| 主权项 |
1. A gas burner (10) comprising a bowl-shaped base body (12), a burner crown (14) arranged on the base body (12) and an upper cap (16) arranged on the burner crown (14), wherein a plurality of flame ports (34) is provided to let out a gas-air mixture towards to a recipient (36) to be heated, wherein the burner crown (14) is provided with a mixing zone (28) for mixing the gas-air mixture fed into the burner crown (14), and wherein the mixing zone (28) is formed as an annular chamber whose cross section incrementally expands away from the upper cap (16) to define a steady zone (30), the steady zone (30) having a continuous perimeter section in a radial direction and being formed below the flame ports (34), wherein the steady zone is configured to distribute the gas-air mixture to the flame ports (34) in such a manner that the gas-air mixture leaves the flame ports (34) in an essentially vertical direction. |
