GAS TURBINE COMBUSTOR

PROBLEM TO BE SOLVED: To improve combustion efficiency and reduce emission of unburnt substances by providing a heat insulating material wall where a wall surface enclosing a combustion chamber is formed with a non-metal heat insulating material on an outer cylinder of the combustor, and providing an air passage in the heat insulating material wall, and further allowing desired air to pass through and be distributed into the combustion chamber from the air passage. SOLUTION: Heat insulating material walls 2, 2' are provided at a portion corresponding to an annular passage between outer cylinders 1, 1' of a gas turbine combustor 10, and a wall surface of the combustion chamber 3 is constructed inside therof. A fuel nozzle 5 and an air whirling unit 6 or a burner 7 are disposed at the center of a combustion chamber head part wall 4. Thereupon, the heat insulating material walls 2, 2' are mounted so as to have small gap passages 8, 8' between the outer cylinders 1, 1' whereby the outer cylinders 1, 1' and the heat insulating material walls 2, 2' are prevented from being raised in temperature. Further, there are provided air passages 11, 11' for feeding air into the combustion chamber 3 which are communicated with an air inflow inlet 12'. Hereby, high temperature of the combustion chamber 3 wall surface is endured, and the outer wall on the side of the outer cylinders 1, 1' is prevented from being overheated.