Patent ID: 8033821

Claim:
A burner for premix combustion comprising a swirl generator ( 1 ) and a downstream mixer tube ( 2 ) for combusting at least one fuel ( 13 , 39 ) which is introduced into a burner interior space ( 16 , 17 ) of the swirl generator ( 1 ) or of the mixer tube ( 2 ), wherein in a transition section ( 6 , 8 , 40 ) from the swirl generator ( 1 ) to the mixer tube ( 2 ) and/or downstream of the transition section ( 6 , 8 , 40 ), the burner further comprises at least one additional feed ( 18 , 19 , 22 ) for introducing at least one additional fuel into the mixer tube ( 2 ), wherein in the transition section ( 6 , 8 , 40 ), in the region of, or directly downstream of, transfer passages ( 6 ) which are arranged there, at least one feed ( 19 , 22 ) for gaseous fuel is arranged, said gaseous fuel feed introduces gaseous fuel via at least one row of discharge openings ( 21 , 24 ), said feed introduces gaseous fuel via at least one row of discharge openings ( 21 , 24 ), wherein at least one row of discharge openings ( 21 , 24 ) are arranged essentially at the same level in the flow direction, said at least one row of discharge openings ( 21 , 24 ) can be operated separately ( 20 , 23 ), and/or are arranged in an offset manner in the flow direction and/or are formed in different sizes, and/or with regard to the injection direction are set so that the inner wall regions of the burner are not impinged upon by fuel.