Two-stage burner with two-layer vortex countercurrent flow

Abstract

Two-stage burner with a two-layer vortex counter current flow comprises a burner body and a flame tube containing an ignition device coaxially installed in it, and an outlet nozzle, between the burner body and the flame tube there is an air channel with the first swirler placed in it. The flame tube is made of the first section and the second section, separated by a partition wall comprising an outlet nozzle, the front wall of the first section has a toroidal shape, forming an inlet nozzle inside the first section, which is connected to the air channel. The first fuel supply device is located in the inlet nozzle, inside the first and second sections near the partition wall there are second and third swirlers connected to the air channel and to the second and third fuel supply devices, respectively. The first swirler is combined with the inlet nozzle. The outlet part of the second section of the flame tube has a trapezoidal shape. This results in improved formation of the combustion zone and efficient afterburning of fuel in a wide range of operating modes due to the use of a profiled end in the flame tube and the presence of two combustion zones, as well as a uniform air supply to the channel between the body and the flame tube.

Dependencies are inferred from the claim text.