| 摘要 |
PURPOSE:To prevent tar from generating in the vaporizing part of the burner by subjecting surface treatment having a cleaning effect to the vaporizing part of an evaporator and warming the same by actuating a heater at the time of extinguishing fire, in the title burner used in a kerosene fan heater or the like. CONSTITUTION:A self-cleaning coaling 7 has been applied to an evaporator 3 beforehand. When an operating switch 13 is turned OFF, a combustion control section 11 stops the combustion of a burner 5. Upon this occasion, a vaporizing temperature set value is made high, an operating switch 13 is changed over to the side of a warming circuit part 14. By these operations, a vaporizing temperature control part 12 controls a heater 2 by the comparison between the set temperature of the evaporator 3 set by the warming circuit 14 and the detected temperature of the evaporator temperature sensor 6 and maintains the evaporator 3 at a predetermined temperature only for a preset period of time of a timer 15. Accordingly, during this time, the self-cleaning coating functions to clean the evaporator. Thus, the adherence of tar to the vaporizing part can be prevented. |
