SOUND-ABSORBING DEVICE Russian patent published in 2009 - IPC G10K11/16 E04B1/82 

FIELD: physics.

SUBSTANCE: sound-absorbing device contains profiles and perforated walls with the layer of a sound-absorbing material arranged there between. Sound absorber elements comprise a skeleton suspended with the help of hooks, for example on cables, or directly attached to a rigid wall or a production area ceiling, the skeleton being made in the form of three cubic surfaces, first of which, an external one arranged in the sound-absorbing material layer filling the space between the first and second cubic surfaces. The third cubic surface located inside the second one and jointed to the said greater-diameter resonance. Note that the second and third surfaces are rigid. The sound-absorbing material wrapped up by a mesh-like kapron fabric, is arranged in the space between the skeletons jointed together by means of the aforesaid resonance inserts and different-diameter openings. Note that aforesaid resonance inserts can accommodate lighting fixtures with power supplies, while the filling represents a sound-absorbing nonflammable material, for example vinipor, fiber glass with a blanket from the fiber glass fabric to prevent sound absorber from falling outside.

EFFECT: higher efficiency of sound absorption.

2 cl, 2 dwg