WO1996038697A1 - Wärmeisolierendes gehäuse - Google Patents
Wärmeisolierendes gehäuse Download PDFInfo
- Publication number
- WO1996038697A1 WO1996038697A1 PCT/EP1996/001910 EP9601910W WO9638697A1 WO 1996038697 A1 WO1996038697 A1 WO 1996038697A1 EP 9601910 W EP9601910 W EP 9601910W WO 9638697 A1 WO9638697 A1 WO 9638697A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat
- housing
- walls
- insulating housing
- boundary walls
- Prior art date
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
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/34—Elements and arrangements for heat storage or insulation
-
- 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
-
- 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 heat-insulating housing with at least one housing usable space, which is enclosed by housing walls and at least one door.
- Thermal insulation is implemented in various ways according to the known prior art.
- various insulating materials are used to insulate their utility rooms.
- the outer surface of the cooker sleeve bordering the baking chamber is provided with fiber insulation materials used for heat insulation
- rigid foams are used in refrigeration appliances for their thermal insulation, which are introduced as liquid starting components between a metal outer housing and a plastic inner lining and after expiration of a chemical reaction.
- vacuum insulation panels are used instead of the rigid foam insulation, which are placed in the space between the metal outer casing and the plastic inner lining.
- the object of the invention is to propose measures for a housing according to the preamble of claim 1, on the basis of which the disadvantages of the prior art are avoided in a simple manner and which at the same time easily open up the possibility of significantly improving the thermal insulation effect of the housing .
- housing walls are formed from two boundary walls arranged at a distance from one another, which together essentially enclose an intermediate space which can be introduced with a loosely insertable, chemically finished and evacuable end state Thermal insulation material is filled.
- the solution according to the invention provides a heat-insulating housing which, in the case of recycling, can be dismantled into largely pure material components with little technical effort and thus inexpensively, which in turn can thus be used as technically high-quality materials. Furthermore, the housing structure according to the invention achieves an insulation process which is favorable in terms of production and in the course of which cost-intensive devices for protecting the environment and the health of the production staff are unnecessary ⁇ insulation have been used in refrigeration equipment, are dispensed with. Furthermore, an influence on electrical device functions by an undesired prevention of electrical contact paths due to isolating individual fibers of fiber insulating materials is essentially excluded.
- the boundary walls are designed to be largely dimensionally rigid and the thermal insulation material introduced into the space enclosed by them is designed to be open-celled and largely pressure-resistant.
- the heat insulating material filled into the intermediate space can be compressed to improve the heat insulating properties of the housing walls, without the boundary walls additionally having to be supported by a support form.
- the open-cell heat insulation material not only enables a substantially simplified, but also a significantly lower pressure drop in the intermediate space compared to the ambient pressure of the housing walls, and at the same time due to the dimensionally rigid boundary walls and the pressure-resistant insulating material, even after the intermediate space has been evacuated essentially flat surfaces are produced, which can also serve as visible surfaces for the housing walls without further measures.
- the air pressure is reduced compared to the ambient pressure of the housing, the boundary walls surrounding the space being formed from an at least approximately diffusion-resistant material corresponding to the pressure difference.
- the air pressure in the space filled with the open-cell, pressure-resistant heat insulating material is between 0.01 mbar and 100 mbar, but is preferably below 1 mbar.
- a particularly effective heat insulation for the housing walls and a particularly effective support in the event of an evacuation of the intermediate space is achieved for the boundary walls if, according to a further advantageous embodiment of the subject matter of the invention, it is provided that the pressure-resistant, open-cell heat insulation material is essentially over the entire area of the housing is arranged.
- the open-cell, pressure-resistant heat insulation material consists of aerogels with a density of 80 to 300 kg / m 3 which are continuously compressed during the filling process of the intermediate space, but preferably the density in the range from 80 to 120 kg / m3.
- the pressure-resistant, open-cell heat insulation material is formed from plate bodies with joining aids arranged at their connecting points.
- Such a type of insulating material which can be introduced loosely into the intermediate space ensures, even in the case of flexible boundary walls, that in the case of evacuation of the intermediate space, flat surfaces and thus also perfect visible surfaces for the housing walls are formed.
- the plate bodies are made from hardened polyurethane foam.
- Boundary walls have proven to be particularly dimensionally stable and resistant to diffusion and thus particularly favorable with regard to maintaining negative pressure in the intermediate space over long periods of time if, according to a further advantageous embodiment of the object of the invention, it is provided that the boundary walls of the housing walls are formed from deep-drawn stainless steel.
- the boundary walls of the housing walls are formed from corrosion-protected steel sheet.
- the boundary walls of the housing walls are formed from diffusion-resistant plastic.
- Boundary walls of this type for use in housing walls are characterized not only by their problem-free and therefore inexpensive workability, but also by their low weight and the associated inexpensive handling in series production.
- the boundary walls of the housing walls correspond in terms of their dimensions to the dimensions of the individual wall sections of the housing and can be connected to one another to form the housing.
- the modular construction technology for a housing enables good combination possibilities of the housing walls with one another even with a relatively small number of individual housing walls equipped with different dimensions and thus a relatively large variety of housings of different dimensions with little storage effort. Furthermore, the modular construction of the housing not only enables significantly less work for the Filling the space with thermal insulation material, but also a significantly reduced evacuation time for this.
- the boundary walls of the housing walls are formed from a dimensionally stable, angled board which connects all the housing walls with one another in accordance with the individual housing walls of the housing.
- a housing structure of this type is distinguished by largely uniform thermal insulation over all of its wall sections, which is not sensitive to thermal bridges which may occur between the individual wall sections due to the design.
- boundary walls are particularly expedient if, according to a further advantageous embodiment of the subject of the invention, it is provided that one of the boundary walls is provided with a connection for lowering the air pressure within the space enclosed by the two boundary walls.
- a household stove with a stove muffle in which the stove muffle is formed from a heat-insulating housing according to one of claims 1 to 7 and 11 to 18, is particularly economical to operate and can be disposed of easily in the event of recycling.
- a household refrigeration device such as a refrigerator or freezer, with at least one cold space arranged inside its housing and closable in a door, is just as energetically particularly economical to operate and can be disposed of in a simple manner when the housing of this household refrigeration device Designed according to one of claims 1 to 18, the door is designed as an insulation body according to one of claims 1 to 15 and 17 or 18.
- the invention is explained in the following description using the example of two refrigeration devices shown in simplified form in the accompanying drawing. It shows:
- FIG. 1 in a first exemplary embodiment in a simplified schematic representation, a housing of a domestic refrigeration appliance with delimiting walls arranged one behind the other and connected at their free ends to a connecting frame,
- FIG. 2 shows an enlarged section of the heat-insulating housing with empty tubes arranged therein for receiving supply and control lines for the operation of the device assembly
- FIG. 3 shows a simplified representation in vertical section of the connecting frame with different cross sections
- FIG. 4 shows, in a second exemplary embodiment, a domestic refrigeration appliance with a heat-insulating housing composed of individual housing wall sections with a door arranged thereon in a vertical section.
- the housing walls 11 are formed from two one-piece boards arranged at a distance from one another and serving as boundary walls 12, which are angled according to the dimensions of the housing walls 11 and which are made of stainless steel sheet, corrosion-protected steel sheet, each with, for example, 0.5 mm wall thickness or a vacuum-tight plastic are produced in the deep-drawing process.
- the intermediate space 14 is filled with an open-cell, in its chemical end state and pressure-resistant heat insulation material 16, which in the present exemplary embodiment consists of hardened polyurethane foam or polyisocyanurate foam formed into sheet bodies, poly-styrofoam or other open-cell polymer foam, the thickness of which consists of the distance between the boundary walls 12 corresponds and the plate dimensions are adapted to the dimensions of the housing walls 11.
- the plate bodies made of, for example, polyurethane foam and serving as heat insulation material 16 are connected at their joints to avoid thermal bridges via a tongue and groove connection 17 (see also FIG. 2), wherein other common connection techniques would also be conceivable for connecting the individual plate bodies .
- the heat insulation plate bodies 16 are provided with cutouts for receiving empty tubes 18 (see in particular FIG. 2), which can be made of poorly heat-conducting material such as plastic and which have fastening elements 19 arranged vacuum-tight on the boundary walls 12 within of the heat insulation material 16 are fixed and supplied to the outer sides of the boundary walls 12.
- the empty pipes 18 serve to receive control and supply lines, not shown, which are to be provided for the operation of a refrigeration machine, not shown, which is used to generate cold within a usable space 20 used as a refrigerator or freezer.
- This is enclosed by the heat-insulating housing 10 and a heat-insulating door 22 which is attached to its opening side and abuts via a magnetic seal 21 at the opening edge of the housing 10.
- the door 22 is manufactured by two spaced-apart, dimensionally stable and, for example, stainless steel sheets or corrosion-protected steel sheets, each with a material thickness of, for example, 0.5 mm or made of a diffusion-resistant plastic.
- the spaced-apart boundary walls 23 on the door 22 also create an intermediate space 24 here, which is located on the free end faces of the Boundary walls 23 with a connecting frame 25 (see FIG. 3) are sealed in a vacuum-tight manner and which is filled with heat insulation material 26 over the height and width of the door 22.
- this is introduced into the intermediate space 24 before the connecting frame 25 is attached and, in the present exemplary embodiment, like the one used in the housing walls 11 as an open-cell plate body in its chemical final state, is made, for example, of largely pressure-resistant Polyurethane foam formed.
- the plate body is matched to the distance between the two boundary walls 23 and, in the case of the door 22, is arranged in one piece over its surface.
- the vacuum-tight spaces 14 and 24 produced by their boundary walls 12 and 23 together with the connecting frames 15 and 25 are evacuated to a pressure which is generally below 1 mbar.
- a pressure which is generally below 1 mbar.
- at least one evacuation connection piece is provided for connection to an evacuation pump (not shown), the one on the housing 10 provided connection piece 13 is visible, while the connection piece arranged on the door 22 is not shown.
- the pressure acting on the boundary walls 12 and 23 due to the evacuated spaces 14 and 24 is essentially absorbed by their dimensionally stable construction but also by the largely pressure-resistant plate body made of polyurethane foam.
- the heat insulation material 16 for example made of plate-like polyurethane foam
- aerogels with a density of 80 to 120 kg / m 3 and, for example, with a surface area of about 7 can also be used.
- 105 m2 / kg are used to fill the intermediate spaces 14 and 24, this heat insulation material (16) being constantly compressed and pressed during the filling process to improve the heat insulation behavior.
- the connecting frames 15 and 25 can, as shown in FIG. 3, be of different profiles, the pure rectangular cross section representing the least heat conduction path, while the other cross-sectional shapes bring about a significant increase in the heat conduction path.
- housing 10 As an alternative to the housing structure shown in FIG. 1, it would also be conceivable to produce the housing 10 according to the principle of a "folding box" or from a one-piece, four-sided hollow body with a rear wall attached. "Housings constructed in this way are suitable, for example, for use in a back ⁇ mufflers bordering the room or for the construction of climatic chambers.
- a heat-insulating housing 30 is shown which is suitable for use in a household refrigerator or freezer and which, in contrast to the housing 10 shown in FIG. 1, according to which its boundary walls 12 are formed from a one-piece circuit board deformed in accordance with the housing walls 11, is made of individual housing walls 31. These have dimensionally stable boundary walls 32 and are provided at their connecting points with one another with joining aids 33 (see in particular FIG. 5) for extending the heat conduction path at the joints.
- the largely dimensionally rigid boundary walls 32 enclose a vacuum-tight intermediate space 34 which can be evacuated via a connection piece (not shown) for a vacuum pump and which is filled with heat insulation material 35 in the manner described in accordance with the first exemplary embodiment under FIG. 1.
- empty pipes 36 for accommodating control and / or supply lines (not shown), which are used to operate a refrigeration machine, can be introduced into the heat insulation material 35 are necessary.
- the door 37 lies in a known manner via a magnetic seal 39. sealingly on the opening edge of the housing 30.
- the modular housing structure is particularly suitable for use in cold rooms.
- thermal conductivities of 2 mW / mK to 15 mW / wK result, which results in a reduction in energy consumption of at least 70% in comparison with the insulation thicknesses currently used for refrigeration appliances.
- a significant increase in the usable space in the housing e.g. for a household appliance.
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Refrigerator Housings (AREA)
- Thermal Insulation (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Control Of Combustion (AREA)
- Packages (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Table Devices Or Equipment (AREA)
- Thermally Insulated Containers For Foods (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9608692A BR9608692A (pt) | 1995-05-31 | 1996-05-07 | Câmara de isolamento ao calor |
EP96919703A EP0824660B1 (de) | 1995-05-31 | 1996-05-07 | Wärmeisolierendes gehäuse |
AT96919703T ATE191557T1 (de) | 1995-05-31 | 1996-05-07 | Wärmeisolierendes gehäuse |
DE59604893T DE59604893D1 (de) | 1995-05-31 | 1996-05-07 | Wärmeisolierendes gehäuse |
US08/982,278 US6224179B1 (en) | 1995-05-31 | 1997-12-01 | Heat-insulating housing as well as a household oven and a household refrigerator having the housing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19520020A DE19520020A1 (de) | 1995-05-31 | 1995-05-31 | Wärmeisolierendes Gehäuse |
DE19520020.9 | 1995-05-31 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/982,278 Continuation US6224179B1 (en) | 1995-05-31 | 1997-12-01 | Heat-insulating housing as well as a household oven and a household refrigerator having the housing |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996038697A1 true WO1996038697A1 (de) | 1996-12-05 |
Family
ID=7763365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1996/001910 WO1996038697A1 (de) | 1995-05-31 | 1996-05-07 | Wärmeisolierendes gehäuse |
Country Status (10)
Country | Link |
---|---|
US (1) | US6224179B1 (de) |
EP (1) | EP0824660B1 (de) |
CN (1) | CN1100976C (de) |
AT (1) | ATE191557T1 (de) |
BR (1) | BR9608692A (de) |
DE (2) | DE19520020A1 (de) |
ES (1) | ES2146003T3 (de) |
IN (1) | IN188487B (de) |
TR (1) | TR199701466T1 (de) |
WO (1) | WO1996038697A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998039156A1 (de) * | 1997-03-04 | 1998-09-11 | Bayer Aktiengesellschaft | Für den kühlmöbelbau geeignete formelemente sowie ein verfahren zu deren herstellung |
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KR20210007067A (ko) * | 2019-07-09 | 2021-01-20 | 엘지전자 주식회사 | 진공단열체, 냉장고, 및 냉장고의 제작방법 |
DE102019216094A1 (de) * | 2019-10-18 | 2021-04-22 | BSH Hausgeräte GmbH | Haushaltskältegerätevorrichtung |
US11175089B2 (en) * | 2019-12-18 | 2021-11-16 | Whirlpool Corporation | Flexible passthrough insulation for VIS |
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DE1911903A1 (de) * | 1969-03-08 | 1970-09-24 | Schubert Maschf Geb | Kuehlmoebel aus vorgefertigten Elementen aus Hartschaumstoff |
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- 1996-05-07 BR BR9608692A patent/BR9608692A/pt not_active IP Right Cessation
- 1996-05-07 CN CN96195666A patent/CN1100976C/zh not_active Expired - Fee Related
- 1996-05-07 ES ES96919703T patent/ES2146003T3/es not_active Expired - Lifetime
- 1996-05-07 TR TR97/01466T patent/TR199701466T1/xx unknown
- 1996-05-07 WO PCT/EP1996/001910 patent/WO1996038697A1/de active IP Right Grant
- 1996-05-07 DE DE59604893T patent/DE59604893D1/de not_active Expired - Lifetime
- 1996-05-07 EP EP96919703A patent/EP0824660B1/de not_active Expired - Lifetime
- 1996-05-27 IN IN956CA1996 patent/IN188487B/en unknown
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1997
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DE653374C (de) * | 1931-03-03 | 1937-11-22 | Termisk Isolation Ab | Aus Metall bestehendes, hermetisch geschlossenes Isolationselement fuer Waerme- oder Kaelteschutz |
US2729863A (en) * | 1952-12-11 | 1956-01-10 | Gen Electric | Insulated cabinet |
US2795020A (en) * | 1952-12-30 | 1957-06-11 | Gen Electric | Methods of making insulated cabinets |
US3156975A (en) * | 1959-02-16 | 1964-11-17 | Evacuated Insulation Res Ltd | Method of making heat insulating panels |
DE1911903A1 (de) * | 1969-03-08 | 1970-09-24 | Schubert Maschf Geb | Kuehlmoebel aus vorgefertigten Elementen aus Hartschaumstoff |
US4745015A (en) * | 1981-09-30 | 1988-05-17 | The Dow Chemical Company | Thermal insulating panel |
DE3235708A1 (de) * | 1982-09-27 | 1984-03-29 | Brown, Boveri & Cie Ag, 6800 Mannheim | Thermische isolierung |
US4668555A (en) * | 1984-12-27 | 1987-05-26 | Matsushita Refrigeration Co. | Heat insulating body |
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Also Published As
Publication number | Publication date |
---|---|
CN1100976C (zh) | 2003-02-05 |
EP0824660B1 (de) | 2000-04-05 |
DE19520020A1 (de) | 1996-12-05 |
CN1191599A (zh) | 1998-08-26 |
BR9608692A (pt) | 1999-07-06 |
ES2146003T3 (es) | 2000-07-16 |
US6224179B1 (en) | 2001-05-01 |
IN188487B (de) | 2002-10-05 |
ATE191557T1 (de) | 2000-04-15 |
DE59604893D1 (de) | 2000-05-11 |
EP0824660A1 (de) | 1998-02-25 |
TR199701466T1 (xx) | 1998-04-21 |
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