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The function of fan muffler is introduced

Release time: 2022-10-26

Fan silencer series products are a kind of impedance silencer. When sound waves move in porous sound absorbing materials, molecules in the air will cause the holes or gaps of the material to vibrate. Due to friction and the viscous resistance of the holes, sound energy is converted into heat energy to make part of the sound energy, thus reducing the sound.

According to the spectrum characteristic data obtained from the actual testing of noise sources in the field of operation of various industrial fans, the main basis for designing sound absorbers and fluid channels in which spectrum ranges is determined, and narrow rectangular channels with large sound absorbers are used to enhance the absorption effect. In addition, when the noise source of the fan is at the maximum noise level, its spectrum value is often more than one, and for different spectrum bands, the noise reduction requirements are not the same.

Fan muffler are sound impedance flow pattern, the sound-absorbing anechoic effect to the high and intermediate frequency noise resistance type structure and dead drop the sound effect to the medium and low frequency noise of the resistance type structure, at the same time using the high frequency and low frequency resistance type channel two sound-absorbing anechoic area, in order to maximize the broadening of dead band, in order to achieve good noise elimination noise reduction effect.

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