| 摘要 |
A device for muffling the sound produced by a fluid in a duct, especially the sound produced in an intake pipe of a combustion engine, comprises a wall, whose inside defines a flow passage for the fluid. The device is at least partly tubular, i.e. it has two openings. At the outside of the wall ( 3 ) is arranged a plurality of chambers ( 4 ), each of which is connected to the flow passage via an aperture ( 7 ). The chambers ( 4 ) are bounded by the outside of the wall ( 3 ) as well as by bars ( 5, 6, 8 ) formed at the outside of the wall ( 3 ). The chambers ( 4 ) function in use as Helmholtz resonators. In addition, a device for the conduction of a fluid with the sound proofing device ( 1 ) described is presented.
|
