Patent ID: 8069671

Claim:
A burner for a combustion chamber of a turbogroup, the burner comprising: a burner head; a swirl generator enclosing a burner interior on an inlet side and which has at least one tangential air inlet relative to a longitudinal center axis of the burner; a mixer enclosing the burner interior on an outlet side and which has an outlet opening which is open towards a combustion space of the combustion chamber; a lance configured and arranged to introduce pilot fuel into the combustion space, which lance is arranged coaxially to the burner longitudinal center axis and extends from the burner head into the burner interior; wherein the lance is configured and arranged so that at least when in a pilot mode of the burner the lance extends far enough into the burner interior for a flame front of a combustion reaction, which takes place in the combustion space, to extend at least partially into an end section of the burner interior which is enclosed by an outlet-side end region of the mixer; and wherein the lance is positioned on the burner head and is longitudinally-adjustable so that, depending upon requirement, the lance can be retracted by a greater or lesser depth into the burner interior and can be extended from the burner interior by a greater or lesser distance.