GB725413A - Improvements in and relating to unloaders for refrigerant compressors - Google Patents
Improvements in and relating to unloaders for refrigerant compressorsInfo
- Publication number
- GB725413A GB725413A GB508/53A GB50853A GB725413A GB 725413 A GB725413 A GB 725413A GB 508/53 A GB508/53 A GB 508/53A GB 50853 A GB50853 A GB 50853A GB 725413 A GB725413 A GB 725413A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compressor
- pressure
- casing
- port
- annulus
- 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
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
- F04C28/24—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
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
725,413. Refrigerating. GENERAL ELECTRIC CO. Jan. 7, 1953 [Jan. 10, 1952], No. 508/53. Class 29. Relates to compression refrigerating systems wherein the rotary compressor 2 is unloaded at starting by allowing the discharge pressure to leak into the suction side whenever the compressor stops, by preventing this increased suction pressure from reaching the evaporator 4 by an automatic check valve 36 and by providing between the check valve and the compressor a receiver 43 of sufficient volume to allow the compressor to reach working speed before the intake pressure is substantially lowered. According to the invention the compressor comprises an annulus 11 within which rotates an eccentric 17 wiping against a blade 21 working against a spring 23 and sliding in a radial slot 18 in the annulus and the blade is provided with an oil seal maintained bv a cup 22 at the outer end of the slot. When the compressor stops, the high pressure in the casing 7 blows the oil seal into the suction port 19 to equalize the pressure. The compressor discharges into a chamber 14 whence the mixed lubricant and vapour pass through a pipe 26 into a separator space 27. Lubricant drains therefrom through a port 28 into a trough 29 and then through, a port 31 into cup 22 the overflow from which runs into the bottom of the casing. Oil is withdrawn from the casing through a hole 33 and passes upgrooves 32, 34, 35 in the rotating parts before discharge into the trough 29.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US725413XA | 1952-01-10 | 1952-01-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB725413A true GB725413A (en) | 1955-03-02 |
Family
ID=22108259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB508/53A Expired GB725413A (en) | 1952-01-10 | 1953-01-07 | Improvements in and relating to unloaders for refrigerant compressors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB725413A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128104A (en) * | 2020-08-24 | 2020-12-25 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration cycle system |
| CN114935223A (en) * | 2022-06-08 | 2022-08-23 | 青岛海信日立空调***有限公司 | Air source heat pump system |
-
1953
- 1953-01-07 GB GB508/53A patent/GB725413A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128104A (en) * | 2020-08-24 | 2020-12-25 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration cycle system |
| CN112128104B (en) * | 2020-08-24 | 2023-05-12 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration cycle system |
| CN114935223A (en) * | 2022-06-08 | 2022-08-23 | 青岛海信日立空调***有限公司 | Air source heat pump system |
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