Water outlet power failure and electric leakage protection device for electric water heater

Abstract

The invention discloses a water outlet power failure and electric leakage protection device for an electric water heater. The device comprises a water mixing valve and an intelligent power failure socket. A water flow sensor is arranged on the water mixing valve, a singlechip microcomputer is connected to the water flow sensor, and a power supply module and a first communication module which are connected to the singlechip microcomputer are connected to the water flow sensor; the intelligent power failure socket which is mounted on a power supply line of the electric water heater comprises a housing, a plug pin socket and a plug pin, a release which controls the plug pin and the plug pin socket to be in contact or to be disengaged and a pressure reducing circuit, an electric leakage detection circuit and a second communication module which are connected to the release; the release is connected to the power supply line of the electric water heater through the voltage reducing circuit, detects currents or voltages flowing through a null line and a hot wire and an earth wire through the electric leakage detection circuit, and controls the plug pin and the plug pin socket to be in contact or to be disengaged according to signals fed back by the water flow sensor and the electric leakage detection circuit. The device disclosed by the invention has double protection of electric leakage protection and water outlet power failure and can safely upgrade an old electric water heater.

Description

technical field [0001] The invention relates to the technical field of electric water heaters, in particular to an electric water heater outlet power failure and leakage protection device. Background technique [0002] An electric water heater is a water heater that uses electricity as energy for heating. Every year in our country, there are many personal injury accidents caused by the use of electric water heaters. Most of the reasons are caused by environmental leakage (no ground wire, or ground wire failure, ground wire electrification, tap water pipe electrification, etc.) . [0003] A Chinese utility model patent with the publication number CN204329335U discloses an electric water heater with a water outlet power failure protection device, including a casing, a heating pipe, a controller, an inner tank, an electric leakage protector and a thermal circuit breaker, and the casing is provided with a water inlet pipe and The water outlet pipe is characterized in that: the...

AI Technical Summary

Problems solved by technology

But for electric water heaters that have been sold, especially for electric water heaters that use ordinary power cords or have no communication function leakage protection, the above functions cannot be realized

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