Patent ID: 6817831
Filing Date: 2004-11-16
Classification: F01P,F04D

Abstract:
An automotive engine-cooling fan assembly comprisinga) a first fan driven by a first motor, said first motor being supported by a first motor mount, said first motor mount being supported by a first set of arms, said first set of arms extending to and being supported by a shroud, and b) a second fan, driven by a second motor, said second motor being supported by a second motor mount, said second motor mount being supported by a second set of arms, said second set of arms extending to and being supported by said shroud, and c) a heat exchanger, and where said shroud guides the flow of air at least a portion of the distance between said fans and the core of a heat exchanger, andwhere said first fan and said second fan are each characterized by a diameter, andwhere said first fan and said second fan each comprise a hub and a plurality of elongated blades, each of said blades having a root, a tip, a leading edge, and a trailing edge,further characterized in that said first and second fans overlap each other when viewed axially from the upstream or downstream direction, andfurther characterized in that said first set of arms is located upstream of said first fan and said second set of arms is located downstream of said second fan.