FR2362350A1 - DEVICE FOR DEFROSTING EVAPORATORS OF REFRIGERATION CIRCUITS, IN PARTICULAR HEAT PUMPS - Google Patents

DEVICE FOR DEFROSTING EVAPORATORS OF REFRIGERATION CIRCUITS, IN PARTICULAR HEAT PUMPS

Info

Publication number
FR2362350A1
FR2362350A1 FR7725329A FR7725329A FR2362350A1 FR 2362350 A1 FR2362350 A1 FR 2362350A1 FR 7725329 A FR7725329 A FR 7725329A FR 7725329 A FR7725329 A FR 7725329A FR 2362350 A1 FR2362350 A1 FR 2362350A1
Authority
FR
France
Prior art keywords
heat pumps
refrigeration circuits
defrosting evaporators
particular heat
evaporators
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.)
Withdrawn
Application number
FR7725329A
Other languages
French (fr)
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2362350A1 publication Critical patent/FR2362350A1/en
Withdrawn legal-status Critical Current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
    • 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
    • F25D21/02—Detecting the presence of frost or condensate

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)
  • Air-Conditioning For Vehicles (AREA)

Abstract

a. Dispositif pour dégivrer des évaporateurs de circuits frigorifiques, notamment de pompes de chaleur; b. Dispositif caractérisé en ce que le mécanisme de commande et/ou l'un ou les deux capteurs de valeurs de mesure sont, pour corriger le signal differentiel, soumis à l'action de moyens sensibles à la chaleur, ces moyens modifiant, en fonction de la température ambiante autour de l'évaporateur, le signal différentiel par rapport à l'écart de température effectif entre les points de mesure des capteurs, de telle sorte que l'opération de dégivrage commence pour un plus faible écart de température lorsque la température ambiante s'abaisse et inversement ; c. L'invention s'applique aux dispositifs pour dégivrer des évaporateurs de circuits frigorifiques, notamment de pompes de chaleur.at. Device for defrosting evaporators of refrigeration circuits, in particular heat pumps; b. Device characterized in that the control mechanism and / or one or both measurement value sensors are, in order to correct the differential signal, subjected to the action of heat-sensitive means, these means modifying, depending on the ambient temperature around the evaporator, the differential signal with respect to the effective temperature difference between the measuring points of the sensors, so that the defrost operation starts for a smaller temperature difference when the ambient temperature lowers and vice versa; vs. The invention applies to devices for defrosting evaporators of refrigeration circuits, in particular of heat pumps.

FR7725329A 1976-08-18 1977-08-18 DEVICE FOR DEFROSTING EVAPORATORS OF REFRIGERATION CIRCUITS, IN PARTICULAR HEAT PUMPS Withdrawn FR2362350A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762637129 DE2637129A1 (en) 1976-08-18 1976-08-18 DEVICE FOR DEFROSTING EVAPORATORS IN REFRIGERANT CIRCUITS, IN PARTICULAR OF HEAT PUMPS

Publications (1)

Publication Number Publication Date
FR2362350A1 true FR2362350A1 (en) 1978-03-17

Family

ID=5985716

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7725329A Withdrawn FR2362350A1 (en) 1976-08-18 1977-08-18 DEVICE FOR DEFROSTING EVAPORATORS OF REFRIGERATION CIRCUITS, IN PARTICULAR HEAT PUMPS

Country Status (5)

Country Link
DE (1) DE2637129A1 (en)
FR (1) FR2362350A1 (en)
GB (1) GB1569835A (en)
NL (1) NL7709087A (en)
SE (1) SE7709276L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492070A1 (en) * 1980-10-14 1982-04-16 Gen Electric DEGREASING CONTROL DEVICE FOR HEAT PUMP
EP0142663A2 (en) * 1983-09-20 1985-05-29 MAN Technologie Aktiengesellschaft Defrost control method and device for heat pumps

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3227604A1 (en) * 1981-07-29 1983-02-24 Olsberg Gesellschaft für Produktion und Absatz mbH, 5790 Brilon Automatic defrosting device for heat pump evaporators
DE3229160C2 (en) * 1982-08-04 1984-07-12 Siemens AG, 1000 Berlin und 8000 München Method for operating an air-to-water heat pump
DE3303054C2 (en) * 1983-01-29 1994-02-10 Ruhrgas Ag Signal generator for controlling the defrosting of the evaporator of a heat pump
DE3804267C1 (en) * 1988-02-11 1989-02-23 Friedhelm 5920 Bad Berleburg De Meyer
DE19507667A1 (en) * 1995-03-04 1996-09-05 Behr Gmbh & Co Method and circuit arrangement for the on / off control of the compressor of a motor vehicle air conditioning system
DE102006021374A1 (en) * 2006-05-08 2007-11-22 Liebherr-Hausgeräte Lienz Gmbh Cooling or freezing device has cooling or freezing compartment, that is limited to one or more sides by disc or that is locked by door or cover and device also has sensor for measuring parameters of air and disc

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2093835A (en) * 1934-06-30 1937-09-21 Gen Motors Corp Refrigerating apparatus
US2215057A (en) * 1938-11-03 1940-09-17 Penn Electric Switch Co Refrigerant system controller
US2216589A (en) * 1937-06-28 1940-10-01 Gen Motors Corp Refrigerating apparatus
US2325511A (en) * 1940-03-21 1943-07-27 Westinghouse Electric & Mfg Co Refrigeration apparatus
US2666298A (en) * 1950-11-01 1954-01-19 U S Thermo Control Co Method and means of defrosting a cold diffuser
US2968167A (en) * 1957-07-24 1961-01-17 Ranco Inc Defroster control
US2988896A (en) * 1957-02-01 1961-06-20 Carrier Corp Heat pump defrost control
US3359750A (en) * 1965-12-02 1967-12-26 Gen Motors Corp Refrigerator with defrost when necessary system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2093835A (en) * 1934-06-30 1937-09-21 Gen Motors Corp Refrigerating apparatus
US2216589A (en) * 1937-06-28 1940-10-01 Gen Motors Corp Refrigerating apparatus
US2215057A (en) * 1938-11-03 1940-09-17 Penn Electric Switch Co Refrigerant system controller
US2325511A (en) * 1940-03-21 1943-07-27 Westinghouse Electric & Mfg Co Refrigeration apparatus
US2666298A (en) * 1950-11-01 1954-01-19 U S Thermo Control Co Method and means of defrosting a cold diffuser
US2988896A (en) * 1957-02-01 1961-06-20 Carrier Corp Heat pump defrost control
US2968167A (en) * 1957-07-24 1961-01-17 Ranco Inc Defroster control
US3359750A (en) * 1965-12-02 1967-12-26 Gen Motors Corp Refrigerator with defrost when necessary system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492070A1 (en) * 1980-10-14 1982-04-16 Gen Electric DEGREASING CONTROL DEVICE FOR HEAT PUMP
EP0142663A2 (en) * 1983-09-20 1985-05-29 MAN Technologie Aktiengesellschaft Defrost control method and device for heat pumps
EP0142663A3 (en) * 1983-09-20 1985-07-03 M.A.N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft Defrost control method and device for heat pumps

Also Published As

Publication number Publication date
GB1569835A (en) 1980-06-18
DE2637129A1 (en) 1978-02-23
NL7709087A (en) 1978-02-21
SE7709276L (en) 1978-02-19

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