风机叶轮的子午面形状是决定其内部流场的主要因素之一,为此,本文提出了离心式和斜流式叶轮子午面型线的通用几何关系式和计算方法.该法是通风机的计算机辅助设计方法中的一部分,它既适用于对已有风机的验算,又能用于风机叶轮子午面轮廊的设计. The meridional shape of the fan impeller is one of the main factors that determine the internal flow field. Therefore, this paper presents the general geometrical relation and calculation method of the centrifugal and impeller type meridian profile. Part of a computer-aided design approach that applies both to the checking of an existing blower and to the design of the wind turbine meridian.