KOCHETOV(S SOUND-ABSORBING STRUCTURE FOR INDUSTRIAL BUILDINGS Russian patent published in 2016 - IPC E04B1/82 

FIELD: building.

SUBSTANCE: invention relates to industrial acoustics, in particular to a broadband sound insulation and may be used for attenuation by absorption of production equipment. Sound-absorbing structure of an industrial building, comprising a profiled and perforated wall, between which a layer of sound-absorbing material, wherein one of the walls is smooth and sound absorbing material is disposed in two layers, one of which is more rigid, made solid and profiled, and other soft is made discontinuous and is located under the first layer, the sound-absorbing device manufacturing facilities contain frame windows, doorways, openings for placement of lamps and the acoustic enclosure, having a smooth, perforated wall, between which a sound absorbing material disposed in two layers, one of which , more rigid, it is made solid and profiled, and another soft, made discontinuous in the form of discontinuous absorbers located at the focus of acoustically reflective surfaces of the first layer, continuous profiled layer of sound-absorbing material made of a material whose coefficient of reflection of sound is greater than the absorption coefficient, and intermittent sound absorber located at the focus of a continuous structured layer, is in the form of bodies of revolution, such as spheres, ellipsoid, cone, truncated cone, and is fixed to the perforated wall with the help of pins, one end of which is rigidly fixed to the perforated wall and the other is made sharp and is located body intermittent absorbers.

EFFECT: improving the efficiency of noise reduction by expanding the frequency range and secondary absorption of sound waves reflected from the absorber.

2 cl, 4 dwg