Patent ID: 6468150
Filing Date: 2002-10-22
Classification: F04D,G06F

Abstract:
A cooling system which reduces aerodynamic or electromagnetic noise comprising:a laminar flow duct, one side of said laminar flow duct defining a first planar region; one or more cooling fans in a housing, each fan having a toroidal fan opening and disposed for providing positive airflow over the first planar region, along a first linear axis substantially parallel to the first planar region; an airflow grille, defining a second planar region substantially perpendicular to said first linear axis, said airflow grille defining a set of through-holes substantially parallel to said first linear axis; and a first laminar flow region disposed between said cooling fans and said airflow grille, said first laminar flow region defined by said laminar flow duct, said laminar flow duct being coupled on a first end to the housing for said one or more cooling fans and on a second end to said airflow grille, and said laminar flow duct being substantially parallel to said first linear axis; wherein said cooling system reduces aerodynamic or electromagnetic noise.