The vane-slot friction pair, as a key component in rotary compressors, directly impacts the reliability and energy consumption performance of the compressor. Constructing a comprehensive tribodynamic model to analyze the thermo-elastohydrodynamic (TEHD) lubrication behavior of the vane-slot is crucial for the design optimization of this friction pair. However, traditional studies have overlooked the influence of the rolling piston and spring, which are closely coupled with the vane, leading to simplified modeling and analysis of the lubrication performance. To address this, this study established a comprehensive vane tribodynamic model, which considered the dynamic coupling between the rolling piston and the vane as well as the misalignment of the spring installation. Based on this model, the tribological behavior of the vane-slot was simulated in detail. The results indicated that the influence of the rolling piston and spring installation misalignment on the tribodynamic performance of the vane-slot cannot be neglected. By modifying the spring installation position and the vane-slot profile, the oil film load capacity can be significantly improved, and friction losses are reduced by approximately 8%.
Wang et al. (Mon,) studied this question.