| 摘要 |
PURPOSE:To obtain a combustor capable of preventing the increase of pressure loss in air passage even when primary air and gas are synchronously supplied in terms of amount and TDR is greatly taken. CONSTITUTION:Since a primary air passage 11, a secondary air passage 12, and a gas pathway 14 are controlled so that they are kept at a fixed area ratio, both the primary air and secondary air are controlled with respect to air-fuel ratios. Also, since the pressure of a high-pressure portion 18 is fedback to the pressure chamber 19 of a pressure-equalizing valve 13 in such a way that the pressure difference between the high-pressure portion 18 and low-pressure portion 21 of the primary air passage 11 is equalized with the pressure difference between the gas outlet of the valve 13 and the connection between the gas pathway 14 and the low-pressure portion 21, the air-fuel ratio on the primary air side can be kept almost constantly with good accuracy by the pressure- equalizing valve. Thus, a wide range of stable combustion can be obtained and also high-load combustion can be attained. |
