| 摘要 |
<p>A combustor which is compact and generates a reduced amount of NOx. A combustor (1) is equipped with a pilot nozzle (21) mounted in the axis of the combustor (1) and performing diffusive combustion, main nozzles (22) mounted at circumferentially spaced intervals on the outer peripheral side of the pilot nozzle (21) and performing premixed combustion, an inner tube (2a) surrounding the pilot nozzle (21) and the main nozzles (22), and an outer tube substantially coaxially and externally surrounding the inner tube (2a) and forming a compressed-air flow path (6) between the inner peripheral surface of the outer tube and the outer peripheral surface of the inner tube. The direction of flow of compressed air flowing in the compressed-air flow path (6) is substantially reversed at an end of the inner tube (2a) and introduced into the pilot nozzle (21). A flow rate regulating section is provided in the compressed air flow path (6), and the flow rate regulating section increases the flow rate of the compressed air in that portion of the flow path which is on the inner peripheral side of the combustor (1) to a level greater than the flow rate of the compressed air in that portion of the flow path which is on the outer peripheral side. A flow regulating plate (51) having holes (55, 56) therein can be used as the flow rate regulating section.</p> |
