KOCHETOV'S SINGLE SOUND ABSORBER Russian patent published in 2018 - IPC F01N1/04 

FIELD: acoustics.

SUBSTANCE: sound absorber is designed to damp the noise of compressor stations. Sound absorber contains a cylindrical frame in the form of a perforated sleeve and covers, filled with a sound absorber, and on the outside of the sleeve there is a layer of an acoustically transparent shell, made of a nylon mesh or fiberglass, and the frame comprises caps with annular beads for securing the cylindrical sleeve, the lids being connected by a central rod to the hooks at both ends, and the cylindrical bushing consists of two perforated shells, external and internal, space between which is filled with sound absorbing element. Sound-absorbing element contains perforated walls, between which there are layers of sound-reflecting, as well as sound-absorbing materials of different densities, located in two layers, the layers of the sound-reflecting material being made of a complex profile consisting of uniformly distributed hollow tetrahedral that allow the reflected sound waves to fall in all directions, and which are located respectively at the perforated walls.

EFFECT: technical result is the increased efficiency of noise suppression.

1 cl, 2 dwg