JPS575585A - Variable delivery vane pump - Google Patents

Variable delivery vane pump

Info

Publication number
JPS575585A
JPS575585A JP7842380A JP7842380A JPS575585A JP S575585 A JPS575585 A JP S575585A JP 7842380 A JP7842380 A JP 7842380A JP 7842380 A JP7842380 A JP 7842380A JP S575585 A JPS575585 A JP S575585A
Authority
JP
Japan
Prior art keywords
pressure
oil
throttle
delivery
main piston
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
JP7842380A
Other languages
Japanese (ja)
Inventor
Tomoaki Matsumoto
Tomio Daigo
Noboru Hirokawa
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.)
Nachi Fujikoshi Corp
Original Assignee
Nachi Fujikoshi Corp
Fujikoshi KK
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 Nachi Fujikoshi Corp, Fujikoshi KK filed Critical Nachi Fujikoshi Corp
Priority to JP7842380A priority Critical patent/JPS575585A/en
Priority to DE19813123420 priority patent/DE3123420A1/en
Publication of JPS575585A publication Critical patent/JPS575585A/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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam

Landscapes

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

Abstract

PURPOSE: To obtain stable characteristics of a pump, by providing an oil passage communicated through a throttle to a surface receiving delivery pressure of a main piston and a tank.
CONSTITUTION: An oil passage 24 opened to a surface 4' of a main piston 4 and a tank (not shown) through a throttle 12 is provided so as to relieve pressure oil in a pressure chamber 23. When a rotor 8 is rotated counter clockwise from a state for a ring 7 pressed rightward by a spring 10, pressure oil from a delivery chamber 15 is acted upon a spool 6 of a pressure compensator 3 with that from a pressure chamber 22 in a piston 5. If delivery pressure is increased, the spool 6 is moved rightward and delivery oil goes into the pressure chamber 23 from a port 17, partially passes through the throttle 12 and the oil passage 24 and is relieved to the tank, while high pressure oil by the throttle 12 acts to the surface 4' of the main piston 4 to move the ring 7 leftward. In this way, oil leaking from the main piston part is reduced to a minimum limit, thus a stable characteristic with a small change of pressure can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP7842380A 1980-06-12 1980-06-12 Variable delivery vane pump Pending JPS575585A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP7842380A JPS575585A (en) 1980-06-12 1980-06-12 Variable delivery vane pump
DE19813123420 DE3123420A1 (en) 1980-06-12 1981-06-12 Variable-output vane pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7842380A JPS575585A (en) 1980-06-12 1980-06-12 Variable delivery vane pump

Publications (1)

Publication Number Publication Date
JPS575585A true JPS575585A (en) 1982-01-12

Family

ID=13661631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7842380A Pending JPS575585A (en) 1980-06-12 1980-06-12 Variable delivery vane pump

Country Status (2)

Country Link
JP (1) JPS575585A (en)
DE (1) DE3123420A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62294454A (en) * 1986-03-28 1987-12-21 コ−ブ・ラボラトリ−ズ・インコ−ポレ−テツド Centrifugal separator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH022949Y2 (en) * 1980-07-07 1990-01-24
DE102019215830A1 (en) * 2019-10-15 2021-04-15 Robert Bosch Gmbh Positive displacement pump and method of operating a positive displacement pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62294454A (en) * 1986-03-28 1987-12-21 コ−ブ・ラボラトリ−ズ・インコ−ポレ−テツド Centrifugal separator
JPH0144104B2 (en) * 1986-03-28 1989-09-26 Cobe Lab

Also Published As

Publication number Publication date
DE3123420A1 (en) 1982-05-19

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