SOUNDPROOFING ENCLOSURE FOR TECHNOLOGICAL EQUIPMENT Russian patent published in 2018 - IPC E04B1/82 G10K11/16 

FIELD: soundproofing.

SUBSTANCE: invention relates to acoustic isolation of equipment with means of broadband acoustic suppression and can be used in all sectors of the national economy as a means of protection against noise. Soundproofing enclosure is made in the form of a rectangular parallelepiped, covering the process equipment, technological equipment is installed on at least four vibration-proof supports, which are based on the bridging of the building. Clearance between the base of the process equipment and the cutoff in the lower face of the rectangular parallelepiped is made. In the soundproof enclosure, ventilation ducts are made. Internal walls of the ventilation ducts are treated with a sound-absorbing material and an acoustically transparent material of the poviden type. On the soundproofing enclosure inner surface, a sound-absorbing element in the form of a smooth and perforated surfaces is secured, between which the is a combined sound-absorbing layer of a complex shape, which is an alternation of solid sections and hollow sections, the frame of which is made from a rigid sound-absorbing material, the hollow sections are formed by prismatic surfaces, that are in their cross-section parallel to the plane of the drawing, have the shape of a parallelogram, whose inner surface has a toothed or wavy structure. Teeth tops face inside the prismatic surfaces, and the ribs of the prismatic surfaces are fixed respectively on the smooth and the perforated surfaces. Cavities formed by smooth and perforated surfaces, between which a combined sound-absorbing layer of complex shape is arranged, are filled with a soft sound-absorbing material, and cavities of the hollow sections formed by the prismatic surfaces are filled with a foamed polymer. Cavities of hollow sections formed by prismatic surfaces, are connected by resonant holes with the cavities formed by the smooth and the perforated surfaces, between which the composite sound-absorbing layer of a complex shape is located, material of perforated surface is made of solid, decorative damping materials, for example, elastrons "Agat", "Antivibrit", "Schwim", and the inner surface of the perforated surface, facing the sound-absorbing structure, is lined with an acoustically transparent material, for example, EZ-100 glass cloth or poviden polymer.

EFFECT: technical result is to increase the efficiency of noise suppression.

1 cl, 3 dwg