JP5327665B2 - External heat insulation method and external heat insulation structure for the outer wall of wooden buildings - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an external heat insulation method for an external wall of a wooden building, which can create a stable temperature environment in the room of the wooden building. <P>SOLUTION: In this external heat insulation method for the external wall 1 of the wooden building in which a plurality of wooden columns 4 are erected at spacings, a thermal storage element 7 is arranged between the columns 4; and a heat insulating material 8 is arranged on the outdoor side of the thermal storage element 7. The thermal storage element 7, which is a cement-based extruded plate formed by extrusion molding, has a hollow part 7a which is elongated in the direction of extrusion. Plywood 11 for connecting the adjacent columns 4 together is arranged between the thermal storage element 7 and the heat insulating material 8. The cement-based extruded plate as the thermal storage element 7 is fixed to the plywood 11 by means of a metal fitting 12 which is inserted through the hollow portion 7a. Additionally, the thermal storage element 7 and the heat insulating material 8 are arranged at a spacing, so that an air space 15 can be constituted between the thermal storage element 7 and the heat insulating material 8. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an outer heat insulating method and an outer heat insulating structure for an outer wall of a wooden building. In particular, the present invention relates to an outer heat insulating method and an outer heat insulating structure capable of creating a stable temperature environment in a room of a wooden building.

  Conventionally, an outer heat insulating method is known as a heat insulating method for a building. In this outer heat insulation method, a heat insulating material is provided on the outer periphery of the outer wall so that the heat stored in the inner casing is directed to the room without escaping outside.

  When this exterior heat insulation method is applied to a concrete building with a large heat capacity, the amount of heat stored in the concrete frame located inside the heat insulating material is large due to the large heat capacity of the concrete. A stable temperature environment can be created in the room. For this reason, the outer insulation method is widely used in concrete construction as an effective method for energy saving measures and prevention of condensation.

  On the other hand, in a wooden building, a heat insulation method called a filling heat insulation method or an external heat insulation method is mainly adopted. In the heat insulation method for filling, as disclosed in Patent Document 1, fiber-based heat insulating material such as glass wool is filled between the columns constituting the outer wall, and in the heat insulating method for outer covering, as disclosed in Patent Document 2. A plate-like heat insulating material such as expanded polystyrene is attached to the outside of the column.

JP 09-235794 A Japanese Patent Laid-Open No. 2002-070197

  By the way, since the heat insulation method does not install a heat insulating material outside the pillar, the heat stored in the pillar is released to the outdoors. For this reason, the filling insulation method does not effectively use the heat stored in the pillars to create a stable temperature environment.

  Also, in the heat insulation method for the outer cover, as in the case of the heat insulation method for the outside, the heat stored in the pillar is directed indoors by installing a heat insulating material on the outside of the pillar. However, the external heat insulation method does not exhibit the same effect as the above-mentioned external heat insulation method due to the small heat capacity of the wood constituting the pillar. That is, since the heat stored in the pillar is smaller than that of concrete because of the small heat capacity, even if the heat stored in the pillar is released into the room, a stable indoor temperature environment cannot be created. For this reason, the external heat insulation method cannot be an effective energy saving measure for wooden buildings, and causes a problem that the building materials corrode due to condensation.

  An object of the present invention is to provide an outer heat insulating method and an outer heat insulating structure in an outer wall of a wooden building, which can create a stable temperature environment in the room of the wooden building.

The outer heat insulating method for the outer wall of a wooden building according to the first aspect of the present invention is an outer heat insulating method for the outer wall of a wooden building in which a plurality of wooden columns are provided at intervals, and a heat storage body between the columns. Is disposed, and a heat insulating material is disposed outside the heat storage body and the column .

  Preferably, the heat storage body is a brick, a concrete plate, or a concrete block.

  Preferably, the heat storage body is a cement-based extruded plate formed by extrusion molding, and has a hollow portion extending in the extrusion direction.

  Preferably, a plywood connecting adjacent pillars is disposed between the heat storage body and the heat insulating material, and the cement-based extruded plate is fixed to the plywood by a metal fitting inserted through the hollow portion. Features.

  Preferably, an air layer is formed between the heat storage body and the heat insulating material by disposing the heat storage body and the heat insulating material at an interval.

The outer heat insulating structure in the outer wall of the wooden building according to the second aspect of the present invention is an outer heat insulating structure in the outer wall of the wooden building in which a plurality of wooden columns are erected at intervals, and is arranged between the columns. And a heat insulating material disposed on the outdoor side of the pillar and the pillar .

  Preferably, the heat storage body is a brick, a concrete plate, or a concrete block.

  Preferably, the heat storage body is a cement-based extruded plate formed by extrusion molding, and has a hollow portion extending in the extrusion direction.

  Preferably, a plywood connecting adjacent pillars is disposed between the heat storage body and the heat insulating material, and the cement-based extruded plate is fixed to the plywood by a metal fitting inserted through the hollow portion. Features.

  Preferably, an air layer is formed between the heat storage body and the heat insulating material by disposing the heat storage body and the heat insulating material at an interval.

  According to the present invention, the heat storage body is disposed between the pillars constituting the outer wall of the wooden building, and the heat insulating material is disposed on the outdoor side of the heat storage body, so that the influence of the outside air temperature on the indoor environment is affected. In addition to being kept small, the heat stored in the heat storage body can be directed indoors without escaping outside. As a result, a stable temperature environment can be surely created in the room, so that effective energy saving measures can be taken, and the effect of external heat insulation can be exerted such that dew condensation occurring on the pillars can be kept small.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

  FIG. 1 is a perspective view showing a structure of an outer wall 1 of a wooden building to which an outer heat insulating method according to an embodiment of the present invention is applied, and FIG. 2 is a horizontal section cut along the line AA shown in FIG. FIG. 3 is a vertical sectional view taken along line BB shown in FIG.

  The outer wall 1 is an outer wall of a wooden building constructed by a frame construction method, and includes a lower horizontal member 2, an upper horizontal member 3 (see FIG. 3), and a plurality (only two are shown in FIGS. 1 and 2). ) Pillar 4.

  The lower horizontal member 2 is installed on a concrete foundation (not shown) or the like, and the upper horizontal member 3 is disposed above the lower horizontal member 2.

  The plurality of columns 4 are erected with a space between the lower horizontal member 2 and the upper horizontal member 3, and connect the lower horizontal member 2 and the upper horizontal member 3, respectively.

  The body edge 5 is attached to both sides of the column 4 with nails. The trunk edge 5 is erected along the outdoor area on the side surface of the pillar 4, and the pillar 4 and the trunk edge 5 form a step 6 that is recessed from the indoor side surface 4 a of the pillar 4 to the outdoor side by a predetermined height. Has been.

  A plurality of heat storage members 7 are stacked between adjacent columns 4, and a heat insulating material 8 is disposed on the outdoor side of the heat storage members 7.

  The heat storage body 7 is a cement-based extruded plate (hereinafter referred to as a cement-based extruded plate 7) formed by extrusion molding, and has a hollow portion 7a extending in the extrusion direction during molding. The cement-based extruded plate 7 is stretched between adjacent columns 4 so that both ends 7b in the extrusion direction engage with the step 6 (in this state, the hollow portion 7a extends in the horizontal direction). The thickness of the cement-based extruded plate 7 is formed so as to coincide with the height of the step 6, and when the cement-based extruded plate 7 is stretched as described above, as shown in FIG. The indoor-side surface 7c of the extruded plate 7 and the indoor-side surface 4a of each column 4 have the same surface position, and a continuous flat surface is constituted by these surfaces 7c, 4a. And the interior material 9 (refer FIG.2, 3) is affixed on this flat surface with an adhesive so that the whole surface may be covered.

  The heat insulating material 8 is composed of a plate material such as polystyrene foam or urethane foam, and is arranged so as to wrap the entire wooden building outside the pillar 4, and on the outdoor surface 8 a (see FIGS. 2 and 3). The exterior material 10 is affixed with an adhesive.

  A wooden plywood 11 is disposed between the cement-based extruded plate 7 and the heat insulating material 8. The plywood 11 is nailed to each pillar 4 to connect the adjacent pillars 4. And the cement-type extrusion molding board 7 is fixed to the plywood 11 by using the metal fitting 12, and the heat insulating material 8 is affixed on the outdoor side surface 11a (refer FIG.2, 3) of the plywood 11 with an adhesive agent.

  As shown in FIGS. 2 and 3, the metal fitting 12 includes a bolt 13 and a nut 14. The bolt 13 has a threaded portion 13a that is passed through the through-hole formed in the plywood 11 and the cement-based extruded plate 7 from the outdoor side, so that the head 13b is positioned on the outdoor side of the plywood 11, and the threaded portion 13a. Is inserted into the hollow portion 7 a of the cement-based extruded plate 7. The nut 14 is fastened to the tip of the screw portion 13a. As a result, the cement-based extruded plate 7 is pressed toward the plywood 11 (outside), and both ends 7a thereof are in close contact with the body edge 5 and the column 4 without a gap.

  In the state where the cement-based extruded plate 7 is fixed to the plywood 11 by the metal fitting 12 as described above, the air layer 15 corresponding to the width of the trunk edge 5 is interposed between the cement-based extruded plate 7 and the heat insulating material 8. Is formed. The air layer 15 has a height in the vertical direction from the upper surface 2a of the lower horizontal member 2 to the lower surface 3a of the upper horizontal member 3 as shown in FIG.

  According to the present embodiment, the heat storage body 7 is disposed between the pillars 4 and the heat insulating material 8 is disposed on the outdoor side of the heat storage body 7, thereby suppressing the influence of the outside air temperature on the indoor environment. In addition, the heat stored in the heat storage body 7 can be directed indoors without escaping outside. Thereby, since a stable temperature environment can be reliably created in the room, effective energy saving measures can be taken, and the effect of external heat insulation such that condensation generated in the building materials in the room such as the pillars 4 can be suppressed. And since the cement-type extrusion molding board 7 which has a large heat capacity and a high heat storage property is used as the heat storage body, a stable temperature environment can be created in the room with certainty, so the effect of the above-mentioned external heat insulation is remarkably exhibited. .

  Moreover, since the mass of the cement-type extrusion molding board 7 is large, since the outdoor noise is prevented from propagating into the room, the sound insulation of the outer wall is improved. Further, since the cement-based extruded plate 7 has high rigidity, the interlayer deformation angle is suppressed by the horizontal resistance of the cement-based extruded plate 7, so that the rigidity of the outer wall is improved. For this reason, the earthquake resistance of an outer wall improves, without requiring reinforcements, such as a brace. In connection with the above-mentioned, by using the cement-type extrusion molding board 7 as a thermal storage body, the sound insulation effect and the earthquake-proof effect are obtained simultaneously with the effect by the above-mentioned external heat insulation.

  In addition, since the heat storage body 7 is arranged between the pillars 4, the heat storage body 7 is left in a state in which a finished part of the outer periphery of the wall such as an exterior material is left in an existing wooden building where the heat storage body 7 is not installed. Can be incorporated. Therefore, the effect by the above-mentioned outside heat insulation, the sound insulation effect, and the earthquake resistance effect can be obtained by performing simple reconstruction work on the existing wooden house.

  Moreover, since the plywood 11 is provided so as to connect the adjacent pillars 4, the rigidity of the outer wall is further improved. Further, since the cement-based extruded plate 7 is fixed to the plywood 11, there is no need to separately provide a support member for the dedicated cement-based extruded plate 7. Thereby, the construction cost can be reduced.

  Moreover, the cement-type extrusion molding board 7 is excellent in heat insulation by having the hollow part 7a. For this reason, the influence of the indoor environment due to the outside air temperature can be further reduced. And since this hollow part 7a is effectively utilized as a space for installing a part of the metal fitting 12 (nut 14), it is advantageous in obtaining a high degree of design freedom.

  Moreover, since the air layer 15 is comprised between the heat storage body 7 and the heat insulating material 8, the influence of the outside air temperature on the indoor environment can be further reduced.

  In addition, this invention is not limited to embodiment mentioned above, A various change can be made in a claim.

  For example, in the above embodiment, the cement-based extruded plate 7 is horizontally stretched between the columns 4, but the cement-based extruded plate 7 may be vertically stretched between the columns 4 (in this state, the cement-based extruded plate 7). The hollow portion 7a of the extruded plate 7 extends in the vertical direction).

Moreover, you may comprise the heat insulating material 8 by spraying urethane on the outdoor side surface 11a of the plywood 11. FIG. Even if it does in this way, since the heat insulating material 8 will be arrange | positioned in the outdoor side rather than the thermal storage body 7, the heat | fever stored in the cement-type extrusion molding board 7 will be discharged | emitted indoors, without escaping outside. .

  The cement-based extruded plate 7 may be adhered to the surface of the trunk edge 5 constituting the step 6 with an adhesive or the like. By doing in this way, since the plywood 11 can be abbreviate | omitted, reduction of a member score is achieved. When the plywood 11 is omitted, the heat insulating material 8 is bonded to or sprayed on the outdoor surface of the column 4.

  Moreover, the heat storage body 7 can be comprised not only with a cement-type extrusion molding board but with all building materials which have a larger heat capacity than the wooden building materials which comprise a pillar, such as a brick, a concrete board, and a concrete block. Also in this case, since the building material having a larger heat capacity than that of the pillar 4 is disposed inside the heat insulating material 8, it is possible to obtain the effect of larger heat insulation than the conventional outer heat insulating method. Further, by using a brick, concrete plate or concrete block having a large mass and high rigidity as the heat storage body 7, the sound insulation effect and the earthquake resistance effect are obtained as well as the effect of the external heat insulation as in the case of using the cement-based extruded plate. be able to.

  Moreover, when the concrete block which has a hollow part is used as the thermal storage body 7, the influence of the indoor environment by external temperature can be restrained small by the heat insulation function of the hollow part.

  In the above embodiment, a heat insulating material may be disposed in the space between the heat insulating material 8 and the heat storage body 7 constituting the air layer 15. Even if it does in this way, the space between the heat insulating material 8 and the thermal storage body 7 is used effectively in order to suppress the influence by external temperature small.

  Further, the interior material 9 (see FIGS. 2 and 3) may be attached only to the indoor surface 7 c of the cement-based extruded plate 7 without being attached to the indoor surface 4 a of the column 4. By doing in this way, the indoor external appearance which the pillar 4 exposes is obtained. In this case, the thickness of the cement-based extruded plate 7 is set to be smaller than the height of the step 6 by about the thickness of the interior material 9.

  In addition, the present invention can be applied to any wall in which a plurality of columns are erected at intervals by arranging a heat storage body between columns and arranging a heat insulating material on the outdoor side of the heat storage body. For this reason, this invention is applicable also to the wall constructed | assembled by the frame construction method, and the wall of a lightweight steel-framed house other than the wall comprised by the shaft construction method shown in the said embodiment.

It is a perspective view which shows the outer wall of the wooden building to which the outer heat insulation construction method in embodiment of this invention was applied. It is the horizontal sectional view cut | disconnected by the AA line shown in FIG. It is the vertical sectional view cut | disconnected by the BB line shown in FIG.

Explanation of symbols

1 Outer wall 4 Pillar 7 Heat storage body (cement-based extruded plate)
7a Hollow part 8 Heat insulating material 11 Plywood 12 Metal fitting 15 Air layer

Claims (10)

It is an outer heat insulation method on the outer wall of a wooden building where a plurality of wooden pillars are erected at intervals,
An outer heat insulating method, wherein a heat storage body is disposed between the pillars, and a heat insulating material is disposed outside the heat storage body and the pillars .   The outer heat insulation method according to claim 1, wherein the heat storage body is a brick, a concrete plate, or a concrete block.   The outer heat insulation method according to claim 1, wherein the heat storage body is a cement-based extruded plate formed by extrusion and has a hollow portion extending in an extrusion direction. Between the heat storage body and the heat insulating material, a plywood connecting adjacent columns is arranged,
The outer heat insulating construction method according to claim 3, wherein the cement-based extruded plate is fixed to the plywood by a metal fitting inserted into the hollow portion.   5. The air layer is formed between the heat storage body and the heat insulating material by arranging the heat storage body and the heat insulating material at an interval, according to any one of claims 1 to 4. The outer insulation method described. It is an outer heat insulating structure on the outer wall of a wooden building in which a plurality of wooden pillars are erected at intervals,
A heat storage body disposed between the pillars;
A heat insulator disposed on the outdoor side of the heat storage body and the pillar ; and
An outer heat insulating structure characterized by comprising:   The outer heat insulating structure according to claim 6, wherein the heat storage body is a brick, a concrete plate, or a concrete block.   The outer heat insulating structure according to claim 6, wherein the heat storage body is a cement-based extruded plate formed by extrusion and has a hollow portion extending in an extrusion direction. Between the heat storage body and the heat insulating material, a plywood connecting adjacent columns is arranged,
The outer heat insulating structure according to claim 8, wherein the cement-based extruded plate is fixed to the plywood with a metal fitting inserted into the hollow portion.   10. The air layer is formed between the heat storage body and the heat insulating material by arranging the heat storage body and the heat insulating material at an interval, according to claim 6. The outer insulation structure described.

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