EP1295037B1 - Vane-cell pump - Google Patents

Vane-cell pump Download PDF

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Publication number
EP1295037B1
EP1295037B1 EP01915385A EP01915385A EP1295037B1 EP 1295037 B1 EP1295037 B1 EP 1295037B1 EP 01915385 A EP01915385 A EP 01915385A EP 01915385 A EP01915385 A EP 01915385A EP 1295037 B1 EP1295037 B1 EP 1295037B1
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EP
European Patent Office
Prior art keywords
pump
rotor
stator
vane
pump stator
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Expired - Lifetime
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EP01915385A
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German (de)
French (fr)
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EP1295037A1 (en
Inventor
Willi Schneider
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Joma Hydromechanic GmbH
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Joma Hydromechanic GmbH
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Publication of EP1295037A1 publication Critical patent/EP1295037A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam
    • F04C14/226—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam by pivoting the cam around an eccentric axis

Definitions

  • the invention relates to a vane pump with the features of the preamble of claim 1.
  • the actuator of the pressure control relative to the rotor radially pivotable stator is displaced accordingly, to which acts on a guided in a guide cylinder of the pump bearing housing actuating piston of the pressure control device.
  • the cylinder chamber communicates via a channel directly with the pressure side of the vane pump constantly in communication.
  • the adjusting piston counteracts an opposing force of the pressure control device acting on the actuator, which is generated by at least one compression spring forming a stop. This relies on the one hand at the bottom of a guide cylinder of the actuating piston coaxial, another guide cylinder and on the other hand on a guided in the latter and on the actuator abutting piston.
  • the pressure control device of this known vane pump requires a correspondingly large technical and montageeshingen effort, which is required for accommodating the two coaxial guided actuator and opposed pistons in the pump bearing housing a lot of space.
  • the invention is therefore based on the object to simplify the construction of the pressure control device of vane pumps explained in the preamble of claim 1 type significantly.
  • the pressure control device only one actuator in the form of a pressure in a guide of the pump bearing housing and liquid-tight guided and acted upon directly by the pressure medium rotary piston, which acts as a counter force on the pump stator storage force, for example, at a suitable location in the bearing housing can act on these directly.
  • the construction of the invention thus requires in its simplest form for regulating pivoting of the pump stator only still a pressure and liquid-tight pivotable actuator and at least one in the pump bearing housing with respect to the pump stator in arbitrary arrangement to be accommodated energy storage.
  • the pivoting piston it is preferable to allow the pivoting piston to work against at least one pressure spring which supports it and which generates the accumulator force.
  • the storage power can be variable in order to adjust the maximum delivery pressure variable.
  • the pump stator can be arranged in the bearing housing on a housing-fixed pivot axis or provided with a provided between its two lever arms, part-cylindrical hinge portion with two opposite, fixed housing shells of the pump bearing housing in positive engagement.
  • vane pumps are identical in their main design features and each have a preferably hollow cylindrical pump bearing housing 10, the circular cylindrical, a pump stator 12 receiving housing interior 14 in a known manner closed frontally by planar end walls and, which is not shown for simplicity, analogous to the construction according to DE 33 333 647 A1 , connected to a pressure and a suction line.
  • the pump stator 12 includes a circular cylindrical rotor chamber 16, in which one of a mounted in the end walls of the pump bearing housing 10 pump drive shaft 18 drivable rotor 20 is preferably mounted slightly eccentric. The latter bears circumferentially in a known manner a plurality of radially displaceable, plate-like rotor blades 22, the two wing front ends in the rotor chamber 16, each with a circular guide rail 24 are engaged, which are provided coaxially and fixedly to both chamber end walls of the rotor chamber 16.
  • the guideways 24 are preferably by annular collars 26 formed, which are integrally formed on the chamber end walls of the rotor chamber 16.
  • the pump stator 12 in the pump bearing housing 10 about a parallel to the rotor axis 32, the housing-fixed pivot axis 34 is pivotable.
  • the pump stator 12 forms a double-armed lever, whose one lever arm 36 contains the rotor chamber 16, while the other lever arm 38 as part of the control device 30 fulfills the function of a pivoting piston for pivoting the pump stator 12.
  • This pivoting piston 38 is sector-shaped and guided in a pressure-tight and liquid-tight manner in a guide housing part 10 'integrally formed on the pump bearing housing 10, the distance between its piston outer surface 40 and its pivot axis 34 determining its radius of curvature.
  • At the pressure chamber 46 opposite piston side is supported on the rotary piston 38 for generating the counterforce required for the control of an energy storage, preferably in the form of at least one compression spring 50 from which abuts with its other end to a corresponding wall portion of the guide housing part 10 'and tries to To keep the pump stator 12 relative to the pump rotor 20 constantly in the swivel end position, ie in stop position in the interior 14 of the pump bearing housing 10, the maximum pump performance guaranteed (see Figure a) Fig. 1 ).
  • the control device 30 ensures that the flow rate and the working pressure is automatically adjusted to given requirements.
  • FIG. 1 shows, for example, the self-adjusting setting of the pump stator 12, provided that only half the pump power is required according to the requirements.
  • stator 12' forms in this case a part-cylindrical hinge portion formed with two to the pump bearing housing 10, opposing, segment-shaped bearing shells in positive Engaging, one of which is formed by the wall portion 44 of the pump bearing housing 10 'and the other is denoted by 52.
  • bearing overlap> is designed as 180 °.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

The invention relates to a vane-cell pump comprising a pump rotor (20), provided with a radially displaceable rotor blade (22). Said pump rotor is mounted in a pump stator (12) which can be pivoted inside a pump bearing house (10) around a stationary pivotal axis (34) in a radial position with regard to said pump rotor. A control device (30) is associated with the pump stator (12) for automatic pressure adjustment. Said control device has an actuating member protruding on the outside, therefrom, perpendicular to the pivotal axis thereof. The actuating member forms a pivoting piston (38) in a guide element (10) of the pumpbearing housing (10) which is directly impinged upon by a pumping medium. The pivotable piston can pivot in a direction against the action of a pressure spring (50).

Description

Die Erfindung betrifft eine Flügelzellenpumpe mit den Merkmalen des Oberbegriffs von Anspruch 1.The invention relates to a vane pump with the features of the preamble of claim 1.

Eine diese baulichen Merkmale aufweisende Flügelzellenpumpe ist aus DE 33 33 647 A1 bekannt.One of these structural features having vane pump is off DE 33 33 647 A1 known.

Ihre Konstruktion gewährleistet, dass die Menge und der Druck eines zu fördernden flüssigen Mediums, beispielsweise Schmieröl für eine Druckumlaufschmierung, an die Erfordernisse und den jeweiligen Zustand eines zu schmierenden Aggregates, wie Verbrennungsmotor, selbsttätig angepasst werden.Their construction ensures that the quantity and pressure of a liquid medium to be conveyed, for example lubricating oil for pressure circulation lubrication, are automatically adapted to the requirements and the respective state of a unit to be lubricated, such as an internal combustion engine.

Zu diesem Zweck wird das Stellglied des zur Druckregelung relativ zum Rotor radial verschwenkbaren Stators entsprechend verlagert, wozu auf dasselbe ein in einem Führungszylinder des Pumpenlagergehäuses geführter Stellkolben der Druckregelvorrichtung einwirkt. Der Zylinderraum steht dabei über einen Kanal unmittelbar mit der Druckseite der Flügelzellenpumpe ständig in Verbindung. Dem Stellkolben wirkt eine am Stellglied angreifende Gegenkraft der Druckregelvorrichtung entgegen, die durch wenigstens eine einen Anschlag bildende Druckfeder erzeugt wird. Diese stützt sich einerseits am Boden eines zum Führungszylinder des Stellkolbens koaxialen, weiteren Führungszylinders und andererseits an einem in letzterem geführten und am Stellglied anliegenden Gegenkolben ab.For this purpose, the actuator of the pressure control relative to the rotor radially pivotable stator is displaced accordingly, to which acts on a guided in a guide cylinder of the pump bearing housing actuating piston of the pressure control device. The cylinder chamber communicates via a channel directly with the pressure side of the vane pump constantly in communication. The adjusting piston counteracts an opposing force of the pressure control device acting on the actuator, which is generated by at least one compression spring forming a stop. This relies on the one hand at the bottom of a guide cylinder of the actuating piston coaxial, another guide cylinder and on the other hand on a guided in the latter and on the actuator abutting piston.

Durch entsprechende Vorspannung der Druckfeder der Druckregelvorrichtung lässt sich dabei der Förderdruck in Abhängigkeit von der Federcharakteristik einstellen.By appropriate bias of the compression spring of the pressure control device can be adjusted depending on the spring characteristic of the delivery pressure.

Die Druckregelvorrichtung dieser bekannten Flügelzellenpumpe erfordert einen entsprechend großen technischen und montagemäßigen Aufwand, wobei zur Unterbringung der beiden zueinander koaxial geführten Stell- und Gegenkolben im Pumpenlagergehäuse etnsprechend viel Platz benötigt wird.The pressure control device of this known vane pump requires a correspondingly large technical and montageemäßigen effort, which is required for accommodating the two coaxial guided actuator and opposed pistons in the pump bearing housing a lot of space.

Aus der DE-A-40 14 636 ist eine Rotationspumpe und aus der DE-A-42 01 257 ist eine Flügelzellenpumpe bekannt. Die Druckregelung ist bei diesen Pumpen relativ aufwändig.From the DE-A-40 14 636 is a rotary pump and out of the DE-A-42 01 257 is a vane pump known. The pressure control is relatively complex with these pumps.

Der Erfindung liegt daher die Aufgabe zugrunde, die Konstruktion der Druckregelvorrichtung von Flügelzellenpumpen der im Oberbegriff des Anspruches 1 erläuterten Art wesentlich zu vereinfachen.The invention is therefore based on the object to simplify the construction of the pressure control device of vane pumps explained in the preamble of claim 1 type significantly.

Diese Aufgabe wird durch eine Flügelzellenpumpe gelöst, die die Merkmale des Anspruches 1 aufweist.This object is achieved by a vane pump having the features of claim 1.

Bei der erfindungsgemäßen Konstruktion umfasst somit die Druckregelvorrichtung lediglich noch ein Stellglied in Form eines in einer Führung des Pumpenlagergehäuses druck- und flüssigkeitsdicht geführten und vom Druckmedium unmittelbar beaufschlagten Schwenkkolbens, wobei die als Gegenkraft auf den Pumpenstator wirkende Speicherkraft z.B. an geeigneter Stelle im Lagergehäuse auf diesen direkt einwirken kann.In the construction according to the invention thus comprises the pressure control device only one actuator in the form of a pressure in a guide of the pump bearing housing and liquid-tight guided and acted upon directly by the pressure medium rotary piston, which acts as a counter force on the pump stator storage force, for example, at a suitable location in the bearing housing can act on these directly.

Die erfindungsgemäße Konstruktion benötigt somit in ihrer einfachsten Form zum regelnden Verschwenken des Pumpenstators lediglich noch ein druck- und flüssigkeitsdicht verschwenkbares Stellglied sowie wenigstens einen im Pumpenlagergehäuse in Bezug auf den Pumpenstator in frei wählbarer Anordnung unterzubringenden Kraftspeicher.The construction of the invention thus requires in its simplest form for regulating pivoting of the pump stator only still a pressure and liquid-tight pivotable actuator and at least one in the pump bearing housing with respect to the pump stator in arbitrary arrangement to be accommodated energy storage.

Bevorzugt wird man hierbei den Schwenkkolben gegen wenigstens eine sich an diesem abstützende, die Speicherkraft erzeugende Druckfeder arbeiten lassen.In this case, it is preferable to allow the pivoting piston to work against at least one pressure spring which supports it and which generates the accumulator force.

Die Speicherkraft kann dabei veränderbar sein, um den maximalen Förderdruck variabel einstellen zu können.The storage power can be variable in order to adjust the maximum delivery pressure variable.

Dies kann durch Hintereinanderschalten von Druckfedern schrittweise oder dadurch erfolgen, dass eine Druckfeder stufenlos vorspannbar vorgesehen ist.This can be done step by step or by the fact that a compression spring is provided continuously biased by cascading of compression springs.

Der Pumpenstator kann im Lagergehäuse auf einer gehäusefesten Schwenkachse angeordnet oder mit einem zwischen seinen beiden Hebelarmen vorgesehenen, teilzylindrischen Gelenkabschnitt mit zwei einander gegenüberliegenden, gehäusefesten Lagerschalen des Pumpenlagergehäuses in formschlüssigen Eingriff gebracht sein.The pump stator can be arranged in the bearing housing on a housing-fixed pivot axis or provided with a provided between its two lever arms, part-cylindrical hinge portion with two opposite, fixed housing shells of the pump bearing housing in positive engagement.

Die wesentlichen Merkmale und Einzelheiten der Erfindung sind aus in der Zeichnung beispielhaft und vereinfacht dargestellten Ausführungsformen von Flügelzellenpumpen zu entnehmen.The essential features and details of the invention are shown in the drawing by way of example and simplified illustrated embodiments of vane pumps.

In der Zeichnung zeigen:In the drawing show:

Figur 1FIG. 1
einen Querschnitt durch die Flügelzellenpumpe, wobei anhand der Abbildungen a) bis c) durch die Druckregelvorrichtung bewirkte, unterschiedliche Druckregelvorrichtung bewirkte, unterschiedliche Einstellungen des Pumpenstators zur Anpassung des Fördervolumens veranschaulicht sind; unda cross-section through the vane pump, wherein based on the figures a) to c) caused by the pressure control device, different Pressure regulator caused, different settings of the pump stator for adjusting the delivery volume are illustrated; and
Figur 2FIG. 2
einen Querschnitt der Flügelzellenpumpe.a cross section of the vane pump.

Die in den Figuren 1 und 2 gezeigten Flügelzellenpumpen sind in ihren hauptsächlichen Konstruktionsmerkmalen identisch und weisen jeweils ein vorzugsweise hohlzylindrisches Pumpenlagergehäuse 10 auf, dessen kreiszylindrischer, einen Pumpenstator 12 aufnehmender Gehäuseinnenraum 14 in bekannter Weise stirnseitig von planen Stirnwänden verschlossen sowie, was einfachheitshalber nicht dargestellt ist, analog zur Konstruktion gemäß DE 33 333 647 A1 , an einer Druck- und einer Saugleitung angeschlossen ist.The in the FIGS. 1 and 2 shown vane pumps are identical in their main design features and each have a preferably hollow cylindrical pump bearing housing 10, the circular cylindrical, a pump stator 12 receiving housing interior 14 in a known manner closed frontally by planar end walls and, which is not shown for simplicity, analogous to the construction according to DE 33 333 647 A1 , connected to a pressure and a suction line.

Der Pumpenstator 12 enthält eine kreiszylindrische Rotorkammer 16, in der ein von einer in den Stirnwänden des Pumpenlagergehäuses 10 gelagerten Pumpenantriebswelle 18 antreibbarer Rotor 20 vorzugsweise etwas exzentrisch gelagert ist. Letzterer trägt umfangsseitig in bekannter Weise eine Vielzahl von radial verschiebbaren, plattenartigen Rotorflügeln 22, deren beiden Flügelstirnenden in der Rotorkammer 16 mit jeweils einer kreisförmigen Führungsbahn 24 in Eingriff sind, die an beiden Kammerstirnwänden der Rotorkammer 16 zueinander koaxial und feststehend vorgesehen sind. Die Führungsbahnen 24 sind vorzugsweise durch Ringbunde 26 gebildet, die an die Kammerstirnwände der Rotorkammer 16 angeformt sind.The pump stator 12 includes a circular cylindrical rotor chamber 16, in which one of a mounted in the end walls of the pump bearing housing 10 pump drive shaft 18 drivable rotor 20 is preferably mounted slightly eccentric. The latter bears circumferentially in a known manner a plurality of radially displaceable, plate-like rotor blades 22, the two wing front ends in the rotor chamber 16, each with a circular guide rail 24 are engaged, which are provided coaxially and fixedly to both chamber end walls of the rotor chamber 16. The guideways 24 are preferably by annular collars 26 formed, which are integrally formed on the chamber end walls of the rotor chamber 16.

Durch das Zusammenwirken der Führungsbahnen 24 mit den Flügelstirnenden ist sichergestellt, dass die Rotorflügel 22 auch bei Rotorstillstand in einer solchen Radialstellung zur Umfangswand 28 der Rotorkammer 16 sich befinden, dass bereits zu Beginn einer Rotordrehung Strömungsmittel gefördert wird.Through the interaction of the guideways 24 with the wing front ends, it is ensured that the rotor vanes 22 are in such a radial position to the peripheral wall 28 of the rotor chamber 16 even at rotor standstill that fluid is conveyed already at the beginning of a rotor rotation.

Zur selbsttätigen Regelung der Fördermenge dient eine als Ganzes mit 30 bezeichnete Regelvorrichtung, mit deren Hilfe hierzu die Relativstellung der Rotorkammerumfangswend 28 samt Ringbunden 26 bzw. des Pumpenstators 12 zum Rotor 20 vorzugsweise stufenlos veränderbar ist.For automatic control of the flow rate serves as a whole designated 30 control device, with the aid of which the relative position of Rotorkammerumfangswend 28 together with annular collars 26 and the Pumpenstators 12 to the rotor 20 is preferably continuously variable.

Zu diesem Zweck ist der Pumpenstator 12 im Pumpenlagergehäuse 10 um eine zur Rotorachse 32 parallele, gehäusefeste Schwenkachse 34 verschwenkbar.For this purpose, the pump stator 12 in the pump bearing housing 10 about a parallel to the rotor axis 32, the housing-fixed pivot axis 34 is pivotable.

Bei den gezeigten Ausführungsbeispielen bildet hierzu der Pumpenstator 12 einen doppelarmigen Hebel, dessen einer Hebelarm 36 die Rotorkammer 16 enthält, während dessen anderer Hebelarm 38 als Teil der Regelvorrichtung 30 die Funktion eines Schwenkkolbens zum Verschwenken des Pumpenstators 12 erfüllt.In the embodiments shown, the pump stator 12 forms a double-armed lever, whose one lever arm 36 contains the rotor chamber 16, while the other lever arm 38 as part of the control device 30 fulfills the function of a pivoting piston for pivoting the pump stator 12.

Dieser Schwenkkolben 38 ist sektorförmig und in einem an das Pumpenlagergehäuse 10 umfangsseitig angeformten Führungsgehäuseteil 10' druck- und flüssigkeitsdicht geführt, wobei der Abstand seiner Kolbenaußenfläche 40 zu dessen Schwenkachse 34 deren Krümmungsradius bestimmt.This pivoting piston 38 is sector-shaped and guided in a pressure-tight and liquid-tight manner in a guide housing part 10 'integrally formed on the pump bearing housing 10, the distance between its piston outer surface 40 and its pivot axis 34 determining its radius of curvature.

Der im Übergangsbereich der beiden Hebelarme 36 und 38 vorhandene und die Schwenkachse 34 aufnehmende Teil 12' des Pumpenstators 12 liegt mit entsprechend teilkreisförmiger, konvexer Krümmung 42 an einem komplementären Wandteil 44 des Führungsgehäuseteils 10' druck- und flüssigkeitsdicht an, so dass dadurch ein Druckraum 46 für die Beaufschlagung des Schwenkkolbens 38 mit Strömungsmittel gebildet ist, der, was einfachheitshalber nicht gezeigt ist, über einen Verbindungs- bzw. Regelkanal mit der Pumpendruckseite (bei 48) ständig in Verbindung steht.The existing in the transition region of the two lever arms 36 and 38 and the pivot axis 34 receiving part 12 'of Pumpenstators 12 is with corresponding part-circular, convex curvature 42 on a complementary wall portion 44 of the guide housing part 10' pressure and liquid-tight, so that thereby a pressure chamber 46th is formed for the loading of the rotary piston 38 with fluid, which, for simplicity, is not shown, via a connection or control channel with the pump pressure side (at 48) is constantly in communication.

An der dem Druckraum 46 gegenüberliegendem Kolbenseite stützt sich am Schwenkkolben 38 zur Erzeugung der für die Regelung erforderlichen Gegenkraft ein Kraftspeicher, vorzugsweise in Form wenigstens einer Druckfeder 50 ab, die mit ihrem anderen Ende an einem entsprechenden Wandteil des Führungsgehäuseteils 10' anliegt und die versucht, den Pumpenstator 12 relativ zum Pumpenrotor 20 ständig in der Schwenkendstellung, d.h. in Anschlagposition im Innenraum 14 des Pumpenlagergehäuses 10 zu halten, die maximale Pumpenleistung gewährleistet (s. Abbildung a) der Fig. 1).At the pressure chamber 46 opposite piston side is supported on the rotary piston 38 for generating the counterforce required for the control of an energy storage, preferably in the form of at least one compression spring 50 from which abuts with its other end to a corresponding wall portion of the guide housing part 10 'and tries to To keep the pump stator 12 relative to the pump rotor 20 constantly in the swivel end position, ie in stop position in the interior 14 of the pump bearing housing 10, the maximum pump performance guaranteed (see Figure a) Fig. 1 ).

Die Regelvorrichtung 30 stellt dabei sicher, dass die Fördermenge sowie der Arbeitsdruck an gegebene Erfordernisse selbsttätig angepasst wird.The control device 30 ensures that the flow rate and the working pressure is automatically adjusted to given requirements.

Die Abbildung b) der Fig. 1 zeigt beispielsweise die sich selbsttätig einregelnde Einstellung des Pumpenstators 12, sofern den Erfordernissen entsprechend lediglich noch die halbe Pumpleistung gefordert ist.Figure b) the Fig. 1 shows, for example, the self-adjusting setting of the pump stator 12, provided that only half the pump power is required according to the requirements.

Die Abbildung c) veranschaulicht hingegen eine Einstellung des Pumpenstators 12 bei Förderleistung Null.The figure c), however, illustrates an adjustment of the pump stator 12 at zero flow.

Bei der Ausführungsform der Flügelzellenpumpe gemäß Fig. 2 besteht ein konstruktiver Unterschied lediglich in der Schwenklagerung und des die Schwenkachse 34 aufnehmenden Teils 12' des doppelarmigen Pumpenstators 12. Der Statorteil 12' bildet in diesem Falle einen teilzylindrischen Gelenkabschnitt, der mit zwei an das Pumpenlagergehäuse 10 angeformten, einander gegenüberliegenden, segmentförmigen Lagerschalen in formschlüssigem Eingriff ist, von denen die eine durch den Wandteil 44 des Pumpenlagergehäuses 10' gebildet und die andere mit 52 bezeichnet ist. Hierbei ist entscheidend, dass die Lagerüberdeckung > als 180° ausgelegt ist.In the embodiment of the vane pump according to Fig. 2 there is a constructive difference only in the pivot bearing and the pivot axis 34 receiving part 12 'of the double-arm pump stator 12. The stator 12' forms in this case a part-cylindrical hinge portion formed with two to the pump bearing housing 10, opposing, segment-shaped bearing shells in positive Engaging, one of which is formed by the wall portion 44 of the pump bearing housing 10 'and the other is denoted by 52. Here it is crucial that the bearing overlap> is designed as 180 °.

Es ist klar, dass die erläuterte Erfindung gleich vorteilhaft auch auf Flügelzellenmotoren übertragbar ist.It is clear that the illustrated invention is equally advantageous transferable to vane motors.

Claims (4)

  1. Vane-cell pump comprising a pump rotor (20) having a cooperating drive shaft (18) and a plurality of radially displaceable rotor blades (22), the pump rotor (20) disposed in a rotor chamber (16) of a pump stator (12) having an inlet and an outlet, the pump stator (12) forming a two-armed lever and being radially pivotable relative to the pump rotor (20) within a pump bearing housing (10) about a stationary pivot axis (34), wherein the pump stator (12) has an associated regulating device (30) for automatic pressure control which comprises an actuator (38) external to the pump stator (12) which projects transverse to the pivot axis (34) of the pump stator (12), the actuator (38) being a pivot piston (38) which is guided in a guide (10') of the pump bearing housing (10) and which is directly loaded by the supply medium and to be pivoted by the supply medium at the pressure side of the rotor chamber (16) against the reaction of a storing energy, characterized in that one lever arm (36) of the pump stator (12) contains the rotor chamber (16) with the other lever arm constituting the pivot piston (38).
  2. Vane-cell pump according to claim 1, characterized in that the pivot piston (38) can be pivoted against a compression spring (50) seating thereon for continuous or stepwise change of the stored energy.
  3. Vane-cell pump according to claim 1 or 2, characterized in that the pump stator (12) is disposed on a pivot axis (34) which is fixed to the housing.
  4. Vane-cell pump according to any one of the preceding claims, characterized in that the pump stator (12) has a partially cylindrical hinge section (12') between its two lever arms (36, 38) which is in positive engagement with two opposed segment-shaped bearing shells (44, 52) of the pump bearing housing (10).
EP01915385A 2000-06-26 2001-03-20 Vane-cell pump Expired - Lifetime EP1295037B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10029969A DE10029969C1 (en) 2000-06-26 2000-06-26 Vane pump
DE10029969 2000-06-26
PCT/EP2001/003178 WO2002001074A1 (en) 2000-06-26 2001-03-20 Vane-cell pump

Publications (2)

Publication Number Publication Date
EP1295037A1 EP1295037A1 (en) 2003-03-26
EP1295037B1 true EP1295037B1 (en) 2008-12-17

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Application Number Title Priority Date Filing Date
EP01915385A Expired - Lifetime EP1295037B1 (en) 2000-06-26 2001-03-20 Vane-cell pump

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US (1) US6722856B2 (en)
EP (1) EP1295037B1 (en)
CN (1) CN1245579C (en)
AT (1) ATE418010T1 (en)
DE (2) DE10029969C1 (en)
WO (1) WO2002001074A1 (en)

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JP4928447B2 (en) * 2004-06-24 2012-05-09 ルーク アウトモービルテヒニーク ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディトゲゼルシャフト pump
CA2588817C (en) 2004-12-22 2012-05-01 Magna Powertrain Inc. Variable capacity vane pump with dual control chambers
US9181803B2 (en) 2004-12-22 2015-11-10 Magna Powertrain Inc. Vane pump with multiple control chambers
AT502189B1 (en) 2005-07-29 2007-02-15 Miba Sinter Holding Gmbh & Co VANE PUMP
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EP1295037A1 (en) 2003-03-26
ATE418010T1 (en) 2009-01-15
DE50114586D1 (en) 2009-01-29
WO2002001074A1 (en) 2002-01-03
US20030012665A1 (en) 2003-01-16
DE10029969C1 (en) 2001-08-30
US6722856B2 (en) 2004-04-20
CN1245579C (en) 2006-03-15
CN1439079A (en) 2003-08-27

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