A pressure protection valve and a gas water heater

Abstract

The invention relates to a pressure protection valve and a gas water heater, comprising a valve body and a valve core assembly, characterized in that the valve body is also provided with a bypass pipe communicating with the valve chamber; the second valve core assembly is arranged in the valve chamber for controlling On and off of the water inlet, the second spool assembly is in a normally open state; the first spool assembly is set in the side pipe to control the action of the second spool assembly; it includes the first base and the first valve set in the side pipe rod, the first valve plug, the first magnetic part and the second magnetic part; the first valve plug can be slidably sealed and connected to the inner wall of the side pipe; the first valve plug is drivingly connected to the first valve stem, and the first valve stem can be slidably Located on the first base, the first valve stem drives the second valve core assembly to move; the first base and the first valve plug are respectively provided with a first accommodation groove and a second accommodation groove; the first magnetic part is accommodated in In the first accommodating groove; the second magnetic part is accommodated in the second accommodating groove; the first magnetic part and the second magnetic part are oppositely arranged and opposite to each other with the same poles.

Description

technical field [0001] The invention relates to the field of valves, in particular to a pressure protection valve and a gas water heater using the pressure protection valve. Background technique [0002] Due to water supply and terminal use, the existing domestic water usually has pressure fluctuation problems. For some normally open connecting water pipes, such as water heater inlet pipes, the water inlet end is a normally open valve, and the water outlet end is a normally closed valve. Under working conditions, if the pressure in the water pipe suddenly rises, for example, when it freezes and expands, it is easy to cause the pipe to swell and crack, and it will crack from the weak point of the pipe's pressure bearing capacity, resulting in water leakage. If the user fails to find out and close the water inlet pipeline in time, the water in the water source pipeline will continuously enter the connecting water pipe and run out from the crack, resulting in serious water leak...

AI Technical Summary

Problems solved by technology

[0002] The existing domestic water usually has the problem of pressure fluctuation due to water supply and terminal use. For some normally open connecting water pipes, such as water heater inlet pipes, the water inlet end is a normally open valve, and the water outlet end is a normally closed valve. Under working conditions, if the pressure in the water pipe suddenly rises, for example, when it freezes and expands, it is easy to cause the pipe to swell and crack, and it will crack from the weak pressure-bearing capacity of the pipe, resulting in water leakage

If the user does not find out and close the water inlet pipeline in time, the water in the water source pipeline will continuously enter the connecting water pipe, and run out from the crack, resulting in serious water leakage, causing property damage and safety problems such as floor soaking, electrical leakage, etc.

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