ES345101A1 - Pump - Google Patents
PumpInfo
- Publication number
- ES345101A1 ES345101A1 ES345101A ES345101A ES345101A1 ES 345101 A1 ES345101 A1 ES 345101A1 ES 345101 A ES345101 A ES 345101A ES 345101 A ES345101 A ES 345101A ES 345101 A1 ES345101 A1 ES 345101A1
- Authority
- ES
- Spain
- Prior art keywords
- valve
- pressure
- flow
- valve member
- chamber
- 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.)
- Expired
Links
- 239000007788 liquid Substances 0.000 abstract 5
- 238000005086 pumping Methods 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C15/062—Arrangements for supercharging the working space
-
- 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
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C14/26—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Details Of Reciprocating Pumps (AREA)
- Safety Valves (AREA)
- Reciprocating Pumps (AREA)
- Color Printing (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
A rotary pump includes in its outlet duct a flow control valve including a valve member movable in response to changes in pressure drop across the valve to control a by-pass orifice in a sense to open the by-pass when the pump speed reaches a predetermined value, to increase the orifice opening to reduce flow to the outlet duct as pump speed increases beyond said value and to close the by-pass orifice in response to an increase in fluid pressure in the outlet duct downstream of the flow control valve. As shown, the pump is of the roller vane type for supplying liquid to a power steering system in an automotive vehicle and comprises a rotor 12, Fig. 1, sandwiched between an end cover 15 and a pressure plate 30 subjected to pump discharge pressure. The valve member 33 having a conical end 40 is loaded by a spring 50 and seats upon a seat 51. Liquid from a reservoir 21 flows through a port 23 in end cover 15 into pump suction chamber 14a and from there through inlet ports 15a directly and inlet ports 30a indirectly via an axial passageway 25 and radial ports 26 in the power input shaft 13 into the pumping chamber and is discharged from the pumping chamber through ports 15b, 30b to a discharge chamber 14. The valve 33 is formed with a reduced diameter portion 41 to provide a restricted flow passage 52 leading to an annular chamber 43 communicating with an outlet 17 connected to the system being supplied and a land 42 whose opposite faces communicate with each other via valve member ducts 56, 55, 57. As pump speed reaches a predetermined value the valve member 33 is unseated. With increasing pump speed above this value the valve is progressively moved rightwardly whence liquid at high pressure and speed passes from the discharge chamber 14 into the inlet chamber 14a and into the axial passageway 25 to reduce the supply to the system and also induce liquid from the reservoir 21 into the inlet chamber 14a. When the speed increases still further such that the valve portion 41 overlies the outlet 17, the resulting increment in flow through the by pass exceeds the increment in delivery into the outlet 17 at the same pump speed, so a reduction of flow to the system takesplacedespite increased pump speed resulting in flow "droop." On increase in pressure in the system, the pressure downstream of the restricted flow passage 52 increases relative to that upstream thereof to move the valve member 33 towards closure to reduce the amount of liquid being by-passed and increase flow to the system. In the event of pressure in the system exceeding a predetermined value a spring-loaded loose ball valve 62 is unseated to connect the system to the reservoir 21. This results in a reduction in pressure in the chamber 43 and behind the land 42 to permit further rightward movement of the valve member 33 to reduce further flow to the system. Various modifications of the valve member 33 are described. The loose ball pressure relief valve instead of being housed within the valve member 33 may be a separate valve.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US579930A US3415194A (en) | 1966-09-16 | 1966-09-16 | Pump |
Publications (1)
Publication Number | Publication Date |
---|---|
ES345101A1 true ES345101A1 (en) | 1968-11-16 |
Family
ID=24318928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES345101A Expired ES345101A1 (en) | 1966-09-16 | 1967-09-15 | Pump |
Country Status (8)
Country | Link |
---|---|
US (1) | US3415194A (en) |
CH (1) | CH482117A (en) |
DE (1) | DE1653844C3 (en) |
DK (1) | DK136876B (en) |
ES (1) | ES345101A1 (en) |
GB (1) | GB1201389A (en) |
NO (1) | NO120967B (en) |
SE (1) | SE323288B (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3547559A (en) * | 1968-01-17 | 1970-12-15 | Bosch Gmbh Robert | Fluid flow control system |
US3522999A (en) * | 1968-11-08 | 1970-08-04 | White Motor Corp | Pump unloading valve |
DE2219587A1 (en) * | 1972-04-21 | 1973-10-25 | Teves Gmbh Alfred | VINGE CELL PUMP |
DE2312607C2 (en) * | 1973-03-14 | 1974-12-19 | Deutsche Vergaser Gmbh & Co Kg, 4040 Neuss | Diaphragm air pump working as a speed sensor |
US4213744A (en) * | 1978-03-03 | 1980-07-22 | Eaton Corporation | Hydraulic pump and improved by-pass flow means therefor |
JPS56156489A (en) * | 1980-05-06 | 1981-12-03 | Jidosha Kiki Co Ltd | Oil pump |
US4420290A (en) * | 1981-05-07 | 1983-12-13 | Trw Inc. | Power steering pump |
EP0151657A1 (en) * | 1984-02-04 | 1985-08-21 | Vickers Systems GmbH | Vane pump, especially for power steering |
JPH0623752Y2 (en) * | 1987-11-26 | 1994-06-22 | 株式会社ユニシアジェックス | Vane pump |
WO1995012069A1 (en) * | 1993-10-29 | 1995-05-04 | Lancer Corporation | Relief valve seat for positive displacement pump |
US6413064B1 (en) * | 1998-08-13 | 2002-07-02 | Luk Fahrzeug-Hydraulik Gmbh & Co. Kg | Pump |
DE102015209833A1 (en) * | 2015-05-28 | 2016-12-01 | Eckerle Industrie-Elektronik Gmbh | gear machine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3009420A (en) * | 1961-11-21 | Slipper pump | ||
US3110266A (en) * | 1955-02-24 | 1963-11-12 | William T Livermore | Hydraulic pump and control valve assembly |
US3103891A (en) * | 1959-10-01 | 1963-09-17 | Roper Hydraulics Inc | Unloading relief valve |
US3146720A (en) * | 1961-12-06 | 1964-09-01 | Dresser Ind | Pressure relief means for pump |
US3167020A (en) * | 1963-09-27 | 1965-01-26 | Gen Motors Corp | Pulsating power unit devices |
US3253607A (en) * | 1964-06-10 | 1966-05-31 | Trw Inc | Combination pump and flow regulator |
US3349714A (en) * | 1965-10-11 | 1967-10-31 | Ford Motor Co | Power steering pump |
-
1966
- 1966-09-16 US US579930A patent/US3415194A/en not_active Expired - Lifetime
-
1967
- 1967-08-23 CH CH1184467A patent/CH482117A/en not_active IP Right Cessation
- 1967-09-08 GB GB41238/67A patent/GB1201389A/en not_active Expired
- 1967-09-13 DK DK459167AA patent/DK136876B/en unknown
- 1967-09-14 NO NO169727A patent/NO120967B/no unknown
- 1967-09-14 SE SE12687/67A patent/SE323288B/xx unknown
- 1967-09-15 ES ES345101A patent/ES345101A1/en not_active Expired
- 1967-09-18 DE DE1653844A patent/DE1653844C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
SE323288B (en) | 1970-04-27 |
DE1653844C3 (en) | 1980-05-22 |
US3415194A (en) | 1968-12-10 |
NO120967B (en) | 1970-12-28 |
CH482117A (en) | 1969-11-30 |
DK136876C (en) | 1978-05-16 |
DK136876B (en) | 1977-12-05 |
DE1653844A1 (en) | 1971-06-09 |
GB1201389A (en) | 1970-08-05 |
DE1653844B2 (en) | 1979-09-13 |
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