变频压缩机低频周期性噪声的分析

随着控制技术的发展,应用于空调系统的滚动转子压缩机的运行频率越来越低,甚至能达到1Hz。但随着运行频率降低至30Hz以下时,压缩机会出现周期与压缩机运行频率相同的嗒嗒声,运行频率越低,周期性嗒嗒声越明显。本文采用滤波、时频分析及撞击试验等手段详细分析了周期性嗒嗒声产生的根源,并提出改进措施,有效改善低频哒哒声。

Periodic Noise of Inverter Controlled Rotary Compressor

With the development of control technology,the operation frequency of compressor in air conditioner system is lower and lower,extremely to 1 Hz. A periodic noise appears when the compressor operating below 30 Hz. The operating speed lower,the periodic noise become more obvious. In this paper,research is taken on the reason of this periodic noise with filter,time-frequency technology and impact experiment. What's more,the structure is optimized to reduce the periodic noise.