JP5869928B2 - Basic insulation structure - Google Patents

Description

  The present invention relates to a basic heat insulating structure capable of improving the heat insulating property of an underfloor space while reducing the thickness of a heat insulating material.

  For example, in order to efficiently use underfloor air that is cooler than the outside air in summer and warmer than the outside air in winter, it has been proposed to improve the heat insulation of the underfloor space. In order to enhance such heat insulation, for example, it is known to add a heat insulating material to the inner peripheral surface of the rising portion of the foundation protruding at a small height from the ground to insulate the foundation and the underfloor space. . As this heat insulating material, for example, a foamed resin heat insulating material made of foamed polyethylene or the like is used. Related technologies include the following.

Japanese Patent Laid-Open No. 2005-042958

  By the way, in order to ensure the heat insulation required by the recent energy saving, it is necessary to sufficiently secure the thickness of the heat insulating material. On the other hand, when the thickness of the heat insulating material is increased in order to improve the heat insulating performance, the heat insulating material may interfere with a large pull that supports the floor material or the like in the underfloor space. For this reason, there is a limit to increasing the thickness of the heat insulating material, and there is a problem that the heat insulating material in the underfloor space cannot be sufficiently improved.

  The present invention has been devised in view of the actual situation as described above, and a heat insulating material attached to the inner surface of the rising portion of the foundation includes a foamed resin-based heat insulating material disposed on the rising portion side, and the foamed resin. Basic heat insulation structure that can improve the heat insulation of the underfloor space while reducing the thickness of the heat insulation material, based on the fact that it is composed of a laminated structure that overlaps the vacuum heat insulating material that covers the underfloor space side of the system heat insulating material The main purpose is to provide.

Invention of Claim 1 among this invention is a basic heat insulation structure which insulates the foundation of a building,
The foundation includes a rising portion that protrudes from the ground and surrounds the underfloor space, and a heat insulating material is attached to an inner peripheral surface of the rising portion facing the underfloor space, and the heat insulating material is disposed on the rising portion side. provided the the foamed resin insulation Ri Do a laminated structure of repeating the vacuum heat insulating material covering the underfloor space side of the foamed resin insulation, the foaming resin insulation, along the rising portion The vacuum heat insulating material includes a vacuum heat insulating material body in which a core material is sealed with a pair of sheet materials, and an outer periphery of the vacuum heat insulating material main body. And the pair of sheet materials have edge portions in close contact with each other, and the lower edge portion connected to the lower portion of the vacuum heat insulating body is the vertical portion and the horizontal portion of the foamed resin-based heat insulating material. The heat insulating material is sandwiched between the foamed resin heat insulating material and The vacuum heat insulating material is attached, and the edge portion of the vacuum heat insulating material is disposed so as to straddle the vertical portion and the horizontal portion of the foamed resin heat insulating material. And the horizontal portion are joined so as to be foldable .

Moreover, the invention according to claim 2 is the basic heat insulating structure according to claim 1 , wherein the upper edge portion connected to the upper portion of the vacuum heat insulating material body is sandwiched between the foamed resin heat insulating material and the floor material. It is.

  The invention according to claim 3 is the basic heat insulating structure according to claim 2, wherein an elastic airtight material that is compressively deformed is provided between the upper edge portion and the floor material.

  The present invention is a basic heat insulation structure for insulating a foundation of a building. The foundation has a rising portion that protrudes from the ground at a small height and surrounds the space under the floor. A heat insulating material is attached to the inner peripheral surface of the rising portion facing the underfloor space. Such a basic heat insulating structure can enhance the heat insulating property of the underfloor space.

  Further, the heat insulating material is formed of a laminated structure in which a foamed resin heat insulating material disposed on the rising portion side and a vacuum heat insulating material covering the under floor space side of the foamed resin heat insulating material are stacked. Such a heat insulating material is formed by stacking a vacuum heat insulating material having a higher heat insulating performance with a small thickness on a foamed resin heat insulating material, thereby greatly improving the heat insulating property of the underfloor space, and the thickness of the entire heat insulating material. Can reduce the size.

  In addition, since the foamed resin-based heat insulating material is disposed on the rising portion side of the vacuum heat insulating material, it is possible to suppress damage that is likely to occur at the time of attachment to the rising portion, and it is possible to suppress a decrease in heat insulating performance.

It is sectional drawing which shows the basic heat insulation structure of this embodiment. FIG. 2 is a perspective view of FIG. 1. (A) is sectional drawing explaining the process of arrange | positioning an upper part, (b) is sectional drawing explaining the process of arrange | positioning a vertical part. (A) is sectional drawing explaining the process of arrange | positioning a horizontal part, (b) is sectional drawing explaining the process of fixing a vacuum heat insulating material. (A) is sectional drawing explaining the process of fixing an elastic airtight material, (b) It is sectional drawing explaining the process of arrange | positioning a flooring. It is a side view of the heat insulating material of other embodiment. It is a side view which shows the state which laminated | stacked the several heat insulating material.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the present invention is a basic heat insulating structure for insulating a foundation 2 of a building B such as a house.

  The building B of this embodiment includes the foundation 2 that supports the base and walls of the building B, the floor material 3 on the first floor supported above the foundation 2, and the foundation 2 and the floor material 3. It has an underfloor space 5 partitioned between them. In the underfloor space 5, for example, a plurality of bundles 7 projecting upward from the ground G and a large pull 8 supported by the bundle 7 and supporting the floor material 3 are provided.

  The foundation 2 is continuously arranged on the outer periphery of the building B. The foundation 2 of the present embodiment includes a base portion 2A extending horizontally in the ground G, and a rising portion 2B extending upward from a substantially center in the width direction of the base portion 2A and protruding from the ground G at a small height. The cross section is formed in an inverted T shape. The rising portion 2B is disposed so as to surround the underfloor space 5.

  The rising portion 2B is provided with a base 9 fixed to the upper surface side thereof and an outer wall 10 fixed on the base 9. Moreover, the soil concrete 12 is laid on the ground G of the underfloor space 5 surrounded by the rising portion 2B.

  The basic heat insulating structure of the present embodiment includes a heat insulating material 11 attached to the under floor space 5 side of the base 2.

  The heat insulating material 11 covers the inner peripheral surface 2Bi of the rising portion 2B, and is continuously provided along the rising portion 2B. Such a heat insulating material 11 can suppress the heat exchange between the outdoor side So and the underfloor space 5 via the foundation 2, and can improve the heat insulating property of the underfloor space 5.

  The heat insulating material 11 of this embodiment is a laminated structure in which a foamed resin-based heat insulating material 15 disposed on the rising portion 2B side and a vacuum heat insulating material 16 covering the under-floor space 5 side of the foamed resin-based heat insulating material 15 are stacked. Consists of.

  Such a heat insulating material 11 is formed by superposing a vacuum heat insulating material 16 having a higher heat insulating performance with a smaller thickness than the foamed resin heat insulating material 15 on the foamed resin heat insulating material 15 as a whole. The heat insulation performance per unit thickness can be enhanced. Therefore, the heat insulating material 11 can greatly improve the heat insulating property of the underfloor space 5 with a small thickness. That is, the heat insulating material 11 can reduce the thickness W1a of the foamed resin heat insulating material 15 by the amount of the heat insulating property improvement by the vacuum heat insulating material 16. Thereby, the heat insulating material 11 can make the whole thickness W1 small compared with the past, for example, and can suppress the interference to the large pull 8 etc. in the underfloor space 5.

  In addition, since the heat insulating material 11 is provided with the foamed resin heat insulating material 15 on the rising portion 2B side, the vacuum heat insulating material 16 does not come into direct contact with the foundation 2 and is not generated when the rising heat is applied to the rising portion 2B. It is possible to suppress damage and to suppress a decrease in heat insulation performance. Moreover, since the vacuum heat insulating material 16 is exposed and arranged on the underfloor space 5 side, it can be easily confirmed from the underfloor space 5 side whether the degree of vacuum, which is a heat-insulating barometer, is maintained, and the maintainability is improved. Yes.

  The foamed resin-based heat insulating material 15 of the present embodiment includes a vertical portion 15A extending up and down along the rising portion 2B, an upper portion 15B extending from the vertical portion 15A along the upper surface of the rising portion 2B to the outdoor side So, A horizontal portion 15C extending from the lower end side of the vertical portion 15A along the ground G of the underfloor space 5 to the indoor side Si. For the vertical portion 15A, the upper portion 15B, and the horizontal portion 15C, for example, a plate-like body such as polystyrene foam, urethane foam, or phenol foam having excellent heat resistance and impact resistance is desirably employed.

  As shown in FIG. 2, the vertical portion 15 </ b> A is formed in a substantially rectangular plate shape that covers the inner peripheral surface 2 </ b> Bi of the rising portion 2 </ b> B in a side view as viewed from the underfloor space 5 side. As shown in FIG. 1, the vertical portion 15 </ b> A extends upward from the ground G along the inner peripheral surface 2 </ b> Bi of the rising portion 2 </ b> B, and its upper end terminates below the upper surface of the flooring 3. Thereby, the interference to the flooring 3 by the vertical portion 15A can be surely prevented, and the workability can be improved.

  Moreover, since the vacuum heat insulating material 16 is overlaid on the vertical portion 15A as described above, the thickness W1a can be made smaller than the conventional one (about 100 to 120 mm). Specifically, it is desirable that the thickness W1 of the vertical portion 15A is set to about 40 to 70 mm.

  The vertical portion 15A of the present embodiment includes a lower side portion 15Ad that abuts against the soil concrete 12 and a main body portion 15Ac that is disposed on the upper side of the lower side portion 15Ad so as to be separable. In the present embodiment, the main body portion 15Ac is fixed to the inner peripheral surface 2Bi of the rising portion 2B, while the lower side portion 15Ad is detachably disposed from the soil concrete 12 and the rising portion 2B. Thereby, lower part 15Ad can be removed and an ant-proofing agent etc. can be sprayed to the corner 17 of the rising part 2B and the soil concrete 12, and maintainability can be improved.

  The upper portion 15B is formed in a plate shape having a substantially rectangular cross section extending horizontally between the vertical portion 15A and the base 9. Such an upper portion 15B can suppress heat exchange between the outdoor side So and the underfloor space 5 between the rising portion 2B and the outer wall 10, and can enhance the heat insulation of the underfloor space 5.

  The horizontal portion 15C extends along the ground G on the soil concrete 12 from the vertical portion 15A side toward the indoor side Si. The horizontal portion 15C is also formed in a plate shape having a horizontally long cross section.

  The horizontal portion 15C of the present embodiment includes an outer portion 15Co that contacts the vertical portion 15A and an inner portion 15Ci that is disposed on the indoor side Si with respect to the outer portion 15Co in a separable manner. The inner portion 15Ci is fixed to the soil concrete 12, while the outer portion 15Co is detachably press-fitted from the soil concrete 12. As a result, the outer portion 15Co can be removed together with the lower portion 15Ad of the vertical portion 15A, and the termite-proofing agent or the like can be sprayed on the corners 17 so that the maintainability can be improved.

  As shown in FIG. 2, the vacuum heat insulating material 16 includes a core material 18 having a heat insulating property, and a pair of sheet materials 19 and 19 that seal the core material 18.

  The core member 18 of the present embodiment is formed in a substantially rectangular plate shape having a surface area that is the same as or slightly smaller than the vertical portion 15A in a side view as viewed from the underfloor space 5 side. The core material 18 is not particularly limited as long as it has excellent heat insulation and durability, but is preferably made of glass wool, silica powder, or the like.

  The pair of sheet materials 19 and 19 are made of, for example, a laminate film having a protective layer, a gas barrier layer, and a heat welding layer. The surface area of the pair of sheet materials 19 and 19 is set larger than the surface area of the core material 18.

  The pair of sheet materials 19 and 19 are vacuum-packed with the core material 18 interposed therebetween, so that the vacuum heat insulating material 16 has a vacuum heat insulating material in which the core material 18 is sealed with the pair of sheet materials 19 and 19. A main body 16A and an edge portion 16B formed on the outer peripheral portion of the vacuum heat insulating material main body 16A and in which the pair of sheet materials 19 and 19 are in close contact with each other are formed.

  Such a vacuum heat insulating material 16 can effectively reduce the thermal conductivity of the gas by keeping the inside of the vacuum heat insulating material main body 16A in a vacuum, with a small thickness W1b (shown in FIG. 1), Higher thermal insulation performance can be exhibited. The thickness W1b of the vacuum heat insulating material body 16A is preferably set to about 7 to 14 mm, for example.

  As shown in FIG. 1, the vacuum heat insulating material 16 of the present embodiment has an upper edge 16 </ b> Bu connected to the upper portion of the vacuum heat insulating material main body 16 </ b> A between the foamed resin heat insulating material 15 and the floor material 3. Is done. On the other hand, the lower edge portion 16Bd connected to the lower portion of the vacuum heat insulating material body 16A is sandwiched between the vertical portion 15A and the horizontal portion 15C of the foamed resin heat insulating material 15. Thereby, the vacuum heat insulating material 16 is stably disposed so that the vacuum heat insulating material main body 16A covers the underfloor space 5 side of the vertical portion 15A so as to be removable. The upper edge portion 16Bu and the lower edge portion 16Bd may be fixed by an adhesive, a double-sided tape, or the like.

  In the present embodiment, an elastic airtight material 20 that is compressively deformed is provided between the upper edge portion 16Bu and the flooring 3. The elastic airtight material 20 is formed in a plate shape having a substantially rectangular cross section, and is fixed across the edge 16Bu on the vacuum heat insulating material 16 and the vertical portion 15A of the foamed resin heat insulating material 15.

  Such an elastic hermetic material 20 can suppress the formation of a gap between the vertical portion 15 </ b> A and the floor material 3 by compressing and deforming between the upper edge portion 16 </ b> Bu and the floor material 3. Thereby, the elastic airtight material 20 can prevent reliably that air passes between the outdoor side So and the underfloor space 5, and can improve heat insulation effectively.

  Moreover, since the elastic airtight material 20 can absorb the impact from the flooring 3, it can improve the durability of the vacuum heat insulating material 16 which is weak against the impact from the outside. Further, since the elastic airtight material 20 is fixed across the upper edge portion 16Bu of the vacuum heat insulating material 16 and the vertical portion 15A of the foamed resin heat insulating material 15, the upper edge portion 16Bu is peeled off from the vertical portion 15A. Can be suppressed. The elastic airtight material 20 is not particularly limited, but for example, ethylene propylene diene rubber (EPDM), ethylene propylene rubber (EPM) or the like is preferably used.

Next, an example of the construction method of the basic heat insulation structure of this embodiment will be described. However, the present invention is not limited to such a construction method.
In the construction method of the present embodiment, the step S1 of attaching the foamed resin-based heat insulating material 15 to the rising portion 2B, the step S2 of fixing the vacuum heat-insulating material 16 to the foamed resin-based heat insulating material 15, and the elastic airtight material 20 up. The process S3 which fixes to the edge part 16Bu, and the process S4 which compresses and deforms the elastic airtight material 20 and arrange | positions the flooring 3 are included.

  In the step S1 of attaching the foamed resin heat insulating material 15, the step S11 of arranging the upper portion 15B of the foamed resin heat insulating material 15, the step S12 of arranging the vertical portion 15A, and the step of arranging the horizontal portion 15C. And S13.

  As shown in FIG. 3A, in step S11 for arranging the upper portion 15B, the upper portion 15B of the foamed resin-based heat insulating material 15 is brought into contact with the base 9 and fixed to the upper surface of the rising portion 2B. .

  In step S12 for arranging the vertical portion 15A, as shown in FIG. 3 (b), the lower side portion 15Ad of the vertical portion 15A is slightly press-fit into the corner 17 between the rising portion 2B and the soil concrete 12 so as to be removable. Placed in the state. Next, the main body portion 15Ac is disposed on the lower side portion 15Ad, and the main body portion 15Ac is fixed to the inner peripheral surface 2Bi of the rising portion 2B. Thus, the lower side portion 15Ad is detachably disposed while being sandwiched between the main body portion 15Ac and the soil concrete 12.

  In step S13 for arranging the horizontal portion 15C, as shown in FIG. 4A, the outer portion 15Co of the horizontal portion 15C is arranged in contact with the lower portion 15Ad of the vertical portion 15A. Next, the inner portion 15Ci is brought into contact with the outer portion 15Co and fixed to the upper surface of the soil concrete 12. Thus, the outer portion 15Co is detachably disposed between the lower portion 15Ad and the outer portion 15Co.

  In the step S2 for fixing the vacuum heat insulating material 16, as shown in FIG. 4B, after the lower edge portion 16Bd is inserted between the vertical portion 15A and the horizontal portion 15C, the vacuum heat insulating material main body is inserted. 16A is arranged on the inner surface of the vertical portion 15A of the foamed resin-based heat insulating material 15. Then, the upper edge portion 16Bu is bent to the outdoor side So and fixed to the upper surface of the vertical portion 15A. Thereby, the vacuum heat insulating material 16 is pinched so that lower edge part 16Bd can be removed.

  In the step S3 of fixing the elastic airtight material 20 of the present embodiment, as shown in FIG. 5A, the lower surface of the elastic airtight material 20 is fixed across the upper edge portion 16Bu and the vertical portion 15A. Is done.

  In the step S4 of arranging the flooring 3, as shown in FIG. 5B, the large pull 8 is disposed on the bundle 7 disposed in the underfloor space 5, the large pull 8, the elastic airtight material 20, The flooring 3 is placed on the base 9. Thereby, it can suppress that the elastic airtight material 20 compressively deforms and a clearance gap is formed between 15 A of vertical parts, and the flooring 3. FIG.

  Thus, in the construction method of this embodiment, since the above heat insulating materials 11 can be formed easily, workability can be improved.

  In the present embodiment, the foamed resin-based heat insulating material 15 and the vacuum heat insulating material 16 are attached at the construction site, but the present invention is not limited to this. For example, as shown in FIG. 6, the heat insulating material 11 may be pre-attached with a foamed resin heat insulating material 15 and a vacuum heat insulating material 16 in a factory or the like. Thereby, since the foaming resin-type heat insulating material 15 and the vacuum heat insulating material 16 are handled integrally, the heat insulating material 11 can improve the transportability from a factory to the field, and among the said construction methods, the vacuum heat insulating material 16 is used. The step S2 of fixing to the foamed resin heat insulating material 15 can be omitted, and the workability can be improved.

  In the present embodiment, the main body portion 15Ac and the lower side portion 15Ad of the foamed resin heat insulating material 15 are temporarily fixed with, for example, an adhesive tape (not shown). Moreover, the edge part 16Bu on the vacuum heat insulating material 16 is stuck on the upper end of the vertical part 15A. On the other hand, the lower edge portion 16Bd is fixed to the side surface of the outer portion 15Co of the horizontal portion 15C. Accordingly, the lower edge portion 16Bd is disposed across the main body portion 15Ac and the horizontal portion 15C of the vertical portion 15A, and the vertical portion 15A and the outer side portion 15Co are joined so as to be bent.

  Further, an elastic airtight material 20 is attached to the vertical portion 15 </ b> A and the edge 16 </ b> Bu above the vacuum heat insulating material 16. Thereby, since the heat insulating material 11 is handled as one body with the elastic airtight material 20, it can further improve transportability and workability.

  FIG. 7 shows the heat insulating material 11 in a folded state in which the vertical portion 15A and the outer portion 15Co of the horizontal portion 15C are bent and the vacuum heat insulating material 16 is sandwiched between the vertical portion 15A and the outer portion 15Co. In this folded state, the pair of heat insulating materials 11 and 11 face each other, and the outer portions 15Co and 15Co are overlapped with each other so that they are in contact with the vacuum heat insulating material body 16A of the heat insulating material 11 facing each other. .

  Thereby, since a pair of heat insulating materials 11 and 11 protect each vacuum heat insulating material main body 16A and 16A by being sandwiched between the vertical portion 15A and the outer portions 15Co and 15Co, during transportation to the site or in a warehouse It is possible to effectively prevent the vacuum heat insulating material 16 from being damaged during storage. Moreover, the heat insulating material 11 can be laminated | stacked in multiple steps in the up-down direction, and can improve a conveyance property and storage property.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

2B Rising part 5 Underfloor space 11 Heat insulating material 15 Foamed resin heat insulating material 16 Vacuum heat insulating material

Claims (3)

A foundation insulation structure that insulates the foundation of a building,
The foundation comprises a rising part that protrudes from the ground and surrounds the space under the floor,
A heat insulating material is attached to the inner peripheral surface of the rising portion facing the underfloor space,
The insulation is the rising portion side arranged foamed resin insulation Ri Do a laminated structure of repeating the vacuum heat insulating material covering the underfloor space side of the foamed resin insulation,
The foamed resin-based heat insulating material includes a vertical portion extending along the rising portion, and a horizontal portion extending from the vertical portion to the underfloor space side,
The vacuum heat insulating material has a vacuum heat insulating material body in which a core material is sealed with a pair of sheet materials, and an edge formed on the outer periphery of the vacuum heat insulating material body and the pair of sheet materials closely contacting each other. ,
The lower edge part connected to the lower part of the vacuum heat insulating material body is sandwiched between the vertical part and the horizontal part of the foamed resin heat insulating material,
The heat insulating material is formed by attaching the foamed resin heat insulating material and the vacuum heat insulating material, and the edge of the vacuum heat insulating material is connected to the vertical portion and the horizontal portion of the foamed resin heat insulating material. A basic heat insulating structure in which the vertical part and the horizontal part are joined so as to be foldable by being disposed across the board . The basic heat insulating structure according to claim 1 , wherein an upper edge portion connected to an upper portion of the vacuum heat insulating material main body is sandwiched between the foamed resin heat insulating material and a floor material . The basic heat insulating structure according to claim 2, wherein an elastic airtight material that is compressively deformed is provided between the upper edge and the floor material.

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