JPS60163655A - Heating 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 Industrial Application The present invention relates to a heating device that requires flexibility, such as body-attached heating.

Structure of conventional examples and their problems Traditionally, 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 has been done. This will be explained below with reference to FIG. As shown in FIG. 1, a heating device 1 is composed of a heat storage mat 2 and a heat insulating material a. Furthermore, since a heat storage mat for body warming requires flexibility, the melting point is T as shown in FIG. Flexible independent container 4 sealed with heat storage material
The configuration is such that they are arranged vertically, horizontally, or vertically and horizontally. Of course, the connections between each container are constructed of flexible material. In this configuration, if a heat storage material with a required temperature does not exist, a heat storage material with a melting point higher than the above temperature is used, and the surrounding area is covered with a heat insulating material to lower the surface temperature to the required temperature. was. This configuration has the problem that the thickness of the heat insulating material must be increased, which increases the size of the heating device as a whole. Furthermore, even if a heat storage material with the required temperature exists, if the amount of latent heat per unit weight is small, a large amount of heat storage material must be used to obtain the required amount of heat, making it heavier. was there.

OBJECTS OF THE INVENTION The present invention solves these conventional problems and aims to provide a small and lightweight heating device.

Structure of the Invention In order to achieve this object, the present invention provides a heat storage mat in which sealed containers containing two or more types of heat storage materials having different melting points are arranged vertically, horizontally, or vertically and horizontally.

With this configuration, the temperature of the entire heating device can be kept almost constant by the heat radiation of the heat storage material with a high melting point in the early stage of heat radiation, and by the heat radiation of the heat storage material with a low melting point in the latter stage. That is, the entire heat storage mat is heated to a constant temperature, but while the high melting point heat storage material releases latent heat at its melting point during the heat dissipation stage, the heat radiation of the heating device is covered by the high melting point heat storage material.

When the high melting point heat storage material releases latent heat, the temperature of the heat storage cloak decreases to the melting point of the low melting point heat storage material.

This period corresponds to sensible heat release from both heat storage materials. When the temperature drops to the melting point of the low melting point heat storage material, the latent heat released by the heat storage material covers the heat radiation of the heating device. Therefore, in order to keep the heat radiation amount constant, it is necessary to make the heat radiation area of the low temperature heat storage material larger than the heat radiation area of the high temperature heat storage material of the heat storage mat. With the above configuration, even if a high melting point heat storage material is used, the heat radiation of the whole heating device is taken care of, so the heat radiation temperature becomes low, and the thickness of the heat insulating layer of the heating device can be reduced.

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

In FIG. 3, the heat storage mat 2 has a structure in which flexible independent containers 4 in which heat storage material is sealed are arranged vertically and horizontally. The container contains heat storage materials a having different melting points.

b is included. For example, acetic acid as the heat storage material a)
IJium 3 ice salt (melting point 58°C1 latent heat 60cal/g
) For example, sodium sulfate decahydrate (melting point: 32°C2 latent heat: 35 ca 17 g) is used as the heat storage material. Note that the same members as in FIGS. 1 and 2 are given the same numbers.

In the above configuration, heat dissipation after heat storage initially involves acetic acid sl-I.
Jium trihydrate is mainly responsible for the latter stage, and sodium sulfate decahydrate is mainly responsible. This allows a substantially constant amount of heat to be released.

For example, heat radiation temperature approximately 30C1 output 12 Kca I/h
When using sodium sulfate decahydrate, approximately 680 g is required. Also, sodium acetate 3
If water salt is used, 400g is required. I wanted to,
In the former case, if foamed polyurethane is used as a heat insulating material at a heat dissipation temperature of 30'c, the thickness of the heat insulating layer may be about 2 mm, but it is heavy.

In the latter case, it is lighter than the former, but because of the high temperature, the thickness of the heat insulating layer needs to be about 10 mm, making the whole structure larger.

Therefore, according to the present invention, by sealing sodium sulfate decahydrate and sodium acetate trihydrate in separate containers, and then using the integrated heat storage mat 2, a small and lightweight heat storage mat 2 can be obtained. That is, 340g of sodium sulfate decahydrate and 2-IJium acetate trihydrate are prepared.
When a total of 540 g of 0'Og heat storage material is used as one unit as shown in Fig. 3, it can be used for 2 hours with a 2 mm insulation layer and approximately 30°' CI 2 Kcal/h, although this varies somewhat depending on the insulation design. This is because the heat storage material is lighter or smaller than when each heat storage material is used alone.

In the description of Section 1, case A↑ was explained using two types of heat storage materials, but three or more types of heat storage materials may be used.

In addition, in the above example, the case where one type of heat storage material is sealed in one container was explained, but in the case of incompatible and non-reactive materials such as hydrated salt-based heat storage material and paraffin-based heat storage material, the same container may be used. Two or more types of heat storage materials may be enclosed.

Effects of the Invention As described above, according to the heating device of the present invention, since it is configured using two or more types of heat storage materials with different melting points, the heat radiation time of each heat storage material is different, and heat radiation at a constant temperature is performed for a long time. be able to. Therefore, by combining the low melting point heat storage material and the high latent heat amount high temperature heat storage material, the heating device can be made smaller and lighter.

[Brief Description of the Drawings] Fig. 1 is a partially cutaway perspective view of a conventional heating device, Fig. 2 is a plan view of a conventional heat storage mat, and Fig. 3 is a heat storage mat according to an embodiment of the heating device of the present invention. FIG. 1... Warming device, 2... Heat storage mat, 4
·····container. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] A sealed container containing two or more types of heat storage materials with different melting points is placed vertically.
A heating device consisting of heat storage mats arranged horizontally or vertically.