EP0403838B1 - Circuit de commande pour des enceintes à des températures différentes en particulier des réfrigérateurs ménagers - Google Patents

Circuit de commande pour des enceintes à des températures différentes en particulier des réfrigérateurs ménagers Download PDF

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Publication number
EP0403838B1
EP0403838B1 EP90110175A EP90110175A EP0403838B1 EP 0403838 B1 EP0403838 B1 EP 0403838B1 EP 90110175 A EP90110175 A EP 90110175A EP 90110175 A EP90110175 A EP 90110175A EP 0403838 B1 EP0403838 B1 EP 0403838B1
Authority
EP
European Patent Office
Prior art keywords
thermostat
compartment
refrigeration compartment
refrigerated environment
freezer compartment
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 - Lifetime
Application number
EP90110175A
Other languages
German (de)
English (en)
Other versions
EP0403838A3 (fr
EP0403838A2 (fr
Inventor
Marco Cavallini
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.)
OCEAN SpA
Original Assignee
OCEAN SpA
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Filing date
Publication date
Application filed by OCEAN SpA filed Critical OCEAN SpA
Publication of EP0403838A2 publication Critical patent/EP0403838A2/fr
Publication of EP0403838A3 publication Critical patent/EP0403838A3/fr
Application granted granted Critical
Publication of EP0403838B1 publication Critical patent/EP0403838B1/fr
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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/065—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return
    • F25D2317/0653—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return through the mullion
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/04—Refrigerators with a horizontal mullion

Definitions

  • This invention relates to a refrigerated environment, in particular a domestic refrigerator of the known no-frost type, of the type described in the preamble of the main claim.
  • a refrigerated environment is known from GB-A-1 485 666.
  • a domestic refrigerator of the type comprising a single cabinet containing a freezer compartment and a refrigeration compartment
  • the invention is equally applicable to any other type of refrigerated environment such as large industrial cold rooms comprising a freezer compartment and a refrigeration compartment for, in this latter case, preserving for example fresh meat.
  • the refrigerated environment comprises a single fan associated with a single evaporator located in the freezer compartment and operated by a single compressor under the control of a single thermostat provided in the freezer compartment.
  • the temperature in the refrigeration compartment is controlled on the basis of the temperature in the freezer compartment, this control being effected mainly by two methods which however are of complex implementation and rather high cost.
  • One of these methods consists of providing in the duct which delivers air to the refrigeration compartment from the evaporator bank a further fan which operates intermittently under the control of a thermostat located in the refrigeration compartment (see, for instance, US-A-3 119 240). As stated, this method therefore has additional cost and maintenance.
  • the other method consists of dividing the constant air delivery from the evaporator bank by a valve also associated with a thermostat located in the refrigeration compartment.
  • An object of the present invention is to provide a refrigerated environment, in particular domestic refrigerators, which does not suffer from the drawbacks of conventional refrigerated environments or refrigerators.
  • a further object of the invention is to provide a refrigerated environment of extremely simple conception and thus of high reliability.
  • the refrigerator indicated overall by 1, comprises a first freezer compartment 3 and a second refrigeration compartment 4 in a single cabinet.
  • an evaporator unit 5 of the finned type associated with a fan 6.
  • the refrigeration circuit also comprises a compressor 7 and condenser 8 with its own capillary tube (not shown).
  • a suitably sized duct 10 is provided aligned with the fan 4 in correspondence with the separator baffle between the compartments 3 and 4 to deliver air taken from the evaporator 5 into said compartment 4.
  • the air drawn in from the evaporator 5 is recirculated through the refrigeration compartment 4 and returned to the evaporator via slits 11.
  • a first thermostat 12 which based on its set temperature controls the operation of both the compressor 7 and fan 6.
  • the temperature in the refrigeration compartment 4 is controlled by a second thermostat, the sensitive part 13 of which is advantageously located in the inner lower corner of said refrigeration compartment 4, said thermostat 13 being of fixed or adjustable setting.
  • the first thermostat 12 measures the temperature in the freezer compartment 3 and based on this temperature either operates or halts the compressor 7 and fan 6.
  • the temperature in the refrigeration compartment 4 depends on the quantity of cold air fed into said refrigeration compartment. It should be noted that the size of the duct 10 is calculated to always ensure in the refrigeration compartment 4 a suitably cold temperature of the order of between +3°C and +7°C, and advantageously +5°C.
  • thermostat 13 If the thermostat 13 detects too cold a temperature in the refrigeration compartment 4 (for example because the units 6 and 7 have remained operating for too long because new foods have been placed in the freezer compartment 3), said thermostat acts in the sense of interrupting the electrical circuit of the electrically driven fan 6 alone. When the temperature in the refrigeration compartment 4 again attains a predetermined value the thermostat 13 closes said electrical circuit.
  • the thermostat 13 inhibits any flow of cold air into the refrigeration compartment 4 and thus prevents its temperature becoming undesirably low even when the other thermostat 12 continues to require cold, thus operating the compressor 7 alone.

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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Claims (7)

  1. Enceinte réfrigérée, en particulier de réfrigérateur ménager du type à dégivrage automatique, comprenant un compartiment de congélation (3), un compartiment de réfrigération (4), une unité d'évaporation (5) positionnée dans ledit compartiment de congélation, un ventilateur unique (6) commandé par thermostat et associé à ladite unité d'évaporation, une unité de compression (7) commandée par thermostat et commandant ladite unité d'évaporation, la commande thermostatique étant assurée par un thermostat (12) situé dans un compartiment de congélation et par un autre thermostat (13) situé dans le compartiment de réfrigération, un condenseur (8), un conduit (10) permettant le passage d'air depuis le compartiment de congélation (3) vers le compartiment de réfrigération (4), le thermostat (13) situé dans ledit compartiment de réfrigération (4) commandant uniquement le ventilateur unique (6), caractérisée en ce que le thermostat (12) situé dans le compartiment de congélation (3) commande à la fois le ventilateur unique (6) et l'unité de compression (7).
  2. Enceinte réfrigérée selon la revendication 1, caractérisé en ce que ledit autre thermostat (13) est placé à l'endroit le plus froid du compartiment de réfrigération (4), c'est-à-dire dans un coin inférieur dudit compartiment de réfrigération.
  3. Enceinte réfrigérée selon la revendication 2, caractérisée en ce que ledit autre thermostat (13) est du type à réglage fixe.
  4. Enceinte réfrigérée selon la revendication 2, caractérisée en ce que ledit autre thermostat (13) est réglé pour déclencher entre +1 °C et +3 °C, de préférence +2 °C, et pour enclencher entre +3 °C et +6 °C, de préférence +5 °C.
  5. Enceinte réfrigérée selon la revendication 2, caractérisée en ce que ledit autre thermostat (13) est du type à réglage variable.
  6. Enceinte réfrigérée selon la revendication 1, caractérisée en ce que le conduit (10) permettant le passage d'air depuis le compartiment de congélation (3) vers le compartiment de réfrigération (4) est dimensionné de façon à assurer en permanence une température adaptée dans le compartiment de réfrigération (4), comprise entre +3 °C et +7 °C environ, et de préférence égale à +5 °C.
  7. Enceinte réfrigérée selon la revendication 1, caractérisée en ce que le ventilateur unique (6) est placé dans le compartiment de congélation (3) de façon à assurer la circulation de l'air dans les deux compartiments (3, 4).
EP90110175A 1989-06-23 1990-05-29 Circuit de commande pour des enceintes à des températures différentes en particulier des réfrigérateurs ménagers Expired - Lifetime EP0403838B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8920970A IT1230908B (it) 1989-06-23 1989-06-23 Circuito di controllo ambienti a temperature differenziate, in particolare frigoriferi domestici.
IT2097089 1989-06-23

Publications (3)

Publication Number Publication Date
EP0403838A2 EP0403838A2 (fr) 1990-12-27
EP0403838A3 EP0403838A3 (fr) 1991-03-13
EP0403838B1 true EP0403838B1 (fr) 1994-02-23

Family

ID=11174790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90110175A Expired - Lifetime EP0403838B1 (fr) 1989-06-23 1990-05-29 Circuit de commande pour des enceintes à des températures différentes en particulier des réfrigérateurs ménagers

Country Status (3)

Country Link
EP (1) EP0403838B1 (fr)
DE (1) DE69006780D1 (fr)
IT (1) IT1230908B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102632586B1 (ko) 2016-09-29 2024-02-02 엘지전자 주식회사 냉장고
KR102604833B1 (ko) 2016-09-29 2023-11-22 엘지전자 주식회사 냉장고

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3119240A (en) * 1962-06-19 1964-01-28 Philco Corp Refrigeration apparatus with defrost means
US3455119A (en) * 1968-02-16 1969-07-15 Gen Motors Corp Plural compartment high humidity domestic refrigerator
US4009591A (en) * 1976-01-02 1977-03-01 General Electric Company Single evaporator, single fan combination refrigerator with independent temperature controls
GB1485666A (en) * 1976-02-20 1977-09-14 Lec Refrigeration Ltd Dual-compartment refrigerators

Also Published As

Publication number Publication date
EP0403838A3 (fr) 1991-03-13
EP0403838A2 (fr) 1990-12-27
IT8920970A0 (it) 1989-06-23
DE69006780D1 (de) 1994-03-31
IT1230908B (it) 1991-11-08

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