1.引言在空调和通风装置中经常使用离心式通风机,但有关其噪声降低方法的研究报告却很少。而且更奇怪的是,许多有成效的方法一直未得到商业上的应用,尽管有些改进结构并不影响风机的空气动力性能,造价也不太昂贵。本文汇总近15年来已发表的研究报告以有助于工程师设计低噪声通风机。 1. Introduction Centrifugal fans are frequently used in air conditioning and ventilation systems, but few studies have reported on their methods of noise reduction. And even more surprisingly, many productive methods have not been commercially used, although some of the improvements do not affect the aerodynamic performance of the wind turbine and are less expensive. This article summarizes published research reports over the past 15 years to help engineers design low-noise ventilators.