JPS57165694A - Refrigerant compressor - Google Patents
Refrigerant compressorInfo
- Publication number
- JPS57165694A JPS57165694A JP5201981A JP5201981A JPS57165694A JP S57165694 A JPS57165694 A JP S57165694A JP 5201981 A JP5201981 A JP 5201981A JP 5201981 A JP5201981 A JP 5201981A JP S57165694 A JPS57165694 A JP S57165694A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- switching valve
- closed
- valve
- pass
- 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
- 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
- F04C28/16—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 lift valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
PURPOSE:To effectively vary the discharge capacity of a refrigerant compressor by driving a closing valve which open/closes a by-pass hole by a refrigerant at the pressure slightly higher than that of the by-pass hole. CONSTITUTION:When the cooling load is low a switching valve 31 is closed to prevent the flow of pressurized refrigerant from a pressure hole 37 into a pressure chamber 27, and a closig valve 33 and a switching valve 28 are opened to connect a cylinder chamber R and a refrigerant piping 26 with a by-pass passage 27 thereby preventing the start of compression of the cylinder chamber R until a roller 6 passes a by-pass hole 32 and the volume of the cylinder chamber R at the start of compression is reduced to a half. When sufficient discharge capacity of the compressor 21 is required due to increase of the cooling load and the like the switching valve 31 is opening to allow the flow of pressurized refrigerant into the pressure chamber 29 and the closing valve 29 is closed while the switching valve 28 is also closed to prevent the leak of pressurized refrigerant into the by-pass passage 27.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5201981A JPS57165694A (en) | 1981-04-07 | 1981-04-07 | Refrigerant compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5201981A JPS57165694A (en) | 1981-04-07 | 1981-04-07 | Refrigerant compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57165694A true JPS57165694A (en) | 1982-10-12 |
Family
ID=12903094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5201981A Pending JPS57165694A (en) | 1981-04-07 | 1981-04-07 | Refrigerant compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57165694A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5954672A (en) * | 1982-09-22 | 1984-03-29 | 株式会社村田製作所 | Manufacture of high permittivity ceramic |
CN101839239A (en) * | 2009-03-20 | 2010-09-22 | 上海日立电器有限公司 | Digital rotor type compressor |
CN101839240A (en) * | 2009-03-20 | 2010-09-22 | 上海日立电器有限公司 | Rotor compressor with flexibly-changed blade backpressure |
-
1981
- 1981-04-07 JP JP5201981A patent/JPS57165694A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5954672A (en) * | 1982-09-22 | 1984-03-29 | 株式会社村田製作所 | Manufacture of high permittivity ceramic |
CN101839239A (en) * | 2009-03-20 | 2010-09-22 | 上海日立电器有限公司 | Digital rotor type compressor |
CN101839240A (en) * | 2009-03-20 | 2010-09-22 | 上海日立电器有限公司 | Rotor compressor with flexibly-changed blade backpressure |
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