Patent ID: 7520745

Claim:
A premix burner comprising: a swirl generator comprising an interior space, cone shells, and defining a cone half angle α; a mixing section which follows the swirl generator in the direction of flow; passages configured and arranged to feed compressed combustion air into the swirl generator; and a high-pressure nozzle having an interior space and configured and arranged to atomise liquid fuel, at least one fuel passage configured and arranged to feed fuel into the nozzle interior space, the nozzle having at least two outlet passages which lead from the nozzle interior space to the interior space of the swirl generator and are arranged off center with respect to the longitudinal axis of the nozzle and are oriented so that spray cones when emerging from the outlet passages are directed onto the wake of the individual cone shells; wherein the outlet passages are configured and arranged so that the spray cones when emerging each have a longitudinal axis running at an angle β with respect to the longitudinal axis of the swirl generator which is greater than zero and smaller than the cone half angle α of the swirl generator.