JPS6233506B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat insulating structure, and more particularly to a heat insulating structure suitable for cold storage warehouses and the like that require a high degree of heat insulation, and a method for constructing the same. The purpose is to propose a structure that has no joints and no gaps between insulation materials and has extremely excellent insulation performance, and a construction method for the same.

Conventionally, in order to insulate buildings such as cold storage warehouses, heat insulating boards such as synthetic resin foam boards were usually attached to the interior and exterior sides of the building frame. However, unit plates of heat insulating boards such as foam boards naturally have size limitations, and for example, it has been impossible to attach a single foam board to a wall of normal dimensions for insulation. Therefore, a plurality of foam boards were laid side by side with their ends facing each other. For this reason, a large number of joints were formed on the insulation construction surface, which inevitably resulted in some gaps and a decrease in insulation and moisture resistance. In particular, when the surface of the foam board becomes cold, the foam board shrinks, creating gaps at the joints or edges of the foam boards, reducing the insulation properties, and further forming cold bridges in the gaps, causing condensation and freezing. This resulted in drawbacks such as damage to the heat insulating layer.

This invention was made in view of the above circumstances, and its gist is that a large foam board made by bonding the end faces of a plurality of unit foam boards made of synthetic resin to each other is placed on the surface of the building frame to be insulated. The large foam board is loosely attached to the bolts protruding from the frame so that it can be moved slightly as it expands and contracts. A heat insulating structure and a method for constructing the same are characterized in that an elastic member made of a synthetic resin foam is press-fitted in contact with an end face.

In this heat insulating structure, the end faces of unit foam boards are joined together, and there are no joints on the foam board surface, which is a heat insulating material, so that gaps do not form at the joints and the heat insulation and moisture proof properties are not impaired. Even if the foam board shrinks due to long-term exposure to low temperatures, the bonded large foam board can be loosely attached to the building frame by inserting elastic members between the bolts that protrude from the building frame, allowing it to move slightly as it expands and contracts. Therefore, the large foam board disperses and relaxes the stress, expands and contracts without causing distortion, and the bonded end surfaces of the unit boards do not peel off or break. In addition, elastic members made of synthetic resin foam are press-fitted to the edges of at least two orthogonal sides of the large foam board, so that even if the foam board contracts, the elastic members on the two sides will not move vertically or horizontally. It stretches in the direction without creating a gap at the periphery, and even if it stretches, the elastic member contracts to relieve the stretching stress and prevent distortion and damage to the foam board. Therefore, high heat insulation and moisture proof performance can be maintained over a long period of time without creating any gaps on the heat insulation surface.

This will be explained below with reference to the embodiments shown in the drawings.

Figures 1, 2, and 3 are examples of a heat insulating structure in which synthetic resin foam boards are attached to the concrete walls of a cold storage warehouse. This insulation wall is 1800mm long x 900mm wide
× A single large foam board A made by heat-sealing a plurality of 100 mm thick polystyrene unit foam boards 1 or their half-cut boards to each other by heat-sealing their ends is placed on the concrete wall 2 to be insulated. be. An anchor bolt 3 is provided protruding from the concrete wall surface 2, and this bolt 3 passes through a bolt hole 4 of a large foam board A, and a nut 6 is screwed to the tip of the bolt 3 through a seat plate 5. The bolt hole 4 is slightly larger in size than the diameter of the bolt 3, and an elastic member B made of soft polyethylene foam is embedded around the anchor bolt 3 in the bolt hole, and the nut 6 is tightened relatively loosely. Foam board A is loosely attached and fixed to the concrete wall surface.

In addition, an elastic member made of soft polyethylene foam is provided between the periphery of this large foam board A, that is, other parts such as adjacent walls, ceilings, and floors.
B' is inserted by pressure contact. At the corner portion, this elastic member B' is fixed to the right angle corner of the concrete wall surface 2 with bolts 7, 7, and is press-fitted to the end surface of the adjacent large foam board A in a mutually interposed structure.

This insulating wall has the above structure, and the inside of the refrigerated warehouse is kept at an extremely low temperature. However, the shrinkage force of the large foam board A generated due to the low temperature is due to the effect of the loosely tightened nuts 6 and the jamming inside the bolt holes 4. Due to the expansion and contraction of the elastic member B, the force was uniformly transmitted to the entire large foam board A, and the joint surface between the unit foam boards 1 was not damaged or distorted due to the contraction. Also,
Due to the contraction, the distance between the periphery of the large foam board and the adjacent area increased, but the elastic member B', which was press-fitted to the periphery of the two orthogonal sides between them, expanded, completely filling this increased distance and closing the gap. I didn't leave anything behind. As a result, there was no gap in the insulation surface and the insulation performance was high, and there was no damage to the insulation material due to dew condensation or ice formation.

The synthetic resin foam board used in this invention is selected from foam boards of polystyrene, rigid polyethylene, polypropylene, rigid polyurethane, polyvinyl chloride, polymethyl methacrylate, etc. depending on the purpose. Further, face materials such as a moisture-proof layer may be laminated. These unit foam boards can be joined to form a large board by heat fusion, adhesive bonding, solvent bonding, or double-sided adhesive tape.

The elastic members B and B' are made of soft polyurethane,
Foams with elasticity and heat insulation properties, such as soft polyethylene, ethylene vinyl acetate copolymer, ionomer resin foams, or low-density polystyrene foams, are suitable. The elastic member interposed on the periphery of the large foam board may be fixed to the end surface of the periphery of the large foam board by adhesive or the like.

In this example, the large foam board A was attached to the concrete wall surface 2 through the anchor bolts 3 protruding from the concrete wall surface 2. However, it is possible to use insulation bolts for the anchor bolts, or to use synthetic resin female screw fasteners instead of the nuts 6. In some cases, the insulation performance can be improved. In addition, instead of the seat plate 5, a method such as using a long rim spanning multiple anchor bolts 3, arranging the rim in the horizontal or vertical direction, and loosely attaching the large foam board A to the wall surface is selected. You can also do that.

An example of construction of this insulation wall is described below.

First, the longitudinal end faces of the polystyrene foam board 1 are heat-sealed and joined to each other to form a long board 1' extending in the vertical direction of the wall surface 2, and this long board 1' is attached to the wall surface 2.
Lay them out in the vertical direction, heat-seal the end faces of each other to form a large foam board A, insert anchor bolts 3 into bolt holes 4 provided at predetermined positions,
Construction is carried out by embedding the elastic member B in the bolt hole 4, screwing and loosening the bolt 6 through the seat plate 5, and interposing the elastic member B' between other parts of the periphery.

In this heat insulating structure, it is not necessarily necessary to arrange the elastic member B' on the entire periphery of the large foam board. The object of the present invention can be achieved only by arranging it on at least two perpendicular sides. Figure 4 shows a large foam board A attached to a rectangular wall.
Stretchable members B' are arranged around two adjacent sides. In this case, the elastic member B′ is not arranged.
If the unit foam board 1a at the corner of the side is firmly fixed so that it does not move slightly, and the other anchor bolts 3 are loosely attached, the stress of expansion and contraction of the large foam board A will be distributed in the two sides where the expansion and contraction members B' are arranged. Since the elastic member B' is located around the two sides, there is no gap, and no excessive stress is applied to the large foam board A during expansion and contraction.

The heat insulating structure of the present invention does not necessarily have one large foam board disposed on the frame surface that forms one plane. A plurality of large foam boards may be arranged on one plane of the frame. FIG. 5 shows an example of this embodiment, and shows four large foam boards made by joining together a plurality of unit foam boards 1.
A′ is a wall surface that forms one plane, and elastic members are placed between each other.
B' is placed in pressure contact with the elastic member B', and an elastic member B' is also provided in pressure contact between other parts of the outer periphery of the elastic member B', and is loosely attached to the anchor bolt 3 protruding from a predetermined position to form a heat insulating wall. ing.

This heat insulating structure is not limited to the above embodiment. The ceiling and floor have the same structure,
It can have an insulated ceiling, an insulated floor, or it can have an insulated structure with foam boards attached to the outdoor side as well as the indoor side of the frame.

[Brief explanation of the drawing]

The drawings show embodiments of the invention, and the first
Figures 2 and 3 are front views of the insulation wall, respectively.
Longitudinal cross-sectional view of the loosely attached part and cross-sectional view of the corner, No. 4
FIG. 5 is a plan view of another embodiment of the heat insulating wall. 1... Unit foam board, 1'... Long foam board, 2...
...Wall surface, 3, 3a...Anchor bolt, 4...Bolt hole, 5...Seat plate, 6...Nut, 7...Bolt, A, A'...Large foam board, B, B'...Expansion sexual parts.

Claims (1)

[Claims] 1. A large foam board made by bonding the end faces of a plurality of unit foam boards made of synthetic resin to each other is arranged on the surface of the building frame to be insulated, and this large foam board has a structure that protrudes from the building frame. An elastic member is interposed between the installed bolts and the bolts are loosely attached to allow slight movement as the board expands and contracts, and synthetic resin foam is attached to at least two orthogonal edges of the large foam board in contact with the end face. 1. A heat insulating structure characterized by having an elastic member interposed therein by pressure contact. 2. Lay a plurality of unit foam boards made of synthetic resin with their end faces joined together to form a large foam board on the surface of the building frame to be insulated, and connect this large foam board to the bolts protruding from the building structure with elasticity. A flexible member made of synthetic resin foam is interposed between a member and loosely attached so as to be able to move slightly according to the expansion and contraction thereof, and is pressed against the end face of at least two orthogonal peripheries of a large foam board. construction method for insulated structures.