| 摘要 |
<P>PROBLEM TO BE SOLVED: To equalize temperature distribution within a furnace body without lowering thermal efficiency. <P>SOLUTION: A heating furnace includes an object space 212a where a sintered object is arranged, the furnace body 212 surrounding the object space, one or a plurality of sealed gas heaters each including an inflow port making fuel gas flow into the body, a combustion chamber burning the flow-in fuel gas, a lead-out part to which exhaust gas generated by burning is led, a radiation surface conducting radiant heat to the exhaust gas circulating the lead-out part or the sintered object heated by being burnt in the combustion chamber, and an exhaust port exhausting exhaust gas heating the radiation surface to the outside of a body, and arranged in the furnace body, and an exhaust heat conduction part (heat insulating pipe 222a) communicating with the exhaust port of the sealed gas heater to guide the exhaust gas therein. The exhaust heat conduction part is disposed in one of parts other than a radiation space 212b formed between the sealed gas heater and the sintered object arranged in the object space to conduct the radiant heat to the sintered object in the furnace body. <P>COPYRIGHT: (C)2013,JPO&INPIT |
