EP0053589A2 - Kühlschrank - Google Patents

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Publication number
EP0053589A2
EP0053589A2 EP81830239A EP81830239A EP0053589A2 EP 0053589 A2 EP0053589 A2 EP 0053589A2 EP 81830239 A EP81830239 A EP 81830239A EP 81830239 A EP81830239 A EP 81830239A EP 0053589 A2 EP0053589 A2 EP 0053589A2
Authority
EP
European Patent Office
Prior art keywords
compartment
refrigerator
refrigerator according
period
temperature
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Withdrawn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
EP81830239A
Other languages
English (en)
French (fr)
Other versions
EP0053589A3 (de
Inventor
Luigi Alluto
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.)
Indesit Industria Elettrodomestici Italiana SpA
Original Assignee
Indesit Industria Elettrodomestici Italiana SpA
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 Indesit Industria Elettrodomestici Italiana SpA filed Critical Indesit Industria Elettrodomestici Italiana SpA
Publication of EP0053589A2 publication Critical patent/EP0053589A2/de
Publication of EP0053589A3 publication Critical patent/EP0053589A3/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Withdrawn legal-status Critical Current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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/006—Self-contained movable devices, e.g. domestic refrigerators with cold storage accumulators
    • 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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • 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
    • 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
    • F25D2400/30—Quick freezing

Definitions

  • the present invention relates to a refrigerator provided with a refrigerating system comprising at least one compressor device for refrigerant fluid, a condenser device for the refrigerant fluid leaving the compressor, at least one evaporator device for the refrigerant fluid coming from the condenser having first and second parts arranged in series and at least a first and a second freezing compartment associated with the two parts of the evaporator.
  • the invention applies principally to refrigerators provided with two refrigerated compartments, one for frozen foods and one for cold foods.
  • the object of the present invention is to demonstate the use of suitable means capable of increasing the thermal inertia of the system, in particular the use of eutectic plates which, placed in the cold food compartment near the evaporator during normal operation of the refrigerator,accumulate heat and then yield it up to the cold food compartment during"peak working loads"due to the needs of the freezer compartment, thus preventing the temperature in the cold food compartment from falling below a certain minimum value.
  • the present invention provides a refrigerator having a cooling system comprising at least one compressor device for the refrigerant fluid, a condenser device for the refrigerant fluid leaving the compressor, at least one evaporator device for the refrigerant fluid coming from the condenser, having first and second parts placed in series and at least a first and a second cooling compartment associated with the two parts of the evaporator, characterised in that there is inserted in the said second compartment at least one first element capable of storing heat during a first period of operation of the refrigerator and of yielding it up during a second period of operation, in which the heat storage capacity of said first element is such that, during the periods of working of the refrigerator in the said second period, the said first element is able to provide the said second compartment with heat in order to prevent the temperature within it from falling below a predetermined value.
  • Figure 1 shows a possible embodiment of the prefected refrigerator according to the present invention.
  • the cold food compartment is shown as 1 and the frozen food compartment as 2.
  • the refrigerant fluid condenser is shown as 3 and the evaporator for the said fluid,which is associated with the cold food compartment, is shown as 4.
  • a heat storage element in the form of a rectangular reservoir tank arranged under the evaporator 4.
  • This tank may be fixed or may be removable according to the manner of operation of the refrigerator itself, as will be explained in detail below.
  • the tank 5 is filled with a liquid which has a freezing point close to 0°, for example water.
  • This tank has dimensions such that, with regard to its depth, it does not project much beyond the front of the evaporator 4, its height being such as to allow it to be housed beneath the evaporator and its width being such as to allow it to be inserted in the space constituted by the compartment 1.
  • the liquid contained in the tank 5 has the purpose of yielding up all the latent heat of freezing of which it is capable, bringing it to the solid state, thus interposing an obstacle to the descent of the temperature in the compartment below zero degrees.
  • the delay in the lowering of the temperature in the cold food compartment introduced by the tank 5 is sufficient to allow the freezing operation within the freezer compartment to be completed without the temperature in the cold food compartment falling below zero and without having been forced to make it excessively large compared to that which the refrigeration system requires for normal operation.
  • the tank 5 has been arranged in the coldest part of the cold food compartment under the evaporator where it receives air falling from the evaporator, which may be several degrees below zero; thus the water in the tank 5 may freeze since it is surrounded by the current of cold air, and hence fulfills its function, without the temperature in the remaining part of the cold food compartment falling below zero (in particular in the space formed in the portion of the refrigerator where bottles containing water are usually kept).
  • the tank 5 not to have its back against the rear wall of the refrigerator but for there to be an air space which improves the heat exchange between the air falling from the evaporator and the liquid in the tank 5 which therefore must be ' made from a material which is a good heat conductor.
  • the tank 5 behaves in a dual manner compared with the known art. Indeed in normal operation, the plates of the known art absorbed frigories from the cooling system and yielded them up at times of greater working load of the system; the tank 5, on the contrary, in normal operation absorbs calories which are then, at the moment of greater working load, given up to the compartment.
  • the tank 5 may, as stated above, also be formed so as to be removable. This produces the advantage that when no need is foreseen for the freezing of fresh foods, the refrigerator has a greater storage capacity for foodstuff in the cold compartment.
  • the tank 5 which acts as a ballast is simultaneously also introduced into the cold food compartment; hence the higher its temperature the higher its functioning ability.
  • the fact that a thermal mass of considerable size is located in the cold food compartment may serve to keep a sufficiently low temperature for a longer period while waiting the re-connection of the electrical supply.
  • the operating time under "fast freezer” conditions for such apparatus is normally about 12 hours but for the first 6 hours there is no great danger of the cold food compartment falling below 0°C since it must first be cooled from the existing temperature (about 5°C to 0°C.
  • the tank 5 it is not necessary. for the tank 5 to.have a capacity such as to enable it to cope with frigories introduced into the cold food compartment for 12 hours of operation as a fast freezer it is however material for the purpose of dimensioning the said tank 5 to analyse this case as well.
  • the percentage volume occupied by the tank 5 varies from 1 to 3% of the total volume of the compartment.
  • the water contained therein is presumably at about 20 o C.
  • the water in addition to the latent heat of freezing, the water also gives up to the compartment the heat needed to cool it from 20°C to 0°C, which will be 20 Kcal per litre.
  • a further advantage lies in the facility of obtaining the desired results and in the economical nature of the means adopted.
  • eutectic plates may be used in the frozen food compartment with freezing points slightly below the temperature in this compartment as is widely illustrated in the known art.
  • part of the frigories necessary for freezing is given up by the; said eutectic plates whereby the time for which the refriqerator operates as a fast freezer is reduced.
  • the frigories yielded up during this operation by the second part of the evaporator to the cold food compartment is consequently also reduced and hence the tank 5 placed in the said compartment must provide fewer calories than is the case when the said eutectic plates are not placed in the freezer compartment whereby it may have a smaller heat capacity than in the previous case.

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)
EP81830239A 1980-12-01 1981-11-30 Kühlschrank Withdrawn EP0053589A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6882780 1980-12-01
IT68827/80A IT1130539B (it) 1980-12-01 1980-12-01 Armadio frigorifero perfezionato

Publications (2)

Publication Number Publication Date
EP0053589A2 true EP0053589A2 (de) 1982-06-09
EP0053589A3 EP0053589A3 (de) 1983-05-18

Family

ID=11310675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81830239A Withdrawn EP0053589A3 (de) 1980-12-01 1981-11-30 Kühlschrank

Country Status (2)

Country Link
EP (1) EP0053589A3 (de)
IT (1) IT1130539B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098052A2 (de) * 1982-06-26 1984-01-11 THORN EMI Domestic Appliances Limited Gefriereinrichtungen
EP0152155A2 (de) * 1984-02-15 1985-08-21 Koninklijke Philips Electronics N.V. Ausnehmbare Kältespeicherelemente für eine Gefriertruhe
EP0223743A1 (de) * 1985-10-23 1987-05-27 MERLONI ELETTRODOMESTICI S.p.A. Kältespeicherplatte für Gefriervorrichtungen
EP0794396A1 (de) * 1996-03-08 1997-09-10 Société d'Electromenager du Nord Selnor Gerät zur Erzeugung von Kälte mit Wärmetauscher mit Wärmespeicher
FR2745894A1 (fr) * 1996-03-08 1997-09-12 Selnor Echangeur de chaleur a accumulation pour appareil a generation de froid
ES2159455A1 (es) * 1997-08-25 2001-10-01 Aeg Hausgeraete Gmbh Aparato frigorifico con varias zonas de diferentes temperaturas.
WO2005093346A1 (en) * 2004-03-25 2005-10-06 Arcelik Anonim Sirketi A cooling device and a control method thereof
US7971443B2 (en) 2004-10-28 2011-07-05 Sharp Kabushiki Kaisha Refrigerator

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH146947A (de) * 1930-07-25 1931-05-15 Farkas Pal Kälteanlage.
US2145775A (en) * 1934-07-30 1939-01-31 Muffly Glenn Refrigerating mechanism
US2291826A (en) * 1934-07-30 1942-08-04 Muffly Glenn Refrigerating mechanism
US2359780A (en) * 1938-10-29 1944-10-10 Muffly Glenn Refrigerating mechanism
US2428312A (en) * 1943-05-01 1947-09-30 Henry M Herbener Refrigerator
US2511851A (en) * 1950-06-20 Two temperature refrigerator
US2641109A (en) * 1947-08-29 1953-06-09 Muffly Glenn Multitemperature refrigerating system
US2703480A (en) * 1950-09-07 1955-03-08 Lawrence E Riemenschneider Plural temperature refrigerated cabinet
US2741100A (en) * 1954-01-07 1956-04-10 Gen Electric Refrigerating apparatus
FR1239733A (fr) * 1959-11-03 1960-08-26 Réfrigérateur perfectionné
GB894839A (en) * 1959-07-31 1962-04-26 Wirral Refrigeration Ltd Improvements in or relating to refrigerated cabinets for the storage of blood for pathological and surgical purposes

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511851A (en) * 1950-06-20 Two temperature refrigerator
CH146947A (de) * 1930-07-25 1931-05-15 Farkas Pal Kälteanlage.
US2145775A (en) * 1934-07-30 1939-01-31 Muffly Glenn Refrigerating mechanism
US2291826A (en) * 1934-07-30 1942-08-04 Muffly Glenn Refrigerating mechanism
US2359780A (en) * 1938-10-29 1944-10-10 Muffly Glenn Refrigerating mechanism
US2428312A (en) * 1943-05-01 1947-09-30 Henry M Herbener Refrigerator
US2641109A (en) * 1947-08-29 1953-06-09 Muffly Glenn Multitemperature refrigerating system
US2703480A (en) * 1950-09-07 1955-03-08 Lawrence E Riemenschneider Plural temperature refrigerated cabinet
US2741100A (en) * 1954-01-07 1956-04-10 Gen Electric Refrigerating apparatus
GB894839A (en) * 1959-07-31 1962-04-26 Wirral Refrigeration Ltd Improvements in or relating to refrigerated cabinets for the storage of blood for pathological and surgical purposes
FR1239733A (fr) * 1959-11-03 1960-08-26 Réfrigérateur perfectionné

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098052A2 (de) * 1982-06-26 1984-01-11 THORN EMI Domestic Appliances Limited Gefriereinrichtungen
EP0098052A3 (de) * 1982-06-26 1984-03-28 THORN EMI Domestic Appliances Limited Gefriereinrichtungen
EP0152155A2 (de) * 1984-02-15 1985-08-21 Koninklijke Philips Electronics N.V. Ausnehmbare Kältespeicherelemente für eine Gefriertruhe
EP0152155A3 (de) * 1984-02-15 1985-09-18 Koninklijke Philips Electronics N.V. Ausnehmbare Kältespeicherelemente für eine Gefriertruhe
EP0223743A1 (de) * 1985-10-23 1987-05-27 MERLONI ELETTRODOMESTICI S.p.A. Kältespeicherplatte für Gefriervorrichtungen
EP0794396A1 (de) * 1996-03-08 1997-09-10 Société d'Electromenager du Nord Selnor Gerät zur Erzeugung von Kälte mit Wärmetauscher mit Wärmespeicher
FR2745894A1 (fr) * 1996-03-08 1997-09-12 Selnor Echangeur de chaleur a accumulation pour appareil a generation de froid
ES2159455A1 (es) * 1997-08-25 2001-10-01 Aeg Hausgeraete Gmbh Aparato frigorifico con varias zonas de diferentes temperaturas.
WO2005093346A1 (en) * 2004-03-25 2005-10-06 Arcelik Anonim Sirketi A cooling device and a control method thereof
US7971443B2 (en) 2004-10-28 2011-07-05 Sharp Kabushiki Kaisha Refrigerator
US20110203768A1 (en) * 2004-10-28 2011-08-25 Masayasu Nishita Refrigerator
US8418485B2 (en) * 2004-10-28 2013-04-16 Sharp Kabushiki Kaisha Refrigerator

Also Published As

Publication number Publication date
IT8068827A0 (it) 1980-12-01
EP0053589A3 (de) 1983-05-18
IT1130539B (it) 1986-06-18

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Effective date: 19850520

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Inventor name: ALLUTO, LUIGI