IN2014DN09814A - - Google Patents

Info

Publication number
IN2014DN09814A
IN2014DN09814A IN9814DEN2014A IN2014DN09814A IN 2014DN09814 A IN2014DN09814 A IN 2014DN09814A IN 9814DEN2014 A IN9814DEN2014 A IN 9814DEN2014A IN 2014DN09814 A IN2014DN09814 A IN 2014DN09814A
Authority
IN
India
Prior art keywords
suction
region
discharge
rotational axis
outer rotor
Prior art date
Application number
Inventor
Hirohito Terashima
Fumihiko Toyoda
Original Assignee
Aisin Seiki
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 Aisin Seiki filed Critical Aisin Seiki
Publication of IN2014DN09814A publication Critical patent/IN2014DN09814A/en

Links

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
    • F04C2/103—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 one member having simultaneously a rotational movement about its own axis and an orbital movement
    • 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
    • F04C2/086—Carter
    • 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
    • F04C15/0088—Lubrication
    • 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
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F04C2240/54—Hydrostatic or hydrodynamic bearing assemblies specially adapted for rotary positive displacement pumps or compressors
    • 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
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F04C2240/56—Bearing bushings or details thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

This internal gear pump comprises a housing having a pump chamber. An inner rotor that rotates about a first rotational axis and an outer rotor that rotates about a second rotational axis are arranged in the pump chamber. A suction port and a discharge port are formed in the housing and also a suction path that is in communication with the suction port and a discharge path that is in communication with the discharge port are provided. The pump chamber has an inner wall that extends in the rotating direction of the outer rotor. With a plane including the first rotational axis and the second rotational axis as a boundary ,the inner wall has a suction region that is on the side of the suction port with respect to the boundary and a discharge region that is on the side of the discharge port with respect to the boundary. The suction region has a first suction region that extends in the circumferential direction toward the suction path from a pressing point , which is located at a position where the outer rotor is pressed when in operation, and a second suction region located between the first suction region and the discharge region. A groove that enlarges the gap between the outer rotor and the inner wall is provided in the first suction region. No groove is provided in the second suction region.
IN9814DEN2014 2012-06-01 2014-11-19 IN2014DN09814A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012126373A JP5783136B2 (en) 2012-06-01 2012-06-01 Inscribed gear pump
PCT/JP2013/064484 WO2013180033A1 (en) 2012-06-01 2013-05-24 Internal gear pump

Publications (1)

Publication Number Publication Date
IN2014DN09814A true IN2014DN09814A (en) 2015-07-31

Family

ID=49673229

Family Applications (1)

Application Number Title Priority Date Filing Date
IN9814DEN2014 IN2014DN09814A (en) 2012-06-01 2014-11-19

Country Status (7)

Country Link
US (1) US9765774B2 (en)
EP (1) EP2857685B1 (en)
JP (1) JP5783136B2 (en)
CN (1) CN104364527B (en)
BR (1) BR112014029321B1 (en)
IN (1) IN2014DN09814A (en)
WO (1) WO2013180033A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6985884B2 (en) * 2017-10-20 2021-12-22 株式会社山田製作所 Scavenging pump
CZ310645B6 (en) * 2024-07-15 2026-03-11 Tatra Trucks A.S. A trochoid pump

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434135A (en) * 1942-12-02 1948-01-06 Eaton Mfg Co Gear pump structure
US2522824A (en) * 1944-08-29 1950-09-19 Thomas L Hicks Rotary compressor
JPS63195391A (en) * 1987-02-10 1988-08-12 Sumitomo Electric Ind Ltd Trochoid gear pump
JPH08312539A (en) * 1995-05-15 1996-11-26 Toyo A Tec Kk Internal gear pump
CN2348150Y (en) * 1998-08-28 1999-11-10 上海浦东龙盛印染机械有限公司 Internal engagement gear pulp pump
GB9922360D0 (en) * 1999-09-22 1999-11-24 Hobourn Automotive Ltd Improvements relating to pumps
JP4600612B2 (en) * 2000-03-22 2010-12-15 株式会社ジェイテクト Internal gear pump device
JP2003035277A (en) * 2001-07-24 2003-02-07 Nachi Fujikoshi Corp Trochoid pump
JP3801536B2 (en) * 2002-06-27 2006-07-26 アイシン・エィ・ダブリュ株式会社 Internal gear type oil pump and automatic transmission equipped with the same
JP4792342B2 (en) * 2006-07-19 2011-10-12 日立オートモティブシステムズ株式会社 Internal gear pump and power steering device
CN201129295Y (en) * 2007-08-17 2008-10-08 宁波高新协力机电液有限公司 High pressure gear ring pump internal tooth ring static pressure unloading device
JP5084536B2 (en) * 2008-02-05 2012-11-28 日立オートモティブシステムズ株式会社 Oil pump
JP2012057561A (en) * 2010-09-10 2012-03-22 Sumitomo Electric Sintered Alloy Ltd Internal gear oil pump

Also Published As

Publication number Publication date
EP2857685B1 (en) 2017-01-11
US20150064038A1 (en) 2015-03-05
WO2013180033A1 (en) 2013-12-05
JP5783136B2 (en) 2015-09-24
CN104364527A (en) 2015-02-18
JP2013249806A (en) 2013-12-12
US9765774B2 (en) 2017-09-19
CN104364527B (en) 2016-10-05
EP2857685A4 (en) 2015-06-24
BR112014029321B1 (en) 2021-06-22
BR112014029321A2 (en) 2017-06-27
EP2857685A1 (en) 2015-04-08

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