JPS6212217Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a heat collecting plate holding device for a solar collector.

A conventional solar heat collector will be explained with reference to FIGS. 1 to 5. In FIGS. 1, 2, and 3, 1 is a circular glass tube, and a heat collecting plate 2 holding an approximately U-shaped heat collecting pipe 3 is fitted into the glass tube 1. The interior 9 of the glass tube 1 is evacuated, and the brazed portion 13 of the heat collecting pipe 3 is connected to the glass tube 1.
The end of the glass tube 1 on the opposite side from this sealed part is also sealed with a sealed part 5 provided therein. Further, as shown in FIG. 4, the heat collecting plate 2 was held in the glass tube 1 at the sunlight incident surface 6 with holders 4 set on both sides. The holder 4 has a fifth
As shown in the figure, it is made by bending and forming a wire rod, and the heat collecting plate 2 is sandwiched in the center, and both ends are supported on the inner peripheral surface of the glass tube 1, and a stainless steel wire with a spring action is used. There were many things that happened. Further, the outlet portion 11 of the heat collecting pipe 3 extending outward from one end of the glass tube 1 is connected to the inlet portion of another glass tube (not shown) having a similar configuration, and the outlet portion of the heat collecting pipe 3 is 11. A header case 7 is provided at the inlet portion 12, and a case 8 is provided at the other end of the glass tube 1.
is provided.

In the solar heat collector configured as described above, the heat collecting pipe 3 is placed on the lower side, the heat collecting plate 2 side is positioned on the incident side of the sunlight 14, and the heat collecting plate 2 collects heat. It heats the fluid such as water that flows through it.

In such a conventional solar heat collector, the heat collecting plate 2 is held from both sides by holders 4, and these are held on a sunlight incident surface 6 arranged in a staggered manner.
The holder 4 was in contact with the inner surface of the glass tube 1 at the sunlight incident surface 6. Therefore, when an impact load is applied to the glass tube 1 from outside the glass tube 1 at the sunlight incident surface 6, for example, when a foreign object hits the glass tube 1 during a typhoon, the holder 4 is attached to the inner surface of the glass tube 1. There was a problem in that the glass tube 1 was weaker in the contacting portions than in the portions not supported by the holder 4 and was more likely to break.

This idea ensures reliable collection by placing some of the holders on the side opposite to the sunlight incident side of the sunlight incident area, and other holders on the sunlight incident side of the non-sunlight incident area. The object of the present invention is to provide a heat collector plate holding device for a solar heat collector that can hold a heat plate, solves the above-mentioned problems, and has glass tubes that are resistant to shocks such as falling foreign objects from the outside.

An embodiment of this invention is shown below in Figures 6 to 1.
This will be explained using Figure 1. In these figures, reference numeral 4 denotes a holder; one of these holders 4 is placed at the center in the longitudinal direction of the sunlight incident surface 6, and the other one is placed in the non-sunlight incident area in the case 8. and is provided inside the glass tube 1. As shown in FIG.
a, and a semicircular support part 4b in the center, which is made by bending an elastic wire such as a stainless steel wire. The portion 4b is supported within the glass tube 1. The holder 4 on the sunlight incident surface 6 has a support portion 4b on the side opposite to the sunlight 14 incident side.
The holder 4 in the header 8 has a support portion 4b on the sunlight incident side. In addition, the outlet and inlet portions 1 of the heat collecting pipe 3 held and fixed to the heat collecting plate 2 are
Since the brazing parts 13 of 1 and 12 are sealed to the glass tube 1, the heat collecting pipe 3 of the heat collecting plate 2 can be
The end on the inlet side is connected to the glass tube 1 via this pipe 3.
is supported by The configuration of this embodiment other than those described above is the same as the conventional one shown in FIGS. The explanation will be omitted since it will be shown in the drawings to FIG. 11.

As described above, in this embodiment, the holder 4 of the heat collecting plate 2 does not support the inner surface of the glass tube 1 on the sunlight 14 incident side of the sunlight incident surface 6 part. Therefore, during a typhoon, foreign objects may enter the glass tube 1 from the outside.
There is no part where the inner surface of the glass tube 1 is supported by the holder 2, and there is no part that is vulnerable to external impact loads. Furthermore, since both ends and the center of the heat collecting plate 2 are supported by the glass tube 1, the heat collecting plate 2 can be supported more reliably than a plate without support at the center.

As explained above, in the solar collector plate holding device of this invention, some of the holders are placed on the side opposite to the sunlight incident side of the sunlight incident part, and other holders are placed on the side opposite to the sunlight incident side. Place it on the sunlight incident side of the incident part,
Since the heat collecting plate was held on the inner surface of the glass tube using each of the above-mentioned holders, although the heat collecting plate could be securely held on the glass tube, there was no impact from the outside on the sunlight incident side of the sunlight incident part of the glass tube. There are no parts that are weak against loads, the glass tube can be prevented from being damaged by foreign objects falling from the outside, and it can be used for a long period of time.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional plan view of a conventional solar heat collector, Fig. 2 is a longitudinal sectional side view of the same, Fig. 3 is a sectional view taken along the - line in Fig. 1, and Fig. 4 is a diagram showing a conventional solar heat collector and a holder. FIG. 5 is a perspective view of a conventional holder; FIG. 6 is a longitudinal sectional plan view of a solar collector equipped with a heat collector plate holder according to an embodiment of the invention;
FIG. 7 is a longitudinal sectional side view of the same, FIGS. 8 and 9 are sectional views taken along the - line and - line of FIG. FIG. 11 is a perspective view of a holder according to an embodiment of this invention. DESCRIPTION OF SYMBOLS 1... Glass tube, 2... Heat collection plate, 3... Heat collection pipe, 4... Holder, 5... Sealing part, 6... Sunlight incident surface, 7... Header case, 8... Case ,
9... Inside of glass tube, 10... Pipe, 11,
12...Output and inlet of the heat collecting pipe, 13...Brazing part, 14...Solar light. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] In a solar heat collector in which a heat collecting plate 2 and a heat collecting pipe 3 extending outside the glass tube 1 are provided in a circular glass tube 1, and the glass tube 1 is sealed with the inside 9 evacuated, some A holder 4 is placed on the side opposite to the sunlight incident side of the sunlight incident part, and another holder 4 is placed on the sunlight incident side of the sunlight non-incident part, and the above-mentioned A heat collecting plate holding device for a solar heat collector, characterized in that a heat collecting plate 2 is held on the inner surface of a glass tube 1 by each holder 4.