EP0910746B1 - Flügelzellenpumpe - Google Patents
Flügelzellenpumpe Download PDFInfo
- Publication number
- EP0910746B1 EP0910746B1 EP98920506A EP98920506A EP0910746B1 EP 0910746 B1 EP0910746 B1 EP 0910746B1 EP 98920506 A EP98920506 A EP 98920506A EP 98920506 A EP98920506 A EP 98920506A EP 0910746 B1 EP0910746 B1 EP 0910746B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- vane
- rotor
- cell pump
- 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.)
- Expired - Lifetime
Links
Images
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
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
-
- 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
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0023—Axial sealings for working fluid
Definitions
- the invention relates to a vane pump according to Preamble of claim 1.
- Vane pumps of the type mentioned here are known. They serve, for example, a fluid to provide for a power steering system in a vehicle. They have a pump unit that a cam ring and one rotatably mounted in this Includes rotor. This is radial to Provide axes of rotation in which Wing movably supported in the radial direction are. When the rotor rotates inside the The wings are larger and smaller from the wings being formed subspaces, so that at least ever a suction and a pressure area are created. At least on one side of the pump unit is a pressure plate provided a side boundary surface for the suction and pressure areas. in the Operation of the pump will counter the pressure plate Pump unit pressed, causing wear greatly increased. To counteract this, at the installation of the pump a corresponding game between The cam ring and rotor are provided, making the volumetric Efficiency is often not sufficient is.
- a vane pump is known from US Pat. No. 3,695,791 known in which an arched, from a bimetal manufactured printing plate is used.
- the pressure plate is installed so that a predetermined Distance between the pressure plate and the Rotor remains and that the pressure plate is planar between the housing and the rotor is clamped. Due to the bimetallic function of the sealing washer should be achieved that this in operation of the pump Distance remains. Should the pressure plate under a pressure given during the operation of the pump are bent, so the deflection at heating of the fluid to be pumped is canceled, since the bimetal is heated accordingly and counteracts the deflection caused by the pressure forces, by snapping the pressure plate back. It has been shown that in the known pump not a sufficient volumetric in all cases Efficiency can be guaranteed.
- a vane pump is used to solve this task proposed that mentioned in claim 1 Features. This distinguishes the pump from that the surface facing the pump unit the pressure plate, i.e. the side of the pressure plate, the rotor, the wings, the cam ring and is facing the suction and pressure areas, in depressurized state of the pump is concave is. In the unloaded state of the pressure plate, that is at low pressure (for example when driving straight ahead, if there is no steering), this is sufficient Given the distance to the rotor and the blades, so that at low pressure the oil friction in Gap and thus the mechanical losses low are.
- An embodiment of the pump is preferred, which is characterized in that on each side the rotor or the pump unit each a pressure plate is provided, which accordingly are concave, the concave side is facing the pressure plate of the pump unit.
- Vane pumps of the type mentioned here are basically known, so that on their structure and Function is not discussed in detail. It is exemplified here by a pump for a Power steering system out.
- the partial section shown in Figure 1 through the Vane pump 1 shows a pump unit 3 that a rotor 5 and a cam ring 7 surrounding it includes.
- a rotor 5 In the rotor 5 are in the radial direction running slots 9 introduced into the radial Movable wing 11 are used.
- the inner contour of the lifting ring 7 is not circular, but approximately elliptical, so that when the rotor rotates, the blades 11 on and off be extended. It becomes subspaces trained which during one revolution of the Enlarge and reduce the rotor so that at least a suction and a pressure area are created.
- a first Pressure plate 13 On the one side of the pump unit 3 is a first Pressure plate 13 is provided.
- the pump unit On the other hand can the pump unit on a flat housing surface issue.
- second pressure plate 15 is provided. That of the pump unit 3 facing surface of the first Pressure plate 13 is concave, as is the Surface 19 of the second pressure plate 15, which the Pump unit 3 is facing.
- the pressure plates 13 and 15 practically only with their outer edges on the lateral boundary surfaces of the Hubrings 7 on.
- the one facing away from the rotor 5 Sides of the pressure plates 13, 15 is given pressure low (for example "circulation pressure") or zero, see above that the load on the outer edges of the pressure plates is low.
- the vane pump 1 acts on the Outer surfaces 21 and 23 of the pressure plates 13 and 15 a high pressure force, such as when the Steering is given. This is shown in FIG Arrows indicated.
- the width of the cam ring 7 corresponds approximately to that Width of the rotor 5.
- the wings 11 are slightly narrower than the rotor 5 and Hubring 7. Due to the fact that the pressure plates 13 and 15 under pressure on the pump unit 3 are in the wing 11 given only extremely narrow gaps, so that under high pressure a very good volumetric efficiency results. That is, from the wings subdivided subspaces are optimally opposed to each other sealed, so that from the vane pump conveyed medium only to an extremely low Flow part back from the pressure area to the suction area can. At a low pressure, as shown in Figure 1 was assumed, for example in the case of circulation printing, there is a relatively poor volumetric Efficiency.
- the deflection of the pressure plates 13, 15 takes place continuously, i.e. evenly with increasing, on the surface facing away from the rotor 5 the pressure applied to the printing plates. As a result of that the pressure plates 13, 15 move freely and without pretension installed, will be jerky Deflection avoided. It is particularly advantageous also that the pressure plates 13, 15 at a high Pressure of the fluid to be pumped with a surface pressure and at a low pressure of the fluid be loaded with an edge pressure. In both Cases are those that act on the printing plates Forces relatively low.
- the printing plates can remain unencumbered during manufacture a concave surface is worked out, or can be pre-bent to then under defined Preload forces a flat surface to work out the one in the unloaded state concave curvature.
- Deformation of the pressure plates under operating pressure 13 and 15 can be chosen by the choice of material for the printing plates and by specifying a certain plate thickness can be defined. It is thus possible, a defined behavior of the printing plates to specify in the operating state.
- the curvature of the surfaces 17 and 19 can be chosen in this way be the deepest in the unloaded state Point of the pressure plates 13 and 15 opposite one imaginary level around 10 ⁇ m to 40 ⁇ m, preferably jumps back by 15 ⁇ m to 30 ⁇ m.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Description
- Figur 1
- einen Teilschnitt durch eine Flügelzellenpumpe unter geringerem Druck und
- Figur 2
- einen Teilschnitt durch die in Figur 1 dargestellte Flügelzellenpumpe unter Betriebsdruck (hohem Druck bei Lenkbetätigung.
Claims (5)
- Flügelzellenpumpe (1) mit einem eine Anzahl von in radialer Richtung beweglichen Flügeln (11) aufnehmenden Rotor (5), einein den Rotor umgebenden, mindestens einen Saug- und einen Druckbereich bildenden Hubring (7) und mit mindestens einer eine seitliche Begrenzungsfläche der Saug- und Druckbereiche bildenden Druckplatte (13), die im Betrieb der Flügelzellenpumpe auf ihre den Saug- und Druckbereichen abgewandten Seite druckbeaufschlagt ist, dadurch gekennzeichnet, daß die dem Rotor (5) zugewandte Oberfläche (17;19) der Druckplatte (13;15) -im drucklosen Zustand der Flügelzellenpumpe (1)- konkav ausgebildet ist.
- Flügelzellenpumpe nach Anspruch 1, dadurch gekennzeichnet, daß auf jeder Seite des Rotors (5) und des Hubrings (7) Druckplatten (13;15) vorgesehen sind, und daß die dem Rotor (5), den Flügeln (11), dem Hubring (7) und dem Saug- und Druckbereichen zugewandte Oberfläche (19) der zweiten Druckplatte (15) -im drucklosen Zustand der Flügelzellenpumpe (1)- konkav ausgebildet ist.
- Flügelzellenpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Wölbung der konkaven Oberflächen (17;19) der Druckplatte(n) (13;15) so gewählt ist, daß diese Oberfläche (17;19) -unter Betriebsdruck- praktisch eben ist.
- Flügelzellenpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Seitenflächen der Druckplatte(n) (13;15) im wesentlichen parallel zueinander verlaufen.
- Flügelzellenpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Hubring (7) und der Rotor (3) gleich breit ausgebildet sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19715650 | 1997-04-15 | ||
DE19715650 | 1997-04-15 | ||
PCT/EP1998/002082 WO1998046884A1 (de) | 1997-04-15 | 1998-04-09 | Flügelzellenpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0910746A1 EP0910746A1 (de) | 1999-04-28 |
EP0910746B1 true EP0910746B1 (de) | 2003-03-05 |
Family
ID=7826545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98920506A Expired - Lifetime EP0910746B1 (de) | 1997-04-15 | 1998-04-09 | Flügelzellenpumpe |
Country Status (6)
Country | Link |
---|---|
US (1) | US6123532A (de) |
EP (1) | EP0910746B1 (de) |
JP (1) | JP4094682B2 (de) |
DE (1) | DE19880474D2 (de) |
GB (1) | GB2329678B (de) |
WO (1) | WO1998046884A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0513782U (ja) * | 1991-08-02 | 1993-02-23 | エバーコート株式会社 | 葉書等の通信体 |
JP2006249944A (ja) * | 2005-03-08 | 2006-09-21 | Toyota Motor Corp | ベーンポンプ |
TWI421481B (zh) * | 2011-06-24 | 2014-01-01 | Universal Cement Corp | 預壓式壓力感測器模組 |
CN102777379B (zh) * | 2012-05-24 | 2015-09-09 | 温岭市大众精密机械有限公司 | 一种叶片泵配油盘 |
JP6163111B2 (ja) * | 2014-01-21 | 2017-07-12 | 株式会社ショーワ | ベーンポンプユニット |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2544988A (en) * | 1949-03-12 | 1951-03-13 | Vickers Inc | Power transmission |
US3019737A (en) * | 1960-02-12 | 1962-02-06 | Thompson Ramo Wooldridge Inc | Leaf spring seal for pumps |
US3096720A (en) * | 1962-01-02 | 1963-07-09 | Gil W Younger | Rotary gear pumps |
US3695791A (en) * | 1970-09-18 | 1972-10-03 | Emerson Electric Co | Variable sealed hydraulic pump or motor |
US3752609A (en) * | 1972-02-17 | 1973-08-14 | Sperry Rand Corp | Vane pump with fluid-biased end walls |
US4050855A (en) * | 1975-02-26 | 1977-09-27 | Nippon Piston Ring Kabushiki Kaisha | Dry air rotary pump or compressor |
JPS5514783Y2 (de) * | 1975-05-01 | 1980-04-04 | ||
JPS5358807A (en) * | 1976-11-09 | 1978-05-27 | Nippon Piston Ring Co Ltd | Rotary fluid pump |
JPS58133493A (ja) * | 1982-02-03 | 1983-08-09 | Diesel Kiki Co Ltd | ベ−ン型圧縮機 |
-
1998
- 1998-04-09 WO PCT/EP1998/002082 patent/WO1998046884A1/de active IP Right Grant
- 1998-04-09 US US09/202,514 patent/US6123532A/en not_active Expired - Lifetime
- 1998-04-09 JP JP54346298A patent/JP4094682B2/ja not_active Expired - Lifetime
- 1998-04-09 DE DE19880474T patent/DE19880474D2/de not_active Expired - Lifetime
- 1998-04-09 EP EP98920506A patent/EP0910746B1/de not_active Expired - Lifetime
- 1998-04-09 GB GB9827131A patent/GB2329678B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2329678B (en) | 2001-03-14 |
GB9827131D0 (en) | 1999-02-03 |
GB2329678A (en) | 1999-03-31 |
EP0910746A1 (de) | 1999-04-28 |
DE19880474D2 (de) | 1999-09-02 |
US6123532A (en) | 2000-09-26 |
WO1998046884A1 (de) | 1998-10-22 |
JP2000512714A (ja) | 2000-09-26 |
JP4094682B2 (ja) | 2008-06-04 |
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