A solar water heater and its control method

Abstract

The invention discloses a solar water heater comprising a main control system and a self-cleaning water storage tank. The self-cleaning water storage tank is internally provided with a self-cleaning device and a water level monitoring module, the self-cleaning device comprises a decontamination main shaft and a sewage discharge pipe, the decontamination main shaft is provided with a plurality of decontamination auxiliary shafts, the ends, away from the decontamination main shaft, of the decontamination auxiliary shafts are provided with elastic decontamination heads, and a control motor is connected to one end of the decontamination main shaft. A control method of the solar water heater comprises the following steps that S100, the range of water yield in the self-cleaning water storage tank is set as [V1, V2] according to the volume V of the self-cleaning water storage tank of the solar water heater, V1 and V2 are less than V, and V1 is less than V2; S200, the range of water temperature in the self-cleaning water storage tank is set as [T1, T2], and T1 is less than T2; S300, the inner wall of the self-cleaning water storage tank is automatically cleaned at regular intervals; and S400, pre-descaling operation is carried out on water entering the self-cleaning water storage tank. Automation performance is high, operation is easy and convenient, and great convenience is brought towater utilization in daily life of people.

Description

technical field [0001] The invention relates to the technical field of solar water heaters, in particular to a solar water heater and a control method thereof. Background technique [0002] Solar water heater is a major industry in the application of solar energy achievements. It has quickly won the favor of consumers for its advantages of environmental protection, safety, energy saving, and sanitation. With the continuous improvement of people's living standards, solar water heaters have entered thousands of households. , solar water heaters absorb the sun's radiant heat, heat cold water, and heat water from low temperature to high temperature to meet people's hot water use in life and production. The use of solar water heaters saves energy while protecting the environment , reducing the cost of home life. [0003] Just as the application number is 201210501126.8 named as an invention of a solar water heater with heat energy exchange, the invention winds a coil in the sola...

AI Technical Summary

Problems solved by technology

[0005] (1) The water supply and water cut-off operations of solar water heaters need to be manually controlled by the user. The water supply starts when the tap is turned on, and the water supply stops when the tap is turned off. The operation is relatively simple, but it often occurs due to the negligence of the user that the water supply is excessive. , the water in the solar water heater returns to the bathroom through the overflow pipe, which will cause water to accumulate in the bathroom while causing water waste; in addition, the user cannot obtain the water level information in the solar water heater, and can only judge how much water is used based on life experience. Then decide whether it needs to be filled with water, so that the water in the solar water heater may run out, and the solar water heater may dry out, which may easily cause damage to the solar water heater;

[0006] (2) The water tank of the solar water heater is installed on the roof. If the water tank is used for a long time, scale is easy to accumulate on the inner wall of the water tank. The cleaning operation of the water tank is complicated and needs to be cleaned by a special person. If the solar water heater is not cleaned frequently, it will not only reduce its use value, It will also cause problems such as bursting and water leakage;

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