How to control the noise of air compressor？

The control of air compressor noise mainly adopts three aspects: muffler, silencing tunnel and sound insulation technology:

Install the muffler

The main noise source is the intake and exhaust ports, and appropriate intake and exhaust mufflers should be selected. The frequency spectrum of air compressor intake noise presents low-frequency characteristics, and the intake muffler should use a resistant structure or an impedance composite structure based on individual and resistance. The exhaust air pressure of the air compressor is large and the air flow speed is high. A small hole muffler should be used at the air compressor exhaust port.

Set up silencing tunnel

The underground or semi-underground tunnel of the anechoic tunnel, the tunnel wall is made of bricks with good sound absorption. Connect the intake pipe of the air compressor to the muffler tunnel so that the air enters the air compressor through the muffler tunnel. The use of muffler tunnels can greatly reduce the intake noise of the air compressor, and the service life is longer than that of general mufflers.

Building a sound enclosure

After installing a muffler at the intake and exhaust ports of the air compressor or setting up a silencing tunnel, the airflow noise can be reduced to below 80db(a), but the mechanical noise and motor noise of the air compressor are still very high, so it should also be used in the air compressor. Install a sound insulation cover on the unit of the machine. Suspended space acoustic body: In the Foshan Linggefeng air compressor station, the tall and empty factory buildings have heavy reverberation. If the sound absorber is dispersed and suspended on the roof of the factory building, the noise of the factory building can be reduced by 3-10db(a), and the reverberation time can be reduced by 5-10s.

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