KOCHETOV LOW-NOISE MANUFACTURING BUILDING Russian patent published in 2017 - IPC E04B1/84 E04H9/02 

FIELD: physics, acoustics.

SUBSTANCE: invention relates to industrial acoustics. A low-noise manufacturing building comprises a building frame with a base, bearing walls with enclosures in the form of a floor and a ceiling, which are lined with sound-absorbing structures, window and door openings, as well as single-piece sound absorbers, comprising a frame in which sound-absorbing material is placed, and installed above noisy equipment, base bearing ceiling boards are provided at points of mounting thereof to the bearing walls of the building with a spatial vibration insulation system. The floor in rooms is made on an elastic base and comprises a mounting plate. The single-piece spherical sound absorber comprises active and reactive sound absorbers, arranged in a rigid frame, the frame being made of two parts. Parts of the sound absorber are connected by an elastic damping element, which enables to damp high-frequency vibrations, wherein an element, through which the frame is attached to the required object, is pivotally attached to the perforated cover of the a perforated cylindrical shell. The spherical resonance cavity of the reactive part of the frame is rigidly connected by at least one bushing with an axial opening, which performs the function of the neck of a Helmholtz resonator, with an external perforated spherical shell, and the space in between is filled with a sound absorber, wherein around the perforated cylindrical shell there is at least one helical sound-absorbing element, made in the form of a helical spring encircling the shell, wherein the helical sound-absorbing element is made in form of a hollow helical sound-absorbing element formed by external and internal helical surfaces forming a cavity, wherein the space formed by the external and internal helical surfaces is filled with sound-absorbing material. The material of the perforated surfaces used is in the form of structural materials whose surfaces are coated on one or two sides with a layer of soft vibration-damping material, for example VD-17 mastic compound, or Gerlen-D material or from stainless steel, or zinc-coated sheet with thickness of 0.7 mm with a polymer protective-decorative coating of the Pural type with thickness of 50 mcm, or Polyester with thickness of 25 mcm, or aluminium sheet with thickness of 1.0 mm and coating thickness of 25 mcm, or from solid, decorative vibration-damping materials, for example Agat, Antivibrit, Shvim plastic compound, the sound-absorbing material used are boards made of mineral wool on a basalt base of the Rockwool type, or mineral wool of URSA type, or basalt wool of the P-75 type, or glass wool with glass felt lining, wherein the sound-absorbing element on its entire surface is lined with an acoustically transparent material, for example, glass fabric of the EZ-100 type or "poviden" type polymer.

EFFECT: invention increases efficiency of soundproofing and seismic resistance of the building.

5 cl, 5 dwg