JPS575585A - Variable delivery vane pump - Google Patents
Variable delivery vane pumpInfo
- 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
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
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)
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)
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 |
-
1980
- 1980-06-12 JP JP7842380A patent/JPS575585A/en active Pending
-
1981
- 1981-06-12 DE DE19813123420 patent/DE3123420A1/en not_active Ceased
Cited By (2)
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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