EP0027754A2 - Ein Kältemittel benützende mit einem Abtausystem versehene Wärmeaustauscheinheit - Google Patents

Ein Kältemittel benützende mit einem Abtausystem versehene Wärmeaustauscheinheit Download PDF

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Publication number
EP0027754A2
EP0027754A2 EP80401395A EP80401395A EP0027754A2 EP 0027754 A2 EP0027754 A2 EP 0027754A2 EP 80401395 A EP80401395 A EP 80401395A EP 80401395 A EP80401395 A EP 80401395A EP 0027754 A2 EP0027754 A2 EP 0027754A2
Authority
EP
European Patent Office
Prior art keywords
evaporator
defrosting
compressor
refrigerant
heat exchange
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Withdrawn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
EP80401395A
Other languages
English (en)
French (fr)
Other versions
EP0027754A3 (de
Inventor
Jules Leveugle
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0027754A2 publication Critical patent/EP0027754A2/de
Publication of EP0027754A3 publication Critical patent/EP0027754A3/de
Withdrawn legal-status Critical Current

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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
    • F25B41/00—Fluid-circulation arrangements

Definitions

  • the present invention relates to a refrigerant heat exchange assembly.
  • a refrigerant heat exchange assembly or system such as a heat pump or a refrigerating machine usually comprises in a closed circuit a compressor which, sucking this refrigerant in gaseous form from an evaporator, compresses it, discharges it in a condenser where the fluid turns into liquid and gives up heat, then in said evaporator where said fluid, by relaxing, resumes its gaseous form, gives cold, and returns again to the compressor under the suction of the latter this to start another cycle.
  • frost constitutes a thermal resistance which impedes the heat exchange between the refrigerant in the evaporator and the external environment.
  • the present invention intended to avoid this drawback, provides improvements to known systems and makes it possible to produce an assembly in which the defrosting of the evaporator is carried out only with the compressor stopped and according to the principle of the cold wall by means refrigerant in gaseous form coming from a reservoir, and without forcing the condensed liquid to return to this reservoir.
  • a heat exchange assembly with refrigerant applicable to a heat pump or a refrigerating machine produced according to the invention, and having in a closed circuit, successively a compressor, a condenser, a collecting tank for refrigerant, a pressure reducer, an evaporator, an anti-blow bottle includes, in this refrigeration circuit, a defrosting system allowing defrosting of its evaporator by stopping its motorbike compressor by admission into this evaporator of the gaseous refrigerant coming from its collecting tank, by maintaining in this evaporator of the refrigerant admitted during the defrosting, and restarting for normal operation at the end of defrosting by stopping the current of gaseous refrigerant coming from this collecting tank and by starting his compressor motor.
  • the defrosting operation is carried out as follows: the compressor 1 is stopped; the valve 8 is open which puts the high pressure part in communication with the low pressure part of the circuit.
  • the liquid contained in the reservoir 3 then begins to boil under the effect of the vacuum and emits vapors which come to condense in the tubes of the evaporator 5 by giving them heat. This heat melts the frost that surrounds these evaporator tubes.
  • tap 8 is closed and the compressor 1 is restarted.
  • the liquid present in the evaporator 5 is then gradually eliminated, either by evaporation, or by entrainment under the effect of the current of the gaseous fluid.
  • the liquid thus entrained is retained in the anti-blow bottle 6 which avoids any damage to the compressor 1.
  • the assembly then gradually returns to its normal operating mode.
  • the interior volume of the evaporator 5, the volume of the reservoir 3, the volume of the anti-cut liquid bottle 6 and the quantity of refrigerant are determined, mutually, in a manner usual to obtain a complete defrosting of this evaporator 5 for selected durations of normal operation of the system and defrosting of its evaporator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)
EP80401395A 1979-10-19 1980-10-02 Ein Kältemittel benützende mit einem Abtausystem versehene Wärmeaustauscheinheit Withdrawn EP0027754A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7926047A FR2468087A1 (fr) 1979-10-19 1979-10-19 Ensemble d'echange thermique a fluide frigorigene, muni d'un systeme de degivrage
FR7926047 1979-10-19

Publications (2)

Publication Number Publication Date
EP0027754A2 true EP0027754A2 (de) 1981-04-29
EP0027754A3 EP0027754A3 (de) 1981-12-16

Family

ID=9230855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401395A Withdrawn EP0027754A3 (de) 1979-10-19 1980-10-02 Ein Kältemittel benützende mit einem Abtausystem versehene Wärmeaustauscheinheit

Country Status (4)

Country Link
EP (1) EP0027754A3 (de)
DK (1) DK442180A (de)
FR (1) FR2468087A1 (de)
NO (1) NO803119L (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1017516A (fr) * 1950-03-07 1952-12-11 Chambre froide et étuve combinées
US3343375A (en) * 1965-06-23 1967-09-26 Lester K Quick Latent heat refrigeration defrosting system
US3427819A (en) * 1966-12-22 1969-02-18 Pet Inc High side defrost and head pressure controls for refrigeration systems
FR1571875A (de) * 1967-07-07 1969-06-20
FR2000797A1 (de) * 1968-01-26 1969-09-12 Bodcher Vilhelm
US3645109A (en) * 1970-03-16 1972-02-29 Lester K Quick Refrigeration system with hot gas defrosting
US3844131A (en) * 1973-05-22 1974-10-29 Dunham Bush Inc Refrigeration system with head pressure control
FR2360053A1 (fr) * 1976-07-28 1978-02-24 Leveugle Jules Systeme d'echange thermique a fluide frigorigene

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747099C (de) * 1937-12-04 1944-09-08 Ahlborn E Ag Verfahren und Vorrichtung zum Abtauen der Luftkuehler von Kaelteanlagen
US2713249A (en) * 1953-04-13 1955-07-19 Fred J Schordine Liquid defrosting system and the like
US3677025A (en) * 1971-01-13 1972-07-18 Borg Warner Defrosting arrangement and method for a refrigeration system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1017516A (fr) * 1950-03-07 1952-12-11 Chambre froide et étuve combinées
US3343375A (en) * 1965-06-23 1967-09-26 Lester K Quick Latent heat refrigeration defrosting system
US3427819A (en) * 1966-12-22 1969-02-18 Pet Inc High side defrost and head pressure controls for refrigeration systems
FR1571875A (de) * 1967-07-07 1969-06-20
FR2000797A1 (de) * 1968-01-26 1969-09-12 Bodcher Vilhelm
US3645109A (en) * 1970-03-16 1972-02-29 Lester K Quick Refrigeration system with hot gas defrosting
US3844131A (en) * 1973-05-22 1974-10-29 Dunham Bush Inc Refrigeration system with head pressure control
FR2360053A1 (fr) * 1976-07-28 1978-02-24 Leveugle Jules Systeme d'echange thermique a fluide frigorigene

Also Published As

Publication number Publication date
NO803119L (no) 1981-04-21
EP0027754A3 (de) 1981-12-16
DK442180A (da) 1981-04-20
FR2468087A1 (fr) 1981-04-30
FR2468087B1 (de) 1983-08-19

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