目前离心式制冷机趋向高速化且叶轮采用无键的大过盈量配合来取代小过盈量配合的加键方法。这样在叶轮内会产生相当大的应力,因此研究开发了高强度的实心叶轮。本文详细介绍了BF型离心式制冷机实心叶轮的有限元计算方法及其结果。计算结果表明,这种采用三螺钉连接的实心叶轮具有高强度、无应力集中等优点,是值得推广的一种新结构。 At present, centrifugal chillers tend to speed up and impellers use a keyless overdimensioning to replace the small overprinting. This produces considerable stress in the impeller, so a solid impeller with high strength has been researched and developed. This paper introduces the finite element method and its result of BF centrifugal chiller solid impeller. The calculation results show that this kind of solid impeller with three screws connection has the advantages of high strength and no stress concentration, which is worth to promote a new structure.