How to reduce the noise of a clip-on fan

　　There is no way to overcome the noise of a small clip-type fan. The motor is small and the fan page is long, so one is that the motor has a large workload, and the other is that the speed is high, and the fan page is easy to deform, which will generate noise.

　　clear noise

　　1. Lubricate the bearing The most important part of the fan transport is the bearing. After a long time, the lack of lubricating oil will cause noise when rotating at high speed. Therefore, we only need to put a few drops of lube on the fan bearing, if not using a sewing machine instead. But be careful not to use edible oil instead, because its particles are relatively large and it is easy to cause damage to the bearing.

　　2. The vibration noise of the fixed fan blade is also an important part of the fan noise, because the looseness of the blade on the bearing and the wear of the bearing cause the gap to become larger, so it is only necessary to remove the split fan, and tighten the screws, so that it is firmly fixed After that, it won't vibrate anymore.

　　3. Grinding the fan blades In addition, use a cooling fan with poor quality. Due to the defects in the craftsmanship, the center of gravity of the fan blade may not be on the axis, forming an "eccentric". The "eccentricity" phenomenon will become more and more serious, which will not only generate noise, but may also damage the CPU in severe cases. In this regard, you can remove the total, and then hang it in the center with a thin wire. After it is stationary, see which direction it sinks, and lightly grind the sinking end on the grinding wheel for a few times, and then test it. Wait until the fan can be in a horizontal position before installing it.

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