ВИНТОВОЙ КОМПРЕССОР

Изобретение относится к винтовому компрессору. Винтовой компрессор (1) содержит камеру (2) сжатия, образованную корпусом (3), в которой установлены два входящих в зацепление ротора (4, 5), и приводной двигатель (14), снабженный камерой (16) двигателя, образованной корпусом (15), в которой установлен вал (17). Вал (17) приводит в движение по меньшей мере один из двух роторов (4, 5). Корпуса (3) и (15) присоединены непосредственно друг к другу для образования корпуса (28) компрессора. Камеры (16) и (2) не изолированы друг от друга. Валы (7, 8) роторов (4, 5) и вал (17) проходят вдоль направлений (ΑΑ', ΒΒ', СС'), расположенных под углом или перпендикулярно к горизонтальной плоскости. Корпус (3) имеет основание (29) или нижнюю секцию корпуса (28). Корпус (15) образует головную часть (30) или верхнюю секцию корпуса (28). Камера (2) снабжена впускным отверстием (9), расположенным вблизи конца (12) роторов (4, 5), являющихся ближайшими к головной части (30) корпуса (28), а также выходным отверстием ...

СПОСОБ РАБОТЫ МНОГОФАЗНОГО НАСОСА И ЕГО УСТРОЙСТВО

Группа изобретений относится к способу работы многофазного насоса и его устройству. Многофазный насос содержит расположенное со стороны всасывания впускное отверстие (10) и расположенное с напорной стороны выходное отверстие (20). С помощью насоса перекачивают нагруженную твердыми частицами многофазную смесь. Способ его работы включает следующие этапы: закачку многофазной смеси в расположенную с напорной стороны сепараторную камеру (45), отделение газообразной фазы от жидкой фазы и твердой фазы в сепараторной камере (45), отделение жидкой фазы от твердой фазы в сепараторной камере (45), подачу части очищенной от твердой фазы жидкой фазы на сторону всасывания. Подачу жидкой фазы на сторону всасывания производят при помощи линии (50) рециркуляции, в которой расположен клапан (55). Клапан (55) после запуска и после достижения стабильной работы перекрывают для начала закачивания и увеличения напора многофазной смеси. Группа изобретений направлена на уменьшение износа винтов и корпуса. 2 н.

Жидкостно-кольцевой насос

Полезная модель относится к технике жидкостно-кольцевых насосов с встроенным измельчителем. Жидкостно-кольцевой насос содержит корпус (1) с входным (2) и выходным (3) патрубками, связанными с его входной (4) и выходной (5) полостями соответственно. Он содержит также шнек (6), установленный в центральной полости (7) корпуса (1) с обеспечением возможности вращения на соединенным с электродвигателем (8) валу (9). Шнек (6) снабжен на своем входном конце измельчителем, который включает присоединенный к входному концу шнека (6) нож (10) со снабженными режущими кромками криволинейными лопастями и неподвижный фланец (11) со снабженными режущими кромками зубцами. Нож (10) и неподвижный фланец (11) выполнены с обеспечением возможности свободного вращения ножа (10) внутри неподвижного фланца (11). Насос содержит также узел реверсирования электродвигателя (8) и мерную емкость (12), размещенную на корпусе (1) насоса. В верхней части корпуса (1) в его центральной полости (7) выполнено снабженное запорным ...

РОТОРНАЯ МАШИНА

НАСОС ВЫСОКОГО ДАВЛЕНИЯ

МУЛЬТИФАЗНЫЙ НАСОС

РОТОРНЫЙ НАСОС С ОПТИМИЗИРОВАННЫМИ ВПУСКАМИ И ВЫПУСКАМИ

... 1. Роторный насос (10), состоящий из корпуса (12) насоса, который снабжен впуском (14) и выпуском (16), причем корпус насоса (12) имеет облицовку (18), и в корпусе насоса (12) или же в пределах облицовки (18) расположены по меньшей мере два противоположно вращающихся ротора (20), которые во время их вращения образуют насосные камеры (22), причем роторы (20) уплотнены друг по отношению друг к другу, по отношению к корпусу (12) насоса и по отношению к облицовке (18), и причем в корпусе (12) насоса и/или в облицовке (18) в каждой насосной камере (22) расположены по меньшей мере две выемки (24), и причем выемки (24) расположены в пространственной близости к впуску (14) и/или к выпуску (16), отличающийся тем, что корпус (12) насоса и/или облицовка (18) в области впуска (14) и в области выпуска (16) имеет в каждом случае усиления (26) облицовки (18), посредством которых реализовано уменьшение поперечного сечения и, что поперечное сечение впуска (14) и выпуска (16) расширяются в направлении от ...

ПЛACTИHЧATЫЙ OБ'EMHЫЙ HACOC

Kraftstoffpumpe und Kraftstoffpumpenmodul

Eine Kraftstoffpumpe (10) ist mit einem Saugfilter (90, 296) verbunden, welcher mit einem Filterverbindungsabschnitt (94, 294) vorgesehen ist, welcher ein zylindrisches Loch (95) und einen hervorstehenden Abschnitt (96, 296) hat, welcher radial nach innen von einer Innenumfangswand (95a) des zylindrischen Lochs (95) hervorsteht. Die Kraftstoffpumpe saugt den Kraftstoff, welcher durch den Saugfilter (90) gefiltert ist, an. Die Kraftstoffpumpe (10) ist mit einem Sauganschluss (74) vorgesehen, welcher mehrere Saugöffnungen (76) an einer Seite des Saugfilters (90) hat, um den Kraftstoff dort hindurch anzusaugen, und einem Pumpenverbindungsabschnitt (78), welcher an einer Außenseite der mehreren Saugöffnungen (76) vorgesehen ist und mit dem Filterverbindungsabschnitt (94) verbunden ist. Der Pumpenverbindungsabschnitt (78) hat eine Außenumfangswand (78a), deren äußere Form mit einer Form der Innenumfangswand (95a) übereinstimmt, und einen Vertiefungsabschnitt (79), welcher nach innen von der ...

FLÜGELZELLENPUMPE

Ein Aufnahmeraum 10, der durch eine obere Platte 8 geschlossen ist, beinhaltet eine Pumpenkammer 20, die durch einen darin angeordneten Rotor 18 unterteilt ist. Der Flügel 21 am Außenumfang saugt Fluid an und lässt es aus, indem er ein Volumen der Pumpenkammer 20 in Verbindung mit der Drehung des Rotors 18 ändert. Ein Sauganschluss 26 ist an einer unteren Fläche einer oberen Platte 8 ausgespart und ist mit einem zweiten Saugkanal 28 an einer äußeren Umfangsseite eines Aufnahmeraums 10 verbunden, während sich ein Sauganschluss 26 in der Flügelvorverstellrichtung erstreckt, während eine zusätzliche Gleitkontaktfläche 53 zwischen dem Sauganschluss 26 und der inneren Umfangsfläche des Aufnahmeraums 10 in der Pumpenkammer 20 belassen wird. Auf der proximalen Endseite des verlängerten Abschnitts wird ein im Wesentlichen linearer schräger Pufferabschnitt 52a gebildet, der in Richtung der inneren Umfangsseite verschoben ist, während der Flügel in der Flügelvorverstellrichtung von der inneren Umfangsfläche ...

Hydrotransformator

Die Erfindung betrifft einen Hydrotransformator mit einer Vielzahl von Verdrängerräumen und mit einer Steuerscheibe, die um eine Drehachse verdrehbar ist, um eine Pumpwirkung/Motorwirkung des Hydrotransformators zu verstellen, und die Steuerausnehmungen aufweist, denen jeweils mehrere Verdrängerräume zugeordnet sind. Die Erfindung zeichnet sich dadurch aus, dass sich die Größe der Verdrängerräume im Betrieb des Hydrotransformators, bezogen auf die Drehachse der Steuerscheibe, radial, tangential und/oder in Umfangsrichtung, verändert, um die Pumpwirkung/Motorwirkung des Hydrotransformators zu erzielen.

Hermetischer Rotationskompressor

Ein Rotor (1) hat an seinen beiden Achsenendbereichen einen oberen inneren Umfangsbereich (5a) mit großem Durchmesser und einen unteren inneren Umfangsbereich (5b) mit großem Durchmesser, die innere Durchmesser haben, die größer als der innere Durchmesser des axialen Mittenbereichs des Rotors (1) sind, und die in der radialen Richtung versetzt sind. Eine Kurbelwelle (2) hat einen Durchgang (14), der in der Kurbelwelle (2) gebildet ist und dem Kältemittel ermöglicht, durch ihn hindurchzuströmen, und ein Gasentlüftungsloch (2a), das eine Verbindung zwischen dem Durchgang (14) und zumindest einer Ausgabeöffnung, die in der äußeren Umfangsfläche der Kurbelwelle (2) gebildet ist, herstellt. Die zumindest eine Ausgabeöffnung ist an einer Position gebildet, die der inneren Umfangsfläche des unteren inneren Umfangsbereichs (5b) mit großem Durchmesser auf der Seite der Kompressionseinheit (20) zugewandt ist.

Zahnradpumpe und Luftbefeuchtungsvorrichtung mit einer derartigen Zahnradpumpe

Zahnradpumpe (1), mit einem einen Einlass (3) und einen Auslass (4) aufweisenden Gehäuse (2), in dem ein auf einer Antriebswelle (5) angeordnetes Zahnrad (6) aufgenommen ist, das mit einem auf einer mitlaufenden Welle (7) angeordneten Zahnrad (8) im Eingriff ist, dadurch gekennzeichnet, dass in einem zwischen den beiden Zahnrädern (6, 8) und dem Auslass (4) gebildeten Freiraum eine Strömungsblende (11) angeordnet ist.

Flügelzellenpumpe

Der Erfindung liegt die Aufgabe zugrunde, eine neuartige Flügelzellenpumpe mit einer neuartigen Pumpenkammergeometrie zu entwickeln, welche bei allen Bauformen von Flügelzellenpumpen eine strömungstechnisch optimale vollständige Befüllung der Pumpenkammern insbesondere bei Drehzahlen im Bereich von 4.500 U/min bis über 6.000 U/min gewährleistet und zudem fertigungstechnisch einfach herstellbar ist. Die erfindungsgemäße Flügelzellenpumpe mit in der Zylindermantelfläche des Rotors (3) zwischen den Lagernuten (4) der Flügelplatten (5) über die gesamte Rotorbreite verlaufende, parallel zu den Lagernuten (4) der Flügelplatten (5) angeordneten, von den Lagernuten (4) um einen Lagersteg (11) beabstandete Querrillen (12), zeichnet sich dadurch aus, dass diese Querrillen (12) einen unsymmetrischen Querschnittsverlauf (13) aufweisen, welcher in jeder Zellenkammer (10) über einen Tiefstpunkt (14) verfügt, der in Drehrichtung gesehen stets nach der Zellenkammermittenachse (15) angeordnet ist. Die Erfindung ...

Rotary trochoidal piston pump - with inlet and outlet via piston through housing end walls near radial sealing strips in housing

The pump is intended for incompressible media and is of the type having radial sealing strips in the housing and whereby the inlet and outlet of the medium takes place via ports in the pistons surface and ducts in the pistons connecting with inlet orifices in one and outlet orifices in the other housing end wall. The orifices are arranged within the inner trochoid curve of the housing and adjacent to the radial seals. The number of piston posts is one less than the number of corresponding orifices. The arrangement is such that at top dead centre position the inlet ports, and at bottom dead centre position the outlet ports pass a radial seal.

PUMPENAGGREGAT ZUM ZUFÜHREN VON KRAFTSTOFF, BEVORZUGT DIESEL, ZU EINEM VERBRENNUNGSMOTOR

In einem Pumpenaggregat zum Zuführen von Kraftstoff, bevorzugt Diesel, zu einem Verbrennungsmotor wird der Kraftstoff dem Verbrennungsmotor von einer Kolbenpumpe (2) zugeführt, der er wiederum von einer Zahnradpumpe (3) zugeführt wird, die ein Paar Zahnräder (31) aufweist, die im Innern eines Pumpengehäuses (28) aufgenommen sind, das becherförmig ist und durch einen Deckel (34) geschlossen wird, der eine Ansaugkammer (35) zum Ansaugen des Kraftstoffs in die Zahnradpumpe (3) und eine Förderkammer (36) zum Fördern des Kraftstoffs zur Kolbenpumpe (2) bildet, wobei der Deckel (34) einen Zwischenraum (37) aufweist, der mit der Förderkammer (36) über mindestens eine Öffnung (40), die durch den Deckel (34) hindurch ausgebildet ist, kommuniziert.

Förderpumpe mit einem schwenkbaren Wandelement

Förderpumpe (1), insbesondere Außenzahnradpumpe, umfassend: a) ein Gehäuse (2), welches einen Pumpenraum (3) einfasst, b) mindestens ein relativ zu dem Gehäuse (2) drehbares Förderelement (4, 5), welches in dem Pumpenraum (3) angeordnet ist, c) einen saugseitig angeordneten Einlasskanal (6), der angepasst ist, Fluid in den Pumpenraum (3) zuzuführen, und einen druckseitig angeordneten Auslasskanal (7), der angepasst ist, Fluid aus dem Pumpenraum (3) abzuführen, d) einen ersten Zuführkanal (8) und einen zweiten Zuführkanal (9), wobei der erste Zuführkanal (8) und der zweite Zuführkanal (9) in den Einlasskanal (6) münden, gekennzeichnet durch, e) zumindest ein relativ zu dem Gehäuse (2) schwenkbares Wandelement (10), das zumindest teilweise in dem Einlasskanal (6) angeordnet ist.

Pumpe

Gerotorpumpe zum Fördern von Fluid, insbesondere als Kraftstoff-Förderaggregat für Kraftfahrzeuge

Flügelzellenpumpe

Flügelzellenpumpe mit folgenden Merkmalen: - in einem Gehäuse ist eine Steuerplatte (8) und eine Stirnplatte (6) vorgesehen, die einen auf einer Welle (3) festen Rotor (4) mit Schlitzen und einen Kurvenring (2) zwischen sich einschließen; - in den Schlitzen sind radial verschiebliche Flügel (5) geführt; - der Kurvenring (2) und die Steuer- (8) und die Stirnplatte (6) sind mittels Stifte (10, 11) im Gehäuse (7) gehalten; - in die einander zugewandten Flächen der Steuer- (8) und der Stirnplatte (6) sind Saug- und Drucknieren (12, 12A bzw. 13, 13A) mit Steuerkanten eingearbeitet, die einander gegenüberliegen, dadurch gekennzeichnet , daß die von den Saug- und Drucknieren gebildeten Steuerkanten (15, 15A, 16, 16A, 17, 17A, 18, 18A) in der Stirnplatte (6) gegenüber den Steuerkanten der Saug- und Drucknieren (12, 12A bzw. 13, 13A) in der Steuerplatte (8) derart zurückversetzt sind, daß die umfangsmäßige Erstreckung der Saug- und Drucknieren...

Pumpe mit veraenderlicher Foerdermenge

Hydraulische Drehkolbenmaschine

Power driven gear-type pump

... 1,063,099. Valves. SWF-SPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU G.m.b.H. June 4, 1964 [July 19, 1963], No. 23113/64. Heading F2V. [Also in Division F1] In a rotary pump, a passage 13 connecting a chamber for pumping gears 11 to an outlet pipe-socket 4 houses a non-return valve 16 and a pressure-relief valve 17, the latter being situated adjacent a passage 21 communicating with a reservoir or sump 7 containing a pipe 22, which is connected to an inlet passage 12 on the low-pressure side of the gears. The valve 16 is slidably mounted on one end of a shaft 15 whose other end carries a knob 20, the midportion of the shaft being attached to a flexible diaphragm 23 controlled by a compression spring 19. The valve 17 is constituted by a compressible ring abutting a supporting plate 26, which lies adjacent the diaphragm. In operation, the valve 16 is depressed by fluid flowing in the passage 13; and, in the event of excessive pressure developing in said passage, the valve 17 is compressed by ...

Improvements in rotary pumps, engines, compressors or exhausters

... 433,488. Rotary pumps. SMITH, F. L., 2, Alexandra Villas, Burton Road, Littleover, Derbyshire. April 26, 1934, No. 12588. [Class 110 (ii)] The pump, of the outwardlysliding vane type, has vanes c, with lips g, pairs of vanes being connected by rods d. Passages f permit free flow of fluid between the pumping chambers and the undersides of the vanes. The casing is bored as a true circle m, and a piece n<1> inserted as the abutment, has an inner surface n also forming part of a circle. Fixed vanes o, o<1>, in the inlet and outlet ports k, j, serve to guide the fluid and create a change from kinetic energy to pressure energy in the delivery port, and vice versa in the inlet port k. The vanes o, o<1> are detachably held in place and extend outwards from a centre rib t which guides the tips of the vanes c. Split packing rings r are placed in circumferential grooves q and expanded and held stationary by conical ends of radial screws. Eccentric grooves are cut from the sides of these rings. Fig ...

Improvements in or relating to multiple discharge pumps

... 581,441. Rotary pumps. PESCO PRODUCTS CO. Dec. 24, 1943, No. 21643. Convention date; Dec. 12, 1942. [Class 110 (ii)] A pump of the outwardly-sliding vane type has an inlet 24 for liquid, a main outlet 68 and a second, smaller, outlet 28 through which liquid is delivered past a non-return valve 70 to the cooling jacket of a driving motor. An adjustable pressure-relief valve 38 is fitted, and opens when a shut-off valve is closed, but the cooling circuit continues to function. The port 28 is positioned on the upper side of the pump to reduce the risk of foreign matter being carried to the pipe 30.

High pressure pump

Rotary sliding vane pump

A pump for liquid fuels comprises a body 1 defining a cylindrical chamber, a rotor 14 eccentrically mounted in the chamber defining an operating space 7 therebetween and having axial grooves 15 receiving radially extensible vanes 16 which sealingly engage in use the cylindrical surface of the chamber. The chamber is closed at one end by a rear end wall of body and at the other end by a cover 22. A suction space (3, Fig. 2) communicates with that part of the operating space 7 in which underpressure is generated in use, and a delivery space 4 communicates with that part of the operating space 7 in which overpressure is generated in use. The suction and delivery spaces (3), 4 each communicate with both ends of the chamber via respective apertures 8, 31, (11), 12 formed in the rear end wall of the body and the cover. A by-pass overload valve (5) is arranged between the spaces (3), 4. ...

Separated helical gear pump

Improved rotary pump

... 687,998. Rotary pumps. GENERAL MOTORS CORPORATION. March 21, 1951 [April 1, 1950], No. 6728/51. Class 110(ii) A pump having sliding-vanes 66 within an adjustable stator 62, to vary the pump capacity, is provided with large inlet and outlet passages 22, 30 leading respectively to narrow ports 24, 29 the ends of which are tapered off in the form of ramps to effect a gradual build up and release of pressure as the vanes pass by. A spring 68, Fig. 4 (not shown), forces the stator 62 upwards to give the greatest eccentricity between the stator and rotor 64 for starting up purposes. A piston valve 40 has its interior 42 open to the pump discharge pressure which, at first, also communicates with chambers 70, 72 at one end of the stator, and a chamber 74 at the other end acting in the same direction as the spring 68. As the vanes pass over a ramp 96, of the outlet passage 29, fluid fills passages 29, 26 and bore 42 building up pressure against a valve spring 48. When the pump pressure exceeds that ...

ROTARY PUMP

Rotary pump

The trochoid pump includes an outer gear rotor and an inner gear rotor, which are different in number of teeth from each other, pressure chambers defined by adjoining teeth of both rotors and an end plate. The pressure chamber volumes are increased or decreased in accordance with rotations of both rotors. An intake opening communicates with the pressure chambers whose volumes are gradually increasing, out of the pressure chamber and an outlet opening communicates with the pressure chambers whose volumes are gradually decreasing. A starting end of the intake opening starts to be opened at a minimum gap position or a neighborhood position thereof. The starting end of the intake opening can be opened at a position advanced through a rotary angle of 4 degrees in the rotating direction of both rotors from the minimum gap position.

Gear pump

A gear pump comprising a plurality of gear pairs 30, each pair having a respective input port and output port 34, and a connector device 36 to changeably select which output port(s) is connected to a base load fluid line and connect the other output port(s) to an additional load fluid line. Preferably the pairs are equally sized and are angularly spaced around a central connector device which is rotatably operable to changeably select the output ports. Preferably an indexing actuator operates the connector device and sequentially selects the output port(s) connected to the base load fluid line after each period of operation of the pump. Also claimed is an aero engine utilising the pump to pump fuel to a control arrangement which returns excess fuel received from the additional load fluid line back to the pump. By switching the output ports between the base load fuel line and the additional load fuel line intermittently, the gears wear at substantially the same rate and service life of the ...

Improvements in and relating to fire-engine pumps

... 225,843. Naamlooze Vennootschap Kopergieterij, Appendage-en Pompenfabriek van, G. Dikkers & Co- Dec. 7, 1923, [Convention date]. Assisting suction.-To allow water to be supplied to a fire-engine from a distance through collapsable hose, part of the pressure water from the fire-engine 1 is forced through a pipe 7 to a jetpump 12 immersed in the feed water, thus supplying water through pipes 8, 9 to the suction side 3 of the engine which delivers through jet pipes 10, 11. Make-up water is carried in a vessel 2 connected to the suction and delivery chambers of the engine. A strainer 16 surrounds the jet-pump 12.

Improvements in or relating to rotary piston or rotary vane apparatus

... 909,089. Rotary pumps and motors. EICKMANN, K. Oct. 17, 1958 [Oct. 19, 1957; Dec. 31, 1957], No. 13374/62. Divided out of 903,037. Class 110 (2). A rotary pump (or motor) comprises a rotor assembly mounted on a non-rotating pintle 62, Figs. 1 and 2, and eccentrically within the inner ring 30 of an anti-friction bearing whose outer ring 33 is provided with an arm 80 to adjust the eccentricity and hence the output of the pump. The pintle which is formed with passages 59, 63 conveying fluid to and from pump chambers 28 is prevented from rotating by a universal joint 12a connecting the pintle to a housing 32 secured to the pump or motor casing 32a. Peripheral pintle grooves 18, 19 communicating with the passage 59 and peripheral pintle grooves 20, 21 communicating with the passage 63 together with the ends 59a, 63a of the passages permit fluid-pressure balancing of the pintle and the rotor assembly to " float " thereon. Fluid connections 3, 8 opening into the housing 32 and communicating respectively ...

ROTARY POSITIVE-DISPLACEMENT PUMPS

... 1424077 Rotary positive-displacement devices TRW Inc 3 July 1973 [7 July 1972] 31732/73 Heading F1F In a pump which may be of the slipper-vane type and as particularly described is substantially identical with that described in Specification 1061088 deflection of the pressure plate 30 into contact with the rotor 24 is obviated by a gap between this plate and the separator plate 32. The gap may be due to a recessed portion 85 between lands 87, 88 circumjacent outlet ports 74.

Improvements in or relating to variable ratio power transmission apparatus

... 775,507. Gear pumps. HOBBS TRANSMISSION, Ltd. Dec. 16, 1955 [Jan. 14, 1955], No. 1187/55. Class 110 (2). A rotary pump for a variable ratio power transmission apparatus is provided with a suction pipe 13 having a closed end and a series of ports 16, the sum of the cross-sectional areas of which is less than the cross-sectional area of the pipe and such that a minimum pressure drop of at least one pound per square inch exists across the ports. According to the Provisional Specification, the ports may be provided with manual or automatic variable-orifice control means.

PORTABLE HAND-HELD HYDRAULIC TOOL

EXTRUSION

WING CELL MACHINE

INTERIOR GEAR PUMP.

ROTATING POSITIVE-DISPLACEMENT ENGINE WITH AT LEAST TWO OUTER SPLINE PROMOTION GEAR WHEELS AND HOUSINGS FOR SUCH A MACHINE

ARTIFICIAL LIFTING SYSTEM FOR OIL EXTRACTION

In one aspect, the present invention provides apparatus for pumping a valuable fluid from an underground area, the apparatus comprising an elongate casing; a tubing string running inside and along the length of the casing, a space being formed between the outer surface of the tubing string and the inner surface of the casing; a progressive cavity motor in fluid connection with the tubing string such that a driving fluid pushed through the tubing string axially rotates the progressive cavity motor; a progressive cavity pump configured to be axially rotated by axial rotation of the progressive cavity motor, the progressive cavity pump being configured to draw the valuable fluid from an underground area surrounding the progressive cavity pump into an inlet of the progressive cavity pump and expel the valuable fluid through an outlet of the progressive cavity pump; and a seal formed between the outer surface of the progressive cavity pump and the inner surface of the casing so as to substantially ...

Vane cell machine

BALANCED PRESSURE, VARIABLE DISPLACEMENT, DUAL LOBE, SINGLE RING, VANE PUMP

A pump including a pressure plate having two inlets and outlets, wherein each inlet has an auxiliary intake port in fluid communication with the inlet, and each outlet has an auxiliary discharge port in fluid communication with the outlet, and a cam/rotor assembly attached to the pressure plate. The cam/rotor assembly includes a rotatable cam having an opening, a rotor within the cam opening, the rotor having multiple radial slots, and multiple vanes that move within the slots, wherein a pumping chamber is defined by a space between rotor and cam. Rotor rotation within the cam causes the vanes to extend and retract within the pumping chamber. The movement of the vanes discharges into the outlets and auxiliary discharge ports a fluid drawn into the pumping chamber via inlets and auxiliary intake ports. The auxiliary inlet and auxiliary discharge ports reduce pressure pulsations in a variable displacement dual-lobe vane pump.

ROTARY FLUID PUMP

PUMP ASSEMBLY

STACK-UP PUMP ASSEMBLY

ENCLOSED CIRCULATION TOOL FOR A WELL

An enclosed circulation tool for a well including a tubular body having a top end, a bottom end and an interior cavity. A progressive cavity pump positioned at the bottom end of the body, the pump having a rotor mounted within a stator. The rotor has an upper end and a lower end, with the upper end extending into the interior cavity. A drive is coupled to and adapted to rotate the rotor in order to draw sand into the interior cavity. A first fluid passage is provided along which fluids from pumped from surface pass to fluidize solids within the interior cavity. A second fluid passage is provided along which fluidized solids from within the interior cavity pass to surface.

DISTRIBUTOR APPARATUS WITH A PAIR OF INTERMESHING SCREW ROTORS

Distributor apparatus (10) for distributing a plurality of portions or streams of a flowable material comprising an enclosure (16) which locates interengaging rotors (48, 50). An inlet port (66) is provided in an upper part of the enclosure (16), which connects to a manifold (34) with five spaced inlets (36) through which material can pass to drive the rotors (48, 50). Material can pass round the rotors (48, 50) to a plurality of spaced outlets (38) for discharging to and from the apparatus (10).

EXTERNAL GEAR PUMP INTEGRATED WITH TWO INDEPENDENTLY DRIVEN PRIME MOVERS

A pump includes a casing defining an interior volume. The pump casing includes at least one balancing plate that can be part of a wall of the pump casing with each balancing plate including a protruding portion having two recesses. Each recess is configured to accept one end of a fluid driver. The balancing plate aligns the fluid displacement members with respect to each other such that the fluid displacement members can pump the fluid when rotated. The balancing plates can include cooling grooves connecting the respective recesses. The cooling grooves ensure that some of the liquid being transferred in the internal volume is directed to bearings disposed in the recesses as the fluid drivers rotate.

Appareil rotatif, utilisable comme pompe ou comme moteur.

Fluidummaschine, insbesondere für Kraftübertragungsanlagen und Pumpwerke.

Zahnradpumpe für Kunstseidenspinnmaschinen

Maschine mit rotierendem Kolben zur Förderung von Gasen und Flüssigkeiten.

Schraubenpumpe mit umkehrbarer Drehrichtung

Pompa ad ingranaggi con distributore a comando pneumatico per impianti di sollevamento di cassoni ribaltabili di automezzi

Pumpe

Speiseanlage zur Versorgung mehrerer Verbraucherstellen

Flüssigkeitsgetriebe mit je einem als Pumpe bzw. als Motor arbeitenden Verdrängeraggregat

Rotations-Pumpe

Rotations-Pumpe

Flüssigkeitspumpe, insbesondere Heizölpumpe

Zahnradpumpe

Zahnradpumpe, insbesondere Schmelzepumpe

OIL PUMP, IN PARTICULAR LUBRICATING OIL PUMP FOR TURBOMACHINES.

ELEVATION AND STEERING METERING PUMP.

Sausage meat feed pump

The pump to feed paste foodstuffs, esp. a blade cell pump, has a 2nd vacuum opening (58) closer to the suction zone and a barrier (65) which links either both vacuum openings or only one to the vacuum supply, selectively.

Gear pump with pump inlet.

Zahnradpumpe mit ineinandergreifenden von einem Pumpengehäuse (2) umschlossenen Zahnrädern (1, 1´) mit auf Längsachsen (9, 10) angeordneten, jeweils seitlich von den Zahnrädern (1, 1´) abstehenden Lagerzapfen (5, 6), wobei mindestens einer der Lagerzapfen (5, 6) zumindest über einen Teil seiner axialen Erstreckung einen Lagerzapfendurchmesser aufweist, der im Bereich von 90% bis 100% eines Fusskreisdurchmessers der Verzahnung des zugehörigen Zahnrades (1, 1´) liegt, dadurch gekennzeichnet, dass eine Verzahnungsbreite b mindestens doppelt so gross wie ein Achsabstand a der Längsachsen (9, 10) ist, wobei die Verzahnungsbreite b eine Ausdehnung der Zahnräder (1, 1´) parallel zu den Längsachsen (9, 10) ist, dass ein Querschnitt eines Pumpeneinlaufs in einer oberen Verzahnungsebene (24) quadratisch ist, wobei die obere Verzahnungsebene (24) einer Ebene just oberhalb der Verzahnung der Zahnräder (1, 1´) entspricht, und dass saugseitig ein Übergangsbereich (25) mit einer Wandung (26) vorgesehen ...

Doppelpumpe und Ölfördervorrichtung zum Pumpen von Öl für eine Verbrennungskraftmaschine.

Die vorliegende Erfindung betrifft eine Doppelpumpe (1) umfassend: eine Zahnradanordnung (2) mit drei Zahnrädern (3, 4, 5) von denen ein erstes (4) der drei Zahnräder (3, 4, 5) mit den beiden anderen Zahnrädern (3, 5) kämmt, ein Gehäuse (6), welches die Zahnradanordnung (2) derart umgibt, dass beieinem Rotieren der Zahnräder (3, 4, 5) der Zahnradanordnung (2) ein erster Ansaugbereich (7) und ein zweiter Ansaugbereich (8) sowie ein erster Abgabebereich (9) und ein zweiter Abgabebereich (10) durch die Zahnradanordnung (2) gebildet ist, wobei das Gehäuse (6) einen mit dem ersten Ansaugbereich (7) fluidisch verbundenen ersten Ansaugeinlass (11) aufweist. Die Pumpe (1) ist dadurch gekennzeichnet, dass das Gehäuse (6) einen mit dem zweiten Ansaugbereich (8) fluidisch verbundenen zweiten Ansaugeinlass (12) aufweist, und der erste Ansaugeinlass (11) und der zweite Ansaugeinlass (12) fluidisch voneinander getrennt sind.

STATOR ROTARY PLATE PUMP

COMPRESSOR AND/OR PUMPING UNIT FOR FLUID MEDIUM

IMPROVED COMPRESSOR AND/OR PUMPING UNIT FOR FLUID MEDIUM

Rotary compressor structure and rotary compressor used for liquid cold medium pump conveying

Improvement with the rotary pumps with pallets and similar structures

Polymer gear pump - with gear chamber and sealed zone shaped for optimum efficiency

Automatic hydraulic control and constant for starting of the fire pumps equipped with ejector using exhaust fumes

Radial-distribution, limited-suction pump

PUMP HAS CARTRIDGE

SYSTEM OF LUBRICANT SWEEPING, AND GEAR PUMP EQUIPPING THIS SYSTEM

SUBMERSIBLE PUMPING APPARATUS WITH INTEGRATED FILTER AND SEALED CIRCUITRY

VANE PUMP DEVICE TO MINIATURIZE AND LIGHTEN THE STRUCTURE BY OMITTING A SEALING MEMBER

PURPOSE: A vane pump device is provided to reduce the production cost, the inspection process and parts by deleting a sealing member. CONSTITUTION: A vane pump device comprises a housing(70), a reservoir tank(1), and a vane pump(10). The housing has an ejecting passage(74). The reservoir tank stores the working fluid. The reservoir tank is combined in the housing. The vane pump is installed inside the reservoir tank. The vane pump ejects the working fluid compacted in the ejecting passage. An inlet and an outlet are formed in the front side of the vane pump. The outlet is connected to the ejecting passage. A suction connecting passage is formed around the inlet with being separated from the housing. © KIPO 2009 ...

지로터 펌프를 구비한 연속 가변 트랜스미션

... 회전 차단기로서도 작용하는 통합형 지로터 펌프가 구비된 CVT가 명세서에서 설명된다. 일 예시적인 실시 예로서, 지로터 펌프는 라디에이터를 통해 CVT의 중공 샤프트에 윤활 및 냉각 유체를 펌핑하는데 이용된다.

PUMP SYSTEM

The present invention provides a pump system comprising a bearing housing coupled to a pump liner, the pump liner defining a fluid conduit, the pump liner comprising a fluid inlet and a fluid outlet; and at least one rotor having a first rotor portion and a second rotor portion, the first rotor portion being disposed within the fluid conduit and the second rotor portion being disposed within the bearing housing; the first rotor portion comprising a first conveying stage adjacent to the bearing housing, and a second conveying stage adjacent to the first conveying stage, the first and second conveying stages being configured to convey a fluid, the first conveying stage being configured to convey the fluid from the bearing housing into the fluid conduit. The new pump systems rely on a dynamic restriction to reduce the need for mechanical seals between bearing housings and raw process fluid.

IMPROVED FLUID COMPRESSOR AND/OR PUMP ARRANGEMENT

The present invention relates to a compressor or pump unit for the production or flow of compressed fluid and more particularly to a new uniquely designed compressor which has the capabilities to both draw fluid from an intake opening and direct dischargeable compressed fluid to a storage tank utilising a single compressor chamber simultaneously.

PUMP SYSTEM

The present invention provides a pump system comprising a bearing housing coupled to a pump liner, the pump liner defining a fluid conduit, the pump liner comprising a fluid inlet and a fluid outlet; and at least one rotor having a first rotor portion and a second rotor portion, the first rotor portion being disposed within the fluid conduit and the second rotor portion being disposed within the bearing housing; the first rotor portion comprising a first conveying stage adjacent to the bearing housing, and a second conveying stage adjacent to the first conveying stage, the first and second conveying stages being configured to convey a fluid, the first conveying stage being configured to convey the fluid from the bearing housing into the fluid conduit. The new pump systems rely on a dynamic restriction to reduce the need for mechanical seals between bearing housings and raw process fluid.

Rotary piston machine for transporting liquid or gaseous media

This invention relates to an improvement in a rotary piston machine of trochoidal construction for transporting a fluid medium, having working chambers formed between a trochoidal piston and a housing corresponding to the coordinated outer envelope curve, said chambers being separated from each other by radial seals in the housing, wherein the medium is supplied through openings within the inner envelope curve in the housing side wall and in a recess in the piston and passes from the recess by way of control openings in the peripheral piston surface to the working chamber, and having outlet openings in the housing closed-off by check valves, the improvement comprising A. the piston has the form of a saddle-free epitrochoid 1:1, B. the supply openings in the housing side wall are in the area of the radial seals, C. the piston recess is in the front piston wall and extends over such a portion of the piston that during rotation, continuously at least one supply opening and, in the dead-center ...

POLYETHERIMIDE PUMP

A positive displacement pump and methods of making a positive displacement pump having a component, the component having a density ranging from more than 0 to 3 g/cm 3 , a glass transition temperature (Tg) greater than or equal to 150° C., and a yield strength retention greater than 90% after soaking in engine oil for 7 days at 150° C.

Vane pump device

An embodiment provides a vane pump device includes multiple vanes; a rotor that rotates and includes vane grooves for supporting the vanes and accommodating oil; a cam ring that includes an inner circumferential cam ring surface provided with a high pressure region and a low pressure region, and that surrounds the rotor; and an inner plate that covers an opening of the cam ring. The inner plate includes a first portion that supplies high pressure oil to the vane grooves, and a second portion that supplies low pressure oil to the vane grooves. Among vane grooves which support vanes positioned in the high pressure region of the cam ring, the first portion supplies high pressure oil to vane grooves, the number of which is less than the number of vanes positioned in the high pressure region.

ROTARY ENGINE.

Engine oil pump with reduced noise and vibration

An oil pump includes a pump housing comprising an oil input port formed at one side of the pump housing. An oil output port is formed at another side of the pump housing. An oil flow unit is provided at a center of the pump housing, and the oil flow unit compresses and discharges oil input from the oil input port toward the oil output port. A bypass passage circulates the oil from the oil output port to the oil input port. A pressure control chamber allows the oil to flow through the oil output port and the bypass passage. The pressure control chamber has a plunger that is supported by an elastic body and moves in accordance with oil pressure. A bypass hole is formed at one side of the pressure control chamber and allows the oil passing through the oil output port to flow to the bypass passage when the plunger moves due to the oil pressure. The amount of oil flow increases depending on a movement distance of the plunger.

Oil pump structure of transmission

In an oil pump structure of an automatic transmission using a torque converter, a hydraulic pressure chamber is defined by a pump housing and a pump cover, to rotatably accommodate therein inner and outer rotors. First and second inflow ports respectively communicating with an oil strainer and a control valve are formed in the outside surface of the pump cover separately from each other. First and second oil inflow passages communicating with the respective inflow ports, a merged-flow portion that downstream portions of the first and second oil inflow passages are merged with each other, a downstream-side oil distribution channel intercommunicating a downstream side of the merged-flow portion and the hydraulic pressure chamber, are formed in at least one of the pump housing and the pump cover.

COMPRESSOR

Disclosed is a scroll type compressor having an Oldham's ring having an asymmetrical structure with respect to a long or minor axis thereof.

VANE PUMP DEVICE AND HYDRAULIC APPARATUS

Disclosed is a vane pump device including: an even number of vanes; a rotor; a cam ring; an inner plate; and an outer plate. An inner-plate high pressure side through-hole and an inner-plate low pressure side recess portion are formed separately from each other in a rotation direction in cam ring side end surfaces of the inner plate and the outer plate, and communicate with a columnar groove which is a space of a vane groove on a rotation center side. The position of an inner-plate high pressure side through-hole upstream end and the position of an inner-plate low pressure side recess portion upstream end are point-symmetrical with each other with respect to the rotation center. 1. A vane pump device comprising:an even number of vanes;a rotor that includes vane grooves which are recessed from an outer circumferential surface of the rotor in a rotational radial direction such that the vanes are supported to be movable in the rotational radial direction, and that rotates due to a rotating force received from a rotation shaft;a cam ring that includes an inner circumferential surface facing the outer circumferential surface of the rotor, and is disposed to surround the rotor;one side member disposed on one end portion side of the cam ring in a rotational axial direction to cover an opening of the cam ring; andanother side member disposed on the other end portion side of the cam ring in the rotational axial direction to cover an opening of the cam ring,wherein multiple communication portions are formed separately from each other in a rotation direction in cam ring side end surfaces of the one side member and the other side member, and communicate with a center side space which is a space in the vane groove on a rotation center side, andwherein a position of an upstream end portion, in the rotation direction, of one communication portion of the multiple communication portions and a position of an upstream end portion, in the rotation direction, of another communication ...

Positive-displacement rotary pump having a positive-displacement auxiliary pumping system

Positive-displacement auxiliary pumping systems for use in pump apparatus of different configurations are disclosed. The positive-displacement auxiliary pumping systems are included in positive-displacement rotary pumps having a casing defining a pumping cavity, an inlet port connected to the pumping cavity, a discharge port connected to the pumping cavity, and a positive-displacement auxiliary pumping port connected to the pumping cavity. Pumping elements move within the pumping cavity of the casing and define a collapsing pocket that maintains fluid communication with the positive-displacement auxiliary pumping port after the collapsing pocket is no longer in fluid communication with the discharge port.

Pre-pressurization pump liner for vane pump

A vane liner for use in a vane pump has a vane liner body defining an inner bore for providing a cam surface in a vane pump. The cam surface has a suction opening formed through the body at one circumferential extent, and a discharge opening through the body at a distinct circumferential extent. A pre-pressurization opening extends through the body at a location upstream of an upstream end of the discharge opening, but spaced by at least 90 degrees from a downstream end of the suction opening. A vane pump incorporating the above-discussed liner is also claimed. Further, a vane pump is also disclosed and claimed having the spacing from the downstream end of the suction opening at least X degrees wherein X equals 360 divided by N, N being the number of vanes in the vane pump.

Exhaust heat regeneration system

An exhaust heat regeneration system includes: an evaporator for cooling engine cooling water; an expansion device for expanding the refrigerant heated through the evaporator so as to generate a driving force; a condenser for cooling the refrigerant passing through the expansion device to condense the refrigerant; and a pump for pressure-feeding the refrigerant cooled through the condenser to the evaporator, in which: the expansion device is coupled to the pump by a shaft, and the expansion device and the pump are housed within the same casing to constitute a pump-integrated type expansion device; and the pump includes a high-pressure chamber through which the refrigerant to be discharged to the evaporator flows, the high-pressure chamber being provided on the expansion device side, or a low-pressure chamber through which the refrigerant flowing from the condenser flows, the low-pressure chamber being provided on the expansion device side.

Intake charged pump for delivering a liquid

An intake charged pump for pumping liquid and which has an intake duct that extends to the suction area of the pump. The pump has a duct through which a jet stream flows to the suction area. A nozzle arrangement in the intake duct accelerates the liquid which is returned via the jet stream and supports the suction of a suction stream of the liquid from a storage container. A nozzle of the nozzle arrangement leads into the mixing chamber at an acute angle in a such way that the jet stream, leaving the nozzle, creates a common mixing stream with the suction stream from the storage container, and through which partial streams having essentially the same pressure and energy content, can be delivered to the front and back suction pockets of the double chamber pump.

DISTRIBUTOR ASSEMBLY FOR TWO-SPEED GEROTOR DEVICE

A distributor assembly () includes a distributor housing () and a valve selector plate (). The distributor housing () includes an axial bore () extending in an axial direction through the distributor housing. The valve selector plate () is disposed in the axial bore () and is rotatable around a rotational axis () parallel to the axial direction between a first orientation and a second orientation. The valve selector plate () includes a first substantially planar face (), a second substantially planar face (), axial passages () radially offset from the rotational axis () and extending through the valve selector plate () from the first face () to the second face (), and at least one fluid blocking section () configured to block axial flow through the distributor assembly. Each fluid blocking section () is interposed between and radially aligned with the axial passages () with respect to the rotational axis (). A two-speed gerotor motor is also disclosed. 1. A distributor assembly for a two-speed gerotor device comprising:a distributor housing including an axial bore extending in an axial direction through the distributor housing; anda valve selector plate disposed in the axial bore and being rotatable about a rotational axis parallel to the axial direction between a first orientation and a second orientation, the valve selector plate including a first substantially planar face, a second substantially planar face, axial passages radially offset from the rotational axis and extending through the valve selector plate from the first face to the second face, and at least one fluid blocking section configured to block axial flow through the distributor assembly and interposed between and radially aligned with the axial passages with respect to the rotational axis.2. The assembly of claim 1 , wherein the valve selector plate is circular in a cross section taken normal to the axial direction and includes an inner annular section defining an inner edge of the axial passages ...

Vehicular power transmitting system

A vehicular power transmitting system including an oil pump constructed to sufficiently reduce a required drive torque. A high-pressure-port discharge amount of first and second high-pressure passages of the oil pump is determined such that an amount of consumption of working oil of relatively high pressure can be afforded only by the high-pressure-port discharge amount, during steady-state running of a vehicle in which engine speed is not lower than a predetermined threshold value corresponding to a predetermined lowest target input shaft speed of a continuously variable transmission for its shifting control. The pressure of the working oil discharged from first and second low-pressure discharge passages is kept at a predetermined low level, and the required drive torque of the oil pump is sufficiently reduced.

Delivery unit

A delivery unit is already known, which comprises a drive shaft and a rotor driven by the drive shaft. The rotor is rotatably arranged in a stator housing, wherein the rotor has a toothing on the end face of said rotor that is remote from the drive shaft, wherein said toothing meshes with a toothing constructed on the stator housing. The drive shaft comprises an oblique sliding plane interacting with the rotor and which is constructed on a shoulder of the drive shaft and allows the rotor to gyrate with the rotor axis thereof about the drive axis of the drive shaft. Work spaces are formed between the toothing of the rotor and the toothing of the stator housing, wherein said work spaces can be filled via an inlet and emptied via an outlet. In one embodiment the fluid is admitted axially and discharged radially, and in the other embodiment the fluid is admitted and discharged axially. For that purpose, control valves in the form of non-return valves are required. The non-return valves cause additional internal leakages, resulting in a reduction in the volumetric efficiency of the pump. The valves are additional parts, which are associated with additional costs and an increased risk of failure. In the delivery unit according to the invention the control valves can be dispensed with. According to the invention the inlet ( 15 ) is provided in a channel ( 20 ) of the drive shaft ( 2 ) and the outlet ( 16 ) is provided at the shoulder ( 6 ) of the drive shaft ( 2 ).

VALVE OF A PISTON PUMP WITH A CLOSING BODY

A valve of a piston pump, in particular for a hydraulic vehicle brake system, includes a closing body configured to be moved in an axially guided manner against a sealing seat. The closing body is formed in two pieces, which include a damping piston and a closing element inserted in the damping piston. 1. A valve of a piston pump , comprising:a sealing seat; anda closing body configured to be moved in an axially guided manner against the sealing seat,wherein the closing body is formed in two pieces, the pieces including a damping piston and a closing element inserted therein.2. The valve as claimed in claim 1 , wherein the closing element is formed with a head lying on a face of the damping piston and a shaft inserted in the damping piston.3. The valve as claimed in claim 1 , wherein a central depression is formed in the closing element on the end facing the sealing seat.4. The valve as claimed in claim 2 , wherein the closing element is retained on the damping piston by a catch.5. The valve as claimed in claim 2 , wherein the closing element is held on the damping piston with radial play created by a radial spacing of the shaft from the surrounding damping piston.6. The valve as claimed in claim 1 , wherein claim 1 , on the end of the damping piston facing towards the closing element claim 1 , at least one channel is formed through which an underflow claim 1 , directed radially from outside to inside claim 1 , of the closing element is possible.7. The valve as claimed in claim 6 , wherein the channel forms a segment of a flow connection through the damping piston to its other end.8. The valve as claimed in claim 6 , wherein a constriction is formed in the channel claim 6 , which forms a choke.9. The valve as claimed in claim 8 , wherein the channel is formed by a radially oriented groove formed in the damping piston claim 8 , an opening cross section of which groove is reduced in the axial direction at one point.10. A piston pump of a vehicle brake system claim 8 , ...

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.

ELECTRO HYDROSTATIC ACTUATORS

An electro hydrostatic actuator comprises a hydraulic pump driven by an electric motor to supply hydraulic fluid to a hydraulic actuator. The pump comprises an inlet and an outlet for the hydraulic fluid and an active flow path arranged therebetween such that, in an active mode of operation when the pump is driven by the electric motor, hydraulic fluid is actively drawn in through the inlet and exhausted out through the outlet. The pump further comprises a bypass flow path arranged to open between the inlet and outlet such that, in a damping mode of operation when the pump is not driven by the electric motor, hydraulic fluid is able to pass through the pump along the bypass flow path between the inlet and outlet. 1. An electro hydrostatic actuator comprising:an electric motor; and an inlet and an outlet for the hydraulic fluid and an active flow path arranged therebetween such that, in an active mode of operation when the pump is driven by the electric motor, hydraulic fluid is actively drawn in through the inlet and exhausted out through the outlet; and', 'a bypass flow path arranged to open between the inlet and outlet such that, in a damping mode of operation when the pump is not driven by the electric motor, hydraulic fluid is able to pass through the pump along the bypass flow path between the inlet and outlet., 'a hydraulic pump driven by the electric motor, the pump configured to supply hydraulic fluid to a hydraulic actuator, the pump comprising2. An electro hydrostatic actuator according to claim 1 , wherein the bypass flow path is arranged to automatically open when the pump is not driven by the electric motor.3. An electro hydrostatic actuator according to claim 2 , wherein the pump further comprises a resilient member arranged to automatically open the bypass flow path when the pump is not driven by the electric motor.4. An electro hydrostatic actuator according to claim 1 , wherein the size of the bypass flow path is adjusted during manufacture and/or ...

VANE PUMP

A vane pump includes: a rotor; vanes; a cam ring; pump chambers; a suction port; a discharge port; back-pressure chambers; a discharge-side back pressure port configured to guide working fluid that is discharged from the discharge port to the back-pressure chambers; and suction-side back pressure ports configured to guide the working fluid to the back-pressure chambers. The suction-side back pressure ports are formed to be divided into a low-pressure port and a high-pressure port, the low-pressure port being configured to guide the working fluid in the suction port to the back-pressure chambers, and the high-pressure port being configured to guide the working fluid that is discharged from the discharge port to the back-pressure chambers. The high-pressure port is arranged at the forward-side of the low-pressure port in rotating direction of the rotor. 1. A vane pump that is used as a fluid pressure source , comprising:a rotor configured to be rotationally driven;a plurality of slits formed in a radiating pattern so as to open to an outer circumference of the rotor;vanes slidably received in the respective slits;a cam ring that has an inner circumferential cam face with which tip portions of the vanes slidingly contact, the tip portions being end portions of the vanes in direction projecting from the slits;pump chambers defined by the rotor, the cam ring, and the adjacent vanes;a suction port configured to guide working fluid that is to be sucked to the pump chambers;a discharge port configured to guide the working fluid that is discharged from the pump chambers;back-pressure chambers formed in the slits, the back-pressure chambers being partitioned by base-end portions of the vanes, the base-end portions being end portions at the opposite side from the tip portions;a discharge-side back pressure port configured to guide the working fluid that is discharged from the discharge port to the back-pressure chambers in a discharge section in which the pump chambers are in ...

INTERNAL GEAR PUMP

An internal gear pump includes a pinion, a ring arranged around the pinion, and a cylindrical wall arranged around the ring. A support element, on which the pinion and the ring are supported, carries high-pressure liquid towards a recess located at the junction between the ring and the cylindrical wall, and also carries low-pressure liquid towards another recess located at another point of the junction between the ring and the cylindrical wall. The recess allows the load of the ring on the cylindrical wall to be reduced. 1. An internal gear pump comprising:a pinion capable of rotating about a first axis of rotation;a ring arranged around the pinion, having a cylindrical periphery and being configured to rotate about a second axis of rotation that is different to the first axis of rotation and parallel thereto, the pinion and the ring being arranged to delimit a work space comprising a high-pressure space and a low-pressure space;a first support element arranged on a first side of the ring to limit the movement thereof in a first sense along a first orientation that is substantially parallel to the first and second axes of rotation;a second support element arranged on a second side of the ring to limit the movement thereof in a second sense that is opposite the first sense and in the first orientation;a cylindrical wall arranged around the ring to limit the movement thereof in a plane that is substantially perpendicular to the second axis of rotation;a first high-pressure recess in an arc of a circle and in fluid contact with a first portion of the cylindrical periphery of the ring;a first low-pressure recess in an arc of a circle and in fluid contact with a second portion of the cylindrical periphery of the ring, the first high-pressure recess and the first low-pressure recess being separated;a first high-pressure conveying means forming a fluid connection between the high-pressure space and the first high-pressure recess; anda first low-pressure conveying means ...

VANE CELL PUMP WITH A SUB-VANE REGION TO WHICH PRESSURE CAN BE APPLIED

A vane cell pump, includes a rotatable rotor having vanes which can be moved back and forth; an end plate with a pressure passage for discharging pressure fluid and a supply passage for supplying a sub-vane region with pressure fluid; a flow channelling device on an end face of the end plate facing axially away from the rotor; a first outlet region for discharging a first partial flow of the pressure fluid; a second outlet region for discharging a second partial flow of the pressure fluid; a first flow path along which the first partial flow flows through the first outlet region; a second flow path connecting the pressure passage to the supply passage, diverges from the first flow path and is delineated by the flow channelling device; and a third flow path connecting the supply passage to the second outlet region and delineated by the flow channelling device. 1. A vane cell pump , comprising:a rotor which can be rotated about a rotational axis, and one or more vanes which can each be moved back and forth in a respective vane receptacle of the rotor;a cam structure which surrounds the rotor and, when the rotor is rotationally moved, guides the vane(s) such that delivery cells which periodically increase and decrease in size are formed;an end plate axially facing the rotor and comprising a pressure passage for discharging pressure fluid and a supply passage for supplying a sub-vane region with pressure fluid;a flow channelling device on an end face of the end plate facing axially away from the rotor;a first outlet region for discharging a first partial flow of the pressure fluid flowing through the pressure passage;a second outlet region for discharging a second partial flow of the pressure fluid flowing through the pressure passage;a first flow path along which the first partial flow flows through the first outlet region;a second flow path which connects the pressure passage to the supply passage, diverges from the first flow path and is delineated by the flow ...

OIL PUMP

An oil pump includes a motor including a shaft disposed along a central axis extending in an axial direction, a rotor rotatable around the shaft, a stator disposed to face the rotor, a housing that accommodates the rotor and the stator, a pump including a pump rotor rotatable together with the shaft to suction and discharge oil, and a pump housing including an accommodation portion that accommodates the pump rotor. The pump housing includes an intake port through which the oil is suctioned, a discharge port through which the oil is discharged, and a pressure sensor disposed between the discharge port and the accommodation portion. 110-. (canceled)11. An oil pump comprising:a motor including a shaft disposed along a central axis extending in an axial direction, a rotor rotatable around the shaft, a stator disposed to face the rotor, and a housing that accommodates the rotor and the stator; anda pump including a pump rotor rotatable with the shaft to suction and discharge oil, and a pump housing including an accommodation portion that accommodates the pump rotor; whereinthe pump housing includes an intake port through which the oil is suctioned, a discharge port through which the oil is discharged, and a pressure sensor which is disposed between the discharge port and the accommodation portion.12. The oil pump according to claim 11 , whereinthe discharge port includes a first discharge port and a second discharge port; andthe pressure sensor is disposed between any one of the first discharge port and the second discharge port and the accommodation portion.13. The oil pump according to claim 12 , whereinin a state that the discharge port is fully opened, the second discharge port has a flow rate of the oil larger than a flow rate of the oil in the first discharge port; andthe pressure sensor is disposed between the accommodation portion and the second discharge port.14. The oil pump according to claim 12 , whereinthe pump includes a solenoid valve to adjust the flow ...

OIL PUMP

An oil pump includes a motor including a shaft disposed along a center axis, a rotor rotating around the shaft, a stator disposed to face the rotor, a housing accommodating the rotor and the stator, and a pump. The pump includes a pump rotor rotating together with the shaft, and a pump housing including an accommodating portion that accommodates the pump rotor. The pump housing includes a suction port that suctions in oil, a discharge port that discharges oil, and a pressure sensor that detects hydraulic pressure of oil in a partial flow passage allowing communication between the discharge port and the accommodating portion. The pressure sensor is disposed outside the housing of the motor, and the housing includes a wall that blocks electromagnetic waves. 113-. (canceled)14. An oil pump , comprising:a motor including a shaft disposed along a center axis extending in an axial direction, a rotor rotating around the shaft, a stator disposed to face the rotor, and a housing accommodating the rotor and the stator; anda pump including a pump rotor rotating together with the shaft to suction and discharge oil, and a pump housing including an accommodating portion that accommodates the pump rotor; whereinthe pump housing includes a suction port that suctions in oil, a discharge port that discharges oil, and a pressure sensor that detects hydraulic pressure of oil in a flow passage allowing communication between the discharge port and the accommodating portion;the pressure sensor is disposed outside the housing of the motor; andthe housing includes a wall that blocks electromagnetic waves.15. The oil pump according to claim 14 , whereinthe pump is disposed on one side of the motor in an axial direction thereof; andthe pump housing includes a pump body including the accommodating portion that accommodates the pump rotor and further includes a side surface and a bottom surface positioned on another side of the motor in the axial direction, and a pump cover closing an opening ...

CARTRIDGE VANE PUMP AND PUMP DEVICE INCLUDING SAME

A cartridge vane pump includes: a side plate brought into contact with first end surfaces of the rotor and the cam ring; a cover brought into contact with second end surfaces of the rotor and the cam ring, the cover attached to the body; and an O-ring provided in an outer circumference of the side plate, the O-ring being configured to seal a gap between the outer circumference of the side plate and an inner circumference of the body. The side plate has: a first flange portion configured to restrict movement of the O-ring towards the rotor side; a second flange portion configured to restrict movement of the O-ring towards an opposite side from the rotor. The first flange portion is formed to be able to compress the O-ring with the body in an axial direction of the driving shaft. 1. A cartridge vane pump configured to be accommodated in a body in an attachable and detachable manner , the cartridge vane pump comprising:a rotor linked to a driving shaft, the rotor being configured to be rotationally driven;a plurality of vanes provided in the rotor so as to be able to reciprocate in a radial direction of the rotor;a cam ring having an inner circumference cam face with which the plurality of vanes are brought into sliding contact;a side member brought into contact with first end surfaces of the rotor and the cam ring;a cover member brought into contact with second end surfaces of the rotor and the cam ring, the cover member being configured to be attached to the body; anda sealing member provided in an outer circumference of the side member, the sealing member being configured to seal a gap between the outer circumference of the side member and an inner circumference of the body, wherein a first restricting portion configured to restrict movement of the sealing member towards the rotor side;', 'a second restricting portion configured to restrict movement of the sealing member towards an opposite side from the rotor; and', 'an accommodating space defined by the first ...

ELECTRIC PUMP SYSTEM AND METHOD

An electric pump system and method of operating the same involves pumping a fluid through a fluid passageway defined in a mechanical pump from a pump inlet to a hollow shaft of a motor, through the hollow shaft to an internal motor cavity defined by a housing of the motor, and through another fluid passageway defined in the motor housing and mechanical pump that leads to a pump outlet. The system and method further involve pumping the fluid through another fluid passageway defined in the mechanical pump from yet another pump inlet to the pump outlet. The temperature of fluid exiting the hollow shaft can be assessed and used by an electronic control unit (ECU) of the electric pump system to control the same. The electric pump system can be part of a cooling and lubrication system for an electric vehicle transmission, gearbox, differential or transfer case, for example. 1. An apparatus comprising: a stator;', 'a rotor comprising a shaft; and', 'a housing around the stator and rotor and defining an internal motor cavity and a bypass inlet in fluid communication with the internal motor cavity;, 'a motor having a first side and a second side, the motor includingan electronic control unit connected to the first side of the motor;a mechanical pump connected to the second side of the motor and defining a first fluid passageway from a first pump inlet to a pump outlet; andwherein the motor housing and mechanical pump further defining a second fluid passageway from the internal motor cavity to the pump outlet via a second pump inlet.2. The apparatus of claim 1 , wherein the electronic control unit further comprises a thermistor.3. The apparatus of claim 1 , wherein the shaft is a hollow shaft that defines a shaft inlet and a shaft outlet claim 1 , wherein the mechanical pump defines a third fluid passageway from a third pump inlet to the shaft inlet claim 1 , and wherein the shaft outlet is in fluid communication with the internal motor cavity.4. The apparatus of claim 3 , ...

OIL PUMP

An oil pump of the present invention includes a housing () which includes an inlet port () to suck oil, a discharge port () to discharge oil, and a purge port () to eject air-mixed oil, an inner rotor () which is arranged in the housing as being rotatable about a predetermined axis line (S), an outer rotor () which is arranged in the housing to be rotated as being interlocked with the inner rotor, and a filter member () which is arranged at the housing from the outside thereof to prevent foreign matter from entering through the purge port. According to the above, entering of foreign matter and the like can be prevented even when oil is sucked through the purge port. 1. An oil pump , comprising:a housing which includes an inlet port to suck oil, a discharge port to discharge oil, and a purge port to eject air-mixed oil with air mixed;an inner rotor which is arranged in the housing as being rotatable about a predetermined axis line;an outer rotor which is arranged in the housing to be rotated as being interlocked with the inner rotor; anda filter member which is arranged at the housing from the outside thereof to prevent foreign matter from entering through the purge port.2. The oil pump according to claim 1 ,wherein the purge port is arranged at a range capable of providing communication, concurrently with the inlet port, with a pump chamber defined by the inner rotor and the outer rotor.3. The oil pump according to claim 1 ,wherein the housing includes a housing body including a concave portion for containing the inner rotor and the outer rotor, and a housing cover which is connected to the housing body to close an opening of the housing body,the purge port is formed at the housing cover, andthe filter member is attached to the housing cover from the outside.4. The oil pump according to claim 1 ,wherein the inner rotor and the outer rotor include an upstream rotor including a first inner rotor and a first outer rotor and a downstream rotor including a second inner ...

Hydraulic Pump

A hydraulic pump is described comprising a rotor provided for rotation about a longitudinal axis (X-X) within a housing. The pump comprises a plurality of chambers for pumping a fluid that are provided by longitudinally extending recesses in a circumferential outer surface of the rotor. During use the recesses are moved across a circumferential inner surface of the housing, and in so doing, are moved over an inlet port in the housing to draw fluid into the chamber and then over an outlet port in the housing to discharge the fluid. The hydraulic pump further comprises a roller that is mounted in a longitudinally extending pocket of the housing. The roller is positioned after the outlet port in a direction of the rotor's rotation and is arranged to follow the outer surface of the rotor and seal against each recess as it is drawn past the roller, thereby directing fluid from the chamber into the outlet port. 1. A hydraulic pump comprising a rotor provided for rotation about a longitudinal axis within a housing , the pump comprising:a plurality of chambers for pumping a fluid, the chambers being provided by longitudinally extending recesses in a circumferential outer surface of the rotor, the recesses being moved across a circumferential inner surface of the housing during rotation of the rotor, and in so doing, being moved over an inlet port in the housing to draw fluid into the chamber and then over an outlet port in the housing to discharge the fluid, whereinthe hydraulic pump further comprises a roller that is mounted in a longitudinally extending pocket of the housing, the roller being positioned after the outlet port in a direction of the rotor's rotation, the roller further being arranged to follow the outer surface of the rotor and seal against each recess as it is drawn past the roller, thereby directing fluid from the chamber into the outlet port.2. The hydraulic pump according to wherein the rotor comprises:a plurality of magnets which are able to generate a ...

VALVE TIMING CONTROL APPARATUS

A valve timing control apparatus includes a check valve, a filter, and a filter holding body. The check valve is placed between a camshaft and a vane rotor. The filter is placed between the camshaft and the check valve. The filter holding body includes a plurality of metal plates, which are stacked one after another. Two metal plates, which serve as enlarged space forming plates, are placed adjacent to the filter on one side of the filter where the camshaft is placed while each of the two metal plates includes enlarged through holes. A metal plate, which serves as an enlarged space forming plate, is placed adjacent to the filter on another side of the filter and includes enlarged through holes. A flow passage cross-sectional area of each enlarged through hole is larger than a flow passage cross-sectional area of a supply oil passage. 1. A valve timing control apparatus that is placed in a drive force transmission path , which transmits a drive force from a drive shaft of an internal combustion engine to a driven shaft , to adjust valve timing of a valve that is opened and closed by the driven shaft , wherein one of the drive shaft and the driven shaft serves as a first shaft while another one of the drive shaft and the driven shaft serves as a second shaft , and an oil passage , which opens in an end surface of the second shaft , serves as an external oil passage , the valve timing control apparatus comprising:a housing that is rotatable together with the first shaft; an advancing oil passage, which is communicated with the advancing chamber;', 'a retarding oil passage, which is communicated with the retarding chamber; and', 'a supply oil passage, which opens on a side where the second shaft is placed, wherein the supply oil passage is communicatable with the external oil passage;, 'a vane rotor that is placed along an extension of an axis of the second shaft and is rotatable together with the second shaft, wherein the vane rotor forms a vane, which partitions an ...

PUMP WITH A RESILIENT SEAL

A pump comprises a housing, with an interior defining a rotor path, an inlet formed in the housing at a first position on said rotor path, an outlet formed in the housing at a second position on said rotor path spaced from said first position. A rotor is rotatable in the housing with a first surface that seals against the housing. A second surface is formed on said rotor circumferentially spaced from said first surface and forms a chamber that travels around said rotor path to convey fluid from the inlet to the outlet. A resilient seal formed with the housing is located on the rotor path to prevent fluid flow from said outlet to said inlet past the seal. A passage may be provided to supply fluid to an under surface of the seal at a pressure that acts to urge the seal against the rotor. 1. A pump comprising:a housing, the housing having an interior defining a rotor path;an inlet formed in the housing at a first position on said rotor path;an outlet formed in the housing at a second position on said rotor path spaced from said first position; at least one first surface formed on the rotor and sealing against said rotor path of the housing,', 'at least one second surface formed on said rotor circumferentially spaced from said at least one first surface and forming a chamber with the rotor path that travels around said rotor path on rotation of the rotor to convey fluid around the housing from the inlet to the outlet; and, 'a rotor rotatable in said housing,'} formed in one piece with the housing,', 'the seal and the housing comprising the same material,', 'the seal located on said rotor path and extending between the outlet and the inlet in the direction of rotation of said rotor, 'a resilient seal'}wherein the at least one first surface seals with, and resiliently deforms, the seal, as the rotor rotates around the rotor path within the housing to prevent fluid flow from said outlet to said inlet past the seal.2. A pump according to claim 1 , wherein the housing and ...

FUEL PUMP AND MANUFACTURING METHOD THEREOF

A suction side end part of a suction guide passage and a discharge side end part of a discharge guide passage are opposed to each other with a gap therebetween. At a deviation angle at which contraction of a pump chamber starts, an outer peripheral part of the discharge side end part is formed along an inner tooth, and an inner peripheral part of the discharge side end part is formed along an outer tooth. A working tool that rotates and cuts circularly is moved around on a pump housing in a single continuous line to form an outline of the discharge guide passage, thereby forming the discharge guide passage. The working tool is moved around on the pump housing in a single continuous line to form an outline of the suction guide passage, thereby forming the suction guide passage. 1. A fuel pump comprising:an outer gear that includes a plurality of inner teeth;an inner gear that includes a plurality of outer teeth and is eccentric from the outer gear in an eccentric direction to be engaged with the outer gear; anda pump housing that rotatably accommodates the outer gear and the inner gear, wherein:the outer gear and the inner gear expand and contract volume of a plurality of pump chambers formed between both the gears, and rotate to sequentially suction fuel into the plurality of pump chambers and discharge fuel from the plurality of pump chambers; a sliding surface on which the outer gear and the inner gear slide;', 'a suction guide passage that suctions fuel into the plurality of pump chambers as a guide passage that is recessed from the sliding surface and extends in a circumferential direction of the pump housing; and', 'a discharge guide passage that discharges fuel from the plurality of pump chambers as the guide passage that is recessed from the sliding surface and extends in the circumferential direction;, 'the pump housing includesa suction side end part of the suction guide passage and a discharge side end part of the discharge guide passage are opposed to ...

PUMP WITH ROTOR HAVING ARCUATE SLOTS AND VANES

A pump includes a shaft to rotate about a longitudinal axis, a rotor, at least two arcuate slots extending continuously into and through the rotor, wherein each of the slots is curved along a longitudinal slot axis, and at least two arcuate vanes, each of the vanes being shaped to be slidably seated in one of the slots, each of the vanes being movable in the corresponding slot between an extended position with the external edge of the vane adjacent the interior sidewall of the housing, and a retracted position wherein the external edge of the vane does not extend beyond the cylindrical surface of the rotor. Each of the vanes is spaced from an adjacent vane about the rotor such that there is always at least one vane positioned between the fluid inlet and fluid outlet ports. 1. A rotary pump comprising:a shaft to rotate about a longitudinal axis;a rotor centrally secured to the shaft, the rotor having a body with spaced ends and a cylindrical surface extending between the spaced ends;a rotor disk secured to each end of the rotor and secured at a centre of the rotor disk to the shaft;a housing encasing the shaft, the rotor disks, and the rotor within an internal cavity, the housing having interior end walls and an interior sidewall, with fluid inlet and fluid outlet ports in the interior sidewall, a first section of the interior sidewall of the housing being cylindrical and curved with a constant radius over an angle of about approximately 180°, the first section being spaced a constant distance from confronting sections of the cylindrical surface of the rotor, and a second section of the interior sidewall of the housing extending between the extremities of the first section of the interior sidewall, the cylindrical surface of the rotor being proximal to the interior sidewall of the housing between the fluid inlet and fluid outlet ports about midway along the second section, the fluid inlet and fluid outlet ports being located in the second section of the interior ...

AUTOMOTIVE ELECTRICAL OIL PUMP

An automotive electrical oil pump includes an oil displacement pumping unit with a pump rotor which rotates in a pump chamber so as to pump a pressurized oil to an oil recipient, an electric driving motor which drives the pump rotor of the oil displacement pumping unit, an electrical connector plug which electrically connects the electric driving motor to a power source, and a fluid connector. The fluid connector includes a pump inlet which is fluidically connected to a chamber inlet, a pump outlet which is fluidically connected to a chamber outlet, a center front opening, and a ring front opening which is arranged coaxially to the center front opening. The center front opening and the ring front opening define the pump inlet and the pump outlet. 112-. (canceled)13. An automotive electrical oil pump comprising:an oil displacement pumping unit comprising a pump rotor which is configured to rotate in a pump chamber so as to pump a pressurized oil to an oil recipient;an electric driving motor configured to drive the pump rotor of the oil displacement pumping unit;an electrical connector plug configured to electrically connect the electric driving motor to a power source; and a pump inlet which is fluidically connected to a chamber inlet,', 'a pump outlet which is fluidically connected to a chamber outlet,', 'a center front opening, and', 'a ring front opening which is arranged coaxially to the center front opening,', 'wherein,', 'the center front opening and the ring front opening define the pump inlet and the pump outlet., 'a fluid connector comprising,'}14. The automotive electrical oil pump as recited in claim 13 , wherein claim 13 ,the fluid connector further comprises a first circular opening wall arranged coaxially to the center front opening, andthe first circular opening wall is configured to fluidically separate the center front opening and the ring front opening.15. The automotive electrical oil pump as recited in claim 13 , wherein claim 13 ,the fluid ...

Portable Fuel Pump

An illustrative embodiment of the present disclosure includes a pump having a rotor and a plurality of vanes. The rotor is attached to a motor that rotates it in first and second directions and is located in a cavity. The plurality of vanes are each pivotally coupled to the rotor so as the rotor rotates, the vanes selectively push fluid from an inlet port out through an outlet port. The plurality of vanes each have an end selected from the group consisting of a lobe, no lobe, and a rod located in the lobe. Each of the plurality of vanes also includes a pivot pin configured to fit in a corresponding receptacle located in the rotor so that each of the plurality of vanes is pivotable with respect to the rotor inside the cavity.

ELECTRIC OIL PUMP

An electric oil pump includes a motor including a motor shaft, a pump assembly including a vane pump driven by the motor to suction and discharge oil, and an inverter to drive the motor. The motor includes a rotor, a stator on a side outward from the rotor in a radial direction, and a motor housing containing the rotor and the stator. The motor housing includes a suction port through which the vane pump suctions oil from outside, and a discharge port through which the vane pump discharges oil to outside. The motor housing includes flat surface portions in a portion of an outer periphery thereof. The suction port and the discharge port are located in a first surface of side surfaces which are the flat surface portions of the motor housing and are parallel or substantially parallel to the axial direction. 112-. (canceled)13. An electric oil pump comprising:a motor including a motor shaft extending along a central axis extending in an axial direction;a pump assembly including a vane pump which is on one side of the motor in the axial direction and is driven by the motor via the motor shaft to suction and discharge oil; andan inverter which is on another side of the motor in the axial direction to drive the motor; wherein a rotor which is rotatable together with the motor shaft;', 'a stator which is on a side outward from the rotor in a radial direction; and', 'a motor housing which houses the rotor and the stator;, 'the motor includes a suction port through which the vane pump suctions oil from outside; and', 'a discharge port through which the vane pump discharges oil to outside;, 'the motor housing includesthe motor housing includes flat surface portions in a portion of an outer peripheral shape thereof; andthe suction port and the discharge port are provided in a first surface of side surfaces which are the flat surface portions of the motor housing and are parallel or substantially parallel to the axial direction.14. The electric oil pump according to claim 13 , ...

Mounting structure for electric oil pump

A mounting structure for electric oil pump is provided to allow the electric oil pump to be mounted without through a communication pipe. The electric oil pump includes a pump unit having an inscribed gear pump, and a motor unit disposed adjacent to the pump unit and having a sensorless brushless DC motor for rotating the inscribed gear pump. A transmission accommodates the electric oil pump and includes a transmission case having an oil pan. The electric oil pump is attached to the transmission case with at least a through hole for supplying working oil to the pump unit being submerged in the working oil reserved in the oil pan.

Pump For Conveying A Liquid, In Particular An Exhaust-Gas Cleaning Additive

A pump for conveying liquid includes a pump housing having an inlet, an outlet, an inner circumferential surface and a geometric axis. An eccentric in the housing is rotatable about the geometric axis relative to the housing. A deformable element is disposed between the inner circumferential housing surface and the eccentric. A delivery duct from the inlet to the outlet is formed by the deformable element and the inner circumferential housing surface. The deformable element is pressed against the housing by the eccentric in sections so that a displaceable seal of the duct and a closed pump volume in the duct are formed and are displaceable to convey the liquid along the duct from the inlet to the outlet by rotation of the eccentric. A receptacle, accommodating an edge region of the deformable element, is formed by the inner circumferential housing surface and a counter bracket. 110-. (canceled)11. A pump for delivering a liquid , the pump comprising:at least one pump housing having at least one inlet, at least one outlet, an inner circumferential surface and a geometric axis;an eccentric disposed within said at least one pump housing and rotatable relative to said at least one pump housing about said geometric axis;a deformable element disposed between said inner circumferential surface of said at least one pump housing and said eccentric, said deformable element having at least one edge region;a delivery duct formed from said at least one inlet to said at least one outlet by said deformable element and said inner circumferential surface of said at least one pump housing;said eccentric pressing said deformable element in sections against said at least one pump housing to form at least one displaceable seal of said delivery duct and at least one closed pump volume in said delivery duct;said at least one displaceable seal and said at least one closed pump volume being displaceable along said delivery duct from said at least one inlet to said at least one outlet by a ...

VARIABLE DISPLACEMENT VANE PUMP

A variable displacement vane pump includes a rotor, vanes, a cam ring, pump chambers, a suction port, a discharge port, back pressure chambers, a plate that has a sliding contact surface and a penetrating hole, a suction-side back pressure port being configured to guide the working fluid in the suction port to the back pressure chambers in a suction section, a discharge-side back pressure port being configured to guide the working fluid that is discharged from the discharge port to the back pressure chambers in a discharge section, an additional groove provided on the sliding contact surface so as to extend from between the discharge-side back pressure port and the penetrating hole to between the suction-side back pressure port and the penetrating hole, and a connection groove that communicates the additional groove with the suction-side back pressure port.

Diverter Valve For Progressing Cavity Pump

A diverter valve housing is secured to an upper end of a pump. A shuttle in the diverter valve housing moves between an upper closed position and a lower open position. A floating ring has an exterior band that abuts an upper end of the shuttle to move the shuttle downward. The floating ring moves upward when the pump operates. A bushing abuts an upward facing shoulder in the floating ring and is adhered within the bushing by a layer of adhesive. The shuttle has upper and lower seals separated by upper and lower spacer rings. A stop ring between the spacer rings limits downward movement of the upper spacer ring and also limits upward movement of the lower spacer ring. 1. A well pumping apparatus , comprising:a pump having a rotatable drive member;a diverter valve housing secured to an upper end of the pump, the diverter valve housing having a sidewall containing at least one outlet port;a shuttle reciprocally carried in the diverter valve housing, the shuttle having an upper closed position blocking flow through the outlet port and a lower open position allowing flow through the outlet port;a spring in the diverter valve housing that urges the shuttle to the upper position;a flow tube secured to and extending upward from the diverter valve housing, the flow tube having a longitudinal axis and an upper end adapted to be secured to a string of production tubing;a connector rod secured to and extending upward from the drive member through the spring and the shuttle, the connector rod having an upper end with a rod coupling for connecting to a string of drive rods to rotate the drive member;a floating ring having a bore that receives the connector rod, the floating ring having an exterior band that abuts an upper end of the shuttle to move the shuttle downward toward the open position while the pump is shut off, the floating ring being upwardly movable in the flow tube relative to the shuttle in response to well fluid flowing upward from the pump while the pump is ...

AUTOMOTIVE ELECTRICAL OIL PUMP

An automotive electrical oil pump which includes an oil displacement pumping unit with a pump rotor which rotates in a pump chamber to pump oil to an oil recipient, an electric driving motor which drives the pump rotor, an electrical connector plug which connects the electric driving motor to a power source, and a fluid connector. The fluid connector includes a pump inlet fluidically connected to a chamber inlet, a pump outlet fluidically connected to a chamber outlet, a first lateral circular ring opening which define the pump inlet or the pump outlet, and a second lateral circular ring opening or a circular front opening which defines the pump outlet or the pump inlet. The second lateral circular ring opening is provided separate from the first lateral circular ring opening. The pump outlet and the pump inlet are arranged coaxially to each other. 112-. (canceled)13. An automotive electrical oil pump comprising:an oil displacement pumping unit comprising a pump rotor which is configured to rotate in a pump chamber so as to pump a pressurized oil to an oil recipient;an electric driving motor configured to drive the pump rotor of the oil displacement pumping unit;an electrical connector plug configured to electrically connect the electric driving motor to a power source; and a pump inlet which is fluidically connected to a chamber inlet,', 'a pump outlet which is fluidically connected to a chamber outlet,', 'a first lateral circular ring opening which is configured to define the pump inlet or the pump outlet, and', 'a second lateral circular ring opening or a circular front opening which is configured to define the pump outlet or the pump inlet, the second lateral circular ring opening being provided separate from the first lateral circular ring opening,', 'wherein,', 'the pump outlet and the pump inlet are arranged coaxially to each other., 'a fluid connector comprising,'}141. The automotive electrical oil pump as recited in claim , wherein , the fluid connector is ...

ROTARY COMPRESSOR

A rotary compressor includes a cylinder having a vane slot and a compression chamber, a shaft having an eccentric portion and configured to perpendicularly pass through a center of the compression chamber, a roller having a coupling groove and configured to orbit in the compression chamber by rotation of the shaft, and a vane having a vane hinge coupled to the coupling groove and a vane body being inserted into the vane slot and configured to divide the compression chamber into a discharge space and a suction space. A shape of the discharge-sided groove close to the discharge space and a shape of the suction-sided groove close to the suction space are asymmetrically formed between the vane hinge and the vane body with respect to the a central axis of the vane. 1. A rotary compressor comprising:a cylinder that includes a vane slot and that defines a compression chamber;a shaft that includes an eccentric portion and that extends through a center of the compression chamber;a roller that includes a coupling groove and that is configured to orbit in the compression chamber based on rotation of the shaft; anda vane that includes a vane hinge and a vane body, the vane hinge being configured to engage with the coupling groove and the vane body being at least partially inserted into the vane slot to divide the compression chamber into a discharge space and a suction space,wherein the vane includes a discharge-sided groove and a suction-sided groove that are disposed between the vane hinge and the vane body and that are opposite to each other with respect to a central axis of the vane, the discharge-sided groove being closer to the discharge space than the suction-sided groove, and the suction-sided groove being closer to the suction space than the discharge-sided groove,wherein a central point of the coupling groove and a central axis of the compression chamber are on a single straight line, andwherein a shape of the discharge-sided groove is asymmetrical to a shape of the ...

Pump apparatus

A pump apparatus includes a motor that rotates a shaft, and a pump that is driven by the shaft, suctions an oil, and delivers the oil to the motor. The pump apparatus includes a first flow channel to suction an oil into the pump through a suction port provided in a pump cover using a negative pressure in the pump, a second flow channel to deliver an oil to the inside of the motor through a delivery port provided in a pump body using pressurization of the pump, a third flow channel provided between a stator and a rotor, a fourth flow channel provided between the stator and a housing, and a fifth flow channel to discharge an oil inside the motor through a discharge port provided in the housing.

Screw compressor

Screw compressor with a compression chamber that is formed by a compression housing, in which a pair of meshed helical compressor rotors in the form of a screw are rotatably mounted and with a drive motor that is provided with a motor chamber formed by a motor housing, in which a motor shaft is rotatably mounted, and this motor shaft drives at least one of the aforementioned two compressor rotors, whereby the compression housing and the motor housing are connected directly together to form a compressor housing, whereby the motor chamber and the compression chamber are not sealed off from one another and whereby the rotor shafts of the compressor rotors, as well as the motor shaft, extend along axial directions that are oblique or transverse to the horizontal plane.

Pump assembly having integrated controller and motor with internal active cooling

A pump assembly and a method for cooling the same are disclosed. The pump assembly includes a pump, a controller, and a driven electric motor. The pump and the electric motor are on opposing axial sides of the controller. The assembly also has a heat conductive plate positioned between the pump and the controller that conducts heat from the controller. A transfer passage is provided for receiving pressurized fluid output from the pump and to direct the fluid along and in contact with the heat conductive plate to conduct heat therefrom into the pressurized fluid. An outlet passage communicates with the assembly outlet to discharge the pressurized fluid.

PUMP WITH BLEED MECHANISM FOR REDUCING CAVITATION

A gear pump assembly includes a drive gear having a plurality of circumferentially spaced teeth, and a driven gear likewise having a plurality of circumferentially spaced teeth positioned for intermeshing engagement between the drive and driven gears via the teeth. A bleed mechanism directs carryover fluid from a discharge side of a bearing dam to an inlet side of the bearing dam in order to supply the carryover fluid to a carryover volume disposed between mating drive gear teeth and driven gear teeth. The bleed mechanism including a passage communicating with at least one of (i) a gear face of the drive gear, (ii) a gear face of the driven gear; or (iii) a bottom of a gear tooth profile adjacent a root region between adjacent gear teeth. 1. A gear pump assembly comprising:a drive gear having a plurality of circumferentially spaced teeth;a driven gear having a plurality of circumferentially spaced teeth that mesh with the teeth of the drive gear whereby rotation of the drive gear results in rotation of the driven gear; anda bleed mechanism that directs carryover fluid from a first side of a bearing dam to a second side of the bearing dam in order to supply the carryover fluid to a carryover volume disposed between mating drive gear teeth and driven gear teeth, the bleed mechanism including a passage communicating with at least one of:(i) a gear face of the drive gear,(ii) a gear face of the driven gear; or(iii) a bottom of a gear tooth profile adjacent a root region between adjacent gear teeth.2. The gear pump assembly of wherein the passage includes at least one of a first passage portion extending through a tooth of the drive gear and/or driven gear.3. The gear pump assembly of wherein the first passage portion extends in a direction substantially parallel to opposite faces of the tooth of the drive and/or driven gear.4. The gear pump assembly of wherein the passage includes a second passage portion communicating at a first end with the first passage portion ...

CONCENTRIC VANE COMPRESSOR

A positive displacement device includes a first cylinder, a second cylinder disposed within the first cylinder, and a third cylinder disposed around the first cylinder. An interior surface of the first cylinder and an exterior surface of the second cylinder define an inner cavity. An exterior surface of the first cylinder and an interior surface of the third cylinder define an outer cavity. A partition between the interior surface of the first cylinder and the exterior surface of the second cylinder divides the inner cavity into inner regions, and another partition between the exterior surface of the first cylinder and the interior surface of the third cylinder divides the outer cavity into outer regions. The second cylinder and the third cylinder orbit with respect to the first cylinder to create alternating regions of high pressure and low pressure in the inner regions and the outer regions. 1. A positive displacement device comprising:a first cylinder having a wall with an interior surface and an exterior surface;a vane slidably extending through the wall of the first cylinder, the vane having a first tip and a second tip;a second cylinder disposed within the first cylinder, the second cylinder having an exterior surface, the interior surface of the first cylinder and the exterior surface of the second cylinder defining an inner cavity therebetween, the vane moveable with respect to the second cylinder and in sealing contact between the interior surface of the first cylinder and the exterior surface of the second cylinder to divide the inner cavity into a first inner region and a second inner region, the first tip of the vane in contact with the exterior surface of the second cylinder;a third cylinder disposed around the first cylinder, the third cylinder having an interior surface, the exterior surface of the first cylinder and the interior surface of the third cylinder defining an outer cavity therebetween, the vane moveable with respect to the third cylinder ...

ECCENTRIC MOVABLE VANE PUMP

An eccentric movable vane pump includes a cylinder body, a first rotor, second rotors, and movable vanes of which the number is greater than or equal to 2. The first rotor is eccentrically disposed with the second rotors. One end of each of the movable vanes is rotatably connected to the first rotor, and the other ends of the movable vanes are rotatably connected to the second rotors. The first rotor is disposed on a main shaft. The cylinder body is provided with a fluid inlet and a fluid outlet respectively corresponding to an expansion area and a compression area of a space between adjacent movable vanes. The pump has a simple structure, high efficiency, low cost, multiple operation conditions, high stability, and a long service life, can operate in a high-speed/ultra-high speed range without being sealed by an elastic device, and has a small radial impact in operation. 112421242124214212142111616221. An eccentric movable vane pump , comprising: a cylinder body () , a first rotor () , second rotors () , and movable vanes () , wherein the first rotor () is eccentrically disposed with the second rotors (); one end of each of the movable vanes () is rotatably connected to the first rotor (); the second rotors () correspond one-to-one to the movable vanes () , and the number of the second rotors () and the number of the movable vanes () are greater than or equal to two; the other ends of the movable vanes () are rotatably connected to the second rotors (); the first rotor () is disposed on a main shaft (); and the cylinder body () is provided with a fluid inlet () and a fluid outlet () respectively corresponding to an expansion area and a compression area of a space between adjacent movable vanes ().242020201. The eccentric movable vane pump according to claim 1 , wherein the second rotors () are respectively provided with fixed vanes () claim 1 , and a volume of a space between adjacent fixed vanes () is periodically compressed and expanded claim 1 , such that the ...

OIL PUMP

An oil pump which changes an amount of fluid transferred from an intake port to a discharge port in one rotation, by causing a rotation of a reference line linking centers of rotation of an inner rotor and an outer rotor, the oil pump including a pump housing in which a first partitioning section is formed between a trailing end section of the intake port and a leading end section of the discharge port, and a second partitioning section is formed between a trailing end section of the discharge port and a leading end section of the intake port. A width dimension of the second partitioning section is formed to be the same as or larger than a formation range of a space between teeth which is constituted by the inner rotor and the outer rotor passing the second partitioning section during a low-speed rotation. 1. An oil pump which changes an amount of fluid transferred from an intake port to a discharge port in one rotation , by causing a rotation of a reference line linking centers of rotation of an inner rotor and an outer rotor , the oil pump comprising:a pump housing in which a first partitioning section is formed between a trailing end section of the intake port and a leading end section of the discharge port, and a second partitioning section is formed between a trailing end section of the discharge port and a leading end section of the intake port,wherein the reference line passes through respective central positions of the first partitioning section and the second partitioning section in a width direction during a low-speed rotation,wherein the reference line rotates in a direction opposite to a direction of rotation of the inner rotor and the outer rotor, and passes through rear sides, in terms of the direction of rotation, of the respective central positions of the first partitioning section and the second partitioning section in the width direction during a high-speed rotation,wherein a width dimension of the second partitioning section is formed to be the ...

VARIABLE DISPLACEMENT PUMP

Variable displacement pump has first control hydraulic chamber giving force to cam ring in direction that decreases volume variation of each pump chamber by internal pressure, second control hydraulic chamber giving force to cam ring in direction that increases volume variation of each pump chamber by internal pressure, first seal surface formed on both end surfaces of cam ring, which are in sliding-contact with both opposing inside surfaces of pump body and cover member , and sealing gap between each pump chamber and first control hydraulic chamber, and second seal surface sealing gap between each pump chamber and second control hydraulic chamber at outlet section side. Radial direction width W of second seal surface is greater than that W of first seal surface. Increase in weight of the pump can be suppressed while suppressing increase in pump control pressure against intention of control. 1. A variable displacement pump comprising:a rotor that is driven and rotates;a plurality of vanes that are provided at an outer circumferential portion of the rotor so as to be able to extend and retract;a ring-shaped movable member that defines a plurality of working fluid chambers by accommodating the rotor and the plurality of vanes at an inner circumferential side of the movable member and changes a volume variation of each working fluid chamber during rotation of the rotor by moving so that an inner circumferential center of the movable member changes with respect to a rotation center of the rotor;a pump housing that houses therein the rotor, the vanes and the movable member, both axial direction end surfaces of the movable member being in sliding-contact with both opposing inside surfaces of the pump housing;an inlet section that is formed on at least one of the both inside surfaces of the pump housing and opens in an inlet-side area where a volume of each working fluid chamber is increased by the rotation of the rotor;an outlet section that is formed on at least one of ...

OIL PUMP DEVICE

An oil pump device includes a motor, a pump, a pump cover, and a solenoid. The pump cover includes a discharge port, an intake opening through which oil is suctioned, a first discharge opening and a second discharge opening through which oil is discharged, a first oil passage that is a flow path between the first discharge opening and the discharge port, and a second oil passage that is a flow path between the second discharge opening and the discharge port. A solenoid valve of a solenoid is located on the second oil passage. 113-. (canceled)14: An oil pump device , comprising: a shaft that is disposed along a central axis;', 'a rotor that rotates around the shaft;', 'a stator that is disposed to face the rotor; and', 'a housing that accommodates the rotor and the stator; and, 'a motor including a pump rotor that rotates along with the shaft and sucks and discharges oil; and', 'a pump housing that includes an accommodation portion that accommodates the pump rotor; wherein, 'a pump including an intake opening through which the oil is suctioned;', 'a discharge opening through which the oil is discharged; and', 'a solenoid valve between the discharge opening and the accommodation portion., 'the pump housing includes15: The oil pump device according to claim 14 , wherein the solenoid valve opens and closes a flow path between the discharge opening and the accommodation portion.16: The oil pump device according to claim 14 , whereinthe discharge opening includes a first discharge opening and a second discharge opening; andthe solenoid valve is between either of the first discharge opening or the second discharge opening and the accommodation portion.17: The oil pump device according to claim 16 , wherein the solenoid valve is between the accommodation portion and the second discharge opening.18: The oil pump device according to claim 14 , wherein the pump housing includes:a pump body that accommodates the pump rotor and includes a recess including a side wall surface and ...

OIL PUMP

An oil pump includes a rotation shaft, a pump unit including an inner rotor and an outer rotor, and a casing provided with a pump chamber accommodating the pump unit, wherein at least one of a first suction passage, a first ejection passage, a second suction passage, and a second ejection passage of the casing includes a check valve provided in the oil carrying passage and the check valve includes a ball and a seating portion allowing the ball to be seated thereon and does not use a spring. 1. An oil pump comprising:a casing which is provided with a pump chamber;a rotation shaft which is rotatably supported by the casing; anda pump unit which is accommodated inside the pump chamber and is configured to send out oil inside the pump chamber in accordance with the rotation of the rotation shaft,wherein the casing includes a first suction port which communicates with the pump chamber, a first suction passage which communicates with the first suction port, a first ejection port which communicates with the pump chamber, a first ejection passage which communicates with the first ejection port, a second, suction port which communicates with the pump chamber, a second suction passage which communicates with the second suction port, a second ejection port which communicates with the pump chamber, and a second ejection passage which communicates with the second ejection port,wherein, w hen the pump unit rotates in one direction, the first suction port is configured to suck the oil from the first suction passage to the pump chamber and the first ejection port ejects the oil to the first ejection passage,wherein, when the pump unit rotates in the other direction, the second suction port is configured to suck the oil from the second suction passage to the pump chamber and the second ejection port ejects the oil to the second ejection passage, andwherein at least one of the first suction passage the first ejection passage, the second suction passage, and the second ejection ...

COMPRESSOR AND AIR CONDITIONER INCLUDING THE SAME

A compressor and an air conditioner including the same having an improved structure capable of decreasing a discharge temperature of the compressor. The compressor which compresses and discharges refrigerant includes a casing defining an external appearance thereof, at least one cylinder including an inner space, a rolling piston which eccentrically turns in the inner space, a vane which radially abuts the rolling piston and divides the inner space into a suction chamber and a compression chamber, and a vane chamber recessed outward of the inner space such that the vane advances and retreats, a plurality of plates disposed above and below the at least one cylinder so as to define the inner space, an injection line provided in one of the at least one cylinder and the plural plates, and a check valve installed on the injection line. 1. A compressor which compresses and discharges refrigerant , comprising:a casing defining an external appearance thereof;at least one cylinder comprising an inner space, a rolling piston which eccentrically turns in the inner space, a vane which radially abuts the rolling piston and divides the inner space into a suction chamber and a compression chamber, and a vane chamber recessed outward of the inner space such that the vane advances and retreats, the cylinder being provided within the casing;a plurality of plates disposed above and below the at least one cylinder so as to define the inner space;an injection line provided in an area, within an angle of 220 to 340 degrees from a position of the vane of the at least one cylinder in a direction of rotation of the rolling piston, in one of the at least one cylinder and the plural plates, intermediate pressure refrigerant being supplied to the inner space of the at least one cylinder through the injection line; anda check valve installed on the injection line,wherein the refrigerant is a mixture of R32 refrigerant and at least one refrigerant of R1234yf, R1234ze and R152A.2. The compressor ...

Rotary Injection Valve Systems and Apparatus and Methods for Operating the Same

Implementations described herein comprise fluid rotary injection valve systems and apparatus configured to selectively allow a working fluid to pass from one chamber into another where the fluid flow occurs at predetermined times and flow rates. Such fluid rotary injection valve systems can be useful in connection with rotational equipment and particularly for high speed rotational equipment operating with differential internal and external process pressures. 1. An apparatus comprising:a housing having a valve bore defined therein,a rotary injection valve comprising a valve barrel rotatably received therein the valve bore and a valve barrel longitudinal axis, wherein the rotary injection valve further comprises a guide pin located parallel to but in a non-concentric location with respect to the valve barrel longitudinal axis, anda guide cam defining a guide cam slot that is configured to selectively engage and apply a lateral force to the guide pin to cause the valve barrel to selectively rotate about the valve barrel longitudinal axis.2. The apparatus of claim 1 , wherein the rotary injection valve barrel further comprises at least two openings defined therein.3. The apparatus of claim 2 , wherein the rotary injection valve further comprises a first working chamber and a second working chamber claim 2 , and wherein the at least two openings are configured to allow fluid communication between the first working chamber to the second working chamber.4. The apparatus of claim 3 , wherein the at least two openings further comprises at least one inlet passage and at least one outlet passage.5. The apparatus of claim 4 , wherein claim 4 , upon rotation of the valve barrel relative to the valve bore claim 4 , at least one path configured for fluid communication is defined by the at least one inlet passage and the at least one outlet passage.6. The apparatus of claim 5 , wherein the at least one path comprises a plurality of paths that are selectively configured to allow ...

Variable Volume Ratio Compressor

A compressor may include a shell, first and second scroll members, a partition plate and a bypass valve member. The shell defines a discharge-pressure region and a suction-pressure region. The first scroll member is disposed within the shell and may include a first end plate having a discharge passage, and first and second bypass passages extending through the first end plate. The partition plate is disposed within the shell and separates the discharge-pressure region from the suction-pressure region and includes an opening in communication with the discharge-pressure region. The bypass valve member is movable between a first position restricting fluid flow through at least one of the first and second bypass passages and the opening and a second position in allowing fluid flow through the at least one of the first and second bypass passages and the opening. 1. A compressor comprising:a shell defining a discharge-pressure region and a suction-pressure region;a first scroll member disposed within the shell and including a first end plate and a first spiral wrap extending from a first side of the first end plate, the first end plate including a discharge passage, a first bypass passage and a second bypass passage extending through the first side and a second side of the first end plate;a second scroll member including a second spiral wrap cooperating with the first spiral wrap to define first and second fluid pockets therebetween, the first and second fluid pockets in communication with the first and second bypass passages, respectively;a partition plate disposed within the shell and separating the discharge-pressure region from the suction-pressure region, the partition plate including an opening in communication with the discharge-pressure region, the first scroll member including a hub through which the discharge passage extends;a bypass valve member disposed around the hub and movable between a first position in which the bypass valve member restricts fluid flow ...

Variable Volume Ratio Compressor

A compressor may include a shell, first and second scroll members, a partition plate and a bypass valve member. The shell defines a discharge-pressure region and a suction-pressure region. The first scroll member is disposed within the shell and may include a first end plate having a discharge passage, and first and second bypass passages extending through the first end plate. The partition plate is disposed within the shell and separates the discharge-pressure region from the suction-pressure region and includes an opening in communication with the discharge-pressure region. The bypass valve member is movable between a first position restricting fluid flow through at least one of the first and second bypass passages and the opening and a second position in allowing fluid flow through the at least one of the first and second bypass passages and the opening.

LUBRICANT VANE PUMP

A lubricant vane pump for providing a pressurized lubricant for an internal combustion engine includes a pump housing, a pump chamber, a shiftable control ring comprising a pressure-relief-valve, a pump rotor, a pretensioning element which pushes the control ring into a high pumping volume position, a control chamber, and a pump outlet cavity fluidically connected to the control chamber. The pump chamber comprises pump compartments which rotate from a charge to discharge zone. The control ring envelops the pump chamber. The pump rotor comprises radially slidable vanes which rotate in the control ring to provide the pump chamber with the pump compartments. A high lubricant pressure in the control chamber moves the control ring into a low pumping volume direction against the pretensioning element. The pressure-relief-valve of the control ring connects or disconnects the control chamber with one of the pump compartments between the charge zone and the discharge zone. 19-. (canceled)10. A lubricant vane pump for providing a pressurized lubricant for an internal combustion engine , the lubricant vane pump comprising:a pump housing;a pump chamber arranged in the pump housing, the pump chamber comprising a plurality of pump compartments configured to rotate from a charge zone to a discharge zone;a shiftable control ring comprising a pressure-relief-valve arranged in the pump housing, the shiftable control ring being configured to envelop the pump chamber;a pump rotor arranged in the pump housing, the pump rotor comprising radially slidable vanes which are configured to rotate in the shiftable control ring so as to provide the pump chamber with the plurality of rotating pump compartments;a pretensioning element configured to push the shiftable control ring into a high pumping volume position;a control chamber, wherein a high lubricant pressure in the control chamber moves the shiftable control ring into a low pumping volume direction against the pretensioning element; anda ...

MULTI-STAGE PUMP ASSEMBLY HAVING A PRESSURE CONTROLLED VALVE FOR CONTROLLING RECIRCULATION OF FLUID FROM THE PUMP STAGE OUTLET TO THE PUMP STAGE INLET

The invention provides a pump comprising a pump inlet, a pump outlet, at least two threaded rotors and a pressure controlled valve, the pressure controlled valve being capable of controlling re-circulation of fluid from the pump outlet to the pump inlet. The pressure controlled valve can be a control valve. The invention also provides a multiple stage pump assembly comprising at least two pumps arranged in series, wherein at least one of the pumps is the aforementioned pump. 137.-. (canceled)38. A multiple stage pump assembly comprising at least two pumps arranged in series , wherein at least the second and each subsequent pump comprises a pump inlet , a pump outlet , at least two threaded rotors and a pressure controlled valve , the pressure controlled valve configured to control re-circulation of fluid from the pump outlet to the pump inlet.39. The assembly of claim 38 , wherein the pressure controlled valve is configured to control the rate of fluid flow there-through in proportion to the gas to liquid ratio of a fluid being pumped by the pump in use.40. The assembly of claim 38 , wherein the pressure controlled valve is a control valve.41. The assembly of claim 38 , further comprising a conduit connecting the pump outlet to the pump inlet claim 38 , wherein the conduit is configured to flowre-circulated fluid from the pump outlet to the pump inlet.42. The assembly of claim 41 , wherein the pressure controlled valve is located wholly or partly within the conduit or adjacent one or other end of the conduit.43. The assembly of claim 41 , further comprising a recess in the pump outlet configured to selectively flow liquid rather than gas from an enclosure in which the threaded rotors are located to the conduit.44. The assembly of claim 38 , wherein the pressure controlled valve is configured to respond to an absolute pressure difference between the pump outlet and the pump inlet such that the valve permits fluid to flow there-through when the absolute pressure ...

PUMP ASSEMBLY

A pump assembly comprising a housing, a support frame that can be attached to the housing, and a rotor that can rotate within the housing. The housing consists of resilient material and comprises an interior surface, an inlet portion including an inlet for fluid, an outlet portion including an outlet for the fluid, and a diaphragm portion. A housing-engaging surface area of the rotor will form a sealing interference contact with the interior surface, and a chamber-forming surface area of the rotor disposed radially inward from the housing-engaging surface area will form a chamber with the interior surface. When the rotor rotates within the housing as in use, the chamber can convey fluid from the inlet portion to the outlet portion. The diaphragm portion will bear against the chamber-forming surface as the chamber-forming surface travels from the outlet to the inlet, to prevent fluid passing from the outlet to the inlet and to expel the fluid from the chamber through the outlet portion. The support frame will be attached to spaced-apart portions of the housing, and will be sufficiently stiff to counter-balance the torque applied to the housing by the rotor. 2. A pump assembly as claimed hi claim 1 , in which the support frame is configured such that the diaphragm portion claim 1 , or an area of the interior surface will be located between the spaced-apart portions.3. The pump assembly as claimed in claim 1 , in which the spaced-apart portions comprise the inlet claim 1 , and outlet portions claim 1 , respectively.4. A The pump assembly as claimed in claim 1 , in which the spaced-apart portions of the housing comprise the inlet and outlet portions claim 1 , respectively claim 1 , and there is a gap between a rotor port portion of the support frame and an external surface of the housing claim 1 , in which the rotor port portion of the support frame is configured and arranged to accommodate the rotor shaft claim 1 , so that in use claim 1 , the rotor can be driven by an ...

METERING PUMP MADE OF PLASTIC

The invention relates to a disposable metering pump made of plastic for products having solid fractions. Said disposable metering pump has two rotors () which are coupled to each other by means of gears (), can be driven in opposite directions, and are supported in a pump housing (). Each rotor () has a rotor shaft, the rotor shaft ends () of which are supported in the walls of the pump housing (). Each rotor () has two rotor blade walls (), which are arranged diametrically opposite on the rotor shaft. One partially cylindrical rotor blade shoe () is formed at each of the peripheral ends of the rotor blade walls. The rotor blade shoes () lie against the cylindrical inner wall regions of the pump housing () in a sliding and sealing manner. The rotor blade walls () have concave recesses on both sides between the rotor shafts () and the rotor blade shoes (), in each of which recesses an end edge of a rotor blade shoe of the adjacent rotor can mesh. The shaping of the rotor blade shoes and of the recesses is optimized with regard to minimal product residues. 11101156712158451013121414513121424. A plastic disposable metering pump () for products with solid components , the metering pump comprising two rotors () which are coupled to each other by gearwheels () , are configured to be driven in opposite directions and are mounted in a pump housing () provided with a suction connection () and an outlet connection () , wherein the rotors have respective rotor shafts () , rotor shaft ends () of which are supported in walls ( , ) of the pump housing () , and wherein each of the rotors () has two rotor blade walls () , which are arranged diametrically on an associated rotor shaft () and onto peripheral ends of which are formed respective partially cylindrical rotor blade shoes () , wherein the rotor blade shoes () bear slidingly and sealingly against cylindrical inner wall regions of the pump housing () , and wherein , furthermore , the rotor blade walls () have between the ...

BEARING STRUCTURES FOR GEAR PUMPS

A bearing structure for abutting a pair of gears of a gear pump includes a body including a face on which the gears rotate, an inlet defined in the body, and an outlet defined in the body. The bearing structure includes a sealing portion of the face configured to fluidly seal the inlet from the outlet, the sealing portion being defined as a portion of the face in sealing engagement with the gears at a rotational position of the gears wherein a volume contained by teeth of the gears and the face is constant or about constant as the gears rotate. 1. A bearing structure for abutting a pair of gears of a gear pump , comprising:a body including a face on which the gears rotate;an inlet defined in the body;an outlet defined in the body; anda sealing portion of the face configured to fluidly seal the inlet from the outlet, the sealing portion being defined as a portion of the face in sealing engagement with the gears at a rotational position of the gears wherein a volume contained by teeth of the gears and the face is constant or about constant as the gears rotate.2. The structure of claim 1 , wherein the sealing portion includes a point symmetric shape about a midpoint of the body.3. The structure of claim 2 , wherein the sealing portion includes a main portion having a main portion width.4. The structure of claim 3 , wherein the main portion width is about equal to a root pocket arc length of gear teeth in the pair of gears and wherein the main portion is straight.5. The structure of claim 3 , wherein two 90 degree corners extend from the main portion of the sealing portion on opposite sides of the main portion claim 3 , the corners defining a first edge and a second edge.6. The structure of claim 5 , wherein the first edge and the second edge are flat.7. The structure of claim 6 , wherein the first edge of each corner is defined parallel to a line of action of the gears.8. The structure of claim 7 , wherein the second edge of each corner is defined parallel to a contact ...

Screw Pump with Vapor Barrier

A dual-spindle screw pump having a pump housing () for a medium to be conveyed, in particular a foodstuff, which has a pump section (), at least one bearing section () and at least one gear section (), wherein the at least one bearing section () and the pump section () are constructed separately from one another, wherein the pump section is a product chamber () through which the medium is conveyed, having a conveyor housing part () as a constituent part of the pump section () in which two conveying screws () that are arranged on shafts () are provided, having at least one feed section () and at least one removal section () as constituent parts of the pump section (), preferably each having a connection flange (), wherein the product chamber () has at least one parting line () having a connection to the surrounding atmosphere (), which is provided with a vapor barrier () having a groove () as the vapor channel (), characterized in that there is provided in the groove () at least one seal () which seals the vapor channel () off from the product chamber () and from the surrounding atmosphere (). 1. A dual-spindle screw pump having a pump housing for a medium to be conveyed , in particular a foodstuff , which has a pump section , at least one bearing section and at least one gear section , wherein the at least one bearing section and the pump section are constructed separately from one another , wherein the pump section is a product chamber through which the medium is conveyed , having a conveyor housing part as a constituent part of the pump section in which two conveying screws that are arranged on shafts are provided , having at least one feed section and at least one removal section as constituent parts of the pump section , wherein the product chamber has at least one parting line having a connection to the surrounding atmosphere , and a vapor barrier having a groove as the vapor channel , the groove comprising at least one seal which seals the vapor channel off ...

Oil suction device for vehicle

An oil suction device including a primary suction port installed at an inflow end of a thin pipe for sucking oil in an oil storing section, and a third suction port formed in a gap between a first tapered surface and a second papered surface due to a relative movement of the thin pipe to the thick pipe. At a suction pressure of the oil pump less than a predetermined pressure, the oil suction device sucks only oil from the primary suction port, and at a suction pressure of the oil pump equal to or more than the predetermined pressure, air is sucked from the third suction port formed in a gap between the first tapered surface and a second tapered surface due to the relative movement of the thin pipe to the thick pipe.

GAS COMPRESSOR

In a gas compressor, an outline shape of an inner peripheral surface () of a cylinder () is set such that in a point before a compression chamber (B) adjacent to a compression chamber (A) in the upstream side in the rotational direction (W) is exposed to a discharge hole () of a primary discharge portion () with rotation of a rotor () in the rotational direction (W) (point where the compression chamber (B) is positioned upstream of an angular position of being exposed to the discharge hole () of the primary discharge portion ()), a pressure of the refrigerant gas (G) inside the compression chamber () reaches a discharge pressure. Therefore the discharge hole () of the primary discharge portion () always discharges a refrigerant gas (G) from the compression chamber () to prevent generation of the discharge pulsation. 1. A gas compressor that accommodates a compressor body inside a housing , the compressor body comprising:a substantially columnar rotor that rotates integrally with a rotary shaft;a cylinder that has an inner peripheral surface of an outline shape for surrounding the rotor from an outward of an outer peripheral surface of the rotor, and is provided with a discharge portion for, when a pressure of the gas inside the compression chamber exposed to the inner peripheral surface reaches a discharge pressure, discharging the gas inside the compression chamber;a plurality of plate-shaped vanes that are provided to be able to project toward the inner peripheral surface of the cylinder from the outer peripheral surface of the rotor; andtwo side blocks that close both ends of the rotor and the cylinder,wherein:the vanes partition a space formed between the inner peripheral surface of the cylinder and the outer peripheral surface of the rotor to form a plurality of compression chambers;the outline shape of the inner peripheral surface is set such that each compression chamber performs suction and compression of the gas, and discharge of the gas from the discharge ...

DUAL INPUT PUMP AND SYSTEM

A dual input fluid pump system for coupling to a transmission or an engine and an electrical motor is disclosed. The system may include a first external gear, vane, internal gear, or gerotor-type pump, a second external gear pump, and connecting shaft. Gears of the second pump include one-way clutch bearings that enable operation of the system in multiple modes including engine-only; motor-only; a combined mode where the engine operates the first pump via the shaft and the motor operates the second pump with an external gear rotating in its pumping direction at a rate greater than the shaft; inlet boost; and a disconnection mode. Also noted is a pump that has a first shaft for coupling the engine to a first external gear and a second shaft for coupling the motor to a second external gear, as well as a one-way clutch bearing that performs in a similar manner. 1. A dual input fluid pump system for coupling to a transmission or an internal combustion engine power source and an electrical motor power source , the pump system comprising:a first pump comprising a housing, a rotatable pumping element rotatably mounted in the housing, an inlet, an outlet, and a first input shaft for coupling the transmission or internal combustion engine power source to the rotatable pumping element thereof for rotating the rotatable pumping element in a pumping direction to pump fluid from the inlet to the outlet through the housing;a second pump that is an external gear pump comprising a housing, at least first and second intermeshed external gears rotatably mounted in the housing, an inlet, an outlet, and a second input shaft for coupling the electrical motor power source to the second external gear thereof for rotating the gears in counter-rotating pumping directions to pump fluid from the inlet to the outlet through the housing; anda connecting shaft between the rotatable pumping element of the first pump and the first external gear of the second pump, the connecting shaft being ...

PUMPS

A pump comprising a housing and a rotor rotatably accommodated in the housing and having an axis of rotation. The housing comprises a resilient seal member, an inlet and an outlet for fluid. The rotor comprises first and second surface areas, and the rotor and housing are cooperatively configured such that the second surface area is radially recessed from the first surface area, forming a chamber with an interior surface of the housing, and the first surface area seals against the interior surface. The seal member is located azimuthally between the outlet and the inlet. The seal member will engage the first and second surface areas, operative to prevent the passage of fluid from the outlet to the inlet as the rotor rotates. An edge of the seal member is coterminous with an aperture through which the fluid can flow. 1. A pump comprisinga housing anda rotor rotatably accommodated in the housing and having a longitudinal axis of rotation in use;the housing comprisinga resilient seal member,an inlet andan outlet for fluid;the rotor comprising first and second surface areas;the rotor and housing cooperatively configured such that the second surface area is radially recessed from the first surface area, forming a chamber with an interior surface of the housing,the first surface area seals against the interior surface, operable to contain the fluid within the chamber as the rotor rotates in use;the seal member is located azimuthally between the outlet and the inlet; in use, the rotor will rotate about the longitudinal axis and the chamber will be capable of receiving fluid from the inlet, conveying the fluid from the inlet to the outlet, and expelling the fluid into the outlet;the seal member will engage the first and second surface areas, operable to prevent the passage of fluid from the outlet to the inlet as the rotor rotates; whereinan unattached edge of the seal member is coterminous with an aperture through which the fluid can flow.2. The pump as claimed in claim 1 , ...

PUMP DEVICE

Pump device comprising a pump insert, without a dedicated housing, and a receiving part, wherein the pump insert is inserted in the receiving part, wherein in the receiving part the suction passage for the pump insert is designed for sucking in a fluid, wherein in the suction passage provision is made for an insertion part for optimizing fluid guiding. 1. A pump device comprising a pump insert , without a dedicated housing , and a receiving part , wherein the pump insert is inserted into the receiving part in a housing which is in fluid communication with a suction passage of the pump insert for sucking in a fluid ,wherein the receiving part the suction passage is produced without metal cutting, wherein in the suction passage provision is made at least partially for an insertion part for optimizing fluid guiding, which has the shape of a funnel which from an outside diameter, which corresponds to the inside diameter of the suction passage, widens to a diameter of the housing.2. The pump device as claimed in claim 1 ,wherein the receiving part forms a receptacle for intake of a fluid.3. The pump device as claimed in claim 1 ,wherein the receiving part is a transmission casing.4. The pump device as claimed in claim 1 , wherein the insertion part is produced from plastic.5. The pump device as claimed in claim 1 , wherein the insertion part is produced in a plastic injection molding process.6. The pump device as claimed in claim 1 , wherein the pump device is designed as a vane cell pump or gear pump.7. The pump device as claimed in claim 1 , wherein the pump insert has at least two spaced apart radial seals for sealing against the receiving part. This application is a National Stage of International Application No. PCT/EP2016/058010, filed Apr. 12, 2016, which claims priority to DE102015206684.3 filed Apr. 14, 2015. The entire disclosures of each of the above applications are incorporated herein by reference.Pump device comprising a pump insert without a dedicated ...

OIL PUMP

An oil pump includes a rotor, an outer peripheral member accommodating the rotor, a first plate, and a second plate. A discharge passage through which hydraulic fluid is discharged is connected to a discharge port of the first plate. A first pressure gradually-changing groove and a second pressure gradually-changing groove are formed such that a second flow passage area is larger than a first flow passage area, the first flow passage area being a flow passage area of the first pressure gradually-changing groove of the first plate, at a position at which the first pressure gradually-changing groove communicates with a transfer chamber passing through a sealed region, and the second flow passage area being a flow passage area of the second pressure gradually-changing groove of the second plate, at a position at which the second pressure gradually-changing groove communicates with the transfer chamber passing through the sealed region. 1. An oil pump comprising:a rotor that is driven to be rotated;an outer peripheral member that has a generally cylindrical shape and that accommodates the rotor;a first plate disposed so as to cover an opening at one end face of the outer peripheral member having the generally cylindrical shape; anda second plate disposed so as to cover an opening at the other end face of the outer peripheral member having the generally cylindrical shape, wherein a clearance is defined between an outer peripheral face of the rotor and an inner peripheral face of the outer peripheral member,the clearance is partitioned into a plurality of transfer chambers arranged in a circumferential direction of the rotor,a volume of each of the transfer chambers gradually changes as the rotor rotates,suction ports in the form of recesses are respectively formed in a face of the first plate and a face of the second plate, the faces being opposed to the transfer chambers, the suction ports including at least part of a region in which the volume of each of the transfer ...

VANE PUMP

A vane pump includes a rotor that is rotationally driven; vanes inserted into the rotor in a freely slidable manner; pump chambers that are defined between the vanes at adjacent positions; suction ports that guide working oil to the pump chambers; suction pressure chamber that is communicated with the suction ports and that stores the working oil; and a suction passage that is connected to the suction pressure chamber and that has an suction opening end that opens at an outer surface of a pump body. In a state in which the vane pump is mounted, the suction pressure chamber is mounted below the suction opening end of the suction passage. 1. A vane pump used as a fluid pressure source , comprising:a rotor configured to be driven rotationally;a plurality of vanes inserted into the rotor in a freely slidable manner;a cam ring with which tip-end portions of the vanes are brought into sliding contact with rotation of the rotor;a pump body configured to accommodate the cam ring;a pump cover configured to seal the pump body;pump chambers defined between the vanes at adjacent positions and the cam ring;a suction port configured to guide working fluid to the pump chambers;a storage chamber configured to store the working fluid, the storage chamber being configured to communicate with the suction port; anda suction passage configured to have a connection portion and a suction opening end, the connection portion being connected to the storage chamber and the suction opening end being configured to open at an outer surface of the pump body; whereinthe storage chamber is provided below the suction opening end of the suction passage in a state in which the vane pump is mounted.2. The vane pump according to claim 1 , whereinthe suction port has a first suction port and a second suction port provided so as to be opposed to each other with respect to a rotation center of the rotor, andthe storage chamber has a communication portion with which the first suction port is communicated ...

Dual pump system

Provided is a dual pump system including: a dual pump provided with a plurality of chambers independent from each other, wherein an input and an output port are provided in each of the chambers; a plurality of output lines connected to the output ports of the plurality of chambers, respectively; and a switching valve that is provided in an output line of one side of the plurality of output lines, enables a fluid to flow to the output line when operating in one direction, and enables the fluid to be drained to an oil pan through a bypass line branched from the output line when operating in the other direction.

VEHICLE HYDRAULIC DEVICE

A check valve provided makes it possible to operate a vane pump smoothly even at the start of the vane pump by maintaining an oil pressure in backpressure oil passages inside the vane pump while the vane pump is stopped. The check valve opens at the point in time when an oil pressure control device, to which a working fluid is supplied from the vane pump, has been filled with the working fluid and the oil pressure in discharge oil passages communicating with the oil pressure control device has risen and exceeded the oil pressure in the backpressure oil passages. Thus, the check valve is prevented from opening and closing repeatedly, so that the durability of the check valve is improved. 1. A vehicle hydraulic device comprising: the pump housing having an inner peripheral cam surface with an elliptical sectional shape,', 'the plurality of vanes being provided inside the pump housing,', 'the rotor providing vane housing grooves that house the plurality of vanes so as to be movable in a radial direction of the rotor; and, 'a vane pump that is driven to rotate by an engine, the vane pump including a pump housing, a plurality of vanes, and a rotor,'} the backpressure oil passages being configured to supply a backpressure to the plurality of vanes inside the vane housing grooves,', 'the discharge oil passages being configured to: (i) introduce a working fluid discharged from the vane pump, and (ii) supply the working fluid to a device other than the vehicle hydraulic device,, 'an oil pressure control circuit including backpressure oil passages and discharge oil passages,'}a check valve provided between the backpressure oil passages and the discharge oil passages, the check valve being configured to: (i) open when an oil pressure of the working fluid in the discharge oil passages discharged from the vane pump is higher than the oil pressure in the backpressure oil passages, and (ii) block a flow of the working fluid when the oil pressure of the working fluid in the ...

Scroll compressor with bypass portions

There is disclosed a scroll compressor according to the present disclosure in which a discharge port is formed at a central portion thereof, and a pair of two compression chambers continuously moving toward the discharge port are formed, and a plurality of bypass portions are formed at each interval along a movement path of each compression chamber in the both compression chambers, and compression gradients of the both compression chambers are formed to be different from each other, wherein when an interval between a bypass portion closest to the discharge port and another bypass portion adjacent to the bypass portion among the bypass portions of each compression chamber is defined as a first interval, respectively, a first interval of a second bypass portion belonging to a compression chamber having a relatively larger compression gradient is formed to be smaller than that of a first bypass portion belonging to the other compression chamber between the both compressor chambers.

Internal-Gear Pump and Hydraulic Circuit for a Motor Vehicle Drivetrain

An internal-gear pump has a housing which has a first fluid port and a second fluid port. An inner rotor is mounted in the housing so as to be rotatable about an inner rotor axis and has an external toothing. An outer rotor is rotatable in the housing about an outer rotor axis and has an internal toothing which, to generate a pump action, engages with the external toothing of the inner rotor. The internal-gear pump furthermore has a ring element which is mounted movably in the housing so as to be pivotable between a first position and a second position. At least a third fluid port is formed on the housing. The third fluid port is arranged relative to the ring element such that, in the first position of the ring element, the third fluid port is connected to the second fluid port. In the second position, said third fluid port is separated from the second fluid port. 2. An internal-gear pump according to claim 1 , wherein at least a fourth fluid port is formed on the housing claim 1 , wherein the fourth fluid port is arranged relative to the ring element such that claim 1 , in the second position of the ring element claim 1 , the fourth fluid port is connected to the second fluid port and claim 1 , in the first position claim 1 , said fourth fluid port is separated from the second fluid port.3. An internal-gear pump according to claim 1 , wherein the ring element is mounted in the housing so as to be rotatable about a ring element axis between a first rotational position and a second rotational position and has a rotor receptacle for rotatably receiving the outer rotor claim 1 , wherein the rotor receptacle is formed eccentrically with respect to the ring element axis.4. An internal-gear pump according to claim 1 , wherein the first fluid port is in the form of a suction port regardless of the rotational direction of the inner rotor claim 1 , and the second fluid port is in the form of a pressure port regardless of the rotation direction of the inner rotor.6. A ...

Scavenge gear plate for improved flow

A pump includes a first gear plate and a first pair of counter rotating gears positioned on a first side of the gear plate. The pair of counter rotating gears draws fluid from an inlet and transfers the fluid into an outlet of a common manifold. The gear plate has a cutout to increase the flow of fluid into the common manifold.

FUEL PUMP

A pump housing includes: a slide surface, along which inner and outer gears are slid; a suction guide passage, which is recessed from the slide surface and guides the fuel at a suction side; a discharge passage, which is recessed from the slide surface-and guides the fuel at a discharge side; and a communication groove, which is recessed from the slide surface and is shaped into an arcuate form that extends along a circumcircle of the inner gear. The communication groove is communicated with the suction groove and the discharge passage through two opposite groove end parts, respectively, of the communication groove. 1. A fuel pump comprising:an outer gear that includes a plurality of internal teeth;an inner gear that includes a plurality of external teeth and is meshed with the outer gear while the inner gear is eccentric to the outer gear; anda pump housing that rotatably receives the outer gear and the inner gear, wherein:when the outer gear and the inner gear are rotated to increase and decrease volumes of a plurality of pump chambers, which are formed between the outer gear and the inner gear, fuel is sequentially drawn into and is discharged from the plurality of pump chambers; and a pair of slide surfaces which hold the outer gear and the inner gear from two opposite sides, respectively, in an axial direction, so that the outer gear and the inner gear are slid along the pair of slide surfaces;', 'a suction guide passage that is recessed from at least one of the pair of slide surfaces and guides fuel at a suction side;, 'the pump housing includesa discharge guide passage that is recessed from the slide surface, at which the suction guide passage is formed, wherein the discharge guide passage guides the fuel at a discharge side;a communication groove that is recessed from the slide surface at which the suction guide passage and the discharge guide passage are formed, wherein the communication groove is shaped into an arcuate form that extends along a ...

ELECTRIC OIL PUMP

An electric oil pump includes an electric motor and an oil pump that is driven by the motive power from an electric motor, wherein; the oil pump has an introducing channel that guides a drain oil that has leaked from an interior of the oil pump to an interior of the electric motor; and the electric motor has a discharging channel that discharges the drain oil that has been guided to the interior of the electric motor to a tank. 1. An electric oil pump comprising an electric motor and an oil pump that is driven by a motive power from the electric motor , wherein:the oil pump has an introducing channel that guides a drain oil that has leaked from an interior of the oil pump to an interior of the electric motor; andthe electric motor has a discharging channel that discharges the drain oil that has been guided to the interior of the electric motor to a tank.2. An electric oil pump according to claim 1 , wherein:the electric motor has a hollow output shaft;the oil pump has an input shaft that is inserted through the output shaft and linked to the output shaft via a motive power transmission mechanism; andthe drain oil leaked from the interior of the oil pump is guided to the interior of the electric motor and to a gap between the output shaft and the input shaft through the introducing channel that is formed along an outer circumference of the input shaft.3. An electric oil pump according to claim 2 , wherein the motive power transmission mechanism has:an external gear that is integral with the output shaft;a ring-shaped internal gear that surrounds the external gear and is rotated by a motive power from an engine;a plurality of planet gears that are arranged between and meshed with the external gear and the internal gear; anda carrier that is linked to the planet gears and linked to the input shaft; and whereinthe input shaft is selectively rotated by the motive power from the electric motor or the engine.4. An electric oil pump according to claim 3 , further comprising ...

VANE OIL PUMP

A vane fluid pump for a vehicle component is provided with an inner rotor supported within a cam. The inner rotor has an outer wall extending between first and second end faces, the outer wall defining a series of slots spaced apart about the outer wall to provide a series of outer wall sections. One of the wall sections defines a groove. Another of the wall sections is independent of grooves or is ungrooved. The pump has vanes positioned within respective slots of the inner rotor and extending outwardly to contact the continuous inner wall of the cam. The groove on the inner rotor is configured fluidly couple with a notch on the housing to provide fluid flow to the discharge port from an upstream pumping chamber to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise. 1. A vane fluid pump for a vehicle component comprising:a cam defining a continuous inner wall surrounding a cavity;an inner rotor supported within the cam, the inner rotor having a cylindrical outer wall defining a series of slots equally spaced about the outer wall to provide a series of outer wall sections, each outer wall section bounded by adjacent slots, wherein a first wall section of the series of outer wall sections defines a groove, wherein a second wall section of the series of outer wall sections is independent of grooves; anda series of vanes, each vane positioned within a respective slot of the inner rotor and extending outwardly to contact the continuous inner wall of the cam;wherein the groove is configured to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise.2. The pump of further comprising a pump housing supporting the cam claim 1 , the inner rotor claim 1 , and the series of vanes claim 1 , the pump housing defining a planar surface between an inlet port and a discharge port claim 1 , the inner rotor supported by the planar surface claim 1 , the planar surface defining a notch in fluid communication with the ...

VANE PUMP

A vane pump that includes a first communication passage that extends along an outer periphery of the cam ring and that guides a fluid that has not flowed into the first suction port from the first inflow passage to the second suction port; a second communication passage that extends along the outer periphery of the cam ring on an opposite side of the first communication passage with respect to the rotor and that guides a fluid that has not flowed into the second suction port from the second inflow passage to the first suction port; and a rectifying portion that guides the fluid from the second inflow passage so that the fluid flows into the second suction port along the outer periphery of the cam ring. 1. A vane pump including a pump housing having a first inflow passage and a second inflow passage into which a fluid respectively flows , a cam ring having an inner peripheral cam surface , a rotor having a plurality of slits formed in a radial shape , a plurality of vanes each disposed in the slits of the rotor so as to be slidable and be in contact with the inner peripheral cam surface of the cam ring , a first suction port in communication with the first inflow passage , and a second suction port in communication with the second inflow passage , the vane pump comprising:a first communication passage that extends along an outer periphery of the cam ring and that guides a fluid that has not flowed into the first suction port from the first inflow passage to the second suction port;a second communication passage that extends along the outer periphery of the cam ring on an opposite side of the first communication passage with respect to the rotor and that guides a fluid that has not flowed into the second suction port from the second inflow passage to the first suction port; anda rectifying portion that guides the fluid from the second inflow passage so that the fluid flows into the second suction port along the outer periphery of the cam ring.2. The vane pump ...

System to pump fluid and control thereof

A pump having a fluid driver disposed within the interior volume of the pump and to a method of delivering fluid from an inlet of the pump to an outlet of the pump using the fluid driver. The fluid driver includes a variable-speed and/or a variable torque prime mover and a fluid displacement assembly. The pump can be used in a fluid pumping system to provide fluid to an actuator that is operated by the fluid. At least one of a speed and a torque of the pump is controlled so as to adjust at least one of a flow and a pressure in the fluid pumping system to a desired set point, without the aid of another flow control device.

LINEAR COMPRESSOR

Provided is a linear compressor. The linear compressor includes a stator cover coupled to the frame, a rear cover coupled to the stator cover, and springs disposed between the stator cover and the rear cover. The stator cover includes a body and a plurality of rear cover coupling parts extending from the body toward the rear cover and coupled to the rear cover, and the rear cover has a plane that is perpendicular to the axial direction so that an end of the rear cover coupling part and an end of the spring are disposed on the same plane in the axial direction. Also, other embodiments may be possible. 1. A linear compressor comprising:a shell;a cylinder that is disposed in the shell and that extends in an axial direction, the cylinder defining a compression space therein configured to receive refrigerant;a frame coupled to an outside of the cylinder;a piston disposed in the cylinder and configured to reciprocate in the axial direction of the cylinder;a stator cover coupled to the frame;a rear cover coupled to the stator cover; andsprings disposed between the stator cover and the rear cover,wherein the stator cover comprises a stator cover body, and a plurality of rear cover coupling parts that extend from the stator cover body toward the rear cover and are coupled to the rear cover, andwherein an end of the plurality of rear cover coupling parts and an end of the springs are disposed on a plane that is defined by the rear cover and that is orthogonal to the axial direction.2. The linear compressor according to claim 1 , wherein the stator cover body defines an opening through which the piston passes claim 1 , andwherein the plurality of rear cover coupling parts are spaced apart from one another along a circumferential direction of the stator cover body.3. The linear compressor according to claim 2 , wherein the rear cover defines a plurality of coupling holes configured to couple to the plurality of rear cover coupling parts of the stator cover claim 2 , ...

OIL PUMP

An oil pump is provided with an inner rotor having external teeth, an outer rotor disposed in a loose-fit state within a pump chamber and having internal teeth meshed with the external teeth, a ring-shaped pressure chamber provided adjacent to the pump chamber in a direction of a rotation axis, a discharge opening for connecting the pump chamber and the pressure chamber, and a cylindrical discharge passage having one end connected to the pressure chamber and the other end serving as a connection opening. A portion of the discharge passage is located to open inside of the outer periphery of the pressure chamber when viewed in the rotation axis direction. The one end reaches to a middle of the pressure chamber when viewed in a radial direction of the rotation axis, and the discharge passage and the pressure chamber are in direct communication with each other. 1. An oil pump comprising:an inner rotor configured to rotate integral with a drive shaft around a rotation axis;an outer rotor disposed in a loose-fit state within a pump chamber formed in a housing and having an internal toothed portion provided on an inner periphery of the outer rotor and meshed with an external toothed portion provided on an outer periphery of the inner rotor;a space provided adjacent to the pump chamber in a direction of the rotation axis and formed into a ring shape surrounding the rotation axis, when viewed in the rotation axis direction;a connection passage for connecting the pump chamber and the space; anda cylindrical discharge passage formed to extend parallel to the rotation axis in the housing and having one end connected to the space in a longitudinal direction and the other end serving as a discharge port that opens at a position spaced away from the pump chamber than the space in the rotation axis direction,wherein the discharge passage is provided in the housing such that a portion of the discharge passage is located to open inside of an outer periphery of the space when viewed ...

Method For Operating A Pump

A pump includes a pump housing, an inlet, an outlet, a rotatable eccentric, a deformable element between housing and eccentric and a delivery channel from inlet to outlet formed by the deformable element and the housing. The deformable element is pressed against the housing in sections by the eccentric forming a movable seal of the channel and a closed volume in the channel being movable along the channel from inlet to outlet to pump the liquid by rotating the eccentric. A method for operating the pump includes a) setting a liquid quantity to be pumped, b) determining a temperature of the deformable element, c) determining a parameter considering the temperature from step b), the parameter representing a dependence between movement of the eccentric and pump capacity and d) pumping the liquid quantity set in step a) by adapting an operating mode of the pump considering the parameter from step c).

Pump for Support of the Heart

Rotary lobe pump, comprising a pump housing ( 2, 9, 10 ) with a substantially cylindrical pump chamber ( 8 ) and a rotary lobe as rotor ( 1 ) with at least two blades ( 3 ) arranged opposite each other or evenly distributed in the circumferential direction and at least one sealing valve ( 4 ), characterized in that at least two sealing valves ( 4 a, 4 b ) arranged opposite one another or uniformly distributed in the circumferential direction are provided, the at least two sealing valves ( 4 a, 4 b ) being rotatable or pivotable, and an inlet duct ( 11 ) to at least two inlet openings ( 6 ) into the pump chamber ( 8 ) and an outlet duct ( 12 ) from at least two outlet openings ( 7 ) out of the pump chamber ( 8 ) being provided axially in a rotor axial tube ( 18 ), extending from the opposite axial ends and separated from one another.

Hydrostatic Positive Displacement Machine

A hydrostatic positive displacement machine has a cam ring for adjusting the displacement volume thereof. This cam ring is guided in translation by approximately diametrically arranged outer circumferential surface segments on associated inner surface segments of a housing of the positive displacement machine. 1. A hydrostatic positive displacement machine , comprising:a housing;a rotor mounted in the housing so as to be rotatable about an axis of rotation, said rotor being fitted with substantially radially movable space dividers; anda cam ring having an inner circumferential surface on which the space dividers are supported,wherein an annular space is formed between the rotor and the cam ring, said annular space being subdivided by the space dividers into hydrostatic working spaces configured to revolve with the rotor and be brought alternately into pressure medium connection with a high pressure and a low pressure,wherein the cam ring has approximately diametrically arranged outer circumferential surface segments configured to guide the cam ring in translation transversely to the axis of rotation on associated inner surface segments of the housing,wherein at least one of the outer circumferential surface segments has a topology which deviates from that of a plane in a load-free mode of the positive displacement machine.2. The positive displacement machine according to claim 1 , wherein a contact area of the at least one of the outer circumferential surface segments with the inner surface segment is approximately equal to the at least one of the outer circumferential surface segment in a loaded mode.3. The positive displacement machine according to claim 1 , wherein a surface pressure between the at least one of the outer circumferential surface segments and the inner surface segment is distributed in a substantially spatially uniform manner in a loaded mode.4. The positive displacement machine according to claim 1 , wherein the topology is produced by one of ...

VARIABLE DISPLACEMENT LUBRICANT PUMP

A lubricant pump comprises a shiftable control ring, a pump rotor rotating in the control ring, a pump outlet, and a pressure control system. The pressure control system comprises a pressure control chamber which pushes the control ring into a high pumping volume direction, an engine pressure input port connected to an engine pressure output port of an engine, a pilot chamber connected to the engine pressure input port which pushes the control ring into a low pumping volume direction, and a pressure control valve which controls a pressure in the pressure control chamber. The pressure control valve comprises a control valve plunger which opens/closes a control port to connect/disconnect the pressure control chamber to the atmospheric. The control valve plunger is fluidically connected to the engine pressure input port so that the control valve plunger is pushed by a lubricant pressure of the engine into an open position. 14-. (canceled)5. A variable displacement lubricant pump fluidically coupled to and being configured to be mechanically driven by an internal combustion engine for pumping a pressurized lubricant to the internal combustion engine , the variable displacement lubricant pump comprising:a control ring configured to be shiftable or pivotable with respect to a rotor axis between a high pumping volume position and a low pumping volume position;a pump rotor comprising vanes configured to be radially slidable, the pump rotor being configured to rotate in the control ring;a pump outlet; and a pressure control chamber configured to push the control ring into the high pumping volume direction,', 'an engine pressure input port connected to an engine pressure output port of the internal combustion engine,', 'a pilot chamber configured to push the control ring into the low pumping volume direction against the pressure control chamber, the pilot chamber being connected to the engine pressure input port, and', a control port, and', 'a control valve plunger configured ...

Oscillating Pump Systems for Use on Aircraft

An oscillating pump system includes a pump operable to circulate a fluid. The pump has a first port stage including an inlet port and an outlet port and a second port stage including a first oscillating port and a second oscillating port. An oscillator disk is disposed between the first port stage and the second port stage. The oscillator disk is rotatable relative to the inlet port, the outlet port, the first oscillating port and the second oscillating port. During rotation, the oscillator disk alternatingly routes the fluid to the inlet port from the first and second oscillating ports and alternatingly routes the fluid from the outlet port to the first and second oscillating ports, thereby generating oscillating fluid flow. 1. An oscillating pump system comprising:a pump operable to circulate a fluid, the pump having a first port stage including an inlet port and an outlet port and a second port stage including a first oscillating port and a second oscillating port; andan oscillator disk disposed between the first port stage and the second port stage, the oscillator disk rotatable relative to the inlet port, the outlet port, the first oscillating port and the second oscillating port;wherein, during rotation, the oscillator disk alternatingly routes the fluid to the inlet port from the first and second oscillating ports; andwherein, during rotation, the oscillator disk alternatingly routes the fluid from the outlet port to the first and second oscillating ports, thereby generating oscillating fluid flow.2. The oscillating pump system as recited in wherein the oscillator disk is rotatable between a plurality of phases including a first phase claim 1 , wherein the oscillator disk routes the fluid from the outlet port to the second oscillating port and from the first oscillating port to the inlet port and a second phase claim 1 , wherein the oscillator disk routes the fluid from the outlet port to the first oscillating port and from the second oscillating port to the ...

FUEL PUMP

A fuel pump includes: an outer gear having a plurality of inner teeth; an inner gear having a plurality of outer teeth and eccentrically meshing with the outer gear; and a pump housing that defines a cylindrical gear housing chamber housing the outer gear and the inner gear to be rotatable. The outer gear and the inner gear rotate, while expanding and contracting a volume of a plurality of pump chambers formed between the outer gear and the inner gear, to sequentially draw fuel into and discharge from the pump chamber. An inner circumference part of the pump housing has a radially-inside corner part opposing a radially-outside corner part of an outer circumference part of the outer gear, and the pump housing has an annular groove formed in an annular shape all around the radially-inside corner part. 1. A fuel pump comprising:an outer gear having a plurality of inner teeth;an inner gear having a plurality of outer teeth and eccentrically meshing with the outer gear; anda pump housing that defines a cylindrical gear housing chamber housing the outer gear and the inner gear to be rotatable, from both sides in an axial direction, wherein the pump housing has a pair of sliding surface parts sliding with the outer gear and the inner gear,the outer gear and the inner gear rotate, while expanding and contracting a volume of a plurality of pump chambers formed between the outer gear and the inner gear, to sequentially draw fuel into each of the pump chambers through an intake passage and discharge through a discharge passage, andthe pump housing has an annular groove formed in an annular shape and recessed in the axial direction from at least one of the pair of sliding surface parts to make an area on a radially outer side of the intake passage and an area on a radially outer side of the discharge passage to communicate with each other.2. (canceled)3. The fuel pump according to claim 1 , further comprising:a rotation shaft that drives to rotate; anda joint component that ...

PUMP FOR CONVEYING A FLUID, IN PARTICULAR FOR CONVEYING AN EXHAUST GAS CLEANING ADDITIVE

A pump for conveying a fluid includes a pump housing with an inlet, an outlet, an inner circumferential surface and a geometric axis. An eccentric is rotatable in the housing around the geometric axis. A deformable element is disposed in a pump gap between inner and outer surfaces of the eccentric. A conveying channel is formed from inlet to outlet by the deformable element and the inner circumferential surface. The deformable element is pressed in sections against the housing by the outer eccentric surface, forming a displaceable seal of the channel and a closed pump volume in the channel being displaceable by rotation of the eccentric for conveying the fluid along the channel from inlet to outlet. The deformable element has a protrusion on one or both sides towards the geometric axis extending over the outer eccentric surface and contacting the deformable element. A centering ring is inside the protrusion. 113-. (canceled)14. A pump for delivering a liquid , the pump comprising:at least one pump housing having at least one inlet, at least one outlet, a rotationally symmetrical inner circumferential surface and a geometric axis;an eccentric being disposed within said at least one pump housing and being rotatable relative to said at least one pump housing about said geometric axis, said eccentric having an outer surface;a deformable element being disposed in a pump gap between said inner circumferential surface of said at least one pump housing and said outer surface of said eccentric and said deformable element being contacted by said outer surface of said eccentric; anda delivery channel from said at least one inlet to said at least one outlet, said delivery channel being formed by said deformable element and said inner circumferential surface of said at least one pump housing;said deformable element being pressed against said at least one pump housing in sections by said outer surface of said eccentric to form at least one displaceable seal of said delivery ...

Pump For Conveying A Liquid, Particularly An Exhaust Gas Cleaning Additive

A pump for conveying liquid includes a pump housing with an inlet and an outlet. An eccentric mounted at the housing rotates about an axis relative to the housing. A deformable element is disposed between the housing and the eccentric. A delivery duct from the inlet to the outlet is formed by the deformable element and a circumferential housing surface. The deformable element is pressed in sections against the housing by the eccentric to form a displaceable seal of the delivery duct and a closed pump volume in the delivery duct, which can be displaced along the delivery duct from the inlet to the outlet by a movement of the eccentric to convey liquid. A channel cross-section of the delivery duct is limited by the circumferential surface, a set-back duct surface of the deformable element and a contact seal between the circumferential surface and the deformable element. 18-. (canceled)9. A pump for delivering a liquid , the pump comprising:a pump axis;at least one pump housing having at least one inlet, at least one outlet and a circumferential surface;an eccentric disposed at said pump housing and rotatable relative to said pump housing about said pump axis;a deformable element disposed between said pump housing and said eccentric, said deformable element having a set-back duct surface and said deformable element defining at least one contact seal between said circumferential surface and said deformable element;a delivery duct extending from said at least one inlet to said at least one outlet, said delivery duct being formed by said deformable element and said circumferential surface;said deformable element being pressed in sections against said pump housing by said eccentric to form at least one displaceable seal of said delivery duct and at least one closed pump volume in said delivery duct;said at least one displaceable seal and said at least one closed pump volume being displaceable along said delivery duct from said at least one inlet to said at least one outlet ...

IDLER GEAR FOR POSITIVE DISPLACEMENT GEAR PUMP

One or more techniques and/or systems are disclosed for a gear pump for low speed transfers of viscous liquid slurries promotes growth of suspended particles, such as sugar crystals, by avoiding crushing of the particles. The pump includes a rotor gear in mesh with an eccentrically mounted idler gear supported on a boss of a pump head that includes a crescent seal extending into an opening resulting from the eccentricity of the idler gear relative to the rotor gear. The idler gear contains a radially extending land on each tooth profile, symmetrically oriented on adjacently spaced pairs of teeth. The lands, configured to minimize crushing of crystals passing through the pump, engage mating rotor teeth for sealing between inlet and outlet ports of the pump. To promote crystal growth, the lands cover only 10% to 30% of profile surface area of each tooth. To minimize gear tooth wear, the lands are axially staggered between successive adjacent pairs of teeth. 1. A positive displacement gear pump comprising:a casing defining a casing interior, the casing comprising an inlet port and an outlet port for transferring a target fluid though the casing interior;an external rotor gear supported within an inboard end of the casing by a rotor shaft, the external rotor gear comprising radially inwardly oriented teeth;a head positioned at an outboard end of the casing; andan internal idler gear rotationally supported on the head about an idler gear axis within the casing interior, the internal idler gear comprising radially outwardly oriented teeth, the internal idler gear being operably disposed on the head in a fixed, radially eccentric, relationship with the external rotor gear, and at least a portion of the internal idler gear teeth operably meshing with at least a portion of the external rotor gear teeth; two radially oriented surfaces respectively extending between a root and a tip of the idler gear tooth;', 'a land comprising a substantially planar surface rising from the ...

COMPRESSOR

A check valve includes a valve seat portion and a reed valve element and is received in a receiving hole of an intermediate pressure refrigerant supply passage that is placed adjacent to a flow inlet of an injection port, through which a refrigerant of an intermediate pressure is injected into a compression chamber. A center of the flow inlet of the injection port is offset from a central axis of a valve seat passage formed in the valve seat portion. 1. A compressor , comprising: a low pressure refrigerant supply passage that conducts refrigerant, which has a low pressure;', 'a compression chamber that compresses the refrigerant supplied from the low pressure refrigerant supply passage to a high pressure, which is higher than the low pressure, and discharges the compressed refrigerant out of the compression chamber; and', 'an intermediate pressure refrigerant supply passage that is communicatable with the compression chamber through an injection port to inject refrigerant, which has an intermediate pressure that is higher than the low pressure and is lower than the high pressure, into the compression chamber; and, 'a housing that includesa check valve that includes a valve seat portion and a reed valve element and is received in a receiving hole of the intermediate pressure refrigerant supply passage, which is placed adjacent to a flow inlet of the injection port, wherein:the valve seat portion has a valve seat and a valve seat passage, wherein the valve seat passage is located radially inward of the valve seat and extends through the valve seat portion to conduct the refrigerant therethrough;a center of the flow inlet of the injection port is offset from a central axis of the valve seat passage;the reed valve element is seatable against the valve seat to close the valve seat passage and is liftable from the valve seat to open the valve seat passage; anda check valve chamber is formed in the receiving hole at a location between the valve seat portion and a wall ...

FLUID PUMP

A fluid pump includes a housing, a rotary shaft, and pump units which are contained in the housing and sucks in, pressurizes, and discharges fluid with being rotationally driven by the rotary shaft. The housing has a suction passage conducting the fluid from a suction port to the pump unit, a discharge passage conducting the fluid from the pump unit to a discharge port, a return passage returning a portion of the fluid flowing through the discharge passage to an upstream side of the pump unit, and a control valve controlling a flow of the returned fluid. The return passage is formed so as to conduct the returned fluid in the same direction as a flow of a sucked fluid flowing through the suction passage to make the returned fluid flow together with the sucked fluid. 1. A fluid pump , comprising:a housing having a suction port for sucking in fluid from an outside, and a discharge port for discharging the fluid to the outside;a rotary shaft rotatably supported with respect to the housing; anda pump unit contained in the housing and for sucking in, pressurizing, and discharging the fluid with being rotationally driven by the rotary shaft;wherein the housing includes a suction passage conducting the fluid from the suction port to the pump unit, a discharge passage conducting the fluid from the pump unit to the discharge port, a return passage returning a portion of the fluid flowing through the discharge passage to an upstream side of the pump unit, and a control valve arranged on a middle of the return passage and controlling a flow of a returned fluid, andthe return passage is formed so as to conduct the returned fluid in the same direction as a flow of a sucked fluid flowing through the suction passage to make the returned fluid flow together with the sucked fluid.2. The fluid pump according to claim 1 , further comprising a pipe-shaped member defining the return passage claim 1 ,wherein the pipe-shaped member is formed so as to extend parallel to an extension ...

GEAR PUMP AND METHOD FOR REALISING IT

A gear pump comprising:—a pair of gears () able to interact with a fluid crossing the pump ();—a housing seating () of said pair of gears (), said housing seating () comprising a rest plane () of a shim ();—a delivery conduit () which develops from said housing seating () and comprising an inlet mouth (). The inlet mouth () of the delivery conduit () is at a distance from an intersection () between a rest plane () of the shim () and remaining parts of the housing seating (). 23. The pump according to claim 1 , characterised in that said housing compartment () comprises:{'b': 31', '32', '20', '2', '31', '30, 'a first and a second base (, ) which develop transversally to a direction () parallel to the rotation axis of at least one of said gears (); said first base () comprising said rest plane ();'}{'b': 33', '31', '32', '60', '6', '33', '7, 'a lateral surface () interposed between the first and the second base (, ); said inlet mouth () of the delivery conduit () being entirely fashioned in said lateral surface () and the minimum distance from said intersection () being greater than 10 millimetres.'}353231331310311304. The pump according to claim 2 , characterised in that it comprises a cover () which defines said second base () opposite said first base () and which contributes to delimiting the housing seating (); said first base () comprising a recess () having a bottom () defined by said rest plane () of the shim ().4333046. The pump according to claim 2 , characterised in that said lateral surface () and said rest plane () of the shim () have a surface finish that is better than a surface finish of an initial portion of said delivery conduit ().52. The pump according to claim 1 , characterised in that said pair of gears () are a pair of cogwheels which enmesh with one another and interact with the fluid crossing the pump.78. The method according to claim 6 , characterised in that the step of realising the first body () comprises steps of:{'b': 80', '80', '31', '33 ...

CHECK VALVE WITH INTERNAL MASS FOR PROGRESSIVE CAVITY PUMPS

The present invention corresponds to a check valve with an inertial mass that is installed in the bottom of the production tubing and above the progressive cavity pump (PCP) of an oil well, which prevents that the hydrostatic column that is inside of the production tubing go down in the moment where the artificial lift of the column stops for the detention of the PCP pump. If we prevent that this phenomenon to happen, the PCP pump will not rotate in the opposite direction of its normal operation and it will not be clogged by any particulate material that is contained in it. 13172525. A check valve with an inertial mass for progressive cavity pump (PCP) , characterized by having a piston that overcomes the frictional force between the inner packing and the stem by mass , it makes a downward movement , and it makes a seal with niple and closes the fluid passage between the stem and the niple .2171235. The check valve with an inertial mass for progressive cavity pump (PCP) of claim 1 , characterized by having an upper nut claim 1 , which presents the wedges that serve to fit the grooves wedge of the piston claim 1 , once its unseated of the niple and the well is in production.3312322. The check valve with an inertial mass for progressive cavity pump (PCP) of claim 1 , that is characterized by comprising a piston that has a inter geometry with an inner diameter D that is lower than the diameter D claim 1 , which suspends the seizing of the piston in the stem by buckling of the stem .43184. The check valve with an inertial mass for progressive cavity pump (PCP) of claim 1 , characterized by having a piston that has an outer packing which is adjusted by the piston cover . The present invention is related to the field of mechanical engineering and is applied in the hydrocarbon sector.Specifically, the present invention it is applied in oil wells where the PCP pumps are used.The patent request number 2006027513 “Improvement System in a fuel pump” has a fuel supply system ...

VANE PUMP DEVICE

An inner-plate cam ring side recess portion is formed in a cam ring side end surface of an inner plate, communicates with a columnar groove which is a center side space in a vane grooves, and supplies a working fluid to the columnar groove. The inner-plate cam ring side recess portion is divided into multiple sections between a first side discharge port, through which the working fluid is discharged at a first discharge pressure from a pump chamber, and a second side suction port through which the working fluid is suctioned into a pump chamber discharging the working fluid at a second discharge pressure. An angle of a separation portion in a rotation direction is smaller than or equal to an angle between the first side discharge port and the second side suction port. 1. A vane pump device comprising:multiple vanes;a rotor that includes vane grooves which are recessed from an outer circumferential surface of the rotor in a rotational radial direction such that the vanes are supported to be movable in the rotational radial direction, and that rotates due to a rotating force received from a rotation shaft;a cam ring that includes an inner circumferential surface facing the outer circumferential surface of the rotor, and is disposed to surround the rotor;one side member disposed on one end portion side of the cam ring in a direction of a rotational axial direction to cover an opening of the cam ring; andanother side member disposed on the other end portion side of the cam ring in the rotational axial direction to cover an opening of the cam ring,wherein a recess portion is formed in a cam ring side end surface of at least one of the one side member and the other side member, communicates with a center side space which is a space in the vane grooves on a rotation center side, and supplies a working fluid to the center side space, andwherein the recess portion is divided into multiple sections between a first side discharge port, through which the working fluid is ...

VANE PUMP DEVICE

An inner-plate cam ring side recess portion is formed in a cam ring side end surface of an inner plate, communicates with a columnar groove which is a center side space in vane grooves, and supplies a working fluid to the columnar groove. The inner-plate cam ring side recess portion is divided into multiple sections between a first side discharge port, through which the working fluid is discharged at a first discharge pressure from a pump chamber, and a second side suction port through which the working fluid is suctioned into a pump chamber discharging the working fluid at a second discharge pressure. The size of a separation portion in a rotation direction is larger than that of the columnar groove of the vane groove in the rotation direction. 1. A vane pump device comprising:multiple vanes;a rotor that includes vane grooves which are recessed from an outer circumferential surface of the rotor in a rotational radial direction such that the vanes are supported to be movable in the rotational radial direction, and that rotates due to a rotating force received from a rotation shaft;a cam ring that includes an inner circumferential surface facing the outer circumferential surface of the rotor, and is disposed to surround the rotor;one side member disposed on one end portion side of the cam ring in a rotational axial direction to cover an opening of the cam ring; andanother side member disposed on the other end portion side of the cam ring in the rotational axial direction to cover an opening of the cam ring,wherein a recess portion is formed in a cam ring side end surface of at least one of the one side member and the other side member, communicates with a center side space which is a space in the vane groove on a rotation center side, and supplies a working fluid to the center side space, andwherein the recess portion is divided into multiple sections between a first side discharge port, through which the working fluid is discharged at a first discharge pressure from ...

Twin rotor devices with internal clearances reduced by a coating after assembly, a coating system, and methods

A method of treating, tuning, assembling, and/or overhauling a twin rotor device includes applying a coating material on an internal set of working surfaces of the twin rotor device when at least partially assembled. The coating may be factory or field applied to a new or used twin rotor device. The working surfaces may be uncoated or previously coated and may be built-up as the coating material forms a coating on at least some of the working surfaces. Manufacturing variations of a pair of rotors and a housing may be compensated by the coating. One or more performance characteristics of the twin rotor device may be improved by the coating, and variation between a series of twin rotor device may be reduced or substantially eliminated. The coating may reduce internal leakage and increase volumetric efficiency of the twin rotor device. The twin rotor device may be a supercharger 200, a screw compressor 1200, or other twin rotor device.

ROTARY PUMP OR MOTOR WITH ORBITAL PISTON ASPIRATION, METHODS OF PRODUCTION AND USES THEREOF

Rotary components are described that include a housing comprising a rotor having a rotor working face and a gate having a gate working face and a pocket; at least one vane, wherein the vane is coupled to the rotor; at least one wiper coupled to the vane; a plurality of endplates coupled to the housing, wherein at least one of the endplates is a float plate; an intake chamber; and an outlet chamber. In addition, methods of aspirating a working medium by utilizing the rotary component having at least one float plate includes pulling the working medium into the intake chamber, depositing the working medium into a working chamber that is located between the intake chamber and the outlet chamber; maintaining the working medium in a stationary position until the vane sweeps around toward the outlet chamber; accumulating the working medium into the outlet channel of the outlet chamber; and centrifugally ejecting the working medium into the outlet chamber and out of the system. 123-. (canceled)24. A method of aspirating a working medium by utilizing a rotary component , the method comprising: a housing comprising a rotor having a rotor working face and a gate having a gate working face and a pocket;', 'at least one vane, wherein the vane is coupled to the rotor;', 'at least one wiper coupled to the vane;', 'a plurality of endplates coupled to the housing, wherein at least one of the endplates is a float plate;', 'an intake chamber; and', 'an outlet chamber;, 'providing a rotary component comprisingpulling the working medium into the intake chamber, depositing the working medium into a working chamber that is located between the intake chamber and the outlet chamber;maintaining the working medium in a stationary position until the vane sweeps around toward the outlet chamber;accumulating the working medium into the outlet channel of the outlet chamber; andcentrifugally ejecting the working medium into the outlet chamber and out of the system.25. The method of claim 24 , ...

GAS COMPRESSOR

A compressor () comprises: a compressor main body () being formed so that one cycle of stroke is performed by a compression room () which is partitioned by a rotor (), cylinder (), both side blocks (), and vanes () during one revolution of the rotor (); a cyclone block () which separates a refrigerant oil (R) from refrigerant gas (G), wherein a second discharge section () which discharge the refrigerant gas (G) when the pressure inside the compression room () reaches the discharge pressure before the compression room () faces a first discharge section () is formed, and a communicating path () which connects a discharge chamber () in the first discharge section () and a discharge chamber () in the second discharge section () is formed on the upper stream side of than the cyclone block (). 1. A gas compressor comprising:an approximately cylindrical rotor being rotatable around a shaft;a cylinder having an inner circumferential surface which has a contour shape surrounding the rotor from the outside of an outer circumferential surface of the rotor;a plurality of plate-like vanes disposed to be projectable from the rotor toward the outside by a back pressure from a vane groove which is formed in the rotor;two side blocks contacting and shielding both end surfaces of the rotor and the cylinder;a compressor main body including inside thereof a plurality of compression rooms which are partitioned by the rotor, the cylinder, the two side blocks, and the vanes, and each compression room being formed so as to perform only one cycle of suction, compression, and discharge of the gas through the first discharge section in the cylinder during one revolution of the rotor; andan oil separator separating oil from the gas discharged from the compressor main body, the oil being separated from the gas while the gas passes through the oil separator, whereinthe cylinder includes a second discharge section discharging the gas inside the compression room when the pressure of the gas inside ...

MICROPUMP, BEARING ELEMENT FOR A MICROPUMP, AND WORKING METHOD

The invention relates to a micro pump, comprising an inner rotor arranged on a shaft and an outer rotor, which form a rotor unit including a delivery chamber for fluid, wherein the pump comprises a multi-functional bearing member for the shaft with improved lubrication, to a bearing member for a micro pump and to an operating method. 115-. (canceled)161617. A micro pump for delivering fluid from an inlet () to an outlet () having higher pressure than the inlet , the micro pump , comprising:{'b': '3', 'an inner rotor () with external teeth;'}{'b': '13', 'an outer rotor () with internal teeth; and'}{'b': 6', '3', '13, 'a bearing member (), wherein the external teeth of the inner rotor () mesh with the internal teeth of the outer rotor ();'} [{'b': 3', '2', '13', '3', '10, 'the inner rotor () is fastened to a rotatable shaft () and the outer rotor () is mounted eccentrically to the inner rotor () in a rotor accommodating member () in a radial direction;'}, {'b': 6', '2', '3', '13', '10', '15', '14, 'the bearing member (), the shaft (), the inner rotor (), the outer rotor () and the rotor accommodating member () are provided in a hermetically tight housing including a housing cover () and a lower housing part () without projecting therefrom, so that a delivery chamber is formed between the inner rotor and the outer rotor;'}, {'b': 6', '24', '25', '26', '27', '28', '17', '6', '15', '6, 'the bearing member () comprises a fluid passage (, , , , ) leading from the delivery chamber to the outlet () of the micro pump and the fluid passage is configured to guide the fluid through the bearing member () and a cavity surrounded by the housing cover () wherein the bearing member () is accommodated;'}, {'b': 6', '4', '5', '2', '9, 'the bearing member () is configured to provide at least one radial bearing (, ) for the rotatable shaft () and an axial bearing () for the inner and outer rotors in at least one axial direction; and'}, {'b': '2', 'the shaft () is in the radial direction ...

VANE OIL PUMP

A vane oil pump includes a rotor including a plurality of slits, a housing having an inner circumferential cam surface such that a first pump unit and a second pump unit taking in and discharging oil in accordance with rotation of the rotor are separately disposed in a rotational direction of the rotor, a plurality of vanes respectively fitted in the slits of the rotor, and a pressure adjusting device configured to adjust a second discharge pressure of the second pump unit to a lower pressure than a first discharge pressure of the first pump unit. A back pressure groove is disposed on the housing and is provided to supply back pressure oil to a bottom portion of each slit. 1. A vane oil pump comprising:a rotor including a plurality of slits open on an outer circumferential surface of the rotor;a housing having an inner circumferential cam surface, the housing accommodating the rotor inside the housing such that the outer circumferential surface of the rotor faces the inner circumferential cam surface, the housing being configured to allow rotation of the rotor with respect to the housing, the inner circumferential cam surface of the housing being configured to have a diameter dimension from a rotational axis of the rotor, and the diameter dimension being configured to increase or decrease in a rotational direction of the rotor such that a first pump unit and a second pump unit taking in and discharging oil in accordance with rotation of the rotor are separately disposed in the rotational direction of the rotor;a plurality of vanes respectively fitted in the slits of the rotor, a tip end portion of each vane being radially disposed to protrude from the opening of each slit of the rotor, and the vanes being configured to advance or retract with respect to the slits in a radial direction of the rotor; anda pressure adjusting device configured to adjust a second discharge pressure of the second pump unit to a lower pressure than a first discharge pressure of the first ...

REMANUFACTURING A TRANSMISSION PUMP ASSEMBLY

A transmission pump is be removed from service and remanufactured into a remanufactured transmission pump. A first gear assembly is removed from the pump. A bore of the pump is machined from a first depth to a greater second depth. A second gear assembly is installed in the machined bore. The second gear assembly has a same horizontal geometry and a greater axial depth than the first gear assembly. 1. A method of remanufacturing a pump for an automotive transmission comprising:removing a first gear assembly from the pump;machining a bore of the pump from a first depth to a greater second depth;installing a second gear assembly in the machined bore, the second gear assembly having a same horizontal geometry and a greater axial depth than the first gear assembly.2. The method of wherein a first difference in the axial depth between first chambers in the first gear assembly and second chambers in the second gear assembly is equal to a second difference between the first and second bore depths.3. The method of wherein the second gear assembly has a greater gear thickness than the first gear assembly.4. The method of wherein a first difference in the axial depth between the first chambers in the first gear assembly and second chambers in the second gear assembly is equal to a second difference in gear thickness between the first and second gear assemblies.5. The method of wherein the pump is a gerotor pump.6. The method of wherein the first gear assembly has first inner and outer gears and the second gear assembly has second inner gear and outer gears.7. The method of wherein first chambers are formed between the first inner and outer gears and the second chambers are formed between the second inner and outer gears.8. The method of further comprising:disassembling the transmission to access the pump to remove the first gear assembly;reassembling the transmission after the second gear assembly is installed.9. The method of further comprising:removing the transmission from ...

Oil Pump

An oil pump includes an inner rotor, an outer rotor, an outer ring, and a pump housing including a suction port and a discharge port, and including a first seal land formed between a terminal end section of the suction port and a start end section of the discharge port, and moreover including a rotor chamber that houses the inner rotor, the outer rotor, and the outer ring. In swing of an angle from an initial position to a final position of the outer ring, a final position eccentric axis connecting a rotation center of the inner rotor and a rotation center of the outer rotor is turnable in an area of an angle exceeding 90 degrees on the suction port side with respect to an initial position eccentric axis. 1. An oil pump comprising:an inner rotor including outer teeth;an outer rotor including inner teeth that form, together with the outer teeth, cells, and rotating while having a predetermined eccentricity amount with respect to a rotation center of the inner rotor;an outer ring that swings, with respect to a rotation center of the inner rotor, a rotation center of the outer rotor along a track circle having the eccentricity amount as a radius; anda pump housing including a suction port and a discharge port, and including a first seal land formed between a terminal end section of the suction port and a start end section of the discharge port, and moreover including a rotor chamber that houses the inner rotor, the outer rotor, and the outer ring, whereinin swing of an angle from an initial position to a final position of the outer ring, a final position eccentric axis connecting the rotation center of the inner rotor and the rotation center of the outer rotor is turnable in an area of an angle exceeding 90 degrees on the suction port side with respect to an initial position eccentric axis.2. The oil pump according to claim 1 , wherein claim 1 , in the swing from the initial position to the final position of the outer ring claim 1 , the final position eccentric axis ...

Pump

Pump ( 1 ) comprising:—means ( 2 ) for pumping a working fluid;—an electric motor ( 3 ) for actuating the pumping means ( 2 ); said motor ( 3 ) comprising a stator ( 31 ) and a rotor ( 32 ) that interact for the actuation of the pumping means ( 2 ); said rotor ( 32 ) being rotatable about an axis of rotation ( 320 );—an electronic unit ( 4 ) for controlling the electric motor ( 3 );—a conduit ( 5 ) for the delivery of the working fluid downstream of the pumping means ( 2 );—a line ( 6 ) for cooling the electric motor ( 3 ) and the electronic unit ( 4 ), said cooling line ( 6 ) being permanently open and drawing off some of the working fluid processed by the pumping means ( 2 ). The cooling line ( 6 ) comprises a first conduit ( 61 ) which is developed from a delivery area ( 22 ) of the pumping means ( 2 ).

APPARATUS AND METHOD FOR IMPROVING AN ELECTRIC SUBMERSIBLE PUMP SYSTEM

An electrical submersible pump system include an electric submersible pump coupled to a lower end of a production conduit extending into a wellbore, the production conduit in fluid communication with a discharge of the electric submersible pump and with a well conduit extending to the surface. A bypass conduit is nested inside the production conduit and is in fluid communication with the discharge. The check valve is opened when flow is established in the annular space and is otherwise closed. The bypass conduit extends for a selected distance above the discharge. The bypass conduit has a plurality of selected diameter apertures through a wall of the bypass conduit to enable flow into the annular space. 1. An electrical submersible pump system , comprisingan electric submersible pump coupled to a lower end of a production conduit extending into a wellbore, the production conduit in fluid communication with a discharge of the electric submersible pump and with a well conduit extending to the surface;a bypass conduit nested inside the production conduit and in fluid communication with the discharge; andwherein the bypass conduit extends for a selected distance above the discharge, the bypass conduit having a plurality of selected diameter apertures through a wall of the bypass conduit to enable flow into the annular space.2. The system of wherein the apertures have a size which decreases with respect to increasing distance above the discharge.3. The system of wherein the apertures have a size which is selected to control fluid pressure drop along the bypass conduit.4. The system of wherein the apertures are at least one of angled toward the discharge and transverse to a longitudinal dimension of the bypass conduit.5. The system of wherein the bypass conduit is closed at an upper end of the bypass conduit.6. The system of wherein the selected length of the bypass conduit above the pump discharge is related to a solids fraction of fluid lifted by the pump system and a ...

FLUID WORKING SYSTEMS

A fluid working system such as a pump for displacing a working fluid such as hydraulic fluid or a motor using a working fluid is provided. The system may have a positive displacement machine which includes one or more working chamber with displacement means such as a cylinder with a reciprocating piston. There are also two or more fluid ports to allow the working fluid to flow into and out of the working chamber. The working fluid flows from one fluid port means to another either being forced to do so when pumped or moving the piston when functioning as an engine. The fluid working system has associated therewith a non-dead compliance volume of a material such as syntactic foam. This compliance volume acts to smooth any pressure fluctuations within the working fluid system. 121-. (canceled)22. A fluid working system for a working fluid including a positive displacement machine ,said positive displacement machine comprising:at least one working chamber and, at least two, fluid port means allowing working fluid to flow into and out of said working chamber,displacement means within, or defined by, said working chamber to displace, or be actuated by, working fluid from one fluid port means to another,wherein the fluid working system has associated therewith a compliance volume smoothing pressure fluctuations of said working fluid within said fluid working system.23. The fluid working system for a working fluid including a positive displacement machine as claimed in wherein said fluid port means comprises valves operable to be individually opened and closed at a selected rate.24. The fluid working system for a working fluid including a positive displacement machine as claimed in wherein the compliance volume is housed within the working chamber.25. The fluid working system for a working fluid including a positive displacement machine as claimed in wherein the compliance volume is housed within the displacement means.26. The fluid working system for a working fluid ...

SYSTEMS AND METHODS OF SECURING A COMPLIANT MEMBER IN A PUMP

A pump includes a pump-head portion including a pump body and a magnet cup. The pump body defines an inlet and an outlet, and the pump body and the magnet cup together define a pump cavity. The pump includes a suction shoe situated on the pump body. The suction shoe includes an engaging portion. The pump includes a movable pumping member situated in the pump cavity and at least partially received within the suction shoe. The pump includes a permanent magnet coupled to the pumping member. The pump includes a pump-driver portion including a magnet driver located outside the magnet cup. The pump includes a pressure-absorbing member situated in the pump cavity. The pressure-absorbing member is configured to engage the engaging portion of the suction shoe such that the suction shoe is urged radially inwardly with respect to an outer edge portion of the surface of the pump body. 1. A pump , comprising:a pump-head portion including a pump body and a magnet cup, the pump body defining at least one inlet and at least one outlet, the pump body and the magnet cup together defining a pump cavity that is in contact with the liquid being pumped whenever the pump cavity is primed with the liquid;a suction shoe situated on a surface of the pump body, the suction shoe including an engaging portion;a movable pumping member situated in the pump cavity and at least partially received within the suction shoe, the pumping member, when driven to move, urging flow of the liquid from the inlet through the pump cavity and the magnet cup to the outlet;a permanent magnet situated in the magnet cup, the magnet being rotatable in the magnet cup and being coupled to the movable pumping member in the pump cavity;a pump-driver portion including a magnet driver located outside the magnet cup, the magnet driver being magnetically coupled through the magnet cup to the magnet to rotate the magnet in the magnet cup and, thus, move the pumping member in the pump cavity; anda pressure-absorbing member ...

PISTON MACHINE WITH COOLING FUNCTION

The invention relates to a piston machine which comprises: a housing with a chamber with has a substantially circle sector-shaped cross-section; a pivotal piston which is designed as a pivoting element, is arranged in the housing and comprises a first working surface, wherein the housing and the piston define at least one first variable working chamber; a drive or output which is connected to the piston; and an outlet which is arranged in the working chamber for discharging a working fluid. The housing has a cooling opening in at least one housing wall, said opening leading to the chamber at least for convectively cooling a piston side opposite the first working surface by means of a coolant. 1. Piston machine , comprising:a housing with a chamber which has a substantially circle sector-shaped cross-section,a pivotal piston which is designed as a pivoting element, is arranged in the housing and comprises a first working surface,wherein the housing and the piston define at least one first variable working chamber,a drive or output which is connected to the piston,an outlet which is arranged in the working chamber for discharging a working fluid,characterized in thatthe housing has a cooling opening in at least one housing wall, said opening leading to the chamber at least for convectively cooling a side of the piston opposite the first working surface by means of a coolant.2. Piston machine according to claim 1 ,whereinthe chamber is delimited by a wall, which is circular arc-shaped in cross-section, and the cooling opening is provided in the circular arc-shaped wall.3. Piston machine according to claim 2 ,whereinthe opening in the circular arc-shaped wall is defined by a center angle which is at most as large as a pivot angle of the piston.4. Piston machine according to claim 2 ,whereinthe circular arc-shaped wall defines a second center angle wherein a piston side facing the circular arc-shaped wall is circular arc-shaped in cross-section and defines a third center ...

GAS COMPRESSOR

A gas compressor includes at least two first and second discharge ports () which are provided at an upstream side in a rotation direction of a rotor () along a peripheral direction of an inner peripheral surface of a cylinder () with respect to a closest area (proximity part ()) where the inner peripheral surface () of the cylinder () and an outer peripheral surface () of the rotor () are closest in a range of one revolution of a rotation shaft () and configured to discharge the refrigerant gas compressed in compression chambers (). Of the first and second discharge ports (), on only the first discharge port () closest to the proximity part (), a cutout groove portion () is provided at a downstream-side edge portion of the first discharge port () in the rotation direction of the rotor (). 1. A gas compressor comprising:a generally cylindrical rotor that rotates integrally with a rotational shaft;a cylinder including an inner peripheral surface having a contour shape surrounding an outer peripheral surface of the rotor;a plurality of plate-shaped vanes movably disposed in vane grooves formed in the rotor, the vane being projectable from the outer peripheral surface of the rotor to the inner peripheral surface of the cylinder, and the vanes forming a plurality of compression chambers which partition a space between the inner peripheral surface of the cylinder and the outer peripheral surface of the rotor, the contour shape of the cylinder being set such that the formed compression chambers perform by one cycle of suction, compression, and discharge of a medium during one revolution of the rotor;two side blocks that close both sides of each of the rotor and the cylinder; andat least two discharge ports configured to discharge the medium compressed in the compression chambers to an exterior,wherein the discharge ports are provided at an upstream side in the rotation direction of the rotor along a peripheral direction of the inner peripheral surface of the cylinder with ...