EP1642032A1 - Pumpe - Google Patents
PumpeInfo
- Publication number
- EP1642032A1 EP1642032A1 EP04738715A EP04738715A EP1642032A1 EP 1642032 A1 EP1642032 A1 EP 1642032A1 EP 04738715 A EP04738715 A EP 04738715A EP 04738715 A EP04738715 A EP 04738715A EP 1642032 A1 EP1642032 A1 EP 1642032A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- area
- pump
- kidneys
- cross
- 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
- 210000003734 kidney Anatomy 0.000 claims description 56
- 230000005540 biological transmission Effects 0.000 claims description 9
- 210000004027 cell Anatomy 0.000 description 32
- 230000006835 compression Effects 0.000 description 12
- 238000007906 compression Methods 0.000 description 12
- 230000006870 function Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009795 derivation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 210000003934 vacuole Anatomy 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008571 general function Effects 0.000 description 1
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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
- F04C15/0049—Equalization of pressure pulses
-
- 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
- F04C2250/00—Geometry
- F04C2250/10—Geometry of the inlet or outlet
- F04C2250/102—Geometry of the inlet or outlet of the outlet
Definitions
- the invention relates to a pump, such as a vane pump or roller cell pump, in particular for transmission oil for automatic transmissions, with a stroke contour ring, with a rotor with radial slots in which vanes or rollers are arranged so as to be radially displaceable, with side plates or side walls of the housing which axially limit the rotation group laterally, wherein discharge openings, so-called pressure kidneys, are arranged in the side plates or side walls of the housing in the printing area.
- a pump such as a vane pump or roller cell pump, in particular for transmission oil for automatic transmissions, with a stroke contour ring, with a rotor with radial slots in which vanes or rollers are arranged so as to be radially displaceable, with side plates or side walls of the housing which axially limit the rotation group laterally, wherein discharge openings, so-called pressure kidneys, are arranged in the side plates or side walls of the housing in the printing area.
- Transmission pumps for automatic transmissions usually work with foamed transmission oil and have a suction filter. Due to the undissolved air in the oil, air can accumulate in the filter. Many small to large air bubbles come together here. If such an air bubble is now sucked in, there will be crackling noises.
- the air bubble has the effect, for example, that a large part of the cell in a vane pump is filled with air and that the cell does not have enough time as part of the pressure compensation process controlled by pressure compensation notches or intermediate capacities (see DE 10027990), which are arranged in the so-called pre-compression area Fill oil.
- the pressure equalization process is now completed relatively suddenly when the large pressure kidneys of the standard pumps are opened. This quickness creates very high pressure peaks, which are acoustically reflected in the crackling noise.
- the noise when the pump works in cavitation for example at low oil temperatures.
- the effect of the cavitation vacuole is comparable to that of a large air bubble.
- the angle of rotation for the pressure compensation processes in the pre-compression area is not sufficient to fill the cell in a standard pump.
- a pump such as a vane pump or a roller cell pump, in particular for transmission oil for automatic transmissions, with a stroke contour ring, with a rotor with radial slots in which vanes are arranged in a radially displaceable manner, with side plates or side walls of the housing which delimit the rotation group axially laterally, whereby discharge openings, so-called pressure kidneys, are arranged in the side plates or housing side walls in the pressure area, the sum of the cross-sectional areas of both pressure kidneys of a pressure area (a flood) of the pump, based on one and the same cell, i.e. within the area of a cell above which Angle of rotation is significantly reduced compared to standard pumps.
- a pump such as a vane pump or a roller cell pump, in particular for transmission oil for automatic transmissions, with a stroke contour ring, with a rotor with radial slots in which vanes are arranged in a radially displaceable manner, with side plates or side walls of the housing which delimit
- a pump is preferred in which the sum of the cross-sectional areas of both pressure kidneys of a pressure area (a flood) of the pump, based on one and the same cell, ie within the area of a cell, both with single-stroke (single-flow) and with double-stroke, that is, double-flow vane pumps or roller cell pumps in total do not exceed 40 mm 2 per cm 3 cell volume over a rotation angle of 20 °.
- This dimensioning has the advantage that an acceptable noise behavior can be achieved for high-pressure gear pumps with operating pressures above 20 bar for the aforementioned operating states.
- a pump according to the invention is characterized in that the sum of the cross-sectional areas of both pressure kidneys of a pressure area (a flood) of the pump, based on one and the same cell, ie within the area of a cell, increases essentially linearly or slightly progressively over the angle of rotation.
- a pump is preferred in which the cross-sectional areas of both pressure kidneys of a pressure area, that is to say the front and rear pressure kidneys, are of the same size, that is to say arranged symmetrically. This has the advantage that the axially acting pressure surfaces on the rotor are balanced.
- Another pump according to the invention is characterized in that the cross-sectional areas of both pressure kidneys of a pressure area are not of equal size, that is to say are arranged asymmetrically.
- a pump is also preferred in which the cross-sectional area of the pressure kidney of this pressure area, which is connected to the pressure outlet, is larger than z.
- B. the opposite Overlying cross-sectional area of the pressure kidney of this pressure area, which is not connected to the pressure outlet (thus has no through opening and thus represents a so-called shadow port). This has the advantage that the pressure kidney connected to the pressure outlet generates less resistance and thus less losses when the fluid is ejected from the cell to be compressed.
- the opening behavior can therefore also be designed asymmetrically, i.e., the pressure kidney on one side can be opened a little faster than on the other side, based on the same pressure range. This is advantageous if the pressure kidney is only connected directly to the pressure outlet on one side plate in order to achieve a large cross-sectional area on this side in particular.
- a pump is further preferred in which the area ratio of the pressure kidney of a pressure area, which is connected to the pressure outlet, to the pressure kidney of the same pressure area, which is not connected to the pressure outlet, is less than or equal to 70 to 30 if the pressure kidneys are above one Angle of rotation of 20 ° are open.
- a pump according to the invention is characterized in that the cross-sectional areas of the (gently opening) pressure kidneys are generated by covering the pressure kidney edges of the side plates with the cam ring contour.
- a pump is also preferred in which the cross-sectional areas of the (gently opening) pressure kidneys are produced by covering the pressure kidney edges of the side plates with the rotor. Furthermore, a pump is preferred in which the cross-sectional areas of the (gently opening) pressure kidneys are created by creating continuously expanding pressure kidneys on the side plates or side walls or on the contour ring. There is also the possibility of reducing the area of the pressure kidney areas by means of a large pressure notch, a flattening or the like. However, since this has to be done in the discharge area for multi-stroke vane pumps for reasons of space, this area is also directly lost as the discharge area and generates additional pressure losses at higher speeds.
- FIG. 1 shows two top views of a rotating group with the pressure kidneys according to the invention.
- Figure 2 shows two views of a rotary group with pressure kidneys of a standard pump.
- FIG. 3 shows a curve with the derivation of the cell volume according to the angle of rotation over the angle of rotation and the corresponding angular ranges of the pressure kidney according to the invention.
- Figure 1 shows a top view of a rotating group with the pressure kidney according to the invention from both sides.
- a rotor 3 is rotatably arranged within a stroke contour ring 1.
- the rotor 3 has a plurality of radially displaceable vanes 5 which slide in vane slots 7 in the rotor.
- the direction of rotation of the rotor for the two views is indicated by an arrow of rotation 9.
- Figure 1b z. B. result in the direction of rotation 9 enlarging cells in the area 11, which 12 can suck oil from the suction kidney there.
- the cross-sectional area 13 according to the invention of a pressure kidney of a pressure area (a flood) of the pump, based on one and the same cell, that is to say within the area of a cell, is shown, which is partly by a cavity 15 in the side plate behind the stroke contour ring (1) continues and has a constant or slightly increasing width over the rotation angle.
- a pressure compensation notch 17 is arranged in the pre-compression area, which already allows a certain amount of pre-compression in the large circle area before the cross-sectional area 13 of a pressure kidney of a pressure area (a flood) of the pump, based on one and the same cell, i.e. within the area of a cell, is opened to the outlet.
- the pressure kidneys begin where, or a little later, where the leading wing of the cell under consideration with its opening edge leaves the pre-compression area (great circle area).
- the position of the pressure kidneys and thus the discharge area can be advanced in the direction of rotation compared to a standard pump.
- the ejection area can be formed in the stroke contour ring (1) by a parabolic contour function. The general function of such a vane pump with its suction and discharge processes is known. In the view in Figure 1a the other side of the rotation group is shown.
- the cross-sectional area 13 of a pressure kidney of a pressure area (a flood) of the pump is represented with a partial area 15 by a hollow in the side plate behind the stroke contour ring.
- the pre-compression notch 17 is omitted on this pressure plate side.
- the curve 20 thus represents the derivation of the cell volume according to the angle of rotation, plotted against the angle of rotation.
- the area 22 of the curve 20 thus represents the above-mentioned function in the suction area of the vane pump. It extends to point 24, and there the function goes in the pre-compression area 26.
- the pre-compression area 26 is arranged in the so-called large circle area of the stroke contour.
- the function then passes from the pre-compression area to the discharge area 30 of the vane pump. From this point 38, the connection of the cell with the pressure kidney is established up to point 32.
- the discharge area 30 extends up to point 32. Since this is a double-stroke (double-flow) pump, the stroke contour is repeated and thus also the function mentioned above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Fluid-Driven Valves (AREA)
- Eye Examination Apparatus (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10329288 | 2003-06-30 | ||
PCT/DE2004/001264 WO2005001291A1 (de) | 2003-06-30 | 2004-06-18 | Pumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1642032A1 true EP1642032A1 (de) | 2006-04-05 |
EP1642032B1 EP1642032B1 (de) | 2010-10-06 |
Family
ID=33521182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04738715A Expired - Lifetime EP1642032B1 (de) | 2003-06-30 | 2004-06-18 | Pumpe |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1642032B1 (de) |
AT (1) | ATE483913T1 (de) |
DE (2) | DE502004011746D1 (de) |
WO (1) | WO2005001291A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015201961A1 (de) | 2015-02-04 | 2016-08-04 | Volkswagen Aktiengesellschaft | Verfahren zum Betrieb einer Verdrängerpumpe sowie eine hierfür bestimmte Verdrängerpumpe |
DE102016205686A1 (de) * | 2016-04-06 | 2017-10-12 | Zf Friedrichshafen Ag | Flügelzellenpumpe |
DE102016205687A1 (de) * | 2016-04-06 | 2017-10-12 | Zf Friedrichshafen Ag | Flügelzellenpumpe |
DE102016111770A1 (de) * | 2016-06-28 | 2017-12-28 | Robert Bosch Gmbh | Verdrängerpumpe, Verfahren zum Betreiben einer Verdrängerpumpe und Getriebe für ein Kraftfahrzeug |
DE102016111772A1 (de) * | 2016-06-28 | 2017-12-28 | Robert Bosch Automotive Steering Gmbh | Verdrängerpumpe, Verfahren zum Betreiben einer Verdrängerpumpe und Getriebe für ein Kraftfahrzeug |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2291856A (en) * | 1938-12-21 | 1942-08-04 | Wood John Mfg Co Inc | Rotary pump |
JPS61108884A (ja) * | 1984-10-31 | 1986-05-27 | Aisin Seiki Co Ltd | トロコイド型オイルポンプ |
DE19626206A1 (de) * | 1996-06-29 | 1998-01-08 | Luk Fahrzeug Hydraulik | Flügelzellenpumpe |
JPH1089266A (ja) * | 1996-09-17 | 1998-04-07 | Toyoda Mach Works Ltd | ベーンポンプ |
DE10027990A1 (de) | 2000-06-08 | 2001-12-20 | Luk Fahrzeug Hydraulik | Pumpe |
-
2004
- 2004-06-18 AT AT04738715T patent/ATE483913T1/de active
- 2004-06-18 EP EP04738715A patent/EP1642032B1/de not_active Expired - Lifetime
- 2004-06-18 WO PCT/DE2004/001264 patent/WO2005001291A1/de active Application Filing
- 2004-06-18 DE DE502004011746T patent/DE502004011746D1/de not_active Expired - Lifetime
- 2004-06-24 DE DE102004030473.4A patent/DE102004030473B4/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2005001291A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2005001291A1 (de) | 2005-01-06 |
DE102004030473A1 (de) | 2005-01-20 |
DE502004011746D1 (de) | 2010-11-18 |
DE102004030473B4 (de) | 2016-01-14 |
ATE483913T1 (de) | 2010-10-15 |
EP1642032B1 (de) | 2010-10-06 |
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