离心式压气机工作叶轮出口处气流速度,沿周向及轴向分布是不均匀的,不但降低了叶轮本身的效率,而且还会增加下游无叶扩压器的附加损失。本文介绍的后掠式压气机采用了前倾后弯的叶片,改善了流场的不均匀性,使压气机具有较高的级效率和较宽的等效范围,而且使喘振线偏向小流量。 Centrifugal compressor working impeller exit airflow velocity, along the circumferential and axial distribution is not uniform, not only reduces the efficiency of the impeller itself, but also increase the downstream vaneless diffuser additional loss. The swept-back compressor presented in this paper uses forward-backward curved blades to improve the flow field inhomogeneity and to provide a higher stage efficiency and wider equivalent range for the compressor and to bias the surge line to a small extent flow.