Our silencers for fans, fan mufflers, and centrifugal fan mufflers all adopt the noise reduction principle of resistive absorption with good performance on medium and high-frequency broadband characteristics, the noise reduction principle of reactive absorption with good performance on low and medium frequencies and pulsating characteristics, as well as micro-perforated silencers and impedance composite silencers.
The silencers for fans are categorized into several major types: centrifugal fan silencers, Roots blower silencers, compressor silencers, axial flow fan silencers, and more.
A resistive silencer is an absorptive type of silencer, which is generally categorized into straight-tube, sheet, corrugated plate, honeycomb, acoustic flow, labyrinth, and elbow styles, depending on the structure of the airflow channel. It works by converting sound energy into heat and dissipating it through the friction and viscosity resistance of sound waves propagating through porous sound-absorbing materials, thereby achieving the purpose of noise reduction. It is one of the most widely used types of silencers among all.
The Resistance-Damping Silencer differs from the Resistive Damping Silencer in its noise reduction principle. It does not directly absorb sound energy but utilizes the abrupt interfaces or auxiliary resonant cavities on the pipeline to cause certain frequencies of sound waves propagating along the pipeline to reflect and interfere at the interfaces, thereby achieving the purpose of noise reduction. It is categorized into expansion chamber-type damping silencers and resonant-type damping silencers.
