Instantaneous electric water heater with pressure regulation function

Abstract

Disclosed is an instantaneous electric water heater with a pressure regulation function. A water tank (8) is made of non-metal materials in a blow molding or injection molding mode or is made of metal materials. A pressure regulator (12) is installed on a water inlet pipeline of the water tank, and comprises a shell (12-1), a piston (12-2), a cover (12-3) and rubber parts (12-4). The piston (12-2) can move in the shell (12-1) along with changes of the pressure in the water tank. Meanwhile, a closed or semi-open device (16) with the function that water is instantaneously heated when water flows through the device is installed in the water tank.

Description

technical field [0001] The invention relates to a fast heating electric water heater equipped with a pressure regulator. Background technique [0002] At present, all domestic electric water heaters in the world cannot automatically adjust the pressure in the water tank. They all use pressure-bearing metal water tanks. The pressure is generally 0.6Mpa, and the test pressure is 1.2Mpa; this pressure will cause many difficult problems. Problems; for example, thermal expansion and cold contraction water tanks will crack, leak, and explode under pressure, which is a problem in the world; therefore, many well-known enterprises are trying to reduce the pressure in the water tank, such as: Haier Company Announcement No. CN101825340B "Water Heater for Lowering Inner Tank Pressure 》Two solenoid valves are used to reduce the pressure in the water tank. Not only is the structure complex, but also expensive, and it cannot be commercialized; especially the water tank made of non-metallic...

AI Technical Summary

Problems solved by technology

[0002] At present, all domestic electric water heaters in the world cannot automatically adjust the pressure in the water tank. They all use pressure-bearing metal water tanks. The pressure is generally 0.6Mpa, and the test pressure is 1.2Mpa; this pressure will cause many difficult problems. Problems; for example, thermal expansion and cold contraction water tanks will crack, leak, and explode under pressure, which is a problem in the world; therefore, many well-known enterprises are trying to reduce the pressure in the water tank, such as: Haier Company Announcement No. CN101825340B "Water Heater for Lowering Inner Tank Pressure 》Two solenoid valves are used to reduce the pressure in the water tank. Not only is the structure complex, but also expensive, and it cannot be commercialized; especially the water tank made of non-metallic materials cannot withstand the working pressure of 0.6Mpa. If it is directly connected to the water source, Due to different regions, different floors, and great differences in water inlet pressure, the possibility of using non-metallic water tanks is very small

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