JPS6044797A - Heat storage device - Google Patents

Abstract

PURPOSE:To enhance the safety of a heat storage device by strongly fixing a heater as well as quickly store heat by laminating many connected baggy containers of a flexible sheet, in which a heat storing material is enclosed, through a heater. CONSTITUTION:Two flexible sheets 6, each of which consists of connectors 9 and 11 and baggy containers 7 and 12, are laminated with each other in such a way that the baggy containers 7 of one flexible sheet 6 are matched with the connectors 11 of the other flexible sheet 10. Also, a heater 13 is fixed in contact with the baggy containers 7 and 12 and the connectors 9 and 11 between the laminated flexible sheets 6 and 10. Heat energy to be discharged from the heater 13 when storing heat is transmitted to the heat storing materials 8 and 14 through the baggy containers 7 and 12 and the connectors 9 and 11 of the flexible sheets 6 and 10 in contact with the heater 13. Since the heat storing materials 8 and 14 are uniformly heated from their circumferences, they are quickly fused. Heat energy to be discharged from the heater 13 can thus be effectively stored by the heat storing materials 8 and 14 in a short time.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a heat storage device used for body warming.

Structure of conventional example and its problems Conventional heat storage devices of this type are covered with a heat insulating material (not shown) as shown in Fig. 1, and are covered with a flexible plastic sheet or plastic and metal foil. A heat storage material 2 is enclosed in a sheet 1 laminated with (for example, aluminum foil).

2."-2.3 is a connecting part where the sheet 1 is heat-sealed and then bonded. 4 is a bag-shaped container formed by the sheet 1-1 and filled with the heat storage material 2. The heater 5 was disposed in contact with the bag-like container 4. In the above configuration,
Heat storage is performed by the heat storage material 2 receiving heat energy emitted by the heater 5 through the wall 4a of the bag-like container 4 that is in contact with the heater 5. Then, the heat storage material 2 is completely melted (solid-liquid) and the heat storage is completed. Further, heat radiation is performed by applying the heat stored in the heat storage material 2 to the body through the other wall 4b of the bag-shaped container 4. As the heat radiation progresses, the solid 2a of the heat storage material 2 gradually grows from the wall 4b, until all the liquid 2b of the heat storage material 2 becomes the solid 2a, and the heat radiation is completed. However, the sides where the heater 5 and the bag-shaped container 4 are located are exposed to outside air, respectively.
And the body side.

The biggest advantage of using the heat storage material 2 as a body warming device (for example, a vest) is that it becomes cordless after heat storage is completed, and considering practicality (marketability), it can complete heat storage in a short time and dissipate heat for a long time. It must be something that can last 3, -8-:Σ. The heat dissipation time mainly depends on the insulation performance (heat dissipation rate) and the amount of the heat storage material 2.The heat storage material 2 has a large heat storage capacity and can be used as a body warming device for several hours. In order to complete heat storage, the heating density of the heater 5 (W/m S or W
/n? ) needs to be increased. Since the heat input from the heater 5 to the heat storage material 2 is performed in one direction from the wall 4a of the bag-like container 4 which has a limited area in contact with the heater 5, the solid 2a of the heat storage material 2 generally has poor thermal conductivity. Considering these points, rapid heat storage is not possible. If the rate of heat input from the heater 5 to the heat storage material 2 is slow, the heater 5 will have a high temperature, resulting in a large loss of heat radiation to the outside air and a decrease in heat storage efficiency.

Further, in some cases, the film 1 reaches a temperature higher than its allowable temperature limit, and the bag-shaped container 4 is thereby torn and the heat storage material 2 leaks out, making it unusable. For this reason, the heating density (heat radiation amount) of the heater 5 could not be increased so much that KM heating could not be performed for a short period of time. Since the outer wall is a curved surface, the bag-shaped container 4
However, it is difficult to increase the contact area between the heating unit 5 and the heating unit 5, and considering that this is a body warming device, fixing the heating kg 5 cannot be said to be sufficient. For this reason, there was a risk that the heater 5 would come off the bag-like container 4 and overheat, damaging the device.

OBJECTS OF THE INVENTION The present invention solves such conventional problems, and aims to provide a heat storage device that can quickly complete heat storage, can be put to practical use, and is safe.

Structure of the Invention In order to achieve this object, the present invention provides a bag-like container made of a flexible sheet in which a plurality of bag-like containers in which heat storage material is sealed is connected to a connected portion of the other flexible sheet. The flexible sheets are laminated in correspondence with each other, and a heater is disposed between the laminated flexible sheets in contact with the bag-like container and the connecting portion.

With this configuration, the contact area between the heater and the flexible sheet (including the bag-shaped container in which the heat storage material is sealed and the connecting portion) can be increased.

Description of examples 5 pages An embodiment of the present invention will be described below with reference to FIG.

In FIG. 2, a bag-like container 7 is formed from a flexible sheet 6 such as a laminate sheet made of plastic such as polyethylene, polypropylene, nylon, and aluminum foil, and
A heat storage material 8 such as sulfur acetate helium trihydrate is sealed in the bag-like container 7. The bag-shaped container 7 is formed around the heat storage material 8 by adhesive or heat sealing, and is interconnected. 9 is a connecting part. Using two flexible sheets 6 consisting of the connecting portion 9 and the bag-like container 7, the bag-like container 7 of one flexible sheet 6 corresponds to the connecting portion 11 of the other flexible sheet 10. It is laminated as shown.

Furthermore, between the laminated flexible sheets 1-6 and IQ, a heater 13 such as a chipping heater wire or a surface heater is attached in contact with the bag-like containers 7 and 12 and the connecting portions 9 and 11. is fixed by heat fusion.

- In the configuration described above, the thermal energy released from the heater 13 during heat storage comes into contact with the heater 13 677,...
++ It is transmitted to the heat storage materials 8, 14 through the bag-like containers 7, 12 of 6.10 (flexible seams) and the connecting portions 9.11. Since the heat storage materials 8 and 14 are uniformly heated from their entire circumferences, they melt quickly. However, the temperature remains approximately constant until the heat storage material 8.14 is completely melted.

In this way, the thermal energy released by the heater 13 can be efficiently stored in the heat storage materials 8 and 14 in a short time. Moreover, for this reason, the temperature difference between the heater 13 and the heat storage material 8.14 can be reduced, and the heat resistance of the flexible sheet 6.10 and the heater 1a can be increased. The heated heater 13 is a bag-like container 7,1 between two flexible sheets 6.10.
2. Since it is in contact with the concave and convex portions formed by the connecting portions 9 and 11 over a wide area, it is firmly fixed. Incidentally, in the second embodiment, the heat accumulated in the bag-like containers 7 and 12 is $4'8.14
Although only the case where it is filled has been described, an anti-supercooling agent and a gelling agent may be used as necessary.

Further, although the case where two flexible sheets are laminated is described, three or more flexible sheets may be laminated and used.

Effects of the Invention As described in section 2, the heat storage device of the present invention provides the following effects.

(1) Since the heater is placed between the flexible sheets in contact with the bag-shaped container in which the heat storage material is sealed and the connection part, the heat storage material is uniformly heated over a wide area, and therefore in a short time. Can store heat.

(2+ (Similar to 11, the heater is in contact with the flexible sheet over a wide area, so the heater can be firmly fixed.

(3) During heat storage, the temperature difference between the heater and the heat storage material can be reduced, and the heat resistance of the flexible sheet and the heater can be increased.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view of a conventional heat storage device, and FIG. 2 is a partial sectional view of a heat storage device according to an embodiment of the present invention. 6.10...Flexible sheet, 8,14...
・・Heat storage A, 9, 11...Connection part, 7, 1
2... Bag-shaped container, 13... Heater. Figure 1 Figure 2

Claims (1)

[Claims] The bag-like container of the flexible sheet, in which a large number of bag-like containers sealed with heat storage material are connected, is stacked so as to correspond to the connected portion of the other flexible sheet, and the pair of flexible sheets that are stacked are stacked together. A heat storage device including a heater provided between flexible sheets and in contact with the bag-shaped container and the connecting portion.