机载离心式制冷压缩机设计及特性分析

开发制冷量等级为50 kW的超级小型化离心式制冷压缩机是发展新一代战斗机蒸发循环系统的关键技术.由于小流量特点,工业中使用的大型离心式制冷压缩机设计经验不能完全适用于小型离心式制冷压缩机设计及工作特性的预测.基于试验,提出相关设计方案,通过建立小流量离心式压缩机效率、压比等的特性计算方程,对所设计的压缩机进行性能预测,经试验数据验证,计算结果与试验数据较为接近.该研究结果可为国内发展机载蒸发循环用离心式制冷压缩机提供技术支持.

Airborne centrifugal refrigerating compressor design and characteristic analysis

A key technique which is critical to design vapor cycle system (VCS) of the new-generation high-performance fighter aircraft is to develop a super-mini compressor with 50kW cooling capacity. Due to the small air rate flowing through the mini compressor, the designing experience which was used for the massive flow-rate compressor mostly cannot be completely applied to the designing and prediction for the super mini centrifugal refrigeration compressor. In line with the experimental data, design scheme was proposed. The expressions to picture the characteristics of the compressor, such as efficiency and compression ratio, were developed. The analytical calculation results are approximation to the experimental measurements. All aforementioned studies can supply necessary technical support to the design, research and development of refrigeration compressor in VCS adopted in high-performance fighter aircrafts.