JPS598740B2 - One-way heat transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a one-way heat transfer device that can be effectively used in solar heat collectors, heat exchangers, and the like.

Conventional heat transfer devices have one
The structure is such that heat from the heating body side is transmitted to the heated body side through the wall body.

Therefore, for example, when solar heat is used on the heating body side and water is used on the heated body side, normally the water can absorb heat from the sun through the wall, but in the case of rain etc. There was a problem in that the heat absorbed by the water was dissipated through the wall.

The purpose of the present invention is to enable efficient unidirectional heat transfer no matter how the temperature between the heated body side and the heated body side changes, and in order to achieve this purpose, A first wall body located on the side of the heating body and a second wall body located on the side of the heating body are arranged so that a gap is normally formed between the two wall bodies and the wall bodies are curved convexly toward the body to be heated. The present invention provides a unidirectional heat transfer device made of a material having a large coefficient of thermal expansion and a large coefficient of heat transfer.One embodiment of the device will be described below with reference to the drawings.

Reference numeral 1 denotes a box-shaped insulating body with one side open (the top in the figure), which includes an insulating material 2 made of polystyrene foam, foamed mortar resin, Shichimenju foam, etc., and an outer shell made of polypropylene film bag or coating. 3
It consists of

4 is a first portion disposed to close the open portion of the heat insulating main body 1;
A wall 5 is a second wall disposed outside the first wall 4.

A heated object flow space 6 is formed by the first wall 4 and the heat insulating body 1, and therefore the heat insulating body 1 is provided with a heated body supply pipe 7 and a heated body discharge pipe 8.

The first wall 4 is fixed by fitting the fitting part 9 integrated with its outer edge into the heat insulating body 1, and the second wall 5 is fixed at its outer edge to the heat insulating body 1.

Furthermore, both walls 4 and 5 are arranged so that a gap 10 is created between them in a normal state, and the walls are curved convexly toward the heated object side, that is, toward the heated object flow space 6 side.

Both walls 4 and 5 are made of a material with a large coefficient of thermal expansion and heat transfer, for example, the first wall 4 is made of polypropylene, polyethylene, polyvinyl chloride, nylon, etc., and the second wall 5 is made of polypropylene. It is made of nylon, polyvinyl chloride, metal, etc.

A plurality of legs 11 are integrally molded from the inner surface of the first wall 4 so as to be able to come into contact with the inner surface of the heated object flow space 6 .

Furthermore, one or more tension springs 12 are provided between both inner surfaces.

This tension spring 12 is made of a material with large thermal expansion.

Next, the effect when the one-way heat transfer device having the above configuration is used as a solar heat collecting device will be explained.

Figure 1 shows the normal state.

At this time, the first wall 4 is curved convexly due to the elastic force of the tension spring 12 until the leg 11 comes into contact with it, and there is a uniform gap 10, that is, an air layer, between it and the second wall 5. It is formed.

In this state, solar heat A1 heats the second wall 5, and then heats the first wall 4 due to convective heat transfer in the air layer.

Further, the water B1 from the heated object supply pipe 7 flows through the heated object flow space 6, absorbs the heat of the first wall 4 during that time, and is discharged from the heated object discharge pipe 8 as hot water b1.

In this way, normal heat transfer C1 takes place under normal conditions.

Figure 2 shows a state in which it is receiving high solar heat A2.

According to this, the second wall 5 thermally expands and descends, and the gap 10
is reduced so that many parts come into contact with the first wall body 4.

Therefore, the heat transfer C2 is carried out directly at a high temperature, so that high-temperature water b2 can be obtained.

FIG. 3 shows a state in which water B2 at a low temperature is being supplied.

According to this, the first wall body 4 heat-shrinks and rises, and the gap 10
is reduced so that many parts come into contact with the second wall body 5.

Therefore, the heat transfer C2 is carried out directly at a high temperature, so that a high temperature water b2 can be obtained.

If we look at the above all together, Figure 1 shows the case where the solar heat is at room temperature and the supplied water is at room temperature (normal temperature - normal water), and the case where the solar heat is high and the supplied water is at room temperature (high temperature - normal water) is shown in Figure 2. In addition, Figure 3 shows a case where the solar heat is at room temperature and the supplied water is at low temperature [normal temperature - low water].

In either case, there is a difference in heat transfer, but the heat transfer is unidirectional.

Looking at other forms, [at room temperature and high water temperature] the state shown in Figure 1, [
High temperature and high water: The state shown in Figure 2, [High temperature and low water] is a combination of Figures 2 and 3, [Low temperature and normal water], [Low temperature and high water], and [Low temperature and low water]. In the case of water], the deformed state shown in FIG. 1 is obtained in which the gap 10 is increased, and in both cases, heat transfer occurs in one direction.

As described above, according to the present invention, efficient one-way heat transfer is achieved no matter how the temperatures on the heated object side and the heated object side change, respectively.

Particularly when the object to be heated becomes sensitive or the temperature of the object to be heated becomes low, both walls automatically come into contact with each other to improve the heat transfer coefficient.

In the opposite case, although the heat transfer coefficient decreases, unidirectional heat transfer can be maintained, and a heat retention effect can be expected due to the air layer in the gap.

Such a one-way heat transfer device can be effectively used in many ways, such as a solar heat collector, a gas-gas or gas-water heat exchanger, and a house wall panel.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIGS. 1 to 3 are sectional views showing the operating state, respectively, and FIG. 4 is a longitudinal sectional view of the main parts. 1... Insulation main body, 2... Insulation material, 3... Outer skin body,
4... First wall body, 5... Second wall body, 6... Heated object flow space, 7... Heated object supply pipe, 8... Heated object discharge pipe, 9... ...Mating part, 10...Gap, 11...
・Leg body, 12...Tension spring.

Claims (1)

[Claims] 1. A first wall body located on the side of the heated body and a second wall body located on the side of the heating body are arranged so that there is a gap between the two walls under normal conditions and the wall body is curved convexly toward the heated body side, A one-way heat transfer device characterized in that both walls are made of a material having a large coefficient of thermal expansion and a large coefficient of heat transfer.