Security defending system of electric water heater and electric water heater

Abstract

The invention provides a security defending system of an electric water heater. The security defending system of the electric water heater comprises a hydraulic pressure control device and a microswitch, wherein the hydraulic control device is provided with a reducible ejector rod which can move under the effect of the hydraulic pressure; the hydraulic pressure control device is arranged on a water inlet pipe of the electric water heater and is communicated with the water inlet pipe, or the hydraulic pressure control device is arranged on a water outlet pipe of the electric water heater and is communicated with the water outlet pipe; the microswitch is electrically connected to a safety plug of the electric water heater; the top rod of the hydraulic pressure control device movably touches the microswitch, the microswitch sends out a power outage signal, the safety plug receives the power outage signal of the microswitch, and the safety plug switches off a heating circuit of the electric water heater. The invention further provides the electric water heater. Through the structure, control through mechanical components is achieved through a pressure unit, the mechanical components are more reliable than electronic signals, and thus malfunctions of the whole security system can be reduced as much as possible.

Description

Technical field [0001] The invention relates to the technical field of safety of electric water heaters, in particular to an electric water heater safety protection system and an electric water heater. Background technique [0002] At present, the water discharge and power failure control system used by electric water heaters on the market receives the water flow signal through the water flow sensor (the key element is the Hall sensor), and transmits it to the single-chip microcomputer chip on the control board for signal processing, and then sends the signal control Leakage protection action achieves the effect of power failure when water is used. The turbine in the water flow sensor is easy to be stuck by foreign matter, and when the signal is converted through the single-chip microcomputer, it will increase the probability of failure. And this control system is only suitable for electric water heaters with a single-chip control system, and cannot be installed in ordinary Mech...

AI Technical Summary

Problems solved by technology

The turbine in the water flow sensor is easily stuck by foreign matter, and when the signal is converted by the single-chip microcomputer, the probability of failure will be increased, and this control system is only suitable for electric water heaters with a single-chip microcomputer control system, and cannot be installed in ordinary water heaters. mechanical electric water heater

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