Patent ID: 8316644

Claim:
A burner, comprising: a burner head; a swirler comprising an air inlet opening and an air outlet opening positioned downstream of the air inlet opening; a swirler vane support; a plurality of swirler vanes arranged on the swirler vane support, a swirler air passage extending between neighbouring swirler vanes from the inlet opening to the outlet opening, the swirler air passage being delimited by swirler air passage walls, a surface of the swirler vane support and a surface of the burner head, the swirler air passage walls comprising corrugated downstream wall sections adjoining the air outlet opening; and a fuel injection system, comprising a first fuel injection opening arranged in one of the swirler air passage walls for injecting a fuel into the swirler air passage, and a second fuel injection opening arranged in the swirler vane support.