Water heater

Abstract

The invention discloses a water heater. The water heater comprises a shell, a water path system arranged in the shell, a wire for supplying power to the water heater, a current transformer for detecting the current of the wire, a safety protection valve used for controlling a water flow in the water path system to be on and off, and a controller connected with the wire and communicated with the current transformer and the safety protection valve. When the current transformer detects that the current difference of a null line and a firing line of the wire or the current value of a ground wire of the wire is larger than or equal to a preset value I, the controller controls the safety protection valve to cut off the water flow of the water path system. According to the water heater, electricity leakage can be sensitively and accurately judged, and therefore during electricity leakage, the water flow in the water path system can be reliability cut off, and happening of electric shock casualty accidents is prevented; and the detection precision of the current transformer is high, and work is stable.

Description

technical field [0001] The invention belongs to the technical field of water heaters, and in particular relates to a water heater. Background technique [0002] In the water heater in the related art, due to the non-standard installation of the water heater product itself and the user's circuit, the live wire and the neutral wire are reversed, or the neighbor user's home leaks electricity, etc., and the safety is poor. For this reason, some water heaters provided with anti-electric wall, anti-electric switch, leakage protection etc. have occurred, but these water heaters just reduce electric current or cut off power supply when leakage, can not thoroughly solve the electric shock problem, and safety is not high. In the related art, some water heaters will take safety protection actions according to the electrification of the water flow, but the current detection of the water flow is not accurate, and when the water flow is electrified, the safety of users has been seriously ...

AI Technical Summary

Problems solved by technology

[0002] The water heater in the related art, due to the non-standard installation of the water heater itself and the user's circuit, the live wire and the neutral wire are reversed, or the neighbor user's home leaks electricity, etc., and the safety is poor.

For this reason, there have been some water heaters equipped with anti-electric walls, anti-electric gates, leakage protection, etc. However, these water heaters only reduce the current or cut off the power supply when there is an electric leakage, and cannot completely solve the problem of electric shock, and the safety is not high.

In related technologies, some water heaters will take safety protection actions according to the charging situation of the water flow, but the current detection of the water flow is not accurate, and when the water flow is charged, the safety of users has been seriously threatened, and there is room for improvement

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