How to solve the noise problem of the cooling fan?

The noise from the cooling fan has always been a headache for us. It not only affects the quality of our products, but also brings other work troubles. So, how is the noise from the cooling fan generated? How can we reduce the noise of the cooling fan? Jiance cooling fan manufacturer today teaches you how to cleverly reduce the noise of the cooling fan.
Analysis of the causes of noise generation:
Is the firmware of the fan secure?
If the fasteners cannot be tightly integrated with the equipment, the vibration generated during high-speed operation of the fan will cause repeated collisions between the fixed plate and the fan, resulting in significant noise.
2. Is there a large amount of dust in the fan operating environment?
If dust seeps into the shaft of the fan, it will cause the noise to increase due to the increased friction coefficient when the fan blades rotate.
3. Is the temperature of the fan operating environment higher than 75 degrees?
If the original purchase was for a fan with oil bearings, and the ambient temperature of the fan was above 75 degrees Celsius for a long time, within three months, the oil in the fan bearings would be dried and evaporated. Due to the loss of lubrication, the friction coefficient would increase, and the noise of the fan would be very loud, and the fan blades would even stop rotating.
Jamicon cooling fan
To solve the noise problem of fans, start from the following aspects:
1. Add plastic or rubber washers between the fan and the fixing plate to ensure a tight connection and provide a cushioning effect on the vibration during fan operation.
2. Dust issue: Expose the fan to the outside of the box and add a dust screen. There are currently two main types of dust screens to choose from: plastic three in one dust screen and metal dust screen. It is recommended to use a metal dust net, which can prevent dust and provide strong protection against accidental insertion of foreign objects, especially when the temperature is high, the metal dust net will not deform. All dust screens must be regularly cleaned of dust and foreign objects to avoid blocking the air outlet or inlet of the fan.
3. High temperature problem: Generally speaking, oil-bearing fans are used for operating temperatures ranging from 0 to 75 degrees Celsius; Choose a dual ball bearing fan between 75-130 degrees or minus 30 degrees to 0 degrees. Generally speaking, oil-containing fans have lower noise and are cheaper than double ball fans. And the double ball fan has a larger air volume and longer service life than the oil fan.
When purchasing a cooling fan, we must try to listen to the noise of the cooling fan. If it is too loud, we suggest that you do not purchase it. Of course, the noise emitted by the cooling fan may not be a problem with the quality of the fan, but it may also be due to poor lubrication of the fan shaft or incorrect installation of the cooling fan. If this is the case, we can reposition the fan or add some lubricant to the fan shaft, To ensure good lubrication effect.
When purchasing a cooling fan, starting from choosing a good brand, the noise of a good brand fan will not be a big problem. Even if there is one, the brand's cooling fan manufacturer will have after-sales support, so there is no need to worry about the noise being unable to solve it.