| The moving magnet linear compressor is a reciprocating linear compressor.Moving magnetic linear compressor is an important part of refrigerator refrigeration system.This paper takes the moving magnet linear compressor mover assembly as the research object,combined with the finite element analysis software to carry out in-depth research on the structure and performance of the mover assembly.The specific research work is as follows:(1)This article mainly introduces the working principle and working process of moving magnet linear compressor.For the mechanical structure design of the mover assembly and the study of the movement characteristics of the mover assembly,a mathematical model of the mover assembly is established.(2)Using the finite element simulation analysis method,the static performance of the moving magnet linear compressor mover assembly under different axial forces is studied.The maximum static stress range of the movable subassembly is20.4MPa-61.3MPa;the maximum static displacement range of the movable subassembly is 3.2mm-8.4mm.Provide a theoretical basis for the multi-objective optimization of moving sub-components in the following article.(3)The finite element simulation analysis method is used to study the modal performance and transient performance of the moving magnet linear compressor mover assembly.The natural frequency range of the first six modes of the moving magnet linear compressor moving subassembly is obtained from 0.97 Hz to 42.27 Hz.It is obtained that the maximum axial displacement range of the mover assembly is2.3mm-9.1mm;the maximum axial velocity range of the mover assembly is14.8mm/s-99.4mm/s;the maximum transient stress range of the mover assembly is16.6MPa-58.4MPa.(4)Using the finite element simulation analysis method to optimize the multi-objective parameters of the moving subassembly,the results show that the maximum static displacement of the moving subassembly is reduced by 3.6%;the maximum static stress of the moving subassembly is reduced by 6.5%;the mass of the moving subassembly is reduced The maximum axial velocity of the mover assembly increased by 2.9%;the maximum axial displacement of the mover assembly increased by 8.8%;the maximum transient stress of the mover assembly decreased by 6.7%;the first-order mode of the mover assembly was inherent Frequency increased by 15.4%;second-order mode natural frequency increased by 15.3%;third-order mode natural frequency increased by 14.3%;fourth-order mode natural frequency increased by14.4%;fifth-order mode natural frequency increased The natural frequency of the sixth-order mode has increased by 15.5%.(5)Verification by experiments on the displacement of the mover assembly after the optimization of the moving magnet linear compressor.The results show that the maximum displacement of the optimized mover assembly is increased from 9.1mm to9.9mm,the experimentally measured displacement of the mover assembly is 9.5mm,the simulation and experiment error is 4%,which meets the design requirements;the multi-objective optimization of the mover assembly is verified Reasonableness.There are 74 pictures,20 tables,54 references... |
