A water-saving device and method for controlling water temperature based on solar water heating system

Abstract

The invention relates to a solar water heater, in particular to a water-temperature-controllable water saving device based on a solar water heating system, and the water-temperature-controllable water saving device is used for heating and utilizing before-use invalid hot water. The water saving device is arranged in a hot water pipeline of a solar water heater; after being mixed by virtue of a cold-hot water mixture spherical valve, effluent water in the hot water pipeline and effluent water of a cold water pipeline are sprayed out of a nozzle; the water saving device comprises a temperature control valve, a heating insulation device, a storage battery and a solar cell panel, wherein the heating insulation device is connected with the storage battery; the solar cell panel is connected with the storage battery; the temperature control valve is capable of controlling the storage battery to heat or stop heating the heating insulation device according to a temperature signal provided by the heating insulation device. The device can be applied to all solar water heating system devices with a 'before-use available hot water wasting' phenomenon, is mainly applied in household, office buildings, office premises, hotels and the like, and furthermore can be applied to an electric water heater device after being slightly improved.

Description

technical field [0001] The invention relates to a solar water heater, in particular to a water-saving device and method based on a solar water heating system with controllable water temperature, which is used for heating and utilization of "ineffective hot water before use". Background technique [0002] The solar water heater saves energy, which makes it quickly popularized and used, but it saves energy and also wastes a lot of clean water; the wasted water comes from the cold water stored in the hot water pipe connected between the solar water heater and the water outlet. It is called "ineffective hot water", and this part of invalid hot water is mostly wasted; according to calculations, if the length of the water heater tank is 5 meters from the water outlet, 3 to 4 liters of invalid heat will be drained before each use in summer. Water; 7 to 8 liters of invalid hot water will be wasted before each use in winter. According to calculations by energy assessment agencies, m...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of wasting invalid hot water in water heaters, some manufacturers have introduced products such as solar hot water pipe emptying valves and hot water pipe circulation devices to eliminate or reduce the "ineffective hot water" of solar water heaters and achieve the purpose of saving water; but these products There are disadvantages such as high cost, easy damage, low safety indicators, poor flexibility and environmental friendliness, and difficult systemization, so it has not been widely promoted

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