EP2205918A2 - Appareil frigorifique - Google Patents

Appareil frigorifique

Info

Publication number
EP2205918A2
EP2205918A2 EP08805134A EP08805134A EP2205918A2 EP 2205918 A2 EP2205918 A2 EP 2205918A2 EP 08805134 A EP08805134 A EP 08805134A EP 08805134 A EP08805134 A EP 08805134A EP 2205918 A2 EP2205918 A2 EP 2205918A2
Authority
EP
European Patent Office
Prior art keywords
molded parts
refrigerating appliance
appliance according
less
insulating material
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
EP08805134A
Other languages
German (de)
English (en)
Inventor
Stefan Holzer
Sandro Kohn
Dasaradh Kumar Patchala
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 EP2205918A2 publication Critical patent/EP2205918A2/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
    • F25D23/062—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
    • F25D2201/14—Insulation with respect to heat using subatmospheric pressure

Definitions

  • the invention relates to a refrigerator according to the preamble of claim 1.
  • vacuum panels For different isolation purposes so-called vacuum panels have become known. These vacuum panels usually consist of an airtight outer skin the one
  • Core encloses, which consists of porous Dämmmaterial. Silica or aerogels, as well as open-cell polyurethane foams, are often used as insulation material. These panels are evacuated and sealed. The internal pressure is lowered to a value of less than 100 mbar. On the one hand, the evacuation increases the rigidity and stability of the panels and, on the other hand, it increases the insulation effect. This effect can be explained by the fact that the probability of collisions of the air present in the pores is reduced.
  • vacuum panels have a thermal conductivity in a range of 0.017 to 0.025 W / mK, depending on the core material used and the internal pressure.
  • nanofoams have become known, in particular for building insulation, whose pore size is in the nanometer range. These nanofoams are made by synthesis of plastic. They achieve a thermal conductivity in the range of 0.010 to 0.015 W / mK and are thus far below the values of vacuum panels.
  • Refrigeration equipment such as refrigerators, freezers or fridge freezers today usually consist of an inner shell, which is anchored in an outer housing, which consists of lid, bottom, side walls and rear wall. After the chiller and the electrical components are mounted, the space between the inner shell and outer housing is filled with foam. This process is relatively expensive and therefore expensive.
  • Transportable coolers in smaller size are often already made cheaper.
  • Prefabricated vacuum panels are used to build these coolers. which are assembled into a corresponding housing. To the necessary
  • the invention has for its object a refrigeration device to build so that it can be produced inexpensively and and there is a very good ratio of internal to external volume. Nevertheless, the insulation effect compared to conventional refrigerators should be improved or at least kept the same.
  • the object is achieved by a refrigerator with the features of claim 1.
  • the interior moldings are used according to the invention have a core of nanofoam.
  • the pore size of the nanofoam is less than 100 nanometers.
  • the core is surrounded by an airtight envelope.
  • the molded part is evacuated, so that the internal pressure is less than 100 mbar.
  • the moldings are designed as rectangular plates. Such plates are inexpensive to produce with high accuracy. It can be built with such plates in a simple manner a housing for a refrigerator and assemble with little effort.
  • the shape of the molding is adapted to the application. For example, depressions for holding specialist carriers can be integrated into the molded parts. It is also possible that a molding has different thickness, so that z. B. integrated in the upper part of the refrigerator, a freezer and the insulation effect can be enhanced in this area.
  • the bottom forming molding is advantageously formed step-shaped. It thus arises on the back of the refrigerator a machine room accessible from behind, in the For example, the compressor can be accommodated.
  • a similar structure can be achieved if instead of the bottom, the rear wall is formed stepwise. Also in this way can be realized with simple means of the engine room.
  • the moldings are connected to one another such that the connections have a similar thermal conductivity to the moldings themselves
  • the internal pressure is between 1 and 3 mbar.
  • the relevant for the thermal conductivity internal pressure of the molding can not be kept constant in practice. This means that, at least over several years, the original internal pressure increases due to the diffusion of water vapor and air through the envelope of the molded part. In order to keep this increase as low as possible, a metal-coated multi-layer film is used for the wrapping of the molded part.
  • the insulating material of the core advantageously has a pore size of less than 50 nanometers.
  • the nanofoam has pores in the size between 1 and 100 nanometers. With this small pore size, the probability of collisions between air molecules is reduced so much that even with an increase in internal pressure, the thermal conductivity is only slightly increased. In this way, the refrigeration unit retains an excellent insulation capacity over its entire service life.
  • Fig. 1 is a side view of a refrigerator according to the invention with broken
  • Figure 1 shows a refrigerator 1, the interior 8 of two side walls 2, a bottom 4, a lid 5 and a rear wall 3 is limited.
  • the opening on the front side is closed by the door 6.
  • the side walls 2, the bottom 4, the cover 5 and the rear wall 3 are made of molded parts, wherein the side walls 2, 5 and the back cover 3 have the shape of panels. In the bottom 4, however, a step is formed.
  • the core of the molded parts consists of a porous insulating foam, the so-called nanofoam.
  • This open-pore polyurethane foam has a pore size that is in the nanometer range, ideally at 1-10 nanometers.
  • All moldings have an air and water vapor-tight envelope. It consists of a metallized multi-layered film. The moldings are evacuated to an internal pressure of ideally 1-3 mbar. The metal-coated multi-layered film can almost completely prevent the diffusion of water vapor and air into the molded part, so that this internal pressure persists for a long time. Also, this film prevents the formation of thermal bridges at the abutting edges of molded parts placed against each other, so that even there no heat can penetrate into the insulated interior 8.
  • the moldings are factory-connected to a housing so that by the connection technology also no heat from the outside can get into the interior. This can be achieved, for example, with certain adhesives that contain no or only a few heat-conducting materials.
  • the rear wall 3 between the lid 5 and bottom 4 is inserted.
  • the side walls 2 are attached below the lid 5, but cover the bottom 4 and the rear wall 3. In this way, smooth, continuous side surfaces, to the visually only the lid 5 is adjacent.
  • the side walls 2 also form the lateral boundary surfaces for the engine room 7. Also seen from above results in a uniform, easy to maintain surface.
  • each narrow side of a molding is connected to the surface of another molding.
  • the interior 8 can still be lined with a one-piece inner shell, so that the interior has no cracks or gaps and can be cleaned well.
  • an outer shell may be provided for reasons of design or to increase the stability, so that the refrigeration device receives the appearance of a conventional refrigeration device.

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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

L'invention concerne un appareil frigorifique (1) comprenant un générateur de froid et un espace intérieur (8) isolé. Selon l'invention, l'espace intérieur (8) est isolé au moyen d'éléments moulés (2, 3, 4, 5, 6) présentant une partie centrale à base de matériau isolant poreux et d'une enveloppe hermétique. La pression intérieure des éléments moulés (2, 3, 4, 5, 6) est inférieure à 100 mbar et le matériau isolant est une nanomousse dont la taille des pores est inférieure à 100 nanomètres.
EP08805134A 2007-10-22 2008-10-08 Appareil frigorifique Ceased EP2205918A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007050403A DE102007050403A1 (de) 2007-10-22 2007-10-22 Kältegerät
PCT/EP2008/063445 WO2009053244A2 (fr) 2007-10-22 2008-10-08 Appareil frigorifique

Publications (1)

Publication Number Publication Date
EP2205918A2 true EP2205918A2 (fr) 2010-07-14

Family

ID=40458947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08805134A Ceased EP2205918A2 (fr) 2007-10-22 2008-10-08 Appareil frigorifique

Country Status (6)

Country Link
US (1) US20100275640A1 (fr)
EP (1) EP2205918A2 (fr)
CN (1) CN101836067B (fr)
DE (1) DE102007050403A1 (fr)
RU (1) RU2010116845A (fr)
WO (1) WO2009053244A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010031250A1 (de) * 2010-07-12 2012-01-12 BSH Bosch und Siemens Hausgeräte GmbH Gehäusekomponente für ein Kältegerät

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5943876A (en) * 1996-06-12 1999-08-31 Vacupanel, Inc. Insulating vacuum panel, use of such panel as insulating media and insulated containers employing such panel
US6224179B1 (en) * 1995-05-31 2001-05-01 Bsh Bosch Und Siemens Hausgeraete Gmbh Heat-insulating housing as well as a household oven and a household refrigerator having the housing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2360536A1 (fr) * 1976-08-05 1978-03-03 Air Liquide Materiau isolant a faible conductibilite thermique constitue d'une structure granulaire compactee
DE19928011A1 (de) * 1999-06-19 2000-12-21 Porextherm Daemmstoffe Gmbh Isolierplatte, insbesondere für den Niedertemperaturbereich
JP4759862B2 (ja) * 2001-07-16 2011-08-31 パナソニック株式会社 密閉型電動圧縮機
WO2007001354A2 (fr) * 2004-09-01 2007-01-04 Aspen Aerogels, Inc. Structures isolantes hermetiques a hautes performances
JP4215701B2 (ja) * 2004-10-12 2009-01-28 日立アプライアンス株式会社 冷蔵庫
US20080014435A1 (en) * 2006-02-09 2008-01-17 Nanopore, Inc. Method for the manufacture of vacuum insulation products
US20090179541A1 (en) * 2007-12-12 2009-07-16 Nanopore, Inc. Vacuum insulation panel with smooth surface method for making and applications of same
US8440732B2 (en) * 2008-03-25 2013-05-14 Sabic Innovative Plastics Ip B.V. Polymeric foams with nanocellular morphology and methods for making them

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6224179B1 (en) * 1995-05-31 2001-05-01 Bsh Bosch Und Siemens Hausgeraete Gmbh Heat-insulating housing as well as a household oven and a household refrigerator having the housing
US5943876A (en) * 1996-06-12 1999-08-31 Vacupanel, Inc. Insulating vacuum panel, use of such panel as insulating media and insulated containers employing such panel

Also Published As

Publication number Publication date
DE102007050403A1 (de) 2009-04-23
CN101836067B (zh) 2014-03-12
US20100275640A1 (en) 2010-11-04
WO2009053244A2 (fr) 2009-04-30
CN101836067A (zh) 2010-09-15
WO2009053244A3 (fr) 2009-10-29
RU2010116845A (ru) 2011-11-27

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