Thousands of hours per year of fan-driven air movement combined with electrostatic charges make computers veritable dust magnets. Is all that dust simply a nuisance or is it actually harmful?

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问题

超级用户读者Holy Sheet提出了一个关于灰尘和计算机硬件的问题：

During the last few days, my screen froze a couple of times. After opening the chassis I discovered plenty of dust beneath my mother board. I wonder if that can cause short circuits.

忽视弹簧清洁会损坏你的电脑吗？让我们调查一下。

答案

超级用户Daniel R.Hicks对此提供了一些保证和见解：

Dust is a problem from the standpoint of blocking fan vents, or, if deep enough, actually insulating parts, causing overheating, but unless it contains substantial amounts of corrosive or conductive material (in which case you shouldn’t be breathing it), it won’t damage the electrical components (beyond any overheating damage).

What could happen, in some circumstances, is condensation inside the box, mixing with dust and creating a conductive sludge. This would generally only occur if you bring the box in from an extremely cold environment (below 0C, roughly) into a humid indoor environment. The protection from this is to wrap the box tightly in plastic before bringing it indoors, and leave it wrapped for a couple of hours, while it has time to warm up.

其他投稿人EdH提供了一些现场经验来证实先前的评估：

No way. Unless it over heats. Trust me, I have cleaned server motherboards deployed in Afghanistan for months with inches of dust caked on, still running fine. And as long as you keep them cool, they will survive.

Now, optical drives. That’s a different story.

当你的硬件被灰尘覆盖的风险很小的时候，热是电脑永远的敌人，良好的清洁将有助于保持凉爽（并在这个过程中延长电脑的寿命）。

有关如何安全有效地清洁计算机和外围设备的详细信息，请参阅以下资源：

• 如何彻底清洁你的脏桌面电脑
• 为什么你不应该用吸尘器吸你的电脑
• 问读者：你的科技春季清洁程序是什么？
• 如何彻底清洁键盘（不损坏任何东西）

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