STRUCTURE OF BURNER DIFFUSER

摘要

PROBLEM TO BE SOLVED: To provide a structure of a burner diffuser in which while an effective cooling function by ribs is maintained, a thermal deformation such as a forward collapse of a diffuser part by the ribs and the generation of burning caused thereby and a stable ceramic coating on the flame surface of the diffuser is realized. SOLUTION: In the burner diffuser, a plurality of ribs are provided along the circumferential direction between the outer periphery of an inner tube on which jet ports for fuel and air for fuel are formed and the back surface of the diffuser radially extended in an annular form from the inner tube. The linear form of the end edge of the rib comprises an inner peripheral edge part composed of a curve in contact with the outer peripheral surface of the inner peripheral edge and an outer peripheral edge part composed of a straight line or a curve whose inner peripheral edge comes into contact with the outer peripheral edge of the inner peripheral edge part and whose outer peripheral edge is connected to the back surface of the outer periphery of the diffuser.