CN201028831Y - Concentrating solar collector - Google Patents

Abstract

The utility model belongs to the technical field of solar heat collectors, in particular to a concentrating solar heat collector. Its main technical features are: it includes a heat collecting plate, and also includes a heat conduction box, an inner heat conducting agent tube is arranged in the heat conducting box, an outer heat conducting agent pipe is arranged on the heat collecting plate, and the outer heat conducting agent pipe It communicates with the inner heat transfer agent pipe. As a further improvement of the utility model, the section of the heat collecting plate is parabolic, and a reflective layer is provided on its inner surface, and the outer heat conducting agent tube is located at the focal point of the reflected light of the heat collecting plate. The problem of low outlet water temperature and inconvenient use of the current concentrating solar heat collector is solved. It can be widely used in factories, mines, greenhouses, etc. to provide heat source and drying.

Description

Concentrating solar collector

technical field

The utility model belongs to the technical field of solar heat collectors, in particular to a concentrating solar heat collector.

Background technique

Saving energy and protecting the environment has become the theme of today's society. Solar energy is favored by people for its cleanliness and inexhaustibility. At present, most of the solar water heaters used by people to utilize solar energy use the following two methods to heat the water. First, the sunlight directly shines on the heat collecting tubes painted black on the outer layer, and the water in the heat collecting tubes is heated by natural sunlight. , and then store the hot water in the water storage tank, and release the hot water when needed; second, design the heat collecting plate as a concave surface, place a kettle, etc. at its focal point, and the inner surface of the heat collecting plate There is a reflective layer, which can use its reflection to the sunlight to gather the light and heat the water in the kettle to reach a very high temperature. However, the first method has low water temperature, and the maximum temperature is about 80° C.; although the second method can boil water, it is extremely inconvenient to use.

Utility model content

The technical problem solved by the utility model is to provide a concentrating solar heat collector with convenient use, high temperature and wide application.

The technical solution adopted by the concentrating solar heat collector of the utility model is as follows: it includes a heat collecting plate, and also includes a heat conduction box, an inner heat conducting agent tube is arranged in the heat conducting box, and an outer heat conducting agent tube is arranged on the heat collecting plate. agent pipe, and the outer heat transfer agent pipe communicates with the inner heat transfer agent pipe.

Its additional technical features are: the cross-section of the heat collecting plate is parabolic, and a reflective layer is provided on its inner surface, and the outer heat conducting agent tube is located at the focal point of the reflected light of the heat collecting plate. A transparent vacuum tube is wrapped on the outside of the outer heat-conducting agent tube. The outer surface of the outer heat-conducting agent pipe is provided with a black coating; the heat conduction tank is a heating water tank provided with a liquid inlet and a liquid outlet, and the inner The heat conduction agent tube is coiled at the position near the bottom of the heating water tank; a temperature control switch is provided on the liquid outlet; the liquid outlet is connected to the water storage tank; the heat transfer box is a drying box provided with a steam outlet , the inner heat-conducting agent tube is bent and coiled; the heat-collecting plate is connected to a motor through a transmission mechanism, and the motor is controlled by a focuser on the heat-collecting plate.

Compared with the prior art, the concentrating solar heat collector provided by the utility model has the following advantages: one, because the outer heat-conducting agent tube is arranged on the heat-collecting plate, the outer heat-conducting agent pipe and the inner heat-conducting agent The pipes are connected, and the outer heat transfer agent pipe and the inner heat transfer agent pipe are connected with heat transfer oil with a high boiling point. The items that need to be dried are dried; secondly, since the cross section of the heat collecting plate is parabolic, a reflective layer is provided on its inner surface, and the outer heat conducting agent tube is located at the focus of the reflected light of the heat collecting plate, and the heat conducting oil, etc. The temperature of the heat-conducting agent can reach about 300°C, which can heat the water in the heat transfer box into boiling water or high-temperature steam, providing heat sources for factories, mines, greenhouses, etc. Third, since the heat conduction tank is a heating water tank provided with a liquid inlet and a liquid outlet, the inner heat transfer agent tube is bent and coiled; a temperature control switch is arranged on the liquid outlet, and the liquid outlet and the water storage tank Connected, when the temperature reaches the set temperature, the temperature control switch is automatically turned on, and the hot water flows into the water storage tank for storage; Fourth, since the heat collecting plate is connected to the motor through the transmission mechanism, the motor passes through the focus on the heat collecting plate Instrument control, so that the collector plate is always at the best angle with the sunlight, improving the utilization of sunlight.

Description of drawings

Fig. 1 is the structural representation of the utility model concentrating solar heat collector;

Fig. 2 is the structural representation of heat collecting plate;

Fig. 3 is the cross-sectional view of heat collecting plate;

Fig. 4 is another structural schematic diagram with a heat transfer agent tube outside the vacuum tube;

Fig. 5 is a schematic structural view of the inner heat transfer agent pipe in the heating water tank;

Fig. 6 is a schematic structural diagram of a drying box.

Detailed ways

The structure and operating principle of the concentrating solar heat collector of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the concentrating solar heat collector of the present invention includes a heat collecting plate 1 and a heat conduction box 2, an inner heat conducting agent tube 3 is arranged on the heat conducting box 2, and an outer heat conducting agent pipe is arranged on the heat collecting plate 1 4. The outer heat transfer agent pipe 4 communicates with the inner heat transfer agent pipe 3 . Heat conduction agent such as heat conduction oil is installed in the outer heat conduction agent pipe 4 and the inner heat conduction agent pipe 3. Using solar energy, the heat collector plate 1 heats the heat conduction agent in the outer heat conduction agent pipe 4. The medium outside the heat-conducting agent pipe 3 performs heat exchange, and then flows into the outer heat-conducting agent pipe 4 for heating, so that the cycle reciprocates.

In order to increase the temperature of the outer heat transfer agent tube 4, as shown in Figure 2 and Figure 3, the cross section of the heat collecting plate 1 is designed as a parabola, and a reflective layer 5 is arranged on its inner surface, and the outer heat transfer agent tube 4 is located on the heat collecting plate 1 and placed at the focus of the reflected light. In order to keep warm and transmit light, a transparent vacuum tube 6 is wrapped on the outside of the outer heat-conducting agent tube. The outer surface of the outer heat transfer agent pipe 4 is provided with a black coating 7, which is more conducive to the absorption of light by the outer heat transfer agent pipe 4; in this way, the maximum temperature of the heat transfer agent such as heat transfer oil can reach about 300°C. The water in the heat conduction box can be heated into boiling water or high-temperature steam.

Of course, the outer heat transfer agent tube 4 can also be in the shape of a "U" as shown in FIG. 4 , and a transparent vacuum tube 6 is wrapped on the outside.

In order to provide heat sources for factories, mines, greenhouses, etc., the heat conduction tank is a heating water tank provided with a liquid inlet 8 and a liquid outlet 9, and the inner heat transfer agent tube 3 is coiled near the bottom of the heating water tank, which is beneficial to heating the liquid in the heating water tank. The coiling manner of the inner heat transfer medium pipe 3 may be shown in FIG. 5 . A temperature control switch 10 is provided on the liquid outlet 9; the liquid outlet 9 is connected to a water storage tank 11 with a large volume and heat preservation function. When the temperature reaches the set temperature, the temperature control switch 10 is automatically opened, and hot water flows into the water storage Store in tank 11.

As shown in FIG. 6 , in order to dry the articles, the heat conduction box 2 can be designed as a drying box with a steam outlet 12 . In order to increase the drying effect, the inner heat transfer agent tube 3 is bent and coiled.

In order to keep the heat collecting plate at the best angle with the sunlight all the time and improve the utilization rate of sunlight, the heat collecting plate 1 is connected with the motor 14 through the transmission mechanism 13, and the heat collecting plate 1 is provided with a focusing instrument 15, and the motor 14 Controlled by the focuser 15. The transmission mechanism 13 may be a worm gear transmission, or other known transmission mechanisms.

Claims (9)

1. concentrating solar collector comprises the thermal-arrest plate, it is characterized in that: also comprise hot conductive box, and thermal conducting agent pipe in this hot conductive box, being provided with, described thermal-arrest plate is provided with outer thermal conducting agent pipe, and described outer thermal conducting agent pipe is communicated with interior thermal conducting agent pipe.

2. concentrating solar collector according to claim 1 is characterized in that: the cross section of described thermal-arrest plate is parabola shaped, and the side is provided with reflector layer within it, and described outer thermal conducting agent pipe is positioned on the catoptrical focus of thermal-arrest plate.

3. concentrating solar collector according to claim 2 is characterized in that: the thermal conducting agent pipe outside is enclosed with transparent vacuum tube outside described.

4. concentrating solar collector according to claim 1 is characterized in that: described outer thermal conducting agent pipe lateral surface is provided with black coating.

5. concentrating solar collector according to claim 1 is characterized in that: described hot conductive box is the heating water tank that is provided with liquid-inlet and liquid outlet, and described interior thermal conducting agent pipe is coiled in the position of heating water tank near the bottom.

6. concentrating solar collector according to claim 5 is characterized in that: described liquid outlet is provided with temperature detect switch (TDS).

7. concentrating solar collector according to claim 5 is characterized in that: described liquid outlet is communicated with water tank.

8. concentrating solar collector according to claim 1 is characterized in that: described hot conductive box is the drying baker that is provided with steam (vapor) outlet, described interior thermal conducting agent canal curvature coiling.

9. concentrating solar collector according to claim 1 is characterized in that: described thermal-arrest plate is connected with motor by transmission mechanism, and this motor is by being positioned at the focusing instrument control on the thermal-arrest plate.

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