Patent ID: 6461151
Filing Date: 2002-10-08
Classification: F23C,F23R

Abstract:
A premix burner for a heat generator, essentially comprising:a swirl generator for combustion air, means for spraying at least one fuel into the combustion air contained in the swirl generator; and a mixing section arranged downstream of the swirl generator and arranged upstream of a combustion chamber, and having, inside a first part of the mixing section in the direction of flow, a number of transition passages for passing a flow formed in the swirl generator into a mixing tube arranged downstream of these transition passages, the mixing tube having a breakaway edge with a radius in the region of the outlet adjacent the combustion chamber, wherein the radius is variable over the circumference of the mixing tube in such a way that a shape of a transition from the mixing tube to the combustion chamber is variable from a circle to an ellipse and consequently an ellipsoidal flame is obtained.