| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved turning combustor wherein a higher space heating rate is demonstrated and production of NOx is reduced with less combustion noise. SOLUTION: Both an outer peripheral wall 2 and an inner peripheral wall 4 are cylindrical, and the inner peripheral wall 4 is disposed concentrically inside the outer peripheral wall 2. A plurality of flame holes 5 are cut in the inner peripheral wall 4. Low concentration gas is injected from the flame holes 5 to form turning flames. Since the low concentration gas is supplied at a low speed, combustion noise is reduced. In a turning injection section 9, a plurality of turning injection section pieces 10 are superimposed, and an injection port 11 is formed among the adjacent turning injection section pieces 10. High concentration gas turns from the injection port 11 and injected into a combustion chamber 12 to mix with already burned gas for achievement of complete combustion. Since the high concentration gas is diluted by the already burned gas, production of NOx is suppressed.
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