We always don't want it to happen, but we can't avoid it. With the development of science and technology, the electrical and so on our side, and so some of the easy to bring our disaster is to be avoided. As the safe stoves have accident flameout automatic closing gas function, it is through a thermocouple sensing device installed in each furnace to achieve accident flameout automatically close the gas, when the user due to cooking soup water overflowing accident causes the gas flameout, due to a decrease of thermocouple temperature, electric magnetic valve coil can not maintain the electromagnetic force, under the action of the spring off valve and a gas path, cut off the gas path, thus avoiding gas leakage. It has been considered that the solenoid valve coil can play a positive aspect is good, did not think of the solenoid valve coil can not maintain the electromagnetic force is because such a function to achieve unity to avoid the possibility of disasters.