EP3004758A1 - Réfrigérateur domestique comportant une paroi à structure multicouche et procédé de fabrication d'une structure multicouche - Google Patents

Réfrigérateur domestique comportant une paroi à structure multicouche et procédé de fabrication d'une structure multicouche

Info

Publication number
EP3004758A1
EP3004758A1 EP14729271.8A EP14729271A EP3004758A1 EP 3004758 A1 EP3004758 A1 EP 3004758A1 EP 14729271 A EP14729271 A EP 14729271A EP 3004758 A1 EP3004758 A1 EP 3004758A1
Authority
EP
European Patent Office
Prior art keywords
insulating layer
thickness
insulation layer
thermal insulation
layer
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.)
Ceased
Application number
EP14729271.8A
Other languages
German (de)
English (en)
Inventor
Frank Bailly
Andreas Kleiner
Jörg STELZER
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3004758A1 publication Critical patent/EP3004758A1/fr
Ceased legal-status Critical Current

Links

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
    • F25D23/065—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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the invention relates to a household refrigerator with an interior for receiving food, which is limited by walls. At least one wall has a multilayer construction.
  • This multilayer structure comprises at least a first deformable thermal insulation layer of a first thermally insulating material.
  • the first thermal insulation layer is formed with at least two different thicknesses in the structure.
  • the invention relates to a method for producing a wall defining an interior of a domestic refrigerator, which is formed with a multi-layered structure.
  • Domestic refrigerators such as refrigerators, freezers or refrigerated combined freezers usually include an inner container, which limits with its walls an interior in which the food for storage and preservation are introduced.
  • This inner container is usually surrounded by an outer housing, wherein at least one thermal insulation material is introduced in an intermediate space between this outer housing and the inner container.
  • thermal insulation materials can be foams.
  • vacuum insulation panels are also known, which can be introduced in such a space in addition to or instead of the foam material.
  • these walls bounding the interior may also be designed to be uneven, in particular on the sides facing the interior, the gap is then correspondingly designed to be unevenly thick.
  • Such desired and defined unevenness on an inner side can preferably be used to secure compartment space divider on the vertical sides.
  • the gap is narrowed at these points, as it were.
  • the introduced thermal insulation material is therefore thinner at this point than at locations in the intermediate space at which no such depressions or desired unevennesses are provided on the inside of these walls.
  • the effect occurs during manufacture that the material shrinks.
  • This shrinkage also depends, in particular in the case of foams, essentially on how the respective material thickness of the foam is formed.
  • a greater shrinkage in the areas can be seen, in which this insulation material thickness is greater than other areas.
  • this transition region then forms an undesirable deformation of the inside of a wall bounding the interior during the shrinkage process of the insulation material, so that this no longer flat, but is deformed undesirable curved.
  • An inventive household refrigerator comprises an interior for receiving food, which is limited by walls. At least one such wall has a multilayer structure which comprises at least a first deformable thermal insulation layer of a first thermally insulating material. The first thermal insulation layer is formed with at least two different thicknesses in the structure.
  • An essential idea of the invention is to be seen in that the multilayer construction has at least one second deformable thermal insulation layer made of a second thermally insulating material softer to the first thermally insulating material. The second thermal insulation layer is disposed in the region in which the first insulation layer has the smaller thickness.
  • a layer structure is formed in which an additional material component different from the first thermal insulation material is added at very locally specified locations.
  • this additional material component is specified in terms of its properties in comparison to the first material in that it is softer of the composition and of the structure with regard to force effects or deformations than the first thermally insulating material.
  • the second thermally insulating material is a flexible foam.
  • soft foam is a soft foam made of polyester.
  • flexible foam panels made of polyurethane are possible.
  • the material thickness of the second insulation layer is substantially the same at all points. However, it can also be provided that the thickness of this second insulation layer varies locally. Depending on the thickness configuration of the first insulation layer and in particular the shape of the transitions between two different thicknesses of this first thermal insulating material, the thickness configuration of the second insulation layer can be formed depending on the situation and needs. It is preferably provided that the second insulation layer has a thickness between 1 mm and 5 mm, in particular between 2 mm and 3 mm. Such material thicknesses of this second insulating layer in particular satisfy the requirements resulting from the thickness variation of the first insulating layer to prevent unwanted deformations of the visible inner side of the wall at the transitions between the thicknesses of the first insulating layer.
  • the first insulation layer is thicker than the second insulation layer.
  • even relatively thin second insulation layers are sufficient to prevent or compensate for the aforementioned disadvantageous effect of the shrinkage differences at different thicknesses of the first insulation layer.
  • the thickness of the wall is not unnecessarily increased, so that the useful volume of the interior is not restricted.
  • the first insulating layer in the region with its smaller thickness is threefold thicker than the second insulating layer. This again makes it clear that the desired effect is achieved with a very thin second insulating layer, on the other hand seen that the first insulating layer can then be formed with the largest possible smaller thickness, so that here the thermal insulation effect is not undesirably reduced.
  • the second insulating layer is arranged closer to the inner space in the structure than the first insulating layer.
  • the first insulating layer is at least partially formed as rigid foam, in particular polyurethane.
  • the first insulating layer is formed at least partially from airgel.
  • the thickness of the first insulating layer in a cross section changes at least twice, in particular changes from a first larger thickness to a second smaller thickness and then again to a greater thickness.
  • Such a thickness jump which represents a groove-like depression, can be used for example for receiving door racks in a door or for receiving dividers on vertical side walls.
  • the second insulating layer is applied only in the region of the second smaller thickness of this cross-sectional contour.
  • this second insulation layer is formed and arranged over its entire area in this area with the second smaller thickness.
  • the multilayer construction is produced such that it is arranged in a foam mold during production and the foam mold has an uneven contact surface or molding surface at the region where the first insulation layer has a smaller thickness.
  • the uneven abutment surface may be shaped to be oriented away from the multi-layered structure to transition to the region of greater thickness of the first insulating layer. Additionally or instead, it may also be provided that this uneven contact surface is formed at the transition of the thickness variation of the first insulating layer away from the transition in the direction of the region with the thicker thickness of the first insulating layer oriented away from the structure.
  • the invention relates to a method for producing a wall delimiting an interior of a domestic refrigerator, which is formed with a multilayer structure having at least one first deformable thermal insulation layer of a first thermally insulating material.
  • the first thermal Insulation layer is formed with at least two different thicknesses in the structure.
  • the multilayer structure is formed with at least one second deformable thermal insulation layer made of a second thermally insulating material which is softer than the first thermally insulating material.
  • the second thermal insulation layer is formed in the region in which the first insulation layer has the smaller thickness.
  • Advantageous embodiments of the household refrigerator according to the invention are to be regarded as advantageous embodiments of the method according to the invention.
  • Walls delimiting an interior are given in particular by vertical opposite side walls, a rear wall, a ceiling wall, a bottom wall and by a front door.
  • Each of these specified walls, taken as such, should be understood as a continuous plate-like structure, in each of which such a multi-layered construction is designed with at least a single thickness variation of the first thermal insulation layer.
  • the foaming mold is provided with a protrusion.
  • the survey can be formed as a flat surface. In this embodiment, it is then further advantageous that the survey is formed adjacent to the flat surface in concave curved contact surface areas.
  • the flat surface then preferably extends over the dimensions in which the thinner thickness of the first insulating material is provided, and by the then relatively gentle, not discretely stepped transition of the unevenness of the contact surface but by concave curved transitions, the shrinkage behavior at the transition of the different Thickness of the first insulating material advantageously influenced accordingly, so that after completion of the shrinking process, the desired final shape of the inside of the wall is formed and here according to the individual generated inner side surface areas this is then designed as flat as possible.
  • the elevation is formed as a convexly curved dome.
  • this convexly curved dome which is correspondingly convex in cross-section, extends beyond the dimensions of the region in which the first insulating layer is formed with a thinner thickness.
  • the convex contour is formed such that the points of the transition region between the thicknesses of the first insulation layer are defined by their ends or edges.
  • This convex contour thus ends with the ends and edges exactly at the points where the transition between the thinner thickness to the greater thickness of the first insulating layer is then to occur.
  • the shrinkage behavior is taken into account in the transition area and adapted accordingly, so that here, a corresponding compensation can be realized.
  • the shape and depth of the unevenness of the abutment surface is dependent on the difference in thickness of the first insulating layer at the transition between the smaller and the larger thickness and / or the absolute thickness of the first insulating layer.
  • the multilayer structure with at least one second deformable thermal insulation layer is formed from a second thermally insulating material which is softer than the first thermally insulating material.
  • the second thermal insulation layer is formed in the region in which the first insulation layer has the smaller thickness.
  • Fig. 1 is a perspective view of an embodiment of a household refrigerator according to the invention
  • Fig. 2 is a longitudinal sectional view through the household refrigerator of FIG. 1;
  • Fig. 3 is a horizontal sectional view of the door of the household refrigerator according to
  • Fig. 4 is an exploded view of an embodiment of a multilayer structure of a wall which defines an interior of the household refrigerator 1, the illustration in Fig. 4 at a such location is shown, on which a first insulating layer of this construction has a relation to other areas smaller thickness;
  • Fig. 5 shows another embodiment of a multilayer structure of a
  • Interior limiting wall in the area in which a smaller thickness of the first insulating layer is provided, wherein in addition an embodiment of a specific shape of a foaming mold is shown;
  • Fig. 6 shows a further embodiment in comparison to Fig. 5, in which the
  • Embodiment of the foaming mold is different.
  • a household refrigeration appliance 1 is shown in a perspective view, which may be designed as a refrigerator or freezer or fridge-freezer combination device.
  • the household refrigerating appliance 1 comprises an outer casing 2, which surrounds inner containers 3 and 4, which may be designed as separate inner containers or in one piece.
  • the inner container 3 defines a first inner space 5, and the inner container 4 defines a second inner space 6.
  • the two inner spaces 5 and 6 are provided for receiving food.
  • the interiors 5 and 6 are each bounded by side walls, rear walls, floors and ceilings of the inner container 3 and 4.
  • the inner containers 3 and 4 On the front side, the inner containers 3 and 4 have a loading opening, which can be closed by a door 7.
  • the inner container 3 comprises the walls 3a, 3b, 3c and 3d, whereas the inner container 4 has the walls 4a, 4b, 4c and 4d.
  • the door 7 is in the sense of a wall that defines the interiors 5 and 6.
  • a gap 8 (FIG. 4) is formed, in which thermally insulating material is introduced.
  • a correspondingly thermally insulating material is introduced in a corresponding intermediate space 8 between the inner container 4 and the outer housing 2.
  • the household refrigerator 1 without the door 7 is shown on the front.
  • the gaps 8 can be seen in this illustration in section (xy plane) as well.
  • FIG. 7 an enlarged representation of a horizontal section and thus of the section in the xz plane of the door 7 is shown in FIG.
  • the door 7 also comprises an inner end part 9, which thus faces the inner space, and an outer end part 10, which form the shell, as it were.
  • a thermally insulating material such as an insulating foam or an airgel.
  • a thickness d 1 which represents the thickness of the thermally insulating material, is greater in a region I than in a region II in which the thickness is only d 2.
  • the thickness d3 is given, which in turn is greater than the thickness d2.
  • the inner end part 9 in the region II has a convexly curved shape.
  • a according to an embodiment in Fig. 4 shown multilayer structure 13 is formed.
  • a first thermal insulation layer 14 of a first thermally insulating material for example of an insulation foam or airgel, is arranged between the closure part 10 and the closure part 9.
  • This insulation layer 14 is attached to the termination part 10 via an adhesive layer 15.
  • a further adhesive layer 16 is provided, with which the first insulation layer 14 is fastened to the termination part 9.
  • a foaming mold 17 as shown in FIG. 5 is designed specifically.
  • the foam mold 17 has a carrier 18 on which an insert 19 is arranged.
  • the insert 19 is uneven on its side facing the material for the layer structure 13 side 19a.
  • a convex curvature is formed. This convex curvature profile of the inner side 19a terminates with ends 19b and 19c preferably exactly at the locations where the transitions 1 1 and 12 are provided in the finished state.
  • this foaming mold 17 it is thus possible that already in the manufacturing process on the expected degree of shrinkage at the areas of Transitions 1 1 and 12 takes place a pre-compensation, so that then in the cured or when terminating the shrinkage, a desired shape, as shown in Fig. 3, is achieved.
  • FIG. 5 another embodiment of a multilayer construction 13 is shown.
  • an additional second insulating layer 20 is provided in the exemplary embodiment in FIG. 5, which is arranged in particular directly following the first insulating layer 14.
  • this second thermal insulation layer 20 made of a second thermal insulation material is thinner than the first insulation layer 14.
  • the thickness of the second thermal insulation layer 20 is preferably between 1 mm and 5 mm, in particular between 2 mm and 3 mm.
  • the material of the second thermal insulation layer 20 is preferably flexible foam, in particular flexible polyurethane foam.
  • the material of the first thermal insulation layer 14 may be formed as rigid foam or airgel.
  • this second thermal insulation layer 20 is formed only in the region II, and in the regions I and III this second thermal insulation layer 20 is not present, a compensation of due to different degrees of shrinkage is likewise provided associated undesirable deformations in the area II or in the areas at the transitions 1 1 and 12 reached.
  • FIG. 6 shows a further exemplary embodiment in which an alternative embodiment of the foam mold 17 is formed in comparison to the representation in FIG. 5 and according to the use also for the exemplary embodiment in FIG. 4.
  • the foam mold 17, which is designed in particular in one piece, an uneven shape of the material of the layer sequence to be designed, as given by the multilayer structure 13, facing side 17a in particular a trapezoidal shape in cross-section, formed.
  • a survey 21 is formed, which has a flat side 21 a over the entire extent of the region to be generated II.
  • This contact surface or shape specification surface of this page 21 a is thus designed flat.
  • the survey ends 21 and the side 17 a then falls off to the side in a curved, in particular concave shape.
  • the survey 21 in Fig. 6 corresponds in terms of functionality and the insert 19. This insert 19 is thus to be seen as a survey.
  • the material is introduced and the foam mold 17 at a transition region 1 1, 12, in which a Thickness change of the first insulating layer 14 is formed, with an inner side 17 a provided with an uneven contact surface 21 a and 19 respectively.
  • This unevenness is defined in a defined manner so that the outer end shape of the wall, in the present case the door 7, arises in the case of a subsequent different shrinkage of the first thermal insulation material due to the different layer thicknesses of the first insulation layer 14.
  • FIGS. 4 to 6 also apply to other walls which delimit the interior spaces 5 and 6.
  • the walls are not understood as meaning the individual wall parts 3a to 3d and 4a to 4d of the inner containers 3 and 4, but each understood a wall formed by a multi-layered structure 13.

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)

Abstract

L'invention concerne un réfrigérateur domestique (1) qui comporte un espace intérieur (5, 6) qui est destiné à recevoir des aliments et qui est délimité par des parois. Une paroi au moins a une structure multicouche (13) qui comporte au moins une première couche d'isolation thermique déformable (14) constituée d'un premier matériau thermiquement isolant. La première couche d'isolation thermique (14) présente au moins deux épaisseurs différentes (d1, d2, d3) dans la structure (13). La structure multicouche (13) comporte au moins une seconde couche d'isolation thermique déformable (20) constituée d'un second matériau thermiquement isolant plus souple que le premier matériau thermiquement isolant. La seconde couche d'isolation thermique (20) est disposée dans la région (II) de la structure (13) dans laquelle la première couche isolante (14) a la plus petite épaisseur (d2). L'invention concerne également un procédé de fabrication d'une paroi qui délimite un espace intérieur (5, 6) d'un réfrigérateur domestique (1).
EP14729271.8A 2013-06-06 2014-06-03 Réfrigérateur domestique comportant une paroi à structure multicouche et procédé de fabrication d'une structure multicouche Ceased EP3004758A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013210484.7A DE102013210484A1 (de) 2013-06-06 2013-06-06 Haushaltskältegerät mit einer mehrschichtig aufgebauten Wand sowie Verfahren zum Herstellen eines mehrschichtigen Aufbaus
PCT/EP2014/061459 WO2014195298A1 (fr) 2013-06-06 2014-06-03 Réfrigérateur domestique comportant une paroi à structure multicouche et procédé de fabrication d'une structure multicouche

Publications (1)

Publication Number Publication Date
EP3004758A1 true EP3004758A1 (fr) 2016-04-13

Family

ID=50928089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14729271.8A Ceased EP3004758A1 (fr) 2013-06-06 2014-06-03 Réfrigérateur domestique comportant une paroi à structure multicouche et procédé de fabrication d'une structure multicouche

Country Status (3)

Country Link
EP (1) EP3004758A1 (fr)
DE (1) DE102013210484A1 (fr)
WO (1) WO2014195298A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11692763B2 (en) 2020-10-30 2023-07-04 Whirlpool Corporation Insulation materials for a vacuum insulated structure and methods of forming
US12072140B2 (en) 2020-12-30 2024-08-27 Whirlpool Corporation Insulation materials for a heat and sound insulated structure and methods of forming with a mold that is gas and liquid permeable

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01219486A (ja) * 1988-02-26 1989-09-01 Sharp Corp 断熱扉
JPH0217374A (ja) * 1988-07-04 1990-01-22 Sanden Corp 保冷庫
DE19915456A1 (de) * 1999-04-01 2000-10-05 Bsh Bosch Siemens Hausgeraete Wärmeisolierende Wandung
US20090179541A1 (en) * 2007-12-12 2009-07-16 Nanopore, Inc. Vacuum insulation panel with smooth surface method for making and applications of same
DE102008026528A1 (de) * 2008-06-03 2009-12-10 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät, insbesondere Kältegerät, sowie Verfahren zum Herstellen eines Verbundkörpers und Vorschäumform zur Durchführung des Verfahrens
WO2012062314A1 (fr) * 2010-11-08 2012-05-18 A/S Vestfrost Réfrigérateur doté d'un tampon thermique
DE102011075390A1 (de) * 2011-05-06 2012-11-08 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät, insbesondere Haushaltskältegerät

Non-Patent Citations (2)

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Title
None *
See also references of WO2014195298A1 *

Also Published As

Publication number Publication date
WO2014195298A1 (fr) 2014-12-11
DE102013210484A1 (de) 2014-12-11

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