JPS6151104B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sauna bath wall material, and particularly to a sauna bath wall material for infrared (far infrared) rays.

Conventionally, wall materials for sauna baths have various heat retention and insulation structures to increase heat retention and insulation efficiency. One of them is as shown in Figure 1.
There is one in which a space 7 is formed between a wooden interior material 5 and an exterior material 6, and the space 7 is filled with glass wool 9 covered with aluminum foil 8. In this wall structure, the space 7 and the glass wool 9 filled in the space 7 prevent heat conduction, and the aluminum foil 8 reflects heat rays from the interior material 5 side to increase radiation efficiency. It is. However, in this case, the heat rays that reach and are reflected by the aluminum foil 8 are absorbed by the interior material 5, so the reflection efficiency is low, and the amount of time it takes to preheat the sauna bath due to heat absorption by the interior material 5 is low. The disadvantage is that it takes a long time. In addition, in the case shown in Fig. 2, an aluminum plate 10 is used as the interior material 5.Although this material has an excellent heat ray reflection effect, it has good thermal conductivity, so the human body cannot move through this interior material. There was a drawback that there was a risk of getting burned if the material 5 was touched.

The present invention has been made in view of the above points, and is a sauna that uses infrared rays as the main heat source, which does not cause burns and has excellent heat retention and insulation properties, and can preheat the sauna bath in a short time. The purpose is to provide wall materials for baths.

That is, the present invention provides a sauna bath using infrared rays as the main heat source, characterized in that a heat insulating material 3 is filled between an aluminum plate 1 and an exterior material 2, and a protective sheet 4 is coated on the surface of the aluminum plate 1. The above purpose has been achieved by using wall materials.

The present invention will be explained in detail below with reference to Examples. As the aluminum plate 1, an aluminum plate material or an aluminum plywood with an aluminum layer formed on the surface can be used, and as shown in FIG. It is filled with a heat insulating material 3 which is generally used to improve heat insulation. The entire surface of the aluminum plate 1 is covered with a thin protective sheet 4. The protective sheet 4 is made of a material with low specific heat and poor thermal conductivity. For example, a polypropylene resin sheet, a synthetic resin foam having a closed cell layer, a natural board, etc. can be used, and these protective sheets can be used. Attach 4 to aluminum plate 1 with adhesive etc.
By adhering to the surface of the aluminum plate 1
This prevents the aluminum from being directly exposed to the surface, thereby preventing burns even if the temperature of the surface of the aluminum plate 1 rises. 11 in the figure is a core material.

Therefore, when using the wall material for a sauna bath formed in this way as a wall for a sauna bath, the wall material is joined as shown in FIG. 4 with the protective sheet 4 inside. . The infrared (far-infrared) rays emitted from the light source of the sauna bath are reflected by the aluminum plate 1 on the surface of this wall material, so the human body in the sauna bath is exposed to radiation from the light source directly. In addition to warming the body, it can also be heated by the reflected heat rays, and it can uniformly warm not only the light source side but the entire human body. Further, the surface of the aluminum plate 1 is covered with a protective sheet 4 for preventing burns as described above, but since this protective sheet 4 is formed of a thin sheet whose heat capacity is not large enough to cause preheating loss, It does not absorb a large amount of thermal energy from the light source,
This makes it possible to shorten the preheating time for sauna bathing. Furthermore, the protective sheet 4 coated on the surface of the aluminum plate 1 can prevent the aluminum plate 1 from being corroded by sweat and moisture, and can also improve the water resistance of this wall material. In addition, the protective sheet 4 is attached to the aluminum plate 1.
By covering the entire surface of the wall material, the flexible protective sheet 4 is interposed between the wall materials when the wall materials are joined, and the gap between the wall materials can be sealed. In addition, in terms of cost, by using the aluminum plate 1 coated with the protective sheet 4 as the interior wall material, it is less expensive than natural wood veneer and has excellent heat resistance. Compared to reflective materials such as stainless steel plates, it is less expensive, has excellent workability, and is lightweight, making it easy to transport.

Note that the protective sheet 4 may be multilayered, with a resin foam formed on the surface of the aluminum plate 1, and a heat resistant material further formed on the surface. By doing this, in addition to the above effects, the cushioning properties are good, the leather touch is achieved, and the aesthetic appearance is also improved.Also, the adhesion to the aluminum plate 1 is improved due to the anchoring effect on the foam, which is combined with the flexibility of the sheet 4. This improves high-temperature durability.

FIG. 5 shows another embodiment, in which the heat insulating material 3
is removed, and a honeycomb core 14 made of, for example, kraft paper is filled between the aluminum plate 1 and the exterior material 2. By filling the inside with this honeycomb core 14 to create a sandwich structure, it is possible to withstand thermal deformation and external loads. It can be made thin, inexpensive, lightweight, and easy to transport and install.

As described above, in the present invention, since a heat insulating material is filled between the aluminum plate and the exterior material, the heat insulating material can increase the heat retention and insulation effect, and the radiation efficiency can be increased by reflecting infrared rays by the aluminum plate. The sauna bath made of this wall material has very high thermal efficiency, and since the surface of the aluminum plate is coated with a protective sheet, there is no risk of human skin touching the surface of the wall material. The aluminum plate, which has good direct heat conductivity, is not exposed on the surface, so there is no risk of burns, and the heat energy from the light source, whose main heat source is infrared rays, is largely absorbed by the protective sheet. This makes it possible to shorten the preheating time for a sauna bath.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway sectional view of a conventional example, Fig. 2 is a partially cutaway sectional view of another conventional example, Fig. 3 is a sectional view of an embodiment of the present invention, and Fig. 4 shows the same wall material as above. A partially cutaway sectional view showing a joined state, and FIG. 5 is a partially cutaway sectional view of another embodiment of the same. 1 is an aluminum plate, 2 is an exterior material, 3 is a heat insulating material, and 4 is a protective sheet.

Claims (1)

[Claims] 1. A wall material for a sauna bath using infrared rays as a main heat source, characterized by filling a space between an aluminum plate and an external wall material with a heat insulating material, and covering the surface of the aluminum plate with a protective sheet.