KOCHETOV'S ACOUSTIC WORKSHOP STRUCTURE Russian patent published in 2014 - IPC E04B1/84 

FIELD: machine building.

SUBSTANCE: acoustic structure of a workshop comprises a framework, bearing walls, floor, ceiling, window and door openings, single-piece sound absorbers, noise suppressors. A single-piece sound absorber comprises a rigid perforated frame. The lower part of the frame is of conical form with a cover, and the upper part is of cylindrical form. The upper part is attached to the cover of the lower part of the perforated frame with the help of a vibration damping gasket. An element used to attach the frame to a necessary item is pivotally connected to the upper part of the cylindrical perforated frame. The cavities in the lower and upper parts of the perforated frame are filled by sound absorbing materials of different density. At least one screw sound absorbing element is mounted around the upper cylindrical part of the perforated frame. The screw sound absorbing element is made as a hollow screw sound absorbing element formed by outer and inner screw surfaces forming a cavity, the space formed by the outer and inner screw surfaces is filled by sound absorbing material.

EFFECT: improved efficiency of noise suppression.

3 cl, 7 dwg, 2 tbl