| 摘要 |
PURPOSE:To simplify a gas explosion proof apparatus for a combustion device, eliminate an ignition failure and improve a reliability and safety by a method wherein a conductive heater arranged near an injection port for use in injecting ignition fuel and a power supply for supplying an electricity to the heater are provided. CONSTITUTION:When a signal A indicating ignition is fed to a control device 17, a fuel valve 11 is opened by an opening and closing signal B fed from a fuel valve control circuit 17a and then fuel gas is supplied to an injection port 10. Then, an energization signal C is outputted from a power supply control circuit 17b with a delay of predetermined time by a timing adjusting circuit 17c. Supplying of electricity is started for the conductive heater 12 from the power supply device 15 and then the fuel gas is ignited. After a completion of ignition is confirmed, a signal A2 for indicating a termination of supplying electricity is fed to the power supply control circuit 17b and then the supplying of electricity by the power supply device 15 is terminated by the energization signal C. |
