Patent ID: 9599334
Date: 2017-03-21
CPC Classifications: F23D

Claim:
1. A nozzle for delivering fuel to a burner flame in a furnace, the nozzle comprising: an outer cylinder having a hollow interior; an inner cylinder having a hollow interior and at least partially disposed within the outer cylinder and aligned therewith, the inner cylinder movable in an axial direction relative to the outer cylinder; at least one outward projection on one end of the inner cylinder, the at least one outward projection extending in a radial direction from an outer surface of the inner cylinder; and at least one inward projection on one end of the outer cylinder, the at least one inward projection extending and tapering in a radially inward direction of the outer cylinder along a longitudinal axis of the nozzle; wherein the at least one outward projection decreases open space in a cross-sectional area between the inner cylinder and the outer cylinder at the end of the inner cylinder.