| 摘要 |
PURPOSE: A sirocco fan with a dual blade is provided to remarkably reduce inflow resistance by guiding air flowing into the inside to a discharging unit along a shape of a supporting plate so that noise is reduced and a friction loss is minimized. CONSTITUTION: A sirocco fan(10) with a dual blade comprises a cylindrical member(20). An outer blade(21) is formed in a circumferential direction. The sirocco fan is shaft-joined to a shaft(41) of a driving motor(40). Air has flown through an inlet is discharged through the outer blade. An inner ventilator(30) is inserted inside the cylindrical member. A supporting plate(31) is formed in one end portion of the inner ventilator, and a plurality of inner blades(32) is arranged in the upper part of the inner ventilator. |
