| 摘要 |
PURPOSE:To efficiently burn fuel even though it is a low-grade one, and also, to maintain and control the state of combustion stably, by preheating the air for combustion by an electrically red-heated body. CONSTITUTION:A red-heated body 4 is heated by electrifying a heating wire 4b, housed in an electrically, red-heated body 4. The air 2 introduced from the outside is blown through the red-heated body 4 to preheat it. The preheated air is fed into a combustion chamber 3 together with a fuel 1, and then, they are ignited by the red-heated body 4 to bring them into combustion. In addition, there is another way possible to preheat the air 2 and the fuel 1, by constructing a part or whole of the external side-wall 3a of the combustion chamber 3 to a double walled structure. |
