JP4190443B2 - Outside insulation method and insulation wall structure - Google Patents

Description

  The present invention relates to an outer heat insulating method and a heat insulating wall structure, and more specifically, for example, an outer heat insulating method and a heat insulating wall for constructing a heat insulating panel through a heat insulating layer on the outside of a frame wall in repairing the outer wall of a refrigerator / freezer warehouse or the like. Concerning structure.

  Conventionally, as this type of external heat insulation method, for example, as shown in FIG. 7, a foam heat insulating material is sprayed on the surface of a building wall 30 of a building to form a vertical heat insulating layer 31. There is a construction method in which the heat insulation panels 32 are assembled at intervals, and the foam heat insulation is intermittently laminated and foamed from the lower side between the vertical heat insulation layers 31 and the heat insulation panels 32 to form the laminated heat insulation layers 33 (for example, Patent Documents). 1).

Japanese Patent Laid-Open No. 11-13160

However, in the outer heat insulation method in which the foamed heat insulating material is laminated and foamed between the vertical heat insulating layer 31 and the heat insulating panel 32 to form the laminated heat insulating layer 33, high foaming is generated in the heat insulating panel 32 when the foamed heat insulating material of the laminated heat insulating layer 33 is foamed. Since pressure is applied to cause the heat insulation panel 32 to be deformed to bulge away from the housing wall 30, as a measure for preventing this deformation, for example, the length of one heat insulation panel 32 is shortened, It is conceivable to increase the strength of the heat insulation panel 32 itself by increasing the thickness. However, when the length dimension of the heat insulation panel 32 is shortened, a trunk edge (not shown) attached for assembling the thermal insulation panel 32 to the casing wall 30 and a trunk edge fixing member (which fixes the trunk edge to the casing wall 30 ( It is necessary to set the arrangement interval of the heat insulation panel base material narrowly (not shown), and the amount of the heat insulation panel base material increases accordingly, resulting in an increase in material cost and construction cost. Since the weight of the heat insulating panel 32 is increased, there is a problem that the construction becomes difficult and the material cost increases.
In addition, the foamed heat insulating material forming the laminated heat insulating layer 33 requires a necessary amount to fill the space between the vertical heat insulating layer 31 and the heat insulating panel 32, so that the amount of use is extremely large and the cost is increased. It was.

  The present invention has been made to solve such problems, and the object of the present invention is to prevent bulging deformation of the heat insulation panel without almost applying the foaming pressure of the foam heat insulation material to the heat insulation panel. Another object of the present invention is to provide an outer heat insulating method and a heat insulating wall structure capable of forming a heat insulating layer having a high heat insulating property between a housing wall and a heat insulating panel by reducing the amount of foam heat insulating material used.

  In order to achieve the above object, the outer heat insulating method of the present invention is an outer heat insulating method in which a heat insulating panel is constructed on the outer side of the housing wall via a heat insulating layer, and foam heat insulating material is sprayed on the outer surface of the housing wall to foam and heat insulating. A step of forming a layer, a step of sequentially joining a plurality of the heat insulation panels from the bottom to the top with an appropriate interval outside the foam heat insulation layer, and assembling the heat insulation panels through a heat insulation panel base material, A vertical partition that seals the left and right gaps formed between the left and right end portions of the heat insulation panel and the foam heat insulation layer by spraying a foam heat insulation material vertically on the left and right end portions of the heat insulation panel every time it is assembled. Forming a horizontal partition that seals the upper gap by spraying a foam insulation over the upper gap formed between the location near the upper end of the heat insulation panel and the foam insulation layer in the left-right direction. Shi This transverse partition member and the longitudinal partition body square and it has the characteristics to include, and forming a closed air layer surrounded sealingly to the foamed insulating interlayer and the insulating panel.

  The heat insulating wall structure of the present invention is a heat insulating wall structure in which a heat insulating panel is constructed on the outside of a housing wall via a heat insulating layer, and the heat insulating layer is a foam heat insulating material made of a foam heat insulating material sprayed on the outer surface of the housing wall. Between the right and left end portions of the heat insulation panel and the foam heat insulation layer by spraying the left and right end portions of the heat insulation panel between the right and left ends of the heat insulation panel. A vertical partition made of a foam heat insulating material that seals the left and right gaps, and an upper gap formed between a portion near the upper end of the heat insulation panel and the foam heat insulation layer is sprayed across the left and right directions to form the upper gap. It is characterized in that it is composed of a sealed air layer formed so that its four sides are enclosed in a hermetically sealed manner by a horizontal partition made of a foam heat insulating material to be sealed.

  According to the outer heat insulating construction method and the heat insulating wall structure of the above configuration, between the foam heat insulating layer formed on the outer surface of the housing wall and the heat insulating panel, the foam heat insulating material is sprayed on the left and right ends of the heat insulating panel in the vertical direction. Forming a vertical partition that seals the left and right gaps formed between the left and right ends of the heat insulation panel and the foam insulation layer, and the upper gap formed between the upper end portion of the heat insulation panel and the foam insulation layer By blowing a foam heat insulating material over the left and right directions, a horizontal partition that seals the upper gap is formed, and the vertical partition and the horizontal partition form a sealed air layer that is enclosed in a sealed manner on all four sides. This sealed air layer can easily form a heat insulating layer having a high heat insulating property between the housing wall and the heat insulating panel in combination with the foam heat insulating layer.

  Since the vertical partition is formed by blowing foam heat insulating material to the left and right end portions of the heat insulation panel, the left and right gaps can be reliably sealed even when there are small or large irregularities on the left and right end portions of the heat insulation panel. In addition, since the horizontal partition is formed by blowing a foam heat insulating material into an upper gap formed between a location near the top end of the heat insulation panel and the foam heat insulation layer, a location near the top end of the heat insulation panel or the foam heat insulation layer Even when there are small or large irregularities, the upper gap can be reliably sealed. Rather, when there are small irregularities in the left and right end portions of the heat insulation panels, the upper end portion of the heat insulation panel, and the foam heat insulation layer, the adhesion of the foam heat insulation material can be increased and the sealing performance can be improved. According to the seal by the vertical partition and the horizontal partition formed by spraying these foam heat insulating materials to the required locations between the heat insulating panel and the foam heat insulating layer, for example, the gasket (molded product) made of the foam heat insulating material and the heat insulating panel It is excellent in that it can be sealed without a small gap even when compared with a sealing method sandwiched between required places between the foam insulation layers.

  Thus, the sealed air layer formed between the foam heat insulation layer and the heat insulation panel is hermetically surrounded by the vertical partition body and the horizontal partition body made of spray foam heat insulation material, so that the seam between the heat insulation panels is It is possible to reliably block the air flow and enhance the heat insulation effect.

  The vertical partition is formed by spraying and filling the insulating foam material only in the vertical direction on the left and right ends of the heat insulation panel, and the horizontal partition is formed by placing the foam heat insulation material near the upper end of the heat insulation panel and the foam heat insulation layer. It is formed by spraying and filling only the upper gap formed between the left and right directions, but according to the spraying form and the amount of spraying of such a heat insulating foam material, the heat insulation panel is so deformed that it bulges and deforms. The foaming pressure of the heat insulating foam material is not applied. Therefore, it is not necessary to shorten the length dimension of the heat insulating panel or increase the panel thickness in consideration of the foaming pressure of the foam heat insulating material. By eliminating the need to shorten the length of heat insulation panels, it is no longer necessary to shorten the distance between heat insulation panel base materials or increase the number of heat insulation panel base materials. It can be made longer and the number of heat insulating panel base materials can be reduced, so that material costs and construction costs can be reduced. Further, since it is not necessary to increase the thickness of the heat insulation panel, it is possible to reduce the weight of the heat insulation panel, facilitate the construction, and reduce the cost.

  The amount of heat-insulating foam material sprayed between the foam heat-insulating layer and the heat-insulating panel is sufficient to form a vertical partition and a horizontal partition, and the foam heat-insulating layer is the same as conventional foam heat-insulating layers of laminated heat-insulating layers. Compared to using a large amount until the space between the insulation panel and the insulation panel is filled, the amount of the foam insulation can be greatly reduced, and the construction cost and material cost can be greatly reduced.

  A preferred embodiment of the present invention will be described with reference to the drawings. 1 is a front view of a heat insulating wall structure obtained by the outer heat insulating method of the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, FIG. 3 is an enlarged cross-sectional view of a portion E in FIG. 1 is an enlarged sectional view taken along line BB in FIG. 1, FIG. 5 is an enlarged sectional view taken along line CC in FIG. 1, and FIG. 6 is an enlarged sectional view taken along line DD in FIG.

  1 and 2, the heat insulating wall structure according to the present invention has a heat insulating panel 2 assembled at an appropriate interval on the outside of a housing wall 1 in a refrigerated warehouse or the like, and between the heat insulating panel 2 and the housing wall 1. The heat insulating layer 3 is formed.

  The frame wall 1 is formed of a concrete wall. As shown in FIG. 3, the heat insulating panel 2 is formed by sandwiching a heat insulating material 6 such as urethane foam between a metal front surface plate 4 and a back surface plate 5 provided with unevenness by embossing or the like. Moreover, the heat insulation panel 2 is provided with the metal upper frame part 7 and the lower frame part 8 in the upper and lower ends, respectively, the lower frame part 8 is formed in cross-sectional groove shape, and the upper frame part 7 is a groove | channel of the lower frame part 8. It is formed in a cross-sectional shape that can be fitted in 8a.

  As shown in FIG. 4 to FIG. 6, the heat insulation panel 2 is appropriately spaced by a heat insulation panel base material 22 made of a vertical trunk edge 9 having a metal cross-sectional groove shape, anchor bolts 10, spacers 11, etc. So that they can be assembled. That is, the vertical drum edge 9 is attached to the anchor bolt 10 planted on the frame wall 1 via the spacer 11, and the heat insulating panel 2 is assembled by being fixed to the vertical drum edge 9 by the drill screw 12. In this way, the plurality of heat insulating panels 2 are assembled in the vertical direction (up and down direction) and the horizontal direction (left and right direction).

  As shown in FIGS. 1, 3, and 4, the heat insulating layer 3 includes a foam heat insulating layer 13 made of a foam heat insulating material sprayed and applied to the entire outer surface of the housing wall 1, and the foam heat insulating layer 13 and the heat insulating panel 2. In the meantime, it is comprised with the sealed air layer 16 formed so that the four sides were enclosed by the vertical partition 14 and the horizontal partition 15 formed by spraying of a foam heat insulating material. A foamed polyurethane or the like is used as the foam insulation, and a spray gun or a nozzle is used for spraying.

  As shown in FIG. 1 and FIG. 4, the vertical partition 14 sprays the foam heat insulating material on the left and right end portions of the heat insulation panel 2 in the vertical direction so that the left and right end portions of the heat insulation panel 2 and the foam heat insulation layer 13 The left and right gaps formed between the two are sealed. On the other hand, as shown in FIG. 1 and FIG. 3, the horizontal partition 15 extends the left and right direction in the upper gap formed between the location near the upper end of the heat insulation panel 2 and the foam heat insulation layer 13. The upper gap is formed to be sealed by spraying.

  Next, the outer heat insulation method of this invention is demonstrated with reference to FIGS. First, as shown in FIGS. 4 to 6, the vertical trunk edge 9 is attached to the anchor bolt 10 planted on the frame wall 1 via the spacer 11. At that time, the vertical trunk edge 9 is attached to the outer surface of the housing wall 1 in parallel in the horizontal direction with a required interval.

  Next, as shown in FIGS. 4 to 6, a foam heat insulating material 13 having a required thickness is formed on the outer surface of the housing wall 1 by spraying a foam heat insulating material. At that time, as shown in FIG. 4, when the portion 13 a along the side portion of each vertical trunk edge 9 is sprayed so as to rise from the other portion 13 b, it is formed between the left and right end portions of the heat insulating panel 2 and the foam heat insulating layer 13. The left and right gaps are advantageous in that they can be more reliably sealed together with the vertical partition 14 described later, but such a raised portion 13a is not necessarily formed.

  Next, the heat insulation panel 2 is passed between the vertical drum edges 9 and the heat insulation panel 2 is appropriately spaced outside the foam heat insulation layer 13 by fixing means such as driving a drill screw 12 into the heat insulation panel 2 and the vertical drum edge 9. Assemble in the horizontal direction.

  Thereafter, as shown in FIGS. 1 and 4, the foam heat insulating material is sprayed on the left and right end portions of the heat insulating panel 2 in the vertical and vertical directions to form the heat insulating panel 2 between the left and right end portions and the foam heat insulating layer 13. A vertical partition 14 for sealing the left and right gaps is formed. In this case, as shown in FIG. 4, the gap between the end of one heat insulation panel 2 and the end of the other heat insulation panel 2 at the joint (joint) between the heat insulation panels 2 and 2 adjacent to each other in the horizontal direction. And the plate-shaped vertical partition 14 is formed by spraying a foam heat insulating material in the space | interval between the vertical trunk edges 9 and 9 over the vertical direction so that these gaps may be filled up completely. As shown in FIG. 6, in the corner portion where the heat insulating panel 2 and the heat insulating panel 2 meet, the foamed heat insulating material is sprayed on the corner portion in the vertical and vertical directions to form the vertical partition 14 having a triangular cross section.

  Also, as shown in FIGS. 1 and 3, foamed heat insulating material is sprayed across the left and right sides of the upper gap formed between the upper end portion of the heat insulation panel 2 and the foamed heat insulation layer 13 to seal the upper gap. A rod-shaped horizontal partition 15 is formed.

  As described above, the vertical partition 14 is formed on the left and right end portions of the heat insulation panel 2 by blowing the foam heat insulating material, and the foam insulation is formed in the upper gap formed between the upper end portion of the heat insulation panel 2 and the foam heat insulation layer 13. By forming the horizontal partition 15 by spraying the material, a sealed air layer 16 is formed between each heat insulating panel 2 and the foamed heat insulating layer 13 so that the four sides are enclosed in a sealed manner by the horizontal partition 15 and the vertical partition 14. Is done.

  Next, in this way, in the lower thermal insulation panel 2 in which the sealed air layer 16 is formed between the foam thermal insulation layer 13, the upper thermal insulation panel 2 is provided with the groove 8 a of the lower frame portion 8 having a cross-sectional groove shape. It joins by making it fit to the upper frame part 7 of the heat insulation panel 2 of the lower stage side (refer FIG. 3). By forming the vertical partition body 14 and the horizontal partition body 15 by blowing the foam heat insulating material between the upper heat insulating panel 2 and the foam heat insulating layer 13 in the same manner as the formation procedure of the sealed air layer 16 described above. A sealed air layer 16 is formed.

  After the dredging, the heat insulating panels 2 are successively joined together in the upward direction and assembled through the heat insulating panel base material 22, and the construction for forming the sealed air layer 16 is repeatedly performed up to the height of the frame wall 1 each time.

  Thus, as shown in FIGS. 1 and 4, the vertical partition 14 exposed at the joint (joint) between the heat insulating panels 2 and 3 adjacent in the lateral direction is covered with the decorative cover 17, and the decorative cover 17 is covered with the heat insulating panel 2. Is secured with a drill screw 18. As shown in FIGS. 1 and 6, the corner vertical partition 14 is covered with a corner decorative cover 19 having an L-shaped cross section, and this cover 19 is also fastened to the heat insulating panel 2 with a drill screw 20.

  As described above, between the foam heat insulating layer 13 sprayed and applied to the entire outer surface of the housing wall 1 and the heat insulating panel 2, the airtightly enclosed by the vertical partition 14 and the horizontal partition 15 by spraying the foam heat insulating material. By forming the air layer 16, the heat insulating effect can be further enhanced in combination with the heat insulating function by the foam heat insulating layer 13.

  Although the vertical partition 14 and the horizontal partition 15 are formed by spraying a foam heat insulating material, since the foaming pressure of the heat insulating foam material is hardly applied to the heat insulating panel 2 at the time of spraying, the foam pressure of the foam heat insulating material is reduced. Therefore, it is not necessary to shorten the length dimension of the heat insulation panel 2 or increase the panel thickness, shorten the interval between the heat insulation panel base materials 22, 22, or the number of the heat insulation panel base materials 22. There is no need to increase it. Therefore, the space | interval of heat insulation panel base materials 22 and 22 can be lengthened, the quantity of the heat insulation panel base materials 22 can also be reduced, and material cost and construction cost can be reduced. Moreover, since it is not necessary to make the heat insulation panel 2 thick, the heat insulation panel 2 can be reduced in weight, easy to construct, and reduced in cost.

  The amount of heat-insulating foam sprayed between the foam insulation layer 13 and the heat insulation panels 2 and 2 is sufficient to form the vertical partition 14 and the horizontal partition 15, and the construction cost and material cost of the foam insulation are sufficient. It can be greatly reduced.

It is a front view of the heat insulation wall structure obtained by the outer heat insulation construction method of this invention. It is the sectional view on the AA line in FIG. It is an expanded sectional view of the E section in FIG. It is the BB line expanded sectional view in FIG. FIG. 2 is an enlarged sectional view taken along line CC in FIG. 1. FIG. 2 is an enlarged sectional view taken along line DD in FIG. 1. It is sectional drawing of the heat insulation wall structure of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing wall 2 Heat insulation panel 3 Heat insulation layer 13 Foam heat insulation layer 14 Vertical partition 15 Horizontal partition 16 Sealed air layer 22 Heat insulation panel base material

Claims (2)

In the outer heat insulation construction method of building a heat insulation panel via a heat insulation layer on the outside of the frame wall,
Forming a foam heat insulating layer by spraying a foam heat insulating material on the outer surface of the housing wall;
A step of sequentially joining a plurality of the heat insulation panels from the bottom to the upper direction at appropriate intervals outside the foam heat insulation layer and assembling the heat insulation panel via a heat insulation panel base material;
Each time each heat insulation panel is assembled, the left and right gaps formed between the left and right end portions of the heat insulation panel and the foam heat insulation layer are sealed by spraying a foam heat insulation material vertically on the left and right end portions of the heat insulation panel. A step of forming a vertical partition,
A horizontal partition that seals the upper gap is formed by spraying a foam heat insulating material across the left and right directions in an upper gap formed between the upper end portion of the heat insulation panel and the foam insulation layer. And forming a sealed air layer surrounded by the vertical partition in a sealed manner on the four sides between the heat insulating panel and the foam heat insulating layer,
An outer heat insulation method characterized by containing. In the heat insulating wall structure formed by building a heat insulating panel through a heat insulating layer on the outside of the housing wall,
The heat insulating layer,
A foam heat insulating layer made of a foam heat insulating material sprayed on the outer surface of the housing wall;
Left and right gaps formed between the left and right end portions of the heat insulation panel and the foam heat insulation layer by spraying the left and right end portions of the heat insulation panel over the vertical direction between the foam heat insulation layer and the heat insulation panel. A vertical partition made of a foam insulation material that seals the foam, and a foam that seals the upper gap by spraying the upper gap formed between the portion near the upper end of the heat insulation panel and the foam insulation layer in the left-right direction. A sealed air layer formed so that its four sides are hermetically surrounded by a horizontal partition made of heat insulating material;
A heat insulating wall structure, characterized by comprising:

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