RU2018113094A - METHOD OF SOUND INSULATION OF EQUIPMENT AND SOUND INSULATION FENCE - Google Patents

Claims (3)

 The method of soundproofing equipment, which consists in the fact that the soundproofing fence is installed on the floor of the building by means of at least four vibration-absorbing supports made of elastic material, for example soft rubber, polyurethane, and is lined on the inside with a sound-absorbing element, characterized in that it is sound-insulating the fence is made in the form of a rectangular parallelepiped with a cutout in its lower face under the base of the technological equipment, while the base of the technological of which equipment is installed on at least four vibration-isolating supports based on the floor of the building, while a gap is made between the base of the technological equipment and the cutout in the lower face of the rectangular parallelepiped to prevent transmission of vibrations from the technological equipment to the soundproof fence, in which perform ventilation ducts to eliminate overheating of the equipment, while the inner walls of the ventilation ducts are treated with sound-absorbing materials ialom and an acoustically transparent material of the “seen” type, while the sound-absorbing element is fixed on the inner surface of the soundproof fence and is made in the form of smooth and perforated surfaces, between which a multilayer sound-absorbing structure is placed, and the required sound insulation of the casing, as an unpressurized fence, dB, is calculated according to next dependency

, where R _leather.tr is the required sound insulation of the casing, dB, R _si is the average sound insulation of the solid part of the fencing of the i-th casing, dB;

- reverberation coefficient of sound absorption inside the i-th casing; where α _o - reverberation coefficient of sound absorption for fences without sound-absorbing material; α _m - reverberation coefficient of sound absorption of sound-absorbing material; Σ S _M is the area of application of sound-absorbing material, m ² , τ _i is the energy coefficient of sound transmission through the silencer of the technological hole (for a simple hole τ _i = 1, and a simple hole is considered to be a hole without a silencer, as in our case); ΣS _oi is the total area of technological holes for the i-th machine casing, m ² ; ΣS _i - total area of the solid part of the fence, m ² .