| 摘要 |
A burner has a nozzle formed of generally concentric inner and outer pieces (21,23). The inner piece (21) defines a fuel conduit (37), and the outer piece (23) defines an annular gas conduit (25) which tapers down towards the outlet end of the nozzle. The inner piece (21) has a rounded edge (51) near the outlet end, is longitudinally translatable, within a limited range of movement, relative to the outer piece, and can be locked into a desired position. The nozzle promotes efficient mixing of fuel and air (or oxygen) outside the burner. The stream of gas, typically air, creates a partial vacuum in the vicinity of the outlet end, serving to draw fuel out of the fuel conduit (37). Longitudinal adjustment of the inner piece (21) allows the shape of the flame to be optimized. The burner can be used with virtually any fuel that can be provided in fluid form, whether solid, liquid or gas. |
