| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem wherein the second combustion gas is leaked out into a secondary air route, when a clearance exists in a route for supplying the second combustion gas, to be exhausted together with secondary air under the state one part of the second combustion gas leaked out into a secondary air passage is not burnt yet. <P>SOLUTION: This combustion device is constituted to make internal pressure of a route for supplying the secondary air higher than internal pressure of a route for supplying the second combustion gas. The second combustion gas is prevented from leaked into a secondary air supply route of higher pressure, even when the clearance or a hole exists in the route supplied with the second combustion gas, because the internal pressure of the route for supplying the secondary air is higher than the internal pressure of the route for supplying the second combustion gas. The second combustion gas is thereby prevented from being exhausted under the state the second combustion gas is not burnt yet, and a required manufacturing cost therefor is also restrained. <P>COPYRIGHT: (C)2011,JPO&INPIT |
