EP1934478B1 - Pompe a palettes coulissantes - Google Patents

Pompe a palettes coulissantes Download PDF

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Publication number
EP1934478B1
EP1934478B1 EP06776762A EP06776762A EP1934478B1 EP 1934478 B1 EP1934478 B1 EP 1934478B1 EP 06776762 A EP06776762 A EP 06776762A EP 06776762 A EP06776762 A EP 06776762A EP 1934478 B1 EP1934478 B1 EP 1934478B1
Authority
EP
European Patent Office
Prior art keywords
stator
cell pump
vane cell
pump according
clamp
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 - Fee Related
Application number
EP06776762A
Other languages
German (de)
English (en)
Other versions
EP1934478A1 (fr
Inventor
Willi Schneider
Torsten Helle
Dirk Ehrenfeld
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.)
Joma Hydromechanic GmbH
Original Assignee
Joma Hydromechanic GmbH
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
Priority claimed from DE200510048602 external-priority patent/DE102005048602B4/de
Priority claimed from DE102006021251A external-priority patent/DE102006021251B4/de
Application filed by Joma Hydromechanic GmbH filed Critical Joma Hydromechanic GmbH
Publication of EP1934478A1 publication Critical patent/EP1934478A1/fr
Application granted granted Critical
Publication of EP1934478B1 publication Critical patent/EP1934478B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • F04C14/223Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam
    • F04C14/226Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam by pivoting the cam around an eccentric axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/30Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/30Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C2/3445Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the vanes having the form of rollers, slippers or the like

Claims (9)

  1. Pompe multicellulaire à palettes (12), comprenant un rotor extérieur (8), un rotor intérieur (16) et une pluralité de palettes (20) qui sont logées de façon radialement mobile dans des fentes (18) substantiellement radiales dans le rotor intérieur (16) et fixées de façon pivotante sur le rotor extérieur (8), et le rotor extérieur (8) coulisse le long de la face circonférentielle intérieure (26) d'un stator (28), dans laquelle l'axe (54) du stator (28) et l'axe (56) du rotor intérieur (16) présentent un décalage (60) l'un par rapport à l'autre, et le stator (28) est réglable par rapport au rotor intérieur (16) dans la direction radiale, et le décalage (60) peut ainsi être modifié, et le stator (28) est entouré en partie par un étrier (34) logé dans le boîtier (10) de la pompe multicellulaire à palettes (12) dans un palier de pivotement (32), caractérisée en ce que l'étrier (34) présente des deux côtés du palier de pivotement (32) des branches d'étrier (36 et 38) faisant saillie, et les branches d'étrier (36 et 38) entourent respectivement en partie le stator (28).
  2. Pompe multicellulaire à palettes selon la revendication 1, caractérisée en ce que l'étrier (34) avec ses branches d'étrier (36 et 38) est réalisé en forme de fourche.
  3. Pompe multicellulaire à palettes selon la revendication 1 ou 2, caractérisée en ce que les deux branches d'étrier (36 et 38) peuvent être amenées à pivoter de façon hydraulique ou pneumatique.
  4. Pompe multicellulaire à palettes selon l'une quelconque des revendications précédentes, caractérisée en ce qu'une branche d'étrier peut être décalée au moyen d'un ressort (58).
  5. Pompe multicellulaire à palettes selon l'une quelconque des revendications précédentes, caractérisée en ce que le stator (28) peut être réglé au moyen d'un ressort (58).
  6. Pompe multicellulaire à palettes selon la revendication 4 ou 5, caractérisée en ce que le ressort (58) est précontraint.
  7. Pompe multicellulaire à palettes selon l'une quelconque des revendications 4 à 6, caractérisée en ce que la branche d'étrier et/ou le stator (28) sont réglables au moyen du ressort (58) en direction d'un débit maximal de la pompe multicellulaire à palettes (12).
  8. Pompe multicellulaire à palettes selon l'une quelconque des revendications précédentes, caractérisée en ce que les extrémités libres (40 et 42) des branches d'étrier (36 et 38) présentent des faces de piston (44) pour un milieu sous pression.
  9. Pompe multicellulaire à palettes selon la revendication 8, caractérisée en ce que les faces de piston (44) sont logées de façon mobile dans des guidages (50) prévus dans le boîtier (10) de la pompe multicellulaire à palettes.
EP06776762A 2005-10-06 2006-08-11 Pompe a palettes coulissantes Expired - Fee Related EP1934478B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200510048602 DE102005048602B4 (de) 2005-10-06 2005-10-06 Flügelzellenmaschine, insbesondere Flügelzellenpumpe
DE102006021251A DE102006021251B4 (de) 2005-10-06 2006-04-28 Flügelzellenpumpe
PCT/EP2006/007943 WO2007039012A1 (fr) 2005-10-06 2006-08-11 Pompe a palettes coulissantes

Publications (2)

Publication Number Publication Date
EP1934478A1 EP1934478A1 (fr) 2008-06-25
EP1934478B1 true EP1934478B1 (fr) 2009-01-28

Family

ID=37398813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06776762A Expired - Fee Related EP1934478B1 (fr) 2005-10-06 2006-08-11 Pompe a palettes coulissantes

Country Status (6)

Country Link
US (1) US8210836B2 (fr)
EP (1) EP1934478B1 (fr)
JP (1) JP4795437B2 (fr)
KR (1) KR101131290B1 (fr)
DE (1) DE502006002760D1 (fr)
WO (1) WO2007039012A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102943756A (zh) * 2012-10-25 2013-02-27 王德忠 一种叶片不与转子侧壁产生摩擦的叶片泵或马达

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1934478B1 (fr) 2005-10-06 2009-01-28 Joma-Hydromechanic GmbH Pompe a palettes coulissantes
US7736134B2 (en) * 2006-10-10 2010-06-15 Joma-Polytec Kunststofftechnik Gmbh Vane machine, in particular vane pump
EP3051134B1 (fr) 2013-09-24 2018-05-30 Aisin Seiki Kabushiki Kaisha Pompe à huile
KR101735084B1 (ko) 2014-06-20 2017-05-12 반도 카가쿠 가부시키가이샤 전동벨트 및 이를 구비한 벨트 전동장치
KR101909783B1 (ko) 2016-02-11 2018-10-18 김경수 외부 케이싱과 동기하여 회전하는 회전형 베인 펌프 또는 진공 펌프
US11242852B2 (en) 2019-04-01 2022-02-08 GM Global Technology Operations LLC Variable displacement oil pump slide with bow spring

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142275A (en) * 1937-08-24 1939-01-03 Eclipse Aviat Corp Fluid pump
US2250947A (en) 1938-06-17 1941-07-29 Jr Albert Guy Carpenter Pump
US2628567A (en) * 1946-12-12 1953-02-17 Houdaille Hershey Corp Reversible variable capacity fluid pump
US2952215A (en) * 1949-12-12 1960-09-13 Hydro Aire Inc Variable delivery high speed and pressure vane pump
DE1403748C3 (de) 1961-10-13 1974-08-29 Breinlich, Richard, Dr., 7120 Bietigheim Hydraulische Radialkolbenmaschine
US3650180A (en) * 1969-09-30 1972-03-21 Arinc Res Corp Compound hydrostatic bearing for rotary radial piston hydraulic machines
US3637332A (en) * 1970-07-28 1972-01-25 United Aircraft Corp Variable compression means for a rotary engine
US3744939A (en) * 1971-06-25 1973-07-10 Chandler Evans Inc Variable displacement vane pump
JPS5762986A (en) 1980-10-02 1982-04-16 Nissan Motor Co Ltd Variable displacement type vane pump
JPS58204986A (ja) * 1982-05-26 1983-11-29 Nissan Motor Co Ltd 可変容量型ロ−タリベ−ンポンプ
DE3542776A1 (de) * 1985-12-04 1987-07-23 Kurt G Dipl Ing Fickelscher Roll-ring-maschine zum verdichten und foerdern von fluiden
JP2788774B2 (ja) * 1989-12-27 1998-08-20 トヨタ自動車株式会社 可変容量型ベーンポンプ
DE4014636A1 (de) * 1990-05-08 1992-07-02 Thomas Lindlmair Rotationspumpe mit variablen foerdermengen und foerdereinrichtungen bei gleicher pumpendrehzahl und -drehrichtung
DE4200305C2 (de) * 1992-01-09 1995-06-08 Glyco Metall Werke Regelbare Flügelzellenpumpe in kompakter Bauweise
JP3112544B2 (ja) * 1992-03-06 2000-11-27 ジヤトコ・トランステクノロジー株式会社 可変容量型ベーンポンプ
DE4302610C2 (de) * 1993-01-30 1996-08-08 Daimler Benz Ag Verfahren zum Regeln der Pumpleistung von Schmiermittelpumpen und Schmiermittelpumpe hierfür
DE4319200C1 (de) * 1993-06-09 1994-07-21 Glyco Metall Werke Mehrstufenregler für Schmiermittelpumpen mit kontinuierlich veränderbarem Fördervolumen
DE4442083C2 (de) * 1993-11-26 1998-07-02 Aisin Seiki Flügelzellenpumpe
DE19504220A1 (de) 1995-02-09 1996-08-14 Bosch Gmbh Robert Verstellbare hydrostatische Pumpe
DE19532703C1 (de) * 1995-09-05 1996-11-21 Guenther Beez Pendelschiebermaschine
DE19533686C2 (de) * 1995-09-12 1997-06-19 Daimler Benz Ag Regelbare Flügelzellenpumpe als Schmiermittelpumpe
DE19631974C2 (de) 1996-08-08 2002-08-22 Bosch Gmbh Robert Flügelzellenmaschine
DE10029969C1 (de) 2000-06-26 2001-08-30 Joma Hydromechanic Gmbh Flügelzellenpumpe
DE10352267A1 (de) * 2003-11-08 2005-06-16 Beez, Günther, Dipl.-Ing. Pendelschiebermaschine
EP1934478B1 (fr) 2005-10-06 2009-01-28 Joma-Hydromechanic GmbH Pompe a palettes coulissantes
DE502006004164D1 (de) * 2005-10-06 2009-08-20 Joma Hydromechanic Gmbh Flügelzellenpumpe
DE502006005306D1 (de) * 2005-10-06 2009-12-17 Joma Polytec Kunststofftechnik Flügelzellenpumpe
US7736134B2 (en) * 2006-10-10 2010-06-15 Joma-Polytec Kunststofftechnik Gmbh Vane machine, in particular vane pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102943756A (zh) * 2012-10-25 2013-02-27 王德忠 一种叶片不与转子侧壁产生摩擦的叶片泵或马达

Also Published As

Publication number Publication date
KR20080049690A (ko) 2008-06-04
JP2009510330A (ja) 2009-03-12
WO2007039012A1 (fr) 2007-04-12
US8210836B2 (en) 2012-07-03
JP4795437B2 (ja) 2011-10-19
EP1934478A1 (fr) 2008-06-25
DE502006002760D1 (de) 2009-03-19
US20070292291A1 (en) 2007-12-20
KR101131290B1 (ko) 2012-03-30

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