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模块电源风扇旋涡对散热的影响

2020-08-20

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对比两种分析结果,我们发现在该模型的分析过程中,风扇旋转方向对模块电源内部的流场及温度场的分布都有非常大的影响。从流场方面来看,由于该模型的整流桥部分尺寸比较低,PFC散热器部分又比较高,在此种情况下风扇的旋转方向对流场有十分显著的影响。在风扇为顺时针方向旋转时,整流桥散热器周围的漩涡很小,流场比较通畅,有利于整流桥散热器的散热。然而在风扇为逆时针方向旋转时,整流桥散热器周围的漩涡很多,不利于整流桥散热器的散热。这些差异也可以通过模块电源截面温度场的分布得到进一步的证实。

 

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