Solar water heater capable of achieving automatic cleaning and freezing prevention

Abstract

The invention relates to the technical field of solar equipment, in particular to a solar water heater capable of achieving automatic cleaning and freezing prevention. The solar water heater comprises a water storage tank, a heat collection pipe, a cleaning mechanism and an anti-freezing assembly. The cleaning mechanism comprises an inner circulation pipeline, a water storage tank cleaning assembly and a heat collection pipe cleaning assembly. The inner circulation pipeline comprises a water feeding pipe and a water discharging pipe, a water return pipe is arranged between the water feeding pipe and the water discharging pipe, and a cleaning agent feeding opening and a water pump are arranged on the water return pipe. The water storage tank cleaning assembly is arranged at the bottom of the water storage tank and connected with the inner circulation pipeline. One end of the heat collection pipe cleaning assembly is arranged in the water storage tank and connected with the inner circulation pipeline, and the other end of the heat collection pipe cleaning assembly is arranged in the heat collection pipe. The solar water heater can automatically clean away water scales in the water tank and the heat collection pipe, and the trouble of disassembly and cleaning is avoided. In addition, by means of the inner circulation pipeline and the anti-freezing assembly, freezing prevention of the upper water pipe, the lower water pipe and the heat collection pipe can be achieved in cold weather, and water using inconvenience and economic losses caused by low temperature weather are avoided.

Description

technical field [0001] The invention relates to the technical field of solar energy equipment, in particular to a solar water heater capable of automatic cleaning and antifreezing. Background technique [0002] Solar water heaters convert sunlight energy into heat energy, and heat water from low temperature to high temperature, so as to meet the hot water use in people's life and production. As the water in the solar water heater is continuously heated, the concentration of calcium and magnesium salts in the water increases. When their concentration is exceeded, they will be precipitated from the water and form precipitates. Secondly, bicarbonates will be decomposed by heat to form insoluble In addition, as the temperature rises, the solubility of certain salts gradually decreases, and precipitates are precipitated. Finally, impurities in tap water and dirt formed after the death of microorganisms produced by water heaters due to long-term use. The above-mentioned sediments...

AI Technical Summary

Problems solved by technology

[0003] At present, the method of cleaning the scale of the water tank and the heat collecting pipe is to climb to the roof, and disassemble it on site to completely remove the scale of the water tank and the heat collecting pipe, which is time-consuming and laborious, and the safety of the operators cannot be guaranteed.

And in winter, the upper and lower water pipes often freeze, which brings inconvenience to water use. In extreme weather or infrequent use, the bottom of the heat collecting pipe may freeze and damage the heat collecting pipe.

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