EP2337928B1 - Pump, particularly vane-type pump - Google Patents

Pump, particularly vane-type pump Download PDF

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Publication number
EP2337928B1
EP2337928B1 EP09744036A EP09744036A EP2337928B1 EP 2337928 B1 EP2337928 B1 EP 2337928B1 EP 09744036 A EP09744036 A EP 09744036A EP 09744036 A EP09744036 A EP 09744036A EP 2337928 B1 EP2337928 B1 EP 2337928B1
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EP
European Patent Office
Prior art keywords
pressure
pump
hole
pump according
plane
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Application number
EP09744036A
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German (de)
French (fr)
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EP2337928A2 (en
Inventor
Thomas Dippel
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ixetic Bad Homburg GmbH
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ixetic Bad Homburg GmbH
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Publication of EP2337928A2 publication Critical patent/EP2337928A2/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0854—Vane tracking; control therefor by fluid means
    • F01C21/0863—Vane tracking; control therefor by fluid means the fluid being the working fluid
    • 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
    • F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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

Definitions

  • the invention relates to a pump, in particular a vane pump, having a rotor leading at least one vane, which rests against at least one pressure plate, which has at least one pressure passage hole and at least one lower vane through hole in communication with a pressure outlet in a housing of the pump or is provided in a transmission housing.
  • German patent application DE 196 31 846 A1 is a vane pump with a leading from a pressure side to a consumer first fluid path and at least one hydraulic resistance element, which is arranged in a pressure ranges connecting second fluid path.
  • the hydraulic resistance element is designed as a cold start plate, by which the pressure areas of the pump sections are separable from each other.
  • the Japanese patent application JP 61078981 shows a vane pump in which the Untererielnut is interrupted.
  • the object of the invention is a pump, in particular a vane pump, with a rotor carrying at least one vane, which bears against at least one pressure plate, which has at least one pressure passage hole and at least one lower vane through hole, which are in communication with a pressure outlet in a housing the pump is provided, which has a high efficiency and / or improved cold start behavior.
  • the object is in a pump, in particular a vane pump, with a rotor having at least one vane, which abuts at least one pressure plate having at least one pressure passage hole and at least one lower vane through hole, which communicate with a pressure outlet in a housing of the pump is provided, wherein between the pressure plate and the housing, a flow guide is arranged, which limits a fluid path, which leads from the at least one pressure passage hole first via a channel section or channel to the at least one lower wing through-hole and then via a channel section or openings to the pressure outlet, achieved in that the flow guide is designed as a plate spring, which is clamped between the pressure plate and the housing.
  • the pressure passage hole is preferably designed as Druckniere and communicates with a pressure chamber in the interior of the pump.
  • the underwing through-hole is preferably designed as a submarine in-flight and serves to ensure an under wing supply of the wing or the wing of the pump.
  • a working medium in particular a hydraulic medium, such as oil, is selectively guided or guided from the pressure through-hole to the under-wing through-hole, and only then to the pressure outlet of the pump.
  • a preferred embodiment of the pump is characterized in that the pressure plate has a first plane with the pressure passage hole and the underwing passage hole and a second plane with at least one flow passage partially defining the fluid path from the pressure passage hole at the underwing passage hole to the pressure exit.
  • the pressure plate in the first plane preferably comprises two pressure-passage holes and two under-wing through-holes which are interconnected by two flow channels in the second plane.
  • a further preferred embodiment of the pump is characterized in that the flow channel in the second plane of the pressure plate is limited in the axial direction to the housing by the flow guide.
  • the term axial refers to the axis of rotation of the rotor. Axial means in the direction or parallel to the axis of rotation of the rotor.
  • the flow channel is bounded in the axial direction by the pressure plate and the flow guide. In the radial direction, the flow channel is preferably delimited by the pressure plate.
  • a further preferred embodiment of the pump is characterized in that the pressure plate in the second plane has webs, which two flow channels from each other separate.
  • the webs preferably extend in the radial direction.
  • the flow channels preferably each delimit a fluid path from a pressure passage hole at an underfloor passage hole to the pressure exit.
  • a further preferred embodiment of the pump is characterized in that the pressure plate in the second plane radially inner has an inner ring body on which the flow guide partially abuts.
  • the inner ring body is preferably arranged coaxially with the axis of rotation of the rotor.
  • a further preferred embodiment of the pump is characterized in that the pressure plate has in a third plane radially inward another inner ring body, which surrounds the flow guide and on which a seal is applied.
  • the two inner ring bodies are preferably integrally connected to each other by a shoulder and arranged coaxially with each other.
  • a further preferred embodiment of the pump is characterized in that the pressure plate in the second plane radially outward has an outer ring body, on which the flow guide partially abuts.
  • the outer ring body is preferably arranged coaxially to the axis of rotation of the rotor.
  • the outer ring body is preferably connected in one piece with the inner ring body by the webs.
  • a further preferred embodiment of the pump is characterized in that the pressure plate in one or the third plane radially outward has a further outer ring body which surrounds the flow guide and preferably serves only for centering.
  • the two outer ring bodies are preferably integrally connected to each other by a shoulder and arranged coaxially with each other.
  • a further preferred embodiment of the pump is characterized in that on the housing, a contact area is formed, which rests against or on which the flow guide.
  • the contact region is preferably designed as an annular bead, but may also comprise a plurality of projections, which are preferably uniformly distributed in the circumferential direction.
  • a further preferred embodiment of the pump is characterized in that the flow guide is designed as a plate spring between the pressure plate and is clamped in the housing.
  • the plate spring is preferably clamped so that the pressure plate is pressed against a contour ring. About the height of the biasing force, the contact pressure can be adjusted.
  • the disc spring is slotted radially outward and / or radially outwardly flattened and / or has at least one through hole.
  • the slots and / or flats and / or through holes are preferably arranged in the region of the pressure outlet in order to ensure the passage of the pressurized working medium.
  • a further preferred exemplary embodiment of the pump is characterized in that the flow channel has a constriction in the region of an underflat groove or underflat kidney. As a result, the flow of Unterfluginut or kidney is improved.
  • FIG. 1 a vane pump 1 is shown greatly simplified in different views.
  • the pump 1 includes a only in FIG. 1 shown housing 2 with a contour ring 4, within which a rotor 5 is rotatably driven with wings 6.
  • the wings 6 are preferably guided in the radial direction in the rotor 5 slidably.
  • the contour ring 4 or cam ring 4 has a stroke contour, which is formed so that at least one, preferably two substantially crescent-shaped delivery chambers are formed. These are traversed by the wings 6, wherein two pump sections are realized, each with a suction and a pressure range.
  • the rotor 5 and the contour ring 4 with the stroke contour lie in FIG. 1 below, sealingly on a (not shown) sealing surface of the housing 2 at.
  • a pressure plate 10 is provided, through which the pumped by the vane pump 1 fluid is conveyed from the pressure side of the pump to a pressure outlet 8, which is in communication with a consumer.
  • pressure plate 10 is divided according to an essential aspect of the invention in three levels 11, 12, 13 or areas.
  • a pressure through hole 16 is recessed, which is in communication with the pressure area within the contour ring 4 and is also referred to as Druckniere because of its kidney-shaped shape.
  • the pressure passage hole 16 opens on the side facing away from the rotor 5 in a channel portion 18 which is formed in the second plane 12 of the pressure plate 10.
  • an underwing through-hole 19 which, because of its kidney-shaped shape, is also referred to as an under-wing kidney.
  • the underwing passage hole 19 opens on its side facing the rotor 5 in an underfed supply area, which is provided at the radially inner end of the wings 6.
  • the underfloor supply region is supplied with pressurized working medium, in particular hydraulic oil, via the underfloor through-hole 19 in order to assist in the extension of the vanes in the radial direction.
  • the underwing passage hole 19 opens on its side facing away from the rotor 5 in a channel portion 20 which defines together with the channel portion 18, a channel or fluid path, which is indicated by arrows 21, 22 and from the pressure through hole 16 to the lower wing through hole 19 over to an opening 24 extends, which is released in the third plane 13 of the pressure plate 10 by a flow guide 25.
  • the flow guide 25 is designed to be similar to an in FIG. 4
  • the flow guide 70 is designed as a plate spring and comprises a central through hole 71. Radially outward, the plate spring 70 has two flats 72, 73, which in the installed state of the plate spring 70 is a in FIG. 2 create opening designated 24, which allows the passage of pressurized working fluid to the pressure outlet 8 of the pump 1.
  • the flow guide 25 rests with its radially inner edge region on an inner ring body 26 which is formed in the second plane 12 of the pressure plate 10. Between the radially inner edge region of the flow guide 25 and the pressure plate 10, a seal 33 is arranged.
  • the inner ring body 26 is connected by a shoulder to a further inner ring body 27, which extends in the third plane 13 of the pressure plate 10.
  • the flow guide 25 rests with its outer edge region on an outer ring body 28, which extends in the second plane 12 coaxial with the inner ring body 26 and the further inner ring body 27.
  • the outer ring body 28 is connected by a further shoulder with a further outer ring body 29 which extends in the third plane 13 of the pressure plate 10.
  • the flow guide 25 is arranged in the third plane 13 of the pressure plate 10 in an annular space which extends between the further inner ring body 27 and the further outer ring body 29 in the third plane 13 of the pressure plate 10.
  • the flow guide 25 is acted upon in the vicinity of its radially inner edge region by a ring-bead-like contact region 30, which is formed on the housing 2.
  • the two channel sections 18 and 20 together form a channel which is separated by webs 31, 32 from a further channel 34.
  • the webs 31, 32 extend in the second plane of the pressure plate 10 of the inner ring body 26 in the radial direction to the outer ring body 28.
  • By the webs 31, 32 of the inner ring body 26 is integrally connected to the outer ring body 28.
  • the channel 34 connects another lower wing through-hole 36 with a further pressure passage hole 35.
  • a flattening 37 on the flow guide 25 a further opening 38 to the pressure outlet 8 of the pump 1 is provided.
  • By arrows 41, 42 is in FIG. 2 indicated a further fluid path, passes through the pressurized working fluid from the further pressure passage hole 36 at the further under-wing passage hole 35 over to the further opening 38.
  • the flow guide 25 By the flow guide 25 according to the invention, the oil guide from the pressure passage holes 16; Optimized 35 at the lower wing through holes 19, 36 over to the pressure outlet 8 of the pump 1. As a result, the cold start behavior of the pump 1 can be significantly improved.
  • the working medium emerging from the pressure passage holes 35, 16 passes via the associated lower-wing through-hole 36, 19 first into the undererielmakerss Scheme and only then to the pressure outlet 8 of the pump 1.
  • the associated channels 18, 20 and 34 are on the rotor 5 side facing away from the pressure plate 10th bounded by the flow guide 25. This is particularly useful when a particular housing design no limitation of the channel or the channels in the housing permits. In the present example, two halves of the pump are separated from one another by the webs 31, 32. In addition, by the webs 31, 32, a desired flow direction can be specified.
  • the openings 24, 38 provided by the flow guide 25 are preferably arranged downstream of the respective lower-wing through-holes 19, 36.
  • FIGS. 3 to 5 are various embodiments of Strömungsleit wornen in the form of disc springs 50; 70; 80 each shown in the plan view and the front view.
  • the illustrated disc springs 50; 70; 80 may instead of the flow guide 25, which is also designed as a plate spring, are installed in the pump 1, which in the Figures 1 and 2 is shown.
  • plate spring 50 includes a plurality of tongues 51 to 56, which extend substantially in the radial direction, so that the plate spring is thus slotted outside. Radially inside, the plate spring 50 has a central through hole 58.
  • the tongues 53, 54 and 55, 56 circumferentially bounded recesses 63, 64 and 65, 66, each of which create an opening in FIG. 2 is denoted by 24, 38 and by the flats 37, 39 of the plate spring 25 is provided. Further recesses 62 and 61 between the tongues 53, 54 and 55, 56 serve to optimize the deformation of the diaphragm spring, and allow a more uniform distribution of stress.
  • disc spring 70 comprises in the region of their flats 72, 73 each have a nose 74, 75.
  • the two lugs 74, 75 are arranged in opposite directions so that they allow a rotationally secure installation of the plate spring 70.
  • the twist-proof installation has the advantage that the flats 72, 73 are correctly positioned during installation and remain so.
  • the preferred flow direction in the channels 18, 20 and 34 is preferably in the same direction as the direction of rotation of the rotor 5.
  • the channels 18, 20, and 34 may be fluidly optimized, for example, to the underfloor vias 19; 36 be narrowed down.
  • the channels 18, 20 and 34 can be formed so that either the pressure kidney and the under wing kidney are connected to the same pump half or from opposite pump halves.
  • the design and position of the disc springs 25; 50; 70; 80 are preferably chosen so that the channels 18, 20 and 34 in front of and behind the plate spring allow the same passage cross-section. From the openings 24, 38, the medium in the third plane 13 flows to the pressure outlet 8.
  • plate spring 80 has the shape of a circular disk with a central through hole 85.

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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)

Description

Die Erfindung betrifft eine Pumpe, insbesondere eine Flügelzellenpumpe, mit einem mindestens einen Flügel führenden Rotor, der an mindestens einer Druckplatte anliegt, die mindestens ein Druckdurchgangsloch und mindestens ein Unterflügeldurchgangsloch aufweist, die mit einem Druckausgang in Verbindung stehen, der in einem Gehäuse der Pumpe oder in einem Getriebegehäuse vorgesehen ist.The invention relates to a pump, in particular a vane pump, having a rotor leading at least one vane, which rests against at least one pressure plate, which has at least one pressure passage hole and at least one lower vane through hole in communication with a pressure outlet in a housing of the pump or is provided in a transmission housing.

Aus der deutschen Offenlegungsschrift DE 196 31 846 A1 ist eine Flügelzellenpumpe mit einem von einer Druckseite zu einem Verbraucher führenden ersten Fluidpfad und mit mindestens einem hydraulischen Widerstandselement bekannt, das in einem Druckbereiche verbindenden zweiten Fluidpfad angeordnet ist. Das hydraulische Widerstandselement ist als Kaltstartplatte ausgebildet, durch das die Druckbereiche der Pumpenabschnitte voneinander trennbar sind.From the German patent application DE 196 31 846 A1 is a vane pump with a leading from a pressure side to a consumer first fluid path and at least one hydraulic resistance element, which is arranged in a pressure ranges connecting second fluid path. The hydraulic resistance element is designed as a cold start plate, by which the pressure areas of the pump sections are separable from each other.

Die japanische Offenlegungsschrift JP 61078981 zeigt eine Flügelzellenpumpe, bei welcher die Unterflügelnut unterbrochen ist.The Japanese patent application JP 61078981 shows a vane pump in which the Unterflügelnut is interrupted.

In der Offenlegungsschrift DE 152 8 934 ist eine Flügelzellenpumpe dargestellt, bei welcher die Flügel durch entsprechende Federvorrichtungen an die Hubkontur angepresst werden.In the published patent application DE 152 8 934 a vane pump is shown in which the wings are pressed by appropriate spring devices to the stroke contour.

Aufgabe der Erfindung ist es, eine Pumpe, insbesondere eine Flügelzellenpumpe, mit einem mindestens einen Flügel führenden Rotor, der an mindestens einer Druckplatte anliegt, die mindestens ein Druckdurchgangsloch und mindestens ein Unterflügeldurchgangsloch aufweist, die mit einem Druckausgang in Verbindung stehen, der in einem Gehäuse der Pumpe vorgesehen ist, zu schaffen, die einen hohen Wirkungsgrad und/oder ein verbessertes Kaltstartverhalten aufweist.The object of the invention is a pump, in particular a vane pump, with a rotor carrying at least one vane, which bears against at least one pressure plate, which has at least one pressure passage hole and at least one lower vane through hole, which are in communication with a pressure outlet in a housing the pump is provided, which has a high efficiency and / or improved cold start behavior.

Die Aufgabe ist bei einer Pumpe, insbesondere einer Flügelzellenpumpe, mit einem mindestens einen Flügel führenden Rotor, der an mindestens einer Druckplatte anliegt, die mindestens ein Druckdurchgangsloch und mindestens ein Unterflügeldurchgangsloch aufweist, die mit einem Druckausgang in Verbindung stehen, der in einem Gehäuse der Pumpe vorgesehen ist, wobei zwischen der Druckplatte und dem Gehäuse eine Strömungsleiteinrichtung angeordnet ist, die einen Fluidpfad begrenzt, welcher von dem mindestens einen Druckdurchgangsloch zunächst über einen Kanalabschnitt bzw. Kanal zu dem mindestens einen Unterflügeldurchgangsloch und danach über einen Kanalabschnitt bzw. Kanal und Öffnungen zu dem Druckausgang führt,
dadurch gelöst, dass die Strömungsleiteinrichtung als Tellerfeder ausgeführt ist, die zwischen der Druckplatte und dem Gehäuse eingespannt ist.The object is in a pump, in particular a vane pump, with a rotor having at least one vane, which abuts at least one pressure plate having at least one pressure passage hole and at least one lower vane through hole, which communicate with a pressure outlet in a housing of the pump is provided, wherein between the pressure plate and the housing, a flow guide is arranged, which limits a fluid path, which leads from the at least one pressure passage hole first via a channel section or channel to the at least one lower wing through-hole and then via a channel section or openings to the pressure outlet,
achieved in that the flow guide is designed as a plate spring, which is clamped between the pressure plate and the housing.

Das Druckdurchgangsloch ist vorzugsweise als Druckniere ausgeführt und steht mit einem Druckraum im Inneren der Pumpe in Verbindung. Das Unterflügeldurchgangsloch ist vorzugsweise als Unterflügeiniere ausgeführt und dient dazu, eine Unterflügelversorgung des Flügels beziehungsweise der Flügel der Pumpe sicherzustellen. Durch die erfindungsgemäße Strömungsleiteinrichtung wird gezielt ein Arbeitsmedium, insbesondere ein Hydraulikmedium, wie Öl, von dem Druckdurchgangsloch zunächst zu dem Unterflügeldurchgangsloch geleitet beziehungsweise geführt, und erst dann zum Druckausgang der Pumpe. Dadurch kann das Kaltstartverhalten der Pumpe ohne die Nachteile einer Kaltstartplatte verbessert werden, deren Verwendung eine zusätzliche Druckdifferenz und damit eine erhöhte Leistungsaufnahme zur Folge hat.The pressure passage hole is preferably designed as Druckniere and communicates with a pressure chamber in the interior of the pump. The underwing through-hole is preferably designed as a submarine in-flight and serves to ensure an under wing supply of the wing or the wing of the pump. By means of the flow-guiding device according to the invention, a working medium, in particular a hydraulic medium, such as oil, is selectively guided or guided from the pressure through-hole to the under-wing through-hole, and only then to the pressure outlet of the pump. Thereby, the cold start behavior of the pump can be improved without the disadvantages of a cold start plate, the use of which results in an additional pressure difference and thus an increased power consumption.

Ein bevorzugtes Ausführungsbeispiel der Pumpe ist dadurch gekennzeichnet, dass die Druckplatte eine erste Ebene mit dem Druckdurchgangsloch und dem Unterflügeldurchgangsloch und eine zweite Ebene mit mindestens einem Strömungskanal aufweist, der den Fluidpfad von dem Druckdurchgangsloch an dem Unterflügeldurchgangsloch vorbei zu dem Druckausgang teilweise begrenzt. Die Druckplatte umfasst in der ersten Ebene vorzugsweise zwei Druckdurchgangslöcher und zwei Unterflügeldurchgangslöcher, die durch zwei Strömungskanäle in der zweiten Ebene miteinander verbunden sind.A preferred embodiment of the pump is characterized in that the pressure plate has a first plane with the pressure passage hole and the underwing passage hole and a second plane with at least one flow passage partially defining the fluid path from the pressure passage hole at the underwing passage hole to the pressure exit. The pressure plate in the first plane preferably comprises two pressure-passage holes and two under-wing through-holes which are interconnected by two flow channels in the second plane.

Ein weiteres bevorzugtes Ausführungsbeispiel der Pumpe ist dadurch gekennzeichnet, dass der Strömungskanal in der zweiten Ebene der Druckplatte in axialer Richtung zum Gehäuse hin von der Strömungsleiteinrichtung begrenzt ist. Der Begriff axial bezieht sich auf die Drehachse des Rotors. Axial bedeutet in Richtung oder parallel zur Drehachse des Rotors. Der Strömungskanal wird in axialer Richtung von der Druckplatte und der Strömungsleiteinrichtung begrenzt. In radialer Richtung wird der Strömungskanal vorzugsweise von der Druckplatte begrenzt.A further preferred embodiment of the pump is characterized in that the flow channel in the second plane of the pressure plate is limited in the axial direction to the housing by the flow guide. The term axial refers to the axis of rotation of the rotor. Axial means in the direction or parallel to the axis of rotation of the rotor. The flow channel is bounded in the axial direction by the pressure plate and the flow guide. In the radial direction, the flow channel is preferably delimited by the pressure plate.

Ein weiteres bevorzugtes Ausführungsbeispiel der Pumpe ist dadurch gekennzeichnet, dass die Druckplatte in der zweiten Ebene Stege aufweist, welche zwei Strömungskanäle voneinander trennen. Die Stege erstrecken sich vorzugsweise in radialer Richtung. Die Strömungskanäle begrenzen vorzugsweise jeweils einen Fluidpfad von einem Druckdurchgangsloch an einem Unterflügeldurchgangsloch vorbei zu dem Druckausgang.A further preferred embodiment of the pump is characterized in that the pressure plate in the second plane has webs, which two flow channels from each other separate. The webs preferably extend in the radial direction. The flow channels preferably each delimit a fluid path from a pressure passage hole at an underfloor passage hole to the pressure exit.

Ein weiteres bevorzugtes Ausführungsbeispiel der Pumpe ist dadurch gekennzeichnet, dass die Druckplatte in der zweiten Ebene radial innen einen Innenringkörper aufweist, an dem die Strömungsleiteinrichtung teilweise anliegt. Der Innenringkörper ist vorzugsweise koaxial zur Drehachse des Rotors angeordnet.A further preferred embodiment of the pump is characterized in that the pressure plate in the second plane radially inner has an inner ring body on which the flow guide partially abuts. The inner ring body is preferably arranged coaxially with the axis of rotation of the rotor.

Ein weiteres bevorzugtes Ausführungsbeispiel der Pumpe ist dadurch gekennzeichnet, dass die Druckplatte in einer dritten Ebene radial innen einen weiteren Innenringkörper aufweist, den die Strömungsleiteinrichtung umgibt und an dem eine Dichtung anliegt. Die beiden Innenringkörper sind vorzugsweise durch einen Absatz einstückig miteinander verbunden und koaxial zueinander angeordnet.A further preferred embodiment of the pump is characterized in that the pressure plate has in a third plane radially inward another inner ring body, which surrounds the flow guide and on which a seal is applied. The two inner ring bodies are preferably integrally connected to each other by a shoulder and arranged coaxially with each other.

Ein weiteres bevorzugtes Ausführungsbeispiel der Pumpe ist dadurch gekennzeichnet, dass die Druckplatte in der zweiten Ebene radial außen einen Außenringkörper aufweist, an dem die Strömungsleiteinrichtung teilweise anliegt. Der Außenringkörper ist vorzugsweise koaxial zur Drehachse des Rotors angeordnet. Der Außenringkörper ist durch die Stege vorzugsweise einstückig mit dem Innenringkörper verbunden.A further preferred embodiment of the pump is characterized in that the pressure plate in the second plane radially outward has an outer ring body, on which the flow guide partially abuts. The outer ring body is preferably arranged coaxially to the axis of rotation of the rotor. The outer ring body is preferably connected in one piece with the inner ring body by the webs.

Ein weiteres bevorzugtes Ausführungsbeispiel der Pumpe ist dadurch gekennzeichnet, dass die Druckplatte in einer beziehungsweise der dritten Ebene radial außen einen weiteren Außenringkörper aufweist, der die Strömungsleiteinrichtung umgibt und vorzugsweise nur zur Zentrierung dient. Die beiden Außenringkörper sind vorzugsweise durch einen Absatz einstückig miteinander verbunden und koaxial zueinander angeordnet.A further preferred embodiment of the pump is characterized in that the pressure plate in one or the third plane radially outward has a further outer ring body which surrounds the flow guide and preferably serves only for centering. The two outer ring bodies are preferably integrally connected to each other by a shoulder and arranged coaxially with each other.

Ein weiteres bevorzugtes Ausführungsbeispiel der Pumpe ist dadurch gekennzeichnet, dass an dem Gehäuse ein Anlagebereich ausgebildet ist, der an der beziehungsweise an dem die Strömungsleiteinrichtung anliegt. Der Anlagebereich ist vorzugsweise als Ringwulst ausgeführt, kann aber auch mehrere Vorsprünge umfassen, die in Umfangsrichtung vorzugsweise gleichmäßig verteilt sind.A further preferred embodiment of the pump is characterized in that on the housing, a contact area is formed, which rests against or on which the flow guide. The contact region is preferably designed as an annular bead, but may also comprise a plurality of projections, which are preferably uniformly distributed in the circumferential direction.

Ein weiteres bevorzugtes Ausführungsbeispiel der Pumpe ist dadurch gekennzeichnet, dass die Strömungsleiteinrichtung als Tellerfeder ausgeführt ist, die zwischen der Druckplatte und dem Gehäuse eingespannt ist. Die Tellerfeder ist vorzugsweise so eingespannt, dass die Druckplatte gegen einen Konturring gepresst wird. Über die Höhe der Vorspannkraft kann die Anpresskraft eingestellt werden.A further preferred embodiment of the pump is characterized in that the flow guide is designed as a plate spring between the pressure plate and is clamped in the housing. The plate spring is preferably clamped so that the pressure plate is pressed against a contour ring. About the height of the biasing force, the contact pressure can be adjusted.

Weitere bevorzugte Ausführungsbeispiele der Pumpe sind dadurch gekennzeichnet, dass die Tellerfeder radial außen geschlitzt ist und/oder radial außen abgeflacht ist und/oder mindestens ein Durchgangsloch aufweist. Dabei sind die Schlitze und/oder Abflachungen und/oder Durchgangslöcher vorzugsweise im Bereich des Druckausgangs angeordnet, um den Durchtritt des mit Druck beaufschlagten Arbeitsmediums sicherzustellen.Further preferred embodiments of the pump are characterized in that the disc spring is slotted radially outward and / or radially outwardly flattened and / or has at least one through hole. The slots and / or flats and / or through holes are preferably arranged in the region of the pressure outlet in order to ensure the passage of the pressurized working medium.

Ein weiteres bevorzugtes Ausführungsbeispiel der Pumpe ist dadurch gekennzeichnet, dass der Strömungskanal im Bereich einer Unterflügelnut oder Unterflügelniere eine Verengung aufweist. Dadurch wird die Anströmung der Unterflügeinut oder -niere verbessert.A further preferred exemplary embodiment of the pump is characterized in that the flow channel has a constriction in the region of an underflat groove or underflat kidney. As a result, the flow of Unterfluginut or kidney is improved.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung verschiedene Ausführungsbeispiele im Einzelnen beschrieben sind. Es zeigen:

Figur 1
eine Flügelzellenpumpe im Schnitt entlang einer Linie I-I in Figur 2;
Figur 2
die Flügelzellenpumpe aus Figur 1 in einem Querschnitt ohne Gehäuse und die
Figuren 3 bis 5
Tellerfedern gemäß verschiedenen Ausführungsbeispielen jeweils in der Draufsicht und in der Vorderansicht.
Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the drawings, various embodiments are described in detail. Show it:
FIG. 1
a vane pump in section along a line II in FIG. 2 ;
FIG. 2
off the vane pump FIG. 1 in a cross section without housing and the
FIGS. 3 to 5
Disc springs according to various embodiments in each case in plan view and in front view.

In den Figuren 1 und 2 ist eine Flügelzellenpumpe 1 stark vereinfacht in verschiedenen Ansichten dargestellt. Die Pumpe 1 umfasst ein nur in Figur 1 gezeigtes Gehäuse 2 mit einem Konturring 4, innerhalb dessen ein Rotor 5 mit Flügeln 6 drehbar angetrieben ist. Die Flügel 6 sind vorzugsweise in radialer Richtung in dem Rotor 5 verschiebbar geführt. Der Konturring 4 oder Hubring 4 hat eine Hubkontur, die so ausgebildet ist, dass mindestens ein, vorzugsweise zwei im Wesentlichen sichelförmige Förderräume ausgebildet werden. Diese werden von den Flügeln 6 durchlaufen, wobei zwei Pumpenabschnitte mit je einem Saug- und einem Druckbereich realisiert werden.In the Figures 1 and 2 a vane pump 1 is shown greatly simplified in different views. The pump 1 includes a only in FIG. 1 shown housing 2 with a contour ring 4, within which a rotor 5 is rotatably driven with wings 6. The wings 6 are preferably guided in the radial direction in the rotor 5 slidably. The contour ring 4 or cam ring 4 has a stroke contour, which is formed so that at least one, preferably two substantially crescent-shaped delivery chambers are formed. These are traversed by the wings 6, wherein two pump sections are realized, each with a suction and a pressure range.

Der Rotor 5 und der Konturring 4 mit der Hubkontur liegen, in Figur 1 unten, dichtend an einer (nicht dargestellten) Dichtfläche des Gehäuses 2 an. Auf der anderen Seite dieser beiden Teile ist eine Druckplatte 10 vorgesehen, durch die das von der Flügelzellenpumpe 1 geförderte Fluid von der Druckseite der Pumpe zu einem Druckausgang 8 gefördert wird, der mit einem Verbraucher in Verbindung steht.The rotor 5 and the contour ring 4 with the stroke contour lie in FIG. 1 below, sealingly on a (not shown) sealing surface of the housing 2 at. On the other side of these two parts, a pressure plate 10 is provided, through which the pumped by the vane pump 1 fluid is conveyed from the pressure side of the pump to a pressure outlet 8, which is in communication with a consumer.

Die in Figur 2 in der Draufsicht dargestellte Druckplatte 10 ist gemäß einem wesentlichen Aspekt der Erfindung in drei Ebenen 11, 12, 13 oder Bereiche unterteilt. In der ersten Ebene 11 ist ein Druckdurchgangsloch 16 ausgespart, das mit dem Druckbereich innerhalb des Konturrings 4 in Verbindung steht und wegen seiner nierenförmigen Gestalt auch als Druckniere bezeichnet wird. Das Druckdurchgangsloch 16 mündet auf der dem Rotor 5 abgewandten Seite in einen Kanalabschnitt 18, der in der zweiten Ebene 12 der Druckplatte 10 ausgebildet ist. In der ersten Ebene 11 der Druckplatte 10 ist des Weiteren ein Unterflügeldurchgangsloch 19 vorgesehen, das aufgrund seiner nierenförmigen Gestalt auch als Unterflügelniere bezeichnet wird.In the FIG. 2 shown in plan view pressure plate 10 is divided according to an essential aspect of the invention in three levels 11, 12, 13 or areas. In the first plane 11, a pressure through hole 16 is recessed, which is in communication with the pressure area within the contour ring 4 and is also referred to as Druckniere because of its kidney-shaped shape. The pressure passage hole 16 opens on the side facing away from the rotor 5 in a channel portion 18 which is formed in the second plane 12 of the pressure plate 10. Further, in the first plane 11 of the pressure plate 10, there is provided an underwing through-hole 19 which, because of its kidney-shaped shape, is also referred to as an under-wing kidney.

Das Unterflügeldurchgangsloch 19 mündet auf seiner dem Rotor 5 zugewandten Seite in einen Unterflügelversorgungsbereich, der am radial inneren Ende der Flügel 6 vorgesehen ist. Dem Unterflügelversorgungsbereich wird über das Unterflügeldurchgangsloch 19 mit Druck beaufschlagtes Arbeitsmedium, insbesondere Hydrauliköl, zugeführt, um ein Ausfahren der Flügel in radialer Richtung zu unterstützen. Das Unterflügeldurchgangsloch 19 mündet auf seiner dem Rotor 5 abgewandten Seite in einen Kanalabschnitt 20, der zusammen mit dem Kanalabschnitt 18 einen Kanal oder Fluidpfad begrenzt, der durch Pfeile 21, 22 angedeutet ist und sich von dem Druckdurchgangsloch 16 an dem Unterflügeldurchgangsloch 19 vorbei zu einer Öffnung 24 erstreckt, die in der dritten Ebene 13 der Druckplatte 10 von einer Strömungsleiteinrichtung 25 freigegebenen wird.The underwing passage hole 19 opens on its side facing the rotor 5 in an underfed supply area, which is provided at the radially inner end of the wings 6. The underfloor supply region is supplied with pressurized working medium, in particular hydraulic oil, via the underfloor through-hole 19 in order to assist in the extension of the vanes in the radial direction. The underwing passage hole 19 opens on its side facing away from the rotor 5 in a channel portion 20 which defines together with the channel portion 18, a channel or fluid path, which is indicated by arrows 21, 22 and from the pressure through hole 16 to the lower wing through hole 19 over to an opening 24 extends, which is released in the third plane 13 of the pressure plate 10 by a flow guide 25.

Die Strömungsleiteinrichtung 25 ist so ähnlich ausgeführt, wie eine in Figur 4 in zwei verschiedenen Ansichten dargestellte Strömungsleiteinrichtung 70. Die Strömungsleiteinrichtung 70 ist als Tellerfeder ausgeführt und umfasst ein zentrales Durchgangsloch 71. Radial außen weist die Tellerfeder 70 zwei Abflachungen 72, 73 auf, die im eingebauten Zustand der Tellerfeder 70 eine in Figur 2 mit 24 bezeichnete Öffnung schaffen, die den Durchtritt von mit Druck beaufschlagtem Arbeitsmedium zu dem Druckausgang 8 der Pumpe 1 ermöglicht.The flow guide 25 is designed to be similar to an in FIG. 4 The flow guide 70 is designed as a plate spring and comprises a central through hole 71. Radially outward, the plate spring 70 has two flats 72, 73, which in the installed state of the plate spring 70 is a in FIG. 2 create opening designated 24, which allows the passage of pressurized working fluid to the pressure outlet 8 of the pump 1.

Die Strömungsleiteinrichtung 25 liegt mit ihrem radial inneren Randbereich auf einem Innenringkörper 26 auf, der in der zweiten Ebene 12 der Druckplatte 10 ausgebildet ist. Zwischen dem radial inneren Randbereich der Strömungsleiteinrichtung 25 und der Druckplatte 10 ist eine Dichtung 33 angeordnet. Der Innenringkörper 26 ist durch einen Absatz mit einem weiteren Innenringkörper 27 verbunden, der sich in der dritten Ebene 13 der Druckplatte 10 erstreckt. Die Strömungsleiteinrichtung 25 liegt mit ihrem äußeren Randbereich auf einem Außenringkörper 28 auf, der sich in der zweiten Ebene 12 koaxial zu dem Innenringkörper 26 und dem weiteren Innenringkörper 27 erstreckt. Der Außenringkörper 28 ist durch einen weiteren Absatz mit einem weiteren Außenringkörper 29 verbunden, der sich in der dritten Ebene 13 der Druckplatte 10 erstreckt. Die Strömungsleiteinrichtung 25 ist in der dritten Ebene 13 der Druckplatte 10 in einem Ringraum angeordnet, der sich zwischen dem weiteren Innenringkörper 27 und dem weiteren Außenringkörper 29 in der dritten Ebene 13 der Druckplatte 10 erstreckt. Die Strömungsleiteinrichtung 25 ist in der Nähe ihres radial inneren Randbereichs durch einen ringwulstartigen Anlagebereich 30 beaufschlagt, der an dem Gehäuse 2 ausgebildet ist.The flow guide 25 rests with its radially inner edge region on an inner ring body 26 which is formed in the second plane 12 of the pressure plate 10. Between the radially inner edge region of the flow guide 25 and the pressure plate 10, a seal 33 is arranged. The inner ring body 26 is connected by a shoulder to a further inner ring body 27, which extends in the third plane 13 of the pressure plate 10. The flow guide 25 rests with its outer edge region on an outer ring body 28, which extends in the second plane 12 coaxial with the inner ring body 26 and the further inner ring body 27. The outer ring body 28 is connected by a further shoulder with a further outer ring body 29 which extends in the third plane 13 of the pressure plate 10. The flow guide 25 is arranged in the third plane 13 of the pressure plate 10 in an annular space which extends between the further inner ring body 27 and the further outer ring body 29 in the third plane 13 of the pressure plate 10. The flow guide 25 is acted upon in the vicinity of its radially inner edge region by a ring-bead-like contact region 30, which is formed on the housing 2.

Die beiden Kanalabschnitte 18 und 20 bilden zusammen einen Kanal, der durch Stege 31, 32 von einem weiteren Kanal 34 getrennt ist. Die Stege 31, 32 erstrecken sich in der zweiten Ebene der Druckplatte 10 von dem Innenringkörper 26 in radialer Richtung zu dem Außenringkörper 28. Durch die Stege 31, 32 ist der Innenringkörper 26 einstückig mit dem Außenringkörper 28 verbunden. Der Kanal 34 verbindet ein weiteres Unterflügeldurchgangsloch 36 mit einem weiteren Druckdurchgangsloch 35. Durch eine Abflachung 37 an der Strömungsleiteinrichtung 25 wird eine weitere Öffnung 38 zum Druckausgang 8 der Pumpe 1 geschaffen. Durch Pfeile 41, 42 ist in Figur 2 ein weiterer Fluidpfad angedeutet, über den mit Druck beaufschlagtes Arbeitsmedium aus dem weiteren Druckdurchgangsloch 36 an dem weiteren Unterflügeldurchgangsloch 35 vorbei zu der weiteren Öffnung 38 gelangt.The two channel sections 18 and 20 together form a channel which is separated by webs 31, 32 from a further channel 34. The webs 31, 32 extend in the second plane of the pressure plate 10 of the inner ring body 26 in the radial direction to the outer ring body 28. By the webs 31, 32 of the inner ring body 26 is integrally connected to the outer ring body 28. The channel 34 connects another lower wing through-hole 36 with a further pressure passage hole 35. By a flattening 37 on the flow guide 25, a further opening 38 to the pressure outlet 8 of the pump 1 is provided. By arrows 41, 42 is in FIG. 2 indicated a further fluid path, passes through the pressurized working fluid from the further pressure passage hole 36 at the further under-wing passage hole 35 over to the further opening 38.

Durch die erfindungsgemäße Strömungsleiteinrichtung 25 wird die Ölführung von den Druckdurchgangslöchern 16; 35 an den Unterflügeldurchgangslöchern 19, 36 vorbei zu dem Druckausgang 8 der Pumpe 1 optimiert. Dadurch kann das Kaltstartverhalten der Pumpe 1 erheblich verbessert werden. Das aus den Druckdurchgangslöchem 35, 16 austretende Arbeitsmedium gelangt über das zugeordnete Unterflügeldurchgangsloch 36, 19 zunächst in den Unterflügelversorgungsbereich und erst dann zum Druckausgang 8 der Pumpe 1. Die zugehörigen Kanäle 18, 20 und 34 werden auf der dem Rotor 5 abgewandten Seite der Druckplatte 10 durch die Strömungsleiteinrichtung 25 begrenzt. Das ist insbesondere dann hilfreich, wenn eine bestimmte Gehäuseausführung keine Begrenzung des Kanals beziehungsweise der Kanäle im Gehäuse zulässt. Im vorliegenden Beispiel werden durch die Stege 31, 32 zwei Pumpenhälften voneinander getrennt. Darüber hinaus kann durch die Stege 31, 32 eine gewünschte Strömungsrichtung vorgegeben werden. Die Öffnungen 24, 38, die durch die Strömungsleiteinrichtung 25 geschaffen werden, sind vorzugsweise in Strömungsrichtung hinter den jeweiligen Unterflügeldurchgangslöchern 19, 36 angeordnet.By the flow guide 25 according to the invention, the oil guide from the pressure passage holes 16; Optimized 35 at the lower wing through holes 19, 36 over to the pressure outlet 8 of the pump 1. As a result, the cold start behavior of the pump 1 can be significantly improved. The working medium emerging from the pressure passage holes 35, 16 passes via the associated lower-wing through-hole 36, 19 first into the underflügelversorgungsbereich and only then to the pressure outlet 8 of the pump 1. The associated channels 18, 20 and 34 are on the rotor 5 side facing away from the pressure plate 10th bounded by the flow guide 25. This is particularly useful when a particular housing design no limitation of the channel or the channels in the housing permits. In the present example, two halves of the pump are separated from one another by the webs 31, 32. In addition, by the webs 31, 32, a desired flow direction can be specified. The openings 24, 38 provided by the flow guide 25 are preferably arranged downstream of the respective lower-wing through-holes 19, 36.

In den Figuren 3 bis 5 sind verschiedene Ausgestaltungen von Strömungsleiteinrichtungen in Form von Tellerfedern 50; 70; 80 jeweils in der Draufsicht und der Vorderansicht dargestellt. Die dargestellten Tellerfedern 50; 70; 80 können anstelle der Strömungsleiteinrichtung 25, die ebenfalls als Tellerfeder ausgeführt ist, in die Pumpe 1 eingebaut werden, die in den Figuren 1 und 2 dargestellt ist.In the FIGS. 3 to 5 are various embodiments of Strömungsleiteinrichtungen in the form of disc springs 50; 70; 80 each shown in the plan view and the front view. The illustrated disc springs 50; 70; 80 may instead of the flow guide 25, which is also designed as a plate spring, are installed in the pump 1, which in the Figures 1 and 2 is shown.

Die in Figur 3 dargestellte Tellerfeder 50 umfasst mehrere Zungen 51 bis 56, die sich im Wesentlichen in radialer Richtung erstrecken, so dass die Tellerfeder also außen geschlitzt ist. Radial innen weist die Tellerfeder 50 ein zentrales Durchgangsloch 58 auf. Die Zungen 53, 54 und 55, 56 begrenzen in Umfangsrichtung Ausnehmungen 63, 64 sowie 65, 66, die jeweils eine Öffnung schaffen, die in Figur 2 mit 24, 38 bezeichnet ist und durch die Abflachungen 37, 39 der Tellerfeder 25 geschaffen wird. Weitere Ausnehmungen 62 und 61 zwischen den Zungen 53, 54 und 55, 56 dienen zur Verformungsoptimierung der Tellerfeder, und ermöglichen eine gleichmäßigere Spannungsverteilung.In the FIG. 3 shown plate spring 50 includes a plurality of tongues 51 to 56, which extend substantially in the radial direction, so that the plate spring is thus slotted outside. Radially inside, the plate spring 50 has a central through hole 58. The tongues 53, 54 and 55, 56 circumferentially bounded recesses 63, 64 and 65, 66, each of which create an opening in FIG. 2 is denoted by 24, 38 and by the flats 37, 39 of the plate spring 25 is provided. Further recesses 62 and 61 between the tongues 53, 54 and 55, 56 serve to optimize the deformation of the diaphragm spring, and allow a more uniform distribution of stress.

Die in Figur 4 dargestellte und bereits beschriebene Tellerfeder 70 umfasst im Bereich Ihrer Abflachungen 72, 73 jeweils eine Nase 74, 75. Die beiden Nasen 74, 75 sind in entgegengesetzten Richtungen so angeordnet, dass sie einen verdrehsicheren Einbau der Tellerfeder 70 ermöglichen. Der verdrehsichere Einbau liefert den Vorteil, dass die Abflachungen 72, 73 beim Einbau korrekt positioniert werden und auch bleiben.In the FIG. 4 illustrated and already described disc spring 70 comprises in the region of their flats 72, 73 each have a nose 74, 75. The two lugs 74, 75 are arranged in opposite directions so that they allow a rotationally secure installation of the plate spring 70. The twist-proof installation has the advantage that the flats 72, 73 are correctly positioned during installation and remain so.

Die bevorzugte Strömungsrichtung in den Kanälen 18, 20 und 34 ist vorzugsweise gleichsinnig mit der Drehrichtung des Rotors 5. Um eine verbesserte Anströmung der Unterflügeldurchgangslöcher 19; 36 zu erreichen, können die Kanäle 18, 20 und 34 strömungstechnisch optimiert, zum Beispiel zu den Unterflügeldurchgangslöchern 19; 36 hin verengt werden. Die Kanäle 18, 20 und 34 können so ausgebildet werden, dass entweder die Druckniere und die Unterflügelniere der gleichen Pumpenhälfte oder von gegenüberliegenden Pumpenhälften verbunden werden. Die Gestaltung und Position der Tellerfedern 25; 50; 70; 80 sind vorzugsweise so gewählt, dass die Kanäle 18, 20 und 34 vor und hinter der Tellerfeder den gleichen Durchtrittsquerschnitt ermöglichen. Von den Öffnungen 24, 38 strömt das Medium in der dritten Ebene 13 zu dem Druckausgang 8.The preferred flow direction in the channels 18, 20 and 34 is preferably in the same direction as the direction of rotation of the rotor 5. In order to improve the flow of the under wing through holes 19; 36, the channels 18, 20, and 34 may be fluidly optimized, for example, to the underfloor vias 19; 36 be narrowed down. The channels 18, 20 and 34 can be formed so that either the pressure kidney and the under wing kidney are connected to the same pump half or from opposite pump halves. The design and position of the disc springs 25; 50; 70; 80 are preferably chosen so that the channels 18, 20 and 34 in front of and behind the plate spring allow the same passage cross-section. From the openings 24, 38, the medium in the third plane 13 flows to the pressure outlet 8.

Die in Figur 5 dargestellte Tellerfeder 80 hat die Gestalt einer Kreisringscheibe mit einem zentralen Durchgangsloch 85. Im Bereich des Druckausgangs (8 in Figur 1) sind jeweils zwei Durchgangslöcher 81, 82 und 83, 84 ausgespart, die den Durchtritt von mit Druck beaufschlagtem Arbeitsmedium aus dem jeweiligen Kanal 18, 20 und 34 zum Druckausgang ermöglichen.In the FIG. 5 plate spring 80 has the shape of a circular disk with a central through hole 85. In the region of the pressure output (8 in FIG. 1 ) are each two through holes 81, 82 and 83, 84 recessed, which allow the passage of pressurized working fluid from the respective channel 18, 20 and 34 to the pressure outlet.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Pumpepump
22
Gehäusecasing
44
Konturringcontour ring
55
Rotorrotor
66
Flügelwing
88th
Druckausgangpressure outlet
1010
Druckplatteprinting plate
1111
erste Ebenefirst floor
1212
zweite Ebenesecond level
1313
dritte EbeneThird level
1616
DruckdurchgangslochPressure through hole
1818
Kanalabschnittchannel section
1919
UnterflügeldurchgangslochUnderwing through hole
2020
Kanalabschnittchannel section
2121
Pfeilarrow
2222
Pfeilarrow
2424
Öffnungopening
2525
Strömungsleiteinrichtungflow guide
2626
InnenringkörperInner ring body
2727
weiterer Innenringkörperfurther inner ring body
2828
AußenringkörperOuter ring body
2929
weiterer Außenringkörperfurther outer ring body
3030
Anlagebereichplant area
3131
Stegweb
3232
Stegweb
3333
Dichtungpoetry
3434
Kanalchannel
3535
UnterflügeldurchgangslochUnderwing through hole
3636
DruckdurchgangslochPressure through hole
3737
Abflachungflattening
3838
Öffnungopening
3939
Abflachungflattening
4141
Pfeilarrow
4242
Pfeilarrow
5050
TellerfederBelleville spring
5151
Zungetongue
5252
Zungetongue
5353
Zungetongue
5454
Zungetongue
5555
Zungetongue
5656
Zungetongue
5858
zentrales Durchgangslochcentral through hole
6161
Ausnehmungrecess
6262
Ausnehmungrecess
6363
Ausnehmungrecess
6464
Ausnehmungrecess
6565
Ausnehmungrecess
6666
Ausnehmungrecess
7070
TellerfederBelleville spring
7171
zentrales Durchgangslochcentral through hole
7272
Abflachungflattening
7373
Abflachungflattening
7474
Nasenose
7575
Nasenose
8080
TellerfederBelleville spring
8181
DurchgangslochThrough Hole
8282
DurchgangslochThrough Hole
8383
DurchgangslochThrough Hole
8484
DurchgangslochThrough Hole
8585
zentrales Durchgangslochcentral through hole

Claims (13)

  1. Pump, more particularly a vane-type pump, with a rotor (5) driving at least one vane (6) and bearing against at least one pressure plate (10) which has at least one pressure clearance hole (16, 35) and at least one under-vane through hole (19, 36) which are in connection with a pressure output (8) which is provided in a housing (2) of the pump (1) wherein between the pressure plate (10) and the housing (2) there is a flow guide device (25; 50; 70; 80) which defines a fluid path (21, 22; 41 42) which runs from the at least one pressure clearance hole (16, 35) initially over a channel section (18) or channel (34) to the at least one under-vane through hole (19, 36) and then over a channel section (20) or channel (34) and openings (24, 38) to the pressure outlet (8), characterised in that the flow guide device (25; 50; 70; 80) is designed as a plate spring which is tensioned between the pressure plate (10) and the housing (2).
  2. Pump according to claim 1, characterised in that the plate spring (50) is slit radially on the outside.
  3. Pump according to claim 1 characterised in that the plate spring (25, 70) is flattened radially on the outside.
  4. Pump according to claim 1 characterised in that the plate spring (80) has at least one through hole (81, 82, 83, 84).
  5. Pump according to claim 1 characterised in that the pressure plate (10) has a first plane (11) with the pressure clearance hole (16, 35) and the under-vane through hole (19, 36), and a second plane (12) with at least one flow channel (18, 20; 34) which in part defines the fluid path (21, 22 ; 41, 42) from the pressure clearance hole (16, 35) past the under-vane through hole (19, 36) to the pressure outlet (8).
  6. Pump according to claim 5 characterised in that the flow channel (18, 20; 34) is defined in the second plane (12) of the pressure plate (10) in the axial direction towards the housing (2) by the flow guide device (25; 50; 70; 80).
  7. Pump according to claim 5 or 6 characterised in that the pressure plate (10) has in the second plane (12) webs (31, 32) which separate two flow channels (18, 20;34) from one another.
  8. Pump according to one of claims 5 to 7 characterised in that the pressure plate (10) has in the second plane (12) radially on the inside an inner ring body (26) against which the flow guide device (25; 50; 70; 80) partly adjoins.
  9. Pump according to claim 8 characterised in that the pressure plate (10) has in the third plane (13) radially on the inside a further inner ring body (27) which is surrounded by the flow guide device (25; 50; 70; 80) and adjoined by a seal (33).
  10. Pump according to one of claims 5 to 9 characterised in that the pressure plate (10) has in the second plane (12) radially on the outside an outer ring body (28) against which the flow guide device (25; 50; 70; 80) adjoins in part.
  11. Pump according to claim 10 characterised in that the pressure plate (10) has in a or the third plane (12) radially on the outside a further outer ring body (29) which surrounds the flow guide device (25; 50; 70; 80).
  12. Pump according to one of the preceding claims characterised in that a contact bearing area (30) is formed on the housing (2) and bears against the flow guide device (25; 50; 70; 80).
  13. Pump according to one of the preceding claims characterised in that the flow channel (18; 20; 34) has a constriction in the area of an under-vane groove or under-vane kidney.
EP09744036A 2008-10-22 2009-09-16 Pump, particularly vane-type pump Active EP2337928B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008052778 2008-10-22
PCT/DE2009/001298 WO2010045906A2 (en) 2008-10-22 2009-09-16 Pump, particularly vane-type pump

Publications (2)

Publication Number Publication Date
EP2337928A2 EP2337928A2 (en) 2011-06-29
EP2337928B1 true EP2337928B1 (en) 2013-02-13

Family

ID=42119731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09744036A Active EP2337928B1 (en) 2008-10-22 2009-09-16 Pump, particularly vane-type pump

Country Status (5)

Country Link
US (1) US8784083B2 (en)
EP (1) EP2337928B1 (en)
DE (1) DE112009002350A5 (en)
ES (1) ES2400629T3 (en)
WO (1) WO2010045906A2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014212022B4 (en) * 2013-07-08 2016-06-09 Magna Powertrain Bad Homburg GmbH pump
DE102013113894A1 (en) * 2013-12-12 2015-06-18 Robert Bosch Automotive Steering Gmbh Vane pump with absorber volume
DE102015105933B4 (en) 2015-04-17 2018-04-26 Schwäbische Hüttenwerke Automotive GmbH pump
DE102015105928B4 (en) 2015-04-17 2018-05-17 Schwäbische Hüttenwerke Automotive GmbH pump
DE102016204099B3 (en) * 2016-03-11 2017-03-16 Magna Powertrain Bad Homburg GmbH Seal arrangement for switchable vane pump in cartridge design
DE102018133681A1 (en) * 2018-12-28 2020-07-02 Schwäbische Hüttenwerke Automotive GmbH Rotary pump with axial compensation, outlet seal for one pump and pre-assembled pump unit
WO2021096706A1 (en) 2019-11-12 2021-05-20 Fresenius Medical Care Deutschland Gmbh Blood treatment systems
CA3160853A1 (en) 2019-11-12 2021-05-20 Fresenius Medical Care Deutschland Gmbh Blood treatment systems
EP4058094A1 (en) 2019-11-12 2022-09-21 Fresenius Medical Care Deutschland GmbH Blood treatment systems
EP4058088A1 (en) 2019-11-12 2022-09-21 Fresenius Medical Care Deutschland GmbH Blood treatment systems
DE102020116731A1 (en) * 2020-06-25 2021-12-30 Schwäbische Hüttenwerke Automotive GmbH Pump with attached seal
DE102021126416A1 (en) 2021-10-12 2023-04-13 Schwäbische Hüttenwerke Automotive GmbH Axial locking of a pump

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US3223044A (en) * 1963-07-18 1965-12-14 American Brake Shoe Co Three-area vane type fluid pressure energy translating devices
US4431389A (en) * 1981-06-22 1984-02-14 Vickers, Incorporated Power transmission
JPS6179881A (en) * 1984-09-28 1986-04-23 Toyoda Mach Works Ltd Vane pump
EP0758716B1 (en) * 1995-08-14 2003-12-10 LuK Fahrzeug-Hydraulik GmbH & Co. KG Vane pump
DE19631846A1 (en) 1995-08-14 1997-02-20 Luk Fahrzeug Hydraulik Centrifugal flywheel pump with two section
US6481990B2 (en) * 2001-03-21 2002-11-19 Delphi Technologies, Inc. Hydraulically balanced multi-vane hydraulic motor
JP3861721B2 (en) * 2001-09-27 2006-12-20 ユニシア ジェーケーシー ステアリングシステム株式会社 Oil pump
US6655936B2 (en) * 2001-11-14 2003-12-02 Delphi Technologies, Inc. Rotary vane pump with under-vane pump

Also Published As

Publication number Publication date
WO2010045906A3 (en) 2010-09-16
EP2337928A2 (en) 2011-06-29
ES2400629T3 (en) 2013-04-11
US20110211985A1 (en) 2011-09-01
WO2010045906A2 (en) 2010-04-29
DE112009002350A5 (en) 2011-06-30
US8784083B2 (en) 2014-07-22

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