Air duct fans are axial fans, which because of their design, emit high level of noise during operating. Referring to that fact the fans should be equipped with silencers, one on the outlet and the second one on inlet. The silencers lower the noise level of the fan to the permissible value of 85 dBA.
Silencer has welded design and includes the following elements: T
- Outer coat pos. 1
- suppressing layer pos. 2
- Connecting flanges pozs. 3
- Inner suppressing insert pos. 4
- Flow canal made of perforated metal plate .K pos. 5