Water-saving anti-freezing device of solar water heater system

Abstract

The invention relates to a water-saving antifreezing device in an unseal type solar water heater system. The device mainly comprises an electric control valve and a bypass air duct, and is arranged below a water tank. An upper port and a lower port of the electric control valve are connected with water inlet mains and outlet mains of the water tank; or the upper port and the lower port of the electric control valve are respective provided with an upper connector and a lower connector which are respectively connected with the water inlet and the water outlet, and the water inlet mains and the water outlet mains of the water tank; the lower port of the bypass air duct is communicated with the water inlet mains and the water outlet mains at the lower end of the electric control valve or communicated with the lower connector; while the upper port of the bypass air duct runs through the mains at the upper end of the electric control valve or through the upper connector into the water tank,and the upper port is exposed above the overflow surface of the water body in the water tank and is communicated with the atmosphere via the overflow pipe of the water tank. The pipeline emptying function of the invention is more reliable, the pipes is frozen in winter, and hot water can be supplied instantly as the valve is turned on, therefore, the system has better water saving and anti-freezing effect; the failure rate of the system is low, and the service life is long. The invention effectively solves the problems that the latus rectums of the prior exhaust valves are small, easy gas blocking, easy impeded water flow and easy water leakage, and frozen plugging, and the like.

Description

technical field [0001] The invention relates to a component device of a solar water heater system, in particular to a water-saving antifreeze device in a non-enclosed solar water heater system. Background technique [0002] At present, the water heater storage tanks of the non-enclosed solar water heater system are almost all installed on the roof of the user's house, because the hot water is taken by the potential energy with the height difference. All components of the whole system must be connected by outdoor and indoor pipelines. If no other measures are taken, there will always be water in the pipelines. Therefore, when users need to use hot water, they must first let go of the cold water in the pipeline to obtain hot water from the water heater storage tank, and after use, the hot water in the pipeline gradually becomes cold water corresponding to the ambient temperature. Every time such a repeated process not only wastes water resources, but also wastes heat energy. ...

AI Technical Summary

Problems solved by technology

After actual use, this technology also has the following defects: Evacuation requires power-on, and once the instantaneous power failure function fails; the scale formed by hot water will affect the reliability of the piston body’s movement; and the permanent magnet’s magnetic field weakens over time. The reliability of the piston head switch; the plastic ventilation hose used is not only inconvenient to install, but also easy to cause water pollution if soaked in hot water for a long time.

[0005] It can be seen that the manufacturers of solar water heaters have focused their energy on the research on the improvement of the valve's functionality and reliability, but these improvements have not achieved the expected results so far.

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