JPS608284Y2 - solar heat collector - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a solar heat collector.

In recent years, in order to meet the demands for the development of energy-saving equipment and alternative energy to oil, research into solar heat utilization devices has been actively conducted.

Currently, solar water heaters are being used that collect solar heat into water, but heat radiates at night during the winter, sometimes causing freeze damage.

Since the heat collecting section is installed at a high place such as the roof, repair work is also required.

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and aims to provide a solar heat collecting device that prevents freeze damage, has a simple structure, reduces costs, and has good heat collecting efficiency. purpose.

FIG. 1 shows a heat collecting medium circulation circuit diagram of an example of the solar heat collecting device of the present invention.

Reference numeral 1 denotes a hot water storage tank, which is kept warm by a heat insulating material, and has an inlet pipe part 2 at the bottom and an outlet pipe part 3 at the top.

A heat exchange section 4 of a heat collection medium circulation circuit is provided at the lower part of the hot water storage tank 1.

A heat collecting medium flows through the heat exchange section 4 and passes through the pipe wall to the hot water storage tank 1.
Heat the water inside.

The heat collecting medium circulation circuit is formed by a heat collecting medium pipe 6 that connects the heat exchange part 4 and the solar heat collector 5, and a circulation pump 7 is provided in the middle of the heat collecting medium pipe 6.

The solar heat collector 5 is installed on the slope of the roof, etc., efficiently absorbs sunlight, and collects the solar heat on a heat collecting medium.

The cross-sectional shape of the solar heat collector 5 is partially shown in FIG.

The heat collecting medium flows through the central heat collecting medium conduit 8.

A heat insulating material 9 is provided below the heat collecting medium pipe line 8,
Transparent covers 10 are provided at intervals.

The heat insulating material 9 prevents heat loss due to conduction from the heat collection medium pipe line 8 to the solar heat collector 5 downward, and the transparent cover 10 prevents heat loss due to radiation from the heat collection medium pipe line 8 into the air. .

In the present invention, colored antifreeze is used as a heat collection medium in the heat collection medium circulation circuit.

Colored antifreeze is, for example, a mixture of water, ethylene glycol, propylene gellicol, methyl alcohol, isopropyl alcohol, Red No. 2, Red No. 102,
Those colored with dyes such as Red No. 105 and Green No. 3 are used.

Since the heat collecting medium is colored, when damage occurs to the heat exchange part 4, the hot water in the hot water storage tank 1 is colored, and the user is notified of the accident.

Furthermore, by forming the heat collecting medium conduit 8 with a transparent pipe or the like, solar heat can be directly collected into the heat collecting medium.

By mixing ethylene glycol or the like, it is possible to prevent freezing and destruction of the solar heat collector 5 and the like in winter.

A water pipe 11 is connected to the water inlet pipe section 2 of the hot water storage tank 1, and a hot water supply pipe section 12 is connected to the hot water outlet pipe section 3, which communicates with a hot water supply port 13.

When collecting solar heat, the circulation pump 7 is operated to circulate the heat collecting medium through the heat collecting medium circulation circuit.

The heat collecting medium is stored in the solar heat collector 5 while exchanging heat with the heat collecting medium pipe 8 warmed by solar heat, or directly absorbs solar heat to become hot water while flowing through the heat exchange section 4. Hot water is sequentially stored in the upper part of the hot water storage tank 1 by exchanging heat with the cold water in the lower part of the tank 1.

When using hot water in the hot water tank 1, for example, turn the opening/closing handle at the hot water supply port 13 and supply the hot water to the hot water tank 1 through the hot water pipe 12.
Use the hot water inside for washing your face, bathing, heating, etc.

When the hot water supply port 13 is opened, tap water is supplied from the water pipe 11 to the lower part of the hot water storage tank 1, and hot water at the top of the hot water storage tank 1 is pushed up and discharged from the hot water supply port 13.

When solar heat cannot be collected due to rain or cloudy weather, the circulation pump is stopped and the circulation of the heat collection medium is stopped.

When the circulation of the heat collecting medium is stopped, in winter, heat is radiated from the solar heat collector 5 and the temperature drops to below freezing, but since the heat collecting medium is a colored antifreeze, the solar heat collector 5 does not The heat medium pipe line 8 does not freeze.

Since the solar heat collector of the present invention has the above-mentioned configuration, it prevents the solar heat collector from freezing and breaking during the winter, and eliminates the need for troublesome repairs at high places such as roofs. .

Since the heat collecting medium is antifreeze colored red or green, if there is an accident that damages the heat exchange part of the heat collecting medium circulation circuit in the hot water storage tank, the coloring of the heat collecting medium will act as an alarm and prompt It is repairable, convenient in terms of maintenance, and increases safety.

Furthermore, since the solar heat collecting device of the present invention has a simple structure, it is less likely to break down and can effectively use solar heat to heat hot water by exchanging heat from the heat collecting medium to tap water, providing a useful device that saves energy at a low cost. It is possible to do so.

[Brief explanation of drawings]

FIG. 1 is a heat collecting medium circulation circuit diagram showing an example of the solar heat collector of the present invention; FIG. 2 is a sectional view partially showing the solar heat collector in FIG. 1; 1...Hot water tank, 2...Water pipe section, 3.
... Hot water pipe section, 4 ... Heat exchange section, 5 ...
...Solar heat collector, 6... Heat collection medium pipe, 7
... Circulation pump, ... Heat collection medium pipe line,
9...Insulating material, 10...Transparent cover,
11...Water pipe, 12...Hot water pipe, 1
3...Hot water inlet.

Claims (1)

[Scope of utility model registration request] A heat collection medium circulation circuit is formed between a hot water storage tank having an inlet pipe section and a hot water outlet pipe section and a solar heat collector, and an antifreeze colored red or green is added to the heat collection medium circulation circuit as a heat collection medium. A solar heat collector in which water is circulated, a water pipe is connected to the water inlet pipe, and a hot water supply pipe is connected to the hot water outlet pipe.