JPS59195059A - Solar heat collector - Google Patents

Abstract

PURPOSE:To make it possible to judge whether or not a reflecting plate is in a correct position by a method wherein the case of the solar heat collector provided with a heat collecting pipe and the reflecting plate for reflecting the sunlight upon the heat collecting pipe within a light transmissive outer cylinder, an indicating needle is attached to the heat collecting pipe. CONSTITUTION:The reflecting plate 9 is formed integral with the heat collecting pipe 8 through a C-shaped support rod 10b, a vertical rod 10a and a stop member 11 so that the reflecting plate 9 rotates relative to the rotation of the heat collecting pipe 8 in the circumferential direction. The indicating needle 13 is attached to the heat collecting pipe in such a manner that the indicating needle is always suspended perpendicularly due to gravity so as to oscillate freely. Further, the reflecting plate 9 is provided with a display section 15 adopted to display that the reflecting plate 9 is in a proper position. In case where the indicating needle 13 is deviated from the display section 15, it means that the reflecting plate 9 is not in the proper position and therefore, the heat collecting pipe 8 is rotated by using a tool to thereby position the reflecting plate 9 properly.

Description

Detailed Description of the Invention GeJ Industrial Field of Application The present invention is directed to a translucent external station (equipped with two heat collecting tubes and a reflector plate for irradiating sunlight onto the heat collecting tubes, at a temperature of about 100" to 200°C). Double solar heat collector C that enables medium-temperature heat collection.

ζ Exit] As shown in Fig. 1, the conventional medium-temperature heat collector includes a heat collecting tube (2) inside a translucent outer cylinder (1) and a reflector plate (3) that irradiates sunlight onto the heat collecting tube (2). and the heat collecting pipe (2) is connected to the outer cylinder (1
From the metal end plate (4) with the opening of 1 sealed, the tip of the heat collecting tube (2) protrudes from the outside (2), and the tip of the further protruding heat collecting tube (2) is connected to the inside of the inner tube (5a), which is made of a double inner and outer tube, and is heated by a heat medium such as water. The outer tube (5b) of the heat exchanger (5) through which liquid flows is connected to communicate with the outer tube (5b) and the heat collecting tube (2) (2 is a working liquid such as fluorocarbon that changes into two phases of gas and liquid. is sealed so that the heat collecting tube (2) can operate as a so-called heat pipe.

Therefore, in the conventional example ≦2, the heat collecting pipe (2) and the heat exchanger (5) are connected in a substantially T-shape when viewed from above, and when the heat exchanger (5) is installed horizontally, the reflection plate (3) is also manufactured with care so that the claws are horizontal, but the metal end plate (4) and the translucent outer plate (1) are heat-sealed using frit glass, etc., so each member It is difficult to accurately match the positional relationship between the two.

In general, a large number of C-double heat collectors are used, and the inner tubes (5aJ) of adjacent heat exchangers (5) are integrally connected to each other by brazing or using connecting fittings, but it is not possible to connect them. The heat exchanger part is installed on a substantially horizontal installation surface (H
However, due to manufacturing errors in the individual heat collectors 6, the individual reflectors (3) are not installed horizontally and are uneven as shown in Figure 2C2, making it difficult for the reflectors (3) to be installed properly. Since the position ≦ 2 devices, the heat collection performance as designed could not be expected.

Purpose The present invention is designed to improve the heat collection efficiency by moving the reflector to an appropriate position by simple means in the final installed state.

B) Structure The present invention has a heat collecting tube and a reflecting plate in a translucent outer cylinder, and the reflecting plate is attached to the heat collecting tube so that the reflecting plate rotates in conjunction with rotation in the circumferential direction of the heat collecting tube. A pointer is attached swingably to the heat collecting tube so that it can be lowered in the vertical direction by gravity at all times, while a reflector (: indicates that the reflector is in the correct position) is the pointer. A display unit is provided to display the relationship C2.

Therefore, if the pointer is misaligned with the display, the reflector is not in the correct position. In that case, if you turn the heat collecting tube with a tool, the reflector will rotate in accordance with C1, and the pointer and display will be in the correct position. By moving the reflector once until they match, the reflector can be placed in the correct position (two positions).

To explain one example based on two examples, Figures 6 and 5,
6) is a translucent outer cylinder made of glass or the like with an open end, and the opening is sealed with a metal end plate (7) to allow a view of the inside.
(8) is a heat collection tube made of copper or the like that is installed inside the outer periphery (6) and has one end passed through the end plate (forced) and the extrusion part is brazed. ≦It is designed to operate as a cocoon heat pipe by enclosing a working fluid that changes. (9
) is a gutter-shaped reflector plate that is installed inside the outside @ (6) and irradiates sunlight onto the heat collection tube (8). QO) is a support member that holds the heat collecting pipe (8) and the reflecting plate (9) inside the outer cylinder (6), and includes a vertical rod (10a) brazed to the heat collecting pipe (8) and erected, and the vertical rod. (10a) C-fixed outer cylinder (6) C-shaped support rod (10b) elastically adhered to the inner wall;
Both ends of the vc-shaped support fixture (10b) are secured to the locking member (1fJ) which is bifurcated at both ends C of the back surface of the reflection plate (9), and the heat collecting pipe (
8) and the reflecting plate (9) are integrated. (12) is an inner and outer double pipe (1
2a) (A heat exchanger consisting of 12bJ, outer tube (12b)
The inner tube (12a) is in communication with the heat collecting tube (8), which serves as a condensing part of the heat pipe, and the inner tube (12a) is designed to allow a heat medium liquid such as water to flow therethrough.

The heat collecting pipe (8) and the heat exchanger α2 are connected in a substantially T-shape (2), and the heat exchanger 0.21 and the reflection plate (9) are connected so that they are located horizontally (13). ) is the heat collecting pipe (8)
The pointer is fixed to the locking ring α (A) provided at the bottom of the , and is lowered vertically C double by gravity, and the lower end is attached to the reflector (9).
It is close to. This reflecting plate (9) ζ2 is the reflecting plate (9)
) is provided so that the pointer (13) indicates the proper position (horizontal position).In other words, when the reflector (9) is in the proper position, the tip of the pointer 03) indicates the position of the reflector. They are provided with colors or protrusions.

Therefore, the temporary number 2 manufacturing error (2) When the heat exchanger (121 is in the horizontal position, the reflector (9) is in the correct position (horizontal position)
If not, fix both the outer cylinder (6) and the heat exchanger Oz so that they do not move with the heat exchanger (one side horizontally doubled), and use a tool such as a pipe wrench to tighten the heat collecting pipe (8). Outer cylinder (6
), and rotate (twist) the heat collecting tube in either direction, the heat collecting tube (8) inside the outer periphery (6) will also rotate, and the reflecting plate (9) will also move in conjunction with it. The heat collecting tube (8) is made of copper and is heat treated and annealed for degassing, so the metal end plate (7) 1: Even if it is brazed, it will not twist at about 15 degrees. It is possible and inevitable.

As you rotate the heat collecting tube (8) in this way, the pointer (1)
31 is always hanging down due to gravity, but the reflector is rotated in the horizontal direction, and if the rotation is stopped when the pointer (13) is positioned above the display area provided on the reflector (9), the reflector (9) is placed at the proper position. In this case, multiple such heat collectors can be installed in parallel and the inner pipe (12a) of heat exchanger u2
Even if the heat collectors are connected together, the reflectors (9) of all the heat collectors are properly positioned relative to the concave horizontal installation surface as shown in FIG.

Figures 6 and 7 are views of other embodiments of the present invention, including a reflector (9).
When the lamp reaches the correct position, the tester (16), lamp lighting, or buzzer notification means will notify the correct position, and the heat collecting pipe (8) and reflector plate (9) are electrically insulated. The locking member (11) provided on the reflective plate (91C) is made of an insulating material and is insulated from the C-shaped support (10b).The protrusion α and the pointer (13) as a display portion provided on the reflective plate are
C2 so that it makes electrical contact with the lower end of the reflector plate (9).
Insulate the lead wire (L7) from the end plate (with 8-metic glue, etc.) and pull it out to the outside C1 and connect it to the tester (1).
8, and the pointer (131 is electrically taken out through the locking ring αa and the heat collecting pipe (8), so the heat collecting pipe (8)
) is connected to the tester aet= the lead wire α mallet, and when the reflector plate (9) is at the proper position, the tester (16) is actuated and recognized by the contact between the pointer α3) and the protrusion.

(f) Effect As mentioned above, it is possible to ensure the correct position of the reflector, and therefore even if a unit is constructed by connecting multiple heat collectors, the reflectors of all the heat collectors are properly positioned. The position can be maintained and a decrease in heat collection efficiency can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the conventional example, Fig. 2 is an explanatory diagram for explaining the problems of the conventional example, Fig. 6 is a perspective view of the present invention, Fig. 4 is a sectional view of the same, and Fig. 5 is the same. 6 is a perspective view of an assimilation embodiment, FIG. 7 is a sectional view thereof, and FIG. 8 is an end view of a plurality of heat collectors of the present invention assembled together. (6)...outer cylinder, (8)...heat collection tube, (9)・
...Reflector, U...Pointer, 09...Display section Fig. 5 8 6 Ichi- Fig. 7 15' Fig. 8 9i-, l

Claims (1)

[Scope of Claims] fil A metal material comprising a heat collecting tube and a reflecting plate for irradiating sunlight onto the heat collecting tube in a translucent outer cylinder, the heat collecting tube sealing an opening of the translucent outer cylinder. In a device that protrudes outward through the end plate and has a heat exchanger connected to the protruding end, the reflector is linked to the heat collector tube so that the reflector rotates in conjunction with the circumferential rotation of the heat collector tube. The solar heat collector further comprises a display section that indicates that the reflector is in a proper position in relation to the pointer. (2) The solar heat collector according to claim 1, wherein the display portion includes a projection formed from a reflecting plate so as to come into contact with the pointer. (3) The heat collecting tube and the reflector are connected electrically (double insulated), and power is supplied between the heat collecting tube and the reflector to ensure that the reflector is in the correct position when the display unit and the pointer come into contact. 3. The solar heat collector according to claim 2, further comprising a notification means for notifying.