How to correctly distinguish the quality of the DC cooling fan?

When choosing a DC cooling fan, many manufacturers and suppliers don’t know how to choose a good DC cooling fan. They usually find a few manufacturers at random, and then get the samples back. After the test, it’s OK to transfer, and then choose the cheaper one. A manufacturer supplier uses this as a standard. In fact, the cooling fan needs not only to be able to rotate in one day, but also to maintain the cooling characteristics for several years or even decades, without damaging or fading, to be considered a good quality DC cooling fan? Wenling Tongchi Technology Professional The technician teaches you how to distinguish the quality of the DC cooling fan. u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e 　　 1. u003cbru003eLook at the current ------ the same speed, the same voltage, the same air volume. A DC cooling fan with a small current is better. Because the smaller the current, the smaller the fan loss, that is, the lower the power consumption. The main reason for the lower power consumption is: u003c1u003e. The product has strong magnetic permeability u003c2u003e. The motor enameled wire loss is good u003c3u003e. Copper The high content of D lubricant has high activity. u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e 　　 2. Listen to the noise ------ DC cooling fans with the same speed, the same voltage and the lower the noise are better, because the low noise is mainly related to the fan blades, bearings, oil products, assembly structure, etc. u003c1u003e The better the shape of the fan blade is designed, the greater the air volume and the lower the noise. This is a technical task and a test of the ability of the technicians. u003c2u003e The higher the accuracy of the bearing, the smaller the friction between it and the shaft core, the more accurate the size matching, and the lower the noise, which is greatly related to the material of the bearing. u003c3u003e The noise is low, It means that the friction is small, the life of the bearing and the shaft core will be longer, and the life of the DC fan will also be longer. u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e 　　3. Vibration measurement ------Fans of the same specification and speed, small vibration DC cooling fans are better, DC cooling fans are a high-speed running part, there must be vibration, no one The manufacturer can guarantee that there is no vibration. If a manufacturer tells you that their product does not vibrate, it is used to deceive ghosts. Don't believe it. The smaller the vibration, the better. The smaller the vibration, the smoother the fan will run. , The smaller the loss of the bearing and the shaft core, the less oil volatilization or the wear of the balls, and the longer the life span. u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e u003cbru003e 　　 The above are some ways to judge whether the DC cooling fan is good or bad. If you want to know more professional cooling fan knowledge, please pay attention to Wenling Tongchi Technology Co., Ltd., 'Tongchi is a brand supplier of Wenling XFS-FAN series cooling fans. Many miniature independent DC cooling fans and waterproof AC cooling fans have patents. For more cooling fan specifications and prices, please contact 0755-81483289'