STAGED PREMIX BURNER WITH AN INJECTOR FOR LIQUID FUEL

摘要

An injector ( 4 ) for liquid fuel ( 6 a) and a premix burner, in particular for combustion chambers of gas turbines which burner includes an injector ( 4 ) of this type, includes a swirl nozzle ( 14 ) which is surrounded by a shielding-air passage ( 11 ) and has an enlarged cross section of flow in the region of a nozzle-internal swirl generator ( 12 ) for the liquid fuel ( 6 a), with this enlarged cross section of flow being reduced again toward an exit opening of the swirl nozzle ( 14 ). The injector allows the premix burner to operate with a reduced admission pressure and a high atomization quality.