| 摘要 |
PROBLEM TO BE SOLVED: To provide a one-through type boiler in which the CO concentration adjacent to a side wall, unburned part, stuck ash, or the like, can be decreased with a simple structure and which has a low cost means by which combustion condition can be excellently maintained. SOLUTION: A one-through type boiler comprises front rear walls (burner walls) 14a, 14b on at least whose one side plural steps of burners 2, 3, 4 are arranged and which oppose to each other and a combustion chamber 13 formed with the wall and side walls 1a, 1b which are cross to the burner walls 14a, 14b. A gas exhaust nozzle 6 of a jet of a gas that does not include a fuel that makes a gas pressure adjacent to side walls 1a, 1b inside the combustion chamber 13 higher than the gas pressure in a center part of the combustion chamber 13 is provided between the most outer burner within the region of the height of the burners 2, 3, 4 and the side walls 1a, 1b. The combustion gas may not come close to the side walls 1a, 1b due to the jet of the gas. |
