EP1934478A1 - Vane cell pump - Google Patents

Vane cell pump

Info

Publication number
EP1934478A1
EP1934478A1 EP06776762A EP06776762A EP1934478A1 EP 1934478 A1 EP1934478 A1 EP 1934478A1 EP 06776762 A EP06776762 A EP 06776762A EP 06776762 A EP06776762 A EP 06776762A EP 1934478 A1 EP1934478 A1 EP 1934478A1
Authority
EP
European Patent Office
Prior art keywords
stator
vane pump
pump according
rotor
arms
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06776762A
Other languages
German (de)
French (fr)
Other versions
EP1934478B1 (en
Inventor
Willi Schneider
Torsten Helle
Dirk Ehrenfeld
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Joma Hydromechanic GmbH
Original Assignee
Joma Hydromechanic GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE200510048602 external-priority patent/DE102005048602B4/en
Priority claimed from DE102006021251A external-priority patent/DE102006021251B4/en
Application filed by Joma Hydromechanic GmbH filed Critical Joma Hydromechanic GmbH
Publication of EP1934478A1 publication Critical patent/EP1934478A1/en
Application granted granted Critical
Publication of EP1934478B1 publication Critical patent/EP1934478B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C2/3445—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the vanes having the form of rollers, slippers or the like

Definitions

  • the invention relates to a vane pump having an outer rotor, an inner rotor and a plurality of vanes, which are mounted radially displaceably in substantially radial slots in the inner rotor and pivotally mounted on the outer rotor and the outer rotor slides along the inner peripheral surface of a stator, wherein the axis of the stator and the axis of the inner rotor have an offset from one another and the stator with respect to the inner rotor in the radial direction adjustable and thereby the offset is variable, and the stator is partially surrounded by a mounted in the housing of the vane pump in a pivot bearing bracket.
  • a vane pump with an annular inner rotor in which a plurality of radially outwardly extending wing elements are received radially displaceable.
  • the radially inner end portions of the wing elements are supported on a non-rotatable central part, the radially outer end portions of a non-rotatable outer ring.
  • the rotor can be rotated about a rotation axis that is offset from the central axis of the central part and the outer ring. In this way, at a rotational movement of the rotor between the wing elements initially larger and then smaller again conveying cells. Due to the change in volume of the delivery cells fluid is first sucked into the delivery cells and then ejected again.
  • a vane pump can be made simple and inexpensive.
  • a vane pump in the form of a pendulum slide pump is known from DE 195 32 703 Cl.
  • the wing elements are slidably received in an inner rotor, whereas they are pivotally supported in an annular outer rotor.
  • the axis of rotation of the inner rotor is offset with respect to the axis of rotation of the outer rotor, whereby in operation also initially magnifying and then shrinking conveyor cells are formed.
  • the known from DE 195 32 703 Cl pendulum slide pump is complex and therefore expensive to manufacture.
  • the invention has for its object to provide a vane pump whose pumping power is sensitive adjustable.
  • Vane pump of the aforementioned type achieved in that the bracket has on both sides of the pivot bearing projecting bracket arms, and the bracket arms embrace the stator in each case partially.
  • the stator is moved not only by means of a single bail arm, for which the stator must be firmly connected to the bail arm, but that the stator is surrounded by the two bracket arms that embrace this bifurcated.
  • only one of the bracket arms are subjected to a pressure, whereas the other arm is driven in other ways, for example by means of a spring.
  • both arms can each be subjected to a pressure, so that the position of the stator is determined by the two pressures. In this way, a very fine setting or positioning of the stator can be achieved, which is required for map control.
  • both bow arms are hydraulically or pneumatically pivotable.
  • the prevailing in the system oil pressure can be used to control, or in pneumatic systems, the prevailing positive or negative pressure can be used to control the hanger arms.
  • a bail arm is pivotable by means of a spring.
  • the stator is adjustable by means of a spring.
  • This spring which is in particular biased, has the task to adjust the bracket and / or the stator in the direction of maximum delivery of the pump, that is, either maximum pressure or maximum negative pressure. This is necessary if in a fault, the pneumatic or hydraulic control of the hanger arms fails.
  • the control of the strap by means of the mechanical spring ensures that the system is supplied with the required hydraulic or pneumatic pressure or with the pneumatic negative pressure.
  • the spring may be a coil spring, leaf spring, leg spring or a pneumatic cushion.
  • the invention provides that the free ends of the hanger arms have piston surfaces for a pressure medium.
  • the adjusting force can be determined so that the applied pressure can be passed directly to the piston surfaces.
  • the piston surfaces are slidably mounted in provided in the housing of the vane pump guides. These guides serve on the one hand for sealing the piston relative to the housing, on the other hand for the exact guidance and storage of the free ends of the hanger arms.
  • FIG. 1 shows a cross section through a vane pump, partially cut away
  • Figure 2 is a perspective view of a
  • Vane pump without housing according to a first embodiment
  • Figure 3 is a perspective view of a
  • Vane pump without housing according to a second embodiment.
  • FIG. 1 shows schematically a housing 10 of a generally designated 12 vane pump, in which a drive shaft 14 is rotatably mounted.
  • This drive shaft 14 drives an inner rotor 16, which has a plurality of radial slots 18, in which wings 20 are mounted radially displaceable.
  • These wings 20 have a thickened free end 22 to which sliding blocks 24 are pivotally mounted.
  • These sliding shoes 24 abut against the inner circumferential surface 26 of a stator 28 and form an outer rotor designated overall by 8.
  • the inner rotor 16, two wings 20, two sliding shoes 24 and the stator 28 each have a working space 30. This is clearly visible in the cut-open section of the vane pump 12 in FIG.
  • the working space 30 increases and decreases with rotating inner rotor 16, whereby a fluid is conveyed.
  • a fork-shaped bracket 34 is pivotally mounted, wherein the bracket 34 has two hanger arms 36 and 38 which abut at least partially on the stator 28 and embrace this.
  • the free ends 40 and 42 of the yoke arms 36 and 38 have piston surfaces 44, which acts on a prevailing in the pressure chambers 46 and 48 fluid.
  • the bail arms 36 and 38 are guided in guides 50, via which they are sealed fluid-tight and wherein the guides 50 represent cylindrical surfaces.
  • the bail arm 36 and thus the entire bail 34 is pivoted in the direction of the arrow 52 about the pivot axis of the pivot bearing 32, whereby the stator 28 in the direction of the arrow 52 is taken.
  • the stator 28 has an axis 54 which has an offset 60 with respect to the axis 56 of the drive shaft 40.
  • this offset 60 is reduced, thereby reducing the eccentricity of the inner rotor 16 to the stator 28 or outer rotor 8, whereby the working volume of the vane pump 12 is reduced.
  • a mechanical spring 58 in particular a helical spring, which tries to displace the stator 28 against the direction of the arrow 52, engages on the underside of the stator 28 in a suitable manner. This displacement direction acts in the direction of maximum delivery of the vane pump 12.
  • stator 28 is displaced in any case in the direction of maximum promotion, thereby ensuring that the vane pump 12, the fluid to be pumped or a negative pressure sufficiently provides.
  • This spring 58 is only used to adjust the vane pump 12 for the accident.
  • the regular return of the stator 28 in the direction of the maximum delivery takes place by applying a pressure to the piston surface 44 of the bail arm 38 or by reducing the pressure on the piston surface 44 of the bail arm 36.

Landscapes

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

Abstract

The invention relates to a vane cell pump comprising an external rotor (8), an internal rotor (16) and a plurality of vanes (20) which are secured in a pivotable manner on the external rotor (8) and which are displacably mounted in a radial manner in the inner rotor (16), essentially in radial slots (18). The external rotor (8) is guided along the inner circumferential surface of a stator (28). The axis of the stator and the axis of the internal rotor are offset in relation to each other, and the stator (28) can be adjusted in the radial direction in relation to the internal rotor (16) and can be modified by the offset. Said stator (28) is partially enclosed by a clamp (34) which is mounted in a pivotable bearing (32) in the housing of the vane cell pump. The clamp (34) comprises clamp arms (36, 38) which protrude on both sides of the pivotable bearing (32), which partially enclose, respectively, the stator (28).

Description

Titel: FlügelzellenpumpeTitle: Vane pump
Beschreibungdescription
Die Erfindung betrifft eine Flügelzellenpumpe mit einem Außenrotor, einem Innenrotor und einer Vielzahl von Flügeln, die in im Wesentlichen radialen Schlitzen im Innenrotor radial verschieblich gelagert und am Außenrotor schwenkbar befestigt sind und der Außenrotor an der Innenumfangsflache eines Stators entlang gleitet, wobei die Achse des Stators und die Achse des Innenrotors einen Versatz zueinander aufweisen und der Stator bezüglich des Innenrotors in radialer Richtung verstellbar und dadurch der Versatz veränderbar ist, und der Stator von einem im Gehäuse der Flügelzellenpumpe in einem Schwenklager gelagerten Bügel teilweise umgriffen ist.The invention relates to a vane pump having an outer rotor, an inner rotor and a plurality of vanes, which are mounted radially displaceably in substantially radial slots in the inner rotor and pivotally mounted on the outer rotor and the outer rotor slides along the inner peripheral surface of a stator, wherein the axis of the stator and the axis of the inner rotor have an offset from one another and the stator with respect to the inner rotor in the radial direction adjustable and thereby the offset is variable, and the stator is partially surrounded by a mounted in the housing of the vane pump in a pivot bearing bracket.
Aus der DE 100 40 711 Al ist eine Flügelzellenpumpe mit einem ringförmigen Innenrotor bekannt, in dem eine Mehrzahl von sich radial nach außen erstreckenden Flügelelementen radial verschieblich aufgenommen sind. Die radial inneren Endbereiche der Flügelelemente stützen sich an einem drehfesten Zentralteil ab, die radial außen liegenden Endbereiche an einem drehfesten Außenring. Der Rotor kann um eine Drehachse gedreht werden, die gegenüber der Mittelachse des Zentralteils und des Außenrings versetzt ist. Auf diese Weise bilden sich bei einer Drehbewegung des Rotors zwischen den Flügelelementen zunächst größer und dann wieder kleiner werdende Förderzellen. Durch die Volumenänderung der Förderzellen wird zunächst Fluid in die Förderzellen angesaugt und dann wieder ausgestoßen. Die Endbereiche der Flügelelemente gleiten auf dem Zentralteil bzw. dem Außenring. Eine solche Flügelzellenpumpe kann einfach und preiswert hergestellt werden. Zur Erhöhung des Wirkungsgrades ist aus der DE 195 32 703 Cl eine Flügelzellenpumpe in Form einer Pendelschieberpumpe bekannt. Bei dieser sind die Flügelelemente in einem Innenrotor verschieblich aufgenommen, wohingegen sie in einem ringförmigen Außenrotor schwenkbar gehalten sind. Die Drehachse des Innenrotors ist gegenüber der Drehachse des Außenrotors versetzt, wodurch im Betrieb ebenfalls sich zunächst vergrößernde und dann wieder verkleinernde Förderzellen gebildet werden. Die aus der DE 195 32 703 Cl bekannte Pendelschieberpumpe ist jedoch komplex und somit teuer in der Herstellung.From DE 100 40 711 Al a vane pump with an annular inner rotor is known in which a plurality of radially outwardly extending wing elements are received radially displaceable. The radially inner end portions of the wing elements are supported on a non-rotatable central part, the radially outer end portions of a non-rotatable outer ring. The rotor can be rotated about a rotation axis that is offset from the central axis of the central part and the outer ring. In this way, at a rotational movement of the rotor between the wing elements initially larger and then smaller again conveying cells. Due to the change in volume of the delivery cells fluid is first sucked into the delivery cells and then ejected again. The end regions of the wing elements slide on the central part or the outer ring. Such a vane pump can be made simple and inexpensive. To increase the efficiency of a vane pump in the form of a pendulum slide pump is known from DE 195 32 703 Cl. In this, the wing elements are slidably received in an inner rotor, whereas they are pivotally supported in an annular outer rotor. The axis of rotation of the inner rotor is offset with respect to the axis of rotation of the outer rotor, whereby in operation also initially magnifying and then shrinking conveyor cells are formed. However, the known from DE 195 32 703 Cl pendulum slide pump is complex and therefore expensive to manufacture.
Der Erfindung liegt die Aufgabe zugrunde, eine Flügelzellenpumpe bereit zu stellen, deren Pumpleistung feinfühliger verstellbar ist.The invention has for its object to provide a vane pump whose pumping power is sensitive adjustable.
Diese Aufgabe wird erfindungsgemäß bei einerThis object is achieved with a
Flügelzellenpumpe der eingangs genannten Art dadurch gelöst, dass der Bügel beidseits des Schwenklagers abragende Bügelarme aufweist, und die Bügelarme den Stator jeweils teilweise umgreifen.Vane pump of the aforementioned type achieved in that the bracket has on both sides of the pivot bearing projecting bracket arms, and the bracket arms embrace the stator in each case partially.
Durch die erfindungsgemäße Ausgestaltung der Flügelzellenpumpe wird die Möglichkeit geschaffen, dass der Stator nicht nur mittels eines einzigen Bügelarms bewegt wird, wofür der Stator fest mit dem Bügelarm verbunden werden muss, sondern dass der Stator von den beiden Bügelarmen umfangen wird, die diesen gabelförmig umgreifen. Dabei kann bei einer Ausführungsform lediglich einer der Bügelarme mit einem Druck beaufschlagt werden, wohingegen der andere Bügelarm auf andere Weise, z.B. mittels einer Feder angetrieben wird. Oder bei einer anderen Ausführungsform können beide Bügelarme jeweils mit einem Druck beaufschlagt werden, so dass die Lage des Stators von den beiden Drücken bestimmt wird. Hierdurch kann eine sehr feine Einstellung beziehungsweise Positionierung des Stators erzielt werden, was bei Kennfeldregelungen erforderlich ist. Da die beiden Bügelarme den Stator in entgegengesetzte Richtungen antreiben, können schon kleinste Druckänderungen bei der Positionierung des Stators berücksichtigt werden. Insbesondere muss nicht gegen eine Federkonstante gearbeitet werden, was den Nachteil hat, dass gegen eine sich ändernde Kraft einer Feder, das heißt gegen eine Federkonstante, gearbeitet werden muss. Es können direkt die anfallenden Drücke zum Verlagern des Stators, und zwar in beide Richtungen verwendet werden.The inventive design of the vane pump, the possibility is created that the stator is moved not only by means of a single bail arm, for which the stator must be firmly connected to the bail arm, but that the stator is surrounded by the two bracket arms that embrace this bifurcated. In this case, in one embodiment, only one of the bracket arms are subjected to a pressure, whereas the other arm is driven in other ways, for example by means of a spring. Or in another embodiment, both arms can each be subjected to a pressure, so that the position of the stator is determined by the two pressures. In this way, a very fine setting or positioning of the stator can be achieved, which is required for map control. Because the two Bail arms drive the stator in opposite directions, even the smallest pressure changes in the positioning of the stator can be considered. In particular, it is not necessary to work against a spring constant, which has the disadvantage that it is necessary to work against a changing force of a spring, that is to say against a spring constant. It can directly the resulting pressures for displacing the stator, to be used in both directions.
Bei einer Weiterbildung ist vorgesehen, dass beide Bügelarme hydraulisch oder pneumatisch verschwenkbar sind. Dabei kann zum Beispiel der im System herrschende Öldruck zur Ansteuerung verwendet werden, oder bei Pneumatiksystemen kann der herrschende Über- oder Unterdruck zur Ansteuerung der Bügelarme verwendet werden.In a further development it is provided that both bow arms are hydraulically or pneumatically pivotable. In this case, for example, the prevailing in the system oil pressure can be used to control, or in pneumatic systems, the prevailing positive or negative pressure can be used to control the hanger arms.
Bei einer Weiterbildung ist vorgesehen, dass ein Bügelarm mittels einer Feder verschwenkbar ist. Bei einer Variante ist vorgesehen, dass der Stator mittels einer Feder verstellbar ist. Diese Feder, die insbesondere vorgespannt ist, hat die Aufgabe, den Bügel und/oder den Stator in Richtung der Maximalförderung der Pumpe, das heißt entweder maximaler Druck oder maximaler Unterdruck, zu verstellen. Dies ist dann erforderlich, wenn in einem Störfall die pneumatische oder hydraulische Ansteuerung der Bügelarme ausfällt. Durch die Ansteuerung des Bügels mittels der mechanischen Feder ist sichergestellt, dass das System mit dem erforderlichen hydraulischen oder pneumatischen Druck oder mit dem pneumatischen Unterdruck versorgt wird. Dabei kann die Feder eine Wendelfeder, Blattfeder, Schenkelfeder oder auch eine pneumatisches Kissen sein.In a further development it is provided that a bail arm is pivotable by means of a spring. In a variant, it is provided that the stator is adjustable by means of a spring. This spring, which is in particular biased, has the task to adjust the bracket and / or the stator in the direction of maximum delivery of the pump, that is, either maximum pressure or maximum negative pressure. This is necessary if in a fault, the pneumatic or hydraulic control of the hanger arms fails. The control of the strap by means of the mechanical spring ensures that the system is supplied with the required hydraulic or pneumatic pressure or with the pneumatic negative pressure. In this case, the spring may be a coil spring, leaf spring, leg spring or a pneumatic cushion.
Zur einfachen Ansteuerung der Bügelarme ist erfindungsgemäß vorgesehen, dass die freien Enden der Bügelarme Kolbenflächen für ein Druckmedium aufweisen. Über die Größe der Kolbenflächen kann die Verstellkraft bestimmt werden, so dass der anstehende Druck direkt auf die Kolbenflächen geleitet werden kann.For easy control of the hanger arms, the invention provides that the free ends of the hanger arms have piston surfaces for a pressure medium. About the size of the piston surfaces, the adjusting force can be determined so that the applied pressure can be passed directly to the piston surfaces.
In bevorzugter Weise sind die Kolbenflächen in im Gehäuse der Flügelzellenpumpe vorgesehenen Führungen verschieblich gelagert. Diese Führungen dienen zum einen zum Abdichten der Kolben gegenüber dem Gehäuse, zum anderen zur exakten Führung und Lagerung der freien Enden der Bügelarme.Preferably, the piston surfaces are slidably mounted in provided in the housing of the vane pump guides. These guides serve on the one hand for sealing the piston relative to the housing, on the other hand for the exact guidance and storage of the free ends of the hanger arms.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den Unteransprüchen sowie der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung zwei bevorzugte Ausführungsbeispiele im Einzelnen beschrieben sind. Dabei können die in der Zeichnung dargestellten sowie in den Ansprüchen und in der Beschreibung erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein.Further advantages, features and details of the invention will become apparent from the subclaims and the following description in which two preferred embodiments are described in detail with reference to the drawing. The features shown in the drawing and mentioned in the claims and in the description may each be essential to the invention individually or in any combination.
In der Zeichnung zeigen:In the drawing show:
Figur 1 einen Querschnitt durch eine Flügelzellenpumpe, teilweise aufgeschnitten;1 shows a cross section through a vane pump, partially cut away;
Figur 2 eine perspektivische Ansicht einerFigure 2 is a perspective view of a
Flügelzellenpumpe ohne Gehäuse gemäß einer ersten Ausführungsform; undVane pump without housing according to a first embodiment; and
Figur 3 eine perspektivische Ansicht einerFigure 3 is a perspective view of a
Flügelzellenpumpe ohne Gehäuse gemäß einer zweiten Ausführungsform.Vane pump without housing according to a second embodiment.
Zum besseren Verständnis der Erfindung wird auf dieFor a better understanding of the invention is based on the
DE 10 2005 048 602 Bezug genommen, deren Inhalt hiermit eingeführt wird, so dass er Bestandteil dieser Beschreibung ist. Die Figur 1 zeigt schematisch ein Gehäuse 10 einer insgesamt mit 12 bezeichneten Flügelzellenpumpe, in welcher eine Antriebswelle 14 drehbar gelagert ist. Diese Antriebswelle 14 treibt einen Innenrotor 16 an, welcher eine Vielzahl radialer Schlitze 18 aufweist, in welchen Flügel 20 radial verschieblich gelagert sind. Diese Flügel 20 besitzen ein verdicktes freies Ende 22, an welchem Gleitschuhe 24 schwenkbar befestigt sind. Diese Gleitschuhe 24 liegen an der Innenumfangsflache 26 eines Stators 28 an und bilden einen insgesamt mit 8 bezeichneten Außenrotor. Dabei bilden der Innenrotor 16, zwei Flügel 20, zwei Gleitschuhe 24 sowie der Stator 28 jeweils einen Arbeitsraum 30. Dies ist deutlich im aufgeschnittenen Abschnitt der Flügelzellenpumpe 12 in Figur 1 erkennbar. Der Arbeitsraum 30 vergrößert und verkleinert sich bei sich drehendem Innenrotor 16, wodurch ein Fluid gefördert wird.DE 10 2005 048 602, the content of which is hereby introduced, so that it forms part of this description. 1 shows schematically a housing 10 of a generally designated 12 vane pump, in which a drive shaft 14 is rotatably mounted. This drive shaft 14 drives an inner rotor 16, which has a plurality of radial slots 18, in which wings 20 are mounted radially displaceable. These wings 20 have a thickened free end 22 to which sliding blocks 24 are pivotally mounted. These sliding shoes 24 abut against the inner circumferential surface 26 of a stator 28 and form an outer rotor designated overall by 8. In this case, the inner rotor 16, two wings 20, two sliding shoes 24 and the stator 28 each have a working space 30. This is clearly visible in the cut-open section of the vane pump 12 in FIG. The working space 30 increases and decreases with rotating inner rotor 16, whereby a fluid is conveyed.
Außerdem ist in der Figur 1 erkennbar, dass in einem gehäusefesten Schwenklager 32 ein gabelförmiger Bügel 34 schwenkbar gelagert ist, wobei der Bügel 34 zwei Bügelarme 36 und 38 aufweist, die zumindest abschnittsweise am Stator 28 anliegen und diesen umgreifen. Dies ist auch deutlich aus den Figuren 2 und 3 ersichtlich. Die freien Enden 40 und 42 der Bügelarme 36 und 38 weisen Kolbenflächen 44 auf, an welchen ein in den Druckräumen 46 und 48 herrschendes Fluid angreift. Die Bügelarme 36 und 38 sind in Führungen 50 geführt, über welche diese fluiddicht abgedichtet sind und wobei die Führungen 50 Zylinderflächen darstellen.In addition, it can be seen in the figure 1 that in a housing-fixed pivot bearing 32, a fork-shaped bracket 34 is pivotally mounted, wherein the bracket 34 has two hanger arms 36 and 38 which abut at least partially on the stator 28 and embrace this. This is also clear from Figures 2 and 3 can be seen. The free ends 40 and 42 of the yoke arms 36 and 38 have piston surfaces 44, which acts on a prevailing in the pressure chambers 46 and 48 fluid. The bail arms 36 and 38 are guided in guides 50, via which they are sealed fluid-tight and wherein the guides 50 represent cylindrical surfaces.
Greift zum Beispiel an der Kolbenfläche 44 des freien Endes 40 des Bügelarms 36 ein Druck an, dann wird der Bügelarm 36 und somit der gesamte Bügel 34 in Richtung des Pfeils 52 um die Schwenkachse des Schwenklagers 32 verschwenkt, wodurch der Stator 28 in Richtung des Pfeils 52 mitgenommen wird. In der in der Figur 1 dargestellten Lage weist der Stator 28 eine Achse 54 auf, die bezüglich der Achse 56 der Antriebswelle 40 einen Versatz 60 aufweist. Durch die Verlagerung des Stators 28 in Richtung des Pfeils 52 wird dieser Versatz 60 verkleinert und dadurch die Exzentrizität des Innenrotors 16 zum Stator 28 oder Außenrotors 8 vermindert, wodurch das Arbeitsvolumen der Flügelzellenpumpe 12 verringert wird.For example, if a pressure acts on the piston surface 44 of the free end 40 of the bail arm 36, then the bail arm 36 and thus the entire bail 34 is pivoted in the direction of the arrow 52 about the pivot axis of the pivot bearing 32, whereby the stator 28 in the direction of the arrow 52 is taken. In the position shown in FIG. 1, the stator 28 has an axis 54 which has an offset 60 with respect to the axis 56 of the drive shaft 40. By the Displacement of the stator 28 in the direction of the arrow 52, this offset 60 is reduced, thereby reducing the eccentricity of the inner rotor 16 to the stator 28 or outer rotor 8, whereby the working volume of the vane pump 12 is reduced.
Eine Vergrößerung des Arbeitsvolumens wird dadurch erreicht, dass der Bügel 34 entgegen der Richtung des Pfeils 52 verschwenkt wird, indem ein Druck an der Kolbenfläche 44 des Endes 42 des Bügelarms 38 angreift. Am Bügel 34 wirkt daher die resultierende Kraft der an den Kolbenflächen 44 herrschenden Drücke.An increase in the working volume is achieved in that the bracket 34 is pivoted against the direction of the arrow 52 by a pressure on the piston surface 44 of the end 42 of the bail arm 38 engages. On the bracket 34, therefore, the resultant force acts on the piston surfaces 44 prevailing pressures.
Bei der in der Figur 3 gezeigten Ausführungsform greift an der Unterseite des Stators 28 in geeigneter Weise eine mechanische Feder 58, insbesondere eine Wendelfeder, an, die den Stator 28 entgegen der Richtung des Pfeils 52 zu verschieben versucht. Diese Verschieberichtung wirkt in Richtung der Maximalförderung der Flügelzellenpumpe 12.In the embodiment shown in FIG. 3, a mechanical spring 58, in particular a helical spring, which tries to displace the stator 28 against the direction of the arrow 52, engages on the underside of the stator 28 in a suitable manner. This displacement direction acts in the direction of maximum delivery of the vane pump 12.
Sollte in einem Störfall weder an der Kolbenfläche 44 des Bügelarms 36 noch an der Kolbenfläche 44 des Bügelarms 38 ein Druck anliegen, dann wird der Stator 28 auf jeden Fall in Richtung Maximalförderung verlagert, wodurch sichergestellt wird, dass die Flügelzellenpumpe 12 das zu fördernde Fluid oder eine Unterdruck in ausreichendem Maße zur Verfügung stellt. Diese Feder 58 dient lediglich zur Einstellung der Flügelzellenpumpe 12 für den Störfall. Die reguläre Rückführung des Stators 28 in Richtung der Maximalförderung erfolgt durch Anlegen eines Drucks an die Kolbenfläche 44 des Bügelarms 38 oder durch Verringerung des Drucks an der Kolbenfläche 44 des Bügelarms 36. Should be in an accident neither on the piston surface 44 of the bail arm 36 still on the piston surface 44 of the bail arm 38 apply pressure, then the stator 28 is displaced in any case in the direction of maximum promotion, thereby ensuring that the vane pump 12, the fluid to be pumped or a negative pressure sufficiently provides. This spring 58 is only used to adjust the vane pump 12 for the accident. The regular return of the stator 28 in the direction of the maximum delivery takes place by applying a pressure to the piston surface 44 of the bail arm 38 or by reducing the pressure on the piston surface 44 of the bail arm 36.

Claims

Patentansprüche claims
1. Flügel zellenpumpe (12) mit einem Außenrotor (8), einem Innenrotor (16) und einer Vielzahl von Flügeln (20), die in im Wesentlichen radialen Schlitzen (18) im Innenrotor (16) radial verschieblich gelagert und am Außenrotor (8) schwenkbar befestigt sind und der Außenrotor (8) an der Innenumfangsfläche (26) eines Stators (28) entlang gleitet, wobei die Achse (54) des Stators (28) und die Achse (56) des Innenrotors (16) einen Versatz (60) zueinander aufweisen und der Stator (28) bezüglich des Innenrotors (16) in radialer Richtung verstellbar und dadurch der Versatz (60) veränderbar ist, und der Stator1. vane cell pump (12) with an outer rotor (8), an inner rotor (16) and a plurality of vanes (20) radially slidably mounted in substantially radial slots (18) in the inner rotor (16) and on the outer rotor (8 ) are pivotally mounted and the outer rotor (8) slides along the inner peripheral surface (26) of a stator (28), the axis (54) of the stator (28) and the axis (56) of the inner rotor (16) having an offset (60 ) and the stator (28) with respect to the inner rotor (16) in the radial direction adjustable and thereby the offset (60) is variable, and the stator
(28) von einem im Gehäuse (10) der Flügelzellenpumpe (12) in einem Schwenklager (32) gelagerten Bügel (34) teilweise umgriffen ist, dadurch gekennzeichnet, dass der Bügel (34) beidseits des Schwenklagers (32) abragende Bügelarme (36 und 38) aufweist, und die Bügelarme (36 und 38) den Stator (28) jeweils teilweise umgreifen .(28) of a in the housing (10) of the vane pump (12) in a pivot bearing (32) mounted bracket (34) is partially embraced, characterized in that the bracket (34) on both sides of the pivot bearing (32) projecting bracket arms (36 and 38), and the bail arms (36 and 38) each partially surround the stator (28).
2. Flügelzellenpumpe nach Anspruch 1, dadurch gekennzeichnet, dass der Bügel (34) mit seinen Bügelarmen (36 und 38) gabelförmig ausgebildet ist.2. vane pump according to claim 1, characterized in that the bracket (34) with its bow arms (36 and 38) is fork-shaped.
3. Flügelzellenpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass beide Bügelarme (36 und 38) hydraulisch oder pneumatisch verschwenkbar sind.3. vane pump according to claim 1 or 2, characterized in that both hanger arms (36 and 38) are hydraulically or pneumatically pivotable.
4. Flügelzellenpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Bügelarm mittels einer Feder (58) verschiebbar ist.4. vane pump according to one of the preceding claims, characterized in that a bail arm by means of a spring (58) is displaceable.
5. Flügelzellenpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Stator (28) mittels einer Feder (58) verstellbar ist. 5. vane pump according to one of the preceding claims, characterized in that the stator (28) by means of a spring (58) is adjustable.
6. Flügelzellenpumpe nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Feder (58) vorgespannt ist.6. vane pump according to claim 4 or 5, characterized in that the spring (58) is biased.
7. Flügelzellenpumpe nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass der Bügelarm und/oder der Stator (28) mittels der Feder (58) in Richtung Maximalförderung der Flügelzellenpumpe (12) verstellbar ist.7. vane pump according to one of claims 4 to 6, characterized in that the bail arm and / or the stator (28) by means of the spring (58) in the direction of maximum promotion of the vane pump (12) is adjustable.
8. Flügelzellenpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die freien Enden8. vane pump according to one of the preceding claims, characterized in that the free ends
(40 und 42) der Bügelarme (36 und 38) Kolbenflächen (44) für ein Druckmedium aufweisen.(40 and 42) of the hanger arms (36 and 38) have piston surfaces (44) for a pressure medium.
9. Flügelzellenpumpe nach Anspruch 8, dadurch gekennzeichnet, dass die Kolbenflächen (44) in im Gehäuse (10) der Flügelzellenpumpe (12) vorgesehenen Führungen (50) verschieblich gelagert sind. 9. vane pump according to claim 8, characterized in that the piston surfaces (44) in the housing (10) of the vane pump (12) provided guides (50) are displaceably mounted.
EP06776762A 2005-10-06 2006-08-11 Vane cell pump Expired - Fee Related EP1934478B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200510048602 DE102005048602B4 (en) 2005-10-06 2005-10-06 Vane machine, in particular vane pump
DE102006021251A DE102006021251B4 (en) 2005-10-06 2006-04-28 Vane pump
PCT/EP2006/007943 WO2007039012A1 (en) 2005-10-06 2006-08-11 Vane cell pump

Publications (2)

Publication Number Publication Date
EP1934478A1 true EP1934478A1 (en) 2008-06-25
EP1934478B1 EP1934478B1 (en) 2009-01-28

Family

ID=37398813

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EP06776762A Expired - Fee Related EP1934478B1 (en) 2005-10-06 2006-08-11 Vane cell pump

Country Status (6)

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US (1) US8210836B2 (en)
EP (1) EP1934478B1 (en)
JP (1) JP4795437B2 (en)
KR (1) KR101131290B1 (en)
DE (1) DE502006002760D1 (en)
WO (1) WO2007039012A1 (en)

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Also Published As

Publication number Publication date
US20070292291A1 (en) 2007-12-20
EP1934478B1 (en) 2009-01-28
US8210836B2 (en) 2012-07-03
KR20080049690A (en) 2008-06-04
JP4795437B2 (en) 2011-10-19
DE502006002760D1 (en) 2009-03-19
WO2007039012A1 (en) 2007-04-12
JP2009510330A (en) 2009-03-12
KR101131290B1 (en) 2012-03-30

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