Roots fan acoustic enclosure basic requirements and air exchange methods
Roots fan acoustic enclosure is the noise in the enclosure, so that it does not escape the noise control device. The basic requirements of the acoustic enclosure is: 1. good acoustic performance, sound insulation is relatively large; 2. air exchange device, good heat dissipation performance; 3. observation device, not open the door of the enclosure can be monitored on the blower; 4. there is a suitable space, do not dismantle the enclosure can be refueling, change the belt, and other simple operations; 5. transportation and installation is convenient, the price is appropriate, and so on.
There are two types of air exchange methods for acoustic enclosures. In the self-absorbing air exchange mode, the blower air inlet is located inside the hood, the hood is equipped with an anechoic channel for air intake, when working with the blower itself to carry out the need to form a negative pressure inside the hood, which will be outside the hood of the fresh air from the anechoic channel sucked into the hood; Mechanical ventilation, the blower air inlet connected to the closed pipeline, usually in the hood body to install a special fan, the hood will be sucked out of hot air in time, the hot air, and at the same time, create a negative pressure in the hood. At the same time, negative pressure is created inside the hood, and the cold air outside the hood is sucked in.
From the acoustic structure, acoustic enclosure is usually divided into single-layer and double-layer structure. Single-layer sound insulation components are mainly composed of cover plate, damping coating, sound-absorbing layer and surface protection layer. Double-layer sound insulation components in the middle of the two single-layer components sandwiched between a certain thickness of air layer, its sound insulation is higher than the single-layer.
Learn more about Roots fans at:https://csroots.cn
