GB770362A - Improvements in or relating to refrigerating apparatus - Google Patents

Improvements in or relating to refrigerating apparatus

Info

Publication number
GB770362A
GB770362A GB445955A GB445955A GB770362A GB 770362 A GB770362 A GB 770362A GB 445955 A GB445955 A GB 445955A GB 445955 A GB445955 A GB 445955A GB 770362 A GB770362 A GB 770362A
Authority
GB
United Kingdom
Prior art keywords
switch
evaporator
defrosting
motor
compressor motor
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
GB445955A
Inventor
Graham Stevens Mccloy
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International 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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Priority to GB445955A priority Critical patent/GB770362A/en
Publication of GB770362A publication Critical patent/GB770362A/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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • F25D21/008—Defroster control by timer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2117—Temperatures of an evaporator
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/02—Sensors detecting door opening

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)

Abstract

770,362. Refrigerating. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Feb. 15, 1955, No. 4459/55. Class 29 In a refrigerator having an evaporator supplied with refrigerant by a motor compressor unit 16 the current to which is controlled by a switch 22 actuated in response to the temperature of the evaporator 15, heat is supplied to the evaporator for defrosting after a cumulative period of time during which the door is open at the same time as the compressor motor is energized, defrosting only taking place while the compressor motor is running. As shown a defrosting electric heater 8 heats refrigerant entering the evaporator as described in Specification 620,951 and the supply of current to the heater is controlled by a switch 28 constructed as described in Specification 678,075. Switch 28 is closed at the expiry of the predetermined period of time by a timer 43 the driving motor of which is in series with both a switch 51 closed only when the door is open and the switch 22 controlling the compressor motor. Switch 28 is opened after defrosting by a bellows 48 actuated by a thermal bulb 50 responsive to the temperature of the suction pipe 20. The circuit is such that switch 28 cannot be moved to the closed position while the compressor motor is starting, save in exceptional circumstances, thus avoiding overloading of the supply current: Specification 568,337 also is referred to.
GB445955A 1955-02-15 1955-02-15 Improvements in or relating to refrigerating apparatus Expired GB770362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB445955A GB770362A (en) 1955-02-15 1955-02-15 Improvements in or relating to refrigerating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB445955A GB770362A (en) 1955-02-15 1955-02-15 Improvements in or relating to refrigerating apparatus

Publications (1)

Publication Number Publication Date
GB770362A true GB770362A (en) 1957-03-20

Family

ID=9777563

Family Applications (1)

Application Number Title Priority Date Filing Date
GB445955A Expired GB770362A (en) 1955-02-15 1955-02-15 Improvements in or relating to refrigerating apparatus

Country Status (1)

Country Link
GB (1) GB770362A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003098134A1 (en) * 2002-05-16 2003-11-27 BSH Bosch und Siemens Hausgeräte GmbH Freezer comprising a defrost function and operating method therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003098134A1 (en) * 2002-05-16 2003-11-27 BSH Bosch und Siemens Hausgeräte GmbH Freezer comprising a defrost function and operating method therefor
US7320226B2 (en) 2002-05-16 2008-01-22 Bsh Bosch Und Siemens Hausgeraete Gmbh Freezer with defrost function and method for operating the freezer

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