CENTRIFUGAL FAN INSTALLATION Russian patent published in 2010 - IPC F04D17/08 

FIELD: engines and pumps.

SUBSTANCE: centrifugal fan installation includes hollow housing covered on edges with bottoms, supply and discharge branch pipes, as well as impeller mounted in the housing and kinematically connected to its rotation drive; at that, bottoms are hollow; casing is installed outside the housing with a gap, impeller is arranged in the casing installed inside the housing, inner surface of the casing forms together with the impeller blades the channel of spiral shape, which is connected to the discharge branch pipe installed on the housing, supply branch pipe is arranged in one of the bottoms and introduced to the cavity of the casing, impeller is mounted on the drive shaft provided with channels and installed with possibility of rotation in the hub fixed in the second bottom; at that, cavity of the gap between the housing and casing, cavities of bottoms and channels of drive shaft have the possibility of being connected to cooling agent pumping system.

EFFECT: effective cooling of the installation at circulation of high temperature gas medium through it under pressure during long time.

1 dwg