Why do cooling fans need to have the function of resisting environmental erosion (Part 1)

The core reason why a cooling fan must resist environmental erosion is the corrosive factors such as water vapor, dust, and chemical media in the environment, which can directly damage the structure and operational performance of the fan, thereby affecting the cooling efficiency and operational safety of its adapted equipment, and even causing chain failures. The specific reasons can be explained in detail from the following aspects:

1. Ensure stable core heat dissipation function and avoid equipment overheating

The core mission of a cooling fan is to remove heat through airflow circulation, and environmental erosion directly weakens this core capability. For example, dust accumulation on the surface of the fan blades and the inlet and outlet ports can increase wind resistance, damage the aerodynamic structure of the fan blades, and significantly reduce the air volume; If the fan blades are damaged or deformed due to corrosion, or the bearings are corroded and stuck, it will cause the speed to decrease or even stop, and the heat dissipation effect will be greatly reduced. Once the heat dissipation of the electronic devices, industrial machinery, etc. that it is adapted to is insufficient, the temperature of the core components (such as chips, motor windings) will soar, which will cause the equipment to reduce frequency, slow response, and in severe cases, directly trigger overheating protection shutdown.

2. Extend the lifespan of the fan itself and reduce replacement costs

The key components of the fan, such as the frame, blades, bearings, and motor, are prone to irreversible damage when exposed to corrosive environments for a long time. For example, humid environments can cause metal frames and bearings to rust, leading to increased wear and tear during fan operation, increased noise, and a sudden drop in lifespan from tens of thousands of hours to thousands of hours; The acid-base mist in the chemical environment can cause ordinary plastic fan blades to become brittle and crack, and metal parts to corrode and puncture; Outdoor ultraviolet radiation accelerates the aging of plastics, causing them to lose their toughness. If the fan is frequently damaged due to erosion and needs to be replaced repeatedly, it will significantly increase the maintenance and accessory costs of the equipment.