JP2006170304A - Vacuum heat insulating material and heat insulating panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum heat insulating material capable of providing high heat insulating effect by generally increasing the covering ratio of core materials. <P>SOLUTION: The plurality of core materials are covered by a laminated film, and a vacuum heat insulating material 1 vacuum-sealed in independent spaces on a same plane are stacked by three or more layers so that the core parts 8 of the vacuum heat insulating materials 1 are not overlapped with each other to increase the covering ratio of the core material parts 8 so as to increase the heat insulating effect. When the core material parts 8 are formed by stacking three sheets of hexagonal vacuum heat insulating materials 1 on each other, the covering ratio can be increased to approximately 100% by the least number of vacuum heat insulating materials 1 to efficiently increase the heat insulating effect. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vacuum heat insulating material and a heat insulating panel.

  A conventional vacuum heat insulating material is a vacuum heat insulating material comprising a sealing body in a low vacuum state in which a core material is enclosed in a jacket material, and the sealing body is divided into a plurality of sealed rooms. (For example, see Patent Document 1).

  As shown in FIG. 6, such a vacuum heat insulating material is formed by covering the core material 12 with an outer covering material 13 to form a sealed body and having a large number of heat-welded portions 14, whereby the sealed body is divided into a plurality of sealed rooms. A large number of gaps 15 exist between the sealed rooms.

  Since such a vacuum heat insulating material is composed of a large number of small rooms, it can be cut between the rooms, so that the dimensions of the heat insulating material can be easily adjusted.

Also, even if the vacuum in one room leaks, the leak does not reach other places, so the durability performance is improved, and the vacuum heat insulating material can be fixed with nails or the like by a simple and inexpensive method. become able to.
JP-A-7-139690

  However, when the vacuum heat insulating material is considered as a whole, there are a large number of gaps that do not contain the core material, so the coverage of the core material is small and the heat insulating effect may not be sufficiently obtained.

  Further, even if two such vacuum heat insulating materials are stacked so that the core material portions do not overlap, there are cases where a gap portion still exists and the heat insulating effect cannot be sufficiently obtained.

  The present invention solves the above-described conventional problems, and provides a vacuum heat insulating material having a high core insulation ratio and a high heat insulating effect.

  In order to achieve the above object, the vacuum heat insulating material of the present invention is formed by covering a plurality of core materials with a laminate film and vacuum-sealing the vacuum heat insulating material in an independent space on the same plane so that the core material portions do not overlap. It is a vacuum heat insulating material characterized in that it is configured by stacking a plurality of layers or more, and among them, the best method is to stack three hexagonal vacuum heat insulating materials.

  Coverage of the vacuum insulation core material can be increased and heat insulation performance can be improved. At the same time, deterioration of heat insulation performance due to leakage from one room of the vacuum insulation material seal due to nailing etc. is minimized. To the limit. Furthermore, when the core part is hexagonal and the vacuum heat insulating material is stacked three times, the gap part is eliminated, and the coverage of the core part close to 100% can be achieved, further improving the heat insulation performance. Can be made.

  The invention described in claim 1 is a vacuum characterized in that a plurality of cores are covered with a laminate film, and three or more vacuum heat insulating materials are vacuum-sealed in an independent space on the same plane. It is a heat insulating material, it can increase the coverage of the core material part of the vacuum heat insulating material, improve the heat insulating performance, and at the same time, heat insulation due to leakage from one room of the vacuum heat insulating material sealed part by nailing etc. Performance degradation can be minimized.

  Invention of Claim 2 is the vacuum heat insulating material of Claim 1 characterized by making the magnitude | size of the said core material substantially the same, By making the magnitude | size of a core material substantially the same, The heat leak of the vacuum heat insulating material can be made uniform, and the heat insulating performance can be obtained uniformly. In addition, it is possible to suppress the work loss when punching the core material at the time of manufacturing the core material, and to reduce the cost.

  The invention according to claim 3 is the vacuum heat insulating material according to claim 1 or 2, wherein the area of the polygonal core material is 100 square centimeters or more. By keeping it above a certain level, it is possible to suppress heat leaks and improve heat insulation performance.

  The invention according to claim 4 is the vacuum heat insulating material according to any one of claims 1 to 3, wherein the shape of the polygonal core material is a hexagonal shape. If the vacuum insulation material is stacked so that the core part does not overlap with the hexagonal part, three core materials can be gathered at the corner of the core material, so by stacking three layers of vacuum insulation material It is possible to eliminate the gap portion and achieve a covering ratio of the core portion close to almost 100%. Therefore, it is possible to minimize the total number of multilayered vacuum heat insulating materials composed of small rooms, obtain the maximum heat insulating effect, and improve cost performance.

  The invention according to claim 5 is characterized in that the shape of the core member positioned at the end portion of the vacuum heat insulating material is configured such that the end portion is positioned substantially on a straight line. The vacuum heat insulating material according to any one of the above, wherein when the vacuum heat insulating material is multi-layered with a foam heat insulating material or the like, the foam heat insulating material portion where the vacuum heat insulating material is not multi-layered is minimized to insulate the entire heat insulating panel. Performance can be increased.

  The invention according to claim 6 is a heat insulating panel characterized in that the vacuum heat insulating material according to any one of claims 1 to 5 is multilayered with the foam heat insulating material, and the foam heat insulating material is vacuumed. There are no irregularities on the external surface because it is multilayered with the heat insulating material. Moreover, even if nailing is performed, the heat insulation performance is not lowered and heat leak can be suppressed. Accordingly, it is possible to obtain a high-performance heat insulation panel that has high workability and exhibits the high heat insulation performance inherent to the vacuum heat insulating material.

  The invention according to claim 7 is the heat insulating panel according to claim 6, wherein a vacuum heat insulating material is disposed substantially at the center of the cross section of the heat insulating panel. Therefore, the unevenness on the surface of the vacuum heat insulating material can be hidden by the foam heat insulating material, so that the surface property of the heat insulating panel can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a plan view of a vacuum heat insulating material according to Embodiment 1 of the present invention.

  As shown in FIG. 1, the vacuum heat insulating material 1 includes a plurality of core materials 2 and a laminate film 3 that covers the plurality of core materials 2. The plurality of core members 2 are vacuum-sealed in independent spaces on the same plane in the laminate film 3.

  FIG. 2 is a plan view of the vacuum heat insulating material 1 shown in FIG. 1 when three sheets are stacked so that the core material 2 does not overlap. In FIG. 2, 4 is a core part, and 5 is a heat welded part where a laminate film is heat welded.

  As shown in FIG. 2, by covering three vacuum heat insulating materials so that the core portions do not overlap with each other, the coverage of the core portion 4 is increased compared to the case of FIG. 1.

  Accordingly, it is possible to improve the heat insulation performance as compared with the case of FIG. 1, and at the same time, it is possible to minimize the deterioration of the heat insulation performance due to leakage from one room of the vacuum heat insulating material sealing part due to nailing or the like. .

  Moreover, since the heat leak of a vacuum heat insulating material becomes uniform by making the magnitude | sizes of a core material substantially the same, the heat insulation performance can be obtained uniformly. In addition, it is possible to suppress the work loss when punching the core material at the time of manufacturing the core material, and to reduce the cost.

  Moreover, when the area of the core material is set to 100 square centimeters or more and the area of each core material is maintained at a certain level or more, heat leakage can be suppressed and heat insulation performance can be improved.

  As the core material, open-cell bodies of polymer materials such as polystyrene and polyurethane, inorganic and organic powders, inorganic and organic fiber materials, and the like can be used.

  Among these, agglomerated silica powder, foamed perlite ground powder, diatomaceous earth powder, calcium silicate powder, calcium carbonate powder, inorganic powders such as clay and talc, and inorganic fibers such as glass wool and ceramic fibers are preferable. Is preferably 20 μm or less.

  In addition, the outer cover material, which is a laminate film, is applied to the surface protective layer, such as nylon film, polyethylene terephthalate film, polypropylene, etc., gas barrier layer, metal vapor deposition film, inorganic vapor deposition film, metal foil, etc. A low-density polyethylene film, a high-density polyethylene film, an ethylene / vinyl alcohol copolymer resin film, a polypropylene film, a polyacrylonitrile film, an unstretched polyethylene terephthalate film, or the like can be used.

(Embodiment 2)
FIG. 3 is a plan view of the vacuum heat insulating material according to the second embodiment of the present invention.

  As shown in FIG. 3, the vacuum heat insulating material 1 includes a plurality of hexagonal core materials 6 and a laminate film 7 that covers the plurality of core materials 6. The plurality of hexagonal core members 6 are vacuum-sealed in independent spaces on the same plane in the laminate film 7.

  FIG. 4 is a plan view of the vacuum heat insulating material 1 shown in FIG. 3 when three sheets are stacked so that the core portion 8 does not overlap.

  As shown in FIG. 4, three core materials can be gathered at the corner of the core material, so that the portion without the core material portion 8 can be eliminated by stacking the three layers of the vacuum heat insulating material 1, and the core is nearly 100%. The coverage of the material part can be achieved.

  Therefore, it is possible to minimize the total number of the multilayered vacuum heat insulating materials 1 composed of small rooms, obtain the maximum heat insulating effect, and improve the cost performance. Moreover, when the shape of the core material 6 located at the end portion of the vacuum heat insulating material 1 is configured so that the end portion is positioned substantially in a straight line, the vacuum heat insulating material 1 is multi-layered with a foam heat insulating material or the like. Moreover, the heat insulation performance of the whole heat insulation panel can be enhanced by minimizing the foam heat insulation material portion where the vacuum heat insulation material 1 is not multilayered.

(Embodiment 3)
FIG. 5 is a cross-sectional view of the heat insulation panel 9 according to Embodiment 3 of the present invention.

  As shown in FIG. 5, the heat insulating panel 9 is a multilayer panel in which the vacuum heat insulating material 10 is sandwiched between the cross-sectional centers of the foam heat insulating material 11. Since such a heat insulating panel 9 has the foam heat insulating material 11 and the vacuum heat insulating material 10 in multiple layers, the unevenness on the surface of the vacuum heat insulating material 10 can be hidden by the foam heat insulating material. Can be increased. Moreover, even if nailing is performed, the heat insulation performance is not lowered and heat leak can be suppressed. Accordingly, it is possible to obtain a high-performance heat insulation panel that has high workability and exhibits the high heat insulation performance inherent to the vacuum heat insulating material.

  As described above, the vacuum heat insulating material according to the present invention maximizes the coverage of the core material portion composed of a small room to improve the heat insulating performance and has flexibility, so that, for example, a container having a curved surface has a high heat insulating effect. Can be diverted. For example, it is a heat retaining container such as a jar pot or a rice cooker.

The top view of the vacuum heat insulating material in Embodiment 1 of this invention The top view of the vacuum heat insulating material in Embodiment 1 of this invention The top view of the vacuum heat insulating material in Embodiment 2 of this invention The top view of the vacuum heat insulating material in Embodiment 2 of this invention Sectional drawing of the heat insulation panel in Embodiment 3 of this invention Cross section of conventional vacuum insulation

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,10 Vacuum heat insulating material 2, Core material 3,7 Laminated film 4,8 Core material part 6 Hexagonal core material 9 Heat insulation panel 11 Foam heat insulating material

Claims (7)

  Vacuum insulation characterized by comprising a plurality of three or more layers of vacuum insulation material that covers a plurality of core materials with a laminate film and vacuum-sealed in an independent space on the same plane so that the core material portions do not overlap. Wood.   The vacuum heat insulating material according to claim 1, wherein the core materials have substantially the same size.   The vacuum heat insulating material according to claim 1 or 2, wherein an area of the polygonal core material is 100 square centimeters or more.   The vacuum heat insulating material according to any one of claims 1 to 3, wherein a polygonal core material has a hexagonal shape.   The vacuum heat insulation according to any one of claims 1 to 4, wherein the shape of the core member positioned at the end portion of the vacuum heat insulating material is configured such that the end portion is positioned substantially in a straight line. Wood.   The heat insulation panel characterized by making the vacuum heat insulating material as described in any one of the said Claims 1-5 multilayered with the foam heat insulating material.   The heat insulating panel according to claim 6, wherein the vacuum heat insulating material according to any one of claims 1 to 5 is disposed substantially at the center of the cross section of the heat insulating panel.

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