| 摘要 |
A gas burner (5) includes at least one mixing tube (4) mounted within a burner shell (13). Part of the surface of the burner shell (9) is formed from a perforated metal sheet (9) and a mesh screen (14). The mesh screen is formed from a series of different sized meshes, one of which is laid with the axis of its grid at 45{ to the longitudinal axis of the mixing tube (4). The mesh screen (14) forms a grid surface. The arrangement being such that a combustible gas fed via an end (10) of the mixing tube (4) is spread evenly under the mesh screen to be burnt as it filters through the mesh layers which glow to incandescence to produce infrared radiation which increases heat transfer. The burner (5) can be square, radial, circular, elliptical, oval, triangular or obround in cross section. The burner (5) can be incorporated under or around a cooking tank (1) in which foods are boiled, heated or fried. |
