Centrifugal blower assembly with a pre-swirler for an automotive vehicle

摘要

A centrifugal blower assembly is disclosed. The blower assembly includes a centrifugal fan driven by an electric motor. The blower assembly housing includes a pre-swirler having a plurality of guide vanes which impart a predetermined amount of rotation to a volume of air as the air enters the centrifugal blower assembly. The guide vanes are disposed in a ring at the air inlet of the blower housing.