GB1520359A - Refrigeration system - Google Patents

Refrigeration system

Info

Publication number
GB1520359A
GB1520359A GB4324576A GB4324576A GB1520359A GB 1520359 A GB1520359 A GB 1520359A GB 4324576 A GB4324576 A GB 4324576A GB 4324576 A GB4324576 A GB 4324576A GB 1520359 A GB1520359 A GB 1520359A
Authority
GB
United Kingdom
Prior art keywords
pressure
line
valve
receiver
defrosting
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
GB4324576A
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.)
Emhart Industries Inc
Original Assignee
Emhart Industries Inc
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 Emhart Industries Inc filed Critical Emhart Industries Inc
Publication of GB1520359A publication Critical patent/GB1520359A/en
Expired legal-status Critical Current

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
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity

Abstract

1520359 Defrosting EMHART INDUSTRIES Inc 19 Oct 1976 [24 Dec 1975] 43245/76 Heading F4H A refrigeration system comprises compressors 10, 12, 14, a discharge line 18, a condenser 20, a receiver 30, expansion valves 36, 38 associated with evaporators 40, 42, a return line 16, and a defrost system whereby hot gaseous refrigerant from the receiver 30 is able to pass selectively to either evaporator via a line 50. The refrigeration system includes pressure control means 48, in the form of a solenoid-actuated valve 86 in parallel with a check valve 88, in order to modulate the pressure lines 28, 32 and 34 whereby during defrosting the pressure in line 28 is greater than the pressure in lines 32 and 34. In normal operation, valve 86 is open, but when one of the evaporators requires defrosting, valve 86 is closed, forcing refrigerant through check valve 88 which is set at a predetermined value. The pressure differential created extends through the receiver 30, the line 50, and the respective solenoid-operated defrost valve 76, 78, to allow hot gas to flow in the reverse direction through the evaporator which requires defrosting. The system also includes a pressure reducing valve 54 in a receiver line 52 in order to maintain the refrigerant pressure in line 18 at a value always equal to or greater than the refrigerant pressure in the receiver. A heat reclaiming coil 56 may also be included in the system.
GB4324576A 1975-12-24 1976-10-19 Refrigeration system Expired GB1520359A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64426375A 1975-12-24 1975-12-24

Publications (1)

Publication Number Publication Date
GB1520359A true GB1520359A (en) 1978-08-09

Family

ID=24584144

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4324576A Expired GB1520359A (en) 1975-12-24 1976-10-19 Refrigeration system

Country Status (3)

Country Link
DE (1) DE2646915A1 (en)
FR (1) FR2336646A1 (en)
GB (1) GB1520359A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131535A (en) * 1982-12-09 1984-06-20 Hussmann Corp Surge receiver control system for refrigeration systems
GB2405688A (en) * 2003-09-05 2005-03-09 Applied Design & Eng Ltd Refrigerator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231229A (en) * 1979-03-21 1980-11-04 Emhart Industries, Inc. Energy conservation system having improved means for controlling receiver pressure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131535A (en) * 1982-12-09 1984-06-20 Hussmann Corp Surge receiver control system for refrigeration systems
GB2405688A (en) * 2003-09-05 2005-03-09 Applied Design & Eng Ltd Refrigerator

Also Published As

Publication number Publication date
DE2646915A1 (en) 1977-07-07
FR2336646A1 (en) 1977-07-22

Similar Documents

Publication Publication Date Title
GB1520358A (en) Refrigeration system having hot gas defrost system
US3933004A (en) Refrigeration control systems
GB1485583A (en) Refrigeration system
GB1101268A (en) Air conditioning and heat pump systems
MX9603239A (en) High latent refrigerant control circuit for air conditioning system.
KR920008442A (en) Air conditioner
GB1522464A (en) Refrigeration system
US2960840A (en) Method and apparatus for defrosting a refrigeration system
IE61753B1 (en) Quench expansion value refrigeration circuit
GB1363939A (en) Cooling capacity control for compression expansion refrigeration
US4681297A (en) Adjustable pressure regulating solenoid valve
MX9603136A (en) Air conditioning system with subcooler coil and series expander devices.
GB1520359A (en) Refrigeration system
GB1524366A (en) Control and method for defrosting regrigeration systems
GB1127586A (en) Air cooling and dehumidification systems
US3033005A (en) Hot gas defrostable refrigeration system
GB1045093A (en) Reversible cycle refrigeration apparatus
GB727629A (en) Improvements in or relating to refrigeration systems
US2758446A (en) Two control two-temperature refrigerating system
GB1532222A (en) Combined refrigeration and water heating system
GB1038536A (en) Refrigeration system
GB1429873A (en) Air conditioning control system
GB1580997A (en) Refrigeration system utilizing saturated gaseous refrigerant for defrost purposes
GB842231A (en) Improvements in or relating to refrigerating apparatus for foodstuffs
GB1319368A (en) Process and apparatus for defrosting an evaporator

Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed