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KO Noise in compressor units
14 novembre 2024
1. Do you understand the noise in the compressor?
All machines produce noise and vibration, and compressors are no exception. Some characteristics of the room in which the compressor is located (such as the size of the room) may affect the noise level of the Compressore d'aria a vite VSD. In this article, we’ll take that a step further and introduce you to five ways to reduce noise. Learn more basics about sound here.
The noise level of the compressor is measured on the machine using standard methods (measurement in a free sound field environment such as outdoors without walls, or measurement using sound intensity scanning techniques). When a compressor is installed in a room, the noise level is affected by the characteristics of the room. The size of the room, the materials used in the walls and ceiling, and whether there are other devices in the room (and their potential noise levels) can all have a significant impact. Additionally, where the compressor is placed indoors can also affect noise levels due to the installation and connections of ducts and other components. The noise from compressed air piping is often louder than the noise from the compressor itself and its power source. Noise in pipes may come from mechanically transmitted vibrations, in addition to vibrations transmitted by compressed air. Therefore, it is important to install vibration isolators, and it may even be necessary to wrap sections of ductwork with sound-absorbing materials plus sealed insulating coverings.
2. How to reduce noise?
Reducing all noise generated by a compressore d'aria a vite fisso unit can be reduced through five different methods, namely sound insulation, sound absorption, vibration isolation, vibration damping and sound source silencing. Sound isolation refers to placing a sound barrier between a sound source and a receiver. This means that only part of the sound is blocked, depending on the area of the sound barrier and its soundproofing properties. A large, heavy sound barrier will be more effective than a small, thin barrier. Sound absorption refers to the use of thin, porous sound-absorbing materials that are affixed to a sound barrier to surround sound sources. Thick sound-absorbing materials are more effective than thin ones, with typical minimum densities of open-cell polyurethane foam being around 30 kg/m3 and mineral wool being around 150 kg/m3. Vibration isolation is used to prevent vibrations from being transferred from one part of a structure to another. As a common problem, vibrations can be transmitted from the built-in machinery to the surrounding sound barrier or down to the floor. Steel springs, air springs, cork, plastic and rubber are all commonly used vibration isolation materials. The vibration isolation material and its size should be selected according to the vibration frequency and the stability requirements of the machine installation. Vibration damping refers to the use of a structure with an external damping surface composed of an elastic material with high hysteresis. When the damping surface used is thick enough, it effectively prevents the barrier wall from vibrating and therefore from emitting noise. Sound source silencing often affects the operating characteristics of the equipment. This approach has limited effectiveness, but from a cost perspective it is a viable solution.
3. What does the sound insulation cotton of SPARTA air compressor look like?
Spartan Compressore d'aria VSD adopts a fully covered sound-insulating cotton design and uses thick sound-absorbing materials.
As shown in the picture:
