Water supply and return pipe antifreezing and emptying device for solar water heating system

Abstract

The invention provides of a water supply and return pipe antifreezing and emptying device for a solar water heating system. The device is mainly improved from the traditional pipeline structure of the solar water heating system. In the novel system, an automatic emptying breathing valve and a cold and hot water two-way check valve are added, and a circulating-type water supplement tank is added, so that a novel water supply and return pipe antifreezing and emptying technology for the solar water heating system is formed. At the temperature of sub-zero degrees in winter, the device can quickly empty water in an outdoor pipeline of the solar water heating system without any thermal insulation measures, the pipeline of the solar water heating system is prevented from frost cracking, and a user can normally use the solar water heating system in winter; and under the condition of not consuming any energy, the solar water heating system can operate and generate a large amount of solar hot water, and the solar water heating system is energy-saving and is not energy-intensive in all the year round.

Description

technical field [0001] The invention relates to an antifreeze technology for water supply and return pipelines of a solar hot water system Background technique [0002] Known solar water heating system is made up of solar heat collector, hot water tank, water pump, hot and cold water pipeline and controller etc. When this kind of system comes in winter, the outdoor temperature is below zero degrees Celsius, and the water in the outdoor pipes will freeze and expand if it cannot be drained, causing the pipes to be frozen and cracked, causing the entire solar system to be paralyzed and causing extensive damage. The main reason for these problems is: the water in the solar water heating system pipes cannot be drained. In order to solve this problem, the commonly adopted method is to wrap the pipes with insulation materials for heat preservation, but the pipes are still damaged by freezing in the cold winter; in addition, the electric heating insulation tape is used to wrap the ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the water in the solar water heating system cannot be emptied, and to provide a new anti-freezing and emptying technology for the supply and return pipelines of the solar water heating system. This technology is mainly used in the pipelines of the known solar water heating system To improve the structure, in this system, add an automatic emptying breathing valve and a two-way one-way valve for hot and cold water, and add a circulating water replenishment tank, thus forming a new type of solar hot water pipeline system, the invention passed The following technical solutions are realized:

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