| 摘要 |
A double suction centrifugal fan having an impeller where blades are arranged between a main plate, connected to the drive shaft inside a fan casing, and fan side plates, and also having a fan suction opening where the blades' inner diameter section formed by the blades functions as the suction opening. The blades' inner diameter on the side having a greater pressure loss in a suction air path connected to the fan suction opening is set smaller than the blades' inner diameter on the side having smaller pressure loss. In the double suction centrifugal fan, rise to full pressure of the blades can be equalized in the direction of the axis of the drive shaft, and the fan is compact with required amount of air flow secured. |
