| 摘要 |
A burner includes a generally cylindrical casing (1) and a burner head (2) mounted within the casing, the burner head including one or more vanes (9) rotatably mounted on the head and rotatable about the head to sweep through a region between the burner head (2) and the casing (1). The vanes (9) each include one or more gas outlets for introducing gas into an air flow through the region. |
