JPS61240097A - Regenerative element - Google Patents

Abstract

PURPOSE:To provide a regenerative element from which comfortable warm feeling can be obtained to a human body when it is used, by tightly bonding one regenerative part which is a container in which latent heat regenerative substance mainly consisting of hydrate salt is sealed, while the other regenerative part which is a flexible container in which an organic latent heat regenerative substance is sealed, respectively. CONSTITUTION:As for a hydrate salt latent heat regenerative substance 1, hydrate salt of sodium acetate 3 of which melting point is 58 deg.C is used, with 2 weight percent of lithium fluoride as an over-cooling preventive agent added to it. As for an organic latent heat regenerative substance 4, paraffin wax of which melting point is about 50 deg.C is used. One hundred grams each of these latent heat regenerative substances is sealed in a capsule 5 respectively, which is a laminated film in three layers consisting of polyester, deposited aluminum, and polypropylene from outer side, and of which internal diameters are 100mmX200mm. After their surfaces are molded and made smooth by applying heat to them, these regenerative bags 6 are bonded to each other using a bonding agent 7 of epoxy resin. The regenerative element herein mentioned can be obtained in such a manner. In this regenerative element, the surface of a capsule in which paraffin wax is sealed has moderate flexibility at the time of radiation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat storage element using a latent heat storage material.

Conventional technology In conventional heat storage elements, the latent heat storage material was simply stored in a container made of metal or high-density polyethylene [Katsuhiko Narita et al.: Journal of the Institute of Electrical Engineers of Japan, Yubo, P. 1]
5 (1981)].

Problems to be Solved by the Invention Since the surface of such a heat storage element is rugged and hard, when used as a warming device, it feels extremely uncomfortable at the point of contact with the body. This has been a major problem when applying latent heat storage materials to heating devices.

The present invention is intended to solve these problems, and specifically aims to provide a heat storage element that provides an extremely comfortable feeling of warmth when used as a heating device.

Means for Solving the Problems In order to solve this problem, the present invention provides one heat storage section in which a latent heat storage material containing hydrated salt as a main component is housed in a container, and a flexible organic latent heat storage material. The other heat storage part is placed in close contact with the other heat storage part housed in a container with a heat storage part, and either one of the heat storage parts is provided with an electric heater.

Function: With this configuration, when the other heat storage section is touched from the surface with the hand during heat dissipation, it exhibits appropriate flexibility, and even when it comes into contact with the body, there is no lumpy or uncomfortable feeling. In addition, in this other heat storage section, a heat storage section containing a hydrated salt-based latent heat storage material with a high heat storage density is provided closely. It is much smaller and lighter than when storing heat with heat storage materials.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows a first embodiment, which includes a heat storage section 3 in which a latent heat storage material 1 containing hydrated salt as a main component is housed in a container 2, and a flexible organic latent heat storage material such as paraffin or polyethylene glycol. 4 and a heat storage section 6 housed in a flexible container 5 are bonded together with an adhesive 7 to form a structure in which they are in close contact with each other.

Desirably, the melting point of the hydrated salt stored in the heat storage section 3 is higher than the melting point of the organic latent heat storage material 4 stored in the heat storage section 6.

FIG. 2 shows a second embodiment, in which an electric heater 8 is provided in a heat storage element having the same structure as the first embodiment. The electric heater 8 is provided on the surface of the heat storage section 3 opposite to the surface that is in close contact with the heat storage section 4, and a planar electric heater is used as the electric heater 8.

Next, specific examples will be described.

(Specific Example 1) As a hydrated salt-based latent heat storage material, sodium acetate trihydrate (CH3CO2Na-3820) with a melting point of 58°C is used as a supercooling prevention material. ! ! 9% sodium fluoride (
Paraffin wax with a melting point of about 50° C. was used as an organic latent heat storage material.

Each 100g of these latent heat storage materials was made from a laminate film consisting of three layers: polyester (12μ■), vapor-deposited aluminum <500A), and polypropylene (120μm) from the outside.The inner diameter was 10011141X20041.
It was sealed in a +11 size bag. After heat-molding these heat storage bags to make the surfaces flat, they were bonded to each other using an epoxy resin adhesive to obtain the heat storage element of this example. In this heat storage element, the surface of the bag filled with paraffin wax had appropriate flexibility during heat dissipation. After storing sufficient heat in this heat storage element, when the surface was covered with a towel and used as a heating device for the back of a human body, an extremely comfortable feeling of warmth was obtained, and the element functioned satisfactorily as a heat storage element.

(Specific Example 2) As the hydrated salt-based latent heat storage material, a material containing sodium acetate trihydrate as the main component was used as in Specific Example 1, and as the organic latent heat storage material, polyethylene glycol with a melting point of about 45°C was used. was used. 200g of the hydrated salt-based latent heat storage material was stored in a stainless steel container with a size of 100m x 20Gas+ x 8m, and the organic latent heat storage material was packed in order from the outside: polyester (12μm), nylon (15μm),
Aluminum foil (9 μl).

It was sealed in a bag with an inner diameter of 100IIIX 200M made of a 4-layer laminate film of polyethylene (80μI). After heating this heat storage bag and making the surface flat,
The heat storage element of this example was obtained by bonding it to a stainless steel container containing a hydrated salt latent heat storage material using a urethane adhesive. In the heat storage element of this example as well, the back surface encapsulating polyethylene glycol had appropriate flexibility during heat dissipation. After sufficiently storing heat in this heat storage element, when the surface was covered with a towel and used as a foot warmer, an extremely comfortable warm sensation was obtained.

(Specific Example 3) An electric heater was provided in the heat storage element similar to that of Specific Example 1, and a prototype was manufactured. As an electric heater, a linear heating element with surface insulation is heated from the outside using polyester (12 μm), aluminum foil (20 μm), and polyethylene (80 μm).
A surface heater sandwiched between the three-layer laminate film was used, and this heater was attached to the surface of the heat storage section housing the hydrated salt-based latent heat storage material using an epoxy resin adhesive.

The heat storage element of this example is heated and stored by an electric heater, and when used as a cordless electric cushion by covering it with felt about 5III thick and covering it with an outer skin, it gave a very comfortable touch and warm sensation. Obtained. Further, even when this cordless electric cushion was used repeatedly, no problems such as leakage of the hydrated salt-based latent heat storage material from the container occurred.

1 (Specific Example 4) A trial production was made by providing the same heat storage element as in Specific Example 2 with an electric heater. As an electric heater, a planar heater is used, which is made by laminating aluminum foil that has been etched to an appropriate resistance and sandwiched between polyester films, and this planar heater is placed in a stainless steel container containing a hydrated salt latent heat storage material. It was attached to the surface using adhesive tape. The heat storage element of this example is heated and stored by an electric heater, and when it is covered with soft polyurethane foam with a thickness of about 10 am+ and used as a cordless electric anchor with an outer skin, it has a very mild and pleasant feeling of warmth. was obtained, and it had a sufficient capacity as a regenerative electric heater.

The above four specific examples have been described, but when the two heat storage parts are integrated as in these examples, the heat transfer between them is carried out smoothly, and the heat storage characteristics and heat radiation characteristics are improved. . In addition, when considering actual use, the heat storage section containing the organic latent heat storage material becomes the heat dissipation surface that comes into contact with the human body, so the hydrated salt-based latent heat storage material in one of the heat storage sections located further away from the heat dissipation surface. By making the melting point of the material slightly higher than the melting point of the organic latent heat storage material of the other heat storage section, it becomes possible to keep the temperature of the heat radiation surface constant and efficiently extract the stored heat. Furthermore, by providing this heat storage element with an electric heater, the range of application of the heat storage element of the present invention becomes wider. When storing heat using this electric heater, the temperature relationship is opposite to that during heat dissipation as described above, so by providing the electric heater on the opposite side of one heat storage part that is in close contact with the other heat storage part, Stable heat storage characteristics can be obtained. Naturally, by using a planar electric heater, heat is smoothly transferred to the heat storage element, and heat storage efficiency is increased.

Effects of the Invention As described above, according to the present invention, one heat storage section has a latent heat storage material containing hydrated salt as a main component stored in a container, and an organic latent heat storage material has been stored in a flexible container. The other heat storage part has a structure in which they are in close contact with each other, and the heat dissipation surface of the other heat storage part, which houses the organic latent heat storage material, has an appropriate flexibility on the surface, so that it does not dissipate even when it comes into contact with the body. There is no discomfort, and when used as a heating device, an extremely comfortable feeling of warmth can be obtained, making it extremely useful in practical use. In addition, since one heat storage section containing a hydrated salt-based latent heat storage material with a high heat storage density is installed closely in the other heat storage section, the same amount of heat can be stored in a flexible organic material such as paraffin. It is much smaller and lighter than storing heat with wood. Furthermore, by providing an electric heater in this heat storage element, a heat storage element that is most suitable for a cordless electric heater can be obtained.

Furthermore, the heat storage element of the present invention is applicable not only to heating devices but also to all fields that utilize heat storage.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views of a heat storage element in a first embodiment and a second embodiment of the present invention.

Claims (1)

[Scope of Claims] 1. One heat storage section in which a latent heat storage material containing hydrated salt as a main component is housed in a container, and the other heat storage section in which an organic latent heat storage material is housed in a flexible container. heat storage elements that are placed in close contact with each other. 2. The heat storage element according to claim 1, wherein one heat storage section and the other heat storage section are integrated. 3. The heat storage element according to claim 1, wherein the melting point of the hydrated salt stored in one heat storage part is higher than the melting point of the organic latent heat storage material stored in the other heat storage part. 4. One heat storage section in which a latent heat storage material containing hydrated salt as a main component is housed in a container and the other heat storage section in which an organic latent heat storage material is housed in a flexible container are brought into close contact with each other. A heat storage element with an electric heater installed in one heat storage section. 5. The heat storage element according to claim 4, wherein an electric heater is provided on the opposite surface of one heat storage section that is in close contact with the other heat storage section. 6. The heat storage element according to claim 4, wherein the electric heater is planar.