| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection valve for gas turbines and a low NOx combustor that can reduce the amount of generation of NOx by forming an air-fuel mixture having uniform fuel distribution and suppresses an increase in manufacturing costs with a simple structure. SOLUTION: The low NOx combustor comprises a fuel injection nozzle 2 for injecting fuel along with air; a plurality of air nozzles 3 that are arranged successively with a gap concentrically surrounding the fuel injection nozzle 2, and are formed to allow air passing through the inside to collide with fuel injected from the fuel injection nozzle 2; and a plurality of swirlers 4 that are provided at the upstream side of each air nozzle 3 and turns air flowing into each air nozzle 3. An air channel is formed for circulating air between the fuel injection nozzle 2 and the air nozzle 3 that is adjacent to the outside of the fuel injection nozzle 2, and between respective air nozzles 3, and the downstream end of each air nozzle 3 is positioned at the downstream in the axial direction from the downstream end of the air nozzle 3 adjacent to the inside, and at the outside in the diameter direction. COPYRIGHT: (C)2005,JPO&NCIPI
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