EP0644385A1 - Système pour diminuer le givre dans un réfrigérateur - Google Patents

Système pour diminuer le givre dans un réfrigérateur Download PDF

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Publication number
EP0644385A1
EP0644385A1 EP94306536A EP94306536A EP0644385A1 EP 0644385 A1 EP0644385 A1 EP 0644385A1 EP 94306536 A EP94306536 A EP 94306536A EP 94306536 A EP94306536 A EP 94306536A EP 0644385 A1 EP0644385 A1 EP 0644385A1
Authority
EP
European Patent Office
Prior art keywords
refrigerator
air
base plate
partition member
evaporator
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Withdrawn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
EP94306536A
Other languages
German (de)
English (en)
Inventor
Jin Goo Park
Jun Chul Shin
Tae Su Kim
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.)
WiniaDaewoo Co Ltd
Original Assignee
Daewoo Electronics Co Ltd
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
Priority claimed from KR1019930017703A external-priority patent/KR0145659B1/ko
Priority claimed from KR1019930020810A external-priority patent/KR970004343B1/ko
Priority claimed from KR1019940008216A external-priority patent/KR950030194A/ko
Priority claimed from KR1019940008203A external-priority patent/KR100200114B1/ko
Application filed by Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Publication of EP0644385A1 publication Critical patent/EP0644385A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • 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
    • 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
    • F25D2317/067—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 air ducts
    • 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 system for reducing frost in a refrigerator, and more particularly to a system which can reduce moisture to be frosted on the outside of an evaporator in a refrigerator and thereby can improve the refrigeration efficiency or the coefficient of performance of the refrigerator.
  • a refrigerator is a household appliance for freezing or storing goods such as food at a cold temperature and/or in frozen by means of refrigerant circulating in a refrigeration cycle. That is, after compressed in a compressor, the refrigerant is condensed and liquified in a condenser, and evaporated in an evaporator, and expanded in an expander such as an expansion valve, and then flows to the compressor again.
  • the refrigerant absorbs heat from the surroundings in the course of evaporating in the evaporator so as to provide the refrigerator with a refrigerating force, and air circulates in a freezing room and/or a cold storage room after receiving the refrigerating force from the evaporator in the vicinity thereof, so that it freezes and/or cools the goods stored therein.
  • FIG. 1 is a schematic side sectional view of a conventional refrigerator 1 showing the flow of cold air, which deliver the refrigerating force into the freezing room and/or the cold storage room, in the refrigerator.
  • refrigerator 1 has a freezing room 2, an evaporator 4 disposed at the rear of freezing room 2, and a return duct 5 disposed between freezing room 2 and cold storage room 3.
  • the air cooled in the course of passing through evaporator 4 is supplied into freezing and cold storage rooms 2 and 3, and then the air is returned to evaporator 4 after being warmed in the course of circulating in freezing and cold storage rooms 2 and 3.
  • the warmed air after circulating in freezing room 2 and cold storage room 3 contains much moisture, and this moisture is rapidly frozen and frosted on evaporator 4 in the course of passing through evaporator 4.
  • the thermal conductivity of the evaporator decreases and thereby the refrigeration efficiency or the coefficient of performance of the refrigerator is largely reduced. Therefore, in order to prevent this reduction of the coefficient of performance, a heater 6 is disposed in the vicinity of the evaporator, and the frost frozen on the exterior of the evaporator is removed by stopping refrigerator and at the same time operating heater 6.
  • Popham's air defrost housing includes a preformed unitary body section having opposite ends, a generally centrally located center chamber, a pair of generally cylindrically shaped valve chambers and associated dampers having conforming cylindrical wall sections generally located in the center of each end, and a pair of air passages extending at one end into each valve chamber and at the other end of the exterior.
  • ambient air is drawn into the housing from one end and discharged from the other end after flowing past the frosted coil by an energy saving air defrost system.
  • Popham's housing has a very complicated construction. Further, because defrost is accomplished by means of ambient air in Popham's housing, its defrosting ability is changed according to the temperature of ambient air, which can make the refrigeration efficiency of the refrigerator lowered largely.
  • a refrigerator comprising a freezing compartment and a cold storage compartment, and a refrigerating circuit for refrigerating and circulating air to said compartments, said refrigerating circuit having an evaporator arranged to evaporate, and thereby refrigerate, the circulated air which is directed from the evaporator to said freezing compartment, characterised in that a return air duct is arranged to receive circulated air from each of said freezing and cold storage compartments and to direct the air back to said evaporator, in that a partition member extends within said return air duct such that the air received from said freezing and cold storage compartments generally flows along respective opposite surfaces of said partition member, and in that said partition member is arranged to reduce the moisture content of the air flowing therealong.
  • said partition member is comprised of a material having a high thermal conductivity.
  • said partition member comprises heating means.
  • said partition member is mounted in said return air duct to be inclined downwardly with respect to the horizontal whereby moisture will drain therefrom, and wherein said refrigerating circuit further comprises a drain channel arranged to receive moisture draining from said base plate.
  • Said partition member preferably comprises a substantially planar base plate.
  • said partition member may comprise a base plate which has been corrugated to increase the surface area thereof.
  • the corrugations of said base plate are substantially rectangular in cross-section.
  • the corrugations of said base plate are substantially arcuate in cross-section.
  • adjacent arcuate cross-section corrugations may be alternatively convex or concave, or all of the corrugations may have the same curvature.
  • said base plate is punctured to define a plurality of projections for guiding the flow of air along the base plate.
  • a plurality of pins are supported by said base plate and project relative the surfaces thereof.
  • the invention also extends to a system for reducing frost in a refrigerator, said system comprising: a refrigerator housing including a freezing room and a cold storage room; an evaporator operated as an element in a refrigeration cycle of the refrigerator to provide the freezing room and the cold storage room with a refrigerating force; a first means for defining a multiduct enclosing the evaporator and interconnected to the freezing room and the cold storage room, to flow an air receiving the refrigerating force in the course of passing through the evaporator into the freezing room and the cold storage room; a second means for defining a return duct interconnecting the multiduct and the freezing and cold storage rooms with each other in order for the air to return into the multiduct after having circulated in the freezing room and the cold storage room; and a third means comprised of a material having a high thermal conductivity and dividing the return duct into a first duct and a second duct, the first duct interconnecting the freezing room and the multiduct with each other, and the second
  • said third means is a frost-reducing partition member having a base plate, and two brackets disposed at the opposite sides of the base plate.
  • the base plate may be a rectangular flat plate.
  • the third means may further comprise a heater disposed on the base plate.
  • the system may further comprise a fourth means for defining a drain channel interconnected to the return duct to drain water out from the return duct.
  • the present invention also extends to a system for reducing frost in a refrigerator, the system comprising: a refrigerator housing including a freezing room and a cold storage room; an evaporator operated as an element in a refrigeration cycle of the refrigerator to provide the freezing room and the cold storage room with refrigerating force; a multiduct enclosing the evaporator and interconnected to the freezing room and the cold storage room in order for the air receiving the refrigerating force in the course of passing through the evaporator to flow into the freezing room and the cold storage room; and a return duct interconnecting the multiduct and the freezing and cold storage rooms with each other in order for air to return into the multiduct after having circulated in the freezing room and the cold storage room; and a frost-reducing partition member comprised of a material having a high thermal conductivity and having a base plate, and two brackets disposed at the opposite sides of the base plate, the frost-reducing partition member dividing the return duct into a first duct and a second duct, the first
  • the system for reducing frost in a refrigerator may include a drain channel interconnected to the return duct to drain water out from the return duct, and the frost-reducing partition member may include a heater disposed on the base plate, and the base plate is a rectangular flat plate and is declined toward the drain channel.
  • the base plate includes a plurality of upper and lower pins of high thermal conductivity respectively disposed at the upper and lower surfaces thereof, spaced out regular intervals apart.
  • Each upper pin and each lower pin are incorporated with each other to extend through the base plate one pair by one pair, the diameter of each of the upper and lower pins is reducing toward the free end thereof.
  • the base plate includes a plurality of rectangular upper sections, a plurality of rectangular lower sections, and a plurality of vertical sections each of which connects one of the upper sections and one of the lower sections with each other.
  • a plurality of upper protrusions each of which extends toward the respective lower section corresponding thereto are formed at the inner upper surface of the return duct, and a plurality of lower protrusions each of which extends toward the respective upper section corresponding thereto and two support columns for preventing the sagging of the base plate are formed at the inner lower surface of the return duct.
  • the base plate includes a plurality of longitudinally extending arcuate plates, the opposite sides of the respective arcuate plates are connected incorporated respectively with one side of the arcuate plate adjacent thereto, and concave portions of the arcuate plates facing toward the second duct in the return duct.
  • FIG. 1 is a schematic side sectional view of a refrigerator having a system for reducing frost therein according to a first embodiment of the present invention.
  • the refrigerator includes a freezing room 100, a cold storage room 110, and a partition wall 102 disposed therebetween partitioning them.
  • Return duct 200 is defined in partition wall 102, and a frost-reducing partition member 400 is disposed in return duct 200.
  • An evaporator 104 is disposed in a multiduct 112 at the rear of freezing room 100.
  • FIG. 3 is an enlarged view of return duct 200 in which frost-reducing partition plate 400 is disposed.
  • frost-reducing partition plate 400 divides return duct to a first duct 201 and a second duct 202.
  • First duct 201 interconnects freezing room 100 and multiduct 112 with each other, and the second duct 202 interconnects cold storage room 110 and multiduct 112 with each other.
  • a drain channel 120 which is interconnected to return duct 200 and multiduct 112, is defined under multiduct 112.
  • Frost-reducing partition plate 400 includes a base plate 401, and two brackets 402 disposed at the opposite sides of base plate 401, as shown in FIG. 4.
  • a heater 403 is disposed on base plate 401.
  • Base plate 401 is made of a material of a high thermal conductivity (a metal such as zinc or aluminum), and is declined toward drain channel 120.
  • FIGs. 5 and 6 are sectional views of a frost-reducing partition member 500 and a return duct 540 enclosing frost-reducing partition member 500, according to the second embodiment of the present invention.
  • Frost-reducing partition plate 500 includes a plurality of rectangular upper sections 510, a plurality of rectangular lower sections 520, and a plurality of vertical sections 530 respectively interconnecting respective upper sections and respective lower sections 520 with each other.
  • Two brackets 502 are provided at the opposite sides of base plate 501.
  • a linear heater 505 is disposed on respective lower sections 520.
  • Frost-reducing partition member 500 is not flat but uneven, and thereby the total area, that is the heat-conduction area between the airs flowing through first and second ducts 541 and 542, is larger than that in the preceding embodiment. Therefore, the effect of reducing frost can be augmented compared with that in case of adopting the flat base plate.

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  • 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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Removal Of Water From Condensation And Defrosting (AREA)
EP94306536A 1993-09-04 1994-09-05 Système pour diminuer le givre dans un réfrigérateur Withdrawn EP0644385A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
KR1019930017703A KR0145659B1 (ko) 1993-09-04 1993-09-04 냉장고의 제상장치
KR9317703 1993-09-04
KR1019930020810A KR970004343B1 (ko) 1993-10-08 1993-10-08 냉장고의 제상장치
KR9320810 1993-10-08
KR9408216 1994-04-19
KR9408203 1994-04-19
KR1019940008216A KR950030194A (ko) 1994-04-19 1994-04-19 넥크 재생 장치 및 그 방법
KR1019940008203A KR100200114B1 (ko) 1994-04-19 1994-04-19 킥 다운 동작을 위한 유압 제어장치 및 그 방법

Publications (1)

Publication Number Publication Date
EP0644385A1 true EP0644385A1 (fr) 1995-03-22

Family

ID=27483011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94306536A Withdrawn EP0644385A1 (fr) 1993-09-04 1994-09-05 Système pour diminuer le givre dans un réfrigérateur

Country Status (4)

Country Link
EP (1) EP0644385A1 (fr)
CN (1) CN1111343A (fr)
AU (1) AU685140B2 (fr)
BR (1) BR9403434A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007023474A2 (fr) * 2005-08-26 2007-03-01 Arcelik Anonim Sirketi Dispositif de refroidissement
WO2009141125A1 (fr) 2008-05-23 2009-11-26 Aktiebolaget Electrolux (Publ) Appareil de froid
EP2846116A1 (fr) 2013-09-09 2015-03-11 Whirlpool Corporation Réfrigérateur
CN110487011A (zh) * 2019-08-27 2019-11-22 海信（山东）冰箱有限公司 一种风冷冰箱
CN113124599A (zh) * 2019-12-31 2021-07-16 青岛海尔特种电冰柜有限公司 一种冷柜及其控制方法
WO2022037714A1 (fr) * 2020-08-18 2022-02-24 青岛海尔特种电冰箱有限公司 Réfrigérateur permettant une réduction de perte de chaleur d'un conduit de retour d'air

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104089868A (zh) * 2014-05-30 2014-10-08 张家港宏利橡塑制品有限公司 橡胶热空气老化试验箱
CN106642984B (zh) * 2017-01-13 2023-07-21 广东维诺电器有限公司 一种多温区的酒柜或冷柜
CN116222126B (zh) * 2021-12-02 2024-08-06 青岛海尔电冰箱有限公司 制冷设备的化霜控制方法及制冷设备
CN118376037B (zh) * 2024-06-24 2024-09-03 济南大森制冷工程有限公司 基于结霜厚度模型预测的除霜控制系统

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050956A (en) * 1960-07-08 1962-08-28 Gen Motors Corp Refrigerating apparatus with frost free compartment
US3079994A (en) * 1956-01-30 1963-03-05 Daimler Benz Ag Heat transfer plate construction
GB1410933A (en) * 1972-10-23 1975-10-22 Constructora Apparatos Refrige Refrigerators
US4075866A (en) * 1977-01-07 1978-02-28 General Motors Corporation Refrigerator defroster-humidifier
US4077229A (en) * 1977-01-03 1978-03-07 General Electric Company Household refrigerator with air circulation and cooling arrangement
GB1510139A (en) * 1975-01-16 1978-05-10 Borg Warner Stacked plate heat exchangers
GB2028480A (en) * 1979-09-28 1980-03-05 Guinness Son & Co Ltd Refrigerators
US4211090A (en) * 1978-12-06 1980-07-08 General Electric Company Household refrigerator with air circulation and cooling arrangement
DE8411960U1 (de) * 1984-04-16 1988-07-14 Siemens AG, 1000 Berlin und 8000 München Wärmetauscherprofil
EP0541172A2 (fr) * 1991-11-08 1993-05-12 CANDY S.p.A. Réfrigérateur à plusieurs compartiments sans formation de givre

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079994A (en) * 1956-01-30 1963-03-05 Daimler Benz Ag Heat transfer plate construction
US3050956A (en) * 1960-07-08 1962-08-28 Gen Motors Corp Refrigerating apparatus with frost free compartment
GB1410933A (en) * 1972-10-23 1975-10-22 Constructora Apparatos Refrige Refrigerators
GB1510139A (en) * 1975-01-16 1978-05-10 Borg Warner Stacked plate heat exchangers
US4077229A (en) * 1977-01-03 1978-03-07 General Electric Company Household refrigerator with air circulation and cooling arrangement
US4075866A (en) * 1977-01-07 1978-02-28 General Motors Corporation Refrigerator defroster-humidifier
US4211090A (en) * 1978-12-06 1980-07-08 General Electric Company Household refrigerator with air circulation and cooling arrangement
GB2028480A (en) * 1979-09-28 1980-03-05 Guinness Son & Co Ltd Refrigerators
DE8411960U1 (de) * 1984-04-16 1988-07-14 Siemens AG, 1000 Berlin und 8000 München Wärmetauscherprofil
EP0541172A2 (fr) * 1991-11-08 1993-05-12 CANDY S.p.A. Réfrigérateur à plusieurs compartiments sans formation de givre

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007023474A2 (fr) * 2005-08-26 2007-03-01 Arcelik Anonim Sirketi Dispositif de refroidissement
WO2007023474A3 (fr) * 2005-08-26 2007-06-07 Arcelik As Dispositif de refroidissement
WO2009141125A1 (fr) 2008-05-23 2009-11-26 Aktiebolaget Electrolux (Publ) Appareil de froid
EP2846116A1 (fr) 2013-09-09 2015-03-11 Whirlpool Corporation Réfrigérateur
CN110487011A (zh) * 2019-08-27 2019-11-22 海信（山东）冰箱有限公司 一种风冷冰箱
CN113124599A (zh) * 2019-12-31 2021-07-16 青岛海尔特种电冰柜有限公司 一种冷柜及其控制方法
CN113124599B (zh) * 2019-12-31 2023-05-12 青岛海尔特种电冰柜有限公司 一种冷柜及其控制方法
WO2022037714A1 (fr) * 2020-08-18 2022-02-24 青岛海尔特种电冰箱有限公司 Réfrigérateur permettant une réduction de perte de chaleur d'un conduit de retour d'air

Also Published As

Publication number Publication date
CN1111343A (zh) 1995-11-08
AU7168494A (en) 1995-03-16
AU685140B2 (en) 1998-01-15
BR9403434A (pt) 1995-05-09

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