IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0296369
(2001-06-01)
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우선권정보 |
DE-0027990 (2000-06-08) |
국제출원번호 |
PCT/EP01/06282
(2001-06-01)
|
국제공개번호 |
WO01/94791
(2001-12-13)
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발명자
/ 주소 |
|
출원인 / 주소 |
- LuK Fahrzeug-Hydraulik GmbH & Co. KG
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대리인 / 주소 |
Morriss O'Bryant Compagni, P.C.
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인용정보 |
피인용 횟수 :
16 인용 특허 :
4 |
초록
▼
The invention relates to a pump with a pump chamber with a rotary-driven pump element mounted, at least one suction and at least one pressure connection opening into the pump chamber and with circulating pumping cells whose volume can be changed, which are connected with the suction or pressure conn
The invention relates to a pump with a pump chamber with a rotary-driven pump element mounted, at least one suction and at least one pressure connection opening into the pump chamber and with circulating pumping cells whose volume can be changed, which are connected with the suction or pressure connection depending on the rotary position of the pump element. A hydraulic intermediate capacity is provided that can be stressed with the pumping medium pressure present at the pressure connection by way of its first connection and that, by way of its second connection, can be stressed with the pumping medium pressure present at the pressure connection depending on the rotary position of the pump element or it can be connected with a pumping cell that has no direct connection to the pressure connection.
대표청구항
▼
1. A pump having a pump chamber with a rotary-driven pump element for generating a pumping medium pressure, at least one suction connection and at least one pressure connection opening into the pump chamber and with circulating pumping cells whose volume can be changed, which are connected with the
1. A pump having a pump chamber with a rotary-driven pump element for generating a pumping medium pressure, at least one suction connection and at least one pressure connection opening into the pump chamber and with circulating pumping cells whose volume can be changed, which are connected with the suction connection or pressure connection depending on the rotary position of the pump element, and further comprising:a hydraulic intermediate capacity having a first connection and a second connection, wherein one of said first connection or said second connection of the hydraulic intermediate capacity is connected with a pumping cell that intermittently has no direct connection to the pressure connection when said rotary-driven pump element occludes one of said first or second connections to provide a stressing of said hydraulic intermediate capacity. 2. A pump according to claim 1, wherein the hydraulic intermediate capacity has about twice the average volume of one pumping cell. 3. A pump according to claim 1, wherein a hydraulic resistance lies in the first connection and/or second connection of the intermediate capacity. 4. A pump according to claim 1, wherein the pump comprises at least one pressure plate, a pump housing and a pump chamber ring having facing sides and wherein the pump chamber is delimited by the pump chamber ring and at least one pressure plate lying on one of the face sides of the pump chamber ring and/or by the pump housing. 5. A pump according to claim 1, wherein the hydraulic intermediate capacity is formed of at least two partial capacities. 6. A pump according to claim 5, wherein at least two partial capacities are connected in series. 7. A pump according to claim 6, wherein a hydraulic resistance is positioned between the partial capacities connected in series. 8. A pump with a pump chamber and a rotary-driven pump element mounted therewithin, at least one suction connection and at least one pressure connection opening into the pump chamber and with circulating pumping cells whose volume can be changed, which are connected with the suction or pressure connection depending on the rotary position of the pump element, comprising:a hydraulic intermediate capacity having a first connection and a second connection, wherein the hydraulic intermediate capacity can be stressed by the pumping medium pressure by way of one of the first connection or the second connection being in fluid communication with the pressure connection while the other of said first connection or said second connection is in fluid communication with an adjacent pumping cell and is intermittently occluded by said rotary-driven pump element. 9. A pump according to claim 8, wherein the pump comprises at least one pressure plate, a pump housing and a pump chamber ring having facing sides and wherein the pump chamber is delimited by the pump chamber ring and at least one pressure plate lying on one of the face sides of the pump chamber ring and/or by the pump housing. 10. A pump according to claim 8, wherein the hydraulic intermediate capacity has about twice the average volume of one pumping cell. 11. A pump according to claim 10, wherein a hydraulic resistance lies in the first connection and/or second connection of the intermediate capacity. 12. A pump according to claim 8, wherein the hydraulic intermediate capacity is formed of at least two partial capacities. 13. A pump according to claim 12, wherein at least two partial capacities are connected in series. 14. A pump according to claim 13, wherein a hydraulic resistance is positioned between the partial capacities connected in series. 15. A pump having a pump chamber with a rotary-driven pump element for generating a pumping medium pressure, at least one suction connection and at least one pressure connection opening into the pump chamber and with circulating pumping cells whose volume can be changed, which are connected with the suction connection or pressure connection depending on t he rotary position of the pump element, and each pumping cell being separated from an adjacent pumping cell by a vane, the pump further comprising:a hydraulic intermediate capacity having a first connection positioned in fluid communication with the pressure connection and a second connection positioned to be intermittently occluded by a vane separating adjacent pumping cells, depending on the rotary position of the pump element, wherein the hydraulic intermediate capacity can be stressed by the pumping medium pressure from the area of a first pumping cell via the first connection and while a second pumping cell adjacent said first pumping cell is either intermittently connected to the pressure of the pumping medium at the pressure connection via the second connection when the vane separating the pumping cells is not positioned to occlude the second connection or has no direct connection to the pressure connection when the vane is positioned during the rotation of the pump element to occlude the second connection. 16. A pump according to claim 15, wherein the second connection of the hydraulic intermediate capacity opens into the pump chamber and is brushed over by pump elements delimiting the pumping cell. 17. A pump according to claim 15, wherein the hydraulic intermediate capacity has about twice the average volume of one pumping cell. 18. A pump according to claim 15, wherein a hydraulic resistance lies in the first connection and/or second connection of the intermediate capacity. 19. A pump according to claim 15, wherein the pump comprises at least one pressure plate, a pump housing and a pump chamber ring having facing sides and wherein the pump chamber is delimited by the pump chamber ring and at least one pressure plate lying on either one of the face sides of the pump chamber ring and/or by the pump housing. 20. A pump according to claim 15, wherein the pump chamber is defined by one or more walls and wherein the hydraulic intermediate capacity is formed in one of the walls opposite to and/or turned away from the pump chamber. 21. A pump according to claim 15, wherein the pump has a wall lying inside of the pump chamber and a wall turned away from the pump chamber and wherein a hydraulic resistance lies between the wall lying inside of the pump chamber and the wall turned away from the pump chamber. 22. A pump according to claim 15, wherein the pump has a plurality of pressure areas and wherein the hydraulic intermediate capacity is sealed from other all pressure areas except the pressure connection. 23. A pump according to claim 15, wherein the pump comprises several suction and pressure connections, and a hydraulic intermediate capacity for each pressure connection. 24. A pump according to claim 15, wherein the pump is a vane-cell pump and the rotary-driven pump element is formed with a plurality of vanes. 25. A pump according to claim 15, wherein the pump comprises a housing and at least one pressure plate and wherein the at least one pressure plate is supported against the housing with a spacer. 26. A pump according to claim 15, wherein an opening expansion is formed on at least one of the pressure connection and the suction connection. 27. A pump according to claim 15, wherein an opening expansion is formed on both the pressure connection and the suction connection. 28. A pump according to claim 15, further comprising a pressure plate, a pump chamber ring, a pump housing and a hydraulic resistance, wherein the hydraulic resistance lies in at least one of the pressure and the pump housing, and wherein the hydraulic intermediate capacity lies in at least one of the pump housing and the pressure plate. 29. A pump according to claim 15, further comprising a hydraulic resistance that lies in the first connection of the hydraulic intermediate capacity. 30. A pump according to claim 15, further comprising a hydraulic resistance that lies in the second connection of the hydraulic intermediate capacity. 31. A pump accordi ng to claim 15, wherein the hydraulic intermediate capacity is formed of at least two partial capacities. 32. A pump according to claim 31, wherein at least two partial capacities are connected in series. 33. A pump according to claim 32, wherein a hydraulic resistance is mounted between the partial capacities connected in series. 34. A pump according to claim 15, further comprising a hydraulic resistance positioned in said hydraulic intermediate capacity. 35. A pump according to claim 34, wherein the pump further comprises a pressure plate, a pump chamber ring, and a pump housing, wherein the hydraulic resistance lies in at least one of the pressure plate and pump housing. 36. A pump according to claim 15, wherein the pump has a pump chamber wall and wherein the second connection of the hydraulic intermediate capacity that opens into the pump chamber wall. 37. A pump according to claim 36, wherein the second connection has a circular cross section. 38. A pump according to claim 36, wherein the second connection has an opening that is circular. 39. A pump according to claim 36, wherein the opening area of the second connection is at least partially expanded.
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