JPS5930860Y2 - solar heat collector plate - Google Patents

Description

[Detailed explanation of the idea] This invention relates to solar heat collecting plates.

Conventional heat collecting plates have a large number of water passages inside, and upper and lower headers are welded to the upper and lower ends of the water passages, so there are many welded points and there is a greater risk of water leakage. .

In addition, there was a risk that the water in the water channels and the upper and lower headers would freeze at night in winter, damaging the heat collecting plates.

This invention has been made in view of these points, and the object is to provide a solar heat collecting plate that is free from the risk of getting wet with water and also free from damage due to freezing.

In the heat collecting plate according to this invention, a heat transfer part to be attached to a water pipe is provided at the upper end of the heat collecting plate, and a hollow passage extending from near the heat transfer part to the lower end is installed inside the heat collecting plate. The working fluid for the heat pipe is sealed inside.

This invention will be specifically explained below with reference to illustrated examples.

In addition, in this specification, regarding the hierarchical relationship,
The upper part of the figure will be referred to as the upper part of the heat collecting plate.

In FIGS. 1 and 2, reference numeral 1 denotes a rectangular aluminum plate constituting a heat collecting plate according to this invention, and a heat transfer part 2 having a cylindrical heat transfer part 2 in the width direction at the upper end is a water pipe 3. It is attached closely to the

Note that the shape of the heat transfer part 2 is not limited to a cylindrical shape, and as shown in FIG.
As shown in FIG. 5, the cross section may be arcuate.

4 prints an anti-adhesion material in the desired shape on one of two aluminum plates, presses the other plate onto this surface, and then introduces fluid pressure into the non-bonded part to form it into a tube shape. a plurality of hollow channels produced by the so-called roll-bonding method, which are parallel to each other and extend in the longitudinal direction, the lower end of each being formed at the same time as the hollow channel 4, also by the roll-bonding method; They are communicated by a lower header 5.

Note that the hollow passage 4 may be formed by a method other than the roll bonding method, such as a tube expansion method or an extrusion method, and as shown in FIG. In this case, the header is of course unnecessary.

A required amount of working fluid for the heat pipe is sealed in the hollow passage 4 .

The sealing position is preferably at the lower end of the hollow channel 4, but is not limited thereto.

Enclosure of the working fluid can be accomplished by known methods.

A wick may be provided within the hollow channel 4.

When the hollow passage 4 is formed by the roll bonding method, the only welded portion is the part where the working fluid is sealed.

Further, in the case of the tube expansion method, welding may be performed only at the connection portion of the lower header, and in the case of the extrusion method, the lower header and the lower end of the hollow passage are connected via a connecting pipe.

The solar heat collector having the above configuration is placed on the roof with the heat transfer section 2 facing upward.

The heat collecting plate may also be placed on the roof in a storage case.

In this case, the heat yield is somewhat better. Furthermore, the heat collecting plate may be coated with a synthetic resin film that is highly weather resistant.

As described above, according to the heat collecting plate of this invention, the heat transfer part 2 attached to the water pipe 3 is provided at the upper end, and the hollow passage 4 extending from near the heat transfer part 2 to the lower end is provided inside. Because there are
There are very few welded parts, so there is no risk of water leakage.

In addition, since the working fluid for the heat pipe is sealed in the hollow passage, the heat acquired by the heat collecting plate can be transferred to the water pipe 3 by the same action as the heat pipe. can be obtained.

In addition, the heat collecting plate can be made lightweight, so that it can be easily attached to the roof and other operations.

Moreover, since the working fluid does not freeze even at night in winter, there is no risk of freezing and damage to the heat collecting plate.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, in which Fig. 1 is a front view of the heat collecting plate, Fig. 2 is a sectional view taken along line III in Fig. 1, and Fig. 3 is a sectional view corresponding to Fig. 2. 4 is a front view corresponding to FIG. 1, and FIG. 5 is a sectional view taken along the line v--v in FIG. 4. 1...Heat collecting plate, 2...Heat transfer part, 3...
... Water pipe, 4 ... Hollow passage.

Claims (1)

[Scope of utility model registration request] A heat transfer part 2 attached to the water pipe 3 is provided at the upper end of the heat collection plate, and a hollow passage 4 extending from near the heat transfer part 2 to the lower end is installed inside the heat collection plate, and a heat pipe is installed in the hollow passage 4. A solar heat collector plate that is filled with a working fluid.