EP0763659B1 - Pumpe - Google Patents

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Publication number
EP0763659B1
EP0763659B1 EP96113888A EP96113888A EP0763659B1 EP 0763659 B1 EP0763659 B1 EP 0763659B1 EP 96113888 A EP96113888 A EP 96113888A EP 96113888 A EP96113888 A EP 96113888A EP 0763659 B1 EP0763659 B1 EP 0763659B1
Authority
EP
European Patent Office
Prior art keywords
pump
suction
fluid
section
chamber
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.)
Revoked
Application number
EP96113888A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0763659A2 (de
EP0763659A3 (de
Inventor
Ivo Agner
Bernd Denfeld
Thomas Dr. Nied-Menninger
Gerhard Dr. Overdiek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LuK Fahrzeug Hydraulik GmbH and Co KG
Original Assignee
LuK Fahrzeug Hydraulik GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7772181&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0763659(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by LuK Fahrzeug Hydraulik GmbH and Co KG filed Critical LuK Fahrzeug Hydraulik GmbH and Co KG
Publication of EP0763659A2 publication Critical patent/EP0763659A2/de
Publication of EP0763659A3 publication Critical patent/EP0763659A3/de
Application granted granted Critical
Publication of EP0763659B1 publication Critical patent/EP0763659B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • F04C15/062—Arrangements for supercharging the working space

Definitions

  • the invention relates to pumps namely roller cell pumps, Vane pumps and gear pumps according to Preamble of claim 1.
  • the pump is proposed the features mentioned in claim 1 having. Because of the suction area of the pumps by returned from a consumer, under Pressurized fluid is charged, that is, in that the suction area has a fluid under it If excess pressure is supplied, cavitation effects can occur be safely avoided. That from the consumer returned fluid is through a return port led into a pressure room, which one has outlet opening to the suction chamber of the pump. The cross section of this outlet is smaller than that of the return port leading the fluid. This configuration leads to the situation Fluid accelerates as it passes through the outlet. That with great speed in the Fluid entering the suction chamber can therefore be an existing one Carry fluid and the suction area of the Feed the pump.
  • an embodiment is preferred the pump, in which a wall section is provided which is the suction area of the pump from the suction port demarcates.
  • a wall section is provided which is the suction area of the pump from the suction port demarcates.
  • the invention relates to gear pumps, roller cell pumps and vane pumps.
  • vane pump is described purely by way of example. However, it should be noted that those described here Charging the suction area of the vane pump also for roller cell and gear pumps can be used.
  • the vane pump 1 shown in FIG. 1 has a rotor 3 in its peripheral wall radially extending slots 5 are introduced, the take up radially movable wing 7.
  • the rotor 3 is rotatably arranged in a contour ring 9; whose inner surface 11 is designed that two opposite one another, identical here trained delivery rooms 13 and 15 are formed, which are essentially crescent-shaped. at a rotation of the rotor 3 inside the contour ring 9 retract the wings in the slots and from, so that in the delivery rooms 13 and 15 suction and Pressure areas are formed. With a turn of the rotor 3 here are two opposite Suction areas 17 and 19 and two opposite Pressure areas 21 and 23, whose in the Figure 1 specified arrangement with a rotation of the Counterclockwise.
  • the contour ring 9 is inserted into a pump housing 25, inside which a suction port 27 opens.
  • a connection is connected to the suction connection 27, that leads to a tank in which returned to the consumer, under one at most low pressure fluid introduced becomes.
  • the suction connection is in connection with one that practically completely surrounds the contour ring 9 Suction chamber 29, which with the suction areas 17th and 19 the pump is in fluid communication.
  • the Suction chamber 29 is at his, the suction port 27 facing away Ended over a sealing bead 31. Beyond the sealing bead Pressure chamber 33, on the one hand from the housing 25 and on the other hand is delimited by the contour ring 9 and which has an outlet 35 to the suction chamber 29.
  • a return connection 37 opens into the pressure chamber 33, through which a pressurized fluid from a Consumer reaches vane pump 1.
  • the Cross-section of the return connection is essential larger than that of outlet 35.
  • the vane pump 1 has an inside Contour rings 9 rotatably mounted rotor 3.
  • the Suction areas 17 and 19 of the two pump sections are, like their print area 21 and 23, dashed indicated. For better clarity the wings 7 were not shown here.
  • the wall section 39 results an optimal mixing of the two fluids, so that the energy of the pressurized by the Return port 37 delivered fluids optimal transfers to the fluid in the suction port 27.
  • the outlets 35a and 35b are arranged and trained that liquid emerging from these not on the opposite boundary wall 41 of the suction connection bounces, which leads to energy losses would lead.
  • the boundary wall 41 is part of a pipe connection running perpendicular to the picture, that leads to the tank.
  • the wall section 39 also narrows the suction port 27 in the transition area to the suction chamber 29, so that here quasi a mixing chamber is formed. Through the Constriction accelerates the fluid flowing through it. After the end of wall section 39 the cross section of the suction chamber 29 increases, so here due to the energy conversion Boost pressure is built up on the basis of which Fluid with an overpressure in the suction areas 17 and 19 is introduced.
  • Vane pump 1 is characterized in that the wall section 39 receives the rotor 3 Interior of the pump opposite the return connection 37 and delimited from the suction port 27, so that when the vane pump 1 is at a standstill Idling is safely avoided.
  • the rotor is so even after the pump has been shut down the fluid is immersed and is therefore characterized by an optimal start-up behavior. In other words, it is ensured that the vane pump 1 does not run empty at start and immediately starts pumping the fluid.
  • Essential is, however, that the connection between the suction connection 27 and suction chamber 29 as well as the one with the working pressure side the vane pump 1 connected Pressure outlet of the pressure kidneys 21 and 23 so far overhead is arranged that an oil collection space is created. The oil present there improves the starting properties the pump.
  • the pumps described with reference to Figures 1 and 2 are characterized by a very simple structure out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP96113888A 1995-09-14 1996-08-30 Pumpe Revoked EP0763659B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19534117 1995-09-14
DE19534117 1995-09-14

Publications (3)

Publication Number Publication Date
EP0763659A2 EP0763659A2 (de) 1997-03-19
EP0763659A3 EP0763659A3 (de) 1998-04-29
EP0763659B1 true EP0763659B1 (de) 2002-12-18

Family

ID=7772181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96113888A Revoked EP0763659B1 (de) 1995-09-14 1996-08-30 Pumpe

Country Status (3)

Country Link
EP (1) EP0763659B1 (ja)
JP (1) JP4044980B2 (ja)
DE (1) DE59609992D1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012100702A1 (de) 2012-01-30 2013-08-01 Zf Lenksysteme Gmbh Pumpe, insbesondere Flügelzellenpumpe für eine Hilfskraftlenkung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002010591A2 (de) * 2000-07-27 2002-02-07 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Pumpe
JP2007278258A (ja) * 2006-04-12 2007-10-25 Kayaba Ind Co Ltd ベーンポンプ
US10753358B2 (en) 2015-09-29 2020-08-25 Aisin Aw Co., Ltd. Power transmission apparatus
WO2018198370A1 (ja) * 2017-04-28 2018-11-01 株式会社ミクニ ベーンポンプ

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983226A (en) * 1953-01-16 1961-05-09 William T Livermore Injection filled liquid pump
JPS55160191A (en) * 1979-05-31 1980-12-12 Toyoda Mach Works Ltd Pump system
JPS5677591A (en) * 1979-11-28 1981-06-25 Toyoda Mach Works Ltd Pump device
JP2822619B2 (ja) * 1990-06-26 1998-11-11 株式会社デンソー 液圧システム
DE4138516A1 (de) * 1991-11-23 1993-05-27 Luk Fahrzeug Hydraulik Pumpe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012100702A1 (de) 2012-01-30 2013-08-01 Zf Lenksysteme Gmbh Pumpe, insbesondere Flügelzellenpumpe für eine Hilfskraftlenkung

Also Published As

Publication number Publication date
DE59609992D1 (de) 2003-01-30
EP0763659A2 (de) 1997-03-19
JP4044980B2 (ja) 2008-02-06
EP0763659A3 (de) 1998-04-29
JPH09112459A (ja) 1997-05-02

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