НАСОС С МАГНИТНЫМ ПРИВОДОМ

Изобретение относится к насосам с магнитным приводом и может быть использовано в производственных процессах, связанных с коррозионной жидкостью. Технический результат состоит в обеспечении использования в высококоррозийных условиях и условиях высоких температур до 200°С для улучшения жесткости передней опоры. Стационарный вал содержит металлическую переднюю опору, интегрированную с корпусом насоса во впуске насоса и покрытую полимерной оболочкой, изготовленной из фторполимера. Задняя опорная поверхность расположена на герметизированной нижней стороне защитной оболочки для обеспечения дополнительной опоры для стационарного вала. Рабочее колесо содержит канал для уменьшения скорости потока на впуске с целью обеспечения низкого допускаемого кавитационного запаса. 3 н. и 6 з.п. ф-лы, 7 ил.

СИСТЕМА ДИФФУЗИИ ВОЗДУХА ДЛЯ ПРОМЫШЛЕННЫХ НАСОСОВ

Устройство для диффузии воздуха предназначено для использования в центробежном насосе. Насос содержит корпус с находящейся в нем нагнетательной камерой, рабочее колесо, установленное внутри нагнетательной камеры, причем рабочее колесо имеет переднюю и заднюю стороны. Система для диффузии воздуха содержит один или более проходов, идущих через рабочее колесо от передней стороны к задней стороне, при этом проход или каждый проход имеет первое отверстие с задней стороны и второе отверстие с передней стороны рабочего колеса. Устройство для диффузии воздуха содержит корпус, имеющий сторону, находящуюся у уплотнения, и сторону, находящуюся у рабочего колеса, и, по меньшей мере, один канал, проходящий со стороны, находящейся у уплотнения, к стороне, находящейся у рабочего колеса. Канал или каждый канал имеет впускное отверстие со стороны, находящейся у уплотнения, выпускное отверстие со стороны, находящейся у рабочего колеса, и донную стенку, проходящую через корпус. Донная стенка имеет переднюю ...

Одноступенчатый центробежный насосный агрегат

Изобретение относится к области машиностроения, а именно к центробежным насосным установкам, предназначенным для перекачивания жидкостей. Одноступенчатый центробежный насосный агрегат включает центробежный одноступенчатый насос двухстороннего входа, приводной электродвигатель, муфту, соединяющую их валы, опорную раму для крепления насоса и электродвигателя, корпус, состоящий из основания и крышки, входной и выходной патрубки, ротор с закрепленным на нем рабочим колесом, установленный в опорных подшипниках, и спиральный отвод. Спиральный отвод выполнен в виде отдельной самостоятельной детали, а части его внешней поверхности, предусмотренные для размещения в выполненных для этого ложементах крышки и корпуса, соответствуют форме поверхностей этих ложементов. Рабочее колесо и спиральный отвод выполнены попарно сменными, причем параметры рабочего колеса и спирального отвода в каждой паре рассчитываются на максимальное значение эффективности при обеспечении требуемой подачи и напора. Изобретение ...

РАБОЧЕЕ КОЛЕСО ЦЕНТРОБЕЖНОГО НАСОСА

Полезная модель относится к деталям насосов необъемного вытеснения, а именно к рабочему колесу центробежного насоса. Технический результат - повышение надежности рабочего колеса центробежного насоса и центробежного насоса достигается за счет того, что часть лопаток выполнена заодно с ведущим диском, а другая часть лопаток выполнена заодно с ведомым диском в виде выступающих ортогонально поверхностям упомянутых дисков радиальных выступов равной длины, распределенных центросимметрично по поверхностям дисков, при этом лопатки выполнены на поверхностях дисков с изгибом от центра и направлены в одну сторону при совмещении дисков с образованием непрерывноточных межлопаточных каналов, а пазы для размещения в них ответных продольных выступов лопаток выполнены на поверхностях ведущего и ведомого дисков между лопатками симметрично размещению лопаток в противоположных дисках. 3 з.п. ф-лы, 3 ил.

РАБОЧЕЕ КОЛЕСО ЦЕНТРОБЕЖНОГО НАСОСА

Полезная модель относится к области насосного оборудования, а именно к рабочим колесам центробежного насоса для перекачивания в стационарных условиях нейтральных, агрессивных, легковоспламеняющихся и горючих жидкостей, и может быть использована в нефтяной, нефтедобывающей, нефтехимической, химической, теплоэнергетической промышлснностях и в коммунальном хозяйстве. Рабочее колесо центробежного насоса, содержащее основной диск со ступицей, покрывной диск и размещенные между ними лопасти, в основном диске между входными участками лопастей выполнены сквозные отверстия, оси которых параллельны оси рабочего колеса, с наружных сторон на основном и покрывном дисках выполнены кольцевые бурты, причем кольцевой бурт основного диска коаксиально охватывает выступающий из основного диска участок ступицы, при этом диаметр кольцевого бурта основного диска составляет от 0,50 до 0,55 от диаметра рабочего колеса, диаметр кольцевого бурта покрывного диска составляет от 0,88 до 1,1 от диаметра кольцевого бурта ...

ЦЕНТРОБЕЖНЫЙ НАСОС С КОЛЕСОМ ДВУХСТОРОННЕГО ВХОДА

Полезная модель относится к машиностроению, в частности к динамическим насосам, и может быть использована для создания насосов для перекачки жидкостей в различный отраслях, в том числе нефтегазовой отрасли.Сущность заявляемой полезной модели раскрывается следующим образом: центробежный насос с колесом двухстороннего входа, содержащий корпус, изготовленный из листового проката, всасывающий патрубок, не менее двух рабочих колес и направляющих аппаратов, нагнетательный патрубок, полость нагнетания, кольцевые камеры, окна в перегородках корпуса между полостью нагнетания, обечайку, расположенную коаксиально с наружной стенкой корпуса, отличающийся тем, что всасывающий патрубок проходит через напорную камеру.Техническим результатом применения полезной модели является повышение технологичности, улучшение массогабаритных показателей насоса при сохранении параметров экономичности при единичном типе производства, при необходимости доработки проточной части опытного образца, а также в связи с возможностью ...

ЦЕНТРОБЕЖНЫЙ НАСОС, В ЧАСТНОСТИ, ДЛЯ ПИТАНИЯ РАКЕТНЫХ ДВИГАТЕЛЕЙ

ЭЛЕКТРОНАСОС С ДВИГАТЕЛЕМ НА ПОСТОЯННЫХ МАГНИТАХ

... 1. Электронасос с двигателем на постоянных магнитах, представляющий собой конструкцию с двусторонне опертым неподвижным валом без устройства контроля и содержащий: корпус насоса, треугольную переднюю опору, рабочее колесо, защитную оболочку, неподвижный вал и электродвигатель, отличающийся тем, что:корпус насоса содержит входное отверстие, выходное отверстие и проточный канал и используется для размещения в нем рабочего колеса, переднее упорное кольцо, установленное на внутренней стороне входного отверстия корпуса насоса, используется для сопряжения с упорным подшипником рабочего колеса для образования вместе аксиального упорного подшипника;треугольная передняя опора, соединенная с входным отверстием корпуса насоса, проходит через отверстие ступицы в аксиальном направлении для поддержки конца неподвижного вала;в корпусе насоса собрано рабочее колесо, треугольная передняя опора проходит через отверстие ступицы в аксиальном направлении и используется для поддерживания конца неподвижного вала ...

НАСОС С МАГНИТНЫМ ПРИВОДОМ

... 1. Насос с магнитным приводом, содержащий корпус насоса, при этом корпус насоса, изготовленный из чугуна или нержавеющей стали, содержит переднюю опору, впуск, спиральную камеру, выпуск, задний фланец корпуса и облицовку корпуса; при этом корпус насоса использован для размещения в нем рабочего колеса, впуск использован для присоединения к впуску рабочего колеса с лопастями рабочего колеса для преобразования мощности вала в гидравлическую мощность, и сжатая жидкость входит в спиральную камеру и затем выходит через выпуск;при этом облицовка корпуса установлена на контактирующей с жидкостью стороне внутри корпуса насоса для изоляции от коррозионной жидкости;при этом задний фланец корпуса расположен на заднем конце корпуса насоса для соединения кронштейна и защитной оболочки;при этом передняя опора сформирована во внутреннем пространстве впуска для интегрирования с ним в один элемент, при этом передняя опора проходит в осевом направлении, образуя консольную конструкцию для соединения со стационарным ...

РАБОЧЕЕ КОЛЕСО ДЛЯ ЦЕНТРОБЕЖНОГО НАСОСА (ВАРИАНТЫ)

... 1. Рабочее колесо для центробежного насоса, содержащее радиально внутреннюю втулку; множество лопастей, проходящих прямо и в направлении, перпендикулярном оси вращения рабочего колеса, причем указанные лопасти проходят от радиально наружного конца к радиально внутреннему концу и определяют имеющий форму усеченного конуса наружный объем по аксиально наружной кромке лопастей; и компонент управления потоком, расположенный между радиально внутренним концом лопастей и проходящий к указанной втулке, причем компонент управления потоком имеет изогнутую верхнюю поверхность.2. Рабочее колесо по п.1, отличающееся тем, что лопасти в целом имеют коническую верхнюю поверхность, которая переходит в указанный компонент.3. Рабочее колесо по п.1, отличающееся тем, что на задней кромке лопастей и компонентах управления потоком предусмотрен дополнительный материал, увеличивающий толщину каждого компонента.4. Рабочее колесо по п.3, отличающееся тем, что дополнительный материал расположен радиально снаружи от ...

ПЕРЕЛИВНАЯ ВИХРЕВАЯ ТРАНСПОРТИРУЮЩАЯ УСТАНОВКА

... 1. Насос для расплавленного металла, содержащий удлиненную трубу, имеющую нижний конец и верхний конец, вал, размещенный в указанной трубе, и рабочее колесо, выполненное с возможностью вращения указанным валом и расположенное вблизи указанного нижнего конца, причем диаметр трубы превышает диаметр рабочего колеса по меньшей мере в 1,1 раза, при этом в нижнем конце имеется впуск, а в верхнем конце имеется выпуск.2. Насос по п.1, в котором диаметр трубы превышает диаметр рабочего колеса по меньшей мере в 1,5 раза.3. Насос по п.1, в котором расстояние между впуском и выпуском превышает высоту рабочего колеса по меньшей мере в три раза.4. Насос по п.3, в котором указанное расстояние превышает высоту рабочего колеса по меньшей мере в десять раз.5. Насос по п.1, в котором труба выполнена из огнеупорной керамики.6. Насос по п.1, в котором труба выполнена из металла.7. Насос по п.1, в котором указанный верхний конец содержит камеру, диаметр которой превышает диаметр трубы между впуском и указанной ...

МНОГОСТУПЕНЧАТЫЙ САМОВСАСЫВАЮЩИЙ ЦЕНТРОБЕЖНЫЙ НАСОСНЫЙ АГРЕГАТ

РАБОЧЕЕ КОЛЕСО ДЛЯ ЦЕНТРОБЕЖНЫХ НАСОСОВ

... 1. Рабочее колесо для центробежных насосов, имеющее, по меньшей мере, две лопасти (4), для перекачки сред, содержащих твердые компоненты,отличающееся тем, чтоугол (β) лопасти на входе является меньшим, чем 0°, угол β лопасти увеличивается на первом участке (9) до тех пор, пока он не достигнет величины 0°, затем увеличивается на втором участке (10) до максимального значения и уменьшается на третьем участке (11).2. Рабочее колесо по п.1, отличающееся тем, что угол (β) лопасти на входе является меньшим чем -10°.3. Рабочее колесо по п.1 или 2, отличающееся тем, что угол (β) лопасти увеличивается с одним и тем же градиентом на первом участке (9) и на втором участке (10).4. Рабочее колесо по любому из пп.1 и 2, отличающееся тем, что угол (β) лопасти увеличивается с градиентом большим чем 0,35 на первом участке (9) и/или на втором участке (10).5. Рабочее колесо по одному из пп. 1 и 2, отличающееся тем, что от точки инверсии угол (β) лопасти уменьшается на третьем участке (11) до угла (β) лопасти ...

Druckpumpe mit konstantem spiralem Fluß

Spiralströmungskonstantdruckpumpe, mit einem Pumpengehäuse, einem Pumpenkörper und einem Laufrad; wobei der Pumpenkörper am linken Ende des Pumpengehäuses angeordnet ist; wobei ein Dichtungsring am linken Ende des Pumpenkörpers angeordnet ist; wobei eine Pumpenwelle und eine hintere Pumpenabdeckung in dem Pumpenkörper festgesetzt sind; wobei sich das rechte Ende der Pumpenwelle in das Pumpengehäuse erstreckt; wobei das Laufrad am rechten Ende der Pumpenwelle angeordnet ist; wobei eine Wellenhülse außerhalb der Pumpenwelle angeordnet ist; wobei die Wellenhülse am linken Ende der Radnabe angeordnet ist; wobei eine Dichtungsvorrichtung außerhalb der Wellenhülse angeordnet ist; wobei die hintere Pumpenabdeckung in der Peripherie der Dichtungsvorrichtung angeordnet ist; wobei die hintere Pumpenabdeckung und die Dichtungsvorrichtung einen Dichtungshohlraum ausbilden, wobei ein Einlasschrägloch in dem Hochdruckbereich an der rechten Stirnseite der hinteren Pumpenabdeckung geöffnet ist; wobei die ...

Wasserpumpe

Eine Strömungsleitplatte ist stromab von einem Endabschnitt eines Zungenteils in einer Spiralkammer angeordnet und so eingerichtet, dass sie die Strömungsgeschwindigkeit von Kühlwasser verringert, das an einer Außenrand-Seite der Spiralkammer strömt, wobei die Spiralkammer eine stromab liegende Seite enthält, die zu einer Austrittsöffnung führt, und der Zungenteil die stromab liegende Seite und eine stromauf liegende Seite der Spiralkammer voneinander trennt.

Aircraft aerial refuelling system

Surface pump assembly

Pump casing.

Improvements relating to centrifugal pump impellers.

An impeller assembly for a pump.

In a pump assembly, an impeller is urged from a free end of a shaft toward an inboard shoulder on the shaft. A compression assembly fits around the shaft intermediate the impeller and the shoulder, which has an oblique slide face. The compression assembly includes a radially outwardly expandable compression collar which is resistant to axial compression, and which includes an oblique slide face forming a first sliding interface with the oblique slide face of the shaft shoulder such that axial compression tends to expand the compression collar. Complemental oblique faces of respectively a constriction ring and the compression collar interface to form a second sliding interface oriented to promote relative sliding to allow the compression collar to expand.

Pump casing

Improvements relating to centrifugal pump impellers

Pumps

Improvements relating to centrifugal pump impellers

Pump casing.

Improvements to pumps and components therefor

Improvements relating to centrifugal pump impellers.

Improvements relating to centrifugal pump impellers.

Improvements to pumps and components therefor

Pumps

Improvements relating to centrifugal pump impellers

Improvements to pumps and components therefor

Pumps

Pump casing.

Improvements relating to centrifugal pump impellers

Gas compression system

Centrifugal pump of the submersed or submersible type

A centrifugal pump, of the submersed or submersible type, comprising a hydraulic part (11, 111, 211, 311, 411, 511, 611), with a hollow body (12, 112, 212, 312, 412, 512, 612) inside which there is at least one impeller (13, 113, 213, 313, 413, 513, 613), a motor (14, 114, 214, 314, 414, 514, 614) enclosed within a motor casing (15, 115, 215, 315, 415, 515, 615) that isolates it from the pumping liquid, adapted to drive the impeller (13, 113, 213, 313, 413, 513, 613) in rotation by means of a rotation transmission shaft (16, 116, 216, 316, 416, 516, 616); the centrifugal pump (10, 110, 210, 310, 410, 510, 610) also comprises an open compartment (17, 17, 217, 317, 417, 517, 617) that spaces the motor casing (15, 115, 215, 315, 415, 515, 615) from the hollow body (12, 112, 212, 312, 412, 512, 612) that contains the at least one impeller (13, 113, 213, 313, 413, 513, 613) and hydraulic sealing means (18, 118, 218, 318, 418, 518, 618) between the open compartment (17, 117, 217, 317, 417, 517 ...

Pump casing

FLEXIBLE MEMBRANE SEALLESS CENTRIFUGAL PUMP

SUBMERSIBLE PUMP ARRANGEMENT

H. Fries-16(Revision) SUBMERSIBLE PUMP ARRANGEMENT A submersible pump arrangement including a vertically disposed pipe having an inlet at its lower end and an outlet at its upper end with a submersible pump unit being releasably connected to the inlet at the lower end only by help of gravity except during pump operation when the hydrostatic pressure difference created by the pump persists in the connection.

AUXILIARY WATER PUMP

METAL-TO-METAL SEALING FOR DIFFUSERS OF AN ELECTRICAL SUBMERSIBLE WELL PUMP

A well pump assembly includes a centrifugal pump (19) having a housing (33) with a cylindrical internal side wall (35). Upper and lower diffusers (39, 41) are located in the housing. A metal-to-metal seal (65 or 91, 99) seals an upper end portion of the lower diffuser to the lower end portion of the upper diffuser. The seal also has an outer surface (81 or 94) that frictionally engages the internal side wall of the housing. The seal is energized in response to an axial force exerted between the upper and lower diffusers. One version has a metal seal ring (65) located in mating recesses (73, 77) on the outer walls of the diffusers. Another version includes an inner lip (99) on one of the end portions of the diffusers that extends within and deflects an outer lip (91) on the other of the end portions of the diffusers.

AXIALLY SPLIT PUMP

An axially split pump for conveying a fluid is suggested having an axially split housing (2) that comprises a bottom part (21) and a cover (22), wherein the bottom part (21) has a first sealing surface (212) and a cover (22) has a second sealing surface (222), wherein the bottom part (21) and the cover (22) can be fastened to one another in such a way that the two sealing surfaces (212, 222) have a direct contact with one another, wherein a first sealing groove (213) for the reception of a first string-like sealing element (10) is provided in the sealing surfaces (212, 222), and a second sealing groove (214) is provided for the reception of a second string-like element (11), the second sealing groove (214) being connected to the first sealing groove (213) via an opening (20), and wherein a connection element (50) is provided in the opening (20) that has two lateral cut-outs (51) respectively for the reception of a string-like sealing element (10, 11), wherein the cut-outs (51) are arranged ...

IMPELLER OF A CENTRIFUGAL PUMP APPARATUS

The invention relates to an impeller (1) of a centrifugal pump apparatus, in particular of a blood pump apparatus, comprising a discoidal body (1) rotatable around an axis (2) of rotation, the body (1) comprising an upper surface (3), a lower surface (4), a central channel (5) extending in the direction of the axis (2) of rotation between the upper and lower surface (3, 4) for guiding fluid, in particular blood through the body (1) in axial direction when the body (1) is rotated in a pump chamber of a pump and several blades (6) supported by the upper surface (3) for pumping fluid, in particular blood, when the body (1) is rotated in a pump chamber of a pump, several spiral grooves (7) in the lower surface (4), each groove (7) having a bottom (7a) and two sidewalls (7b, 7c) and being open in an axial direction, merging into a circumferential surface (8) of the body (1) and extending from this circumferential surface (8) to the central channel (5) at least for providing a pumping action ...

ABRASION-RESISTANT THRUST RING FOR USE WITH A DOWNHOLE ELECTRICAL SUBMERSIBLE PUMP

A multi-stage pump stack is disclosed herein wherein the multi-stage pump stack comprises a shaft, a diffuser disposed about the shaft, an impeller disposed within the diffuser, a first thrust ring disposed adjacent to the impeller, and a second thrust ring disposed adjacent to the diffuser. The first and second thrust rings are comprised of a material with a low friction coefficient. Systems and methods for distributing forces in the multi-stage pump stack are also disclosed herein.

MULTISTAGE CENTRIFUGAL PUMP WITH COMPRESSION BULKHEADS

A multistage centrifugal pump includes an upstream housing and a downstream housing. The upstream housing and the downstream housing each have a first end, a second end and a plurality of turbomachinery stages. Each of the plurality of turbomachinery stages includes a diffuser and an impeller. A compression bulkhead is connected between the second end of the upstream housing and the first end of the downstream housing. The compression bulkhead applies a compressive force to the diffusers within the upstream housing.

LOW WEAR RADIAL FLOW IMPELLER DEVICE AND SYSTEM

A radial impeller includes a hub, a disk, and a plurality of blades. The disk is affixed to the hub. The disk has a disk plane defined by the disk. Each blade of the plurality of blades is affixed to the disk. Each blade includes a "C" shaped body portion and an upper and lower horizontal extension. The upper horizontal extension extends along an upper plane parallel to the disk plane. The lower horizontal extension extends along a lower plane parallel to the disk plane.

IMPROVEMENTS RELATING TO CENTRIFUGAL PUMP IMPELLERS

A centrifugal pump impeller includes front and back shrouds and a plurality of pumping vanes therebetween, each pumping vane having a leading edge in the region of an impeller inlet and a trailing edge, the front shroud has an arcuate inner face in the region of the impeller inlet, the arcuate inner face having a radius of curvature (Rs) in the range from 0.05 to 0.16 of the outer diameter of the impeller (D2) The back shroud includes an inner main face and a nose having a curved profile with a nose apex in the region of the central axis which extends towards the front shroud, there being a curved transition region between the inner main face and the nose. Fr is the radius of curvature of the transition region and the ratio Fr/D2 is from 0.32 to 0.65. Other ratios of various dimensions of the impeller are also described.

MOLTEN METAL IMPELLER

Molton Metal Pump with Vaned Impeller

MOLTON METAL PUMP WITH VANED IMPELLER AND FLOW DIRECTING PUMPING CHAMBER

A molten metal pump impeller comprised of an imperforate substantially circular base having a surface including a hub adapted to receive a shaft. At least two imperforate vanes being connected to and extending substantially perpendicular from the surface of the circular base and extending radially from the hub toward the periphery of the circular base. Each vane being spaced circumferentially apart and including a first edge, a second edge and a third edge. The first edge being disposed on the surface of the circular base and the second opposed edge defining an inlet end of the impeller over the entire radial dimension. The third edge being the radially outer edge defining an outlet area, which is greater than the inlet area.

IMPELLER FOR CENTRIFUGAL PUMPS

A cavitation resistant impeller for liquid-conveying centrifugal pumps has a plurality of impeller vanes, each vane having, in combination, a leading inlet edge with a root portion extending upstream of its tip portion; a vane thickness that is greater upstream of the impeller throat than the vane thickness downstream of the impeller throat; and an elliptical nose on the leading inlet edge. The invention can be used in straight-vaned impellers or in Francis-type impellers.

Als Radialpumpe ausgebildete Kreiselpumpe

Turbomachine.

Strömungsmaschine, mit einem statorseitigen Gehäuse und einem rotorseitigen Laufrad, wobei zwischen einem radial äusseren Abschnitt des Laufrads und einem angrenzenden Abschnitt des Gehäuses ein Axialspalt ausgebildet ist, mit einer ersten statorseitigen Ringstruktur (20) und einer zweiten statorseitigen Ringstruktur (21), die einander zugewandte Flächen (24, 25) aufweisen, an denen in Umfangsrichtung voneinander beabstandete, sich in Axialrichtung erstreckende Vorsprünge (22, 23) ausgebildet sind, wobei die Ringstrukturen (20, 21) in einer von mindestens zwei definierten Relativpositionen, in welchen die Ringstrukturen (20, 21) in einem verbunden Zustand derselben jeweils zusammen unterschiedliche axiale Abmessungen aufweisen, miteinander verbunden sind, wobei die Relativposition, in welcher die Ringstrukturen (20, 21) miteinander verbunden sind, über die axiale Abmessung der miteinander verbunden Ringstrukturen (20, 21) eine Abmessung des Axialspalts zwischen dem Gehäuse und dem radial ...

Turbomachine.

Strömungsmaschine, mit einem statorseitigen Gehäuse und einem rotorseitigen Laufrad, wobei zwischen einem radial äusseren Abschnitt des Laufrads und einem angrenzenden Abschnitt des Gehäuses ein Axialspalt ausgebildet ist, mit einer ersten statorseitigen Ringstruktur (20) und einer zweiten statorseitigen Ringstruktur (21), die einander zugewandte Flächen (24, 25) aufweisen, an denen in Umfangsrichtung voneinander beabstandete, sich in Axialrichtung erstreckende Vorsprünge (22, 23) ausgebildet sind, wobei die Ringstrukturen (20, 21) in einer von mindestens zwei definierten Relativpositionen, in welchen die Ringstrukturen (20, 21) in einem verbundenen Zustand derselben jeweils zusammen unterschiedliche axiale Abmessungen aufweisen, miteinander verbunden sind, wobei die Relativposition, in welcher die Ringstrukturen (20, 21) miteinander verbunden sind, über die axiale Abmessung der miteinander verbundenen Ringstrukturen (20, 21) eine Abmessung des Axialspalts zwischen dem Gehäuse und dem radial ...

CENTRIFUGAL PUMP WORKING WHEEL (VERSIONS)

GAS COMPRESSION SYSTEM

CENTRIFUGAL PUMP WORKING WHEEL (VERSIONS)

CENTRIFUGAL PUMP WORKING WHEEL AND ITS COMBINATION WITH INNER INSERT (VERSIONS)

IMPROVEMENTS FOR THE PUMPS AND COMPONENTS, FOR

GAS COMPRESSION SYSTEM

Electric motor driven fluid pump, in particular for the forced lubrication of a manual transmission of a motor vehicle

Centrifugal pump

For axially separated turbine sealing device

ROTOR FOR USE IN A CENTRIFUGAL PUMP AND METHOD OF INSTALLING A ROTOR IN A CENTRIFUGAL PUMP

METHOD FOR PRODUCING A COMPONENT OF A ROTARY MACHINE AND COMPONENT PRODUCED ACCORDING TO SUCH A METHOD

ELECTRIC PUMP

An electric pump includes: a case; a shaft member fixed to the case; a cylindrical bearing inserted on the outside of the shaft member; a rotor configured as a member separate from the bearing, and configured to rotate integrally with the bearing; and an impeller fixed to one end of the rotor, wherein a discharge path is formed between the bearing and the rotor along an axial direction, and allows fluid to return to the impeller therethrough, the fluid flowing from the outer circumference of the impeller into the case, and circulating in the case. 1. An electric pump comprising:a case;a shaft member fixed to the case;a cylindrical bearing inserted on the outside of the shaft member;a rotor configured as a member separate from the bearing, and configured to rotate integrally with the bearing; andan impeller fixed to one end of the rotor,wherein a discharge path is formed between the bearing and the rotor along an axial direction, and allows fluid to return to the impeller therethrough, the fluid flowing from the outer circumference of the impeller into the case, and circulating in the case.2. The electric pump according to claim 1 ,wherein an outlet of the discharge path is provided closer to the center of the shaft member than blade members of the impeller.3. The electric pump according to claim 1 ,wherein the rotor is made of a resin material into which the bearing is insert-molded, andwherein a portion of the discharge path passes through an inside portion of the rotor while not being in contact with the external surface of the bearing along the axial direction.4. The electric pump according to claim 2 ,wherein the rotor is made of a resin material into which the bearing is insert-molded, andwherein a portion of the discharge path passes through an inside portion of the rotor while not being in contact with the external surface of the bearing along the axial direction. This application is based on and claims priority under 35 U.S.C. §119 to Japanese Patent ...

Flow-conducting component

A flow-conducting component having at least one functional region for contact with a flowing medium and at least one functional region having supporting characteristics is provided. The two functional regions are produced from a material by successively solidifying layers using radiation in a manner that provides different material characteristics in the different functional regions.

Pool cleaner with dual filter

A pool cleaner includes a housing with at least one fluid inlet and at least one fluid outlet, and a propulsion system for propelling the pool cleaner within a pool. A suction system includes a motorized pump and is configured to draw liquid containing debris from the pool through the fluid inlet, and to expel the liquid back into the pool through the fluid outlet. A first filter is located between the fluid inlet and the pump, and a second filter is located downstream of the pump. The first filter is configured to trap debris pieces that are larger than a predetermined size to prevent the debris pieces from flowing to the pump, and the second filter is configured to trap the debris that has passed through the first filter.

ELECTRONIC PUMP

An electronic pump is provided, which includes a rotor assembly. The rotor assembly includes an impeller and a rotor which are separately injection-molded respectively. The material for injection-molding the rotor includes a magnetic material, and the material for injection-molding the impeller does not include a magnetic material. The impeller includes a first fitting portion, the rotor includes a second fitting portion, the impeller and the rotor are cooperated by the first fitting portion and the second fitting portion, and the impeller and the rotor are fixed with respect to each other by a fixing device. In this way, the impeller and the rotor may be made respectively by different materials, and an ordinary plastic material may be employed for the impeller, which may reduce the cost of manufacturing material of the rotor assembly.

HYDRODYNAMIC MACHINE AND DYNAMIC PRESSURE PUMP THEREFOR

A hydrodynamic machine contains a bladed primary wheel driven by a rotary shaft and a bladed secondary wheel, which together form a work chamber filled with a working medium. The machine has a pressure pump for delivering a working medium from the work chamber. The pressure pump has a first inlet, which projects into the work chamber, and has a first inlet opening which is aligned with the rotary shaft in the circumferential direction. The pressure pump has a second inlet which projects into the work chamber and has a second inlet opening which is aligned to the rotary shaft in the circumferential direction opposite to the first inlet opening. The first and second inlets are joined to a common working medium channel behind the two inlet openings. The first and second inlets extend adjacent to each other in the same flow direction separated by a separation wall. 116-. (canceled)17. A hydrodynamic machine , comprising:a bladed primary wheel driven around an axis of rotation;a bladed secondary wheel which together with said bladed primary wheel form a work chamber to be filled with a working medium;a secondary chamber fluidically connected to said work chamber;a dynamic pressure pump for at least indirectly discharging the working medium from said work chamber or from the hydrodynamic machine, said dynamic pressure pump having a dividing wall, a first working medium inlet projecting into said work chamber or said secondary chamber, and a first inlet opening aligned in a circumferential direction with respect to the axis of rotation, said dynamic pressure pump further having a second working medium inlet projecting into said work chamber or into said secondary chamber connected to said work chamber in a manner which allows transmission of the working medium, and a second inlet opening aligned oppositely to said first inlet opening in the circumferential direction with respect to the axis of rotation;said first working medium inlet and said second working medium inlet ...

Reducing Centrifugal Pump Bearing Wear Through Dynamic Magnetic Coupling

A pump drive for an extracorporeal blood pumping system including an adjustable drive magnet. The pump drive may be coupled to a blood pump which includes a pump impeller. The pump drive may include a stepper motor for dynamically adjusting the position of the drive magnet. The position of the drive magnet may be varied to vary the distance between the drive magnet and an impeller magnet of the pump impeller. Adjusting the position of the drive magnet may include dynamically adjusting the drive magnet and may include axially moving the drive magnet to thereby vary a magnetic attraction force between the drive magnet and the impeller magnet which may thereby minimize forces acting on one or more bearings of a pump impeller. 113-. (canceled)14. A method of minimizing wear on at least one of an upper bearing and a lower bearing of a centrifugal blood pump comprising a pump impeller , the method comprising:varying a position of a pump drive magnet such that a magnetic attraction force between a pump impeller magnet and the drive magnet is approximately equal and opposite a pump impeller lift force, the impeller lift force caused by an actuation of the pump impeller;wherein the magnetic attraction force causes the pump impeller to act on the lower bearing and the lift force causes the pump impeller to act on the upper bearing; andwherein when the magnetic attraction force and the lift force are approximately equal and opposite, an axial force on each of the upper bearing and the lower bearing is minimized.15. The method of claim 14 , wherein varying the position of the pump drive magnet comprises displacing a drive motor coupled to the drive magnet; and wherein displacing the drive motor comprises actuating a stepper motor coupled to the drive motor.16. The method of claim 15 , wherein actuating a stepper motor comprises controlling the stepper motor via a system controller.17. The method of claim 16 , wherein controlling the stepper motor via a system controller ...

CASING LINER FOR SEWAGE PUMP AND SEWAGE PUMP WITH THE SAME

A casing liner used for a sewage pump includes a surface to face an edge of a blade of an impeller when the casing liner is assembled with the impeller into the sewage pump. At least one groove with given width is formed in at least a part of the surface. The groove includes a first section with given depth, which is located on the side close to a rotational center of the impeller, a second section smaller in depth than the first section, which is located on the side far from the rotational center of the impeller, and a third section that is an inclined face connecting the first and second sections, the first to third sections being arranged in a width direction of the groove.

Metal Matrix Compositions and Methods for Manufacturing Same

A metal matrix composite composition includes tungsten carbide in an amount of 45 wt % to 72 wt % of the composition. In addition, the composition includes a binder in an amount of 28 wt % to 55 wt % of the composition. The binder includes nickel in an amount of at least 99 wt % of the binder.

Composite impeller with replaceable blades

A composite impeller for a turbofan system is disclosed. The impeller includes a hub and a plurality of replaceable impeller blades coupled to the hub. Each replaceable impeller blade includes a root, a tip, a platform extending laterally from the root, and a shroud extending laterally from the tip to engage another tip of an adjacent impeller blade. The plurality of replaceable impeller blades and the hub define the enclosed centrifugal impeller.

Pump and pump assembly

Provided is a fluid pump assembly. The pump has a pair of housings magnetically coupled to each other. The first housing contains a drive motor and a magnetic assembly. The second housing contains a magnetic assembly and a blade for imparting movement to a fluid. As the first magnetic assembly is rotated by the drive motor, the magnetic connection to the assembly in the second housing causes the second magnet to rotate, driving the blade.

PUMP AND ROTARY BAFFLE PLATE

To eliminate accumulation of air while preventing a decrease in pump efficiency, a pump is provided. The pump includes a rotary shaft, an impeller that is attached to the rotary shaft and that rotates with rotation of the rotary shaft, a casing that surrounds the rotary shaft, a shaft sealing device that seals a gap between the casing and the rotary shaft, and a baffle plate part that is located between the impeller and the shaft sealing device and attached to a rotating body. The baffle plate part extends in a direction that is inclined or orthogonal with respect to a surface orthogonal to an axial direction of the rotary shaft.

СПОСОБ ИЗГОТОВЛЕНИЯ КОМПОНЕНТА РОТАЦИОННОЙ МАШИНЫ И КОМПОНЕНТ, ИЗГОТОВЛЕННЫЙ С ИСПОЛЬЗОВАНИЕМ УПОМЯНУТОГО СПОСОБА

Группа изобретений касается способа изготовления компонента ротационной машины и самого компонента(1), имеющего по меньшей мере один внутренний проход (7), который продолжается от центра (6) до граничной поверхности (42) компонента и является по меньшей мере частично закрытым. Согласно способу предусматривают заготовку, которая содержит граничную поверхность (42) и верхнюю поверхность. Выполняют первый этап субтрактивной механической обработки, при котором путем механической обработки выполняют часть прохода (7), которая по меньшей мере содержит раскрыв (71) прохода (7) в граничную поверхность (42). Также выполняют вырез в верхней поверхности, после чего проход (7) завершают путем обработки наращиванием на заготовке. Изобретения направлены на создание компонента способом, обеспечивающим его надежность в рабочем состоянии. 2 н. и 13 з.п. ф-лы. 5 ил.

ЦЕНТРОБЕЖНЫЙ НАСОС ДЛЯ ПЕРЕМЕЩЕНИЯ ТЕКУЧЕЙ СРЕДЫ

Изобретение относится к насосам для перемещения очень горячих или очень холодных сред. Центробежный насос содержит корпус (2), имеющий впуск (3) и выпуск (4) для текучей среды, рабочее колесо (5), расположенное в корпусе (2) с возможностью вращения вокруг осевого направления (А), для перемещения текучей среды от впуска (3) к выпуску (4), вал (6), проходящий в осевом направлении (А), для привода в движение колеса (5), а также неподвижный направляющий аппарат (7) для направления текучей среды от колеса (5) к выпуску (4). Аппарат (7) присоединен к корпусу (2). Упругий компенсирующий элемент (10) установлен между корпусом (2) и аппаратом (7), который располагается вокруг вала (6). Вал (6) может удерживать аппарат (7) в центрированном положении относительно колеса (5) при радиальном перемещении относительно корпуса (2). Изобретение направлено на создание насоса для перекачивания очень горячих или очень холодных сред, эффективно предотвращающего нарушение центрирования рабочего колеса, вызванное ...

КОМПОЗИЦИОННЫЕ МАТЕРИАЛЫ С МЕТАЛЛИЧЕСКОЙ МАТРИЦЕЙ И СПОСОБЫ ИХ ПОЛУЧЕНИЯ

Изобретение относится к способу аддитивного изготовления компонента из композиционного материала с металлической матрицей. Способ включает расплавление электронным пучком порошкообразной смеси, которая содержит порошкообразный карбид вольфрама в количестве от 45 до 72 мас.% от массы порошкообразной смеси и порошкообразное связующее в количестве от 28 до 55 мас.% от массы порошкообразной смеси. Указанное порошкообразное связующее содержит никель в количестве по меньшей мере 70 мас.% от массы порошкообразного связующего. Обеспечивается повышение стойкости к износу, эрозии, коррозии и ударопрочности. 18 з.п. ф-лы, 8 ил., 2 табл., 11 пр.

СПОСОБ ИЗГОТОВЛЕНИЯ КОМПОНЕНТА ТУРБОМАШИНЫ

Изобретение относится к порошковой металлургии, в частности, к изготовлению изделий посредством послойного аддитивного наращивания. Может использоваться для изготовления деталей турбомашин. Способом послойного аддитивного наращивания изготавливают отдельные элементы детали турбомашины, имеющие оболочку, окружающую пустой объем, соответствующий массивной части детали. Отдельные элементы детали турбомашины собирают друг с другом с образованием полуфабриката детали, имеющего внутреннее пустое пространство. Полость полуфабриката заполняют объемным текучим материалом, уплотняют и отверждают объемный текучий материал в полости. Обеспечивается возможность изготовления деталей из разных материалов, позволяющих достичь оптимальное сочетание свойств конечного изделия, например, химическим и/или механическим сопротивлением, а также защиту поверхностей от коррозии в нефтяной и газовой среде. 2 н. и 27 з.п. ф-лы, 5 ил., 1 табл.

МНОГОСТУПЕНЧАТЫЙ САМОВСАСЫВАЮЩИЙ ЦЕНТРОБЕЖНЫЙ НАСОСНЫЙ АГРЕГАТ

Многоступенчатый самовсасывающий центробежный насосный агрегат с по меньшей мере двумя следующими друг за другом в главном направлении (32) движения потока насосными ступенями (4) и расположенным параллельно по меньшей мере одной насосной ступени (4) каналом (13) обратного потока. Канал (13) обратного потока в главном направлении (32) движения потока оканчивается позади направляющего аппарата (10а) первой или следующей насосной ступени (4). Изобретение направлено на усовершенствование процесса самовсасывания насоса путем сокращения времени его осуществления и исключения завихрения возвращаемой жидкости. 15 з.п. ф-лы, 7 ил.

НАСОС С ОСЕВЫМ РАЗЪЕМОМ

Изобретение касается насоса, имеющего корпус (2) с осевым разъемом, который содержит нижнюю часть (21) и крышку (22), имеющего вращающийся вал (3) в аксиальном направлении (A), и по меньшей мере одну боковую крышку (9) для закрытия корпуса (2) в аксиальном направлении. Крышка (9) имеет первую контактную поверхность (91) для взаимодействия со второй контактной поверхностью (23), обеспеченной на корпусе (2). Поверхность (23) проходит поверх нижней части (21) и крышки (22), при этом нижняя часть (21) имеет первую уплотнительную поверхность (212), а крышка (22) - вторую уплотнительную поверхность (222). Нижнюю часть (21) и крышку (22) можно скреплять друг с другом способом, где две поверхности (212, 222) входят в прямой контакт друг с другом, при этом по меньшей мере один паз (213) под уплотнение обеспечен в одной из поверхностей (212, 222) для приема уплотнительного элемента (10) в виде шнура. Паз (213) под уплотнение проходит до поверхности (23) корпуса (2), а выемка (24), окружающая вал ...

РАБОЧЕЕ КОЛЕСО ДЛЯ ЦЕНТРОБЕЖНОГО НАСОСА (ВАРИАНТЫ)

Изобретение относится к рабочему колесу уентробежного насоса, имеющему лопасти. Рабочее колесо для центробежного насоса содержит радиально внутреннюю втулку и лопасти, проходящие прямо и в направлении, перпендикулярном оси вращения рабочего колеса. Лопасти проходят от радиально наружного конца до радиально внутреннего конца и определяют имеющий форму усеченного конуса наружной объем. Компонент управления потоком образован между радиально внутренним концом лопастей и втулкой. Компонент управления потоком имеет изогнутую верхнюю поверхность. Изобретение направлено на предотвращение кавитации в центробежных насосах. 2 н. и 11 з.п. ф-лы, 5 ил.

ПОТОКОНАПРАВЛЯЮЩИЙ ЭЛЕМЕНТ

НАСОСНОЕ УСТРОЙСТВО

СПОСОБ ИЗГОТОВЛЕНИЯ КОМПОНЕНТА ТУРБОМАШИНЫ

ТУРБОУСТАНОВКА ДЛЯ СООБЩЕНИЯ ЭНЕРГИИ МНОГОФАЗНОЙ ТЕКУЧЕЙ СРЕДЕ (ВАРИАНТЫ) И СПОСОБ СООБЩЕНИЯ ЭНЕРГИИ МНОГОФАЗНОЙ ТЕКУЧЕЙ СРЕДЕ

... 1. Турбоустановка для сообщения энергии многофазной текучей среде, которая содержит по меньшей мере одну жидкую фазу и одну газообразную фазу, содержащаякорпус, имеющий впускное отверстие и выпускное отверстие,секцию осевой ступени, содержащую по меньшей мере одну осевую ступень и предназначенную для приема многофазной текучей среды через впускное отверстие и сжатия газообразной фазы указанной многофазной среды,секцию диагональной ступени, содержащую по меньшей мере одну диагональную ступень, проточно соединенную с секцией осевой ступени,секцию центробежной ступени, содержащую по меньшей мере одну центробежную ступень, проточно соединенную с секцией диагональной ступени и предназначенную для выпуска многофазной текучей среды через выпускное отверстие, ивал, соединяющий секцию осевой ступени, секцию диагональной ступени и секцию центробежной ступени,причем осевая ступень характеризуется значением угла между выпускным потоком осевого рабочего колеса и осью, параллельной оси вращения вала, ...

НАСОС С ОСЕВЫМ РАЗЪЕМОМ

Kreiselpumpenlaufrad

Die Erfindung betrifft ein Kreiselpumpenlaufrad (1) mit Pumpenflügeln (2) aus einem spritzgusstechnisch verarbeitbarem Kunststoffmaterial, für eine elektromotorische Kreiselpumpe, bestehend aus einem ein Lager (10) umfassenden Grundkörper (3), an welchem einerseits ein permanentmagnetischer Rotor (4) und andererseits eine Deckscheibe (5) anschließt, welche an den Grundkörper (3) montiert ist. Aufgabe der Erfindung ist es bei einem Kreiselpumpenrotor der eingangs genannten Gattung dafür zu Sorge zu tragen, dass er einfach aufgebaut ist, einen erhöhten Wirkungsgrad aufweist und wirtschaftlich herstellbar ist. Diese Aufgabe wird erfindungsgemäß durch das Kennzeichen des Anspruchs 1 gelöst.

Pumpe für gegossenes Metall mit Flügelrad

Hydrodynamische Maschine und Staudruckpumpe hierfür

Die Erfindung betrifft eine hydrodynamische Maschine mit einem über einer Drehachse antreibbaren beschaufelten Primärrad und einem beschaufelten Sekundärrad, die miteinander einen mit einem Arbeitsmedium befüllbaren oder befüllten Arbeitsraum ausbilden; mit einer Staudruckpumpe zum wenigstens mittelbaren Austragen von Arbeitsmedium aus dem Arbeitsraum oder aus der hydrodynamischen Maschine, wobei die Staudruckpumpe einen ersten Arbeitsmediumeinlass aufweist, der in den Arbeitsraum oder einen mit diesem arbeitsmediumleitend verbundenen Nebenraum ragt und eine erste Einlassöffnung aufweist, die in Umfangsrichtung zur Drehachse ausgerichtet ist; und die Staudruckpumpe einen zweiten Arbeitsmediumeinlass aufweist, der in den Arbeitsraum oder den mit diesem arbeitsmediumleitend verbundenen Nebenraum ragt und eine zweite Einlassöffnung aufweist, die in Umfangsrichtung zur Drehachse entgegengesetzt zur ersten Einlassöffnung ausgerichtet ist; wobei der erste Arbeitsmediumeinlass und der zweite Arbeitsmediumeinlass ...

Kühlmittelpumpe für einen Kühlmittelkreislauf und Kühlmittelkreislauf

Die Erfindung betrifft eine Kühlmittelpumpe (10) für einen Kühlmittelkreislauf (1) eines Kraftfahrzeugs, mit einem zumindest abschnittsweise in einem Pumpengehäuse (12) angeordneten Elektromotor (14), und mit einem von dem Elektromotor (14) rotatorisch angetriebenen, mit dem Elektromotor (14) mittels einer Welle (16) gekoppelten Laufrad (18), das in einem Fluidkanal (20) angeordnet ist, wobei das Laufrad (18) als Halbaxialrad ausgebildet ist, und wobei der Fluidkanal (20) als asymmetrischer, trapezförmiger Spiralkanal ausgebildet ist. Die Erfindung betrifft des Weiteren einen Kühlmittelkreislauf (1) eines Kraftfahrzeugs.

Leicht zu demontierendes geschlossenes Laufrad

Leicht zu demontierendes geschlossenes Laufrad, dadurch gekennzeichnet, dass es eine obere Abdeckplatte (1), eine untere Abdeckplatte (2), eine Buchse (3) und eine Schaufel (4) umfasst, wobei die Schaufel und die Buchse zwischen der oberen Abdeckplatte und der unteren Abdeckplatte angeordnet sind, wobei sich die Buchse in der Mitte des Laufrads befindet, wobei eine Vielzahl der Schaufeln gleichmäßig entlang einer Umfangsrichtung des Laufrads verteilt ist, und wobei die Schaufel lösbar mit der unteren Abdeckplatte und die obere Abdeckplatte lösbar mit der Vielzahl der Schaufeln verbunden ist ;wobei an der Mitte der oberen Abdeckplatte ein Flüssigkeitseinlass (11) vorgesehen ist, wobei ein Flüssigkeitsströmungskanal zwischen benachbarten Schaufeln ausgebildet ist, wobei ein Außenumfang des Laufrads zwischen den benachbarten Schaufeln liegt und mit einem Flüssigkeitsauslass (5) versehen ist, wobei der Flüssigkeitseinlass mit dem Flüssigkeitsströmungskanal in Verbindung steht, der mit dem Flüssigkeitsauslass ...

Subsea valve, flow system and method of use

Impeller

An impeller for a pump and assembly comprising a female spline 4 having a longitudinal axis including at least one groove 6 (fig 3) or at least one tooth 8 forming a spiral shape around the longitudinal axis. A pump with a shaft 7 mounted in a pump chamber, the shaft including a male spline 9 including at least one tooth 8 or one groove 6 forming a spiral shape around the longitudinal axis. An assembly is provided comprising said impeller and said pump, wherein the at least one tooth of shaft is in the at least one groove of impeller or at least one tooth of the impeller is in at least one groove of the shaft. Impeller may furthermore comprise at least one tooth or groove that makes less than one full turn around longitudinal axis, the female spline may include a plurality of teeth or grooves which may also be equidistantly spaced in the circumferential direction around the axis. Impeller may comprise at least one tooth forming a constant angle relative to planes coincident with longitudinal ...

Impeller

Retrievable permanent magnet pump

Centrifugal pump apparatus

A centrifugal blood pump apparatus includes an impeller provided in a blood chamber, first and second permanent magnets provided in one surface and the other surface of the impeller respectively, a third permanent magnet provided in an inner wall of the blood chamber, and a magnetic element and a coil for driving the impeller to rotate with a diaphragm being interposed. First and second grooves for hydrodynamic bearing different in shape and depth from each other are formed in the inner wall of the blood chamber facing the impeller, and third and fourth grooves for hydrodynamic bearing different in shape and depth from each other are formed in the diaphragm facing the impeller. The second and fourth grooves for hydrodynamic bearing generate high hydrodynamic pressure when the impeller is activated to rotate, while the first and third grooves for hydrodynamic bearing generate high hydrodynamic pressure when the impeller steadily rotates.

Ступень высокоскоростного многоступенчатого погружного центробежного насоса

1. Ступень высокоскоростного многоступенчатого погружного центробежного насоса, содержащая рабочее колесо со ступицей и направляющий аппарат, состоящий из стакана, верхнего диска с радиально-осевой опорой, нижнего диска с радиальной опорой и лопаток, нижний диск направляющего аппарата с радиальной опорой, которые выполнены монолитно со стаканом, причем стакан выполнен из перфорированного металлического цилиндра со слоем полимерного материала на его внутренней поверхности и перфорациями, заполненными полимерным материалом, причем верхний диск, нижний диск, лопатки направляющего аппарата и рабочее колесо изготовлены из полимерного материала.2. Ступень по п. 1, отличающаяся тем, что в качестве полимерного материала используются композиции на основе полифениленсульфида.3. Ступень по п. 1, отличающаяся тем, что перфорации металлического цилиндра выполнены в поперечном сечении в виде кругов диаметром от 1 мм до 6 мм, общей площадью от 10 до 70% от внутренней площади металлического цилиндра, причем круги расположены по поверхности равномерно.4. Ступень по п. 2, отличающаяся тем, что перфорации металлического цилиндра выполнены в поперечном сечении в виде кругов диаметром от 1 мм до 6 мм, общей площадью от 10 до 70% от внутренней площади металлического цилиндра, причем круги расположены по поверхности равномерно, а в качестве полифениленсульфида используется фортрон.5. Ступень по п. 1, отличающаяся тем, что перфорации металлического цилиндра выполнены в поперечном сечении в виде овалов, общей площадью от 10 до 70% от внутренней площади металлического цилиндра, причем овалы расположены по поверхности равномерно.6. Ступень по п. 2, отличающаяся тем, что перфорации м РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 162 421 U1 (51) МПК F04D 13/10 (2006.01) F04D 29/02 (2006.01) F04D 29/44 (2006.01) F04D 29/22 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2015118507/06, 18.05.2015 (24) Дата начала ...

Рабочее колесо шламового насоса

Полезная модель относится к гидромашиностроению и может быть использована для определения параметров рабочего колеса и переднего бронедиска центробежного шламового насоса для увеличения срока их наработки и КПД. Технический результат предлагаемой полезной модели заключается в увеличении срока службы шламового насоса за счет уменьшения гидравлических потерь и износа проточной части насоса при перекачке пульпы. Рабочее колесо шламового насоса включает задний и передний диски и размещенные между дисками лопасти, тыльные поверхности которых имеют наклон 60°÷80° к поверхности заднего диска с образованием проточного канала переменного сечения с выходным отверстием со стороны заднего диска и входным отверстием со стороны переднего диска, при этом отношение толщины каждой лопасти к ширине выпуска проточного канала составляет 0,2÷0,7, а отношение ширины проточного канала выпуска к ширине канала на входе составляет 0,3÷0,45, отношение диаметра рабочего колеса к его ширине составляет 0,3÷0,8, профили внутренних поверхностей переднего и заднего дисков выполнены изогнутыми, при этом отношение радиуса изгиба внутренней поверхности переднего диска к радиусу изгиба внутренней поверхности заднего диска составляет 0,2÷0,5. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 170 449 U1 (51) МПК F04D 29/22 (2006.01) F04D 7/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016139670, 11.10.2016 (24) Дата начала отсчета срока действия патента: 11.10.2016 (72) Автор(ы): Шапорев Михаил Юрьевич (RU) Дата регистрации: 25.04.2017 (56) Список документов, цитированных в отчете о поиске: CN 204851763 U, 09.12.2015. RU Приоритет(ы): (22) Дата подачи заявки: 11.10.2016 Адрес для переписки: 109456, Москва, Рязанский пр-кт, 75, корп. 4, 1-я башня, 7 этаж, КГ "Вайзэдвайс", ООО "ФПБ "Гардиум", пат. пов. Купцова Е.В., рег. N 1264 1 7 0 4 4 9 R U (57) Формула полезной модели Рабочее колесо шламового насоса, ...

Двухступенчатое рабочее колесо центробежного насоса

Появление новых технологических процессов и производств требует создания высокопроизводительного насосного оборудования, отвечающего требованиям современной науки и техники [3]. Центробежные насосы хорошо работают на всасывание, но имеют низкие показатели на выходе [1]. В исследовании ВГУЭС [4] в области «Влияние формы лопастей на режим работы колеса» приведены выводы: - в уравнение теоретического напора (уравнение Эйлера) не входит вес жидкости. Следовательно, развиваемый насосом напор не зависит от рода перекачиваемой жидкости; - при скорости движения газа, значительно меньшей скорости распространения звука в нем, газ ведет себя как капельная жидкость. В связи с этим уравнение Эйлера справедливо и для газов. Можно с уверенностью заявлять, что предлагаемая модель также надежно будет работать в насосах для перекачки газоконденсатов и газов. Для эффективности этих насосов вторая ступень напора должна проектироваться с учетом сжимаемости перекачивамого в нем газоконденсата или газа. При движении частицы жидкости вдоль стенки лопасти аналога векторы скоростей меняют свое направление, на что затрачивается передаваемая энергия от лопасти. В модели на участке, где лопасти имеют радиальное направление, они сохраняют свое направление, увеличивая лишь абсолютную величину. Основное уравнение турбомашин (Эйлера) связывает геометрические и кинематические характеристики рабочего колеса с развиваемым им напором [4]. H тр =U 2 2 /g, учитывая, что U 2 =π⋅D 2 ⋅n/60, где n - частота вращения, об/мин. Изменения частоты вращения с 1500 об/мин на 3000 об/мин в модели увеличит напор на выходе в 3÷4 раза по сравнению с аналогом. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 185 493 U1 (51) МПК F04D 29/22 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F04D 29/2222 (2018.05) (21)(22) Заявка: 2017118230, 25.05.2017 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Шипеленко Сергей Петрович (RU) Дата ...

Shrouded thrust bearings

A rotary blood pump includes a casing defining a pumping chamber. The pumping chamber has a blood inlet and a tangential blood outlet. One or more motor stators are provided outside of the pumping chamber. A rotatable impeller is within the pumping chamber and is adapted to cause blood entering the pumping chamber to move to the blood outlet. The impeller has one or more magnetic regions. The impeller is radially constrained in rotation by magnetic coupling to one or more motor stators and is axially constrained in rotation by one or more hydrodynamic thrust bearing surfaces on the impeller.

Grinder pump basin system

A grinder pump basin system is provided which includes a basin; a cover plate; a bracket secured to the cover plate; and a grinder pump with cutter plate with openings and a cutter blade secured to the bracket above a bottom surface of the basin. The bracket includes a front portion, which prevents waste water from interacting adversely with the grinder pump when it enters the basin. A discharge system for the grinder pump is secured to an outlet of the grinder pump and includes a discharge pipe and a flexible discharge coupling. Flow directional jets are also provided in an elbow of the pump discharge system to direct waste water and solids away from the grinder pump.

Screw-Type Centrifugal Pump with Cutting Inserts

A screw-type centrifugal pump with scissoring back cutters and having a housing with an intake opening and an outlet opening, both in fluid communication with an internal chamber, and an impeller assembly positioned within the chamber, is disclosed. Generally speaking, the impeller assembly has a hub having a back shroud and being attached to a rotatable pump shaft, with an impeller attached to the hub. An insert cutter positioned on a surface of the hub shroud opposite the impeller includes a cutting edge configured for shearing operation, while a stationary back plate having a surface adjacent to and facing the hub shroud includes a cutting rib having a cutting edge configured for shearing operation. The insert cutter and cutting rib work jointly to create a cutting action as the hub rotates in the chamber.

Pump Impeller

The present invention provides a pump impeller which has improved anti clogging characteristics, in particular through the use of an impeller vane having a specially profiled leading edge which, during operation of the impeller, forces rags or the like down along the leading edge, which increases in thickness along the length thereof, until the rags become re-entrained in the fluid and thus exit the impeller avoiding the clogging thereof.

PUMP AND METHOD FOR MIXED FLOW BLOOD PUMPING

A blood pump includes a hub having an axis of rotation and a generally cylindrical shape. The hub has an upstream end region, a central region, and a downstream end region, and the hub includes a magnetic material. Blades that are disposed on the downstream end region of the hub extend downstream of the hub. 1. A blood pump comprising:a hub having an axis of rotation and a generally cylindrical shape, the hub having an upstream end region, a central region, and a downstream end region, the hub including a magnetic material; and an upstream portion that is located proximate the hub and is configured to add energy to fluid having forward flow along the axis of the hub, and', 'a downstream portion that is configured to add energy to the fluid having forward flow in a direction radially outward from the hub., 'blades located at the downstream end region of the hub, the blades extending downstream of the hub, each blade including'}2. The blood pump of claim 1 , wherein the downstream portions of the blades extend radially outward from the hub.3. The blood pump of claim 1 , wherein the blood pump includes a housing claim 1 , and the hub is suspended within the housing by fore and aft bearings.4. The blood pump of claim 1 , wherein the central region and the upstream end region are devoid of blades.5. The blood pump of claim 1 , further comprising:a housing defining an inlet, an outlet, and a flow path from the inlet to the outlet; anda motor stator disposed within the housing.6. The blood pump of claim 5 , further comprising stator blades disposed within the flow path proximate the upstream end region of the hub claim 5 , the stator blades being coupled to an upstream bearing component for supporting the upstream end region of the hub.7. The blood pump of claim 5 , further comprising a downstream bearing component for supporting the downstream end region of the hub claim 5 , the downstream bearing component being located proximate the downstream end region of the hub and ...

Fluid Movement System and Method for Determining Impeller Blade Angles for Use Therewith

A fluid movement system that includes an impeller having a blade with a leading edge blade tip angle determined as a function of an increase in mass flow rate due to reinjection of flow from a flow stability device located proximate to the leading edge tip of the blade. In an exemplary method, the leading edge blade tip angle can be determined based on selecting a blade incidence level based on a mass flow gain versus flow coefficient curve. Blade leading edge tip angles determined in accordance with a method of the present invention are typically greater than blade leading edge tip angles determined using traditional methods. The greater blade leading edge tip angles can lead to more robust blades designs.

CENTRIFUGAL CHOPPER PUMP

A chopper pump is provided with a motor having a drive shaft and a casing connected to the motor and defining a bowl with an inlet for receiving waste material. A cover plate assembly is secured about the inlet. The cover plate assembly having a base with a central opening and a plurality of serrations formed into the base and spaced about the central opening, each serration being formed into a curved pocket and longitudinally tapered to form an edge on an inner surface of the base. The chopper pump also includes a cutter having a hub that is connected to the drive shaft. The cutter extends through the central opening of the base and includes at least two blades extending radially outward to guide waste material toward the plurality of serrations. 1. A chopper pump comprising:a motor having a drive shaft;a casing connected to the motor and defining a bowl with an inlet for receiving waste material;a cover plate assembly secured about the inlet, the cover plate assembly having a base with a central opening, and a plurality of serrations formed into the base and spaced about the central opening, each serration being formed into a curved pocket and longitudinally tapered to form an edge on an inner surface of the base; anda cutter connected to the drive shaft and extending through the central opening of the base, the cutter having at least two blades extending radially outward to guide waste material toward the plurality of serrations.2. The chopper pump of wherein each curved pocket is angled forward relative to a direction of rotation of the drive shaft to form a point on a leading edge of each serration.3. The chopper pump of further comprising:an impeller disposed within the bowl and connected to the drive shaft, the impeller having at least two vanes extending radially outward for converting motor torque into a centrifugal force;a wall extending transversely from an outer edge of the base;at least two mounting blocks extending radially inward from the wall; anda ...

IMPELLER

An impeller () for a centrifugal pump includes a first shroud having a plurality of blades (). A second shroud is joined onto the first shroud by way of welding. Each blade () has an apex region (), at which the blade contacts the second shroud. At least one of the blades () in a first section () of the apex region () has a weld connection to the second shroud, and in at least one second section () of the apex region () is free of a weld connection. 12. An impeller () for a centrifugal pump , the impeller comprising:{'b': '8', 'a first shroud having a plurality of blades (); and'}a second shroud joined onto the first shroud by way of welding,{'b': 8', '12, 'wherein each blade () has an apex region () where the blade contacts the second shroud, and'}{'b': 8', '20', '12', '14', '12, 'wherein at least one of the blades () in a first section () of the apex region () has a weld connection to the second shroud, and in at least one second section () of the apex region () is free of a weld connection.'}221216. The impeller () according to claim 1 , wherein the apex region () comprises a third section () which is free of a weld connection.322012141612. The impeller () according to claim 2 , wherein the first section () of the apex region () extends over a length (d) which is larger than a total length of the second section () and the third section () of the apex region ().42201214121612. The impeller () according to claim 2 , wherein the first section () is arranged in a middle of the apex region () claim 2 , the second section () on an outer edge region of the apex region () and the third section () on an inner edge region of the apex region ().52141212. The impeller () according to claim 1 , wherein the second section () extends over a length (d) of the apex region () which makes up 5% to 10% of a total length of the apex region ().62161212. The impeller () according to claim 2 , wherein the third section () extends over a length (d) of the apex region () which makes up 10 ...

Rotary pump with a vane provided in each pump outlet

A pump housing has a cylindrical interior surface having outlets and a pair of side surfaces defining, in combination with the interior surface, a substantially cylindrical chamber. The surfaces have inlets. A rotor has a void, lobes and, for each lobe, a throughpassage. The rotor is positioned in the chamber such that the void communicates with the inlet to receive fluid and the throughpassage for each lobe provides communication between the void and chamber. The rotor is rotatably mounted in the chamber such that the lobes traverse the cylindrical surface. Provided for each outlet is a vane. As the rotor turns, the rotor outer surface is traversed by the vane to create, as the vane traverses a throughpassage, a chamber ahead of the vane which increases in volume and communicates with the throughpassage, and a chamber behind the vane which decreases in volume and communicates with the outlet port.

Low flow-high pressure centrifugal pump

Low flow centrifugal pump that develops more than 25 percent greater pressure than equivalent standard type spiral impellers with circular casings.

PUMP AND METHOD FOR PRODUCING AN IMPELLER FOR A PUMP

In a centrifugal pump for pumping a fluid with central axial suctioning and radial discharging of the fluid to be pumped out of the impeller, the impeller includes an upper cover plate and a lower cover plate and multiple interposed blades therebetween. In the radial inner region, the blades extend essentially parallel to the rotation axis of the impeller in the axial direction of the pump and thus are upright, wherein said blades in the course radially outwards thereof are increasingly inclined or extend oblique. 1. A pump , in particular for home appliances such as dish washers or washing machines , having an impeller for pumping a fluid , wherein said pump is configured together with said impeller for operation as a centrifugal pump , with a central axial suctioning and a radial discharging of said fluid to be pumped out of said impeller , wherein said impeller comprises an upper cover plate and a lower cover plate and multiple interposed blades therebetween , wherein said blades are less steep inclined relative to a central longitudinal axis of said pump in a radial inner region of said impeller than in a radial outer region of said impeller.2. The pump according to claim 1 , wherein said blades in the course thereof are increasingly inclined or extend increasingly oblique from said radial inner region to said radial outer region.3. The pump according to claim 2 , wherein in said radial inner region said blades extend essentially parallel to a rotation axis of said impeller in said axial direction of said pump claim 2 , said blades thus being extending upright.4. The pump according to claim 1 , wherein an inclination of said blades is configured such that said blades are inclined or extend oblique relative to said upper cover plate in a rotation direction of said impeller.5. The pump according to claim 1 , wherein a change of an inclination of said blades is monotonously increasing from said radial inner region of said impeller to said radial outer region of ...

CENTRIFUGAL PUMP AND A DOUBLE BENT ROTOR BLADE FOR USE IN SUCH A CENTRIFUGAL PUMP

The invention relates to a centrifugal pump () comprising a pump housing () which is provided with an axial inlet (), an outlet () and a rotor () which is attached in the pump housing () such that it can rotate about an axial rotation axis A. The rotor () is provided with a central boss (), a shaft shield () fastened to the boss (), a suction shield () attached so as to be axially set apart from the shaft shield (), which suction shield () has an axial supply () aligned with the axial inlet () of the pump housing (), and a plurality of rotor blades () which are fastened between the shields (). The radial inner ends () of the rotor blades () are connected to the suction shield () by a substantial perpendicular connection. 11. Centrifugal pump () , in particular for the pumping of a mixture of substances possibly including soil , comprising:{'b': 2', '6', '5', '3', '2, 'a pump housing () which is provided with an axial inlet () and an outlet () attached tangentially to a circumferential wall () of the pump housing (),'}{'b': 7', '2', '7', '9', '11', '9', '12', '11', '12', '14', '6', '2', '15', '11', '12', '17', '18, 'a rotor () which is attached in the pump housing () such that it can rotate about an axial rotation axis A, which rotor () is provided with a central boss (), a shaft shield () fastened to the boss (), a suction shield () attached so as to be axially set apart from the shaft shield (), which suction shield () has an axial supply () aligned with the axial inlet () of the pump housing (), and a plurality of double bent rotor blades () which are fastened between the shields (, ) and each extend substantially transversely to the rotation axis A between a radial outer end () and a radial inner end (), characterized in that'}{'b': 18', '12', '18', '15', '11', '12', '181', '12', '14', '182', '11', '14, 'the radial inner ends () forming a substantially right angle with respect to the suction shield () and wherein the radial inner ends () of the rotor blades () ...

SLURRY PUMP IMPELLER

A slurry pump impeller which includes a front shroud and a back shroud each having an inner main face with an outer peripheral edge and a central axis, a plurality of pumping vanes extending between the inner main faces of the shrouds, the pumping vanes being disposed in spaced apart relation. Each pumping vane includes a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edges of the shrouds with a passageway between adjacent pumping vanes. Each passageway has associated therewith a discharge guide vane, each discharge guide vane being disposed within a respective passageway and located closer to one or the other of the pumping vanes and projecting from the inner main face of at least one of the or each shrouds. 1. A slurry pump impeller which includes a front shroud and a back shroud each having an inner main face with an outer peripheral edge and a central axis , a plurality of pumping vanes extending between the inner main faces of the shrouds , the pumping vanes being disposed in spaced apart relation , each pumping vane including opposed main side faces one of which is a pumping or pressure side face , a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edges of the shrouds with a passageway between adjacent pumping vanes , each passageway having associated therewith a discharge guide vane , each discharge guide vane being disposed within a respective passageway and located closer to one or the other of the pumping vanes and projecting from the inner main face of at least one of the or each shrouds.2. A slurry pump impeller according to claim 1 , wherein each discharge guide vane is located closer to the pumping or pressure side face of the closest adjacent pumping vane.3. A slurry pump impeller according to claim 2 , wherein each discharge guide vane has an outer end adjacent the peripheral edge of one of the shrouds claim 2 , the discharge guide vane ...

Impeller, rotary machine including the same, and method for manufacturing impeller

An impeller including: blades disposed in a circumferential direction of the impeller; a disk located close to a second end side of an axis of the impeller with respect to the blades, to which the blades are attached, and configured to be attached to a rotating shaft; and a shroud located close to a first end side of an axis of the impeller with respect to the blades, and to which the blades are attached. Flow passages are formed by the blades, the disk and the shroud. The blades, the shroud and a first portion of the disk close to the second end side of the axis of the impeller are integrated so as to form a first member. A second portion of the disk close to the first end side of the axis of the impeller forms a second member.

IMPELLER FOR CENTRIFUGAL PUMP AND CENTRIFUGAL PUMP OF VEHICLE WASHER DEVICE

An impeller for a centrifugal pump comprising a boss supported by a rotation shaft of a motor so as to be rotatable as a unit with the rotation shaft; and a plurality of blades that extend from the boss towards a radial direction outside of the boss, and that discharge liquid towards a leading end side thereof by rotating; wherein each blade comprises one side face that is a face on a first side in a rotation direction of the impeller and includes a projecting face that projects from a base end portion at a boss side of the one side face towards the first side in the rotation direction with respect to a line that connects the base end portion and a center of rotation of the blades. 1. An impeller for a centrifugal pump comprising:a boss that is supported by a rotation shaft of a motor so as to be rotatable as a unit with the rotation shaft; anda plurality of blades that extend from the boss towards a radial direction outside of the boss, and that discharge liquid towards a leading end side thereof by rotating;wherein each of the blades comprises one side face that is a face on a first side in a rotation direction of the impeller and includes a projecting face that projects from a base end portion at a boss side of the one side face towards the first side in the rotation direction with respect to a line that connects the base end portion and a center of rotation of the blades.2. The impeller of claim 1 , wherein the one side face is configured as a curved face that forms a projection towards the first side in the rotation direction claim 1 , as viewed along a blade rotation axis direction.3. The impeller of claim 1 , wherein a leading end side of the one side face is disposed further towards a second side in the rotation direction of the impeller than the projecting face with respect to the line that connects the base end portion and the center of rotation of the blades.4. The impeller of claim 1 , wherein:a plurality of pairs of the blades are formed opposing each ...

Impeller and Electric-Motor Driven Water Pump Having the Same

An impeller is comprised of a hub configured to be rotated on a central axis, a shroud formed to be opposed to the hub in a direction of the central axis and having a central opening serving as a fluid inlet, and a plurality of circumferentially-equidistant spaced blades interleaved between the hub and the shroud. When a mating face of the shroud with each of the blades is divided into a radially inward region and a radially outward region, and a mating face of each of the blades with the shroud is divided into a radially inward region and a radially outward region, a given weld range is set only in the radially inward region of the mating face of the shroud with each of the blades and the radially inward region of the mating face of each of the blades with the shroud.

ROTOR ASSEMBLY

The disclosure relates to a high-speed radial fan and to a rotor assembly () for a high-speed radial fan, comprising a bearing tube () which is axially open in the interior and in which a shaft () carrying a fan wheel () is mounted with a rotor (), wherein the rotor () of the rotor assembly () is mounted in a cylindrical separating can (). 1102040305050103. A rotor assembly () for a high-speed radial fan , comprising a bearing tube () which is axially open in the interior and in which a shaft () carrying a fan wheel () is mounted with a rotor () , wherein the rotor () of the rotor assembly () is mounted in a cylindrical separating can ().211023. The radial fan () with a rotor assembly () according to claim 1 , characterized in that the radial fan has a fan housing () claim 1 , which is formed as a single piece with the separating can ().31204050403. The radial fan () according to claim 1 , characterized in that the bearing tube () with the shaft () and the rotor () mounted on the shaft () is arranged in the separating can () claim 1 , which is closed around the circumference.41322a. The radial fan () according to claim 2 , characterized in that the separating can () extends away from a substantially flat housing base plate () of the fan housing () in the axial direction.5150515033a. The radial fan () according to claim 1 , characterized in that an air gap is formed between the rotor () and a stator () surrounding the rotor () claim 1 , and the separating can () with its cylindrical separating can walls () is arranged within the air gap.613. The radial fan () according to claim 1 , characterized in that the material of the separating can () is an isolator or has a contact resistance greater than 10 Ohm.7140242025203050. The radial fan () according to claim 1 , characterized in that the shaft () claim 1 , on a first bearing () arranged in the bearing tube () and a second bearing () arranged in the bearing tube () spaced apart in the axial direction as relates to the ...

DYNAMIC BALANCING OF ADDITIVELY MANUFACTURED IMPELLERS

A method of manufacturing an impeller for a thermal management device includes partially curing a curable liquid in a curable liquid bath to form a first stage rotor, removing the first stage rotor from the curable liquid bath, the first stage rotor having excess curable liquid on a surface thereof, rotating the first stage rotor to displace the excess curable liquid radially outward from a rotational axis to compensate for imbalances in the first stage rotor, and fully curing the first stage rotor and at least a portion of the excess curable liquid to produce a second stage rotor that is more rotationally balanced than the first stage rotor. 1. A method for manufacturing an impeller for a thermal management device , the method comprising:partially curing a curable liquid in a curable liquid bath to form a first stage rotor;removing the first stage rotor from the curable liquid bath, the first stage rotor having excess curable liquid on a surface thereof;rotating the first stage rotor to displace the excess curable liquid radially outward from a rotational axis to compensate for imbalances in the first stage rotor; andfully curing the first stage rotor and at least a portion of the excess curable liquid to produce a second stage rotor that is more rotationally balanced than the first stage rotor.2. The method of claim 1 , wherein partially curing the curable liquid comprises exposing the curable liquid to a particular wavelength of light.3. The method of claim 1 , wherein fully curing the first stage rotor and at least a portion of the excess curable liquid comprises fully curing the first stage rotor and at least a portion of the excess curable liquid while rotating the first stage rotor and at least a portion of the excess curable liquid.4. The method of claim 1 , wherein fully curing the curable liquid includes exposing the curable liquid to a thermal energy source.5. The method of claim 1 , wherein fully curing the curable liquid includes exposing the curable ...

ROTATION PART OF ROTARY MACHINE AND METHOD OF MANUFACTURING THE SAME

There is provided a rotation part of a rotary machine, the rotation part including: a base unit including a surface constituting fluid channels; a plurality of blade units protruding from the base unit; a plurality of shroud segment support units connected to the plurality of blade units and extending in a parallel direction to the surface of the base unit; a shroud segment disposed between and bonded to adjacent shroud segment support units of the plurality of shroud segment support units; and a first reinforcing unit provided on an intersection portion between a blade unit of the plurality of blade units and a shroud segment support unit of the plurality of shroud segment support units, wherein a distance from a protruding direction center line of the blade unit to an end portion of the shroud segment support unit is greater than a maximum distance from the protruding direction center line of the blade unit to an end portion of the first reinforcing unit. 1. A rotation part of a rotary machine , the rotation part comprising:a base unit comprising a surface constituting fluid channels;a plurality of blade units protruding from the base unit;a plurality of shroud segment support units connected to the plurality of blade units and extending in a parallel direction to the surface of the base unit;a shroud segment disposed between and bonded to adjacent shroud segment support units of the plurality of shroud segment support units; anda first reinforcing unit provided on an intersection portion between a blade unit of the plurality of blade units and a shroud segment support unit of the plurality of shroud segment support units,wherein a distance from a protruding direction center line of the blade unit to an end portion of the shroud segment support unit is greater than a maximum distance from the protruding direction center line of the blade unit to an end portion of the first reinforcing unit.2. The rotation part of a rotary machine of claim 1 , wherein a first step ...

BALANCE PISTON WITH A SEALING MEMBER

A balance piston for a compressor is provided. The balance piston may include an annular body and a seal extending from an axial surface of the annular body. The annular body may be configured to be disposed about and coupled with a rotary shaft of the compressor. The seal may be configured to form a sealing engagement with at least one component of the compressor to prevent a flow of a process fluid from an impeller of the compressor to a seal cavity of the compressor. 1. A balance piston for a compressor , comprising:an annular body configured to be disposed about and coupled with a rotary shaft of the compressor; anda seal extending from an axial surface of the annular body and configured to form a sealing engagement with at least one component of the compressor to prevent a flow of a process fluid from an impeller of the compressor to a seal cavity of the compressor.2. The balance piston of claim 1 , wherein the annular body is integral with an impeller of the compressor.3. The balance piston of claim 1 , wherein the seal comprises a protrusion extending from the axial surface of the annular body.4. The balance piston of claim 3 , wherein the protrusion is configured to form a sealing engagement with a shaft seal assembly of the compressor to prevent the flow of the process fluid from the impeller to the seal cavity.5. The compressor of claim 4 , wherein the protrusion is configured to form the sealing engagement with a labyrinth seal of the shaft seal assembly.6. The compressor of claim 5 , wherein the protrusion and the labyrinth seal define a tortuous path therebetween.7. The compressor of claim 3 , wherein the protrusion extends annularly about the axial surface of the annular body.8. The compressor of claim 3 , wherein an inner radial surface and an outer radial surface of the protrusion are substantially parallel with one another.9. The compressor of claim 3 , wherein an inner radial surface of the protrusion is arcuate.10. The compressor of claim 3 , ...

Multi-stage impeller assembly for pump

In an aspect, there is provided a pump impeller assembly that includes a first impeller portion arranged to drive a fluid through a fluid conduit, a second impeller portion movable between a more-rotationally engaged position in which the second impeller portion has a first amount of rotational engagement with the first impeller portion, and a less-rotationally engaged position in which the second impeller portion has a second amount of rotational engagement with the first impeller portion that is less than the first amount of rotational engagement, and an actuator operatively connected to the second impeller portion and configured to drive movement of the second impeller portion between the more-rotationally engaged position and the less-rotationally engaged position based on a fluid property

CENTRIFUGAL ROTARY MACHINE

A flow path includes a return bend portion which guides a working fluid to an inside in the radial direction by reversing the working fluid discharged to an outside in a radial direction from an upstream-side impeller, and a guiding flow path which is connected to a downstream side of the return bend portion and leads the working fluid to the inside in the radial direction so as to guide the working fluid to the downstream-side impeller. In a return vane which is provided in the guiding flow path, a trailing edge is formed such that a second end portion on a second side in an axial direction is positioned closer to an inside in a radial direction than a first end portion on a first side in the axial direction. 1. A centrifugal rotary machine comprising:impellers which are provided in a plurality of stages along an axial direction and discharge a working fluid sucked from a first side in the axial direction to an outside in a radial direction of an axis; anda casing which is provided to surround the impellers and forms a flow path which leads the working fluid discharged from an upstream-side impeller positioned on the first side in the axial direction to a downstream-side impeller positioned on a second side in the axial direction, a return bend portion which guides the working fluid to an inside in the radial direction by reversing the working fluid discharged to an outside in the radial direction from the upstream-side impeller, and', 'a guiding flow path which is connected to a downstream side of the return bend portion and leads the working fluid to the inside in the radial direction so as to guide the working fluid to the downstream-side impeller,, 'wherein the flow path includes'}wherein the centrifugal rotary machine further comprises a plurality of return vanes which are provided in the guiding flow path guiding the working fluid in at least one impeller from among the impellers provided in the plurality of stages and which are provided at intervals in a ...

PUMP WITH HOUSING HAVING INTERNAL GROOVES

A pump includes an axial inducer. The axial inducer includes a housing that has an internal surface that defines an axial fluid passage. A rotor is disposed about a central axis in the fluid passage. The rotor includes at least one blade that defines at least one blade tip. The internal surface of the housing defines a plurality of grooves adjacent the at least one blade tip. The grooves are elongated in a circumferential direction.

Inverted Annular Side Gap Arrangement For A Centrifugal Pump

Various aspects of the disclosure are directed to providing structures that define a radial gap between an impeller and a pump casing element that facilitates minimizing the movement of fluid into the radial gap in a manner that lessens the impact, and consequent degradation, of the inner surface of the pump casing element by movement of abrasive particulates out of the radial gap, which is accomplished by providing a suction inlet arrangement of an impeller and pump casing element that are angled from the eye of the impeller to the outer periphery of the impeller in a direction away from the back shroud or drive side of the impeller and toward a first end of the pump casing in which fluid is introduced into the pump casing. 1. The suction inlet arrangement for a centrifugal pump , comprising: an axially extending fluid conduit having a first end with a first opening for introduction of fluid into the conduit and a second end with a second opening, a fluid pathway being defined between the first end and the second end; and', 'a radially extending wall that extends radially outwardly from the second end of the fluid inlet body to an outer radial point, the radially extending wall having an annular surface that faces outwardly in a direction away from the first end of the fluid inlet body and which slopes in a direction from the second end of the fluid conduit toward the outer radial point, the direction of the slope being toward the first end of the fluid inlet conduit; and, 'a fluid inlet body comprising,'}an impeller having a rear shroud and a front shroud axially spaced from the rear shroud, the front shroud having a circumferential opening defining an eye of the impeller and having an annular peripheral aspect radially spaced from the eye, the front shroud having an outward facing surface that extends at or from near the circumferential opening to the peripheral aspect of the front shroud and is oriented in a direction away from the rear shroud, the outward ...

ELECTRIC MOTOR DRIVEN LIQUID PUMP, IN PARTICULAR FOR THE FORCED LUBRICATION OF A MANUAL TRANSMISSION FOR MOTOR VEHICLES

An electric motor driven liquid pump, which can be used for forced lubrication of a motor vehicle manual transmission, has a housing flange-mountable on a fluid container via a flange surface. A stator including a motor winding and a magnetic rotor are incorporated in the housing for conveying liquid. The housing is formed of multiple parts including a pump housing section which has fluid inlets and outlets, a stator housing section which holds the stator and together with the pump housing section, delimits an electronics chamber in which the rotor is arranged, and a motor housing section which together with the stator housing section delimits an electronic chamber in which at least the stator is located. A sealing element seals the flange surface to the fluid container, separates the fluid chamber and the electronic chamber, and seals the latter from the environment. 1. An electric motor driven liquid pump , for forced lubrication of a manual transmission for motor vehicles , comprising a housing , which can be flange-mounted on a liquid container by way of a flange surface external to the pump and has a liquid inlet and a liquid outlet and in which a stator having a motor winding and a magnetic rotor for conveying liquid are received , the housing having a multi-part construction with a pump housing section which has the liquid inlet and the liquid outlet , a stator housing section which carries the stator and together with the pump housing section bounds a liquid chamber in which the rotor is arranged , and a motor housing section which together with the stator housing section bounds an electronics chamber in which at least the stator is disposed , and wherein a sealing element is provided , which simultaneously seals at the flange surface external to the pump with respect to the liquid container , separates the liquid chamber from the electronics chamber and seals the electronics chamber relative to the environment.2. An electric motor driven liquid pump ...

Two-Stage Centrifugal Pump

A two-stage centrifugal pump comprising: a first stage provided with a first impeller mounted on a first shaft and a second stage provided with a second impeller mounted on a second shaft distinct from said first shaft; and hydraulically connected to the first stage, and the stages mounted in a single support body, provided with a first chamber and a second chamber in which said first impeller and respectively said second impeller are contained; said support body comprises a case made in a single body therewith and provided with a first cavity and a second cavity that define respective portions of said first chamber and said second chamber; in at least one of either said first cavity or said second cavity one or more adaptors are mounted, to adapt the geometry of the first chamber and/or the second chamber to the type and size of impeller adopted. 1. A two-stage centrifugal pump comprising:a first stage provided with a first impeller; anda second stage provided with a second impeller and hydraulically connected to the first stage;the first impeller being mounted on a first shaft and the second impeller being mounted on a second shaft distinct from said first shaft;wherein the first stage and the second stage are located in a support body, the support body being provided with a first chamber and a second chamber in which the respective first impeller and the second impeller are contained; andwherein the support body comprises a single casing provided with a first cavity and a second cavity that each define respective portions of said first chamber and said second chamber; andwherein in at least one of either the first cavity or the second cavity, one or more adaptors are mounted, in use to adapt the geometry of the first chamber and/or the second chamber to the type and size of impeller adopted.2. A pump according to claim 1 , wherein said first shaft and said second shaft have respective axes of rotation arranged parallel to each other.3. A pump according to either ...

FLUID PUMP

The present invention relates to a fluid pump having an improved performance. The pump comprises an impeller, volute housing, inner housing geometry, and an adapter. The impeller is configured to generate fluid flow velocity. The volute housing is configured to improve fluid pump performance while reducing power consumption, the volute housing comprises the inner housing geometry. The inner housing geometry is configured to convert the fluid flow velocity that has been generated into pressure. The adapter is designed to protect the unconnected end of the drive shaft and reduce the negative effects of shaft deflection. The adapter also has a structural rib geometry which is configured to provide superior structural integrity at a minimal mass. 1. A fluid pump having an improved performance , said pump comprising: i. a hub profile;', 'ii. an outer diameter;', 'iii. an impeller eye centrally located on said impeller and configured to connect to one end of a drive shaft;', 'iv. a plurality of impeller blades connected to said hub profile and forming a plurality of flow channel areas interposed between two said impeller blades of said plurality of impeller blades; and', 'v. wherein each said flow channel area of said plurality of flow channel areas gradually diverges from said impeller eye to said outer diameter;, 'a. an impeller configured to generate fluid flow velocity, said impeller comprisingb. a volute housing configured to improve fluid pump performance while reducing power consumption, said volute housing having a fluid intake, a fluid discharge, and an inner housing geometry; i. a volute area having a secondary passage and circulation zone;', 'ii. said secondary passage interposed between said volute area and a collection zone, said secondary passage configured to allow volute area fluid reentry during priming and non-reentry after full prime is established;', 'iii. a diffuser located at the periphery of said volute area and configured to alleviate wasted energy ...

MAGNETIC LEVITATION CENTRIFUGAL PUMP

A magnetic levitation centrifugal pump, comprises: one hollow body provided with at least one inlet connector and with at least one outlet connector for blood; one rotor element, housed inside the hollow body and comprising at least one magnetic portion, where the rotor element can be commanded in rotation about an axis of rotation, without contact, by a stator element associable with the hollow body, the rotor element comprising at least one revolving body, which defines an upper surface supporting a plurality of blades which are adapted to convey blood towards the outlet connector; where the upper surface has a substantially concave shape and where the revolving body comprises at least one through hole which is positioned along the axis of rotation. 1. A magnetic levitation centrifugal pump comprising:at least one hollow body provided with at least one inlet connector and with at least one outlet connector for blood; andat least one rotor element, housed inside said at least one hollow body and comprising at least one magnetic portion, where said at least one rotor element can be commanded in rotation about an axis of rotation, without contact, by a stator element associable with said at least one hollow body, said at least one rotor element comprising at least one revolving body, which defines an upper surface supporting a plurality of blades which are adapted to convey blood towards said at least one outlet connector; whereinsaid upper surface has a substantially concave shape and said at least one revolving body comprises at least one through hole which is positioned along said axis of rotation.2. The magnetic levitation centrifugal pump according to claim 1 , whereinsaid upper surface has a curvilinear extension to define a saddle which is adapted to receive the blood entering said at least one inlet connector.3. The magnetic levitation centrifugal pump according to claim 2 , whereinsaid at least one hole has a first opening facing said upper surface.4. The ...

DRAIN PUMP AND A CLOTHES DRYER HAVING A DRAIN PUMP

A drain pump and a clothes dryer having a drain pump are provided. The drain pump may include a pump motor; an impeller including a hub, an impeller shaft that extends from a center of the hub and is connected to a rotational shaft of the pump motor, and at least one blade that extends from an outer circumferential surface of the impeller shaft; a housing including an impeller hole, through which the impeller may pass, and a space in which the pump motor may be accommodated; and a pump case coupled to a bottom surface of the housing. The pump case may have a suction hole to suction in cleaning water. The suction hole may be defined at a position corresponding to the impeller, and the pump case may include a shaft shield that extends from an edge of the suction hole in a central direction of the suction hole or toward a central portion of the suction hole to cover a lower end of the impeller shaft. 1. A drain pump , comprising:a pump motor; a hub;', 'an impeller shaft that extends from a center of the hub and is connected to a rotational shaft of the pump motor; and', 'at least one blade that extends from an outer circumferential surface of the impeller shaft;, 'an impeller including an impeller hole, through which the impeller passes; and', 'a space in which the pump motor is accommodated; and', 'a pump case coupled to a bottom surface of the housing, wherein the pump case has a suction hole to suction in cleaning water, wherein the suction hole is defined at a position corresponding to the impeller, and wherein the pump case includes a shaft shield that extends from an edge of the suction hole toward a central portion of the suction hole to cover a lower end of the impeller shaft., 'a housing including2. The drain pump according to claim 1 , further comprising:a pump motor seat stepped from a bottom of the housing, such that the pump motor is seated thereon; anda discharge port that extends from a predetermined position which is spaced apart from the pump motor ...

HYDRODYNAMIC THRUST BEARINGS FOR ROTARY BLOOD PUMP

A rotary blood pump includes a casing defining a pumping chamber. The pumping chamber has a blood inlet and a tangential blood outlet. One or more motor stators are provided outside of the pumping chamber. A rotatable impeller is within the pumping chamber and is adapted to cause blood entering the pumping chamber to move to the blood outlet. The impeller has one or more magnetic regions. The impeller is radially constrained in rotation by magnetic coupling to one or more motor stators and is axially constrained in rotation by one or more hydrodynamic thrust bearing surfaces on the impeller. 126-. (canceled)27. A rotary blood pump comprising:a pumping chamber in fluid communication with a primary fluid flow path;an impeller rotatable on an axis within the pumping chamber and having a plurality of upper surface areas circumferentially disposed about the axis, each upper surface area facing an interior wall of the pumping chamber as the impeller rotates, each of at least a diametrically opposed pair of the upper surface areas being configured with an inclined surface area tapered in an upward axial direction and defining a hydrodynamic bearing surface having a lower pressure fluid entrance end and a higher pressure fluid exit end causing an increase in pressure acting axially downwardly on the impeller as the impeller rotates; andeach of the plurality of upper surface areas further including a pressure relief surface downstream of the higher pressure fluid exit, the pressure relief surface being configured to define a secondary fluid flow path different than the primary fluid flow path, the higher pressure entrance end of the downstream pressure relief surface being spaced from the higher pressure fluid exit end of the hydrodynamic bearing surface by a bridging surface area of the same respective upper surface area therebetween.28. The rotary blood pump of claim 27 , wherein each raised body is configured with two straight sidewalls of unequal length which intersect ...

PUMP ASSEMBLY

A pump assembly includes pump casing (), an impeller () rotatably arranged in the pump casing, a two rotation directions (A, B) electrical drive motor connected to drive the impeller and a valve arrangement () arranged in the pump casing to switch a flow path downstream of the impeller between two exits () of the pump casing, depending on a rotation direction of the impeller. The valve arrangement includes a first movable valve element () at a first exit () and a second movable valve element () at a second exit (). The first valve element partly closes the first exit in a closed position and is movable into an opened position by flow in the first rotation direction and the second valve element partly closes the second exit in a closed position and is movable into an opened position by flow in the second rotation direction (B). 1. A pump assembly comprising:a pump casing;an impeller rotatably arranged in the pump casing;an electrical drive motor connected to the impeller for selectively driving the impeller in two rotation directions; anda valve arrangement arranged in the pump casing and configured to switch a flow path downstream of the impeller between two exits formed in the pump casing, depending on a rotation direction of the impeller, the valve arrangement comprising a first movable valve element at a first of the two exits and a second movable valve element at a second of the two exits, wherein the valve elements in an idle position are each located in a closed position, in which the first valve element at least partly closes the first exit, and the second valve element at least partly closes the second exit, and the first valve element is movable into an opened position by way of a flow caused by the impeller in a first rotation direction, and the second valve element is movable into an opened position by way of a flow caused by the impeller in a second rotation direction.2. A pump assembly according to claim 1 , wherein the first valve element and the ...

Slurry Pump

In a rotor in rotor configuration, a pump has inward projections on an outer rotor and outward projections on an inner rotor. The outer rotor is driven and the projections mesh to create variable volume chambers. The outer rotor may be driven in both directions. In each direction, the driving part (first inward projection) of the outer rotor contacts a sealing surface on one side of an outward projection of the inner rotor, while a gap is left between a sealing surface of the other side of the outward projection and a second inward projection. The gap may have uniform width along its length in the radial direction, while in a direction parallel to the rotor axis it may be discontinuous or have variable size to create flow paths for gases. 1. A fluid transfer device comprising:a housing having an inward facing surface;an outer rotor secured for rotation about an outer rotor axis that is fixed in relation to the housing, the outer rotor having inward projections, the outer rotor being arranged to be driven in operation by a drive shaft;an inner rotor secured for rotation about an inner rotor axis that is fixed in relation to the housing, the inner rotor axis being inside the outer rotor, the inner rotor having outward projections, the outward projections in operation meshing with the inward projections to define variable volume chambers as the inner rotor and outer rotor rotate; fluid transfer passages in a portion of the housing to permit flow of fluid into and out of the variable volume chambers; andeach outward projection having a first sealing surface and a second sealing surface circumferentially opposed to each other for respective engagement with corresponding sealing surfaces of adjacent inward projections such that in an operational configuration in which the outer rotor is driven in a first direction, the first sealing surface seals against a first corresponding inward projection with a first gap between at least part of the second sealing surface and a ...

Thrust Bearing System And Method For Operating The Same

A fluid machine and method of operating the same comprises a pump portion, turbine portion and a center bearing therebetween. The method includes communicating lubricant to a thrust bearing cavity disposed between a turbine impeller and a thrust wear ring, communicating lubricant from the thrust bearing cavity to a center axial shaft passage of a shaft through an impeller passage of the turbine impeller, communicating lubricant through the axial shaft passage to a bearing clearance between a shaft and a center bearing through a first radial shaft passage and a second radial shaft passage and communicating lubricant through the bearing clearance to a pump impeller chamber and a turbine impeller chamber.

Magnetically levitated rotor and a rotary machine with such a rotor

A magnetically levitated rotor includes a magnetically effective core and a sheathing made of a thermoplastically processible fluoropolymer. The sheathing completely encloses the magnetically effective core. The magnetically effective core comprises at least one permanent magnet and each permanent magnet has a metallic coating for protection against acidic or chemically aggressive substances. A plastic coating is disposed between the metallic coating and the sheathing, and includes a polymer belonging to the family of parylenes.

CENTRIFUGAL FLUID MACHINE

A centrifugal fluid machine includes an impeller () that has a front shroud () arranged on one side in an axial direction, a rear shroud () arranged on the other side in the axial direction, and a plurality of blades () provided side by side in a circumferential direction between the front shroud and the rear shroud and is rotatably supported within a casing (); a suction passage (A) that allows a fluid to be sucked therethrough in the axial direction toward the impeller with the rotation of the impeller; a discharge passage (B) that allows a fluid delivered under pressure by the impeller with the rotation of the impeller to be discharged in a direction intersecting the axial direction of the impeller; and a first flow path (A) that communicates with the discharge passage, leads to the suction passage through a gap between the casing and the rear shroud, and an opening (Aa) that opens toward the downstream side of the suction passage in a suction direction of a fluid. The opening area of the opening is set so that the ejection speed (Vs) of a fluid ejected from the opening to the suction passage is matched with the suction speed (V) of a fluid sucked into the suction passage. 1. A centrifugal fluid machine comprising:a casing having a hollow shape;an impeller that is rotatably supported within the casing and has an annular member arranged on one side in an axial direction, a disk member arranged on the other side in the axial direction, and a plurality of blades provided side by side in a circumferential direction between the annular member and the disk member;a suction passage that allows a fluid to be sucked therethrough in the axial direction from the center of the annular member in the impeller with the rotation of the impeller;a discharge passage that allows a fluid delivered under pressure by the impeller with the rotation of the impeller to be discharged in a direction intersecting the axial direction of the impeller; anda flow path that communicates with the ...

Impeller having blade having blade surface made up of line elements and method of machining the impeller

A blade of an impeller has a blade surface made up of line elements. The line elements forming the blade surface are not parallel to each other. A relationship between a twist angle of the line elements and a distance between the origin and an intersection of a central line of the impeller and an extension line of a Z-axis projection line obtained by projecting each of the line elements onto a Z-axis projection plane is represented by a curve.

PRESSURE REDUCING ROTOR ASSEMBLY FOR A PUMP

A rotor assembly for a centrifugal pump includes a rotor and a rotor cover, defining a fluid chamber therebetween, and having openings or channels that are provided in either the rotor cover or the rotor, or both, to direct fluid from the fluid chamber into the rotor or rotor cover of the rotor assembly to provide reduction of increased pressure that is experienced within the fluid chamber, especially at or near the center of the fluid chamber.

Turbomachine

A turbomachine includes a housing and an electric motor in the housing. The electric motor has a shaft, a stator, and a rotor on the shaft. At least one impeller is arranged in a pump housing and driven by the shaft, the impeller having at least one ring of rotor blades delimiting a ring of blade chambers. A side channel is arranged in the pump housing opposite the ring of blade chambers and extends from the pump inlet as far as the pump outlet. A ramp is arranged at an end of the side channel in a radially inner half of the side channel. The ramp starts from a channel bottom, rises in a flow direction as far as the height of the pump housing wall, and merges with its radially outer half into the pump outlet. 16-. (canceled)7. A turbomachine comprising:{'b': '1', 'a housing ();'}{'b': 2', '1, 'claim-text': [{'b': '5', 'a shaft (),'}, {'b': '3', 'a stator (), and'}, {'b': 4', '5, 'a rotor () arranged on the shaft ();'}], 'an electric motor () arranged in the housing (), the electric motor comprising{'b': 7', '8', '9', '16', '10', '9', '13', '14, 'a pump housing () having a pump bottom (), a pump cover (), a pump housing wall () and a spacer ring (), the pump cover () having a pump inlet () and a pump outlet ();'}{'b': 6', '7', '5', '6', '11, 'at least one impeller () arranged in the pump housing () and driven by the shaft (), the at least one impeller () having at least one ring of rotor blades () that delimit a ring of blade chambers;'}{'b': 12', '7', '12', '12', '13', '14, 'a side channel () arranged in the pump housing (), the side channel () being arranged opposite the ring of blade chambers, the side channel () extending from the pump inlet () as far as the pump outlet (); and'}{'b': 15', '12', '18', '12', '15', '17', '16', '12', '19', '14, 'a ramp () arranged at an end of the side channel () in a radially inner half () of the side channel (), said ramp () starting from a channel bottom (), rising in a flow direction as far as the height of the pump housing wall ...

Coolant pump with heat sinking to coolant

A vehicle coolant pump with heat protection for the internal electronics and circuit boards for operation of the coolant pump. Gap fillers positioned adjacent said electronics and circuit boards transfer heat to the coolant fluid in the engine.

BUSHING ANTI-ROTATION SYSTEM AND APPARATUS

A bushing anti-rotation system and apparatus. A bushing anti-rotation system includes an impeller and diffuser stage including a rotatable shaft extending longitudinally through the stage, the diffuser having an inner diameter defining a bore, a bearing set including a bushing pressed into the inner diameter, and a rotatable sleeve inward of the bushing, and means for wedging the bushing against the inner diameter of the diffuser, wherein the means for wedging provides a mechanical lock against rotation of the bushing. The means for wedging the bushing against the diffuser includes one of a key wedged between an eccentric cavity in the diffuser and a notch in the bushing, a pin protruding from the diffuser against a flattened portion of the bushing, a square-shaped bushing secured into a square-shaped bore, a bent retaining ring having a bent end that wedges against a diffuser groove wall, or a combination thereof. 1. A bushing anti-rotation system comprising:a centrifugal pump stage comprising an impeller and a diffuser, the impeller secured to a rotatable shaft extending longitudinally through the centrifugal pump stage;the diffuser having an inner diameter defining a bore; a bushing pressed into the inner diameter of the diffuser; and', 'a rotatable sleeve inward of the bushing, the rotatable sleeve keyed to the rotatable shaft; and, 'a bearing set comprisingmeans for wedging the bushing against the inner diameter of the diffuser, wherein the means for wedging provides a mechanical lock against rotation of the bushing.2. The bushing anti-rotation system of claim 1 , wherein the means for wedging the bushing against the inner diameter of the diffuser comprises a key extending at least partially into an eccentric cavity in the inner diameter of the diffuser and at least partially into a notch in an outer diameter of the bushing.3. The bushing anti-rotation system of claim 1 , wherein the means for wedging the bushing against the inner diameter of the diffuser ...

Compact centrifugal pump with magnetically suspended impeller

A centrifugal fluid pump with a fully magnetically suspended rotor to improve blood compatibility when pumping blood is disclosed. The pump stabilizes radial displacements of a disc-like rotor with active control through separate electric motor and magnetic bearings to improve the pump's critical performances including device packaging size, system simplicity and reliability, stiffness and other dynamic performances of suspension, power efficiency, and others.

Wastewater Pump

Wastewater pump comprising a reversible motor () driving a rotor () equipped with blades (). 1. Wastewater pump comprising a reversible motor driving a rotor equipped with blades , housed in a pump chamber with an axial inlet (EA) and tangential outlet (ST) , the pump being characterised in that{'b': 160', '165', '170', '167, 'the rotor () is a disc () bearing blades () each mounted on a radial spindle () borne by the rotor and pivoting between an active position raised in the forward direction of rotation (D) of the rotor and a position retracted against the disc for the reverse direction (R) of rotation of the rotor,'}{'b': 170', '171', '175', '172', '160', '172', '160', '171', '165, 'each blade () being composed of a plate () bearing an articulation node () engaged on the spindle and a cutter () on the back of the plate forming a prop supporting the plate in the active position when the rotor () is rotating in the forward direction (D), and the cutter () projecting in the peripheral direction when the rotor () turns in the reverse direction (R), the plate () being applied against the disc (),'}{'b': 130', '135, 'a fixed ring () surrounds the plate and carries at least one cutter ().'}2165166167171175. Wastewater pump according to claim 1 , characterised in that the disc () of the rotor includes windows () each housing an articulation spindle () of a plate () receiving the articulation node () of the plate.3175171171165a. Wastewater pump according to claim 2 , characterised in that the articulation node () extends over the centre of the edge () of the plate () claim 2 , the node being offset with respect to the plane of the plate so that this latter comes to be flat on the disc () when it is in the lowered position.4175166175166166160a. Wastewater pump according to claim 2 , characterised in that the node () and its window () are dimensioned so that in the raised position and in the lowered position the node () is supported against the respective downstream edge ...

BLADE MEMBER FOR FLUID PUMP

The object is to obtain reasonably a blade member for a pump having superior fluid transporting performance. A blade member for a fluid pump includes a cylindrical portion formed around a rotational axis, a plurality of base portions protruding radially outwardly of the rotational axis from one end portion of the cylindrical portion along the rotational axis and provided along a circumferential direction, a bent portion bent from each of the respective base portion in one direction along the rotational axis, and a hole portion provided in a border portion between root portions of the adjacent base portions. A rising edge portion extending from the hole portion to a leading end of the bent portion and an overhang edge portion extending from the hole portion to a leading end of the base portion are formed by a common cut portion. 1. A blade member for a fluid pump , comprising:a cylindrical portion formed around a rotational axis;a plurality of base portions protruding radially outwardly of the rotational axis from one end portion of the cylindrical portion along the rotational axis and provided along a circumferential direction;a bent portion bent from each of the respective base portion in one direction along the rotational axis; anda hole portion provided in a border portion between root portions of the adjacent base portions;wherein a rising edge portion extending from the hole portion to a leading end of the bent portion and an overhang edge portion extending from the hole portion to a leading end of the base portion are formed by a common cut portion.2. The blade member for a fluid pump according to claim 1 , wherein:the bent portion includes, at a leading end portion of the rising edge portion, a rising leading end edge portion intersecting this rising edge portion;the base portion includes, at a leading end portion of the overhang edge portion, an overhang leading end edge portion intersecting this overhang edge portion; andat the edge portion of whichever ...

CENTRIFUGAL PUMP

A centrifugal pump includes a rotating blade member including an impeller member and a rotor magnet provided under the impeller member, a metallic main body casing in which the rotating blade member is accommodated, and a coil portion configured to rotate the rotating blade member. The coil portion is disposed to be located in a periphery of the rotor magnet. The metallic main body casing includes an upper main body casing, and a lower main body casing which is fixed to the upper main body casing. The lower main body casing includes a blade accommodating portion, which extends horizontally from an outer periphery of the lower main body casing to an inner periphery side, and a rotor magnet accommodating portion, which extends downwardly from the blade accommodating portion. 1. A centrifugal pump comprising:a rotating blade member including an impeller member and a rotor magnet provided under the impeller member,a metallic main body casing in which the rotating blade member is accommodated, anda coil portion configured to rotate the rotating blade member, wherein the coil portion is disposed to be located in a periphery of the rotor magnet, an upper main body casing, and', 'a lower main body casing which is fixed to the upper main body casing,, 'the metallic main body casing including;'} a blade accommodating portion, which extends horizontally from an outer periphery of the lower main body casing to an inner periphery side, and', 'a rotor magnet accommodating portion, which extends downwardly from the blade accommodating portion., 'the lower main body casing including;'}2. The centrifugal pump of claim 1 , whereinthe lower main body casing includes a metallic press molding article, andthe lower main body casing includes a nonmagnetic metal.3. The centrifugal pump of claim 2 , wherein the nonmagnetic metal includes an austenitic stainless steel.4. The centrifugal pump of claim 3 , wherein the austenitic stainless steel includes 10.5% or more of the content of nickel.5 ...

PUMP SHELTER

A pump shelter including a housing, the housing having insulating structures for insulating an interior of the housing from external elements. A pump system is positioned within the housing and operable for pumping a fluid. A heating system is also positioned within the housing for heating the interior of the housing. A lighting system provides lighting for the interior of the housing. A power supply system provides power to at least one of the pump system, the heating system and the lighting system. Hose elements are removably connectable to the pump system. The pump shelter is readily and quickly available for rapid deployment in a fire or flooding scenario under various climate conditions. 111-. (canceled)12. A pump shelter comprising:a housing, the housing comprising insulating structures for insulating an interior of the housing from external elements;a pump system positioned within the housing and operable for pumping a fluid;a heating system positioned within the housing for heating the interior of the housing;a lighting system positioned within the housing for lighting the interior of the housing;a power supply system providing power to at least one of the pump system, the heating system and the lighting system; anda plurality of hose elements removably connectable to the pump system.13. The pump shelter according to claim 12 , further comprising an air pump removably connectable to a hose element of the plurality of hose elements extending outside the housing and configured to circulate air through the external hose element to prevent freezing of any fluids located therein.14. The pump shelter according to claim 12 , further comprising a heating wire system connected to a hose element of the plurality of hose elements extending outside the housing and configured to heat the external hose element to prevent freezing of any fluids located therein.15. The pump shelter according to claim 12 , wherein the power supply system comprises a removable fuel reservoir ...

PUMP FOR THE CONVEYANCE OF A FLUID WITH VARYING VISCOSITY

A pump includes a housing having an inlet and an outlet configured to convey fluid, an impeller configured to convey the fluid from the inlet to the outlet, the impeller being arranged on a rotatable shaft, and a balance drum configured to relieve axial thrust. The balance drum includes a rotor rotationally fixedly connected to the shaft, the rotor having a high and low pressure sides, a stator stationary with respect to the housing, a relief passage extending between the rotor and the stator from the high pressure side up to the low pressure side of the rotor, a return passage connecting the low pressure side of the rotor to the inlet. An intermediate passage opens into the relief passage between the high pressure side and the low pressure side of the rotor. A blocking member is configured to influence the flow through the intermediate passage. 1. A pump for conveying a fluid with varying viscosity , comprising:a housing having an inlet and an outlet configured to convey the fluid;at least one impeller configured to convey the fluid from the inlet to the outlet, the impeller being arranged on a rotatable shaft; anda balance drum configured to relieve axial thrust, the balance drum comprising a rotor rotationally fixedly connected to the shaft, the rotor having a high pressure side and a low pressure side, a stator configured to be stationary with respect to the housing, and a relief passage extending between the rotor and the stator from the high pressure side up to the low pressure side of the rotor;a return passage connecting the low pressure side of the rotor to the inlet;at least one intermediate passage opening into the relief passage between the high pressure side and the low pressure side of the rotor; anda blocking member configured to influence the flow through the intermediate passage.2. A pump in accordance with claim 1 , wherein the relief passage comprises a ring space surrounding the shaft and into which the intermediate passage opens.3. A pump in ...

FAN MOTOR AND MANUFACTURING METHOD OF THE SAME

A fan motor according to an embodiment of the present invention may include: an impeller a hub connected to a rotary shaft and at least one blade formed on the outer surface of the hub; a shroud surrounding the outer circumference of the impeller; and a coating layer coated on the inner circumferential surface of the shroud. The coating layer may include: a polymer having strength lower than the strength of the blade; and a plurality of beads mixed with the polymer and having strength higher than the strength of the polymer. 1. A fan motor comprising:an impeller including a hub connected to a rotary shaft and at least one blade disposed at an outer surface of the hub;a shroud that surrounds an outer circumference of the impeller; anda coating layer provided at an inner circumferential surface of the shroud,wherein the coating layer has areas having different thicknesses formed by grinding the blades.2. The fan motor of claim 1 , wherein the areas of the coating layer include an area whose thickness is varied in a circumferential direction of the impeller by grinding of the blade.3. The fan motor of claim 1 , wherein a height of the coating layer is higher than a height of the impeller.4. The fan motor of claim 1 , wherein the coating layer include:a first area having a first thickness; anda second area having a second thickness less than the first thickness and toward the impeller.5. The fan motor of claim 4 , wherein the areas of the coating layer further include a third area having the first thickness claim 4 , andwherein the second area is disposed between the first area and the third area with respect to an air flow direction.6. The fan motor of claim 4 , wherein the first thickness is greater than or equal to a minimum distance between the inner circumferential surface of the shroud and the blade.7. The fan motor of claim 4 , wherein the second area includes a ground surface ground by the blade.8. The fan motor of claim 4 , wherein the second thickness is ...

HEAT PUMP AND DISHWASHER COMPRISING THE SAME

A heat pump for a dishwasher includes a pump casing, a motor () having a rotatable shaft extended into a chamber of the pump casing, an impeller () disposed within the chamber, a heating assembly () and a pressure switch assembly (). The heating assembly includes a heating pipe () disposed in the chamber, a fuse (), and a heater wire disposed in the heating pipe. The heating pipe includes an arc-shaped portion (), and first and second linear portions (). The fuse is disposed in at least one of the first and second linear portions and is remote from the arc-shaped portion, and an extending part () of the impeller is encircled by and spaced apart from the arc-shaped portion. A dishwasher including the heat pump is also provided. 1. A heat pump for a dishwasher , comprising:a pump casing having a chamber defined with an inlet and an outlet;a motor connected with the pump casing and having a rotatable shaft extended into the chamber;an impeller disposed within the chamber and arranged on the rotatable shaft, which comprises a body part and an extending part having a diameter smaller than that of the body part;a heating assembly comprising a heating pipe disposed in the chamber, a fuse, and a heater wire disposed in the heating pipe, wherein the heating pipe comprises an arc-shaped portion defining a first end and a second end, a first linear portion defining an upper end and a lower end connected with the first end of the arc-shaped portion, and a second linear portion defining an upper end and a lower end connected with the second end of the arc-shaped portion, the upper ends of the first and second linear portions are extended out of the pump casing, the fuse is disposed in at least one of the first and second linear portions and is remote from the arc-shaped portion, and the extending part is encircled by and spaced apart from the arc-shaped portion; anda pressure switch assembly arranged on an outer wall of the pump casing and connected with the heating assembly.2. ...

Rotary Impeller for Mixing and Grinding Materials

A rotary impeller having a solid disk-shaped body with a center bore, a first major face, an opposed major face, and an outer peripheral side edge face that is circular in plan and that extends along an outer diameter of the body is provided. A plurality of separate, circumferentially-spaced apart, radially-extending grooves are formed in the first major face, and each of the grooves extends through the outer peripheral side edge face and is of a depth that terminates a spaced distance from the opposed major face of the disk-shaped body such that the grooves do not extend fully through the disk-shaped body. An array of separate, upstanding, circumferentially-spaced teeth project from the first major face adjacent the grooves along the outer peripheral side edge face of the disk-shaped body. 1. A rotary impeller , comprising:a solid disk-shaped body having a center bore, a first major face, an opposed major face, and an outer peripheral side edge face that is circular in plan and that extends along an outer diameter of said disk-shaped body;a plurality of separate, circumferentially-spaced apart, radially-extending grooves formed in said first major face, each of said grooves extending through the outer peripheral side edge face of said disk-shaped body and being of a depth that terminates a spaced distance from said opposed major face of the disk-shaped body such that said grooves do not extend fully through said disk-shaped body; andan array of separate, upstanding, circumferentially-spaced teeth that project from said first major face adjacent said grooves along said outer peripheral side edge face of said disk-shaped body.2. A rotary impeller according to claim 1 , wherein said array of teeth form part of a surface of said outer peripheral side edge face of said disk-shape body.3. A rotary impeller according to claim 2 , wherein each of said grooves has a pair of side edges that extend to said outer peripheral side edge face of said disk-shaped body and that are ...

FLUID DELIVERY MODULE

A fluid delivery module includes a housing with a housing interior volume, the housing defining a first brush compartment and a second brush compartment within the housing interior volume; an inlet which introduces fluid into the housing interior volume; an outlet which discharges fluid from the housing interior volume; a fluid pump within the housing interior volume and having a pump section and a motor assembly which receives electric power through a first carbon brush and a second carbon brush such that the first carbon brush is received within a first carbon brush holder of the motor assembly and the second carbon brush is received within a second carbon brush holder of the motor assembly; and a filter within the housing interior volume which circumferentially surrounds the fluid pump. The first brush compartment encloses the first carbon brush holder and the second brush compartment encloses the second carbon brush holder. 1. A fluid delivery module comprising:a housing extending along a pump axis such that said housing defines a housing interior volume, said housing defining a first brush compartment and a second brush compartment within said housing interior volume;an inlet which introduces fluid into said housing interior volume;an outlet which discharges fluid from said housing interior volume;a fluid pump within said housing interior volume, said fluid pump having a pump section and a motor assembly which rotates about said pump axis such that rotation of said motor assembly causes said pump section to pump fuel from said inlet to said outlet, wherein said motor assembly receives electric power through a first carbon brush and a second carbon brush such that said first carbon brush is received within a first carbon brush holder of said motor assembly and said second carbon brush is received within a second carbon brush holder of said motor assembly; anda filter within said housing interior volume which circumferentially surrounds said fluid pump such that ...

Pumping and comminution device, method of comminuting and heating an inflow material, and use of same

A pumping and comminution device is disclosed that includes at least one submersible pump located in a container that is suitable for receiving and inflow material and a drive for driving the submersible pump. In said device, the at least one submersible pump comprises an impeller located in a submersible pump housing, said submersible pump housing having a suction connection for suctioning the inflow material into the submersible pump. Tools are located on the inner face of the submersible pump housing and/or the impeller, allowing solids contained in the inflow material to be comminuted.

ENDWALL COOLING SYSTEM

An air distribution system for cooling a component in a heated gas environment may be provided, where the air distribution system includes a wall and a plate. The wall includes an inner surface, an outer surface configured to be exposed to the heated gas environment, and a protrusion extending from the inner surface of the wall. The plate is fixedly coupled to the protrusion and is space apart from the inner surface of the wall. The plate includes an outer edge. A passage is defined between the plate and the inner surface of the wall. The inlet of the passage is defined by the outer edge of the plate. 1. An air distribution system for cooling a component in a heated gas environment of a gas turbine engine , comprising:a wall comprising an inner surface, an outer surface configured to be exposed to the heated gas environment, and a protrusion extending from the inner surface of the wall; anda plate spaced apart from the inner surface of the wall, the plate comprising an outer edge, the plate fixedly coupled to the protrusion, wherein a passage is defined between the plate and the inner surface of the wall, and wherein an inlet of the passage is defined by the outer edge of the plate.2. The air distribution system of claim 1 , wherein the wall comprises an opening extending between the inner surface and the outer surface of the wall claim 1 , the opening defining an outlet of the passage.3. The air distribution system of claim 2 , wherein the opening of the wall is arranged proximate to the protrusion.4. The air distribution system of claim 2 , wherein the opening is positioned on the wall so as to maximize distance between the outer edge of the plate and the opening of the wall.5. The air distribution system of claim 1 , wherein the protrusion is fixedly coupled to a center of the plate.6. The air distribution system of claim 1 , wherein the protrusion is fixedly coupled to a portion of the outer edge of the plate.7. The air distribution system of claim 1 , wherein ...

Turbopump with a single piece housing and a smooth enamel glass surface

A turbopump such as a liquid oxygen (LOX) turbopump for a liquid rocket engine is formed using a metal additive manufacturing process in which a single-piece impeller is formed within a single piece housing, the impeller being trapped within the single piece housing. The impeller is formed with an axial bore in which a shaft is inserted after the impeller and housing have been formed. The turbopump includes a protective coating that forms a reaction resistant surface on the base metal in areas of the base metal that are exposed to an oxidizer during pumping. The protective coating may be an enamel glass, a superalloy layer beneath an enamel glass layer, a composite layer of a mixture of enamel glass and superalloy, a composite mixture of oxide and superalloy, or a composite layer of a mixture of enamel glass, superalloy, and oxide.

IMPELLER FOR CENTRIFUGAL FAN AND CENTRIFUGAL FAN

An impeller for a centrifugal fan includes a main plate having a disc shape, a plurality of blades arranged along a circumferential direction about a center part of the main plate, and an outer ring having a ring shape connecting the respective blades. The outer ring is connected to tip end portions of the respective blades at a side of a fluid discharge opening, and each of the blades has a shape which is bent in a rotating direction of the impeller in a vicinity of the tip end portion. 1. An impeller for a centrifugal fan , comprising:a main plate having a disc shape;a plurality of blades arranged along a circumferential direction about a center part of the main plate; andan outer ring having a ring shape connecting the respective blades,wherein the outer ring is connected to tip end portions of the respective blades at a side of a fluid discharge opening, andwherein each of the blades has a shape which is bent in a rotating direction of the impeller in a vicinity of the tip end portion.2. The impeller according to claim 1 ,wherein each blade is a backward inclined blade and has a blade thickness which is substantially uniform from a side of a fluid suction opening to the side of the fluid discharge opening.3. The impeller according to claim 1 ,wherein a size of the outer ring in an upper-lower direction ranges from one to three times of a thickness of each blade.4. The impeller according to claim 1 ,wherein a connection angle, which is formed between a pressure surface of each blade and a surface of the outer ring at a connection part of the tip end portion of the blade and the outer ring, ranges from 30° to 90°.5. The impeller according to claim 1 ,wherein the outer ring is formed with a plurality of thickness-reduced relief parts which are arranged along the circumferential direction about the center part of the main plate.6. The impeller according to claim 1 ,wherein an outer diameter size of the main plate is smaller than an inner diameter size of the outer ...

Slurry Pump Impeller

A pump impeller which includes: a back shroud having an inner main face with an outer peripheral edge and a central axis, the impeller in use being rotatable about the central axis in a direction of rotation, a plurality of pumping vanes extending from the inner main face of the back shroud, the pumping vanes being disposed in spaced apart relation, and each pumping vane including: opposed first and second side faces, a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edge of the back shroud, and with a passageway between adjacent pumping vanes, wherein the first side face at the leading edge is in a plane which is at an acute angle with respect to a plane of the inner main face of the back shroud, and the first side face at the trailing edge is in a plane which is at an obtuse angle with respect to the plane of the inner main face of the back shroud.

Heating Pump

A heating pump includes a pump housing with an inlet, an outlet, a heater, an impeller, and a motor for driving the impeller. The impeller is received in the pump housing. The heater includes connecting heads and a main body for generating heat. The main body is bent into an arc. The pump housing includes a cylindrical sidewall extending in an axial direction of the motor and a top plate sealed to an axial opening of the sidewall. The top plate is made of metal. The heater extends through and is fixed to the top plate. The connecting heads extend to an exterior of the pump housing. The main body is located in an interior of the pump housing and in contact with the top plate. 1. A heating pump comprising:a pump housing having an inlet, an outlet, a cylindrical sidewall, and a top plate sealingly fixed to an axial opening of the sidewall, the top plate is made of metal;a heater fixed to the pump housing, the heater comprises connecting heads and a main body connected between the connecting heads;an impeller received in the pump housing; anda motor fixed to the pump housing for rotating the impeller,wherein the heater extends through and is fixed to the top plate, the connecting heads extend to an exterior of the pump housing, and the main body of the heater is formed as an arc, is located in an interior of the pump housing and is in contact with the top plate.2. The pump of claim 1 , wherein a cross section of the main body is in the shape of a chamfered rectangle and has four outer surfaces claim 1 , and one of the outer surfaces is in intimate contact with the top plate.3. The pump of claim 2 , wherein the main body is soldered to the top plate.4. The pump of claim 1 , wherein the top plate defines a first hole claim 1 , the inlet comprises a fixing tube and a connecting tube claim 1 , and a first interlock structure is formed between a peripheral area of the first hole of the top plate and one end of the connecting tube to fix the connecting tube to the top plate.5 ...

OVERFLOW VORTEX TRANSFER SYSTEM

The present invention is directed to a molten metal pump comprising an elongated pumping chamber tube with a base end and an open top end. A shaft extends into the tube and rotates an impeller therein, the impeller rotates proximate the base end. The tube has a diameter at least 1.1 times the diameter of the impeller. The pumping chamber tube preferably has a length at least three times the height of the impeller. The base end includes an inlet and the top end includes a tangential outlet. Rotation of the impeller draws molten metal into the pumping chamber and creates a rotating equilibrium vortex that rises up the walls of the pumping chamber. The rotating vortex adjacent the top end exists the device cia the tangential outlet. 1. A molten metal pump comprising an elongated tube having a base end and a top end , a shaft disposed within said tube and an impeller rotatable by said shaft , said impeller disposed proximate said base end , said tube having a diameter at least 1.1 times a diameter of the impeller , said base end including an inlet and said top end including an outlet.2. The molten metal pump of wherein said tube has a diameter of at least 1.5 times the diameter of the impeller.3. The molten metal pump of wherein a distance between said inlet and said outlet is at least three times a height of said impeller.4. The molten metal pump of wherein said distance is at least ten times the height of the impeller.5. The molten metal pump of wherein said tube is comprised of a refractory ceramic.6. The molten metal pump of wherein said tube is comprised of metal.7. The molten metal pump of wherein said top end comprises a chamber having a diameter greater than the diameter of said tube intermediate said inlet and said chamber.8. The molten metal pump of wherein said chamber includes a volute shape.9. The molten metal pump of wherein said outlet is tangential to a sidewall forming said chamber.10. The molten metal pump of wherein a metal frame surrounds at least a ...

PUMP ASSEMBLY FOR RECIRCULATING A COOLING FLUID OF A HEAT ENGINE

Pump assembly for recirculating a cooling fluid of a heat engine, comprising: 1. Pump assembly for recirculating a cooling fluid of a heat engine , comprising:a pump body, an impeller driven by a driven shaft, adapted to be associated to a cooling circuit of the heat engine;a pulley adapted to be rotationally driven by the heat engine,at least a reversible friction clutch, adapted to connect/disconnect said pulley to/from said driven shaft,an electric motor associated to said driven shaft to rotationally drive the impeller when said reversible clutch is disconnected;characterized in thatsaid pump body defines a longitudinal development having a radial narrowing portion where said pulley is defined and wherein said electric motor and said reversible friction clutch are arranged in an axially mutually opposite position with respect to said axial narrowing portion, namely mutually spaced by means of said axial narrowing portion.2. Pump assembly according to claim 1 , characterized in that said pump assembly defines a first radial expansion claim 1 , intended to be associated to said heat engine claim 1 , wherein a chamber is defined claim 1 , and wherein said electric motor is housed in said first radial expansion and is axially adjacent to the chamber of the impeller.3. Pump assembly according to claim 1 , characterized in that the rotor of the electric motor is coupled to the shaft of the impeller by means of a rotor bell claim 1 , rotationally integral with the shaft claim 1 , and in that a sensor for detecting the rpm of the impeller is arranged in correspondence of said rotor bell.4. Pump assembly according to claim 1 , characterized in that said electric motor is a radial flow motor claim 1 , whose stator is arranged in a radially external position with respect to the rotor.5. Pump assembly according to claim 1 , characterized in that it comprises a cooling circuit of the electric motor coupled to the circuit for recirculating the cooling fluid of the heat engine ...

ELECTRICALLY DRIVEN PUMP AND METHOD FOR MANUFACTURING THE SAME

An electrically driven pump is provided, which includes a rotor assembly. The rotor assembly includes an impeller, a rotor and a shaft sleeve assembly. The impeller is arranged on one end of a shaft sleeve, and the rotor is arranged on another end of the shaft sleeve away from the end on which the impeller is mounted. The rotor includes a rotor core, a permanent magnet and a shield. The permanent magnet is arranged around an outer peripheral surface of the rotor core and fits the outer peripheral surface of the rotor core. The shield is fixed to the shaft sleeve, and an accommodating portion configured to accommodate the rotor core and the permanent magnet is formed between the shield and the shaft sleeve. The electrically driven pump has a simple structure and is easy to manufacture. 1. An electrically driven pump , comprising a first housing , a second housing , a partition , a stator assembly , a circuit board and a rotor assembly , wherein the electrically driven pump comprises a pump chamber , the pump chamber comprises a space defined by the first housing and the second housing , the pump chamber is divided , by the partition , into a dry chamber and a wet chamber , the rotor assembly is arranged in the wet chamber , and the stator assembly and the circuit board are arranged in the dry chamber , wherein:the rotor assembly comprises an impeller, a rotor and a shaft sleeve assembly, the shaft sleeve assembly comprises a shaft sleeve, the impeller is arranged on one end of the shaft sleeve, and the rotor is arranged on another end of the shaft sleeve; andthe rotor comprises a permanent magnet, a rotor core and a shield, the permanent magnet is fixed to the rotor core, the rotor core is fixed to the shaft sleeve, an accommodating portion is formed between the shield and the shaft sleeve, and the permanent magnet is fixedly arranged in the accommodating portion.2. The electrically driven pump according to claim 1 , wherein the shield comprises a sleeve and at least ...

INTEGRAL PUMP PRESSURE RELIEF VALVE

A fuel pump includes a cartridge removably received within a canister. The cartridge includes a motor assembly, and a pump assembly that includes a centrifugal pumping element and outlet porting from the centrifugal pumping element. The motor drives the centrifugal pumping element to generate a flow of fluid through a main flow pathway between a pump inlet and outlet through the outlet porting of the pump assembly. The cartridge further includes a pressure relief valve that is movable between a closed position and an open position, and defines a pressure relief flow pathway integrally within the cartridge from the outlet porting to inlet porting of the centrifugal pumping element. When pressure within the pump assembly exceeds a threshold pressure, the pressure relief valve moves from the closed position to the open position to permit a relief flow of fluid through the relief flow pathway. The fuel pump may be employed as part of an aircraft fuel system. 1. A cartridge/canister fuel pump comprising:a cartridge and a canister, the canister being configured to removably receive the cartridge, and the canister includes an inlet and an outlet for a flow of a fluid through the cartridge/canister fuel pump;the cartridge comprising a motor assembly and a pump assembly, the pump assembly including a centrifugal pumping element and outlet porting from the centrifugal pumping element, wherein the motor drives the centrifugal pumping element to generate a flow of fluid through a main flow pathway between the inlet and the outlet through the outlet porting of the pump assembly; andthe cartridge further comprising a pressure relief valve that is movable between a closed position and an open position, the pressure relief valve defining a pressure relief flow pathway integrally within the cartridge from the outlet porting to inlet porting of the centrifugal pumping element;wherein when pressure within the pump assembly exceeds a threshold pressure, the pressure relief valve moves ...

Spiral Pump, Device for Treatment of Water and Associated Method

The invention relates to a spiral pump and a device for treating water comprising this spiral pump, and associated method. The spiral pump comprises: 1. Spiral pump , comprising:a housing provided with an inlet for water; anda pump body which is accommodated in the housing and rotatable around an axis, wherein the pump body comprises at least one spiral channel,wherein a first outer end of the at least one spiral channel is located on an outer side of the pump body and forms an entrance opening for alternately taking in water and air through rotation of the pump body in the housing, and a second outer end of the at least one spiral channel debouches into an outlet close to the axis, wherein the housing is embodied as pressure chamber, wherein the at least one channel comprises an increasing diameter from the entrance opening in the direction of the axis.2. Spiral pump as claimed in claim 1 , further comprising means for controlling a gas pressure in the housing claim 1 , the means comprising a gas feed.3. Spiral pump as claimed in claim 2 , wherein the gas feed preferably comprises a pump.4. Spiral pump as claimed in claim 2 , wherein the means for controlling the gas pressure in the housing are configured to set the water level in the housing to a level at the height of the axis of the pump body.5. Spiral pump as claimed in claim 4 , the housing comprising an entry chamber which comprises the inlet and an exit chamber which is separated from the entry chamber and into which the outlet of the pump body debouches claim 4 , wherein the gas feed is connected to the exit chamber for the purpose of pumping gas into the exit chamber claim 4 , the housing further comprising a first conduit claim 4 , of which a first outer end is positioned in the exit chamber at the height of the axis of the pump body and a second outer end is positioned in the entry chamber claim 4 , and a second conduit claim 4 , of which a first outer end is positioned in the entry chamber at the height ...

ANTI-ICING IMPELLER SPINNER

An impeller spinner for a fuel pump can include a head and a shank. The head can have a base at one end and a tip at an opposite end. The shank can have a body portion nearest the head with a first diameter and a fastener portion adjacent to the body portion at an end opposite the head with a second diameter. 1. An impeller spinner for a fuel pump , the impeller spinner comprising:a head having a base at one end and a tip at an opposite end; anda shank having a body portion nearest the head with a first diameter and a fastener portion adjacent to the body portion at an end opposite the head with a second diameter.2. The impeller spinner of claim 1 , wherein the head has a conical shape.3. The impeller spinner of claim 2 , wherein the tip of the head is substantially pointed.4. The impeller spinner of claim 1 , wherein the tip of the head is rounded.5. The impeller spinner of claim 1 , wherein a hole extends through the head such that the hole traverses a cross-section of the head at a location between the base and the tip and is configured to accept a pin.6. The impeller spinner of claim 5 , wherein a distance between the base and hole is less than a distance between the hole and the tip.7. The impeller spinner of claim 1 , wherein the head is axisymmetric and has a substantially smooth surface.8. The impeller spinner of claim 1 , wherein the fastener portion of the shank is threaded and wherein the first diameter is greater than the second diameter and less than a diameter of the base of the head.9. An anti-icing apparatus for a fuel pump comprises: a head having a base at one end and a tip at an opposite end; and', 'a shank having a body portion nearest the base of the head with a first diameter and a fastener portion adjacent to the body portion at an end opposite the head with a second diameter, wherein the first diameter is greater than the second diameter and less than a diameter of the base of the head., 'an impeller spinner comprising10. The anti-icing ...

Turbofan and air-conditioning apparatus

Provided is a turbofan producing reduced noise and easily manufactured. A coupling portion between a blade main portion and a blade cover is formed in a surface region (pressure surface) parallel to a direction of air flowing over the pressure surface of each blade. With this configuration, the air sucked from a direction of a rotation axis of a turbofan is less liable to enter a gap of the coupling portion of the blade, thereby being capable of reducing noise. Further, noise is reduced so that high-precision dimensional control of the gap of the coupling portion of the blade is not required. Consequently, dimensional control at the time of manufacture is facilitated to thereby facilitate manufacture.

Inducer for Centrifugal Pump

An inducer for vertical flow, cryogenic liquid centrifugal pumps comprising a stationary outer housing portion having an inlet and an outlet, the inlet located at a lower end and the outlet located at an upper end, the housing further having an inner wall portion with one or more spiral vanes projecting outwardly from the inner wall portion, the one or more spiral vanes defining one or more gap regions on the inner wall portion that spiral in a first direction, and an inner rotating impeller mounted on a rotating center shaft, the impeller having at least one curved blade which defines a curved, helicoid plane surface in which the slope of the plane increases as the distance from the center axis increases, the impeller rotating in a second direction which is in counter rotation to the first direction.

Homopolar, Flux-Biased Hysteresis Bearingless Motor

Described is a bearingless motor based upon a homopolar flux-biased magnetic bearing for force generation and a hysteresis motor for torque generation. The bearingless slice motor levitates and rotates a ring-shaped rotor made of a semi-hard magnetic material. The rotor is biased with a homopolar permanent-magnetic flux, on which 2-pole flux can be superimposed to generate suspension forces. Torque is generated by a hysteretic coupling between the rotor and a rotating multi-pole stator field. 1. A homopolar flux-biased hysteresis bearingless motor comprising:(a) a stator comprising a bottom plate and a plurality of teeth projecting from said bottom plate;(b) a flux-biasing structure disposed in a central portion of said stator and having a shape selected such that said stator and said flux-biasing structure define a space having a predetermined shape;(c) a hysteresis rotor disposed in the space defined by said flux-biasing structure and stator;(d) stator windings coupled to said stator teeth and through which electric current may flow to induce two sets of magnetic flux on said hysteresis rotor said two sets of flux corresponding to (1) a motor flux; and (2) a suspension flux; and(e) means for providing a homopolar bias flux which traverses through said hysteresis rotor radially and returns via the stator teeth and the bottom plate of said stator and wherein said stator windings are configured to superpose a motor flux and a suspension flux on the homopolar bias flux to generate a torque and a radial force.2. The homopolar flux-biased hysteresis bearingless motor of wherein:(a1) said stator teeth are provided having an L-shape; and(a2) said flux-biasing structure is provided as an inner central flux-biasing structure which forms with said stator teeth an annular space having dimensions selected to accept said hysteresis rotor.3. The homopolar flux-biased hysteresis bearingless motor of wherein:said stator teeth and said bottom plate are provided from a soft magnetic ...

CENTRIFUGAL PUMP

A centrifugal pump () including: a pump housing () enclosing a pump chamber (), the pump chamber () including a suction inlet () and a pressure outlet (); an impeller () rotatably arranged within the pump chamber () for being driven to rotate about a rotor axis (R), the suction inlet () being located coaxial with the rotor axis (R); and at least one stationary scraper (). The impeller () includes an impeller base () and at least one or more impeller vanes () extending from the impeller base () towards the suction inlet (). Each of the impeller vanes () includes a radially innermost vane path () describing during impeller rotation a central volume () that is wider towards the suction inlet () than towards the impeller base () and configured to receive the at least one scraper () projecting from the suction inlet () into the central volume (). 1. A centrifugal pump comprising:a pump housing enclosing a pump chamber, wherein the pump chamber comprises a suction inlet and a pressure outlet;an impeller rotatably arranged within the pump chamber for being driven to rotate about a rotor axis, wherein the suction inlet is located coaxial with the rotor axis; andat least one stationary scraper, wherein the impeller comprises an impeller base and one or more vanes extending from the impeller base towards the suction inlet, wherein each of the impeller vanes comprises a radially innermost vane path describing during impeller rotation a central volume that is wider towards the suction inlet than towards the impeller base and that is configured to receive the at least one stationary scraper projecting from the suction inlet into the central volume.2. The centrifugal pump according to claim 1 , wherein the at least one stationary scraper comprises a radially outward scraper surface acting as a first scraping path and positioned to form a scrape gap to the radially innermost vane path acting as a second scraping path during impeller rotation.3. The centrifugal pump according to ...

PUMP COMPRISING AN IMPELLER BODY PROVIDED AS AN OBLIQUE CONE

A pump comprising an impeller having a hub base and an impeller body. The impeller body comprises a base which is concentric relative to a rotational axis of the impeller, and at least one eccentric apex. 1. A pump comprising an impeller having a hub and an impeller body , wherein the impeller body comprises:a base which is concentric relative to a rotational axis of the impeller; andat least one oblique cone having an eccentric apex, the at least one oblique cone extending from the hub base.2. The pump of further comprising a tubular sleeve having an upstream open end and a downstream open end defining an annular outflow opening with the hub claim 1 ,wherein the impeller body extends into the sleeve with the eccentric apex directly adjacent to an inner surface of the sleeve.3. The pump of claim 2 , wherein the eccentric apex is connected to the inner surface of the sleeve.4. The pump of claim 2 , wherein the sleeve has a flaring shape with a larger diameter at the outflow opening and a smaller diameter at an inflow opening.5. The pump of claim 4 , wherein the flaring shape is trumpet shaped.6. The pump of claim 1 , wherein the impeller body has at least one vane extending between the eccentric apex and the base.7. The pump of claim 2 , wherein the impeller body comprises at least one trailing edge.8. The pump of claim 7 , wherein the at least one trailing edge is positioned in the annular opening between the sleeve and the hub base.9. The pump of claim 8 , wherein the impeller body has at least one vane spiraling from the eccentric apex to the trailing edge.10. The pump of claim 8 , wherein the eccentric apex and the trailing edge are arranged on a first plane claim 8 , the eccentric apex and the center point of the hub are arranged on a second plane claim 8 , and an angle between the first and second plane is an acute angle.11. (canceled)12. The pump of claim 1 , wherein at least one of the at least one oblique cones includes an inwardly curved carve-out on a back ...

Permanent Magnet Pump

A combined well pump and motor includes a housing having an axis, an upstream end and a downstream end. Diffusers are mounted for non-rotation in the housing, each of the diffusers having diffuser passages. An impeller is mounted between each of the diffusers for rotation relative to the impellers. Each of the impellers has impeller vanes defining impeller passages. The impeller has an exterior outer wall extending circumferentially around the impeller vanes, closing outer sides of each of the impeller passages. An array of magnets is mounted to each of the impellers. The magnets are spaced circumferentially apart from each other around the axis at a different radial distance from the axis than the impeller vanes. A stator is mounted in the housing. The stator has windings for interacting with the magnets to impart rotation to the impellers. 1. A combined pump and motor apparatus , comprising:a housing having an axis, an upstream end and a downstream end;a plurality of diffusers mounted for non-rotation in the housing, each of the diffusers having diffuser passages;an impeller rotatably mounted between each of the diffusers, each of the impellers having impeller vanes defining impeller passages between adjacent ones of the impeller vanes, the impeller having an exterior outer wall extending circumferentially around the impeller vanes, closing outer sides of each of the impeller passages;a plurality of magnets mounted to each of the impellers, the magnets being spaced circumferentially apart from each other around the axis at a different radial distance from the axis than the impeller vanes; anda stator non rotatably mounted in the housing, the stator having a plurality of windings for interacting with the magnets to impart rotation to the impellers.2. The apparatus according to claim 1 , wherein:each of the impellers has an upstream end with a cylindrical skirt and a downstream end with a cylindrical balance ring;each of the diffusers has a downstream end with a ...

GAS DISPERSION SYSTEM

A gas dispersion system may include a drive mechanism, a drive shaft having a proximal end operably coupled to the drive mechanism, extending to a distal end, and configured to transfer rotational motion and torque, a mixing element arranged at or near the distal end of the drive shaft including a hub and multiple blade pairs, each blade pair including an upper blade and a lower blade secured to the hub and cantilevering freely and generally radially away from the hub. 1. A gas dispersion system , comprising:a drive mechanism;a drive shaft having a proximal end operably coupled to the drive mechanism, extending to a distal end, and configured to transfer rotational motion and torque; a hub; and', 'a plurality of blade pairs, each blade pair including an upper blade and a lower blade secured to the huh and cantilevering freely and generally radially away from the hub, the upper blade and the lower blade each being tapered so as to have a first width at an outer edge and a second narrower width at an inner edge., 'a mixing element arranged at or near the distal end of the drive shaft, comprising2. The gas dispersion system of claim I , wherein the upper blade and the lower blade of the plurality of blade pairs extend along substantially parallel radial lines.3. The gas dispersion system of claim 2 , wherein the upper blade and the lower blade of each of the plurality of blade pairs are arranged at substantially the same circumferential position on the hub.4. The gas dispersion system of claim 3 , wherein each blade of the plurality of blade pairs have a leading edge and a trailing edge and the distance between the leading edges of the blades of a pair of blades is greater than the distance between the trailing edges of the blades of a pair of blades.5. The gas dispersion system of claim 4 , wherein the blades of the plurality of blade pairs have a stiffness sufficient to avoid deflective contact during dispersing operations.6. The gas dispersion system of claim 5 , ...

SELF-CLEANING PUMP

A pump comprising a volute housing, a rotatable shaft, and an impeller. The volute housing comprises a volute cavity side wall, an upper cylindrical wall, and an upper wall. The upper cylindrical wall extends upwardly from an upper perimeter edge and includes an upper recessed notch formed therein. The upper wall extends radially inwardly from the upper cylindrical wall. The rotatable impeller is operatively coupled to the rotatable shaft and comprises a top cylindrical wall and a top flange. The top cylindrical wall extends upwardly from a top perimeter edge of the top flange and includes a top recessed notch formed therein. The top cylindrical wall is separated from the upper cylindrical wall of the volute housing by an upper annular gap. The top recessed notch of the rotatable impeller and the upper recessed notch of the volute housing may be slot-shaped or wedge-shaped. 1. A pump comprising: a volute cavity side wall defining a volute cavity and including an upper region terminating at an upper perimeter edge and a lower region terminating at a lower perimeter edge;', 'an upper cylindrical wall extending upwardly from the upper perimeter edge and including an upper recessed notch formed therein;', 'a lower cylindrical wall extending downwardly from the lower perimeter edge and including a lower recessed notch formed therein;', 'an upper wall extending radially inwardly from the upper cylindrical wall;, 'a) a volute housing comprisingb) a rotatable shaft extending to the upper wall of the volute housing and terminating at a distal end; a side wall, a top flange, and a bottom flange;', 'a top cylindrical wall extending upwardly from a top perimeter edge of the top flange and including a top recessed notch formed therein, the top cylindrical wall separated from the upper cylindrical wall of the volute housing by an upper annular gap;', 'a bottom cylindrical wall extending downwardly from a bottom perimeter edge of the bottom flange and including a bottom recessed ...

MOTOR-DRIVEN WATER LIFTING DEVICE

A motor-driven water lifting device of which the water lifting device includes housing having water-lifting wheel mounted in accommodation chamber therein, water supply pipe disposed at the periphery of the housing and having water inlet for guiding water into accommodation chamber and water outlet for guiding water out of accommodation chamber, and air inlet hole located on water supply pipe for allowing an external gas to be filled into accommodation chamber of housing so that when water is guided through the water inlet into accommodation chamber, the intake water is agitated by the water-lifting wheel and mixed with the external gas in the accommodation chamber to form a bubble water. The water molecules of the bubble water are finely mixed by mixing with the gas, and the fine bubble water is suitable for cleaning various objects to achieve an optimized cleaning effect. 1. A motor-driven water lifting device , comprising a motor and a water lifting device connected to said motor , said water lifting device comprising:a housing comprising an accommodation chamber and a water-lifting wheel mounted in said accommodation chamber;a water supply pipe disposed at the periphery of said housing at one side, said water supply pipe comprising a water inlet defined in one end thereof for guiding water into said accommodation chamber and a water outlet defined in an opposite end thereof for guiding water out of said accommodation chamber; andan air inlet hole located on said water supply pipe for allowing an external gas to be filled into said accommodation chamber of said housing so that when water is guided through said water inlet into said accommodation chamber, the intake water is agitated by said water-lifting wheel and mixed with said external gas in said accommodation chamber to form a bubble water.2. The motor-driven water lifting device as claimed in claim 1 , wherein said housing is composed of two shells claim 1 , each said shell comprising two arched bearing ...

Rotary Blood Pump

The present invention provides a rotary blood pump with both an attractive magnetic axial bearing and a hydrodynamic bearing. In one embodiment according to the present invention, a rotary pump includes an impeller assembly supported within a pump housing assembly by a magnetic axial bearing and a hydrodynamic bearing. The magnetic axial bearing includes at least two magnets oriented to attract each other. One magnet is positioned in the spindle of the pump housing while the other is disposed within the rotor assembly, proximate to the spindle. In this respect, the two magnets create an attractive axial force that at least partially maintains the relative axial position of the rotor assembly. The hydrodynamic bearing is formed between sloping surfaces that form tight clearances below the rotor assembly. 120-. (canceled)21. A method of pumping blood comprising:providing a pump housing defining a pump chamber having an inlet and an outlet and a rotor rotatably disposed in said pump chamber;spinning said rotorgenerating a hydrodynamic bearing between said pump housing and said rotor using a plurality of a plurality of lifts positioned between said pump housing and said rotor;each of said plurality of lifts being elongated and sloped at an angle relative to a pump chamber surface such that each of said plurality of lifts includes a first planar surface extending at an angle relative to a pump chamber surface and a second planar surface, connected to said first surface, extending substantially parallel to said pump chamber surface; and,supporting said rotor with a passive axial magnetic bearing comprised of a pump housing magnet and a corresponding rotor magnet wherein magnetic fields of said pump housing magnet and said corresponding rotor magnet are oppositely aligned in the axial direction;said hydrodynamic bearing and said passive axial magnetic bearing cooperating with each other so as to enhance axial stability to said rotor during rotation of said rotor.22. The ...

ELECTRIC WATER PUMP WITH COOLANT PASSAGE

An electric water pump includes an electric motor having a stator which generates an electromagnetic field by control signals supplied from a pump driver. A rotor rotates by the electromagnetic field generated by the stator. An impeller is connected to and rotates with the rotor to circulate a coolant. An inside space of the electric water pump may include a motor room in which the electric motor is disposed, a volute room in which the impeller is positioned, and a pump driver room in which the pump driver is positioned. 1. An electric water pump comprising:an electric motor having a stator which generates an electromagnetic field by control signals supplied from a pump driver, and a rotor which rotates by the electromagnetic field generated by the stator; andan impeller connected to and rotating with the rotor to circulate a coolant, a motor room in which the electric motor is disposed;', 'a volute room in which the impeller is disposed; and', 'a pump driver room in which the pump driver is disposed., 'wherein an inside space of the electric water pump includes2. The electric water pump of claim 1 , further comprising:a bulkhead separating the motor room and the pump driver room to seal the motor room and the pump driver room with respect to each other;a separation wall separately forming a rotor room inside the motor room to isolate the rotor from the motor room; anda cap mounted to a front surface of the bulkhead to support one end of the separation wall,wherein a front side of the rotor room fluidly communicates with the volute room to flow the coolant into the rotor room.3. The electric water pump of claim 2 , further comprising:an insulation pad for insulating the pump driver from the bulkhead.4. The electric water pump of claim 2 , further comprising:a first cooling passage formed in one side of a water pump housing or a motor room cover for sealing the motor room from outside;a second cooling passage of which one end is connected to the first cooling passage ...

Electric Coolant Pump

An electric coolant pump includes a housing, a motor received in the housing, an impeller for driving coolant, and a control unit for controlling the motor. The control unit and the impeller are arranged at opposite ends of the motor. The motor includes a sleeve, a stator mounted around the sleeve, and a rotor rotatably received in the sleeve. The impeller is fixed to the rotor. A radial gap is formed between the sleeve and the rotor. The sleeve includes a plurality of ribs extending from an internal surface of the sleeve into the gap. At least a portion of the ribs of the sleeve guide the coolant towards the control unit to absorb heat generated by the control unit. 1. An electric coolant pump , comprising:a housing;a motor received in the housing, the motor comprising a sleeve, a stator mounted around the sleeve, and a rotor rotatably received in the sleeve, a radial gap being formed between the sleeve and the rotor, wherein the sleeve comprises a plurality of ribs extending from an internal surface of the sleeve towards the rotor;an impeller for driving coolant, the impeller being connected to the rotor and rotating with the rotor; anda control unit for controlling the motor, the control unit and the impeller being respectively arranged at opposite ends of the motor, at least a portion of the ribs of the sleeve guiding the coolant to flow towards the control unit to absorb heat generated by the control unit.2. The pump of claim 1 , wherein the ribs are aslant to an axis of the sleeve claim 1 , and a tilt angle of each of the ribs is from 0° to 90°.3. The pump of claim 2 , wherein the tilt angle of each rib is from 42° to 67.5°.4. The pump of claim 1 , wherein the ribs are straight as developed along a circumferential direction of the sleeve.5. The pump of claim 1 , wherein the ribs are helical.6. The pump of claim 1 , wherein the ribs are divided into a plurality of groups which are arranged in a circumferential direction of the sleeve and spaced from each other ...

ESP PUMP FLOW RATE ESTIMATION AND CONTROL

An electric submersible pump system can include a multiphase electric motor operatively coupled to a fluid pump; a multiphase power cable operatively coupled to the multiphase electric motor; and a controller that includes an input that receives measurements as to power supplied to the multiphase electric motor via the multiphase power cable and that processes the measurements to determine information germane to the operation of the electric submersible pump system. 1. An electric submersible pump system comprising:a multiphase electric motor operatively coupled to a fluid pump;a multiphase power cable operatively coupled to the multiphase electric motor; anda controller that comprises an input that receives measurements as to power supplied to the multiphase electric motor via the multiphase power cable and that processes the measurements to estimate a pump rate of the fluid pump.2. The electric submersible pump system of wherein the controller comprises an output that outputs information to control power supplied to the multiphase power cable.3. The electric submersible pump system of wherein the information is based at least in part on processing of at least one of the measurements.4. The electric submersible pump of wherein the controller comprises a closed loop controller.5. The electric submersible pump of wherein the electric motor comprises an IM motor.6. The electric submersible pump of wherein the electric motor comprises a PMS motor.7. The electric submersible pump of wherein the controller comprises a state space-based model.8. The electric submersible pump of wherein the state space-based model comprises rotor and stator resistance parameters that are dynamically adapted based at least in part on operational conditions of the electric submersible pump.9. The electric submersible pump of wherein the state space-based model comprises a system variable vector and an excitation vector.10. The electric submersible pump of wherein the state space-based model ...

PUMP SYSTEM FOR HIGH PRESSURE APPLICATION

A pump system for high pressure, high volume applications is presented. The pump system includes a turbo-shaft engine having a drive shaft and a high pressure, high RPM centrifugal pump coupled to the drive shaft. In certain embodiments the pump system further includes a second low pressure, high RPM centrifugal pump coupled to the drive shaft. 1. A pump system , comprising:an engine including a drive shaft; andat least one pump connected to the drive shaft, the at least one pump including a primary impeller and a sacrificial impeller, the sacrificial impeller being configured, dimensioned, and positioned for increased wear relative to the primary impeller to increase usable life of the primary impeller.2. The pump system of claim 1 , further comprising:a primary housing, the primary impeller being positioned within the primary housing.3. The pump system of claim 1 , wherein the at least one pump further includes a cap covering the sacrificial impeller claim 1 , the cap being removable to facilitate repair and/or replacement of the sacrificial impeller.4. The pump system of claim 1 , wherein the at least one pump is positioned distally of the engine claim 1 , the sacrificial impeller being positioned distally of the primary impeller.5. The pump system of claim 1 , wherein the at least one pump is in direct mechanical cooperation with the engine such that there are no intervening mechanical systems between the at least one pump and the engine.6. The pump system of claim 5 , wherein the at least one pump further includes a rotor shaft claim 5 , the rotor shaft being mechanically coupled to the drive shaft of the engine such that rotational movement of the drive shaft is directly communicated to the rotor shaft.7. The pump system of claim 6 , wherein the pump system is configured and dimensioned for operation at an efficiency of about 94%.8. The pump system of claim 1 , wherein the at least one pump includes a first pump and a second pump claim 1 , the first pump being ...

TORQUE TRANSMITTING KEY FOR ELECTRIC SUBMERSIBLE PUMPS

A torque transmitting key for electrical submersible pumps (ESP). An ESP system includes a rotatable shaft and a sleeve coupled to the rotatable shaft by an elongate key, the elongate key made of a carbide composite material, the carbide composite material including a carbide selected from the group consisting of tungsten carbide, titanium carbide and silicon carbide, and a composite material selected from the group consisting of cobalt, nickel and a combination of cobalt and nickel. An ESP system includes an elongate torque transmitting key, the elongate key coupling an ESP rotatable component to an ESP shaft such that the ESP rotatable component rotates with the ESP shaft, the elongate torque transmitting key seated in a keyway of the ESP rotatable component and a keyway of the ESP shaft, and the elongate torque transmitting key having a load optimizing cross-sectional shape. 1. An electric submersible pump (ESP) system comprising:a rotatable shaft extending longitudinally through at least one impeller and diffuser stage and at least one bearing set, each of the at least one bearing set comprising a sleeve and a bushing;the sleeve coupled to the rotatable shaft by an elongate key such that the sleeve rotates with the rotatable shaft; and a carbide selected from the group consisting of tungsten carbide, titanium carbide and silicon carbide; and', 'a composite material selected from the group consisting of cobalt, nickel and a combination of cobalt and nickel., 'the elongate key made of a carbide composite material, the carbide composite material comprising2. The ESP system of claim 1 , wherein the composite material comprises between 6% and 10% by mass of one of cobalt claim 1 , nickel or a combination thereof.3. The ESP system of claim 1 , wherein the elongate key has one of an arch or tee cross-sectional shape.4. The ESP system of claim 3 , wherein the elongate key has an arch cross-sectional shape and a rounded portion of the arch is seated in a keyway extending ...

CENTRIFUGAL BLOOD PUMP IMPELLER AND FLOW PATH

An impeller and rotor structure for a magnetically levitated pump define a smooth primary flow path and U-shaped secondary flow path, which extends around an annular magnetic rotor. The u-shaped secondary flow path is defined by a large outer side gap along an outer surface of the rotor, a large bottom gap along a bottom surface of the rotor and a large inner gap along an inner surface of the rotor. Shroudless impeller blades are purely radial and overhung from a thin peripheral ring attached to the annular magnetic rotor. A center post having a low aspect ratio extends through the annular rotor. The low aspect ratio is configured to prevent flow in the primary flow path from colliding directly with flow in the secondary flow path at the inner radial gap. 1. A magnetic levitation pump apparatus , comprising:a housing portion including a center post and an annular cavity concentric with the center post;an annular magnetic rotor located in the annular cavity; anda secondary flow path in the annular cavity, the secondary flow path having a U-shaped cross-section and extending around the annular magnetic rotor.2. The apparatus of claim 1 , wherein the secondary flow path is defined by a first gap between the annular magnetic rotor and an outer surface of the annular cavity claim 1 , a second gap between the annular magnetic rotor and a bottom surface of the annular cavity claim 1 , and a third gap between the annular magnetic rotor and an inner surface of the annular cavity.3. The apparatus of claim 2 , wherein the first gap claim 2 , the second gap and the third gap are between about 0.010 inches and about 0.020 inches.4. The apparatus of claim 2 , wherein the first gap claim 2 , the second gap and the third gap are between about 0.005 inches and about 0.030 inches.5. The apparatus of claim 2 , wherein a height of the annular magnetic rotor is greater than a thickness of the annular magnetic rotor.6. The apparatus of claim 2 , wherein a height of the annular magnetic ...

SYSTEMS AND METHODS FOR GENERATING CLEAN ENERGY THROUGH HYDRODYNAMIC CLOSED CYCLE

Systems for pumping water are described. The system can include a covered pool containing a first volume of water, an oared water pump with a plurality of radial oars, a reservoir and a hydro turbine system. The system can include a first portion of the plurality of radial oars that can be substantially disposed with the first volume of water contained by the covered pool and can also include a second portion of the plurality of radial oars that can be substantially disposed outside of the first volume of water contained in the covered pool. The oared pump can be configured to pump a portion of the first volume of water out of the covered pool. The reservoir can be configured in fluid communication with the covered pool, and can receive a portion of the first volume of water that can be pumped out of the covered pool by the oared pump. The reservoir can also be configured to allow a second volume of water to flow from the reservoir into the covered pool. The hydro turbine system can be configured to generate electric power based on the second volume of water flowing into the covered pool from the reservoir. 1. An oared water pump comprising:a pump cover configured to form a covered pool with a first volume of water;a cylindrical body disposed substantially within the pump cover; anda plurality of radial oars fixedly coupled to the cylindrical body, wherein a first portion of the plurality of radial oars is configured to be disposed in the first volume of water and a second portion of the plurality of radial oars is configured to be disposed outside of the first volume of water.2. The system of claim 1 , wherein the plurality of oars comprises between 5 and 30 radial oars and wherein the first portion of the plurality of radial oars that is configured to be disposed in the first volume of water comprises between 2 and 20 radial oars.3. The system of claim 1 , wherein the plurality of oars comprises between 12 and 24 radial oars and wherein the first portion of the ...

IMPELLER FOR CENTRIFUGAL PUMPS

An impeller for centrifugal pumps has a first disk element, functionally arranged toward the inlet, which is coaxial to and faces a second disk element, which is functionally arranged toward the delivery and is connected rigidly to the first disk element by virtue of a series of angularly spaced vanes and is provided centrally with a means for fixing to a transmission shaft. The particularity of the present invention resides in that the impeller includes a series of openings formed in the substantially peripheral region of the second disk element, between pairs of adjacent vanes, substantially at the areas subjected to the greatest axial thrust. 1. An impeller for centrifugal pumps comprising a first disk element , functionally arranged toward the inlet , which is coaxial to and faces a second disk element , which is functionally arranged toward the delivery; said second disk element being connected rigidly to said first disk element by angularly spaced vanes and being centrally provided with a fastening means for fastening to a transmission shaft; said impeller being characterized in that it comprises openings formed in the substantially peripheral region of said second disk element , between pairs of adjacent vanes , substantially at the areas subjected to the greatest axial thrust.2. The impeller according to claim 1 , characterized in that the radially peripheral side of each of said openings extends at a distance that is shorter than that of the peripheral edge of said second disk element claim 1 , with respect to the rotation axis of said impeller.3. The impeller according to claim 1 , characterized in that said openings are constituted by contoured slots that are formed in the substantially peripheral region of said second disk element claim 1 , between pairs of adjacent vanes; the radially peripheral side of each of said contoured slots having an arc-like profile with a convexity facing said rotation axis.4. The impeller according to claim 3 , characterized ...

Fluid Generating Apparatus

A fluid generating apparatus includes a single phase motor including a stator and a rotor rotatable relative to the stator, a fluid generating device including a plurality of blades, and a clutch connected between the rotor and the fluid generating device for transmitting torque from the rotor to the fluid generating device. The clutch includes a resilient member having one end connected to the rotor for rotation with the rotor and the other end connected to the fluid generating device for driving the fluid generating device to rotate.

Cutting Assembly for a Chopper Pump

A chopper pump including a drive section having a drive shaft, and a housing coupled to the drive section and having an inlet, an outlet, and an internal cavity arranged between the inlet and the outlet. The chopper pump further includes an impeller received within the internal cavity and coupled to the drive shaft for rotation therewith. The impeller includes a recess formed therein. The chopper pump further includes a cutting insert received within the recess of the impeller. The cutting insert includes a cutting groove axially recessed into the cutting insert. The chopper pump further includes a cutting plate coupled to the housing within the internal cavity. The cutting plate includes a cutting extension that extends radially inward. Rotation of the impeller rotates the cutting blade past the cutting extension.

ELECTRIC LIQUID PUMP

The disclosure relates to an electric liquid pump, comprising a pump housing, a motor connected to the pump housing, and an impeller housed in the pump housing and driven by the motor. The pump housing is provided with an inlet port and an outlet port. The impeller has an impeller inlet at the center thereof and an impeller outlet at a peripheral side thereof. The inlet port, the impeller inlet, the impeller outlet, and the outlet port are in flow connection sequentially. The inlet port comprises a columnar first segment and a second segment extending from the first segment. The second segment is close to the impeller inlet with a mouting seat formed therein. The impeller is sleeved on a rotation shaft. One end of the rotation shaft is engaged in the mounting seat. The impeller is rotatable relative to the mounting seat. The mounting seat is partially received in the impeller inlet. A gap between the mounting seat and an inner wall of the impeller inlet is defined as a flow passage for liquid.

Impeller for a centrifugal slurry pump

A improved impeller for use in a centrifugal slurry pump is provided, comprising: a top shroud; a bottom shroud; and a middle portion therebetween, said middle portion having at least one substantially vertical wall defining a slurry flow channel, wherein the top shroud, bottom shroud and middle portion are configured as one piece to together define a first unitary body; at least one vane nose positioned at a leading edge of the at least one substantially vertical wall; and, optionally, a retaining ring mounted over the top shroud to secure the vane nose within the body.

ANTI-GAS LOCK ELECTRIC SUBMERSIBLE PUMP

An electric submersible pump including a housing having a longitudinal axis extending therethrough; and a plurality of stages disposed within the housing each stage having an impeller and a diffuser, the plurality of stages stackable one upon the other along the longitudinal axis of the housing, wherein one or more of the plurality of stages is a standard flow stage, wherein one or more of the plurality of stages is an anti-gas lock flow stage, and wherein the anti-gas lock flow stages are modified relative the standard flow stages to have decreased incidence of trapped gas. 1. An electric submersible pump comprising:a housing having a longitudinal axis extending therethrough; anda plurality of stages disposed within the housing each stage having an impeller and a diffuser, the plurality of stages stackable one upon the other along the longitudinal axis of the housing,wherein one or more of the plurality of stages is a standard flow stage,wherein one or more of the plurality of stages is an anti-gas lock flow stage, andwherein the anti-gas lock flow stages are modified relative the standard flow stages to have decreased incidence of trapped gas.2. The electric submersible pump of claim 1 , wherein the anti-gas lock flow stages have a fluid leakage point absent in the standard flow stages thereby decreasing the incidence of trapped gas.3. The electric submersible pump of claim 2 , wherein the impeller of the one or more anti-gas lock flow stages comprises a top shroud claim 2 , a bottom shroud claim 2 , and one or more vanes.4. The electric submersible pump of claim 3 , wherein the fluid leakage point comprises apertures formed in one or more of the top shroud claim 3 , the bottom shroud claim 3 , and the one or more vanes.5. The electric submersible pump of claim 3 , wherein the diameter of the top shroud is less than the diameter of the bottom shroud claim 3 , thereby forming the fluid leakage point.6. The electric submersible pump of claim 1 , wherein the housing ...

ROTOR AND ROTOR SHAFT FOR MOLTEN METAL

A molten metal rotor receives and retains an end of a molten metal rotor shaft. The rotor shaft has one or more projections at the end received in the rotor. The rotor has an inner cavity, a top surface with an opening leading to the inner cavity, and at least one abutment. The opening includes one or more portions for allowing each projection to pass through the opening and into the inner cavity. The rotor and/or shaft are then rotated so at least one of the outwardly-extending projections is under the top surface of the rotor and is against an abutment. A molten metal pump, rotary degasser scrap melter or other device used in molten metal may utilize a rotor/shaft combination as disclosed herein. 1. A rotor having a cavity for receiving an end of a rotor shaft , the rotor cavity having a top surface with an opening through which the end of the rotor shaft passes and is received in the cavity , the opening leading to the cavity and having at least one elongated section , and the cavity including at least one abutment in the cavity.2. The rotor of wherein the opening includes a plurality of elongated sections in the opening.3. The rotor of that has three elongated sections.4. The rotor of wherein the cavity has a diameter and the opening has a width claim 1 , the width of the opening being less than the diameter of the cavity.5. The rotor of wherein the opening has a first width that does not include the elongated section and a second width that includes the elongated section claim 1 , the first width being less than the second width.6. The rotor of wherein the cavity has a diameter and the first width and second width are each less than the diameter.7. The rotor of wherein the top surface comprises ceramic.8. The rotor of that comprises one or more of the group comprising ceramic and graphite.9. A rotor shaft having a first end that is received in a coupling and a second end for connecting to a rotor claim 1 , the second end having at least one outward-extending ...

DYNAMIC PRESSURE BEARING PUMP

A pump a shaft portion arranged to extend in a vertical direction; a rotor portion arranged to surround an outer circumference of the shaft portion, and including a magnet; and a housing joined to the shaft portion, and arranged to contain the rotor portion. The housing includes a stator arranged opposite to the magnet; a rotor accommodating portion arranged to accommodate the rotor portion; and an inlet and an outlet each of which is arranged to pass through a portion of the rotor accommodating portion. A surface of at least one of the rotor portion, the shaft portion, and the rotor accommodating portion includes at least one first dynamic pressure groove arranged to support rotation of the rotor portion. A surface of at least one of the rotor portion and the rotor accommodating portion includes at least one second dynamic pressure groove arranged to transfer a fluid from the inlet to the outlet. The rotor portion includes a through hole arranged to pass therethrough in an axial direction. 1. A dynamic pressure bearing pump comprising:a shaft portion arranged to extend in a vertical direction;a rotor portion arranged to surround an outer circumference of the shaft portion, and including a magnet; anda housing joined to the shaft portion, and arranged to contain the rotor portion; wherein a stator arranged opposite to the magnet;', 'a rotor accommodating portion arranged to accommodate the rotor portion; and', 'an inlet and an outlet each of which is arranged to pass through a portion of the rotor accommodating portion;, 'the housing includesa surface of at least one of the rotor portion, the shaft portion, and the rotor accommodating portion includes at least one first dynamic pressure groove arranged to support rotation of the rotor portion;a surface of at least one of the rotor portion and the rotor accommodating portion includes at least one second dynamic pressure groove arranged to transfer a fluid from the inlet to the outlet; andthe rotor portion includes a ...

Dynamic pressure bearing pump

A pump a shaft portion arranged to extend in a vertical direction; a rotor portion arranged to surround an outer circumference of the shaft portion, and including a magnet; and a housing joined to the shaft portion, and arranged to contain the rotor portion. The housing includes a stator arranged opposite to the magnet; a rotor accommodating portion arranged to accommodate the rotor portion; and an inlet and an outlet each of which is arranged to pass through a portion of the rotor accommodating portion. A surface of at least one of the rotor portion, the shaft portion, and the rotor accommodating portion includes at least one first dynamic pressure groove arranged to support rotation of the rotor portion. A surface of at least one of the rotor portion and the rotor accommodating portion includes at least one second dynamic pressure groove arranged to transfer a fluid from the inlet to the outlet.

Systems and Methods for Sensing Parameters in an ESP Using Multiple MEMS Sensors

Systems and methods for distributed downhole sensing of operating parameters in an ESP utilizing MEMS sensors. In one embodiment, an ESP is installed in a well. The ESP has a pump, a gas separator, a seal section and a motor. Multiple MEMS sensors are positioned within one or more of the ESP components. Each of the MEMS sensors has a sensor component and on-board circuitry that are formed on a substrate. Each MEMS sensor's sensor component senses a corresponding operating parameter and provides sensed information to the on-board circuitry, which processes the received sensor signal as needed and provides the processed information at an output of the MEMS sensor. The outputs of the different MEMS sensors can be networked together, and the sensor information for the different operating parameters can be communicated to equipment at the surface of the well via a common electrical line.

Method of manufacturing supercharger

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

HORIZONTAL PUMPING SYSTEM WITH PRIMARY STAGE ASSEMBLY AND SEPARATE NPSH STAGE ASSEMBLY

A horizontal pumping system has a motor, a suction chamber and a pump driven by the motor. The pump includes a primary stage assembly and a low NPSH stage assembly connected between the primary stage assembly and the suction chamber. The low NPSH stage assembly is external to the primary stage assembly. The low NPSH stage assembly includes a diffuser connected to the pump housing and a low NPSH impeller contained within the diffuser. The diameter of the low NPSH stage assembly is optionally larger than the diameter of the primary stage assembly. 1. A horizontal pumping system comprising:a motor;a suction chamber; and a primary stage assembly; and', 'a low NPSH stage assembly connected between the primary stage assembly and the suction chamber., 'a pump driven by the motor, wherein the pump comprises2. The horizontal pumping system of claim 1 , wherein the primary stage assembly includes a pump housing and wherein the low NPSH stage assembly is not contained within the pump housing.3. The horizontal pumping system of claim 1 , wherein the low NPSH stage assembly comprises:a diffuser;an impeller; andan intermediate shaft.4. The horizontal pumping system of claim 3 , wherein the diffuser comprises a pressure vessel.5. The horizontal pumping system of claim 3 , wherein the impeller comprises a radial flow impeller.6. The horizontal pumping system of claim 3 , wherein the impeller comprises a mixed flow impeller.7. The horizontal pumping system of claim 3 , wherein the impeller includes a plurality of blades.8. The horizontal pumping system of claim 7 , wherein the impeller includes fewer than five blades.9. The horizontal pumping system of claim 7 , wherein each of the plurality of blades has a curvilinear leading edge.10. The horizontal pumping system of claim 7 , wherein each of the plurality of blades has an inlet meridional curvature defined by the ratio of the length of the blade (h) to the radius of the blade (r).11. The horizontal pumping system of claim 10 , ...

DISCHARGE HEAD FOR A VERTICAL PUMP AND VERTICAL PUMP

A discharge head for a vertical pump includes a base plate configured to mount the discharge head, a top plate, at least one support member connecting the base plate with the top plate, a discharge pipe with an outlet configured to deliver a fluid, and an inner tube. The discharge pipe extends through the base plate. The inner tube is configured to receive a shaft that connects a drive unit with an impeller of the vertical pump, and extends in an axial direction and coaxially within the discharge pipe in a region of the base plate, passing through a wall of the discharge pipe at an intersection, and further extending to the top plate. The inner tube includes a bellows member disposed between the intersection and the top plate. 1. A discharge head for a vertical pump , comprising:a base plate configured to mount the discharge head;a top plate;at least one support member connecting the base plate with the top plate;a discharge pipe with an outlet configured to deliver a fluid, the discharge pipe extending through the base plate; andan inner tube configured to receive a shaft that connects a drive unit with an impeller of the vertical pump, the inner tube extending in an axial direction and coaxially within the discharge pipe in a region of the base plate, passing through a wall of the discharge pipe at an intersection, and further extending to the top plate, the inner tube comprising a bellows member disposed between the intersection and the top plate.2. A discharge head in accordance with claim 1 , wherein the bellows member is firmly connected to the top plate.3. A discharge head in accordance with claim 1 , wherein the bellows member extends over at least half a distance between the intersection and the top plate.4. A discharge head in accordance with claim 1 , wherein the discharge pipe has a vertical section extending in the axial direction claim 1 , a horizontal section extending perpendicular to the axial direction and an intermediate section connecting the ...

ELECTRIC DRIVE MOTOR, PUMP, AND A DOMESTIC APPLIANCE COMPRISING SUCH A PUMP

An electric drive motor for a pump includes an electrically actuatable stator winding, and a rotor which is mounted for rotation in a field of the stator winding in the presence of an annular gap. The rotor includes a motor shaft, a magnet carrier disposed on the motor shaft, and at least one permanent magnet arranged on the magnet carrier. The magnet carrier is made from a ferromagnetic chrome steel. 115-. (canceled)16. An electric drive motor for a pump , comprising:an electrically actuatable stator winding; anda rotor mounted for rotation in a field of the stator winding in the presence of an annular gap, said rotor including a motor shaft, a magnet carrier disposed on the motor shaft, and at least one permanent magnet arranged on the magnet carrier, said magnet carrier being made from a ferromagnetic chrome steel.17. The electric drive motor of claim 16 , wherein the chrome steel is a ferritic or martensitic chrome steel with a chrome proportion of at least 10.5%.18. The electric drive motor of claim 16 , wherein the chrome steel is a nickel-free chrome steel.19. The electric drive motor of claim 16 , wherein the chrome steel has a chrome proportion of 16% to 18%.20. The electric drive motor of claim 16 , wherein the chrome steel has a chrome proportion of approx. 17%.21. The electric drive motor of claim 16 , wherein the chrome steel is of a material number 1.4016 according to EN 10027-2 (X6Cr17 claim 16 , AISI 430).22. The electric drive motor of claim 16 , wherein the magnet carrier includes a laminated core of several metal sheets stacked on top of one another and connected to one another.23. The electric drive motor of claim 16 , wherein the motor shaft is made from a chrome steel.24. The electric drive motor of claim 23 , wherein the chrome steel for the motor shaft is a curable chrome steel.25. The electric drive motor of claim 23 , wherein the chrome steel for the motor shaft is austenitic or martensitic chrome steel.26. The electric drive motor of claim ...