Centrifugal blower for air handling equipment

Details Centrifugal blower for air handling equipment Centrifugal blower for air handling equipment

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 29/42 (2006.01) F04D 29/66 (2006.01)

Patent

CA 2615829

An air handling blower for HVAC equipment includes a blower housing adapted to accommodate centrifugal impellers of selected inside and outside diameters of the impeller blades wherein the inside diameter of the largest diameter impeller accommodated by the housing is not less than the outside diameter of the smallest diameter impeller accommodated by the housing without loss of performance. The blower housing preferably has a continuously increasing cross- sectional airflow area for air being discharged from the blower and extending from a cutoff edge to an outlet.

Cette invention concerne un ventilateur de traitement d~air destiné à un appareil CVCA, comprenant un carter de ventilateur conçu pour accueillir des turbines centrifuges avec des aubes de diamètres intérieurs et extérieurs sélectionnés, le diamètre intérieur de la turbine au diamètre maximal logée dans le carter n~étant pas inférieur au diamètre extérieur de celle au diamètre minimal logée dans le carter sans perte de performance. Le carter de ventilateur possède de préférence une zone de circulation d~air à section croissante en continu pour la sortie de l~air du ventilateur et s~étendant d~un bord de fermeture à un orifice de sortie.

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