Stiffening rib for fan wheel or water tank - has sharp cut=off edge inclined in direction of flow to form rib boundary

摘要

Stiffening rib for a fan wheel, a water tank or the like, where the stiffening rib (5) does not run in the main direction of flow (9) and forms an angle with it. The stiffening rib has a flow surface (5a) inclined in the direction of flow which ends with a sharp cut-off edge (10) forming the longitudinal boundary of the rib. ADVANTAGE - Stiffening rib arrangement which destroys as little as possible of the flow energy and has a low noise output.