防尘的散热风扇,厂家一般如何做的?
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防尘的散热风扇,厂家一般如何做的?
作者: 奥博特    发表时间:2019/7/17 17:08:29    浏览量:1000
散热风扇本身的特点,跟其它产品不一样,散热风扇是主动搅动空气,加速空气流动,所以,同时也吸入灰尘。吸入灰尘主要是两个方面,一个是吸入轴承内,二是吸入转子与定子内,吸入灰尘对散热风扇或多或少是有影响的,常见的做法一般是从如下两个方面入手


1.设计时,外框装马达的地方,加高,让马达沉下去,减小定子与转子间的间距,减少灰尘进入

2.采用双滚珠轴承,滚珠有一定的防尘能力,轴承不易受严重的干扰

除了以上这两个方面从散热风扇自身进行防尘保护外,在风扇上加防尘网也是一种非常有效的方式。因为带防尘设计的散热风扇用量少,多数厂家都没有此类模具,所以,在不开模的情况下,加防尘网是比较可取的。

 
 
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