LOW NOISE SHOP Russian patent published in 2011 - IPC E04B1/84 

FIELD: machine building.

SUBSTANCE: sound absorbing design of shop consists of case of shop, of bearing walls with barriers in form of floor and ceiling which are covered with sound absorbing structures, and of window and door openings. Single-piece sound absorbers are arranged over noisy equipment; sound absorbers consist of a case wherein there is arranged sound-absorbing material. The floor is made on a flexible base and contains a mounting plate made of concrete reinforced with vibro-damping material. The mounting plate is set on the base plate of an inter-floor bridging with cavities through layers of vibro-damping material and hydro-insulating material with a gap relative to bearing walls of the shop. The cavities of the base plate are filled with vibro-damping material, for example, foam polymer. The ceiling is made acoustic suspended; it consists of a rigid frame in form of a rectangular parallelepiped suspended to the ceiling of the shop. Inside the frame there is located sound absorbing material wrapped with acoustic transparent material. A perforated sheet is attached to the frame.

EFFECT: raised efficiency of noise damping.

5 cl, 3 dwg