Swirler for mixing fuel and air

摘要

A swirler for mixing fuel and air is provided. The swirler includes a plurality of vanes arranged on a reference circle diameter which, together with a first longitudinal end face of the vanes disposed on a first wall and a second wall disposed on an opposing second longitudinal end face of the vanes, form a flow channel. In this arrangement at least one injection orifice in the first wall and at least one further injection orifice in the second wall open into a flow channel. The arrangement of the at least two mutually opposing injection orifices in the wall of the swirler makes for a homogeneous distribution of the fuel in the flow channel and ensures a uniform mixing of the air with the fuel. This results in uniform and low-NOx combustion of the fuel/air mixture in a burner.

主权项

1. A swirler for mixing fuel and air, comprising:
a plurality of vanes arranged on a reference circle which, together with a first wall disposed on a first longitudinal end face of the plurality of vanes, and a second wall disposed on a second longitudinal end face of the plurality of vanes, form a flow channel, and wherein the first wall include a first injection orifice, and the second wall includes a second injection orifice, resulting in opposed injection orifices opening into the flow channel, and wherein the injection orifice in the first wall is connected to a first annular channel and the injection orifice in the second wall is connected to a second annular channel, and the first and second annular channels are concentric with the reference circle.