空间站用离心风机降噪技术研究与验证  

Noise Reduction Research and Verification for Centrifugal Fans in the Space Station

作　　者：朱志能 崔浪浪 吴和远 

机构地区：[1]贵州航天林泉电机有限公司 [2]国家精密微特电机工程技术研究中心

出　　处：《风机技术》2016年第5期44-48,共5页Chinese Journal of Turbomachinery

摘　　要：空间站需长期驻人,安静的环境对航天员的健康和安全尤为重要。因此有必要对离心风机的降噪技术开展研究。通过对离心风机气动噪声的产生及传播机理的研究,明确了离心风机的主要气动噪声源在蜗壳上。基于上述理论,针对空间站内某型号风机进行降噪设计,在其蜗壳内壁增加穿孔板和消音棉,并在进风口增加消声器,最终经过试验验证了风机噪声满足舱内稳态噪声医学要求。Astronauts usually spend a long term stay in the space station. A quiet environment is particularly important for the astronauts＇ health and safety. Therefore, it is necessary to reduce centrifugal fan noise. The study of the generation and propagation of aerodynamic noise in centrifugal fans shows the main aerodynamic noise source of centrifugal fans to be located in the volute. Theoretical noise reduction technology is used to design a certain type centrifugal fan in the space station. For the inner wall of the volute a perforated plate muffler and cotton, and at the inlet a silencer is used. The validation results meet the medical requirements of steady noise in the space station.

关 键 词：离心风机 气动噪声 舱内 降噪 

分 类 号：TH452[机械工程—机械制造及自动化] TK05[动力工程及工程热物理]