EP2337928A2 - Pumpe, insbesondere flügelzellenpumpe - Google Patents
Pumpe, insbesondere flügelzellenpumpeInfo
- Publication number
- EP2337928A2 EP2337928A2 EP09744036A EP09744036A EP2337928A2 EP 2337928 A2 EP2337928 A2 EP 2337928A2 EP 09744036 A EP09744036 A EP 09744036A EP 09744036 A EP09744036 A EP 09744036A EP 2337928 A2 EP2337928 A2 EP 2337928A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- pump
- pump according
- plane
- pressure plate
- 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
Links
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 210000003734 kidney Anatomy 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000000284 resting effect Effects 0.000 abstract 1
- 241000256259 Noctuidae Species 0.000 description 9
- 210000002105 tongue Anatomy 0.000 description 9
- 238000009434 installation Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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 discloses a vane pump with a leading from a pressure side to a consumer first fluid path and at least one hydraulic resistance element is known, 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 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, characterized in that between the pressure plate and the housing, a flow guide is arranged, which limits a fluid path from the pressure passage hole on the under-wing passage hole to the pressure outlet.
- the pressure passage hole is preferably designed as Druckniere and communicates with a pressure chamber in the interior of the pump.
- the underwing passage hole is preferably designed as a lower wing kidney and serves to ensure an under wing supply of the wing or the blades of the pump.
- the flow guide according to the invention is specifically a working fluid, in particular a hydraulic medium, such as oil, from the Druckedgangsloch first passed to the underwing passage hole or guided, and only then to the pressure outlet of the pump.
- a working fluid in particular a hydraulic medium, such as oil
- 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.
- 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 confining the fluid pf ad from the pressure passage hole past 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 separate two flow channels from each other.
- 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 interior Ring body are preferably integrally connected 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, which is clamped between the pressure plate and 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. This improves the flow of the undercut groove or kidney.
- Figure 1 is a vane pump in section along a line l-l in Figure 2;
- Figure 2 shows the vane pump of Figure 1 in a cross section without housing
- a vane pump 1 is greatly simplified in different views.
- the pump 1 comprises a housing 2, shown only in FIG. 1, with a contoured ring 4, within which a rotor 5 with wings 6 is rotatably driven.
- 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 at the bottom, sealingly against a sealing surface (not shown) of the housing 2.
- 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.
- the pressure plate 10 shown in plan view in FIG. 2 is subdivided into three levels 11, 12, 13 or areas according to an essential aspect of the invention.
- 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 te 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 on 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-guiding device 25 is embodied in a similar way to a flow-directing device 70 shown in two different views in FIG. 4.
- the flow-directing device 70 is designed as a plate spring and comprises a central through-hole 71. Radially outward, the plate spring 70 has two flattened areas 72, 73, which in the FIG built state of the plate spring 70 create an opening designated 24 in Figure 2, 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 extending between the further inner ring body 27 and the further outer ring body 29 in the third plane 13 of the pressure plate 10 extends.
- 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 from the inner ring body 26 in the radial direction 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.
- Arrows 41, 42 indicate a further fluid path in FIG. 2, via which pressurized working medium passes from the further pressure passage hole 36 past the further under-wing passage hole 35 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 exiting 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 does not allow for limiting the channel or channels in the housing. 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 show different embodiments of flow guiding devices 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 is shown in Figures 1 and 2.
- the plate spring 50 shown in Figure 3 comprises a plurality of tongues 51 to 56 which extend substantially in the radial direction, so that the plate spring is thus slotted on the outside. Radially inside, the plate spring 50 has a central through hole 58.
- the tongues 53, 54 and 55, 56 delimit circumferentially recesses 63, 64 and 65, 66, each of which provide an opening which is indicated in Figure 2 with 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.
- the plate spring 70 shown in FIG. 4 and already described comprises a nose 74, 75 in the region of its flattened portions 72, 73.
- the two lugs 74, 75 are arranged in opposite directions so as to enable a torsion-proof 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 fluidically optimized, for example to the underfloor passage holes 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 selected 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.
- the plate spring 80 shown in Figure 5 has the shape of a circular disk with a central through hole 85.
- the pressure outlet (8 in Figure 1) are each two through holes 81, 82 and 83, 84 recessed, the passage of pressurized working medium allow the respective channel 18, 20 and 34 to the pressure outlet.
- Inner ring body further inner ring body
- Outer ring body further outer ring body
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008052778 | 2008-10-22 | ||
PCT/DE2009/001298 WO2010045906A2 (de) | 2008-10-22 | 2009-09-16 | Pumpe, insbesondere flügelzellenpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2337928A2 true EP2337928A2 (de) | 2011-06-29 |
EP2337928B1 EP2337928B1 (de) | 2013-02-13 |
Family
ID=42119731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09744036A Active EP2337928B1 (de) | 2008-10-22 | 2009-09-16 | Pumpe, insbesondere flügelzellenpumpe |
Country Status (5)
Country | Link |
---|---|
US (1) | US8784083B2 (de) |
EP (1) | EP2337928B1 (de) |
DE (1) | DE112009002350A5 (de) |
ES (1) | ES2400629T3 (de) |
WO (1) | WO2010045906A2 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014212022B4 (de) * | 2013-07-08 | 2016-06-09 | Magna Powertrain Bad Homburg GmbH | Pumpe |
DE102013113894A1 (de) * | 2013-12-12 | 2015-06-18 | Robert Bosch Automotive Steering Gmbh | Flügelzellenpumpe mit Tilgervolumen |
DE102015105933B4 (de) | 2015-04-17 | 2018-04-26 | Schwäbische Hüttenwerke Automotive GmbH | Pumpe |
DE102015105928B4 (de) | 2015-04-17 | 2018-05-17 | Schwäbische Hüttenwerke Automotive GmbH | Pumpe |
DE102016204099B3 (de) * | 2016-03-11 | 2017-03-16 | Magna Powertrain Bad Homburg GmbH | Dichtungsanordnung für schaltbare Flügelzellenpumpe in Cartridge-Bauweise |
DE102018133681A1 (de) * | 2018-12-28 | 2020-07-02 | Schwäbische Hüttenwerke Automotive GmbH | Rotationspumpe mit axialer Kompensation, Auslassdichtung für eine Pumpe sowie vormontierte Pumpeneinheit |
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 (de) | 2019-11-12 | 2022-09-21 | Fresenius Medical Care Deutschland GmbH | Blutbehandlungssysteme |
EP4058088A1 (de) | 2019-11-12 | 2022-09-21 | Fresenius Medical Care Deutschland GmbH | Blutbehandlungssysteme |
DE102020116731A1 (de) * | 2020-06-25 | 2021-12-30 | Schwäbische Hüttenwerke Automotive GmbH | Pumpe mit befestigter Dichtung |
DE102021126416A1 (de) | 2021-10-12 | 2023-04-13 | Schwäbische Hüttenwerke Automotive GmbH | Axialsicherung einer Pumpe |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (ja) * | 1984-09-28 | 1986-04-23 | Toyoda Mach Works Ltd | ベ−ンポンプ |
EP0758716B1 (de) * | 1995-08-14 | 2003-12-10 | LuK Fahrzeug-Hydraulik GmbH & Co. KG | Flügelzellenpumpe |
DE19631846A1 (de) | 1995-08-14 | 1997-02-20 | Luk Fahrzeug Hydraulik | Pumpe |
US6481990B2 (en) * | 2001-03-21 | 2002-11-19 | Delphi Technologies, Inc. | Hydraulically balanced multi-vane hydraulic motor |
JP3861721B2 (ja) * | 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 | オイルポンプ |
US6655936B2 (en) * | 2001-11-14 | 2003-12-02 | Delphi Technologies, Inc. | Rotary vane pump with under-vane pump |
-
2009
- 2009-09-16 US US13/125,268 patent/US8784083B2/en active Active
- 2009-09-16 WO PCT/DE2009/001298 patent/WO2010045906A2/de active Application Filing
- 2009-09-16 DE DE112009002350T patent/DE112009002350A5/de not_active Withdrawn
- 2009-09-16 EP EP09744036A patent/EP2337928B1/de active Active
- 2009-09-16 ES ES09744036T patent/ES2400629T3/es active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2010045906A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2010045906A3 (de) | 2010-09-16 |
EP2337928B1 (de) | 2013-02-13 |
ES2400629T3 (es) | 2013-04-11 |
US20110211985A1 (en) | 2011-09-01 |
WO2010045906A2 (de) | 2010-04-29 |
DE112009002350A5 (de) | 2011-06-30 |
US8784083B2 (en) | 2014-07-22 |
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