| 摘要 |
PROBLEM TO BE SOLVED: To improve ignition performance to a combustion gas in a combustor, and to elongate a service life of a flame kernel forming section of an ignition device. SOLUTION: The combustion gas G1 supplied to a first pipe 1 is supplied from an opening 1b to an upstream side of a combustion region R1 in of a second pipe 2, a low flow velocity region R2 in which a flow velocity of the combustion gas G1 is relatively lower is formed in the second pipe 2, and the flame kernel forming section 3a of the ignition device 3 is disposed in the low flow velocity region R2. Since the combustion gas G1 in the low flow velocity region R2 is ignited with flame, and then the flame is transmitted to a downstream side of the combustion gas G1 and reaches the combustion region R1, ignition performance can be improved. Furthermore, since a velocity of the low flow velocity region R2 is low, a heat load to the flame kernel forming section 3a can be reduced. COPYRIGHT: (C)2010,JPO&INPIT |
