Electric water heater provided with water flow switch with pressure reduction function and non-metallic blow-molded water tank

Abstract

A non-metallic blow-molded water tank electric water heater equipped with a water flow switch with a decompression function, the water tank 8 is made of non-metal material blow molding, and a water flow switch 4 with a decompression function is installed on the water inlet pipeline of the water tank, which is composed of A , B consists of two parts: part A, the channel of water inlet and outlet in the main body 4-1 is not directly connected, but separated by the cover plate 4-2, when there is water flowing, the water will forcefully push the cover plate 4- 2. Make the movable contact 4-9 contact with the static contact 4-8 or make the micro switch 4-7 connected, and the circuit is conducted. In part B, there is a horizontal through hole at the small end of the piston 4-12, and there is also a hole in the middle. When water enters, the water passes through the horizontal hole and enters the water tank from the middle hole of the piston 4-12. When the pressure in the water tank increases, the piston 4-12 , the big end generates back pressure, which causes the piston 4-12 to be displaced, and the water inlet 4-14 is turned off or even closed; when the water is released, the water inlet is repeatedly opened.

Description

Technical field [0001] The invention relates to a non-metal blow molding water tank electric water heater equipped with a water flow switch with a pressure reducing function. Background technique [0002] At present, all domestic electric water heaters in the world, the water inlet pipe is connected to the water source, from the water inlet to the water tank, without installing other components, can not automatically adjust the pressure in the water tank, the water tank adopts a pressure-bearing structure, and the rated pressure is 0.6 Mpa, the test pressure is 1.2Mpa; this pressure will have many difficult problems; for example, the thermal expansion and cold shrinkage tank will crack, leak, and explode under pressure, which is a world problem. Summary of the invention [0003] The present invention improves the existing electric water heater with a water tank made of metal materials. After the improvement, it is a non-metal blow molded water tank electric water heater equipped w...

AI Technical Summary

Problems solved by technology

[0002] At present, all household electric water heaters in the world, the water inlet pipe is connected to the water source, from the water inlet to the water tank, without installing other components, can not automatically adjust the pressure in the water tank. The water tanks are all pressure-bearing structures with a rated pressure of 0.6 Mpa, the test pressure is 1.2Mpa; this kind of pressure will cause many difficult problems; for example, the heat expansion and contraction water tank will crack, leak, and explode under pressure, which is a problem in the world

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