JPS6483874A - Internal gear type rotary pump - Google Patents

Internal gear type rotary pump

Info

Publication number
JPS6483874A
JPS6483874A JP24201787A JP24201787A JPS6483874A JP S6483874 A JPS6483874 A JP S6483874A JP 24201787 A JP24201787 A JP 24201787A JP 24201787 A JP24201787 A JP 24201787A JP S6483874 A JPS6483874 A JP S6483874A
Authority
JP
Japan
Prior art keywords
pumping chamber
maximum
internal gear
type rotary
gear type
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.)
Pending
Application number
JP24201787A
Other languages
Japanese (ja)
Inventor
Kikuo Hashimoto
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP24201787A priority Critical patent/JPS6483874A/en
Publication of JPS6483874A publication Critical patent/JPS6483874A/en
Pending legal-status Critical Current

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
    • F04C2/102—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

PURPOSE:To abate the occurrence of cavitation by installing a confinement part in a position of a pumping chamber being situated in the more rotation front than the pumping chamber being maximum in its inlet area. CONSTITUTION:In an internal gear type rotary pump with an inner rotor 1 and an outer rotor 2, a confinement part 7 should be set in a position of a pumping chamber 3 in the more rotational front than the pumping chamber 3 being maximum in its inlet area. When inflow speed of a liquid at the time of cavitation occurring is set to V0 and actual liquid inflow speed to the pumping chamber 3 to V, respectively, a confinement part rotation side contact angle that set a line connecting centers O, O' of these rotors 1, 2 when V<V0 is set to beta0, and when the confinement rotation side contact angle when S comes the maximum is set to alpha0, a terminal 4a of an inlet port 4 is set up in a position of an angle gamma where a condition of beta0<gamma<=alpha0 is satisfied.
JP24201787A 1987-09-25 1987-09-25 Internal gear type rotary pump Pending JPS6483874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24201787A JPS6483874A (en) 1987-09-25 1987-09-25 Internal gear type rotary pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24201787A JPS6483874A (en) 1987-09-25 1987-09-25 Internal gear type rotary pump

Publications (1)

Publication Number Publication Date
JPS6483874A true JPS6483874A (en) 1989-03-29

Family

ID=17083028

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24201787A Pending JPS6483874A (en) 1987-09-25 1987-09-25 Internal gear type rotary pump

Country Status (1)

Country Link
JP (1) JPS6483874A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003214356A (en) * 2002-01-25 2003-07-30 Sumitomo Electric Ind Ltd Internal gear pump
EP1640610A2 (en) 2004-09-28 2006-03-29 Aisin Seiki Kabushiki Kaisha Rotor structure of inscribed gear pump
JP2013060924A (en) * 2011-09-15 2013-04-04 Sumitomo Electric Sintered Alloy Ltd Internal gear pump

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153482A (en) * 1984-08-23 1986-03-17 Yamada Seisakusho:Kk Trochoidal pump for engine lubricatioin
JPS6251782A (en) * 1985-08-30 1987-03-06 Yamada Seisakusho:Kk Trochoid pump for lubricating engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153482A (en) * 1984-08-23 1986-03-17 Yamada Seisakusho:Kk Trochoidal pump for engine lubricatioin
JPS6251782A (en) * 1985-08-30 1987-03-06 Yamada Seisakusho:Kk Trochoid pump for lubricating engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003214356A (en) * 2002-01-25 2003-07-30 Sumitomo Electric Ind Ltd Internal gear pump
EP1640610A2 (en) 2004-09-28 2006-03-29 Aisin Seiki Kabushiki Kaisha Rotor structure of inscribed gear pump
JP2013060924A (en) * 2011-09-15 2013-04-04 Sumitomo Electric Sintered Alloy Ltd Internal gear pump

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