| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust flue capable of reducing manufacturing costs while satisfying smooth discharge of an exhaust gas and effective cooling of the exhaust flue, and further reducing labor-hours and costs for carrying and installing the exhaust flue. SOLUTION: This exhaust flue 1 is composed of an inner cylinder 27 and an outer cylinder 29. The outer cylinder 29 is composed of a first outer cylinder 30 and a second outer cylinder 31. The inner cylinder 27 is vertically disposed on a tip portion of a combustion chamber 5. The first outer cylinder 30 is fitted to the inner cylinder 27 connected to the combustion chamber 5 from an upper part and defines a cylindrical clearance 28 with the inner cylinder 27. The second outer cylinder 31 is connected to an upper portion of the first outer cylinder 30. The exhaust gas from the inner cylinder 27 is discharged while guided in the second outer cylinder 31 by the air flowing upward from the cylindrical clearance 28. COPYRIGHT: (C)2008,JPO&INPIT
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