Пластинчатый насос

Изобретение м.б. использовано для перекачки густых масс из открытых емкостей . Цель изобретения - повышение КПД и надежности насоса в работе. Корпус со стороны полости всасывания выполнен открытым . В каналах нагнетания установлены обратные клапаны 8. Профилированный ротор 4 выполнен в виде двухза.ходного винта . Подпружиненные пластины 6 установлены с возможностью осевого перемещения и образования с винтом рабочих камер 7. Каждая пластина 6 имеет выполненный заодно с ней поршень со сквозными осевыми каналами 10. В корпусе 1 имеются дополнительные камеры 11, в к-рых размещены поршни со штоками, жестко связанные с поршнями пластин 6 с образованием поршневой и П1то- ковой полостей 14 и 15. На выходе каналов установлены обратные клапаны 16. образующие с клапанами 8 замкнутый участок 17. Полость 14 сообщена с атмосферой. Полость 15 сообщена каналами 18 и 19 с участком 17. В канале 19 установлен дроссель 20. 1 з.п. ф-лы, 2 ил. /-/ (Л 1С ее ...

Hocheffiziente Konstantförderflügelzellenpumpe

Eine Flügelzellenpumpe für ein automatisches Getriebe umfasst ein Gehäuse, das von der Achse der Getriebeeingangswellenachse beabstandet ist, und ist durch eine Kette oder einen Getriebezug angetrieben, die/der durch die Drehmomentwandlernabe angetrieben ist, oder ist auf der und um die Achse der Getriebeeingangswelle herum angeordnet und bei Motordrehzahl angetrieben. Die Flügelzellenpumpe umfasst ein Paar Steuerscheiben, die sich auf den Stirnflächen eines Pumpenkörpers befinden, der eine zylindrische Kammer aufweist, die einen exzentrisch angeordneten Rotor aufnimmt, der in einer außeraxialen Anordnung mit einer Flanschwelle gekoppelt ist. Der Rotor umfasst eine Vielzahl von radialen Schlitzen, welche eine gleiche Vielzahl von Flügeln aufnehmen. Die äußeren Enden oder Kanten der Flügel stehen in Kontakt mit der Wand der zylindrischen Kammer und die inneren Enden oder Kanten stehen in Kontakt mit einem Paar Flügelringen, das innerhalb von Vertiefungen in den Enden des Rotors aufgenommen ...

Rotary vane pump

A rotary vane pump comprising a stator (10) having a cylindrical surface; a rotor (2) which is positioned relative to the stator to define a fluid chamber between the rotor and the stator, the rotor being rotatable about a longitudinal axis (L) and having a number of radially extending slots therein; a vane (11) slidably mounted in each slot and biased towards the fluid chamber and into engagement with the surface of the stator, the vanes reciprocating in their respective slots as the rotor rotates about the stator; a first fluid passage (36) providing fluid at a first pressure from a fluid inlet to the fluid chamber; a second fluid passage taking fluid at a second pressure higher than the first pressure from the fluid chamber to a fluid outlet; and a electrically operated valve (15) positioned adjacent the fluid chamber and fluidly connecting the first and second fluid passages on detection of a predetermined condition. Energy saving design.

ROTARY PUMP

ROTARY FLUID DEVICES

ROTARY FLUID DEVICES A rotary fluid motor or pump device having opposing cam surfaces and a rotor with vanes shiftable within vane slots of the rotor and riding on the cam surfaces is disclosed. The device includes at least eight vane members circumferentially spaced about the rotor and cam surfaces having diametrically opposed slopes extending over arcs of at least about 130.degree., with means for the entrance or exit of fluid along the entire length of each such slope of 130.degree. or more. At least six chamber spaces between vanes of the device always function to receive fluid and at least six such chamber spaces always function to exit fluid from the device, regardless of the rotary orientation of the rotor. A device for hydraulically assisting the steering vehicles is provided wherein rotary valve elements and rotary motor elements are concentrically mounted about a steering shaft.

SCROLL TYPE FLUID DISPLACEMENT APPARATUS WITH CENTRIFUGAL FORCE BALANCEWEIGHT

SCROLL TYPE FLUID DISPLACEMENT APPARATUS With CENTRIFUGAL FORCE BALANCEWEIGHT A scroll type fluid displacement apparatus is disclosed. The scroll type fluid displacement apparatus includes a housing, a fixed scroll and an orbiting scroll both of which having an end plate from which wrap extends. Both wraps interfit to make a plurality of line contacts to define at least one sealed off fluid pocket. A drive shaft is rotatably supported by the housing, and has a drive pin which is radially offset from the axis of the drive shaft. The end plate of orbiting scroll has a boss, and a bushing is rotatably supported within the boss. The bushing has an eccentric hole disposed eccentrically with respect to the center of the bushing, and the drive pin is inserted in the eccentric hole. The bushing also has a balanceweight which causes a centrifugal force which is slightly larger than the centrifugal force which arises by orbital motion of the orbiting scroll and other orbital parts to improve the ...

ROTARY FLUID DEVICES

Kapselwerk, insbesondere Kurvenkapselwerk

Förderpumpe

Rotationsverdränger

РОТОРНЫЙ ПОРШНЕВОЙ ДВИГАТЕЛЬ

Изобретение относится к машиностроению и касается роторного поршневого двигателя. Двигатель включает поршневые камеры, выполненные как компрессорная и приводная камеры в тороиде прямоугольного сечения, образованном двумя соосными цилиндрами и двумя параллельными торцевыми поверхностями. Внешним цилиндром и торцевыми поверхностями образован статор, а внутренний цилиндр тороида изнутри соединен с валом, а снаружи оборудован двумя диафрагмами, которые пересекают тороид по радиусу, образовывая две автономные, компрессорную и приводную, поршневые камеры, в которые дополнительно входят секторальные, шихтованные, прижатые к диафрагме подвижные в направлении оси вала поршневые уплотняющие перемычки. Поршневые камеры выполнены с возможностью уплотняться по внешнему периметру противодавлением при создании центробежной силы. Диафрагмы в каждой поршневой камере выполнены с образованием зоны касания к торцам и под углом. Двигатель оборудован запорными или перепускными клапанами в порядке, который определяет ...

Appareil hydraulique rotatif.

L'INVENTION CONCERNE UN APPAREIL HYDRAULIQUE ROTATIF. IL COMPREND UNE POMPE A AILETTES 3 AYANT UN ROTOR 5 ENTRAINE EN ROTATION, UNE PLURALITE D'AILETTES QUI SONT ENGAGEES DE FACON A POUVOIR GLISSER DANS DES RAINURES RADIALES DANS LE ROTOR ET UN ANNEAU A CAMES 10 MIS EN CONTACT GLISSANT AVEC LES AILETTES, UNE PAIRE DE CHAMBRES D'EVACUATION 15A, 15B SEPAREE INDEPENDANTES COMMUNIQUENT RESPECTIVEMENT AVEC DES OUVERTURES D'EVACUATION 12A, 12B SYMETRIQUES PAR RAPPORT AUDIT ROTOR, ET UNE SOUPAPE DE COMMANDE 4 QUI FERME LA COMMUNICATION ENTRE UNE DESDITES CHAMBRES D'EVACUATION ET UNE MACHINE HYDRAULIQUE ET RETOURNE LE FLUIDE EN EXCES DE LADITE CHAMBRE D'EVACUATION SUR LE COTE RESERVOIR. APPLICATION : DIRECTION ASSISTEE DE VEHICULES.

ENSEMBLE PALETTE-FOND STATORIQUE POUR DISPOSITIFS HYDRAULIQUES ROTATIFS

L'INVENTION SE RAPPORTE A DES DISPOSITIFS HYDRAULIQUES ROTATIFS DU TYPE POMPE VOLUMETRIQUE A STATOR ET ROTOR COAXIAUX ET A PALETTES COULISSANT AXIALEMENT DANS LE ROTOR, LE STATOR COMPORTANT AU MOINS UNE SURFACE DE FOND PRESENTANT, EN UN NOMBRE VARIABLE, DES EVIDEMENTS A RAMPES ET ZONES RECTILIGNES APPROPRIEES AU FONCTIONNEMENT, LESDITES PALETTES VENANT SUIVRE LADITE SURFACE DE FOND. L'INVENTION VISE PLUS PARTICULIEREMENT UN ENSEMBLE PALETTE-FOND STATORIQUE DANS LEQUEL LA PALETTE 1 COMPREND UNE EMBASE 2 DE CONTACT CYLINDRIQUE AVEC LES RAMPES R1, R2 DU FOND STATORIQUE, SELON UN RAYON DE COURBURE CORRESPONDANT A CELUI DE LA FRAISE UTILISEE POUR L'USINAGE DU FOND STATORIQUE, ET DES LEVRES 3 D'ETANCHEITE ET DE PLACAGE CONTRE LES ZONES RECTILIGNES DU FOND STATORIQUE. L'INVENTION PEUT S'APPLIQUER AUX MOTEURS HYDRAULIQUES.

POMPE A MOUVEMENT PERMANENT ET DEBIT ANNULABLE, POUR SYSTEME HYDRAULIQUE

L'INVENTION CONCERNE UNE POMPE A MOUVEMENT PERMANENT ET DEBIT ANNULABLE, POUR SYSTEME HYDRAULIQUE. CETTE POMPE COMPREND UN ROTOR INTERIEUR 5 ET UN STATOR 4 CONFORMES DE FACON A FORMER ENTRE EUX DEUX CAVITES INTERIEURES DIAMETRALEMENT OPPOSEES. DES PALETTES 11 SONT MONTEES COULISSANTES RADIALEMENT DANS DES ENCOCHES DU ROTOR 5. A LA BASE DE CHACUNE DE CES PALETTES, EST PREVUE UNE CHAMBRE 8 QUI EST MISE EN COMMUNICATION AVEC LE COTE REFOULEMENT 3 PAR UNE CONDUITE 7 ET UNE VANNE D'ARRET 12, DE FACON A REPOUSSER, EN FONCTIONNEMENT DE POMPAGE, LES PALETTES EN CONTACT CONTRE LE CONTOUR DE CAME 10 DU STATOR. L'INVENTION S'APPLIQUE AUX POMPES A DEBIT ANNULABLE POUR SYSTEMES HYDRAULIQUES.

Annular rotor, with segments and pallets mobile, for rotary pumps, compressing, etc

ROTARY HYDRAULIC APPARATUS

FLASQUE ANTI-FRICTION POUR POMPE OU MOTEUR HYDRAULIQUE A PALETTES

Flasque anti-friction pour pompe ou moteur hydraulique. Un ou deux flasques sont interposés entre les plateaux d'extrémité et les éléments tournants de la pompe ou du moteur. Chaque flasque comprend une face d'usure en matériau à faible coefficient de frottement butant contre le rotor, les palettes et la came annulaire. Un dispositif destiné à réduire l'usure entre le flasque et la came annulaire, lorsque celle-ci se dilate et se contracte radialement, au moment où elle subit des efforts de pression intermittents, comprend une zone de métal dur destinée à venir au contact de la came annulaire. Application aux pompes ou moteurs hydrauliques rotatifs à palettes coulissantes.

PUMP HAS HIGH PRESSURE

ROTARY PUMP OF THE TYPE HAS PALLETS

VARIABLE VOLUME TYPE VANE PUMP

PURPOSE: A variable volume type vane pump is provided to minimize energy consumption of the pump and prevent unnecessary discharge of fluid under a low pressure by changing a fundamentally excluded volume of a pump by moving a cam ring vertically depending on the change of pressure. CONSTITUTION: In a variable volume type vane pump, a cam ring(15) mounted in a pump housing(11) is formed of a rectangular body in which a vane of a rotor(18) is mounted and formed with a round space(15a). In the pump housing, a movement space(20) is formed with stoppers to restrict the distance of a vertical movement of the cam ring in contact with the upper and lower surfaces of the cam ring. A return spring(23) is disposed on the upper portion of the movement space to press the cam ring downward. A flow control valve is disposed at a discharge port of the pump housing to control an amount of the fluid discharged through the discharge port depending on the change of the internal pressure. COPYRIGHT 2000 KIPO ...

Non-Coaxial Multi-Axial Rotating Mechanism

A mechanism whereby fluid can be pumped by the addition of mechanical power to a shaft, or conversely, shaft power may be extracted from a fluid by forcing a fluid through the device, or allowing an expansion of fluid to occur, thereby producing power. The mechanism consisting of four basic components: A housing with a cylindrical interior cavity; a vane mounted concentric with the interior cavity, and having a radius such that the end of the vane touches or nearly touches the cylindrical cavity walls as the device rotates; a cylindrical hub that is smaller than the interior cavity diameter, and mounted parallel with the vane, but offset from the vane so that one side of the hub is continuously tangent, or nearly tangent with the interior of the interior housing cavity; a seal that allows the vane to move by translation and rotation relative to the cylindrical hub while preventing fluid movement between one side of the vane and the other. Since fluid flow is restricted at the tangent contact line between the two cylindrical surfaces, and fluid flow is also restricted at the tip of the vane, the device produces two fluid volumes that change volume as the mechanism rotates. 1. A rotating mechanism capable of pumping fluid from one port to another by application of power to a shaft , comprisinga) a housing having a predominantly cylindrical internal cavity containing;b) a hub that is predominantly cylindrical having a length which approximately equals the internal length of the housing cavity and having a diameter which is smaller than the internal diameter of the housing cavity but having a diameter which is greater than half the internal diameter of the housing cavity, wherec) the hub is located off center of the internal housing cavity such that the exterior of the hub and interior of the housing cavity are approximately tangent, thereby effectively reducing fluid flow at the tangent interface and;d) a vane having an axial length which approximately equals the ...

VANE CELL PUMP

Rotary fluid pump

A rotary fluid pump has a pump housing or shell (21), an inlet (35) and outlet (36) and a pump chamber in which an undilating rotor (28) forms axially off set pockets with the chamber end surfaces (50.1, 50.2) for conveying pumped medium from inlet (35) to outlet (36) and moves a gate means (31) springingly bearing with rounded nose portions (73) on the rotor vane (30) to separate a suction chamber (25) and discharge chamber (27) connected to the inlet and outlet respectively. Improved separation of the suction and discharge chamber results by providing that the vane portion (30) has a thickness (T) which varies in a circumferential direction in differently inclined vane parts and varies in a radial direction in the inclined vane parts to provide line contact with the rounded nose portion (73) throughout the radial extent of the vane portion (30) during a full revolution of the rotor (28).

Rotary vane pump

ROTARY PUMP

High pressure pumps

A high-pressure pump comprises a cam ring 7, a rotary piston 6 with radial sliding-vanes 8, and a movable cheek plate 10, and preferably also a cheek plate 4 integral with the housing 1, which plates are made of a silicon- rich alloy and manufactured by vacuum die-casting. This alloy is said to have a satisfactory structure, wear-resistance and strength. Preferably, the movable cheek plate has an axial seal 21 on the outer side thereof to define an area that is subject to the pressure of working fluid in an outlet chamber 20. ...

VANES FOR ROTARY POSITIVE-DISPLACEMENT FLUID POWER CONVERTER

... 1514845 Rotary positive displacement fluid machines RINEER HYDRAULICS Inc 8 March 1976 [13 March 1975] 09240/76 Heading F1F In a sliding-vane machine in which a radially vaned rotor 14 is mounted in a radially vaned stator 12, each vane tip 25, 33 has a convex profile, the radial extent E 1 , E 2 of which is not more than “ of the thickness of the associated vane, and the combined extent E 1 + E 2 is at least equal to the minimum radial clearance E between rotor and stator, and the maximum slope of the convex profile 25, 33 is at least equal to the maximum slope of the rotor or stator surface 18, 16 against which the respective vanes bear. The surfaces 16, 18 may be harmonic profiles based on sine curves or the rotor may be circular in section. The convex profiles of the vanes may be circular arcs.

Improvements in and relating to reversible rotary pumps

... 141,496. Melano, C., (Borgarello, Fratelli). April 3, 1919. Fixed-abutment type; packing vanes.-Relates to reversible rotary pumps of the type in which the rotor comprises a cylindrical block having radial slots carrying sliding vanes, the block being eccentrically mounted to form a crescent-shaped chamber with the casing. The cylinder C has four radial slots c in which vanes c' slide, the outer ends of which are bifurcated to carry strips L of leather secured by screws c<2>. The shaft F, F<1> is divided and is screwed at f<2>, f<3> to the cylinder, which also carries circular plates f, f<1>. Stuffing- boxes H, H<1> are provided, the whole being enclosed in casings O.

VANE-TYPE ROTARY PUMP

Hydrostatic drive

The drive comprises an adjustable positive-displacement pump, which may be a rotary one of the sliding vane type (as shown), and a pressure-limiting device. The adjusting element of the pump may be a cam ring (3) and is displaceable by a control device (9) from a position of maximum delivery to a non-delivery position. The control device and the pressure-limiting device (10), which are oppositely disposed in alignment, abut the adjusting element. The control device may comprise a fluid- pressure operated piston (17) and the pressure-limiting device may include an adjustable spring (11). ...

Pumps

ROTARY FLUID PUMP OR COMPRESSOR

ROTARY SLIDING VANE PUMP OR MOTOR

ROTARY PUMP

ROTARY FLUID DEVICE

A rotary fluid device including an outer housing assembly and an inner rotating arrangement adapted to rotate relative to the outer housing assembly, the outer housing assembly including a rotor housing and the inner rotating arrangement including a rotor dimensioned to rotatably fit within the rotor housing. One of the rotor and the rotor housing include lobes extending in a radial direction relative to respective inner and outer circumferential surfaces and the other of the rotor and the rotor housing includes followers and follower recesses in which the followers are moveably located. In some examples, the follower recesses are adapted such that in at least the extended condition fluid pressure at underside facing surfaces of the followers toward the follower recesses are substantially hydrostatically balanced with a fluid pressure at opposing top facing surfaces of the followers substantially exposed to the chambers. In some examples, three pressure zones may be defined between the ...

Multiple machine being able to be used as paddle wheel (turbines), suction and force pump, compressing, transmission of force, etc

Pompe à palette.

La pompe à palette (1) comporte un arbre muni d'un coulisseau (19) essentiellement quadrangulaire. La palette (4) unique de la pompe à palette est munie d'une rainure de guidage rectiligne (5), qui s'adapte sur le coulisseau (19); Un orifice de refoulement supplémentaire (11) est prévu afin d'éviter les coups de bélier dans l'huile.

DISPOSITIF ELECTROHYDRAULIQUE ROTATIF

L'invention se rapporte à un dispositif électro-hydraulique rotatif du type pompe volumétrique à stator et rotor et à palettes coulissantes dans le rotor. Conformément à l'invention le rotor et le stator sont coaxiaux et les palettes sont coulissantes axialement, parallèlement à l'axe du rotor ou axe longitudinal du dispositif, un espace intermédiaire entre rotor et stator, susceptible d'être cloisonné en chambres de volumes différents par les palettes à coulissement axial, étant d'un écart axial longitudinal variable circulairement et en partie défini par une surface continue du stator. L'invention s'applique aux freins et ralentisseurs ainsi qu'aux moteurs et aux pompes.

Rotary cell pump for the conveying of sausage stuffing and the like

Vane pump

VINGAR FOR KRAFTMASKIN

DISPLACEMENT-TYPE ROTARY MACHINE

PURPOSE: To facilitate multistage constitution and eliminate sliding portions from a blade and a cylinder, by providing one or plural intermediate cylinders between a cylinder and a rotary shaft and implanting the blade in the rotary shaft so that the blade extends through the intermediate cylinder and can slide and swing. CONSTITUTION: When a rotary shaft 2 is rotated clockwise, a working fluid in a blade chamber 25 defined by a cylinder 1, an intermediate cylinder 4 and a blade 3 is compressed and discharged through an outlet port 18 and another working fluid is sucked into another blade chamber 26 through an inlet port 16. When the blade 3 reaches an upper half part, a working fluid in another blade chamber 27 is discharged through another outlet port 19 and another working fluid is sucked into the blade chamber 27 through another inlet port 17. At that time, the cylinder 1 and the intermediate cylinder 4 slide in grooves 10, 11, 12, 13 provided in side members 5, 6. According to this ...

КОМПРЕССОР, РОТОРНАЯ МАШИНА

... 1. Компрессор, содержащий корпус с нагнетательным и всасывающим патрубками и торцовыми крышками, в котором эксцентрично установлен ротор, имеющий продольный диаметральный паз с установленными в нем двумя лопастями, кинематически связанными между собой, ротором и корпусом, отличающийся тем, что лопасти исполнены цельнометаллическими, снабженными на концах, касающихся корпуса, компрессионными валиками с одной степенью свободы, вращением вокруг собственной оси, сточенными по радиусу образующей внутренней поверхности корпуса и утопленными в тело лопастей в равнорадиусное отверстие (лоно), сточенное за диаметральную ось на 1 мм. ! 2. Компрессор по п.1, отличающийся тем, что трущаяся пара, компрессионный валик - лоно лопасти, покрыта антифрикационным с высокой износоустойчивостью композитным материалом на основе фторопласта. ! 3. Роторная машина на основе компрессора по пп.1 и 2, отличающая тем, что ротор разделен вдоль пополам и получившиеся два полуэксцентрика (лопасти) разнесены симметрично ...

РОТОРНАЯ МАШИНА

Использование: в области насосостроения жидкостей, в том числе содержащих твердые частицы. Сущность изобретения: в роторной машине, у которой в расточке статора установлена с возможностью вращения кольцевая вставка, имеющая на внутренней поверхности упоры, последние периодически контактируют с лопастями, а лопасти имеют жесткую конструкцию. В одном из вариантов лопасти выполнены в виде цилиндрических роликов. 1 з.п. ф-лы, 4 ил.

Пластинчатый насос

DAEMPFUNGSANORDNUNG FUER EINE MASCHINE MIT ROTIERENDEN IN SCHLITZEN GEFUEHRTEN SCHIEBERN

Hydraulic delivery device

The invention relates to a hydraulic delivery device or pump with a displacement unit mounted in a housing and set in rotation through a drivable shaft. A rotor 26 is mounted rotationally secured on the shaft in a pump chamber 14. Rotation of the rotor produces at least a first region (suction region) with increasing volume and at least a second region (pressure region) with reducing volume. The first region is connected to a suction connection 28 of the delivery device and the second region is connected to a pressure connection 32 of the delivery device. The device has a regulator for setting or restricting a volume flow delivered by the delivery device. The pump chamber 14 is defined on one side by a plate 54 which produces a hydraulic control function of the delivery device 10, which acts as a sealing device for sealing regions of the delivery device 10 which are under different pressures, and which effects an axial positioning of the shaft 24 after fitting and centring the plate 54.

HYDROSTATIC DRIVE

Rotary vane pump

ROTARY PUMP FUER LIQUID.

Cap work, in particular curve cap work

Double pump to water and oil

Synchronized multi-cylinder hydraulic motor comprises casing constituted by stator closed by cheek webs rotating in bearing bushes engaging stop washers, and rotating or fixed shaft with radial housing in which valve paddles displace

Le moteur hydraulique comporte : soit un carter tournant, soit un carter fixe suivant sa cylindrée, constitué par un stator (76) dans lequel sont usinés des évidements (71), fermé par deux flasques (74, 75) tournant sur des bagues-paliers (39, 40) coopérant avec des rondelles butées axiales (41, 42); un arbre creux (80) tournant ou fixe selon la cylindrée du moteur; des palettes-valves (70) se déplaçant dans un logement radial usiné dans ledit arbre (80); des canalisations hydrauliques d'alimentation HP/ BP (72, 73) et de retour de fuites (87, 88); des canalisations de commande de mise en roue libre (82, 83). Le moteur s'applique à tous les cas de transmission de puissance de moins de 500 mDaN à plus de 1. 000. 000 mDaN de couple avec des vitesses pouvant être élevées ou faibles ete très faibles.

Vaso-compressor-pulverizer

POMPE ROTATIVE DU TYPE A PALETTES

L'INVENTION CONCERNE UNE POMPE COMPRENANT PLUSIEURS ELEMENTS DE POMPAGE, TELS QUE DES PALETTES 54-72, QUI TOURNENT AVEC UN ROTOR 50 ET ENTRENT EN CONTACT AVEC UNE SURFACE INTERIEURE D'UNE CAME ANNULAIRE 22 DE FACON A DEFINIR DES CHAMBRES DE POMPAGE 76-94 QUI CONTIENNENT DU LIQUIDE ETOU DE L'AIR. LORSQUE LES CHAMBRES DE POMPAGE SE DEPLACENT LE LONG D'UN ARC D'ENTREE 26, 28, DU LIQUIDE PENETRE PAR UN ORIFICE DANS LES CHAMBRES CORRESPONDANTES, CET ORIFICE ETRANGLANT LE DEBIT DE LIQUIDE A UNE VALEUR INSUFFISANTE POUR UN REMPLISSAGE DES CHAMBRES EN LIQUIDE PENDANT LA ROTATION DU ROTOR A VITESSE ELEVEE. QUAND LES CHAMBRES SE DEPLACENT LE LONG D'UN ARC DE SORTIE 30, 32 QUI A UNE PENTE CONSTANTE, LE VOLUME DE CHAQUE CHAMBRE EST REDUIT; LORSQUE LA PRESSION DU FLUIDE DANS UNE CHAMBRE DEPASSE LA PRESSION DE DECHARGE DE LA POMPE, UNE SOUPAPE D'ARRET CORRESPONDANTE 122-140 S'OUVRE ET DU FLUIDE EST DECHARGE DE LA CHAMBRE DE POMPAGE ASSOCIEE.

ENTRAINEMENT HYDROSTATIQUE COMPRENANT, NOTAMMENT, UNE POMPE A PALETTES REGLABLE

L'INVENTION CONCERNE LES ENTRAINEMENTS HYDROSTATIQUES COMPORTANT NOTAMMENT UNE POMPE A PALETTES REGLABLE, UN DISPOSITIF LIMITEUR DE PRESSION ET UN ELEMENT DE REGLAGE DEPLACE PAR UN DISPOSITIF DE COMMANDE ET INFLUENCANT LE DEBIT DE LA POMPE. SELON L'INVENTION, L'ELEMENT DE REGLAGE 3 EST UN ANNEAU-CAME ATTAQUE, DE PART ET D'AUTRE, PAR LE DISPOSITIF DE COMMANDE 9 ET LE DISPOSITIF LIMITEUR DE PRESSION 10.

Hydropneumatic or hydraulic liquid flow pressure intensifier for e.g. setting operation, has tank containing liquid supplied through gravity for operation of intensifier, and connected to assembly of gear, motor and cam by connecting part

L'invention concerne un dispositif permettant de profiter de l'effet produit par un multiplicateur de pression oléopneumatique ou tout hydraulique sur l'élévation de pression d'un liquide, sans en avoir l'inconvénient qui en est le faible débit. II est constitué d'un engrenage (1) dont les roues dentées (A) (A') sont usinées pour recevoir des pâles (4) (4')...etc. L'ensemble est mis en rotation autour de deux cames fixes (5) (5') par l'intermédiaire d'un moteur électrique (3) lié à une roue dentée (A) ou (A') par un accouplement (2). Ce mécanisme est assemblé dans un corps (6) fermé par un flasque (8). Le dispositif est alimenté en liquide par gravité grâce à un réservoir (10) relié à l'ensemble par une pièce de liaison (11).

Rotary pump for liquids

Hydraulic advancing unit, eg for use in vehicles

Dispositif comprenant un module de refoulement disposé dans un carter, pouvant être entraîné en rotation par un arbre commandé et comprenant un rotor solidarisé en rotation avec ce dernier et disposé dans une chambre de pompage qui est délimitée par des surfaces orientées radialement par rapport à l'arbre. La chambre de pompage est délimitée sur un côté par une plaque (54) qui assume une fonction hydraulique de commande du dispositif de transport, qui représente un système d'étanchéité entre les zones du dispositif qui sont sous des pressions différentes et qui assure une fixation axiale de la position de l'arbre (24) après son montage et son centrage. Application notamment aux pompes volumétriques de commande d'une direction assistée de véhicule.

Improvements with the rotary pallet machines

Sophisticated positive-displacement pump

Rotary vane pump

A ROTARY COMPRESSOR

PURPOSE: To make a cylinder, a roller and a vane etc. to become strongly, antiscaff and anti-wear. COPYRIGHT: (C)1976,JPO&Japio ...

Роторная гидромашина

ПЛACTИHЧATЫЙ HACOC

Hocheffiziente Konstantförderflügelzellenpumpe

Konstantförderflügelzellenpumpe (30), in Kombination umfassend: ein Gehäuse (32), das geeignet ist, einen ringförmigen Pumpenkörper (40), der eine zylindrische Kammer (42) definiert, die eine umlaufende Wand (44) aufweist und ein Paar von Steuerscheiben (34, 46), die jeweilige axiale Enden der zylindrischen Kammer (42) definieren, aufzunehmen; einen drehend antreibbaren Flügelrotor (50), der exzentrisch in der zylindrischen Kammer (42) angeordnet ist und der mit der umlaufenden Wand (44) der zylindrischen Kammer (42) eine sichelförmige Pumpkammer (60) definiert, wobei der Flügelrotor (42) eine Vielzahl von in Umfangsrichtung beabstandeten, radialen Schlitzen (54) und an jedem Ende einen axial verlaufenden, vorstehenden Umfangsvorsprung (62) definiert, die gegenüberliegende, flache Vertiefungen (64) definieren, wobei eine Vielzahl von Flügeln (56) in den Schlitzen (54) angeordnet ist, wobei die Flügel (56) Außenkanten (56a) aufweisen, die geeignet sind, mit der umlaufenden Wand (44) der ...

Low consumption double hydraulic motor with pump - has rotor with fluid system forming two motors by pressure distribution

The arrangement has a stator, rotor, and displacer with sealing blades and housing. The sliders are arranged on the outside circumference and sealed against the low pressure side. The pressures are arranged so that behind the displacer exists a pressure equal to that in the working chamber of the hydraulic motor. Simultaneously, pressurised fluid is used at the outside circumference at the points where the displacers are retracted. This forms a second hydraulic motor, the rotor parts acting here as displacers.

SLIDEGATE VALVE STATOR WALL COMBINATION FOR HYDRAULIC TURNING PISTONS.

FLUID POWER CONVERTER

Suction-pressure type blade rotary pump

A suction-press type pump is composed of internal casing, external casing, movable knob in longitudinal slot on inner surface of external casing, two external rings in contact with blades between internal and external casings, and internal ring in contact with other ends of blades. Said external ring has slot for accepting the movable knob. A set of symmetrical trigger units inside the external ring has the connecting plate hung to the ring and the gear with static knob in the slot of internal casing.

Sliding vane pump rotor and sliding vane pump

Harness with centered pallets

ROTARY HYDRAULIC APPARATUS

Pump for metering a liquid additive for a selective catalytic reduction device

A device providing a dosed supply of a liquid includes: a pump configured to deliver the liquid and having a pump housing with an inlet and an outlet; an eccentric on the pump housing; and a deformable diaphragm between the pump housing and the eccentric, the deformable diaphragm and the pump housing delimiting a delivery path from the inlet to the outlet and forming a seal of the delivery path. The seal is displaceable along the delivery path, by a movement of the eccentric, in a delivery direction from the inlet to the outlet to deliver the liquid. The pump is configured such that within the pump a friction torque that must be overcome for the eccentric to move is greater than a maximum pressure torque that can be generated by pressurized liquid in the delivery path, so as to prevent movement of the eccentric counter to the delivery direction.

VANE FOR USE IN ROTARY FLUID PUMP

PURPOSE: To improve wear-resisting performance of a vane used in a rotary fluid pump, by applying a coating layer of a material having a high hardness in a groove formed in the top sliding face of the vane. CONSTITUTION: A coating layer 32 of a material having a high hardness is applied in a groove formed in the top end face 31 of a vane 3 over the entire length thereof excluding the opposite end portions 33, 33 of the same. Such a vane has an extremely high wear-resisting performance, and at the same time, can be protected against collapsing at end portions of the coating layer applied at the top sliding face of the vane. As the material for the coating layer 32, it is preferable to use a non-conductive material having a high hardness such as ceramics and cermet. COPYRIGHT: (C)1982,JPO&Japio ...

Flügelzellenpumpe

Vane type hydraulic pump - has eccentre mounted width adjustable vanes and incorporated reduction gear box

The hydraulic pump or motor unit includes top mounted liquid contg. tank from which a downcomer pipe line turns into a horizontal plane and incorporates an eccentric modulated vane type rotor. The rotor vane width is adjustable, and a reduction gearbox may be incorporated in the unit.

DREHKOLBENPUMPE

VANE-STATOR WALL COMBINATION FOR ROTARY HYDRAULIC DEVICES

Kurvenring für eine Flügelzellenpumpe

Compressor and pump

Main components of version I (drawing No.:1-2) design of a compressor and/or of a pump with axially rotating slide are: Part 1: casing shell, bottom 1-of, 2: casing shell, top - front 1-of, 3: casing shell, top rear 1-of, 4: rotor 1-of, 5: slide 1-of, 6: pressure valve 1-of. Version II: Main components of version II (drawing No.:2-2) design of a compressor and/or of a pump with radially rotating slide are: Part 1: casing 1-of, 2: casing cover 1-of, 3: drum shaft 1-of, 4: annular drum 1-of, 5: connecting flange 1-of, 6: slide guide 1-of, 7: slide 1-of, 8: pressure valve 1-of. Possible use: The compressor is suitable for the compression of gaseous substances, the pump for pumping liquid substances. Advantages: Advantages of these two versions of compressors and pumps designed by me is their more economic operation. 1. The main movement is the rotary movement, that is to say the movement does not have to be translated. 2. The intake valve is dispensed with and thereby also removing the resistance ...

Positive displacement pump

CHEEK PLATE FOR SLIDING VANE MACHINE

SLIDING VANE TYPE COMPRESSOR EQUIPPED WITH AUTOMATICALLY ADJUSTING SLIDE VALVE

FLASK ANTIFRICTION METAL FOR PUMP OR HYDRAULIC ENGINE HAS PALLETS

Vane pump

Pompe à palette comprenant un arbre entraîné en rotation, qui est monté en porte-à-faux et de manière excentrée dans un couvercle de carter et dont l'extrémité libre fait saillie dans le carter et est réalisée sous forme de guide de coulisse (3) sur lequel la palette (4) est engagée par une rainure de guidage rectiligne et est guidée de façon rectiligne radialement par rapport à l'axe de l'arbre. La palette s'appuie dans les deux sens de déplacement élastiquement (ressorts 17, 18) sur le guide de coulisse (3), au moins dans la zone du point mort inférieur.

FLUID POWER CONVERTER

Vane pump

Скважинный винтовой насос

Полезная модель относится к области нефтяной промышленности и может быть использована при создании скважинных насосов для добычи нефти в осложненных условиях, в том числе для добычи высоковязкой нефти. Сущность: скважинный винтовой насос содержит корпус с входным и выходным каналами, секционную обойму с винтообразными каналами и винтообразный ротор, эксцентрично размещенный в обойме, с возможностью радиального смещения обоймы относительно ротора, размещенного на опорах, секции обоймы установлены последовательно с возможностью углового смещения их относительно друг друга, и каждая секция обоймы выполнена по форме спиральной пружины, концентрично размещенной в расточке корпуса, с возможностью образования внутри корпуса следующих друг за другом спиралевидных камер, отделенных друг от друга щелевыми уплотнениями, при этом каждая секция обоймы оснащена стопорным элементом, выполненным на роторе, и цилиндрическим промежуточным стержнем, размещенным вдоль ротора в разгрузочной канавке, выполненной в роторе, с возможностью радиального смещения промежуточного стержня относительно ротора, при этом длина разгрузочной канавки превышает длину промежуточного стержня, причем на нижнем конце корпуса установлен трубный хвостовик, проточный канал которого сообщается с входным каналом корпуса, а на боковой стенке верхнего конца корпуса перед выходным каналом выполнен радиальный отводной канал с установленным на его входе дистанционно управляемым клапаном с образованием при его открытом положении дополнительного контура циркуляции между выходным каналом корпуса и проточным каналом трубного хвостовика. Полезная модель позволяет расширить диапазон регулирования подачи и мощности за счет обеспечения гибкого регулирования в широком диапазоне гидравлических сопротивлений в области спиралевидных камер и в контуре циркуляции жидкости от входа до выхода насоса. 7 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 179 853 U1 (51) МПК F04C 2/107 (2006.01) F04C 2/344 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ...

Control of the vanes of a vane cell machine

The invention relates to the control of the vanes of vane machines by means of a disk-shaped control link arranged inside a divided rotor, which control link is connected to the housing of the machine by means of a central axle in alignment with the rotor shaft and takes on the guidance of the vanes when the rotor rotates relative to the housing track.

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.

Rotary compressor having gate axially movable with respect to rotor

A rotary compressor having a housing and a rotor positioned within an internal cavity of the housing. The rotor being configured to rotate about a rotor axis of rotation eccentric to a housing longitudinal axis. A gate is also provided that is slidably mounted therewith the rotor and movable axially about and between a first position, in which a distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor. The distal end of the gate being constrained to be spaced proximate from the inner wall surface of the housing as the rotor rotates about the rotor axis of rotation.

Vacuum control in a vacuum filler without external air supply

A conveyor system for a filling machine and a method of conveying pasty mass with a corresponding conveyor system and a corresponding filling machine, including a housing with a vacuum opening and a vacuum pump as well as a suction line for generating a vacuum in the conveyor system. A valve means and at least one pressure sensor for measuring the pressure in the suction line and/or in the conveyor system are provided. A control means controls the vacuum in the conveyor system or the suction line, respectively, wherein the cross-section of the suction line is adjusted in response to the measured pressure via the valve means.

Variable Displacement Pump

A variable displacement pump includes: side walls provided on both sides of the cam ring in an axial direction; and an introduction passage which is formed on one of the separation walls across which the hydraulic chambers pass when the hydraulic chambers are moved from the suction portion to the discharge portion, which is arranged to shut off a connection between one of the hydraulic chambers and the control hydraulic chamber by an axial end surface of the cam ring when the cam ring is in a maximum eccentric state, and which is arranged to connect the one of the hydraulic chambers and the control hydraulic chamber by a movement of the cam ring in the direction to decrease the eccentric amount of the cam ring, and thereby to introduce the discharge pressure within the control hydraulic chamber to the one of the hydraulic chambers.

Vane pump apparatus and method

The invention relates to a vane pump, comprising an electric drive unit having an electric motor and a motor shaft, a pump chamber, attached on the electric drive unit, a rotor having a plurality of blades, said rotor being arranged concentrically to the motor shaft within the pump chamber, wherein the motor shaft is engaged with the rotor by way of a tappet which is connected torsionally rigid with the motor shaft and the tappet comprises at least one tappet peg, which is engaged in a rotor recess that corresponds to the tappet peg, wherein the at least one rotor recess has an oval shape and the tappet peg is contoured in such a way that two first slightly curved contoured sections each form one contact area with one oblong planar section each of the rotor recess.

Vane pump

A back pressure groove which is formed in a plate coming into contact with a side surface of a rotor and is communicated with a high pressure chamber is formed in such a manner as to copy an annular locus drawn by a base end of a vane which slides within a vane groove while coming into slidable contact with a cam surface of a cam ring, at a time when the rotor rotates one time.

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.

VANE CELL MACHINE

The invention concerns a vane cell machine having a stator and a rotor that is made of a first material, the rotor having guides comprising radially displaceable vanes that rest on an inside of the stator and border work chambers at each axial end of the rotor together with the rotor, the stator and individual stationary side walls, the vanes having, at least at some contact faces with the rotor and the stator, a second material that interacts unfrictionally with the first material. It is endeavoured to keep the wear small. For this purpose, in a radially inner area, the side wall comprises a surface of a third material interacting unfrictionally with the first material and, in a radially outer area a surface made of the first material. 1. A vane cell machine having a stator and a rotor that is made of a first material , the rotor having guides comprising radially displaceable vanes that rest on an inside of the stator and border work chambers at each axial end of the rotor together with the rotor , the stator and individual side walls , the vanes having , at least at some contact faces with the rotor and the stator , a second material that interacts unfrictionally with the first material , wherein in a radially inner area , the side wall comprises a surface of a third material interacting unfrictionally with the first material and , in a radially outer area a surface made of the first material.2. The vane cell machine according to claim 1 , wherein the side wall is made as a plate.3. The vane cell machine according to claim 1 , wherein the side wall is formed in a housing of the vane cell machine.4. The vane cell machine according to claim 2 , wherein a radially inner area claim 2 , the side wall comprises an insert made of the third material.5. The vane cell machine according to claim 4 , wherein the insert is arranged in a central recess in the side wall and comprises an eccentric bore through which the rotor is led.6. The vane cell machine according to claim 4 , ...

Oval Chamber Vane Pump

A rotary device includes a housing having a tubular surface. The surface has an throughpassing axis and first and second ports. A rotor body rotates about the axis and has a plurality of slots extending generally radially from the axis. A vane is mounted in each slot for reciprocation such that the surface can be swept by the vanes as the body rotates. A seal permits fluid to flow into and out of the device substantially only via the first and second ports such that the vanes create chambers which decrease in volume when in communication with the first port and increase in volume when in communication with the second port. The tubular surface is oval in cross-section. 1. A rotary device for use with a fluid , the device comprising:a housing having a tubular surface, the tubular surface having a rotation axis passing therethrough in spaced relation and having first and second ports defined therein;a rotor mounted for rotation about the axis, the rotor including a body mounted interiorly of the tubular surface and having a plurality of slots, each slot extending at least generally radially from the axis;for each slot, a vane, the vane being mounted in the slot for reciprocation such that the tubular surface can be swept by the vanes as the rotor body rotates;an arrangement for causing the vanes to retract and extend as the rotor body rotates, to sweep the tubular surface; anda sealing structure providing a seal to permit said fluid to flow into and out of the rotary device substantially only via the first and second ports and adapted such that the vanes create chambers which decrease in volume when in communication with the first port and increase in volume when in communication with the second port,characterized in that the arrangement is such that, in use, each vane extends and retracts only when the fluid pressure on the leading and trailing surface of the vane is substantially equal.2. A device according to claim 1 , wherein the tubular surface is oval in cross- ...

Sliding vane positive displacement pump

A sliding vane, positive displacement pump is provided which uses a fixed disc configuration wherein a rotor includes a pair of discs affixed to opposite faces of the rotor so as to rotate with the rotor/shaft. Preferably, the discs each have an outer diameter proximate the outer diameter of the rotor and define an outer disc surface which faces radially outwardly towards an opposing, inside surface of the pump head or other casing structure. A dynamic seal is provided along the outside disc diameter which eliminates the formation of slip between end surfaces. The path of fluid traveling from the high pressure pump side near the outlet to the low pressure side of pump near the inlet is controlled with a radial clearance that is defined between the OD of each disc and the ID of the stationary head. This effectively eliminates direct slip paths extending radially across axially-directed end faces

VARIABLE DISPLACEMENT LUBRICANT PUMP

A variable displacement lubricant pump for providing a pressurized lubricant for an internal combustion engine includes a shiftable control ring, a hydraulic control chamber which directly actuates the control ring, a pump rotor comprising a plurality of slidable vanes which rotate in the control ring, a control chamber wall, a temperature control opening arranged in the control chamber wall, and a temperature control valve which connects or disconnects the temperature control opening to an atmospheric pressure. The temperature control valve comprises a valve plunger which is axially shiftable so as to block or leave open a lubricant passage, and a first bimetal actuator sheet which directly actuates the valve plunger. The first bimetal actuator sheet comprises a first switching temperature. The valve plunger is in an open position if a lubricant temperature exceeds the first switching temperature. 19-. (canceled)10. A variable displacement lubricant pump for providing a pressurized lubricant for an internal combustion engine , the variable displacement lubricant pump comprising:a control ring configured to be shiftable;a hydraulic control chamber configured to directly actuate the control ring;a pump rotor comprising a plurality of slidable vanes which are configured to rotate in the control ring;a control chamber wall;a temperature control opening arranged in the control chamber wall; and a valve plunger configured to be axially shiftable so as to block or leave open a lubricant passage, and', 'a first bimetal actuator sheet configured to directly actuate the valve plunger, the first bimetal actuator sheet comprising a first switching temperature,', 'wherein, the valve plunger is in an open position if a lubricant temperature exceeds the first switching temperature., 'a temperature control valve configured to connect or disconnect the temperature control opening to an atmospheric pressure, the temperature control valve comprising,'}11. The variable displacement ...

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 ...

Sealing Element for Rotary Compressor

A sealing assembly for use in a rotary compressor having a housing and a rotor. The sealing assembly includes a sealing element and a spring positioned circumferentially around the sealing element. The sealing assembly is positioned in a slot formed in the housing, with at least one surface of the sealing element being beveled, and a cooperating mating surface of the slot being beveled. The force of the spring against the sealing element causes the sealing element to be forced into contact with at least one surface of the rotor (such as an inner surface of a rotor end plate). Alternatively, a sealing element can be provided that has elastic properties, the forces of which cause the sealing element to be forced into contact with the rotor. 1. A rotary compressor , comprising:a housing defining an internal cavity having an inner wall surface, wherein the housing has a housing longitudinal axis extending transverse to a housing plane that bisects the inner wall surface and wherein the housing further comprises a first sealing assembly;a rotor having a peripheral surface and being positioned within the internal cavity of the housing, the rotor configured to rotate about a rotor axis of rotation eccentric to the housing longitudinal axis, wherein the rotor has a first side surface and an opposed second side surface, and wherein the rotor further comprises a pair of end plates that are mounted to and rotate therewith the respective first and second side surfaces of the rotor; anda gate having a distal end, the gate being slidably mounted therewith the rotor and movable axially about and between a first position, in which the distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor, wherein the distal end of the gate is constrained to be spaced proximate from the inner wall surface of the housing as ...

Rotary vane pump for generating a vacuum

A rotary vane pump for generating a vacuum, having an electric drive with a motor stator and a motor rotor, wherein the motor stator and the motor rotor radially encompass the pump housing. The motor stator is non-rotatably disposed around or on the pump housing. The motor rotor is disposed on the side of the motor stator facing away from the pump housing, such that an overall housing is provided that accommodates the electric drive and the pump housing, and the overall housing has a housing floor and a housing shell, wherein the housing floor, together with the pump housing delimits the pump chamber.

VANE FOR A VANE CELL PUMP AND VANE CELL PUMP

A vane for a vane cell vacuum pump. The vane can be rotated about an axis of rotation by a rotor in a pump chamber and guided in the longitudinal direction in the rotor, with an upper side and a lower side to abut against the bottom and the ceiling of the pump chamber, with a rear side opposite a front side to limit the pressure chambers, with at least one face to slidably abut against an inside wall of the pump chamber on the casing side. The vane comprises a base body of a first plastic material and a vane end molded of a second plastic material to the base body forming the face. The base body comprises a mounting section around which the vane end is formed. The mounting section comprises at least one recess transverse to the front side and/or the rear side. 1106010666466. A vane () for a vane cell pump ()—in particular , for a vacuum pump—wherein the vane () can be rotated about an axis of rotation by a rotor () in a pump chamber () and guided in the longitudinal direction in the rotor () ,{'b': 12', '14', '64, 'with an upper side () and a lower side to abut against the bottom and the ceiling of the pump chamber (),'}{'b': 16', '18', '16, 'with a front side () and a rear side () opposite the front side () to limit the pressure chambers,'}{'b': 20', '68', '64, 'with at least one face () to slidably abut against an inside wall () of the pump chamber () on the casing side,'}{'b': 10', '22', '24', '22', '20, 'wherein the vane () comprises a base body () made of a first plastic material and a vane end () that is molded to the base body (), forms the face (), and consists of a second plastic material, and'}{'b': 22', '26', '24, 'wherein the base body () comprises a mounting section () around which the vane end () is formed,'}{'b': 26', '36', '38', '40', '42', '16', '18, 'wherein the mounting section () comprises at least one recess (, , , ) that runs in a direction transverse to the front side and/or the rear side (, ).'}210363826. The vane () according to claim 1 , ...

VARIABLE DISPLACEMENT VANE PUMP

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

VANE PUMP

A vane pump is disclosed that includes a plurality of vanes and radial slots configured to provide a gap between the vane and the radial slot such that the vane has a different angular position relative to the direction of rotation in a radially extended position compared to an angular position in a radially-retracted position. The different angular positions provide different orientation of the arcuate surface of the vane tip portion with respect to the cam body inner surface, thus providing different fluid stop points on the vane tip portion arcuate surface. 1. A vane pump , comprisinga housing including an inlet port and an outlet port;a cam block having a continuous inner surface including a pump arc and a seal arc;a rotor configured to rotate within the cam block, said rotor including a plurality of radial slots;a plurality of radially-extendable vanes that radially extend from the slots as they rotate past the cam block pump arc and retract as they rotate past the cam block seal arc, each of the vanes comprising a radial portion in one of the radial slots and a tip portion extending transverse to the radial portion in a direction of rotation of the rotor, said tip portion including an arcuate surface that engages with the cam block inner surface to provide a fluid seal point along the arcuate surface;wherein each of the plurality of vanes and radial slots are configured to provide a gap between the vane and the radial slot such that the vane has a different angular position relative to the direction of rotation in a radially extended position compared to a radially-retracted position, thereby providing different fluid stop points on the vane tip portion arcuate surface.2. The vane pump of claim 1 , wherein the fluid seal point of the vane in the radially extended position is offset in the direction of rotation relative to a leading surface of the vane radial portion.3. The vane pump of claim 1 , wherein the fluid seal point of the vane in the radially ...

External Rotor Pump

An external rotor pump, in particular a hydraulic external rotor pump, has a first component which is configured as an outer rotor with a sliding surface which is arranged on the outer side thereof, and a second component which is configured as an opposing body and in which the outer rotor is mounted rotatably by way of the sliding surface thereof on an inner guide surface of the opposing body and is in mechanical contact with the inner guide surface. An inner rotor which is mounted such that it can be rotated eccentrically with respect to the outer rotor is provided. One of the rotors can be driven, in order to be set into a rotational movement, and the rotors are coupled to one another such that, when the drivable rotor is driven, the other rotor is likewise set into a rotational movement as a result, in order to convey fluid from a suction region to a pressure region of the external rotor pump. The sliding surface or the guide surface has a surface structure which has a load-bearing region and a non-load-bearing region which is depressed in contrast with the former. The result is that the non-load-bearing region is saved from contact between the guide surface and the sliding surface which is mounted thereon. 1. An external rotor pump , comprising:a first component which is constructed as an external rotor and which has a sliding face which is arranged on an outer side thereof;a second component which is constructed as a counter-rotation member and in which the external rotor is rotatably supported by way of the sliding face thereof on an inner guiding face of the counter-rotation member and is in mechanical contact therewith; andan internal rotor which is rotatably supported eccentrically relative to the external rotor;whereinone of the rotors is drivable in order to be caused to carry out a rotational movement and the rotors are coupled to each other such that, when the drivable rotor is driven, the other rotor is thereby also caused to carry out a rotational ...

AUTOMATIC TRANSMISSION PUMP APPARATUS OR PUMP APPARATUS

The present invention provides a pump apparatus capable of preventing or reducing deterioration of efficiency of a pump. The pump apparatus includes a venturi portion provided on the way along a discharge passage. The venturi portion includes a small diameter portion having a smaller inner diameter than an inner diameter of the discharge passage from a discharge port to the venturi portion and an inner diameter gradually-increasing portion formed in such a manner that an inner diameter thereof gradually increases from the small diameter portion toward a downstream side of the discharge passage. The pump apparatus further includes a control valve configured to receive introduction of hydraulic fluid on an upstream side of the venturi portion and hydraulic fluid in the venturi portion. The control valve is configured to control a flow amount of hydraulic fluid to be supplied into an automatic transmission by switching a flow passage of the hydraulic fluid based on a differential pressure between a pressure on the upstream side of the venturi portion and a pressure in the venturi portion (). 1. An automatic transmission pump apparatus for supplying hydraulic fluid to an automatic transmission of a vehicle , the automatic transmission pump apparatus comprising:a pump housing including a pump element containing portion;a driving shaft pivotally supported on the pump housing;a pump element provided in the pump element containing portion and configured to be rotationally driven by the driving shaft, the pump element forming a plurality of pump chambers around the driving shaft;an intake port formed at the pump housing and opened to an intake region where a volume of a pump chamber increases according to a rotation of the driving shaft among the plurality of pump chambers;a discharge port formed at the pump housing and opened to a discharge region where the volume of the pump chamber reduces according to the rotation of the driving shaft among the plurality of pump chambers ...

Crude Oil Lifting System and Method Utilizing Vane Pump for Conveying Fluid

A crude oil lifting system and a method utilizing a vane pump for conveying a fluid. The crude oil lifting system comprises: an oil pipe and an oil pump connected to the oil pipe. The oil pump is the vane pump. The vane pump is provided with a cylindrical stator. The stator has arranged therein a drive shaft and a rator sleeved onto the drive shaft. The drive shaft is arranged within the stator along the direction parallel to the length of the stator. An intake plate is arranged at the lower end of the stator. A discharge plate is arranged at the upper end of the stator. The intake plate, the discharge plate, and the stator form a cylindrical cavity. The rotor is arranged between the intake plate and the discharge plate. An intake opening for taking in the crude oil is arranged on the intake plate. A discharge opening for discharging the crude oil is arranged on the discharge plate. The method utilizing the vane pump for conveying the fluid performs lifting by taking in and discharging the fluid in the directions of the ends of the stator. 1. A crude oil lifting system , characterized in that it comprises a oil pipe and a oil well pump connected to the oil pipe , said oil well pump is a vane pump , said vane pump comprises a plurality of tube shaped stators successively engaged with one another from bottom to top according to a direction from head to tail , a driving shaft provided through the plurality of stators parallel to the length direction of the plurality of stators , at the lower end of each said stator is provided with a suction disc , and at the upper end of each stator is provided with a discharging disc , each said stator forms a tube shaped inner chamber with adjacent suction disc and discharging disc , in each inner chamber is provided with a rotor encasing said driving shaft , said rotor is located between said suction disc and said discharging disc , on said suction disc is arranged a suction inlet for sucking crude oil , and on said discharging ...

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 ...

VARIABLE DISPLACEMENT ROTARY PUMP AND DISPLACEMENT REGULATION METHOD

A rotary positive displacement pump for fluids, in particular for the lubrication oil of a motor vehicle engine (), has a displacement that can be regulated by means of the rotation of a stator ring () having an eccentric cavity () in which the rotor () of the pump () rotates. The stator ring () is configured as a multistage rotary piston for displacement regulation and is arranged to be directly driven by a fluid under pressure, in particular oil taken from a delivery side () of the pump or from a point of the lubrication circuit located downstream the oil filter (). The invention also concerns a method of regulating the displacement of the pump () and a lubrication system for a motor vehicle engine in which the pump () is used. 114-. (canceled)15. A variable displacement rotary positive displacement pump for fluids , comprising a rotor arranged to rotate within an eccentric cavity of a stator ring in turn arranged to be rotated within a predetermined angular interval , as operating conditions of the pump vary , in order to vary a relative eccentricity between the cavity and the rotor and hence the displacement of the pump , characterised in that the stator ring is configured as a multistage rotary piston for displacement regulation , arranged to be directly driven by a fluid under pressure.16. The pump as claimed in claim 15 , wherein a pair of stages of the rotary piston are defined by external radial appendages of the ring claim 15 , which are slidable in fluid-tight manner against bases of respective chambers defined between the ring and a pump body claim 15 , the first appendage being permanently exposed to the action of the fluid under pressure claim 15 , and the second appendage being arranged to be exposed to the action of the fluid under pressure upon an external command claim 15 , jointly with the first appendage.17. The pump as claimed in claim 16 , wherein the ring has at least one annular cavity claim 16 , which houses a partition member rigidly ...

VARIABLE CAPACITY VANE PUMP

In a variable capacity vane pump in which a discharge capacity of a pump chamber is varied by varying an amount of eccentricity of a cam ring relative to a rotor, a port inner wall surface that extends around an inner peripheral cam surface of the cam ring when the cam ring moves in a direction for increasing the amount of eccentricity of the cam ring relative to the rotor is formed on an intake port. 1. A variable capacity vane pump used as a fluid pressure supply source , comprising:a rotor that is driven to rotate;a plurality of vanes housed in the rotor to be free to slide;a cam ring that includes an inner peripheral cam surface against which respective tip end portions of the vanes slide, and is capable of rotating eccentrically relative to a center of the rotor;a pump chamber defined by the rotor and the cam ring in between adjacent vanes;an intake port through which working fluid suctioned into the pump chamber is led; anda discharge port through which working fluid discharged from the pump chamber is led,wherein a port inner wall surface that extends around the inner peripheral cam surface of the cam ring when the cam ring moves in a direction for increasing an amount of eccentricity of the cam ring relative to the rotor is formed on the intake port.2. The variable capacity vane pump as defined in claim 1 , wherein the intake port is formed such that when the cam ring moves to a maximum eccentricity position claim 1 , the port inner wall surface extends without a step relative to the inner peripheral cam surface of the cam ring.3. The variable capacity vane pump as defined in claim 1 , wherein the intake port comprises:a communication start side intake port end portion at which communication with the pump chamber starts as the rotor rotates; anda communication end side intake port end portion at which communication with the pump chamber ends as the rotor rotates,the port inner wall surface is formed in the communication start side intake port end portion, ...

VANE PUMP DEVICE

A vane pump includes: a rotor configured to rotate under rotational force from a rotary shaft while supporting multiple vanes and including a curved surface portion with an arc shape centered on the rotary shaft and a rotor recess depressed from the curved surface portion toward a rotation center; a cam ring disposed so as to surround the rotor and including an inner peripheral surface facing the curved surface portion of the rotor; and an inner plate disposed on one end of the cam ring in an axial direction of the rotary shaft so as to cover an opening of the cam ring and including a suction inner recess depressed toward the rotation center relative to the curved surface portion of the rotor. 1. A vane pump device comprising:a rotor configured to rotate under rotational force from a rotary shaft while supporting a plurality of vanes, the rotor including a curved surface portion with an arc shape centered on the rotary shaft, the rotor including a first recess depressed from the curved surface portion toward a rotation center;a cam ring disposed so as to surround the rotor, the cam ring including an inner peripheral surface facing the curved surface portion of the rotor; anda one side member disposed on one end of the cam ring in an axial direction of the rotary shaft so as to cover an opening of the cam ring, the one side member including a second recess depressed toward the rotation center relative to the curved surface portion of the rotor.2. The vane pump device according to claim 1 , whereinthe one side member includes an inner portion that constitutes a portion of a suction port on a side thereof closer to the rotation center, the suction port being configured to suction a working fluid into a pump chamber defined by an outer peripheral surface of the rotor, the inner peripheral surface of the cam ring, and two adjacent vanes of the plurality of vanes, andthe second recess is a portion that is a part of the inner portion and depressed toward the rotation ...

VARIABLE DISPLACEMENT PUMP

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

Vane pump assembly

An improved vane pump assembly is provided. The vane pump assembly includes a housing with an open chamber that is circular in shape when viewed in cross-section and has an inner wall that surrounds the open chamber. A rotor is rotatably disposed in the open chamber of the housing. As with the open chamber, the rotor is circular in shape when viewed in cross-section and has a diameter. The rotor further has at least one through-passage which extends diametrically across the rotor. The rotor is positioned such that it has a center that is offset from a center of the circular open chamber of the housing.

Quick Disconnect Pump

A quick disconnect pump assembly is disclosed. The pump assembly includes a housing with inlet and outlet ports, an elongate slot, and a retainer channel. A sliding lock moves within the slot between a locked position and an unlocked position. The sliding lock includes inlet and outlet port openings and a sliding lock retainer opening. The inlet and outlet port openings each engage and retain a removable fitting when the sliding lock is in the locked position, but do not engage or retain the removable fitting when the sliding lock is in the unlocked position. The pump assembly also includes a sliding lock retainer which passes through the sliding lock retainer opening to prevent removal of the sliding lock from the elongate slot. A fluid pump and a beverage dispenser utilizing the pump assembly are also disclosed. 1. A quick disconnect pump assembly comprising:a pump housing having an inlet port passage and an outlet port passage, an elongate slot for receiving a sliding lock member, and a retainer channel disposed between the inlet port passage and an outlet port passage;a sliding lock member received within the elongate slot and movable within the slot between a locked position and an unlocked position, the sliding lock member having an inlet port opening, an outlet port opening, and a sliding lock retainer opening,wherein the inlet port opening and the outlet port opening each have a first, narrower opening portion which engages and retains a removable fitting when the sliding lock member is in the locked position and a second, wider opening portion which does not engage or retain the removable fitting when the sliding lock member is in the unlocked position; anda sliding lock retainer disposed within the retainer channel and passing through the sliding lock retainer opening to prevent removal of the sliding lock member from the elongate slot.2. The quick disconnect pump assembly of claim 1 , wherein the sliding lock retainer comprises a spring disposed within ...

PUMP DEVICE

A cam ring is capable of moving while rolling on a cam support surface. The cam ring is provided such that within a range in which the cam ring can move on the cam support surface, an eccentricity amount increasing-side angle is always greater than an eccentricity amount decreasing-side angle. On a plane perpendicular to the rotation axis of a driving shaft, the eccentricity amount increasing-side angle is an angle, in a direction opposite to a rotation direction of the driving shaft, from a first reference line, which connects a tangent point between the cam ring and the cam support surface to a rolling center of the cam ring, to a starting end of a first discharge port. The eccentricity amount decreasing-side angle is an angle, in the rotation direction of the drive shaft, from the first reference line to a terminal end of the first discharge port. 1. A pump device comprising:a pump housing including a pump element container space, a suction passage, a discharge passage, a suction port, a discharge port, and a cam supporter surface, wherein the suction passage is connected to the suction port, and wherein the discharge passage is connected to the discharge port;a drive shaft rotatably formed in the pump housing;a rotor that is formed with the drive shaft and includes slits;vanes each of which is disposed movably in a corresponding one of the slits; anda cam ring shaped to be annular and disposed in the pump element container space,wherein:the cam ring and the rotor and the vanes form pump chambers;the cam ring forms a first fluid pressure chamber and a second fluid pressure chamber in the pump element container space;the suction port is open to a suction region in which each of the pump chambers increases in volume with rotation of the rotor;the discharge port is open to a discharge region in which each of the pump chambers decreases in volume with rotation of the rotor;the first fluid pressure chamber is a space formed outside the cam ring in a radial direction ...

VARIABLE DISPLACEMENT PUMP WITH DOUBLE ECCENTRIC RING AND DISPLACEMENT REGULATION METHOD

A rotary positive displacement pump for fluids, in particular for the lubrication oil of a motor vehicle engine (), has a displacement that can be regulated by means of the rotation of a stator ring () having an eccentric cavity () in which the rotor () of the pump () rotates. The stator ring () is located in an eccentric cavity () of an external ring (), which is configured as a multistage rotary piston for displacement regulation and is arranged to be directly driven by a fluid under pressure, in particular oil taken from a delivery side () of the pump or from a point of the lubrication circuit located downstream the oil filter (). The invention also concerns a method of regulating the displacement of the pump () and a lubrication system for the engine of a motor vehicle in which the pump () is used. 115-. (canceled)16. A variable displacement rotary positive displacement pump for fluids , comprising a rotor arranged to rotate within an eccentric cavity of a stator ring in turn arranged to be rotated within a first predetermined angular interval , as operating conditions of the pump vary , in order to vary a relative eccentricity between the cavity and the rotor and hence the displacement of the pump , characterised in that the stator ring is housed within an eccentric cavity of an external ring , which is configured as a multistage rotary piston arranged to be directly driven by a fluid under pressure in order to be rotated within a second predetermined angular interval , and arranged to transmit the rotary motion to the stator ring in order to make it rotate in opposite direction to the external ring.17. The pump as claimed in claim 16 , wherein the eccentric cavities have the same eccentricity and claim 16 , in a minimum displacement condition claim 16 , are arranged so that their eccentricities are offset by 180°.1810. The pump as claimed in claim 16 , wherein a pair of stages of the rotary piston are defined by external radial appendages of the external ring ...

VARIABLE CAPACITY TYPE VANE PUMP

In a variable capacity type vane pump in which a cam ring pivots, a discharge port is so formed that an absolute value of a difference between a discharge port start edge line inclination angle and a discharge port end edge line inclination angle is larger than a vane angle. 1. A variable capacity type vane pump used as a fluid pressure supply source , comprising:a rotor to be driven and rotated;a plurality of vanes reciprocally provided on the rotor;a cam ring having an inner peripheral cam surface, on which tip parts of the vanes slide with the rotation of the rotor;a pump chamber defined between adjacent vanes;a suction port configured to introduce working fluid sucked into the pump chamber;a discharge port configured to introduce the working fluid discharged from the pump chamber; anda first fluid pressure chamber and a second fluid pressure chamber provided at opposite sides of a pivot point of the cam ring;wherein if a virtual line connecting the pivot point of the cam ring and a rotation center of the rotor is a pivot center line, a virtual line connecting the rotation center of the rotor and a start edge of the discharge port is a discharge port start edge line, an angle of inclination of the discharge port start edge line with respect to the pivot center line of the cam ring is a discharge port start edge line inclination angle, a virtual line connecting the rotation center of the rotor and an end edge of the discharge port is a discharge port end edge line, an angle of inclination of the discharge port end edge line with respect to the pivot center line of the cam ring is a discharge port end edge line inclination angle and an angle of intersection between center lines of the adjacent vanes is a vane angle, the discharge port is so formed that an absolute value of a difference between the discharge port start edge line inclination angle and the discharge port end edge line inclination angle is larger than the vane angle.2. The variable capacity type vane ...

GAS COMPRESSOR

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

HYDRAULIC PRESSURE SUPPLY SYSTEM OF AUTOMATIC TRANSMISSION

A hydraulic pressure supply system of an automatic transmission for a vehicle is provided. The system divides a hydraulic pressure generated from first and second pump chambers of a hydraulic pump into a high-pressure and low-pressure part. The system includes first and second input lines that guide oil of an oil pan to the first and second pump chambers. First and second discharge lines discharge the hydraulic pressure generated from the first and second pump chambers. A high-pressure switch valve selectively supplies or recycles the hydraulic pressure supplied from the first discharge line to the high-pressure hydraulic path into the high-pressure part. A pressure accumulator is disposed on a high-pressure hydraulic path between the high-pressure switch valve and the high-pressure part and a low-pressure switch valve selectively supplies or recycles the hydraulic pressure supplied from the second discharge line to the low pressure hydraulic path into the low-pressure part. 1. A hydraulic pressure supply system of an automatic transmission for a vehicle dividing a hydraulic pressure generated from first and second pump chambers of a hydraulic pump formed as a vane pump into a high-pressure part and a low-pressure part to be supplied , comprising:first and second input lines respectively configured to guide oil of an oil pan to the first and second pump chambers;first and second discharge lines respectively configured to discharge the hydraulic pressure generated from the first and second pump chambers;a high-pressure switch valve configured to selectively supply or recycle the hydraulic pressure supplied from the first discharge line to the high-pressure hydraulic path into the high-pressure part;a pressure accumulator disposed on a high-pressure hydraulic path between the high-pressure switch valve and the high-pressure part; anda low-pressure switch valve configured to selectively supply or recycle the hydraulic pressure supplied from the second discharge line to ...

PUMP COVER

A cover with a center axis for a pump assembly includes a plate. A center hole is formed in the plate and positioned on the center axis of the cover. A first edge of the plate extends between a first lobe and a second lobe, a second edge of the plate extends between the first lobe and a third lobe, and a third edge of the plate extends between the second lobe and the third lobe. The first, second, and third lobes each comprise a mounting boss with a thru-hole. 1. A cover with a center axis for a pump assembly comprising:a plate;a center hole formed in the plate and positioned on the center axis of the cover;a first edge of the plate extending between a first lobe and a second lobe;a second edge of the plate extending between the first lobe and a third lobe; anda third edge of the plate extending between the second lobe and the third lobe,wherein the first, second, and third lobes each comprise a mounting boss with a thru-hole.2. The cover of claim 1 , wherein the first edge and the second edge are straight.3. The cover of claim 2 , wherein the third edge is bent away from the center hole on a plane of the plate.4. The cover of claim 3 , wherein the third edge is longer in length than the first edge.5. The cover of claim 4 , wherein the second edge is longer in length than the first edge.6. The pump assembly of claim 5 , wherein the first edge and the second edge of the plate are positioned equidistant from the center axis.7. The cover of claim 1 , wherein the plate of the cover is generally triangular in shape.8. A pump assembly comprising:a tubular body extending from a first end to a second end along a center axis, wherein the first end is open;a plurality of pumps disposed within the tubular body; and a plate;', 'a center hole formed in the plate and positioned on the center axis of the tubular body;', 'a first edge of the plate extending between a first lobe and a second lobe;', 'a second edge of the plate extending between the first lobe and a third lobe; and', ...

VARIABLE DISPLACEMENT PUMP

A variable displacement pump includes: a control mechanism arranged to be actuated based on a hydraulic pressure introduced into the introduction passage before the eccentric amount is minimized, and arranged to introduce the hydraulic pressure through a throttling to the second control hydraulic chamber when the hydraulic pressure introduced from the introduction passage is equal to or smaller than a predetermined pressure, and to discharge the hydraulic fluid within the second control hydraulic chamber in accordance with the hydraulic pressure when the hydraulic pressure introduced from the introduction passage becomes greater than the predetermined pressure; and a switching mechanism arranged to switch between a state in which the hydraulic fluid introduced into the introduction passage is introduced to the control mechanism, and a state in which the hydraulic fluid introduced into the introduction passage is discharged from the control mechanism. 1. A variable displacement pump comprising:a rotor rotationally driven;a plurality of vanes which are provided on an outer circumference side of the rotor to be projectable from and retractable into the rotor;a cam ring which receives the rotor and the plurality of vanes therein to separate a plurality of hydraulic fluid chambers, and which is arranged to be moved so as to vary an eccentric amount of a center of an inner circumference of the cam ring with respect to a center of the rotation of the rotor, and thereby to vary increase amounts or decrease amounts of volumes of the hydraulic fluid chambers at the rotation of the rotor;side walls disposed on both sides of the cam ring in the axial direction, at least one of the side walls including a suction portion opened in the hydraulic fluid chambers whose volumes are increased in the eccentric state of the cam ring, and a discharge portion opened in the hydraulic fluid chambers whose volumes are decreased in the eccentric state of the cam ring;an urging member which is ...

Vane Pump

A vane pump with a pump housing in which a cam ring is constructed or arranged, and wherein a rotor is provided that is mounted in the cam ring so that it can rotate about a rotational axis , wherein the cam ring has an inner contour with a variable radius that varies between a maximum radius and a minimum radius in the circumferential direction about the rotational axis , wherein, in the radial gap between the inner contour and the rotor , a number of lift sections is constructed with pump chambers constructed in these sections, and wherein vane elements are mounted on the rotor , wherein these elements slide against the inner contour of the cam ring and limit the pump chambers in the circumferential direction. According to the invention, the radius of the inner contour varies about the rotational axis according to the function: r=r+a·sin(n·φ), where r=(r+r)/2, a =(r−r)/2, and φ=phase angle of the radius (r) between (r) and (r) in the direction of rotation of the rotor . 1. A vane pump comprising:a pump housing including a cam ring, and wherein a rotor is provided that is mounted in the cam ring so that it can rotate about a rotational axis,wherein the cam ring has an inner contour with a variable radius that varies between a maximum radius (rmax) and a minimum radius (rmin) in a circumferential direction about the rotational axis, wherein, in a radial gap between the inner contour and the rotor, a number (n) of lift sections are constructed with pump chambers in these sections, andwherein, on the rotor, vane elements are mounted that slide against the inner contour of the cam ring and limit the pump chambers in the peripheral direction, {'br': None, 'i': r=r', '+a', 'n, '0+sin(·φ),'}, 'wherein the radius (r) of the inner contour varies about the rotational axis according to the function [{'b': '0', 'r=(rmax+rmin)/2,'}, 'a=(rmax−rmin)/2 and', 'φ=phase angle of the radius between (rmin) and (rmax) in the direction of rotation of the rotor., 'where'}2. The vane pump ...

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 ...

Adaptive pivot for variable displacement vane pump

Variable displacement pumps and methods of pumping a fluid are provided. An example pump may include a housing having an inlet and an outlet, a rotor fixed for rotation with a shaft, the shaft rotatably mounted within the housing, and a plurality of radially extending vanes slidably disposed in the rotor. The pump may further include a pivotable ring member defining at least in part a control chamber about the rotor, wherein the ring member is pivotable within the housing to vary an eccentricity of the ring member with respect to the rotor. The ring member is configured to shift a pivot position of the ring member from a first pivot position to a second pivot position displaced from the first pivot position.

POSITIVE DISPLACEMENT HYDRAULIC PUMPS

This invention presents several configuration of a new positive displacement pump with variable geometric volume for hydraulic drive and control system or else, this pump consists of one more pumping groups. When one pumping group is used an external energy storage system is to be utilized. This is not necessary in the case when the pump has two or more pumping groups. 1. A hydraulic positive displacement pump with a pumping group comprising of a cam completely encircled by followers to form an enclosed chamber23. A pumping group according to in which the followers rise and fall during cam rotation. (currently amended) A pumping group according to in which the volume of the enclosed chamber increases and such liquid during the followers rise.4. A pumping group according to in which the volume of the enclosed chamber decreases and discharges the liquid to the pump delivery line during the followers fall.5. A pumping group according to as on item 1 and with the followers rise by means of the action of the cam.6. A pumping group according to with the followers fall by the action of pressurized control fluid claim 1 , springs claim 1 , mechanisms claim 1 , or any combination of these means.7. A pump according to further including a plurality of pumping groups.8. A pump according to where the pressurized control fluid is provided internally or from out sources.9. A pump according to with rigid or flexible followers.10. A pump according to with rigid followers distributed around the cam claim 1 , and each follower slides with respect to the adjacent components.11. A pump according to in which buckets could be formed between the adjacent followers and components.12. A pump according to in which the buckets may be governed by guides.13. A pump according to with the follower sliding motion can be governed by guides.14. A pump according to with the guide having cylindrical shape or else.15. A pump according to with the guides having lips or else for sealing purposes.16. A ...

VARIABLE DISPLACEMENT VANE PUMP

A variable displacement vane pump includes a notch portion which is a flow path provided to extend from an initiating end of a discharge port towards a terminating end side of a suction port. The notch portion is formed so that a sectional area of the flow path is smaller than a sectional area of the discharge port at the initiating end thereof and that a length of the flow path in a circumferential direction is 1.5 pitches or larger. The terminating end of the suction port is a point where the vane in the suction area last overlaps the suction port. The initiating end of the discharge port is a point where the vane departed from the suction area first overlaps the discharge port. One pitch is a distance defied in the circumferential direction between adjacent vanes of the plurality of vanes. 1. A variable displacement vane pump comprising:a pump housing including a pump element accommodating portion;a drive shaft supported rotatably on the pump housing;a rotor provided in the pump housing, the rotor being configured to be driven to rotate by the drive shaft and including a plurality of slots in a circumferential direction;a plurality of vanes provided so as to appear from and disappear into the slots;a cam ring provided movably within the pump element accommodating portion, the cam ring being formed into an annular shape and defining a plurality of pump chambers on an inner circumferential side together with the rotor and the vanes;a suction port formed in the pump housing, the suction port opening to a suction area of the plurality of pump chambers, in which area a displacement is increased as the rotor rotates;a discharge port formed in the pump housing, the discharge port opening to a discharge area of the plurality of pump chambers, in which area a displacement is reduced as the rotor rotates;a cam ring control mechanism (a control valve, first and second fluid chambers and the like) provided in the pump housing and configured to control an eccentricity of the ...

Variable Displacement Pump

A variable displacement pump is provided which better distributes stress across the rotor structure thereby reducing the risk of the rotor cracking and/or failing. The variable displacement pump includes a housing, a vane control ring, a rotor, a plurality of vanes, a slider ring, a biasing means, and a regulator valve. The housing defines an inlet port and a discharge port. The rotor may be rotationally driven by a drive shaft and coaxially aligned with the drive shaft. The rotor may define a plurality of primary ribs and a plurality of corresponding secondary ribs with an aperture defined between each primary rib and secondary rib. Each primary rib defines a primary rib thickness and each secondary rib defines a secondary rib thickness which is less than the primary rib thickness. 1. A variable displacement pump comprising:a housing defining an inlet port and a discharge port;a vane control ring;a rotor driven by a drive shaft and coaxially aligned with the drive shaft, the rotor defining a plurality of primary ribs and a plurality of secondary ribs which correspond with the plurality of primary ribs, the rotor further defining an aperture between each primary rib and each corresponding secondary rib, each primary rib having a primary rib thickness and each secondary rib having a secondary rib thickness which is less than the primary rib thickness;a plurality of vanes slidably disposed in the rotor, each vane in the plurality of vanes abutting the vane control ring at a proximate end of each vane;a slider ring pivotally affixed to the housing via a pivot, the slider ring defining a displacement control region with a first portion of the housing, the slider ring cooperating with the vane control ring, the rotor and the plurality of vanes form a plurality of pumping chambers that are successively connected to the inlet and discharge ports;a biasing means acting on the slider ring and urging the slider ring in a first direction via a first force; anda regulator valve ...

Variable displacement pump

Variable displacement oil pump for supplying oil to an internal combustion engine. Included is a cam ring having an inner peripheral section for accommodating the pump element thereinside, and an outer peripheral section having a swinging movement fulcrum. A control device for changeover controlling supply of a discharge pressure to first and second pressure chambers so the cam ring is swingingly movable to change an eccentricity amount of the cam ring relative to an axis of the rotor, wherein the first pressure receiving surface is set larger in pressure receiving area than the second pressure receiving surface, wherein a part of each of the first and second pressure chambers is disposed overlapping with the discharge region in a radial direction of the rotor, and wherein the first and second pressure chambers are disposed nearer to the swinging movement fulcrum than to the axis of the cam ring.

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 ...

VANE PUMP

A vane pump includes a housing, a cam ring, a rotor, a plurality of vanes that forms a plurality of pump chambers, a side plate constituting a portion of an intake port, an intermediate plate axially adjacent to the housing and the side plate, and a cover member. A portion of a flow passage, through which a fluid flows, is constituted by a surface of the intermediate plate and at least one of the housing, the side plate, and the cover member, the surface of the intermediate plate being adjacent to the at least one of the housing, the side plate, and the cover member. A through-hole or a recessed portion is formed in the intermediate plate, and the through-hole or the recessed portion of the intermediate plate and the side plate constitute a portion of the intake port. 1. A vane pump comprising:a housing;a cam ring that is provided inside the housing and has a cam face in an inner peripheral surface of the cam ring;a rotor that is rotatably provided on an inner periphery side of the cam ring and has a plurality of accommodation grooves extending radially inward from an outer peripheral surface of the rotor;a plurality of vanes that is slidably accommodated in the respective accommodation grooves and circumferentially divides a space between the cam face and the outer peripheral surface of the rotor to form a plurality of pump chambers;a side plate that is axially adjacent to the cam ring and the rotor and constitutes a portion of an intake port that is opened so as to allow a fluid to be sucked into the pump chambers;an intermediate plate axially adjacent to the housing and the side plate; anda cover member that is fixed to an axial end portion of the housing in a manner such that the intermediate plate is interposed between the cover member and the housing,wherein a portion of a flow passage, through which the fluid flows, is constituted by a surface of the intermediate plate and at least one of the housing, the side plate, and the cover member, the surface of the ...

INTEGRATED PRESSURE PLATE AND PORT PLATE FOR PUMP

An integrated pressure plate and port plate, and method of forming same, for a pump includes a housing having a pumping chamber formed therein. The housing includes first and second metal pressure plate portions that form at least a portion of the pumping chamber wherein at least one of the first and second pressure plate portions has a hard coating formed of a different material than a remainder of the housing metal on a surface thereof where integrated ports are formed on surface(s) of the pressure plate portion(s). Surface irregularities relieve stresses and promote adhesion of the coating (e.g., tungsten carbide) to the underlying metal (aluminum alloy). 1. A pump assembly comprising:a housing having a pumping chamber formed therein, the housing including first and second metal pressure plate portions that form at least a portion of the pumping chamber wherein at least one of the first and second pressure plate portions has a hard coating formed of a different material than a remainder of the housing metal on a surface thereof where integrated ports are formed in surfaces of the pressure plate portions; anda rotor received in the pumping chamber for rotation relative to the housing.2. The pump assembly of wherein the each of the first and second pressure plate portions includes the hard coating that forms at least a portion of the pumping chamber.3. The pump assembly of wherein the coating is tungsten carbide.4. The pump assembly of wherein the first and second pressure plate portions include preselected surface irregularities to relieve stresses and promote adhesion of the tungsten carbide coating to the underlying metal.5. The pump assembly of wherein the housing is an aluminum or aluminum alloy.6. The pump assembly of wherein the coating is tungsten carbide and in which integrated port plate features are formed.7. The pump assembly of wherein the metal of the first and second pressure plate portions includes preselected surface irregularities to relieve ...

COMPRESSOR

A compressor is provided that may include a cylinder including an outer cylinder portion and an inner cylinder portion, and a vane portion connected between the outer cylinder portion and inner cylinder portion, which is fixed to a casing. A rolling piston may be slidably coupled to the vane portion to form an outer compression space and an inner compression space while making a turning movement between the outer cylinder portion and the inner cylinder portion. Through this, a weight of a rotating body may be reduced to obtain low power loss with respect to a same cooling power and a small bearing area, thereby reducing refrigerant leakage as well as easily changing a capacity of a cylinder in an expanded manner. Moreover, refrigerant may be discharged in opposite directions in each compression space, thereby reducing vibration noise of the compressor. In addition, a back pressure groove may be formed on an upper surface of a drive transmission portion of the rolling piston, thereby reducing a friction area between the rolling piston and the upper bearing, as well as reducing a friction loss between the rolling piston and the upper bearing due to oil filled into the back pressure groove. 1. A compressor , comprising:a casing;a crank shaft configured to transmit a rotational force of a motor drive provided within the casing to a rolling piston;a plurality of bearing plates configured to support the crank shaft;a cylinder fixed and coupled between the plurality of bearing plates, an outer cylinder portion and an inner cylinder portion of which are connected to a vane portion to form a compression space; andthe rolling piston, which is slidably coupled to the vane portion between the outer cylinder portion and the inner cylinder portion to divide the compression space into an outer compression space and an inner compression space while making a turning movement by the crank shaft, wherein a back pressure groove having a predetermined area and depth is formed on at ...

COMPRESSOR

A compressor is provided that may include a cylinder including an outer cylinder portion, an inner cylinder portion, and a vane portion connected between the outer cylinder portion and the inner cylinder portion, which is fixed to a casing. A rolling piston may be slidably coupled to the vane portion to form an outer compression space and an inner compression space while making a turning movement between the outer cylinder portion and the inner cylinder portion. Through this, a weight of a rotating body may be reduced to obtain a low power loss with respect to the same cooling power and a small bearing area, thereby reducing refrigerant leakage as well as easily changing a capacity of a cylinder in an expanded manner. In addition, refrigerant may be discharged in opposite directions to each other in each compression space, thereby reducing vibration noise of the compressor. 1. A compressor , comprising:a casing;a crank shaft configured to transmit a rotational force of a motor drive provided within the casing to a rolling piston;a plurality of bearing plates configured to support the crank shaft;a cylinder fixed and coupled between the plurality of bearing plates to form a compression space; and an outer cylinder portion;', 'an inner cylinder portion separated from an inner side of the outer cylinder portion by a predetermined distance to form the compression space; and', 'a vane portion that connects an inner circumferential surface of the outer cylinder portion and an outer circumferential surface of the inner cylinder portion, to which the rolling piston is slidably inserted and coupled., 'the rolling piston, which is eccentrically coupled to the crank shaft to divide the compression space into an outer compression space and an inner compression space while making a turning movement with respect to the cylinder, wherein the cylinder comprises2. The compressor of claim 1 , wherein the vane portion is formed with an outer connecting end connected to an inner ...

CARTRIDGE VANE PUMP AND PUMP DEVICE

A cartridge vane pump includes: a linkage member being configured to link the side member and the cover member, the linkage member has: a first support portion configured to support the side member; a second support portion configured to support the cover member; and an extended portion formed so as to extend between the first support portion and the second support portion, the extended portion extending in an axial direction of the rotor, grooves are respectively formed in outer circumferential surfaces of the side member and the cover member so as to extend in a circumferential direction, and the first support portion and the second support portion are respectively received in the grooves formed in the side member and the cover member. 1. A cartridge vane pump attached to a body of a fluid pressure device , the cartridge vane pump comprising:a rotor configured to be driven rotationally;a plurality of vanes provided in the rotor so as to be able to freely 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 a first end surface of the rotor and a first end surface of the cam ring;a cover member brought into contact with a second end surface of the rotor and a second end surface of the cam ring, the cover member being attached to the body; anda linkage member provided so as to extend between the side member and the cover member, the linkage member being configured to link the side member and the cover member, wherein a first support portion configured to support the side member;', 'a second support portion configured to support the cover member; and', 'an extended portion formed so as to extend between the first support portion and the second support portion, the extended portion extending in an axial direction of the rotor,, 'the linkage member hasgrooves are respectively formed in outer circumferential surfaces of ...

VANE SPACING FOR A VARIABLE DISPLACEMENT OIL PUMP

A vane fluid pump for a vehicle component has an inner rotor supported within a cam ring. A series of vanes is positioned within a series of slots in an inner rotor to define and separate a series of non-uniformly sized segmented pumping chambers to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise. One chamber has a first sector angle being within a first predetermined range of a nominal value. A portion of the chambers each has a sector angle greater than the first sector angle, with an average sector angle greater than the nominal value by a second predetermined range. A remaining portion of the chambers each has a sector angle less than the first sector angle, with an average sector angle less than the nominal value by the second predetermined range. 1. A vane fluid pump for a vehicle component comprising:a cam ring defining a continuous inner wall surrounding a cavity;an inner rotor supported within the cam ring, the inner rotor having an outer wall defining a series of slots spaced about the outer wall; anda series of vanes, each vane positioned within a respective slot of the inner rotor and extending radially outwardly to contact the continuous inner wall of the cam ring, the series of vanes defining and separating a series of non-uniformly sized segmented pumping chambers configured to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise, one chamber of the series of chambers having a first sector angle being within a first predetermined range of a nominal value, each chamber in a first group of chambers of the series of chambers having a sector angle greater than the nominal value by a second predetermined range, and each chamber in a second remaining group of chambers of the series of chambers having a sector angle less than the nominal value by the second predetermined range.2. The pump of wherein the nominal value is 360 degrees divided by a number of vanes in the series of vanes ...

VANE PUMP

A vane pump is provided with: a pump housing having an accommodating concave portion; and a pump cartridge accommodated in the accommodating concave portion, wherein the pump cartridge has: a rotor; a plurality of vanes received in a plurality of slits formed in the rotor; a cam ring formed with a cam face on an inner circumference of the cam ring; and a first side plate provided at the opposite side from a bottom surface of the accommodating concave portion such that the cam ring is located therebetween, the first side plate has a first projected portion projected radially outward, and the pump cartridge is anchored to the pump housing via the first projected portion. 1. A vane pump configured to discharge working fluid by being rotationally driven by a driving source , comprising:a pump housing having an accommodating concave portion; anda pump cartridge accommodated in the accommodating concave portion, wherein a rotor to which a rotational driving force from the driving source is transmitted;', 'a plurality of vanes freely slidably received in a plurality of slits, the slits being formed in the rotor in a radiating pattern;', 'a cam ring formed with a cam face on an inner circumference of the cam ring, the cam face being configured such that tip ends of the plurality of vanes slide on the cam face as the rotor is rotated; and', 'a first side plate provided on an opposite side from a bottom surface of the accommodating concave portion such that the cam ring is located therebetween,, 'the pump cartridge hasthe first side plate has a first projected portion projected radially outward, andthe pump cartridge is anchored to the pump housing via the first projected portion.2. The vane pump according to claim 1 , further comprisingan annular member fitted into an annular groove, the annular groove being formed in an inner circumferential surface of the accommodating concave portion, whereinthe annular member comes into contact with the first projected portion at an ...

DISPLACEMENT PUMP

A displacement pump with a pot-shaped housing, a rotor which is swivel-mounted about a rotation axis inside the housing, and two blades which are guided in a movable manner insider the rotor, wherein the pot-shaped housing includes an inner peripheral wall which has a sealing portion for tightly adjoining the rotor and a chamber portion for tightly adjoining the blade tips, as well as for dividing the internal space of the housing into chambers. The rotor has two blade receptacles for receiving and guiding the blades, wherein each internal radially extending blade tip restricts a pressure chamber in the respective blade receptacle. Both pressure chambers are fluid-connected to one another via a connection element, wherein the total volume of both pressure chambers and the connection element remains at the same level during a rotation of the rotor, at least while the blade tips are attached to the chamber portion. 1. A displacement pump comprising: a pot-shaped housing , a rotor swivel-mounted about a rotation axis inside the housing , and two blades guided in a movable manner insider the rotor , wherein the pot-shaped housing includes an inner peripheral wall having a sealing portion for tightly adjoining the rotor , and a chamber portion for tightly adjoining the blade tips and dividing the internal space of the housing into chambers , wherein the rotor has tow blade receptacles for receiving and guiding the blades , wherein each internal radially extending blade tip restricts a pressure chamber in the respective blade receptacle , and both pressure chambers are fluid-connected to one another via a connection element , wherein the total volume of both pressure chambers and the connection element remains substantially at the same level during a rotation of the rotor , at least while the blade tips are attached to the chamber portion.2. The pump as set forth in claim 1 , wherein during one rotation of the rotor the total volume remains within a tolerance range of +/− ...

VANE PUMP DEVICE

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

VANE PUMP DEVICE

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

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 ...

Vane oil pump

A vane fluid pump for a vehicle component has a cam defining a continuous inner wall surrounding a cavity, and an inner rotor supported within the cam. The inner rotor has a cylindrical outer wall defining a series of slots equally spaced about the outer wall. A series of vanes is provided with each vane positioned within a respective slot of the inner rotor and extending outwardly to contact the continuous inner wall of the cam. Each vane provides a fluid barrier between adjacent pumping chambers formed between the cam and the inner rotor. A first vane of the series of vanes defines a passageway thereacross to fluidly connect adjacent pumping chambers. The passageway is configured to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise. At least another vane is configured without any fluid passageways.

POSTIVE DISPLACEMENT PUMP

The invention relates to a positive displacement pump, including a pot-shaped housing, a rotor rotatably supported in the housing, and at least one blade movably guided in the rotor, the blade tip of which contacts the inner circumferential wall of the housing and divides the interior into chambers, wherein a locking mechanism that inhibits or brakes the movement of the blade in the rotor is provided. 1. A displacement pump comprising a pot-shaped housing , a rotor swivel-mounted in the housing and at least one blade guided movably in a movable inside the rotor , wherein the blade tip contacts the inner peripheral wall of the housing and divides the internal space into chambers when the displacement pump is operating , and wherein a locking mechanism inhibits the displacement of the blade inside the rotor , wherein the locking mechanism engages the blade tractionally or frictionally.2. The displacement pump as set forth in claim 1 , wherein in the rotor at least two blades arranged in parallel to one another are provided claim 1 , wherein the blades claim 1 , respectively claim 1 , comprise a first section remaining in the rotor in such a way that the respective first sections overlap at least sectionwise perpendicularly to the displacement plane of the blades claim 1 , and wherein the locking mechanism engages the first sections of the blades.3. The displacement pump as set forth in claim 2 , wherein the locking mechanism engages in a radial direction claim 2 , at the respective first section of the blade.4. The displacement pump as set forth in claim 2 , wherein the locking mechanism is arranged in an intermediate space provided between the first sections of the blades and acts in radial direction on the broadsides of the first sections of the blades.5. The displacement pump as set forth in claim 4 , wherein the locking mechanism comprises a flexible blocking element claim 4 , which is arranged in the intermediate space and which has a recess and an expansion ...

VANE OIL PUMP

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

Housing for a rotary vane pump

A housing for a rotary vane pump includes a suction flange and a discharge flange having a multi-angular cross-section with at least two sides extending parallel to each other, cooling ribs provided on an outer surface of the housing, with the number of cooling ribs in the region with a high internal pressure being greater than a number of cooling ribs in the region with a low internal pressure, inlet and outlet, with the inlet cross-section being greater than the outlet cross-section, and connection elements provided on the housing and each having two installation surfaces connected by a connection surface.

BLADE-TYPE FLUID TRANSMISSION DEVICE

A blade-type fluid transmission device includes a rotor eccentrically located in the room of a stator and the outer periphery of the rotor is tangent to the inner periphery of the room. At least one blade is pivotably connected to stator and movably inserted in at least one slot of the rotor. The distal end of the at least one blade is in contact with the inner periphery of the room so as to form a space for receiving fluid between the outer periphery of the rotor and the inner periphery of the room. The contact between the at least one blade and the inner periphery of the room increases the efficiency for transmitting fluid which enters into the stator from an inlet and leaves from the stator from an outlet. 114-. (canceled)15. A fluid transmission device comprising:{'b': 10', '13', '13', '132', '10', '14', '15', '14', '15', '13, 'a stator having a room defined therein and the room having a circular inner periphery , the stator having an inlet and an outlet , the inlet and the outlet communicating with the room ;'}{'b': 20', '21', '22', '21', '21', '13', '21', '132', '13', '14', '15', '21', '132', '13', '23', '21', '13', '22', '10, 'a rotor having a cylindrical body and a shaft which extends through the cylindrical body , the cylindrical body eccentrically located in the room , an outer periphery of the cylindrical body being tangent to the inner periphery of the room , the inlet and the outlet respectively located adjacent to a position where the outer periphery of the cylindrical body is tangent to the inner periphery of the room , two slots defined diametrically in the outer periphery of the cylindrical body and respectively communicating with the room , the shaft extending through the stator and adapted to be connected with a power source;'}{'b': 36', '38', '23', '36', '38', '21', '36', '38', '132', '13', '21', '132', '13, 'a first blade and a second blade located within the slots respectively, a first end of each of the first and second blades , pointing an ...

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 ...

VARIABLE DISPLACEMENT OIL PUMP

A variable displacement oil pump includes: a switching mechanism arranged to switch a state in which the hydraulic fluid is introduced to the second control hydraulic chamber through a connection passage, and a state in which the hydraulic fluid is discharged from the second control hydraulic chamber through the connection passage; and a control mechanism arranged to be actuated before the eccentric amount of the cam ring becomes minimum, and arranged to vary an opening area of the connection passage as the discharge pressure is increased, and to vary an opening area of a discharge passage arranged to discharge the hydraulic fluid within the second control hydraulic chamber, in a direction opposite to a direction of a variation of the opening area of the introduction passage. 1. A variable displacement oil pump comprising:a rotor rotationally driven;a plurality of vanes provided in an outer circumference portion of the rotor to be projectable from and retractable into the rotor;a cam ring which receives the rotor and the vanes therein to form a plurality of pump chambers, and which is moved so as to vary an eccentric amount of a center of an inner circumference surface of the cam ring with respect to a center of a rotation of the rotor;a suction portion opened in the pump chambers whose volumes are increased when the cam ring is eccentrically moved in a first direction with respect to the center of the rotation of the rotor;a discharge portion opened in the pump chambers whose volumes are decreased when the cam ring is eccentrically moved in a second direction with respect to the center of the rotation of the rotor;an urging member arranged to urge the cam ring in the first direction in which the eccentric amount of the cam ring is increased with respect to the center of the rotation of the rotor;a first control hydraulic chamber which is arranged to receive a discharge pressure from the discharge portion through an introduction passage, and thereby to apply, to the ...

Positive-Displacement Pump, Method for Operating a Positive-Displacement Pump, and Steering System

A positive-displacement pump, in particular a vane-type pump for the delivery of a fluid for a consumer of a steering system includes a rotor, a cam ring, a housing-side control plate, and a cover-side control plate that form, in an assembled state, a rotor assembly. The housing-side control plate is arranged adjacent to a housing face surface in an axial direction and the cover-side control plate is arranged adjacent to a cover face surface in the axial direction. The rotor assembly is movable in the axial direction between the housing face surface and the cover face surface. 1. A positive displacement pump for delivering a fluid for a consumer of a steering system , comprising:a pump housing;a cam ring arranged in the pump housing;a rotor mounted rotatably in the cam ring, the rotor having slots in which vanes are guided in a radially displaceable manner, the vanes configured to be acted upon with a fluid pressure by way of a channel located behind the vanes, wherein the channel is formed in the rotor and is configured to connect the slots to a pressure side of the positive displacement pump, and wherein outer vane ends are configured to be positioned against an inner wall of the cam ring; anda working chamber formed by the cam ring and the rotor, the working chamber is bounded in an axial direction by an end side of a housing side control plate and by an end side of a cover side control plate,wherein the rotor, the cam ring the housing side control plate, and the cover side control plate in the assembled state form a rotor assembly,wherein the housing side control plate is arranged in the axial direction adjacent to a housing end surface and the cover side control plate is arranged in the axial direction adjacent to a cover end surface, andwherein the rotor assembly is movable in the axial direction between the housing end surface and the cover end surface.2. The positive displacement pump as claimed in claim 1 , wherein:a direction of rotation of the rotor is ...

VEHICULAR HYDRAULICS SUPPLY DEVICE

A variable capacity type oil pump, which is driven by an engine, supplies hydraulic pressure to a hydraulic control circuit of an automatic transmission. A range switch mechanism, which includes a motor as a motive power source, switches a shift range of the automatic transmission. Further, a switch operation mechanism, which switches a discharge amount of the oil pump, is driven by the motor of the range switch mechanism. In this case, an operative position of the switch operation mechanism is switched by the motor according to an input rotation speed of the oil pump, thereby switching the discharge amount of the oil pump. Accordingly, the motor of the range switch mechanism is used to drive the switch operation mechanism to switch the discharge amount of the oil pump, and thus a motive power source dedicated to changing the discharge amount of the oil pump is not needed. 1. A vehicular hydraulics supply device for a vehicle including a variable-capacity oil pump , the oil pump having a variable discharge amount and being rotatably driven by a motive power source of the vehicle , the vehicular hydraulics supply device comprising:an electric actuator that acts as a motive power source of a range switch mechanism, the range switch mechanism switching a range of a transmission; anda switch operation mechanism driven by the electric actuator to perform a switch operation for adjusting the discharge amount of the oil pump.2. The vehicular hydraulics supply device of claim 1 , whereinthe oil pump supplies hydraulic pressure to a hydraulic control circuit of the transmission.3. The vehicular hydraulics supply device of claim 1 , further comprising:a controller that switches the discharge amount of the oil pump by using the electric actuator to switch an operative position of the switch operation mechanism according to an input rotation speed of the oil pump.4. The vehicular hydraulics supply device of claim 1 , whereinthe switch operation mechanism includes a switch valve ...

VANE PUMP

A vane pump includes a rotor, slits which are radially formed in the rotor, vanes which slidably project from the slits, vane back pressure chambers which are defined between the base end parts of the vanes and the slits, a cam ring with which the tip parts of the vanes slide in contact, a pump chamber which is defined among the cam ring, the rotor and adjacent vanes, a vane ring which faces the base end parts of the vanes, a vane ring housing chamber on which one end of each slit is open and in which the vane ring is housed, and vane ring opposite pressure chambers on which the other ends of the slits are open and which cause a fluid pressure to act in a direction to push the rotor toward the vane ring. 1. A vane pump used as a fluid pressure supply source , comprising:a rotor which is driven and rotated;a plurality of slits which are radially formed in the rotor;a plurality of vanes which slidably project from the slits;vane back pressure chambers which are defined between the base end parts of the vanes and the slits;a cam ring with which the tip parts of the vanes slide in contact as the rotor rotates;a pump chamber which is defined among the cam ring, the rotor and adjacent vanes;a vane ring which faces the base end parts of the vanes;a vane ring housing chamber on which one end of each slit is open and in which the vane ring is housed; andvane ring opposite pressure chambers on which the other ends of the slits are open and which cause a fluid pressure to act in a direction to push the rotor toward the vane ring.2. The vane pump according to claim 1 , wherein:slit opening recesses recessed at every opening position of the slit are formed in an end surface of the rotor; andthe vane ring opposite pressure chambers are defined between the slit opening recesses and a side plate with which the rotor slides in contact.3. The vane pump according to claim 2 , wherein:the vane ring opposite pressure chamber includes a throttle passage allowing communication between ...

VANE PUMP AND METHOD FOR THE OPERATION THEREOF

There are described a vane cell pump and a method for operating a vane cell pump. The vane cell pump comprises a hollow-cylindrical contour ring which is arranged between two side plates and which has an inner peripheral face and a rotor which is rotatably supported about a rotation axis which extends parallel with the cylinder axis of the contour ring and which has a plurality of conveying elements which can be displaced radially relative to the rotation axis and which are urged against the inner peripheral face during a rotation of the rotor. The inner peripheral face is formed in such a manner that a number corresponding to the number of flows of the vane cell pump in respect of pump portions are each constructed with an intake region and a pressure region which are passed through by the conveying elements during a rotation of the rotor. Within a pump portion, the radial spacing between the rotation axis and the inner peripheral face increases when viewed in the working rotation direction of the rotor over the intake region in order subsequently to decrease toward the end of the pressure region again. A narrow location, during the passage through which the conveying elements (are displaced radially inward toward the rotation axis to the greatest extent, is located between a pressure region) and a subsequent intake region when viewed in the working rotation direction. The rotor has, radially inside the conveying elements, expulsion regions which are at least partially connected to at least one pressure region via a fluid path in order to expel the conveying elements against the inner peripheral face. By applying only a part-stroke, an auxiliary start contour which is arranged between the rotation axis and the inner peripheral face radially inside the conveying elements in the region of at least one pump portion displaces conveying elements which are previously displaced at a narrow location to the greatest extent radially inwardly toward the rotation axis as a ...

Filling machine and method for filling up liquid or pasty masses with external collecting vessel

The present disclosure relates to a filling machine and a method for filling up pasty or liquid masses, for example for sausage production, with a feed pump, in particular a vane pump, for conveying the pasty or liquid masses, a vacuum pump for generating a vacuum in the feed pump, in particular the vane cells of the vane pump, wherein the feed pump may be connected with the vacuum pump via a first channel and via an integrated collecting vessel for entrained ingredients. According to the present disclosure, a supply means is provided via which the feed pump may be optionally additionally connected with an external collecting vessel via the first channel. The operator may thus choose between two different operating modes with and without an external collecting vessel.

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 ...

Variable Displacement Vane Pump

A sliding vane pump includes a passageway that fluidly connects one or more pumping chambers to a side chamber. The passageway pressurizes the side chamber. This fluid pressure exerts a force that counteracts the force caused by pressure differences between the outlet pumping chambers and the inlet pumping chambers. At high speed, part of the side chamber is pressurized by the smallest volume outlet pumping chamber while another portion of the side chamber is pressurized by the largest volume outlet chamber. This results in a force counteracting an uncommanded displacement decrease of the pump. 1. A sliding vane pump comprising:a fixed housing defining inlet and outlet ports;a sliding housing defining a cylindrical chamber and configured to slide within the fixed housing, the fixed housing and sliding housing defining a side chamber; anda rotor configured to rotate within the cylindrical chamber and having a plurality of vanes configured to seal against a wall of the circular chamber to define a plurality of pumping chambers;wherein the side chamber is fluidly connected to a first pumping chamber of the plurality of pumping chambers such that fluid pressure in the side chamber exerts a first force on the sliding housing opposing a second force on the sliding housing due to differential fluid pressures among the pumping chambers.2. The sliding vane pump of wherein the first pumping chamber is fluidly connected to the side chamber by a first passageway and fluidly connected to the outlet port by a second passageway separate from the first passageway.3. The sliding vane pump of wherein the first pumping chamber has a first volume less than a volume of any other of the plurality of pumping chambers.4. The sliding vane pump of wherein a second pumping chamber of the plurality of pumping chambers is fluidly connected to the side chamber by a third passageway and fluidly connected to the outlet port.5. The sliding vane pump of wherein the second pumping chamber has a ...

Vane pump

A vane pump includes: a rotor that is coupled with a rotation shaft to rotate; a plurality of vanes that are slidably held by a plurality of vane grooves which are disposed in a radiation direction in an outer circumferential portion of the rotor; a cam ring that is arranged to surround the rotor and the plurality of vanes; and a side plate that covers the cam ring and includes a supply unit which supplies a working fluid into the cam ring between the cam ring, an outer circumference of the side plate being recessed to a radially inner side of the rotation shaft to form the supply unit, in which an outer circumference of the supply unit and an inner circumference of the cam ring are shaped along each other.

VARIABLE DISPLACEMENT PUMP HAVING ROTATING CAM RING

Vane pump mechanical losses are reduced by removing vane friction losses and replacing them with lower magnitude journal bearing fluid film viscous drag losses. A freely rotating cam ring is supported by a journal bearing. A relatively low sliding velocity is imposed between the cam ring and the vanes). This permits the use of less expensive and less brittle materials in the pump by allowing the pump to operate at much higher speeds without concern for exceeding vane tip velocity limits. 1. A pump comprising:a housing having a cavity, at least a portion of the cavity forming a pump chamber;a shaft;a rotor received in the pump chamber and operatively driven by the shaft for rotation relative to the housing;at least one vane extending radially outward from the rotor;an annular cam ring received around the rotor and mounted for rotation relative to the housing, and relative to the rotor;a cam sleeve received around the cam ring; andan actuator assembly including first and second piston actuators operatively engaging the cam sleeve and selectively moving a centerpoint of the cam sleeve relative to the housing to alter the displacement of the pump.2. The pump of wherein the first and second piston actuators are disposed in opposing relation.3. The pump of wherein the first and second piston actuators engage first and second lobes claim 2 , respectively claim 2 , extending from the cam sleeve.4. The pump of wherein the first and second lobes extend from a peripheral region of the cam sleeve and the piston actuators move along a tangential region relative to the cam sleeve.5. The pump of wherein the cam sleeve is secured against rotation relative to the housing by a pin located at region diametrically opposite the tangential region.6. The pump of further comprising a spacer sleeve interposed between the cam sleeve and the housing claim 5 , the cam sleeve secured to the spacer ring with the pin for selective pivoting movement relative thereto.7. The pump of wherein the at ...

VANE PUMP WITH ONE OR MORE LESS RESTRICTED VANES

A vane pump that employs one or more less restricted vanes (or looser vanes) within its rotor is described herein. The less restricted vane(s) are configured to radially move outwardly before the remaining vanes during startup. In one case, for example, at least one vane has a different thickness (e.g., thinner) as compared to the thickness of the remaining vanes. In another case, at least one slot has a different width (e.g., wider) as compared to the width of the other slots. The less restricted vane facilitates a cold start in highly viscous oil by allowing easier radial displacement and thus earlier initial build-up of pressure in the pump. The pump may be used with an engine or transmission. 1. A vane pump comprising:an inlet for receiving fluid from a source;an outlet for delivering pressurized fluid to a system therefrom;a pressure chamber cam having an internal space defined by an inside surface and communicated to the inlet and outlet;a rotor rotatably received within the internal space of the pressure chamber cam, the rotor having a plurality of radial slots and a plurality of vanes received and movable within respective radial slots radially towards the inside surface of the pressure chamber cam; anda drive shaft connected to the rotor for rotating the rotor to cause the vanes to draw lubricant in from the inlet and pressurize the lubricant for expelling out through the outlet;the rotor having the radial slots thereof communicated to the pressurized fluid to bias the vanes radially outward therefrom using the fluid pressure;wherein, for at least one of the plurality of vanes, a distance between an outer face of the at least one vane and an inner face of its respective slot is greater than distances between outer faces of the remaining vanes and inner faces of their respective slots to facilitate radially outward movement thereof towards the inside surface of the pressure chamber cam by centrifugal force during initial start-up of the pump.2. The vane pump ...

PUMP

An inner rotor (a drive side) includes a plurality of slots. An outer rotor (a driven side) includes a plurality of pendulum retaining grooves. Each of pendulums includes a head section swingably fitted into a corresponding one of the pendulum retaining grooves and a body section slidably fitted into the corresponding one of the slots. A torque transmission surface of the body section includes a straight line section and a curved section. At a reference angle position at which a perpendicular line orthogonal to an eccentric direction becomes parallel to the corresponding one of the slots, the straight line section makes a surface contact on a torque-transmission-side side surface to start a torque transmission. Until a torque transmission end point, the curved section contacts on opening edge of the corresponding one of the slots. A curved section profile is set to make mutually equal angular velocities between the two rotors. 1. A pump comprising:a cylindrical outer rotor having an inner peripheral surface on which a plurality of pendulum retaining grooves are formed, each pendulum retaining groove being of a letter C shape in cross section and being extended in an axial direction of the pump;an inner rotor disposed at an inner peripheral side of the outer rotor eccentrically to the outer rotor and having a plurality of slots formed on an outer peripheral surface of the inner rotor in a radial direction of the pump; anda plurality of pendulums, each pendulum having: a head section of a substantially circular shape in cross section slidably fitted into a corresponding one of the pendulum retaining grooves; and a body section of a substantially triangular shape in cross section connected to the head section via a neck section and slidably fitted into a corresponding one of the slots while contacting on side surfaces of both sides of the corresponding one of the slots and partitioning a space between the outer rotor and the inner rotor into a plurality of chambers, ...

Electric pump

An electric pump includes a housing 2 configured of a housing body 3 and a cover 4 , a stator 6 having a plurality of coils 15 , a rotor 7 configured of an inner side outer rotor 16 and an outer side rotor body 17 , a pump part 8 disposed on the inner circumferential side of the rotor 7 of an electric motor 5 , side plates 11 and 12 disposed on both side surfaces of the rotor 7 , an inner rotor 9 , and a plurality of connecting plates 10 interposed between the outer rotor 16 and the inner rotor 9 . The side plate 12 of the side plates 11 and 12 is pressed to the rotor 7 by a compression coil spring 28.

Pump exhibiting an adjustable delivery volume

A pump which exhibits an adjustable delivery volume, the pump including (a) a pump housing comprising a delivery chamber; (b) a delivery rotor which can be rotated about a rotary axis within the delivery chamber, for delivering the fluid; (c) an adjusting device, including: (c1) an adjusting member which can be adjusted in the pump housing in order to adjust the delivery volume of the pump; (c2) a first setting chamber for generating a first setting pressure for adjusting the adjusting member; (c3) and a second setting chamber for generating a second setting pressure for adjusting the adjusting member; (d) a fluidically operable valve for adjusting the setting pressure of the first setting chamber; (e) and an electromagnetic valve, comprising: a pressure port for a setting fluid which is diverted from the high-pressure side; and a relief port for the setting fluid.

VARIABLE DISPLACEMENT LUBRICANT PUMP

A variable displacement lubricant pump for providing a pressurized lubricant for a motor vehicle. The pump includes a pump rotor which rotates about a rotor axis and a control ring which is shiftable. The pump rotor includes a pump rotor shaft, a rotor body having vane slits, and pump vanes which are arranged in and which axially slide in the vane slits. The control ring can be actuated to set an eccentricity of the control ring to define a volumetric pump performance. The control ring defines a pump chamber which is separated by the pump vanes into pumping compartments. The control ring includes a control ring main body, bushing rings which are arranged separately at a radial inside of the control ring main body, and a radial inlet opening and/or a radial outlet opening. The radial inlet opening and/or the radial outlet opening is/are arranged axially between the bushing rings. 18-. (canceled)9. A variable displacement lubricant pump for providing a pressurized lubricant for a motor vehicle , the variable displacement lubricant pump comprising: a pump rotor shaft,', 'a rotor body which comprises vane slits, and', 'pump vanes which are arranged in and which are configured to be axially slidable in the vane slits; and, 'a pump rotor which is configured to rotate about a rotor axis, the pump rotor comprising,'} a control ring main body,', 'at least two bushing rings which are arranged separately at a radial inside of the control ring main body, and', 'at least one of a radial inlet opening and a radial outlet opening,', 'wherein,', 'the at least one of the radial inlet opening and the radial outlet opening is/are arranged axially between the at least two bushing rings., 'a shiftable control ring which is configured to be actuated so as to set an eccentricity of the shiftable control ring so as to define a volumetric pump performance, the shiftable control ring defining a pump chamber which is separated by the pump vanes into pumping compartments, the shiftable control ...

ROTOR OF VANE PUMP AND METHOD OF MANUFACTURING ROTOR

A rotor of a vane pump and a method of manufacturing a rotor are provided. The rotor may be formed to include a plurality of radially formed slots and having a disk shape, and may include approximately 20% to 70% of pig iron, approximately 0.2% to 0.5% of copper (Cu), and approximately 0.1% to 0.4% of iron (Fe) by weight ratio, and scraps and steel wastes for the remainder, and may be formed of a nodular graphite cast iron including precipitated spheroidal graphite and having an austenite structure.

Power steering apparatus

An apparatus for use in turning steerable vehicle wheels includes a power steering motor assembly connected with the steerable vehicle wheels. A first pump connected with the power steering motor assembly is continuously driven by an engine of the vehicle, during operation of the engine, to supply fluid under pressure to the power steering motor assembly. A second pump connected with the power steering motor assembly is continuously driven by an engine of the vehicle, during operation of the engine. A valve connected with the power steering motor assembly and the second pump directs fluid flow from the second pump to at least one of the power steering motor assembly and reservoir during operation of both the first pump and the second pump. A pumping mechanism includes a first pumping area defining the first pump and a second pumping area defining the second pump. The first pumping area is smaller than the second pumping area.

Vane pump device

An embodiment provides a vane pump device including a rotation shaft; and a pump unit that discharges oil at multiple discharge pressures, discharges oil to one side in an axial direction of the rotation shaft at a first discharge pressure of the multiple discharge pressures, and discharges oil to the other side in the axial direction at a second discharge pressure of the multiple discharge pressures.

Reducing flow communication between chambers of guided-vane rotary apparatus

A guided-vane rotary apparatus having working chambers and rotor hub sectors which are separated from one another by vane assemblies and which rotate within a housing opening embody features which reduce the likelihood of flow communication between the working chambers. To this end, the apparatus includes sealing arrangements which are disposed between the walls of the housing opening and the vane assemblies and between the vane assemblies and the hub sectors between which the vane assemblies are positioned. Furthermore, the housing is provided with seal-accepting recesses adjacent its opening, and a sealing ring is closely accepted by each recess. Wave springs are disposed between the bottom of the recesses and the sealing rings for biasing the sealing rings axially of the apparatus and into sealing engagement with adjacent surfaces of the apparatus. 1. A guided-vane rotary apparatus comprising:a housing including a body having two opposite, substantially planar side faces, an opening extending between the side faces and a seal-accepting recess encircling the opening on at least one of the side faces, the recess defining a bottom surface which is substantially parallel to the at least one side face and an outermost surface which extends between the bottom surface and the at least one side face;a rotor assembly including a body mounted within the opening of the housing body for rotation about an axis and defining a slot extending radially of the rotation axis, and the rotor assembly further includes a disk which is mounted adjacent the at least one side face of the housing body so as to cover the opening of the housing body and wherein the disk includes an inner side face which faces the at least one side face of the housing body, and the at least one side face of the housing body defines a cam groove which encircles the opening in the at least one side face and is disposed outboard of the recess defined therein;a vane assembly positioned within the slot of the ...

Rotary Fluid Machine and Associated Method of Operation

A fluid rotary machine includes first and second bodies and that are rotatable relative to each other. The secondbody is inside the first body to define a working fluid space there between. In addition, the machine includes a plurality of gates. Each gate is supported by the first body and is movable in a radial direction with respect to the first and second bodies to extend into and retract from the working fluid space. The machine also includes a magnetic gate control system configured to exert control of the motion and/or position of the gates in the radial direction. The magnetic gate control system is a dispersed system including magnets or magnets and components made of ferromagnetic materials. The magnetic gate control system may be dispersed between the gates, and one or both of the bodies. 1. A rotary fluid machine comprising:first and second bodies, the bodies being rotatable relative to each other and arranged one inside the other to define a working fluid space there between;a working fluid intake and a working fluid exhaust together forming an axial flow path enabling working fluid to flow into and out of the machine in an axial direction wherein the working fluid space is in fluid communication with the intake and the exhaust;at least one gate carried by or otherwise coupled with the first body and being movable with respect to the bodies; anda magnetic gate control system operable to exert control of motion of the at least one gate.2. The rotary fluid machine according to wherein the magnetic gate control system is operable to move the at least one gate in an extension direction to extend the at least one gate from the first body toward the second body.3. The rotary fluid machine according to wherein the magnetic gate control system is operable to displace the at least one gate in a retraction direction to retract the at least one gate toward the first body.4. The rotary fluid machine according to wherein the magnetic gate control system is operable ...

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 ...

Vane pump device

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

Valve arrangement, in particular a reflux valve with a pressed-in ball holder

A valve arrangement to allow a fluid flow in a first direction and block it in a second direction opposite the first direction. The valve arrangement includes: a fluid channel, a valve seat and a closing body arranged in the fluid channel. The closing body prevents fluid flow in the second direction when resting against the valve seat and allows fluid flow in the first direction when the closing body is lifted off the valve seat; a closing body holder in the fluid channel configured to restrict movement of the closing body in the first direction when the closing body is lifted off the valve seat. The closing body holder held on an inner circumferential wall of the fluid channel in a frictional fit and/or movable in the first direction in a position in which the closing body holder is held on an inner circumferential wall of the fluid channel.

VANE PUMP SEAL

A seal tube assembly of a pump system is provided. The seal tube assembly includes a single seal tube having a first axial end sealably coupled to a first vane pump and a second axial end sealably coupled to a second vane pump. The single seal tube includes transverse contact surfaces at the first axial end and transverse contact surfaces at the second axial end. The single seal tube is formed to define a first seal tube cavity at the first axial end and a second seal tube cavity at the second axial end. 1. A seal tube assembly of a pump system , the seal tube assembly comprising:a single seal tube having a first axial end sealably coupled to a first vane pump and a second axial end sealably coupled to a second vane pump,the single seal tube comprising transverse contact surfaces at the first axial end and transverse contact surfaces at the second axial end, andthe single seal tube being formed to define a first seal tube cavity at the first axial end and a second seal tube cavity at the second axial end.2. The seal tube assembly according to claim 1 , further comprising sets of o-rings and back-up rings receivable in the first and second seal tube cavities.3. The seal tube assembly according to claim 1 , wherein the single seal tube comprises leaded bronze.4. A pump system claim 1 , comprising:first and second vane pumps that are each rotatably disposed for respective operations about first and second axial lengths of a rotor,the first vane pump comprising a first body and a first flange extending from the first body,the second vane pump comprising a second body and a second flange extending from the second body, andthe first body, the first flange, the second body and the second flange cooperatively defining a first cavity and cooperatively defining a second cavity located between the first cavity and the rotor,the pump system further comprising a seal tube assembly which is sealably coupled to the first and second flanges to inhibit fluid flow between the first ...

Pumping device for pumping oil from a storage container to a transmission system of a motor vehicle

A pumping device for pumping oil in a transmission system of a hybrid drive for a motor vehicle has an oil pump and a direct drive for driving the rotor and an electric drive for driving a rotor part that surrounds the rotor. A stationary housing surrounds the rotor part and has an inlet connection and an outlet connection of the oil pump. The oil pump allows a selective drive via the direct drive or the electric drive in a simple manner. 113-. (canceled)14184121. A pumping device () for pumping oil from a storage container () to a transmission () of a motor vehicle () , the pumping device () comprising;{'b': 7', '7', '9', '10, 'an oil pump () configured to pump oil, the oil pump () being configured to be drivable by a mechanical direct drive () or by a switchable electric drive (),'}wherein;{'b': '7', 'the oil pump () has two components movable relative to one another to effect pumping of the oil, and'}{'b': 9', '10, 'the mechanical direct drive () is connected to one of the two components and the switchable electric drive () is connected to the other of the components.'}1571920192425575819. The pumping device as claimed in claim 14 , wherein the oil pump () has a rotatable rotor () and a rotor part () mounted rotatably with respect to the rotatable rotor () claim 14 , and oil feed elements ( claim 14 , claim 14 , claim 14 , ) for the rotor ().161352. The pumping device as claimed in claim 15 , further comprising a stationary housing ( claim 15 , ) claim 15 ,wherein:{'b': 20', '13', '52', '28, 'the rotor part () is mounted rotatably with respect to the stationary housing (, ) and is sealed by a radial seal (), and'}{'b': 17', '18', '60', '61', '7', '13', '52, 'inlet and outlet connectors (, , , ) configured to provide hydraulic connection of the oil pump () are arranged on the housing (, ).'}171314111020197. The pumping device as claimed in claim 16 , wherein the stationary housing () delimits a common recess () in which are arranged an electric motor () of the ...

LOW-PULSE VANE PUMPS

The vane pump includes a housing enclosing the rotor and vanes, the housing including an inner surface defined by a core profile to cause the vanes to extend and retract radially to provide a predetermined vane displacement with rotation of the vanes. The core profile includes an inlet profile portion and an outlet profile portion, wherein the core profile includes a vane radius modifying portion defined between the inlet profile portion and the outlet profile portion such that a radial extension of a vane that is guided along the inner surface will change when transiting the vane radius modifying portion. 1. A vane pump , comprising:a rotor;a plurality of vanes extending radially outward therefrom, the vanes being slidably movable relative to the rotor in a radial direction such that the vanes can extend from and retract into the rotor and define a plurality of circumferentially spaced vane cavities, wherein a respective vane cavity is defined between each adjacent pair of the vanes;an inlet in fluid communication with the vane cavities to accept a fluid into the vane cavities;an outlet in fluid communication with the vane cavities to allow the fluid to exit the vane cavities; anda housing enclosing the rotor and vanes, the housing including an inner surface defined by a core profile to cause the vanes to extend and retract radially to provide a predetermined pump displacement with rotation of the vanes, wherein the core profile includes an inlet profile portion and an outlet profile portion, wherein the core profile includes a vane radius modifying portion defined between the inlet profile portion and the outlet profile portion such that a radial extension of a vane that is guided along the inner surface will change when transiting the vane radius modifying portion.2. The vane pump of claim 1 , wherein the vane radius modifying portion includes a non-linear profile.3. The vane pump of claim 2 , wherein the non-linear profile is defined by a fourth order slope.4. ...

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 ...

VANE PUMP

A vane pump is used as a fluid pressure supply source and includes a rotor which is driven and rotated, a plurality of slits which are radially formed in the rotor, a plurality of vanes which slidably project from the slits, a cam ring with which tip parts of the vanes slide in contact as the rotor rotates, a pump chamber which is defined between the cam ring and adjacent ones of the vanes, a plurality of discharge ports which introduce working fluid discharged from the pump chamber contracting as the rotor rotates, a discharge passage which causes the working fluid introduced from the discharge ports to join, and a check valve which is opened for a flow of the working fluid discharged from one discharge port to the discharge passage. 1. A vane pump used as a fluid pressure supply source , comprising:a rotor which is driven and rotated;a plurality of slits which are radially formed in the rotor;a plurality of vanes which slidably project from the slits;a cam ring with which tip parts of the vanes slide in contact as the rotor rotates;a pump chamber which is defined between the cam ring and adjacent ones of the vanes;a plurality of discharge ports which introduce working fluid discharged from the pump chamber contracting as the rotor rotates;a discharge passage which causes the working fluid introduced from the discharge ports to join; anda check valve which is opened for a flow of the working fluid discharged from one discharge port to the discharge passage.2. The vane pump according to claim 1 , wherein:the check valve is provided in a region where the pump chamber is caused to communicate with a suction side by the vanes fallen into the slits.3. The vane pump according to claim 1 , further comprising:a first suction region and a first discharge region where the vanes make the first reciprocal movement and;a second suction region and a second discharge region where the vanes make the second reciprocal movement, wherein:the first suction region is arranged to be ...

GEAR PUMP WITH GEAR HAVING INTERSPERSED VANES

A pump fluid driving apparatus includes a housing having a chamber, with two gears mounted within the chamber. The housing includes a first rounded wall section and a second rounded wall section, the first and second rounded wall sections defining at least a portion of the chamber. The gears have teeth located about their respective peripheries and operatively positioned with the teeth of the first gear and the teeth of the second gear intermeshed. The teeth include slotted teeth and solid teeth arranged with uniform spacing in a repeating pattern about the periphery of each of the gears, with each of the slotted teeth having a vane slot and a radially extending vane extending from the vane slot, and each radially extending vane being movable within the respective vane slot and being configured to contact the respective first or second rounded wall sections. 1. A pump fluid driving apparatus , comprising:a housing having a chamber, the housing including a first rounded wall section and a second rounded wall section, the first and second rounded wall sections defining at least a portion of the chamber; anda first gear and a second gear, with the first and second gears mounted for rotation about their centers within the chamber and disposed adjacent, respectively, the first and second rounded wall sections, the first and second gears having teeth located about their respective peripheries and operatively positioned with the teeth of the first gear and the teeth of the second gear intermeshed for rotation of the first and second gears,the teeth including slotted teeth and solid teeth arranged with uniform spacing in a repeating pattern about the periphery, with each of the slotted teeth having a vane slot and a radially extending vane extending from the vane slot, each radially extending vane being movable within the respective vane slot and being configured to contact the respective first or second rounded wall sections.2. The apparatus of claim 1 , wherein each vane ...

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 ...

Pump insert

A pump insert without a dedicated housing includes a first pressure plate, a cam ring, a rotor, a second pressure plate, and radially displaceable vanes arranged in slots of the rotor and which run with a vane upper edge thereof engaging a contour of the cam ring during rotation of the rotor. The cam ring includes stagnation point protrusions which are configured as separate, moveable components fastened to the cam ring.

VANE-TYPE PUMP AND HEAT RECOVERY DEVICE

A vane-type pump includes a housing and a rotatable rotor having a plurality of slots within which displaceable vanes are disposed. The rotor is disposed in a pump chamber formed in the housing such that delivery cells of variable volume are formed between adjacent vanes. The pump chamber defined by a pair of side walls laterally adjoining the rotor and the vanes, a stroke contour formed between the side walls and having an inner face against which the vanes bear during rotation of the rotor, and a pair of openings one of which serves for charging the delivery cells with a liquid medium and the other of which serves for discharging the pressurized medium. 2. The vane-type pump as claimed in claim 1 , wherein the outer contour of the rotor is arranged at a distance (y) from the stroke contour.3. The vane-type pump as claimed in claim 2 , wherein the distance (y) of the rotor from the stroke contour corresponds to claim 2 , is preferably identical to claim 2 , the distance of (x) of the margin of the ports from the stroke contour.4. The vane-type pump as claimed in claim 1 , wherein the distance (xy) is selected in the range of 0.1 mm to 2 mm and is preferably 0.7 mm to 1.3 mm claim 1 , in particular 1 mm.5. A heat recovery device having an evaporation circuit which comprises a vane-type pump having a housing claim 1 , a rotationally drivable rotor which has a number of slots claim 1 , which in each case receive a displaceable vane claim 1 , conveying cells of variable volume being formed between successive vanes claim 1 , a pump space receiving the rotor having the vanes with side faces bearing laterally against the rotor and against the vanes and with a stroke contour which is arranged between the side faces and against which the outer ends of the vanes bear when the vane-type pump is in operation claim 1 , and ports which are provided in the side faces and at least one of which serves for filling the conveying cells and at least one of which serves for discharging ...