| 摘要 |
A burner having an air supply and a premix channel having an essentially annular cross-section, through which air and fuel flow during operation, and which is formed of an outer shell (5) and a hub (6). A plurality of swirl blades (7) arranged in the burner extend from the hub (6) to the outer shell (7) in a radial direction. Each blade's surface (11) is provided with a deflection in a radial outer region of the swirl blade (7), a downstream flow angle (α) to a main flow direction (13) increases at least once and decreases at least once in a radial direction at an outflow end (12) of the deflection surface (11). |
