I. Atlas Copco Main Functions
Atlas Copco Reduce noise sources: During the operation of the air compressor, factors such as intake, exhaust, and mechanical vibration will generate high-frequency noises (usually ranging from 80 to 120 decibels). The muffler attenuates the noise through acoustic principles (such as absorption, sound insulation, damping, etc.) to meet environmental protection and occupational health standards (generally requiring ≤ 85 decibels).
Protect equipment and personnel: Reduce the damage to the operators' hearing caused by noise, and also lower the impact of noise vibration on surrounding equipment.
II. Common Types and Application Scenarios
Intake muffler
Installed at the air compressor intake, it is the most commonly used type, mainly reducing the airflow noise generated when air is sucked in.
It usually adopts resistive or resistive-impedance composite structures, allowing air to flow smoothly while effectively blocking high-frequency noises.
Exhaust muffler
Used at the air compressor exhaust port or the discharge port of the storage tank, it handles the blasting noise generated when compressed air is rapidly discharged.
It is usually designed as a porous diffusion type or expansion interference type to reduce the noise generated by air flow impact.
Pipe muffler
Installed on the gas transmission pipeline of the air compressor to reduce the noise transmission during gas flow, turbulence, or valve opening and closing within the pipeline.
The whole machine noise reduction cover (muffler box)
For small air compressors, wrap the entire machine in a cover with sound-absorbing materials to achieve all-round noise reduction, suitable for environments with extremely high noise requirements.
III. Purchase and Installation Tips
Compatibility: Select a muffler that matches the air compressor model, intake/exhaust diameter, working pressure, etc., to avoid affecting the noise reduction effect or the efficiency of the air compressor due to size mismatch.
Noise reduction efficiency: Check the noise reduction amount (usually labeled as 20-40 decibels) and preferentially choose products that have passed acoustic certification.
Durability of materials:It is preferable to choose materials that are resistant to corrosion and high temperatures, such as stainless steel and high-quality carbon steel. Especially in environments with moisture or oil mist in compressed air, these materials can significantly extend the service life.
Maintenance convenience： Some mufflers require regular cleaning or replacement of internal sound-absorbing materials. Choose a simple structure and easy-to-remove style.
