Sound-deadening duct for aeriform fluids and method of manufacturing same

摘要

Sound-deadening duct for aeriform fluids (11) comprising a hollow body (13) in which a side wall (15) and at least two axial openings (17, 19), for the inlet and outlet of air, respectively, are defined, wherein said side wall is provided with at least one radial opening (21) defining a corresponding channel (25) extending through said wall and wherein said wall is at least partially coated, internally or externally or on both opposite surfaces, with a layer (23) of sound-absorbing material that at least partially penetrates into the channel defined by said at least one opening.