离心通风机蜗壳型线绘制方法的改进  

The Improvement in the Drawing Method for the Volute Shape of Centrifugal Fan

作　　者：叶增明[1] 朱婷婷[1] 

机构地区：[1]上海理工大学动力工程学院,上海市200093

出　　处：《风机技术》2008年第5期30-32,39,共4页Chinese Journal of Turbomachinery

摘　　要：针对离心式通风机的蜗壳内壁型线设计常用两种近似作图方法存在的问题,提出了一种更为合理的新近似作图法,新作图法很好地解决了4段圆弧间相接和相切的问题,并可分别按阿基米德螺旋线和对数螺旋线近似作图。Now equilateral -element method and inequilateral -element method are the two most common methods in designing the inner wall line of the volute in centrifugal fan. According the problems existed in the two kinds of methods,a new approximate drawing method which is more reasonable is pointed out in this paper. This method can solve the problem on the anastomosis and tangent of the four arcs. We can also apply this method either on the base of Archimedean and Spiral Equation or Logarithm Spiral Equation.

关 键 词：离心式通风机 蜗壳型线 近似作图法 

分 类 号：TH432[机械工程—机械制造及自动化]