ACOUSTIC DISSIPATION ELEMENT FOR ACOUSTIC BAFFLES, PIECE SOUND ABSORBERS, PARTITIONS Russian patent published in 2015 - IPC E04B1/84 

FIELD: construction.

SUBSTANCE: invention relates to the industrial acoustics and can be used to reduce the noise of the machine drives, covering of industrial premises. Device comprises the perforated surfaces, between which the sound-absorbing multilayer structure is arranged. Layers of sound-reflecting and sound-absorbing materials of different densities are disposed between the perforated walls. Layers of sound-reflecting material are made of complex profile, consisting of uniformly distributed hollow tetrahedrons, located at the perforated walls. Layers of sound-reflecting material are made of heat-insulating material, capable to support the specified microclimate in the promise. Sound-absorbing element over the entire surface is covered with acoustically transparent material. Porous material or material in the form of the compressed crumbs made of solid vibration-damping materials is used as the sound-absorbing material.

EFFECT: increases efficiency of noise suppression and reliability of the design.

3 cl, 1 dwg, 1 tbl