一种单转子压缩机控制方案应用研究

Research on the Application of a Single-rotor Compressor Control Scheme

单转子压缩机具有高能效、低泄漏率、小型化等优势,在冷冻领域上应用需求将不断增加。但单转子压机由于固有属性原因,在低频段抖动较大,尤其在大负载工况下,振动加剧。为了解决此问题,从压缩机单体振动、室外机振动、回气管路振动、室外机噪音效果为衡量指标,以2P单转子压缩机为基准,开发了一种低频振动抑制控制算法和制冷系统管路设计方案。实验结果表明,在此控制方案下,45 Hz及以下,单体振动表现良好,室外机整机振动和噪音都满足要求。研究结论为后续研究更大功率单转子压缩机提供了一种参考方法。

Single-rotor compressor has advantages of high energy efficiency, small size and low leakage rate, which will make a wider application in frozen field. However, it is a universal phenomenon that the vibration of single-rotor compressor occurs at low speed with its inherent characteristic, and it will get worse under heavy load. One control method of low-frequency vibration reduction with 2 P refrigeration pipe system was designed to solve the phenomenon. Taking account of the suction pipe amplitude, outdoor unit amplitude, single-rotor compressor amplitude and outdoor unit noise, experimental results show that single-rotor compressor amplitude below 45 Hz, outdoor unit amplitude and unit noise with all the frequency can meet the requirements. The method can provide a way to research single-rotor compressor of high power.