Low frequency noise and turbulence reducer

Details Low frequency noise and turbulence reducer Low frequency noise and turbulence reducer

E - Fixed Constructions

04

F

172/23

E04F 17/04 (2006.01) F24F 13/24 (2006.01) F24F 13/14 (2006.01)

Patent

CA 1188227

Low Frequency Noise and Turbulence Reducer Abstract Low frequency noise and turbulence are reduced in a damper structure by providing a perforate screen extension onto the damper blade so as to extend across the flow path when the damper is open. Additionally, a perforate screen is located immediately downstream of the damper and spaced from the wall so as to define a chamber therewith as well as defining a boundary of the flow path.

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