SOUND ATTENUATOR DEVICE FOR A VACUUM PUMP

摘要

The invention relates to an enclosure device (10) covering the sound source (1). The enclosure (10) is made of a multilayer acoustically absorbent material having low thermal inertia and is characterised in that a narrow free space, or air film, is provided between the enclosure (10) and the sound source (1), such as to ensure ventilation around the sound source (1).