SOUNDPROOFING METHOD Russian patent published in 2017 - IPC E04B1/84 G10K11/16 

FIELD: construction.

SUBSTANCE: in the equipment soundproofing method consisting in that the soundproofing enclosure will be installed on building flooring by at least four antivibration bearings made of elastic material, such as soft rubber, polyurethane and coat it on the inner side with sound-absorbing element, the soundproofing enclosure is made in the form of a rectangular parallelepiped with a cutout in its lower edge for the technological equipment base. The technological equipment base is installed on at least four antivibration bearings, which are based on the building flooring. Between the technological equipment base and the cutout in the lower edge of the rectangular parallelepiped, a gap is made to prevent the vibrations transfer from the technological equipment to the soundproofing enclosure where ventilation channels are made to eliminate equipment overheating. The internal walls of the ventilation ducts are treated with a sound-absorbing material and an acoustically transparent material of "poviden" type. The sound-absorbing element is fixed to the inner surface of the soundproofing enclosure and is made in the form of smooth and perforated surfaces between which a multi-layer sound-absorbing structure is placed. Calculation of the required soundproofing of the casing, as an untightened enclosure, dB, is carried out according to the following relations: . The multylayer sound-absorbing structure of the sound-absorbing structure element, which is fixed on the inner surface of the soundproofing enclosure, is made in the form of four layers: the first layer is reflecting, it's made solid and profiled, shaped of complex polygon profile and consists of inclined side planes, connected at the lower part by horizontal edges and between the side planes and the rigid wall, there is the second layer made from sound absorbing material. Between the perforated wall and the sound-reflecting layer with an air gap relatively to the sound-reflecting layer, there is the third discontinuous layer from the soft sound-absorbing material, which is fixed to the perforated wall and is in the form of polyhedrons with equidistant and congruent surfaces, located below the corresponding side planes of sound-absorbing layer.

EFFECT: increased efficiency of sound suppression.

3 dwg