GB895227A - Improvements in refrigerating system including auxiliary hot gas defrosting circuit - Google Patents

Improvements in refrigerating system including auxiliary hot gas defrosting circuit

Info

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
Application number
GB37552/58A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB895227A publication Critical patent/GB895227A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02Defrosting cycles
    • F25B47/022Defrosting 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.
GB37552/58A 1957-11-25 1958-11-21 Improvements in refrigerating system including auxiliary hot gas defrosting circuit Expired GB895227A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
US2281770A (en) Defrosting system
US3959986A (en) Heat-pump system for hot-water room-heating
US2688850A (en) Refrigeration system defrosting by controlled flow of gaseous refrigerant
US3365902A (en) Reverse cycle refrigeration system
US2970816A (en) Defrost arrangement for air conditioning apparatus
GB1265229A (en)
US2907181A (en) Hot gas defrosting refrigerating system
US2979917A (en) Cooling arrangement for hermetically sealed refrigerant compressor
KR890007030A (en) Refrigerant Heating Air Conditioner
US2943457A (en) Control system for winter operation of air-cooled condensers
US2627730A (en) Defrostable refrigeration system
GB895227A (en) Improvements in refrigerating system including auxiliary hot gas defrosting circuit
GB1224345A (en) Defrosting device for a refrigerating machine
US2959937A (en) Refrigeration system for air conditioning units
GB720779A (en) Improvements in heat pump water heater
US2745255A (en) Defrosting refrigerating apparatus
US2895307A (en) Refrigerating system including a hot gas defrosting circuit
US3031859A (en) Refrigerating apparatus with defrosting means
US2058908A (en) Refrigerating apparatus
US3003330A (en) Heat pump defrosting unit
GB894011A (en) Heat pump
US2169795A (en) Water-cooling apparatus and method
GB898959A (en) Improvements in refrigerating system including a hot gas defrosting circuit
GB620951A (en) Improvements in or relating to refrigerating apparatus
JPS5851579Y2 (en) Heated expansion valve in refrigeration circuit