JP2010013839A - Heat insulating wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat insulating wall capable of remodeling a wall of a house to insulate heat without applying load on a vacuum heat insulating member. <P>SOLUTION: This heat insulating wall is composed of the wall 2 constructed on a column 1, the vacuum heat insulating member 3, furring strips 6a arranged on a wall 2 side face of a non-core material part 5 having no core material of the vacuum heat insulating member 3, furring strips 6b arranged on a reverse side face to the wall 2 of the non-core material part 5, nails 7 being fixing members for fixing the furring strips 6a, the non-core material parts 5, and the furring strips 6b on the wall 2 by passing through them, a board member 8 constructed on the furring strips 6b, and nails 9 being joining members for fixing the board member 8 on the wall 2. Consequently, since the vacuum heat insulating member 3 is fixed by using the non-core material parts 5, load to be applied on the vacuum heat insulating member 3 can be reduced, and the board member 8 can be constructed into a plane condition at a position having thickness of a part where the non-core material part 5 and the furring strips 6a, 6b are fixed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heat insulating wall in which a heat insulating performance is improved by applying a vacuum heat insulating material to a wall of a building.

  There exists a thing as shown in FIG. 3 as a heat insulation wall which applied the conventional vacuum heat insulating material (for example, refer patent document 1).

FIG. 3 is a schematic cross-sectional view of a heat insulating wall disclosed in Patent Document 1. As shown in FIG. As shown in FIG. 3, the conventional heat insulating wall is formed with an airtight layer 102 made of an airtight sheet on the indoor side of the wall frame 101, and a crosspiece member 103 and a crosspiece member 104 each serving as a ventilator edge on the outside of the room. Install. Further, a vacuum heat insulating material 105 is formed outside the airtight layer 102, a moisture-proof waterproof sheet and an exterior material 106 are attached to the outside of the airtight layer 102, and a ventilation layer 107 is formed between the vacuum heat insulating material 105 and the exterior material 106. Is.
JP 2004-204606 A

  However, since the vacuum heat insulating material 105 is sandwiched and fixed by the crosspiece member 103 and the crosspiece member 104, there is a problem that a load is applied to a local portion of the vacuum heat insulating material 105. Further, there is a problem that the number of man-hours increases because it is necessary to fold the seal portion that seals the vacuum heat insulating material 105 to fit between the cross member 103 and the cross member 104.

  In view of the above problems, an object of the present invention is to provide a heat insulating wall that is simple and has good heat insulating performance without applying a load to a vacuum heat insulating material.

  In order to achieve the above object, the heat insulating wall of the present invention is a heat insulating wall in which a vacuum heat insulating material is fixed to a building wall by a fixing member, and a board material is fixed from above the vacuum heat insulating material by a bonding member. The vacuum heat insulating material has a gas barrier outer covering material having a heat welding layer and a core material, and the core material is sealed under reduced pressure between the outer covering materials facing each other. And sandwiching both sides of the coreless part without the core material between the jacket materials in the vacuum heat insulating material with a trunk edge, and connecting the wall without the core part and the trunk edge with the fixing member to the wall The board material is fixed at the position of the trunk edge by the joining member.

  Thereby, it is possible to provide a heat insulating wall that is simple and has good heat insulating performance without applying a load to the vacuum heat insulating material.

  In the heat insulating wall of the present invention, it is possible to reduce the load applied to the vacuum heat insulating material because the vacuum heat insulating material is fixed using the coreless portion without the core material between the jacket materials in the thickness direction of the core material. Become. Further, since the vacuum heat insulating material is thinner than the distance between the wall and the board material, the board material is not pressed by the vacuum heat insulating material. Thereby, since the load concerning a vacuum heat insulating material can be reduced and a board | substrate material can be set in a planar state, it becomes possible to apply a vacuum heat insulating material to the wall of a building.

  The invention of the heat insulating wall according to claim 1 is a heat insulating wall in which a vacuum heat insulating material is fixed to a building wall by a fixing member, and a board material is fixed from above the vacuum heat insulating material by a joining member, The vacuum heat insulating material has a gas barrier outer covering material having a heat welding layer and a core material, and the core material is sealed under reduced pressure between the outer covering materials facing each other. Yes, sandwiching both sides of the coreless part without the core material between the jacket materials in the vacuum heat insulating material with a trunk edge, and fixing the coreless part and the trunk edge to the wall with the fixing member Then, the board material is fixed at the position of the trunk edge by the joining member.

  With the above configuration, when the board material is constructed in a flat state at the position of the thickness where the coreless part and the body edge are fixed, the bending of the coreless part is reduced compared to the case where there is one joining auxiliary member. Therefore, it is possible to reduce the load applied to the portion without the core material. Thereby, it becomes difficult to damage the jacket material and it is possible to reduce the increase in the internal pressure of the vacuum heat insulating material, so that a heat insulating wall having high heat insulating performance can be maintained for a long period of time.

  Moreover, since a vacuum heat insulating material is fixed using a part without a core material, it becomes possible to reduce the load concerning a vacuum heat insulating material.

  According to a second aspect of the present invention, there is provided a heat insulating wall according to the first aspect, wherein a thickness of a portion where the coreless portion and the trunk edge are disposed is equal to that of the outer cover material in the vacuum heat insulating material. In addition to the effect of the invention according to claim 1, in addition to the thickness at the portion where the core-free portion and the trunk edge are fixed, the heat insulation is more vacuum-insulated. Since the material is thin, the board material is not pressed by the vacuum heat insulating material. Thereby, a board | substrate material can be constructed in a plane state in the position of the thickness of the part to which the core material absence part and the trunk edge were fixed.

  The invention of the heat insulation wall according to claim 3 is the invention according to claim 2, wherein the thickness of the trunk edge fixed to the wall side is determined from the wall side surface of the core member portion and the core member portion and It is thicker than the width to the joint of the core part, and the thickness of the trunk edge fixed to the board side is a joint between the core part and the coreless part from the board side surface of the core part Thus, in addition to the effect of the invention of claim 2, it is not in contact with the vacuum heat insulating material when fixing the board material, so that the portion without the core material is not bent, It is possible to reduce the load applied to the coreless portion. Thereby, it becomes difficult to damage the jacket material and it is possible to reduce the increase in the internal pressure of the vacuum heat insulating material, so that a heat insulating wall having high heat insulating performance can be maintained for a long period of time.

  In addition, since the wall and the core material portion do not come into contact with each other, it is possible to reduce damage to the core material portion due to unevenness of the wall or the like, and it is possible to reduce the increase in internal pressure of the vacuum heat insulating material.

  The invention of the heat insulating wall according to claim 4 is the invention according to claim 3, wherein at least a width from the wall or the board material to the surface of the core part is 15 mm or less, and 15 mm or less. Since air convection can be suppressed in the space, a heat insulating wall with high heat insulating performance can be obtained. Thereby, the comfort of a house improves.

  The invention of the heat insulation wall according to claim 5 is the invention according to any one of claims 1 to 4, wherein a portion where the jacket materials are in contact with each other is thermally welded. If there are multiple core parts in one vacuum insulation, even if one core part is accidentally damaged and a vacuum break occurs, the other core parts will not cause a vacuum break, minimizing deterioration of heat insulation performance be able to.

  Here, the vacuum heat insulating material is a material in which a core material having a high gas phase ratio, which is an aggregate, is covered with an outer covering material such as a gas barrier film or a container, and the inside is vacuum-sealed, and the inside is in a vacuum state. Refers to a heat insulating material with reduced heat conduction of gas components.

  Next, the constituent materials of the vacuum heat insulating material will be described in detail.

  The material used for the core material is obtained by processing a porous body having a gas phase ratio of about 90% into a sheet or plate, and industrially usable materials include foams, powders, and fiber bodies. . These can use a well-known material according to the use use and required characteristic.

  Among these, as the foam, open-cell bodies such as urethane foam, styrene foam, and phenol foam can be used. In addition, inorganic, organic, and mixtures thereof can be used as the powder, but industrially, powders mainly composed of dry silica, wet silica, pearlite, and the like can be used.

  In addition, inorganic, organic, and mixtures thereof can be used as the fibrous body, but inorganic fibers are advantageous from the viewpoint of cost and heat insulation performance. As an example of the inorganic fiber, a known material such as glass wool, glass fiber, alumina fiber, silica alumina fiber, silica fiber, rock wool, or the like can be used.

  In addition, mixtures of these foams, powders, fiber bodies and the like can also be applied.

  The laminate film used for the jacket material is a laminate film in which the innermost layer is a heat-welded layer, the middle layer is a gas barrier layer, a metal foil or a metal vapor-deposited layer, and the outermost layer is provided with a surface protective layer Is applicable. In addition, the laminate film may be applied by combining two types of laminate films, ie, a laminate film having a metal foil and a laminate film having a metal vapor deposition layer.

  In addition, as a heat welding layer, a low density polyethylene film, a chain low density polyethylene film, a high density polyethylene film, a polypropylene film, a polyacrylonitrile film, an unstretched polyethylene terephthalate film, an ethylene-vinyl alcohol copolymer film, or those A mixture or the like can be used.

  As the surface protective layer, known materials such as nylon film, polyethylene terephthalate film, and stretched polypropylene film can be used.

  Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
1 is a cross-sectional view of a heat insulating wall according to Embodiment 1 of the present invention. FIG. 2 shows a cross-sectional view of the vacuum heat insulating material in the first embodiment.

  The heat insulating wall of the present embodiment is a core that does not have the core material 4 between the outer cover material in the thickness direction of the core material 4 in the wall 2, the vacuum heat insulating material 3, and the vacuum heat insulating material 3. The body edge 6a disposed on the wall 2 side surface of the no-material portion 5, the body edge 6b disposed on the surface opposite to the wall 2 of the core-free portion 5, and the body edge 6a and no core material Nail 7 which is a fixing member which penetrates the portion 5 and the trunk edge 6b and is fixed to the wall 2, a board material 8 which is constructed on the trunk edge 6b, and a nail which is a joining member which fixes the board material 8 to the wall 2 9.

  In the heat insulating wall of the present embodiment, the vacuum heat insulating material 3 is fixed to the building wall 2 by a fixing member (nail 7), and the board material 8 is fixed from above the vacuum heat insulating material 3 by a joining member (nail 9). The vacuum heat insulating material 3 has a gas barrier outer covering material having a heat welding layer 11 and a core material 4, and a core is provided between the outer covering materials facing each other. The material 4 is sealed under reduced pressure, and the both sides of the coreless portion 5 without the core material 4 are sandwiched between the jacket material in the vacuum heat insulating material 3 by the trunk edges 6a and 6b, and the coreless portion 5 and the trunk This is a heat insulating wall for fixing the edges 6a and 6b to the wall 2 with fixing members (nails 7) and fixing the board material 8 at the positions of the trunk edges 6a and 6b with the joining members (nails 9).

  The vacuum heat insulating material 3 is formed by covering a plurality of core materials 4 made of a fibrous body, for example, having a thickness of 3 to 10 mm with a jacket material made of a gas barrier laminate film, and reducing the inside of the jacket material. A heat-welded portion is provided around the core material 4 so that the core material 4 is located in an independent space.

  As a result, all the core materials 4 of the vacuum heat insulating material 3 are provided with heat welding portions around the core materials 4 so as to be located in independent spaces, thereby forming the independent vacuum heat insulating materials 3. . A vacuum heat insulating material composed of one core material 4 may be used. Further, the outer cover material has a structure in which a heat welding layer 11 made of polyethylene and a gas barrier layer 12 made of aluminum foil of 10 μm or less and a protective layer 13 made of nylon are laminated in this order from the core material 4 side.

  The trunk edges 6a and 6b generally refer to the crosspieces that are passed to the pillar 1 and the pillar 1 as a ground for stopping the plate with the wall. It also refers to those that are constructed in parallel to 1. In the present invention, the term “board” refers to the board material 8. The trunk edges 6a and 6b are made of wood in the present embodiment, but may be made of a foam material. For example, a foam heat insulating material made of polystyrene, polypropylene, polyethylene, urethane or the like can be used. By using a foam material, the heat insulation performance of the heat insulating wall can be improved, and comfort is improved.

  Next, a specific heat insulation repair method will be described. The trunk edge 6a is fixed to the conventional wall 2 of the house to be heat-insulated by a nail 7 as a fixing member at a predetermined interval, in the case of this embodiment, at a 455 mm pitch. The fixing member may be fixed with a screw, a tucker, an adhesive, or the like.

  Next, the vacuum heat insulating material 3 is disposed so that the coreless part 5 is positioned on the trunk edge 6 a, and the nails 7 are fixed to the trunk edge 6 a at the coreless part 5.

  Next, the trunk edge 6b is disposed on the coreless portion 5 and fixed by a nail 9 as a joining member. In this step, the coreless portion 5 may be fixed at the same time. Moreover, you may fix with a screw, a tucker, etc. as a joining member.

  Next, the board material 8 is disposed and fixed by the nail 9 at the place where the trunk edge 6b is installed. This completes the insulation renovation.

  When the heat conductivity of the vacuum heat insulating material 3 is 0.0040 W / m / K and the thickness is 3 mm, the thermal resistance is 0.75 m 2 · K / W, which corresponds to a thickness of glass wool 10K of about 38 mm. This value is a level which raises the heat insulation performance of the old energy saving standard of the house from 1980 to 1991 to the heat insulation performance of the new energy saving standard of 1992. By the way, there are 15 million old energy-saving standards in Japan and 6 million new energy-saving standards, but there are 33 million standards that are lower than the old energy-saving standards. Thereby, even if the thickness of the vacuum heat insulating material 3 is 3 mm, the heat insulation performance can be greatly improved. Furthermore, when the vacuum insulation material 3 having a thickness of 10 mm is used for heat insulation retrofit, the thermal resistance is 2.48 m 2 · K / W, and the heat insulation performance of the old energy saving standard of the house from 1980 to 1991 is obtained. It is possible to achieve high heat insulation, which is a level that can be raised to the heat insulation performance of the next generation energy saving standard of 1998.

  As described above, when the board member 8 is constructed in a planar state at the position of the thickness where the coreless part 5 and the trunk edge 6a and the trunk edge 6b are fixed, either the trunk edge 6a or the trunk edge 6b is selected. As compared with the case where the board member 8 is disposed without being disposed, the bending of the coreless portion 5 can be reduced and the load applied to the coreless portion 5 can be reduced. Thereby, it becomes difficult to damage the jacket material, and it is possible to reduce the increase in the internal pressure of the vacuum heat insulating material 3, so that the heat insulating wall 2 having high heat insulating performance can be maintained over a long period of time.

  Moreover, since the vacuum heat insulating material 3 is fixed using the coreless part 5, the load applied to the vacuum heat insulating material 3 can be reduced.

  Further, when the vacuum heat insulating material 3 is broken, the pressure applied to the core material portion 10 from the outside disappears, so that the core material portion 10 swells and becomes thicker, but the body material is larger than when the board material 8 is constructed without the trunk edge 6b. Since there is room for the core material portion 10 to expand by the thickness of the edge 6b, the problem of the board material 8 being pressed and expanded by the core material portion 10 can be reduced.

  Further, even if one core member 10 is accidentally damaged to cause a vacuum break, the other core members 10 do not cause a vacuum break, so that deterioration of heat insulation performance can be minimized.

  Moreover, the thickness of the vacuum heat insulating material 3 may be thinner than the thickness at the portion where the coreless portion 5 and the trunk edge 6a and the trunk edge 6b are fixed. Thereby, when the board material 8 is constructed, the board material 8 is not pressed against the vacuum heat insulating material 3. Therefore, it becomes easy to construct the board material 8 in a planar state at the position of the thickness where the coreless portion 5 and the trunk edge 6a and the trunk edge 6b are fixed. The thickness is the width with respect to the direction perpendicular to the wall.

  The thickness of the trunk edge 6a fixed to the wall 2 side is thicker than the width from the wall 2 side surface of the core member 10 to the joint between the core member 10 and the non-core member 5 and is fixed to the board side. The thickness of the formed trunk edge 6b may be thicker than the width from the board-side surface of the core member 10 to the joint between the core member 10 and the non-core member 5. Although the surface of the core material part 10 has irregularities, it is desirable to use the most convex part as a reference. Based on at least the average position. In the case of this specification, it is possible to fix the board material 8 without bending the coreless part 5, so that the load applied to the coreless part 5 can be reduced. Thereby, it becomes difficult to damage the jacket material, and it is possible to reduce the increase in the internal pressure of the vacuum heat insulating material 3, so that a heat insulating wall with high heat insulating performance can be maintained for a long period of time. In addition, since the wall 2 and the core member 10 are hardly in contact with each other, it is possible to reduce damage to the core member 10 due to the unevenness of the wall 2 and so on, and further increase in the internal pressure of the vacuum heat insulating material 3 can be reduced. It becomes. Furthermore, by making the width between the wall 2 and the core member 10 or the width of the wall 2 and the board material 8 15 mm or less, air convection can be suppressed in a space of 15 mm or less, so that heat insulation with high heat insulation performance is achieved. You can get a wall. Thereby, the comfort of a house improves. In addition, since there is a space between the board material 8 and the core material portion 10, there is room for the core material portion 10 to expand even if the core material portion 10 is broken, so that the board material 8 is pressed and expanded by the core material portion 10. Problems can be reduced.

  Further, in the present embodiment, the heat welding portion is provided around the vacuum heat insulating material 3 so that all the core materials of the vacuum heat insulating material 3 are located in independent spaces, but only the four sides of the vacuum heat insulating material 3 are heated. A specification in which a welded portion is provided may be used. In this case, construction can be performed by hitting the nail 7 or the nail 9 on the heat welded portion or the outside of the heat welded portion.

  Since the heat insulation wall concerning this invention fixes a vacuum heat insulating material using a core-material-free part, it becomes possible to reduce the load concerning a vacuum heat insulating material. Further, since the vacuum heat insulating material is thinner than the distance between the wall and the board material, the board material is not pressed by the vacuum heat insulating material. As a result, the load on the vacuum heat insulating material can be reduced, and the board material can be applied in a flat state, so it is possible to apply the vacuum heat insulating material to the wall of the building. Is also possible.

Sectional drawing of the heat insulation wall in Embodiment 1 of this invention Sectional drawing of the vacuum heat insulating material used for the heat insulation wall of the embodiment Sectional view of conventional heat insulation wall

Explanation of symbols

2 Wall 3 Vacuum heat insulating material 4 Core material 5 No core material part 6a Body edge 6b Body edge 7 Nail 8 Board material 9 Nail 10 Core material part

Claims (5)

A heat insulating wall in which a vacuum heat insulating material is fixed to a building wall by a fixing member, and a board material is fixed from above the vacuum heat insulating material by a bonding member, and the vacuum heat insulating material has a gas barrier property having a heat-welded layer. And the core material is sealed under reduced pressure between the jacket materials facing the heat-welded layers, and the outer jacket material of the vacuum heat insulating material The both sides of the coreless part without the core material are sandwiched between the trunk edges, the coreless part and the trunk edge are fixed to the wall by the fixing member, and the board material is fixed by the joining member. Insulating wall that is fixed at the edge. The thickness of the part in which the said core material absence part and the said trunk edge were arrange | positioned is more than the thickness of the core material part with the said core material between the said jacket materials in the said vacuum heat insulating material. Insulated wall. The thickness of the trunk edge fixed to the wall side is thicker than the width from the wall-side surface of the core member portion to the joint between the core member portion and the core member portion, and is fixed to the board side. The heat insulation wall according to claim 2, wherein a thickness of the trunk edge is thicker than a width from a surface of the core part on the board side to a joint between the core part and the non-core part. The heat insulating wall according to claim 3, wherein a width from at least the wall or the board material to the surface of the core member is 15 mm or less. The heat insulation wall as described in any one of Claim 1 to 4 in which the part which the said jacket materials are contacting is heat-welded.

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