Water leakage automatically protecting device of solar water heater

Abstract

The invention relates to a water leakage automatically protecting device of a solar water heater, which comprises a connecting pipe, a water cork, a free block, a pulley, a rope and a pore plate, wherein the connecting pipe comprises a circular bedplate, a big circular pipe and a small circular pipe; the big circular pipe and the small circular pipe are respectively sleeved with a big sealing ring and a small sealing ring; the big circular pipe is connected with a hot water storage tank through the big sealing ring in a socket joint and sealing way and is communicated with the hot water storage tank; the small circular pipe is connected with the inner pipe wall of a vacuum pipe through the small sealing ring in a socket joint and sealing way and is communicated with the vacuum pipe; one end of the water cork is fixed on the circular bedplate in the connecting pipe, the other end of the water cork is connected with one end of the rope, and the other end of the rope is connected with the free block through the pulley. When the vacuum pipe is broken to leak water, water in the vacuum pipe is directly communicated with air to lead the upper face and the lower face of the water cork to form the pressure difference, the water cork overcomes the pull force of the free block under the action of the water flow and the pressure difference and rapidly plugs on the circular bedplate so as to block the channel of the hot water storage tank and the broken vacuum pipe.

Description

technical field [0001] The invention relates to an automatic protection device for water leakage of a solar water heater applied in the field of solar photothermal technology. Background technique [0002] At present, household solar water heaters are mainly in-line vacuum tube collectors, which are composed of a hot water storage tank, a vacuum tube and a support. Usually, they are arranged in an inclined direction facing south, and the hot water storage tank is installed on the top of the vacuum tube. The principle makes the water in the vacuum tube form a natural circulation, and transports the hot water collected in the vacuum tube to the hot water storage tank. Because the water in the vacuum tube directly exchanges heat, it has the characteristics of high heat collection efficiency. However, the vacuum tube is made of glass. During use, the vacuum tube may be broken due to various reasons, such as high temperature bursting, low temperature freezing cracking , suffered...

AI Technical Summary

Problems solved by technology

Because the water in the vacuum tube directly exchanges heat, it has the characteristics of high heat collection efficiency. However, the vacuum tube is made of glass. During use, the vacuum tube may be broken due to various reasons, such as high temperature bursting, low temperature freezing cracking , suffered hail attack, external damage, etc., because the vacuum tube is directly connected with the hot water tank, once a vacuum tube breaks, it will cause all the water in the hot water tank to leak, especially for household solar water tanks with automatic water supply function. For water heaters, since the tap water is replenished at any time, the rupture of the vacuum tube causes a large amount of tap water to leak out. It is difficult for users to find water leakage without going to the roof, which causes unnecessary economic losses to users and brings great troubles.

This is the Achilles heel of in-line domestic solar water heaters that has plagued the solar water heating industry for years without any effective solution

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