Structural optimization of micro rotary compressors based on gap leakage model
A gap leakage mathematical model based optimization design method was proposed to address the internal refrigerant leakage problem faced by micro rolling rotor compressors in pursuit of compact design and efficient operation.By examining the influence of the minimum leakage channel gap,relative eccentricity,and relative cylinder length on the leakage volume of Refrigerant 290(R290)and Refrigerant 32(R32)compressors under a condition of fixed exhaust volume,and by comparing the leakage losses of two types of refrigerant compressors under various structural configurations,the key structural parameters affecting energy efficiency were identified.Based on these findings,an optimized design scheme was proposed,wherein the relative eccentricity and relative cylinder length were adjusted to 0.213 0 and 0.4,respectively,and the radial gap was reduced to 10 μm.Consequently,the volumetric efficiency increased from 46.77%to 67.48%,achieving an efficiency improvement of 44.28%.
micro rolling rotor compressorvolumetric efficiencyleakage lossmathematical modellubricant-refrigerant mixturenatural refrigerant
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