The noise of the screw air compressor mainly comes from the air inlet and outlet, the body itself, the mechanism design, and the motor. The noise caused by these four aspects can be dealt with to reduce the noise of the air compressor.
The inlet and outlet of the air compressor can be equipped with corresponding mufflers to appropriately reduce noise. The body and shell can increase the sound insulation cover (such as the combination of sheet metal cover and sound-absorbing cotton).
The mechanical noise and motor noise of the air compressor can also be reduced with the following methods:
- Shock-absorbing base: Put a layer of soft and thick material under the base of the air compressor to reduce vibration and noise.
- Check the fan blades: Damaged fan blades or slight collisions/friction with the fan cover can cause abnormal noise.
- Lubrication: Increase or replace the lubricating oil to reduce direct friction inside the machine.
- Soft start: Avoid frequent loading/unloading operations to reduce noise, especially compared to standard frequency operation.
- Rational structural design: Use connected inlet and outlet hoses and design the entire machine to minimize vibration sources.
- Motor improvements: Replace or select oil-cooled motors; use permanent magnet variable frequency motors with independent control of fan speed for quieter performance.
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