JPS59131787A - Rotary pump - Google Patents

Rotary pump

Info

Publication number
JPS59131787A
JPS59131787A JP711383A JP711383A JPS59131787A JP S59131787 A JPS59131787 A JP S59131787A JP 711383 A JP711383 A JP 711383A JP 711383 A JP711383 A JP 711383A JP S59131787 A JPS59131787 A JP S59131787A
Authority
JP
Japan
Prior art keywords
rotor
crescent
high pressure
outer rotor
inner rotor
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
JP711383A
Other languages
Japanese (ja)
Inventor
Aoi Sugimoto
Yasuyoshi Saegusa
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 JP711383A priority Critical patent/JPS59131787A/en
Publication of JPS59131787A publication Critical patent/JPS59131787A/en
Pending legal-status Critical Current

Links

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
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10Rotary-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
    • F04C2/101Rotary-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 with a crescent-shaped filler element, located between the inner and outer intermeshing members

Abstract

PURPOSE:To reduce leakage against low viscosity and high pressure of fluid to be pumped by a method wherein a crescent is provided between an outer rotor and an inner rotor while a paratrochoidal curve is employed to form the shapes of the teeth of both rotors. CONSTITUTION:The shapes of the teeth of the outer rotor 12 and the inner rotor 11 are formed by the paratrochoidal curve and the crescent 5 is provided between the outer rotor 12 and the inner rotor 11. According to this method, the low pressure side and the high pressure side of the pump may be partitioned by surface contacts between the crescent 5 and the inner diameter of the outer rotor 12 as well as the outer diameter of the inner rotor 11, therefore, leakage may be reduced against the low viscosity and the high pressure of the fluid to the pumped.
JP711383A 1983-01-18 1983-01-18 Rotary pump Pending JPS59131787A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP711383A JPS59131787A (en) 1983-01-18 1983-01-18 Rotary pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP711383A JPS59131787A (en) 1983-01-18 1983-01-18 Rotary pump

Publications (1)

Publication Number Publication Date
JPS59131787A true JPS59131787A (en) 1984-07-28

Family

ID=11657029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP711383A Pending JPS59131787A (en) 1983-01-18 1983-01-18 Rotary pump

Country Status (1)

Country Link
JP (1) JPS59131787A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692888A (en) * 1995-10-24 1997-12-02 Truninger Ag Gear train mechanism having reduced leakage
WO2006086887A1 (en) * 2005-02-16 2006-08-24 Magna Powertrain Inc. Crescent gear pump with novel rotor set
EP1970570A2 (en) * 2007-03-16 2008-09-17 Yamada Manufacturing Co., Ltd. Internal gear pump
EP2050962A2 (en) 2007-10-21 2009-04-22 Yamada Manufacturing Co., Ltd. Method for manufacturing trochoid pump and trochoid pump obtained
EP2050963A2 (en) 2007-10-21 2009-04-22 Yamada Manufacturing Co., Ltd. Method for manufacturing trochoid pump and trochoid pump obtained

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692888A (en) * 1995-10-24 1997-12-02 Truninger Ag Gear train mechanism having reduced leakage
WO2006086887A1 (en) * 2005-02-16 2006-08-24 Magna Powertrain Inc. Crescent gear pump with novel rotor set
US7766634B2 (en) 2005-02-16 2010-08-03 Magna Powertrain Inc. Crescent gear pump with novel rotor set
EP1970570A2 (en) * 2007-03-16 2008-09-17 Yamada Manufacturing Co., Ltd. Internal gear pump
US7625192B2 (en) 2007-03-16 2009-12-01 Yamada Manufacturing Co., Ltd. Internal gear pump including a crescent
EP1970570A3 (en) * 2007-03-16 2010-01-13 Yamada Manufacturing Co., Ltd. Internal gear pump
EP2050962A2 (en) 2007-10-21 2009-04-22 Yamada Manufacturing Co., Ltd. Method for manufacturing trochoid pump and trochoid pump obtained
EP2050963A2 (en) 2007-10-21 2009-04-22 Yamada Manufacturing Co., Ltd. Method for manufacturing trochoid pump and trochoid pump obtained
US7967585B2 (en) 2007-10-21 2011-06-28 Yamada Manufacturing Co., Ltd. Method for manufacturing trochoid pump and trochoid pump obtained
US7967586B2 (en) 2007-10-21 2011-06-28 Yamada Manufacturing Co., Ltd. Method for manufacturing trochoid pump and trochoid pump obtained

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