Taiwan fan brand takes you to bypass the CPU cooling fan trap.Heater Fan Production

　　The focus of the traditional intelligent electronic product industry is the core hardware. As long as the hardware performance is good and the software is excellent, the performance of electronic products will be high. However, the power of electronic products has gradually increased with the development of the times, and a large number of products have begun to appear the so-called "power wall". After the power density of the product reaches a certain level, the temperature control problem becomes the killer of the product performance improvement. Next, Taiwan fan brands will introduce the selection traps of small CPU cooling fans in detail.

　　The heat dissipation design of the CPU small cooling fan has existed since the earliest desktop period. At the beginning, natural heat dissipation was used, and it gradually transitioned to forced air cooling. Now there are designs of water cooling and even liquid nitrogen cooling. Although it has been developed for many years, some professional designers are sometimes misled due to the very fancy marketing. This article discusses three very common misconceptions about fan selection in thermal design:

　　Myth 1: The bigger the fan, the better the heat dissipation

　　Many people believe that the size of the small CPU cooling fan directly determines the cooling performance of the system. It is true that the fan plays a pivotal role in the design of the cooling solution, but the size of the fan cannot directly determine the overall performance of the solution. Under normal circumstances, a large-sized fan may obtain a larger air volume at the same speed, but under the condition of obtaining the same air volume, a large-sized fan can obtain a better mute effect than a small-sized fan. However, with the improvement of the integration of electronic products, the size of the space left to thermal design engineers is becoming smaller (this is an inevitable trend, thermal design engineers should rather quickly find ways to improve the level of thermal design instead of worrying). Large size fans will take up a lot of heat dissipation design space, making the design of heat sinks difficult.

　　Myth 2: Ball fans are stronger than hydraulic fans

　　This is the mantra of many fan engineers educating non-professionals. But it is wrong, at least one-sided. For the life of the CPU small cooling fan, the biggest influence is the fan bearing. There are generally two designs of fans on the market today, namely ball and oil seal. Ball fans are relatively old, and the common sense of changing sliding friction to rolling friction has been discussed in junior high school physics, so I won’t introduce it too much. The design of the oil seal is not understood by many people. The representative form of the oil seal is the TC oil seal, which is a double-lip oil seal with a self-tightening spring completely covered by rubber. "Fu bearing", which makes it fully enclosed and has better lubricity, so that the life of the bearing can be extended.

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