SWIRLER, METHOD OF PREVENTING FLASHBACK IN BURNER EQUIPPED WITH AT LEAST ONE SWIRLER, AND BURNER

摘要

PROBLEM TO BE SOLVED: To provide a method suitable for restraining flashback, and a burner therefor, in the burner equipped with at least one swirler.;SOLUTION: This swirler includes one fuel distribution tube rear end 37 positioned in the center, one cylindrical outer wall 39 surrounding the fuel distribution tube rear end 37, and bounding an axial air channel 41 of combustion air, a plurality of swirl vanes 47 extended up to the cylindrical outer wall 39 along a radial direction, and giving a tangential flow component to the combustion air, and partitioning walls 42, 142 installed in a radially inside of the cylindrical outer wall 39 to surround the distribution tube rear end 37, and for partitioning the axial air channel 41 into an air channel area 43 in the radially inside and an air channel area 45 in a radially outside, and the air channel area 43 in the radially inside passes the combustion air without giving the tangential flow component, or with giving the tangential flow component reverse to the tangential flow component in the air channel area 45 in a radially outside.;COPYRIGHT: (C)2011,JPO&INPIT