EP1219835A3 - Trochoid pump - Google Patents

Trochoid pump Download PDF

Info

Publication number
EP1219835A3
EP1219835A3 EP01309877A EP01309877A EP1219835A3 EP 1219835 A3 EP1219835 A3 EP 1219835A3 EP 01309877 A EP01309877 A EP 01309877A EP 01309877 A EP01309877 A EP 01309877A EP 1219835 A3 EP1219835 A3 EP 1219835A3
Authority
EP
European Patent Office
Prior art keywords
pump
trochoid
hole
capacity
reached
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.)
Withdrawn
Application number
EP01309877A
Other languages
German (de)
French (fr)
Other versions
EP1219835A2 (en
Inventor
Tamio Kosugi
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.)
Mitsuba Corp
Original Assignee
Mitsuba Corp
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 Mitsuba Corp filed Critical Mitsuba Corp
Publication of EP1219835A2 publication Critical patent/EP1219835A2/en
Publication of EP1219835A3 publication Critical patent/EP1219835A3/en
Withdrawn legal-status Critical Current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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • 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
    • F04C11/008—Enclosed motor pump units
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven

Landscapes

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

Abstract

A trochoid pump is constructed so that it has a deaerating hole H that communicates with the outside, the hole H being formed on the groove bottom face 10e of the rotor casing in which a trochoid gear T is accommodated. The pump includes inner and outer rotors 12 and 13 with engaging teeth 12a and 13a, which define variable capacity pump spaces 18. The deaerating hole H is formed at a position that is closed by the front side edge, in the direction of rotation at a time when a pump space PR has reached the reached its maximum capacity and vaporized fuel is exhausted when the pump space is about to decrease its capacity. The trochoid pump can suppress generation of a vapor lock phenomenon based on a rise in the fuel temperature without loss of pump efficiency.
EP01309877A 2000-12-25 2001-11-23 Trochoid pump Withdrawn EP1219835A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000392634 2000-12-25
JP2000392634A JP2002195168A (en) 2000-12-25 2000-12-25 Trochoid pump

Publications (2)

Publication Number Publication Date
EP1219835A2 EP1219835A2 (en) 2002-07-03
EP1219835A3 true EP1219835A3 (en) 2003-10-15

Family

ID=18858589

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01309877A Withdrawn EP1219835A3 (en) 2000-12-25 2001-11-23 Trochoid pump

Country Status (4)

Country Link
EP (1) EP1219835A3 (en)
JP (1) JP2002195168A (en)
CN (1) CN1361358A (en)
TW (1) TW508412B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005021597A1 (en) * 2005-05-10 2006-11-16 Siemens Ag Fuel pump
JP4584770B2 (en) * 2005-05-20 2010-11-24 ペガサスミシン製造株式会社 Sewing machine oiling equipment
JP4237731B2 (en) * 2005-05-31 2009-03-11 株式会社日立製作所 Motor-integrated internal gear pump, method for manufacturing the same, and electronic device
JP5692034B2 (en) * 2011-12-14 2015-04-01 株式会社ダイヤメット Oil pump rotor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697995A (en) * 1982-07-29 1987-10-06 Walbro Corporation Rotary positive displacement fuel pump with purge port
US5263818A (en) * 1991-11-05 1993-11-23 Nippondenso Co., Ltd. Pump for pumping fluid without vacuum boiling
US5571003A (en) * 1995-06-13 1996-11-05 Walbro Corporation Fuel pump with and method to modulate vapor purge port pressure pulses

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697995A (en) * 1982-07-29 1987-10-06 Walbro Corporation Rotary positive displacement fuel pump with purge port
US5263818A (en) * 1991-11-05 1993-11-23 Nippondenso Co., Ltd. Pump for pumping fluid without vacuum boiling
US5571003A (en) * 1995-06-13 1996-11-05 Walbro Corporation Fuel pump with and method to modulate vapor purge port pressure pulses

Also Published As

Publication number Publication date
CN1361358A (en) 2002-07-31
TW508412B (en) 2002-11-01
JP2002195168A (en) 2002-07-10
EP1219835A2 (en) 2002-07-03

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