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首页> 外文期刊>International Journal of Refrigeration >Dynamic behaviors of the crankshafts in single-cylinder and twin-cylinder rotary compressors
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Dynamic behaviors of the crankshafts in single-cylinder and twin-cylinder rotary compressors

机译：单缸和双缸旋转压缩机中曲轴的动态特性

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Refrigeration rotary compressors are widely used in air-conditioners. A rotary compressor has a special rotor-bearing system, since the elastic cantilevered crankshaft is under dynamic transverse forces on different planes. The large deformation of the crankshaft would affect the thickness of the oil film, wear the bearings down or even induce the rotor-to-stator rubs. It is considered as a non-linear fluid structure interaction problem. To ensure the compressor operating well, the dynamic behaviors of both single-cylinder and twin-cylinder compressors' crankshafts at various speeds are analyzed. The influence of configuration of balancers on the reliability of rotor system is investigated for the further. Calculation results suggest that the vulnerable sections of crankshaft vary with the rotational speed. It is also found that 80% of the dynamic balance is the optimum design condition to reduce the transverse forces on crankshaft and the wear-out of journal bearings. (C) 2014 Elsevier Ltd and IIR. All rights reserved.
机译：制冷旋转压缩机广泛用于空调。旋转式压缩机具有特殊的转子轴承系统，因为弹性悬臂曲轴在不同平面上承受动态横向力。曲轴的大变形会影响油膜的厚度，使轴承磨损，甚至引起转子到定子的摩擦。它被认为是非线性的流体结构相互作用问题。为了确保压缩机正常运行，分析了单缸和双缸压缩机曲轴在不同速度下的动态行为。进一步研究了平衡器的配置对转子系统可靠性的影响。计算结果表明，曲轴的易损部分随转速变化。还发现，动平衡的80％是减少曲轴上的横向力和轴颈轴承磨损的最佳设计条件。 （C）2014 Elsevier Ltd和IIR。版权所有。

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