JPS6022277Y2 - solar water heater - Google Patents

Description

[Detailed description of the invention] This invention relates to a solar water heater that uses multiple heat collecting plates with an inverted cross-section. To provide a solar water heater capable of preventing corrosion of a heat collecting plate.

In a conventional solar water heater of this type, as shown in FIG. Since the upper end is bent toward the side, rainwater or condensation water that enters the folded corner 24 collects in a part of the bent corner 24 and forms a water puddle 25. As a result, during long-term use, the water puddle 25 forms a cross-sectional collection. This had a major problem in that the hot plate 22 began to corrode.

In view of the above-mentioned conventional problems, the present invention solves the conventional problems by creating a structure in which no water pools are formed in a part of the bent corner of the heat collecting plate.The present invention will be described below as an example. The explanation will be based on a drawing showing the following.

In FIGS. 1 to 3, 1 is a heat pipe, and the evaporation part 2 of this heat pipe 1 is attached to a substrate 4 via a heat insulating material 5 inside a heat collector body 3 installed at an angle. Furthermore, a glass body 6 that transmits sunlight is disposed on the upper surface of the heat collector body 3.

The upper part of the evaporating section 2 of the heat pipe 1 passes through a hot water storage tank 7 disposed above the heat collector body 3, and this penetrating portion is sealed by a sealing member 8.

The other end of the heat pipe 1 is exposed to the inside of the hot water storage tank as a condensing section 9, and is immersed in water 10 of the hot water storage tank 7.

Reference numeral 11 indicates a plurality of heat collecting plates, and the plurality of heat collecting plates 11
The relationship between the heat pipe 1 and the heat pipe 1 is as shown in FIG.
The evaporation parts 2 of the plurality of heat pipes 1 are connected to the plurality of heat collecting plates 11.
It penetrates through the heat collecting plates 11 and is fixed to each heat collecting plate 11 one by one.

Further, the lower end portion 11' of the heat collecting plate 11 is bent at a substantially right angle so as to cover the gap between adjacent heat collecting plates 11, and the bending direction is as shown in FIGS. 1 and 3. A gap 12 is provided at the tip of the heat collector body 3 toward the side of the lower end.

Reference numeral 13 denotes a working fluid sealed in the heat pipe 1.

The operation in the above configuration will be explained.

The sunlight passes through the glass body 6, and most of it is absorbed by the heat collecting plate 11, but some of it is reflected.

In this case, since the reflected light is absorbed again by any part of the heat collecting plate 11 having an angled cross-section, almost all of the sunlight can be absorbed by the heat collecting plate 11.

In addition, the heat absorbed by the heat collecting plate 11 reaches the contact area between the heat collecting plate 11 and the evaporation part 2 of the heat pipe 1, and the amount of heat other than the loss due to the temperature drop due to contact heat resistance at this part is absorbed by the heat pipe. The working fluid 13 sealed in the container 1 is boiled to generate steam.

This steam is conveyed to the condensing section 9 of the heat pipe 1, and is cooled and condensed in the condensing section 9, thereby transferring heat to the water 10 in the hot water storage tank 7 and warming the water 10.

The working fluid 13 liquefied by condensation is then transferred to the heat pipe 1
The liquid flows down through the interior, returns to the evaporation section 2, evaporates again, and repeats the above-mentioned operation.

Here, rainwater that has entered the heat collector body 3 and dew water that has adhered to the surface of the heat collector plate 11 flows downward on the heat collector plate 11, and then flows down through the gap 12 shown in FIG. Therefore, the bending corner part 1 of the heat collecting plate 11
There's no way I'll get stuck at 4.

In the above embodiment, a heat pipe is used as the heat collecting part, but a heat collecting pipe in which water or a heat medium flows in a general pipe may be used in the same manner as in the above embodiment. It has the following effects.

As described above, according to the present invention, the lower ends of a plurality of heat collecting plates are bent at a substantially right angle so as to cover the gap between adjacent heat collecting plates, and the direction of the bending is set to the direction of the heat collecting plate. Because the lower end is oriented toward the side, rainwater that enters the collector body that is installed at an angle and dew water that adheres to the surface of the heat collector plate does not accumulate in a part of the bent corner as in the conventional case. As a result, corrosion of the heat collecting plate due to water accumulation is eliminated, and its durability can be significantly improved.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a heat pipe type solar water heater showing an embodiment of the present invention, Fig. 2 is an enlarged perspective view of the main parts of the water heater, and Fig. 3 is an enlarged longitudinal sectional view of the main parts. , FIG. 4 is an enlarged sectional view of a main part of a conventional solar water heater. 1... Heat pipe, 3... Heat collector body, 11... Heat collecting plate.

Claims (2)

[Scope of utility model registration request] (1) A plurality of heat pipes are arranged in a heat collector body arranged at an angle, and the plurality of heat pipes are passed through a plurality of heat collection plates and are fixed to each heat collection plate, and A solar heating device characterized in that the lower end of the heat collecting plate is bent at a substantially right angle so as to cover the gap between adjacent heat collecting plates, and the bending direction is toward the side of the lower end of the heat collector body. Water heater. (2) The solar water heater according to claim 1, wherein the heat pipe is a heat collecting pipe.