Swirler, at least one method for preventing and burners for flashback in burner with a swirler

摘要

Disclosed is a burner having at least one swirler, and provides a suitable method and a burner achieve suppression of flashback. A swirler, one fuel distribution pipe rear end which is positioned in the center and (37), one of the in-cylinder bounding axial air path (41) of the combustion air surrounds the fuel distribution pipe rear end (37) and Katachisotogawa wall (39), a plurality of swirler vanes which impart a tangential flow component into the combustion air extending radially to the tubular outer wall (39) (47), radially inwardly of the cylindrical outer wall (39) and installed in and axial air passage surrounds the fuel distribution pipe rear end a (37) radially inward of the air passage area (41) (43) and the radially outer air passage area partitioned into (45) one partition wall (42 , 142) were provided, tangential flow component is, or radially outward of the air passage zone in (45) radially inward of the air passage area (43) passes without the combustion air gives a tangential flow component It is allowed to pass through by applying a tangential flow component of the direction opposite to the. .BACKGROUND 4