Lean premix burner of a gas-turbine engine provided with a flow-guiding element

摘要

This invention relates to a lean premix burner of a gas-turbine engine with an annular central body 2, which, while being essentially concentric to a burner center axis 1, is connected to a film applicator 3, which conically widens at the fuel exit side, as well as to an outer ring 4 concentrically arranged to the burner center axis 1 and surrounding at least the film applicator 3 at a certain distance, characterized in that an annular flow-guiding element 6 is provided in an annular duct 5 formed between the outer ring 4 and the film applicator 3 which, in the axial direction of the annular duct 5, is at least partly situated outside of the outer ring 4.

主权项

1. A lean premix burner of a gas-turbine engine, comprising:
an annular central body being essentially concentric to a burner center axis, a film applicator having a conical film application surface for supplying with fuel from a fuel exit opening, the film application surface having a fuel flow off edge at a downstream area; the film application surface conically widening between a conical surface upstream of the fuel exit opening and to the fuel flow off edge of the film applicator; an outer ring concentrically arranged to the burner center axis and surrounding at least the film applicator at a certain distance to form an annular duct between the outer ring and the film applicator; wherein the annular central body is connected to the film applicator and to the outer ring; an annular flow-guiding element provided in the annular duct between the outer ring and the annular central body having a downstream portion extending in an axial direction downstream of a downstream-most edge of the outer ring.