JPH112461A - Heat storage unit for latent heat storage heater - Google Patents

Abstract

(57) [Abstract] [Problem] To reduce the deformation of a heat storage agent when receiving a load,
It is an object of the present invention to provide a heat storage unit for a latent heat storage type heating tool that can keep the use time of the heating tool long. SOLUTION: A latent heat storage element 3 in a heat storage unit 5 is divided into three latent heat storage blocks 3A, 3B, 3 independent of each other.
C to reduce the deformation of the latent heat storage element 3 when receiving a load.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latent heat storage type heating device for a vehicle, and more particularly to a structure of a heat storage unit for a latent heat storage type heating device.

[0002]

2. Description of the Related Art FIGS. 3 (a) and 3 (b) show the structure of a conventional latent heat storage type heating device. In the latent heat storage type heating device, a latent heat storage agent 1 is sealed in a bag body 2. FIG. A heat storage unit 5 in which the latent heat storage body 3 and the electric heater 4 are fixedly integrated is a heat insulating material 6.
And heats the latent heat storage element 3 by energizing the electric heater 4 to heat the latent heat storage element 3. The electric heat heater 4 is not used when in use, and the heat radiation phenomenon of the latent heat storage element 3 is used. Then, the temperature of the heating tool is maintained. Reference numeral 4h in FIG. 3B indicates a heater wire of the electric heater 4. Normally, this latent heat storage type heating device has a structure shown in FIG.
As shown in (a), three heat storage units 5, a back unit 5a, a waist unit 5b, and a foot unit 5c, are provided. A thermostat 7 is installed substantially at the center of a surface (hereinafter, referred to as an upper surface) of the heat storage unit 5 opposite to the electric heater 4 side (hereinafter, referred to as a lower surface). The degree is detected, and when a predetermined heat storage state is reached, the power supply to the electric heater 4 is stopped and the heat storage in the latent heat storage element 3 is controlled to be completed. As shown in FIG. 3B, a SUS plate 8 is provided between the heat storage unit 5 and the thermostat 7 to keep the shape of the latent heat storage type heating tool flat.
Is inserted.

[0003]

By the way, the latent heat storage agent 1 dissolves and becomes soft immediately after completion of the heat storage.
It has the property of being recrystallized and hardened as heat radiation proceeds. Therefore, after using the latent heat storage heater,
Since the latent heat storage agent 1 is solidified while receiving a load from above in a soft state, the latent heat storage agent 1 is biased to both ends in the heat storage unit 5 as shown in FIG. The latent heat storage agent 1 at the center of the unit 5 where the thermostat 7 is installed is solidified in a state where the thickness becomes the thinnest. The completion of the heat storage of the latent heat storage agent 1 is determined by the temperature detected by the thermostat 7,
Next, when storing heat in the latent heat storage type heating tool, the heat storage agent 1a in the central portion having the smallest thickness is dissolved but the heat storage unit 5
The thermostat 7 operates in a state in which the heat storage agents 1b at both end portions of the inside are not sufficiently stored, and the energization of the electric heater 4 is stopped. Therefore, since the heat storage operation is completed without sufficient heat storage in the latent heat storage element 3, the heat release time of the latent heat storage agent 1 is shortened, and the usable time of the heating tool is shortened. There was a problem that it would. When the thermostat 7 is installed at the end of the heat storage unit 5, the energization of the electric heater 4 can be continued until the heat storage agent 1b at the end is melted. In addition, since the temperature of the heat storage agent 1a at the center is too high, the heat storage agent 1a at the center becomes difficult to recrystallize, and there is a problem that the heat radiation efficiency of the entire heating device is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional problems, and has a latent heat storage type heating system capable of reducing deformation of a heat storage agent when receiving a load and maintaining a long use time of a heating device. It is an object to provide a heat storage unit for a tool.

[0005]

According to a first aspect of the present invention, there is provided a heat storage unit for a latent heat storage type heating tool, wherein at least three independent latent heat storage materials are sealed in a latent heat storage body in the heat storage unit. It is constituted by a bag so as to reduce the deformation of the latent heat storage element when receiving a load.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing the structure of a heat storage unit 5 for a latent heat storage type heating tool according to an embodiment of the present invention. 3 is a latent heat storage element, 4 is an electric heater, and 4h is a heater wire of the electric heater 4. is there. Also, in FIG.
6 is a heat insulating material, 7 is a thermostat, and 8 is a SUS plate. The latent heat storage element 3 has a latent heat storage element block 3A, 3B, 3C, which is a bag in which three latent heat storage agents are sealed, and is arranged adjacent to the latent heat storage element 3B. In addition, a thermostat 7 is installed with a SUS plate 8 interposed therebetween.

As shown in FIG. 2, the latent heat storage agent 1 is solidified while receiving a load from above while the latent heat storage agent 1 is in a soft state. Since it is divided into three latent heat storage blocks 3A, 3B, and 3C, the deformation of the heat storage agent 1 when receiving a load (solid line BB in the drawing) is the same as the conventional latent heat storage 3 It is smaller than the deformation in a certain case (broken line A-A in the figure). This is because when the latent heat storage element 3 is divided into three, the heat storage agent 1 in the central heat storage element 3B block which receives the most load can move only in the bag of the latent heat storage element 3B block. Therefore, the decrease in the thickness of the central portion of the latent heat storage block 3B is caused by the latent heat storage blocks 3A, 3B.
This is because the heat storage agent 1 becomes significantly smaller than the case where the heat storage agent 1 can move together. Therefore, when the latent heat storage type heating device is next to be stored, when the heat storage agent 1a in the central portion having the smallest thickness is dissolved, not only the heat storage agent 1b at the end of the latent heat storage body 3B block, Since the heat storage agent 1 of the latent heat storage blocks 3A, 3C is also sufficiently stored, the heat radiation time of each of the latent heat storage blocks 3A, 3B, 3C can be extended, and the use time of the heating device can be maintained long.

As described above, according to the present embodiment, three latent heat storage blocks 3A, 3B,
Since the 3Cs are arranged adjacent to each other, the deformation of the latent heat storage element 3 can be reduced. Therefore, at the temperature at which the thermostat 7 operates, the heat storage of the heat storage agent 1 of each of the latent heat storage blocks 3A, 3B, and 3C is sufficiently performed, so that the heat radiation time of the latent heat storage body 3 can be extended, and the use time of the heating device can be increased. Can be kept long.

In the present embodiment, the thermostat 7 is installed right above the latent heat storage block 3B. However, since the deformation of the latent heat storage body 3 is small, the thermostat 7 is directly above the latent heat storage block 3A or 3C. May be installed. Further, in the latent heat storage type heating device, the waist unit 5 having the largest deformation among the heat storage units 5a to 5c.
b is preferably composed of a plurality of latent heat storage blocks as described above, but all the heat storage units of the back unit 5a, the waist unit 5b, and the foot unit 5c are replaced by a plurality of latent heat storage units. May be configured.

[0010]

As described above, in the heat storage unit for a latent heat storage type heating tool according to the first aspect, the latent heat storage body is constituted by a bag in which at least three latent heat storage agents are sealed. Since the deformation of the latent heat storage element can be reduced, and the heat storage agent of each latent heat storage element is sufficiently stored at the temperature at which the thermostat operates, the heat radiation time of the latent heat storage element can be extended, and the usage time of the heating tool can be increased. Can be kept long.

[Brief description of the drawings]

FIG. 1 is a view showing a structure of a heat storage unit for a latent heat storage type heating tool according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a deformed state of the heat storage unit according to the embodiment of the present invention.

FIG. 3 is a view showing the structure of a conventional latent heat storage type heating device.

FIG. 4 is a diagram showing a deformed state of a conventional heat storage unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Latent heat storage agent 2 Bag 3 Latent heat storage body 3A, 3B, 3C Latent heat storage block 4 Electric heater 5 Heat storage unit 6 Heat insulation material 7 Thermostat 8 SUS plate

Claims (1)

[Claims] 1. An electric heater comprising: a latent heat storage member in which a latent heat storage agent is sealed in a bag; and an electric heater fixed to an integral structure, and a thermostat provided on a surface opposite to a surface provided with the electric heater. And a heat storage unit for a latent heat storage type heating tool for heating and controlling the latent heat storage element by the thermostat, wherein the latent heat storage element in the heat storage unit is separated from a bag body for sealing at least three independent latent heat storage elements. A heat storage unit for a latent heat storage type heating tool, wherein the heat storage unit is configured.