The Optimization Of Hybrid Scroll Wraps Based On MATLAB Genetic Algorithm Toolbox

With the growing popularity of refrigeration equipments such as refrigerators,air conditioners,etc. the rapid development of automobile industry,the impact of energy shortages,scroll compressor is a new type compression machine developed in recent years with high efficiency,low energy consumption,compact structure,smooth operation,etc.The theory was studied by researchers in many countries and was applied in the design and manufacture of compressor.However, room utilization factor and efficiency of the conventional scroll compressor was limited due to its own structural characteristics.In the development of high-performance scroll compressor,with the increase of the vortex ring number,leakage line was longer,compression chamber leakage was increased,thereby compressor efficiency was decrease and processing costs was increased.Therefore,the optimization of the scroll profile has been had the attention of various research units.The geometric theory and the general theory of hybrid wraps were described in detail,integrated form of hybrid wraps was given combined equidistance line theorys in the paper.According to the optimization of the hybrid wraps scroll profile,the calculating formula of stroke volume was gotten based on normal equidistance line method.The paper established the mathematical model which made the stroke volume as the objective function for hybrid wraps scroll profile, selected the genetic algorithm as optimization in order to improve area utilization of scroll plate and stroke volume of the scroll compressor.Based on MATLAB genetic algorithm toolbox,the objective function was optimized. The optimal result shows that hybrid wraps scroll profile has larger stroke volume by comparing the optimal result with hybrid wraps profile under the different parameters and involute profile.Because of the complexity of hybrid wraps scroll profile,it is more difficult to process orbiter than conventional scroll wrap.The processing of hybrid wraps scroll profile was discussed, high order curve was processed by interpolation algorithm, Tools'trajectory equation of CNC milling machine was given in the paper combined with the precision requirements for orbiter and numerral control.