EP2205918A2 - Kältegerät - Google Patents
KältegerätInfo
- 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
Links
- 239000011148 porous material Substances 0.000 claims abstract description 11
- 239000008208 nanofoam Substances 0.000 claims abstract description 8
- 239000011810 insulating material Substances 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims description 19
- 239000003570 air Substances 0.000 claims 1
- 239000012080 ambient air Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 7
- 239000011162 core material Substances 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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
Description
Claims
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 (de) | 2007-10-22 | 2008-10-08 | Kältegerät |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2205918A2 true EP2205918A2 (de) | 2010-07-14 |
Family
ID=40458947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08805134A Ceased EP2205918A2 (de) | 2007-10-22 | 2008-10-08 | Kältegerät |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20100275640A1 (de) |
| EP (1) | EP2205918A2 (de) |
| CN (1) | CN101836067B (de) |
| DE (1) | DE102007050403A1 (de) |
| RU (1) | RU2010116845A (de) |
| WO (1) | WO2009053244A2 (de) |
Families Citing this family (1)
| 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)
| 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)
| 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 |
| EP1789719A2 (de) * | 2004-09-01 | 2007-05-30 | Aspen Aerogels Inc. | Vakuumversiegelte hochleistungsisolierungen |
| 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 |
-
2007
- 2007-10-22 DE DE102007050403A patent/DE102007050403A1/de not_active Withdrawn
-
2008
- 2008-10-08 US US12/738,096 patent/US20100275640A1/en not_active Abandoned
- 2008-10-08 RU RU2010116845/13A patent/RU2010116845A/ru not_active Application Discontinuation
- 2008-10-08 EP EP08805134A patent/EP2205918A2/de not_active Ceased
- 2008-10-08 WO PCT/EP2008/063445 patent/WO2009053244A2/de not_active Ceased
- 2008-10-08 CN CN200880112737.5A patent/CN101836067B/zh not_active Expired - Fee Related
Patent Citations (2)
| 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 |
|---|---|
| WO2009053244A3 (de) | 2009-10-29 |
| RU2010116845A (ru) | 2011-11-27 |
| CN101836067B (zh) | 2014-03-12 |
| CN101836067A (zh) | 2010-09-15 |
| US20100275640A1 (en) | 2010-11-04 |
| WO2009053244A2 (de) | 2009-04-30 |
| DE102007050403A1 (de) | 2009-04-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20100525 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
| DAX | Request for extension of the european patent (deleted) | ||
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BSH HAUSGERAETE GMBH |
|
| 17Q | First examination report despatched |
Effective date: 20150225 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R003 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
| 18R | Application refused |
Effective date: 20161015 |