EP0361716A2 - Gerotorpumpen - Google Patents

Gerotorpumpen Download PDF

Info

Publication number
EP0361716A2
EP0361716A2 EP89309135A EP89309135A EP0361716A2 EP 0361716 A2 EP0361716 A2 EP 0361716A2 EP 89309135 A EP89309135 A EP 89309135A EP 89309135 A EP89309135 A EP 89309135A EP 0361716 A2 EP0361716 A2 EP 0361716A2
Authority
EP
European Patent Office
Prior art keywords
rotor
pump
shaft
gear
journalled
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
Application number
EP89309135A
Other languages
English (en)
French (fr)
Other versions
EP0361716B1 (de
EP0361716A3 (en
Inventor
Steve Hodge
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.)
Concentric Pumps Ltd
Original Assignee
Concentric Pumps Ltd
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 GB888822696A external-priority patent/GB8822696D0/en
Application filed by Concentric Pumps Ltd filed Critical Concentric Pumps Ltd
Priority to AT89309135T priority Critical patent/ATE93933T1/de
Publication of EP0361716A2 publication Critical patent/EP0361716A2/de
Publication of EP0361716A3 publication Critical patent/EP0361716A3/en
Application granted granted Critical
Publication of EP0361716B1 publication Critical patent/EP0361716B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • 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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations

Definitions

  • This invention relates to gerotor pumps comprising a male lobed rotor meshed internally of a female lobed annulus.
  • the annulus has more lobes - usually one more - than the rotor, and their axes are eccentric.
  • the chambers bounded by the respective lobes open to an inlet, and on the other side of that plane they open to an outlet. Relative rotation causes said chambers to process about the axes and so vary in size thus inducing flow into the chambers on the inlet side and expelling it out on the outlet side.
  • Such pumps are herein called "of the kind referred to”.
  • Known pumps of this kind have the male rotor fast, for example keyed to a drive shaft which is essentially journalled over an axially extending zone, for example in the pump casing wall, possibly even at two axial locations, one on either side of the meshed parts.
  • the shaft is also fast with a drive pulley, sprocket or gear (collectively called "gear”) at a further location.
  • the object of the invention is to provide improvements and particularly to enable shorter axial length to be provided.
  • a pump of the kind referred to is characterised by a shaft fast with the pump body and in that the rotor is journalled directly or indirectly on the shaft.
  • the shaft is for example a force-fit in the body
  • the length of shaft necessary for body engagement is substantially less than what is necessary for spaced bearings carrying a cantilevered shaft, or less than what is necessary for two axially spaced sets of bearings in other designs.
  • the gear may be journalled directly on the shaft and the rotor carried by the gear.
  • the gear may be journalled on the body and the rotor journalled directly on the shaft.
  • a pump body 10 is provided with one or more inlet passages 12 opening through the side wall (not shown) to the cavity housing the annulus 14 and rotor 16.
  • the outlet passage opens from that cavity. It will be appreciated that both inlet and outlet may open generally radially or tangentially from the cavity or through one or other side wall, or a combination of these according to requirements.
  • Shaft 18 is fast in the body, for example being a press-fit.
  • it is bushed at 20-22 to journal the rotor 16 and the drive gear 24 respectively.
  • a passage system 30-32 shown in dotted line communicates with port 34 to allow lubrication of the bushes.
  • the drive gear (or sprocket 24) is provided with axially extending dogs 28 (see Figure 2) which mesh with like dogs 26 in the rotor 16 so that the gear and rotor are directly dogged together for drive between them.
  • the gear drives the rotor which drives the annulus at a different speed for the usual gerotor pumping action.
  • the arrangement is generally similar except that here the gear 24 has a hub portion 38 extending over the full axial dimension of the rotor 16, so that the rotor may be considered to be indirectly journalled on the shaft.
  • the hub and rotor are keyed or splined together at 46 for direct drive between them.
  • shaft 18 carries bushes 20, 22 journalling rotor 16.
  • Annulus 14 fits directly in a cylindrical body part 10, and on the exterior of that body part is a further bush 50 which is concentric with the axis of shaft 18 and which journals drive pinion 52.
  • the pinion is connected by a spider 54 meshed at its outer periphery with the pinion 52 and splined at 56 on to an axial extension 58 integral with the rotor 16.
  • pinion 52 drives the rotor 16 which in turn drives the annulus 14.
  • the section is taken on a line non-diametric of the engaged rotor and annulus.
  • pinion 52 is in this case splined at 60 to an axial extension 62 on the annulus 14.
  • Rotor 16 is lined by bush 20 on the shaft 10, which as in Figure 4, is fast in the pump body.
  • pinion 52 is splined at 56 to the axial extension 58 of the rotor 16 which is bushed 20, 22 to the shaft 18.
  • the pinion is bushed at 50 onto the cylindrical part of the body 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
EP89309135A 1988-09-28 1989-09-08 Gerotorpumpen Expired - Lifetime EP0361716B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89309135T ATE93933T1 (de) 1988-09-28 1989-09-08 Gerotorpumpen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB888822696A GB8822696D0 (en) 1988-09-28 1988-09-28 Improvements relating to gerotor pumps
GB8822696 1988-09-28
GB8913368 1989-06-09
GB8913368A GB2223275B (en) 1988-09-28 1989-06-09 Improvements relating to gerotor pumps

Publications (3)

Publication Number Publication Date
EP0361716A2 true EP0361716A2 (de) 1990-04-04
EP0361716A3 EP0361716A3 (en) 1990-07-11
EP0361716B1 EP0361716B1 (de) 1993-09-01

Family

ID=26294448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89309135A Expired - Lifetime EP0361716B1 (de) 1988-09-28 1989-09-08 Gerotorpumpen

Country Status (15)

Country Link
EP (1) EP0361716B1 (de)
JP (1) JPH02185682A (de)
AR (1) AR247277A1 (de)
AU (1) AU617002B2 (de)
BR (1) BR8904894A (de)
CA (1) CA1333857C (de)
DE (1) DE68908826T2 (de)
DK (1) DK172577B1 (de)
ES (1) ES2045459T3 (de)
FI (1) FI98949C (de)
IE (1) IE62731B1 (de)
IN (1) IN176246B (de)
NO (1) NO893845L (de)
NZ (1) NZ230719A (de)
PT (1) PT91814B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457490A1 (de) * 1990-05-12 1991-11-21 Concentric Pumps Limited Gerotorpumpen
WO1994004824A1 (en) * 1992-08-18 1994-03-03 Concentric Pumps Limited Compact gerotor pump
WO1998021479A1 (de) * 1996-11-12 1998-05-22 Voith Turbo Gmbh & Co. Kg Innenzahnradpumpe mit antrieb über das hohlrad
WO2003074875A1 (en) * 2002-03-06 2003-09-12 Concentric Pumps Limited Gerotor pump for vehicle transmission system
CN105065259A (zh) * 2015-08-27 2015-11-18 天津雷沃动力有限公司 一种柴油机机油泵的润滑结构

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9015291D0 (en) * 1990-07-11 1990-08-29 Concentric Pumps Ltd Improvements in gerotor pumps
DE102006008757A1 (de) * 2006-02-24 2007-08-30 Daimlerchrysler Ag Förderpumpe in einem Kraftfahrzeug
RU2472970C1 (ru) * 2011-10-11 2013-01-20 Открытое акционерное общество "Научно-производственное объединение "Сатурн" (ОАО "НПО "Сатурн") Героторный насос с торцовым входом

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1252446A (de) * 1967-10-23 1971-11-03
FR2527683A1 (fr) * 1982-05-31 1983-12-02 Tovarna Motornih Vazil Tomos Pompe a huile pour lubrification forcee d'un moteur a combustion interne a quatre temps
DE3504306A1 (de) * 1984-02-16 1985-08-22 Volkswagenwerk Ag, 3180 Wolfsburg Pumpe, insbesondere oelpumpe fuer eine brennkraftmaschine
DE3506928A1 (de) * 1985-02-27 1986-08-28 Schwäbische Hüttenwerke GmbH, 7080 Aalen Innenzahnradpumpe als schmieroelpumpe fuer einen verbrennungsmotor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6029604Y2 (ja) * 1981-06-16 1985-09-06 富士重工業株式会社 内燃機関の潤滑油ポンプ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1252446A (de) * 1967-10-23 1971-11-03
FR2527683A1 (fr) * 1982-05-31 1983-12-02 Tovarna Motornih Vazil Tomos Pompe a huile pour lubrification forcee d'un moteur a combustion interne a quatre temps
DE3504306A1 (de) * 1984-02-16 1985-08-22 Volkswagenwerk Ag, 3180 Wolfsburg Pumpe, insbesondere oelpumpe fuer eine brennkraftmaschine
DE3506928A1 (de) * 1985-02-27 1986-08-28 Schwäbische Hüttenwerke GmbH, 7080 Aalen Innenzahnradpumpe als schmieroelpumpe fuer einen verbrennungsmotor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457490A1 (de) * 1990-05-12 1991-11-21 Concentric Pumps Limited Gerotorpumpen
WO1994004824A1 (en) * 1992-08-18 1994-03-03 Concentric Pumps Limited Compact gerotor pump
US5554019A (en) * 1992-08-18 1996-09-10 Concentric Pumps Limited Compact gerotor pump
WO1998021479A1 (de) * 1996-11-12 1998-05-22 Voith Turbo Gmbh & Co. Kg Innenzahnradpumpe mit antrieb über das hohlrad
WO2003074875A1 (en) * 2002-03-06 2003-09-12 Concentric Pumps Limited Gerotor pump for vehicle transmission system
CN105065259A (zh) * 2015-08-27 2015-11-18 天津雷沃动力有限公司 一种柴油机机油泵的润滑结构
CN105065259B (zh) * 2015-08-27 2018-02-23 天津雷沃动力有限公司 一种柴油机机油泵的润滑结构

Also Published As

Publication number Publication date
AU4128789A (en) 1990-04-05
IN176246B (de) 1996-03-23
NZ230719A (en) 1991-09-25
DE68908826T2 (de) 1993-12-23
EP0361716B1 (de) 1993-09-01
IE893087L (en) 1990-03-28
FI894603A (fi) 1990-03-29
PT91814B (pt) 1995-08-09
JPH02185682A (ja) 1990-07-20
DK471889A (da) 1990-03-29
DE68908826D1 (de) 1993-10-07
AU617002B2 (en) 1991-11-14
DK471889D0 (da) 1989-09-26
BR8904894A (pt) 1990-05-08
FI98949C (fi) 1997-09-10
PT91814A (pt) 1990-03-30
DK172577B1 (da) 1999-02-01
FI894603A0 (fi) 1989-09-28
FI98949B (fi) 1997-05-30
AR247277A1 (es) 1994-11-30
CA1333857C (en) 1995-01-10
EP0361716A3 (en) 1990-07-11
NO893845D0 (no) 1989-09-27
ES2045459T3 (es) 1994-01-16
NO893845L (no) 1990-03-29
IE62731B1 (en) 1995-02-22

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