EP2614322A2 - Corps moulé thermiquement isolant et procédé pour le réaliser - Google Patents

Corps moulé thermiquement isolant et procédé pour le réaliser

Info

Publication number
EP2614322A2
EP2614322A2 EP11746239.0A EP11746239A EP2614322A2 EP 2614322 A2 EP2614322 A2 EP 2614322A2 EP 11746239 A EP11746239 A EP 11746239A EP 2614322 A2 EP2614322 A2 EP 2614322A2
Authority
EP
European Patent Office
Prior art keywords
mold
heat
porous material
insulating
molded body
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Withdrawn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
EP11746239.0A
Other languages
German (de)
English (en)
Inventor
Frank Bailly
Dasaradh Kumar Patchala
Jörg STELZER
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 EP2614322A2 publication Critical patent/EP2614322A2/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Withdrawn legal-status Critical Current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
    • F25D23/062—Walls defining a cabinet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • 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
    • F25D2201/122—Insulation with respect to heat using an insulating packing material of loose fill 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
    • F25D2201/14—Insulation with respect to heat using subatmospheric pressure

Definitions

  • the present invention relates to a heat-insulating molded body, in particular for use in the construction of household refrigerators, and a method for the same
  • Vacuum insulation panels have long been known as elements for the production of refrigeration equipment housings. They are generally made up of a high grade
  • diffusion-tight plastic film and a porous filler for example of zeolite, which is airtight coated by the film to a negative pressure in the pores of the
  • vacuum insulation panels are generally plate-shaped, so that each panel at most a single wall of a
  • Refrigeration device housing can form and several panels must be joined together to form a complete housing. Such a process is considerably more laborious than the foaming described above. A refrigerator manufactured in this way would therefore be considerably more expensive than a conventional foam-filled, and would have no chance in the market despite the superior thermal properties of the vacuum insulation panels.
  • a hollow-walled housing assembled in a conventional manner from inner and outer skin elements or otherwise prefabricated
  • the object of the invention is therefore to provide a simple, inexpensive and flexible method for manufacturing a thermally insulating molding or a
  • the task is solved on the one hand by a manufacturing method with the steps:
  • a protective layer can be inserted into the hollow mold in order to prevent the hollow mold itself from being damaged and, in particular, from leaking due to a pressure acting on the solidification of the material in the hollow mold.
  • a protective layer is in particular a gas-permeable mat of a fibrous material into consideration, on the one hand is able to the porous material of the Keep hollow mold away, on the other hand, but at least not impaired evacuation of the mold, preferably even supported.
  • the solidification may in particular comprise pressing the pourable porous material. Alternatively or cumulatively to the above, the solidification may also include activating a binder.
  • the pourable porous material and the binder are filled in a suspended or dissolved in a liquid form and to activate the binder, the liquid is eliminated. It may be sufficient to activate the binder, if this precipitates on evaporation of the liquid to the grains of the pourable porous material.
  • the mold can be provided in a simple and economical manner by deep drawing.
  • the object is further achieved by a heat-insulating molded body having a hollow shape and a core of porous material solidified in the hollow mold.
  • heat-insulating molding preferably at least two substantially rectangular plates arranged to each other. Particularly preferably, the
  • heat-insulating moldings a complete heat-insulating body of a
  • the hollow mold preferably has a flange surrounding a filling environment. This is on the one hand useful to provide the hollow body by deep drawing, on the other hand, it can also be used after evacuation to seal a sealing film and thus to close the hollow body airtight.
  • the mold should be undercut to allow for secure filling without the formation of insufficiently filled areas which, when evacuated, would collapse under the externally applied air pressure.
  • the sealing film may in particular form an outer side of a rear wall of the body of the finished refrigeration device.
  • Figure 1 is a perspective view of a mold for use in the manufacture of the molding according to the invention.
  • FIG. 2 shows a section through the hollow mold of FIG. 1 during a first step of the production method according to the invention
  • Fig. 3 is a section analogous to FIG. 2, a second step of
  • FIG. 4 is an analogous to FIG. 2 section showing a third step of
  • FIG. 6 shows a section analogous to FIG. 5 in a subsequent production step.
  • Fig. 1 shows a mold for the manufacture of a refrigerator body according to the present invention.
  • the mold 1 is deep-drawn from a plastic plate, similar to the inner containers of conventional refrigerators. This includes the mold 1, an inner rear wall plate 2, a (in the perspective of FIG. 1 down
  • Insulation material are filled to form a heat-insulating housing. This is done as shown in Figures 2 to 4.
  • a pourable, granular or powdery highly porous filling material 10 is filled into the mold 1. It fills the narrow, due to the production of the mold 1 by deep drawing slightly upward widening gaps 12 between the inner and outer plates 4, 7, 5, 8 and 6, 9 substantially completely.
  • the filled material 10 is compressed with a retracting from above into the mold 1 piston 11, as shown in Fig. 3.
  • the piston 11 may, as shown in FIG. 3, be flat to compress the filler 10 after complete filling of the mold 1 on the entire open rear side.
  • the spaces between the inner and outer plates 4, 7; 5, 7 and 6, 9 to fill only gradually and after each filling step first introduce a piston, not shown, which is shaped to engage in the interstices 12, and to use the piston 1 1 only when the gaps 12 completely filled in this way and are compacted and essentially only has to be filled over the inner rear wall panel 2.
  • the mold 1 After - in one or more filling and compression steps - the mold 1 is completely filled and the filled material 10 is compressed in the mold 1 to a solid core, the mold 1 is placed as shown in Figure 4 in a vacuum chamber 13, and this is evacuated, whereby the air escapes from the pores of the filling material 10. If a desired negative pressure is achieved in this way, a cover 14 is placed over the open back of the mold 1 and glued or welded to a surrounding the open back surrounding flange 15 airtight.
  • the flange 15 corresponds to an edge region of the plastic plate used for the production of the mold 1, which was clamped during deep drawing.
  • filler for use in the molding according to the invention in question such as granules of an open-cell plastic rigid foam, an airgel, zeolite, silica, etc. In particular at
  • a liquid which, moreover, may be enriched with a binder.
  • a solidification of the filling material 10 is achieved in the mold, by the extent that the liquid evaporates, the
  • Binder deposits on the filler particles and they glued together.
  • a disadvantage of this process is the long process time required to remove the liquid.
  • FIGS. 5 and 6 An alternative, preferred approach is shown in FIGS. 5 and 6: the hollow mold 1, which is only partially illustrated here, is designed with a porous nonwoven 16 or fabric prior to the introduction of the filling material 10.
  • the web 16 or fabric is dense enough to prevent the subsequently filled filler material 10 from directly contacting the mold 1.
  • a protruding edge region 17 of the fleece 16 also keeps the circumferential flange 15 of the hollow mold substantially free of particles of the filling material 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Refrigerator Housings (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Thermal Insulation (AREA)

Abstract

La présente invention concerne un procédé pour réaliser un corps moulé thermiquement isolant, le procédé consistant à : a) fournir un moule creux (1); b) remplir le moule creux (1) d'un matière poreuse (10) pouvant être déversée; c) faire se solidifier dans le moule creux (1) la matière poreuse (10) pouvant se déverser; d) faire le vide et refermer le moule creux (1).
EP11746239.0A 2010-09-07 2011-08-19 Corps moulé thermiquement isolant et procédé pour le réaliser Withdrawn EP2614322A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010040346A DE102010040346A1 (de) 2010-09-07 2010-09-07 Wärmeisolierender Formkörper und Verfahren zu dessen Fertigung
PCT/EP2011/064278 WO2012031872A2 (fr) 2010-09-07 2011-08-19 Corps moulé thermiquement isolant et procédé pour le réaliser

Publications (1)

Publication Number Publication Date
EP2614322A2 true EP2614322A2 (fr) 2013-07-17

Family

ID=44582969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11746239.0A Withdrawn EP2614322A2 (fr) 2010-09-07 2011-08-19 Corps moulé thermiquement isolant et procédé pour le réaliser

Country Status (4)

Country Link
EP (1) EP2614322A2 (fr)
CN (1) CN103261822A (fr)
DE (1) DE102010040346A1 (fr)
WO (1) WO2012031872A2 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013016705A1 (de) * 2013-10-09 2015-04-09 Stiebel Eltron Gmbh & Co. Kg Verfahren zur Dämmung eines Warmwasserspeichers und Warmwasserspeicher
DE102015008124A1 (de) * 2014-11-27 2016-06-02 Liebherr-Hausgeräte Lienz Gmbh Vakuumdämmkörper
DE102015008157A1 (de) * 2014-11-27 2016-06-02 Liebherr-Hausgeräte Lienz Gmbh Vakuumdämmkörper
US20170159998A1 (en) * 2015-12-08 2017-06-08 Whirlpool Corporation Insulation compaction device and method for forming an insulated structure for an appliance
US10041724B2 (en) * 2015-12-08 2018-08-07 Whirlpool Corporation Methods for dispensing and compacting insulation materials into a vacuum sealed structure
ES2927702T3 (es) 2015-12-10 2022-11-10 Evonik Operations Gmbh Procedimiento para el aislamiento térmico de un recipiente evacuable
US11247369B2 (en) 2015-12-30 2022-02-15 Whirlpool Corporation Method of fabricating 3D vacuum insulated refrigerator structure having core material
ES2776901T3 (es) 2016-07-29 2020-08-03 Evonik Degussa Gmbh Procedimiento para la producción de un material termoaislante que contiene ácido silícico hidrófobo
DE102016012922A1 (de) * 2016-10-27 2018-05-03 Stiebel Eltron Gmbh & Co. Kg Warmwasserspeicher und Verfahren zur Dämmung eines Warmwasserspeichers
RU2759942C2 (ru) 2017-01-18 2021-11-18 Эвоник Оперейшенс ГмбХ Гранулированный теплоизоляционный материал и способ его получения
DE102017209782A1 (de) 2017-06-09 2018-12-13 Evonik Degussa Gmbh Verfahren zur Wärmedämmung eines evakuierbaren Behälters
WO2019170264A1 (fr) 2018-03-05 2019-09-12 Evonik Degussa Gmbh Procédé de production d'un matériau aérogel
EP3597615A1 (fr) 2018-07-17 2020-01-22 Evonik Operations GmbH Matériau d'oxyde mixte granulaire et composition d'isolation thermique sur sa base
EP3823939A1 (fr) 2018-07-17 2021-05-26 Evonik Operations GmbH Composition d'isolation thermique à base de granulés de silice fumée, procédés de préparation et utilisations associés
US11987528B2 (en) 2018-07-18 2024-05-21 Kingspan Insulation Limited Process for hydrophobizing shaped insulation-material bodies based on silica at ambient pressure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434225A1 (fr) * 1989-12-18 1991-06-26 Whirlpool Corporation Système d'isolation par le vide pour isoler des armoires frigorifiques

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB465602A (en) * 1934-11-10 1937-05-10 Termisk Isolation Ab Improvements in or relating to heat insulating elements
GB492666A (en) * 1936-03-25 1938-09-23 Termisk Isolation Ab Improvements in heat insulation elements
US2595262A (en) * 1949-03-26 1952-05-06 Monsanto Chemicals Method and apparatus for filling containers
SE501701C2 (sv) * 1993-09-29 1995-04-24 Electrolux Ab Sätt att fylla och packa isoleringspulver i väggarna hos en skåpkropp
WO2000040516A1 (fr) * 1999-01-05 2000-07-13 Matsushita Electric Industrial Co., Ltd. Poinçon pour le formage de dispositif optique, son procede de fabrication et dispositif optique
JP2008528319A (ja) * 2005-01-20 2008-07-31 ヨング リー 複合構造物製造方法
GB0601888D0 (en) * 2006-01-31 2006-03-08 Psi Global Ltd Molded filter
CN100516728C (zh) * 2007-08-14 2009-07-22 海信科龙电器股份有限公司 一种冰箱后板
JP2009063064A (ja) * 2007-09-06 2009-03-26 Hitachi Appliances Inc 真空断熱材及びこれを用いた冷蔵庫

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434225A1 (fr) * 1989-12-18 1991-06-26 Whirlpool Corporation Système d'isolation par le vide pour isoler des armoires frigorifiques

Also Published As

Publication number Publication date
WO2012031872A2 (fr) 2012-03-15
CN103261822A (zh) 2013-08-21
DE102010040346A1 (de) 2012-03-08
WO2012031872A3 (fr) 2012-05-10

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