CUBIC SWIRLER BURNER

PROBLEM TO BE SOLVED: To further curtail the amount of NOx generated in a cubic swirler burner. SOLUTION: In a cubic swirler burner, an inner cylinder of a combustion cylinder 2 with an open surface turned to the side of a combustion chamber as rectangular prism comprising five wall surfaces and one open surface is provided at the tip of an outer cylinder 1 of the combustion cylinder by which air for combustion is fluidized toward the combustion chamber 9, a fuel injection port 4 is provided on the top surface 3 facing the open surface of the inner cylinder 2 of the combustion cylinder, side air holes 5 are each provided at a position in proximity to one of two each of edge lines parallel with the center axis of the outer cylinder of the combustion cylinder on four sides vertical to the top surface and a fuel nozzle 7 to inject a fuel toward the inside of the inner cylinder of the combustion cylinder. A top surface air hole 6 is provided on the top surface 3 of the inner cylinder 2 of the combustion cylinder to introduce air into the inner cylinder 2 of the combustion cylinder from the top surface side and a swirl flow of flame is formed in the inner cylinder 2 of the combustion cylinder.