Dustproof solar water heater

Abstract

The invention relates to a dustproof solar water heater. The dustproof solar water heater comprises a water storage tank, a support and heat collecting tubes. Each heat collecting tube sequentially comprises a flow guide tube, a heat absorbing film and a transparent tube from inside to outside. Each transparent tube can freely rotate around the respective axis. A rotating device is further fixedly installed on the lower side of each transparent tube. A central shaft of each rotating device is fixedly connected with the corresponding transparent tube. Each central shaft is further circumferentially provided with rotating cavities at equal intervals, and the spaces between the rotating cavities and the transparent tubes are vacuumized. An expansion tube is installed in each rotating cavity and extends in the radial direction of the corresponding central shaft. A piston ball is installed in each expansion tube and is in airtight contact with the wall of the expansion tube. The section, close to the corresponding central shaft, of each expansion tube is filled with evaporating liquid. The water heater can effectively prevent dust from falling onto the surfaces of the heat collecting tubes, thereby guaranteeing the cleanliness and brightness of the heat collecting tubes and further improving the heat collecting effect.

Description

technical field [0001] The invention relates to a water heater, in particular, a novel solar water heater. Background technique [0002] A water heater is a tool that provides hot water for a limited range. After years of development, water heaters are divided into the following categories: storage electric water heaters, instant electric water heaters, instant electric water heaters, gas water heaters, solar electric water heaters and air Source water heaters; among them, solar water heaters are favored by the majority of users for their advantages of environmental protection, energy saving, and convenience; however, traditional solar water heaters still need to pay attention to many problems during use: First, it needs regular system drainage to prevent pipelines At the same time, the water tank needs to be cleaned regularly to ensure clean water quality; second, the solar collector tube needs to be cleaned and wiped regularly to ensure a high light transmittance; at the...

AI Technical Summary

Problems solved by technology

[0002] A water heater is a tool that provides hot water for a limited range. After years of development, water heaters are divided into the following categories: storage electric water heaters, instant electric water heaters, instant electric water heaters, gas water heaters, solar electric water heaters and air Source water heaters; among them, solar water heaters are favored by the majority of users for their advantages of environmental protection, energy saving, and convenience; however, traditional solar water heaters still need to pay attention to many problems during use: First, it needs regular system drainage to prevent pipelines At the same time, the water tank needs to be cleaned regularly to ensure clean water quality; second, the solar collector tube needs to be cleaned and wiped regularly to ensure a high light transmittance; at the same time, the cleaning work should be done in the early morning or evening when the sun is not strong and the temperature is low To prevent the transparent tube outside the heat collecting tube from being crushed by cold water; third, it is necessary to regularly check the vacuum degree of the heat collecting tube to ensure the heat preservation and heat conduction effect of the heat collecting tube; therefore, there are many things that need to be improved in traditional solar water heaters

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