JPS615844A - Heat taking apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a heating device such as body-attached heating using a latent heat storage material that prevents leakage of the latent heat storage material.

Conventional structure and problems Latent heat storage materials that utilize latent heat have advantages such as a large amount of heat storage per unit weight and the ability to maintain a constant temperature, so attempts have been made to use them in cordless body warming devices. It's here. FIG. 1 shows a conventional heating device 1. As shown in FIG. The latent heat storage material 2 is enclosed in a container 3 made of a film laminated with a flexible plastic film and metal foil.

Furthermore, if necessary, a heat insulating layer is provided around the outer periphery of the container 3 to suppress heat release.

(not shown). However, this configuration has the following problems. That is, since the latent heat storage material 2 is a liquid during heat storage, if the container 3 were damaged for some reason, there was a risk that the melt of the latent heat storage material 2 would leak and damage the human body or the surrounding area.

For example, when the pin 4 is stuck in FIG. 1, the melt of the latent heat storage material 2 easily leaks out through the interface between the pin 4 and the container.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned problems and provides a practical heating device in which almost no latent heat storage material leaks to the outside even if the heat storage container is damaged.

Structure of the Invention In order to achieve this object, the present invention integrates a container in which a heat storage material is sealed and a heat storage material leakage prevention layer that surrounds the container and has little affinity with the heat storage material. It is. With this configuration, even if the container is damaged and the latent heat storage material leaks from the container, the heat storage material will be repelled by the heat storage material leakage prevention layer and will not leak outside because the heat storage material has little affinity with the heat storage material leakage prevention layer. It is possible to obtain a safe heating device with very little cost.

Description of examples Embodiments of the present invention will be described below with reference to the drawings.

In addition, the same number is attached to the same item. In FIG. 2, the heat storage container 5 is made of a latent heat storage material 2 made of a hydrophilic hydrated salt such as sodium carbonate decahydrate, sodium thiosulfate pentahydrate, and sodium acetate trihydrate. It is sealed in a container 3 made of a flexible film laminated with aluminum foil. A feature of the present invention is that the heat storage material 2 surrounding the container 3 and a hydrophobic heat storage material leakage prevention layer 6 are provided. This hydrophobic heat storage material leakage prevention layer 6 is
A hydrophobic film made of polyethylene, nylon, polypropylene, etc. may be provided, but since the tear strength of the film is low, if a part of the film is damaged, the damage will expand and the function of the heat storage material leakage prevention layer 6 will be impaired. There is a possibility that it will not work. Therefore, it is preferable to use a woven fabric or a non-woven fabric to be water-repellent treated with silicone or the like to form the heat storage material prevention layer. Alternatively, the heat storage material leakage prevention layer 6 may be formed by subjecting the surface of the film in contact with the heat storage container to a water repellent treatment, or by laminating a water repellent treated woven or nonwoven fabric. With this configuration, if the container a is damaged for some reason, for example, if the pin 4 is pierced, the heat storage material 2 will leak out from the container 3. However, the hydrophilic heat storage material 2 is water repellent by the heat storage material leakage prevention layer 6,
It cannot leak out of the layer 6 and is housed between the container a and the heat storage material leakage prevention layer 6. Therefore, the heat storage material 2 will not leak to the outside, and will not cause damage to the human body or the surroundings.

In the above explanation, a case was described in which a heat storage material made of hydrated salt was used, but when a hydrophobic heat storage material such as paraffin is used, the same effect can be achieved by making the heat storage material leakage prevention layer hydrophilic. .

Effects of the Invention In the present invention, since a heat storage material leakage prevention layer is provided on the outside of the container in which the heat storage material is sealed, the heat storage material leaked from the container will not leak to the outside, and therefore will not cause damage to the human body or the surroundings. I have nothing to give.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional heating device, and FIG. 2 is a sectional view of a heating device according to an embodiment of the present invention. 2... Heat storage material, 3... Container, 5... Heating device, 6
...Heat storage material leakage prevention layer. Name of agent: Patent attorney Toshio Nakao (1st person)
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Claims (1)

[Claims] A heating device comprising a container in which a heat storage material is sealed and a heat storage material leakage prevention layer that surrounds the container and has little affinity with the heat storage material.