ЦЕНТРОБЕЖНЫЙ ВЕНТИЛЯТОР И КОНДИЦИОНЕР С ТАКИМ ВЕНТИЛЯТОРОМ

Настоящее изобретение относится к центробежному вентилятору, а также к содержащему его воздушному кондиционеру. Воздушный кондиционер, включающий в себя корпус и воздуходувный блок, который включает: корпус, чтобы направлять всасывание и испускание воздуха, центробежный вентилятор, расположенный внутри корпуса; электродвигатель и вал электродвигателя, при этом вентилятор включает в себя: основание, соединенное с валом электродвигателя; множество лопаток, отстоящих одна от другой в окружном направлении основания для направления воздуха, введенного в осевом направлении основания, по окружному направлению основания; входную кромку, выполненную на каждой из лопаток и расположенную вблизи вала электродвигателя; выходную кромку, выполненную на каждой из лопаток и обращенную в сторону внешнего окружного направления основания; и, по меньшей мере, одну первую лопатку, включенную в лопатки, причем входная кромка первой лопатки проходит на большем расстоянии от вала электродвигателя, чем входная кромка ...

СТУПЕНЬ ЦЕНТРОБЕЖНОГО КОМПРЕССОРА

Ступень центробежного компрессора содержит вращающееся относительно статора (13) рабочее колесо (10) с несколькими со стороны ротора лопатками (12) рабочего колеса, причем каждая лопатка (12) рабочего колеса имеет входящую кромку (16) потока, выходную кромку (17) потока и продолжающуюся между входящей кромкой (16) потока и выходной кромкой (17) потока всасывающую сторону (19), напорную сторону (18) и обращенную к статору (13) внешнюю поверхность (20). Во внешней поверхности (20) по меньшей мере одной лопатки (12) рабочего колеса выполнен по меньшей мере один паз (22), ограниченный как на всасывающей стороне (19), так и на напорной стороне (18) продольной перемычкой (23, 24), причем каждая из продольных перемычек (23, 24) образует уплотнительный конический конец соответствующей лопатки (12) рабочего колеса относительно статора (13). Изобретение направлено на повышение надежности ступени компрессора. 2 н. и 17 з.п. ф-лы, 10 ил.

ВСАСЫВАЮЩЕЕ УСТРОЙСТВО

Настоящее изобретение относится к всасывающему устройству для вытяжных шкафов, печей и других подобных устройств. Устройство содержит несколько рабочих колес вентиляторов и электромотор. Каждое из колес заключено в спиральный корпус, являющийся составной частью корпуса устройства. Корпус выполнен из двух полуоболочек: верхней и нижней. Каждая полуоболочка состоит из двух или более половин спиральных корпусов и полунаконечников, ограничивающих выпускные отверстия. Электромотор установлен в цилиндрическом кожухе. Кожух снабжен рычагами, расположенными с интервалом в 120o. Рычаги заканчиваются штифтами с вертикальными осями и увеличенными торцевыми основаниями. Половины спиральных корпусов смонтированы параллельно. Между смежными половинами образованы промежутки, в которых расположены соединительные поперечины, имеющие центральные втулки с вертикальными осями. Оси обеспечивают точное соединение штифтами и стягивание полуоболочек между собой сверху и снизу от блока мотор-вентилятор. Использование ...

МАСЛЯНОЕ УПЛОТНЕНИЕ МАСЛООТБОЙНОГО КОЛЬЦА И ТУРБОНАГНЕТАТЕЛЬ, СОДЕРЖАЩИЙ ТАКОЕ МАСЛЯНОЕ УПЛОТНЕНИЕ

... 1. Масляное уплотнение компрессора, содержащее:упорный подшипник (59), предназначенный для размещения в полости (33) корпуса турбонагнетателя концентрично валу (11) компрессорного колеса турбонагнетателя;вставляемую деталь (360), предназначенную для размещения в полости (33), смежной с упорным подшипником (59), при этом упорный подшипник (59) и вставляемая деталь (360) выполнены с возможностью образования между ними полости (35) для слива масла;маслоотбойное кольцо (340), содержащее фланец (382) маслоотбойного кольца и часть (383) втулки, выходящую из него, при этом фланец (382) маслоотбойного кольца выходит между упорным подшипником (59) и вставляемой деталью (360) и при этом часть (383) втулки проходит в осевом направлении в отверстие (385) вставляемой детали, выполненное в центральной части вставляемой детали (360); инесколько сегментов (74) спиральной лопатки, расположенных по окружности с шагом вокруг фланца (382) маслоотбойного кольца.2. Масляное уплотнение компрессора по п. 1, отличающееся ...

УСТРОЙСТВО РЕГУЛИРОВАНИЯ ГАЗОВОГО ПОТОКА, СИСТЕМА ПОСЛЕДУЮЩЕЙ ОБРАБОТКИ ОТРАБОТАВШИХ ГАЗОВ И ДВИЖИТЕЛЬНАЯ УСТАНОВКА ТРАНПОРТНОГО СРЕДСТВА

... 1. Устройство (26) регулирования газового потока в канале (24), содержащее множество поворотных лопаток (27, 28) регулирования газового потока, причем оси поворота первой и второй соседних лопаток (27, 28) разнесены так, что задняя кромка (47) первой лопатки (27) перекрывается с передней кромкой (48) второй лопатки (28), когда первая и вторая соседние лопатки (27, 28) находятся в первом взаимном крайнем положении для существенного ограничения газового потока в канале (24), отличающееся тем, что вторая лопатка (28) имеет выемку (49) такой формы, что задняя кромка (47) первой лопатки (27) по меньшей мере частично входит в выемку, когда первая и вторая соседние лопатки (27, 28) находятся в первом взаимном крайнем положении.2. Устройство по п. 1, отличающееся тем, что первая и вторая лопатки (27, 28) имеют такую конфигурацию, что поверхность (50) задней кромки (47) первой лопатки (27), обращенная к выемке (49), расположена на некотором расстоянии от противолежащей поверхности (51) выемки (49 ...

АНТИПОМПАЖНОЕ РЕГУЛИРОВАНИЕ ЧАСТОТЫ ВРАЩЕНИЯ РОТОРОВ ДЛЯ ДВУХ ИЛИ БОЛЕЕ КОМПРЕССОРОВ

Способ и система управления для регулирования частоты вращения роторов центробежных компрессоров (4, 5), работающих в процессе адсорбции при переменном вакуумметрическом давлении так, чтобы предотвратить их переход в режим работы, в котором может возникнуть состояние помпажа, и непосредственно приводимых в действие электрическими двигателями (4, 5), которые, в свою очередь, управляются приводами (12, 13) с регулируемой частотой вращения, при этом с последовательным управлением процессом, осуществляемым при переменном вакуумметрическом давлении между заданными предельными значениями наибольшего давления адсорбции и наименьшего давления десорбции. Определена оптимальная частота вращения роторов при работе компрессоров, при которой компрессоры будут работать в соответствии с рабочей кривой пикового КПД их характеристики компрессора. Эта частота вращения изменяется с помощью коэффициента обратной связи по частоте вращения, когда расход или другой параметр, соответствующий расходу через компрессоры ...

Композиционный бандаж и способ присоединения бандажа к лопаткам

СНИЖЕНИЕ НАГРУЗКИ ОТ ОСЕВОГО УСИЛИЯ В ТУРБОКОМПРЕССОРЕ

УЗЕЛ ТУРБОМАШИНЫ

ХОЛОДИЛЬНАЯ СИСТЕМА С ДИАГОНАЛЬНЫМ КОМПРЕССОРОМ

ЦЕНТРОБЕЖНЫЙ НАСОС И МУФТА ДЛЯ СОЕДИНЕНИЯ ВАЛА ЦЕНТРОБЕЖНОГО НАСОСА С ВАЛОМ ПРИВОДНОГО ДВИГАТЕЛЯ

... 1. Центробежный насос, имеющий вал (18), крыльчатку на валу (18) и спиральный кожух, в котором размещена крыльчатка, при этом спиральный кожух прикреплен крепежным средством (16) к электрическому приводному двигателю (12), имеющему вал (20), при этом вал (18) центробежного насоса соединен с валом (20) электрического приводного двигателя (12) таким образом, что вал (20) приводного двигателя (12) поддерживает вал (18) и крыльчатку центробежного насоса, при этом вал (18) центробежного насоса (10) прикреплен к концу вала (20) электрического приводного двигателя (12) посредством отдельной регулируемой в осевом направлении соединительной муфты (24, 124, 224, 324, 424, 524), расположенной на валу (20) приводного двигателя (12), отличающийся тем, что вал (20) приводного двигателя (12) и отдельная, регулируемая в осевом направлении, соединительная муфта (24, 124, 224, 324, 424, 524) снабжены средством (26, 28, 36, 38, S, 568) для регулировки осевого положения регулируемой в осевом направлении соединительной ...

ЦЕНТРОБЕЖНЫЙ ВЕНТИЛЯТОР И КОНДИЦИОНЕР С ТАКИМ ВЕНТИЛЯТОРОМ

ТУРБОМАШИНА

ЛИНИЯ ПО ПРОИЗВОДСТВУ АЗОТНОЙ КИСЛОТЫ

СПОСОБ (ВАРИАНТЫ) И СИСТЕМА (ВАРИАНТЫ) ОБНАРУЖЕНИЯ ДЕФЕКТОВ РЕЦИРКУЛЯЦИОННОГО КЛАПАНА КОМПРЕССОРА

СТУПЕНЬ ЦЕНТРОБЕЖНОГО КОМПРЕССОРА

... 1. Ступень центробежного компрессора, содержащая вращающееся относительно статора (13) рабочее колесо (10) с множеством со стороны ротора лопаток (12) рабочего колеса, причем каждая лопатка (12) рабочего колеса имеет входящую кромку (16) потока, выходную кромку (17) потока и продолжающуюся между входящей кромкой (16) потока и выходной кромкой (17) потока всасывающую сторону (19), напорную сторону (18) и обращенную к статору (13) внешнюю поверхность (20), отличающаяся тем, что во внешней поверхности (20), по меньшей мере, одной лопатки (12) рабочего колеса выполнен, по меньшей мере, один паз (22), ограниченный как на всасывающей стороне (19), так и на напорной стороне (18) продольной перемычкой (23, 24), причем каждая из продольных перемычек (23, 24) образует уплотнительный конический конец соответствующей лопатки (12) рабочего колеса относительно статора (13).2. Ступень центробежного компрессора по п. 1, отличающаяся тем, что во внешней поверхности (20) соответствующей лопатки (12) рабочего ...

КРЫШКА КОМПРЕССОРА ДЛЯ ТУРБОНАГНЕТАТЕЛЕЙ

... 1. Турбонагнетатель, содержащий крыльчатку (14) компрессора и турбинное колесо, соединенные посредством вращающегося вала (20), при этом улучшение включает корпус (16) компрессора с геометрией рециркуляции, содержащий:часть (40) основания улитки, функционально граничащую с крыльчаткой (14) компрессора;контур (42), который охватывает и комплементарно совпадает с крыльчаткой (14) компрессора;индуктор (44), содержащий кольцо (50) и выступающие элементы (52);входную область (46), проходящую от части (40) основания улитки; иполость (60) рециркуляции, образованную в части (40) основания улитки и входной области (46) с щелью (70) рециркуляции и щелью (72) входа для возвращения потока воздуха во входную область (46);при этом сходящаяся стенка (54) входной области (46) расположена на одном уровне с внутренней поверхностью (56) кольца (50) индуктора (44).2. Турбонагнетатель по п. 1, отличающийся тем, что запас по помпажу улучшен за счет обеспечения возможности отведения потока воздуха с края крыльчатки ...

КОРПУС КОМПРЕССОРА С ПОЛОСТЯМИ, ИМЕЮЩИМИ ОПТИМИЗИРОВАННУЮ ВЫШЕ ПО ПОТОКУ ФОРМУ

... 1. Корпус для компрессора турбомашины, содержащий не сообщающиеся друг с другом полости, вырезанные в толще указанного корпуса на уровне его внутренней поверхности и расположенные параллельно относительно друг друга по окружности указанного корпуса (4), причем указанные полости имеют продолговатую форму, простираются в основном направлении ориентации между двумя боковыми стенками и замыкаются, соответственно выше по потоку и ниже по потоку, передней стороной и задней стороной, пересечения которых с внутренней поверхностью корпуса (4) образуют соответственно входную границу и выходную границу, отличающийся тем, что входная граница этих полостей имеет форму волнистой линии, содержащей, по меньшей мере, два чередования по ее длине, заключенной между указанными боковыми стенками.2. Корпус для компрессора по п. 1, в котором указанные боковые стенки сходятся друг с другом в направлении снизу вверх по потоку.3. Корпус для компрессора по п. 1, в котором волнистая линия представляет собой изломанную ...

Luftzuführvorrichtung

Die Erfindung betrifft eine Luftzuführvorrichtung (1) mit einem elektromotorischen Antrieb (2), der einen Rotor (3) mit mindestens einem Magneten (9) umfasst, und mit einer Kühleinrichtung (13).Um die Luftzuführvorrichtung (1), insbesondere im Hinblick auf ihren Wirkungsgrad und/oder ihre Lebensdauer, zu verbessern, weist die Kühleinrichtung (13) außen an dem Magneten (9) eine von einem Kühlmedium durchströmte Kühlkanalgeometrie auf.

Einrichtung zur Umsetzung von UEberschallgeschwindigkeit in Druck, insbesondere bei Kreiselradverdichtern

Abgasturbolader

Die Erfindung betrifft einen Abgasturbolader (1) umfassend ein Lagergehäuse (2), eine im Lagergehäuse 2 gelagerte Welle (3), ein auf der Welle (3) angeordnetes Verdichterrad (5) und ein auf der Welle (3) angeordnetes Turbinenrad (4), ein das Verdichterrad (5) oder das Turbinenrad (4) umschließendes Gehäusebauteil (7), und einen Dichtring (14) zwischen dem Lagergehäuse (2) und dem Gehäusebauteil (7), dadurch gekennzeichnet, dass der Dichtring (14) zur Entfaltung seiner Dichtwirkung in Richtung senkrecht zur Welle (3) verpresst ist.

Verbessertes Einlasssystem für einen Radialverdichter

Ein Radialverdichter nutzt ein Verdichterrad (102) mit einem Inducer (103). Ein Lufteinlasskanal (108) weist einen ersten Bereich (109) und einen durch eine Abteilwand (111) vom ersten Bereich getrennten zweiten Bereich (110) auf. Die Abteilwand erstreckt sich ausgehend von einer Einlass-Ebene (112) des Inducers und verbindet den ersten Bereich mit einem ersten Luftfilter (115) und den zweiten Bereich mit einem zweiten Luftfilter (118).

Elektrischer Kompressor

Dieser elektrischer Kompressor hat eine Drehwelle mit einem ersten und einem zweiten Ende, ein Kompressorlaufrad, das an dem ersten Ende der Drehwelle montiert ist und eine Rückfläche hat, die dem zweiten Ende zugewandt ist, einen Motor, der zwischen dem ersten Ende und dem zweiten Ende der Drehwelle angeordnet ist, einen Wandabschnitt, der einen Laufradraum und einen Motorraum voneinander trennt und eine Referenzwandfläche mit einer Form entlang der Rückfläche des Kompressorlaufrads hat, und ein Umgehungsloch, das in dem Wandabschnitt ausgebildet ist, um den Laufradraum mit dem Motorraum zu verbinden, und das eine erste Öffnung hat, die zu dem Laufradraum öffnet. In dem Wandabschnitt ist ein ausgesparter Abschnitt ausgebildet, der um die erste Öffnung des Umgehungslochs herum angeordnet und von der Referenzwandfläche ausgespart ist.

DREHZAHLERHÖHER

Ein Drehzahlerhöher bzw. eine Übersetzungsvorrichtung weist eine ringförmige Umfangswand, die mit einer Drehung der niedertourigen Welle drehbar ist, eine hochtourige Welle, die innerhalb der Umfangswand angeordnet ist und eine Drehachse hat, die sich in der gleichen Richtung wie jene der Umfangswand erstreckt, und drei Rollelemente auf, die innerhalb der Umfangswand angeordnet und mit sowohl der Umfangswand als auch der hochtourigen Welle in Kontakt sind. Die drei Rollelemente sind an verschiedenen Positionen entlang der Drehachse der hochtourigen Welle angeordnet, wobei sich Drehachsen der drei Rollelemente in der gleichen Richtung wie die Drehachse der hochtourigen Welle erstrecken und die Drehachsen der drei Rollelemente in einer Umfangsrichtung der hochtourigen Welle beabstandet sind. Die drei Rollelemente sind derart angeordnet, dass zumindest ein Teil von Kontaktbereichen zwischen der hochtourigen Welle und den Rollelementen frei von einem einander Überlappen entlang der Drehachse ...

Lagervorrichtung, Verdichter und Verfahren zur Herstellung solch einer Lagervorrichtung

Die Erfindung betrifft eine Lagervorrichtung, einen Verdichter und ein Verfahren, wobei ein erstes Radiallagerelement in zumindest radialer Richtung vermessen wird, wobei ein axialer Abstand des ersten Axiallagerelements zu dem ersten Radiallagerelement gemessen wird, wobei das zweite Radiallagerelement in zumindest radialer Richtung vermessen wird, wobei in Abhängigkeit der vordefinierten ersten Breite des Radialspalts das erste Radiallagerelement zu dem zweiten Radiallagerelement positioniert wird, wobei das Justiermittel derart angeordnet wird, dass der Axialspalt die vordefinierte zweite Breite aufweist.

TURBOGEBLÄSE MIT LAUFRADEINHEIT - KÜHLERLÜFTER FÜR EINE BRENNSTOFFZELLE

Die vorliegende Erfindung betrifft ein Turbogebläse mit einem Laufradeinheit - Kühlerlüfter für eine Brennstoffzelle und insbesondere ein Turbogebläse mit einem Laufradeinheit - Kühlerlüfter für eine Brennstoffzelle, wobei das Turbogebläse den Wirkungsgrad und die Haltbarkeit einer Laufradeinheit verbessert, indem ein Temperaturanstieg durch Kühlung der Laufradeinheit, die Hochdruckluft erzeugt, unter Verwendung einer Kühlstruktur verhindert wird, die sowohl eine Luftkühlung als auch eine Wasserkühlung verwendet.

Rolling element bearings for an oil-free liquid chiller

Compressor and turbocharger

Rolling element bearings for an oil-free liquid chiller

A refrigeration chiller employs a centrifugal compressor the impellers of which are mounted on a shaft which is itself mounted for rotation using rolling element bearings lubricated only by the refrigerant which constitutes the working fluid of the chiller system. Apparatus is taught for providing liquid refrigerant to (1.) the bearings immediately upon chiller start-up, during chiller operation and during a coastdown period subsequent to shutdown of the chiller and (2.) the drive motor of the chiller's compressor for motor cooling purposes. By use of a variable speed-driven motor to drive the compressor, optimized part load chiller performance is achieved in a chiller which does not require or employ an oil-based lubrication system.

Turbocharger compressor active diffuser

Compressor Module

Turbomachinery

TURBOCHARGER WITH A COMPRESSOR WITH TWO BACK MOVING FORWARD IMPELLERS

Two-piece labyrinth seal for a centrifugal compressor balance piston

Large compressor bundle assembly

The present invention, mainly applicable to large / very heavy centrifugal compressors equipped with barrel casing, provides the installation of sliding pads at several convenient locations, typically in the areas adjacent the external gasket on the outer diaphragm bundle periphery. The sliding pads, made of self-lubricating material, cast iron or others graphite filled materials, will be bearing the whole diaphragm bundle weight preventing any direct contact between barrel casing internal surface (6) and diaphragm bundle external surface (7), both during assembly operations and also after the diaphragm bundle has reached its final location inside the barrel casing. In this way, it is possible to prevent possible damages to both diaphragm bundle (2) and casing housing surfaces during diaphragm bundle insertion/extraction phase into/from the barrel casing.

Centrifugal fan and air conditioner having the same

An air blowing unit of an air conditioner includes a housing to guide suction and discharge of air, a centrifugal fan positioned inside the housing, and a motor to drive the centrifugal fan. The centrifugal fan includes a base coupled to a motor shaft coupled to the motor, a plurality of blades disposed spaced apart from each other in a circumferential direction of the base to guide air introduced in an axial direction of the base to the circumferential direction, a leading edge provided to the blades and arranged close to the motor shaft, a trailing edge provided to the blades and facing in an outer circumferential direction of the base, and at least one first blade of the blades, the leading edge of the first blade being shorter than the leading edge of the other blades.

INTER-COMPRESSOR CROSS-OVER PIPE HEAT EXCHANGER

The gas turbine engine described includes a first centrifugal compressor, a second centrifugal compressor, and intercompressor pipes extending therebetween. The intercompressor pipes fluidly interconnect an exit of a first impeller of the first centrifugal compressor and an inlet of a second impeller of the second centrifugal compressor. The intercompressor pipes have heat transfer structures on outer surfaces thereof to increase convective heat transfer.

CENTRIFUGAL COMPRESSOR WITH LEAKAGE-FREE DIFFUSER BLADES AND METHOD OF ASSEMBLING A CENTRIFUGAL COMPRESSOR

A centrifugal compressor (100) comprises a rotor (103, 104, 105) with a plurality of impellers (104, 105) and a stator (101, 102, 106, 107, 108, 109, 110) with at least a first diaphragm (106), a second diaphragm (107, 108), a diffuser defined between a shroud side of a downstream portion (106) of the first diaphragm and a hub side of a upstream portion (107) of the second diaphragm, and a plurality of diffuser blades (110) inside the diffuser; each diffuser blade (110) has a tip portion, a base portion and an airfoil portion; the diffuser blades (110) are located between the downstream portion (106) of the first diaphragm and the upstream portion (107) of the second diaphragm; the base portion (HOB) of the diffuser blades (110) is integrated in or mounted directly or indirectly to the upstream portion (107) of the second diaphragm, and the tip portion (HOT) of the diffuser blades (110) abuts against the downstream portion (106) of the first diaphragm; alternatively, the base portion (130B ...

COMPRESSOR DIFFUSER WITH DIFFUSER PIPES VARYING IN NATURAL VIBRATION FREQUENCIES

The diffuser pipe assembly for a compressor of a gas turbine engine includes diffuser pipes circumferentially distributed around a central axis and configured for distributing a flow of compressed air from the compressor to the combustor. Each of the diffuser pipes curving between an inlet end and an outlet end. A first subset of the diffuser pipes has a natural vibration frequency different than a natural vibration frequency of at least a second subset of the diffuser pipes. A method of operating a compressor including the diffuser pipe assembly is also disclosed.

AN APPARATUS FOR POWER GENERATION FROM THE SURFACE OCEAN WAVES IN DEEP SEAS

Exemplary embodiments of the present disclosure are directed towards an apparatus for power generation from the surface ocean waves in deep seas and methods thereof. Wave energy moves a float, vertically up and down, within the confines of four vertical pillars that are fixed to a buoyant tank. This buoyant tank is placed deep below the ocean surface and the upper surface of the float connects to a rack and pinion system which is coupled to a gearbox. Within the gearbox are freewheels and gears, that drive a generator shaft, in one direction only, as the float oscillates up and down on the ocean waves. For generating large amounts of power, a number of units are placed in a row. Many rows are placed side by side and the mechanical energy of all the rows is transferred to a long horizontal shaft which drives a generator through a gear box.

BARRIER SEALING SYSTEM FOR CENTRIFUGAL COMPRESSORS

A rotary machine (10) includes a machine rotor (12), a bearing (15) coupled to the machine rotor (12), a machine stator (14), and a sealing device (16) dispose d between the machine rotor (12) and the machine stator (14). The sealing device (16) includes a dry gas seal (18, 20) and first and second seals (26, 42) disposed between t he dry gas seal (18, 20) and the bearing (15). One or both of the first and second seal s (26, 42) includes a brush seal or more specifically a brush seal including a pluralit y of non--metallic fibers (28).

DIFFUSER, CENTRIFUGAL COMPRESSION POWER SYSTEM AND BLADELESS FAN

A diffuser (10) includes a lower element (12) and an upper element (14). The upper element (14) is fixed on the lower element (12), and the upper element (14) and the lower element (12) are formed separately. The lower element (12) includes a lower inner wall (120) and a lower outer wall (122), and the upper element (14) includes an upper inner wall (140) and an upper outer wall (144). The upper inner wall (140) is connected to the lower inner wall (120) to form an internal air-guiding surface (16), the upper outer wall (142) is connected to the lower outer wall (122) to form an external air-guiding surface (18), and the internal air-guiding surface (16) is disposed opposite to the external air-guiding surface (18) to define an air-guiding channel (20) for air flow diffusion. The upper element (14) further includes an upper air-guiding wing (144) for connecting the upper inner wall (140) and the upper outer wall (142), and the lower element (12) further includes a lower air-guiding wing ...

TURBOCHARGER WITH DUAL-BLADE NOZZLE SYSTEM

A turbo with double-vane nozzle ring including three housings, two wheels, fixed and straight-moving nozzle rings The fixed nozzle ring with a set of fixed vanes which is driven by gears and goes straightly through the vane-shaped holes The fixed and straightly moving adjustable nozzle rings are set in the turbine housing passageway in order to change the passage sectional areas The inlet air flow is aired after designs which will broaden the turbocharger high-efficiency zone ...

TURBOCHARGER WITH DUAL-BLADE NOZZLE SYSTEM

Disclosed is a turbocharger with a dual-blade nozzle system, comprising a turbine housing, a fixed nozzle ring (1), a linearly moving nozzle disk (2), a mid-housing (5), a rack (4), rocker arm rods (3), and a gear (6), wherein airfoil-shaped fixed blades (8) are provided on the front end face of the fixed nozzle ring (1), with blade-type holes (9) provided between the fixed blades (8), and the fixed nozzle ring (1) is sheathed around the outside of the mid-housing (5) and fixed to the mid-housing (5) via screws; the linearly moving nozzle disk (2) is provided on the rear end of the fixed nozzle ring (1), a group of moving blades (7) is provided on the front end face of the linearly moving nozzle disk (2), the moving blades (7) are movably inserted into the blade-type holes (9), the rear end face of the linearly moving nozzle disk (2) is fixedly connected to two rocker arm rods (3), with the rocker arm rods (3) inserted into the mid-housing (5) and engaged with the rack (4) via the gear ...

COMPRESSOR CASING COMPRISING CAVITIES HAVING AN OPTIMISED UPSTREAM SHAPE

Carter pour compresseur de turbomachine comportant des cavités (5) creusées, de façon non communicantes entre elles, dans l'épaisseur dudit carter à partir de sa face interne et disposées parallèlement les unes aux autres sur une circonférence dudit carter, lesdites cavités ayant une forme allongée selon une direction principale d'orientation entre deux parois latérales et se refermant respectivement vers l'amont et vers l'aval par une face amont et par une face aval dont les intersections avec la face interne du carter (4) forment respectivement une frontière amont (7) et une frontière aval (6), caractérisé en ce que la frontière amont (7) de ces cavités (5) a la forme d'une ligne ondulée comportant au moins deux alternances sur sa longueur comprise entre lesdites parois latérales. Figure pour l'abrégé : figure ...

FAN, MOLDING DIE, AND FLUID FEEDER

Provided is a centrifugal fan equipped with fan blades (21) arranged in the circumferential direction at intervals therebetween. Each of the fan blades (21) has an inner edge section (26) which is disposed on the inner peripheral side of the fan blade, and also has an outer edge section (27) which is disposed on the outer peripheral side of the fan blade. The fan blade (21) has formed thereon a blade surface comprising a positive pressure surface and a negative pressure surface. When cut by a plane perpendicular to the rotation axis of the fan, the fan blade (21) has a cross-sectional shape having recesses formed in the positive pressure surface and the negative pressure surface. The fan blades (21) include fan blades (21A-21E) having different cross-sectional shapes. As a result of the configuration, the fan has excellent air blowing ability and generates less noise. Also provided are a metallic mold which is used to manufacture the fan and a fluid delivery device which is provided with ...

LARGE COMPRESSOR BUNDLE ASSEMBLY

The present invention, mainly applicable to large / very heavy centrifugal compressors equipped with barrel casing, provides the installation of sliding pads at several convenient locations, typically in the areas adjacent the external gasket on the outer diaphragm bundle periphery. The sliding pads, made of self-lubricating material, cast iron or others graphite filled materials, will be bearing the whole diaphragm bundle weight preventing any direct contact between barrel casing internal surface (6) and diaphragm bundle external surface (7), both during assembly operations and also after the diaphragm bundle has reached its final location inside the barrel casing. In this way, it is possible to prevent possible damages to both diaphragm bundle (2) and casing housing surfaces during diaphragm bundle insertion/extraction phase into/from the barrel casing.

Verfahren zur Reihenherstellung von Kreiselgebläsen für die Aufladung von Verbrennungsmotoren.

Einstufiger Radialverdichter

Kompressor für eine Gasturbinenanlage

Turbocharger.

Turbolader, mit einer Turbine zur Entspannung eines ersten Mediums, mit einem Verdichter zur Verdichtung eines zweiten Mediums unter Nutzung von in der Turbine bei der Entspannung des ersten Mediums gewonnener Energie, wobei die Turbine ein Turbinengehäuse (2) und einen Turbinenrotor (3) aufweist, wobei der Verdichter ein Verdichtergehäuse und einen mit dem Turbinenrotor über eine Welle (4) gekoppelten Verdichterrotor aufweist, wobei das Turbinengehäuse und das Verdichtergehäuse jeweils mit einem zwischen denselben angeordneten Lagergehäuse (1), in welchem die Welle (4) gelagert ist, verbunden sind, und wobei das Lagergehäuse (1) mit einem Turbinenzuströmgehäuse (2) des Turbinengehäuses über ein Kompensationselement (7) verbunden ist.

Centrifugal compressor.

Radialverdichter (10), insbesondere Radialverdichter eines Abgasturboladers, mit einem Laufrad (11); mit einem feststehenden Gehäuse (13); mit einem vom Gehäuse (13) definierten Hauptströmungskanal (14) zum Zuführen eines zu verdichtenden Mediums in Richtung auf das Laufrad (11); und mit einer radial ausserhalb des Hauptströmungskanals (14) angeordneten Sekundärströmungskammer (15), welche durch eine Konturwand (16) vom Hauptströmungskanal (14) abgegrenzt ist und welche mit dem Hauptströmungskanal über eine Sekundärströmungsöffnung (18) im Bereich des Laufrads (11) mit dem Hauptströmungskanal (14) verbunden ist. Im Meridianschnitt gesehen ist die Sekundärströmungsöffnung (18), über welche die Sekundärströmungskammer (15) im Bereich des Laufrads (11) mit dem Hauptströmungskanal (14) verbunden ist, gegenüber einer Radialrichtung schräggestellt oder geneigt.

Centrifugal compressor.

Radialverdichter (10), mit einem Laufrad (11); mit einem Gehäuse (13), welches einen radial äusseren Spiralgehäuseabschnitt (16) und einen radial inneren Einsatzstückabschnitt (15) aufweist; mit einem Hauptströmungskanal (17) zum Zuführen eines zu verdichtenden Mediums in Richtung auf das Laufrad (11); mit einer radial ausserhalb des Hauptströmungskanals (17) angeordneten Zirkulationskammer (18), welche durch eine Konturwand (19) vom Hauptströmungskanal (17) abgegrenzt ist, welche im Bereich des Laufrads (11) mit dem Hauptströmungskanal (17) über eine Zirkulationsöffnung (20) verbunden ist, und welche über sich in der Zirkulationskammer (18) erstreckenden Streben (14) mit dem Einsatzstückabschnitt (15) verbunden ist. Der Hauptströmungskanal (17) ist von der Konturwand (19) und stromabwärts der Konturwand (19) von einem ersten Segment (21) des Einsatzstückabschnitts (15) begrenzt. Die Streben (14) greifen an einem zweiten Segment (22) des Einsatzstückabschnitts (15) an. Das zweite Segment ...

Turbomachine.

Strömungsmaschine, mit einem Gehäuse (30), mit einem in dem Gehäuse (30) aufgenommen Laufrad, wobei das Gehäuse (30) mindestens zwei über eine Flanschverbindung (33) miteinander verbundene Gehäuseteile (31, 32) aufweist, wobei ein erstes Gehäuseteil (31) der über die Flanschverbindung (33) miteinander verbundenen Gehäuseteile Gewindebohrungen (35) für Verbindungsschrauben (34) aufweist, wobei ein zweites Gehäuseteil (32) der über die Flanschverbindung (33) miteinander verbundenen Gehäuseteile Durchgangsbohrungen (37) für die Verbindungsschrauben (34) aufweist, wobei das zweite Gehäuseteil (32) an dem ersten Gehäuseteil (31) mit einer ersten Fläche (39) anliegt und wobei an einer gegenüberliegenden zweiten Fläche (40) des zweiten Gehäuseteils (32) Schraubenköpfe (41) der Verbindungsschrauben (34) anliegen, und wobei die Durchgangsbohrungen (37) des zweiten Gehäuseteils (32) an und benachbart zu der zweiten Fläche (40) eine kleiner Querschnittsfläche aufweisen als an und benachbart zu der ...

Centrifugal compressor and turbocharger.

Radialverdichter (10), mit einem rotorseitigen Laufrad (11); mit einem statorseitigen Gehäuse (13); mit einem Zuführströmungskanal (16), über den zu verdichtendes Medium in axialer Richtung dem Laufrad (11) zuführbar ist; mit einem Diffusor (17), über den verdichtetes Medium in radialer Richtung vom Laufrad (11) weg und in Richtung auf einen Spiralgehäuseabschnitt (15) des Gehäuses (13) führbar ist; wobei der Diffusor (17) radial aussen in einem Übergangsbereich zum Spiralgehäuseabschnitt (15) einen sich vergrössernden Strömungsquerschnitt aufweist.

Centrifugal compressor.

Radialverdichter (10), insbesondere Radialverdichter eines Abgasturboladers, mit einem rotierenden Laufrad (11); mit einem feststehenden Gehäuse (13); mit einem vom Gehäuse (13) definierten Hauptströmungskanal (17) zum Zuführen eines zu verdichtenden Mediums in Richtung auf das Laufrad (11); mit einer radial ausserhalb des Hauptströmungskanals (17) angeordneten Sekundärströmungskammer (18), welche durch eine Konturwand (19) vom Hauptströmungskanal (17) abgegrenzt ist und welche im Bereich des Laufrads (11) mit dem Hauptströmungskanal über einer Sekundärströmungsöffnung (21) verbunden ist; mit sich in der Sekundärströmungskammer (18) erstreckenden Streben (22), über welche die Konturwand (19) mit dem Gehäuse (13) verbunden ist. Die Streben (22) sind derart gekrümmt, dass sich im Meridianschnitt gesehen ein erster Anbindungsabschnitt (23) der jeweiligen Strebe (22) an der Konturwand (19) in Radialrichtung oder überwiegend in Radialrichtung und ein zweiter Anbindungsabschnitt (24) der jeweiligen ...

Cooler of a compressor.

Kühler (10) eines Verdichters, mit einem Kühlergehäuse (11), mit im Kühlergehäuse (11) aufgenommenen Rohren (12), die von einem in dem Verdichter verdichteten Prozessgas (13) umströmt und zur Kühlung des Prozessgases von Kühlwasser (14) durchströmt sind, wobei auf Innenflächen (15) der Rohre (12), die der Führung des Kühlwassers dienen, eine Anti-Fouling-Beschichtung zum Schutz der Innenflächen (15) der Rohre (12) gegen organisches Fouling und anorganisches Fouling aufgebracht ist.

Centrifugal compressor.

Radialverdichter (21), mit einem Verdichterrotor (22), mit einem Verdichtergehäuse (23), welches einen radial äusseren Spiralgehäuseabschnitt (24) und einen radial inneren Einsatzstückabschnitt (25) aufweist, mit einem Hauptströmungskanal (26) zum Zuführen eines zu verdichtenden Mediums in Richtung auf den Verdichterrotor, mit einer radial ausserhalb des Hauptströmungskanals (26) angeordneten Zirkulationskammer (27), welche durch eine Konturwand (28) vom Hauptströmungskanal (26) abgegrenzt ist, welche mit dem Hauptströmungskanal (26) über Zirkulationsöffnungen (29, 30) verbunden ist, und welche über sich in der Zirkulationskammer (37) erstreckenden Streben (31) mit dem Einsatzstückabschnitt (25) verbunden ist, wobei der Hauptströmungskanal (26) von der Konturwand (28) und stromaufwärts der Konturwand (28) von einem stromaufwärtigen Abschnitt (32) des Einsatzstückabschnitts (25) begrenzt ist, und mit einem stromaufwärts des Verdichtergehäuses (23) angeordneten Ansaugelement (34), welches ...

Turbo compressor.

Turboverdichter, mit einer in einem Gehäuse (11) gelagerten Welle (10), um einen Verdichterrotor anzutreiben; mit einem Elektromotor, der die Welle (10) antreibt. Lager (12), über welche die Welle (10) in dem Gehäuse (11) gelagert ist, sind als Gleitlager ausgebildet.

Centrifugal compressor and turbocharger.

Radialverdichter (10) mit einem Laufschaufeln aufweisenden Verdichterrotor (14), und mit einem einen Diffusor (13) aufnehmenden Verdichtergehäuse (11), wobei der Diffusor (13) einen von den Laufschaufeln des Verdichterrotors (14) wegführenden Strömungskanal zumindest abschnittsweise begrenzt, und wobei der Diffusor (13) ausschliesslich Stützschaufeln (16) aufweist.

Turbo-machinery the surge system

Compressor recirculation system having compressor inlet recirculation duct configured to reduce noise

DISCHARGE SECTION STRUCTURE FOR CENTRIFUGAL COMPRESSOR

A high speed switch reluctance motor on a turbocharger

Supercharging device

Air compressor for box-type integrated oxygen-making machine

Centrifugal Fan And Air Conditioner Having Same

An air blowing unit of an air conditioner includes a housing to guide suction and discharge of air, a centrifugal fan positioned inside the housing, and a motor to drive the centrifugal fan. The centrifugal fan includes a base coupled to a motor shaft coupled to the motor, a plurality of blades disposed spaced apart from each other in a circumferential direction of the base to guide air introduced in an axial direction of the base to the circumferential direction, a leading edge provided to the blades and arranged close to the motor shaft, a trailing edge provided to the blades and facing in an outer circumferential direction of the base, and at least one first blade of the blades, the leading edge of the first blade being shorter than the leading edge of the other blades.

Centrifugal compressor

Connecting rod mechanism for actuating inlet guide vane

Compression device and supercharger

The refrigerant cooling and lubricating system

ELECTRIC COMPRESSOR WITH COOLING CIRCUIT

ELECTRIC COMPRESSOR WITH BEARING PROTECTION SYSTEM

ELECTRONIC POWER MODULE, ELECTRICAL ASSEMBLY AND ELECTRIC SUPERCHARGER COMPRISING SUCH AN ELECTRONIC POWER MODULE

Rotary compressor

ELECTRIC COMPRESSOR

ELECTRIC COMPRESSOR WITH BEARING PROTECTION SYSTEM

FEEDER OUT OF GAS FOR Combustible battery, IN PARTICULAR FOR MOTOR VEHICLE

Cet appareil (1) comprend un ensemble (2) de compression de gaz, comprenant une roue à ailettes, un moteur électrique d'entraînement de cette roue à ailettes, contenu dans un carter (4), et des organes électroniques logés dans un boîtier (8), la roue à ailettes (11) étant guidée ou supportée par un ensemble de paliers (22) à air radiaux et de butées à air (23) axiales. Selon l'invention, ledit boîtier (8) est placé à proximité immédiate du moteur de l'appareil (1) de telle sorte que des échanges thermiques soient possibles entre ce boîtier (8) et le carter (4) du moteur.

A TURBOCHARGER HAVING A FLEXIBLE CONTACT AREA BETWEEN A BEARING SLEEVE AND A FIXED COMPRESSOR PORTION.

원심 압축기

... 입력 드라이브를 갖는 임펠러(impeller)를 포함하는 원심 압축기로서, 상기 임펠러는 그 임펠러에서 배출되는 가스에 의해 구동되는 임펠러의 주변을 둘러싸도록 배치된 충동형(impulse) 터빈을 구비하며, 상기 터빈의 출력은 상기 임펠러의 드라이브에 연결되도록 구성된다.

METHOD FOR REDUCING AERO CLEARANCE WITH BALL BEARING TURBOCHARGER

A product and method for use with a turbocharger system comprises a housing with a shaft rotationally supported by the housing. The shaft extends in an axial direction. A bearing assembly supports the shaft in the housing. A wheel is connected to the shaft and rotates with respect to the housing. A clearance opening is defined in the axial direction between the wheel and the housing. A thrust washer is engaged with the bearing assembly. The thrust washer has an outer circumference and is moved with respect to the housing. An efficiency washer is disposed around the outer circumference of the thrust washer and determines the clearance opening by defining a space within which the thrust washer moves with respect to the housing in the axial direction. COPYRIGHT KIPO 2016 ...

방폭 기능을 구비하는 터보 압축기

... 본 발명은 터보 압축기에 관한 것으로서, 기체를 압축하여 외부로 공급할 수 있는 터보 압축기로서, 압축 기체 흡입구를 통하여 유입된 기체를 압축하는 임펠러를 구비하는 압축 유닛; 상기 임펠러를 회전시키기 위하여, 일단부가 상기 임펠러와 결합되어 있는 회전축을 구비하는 모터; 상기 모터를 수용하는 모터 수용 공간을 구비한 하우징; 상기 모터 수용 공간을 지나가도록 마련되며, 내부에 수용된 냉각용 기체가 계속적 순환이 가능하도록 형성되어 있는 냉각 기로; 상기 회전축의 반경 방향 하중 또는 축 방향 하중을 지지하는 베어링으로서, 적어도 한 개 이상이 마련되어 공기 베어링; 상기 하우징의 내부 공간에서 발생한 화염이 통과하면서 냉각된 후 외부로 배출될 수 있도록 마련된 통로로서, 미리 정한 값 이하의 폭과 미리 정한 값 이상의 길이를 가지는 비접촉식 방폭 유닛;을 포함하며, 상기 압축 기체 유로는 상기 냉각 기로와 공간적으로 분리됨으로써, 상기 압축 기체 유로의 내부에 있는 기체가 상기 냉각 기로로 침투할 수 없는 것을 특징으로 한다. 본 발명에 따르면, 공기 베어링에 의하여 사용 수명이 증가하고 진동 소음이 감소하는 동시에, 내부 폭발이 발생하더라도 그로 인한 화염이 신속히 냉각된 후 외부로 배출될 수 있도록 구조가 개선된 방폭형 터보 압축기를 제공할 수 있는 효과가 있다.

TURBOCHARGER COMPRISING A COMPRESSER HAVING TWO BACK-TO-BACK IMPELLERS

Turbochargers of this invention comprise a turbine housing and a turbine wheel rotatably disposed therein. A center housing is connected to the turbine housing, and a compressor housing is attached to the center housing. A compressor is rotatably disposed within the compressor housing, and comprises two impellers placed in back-to-back orientation. A movable member is disposed within the compressor housing to downstream of the compressor to control the flow of air within the compressor housing. The position of the movable member can be operated to control the amount of pressurized air that is produced by one of the compressor impellers to provide enhanced compressor operating efficiency throughout the operating range and mass flow requirements of the engine.

CENTRIFUGAL COMPRESSOR WITH INLET DUCT HAVING SWIRL GENERATORS

A centrifugal compressor is disclosed. The centrifugal compressor comprises an inlet and an impeller comprising a hub and blades. The inlet is for conveying flow to the impeller comprising guide means and is arranged to guide the flow through the inlet to induce swirl in the flow adjacent tips of the blades, the direction of swirl being the direction of rotation of the blades, without substantially disturbing flow adjacent the hub.

Electric motor support mechanism, compressor, and turbocharger

An electric motor support mechanism having a cylindrical member that is attached to the end part of the intake opening side of an air inlet guide, and is formed in a cylindrical shape around an axis line extending along a rotation shaft, a plurality of struts connected to multiple locations on the inner circumferential surface of the cylindrical member, the plurality of struts extending in the radial direction from the inner circumferential surface toward the axis line, and connecting members that connect pairs of struts disposed adjacently in the circumferential direction around the axis line. The end parts of the plurality of struts on the axis-line side in the radial direction are connected in multiple locations on the outer circumferential surface of the electric motor, whereby the electric motor is supported on the axis line.

Fans or the like

In a centrifugal fan or the like including an impeller housed in a casing, recirculation means are provided to recycle a portion of the gas discharge back to the blades of the impeller. Specifically these means comprise a radial passage between an impeller shroud and a wall of the casing, and aperture means in the shroud. 15% to approximately 30% of the gas discharge may be recycled. This arrangement has the advantage of increasing the fan pressure at low discharge rates in comparison with previous fans with no gas recirculation, and this is advantageous in some fan installations where operation is at reduced rates for considerable periods.

Turbo-compressor

A turbo-compressor including a variable vane that adjusts the flow rate of a fluid, a drive shaft that is connected to the variable vane and is rotated to drive the variable vane, a motor that rotationally drives the drive shaft, and a coupling that couples the drive shaft with an output shaft of the motor. Between the drive shaft and output shaft and the coupling, a vibration isolation means is arranged to connect the drive shaft and output shaft to each other so that they rotate together and allow the drive shaft and output shaft to move in a vibration direction.

Air cycle machine fan and compressor housing

A fan and compressor housing for an air cycle machine includes a fan inlet disposed around a center axis of the housing and having a fan inlet mounting flange, a compressor outlet having a compressor outlet mounting flange, and a compressor inlet having a compressor inlet mounting flange. The fan inlet mounting flange has a pinhole disposed thereon configured to receive a pin from a fan inlet diffuser housing and a fan inlet counterbore configured to receive a mating component from the fan inlet diffuser housing. The compressor outlet mounting flange has a compressor outlet counterbore configured to receive a first mating component from a condenser/reheater. The compressor inlet mounting flange has a compressor inlet counterbore configured to receive a second mating component from the condenser/reheater.

ROLLING ELEMENT BEARINGS FOR AN OIL-FREE LIQUID CHILLER

A refrigeration chiller employs a centrifugal compressor the impellers of which are mounted on a shaft which is itself mounted for rotation using rolling element bearings lubricated only by the refrigerant which constitutes the working fluid of the chiller system. Apparatus is taught for providing liquid refrigerant to (1.) the bearings immediately upon chiller start-up, during chiller operation and during a coastdown period subsequent to shutdown of the chiller and (2.) the drive motor of the chiller's compressor for motor cooling purposes. By use of a variable speed-driven motor to drive the compressor, optimized part load chiller performance is achieved in a chiller which does not require or employ an oil-based lubrication system.

CENTRIFUGAL COMPRESSOR WITH SURGE PREDICTION

A centrifugal compressor for a chiller includes a casing, an inlet guide vane, an impeller downstream of the inlet guide vane, a rotational magnetic bearing, a magnetic bearing sensor, a motor, a diffuser and a controller. The casing has inlet and outlet portions with the inlet guide vane disposed in the inlet portion. The impeller is attached to a shaft. The radial magnetic bearing rotatably supports the shaft. The magnetic bearing sensor detects at least one of a position signal indicative of the shaft's position and a current signal indicative of current supplied to the magnetic bearing. The motor rotates the shaft in order to rotate the impeller. The diffuser is disposed in the outlet portion downstream from the impeller. An outlet port of the outlet portion is disposed between the impeller and the diffuser. The controller is programmed to predict surge based on the position signal and/or the current signal.

Centrifugal compressor

A centrifugal compressor includes: an impeller provided in a housing; a throttling portion provided in front of the impeller in the housing; an actuator rod connected to an actuator and including a plate portion including a plane at its end; and a connecting portion connected to the throttling portion and including a pair of projections facing each other across the plate portion in an axial direction of the actuator rod.

Two piece split scroll for centrifugal compressor

A centrifugal compressor assembly is provided. The centrifugal compressor assembly includes a scroll assembly having a suction plate defining an inlet fluid passage, a suction plate housing, a diffuser plate, and a collector. The suction plate is detachably coupled to the suction plate housing, the suction plate housing is detachably coupled to the collector, and the diffuser plate is detachably coupled to the collector. The centrifugal compressor assembly further includes an impeller rotatably mounted in the scroll assembly for compressing fluid introduced through the inlet fluid passage, and a variable geometry diffuser system.

Gas compressor with a plurality of air realease systems each having an air release valve and an air regulating valve

A gas compressor includes a compressor main body, an electric motor that supplies driving force to the compressor main body, a power conversion device, a plurality of air release valves disposed in a plurality of air release systems communicating with a discharge piping system to discharge the compressed gas to an atmospheric pressure environment, and a controller. The gas compressor performing an unload operation of reducing, when a discharge pressure reaches a predetermined pressure, a load on the compressor main body by opening one of the air release valves. The gas compressor including the plurality air release systems for each of which the air release value is disposed, and a plurality of pressure regulating valves provided on a downstream side of each air release valve, respectively, wherein the controller selects one of the air release valves and performs the unload operation.

Supersonic centrifugal compressor

A supersonic centrifugal compressor comprising an impeller (2), a plurality of vanes (13) radially extending in the impeller to form a plurality of radially extending flow channels therebetween, and a diffuser (3) circumferentially surrounding the impeller and having a circumferential flow channel communicating with the flow channels of the impeller. In the impeller (2), at least one nozzle (18) is provided at the outlet of the flow channel and a contraction (20) is provided at the inlet of the flow channel, so that the flow channel is a low speed flow channel (21). Thus the speed of the fluid is low in the low speed flow channel (21) and high at the outlet of the nozzle (18). Also, in the diffuser (3), backflow preventing and friction reducing projections (33) are provided concentrically in the inner surface of the casing (11). Also, leakage preventing and pressure reducing vanes (37) are provided between the side disc (14,15) of the impeller (2) and the casing (11), rotatably with the ...

IMPELLER SHROUD FREQUENCY TUNING RIB

A frequency tuning rib (26g, 26h) is provided on an impeller shroud (26) to alter a natural frequency of the shroud (26) so as to avoid coincidence with the aerodynamic excitation frequencies to which the shroud (26) is exposed during engine operation.

Inflatable and Deflatable Air Pump

An inflatable and deflatable air pump is provided. The inflatable and deflatable air pump includes a panel ( 11 ), a panel cover ( 12 ) matched with the panel ( 11 ), an air chamber ( 13 ) installed inside of the panel cover ( 12 ), a motor ( 14 ) connected with the air chamber ( 13 ), and a hollow cylindrical shifting switch ( 17 ). A plurality of air inlet-outlet holes ( 111 ) are formed on the panel ( 11 ), a vent valve ( 121 ) is disposed on the panel cover ( 12 ), an impeller ( 131 ) is disposed in the air chamber ( 13 ) and is connected thereto with a rotating shaft ( 141 ) of the motor ( 14 ), and two air chamber holes ( 1321, 1322 ) are formed on the air chamber ( 13 ). The shifting switch ( 17 ) is connected with a connecting linkage ( 16 ), and the connecting linkage ( 16 ) is connected with a driving switch ( 15 ), two radial through holes ( 1711, 1712 ) perpendicular to each other and two radial half through holes ( 1731, 1732 ) perpendicular to each other are formed on the shifting switch ( 17 ), and a protruding stopping element ( 172 ) is disposed on the shifting switch ( 17 ).

Centrifugal compressor and washing method

The centrifugal compressor is provided with a casing, a rotating shaft which is supported inside the casing, an impeller which is arranged on the rotating shaft and rotates to compress a fluid, and a washing liquid injection device which injects a washing liquid into a flow path formed by the impeller and the casing. The washing liquid injection device is provided with a plurality of nozzles which are arranged along a circumferential direction of the rotating shaft to inject the washing liquid into the flow path and a plurality of chambers which communicate with each corresponding nozzle among the plurality of nozzles and supply the washing liquid to the corresponding nozzle.

Centrifugal compressor having an asymmetric self-recirculating casing treatment

A centrifugal compressor includes an asymmetric self-recirculating casing treatment that includes, on an inner face of a casing 10, a suction ring groove 1, a ring guide channel 2 and a back-flow ring groove 3 to form a self-recirculating channel. An axial-direction position S r from an upstream end face of the suction ring groove to an impeller full blade leading edge 4 or a width b r of the suction ring groove 1 is represented as A(α·D−β·D) 2 +A 0 and is distributed in a parabolic shape in a circumferential direction. An initial phase angle θ 0 is in a range of 0≦θ 0 ≦2π. A circumferential angle α of the casing has a definition range of θ 0 ≦α≦θ 0+ 2λ. In the expression, A denotes a parameter of the parabola in the axial-direction position S r or the width b r , and A 0 denotes an extreme of the axial-direction position S r or the width b r when corresponding circumferential angle β and the α are equal at an extreme point of distribution of the parabola.

CENTRIFUGAL COMPRESSOR DIFFUSER AND CENTRIFUGAL COMPRESSOR PROVIDED WITH THE SAME

A centrifugal compressor diffuser includes a shroud-side wall () provided downstream of a centrifugal impeller; a hub-side wall provided so as to face the shroud-side wall (); a plurality of shroud-side blades () fixed at base ends thereof to the shroud-side wall () and hub-side blades () fixed at base ends thereof to the hub-side wall. The shroud-side blades () and the hub-side blades () are combined in such a state that inlet angles thereof differ from one another and that at least portions of top ends thereof in a blade height direction are abutted onto one another. In gaps where the top ends of the combined shroud-side blades () and hub-side blades () are not abutted onto one another, a connecting member () that connects the top ends is provided so as to fill at least portions of the gaps. 1. A centrifugal compressor diffuser comprising:a shroud-side wall provided downstream of a centrifugal impeller;a hub-side wall provided so as to face the shroud-side wall;a plurality of shroud-side blades fixed at base ends thereof to the shroud-side wall; anda plurality of hub-side blades fixed at base ends thereof to the hub-side wall, whereinthe shroud-side blades and the hub-side blades are combined in such a state that inlet angles thereof differ from one another and that at least portions of top ends thereof in a blade height direction are abutted onto one another,in gaps where the top ends of the combined shroud-side blades and hub-side blades are not abutted onto one another, a connecting member that connects the top ends so as to fill at least portions of the gaps is provided,the connecting member has a ring-like shape that continuously connects the top ends of the plurality of shroud-side blades and hub-side blades in a circumferential direction, andthe inside diameter of the ring-like connecting member is smaller than a radius defined by leading edges of the shroud-side blades and hub-side blades.23-. (canceled)4. The centrifugal compressor diffuser according to ...

DYNAMIC THRUST BALANCING FOR CENTRIFUGAL COMPRESSORS

Systems and methods for dynamically balancing axial loads in centrifugal compressors to reduce residual axial loads on the bearings used therein are described. A sensor or probe detects a parameter associated with the axial load acting on the bearing. Based on the detected parameter, the pressure in a balance chamber is controlled to adjust the compensating axial force generated by a balance drum. 1. A centrifugal compressor comprising:a rotor assembly including at least one impeller;a bearing connected to, and for rotatably supporting, the rotor assembly;a stator;a balance drum disposed between said at least one impeller and said bearing;a balance chamber, defined at least in part by an outboard side of said balance drum, and having a balance line connected thereto;a sensor for sensing a parameter which is associated with an axial load on said bearing; anda control valve for varying a pressure within said balance chamber based on said sensed parameter.2. The centrifugal compressor of claim 1 , further comprising:control logic configured to receive an output of said sensor and to control said control valve according to a predetermined function.3. The centrifugal compressor of claim 2 , wherein said predetermined function operates to increase pressure in said balance chamber when said axial load on said bearing exceeds a predetermined value.4. The centrifugal compressor of claim 1 , wherein said bearing is an active magnetic bearing.5. The centrifugal compressor of claim 1 , wherein said bearing is an oil-lubricated bearing.6. The centrifugal compressor of claim 1 , wherein said sensed parameter is displacement of said bearing.7. The centrifugal compressor of claim 1 , wherein said sensed parameter is axial load on said bearing.8. The centrifugal compressor of claim 1 , wherein said sensor is an induction sensor.9. The centrifugal compressor of claim 1 , wherein said sensor is a piezoelectric sensor.10. The centrifugal compressor of claim 1 , wherein said sensor is ...

CENTRIFUGAL COMPRESSOR

A centrifugal compressor, including: a housing, the housing including: an inlet, a flow channel, an impeller outlet, and an air diffusing channel; a centrifugal impeller disposed inside the housing; a rotating wall, the rotating wall including a front cascade; and a rotating disc, the rotating disc including a rear cascade. The impeller outlet is disposed adjacent to a rear part of the centrifugal impeller and is connected to the flow channel via the air diffusing channel. The rotating wall is disposed between the centrifugal impeller and the housing. The front cascade is disposed inside the front part of the rotating wall and is connected to a dynamic driving device. The rotating disc is disposed inside the housing adjacent to the air diffusing channel and is in a rigid connection with the rotating wall. 228. The centrifugal compressor of claim 1 , wherein an axial section of the rotating wall () is in a shape of a dumbbell.3. The centrifugal compressor of claim 1 , wherein{'b': 28', '7, 'the rotating wall () comprises a rear wall () in a rear part;'}{'b': 9', '8, 'the air diffusing channel () comprises a diffusing wall (); and'}{'b': 7', '28', '9', '7', '8, 'the rear wall () of the rotating wall () is disposed in the air diffusing channel (), and a shape of the rear wall () is the same as a shape of the diffusing wall ().'}4. The centrifugal compressor of claim 2 , wherein{'b': 28', '7, 'the rotating wall () comprises a rear wall () in a rear part;'}{'b': 9', '8, 'the air diffusing channel () comprises a diffusing wall (); and'}{'b': 7', '28', '9', '7', '8, 'the rear wall () of the rotating wall () is disposed in the air diffusing channel (), and a shape of the rear wall () is the same as a shape of the diffusing wall ().'}5272717232341720. Then centrifugal compressor of claim 3 , wherein the dynamic driving device comprises a motor (); the motor () comprises: a rotor () claim 3 , and a stator (); the stator () is fixed inside the inlet () via a supporting device; ...

TURNING GEAR FOR GAS TURBINE ARRANGEMENTS

An apparatus for driving a load is provided. The apparatus comprises a multiple-shaft gas turbine comprising a high pressure compressor and a high pressure turbine drivingly connected to one another by a first gas turbine shaft and a low pressure compressor and a power turbine drivingly connected to one another by a second gas turbine shaft extending coaxial with the first gas turbine shaft, the high pressure compressor and the high pressure turbine. The apparatus also comprises a load coupling drivingly connecting the power turbine to the load and a dual-speed turning gear with an output shaft drivingly engageable to and disengageable from the load, the dual-speed turning gear comprising a low speed turning motor and a high speed turning motor, wherein the low speed turning motor and the high speed turning motor are configured to selectively drive the load. 1. An apparatus for driving a load , the apparatus comprising:a multiple-shaft gas turbine comprising:a high pressure compressor and a high pressure turbine drivingly connected to one another by a first gas turbine shaft;a low pressure compressor and a power turbine drivingly connected to one another by a second gas turbine shaft extending coaxial with the first gas turbine shaft, the high pressure compressor and the high pressure turbine;a load coupling drivingly connecting the power turbine to the load; anda dual-speed turning gear with an output shaft drivingly engageable to and disengageable from the load, the dual-speed turning gear comprising a low speed turning motor and a high speed turning motor, wherein the low speed turning motor and the high speed turning motor are configured to selectively drive the load.2. The apparatus according to claim 1 , further comprising an auxiliary turning motor configured to perform at least one of starting rotation of the high pressure compressor and the high pressure turbine and slow-turning the high pressure compressor and the high pressure turbine.3. The apparatus ...

MULTIPLE-CAPACITY CENTRIFUGAL COMPRESSOR AND CONTROL METHOD THEREOF

The present disclosure relates to a multiple-capacity centrifugal compressor, which includes a plurality of capacity-control mechanisms. Each of the capacity-control mechanisms includes an inlet guide vane and an outlet diffuser, so that the multiple-capacity centrifugal compressor provides a flexible control strategy. In addition, the present disclosure further provides a method for controlling the multiple-capacity centrifugal compressor that effectively adjusts and controls the capacity-control mechanisms by coarsely adjusting the inlet guide vanes and combined with subsequently adjusting the outlet diffusers. 1. A multiple-capacity centrifugal compressor , comprising:a plurality of capacity-control mechanisms respectively including an inlet guide vane and an outlet diffuser; anda controlling mechanism that calculates a pressure ratio of a pressure of the outlet diffuser to a pressure of the inlet guide vane of each of the capacity-control mechanisms based on the pressure of the inlet guide vane and the pressure and a temperature of the outlet diffuser, compares changes in the pressure ratios of the capacity-control mechanisms to determine control priority for the capacity-control mechanisms, and adjusts the inlet guide vane and outlet diffuser of the each of the capacity-control mechanisms based on the control priority, to control the plurality of capacity-control mechanisms.2. The multiple-capacity centrifugal compressor of claim 1 , wherein the control priority for the capacity-control mechanisms includes an adjusting order and an adjusting level of the capacity-control mechanisms.3. The multiple-capacity centrifugal compressor of claim 1 , wherein the controlling mechanism adjusts the inlet guide vane of each of the capacity-control mechanisms by adjusting an aperture of the inlet guide vane.4. The multiple-capacity centrifugal compressor of claim 1 , wherein the controlling mechanism adjusts the outlet diffuser of the each of the capacity-control mechanisms ...

CENTRIFUGAL COMPRESSOR IMPELLER

Provided is a centrifugal compressor impeller which is characterized in that leading edges on a shroud side of splitter blades are offset from a circumferentially equidistant position between full blades R and F toward a suction side Sb of the full blade F, and trailing edges on a hub side of the splitter blades are offset from a circumferentially equidistant position between the full blades toward the suction side Sb of the full blade F, so that a tip leakage vortex W flowing from a tip clearance between the tips of the full blades F and the shroud toward the leading edges of the splitter blades flows over the leading edges of the splitter blades 1. A centrifugal compressor impeller , comprising:a plurality of full blades that stand equally spaced in a circumferential direction and extend from a fluid inlet part to a fluid outlet part on a surface of a hub; andsplitter blades each provided to extend from a point in a flow passage formed between the full blades arranged adjacent each other, to the outlet part, whereinthe centrifugal compressor includes a tip clearance between tips of the full blades and a shroud, and leading edge portions on a shroud side of the splitter blades are offset from a circumferentially equidistant position between the full blades toward a suction side of the full blade, while trailing edge portions on a hub side of the splitter blades are offset from the circumferentially equidistant position between the full blades toward the suction side of the full blade, so that a tip leakage vortex flowing from the tip clearance toward the leading edge portions of the splitter blades flows over the leading edge portions of the splitter blades, or so that the leading edge portions conforms to a direction of the tip leakage vortex.2. The centrifugal compressor impeller according to claim 1 , wherein trailing edge portions on the shroud side of the splitter blades are offset from the circumferentially equidistant position between the full blades toward ...

TURBOCHARGER WITH A DOUBLE-VANE NOZZLE SYSTEM

Disclosed is a turbocharger with a dual-blade nozzle system, comprising a turbine housing, a fixed nozzle ring (), a linearly moving nozzle disk (), a mid-housing (), a rack (), rocker arm rods (), and a gear (), wherein airfoil-shaped fixed blades () are provided on the front end face of the fixed nozzle ring (), with blade-type holes () provided between the fixed blades (), and the fixed nozzle ring () is sheathed around the outside of the mid-housing () and fixed to the mid-housing () via screws; the linearly moving nozzle disk () is provided on the rear end of the fixed nozzle ring (), a group of moving blades () is provided on the front end face of the linearly moving nozzle disk (), the moving blades () are movably inserted into the blade-type holes (), the rear end face of the linearly moving nozzle disk () is fixedly connected to two rocker arm rods (), with the rocker arm rods () inserted into the mid-housing () and engaged with the rack () via the gear (). The provision of an additional blade along a nozzle flow passage in the turbocharger with the dual-blade nozzle system can not only reduce the cross-sectional area of the passage, but also separate the original nozzle into two gas passages to reduce the loss of gas flow due to transverse flow; in addition, the gas flow can flow at an optimum gas flow angle according to the original design, so that the turbine can keep working in the high efficiency region. 1. A turbocharger with a double-vane nozzle system , comprising a turbine housing , characterized in that it further comprises a fixed nozzle ring , a linearly moving nozzle disk , a middle-housing , a rack , a gear and rocker arm rods ,wherein a plurality of airfoil shape fixed vanes are provided on a front end face of the fixed nozzle ring, with blade-shaped holes arranged between the fixed vanes, the fixed nozzle ring is provided with a center hole at the center, and sheathed around circumference of a middle-housing and fixed to the middle-housing ...

COMPRESSOR OF AN EXHAUST-GAS TURBOCHARGER

A compressor () of an exhaust-gas turbocharger (ATL), having a compressor wheel () and a compressor housing () which has a housing longitudinal axis (A). The compressor wheel () is arranged in the housing. An inlet duct () runs from a compressor inlet () to the compressor wheel (). A recirculation duct () has a compressor-wheel-side inflow opening () and a compressor-inlet-side return flow opening (). The inflow opening () and the return flow opening () can be opened and closed. 11. A compressor () of an exhaust-gas turbocharger (ATL) , having{'b': '2', 'a compressor wheel (); and'}{'b': '3', 'claim-text': which has a housing longitudinal axis (A),', {'b': '2', 'in which the compressor wheel () is arranged,'}, {'b': 5', '4', '2', '6', '7', '8, 'which has an inlet duct (), said inlet duct running from a compressor inlet () to the compressor wheel () and having a a hooded ported shroud recirculation duct () which has a compressor-wheel-side inflow opening () and a compressor-inlet-side return flow opening (), and'}, {'b': 7', '8, 'means for opening and closing at least one of the inflow opening () and the return flow opening ().'}], 'a compressor housing ()'}2691014113. The compressor as claimed in claim 1 , wherein the recirculation duct () is delimited by an axially movable sleeve () claim 1 , an axially movable slide () and an inner surface (′) of an adjacent housing region (′) of the compressor housing ().310118. The compressor as claimed in claim 2 , wherein the slide () has a rounded first return flow surface () which leads to the return flow opening ().4912. The compressor as claimed in claim 3 , wherein the sleeve () has a rounded second return flow surface ().511137. The compressor as claimed in claim 2 , wherein the housing region (′) has a first inflow surface () which is inclined relative to the longitudinal axis (A) and which leads to the inflow opening ().691413. The compressor as claimed in claim 5 , wherein the sleeve () has a second inflow surface () ...

INTEGRATED MOBILE GROUND SUPPORT SYSTEM FOR SERVICING AIRCRAFT

An integrated mobile ground support system includes a wheeled cart on which is mounted a power plant to power an air compressor to provide bleed air to an aircraft. The power plant also powers an electrical generator , the output of which is controlled and converted to AC and/or DC power to meet the power requirements of the aircraft. An air conditioning unit is also mounted on the cart for providing conditioned air to the aircraft. 1. An integrated ground support system for aircraft to provide pressurized air , conditioned air , and electrical power to aircraft , the integrated ground support system comprising:a frame on which the integrated ground support system is arranged as a singular assembly;a power plant mounted on the frame, the power plant producing power to operate the ground support system;an air compressor mounted on the frame to produce compressed air for use by the aircraft;a drive train interconnecting the power plant to the air compressor to power the air compressor;an air conditioner mounted on the frame to produce conditioned air for use by the aircraft;an electrical power generator mounted on the frame to produce electrical power for use by the aircraft; andthe drive train interconnecting the power plant to the electrical power generator to power the electrical generator.2. The integrated ground support system according to claim 1 , wherein the power plant is selected from the group consisting of:an internal combustion diesel engine;an internal combustion gasoline engine; andan electric motor.3. The integrated ground support system according to claim 1 , wherein the air compressor is selected from the group consisting of a screw-type compressor claim 1 , a centrifugal compressor claim 1 , a piston-type compressor.4. The integrated ground support system according to claim 1 , wherein:the power plant producing a rotational output; andthe drive train comprising a first transmission for increasing the rotational output speed of the power plant to ...

Parallel Twin-Impeller Compressor Having Swirl-Imparting Device For One Impeller

An turbocharger includes a parallel twin-impeller compressor and separate inlets into the two impellers. A first or outboard impeller receives one stream of inlet air and a second or inboard impeller receives its own separate stream of inlet air by way of a generally annular inlet volute surrounding the inlet to the second impeller. Air is fed from the inlet volute radially inwardly through a feed passage to the inlet to the second impeller. A plurality of inlet guide vanes are located in the feed passage for the second impeller, the inlet guide vanes creating a swirling air stream into the second impeller. Introduction of swirl to the second impeller alters the flow distribution between the impellers and affects the stability of the overall stage.

CRYOGENIC VIBRATION SENSOR AND INSULATOR PAD ASSEMBLY, AND CRYOGENIC PUMPS INCLUDING THE SAME

A cryogenic-rated vibration sensor generally includes a cryogenic-rated accelerometer mounted to a top planar surface of an insulation block, wherein the insulation block includes a threaded opening on a bottom planar surface thereof for attachment to an object. Also disclosed are cryogenic pumps including the cryogenic-rated vibration sensor. 1. A cryogenic pump comprising:a suction pot including an inlet at a lower portion;a head plate attached to a top of the suction port, wherein the cap includes a discharge outlet;a centrifugal pump comprising a vertically oriented pump shaft disposed within the suction pot and suspended from the cap, wherein the pump is configured to move a cryogenic fluid through the inlet to the discharge outlet; andat least one vibration sensor mounted to a least one component of the cryogenic pump, wherein the at least one vibration sensor comprises an insulation block having a bottom surface in direct contact with the at least component and an accelerometer coupled to a top surface of the insulation block and free from direct contact with the at least one pump component.21. The cryogenic pump of clam , wherein the at least one component is the head plate and the vibration sensor is mounted to the head plate and is parallel to axial rotation of the pump shaft.31. The cryogenic pump of clam , wherein the insulation block is a polytetrafluoroethylene material.41. The cryogenic pump of clam , wherein the insulation block is a thermoset reinforced plastic comprising a reinforcing substrate and a thermoset resin binder.54. The cryogenic pump of clam , wherein the reinforcing substrate is selected from the group consisting of woven glass cloth , random glass mat , glass filaments , woven canvas cotton fabric , woven linen cotton fabric , paper , woven aramid fabric , random mat aramid , woven graphite fabric , and random mat graphite and the thermoset resin binder is selected from epoxies , melamines , phenolics , polyesters , and silicones.61. ...

METHOD AND APPARATUS FOR COMPOSITION BASED COMPRESSOR CONTROL AND PERFORMANCE MONITORING

A method and apparatus controls a compressor, where the compressor inlet gas may contain water and/or non-aqueous liquid. The method includes the steps of measuring temperature at the compressor inlet and/or outlet side, measuring pressure at the compressor inlet and outlet side in order to determine a compressor pressure ratio, measuring fluid mixture density at the compressor inlet and/or outlet side, measuring individual volume fractions of gas, water and non-aqueous liquid at the compressor inlet and/or outlet side, measuring fluid velocity at the compressor inlet and/or outlet side, and determining individual flow rates of gas, water and non-aqueous liquid on the basis of the measured individual volume fractions of gas, water and non aqueous liquid and the fluid velocity at the compressor inlet and/or outlet side. 1. A method for surge protection of a compressor with an inlet and outlet side , wherein an inlet gas flow or stream of the compressor comprises time-varying amounts of water and/or non-aqueous liquid , by continuously or discontinuously measuring and/or determining various parameters of the fluids passing through said compressor , the method comprising the steps of:a) measuring temperature at the compressor inlet and/or outlet side,b) measuring pressure at the compressor inlet and outlet sides in order to determine a compressor pressure ratio,c) measuring fluid mixture density at the compressor inlet and/or outlet side,d) measuring individual volume fractions of gas, water and non-aqueous liquid at the compressor inlet and/or outlet side,e) measuring fluid velocity at the compressor inlet and/or outlet side,f) determining individual flow rates of gas, water and non-aqueous liquid on the basis of the measured individual volume fractions of gas, water and non-aqueous liquid and the fluid velocity at the compressor inlet and/or outlet side,g) based on the determined individual flow rates of gas, water and non-aqueous liquid, determining an actual fluid ...

CLAMPING RING WITH FORCE LIMITATION

A clamping ring () for the connection of two flanges includes an open ring section () which is designed for receiving the flanges () to be connected. The flanges () have ends connected by way of a clamping device (-) which is attached on the ring section (). With the clamping device (-), the ends of the ring section () can be moved onto one another and thus the clamping ring () can be clamped amid the integration of the flanges (). The clamping device (-) includes a clamping force limitation device (), in order to prevent an unintended failure of the clamping device (-) on assembly. 1. A clamping ring for the connection of two flanges , the clamping ring comprising:at least one open ring section for receiving the flanges to be connected:a clamping device for connecting ends of the open ring section, the clamping device being attached on the ring section, wherein the ends of the open ring section are moved to one another and can be clamped amid the integration of the flanges, wherein the clamping device comprises a clamping force limitation means for limiting a clamping force applied by the clamping device.2. A clamping ring according to claim 1 , with which the ring section has an inwardly open channel profile.3. A clamping ring according to claim 1 , wherein the clamping device comprises a screw-nut arrangement with a positive-fit means for applying a tool claim 1 , wherein the positive-fit means forms the clamping force limitation means.4. A clamping ring according to claim 1 , wherein the clamping device comprises a clamping screw having an end with a tool receiver is arranged thereat claim 1 , said tool receiver being dimensioned such that a force which can be transmitted from the tool onto the screw is dimensioned for the correct limitation of the clamping force.5. A clamping ring according to claim 4 , wherein the clamping screw comprises a screw head with an inner profile for receiving the tool claim 4 , wherein the inner profile of the screw head and/or the ...

FAN, MOLDING DIE, AND FLUID FEEDER

A fan includes a plurality of blade portions arranged spaced apart from each other in a circumferential direction, each blade portion having a blade surface including a pressure surface disposed on a rotational direction side of the fan and a suction surface disposed on a back side of the pressure surface. The plurality of blade portions include a first blade portion and a second blade portion different from each other in at least one of an outer peripheral blade tip angle and an inner peripheral blade tip angle, and are provided such that a discrepancy angle is equal among a plurality of the blade portion. 1. A fan comprising a plurality of blade portions arranged spaced apart from each other in a circumferential direction , each blade portion having a blade surface including a pressure surface disposed on a rotational direction side of the fan and a suction surface disposed on a back side of said pressure surface , whereinwhen cut along a plane orthogonal to a rotation axis of the fan, said blade portion has an inner edge portion at which a center line between said pressure surface and said suction surface intersects an inner peripheral-side blade tip, and an outer edge portion at which the center line intersects an outer peripheral-side blade tip,as the fan is rotated, a fluid flow is produced on said blade surface to flow between said inner edge portion and said outer edge portion,when an angle between a straight line passing through a rotational center of the fan and said outer edge portion and a tangent of said center line at said outer edge portion is defined as an outer peripheral blade tip angle, an angle between a straight line passing through the rotational center of the fan and said inner edge portion and a tangent of said center line at said inner edge portion is defined as an inner peripheral blade tip angle, and an angle between a chord line in contact with the inner peripheral-side and outer peripheral-side blade tips on said pressure surface side, ...

METHOD FOR MAKING AN IMPELLER FROM SECTOR SEGMENTS

A manufacturing technique for impellers for a centrifugal rotating machine is provided. The impeller is made by composition of single vanes pieces that fit to the hub or directly to the rotor shaft by welding, friction welding or a mechanical locking system. The manufacturability of the segments is easy fast and cheap and make it possible to use advanced manufacturing technologies like additive manufacturing of the type of Direct Metal Laser Melting. 1. A method for manufacturing an impeller for a centrifugal rotating machine comprising a substantially disk shaped main body comprising a front surface and a rear surfaces , a shroud comprising a front surface and a rear surfaces arranged spaced from the front surface of the main body , a plurality of blades , attached to the front surface of the main body joining the main body with the shroud wherein side surfaces of the blades , the front surface of the body , and the rear surface of the shroud form flow passages for compressing air , the method comprisingmaking a single segments of the impeller comprising a single blade, a section of the main body and the corresponding section of the shroud; andsuccessively joining together the plurality of segments to form the impeller.2. The method according to claim 1 , wherein the segments are joined together by welding claim 1 , or friction welding.3. The method according to claim 1 , wherein the impeller is attached to a hub that is attached to a rotor shaft of the machine claim 1 , or is attached directly to the rotor shaft.4. The method according to claim 3 , wherein the impeller is attached to the hub or directly to the rotor shaft by Cold Metal Transfer (CMT) deposition.5. The method according to claim 1 , wherein the single segments are attached to the hub or directly to the rotor shaft of the machine.6. The method according to claim 3 , wherein the segments are attached to the hub or to the rotor shaft by welding claim 3 , friction welding claim 3 , or by a mechanical ...

METHOD FOR ASSEMBLING COMPRESSOR, AND BUNDLE GUIDE DEVICE

A method for assembling a compressor comprises: a bundle arrangement step in which a bundle is arranged behind the opening of a casing in the insertion direction; a first insertion step in which the front end of the bundle is inserted into the casing by moving the bundle by means of both an outside traveling device and an intermediate traveling device; and a second insertion step in which the intermediate traveling device is removed from the bundle and the bundle is inserted further inward into the casing by moving the bundle by means of both an inside traveling device and the outside traveling device. 1. A method for assembling a compressor including a bundle having a rotor therein , a casing into which the bundle is inserted , and an inside traveling device supporting the front end of the bundle in the direction of the insertion into the casing and capable of traveling in the insertion direction on the inner peripheral surface of the casing , and an outside traveling device supporting the rear end of the bundle in the insertion direction and capable of traveling in the insertion direction on a base surface disposed outside the casing and an intermediate traveling device supporting the intermediate portion of the bundle between the inside traveling device and the outside traveling device in the insertion direction and capable of traveling on the base surface being removable from the compressor , comprising:a bundle arrangement step in which the bundle is arranged behind an opening of the casing in the insertion direction;a first insertion step in which the front end of the bundle is inserted into the casing by moving the bundle by means of both the outside traveling device and the intermediate traveling device; anda second insertion step in which the intermediate traveling device is removed from the bundle and the bundle is inserted further inward into the casing by moving the bundle by means of both the inside traveling device and the outside traveling device.2. ...

COMPRESSOR STAGE EGR INJECTION

A product may include a bearing housing in which a shaft may be supported by a bearing so that it may rotate. A compressor wheel may be disposed on the shaft. A compressor cover may be connected with the bearing housing, which may form a compressor body and may define a chamber within which the compressor wheel may rotate. A diffuser may extend radially outward from the chamber and may receive gas from the compressor wheel. An inlet may be provided to the compressor body, which may receive a supply of exhaust gas. An EGR distribution cavity may be defined within the compressor body and may extend around the shaft. An EGR inlet channel may extend into the bearing housing from the inlet to the EGR distribution cavity. An EGR passage may extend from the EGR distribution cavity to the diffuser. 1. A product comprising a bearing housing in which a shaft is supported by a bearing to rotate , a compressor wheel disposed on the shaft , a compressor cover connected with the bearing housing creating a compressor body defining a chamber within which the compressor wheel rotates , a diffuser extending radially outward from the chamber and receiving gas from the compressor wheel , an inlet on the compressor body receiving a supply of exhaust gas , an EGR distribution cavity defined completely within the compressor body and extending around the shaft , an EGR inlet channel extending into the bearing housing from the inlet to the EGR distribution cavity , and an EGR passage extending from the EGR distribution cavity to the diffuser.2. The product according to wherein the shaft rotates on an axis and the EGR inlet channel extends in a direction toward the axis.3. The product according to wherein the EGR distribution cavity extends in a circle around the shaft and at any point along the circle has a consistent cross section.4. The product according to wherein the compressor wheel includes a compressor wheel tip at its radially outermost perimeter claim 1 , and wherein the bearing ...

Multi-Piece Compressor Wheel

A compressor wheel assembly for a forced induction device includes an impeller member and a plate member. The impeller member is formed of a polymer material, and includes a hub portion and a plurality of blades extending from an outer surface of the hub portion. The hub portion includes an outer peripheral portion formed therewith. The plate member is connected to the outer peripheral portion of the impeller member to be rotationally fixed thereto. The plate member being formed of a metal material. 1. A compressor wheel assembly for a forced induction device , the compressor wheel assembly comprising:an impeller member formed of a polymer material and having a hub portion and a plurality of blades extending from an outer surface of the hub portion, the hub portion having an outer peripheral portion formed therewith; anda plate member connected to the outer peripheral portion of the impeller member to be rotationally fixed thereto, the plate member being formed of a metal material.2. The compressor wheel assembly according to claim 1 , wherein a first axial surface of the plate member is mated against a first axial surface of the impeller member.3. The compressor wheel assembly according to claim 2 , wherein the impeller member includes a flange portion that forms the outer peripheral portion claim 2 , and the plate member extends radially around the flange portion to connect the plate member to the impeller member.4. The compressor wheel assembly according to claim 3 , wherein the plate member extends circumferentially entirely around the flange portion.5. The compressor wheel assembly according to claim 4 , wherein the flange portion extends axially away from the hub portion.6. The compressor wheel assembly according to claim 4 , wherein the flange portion extends radially outward beyond the blades where coupled to the hub portion.7. The compressor wheel assembly according to claim 6 , wherein the first axial surface of the plate member is bonded to the first ...

ELECTRIC CENTRIFUGAL COMPRESSOR OF A TURBINE ENGINE OR AIRCRAFT

The invention relates to an electric centrifugal compressor, in particular for a turbine engine or aircraft, including an electric motor, the stator of which is supported by a casing and the rotor of which includes a shaft mounted inside the casing, driving a centrifugal compressor impeller, said, the casing having a double skin and including two substantially cylindrical, coaxial skins extending around the engine and defining between them an annular section suitable for the circulation of a first cooling air flow, one inlet of which is located at a first longitudinal end of the shaft and an outlet of which is connected to a second longitudinal end of the shaft, which supports the centrifugal compressor impeller, wherein it includes means (J) for collecting a second air flow at the outlet of the centrifugal compressor impeller, means for channelling the second air flow along the shaft up to the first end, and means for discharging the second air flow out of the casing in order to prevent same from mixing with the first air flow. 1. Electric centrifugal compressor , in particular for a turbine engine or aircraft , comprising an electric motor , the stator of which is supported by a casing and the rotor of which includes a shaft mounted inside said casing , said shaft driving a centrifugal compressor impeller , said casing having a double skin and comprising two substantially cylindrical , coaxial skins extending around said engine and defining between them an annular flow path suitable for the circulation of a first cooling air flow , one inlet of which is located at a first longitudinal end of said shaft and an outlet of which is connected to a second longitudinal end of said shaft , which supports said centrifugal compressor impeller , wherein said compressor includes means (J) for collecting a second air flow at the outlet of said centrifugal compressor impeller , means for channelling said second air flow along said shaft up to said first end , and means for ...

SUPPLEMENTAL COOLING OF CABIN AIR COMPRESSOR MOTOR

An assembly includes a first conductor, a tube extending along the first conductor between first and second ends of the first conductor, and an electrically-insulating barrier surrounding the first conductor and the tube such that the tube is spaced from the first conductor. Another assembly includes a plurality of conductors, a first tube extending along at least one of the conductors, and an electrically-insulating barrier enclosing the conductors and the first tube in which the barrier maintains spacing between the first tube and one or more adjacent conductors. In each assembly, the tube is configured to permit a fluid to flow therethrough. A method of manufacturing a feeder cable includes providing conductors that extend between first and second lugs of each conductor, enclosing the conductors within an electrically-insulating layer, and forming a cooling passage within the electrically-insulating layer that extends along one of the conductors. 1. An assembly comprising:a first conductor extending from a first end to a second end;a tube extending along the first conductor between the first and second ends of the first conductor; andan electrically-insulating barrier surrounding the first conductor and the tube such that the tube is spaced from the first conductor, wherein the tube is configured to permit a fluid to flow therethrough.2. The assembly of and further comprising:a cabinet in flow communication with a first end of the tube, wherein the cabinet is configured to mount one or more electrical components; anda first duct in flow communication with a second end of the tube, wherein a first pressure within the first duct is less than a second pressure within the cabinet.3. The assembly of claim 2 , wherein the tube has a hydraulic diameter and a length that produce a pressure drop associated with the fluid flowing therethrough claim 2 , and wherein the pressure drop is less than a differential pressure between the first and second pressures.4. The assembly ...

INTEGRATED SYSTEM FOR CONVERTING NUCLEAR ENERGY INTO ELECTRICAL, MECHANICAL, AND THERMAL ENERGY AND METHODS FOR USING THE SAME

Provided is an apparatus for generating electricity, mechanical energy, and/or process and district heat using a gas propellant chamber fueled with fissile material and enclosed in a sealed containment vessel which also contains an operating gas. The system allows for the operating gas to be compressed as it enters the nuclear fuel chamber where it is heated. As the operating gas exits the nuclear fuel chamber, the kinetic energy of the gas is converted to rotational energy by a variety of methods. The rotational energy is further converted to electricity, mechanical energy, and/or process and district heat. The operating gas circulates in the containment vessel and is cooled prior to re-entering the gas propellant chamber. The apparatus thereby provides a simpler and safer design that is both scalable and adaptable. The apparatus is easily and safely transportable and can be designed to be highly nuclear-proliferation-resistant. 1. An apparatus for generating electricity comprising:a gas propellant chamber comprised of an annular body defining first and second ends, the first end of the annular body defining an inlet assembly that is configured to draw operating gas into the gas propellant chamber and the second end defining an exhaust assembly that is configured to expel operating gas from the gas propellant chamber, wherein the gas propellant chamber is housed in a containment vessel, the containment vessel having an inner wall and defining a region between the inner wall and the annular body of the gas propellant chamber, the region forming a bypass for operating gas to pass around the annular body;a nuclear fuel chamber positioned within the annular body of the gas propellant chamber between the first and second ends, the nuclear fuel chamber configured to heat the operating gas;a compressor positioned proximate the first end of the gas propellant chamber, the compressor configured to compress the operating gas prior to entry into the nuclear fuel chamber;a ...

INTEGRATED SYSTEM FOR CONVERTING NUCLEAR ENERGY INTO ELECTRICAL, MECHANICAL, AND THERMAL ENERGY AND METHODS FOR USING THE SAME

Provided is an apparatus for generating electricity, mechanical energy, and/or process and district heat using a gas propellant chamber fueled with fissile material and enclosed in a sealed containment vessel which also contains an operating gas. The system allows for the operating gas to be compressed as it enters the nuclear fuel chamber where it is heated. As the operating gas exits the nuclear fuel chamber, the kinetic energy of the gas is converted to rotational energy by a variety of methods. The rotational energy is further converted to electricity, mechanical energy, and/or process and district heat. The operating gas circulates in the containment vessel and is cooled prior to re-entering the gas propellant chamber. The apparatus thereby provides a simpler and safer design that is both scalable and adaptable. The apparatus is easily and safely transportable and can be designed to be highly nuclear-proliferation-resistant. 1. An apparatus for generating electricity comprising:a gas propellant chamber comprised of an annular body defining first and second ends, the first end of the annular body defining an inlet assembly that is configured to draw operating gas into the gas propellant chamber and the second end defining an exhaust assembly that is configured to expel operating gas from the gas propellant chamber, wherein the gas propellant chamber is housed in a containment vessel, the containment vessel having an inner wall and defining a region between the inner wall and the annular body of the gas propellant chamber, the region forming a bypass for operating gas to pass around the annular body;a nuclear fuel chamber positioned within the annular body of the gas propellant chamber between the first and second ends, the nuclear fuel chamber configured to heat the operating gas;a compressor positioned proximate the first end of the gas propellant chamber, the compressor configured to compress the operating gas prior to entry into the nuclear fuel chamber;a ...

INTEGRATED SYSTEM FOR CONVERTING NUCLEAR ENERGY INTO ELECTRICAL, MECHANICAL, AND THERMAL ENERGY AND METHODS FOR USING THE SAME

Provided is an apparatus for generating electricity, mechanical energy, and/or process and district heat using a gas propellant chamber fueled with fissile material and enclosed in a sealed containment vessel which also contains an operating gas. The system allows for the operating gas to be compressed as it enters the nuclear fuel chamber where it is heated. As the operating gas exits the nuclear fuel chamber, the kinetic energy of the gas is converted to rotational energy by a variety of methods. The rotational energy is further converted to electricity, mechanical energy, and/or process and district heat. The operating gas circulates in the containment vessel and is cooled prior to re-entering the gas propellant chamber. The apparatus thereby provides a simpler and safer design that is both scalable and adaptable. The apparatus is easily and safely transportable and can be designed to be highly nuclear-proliferation-resistant. 1. An apparatus for generating electricity comprising:a gas propellant chamber comprised of an annular body defining first and second ends, the first end of the annular body defining an inlet assembly that is configured to draw operating gas into the gas propellant chamber and the second end defining an exhaust assembly that is configured to expel operating gas from the gas propellant chamber, wherein the gas propellant chamber is disposed in a containment vessel, the containment vessel having an inner wall defining a circulation path for the operating gas to travel from the conversion apparatus to the inlet assembly;a nuclear fuel chamber positioned within the annular body of the gas propellant chamber between the first and second ends, the nuclear fuel chamber configured to heat the operating gas;a compressor positioned proximate the first end of the gas propellant chamber, the compressor configured to compress the operating gas prior to entry into the nuclear fuel chamber;a conversion apparatus positioned proximate the second end of the ...

CENTRIFUGAL COMPRESSOR

A centrifugal compressor comprises an impeller including a hub and a plurality of blades. The hub is provided with a through hole. The hub has an external radial surface having an inner external radial surface and an outer external radial surface. The outer external radial surface is formed closer to a back surface than an imaginary curved surface having as a radius a radius of curvature of the inner external radial surface at a radially outer edge thereof. 1. A centrifugal compressor comprising a rotation shaft and an impeller fixed to the rotation shaft and rotating together with the rotation shaft , a hub having an external radial surface having a shape gradually increasing in diameter from one side of the rotation shaft toward the other side of the rotation shaft, and a back surface formed on the other side of the rotation shaft, and', 'a plurality of blades provided on the external radial surface of the hub,, 'the impeller including'}the hub being provided with a through hole formed therethrough between the external radial surface and the back surface, an inner external radial surface located inwardly of the through hole in a radial direction of the hub and', 'an outer external radial surface located outwardly of the through hole in the radial direction of the hub,, 'the external radial surface having'}the outer external radial surface being formed closer to the back surface than an imaginary curved surface having as a radius a radius of curvature of the inner external radial surface at an edge thereof outer in the radial direction.2. The centrifugal compressor according to claim 1 , wherein a ratio of a distance in a direction parallel to the rotation shaft between the imaginary curved surface and an edge of the outer external radial surface inner in the radial direction to a distance in the direction parallel to the rotation shaft between the outer edge and the inner edge is larger than 0 and smaller than 1.3. The centrifugal compressor according to claim 1 , ...

CENTRIFUGAL COMPRESSOR AND TURBOCHARGER

A centrifugal compressor includes: an impeller including a main body portion and a plurality of blades provided on an outer peripheral surface of the main body portion; an intake flow path facing the impeller in a rotational axis direction; and a throttling mechanism including a throttling member provided in the intake flow path, a ratio obtained by dividing a distance between an outer peripheral end of a leading edge of the blade and the throttling member by a maximum protruding height of the throttling member protruding from an inner wall surface of the intake flow path is equal to or less than 4. 1. A centrifugal compressor comprising:an impeller including a main body portion and a plurality of blades provided on an outer peripheral surface of the main body portion;an intake flow path facing the impeller in a rotational axis direction; anda throttling mechanism including a throttling member provided in the intake flow path, a ratio obtained by dividing a distance between an outer peripheral end of a leading edge of the blade and the throttling member by a maximum protruding height of the throttling member protruding from an inner wall surface of the intake flow path is equal to or less than 4.2. The centrifugal compressor according to claim 1 ,wherein the throttling member includes an opposing surface facing the outer peripheral end in an axial direction of the impeller, andthe opposing surface is located between a position of the outer peripheral end and a position of an inner peripheral end of the leading edge in the axial direction.3. A turbocharger comprising the centrifugal compressor according to .4. A turbocharger comprising the centrifugal compressor according to . This application is a continuation application of International Application No. PCT/JP2020/013848, filed on Mar. 26, 2020, which claims priority to Japanese Patent Application No. 2019-086357 filed on Apr. 26, 2019, the entire contents of which are incorporated by reference herein.The present ...

CENTRIFUGAL COMPRESSOR DIFFUSER CONTROL

A centrifugal refrigerant compressor system includes an impeller connected to a shaft. A diffuser is arranged on a downstream side of the impeller and is configured to regulate refrigerant flow exiting the impeller. A magnetic bearing supports the shaft. A sensing element is configured to produce an output relating to a shaft condition. A controller is configured to receive the output and determine an undesired impeller operating condition based upon the shaft condition. The controller is configured to command the diffuser to a desired state in response to the undesired impeller operating condition. 1. A centrifugal refrigerant compressor control system comprising:an impeller connected to a shaft;a diffuser arranged on a downstream side of the impeller and configured to regulate refrigerant flow exiting the impeller;a magnetic bearing system supporting the shaft;a sensing element from the magnetic control system configured to produce an output relating to a shaft condition; anda controller configured to receive the output and determine an undesired impeller operating condition based upon the shaft condition, the controller configured to command the diffuser to a desired state in response to the undesired impeller operating condition.2. The system according to claim 1 , wherein the magnetic bearing includes first and second radial bearings and an axial bearing.3. The system according to claim 2 , wherein a radial bearing nearest the impeller provides a sensing element claim 2 , the sensing element including at least one position sensor.4. The system according to claim 2 , wherein at least one impeller is supported on the shaft and both the first and second radial bearings are used as the sensing elements.5. The system according to claim 1 , wherein the diffuser is provided by a mechanical variable geometry diffuser.6. The system according to claim 1 , wherein the diffuser is provided by a fluid injector.7. The system according to claim 1 , comprising a variable speed ...

CENTRIFUGAL PUMP DEVICE

This centrifugal blood pump device comprises an impeller which is provided within a blood chamber, a permanent magnet which is provided to one surface of the impeller, a permanent magnet which is provided to the inner wall of the blood chamber, permanent magnets which are provided to the other surface of the impeller, and multiple sets of magnetic bodies and coils, which are disposed within a motor chamber and which rotationally drive the impeller with a partition wall located between the impeller and the sets of magnetic bodies and coils. The magnetic bodies are formed in a solid cylindrical shape. The configuration enables the impeller to be smoothly activated for rotation by controlling a coil current. 1. A centrifugal pump device , comprising:a housing including a first and a second chamber divided by a barrier wall;an impeller rotatably provided along the barrier wall in the first chamber that sends a liquid by centrifugal force at the time of rotation; anda drive portion provided in the second chamber that rotatably drives the impeller with the barrier wall therebetween; and comprisinga first magnetic body provided on one side face of the impeller,a second magnetic body provided on an inner wall of the first chamber opposing one side face of the impeller that attracts the first magnetic body, anda plurality of first permanent magnets provided the other side face of the impeller arranged along a same circle such that adjacent magnetic poles are mutually different; whereinthe drive portion includes a plurality of a third magnetic bodies provided opposing the plurality of first permanent magnets forming a cylindrical shape, respectively, anda plurality of coils provided corresponding to each of the plurality of third magnetic bodies wound around each corresponding third magnetic body to generate a rotating magnetic field;a first attractive force between the first and the second magnetic bodies and a second attractive force between the plurality of first permanent ...

BALANCED VANES AND INTEGRATED ACTUATION SYSTEM FOR A VARIABLE GEOMETRY TURBOCHARGER

A variable geometry turbine (VGT) for turbochargers incorporates a turbine nozzle having a plurality of vanes, each vane having an airfoil with an inner disc and an outer disc. A first nozzle plate incorporates pockets to receive the inner discs with the inner discs substantially flush with a nozzle surface on the first nozzle plate. A second nozzle plate has pockets to receive the outer discs with outer discs substantially flush with a second nozzle surface. An integral actuation system rotates the plurality of vanes for variation of the nozzle geometry. 1. A variable geometry turbine (VGT) for turbochargers comprising:a turbine nozzle having a plurality of vanes each vane having an airfoil with an inner disc and an outer disc;a first nozzle plate having pockets to receive the inner discs, said inner discs substantially flush with a nozzle surface on the first nozzle plate;a second nozzle plate having pockets to receive the outer discs, said outer discs substantially flush with a second nozzle surface; and,an actuation system rotating the plurality of vanes.2. The VGT as defined in wherein each vane further comprises a drive peg extending from the inner disc claim 1 , said drive peg having a key to engage a unison ring.3. The VGT as defined in further comprising:a bearing pin for each of the plurality of vanes, said bearing pin extending from the first nozzle plate and received in a aperture in the drive peg.4. The VGT as defined in wherein each of the plurality of vanes has a hole extending through the vane concentric with the aperture in the drive peg and said bearing pin includes a post extending through the hole to protrude beyond the outer disc claim 3 , said pockets in the second nozzle plate having reliefs to receive the posts whereby said second nozzle plate supported in the posts.5. The VGT as defined in wherein the first nozzle plate has an inner circumference wall and the keys extend through windows relieved through the wall in the pockets in the first ...

SELF-DRIVEN APPARATUS FOR CHARGING EXPANDED AIR

Provided is an air expanding apparatus driven by a rotating magnetic field and expanding or accelerating and transferring air. The air expanding apparatus includes at least one expander sucking air and giving kinetic energy to intake air; an expander case leading external air sucked by the expander into the expander at a higher flow velocity and converting pressure energy of air out of the expander into air having velocity energy to discharge air; and a rotating body accelerator equipped with the expander and the expander case and driving the expander. Here, the rotating body accelerator drives the expander by generating a torque by interaction with an intake negative pressure, by generating a torque by interaction with the intake negative pressure and using supplied power, by generating a torque using supplied power, or by generating a torque by interaction with supplied supercharged pressure. 1. An air expanding apparatus driven by a rotating magnetic field and expanding or accelerating and transferring air , the apparatus comprising:at least one expander sucking air and giving kinetic energy to intake air;an expander case leading external air sucked by the expander into the expander at a higher flow velocity and converting pressure energy of air out of the expander into air having velocity energy to discharge air; anda rotating body accelerator equipped with the expander and the expander case and driving the expander,wherein the rotating body accelerator drives the expander by generating a torque by interaction with an intake negative pressure, by generating a torque by interaction with the intake negative pressure and using supplied power, by generating a torque using supplied power, or by generating a torque by interaction with supplied supercharged pressure.2. The air expanding apparatus of claim 1 , wherein the rotating body accelerator comprises:a complex rotating body, the direction of a magnetic flux of which faces an axial direction of a frame;a front ...

COMPRESSOR WHEEL, CENTRIFUGAL COMPRESSOR, MACHINING METHOD FOR COMPRESSOR WHEEL, AND MACHINING APPARATUS FOR COMPRESSOR WHEEL

A compressor wheel includes a hub fixed to one end of a shaft, and a plurality of blades arranged on an outer periphery of the hub. Each blade has a leading edge and a trailing edge, and includes a wing surface that is a curved surface drawn by a trajectory of movement of a linear bus line. The bus line has an intersection with the trailing edge on the trailing edge side, and inclines to a direction approaching an inside of a radial direction of the shaft, as going from one end side to the other end side in an axial direction of the shaft. 1. A compressor wheel that rotates integrally with a shaft , and compresses and sends out a fluid sucked from a suction port formed in a centrifugal compressor body outward in a radial direction of the shaft , the compressor wheel comprising:a hub fixed to one end of the shaft; anda plurality of blades arranged on an outer periphery of the hub,wherein each blade has a leading edge that is an end of an upstream side in a flow direction of the fluid, and a trailing edge that is an end of a downstream side in the flow direction of the fluid, and includes a wing surface that is a curved surface drawn by a trajectory of movement of a linear bus line, andwherein the bus line has an intersection with the trailing edge on the trailing edge side, and the bus line having the intersection with the trailing edge inclines in a direction approaching an inside in the radial direction of the shaft, as going from one end side toward other end side in an axial direction of the shaft.2. The compressor wheel according to claim 1 , whereinan angle between the trailing edge located closer to the other end side in the axial direction of the shaft than the intersection and the bus line located closer to the other end side in the axial direction of the shaft than the intersection is not less than 20 degrees.3. A centrifugal compressor comprising:a centrifugal compressor body;a shaft rotatably supported by the centrifugal compressor body; anda compressor ...

ANTI-SURGE SPEED CONTROL FOR TWO OR MORE COMPRESSORS

The present invention relates to a method and control system to control the speed of centrifugal compressors operating within a vacuum pressure swing adsorption process to avoid an operation at which surge can occur and directly driven by an electric motor that is in turn controlled by a variable frequency drive, while subsequently operating the vacuum pressure swing process between set limits of highest adsorption and lowest desorption pressure. In accordance with present invention an optimal speed for operation of the compressor is determined at which the compressor will operate along a peak efficiency operating line of a compressor map thereof. This speed is adjusted by a feed back speed multiplier when the flow or other parameter referable to flow through the compressor is below a minimum and a feed forward multiplier during evacuation and evacuation with purge steps that multiplies the feed back multiplier to increase speed of the compressor and thereby avoid surge. The speed is then adjusted by a global speed factor which serves to adjust the average speed of the motors over all steps of the repeating cycle such that the process operates within high and low pressure limits. 1. A method of controlling centrifugal compressor speed within a vacuum pressure swing adsorption apparatus , wherein said apparatus comprises two or more centrifugal compressors , wherein each centrifugal compressor has an inlet configured to receive a fluid stream and an outlet configured to discharge a pressurized fluid stream , said method comprising:measuring and calculating the flow rate of a fluid stream entering the inlet of each centrifugal compressor, the centrifugal compressors directly driven by electric motors having a speed controlled by a variable frequency drive;measuring and calculating the pressure of the pressurized fluid stream at the outlet of each compressor and the pressure of the fluid stream at the inlet of each compressor and calculating the pressure ratio of ...

Radial compressor and exhaust gas recirculation system

The invention relates to a radial compressor (2) comprising an impeller (4), a motor (8) for driving the impeller (4), which motor (8) exhibits a shaft (40), a housing (10) for the motor (8) and a distribution system (18) for a service fluid for the motor (8), wherein the distribution system (18) comprises a main feed (28), a manifold (36) and at least two feed branches (37, 38), wherein the service fluid can be conducted through the main feed (28), the manifold (36) and the at least two feed branches (37, 38), and wherein the main feed (28) and the feed branches (37, 38) join in the manifold (36). A radial compressor with an enhanced design may be achieved in that the distribution system (18) is an integral part of the housing (10) and in that the housing (10) comprises several housing parts (12, 14, 16), which are connected to each other and which are arranged adjacent to each other in longitudinal direction of the shaft (40), where the distribution system (18) extends through at least two of the housing parts (14, 16).

CENTRIFUGAL COMPRESSOR

A centrifugal compressor is equipped with a housing including a suction passage which accommodates an impeller. The suction passage is provided with a first opening portion formed at a position facing the impeller, a second opening portion formed on an upstream side of the first opening portion, a circulation flow path which allows the first opening portion and the second opening portion to communicate with each other and extends in an annular shape around a rotational axis of the impeller, and a plurality of guide vanes disposed in the circulation flow path. The circulation flow path includes a first region in which a plurality of guide vanes is disposed at intervals in a circumferential direction, and a second region in which no guide vane is disposed. The second region extends over a wider range in the circumferential direction than the interval between the guide vanes in the first region. 18-. (canceled)9. A centrifugal compressor comprising a housing including an suction passage which accommodates an impeller ,wherein the suction passage is provided with a first opening portion formed at a position facing the impeller, a second opening portion formed on an upstream side of the first opening portion, a circulation flow path which allows the first opening portion and the second opening portion to communicate with each other and extends in an annular shape around a rotational axis of the impeller, and a plurality of guide vanes disposed in the circulation flow path,the circulation flow path includes a first region in which a plurality of guide vanes is disposed at intervals in a circumferential direction, and a second region in which no guide vane is disposed, and the second region extends over a wider range in the circumferential direction than the interval between the guide vanes in the first region.10. The centrifugal compressor according to claim 9 , wherein the housing comprises an annular scroll flow path formed on an outer circumference of the impeller ...

AIR FOIL BEARING

Disclosed herein is an air foil bearing capable of adjusting stiffness of single bumps by varying widths of the single bumps. Since the bumps have the same height in an initial stage, a wedging effect is implemented only when a load is applied thereto by an oil film. Therefore, the air foil bearing is advantageous in terms of height management thereof. In addition, it is possible to stably dampen shocks applied in the direction of rotation of a rotor, to improve a support capability, and to reduce shocks due to damping. Therefore, it is possible to enhance durability of the air foil bearing. 1. An air foil bearing for rotatably supporting a rotary shaft , comprising: 'wherein each of the bump foils comprises a plurality of foils extending from the coupled ends, and', 'a disc-shaped plate, a plurality of bump foils coupled to the plate, and a top foil disposed above each of the bump foils while one end of the top foil is coupled to the plate and the other end thereof is a free end,'}wherein a leading ridge (A) of each of the plurality of foils, which is adjacent to the free end, has a height different from another adjacent bump ridge.2. The air foil bearing according to claim 1 , wherein the bump foil is divided into first to fourth foils disposed radially from inside to outside by a plurality of slits.3. The air foil bearing according to claim 2 , wherein stiffness of the first to fourth foils is adjusted according to a width of each of the slits and a bump width of the bump foil.4. The air foil bearing according to claim 3 , wherein some of the first to fourth foils have different bump widths from one end thereof to the other end thereof.5. The air foil bearing according to claim 1 , wherein stiffness of the plurality of the foils increases from radially inside to outside.6. The air foil bearing according to claim 2 , wherein the plurality of slits have different shapes.7. An air foil bearing for rotatably supporting a rotary shaft claim 2 , comprising: 'wherein ...

CENTRIFUGAL BLOWER AND AIR CONDITIONER USING THE SAME

A centrifugal blower for an air conditioner may include a centrifugal fan rotatably coupled to a motor, and a bell mouth guiding air into the centrifugal fan. The centrifugal fan may include a hub fixed to a rotary shaft of the motor, a main plate provided at an outer circumferential surface of the hub, a shroud having a suction opening surrounding the rotary shaft, the shroud positioned opposite the main plate to define a main gas flow path, and a plurality of wings arranged along the circumferential direction of the suction opening between the main plate and the shroud. A rear axial end portion of the bell mouth may be inserted into the shroud through the suction opening so as to form a predetermined radial gap with the suction opening. The rear portion of the bell mouth may include a plurality of alternately formed protruding portions and recessed portions, with the protruding portions and the recessed portions inserted into the shroud. 1. A centrifugal blower , comprising:a motor; a hub fixed to a rotary shaft of the motor;', 'a main plate provided at an outer circumferential surface of the hub;', 'a shroud position opposite the main plate, upstream of the main plate, the shroud having a suction opening formed therein surrounding the rotary shaft; and', 'a plurality of wings arranged in a circumferential direction of the suction opening, in a space formed between the main plate and the shroud; and, 'a centrifugal fan rotatably coupled to the motor, the centrifugal fan comprising a rear portion inserted into the shroud through the suction opening such that the rear portion forms a predetermined radial gap with the suction opening;', 'a plurality of protrusions formed at a rear end of the rear portion; and', 'a plurality of recesses respectively formed between the plurality of protrusions,, 'a bell mouth positioned upstream of the centrifugal fan and guiding air into the centrifugal fan, wherein the bell compriseswherein the plurality of protrusions and the ...

LINEAR PUMP CONTROL

A demand-based load balancing function may be provided by one or more drive controllers that takes advantage of the affinity laws to linearize the control of the variable of interest (e.g., flow, pressure, etc.). Each drive controller may be set up by the user simply inputting a few values into the drive controller. Based on the inputs, the drive controllers may interpolate control points using an assumed linear relationship between the variable to be controlled (e.g., pressure) and the current driven to the pump. Feedback data from the system may be used to continually update the drive controllers so as to potentially allow them to better balance power usage to each pump. 1. A method for controlling an electrically-driven centrifugal device of a system , the system further having a measurement device configured to measure a physical characteristic , the method comprising:determining a minimum value of the physical characteristic and a maximum value of the physical characteristic;sending, by a drive controller, a changing amount of drive current to the centrifugal device, wherein a speed of the centrifugal device is controlled to attain a highest speed without exceeding the drive current;upon the measurement device indicating that the minimum value of the physical characteristic has been attained, storing a first value in a non-transitory computer-readable medium representing an amount of the drive current that is being provided to the centrifugal device;upon the measurement device indicating that the minimum value of the physical characteristic has been attained, storing a second value in the non-transitory computer-readable medium representing an amount of the drive current that is being provided to the centrifugal device;determining an amount of the drive current based on a set point value of the physical characteristic and based on linear interpolation using the first and second values; andsending the determined amount of drive current to the centrifugal device ...

MULTI-PIECE IMPELLER

An impeller includes a shell having a plurality of blades. The shell may also define a cavity. The impeller may further include a backplate that engages at least a portion of the shell. The backplate can include a post which can be coupled to the impeller through a fastener such as a threaded nut. The backplate can be thereafter clamped to the impeller shell. Seals can be provided in the impeller, such as in the backplate. The backplate and impeller shell can be piloted onto each other. In some forms splines can be used to secure the backplate to the impeller shell. 1. An apparatus comprising:a gas turbine engine turbomachinery impeller useful for changing a pressure of a working fluid that flows through the impeller during operation of a gas turbine engine, the impeller having:a bladed shell from which extends a plurality of centrifugal blades, the bladed shell having a first end and a second end, the first end having a smaller radius than the second end, the bladed shell having a shoulder that includes a load bearing surface;a backside plate located with the second end and having a protrusion extending toward the first end of the bladed shell and past the load bearing surface such that the load bearing surface is interposed between an end of the protrusion and the backside plate; anda fastener used to secure the protrusion of the backside plate to the bladed shell in which the fastener engages the protrusion and bears against the load bearing surface.2. The apparatus of claim 1 , wherein the shoulder is formed about an aperture and the protrusion is a threaded center member that extends through the aperture.3. The apparatus of claim 2 , which further includes a pilot feature formed in the bladed shell and a complementary pilot feature formed in the backside plate.4. The apparatus of claim 2 , which further includes a splined interface between the protrusion of the backside plate and the bladed shell.5. The apparatus of claim 1 , wherein the backside plate is a ...

CENTRIFUGAL PUMP APPARATUS

In this centrifugal blood pump apparatus, one permanent magnet is provided in one surface of an impeller, a second permanent magnet is provided in an inner wall of a blood chamber, a third permanent magnet is provided in the other surface of the impeller, and a fourth permanent magnet and a rotor for driving the impeller to rotate are provided, with an diaphragm being interposed. An amount of change in attractive force between the first permanent magnet and the second permanent magnet and an amount of change in attractive force between the third and fourth permanent magnets when the impeller is eccentric are made substantially equal to each other. Therefore, a levitation position of the impeller can always be maintained at a substantially central position in a housing. 1. (canceled)2. A centrifugal pump apparatus including a housing having first and second chambers partitioned from each other by a diaphragm , an impeller provided in said first chamber for delivering liquid by centrifugal force during rotation thereof , a drive unit provided in said second chamber for driving said impeller to rotate , and an arrangement of magnetic materials for controlling position of said impeller within said chamber during rotation thereof , comprising:a first magnetic element provided in one surface of said impeller;a second magnetic element provided in an inner wall of said first chamber facing the one surface of said impeller, to develop a first attractive force with the first magnetic element; anda third magnetic element provided in another surface of said impeller, to develop a second attractive force with said drive unit,wherein during rotation of said impeller, phase of voltages supplied to the drive unit are varied to adjust magnitude of the second attractive force and position of said impeller within said chamber.3. The centrifugal pump apparatus of claim 2 , wherein a first groove for hydrodynamic bearing is formed in one surface of said impeller or in the inner wall of ...

SEPARATED OPPOSED FLOW SINGLE COUPLING COMPRESSOR STAGE

A product usable with a turbocharger may include a compressor wheel having an inducer section and an exducer section. Air may be collected by the inducer section and expelled by the exducer section. A cover may define a diffuser and a collection volute. The diffuser may lead away from the exducer section to the collection volute. The cover may define a collection cavity opening to the collection volute through a port and extending in an axial direction. The cover may define an inlet passage around the inducer section and the cover may include a dividing wall separating the inlet passage from the collection cavity. 1. A product able to be used with a turbocharger comprising a compressor wheel having an inducer section and an exducer section wherein air is collected by the inducer section and expelled by the exducer section; a cover defining a diffuser and a collection volute , wherein the compressor wheel rotates about an axis that defines an axial direction parallel to the axis , with a radial direction defined as perpendicular to the axial direction , the diffuser leading away from the exducer section in the radial direction to the collection volute , the collection volute encircling the axis so that the air is channeled through the collection volute to encircle the axis , the cover defining a collection cavity opening to the collection volute through a port and extending in the axial direction so that the air is channeled through the port in the radial direction toward the axis and the air is channeled through the collection cavity in the axial direction , the cover defining an inlet passage around the inducer section and the cover including a dividing wall separating the inlet passage from the collection cavity wherein the collection cavity extends around the dividing wall and the inlet passage and the dividing wall extend through the collection cavity.2. The product according to wherein the compressor wheel rotates around an axis claim 1 , wherein the cover ...

CENTRIFUGAL COMPRESSOR

A centrifugal compressor having a casing that houses an impeller allowing rotation about a rotational axis C, a gas channel, a treatment hollow part provided inside the casing, a first channel open to the gas channel on the downstream side of the blade leading edge of the impeller, a second channel open to the gas channel at the upstream side of the blade leading edge, a guide vane that imparts a swirl component in an opposite rotational direction of the impeller to gas discharged from the second channel, a constricting part that constricts the gas channel, and a rectifying part that rectifies gas in a direction that minimizes the swirl component about the rotational axis C and also increases the component in the direction of the rotational axis C.

STATIC HUB TRANSITION DUCT

An engine includes a compressor having a first compressor, a second compressor, and a static hub transition duct. The first compressor includes a rotatable portion and a static portion. The second compressor is disposed downstream of the first compressor and includes an inlet and a rotatable portion. The static hub transition duct includes an inner wall and an outer wall. The inner wall is secured to the static portion of the first compressor, and the inner wall and outer wall define a space that fluidically couples the first compressor and the inlet of the second compressor. 1. A compressor of an engine , wherein the engine includes a shaft , comprising:a first compressor, wherein the first compressor includes a first rotatable portion and a static portion, wherein the first rotatable portion is mechanically secured to the shaft;a second compressor downstream of the first compressor, wherein the second compressor includes a second rotatable portion, wherein the second rotatable portion is mechanically secured to the shaft; anda transition duct having an inner wall and an outer wall, wherein the inner wall is secured to the static portion of the first compressor, and the inner wall and outer wall define a space that fluidically couples an exit of the first compressor and an inlet of the second compressor.2. The compressor of claim 1 , wherein the first compressor is an axial compressor and the second compressor is a centrifugal compressor.3. The compressor of claim 1 , wherein the inner wall of the transition duct is secured to a final stator of the axial compressor.4. The compressor of claim 3 , wherein the outer wall of the transition duct is secured to the final stator of the axial compressor.5. The compressor of claim 4 , wherein a casing surrounds the axial compressor.6. The compressor of claim 5 , wherein an extension portion of the casing forms at least a portion of the outer wall of the static transition duct.7. The compressor of claim 3 , further including ...

ROTOR AND CENTRIFUGAL COMPRESSOR INCLUDING THE SAME

A rotor includes: a hub; and a plurality of blades disposed on the hub. Each of the plurality of blades has a suction surface, a pressure surface, a leading edge, a trailing edge, a tip-side edge, and a hub-side edge. The suction surface has a first curved surface portion curved convexly toward the trailing edge such that the trailing edge is inclined to a pressure surface side in a first region which is a partial region, in a blade height direction of the blade, of a region connected to the trailing edge. 1. A rotor , comprising:a hub; anda plurality of blades disposed on the hub,wherein each of the plurality of blades has a suction surface, a pressure surface, a leading edge, a trailing edge, a tip-side edge, and a hub-side edge,wherein the suction surface has a first curved surface portion curved convexly toward the trailing edge such that the trailing edge is inclined to a pressure surface side in a first region which is a partial region, in a blade height direction of the blade, of a region connected to the trailing edge, andwherein the first curved surface portion is connected to the hub-side edge.2. (canceled)3. The rotor according to claim 1 ,wherein the first curved surface portion is formed in a region 80% or less of a blade height from the hub-side edge in a direction from the hub-side edge to the tip-side edge.4. The rotor according to claim 1 ,wherein the first curved surface portion is configured such that, in a cross-section perpendicular to a meridian plane of the blade, an angle of a tangent line of the first curved surface portion with respect to a chord line which is a straight line connecting the leading edge and the trailing edge increases toward the trailing edge.5. The rotor according to claim 1 ,wherein the pressure surface has a second curved surface portion curved convexly toward the trailing edge such that the trailing edge is inclined to a suction surface side in a second region which is a partial region, in the blade height direction of ...

Variable geometry diffuser ring

A compressor includes an impeller, a diffuser passage having a diffuser vane therein, and a variable geometry diffuser ring positioned between the impeller and the diffuser vane with respect to a flow of a refrigerant through the compressor. The compressor also includes an actuator configured to move the variable geometry diffuser ring in a direction transverse to the flow of the refrigerant, and between a plurality of ring positions including a fully retracted ring position in which the variable geometry diffuser ring does not block the flow of the refrigerant, and at least one protruded ring position in which the variable geometry diffuser ring adjusts an angle of the flow of the refrigerant upstream of the diffuser vane.

Power blower

A power blower includes a power blower main body and a blower tube member. The main body takes in air through an air intake portion by rotation of a blower fan rotated by a motor and discharges the air from an air discharge portion. The blower tube member has an opening on a base end side through which air discharged from the air discharge portion of the main body flows in, and an opening on a tip end side from which the air which has flowed in, is blown out. When a plane perpendicular to an axis of the blower tube member is in contact with the opening at the tip end side of the blower tube member, blown-air passages are formed on opposite sides of contact portions of the opening at the tip end side of the blower tube member and the plane.

CENTRIFUGAL PUMP AND METHOD OF PRODUCING CENTRIFUGAL PUMP

A centrifugal pump includes a metallic main body casing in which a rotating blade member is accommodated. The metallic main body casing includes an upper main body casing, a lower main body casing which is fixed to the upper main body casing, and a blade casing, which partitions an interior space formed by the upper main body casing and the lower main body casing so that a fluid introducing passage is formed at an upper portion, and a rotating accommodating space that accommodates the rotating blade member is formed at a lower portion. An edge of the blade casing is airtightly fixed to the upper main body casing or the lower main body casing. 1. A centrifugal pump comprising:a metallic main body casing in which a rotating blade member is accommodated, an upper main body casing,', 'a lower main body casing which is fixed to the upper main body casing, and, 'the metallic main body casing including;'}a blade casing, which partitions an interior space formed by the upper main body casing and the lower main body casing so thata fluid introducing passage is formed at an upper portion, anda rotating accommodating space that accommodates the rotating blade member is formed at a lower portion,wherein an edge of the blade casing is airtightly fixed to the upper main body casing or the lower main body casing.2. The centrifugal pump of claim 1 , wherein the edge of the blade casing is airtightly fixed by welding claim 1 , brazing or adhesion.3. The centrifugal pump of claim 2 , wherein on a vicinity of a fixing portion of at least one of the upper main body casing claim 2 , the blade casing claim 2 , and the lower main body casing claim 2 , a groove for flow stop which prevents the fixing material from flowing is formed.4. The centrifugal pump of claim 3 , wherein the groove for flow stop is formed by notching at least one of the upper main body casing claim 3 , the blade casing claim 3 , and the lower main body casing.5. The centrifugal pump of claim 3 , wherein the groove for ...

CENTRIFUGAL FAN WITH REDUCED MOTOR COOLING NOISE

A blower assembly suitable for use in a vehicle heating, ventilation, and air conditioning (HVAC) system includes a motor and a fan. The motor is configured to define an exit region where air that flows through the motor exits the motor. The centrifugal fan is configured to attach to a shaft of the motor. The fan defines a plurality of passageways configured to allow the air from the motor to pass through the fan. The passageways are configured to minimize noise caused by the air drawn through the motor. 1. A centrifugal fan suitable for use in a vehicle heating , ventilation , and air conditioning (HVAC) system , said fan comprising:a hub configured to define an opening suitable to receive a shaft of a motor;a plurality of fan blades arranged about a perimeter of the hub; anda plurality of passageways arranged about the hub between the opening and the perimeter to allow air to pass through the motor, wherein the passageways are configured to minimize noise caused by the air drawn through the motor.2. The fan in accordance with claim 1 , wherein each of the passageways is characterized as a slot that is angled relative to a radial line originated at the hub.3. The fan in accordance with claim 2 , wherein the slot is characterized as curved.4. The fan in accordance with claim 2 , wherein the passageways are arranged such that at least one passageway intersects any radial line originated at the hub.5. The fan in accordance with claim 2 , wherein adjacent passageways are arranged to overlap the radial line.6. The fan in accordance with claim 2 , wherein the fan includes a number of the passageways claim 2 , and the number is characterized as a prime number.7. A blower assembly suitable for use in a vehicle heating claim 2 , ventilation claim 2 , and air conditioning (HVAC) system claim 2 , said assembly comprising:a motor configured to define an exit region where air that flows through the motor exits the motor; anda centrifugal fan configured to attach to a shaft of ...

ELECTRICALLY HEATED BALANCE PISTON SEAL

A balance piston seal assembly for a balance piston of a compressor is provided. The balance piston seal assembly may include a balance piston seal configured to be disposed about the balance piston such that an inner radial surface of the balance piston seal and an outer radial surface of the balance piston define a radial clearance therebetween. The balance piston seal assembly may also include a plurality of heaters in thermal communication with the balance piston seal and configured to heat and thermally expand the balance piston seal and thereby increase a radial length of the radial clearance. 1. A balance piston seal assembly for a balance piston of a compressor , comprising:a balance piston seal configured to be disposed about the balance piston such that an inner radial surface of the balance piston seal and an outer radial surface of the balance piston define a radial clearance therebetween; anda plurality of heaters in thermal communication with the balance piston seal and configured to heat and thermally expand the balance piston seal and thereby increase a radial length of the radial clearance.2. The balance piston seal assembly of claim 1 , wherein the balance piston seal defines a plurality of bores at least partially extending therethrough from a first axial end surface toward a second axial end surface thereof.3. The balance piston seal assembly of claim 2 , wherein each heater of the plurality of heaters is disposed in a respective bore of the plurality of bores.4. The balance piston seal assembly of claim 3 , wherein the plurality of bores and the respective heaters disposed therein are circumferentially spaced about the balance piston seal at substantially equal intervals.5. The balance piston seal assembly of claim 3 , wherein the plurality of bores and the respective heaters disposed therein are circumferentially spaced about the balance piston seal at varying intervals.6. The balance piston seal assembly of claim 1 , wherein each heater of the ...

TURBOMACHINE ASSEMBLY

The present disclosure relates to a turbomachine assembly, which includes a shaft, a radial gas expander supported on the shaft between a first bearing and a second bearing, and a compressor supported on the shaft in overhung position adjacent to one or the other of the first and second bearings. The compressor includes a plurality of movable inlet nozzles and the radial gas expander includes a plurality of movable guide vanes. 1. A turbomachine assembly comprising:a shaft,a radial gas expander supported on the shaft between at least one first bearing and at least one second bearing, anda compressor supported on the shaft in an overhung position adjacent to at least one of said first or second bearings,said wherein the radial gas expander comprises a plurality of movable guide vanes.2. The turbomachine assembly according to claim 1 , wherein said compressor includes a plurality of movable inlet nozzles.3. The turbomachine assembly according to claim 1 , wherein the radial gas expander comprises at least two radial stages.4. The turbomachine assembly according to claim 3 , wherein at least one of the radial stages comprises a movable set of inlet guide vanes.5. The turbomachine assembly according to claim 4 , wherein each radial stage comprises a respective movable set of inlet guide vanes claim 4 , each set being actuated independently from the other set.6. The turbomachine assembly according to claim 1 , wherein at least a seal is provided on said shaft between the compressor and the radial gas expander.7. The turbomachine assembly according to claim 1 , wherein a first process gas is compressed in said compressor and a second operative gas is expanded in said radial gas expander.8. The turbomachine assembly according to claim 1 , wherein said radial gas expander is part of an organic Rankine cycle.9. The turbomachine assembly according to claim 1 , wherein said shaft operates at a variable speed.10. The turbomachine assembly according to claim 1 , wherein said ...

TWIN CENTRIFUGAL SINGLE SPOOL ENGINE

An auxiliary power unit may comprise a twin centrifugal compressor including a first blade. A turbine may be disposed aft of the twin centrifugal compressor. The turbine may include a second blade. The first blade comprises a first material and the second blade comprises a second material. The first material may the same as the second material. The twin centrifugal compressor may include forward centrifugal compressor and an aft centrifugal compressor disposed aft of the forward centrifugal compressor. 1. A twin centrifugal compressor for an auxiliary power unit , comprising:a first airflow path at an input of the twin centrifugal compressor; anda second airflow path and a third airflow path defined by the twin centrifugal compressor, wherein the second airflow path and the third airflow path are split from the first airflow path.2. The twin centrifugal compressor of claim 1 , further including a blade claim 1 , wherein the blade comprises silicon nitride.3. The twin centrifugal compressor of claim 1 , wherein the second airflow path and the third airflow path are co-axial within the twin centrifugal compressor.4. The twin centrifugal compressor of claim 1 , wherein a pressure of the second airflow path is substantially the same as a pressure of the third airflow path.5. The twin centrifugal compressor of claim 1 , wherein a pressure ratio of at least one of the second airflow path or the third airflow path to the first airflow path is 7:1 or greater.6. The twin centrifugal compressor of claim 1 , further comprising a manifold defining a fourth airflow path claim 1 , wherein the fourth airflow path is comprised of a mix of the second airflow path and the third airflow path.7. A compressor section of an auxiliary power unit claim 1 , comprising:a forward centrifugal compressor; andan aft centrifugal compressor disposed aft of the forward centrifugal compressor.8. The compressor section of claim 8 , wherein the forward centrifugal compressor further comprises a blade. ...

CENTRIFUGAL COMPRESSOR AND MAGNETIC BEARING BACKUP SYSTEM FOR CENTRIFUGAL COMPRESSOR

A centrifugal compressor includes a casing, an impeller, a motor, a diffuser, a magnetic bearing, and a magnetic bearing backup system including at least one dynamic gas bearing and at least one hydrostatic gas bearing. The impeller is attached to a shaft rotatable about a rotation axis. The motor is configured and arranged to rotate the shaft in order to rotate the impeller. The magnetic bearing rotatably supports the shaft. The magnetic bearing backup system is configured and arranged to support the shaft when the magnetic bearing stops operating. The at least one dynamic gas bearing and the at least one hydrostatic gas bearing of the magnetic bearing backup system are disposed radially inwardly relative to the magnetic bearing. 1. A centrifugal compressor used to compress refrigerant and adapted to be used in a chiller system including an evaporator , a condenser , and an expansion mechanism , the centrifugal compressor comprising: 'an impeller attached to a shaft rotatable about a rotation axis;', 'a casing having an inlet portion and an outlet portion;'}a motor configured and arranged to rotate the shaft in order to rotate the impeller;a diffuser disposed in the outlet portion downstream of the impeller;a magnetic bearing rotatably supporting the shaft; and at least one dynamic gas bearing, and', 'at least one hydrostatic gas bearing,', 'the at least one dynamic gas bearing and the at least one hydrostatic gas bearing being disposed radially inwardly relative to the magnetic bearing., 'a magnetic bearing backup system configured and arranged to support the shaft when the magnetic bearing stops operating, the magnetic bearing backup system including'}2. The centrifugal compressor according to claim 1 , whereinthe at least one dynamic gas bearing and the at least one hydrostatic gas bearing are disposed adjacent to both ends of the shaft of the compressor in an axial direction, respectively.3. The centrifugal compressor according to claim 1 , whereinthe at least ...

Gas Compressor and Method for Controlling Same

The purpose of the present invention is to provide a gas compressor that can achieve reduced fluctuation of discharge pressure during compressor body number control, and a method for controlling the gas compressor. This gas compressor includes a plurality of compressor units each having a compressor body, a motor for driving the compressor body, and an inverter for controlling a rotational speed of the motor, and a control device for controlling each of the inverters, in which discharge pipes of the compressor bodies are merged with one main discharge pipe and discharge pressure of the main discharge pipe is controlled through control of pressure of the respective discharge pipes by controlling, by means of the respective inverters, driving frequencies of the compressor bodies. The control device determines whether recovery through an increase in the driving frequency of the motor of each of the compressor bodies is possible, on the basis of the pressure value and a temporal changing amount of the discharge pressure of the main discharge pipe when the driving frequency of the motor of the compressor body is being increased but has not reached an upper limit frequency, and controls an increase of the number of the compressor bodies to be operated.

SUPERCHARGING DEVICE FOR A COMBUSTION ENGINE

A supercharging device (), having: a housing () which has a longitudinal axis (L); at least one housing inlet () which leads into the housing (); at least one housing outlet () which leads out of the housing (); at least one compressor wheel () which is arranged in a compressor chamber () and which is driven by a motor shaft () and which is arranged between the housing inlet () and the housing outlet () of the housing () as viewed in the flow direction, and at least one bypass duct () which is integrated in the housing () and which connects the housing inlet () to the housing outlet () so as to bypass the compressor chamber (). The bypass duct () has a self-adjusting valve (). The housing inlet () and the housing outlet () are formed as an axial inlet and an axial outlet respectively. 120. A supercharging device () , having{'b': '21', 'a housing () which has a longitudinal axis (L);'}{'b': 1', '21, 'at least one housing inlet () which leads into the housing ();'}{'b': 2', '21, 'at least one housing outlet () which leads out of the housing ();'}{'b': 5', '15', '16', '1', '2', '21, 'at least one compressor wheel () which is arranged in a compressor chamber () and which is driven by a motor shaft () and which is arranged between the housing inlet () and the housing outlet () of the housing () as viewed in the flow direction, and'}{'b': 17', '21', '1', '2', '15', '17', '22, 'at least one bypass duct () which is integrated in the housing () and which connects the housing inlet () to the housing outlet () so as to bypass the compressor chamber (), the bypass duct () having a valve (), wherein'}{'b': 1', '2, 'the housing inlet () and the housing outlet () are formed as an axial inlet and an axial outlet respectively.'}222811. The supercharging device as claimed in claim 1 , wherein the valve () has a valve body () which is guided movably along the longitudinal axis (L) and which is preloaded into a closed position by a spring ().38191821. The supercharging device as ...

A SCROLL FOR A TURBOMACHINE, TURBOMACHINE COMPRISING THE SCROLL, AND METHOD OF OPERATION

A scroll for use in conjunction with a fluid compressor is described. The scroll comprises a fluid inlet adapted to receive a fluid flow and a fluid outlet adapted to discharge the fluid flow. The scroll further comprises a scroll-shaped wall defining an inner flow volume. At least one blade is provided in the inner flow volume of the scroll. The blade is configured and arranged for correcting a direction of the flow of fluid in the flow volume when the scroll is operating in off-design conditions. 1. A scroll for use in conjunction with a fluid compressor , the scroll comprising:a fluid inlet adapted to receive a flow of fluid;a fluid outlet adapted to discharge the flow of fluid;a scroll-shaped wall defining an inner flow volume; andat least one blade in the inner flow volume protruding from the scroll-shaped wall for correcting a direction of the flow of fluid in the inner flow volume, when the scroll is operating in off-design conditions.2. The scroll of claim 1 , wherein a plurality of blades are arranged in the inner flow volume of the scroll claim 1 , along at least a portion of a circular development thereof.3. The scroll of claim 2 , wherein the blades are arranged according to a constant pitch around the scroll.4. The scroll of claim 1 , wherein each blade is oriented and configured so as to at least reduce a variation of a ratio between axial component and tangential component of a fluid velocity at variable operating conditions.5. The scroll of claim 1 , wherein each blade extends along the wall from a leading edge claim 1 , located proximate the fluid inlet claim 1 , to a trailing edge.6. The scroll of claim 1 , wherein each blade has an inclination with respect to an axial direction.7. The scroll of claim 1 , wherein each blade forms an angle with respect to an axial direction claim 1 , the angle being variable from the leading edge to the trailing edge of the blade.8. The scroll of claim 7 , wherein the angle between the blade and the axial direction ...

COOLING UNIT OF AIR COMPRESSOR FOR FUEL CELL VEHICLE

An air compressor for a fuel cell vehicle includes a volute housing, an impeller mounted to the volute housing, and a motor driving the impeller and cooling the motor and bearings that support a rotation shaft of the motor using air at an outlet side of the impeller. The air compressor has a cooling unit including: a coolant channel provided in plural along a radial direction in a motor housing that is coupled to the volute housing and through which a coolant flows; and a cooled air channel formed between coolant channels of the motor housing and through which the air flows. 1. A cooling unit of an air compressor that includes a volute housing , an impeller mounted to the volute housing , and a motor driving the impeller and cools the motor and bearings that support a rotation shaft of the motor using air at an outlet side of the impeller , the cooling unit comprising:a plurality of coolant channels arranged along a radial direction in a motor housing that is coupled to the volute housing and through which coolant flows; anda cooled air channel formed between the coolant channels of the motor housing and through which the air flows.2. The cooling unit of the air compressor of claim 1 , wherein the air flowing along the cooled air channel is cooled using the coolant flowing along the coolant channels claim 1 , and the motor and the bearings are cooled using the cooled air.3. The cooling unit of claim 1 , wherein the coolant channel comprises at least one coolant path formed in a forward/backward direction in the motor housing.4. The cooling unit of claim 1 , wherein the cooled air channel comprises:a first connection path formed in a front side of the motor housing coupled with the volute housing, and is connected with a rear side of the impeller;a first path connected with the first connection path and formed in from the front side to the rear side of the motor housing;a second path connected with a rear end of the first path and formed from a rear side to the a ...

SYSTEM AND METHOD FOR DETECTING STALL OR SURGE IN RADIAL COMPRESSORS4

A system and method are provided for detecting an impending stall or surge in a radial compressor. The system and method may include a plurality of detection devices configured to detect a transition of a low momentum zone of a gas flow through the diffuser from a first position adjacent a shroud wall of the diffuser to a second position adjacent a hub wall of the diffuser. The system and method may also include a control system electrically coupled to the plurality of detection devices and configured to receive a plurality of information signals. Each information signal may be transmitted by a respective one of the plurality of detection devices and may correlate to a location of the low momentum zone. The control system may be configured to process the plurality of information signals and detect the impending stall or surge based on the location of the low momentum zone. 1. A detection system for detecting an impending stall or surge in a radial compressor , comprising:a plurality of detection devices coupled to the radial compressor, at least a portion of each detection device disposed in a diffuser channel of a diffuser of the radial compressor, the plurality of detection devices configured to detect a transition of a low momentum zone of a gas flow through the diffuser from a first position adjacent a shroud wall of the diffuser to a second position adjacent a hub wall of the diffuser; anda control system electrically coupled to the plurality of detection devices and configured to receive a plurality of information signals, each information signal being transmitted by a respective one of the plurality of detection devices and correlating to a location of the low momentum zone, the control system further being configured to process the plurality of information signals and detect the impending stall or surge based on the location of the low momentum zone.2. The system of claim 1 , wherein at least one detection device of the plurality of detection devices ...

HOLLOW ELEMENT MANUFACTURING METHOD AND ROTARY MACHINE MANUFACTURING METHOD

A method of manufacturing a hollow element which has an internal space and of which the internal space is cryogenically used, the method comprising a base material forming step of forming a base material which has a space to serve as the internal space; a filling step of filling the internal space of the formed base material with fluid having a temperature equal to or lower than a temperature at which the base material is subjected to solid-phase transformation and causing the base material to be subjected to the solid-phase transformation; and a finishing step of finishing the base material after the base material is subjected to phase transformation. 1. A method of manufacturing a hollow element which has an internal space and of which the internal space is cryogenically used , the method comprising:a base material forming step of forming a base material which has a space to serve as the internal space;a filling step of filling the internal space of the formed base material with fluid having a temperature equal to or lower than a temperature at which the base material is subjected to solid-phase transformation and causing the base material to be subjected to the solid-phase transformation; anda finishing step of finishing the base material after the base material is subjected to phase transformation.2. The method of manufacturing a hollow element according to claim 1 ,wherein the hollow element is assembled with a plurality of members, a temporary assembling step of temporarily assembling each of the base materials respectively corresponding to the plurality of members which are formed through the base material forming step, and', 'wherein the filling step is carried out with respect to the temporarily assembled base material., 'wherein the method further comprises3. The method of manufacturing a hollow element according to claim 1 ,wherein in the filling step, a core is disposed in the internal space in a state of being separated from a surface defining the ...

BEARINGS FOR A TURBOCHARGER

A turbocharger includes a housing, a shaft received therein, a turbine wheel affixed to the shaft at or adjacent to a first end thereof, a compressor wheel affixed to the shaft at or adjacent to a second, opposite end thereof, a first bearing received on the shaft between the turbine wheel and the compressor wheel, and a second bearing received on the shaft between the first bearing and the compressor wheel. One of the first and second bearings is floating relative to the shaft and affixed to the housing, and the other is floating relative to the shaft and also floating relative to the housing. 1. A turbocharger , comprising:a turbocharger housing,a turbocharger shaft received within the turbocharger housing,a turbine wheel affixed to the turbocharger shaft at or adjacent to a first end thereof,a compressor wheel affixed to the turbocharger shaft at or adjacent to a second end thereof, the second end opposite the first end,a first bearing received on the turbocharger shaft between the turbine wheel and the compressor wheel, anda second bearing received on the turbocharger shaft between the first bearing and the compressor wheel,wherein one of the first and second bearings is floating relative to the turbocharger shaft and affixed to the turbocharger housing, and the other of the first and second bearings is floating relative to the turbocharger shaft and floating relative to the turbocharger housing.2. The turbocharger of claim 1 , wherein the turbocharger housing defines therein a first boss and a second boss claim 1 , the first bearing disposed in the first boss and the second bearing disposed in the second boss claim 1 , the one of the first and second bearings affixed to the housing being prevented from rotating relative to the respective one of the first and second bosses.3. The turbocharger of claim 2 , wherein the turbocharger housing defines a turbine housing portion defining the first boss therein and a compressor housing portion coupled to the turbine ...

ROTARY MACHINE INCLUDING ACTIVE MAGNETIC BEARING

A controller for a rotary machine includes a processor and a memory coupled to the processor. The memory is configured to store operating modes of the controller. The operating modes include a normal operating mode and a fault tolerant operating mode. The controller is configured to receive a signal from at least one sensor and determine an operating state of the rotary machine based on the signal. The controller is also configured to switch the operating modes based on the determined operating state of the rotary machine and regulate at least one electromagnetic bearing and at least one flow control device. The controller is further configured to adjust at least one of the at least one electromagnetic bearing and the at least one flow control device in the fault tolerant operating mode. 1. A controller for a rotary machine , said controller coupled to at least one electromagnetic bearing , at least one sensor , and at least one flow control device , said controller comprising:a processor; and receive a signal from the at least one sensor and determine an operating state of the rotary machine based on the signal;', 'switch the operating modes based on the determined operating state of the rotary machine;', 'regulate the at least one electromagnetic bearing and the at least one flow control device; and', 'adjust at least one of the at least one electromagnetic bearing and the at least one flow control device in the fault tolerant operating mode., 'a memory coupled to said processor, said memory configured to store operating modes of said controller, the operating modes including a normal operating mode and a fault tolerant operating mode, wherein said controller is configured to2. The controller in accordance with claim 1 , wherein said controller is further configured to regulate the at least one electromagnetic bearing in the normal operating mode based on a first set of parameters claim 1 , and said controller is further configured to regulate the at least one ...

DIFFUSER, CENTRIFUGAL COMPRESSION POWER SYSTEM AND BLADELESS FAN

A diffuser includes a lower element and an upper element. The upper element is fixed on the lower element, and the upper element and the lower element are formed separately. The lower element includes a lower inner wall and a lower outer wall, and the upper element includes an upper inner wall and an upper outer wall. The upper inner wall is connected to the lower inner wall to form an internal air-guiding surface, the upper outer wall is connected to the lower outer wall to form an external air-guiding surface, and the internal air-guiding surface is disposed opposite to the external air-guiding surface to define an air-guiding channel for air flow diffusion. The upper element further includes an upper air-guiding wing for connecting the upper inner wall and the upper outer wall, and the lower element further includes a lower air-guiding wing for connecting the lower inner wall and the lower outer wall. 1. A diffuser , comprising:a lower element; andan upper element fixed on the lower element,wherein the upper element and the lower element are formed separately; the lower element comprises a lower inner wall and a lower outer wall, and the upper element comprises an upper inner wall and an upper outer wall; the upper inner wall is connected to the lower inner wall to form an internal air-guiding surface; the upper outer wall is connected to the lower outer wall to form an external air-guiding surface; the internal air-guiding surface is disposed opposite to the external air-guiding surface, and an air-guiding channel configured to diffuse an airflow is defined between the internal air-guiding surface and the external air-guiding surface; the upper element further comprises an upper air-guiding wing for connecting the upper inner wall and the upper outer wall, and the lower element further comprising a lower air-guiding wing for connecting the lower inner wall and the lower outer wall; the upper air-guiding wing is connected to the lower air-guiding wing to form an ...

SIDE-CHANNEL COMPRESSOR FOR A FUEL CELL SYSTEM FOR CONVEYING AND/OR COMPRESSING A GASEOUS MEDIUM

The invention relates to a side-channel compressor () for a fuel cell system () for conveying and/or compressing a gaseous medium, in particular hydrogen, comprising a housing (); a compressor chamber () which is situated in the housing () and which has at least one encircling side channel (); a compressor impeller () which is situated in the housing () and which is arranged so as to be rotatable about a rotational axis (), wherein the compressor impeller () has conveying cells () arranged on the impeller circumference in the region of the compressor chamber (); and in each case one gas inlet opening () formed on the housing () and one gas outlet opening (), which are fluidically connected together via the compressor chamber (), in particular the at least one side channel (). The housing () has a respective first and second end face () radially to the rotational axis (), each end face facing the compressor impeller (), and a first and second functionally relevant gap dimension () is formed in the region of each gap surface. According to the invention, the compressor impeller () is designed in multiple parts and has a first impeller shell () and a second impeller shell (). The impeller shells () are arranged adjacently to each other axially to the rotational axis () in particular, and each impeller shell is at least partly made of a plastic. 1137. A side-channel compressor () for a fuel cell system () for conveying and/or compressing a gaseous medium , the side-channel compressor comprising{'b': '3', 'a housing (),'}{'b': 30', '3', '19', '21, 'a compressor chamber (), which is situated in the housing () and which has at least one encircling side channel (, ),'}{'b': 2', '3', '4', '2', '5', '30, 'a compressor impeller (), which is situated in the housing () and which is arranged so as to be rotatable about an axis of rotation (), wherein the compressor impeller () has conveyor cells () arranged on a impeller circumference in a region of the compressor chamber (), and ...

LUBRICATION-FREE CENTRIFUGAL COMPRESSOR

A gas compression compact device comprised of: a) one or more centrifugal compressors; and b) a high speed axial flow permanent magnet synchronous electric motor. The electric motor and the compressor are directly coupled on a single axis and supported by passive magnetic and electrodynamic bearings, free of lubrication. The equipment does not use mechanic seals since the rotor is placed inside the pressure containment of the gas. The equipment does not require auxiliary systems for cooling, filtration, separation or feeding of lubricant fluids. 112522. A compact gas compressing device comprising a rotating motor-impeller assembly formed by one or more centrifugal compressor impellers () and an electric motor () , in which the one or more compressor impellers are coupled directly and on a single axis () to the electric motor () , wherein said electric motor () is a synchronous , axial flow and permanent magnet motor.25675896789. The compact gas compression device in accordance with claim 1 , wherein the axis () of the rotating motor-impeller assembly is supported by two or more magnetic radial bearings ( claim 1 , ) to fix the radial position of the axis () claim 1 , and one or more passive electrodynamic thrust bearings ( claim 1 , ) to fix the axial position of the axis claim 1 , and wherein the magnetic radial bearings ( claim 1 , ) and the one or more electrodynamic thrust bearings ( claim 1 , ) operate totally free of lubricants and of auxiliary control systems.32435410312. The compact gas compression device in accordance with claim 1 , wherein each one of said one or more electric motors () are formed by one or more stator assemblies () located between one or more rotating assemblies () which are fixed to the axis (); and wherein the stator assemblies () contain one or more coils () and the rotating assemblies () contain one or more pairs of permanent magnets ().4411. The compact gas compression device in accordance with claim 4 , wherein the one or more ...

VANELESS SUPERSONIC DIFFUSER FOR COMPRESSOR

A mixed-flow compressor includes an impeller attached to a shaft and rotatable about a shaft axis. A vaneless diffuser is located axially downstream of the impeller and has a converging portion and a diverging portion. A vaned diffuser is located axially downstream of the vaneless diffuser. 1. A mixed-flow compressor comprising:an impeller attached to a shaft and rotatable about a shaft axis;a vaneless diffuser located axially downstream of the impeller having a converging portion and a diverging portion; anda vaned diffuser located axially downstream of the vaneless diffuser.2. The mixed-flow compressor of claim 1 , wherein the converging portion is located axially upstream of the diverging portion.3. The mixed-flow compressor of claim 2 , wherein the converging portion is connected to the diverging portion with an axially extending mid-portion having a constant cross-sectional area.4. The mixed-flow compressor of claim 1 , wherein the vaneless diffuser includes an inner wall and an outer wall defining a fluid flow path there between.5. The mixed-flow compressor of claim 4 , wherein at least one of the inner wall and the outer wall are rotatable relative to the shaft axis.6. The mixed-flow compressor of claim 4 , wherein both the inner wall and the outer wall are rotatable about the shaft axis.7. The mixed-flow compressor of claim 6 , wherein the inner wall is supported on at least one inner wall bearings and the outer wall is supported on at least one outer wall bearings.8. The mixed-flow compressor of claim 1 , wherein the vaned diffuser includes a plurality of vanes circumferentially spaced from each other around the shaft axis.9. The mixed-flow compressor of claim 1 , wherein the converging portion extends up to 75% of an axial length of the vaneless diffuser.10. The mixed-flow compressor of claim 9 , wherein the converging portion includes up to a 50% reduction in cross-sectional area between an inlet to the converging portion and an outlet of the converging ...

Electromechanical actuators for refrigerant flow control

An actuator assembly includes a first actuator, a second actuator, and a moving piece that is disposed between the first actuator and the second actuator. The moving piece is positionable to close a gap in the compressor.

TURBO-COMPRESSOR

A turbo-compressor includes a variable vane that adjusts the flow rate of a fluid, a drive shaft that is connected to the variable vane and is rotated to drive the variable vane a motor that rotationally drives the drive shaft and a coupling that couples the drive shaft with an output shaft of the motor Between the drive shaft and output shaft and the coupling a vibration isolation means is arranged to connect the drive shaft and output shaft to each other so that they rotate together and allow the drive shaft and output shaft to move in a vibration direction. 1. A turbo-compressor comprising a variable vane adjusting the flow rate of a fluid , a drive shaft being connected to the variable vane and rotated to drive the variable vane , a motor rotationally driving the drive shaft , and a coupling that couples the drive shaft with an output shaft of the motor , whereina vibration isolation means is arranged between the drive shaft and output shaft and the coupling, connects the drive shaft and output shaft to each other so that they rotate together and allows the drive shaft and output shaft to move in a vibration direction.2. The turbo-compressor according to claim 1 , wherein:the vibration isolation means includes two grooves and two projections arranged on opposing faces of the coupling and the drive shaft and output shaft, respectively;the two grooves intersect each other on a plane orthogonal to an axial direction of the drive shaft; andthe two projections engage with the two grooves, respectively.3. The turbo-compressor according to claim 2 , whereinan end of the projection that engages with the groove is formed as a curved face. This application is a Continuation of PCT Application No. PCT/JP2012/067335, filed on Jul. 6, 2012 and claims the benefit of priority under 35 U.S.C. 119(a) to Japanese Patent Application No. 2011-154644 filed on Jul. 13, 2011 whose disclosed contents are cited herein.The present invention relates to a turbo-compressor capable of ...

Centrifugal compressor and turbocharger

A centrifugal compressor includes an impeller, a compressor inlet pipe for guiding air to the impeller, a scroll passage disposed on an outer peripheral side of the impeller, and a bypass passage connecting the compressor inlet pipe and the scroll passage and bypassing the impeller. In a cross-section perpendicular to an axis of the compressor inlet pipe, when A 1 is a connection portion on a downstream side in a rotational direction of the impeller of connection portions between an inner wall surface of the compressor inlet pipe and an inner wall surface of the bypass passage, C is a virtual circle constituting the inner wall surface of the compressor inlet pipe, and L 1 is a tangent line of the virtual circle C at the connection portion A 1, the inner wall surface of the bypass passage is formed from the connection portion A 1 along the tangent line L 1.

FAN

A fan includes a cylindrical impeller, and a casing including a first side plate, a second side plate and an outer plate. In each of the first side plate and the second side plate, parts respectively corresponding to starting end and terminal end sides of the spiral ventilation passage, and a section corresponding to a connecting ventilation passage extending from a terminal end portion of the spiral ventilation passage in a rotating direction of the impeller and connected to a starting end portion of the spiral ventilation passage form a smooth surface by: connecting flat planes having a certain height; connecting inclined planes having a height gradually changed; or connecting a flat plane and an inclined plane; and a dimension of the spiral ventilation passage in the rotation axis direction of the impeller gradually decreases from the starting end portion and the terminal end portion to a predetermined position. 1. A fan comprising:a cylindrical impeller; anda casing configured to accommodate the impeller, and including a spiral ventilation passage formed radially outside the impeller, a first side plate provided on a first end side of a rotation axis direction of the impeller;', 'a second side plate provided on a second end side of the rotation axis direction of the impeller, and including an air suction port; and', 'an outer plate provided radially outside the impeller, wherein:, 'the casing includingin each of the first side plate and the second side plate, parts respectively corresponding to a starting end side and a terminal end side of the spiral ventilation passage, and a section corresponding to a connecting ventilation passage which extends from a terminal end portion of the spiral ventilation passage in a rotating direction of the impeller and is connected to a starting end portion of the spiral ventilation passage form a smooth surface by at least one of: connecting flat planes having a certain height; connecting inclined planes having a height ...

EXHAUST-GAS TURBOCHARGER

An exhaust-gas turbocharger () having a compressor () which has a compressor housing (); a turbine () which has a turbine housing (); and a compressor-side and/or turbine-side charge pressure regulating device () which has a shut-off element () which opens or closes a flow opening (). The shut-off element () is in the form of a slide which is mounted on a guide () so as to be longitudinally displaceable along a longitudinal central line (LM) of the guide (), and the flow opening () is arranged at least substantially at a right angle (α) with respect to the longitudinal central line (LM) of the guide (). 11. An exhaust-gas turbocharger () , having{'b': 2', '3, 'a compressor () which has a compressor housing ();'}{'b': 4', '5, 'a turbine () which has a turbine housing (); and'}{'b': 6', '7', '9, 'a compressor-side and/or turbine-side charge pressure regulating device () which has a shut-off element () which opens or closes a flow opening (), wherein'}{'b': 7', '8', '8, 'sub': '8', 'the shut-off element () is in the form of a slide which is mounted on a guide () so as to be longitudinally displaceable along a longitudinal central line (LM) of the guide (), and'}{'b': 9', '8, 'sub': '8', 'the flow opening () is arranged at least substantially at a right angle (a) with respect to the longitudinal central line (LM) of the guide ().'}271011. The exhaust-gas turbocharger as claimed in claim 1 , wherein the slide () has a slide head () which is connected to a slide rod ().3101312. The exhaust-gas turbocharger as claimed in claim 2 , wherein the slide head () is pot-shaped with a cylindrical guide and seal wall () that points into an interior space ().41014151615. The exhaust-gas turbocharger as claimed in claim 3 , wherein the slide head () is mounted on a cylindrical guide spigot () which has a cylindrical outer wall () and a face wall () that adjoins the outer wall ().5151013. The exhaust-gas turbocharger as claimed in claim 4 , wherein the outer wall () guides the slide ...

THERMAL RETRACTING ACTUATOR

A thermal actuator for a rotating shaft shutdown seal that has a piston with a portion of its axial length enclosed within a chamber shell with a material that expands upon a rise in temperature. The portion of the actual length of the piston within the chamber has at least two different diameters with the larger diameter leading in the direction of travel of the piston. Upon a rise in temperature, expansion of the material surrounding the piston within the chamber creates a force on the piston in the desired direction of travel. Below a preselected temperature the piston is positively locked with a passive release when the preselected temperature is reached. 1. An actuator comprising:a cylinder having an axial dimension;a piston axially movable within the cylinder with the cylinder having an upper and lower end which is sealed around the piston, the piston having one end connectable to an operator;a cavity occupying a space within the cylinder between the upper and lower ends and which space at least partially surrounds a portion of the piston, an axial dimension of the piston extending through the space within the cavity when the piston is in a first position of its travel, the axial dimension of the piston having at least two separate diameters with a largest of the diameters leading a smaller of the diameters in a direction of travel of the piston to move the piston to a second position, the two diameters occupying at least a portion of the space when the piston is in the first position;a material occupying at least a portion of the space within the cavity, the material expanding upon an increase in temperature to exert a force on the piston that causes the piston to move to the second position when the material rises above a preselected temperature; andwherein the piston extends axially through the material occupying a portion of the space within the cavity.2. The actuator of including a safety lock configured to prevent the piston from moving from the first ...

IMPELLER, ROTATING MACHINE, AND METHOD FOR ASSEMBLING ROTATING MACHINE

An impeller is equipped with: a disk part, having a cylindrical part into which a rotary shaft that rotates around an axis line is inserted, with a portion of the cylindrical part in the axis line direction of the rotary shaft being fixed to the rotary shaft as a grip part, and a disk main body part extending from the cylindrical part outward in the radial direction of the rotary shaft a blade part protruding from the disk main body part toward a side in a first direction in the axis line direction; a reinforcing member attachment part formed on the cylindrical part closer to a side in a second direction in the axis line direction than the disk main body part; and a reinforcing member formed of material having a higher specific strength than the disk part, and attached so as to cover the reinforcing member attachment part from the outside. 1. An impeller , comprising:a disk part which includes a cylindrical part into which a rotary shaft rotating around an axis line is inserted and in which a portion in the axis line direction of the rotary shaft is fixed to the rotary shaft as a grip part, and a disk main body part which extends from the cylindrical part outward in a radial direction of the rotary shaft;a blade which protrudes from the disk main body part toward a side in a first direction in the axis line direction;a reinforcing member attachment part which is formed on the cylindrical part closer to a side in a second direction in the axis line direction than the disk main body part; anda reinforcing member which is formed of a material having a higher specific strength than the disk part, and is attached so as to cover the reinforcing member attachment part from the outside.2. The impeller according to claim 1 ,wherein the reinforcing member attachment part includes:an attachment part main body which is integrally formed with the cylindrical part; anda ring member which is formed of a material having a linear expansion coefficient equal to or greater than the ...

ELECTRIC COMPRESSOR

An electric compressor for compressing a gas, and in particular, an electric compressor for a motor vehicle comprising a compressor wheel, an electric motor, wherein the compressor wheel can be driven by the electric motor, a control unit, wherein the electric motor can be controlled by the control unit, and a housing having at least one open end for receiving the control unit. The housing has at least one recess on the inner circumference at the open end that is designed so as to be open in the direction of the housing interior. The control unit can be inserted into the housing in such a way that it closes the open end of the housing and the recess on the inner circumference. 1. An electric compressor for compressing a gas and configured for use in a motor vehicle , the electric compressor comprising:a compressor wheel;an electric motor, wherein the compressor wheel can be driven by means of the electric motor;a control unit, wherein the electric motor can be controlled by means of the control unit; anda housing, wherein the housing has at least one open end for receiving the control unit, wherein that the housing has at least one recess on the inner circumference at the open end, and wherein the recess is designed so as to be open in the direction of the housing interior such that the control unit can be inserted into the housing in such a way that it closes the open end of the housing and the recess on the inner circumference.2. The electric compressor according to claim 1 , wherein there can be a flow of a cooling fluid through the recess on the inner circumference of the housing.3. The electric compressor according to claim 1 , wherein the control unit is at least partially surrounded by a jacket claim 1 , wherein the jacket is composed of a material of good thermal conductivity.4. The electric compressor according to claim 1 , wherein the housing is of substantially cylindrical design on its housing inner side claim 1 , in the region of the open end.5. The ...

COMPRESSOR SYSTEM, AND ATTACHMENT STRUCTURE FOR CENTRIFUGAL SEPARATOR

Provided is a compressor system including: a first impeller of a compressor for pressure-feeding a fluid radially outward after the fluid has flowed in from an axial direction; a centrifugal separator for feeding externally supplied fluid out toward the first impeller while causing the fluid to swirl; and a casing for sectioning off an inflow channel which guides the fluid from the exterior to the centrifugal separator, a first accommodation space which is disposed downstream from the inflow channel and which accommodates the centrifugal separator, a second accommodation space which is connected to the downstream side of the first accommodation space and which accommodates the first impeller, and a foreign substance expulsion channel which expels foreign substances guided to the outer peripheral side by the centrifugal separator. 1. A compressor system , comprising:a drive part;an impeller for pressure-feeding a fluid radially outward after the fluid has flowed in from an axial direction by rotating around the shaft line via the drive part;a centrifugal separator provided on the upstream side of the impeller and formed to be larger than the outer diameter of the inlet of the impeller, which feeds the externally supplied fluid out toward the impeller while causing the fluid to swirl by rotating around the shaft line via the drive part: anda casing for sectioning off an inflow channel which guides the fluid from the exterior to the centrifugal separator, a first accommodation space which is disposed downstream from the inflow channel and which accommodates the centrifugal separator, a second accommodation space which is connected to the downstream side of the first accommodation space and which accommodates the impeller, and a foreign substance expulsion channel which is connected downstream of the first accommodation space in the axial direction and expels foreign substances guided to the outer peripheral side by the centrifugal separator.2. The compressor system ...

CENTRIFUGAL COMPRESSOR

In a centrifugal compressor including an impeller () having rotor blades (), a shroud () surrounding the impeller, and a diffuser () having stator vanes (), the shroud () includes a plurality of openings () opening toward the impeller () in a part thereof adjacent to an impeller outlet portion (B), and a communication passage () communicating the openings () with one another, the openings including first openings (A) that are arranged at a same interval as the stator vanes, and second openings (B) arranged intermediately between the adjacent first openings. 1. A centrifugal compressor , comprising:an impeller including a plurality of rotor blades arranged at a prescribed interval;a shroud provided so as to oppose the impeller to define an annular impeller inlet portion opening in an axial direction and an annular impeller outlet portion opening in a radially outward direction in cooperation with the impeller;a diffuser disposed radially outward of the impeller and having an annular diffuser inlet portion which opens radially inward and opposes the impeller outlet portion; anda plurality of stator vanes provided in the diffuser inlet portion at a prescribed interval in a circumferential direction,wherein the shroud includes a plurality of openings opening toward the impeller in a part thereof adjacent to the impeller outlet portion, and a communication passage communicating the openings with one another, the openings including first openings that are arranged at a same interval as the stator vanes, and second openings arranged intermediately between the adjacent first openings.2. The centrifugal compressor according to claim 1 , wherein the first openings and the second openings are arranged along a circle concentric to the impeller.3. The centrifugal compressor according to claim 1 , wherein the second openings are each positioned between a ¼ point and a ¾ point in the interval between the corresponding adjoining pair of the first openings.4. The centrifugal ...

METHODS AND SYSTEMS FOR CONTROLLING TURBOCOMPRESSORS

A method for regulating a turbocompressor to prevent surge, is described. The method comprises the following steps: providing at least one surge limit line of turbocompressor; continuously determining an actual value of a corrected speed of the turbocompressor; continuously determining at least a maximum admissible pressure ratio on the surge limit line, corresponding to the actual value of the corrected speed; continuously determining an actual pressure ratio; acting upon an antisurge arrangement, if the actual pressure ratio is equal to or higher than the maximum admissible pressure ratio. 1. A method for regulating a turbocompressor to prevent surge , comprising the following steps:providing at least one surge limit line and/or at least one choke line of said turbocompressor;determining continuously an operating point of the compressor measuring a processing gas temperature at a compressor inlet, the rotary speed of the compressor, a delivery pressure value and a suction pressure value;continuously determining an actual value of a corrected speed of the turbocompressor, the corrected speed being proportional to a ratio of the rotary speed to a square root of the processing gas temperature;continuously determining at least a maximum admissible pressure ratio on said surge limit line and/or at least a minimum admissible pressure ratio on said choke line, corresponding to the actual value of the corrected speed;continuously determining an actual pressure ratio, equal to a ratio between the delivery pressure value and the suction pressure value; andacting upon an antisurge arrangement to recirculate a fraction of a the compressed gas in the compressor through a suction line, if the actual pressure ratio is equal to or higher than the maximum admissible pressure ratio or equal to or lower than the minimum admissible pressure ratio.2. The method of claim 1 , further comprising the step of calculating a surge parameter defined as a ratio ofthe maximum admissible ...

VARIABLE-NOZZLE TURBINE WITH MEANS FOR RADIAL LOCATING OF VARIABLE-NOZZLE CARTRIDGE

A turbocharger having a variable-nozzle turbine formed by pivotable vanes supported by a nozzle ring includes an elastically deformable locator disposed between a radially outwardly facing surface of the center housing and an opposing surface of the nozzle ring. In one embodiment the locator is a metallic ring having a radially undulating waveform shape that repeats a plurality of times about a circumference of the locator. In another embodiment the locator is a metallic ring having a C-shaped cross-section in a radial-axial plane. In still another embodiment the locator is a metallic ring having an S-shaped cross-section in a radial-axial plane. In a further embodiment the locator is a plurality of circumferentially spaced, radial locator pins affixed in the center housing and received in radial slots formed in the nozzle ring, the pins restraining the nozzle ring circumferentially and axially but allowing thermal expansion of the nozzle ring. 1. A turbocharger having a variable-nozzle turbine , comprising:a turbine comprising a turbine housing and a turbine wheel mounted in the turbine housing and connected to a rotatable shaft for rotation therewith, the turbine housing defining a chamber surrounding the turbine wheel for receiving exhaust gas, and an axially extending bore through which exhaust gas is discharged after passing through the turbine wheel;a nozzle leading from the chamber generally radially inwardly to the turbine wheel;a compressor comprising a compressor housing and a compressor wheel mounted in the compressor housing and connected to the rotatable shaft for rotation therewith;a center housing connected between the compressor housing and the turbine housing and having a nose portion adjacent the turbine wheel defining a generally radially outwardly facing first surface and a second surface that faces generally axially toward the turbine wheel;a generally annular nozzle ring having a first face comprising one wall of the nozzle and axially spaced ...

PASSIVE INLET-ADJUSTMENT MECHANISMS FOR COMPRESSOR, AND TURBOCHARGER HAVING SAME

A centrifugal compressor for a turbocharger includes a passive inlet-adjustment mechanism in an air inlet for the compressor, operable to move between an open position and a closed position solely by aerodynamic forces on the mechanism. The inlet-adjustment mechanism includes a plurality of flexible vanes collectively forming a duct, and an effective diameter of the air inlet at the inducer portion of the compressor wheel is determined by a trailing edge inside diameter of the duct. The vanes are movable solely by aerodynamic forces exerted on the vanes by the air flowing to the compressor wheel. The duct has a tapering configuration when the vanes are in a relaxed state, but under aerodynamic force the vanes flex outwardly and increase the trailing edge inside diameter of the duct, thereby increasing an effective diameter of the air inlet. 1. A turbocharger , comprising:a turbine housing and a turbine wheel mounted in the turbine housing and connected to a rotatable shaft for rotation therewith, the turbine housing receiving exhaust gas and supplying the exhaust gas to the turbine wheel;a centrifugal compressor assembly comprising a compressor housing and a compressor wheel mounted in the compressor housing and connected to the rotatable shaft for rotation therewith, the compressor wheel having blades and defining an inducer portion, the compressor housing defining an air inlet for leading air generally axially into the inducer portion of the compressor wheel, the compressor housing further defining a volute for receiving compressed air discharged generally radially outwardly from the compressor wheel, the air inlet having an inner surface that extends for an axial length along a downstream direction, followed by an inlet-adjustment mechanism disposed in the air inlet, followed by a shroud surface that is adjacent to outer tips of the blades of the compressor wheel;the inlet-adjustment mechanism comprising a plurality of vanes constructed of a flexible material, ...

Liquid / gas separator and centrifugal motor compressor unit equipped with such a separator

This liquid/gas separator for centrifugal motor compressor includes a sump internally equipped with at least one gas separator stage suitable to separate a gaseous phase from a liquid phase accepted in the sump entry. The sump internally includes a compartment in which the gaseous phase is separated by a separator stage, and in which is assembled by a compressor stage of the motor compressor.

AIR INTAKE DUCT STRUCTURE FOR CENTRIFUGAL FLUID MACHINE

An object is to provide an air intake duct structure for a centrifugal fluid machine, capable of swirling the fluid introduced into the impeller in the reverse direction to increase the pressure ratio when the flow rate is high and swirling the fluid in the forward direction to avoid a surging when the flow rate is low, as well as securing a wide operating range, without using mechanical means. The centrifugal fluid machine includes an impeller mounted to a rotation shaft and a housing for housing the impeller The air intake duct structure is for directing a fluid “f” to a rotational center of the impeller housed in the housing via an intake duct portion of the housing protruding in an axial direction of the rotation shaft, the fluid “f” flowing in a substantially orthogonal direction to a rotational axis line The air intake duct structure comprises an inflow part extending in the substantially orthogonal direction to the rotation axis line and a transition part connecting the inflow part and the intake duct portion of the housing There is a virtual plane orthogonal to the rotational axis line and passing through a flow path cross-section of the inflow part where an intersection of the virtual plane and the rotational axis line is positioned within the transition part 15-. (canceled)6. An air intake duct structure for a centrifugal fluid machine including an impeller mounted to a rotation shaft and a housing for housing the impeller , the air intake duct structure being configured to direct a fluid to a rotational center of the impeller housed in the housing via an intake duct portion of the housing protruding in an axial direction of the rotation shaft , the fluid flowing in a substantially orthogonal direction to the axial direction of the rotation shaft , the air intake duct structure comprising:an inflow part extending in the substantially orthogonal direction to the axial direction of the rotation shaft; anda transition part connecting the inflow part and the ...

CENTRIFUGAL COMPRESSOR ASSEMBLY AND METHOD

A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor. Another embodiment of the centrifugal compressor assembly comprises an integrated inlet flow conditioning assembly to condition flow of refrigerant into an impeller to achieve a target approximately constant angle swirl distribution with minimal guide vane turning. 1. A compressor assembly for compressing a refrigerant in a chiller system comprising:a. a centrifugal compressor having a 250-ton capacity or larger, said centrifugal compressor having a compressor housing with a compressor inlet for receiving the refrigerant and a compressor outlet for delivering the refrigerant;b. a shaft;c. an impeller in fluid communication with said compressor inlet and said compressor outlet, said impeller mounted to said shaft and being operable to compress refrigerant;d. a direct drive, high energy density motor for directly driving the shaft at a range of sustained operating speeds less than about 20,000 revolutions per minute; ande. a variable speed drive configured to vary operation of the motor within the range of sustained operating speeds.2. The compressor assembly of wherein the refrigerant is R-123 claim 1 , R-134a or R-22 in liquid claim 1 , gas claim 1 , or multiple phases.3. The compressor assembly of wherein the refrigerant is an azeotrope claim 1 , a zeotrope or a mixture or blend thereof in liquid claim 1 , gas ...

PUMP, REFRIGERATION CYCLE APPARATUS, AND METHOD FOR MANUFACTURING PUMP

In a rotor portion, a magnet formed in a cylindrical shape, a first magnet holder that holds an impeller-attachment-portion-side end portion of the magnet, a second magnet holder that holds a magnetic-pole-position-detection-element-side end portion of the magnet, a back yoke disposed inside the magnet, a sleeve bearing disposed inside the back yoke, and a position detection magnet that is provided on a surface of the second magnet holder at a side opposite to the side at which the magnet is attached and allows a magnetic flux of the position detection magnet to be detected by the magnetic-pole-position detection element are assembled integrally together with a thermoplastic resin, and the impeller attachment portion is formed of the thermoplastic resin. 1. A pump comprising:a molded stator including a board on which a magnetic-pole-position detection element is mounted; anda rotor including a rotor portion that is rotatably accommodated in a cup-shaped partition wall component, the rotor portion opposing the magnetic-pole-position detection element at one end and having an impeller attachment portion for attaching an impeller at the other end,wherein, in the rotor portion, a magnet, a first magnet holder that holds an impeller-attachment-portion-side end portion of the magnet, a second magnet holder that holds a magnetic-pole-position-detection-element-side end portion of the magnet, a back yoke disposed inside the magnet, a sleeve bearing disposed inside the back yoke, and a position detection magnet that is provided on a surface of the second magnet holder at a side opposite to a side at which the magnet is attached and allows a magnetic flux of the position detection magnet to be detected by the magnetic-pole-position detection element are assembled integrally together with a thermoplastic resin, and the impeller attachment portion is formed of the thermoplastic resin.2. The pump of claim 1 , 'a plurality of projections formed on a position-detection-magnet-side ...

CENTRIFUGAL COMPRESSOR FOR A TURBOCHARGER, HAVING SYNERGISTIC PORTED SHROUD AND INLET-ADJUSTMENT MECHANISM

A centrifugal compressor for a turbocharger includes an inlet-adjustment mechanism in an air inlet for the compressor, operable to move between a closed position, an open position, and a super-open position. The compressor also includes a ported shroud system. The inlet-adjustment mechanism includes a plurality of blades disposed about the air inlet and movable radially inwardly and outwardly for defining the various positions. In the closed position, the effective diameter of air inlet is reduced and the blades block flow through the ported shroud system. In the open position, the blades still block the ported shroud but the effective inlet diameter is increased relative to the closed position. In the super-open position, the blades unblock the ported shroud so that an additional amount of flow can pass through the ported shroud, thereby shifting the compressor's choke flow line to higher flow rates. 1. A turbocharger , comprising:a turbine housing and a turbine wheel mounted in the turbine housing and connected to a rotatable shaft for rotation therewith, the turbine housing receiving exhaust gas and supplying the exhaust gas to the turbine wheel;a centrifugal compressor assembly comprising a compressor housing and a compressor wheel mounted in the compressor housing and connected to the rotatable shaft for rotation therewith, the compressor wheel having blades and defining an inducer portion, the compressor housing having an air inlet wall defining an air inlet for leading air generally axially into the compressor wheel, the compressor housing further defining a shroud surface that is adjacent to and follows a radially outer contour of the compressor wheel;a compressor inlet-adjustment mechanism disposed in the air inlet of the compressor housing and movable between a closed position and a super-open position, the inlet-adjustment mechanism comprising a plurality of blades that are distributed about a circumference of the air inlet and that collectively form a ...

CENTRIFUGAL COMPRESSOR WITH LEAKAGE-FREE DIFFUSER BLADES AND METHOD OF ASSEMBLING A CENTRIFUGAL COMPRESSOR

A centrifugal compressor includes a rotor with a plurality of impellers and a stator with at least a first diaphragm, a second diaphragm, a diffuser, and a plurality of diffuser blades inside the diffuser; each diffuser blade has a tip portion, a base portion and an airfoil portion; and are located between the downstream portion of the first diaphragm and the upstream portion of the second diaphragm; the base portion of the diffuser blades is integrated in or mounted to the upstream portion of the second diaphragm, and the tip portion of the diffuser blades abuts against the downstream portion of the first diaphragm; alternatively, the base portion of the diffuser blades is integrated in or mounted to the downstream portion of the first diaphragm, and the tip portion of the diffuser blades abuts against the upstream portion of the second diaphragm. 1. A centrifugal compressor for a fluid , comprising a rotor with a plurality of impellers and a stator with at least a first diaphragm , a second diaphragm downstream the first diaphragm , a diffuser defined between a shroud side of a downstream portion of the first diaphragm and a hub side of a upstream portion of the second diaphragm , and a plurality of diffuser blades inside the diffuser , each diffuser blade having a tip portion , a base portion and an airfoil portion between the base portion and the tip portion ,wherein the diffuser blades are located between the downstream portion of the first diaphragm and the upstream portion of the second diaphragm,wherein the base portion of the diffuser blades is integrated in or mounted directly or indirectly to the upstream portion of the second diaphragm so to avoid fluid flow between the base portion and the hub side of the upstream portion, and the tip portion of the diffuser blades abuts against the downstream portion of the first diaphragm so to avoid fluid flow between the tip portion and the shroud side of the downstream portionorwherein the base portion of the ...

CENTRIFUGAL COMPRESSOR WITHOUT EXTERNAL DRAINAGE SYSTEM, MOTORCOMPRESSOR AND METHOD OF AVOIDING EXTERNAL DRAINAGE IN A COMPRESSOR

A compressor has a lower inlet with an intake plenum and an upper outlet with a discharge scroll; the compressor includes a plurality of drainage pipes ending at the intake plenum. 1. A centrifugal compressor having a vertical axis , a lower inlet with an intake plenum and an upper outlet with a discharge scroll , wherein the centrifugal compressor comprises a plurality of drainage pipes ending at the intake plenum , and wherein the compressor is configured to process the drained liquid accumulated in the intake plenum.2. The centrifugal compressor of claim 1 , wherein the intake plenum comprises an upper convergent portion claim 1 , and wherein the drainage pipes end at the upper convergent portion.3. The centrifugal compressor of claim 1 , wherein at least the end portions of the drainage pipes are inclined with respect to the vertical axis and/or skew with respect to the vertical axis.4. The centrifugal compressor of claim 1 , wherein the centrifugal compressor comprises a plurality of impellers claim 1 , wherein at least the first impeller is resistant to liquid droplets.5. The centrifugal compressor of claim 1 , wherein a bearing device is located in the intake plenum claim 1 , in particular in an upper convergent portion of the intake plenum claim 1 , for guiding and/or supporting a shaft of the centrifugal compressor.6. The centrifugal compressor of claim 5 , wherein the centrifugal compressor has a casing claim 5 , wherein the bearing device has a housing claim 5 , and wherein the housing is connected to the casing through a plurality of struts.7. The centrifugal compressor of claim 6 , wherein electric wires and/or pipes are associated to the struts.8. The centrifugal compressor of claim 1 , wherein a cylindrical shell is located below the bearing device and covers electric wires.9. A motorcompressor comprising a motor and a centrifugal compressor driven by the motor claim 1 , wherein the centrifugal compressor is according to .10. A method of avoiding ...

TURBOCHARGER WITH GAS AND LIQUID FLOW PATHS

A turbocharger can include a housing that includes an interior cavity in fluid communication with a lubricant inlet and a lubricant outlet where, at a compressor side, the interior cavity includes an effective opening at a first axial face that spans an azimuthal angle about an axis of a through bore of the housing; a compressor side plate disposed at least in part in a compressor side recess of the housing; and a lubricant deflector plate disposed between the compressor side plate and the first axial face of the housing where the lubricant deflector plate includes an effective opening that substantially spans the azimuthal angle about the axis and where the lubricant deflector plate defines a seal cavity with respect to a compressor side seal recess of the housing. 1. A turbocharger comprising: a compressor side,', 'a turbine side,', 'a through bore that extends between the compressor side and the turbine side,', 'a compressor side recess defined in part by a first radius and a first axial face with respect to an axis of the through bore,', 'a compressor side seal recess defined in part by a second radius and a second axial face with respect to the axis wherein the compressor side seal recess comprises a drain passage,', 'a lubricant inlet,', 'a lubricant outlet, and', 'an interior cavity in fluid communication with the lubricant inlet and the lubricant outlet wherein, at the compressor side, the interior cavity comprises an effective opening at the first axial face that spans an azimuthal angle about the axis;, 'a housing that comprises'}a shaft and turbine wheel assembly that comprises a shaft free end and a turbine wheel end;a collar that comprises a bore wherein the shaft is received in the bore of the collar;a compressor side plate disposed at least in part in the compressor side recess wherein the compressor side plate comprises an opening and wherein the collar is disposed at least in part in the opening; anda lubricant deflector plate disposed between the ...

METHOD FOR MANUFACTURING COMPRESSOR COMPONENTS

A method forming a metallic structure having two or more portions is provided. The method can include providing a first layer of metal-forming material and then applying energy of a first power level to a first area of the first layer of metal-forming material to form a first portion of the metallic structure having a first density. Energy of a second power level can then be applied to a second area of the first layer of metal-forming material to form a second portion of the metallic structure having a second density. A second layer of the metal-forming material can be applied on top of the first portion and the second portion. The energy of the first power level can be applied to a first area of the second layer of metal-forming material and the energy of the second power level can be applied to a second area of the second layer to form the metallic structure. 1. A method for forming a metallic structure having two or more portions , the method comprising:providing a first layer of metal-forming material;applying energy of a first power level to a first area of the first layer of metal-forming material to form a first portion of the metallic structure having a first density;applying energy of a second power level to a second area of the first layer of metal-forming material to form a second portion of the metallic structure having a second density;providing a second layer of the metal-forming material on top of the first portion and the second portion of the metallic structure;applying the energy of the first power level to a first area of the second layer of metal-forming material; andapplying the energy of the second power level to a second area of the second layer of metal-forming material.2. The method further comprising applying energy of a third power level to a third portion of the first layer of metal-forming material and the second layer of metal-forming material to form a third portion of the metallic structure having a third density.3. The method of ...

CENTRIFUGAL COMPRESSOR

A centrifugal compressor includes: an upstream side squeeze portion having a flow passage cross-sectional area that decreases as the upstream side squeeze portion extends closer to a compressor impeller; a partition wall facing the inner circumferential surface of the upstream side squeeze portion and arranged with a gap from the inner circumferential surface of the upstream side squeeze portion; and a protrusion protruding from at least one of the inner circumferential surface of the upstream side squeeze portion or the outer circumferential surface of the partition wall. 1. A centrifugal compressor comprising:a compressor impeller;a main flow passage formed on a front side of the compressor impeller;a squeeze portion provided in the main flow passage, the squeeze portion having a flow passage cross-sectional area that decreases as the squeeze portion extends closer to the compressor impeller;a partition wall facing an inner circumferential surface of the squeeze portion and arranged with a gap from the inner circumferential surface of the squeeze portion; anda protrusion protruding from at least one of the inner circumferential surface of the squeeze portion or an outer circumferential surface of the partition wall.2. The centrifugal compressor according to claim 1 ,wherein the protrusion includes portions that are spaced apart from each other and face each other in an axial direction of the compressor impeller.3. The centrifugal compressor according to claim 1 ,wherein the protrusion extends for one or more rounds in a rotation direction of the compressor impeller.4. The centrifugal compressor according to claim 2 ,wherein the protrusion extends for one or more rounds in a rotation direction of the compressor impeller.5. The centrifugal compressor according to claim 1 ,wherein the protrusion includes portions spaced apart from each other and facing each other in an axial direction of the compressor impeller, and an interval of the protrusion between a portion ...

CENTRIFUGAL COMPRESSOR

A casing surrounds a rotary shaft and impellers (), and includes a return flow path through which a fluid discharged from the impeller () on a front stage side between the impellers () adjacent to each other is guided inward in a radial direction so as to be introduced to the impeller () on a rear stage side, and a plurality of return vanes () disposed at an interval in a circumferential direction inside the return flow path. An exit angle of the return vane () is inclined forward in a rotation direction of the impeller (), according to the radial direction, and the exit angle of the return vane () decreases toward the return vane () on the rear stage side. 1. A centrifugal compressor comprising:a rotary shaft rotated around an axis;impellers disposed so as to form a plurality of stages in a direction of the axis with respect to the rotary shaft and is configured to be pumped a fluid flowing from an inlet on one side in the direction of the axis to outward in a radial direction;a casing that surrounds the rotary shaft and the impellers, and that has a return flow path through which the fluid discharged from an impeller on a front stage side between the impellers adjacent to each other is guided inward in the radial direction so as to be introduced to an impeller on a rear stage side; anda plurality of return vanes disposed at an interval in a circumferential direction inside the return flow path,wherein an exit angle of the return vane is inclined forward in a rotation direction of the impeller, according to the radial direction, andwherein the exit angle of the return vane decreases toward the return vane on the rear stage side.2. The centrifugal compressor according to claim 1 ,wherein a flow path cross-sectional area of the inlet of the impellers decrease toward the impeller on the rear stage side. The present invention relates to a centrifugal compressor. Priority is claimed on Japanese Patent Application No. 2017-032022, filed on Feb. 23, 2017, the content of ...

COMPRESSOR DIFFUSER WITH DIFFUSER PIPES VARYING IN NATURAL VIBRATION FREQUENCIES

The diffuser pipe assembly for a compressor of a gas turbine engine includes diffuser pipes circumferentially distributed around a central axis and configured for distributing a flow of compressed air from the compressor to the combustor. Each of the diffuser pipes curving between an inlet end and an outlet end. A first subset of the diffuser pipes has a natural vibration frequency different than a natural vibration frequency of at least a second subset of the diffuser pipes. A method of operating a compressor including the diffuser pipe assembly is also disclosed. 1. A diffuser pipe assembly for a centrifugal compressor of a gas turbine engine defining a central axis extending longitudinally through the diffuser pipe assembly , the diffuser pipe assembly comprising: a plurality of diffuser pipes circumferentially distributed around the central axis and configured for diffusing a flow of compressed air received from an impeller , the diffuser pipes curving between an inlet end and an outlet end , and a first subset of the diffuser pipes configured to have a natural vibration frequency different than a natural vibration frequency of at least a second subset of the diffuser pipes.2. The diffuser pipe assembly of claim 1 , wherein the first subset of diffuser pipes includes more than one of the diffuser pipes and the second subset of diffuser pipes includes a remainder of the diffuser pipes claim 1 , the diffuser pipes of the first subset having each a first natural vibration frequency claim 1 , the diffuser pipes of the second subset having each a second natural vibration frequency different than the first natural vibration frequency.3. The diffuser pipe assembly of claim 2 , wherein the diffuser pipes of the first subset and of the second subset circumferentially alternate around the central axis.4. The diffuser pipe assembly of claim 1 , wherein the diffuser pipes are divided between the first claim 1 , the second claim 1 , and a third subset of diffuser pipes claim ...

LOW-NOISE BLOWER

A low-noise blower that can provide a smooth transition of fluid flow and reduce audible noise, which can disrupt a patient's rest and cause fatigue to patients and caregivers, the blower having an impeller and a housing, the impeller with an impeller plate and a plurality of blades each attached to the impeller plate, and the housing with an impeller cavity and a collector, where a slot with inclined surfaces extends between the impeller cavity and the collector. 1. A blower comprising:an impeller having an impeller plate and a plurality of blades attached to the impeller plate, wherein the impeller plate comprises a top surface, and the plurality of blades comprise a top surface; anda housing comprising a top housing portion and a bottom housing portion, the top housing portion having a slot upper edge with an inclined surface, and the bottom housing portion having a slot lower edge with an inclined surface;wherein the top and bottom housing portions are coupled together to form an impeller cavity, a collector surrounding the impeller cavity, and a slot extending between the impeller cavity and the collector such that a distance between the inclined surfaces of the slot upper edge and the slot lower edge increases from the impeller cavity to the collector; andwherein the impeller is positioned within the cavity with the top surface of the plurality of blades aligned the slot upper edge, and the top surface of the impeller plate aligned with the slot lower edge.2. The blower of claim 1 , wherein each of the slot upper edge and the slot lower edge comprise a radius proximate to the impeller claim 1 , and wherein the top surface of the plurality of blades is aligned with a peak of the upper edge radius claim 1 , and the top surface of the impeller plate is aligned with a peak of the lower edge radius.3. The blower of claim 1 , wherein the inclined surfaces are disposed relative to each other at an angle within a range of 10-40 degrees.4. The blower of claim 1 , ...

Method of manufacturing supercharger

An object is to provide a method of manufacturing a supercharger that can promptly and easily form an abradable layer in a supercharger. A method of manufacturing a supercharger is a method of manufacturing a supercharger including a turbine configured to rotationally drive, and a compressor having an impeller configured to rotate according to rotational force of the turbine and a housing ( 10 ) configured to store the impeller, and the method includes a process of applying coating of an abradable material which is to form an abradable layer ( 20 ) when being solidified, only to a predetermined range on a surface of the housing ( 10 ) via which the impeller and the housing ( 10 ) face.

Centrifugal compressor

The centrifugal compressor ( 1 ) includes: an impeller ( 3 ); and a casing ( 2 ) accommodating the impeller ( 3 ). The casing ( 2 ) includes: an inlet ( 6 ); an impeller-accommodating portion ( 14 ) in which the impeller ( 3 ) is disposed; an annular chamber ( 11 ) formed around the inlet ( 6 ); a downstream groove ( 13 ) communicating a downstream end portion of the annular chamber ( 11 ) with the impeller-accommodating portion ( 14 ); and an upstream groove ( 12 ) communicating an upstream end portion of the annular chamber ( 11 ) with the inlet ( 6 ). In addition, the downstream groove ( 13 ) is provided in a predetermined range in a circumferential direction of the impeller ( 3 ) so as to communicate with a high-pressure part to occur in part of the impeller-accommodating portion ( 14 ), and the upstream groove ( 12 ) is provided over the entire circumference of the inlet ( 6 ).

METHOD OF PROTECTING A COMPONENT OF A TURBOMACHINE FROM LIQUID DROPLETS EROSION, COMPONENT AND TURBOMACHINE

The method of protecting a component of a turbomachine from liquid droplets erosion provides covering at least one region of a component surface exposed to a flow of a fluid containing a liquid phase to be processed by the turbomachine with a protective layer. The protective layer consists of a plurality of adjacent sub-layers of different materials having high hardness in the range of 1000-3000 HV and low fracture toughness below 20 MPam. The materials are typically nitrides or carbides of titanium or aluminum or chromium or tungsten. In an embodiment, the covering is carried out by a PVD technique, in particular by Cathodic Arc PVD, or a CVD technique. The method may be applied to any component of turbomachines, but it may be particularly beneficial for parts of centrifugal compressors. 1. A method of protecting a component of a turbomachine from liquid droplets erosion , the method comprising:covering at least one region of a component surface exposed to a flow of a fluid containing a liquid phase to be processed by the turbomachine with a protective layer,wherein the protective layer comprises a plurality of adjacent sub-layers of two materials in alternate position,{'sup': '1/2', 'wherein the materials have high hardness in the range of 1000-3000 HV and low fracture toughness below 20 MPam, and'}wherein a first material of the two materials is a stoichiometric nitride or carbide or boride of titanium or zirconium or chromium or tungsten or aluminum or vanadium, and a second material of the two materials is a non-stoichiometric nitride or carbide or boride of titanium or zirconium or chromium or tungsten or aluminum or vanadium.2. The method of claim 1 , wherein the materials are Titanium Nitride (TiN).3. The method of claim 1 , wherein the covering is carried out by a CVD technique.4. The method of claim 1 , wherein the covering is carried out by a PVD technique.5. The method of claim 4 , wherein “targets” for the Cathodic Arc PVD are located and/or shaped so ...

MOTOR-DRIVEN COMPRESSOR EQUIPPED WITH MULTIPLE COMPRESSION SECTIONS

This motor-driven compressor equipped with multiple compression sections, the motor-driven compressor including, at least one housing, at least two drive shafts, the at least two drive shafts being rotatably supported in the housing by at least two bearings, a flexible coupling device connecting the drive shafts, an electric motor mounted on a first compression shaft of the at least two drive shafts, and at least two compression sections. A first compression section of the at least two compression sections is cantilevered at a free end of a first compression shaft of the at least two drive shafts, and a second compression section is mounted between two bearings on a second compression shaft of the at least two drive shafts. 1. A motor-driven compressor with multiple compression sections , the motor-driven compressor comprising:at least one housing;at least two drive shafts, the at least two drive shafts being rotatably supported in the housing by at least two bearings;a flexible coupling device connecting the drive shafts;an electric motor mounted on a first compression shaft of said at least two drive shafts; and{'claim-text': 'a first compression section of said at least two compression sections is cantilevered at a free end of a first compression shaft of said at least two drive shafts, and a second compression section is mounted between two bearings on a second compression shaft of said at least two drive shafts.', '#text': 'at least two compression sections, wherein:'}2. The motor-driven compressor according to claim 1 , wherein the first compression shaft comprises a first free end and is rotatably supported by a first pair of bearings.3. The motor-driven compressor according to claim 1 , wherein the second compression shaft comprises a second free end and is rotatably supported by a second pair of bearings.4. The motor-driven compressor according to claim 1 , wherein the flexible coupling device is connected to the first compression shaft and the second ...

IMPELLER EXDUCER CAVITY WITH FLOW RECIRCULATION

A centrifugal compressor for an aircraft engine is disclosed, having an impeller mounted for rotation about an axis. The impeller has impeller blades extending from an inducer end to an exducer end. A shroud extends over the impeller blades. A main flow passage is defined between the shroud and the impeller, a cavity fluidly communicates with the main flow passage via at least one extraction port and at least one reinjection port. The reinjection port is fluidly connected to the main flow passage upstream of the extraction port relative to a flow direction through the main flow passage. The reinjection port is disposed upstream of the exducer end of the impeller blade, in an exducer portion of the shroud. 1. A centrifugal compressor for an aircraft engine , comprising:an impeller mounted for rotation about an axis, the impeller having impeller blades extending from an inducer end to an exducer end;a shroud extending over the impeller blades;a main flow passage defined between the shroud and the impeller;a cavity fluidly communicating with the main flow passage via at least one extraction port and at least one reinjection port, the at least one reinjection port fluidly connected to the main flow passage upstream of the extraction port relative to a flow direction through the main flow passage, the at least one reinjection port disposed upstream of the exducer end of the impeller blade, in an exducer portion of the shroud, wherein the at least one reinjection port defines a reinjection outlet in a gas path surface of the shroud, the gas path surface defining a bend portion extending between an inducer portion and the exducer portion, the reinjection outlet located within about one third of the chord of the impeller from the exducer end.2. The centrifugal compressor as defined in claim 1 , wherein the impeller has a shroud side and an opposite hub side claim 1 , the cavity located on the shroud side of the impeller.3. The centrifugal compressor as defined in claim 1 , ...

CENTRIFUGAL ROTARY MACHINE

The centrifugal compressor includes an impeller configured to feed a fluid suctioned from one side to an outside in a radial direction by rotating about an axis, and a flow path provided between the impellers adjacent to each other in the direction of an axis and configured to guide the fluid discharged from an impeller on the upstream side to an impeller on the downstream side. The flow path includes a diffuser flow path, a return bend portion, and a guide flow path. Further, the centrifugal compressor further includes return vanes extending across the return bend portion and the guide flow path in the flow path and provided in intervals in a circumferential direction, and the radial positions of the leading edges of the return vanes in the flow paths adjacent in the direction of the axis are different from each other. 1. A centrifugal rotary machine comprising:a rotor rotating about an axis thereof;a casing covering the rotor and forms a flow path;a plurality of impellers, that are provided on the rotor, that are arranged in an axial direction and that are configured to feed a fluid suctioned from one side in the axial direction to the outside in the radial direction of the axis by rotating about the axis; andflow paths, each of which are provided between the impellers adjacent to each other in the axial direction, and configured to guide the fluid discharged from an upstream impeller to a downstream impeller,wherein each flow path includes:a diffuser flow path extending from the inside to the outside in the radial direction of the axis and configured to guide the fluid discharged from the upstream impeller to the outside in the radial direction;a return bend portion, one end of which is communicated with the diffuser flow path, and which is a curved flow path configured to guide the fluid guided by the diffuser flow path toward the inside in the radial direction;a guide flow path communicated with the other end of the return bend portion and configured to guide ...

CENTRIFUGAL COMPRESSOR

A centrifugal compressor includes a rotary shaft, an electric motor, which has a rotor, a tubular boss, through which the rotary shaft extends, and a radial bearing. The rotor has a rotor end face, which is an end face in an axial direction of the rotary shaft. The boss has a boss end face, which is an end face in the axial direction of the rotary shaft. The rotor end face and the boss end face face each other in the axial direction of the rotary shaft. A thrust bearing is arranged between the rotor end face and the boss end face to receive thrust force generated by rotation of the impeller. 1. A centrifugal compressor comprising:a rotary shaft;an electric motor, which includes a rotor attached to the rotary shaft and rotates the rotary shaft;an impeller, which rotates as the rotary shaft rotates, thereby compressing fluid;a housing, which accommodates the rotary shaft, the electric motor, and the impeller;a tubular boss, which is provided in the housing and through which the rotary shaft extends; anda radial bearing, which is provided between the boss and the rotary shaft and rotationally supports the rotary shaft, whereinthe rotor has a rotor end face, which is an end face in an axial direction of the rotary shaft,the boss has a boss end face, which is an end face in the axial direction of the rotary shaft,the rotor end face and the boss end face face each other in the axial direction of the rotary shaft, andthe centrifugal compressor comprises a thrust bearing, which is arranged between the rotor end face and the boss end face and receives thrust force generated by rotation of the impeller.2. The centrifugal compressor according to claim 1 , whereinthe boss is a first boss,the centrifugal compressor further comprises a second boss, which makes a pair with the first boss,the first boss and the second boss are arranged to face each other in the axial direction of the rotary shaft with the rotor in between,the rotor has a first rotor end face as the rotor end face ...

COMPRESSOR SCROLL AND CENTRIFUGAL COMPRESSOR

A compressor scroll (A) is provided with: a scroll-flow-path formation part (A) that forms a scroll flow path; and an outlet-flow-path formation part () that is connected to a winding-end section () of a scroll flow path () and that forms an outlet flow path () extending in a direction tangential to a circle around an axis (O), wherein, at least at the winding-end section () in an area where a winding-start section () intersects with the winding-end section (), the scroll-flow-path formation part (A) is provided with a bulging part (A) that bulges the scroll flow path in the radial direction toward the side where the winding-start section () is present. 1. A compressor scroll comprising:a scroll flow path forming portion that forms a scroll flow path extending in a circumferential direction about an axis, having a spiral starting portion and a spiral ending portion intersecting and communicating with each other, and allowing a fluid to flow therein from a diffuser outlet formed on a first side of an axis direction and in a radially inward direction about the axis; andan outlet flow path forming portion that forms an outlet flow path communicating with the spiral ending portion of the scroll flow path and extending in a tangential direction of a circle about the axis,wherein the scroll flow path forming portion includes an expanded portion, which causes the scroll flow path to expand toward the spiral starting portion in the radial direction, at least in the spiral ending portion in a portion where the spiral starting portion and the spiral ending portion intersect each other.2. The compressor scroll according to claim 1 , further comprising:an expansion changing portion in which expansion of the expanded portion gradually reduces as becoming closer to at least one of an upstream side or a downstream side of the scroll flow path from the expanded portion.3. The compressor scroll according to claim 1 ,wherein the expanded portion further includes a curved surface of ...

Method for producing casing for radial compressor, and method for producing radial compressor

The present invention provides a method for producing a casing for a compressor, the method including an intake-side casing molding process of molding an intake portion and a first main body portion of a scroll portion by integral molding of resin; an impeller-side casing molding process of integrally molding a second main body portion of the scroll portion and a diffuser portion by a resin molding metal mold used in the intake-side casing molding process; a die sliding process of combining the intake portion and the first main body portion which have been integrally molded, and the second main body portion and the diffuser portion which have been integrally molded, by slide of the resin molding metal mold; and a secondary molding process of joining the intake portion and the first main body portion, and the second main body portion and the diffuser portion combined with each other by resin.