JPH11131615A - Heat insulating wall structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulating structure of a building by which the wall structure can be kept from being increased in thickness, the heat insulating construction can be facilitated, and during cooling and heating operation, dew condensation can be prevented to prevent humidity from being retained in the wall. SOLUTION: An exterior backing material 13 is fitted to the outdoor side A of intermediate posts 12 and posts 11, a damp proofing material 17 which is impermeable to water is stuck to the interior side B to fit an interior backing material 18, and a foam heat insulating material 14 which is filled through a filling hole 15 and foamed is provided in the respective space parts 19 surrounded with the post materials 11, 12, the exterior backing material 13 and the damp proofing material 17. Thus, during cooling and heating operation, the interior side B air in which humid air exists is kept from being moved from the damp proofing material 17 to the outdoor side A to prevent dew condensation, and any increase in thickness of the heat insulating wall can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating wall structure for a building, which prevents dew condensation during cooling and heating and prevents moisture from being retained in the wall.

[0002]

2. Description of the Related Art In recent years, with the widespread use of cooling and heating equipment, various measures have been taken to insulate the wall structure of a building. As shown in FIG. 4 (a), the studs 2 provided between the pillars 1 are used to attach the exterior base material 3 to the outdoor side A and the interior base material 4 to the indoor side B. Glass wool is disposed as a heat insulating material 5 between the material 3 and the interior base material 4, and the panel construction method can also be used as shown in FIG.
As shown in FIG. 3, similarly, glass wool is filled in the panel 6 as the heat insulating material 7 so that the panels 6 are arranged to form a wall structure, and the heat between the outdoor side A and the indoor side B is formed by the heat insulating materials 5 and 7. To minimize the transition.

However, during cooling and heating, a temperature difference occurs between the front and back of the glass wool, which is the heat insulating material 5, 7, and the moisture permeability is small, so that depending on the temperature and humidity conditions, dew condensation may occur on the inside and the front and back of the heat insulating material 5, 7. Occurs.

[0004] Moisture due to such condensation is adsorbed on the glass wool and is released during the dry season, but is extremely difficult to escape, and there is a problem that the water is accumulated and heavier for a long period of time and the glass wool slips off. Moisture promotes the generation of mold and the corrosion of structural materials, causing a problem of lowering the sanitary environment and shortening the life of buildings.

[0005] Therefore, instead of glass wool, a synthetic resin foam having low hygroscopicity has been used as a heat insulating material, and a panel filled and foamed at a factory or filled and foamed on site has been used. I have.

[0006]

However, even when such a synthetic resin foam is used as a heat insulating wall, the studs 2 and the pillars 1 serving as joints of the interior base material 4 or the panels 6 are joined together. There is a problem in that the heat insulation performance of the joint portion is low, and heat and moisture move from the gap in this portion, thereby causing dew condensation.

For this reason, the joint portion of the interior base material 4 and the joint portion of the panel 6 are sealed with a tape 8 or a caulking agent. If wallpaper or the like is applied, a step is formed and the aesthetic appearance is impaired. Therefore, a base material must be further provided thereon, and there is a problem that the thickness of the wall structure increases.

On the other hand, dew condensation occurs when the air is cooled below the saturation temperature of the air in the presence of the humid air. Condensation does not occur. Conversely, even in a cooled state, no condensation occurs unless there is moist air.

The present invention has been made in view of the above-mentioned problems of the prior art, and makes it possible to easily perform heat insulation and prevent dew condensation during cooling and heating without increasing the wall structure without increasing the wall structure. It is an object of the present invention to provide a heat insulating wall structure of a building that can prevent possession.

[0010]

According to a first aspect of the present invention, there is provided a heat insulating wall structure for a building, in which an exterior member is mounted on an outdoor side of a plurality of pillars of the building. The interior member is attached to the indoor side of the plurality of pillar members via a moisture barrier, and the space formed by the moisture barrier and the exterior member is filled from a filling hole in an intermediate portion of the adjacent pillar pillar. It is characterized by providing a heat insulating material.

Here, the column material includes columns and studs. The exterior member is a plate material attached to the outdoor side of the pillar, and refers to an exterior base material, or an exterior material when the exterior base material is omitted. The interior member is a plate material attached to the pillar, and an interior base material. Or, refers to the interior plate and the like when the interior base material is omitted, the material of these exterior members and interior members is not particularly limited, as long as it can support the pressure at the time of filling on site, Normally used ones can be used.

The moisture-proof material refers to a sheet material that does not transmit moisture, and various commercially available synthetic resin sheets and the like can be used. Examples thereof include polyethylene, polypropylene, polystyrene, polyvinyl chloride, polycarbonate, polyamide, polyester, and the like. A sheet made of polyethylene terephthalate (PET) or the like can be used.

As the heat insulating material, a heat insulating material that can be filled through the filling port is used, and as the synthetic resin foam, rigid polyurethane foam, polyisocyanurate foam,
Phenol form, polystyrene foam, ABS foam, polyethylene foam, polypropylene foam, polyolefin foam, EVA foam, PVC
Foam, urea foam, epoxy foam, polyester foam, foam rubber, etc. are used,
Rigid polyurethane foams, polyisocyanurate foams, and phenol foams that can be filled and foamed on site are preferable, and particularly, an interconnected rigid polyurethane foam having a low foaming pressure is suitable.

According to this heat insulating wall structure of a building, an exterior base material or an exterior material is attached to the outdoor side of a pillar member such as a stud or a pillar, and a moisture-proof material that does not allow moisture to permeate is adhered to the interior side of the interior base material. An interior material is attached, and a heat insulating material filled from a filling hole at an intermediate portion on the outdoor side or the indoor side is provided in each space surrounded by the pillar member, the exterior member and the moisture proof material, and the moist air during cooling and heating is provided. The existing indoor air is prevented from moving from the interior member to the outside to prevent dew condensation, and also prevents the heat insulation wall from becoming thick.

According to a second aspect of the present invention, there is provided a heat insulating wall structure for a building, wherein the filling hole is formed by penetrating an exterior member on the outdoor side and is filled and foamed. It is characterized by providing a foam heat insulating material.

According to this heat insulating wall structure of a building, a filling hole is formed in an exterior base material or an exterior material to fill and foam the foamed heat insulating material. Can be performed, and the foaming of the foamed heat insulating material can be performed even after the interior material is installed.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 and FIG. 2 are a cross-sectional view and a partial perspective view, partially cut away, of an embodiment of a heat insulating wall structure of a building according to the present invention.

In the heat insulating wall structure 10 of this building, the pillars 11
An exterior base material 13 as an exterior member is attached to the outdoor side A by using the studs 12 arranged at regular intervals between the studs 12, for example, three studs 12 or two studs 12 arranged at a pitch of 450 mm. And 900m using one pillar 11
An exterior base material 13 having a width of m is arranged, and attached so that the joints are formed on the studs 12 and the like at both ends. The material of the exterior base material 13 is not particularly limited, and a conventionally used material such as a plastic board (a hard urethane board or a styrene board) or a plywood can be used.

As shown in FIG. 2, the exterior base material 13 has a central portion of the pitch of the studs 12 (a central portion in the width direction) or a central portion of the pitch between the studs 12 and the pillars 11 (a central portion of the pitch in the width direction). ) Are formed at intervals above and below through holes 15 for filling the foam insulation material 14. For example, in the case of an exterior base material having a length of 1800 mm in the vertical direction, a pitch of 500 mm from the lower end is used. To form three filling holes 15,
In one piece of the exterior base material 13 having a width of 900 mm, a total of six filling holes 15 are formed.

The exterior base material 13 has a filling hole 1
5, a confirmation hole 16 is formed to confirm the filling state of the foamed heat insulating material 14 to be filled and foamed. For example, the stud 12 is 200 to 300 mm below the filling hole 15 of the exterior base material 13.
Alternatively, two confirmation holes 16 are formed inside the pillar 11, and one exterior base material 13 has a total of 12 confirmation holes 16.

The filling hole 15 and the confirmation hole 16 are
It may be formed after mounting on the stud 1 or the stud 12, or may be formed in advance. The size of these holes is preferably about 5 to 15 mm in diameter, and the number is not limited to the above example. The more the better, the better the strength
It is desirable to make the hole as small as about mm.

On the other hand, on the indoor side B of the pillars 11 and the studs 12, after attaching a moisture proof material 17, an interior base material 18 as an interior member is attached.

The moisture-proof material 17 is for preventing moisture from moving from the indoor side B to the outdoor side A, which is in a high humidity state during heating in winter when dew condensation is a problem. For example, a polyethylene sheet is used. The roll-shaped material is fixed to the pillar 11 or the stud 12 while being unwound, and is mounted in a state of being continuous in the lateral direction so as to minimize joints.

Then, the moisture-proof material 17 continuous in the lateral direction is provided.
The interior base material 18 is attached to the indoor side B using the pillars 11 and the studs 12. The interior base material 18 also includes
There is no particular limitation, and a conventionally used gypsum board, synthetic resin board, plywood, or the like can be used.
Joints are arranged and mounted on the studs 1 and the studs 12.

As a result, the space 19 between the pillars 11 and the studs 12 or the space 19 between the pillars 12 is formed between the exterior base material 13 on the outdoor side A, the moisture-proof material 17 on the indoor side B, and the interior base material 18. And the space 1
The foamed heat insulating material 14 is filled and foamed from the filling holes 15 communicating with 9.

The foam insulating material 14 is provided at the lowermost filling hole 1.
The nozzle is inserted from 5 and filling is performed while changing the direction so that the tip of the nozzle is turned from the lower corner of one end to the lower corner of the other end, and the filling state is confirmed by the confirmation hole 16. Then, the foamed heat insulating material 14 is filled and foamed in each of the lowermost filling holes 15 while moving in the horizontal direction, and then the filling holes 15 in the upper stage are filled.
Filling and foaming the entire space 19 while moving in a meandering manner.

In this embodiment, a filling hole and a confirmation hole are formed in the exterior base material so that the foam insulation material is filled and foamed from the outdoor side. However, a space is formed from the indoor side to the interior base material and the moisture-proof material. A filling hole and a confirmation hole penetrating the part may be formed to fill and foam the foamed heat insulating material from the indoor side,
By forming a filling hole etc. in the center of the pitch of the studs, sufficient heat insulation performance can be ensured, and parts with low heat insulation performance, such as wood, where conventional joints and joints are located on pillars It is not a problem that heat and moisture move in a concentrated manner.

After the filling and foaming, the filling hole 15 and the confirmation hole 16 are closed with a tape or a caulking agent, if necessary.

An exterior base material 13 is attached to the outdoor side A of the pillar 11 and the stud 12, and an interior base material 18 is attached to the indoor side B via a moisture-proof material 17. In the heat insulating wall structure 10 in which the material 14 is filled and foamed, the filling hole 15 and the confirmation hole 16
Is covered with a tape or a caulking agent, and an outer wall material such as a metal siding, an ALC plate, or a ceramic plate is attached to a joint portion of the exterior base material 13, for example. Interior materials such as wallpaper, wall boards, and painted walls are attached to the interior.

According to such a heat insulating wall structure 10, since the moisture-proof material 17 such as a polyethylene sheet is disposed on the indoor side of the foam heat-insulating material 14, heat is transferred through the moisture-proof material 17, but the humidity is reduced. The movement is prevented by the moisture proof material 17.

As a result, for example, during winter heating when dew condensation is the most problematic, the temperature difference between the outside air and the room is large, and the source of moisture is indoors, as shown in FIG. 3 (a). Although the movement of moisture occurs from the indoor side B to the outdoor side A, the moisture does not move into the inside of the foamed heat insulating material 14 due to the moisture proof material 17, and the temperature difference (temperature gradient) between the inside and the outside in the part of the interior base material 18. Is small, and the humid indoor air is not cooled below the saturation temperature, so that dew condensation can be prevented.

On the other hand, during cooling in summer,
As schematically shown in (b), the humidity moves from the outside air to the indoor side, but the temperature difference does not increase as much as in winter,
Also, due to the moisture permeability resistance, dew condensation on the surface of the foamed heat insulating material 14 on the indoor side B hardly occurs.

As described above, the heat insulating wall structure 1 of this building
0, the foam insulation 1 on the outdoor side A of the interior base material 18
By arranging the moisture proof material 17 between the inner base material 4 and the inner base material 18 where the humid air exists, the temperature difference between the interior base material 18 and the moist air can be prevented. By reducing the size by the heat insulating material 14, dew condensation can be prevented, and movement of heat and moisture from joints of the interior base material can be prevented as much as possible.

Accordingly, it is not necessary to seal the joint portion of the interior base material 18 with a tape or a caulking agent, so that a flat surface can be maintained. Is not too thick.

Further, a filling hole 15 and a confirmation hole 16 are formed in the exterior base material 13 and the foamed heat insulating material 14 is filled from the outdoor side A, so that the interior is placed on the interior base material 18 in parallel with the filling operation. Interior such as pasting materials can be constructed.

[0036]

According to the heat insulating wall structure of a building according to the first aspect of the present invention, as described above in detail with reference to one embodiment, an exterior base material is provided on the outdoor side of a pillar member such as a stud or a pillar. Attach the interior base material and the interior material by attaching a moisture-proof material that does not allow moisture to permeate to the indoor side, and install the exterior or indoor side in the space surrounded by this pillar member and the exterior member and the moisture-proof material Since the heat insulating material filled from the filling hole in the middle part of the is provided, it is possible to prevent dew condensation by preventing the indoor air where moist air is present during cooling and heating from moving from the interior member to the outdoor direction. In addition, it is possible to prevent the heat insulation wall from becoming thick.

Further, according to the heat insulating wall structure of a building according to the second aspect of the present invention, a filling hole is formed in the exterior base material and the exterior material to fill and foam the foamed heat insulating material. The filling and foaming work of the foamed heat insulating material can be performed in parallel with the installation of the foamed heat insulating material, and the foaming and heat insulating material can be filled and foamed even after the installation of the interior material.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an embodiment of a heat insulating wall structure of a building according to the present invention.

FIG. 2 is a partially cutaway perspective view showing a heat insulating wall structure of a building according to an embodiment of the present invention;

FIG. 3 is an explanatory diagram of a temperature distribution during heating in winter and cooling in summer according to an embodiment of the heat insulating wall structure of a building of the present invention.

FIG. 4 is a cross-sectional view of a conventional heat insulating wall structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Heat insulation wall structure of a building 11 Column (post material) 12 Stud (post material) 13 Exterior base material (exterior member) 14 Foam insulation material 15 Filling hole 16 Confirmation hole 17 Moisture proof material 18 Interior base material (interior member) 19 Space Part A Outdoor side B Indoor side

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Ryuichi Komori 1021-33, Ohashi-cho, Sano-shi, Tochigi (72) Inventor Masanori Kimura 1-3-12-6-6, Tomei, Tomei, Bibai-shi, Hokkaido (72) Inventor, Kazuo Sasaki Bibai City, Hokkaido

Claims (2)

[Claims] An exterior member is mounted on the outdoor side of a plurality of pillars of a building, and an interior member is mounted on the indoor side of the plurality of pillars via a moisture-proof material. A heat-insulating wall structure for a building, wherein a heat-insulating material filled from a filling hole in an intermediate portion of the adjacent pillar material is provided in each of the formed space portions. 2. A heat insulating wall structure for a building according to claim 1, wherein said filling hole is formed by penetrating an exterior member on the outdoor side, and is provided with a foam heat insulating material which is filled and foamed.