| 摘要 |
The invention relates to a resonator (1, 11'') for reducing airborne noise, having at least one first ring-shaped chamber (2, 2', 2'') arranged between an inlet piece (6, 6') and an outlet piece (7, 7'), and having an inner tube (3) or inner tube pieces (4, 4'', 5) arranged between the inlet piece (6, 6') and outlet piece (7, 7'), and having wall apertures (18, 19, 28, 28'', 29, 29'', 30, 30'') as a connection to the adjacent ring-shaped chamber (2, 2', 2''). The invention is characterized in that the first ring-shaped chamber (2, 2', 2'') is divided by at least one radially encircling dividing rib (13, 13', 13'') into at least two sub-chambers (14, 14', 14'', 15, 15', 15''), and in that the dividing rib (13, 13', 13'') has a free end which, relative to the wall which is adjacent in a radial direction, forms an encircling ring-shaped gap (16) for receiving an air layer which resonates in steady-state fashion. |
