Analysis on dynamic characteristics and friction loss of miniature oil-free rolling piston compressor
The friction loss caused by the oil-free operation of miniature oil-free rolling piston compressor can not be ignored.Therefore,it is important to know how to reduce the friction loss of miniature oil-free rolling piston compressor.For this purpose,a study was conducted on the friction power consumption of the main friction pairs of miniature oil-free rolling piston compressor under varying operating conditions and structures.Firstly,a mathematical model for the dynamic analysis of miniature oil-free rolling piston compressor was established.Then,the force characteristics of the main components of the miniature oil-free rolling piston compressor were analyzed,and the variation law of the friction power consumption of the main friction pair with the spindle angle was calculated.Finally,the influence of exhaust pressure,slide thickness,eccentricity,and relative cylinder length on the friction power consumption and proportion of the main friction pairs in miniature oil-free rolling piston compressor were analyzed.The research results show that the discharge pressure of the miniature oil-free rolling piston compressor increase from 1 100 kPa to 1 800 kPa,and the total friction power consumption increase by 67.7％,while the total friction power consumption only increase by 32.8％.The eccentricity of the miniature oil-free rolling piston compressor increases from 0.06 to 0.2,and the total friction power consumption increase by 121.5％.The relative cylinder length of the miniature oil-free rolling piston compressor increases from 0.25 to 0.6,and the total friction power consumption increase by 31.9％.According to the analysis results,the most suitable eccentricity value for the miniature oil-free rolling piston compressor is around0.14.The optimized eccentricity has the most significant effect on improving the friction loss of the miniature oil-free rolling piston compressor followed by changing the thickness of the sliding plate,and finally changing the length of the corresponding cylinder.
miniature oil-free rolling piston compressordistribution law of friction lossmathematical modeleccentricityslider thicknessrelative cylinder lengthforce analysis
NETL
NSTL
万方数据
