变频压缩机停机减振核心技术研究

Research on the core technology of vibration reduction of inverter compressor

往复式压缩机曲轴平衡块平衡压缩机机芯运转时的动平衡,压缩机停机瞬间机芯处于非平衡状态,由于停机瞬间机芯转动惯性的存在,机芯会保持原有运动状态,制冷系统给机芯的反作用力很容易导致机芯在停机瞬间抖动,产生噪音。通过研究压缩机停机瞬间的振动噪音,提出几种减小机芯停机瞬间冲击能量的方案并进行试验比较,针对不同使用情况给出最优压缩机停机控制方案,减小停机瞬间的振动噪音波动。

The crankshaft balance block of reciprocating compressor is to deal with the dynamic balance of the compressor core during operation.When the compressor stops,the movement is in unbalanced state.Due to the existence of the inertia of the movement at the moment of shutdown,the movement will remain in the original state of motion.The reaction force of the refrigeration system to the core is easy to cause the core to shake at the moment of shutdown and generate noise.By studying the vibration noise at the moment of compressor stop.Several schemes to reduce the instantaneous impact energy of the machine core during shutdown are put forward and compared with the experiments.According to different application conditions,the optimal control scheme of compressor shutdown is given to reduce the vibration and noise fluctuation at the moment of shutdown.