Pressure-free antifreezing water-saving solar water heater capable of automatically discharging hot water at first

Abstract

The invention provides a method which causes a pressure-free antifreezing water-saving solar water heater to automatically discharge hot water at first to prevent freezing and saving water, belonging to the technical field of solar energy application. The method is characterized in that a water tank is provided with a water surface controller, and the upper part of the side surface of the water tank is provided with a water outlet and a discharging tube. The surface controller is provided with an inlet tube and an air vent, the lower end and one side of the lower end of the inlet tube are respectively provided with a valve, and the upper end of the discharging tube is provided with an n-shaped tube; the arrangement of the n-shaped tube can form siphon principle to drain off water and prevent cold water in the water tank from overflowing due to thermal expansion; air in the discharging tube flows downwards; the position of the water surface in the water tank is constant; the upper water surface and the lower water surface in the water surface controller respectively show the states of working and halting of the water heater; the upper surface is higher than the top of the n-shaped tube, and the lower surface position is lower than the water surface position in the water tank. The air vent is kept to have no pressure; the water surface controller guarantees automation; the water outlet on the upper part of the side surface of the water tank firstly discharges hot water, and two valves ensure that the functions of preventing freezing and saving water of the solar energy water heater.

Description

(1) Technical field [0001] The invention relates to the application technology of solar energy, in particular to a method for transforming a pressureless solar water heater into automatic operation, hot water first, antifreeze, water saving and anti-vacuum tube bursting. (2) Background technology [0002] The pressureless solar water heater is basically manual operation, which not only wastes water, time and energy, but also has disadvantages such as the first out of cold water, no antifreeze, and easy bursting of vacuum tubes. (3) Summary of the invention [0003] The technical task of the present invention is to provide a method for transforming the pressureless solar water heater with first cold water out of manual operation into automatic operation, first out hot water, anti-freezing, water saving and anti-vacuum tube bursting, which completely solves the above-mentioned technical existence Shortcomings. [0004] The technical solutions adopted by the present invention to solve...

AI Technical Summary

Problems solved by technology

[0002] Pressureless solar water heaters are basically operated manually, which not only wastes water, time and energy, but also has disadvantages such as cold water coming out first, no antifreeze, and vacuum tubes are easy to burst.

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