EP2420773B1 - Kühlschrank - Google Patents

Kühlschrank Download PDF

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Publication number
EP2420773B1
EP2420773B1 EP11175782.9A EP11175782A EP2420773B1 EP 2420773 B1 EP2420773 B1 EP 2420773B1 EP 11175782 A EP11175782 A EP 11175782A EP 2420773 B1 EP2420773 B1 EP 2420773B1
Authority
EP
European Patent Office
Prior art keywords
heat transfer
transfer unit
refrigerator
unit
heat
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.)
Active
Application number
EP11175782.9A
Other languages
English (en)
French (fr)
Other versions
EP2420773A3 (de
EP2420773A2 (de
Inventor
Sunam Chae
Juyeong Heo
Sung Jhee
Chanho Jeon
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 KR1020100074272A external-priority patent/KR20120012236A/ko
Priority claimed from KR1020100074275A external-priority patent/KR20120012238A/ko
Priority claimed from KR1020100074273A external-priority patent/KR20120012237A/ko
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP2420773A2 publication Critical patent/EP2420773A2/de
Publication of EP2420773A3 publication Critical patent/EP2420773A3/de
Application granted granted Critical
Publication of EP2420773B1 publication Critical patent/EP2420773B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • 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
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/02—Details of doors or covers not otherwise covered
    • F25D2323/023—Door in door constructions

Definitions

  • This specification relates to a refrigerator, and particularly, to a refrigerator capable of preventing dew from being formed at a periphery of a home bar using heat generated from a machine room.
  • a refrigerator is an electronic product for keeping stored foods in a fresh state for a long term of time by supplying cold air, which is generated from an evaporator of a refrigeration cycle, into a storage chamber.
  • the refrigerator may be fabricated in variation types, such as an upright type having a freezing chamber and a refrigerating chamber partitioned up and down, a side-by-side type having the freezing chamber and the refrigerating chamber partitioned side by side and having a relatively large capacity, or the like.
  • refrigerators having a home bar or the like have come onto the market in order to meet various consumers' requirements.
  • a storage space is formed within a refrigerator main body.
  • the storage space is partitioned into a freezing chamber and a refrigerating chamber in the center within the refrigerator main body.
  • Doors for opening or closing the freezing chamber and the refrigerating chamber are installed at a front surface of the refrigerator main body.
  • the doors are rotatably supported by hinge assemblies at both upper and lower side of the front surface of the refrigerator main body.
  • the door for opening or closing the refrigerating chamber is provided with a home bar for allowing stored foods or items to be taken without opening the door.
  • the home bar includes a home bar frame formed in a rectangular shape in an opening formed by cutting off the door, and a home bar door coupled to at least one side surface of the home bar frame for opening or closing the opening.
  • the home bar door is fabricated in form of being accommodated in the opening, and an insulating layer is formed within the home bar door.
  • a heater was mounted at the perimeter of the home bar frame.
  • power for driving the heater is constantly supplied, thereby increasing power consumption.
  • a refrigerator according to the preamble of claim 1 is disclosed in KR 2010 022278 .
  • an aspect of the detailed description is to provide a refrigerator having a heat transfer unit capable of preventing dew from being formed at a perimeter of a home bar, which is installed at the refrigerator to open or close a part of a refrigerating area.
  • Another aspect of the detailed description is to provide a refrigerator having a heat transfer unit capable of remarkably reducing power consumption by preventing dew formation at a perimeter of a home bar by using waste heat generated by refrigerating elements located within a machine room provided in the refrigerator.
  • a refrigerator is defined in claim 1.
  • the refrigerator may further include an insulating unit configured to cover an outer circumference of the heat transfer unit.
  • FIG. 1 is a perspective view of a refrigerator in accordance with one exemplary embodiment
  • FIG. 2 is a perspective view showing an example that a heat transfer unit is installed at the home bar of FIG. 1
  • FIG. 3 is a front view of the refrigerator
  • FIG. 4 is a side view showing an example that a condensation heat guiding passage is installed at a lower portion of a refrigerator main body of the refrigerator
  • FIG. 5 is a side view showing an example that an auxiliary fan is installed at front of the condensation heat guiding passage shown in FIG. 4
  • FIG. 6 is a side view showing an example that a condenser is installed at a lower end of the refrigerator main body of the refrigerator.
  • a refrigerator in accordance with this specification includes a refrigerator main body (hereinafter, also referred to as 'main body') 110 having a storage space for keeping foods, and a door 120 rotatably coupled to the main body 110 for opening or closing an open surface of the storage space.
  • 'main body' a refrigerator main body
  • 'main body' a refrigerator main body 110 having a storage space for keeping foods
  • door 120 rotatably coupled to the main body 110 for opening or closing an open surface of the storage space.
  • the refrigerator main body 110 may be partitioned into a refrigerating area and a freezing area.
  • the door 120 may be provided with a home bar 200 for selectively exposing a part of the refrigerating area or the freezing area to the exterior.
  • a heat transfer unit 300 is installed at a periphery (perimeter) of the home bar 200.
  • the heat transfer unit 300 transfers heat generated from a condenser to the periphery of the home bar 200 so as to remove dewdrops formed at the periphery of the home bar 200.
  • the home bar 200 may include a home bar door 210 for opening or closing a part of the door 120, and a home bar frame 220 defining an opening open or closed by the home bar door 210.
  • the periphery of the home bar 200 may be defined as a region formed along the home bar frame 220.
  • the heat transfer unit 300 is implemented as a heat pipe. Both ends of the heat transfer unit 300 are present near the heat source, and a middle portion thereof surrounds the periphery of the home bar 200.
  • the heat transfer unit 300 may include a pipe body 310 having a core 320 disposed on an inner circumferential surface thereof, and a working fluid 330 filled within the pipe body 310 in a vacuum state and evaporated by heat transferred from the exterior.
  • both ends of the heat transfer unit 300 as the heat pipe are installed at a lower end of the refrigerator main body 10, namely, at a lower end of the door 120 installed at the refrigerator main body 110. Accordingly, the heat transfer unit 300 may be present near the machine room so as to easily utilize condensation heat.
  • the periphery of the home bar 200 contacting the heat transfer unit 300 may be made of plastic, and an inner portion of the refrigerator main body 110 or the door 120 contacting the heat transfer unit 300 may be formed of a metal.
  • the inner portion of the refrigerator main body 110 contacting the heat transfer unit 300 may be preferably the inner portion of the door 120.
  • the volatile working fluid 330 filled in the heat transfer unit 300 in the vacuum state may be evaporated, and the evaporated working fluid 330 may then be moved up along the pipe body 310.
  • the working fluid 330 present within the periphery of the home bar 200 may be condensed by cold air supplied from the inside of the refrigerator main body 110 and moved down by its own gravity, thereby transferring heat.
  • machine room heat is generated.
  • Such heat is discharged outside the refrigerator main body 110 by an element such as a fan (not shown).
  • a heat source is formed within the lower portion of the refrigerator main body 110 by the heat generated from the elements such as the condenser 400.
  • the machine room heat may be utilized as a heat source.
  • the refrigerator main body 110 may further include a condensation heat guiding passage 410, which guides heat generated from the condenser 400 toward the end portion of the heat transfer unit 300.
  • the condensation heat guiding passage 410 may be used to utilize the condensation heat of the condenser 400 as a heat source.
  • an auxiliary fan 500 may further be installed at the lower end of the refrigerator main body 110.
  • the auxiliary fan 500 may guide heat generated from the condenser 400 to an end portion of the pipe body 310.
  • the auxiliary fan 500 may be used to forcibly convect the heat generated from the condenser 400 to the end portion of the pipe body 310, whereby the condensation heat generated from the condenser 400 can be efficiently used.
  • the condenser 400 is installed at the lower end of the refrigerator main body 110.
  • both ends of the heat transfer unit 300 are approximately on a level with the heat source, accordingly, when the auxiliary fan 500 is applied, the condensation heat can be utilized more effectively.
  • the refrigerator may further include an insulating unit 600 (see FIGS. 7 and 8 ) for insulating the heat transfer unit 300.
  • the insulating unit 600 may be made of polyurethane, and employed to cover (surround) a portion excluding a portion where the periphery of the home bar 200 contacts an outer surface of the refrigerator main body 110.
  • FIG. 7 shows a state that the heat transfer unit 300 is covered (surrounded) by the insulating unit 600 at the side of the home bar 200.
  • the periphery of the home bar 200 may be made of plastic as ABS resin, and the heat transfer unit 300 may be attached onto the peripheral surface of the home bar 200.
  • the insulating unit 600 may be foamed using polyurethane.
  • the insulating unit 600 may be foamed to cover the peripheral surface of the home bar 200 and an outer circumference of the heat transfer unit 300. Accordingly, heat of the heat transfer unit 300 can be insulated by the insulating unit 600, thereby enhancing heat transfer efficiency.
  • FIG. 8 shows a state that the heat transfer unit 300 is covered (surrounded) by the insulating unit 600 at the side of the inner portion of the door 120 as the inner portion of the refrigerator main body 110.
  • the inner portion of the door 120 may be formed of a metal.
  • the heat transfer unit 300 for transferring heat generated from the lower portion of the refrigerator main body 110 up to the periphery of the home bar 200 may be adhered closely onto the inner portion of the door 120.
  • the insulating unit 600 may be foamed to cover (surround) the heat transfer unit 300 within the inner portion of the door 120.
  • the heat transfer unit 300 is insulated by the insulating unit 600, it may be possible to enhance heat transfer efficiency during a process of transferring heat from the heat source to the periphery of the home bar 200. On the other hand, a heat transfer loss within the inner portion of the door 120 can be efficiently reduced.
  • the refrigerator includes an auxiliary heater in regard of a case that heat from the heat source is not enough.
  • the refrigerator further includes a heating unit 700 installed to be thermally conductive with the heat transfer unit 300 located near the heat source, and a non-conductive cover 800 for covering the heat transfer unit 300 and the heating unit 700 near the heat source.
  • the heating unit 700 may be a heater, which is heated up to a preset temperature by external power.
  • the heating unit 700 may be fabricated in a shape having a preset length. That is, since the heat transfer unit 300 is formed in the shape of pipe with the preset length, the heating unit 700 may preferably be formed to be easily attached onto an outer surface of the heat transfer unit 300.
  • the non-conductive cover 800 may be formed in a shape like a tape having a preset width.
  • the non-conductive cover 800 may be attached onto the inner surface of the refrigerator main body 110, namely, the inner surface of the door 120 to cover the heat transfer unit 300 and the heating unit 700.
  • the heating unit 700 may be connected to the outer surface of the heat transfer unit 300 located near the heat source, and the non-conductive cover 800 may be attached onto the inner surface of the door 120 to cover the heat transfer unit 300 and the heating unit 700.
  • the heating unit 700 which is a heater, is attached onto the outer surface of the heat transfer unit 300, which is installed near the heat source, namely, at the inner surface of the door 120, in a physically contacted state.
  • the heating unit 700 may be attached onto the inner surface of the door 120, by using the non-conductive cover 800.
  • the non-conductive cover 800 may reduce externally discharged heat of the heating unit 700 or the heat transfer unit 300.
  • the heating unit 700 may be fixed onto a side surface of the heat transfer unit 300 or be provided in plurality to be contactable with the upper surface and both side surfaces of the heat transfer unit 300.
  • the heating unit 700 may be fabricated to have a recess, and accordingly, the heat transfer unit 300 may be inserted into the recess to be surrounded by the heating unit 700.
  • FIG. 10 shows that the heating unit 700 is attached onto the outer surface of the heat transfer unit 300 by a conductive adhesive 900, according to the invention.
  • a preset amount of conductive adhesive 900 may be coated on the outer surface of the heat transfer unit 300, and the heating unit 700 may be located on the conductive adhesive 900 so as to be fixed onto the outer surface of the heat transfer unit 300.
  • the attachment of the non-conductive cover 800 may help the heat transfer unit 300 and the heating unit 700 to be firmer fixed to each other.
  • heat generated from the heating unit 700 may be easily transferred to the heat transfer unit 300 via the conductive adhesive 900.
  • the heating unit 700 used as the auxiliary heater is electrically conductive with the heat transfer unit 300 by virtue of the conductive adhesive 900 so as to facilitate heat transfer from the heating unit 700 to the heat transfer unit 300.
  • the heat transfer unit 300 and the heating unit 700 is covered with the non-conductive cover 800 so as to avoid or prevent heat generated from the heat transfer unit 300 and the heating unit 700 from being transferred to the exterior.
  • auxiliary heat supplied from the heating unit 700 to the heat transfer unit 300 and heat of the heat transfer unit 300 can be effectively transferred without a loss to the exterior by virtue of the non-conductive cover 800.
  • the refrigerator may further include a heating temperature control module for control of heating temperature.
  • the heating temperature control module may include a temperature sensor 720 for measuring the temperature of the heat transfer unit 300 located near the heat source, and a controller 730 electrically connected to the temperature sensor 720 for controlling the operation of the heating unit 700 such that the measured temperature reaches a preset reference heating temperature.
  • heat of a certain temperature at the lower end of the door 120 may be transferred to one end of the heat transfer unit 300, and the heat transfer unit 300 may transfer heat from the heat source to the periphery of the home bar 200 using the working fluid 330.
  • the temperature sensor 720 may measure the temperature at the heat source, preferably, measure the temperature at the one end of the heat transfer unit 300 so as to transmit the measured temperature to the controller 730 in form of an electric signal.
  • the controller 730 may then determine whether the transmitted measured temperature reaches the preset reference heating temperature, and control the operation of the heating unit 700 such that the measured temperature reaches the preset reference heating temperature.
  • the heating unit 700 may be connected to a power source 710, which may be driven by a signal from the controller 730.
  • the temperature within the home bar 200 can be lower than dew point temperature without a separate power supply when using a heat pipe, namely, the heat transfer unit 300 and the heating unit 700, thereby remarkably reducing power consumed to prevent dew formation at the periphery of the home bar 200.

Claims (6)

  1. Kühlschrank, der aufweist:
    einen Kühlschrankhauptkörper (110) mit einem Lagerraum zum Aufbewahren von Lebensmitteln;
    eine Tür (120), die aufgebaut ist, um den Lagerraum des Kühlschrankhauptkörpers zu öffnen oder zu schließen;
    eine Hausbar (200), die in der Tür bereitgestellt ist;
    eine Wärmeübertragungseinheit (300), die derart installiert ist, dass sie einen Umfang der Hausbar (200) umgibt, wobei die Wärmeübertragungseinheit (300) ein Wärmeleitungsrohr ist, das in der Tür (120) angeordnet ist;
    dadurch gekennzeichnet, dass die Wärmeübertragungseinheit (300) aufgebaut ist, um Wärme, die von einem Kondensator (400) erzeugt wird, der an dem Kühlschrankhauptkörper (110) installiert ist, zu dem Umfang der Hausbar (200) zu übertragen, wobei die Wärmeübertragungseinheit (300) beide Enden an einem unteren Ende der Tür (120) installiert hat;
    und dass der Kühlschrank ferner aufweist:
    eine Heizeinheit (700), die aufgebaut ist, um durch Leistung von außen bis zu einer vorgegebenen Temperatur aufgeheizt zu werden, und die derart installiert ist, dass sie mit der Wärmeübertragungseinheit (300) wärmeleitend ist;
    leitender Klebstoff (900), der jeweils zwischen der Wärmeübertragungseinheit (300) und der Heizeinheit (700) eingefügt ist;
    eine Abdeckung (800), die aus einem nichtleitenden Material hergestellt ist und auf der inneren Oberfläche der Tür (120) befestigt ist, um die Wärmeübertragungseinheit (300) und die Heizeinheit (700) zu bedecken; und
    ein Hilfsgebläse (500), das an einem unteren Ende des Kühlschrankhauptkörpers (110) installiert ist, wobei das Hilfsgebläse (500) derart aufgebaut ist, dass es von dem Kondensator (400) erzeugte Wärme in Richtung beider Enden der Wärmeübertragungseinheit (300) führt,
    wobei die Wärmeübertragungseinheit (300) einen Mittelabschnitt hat, der die Umgebung der Hausbar (200) umgibt,
    wobei der Kondensator (400) an dem unteren Ende des Kühlschrankhauptkörpers (110) installiert ist und auf einer Ebene mit beiden Enden der Wärmeübertragungseinheit (300) angeordnet ist,
    wobei das Hilfsgebläse (500) zwischen dem Kondensator (400) und beiden Enden der Wärmeübertragungseinheit (300) angeordnet ist,
    wobei ein Arbeitsfluid (330) in einem Vakuumzustand in die Wärmeübertragungseinheit (300) gefüllt wird und durch Wärme, die von dem Kondensator (400) übertragen wird, verdampft wird, und
    wobei die Heizeinheit (700) durch den leitenden Klebstoff (900) auf der Außenoberfläche der Wärmeübertragungseinheit (300) befestigt ist.
  2. Kühlschrank nach Anspruch 1, der ferner eine Isoliereinheit (600) aufweist, die aufgebaut ist, um einen Teil eines Außenumfangs der Wärmeübertragungseinheit (300) zu bedecken.
  3. Kühlschrank nach Anspruch 2, wobei die Isoliereinheit (600) aus Polyurethan ausgebildet ist und aufgebaut ist, um einen Abschnitt, ohne einen Abschnitt, wo der Umfang der Hausbar (200) eine Außenoberfläche des Kühlschrankhauptkörpers (110) berührt, zu bedecken.
  4. Kühlschrank nach einem der vorhergehenden Ansprüche, wobei die Heizeinheit (700) an wenigstens einer Seitenoberfläche der Wärmeübertragungseinheit (300) installiert ist, um wärmeleitend zu sein.
  5. Kühlschrank nach einem der vorhergehenden Ansprüche, der ferner ein Heiztemperatursteuermodul aufweist, das aufgebaut ist, um die Heiztemperatur der Heizeinheit (700) zu steuern.
  6. Kühlschrank nach Anspruch 5, wobei das Heiztemperatursteuermodul aufweist:
    einen Temperatursensor (720), der aufgebaut ist, um die Temperatur der Wärmeübertragungseinheit (300), die an der Wärmequelle angeordnet ist, zu messen; und
    eine Steuerung (730), die mit dem Temperatursensor (720) elektrisch verbunden ist und aufgebaut ist, um den Betrieb der Heizeinheit (700) derart zu steuern, dass die gemessene Temperatur eine vorgegebene Bezugsheiztemperatur erreicht.
EP11175782.9A 2010-07-30 2011-07-28 Kühlschrank Active EP2420773B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020100074272A KR20120012236A (ko) 2010-07-30 2010-07-30 보조 가열이 가능한 열 전달부를 갖는 냉장고
KR1020100074275A KR20120012238A (ko) 2010-07-30 2010-07-30 열 전달부를 갖는 냉장고
KR1020100074273A KR20120012237A (ko) 2010-07-30 2010-07-30 단열 상태의 열 전달부를 갖는 냉장고

Publications (3)

Publication Number Publication Date
EP2420773A2 EP2420773A2 (de) 2012-02-22
EP2420773A3 EP2420773A3 (de) 2014-10-08
EP2420773B1 true EP2420773B1 (de) 2019-03-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11175782.9A Active EP2420773B1 (de) 2010-07-30 2011-07-28 Kühlschrank

Country Status (2)

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US (1) US20120023986A1 (de)
EP (1) EP2420773B1 (de)

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CN102997537A (zh) * 2012-12-12 2013-03-27 合肥美的荣事达电冰箱有限公司 冰箱
KR101620429B1 (ko) * 2014-04-18 2016-05-23 엘지전자 주식회사 냉장고
KR20160001389A (ko) * 2014-06-27 2016-01-06 삼성전자주식회사 냉장고 및 그 제어 방법
CN104713302A (zh) * 2015-03-19 2015-06-17 青岛海尔股份有限公司 内门体及具有该内门体的冷藏冷冻装置
US10282324B2 (en) * 2015-07-13 2019-05-07 Samsung Electronics Co., Ltd. Smart I/O stream detection based on multiple attributes
DE102016003223A1 (de) * 2016-03-16 2017-09-21 Liebherr-Hausgeräte Lienz Gmbh Kühl- und/oder Gefriergerät
KR101858237B1 (ko) * 2016-04-07 2018-05-16 주식회사 대우전자 홈바를 구비한 냉장고 및 냉장고용 열풍유닛
EP3532781B1 (de) * 2016-10-26 2023-03-29 Whirlpool Corporation In die kühlschrankrückseite integrierte aussenhautverflüssigerkonstruktion
US10488102B2 (en) * 2017-09-07 2019-11-26 Bsh Hausgeraete Gmbh Household cooling appliance with an ice tray and a cooling device in a door
CN115014032B (zh) * 2021-03-03 2023-11-07 青岛海尔电冰箱有限公司 门体及其冰箱

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JP2001074352A (ja) * 1999-09-07 2001-03-23 Fuji Electric Co Ltd 車載用保冷保温ボックス

Also Published As

Publication number Publication date
EP2420773A3 (de) 2014-10-08
US20120023986A1 (en) 2012-02-02
EP2420773A2 (de) 2012-02-22

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