Solar energy water heater pipe emptier and water charging and discharging structure, function-changing device and fittings

Abstract

The invention relates to a water discharge and feeding structure switch and fittings of solar-energy water heater, without constant detection, but turning the switch controller to needed function position. When in idle discharge position, the stored hot water of tube can be utilized fully; in cold water feeding position, it can avoid overflow of cold water; and in hot water position, it can directly use the hot water, without discharging the cold water first. The invention also provides a wire-control water valve, a special descending hot water belt and special connecting fittings. The invention has simple structure, easy operation, and lower cost.

Description

technical field [0001] The invention relates to a solar water heater, in particular to a multi-functional structure for pipe emptying, water supply and water discharge of a solar water heater collecting water tank, a function conversion device and special special accessories. Background technique [0002] It is common for existing solar water heaters to use hot water and must first drain the remaining cold water in the pipeline. The longer the pipeline is, the more cold water will be released. Every time the hot water is released, there will always be hot water remaining in the pipeline, which cannot be fully utilized and becomes a pipeline. Keep cold water, even if there is hot water in the hot water tank in winter, the hot water in the water tank cannot be used normally because the remaining water in the pipeline freezes and blocks or even cracks or expands the connection point of the pipeline. [0003] Even if the patent application n...

AI Technical Summary

Problems solved by technology

[0002] It is common for existing solar water heaters to use hot water and must first drain the remaining cold water in the pipeline. The longer the pipeline is, the more cold water will be released. Every time the hot water is released, there will always be hot water remaining in the pipeline, which cannot be fully utilized and becomes a pipeline. Keep cold water, even if there is hot water in the hot water tank in winter, the hot water in the tank cannot be used normally due to the frozen water in the pipeline, blockage or even cracking, or expansion of the connection point of the pipeline

[0003] Even if the patent application number is CN02219379.0, and the pipe structure scheme named pipe emptying antifreeze solar water heater is adopted, there are still long pipes after emptying when hot water is poured, and the remaining air that is lighter than water in the pipe floats upwards. Form a confrontational situation with each other to hinder the smooth flow of hot water downwards, and make a noisy sound of water vapor tumbling, because the other end of the pipe is emptied and the other end of the intake pipe passes out of the water storage tank, when the three-way valve is in the state of pipe ventilation, it is opened by mistake When the cold water valve is installed, the cold water will be emptied from the pipeline and the inlet pipe will overflow out of the water tank, and the indoor users will not be able to detect and correct it in time, resulting in the possibility of a large amount of tap water waste. When the water is cut off, when the upper cold water valve without a pipeline check valve is opened by mistake, all the hot water in the water storage tank will be poured into the tap water pipe, which not only wastes hot water but also has the potential of scalding the tap water meter

[0004] Although the existing method of using electronic sensors to monitor the antifreeze of the electric heating belt or the pressurized circulating water of the pipeline pump can solve the above technical deficiencies, but because the additional equipment is relatively expensive, the full-time operation all year round is energy-consuming and vulnerable, which not only increases the production capacity The cost of manufacturing and warranty maintenance reduces the profit and benefit of the enterprise, and also increases the user's purchase cost and daily use and maintenance expenses, making it difficult to popularize and apply

Images