EP2185876A2 - Refrigeration unit with vacuum insulation - Google Patents
Refrigeration unit with vacuum insulationInfo
- Publication number
- EP2185876A2 EP2185876A2 EP08774738A EP08774738A EP2185876A2 EP 2185876 A2 EP2185876 A2 EP 2185876A2 EP 08774738 A EP08774738 A EP 08774738A EP 08774738 A EP08774738 A EP 08774738A EP 2185876 A2 EP2185876 A2 EP 2185876A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- refrigerating appliance
- hollow body
- appliance according
- glass
- housing
- 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- Withdrawn
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
-
- 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 present invention relates to a refrigerator, in particular its thermal insulation.
- Refrigerators currently on the market generally have a heat-insulating housing with a solid outer and inner skin that together define a cavity.
- an insulating layer of foamed synthetic resin is produced by injecting the resin in liquid form into the cavity and allowing it to expand and set.
- a propellant gas must be available which, for example, may have been dissolved under high pressure in the liquid synthetic resin prior to injection or is released from it after injection by a chemical reaction.
- the bubbles formed in the synthetic resin inevitably contain the propellant, so that the insulating effect of the foam layer can not be better than that of the propellant gas itself.
- Object of the present invention is to provide a refrigeration device that allows to maintain an excellent insulation effect for a long time.
- the object is achieved in that in a refrigeration device with a housing surrounding a space containing a heat insulating layer containing the heat insulating layer evacuated glass hollow body.
- Methods for producing such hollow bodies are known from US Pat. No. 4,303,431 A1 or WO 1980 000438A1.
- Glass hollow bodies produced by these known methods can form a bed in the housing.
- the glass hollow bodies can also be embedded in a matrix.
- this matrix can be foamed like a conventional insulating layer of the type described above; this allows the use of the hollow glass body as an insulation-improving additive, without the need for further elaborate adjustments according to the invention to the refrigeration appliances or their production processes.
- the hollow bodies may be arranged in a regular grid.
- the thermal insulation layer comprises a monolayer or a small whole number of monolayers of the hollow bodies.
- the hollow bodies may be spherical or cylindrical. In the case of cylindrical hollow body whose longitudinal axis is preferably aligned in the thickness direction of the heat insulating layer.
- a reflective coating of the hollow body additionally reduces its heat permeability.
- Fig. 1 is a schematic view of a refrigerator according to a first
- FIGS. 2 to 4 show steps in the production of a housing element according to a second embodiment of the invention
- FIG. 5 shows a section through a housing wall according to a third embodiment of the invention.
- Fig. 1 shows in a perspective view of a refrigerator to which the present invention is applicable.
- the refrigerator has in a conventional manner a body 1 and an attached door 2, which define an interior space 3.
- Carcass 1 and door 2 are each hollow body with a one-piece plastic deep-drawn inner wall and a one-piece or assembled from a plurality of plate-shaped elements outer wall.
- a circumferential groove 4 is formed, which is provided to anchor therein in a conventional manner a magnetic seal (not shown). Two openings at the bottom of the groove 4, which are covered by the attachment of the magnetic seal of this, can be used to fill the inner cavity of the door 2 with a heat-insulating filling of evacuated glass beads.
- the glass spheres which have different diameters in the millimeter - A -
- An alternative way to isolate a refrigerator with the design shown in Fig. 1 using evacuated glass beads is to mix them with a in a conventional manner injected into the cavities of the body 1 and door 2 resin and mixed with the glass beads To inject resin, in particular polyurethane resin, in the cavities of the body 1 and door 2 and to let expand it. Thus, a foam filling is obtained in the cavities, the insulating effect is improved by the proportion of evacuated glass beads contained therein.
- the housing of the refrigerating appliance can also be composed of a plurality of plate-shaped panels, one of which forms the door, a side wall, ceiling, floor or rear wall of the body 1.
- Fig. 2 shows a plurality of such glass balls 7 distributed in a flat shell 8, whose dimensions correspond to those of the door 2 or a wall of the body 1.
- the number of glass beads 7 is dimensioned so that they lie close to each other in a closed position covering the bottom of the shell 8 and thus form an arrangement in the form of a regular grid with square cells in the case shown here.
- a thin plate or foil 9 made of synthetic resin is placed, as can be seen in Fig. 3, which shows a partial section through the shell 8, and on the resin plate 9 is another layer 10 'of glass beads. 7 applied close to each other. This process can be repeated as many times as necessary to obtain a desired layer thickness.
- the resulting stack of glass spheres 7 and resin plates 9 is heated to expand the synthetic resin plates 9 to soften and adhere to the glass beads 7, and possibly expand depending on the material used for the plates 9.
- Fig. 4 shows the state of the composite after expanding the plate 9; Gaps 11 between the glass balls 7 are essentially filled by the synthetic resin material of the plate 9, so that the glass balls 7 are firmly bound in the synthetic resin material and heat transfer by air flow in the spaces 1 1 between the glass balls 7 is largely excluded.
- the composite of Fig. 4 can be removed from the shell 8 and provided with a protective sheath, or it can be the shell 8 used as a shell of the panel.
- the glass spheres In order to provide an ideally efficient insulation, it is desirable to minimize the volume of the spaces 11 between the evacuated glass spheres 7. For this purpose, the glass spheres must be replaced by hollow bodies of another, a given hollow volume efficient filling shape.
- FIG. 12 A section through an insulation panel with such cylindrical glass hollow bodies 12 is shown in FIG.
- the hollow bodies 12 of uniform dimensions are each aligned with their longitudinal axis perpendicular to the outer and inner walls 13 and 14 of the panel and extend substantially over the entire width of the space between the walls 13, 14.
- a regular grid can be obtained, for example, by the hollow body 12 first on one or two sides, as shown in Fig. 6, attached to a synthetic resin tape 15, from the strips thus obtained are cut in a dimension of the desired panel of corresponding length and these strips are stacked as shown in the section of Fig. 7 so as to successively construct the panel.
- the hollow body 12 can be generated as the hollow balls 7 by first by blowing metal vapor into a molten glass filled with the metal vapor
- Tube is formed and the tube in the still molten state with a
- Cross-flow is blown to make him locally to contract and constricting into individual hollow body. During cooling, the beats
- Metal vapor is then deposited as a reflective layer 16 on the inner walls of the hollow body and leaves in the interior of a vacuum.
- the mirror layer 16 is an additional obstacle to the propagation of thermal radiation and thus improves the insulation capacity of the hollow body in addition.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710034298 DE102007034298A1 (en) | 2007-07-24 | 2007-07-24 | Refrigeration unit with vacuum insulation |
PCT/EP2008/058626 WO2009013106A2 (en) | 2007-07-24 | 2008-07-03 | Refrigeration unit with vacuum insulation |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2185876A2 true EP2185876A2 (en) | 2010-05-19 |
Family
ID=40157103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08774738A Withdrawn EP2185876A2 (en) | 2007-07-24 | 2008-07-03 | Refrigeration unit with vacuum insulation |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2185876A2 (en) |
CN (1) | CN101796358A (en) |
DE (1) | DE102007034298A1 (en) |
RU (1) | RU2010103937A (en) |
WO (1) | WO2009013106A2 (en) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8986483B2 (en) | 2012-04-02 | 2015-03-24 | Whirlpool Corporation | Method of making a folded vacuum insulated structure |
US9221210B2 (en) | 2012-04-11 | 2015-12-29 | Whirlpool Corporation | Method to create vacuum insulated cabinets for refrigerators |
US9689604B2 (en) | 2014-02-24 | 2017-06-27 | Whirlpool Corporation | Multi-section core vacuum insulation panels with hybrid barrier film envelope |
US10052819B2 (en) | 2014-02-24 | 2018-08-21 | Whirlpool Corporation | Vacuum packaged 3D vacuum insulated door structure and method therefor using a tooling fixture |
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 |
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 |
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 |
US20170159996A1 (en) * | 2015-12-08 | 2017-06-08 | Whirlpool Corporation | Vacuum insulation structures with a filler insulator |
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 |
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 |
US10808987B2 (en) | 2015-12-09 | 2020-10-20 | Whirlpool Corporation | Vacuum insulation structures with multiple insulators |
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 |
US10610985B2 (en) | 2015-12-28 | 2020-04-07 | Whirlpool Corporation | Multilayer barrier materials with PVD or plasma coating for vacuum insulated structure |
US10018406B2 (en) | 2015-12-28 | 2018-07-10 | Whirlpool Corporation | Multi-layer gas barrier materials 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 |
WO2017180145A1 (en) | 2016-04-15 | 2017-10-19 | Whirlpool Corporation | Vacuum insulated refrigerator structure with three dimensional characteristics |
EP3491308B1 (en) | 2016-07-26 | 2021-03-10 | Whirlpool Corporation | Vacuum insulated structure trim breaker |
WO2018034665A1 (en) | 2016-08-18 | 2018-02-22 | Whirlpool Corporation | Machine compartment for a vacuum insulated structure |
EP3548813B1 (en) | 2016-12-02 | 2023-05-31 | Whirlpool Corporation | Hinge support assembly |
US10352613B2 (en) | 2016-12-05 | 2019-07-16 | Whirlpool Corporation | Pigmented monolayer liner for appliances and methods of making the same |
EP3593072A4 (en) | 2017-03-07 | 2020-09-16 | Whirlpool Corporation | Processes for making a super-insulating core material for a vacuum insulated structure |
US10907888B2 (en) | 2018-06-25 | 2021-02-02 | Whirlpool Corporation | Hybrid pigmented hot stitched color liner system |
US10907891B2 (en) | 2019-02-18 | 2021-02-02 | Whirlpool Corporation | Trim breaker for a structural cabinet that incorporates a structural glass contact surface |
US11320194B2 (en) | 2019-04-30 | 2022-05-03 | Whirlpool Corporation | Barrier layer for insulated structures |
CN117646498A (en) * | 2023-12-28 | 2024-03-05 | 山东广泰声学新材料技术有限公司 | Energy-saving sound-insulation building material and preparation method thereof |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US948541A (en) * | 1908-03-23 | 1910-02-08 | Clyde J Coleman | Heat-insulating wall. |
DE2954563C2 (en) | 1978-08-28 | 1990-09-20 | Leonard B. Bellevue Wash. Us Torobin | |
US4303431A (en) | 1979-07-20 | 1981-12-01 | Torobin Leonard B | Method and apparatus for producing hollow microspheres |
US5171346A (en) * | 1991-01-22 | 1992-12-15 | Aktiebolaget Electrolux | Method of forming a composite thermal insulating material |
IE20070752A1 (en) * | 2006-10-17 | 2008-06-11 | Kingspan Res & Dev Ltd | An insulating medium |
-
2007
- 2007-07-24 DE DE200710034298 patent/DE102007034298A1/en not_active Withdrawn
-
2008
- 2008-07-03 WO PCT/EP2008/058626 patent/WO2009013106A2/en active Application Filing
- 2008-07-03 EP EP08774738A patent/EP2185876A2/en not_active Withdrawn
- 2008-07-03 RU RU2010103937/21A patent/RU2010103937A/en not_active Application Discontinuation
- 2008-07-03 CN CN200880100004A patent/CN101796358A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2009013106A2 * |
Also Published As
Publication number | Publication date |
---|---|
CN101796358A (en) | 2010-08-04 |
WO2009013106A3 (en) | 2009-06-18 |
RU2010103937A (en) | 2011-08-27 |
WO2009013106A2 (en) | 2009-01-29 |
DE102007034298A1 (en) | 2009-01-29 |
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Legal Events
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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 |
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17P | Request for examination filed |
Effective date: 20100224 |
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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 |
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AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KOHN, SANDRO Inventor name: PATCHALA, DASARADH KUMAR Inventor name: CALVILLO, JUAN ANTONIO Inventor name: FEINAUER, ADOLF |
|
17Q | First examination report despatched |
Effective date: 20100806 |
|
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 |
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GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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INTG | Intention to grant announced |
Effective date: 20161010 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20170221 |