How to reduce noise of electronic components cooling fan.mini fans bulk portable

　　When the cooling fan of electronic components is running, certain noise will inevitably occur. These noises not only affect the quietness and order of the production environment, but also may reflect some faults and defects of the cooling fan of electronic components. Here we will take a detailed look at the methods of reducing the noise of the cooling fan of electronic components, in order to effectively reduce the noise of the cooling fan of electronic components.

　　The noise problem of the cooling fan of electronic components is a relatively common problem. Some of them are the quality problems of the cooling fans of electronic components, and some are the installation problems of cooling fans of electronic components. Therefore, the correct installation of cooling fans of electronic components is also very important. important

　　1. The installation method of clamping the frame of the cooling fan of electronic components up and down is easy to produce resonance and amplify the sound due to the vibration of the cooling fan of electronic components during operation, and it is impossible for the cooling fan of electronic components to run at high speed without vibration.

　　2. Using the flip-chip method, the fan blade faces down and absorbs heat from bottom to top. The oil-containing electronic component cooling fan may exceed the height of the outer frame due to the gravity of the fan blade itself, and encounter the heat dissipation below. Pieces, produce noise (change to double ball bearings can be a good solution)

　　3. Improper installation of locking screws, the first screw is too hard, the lock is very tight, the second parallel screw is also locked tightly, and then the two screws on the opposite side are locked, which will cause the fan frame to deform. If it becomes twisted, the fan blade may hit the outer frame wall to produce a scratching sound. The correct way to do it is to lock the first screw down, just tighten it, don't lock it out of shape, then lock the diagonal screws when finished, and then lock another set of diagonal screws when finished.

　　Customers who have ultra-thin electronic components cooling fans below 10mm believe that they have encountered electronic components cooling fans more or less after using them for a period of time, and then there will be noises and abnormal sounds in different ranges. Very quiet, the noise gets louder and grunts louder over time. Why does this happen to the cooling fan of electronic components?

　　Ultra-thin electronic components cooling fans such as 3007, the thickness is 7mm, 90% of the manufacturers supply oil-impregnated bearings or hydraulic structures. The material of this bearing is made of copper powder, and the precision is poor. However, since there is lubricating grease between the bearing and the shaft core, the shaft core will not directly touch the bearing to produce grunting noise when it starts running. In the case of using electronic components cooling fans, high temperature, dusty environment, high temperature will accelerate the volatilization of oil, the oil dries, and the dust is sucked into the bearing, and the noise will come out at this time, there is no way to avoid it

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