Patent ID: 7632091

Claim:
A premix burner for producing an ignitable fuel/air mixture, comprising a support structure: a swirl generator having at least two burner shells positioned circumferentially around the support structure to complement one another to form a throughflow body, each burner shell having a first burner shell section having a partial cone shape enclosing an axially conically widening swirl space and which mutually defines, in an axial cone longitudinal direction, tangential air inlet slots though which combustion feed air can pass into the swirl space and from which an axially spreading swirl flow can form, means for feeding fuel arranged at least in sections along the tangentially running air inlet slots, a second burner shell section curved in opposition to the first burner shell section and having a partial cone shape flush to said first burner shell section, and a third burner shell section adjoining the second burner shell section flush, said third burner shell section having a curvature tangentially continuous to the second burner shell section, the third burner shell section defining on one side one of the tangential air inlet slots an having a leading edge past which combustion feed air can flow, the third burner shell section curvature, merging continuously and smoothly into the curvature of the second burner shell section, and all locations of a change of curvature describing a turning point line; wherein the means for feeding fuel is positioned along the turning point line; wherein the second burner shell section directly extends from the first burner shell section, and the first, second, and third burner shell section form a continuous surface and wherein the swirl space is formed between circumferentially adjacent burner shells.