A Brief Discussion on How to Choose a Cooling Fan—Jiangshan Lai
Category:
Industry Trends
Release time:
2021-04-13
As the level of machine automation increases, DC fans have found widespread application in our daily lives, which has also accelerated... Cooling fan The main reasons behind the industry’s accelerated development. How can you choose a good DC fan from among so many suppliers?
1. Bearing Selection: Generally speaking, the bearings used in cooling fans fall into two categories: one is ball bearings, collectively referred to as ball bearings; the other is oil-lubricated bearings, known as oil-bearing bearings. The key difference between the two is that ball bearings have a longer service life and produce less noise, but they are considerably more expensive. Oil-bearing bearings have a service life that’s about one-quarter shorter than ball bearings; after just over a year of use, they may start to generate some noise, but they are much cheaper.
2. Choose based on appearance: From the outside, the overall structure should be thicker, made of high-quality material, with a pure and vibrant color, and free of burrs along the edges of the frame and blades. Pay attention to the thickness of the fan blades—blades that are too thin are prone to breaking, and when you gently pinch the outer frame with your hand, it shouldn’t deform significantly.
3. Listen to the sound of the fan. At excessively high speeds, you might hear electromagnetic noise. If there are other unusual sounds, the fan’s quality isn’t very good. If a DC fan doesn’t spin at a very high speed—for example, a 7-centimeter fan that spins no faster than 3,500 RPM—a large volume of airflow during testing generally indicates average fan quality.
4. Check the specifications on the outer packaging: The following two parameters provide reference voltages: 5V, 12V, 24V, and 48V. The operating current is typically less than 250 milliamps; the higher the rotational speed, the lower the operating current, which helps save energy.
The above is the reference advice provided by Shenzhen Jiangshanlai Electronics, a manufacturer of cooling fans. For more detailed information about cooling fans, please feel free to contact us!
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Next: Have you noticed that the blades of a cooling fan are an odd number? — Jiangshan Lai
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