JPH0243991B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a heat collecting device for collecting solar heat.

Conventional configuration and its problems This type of conventional solar heat collector is shown in Figs. 1 and 2.

A plurality of heat collecting pipes 2 are fixed to the heat collecting plates 1 bent into a plurality of L shapes, and an upper header pipe 3 and a lower header pipe are provided at both ends of the heat collecting pipes 2 to communicate each pipe. A header pipe 4 is connected thereto. An L-shaped intermediate plate 5 is disposed approximately in the middle of the parallel heat collecting plates 1, and L-shaped end plates 6a and 6b are disposed at both ends of the heat collecting plates 1 in the direction in which they are arranged to collect heat. Pipe 2 is passed through. The heat collecting plate 1 is made of a material with high thermal conductivity such as an aluminum plate, and the intermediate plate 5
The end plates 6a and 6b are made of a strong material such as iron plate.

Intermediate plate 5 and end plates 6a, 6b
is attached to a support fitting 8 provided at the bottom of the case 7 with a screw 10 via an insulating cushioning material 9,
The upper end plate 6a is firmly fixed, and the lower end plate 6b and the intermediate plate 5 are held in a slidable state in the longitudinal direction of the heat collecting pipe 2. A heat insulating material 11 was disposed on the bottom surface of the case 7, and a transparent body 12 was fixed to the side opening of the upper surface of the case 7 by a holding plate 13 so as to cover the entire surface.

In the above configuration, solar heat passes through the transparent body 12, is absorbed by the heat collecting plate 1, is conducted to the heat collecting pipe 2, is transmitted to the heat collecting medium flowing inside the heat collecting pipe 2, and is collected.However, in order to reduce costs, For example, if a pipe with a diameter of 4 mm and a wall thickness of 0.3 mm is used as the heat collecting pipe 2, the mechanical strength is weak, so it may bend during assembly of the heat collecting part at the factory, and the intermediate part may be damaged due to vibration during transportation of the entire device. There was a problem that the space between the plate 5 and the end plates 6a and 6b was bent.

Furthermore, since the L-shaped lower surfaces of the end plates 6a, 6b and the intermediate plate 5 are attached to the support fittings 8 of the case 7, the heat collecting plate 1 must be removed from those parts, which increases the heat collecting performance. It also had the problem of decreasing.

Purpose of the invention The present invention solves the above-mentioned conventional problems.
The purpose of the present invention is to provide a high-performance and inexpensive solar heat collection device that does not bend or bend even when the diameter of the heat collection pipe is reduced, and can support the heat collection part in the case without reducing the number of heat collection plates. .

Structure of the Invention In order to achieve the above object, the present invention provides a plurality of heat collection plates through which a plurality of heat collection pipes are fixedly penetrated, upper and lower header pipes that communicate with the lower and upper ends of the heat collection pipes, and a heat collection plate. A reinforcing means consisting of an intermediate plate provided between the plates and an end plate provided at the lower end or both ends, and provided below the heat collecting plate in parallel with the heat collecting pipe and penetrating a portion of the middle plate and the end plate. is fixed to the upper header pipe, and this reinforcing means is fixed to the case.

With this configuration, even if the heat collecting pipe is made to be very thin and bendable, if reinforcement means are provided during assembly at the factory, the heat collecting pipe will not bend.
Furthermore, even if the entire device is vibrated during transportation, the lower surface of the heat collecting plate is supported from below by the reinforcing means, so that it does not bend. Furthermore, since the end plate and intermediate plate are not attached to the case,
The entire space between the intermediate plate and the end plate can be covered with a heat collecting plate.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 and 4. A plurality of heat collecting pipes 14 are attached to a plurality of heat collecting plates 13 whose lower ends are bent at a substantially right angle.
is fixed through the heat collecting pipe 14, and an upper header pipe 15 and a lower header pipe 16 are connected to both ends of the heat collecting pipe 14, which communicate the respective pipes. A flat intermediate plate 17 is disposed approximately in the middle of the heat collecting plates 13 arranged in parallel, and end plates 1 which are also flat plates are provided at both ends of the heat collecting plates 13 in the arrangement direction.
8a and 18b are arranged, and each heat collecting pipe 1
4 is penetrated. The heat collecting plate 13 is made of a material with high thermal conductivity such as an aluminum plate, and the intermediate plate 17 and end plates 18a and 18b are made of a strong material such as an iron plate.

Intermediate plate 17 and end plates 18a, 8
A notch hole is bored in the lower part of b at a position below the lower surface of the heat collecting plate 13, and a reinforcing hand 19 is slidably inserted through the notch hole. This reinforcing means 19 is fixed by the upper header pipe 15 and the header presser 20, and is screwed to the supporting means 22 provided at the bottom of the case 21.
A heat insulating cushioning material 23 is provided between the upper and lower header pipes 15, 16 and the reinforcing means 19, a heat insulating material 24 is provided on the bottom of the case 21, and a A transparent body 25 is fixed by a holding plate 26 so as to cover the entire surface.

In the above configuration, solar heat passes through the transparent body 25, is absorbed by the heat collecting plate 13, is conducted to the heat collecting pipe 14, is transmitted to the heat collecting medium flowing inside the heat collecting pipe 14, and is collected. The heat collecting plate 13 completely covers the space between the end plates 18a and 18b at both ends, and the transparent body 25
The solar heat that passes through is effectively absorbed. Furthermore, even if the heat collecting pipe 14 is thin and has weak mechanical strength, if the reinforcing means 19 is provided in the assembly at the factory, the heat collecting pipe 14 will not bend, and even vibrations during transportation of the entire device will cause the heat collecting plate to Since the lower surface of 13 is supported from below by reinforcing means 9, it will not bend. In addition, even if the temperature of the heat collecting part becomes high due to strong solar radiation and the amount of linear expansion of the heat collecting pipe 4 increases, the reinforcing means 1
9 with the upper header pipe 15 as a fulcrum, the end plates 18a, 18b and the intermediate plate 1
7 slides smoothly, heat collection pipe 1
No abnormal force is applied to 4, and reliability in terms of durability is further improved.

Furthermore, since the lower end plate 18b does not have the function of attaching to the case as in the conventional case, it does not need to be bent into an L shape and can be a flat plate, which saves space for brazing the lower head pipe 16 and the heat collecting pipe 14. Since the protrusion of the L-shaped lower surface can be reduced and the effective heat collection area can be increased by that distance, the heat collection performance can be further improved.

Effects of the Invention As described above, the solar heat collector of the present invention provides the following effects.

(1) Thinner heat collection pipes are cheaper, so if you use thinner pipes, you can increase the number of pipes to increase fin efficiency and improve heat collection performance without increasing costs. Moreover, even when the heat collecting pipe is constructed of a thin pipe, since the reinforcing means is used, the heat collecting plate can be supported from the lower surface to prevent the heat collecting pipe from bending or bending.

(2) The reinforcing means and the upper header pipe are fixed and the reinforcing means is fixed to the case, and the intermediate plate and end plate are not fixed to the case. It can cover all the spaces between
The effective heat collection area can be increased and heat collection performance can be improved.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a conventional solar heat collecting device, FIG. 2 is a perspective view of the main part of FIG. 1, and FIG. 3 is a longitudinal sectional view showing an embodiment of the solar heat collecting device of the present invention. FIG. 4 is a perspective view of the main part of FIG. 3. 13... Heat collection plate, 14... Heat collection pipe, 15...
... Upper header pipe, 16 ... Lower header pipe, 7 ... Intermediate plate, 18a, 18b ... End plate, 19 ... Reinforcement means, 22 ... Support means.

Claims (1)

[Claims] 1. A plurality of heat collecting plates housed in a case and having a plurality of heat collecting pipes fixed therethrough and arranged in parallel, upper and lower header pipes communicating the upper and lower ends of the heat collecting pipes, respectively; Consisting of an intermediate plate provided between heat collecting plates and an end plate provided at the lower end or both ends, the plate is provided below the heat collecting plate in parallel with the heat collecting pipe and passes through the middle plate and the end plate. A solar heat collecting device comprising reinforcing means fixed to the upper header pipe and supporting the reinforcing means on the case.