1. Function and Working Principle
Core Function: By rotating at high speed, it drives the airflow and discharges the heat generated during the operation of the air compressor (such as residual heat from the compression process, heat from the motor operation, etc.) into the environment to prevent the equipment from experiencing efficiency decline or failure due to overheating.
Matching System: The fan blades usually work in conjunction with the cooler (oil-cooled, air-cooled). The design of the fan blades for different types of air compressors (such as oil-injected screw compressors, oil-free compressors, etc.) will adjust the size, blade angle, and rotational speed according to the heat dissipation requirements.
2. Common Types and Characteristics
Material: Mostly made of high-strength engineering plastics (such as PA6 + glass fiber) or metals (aluminum alloy), featuring lightweight, heat resistance, and corrosion resistance, which can adapt to the high-temperature environment during the operation of the air compressor.
Structure: According to the airflow design, the blade shapes are mostly arc-shaped or twisted to improve the heat dissipation efficiency; some models have guards to prevent foreign objects from entering.
Drive Method: Usually driven directly by the motor or through belt transmission, with the rotational speed linked to the load of the air compressor (some intelligent models can automatically adjust the rotational speed according to the temperature).
3. Faults and Maintenance Tips
Common Problems:
Blade fracture or deformation: Mostly caused by foreign object impact, improper installation, or material aging, which can lead to abnormal noise, increased vibration, and even damage to the cooler.
Abnormal rotational speed: May be due to motor failure, loose/blocked belt, or control module issues, resulting in insufficient heat dissipation and the equipment triggering a high-temperature alarm.
Accumulated dust blockage: After long-term operation, the blade surface accumulates dust, which reduces the air volume and affects the heat dissipation effect, especially in environments with a lot of dust, more attention is needed.
Maintenance Suggestions:
Regular Inspection: Every 1000 hours of operation or as per the manual requirements, check if the blades are intact, if there are any cracks, and if the connection parts are tightened.
Cleaning and Maintenance: Use compressed air or soft cloth to clean the dust on the blades and guards to avoid accumulation that affects heat dissipation.
Timely Replacement: If the blades are damaged, deformed, or out of balance, they should be replaced immediately (it is recommended to use original Atlas Copco parts to ensure size and dynamic balance match).
Installation Attention: When replacing, calibrate the gap between the fan and the cooler to ensure smooth airflow, and check the integrity of the guard to prevent safety hazards.
