Abstract: A centrifugal blower is described herein. The centrifugal blower may be a belt-driven geared centrifugal blower. The centrifugal blower may comprise an impeller, an inlet, and an outlet. The impeller pulls air in through the inlet, compresses and speeds up the air, and directs the air out the outlet. A motor may power a pulley system coupled to the belt that, in turn, drives a gear set. The gear set then drives the impeller. A mounting frame for the centrifugal blower may comprise a plurality of mounting holes for increasing the airflow to the gear set for cooling there. A belt tensioner may be coupled to the pulley system for setting a preload in the pulley system. An adjustment system for adjusting the tension provided by the belt tensioner is disclosed.

Abstract: A centrifugal blower is described herein. The centrifugal blower may be a belt-driven geared centrifugal blower. The centrifugal blower may comprise an impeller, an inlet, and an outlet. The impeller pulls air in through the inlet, compresses and speeds up the air, and directs the air out the outlet. A motor may power a pulley system coupled to the belt that, in turn, drives a gear set. The gear set then drives the impeller. A mounting frame for the centrifugal blower may comprise a plurality of mounting holes for increasing the airflow to the gear set for cooling there. A belt tensioner may be coupled to the pulley system for setting a preload in the pulley system. An adjustment system for adjusting the tension provided by the belt tensioner is disclosed.