Patent ID: 7108478
Filing Date: 2006-09-19
Classification: F04D,F24F

Abstract:
1. In an air handling unit for an HVAC system, a combination comprising a cabinet including an air inlet opening and an air discharge opening, a centrifugal, motor driven air handling blower disposed in said cabinet, said blower including a blower housing having opposed sidewalls, portions of which extend axially with respect to an axis of rotation of an impeller of said blower in opposite directions toward opposed walls of said cabinet providing a flow path for air flowing into said cabinet and into at least one air inlet opening of said blower and providing for distribution of airflow entering said inlet opening of said blower with respect to said axis along flow streamlines which extend to said inlet opening substanially all of said inlet opening; wherein each of said sidewalls of said blower housing includes at least one axially extending portion configured in combination with an end wall of said blower housing to provide a substantially continuously increasing cross-sectional flow area for throughput air of said blower housing, said axially extending sidewall portions being disposed adjacent an end wall portion of said blower housing; and wherein said blower housing includes at least three circumferentially spaced axially extending portions of said sidewalls of said blower housing, respectively, and disposed adjacent corresponding portions of said end wall of said blower housing.