DEVICE FOR ATTENUATING THE NOISE OF A FLUID FLOW CIRCUIT, AND FLUID FLOW CIRCUIT INCORPORATING SUCH A NOISE ATTENUATION DEVICE

摘要

Device for attenuating the noise of a fluid flow circuit, in the form of a duct (1) having a main duct section (4) delimiting an axial fluid passage connecting the fluid inlet (2) and the fluid outlet (3), this main duct section (4) communicating via at least one opening with at least one noise attenuation chamber (6) that is arranged, in the manner of a wart or a boss, on the periphery of the main duct section (4), the or each chamber (6) and the main duct section (4) produced as a single component being delimited by a bottom end (7) and a peripheral wall (8) connecting the bottom end (7) to the main duct section (4). The peripheral wall (8) of the or each noise attenuation chamber (6) is a pleated wall (8) in the form of bellows with a transverse longitudinal axis preferably substantially perpendicular to the mean longitudinal line of the main duct section.