US20040037726A1 - G-rotor pump - Google Patents

G-rotor pump Download PDF

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Publication number
US20040037726A1
US20040037726A1 US10/453,930 US45393003A US2004037726A1 US 20040037726 A1 US20040037726 A1 US 20040037726A1 US 45393003 A US45393003 A US 45393003A US 2004037726 A1 US2004037726 A1 US 2004037726A1
Authority
US
United States
Prior art keywords
rotor
pump
pockets
internal
external
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.)
Abandoned
Application number
US10/453,930
Other languages
English (en)
Inventor
Sabine Burhenne
Cicero Constantin
Johannes Deichmann
Karsten Meiser
Ralf Muhlhausen
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.)
Siemens AG
Original Assignee
Siemens AG
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
Application filed by Siemens AG filed Critical Siemens AG
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CONSTANTIN, CICERO, DEICHMANN, JOHANNES, MEISER, KARSTEN, MUHLHAUSEN, RAL, BURHENNE, SABINE
Publication of US20040037726A1 publication Critical patent/US20040037726A1/en
Abandoned 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/005—Removing contaminants, deposits or scale from the pump; Cleaning
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/088—Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/22—Manufacture essentially without removing material by sintering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a G-rotor pump which is used as a fuel pump in a motor vehicle, and in particular, having an external rotor and an internal rotor moveable relative to the external rotor, in which pump a conveying space is delimited between the external rotor and the internal rotor.
  • G-rotor pumps are often also designated as geared pumps or eccentric pumps, and are known from practice.
  • the external rotor has an internal toothing and the internal rotor has an external toothing corresponding to the internal toothing.
  • the external toothing has one tooth less than the internal toothing, with the result that the conveying space is formed.
  • the internal rotor or the external rotor is driven, the external toothing of the internal rotor rolls over the internal toothing of the external rotor.
  • the G-rotor pump is therefore usually preceded by a particularly close-mesh filter. Since dirt particles may quickly clog the filter, however, this design leads to a highly cost-intensive maintenance of the G-rotor pump.
  • pockets are arranged in the external rotor and/or the internal rotor.
  • the dirt particles can collect in the pockets and are consequently kept away from rotor tooth flanks rolling on one another.
  • the dirt particles are subsequently flushed out of the pockets or the pockets are permanently filled with the dirt particles.
  • the pockets in this case require at least a size corresponding to the quantity of dirt particles located in the flow.
  • the G-rotor pump according to the invention has a particularly long service life, even when the liquid to be conveyed is heavily contaminated.
  • the G-rotor pump therefore requires no particularly close-mesh filter.
  • the G-rotor pump according to the invention is consequently particularly suitable for use as a fuel pump.
  • the dirt particles accumulate, as a result of the flow, in the pockets and can remain there if the pockets are designed as depressions arranged in tooth bottoms of the internal rotor.
  • the dirt particles can be conveyed out of the pockets in a simple way by the centrifugal forces if the pockets are designed as depressions arranged in the tooth bottoms of the internal rotor.
  • the G-rotor pump according one embodiment of the invention has a high capacity for the uptake of dirt particles when the pockets are arranged in all the tooth bottoms of the external rotor or tooth bottoms of the internal rotor.
  • a wear of the edges of the internal rotor and of the external rotor can be kept particularly low when the pockets extend over the entire height of the external rotor and/or the internal rotor.
  • the pockets can be manufactured in a particularly simple way when they have a groove-shaped design.
  • the bottom of the pockets could have an acute-angled or angular design.
  • a contribution to simplifying the collection of dirt and the discharge of dirt particles is made when the pockets have a radius in their bottom region. In this case, likewise, the notch effect of the pockets is kept particularly low.
  • a contribution to further lengthening the service life of the G-rotor pump according to the invention is made when the external rotor and/or the internal rotor are/is manufactured from metal.
  • a contribution to reducing the manufacturing costs of the G-rotor pump according to one embodiment of the invention is made when the external rotor and/or the internal rotor are/is manufactured from plastic.
  • the bottom and the cover can be manufactured from plastic and/or sintered metal.
  • FIG. 1 shows a longitudinal section through a fuel feed unit with a G-rotor pump according to the invention.
  • FIG. 2 shows an enlarged, sectional illustration through the G-rotor pump from FIG. 1 along the line II-II.
  • FIG. 3 shows a sectional illustration through another embodiment of the G-rotor pump.
  • FIG. 1 shows a fuel feed unit 1 with a housing 3 receiving an electric motor 4 and the G-rotor pump 2 .
  • the G-rotor pump 2 has a bottom 5 and a cover 7 held at an intended distance from the bottom 5 via a spacer 6 .
  • the spacer 6 and the cover 7 are manufactured in one piece here.
  • an internal rotor 9 fastened on a shaft 8 of the electric motor 4 .
  • the shaft 8 has, for the rotationally fixed drive of the internal rotor 9 , a flattening 10 and a step 11 .
  • the internal rotor 9 can be connected to the shaft 8 in the depicted position.
  • the internal rotor 9 has an external toothing 12 , illustrated in FIG. 2, which engages into an internal toothing 13 of an external rotor 14 .
  • the cover 7 has an inlet 15 and the bottom 5 an outlet 16 of the G-rotor pump 2 . Fuel is thereby taken in via the cover 7 and flows through the G-rotor pump 2 axially.
  • the housing 3 of the fuel feed unit 1 has a connection piece 17 for connecting a line, not illustrated. For clarity, the flows marked by arrows in the drawing.
  • FIG. 2 shows an enlarged, sectional illustration through the G-rotor pump 2 from FIG. 1 along the line II-II.
  • the external toothing 12 of the internal rotor 9 has one tooth less than the internal toothing 13 of the external rotor 14 . This results in a conveying space 18 , through which the feed liquid is conveyed from the inlet 15 , illustrated in FIG. 1, to the outlet 16 .
  • directions of rotation of the internal rotor 9 and of the external rotor 14 are marked by arrows.
  • FIG. 3 shows a sectional illustration through another embodiment of the G-rotor pump 2 which, like that from FIG. 2, has an internal rotor 20 with an external toothing 21 and an external rotor 22 with an internal toothing 23 .
  • This embodiment differs from that from FIG. 2 in that pockets 24 for the uptake of dirt particles are arranged in the tooth bottoms of the external toothing 21 of the internal rotor 20 .
  • tooth bottoms of the internal toothing 23 of the external rotor 22 are made smooth.
US10/453,930 2002-06-04 2003-06-04 G-rotor pump Abandoned US20040037726A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10224784A DE10224784A1 (de) 2002-06-04 2002-06-04 G-Rotorpumpe
DE10224784.6 2002-06-04

Publications (1)

Publication Number Publication Date
US20040037726A1 true US20040037726A1 (en) 2004-02-26

Family

ID=29432632

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/453,930 Abandoned US20040037726A1 (en) 2002-06-04 2003-06-04 G-rotor pump

Country Status (5)

Country Link
US (1) US20040037726A1 (de)
EP (1) EP1369588A1 (de)
JP (1) JP2004011641A (de)
CN (1) CN1488859A (de)
DE (1) DE10224784A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060140790A1 (en) * 2003-06-16 2006-06-29 Ralf Muehlhausen G-rotor pump
GB2443088A (en) * 2006-10-18 2008-04-23 Concentric Vfp Ltd Gerotor pump with filling axial rotor slot.
US20090016912A1 (en) * 2005-05-10 2009-01-15 Siemens Aktiengesellschaft Internal Gear Fuel Pump
CN103026067A (zh) * 2010-03-04 2013-04-03 罗伯特·博世有限公司 内齿轮泵
US8840385B2 (en) 2011-03-03 2014-09-23 Ti Group Automotive Systems, L.L.C. Positive displacement fluid pump
EP3376030A1 (de) * 2017-03-13 2018-09-19 Delphi Technologies IP Limited Flüssigkeitspumpe mit verschleissreduzierung des rotierenden pumpelements

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005188399A (ja) * 2003-12-25 2005-07-14 Mitsubishi Materials Corp 内接型ギアポンプ
JP2006233771A (ja) 2005-02-22 2006-09-07 Mitsubishi Materials Pmg Corp ポンプロータ
DE102007040724A1 (de) * 2007-08-29 2009-03-05 Robert Bosch Gmbh Förderaggregat
CN107624140B (zh) 2015-03-16 2021-01-26 沙特阿拉伯石油公司 用于井眼应用的等壁摆线泵
DE102015211785A1 (de) * 2015-06-25 2016-12-29 Bühler Motor GmbH Gleichstrommotor für eine Zahnradpumpe
US11371326B2 (en) 2020-06-01 2022-06-28 Saudi Arabian Oil Company Downhole pump with switched reluctance motor
US11499563B2 (en) 2020-08-24 2022-11-15 Saudi Arabian Oil Company Self-balancing thrust disk
US11920469B2 (en) 2020-09-08 2024-03-05 Saudi Arabian Oil Company Determining fluid parameters
US11644351B2 (en) 2021-03-19 2023-05-09 Saudi Arabian Oil Company Multiphase flow and salinity meter with dual opposite handed helical resonators
US11591899B2 (en) 2021-04-05 2023-02-28 Saudi Arabian Oil Company Wellbore density meter using a rotor and diffuser
US11913464B2 (en) 2021-04-15 2024-02-27 Saudi Arabian Oil Company Lubricating an electric submersible pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2344628A (en) * 1940-12-26 1944-03-21 Gar Wood Ind Inc Gear pump
US2428181A (en) * 1944-10-27 1947-09-30 Frank C Sibley Rotary gear pump
US3289542A (en) * 1963-10-29 1966-12-06 Lawrence Machine & Mfg Company Hydraulic motor or pump
US5368455A (en) * 1992-01-15 1994-11-29 Eisenmann; Siegfried A. Gear-type machine with flattened cycloidal tooth shapes
US5997262A (en) * 1997-04-10 1999-12-07 Walbro Corporation Screw pins for a gear rotor fuel pump assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3614626A1 (de) * 1985-06-07 1986-12-11 Mannesmann Rexroth GmbH, 8770 Lohr Zahnradmaschine
DE4021500C3 (de) * 1990-07-05 1998-10-22 Mannesmann Vdo Ag Förderaggregat, insbesondere zum Fördern von Kraftstoff
DE4200987A1 (de) * 1992-01-16 1993-07-22 Vittorio Varisco Zahnradpumpe
DE19717295C2 (de) * 1997-04-24 1999-09-23 Danfoss As Fluid-Maschine
DE19726794A1 (de) * 1997-06-24 1999-01-07 Elektra Beckum Ag Wasser-Hochdruckreinigungsgerät

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2344628A (en) * 1940-12-26 1944-03-21 Gar Wood Ind Inc Gear pump
US2428181A (en) * 1944-10-27 1947-09-30 Frank C Sibley Rotary gear pump
US3289542A (en) * 1963-10-29 1966-12-06 Lawrence Machine & Mfg Company Hydraulic motor or pump
US5368455A (en) * 1992-01-15 1994-11-29 Eisenmann; Siegfried A. Gear-type machine with flattened cycloidal tooth shapes
US5997262A (en) * 1997-04-10 1999-12-07 Walbro Corporation Screw pins for a gear rotor fuel pump assembly

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060140790A1 (en) * 2003-06-16 2006-06-29 Ralf Muehlhausen G-rotor pump
US7591637B2 (en) 2003-06-16 2009-09-22 Siemens Aktiengesellschaft G-rotor pump
US20090016912A1 (en) * 2005-05-10 2009-01-15 Siemens Aktiengesellschaft Internal Gear Fuel Pump
GB2443088A (en) * 2006-10-18 2008-04-23 Concentric Vfp Ltd Gerotor pump with filling axial rotor slot.
GB2443088B (en) * 2006-10-18 2011-10-12 Concentric Vfp Ltd Pumps with filling slots
CN103026067A (zh) * 2010-03-04 2013-04-03 罗伯特·博世有限公司 内齿轮泵
US8840385B2 (en) 2011-03-03 2014-09-23 Ti Group Automotive Systems, L.L.C. Positive displacement fluid pump
EP3376030A1 (de) * 2017-03-13 2018-09-19 Delphi Technologies IP Limited Flüssigkeitspumpe mit verschleissreduzierung des rotierenden pumpelements
US10584701B2 (en) 2017-03-13 2020-03-10 Delphi Technologies Ip Limited Fluid pump with rotating pumping element wear reduction

Also Published As

Publication number Publication date
JP2004011641A (ja) 2004-01-15
CN1488859A (zh) 2004-04-14
EP1369588A1 (de) 2003-12-10
DE10224784A1 (de) 2003-12-18

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BURHENNE, SABINE;DEICHMANN, JOHANNES;MUHLHAUSEN, RAL;AND OTHERS;REEL/FRAME:014612/0461;SIGNING DATES FROM 20031006 TO 20031007

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION