Patent ID: 6068470
Filing Date: 2000-05-30
Classification: F23D

Abstract:
A dual-fuel burner for the oxidation of liquid fuel with air and gaseous fuel in a combustion chamber, comprising:a liquid fuel atomizer nozzle having an axis, and which generates a divergent spray cone of liquid fuel;an annular atomizer lip concentric to the axis of the atomizer nozzle and forms an impact member for the spray cone;a primary air stream channel flow connected to an inside of the atomizer lip, the primary air stream channel adapted to conduct a first air stream to the spray cone;a secondary air stream channel flow connected over an outside of the atomizer lip, the secondary air stream channel adapted to conduct a second air stream to the first air stream; anda gaseous fuel channel between the primary and the secondary air stream channels and flow connected to the atomizer lip, the gaseous fuel channel discharges into at least one of the primary and secondary air stream channels upstream of an atomizer edge of the atomizer lip and downstream of an air flow twist generator in the at least one of the primary and secondary air stream channels.