| 摘要 |
PURPOSE:To avoid the danger caused by the flame-out or the incomplete combustion during the burning of the titled device by a method wherein the fuel supply is stopped based upon the result of comparison between the output from the flame electrical current detecting circuit and the designated level. CONSTITUTION:When the flame-out occurs during the burning, said flame-out is detected by a flame-out detecting rod 2, the flame-out signal is outputted to a control circuit 4, the valve closing command signal is outputted from said circuit 4 to a solenoid valve 3, then the fuel supplying is stopped and the burning is stopped. Further, when the abnormal burning such as incomplete combustion occurs, the flame electrical current is detected by said detecting rod 2, the signal is outputted to said control circuit 4, said circuit 4 compares the flame electrical current value with the muA cut level. When said electrical current value exceeds the muA cut level value, the valve closing command signal is output from said circuit 4 to said solenoid valve 3 to force the stopping of the fuel supply, then the burning is stopped. Thereby, the danger caused by the flame-out or the incomplete combustion during the burning can be avoided, accordingly, the safety can be improved. |
