DIY爱好者发明大炮“安静版本”

我最近收到住在北京Bill的邮件。他用DIY大炮减少家里的颗粒污染。

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但是他像我一样想降低大炮的噪音。

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所以Bill用了DIY精神来设计一个“静音版本”。他用塑料方块制造了一个箱子,将噪音挡在里面。

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箱子前后端有开口,帮助通风,虽然我猜这样做可能会降低几个百分点的净化效果。为进一步降低噪音,他在里面还用了被子盖上风扇。

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结果噪音降低6 dB!这区别多大?如果你已经有大炮,低档噪音是52 dB。作为比较,Bill大炮的高档噪音比这个低2 dB。确实挺安静的!

如果你对用Bill的设计感兴趣,我建议关注两点:

  1. 这个设计应该会有点减少空气的流通性。我猜总体效果会降低至少几个百分点,但是要做比较测试后才能确知。
  2. 要注意避免风机超热。设计完了之后,先开高档看看温度。

支持Bill的作业!

 

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