A Control System for Electric Water Heater Discharge and Power-off Control to Prevent Misoperation

Abstract

The invention discloses a control system for water outlet and power failure of an electric water heater to prevent malfunction, which is characterized in that it includes: a three-pole electric leakage protection plug power line that can be reset automatically, a main controller of the electric water heater, an isolation communication module and a water flow sensor , the power line of the three-pole leakage protection plug is connected to the power supply line of the electric water heater, the main controller of the electric water heater is connected with the water flow sensor, and is connected with the power line of the three-pole leakage protection plug through an isolated communication module, and the main controller of the electric water heater is connected with the power line of the three-pole leakage protection plug. The controller controls the three poles of the power line of the three-pole leakage protection plug to open and close according to the signal provided by the water flow sensor. In the present invention, the isolation communication module controls the closure and disconnection of the three poles of the leakage protection plug power line according to the size of the water flow signal (threshold condition) detected by the water flow sensor, and can also avoid leakage under the premise of ensuring the safety of water for users Protect the plug from malfunctioning of the power cord.

Description

technical field [0001] The invention relates to the technical field of electric water heater control, in particular to a water outlet and power cut control system for an electric water heater to prevent malfunction. Background technique [0002] In the prior art, after the user's water behavior is collected through the water flow sensor, the electric heater is driven to be powered off through logic control, so as to ensure that the user will not get an electric shock due to electric leakage. However, because the power line of the leakage protection switch and the controller are still charged, and some leakage accidents are caused by poor grounding or electrification of the ground wire, it is impossible to completely guarantee the user's bathing safety, and there is a safety risk. [0003] In order to improve safety performance, some users press the test button of the leakage protection plug to disconnect the three poles (zero, fire, ground) of the electric water heater befor...

AI Technical Summary

Problems solved by technology

However, since the power line of the leakage protection switch and the controller are still charged, and some leakage accidents are caused by poor grounding or electrification of the ground wire, it is impossible to completely guarantee the user's bathing safety, and there is a safety risk

[0003] In order to improve safety performance, some users press the test button of the leakage protection plug to disconnect the three poles (zero, fire, ground) of the electric water heater before taking a bath. After bathing, they need to press the reset button of the leakage protection plug to power on the electric water heater , Some household electric water heaters are installed at high positions, resulting in difficult operation and bad experience

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