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介绍并补充完善了１种蜗壳型线二维逆命题设计方法，该方法能够按照蜗壳进口圆周上流动参数的不同分布形式，设计出不同的蜗壳型线．对２台性能优良的离心风机蜗壳型线进行了拟合计算，对设计中蜗壳进口流动参数理论分布形式的影响规律做了初步探讨，提出了一些新的思想和观点
This paper introduces and complements and completes the design method of a kind of two-dimensional inverse convolution of volute profile line. The method can design different volute profiles according to the different distribution of flow parameters on the circumference of the volute. The fitting of two high performance centrifugal fan volute profiles was carried out, and the influencing rules of the theoretical distribution pattern of the inlet flow parameters were analyzed. Some new ideas and opinions were put forward