COMPLEX FOR ACOUSTICAL PROTECTION OF THE OPERATOR Russian patent published in 2018 - IPC E04B1/82 G10K11/16 

FIELD: security facilities.

SUBSTANCE: invention relates to means of safety of operation of operators in emergency situations, particularly at high levels of noise. Technical result is achieved by the fact that the complex for acoustic protection of the operator contains the operator’s workplace, equipped with noise reduction means, the operator’s workplace is located between acoustic screens, and an acoustic suspended ceiling is installed above the working area, and to reduce sound vibrations, the operator’s workplace is equipped with a floor on an elastic base, and also provides a rocker absorber, which consists of a rigid frame suspended from hooks on cables to the building’s ceiling, with a sound-absorbing material located inside the frame, wrapped with mesh nylon cloth, and an expanded steel sheet is attached to the frame, while the sound-absorbing element is used in the construction of the wall sound-absorbing panel, containing smooth and perforated surfaces, between which a multi-layer sound-absorbing structure is placed, which is made in the form of rigid and perforated walls, between which there are layers of sound-reflecting and sound-absorbing materials of different density, arranged in two layers, with the layers of sound-reflecting material made of a complex profile consisting of uniformly distributed hollow tetrahedra, and located respectively at the rigid and perforated walls, and the layers of sound-reflecting material made of insulating material, and as a sound-absorbing material, slabs of mineral wool on a basalt basis, or mineral wool, or basalt wool are used, or glass wool with glass cladding, the sound-absorbing element is lined with an acoustically transparent material over its entire surface, the sound-absorbing element containing smooth and perforated surfaces, between which there is a layer of sound-absorbing material of complex shape, and the edges of the prismatic surfaces are fixed respectively on the smooth and perforated walls, the cavities of the hollow sections formed by the prismatic surfaces being filled with a sound absorber, and between the smooth surface and the solid sections of the layer of sound-absorbing material of complex shape, as well as between the perforated surface and the solid sections there are resonant plates with resonant inserts, however, the sound-absorbing element is made in the form of a rigid and perforated walls, between which is a multi-layer sound-absorbing element, which is made in the form of two layers: one of which being adjacent to the rigid wall, is sound-absorbing, and the other being adjacent to the perforated wall, is made with the perforation from the sound-reflecting material of complex profile, in this case, a material based on aluminum-containing alloys was applied as a sound reflecting material, followed by filling them with titanium hydride or air.

EFFECT: technical result is the improvement in the efficiency of acoustic suppression.

1 cl, 9 dwg, 2 tbl