METHOD FOR ACOUSTIC ISOLATION OF EQUIPMENT Russian patent published in 2018 - IPC E04B1/82 G10K11/16 

FIELD: acoustics.

SUBSTANCE: invention relates to acoustic isolation of equipment with means of wide range acoustic suppression and can be used in all sectors of the national economy as means of protection from noise. Method of acoustic isolation equipment is that the sound-insulating fence is installed on flooring of building and is lined with acoustic dissipation element. Sound-insulating fence is made in the form of rectangular parallelepiped with a cut-out in its lower bound under the base of process equipment. Base of the process equipment is installed on at least four antivibration mounts, which are based on the flooring of the building. Between the base of the process equipment and cut-out in the lower bound of the rectangular parallelepiped, a split is made to exclude the vibratory transfer from the process equipment to the sound-insulating fence, in which air ducts are made to eliminate superheat of equipment. Internal walls of the air ducts are treated with a sound-absorbing material and an acoustically transparent material. Calculation of required acoustic isolation of jacket as non tight fence is carried out according to certain dependence. Sound-absorbing element, which is fixed on the inner surface of the sound-insulating fence, is made in form of a smooth and perforated surface, between which layer of complex shape is placed, which is an alternation of solid sections and hollow sections. 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. Tops of the teeth face inside the prismatic surfaces, and the edges of the prismatic surfaces are fixed respectively on the smooth and perforated walls. Cavities of the hollow sections, formed by prismatic surfaces, are filled with a sound absorber, and between the smooth surface and continuous sections of the layer of sound-absorbing material of complex shape, as well as between the perforated surface and solid sections, there are resonant plates with resonant inserts performing the functions of the neck of Helmholtz resonators.

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

1 cl, 3 dwg