EP1338854B1 - Réfrigérateur à vide isolant avec structure modulaire composée de cadres et plaques - Google Patents

Réfrigérateur à vide isolant avec structure modulaire composée de cadres et plaques Download PDF

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Publication number
EP1338854B1
EP1338854B1 EP20020004224 EP02004224A EP1338854B1 EP 1338854 B1 EP1338854 B1 EP 1338854B1 EP 20020004224 EP20020004224 EP 20020004224 EP 02004224 A EP02004224 A EP 02004224A EP 1338854 B1 EP1338854 B1 EP 1338854B1
Authority
EP
European Patent Office
Prior art keywords
frame
refrigerator cabinet
elements
cabinet according
liner
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 - Fee Related
Application number
EP20020004224
Other languages
German (de)
English (en)
Other versions
EP1338854A1 (fr
Inventor
Whirlpool Europe S.r.l. Grittner Gunter
Paolo Whirlpool Europe S.r.l. Molteni
Fiorenzo Whirlpool Europe s.r.l. Casoli
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 Corp
Original Assignee
Whirlpool 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 Whirlpool Corp filed Critical Whirlpool Corp
Priority to ES02004224T priority Critical patent/ES2337233T3/es
Priority to DE60234673T priority patent/DE60234673D1/de
Priority to EP20020004224 priority patent/EP1338854B1/fr
Publication of EP1338854A1 publication Critical patent/EP1338854A1/fr
Application granted granted Critical
Publication of EP1338854B1 publication Critical patent/EP1338854B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/062—Walls defining a cabinet
    • F25D23/063—Walls defining a cabinet formed by an assembly of panels
    • 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
    • F25D2201/12—Insulation with respect to heat using an insulating packing material
    • F25D2201/126—Insulation with respect to heat using an insulating packing material of cellular type
    • F25D2201/1262—Insulation with respect to heat using an insulating packing material of cellular type with open cells
    • 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
    • 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
    • F25D2400/40—Refrigerating devices characterised by electrical wiring

Definitions

  • the present invention relates to a refrigerator cabinet having an inner box-shaped liner and an outer liner which together define a double-walled vacuum-insulating structure and a manufacturing method thereof.
  • refrigerator we mean every kind of domestic appliance in which the inside temperature is lower than room temperature, i.e. domestic refrigerators, vertical freezers, chest freezer or the like.
  • the main problem is to sustain the vacuum for times of 10-15 years (usual life of a domestic appliance) without increasing too much the production cost of the product. While the traditional method, which consists in welding "vacuum-tight" structures (mostly of stainless steel), is very expensive (both in process and especially in material cost aspects), the refrigerator cabinets produced with the more cost-effective system which makes use of plastic liners (with or without anti-diffusion claddings) have a limited lifetime and therefore they are not yet in production.
  • US-A-6053594 shows a vacuum-insulated refrigerator in which outer and inner layers are connected to one another in vacuum-tight fashion by a connecting flat profile.
  • US-A-4134518 shows a similar construction for a cold box.
  • US-A-6053594 discloses a refrigerator cabinet and accordingly a manufacturing method thereof according to the preamble of claim 1 and 13.
  • the object of this invention is to provide a refrigerator cabinet of the above type that widely maintains the diffusion-performance of welded structures by using metal as diffusion barrier, but with a significant reduction of the material cost.
  • the inner liner is seen by the consumer, and therefore is preferably made from aesthetically valuable and mechanically resistant stainless steel of 0,3-1,0 mm thickness
  • the outer liner especially in the case of built-in products, is neither an esthetical element nor mechanically stressed, and could be made even of much thinner films.
  • the present invention discloses how to meet the high requests of vacuum-tightness with a suitable design and cost-effective production method for the outer liner.
  • the frame consists of structural bars and corner-like connecting elements and/or prefabricated combinations of those that have several functions, mainly they keep the inner and the outer shells on distance in the front area, integrating functional elements and space for wiring, front frame heating etc., and closing in a vacuum-tight way the front opening between the inner and the outer liner.
  • the frame elements are engineered in a way that the inner liner, in a first step of the production process, can be attached to them in a "vacuum-tight" way (glued, welded, hot-sealed or in other ways).
  • the frame elements can be joined together in a way to create a space between the inner liner and the outer liner that has to be assembled.
  • This space is filled with vacuum insulation material, preferably in form of evacuable panels, plates or the like, then a thin film is sealed (glued, welded, hot-sealed) to the structural frame, in a way that the metal film creates "vacuum-tight" joints wherever the components of the outer liner finishes (e.g. in the front frame area).
  • the thin film making up the outer liner can be applied in one ore more pieces (foils), to balance handling problems, "vacuum tightness" (reduce the leakage through joints and plastic materials) and material cost.
  • the final result is an outer liner that is vacuum-tight as a welded one, but that has a much lower material thickness and thus lower material cost. Round corners of the frame elements may facilitate the application of the external sealing film of the outer liner, and reduce the amount of film material needed (reduced surface and reduced diffusion).
  • the outer liner is preferably covered by esthetical elements that protect and hide the significant parts of the outer liner.
  • the structural frame of a double-walled vacuum-insulating cabinet A that is made by rectilinear bars B connected by corner elements C, the edges of bars and the corner elements being significantly rounded.
  • the bars B and the corner elements C are made of metal or polymeric material, in the second case the bars being preferably obtained by extrusion and the corner elements being obtained by injection moulding.
  • an inner shell or liner 12 Inside the box-shaped frame 10 it is located an inner shell or liner 12, with low permeability for gases and vapours, for instance a 0.12 mm stainless steel liner whose frontal edge 12a is welded or glued in W to frontal bar 10a as shown in figures 4 and 5 .
  • the space between the corners C and bars B is filled with panels of evacuable insulating material K, for instance open cells expanded polystyrene (EPS), on which an outer liner 14, thinner than the inner liner 12, is placed and welded or glued in W' to bars B and corners C ( figure 5 ).
  • the outer liner 14 can be made of stainless steel foils of 0.12 mm wrapped around and glued/welded on the frame 10.
  • the foil of the outer liner 14 can be bent around one or more edges in order to reduce the number of joints necessary between single foils.
  • the rounded shape of bar B ( figure 4a ) and corner elements C facilitates the application of the outer liner 14.
  • both such components of the cabinet A may be covered with hot-sealable material, at least in the zone of hot-seals, or with another material different from the base material that facilitates the joining process.
  • some of the bars B of the frame 10 may present through holes 16 for the passage of tubes and/or wires (not shown), without affecting the tightness of the double-walled vacuum structure of the cabinet A.
  • the frontal bar 10a of the frame 10 is provided with longitudinal grooves 18a and 18b for hosting electrical cables and the so called “hot tube” respectively.
  • a panel 20 covers the grooves 18a and 18b.
  • the frame 10 is made of polymeric material, its components B and C can be treated with anti-diffusion surface-treatments, or they can be provided with anti-diffusion barriers integrated into them (for instance metal foils).
  • the components of the frame 10 are modular components which allow building any kind of cabinet.
  • the frame 10 may be executed in a modular way using u-shaped elements X with the above described characteristics combined with bar elements, or even bigger components, as shown in the embodiment of figure 7 , in which the top and bottom of the frame 10 are made by sub-assemblies Y.
  • the frame 10 may comprise a complete front and/or rear sub-frame made from one part only, which is a combination of corner and bar elements. The advantage of this type of execution lies in the reduction of joints, thereby reducing the assembly cost of their vacuum-tight execution.

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)
  • Refrigerator Housings (AREA)

Claims (13)

  1. Carrosserie de réfrigérateur (A) ayant un revêtement intérieur en forme de boîte et un revêtement extérieur qui définissent ensemble une structure d'isolation sous vide à double paroi, ladite structure d'isolation sous vide à double paroi comportant un bâti (10) dont les éléments (B, C, X, Y, 10a) sont scellés sur le revêtement extérieur (14), caractérisée en ce que ledit bâti a une forme structurelle de boîte.
  2. Carrosserie de réfrigérateur selon la revendication 1, caractérisée en ce que le revêtement extérieur (14) comporte un film enroulé autour de et scellé sur le bâti (10).
  3. Carrosserie de réfrigérateur selon la revendication 1, caractérisée en ce que le revêtement extérieur (14) comporte plusieurs films scellés chacun sur ledit bâti (10).
  4. Carrosserie de réfrigérateur selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments (B, C, X, Y, 10a) du bâti (10) sont également scellés sur le revêtement intérieur (12).
  5. Carrosserie de réfrigérateur selon l'une quelconque des revendications précédentes, caractérisée en ce que les revêtements intérieur et extérieur (14, 12) sont fabriqués en métal.
  6. Carrosserie de réfrigérateur selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments de bâti (B, C, X, Y, 10a) sont fabriqués en matière plastique.
  7. Carrosserie de réfrigérateur selon les revendications 5 et 6, caractérisée en ce que les éléments (B, C, X, Y, 10a) du bâti (10) et les revêtements intérieur et extérieur (14, 12) sont recouverts, au moins partiellement, avec une couche de matière thermoscellable.
  8. Carrosserie de réfrigérateur selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments (B, C, X, Y, 10a) du bâti (10) présentent des trous débouchants (16) pour le passage de tubes et/ou de fils, afin de faciliter l'étanchéité au vide et améliorer de manière significative la résistance mécanique des jonctions de scellage.
  9. Carrosserie de réfrigérateur selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments de bâti sont conçus pour accueillir un câblage, des supports de vis et d'autres éléments fonctionnels.
  10. Carrosserie de réfrigérateur selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments (B, C, X, Y, 10a) du bâti (10) sont sensiblement arrondis afin de faciliter l'application du revêtement extérieur (14).
  11. Carrosserie de réfrigérateur selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments (B, C, X, Y, 10a) du bâti (10) sont traités avec des traitements de surface anti-diffusion et/ou sont pourvus de barrières de diffusion intégrées à ceux-ci.
  12. Carrosserie de réfrigérateur selon l'une quelconque des revendications précédentes, caractérisée en ce que le bâti (10) comporte des sous-bâtis préfabriqués (X, Y).
  13. Procédé de fabrication d'une carrosserie de réfrigérateur (A) ayant un revêtement intérieur en forme de boîte (12) et un revêtement extérieur (14) qui définissent ensemble une structure d'isolation sous vide à double paroi, ledit processus comportant les étapes suivantes :
    un bâti (10) est installé autour du revêtement intérieur (12) ;
    un panneau isolant (K) est placé sur le revêtement intérieur (12) et entre les éléments (B, C, X, Y, 10a) du bâti (10) ;
    le revêtement extérieur (14) est scellé sur le bâti (10) afin de créer un espace étanche au vide entre les deux revêtements (12, 14), caractérisés en ce que ledit bâti a une forme structurelle de boîte.
EP20020004224 2002-02-26 2002-02-26 Réfrigérateur à vide isolant avec structure modulaire composée de cadres et plaques Expired - Fee Related EP1338854B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES02004224T ES2337233T3 (es) 2002-02-26 2002-02-26 Refrigerador con aislamiento al vacio con estructura modular de bastidor y placa.
DE60234673T DE60234673D1 (de) 2002-02-26 2002-02-26 Vakuumisolierter Kühlschrank mit modularer Rahmen- und Plattenstruktur
EP20020004224 EP1338854B1 (fr) 2002-02-26 2002-02-26 Réfrigérateur à vide isolant avec structure modulaire composée de cadres et plaques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20020004224 EP1338854B1 (fr) 2002-02-26 2002-02-26 Réfrigérateur à vide isolant avec structure modulaire composée de cadres et plaques

Publications (2)

Publication Number Publication Date
EP1338854A1 EP1338854A1 (fr) 2003-08-27
EP1338854B1 true EP1338854B1 (fr) 2009-12-09

Family

ID=27635838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020004224 Expired - Fee Related EP1338854B1 (fr) 2002-02-26 2002-02-26 Réfrigérateur à vide isolant avec structure modulaire composée de cadres et plaques

Country Status (3)

Country Link
EP (1) EP1338854B1 (fr)
DE (1) DE60234673D1 (fr)
ES (1) ES2337233T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10712080B2 (en) 2016-04-15 2020-07-14 Whirlpool Corporation Vacuum insulated refrigerator cabinet
US11752669B2 (en) 2015-12-30 2023-09-12 Whirlpool Corporation Method of fabricating 3D vacuum insulated refrigerator structure having core material

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10355137A1 (de) * 2003-11-26 2005-06-23 BSH Bosch und Siemens Hausgeräte GmbH Kältegerätegehäuse
WO2006011112A1 (fr) * 2004-07-21 2006-02-02 Arcelik Anonim Sirketi Unite isolee
DE102011079209A1 (de) * 2011-07-14 2013-01-17 BSH Bosch und Siemens Hausgeräte GmbH Vakuumisolationselement
JP6021321B2 (ja) * 2011-12-07 2016-11-09 東芝ライフスタイル株式会社 冷蔵庫
US9140481B2 (en) 2012-04-02 2015-09-22 Whirlpool Corporation Folded vacuum insulated structure
US9221210B2 (en) 2012-04-11 2015-12-29 Whirlpool Corporation Method to create vacuum insulated cabinets for refrigerators
DE102012223545A1 (de) * 2012-12-18 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Wandung für ein Haushaltskältegerät mit einem viereckigen Trägerrahmen für einen thermischen Isolationskörper sowie Haushaltskältegerät
EP2778583B1 (fr) * 2013-03-15 2017-03-01 Whirlpool Corporation Structure d'armoire de panneau à vide pour réfrigérateur
JP5833182B2 (ja) * 2014-05-26 2015-12-16 株式会社東芝 冷蔵庫
KR102366410B1 (ko) * 2014-10-16 2022-02-23 삼성전자주식회사 냉장고 및 이에 구비되는 진공 단열재
US10161669B2 (en) * 2015-03-05 2018-12-25 Whirlpool Corporation Attachment arrangement for vacuum insulated door
US10422569B2 (en) 2015-12-21 2019-09-24 Whirlpool Corporation Vacuum insulated door construction
US10018406B2 (en) 2015-12-28 2018-07-10 Whirlpool Corporation Multi-layer gas barrier materials for vacuum insulated structure
US10807298B2 (en) 2015-12-29 2020-10-20 Whirlpool Corporation Molded gas barrier parts for vacuum insulated structure
US11009284B2 (en) 2016-04-15 2021-05-18 Whirlpool Corporation Vacuum insulated refrigerator structure with three dimensional characteristics
US11300354B2 (en) * 2017-10-05 2022-04-12 Whirlpool Corporation Filling ports for insulated structures incorporated within an appliance
KR102511095B1 (ko) 2017-12-13 2023-03-16 엘지전자 주식회사 진공단열체 및 냉장고
KR102466446B1 (ko) 2017-12-13 2022-11-11 엘지전자 주식회사 진공단열체 및 냉장고
KR102466448B1 (ko) * 2017-12-13 2022-11-11 엘지전자 주식회사 진공단열체 및 냉장고
KR102530909B1 (ko) 2017-12-13 2023-05-11 엘지전자 주식회사 진공단열체 및 냉장고
KR102568737B1 (ko) 2017-12-13 2023-08-21 엘지전자 주식회사 진공단열체 및 냉장고
WO2019125372A1 (fr) * 2017-12-18 2019-06-27 Whirlpool Corporation Procédé de fabrication d'une armoire isolée sous vide pour un réfrigérateur
KR102617454B1 (ko) * 2018-06-27 2023-12-26 엘지전자 주식회사 진공단열체, 및 냉장고
US10907891B2 (en) 2019-02-18 2021-02-02 Whirlpool Corporation Trim breaker for a structural cabinet that incorporates a structural glass contact surface
CN113074509A (zh) * 2020-01-06 2021-07-06 青岛海尔电冰箱有限公司 真空绝热体及冰箱
US11906379B2 (en) * 2021-12-06 2024-02-20 Whirlpool Corporation Insulated structure for an appliance
WO2023181433A1 (fr) * 2022-03-23 2023-09-28 日立グローバルライフソリューションズ株式会社 Armoire de stockage

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Publication number Priority date Publication date Assignee Title
CH212271A (de) * 1939-08-11 1940-11-15 Stauffer Paul Kühlschrankisolierung.
US4134518A (en) 1978-01-23 1979-01-16 Bernie Menchen Cold box with breaker strip
DK8600511A (fr) * 1985-02-04 1986-08-05
SE505193C2 (sv) * 1993-12-22 1997-07-14 Electrolux Ab Låda utgörande vakuumisolerade väggar hos ett kyl- eller frysskåp
DE19745827A1 (de) 1997-10-16 1999-05-06 Bosch Siemens Hausgeraete Wärmeisolierende Wandung
DE19915311A1 (de) * 1999-04-03 2000-10-05 Bayer Ag Vakuum Isolier Paneele

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11752669B2 (en) 2015-12-30 2023-09-12 Whirlpool Corporation Method of fabricating 3D vacuum insulated refrigerator structure having core material
US10712080B2 (en) 2016-04-15 2020-07-14 Whirlpool Corporation Vacuum insulated refrigerator cabinet

Also Published As

Publication number Publication date
EP1338854A1 (fr) 2003-08-27
DE60234673D1 (de) 2010-01-21
ES2337233T3 (es) 2010-04-22

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