EP2789947A1 - Kühlschrank - Google Patents

Kühlschrank Download PDF

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Publication number
EP2789947A1
EP2789947A1 EP12854870.8A EP12854870A EP2789947A1 EP 2789947 A1 EP2789947 A1 EP 2789947A1 EP 12854870 A EP12854870 A EP 12854870A EP 2789947 A1 EP2789947 A1 EP 2789947A1
Authority
EP
European Patent Office
Prior art keywords
door
heat
insulating material
refrigerator
vacuum 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.)
Granted
Application number
EP12854870.8A
Other languages
English (en)
French (fr)
Other versions
EP2789947B1 (de
EP2789947A4 (de
Inventor
Tokimi ABE
Tomoyasu Saeki
Ikuo Ishibashi
Makoto Oikawa
Takaaki Yoshida
Takashi KOMABA
Masanori Abe
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.)
Toshiba Lifestyle Products and Services Corp
Original Assignee
Toshiba Corp
Toshiba Lifestyle Products and Services Corp
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 Toshiba Corp, Toshiba Lifestyle Products and Services Corp filed Critical Toshiba Corp
Publication of EP2789947A1 publication Critical patent/EP2789947A1/de
Publication of EP2789947A4 publication Critical patent/EP2789947A4/de
Application granted granted Critical
Publication of EP2789947B1 publication Critical patent/EP2789947B1/de
Not-in-force 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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/028—Details
    • 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
    • F25D2201/00—Insulation
    • F25D2201/10—Insulation with respect to heat
    • F25D2201/14—Insulation with respect to heat using subatmospheric pressure

Definitions

  • An embodiment of the present invention relates to a refrigerator.
  • a refrigerator has a vacuum heat-insulating material filled between an outer box and an inner box thereof, the outer box and the inner box constituting a heat-insulating case that is a refrigerator body.
  • the refrigerator also has a vacuum heat-insulating material filled between an inner plate and an outer plate thereof that constitute a door for opening and closing a front opening portion of the heat-insulating case.
  • a conventional refrigerator does not have a vacuum heat-insulating material disposed in the vicinity of an end of the door, that faces the front end (close to the door) of a side wall portion of the heat-insulating case, since there are provided a gasket and the like. Therefore, heat insulation in the vicinity of the end of the door is lost, thereby having a problem that the effect of heat insulation as the entire refrigerator goes down and water condensation occurs in the vicinity of the end of the door.
  • the present invention has an object to provide a refrigerator capable of enhancing heat insulation performance in the vicinity of the end of the door which is for opening and closing the front opening portion of the heat-insulating case.
  • a refrigerator including: a refrigerator body configured as a heat-insulating case by putting a vacuum heat-insulating material between an inner box and an outer box thereof; and a door for opening and closing a front opening portion of the heat-insulating case, wherein the door has a vacuum heat-insulating material put between an inner plate and an outer plate thereof, and wherein an end of the vacuum heat-insulating material of the door, which is positioned at a side of a side wall of the heat-insulating case, extends an outer side with respect to an inner plate surface of the side wall.
  • FIG. 1 is a perspective view showing the whole structure of a refrigerator according to the embodiment of the present invention.
  • a refrigerator 1 includes a heat-insulating case 3 comprised of an inner box and an outer box with a vacuum heat-insulating material put therebetween.
  • the heat-insulating case 3 includes a top plate portion 5 that constitutes a top wall thereof as the ceiling, a bottom plate portion 7 that constitutes a bottom wall thereof, a left plate portion 9 that constitutes a left sidewall thereof, a right plate portion 11 that constitutes a right sidewall thereof, and a back plate portion 13 that constitutes a back wall thereof.
  • the right plate portion 11, the bock plate portion 13, and the bottom plate portion 7 are kept out of sight in FIG. 1 .
  • refrigerated-room hinged-double-doors 15 and 15 there are mounted refrigerated-room hinged-double-doors 15 and 15, a crisper drawer door 17, an ice-making-room drawer door 19, a first freezer drawer door 21, and a second freezer drawer door 23 on the side of a front opening portion of the heat-insulating case 3 which is surrounded by the top plate portion 5, the bottom plate portion 7, the left plate portion 9, the right plate portion 11, and the back plate portion 13. It is noted that the second freezer door 23 is aligned with the ice-making-room door 19 side by side.
  • a refrigerated room, a crisper, a ice-making room, a first freezer, and a second freezer within the heat-insulating case 3, which are respectively closed by the refrigerated-room doors 15 and 15, the crisper door 17, the ice-making-room door 19, the first freezer drawer door 21, and the second freezer drawer door 23.
  • FIG. 2 is a cross-sectional view of the refrigerator 1 shown in FIG. 1 . To be concrete, it is a cross-sectional view, for example, made by horizontally cutting the middle of the first freezer door 21 of the refrigerator 1 in FIG. 1 . As shown in FIG. 2 , the heat-insulating case 3 of the refrigerator 1 is formed in an almost U-shape surrounded by the left plate portion 9, the right plate portion 11, and the back plate portion 13. The second freezer door 21 is mounted on the front opening portion of the heat-insulating case 3.
  • FIG. 3 is an enlarged sectional view showing a detailed inner structure of a corner where a front end of the left plate portion 9 abuts on a left end of the second freezer door 21, which is within a circle A of a dotted line in the cross-sectional view of the refrigerator 1 shown in FIG. 2 .
  • the first freezer door 21 includes a vacuum heat-insulating material 35 fitted between a door outer plate 31 and a door inner plate 33 thereof.
  • the vacuum heat-insulating material 35 usually has an excess part of a film, such as a laminate film, that surrounds a core material thereof. As shown in FIG. 3 , the excess part of the film is folded while formed as an ear part, such that the ear part adheres to the vacuum heat-insulating material 35. Thereby, the end part of the vacuum heat-insulating material 35 is formed in an almost square. Specifically, while the excess part of the film is formed as an ear part, the ear part is folded from a position of the end of the vacuum heat-insulating material 35 toward the side of the door inner plate 33, and thereby the ear part adheres to the vacuum heat-insulating material 35. That is, as shown in FIG.
  • the ear part adheres to the side surface of a gasket 41 so that the film seals a gap between the vacuum heat-insulating material 35 and the gasket 41, thereby enabling to reinforce an adhering surface part of the vacuum heat-insulating material 35. It is noted that the folded portion is firmly kept hermetically-sealed by an inner binding material.
  • the left plate portion 9, which constitutes a side wall of the refrigerator 1, includes a vacuum heat-insulating material 95 fitted between a left outer plate 91 and a left inner plate 93 thereof.
  • the gasket 41 On an inner surface of the first freezer door 21, the gasket 41 is mounted in the vicinity of the left end of the first freezer door 21.
  • a throat portion 43 In front of the gasket 41, that is, on the right side of the gasket 41 in FIG. 3 , there is provided a throat portion 43 as a protruding portion that is bent obliquely and protrudes widely toward an inner side of the first freezer.
  • An expanded heat-insulating material 37 is filled within the throat portion 43.
  • the throat portion 43 works as a cold air leak prevention portion that closes an escape route of cold air, thereby further enhancing freezing efficiency.
  • the gasket 41 includes a magnet 45 mounted on an end thereof, the end abutting on the front end of the left plate portion 9.
  • the magnet 45 makes the vicinity of the left end of the first freezer door 21 magnetized to the front end of the left plate portion 9.
  • a gasket mounting portion 49 is provided between the air cushion portion 47 and the door inner plate 33 of the first freezer door 21.
  • An insertion portion 51 which is in an arrowhead shape and extends from the air cushion portion 47, is inserted into the gasket mounting portion 49.
  • the gasket mounting portion 49 may be provided with the door inner plate 33 as one body.
  • the gasket mounting portion 49 may be formed as an extension of the door inner plate 33.
  • Fin portions 53 and 55 are mounted between the gasket mounting portion 49 and the air cushion portion 47 and on both sides of the gasket mounting portion 49.
  • the fin portions 53 and 55 prevent a leak of cold air from the first freezer, thereby suppressing water condensation within the first freezer door 21 due to leaked cold air.
  • an ear part formed around the vacuum heat-insulating material 35 of the first freezer door 21 is folded toward the vacuum heat-insulating material 35, and the tip of the folded ear part is positioned at an inner side with respect to the center position of the gasket mounting portion 49 (a side of the right end of the first freezer door 21).
  • FIGS. 4 and 5 are views showing respective temperature characteristics according to the present embodiment and a conventional refrigerator at the corner of the first freezer door, which faces the front end of the left plate portion, the temperature characteristics overlapped on respective structures of the corner.
  • a sign "a” is a point indicating temperature 22. 6 degrees C
  • a sign "b” is a point indicating temperature 16.8 degrees C
  • a sign "c” is a point indicating temperature 11.0 degrees C
  • a sign “d” is a point indicating temperature 5.2 degrees C
  • a sign “e” is a point indicating temperature -0.6 degrees C
  • a sign "f” is a point indicating temperature -6.4 degrees C.
  • FIGS. 4 and 5 show the same temperature range in graphs where a plurality of points showing the same temperatures with the above-described points are connected as respective lines.
  • a temperature characteristic of the conventional refrigerator will be described with reference to FIG. 5 .
  • a vacuum heat-insulating material 101 of the first freezer door 21 does not extend to the vicinity of the left end of the first freezer door 21 and is terminated at the throat portion which is positioned before the left end of the first freezer door 21. Therefore, in the temperature range of the conventional refrigerator, a temperature range for water condensation, which is between the temperature 22.6 degrees C indicated by the sign "a" and the temperature 16.8 degrees C indicated by the sign "b", resides in the corner where a vacuum heat-insulating material does not exist, thereby having a possibility of water condensation at the corner.
  • the vacuum heat-insulating material 35 of the first freezer door 21 extends to the vicinity of the left end of the first freezer door 21 so as to overlap a tip of the vacuum heat-insulating material 95 of the left plate portion 9, the tip extending toward the first freezer door 21, when viewed from the door outer plate 31 in FIG. 3 . Therefore, in the temperature range of the refrigerator according to the present embodiment, the temperature range for water condensation, which is between the temperature 22.6 degrees C indicated by the sign "a" and the temperature 16.8 degrees C indicated by the sign "b", resides in the corner where the vacuum heat-insulating material 35 of the first freezer door 21 exists. Thus, the temperature range for water condensation at the corner lies within the vacuum heat-insulating material 35. That is, the temperature range for water condensation is closed within the vacuum heat-insulating material 35, thereby having no possibility of water condensation at the corner.
  • the vacuum heat-insulating material 35 of the first freezer door 21 is put between the door outer plate 31 and the door inner plate 33 and extends to the vicinity of the left end of the first freezer door 21.
  • the vacuum heat-insulating material 35 extends over the tip, which extends toward the first freezer door 21, of the vacuum heat-insulating material 95 of the left plate portion 9, so as to overlap the tip when viewed from the door outer plate 31 in FIG. 3 .
  • the sentence “extend over the tip, which extends toward the first freezer door 21, of the vacuum heat-insulating material 95 of the left plate portion 9 so as to overlap the tip when viewed from the door outer plate 31 in FIG. 3 " means that "the vacuum heat-insulating material 35 of the first freezer door 21 has its left end extending to an outer side (a side of the left end of the first freezer door 21) with respect to the center position of the gasket mounting portion 49 of the gasket 41 for example by 3 mm or more". Thereby, it is possible to enhance the heat insulation performance and prevent the occurrence of water condensation in the vicinity of the left end of the first freezer door 21.
  • the expanded heat-insulating material 37 expanded polystyrene or the like
  • the left end of the first freezer door 21 of the vacuum heat-insulating material 35 extending to the outer side with respect to the center position of the gasket mounting portion 49 (the side of the left end of the first freezer door 21), it is possible to increase the coverage of the vacuum heat-insulating material with respect to the size of a front view, that is the size viewed from the front of the heat-insulating case 3. Therefore, it is possible to enhance the heat insulation performance at the corner of the first freezer door 21 which opposes to the front end of the left plate portion 9. As a result, it is possible to enhance the heat insulation performance of the refrigerator 1 and prevent water condensation.
  • the present embodiment describes the structure of the corner of the first freezer door 21 which opposes to the front end of the left plate portion 9.
  • the corners of the refrigerator doors 15 and 15, the crisper door 17, the ice-making room door 19, the second freezer door 23, which oppose to the front end of the left plate portion 9, and the corners of the refrigerator doors 15 and 15, the crisper door 17, the ice-making room door 19, the second freezer door 23, which oppose to the front end of the right plate portion 11, also have a similar structure.
  • the refrigerator 1 has the top plate portion 5, the bottom plate portion 7, the left plate portion 9, the right plate portion 11, and the back plate portion 13 provided separately. These plates are joined together to constitute the heat-insulating case 3 of the refrigerator 1. That is, a plurality of outer box plate members which constitutes the outer box of the heat-insulating case 3 is provided separately. However, the present embodiment is not limited to this. The plurality of outer box plate members may be provided as one body to form the outer box as one plate. Similarly, a plurality of inner box plate members which constitutes the inner box of the heat-insulating case 3 is provided separately. However, the present embodiment is not limited to this. The plurality of inner box plate members may be provided as one body to form the inner box as one 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)
  • Refrigerator Housings (AREA)
EP12854870.8A 2011-12-06 2012-12-03 Kühlschrank Not-in-force EP2789947B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011267139A JP5851223B2 (ja) 2011-12-06 2011-12-06 冷蔵庫
PCT/JP2012/081282 WO2013084844A1 (ja) 2011-12-06 2012-12-03 冷蔵庫

Publications (3)

Publication Number Publication Date
EP2789947A1 true EP2789947A1 (de) 2014-10-15
EP2789947A4 EP2789947A4 (de) 2015-07-29
EP2789947B1 EP2789947B1 (de) 2017-08-09

Family

ID=48574211

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12854870.8A Not-in-force EP2789947B1 (de) 2011-12-06 2012-12-03 Kühlschrank

Country Status (5)

Country Link
EP (1) EP2789947B1 (de)
JP (1) JP5851223B2 (de)
CN (1) CN104114965B (de)
TW (1) TWI621821B (de)
WO (1) WO2013084844A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6105242B2 (ja) * 2012-09-25 2017-03-29 東芝ライフスタイル株式会社 冷蔵庫
JP6230294B2 (ja) * 2013-06-25 2017-11-15 東芝ライフスタイル株式会社 冷蔵庫
JP2015031442A (ja) * 2013-08-02 2015-02-16 日立アプライアンス株式会社 冷蔵庫
JP6517858B2 (ja) * 2017-02-27 2019-05-22 東芝ライフスタイル株式会社 冷蔵庫
JP6854314B2 (ja) * 2019-04-12 2021-04-07 東芝ライフスタイル株式会社 冷蔵庫

Family Cites Families (18)

* Cited by examiner, † Cited by third party
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FR1083712A (fr) * 1952-07-09 1955-01-12 Thomson Houston Comp Francaise Perfectionnements aux meubles réfrigérateurs
JPS56141989U (de) * 1980-03-26 1981-10-27
JPS5980685U (ja) * 1982-11-24 1984-05-31 株式会社日立製作所 冷蔵庫の扉構造
JPS5998287U (ja) * 1982-12-22 1984-07-03 株式会社日立製作所 真空断熱材固定構造
DE9204365U1 (de) * 1992-03-31 1992-07-02 Liebherr-Hausgeraete Gmbh, 7955 Ochsenhausen Wandelement und/oder Tür mit niedrigem Wärmedurchgangskoeffizient
DE4409091A1 (de) * 1994-03-17 1995-09-21 Licentia Gmbh Kühlgerät mit vakuumisolierten Wänden
US5632543A (en) * 1995-06-07 1997-05-27 Owens-Corning Fiberglas Technology Inc. Appliance cabinet construction
JPH10141583A (ja) * 1996-11-15 1998-05-29 Sanyo Electric Co Ltd 断熱壁体
JP4238475B2 (ja) * 2000-11-06 2009-03-18 パナソニック株式会社 冷蔵庫
KR20040094790A (ko) * 2002-03-13 2004-11-10 마쓰시타 레키 가부시키가이샤 냉장고
JP2004340194A (ja) * 2003-05-13 2004-12-02 Toshiba Corp 真空断熱材及び冷蔵庫
JP4603817B2 (ja) * 2004-05-19 2010-12-22 日立アプライアンス株式会社 真空断熱材、及び真空断熱材を用いた冷蔵庫、並びに真空断熱材の製造方法
JP2006084077A (ja) * 2004-09-15 2006-03-30 Hitachi Home & Life Solutions Inc 真空断熱材、及び真空断熱材を用いた冷蔵庫
JP2007113748A (ja) * 2005-10-24 2007-05-10 Hitachi Appliances Inc 断熱壁の製造方法、並びに断熱ユニット及び断熱材
JP2007240021A (ja) * 2006-03-06 2007-09-20 Matsushita Electric Ind Co Ltd 折畳み式保冷庫
US20110095669A1 (en) * 2009-10-22 2011-04-28 Moon William T Refrigerator vacuum insulation application
JP5513855B2 (ja) * 2009-11-11 2014-06-04 株式会社東芝 冷蔵庫
JP5337681B2 (ja) * 2009-12-08 2013-11-06 株式会社東芝 冷蔵庫

Also Published As

Publication number Publication date
TWI621821B (zh) 2018-04-21
JP2013119980A (ja) 2013-06-17
WO2013084844A1 (ja) 2013-06-13
EP2789947B1 (de) 2017-08-09
CN104114965B (zh) 2016-10-12
TW201341741A (zh) 2013-10-16
CN104114965A (zh) 2014-10-22
JP5851223B2 (ja) 2016-02-03
EP2789947A4 (de) 2015-07-29

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