SOUND-ABSORBING STRUCTURE OF PRODUCTION ROOM Russian patent published in 2012 - IPC E04B1/99 

FIELD: construction.

SUBSTANCE: structure comprises a workshop frame, window, door openings, openings to install lamps, acoustic barriers and elements of a sound absorber, acoustic barriers are made in the form of a flat and a perforated walls, between which there is a sound-absorbing material arranged in two layers, one of which, a harder one, is arranged as solid and profiled, and the other one - a soft one - is arranged as interrupted and is installed in the focus of sound-reflecting surfaces of the first layer, besides, the solid profiled layer of the sound-absorbing material is made from a material with a sound reflection coefficient higher than a sound absorption coefficient, besides, profiles are formed by spherical surfaces joined to each other so that as a whole each profile forms an integral dome-shaped profile focusing the reflected sound to one and the same soft sound absorber, which is arranged in the focus of the solid profiled layer, arranged in the form of revolution bodies, and is fixed with the help of rods parallel to the perforated wall and rigidly joined with the smooth wall by means of vertical links.

EFFECT: increased efficiency of sound absorption.

3 dwg