СПОСОБ И СИСТЕМА УПРАВЛЕНИЯ КОМПРЕССОРОМ И ТРАНСПОРТНОЕ СРЕДСТВО С ТАКОЙ СИСТЕМОЙ

Изобретение относится к компрессорам для системы охлаждения транспортного средства. Для управления компрессором регулируют его производительность посредством тока управления, который подают в управляющий элемент. Удерживают ток управления, подаваемый в управляющий элемент, равным практически 0 A в течение первого (1) периода времени. Ступенчато увеличивают ток управления от 0 А до минимального значения, которое обеспечивает стабильный уровень показателей работы компрессора. Достигается снижение результирующей нагрузки на двигатель. 3 н. и 15 з.п. ф-лы, 1 ил.

ЭЛЕКТРИЧЕСКАЯ МАШИНА, КРЫЛЬЧАТКА И ВЕНТИЛЯТОР

Изобретение относится к области электрических машин. Осевая поточная крыльчатка (200) имеет ось (R) вращения и содержит центральную ступицу (201), содержащую основную стенку и боковую стенку, выступающую из основной стенки для образования чашеобразной конструкции, множество лопастей (204), каждая из которых прикреплена к центральной ступице (201) и содержит передний край (205) и задний край, множество экстракторов текучей среды, связанных с основной стенкой, для перемещения воздуха от внутренней части чашеобразной конструкции к внешней части чашеобразной конструкции через основную стенку. Техническим результатом является улучшение охлаждения. 3 н. и 22 з.п. ф-лы, 8 ил.

УЗЕЛ ТУРБОКОМПРЕССОРА С ОХЛАЖДАЮЩЕЙ СИСТЕМОЙ

Узел (10) турбокомпрессора разделен вдоль оси (12) ротора (11) на три секции (13, 18, 22): опорную (13), (18) двигателя и (22) компрессора. Опорная секция (13) имеет по меньшей мере один активный магнитный подшипник (14) для опоры ротора (11). Секция (18) двигателя содержит двигатель (19), имеющий статор (20), расположенный вдоль оси (12) ротора (11). Статор (20) окружает круговой зазор (21) двигателя, который образован между статором (20) и ротором (11). Секция (22) компрессора имеет компрессор (23) для сжатия охлаждающей текучей среды (30). Узел (10) турбокомпрессора дополнительно содержит общий газонепроницаемый корпус (26) и охлаждающую систему (27). Корпус (26) окружает ротор (11), опорную секцию (13), секцию (18) двигателя и секцию (22) компрессора. Охлаждающая система (27) имеет вход (28) для подачи сжатой охлаждающей текучей среды (30) в опорную секцию (13) и секцию (18) двигателя через канал (29) текучей среды, расположенный между опорной секцией (13) и секцией (18) двигателя.

ЭЛЕКТРИЧЕСКАЯ МАШИНА, КРЫЛЬЧАТКА И ВЕНТИЛЯТОР

КОМПРЕССОР СО ВСТРОЕННЫМИ ДВИГАТЕЛЯМИ И РАБОЧИМИ КОЛЕСАМИ, ОБЪЕДИНЕННЫМИ С РОТОРАМИ ДВИГАТЕЛЕЙ

УЗЕЛ ТУРБОКОМПРЕССОРА С ОХЛАЖДАЮЩЕЙ СИСТЕМОЙ

... 1. Узел (10) турбокомпрессора, разделенный вдоль оси (12) ротора (11) по меньшей мере на три секции (13, 18, 22):опорную секцию (13), имеющую по меньшей мере один активный магнитный подшипник (14) для опоры ротора (11);секцию (18) двигателя, содержащую двигатель (19), имеющий статор (20), расположенный вдоль оси (12) ротора (11), при этом статор (20) окружает круговой зазор (21) двигателя, который образован между статором (20) и ротором (11);секцию (22) компрессора, имеющую компрессор (23) для сжатия охлаждающей текучей среды (30);при этом узел (10) турбокомпрессора дополнительно содержит:общий газонепроницаемый корпус (26), окружающий ротор (11), опорную секцию (13), секцию (18) двигателя и секцию (22) компрессора; иохлаждающую систему (27), имеющую вход (28) для подачи сжатой охлаждающей текучей среды (30) в опорную секцию (13) и секцию (18) двигателя через канал (29) текучей среды, расположенный между опорной секцией (13) и секцией (18) двигателя,отличающийся тем, что охлаждающая система ...

СПОСОБ СЖАТИЯ И РАЗДЕЛЕНИЕ ВОЗДУХА

... 1. Способ сжатия газа, содержащий этапы, при которых:сжимают газ в последовательности ступеней сжатия от более низкого давления до более высокого давления;эксплуатируют ступени сжатия в нормальных рабочих условиях, во время которых газ подают под более высоким давлением и при большем расходе, и в условиях неполной нагрузки, во время которых газ подают под более высоким давлением и при меньшем расходе,причем ступени сжатия имеют компрессоры, приводимые в действие двигателями с регулируемой скоростью, выполненными с возможностью приводить компрессоры в действие на скоростях, которые можно регулировать независимо для каждого из компрессоров, тем самым регулируя расход через компрессоры и степени повышения давления на компрессорах, иво время рабочих условий неполной нагрузки регулируют скорости двигателей с регулируемой скоростью, а значит - и скорости компрессоров и степени повышения давления на компрессорах, так, что первый из компрессоров, связанный с первой из ступеней сжатия, работает ...

GEBLÄSEBAUGRUPPE UND VERFAHREN ZUM MONTIEREN DERSELBEN

Eine Gebläsebaugruppe enthält einen Ventilator, welcher eine Frontplatte enthält, die einen Ventilatoreinlass definiert. Die Gebläsebaugruppe enthält auch eine Einlassplatte, die benachbart zu dem Ventilator positioniert ist, so dass die Einlassplatte und die Frontplatte zwischen sich einen Hohlraum definieren, welcher sich umlaufend um den Ventilatoreinlass herum erstreckt. Ein Motor ist mit dem Ventilator und mit der Einlassplatte gekoppelt und so konfiguriert, dass er sich um die Rotationsachse dreht. Der Motor ist innerhalb des Hohlraums positioniert.

Rotorbaugruppe

Die Erfindung betrifft einen Hochdrehzahl-Radialventilator sowie eine Rotorbaugruppe (10) für einen Hochdrehzahl-Radialventilator umfassend ein innen axial offenes Lagerrohr (20) in dem eine, ein Ventilatorrad (30) tragende Welle (40) mit einem Rotor (50) gelagert ist, wobei der Rotor (50) der Rotorbaugruppe (10) in einem zylinderförmigen Spalttopf (3) gelagert ist.

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.

Wall-mounted ventilation fan - has external-rotor motor with blades held by radial spokes in smooth tubular housing with outward mounting eyes

The wall-mounted (21) ventilation fan comprises a motor (8) with an external rotor (27) serving as the hub of a bladed (11) impeller. The fan is completely contained within a tubular housing (1) provided with outward mounting eyes (at 2) and a radially inward spider (4) carrying the central motor stator (via 7). The spider is arranged on the outlet side of the fan and the housing is an internally and externally smooth cylinder, except for the mounting eyes. The spider may consist of three radial spokes whilst the fan has five blades. The internal housing diameter (23) is pref 73mm plus/minus 10% and around 2.25 times the external hub dia (22).

Vorrichtung zur Übertragung mechanischer Energie auf ein Fluid

Vorrichtung zur Übertragung mechanischer Energie auf ein durch diese durchströmendes Fluidmedium, umfassend einen Stator (1) und ein rotierendes Rad (2) in Form eines Rotors, das innerhalb des Stators (1) montiert ist, und einen Außenring (5) und innerhalb des Rings gelagerte Schaufeln (8) umfasst, wobei Permanentmagnete (9) innerhalb des Außenrings (5) montiert sind und eine elektromagnetische Struktur zum Antreiben des rotierenden Rades (2) auf dem Stator (1) montiert ist, dadurch gekennzeichnet, dass die elektromagnetische Struktur des Stators (1) radial um das rotierende Rad (2) herum Elektromagnete (3) umfasst, mit der Möglichkeit, die Polarisation zu ändern, dadurch gekennzeichnet, dass die mechanische Energieübertragung erfolgt, wenn jeder Permanentmagnet (9) mit den im jeweiligen Moment benachbarten Elektromagneten (3) zusammenwirkt, wobei jeder Permanentmagnet (3) so eingerichtet ist, dass er mit zwei Elektromagneten (3) zusammenwirkt, so dass er von einem der besagten Elektromagnete ...

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.

Waschflüssigkeitspumpe

Bei einer Waschflüssigkeitspumpe (2) für eine Scheibenwaschanlage (3) eines Kraftfahrzeuges ist ein Entlüftungskanal (21) eines Elektromotors (9) in einem Labyrinth von einer ersten, im Elektromotor (9) angeordneten Ebene (22) über eine zweite, in einem Sammelraum (23) angeordnete Ebene (24) in die Umgebung geführt. Der Entlüftungskanal (21) hat hierfür zwei erste Abschnitte (20), welche von dem Elektromotor (9) vertikal in den Sammelraum (23) führen, und zwei zweite Abschnitte (26), welche von dem Sammelraum (23) vertikal in die Umgebung münden. Die ersten und die zweiten Abschnitte (20, 26) sind zueinander um 90° versetzt, so dass ein Eintrag von Spritzwasser in den Elektromotor (9) vermieden wird.

SAUGVORRICHTUNG

Integrierter Lüfter

Vorrichtung zum Antreiben eines Verdichters

Die Erfindung betrifft eine Vorrichtung zum Antreiben eines Verdichters eines dampfförmigen Fluids, insbesondere einen Elektromotor. Die Vorrichtung weist einen Rotor und einen Stator (1) auf, welche sich entlang einer gemeinsamen Längsachse (5) erstreckend angeordnet sind. Dabei ist an einer ersten in einer axialen Richtung ausgerichteten Stirnseite des Stators (1) ein Trägerelement (6) anliegend angeordnet, welches mit mindestens einem Aufnahmeelement (7) für ein Steckergehäuse (7b) zur Aufnahme von mindestens einem Steckverbinder als eine zusammenhängende Einheit und einteilige Komponente ausgebildet ist. Das Trägerelement (6) ist in axialer Richtung an einem fest mit dem Stator verbundenen Isolationselement (4) mit einer zylinderförmigen Wandung anliegend angeordnet und weist eine axial ausgerichtete Ringfläche (6a) auf.

ZENTRIFUGALTURBINE FÜR ATEMHILFEVORRICHTUNGEN

Blower for vehicle, has permanent magnets variably magnetized in sequential segments, and variable magnetizable stator part comprising number of variably magnetizable coils for producing magnetic travelling field

The blower has a permanently magnetizable circular rotor part (4) arranged into a variable magnetizable stator part (2) and connected with air blades (5). The rotor part has permanent magnets (6) that are arranged at an edge of the air blades. The permanent magnets in a circumferential direction of the rotor part are variably magnetized in sequential segments (11). The stator part has a number of variably magnetizable coils (7) for producing a magnetic travelling field. The variable magnetizable coils are arranged at a holding frame (10), an air circulation or a blower housing.

Turbo-machine with toroidal inductor

A turbo-machine 1 comprises a rotor assembly 3, a stator assembly 4, and a toroidal inductor 22. The rotor assembly comprises an impeller 15, and the inductor surrounds the rotor assembly. The inductor is located between the impeller and the stator assembly and is exposed to an airflow generated by or acting upon the impeller. The rotor assembly may comprise a shaft 12 to which a rotor core 13, a bearing assembly 14 and the impeller are mounted. The bearing assembly may be located between the rotor core and the impeller, with the inductor surrounding the bearing assembly. The turbo-machine may comprise a circuit board, the inductor being electrically coupled thereto. The stator assembly may be located between the circuit board and the inductor. In a second aspect, a turbo-machine comprises an impeller 15, while a shroud 16 covers the impeller, and a toroidal inductor 22 surrounds the shroud.

Permanent magnet rotor

A motor and a handheld product having a motor

Hybrid turbocharger with air bearings

A hybrid turbocharger comprises a turbine 11,18, a compressor 14,53, and an electric motor/generator comprising rare earth permanent magnets 49, fixed to a shaft 19, and a stator 45 having a winding 46. The shaft 19 is supported by air bearings 20,21, each comprising a bush 28 surrounding a portion of the shaft provided with grooves, and supplied with air from the compressor via a passage 75. Alternative groove configurations are disclosed (figs. 3-7) and the grooves may be of different depths. In order to prevent the permanent magnets 49, from being overheated, the passage 75 supplies air to a gap portion 39 that communicates with a region 41 via slots (42 fig.9) in the adjacent bush 28. A thrust bearing 62, is also provided.

Rotor assembly for a turbomachine

Motor cooling system for chillers

Cooling systems and methods for controlling the temperature of motors of gas compression systems of chillers are disclosed. Certain systems utilize a centrifugal, two stage compressor equipped with a motor between the stages. The cooling system provides a low velocity refrigerant spray on at least one or both ends of the motor without requiring additional pumping energy from the motor to deliver the refrigerant spray.

Integrated crossflow blower motor apparatus and system

Flue-Pipe Fan

Columnar air moving devices, systems and methods

Energy collector

Electric motor-driven blower

... 1,133,166. Centrifugal blowers. ROTRON MFG. CO. Inc. Dec. 5, 1966 [Feb. 2, 1966], No. 54379/66. Heading F1C. [Also in Division E2] A centrifugal blower casing 12 is clamped to an electric motor housing 10 by wedges 32, which are drawn up inclined surfaces 30 by screws 36 to engage the inner surface of a cylindrical extension 29 of the casing 12. Slackening of the screws 36 permits the angular position of the blower casing with respect to the motor housing to be adjusted, an elastic band 42 moving the wedges radially inwardly when the screws are slackened.

Brushless motor and method for manufacturing same

STABLE LIQUID FORMULATION OF AMG 416 (VELCALCETIDE)

STABLE LIQUID FORMULATION OF AMG 416 (VELCALCETIDE)

ELECTRICAL ENGINE

TURBOCHARGER

COMPRESSOR

TURBO COMPRESSOR

A PRESSURISED GASES SOURCE

... - 32 A pressurised gases source is provided, the source comprising a centrifugal impeller driven by a motor within a housing, the housing having a gases inlet, a gases outlet and a partition to define first and second interior regions. The first region is defined by the housing and the partition and comprises the gases inlet and the impeller, and the second region is defined by the housing and the partition and comprises the gases outlet. The first and second regions are fluidly connected by an opening formed in or by the partition. The opening has a shape with a gradual opening and a gradual closing relative to a plane of rotation of the impeller ...

Motor-driven centrifugal air compressor

Compact Low Noise Efficient Blower for CPAP Devices

Single stage, axial symmetric blower and portable ventilator

A blower (10) includes a housing (20) including a proximal opening (23) and a distal opening (25) that are co-axially aligned, a stator component (30) provided to the housing, an impeller (60) positioned between the proximal opening of the housing and the stator component, and a motor (40) adapted to drive the impeller. The impeller includes a plurality of impeller blades. The stator component includes a plurality of air directing grooves (35) along its exterior surface. The leading edge of the air directing grooves extend tangentially outwards from the outer tips of the impeller blades and are configured to collect the air exiting the impeller blades and direct it from a generally tangential direction to a generally radial direction by dividing the air from the impeller and directing the air along a curved path towards the distal opening so that airflow becomes substantially laminar.

Refrigerant compressor magnetic bearing

A magnetic bearing assembly includes a lamination stack with coil apertures extending between opposing sides. A continuous unitary insulation layer is overmoulded onto the opposing sides and within the coil apertures providing a coil aperture lining. The insulation layer includes a wall within the coil aperture adjoining coil aperture lining and bisecting the coil aperture into first and second openings. A coil portion is disposed in each of the first and second openings and electrically isolated from one another by the wall. The magnetic bearing assembly is arranged in a refrigerant compressor that includes an electric motor rotationally configured to rotationally drive an impeller via a shaft. A controller is in communication with the magnetic bearing and configured to energize the coils and provide a magnetic field rotationally supporting the shaft.

A METHOD IN CONNECTION WITH A REFRIGERATION APPARATUS AND A REFRIGERATION APPARATUS

Centrifugal blower system with internal gas mixing and gas phase chemical reactor incorporating same

A centrifugal blower system has internal gas mixing capability.

A window shutter unit for external mounting on a building

A window shutter unit (1) is for external mounting on a building. The window shutter unit comprises a plurality of hollow slats (2) mounted in a shutter frame. An air outlet opening (20) delivers ventilation air to a room in the building. A fresh air inlet system comprises air inlet openings (10) in the hollow slats (2), and a first air flow passage (8) from the individual slat to a common flow passage (9) leading to the air outlet opening (20). The shutter unit further comprises flow and temperature control devices, a heat exchange device and solar cell devices for producing electrical energy to drive electric fan motors in the window shutter.

Motor-compressor with stage impellers integrated in the motor-rotors

A shaftless motor-compressor (1) is disclosed, comprising a casing (3) and at least one compressor stage (9A, 9B) arranged in the casing. Each compressor stage comprises a respective impeller (11A, 11B) arranged for rotation in the casing (3) around a rotation axis (A-A). Each impeller (11A, 11B) is combined with an embedded electric motor (13A, 13B) housed in the casing (3) and comprised of a motor stator (15A, 15B) and a motor rotor (17A, 17B). The motor stator (15A, 15B) of each compressor stage (9A, 9B) circumferentially surrounds the impeller (11A, 1B) and the motor rotor (17A, 17B), integral with the impeller. The motor rotor (17A, 17B) of each stage (9A, 9B) is arranged inside the respective motor stator.

Flexible motor sleeve

Newness and distinctiveness is claimed in those visual features depicted in unbroken lines.

Motor housing

HEAT SINK SHIELD AND THERMOELECTRIC FAN WITH HEAT SINK SHIELD

A thermoelectric fan including: a heat collector; a thermoelectric generator (TEG) thermally coupled to the heat collector; a heat sink thermally coupled to the TEG and positioned to provide a temperature differential across the TEG; a motor in electrical communication with the TEG; a fan blade coupled to the motor and configured to generate a first airflow through the heat sink; and a heat sink shield configured to shield the heat sink from a second airflow, the second airflow having a higher temperature than the first airflow. The second airflow may be generated by the fan blade interacting with the first airflow. A heat sink shield for a thermoelectric fan wherein the heat sink shield is configured to attach to the thermoelectric fan and configured to at least partially shield the heat sink from a vorticity vector field and related air flows generated by the fan blade.

FAN MOTOR BEARING ASSEMBLY

ELECTRIC SUBMERSIBLE PUMPING UNIT

An electric submersible pump assembly with integral heat exchanger, high-speed selfaligning bearings, and dual bearing thrust chamber is described. The described pump assembly, modules, and components may be used for operating an electric submersible pump at high speeds as well as over a wide range of speeds and flowrates without replacing downhole equipment. The described pump assembly may be shorter than comparable pump assemblies and may be assembled offsite, thereby leading to faster and easier installation with less down time. By operating over a wide range of speeds, the disclosed pump assembly allows the operator to reduce overall inventory, reduce down time for the well, and avoid other complications associated with replacing a pump assembly or other downhole components.

METHOD AND APPARATUS FOR PROTECTION OF COMPRESSOR MODULES AGAINST INFLUX OF CONTAMINATED GAS

A method for protection of compressor modules against undesirable influx of contaminated gas, comprising a pressure housing (3) which by means of one of more sealing elements (4) is generally divided into a first compartment (8) equipped with a compressor (2) and a second compartment (7) equipped wit h a gas-filled motor (1), the compressor and the motor being drivably connec ted to each other by at least one shaft (9), is distinguished by protecting the second compartment (7) with motor (1) against direct influx of contamina ted gas from the first compartment (8) with compressor (2) by means of compr essed gas that is supplied from a withdrawal point (13) at the first or inte rmediate stage of the compressor, or from the compressor outlet (16), and by introducing the compressed gas directly into the seal (4) or in between two or more seals so as to flow through the at least one seal (4) back to the f irst compartment (8). The invention also relates to an apparatus for use in connection ...

METHODS AND APPARATUS FOR TRANSPORTING NATURAL GAS THROUGH A PIPELINE

A compressor assembly (200) for use in transporting natural gas is provided. The assembly includes a natural gas compressor (202) comprising at least one stage of compression, a permanent magnet-type super-synchronous motor (204) coupled to the natural gas compressor for powering said compressor, and a housing (230), the compressor positioned within the housing, and the compressor configured to facilitate increasing a pressure of natural gas being transmitted.

INFLATOR

An inflator tool includes a handle portion extending between a battery receiving portion and a tool head portion. The handle portion defines a longitudinal axis. The tool head portion includes an air inlet, a compression chamber, and an air outlet. A motor is at least partially supported within the handle portion and includes an output shaft. The air inlet defines an inlet axis, and the air outlet defines an outlet axis. The longitudinal axis is disposed at an oblique angle relative to each of the inlet axis and the outlet axis.

NON-BEAM PUMPING UNIT DRIVEN BY A BIAXIAL MOTOR

The utility belongs to the field of the non-beam pumping unit, specifically relating to a non-beam pumping unit driven by a biaxial motor. The non-beam pumping unit driven by a biaxial comprises a base, a tower body and a drive mechanism. The drive mechanism is mounted on the platform, comprising a biaxial motor, a large roller, a small roller, a belt and a counterweight device. The two ends of the biaxial motor are respectively connected with the two ends of the large roller through the chain and the sprocket respectively. The utility uses the biaxial motor instead of the uniaxial motor which in the prior art , the motor and the large roller on both sides are in balance, and solves the problem of partial grinding effectively and prolongs the service life of the bearing.

COMPRESSION METHOD AND AIR SEPARATION

A compression method, a multistage compression system and an air separation method and plant in which a gas is compressed in a series of compression stages to produce a compressed gas and each of the compression stages incorporate a variable speed compressor. In such compression method and system, the compressed air is produced at a pressure that remains stable during both normal operational conditions and during turn down conditions during which the flow rate of the gas is reduced. This reduction is accomplished by reducing the speed of the compressor in an initial compression stage such that the compressor operates at a point along its peak efficiency operating line at which the pressure ratio is directly proportional to the flow rate and such that the lower turn down flow rate is obtained at a reduced pressure which is made up in successive compression stages.

MICRO-FAN WITH IMPROVED SEAL FOR MEDICAL VENTILATOR AND ITS ASSEMBLY PROCESS

L' invention porte sur une micro-soufflante (1) comprenant un moteur électrique (2) à arbre rotatif (3) portant une roue à ailettes (4), ledit moteur électrique (2) étant compris dans un capotage (5) périphérique, ladite roue à ailettes (4) étant agencée entre une volute inférieure (6) et une volute supérieure (7), la volute inférieure (6) comprenant un passage central (8) venant ceinturer la surface périphérique (9) du capotage (5). Le capotage (5) du moteur comprend un rebord périphérique supérieur (10) se projetant radialement en éloignement par rapport à la surface périphérique externe (9) du capotage (5). Le passage central (8) de la volute inférieure (6) est bordé intérieurement par un épaulement annulaire (11), un joint d'étanchéité annulaire (14) étant agencé sur ledit épaulement annulaire (11). La volute inférieure (6) comprend en outre plusieurs butées internes (12) portées par la surface interne (13) de la volute inférieure (6). Le rebord périphérique supérieur (10) du capotage ...

COOLING MEANS FOR THE MOTOR OF A TURBOCOMPRESSOR

The turbocompressor (1) comprises an outwardly gas-tight housing (6) within which an electric motor (2) and also a multistage radial turbocompressor (3) are arranged on a common shaft (13) wherein, for the journalling of the shaft (13), electromagnetic radial bearings (5) are arranged spaced apart in the direction of its extent and wherein a gas seal (19) surrounding the shaft (13) is arranged between the electric motor (2) and the radial turbocompressor (3) in order to seal off the electric motor (2) with respect to the radial turbocompressor (3), wherein the electric motor (2) has an inner space (9b, 9c) which is connected in fluid conducting manner to an outlet opening (6h; 21) which passes through the housing.

Verfahren zum Verdichten eines kompressiblen Mediums und Maschine zum Ausüben des Verfahrens

Lageranordnung für Molekularpumpen und Turbomolekularpumpen

FAN WITH AN ENGINE AND A CONDENSER FOR THE PRODUCTION OF THE AUXILIARY PHASE.

DECOLLATOR FOR THE SEPARATION FROM PARTICLES FROM GASEOUS OR LIQUID MEDIA.

Pump assembly or axial flow turbine and electric machine.

Heat pump comprising a fluid compressor.

L’invention se rapporte à une pompe à chaleur (100) comprenant un compresseur de fluide (1) à deux étages comprenant un carter (2) présentant une entrée de fluide et une sortie de fluide comprimé et renfermant un arbre (7) monté en rotation autour d’un axe longitudinal, une première roue de compression et une seconde roue de compression montées dos à dos sur ledit arbre (7), ladite première roue de compression constituant un premier étage de compression et ladite seconde roue de compression constituant un second étage de compression, et un moteur positionné entre la première roue de compression et la seconde roue de compression et agencé pour mettre en rotation l’arbre (7). Le carter (2) comprend un logement intérieur (50) traversant s’étendant coxialement à l’axe longitudinal et dans lequel est disposé au moins le moteur, ledit logement intérieur (50) présentant une paroi intérieure (52) agencée pour former, avec le moteur, des canaux (54) entre au moins ladite paroi intérieure (52) et ...

A fuel cell comprising a fluid compressor.

L’invention se rapporte à une pile à combustible (100) comprenant un compresseur de fluide (1) à deux étages comprenant un carter (2) présentant une entrée de fluide et une sortie de fluide comprimé et renfermant un arbre (7) monté en rotation autour d’un axe longitudinal, une première roue de compression et une seconde roue de compression montées dos à dos sur ledit arbre (7), ladite première roue de compression constituant un premier étage de compression et ladite seconde roue de compression constituant un second étage de compression, et un moteur positionné entre la première roue de compression et la seconde roue de compression et agencé pour mettre en rotation l’arbre (7). Le carter (2) comprend un logement intérieur (50) traversant s’étendant coxialement à l’axe longitudinal et dans lequel est disposé au moins le moteur, ledit logement intérieur (50) présentant une paroi intérieure (52) agencée pour former, avec le moteur, des canaux (54) entre au moins ladite paroi intérieure (52) ...

DIAGONAL FAN

Turbocompressor assembly with a cooling system

Shield and coolant guide for an electric machine

The invention relates to shield and coolant guide for an electric machine. Peak performance of an electric motor can be enhanced by effective cooling of windings of the stator to avoid overheating. A liquid coolant is effective at cooling the stator; but in high-speed motors, it is advisable to avoid allowing coolant on the rotor to avoid high frictional losses. A shield provided in the air gap between the rotor and the stator guides the coolant back to a sump without gaining access to the rotor. Furthermore, if the electric machine is proximate a high temperature component, the shield may further prevent radiative and conductive heat transfer to the electric machine.

A centrifugal compressor

A compact and efficient compressor is provided, based on using magnetic bearing technology, which can operate at high speed and comprises a reliable control system. The compressor of the present invention makes use of two separate compressors mounted on a single common motor, thus sharing a single drive. The balancing of the thrust at high RPM is improved by using a pair of electromagnetic bearings.

Air supply device and dust collector

Vacuum pump

A vacuum pump 10 comprises a vacuum pumping mechanism 12 mounted for rotation by a shaft 14 and a brushless motor 16 for rotating the shaft. The vacuum pumping mechanism 12 comprises a turbo pumping mechanism 18 comprising a plurality of pumping stages, and a molecular drag pumping mechanism 20 comprising at least one pumping stage. Shaft 14 is supported for rotation by bearings 22. The motor 16 comprises a permanent magnet rotor 24 fixed relative to the shaft 14. The rotor 24 has four poles and a stator 26 has non-overlapping stator coils..

IRONLESS DC MOTOR, BRUSHLESS, HAS WAVE WINDING

Fan for respiratory assistance apparatus, has leak collection chamber provided with evacuation orifice, and placed between scroll and compartment, where chamber is traversed by shaft of electric motor, which has deflector unit

Ce ventilateur (1) comprend une volute (2) dont l'ouverture d'entrée (3) est en communication avec le conduit d'amenée d'oxygène, une roue à ailettes (4), située immédiatement en aval de l'ouverture d'entrée (3) de la volute (2), comprenant une ouverture d'entrée reliée à cette ouverture d'entrée (3) de la volute (2) et des orifices de sortie (4a) débouchant dans la volute (2), et un moteur électrique (5) d'entraînement de la roue (4) en rotation. Selon l'invention, le ventilateur (1) comprend : - un compartiment (6) dans lequel est placé le moteur (5) et éventuellement d'autres organes ou composants électriques que comprend le ventilateur (1), ce compartiment (6) comprenant une paroi d'extrémité (13) traversée par l'arbre du moteur (5) et étant alimenté en air sous pression, et - une chambre (7) de collecte de fuites, intermédiaire entre la volute (2) et ledit compartiment (6), également traversée par l'arbre du moteur (5), et comprenant un orifice d'évacuation (20).

BLOWER UNIT AND INSTALLATION OF HEATING, VENTILATION AND/OR BICYCLE HANDLEBARS CORRESPONDING

DEVICE AND METHOD FOR COMPRESSING AND REFRIGERATING MACHINE

Flat wall-mounted electric fan for electronic equipment - has resilient disc sealing end of channel formed through centre of rotor

Fixing for electric motor driven fan unit - has splined shaft carrying commutator stampings and fan boss

ELECTRIC COMPRESSOR WITH IMPROVED SEALING SYSTEM

La présente invention concerne un compresseur électrique (1) comportant un compartiment (5) moteur électrique dans lequel est disposé un moteur (51) électrique et un compartiment (8) électronique, dans lequel est disposé l'ensemble (81) électronique, les deux compartiments étant adjacents et en communication par deux ouvertures (55, 85) permettant le passage d'un élément (52) de connexion entre le moteur (51) électrique et l'ensemble (81) électronique, Le compresseur comportant au niveau des ouvertures (55, 85), un élément (10) d'étanchéité.

BEARING SEAL MEANS FOR AN ELECTRICALLY DRIVEN FAN

VENTILATOR FOR a DEHUMIDIFIER Of AIR

MOTOR VEHICLE COMPRISING A DEVICE FOR SUPERCHARGING AIR IN AN INTERNAL COMBUSTION ENGINE.

L'invention concerne un véhicule automobile comprenant un moteur à combustion interne (2) et un dispositif de suralimentation (1) en air du moteur à combustion interne (2), le dispositif de suralimentation (1) comprenant un compresseur électrique (6) et un circuit de refroidissement (41,42) du compresseur (6), ledit véhicule automobile comprenant en outre un circuit de climatisation (100), ledit circuit de refroidissement (41,42) étant couplé audit circuit de climatisation (100).

ELECTRIC COMPRESSOR

La présente invention concerne un compresseur électrique (1) comprenant au moins une roue (3) de compresseur entrainée par un ensemble moteur électrique (2) commandé par un ensemble électronique (9) et disposé dans un logement (4) moteur, l'ensemble électronique (9) est disposé à l'extérieur du logement (4) moteur, le logement (4) moteur formant au moins une partie d'une plaque arrière (31) de la roue (3) de compresseur.

브러시리스 모터 및 이의 제조방법

... 신뢰성 및 제조성을 향상시킨 브러시리스 모터 및 그 제조방법을 제공한다. 스테이터는 스테이터 코어(35), 스테이터 코어(35)에 부착된 절연체(36), 선재(37), 중간단자, 및 단자부를 구비한다. 선재(37)는 일방의 피권회부(63)에 일단측이 감기고 또한 타방의 피권회부(64)에 타단측이 감겨 스테이터 코어(35)의 일방 및 타방의 코어 티스부(45), (46)에 서로 극성이 다른 자극을 발생시키는 일방 및 타방의 코일(78), (79)을 각각 형성한다. 선재(37)는 양단부가 유지부(67)에 각각 유지되고, 일방 및 타방의 코일(78), (79)의 중간부가 중간 유지부(66)에 유지된다. 중간단자는 중간 유지부(66)에 설치되어 선재(37)와 전기적으로 접속된다. 단자부는 유지부(67)에 설치되어 선재(37)의 양단부와 전기적으로 접속된다.

CHARGING DEVICE OF A DRIVE ASSEMBLY

VENTILATEUR APPLICABLE POUR L'AERATION DE VEHICULES

Fan, control unit used for fans and fan control method

This invention mainly discloses a fan which is used to solve a problem of poor heat dissipation effect resulted from the conventional fan about abnormality. The fan of the invention comprises a stator magnetic pole provided for a fan wheel rotatably coupled to it and electrically connected to a driving unit to control a pole state of the stator magnetic pole to make the fan wheel be driven or braked by the stator magnetic pole, and a control unit is electrically connected to the driving unit and receives a speed control signal to drive the fan wheel and control a rotation speed of the fan wheel, then generates a braking signal based on the rotation speed or the speed control signal to brake the fan wheel. Thus, it can actually resolve said problem.

TURBOCOMPRESSOR SYSTEM

A turbocompressor system comprising a high speed motor (10) comprising a rotor (12) mounted in a rotative manner relative to the stator, whereby on said rotor (12) one or more impellers (11) are directly fixed, said stator comprising active motor structures and a shell (7), comprising a ferromagnetic stator core (6) and a winding being constructed as toroidally wound coils (5), said shell (7) being constructed in such a manner as to create additional open space between said stator core (6) and said shell (7), constituting a cooling channel (15) through which process gas is passed axially for directly cooling said active motor structures and the rotor (12), prior to compression by said one or more impellers (11).

EXTERNAL ROTOR 'AC' CONDENSER MOTOR AND CERAMIC ISOLATOR USED IN EXHAUST ASPIRATORS OF FLUE GAS IN HERMETIC COMBI BOILERS

The use of condenser 'AC motors for the exhaust of flue gas in hermetic combi boiler aspirators provide perfect combustion, efficiency, high power factor (Cos φ), and thus renders the aspirator an 'A' class product. Additional cooling units are not required. Ceramic plate (3) installed between motor housing (1 ) and the housing of the aspirator (6) provides vibration absorption and heat isolation, low malfunction rate, low noise and less connecting parts. All these factors contribute as low and shorter production time.

HIGH EFFICIENCY COOLING FAN

A cooling fan includes an impeller which comprises a plurality of radially extending blades, each of which includes a blade hub, a blade tip and a blade midspan approximately midway between the hub and the tip. In addition, each blade includes a camber of between about 60° and 90° at the blade hub, between about 15° and 40° at the blade midspan and between about 15° and 40° at the blade tip.

MOTOR PUMP WITH IMPELLER ROTOR

A motor equipment for various pumps, blowers, compressors, dust collectors, cleaners, etc. in which the fluid is sucked and/or discharged through an impeller. Since the conventional motor equipment of this kind consists of a combination of an equipment and a motor for driving the equipment in such a manner that the equipment obtains its power from the motor coupled with the equipment, it has such disadvantages as a large size, and difficulties in its airtight sealing particularly for the equipment necessary for high pressure in sucking or discharging fluid. This invention generally consists of a non-magnetic cylindrical tube (3) which is used as a part of a fluid conduit, a motor stator (4) attached onto the outer periphery of the tube (3), and a motor rotor (2) mounted within the tube (3), said motor rotor being provided with an impeller (1) at the center thereof, and said rotor (2) rotating by means of revolving magnetic field applied from the energized stator (4) within the tube (3) ...

MOTOR ASSEMBLY

A motor assembly of the present disclosure improves a combined structure between an impeller and a rotor to more firmly combine them. Furthermore, the impeller is combined with a rotor shaft without deformation, so the durability of the respective components may be improved.

FAN HOUSING FOR RAM AIR FAN

A fan housing has a radially outer surface. A pair of radially intermediate surfaces includes a first surface spaced towards a first axial end, which has an inner bore positioned radially outward of an inner bore of a second surface. Vanes extend between the radially outer surface and an outer periphery of the pair of radially intermediate surfaces. A bearing bore extends radially inwardly of the first surface. A mounting lug nub is formed on an outer periphery of the radially outer surface. A first distance is defined between the first axial one end of the fan housing and an opposed axial end. A second distance is defined between the first axial end and a center of the mounting lug. A ratio of the first distance to the second distance is between 2.13 and 2.11. An intermediate part, a ram air fan and a method are also disclosed.

Blower motor with flexible support sleeve

A double-ended blower includes a blower motor assembly supporting opposed first and second shaft ends. The first and second shaft ends have respective first and second impellers attached thereto and enclosed within first and second volutes, respectively. The first volute is connected to an inlet and the second volute is connected to an outlet. The blower motor assembly is at least partially enclosed within a flexible sleeve, with a radially outer inter-stage gas path extending between the first and second volute, and radially inward of the flexible sleeve.

RAM FAN DEVICE AND MOTOR COOLING SYSTEMS AND METHODS

A ram fan device includes a motor disposed in a housing that defines a motor cavity with a fan operatively connected to be driven by the motor and an outlet in fluid communication with the motor cavity. The housing includes a cooling inlet therethrough downstream of the fan and upstream of the motor, the cooling inlet being in fluid communication with the outlet through the motor cavity such that airflow can pass through the cooling inlet through the motor cavity and out the outlet.

BLOWER WITH BEARING TUBE

A method for forming windings of a stator assembly in a blower includes providing a stationary portion for the blower including a tube adapted to support a rotor and using the tube as a mandrel to form the windings of the stator assembly.

THREE-PHASE BRUSHLESS FAN

A three-phase brushless fan is disclosed. In the three-phase brushless fan, an outer shell member includes an axis part, and winding columns are disposed around the axis part, and the rotating module includes a fan, an axis coupling part pivoted to the axis part, and a magnetic element having south and north magnetic portions; a circuit board electrically connected to coils formed by winding a conductive wire on the winding columns. The number of the coils is three or a multiple of three, and the number of the coils is not equal a total amount of the south and north magnetic portions. As a result, winding the conductive wire to form the multiple coils can omit the operation of placing coils on the circuit board and save labor cost in welding two head ends of conductive wires on the circuit board one by one.

TURBOCOMPRESSOR ASSEMBLY WITH A COOLING SYSTEM

A turbocompressor assembly is provided, which is divided along a rotor axis into at least three sections. The three sections include a bearing section having an active magnetic bearing, a motor section including a motor having a stator arranged along the rotor axis, the stator enclosing a circumferential motor gap formed between the stator and the rotor, and a compressor section having a compressor for compressing a cooling fluid. A gas-tight housing encloses the rotor, the bearing section, the motor section and the compressor section. A cooling system is provided having an inlet for supplying the pressurized cooling fluid to the bearing section and the motor section through a fluid channel positioned between the bearing section and the motor section. The cooling system includes a throttling device positioned adjacent to the motor gap for limiting the flow of cooling fluid from the fluid channel to the motor gap.

Motor-Driven Fan With Trapped Adhesive for Minimizing Vibration

HVLP (High Velocity Low Pressure) motor-driven fans and other types of fans, blowers and vacuums take advantage of different thermal and mechanical properties of dissimilar materials used in the motor-driven fans. The dissimilar materials include aluminum for a stacked arrangement of fan wheels and spacers, steel for a shaft that supports the fan wheels and spacers, and a polymeric adhesive. In some examples, the polymeric adhesive is trapped between the aluminum and steels parts. Compared to steel and aluminum, the adhesive has a relatively high coefficient of thermal expansion but relatively low strength such that thermal expansion of the adhesive exerts additional clamping pressure during startup and during high temperature operation. The additional clamping pressure reduces vibration and eliminates other causes of fan or motor failure.

Axial flow heat exchanger devices and methods for heat transfer using axial flow devices

Systems and methods described herein are directed to rotary heat exchangers configured to transfer heat to a heat transfer medium flowing in substantially axial direction within the heat exchangers. Exemplary heat exchangers include a heat conducting structure which is configured to be in thermal contact with a thermal load or a thermal sink, and a heat transfer structure rotatably coupled to the heat conducting structure to form a gap region between the heat conducting structure and the heat transfer structure, the heat transfer structure being configured to rotate during operation of the device. In example devices heat may be transferred across the gap region from a heated axial flow of the heat transfer medium to a cool stationary heat conducting structure, or from a heated stationary conducting structure to a cool axial flow of the heat transfer medium.

Blower

A blower includes an air pump and a motor. The pump includes an impeller and a casing housing the impeller. The casing includes a casing inlet through which air is drawn in and a casing outlet through which the air is expelled by the impeller. The motor is arranged at the casing outlet and includes a stator and a rotor. The stator includes a stator core and a plurality of coils. The stator core includes a substantially ring-shaped yoke and a plurality of teeth extending inwards from the yoke. Each coil is wound around the yoke and is partially sandwiched between two adjacent teeth. The impeller is driven by the rotor.

Centrifugal fan

A centrifugal fan includes an upstream side impeller, a downstream side impeller, a motor, and a housing arranged to accommodate the upstream side impeller, the downstream side impeller, and the motor. The housing includes a first intake port through which a gas is drawn from an outside, an exhaust port through which the gas is discharged to the outside, and a flow path defined within the housing to bring the first intake port and the exhaust port into communication with each other. The flow path includes a first wind tunnel portion positioned below the upstream side impeller to extend in a circumferential direction and arranged to receive a gas stream from the upstream side impeller and a second wind tunnel portion positioned above the downstream side impeller to extend in the circumferential direction and arranged to receive a gas stream from the downstream side impeller.

Ultra high pressure turbomachine for waste heat recovery

A turbine-driven alternator (i.e., a turbomachine) suitable for generating electrical power from process gas waste energy. In particular suitable for very high density process gases such as super critical CO2, R134a, R245fa, etc. The turboalternator comprises two separate machines, specifically, a turbine device and an alternator device operatively connected together by a coupling shaft. The rotating shaft assemblies for each machines on the turbine side and the alternator side are supported by hydrodynamic foil gas bearings. The foil gas bearings use process gas at the turbine side, enabling high-pressure operation (˜3000 psia) and thrust load balancing. At the alternator side, cooling fluid is used in the foil gas bearings, enabling high-speed (˜40,000 rpm), low-windage, oil-free operation with closed-loop shaft cooling.

COMPRESSOR MOTOR AND ELECTRIC COMPRESSOR INCLUDING THE SAME

Provided is a compressor motor that can achieve reduction in length of a motor lead wire, compactification of a motor housing, and reduction in size and weight of an electric compressor, and also provided is an electric compressor including the compressor motor. A cluster block () that is connected to a stator coil end of a motor () via a motor lead wire is placed in an outer circumferential region of a stator coil end cover () or a bobbin (A) of the motor () such that a terminal connection port of the cluster block () faces an outer circumferential side. An opening () and a placement bearing surface () for inserting and placing a hermetic terminal () are provided in an outer circumferential region of a motor housing (), the outer circumferential region facing the cluster block () provided on the motor () side. The hermetic terminal () is inserted and placed from an outer circumferential side of the motor housing () to the opening () and the placement bearing surface (), to be thereby made directly connectable to the terminal connection port of the cluster block (). 1. A compressor motor that is placed in a motor housing and receives electric power applied from an outside via a hermetic terminal , whereina cluster block that is connected to a stator coil end of the motor via a motor lead wire is placed in an outer circumferential region of a stator coil end cover or a bobbin of the motor such that a terminal connection port of the cluster block faces an outer circumferential side,an opening and a placement bearing surface for inserting and placing the hermetic terminal are provided in an outer circumferential region of the motor housing, the outer circumferential region facing the cluster block provided on the motor side, andthe hermetic terminal is inserted and placed from an outer circumferential side of the motor housing to the opening and the placement bearing surface, to be thereby made directly connectable to the terminal connection port of the cluster block.2 ...

Thin fan and manufacturing method thereof

A manufacturing method of a thin fan comprises the steps of: providing a plastic material containing a plurality of metal particles; molding the plastic material into a housing; removing a part of a surface of the housing to form a circuit layout area at the housing; and forming a metal layer in the circuit layout area.

Fuel cell system, motor, air compressor, pump, and method of designing motor

A fuel cell system includes a fuel gas supply/discharge mechanism, an oxidative gas supply/discharge mechanism, and a coolant circulation mechanism that cools a fuel cell. A motor employed in an air compressor of the fuel gas supply/discharge mechanism includes a generally circular cylindrical rotor. The axial length of the rotor is related to its diameter such that the ratio is approximately equal to a maximum value satisfying a relationship: Ta≦Tm, where Ta denotes a permissible torque of the motor, and that Tm denotes a maximum torque for which a request is to be made to the motor.

MULTIPLE MOTOR DRIVERS FOR A HERMETICALLY-SEALED MOTOR-COMPRESSOR SYSTEM

A fluid compression system is disclosed having a hermetically-sealed housing with at least two motors and a compressor arranged therein. The motors may be arranged either on both sides of the compressor or in a tandem configuration on one side of the compressor. The motors may be adapted to drive both the compressor and at least one blower device coupled to a free end of shaft that extends through the housing, the blower device being configured to circulate a cooling fluid throughout the housing and thereby cool the motors and any accompanying radial/axial bearings. 1. A fluid compression system , comprising:a hermetically-sealed housing having a multi-section shaft extending from a first end of the housing to a second end of the housing;a compressor arranged within the housing and including a driven section of the shaft;a first motor being disposed within the housing axially-adjacent the compressor at the first end, the first motor including a first motor rotor section of the shaft;a second motor disposed within the housing axially-adjacent the compressor at the second end, the second motor including a second motor rotor section of the shaft, wherein the first and second motor rotor sections are coupled to the driven section at opposing ends such that the motors are configured to simultaneously drive the driven section of the shaft and thereby rotate the compressor;radial bearings disposed proximal each end of the first and second motor rotor sections and each end of the driven section, the radial bearings being in fluid communication with at least one internal cooling passage defined within the housing; anda first impeller coupled to a free end of the second motor rotor section of the shaft, whereby rotation of the second motor rotor section drives the first impeller and circulates a cooling fluid in a closed cooling loop through internal cooling passages defined within the housing.2. (canceled)3. The fluid compression system of claim 1 , further comprising a ...

Compressor Windage Mitigation

A compressor () has a housing assembly () with a suction port (), a discharge port (), and a motor compartment (). An electric motor () has a stator () within the motor compartment and a rotor () within the stator. The rotor is mounted for rotation about a rotor axis (). One or more working elements () are coupled to the rotor to be driven by the rotor in at least a first condition so as to draw fluid in through the suction port and discharge the fluid from the discharge port. A gap () is between the rotor and stator. The gap is isolated () from an outer portion () of the motor compartment. The outer portion is exposed to the stator. One or more passages () are positioned to draw fluid from the gap in the first condition. 122. A compressor () comprising:{'b': 40', '24', '26', '60, 'a housing assembly () having a suction port () and a discharge port () and a motor compartment ();'}{'b': 42', '62', '64', '500, 'an electric motor () having a stator () within the motor compartment and a rotor () within the stator, the rotor being mounted for rotation about a rotor axis ();'}{'b': '44', 'one or more working elements () coupled to the rotor to be driven by the rotor in at least a first condition so as to draw fluid in through the suction port and discharge said fluid out from the discharge port;'}{'b': '80', 'a gap () between the rotor and stator;'}{'b': 140', '142', '144, 'means for (, ) isolating said gap from an outer portion () of the motor compartment, said outer portion exposed to the stator; and'}{'b': '150', 'one or more passages () positioned to draw fluid from the gap in the first condition.'}2. The compressor of wherein:the one or more passages are further positioned to pass said fluid from the gap to a suction housing plenum.3. The compressor of wherein:one or more additional passages are positioned to pass said fluid from the outer portion of the motor compartment to the gap.4. The compressor of wherein:the one or more additional passages comprise a leakage ...

FAN MOTOR

Disclosed is a fan motor including: a lower bracket having a lower protruding portion disposed at the center thereof and a space portion formed around the lower protruding portion; an upper bracket having an upper protruding portion disposed at the center thereof; a rotor disposed between the lower protruding portion and the upper protruding portion in such a manner as to be rotated together with a shaft; a stator core adapted to be surrounded with a lower insulator disposed on the top of the lower protruding portion and with an upper insulator disposed on the underside of the upper protruded portion; and a PCB cover adapted to be coupled under the lower insulator in such a manner as to be disposed into the space portion of the lower bracket and having a PCB insertion space portion formed at the inside thereof. 1. A fan motor comprising:{'b': 1', '11', '15', '11', '11', '12, 'a lower bracket having a lower protruding portion disposed at the center thereof and a space portion formed around the lower protruding portion , the lower protruding portion having a lower bearing insertion portion formed at the inside thereof;'}{'b': 2', '21', '21', '22, 'an upper bracket having an upper protruding portion disposed at the center thereof, the upper protruding portion having an upper bearing insertion portion formed at the inside thereof;'}{'b': 4', '11', '21', '3, 'a rotor disposed between the lower protruding portion and the upper protruding portion in such a manner as to be rotated together with a shaft ;'}{'b': 5', '51', '11', '52', '21, 'a stator core adapted to be surrounded with a lower insulator disposed on the top of the lower protruding portion and with an upper insulator disposed on the underside of the upper protruded portion ; and'}{'b': 6', '51', '15', '1', '62, 'a PCB cover adapted to be coupled under the lower insulator in such a manner as to be disposed into the space portion of the lower bracket and having a PCB insertion space portion formed at the inside ...

FAN MOTOR STRUCTURE

Disclosed herein is a fan motor structure including: a shaft; a bearing member coupled to the shaft; a stator coupled to the shaft and disposed at one side of the bearing member; an impeller having a coupling hole and a space part formed therein so as to be in communication with each other, the coupling hole having the bearing member coupled thereto and the space part having the stator received therein; a yoke formed on an inner peripheral surface of the space part; a magnet formed on an inner peripheral surface of the yoke; a diffuser to which an end portion of the shaft is fixed; and a cover coupled to the diffuser and covering the impeller. According to a preferred embodiment of the present invention, a size of the fan motor is decreased. 1. A fan motor structure comprising:a shaft;a bearing member coupled to the shaft;a stator coupled to the shaft and disposed at one side of the bearing member;an impeller having a coupling hole and a space part formed therein so as to be in communication with each other, the coupling hole having the bearing member coupled thereto and the space part having the stator received therein;a yoke formed on an inner peripheral surface of the space part;a magnet formed on an inner peripheral surface of the yoke;a diffuser to which an end portion of the shaft is fixed; anda cover coupled to the diffuser and covering the impeller.2. The fan motor structure as set forth in claim 1 , wherein relative rotation of the shaft with respect to the diffuser is not allowed.3. The fan motor structure as set forth in claim 1 , wherein the bearing member includes a bearing including inner and outer races claim 1 ,the inner race is fixed to the shaft, such that relative rotation thereof with respect to the shaft is not allowed, andthe outer race is coupled to the coupling hole, such that it rotates integrally with the impeller.4. The fan motor structure as set forth in claim 1 , wherein the bearing member includes two bearings disposed to be adjacent ...

Window shutter unit for external mounting on a building

A window shutter unit ( 1 ) is for external mounting on a building. The window shutter unit comprises a plurality of hollow slats ( 2 ) mounted in a shutter frame. An air outlet opening ( 20 ) delivers ventilation air to a room in the building. A fresh air inlet system comprises air inlet openings ( 10 ) in the hollow slats ( 2 ), and a first air flow passage ( 8 ) from the individual slat to a common flow passage ( 9 ) leading to the air outlet opening ( 20 ).

SWITCHED RELUCTANCE MOTOR ASSEMBLY

Disclosed herein is a switched reluctance motor assembly capable of reducing an assembling error that is generated according to separate assembling and improving precision of assembling of bearing parts by forming a diffuser part and a motor housing integrally with each other. In the switched reluctance motor assembly, the diffuser is coupled integrally with the housing, such that a separate member for fixing the diffuser is omitted, thereby making it possible to reduce vibration according to driving of a motor and noise according to the vibration. 1. A switched reluctance motor assembly comprising:a shaft forming the center of rotation of a motor;a rotor part rotatably coupled to the shaft;a first stopper coupled to an upper portion of the rotor part in an axial direction to support the rotor part;a second stopper coupled to a lower portion of the rotor part in the axial direction to support the rotor part;a first bearing part coupled to an upper portion of the first stopper in the axial direction;a second bearing part coupled to a lower portion of the second stopper in the axial direction;a diffuser part supporting the first bearing part and coupled to an upper end of the first stopper; anda motor housing formed integrally with the diffuser part and receiving the first and second bearing parts therein.2. The switched reluctance motor assembly as set forth in claim 1 , wherein the rotor part includes an annular rotor core and a plurality of rotor poles protruded outwardly from the rotor core.3. The switched reluctance motor assembly as set forth in claim 1 , wherein the first stopper is formed as a balancing member for maintaining rotation balance of a switched reluctance motor.4. The switched reluctance motor assembly as set forth in claim 1 , further comprising a stator part including a stator yoke receiving the rotor part therein and stator salient poles formed to be spaced apart from the rotor poles so as to correspond to the rotor poles and formed to be ...

Blower for breathing apparatus

A blower for a breathing apparatus has a diffuser for increasing static pressure and/or reducing noise and/or mitigating pressure instabilities and/or managing reverse flow.

FAN COMPRISING NANO-BEARING

A fan including: a fan frame, a casing, fan blades, a magnetic piece, silicon steel sheets, a coil, a circuit board, a nano-bearing, and a rotational shaft of a motor. The fan frame is disposed at a bottom of the fan. The casing is disposed above the fan frame. The fan blades encircle the casing and are staggered with respect to one another. The magnetic piece is in a ring shape and is attached to an inner wall of the casing. The silicon steel sheets are stacked together, and disposed in a circle inside the magnetic piece. The coil is wound on the silicon steel sheets. The nano-bearing is disposed in a center of the silicon steel sheets. The rotational shaft of the motor is disposed inside the nano-bearing. The circuit board is connected to the coil wound on the silicon steel sheets. 2. The fan of claim 1 , wherein the nano-bearing comprises an outer ring and an inner ring;the inner ring comprises: an upper ring-shaped structure, a lower ring-shaped structure, and an accommodating chamber;the upper ring-shaped structure and the lower ring-shaped structure are discontinuously arranged;the accommodating chamber is disposed in a middle part of the inner ring between the upper ring-shaped structure and the lower ring-shaped structure;an oil storing cotton is disposed inside the accommodating chamber; andthe outer ring and the inner ring are made of nano-materials.3. The fan of claim 1 , wherein the nano-bearing is made of a nano-ceramic material claim 1 , a nano-silicon carbide material claim 1 , a nano-zirconia material claim 1 , or a nano-silicon nitride.4. The fan of claim 2 , wherein the nano-bearing is made of a nano-ceramic material claim 2 , a nano-silicon carbide material claim 2 , a nano-zirconia material claim 2 , or a nano-silicon nitride.5. The fan of claim 1 , wherein nano-wear resistant layers are attached to an inner wall of the outer ring and/or an outer wall of the inner ring.6. The fan of claim 2 , wherein nano-wear resistant layers are attached to an ...

MICRO FAN

A micro fan is provided. The micro fan includes a rotor and a stator. The stator includes an axial induced coil unit and a circuit board. The axial induced coil unit is made by twining a coil in an axial direction for at least two layers and in a radial direction for at least two layers. 1. A micro fan , comprising:a rotor; anda stator, comprising an axial induced coil unit and a circuit board, wherein the axial induced coil unit is made by twining a coil in an axial direction for at least two layers and in a radial direction for at least two layers,wherein an end contact of the axial induced coil unit, which is connected to one end of the coil, is cut from a lead frame,wherein the axial induced coil unit generate an magnetic force to rotate the rotor,wherein the stator has a stator coil magnetic pole, and the stator coil magnetic pole provides a magnetic attraction force and a magnetic repulsion force alternately toward rotor magnets of the rotor to rotate the rotor.2. A micro fan , comprising:a rotor; anda stator, comprising an axial induced coil unit and a circuit board, wherein the axial induced coil unit is made by twining a coil into a flat-shaped bundle,wherein an end contact of the axial induced coil unit, which is connected to one end of the coil, is cut from a lead frame,wherein the axial induced coil unit generate an magnetic force to rotate the rotor,wherein the stator has a stator coil magnetic pole, and the stator coil magnetic pole provides a magnetic attraction force and a magnetic repulsion force alternately toward rotor magnets of the rotor to rotate the rotor.3. A micro fan , comprising:a rotor; anda stator, comprising an axial induced coil unit and a circuit board, wherein the stator is produced by the following steps:providing the axial induced coil unit;directly mounting the axial induced coil unit on the circuit board by surface mount technology, and the axial induced coil unit is a magnetic pole unit of the stator,wherein an end contact of ...

CENTRIFUGAL FAN

A valve device for a cooling water system of a motor vehicle, with a housing including a first connection and a second connection for a first liquid circuit, and a third connection and a fourth connection for a second liquid circuit, wherein the first connection is permanently fluidically connected to the second connection, and with a valve unit including a movably mounted valve element with which a thermally activatable spring element is associated, and which opens a connection between the third connection and the fourth connection in a first end position and cuts off the connection in a second end position. The thermally activatable spring element is arranged in a chamber located between the first connection and the second connection, which is permanently cut off from the third and the fourth connection and which preloads the valve element in the direction of the second end position. 1. A centrifugal fan comprising:a resin upper casing,a resin lower casing,an impeller,a motor, anda circuit board,wherein the impeller, the motor and the circuit board are housed between the resin upper casing and the resin lower casing,ribs are formed at a bottom surface of the lower casing,the lower casing includes primary pins for fixing the circuit board to the lower casing, andthe primary pins are reinforced by the rib.2. The centrifugal fan according to claim 1 , wherein the ribs include primary ribs extending along a radial direction and secondary ribs extending along a circumferential direction claim 1 , andeach of the primary pins is provided in a standing manner at a part where the primary rib and the secondary rib intersect.3. The centrifugal fan according to claim 2 , wherein the lower casing includes a circular protruding part reinforced by the primary ribs claim 2 , anda hollow cylindrical bearing holder, rotatably holding a shaft, which is a rotating axis of the impeller, is held in the circular protruding part.4. The centrifugal fan according to claim 3 , wherein each ...

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 ...

Motor with Inner Fan

A motor with an inner fan includes a rotor rotating with a shaft, a stator opposing the outer peripheral surface of the rotor, an end ring connected to the rotor, stator wiring connected to the stator, a fan rotating with the shaft through a sleeve, a fan guide opposing the tip end of the blade outer periphery of the fan, and a frame storing the rotor, the stator, the fan, the fan guide, the end ring, and the stator wiring. The rotor includes an axial duct penetrating the rotor in the axial direction of the rotor and a radial duct communicating with the axial duct and penetrating the rotor radially from the inside to the outside of the rotor. The fan is an inner fan arranged inside the frame, the inner fan is of a diagonal flow type, and the discharge direction of the inner fan is the inward direction. 1. A motor with an inner fan , comprising:a rotor that rotates with a shaft;a stator that opposes the outer peripheral surface of the rotor;an end ring that is connected to the rotor;stator wiring that is connected to the stator;a fan that rotates with the shaft through a sleeve;a fan guide that opposes the tip end of the blade outer periphery of the fan; anda frame that stores the rotor, the stator, the fan, the fan guide, the end ring, and the stator wiring,wherein the rotor includes an axial duct and a radial duct, the axial duct penetrating the rotor in the axial direction of the rotor, the radial duct communicating with the axial duct and penetrating the rotor radially from the inside to the outside of the rotor,the fan is an inner fan that is arranged inside the frame,the inner fan is of a diagonal flow type, andthe discharge direction of the inner fan is the inward direction.2. The motor according to claim 1 ,wherein the fan guide is of a double structure,the outside diameter side of the fan guide is arranged along a tip end part of a blade outer periphery of the inner fan, andthe inside diameter side of the fan guide is arranged along an outside diameter side ...

Motor having cooling means

A motor has a stator and a rotor rotating at the center of the stator, and the rotor includes a concave groove formed with a predetermined depth along the circumference of the rotor, and a plurality of blades formed at the concave groove to protrude therein and having a height not greater than the depth of the concave groove, wherein a flow channel is formed between the stator and the rotor along the length direction of the rotor so that air flows therein, and wherein when the rotor rotates, the plurality of blades guides an air flow to the flow channel so that the rotor is cooled.

ELECTRICALLY DRIVEN PUMP

An electrically driven pump is provided, which includes an impeller. The impeller includes an upper plate, blades and a lower plate. The blades are formed on a lower surface of the upper plate, the blades include first blades and second blades, and a length of each of the first blades is greater than a length of each of the second blades. The first blades are uniformly distributed along a circumference of the upper plate. The first blades and the second blades are distributed alternately in the circumferential direction. The first blades each include a first head portion and a first tail portion, the second blade includes a second head portion and a second tail portion, and the first tail portion and the second tail portion are aligned with outer edge of the upper plate. The impeller arranged in such manner facilitates the improvement of hydraulic efficiency and lift. 1. An electrically driven pump , comprising a rotor assembly , a stator assembly , and a partition , wherein the rotor assembly and the stator assembly are partitioned by the partition , the rotor assembly comprises an impeller , the impeller comprises an upper plate , blades and a lower plate , the blades are provided between the upper plate and the lower plate , and the upper plate comprises an upper surface and a lower surface , wherein ,the blades and the upper plate are integrally formed by injection molding, the blades are located on the lower surface of the upper plate, the blades comprise first blades and second blades, and each of the first blades and the second blades comprises a camber, or a combination of two or more than two cambers, or a combination of a camber and a plane;a length of each of the first blades is greater than a length of each of the second blades, the first blades are uniformly distributed along a circumference of the upper plate, and the second blades are uniformly distributed along the circumference of the upper plate;a number of the first blades is the same as a number ...

ADHESIVE JOINT FEATURES

A fan assembly having a reduced dimension formed by several modifications is described. The fan assembly includes a stator having stator coils positioned within a recessed portion of a pillow that receives the motor. The stator may include wire connections positioned between adjacent stator coils and designed to terminate wires of the stator coils. The wire terminations may be on a protrusion or a post positioned between adjacent stator coils, or alternatively, the wire terminations may be disposed on protruding features of a bushing. The protrusion may be formed from an electrically conductive material and electrically connected to a motor control circuit via a flexible printed circuit. In some embodiments, the protrusion is part of an electrically neutral stator bushing having several pins. Also, a gap region between the bushing and a flange feature is designed to improve an adhesive joint. 1. A fan assembly , comprising:a bushing including a channel; anda pillow having a flange feature extending into the channel, the flange feature including a first axial surface separated from a first surface of the channel by a first gap distance and a second axial surface separated from a second surface of the channel by a second gap distance different from the first gap distance, the second surface different from the first surface.2. The fan assembly of claim 1 , wherein the second gap distance is greater than the first gap distance.3. The fan assembly of claim 2 , further comprising an adhesive joint comprising an adhesive disposed in the channel claim 2 , the adhesive including a first thickness corresponding to the first gap distance and a second thickness corresponding to the second gap distance.4. The fan assembly of claim 3 , wherein:the pillow further comprises a second flange feature,the bushing further comprises a shoulder portion positioned between the flange feature and the second flange feature, andthe adhesive extends from the channel to a location between the ...

ELECTRIC SUBMERSIBLE PUMPING UNIT

An electric submersible pump assembly with integral heat exchanger, high-speed self-aligning bearings, and dual bearing thrust chamber is described. The described pump assembly, modules, and components may be used for operating an electric submersible pump at high speeds as well as over a wide range of speeds and flowrates without replacing downhole equipment. The described pump assembly may be shorter than comparable pump assemblies and may be assembled offsite, thereby leading to faster and easier installation with less down time. By operating over a wide range of speeds, the disclosed pump assembly allows the operator to reduce overall inventory, reduce down time for the well, and avoid other complications associated with replacing a pump assembly or other downhole components. 1a head module;a power module;a base module;and a single-piece housing coupling comprising a first end and a second end, the first end of the single-piece housing coupling comprising threads which turn in a first direction, the second end of the single-piece housing coupling comprising threads which turn in a second direction, wherein the base module is joined directly to the power module using the single-piece housing coupling.. A motor for an electrical submersible pump assembly, the motor comprising: This application is a continuation of U.S. Ser. No. 16/780,089, filed Feb. 3, 2020 and allowed Jul. 30, 2020, which is a continuation of Ser. No. 16/282,831 filed Apr. 24, 2019 which claims priority to U.S. Provisional Application No. 62/634,423 filed Feb. 23, 2018, the disclosures of which are incorporated herein by reference.The present inventions are directed to electric submersible pump assemblies for wells and in particular to high-speed components related to electric submersible pumps.Electric Submersible Pumps (ESP) are widely used in the production of fluid from oil and gas wells. Traditional ESPs have a centrifugal pump coupled to an electric motor. The motor is typically protected ...

FAN MOTOR AND MANUFACTURING METHOD THEREOF

Disclosed is a fan motor. The present disclosure provides a fan motor including a motor housing receiving a motor therein, a motor bracket disposed on the motor housing, an impeller coupled to a shaft of the motor, and a diffuser disposed between the motor and the impeller and having a vane body, an axial flow vane provided to an inner circumference of the vane body, and a diagonal flow vane provided above the axial flow vane. 1. A fan motor , comprising:a motor housing;a motor disposed within the motor housing;a motor bracket disposed on the motor housing;an impeller coupled to a shaft of the motor; and a vane body,', 'an axial flow vane disposed at an inner circumference of the vane body, and', 'a diagonal flow vane disposed vertically above the axial flow vane., 'a diffuser disposed between the motor and the impeller, the diffuser comprising2. The fan motor of claim 1 , wherein the vane body comprises a hollow ring claim 1 , and the axial flow vane is disposed at an inner surface of the hollow ring.3. The fan motor of claim 2 , wherein the vane body claim 2 , the axial flow vane claim 2 , and the diagonal flow vane are integrally provided.4. The fan motor of claim 3 , wherein the vane body claim 3 , the axial flow vane claim 3 , and the diagonal flow vane are made by injection molding.5. The fan motor of claim 4 , wherein the diffuser further comprises a hub that is disposed within the vane body claim 4 , andwherein an outer circumference of the hub corresponds to a shape of the diagonal flow vane.6. The fan motor of claim 5 , wherein the vane body defines an indentation claim 5 , and the motor bracket comprises a fitted part inserted into the indentation.7. The fan motor of claim 6 , wherein the indentation comprises at least one of a first indentation that extends along a circumferential direction of the vane body or a second indentation that extends along an axial direction of the vane body claim 6 , andwherein the fitted part comprises at least one of a first ...

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).

IMPELLER INTEGRATED MOTOR FOR CENTRIFUGAL COMPRESSOR

An impeller of a centrifugal compressor comprising an impeller body () rotatable about an impeller axis Wand a motor operable to drive said impeller about said impeller axis. The motor includes a stator assembly () and a rotor assembly (). The rotor assembly is associated with said impeller body. 1. An impeller of a centrifugal compressor comprising:an impeller body rotatable about an impeller axis; anda motor operable to drive said impeller about said impeller axis, said motor including a stator assembly and a rotor assembly, said rotor assembly being associated with said impeller body.2. The compressor of claim 1 , wherein said rotor assembly further comprises at least one interactive component configured to interact with a magnetic field generated by said stator assembly to drive said impeller about said impeller axis.3. The compressor of claim 2 , wherein said at least one interactive component is not coupled to an electrical source separate from said stator assembly.4. The compressor of claim 2 , wherein said at least one interactive component is integrally formed with said impeller body.5. The compressor of claim 2 , wherein said at least one interactive component is removably coupled to said impeller body.6. The compressor of claim 2 , wherein said at least one interactive component is coupled to an exterior surface of said impeller body.7. The compressor of claim 2 , wherein said at least one interactive component is at least partially embedded within said impeller body.8. The compressor of wherein said at least one interactive component comprises a plurality of interactive components positioned about a periphery of said impeller body.9. The compressor of claim 2 , wherein said stator assembly includes at least one electrical component operable to generate a magnetic field when power is applied thereto.10. The compressor of claim 9 , further comprising a shroud arranged adjacent said impeller body claim 9 , said stator assembly being associated with said ...

STACKING-TYPE STATOR USING MULTILAYER PRINTED CIRCUIT BOARD, AND SINGLE-PHASE MOTOR AND COOLING FAN USING SAME

Provided is a stacking-type stator using a multilayer printed circuit board (PCB) in which torque generation can be maximized in an opposite rotor, and a single-phase motor and a cooling fan both using the same. The stacking-type stator includes: a multilayer printed circuit board (PCB) that is stacked and integrated with a penetration opening; and a coil pattern patterned on each layer of the multilayer PCB, wherein throughholes are formed to penetrate the multilayer PCB and connect the coil patterns, wherein the coil pattern comprises: inner and outer rotating direction pattern portions which are arranged in a circumferential direction at intervals along an inner circumference and an outer circumference concentrically with the penetration opening; and a radial pattern portion that interconnects the inner rotating direction pattern portion and the outer rotating direction pattern portion that are adjacent to each other and is disposed along the radial direction. 1. A stacking-type stator for a single-phase motor , the stacking-type stator comprising:a multilayer printed circuit board (PCB) that is stacked and integrated with a penetration opening; anda coil pattern patterned on each layer of the multilayer PCB,wherein throughholes are formed to penetrate the multilayer PCB and connect the coil patterns,wherein the coil pattern comprises:inner and outer rotating direction pattern portions which are arranged in a circumferential direction at intervals along an inner circumference and an outer circumference concentrically with the penetration opening; anda radial pattern portion that interconnects the inner rotating direction pattern portion and the outer rotating direction pattern portion that are adjacent to each other and is disposed along the radial direction.2. The stacking-type stator for a single-phase motor of claim 1 , whereinthe coil pattern is patterned in a spiral pattern so that protrusions and recesses are repeated along the perimeter of the penetration ...

THERMALLY PROTECTED MOTOR/GENERATOR FOR GAS TURBINE ENGINE

A turbofan engine includes a main engine shaft rotatable about an engine axis. A bearing assembly supports rotation of the main engine shaft. A bearing compartment defines an enclosed space around the bearing assembly. An electric machine is supported within the bearing compartment and coupled to the main engine shaft. A turbofan engine assembly and a method are also disclosed. 1. A turbofan engine comprising:a main engine shaft rotatable about an engine axis;a bearing assembly supporting rotation of the main engine shaft;a bearing compartment defining an enclosed space around the bearing assembly; andan electric machine supported within the bearing compartment and coupled to the main engine shaft.2. The turbofan engine as recited in claim 1 , wherein the bearing compartment is disposed within a turbine exhaust case.3. The turbofan engine as recited in claim 2 , wherein the main engine shaft comprises a shaft coupled to an aft most turbine section.4. The turbofan engine as recited in claim 3 , wherein the bearing assembly comprises a forward bearing spaced axially apart from an aft bearing.5. The turbofan engine as recited in claim 2 , including a supply conduit that extends at least partially through the turbine exhaust case and includes a lubricant passage communicating lubricant to the bearing assembly and electric machine within the bearing compartment.6. The turbofan engine as recited in claim 5 , wherein an electric power cable is routed through the supply conduit and at least partially surrounded by the lubricant passage.7. The turbofan engine as recited in claim 6 , wherein the electric power cable is disposed along a centerline of the supply conduit and the lubricant passage is disposed at least partially around the electric power cable.8. The turbofan engine as recited in claim 7 , wherein the lubricant passage comprises a least lubricant supply passage and a lubricant return passage.9. The turbofan engine as recited in claim 2 , including a transmission ...

Subsea compressor directly driven by a permanent magnet motor with stator and rotor submerged in liquid

The present invention regards a compressor system comprising a compressor unit ( 1 ) and a motor unit ( 2 ) arranged on bearings ( 4, 5, 6 ), where motor and bearings are submerged in a cooling, lubricating and barrier liquid enclosed in a housing ( 7 ) having a cooling arrangement and a circulation arrangement, wherein the motor unit ( 2 ) is a permanent magnet motor unit.

PIEZOELECTRIC FAN

A piezoelectric fan in which vibration of blades is unaffected by external noise includes a vibrating plate including blades and a base. First piezoelectric elements are attached to a side of a first blade adjacent to the base. Second piezoelectric elements are attached to a side of a second blade adjacent to the base. Third piezoelectric elements are attached to a side of a third blade adjacent to the base. A holder includes a supporting body and a holding member that sandwich the base therebetween. The holding member has a supporting portion and main-body fixing portions including respective main-body fixing holes. The main-body fixing portions extend from the supporting portion. 1. (canceled)2. A piezoelectric fan comprising:a vibrating plate including a base having a flat plate shape and a plurality of blades arranged along the base at predetermined intervals in the longitudinal direction of the base;a piezoelectric element attached to the blade; anda holding member having a flat plate shape and including a supporting portion and a main-body fixing portion, the supporting portion being configured to support the base; whereinadjacent ones of the plurality of blades are driven to vibrate in opposite phases; andthe main-body fixing portion of the holding member extends from the supporting portion and is arranged in a region which is not overlapped with the base in a plan view.3. The piezoelectric fan according to claim 2 , wherein the main-body fixing portion is positioned to a blade side compared with the base in the plan view of the vibrating plate.4. The piezoelectric fan according to claim 2 , wherein the holding member is made of an insulating material.5. The piezoelectric fan according to claim 2 , wherein the supporting portion has a shape that is identical or substantially identical to the base; andthe main-body fixing portion is positioned between the plurality of blades.6. The piezoelectric fan according to claim 2 , wherein the base and the plurality of ...

BLOWING DEVICE AND CLEANER

A blowing device includes a mixed flow impeller that rotates about a central axis extending vertically, a motor that drives the mixed flow impeller to rotate, and an impeller cover surrounding an outside of the mixed flow impeller in a radial direction. The mixed flow impeller includes a hub portion extending outwardly in the radial direction toward a lower side in an axial direction, and moving blades juxtaposed on an outer surface of the hub portion in a circumferential direction. A minimum dimension of a first gap between the moving blade and the impeller cover at a lower end portion of the moving blade is larger than a minimum dimension of a second gap between the moving blade and the impeller cover at an upper end portion of the moving blade. 1. A blowing device comprising:a mixed flow impeller that rotates about a central axis extending vertically;a motor that drives the mixed flow impeller to rotate; andan impeller cover surrounding an outside of the mixed flow impeller in a radial direction; wherein a hub portion that expands outwardly in the radial direction toward a lower side in an axial direction; and', 'a plurality of moving blades which are juxtaposed on an outer surface of the hub portion in a circumferential direction; and, 'the mixed flow impeller includesa minimum dimension of a first gap between the moving blade and the impeller cover at a lower end portion of the moving blade is larger than a minimum dimension of a second gap between the moving blade and the impeller cover at an upper end portion of the moving blade.2. The blowing device according to claim 1 , wherein the hub portion includes a lower surface recess portion that is recessed in the axial direction on a lower surface.3. The blowing device according to claim 1 , whereinthe motor is disposed below the mixed flow impeller;a motor housing which surrounds an outside of the motor in the radial direction is provided; anda minimum dimension of a third gap between the motor housing and the ...

BLOWING DEVICE AND CLEANER

A blowing device includes an impeller that rotates about a central axis, a motor disposed below the impeller in a central axis direction that drives the impeller to rotate, and a motor housing surrounding the motor. The motor housing includes a motor housing top plate extending in a direction orthogonal to the central axis and facing a lower surface of the impeller, and a motor housing cylindrical portion extending downwardly in the axial direction from an outer edge of the motor housing top plate in a radial direction. A top plate recess portion extending from the outer edge of the motor housing top plate in the radial direction to an inside in the radial direction and recessed downwardly is defined on an upper surface of the motor housing top plate. 1. A blowing device comprising:an impeller that rotates about a central axis extending vertically;a motor that is disposed below the impeller in a direction of the central axis that drives the impeller to rotate; and a motor housing top plate that extends in a direction orthogonal to the central axis and faces a lower surface of the impeller in an axial direction; and', 'a motor housing cylindrical portion that extends downwardly in the axial direction from an outer edge of the motor housing top plate in a radial direction; and, 'a motor housing surrounding the motor; wherein the motor housing includesa top plate recess portion, which extends from the outer edge of the motor housing top plate in the radial direction to an inside in the radial direction and is recessed downwardly, is defined on an upper surface of the motor housing top plate.2. The blowing device according to claim 1 , wherein a notch portion claim 1 , which is recessed from other portions in a circumferential direction claim 1 , is defined on an outer edge portion or a lower surface of the impeller.3. The blowing device according to claim 2 , wherein the notch portion is provided in a portion of the outer edge of the impeller.4. The blowing device ...

METHOD AND SYSTEM FOR COOLING A MOTOR-COMPRESSOR WITH A CLOSED-LOOP COOLING CIRCUIT

A fluid compression system is disclosed having a hermetically-sealed housing with at least a motor and a compressor arranged therein. The motor may drive both the compressor and a blower device coupled to the housing or otherwise arranged within the housing and configured to circulate a cooling gas throughout the housing and thereby cool the motor and accompanying radial bearings. The blower device circulates the cooling gas through a closed-loop circuit which may include a heat exchanger and gas conditioning skid. Buffer seals may be used to seal the shaft on both sides of the compressor so as to prevent the migration of liquid and solid contaminants into the closed-loop cooling circuit. 1. A fluid compression system , comprising:a hermetically-sealed housing comprising a motor end and a compressor end, the housing defining a plurality of internal cooling passages;a motor disposed within the housing and coupled with a rotatable shaft, the motor being in fluid communication with the plurality of internal cooling passages;a compressor disposed within the housing, the compressor being axially-spaced from the motor and coupled with the rotatable shaft;radial bearings disposed at each end of the rotatable shaft and in fluid communication with the plurality of internal cooling passages;one or more buffer seals arranged about the rotatable shaft on either side of the compressor and inboard from the radial bearings, each buffer seal being configured to prevent leakage of a process gas into the plurality of internal cooling passages; andan impeller axially spaced from the compressor and coupled with a free end of the rotatable shaft, the impeller being configured to circulate a cooling gas in a closed cooling loop through the plurality of internal cooling passages.2. The fluid compression system of claim 1 , further comprising an external gas conditioning skid fluidly coupled with and disposed downstream from the impeller claim 1 , the external gas conditioning skid being ...

STABLE LIQUID FORMULATION OF AMG 416 (ETELCALCETIDE)

A liquid formulation comprising a peptide agonist of the calcium sensing receptor and method of preparing and using the formulation are provided. 1. A composition , comprising:etelcalcetide in a liquid formulation comprising water, wherein the formulation has a pH of 2.0 to 5.0 and wherein etelcalcetide is present at a concentration of between about 0.5 mg/mL to about 15 mg/mL.2. The composition of claim 1 , wherein etelcalcetide at a concentration of between about 0.1-10 mg/mL.3. The composition of claim 2 , wherein the formulation has a pH of 2.5 to 4.50.4. The composition of claim 1 , wherein the pH is maintained by a pharmaceutically acceptable buffer.5. The composition of claim 5 , wherein the buffer is succinate.6. The composition of claim 1 , wherein the etelcalcetide is present as etelcalcetide hydrochloride.7. The composition of claim 1 , further comprising a pharmaceutically acceptable tonicity modifier.8. The composition of claim 7 , wherein the tonicity modifier is NaCl.9. A liquid composition claim 7 , comprising: between about 0.5 mg/mL to 15 mg/mL of etelcalcetide hydrochloride in aqueous solution claim 7 , a succinate buffer that maintains at a pH of between about 2.5 to 4.5 claim 7 , and sodium chloride.10. A method for treating secondary hyperparathyroidism (SHPT) claim 7 , comprising:parenterally administering a composition comprising a therapeutically effective dose of etelcalcetide and water, wherein the composition has a pH of 2.0 to 5.0.11. The method of claim 10 , wherein parenterally administering is via intravenous injection.12. The method of claim 10 , wherein the composition comprises etelcalcetide hydrochloride.13. The method of claim 10 , wherein the composition comprises between about 0.5 mg/mL to about 15 mg/mL etelcalcetide.14. The method of claim 10 , wherein pH is maintained by a pharmaceutically acceptable succinate buffer. This application is a continuation of U.S. application Ser. No. 16/430,322, filed Jun. 3, 2019, now allowed, ...

Axial flux motor, fan assembly and associated method

An electric motor for use with a power supply includes a housing and a stator fixedly secured to the housing. The stator has a plurality of coils secured to the stator. The motor also includes a first rotor secured to the stator and having a first number of poles and a second rotor secured to the stator and having a second number of poles. The second number being different than the first number. The plurality of coils cooperates with the first rotor to rotate the first rotor at a first rotor rotational speed and the plurality of coils cooperates with the second rotor to rotate the second rotor at a second rotor rotational speed. The second rotor rotational speed is substantially different than the first rotor rotational speed.

PROTECTION STRUCTURE OF MOTOR FOR COOLING-FAN

A protection structure of a motor for a cooling fan include a motor to which power source wire is connected for receiving electricity and a hub that is coupled to the motor and rotates. The hub includes: an outer portion along an outer peripheral surface of which blades are formed and on a center of which a center hole is formed; a center portion which is disposed at a middle of the center hole and to which is a rotations shaft of the motor is coupled; and a support member that couples the outer portion and the center portion. The support member is fractured physically to prevent overload to the motor and fire in advance. Furthermore, the power source wire is configured via the support member and thus is broken together when the support member is fractured to prevent unnecessary rotation of the motor. 1. A protection structure of a motor for a cooling fan comprising a motor to which power source wire is connected for receiving electricity and a hub that is coupled to the motor and rotates wherein the hub comprises: an outer portion along an outer peripheral surface of which blades are formed and on a center of which a center hole is formed; a center portion which is disposed at a middle of the center hole and to which is a rotations shaft of the motor is coupled; and a support member that couples the outer portion and the center portion.2. The protection structure of a motor for a cooling fan of claim 1 , wherein the power source wire is coupled via the support member.3. The protection structure of a motor for a cooling fan of claim 1 , wherein a holding cap is mounted to the hub so that the outer portion is prevented from being disengaged when the support member is fractured.4. The protection structure of a motor for a cooling fan of claim 2 , wherein a holding cap is mounted to the hub so that the outer portion is prevented from being disengaged when the support member is fractured.5. The protection structure of a motor for a cooling fan of claim 3 , wherein at ...

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 ...

Integrated Modular, Multi-Stage Motor-Pump/Compressor Device

A novel integrated modular, multi-stage motor-pump/compressor device (10) is disclosed herein. In one example, the device (10) includes an outer housing (12) an electric motor stator (25) positioned within the outer housing (12) and a rotatable integrated motor/pump rotor (18) positioned within the electric motor stator (25). The rotatable integrated motor/pump rotor (18) comprises at least one electromagnet driver device (42, 33, 37) that is adapted to be electromagnetically coupled with the electric motor stator (25) and at least one impeller (28), where an inner surface (34A) of the rotatable integrated motor/pump rotor (18) and the impeller (28) define a primary process fluid flow path (36) within the rotatable integrated motor/pump rotor (18).

BLOWERS HAVING NOISE REDUCTION FEATURES

Blowers having noise reduction features are provided. A blower may include a main body defining an airflow path therethrough, the main body extending between and defining an inlet end and an outlet end. The blower may further include an inlet muffler provided at the inlet end. The inlet muffler includes a plurality of inlet ports, each of the plurality of inlet ports including a peripheral surface defining a port aperture therethrough. At least one of the plurality of inlet ports further includes a damper material provided on the peripheral surface of the at least one inlet port and further defining the port aperture therethrough. 1. A blower , comprising:a main body defining an airflow path therethrough, the main body extending between and defining an inlet end and an outlet end; andan inlet muffler provided at the inlet end, the inlet muffler comprising a plurality of inlet ports, each of the plurality of inlet ports comprising a peripheral surface defining a port aperture therethrough, at least one of the plurality of inlet ports further comprising a damper material provided on the peripheral surface of the at least one inlet port and further defining the port aperture therethrough.2. The blower of claim 1 , wherein the damper material is a foam.3. The blower of claim 1 , wherein the damper material is a polyurethane foam.4. The blower of claim 1 , wherein a plurality of slots is defined through the damper material.5. The blower of claim 1 , wherein the plurality of inlet ports comprises between four and ten inlet ports.6. The blower of claim 1 , wherein the plurality of inlet ports consists of seven inlet ports.7. The blower of claim 1 , further comprising a damper liner claim 1 , the damper liner disposed within the main body proximate the outlet end.8. The blower of claim 7 , wherein at least one air gap is defined between the damper liner and the main body.9. The blower of claim 1 , further comprising a fan assembly disposed within the main body claim 1 , the ...

COMPRESSOR WITH MOTOR COOLING

A compressor includes a compression mechanism, a shaft, a motor, and a cooling medium delivery structure. The motor includes a rotor mounted on the shaft and a stator disposed radially outwardly of the rotor to form a gap between the rotor and the stator. The cooling medium delivery structure includes inlet and outlet conduits located to supply and discharge a cooling medium to and from the motor. The shaft has an external shape different than an internal shape of the rotor to form at least one axial passageway between the shaft and the rotor. The cooling medium is supplied through the gap and the at least one axial passageway to cool the rotor. 1. A compressor comprising:a compression mechanism that compresses refrigerant when rotated;a shaft rotatable about a rotation axis and attached to the compression mechanism to rotate a part of the compression mechanism;a motor arranged to rotate the shaft, the motor including a rotor mounted on the shaft and a stator disposed radially outwardly of the rotor to form a gap between the rotor and the stator; anda cooling medium delivery structure including an inlet conduit located to supply a cooling medium to the motor and an outlet conduit located to discharge the cooling medium from the motor,the shaft having an external shape different than an internal shape of the rotor to form at least one axial passageway between the shaft and the rotor along an axial length of the shaft at least as long as an axial length of the rotor, andthe inlet conduit being located to supply the cooling medium through the gap and the at least one axial passageway to cool the rotor, and the outlet conduit being located to discharge the cooling medium from the gap and the at least one axial passageway.2. The compressor according to claim 1 , whereinthe external shape of the shaft is different than the internal shape of the rotor to form a plurality of axial passageways between the shaft and the rotor along the axial length of the shaft at least as ...

Fan

A blower fan according to a preferred embodiment of the present invention is a centrifugal fan. At least a portion of each of a plurality of blades of an impeller portion is arranged above a stator. A lower plate portion is arranged to define an air channel portion and an air outlet arranged on a lateral side of the impeller portion when a side wall portion arranged to surround an outer circumference of the impeller portion and an upper plate portion arranged above the impeller portion are present. The air channel portion is arranged to extend in a circumferential direction between an outer circumference of the stator and the side wall portion. At least a portion of a circuit board is arranged in the air channel portion and on the lower plate portion. A plurality of lead wires extending from the stator are connected to the circuit board in the air channel portion.

BLOWER

A blower includes a housing including an inlet and an outlet, a motor to drive a rotatable shaft, first and second impellers provided to the shaft, the first and second impellers each including a plurality of impeller blades, a first stationary component provided to the housing and including stator vanes downstream of the first impeller, and a second stationary component provided to the housing and including stator vanes downstream of the second impeller. A first set of stator vanes of the first stationary component is provided around the motor and are configured and arranged to direct airflow along the motor, to de-swirl the airflow and to decelerate air to increase pressure. A blower including a third impeller and third stationary component positioned above the first impeller is also described. 1. A PAP device , comprising:a casing; anda blower provided within the casing,the casing including at least first and second chambers and a plurality of conduits that allow air to pass from the first chamber to the second chamber, the plurality of conduits arranged to provide acoustic impedance and flow measurement by providing a defined pressure drop.2. A PAP device according to claim 1 , wherein the plurality of conduits includes a plurality of parallel tubes to provide laminar flow.3. A PAP device according to claim 1 , wherein the plurality of conduits includes 5-50 tubes.4. A PAP device according to claim 1 , further comprising a flow plate to support the plurality of conduits between the first and second chambers.5. A PAP device according to claim 1 , wherein the defined pressure drop is about 0-5 cmHO.6. A PAP device according to claim 1 , wherein the first chamber is an inlet chamber to allow ambient air to enter the casing and the second chamber is a blower chamber to receive the blower.7. A PAP device according to claim 6 , further comprising one or more inlet conduits extending at least partially into the inlet chamber.8. A PAP device according to claim 7 , ...

ELECTRIC COMPRESSOR

An electric compressor comprising a casing in which a compressing mechanism an electric motor portion for driving the compressing mechanism and an inverter portion for driving the electric motor portion are incorporated, wherein a surface of the casing is provided with a collided portion the collided portion is provided only on a portion of the casing other than a portion thereof in which the electric motor portion is incorporated and a portion of the casing other than a portion thereof in which the inverter portion is incorporated. According to this, it is possible to provide the electric compressor capable of preventing a high voltage portion from being exposed to an impact load applied to the electric compressor when a vehicle collides without increasing a weight, an external size and a cost of the electric compressor 1. An electric compressor comprising a casing in which a compressing mechanism , an electric motor portion for driving the compressing mechanism , and an inverter portion for driving the electric motor portion are incorporated , in which the electric compressor is laterally placed by a mounting leg existing around a barrel of the casing , whereinthe compressing mechanism and the electric motor portion are incorporated in a main container,a suction auxiliary container is attached to a compressing mechanism-side opening of the main container such that the suction auxiliary container is opposed to the opening,the inverter portion is incorporated in the suction auxiliary container, anda surface around the barrel of the casing is provided with a collided portion, the collided portion is provided only on a portion of the main container in which the compressing mechanism is incorporated other than a portion of the suction auxiliary container in which the inverter portion is incorporated and other than a portion of the main container in which the electric motor portion is incorporated.2. The electric compressor according to claim 1 , wherein the collided ...

Single or multiple stage blower and nested volute(s) and/or impeller(s) therefor

A double-ended blower includes a blower motor assembly supporting opposed first and second shaft ends. The first and second shaft ends have respective first and second impellers attached thereto and enclosed within first and second volutes, respectively. The first volute is connected to an inlet and the second volute is connected to an outlet. The blower motor assembly is supported in a chassis enclosure and a radially outer inter-stage path is between the first and second volute. The second volute is at least partially substantially concentrically nested with the radially outer inter-stage gas path.

Refrigeration system mixed-flow compressor

A compressor includes a housing, a first compression stage defined within the housing, a second compression stage defined within the housing, and a motor disposed between the first compression stage and the second compression stage relative to a flow of fluid through the compressor. The first compression component of the first compression stage has a mixed-flow configuration and the second compression component of the second compression stage has a radial-flow configuration.

Fan Impeller System For Configuring And Constructing A Fan Impeller

A fan impeller system has a rotor element ( 10 ), a multiplicity of fan impeller blades ( 30 ) and a multiplicity of adapter elements ( 20 ). The rotor element ( 10 ) has a multiplicity of receptacles ( 11 ) that are evenly distributed in a circumferential direction (U) with an adapter element ( 20 ). The adapter element ( 20 ) is arranged between the respective fan impeller blade ( 30 ) and the respective receptacle ( 11 ). The adapter elements ( 20 ) may differ at least in their shape and/or dimensions. The fan impeller blades ( 30 ) may differ at least in their shape and/or dimensions.

Fan motor

The present invention provides a fan motor which includes a housing, a stator disposed inside the housing, a rotor disposed inside the stator, a blade coupled to the rotor, and a printed circuit board disposed under the blade, wherein the printed circuit board includes a first mounting portion positioned inside a radius of the blade and a second mounting portion positioned outside the radius of the blade, and in which a component having a large height is mounted on the second mounting portion. Therefore, an advantageous effect that a component having a large height may be mounted within a limited design height.

Turbo compressor including intercooler

Provided is a turbo compressor for compressing a gas such as air and supplying the compressed gas to outside, the turbo compressor including a compression gas inlet for sucking the gas, a first impeller, a second impeller, a compression gas outlet for discharging to outside, a compression unit including compression gas channels connected from the compression gas inlet to the compression gas outlet, a motor to rotate the first and second impellers, and including a rotary shaft, a housing including a motor accommodation space, and an intercooler including air-cooling channels provided on the compression gas channels located between the first and second impellers, wherein the air-cooling channels penetrate through and are hidden in the housing. According to the present invention, the turbo compressor's size may be reduced by integration of the intercooler and the housing, and damage of the intercooler due to external impact may be prevented.

CENTRIFUGAL BLOWER SYSTEM WITH INTERNAL GAS MIXING AND GAS PHASE CHEMICAL REACTOR INCORPORATING SAME

A centrifugal blower system has internal gas mixing capability. 1. A centrifugal blower system comprising:a) a series of blower units, each blower unit in the series comprising a casing having an axial inlet and a radial outlet, an impeller disposed within the casing for drawing a gaseous medium at a first pressure into the axial inlet and expelling gaseous medium at a second higher pressure through the radial outlet and a motor for driving the impeller;b) a duct having a first end connected to the radial outlet of a blower unit in the series, a second end connected to the axial inlet of another blower unit in the series, and a gas flow-confining wall defining an internal gas flow passageway; and,c) a gas flow inlet for admitting a gaseous medium to the gas flow passageway of duct (b), the gas flow inlet being defined in or connected to the gas flow-confining wall of duct (b).2. The centrifugal blower system of wherein inlet (c) is connected to a source of second gaseous medium claim 1 , the second gaseous medium in combination with first gaseous medium expelled from a blower unit whose radial outlet is connected to the first end of duct (b) being capable of forming a reactive and/or explosive mixture claim 1 , the motor driving the impeller of the blower unit the axial inlet of which is connected to the second end of duct (b) being an explosion-resistant or gas-sealed electric motor or an electric motor disposed externally to the housing of the blower unit and connected to the impeller thereof by a shaft.3. The centrifugal blower system of further comprising:d) a controller for controlling the operation of the blower system.4. The centrifugal blower system of further comprising:e) a gaseous medium directing structure which is at least one of (i) the interior surface of the gas flow-confining wall of duct (b) configured to be substantially parallel to the flow of gaseous medium expelled from the radial outlet of a blower unit to which duct (b) is connected, and (ii) ...

FLAMMABLE REFRIGERANT SYSTEMS AND COMPRESSORS

The systems and compressors for use with flammable refrigerants can include features that can reduce or address the generation of sparks or arcs internal or external to the compressor that could ignite the flammable refrigerant. The systems and compressors can also include features that can reduce or address leakage into or out of the hermetic compressor shell which could create a flammable atmosphere that could be ignited if the flammable atmosphere came into contact with an ignition source. 1. A compressor comprising:a shell, the shell having an upper portion connected to a lower portion to form an enclosed space;a compression mechanism, the compression mechanism being positioned in the lower portion of the shell; and a rotor connected to the shaft, the rotor being positioned in the upper portion of the shell; and', 'a stator to rotate the rotor, the stator being positioned outside of the upper portion of the shell., 'a motor connected to the compression mechanism by a shaft to power the compression mechanism, the motor comprising2. The compressor of wherein the stator is mounted on an outer surface of the upper portion of the shell.3. The compressor of wherein the upper portion of the shell comprises a non-magnetic material.4. The compressor of wherein the non-magnetic material comprises austenitic stainless steel claim 3 , a polymer material claim 3 , a ceramic material claim 3 , or an epoxy material.5. The compressor of wherein the upper portion of the shell has a first material thickness and the lower portion of the shell has second material thickness greater than the first material thickness.6. The compressor of wherein the first material thickness is in the range of 0.02 inches to 0.1 inches.7. The compressor of further comprising a flange portion to connect the upper portion of the shell and the lower portion of the shell.8. The compressor of wherein the flange portion is integral and continuous with one of the upper portion of the shell or the lower ...

HEAT EXCHANGER ASSEMBLY

A heat exchanger assembly includes a heat exchanger panel disposed at an inclined orientation. A fan assembly is disposed vertically above the heat exchanger panel and includes a fan impeller connected to a fan mount. The fan impeller is sized and positioned such that part of the fan impeller rotates vertically above the upper end of the heat exchanger panel. A casing has a plurality of inner walls for guiding air from the heat exchanger panel toward the fan assembly. The inner walls include a sloped wall. A distance between an upper end of the sloped wall and a fan rotation axis is greater than a distance between a lower end of the sloped wall and the fan rotation axis. The sloped wall is adjacent to the upper end of the heat exchanger panel such that the part of the fan impeller rotates vertically above the sloped wall. 1. A heat exchanger assembly , comprising:a frame; a tubing arrangement for circulating fluid therein; and', 'a plurality of fins in thermal contact with the tubing arrangement, the fins being spaced apart from one another for air to flow therebetween and into an interior space of the heat exchanger assembly;, 'a heat exchanger panel mounted to the frame and configured to exchange heat with air flowing therethrough, the heat exchanger panel having a lower end and an upper end, the heat exchanger panel being disposed at an inclined orientation such that the upper and lower ends thereof are offset from one another, the heat exchanger panel comprisinga plurality of enclosing panels connected to the frame and defining in part the interior space of the heat exchanger assembly; a fan mount; and', 'a fan impeller connected to the fan mount, the fan impeller being rotatable about a fan rotation axis to pull air into the interior space of the heat exchanger assembly through the heat exchanger panel and evacuate heated air upwardly from the interior space of the heat exchanger assembly through the fan assembly, the fan impeller being sized and positioned ...

Columnar air moving devices, systems and methods

An air moving device includes a housing member, an impeller assembly, and a nozzle assembly. The nozzle assembly can include one or more angled vanes set an angle with respect to a central axis of the air moving device. The air moving device can output a column of moving air having an oblong and/or rectangular cross-section. A dispersion pattern of the column of moving air upon the floor of an enclosure in which the air moving device is installed can have an oblong and/or rectangular shape. The dimensions of the dispersion pattern may be varied by moving the air moving device toward or away from the floor, and/or by changing the angles of the stator vanes within the nozzle assembly.

SINGLE STAGE, AXIAL SYMMETRIC BLOWER AND PORTABLE VENTILATOR

A blower includes a housing including a proximal opening and a distal opening that are co-axially aligned, a stator component) provided to the housing, an impeller positioned between the proximal opening of the housing and the stator component, and a motor adapted to drive the impeller. The impeller includes a plurality of impeller blades. The stator component includes a plurality of air directing grooves along its exterior surface. The leading edge of the air directing grooves extend tangentially outwards from the outer tips of the impeller blades and are configured to collect the air exiting the impeller blades and direct it from a generally tangential direction to a generally radial direction by dividing the air from the impeller and directing the air along a curved path towards the distal opening so that airflow becomes substantially laminar. 120-. (canceled)21. A ventilator system for delivery of respiratory therapy to a patient comprising:a housing,the housing including a first opening configured to act as an inspiration inlet for airflow to the patient for inspiration and act as an expiration outlet for expired air from the patient during expiration, andthe housing including a second opening configured to act as an inspiration outlet for airflow to the patient for inspiration and act as an expiration inlet for expired air from the patient during expiration;a blower structured to receive air from the first opening and provide pressurized air to the second opening,wherein the blower is positioned between the first opening and the second opening; anda passive valve assembly structured to allow air to flow through the blower along a flow path from the first opening to the second opening, and from the second opening to the first opening.22. The ventilator system according to claim 21 , wherein the housing includes: a first or top housing part comprising a printed circuit board assembly mounted thereto claim 21 , the printed circuit board assembly comprising one or ...

Double-motor Double-blade Booster Fan

The present invention discloses a double-motor double-blade booster fan, including: a fan outer frame, a rotating mechanism installed in a center position of the fan outer frame, and a wire (circuit connection) electrically connected with the rotating mechanism and having a USB interface, wherein the rotating mechanism includes a motor bracket; a first motor and a second motor arranged on both ends of the motor bracket respectively; a shifting yoke installed on the motor bracket; a first blade installed on an output shaft of the first motor; and a second blade installed on an output shaft of the second motor, wherein the first blade includes a first axle center and first leaf blades uniformly dispersed on an outer circumference of the first axle center, and the second blade includes a second axle center and second leaf blades uniformly dispersed on an outer circumference of the second axle center. The present invention not only has simple structure and stable performance, but also has larger wind volume and wind pressure than those of a traditional single-blade booster fan, is a design that integrates efficacy and energy saving and has great market application and popularization values. 1121322212223212112142252344142415515251. A double-motor double-blade booster fan , comprising: a fan outer frame () , a rotating mechanism () installed in a center position of the fan outer frame () , and a wire () (circuit connection) electrically connected with the rotating mechanism () and having a USB interface , wherein the rotating mechanism () comprises a motor bracket (); a first motor () and a second motor () arranged on both ends of the motor bracket () respectively; a shifting yoke () installed on the motor bracket (); a first blade () installed on an output shaft of the first motor (); and a second blade () installed on an output shaft of the second motor () , wherein the first blade () comprises a first axle center () and first leaf blades () uniformly dispersed on an ...

AIR PUMP

A housing of the air pump has a first air inlet, an air inlet passage, an inflation inlet, an air outlet passage and an air outlet. The motor has two output shafts, the first fan is connected with one of the output shafts and located at one end of the air inlet passage, and the second fan is connected with another output shaft and located at one end of the air outlet passage. The second and the first fans are configured to rotate at a same direction, and the inflation inlet is located between the first and the second fans. The first switch unit is adapted to connect or disconnect the first air inlet with the air inlet passage, and the second switch unit is adapted to connect or disconnect the air outlet with the air outlet passage. The air pump has simple structure, convenient control and low cost. 1. An air pump , comprising:a housing, provided with an first air inlet, an air inlet passage, an inflation inlet, an air outlet passage and an air outlet;a motor, having two output shafts;a first fan, connected with one of the output shafts of the motor and located at one end of the air inlet passage;a second fan, connected with another of the output shafts of the motor and located at one end of the air outlet passage, the second fan and the first fan being configured to rotate at a same direction, and the inflation inlet being located between the first fan and the second fan;a first switch unit, configured at another end of the air inlet passage to connect or disconnect the first air inlet with the air inlet passage; anda second switch unit, configured at another end of the air outlet passage to connect or disconnect the air outlet with the air outlet passage.2. The air pump according to claim 1 , wherein a motor receiving cavity is provided within the housing claim 1 , in which the motor claim 1 , the first fan and the second fan are received claim 1 , one end of the motor receiving cavity is intercommunicated with one end of the air inlet passage claim 1 , and another ...

COOLING FAN WITH ROTOR SHAFT END ABUTTING POLYOXYMETHYLENE TUBE BOTTOM

An exemplary cooling fan includes a base, a central tube formed at the base, a stator, and a rotor being rotatable relative to the stator. The central tube is made of polyoxymethylene. The central tube includes a bottom plate mounted on the base and a peripheral sidewall extending upwardly from a peripheral edges of the bottom plate. The bottom plate and the sidewall cooperatively define a blind hole therebetween. The stator is mounted around the sidewall of the central tube. The rotor includes a hub and a shaft extending from the hub. The shaft includes a free end received in the blind hole and directly abutting the bottom plate. 1. A cooling fan , comprising:a base;a central tube made of polyoxymethylene, the central tube having a bottom plate mounted on the base and a peripheral sidewall extending upwardly from a peripheral edge of the bottom plate, the bottom plate and the sidewall cooperatively defining a blind hole therebetween;a stator mounted around the sidewall of the central tube; anda rotor being rotatable relative to the stator, the rotor comprising a hub and a shaft extending from the hub, the shaft having a free end received in the blind hole and directly abutting the bottom plate.2. The cooling fan of claim 1 , wherein an annular clasp is received in the blind hole claim 1 , an inner edge of the clasp engages with an outer circumferential surface of the free end and an outer edge of the clasp abuts against an inner circumferential surface of the sidewall.3. The cooling fan of claim 2 , wherein an annular recess is defined in the shaft at the free end claim 2 , and the inner edge of the clasp is received in the recess and engaged with the shaft.4. The cooling fan of claim 2 , wherein an annular inner step extends inwardly from the inner circumferential surface of a bottom portion of the sidewall claim 2 , and the clasp abuts a top end of the inner step.5. The cooling fan of claim 2 , wherein a bearing is received in the blind hole and located at a top ...

Switched reluctance motor assembly

Disclosed herein is a switched reluctance motor assembly, including: a rotating shaft forming a rotating center of a motor; a rotor part rotatably coupled on the rotating shaft; a front part mounted over the rotor part to support a first bearing part of the rotating shaft; a diffuser part having a plurality of integrated guide vanes mounted at an outer side thereof while being coupled with the axial upper portion of the front part; and an impeller part coupled with the axial upper portion of the diffuser and coupled with the rotating shaft. According to the preferred embodiments of the present invention, it is possible to reduce the noise generated at the time of driving the motor by manufacturing the guide vanes mounted in the diffuser of the switched reluctance motor so as to be vertically integrated.

Electric motor

An electric motor for a blower and the like has a commutator and a brush assembly for making electrical contact with the commutator. The brush assembly includes a brush holder and a brush slidably mounted to the brush holder. The brush holder includes a brush holder plate and a side portion extending from the brush holder plate. The brush is arc-shaped and includes a first surface contacting the brush holder plate and a second surface contacting the side portion of the brush holder. The side portion of the brush holder has a number of ribs contacting the second surface of the brush.

BLOWER

A blower includes a housing including an inlet and an outlet, a motor to drive a rotatable shaft, first and second impellers provided to the shaft, the first and second impellers each including a plurality of impeller blades, a first stationary component provided to the housing and including stator vanes downstream of the first impeller, and a second stationary component provided to the housing and including stator vanes downstream of the second impeller. A first set of stator vanes of the first stationary component is provided around the motor and are configured and arranged to direct airflow along the motor, to de-swirl the airflow and to decelerate air to increase pressure. A blower including a third impeller and third stationary component positioned above the first impeller is also described. 1. A PAP device , comprising:a casing; anda blower provided within the casing,the casing including at least first and second chambers and a plurality of conduits that allow air to pass from the first chamber to the second chamber, the plurality of conduits arranged to provide acoustic impedance and flow measurement by providing a defined pressure drop.2. A PAP device according to claim 1 , wherein the plurality of conduits includes a plurality of parallel tubes to provide laminar flow.3. A PAP device according to claim 1 , wherein the plurality of conduits includes 5-50 tubes.4. A PAP device according to claim 1 , further comprising a flow plate to support the plurality of conduits between the first and second chambers.5. A PAP device according to claim 1 , wherein the defined pressure drop is about 0-5 cmHO.6. A PAP device according to claim 1 , wherein the first chamber is an inlet chamber to allow ambient air to enter the casing and the second chamber is a blower chamber to receive the blower.7. A PAP device according to claim 6 , further comprising one or more inlet conduits extending at least partially into the inlet chamber.8. A PAP device according to claim 7 , ...

Compressor driving motor and cooling method for same

A compressor driving motor includes: a rotor; a stator surrounding an outer peripheral part of the rotor; a case accommodating the rotor and the stator; a liquid introduction path introducing a liquid refrigerant from a refrigerant circuit including a compressor; and a gas introduction path introducing a gas refrigerant from the refrigerant circuit. The case includes a downstream chamber located on one end side of the rotor and the stator in an axial direction and provided with the compressor, and an upstream chamber located on the other end side in the axial direction and communicating with the downstream chamber through a gap between the outer peripheral part of the rotor and an inner peripheral part of the stator. The introduced liquid refrigerant and the introduced gas refrigerant are mixed in the upstream chamber, and wet steam of the mixed refrigerant is supplied to at least the gap.

Fan motor

Fan motor 1 has: a stator 6, a rotor 4 having a rotary shaft 22, a cover portion 8 and bracket 2 surrounding the entirety of the stator 6 and rotor 4 in a liquid-tight manner except for the top end portion of rotary shaft 22, and a fan member 10 affixed to the top end portion of the rotary shaft 22; on cover portion 8 and bracket 2, an insertion hole 42 projecting outward of cover portion 8 and bracket 2 is formed on cover portion 8 and bracket 2, penetrating the top end portion of rotary shaft 22, and a cover portion bearing 44 is erected between insertion hole 42 and rotary shaft 22.

DOWNHOLE BLOWER SYSTEM WITH PASSIVE RADIAL BEARINGS

This disclosure describes various implementations of a downhole-blower system that can be used to boost production in a wellbore. The downhole-blower system includes a blower and an electric machine coupled to the blower that can be deployed in a wellbore, and that can, in cooperation, increase production through the wellbore. 1. A downhole-type blower system comprising:a blower configured to be positioned in a wellbore, the blower configured to rotatably drive or be driven by fluid produced through the wellbore;an electric machine configured to be positioned downhole of the blower, the electric machine configured to rotatably drive or be driven by the blower;a bearing shaft coupling the blower and the electric machine, the bearing shaft configured to transfer rotation between the blower and the electric machine; anda passive magnetic radial bearing assembly configured to magnetically support the bearing shaft.2. The downhole-type blower system of claim 1 , wherein the bearings shaft is made from a non-magnetic material.3. The downhole-type blower system of claim 1 , wherein the bearing shaft comprises a shaft magnet assembly comprising a plurality of axially-magnetized magnets.4. The downhole-type blower system of claim 3 , wherein the plurality of axially-magnetized magnets are radially imbedded into the bearing shaft.5. The downhole-type blower system of claim 3 , wherein the plurality of axially-magnetized magnets are arranged so that magnet polarities alternate along an axis of the bearing shaft.6. The downhole-type blower system of claim 3 , wherein an exterior surface the shaft magnet assembly is substantially flush with an outer surface of the bearing shaft.7. The downhole-type blower system of claim 3 , further comprising a stator magnet assembly surrounding the bearing shaft claim 3 , the stator magnet assembly comprising a plurality of stator magnets.8. The downhole-type blower system of claim 7 , wherein identical poles of the plurality of stator magnets ...

Heat dissipation apparatus and communications device

Embodiments of the present invention provide a heat dissipation apparatus. Wherein a loop coil is disposed on a swing plate. A first magnet and a second magnet are located on two sides of the loop coil, and when a current whose direction periodically varies flows through the loop coil, an Ampere force whose direction periodically varies is applied to the loop coil under an action of a magnetic field formed by the first magnet and the second magnet, so that the loop coil drives the swing plate to swing back and forth. The present invention is used for heat dissipation of a micro electronic component.

Motor assembly

A motor includes a housing that has a bottom with a first bearing accommodation and a cylindrical side surface portion which extends from the bottom; a rotor assembly with a rotation shaft, and a rotor mounted on the rotation shaft and accommodated inside the housing; a stator assembly accommodated inside the housing and surrounding the rotor; a housing cover coupled to an upper end of the housing and having a second bearing accommodation; a flow guide on the housing cover; an impeller connected to the rotation shaft over the flow guide; an impeller cover; a first bearing accommodated in the first bearing accommodation and receiving the rotation shaft; and a second bearing accommodated in the second bearing accommodation and receiving the rotation shaft, the housing cover having a cover body with an opening, connection arms between the second bearing accommodation and the opening portion, and a guide rib.

STABLE LIQUID FORMULATION OF AMG 416 (ETELCALCETIDE)

A liquid formulation comprising a peptide agonist of the calcium sensing receptor and method of preparing and using the formulation are provided. 1. A pharmaceutical formulation comprising AMG 416 hydrochloride in aqueous solution , wherein the formulation has a pH of 2.0 to 5.0.2. The formulation of claim 1 , wherein the formulation has a pH of 2.5 to 4.5.3. The formulation of claim 1 , wherein the formulation has a pH of 2.5 to 4.0.4. The formulation of claim 1 , wherein the formulation has a pH of 3.0 to 3.5.5. The formulation of claim 1 , wherein the pH is maintained by a pharmaceutically acceptable buffer.6. The formulation of claim 5 , wherein the buffer is succinate.7. The formulation of claim 1 , wherein the AMG 416 hydrochloride is present in the formulation at a concentration of 0.1 mg/mL to 20 mg/mL8. The formulation of claim 1 , wherein the AMG 416 hydrochloride is present in the formulation at a concentration of 1 mg/mL to 15 mg/mL.9. The formulation of claim 1 , wherein the AMG 416 hydrochloride is present in the formulation at a concentration of 2.5 mg/mL to 10 mg/mL.10. The formulation of claim 1 , further comprising a pharmaceutically acceptable tonicity modifier.11. The formulation of claim 10 , wherein the tonicity modifier is present in the formulation at a concentration wherein the formulation is approximately isotonic.12. The formulation of claim 10 , wherein the tonicity modifier is NaCl.13. The formulation of claim 1 , wherein the formulation has less than 10% degradation when stored at 2-8° C. for 2 years.14. The formulation of claim 1 , wherein the formulation has less than 10% degradation when stored at room temperature for 2 years.15. A formulation comprising 2 mg/mL to 20 mg/mL of AMG 416 hydrochloride in aqueous solution claim 1 , a succinate buffer that maintains the formulation at a pH of about 3.0 to 3.5 claim 1 , and a concentration of sodium chloride wherein the formulation is approximately isotonic. This application is a ...

COOLING SYSTEM FOR E-CHARGER ASSEMBLY

An e-charger includes an outer housing and a rotor supported for rotation within the outer housing. A motor assembly is housed within the outer housing and includes an electric motor and a motor case. The electric motor is encased within the motor case. The electric motor is configured to drivingly rotate the rotor within the outer housing. Furthermore, the e-charger includes a cooling system configured to receive a coolant. The cooling system includes a manifold passage defined in the outer housing. The cooling system includes a first motor cooling circuit and a second motor cooling circuit that are cooperatively defined by the outer housing and the motor case. The first motor cooling circuit and the second motor cooling circuit are fluidly connected to the manifold passage. The manifold passage is configured to distribute a flow of the coolant between the first motor cooling circuit and the second motor cooling circuit. 1. An e-charger comprising:an outer housing;a rotor that is supported for rotation within the outer housing;a motor assembly that is housed within the outer housing, the motor assembly including an electric motor and a motor case, the electric motor encased within the motor case, the electric motor configured to drivingly rotate the rotor within the outer housing; anda cooling system configured to receive a coolant, the cooling system including a manifold passage defined in the outer housing, the cooling system including a first motor cooling circuit and a second motor cooling circuit that are cooperatively defined by the outer housing and the motor case, the first motor cooling circuit and the second motor cooling circuit being fluidly connected to the manifold passage, the manifold passage configured to distribute a flow of the coolant between the first motor cooling circuit and the second motor cooling circuit.2. The e-charger of claim 1 , wherein the motor case includes a circumferential face and a longitudinal end face;wherein the first motor ...

Pump System

A pump system includes: a metallic flow path housing including a suction portion configured to suction a fluid and a discharge portion configured to deliver the suctioned fluid; and a resin motor housing configured to drive a pump rotor existing inside the flow path housing in a state of being fitted and connected to the flow path housing, in which the flow path housing includes a first fitting portion having a cylindrical inner circumferential surface, and a first flange portion in an attitude perpendicular to a center axis that becomes a center of the inner circumferential surface, and the motor housing includes a second fitting portion having a columnar outer circumferential surface and a second flange portion, and on an outer circumferential surface of the second fitting portion, protrusions are formed. 1. A pump system comprising:a metallic flow path housing including a suction portion configured to suction a fluid and a discharge portion configured to deliver the suctioned fluid; anda resin motor housing configured to drive a pump rotor existing inside the flow path housing in a state of being fitted and connected to the flow path housing,wherein the flow path housing includes a first fitting portion having a cylindrical inner circumferential surface, and a first flange portion in an attitude perpendicular to a center axis that becomes a center of the inner circumferential surface,the motor housing includes a second fitting portion having a columnar outer circumferential surface fitted into the first fitting portion and a second flange portion connected to the first flange portion, and on an outer circumferential surface of the second fitting portion, a plurality of protrusions are formed to protrude to a position at which the protrusions have a diameter larger than an inner diameter of the inner circumferential surface of the first fitting portion, andthe first fitting portion and the second fitting portion are connected to each other in a state where a ...

Fluid sealing member and fluid pump and motor having fluid sealing member

The present invention is directed to a fluid sealing member and a motor for preventing or reducing chances of fluids and/or substances or products from entering the motor chamber or cavity of a motor and causing damage to the motor's internal components and/or causing the motor to make undesirable noises or sounds. The present invention is also directed to a motor having a fluid sealing member, and to a fluid pump having a fluid sealing member. The present invention is further directed to a fluid pump that comprises a jet assembly and a motor assembly, which comprises a motor. The fluid pump may further comprise one, some or all of the following: a fluid sealing member, a mounting housing member or coupling device, a gasket or seal, a liner (when a liner is not already provided or present), and a driven magnetic disc assembly having a magnetic pole array.

TURBO CHILLER

A turbo chiller that has an oil-free configuration, which reduces the frequency of maintenance and maintenance-induced release of refrigerant, and can achieve a reduced environmental impact by utilizing the characteristics of the low-pressure refrigerant R1233zd(E) that reaches negative pressure at a saturation temperature of 18° C. or lower. The turbo chiller comprises a refrigeration cycle that includes a turbo compressor, a condenser, a decompression device, and an evaporator connected in sequence via piping and is filled with a refrigerant; wherein the refrigerant is a low-pressure refrigerant R1233zd(E) refrigerant with low global warming potential and low ozone depletion potential; the turbo compressor has a direct drive configuration in which a rotating shaft of impellers is directly joined to a motor; and the rotating shaft is supported by magnetic bearings.

Brushless dc motor fan

A brushless DC motor fan is provided. The brushless DC motor fan includes a rotor and a stator module. The rotor has a shaft disposed on an inner side of the stator module and rotating relative to the stator module. The stator module has a coreless coil and a lead frame, wherein the lead frame includes six pins electrically connected to the coreless coil.

CEILING FAN ADAPTABLE TO CYCLIC MOTION

A ceiling fan adaptable to cyclic motion includes a power unit pivotally connected with a support unit via a transmission unit. The power unit is fixedly provided with a ceiling fan housing, which has a topside and a bottom side respectively provided with an opening and a through hole, the through hole corresponding to a rotating shaft of the power unit. When the ceiling fan is operated, the power unit will pivotally turn along the support unit and drive the blade unit to rotate and actuate the air around to blow toward the front of the blade unit along the periphery of the ceiling fan housing. By so designing, the interior of the ceiling fan is not easy to accumulate batting and dust, and heat of the power unit can be exhausted through the opening at the topside of the ceiling fan housing. 1. A ceiling fan adaptable to cyclic motion comprising:a support unit;a transmission unit;a power unit pivotally connected with said support unit via said transmission unit, said power unit provided with a first motor, said first motor formed with a rotating shaft;a blade unit fixedly connected with the rotating shaft of said first motor; anda ceiling fan housing secured with said power unit, said ceiling fan housing provided therein with an accommodating space, said accommodating space of said ceiling fan housing receiving said power unit, said ceiling fan housing having a topside provided with an opening, said ceiling fan having a part inserted in said opening, said ceiling fan housing having a bottom side bored with a through hole corresponding to the rotating shaft of said first motor.2. The ceiling fan adaptable to cyclic motion as claimed in claim 1 , wherein said power unit is further fixed with a second motor claim 1 , said second motor formed with a rotating shaft claim 1 , said power unit pivotally connected with said support unit via both the rotating shaft of said second motor and said transmission unit.3. The ceiling fan adaptable to cyclic motion as claimed in claim ...

Axial fan

An axial fan includes a rotor portion including a shaft arranged to extend along a central axis extending in a vertical direction; a stator portion arranged radially opposite to the rotor portion; and an impeller hub fixed to the rotor portion, and arranged to be capable of rotating integrally with the rotor portion. The impeller hub is an injection molded article, and includes a hub top plate portion arranged to extend perpendicularly to an axial direction; a hub tubular portion being tubular, and arranged to extend axially downward from an outer edge of the hub top plate portion; a plurality of blades arranged in a circumferential direction on an outer surface of the hub tubular portion; and an inner fixing portion arranged radially inward of the hub tubular portion. The rotor portion includes a rotor tubular portion being tubular and arranged to extend in the axial direction. The inner fixing portion includes a first region arranged radially opposite to an outer surface of the rotor tubular portion with a gap therebetween, and having a weld defined in a radially inner surface thereof; and a second region arranged to be in contact with at least a portion of the outer surface of the rotor tubular portion.

AXIAL FAN

An axial fan includes a rotor portion including a shaft arranged to extend along a central axis extending in a vertical direction, a stator portion arranged radially opposite to the rotor portion, and an impeller hub fixed to the rotor portion, and arranged to be capable of rotating integrally with the rotor portion. The impeller hub includes a hub top plate portion arranged to extend perpendicularly to an axial direction; a hub tubular portion being tubular, and arranged to extend axially downward from an outer edge of the hub top plate portion; a plurality of blades arranged in a circumferential direction on an outer surface of the hub tubular portion; a plurality of wall portions arranged in the circumferential direction radially inside of the hub tubular portion, with a gap between every adjacent ones of the wall portions; and joining portions each of which is arranged to join a corresponding one of the wall portions to the hub tubular portion. The rotor portion includes a rotor tubular portion being tubular and arranged to extend in the axial direction. An outer surface of the rotor tubular portion is arranged to be in contact with an inner surface of at least one of the wall portions. Each of the at least one wall portion arranged to be in contact with the outer surface of the rotor tubular portion is joined to the hub tubular portion through two or more of the joining portions arranged in the circumferential direction. 2. The axial fan according to claim 1 , wherein both circumferential end portions of each of the at least one wall portion arranged to be in contact with the outer surface of the rotor tubular portion are joined to the hub tubular portion through the corresponding joining portions.3. The axial fan according to claim 1 , wherein each of the at least one wall portion arranged to be in contact with the outer surface of the rotor tubular portion is arranged to be in contact with the outer surface of the rotor tubular portion at a circumferential ...

Blower Apparatus for an Aerodynamic Fairing Assembly

The blower apparatus includes a fan unit and an electrical motor enclosed in a blower housing, which is configured to have a large rectangular fan box, a cylindrical motor guard and vent cap. The fan unit is disposed within the fan box and the electric motor is disposed within the motor guard which extends from the fan box and is covered by the vent cap. The sidewall of the vent cap overlies and is spaced from the sidewall of the motor guard forming an outer air passage around the motor guard. Similarly, the sidewall of the motor guard is spaced from the motor forming an inner air passage around the motor. The configuration of the blower housing allows ambient inlet air to enter the blower housing between the sidewalls of the vent cap and motor guard and then pass around the motor before entering the fan unit. 1. A blower apparatus for use in an aerodynamic fairing assembly for a tractor-trailer where the blower apparatus provides a continuous output airflow into an aerodynamic wall panel that keeps the wall panel inflated ,the blower apparatus comprises:a fan unit for generating the continuous output airflow from an inlet airflow to inflate the wall panel, the fan unit includes an impeller housing and a rotatable impeller disposed within the impeller housing;a motor operatively connected to the fan unit to turn the impeller; anda blower housing enclosing the fan unit and motor, the blower housing includes the fan box and a motor guard extending from the fan box, the fan unit disposed in the fan box, the motor disposed within the motor guard, the motor guard includes a cylindrical guard sidewall, the motor interposed between and spaced from the guard sidewall to form an airflow passage around the motor, such that the inlet airflow passes over and around the motor to cool the motor and heat the inlet airflow.2. The blower apparatus of wherein the blower housing also includes a vent cap mounted to and covering the motor guard.3. The blower apparatus of wherein the ...

FAN MOTOR

This fan motor includes a motor and an impeller arranged to rotate together with a rotating portion of the motor. The motor includes a stationary portion including a stator, and the rotating portion, which includes a magnet arranged opposite to the stator and which is supported through a bearing portion to be rotatable about a central axis extending in a vertical direction with respect to the stationary portion. The stationary portion includes a shaft arranged to extend along the central axis, and an upper thrust portion arranged to extend radially outward from an upper portion of the shaft. The rotating portion includes a sleeve portion arranged radially opposite to the shaft and axially opposite to the upper thrust portion; and a rotor hub portion arranged to extend in an annular shape around the sleeve portion, and arranged to have the impeller fixed thereto. An upper end of the stationary portion is arranged at a level higher than that of an upper end of the rotating portion. 1. A fan motor comprising:a motor including a stationary portion including a stator, and a rotating portion supported through a bearing portion to be rotatable about a central axis extending in a vertical direction with respect to the stationary portion, the rotating portion including a magnet arranged opposite to the stator; andan impeller arranged to rotate together with the rotating portion of the motor; wherein a shaft arranged to extend along the central axis; and', 'an upper thrust portion arranged to extend radially outward from an upper portion of the shaft;, 'the stationary portion includes a sleeve portion arranged radially opposite to the shaft and axially opposite to the upper thrust portion; and', 'a rotor hub portion arranged to extend in an annular shape around the sleeve portion, and arranged to have the impeller fixed thereto; and, 'the rotating portion includesan upper end of the stationary portion is arranged at a level higher than that of an upper end of the rotating ...

BLOWER APPARATUS

A blower apparatus includes a casing, ribs located radially inward of the casing and integrally provided with the casing, a motor housing located radially inward of the ribs and integrally provided with the ribs, a first housing located radially inward of the motor housing, a first motor supported on one side in an axial direction by the first housing, a first impeller rotatable around the central axis on one side in the axial direction by the first motor, a second housing located on the other side of the first housing in the axial direction, a second motor supported on the other side in the axial direction by the second housing, and a second impeller rotatable around the central axis on the other side in the axial direction by the second motor. The second housing is fixed to the first housing. 1. A blower apparatus comprising:a casing including an intake port located on an upper side of a central axis that extends vertically, and a discharge port located on a lower side of the central axis;a plurality of ribs located radially inward of the casing and integrally provided with the casing;a motor housing located radially inward of the plurality of ribs and integrally provided with the plurality of ribs;a first housing located radially inward of the motor housing;a first motor supported on a first side in an axial direction by the first housing;a first impeller rotatable around the central axis on the first side in the axial direction by the first motor;a second housing located on a second side of the first housing in the axial direction;a second motor supported on the second side in the axial direction by the second housing; anda second impeller rotatable around the central axis on the second side in the axial direction by the second motor; whereinthe second housing is fixed to the first housing.2. The blower apparatus according to claim 1 , whereinthe motor housing and the first housing are an integrated member; andthe motor housing and the second housing are ...

BLOWER APPARATUS

A blower apparatus includes a casing that houses a first impeller, a first motor, a first circuit board, a second impeller, a second motor, and a second circuit board, a motor housing integrally provided with the casing, a first housing that supports the first motor, and a second housing that supports the second motor. The first housing or the second housing includes a first recessed portion into which a mounted component on the first circuit board is inserted from a first side in the axial direction, and a second recessed portion into which a mounted component on the second circuit board is inserted from a second side in the axial direction. In the first housing or the second housing, the first recessed portion and the second recessed portion are offset from each other in at least one of the circumferential direction and the radial direction. 1. A blower apparatus comprising:a first impeller and a second impeller that are arranged in an axial direction;a first motor located closer to the second impeller than to the first impeller to rotate the first impeller around a central axis;a first circuit board provided closer to the second impeller than to the first impeller on the first motor;a second motor located closer to the first impeller than to the second impeller to rotate the second impeller around the central axis;a second circuit board provided closer to the first impeller than to the second impeller on the second motor;a casing that houses the first impeller, the first motor, the first circuit board, the second impeller, the second motor, and the second circuit board;a motor housing that is located between the first impeller and the second impeller in the casing, is located radially inward of the casing, and is integrally provided with the casing;a first housing that supports the first motor on a first side in the axial direction of the motor housing; anda second housing that supports the second motor on a second side in the axial direction of the motor housing ...

Modular Low-Noise Motor

A modular fan cover assembly for inclusion on an electric motor is selectively configurable for degrees of reduced noise operation. The modular fan cover assembly includes a plurality of cooperating components arranged to direct fluid communication through the assembly. The components may include, for example, a fan cover defining a fan chamber for enclosing the fan, an inlet cover including an inlet chamber and a plurality of inlet apertures, and a silencing insert selectively includable with the fan cover assembly that may include one or more silencing features. The selective combination of the components can redirect airflow through various turns or bend in the modular fan cover assembly to trap or suppress noise propagating from the electric motor. The modular fan cover assembly may be operatively equipped with a blower assembly. 1. An electric motor comprising:a motor housing extending between a front end housing and a rear end housing;a motor shaft protruding from the front housing end and defining a motor axis; and a fan cover mountable to the rear end housing and defining an enclosed space for accommodating an impeller;', 'an inlet cover for reduced noise operation and selectively mountable to the fan cover, the inlet cover defining an inlet chamber, the inlet cover including a plurality of inlet apertures for receiving ambient air into the inlet chamber; and', 'a silencing insert configured for noise reduction and adapted to be selectively disposable within the inlet cover and providing fluid communication between the inlet chamber and the fan chamber, the silencing insert including one or more silencing features to reduce noise., 'a modular fan cover assembly mounted to the rear housing end, the modular fan cover assembly including2. The electric motor of claim 1 , wherein the silencing insert includes a baffling pipe extending parallel to the motor axis to receive and direct airflow axially into the fan chamber.3. The electric motor of claim 2 , wherein ...

Pressure dam bearing

A motor is configured to drive a centrifugal compressor. The motor includes a stator, a rotor, and a shaft. The shaft is supported by a pressure dam bearing (230,240). The pressure dam bearing is lubricated with a lubricant. The lubricant creates a lubricant wedge within the pressure dam bearing that exert an upward force on the shaft. The upward force causes an amount of vibration within the motor. The pressure dam bearing includes a pressure dam (232,242) configured to hold a portion of the lubricant and exert a downward force on the shaft. The downward force balances the upward force and reduces the amount of vibration within the motor, thus achieving greater hydrodynamic stabilization.

ELECTRIC SUPERCHARGER AND SUPERCHARGING SYSTEM

An electric supercharger that can reduce vibration amplitude in an end of a shaft due to rotational vibration is provided. An electric supercharger comprises: an impeller for supercharging a fluid by rotation; an impeller chamber for accommodating the impeller ; a motor for driving the impeller to rotate; and a motor chamber for accommodating the motor . An opening is provided between the impeller chamber and the motor chamber wherein the fluid is able to pass therethrough. Seal structures are provided for separating the motor chamber from the exterior at portions other than the opening 1. An electric supercharger comprising:an impeller for supercharging a fluid by rotation;an impeller chamber for accommodating the impeller;a motor for driving the impeller to rotate;a motor chamber for accommodating the motor;an opening provided between the impeller chamber and the motor chamber, wherein the fluid is able to pass therethrough; anda seal structure for separating the motor chamber from an exterior at portions other than the opening.2. The electric supercharger as claimed in claim 1 , wherein:the electric supercharger further comprises a rotating shaft and a bearing for supporting the rotating shaft to be rotatable; andthe bearing is of a grease sealed type.3. The electric supercharger as claimed in claim 1 , wherein the opening is not provided with any seal structure for separating the impeller chamber from the motor chamber.4. An supercharging system comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a first supercharger which is the electric supercharger as claimed in ; and'}a second supercharger provided downstream of the first supercharger. The present invention relates to an electric supercharger and a supercharging system.Among superchargers, there are electric superchargers comprising a compressor portion and a motor portion wherein a shaft transfers power. The shaft is located straddling the compressor portion and the motor portion, so it is known ...

Air flow regulating device

An air flow regulating device includes a housing, an air supply unit and a circuit board which are arranged inside the housing. The air supply unit includes an impeller and a single-phase permanent magnet brushless motor configured to drive the impeller. The single-phase permanent magnet brushless motor includes a stator and a rotor which can rotate relative to the stator. The stator includes a stator core and a single-phase winding wound around the stator core. The rotor includes a shaft and a permanent magnet fixed to the shaft. Numbers of magnetic poles of the stator and the rotor are the same and not greater than six. An outer diameter of the stator core is less than 35 mm and/or an axial thickness of the stator core is between 10 mm and 20 mm. 1. An air flow regulating device , comprising a housing , an air supply unit and a circuit board which are arranged inside the housing , wherein the air supply unit comprises an impeller and a single-phase permanent magnet brushless motor configured to drive the impeller , the single-phase permanent magnet brushless motor comprises a stator and a rotor which can rotate relative to the stator , the stator comprises a stator core and a single-phase winding wound around the stator core , the rotor comprises a shaft and a permanent magnet fixed to the shaft , numbers of magnetic poles of the stator and the rotor are the same and not greater than six , an outer diameter of the stator core is less than 35 mm , and an axial thickness of the stator core is between 10 mm and 20 mm.2. The air flow regulating device according to claim 1 , wherein the circuit board is provided with a power supply terminal and an inverter configured to provide an alternating current for the single-phase winding.3. The air flow regulating device according to claim 2 , wherein the air flow regulating device is a hair dryer claim 2 , and a heating unit which is electrically connected to the circuit board is arranged inside the housing.4. The air flow ...

ELECTRIC COMPRESSOR

This electric compressor includes a rotation shaft including a first end and a second end, a compressor impeller which is mounted on the first end of the rotation shaft and includes a back surface facing the second end, a motor disposed between the first end and the second end of the rotation shaft, a wall portion which separates an impeller space and a motor space from each other and includes a reference wall surface having a shape along the back surface of the compressor impeller, and a bypass hole which is formed in the wall portion to connect the impeller space to the motor space and includes a first opening which opens to the impeller space. In the wall portion, a recessed portion which is disposed around the first opening of the bypass hole and recessed from the reference wall surface is formed. 1. An electric compressor comprising:a rotation shaft having a rotation axis and comprising a first end and a second end in a direction of the rotation axis;a compressor impeller mounted on the first end of the rotation shaft and comprising a back surface facing the second end;a motor disposed between the first end and the second end of the rotation shaft and configured to rotate the rotation shaft and the compressor impeller; and a reference wall surface that faces the back surface of the compressor impeller and has a shape along the back surface;', 'a bypass hole that passes through the wall portion, is configured to connect the impeller space to the motor space, and comprises an opening at an end of the bypass hole that opens into the impeller space; and', 'a recessed portion that is disposed around the opening and is recessed from the opening and the reference wall surface., 'a wall portion disposed between the compressor impeller and the motor and configured to separate an impeller space in which the compressor impeller is located from a motor space in which the motor is located, the wall portion comprising2. The electric compressor according to claim 1 , wherein ...

CENTRIFUGAL FAN

A centrifugal fan includes a motor, an impeller, a circuit board, and a casing. The motor has a stator and a rotatable rotor. The impeller is fixed to and rotates with the rotor. The casing has a lower casing recessed downward and provided with a board housing portion accommodating the circuit board. The impeller includes a boss portion, blade portions, an upper shroud, and a lower shroud. The blade portions are disposed at intervals in the circumferential direction on an outer peripheral surface of the boss portion and extend radially outside. The upper shroud is connected to at least a portion of each of the blade portions on the upper side. The lower shroud is connected to at least a portion of the blade portion on the lower side. At least a portion of the lower end surface of the blade portion faces the upper surface of the circuit board. 1. A centrifugal fan comprising:a motor that has a stator and a rotor rotatable with respect to the stator;a circuit board electrically connected to the motor;an impeller fixed to the rotor, wherein the impeller is configured to rotate together with the rotor, wherein the impeller includes:a boss portion fixed to the rotor,a plurality of blade portions arranged at intervals in a circumferential direction on an outer peripheral surface of the boss portion, wherein each of the plurality of blade portions extends outward in a radial direction,an upper shroud connected to at least a first portion of each of the plurality of blade portions, anda lower shroud connected to at least a second portion of each of the plurality of blade portions, wherein the second portion is closer to the circuit board than the first portion, and a lower surface of the second portion of each of the plurality of blade portions is opposed to an upper surface of the circuit board in the axial direction;a gap for conducting airflow across the circuit board, wherein the gap is defined between a surface of the second portion of each of the plurality of blade ...

VENTILATION SYSTEM AND METHOD

Embodiments of the invention provide a ventilation exhaust fan comprising a main housing adapted to interchangeably receive a upgrade cartridge assembly. The main housing can include a fluid inlet through which fluid is received within the main housing, and a fluid outlet through which fluid exits the main housing. The ventilation exhaust fan can be installed in a structure in place of an existing ventilation exhaust fan assembly. The main housing can provide support to a scroll and a blower wheel positioned within the scroll. A motor may be nestled within the scroll and coupled to the blower wheel. A capacitor including a motor harness and plug can be electrically coupled with the motor. Electrical power can be supplied to the capacitor and motor to cause the motor to rotate the blower wheel to generate a flow of fluid out of the fluid outlet. 1. An upgrade cartridge for a ventilation apparatus , the upgrade cartridge comprising:a blower wheel capable of generating a fluid flow; an outermost peripheral wall defining a height of the scroll;', 'an intake wall extending inward from the peripheral wall over the top of the blower wheel to an intake periphery defining an intake aperture through which air enters the scroll;', 'a blower outlet defined in the scroll, the blower outlet defining a height, wherein the height of the scroll is greater than the height of the blower outlet and the scroll height transitions smoothly therebetween., 'a scroll, the scroll comprising'}2. The upgrade cartridge of claim 1 , the blower wheel defining a rotational axis and the height of the scroll and the height of the discharge outlet measured parallel to the rotational axis.3. The upgrade cartridge of claim 1 , wherein the blower outlet is partially defined by a straight scroll sidewall and a rounded top wall defining an apex of the blower outlet.4. The upgrade cartridge of the scroll height is measured between a bottom of the scroll and the apex of the blower outlet.5. The upgrade ...

Counter-Rotating Fan Assembly

A counter-rotating fan assembly includes an upstream fan that rotates in a first direction about a common axis and a downstream fan that rotates in a second, opposed direction about the common axis. The assembly has an upstream motor that drives the upstream fan, and an upstream motor support that supports the upstream motor. The assembly also has a downstream motor that drives the downstream fan, and a downstream motor support that supports the downstream motor. The upstream motor support is located upstream of the upstream fan, and the downstream motor support is located downstream of the downstream fan. 7. The fan assembly of claim 1 , whereat least one of the upstream motor support and the downstream rotor support comprise plurality of vanes,each vane has a cross section that includes a chord line that extends between a leading edge of the vane and a trailing edge of the vane, a chord length that corresponds to the length of the chord line, and a maximum thickness,the chord length is greater than the maximum thickness, andthe chord line is oriented approximately parallel to the rotation axis.32. The fan assembly of claim claim 1 , where the chord length is between 4 and 15 times the maximum thickness.42. The fan assembly of claim claim 1 , where the leading edge is rounded.52. The fan assembly of claim claim 1 , where the thickness at the trailing edge is less than the maximum thickness.6. The fan assembly of claim 1 , Wherethe upstream motor support comprises a plurality of vanes, andthe upstream motor support is plastic, and is molded integrally with a ring structure that connects the outer extremities of the vanes.7. The fan assembly of claim 1 , comprising an air guide configured to guide between a heat exchanger and the fan assembly.8. The fan assembly of claim 7 , wherein the air guide claim 7 , the barrel claim 7 , the upstream motor support and the downstream motor support are injection molded of one or more plastic materials.9. The fan assembly of claim ...

SPACER AND ELECTRIC SUPERCHARGER

A spacer is disposed between a rotor and a bearing of an electric supercharger to fix the rotor. The spacer has a tapered surface with a diameter decreasing toward the bearing in an outer circumferential surface of the spacer. An area of an end surface of the spacer on a rotor side is larger than an area of an end surface of the spacer on a bearing side. A balance correction part that corrects balance of the spacer is disposed inside a recess formed in the end surface. A region of the end surface located on an outer side of the recess relative to a central axis of the spacer constitutes a surface coming in contact with the rotor. 1. A spacer that is disposed , to fix a rotor of an electric supercharger , between the rotor and a bearing disposed in a direction of a rotational axis of the rotor relative to the rotor , the spacer comprising a tapered surface with a diameter decreasing toward the bearing in an outer circumferential surface of the spacer , whereinan area of an end surface of the spacer on a rotor side is larger than an area of an end surface of the spacer on a bearing side,a balance correction part that corrects balance of the spacer is disposed inside a recess formed in the end surface of the spacer on the rotor side, anda region of the end surface located on an outer side of the recess relative to a central axis of the spacer constitutes a surface coming in contact with the rotor.2. The spacer according to claim 1 , wherein:the spacer has a conical outer shape; andthe spacer includes a perforated portion, and the central axis of the spacer is disposed on the rotational axis of the rotor.3. The spacer according to claim 1 , wherein the balance correction part is a weight adjustment part that is formed in the spacer so that a center of gravity of the spacer is located on the central axis of the spacer.4. The spacer according to claim 1 , wherein:the balance correction part includes an excavated portion formed in the spacer, and a burr resulting from ...

FAN STRUCTURE

The present disclosure illustrates a fan structure which includes an outer shell member, a rotating module and a circuit module. The outer shell member has a receiving groove, and an axis part and a fastening part. The fastening part includes winding columns. The rotating module includes the fan, an axis coupling part pivotally connected with the axis part, and a magnetic part disposed on a periphery of the axis coupling part. The circuit module includes a circuit board which has positioning holes formed on and annularly arranged the surface thereof. Position-limiting caps are respectively mounted and fixed on the winding column after the winding columns are inserted through the positioning holes. A conductive wire is wound on the winding columns to form coils, and has two ends welded on the circuit board. Therefore, defect rate and assembly cost of production of fan structure of the present disclosure can be decreased. 1. A fan structure comprising an outer shell member , a rotating module and a circuit module , wherein:said outer shell member includes a receiving groove formed inside, an axis part protruded on a bottom side of said receiving groove, a fastening part disposed around said axis part, and a plurality of winding columns protruded on a surface of said fastening part and disposed adjacent to and around said axis part;wherein said rotating module includes a fan and a magnetic part disposed around a periphery of an axis coupling part, said fan has said axis coupling part pivotally connected to said axis part, and said magnetic part includes south magnetic portions with south magnetic pole and north magnetic part portions with north magnetic pole; andwherein said circuit module includes a circuit board mounted on a periphery of said axis part, and a plurality of positioning holes formed on a surface of said circuit board and configured for insertion of said plurality of winding columns, and at least one conductive wire directly wound on said plurality of ...

IMPELLER AND MOTOR ASSEMBLY

A breathing assistance apparatus has a pressurised gases source featuring a lightweight impeller with a plastic shaft. The impeller is shroudless. The plastic shaft is supported within the stator by a bearing structure. A resilient motor mount couples the status and the housing and provide compliance and/or damping for the motor. 114-. (canceled)15. A breathing assistance apparatus comprising: a housing', 'a gases inlet,', 'a gases outlet configured to emit pressurised gases,, 'a pressurised gases source comprising a rotor comprising a central opening comprising an indent,', 'a rotatable shaft arranged to extend through the central opening,', 'a plastic insert arranged between the rotatable shaft and the indent, thereby coupling the rotatable shaft to the rotor, and', 'at least one bearing structure configured to support the rotatable shaft within a stator., 'a motor comprising16. The breathing assistance apparatus according to claim 15 , wherein the at least one bearing structure comprising one or more flexible and/or resilient bearing mounts configured to provide compliance and/or preload and/or damping for the rotatable shaft.17. The breathing assistance apparatus according to claim 15 , further comprising a lightweight impeller coupled to the rotatable shaft.18. The breathing assistance apparatus according to claim 15 , further comprising a flexible and/or resilient motor mount configured to couple the stator and the housing to provide compliance and/or damping for the motor.19. The breathing assistance apparatus according to claim 15 , wherein the pressurised gases source further comprises a partition to define first and second interior regions within the housing claim 15 , wherein the first and second interior regions are configured to be fluidly connected by a crescent shaped opening formed in or by the partition.20. The breathing assistance apparatus according to claim 15 , wherein the indent spans a vertical thickness of the rotor.21. The breathing ...

Centrifugal compressor

A centrifugal compressor includes a low-speed shaft, an impeller, a speed increaser, a housing, a separation wall, a shaft insertion hole, a seal member, an oil pan, an oil supply passage, an oil return passage, and a pressure reduction passage. The impeller is integrally rotated with a high-speed shaft. The housing has therein an impeller chamber accommodating the impeller and a speed increaser chamber accommodating the speed increaser. The centrifugal compressor includes a bypass passage having a first end communicating with the speed increaser chamber and a second end communicating with the oil pan.

FAN

A fan includes a fan frame and a driving device. The fan frame includes a base, a frame shell and static blades arranged on the periphery of the base. The driving device includes a stator structure and a rotor structure. The stator structure includes a stator magnetic pole group and a bushing. The rotor structure includes a bearing, a shaft, a rotor shell, a magnetic structure and blades. The shaft is connected with the rotor shell and disposed through the bearing. The stator magnetic pole group magnetically drives the magnetic structure to rotate the rotor shell. The blades are arranged on the periphery of the rotor shell. Two ends of the frame shell are configured with two turning portions, respectively. The two turning portions are disposed between parts of the frame shell with different curvatures. 1. A fan , comprising:a fan frame comprising a base, a frame shell and a plurality of static blades, wherein the static blades are arranged on a periphery of the base and connected between the base and the frame shell; and a stator structure comprising a stator magnetic pole group and a bushing, wherein the stator magnetic pole group is disposed on the base, and at least a part of the bushing is protruded beyond the stator magnetic pole group; and', at least a bearing disposed in the bushing,', 'a shaft disposed through the bearing,', 'a rotor shell connected with the shaft,', 'a magnetic structure disposed corresponding to the stator magnetic pole group, wherein the stator magnetic pole group magnetically drives the magnetic structure to rotate the shaft and the rotor shell, and', 'a plurality of blades arranged on a periphery of the rotor shell, wherein the blades are disposed corresponding to the frame shell;, 'a rotor structure disposed corresponding to the stator structure and comprising], 'a driving device disposed on the base and comprisingwherein, two ends of the frame shell adjacent to the blades are configured with a first turning portion and a second ...

BOOSTED ENGINE SYSTEM OF A MOTOR VEHICLE

Methods and systems are provided for a boosted engine system having an engine arranged to receive boosted air from a variable geometry turbocharger and an electrically powered compressor arranged in parallel with the turbocharger. During temporary high torque demands above a predefined level, the electrically powered compressor may be used to supplement the flow of boosted air from the turbocharger. Additionally, a recirculation circuit around the electrically powered compressor may be provided to build up pressure in the electrically powered compressor before it is connected to the engine so as to minimize fluctuations in engine boost pressure upon start-up of the electrically powered compressor. 1. A method , comprising:responsive to a demanded torque being above a threshold while providing boosted air at a first pressure to an engine via a turbocharger compressor, operating an electric compressor arranged in parallel with the turbocharger compressor and fluidly disconnected from the engine to increase a second pressure in a recirculation circuit around the electric compressor; andresponsive to the second pressure reaching the first pressure, fluidly connecting the electric compressor to the engine.2. The method of claim 1 , wherein operating the electric compressor to increase the second pressure in the recirculation circuit includes operating an electric motor of the electric compressor while maintaining a first valve arranged in a path between an outlet of the electric compressor and an intake manifold of the engine closed and a second valve arranged in the recirculation circuit open.3. The method of claim 2 , wherein fluidly connecting the electric compressor to the engine includes simultaneously opening the first valve and closing the second valve to flow boosted air at the second pressure from the outlet of the electric compressor to the intake manifold of the engine.4. The method of claim 1 , wherein operating the electric compressor is further responsive ...

TRANSMISSION AND CENTRIFUGAL COMPRESSOR

A transmission includes a transmission housing member, a ring portion, a high speed shaft, a third roller, and a third plate bearing, which rotatably supports the third roller. The transmission housing member includes a first supporting surface, which restricts the third roller to a first position, and a second supporting surface, which restricts the third roller to a second position. The third roller is moved within a movement range from the first position to the second position. The movement range includes a specified range in which the third roller is not supported, in a radial direction of the high speed shaft, by the transmission housing member with the third plate bearing in between, but is supported by being held between the ring portion and the high speed shaft. 1. A transmission , comprising:a transmission housing member;an annular ring portion that is provided in the transmission housing member and rotates as a low speed shaft rotates;a high speed shaft that is arranged on an inner side of the ring portion;at least three rollers that are provided between the ring portion and the high speed shaft and contact both of an inner circumferential surface of the ring portion and an outer circumferential surface of the high speed shaft; andradial bearings with which the rollers are rotatably supported by the transmission housing member, wherein a movable roller that moves in a rotation direction of the ring portion in response to rotation of the ring portion; and', 'a fixed roller that is fixed so as not to move in the rotation direction of the ring portion,, 'the rollers includethe radial bearings include a movable bearing that rotatably supports the movable roller, a first supporting surface that contacts the movable bearing so as to restrict the movable roller to a first position; and', 'a second supporting surface that is provided at a position spaced apart from first supporting surface in the rotation direction and contacts the movable bearing so as to ...

Ceiling fan motor adapter

A motor adapter assembly can couple a motor shaft for a ceiling fan motor to a downrod. The motor adapter assembly can include a base plate, a cradle with arms extending through the base plate, and a threaded bushing secured between the arms of the cradle. Threading a cap to the threaded bushing can be used to pivot the downrod between an upright position and a pivoted position.

LIQUID LEVEL INDICATOR, TURBO COMPRESSOR, AND TURBO REFRIGERATOR

A liquid level indicator including a liquid level calm portion that is provided with a liquid introduction inlet that communicates with a portion below the liquid level in an oil tank and a gas vent that communicates with a portion above the liquid level; and a sight glass for observing a liquid level in the liquid level calm portion, having a liquid introduction tube provided with an extension portion that communicates with the liquid introduction inlet and extends toward the bottom portion of the oil tank, and a distal end portion that communicates with the extension portion and opens in a direction other than the downward direction below the liquid level. 1. A liquid level indicator comprising a liquid level calm portion that is provided with a liquid introduction inlet that communicates with a portion below the liquid level in a liquid storage portion and a gas vent that communicates with a portion above the liquid level; and a sight glass for observing a liquid level in the liquid level calm portion ,the liquid level indicator comprises a liquid introduction tube provided with an extension portion that communicates with the liquid introduction inlet and extends toward the bottom portion of the liquid storage portion, and a distal end portion that communicates with the extension portion and opens in a direction other than the downward direction below the liquid level.2. The liquid level indicator according to claim 1 , wherein the liquid introduction tube is provided with the distal end portion that opens in an upward direction below the liquid level.3. The liquid level indicator according to claim 1 , wherein the liquid introduction tube has a sloping portion for guiding air bubbles introduced to the tube interior to the liquid level calm portion by their buoyancy.4. The liquid level indicator according to claim 1 , wherein the distal end portion is provided bent with respect to the extension portion toward the inner wall side of the liquid storage portion.5. ...

Vacuum pump, rotor, and washer

A vacuum pump and a washer which can reduce vibration of a rotor and the rotor which can reduce the vibration are provided. When an inertia moment ratio which is a ratio between the inertia moment around a z-axis and the inertia moment around an x-axis or a y-axis is larger than 1, a natural frequency ω 2 does not match a rotational frequency Ω z but goes away from that. When the natural frequency ω 2 matches the rotational frequency Ω z , the rotor vibrates and thus, a fatigue failure occurs in a rotor blade. When the rotor is to be made larger in a radial direction of a rotating shaft, a value of the inertia moment ratio is set to a value larger than 1.

ELECTRIC FAN

An electric fan comprises a motor, a plurality of blades, a shroud and a control unit, wherein the motor is fixedly mounted to a rear net of the shroud; the blades are mounted inside the shroud, and are fixedly connected with the motor; the control unit comprises a capacitor, a switch and a power line; and the capacitor, the switch and the power line are electrically connected with the motor respectively. The control unit and the motor are connected integrally. The electric fan adopts a design of integrating the control unit and the motor, so that installation is simpler, and assembly efficiency is improved; and the fan is more compact in structure, and the space is saved. 1. An electric fan , comprising:a motor, a plurality of blades, a shroud, and a control unit, wherein the motor is fixedly mounted at an outer side of a rear net of the shroud;wherein the plurality of blades are mounted in an accommodating space of the shroud, and are fixedly connected with the motor;wherein the control unit comprises a capacitor, a switch and a power line, the capacitor, the switch and the power line being electrically connected with the motor respectively,wherein the control unit is arranged at a periphery of the motor and forms an integrated structure therewith.2. The electric fan according to claim 1 , wherein a housing is sleeved outside the motor claim 1 , and the capacitor is fixedly arranged on the housing of the motor.3. The electric fan according to claim 2 , wherein the electric fan also comprises a cradle claim 2 , which is sleeved on the housing of the motor and fixedly connected therewith claim 2 , and the switch is mounted to the cradle.4. The electric fan according to claim 3 , wherein the power line is fixed to the cradle.5. The electric fan according to claim 4 , wherein the power line is provided with a line buckle claim 4 , and the cradle is provided with a bayonet matched with the line buckle claim 4 , and the power line is clamped on the bayonet of the cradle ...

BRUSHLESS DC MOTOR

Provided is a brushless DC motor () including: a stator () around which windings are around; a magnet rotor () configured to rotate by a power supply to the stator; an inverter circuit () connected to the stator; a position detector () configured to detect a positional relationship between the magnet rotor and the windings; a speed instruction unit () configured to output, as a speed instruction signal, a voltage corresponding to a rotation speed of the magnet rotor; a duty determination unit () configured to determine a duty of a voltage applied to the stator, based on the speed instruction signal; a drive controller () configured to distribute and output a duty signal based on the positional relationship and the duty; and temperature-sensitive resistance elements () configured to, by increasing the resistance in response to a temperature rise, reduce the voltage given as the speed instruction signal. 1. A brushless DC motor , comprising:a stator around which three-phase windings are wound;a magnet rotor configured to rotate by a power supply to the stator;an inverter circuit including a plurality of switching elements and connected to the stator;a position detector configured to detect a positional relationship between the magnet rotor and the windings;a speed instruction unit configured to output, as a speed instruction signal, a voltage corresponding to a rotation speed of the magnet rotor;a duty determination unit configured to determine a duty of a voltage applied to the stator, based on the speed instruction signal from the speed instruction unit;a drive controller configured to distribute and output a duty signal to the plurality of switching elements of the inverter circuit, based on the positional relationship detected by the position detector and the duty determined by the duty determination unit; andtemperature-sensitive resistance elements configured to, by increasing a resistance in response to a temperature rise, reduce the voltage given as the speed ...

BEARING STRUCTURE AND HEAT DISSIPATING FAN USING THE SAME

The present invention relates to a bearing structure and a heat dissipating fan using the same. The bearing structure comprises a body which has a first surface, a second surface, and an inclined grease guiding surface. The first surface is provided with a shaft hole penetrating through the body. The inclined grease guiding surface is sloped on the first surface. Two end edges of the inclined grease guiding surface individually connect the first surface and the shaft hole. The bearing structure disposed in the heat dissipating fan can prevent the grease from leaking and increase the storage capacity for the grease. 1. A bearing structure , comprising:a body having a first surface, a second surface, and an inclined grease guiding surface, wherein the first surface is provided with a shaft hole penetrating through the body and connecting the first surface and the second surface, wherein the inclined grease guiding surface is sloped on the first surface, wherein two end edges of the inclined grease guiding surface individually connect the first surface and the shaft hole.2. The bearing structure according to claim 1 , wherein a plurality of axial grease guiding groove is disposed at an outer edge of the body and extends along the body axially.3. The bearing structure according to claim 1 , further comprising a first groove and a plurality of radial grease guiding grooves claim 1 , wherein the first groove is disposed on the first surface claim 1 , wherein the radial grease guiding grooves are disposed on the first surface and the second surface claim 1 , wherein one end of each of the radial grease guiding grooves disposed on the first surface is connected to the first groove.4. The bearing structure according to claim 1 , wherein the body further comprises a second groove which is recessed on the second surface in a direction from the second surface to the first surface claim 1 , wherein the second groove is disposed around the outside of the shaft hole and in ...

BLOWER FOR BREATHING APPARATUS

This invention relates to a blower for a breathing apparatus. The blower comprising a bottom support with a stub axle, a top support with a stub axle, a motor core comprising a motor stator and rotor, and an impeller coupled to the motor core via a shaft, the shaft is rotatably coupled at a first end to the stub axle on the top support and at a second end via the stub axle on the bottom support. 122-. (canceled)23. A blower for a breathing apparatus comprising:a bottom support for a shaft,a top support for a shaft,a motor core comprising a stator and rotoran impeller coupled to the motor core via a shaftwherein the shaft is rotatably coupled at a first end via a stub axle and bearing arrangement to the top support and at a second end via a stub axle and bearing arrangement to the bottom support.24. A blower for a breathing apparatus according to wherein the shaft is rotatably coupled at the first and second ends to the stub axles by bearings in the shaft.25. A blower according to wherein the shaft is rotatably coupled at the first and second ends to the top and bottom supports by stub axles and bearings in the top and bottom supports.26. A blower according to wherein the stub axle is compliant and/or resilient.27. A blower according to wherein the shaft is partially or fully hollow and the first and second ends have bearings within the hollow.28. A blower according to wherein each bearing comprises an inner race and an outer race claim 23 , and each stub axle couples to the respective inner bearing race.29. A blower according to wherein each stub axle is in the form of a protrusion that extends into and couples to the respective inner bearing race.30. A blower according to wherein each stub axle is formed from an elastomer.31. A blower according to wherein each stub axle is configured to have a friction fit within the respective inner bearing race.32. A blower according to wherein one or more of the stub axles comprises a shoulder that is formed by a flange claim 23 ...

Regenerative blower

In accordance with one aspect the present invention may comprise a regenerative blower comprising: a housing, a first port and second port in the housing, an airflow channel extending between the first and second ports for airflow between the ports, an impeller rotatable in an impeller channel to promote airflow in the airflow channel from the first port to the second port, a motor to drive the impeller, and an interrupter between the first and second ports to limit airflow from the second port to the first port. 1. (canceled)2. A regenerative blower comprising:a housing comprising a first port and a second port;an airflow channel extending between the first port and the second port;an impeller rotatable in an impeller channel, wherein the impeller promotes airflow in the airflow channel from the first port to the second port;a motor to drive the impeller;an interrupter between the first and second ports to limit airflow from the second port to the first port; andwherein the first port comprises a conduit that extends from the airflow channel, the second port comprises a conduit that extends from the airflow channel, and the first port forms a spiral with the airflow channel.3. The regenerative blower of claim 2 , wherein the second port forms a spiral with the airflow channel.4. The regenerative blower of claim 3 , wherein the first port extends from the airflow channel as a helix with a partial turn claim 3 , a variable pitch and a variable radius.5. The regenerative blower of claim 2 , wherein the first port extends from the airflow channel as a helix with a partial turn and a substantially constant pitch and radius.6. The regenerative blower of claim 2 , wherein the second port extends from the airflow channel as a helix with a partial turn and a variable pitch and a variable radius.7. The regenerative blower of claim 3 , wherein the second port extends from the airflow channel as a helix with a partial turn and a substantially constant pitch and radius.8. The ...