Centrifugal fan with sliding inlet control system

Details Centrifugal fan with sliding inlet control system Centrifugal fan with sliding inlet control system

F - Mech Eng,Light,Heat,Weapons

04

D

230/4

F04D 29/56 (2006.01)

Patent

CA 1317916

IMPROVED CENTRIFUGAL FAN ABSTRACT A centrifugal fan in which the cone and wheel have a telescoping relationship to vary the rated capacity of the fan. The mechanism effects the relative movement manually, or by a servo arrangement responsive to system pressure. The telescoping relationship includes an anti-recirculation sleeve on the cone. The wheel and cone can be moved to effect engagement of the cone and the wheel back plate to cut off the fan, when in a parallel arrangement, and to arrest wheel movement, after the drive to the wheel has been stopped. In another aspect, the cone and wheel are bodily stationary and a separate movable flow control sleeve is positioned to control flow.

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