Automatic shut-off and alarm for stove heating unit

DETAILED DESCRIPTION The present invention is characterized in that a burner plate is formed with a series of declining U-shaped grooves for water flow use.
The water flows through a drainage outlet, and then flows into the water drop detector in which a water switch is provided to connect the power source.
A solenoid valve is installed on the gas delivery line and is connected to the water drop detector switch.
Upon closing of the water drop detector switch, the solenoid valve will be energized and the valve will close and shut off the supply of gas fuel.
The control circuit consists of a transformer step down the line voltage, a full-wave rectifier for rectifying the current, a capacitor for stabilizing or smoothing the current wave, and the water drop detector swtich.
A relay is actuated by the switch and is connected to the paralleled alarm and solenoid so as to sound the alarm and close the valve.
The object of the present invention is to save the loss of gas and to prevent the happening of a dangerous accident.
If electric energy is used to energize the burner or heating element, the burner plate should take the form of an insulating plate having a heating coil.
In this modification, the U-shaped grooves on the burner plate have also been provided with water drainage to lead water drops into the water drop detector which, in turn, actuates the control circuit.