How to control the noise pollution of the silent oilless air compressor
Air compressor noise control muffler, muffler trenches and sound insulation technology three aspects:
1, the installation of air compressor muffler:
The major source of noise is the intake and exhaust ports, should use the appropriate intake and exhaust muffler. Compressor intake noise spectrum was the low frequency characteristics of the intake muffler should be used in the resistant structure, or a resistance-dominated impedance composite structure. The exhaust gas pressure of the air compressor, air velocity, should be used in air compressor exhaust port holes muffler.
The major source of noise is the intake and exhaust ports, should use the appropriate intake and exhaust muffler. Compressor intake noise spectrum was the low frequency characteristics of the intake muffler should be used in the resistant structure, or a resistance-dominated impedance composite structure. The exhaust gas pressure of the air compressor, air velocity, should be used in air compressor exhaust port holes muffler.
2, set the air compressor muffler trenches:
Muffler trenches of underground or semi-underground tunnel, tunnel wall into a good acoustic properties of brick. The air compressor intake manifold and muffler the trenches connected, so that the air entering the air compressor through the muffler tunnel. The muffler Hang air compressor intake noise can be greatly reduced, the service life is longer than normal muffler.
Muffler trenches of underground or semi-underground tunnel, tunnel wall into a good acoustic properties of brick. The air compressor intake manifold and muffler the trenches connected, so that the air entering the air compressor through the muffler tunnel. The muffler Hang air compressor intake noise can be greatly reduced, the service life is longer than normal muffler.
3 acoustic enclosures:
In the intake and exhaust ports of the air compressor is installed muffler or after setting silencer trenches, flow noise can be reduced to below 80dB (a), but the mechanical noise of the air compressor and motor noise is still high, so should pneumatic acoustic enclosures installed on the machine unit. 4 hanging space absorber: air compressor station of one of our customers, a tall empty plant reverb heavy. In plant roof dispersed suspension the absorber plant noise can be reduced 3-10db (a), the reverberation time is reduced by 5-10s.
In the intake and exhaust ports of the air compressor is installed muffler or after setting silencer trenches, flow noise can be reduced to below 80dB (a), but the mechanical noise of the air compressor and motor noise is still high, so should pneumatic acoustic enclosures installed on the machine unit. 4 hanging space absorber: air compressor station of one of our customers, a tall empty plant reverb heavy. In plant roof dispersed suspension the absorber plant noise can be reduced 3-10db (a), the reverberation time is reduced by 5-10s.
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