| 摘要 |
PURPOSE:To allow the burner operation even if any one of the burners experiences a misfire while retaining safety by detecting the burner misfire with a flame detecting circuit, which causes a safety control circuit to stop the power supply from the power supply control circuit by means of the misfire signal from the flame detecting circuit so as to close off the valve for the misfied burner to stop the gas supply thereto. CONSTITUTION:When the ignition is done by operating a button for a desired level of burning intensity, a control circuit 35 detects such to cause the main solenoid valve 15 to open by means of the output 61 and the fan 45 to start by means of the output 62. The control circuit 35 further operates the ignition circuits 43, 44 for the stove burners 1, 2 which are intended for ignition, and causes the flow rate control valves 21, 21 to fully open by means of the output 57. After detecting the ignition by means of flame detecting circuits 47, 48, it causes only the flow rate control valve for the set flow rate to open for steady burning. In case where the stove burners 1, 2 extinguish themselves by experiencing misfire, etc., while burning, there will be no input of the flame presence signal to safety control circuits 51, 52 or the operational signal to the ignition circuits 43, 44 of the control circuit 35, and so, such output terminates the power output to power supply control circuits 39, 40 as well as the power supply to the flow rate control valves 21, 21... so as to stop the gas supply to the burners. |
