Optical wave heating non-metal injection-molded water tank electric water heater provided with water flow switch with pressure reduction function

Abstract

The invention provides an optical wave heating non-metal injection-molded water tank electric water heater provided with a water flow switch with a pressure reduction function. A water tank 8 is made of non-metal materials through an injection molding technique. The water flow switch 4 with the pressure reduction function is installed on a water inlet pipeline of the water tank. The water flow switch is composed of a component A and a component B. According to the component A, a water inlet channel and a water outlet channel in a main body 4-1 are separated by a cover plate 4-2; and when water flows, the cover plate 4-2 is forcibly pushed by water, so that a movable contact 4-9 and a stationary contact 4-8 are made to make contact or a microswitch 4-7 is made to be turned on, and thus a circuit is closed. According to the component B, a transverse through hole is formed in the small end of a piston 4-12, a hole is further formed in the middle of the piston 4-12, when water inflows, water passes through the transverse through hole and then enters the water tank through the middle hole of the piston 4-12,and water is prevented from being blocked in the water inlet process; and when the water tank is filled with water or the water inlet amount is larger than the water outlet amount, the pressure in the water tank is increased, back pressure is generated by the big end of the piston 4-12, so that the piston 4-12 is made to move, and accordingly the area of a water inlet 4-14 is decreased or even the water inlet 4-14 is closed.

Description

technical field [0001] The invention relates to a light wave heating non-metal injection-molded water tank electric water heater equipped with a water flow switch with a decompression function. Background technique [0002] At present, all household electric water heaters in the world, the water inlet pipeline 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 generally 0.6Mpa, the test pressure is 1.2Mpa; this pressure will cause many problems that are difficult to solve; for example, the thermal expansion and cold shrinkage water tank will crack, leak, and the pressure will explode, 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 i...

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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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