SE7501980L - - Google Patents
Info
- Publication number
- SE7501980L SE7501980L SE7501980A SE7501980A SE7501980L SE 7501980 L SE7501980 L SE 7501980L SE 7501980 A SE7501980 A SE 7501980A SE 7501980 A SE7501980 A SE 7501980A SE 7501980 L SE7501980 L SE 7501980L
- Authority
- SE
- Sweden
- Prior art keywords
- valve
- chamber
- ducts
- feb
- connect
- Prior art date
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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/10—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
- F04C28/12—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
- F04C28/125—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves with sliding valves controlled by the use of fluid other than the working fluid
-
- 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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids 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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
1461039 Rotary positive-displacement fluidmachines KUHLAUTOMAT VEB 21 Feb 1975 [22 Feb 1974] 7439/75 Heading E1F In a meshing-screw compressor, Figs. 1, 3 and 4, having male and female rotors 7, 8 and a "slide valve" 11 to regulate the delivery rate, ducts 19, 20 in the valve and a "bracket" 18 connect a delivery chamber 5 to a contracting chamber between the rotor lands and lobes, so as to equalize the pressures and thus reduce noise, when the valve is at or near to its minimum delivery position. The positions of the ducts 19, 20 may be in effect reversed, Figs. 2 and 5 (not shown). Alternatively, the ducts 19, 20 are arranged to connect the chamber 5 to a suction chamber 4 when the valve is at or near to its minimum delivery position, Fig. 6 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD17674874A DD110920A1 (en) | 1974-02-22 | 1974-02-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7501980L true SE7501980L (en) | 1975-08-25 |
SE398912B SE398912B (en) | 1978-01-23 |
Family
ID=5494713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7501980A SE398912B (en) | 1974-02-22 | 1975-02-21 | POWER-CONTROLLED SCREW COMPRESSOR |
Country Status (9)
Country | Link |
---|---|
CS (1) | CS180815B1 (en) |
DD (1) | DD110920A1 (en) |
DE (1) | DE2501451C2 (en) |
DK (1) | DK139689B (en) |
FR (1) | FR2262210B3 (en) |
GB (1) | GB1461039A (en) |
NL (1) | NL184580C (en) |
SE (1) | SE398912B (en) |
SU (1) | SU962673A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54163416A (en) * | 1978-06-14 | 1979-12-26 | Hitachi Ltd | Screw compressor |
DE3414039A1 (en) * | 1984-04-13 | 1985-10-17 | Aerzener Maschinenfabrik Gmbh, 3251 Aerzen | ROOTS COMPRESSOR FOR COMPRESSING GAS SHAPED CONVEYOR MEDIUM |
DE10326466B4 (en) * | 2003-06-12 | 2016-03-17 | Gea Refrigeration Germany Gmbh | Slide with start unloading |
WO2008069789A1 (en) * | 2006-12-05 | 2008-06-12 | Carrier Corporation | Integral slide valve relief valve |
RU2538188C1 (en) * | 2013-08-20 | 2015-01-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Омский государственный технический университет" | Multipurpose spur displacement machine |
CN106151041B (en) * | 2016-08-22 | 2018-07-10 | 珠海格力电器股份有限公司 | Guiding valve and helical-lobe compressor and Screw chiller equipped with the guiding valve |
TWI666387B (en) * | 2017-10-17 | 2019-07-21 | 復盛股份有限公司 | compressor |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO117317B (en) * | 1964-03-20 | 1969-07-28 | Svenska Rotor Maskiner Ab | |
US3367562A (en) * | 1966-06-23 | 1968-02-06 | Atlas Copco Ab | Means for unloading and controlling compressor units |
-
1974
- 1974-02-22 DD DD17674874A patent/DD110920A1/xx unknown
-
1975
- 1975-01-15 DE DE19752501451 patent/DE2501451C2/en not_active Expired
- 1975-02-03 NL NL7501233A patent/NL184580C/en not_active IP Right Cessation
- 1975-02-21 DK DK67575A patent/DK139689B/en unknown
- 1975-02-21 GB GB743975A patent/GB1461039A/en not_active Expired
- 1975-02-21 SE SE7501980A patent/SE398912B/en not_active IP Right Cessation
- 1975-02-21 SU SU752107744A patent/SU962673A1/en active
- 1975-02-21 CS CS115775A patent/CS180815B1/en unknown
- 1975-02-21 FR FR7505473A patent/FR2262210B3/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL7501233A (en) | 1975-08-26 |
DK67575A (en) | 1975-11-03 |
SE398912B (en) | 1978-01-23 |
DK139689C (en) | 1979-09-10 |
DK139689B (en) | 1979-03-26 |
FR2262210B3 (en) | 1977-10-28 |
CS180815B1 (en) | 1978-02-28 |
NL184580B (en) | 1989-04-03 |
DE2501451A1 (en) | 1975-08-28 |
SU962673A1 (en) | 1982-09-30 |
DD110920A1 (en) | 1975-01-12 |
GB1461039A (en) | 1977-01-13 |
NL184580C (en) | 1989-09-01 |
DE2501451C2 (en) | 1985-10-31 |
FR2262210A1 (en) | 1975-09-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 7501980-2 Effective date: 19910911 Format of ref document f/p: F |