| 摘要 |
PURPOSE:To improve blast performance by radially forming several rises from a main disc of an impeller to use an inertia effect of suction performed at a suction hole. CONSTITUTION:Several rises 5 are formed upright from a main disc 1. The rises 5 act as supplementary blades when an impeller is turned in the direction of an arrow X. When gas is sucked from a suction hole of a casing via a suction hole of a shroud 3 by the turning of blades 2, the suction of the gas may be positively performed. Resultantly, reduction in an inertia effect of the suction may be compensated and efficiency of the impeller may be improved. |
