SOUND INSULATING ENCLOSURE WITH AERODYNAMIC SILENCERS Russian patent published in 2017 - IPC E04B1/84 G10K11/16 

FIELD: machine engineering.

SUBSTANCE: sound-insulating enclosure with aerodynamic silencers made in the form of a rectangular parallelepiped enclosing the process equipment, the process equipment is mounted on at least four vibration-insulating supports which are based on the floor of the building. Between the base of the process equipment and the cutout in the lower face of the rectangular parallelepiped, a gap is made to prevent the transfer of vibrations from the process equipment to the sound-insulating enclosure, and a fan is installed inside the enclosure to provide required microclimate when performing a technological process, the sound-insulating enclosure is provided with ventilation channels to eliminate equipment overheating. The inner walls of the ventilation channels are treated with a sound-absorbing material and an acoustically transparent material of "Poviden" type. To reduce the aerodynamic noise of the ventilation system, the noise silencers are provided in the enclosure and mounted at the inlet and outlet ventilation channels, respectively. A sound-absorbing element is fixed on the inner surface of the sound-insulating enclosure in the form of smooth and perforated surfaces, between which a multi-layer sound-absorbing structure is arranged, the silencers of ventilation system aerodynamic noise are installed at the inlet and outlet ventilation channels, respectively, are made in the form of chamber noise silencers, each of which contains a cylindrical body rigidly connected to the end inlet and outlet branch pipes, with a central partition, from the inside the housing is lined with sound-absorbing material, the central partition is made in the form of a sound-absorbing element having a framelined on both sides with a sound-absorbing material. Skeleton sound absorbing element is pivotable in a plane perpendicular to the direction of motion of the aerodynamic flow. The mineral wool on the basalt basis of the Rockwool type, or the mineral wool of the URSA type, or basalt wool of the P-75 type, or the glass wool with the glass fiber lining, or the foamed polymer, for example, polyethylene or polypropylene is used as the sound-absorbing material. The surface of the fiber absorbers is treated with the porous air-permeable paints (for example, "Acutex T") or covered with the air-permeable fabrics or non-woven materials, for example "Lutrasil".

EFFECT: improved noise silencing efficiency.

2 cl, 2 dwg