Cold water return and reuse system for solar water heater

Abstract

The invention provides a cold water return and reuse system for a solar water heater, which includes an air pressure supplementary device, a gas storage device and a control module; When the air pressure threshold is reached, the gas storage device is replenished with gas; the gas output end of the gas storage device is connected to the output end of the water heater, and is used for controlling the temperature of the water in the water pipe between the water heater outlet and the water output end of the water heater under the control of the control module. When the water temperature is lower than the preset water temperature threshold, air is released to the output end of the water heater, and the water in the water pipe between the outlet of the water heater and the output end of the water heater is pressed back to the water heater. On the basis of not changing the structure of the original solar water heater, the air pressure is used to press the water back into the water heater when hot water is not used, which not only greatly improves the user experience, reduces the waiting time, but also achieves the purpose of cold water recycling and saves water resources .

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a solar water heater cold water backflow reuse system. Background technique [0002] With the advancement of science and technology and the improvement of people's living standards, solar water heaters have already entered the homes of ordinary people. In life, when people need to use the hot water in the solar water heater, they must first let off the cold water remaining in the drain pipe. The user not only needs to wait for a period of time like this, also makes the waste of water resources. [0003] As we all know, the era when water was regarded as inexhaustible has passed, and the water crisis has become a serious fact that today's society has to face. Take an ordinary family as an example: if the solar water heater is used 5 times a day, and 3 liters of water is wasted each time, then the annual waste of water exceeds 5 cubic meters. From a national pe...

AI Technical Summary

Problems solved by technology

Take an ordinary family as an example: if the solar water heater is used 5 times a day, and 3 liters of water is wasted each time, then the annual waste of water exceeds 5 cubic meters. From a national perspective, this undoubtedly causes a huge amount of water resources. waste

[0004] At present, the treatment method for the cold water in the drainage pipe of the solar water heater is mainly the modification of the solar water heater, which has a large economic cost and a low recovery efficiency of cold water

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