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微波炉有噪音的原因以及解决办法

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微波炉有噪音的原因:

从微波炉的工作原来我们可以知道,微波炉将电能通过磁控管产生微波,微波再通过共振加热水分子从而给食物加热。

微波炉的磁控管的效率只有70%左右,其它30%的能量都会变成热量,所以微波炉内会有风扇帮助散热,这和CPU风扇类似。30%的能量到底是多少呢,我们可以估算一下,如果微波炉的输入功率为1300w,那么就有大约390w的热生成功率。我们用的台式机的电源才300w,390w要比整个台式机电脑的功耗还要多,可以想象为什么需要风扇来散热了。

当风扇的振动频率和微波炉外壳的固有频率接近的时候,外壳也将会产生振动,风扇的振动和外壳的振动都会使得微波炉在工作的时候会有噪音,这就是微波炉噪音的来源。

解决微波炉噪音的方法:

知道微波炉噪音的来源后,我们就可以对症下药了。

如果是微波炉风扇的声音,我们可以通过更换一个新的风扇来减小噪音。

如果是微波炉外壳振动引起的噪音,可以通过在微波炉上面压一些相对重的东西,或更改微波炉外壳的质量,如用锉刀在微波炉散热出口处稍微锉去一些,达到改变微波炉外壳固有频率的目的,从而降低微波炉的噪音。 -- EOF-TRUEVUE --