JPS5919246Y2 - solar collector - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved structure of a heat collector in which a heat receiving part of a heat pipe is disposed within a light-transmitting outer cylinder, and a heat supply part is made to protrude from the outer cylinder.

Conventionally used heat pipes are made of copper material.

The reason for this is that it has good thermal conductivity and high corrosion resistance when it comes into contact with water, which is a heat medium, in the heat supply part.

However, there is a drawback that the pressure resistance is not very good.

However, steel is one of the more expensive industrial metal materials, and is one of the materials whose price is subject to large fluctuations and whose cost is difficult to stabilize.

Solar collectors must be as inexpensive as possible from the standpoint of energy conservation.

However, as long as copper material is used, there is a limit, so the present invention uses inexpensive iron or iron alloy instead of copper material. It is a light-sensitive outer cylinder, and the open end has a nickel-chromium alloy end plate 3 with a copper connecting tube 2 attached to it with a frit glass 4.

The inside of the outer cylinder 1 is evacuated using the exhaust tip pipe 5 attached to the connecting pipe 2, or is filled with an insulating gas such as nitrogen gas.

6 is a heat pipe made of iron or iron alloy, in which a heat receiving part 6a is disposed inside the outer cylinder 1, a heat supply part 6b penetrates the inside of the connecting pipe 2 and projects outside the outer cylinder, and the penetrating part is brazed. In the heat supply section 6b, a pipe 7 having a large diameter and made of a corrosion-resistant material such as copper is fitted onto the outer periphery of the tip of an iron heat vibro projecting from the connecting pipe 2 and is brazed.

Although the iron heat vibro between the pipe 7 made of corrosion-resistant material and the tip of the connecting pipe 2 is exposed, this exposed portion is covered with brazing material 8 when brazing the pipe 7 made of corrosion-resistant material, so there is no fear of rust.

Heat collecting fins 9 made of iron or iron alloy are brazed to the heat receiving portion 6a.

10 is a hot water storage tank that stores a heat medium such as water;
1 is a protruding type.

A sealing surface 11a is formed at the tip of the connecting tube 11, and a threaded portion 11b is provided on the outer periphery.

Reference numeral 12 denotes a holding metal fitting attached to the outer periphery of the connecting tube 2 and having a facing surface 12 a facing the sealing surface 11 a of the connecting tube 11 . Reference numeral 13 denotes a tightening nut attached to the outer periphery of the connecting tube 2 .

Then, the pipe 7 made of corrosion-resistant material, which becomes the heat supply part 6b, is connected to the connecting tube 1.
1 into the tank 10, and the opposing surface 1 of the holding fitting 12
2a to face the sealing surface 11a of the connecting tube 11.

Then, the sealing surface 11a, the opposing surface 12a, and the opposing surface 1
A sealing 14 is interposed between 2a and the tightening nut 13, and the heat collector is detachably attached to the tank 10 by screwing the tightening nut 13 into the threaded part 11b of the connecting tube 11. When disassembling, the tightening nut 13 is removed.

Since the present invention is constructed as described above, the intended purpose can be achieved.

Also, since the pipe made of corrosion-resistant material is inserted into the heat medium, there will be no rust etc. Also, even if a part of the iron heat pipe part is exposed, when brazing the pipe made of corrosion-resistant material, it will not rust. Since it is covered, there is no corrosion from this part.

Furthermore, since the pipe made of a corrosion-resistant material has a larger diameter than the iron pipe, heat transfer to the heat medium is improved, and the vaporization-condensation action of the heat pipe can be performed smoothly.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view of the heat collector of the present invention, and FIG. 2 is an enlarged sectional view of the same essential part. 6...Heat pipe, 11...Connecting tube, 2...Connecting pipe, 1...Translucent outer tube.

Claims (2)

[Scope of utility model registration request] (1) The heat absorbing part of the heat pipe is housed in a translucent outer cylinder filled with a vacuum or an insulating gas, and the heat supply part protrudes from the translucent outer cylinder and plunges into the heat medium to be absorbed by the heat absorbing part. The heat pipe is configured such that the inner part of the translucent outer cylinder is made of an iron pipe, and the part that is plunged into the heat medium is made of a corrosion-resistant material for the heat medium. A solar collector featuring: (2) The solar collector according to the preceding item, which is formed by forming a pipe made of a corrosion-resistant material to a diameter larger than that of an iron pipe.