| 摘要 |
PROBLEM TO BE SOLVED: To provide a radiant tube burner for improving heat efficiency by improving exhaust heat recovering efficiency of combustion gas. SOLUTION: The radiant tube burner 1 includes a heat exchange tube 5 arranged between a partition wall 22 of a burner body 2 and an inner tube 4 so as to connect in an axial direction of an outer tube 3. A second exhaust passage 82 is formed between the heat exchange tube 5 and the inner tube 4, and a third exhaust passage 83 is formed between the heat exchange tube 5 and the partition wall 22. An exhaust gap 51 for communicating the second exhaust passage 82 and the third exhaust passage 83 is provided on the heat exchange tube 5. A plurality of partition wall fins 221 are formed on an inner circumference side and an outer circumference side of the partition wall 22, and an inner fin member 45 provided with a plurality of inner fins 452 is arranged on an outer circumference side of the inner tube 4. COPYRIGHT: (C)2006,JPO&NCIPI
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