Analysis of Common Issues in Cooling Fans

1. Design-related causes:

The design exhibits deficiencies, as the compatibility and dynamic behavior of key components were insufficiently addressed during the design phase, leading to vibration and noise during equipment operation. The structural layout is suboptimal, and material selection is inappropriate, resulting in stress concentration and an increased risk of cracking in the machine housing. Furthermore, certain components are fabricated from materials with inadequate mechanical strength, failing to comply with established technical standards and thereby presenting potential safety hazards during operational use.

2. Operational causes:

Significant deviations of equipment process parameters from design specifications may result in the Cooling Fan operating continuously under overspeed and overload conditions, or conversely, in low-speed and low-load regimes, thereby preventing it from achieving optimal performance. Operation near or within the critical speed range can induce severe vibration. Additionally, inadequate lubrication or insufficient cooling compromises the operational stability of the fan system. Furthermore, improper procedures during startup, shutdown, or speed ramping may lead to non-uniform thermal expansion due to insufficient temperature rise, or cause localized overheating that induces material annealing, resulting in reduced mechanical strength and degradation of original mechanical properties.

3. Maintenance-related causes:

Improper mechanical assembly, component misalignment, or inadequate shaft system alignment may result in excessive preloading. Additionally, incorrect rotor positioning or non-compliance with established maintenance procedures can compromise the original dimensional and functional fit of equipment components, thereby degrading operational accuracy and long-term reliability.

4. Causes of equipment deterioration:

Long-term operation of the equipment leads to fatigue damage of key components such as bearings; local damage to the fan blades causes dynamic imbalance; parts suffer local wear under impact loads, or their performance degrades and even fails due to aging, overload and other factors.

When the cooling fan malfunctions, do not disassemble it or perform non-professional operations on your own. Contact the technical personnel of the qualified cooling fan manufacturer in time to obtain timely and effective technical support to ensure that the problem is handled quickly and safely. Shenzhen Fuqingda Electronic Technology Co., Ltd. has over 20 years of experience in the research and development and production of cooling fans and can provide customers with professional and reliable cooling solutions. Welcome to inquire and cooperate.