JPS6046350B2 - Heat insulation method for built-in refrigerated warehouses, etc. - Google Patents

Description

[Detailed Description of the Invention] With the recent increase in the size of refrigerated and refrigerated warehouses, power consumption is also increasing due to the nature of their business, and energy saving is required not only for new and expanded warehouses but also for existing refrigerated and refrigerated warehouses. has been done.

This invention was invented from the viewpoint of a construction method for forming a more reliable heat-insulating layer and a construction method that can effectively save energy.

As shown in Figure 1, the construction method that has been commonly used so far is to apply a moisture-proof layer material to the heat-insulating base material 1 of a heat-insulating base material 1 such as reinforced concrete or PC concrete, and then
The heat insulating layer 3 is formed by attaching an appropriate number of heat insulating materials 3b and 3c depending on the design and room temperature using a heat insulating material 3a such as a heat insulating molded plate or glass wool thereon. The heat-insulating layer 3 is attached to the heat-insulating base material 1 using anchor bolts 4 and insulation bolts 5, with holding crosspieces 6 interposed. A cargo rail 7 is provided inside. The problem with this commonly used construction method is that, especially when pasting a heat-insulating molded board from the first layer, it cannot flexibly follow the unevenness of the heat-insulating base surface, resulting in gaps. For upper layers after the second layer, the gaps are amplified, resulting in a large number of gaps between each heat-insulating layer. This causes the cold air inside the refrigerator to leak to the outside, resulting in heat loss. This causes problems such as dew condensation on the outside and freezing inside and outside the heat shielding layer. In order to solve the problems of this commonly used construction method,
For example, a construction method described in Japanese Patent Application Laid-Open No. 55-60163 was also carried out, but the outer box-shaped body for warehouse exterior material and formwork and the inner box-shaped body for warehouse interior material and formwork placed at intervals inside the box-like body were also used. A foamed and solidified liquid material is injected into the space between the box-shaped body to form foamed insulation, but the structure of this building is limited to a steel frame structure, and the construction method makes it relatively small. This construction method is suitable for single-story buildings with simple structures.

This invention improves the above-mentioned general construction method and provides a construction method suitable for multi-story warehouses. Originally, it is desirable that the heat-insulating base surface be a uniform and smooth surface, but there are limits to construction accuracy, and the current situation is that the heat-insulating base surface is not necessarily formed as required.

Therefore, in this invention, as a construction method that allows the original heat-insulating effect to be exhibited even if the heat-insulating base surface is not maintained in a satisfactory state, the first layer space is separated from the heat-insulating base surface and the second and subsequent heat-insulating layers. The second and subsequent heat insulating layers are formed between the first and second layers, and then a foamed-in-place heat insulating material, such as urethane foam, is injected into the space and foamed to form the first heat insulating layer. A feature of this construction method is that by fixing the second and subsequent heat insulation layers, it also serves as a formwork material for later injecting and foaming in-situ foam insulation materials, such as urethane foam. By using an in-situ foaming heat insulating material, such as urethane foam, as the first layer, it is possible to compensate for the drawbacks of the commonly used construction methods described above. In-situ foam insulation materials (e.g. urethane foam) are continuously foamed, so there are no joints and they are effective in blocking the leakage of cold air to the outside.The characteristics of current foam insulation materials (e.g. urethane foam) allow them to be used as heat-insulating base materials. It also has the effect of strongly adhering to the second layer of heat insulating material and preventing the heat insulating layer from lifting or shifting. Next, this invention will be explained with reference to the drawings.

In one embodiment of the construction method according to the present invention, a moisture-proof layer is formed on a heat-insulating base plate 10 as shown in FIG. The heat insulating molded plate 11 is fixed by being inserted between an anchor bolt 13, a nut, and two presser plates 14 and 15.

Adjustments to maintain a uniform and smooth surface of this heat-insulating layer instead of the formwork include anchor bolts 13, nuts, and holding plates 14, 1.
Adjust according to the tightening condition in step 5. Thereafter, a foamed-in-place heat insulating material 12, for example, urethane foam, is injected and foamed into the space of the first layer. The height of the second and subsequent layers of heat-insulating molded plates required for one foaming process is approximately 60-1200 mm. The position is appropriate.

The height of foaming is determined in relation to the foaming pressure of the foamed-in-place heat insulating material 12, for example, urethane foam. This operation is repeated to form a heat-insulating layer. The heat insulating layer formed in this way maintains a uniform and smooth reference surface, so even if a heat insulating material such as glass wool 17 is added to the upper layer, there will be no distortion, and the same method can be repeated to make the heat insulating layer thicker. You can also go there. That is, in Fig. 2, a smooth reference surface is formed between the second or third heat insulation layer and the reinforced concrete or PC concrete plate that is the heat insulation base material by the heat insulation molded plate 11. By injecting and foaming the foamed heat insulating material 12 into those spaces (first layer), the heat insulating base surface and the heat insulating molded board 11 are firmly bonded and fixed, and spaces are created by the joints between the heat insulating molded boards 11. A fourth layer that prevents damage and is added as necessary.
This makes construction of the fifth layer etc. easy and reliable. Finally, a cargo rail 16 is provided with a space inside. Since these are unrelated to the structure 18 such as columns and beams, they can be applied to multi-story floors.

[Brief explanation of the drawing]

Figure 1 is a partial sectional view of a structure made using a commonly used construction method, Figure 2 is a partial sectional view of a structure made using the construction method of this invention, and Figures 3 and 4 are FIG. 2 is a plan view and a front cross-sectional explanatory diagram of a multi-story refrigerated and refrigerated warehouse. 1, 10: Heat-insulating base material, 11, 12, 17: Heat-insulating layer, 1
2: Foamed heat insulating material, 18: Structural bodies such as columns and beams.

Claims (1)

[Claims] 1. Create a space in advance with a heat-insulating base material and a heat-insulating molded board away from the pillars, beams, and other structures of a built-in refrigerated warehouse, etc., and use the heat-insulating base material and heat-insulating molded board as a formwork to install the foam heat-insulating material in this space. An insulation construction method for built-in refrigerated warehouses, etc., characterized by injecting and foaming.