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.

НАСОСНАЯ ИЛИ КОМПРЕССОРНАЯ УСТАНОВКА

Изобретение касается устройства для перекачки или сжатия текучей среды. Устройство включает в себя камеру с впуском и выпуском, противостоящие передние и задние лопастные элементы, расположенные внутри камеры. Каждый лопастной элемент включает в себя по меньшей мере один аксиально проходящий лопастной сегмент и по меньшей мере один расположенный радиально открытый сегмент, предназначенный для приема лопастного сегмента противостоящего лопастного элемента, где соседние лопастные сегменты сопряженных лопастных элементов образуют радиальные отсеки в промежутке между друг другом. Устройство также включает средство для создания равнопротивоположного вращательного колебания переднего и заднего лопастных элементов таким образом, чтобы соседние лопастные сегменты совершали колебательные движения одновременно в направлении навстречу друг другу и друг от друга, тем самым создавая эффект мембраны, засасывающей текучую среду в камеру через впуск и отводящей текучую среду из камеры через выпуск. Изобретение ...

ОБЪЕМНАЯ МАШИНА ДЛЯ ИСПОЛЬЗОВАНИЯ В КАЧЕСТВЕ НАСОСА ИЛИ ДВИГАТЕЛЯ

Изобретение относится к объемным машинам для использования в качестве насоса или двигателя. Машина содержит вал 4, обращенный к рабочему органу 13 и имеющий с ним общую плоскость 14 скольжения, в результате чего ограничивающий рабочие камеры 12 рабочий орган 13 способен совершать качательные движения в неподвижном корпусе 10. Вал 4 выполнен с головкой и с соединительным каналом, проходящим в валу 4 для направления среды от рабочих камер 12 или к рабочим камерам 12. В рабочем органе 13 выполнены каналы, начинающиеся от рабочих камер 12 и ведущие к коллектору, замкнутому по радиусу снаружи и выходящему непосредственно в соединительный канал. Изобретение направлено на создание простой и недорогой в производстве объемной машины в виде насоса или двигателя для жидких или газообразных сред, которая развивает или преобразовывает высокие давления. 12 з.п. ф-лы, 13 ил.

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 ...

НАСОС ВЫСОКОГО ДАВЛЕНИЯ

ПЛACTИHЧATЫЙ OБ'EMHЫЙ HACOC

Роторная машина

Изобретение позволяет повысить объемный КПД роторной машины. Внутренняя полость корпуса 1 с торцовыми крышками 3 выполнена в виде двух сопряженных между собой цилиндрических поверхностей 5. В полости установлены с постоянным зазором и с возможностью синхронного вращения в одном направлении профилированные роторы (Р) 6 с выпуклой боковой поверхностью . В Р 6 имеются дуговые окна 7, выходящие на боковую поверхность с возможностью периодического сообщения с каналами подвода 4 и отвода 2 рабочей среды. Образующие поверхности каждого Р б выполнено в виде сопряженных между собой дуг окружностей. Окно 7 расположено ниже линии, проходящей через центры дуг боковых образующих каждого Р 6. Каналы 2 выполнены в корпусе 1 и расположены со смешением относительно линии излома поверхностей 5 в направлении,противоположном вращению Р 6. 4 ил. 2 6 N ю СП Ј ...

Поворотный золотниковый гидрораспределитель

... 1. ПОВОРОТНЫЙ ЗОЛОТНИКОВЫЙ ГВДРОРАСПРЕДЕЛИТЕЛЬ для роторно-поршневой машины, насоса или гидродвигателя , в частности для гидростатических устройств управления автомобилей, содержащий зубчатое колесо с жестким корпусом и внутренними зубьями и установленное в нем имеющее на один , зуб меньше зубчатое колесо с наружными зубьями, которое через имеющую ограниченную свободу поворота шарнирную муфту соединено с валом машины и через поводковое соединение связано с установленным во внутреннем от- . верстии корпуса с возможностью перемещения в осевом направлении поворотным золотником, причем образованные между профилями зубьев зубчатого кольца и зубчатого колеса вытеснйтельные ячейки через осевые каналы-, выполненные в корпусе в количестве, равном числу впадин между зубьями зубчатого кольца, и через входящие во внутреннее отверстие корпуса управляющие каналы соединены с поворотным золотником, который на своей наружной поверхности имеет две системы ограниченных в осевом направлении распределительных ...

Hydraulic pump inner gearwheel type - has several peripherally distributed outlet apertures closed by plate spring-type outlet valve

Where the pump works at high pressure, involving very frequent movements of the plate spring valves (40), a long working life of the latter is achieved by the valve closure surface being may times larger than the cross-section of the outlet aperture. The springs (40) are fixed by tongues (38) and projections (42) to a ring (5) which is tightly enclosed by the pump outlet housing . They extend parallel to the ring over a part of the periphery of the outlet housing. The ring is meander or zigzag-shaped, and the springs extend in a peripheral direction in one of the bulges formed by the ring. USE/ADVANTAGE - As a plate spring outlet valve for a hydraulic pump which has a working life or more than 1000 hours, even where the pump works at high pressure.

Pressure pump for motor vehicle power steering

The pump has a casing (1) with a rotor (3) and a ring (4) with a drive plate (5). The latter define working chambers with control plates (8,9) and a by-pass flow control valve (11) with a piston (11A) for regulation of a working stream. The throttle of the valve has a shutter (12) with a cross sectional face increased with a rise in the shutter pressure. The piston is moved against a spring (15) through a pressure exerted on the shutter, so that the cross sectional surface of the shutter is dependent on the pressure variation.

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.

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.

Pumpeneinheit für eine Zapfwelle, Zapfwelle für ein Zapfwellenmodul und ein Fahrzeug mit einer Zapfwelle

Die Erfindung betrifft eine Pumpenvorrichtung (22) für eine Zapfwelle (16) in einem Fahrzeug (1), das einen Fluideinlass (32); einen Fluidauslass (34); einen Rotor (40) umfasst, der mit dem Fluideinlass (32) und dem Fluidauslass (34) verbunden ist, der auf einem Antriebselement (20) angeordnet ist; einen Stator (42), der mit dem Rotor (40) zusammenwirkt und innerhalb eines Gehäuses (18) angeordnet ist. Ein verlagerbares und umkonfigurierbares Schaltelement (54) wirkt in einem ersten Status mit dem Rotor (40) und dem Stator (42) zusammen, sodass im Wesentlichen kein Fluidstrom durch die Pumpenvorrichtung (22) erzeugt wird, und liegt in einem zweiten Status gegen den Stator (42) und den Rotor (40) an, sodass ein Fluidstrom durch die Pumpenvorrichtung (22) erzeugt wird. Die Erfindung betrifft auch eine Zapfwelle (16) für ein Zapfwellenmodul (14), ein Zapfwellenmodul (14) und ein Fahrzeug (1), das eine Zapfwelle (16) umfasst.

Drehkolbenpumpe

Drehkolbenpumpe mit einem Gehäuse (10), einem Ringkolben (18) in Form eines Rohrabschnittes, der mit einer in dem Gehäuse (10) drehbaren Welle (22) drehfest verbunden und in einem zu der Welle (22) co-axialen Ringraum (28, 30) des Gehäuses drehbar und axial verschiebbar geführt ist, wobei die einander zugekehrten axialen Endflächen (26, 24) des Ringraumes (28, 30) und des Ringkolbens (18) als Wellenflächen mit achsparalleler Amplitude und mit mindestens einem Wellenberg und einem Wellental ausgebildet sind, und mit jeweils mindestens einem Einlass- und einem Auslasskanal, in dem Gehäuse (10) so ausgebildet sind, daß die ringraumseitige Einlaß- bzw. Auslaßöffnung (40, 56) innerhalb eines axialen Bereichs einer Ringraummantelfläche liegen, der durch den maximalen Abstand der einander zugewandten Endflächen (24, 26) bestimmt wird, dadurch gekennzeichnet, dass in der Wellenfläche (F) des Ringkolbens (18) im Bereich des Scheitelpunktes eines Wellenberges ein über die Wellenfläche (F) hinausragender ...

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.

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

Zahnradpumpe mit innenverzahntem Zahnrad

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

Pumpe

HYDRODYNAMISCHE EINSPRITZVORRICHTUNG, INSBESONDERE ZUR VERWENDUNG AN DEM EINLASS EINER PUMPE MIT EINER FESTEN VERDRAENGUNG

Steuervorrichtung für die Fördermenge der Hydraulikpumpe eines Automatikgetriebes

In an automatic transmission, a fixed displacement type pump (50) is connected with a bypass passage (64, 65) through which a part of fluid discharged from a discharge port (56) of the pump flows back to a suction port of the pump. A flow control valve (70) is provided in the bypass passage (64) to regulate the amount of fluid flowing through the bypass according to a feedback pressure Pfb generated in a pressure regulating valve (60) which regulates the delivery pressure Pp of the pump (50) into a specified line pressure Pl. ...

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...

Pumpeneinrichtung

Pumpe mit veraenderlicher Foerdermenge

Hydraulische Drehkolbenmaschine

Pump for a lubricating system of a combustion engine

A pump 1 for a lubricating system 2 of a combustion engine 3 comprises a housing 5 and a lid 7 which together define a pump hollow space 8 in which a pump mechanism 9 for the pumping of lubricant of the lubricating system 2 is arranged and where either the lid or the housing comprises an integrated regulating valve. Preferably the regulating valve is an electromagnetically actuated valve and comprises a valve housing in which an electromagnetic actuation is arranged and a valve body which is displaceable by the actuation device. The lid may comprise a valve hollow space to accommodate the valve body, an output opening and a flange that can be connected to the valve housing via a seal. Preferably the regulating valve is actuated dependent on engine rotational speed of the combustion engine in order to regulate the outlet pressure of the lubricant from the pump. A pump lid is also claimed.

Improvements relating to oil pumps or motors operating on the displacement principle

... 768,933. Rotary pumps and motors. NUBLING, O. May 13, 1955 [May 15, 1954], No. 13924/55. Class 110 (2). A pump or motor of the n and n+ 1 lobe type is provided with a control valve 11 having oil circulation passages 12, 13 and spring-loaded pistons 22, 26 in communication with the valve passages 12, 13 respectively for balancing the pre-compression on the suction side and the pump pressure. The gear 3 is bolted to end plates 4, 5 and the gear 2 is formed integral with a driving shaft 1 which also drives a gear pump 34 for filling purposes through gears 31, 32, 33, the pumps 3, 4 feeding oil through a channel 36 into the passage 12. The valve is controlled by a lever 14 and is provided with a cross channel 19 (see also Fig. 2, not shown). An overflow valve 37 is provided in the gear pump circuit, as shown.

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 ...

Gear pumps

... 1,128,051. Gear pumps. JOSEPH LUCAS (INDUSTRIES) Ltd. Aug.22, 1965 [May 24, 1965], No.21817/65. Heading F1F. To reduce the tendency towards cavitation in a gear pump having a pair of intermeshing gears 12, 13, Fig. 2, with teeth of involute form and inlet and outlet ports 18, 19 respectively, shown shaded, in an end face of the pump body 10, in one or both ends of the gears, there is a hole 20, Fig. 3, for each tooth, preferably at the root thereof, extending from the face of the tooth facing the inlet to the trailing edge of the tooth. This permits entry of liquid to a tooth space which is about to communicate with the inlet and assists filling of this space to eliminate vapour therefrom and thus reduce cavitation.

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.

Hydraulic pump outlet valves

In a hydraulic pump 10 outlet openings 32, distributed on the periphery of pump body 20 are covered by an annular valve band 34, on which tongue-shaped outlet valves 36 surrounded by substantially U-shaped gaps 72 are formed. The pump may be of the inner gear or radial piston type. ...

Hydraulic 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.

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.

Rotary positive-displacement pumps

A rotary slide vane pump for steering booster systems has a flow control valve which bypasses flow from outlet side to suction side with increase in speed as heretofore known. The flow channels or passages that conduct bypass flow change the direction of the flow at a juncture point between passages, such directional change being a right angle, radially downstream from the bypass valve to longitudinally at the point of juncture to the suction side, likewise as heretofore known. In the present invention there is provided a transition piece between the channels at the right angle juncture in the form of a screw in the pump body and having a flat face disposed flush with the longitudinal channel and transversely of the radial channel. The provision of such transition piece has been found to effect an increase in suction pressure when bypass flow is added to normal suction flow, such increase being over and above that effected by the prior art. The result is an enhanced suction volume in pump ...

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 FLUIDMACHINES

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.

Discharge control apparatus for an hydraulic pump for an automatic transmission

POSITIVE DISPLACEMENT PUMP

... 1280447 Rotary positive-displacement pumps FORD MOTOR CO Ltd 4 Dec 1970 [24 Dec 1969] 57675/70 Heading F1F In a double-acting rotary positive displacement pump of the radially outwardly-sliding "slipper" type for a vehicle power-assisted steering system, the pressure fluid output flow to the power steering motor, or servo, (not shown) is by way of a fluid control valve orifice 76 and a pressure control bypass valve 38 carrying a tapered needle valve 90 which on fluid-pressure increase progressively restricts the flow such that the greater the amount of restriction the higher the rate of pressure build-up on the valve 88 side of the orifice 76 to move the valve 88 against a spring 86 restricting the flow from the outlet chamber 70 through the orifice 76 to the net output flow to a passage 78, connected to the pump outlet conduit, at a value determined by the calibration of the needle valve 90, the outlet pressure in passage 78 being determined by the spring 86 because of the action of a ...

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.

Improved rotary constant displacement pump

... 783,770. Rotary pumps. GENERAL MOTORS CORPORATION. Aug. 23, 1956 [Sept. 19, 1955], No. 25769/56. Class 110 (2). A rotary liquid pump 10 is provided with a leak-off point 42, on the discharge side, a by-pass valve 44, which opens at a predetermined pressure in the discharge chamber 34, and a restriction 52 in the by-pass back to the suction chamber 32. The restriction 52 leads to an enlargement 54, where velocity energy is converted to pressure and prevents cavitation in the suction chamber. A rotor 14 is driven by a shaft 16, and outwardly-sliding vanes 20 are forced outwards by centrifugal force and liquid under delivery pressure in the slots 30. Inlet and delivery ports 26, 28 are provided. A reservoir 12 has a slot 74 through which a supply of liquid flows to the chamber 32, to make up that lost through the passage 42. A filter 103, Fig. 3 (not shown) is included in the delivery line from the pump.

PORTABLE HAND-HELD HYDRAULIC TOOL

CAM RING CAMP FOR FUEL SUPPLY SYSTEM

PUMP

WING CELL MACHINE

INTERIOR GEAR PUMP.

SCREW PUMP.

GEAR PUMP

PUMP

A pump

Piston pump for a high-pressure cleaning device

FUEL PUMPING APPARATUS

POWER STEERING PUMP

Vane cell machine

PUMP HAVING DISCHARGE BAFFLE MEANS

REGULATED PUMP

The invention relates to pumps (1), in particular oil pumps for internal combustion engines, comprising a gear- or rotor-assembly, with one each of a pressure- and suction region (7, 5) arranged in a pump housing, which may be sealed from each other, by means of an axially displaceable piston valve (10), which defines a supply chamber (9) and a housing cover (24), closing the pump housing (8). The pressure region (7) comprises a pressure channel, connected to the waist (12) of the control piston (10), whereby the control piston (10) co-operates with a plunger (13) on the end thereof facing the supply chamber (9), which is arranged at right angles to the control piston (10). Said plunger (13) is pre-tensioned against the control piston (10), by means of a pressure spring (14) and said plunger (13) and control piston (10) are connected by means of a sliding surface (15), arranged at an angle to the control piston axis (4).

BLADE SUPPORT IN A QUASITURBINE PUMP

A pump comprises a housing having an inner contour and defining an ovaloidal chamber with a rhomboidal rotor assembly positioned therein and being configured to rotate. The housing includes intake and exhaust ports in communication with the chamber providing for intake of fluid therein and exhaust of fluid therefrom. A movement imparting assembly imparts a rotational movement to the rhomboidal rotor assembly. The rhomboidal rotor assembly comprises four blades, adjoined at four joints comprising rotatable members spaced interposed between two adjacent blades and being spaced therefrom. The pump can be a compressor or and engines and can be used in a variety of fields.

VANE-TYPE ROTARY HYDRAULIC TRANSDUCER

ELECTRICAL COMMUTATION APPARATUS

... of the Invention A fluid motor having a gerotor gear set includes a first member having internal teeth and a second member having external teeth. The second member is rotatably and orbitally mounted within the first member. The teeth of the first and second members cooperate to define a plurality of variable volume working chambers. Some of said working chambers expand and other of said working chambers contract upon relative rotatable and orbital movement between said first and second members. A plurality of electrically controlled valves are provided, each working chamber having an associated valve. Each valve selectively communicates, in one condition, its associated working chamber with an inlet passage, which is, in turn, connected to a source of pressurized fluid, or, in a second condition, its associated working chamber to an outlet passage, which is, in turn, connected to a reservoir. Each of the valves is responsive to a respective electrical control signal for placing the valve ...

ROTARY FLUID PUMP

PUMP ASSEMBLY

FLUID POWER TRANSFER DEVICE

A fluid power transfer device (20) includes a wobble plate assembly (26) having a wobble plate (58) that rolls against truncated cone portions (42) of a housing (22) and has an inner extremity 60) rotatably supported by an axially inclined annular bearing (49), 49') on a spherical member (46) of the wobble plate assembly so as to rotate a shaft (24) during the wobbling motion. One embodiment includes a journal bearing (49) and an oil lubrication system (114) and another embodiment includes antifriction roller bearings (220) that support the wobble plate (58) on the spherical member (46), antifriction roller bearings (224) that rotatively support the shaft (24) on the housing (22') and seals (226) that rotatively seal between the shaft (24) and the housing (22'). The fluid power transfer device can be used as an internal combustion engine, a heat engine, a pump, a compressor or a fluid motor.

STACK-UP PUMP ASSEMBLY

A PUMP WITH A MOTOR FOR PUMPING FLUIDS

... ²²²A pump is disclosed which has a housing with a upper end and a lower end. A ²conduit is defined through the housing between the upper and the lower ends. ²The pump includes an fluid displacer within the housing, an inlet from the ²conduit to the fluid displacer and an outlet from the fluid displacer. ²Portions of the fluid displacer may be distributed around the conduit. The ²pump may also include a motor coupled to the fluid displacer. Portions of ²motor may also be distributed around the conduit. The outlet from the fluid ²displacer may be independent of the conduit.² ...

SYSTEM FOR THERMALLY CONTROLLING A SOLID FEED PUMP

According to various embodiments, a system includes a solid feed pump. The solid feed pump includes a housing, a rotor disposed in the housing, a curved passage disposed between the rotor and the housing, an inlet coupled to the curved passage, an outlet coupled to the curved passage, a solid feed guide extending across the curved passage, and a thermal control path through a portion of the solid feed pump.

MOTOR-DRIVEN HYDRAULIC PUMP AND DRIVING COUPLER USED IN THE SAME

A motor-driven hydraulic pump for use in motor vehicles and a driving coupler used therein, in which the pump includes a driving gear and a follower gear, an intake chamber and an outlet chamber formed on opposite sides of the meshed gears, a housing for enclosing the intake chamber and the outlet chamber, the housing being supported by a first support on one side and a second support on the other side, and a noise damper including a space inside for reducing noise occurring the delivery of a working oil, the noise damper communicating with the outlet chamber and being fixed to the second support of the housing, and wherein the driving coupler includes a protruding, undulated sleeve including a mortise mating with a tenon formed on the end of either the driving shaft or the driven shaft, and a sleeve counterpart including a mortise mating with a tenon formed on the end of the other shaft, and a protruding, splined projection which includes splines shaped to fit into the undulated sleeve ...

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

Flüssigkeitspumpe, insbesondere Heizölpumpe

Pumpe

Speiseanlage zur Versorgung mehrerer Verbraucherstellen

Pumpvorrichtung

Zahnradpumpe mit keilförmig verjüngten Einzugskammern

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

Rotations-Pumpe

Rotations-Pumpe

Flüssigkeitspumpe, insbesondere Heizölpumpe

Pumpvorrichtung

Zahnradpumpe

Zahnradpumpe, insbesondere Schmelzepumpe

OIL PUMP, IN PARTICULAR LUBRICATING OIL PUMP FOR TURBOMACHINES.

ELEVATION AND STEERING METERING PUMP.

GEAR 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.

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.

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.

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 ).

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.

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 ...

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 ...

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 ...

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 ...

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 , ...

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 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 ...

Vane Pump

A vane pump has a pump flange, a cam ring, a pressure plate and at least one pin extending axially through the pump flange, the cam ring and the pressure plate, the pin being preloaded in an axial direction thereof by means of at least one spring element. 1. A vane pump having a pump flange , a cam ring , a pressure plate as well as at least one pin extending axially through the pump flange , the cam ring and the pressure plate , the pin being preloaded in an axial direction thereof by means of at least one spring element.2. The vane pump according to claim 1 , wherein the pin has a pin flange claim 1 , and the spring element is disposed between the pin flange and the pump flange or the pressure plate.3. The vane pump according to claim 1 , wherein the spring element is a disc spring or cup spring.4. The vane pump according to claim 1 , wherein one end of a pump shaft is enclosed by the pressure plate.5. The vane pump according to claim 1 , wherein at least one pin is sealed by means of a soft seal. This application claims the benefit and priority of German Patent Application No. 102019120290.6, filed Jul. 26, 2019 and German Patent Application No. 102019215933.8, filed on Oct. 16, 2019. The entire disclosures of each of the above applications are incorporated herein by reference.The invention relates to a vane pump, which can be switchable and can be used as a transmission oil pump, which is preferably switchable.The parts of such a pump must be mechanically preloaded in an axial direction to avoid gaps between the parts which lead to an embedding of the cam ring into the end plates during operation. The pump cartridge must also be held together for assembly, disassembly and transport to avoid gaps between the parts of the pump (the gaps are caused by the clearance of the parts as long as the parts are not pressed against each other).In certain situations, insufficient installation space prohibits the use of existing solutions. Furthermore, the pump parts can ...

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 ...

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.

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 ...

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 ...

ROTARY PUMP WITH AXIAL COMPENSATION, OUTLET GASKET FOR A PUMP AND PRE-FITTED PUMP UNIT

An outlet gasket which has a gasket structure made of a gasket material, for sealing off a first pressure outlet and a second pressure outlet of a pump, the gasket structure including: a first sealing stay which circumferentially encloses a first fluid passage of the outlet gasket, provided for the first pressure outlet, in a seal in an axial plan view onto the outlet gasket; and a second sealing stay which circumferentially encloses a second fluid passage of the outlet gasket, provided for the second pressure outlet and located laterally next to the first fluid passage, in a seal in the plan view, wherein the gasket structure forms the sealing stays contiguously as a unit, and/or the outlet gasket includes a support structure on which the sealing stays are arranged. 115.-. (canceled)16. An outlet gasket which has a gasket structure made of a gasket material , for sealing off a first pressure outlet and a second pressure outlet of a pump and separating the first pressure outlet from the second pressure outlet , the gasket structure comprising:a first sealing stay which circumferentially encloses a first fluid passage of the outlet gasket, provided for the first pressure outlet, in a seal in an axial plan view onto the outlet gasket; anda second sealing stay which circumferentially encloses a second fluid passage of the outlet gasket, provided for the second pressure outlet and located laterally next to the first fluid passage, in a seal in the plan view,wherein the gasket structure forms the sealing stays contiguously as a unit, and/or the outlet gasket comprises a support structure on which the sealing stays are arranged.17. The outlet gasket according to claim 16 , wherein the first sealing stay and the second sealing stay are each D-shaped in the plan view claim 16 , each have a flat stay portion and a stay portion which bulges out from the flat stay portion claim 16 , and face each other via their flat stay portions claim 16 , wherein the flat stay portions can ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

MULTIPLE LOBE VANE FLUID PUMP HAVING ENHANCED UNDER-VANE CAVITY PRESSURIZATION

A multiple lobe vane fluid pump having enhanced under-vane cavity pressurization for cold start priming includes a pressure plate having a first flow passage and a second flow passage, the first flow passage being configured to allow fluid flow between a primary under-vane cavity and a primary discharge port, the second flow passage being configured to allow fluid flow between the primary discharge port and a secondary under-vane cavity. Additionally, the pump includes a thrust plate including the primary under-vane cavity, a first adjacent under-vane cavity having one open end in fluid communication with a first end on the primary under-vane cavity, and a second adjacent under-vane cavity having one open end in fluid communication with a second end of the primary under-vane cavity. 1. A multiple lobe vane fluid pump having enhanced under-vane cavity pressurization for cold start priming comprising:a pressure plate having a first flow passage and a second flow passage, the first flow passage being configured to allow fluid flow between a primary under-vane cavity and a primary discharge port, the second flow passage being configured to allow fluid flow between the primary discharge port and a secondary under-vane cavity; anda thrust plate including the primary under-vane cavity, a first adjacent under-vane cavity having one open end in fluid communication with a first end of the primary under-vane cavity, and a second adjacent under-vane cavity having one open end in fluid communication with a second end of the primary under-vane cavity.2. The pump of further comprising each of the first and second adjacent under-vane cavities being aligned with inward radial vane motion caused by a multiple lobe cam profile during rotor rotation.3. The pump of wherein the first flow passage is configured to be a predetermined smaller size than the second flow passage.4. The pump of wherein the first flow passage is less than half the size of the second flow passage.5. The pump of ...

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 ...

BIDIRECTIONALLY FLOW-IMPINGED DEVICE FOR MEASURING FLOW PROCESSES OF FLUIDS

A device for measuring flow processes of fluids includes an inlet, an outlet, a housing, a drivable positive displacement flow meter arranged in the housing, the displacement flow meter including a positive displacement chamber formed therein in which at least one driven impeller is rotatably arranged, a first supply duct fluidically connecting the displacement chamber with the inlet, a first discharge duct fluidically connecting the displacement chamber with the outlet, a first inlet port via which the first supply duct opens into a front of the displacement chamber, a second supply duct fluidically connected to the inlet, a displacement flow meter bypass with a differential pressure sensor arranged therein, and an evaluation and control unit which controls the displacement flow meter based on a differential pressure applied to the pressure sensor. The second supply duct opens into a rear of the displacement chamber via a second inlet port. 112-. (canceled)13. A device for measuring flow processes of fluids , the device comprising:an inlet;an outlet;a housing;a drivable positive displacement flow meter arranged in the housing, the drivable positive displacement flow meter comprising a positive displacement chamber formed therein in which at least one driven impeller is rotatably arranged;a first supply duct fluidically connecting the positive displacement chamber with the inlet;a first discharge duct fluidically connecting the positive displacement chamber with the outlet;a first inlet port via which the first supply duct is configured to open into a front of the positive displacement chamber;a second inlet port;a second supply duct fluidically connected to the inlet, the second supply duct being configured to open into a rear of the positive displacement chamber via the second inlet port;a bypass configured to bypass the drivable positive displacement flow meter;a differential pressure sensor arranged in the bypass; andan evaluation and control unit configured to ...

PUMP SLEEVE FOR INTEGRATED DRIVE GENERATOR

A pump sleeve for an inversion pump in an integrated drive generator has a pump sleeve body extending between a first end and a second end, the first end being at a location adjacent an enlarged endplate. The body extends to the second end with a generally cylindrical body portion having a bore of an inner diameter from the first end to the second end, and between the first and second ends for a distance. A ratio of the first distance to the inner diameter being is 1.8 and 2.0. In addition, an integrated drive generator is disclosed as is a method of replacing an accessory drive gear in an integrated drive generator. 1. A pump sleeve for an inversion pump in an integrated drive generator comprising:a pump sleeve body extending between a first end and a second end, said first end being at a location adjacent an enlarged endplate, and said body extending to said second end with a generally cylindrical body portion having a bore of an inner diameter from said first end to said second end, and extending between said first and second ends for a first distance, and a ratio of said first distance to said inner diameter being between 1.8 and 2.0.2. The pump sleeve for an inversion pump as set forth in claim 1 , wherein said pump sleeve having two circumferentially spaced windows to provide fluid ports claim 1 , and each of said windows extending for a second distance measured parallel to a central axis of said cylindrical portion claim 1 , and a ratio of said second distance to said inner diameter being between 0.5 and 0.7.3. The pump sleeve for an inversion pump as set forth in claim 2 , wherein a ratio of said first distance to said second distance being between 0.25 and 0.39.4. The pump sleeve for an inversion pump as set forth in claim 3 , wherein said windows extend between two circumferential ends and one of said windows extending for between 90 and 110 degrees in said circumferential distance and a second of said windows extending for between 99 and 119 degrees in ...

VARIABLE DISPLACEMENT PUMP AND CONTROL METHOD THEREFOR

The present invention provides a variable displacement pump capable of improving controllability. A variable displacement pump includes a pump forming member, a movable member, a biasing member, a first control chamber, a second control chamber, and a control mechanism. The first control chamber is provided between an inner periphery of a containing chamber of a housing and an outer periphery of the movable member. Hydraulic oil is introduced from a discharge port into the first control chamber. The first control chamber has a volume that increases when the movable member moves in a direction counteracting a biasing force of the biasing member. The second control chamber is provided between the inner periphery of the containing chamber and the outer periphery of the movable member. The hydraulic oil is able to be introduced from the discharge port into the second control chamber via a supply/discharge passage or is able to be discharged from inside the second control chamber. The second control chamber has a volume that increases when the movable member moves in the same direction as the biasing force of the biasing member. The second control chamber is located adjacent to any of pump chambers in a discharge region or the discharge port via the movable member. The control mechanism can switch a state in which the second control chamber is opened to the supply/discharge passage and a state in which the second control chamber is closed to the supply/discharge passage. 1. A variable displacement pump configured to supply hydraulic oil , the variable displacement pump comprising:a housing including a containing chamber, a discharge port, and an intake port therein;a pump forming member provided in the containing chamber, the pump forming member being configured to suck the hydraulic oil from the intake port and discharge the hydraulic oil to the discharge port by being rotationally driven;a movable member provided in the containing chamber, the movable member defining a ...

PUMP

The present invention is directed to providing a pump capable of achieving improvement of a discharge efficiency. A pump configured to suck and discharge fluid includes a housing, a driving shaft rotatably supported on the housing, and a pump element contained in the housing and configured to be rotated by the driving shaft. The housing contains therein an intake passage into which the fluid delivered from outside the housing is introduced, an intake port configured to guide the fluid from the intake passage to the pump element, a discharge port into which the fluid pressurized by the pump element is introduced, and a discharge passage configured to discharge the fluid delivered from the discharge port to outside the housing. The discharge passage includes a first passage including a beginning portion connected to the discharge port and a termination portion. The first passage extends as far as the termination portion around one straight line. The discharge passage further includes a second passage connected to the termination portion of the first passage and opened to outside the housing. A shape of the first passage in cross section taken along a direction perpendicular to the straight line changes continuously from the beginning portion to the termination portion. 1. A pump configured to suck and discharge fluid , the pump comprising:a housing;a driving shaft rotatably supported on the housing; anda pump element contained in the housing and configured to be rotated by the driving shaft,wherein the housing contains thereinan intake passage to which the fluid is introduced from outside the housing,an intake port configured to guide the fluid from the intake passage to the pump element,a discharge port to which the fluid is introduced after being pressurized by the pump element, anda discharge passage configured to discharge the fluid delivered from the discharge port to outside the housing,wherein the discharge passage includesa first passage including a beginning ...

Refrigerant Compressor and Refrigeration Cycle Device

A refrigerant compressor () includes: a sealed vessel (); a compression mechanism () that sucks refrigerant, sucked in the sealed vessel (), for compression; a motor () that drives the compression mechanism (); a suction pipe () for sucking the refrigerant into the sealed vessel () when sucking the refrigerant; a cover () arranged to face an outlet of the suction pipe (), to force the refrigerant sucked through the suction pipe () to collide against the cover for gas-liquid separation, and to allow liquid refrigerant from the separation to drop on a coil () of the motor (); and a suction passage () that introduces gas refrigerant from the gas-liquid separation, for which the refrigerant sucked through the suction pipe is forced to collide against the cover (), to an inlet of the compression chamber provided in the compression mechanism (). Thus, a decrease in density of the refrigerant to be compressed, sucked into the sealed vessel (), can be prevented to prevent a decrease in refrigeration capacity, and the temperature of the motor () can be lowered to improve a motor efficiency. 1. A refrigerant compressor comprising:a sealed vessel;a compression mechanism that is housed in the sealed vessel and, after refrigerant is sucked into the sealed vessel, sucks the refrigerant in the sealed vessel for compression;a motor that is housed in the sealed vessel and drives the compression mechanism;a suction pipe for sucking the refrigerant into the sealed vessel;a cover that is arranged to face an outlet of the suction pipe, to force the refrigerant sucked through the suction pipe to collide against the cover for gas-liquid separation, and to allow liquid refrigerant to drop on a coil of the motor; anda suction passage that, after the refrigerant sucked through the suction pipe is forced to collide against the cover for the gas-liquid separation, introduces gas refrigerant to an inlet of the compression chamber provided in the compression mechanism.2. The refrigerant ...

VANE-TYPE HYDRAULIC DEVICE

A vane pump () includes: a front side vane case (), a rear side vane case (), a pump housing (), a pump cover (), a drive shaft (), a rotationally driven rotor (), and vanes () provided in slot sections (), wherein engaging groove sections and guide protrusions (), which engaging one another, are provided in the vanes (), the front side vane case () and the rear side vane case (), the engaging groove sections and guide protrusions () are composed in such a manner that the vanes () move following a proximal inner peripheral surface () in a state where the vane is proximate to the proximal inner peripheral surface (), in accordance with rotation of the rotor (), and pump chambers are demarcated by the vanes () situated in proximity with the proximal inner peripheral surface (). 17-. (canceled)8. A vane-type hydraulic device , comprising:a rotor accommodating member provided with a rotor accommodating space;a drive shaft supported by the rotor accommodating member;a rotor provided with a slot section formed to extend in a radial direction of the rotor, the rotor being disposed inside the rotor accommodating space and being driven to rotate about the drive shaft by the drive shaft; anda vane provided retractably in the radial direction in the slot section,wherein the vane and the rotor accommodating member are provided with engaging sections which engage with one another; andthe engaging sections are composed so as to cause the vane to move following the inner peripheral surface of the rotor accommodating member in a state where the vane is proximate to the inner peripheral surface of the rotor accommodating member, in accordance with rotation of the rotor, as well as to demarcate a pump chamber by the vane which is in proximity to the inner peripheral surface of the rotor accommodating member.9. The vane-type hydraulic device according to claim 8 ,wherein the rotor accommodating member is composed by:a vane case provided with the rotor accommodating space; anda case ...

DRIVE APPARATUS

A drive apparatus to be mounted on a vehicle includes a motor body including a rotor to rotate about a central axis extending in a horizontal direction perpendicular to a direction of travel of the vehicle, and a stator radially outside of the rotor, a housing including a housing portion to house the motor body, oil in a vertically lower region of the housing portion, and a pump to move the oil from the vertically lower region of the housing portion to feed the oil to the motor body. A liquid surface of the oil in the vertically lower region of the housing portion approaches the central axis to bring the oil into contact with the rotor as a result of the vehicle being inclined forward or rearward in the direction of travel. 17-. (canceled)8. A drive apparatus to be mounted on a vehicle , the drive apparatus comprising:a motor body including a rotor to rotate about a central axis extending in a horizontal direction perpendicular to a direction of travel of the vehicle, and a stator radially outside of the rotor;a housing including a housing portion to house the motor body;oil in a vertically lower region of the housing portion; anda pump to move the oil from the vertically lower region of the housing portion to feed the oil to the motor body; whereina liquid surface of the oil in the vertically lower region of the housing portion approaches the central axis to bring the oil into contact with the rotor as a result of the vehicle being inclined forward or rearward in the direction of travel.9. The drive apparatus according to claim 8 , whereinan inner circumferential surface of the housing surrounds the motor body on a radially outer side thereof and extends along the stator;the inner circumferential surface includes a lateral wall recessed portion recessed radially outward and located lower than a lower end of the rotor; andthe lateral wall recessed portion is structured to move upward in a vertical direction to cause the liquid surface of the oil to move lower than ...

Gear Pump That Removes Air From Pumped Oil

A gear pump can be equipped in an engine oil system. The gear pump has a housing, a first gear, and a second gear. The housing has an outlet passage for exiting oil, and has one or more outlet openings for exiting air. The first gear has a set of first teeth with multiple first roots and first tips. The second gear has a set of second teeth with multiple second roots and second tips. The outlet opening(s) is situated in the housing so that it can communicate with a first clearance, with a second clearance, or with both the first and second clearances. The first clearance is established at the confrontation of one of the first roots and one of the second tips. And the second clearance is established at the confrontation of one of the second roots and one of the first tips. 1. A gear pump , comprising:a housing having an outlet passage for oil to exit the gear pump, the housing having at least one outlet opening for air to exit the gear pump;a first gear disposed within the housing, the first gear having a set of first teeth with a plurality of first roots and a plurality of first tips; anda second gear disposed within the housing, the second gear having a set of second teeth with a plurality of second roots and a plurality of second tips;wherein the at least one outlet opening is situated at a location in the housing to communicate with a first clearance established between a confronting first root and second tip, or with a second clearance established between a confronting second root and first tip, or with both the first clearance and the second clearance upon respective establishment thereof.2. The gear pump of claim 1 , wherein the at least one outlet opening is situated at a timing rib of the housing claim 1 , the timing rib being interposed between a vacuum side of the gear pump and a pressure side of the gear pump.3. The gear pump of claim 1 , wherein the at least one outlet opening is situated adjacent a first tip circumference of the plurality of first tips ...

ELECTRIC PUMP

An electric pump includes a motor unit rotationally driving a drive shaft, and a pump unit. The pump unit includes a pump rotor that sends the fluid by a driving force of the driving shaft, and a pump housing that covers at least one side of the pump rotor. The pump housing includes an attachment surface extending in the axial direction and in contact with an attached body, first and second flow paths respectively on the suction side and the discharge side, and a partition wall positioned between pump-side openings of the first flow path and the second flow path facing the pump rotor, and extends in a direction along the attachment surface, and locations of attachment-side openings of the first flow path and the second flow path on the attachment surface are displaced from each other on the attachment surface in the axial direction. 1. An electric pump comprising:a motor unit that includes a drive shaft, and rotationally drives the drive shaft; anda pump unit that is positioned on one side in an axial direction along the drive shaft with respect to the motor unit, and sucks and discharges a fluid,wherein a pump rotor that sends the fluid from a suction side to a discharge side by rotating by a driving force of the driving shaft, and', 'a pump housing that covers at least the one side of the pump rotor,, 'the pump unit includes'} an attachment surface that extends in the axial direction and is in contact with an attached body,', 'a first flow path and a second flow path in which the fluid flows, one flow path is on the suction side, and the other flow path is on the discharge side, and', 'a partition wall that is positioned between pump-side openings of the first flow path and the second flow path facing the pump rotor, and extends in a direction along the attachment surface, and, 'the pump housing includes'}locations of attachment-side openings of the first flow path and the second flow path on the attachment surface are displaced from each other on the attachment ...

VANE PUMP DEVICE

An embodiment provides an inner plate including a high pressure side discharge through-hole through which a working fluid is discharged from a pump chamber; an inner-plate high pressure side through-hole through which the working fluid is guided to a columnar groove of a vane groove; and an inner-plate high pressure side recess portion that is a groove facing a columnar groove among multiple columnar grooves. An outer plate includes a high pressure side upstream recess portion; a high pressure side downstream recess portion; and a high pressure side connection recess portion through which the high pressure side upstream recess portion and the high pressure side downstream recess portion are connected to each other, and which has a passage area smaller than that of the high pressure side downstream recess portion. 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 radial direction of rotation such that the vanes are supported in such a way as to be capable of moving in the radial direction of rotation, 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;a one side member that is disposed on one end portion side of the cam ring in a direction of a rotation axis to cover an opening of the cam ring; andanother side member that is disposed on another end portion side of the cam ring in the direction of the rotation axis to cover an opening of the cam ring, a one side first through-hole through which a working fluid is discharged from a pump chamber,', 'a one side second through-hole through which the working fluid discharged from the one side first through-hole is guided to a center side space that is a space of a vane groove which is positioned at a rotation center side, and', 'a one side groove ...

VANE PUMP DEVICE

An embodiment provides a vane pump device including a pump unit that includes a high pressure side discharge through-hole which discharges oil, and a low pressure side discharge through-hole which discharges oil; and a housing which accommodates the pump unit, and includes a high pressure side discharge passage that is formed between the high pressure side discharge through-hole and a high pressure side discharge outlet through which oil discharged from the high pressure side discharge through-hole of the pump unit is discharged to the outside, and a cover low pressure side discharge passage and a case low pressure side discharge passage that are formed between the low pressure side discharge through-hole and a low pressure side discharge outlet through which oil is discharged to the outside, and that are shorter than the high pressure side discharge passage. 1. A vane pump device comprising: a first discharge portion which discharges a working fluid of a first amount, and', 'a second discharge portion which discharges the working fluid of a second amount larger than the first amount; and, 'a pump unit that includes'} a first passage which is formed between the first discharge portion and a first discharge outlet through which the working fluid discharged from the first discharge portion of the pump unit is discharged to the outside, and', 'a second passage that is formed between the second discharge portion and a second discharge outlet through which the working fluid discharged from the second discharge portion is discharged to the outside, and that is shorter than the first passage., 'a housing that accommodates the pump unit, and includes'}2. The vane pump device according to claim 1 ,wherein the second discharge portion of the pump unit is positioned closer to the second discharge outlet than the first discharge outlet.3. The vane pump device according to claim 1 ,wherein a direction in which the working fluid is discharged to the outside from the first ...

VANE PUMP DEVICE

An embodiment provides a vane pump device includes a pump unit that includes a high pressure side discharge through-hole which discharges oil at a first discharge pressure, and a low pressure side discharge through-hole which discharges oil at a second discharge pressure lower than the first discharge pressure; and a housing which accommodates the pump unit, and includes a high pressure side discharge outlet through which oil discharged from the high pressure side discharge through-hole of the pump unit is discharged to the outside, and a low pressure side discharge outlet through which oil discharged from the low pressure side discharge through-hole is discharged to the outside, and in which the high pressure side discharge outlet and the low pressure side discharge outlet are formed to face the same direction. 1. A vane pump device comprising: a first discharge portion which discharges a working fluid at a first discharge pressure, and', 'a second discharge portion which discharges the working fluid at a second discharge pressure lower than the first discharge pressure; and, 'a pump unit that includes'} a first discharge outlet through which the working fluid discharged from the first discharge portion of the pump unit is discharged to the outside, and', 'a second discharge outlet through which the working fluid discharged from the second discharge portion is discharged to the outside, wherein the first discharge outlet and the second discharge outlet are formed to face the same direction., 'a housing which accommodates the pump unit, and includes'}2. The vane pump device according to claim 1 , wherein a suction inlet through which the working fluid is suctioned into the pump unit is formed in the housing to face the same direction as the direction of the first discharge outlet and the second discharge outlet.3. The vane pump device according to claim 2 , a bottomed cylindrical case, and', 'a cover covering an opening of the case, and, 'wherein the housing ...

VANE PUMP DEVICE

An embodiment provides a vane pump device includes multiple vanes; a rotor that includes vane grooves which support the vanes so that the vanes can move in a radial direction of rotation and which form columnar grooves accommodating oil on a rotation center side, and that rotates due to a rotating force received from a rotation shaft; a cam ring that includes an inner circumferential surface facing an outer circumferential surface of the rotor, and surrounds the rotor; and an inner plate that covers an opening of the cam ring. The inner plate includes a first recess portion that supplies low pressure oil to the columnar grooves, a second recess portion that is formed away from the first recess portion, and supplies high pressure oil to the columnar grooves, and an inner-plate first groove connected to the first recess portion and the second recess portion. 1. A vane pump device comprising:multiple vanes;a rotor that includes vane grooves which support the vanes so that the vanes can move in a radial direction of rotation and which form center side spaces accommodating a working fluid on a rotation center side, and that rotates due to a rotating force received from a rotation shaft;a cam ring that includes an inner circumferential surface facing an outer circumferential surface of the rotor, and surrounds the rotor; anda cover portion that is positioned on one end portion side of the cam ring in a direction of a rotation axis, and covers an opening of the cam ring, wherein a first supply portion that supplies the working fluid to the center side spaces at a first pressure,', 'a second supply portion that is formed away from the first supply portion, and supplies the working fluid to the center side spaces at a second pressure different from the first pressure, and', 'a groove portion having a groove shape and being connected to the first supply portion and the second supply portion., 'the cover portion includes'}2. The vane pump device according to claim 1 , wherein ...

PUMP DEVICE

The pump device includes a motor portion that includes a shaft rotating about a central axis and a pump portion that is driven by a motor portion via the shaft. The pump portion includes a pump rotor that rotates along with the shaft and a pump housing that includes an accommodation portion that accommodates the pump rotor. The pump housing includes a pump body that includes a first bearing portion that supports the shaft and a pump cover with an accommodation portion disposed between the pump cover and the pump body. The pump cover includes a flow path through which oil is discharged and suctioned, and includes a second bearing portion that rotatably supports the shaft and that communicates with the flow path. An end portion of the shaft on one side in the axial direction is disposed at the second bearing portion or inside the flow path. 112-. (canceled)13: A pump device comprising:a motor portion that includes a shaft rotating about a central axis extending in an axial direction; anda pump portion that is located on one side of the motor portion in the axial direction and that is driven by the motor portion via the shaft to eject oil, wherein a pump rotor that rotates along with the shaft extending from the motor portion, and', 'a pump housing that includes an accommodation portion that accommodates the pump rotor,, 'the pump portion includes a pump body that includes a first bearing portion rotatably supporting the shaft, and', 'a pump cover that covers the pump body on one side in the axial direction such that the accommodation portion is disposed between the pump cover and the pump body,, 'the pump housing includesthe pump cover includes a flow path through which the oil is discharged and suctioned,the pump cover includes a second bearing portion that rotatably supports the shaft and communicates with the flow path, andan end portion of the shaft on one side in the axial direction is disposed at the second bearing portion or inside the flow path.14: The pump ...

Improved stator assembly for progressive cavity pumping systems

A stator for use in a progressive cavity pump is provided, comprising a housing having a suction end and a discharge end, and an elastomeric liner disposed within the housing that defines a passageway for receiving a rotor of the pump. The elastomeric liner comprises a reinforced component that is proximate to the discharge end and that provides a landing surface to resist passage of a rotor head through the passageway.

DISTRIBUTOR APPARATUS WITH A PAIR OF INTERMESHING SCREW ROTORS

A distributor apparatus for distributing a plurality of portions or streams of a flowable material. The apparatus comprises an enclosure which locates rotors An inlet port is provided in an upper part of the enclosure, which connects to a manifold with five spaced inlets through which material can pass to drive the rotors Material can pass round the rotors to a plurality of spaced outlets for discharging to and from the apparatus 1. A distributor apparatus , the apparatus comprising:a pair of adjacent inter engaging rotors such that rotation of one rotor causes or requires rotation of the other rotor in an opposite direction, each rotor comprising a hub with a plurality of lobes extending outwardly therefrom, the rotors being configured such that by virtue of the lobes there is no line of sight between the adjacent inter engaging rotors;an inlet at least generally adjacent to the inter engagement of the rotors such that material entering through the inlet engages with the rotors and is then carried round with the rotors to move in a direction away from the inter engagement of the rotors, the material being located between adjacent lobes on the rotors; andan outlet being provided substantially on an opposite side of the rotors from the inlet to receive material after being carried with the rotors.2. The distributor apparatus according to claim 1 , wherein the rotors are configured so as to substantially contact each other.3. The distributor apparatus according to claim 2 , wherein the rotors contact each other along a line of contact.4. The distributor apparatus according to claim 1 , wherein the inter engaging rotors are parallel to each other.5. The distributor apparatus according to claim 1 , further comprising a plurality of spaced inlets.6. The distributor apparatus according to claim 5 , further comprising a manifold for receiving material claim 5 , and wherein the inlets extend from the manifold.7. The distributor apparatus according to claim 1 , further ...

TROCHOID PUMP WITH AIR EJECTION PORT

An air ejection port for ejecting air-mixed oil is structured with a first air ejection port provided on the inner peripheral side from an inscribed circle of an outer rotor and a second air ejection port provided on the outer peripheral side from a circumscribed circle of the inner rotor, the air ejection port can have an enlarged port area as the total of area of the first air ejection port and area of the second air ejection port in a state without being in communication with either of a suction port and a discharge port, and a disadvantage that a pump chamber of a previous stroke and a pump chamber of a subsequent stroke communicate with each other through the air ejection port can be avoided. 1. A trochoid pump with an air ejection port , comprising:a casing;an outer rotor, rotatably arranged in the casing; andan inner rotor, rotatably arranged inside the outer rotor to perform sucking and pressure-feeding of an oil in cooperation with the outer rotor;wherein the casing including: a suction port through which the oil is sucked in a sucking stroke, an air ejection port through which a part of air-mixed oil is ejected in an air ejecting stroke subsequent to the sucking stroke, and a discharge port through which the oil is discharged in a discharging stroke subsequent to the air ejecting stroke;the air ejection port including: a first air ejection port provided on an inner peripheral side from an inscribed circle of the outer rotor, and a second air ejection port provided on an outer peripheral side from a circumscribed circle of the inner rotor.2. The trochoid pump with an air ejection port according to claim 1 , whereinthe second air ejection port is arranged at a position close to the circumscribed circle of the inner rotor on the outer peripheral side from the circumscribed circle. The present invention relates to a trochoid pump with an air ejection port, and in particular, relates to a trochoid pump with an air ejection port preferably used as a trochoid ...

HYDRAULICALLY BALANCED STEPWISE VARIABLE DISPLACEMENT VANE PUMP

A binary vane pump providing a balanced, stepwise variable displacement is provided. The binary vane pump includes a pressure plate having first and second discharge ports configured to discharge fluid from the binary vane pump to a first discharge path and a thrust plate having third and fourth discharge ports configured to discharge fluid from the binary vane pump to a second discharge path. The binary vane pump also includes a ring positioned axially between the pressure plate and thrust plate, the ring having an inner cam surface, a rotor rotatably disposed within the ring, the rotor having a plurality of slots and a plurality of vanes received and movable within respective slots, and a shaft extending along an axis through the rotor and configured to rotate the rotor so that the vanes are rotatable within the ring. 1. A binary vane pump comprising:a pressure plate including a first discharge port and a second discharge port configured to discharge fluid from the binary vane pump to a first discharge path;a thrust plate including a third discharge port and a fourth discharge port configured to discharge fluid from the binary vane pump to a second discharge path;a ring positioned axially between the pressure plate and thrust plate, the ring having an inner cam surface;a rotor rotatably disposed within the ring, the rotor comprising a plurality of slots and a plurality of vanes, vanes of the plurality vanes corresponding to respective slots of the plurality of slots and radially movable with the respective slots; anda shaft extending along an axis through the rotor and configured to rotate the rotor so the vanes are rotatable within the ring.2. The binary vane pump of claim 1 , wherein the ring defines an elongated main chamber having a minor diameter and a major diameter.3. The binary vane pump of claim 2 , wherein the rotor and vanes are positioned within the ring to divide the main chamber into a first pumping chamber at one side of the minor axis and a second ...

VANE PUMP DEVICE

An embodiment provides a vane pump device. In the vane pump device, vane grooves of a rotor include columnar grooves which accommodate oil, and support the vanes. An inner-plate low pressure side recess portion and an inner-plate high pressure supply region are provided along a rotation direction of the rotor. The inner-plate low pressure side recess portion supplies oil to the columnar grooves at a first pressure, and the inner-plate high pressure supply region supplies oil at a second pressure higher than the first pressure. A size from an inner-plate low pressure side recess portion downstream end to an inner-plate high pressure side through-hole upstream end in the rotation direction is different from that from an inner-plate high pressure side recess portion downstream end to an inner-plate low pressure side recess portion upstream end in the rotation direction. 1. A vane pump device comprising:multiple vanes;a rotor that rotates due to a rotating force received from a rotation shaft, and includes vane grooves which are recessed from an outer circumferential surface of the rotor in a radial direction of rotation such that the vanes are supported in such a way as to be capable of moving in the radial direction of rotation; anda cam ring that includes an inner circumferential surface facing the outer circumferential surface of the rotor, and surrounds the rotor,wherein the vane grooves of the rotor include center side spaces which are spaces on a rotation center side of the vane grooves, accommodate a working fluid, and support the vanes,wherein a supply path that supplies the working fluid to the center side spaces is provided along a rotation direction of the rotor, a first supply portion that supplies the working fluid to the center side spaces at a first pressure, and', 'a second supply portion that is formed away from the first supply portion and supplies the working fluid to the center side spaces at a second pressure higher than the first pressure, and, ' ...

VANE PUMP DEVICE

An embodiment provides a vane pump device. In the vane pump device, vane grooves of a rotor include columnar grooves which accommodate oil, and support the vanes. An inner-plate low pressure side recess portion is provided in an end surface of an inner plate along a rotation direction, and supplies oil to the columnar grooves. An outer-plate low pressure side through-hole and an outer-plate low pressure side recess portion are provided in an end surface of an outer plate along the rotation direction, and supply oil to the columnar grooves at a position facing the inner-plate low pressure side recess portion. An opening area of the inner-plate low pressure side recess portion is equal to a sum of opening areas of the outer-plate low pressure side through-hole and the outer-plate low pressure side recess portion. 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 such that the vanes are supported in such a way as to be capable of moving in a radial direction of rotation, and which form center side spaces accommodating a working fluid on a rotation center side, 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 surrounds the rotor;one cover member that is disposed on one end portion side of the cam ring in a direction of a rotation axis to cover an opening of the cam ring; andanother cover member that is disposed on the other end portion side of the cam ring in the direction of the rotation axis to cover an opening of the cam ring,wherein a first supply path is provided in a cam ring side end surface of the one cover member along a rotation direction of the rotor, and supplies the working fluid to the center side spaces,wherein a second supply path is provided in a cam ring side end surface of the other cover member along the ...

VANE PUMP DEVICE

An embodiment provides a vane pump device. In the vane pump device, vane grooves of a rotor include columnar grooves which accommodate oil, and support the vanes. An inner-plate low pressure side recess portion is provided in an end surface of an inner plate along a rotation direction of the rotor, and supplies oil to the columnar grooves. It includes a low pressure side upstream recess portion, a low pressure side downstream recess portion, and a low pressure side connection recess portion through which the low pressure side upstream recess portion is connected to the low pressure side downstream recess portion. The width of the low pressure side upstream recess portion is equal to that of the low pressure side downstream recess portion. The width of the low pressure side connection recess portion is narrower than that of the low pressure side upstream recess portion. 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 such that the vanes are supported in such a way as to be capable of moving in a radial direction of rotation, and which form center side spaces accommodating a working fluid on a rotation center side, 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 surrounds the rotor; anda cover member that is disposed on one end portion side of the cam ring in a direction of a rotation axis to cover an opening of the cam ring,wherein a groove is provided in a cam ring side end surface of the cover member along a rotation direction of the rotor, and supplies the working fluid to the center side spaces, a first groove portion that accommodates the working fluid,', 'a second groove portion that is positioned on a downstream side of the first groove portion in the rotation direction, and', 'a third groove portion that connects the ...

VANE PUMP DEVICE

An embodiment provides a vane pump device. In the vane pump device, vane grooves of a rotor include columnar grooves which accommodate oil, and support the vanes. An inner-plate low pressure side recess portion is provided in an end surface of an inner plate along a rotation direction of the rotor, and supplies oil to the columnar grooves. It includes a low pressure side upstream recess portion, a low pressure side downstream recess portion, and a low pressure side connection recess portion that connects the low pressure side upstream recess portion and the low pressure side downstream recess portion. The width of the low pressure side downstream recess portion is narrower than that of the low pressure side upstream recess portion. The width of the low pressure side connection recess portion is equal to that of the low pressure side downstream recess portion. 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 such that the vanes are supported in such a way as to be capable of moving in a radial direction of rotation, and which form center side spaces accommodating a working fluid on a rotation center side, 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 surrounds the rotor; anda cover member that is disposed on one end portion side of the cam ring in a direction of a rotation axis to cover an opening of the cam ring,wherein a groove is provided in a cam ring side end surface of the cover member along a rotation direction of the rotor, and supplies the working fluid to the center side spaces, a first groove portion that accommodates the working fluid,', 'a second groove portion that is positioned on a downstream side of the first groove portion in the rotation direction, and', 'a third groove portion that connects the first ...

VANE PUMP DEVICE

In a vane pump device, an inner plate is provided with a low pressure side upstream recess portion; a low pressure side downstream recess portion that is positioned on the downstream side of the low pressure side upstream recess portion in a rotation direction of a rotor; and a low pressure side connection recess portion that connects to the low pressure side upstream recess portion and the low pressure side downstream recess portion. An outer plate includes an outer-plate low pressure side through-hole through which oil is supplied to the low pressure side upstream recess portion via columnar grooves of the rotor; an outer-plate low pressure side recess portion into which oil flows from the low pressure side downstream recess portion via the columnar grooves; and an outer-plate connection portion through which connects to the outer-plate low pressure side through-hole and the outer-plate low pressure side recess portion. 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 such that the vanes are supported in such a way as to be capable of moving in a radial direction of rotation, and which form center side spaces accommodating a working fluid on a rotation center side, 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 surrounds the rotor;one cover member that is disposed on one end portion side of the cam ring in a direction of a rotation axis to cover an opening of the cam ring; andanother cover member that is disposed on the other end portion side of the cam ring in the direction of the rotation axis to cover an opening of the cam ring,wherein a first supply path is provided in a cam ring side end surface of the one cover member along a rotation direction of the rotor, and supplies the working fluid to the center side spaces, ...

VANE PUMP DEVICE

An embodiment provides a vane pump device includes multiple vanes; a rotor that includes vane grooves which movably support the vanes and which are formed with columnar grooves accommodating oil on rotation center side, and that rotates due to a rotating force received from a rotation shaft; a cam ring that surrounds the rotor; and an inner plate that is disposed on one end portion side of the cam ring in a direction of a rotation axis to cover an opening of the cam ring. The inner plate includes a first portion that is provided to face the grooves, and supplies low pressure oil to the grooves, and a second portion which is provided to face the grooves, supplies high pressure oil to the grooves, and has a width in a radial direction of rotation which is different from that of the first portion in the radial direction of rotation. 1. A vane pump device comprising:multiple vanes;a rotor that includes vane grooves which supports the vanes so that the vanes can move in a radial direction of rotation and which form center side spaces accommodating a working fluid on a rotation center side, and that rotates due to a rotating force received from a rotation shaft;a cam ring that includes an inner circumferential surface facing an outer circumferential surface of the rotor, and surrounds the rotor; andone cover portion that is disposed on one end portion side of the cam ring in a direction of a rotation axis to cover an opening of the cam ring, a first supply portion that is provided to face the center side spaces, and supplies the working fluid to the center side spaces at a first pressure, and', 'a second supply portion that is provided to face the center side spaces, supplies the working fluid to the center side spaces at a second pressure different from the first pressure, and has a width in the radial direction of rotation which is different from that of the first supply portion in the radial direction of rotation., 'wherein the one cover portion includes'}2. The vane ...

DRIVE DEVICE

In a drive device, a pump includes a pump room in a housing, a suction port through which oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The housing includes an inner lid that holds a bearing journaling a motor shaft and covers one side in an axial direction of a stator, an outer lid that is attached to one side in the axial direction of the inner lid and covers one side in the axial direction of the motor shaft, and a suction oil passage connecting a lower region in a vertical direction in an accommodation portion and the suction port. At least a portion of the suction oil passage is between the inner lid and the outer lid. The inner lid includes an opening penetrating the inner lid and connecting the lower region in the vertical direction and a portion of the suction oil passage between the inner lid and the outer lid. The strainer is provided in the opening. 16-. (canceled)7. A drive device comprising:a rotor including a motor shaft disposed along a center axis extending in one direction and a rotor core fixed to the motor shaft;a stator radially opposed the rotor with a gap interposed between the stator and the rotor;a housing including an accommodation portion to store oil and accommodate the rotor and the stator;a pump driven through the motor shaft; anda strainer attached to the housing; wherein a pump room provided in the housing;', 'a suction port through which the oil is to be sucked into the pump room; and', 'a discharge port through which the oil is to be discharged from the pump room;, 'the pump includes an inner lid that holds a bearing journaling the motor shaft and covers one side in an axial direction of the stator;', 'an outer lid that is attached to one side in the axial direction of the inner lid and covers one side in the axial direction of the motor shaft; and', 'a suction oil passage connecting a lower region in a vertical direction in the accommodation portion and the ...

COMPRESSOR

The present disclosure relates to a compressor including a branch part for reducing vibration and noise caused by a refrigerant flowing inside a muffler by expanding an enclosed space formed by a compression part and the muffler in the direction of a rotation axis. 1. A compressor comprising:a case that includes an outlet configured to discharge refrigerant;a rotation shaft;a driver that is coupled to the case and configured to rotate the rotation shaft;a compression part that is coupled to the rotation shaft and configured to compress the refrigerant;a muffler that is coupled to the compression part, wherein the muffler and the compression part define an enclosed space configured to guide the refrigerant to the outlet of the case; anda branch part that extends from at least one of the compression part or the muffler in a longitudinal direction of the rotation shaft and that defines an additional space to the enclosed space, wherein the additional space is configured to reduce vibration or noise caused by movement of the refrigerant.2. The compressor of claim 1 , wherein the branch part extends from the muffler in a first direction away from the compression part.3. The compressor of claim 2 , wherein the muffler comprises:a muffler shaft support portion that is coupled to the rotation shaft; anda collector part that extends from the muffler in a radial direction of the rotation shaft away from the rotation shaft and that is configured to guide the refrigerant to the outlet of the case,wherein the branch part extends from the collector part in the first direction away from the compression part.4. The compressor of claim 3 , wherein the collector part comprises:a first collector that extends from a first side of the muffler in the radial direction of the rotation shaft away from the enclosed space; anda second collector that extends from a second side of the muffler in the radial direction of the rotation shaft away from the enclosed space, and a first branch that ...

BATCHING/DELIVERING SYSTEM COMPRISING AT LEAST ONE REMOTELY ACTUATED VOLUMETRIC BATCHING PUMP

A batching/delivering system for delivering and batching high viscosity products, having at least one managing and actuating device, where the managing and actuating device have at least one control motor and at least one remotely-actuated volumetric batching pump for delivering and batching high viscosity products. The remotely-actuated volumetric batching pump has at least one sucking, volumetrically batching and delivering element with a first duct for sucking the product to be batched, at least one volumetric batching device of the product, and at least one second duct for exiting the product batched by the device. The device is connected to at least one control motor of the device by interposing at least one flexible rotary shaft. 15-. (canceled)6. A system for delivering and batching high viscosity products , the system comprising:a. at least one managing and actuating device;b. at least one sucking, volumetrically batching and delivering element attached to the at least one managing and actuating device; andc. at least one control motor operatively connected to the at least one managing and the actuating device.7. The system of claim 6 , where the managing and the actuating device comprise:a. at least one control motor; andb. at least one remotely-actuated volumetric batching pump8. The system of claim 6 , where the at least one sucking claim 6 , volumetrically batching and delivering element comprises:a. a first duct for sucking a product to be batched;b. at least one volumetric batching device attached to the first duct;c. at least one second duct for exiting the batched product attached to the at least one volumetric batching device; andd. at least one control and management console.9. The system of claim 8 , the managing and the actuating device further comprises at least one flexible rotary shaft operatively connected to the at least one control motor.10. The system of claim 8 , where the volumetric batching device comprises at least one pump with ...

INTERNAL GEAR PUMP

Provided is an internal gear pump requiring fewer machining steps, allowing inexpensive manufacture, and offering high safety from the standpoint of function. The internal gear pump comprises: a trochoid in which an inner rotor having a plurality of outer teeth is eccentrically and rotatably accommodated in an outer rotor having a plurality of inner teeth, the outer teeth meshing with the inner teeth, and in which a suction-side chamber for suctioning liquid and a discharge-side chamber for discharging liquid that has been suctioned into the suction-side chamber are formed in between the inner teeth and outer teeth; a casing in which is formed a recess for accommodating the trochoid ; and a cover for closing off the recess of the casing . At least some of the casing is a body injection-molded from a resin composition. The invention also comprises a groove in a portion of the recess of the casing in which the outer periphery is sealed, with a sealing ring installed therein, and bushings made from sintered metal that are provided integrally during injection molding in bolt fixing hole portions. 1. An internal gear pump comprising a trochoid in which an inner rotor having a plurality of outer teeth is eccentrically and rotatably accommodated in an outer rotor having a plurality of inner teeth , the outer teeth meshing with the inner teeth , and a suction-side chamber for suctioning liquid and a discharge-side chamber for discharging liquid suctioned into the suction-side chamber are formed between the inner teeth and outer teeth;said internal gear pump being characterized by comprising a casing in which is formed a recess for accommodating the trochoid and a cover for closing off the recess of the casing, at least some of the casing being a body injection-molded from a resin composition.2. The internal gear pump according to claim 1 , characterized in that the inner face of the recess of the casing comprises a body injection-molded from a resin composition claim 1 , ...

VANE PUMP UNIT

A vane pump unit assembled into a housing includes a rotor; a plurality of vanes; a cam ring; a first plate; a second plate; a connecting bar that has a first end portion fixed to the first plate, and a second end portion which protrudes from the second plate; and a clip that prevents the second plate and the cam ring from slipping out of the connecting bar. Before the clip is assembled into the housing, the retaining of the clip is positioned at least either between the first plate and the cam ring or between the second plate and the cam ring, in a place where a gap is formed. After the clip is assembled into the housing, the housing interposes the first plate, the cam ring, and the second plate in the axial direction, and the first and second plates are in close contact with the cam ring. 1. A vane pump unit that is assembled into a housing of a vane pump , the pump unit comprising:a rotor;a plurality of vanes that are slidably provided in the rotor;an annular cam ring that surrounds the rotor and the plurality of vanes;a first plate that is disposed on one end surface side of the rotor;a second plate that is disposed on the other end surface side of the rotor;a connecting bar that passes through the cam ring in an axial direction, and has a first end portion fixed to the first plate, and a second end portion which passes through the second plate and then protrudes from the second plate; anda retainer that is retained in the second end portion of the connecting bar, and prevents the second plate and the cam ring from slipping out of the connecting bar,wherein before the retainer is assembled into the housing, the retaining of the retainer is positioned at least either between the first plate and the cam ring or between the second plate and the cam ring, in a place where a gap is formed, andafter the retainer is assembled into the housing, the housing interposes the first plate, the cam ring, and the second plate in the axial direction, and the first and second ...

Integrated Brushless Direct Current Motor and Lift Pump

A lift pump having a longitudinal axis and comprising first and second housing components defining an operational volume, a brushless direct current motor assembly, and a pump assembly disposed in said volume. The brushless direct current motor assembly has a motor axis eccentric with the longitudinal axis, a rotor, and a stator disposed diametrically inwardly of the rotor. The rotor further comprises a plurality of magnetic poles of alternating opposite polarity. The pump assembly has a pump annulus and a pump element. The pump annulus is disposed intermediate said first and second housing components and coaxial with the longitudinal axis. The pump element is coaxial with said motor axis, and comprises a generally cylindrical hub defining a motor assembly cavity sized to diametrically receive said motor assembly. 1. A lift pump having a longitudinal axis comprising:first and second housing components defining an inlet, an outlet, and an operational volume;a brushless direct current motor assembly having a motor axis eccentric with the longitudinal axis, a rotor comprising a plurality of magnetic poles arranged in alternating opposite polarity, and a stator comprising a number of selectively energizeable coils disposed diametrically inwardly of said rotor annulus; anda pump assembly having an inlet and outlet including a pump annulus coaxial with the longitudinal axis, a pump element coaxial with said motor axis and having a generally cylindrical hub defining a motor assembly cavity having a diametral width w and an axial depth d, wherein said motor assembly cavity is sized to diametrically receive said motor assembly so that said pump element rotates with said rotor.2. The lift pump of claim 1 , wherein said plurality of magnetic poles comprise a plurality of individual magnets of alternating opposite polarity affixed to an annulus claim 1 , and said annulus is secured diametrically within said motor assembly cavity.3. The lift pump of claim 1 , wherein said ...

PUMP APPARATUS

A pump apparatus includes a housing, a shaft, a rotor, a plurality of vanes, a pressure relief passage, and a bearing. The housing includes suction ports and discharge ports. The rotor and the vanes transport hydraulic oil to the discharge ports. The hydraulic oil is sucked from the suction ports. The pressure relief passage is defined in a portion of the housing facing an outer peripheral surface of the shaft. The pressure relief passage brings the discharge ports into communication with a low pressure region where the hydraulic oil is low in pressure. When a pressure of the hydraulic oil in the discharge ports is lower than a first predetermined pressure, the bearing keeps the pressure relief passage out of communication with a passage. When the pressure of the hydraulic oil in the discharge ports has increased to reach or exceed the first predetermined pressure, the bearing brings the pressure relief passage into communication with the passage. 1. A pump apparatus comprising:a housing including a suction port and a discharge port;a shaft rotatably supported in the housing;a rotator disposed in the housing, the rotator being configured to rotate in accordance with rotation of the shaft so as to transfer hydraulic oil to the discharge port, the hydraulic oil being sucked from the suction port;a pressure relief passage defined in a portion of the housing facing an outer peripheral surface of the shaft, the pressure relief passage being configured to bring the discharge port into communication with a low pressure region where the hydraulic oil is low in pressure; anda bearing disposed on the pressure relief passage, the bearing supporting the shaft such that the shaft is rotatable relative to the housing, whereinwhen a pressure of the hydraulic oil in the discharge port is lower than a first predetermined pressure, the bearing keeps the pressure relief passage out of communication with an adjacent hydraulic oil passage, andwhen the pressure of the hydraulic oil in ...

POWER TRANSMISSION APPARATUS

A power transmission apparatus includes an oil pump disposed between a hydraulic controller and a strainer. The oil pump includes a rotor () and a housing provided with a rotor chamber housing the rotor (). Rotation of the rotor () causes oil to be sucked into an oil chamber (c) defined by the rotor (), and the oil is pressurized and discharged therefrom. The housing is provided with a first oil passage () through which oil sucked from a reservoir through the strainer flows toward the oil chamber, and a second oil passage () through which oil refluxed from the hydraulic controller flows toward the oil chamber. The second oil passage () includes a curved oil passage curved along the rotor () and is disposed such that the oil refluxed from the hydraulic controller flows in a rotation direction of the rotor () through the curved oil passage. 113-. (canceled)14. A power transmission apparatus comprising:an input shaft drivingly coupled by a driving source;a speed change mechanism to change a speed of rotation of the input shaft and transmit a resulting rotation;a hydraulic controller to adjust pressure of oil and supply resulting oil to the speed change mechanism;a reservoir storing oil; andan oil pump including a rotor and a housing provided with a rotor chamber housing the rotor, the oil pump being configured such that rotation of the rotor causes oil as an excess pressure discharged inside the hydraulic controller and refluxed therefrom and oil sucked from the reservoir through a strainer to be sucked into a pump chamber defined by the rotor, and the oil sucked into the pump chamber is pressurized and supplied to the hydraulic controller, whereinthe oil pump is disposed between the hydraulic controller and the strainer as viewed in an axial direction of the rotor,the housing is provided with a first oil passage through which the oil sucked through the strainer is supplied to the pump chamber, and a second oil passage through which the oil refluxed from the hydraulic ...

OIL PUMP

This oil pump is equipped with a rotatable inner rotor that includes a vane-housing unit housing multiple vanes so as to be capable of sliding in the radial direction, a rotatable annular outer rotor that includes multiple vane-connecting parts connecting the tip ends of the multiple vanes on the outside in the radial direction, first volume-changing parts, which are provided between the inner rotor and the outer rotor, and a first volume of which is changed in response to eccentricity of the inner rotor with respect to the outer rotor, thereby providing a pumping function, and second volume-changing parts, which are provided in the outer rotor, and a second volume of which is changed by a change in the distance between adjacent vane-connecting parts in the circumferential direction in response to eccentricity of the inner rotor with respect to the outer rotor, thereby providing a pumping function. 1. An oil pump comprising:a rotatable inner rotor that includes a vane-housing unit housing multiple vanes so as to be capable of sliding in a radial direction;a rotatable annular outer rotor that includes multiple vane-connecting parts connecting tip ends of the multiple vanes on an outside in the radial direction;first volume-changing parts, which are provided between the inner rotor and the outer rotor, and a first volume of which is changed in response to eccentricity of the inner rotor with respect to the outer rotor, thereby providing a pumping function; andsecond volume-changing parts, which are provided in the outer rotor, and a second volume of which is changed by a change in a distance between adjacent vane-connecting parts in a circumferential direction in response to the eccentricity of the inner rotor with respect to the outer rotor, thereby providing a pumping function.2. The oil pump according to claim 1 , further comprising third volume-changing parts claim 1 , a third volume of which in the vane-housing unit of the inner rotor is changed by slide of the ...

GEAR PUMP

In a gear pump, an outer inner wall surface of a suction port which is located on a downstream side in a rotor rotation direction, that is, a first inner wall surface, is located inward of a bottom land between internal teeth of an outer rotor, and the suction port has a shallow portion extended inward from the first inner wall surface on the downstream side in the rotor rotation direction, and a deep portion that is formed so as to be continuous with the shallow portion and that is deeper than the shallow portion. Communication between an inter-tooth chamber and the suction port is cut off with the inter-tooth chamber facing only the shallow portion. 1. A gear pump including an inner rotor that has a plurality of external teeth and that is driven to rotate , an outer rotor that has a plurality of internal teeth , that is placed so as to be offset with respect to the inner rotor , and that rotates together with the inner rotor with a part of the plurality of internal teeth meshing with a part of the plurality of external teeth , a suction port that communicates with such an inter-tooth chamber that increases in capacity with rotation of the inner rotor and the outer rotor out of a plurality of inter-tooth chambers defined by the external teeth and the internal teeth , and a discharge port that communicates with such an inter-tooth chamber that reduces in capacity with rotation of the inner rotor and the outer rotor out of the plurality of inter-tooth chambers , whereinan outer inner wall surface of the suction port which is located on a downstream side in a rotor rotation direction is located inward of a bottom land between the internal teeth, andthe suction port has a shallow portion extended inward from the outer inner wall surface on the downstream side in the rotor rotation direction, and a deep portion that is formed so as to be continuous with the shallow portion and that is deeper than the shallow portion.2. The gear pump according to claim 1 , ...

Pump device for delivering a medium

A pump device having a vane-type pump has a check valve in a fluid duct which leads from a pressure region to an under-vane region. The check valve blocks in the direction of the pressure region, preventing pressure from escaping from the under-vane region into the pressure region during the start-up of the vane-type pump. 18-. (canceled)9. A pump device for delivering a medium , the pump device comprising:{'b': 7', '21', '26, 'a pressure region (, , ); and'}{'b': 1', '17, 'claim-text': [{'b': 2', '19', '10, 'a stator (, ) having a cam contour (), and'}, {'b': 3', '2', '19', '4', '5', '8', '9', '10', '2', '19', '11', '12', '23', '24', '7', '21', '26', '14', '27', '29', '11', '12', '23', '24', '4', '5, 'a rotor (), rotatable in the stator (, ) and having vanes (, ) extendable radially outward out of vane slots (, ) in the direction of the cam contour () of the stator (, ), and under-vane regions (, , , ), connected to the pressure region (, , ) of the pump device by a fluid duct (, , ) such that the under-vane regions (, , , ) are subjected to pressure to hydraulically extend the vanes (, ),'}], 'a vane-type pump (, ), having{'b': 11', '12', '23', '24', '4', '5', '14', '27', '29', '11', '12', '23', '24', '7', '21', '26', '1', '17, 'wherein the under-vane regions (, , , ) of the vanes (, ) are connected to one another, and the fluid duct (, , ) is closed from the under-vane region (, , , ) in the direction of the pressure region (, , ) at least during a starting of the vane-type pump (, ).'}10312729. The pump device as claimed in claim 9 , further comprising a switchable valve () arranged in the fluid duct ( claim 9 , ).1115283014272915283072126. The pump device as claimed in claim 9 , further comprising a check valve ( claim 9 , claim 9 , ) arranged in the fluid duct ( claim 9 , claim 9 , ) claim 9 , the check valve ( claim 9 , claim 9 , ) being configured to shut off in the direction of the pressure region ( claim 9 , claim 9 , ).1232272932. The pump device as ...

GEAR PUMP

A gear pump according to the present invention is configured such that a first pump chamber comprises a first intake space into which a fluid is taken in and a first discharge space from which the fluid is discharged, in accordance with rotation of an internal gear and external gears, a second pump chamber comprises a second intake space into which the fluid is taken in and a second discharge space from which the fluid is discharged, in accordance with rotation of the internal gear and the external gears, the first intake space and the second intake space are provided to be symmetrical about a rotational center of the internal gear, and the first discharge space and the second discharge space are provided to be symmetrical about the rotational center of the internal gear. 1. A gear pump comprising: an internal gear having an annular shape and having internal teeth on an inner circumference side; a first external gear and a second external gear each having external teeth on an outer circumference side , the external teeth capable of meshing with the internal teeth , the first external gear and the second external gear being provided on the inner circumference side of the internal gear; and a housing configured to rotatably hold the internal gear , the first external gear , and the second external gear , wherein a pump chamber is defined in the housing by the inner circumference side of the internal gear and the outer circumference sides of the first external gear and the second external gear ,wherein the housing comprises a partitioning portion that is provided between the first external gear and the second external gear to divide the pump chamber into a first pump chamber that is provided on the first external gear side and a second pump chamber provided on the second external gear side,wherein the first pump chamber comprises a first intake space into which a fluid is taken in and a first discharge space from which the fluid is discharged, in accordance with ...

Method for Operating a Multi-phase Pump and Apparatus Therefor

The invention concerns a method and an apparatus for operating a multi-phase pump which has a suction-side inlet () and a discharge-side outlet () and which pumps a multi-phase mixture charged with solids, comprising the following steps: 11020. A method for operating a multiphase pump having a suction-side inlet () and a discharge-side outlet () and with which a multiphase mixture loaded with solids is pumped , comprising:{'b': '45', 'a. pumping the multiphase mixture into a discharge-side separation chamber (),'}{'b': '45', 'b. separating a gaseous phase from a liquid phase and a solid phase in the discharge-side separation chamber (),'}{'b': '45', 'c. separating the liquid phase from the solid phase in the discharge-side separation chamber (),'}d. supplying a portion of the liquid phase freed from the solid phase to the suction side.24545. The method according to claim 1 , characterized in that the solid phase separated in the discharge-side separation chamber () is removed from the discharge-side separation chamber ().3. The method according to claim 2 , characterized in that the solid phase is either continuously removed by a rotary valve or cyclone separator claim 2 , or discontinuously removed by a valve claim 2 , liquid slugs or an inspection flap.4456120. The method according to claim 1 , characterized in that the gaseous phase is removed from the discharge-side separation chamber () separately from the liquid phase by a gas discharge outlet () separated from the discharge-side outlet () for the liquid phase.5. The method according to claim 1 , characterized in that the liquid phase separated from the solid phase is supplied to the suction side in a regulated manner.645904590. The method according to claim 1 , characterized in that the liquid phase is conducted from the discharge-side separation chamber () into a reservoir () separated from the discharge-side separation chamber () and is supplied from the reservoir () to the suction side.7. The method ...

VANE PUMP

A vane pump () is disclosed comprising a housing () having a stator bore, a rotor () being rotatably mounted within said stator bore, and having a number of vanes () slidably mounted in said rotor () in radial direction of said rotor (), an inlet () and an outlet (). Such a vane pump should have a good efficiency. To this end said inlet () opens in an axial end wall of said stator bore () and said outlet () is connected to an outflow area formed in a circumferential wall () of said stator bore. 1. A vane pump comprising a housing having a stator bore , a rotor being rotatably mounted within said stator bore , and having a number of vanes slidably mounted in said rotor in radial direction of said rotor , an inlet and an outlet , wherein said inlet opens in an axial end wall of said stator bore and said outlet is connected to an outflow area formed in a circumferential wall of said stator bore.2. The vane pump according to claim 1 , wherein said outflow area is formed as an outlet recess in said circumferential wall.3. The vane pump according to claim 1 , wherein said inlet is connected to a kidney-shaped inlet recess in an axial end wall of said stator bore claim 1 , said inlet recess having a width in radial direction claim 1 , said width increasing in a direction of rotation of said rotor.4. The vane pump according to claim 3 , wherein said rotor is positioned eccentrically within said stator bore claim 3 , wherein a radially inner border of said inlet recess runs parallel to a circle line around a rotational axis of said rotor and a radially outer border of said inlet recess runs parallel to said circumferential wall of said stator bore.5. The vane pump according to claim 4 , wherein said rotor has a core claim 4 , wherein said radially inner border of said inlet recess is on a same radius as an radially outer face of said core.6. The vane pump according to claim 4 , wherein said inlet recess comprises a trailing border running parallel to a radial direction of ...

FLUID TRANSPORT DEVICE

The present invention comprises: a stator that is cylindrical and has a through hole the through hole in the shape of a female screw and being formed at a certain pitch in the flow direction from an inlet to an outlet; and a rotor that is formed in the shape of a male screw, is inserted into the through hole of the stator to form a transport space with the inner circumferential surface of the through hole, and rotates to move a fluid from the inlet to the outlet through the transport space while being inscribed on the inner circumferential surface. The volume of the transport space is reduced toward the flow direction. This prevents, reliably, the occurrence of bubbles from a fluid at a downstream-side when the fluid is transported through the transport space formed between the stator and the rotor 12-. (canceled)3. A fluid transport device comprising:a stator having a tubular shape and provided with a through hole in a female screw shape having predetermined pitches in a flow direction from an inlet port to a discharge port; anda rotor having a male screw shape, inserted through the through hole of the stator to form a transport space between the rotor and an inner circumferential surface of the through hole, and configured to rotate to be in contact with the inner circumferential surface to shift fluid from the inlet port to the discharge port in the transport space, whereina capacity of the transport space is decreased in the flow direction by decrease in sectional area of the through hole of the stator with the rotor having a constant diameter.46-. (canceled)7. The fluid transport device according to claim 3 , wherein a decrease rate of the sectional area of the through hole of the stator is not less than dimensional tolerance.89-. (canceled) This is a divisional application of U.S. application Ser. No. 15/525,494 with a filing date of May 9, 2017, which is a national phase application in the United States of International Patent Application No. PCT/JP2015/ ...

FLUID TRANSPORT DEVICE

The present invention comprises: a stator that is cylindrical and has a through hole the through hole in the shape of a female screw and being formed at a certain pitch in the flow direction from an inlet to an outlet; and a rotor that is formed in the shape of a male screw, is inserted into the through hole of the stator to form a transport space with the inner circumferential surface of the through hole, and rotates to move a fluid from the inlet to the outlet through the transport space while being inscribed on the inner circumferential surface. The volume of the transport space is reduced toward the flow direction. This prevents, reliably, the occurrence of bubbles from a fluid at a downstream-side when the fluid is transported through the transport space formed between the stator and the rotor 13-. (canceled)4. A fluid transport device comprising:a stator having a tubular shape and provided with a through hole in a female screw shape having predetermined pitches in a flow direction from an inlet port to a discharge port; anda rotor having a male screw shape, inserted through the through hole of the stator to form a transport space between the rotor and an inner circumferential surface of the through hole, and configured to rotate to be in contact with the inner circumferential surface to shift fluid from the inlet port to the discharge port in the transport space, whereina capacity of the transport space is decreased in the flow direction by increase in diameter of the rotor with the through hole of the stator having a constant sectional area.57-. (canceled)8. The fluid transport device according to claim 4 , wherein an increase rate of the diameter of the rotor is not less than dimensional tolerance.9. (canceled) This is a divisional application of U.S. application Ser. No. 15/525,494 with a filing date of May 9, 2017, which is a national phase application in the United States of International Patent Application No. PCT/JP2015/074716 with an international ...

FLUID TRANSPORT DEVICE

The present invention comprises: a stator that is cylindrical and has a through hole the through hole in the shape of a female screw and being formed at a certain pitch in the flow direction from an inlet to an outlet; and a rotor that is formed in the shape of a male screw, is inserted into the through hole of the stator to form a transport space with the inner circumferential surface of the through hole, and rotates to move a fluid from the inlet to the outlet through the transport space while being inscribed on the inner circumferential surface. The volume of the transport space is reduced toward the flow direction. This prevents, reliably, the occurrence of bubbles from a fluid at a downstream-side when the fluid is transported through the transport space formed between the stator and the rotor 14-. (canceled)5. A fluid transport device comprising:a stator having a tubular shape and provided with a through hole in a female screw shape having predetermined pitches in a flow direction from an inlet port to a discharge port; anda rotor having a male screw shape, inserted through the through hole of the stator to form a transport space between the rotor and an inner circumferential surface of the through hole, and configured to rotate to be in contact with the inner circumferential surface to shift fluid from the inlet port to the discharge port in the transport space, whereina capacity of the transport space is decreased in the flow direction by decrease in eccentricity of the rotor.68-. (canceled)9. The fluid transport device according to claim 5 , wherein a decrease rate of the eccentricity of the rotor is not less than dimensional tolerance. This is a divisional application of U.S. application Ser. No. 15/525,494 with a filing date of May 9, 2017, which is a national phase application in the United States of International Patent Application No. PCT/JP2015/074716 with an international filling date of Aug. 31, 2015, which claims priority from Japanese Patent ...

Vane Pump

A vane cell pump for a transmission of a motor vehicle includes a housing. A rotor defines a plurality of slots. The plurality of slots runs radially. A plurality of vanes is arranged in the plurality of slots of the rotor. An end plate is positioned in a bottom area of the housing. The end plate is configured as a fluid guide with a suction channel and a pressure channel. The end plate forms a bottom wall of the housing. 13-. (canceled)4. A vane cell pump for a transmission of a motor vehicle , comprising:a housing;a rotor defining a plurality of slots, the plurality of slots running radially;a plurality of vanes arranged in the plurality of slots of the rotor;an end plate positioned in a bottom area of the housing, the end plate configured as a fluid guide with a suction channel and a pressure channel,wherein the end plate forms a bottom wall of the housing.5. The vane cell pump of claim 4 , wherein a side wall of the housing has an inwardly bent end that positively locks the end plate to the housing such that the vane cell pump is a closed claim 4 , pre-assembled unit.6. The vane cell pump of claim 4 , wherein the housing does not have a separate housing bottom such that a thickness of the end plate is increased and the suction channel is optimized in terms of flow.7. The vane cell pump of claim 4 , wherein the transmission defines a vane cell pump installation space claim 4 , the end plate forming the bottom wall of housing such that the vane cell pump is installation space neutral for the vane cell pump installation space of the transmission.8. A vane cell pump for a transmission of a motor vehicle claim 4 , comprising:a housing;a rotor positioned within the housing, the rotor defining a plurality of radially running slots;a plurality of vanes mounted to the rotor, each vane of the plurality of vanes arranged in a respective one of the plurality of radially running slots of the rotor;an end plate mounted to the housing such that the end plate extends from the ...

POSITIVE DISPLACEMENT PUMP

A positive displacement pump for pumping oil in a motor vehicle transmission comprises a pump stage that has a central kidney-shaped suction cavity and two kidney-shaped pressure cavities. Oil is selectively pumped via one kidney-shaped pressure cavity or the other kidney-shaped pressure cavity in accordance with the direction of rotation of the pump stage. This makes it possible to create, with little complexity, two operating stages for the positive displacement pump. 1. A positive displacement pump , for conveying oil in a gearbox or a combustion engine of a motor vehicle , comprising:a pump stage;a drive unit, the pump stage driven by the drive unit;a suction port in fluid communication with the pump stage, such that oil is drawn into the suction port by the pump stage;a pressure port which receives pressured oil from the pump stage;a switchover device operable for placing the pump stage in one of a plurality of modes of operation;a central kidney-shaped suction cavity in fluid communication with the suction port; anda plurality of kidney-shaped pressure cavities;wherein the pressure port receives pressurized fluid from one of the plurality of kidney-shaped pressure cavities when the positive displacement pump is placed in one of the plurality of modes of operation.2. The positive displacement pump of claim 1 , wherein the switchover device is connected to the drive unit such that the switchover device selectively controls the drive direction of the pump stage.3. The positive displacement pump of claim 1 , further comprising:a first plurality of check valves;wherein one of the first plurality of check valves places one of the two kidney-shaped pressure cavities in fluid communication with the single pressure port, and another of the first plurality of check valves places the other of the two kidney-shaped pressure cavities in fluid communication with the single pressure port.4. The positive displacement pump of claim 1 , further comprising:a second plurality of ...

VARIABLE CAPACITY PUMP AND WORKING OIL SUPPLY SYSTEM FOR INTERNAL COMBUSTION ENGINE

Provided is a variable capacity pump where ease of control can be improved. A variable capacity pump includes a control chamber and a control valve. The control chamber is disposed between a pump accommodating chamber and a movable member, and the volume of the control chamber is variable with the movement of the movable member. Working oil discharged from a discharge portion is introduced into the control chamber. The control valve is provided in a passage and, with the movement of a valve element, the control valve varies the cross-sectional area of a flow passage, through which working oil in the control chamber is drained to a low pressure portion, while making the discharge portion and the control chamber communicate with each other. 1. A variable capacity pump comprising:a housing including a pump accommodating chamber therein;a pump structure disposed in the pump accommodating chamber, and configured to vary volumes of a plurality of working chambers with rotation, the pump structure being further configured to discharge from a discharge portion working oil introduced from an intake portion by being rotationally driven;a movable member disposed in the pump accommodating chamber, and accommodating the pump structure to define the plurality of working chambers, the movable member being configured to cause an amount of increase or decrease in volume of each of the plurality of working chambers during rotation of the pump structure to be varied by moving so that an amount of eccentricity of a center of an inner periphery of the movable member from a center of rotation of the pump structure varies;a first biasing member disposed in the pump accommodating chamber in a state where a set load is applied to the first biasing member, and configured to bias the movable member in a direction that the amount of increase or decrease in volume of each of the plurality of working chambers increases;a first control chamber which is disposed between the pump accommodating ...

GEAR PUMP WITH IMPROVED PUMP INLET

Gear pump with meshing gears enclosed by a pump housing, with bearing journals arranged on longitudinal axes and each projecting laterally away from the gears, wherein at least one of the bearing journals has, at least over part of its axial extension, a bearing journal diameter that lies in the range of 90% to 100% of a root diameter of the toothing of the associated gear. A toothing width (b) is at least twice the dimension of a distance (a) between the longitudinal axes, the toothing width (b) being an extension of the gears parallel to the longitudinal axes. 114.-. (canceled)16. The gear pump according to claim 15 , wherein the toothing width b is at most 2a+6h claim 15 , where a is the distance between the longitudinal axes of the gears and h is a tooth height of the gears.17. The gear pump according to claim 15 , wherein the toothing width b lies in a range claim 15 , whose lower limit is 2a and whose upper limit is 2a+2h claim 15 , where a is the distance between the longitudinal axes of the gears and h is a tooth height of the gears.18. The gear pump according to claim 15 , wherein the toothing width b lies in a range claim 15 , whose lower limit is 2a+2h and whose lower limit is 2a+4h claim 15 , where a is the distance between the longitudinal axes of the gears and h is a tooth height of the gears.19. The gear pump according to claim 15 , wherein the toothing width b is 2a+3h claim 15 , where a is the distance between the longitudinal axes of the gears and h is a tooth height of the gears.20. The gear pump according to claim 15 , wherein the maximum opening angle α lies in the range of 20° to 50°.21. The gear pump according to claim 15 , wherein the maximum opening angle α is equal 40°.22. The gear pump according to claim 15 , wherein the cross-section of the pump inlet on the upper toothing plane is square.23. The gear pump according to claim 15 , wherein the wall in the transition region runs in straight lines in all cutting planes passing across a ...

LUBRICANT SUPPLY DEVICE AND A COMPRESSOR USING THE SAME

Disclosed is a trochoid lubricant supply device that is configured to connect to a rotational shaft. A connector of the lubricant supply device is configured to reduce an oil leakage amount of lubricant, and is configured to insert to a lower portion of a rotational shaft. The connector includes: a rotator mounting member inserted into and fixed to the rotator of the lubricant supply device; a penetrating member that penetrates a fixer of the lubricant supply device; an enlarged diameter extending radially outwards from the penetrating member outside the fixer; and a rotational shaft mounting member extending axially in the diameter enlarged member and is fastened to the rotational shaft. Further, the lubricant supply device of the present disclosure can supply the oil regardless of a rotation direction of the rotational shaft by supplying the oil by a space pivoting about the rotational center of the rotator. 1. A lubricant supply device that is configured to be installed at an end of a rotational shaft and that is configured to supply lubricant to a lubricant supply flow path defined along a longitudinal direction of the rotational shaft , the lubricant supply device comprising:a fixer that defines an oil inlet, an accommodation space that communicates with the oil inlet, and an oil chamber that is spaced apart from the oil inlet, and that communicates with the oil inlet via the accommodation space, the fixer comprising a fixer cover that defines a through-hole at a center of the fixer cover and that covers an upper portion of the accommodation space of the fixer; anda rotator that is accommodated in the accommodation space of the fixer, that is coupled to the rotational shaft, and that is configured to rotate together with the rotational shaft, the rotator defining a rotator space that is positioned radially outward of a rotational center of the rotator and that faces the oil inlet and the oil chamber; an inner diameter coupler located at the rotational center of ...

VARIABLE DISPLACEMENT VANE PUMP

A variable displacement vane pump includes first and second sealing grooves formed on an intake port side and separated away from each other in a circumferential direction; first and second sealing members provided in the first and second sealing grooves; a first fluid-pressure chamber formed on a side on which a volume thereof decreases when the cam ring moves to a side on which an eccentricity of the cam ring increases; and a second fluid-pressure chamber formed on a side on which a volume thereof increases when the cam ring moves to a side on which the eccentricity of the cam ring increases; and a control valve configured to control the pressure in the first or second fluid-pressure chamber. 1. A variable displacement vane pump , comprising:a pump housing including a pump-element housing portion;a driving shaft rotatably supported by the pump housing;a rotor provided inside the pump housing so as to be rotationally driven by the driving shaft, the rotor including a plurality of slots arranged in a circumferential direction, which is a direction about a rotation axis of the driving shaft;a plurality of vanes provided in the plurality of slots so as to be projectable therefrom and retractable therein;a cam ring formed so as to have an annular shape, the cam ring being provided so as to be movable inside the pump-element housing portion, the cam ring forming a plurality of pump chambers on an inner circumferential side in cooperation with the rotor and the plurality of vanes;an intake port formed in the pump housing, the intake port having an opening in an intake region, in which volumes of the plurality of pump chambers increase along with the rotation of the rotor;a delivery port formed in the pump housing, the delivery port having an opening in a delivery region, in which the volumes of the plurality of pump chambers decrease along with the rotation of the rotor;a pair of sealing grooves formed on the pump-element housing portion so as to have openings oriented ...

CARTRIDGE VANE PUMP

A cartridge vane pump includes: a body-side side plate that is brought into contact with end surfaces of a rotor and a cam ring; first and second discharge ports that are formed in the body-side side plate; and an adapter that is formed with first and second connection channels for connecting the first and second discharge ports formed in the body-side side plate and first and second discharge channels formed in a body. 1. A cartridge vane pump accommodated in a body of fluid pressure device 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 slits formed in a radiating pattern so as to have opening portions at an outer circumference of the rotor;vanes respectively inserted into the slits in a freely slidable manner;a cam ring configured to have an inner circumference cam face with which tip end portions of the vanes are brought into sliding contact;pump chambers defined between the rotor, the cam ring, and the adjacent vanes;a cover member brought into contact with one end surfaces of the rotor and the cam ring, the cover member being fixed to the body;a side plate brought into contact with other end surfaces of the rotor and the cam ring;a discharge port formed in the side plate, the discharge port being configured such that working fluid discharged from the pump chambers is guided thereinto; andan adapter formed with a connection channel for connecting the discharge port formed in the side plate and a discharge channel formed in the body.2. The cartridge vane pump according to claim 1 , further comprisinga biasing member configured to constantly bias the side plate towards the rotor.3. The cartridge vane pump according to claim 2 , whereinthe biasing member is a seal member provided between the adapter and the side plate in a compressed state, the biasing member being the seal member configured to surround and seal an outer circumference ...

VANE PUMP

A vane pump includes a high-pressure chamber formed as a groove in a bottom portion of a pump-accommodating concave portion. The working fluid is discharged from a plurality of discharge ports leading to the high-pressure chamber. A high-pressure passage has an opening portion opening to the high-pressure chamber and guides the working fluid to the outside of the high-pressure chamber. In the vane pump, one of the plurality of discharge ports is arranged so as to face the opening portion of the high-pressure passage, and the flow-passage cross-sectional area of the high-pressure chamber is smaller than the total flow-passage cross-sectional area of the plurality of the discharge ports. 1. A vane pump comprising: a rotor linked to a driving shaft and having a plurality of vanes on an outer circumference thereof;a cam ring configured to accommodate the rotor and define pump chambers in a space therein;a pump body provided with a pump-accommodating concave portion into which the rotor and the cam ring are accommodated;a side plate provided between the rotor and the pump body;a plurality of discharge ports formed in the side plate and configured to discharge working fluid from the pump chambers;a high-pressure chamber in a form of a groove formed in a bottom portion of the pump-accommodating concave portion, the working fluid discharged from the plurality of discharge ports being led to the high-pressure chamber; anda high-pressure passage having an opening portion opening to the high-pressure chamber, the high-pressure passage being configured to guide the working fluid to outside of the high-pressure chamber, whereinone of the plurality of discharge ports is arranged so as to face the opening portion of the high-pressure passage, anda flow-passage cross-sectional area of the high-pressure chamber is smaller than a total flow-passage cross-sectional area of the plurality of discharge ports.2. The vane pump according to claim 1 , whereinthe plurality of discharge ports ...

LUBRICATION STRATEGY FOR DRY RUN PUMP SYSTEM

A gerotor pump assembly, and a system and method for operating a gerotor pump assembly, result in a lubrication strategy for operating in a loss-of-prime mode. An inner drive gear may be rotated in a first direction and in a second opposite direction about an axis of rotation. The inner drive gear has a number of projections extending outwardly therefrom. An outer driven gear surrounds the inner drive gear and defines a number of recessions along an inner surface configured to engage with the projections of the inner drive gear. The outer driven gear and the inner drive gear further define at least one dynamically-changing fluid cavity therebetween. The inner drive gear and the outer driven gear define an oil transfer volume clearance between a projection and a recession in a fully engaged position. Oil is maintained within the oil transfer volume clearance as the inner drive gear is rotated. 1. A gerotor pump assembly comprising:a shaft;an inner drive gear coupled to the shaft, the shaft and the inner drive gear being rotatable about an axis of rotation defined along a length of the shaft, the inner drive gear having a plurality of projections extending outwardly along an outer periphery thereof, the inner drive gear defining a pump running face along a side of the inner drive gear, the pump running face defining a lubrication cavity therein;an outer driven gear surrounding the inner drive gear and defining a plurality of recessions along an inner surface configured to engage with the plurality of projections of the inner drive gear, the outer driven gear and the inner drive gear further defining at least one dynamically-changing fluid cavity therebetween, each projection being configured to engage with a recession of the plurality of recessions in a fully engaged position, the inner drive gear and the outer driven gear defining an oil transfer volume clearance between a projection and a recession in the fully engaged position, the outer driven gear having a ...

Fluid Pump with Rotating Pumping Element Wear Reduction

A fluid pump includes an inlet plate with an inlet; an outlet plate, the outlet plate having an outlet plate outlet passage; an outlet; an electric motor having a shaft which rotates; a pumping element coupled to the shaft such that rotation of the pumping element by the shaft causes fluid to be pumped from the inlet to the outlet, the inlet plate interfacing with the pumping element in an inlet sealing surface interface and the outlet plate interfacing with the pumping element in an outlet sealing surface interface; a purge passage which receives fluid from the outlet plate outlet passage, the purge passage being in fluid communication with the inlet sealing surface interface and the outlet sealing surface interface; and a filter downstream of the outlet plate outlet passage which filters fluid that passes through the purge passage prior to reaching the inlet and outlet sealing surface interfaces. 1. A fluid pump comprising:a housing;an inlet plate disposed within said housing, said inlet plate having an inlet which introduces fluid to said housing;an outlet plate disposed within said housing, said outlet plate having an outlet plate outlet passage;an outlet which discharges fluid from said housing;an electric motor having a shaft which rotates about an axis;a pumping element rotationally coupled to said shaft such that rotation of said pumping element by said shaft causes fluid to be pumped from said inlet to said outlet plate outlet passage and through said outlet, said pumping element being located axially between said inlet plate and said outlet plate such that said inlet plate interfaces with said pumping element in an inlet sealing surface interface and such that said outlet plate interfaces with said pumping element in an outlet sealing surface interface;a purge passage downstream of said outlet plate outlet passage which receives fluid from said outlet plate outlet passage, said purge passage being in fluid communication with said inlet sealing surface ...

VANE PUMP

A vane pump includes a pump cartridge that is accommodated in an accommodating space defined by the concave portion and the pump cover. The pump cartridge includes a first side plate that is provided between the bottom portion of the concave portion in the pump body and a cam ring; first pins that are provided so as to extend from the cam ring to the first side plate; and second pins that are provided so as to extend from the first side plate to the pump body. 1. A vane pump comprising:a pump body having a concave portion;a pump cover attached to the pump body, the pump cover being configured to seal the concave portion; anda pump cartridge accommodated in an accommodating space defined by the concave portion and the pump cover, whereinthe pump cartridge comprises:a rotor linked to a driving shaft;a plurality of slits formed in the rotor in a radiating pattern to open in an outer circumference of the rotor;a plurality of vanes respectively inserted into the plurality of slits in a slidable manner;a cam ring having an inner circumferential surface on which tip-ends of the vanes slide by rotation of the rotor;a side plate provided between a bottom portion of the concave portion in the pump body and the cam ring;a first pin provided so as to extend from the cam ring to the side plate; anda second pin provided so as to extend from the side plate to the pump body.2. The vane pump according to claim 1 , whereinthe pump cartridge comprises two or more second pins.3. The vane pump according to claim 1 , whereinthe side plate has a discharge port configured to guide working fluid that has been discharged from pump chambers in the pump cartridge, the pump chambers being defined by the rotor, the cam ring, and the adjacent vanes, an arc-shaped high-pressure chamber into which the working fluid that has been discharged from the pump chambers is guided through the discharge port; and', 'a discharge passage configured to communicate with the high-pressure chamber through a high- ...

Oil pump

An oil pump includes: an outer rotor including internal teeth; an inner rotor including external teeth meshing with the internal teeth; a drive shaft connected to the inner rotor and configured to rotationally drive the inner rotor; and a housing including a pump chamber accommodating the inner and outer rotors. In the housing, a suction port and a discharge port are formed. The discharge port includes a first discharge port and a second discharge port. The suction port includes first and second suction ports respectively disposed on the same side as the first and second discharge ports. A pressure reducing oil passage communicating with the second discharge port and configured to reduce pressure of oil in the second discharge port is formed on the side of the second discharge port.

HIGH PRESSURE PUMP

A high pressure pump including a pump body, a pump housing within which at least part of the pump body is located, a gallery defined between the pump body and the pump housing, the pump body having a pump outlet which communicates with the gallery, and the pump housing having an outlet port which communicates with the gallery, and a filler located within the gallery, the filler being located at least in the part of the gallery most remote from the pump outlet. 115-. (canceled)16. A high pressure pump comprising:a pump body;a pump housing within which at least part of the pump body is located;a gallery defined between the pump body and the pump housing, the pump body having a pump outlet which communicates with the gallery, and the pump housing having an outlet port which communicates with the gallery; anda filler located within the gallery, the filler being located at least in the part of the gallery most remote from the pump outlet.17. The pump of claim 16 , wherein the gallery is of annular form.18. The pump of claim 17 , wherein the filler extends about at least half of the circumferential length of the gallery.19. The pump of claim 18 , wherein the filler extends about at least three quarters of the gallery.20. The pump of claim 16 , wherein a cross-sectional shape of the filler conforms with that of the gallery.21. The pump of claim 16 , wherein the filler substantially fills at least part of the gallery furthest from the pump outlet.22. The pump of claim 16 , wherein the filler is of an elastomeric material.23. The pump of claim 16 , wherein the filler is of molded fluorocarbon form.24. The pump of claim 16 , wherein the filler forms an interference fit in the gallery.25. The pump of claim 16 , further comprising locator means to resist movement of the filler within the gallery.26. The pump of claim 25 , wherein the locator means comprises locator pins provided in the gallery and arranged to abut ends of the filler to resist movement of the filler.27. The pump ...

VARIABLE DISPLACEMENT VANE PUMP

An object of the present invention is to provide a variable displacement vane pump capable of further reducing a pulse pressure. A vane pump () includes a cam ring (). The cam ring () is annularly formed, and defines a plurality of pump chambers () on an inner peripheral side thereof in cooperation with a rotor () and vanes (). An inner peripheral surface () of the cam ring () is formed in such a manner that, assuming that a confinement region refers to a region between an end portion of an intake port () and an end portion of a discharge port (), at a timing when the pump chamber () communicates with or is disconnected from the discharge port () on one side corresponding to one of confinement regions or a timing close thereto, a change in a volume change amount of the pump chamber () on another side corresponding to the other of the confinement regions has an extreme value in a direction for reducing a change in a discharge amount at the time of the above-described communication/disconnection. 1. A variable displacement vane pump comprising:a pump housing including a pump element containing portion;a driving shaft supported on the pump housing;a rotor provided in the pump housing and configured to be rotationally driven by the driving shaft, the rotor also including an odd number of slots in a circumferential direction of the rotor;an odd number of vanes provided in the slots in a manner projectable therefrom and retractable therein;a cam ring movably provided in the pump element containing portion and annularly formed, the cam ring forming a plurality of pump chambers on an inner peripheral side of the cam ring in cooperation with the rotor and the vanes;an intake port formed in the pump housing and opened to a region where a volume of each of the plurality of pump chambers increases according to a rotation of the rotor;a discharge port formed in the pump housing and opened to a region where the volume of each of the plurality of pump chambers reduces according to ...

VANE PUMP

A vane pump sucks the hydraulic fluid from a first inlet port and discharges it into a first outlet port and, at the same time, sucks the hydraulic fluid from a second inlet port and discharges it into a second outlet port, as a rotor having a plurality of slits housing vanes and extending in a radial manner rotates. The vane pump has a first back-pressure groove that is communicated with some of the slits to supply a back pressure from the first outlet port to the corresponding vanes and a second back-pressure groove that is communicated with other of the slits to supply a back pressure from the second outlet port to the corresponding vanes. The vanes to which the back pressure is supplied from the first back-pressure groove include the vanes in pump chambers into which the hydraulic fluid is sucked from the second inlet port. 1. A vane pump comprising:a cam ring defining a rotor chamber into which a first inlet port, a second inlet port, a first outlet port, and a second outlet port are open, the cam ring having an inner peripheral cam face having an elliptical shape;a rotor rotatably disposed in the rotor chamber such that an outer peripheral surface of the rotor faces the inner peripheral cam face, the rotor having a plurality of slits opening on the outer peripheral surface of the rotor and extending in a radial manner; anda plurality of vanes housed at least partially in the respective slits, the plurality of vanes configured to rotate together with the rotor, and the plurality of vanes defining a plurality of pump chambers between the inner peripheral cam face and the outer peripheral surface of the rotor, whereina first pressure transition step in which a fluid sucked into the pump chambers from the first inlet port is discharged into the first outlet port and a second pressure transition step in which a fluid sucked into the pump chambers from the second inlet port is discharged into the second outlet port are performed at the same time as the rotor rotates ...

Rotary Cylinder Piston Compressor Pump and Compressor with Rotary Cylinder Piston Compressor Pump

A rotary cylinder piston compressor pump is provided, including a rotating shaft (), a piston () and a cylinder (). A rotating shaft hole () is provided in the rotating shaft (). An oil guiding channel, provided in the cylinder (), communicating with the rotating shaft hole (). A recess () is formed in the inner end face of the cylinder (). An oil path () sealed relative to a compression cavity () of the cylinder () is formed between the recess () and the piston (). The oil path () between the recess () and the piston () is communicated with an oil path () between the piston () and the rotating shaft () and is communicated with the oil guiding channel by means of an oil returning channel. Also provided is a compressor including the compressor pump. 1234212421. A rotary cylinder piston compressor pump , comprising a rotating shaft () , a piston () and a cylinder () , a rotating shaft hole () being provided in the rotating shaft () , and an oil guiding channel , provided in the cylinder () , communicating with the rotating shaft hole () ,{'b': 45', '4', '61', '49', '4', '45', '3', '61', '45', '3', '62', '3', '2, 'wherein a recess () is formed in an inner end face of the cylinder (), an oil path () sealed relative to a compression cavity () of the cylinder () is formed between the recess () and the piston (), and the oil path () between the recess () and the piston () is communicated with an oil path () between the piston () and the rotating shaft () and is communicated with the oil guiding channel by means of an oil returning channel,'}{'b': 46', '4', '46', '45', '4, 'the oil returning channel comprises a cylinder oil hole () provided on the cylinder (), and the cylinder oil hole () penetrates through a bottom of the recess () and an outer surface of the cylinder ().'}2442474247464742. The rotary cylinder piston compressor pump as claimed in claim 1 , wherein the cylinder () comprises a cylinder short shaft () claim 1 , the oil returning channel further comprises a ...

PRESSURE SENSOR DEVICE AND ELECTRICALLY POWERED PUMP

A pressure sensor device for an electrically powered pump includes a pressure sensor that measures a pressure of a fluid inside the electrically powered pump, first and second terminals that project from the pressure sensor in a first direction extending toward one side in the horizontal direction, a third terminal that projects from the pressure sensor in a second direction extending toward another side in the horizontal direction, a fourth terminal that projects from the pressure sensor in the second direction and that is electrically connected to the second terminal; a first capacitor that is located on one side, in the horizontal direction, of the pressure sensor and that is connected between the first terminal and the second terminal, and a second capacitor that is located on another side, in the horizontal direction, of the pressure sensor and that is connected between the third terminal and the fourth terminal. 18-. (canceled)9. A pressure sensor device for an electrically powered pump , the pressure sensor device comprising:a pressure sensor to measure a pressure of a fluid inside the electrically powered pump;a first terminal and a second terminal that project from the pressure sensor in a first direction that extends to one side in a horizontal direction;a third terminal that projects from the pressure sensor in a second direction that extends to the other side in the horizontal direction;a fourth terminal that projects from the pressure sensor in the second direction and is electrically connected to the second terminal;a first capacitor that is disposed on one side of the pressure sensor in the horizontal direction and is connected between the first terminal and the second terminal; anda second capacitor that is disposed on the other side of the pressure sensor in the horizontal direction and is connected between the third terminal and the fourth terminal.10. The pressure sensor device according to claim 9 , wherein an angle defined by the first direction ...

Internal Gear Pump

An internal gear pump comprises an internal gear, a pinion eccentrically positioned in the internal gear and configured to mesh with the internal gear, a cover configured to close an installation space of the internal gear pump, and positioned on end sides of the pinion and the internal gear, a pump outlet leading through the cover, and a non-return valve positioned in the pump outlet in the cover and configured to open to allow flow out of the internal gear pump, and further configured to shut to disallow a return flow through the pump outlet into the internal gear pump.

VARIABLE VANE PUMP WITH COMMUNICATION GROOVE IN THE CAM RING

A vane pump in which oil is drawn from at least one side, in an axial direction, of a cam ring and is discharged from at least the one side, in the axial direction, of the cam ring, the vane pump including: a portion defined by a groove formed on an inner circumference surface of the cam ring, the groove extending along a circumferential direction of the inner circumference surface and arranged in a position including a middle of an axial direction width on the inner circumference surface in an oil suction section or an oil discharge section of the cam ring, the groove being formed so that a depth of the groove is constantly shallower from a mid-point, in the circumferential direction, of the groove to both ends of the groove. 1. A vane pump in which oil is drawn from at least one side , in an axial direction , of a cam ring and is discharged from at least the one side , in the axial direction , of the cam ring , the vane pump comprising:a portion defined by a groove formed on an inner circumference surface of the cam ring, the groove extending along a circumferential direction of the inner circumference surface and arranged in a position including a middle of an axial direction width on the inner circumference surface in an oil suction section or an oil discharge section of the cam ring, the groove being formed so that a depth of the groove is constantly shallower from a mid-point, in the circumferential direction, of the groove to both ends of the groove.2. The vane pump as claimed in claim 1 , wherein:the groove is a cut groove.3. The vane pump as claimed in claim 1 , wherein:the groove is provided in both of the oil suction section and the oil discharge section on the inner circumference surface of the cam ring.4. The vane pump as claimed in claim 1 , wherein:the oil is drawn from both sides, in the axial direction, of the cam ring, and is discharged from both sides, in the axial direction, of the cam ring, andthe groove is formed at a circumferential portion ...

CARTRIDGE VANE PUMP

The cartridge vane pump includes a first connection channel that connects a first discharge port and a first discharge channel and a second connection channel that connects a second discharge port and a second discharge channel. An O-ring is provided on an outer circumference of a circular tube portion, the O-ring blocks communication between the first connection channel and the second connection channel. 1. A cartridge vane pump accommodated in an accommodating concave portion formed in a body of a fluid pressure device 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 slits formed in a radiating pattern so as to have opening portions at an outer circumference of the rotor;vanes respectively inserted into the slits in a freely slidable manner;a cam ring configured to have an inner circumference cam face with which tip end portions of the vanes are brought into sliding contact;pump chambers defined between the rotor, the cam ring, and the adjacent vanes;a cover member brought into contact with one end surfaces of the rotor and the cam ring, the cover member being fixed to the body;a side plate brought into contact with other end surfaces of the rotor and the cam ring;first and second discharge ports formed in the side plate, the first and second discharge ports being configured such that working fluid discharged from the pump chambers is guided thereinto; andan adapter formed with connection channels for respectively connecting the first and second discharge ports formed in the side plate and first and second discharge channels formed in the body, wherein a main body portion configured to have a contact surface and an annular surface, the contact surface being brought into contact with the side plate, and the annular surface being configured to face a bottom surface of the accommodating concave portion and', 'a circular tube portion ...

ELECTRIC GEAR PUMP WITH SPECIFIC PROPORTIONS FOR THE FLUID PASSAGES

The motor comprises an internal rotor having an external lob; an external rotor outside the internal rotor and having an internal lob engaging the external lob; and an inlet port and an outlet port. An inner diameter of the inlet port is less than a diameter of a dedendum circle of the internal lob, and an outer diameter of the inlet port is greater than a diameter of a dedendum circle of the external lob. An inner diameter of the outlet port equals the diameter of the dedendum circle of the internal lob. An outer diameter of the outlet port equals the diameter of the dedendum circle of the external lob. The inner diameter of the inlet port is less than the inner diameter of the outlet port. The outer diameter of the inlet port is greater than the outer diameter of the outlet port. 1. A motor , comprising:an internal rotor having an external lob;an external rotor disposed outside the internal rotor and having an internal lob formed to be engaged with the external lob; andan inlet port and an outlet port that are separated from each other using an inner circumference surface and an outer circumference surface acting as a boundary in the radial direction,wherein an inner diameter of the inlet port based on the inner circumference surface is less than a diameter of a dedendum circle of the internal lob,wherein an outer diameter of the inlet port based on the outer circumference surface is greater than a diameter of a dedendum circle of the external lob,wherein an inner diameter of the outlet port is the same as the diameter of the dedendum circle of the internal lob,wherein an outer diameter of the outlet port is the same as the diameter of the dedendum circle of the external lob,wherein the inner diameter of the inlet port is less than the inner diameter of the outlet port, andwherein the outer diameter of the inlet port is greater than the outer diameter of the outlet port.2. The motor of claim 1 , further comprising a housing accommodating a stator and a rotor core ...

FLUID PUMP

A pump housing receives an outer rotor and an inner rotor. A joint member couples between a rotatable shaft and the inner rotor to transmit a rotational torque from the rotatable shaft to the inner rotor. A radial bearing is shaped into a cylindrical tubular form. A cylindrical inner peripheral surface of the radial bearing rotatably and slidably supports the rotatable shaft. A cylindrical outer peripheral surface of the radial bearing rotatably and slidably supports an inner peripheral surface of the inner rotor. A lubrication groove is formed in the cylindrical outer peripheral surface of the radial bearing and accumulates fluid, which is present in an inside of the pump housing. 1. A fluid pump comprising:an inner rotor that is shaped into a cylindrical tubular form and has a plurality of external teeth;an outer rotor that has a plurality of internal teeth for meshing with the plurality of external teeth;a pump housing that receives the outer rotor and the inner rotor and forms a plurality of pump chambers between the plurality of internal teeth and the plurality of external teeth, wherein each of the plurality of pump chambers draws and compresses fluid by changing a volume of the pump chamber; a high pressure passage, which conducts the fluid discharged from each corresponding one of the plurality of pump chambers; and', 'an inside of the pump housing;, 'a rotatable shaft that is placed to extend over both ofa joint member that couples between the inner rotor and the rotatable shaft to transmit a rotational torque of the rotatable shaft to the inner rotor; anda radial bearing that is shaped into a cylindrical tubular form, wherein the radial bearing rotatably and slidably supports the rotatable shaft through a cylindrical inner peripheral surface of the radial bearing and rotatably and slidably supports an inner peripheral surface of the inner rotor through a cylindrical outer peripheral surface of the radial bearing, and wherein at least one lubrication groove ...

PUMP DEVICE

A groove () extending from a start point of a discharge port () in a direction opposite to rotation direction of a vane () is formed. A first end portion (E) of this groove is connected to the start point of the discharge port (). When a front-side vane () in a rotation direction of a driving shaft () is positioned at the start point of the discharge port (), a second end portion (S) of the groove is positioned at a rear side in the rotation direction of the driving shaft () with respect to a rear-side vane (), and communicates with a suction port (). A part of working fluid in a front-side pump chamber () can be introduced into a rear-side pump chamber () that communicates with the suction port (). Excessive pressure increase of the front-side pump chamber () can be lessened, thereby suppressing pulsation phenomenon. 1. A pump device comprising:a driving shaft; the rotor is driven and rotated by the driving shaft, and has a plurality of slits in a circumferential direction of a rotation axis of the driving shaft,', 'the plurality of vanes are movably set in the respective slits, and', 'the cam ring is formed into a ring shape, and forms a plurality of pump chambers by the rotor and the plurality of vanes; and, 'a pump element having a rotor, a plurality of vanes and a cam ring, wherein'} the pump element accommodating space accommodates therein the pump element,', 'the suction port faces and opens to a suction region where volumes of the pump chambers increase according to rotation of the driving shaft,', 'the suction passage is connected to the suction port, and supplies working fluid to the suction port according to the rotation of the driving shaft,', 'the discharge port faces and opens to a discharge region where the volumes of the pump chambers decrease according to the rotation of the driving shaft,', 'the discharge passage is connected to the discharge port, and discharges the working fluid from the discharge port according to the rotation of the driving ...

SCROLL COMPRESSOR HAVING NOISE REDUCTION STRUCTURE

Disclosed herein is a scroll compressor including a casing, a drive motor arranged in the casing, a shaft coupled to the drive motor, a main frame arranged under the drive motor, a fixed scroll arranged under the main frame, an orbiting scroll arranged between the main frame and the fixed scroll and engaged with the fixed scroll to form a compression chamber with the shaft eccentrically coupled to the orbiting scroll, a discharge cover coupled to the fixed scroll to form a closed space, a discharge port formed in the fixed scroll to connect the compression chamber and the closed space, and a discharge hole passing through the main frame and the fixed scroll, wherein an inlet and an inner portion of the discharge hole have different cross-sectional areas. The scroll compressor can reduce the noise caused by movement of the refrigerant by improving the structure of the discharge holes. 1. A scroll compressor comprising:a casing;a drive motor included in the casing;a rotary shaft rotatable by the drive motor;a main frame supporting the rotary shaft;a fixed scroll connected to the main frame;an orbiting scroll arranged between the main frame and the fixed scroll and eccentrically connected to the rotary shaft, the orbiting scroll configured to orbit relative to the fixed scroll and define a compression chamber in cooperation with the fixed scroll;a discharge cover disposed on a first surface of the fixed scroll to define a closed space between the discharge cover and the first surface of the fixed scroll;a discharge port defined at the fixed scroll and configured to fluidly connect the compression chamber to the closed space; anda discharge hole defined through the main frame and the fixed scroll and configured to fluidly connect the closed space to an outside of the main frame,wherein opposite ends of the discharge hole have cross-sectional areas that are different from a cross-sectional area of an inner portion of the discharge hole between the opposite ends.2. The ...