Research On The Abnormal Wear Of The Rotary Compressor’s Roller

This paper firstly introduces the structure and working principle of the detailsof the compressor, and the interaction between components and roller. Points out thekey role is to ensure that the friction between vane and crankshaft is not too much,and setting the buffer components. Roller around the crankshaft eccentric part freerotation, so it can be around the crankshaft eccentric part to rotate freely, to delaythe leaf apex friction.Secondly, introduces the structure of rotary compressor, analyzing from the twoaspects of kinematics and dynamics, calculation models of the system descriptionand a roller slide system of the whole movement and stress state theory. The stressstate of the roller analysis, to determine the impact of each critical force of rollermotion and torque. The roller is the key of the abnormal wear is roller rotation speedand rotation angle, and effects of the four torque roller rotation: slide the roller,cylinder and roller, crankshaft eccentric part of roller, cylinder head and roller. Andthe typical model of A as an example, the output of the calculation, the change of thestress and motion state with crank angle. Points out that the effect of four rollerrotation friction torque, moment of friction torque of the crankshaft eccentric part ofroller and slide the roller plays a key role in. And through the theoretical analysisconclusion: factors associated with active torque is contact height, eccentricityclearance, roller radius, the need for adaptive design for different products.Then, the roller slide line contact condition of heavy load, the analysis from theelastic fluent lubrication angle, the roller-vane local influence factor between theroller and the slide material: apex radius. And analyzed the expansion of vane tipradius, can significantly reduce the maximum contact force, which reduces thefriction coefficient of the conclusion. And then through the friction test, for differentmaterials, different contact stress, different speed, different contact radius under thecondition of comparative study, the coefficient of friction of the conclusion: contactstress increases the friction coefficient is far greater than the speed increases,increases the contact radius can effectively reduce the friction coefficient. Finally,try to implement changes in compressor crankshaft eccentric part structure of real life test, abnormal wear of roller-vane apex radius scheme and the roller material toimprove the roller, and achieved good results, successfully solved many problems ofabnormal wear of roller, do root cause analysis and solution of purpose, againverifies the rationality.This study for the roller-vane sliding dynamics, kinematics, lubricationbetween the established model, and the theoretical calculation and experimentalresearch, and the system of rotary compressor’s roller abnormal wear analysis model.In order to solve the problem of development and the rotary compressor, providetheoretical and experimental basis set, lay a rotary compressor roller-vanewear thebasis for further research.