A kind of antifreeze solar heat collecting tube

Abstract

The invention discloses an anti-freezing solar energy heat collecting pipe. The anti-freezing solar energy heat collecting pipe comprises a heat collecting pipe body formed by an inner pipe and an outer pipe. A round groove is concentrically formed in one end of the inner pipe, a rotating shaft is arranged on the inner wall of the rough groove in a penetrating mode, and the rotating shaft and theconnecting part of the inner pipe are in rotating sealed connection. A stirring mechanism used for stirring water in the inner pipe at night is installed on the rotating shaft and comprises stirring blades fixedly connected to the end, located in the inner pipe, of the rotating shaft. According to the anti-freezing solar energy heat collecting pipe, photovoltaic panels are used for supplying powerto electromagnets in day time, winding energy storage is carried out on disc springs in day time, the disc springs release energy at night to make the stirring blades stir water in the inner pipe, the water in the inner pipe is kept flowing and prevented from icing, and bursting of the inner pipe is avoided; and reciprocating lead screws are driven to rotate through the disc springs and drive lead screw nuts to move, so that elastic scraping rings scrap water scale on the inner wall of the inner pipe, and the inner pipe can be kept with good heat conductivity.

Description

technical field [0001] The invention relates to the technical field of solar heat collecting tubes, in particular to an antifreeze solar heat collecting tube. Background technique [0002] A solar water heater is a device that uses the energy contained in sunlight to heat water, and is a type of renewable energy technology. Solar water heaters are widely favored by consumers because of their energy saving, high heating efficiency and low cost. [0003] However, solar water heaters are prone to freezing and cracking of water pipes in winter. This is because the water in the water pipes becomes larger in volume and decreases in density after freezing at low temperature. There are three: [0004] 1. The first method is to cover the water supply pipe with an insulation layer, but when the temperature is very low in winter, this method is difficult to effectively prevent the pipeline from freezing; [0005] 2. The second is to add a heating device to increase the temperature o...

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Problems solved by technology

[0004] 1. The first method adopts the water supply pipe to cover the insulation layer, but when the temperature is very low in winter, this method is difficult to effectively prevent the pipeline from freezing;

[0005] 2. The second is to add a heating device to increase the temperature of the pipeline, but this method requires a lot of equipment and consumes a lot of power consumption;

[0006] 3. The third method is to empty the pipeline, but this method wastes water and is inconvenient to use

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