| 摘要 |
In flame injection equipment which has a flame injector, a blast pipe surrounding the flame injector and extending forwardly from an air blower for blowing out thereof an oxygen-containing gas, and an air baffle plate, provision is made to increase the combustion efficiency of fuel supplied to the flame injector and the temperature of flame injected from the flame injector. To this end, at a fourth position between the position corresponding to a flame injection nozzle of the flame injector and the position corresponding to the tip of an inner flame of the flame injected from the flame injector, there is disposed concentrically with the flame a turbulent vortex flow generating annular plate which has an inner diameter larger than the outer diameter of the flame at the fourth position but smaller than the diameter of an extended open end of the blast pipe and an outer diameter smaller than the diameter Õ2 of the extended open end of the blast pipe when the fourth position is the position corresponding to the tip of the blast pipe or backward thereof but has an outer diameter smaller than the diameter Õ2 or equal to Õ2 or larger than Õ2 when the fourth position is forward of the position corresponding to the tip of the blast pipe. |
