| 摘要 |
PURPOSE:To restrict amount of generation of oxygen nitride and keep a stable combustion state ranging from a high amount of combustion to a low amount of combustion by a method wherein a controller has a temperature sensing part for detecting a temperature of a burner cap through a thermocouple and an air ratio controller for controlling an amount of supplied air of a fuel supplying means or an air supplying means in such a way so that an output signal of the temperature sensing part becomes a constant value. CONSTITUTION:A thermocouple 13 is made such that a temperature measuring point 14 is closely contacted with a central position of a burner cap 15, connected to a controller 16 and an electromotive force generated at the temperature measuring contact point 14 is transmitted to a temperature detector part 17 of a controller 16. A temperature retrieving part 18 outputs a signal for varying an amount of combustion to an air ratio controller part 19 in such a way so that it becomes a constant value. An air ratio controller part 19 may control a pump 6 in response to an output signal of the temperature retrieving part 18 and adjust an amount of supplied fuel. The amount of supplied fuel is controlled in such a way so that the electromotive force shows a constant value and an air ratio is controlled to show any predetermined value (lambda=approximately 1.5). The air ratio is adjusted to keep a stable combustion condition, thereby a flame temperature when ignited is lowered and an amount of generation of NOx is reduced. |
