JPS6354982B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat pipe type solar heating system.

Some solar heating systems using heat pipes use heat pipes to transfer heat obtained from an outdoor heat collector to an indoor radiator, thereby heating the room indoors. Such devices are effective in unilaterally transferring heat obtained outdoors in the winter, but in the summer, despite the need to cool the indoors,
Since outdoor heat is unilaterally taken indoors, there is a problem that the indoor temperature increases.

The purpose of this invention is to eliminate the above-mentioned disadvantages, to be able to heat indoors by efficiently taking in solar heat, and to also be able to stop taking in heat indoors as needed, and to be able to switch between these steps. An object of the present invention is to provide an extremely simple heat pipe type solar heating system.

The solar heating system according to the present invention includes a solar heat collecting material placed outdoors, a heat radiating material placed indoors, a heat insulating material sandwiched between these materials, and a solar heat collecting material placed inside the heat insulating material. It is equipped with a heat pipe that is in contact with the heat collecting material and the heat dissipating material, and the heat pipe is U-shaped or loop-shaped, and at least a portion of the intermediate portion between the heat collecting part and the heat dissipating part is a flexible tube. The feature is that the middle part can be bent up and down.

The solar heat collecting material is made of, for example, a metal plate, and it is desirable to form a solar heat selective absorption film on the outdoor side to reduce radiation loss from the heat collecting surface and efficiently absorb solar heat. The effect can also be sufficiently exerted by applying black paint to the surface.
A solar heat selective absorption film can be created by directly applying a solar heat selective absorption coating to the heat collecting material, or by applying a solar heat selective absorption film generation treatment, or by pasting aluminum foil on which a solar heat selective absorption film has been formed onto the heat collecting material. It can also be obtained by

Examples of the heat dissipation material include those made of a metal plate, those made of a heat storage body, and those in which a metal plate is provided on the outdoor surface of the heat storage body.
In the case of a heat dissipating material made of a metal plate, it is desirable to paint the indoor surface in an appropriate color in order to improve heat dissipation indoors. As the heat storage body, a container made of metal or synthetic resin and sealed with a latent heat storage material is desirable. As the latent heat storage material, calcium chloride hexahydrate, paraffin, polyethylene glycol, etc. are used.

As the heat insulating material, any material generally used as a heat insulating material can be used, and examples thereof include urethane foam, styrene foam, glass wool, concrete, and brick.

Copper or stainless steel is generally used for the heat pipe and the flexible tube between the heat collecting part and the heat dissipating part, and the working fluid in the heat pipe is selected depending on the operating temperature, but Freon 12 is generally used. used. A gravity type heat pipe that does not use a heat pipe is desirable. In addition, the heat collecting part (evaporating part) of the heat pipe comes into contact with the solar heat collecting material,
The heat dissipation section (condensation section) of the heat pipe comes into contact with the heat dissipation material, but in the case of a gravity type heat pipe, the heat dissipation section is arranged above the heat collection section. Although the heat pipe may simply be in contact with the solar heat collecting material and the heat dissipating material, it is preferable that they be joined. In this case, it is preferable to join the heat pipe to the solar heat collecting material and the heat dissipating material by welding in order to reduce thermal resistance, but mechanical joining, adhesive joining,
Bonding using adhesive tape may also be sufficiently effective. The heat insulating material is filled, for example, by injection foaming or the like between the solar heat collecting material and the heat dissipating material to which the heat pipes are joined as described above. In addition, in the grooves formed on the outdoor and indoor sides of the insulation material,
Insert the straight pipe part of the heat pipe formed into a letter or loop shape, including the heat collection part and the heat radiation part, and use the outdoor side of the insulation material and the heat collection part of the heat pipe as the heat collection material, and the indoor side of the insulation material. The surface and the heat pipe heat dissipating section may be respectively bonded to the heat dissipating material by adhesive or thermal welding.

According to this invention, solar heat can be quickly and sufficiently introduced indoors by the heat pipe that is in contact with the solar heat collecting material placed outdoors and the heat radiating material placed indoors, and Since heat radiation from indoors to outdoors can be prevented by the heat insulating material and heat pipe provided between the solar heat collecting material and the heat dissipating material, it is possible to efficiently take in solar heat to heat the indoor space. In addition, if necessary, by bending the middle part of the heat pipe's heat collecting part and heat dissipating part upward, the transfer of heat from the solar heat collecting material to the heat dissipating material can be prevented, and the heat can be brought indoors. can be stopped. These switching operations can be easily performed by simply bending the intermediate portion between the heat collecting section and the heat dissipating section of the heat pipe up and down.

Embodiments of the present invention will be described below with reference to the drawings.

The solar heating system 1 consists of a frame 2 in the form of a picture frame, a transparent top plate 3 and a rear wall 4 that are housed within the frame 2, and are fitted into an opening 6 made in a building wall 5 and attached to the building wall. It forms part of 5.
The rear wall 4 includes a solar heat collecting material 7 on the outdoor O side, a heat dissipating material 8 on the indoor I side, a heat insulating material 9 sandwiched between them, and a heat collecting material 7 disposed within the heat insulating material 9. A plurality of heat pipes 10 in contact with heat dissipation material 8
The outer periphery of the heat collecting material 7 is hermetically fixed to the frame 2 by appropriate means, and the outer periphery of the heat insulating material 9 and the heat dissipating material 8 except for one horizontal end is fixed to the frame 2. Fixed in a sealed manner. A vertically elongated heat pipe intermediate housing space 11 is formed between one side end of the heat insulating material 9 and the heat dissipating material 8 and the frame 2. The heat dissipation material 8 is a metal heat dissipation plate 12 on the outdoor O side.
and a heat storage body 13 on the indoor I side.
3 is a box-shaped container 14 made of metal or synthetic resin that is in close contact with the heat sink 12, a plurality of horizontal cylindrical containers 15 made of metal or synthetic resin that are stacked and housed in this container 14, and It consists of a latent heat storage material 16 sealed in a cylindrical container 15. Further, the rear wall 4 is located on the indoor I side of the transparent top plate 3, the heat collecting material 7 constitutes the outdoor O side wall surface of the building wall 5, and the box-shaped container 14 of the heat storage body 13 is located on the indoor I side of the building wall 5. A heat pipe intermediate housing space 11, which forms a side wall surface, communicates with the indoor room I.

The frame 2 is made of metal or wood, and is fitted into the opening 6 by suitable means.

The transparent top plate 3 transmits sunlight so that the heat collecting material 7 receives a large amount of sunlight and suppresses heat loss from the heat collecting material 7, and its outer periphery is It is fixed to the frame 2 in a sealed manner, and a sealed space 17 is formed between the transparent top plate 3 and the rear wall 4. As the transparent top plate 3, a transparent glass plate is generally used, but transparent synthetic resin such as acrylic resin can also be used. A portion of the frame 2 outside the rear wall 4 protrudes outward from the building wall 5, and a communication port 19 with a door 18 is provided on both upper and lower sides of the frame 2 in this portion. It is provided.

The portion of the rear wall 4 outside the heat storage body 13 is constructed as follows using, for example, a plurality of rear wall constituent members 20 as shown in FIG. That is, each member 2
0 consists of a solar heat collector plate 21 and a heat sink plate 22 made of elongated rectangular metal plates having the same size, and a gravity type heat pipe 10 connecting them. The heat collecting plate 21 is arranged vertically so as to extend horizontally, and the heat dissipating plate 22 is arranged diagonally above and parallel to one side of the heat collecting plate 21. The heat pipe 10 has a U-shape in which one end of a heat collecting part 23 and a heat radiating part 24 extending parallel to the horizontal direction are connected to each other.
The heat pipe heat collecting section 23 and the heat pipe heat dissipating section 24 are joined to the heat collecting plate 21 and the heat dissipating plate 22 by welding or caulking, respectively, and the heat dissipating section 24 is located above the heat collecting section 23 . Heat collecting section 23 and heat dissipating section 24
The middle part 25 is made of a flexible tube and can be bent up and down. By stacking these plurality of members 20 in the vertical direction, one sheet of solar heat collecting material 7 consisting of a plurality of heat collecting plates 21 arranged vertically without gaps and one sheet consisting of a plurality of similar heat radiating plates 22 are obtained. A heat sink 12 is constructed. Then, a heat insulating material 9 is filled between the heat collecting material 7 and the heat dissipating plate 12 by appropriate means such as injection foaming. The heat collecting material 7 and the heat dissipating plate 12 may each be composed of one metal plate,
In this case, a plurality of heat pipes 10 are fixed between them. The insulation material 9 is a heat pipe 10
The intermediate portion 25 of the heat pipe is located only in the portion corresponding to the heat collecting portion 23 and the heat dissipating portion 24, and the heat pipe intermediate portion 25 is
It protrudes into the accommodation space 11 from one side end. A vertically long insulation material 2 is placed on the indoor I side of this space 11.
6 is fitted in a sealed manner. This heat insulating material 26 is attached to the box-shaped container 14 by a hinge 27 and can be opened and closed.

When heating is required, such as in the winter, the doors 18 of the communication ports 19 at the top and bottom of the frame 2 are sealed, as shown in FIG. By bending the portion 25 downward, the intermediate portion 25 connects from one end of the heat collecting portion 23 to the heat dissipating portion 24.
Make it gradually higher towards one end. The heat pipe intermediate section 25 is manually bent from indoors I by opening the heat insulating material 26 of the accommodation space 11, and when the work is finished, the heat insulating material 26 is closed. In this state, the heating device 1 operates as follows.

During the day, sunlight from the outdoor O passes through the transparent surface plate and hits the heat collecting material 7, and the heat pipe heat collecting part 23
is heated. As a result, the working fluid evaporates and moves through the heat pipe intermediate section 25 to the heat pipe heat dissipation section 24, where the gaseous working fluid radiates heat and condenses, and this heat passes through the heat dissipation plate 12 and moves to the heat storage body 13. is stored in The working fluid condensed in the heat dissipation section 24 returns to the heat collection section 23, is heated again and circulates in the same manner as above, and in this way,
Heat moves quickly and sufficiently from the heat collecting material 7 to the heat storage body 13. The heat stored in the heat storage body 13 is transferred indoors.
This heats the indoor space I. Even when heating is performed in this manner, heat is continuously transferred to the heat storage body 13 by the heat pipe 10 during the day, and sufficient heat is stored in the heat storage body 13. Even at night when the heat pipe heat collecting section 23 is not heated, the indoor room I is heated in the same manner as described above by the heat stored in the heat storage body 13. In this case, since the heat dissipation part 24 of the heat pipe 10 is located above the heat collection part 23, heat does not flow back from the heat dissipation part 24 to the heat collection part 23, and the heat between the heat collection material 7 and the heat dissipation material 8 is Since the heat insulating materials 9 and 26 are provided on the indoor I side portion of the pipe intermediate housing space 11, the indoor I
Heat dissipation from the outside to the outside O is prevented, and the indoor I can be heated efficiently.

When heating is not required, such as in the summer, the doors 18 of the communication ports 19 at the top and bottom of the frame 2 are opened, as shown in FIG. The part 25 is bent upward so that a part thereof is located above the heat radiation part 24. In this way, the heat collecting part 23
Even when heated by sunlight, this heat does not move from the intermediate section 25 to the heat radiating section 24 side. Therefore, solar heat is not taken into the indoor room I, and a rise in the temperature of the indoor room I due to solar heat is prevented. Moreover, the air in the space 17 inside the transparent top plate 3 heated by the sun's rays is removed from the upper communication port 19.
is discharged to the outside of the frame 2 through.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a vertical sectional view showing how it is used in winter, FIG. 2 is a horizontal sectional view thereof, FIG. 3 is a perspective view of the main parts of the rear wall component, and FIG. 4 is a vertical sectional view showing a state of non-use in summer. 1...Solar heat utilization heating device, 7...Solar heat collecting material,
8... Heat radiation material, 9... Heat insulating material, 10... Heat pipe,
23... Heat collection part, 24... Heat radiation part, 25... Intermediate part, I
...Indoor, O...Outdoor.

Claims (1)

[Claims] 1 A solar heat collecting material 7 placed on the outdoor O side, a heat dissipating material 8 placed on the indoor I side, a heat insulating material 9 sandwiched between them, and a solar heat collecting material placed in the heat insulating material 9 The heat pipe 10 is in contact with the material 7 and the heat dissipation material 8, the heat pipe 10 is U-shaped or loop-shaped, and the heat pipe 10 is U-shaped or loop-shaped, and at least in the middle part 25 between the heat collection part 23 and the heat dissipation part 24. A heat pipe type solar heating device characterized in that a portion is made of a flexible tube and an intermediate portion 25 can be bent up and down.