External optical wave heating non-metal blow-molded water tank electric water heater provided with water flow switch with pressure reduction function

Abstract

An electric water heater with an external light wave heating non-metallic blow-molded water tank with a decompression water flow switch, 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. A and B are composed 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: the water inlet is closed, and the circuit is also disconnected. 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, causing the displacement of the piston 4-12, closing the small or even closing the water inlet 4-14.

Description

technical field [0001] The invention relates to an electric water heater with an external light wave heating non-metallic blow molding water tank with a water flow switch for decompression. Background technique [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 tank is a pressure-bearing structure, and the rated pressure is generally The test pressure is 0.6Mpa, and the test pressure is 1.2Mpa; this 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. Contents of the invention [0003] The present invention improves the existing water tank electric water heater made of metal materials. After the improvement, it is an external...

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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 tank is a pressure-bearing structure, and the rated pressure is generally 0.6Mpa, the test pressure is 1.2Mpa; this kind of pressure will cause many difficult problems; for example, the water tank that expands with heat and shrinks with cold will crack, leak, and explode under pressure, which is a problem in the world

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