| 摘要 |
PURPOSE:To prevent the titled device from fuel dropping caused by a heat inertia in a vaporizing cylinder and from tar generation by a method wherein a fuel in a nozzle is flowed out at the extinguishment in an oil fan heater and the like. CONSTITUTION:A fuel in a fuel tank is flowed into a solenoid valve 8 through a pipe 5. At the starting of a fuel pump 6, a valve 8a of the solenoid valve 8 is closed, then a flow passage communicated to an air passage inside is sealed. Therefore, the fuel flowed into the solenoid valve 8 is injected into a vaporizing cylinder via a nozzle 9. At the extinguishment, the valve part 8a of the solenoid valve 8 is opened due to the stopping of the pump 6, an oil supply passage and an air passage inside are communicated. A burning air supplied from a fan 4 is flowed to a vaporizing cylinder 1 side, the pressure at the valve part 8a of the solenoid valve 8 becomes higher than that of a nozzle opening part. Therefore, when the valve part 8a is opened, a remaining fuel in the nozzle is flowed into the vaporizing cylinder due to the pressure difference. Consequently, no fuel remains in the nozzle, accordingly, the nozzle blocking caused by the dropping and tar generating can be prevented regardless of the temperature rising of the nozzle 9. |
