EP0906512A1 - Pompe a ailettes - Google Patents
Pompe a ailettesInfo
- Publication number
- EP0906512A1 EP0906512A1 EP97929260A EP97929260A EP0906512A1 EP 0906512 A1 EP0906512 A1 EP 0906512A1 EP 97929260 A EP97929260 A EP 97929260A EP 97929260 A EP97929260 A EP 97929260A EP 0906512 A1 EP0906512 A1 EP 0906512A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- area
- pressure plate
- opposite
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- 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
- 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
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0023—Axial sealings for working fluid
Definitions
- the invention relates to a flight egg pump according to the preamble of claim 1.
- Vane cell pumps of the type mentioned here are known. They have a rotor, in the circumferential wall of which slots that accommodate vanes are made. The rotor rotates within a contour ring, which preferably forms two crescent-shaped delivery spaces, which are traversed by the flights. When the rotor rotates, the space becomes larger and smaller. The operation of the wing cell pump thus results in suction and pressure areas. With a contour ring of the type mentioned here, there are two separate pump sections, each with a suction area and a pressure area.
- the lateral limitation of the pressure range takes place on the outlet or front side by means of a close-fitting pressure plate and on the side opposite the front side, for example by the housing of the wing cell pump. 7/49915 PC ⁇ 7EP97 / 03277
- the fluid required by the vane cell pump for example hydraulic oil
- its viscosity increases, so that the mobility of the wings decreases.
- the still separate pump section demands the fluid.
- the delivery rate is greatly reduced, since there is a hydraulic connection between the conveying lower pressure area to the opposite upper pressure area and there to the suction area.
- the vane cell pump has two pressure plates lying close to the rotor, the pressure plate opposite the front side having an opening which establishes a fluid connection between a preferably lower pressure area and a closed pressure chamber.
- pressure is built up in this pressure chamber, which bends the pressure plate slightly towards the rotor and presses it tightly against the rotor.
- the pressure built up in the conveying area leads in the same way to a force being exerted on the forward pressure plate which presses this pressure plate close to the rotor.
- a short circuit between the two pressure areas across the pressure space is avoided by the fact that only one of the two pressure areas is connected to the pressure space in the pressure plate opposite the front side.
- the other pressure range of the pump is sealed by the pressure plate to the pressure chamber.
- At least one of the fluid connections in the pressure plate opposite the delivery side has a passage area which is smaller than 1/3 of the passage area of the outlet opening of the delivery side pressure plate.
- the pressure plate which closes the pressure chamber and which comprises an opening for connecting the lower pressure region to the pressure chamber has a further relatively small opening which flows from the pressure chamber into the other pressure region located above.
- this opening the pressure chamber can be vented when the pump is started up for the first time, with the advantageous result of a noise reduction.
- it In order to prevent a short circuit via this venting opening, it must be designed in such a way that it has a very high hydraulic resistance for a cold fluid of high viscosity.
- an opening is provided on the pressure plate opposite the delivery side, which connects the upper pressure area in the installed position to the pressure chamber.
- the pressure area located below is sealed off by the pressure plate from the pressure chamber.
- An advantageous embodiment also consists in the pressure plate opposite the front side to be provided with two openings, each of which creates a connection between a pressure area and the pressure chamber and which have a high hydraulic resistance. The sum of the two resistances must exceed a value which is necessary to avoid a short circuit in the cold start phase.
- Figure 1 is a schematic sectional view of a vane cell pump
- FIG. 1 Two pressure plates of the air cell pump, 2a, 2b and
- Figures show schematic representations of four differently designed air cell pumps.
- a joint pump For a better understanding, the structure of a joint pump will first be discussed in general with reference to FIG. 1.
- This comprises a housing 1 in which a channel 3 leading to an outlet is provided.
- a consumer for example a power steering device, is supplied with a fluid, for example hydraulic oil, via the outlet.
- the housing has a circular interior 5, which has a contour ring 7 and a rotor 9. takes, in the circumferential pool wing 8 receiving slots are introduced.
- the rotor 9 is set in rotation by means of a drive shaft 11, so that the vanes 8 move within the contour ring 7, the interior 5 of which is designed in such a way that two crescent-shaped free spaces, which are also referred to as forward spaces, are formed by the Be flown through. Between each two adjacent flights - seen in the circumferential direction - there are so-called flight egg cells, which become smaller and larger when the rotor rotates. This creates suction and pressure areas.
- the end faces of the contour ring 7 and the rotor 9 rest on sealing surfaces which are formed by pressure plates 17.1 and 17.2.
- the pressure plate 17.1 facing the front side is referred to as the pressure plate on the customer side and the other pressure plate 17.2 as the pressure plate on the pressure chamber side.
- the unit formed from the two pressure plates 17.1 and 17.2, the contour ring 7 and the rotor 9 thus lies in the interior 5 of the housing.
- At least the pressure-side pressure plate 17.1 facing the channel 3 or outlet is designed such that the hydraulic oil required by the egg cells is required through the pressure plate and into an outlet area formed between the pressure plate and the inside of the housing and from there to the consumer.
- the vane cell pump is constructed in such a way that the hydraulic oil in the pressure area reaches the underside of the wing lying in the interior of the rotor - the so-called lower wing area - and pressurizes it.
- the wings are pressed radially outward from the slots and thus lie sealingly on the inside of the contour ring.
- FIG. 2a or 2b The surfaces of the two pressure plates 17.1 and 17.2 facing the rotor 9 are shown in plan view in FIG. 2a or 2b. Two suction areas 21 and two kidney-shaped pressure areas 23 can be clearly seen in each case. Further inside, in the pressure plate-side pressure plate 17.2 according to FIG. 2a, an essentially annular groove 25 is provided for the lower wing areas. In contrast, four independent, essentially annular segment-shaped grooves 27 are formed in the pressure plate 17.1 according to FIG. 2b.
- FIG. 2a also shows that the kidney-shaped pressure areas 23 of the pressure plate-side pressure plate 17.2 merge into round channels 29. At least one or both channels 29 have a passage area, that is to say a cross-sectional area through which flow passes, which is less than 1/3 of the passage area of the pressure areas 23 of the pressure plate 17.1 on the forward side.
- FIG. 3 four different embodiments of the vane cell pump are shown in a highly simplified manner, with the different configurations of the pressure plates being essential. For this reason, the remaining details, in particular the rotor, blades, shaft, etc., are not shown.
- the vane cell pump according to FIG. 3a has both on the outlet or front side F of the rotor also on the opposite pressure chamber side D a pressure plate 17.1 or 17.2. Both pressure plates 17 lie close to the contour ring and rotor 51 and are thus intended to prevent leakage of hydraulic oil from the pressure areas.
- FIG. 3a The illustration of the pressure plate 17.1 on the outside in FIG. 3a shows two outlet channels 53.1 and 53.2, each of which establishes a fluid connection between a pressure area and a claims or outlet area 55.
- the pressure plate 17.2 on the pressure chamber side bears against the rotor 51 on the opposite side. It also has a channel 59 which establishes a fluid connection between a pressure region UD, which is lower in the figure, and a pressure chamber 61.
- This pressure chamber 61 is formed on the one hand by the pressure plate 17.2 on the pressure chamber side and on the other hand by the housing.
- openings 63a, 63b are also provided, which open into the respective lower wing area of the wings. This creates a fluid connection between the lower pressure area and at least one lower wing area.
- FIG. 3b differs from the one described above only in that the opening 63 opening into the lower wing area is not provided in the pressure plate 17.2 on the pressure chamber side but in the pressure plate 17.1 on the forward side.
- the channel 59 of the pressure plate 17.2 is not assigned to the lower pressure area but to the upper pressure area. However, this does not change the mode of operation of the two pressure plates after the start-up phase.
- FIG. 3c A third embodiment can be seen in FIG. 3c, which essentially corresponds to the embodiment shown in FIG. 3a.
- the pressure plate 17.2 on the pressure chamber side there is a small channel 65, which essentially serves for ventilation and creates a connection between the pressure chamber 61 and the upper pressure region.
- the cross section of the channel 65 is dimensioned so that its hydraulic resistance is very high, especially for cold hydraulic oil with a high viscosity. Resistance should be on everyone Case should be so large that in the cold start phase an oil flow from the lower pressure area via the pressure chamber 61 and the channel 65 to the upper pressure area, where the short circuit prevails, and then to the suction area is almost prevented.
- this ventilation duct 65 The function of this ventilation duct 65 is to allow air collecting in the upper region of the pressure chamber 61 to escape. Therefore, this ventilation duct 65 is to be assigned to the pressure range above. The venting of the pressure chamber 61 thus achieved makes it possible to reduce noise.
- FIG. 3d shows a further exemplary embodiment in which the pressure plate 17.2 on the pressure chamber side has two channels 71.
- the upper channel 71.1 connects the upper pressure area to the pressure chamber 61
- the lower channel 71.2 connects the lower pressure area to the pressure chamber 61.
- the cross sections of the two channels 71 are chosen so that the sum of the two individual hydraulic resistances for a viscous, cold oil is so large that almost no oil flow develops between the two pressure areas through the pressure chamber 61.
- FIGS. 3e and 3f show two further exemplary embodiments of how a hydraulic resistance can be implemented on the pressure chamber side, which for example, can be used instead of the small cross sections shown in Figure 3d.
- a web 77 can be provided on the housing, which limits the oil flow in the cold start phase between the lower and upper pressure range.
- this can of course also be formed on the pressure plate 17.2, as shown in FIG. 3f.
- other configurations of a hydraulic resistance are also conceivable.
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
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29610896U | 1996-06-21 | ||
DE29610896 | 1996-06-21 | ||
DE29612578U | 1996-07-20 | ||
DE29612578U DE29612578U1 (de) | 1996-06-21 | 1996-07-20 | Flügelzellenpumpe |
PCT/EP1997/003277 WO1997049915A1 (fr) | 1996-06-21 | 1997-06-23 | Pompe a ailettes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0906512A1 true EP0906512A1 (fr) | 1999-04-07 |
EP0906512B1 EP0906512B1 (fr) | 2002-10-23 |
Family
ID=26059109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97929260A Expired - Lifetime EP0906512B1 (fr) | 1996-06-21 | 1997-06-23 | Pompe a ailettes |
Country Status (5)
Country | Link |
---|---|
US (1) | US6152716A (fr) |
EP (1) | EP0906512B1 (fr) |
JP (1) | JP4206132B2 (fr) |
DE (1) | DE19780598D2 (fr) |
WO (1) | WO1997049915A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10027811A1 (de) * | 2000-06-05 | 2001-12-13 | Luk Fahrzeug Hydraulik | Pumpe |
GB2383611B (en) * | 2001-10-15 | 2005-04-06 | Luk Automobiltech Gmbh & Co Kg | Rotary vane-type machine |
ES2440771T3 (es) * | 2004-12-18 | 2014-01-30 | Ixetic Bad Homburg Gmbh | Bomba |
US7361001B2 (en) * | 2005-01-11 | 2008-04-22 | General Motors Corporation | Hydraulic vane pump |
CA2679776A1 (fr) * | 2008-10-08 | 2010-04-08 | Magna Powertrain Inc. | Pompe a ailettes, a commande directe de debit |
CN102203422B (zh) | 2008-11-07 | 2014-04-02 | Stt技术有限公司(麦格纳动力系有限公司和Shw有限公司的合资公司) | 完全潜没的一体式电动油泵 |
US8696326B2 (en) * | 2009-05-14 | 2014-04-15 | Magna Powertrain Inc. | Integrated electrical auxiliary oil pump |
WO2010136015A2 (fr) | 2009-05-27 | 2010-12-02 | Ixetic Bad Homburg Gmbh | Pompe, en particulier pompe à palettes |
JP5214644B2 (ja) * | 2010-02-09 | 2013-06-19 | ジヤトコ株式会社 | 自動変速機用オイルポンプの空気抜き構造 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3761206A (en) * | 1971-02-02 | 1973-09-25 | Shively Bros Inc | Fluid device |
US3787151A (en) * | 1972-07-07 | 1974-01-22 | Trw Inc | Stack-up assembly |
DE2735824C2 (de) * | 1977-08-09 | 1986-01-23 | Vickers Systems GmbH, 6380 Bad Homburg | Flügelzellenpumpe, insbesondere zur Lenkhilfe |
DE2835816C2 (de) * | 1978-08-16 | 1984-10-31 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | Drehkolbenpumpe |
JPS5928853A (ja) * | 1982-08-06 | 1984-02-15 | Mitsubishi Electric Corp | 回転電機 |
US4505654A (en) * | 1983-09-01 | 1985-03-19 | Vickers Incorporated | Rotary vane device with two pressure chambers for each vane |
DE3624173A1 (de) * | 1985-07-26 | 1987-01-29 | Zahnradfabrik Friedrichshafen | Fluegelzellenpumpe |
JPH01155096A (ja) * | 1987-12-10 | 1989-06-16 | Suzuki Motor Co Ltd | ベーン型回転圧縮機 |
US5147183A (en) * | 1991-03-11 | 1992-09-15 | Ford Motor Company | Rotary vane pump having enhanced cold start priming |
US5266018A (en) * | 1992-07-27 | 1993-11-30 | Vickers, Incorporated | Hydraulic vane pump with enhanced axial pressure balance and flow characteristics |
JPH09158868A (ja) * | 1995-12-08 | 1997-06-17 | Zexel Corp | ベーン型圧縮機 |
-
1997
- 1997-06-23 EP EP97929260A patent/EP0906512B1/fr not_active Expired - Lifetime
- 1997-06-23 JP JP50233398A patent/JP4206132B2/ja not_active Expired - Fee Related
- 1997-06-23 WO PCT/EP1997/003277 patent/WO1997049915A1/fr active IP Right Grant
- 1997-06-23 DE DE19780598T patent/DE19780598D2/de not_active Expired - Fee Related
- 1997-06-23 US US09/202,573 patent/US6152716A/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9749915A1 * |
Also Published As
Publication number | Publication date |
---|---|
US6152716A (en) | 2000-11-28 |
JP2000512709A (ja) | 2000-09-26 |
JP4206132B2 (ja) | 2009-01-07 |
WO1997049915A1 (fr) | 1997-12-31 |
EP0906512B1 (fr) | 2002-10-23 |
DE19780598D2 (de) | 1999-04-01 |
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