| 摘要 |
PURPOSE:To prevent any danger which might occur due to troubles of components such as a contact, a solenoid and the like from occurring by switching the operation of a damper for adjusting the quantity of combustion air, the quantity of kerosene for combustion supplied by means of a pump, and the rotational speed of a motor for indoor blasting, by one contact. CONSTITUTION:A burner in which kerosene is vaporized and burnt, is provided with a pump for supplying derosene, a damper 16 for adjusting the quantity of combustion air, and a solenoid 15 for operating the damper. The quantity of kerosene to be supplied to the pump is adjusted by the switching operation of an active element operated by a signal line in series with the solenoid. Switching of the motor 5 for blasting is performed by the switching operation carried out by the same contact 27d as in the solenoid. That is, by the switching operation of the contact 27d the switching of strong or weak supply quantity kerosene for use in the burner 4 and the switching of strong or weak supply quantity of blasting air are performed simultaneously. Hence, even when any trouble such as poor contact or the like of the contact 27d occurs, only combustion merely becomes weak. |
