JP2012149728A - Vacuum thermal insulator, and vacuum thermal insulation panel provided with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum thermal insulator that has strength and improved workability even with a plurality of vacuum thermal insulating sections, and to provide a vacuum thermal insulation panel provided with the same.SOLUTION: The vacuum thermal insulator 10 includes: a plurality of core members 12 juxtaposed leaving gaps therebetween to form a plurality of vacuum thermal insulation sections 11; a lath-shaped member 13 that compartmentalizes each core member by being disposed along the outer periphery of the plurality of core members; and packaging members 14, 15 that have gas barrier properties and cover the front and rear of the plurality of core members and the lath-shaped member.

Description

  The present invention relates to a vacuum heat insulating material used for a structure such as a house, a cold storage, a heat storage, or the like, and a vacuum heat insulating panel including the same.

As a heat insulating member used for structures such as houses, cold storage, and heat storage, vacuum suction is performed by covering the core with a gas barrier packaging material from the viewpoint of reducing the thickness and improving the heat insulating efficiency. A vacuum heat insulating material formed by doing so is known.
For example, in Patent Document 1 below, a plurality of core materials are covered with a jacket material having a gas barrier property, and the outer shells on the front and back sides are surrounded around the core material so that the plurality of core materials are located in independent spaces. There has been proposed a vacuum heat insulating material in which a material is welded to provide a heat welding portion (heat seal portion). In this case, since a plurality of core parts (vacuum heat insulation parts) are formed by each core material, the vacuum state of the other core material parts is maintained even if the outer cover material of any of the core material parts is damaged. It is possible to suppress a decrease in heat insulation performance.

JP 2010-13839 A

  However, in the vacuum heat insulating material in which the heat welding part is provided between the core parts as described in Patent Document 1, the heat welding part tends to bend easily. It is considered that the heat insulation performance is lowered due to the deterioration of the sealing performance in the heat welded portion or the damage of the heat welded portion due to this deformation. Moreover, when constructing such a vacuum heat insulating material on the wall or ceiling of a building, the load on each core material portion is reduced in order to prevent damage to the jacket material of each core material portion of the vacuum heat insulating material. For this reason, it has been configured to dispose trunk edges and the like on the front and back of the heat welded portion, and improvement in workability has been desired.

  The present invention has been made in view of the above circumstances, and provides a vacuum heat insulating material having strength and improving workability while having a plurality of vacuum heat insulating portions, and a vacuum heat insulating panel including the same. The purpose is to do.

  In order to achieve the above object, a vacuum heat insulating material according to the present invention includes a plurality of core materials arranged side by side so as to form a plurality of vacuum heat insulating portions, and outer peripheral side portions of the plurality of core materials. A cross-shaped member arranged so as to lie along each of the core members, and a packaging material having gas barrier properties and covering the front and back of the plurality of core members and the cross-shaped members. Features.

In the present invention, the core members may be arranged side by side in the vertical direction and the horizontal direction, and the crosspieces may be arranged in a lattice shape.
Further, in the present invention, the packaging material has a heat-welded layer made of a synthetic resin material on the front and back sides of the plurality of core members and the cross-shaped member, and the cross-shaped member can be heat-welded. It is good also as what formed from the synthetic resin type material and heat-welded the front and back of this cross-shaped member, and the said packaging material.

  Moreover, in order to achieve the said objective, the vacuum heat insulation panel which concerns on this invention is equipped with the surface material and the vacuum heat insulation material which concerns on this invention fixed to the back surface of this surface material, It is characterized by the above-mentioned.

  The vacuum heat insulating material according to the present invention and the vacuum heat insulating panel provided with the same have the above-described configuration, and thus have a plurality of vacuum heat insulating portions, have strength and improve workability. it can.

(A), (b) shows typically an example of the vacuum heat insulation panel provided with the vacuum heat insulating material which concerns on one Embodiment of this invention, (a) is a schematic front view, (b), It is a schematic cross-sectional view corresponding to the XX line arrow in (a).

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a conceptual explanatory diagram for explaining an example of a vacuum heat insulation panel provided with a vacuum heat insulating material according to the present embodiment.
As shown in FIG. 1, the vacuum heat insulation panel 1 according to the present embodiment includes a substantially rectangular flat plate-like surface material 2 and a vacuum heat insulation material 10 fixed to the back surface 2 a of the surface material 2.

  The surface material 2 is thin from a wood laminate such as plywood or LVL, a wood board such as particle board, a wood fiber board such as an insulation board or MDF (medium density fiber board), or a wood material such as solid wood. It may be formed in a flat plate shape. Or it is not restricted to what was formed from the woody material, It is good also as what was formed from inorganic materials, synthetic resin materials, etc., such as a gypsum board. Furthermore, it is good also as what was formed from the kenaf board which added the synthetic resin-type adhesive agent etc. as a binder to the fibrillated kenaf long fiber, and was boarded. Moreover, it is good also as what was formed from the composite material which mixed thru | or laminated | stacked these various materials.

The vacuum heat insulating material 10 is disposed so as to be along the outer peripheral side portions of the core materials 12 arranged in parallel at intervals so as to form the plurality of cellular vacuum heat insulating portions 11. And a cross-shaped member 13 that divides each core member 12. In the example of the figure, the core material 12 that is substantially square-shaped and sheet-like or plate-like when viewed from the front is shown in parallel in the vertical and horizontal directions at substantially equal intervals. Further, in correspondence with the side-by-side configuration of the plurality of core members 12, quadrangular columnar bar-like members 13 are arranged in a lattice shape. In the illustrated example, a plurality of vertical beam members 13A in the vertical direction, a plurality of horizontal beam members 13B in the horizontal direction, and end beam members on the outermost four sides so as to follow the outer peripheral side portions of the plurality of core members 12. The example which formed or arrange | positioned 13C in each is shown.
The vacuum heat insulating material 10 has gas barrier properties, and includes packaging materials 14 and 15 provided so as to cover the front side and the back side of the plurality of core members 12 and the cross-shaped members 13.

As the core material 12, a material having a low thermal conductivity is used, and a foamed body, a granular body, or a fibrous body can be used. For example, examples of the foam include open-cell urethane foam, styrene foam, and phenol foam. Examples of the granular material include inorganic and organic materials, such as those obtained by pulverizing various foam materials, silica, alumina, pearlite, and the like. Examples of the fiber body include inorganic and organic materials, and examples thereof include glass fiber, glass wool, rock wool, and cellulose fiber. Moreover, as a material employ | adopted for the core material 12, you may make it employ | adopt foams, such as a urethane foam with comparatively low heat capacity, or this granular material.
Furthermore, you may make it mix and use the above-mentioned various foams, a granular material, and a fiber body.

The core member 12 may be processed into a sheet shape or a plate shape in advance, and may be disposed in a space surrounded by the cross-shaped member 13, or in the space surrounded by the cross-shaped member 13. Each core material 12 may be formed by filling the above-described various foams, powder particles, fiber bodies, and the like. Moreover, you may make it form each core material 12 by exterior-wrapping various above-mentioned foams, a granular material, a fiber body, etc. with the bag-shaped member which consists of a nonwoven fabric with air permeability.
In addition, the thickness dimension of the core material 12 (the dimension along the thickness dimension of the vacuum heat insulating material 10) is determined in consideration of the compressibility of the material used for the core material 12, and the packaging material 14 as described later. , 15, and vacuum suction, the dimension may be approximately the same as the thickness dimension of a beam member 13 to be described later or slightly smaller than the thickness dimension of the beam member 13.

Examples of the cross-shaped member 13 include a material obtained by processing a wooden material, wood powder / synthetic resin composite material, synthetic resin material, or the like into a square pillar shape, and may be made of a material having low thermal conductivity and low heat capacity. Good. This cross-shaped member 13 may be formed in a lattice shape in advance as shown in the figure corresponding to the shape of the vacuum heat insulating material 10 and the shape of the core material 12, or a plurality of quadrangular prism-shaped members. The cross-shaped members 13 may be joined to form a lattice shape.
Further, the cross-shaped member 13 may have gas barrier properties at least in the width direction of the cross-shaped member 13 (the surface area direction, the vertical direction, and the horizontal direction of the vacuum heat insulating material 10). As such a bar-shaped member 13, for example, a cross section made of a synthetic resin material, or a coating layer as a gas barrier layer may be formed on the four circumferential sides of a wood material.
In the present embodiment, the cross-shaped member 13 is formed of a synthetic resin material that can be heat-welded with a heat-welding layer of packaging materials 14 and 15 to be described later, such as polyethylene resin and polypropylene resin.

In the illustrated example, the packaging materials 14 and 15 include a front side packaging material 14 disposed on the front side of the vacuum heat insulating material 10 and a back side packaging material 15 disposed on the back side of the vacuum heat insulating material 10. Illustrated.
Examples of the packaging materials 14 and 15 include a metal film having a gas barrier property. In this embodiment, the protective layer is provided on the front side, the gas barrier layer is provided on the middle side, and the back side (the core material 12 and the cross-shaped members 13 are formed). A laminated film or a laminated sheet having a heat welding layer on the front and back sides is used. That is, the vacuum insulating material 10 has a protective layer on the outer layer side and a heat welding layer on the inner layer side, and the packaging materials 14 and 15 have a gas barrier layer therebetween.

As the protective layer, a resin film having a melting point higher than that of the heat welding layer can be used, and examples thereof include a nylon resin, a polyethylene terephthalate resin, a polypropylene resin or the like processed into a film shape.
As the gas barrier layer, a metal film having a gas barrier property or a metal vapor deposition layer can be used, and examples thereof include an aluminum foil or the like and an aluminum vapor deposition layer.
As the heat-welded layer, a resin film having heat-weldability can be used, and examples thereof include those obtained by processing a polyethylene resin, a polypropylene resin, a polyacrylonitrile resin, or the like into a film shape. In this embodiment, this heat-welding layer is assumed to be capable of being heat-welded to the cross-shaped member 13 (for example, made of the same resin material such as polyethylene resin).

For example, the vacuum heat insulating material 10 may be manufactured as follows.
First, the front and back packaging materials 14 and 15 are arranged so that the respective heat-welded layers of the front packaging material 14 and the back packaging material 15 are opposed to each other, and the cross-shaped members 13 and 15 are disposed between the front and back packaging materials 14 and 15. The core material 12 is disposed. And the site | part of the core material 12 is vacuum-sucked and pressure-reduced, and the heat welding layer of the packaging materials 14 and 15 of the front and back, the surface and the back surface of the cross-shaped member 13, and the outermost periphery side part are heat-welded (heat seal). You may make it form in. Thereby, the outer peripheral side part of each core material 12 is sealed with the crosspiece-shaped member 13, and the front and back of each core material 12 is sealed with the packaging materials 14 and 15 of the front and back, and the plurality of cellular vacuum heat insulating parts 11 are formed. It is formed.

When the parts of the core material 12 are in a reduced pressure state, the parts of the core material 12 are sequentially put in a reduced pressure state, and the packaging materials 14 and 15 and the cross-shaped member 13 are sequentially heat-welded to form the vacuum heat insulating portion 11. May be formed. Alternatively, for example, all the core members 12 are in a reduced pressure state in a vacuum apparatus such as a vacuum pot, and the plurality of vacuum heat insulating portions 11 are formed by heat-welding the packaging materials 14 and 15 and the cross-shaped members 13. It may be.
Further, in the illustrated example, the four peripheral edge portions of the front and back packaging materials 14 and 15 are arranged on the outer side of the end-piece-like member 13C disposed on the outermost peripheral portion of the vacuum heat insulating material 10 (the surface of the vacuum heat insulating material 10). Although the example which carried out heat welding to the surface of the area direction outer side) is shown, it is not restricted to such an aspect. For example, the four peripheral edge parts of the front and back packaging materials 14 and 15 are further extended outward, and the heat welding part (the front and back packaging materials 14 and 15 are thermally welded around the vacuum heat insulating material 10 by these ( A heat seal portion) may be formed. In addition, the manufacturing method and manufacturing procedure of the said vacuum heat insulating material 10 are not restricted to an above-described example, A various method and procedure are employable.

According to the vacuum heat insulating material 10 having the above-described configuration, since the plurality of vacuum heat insulating portions 11, 11, 11... Since the vacuum state of the vacuum heat insulating part 11 is maintained, it is possible to suppress a decrease in heat insulating performance. Moreover, it can also cut | disconnect in the site | part of the cross-shaped member 13, and if it cuts in the said site | part, it will also become possible to adjust a dimension in a construction site etc., without reducing heat insulation performance.
Moreover, since the cross-shaped member 13 which divides each core material 12 along the outer peripheral side part of the several core material 12 is arrange | positioned, several vacuum heat insulation parts are connected by the conventional heat welding part. Compared to the above, deformation at the heat welded portion is less likely to occur. Therefore, the strength of the vacuum heat insulating material 10 can be improved by the cross-shaped member 13, and a decrease in the heat insulating performance due to the breakage of the heat welding portion as in the conventional case can be suppressed. In addition, since a fixing stopper such as a screw or a nail can be fixed to the portion of the cross-shaped member 13, workability can be improved.
Furthermore, since the strength of the vacuum heat insulating material 10 can be ensured by the cross-shaped member 13, the degree of freedom in selecting the material constituting the core material 12 can be improved as compared with the conventional one, and the shape retaining property can be improved. The core material 12 which consists of a low core material 12 and a material with a low heat capacity can also be employ | adopted.

  Furthermore, the degree of freedom of the thickness dimension can be improved while improving the heat insulation efficiency as compared with a vacuum heat insulating material configured to connect a plurality of core members by a conventional heat welding part (seal part). it can. In other words, with conventional products, when forming a heat-welded portion between relatively thick core materials, it is necessary to closely adhere the packaging material to the outer peripheral side portion of the core material and to ensure sealing performance. Therefore, it is necessary to increase the dimension between the core materials, and the heat insulation efficiency tends to decrease. On the other hand, according to the vacuum heat insulating material 10 according to the present embodiment, the cross-shaped member 13 is interposed between the core materials 12 and the front and back surfaces thereof are covered with the packaging materials 14 and 15. Therefore, even if the width dimension of the cross-shaped member 13 (dimension along the surface region direction of the vacuum heat insulating material 10) is relatively small, the airtightness can be secured and the heat insulation efficiency can be improved, but the thickness is increased. The dimensions can be made relatively large. That is, the area where the vacuum heat insulating portion 11 exists along the surface area direction of the vacuum heat insulating material 10 can be efficiently increased as compared with the conventional one, and the heat insulating efficiency can be improved.

Moreover, in this embodiment, since the crosspiece-shaped member 13 is arrange | positioned at the grid | lattice form, intensity | strength can be improved more. In addition, since the cross-shaped members 13 are arranged in a lattice shape, the degree of freedom of fixing points of fixing fasteners such as screws and nails can be improved, and it is suitable as a heat insulating material to be constructed in a building or the like. It will be something.
Furthermore, in this embodiment, the packaging materials 14 and 15 which have a heat welding layer are employ | adopted, the cross-shaped member 13 which can be heat-welded with this is employ | adopted, the front and back of this cross-shaped member 13, and the packaging materials 14 and 15 and Is heat-welded. Accordingly, the core material 12 is disposed in the space surrounded by the cross-shaped members 13, and the packaging materials 14 and 15 are disposed on the front and back surfaces thereof to be in a vacuum state. Can be formed easily, and productivity can be improved. Moreover, since the cross-shaped member 13 is formed from a synthetic resin material, the airtightness of the vacuum heat insulating part 11 formed in the space surrounded by these can be improved. That is, the cross-shaped member 13 itself functions as a seal portion. Note that the same effect can be obtained when a cross-shaped member having a gas barrier property at least in the width direction is employed as described above.

  In addition, as described above, if the core member 12 and the crosspiece member 13 are formed of a material having a low heat capacity, consumption of heat accompanying these temperature fluctuations can be reduced. Therefore, when the said vacuum heat insulating material 10 is arrange | positioned in a building etc., the energy required when temperature-controlling the space in this building with an air conditioning apparatus etc. can be reduced.

  Further, the vacuum heat insulation panel 1 according to the present embodiment has a structure in which the vacuum heat insulating material 10 having the above configuration is fixed to the back surface 2 a of the surface material 2. According to such a vacuum heat insulation panel 1, it can construct directly with respect to construction foundations, such as a wall and a ceiling of a building, and simplification of construction work can be aimed at.

  The surface material 2 and the vacuum heat insulating material 10 may be fixed and integrated by an adhesive means such as an adhesive or a double-sided adhesive tape (double-sided adhesive tape) to form the vacuum heat insulating panel 1. Instead of or in addition to such a bonding means, the surface material 2 and the vacuum heat insulating material 10 are fixed and integrated by fixing fasteners such as nails, screws, tuckers, staples, etc., so that the vacuum heat insulating panel 1 is formed. It may be. When a panel is formed using such a fixed stopper, the fixed stopper may be fixed to a portion of the vacuum heat insulating material 10 where the cross-shaped member 13 is disposed. In the illustrated example, the vacuum heat insulating panel 1 is shown in which the four peripheral ends of the surface material 2 are extended outward from the outer peripheral edge of the vacuum heat insulating material 10 and fixed together. When it is set as such a structure, you may make it fix the extension site | part of the surface material 2 to wall bases, such as a trunk edge, a horizontal cross, a vertical cross, for example. In addition, it is good also as the vacuum heat insulation panel 1 which fixedly integrated the vacuum heat insulating material 10 and the surface material 2 so that it might superpose | polymerize substantially in the thickness direction, without providing the extension site | part of such a surface material 2. FIG.

In addition, a mark or the like indicating the location of the crosspiece member 13 is provided on the surface side of the surface material 2, and this location is used for fixing fasteners such as screws and nails used when the vacuum heat insulating panel 1 is attached to an attachment target. You may make it be a stop location.
Furthermore, after constructing the vacuum insulation panel 1 on the wall, ceiling, etc. of the building, construct a ceiling finishing material, a wall finishing material, etc., as appropriate, on the indoor side surface of the vacuum insulation panel 1 (surface of the surface material 2). Or a synthetic resin decorative sheet, decorative paper, cloth paper or the like may be applied or painted.
Furthermore, it is good also as an aspect which constructs the vacuum heat insulation panel 1 which concerns on this embodiment post-construction by using an existing ceiling material, wall material, etc. as a construction foundation.
Further, the construction foundation is not limited to the ceiling foundation or the wall foundation, and a floor foundation, a roof foundation, or the like may be used as the construction foundation. Furthermore, the attachment target of the vacuum heat insulation panel 1 is not limited to the construction base in such a residence, and another structure such as a cold storage or a heat storage may be the attachment target.

Moreover, although the vacuum heat insulation panel 1 which adhered the vacuum heat insulating material 10 to the back surface 2a of the surface material 2 is illustrated in the example of the figure, it replaces with the surface material 2 or in addition, it is the surface on the back surface of the vacuum heat insulating material 10 It is good also as a vacuum heat insulation panel which fixed the back material similar to the material 2. FIG.
Furthermore, in the example of the drawing, an example in which the vacuum heat insulating material 10 is provided on the vacuum heat insulating panel 1 is shown, but the vacuum heat insulating material 10 according to the present embodiment has the strength as described above and is excellent in handleability. Therefore, the vacuum heat insulating material 10 can be attached to various attachment objects as a single unit.
Furthermore, the vacuum heat insulating material 10 according to the present embodiment may be accommodated in a floor heating panel or the like.

In the present embodiment, an example is shown in which a plurality of cellular vacuum heat insulating portions 11 are formed vertically and horizontally at intervals in the vertical direction and the horizontal direction, and the cross-shaped members 13 are arranged in a lattice shape. It is not restricted to such an aspect. For example, the cross-shaped members 13 may be arranged in a zigzag or oblique shape, and the core material 12 may be disposed in a space surrounded by the cross-shaped members 13. Or it is good also as what has the several cell-shaped vacuum heat insulation part 11 at intervals only in the horizontal direction or the vertical direction.
Furthermore, although the vacuum heat insulating material 10 made into the rectangular flat plate shape is illustrated in the example of a figure, it is good also as what was set as the disk shape, the triangular plate shape, and other shapes. In this case, you may make it deform | transform suitably the outer peripheral shape of the crosspiece-shaped member 13 and the core material 12. FIG.
Furthermore, in this embodiment, although the vacuum heat insulating material 10 which heat-welded the packaging materials 14 and 15 which have a heat welding layer, and the cross-shaped member 13 which can be heat-welded to this is illustrated, such an aspect Not limited to. For example, you may make it adhere | attach the packaging materials 14 and 15 and the cross-shaped member 13 with an adhesive agent.

DESCRIPTION OF SYMBOLS 1 Vacuum heat insulation panel 2 Surface material 10 Vacuum heat insulation material 11 Vacuum heat insulation part 12 Core material 13 Cross-shaped member 14 Front side packaging material 15 Back side packaging material

Claims (4)

A plurality of core members arranged side by side so as to form a plurality of vacuum heat insulating portions; and
A cross-shaped member that is arranged so as to be along the outer peripheral side portion of the plurality of core members to partition each core member;
A packaging material having a gas barrier property and covering the front and back of the plurality of core members and the crosspiece member,
It is equipped with the vacuum heat insulating material characterized by the above-mentioned. In claim 1,
A vacuum heat insulating material, characterized in that the core members are arranged in parallel in the vertical direction and the horizontal direction, and the cross-shaped members are arranged in a lattice shape. In claim 1 or 2,
The packaging material has a heat-welded layer made of a synthetic resin material on the front and back sides of the plurality of core members and the cross-shaped member,
The said cross-shaped member is formed from the synthetic resin type material which can be heat-welded, The front and back of this cross-shaped member, and the said packaging material are heat-welded, The vacuum heat insulating material characterized by the above-mentioned.   A vacuum heat insulating panel comprising: a surface material; and the vacuum heat insulating material according to any one of claims 1 to 3 fixed to a back surface of the surface material.

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