KOCHETOV SINGLE-PIECE SOUND ABSORBER Russian patent published in 2014 - IPC E04B1/84 

FIELD: physics, acoustics.

SUBSTANCE: invention relates to industrial acoustics, particularly to broadband soundproofing, and can be used in all industries as a soundproofing means. In a single-piece sound absorber, consisting of a perforated frame filled with sound-absorbing material, placed in a protective casing, the frame consists of a bottom part with a conical shape with a cover and a top part in the form of an axially symmetric body of revolution with a cylindrical shape with top and bottom flat bases. The external toothed surface of said body has a toothed shape in the section perpendicular to the axis of the body of revolution. The internal surface is in the form of a cylindrical shell arranged coaxially with respect to the cylindrical surface around which triangular teeth are located.

EFFECT: high efficiency of soundproofing.

2 cl, 2 dwg