流体机械

2007, No.423(09) 1-4+37

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前向离心风机采用不等距叶片叶轮降噪的试验研究
Experimental Study of Noise Reduction for a Centrifugal Fan with Non-isometric Forward-swept Blade Impeller

马健峰;袁民建;毛义军;祁大同;邱长安;
MA Jian-feng,YUAN Min-jian,MAO Yi-jun,QI Da-tong,QIU Chang-an(Xi'an Jiaotong University,Xi'an 710049,China)

摘要(Abstract):

为了降低T9-19No.4A前向离心风机的噪声,针对该风机设计了两个不同叶片间距的不等距叶片叶轮,并对原风机和两个改进后的风机进行了试验,对采用不等距叶片叶轮降低前向离心风机噪声进行了初步探索。试验结果和分析可供同行进行同类研究时参考。
In order to reduce the noise level of the T9-19No.4A centrifugal fan,whose impeller has equidistant forward-swept blades,two new impellers with different blade spacing were designed and experimental study was carried out.The fan performance and sound pressure level and spectrum are measured respectively when the fan is matched with the original impeller or with the two redesigned impellers.The test results were discussed in detail and the method of noise reduction for a centrifugal fan with non-isometric forward-swept blade impeller was analyzed elementarily,which can be for reference.

关键词(KeyWords): 离心风机;非等距叶片叶轮;降噪
centrifugal fan;non-isometric blade impeller;noise reduction

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作者(Author): 马健峰;袁民建;毛义军;祁大同;邱长安;
MA Jian-feng,YUAN Min-jian,MAO Yi-jun,QI Da-tong,QIU Chang-an(Xi'an Jiaotong University,Xi'an 710049,China)

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