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EP2614323A2 - Cuve pour appareil frigorifique - Google Patents

Cuve pour appareil frigorifique

Info

Publication number
EP2614323A2
EP2614323A2 EP11748366.9A EP11748366A EP2614323A2 EP 2614323 A2 EP2614323 A2 EP 2614323A2 EP 11748366 A EP11748366 A EP 11748366A EP 2614323 A2 EP2614323 A2 EP 2614323A2
Authority
EP
European Patent Office
Prior art keywords
layer
housing according
barrier layer
carrier layer
shell
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Withdrawn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
EP11748366.9A
Other languages
German (de)
English (en)
Inventor
Dasaradh Kumar Patchala
Jörg STELZER
Frank Bailly
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 Bosch und Siemens 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 Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2614323A2 publication Critical patent/EP2614323A2/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F25D2201/128—Insulation with respect to heat using an insulating packing material of foil type

Definitions

  • the present invention relates to a housing for a refrigeration appliance, in particular a household refrigerator.
  • Such housings conventionally comprise an outer shell, an inner shell defining an interior space of the refrigeration appliance which can be used for storing refrigerated goods, and an insulation material pack which fills a gap between the inner and outer shell. It was found that the insulating effect of
  • the object of the invention is to remedy this disadvantage.
  • the object is achieved by a case for a refrigerator with an outer shell, an inner space bounding inner shell and a
  • the insulation effect is crucial to the low thermal conductivity of the gas contained in their pores.
  • the thermal conductivity of gases generally decreases with increasing molecular weight.
  • the invention is based on the insight that a decrease in the insulating effect of a refrigeration appliance housing may be due to the fact that, originally contained in the pores of the insulating material, heavy gas is diffused over time and replaced by ambient air.
  • An important way in which such diffusion takes place is through the inner shell, which in conventional refrigerators is usually made of polystyrene, in particular HIPS, or acrylonitrile-butadiene-styrene (ABS).
  • the shell of the refrigerator housing on the one hand a diffusion-tight barrier layer made of a suitable plastic, on the other hand a
  • Carrier layer of another, generally cheaper plastic the permeability of the shell can be significantly reduced at low material costs and without sacrificing their mechanical strength, so that the
  • Insulating effect of the housing is maintained over a long time.
  • the barrier layer When the barrier layer is disposed between the carrier layer and the insulating material package, it is effectively protected from external influences, fretting, etc., by the carrier layer.
  • To place the carrier layer between the barrier layer and the insulating material package may be particularly useful if the attachment or creation of the insulating material package is a burden on the barrier layer. This may be the case, in particular, when the insulation material package takes place by expanding synthetic resin, in particular polyurethane, at elevated temperature.
  • the barrier layer can be enclosed between two carrier layers.
  • the multilayer shell In order to ensure a stable cohesion of the multilayer shell, it may be expedient to provide an adhesion-promoting layer between the carrier layer and the barrier layer. To limit the diffusion from the inside to the outside, the permeability of the
  • a barrier layer for a propellant gas used to foam a foam of the insulation material package such as halogenated and non-halogenated alkanes, especially pentane, or carbon dioxide, at least an order of magnitude lower than the permeability of the support layer for that gas.
  • barrier layer Another advantageous effect of the barrier layer is that it also generally diffuses odor carriers from the insulation material package into the interior of the barrier Refrigeration device prevents, which otherwise leads to a deterioration in the quality of
  • Interior could carry stored refrigerated goods.
  • the permeability of the barrier layer for these gases should also be at least one order of magnitude lower than the corresponding permeability of the carrier layer.
  • the material of the carrier layer can be selected substantially from the viewpoint of mechanical strength and material cost; Polyethylene, polypropylene, polystyrene and acrylonitrile-butadiene-styrene are particularly suitable here.
  • PVdC polyvinylidene chloride
  • EVOH ethylene vinyl alcohol
  • a thickness of the barrier layer of between 1 and 20%, preferably between 3 and 10%, of the thickness of the inner or outer shell is sufficient to achieve satisfactory diffusion inhibition. If a surface of the inner or outer shell facing the insulating material package is rougher than its opposite surface, this may improve the integrity of the insulating material package and the shell and counteract the formation of gaps between the insulating material package and the shell.
  • the carrier layer Since the carrier layer itself does not have to significantly contribute to diffusion inhibition, it is even possible to reduce their basis weight compared to a conventional single-layered shell and to save in this way material costs. The reduced basis weight can also lead to better flexibility and thus to a lower risk of tearing this carrier layer under impact.
  • the carrier layer is a foamed layer or comprises such. Such a layer improves the heat-insulating effect of the shell, and moreover, by acting as a buffer, it can improve the impact resistance of the shell.
  • the carrier layer is exposed on the inside or outside of the housing, it is preferred that its foamed layer is protected by a non-porous layer which is formed on the side facing away from the barrier layer side of the carrier layer.
  • Fig. 1 is a schematic horizontal section through an inventive
  • Fig. 2 is a not to scale section through an inner or outer shell of
  • FIG. 3 shows a layer construction of the inner or outer shell that is alternative to FIG. 2.
  • Fig. 1 shows a horizontal section through a housing of a refrigerator with a body 1 and a hinged to the body 1 door 2, which together define an interior space 3.
  • the structure of carcass 1 and door 2 is similar; both comprise an inner shell 4 immediately adjacent to the inner space 3, an outer shell 5 forming the visible exterior of the device housing, and an insulating material package 6 obtained by injecting and expanding polyurethane in a space between inner and outer shells 4 and 5, respectively.
  • Pentane can be used in particular as blowing agent for expanding the polyurethane. Since this gas has a molecular weight considerably higher than that of air, its thermal conductivity is lower than that of air, and by filling the pores of the finished foam, an insulating material package 6 becomes excellent Obtained insulation properties. In order to maintain these insulating properties in the long term, it is important that the pentane remains in the pores and is not replaced by components of the ambient air.
  • Fig. 2 shows a first example of the structure of the plastic sheet.
  • the inner shell 4 shown in section in this figure is composed of a total of five layers, a first carrier layer 7, which is directly adjacent to the inner space 3, a diffusion barrier layer 8, a second carrier layer 9, to the
  • Insulation material package 6 adjacent, and adhesive layers 10, 11, the
  • the first carrier layer 1 can consist of a plastic conventionally used for the production of refrigeration equipment inner containers, such as polystyrene, in particular HIPS, or ABS.
  • the same material can also be used for the production of the second carrier layer 9.
  • the first carrier layer 7 is non-porous
  • the second carrier layer 9, like the insulating material package 6, is a closed-cell foam. The diffusion-tightness of such a foam is reduced compared to a non-porous plastic with the same basis weight, which, however, does not adversely affect, since the task of preventing gas exchange between the atmosphere and the pores of the foams 6, 9, of the
  • Diffusion barrier layer 8 is adopted.
  • a gas exchange between the two foams of the package 6 and the carrier layer 9 is not disturbing, since for both propellant gases of high molecular weight, the mixing of which does not affect the insulating effect, or the same propellant gases can be used.
  • the foam of the second carrier layer 9 contributes to the load capacity of the inner shell 4, while it is much more elastic than the non-porous plastic, the first carrier layer may be thinner than a conventional inner container made of homogeneous Plastic material. This improves the elasticity and the impact resistance of the inner shell 4 in comparison to a conventional, single-layer shell of solid, non-porous plastic.
  • Carrier layer 9 also to that of the insulation material package 6 facing
  • the inner shell 4 is slightly rough. This improves the adhesion of the insulating material packing 6 expanded between the inner and outer shell to the inner shell 4 and prevents cracks from forming between the latter and the shell due to aging and shrinkage of the packing 6, with possibly non-airtight points at seams between inner and outer shell and outer shell or between individual elements of the outer shell 5 communicate and so the gas exchange between the
  • Isolation material package 6 and the atmospheric air on a large surface could facilitate.
  • the thickness of the diffusion barrier layer 8 is exaggerated in FIG. 2; in practice it is sufficient for the diffusion barrier layer 8, a material with lower
  • Permeability such as PVdC or EVOH is used, a thickness of the barrier layer 8 of only 3 to 10% of the total thickness of the shell 4, the gas diffusion between the insulating material package 6 and the inner space 3 against a shell without
  • Barrier layer by one to two orders of magnitude, depending on the type of gas considered to reduce.
  • Fig. 3 shows an alternative layer structure of the inner shell 4. In this
  • Embodiment is the second carrier layer 9, between the diffusion barrier layer 8 and the insulating material 6, pore-free, while the first carrier layer 7, between the barrier layer 8 and the interior 3, partially foamed.
  • a partial foaming in which the interior 12 facing side 12 of the layer 7, is substantially free of pores and pores are substantially in the barrier layer 8 facing side 13 can be obtained, in which the carrier layer 7 during foaming a temperature gradient is exposed.
  • the non-porous part 12 gives the carrier layer 7 a solid surface whose appearance does not differ from that of a conventional single-layered inner container. Due to their small thickness and the elasticity of the underlying porous sub-layer 13, the Non-porous part layer 12 give even when striking a sharp object, without tearing or damage in any other way.
  • the non-porous second carrier layer 9 can here, for example, face its insulating material package 6 roughened by embossing.
  • one of the separating layers 7, 9 shown in FIGS. 2, 3 can be omitted and the other can be reinforced in order to prevent the production costs
  • Shell 4 to give the required mechanical strength.
  • the first carrier layer 1 can be thermoformed using simple, proven techniques, and then the diffusion layer 8 can be laminated onto the carrier layer 7 thus formed.
  • the outer shell 5 can basically have the same layer structure as the inner shell 4 described above. Different layer structures of the inner and outer shell can be combined in one housing; From a logistical and manufacturing point of view, it is preferred if both shells 4, 5 have the same layer structure.

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)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne une cuve destinée à un appareil frigorifique, comprenant une enveloppe extérieure (5), une enveloppe intérieure (4) qui délimite un espace intérieur (3), et une garniture de matière isolante (6) qui remplit l'interstice formé entre l'enveloppe intérieure et l'enveloppe extérieure (4; 5). Au moins l'une des enveloppes (4; 5) présente une structure multicouche comprenant au moins une couche support (7; 9) faite d'une première matière plastique et une couche barrière (8) étanche à la diffusion, faite d'une seconde matière plastique.
EP11748366.9A 2010-09-07 2011-08-23 Cuve pour appareil frigorifique Withdrawn EP2614323A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010040362 DE102010040362A1 (de) 2010-09-07 2010-09-07 Gehäuse für ein Kältegerät
PCT/EP2011/064439 WO2012031885A2 (fr) 2010-09-07 2011-08-23 Cuve pour appareil frigorifique

Publications (1)

Publication Number Publication Date
EP2614323A2 true EP2614323A2 (fr) 2013-07-17

Family

ID=44509354

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11748366.9A Withdrawn EP2614323A2 (fr) 2010-09-07 2011-08-23 Cuve pour appareil frigorifique

Country Status (3)

Country Link
EP (1) EP2614323A2 (fr)
DE (1) DE102010040362A1 (fr)
WO (1) WO2012031885A2 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN114076466A (zh) * 2020-08-18 2022-02-22 青岛海尔电冰箱有限公司 蒸发器设置于箱体底部的风冷冰箱

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US9221210B2 (en) 2012-04-11 2015-12-29 Whirlpool Corporation Method to create vacuum insulated cabinets for refrigerators
US9140481B2 (en) 2012-04-02 2015-09-22 Whirlpool Corporation Folded vacuum insulated structure
DE102012223539A1 (de) 2012-12-18 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Tür für ein Haushaltskältegerät mit einem Vakuumisolationselement mit umgossenen Schalen sowie Haushaltskältegerät
DE102012223547A1 (de) 2012-12-18 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Vakuumisolationselement für ein Haushaltskältegerät mit einem bereichsweise in einem Stützkörper angeordneten Funktionsbauteil sowie Haushaltskältegerät mit einem Vakuumisolationselement
DE102012223536A1 (de) 2012-12-18 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Trägerrahmen für einen Isolationskörper mit einer Dichtung an der Innenwand sowie Haushaltskältegerät
DE102012223546A1 (de) 2012-12-18 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Tür für ein Haushaltskältegerät mit einer Vertiefung an einer Außenseite eines Vakuumisolationselements sowie Haushaltskältegerät mit einer derartigen Tür
DE102012223538A1 (de) 2012-12-18 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Wandung für ein Haushaltskältegerät mit einem einstückigen Trägerrahmen für einen Isolationskörper sowie Haushaltskältegerät
DE102012223535A1 (de) * 2012-12-18 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Wandung für ein Haushaltskältegerät mit einer Hochglanz-Polystyrol und/oder Silberteilchen aufweisenden Abschlussschicht sowie Haushaltskältegerät mit einer derartigen Wandung
DE102012223544A1 (de) 2012-12-18 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Wandungsanordnung für ein Haushaltskältegerät sowie Haushaltskältegerät
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
DE102013214898A1 (de) 2013-07-30 2015-02-05 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Herstellen einer Wandung mit einem Wandteil, Wandung sowie Haushaltskältegerät
US10052819B2 (en) 2014-02-24 2018-08-21 Whirlpool Corporation Vacuum packaged 3D vacuum insulated door structure and method therefor using a tooling fixture
US9689604B2 (en) 2014-02-24 2017-06-27 Whirlpool Corporation Multi-section core vacuum insulation panels with hybrid barrier film envelope
DE102014210473A1 (de) 2014-06-03 2015-12-03 BSH Hausgeräte GmbH Tür für ein Haushaltskältegerät mit einem Vakuumisolationselement sowie Haushaltskältegerät
US9476633B2 (en) 2015-03-02 2016-10-25 Whirlpool Corporation 3D vacuum panel and a folding approach to create the 3D vacuum panel from a 2D vacuum panel of non-uniform thickness
US10161669B2 (en) 2015-03-05 2018-12-25 Whirlpool Corporation Attachment arrangement for vacuum insulated door
US9897370B2 (en) 2015-03-11 2018-02-20 Whirlpool Corporation Self-contained pantry box system for insertion into an appliance
US9441779B1 (en) 2015-07-01 2016-09-13 Whirlpool Corporation Split hybrid insulation structure for an appliance
US10222116B2 (en) 2015-12-08 2019-03-05 Whirlpool Corporation Method and apparatus for forming a vacuum insulated structure for an appliance having a pressing mechanism incorporated within an insulation delivery system
US10429125B2 (en) 2015-12-08 2019-10-01 Whirlpool Corporation Insulation structure for an appliance having a uniformly mixed multi-component insulation material, and a method for even distribution of material combinations therein
US10041724B2 (en) 2015-12-08 2018-08-07 Whirlpool Corporation Methods for dispensing and compacting insulation materials into a vacuum sealed structure
US11052579B2 (en) 2015-12-08 2021-07-06 Whirlpool Corporation Method for preparing a densified insulation material for use in appliance insulated structure
US10422573B2 (en) 2015-12-08 2019-09-24 Whirlpool Corporation Insulation structure for an appliance having a uniformly mixed multi-component insulation material, and a method for even distribution of material combinations therein
US10422569B2 (en) 2015-12-21 2019-09-24 Whirlpool Corporation Vacuum insulated door construction
US9840042B2 (en) 2015-12-22 2017-12-12 Whirlpool Corporation Adhesively secured vacuum insulated panels for refrigerators
US9752818B2 (en) 2015-12-22 2017-09-05 Whirlpool Corporation Umbilical for pass through in vacuum insulated refrigerator structures
US10018406B2 (en) 2015-12-28 2018-07-10 Whirlpool Corporation Multi-layer gas barrier materials for vacuum insulated structure
US10610985B2 (en) 2015-12-28 2020-04-07 Whirlpool Corporation Multilayer barrier materials with PVD or plasma coating for vacuum insulated structure
US10807298B2 (en) 2015-12-29 2020-10-20 Whirlpool Corporation Molded gas barrier parts for vacuum insulated structure
US10030905B2 (en) 2015-12-29 2018-07-24 Whirlpool Corporation Method of fabricating a vacuum insulated appliance structure
US11247369B2 (en) 2015-12-30 2022-02-15 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
US11009284B2 (en) 2016-04-15 2021-05-18 Whirlpool Corporation Vacuum insulated refrigerator structure with three dimensional characteristics
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CN114076466A (zh) * 2020-08-18 2022-02-22 青岛海尔电冰箱有限公司 蒸发器设置于箱体底部的风冷冰箱
CN114076466B (zh) * 2020-08-18 2023-01-20 青岛海尔电冰箱有限公司 蒸发器设置于箱体底部的风冷冰箱

Also Published As

Publication number Publication date
DE102010040362A1 (de) 2012-03-08
WO2012031885A3 (fr) 2013-01-17
WO2012031885A2 (fr) 2012-03-15

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