| 摘要 |
PURPOSE:To realize a rapid changeover by carrying out beforehand the selection of a combustion state upon changing over from one burner to two burners by increasing the required combustion amount in a forced blasting type combustion device such as a hot water supplier or the like using two burners. CONSTITUTION:A fan 12 for combustion, a governor proportional valve 23, and a solenoid valve 24 for changeover are controlled in accordance with a set combustion quantity and an adjusted fuel gas is ejected to a first burner 11a and a second burner 11b. When the set combustion quantity is changed at a second combustion in which the solenoid valve 24 for changeover is closed, the combustion quantity is changed by the governor proportional valve 23. However, in a case where the quantity of a change is large and a predetermined combustion quantity is not obtained in the second combustion, a first combustion in which two burners are burnt together is selected. Upon this occasion, the governor proportional valve is immediately adjusted to a slow igniting state, the solenoid valve 24 for changeover is opened to change to the first combustion, and thereafter the governor proportional valve is adjusted to carry out the change of the combustion quantity. |
