| 摘要 |
PURPOSE:To feed air to a burner without using a fan, by providing an evaporating chamber which has a vent, to the lower part of a stack, and by feeding the air to a burner head through the vent, as well as by providing controlling device to the vent. CONSTITUTION:The combustion air is sucked by the natural draft force generated in a stack 21, by the intermediary of a control valve 32 and a vent 3 which are provided to the lower part of a burner body 1, and of a vent 7 provided to an evaporating chamber 6. Especially, a number of thready secondary air are injected from a number of the secondary air breather pores 14 to thready or filmy and thick mixed gas which is injected from gas injection ports 16. With such an arrangement, combustion air is controlled by the control valve 32, together with the fuel being controlled, so that clean and blue-flamed combustion cak be taken place on a burner. At the same time, quiet operation can be performed without a fan. |
