EP0218560B1 - Refrigerator having refrigerating compartment with zones at different temperatures - Google Patents

Refrigerator having refrigerating compartment with zones at different temperatures Download PDF

Info

Publication number
EP0218560B1
EP0218560B1 EP86830280A EP86830280A EP0218560B1 EP 0218560 B1 EP0218560 B1 EP 0218560B1 EP 86830280 A EP86830280 A EP 86830280A EP 86830280 A EP86830280 A EP 86830280A EP 0218560 B1 EP0218560 B1 EP 0218560B1
Authority
EP
European Patent Office
Prior art keywords
zone
refrigerating compartment
cooling
elements
zones
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
EP86830280A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0218560A3 (en
EP0218560A2 (en
Inventor
Aurelio Boninsegni
Alberto Mariani
Piero Mariani
Natale Monaldi
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.)
Whirlpool EMEA SpA
Original Assignee
Merloni Elettrodomestici 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 Merloni Elettrodomestici SpA filed Critical Merloni Elettrodomestici SpA
Publication of EP0218560A2 publication Critical patent/EP0218560A2/en
Publication of EP0218560A3 publication Critical patent/EP0218560A3/en
Application granted granted Critical
Publication of EP0218560B1 publication Critical patent/EP0218560B1/en
Expired 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
    • 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
    • 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
    • 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
    • F25D2317/061—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 through special compartments
    • 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

  • the present invention relates to a refrigerator having a refrigerating compartment with zones at different temperatures. More particularly the present invention relates to a refrigerator having a cooling circuit that allows two or more zones at different temperatures to be obtained within the refrigerating compartment of a refrigerator, employing a static evaporator as a cooling system.
  • refrigerators which are commercially available employing a static evaporator for cooling the refrigerating compartment have within said compartment a substantially uniform temperature distribution, except for a slight stratification of colder temperatures at the bottom.
  • the maximum temperature difference occurring between the various zones is of about 2-3°C.
  • ventilated evaporators are employed in freezing compartments as the dehydrating action of such evaporators on foodstuffs which are usually stored within the refrigerating compartment causes said foodstuffs to be badly conserved.
  • the ideal temperature for a good conservation of eggs, butter, milk etc. is of about 5°, whereas in the case of vegetables and fruit the ideal temperature is of about 7° and for meat and fish it is of about 0°C.
  • a refrigerating compartment with a cooling circuit which circuit comprises a static evaporator, made up of a number of cooling elements that are fed in series by a compressor, conveyor wall means in said refrigerating compartment creating a way for the flow of the descending cold air, and port means arranged at a lower position with respect to the conveyor wall and creating a way for the flow of the cold descending air through the zone of the refrigerating compartment which is adjacent to the zone wherein the compressor is housed.
  • the aim of said circuit is that of obtaining a uniform temperature distribution.
  • the present invention proposes a refrigerator comprising a refrigerating compartment and a cooling circuit, said cooling circuit comprising a static evaporator which is made up of at least two cooling elements arranged at different heights in the refrigerating compartment, conveyor wall means, creating a way for the flow of the descending cold air, and port means, arranged at a lower position with respect to the conveyor wall means and creating a way for the flow of the cold descending air through a zone of the refrigerating compartment adjacent to a zone wherein the compressor is housed, characterized in that said cooling elements are fed in series by the compressor in the rising direction, and in that said conveyor wall means has a vertical portion spaced from and opposite to the lower cooling element and a horizontal portion forming the bottom of a cold zone of the refrigerating compartment and defining a channel between this bottom and the compressed housing zone of the refrigerating compartment, in which channel said port means are disposed.
  • a static evaporator which is made up of at least two cooling elements arranged at different heights in the
  • two cooling elements are provided, the first of said elements having a cooling power lower than that of the second of said elements, this last element being arranged within an upper zone of the refrigerating compartment.
  • the size of said two cooling elements and the structure of said conveyor wall means and said port means allows to obtain inside said refrigerating compartment three zones at different temperatures, the highest temperature being obtained in a bottom zone, the lowest temperature being obtained in a middle zone and the middle temperature being obtained in an upper zone.
  • said three zones will be respectively at temperatures of about +7°C, about 0°C and about +5°C.
  • numbers 1 and 2 point out respectively the refrigerating compartment and the freezing compartment.
  • Th cooling circuit of the refrigerating compartment 1 only will be disclosed, because the realization of the cooling circuit of the compartment 2 is independent of the object of the present invention.
  • the static evaporator is made up of a number of series-connected elements. Just two elements are shown in the figure, which are pointed out by the reference numbers 3 and 4, but it is clearly evident that a number of said elements can be provided which can be varied according to the specific needings.
  • the compressor of the cooling circuit is housed as usually within the housing 5 arranged in the back lower zone of the refrigerating compartment.
  • the element 4 of the evaporator shown in Figure 1 is of such a size as to obtain a temperature of about +5°C within in the zone 6 of the compartment 1; see also Figure 3.
  • the element 3 of said evaporator is in turn of such a size as to obtain an average temperature of about 0°C within the zone 7 of said compartment 1.
  • a conveyor wall 8 is arranged parallel to the bottom wall 9 of the compartment 1, which wall forms a forced way for the flow of cold air descending from the zone 6 as shown by the arrows 10, 11 and, after said air has heated subtracting heat from the environment of said zone 7 according to arrow 12 (see Figure 2).
  • Arrows 13 and 14 point out respectively the direction of cold air created by said element 4 within the zone 6 and of the hotter air coming from the bottom space.
  • the upper zone being at about +5°C whereas the lower zone is at about 0°C, i.e. at the optimal temperatures for storing foodstuffs such as milk, butter, cheese and the like, and meat.

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)
EP86830280A 1985-10-11 1986-10-01 Refrigerator having refrigerating compartment with zones at different temperatures Expired EP0218560B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4865785 1985-10-11
IT48657/85A IT1182908B (it) 1985-10-11 1985-10-11 Circuito di raffredamento ad evaporatore statico per scomparto frigorifero a temperature differenziate

Publications (3)

Publication Number Publication Date
EP0218560A2 EP0218560A2 (en) 1987-04-15
EP0218560A3 EP0218560A3 (en) 1988-05-11
EP0218560B1 true EP0218560B1 (en) 1991-01-23

Family

ID=11267875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86830280A Expired EP0218560B1 (en) 1985-10-11 1986-10-01 Refrigerator having refrigerating compartment with zones at different temperatures

Country Status (4)

Country Link
EP (1) EP0218560B1 (it)
DE (2) DE218560T1 (it)
ES (1) ES2002831A6 (it)
IT (1) IT1182908B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19736916A1 (de) * 1997-08-25 1999-03-04 Aeg Hausgeraete Gmbh Kältegerät mit mehreren Bereichen unterschiedlicher Temperatur
DE10236210A1 (de) 2002-08-07 2004-03-04 BSH Bosch und Siemens Hausgeräte GmbH Kältergerät mit unterteiltem Innenraum
DE102011090175A1 (de) * 2011-12-30 2013-07-04 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit einem Kaltlagerfach
US11402145B1 (en) 2020-03-24 2022-08-02 Sub-Zero Group, Inc. Split air flow system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707871A (en) * 1952-10-31 1955-05-10 Philco Corp Refrigeration apparatus
CH584874A5 (it) * 1974-11-22 1977-02-15 Koch Ag
DE2928774C2 (de) * 1979-07-17 1984-03-22 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Gefrierschrank mit einem durch natürliche Konvektion gekühlten, großräumigen Gefrierraum
GB2079424B (en) * 1980-07-02 1984-11-07 Thorn Domestic Appliances Ltd Improvements in or relating to cold cabinets

Also Published As

Publication number Publication date
IT1182908B (it) 1987-10-05
EP0218560A3 (en) 1988-05-11
DE3677124D1 (de) 1991-02-28
IT8548657A0 (it) 1985-10-11
EP0218560A2 (en) 1987-04-15
DE218560T1 (de) 1987-09-03
ES2002831A6 (es) 1988-10-01

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