Fluid guiding channel i.e. pipe bend, for high speed fan, has curved displacement guidance bodies formed as link silencers built into channel behind fan, where link silencers exhibit increase of thickness along main flow direction

摘要

The channel has divergent channel exterior walls for limiting flow of fluid and comprising an inlet opening and an outlet opening for inflow and outflow of the fluid. A curved displacement guidance body is formed as link silencers (26) built into the channel behind a fan. The link silencers exhibit increase of thickness along main flow direction and allow maximum delay of flow without flow displacement. The link silencers are provided with a rectilinear running central line. Flooded surfaces of the displacement bodies are made from sound-transmissive materials (27).