Overtemperature protection control system and electric water heater

Abstract

The invention provides an overtemperature protection control system and an electric water heater and relates to the technical field of water heaters. The overtemperature protection control system comprises an electric leakage protection plug, an isolation communication module, a control device and a temperature sensor. The electric leakage protection plug is electrically connected with the electric water heater through the control device. The control device is electrically connected with the electric leakage protection plug through the isolation communication module. The temperature sensor is electrically connected with the control device and used for collecting temperature data of an inner container of the electric water heater. The control device reads the temperature data, judges whether the temperature data are greater than a set threshold value or not and transmits a control signal to the isolation communication module so as to make the isolation communication module send an outage instruction to the electric leakage protection plug according to the control signal when the temperature data are greater than the set threshold value, so that the electric leakage protection plug is disconnected with an external power supply. The overtemperature protection control system can detect the water temperature in the inner container in real time and can also prevent safety accidents caused by continuous heating of the electric water heater, and the use safety of the electric water heater is guaranteed accordingly.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to an over-temperature protection control system and an electric water heater. Background technique [0002] With the continuous development and progress of society, in order to meet the needs of users, water heater technology is also developing and improving. At this stage, electric water heaters have entered thousands of households, bringing great convenience to users' water use. However, while electric water heaters bring convenience to users, there are also unavoidable safety hazards that threaten the safety of users' lives and property. In my country, there are many incidents of casualties caused by the use of electric water heaters every year. [0003] The over-temperature protection scheme adopted by the existing electric water heater is to control the on-off of the electric heater through a thermostat and a thermal circuit breaker. The electric heater is no longer ene...

AI Technical Summary

Problems solved by technology

But when both the thermostat and the thermal circuit breaker fail, the electric water heater will be out of control. The electric heater will keep heating the water in the inner tank, and the hot water in the inner tank will be heated to steam, causing the water pipe to melt and cause blockage. Make the entire inner tank into a high-pressure furnace, and there will be a risk of bursting after reaching a certain pressure, so that the personal safety of users cannot be guaranteed

In addition, in the existing solution, when the water temperature of the inner tank is too high, only the electric heater is controlled to cut off the power, and the electric water heater leakage protection plug power line is not disconnected from the external power supply, and there are still potential safety hazards to a certain extent.

[0004] Therefore, there is still a potential safety hazard if only the electric heater is powered off. When both the thermostat and the thermal circuit breaker fail, the electric water heater will have a risk of bursting, and the personal safety of the user cannot be guaranteed.

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