JPS5941495Y2 - solar heat collector - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a solar heat collector in which a liquid absorber for preventing bumping can be easily and reliably attached inside a heat pipe container.

Generally, as shown in Fig. 1, a solar heat collector is equipped with a translucent outer tube 1 whose inside is evacuated to a vacuum and is insulated from the outside. The outer tube 1 is installed in an oblique direction, and the heat pipe container 3 to which the heat collecting fins 2 are thermally connected is enclosed in the translucent outer tube 1, and the heat collecting fins 2 and the heat pipe container 3 are connected to each other. The upper end of the heat collecting element 4, that is, the heat supply end 5 is connected to the transparent outer tube 1.
It has been derived from the beginning.

Then, the heat pipe container 3, as shown in FIG.
It is formed by a heat collecting vibro with an open lower end face and a cap 7 that seals the lower end face of the heat collecting vibro.The lower end of the heat collecting vibro and the periphery of the cap 7 are fixed with a brazing material 8, The beet pipe container 3 and the working fluid 9 form a gravity-type beet pipe.

When the working fluid 9 receives solar heat through the beat pipe container 3 due to solar radiation indicated by the arrow in FIG. It moves upward and reaches the heat supply end 5 shown in Figure A, where it radiates heat, condenses and liquefies, and as shown in the same figure, the liquefied working fluid 9'' collects heat due to the action of gravity. It flows down the inner wall of the vibro and collects solar heat through its repeated action.

However, in a gravity heat pipe in which the working fluid 9 always remains at the bottom of the heat pipe container 3, when the working fluid 9 heated by solar heat reaches a certain temperature, as shown in FIG. As it bumps, it splashes toward the heat supply end 5 while emitting a liquid cylinder, rapidly hitting the heat collecting vibro, making it easier for erosion to occur on the upper inner wall of the heat collecting vibro and shortening its life. There are some drawbacks.

Then, inside the heat pipe container 3, a glass wool woven fabric,
It has been considered to prevent bumping by inserting a liquid-absorbing material having capillary action, such as asbestos fiber cloth or twisted rock wool cloth, from inside the working fluid 9 to above the liquid surface.

This idea was made with the above points in mind,
Next, this invention will be explained in detail with reference to the drawings from FIG. 5 showing two embodiments thereof.

First, FIG. 5 showing one embodiment will be explained.

In the figure, the same reference numerals as in FIGS. 1 to 4 indicate the same parts, 10 is a concave groove formed on the outer side of the lower end of the heat collecting vibro, and 11 is a working fluid bumping provided in the heat pipe container 3. It is a liquid absorbent for preventing liquid absorption, and is formed into a rod shape, and its lower end is located within the working fluid 9 stored in the lower part of the heat pipe container 3, and its upper end is located above the liquid level of the working fluid 9.

Reference numeral 12 denotes a core metal inserted into the liquid absorbent 11, and its upper and lower ends protrude from the upper and lower ends of the liquid absorber 11, respectively.

Reference numeral 13 denotes a bent piece formed at the lower end of the core bar 12, the bent end of which is hooked onto the upper part of the concave groove 10, and is interposed between the peripheral edge of the cap 7 and the concave groove 10, and is bent by the brazing material 8. Fixed.

Therefore, according to the embodiment, the concave groove 10 is formed on the outer side of the lower end of the heat collecting vibrator, and the bent piece 13 of the core bar 12 inserted into the liquid absorber 11 is connected to the peripheral edge of the cap 7 and the concave groove 10. By brazing between them, the liquid absorbent 11 for preventing bumping can be reliably and easily fixed inside the heat pipe container 3 consisting of the heat collection vibro and the cap 7 via the core bar 12.

Next, FIGS. 6 to 9 showing other embodiments will be explained.

In these figures, the same reference numerals as above indicate the same parts, and 6' is a heat collecting pipe whose lower end surface is open, and whose upper end is tapered and whose lower end surface is open.

Reference numeral 14 denotes an annular portion formed at the lower end of the core bar 12, which is approximately circular and has a larger diameter than the inner diameter of the heat collecting vibro', as shown in FIG. It is then press-fitted into the heat collecting vibro'.

Reference numeral 15 denotes a brazing material filled in advance on the inner surface of the cap 7, and the annular portion 14 press-fitted into the heat collecting vibro' is fixed to the cap 7 by the brazing material 15.

Therefore, according to the embodiment, by press-fitting the annular portion 14 formed at the lower end of the core bar 12 into the heat collecting vibro' and brazing it to the cap 7, the heat collecting vibro' is not processed. The liquid absorbent 11 for preventing bumping can be securely and easily fixed in the heat pipe container 3 consisting of the heat collecting vibro' and the cap 7 via the core bar 12.

Note that the shape of the annular portion 14 can also be made polygonal.

As described above, according to the solar heat collector of this invention, a liquid absorber for preventing bumping of the working fluid is provided in the heat pipe container filled with the working fluid, a core metal is inserted into the absorbent liquid, and the heat pipe By brazing the lower end of the core metal to the end of the container, the absorbent liquid for preventing bumping can be securely and easily fixed in the heat pipe container.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a solar heat collector using a normal heat collecting element, Fig. 2 is a perspective view showing the inside of Fig. 1, Fig. 3 is a cross-sectional view of the heat pipe shown in Fig. 2, and Fig. 4 Figure a is a sectional view showing the movement of the working fluid in Figure 3, Figure 3 is an enlarged view of a part of Figure A, Figures 5 to 9 are implementations of the solar collector of this invention. Examples are shown, FIG. 5 is a sectional view of the main part of one embodiment, FIG. 6 is a sectional view of the main part of another embodiment, and FIG. 7 is a sectional view showing press-fitting of the annular part of FIG. 8 is an exploded perspective view of FIG. 6, and FIG. 9 is a sectional view of FIG. 8. 3...Heat pipe container, 6,6'...
・Heat collection pipe, 7... Cap, 9...
- Hydraulic fluid, 10... Concave groove, 11...
Liquid absorbent, 12... Core bar, 13... Bent piece, 14... Annular portion, 15... Brazing metal.

Claims (1)

[Claims for Utility Model Registration] ■ A liquid absorbent for preventing bumping of the working fluid is provided in a heat pipe container filled with a working fluid, a core metal is inserted into the liquid absorbent, and the end of the heat pipe container is A solar heat collector in which the lower end of the core metal is brazed to the part. ■ A heat pipe container is formed of a heat collecting pipe with an open lower end surface and a cap that seals the lower end surface, a concave groove is formed on the outside of the lower end of the heat collecting pipe, and a lower end of the core metal is formed with a concave groove. 2. The solar heat collector according to claim 1, wherein a bent piece is formed in the cap, and the bent piece is brazed between the peripheral edge of the cap and the concave groove. ■ A heat pipe container is formed by a heat collector eve with an open lower end surface and a cap that seals the lower end surface, a brazing material is attached to the inner surface of the camp, and the heat collecting pipe is attached to the lower end of the core metal. The solar heating device according to claim 1, wherein an annular portion having a diameter larger than the inner diameter of the pipe is formed, the annular portion is press-fitted into the heat collecting pipe, and the annular portion is brazed to the cap. Heat collector.