GB895227A - Improvements in refrigerating system including auxiliary hot gas defrosting circuit - Google Patents
Improvements in refrigerating system including auxiliary hot gas defrosting circuitInfo
- Publication number
- GB895227A GB895227A GB37552/58A GB3755258A GB895227A GB 895227 A GB895227 A GB 895227A GB 37552/58 A GB37552/58 A GB 37552/58A GB 3755258 A GB3755258 A GB 3755258A GB 895227 A GB895227 A GB 895227A
- Authority
- GB
- United Kingdom
- Prior art keywords
- evaporator
- hot gas
- conduits
- conduit
- pipe
- 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
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
895,227. Refrigerating. GENERAL ELECTRIC CO. Nov. 21, 1958 [Nov. 25, 1957], No. 37552/58. Class 29. To defrost the evaporator 6 of a compression system, a hot gas conduit 23 from the high pressure side is led in heat exchange relation with the evaporator and condensing pressure is maintained in the conduit 23 by a restrictor 25. The compressor 11 and its motor 10 are disposed in a sealed casing 12 under suction pressure and acting as a lubricant reservoir. Compressed refrigerant flows through pipe 16, condenser 2 and capillary restrictor 3 to the evaporator 6 which terminates in an accumulator 7 from which suction pipe 5 leads to the casing 12, pipe 5 being in heat exchange relation at 8 with the capillary restrictor 3. To defrost a valve 20 is opened and hot gas flows through pipe 18 to a conduit 22 in heat exchange with accumulator 7 and then to conduit 23. Liquid refrigerant formed in conduits 22, 23 flows through restrictor 25 to suction pipe 5 and thence into case 12 where it is evaporated by the heat of the compressor and motor. As shown, valve 20 is controlled by a unit 34 which initiates defrosting, e.g. by a timer and terminates it when the evaporator temperature, detected by thermal bulb 35, rises sufficiently. Condenser fan 37 is energised in phase with the closing of valve 20 and the control is such that defrosting will only be initiated when the compressor motor is energized. As shown the evaporator is a rollbonded structure with the conduits 22, 23 formed therein but the conduits may be brazed to-the evaporator; alternatively the evaporator and the conduits may be constituted by a double-tube extrusion. To reduce the speed of defrosting, the conduits 22, 23 and the evaporator may be so disposed that the hot gas heats first the inlet end of the evaporator and last the accumulator and the hot gas may flow from the outlet of the condenser instead of from the compressor outlet.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US895227XA | 1957-11-25 | 1957-11-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB895227A true GB895227A (en) | 1962-05-02 |
Family
ID=22218102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37552/58A Expired GB895227A (en) | 1957-11-25 | 1958-11-21 | Improvements in refrigerating system including auxiliary hot gas defrosting circuit |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB895227A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007001284A1 (en) * | 2005-06-23 | 2007-01-04 | Carrier Corporation | Method for defrosting an evaporator in a refrigeration circuit |
CN102645021A (en) * | 2011-03-16 | 2012-08-22 | 江苏浴普太阳能有限公司 | Waste heat recovery system for compressor of heat pump water heater |
-
1958
- 1958-11-21 GB GB37552/58A patent/GB895227A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007001284A1 (en) * | 2005-06-23 | 2007-01-04 | Carrier Corporation | Method for defrosting an evaporator in a refrigeration circuit |
US8011192B2 (en) | 2005-06-23 | 2011-09-06 | Hill Phoenix, Inc. | Method for defrosting an evaporator in a refrigeration circuit |
CN102645021A (en) * | 2011-03-16 | 2012-08-22 | 江苏浴普太阳能有限公司 | Waste heat recovery system for compressor of heat pump water heater |
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