小型对置式直线压缩机模拟及实验研究

直线压缩机具有体积小、摩擦力小、效率高以及无油润滑等优点，其小型化设计在微电子冷却及微型空调领域具有重要的发展前景。利用Ansoft Maxwell有限元分析软件建立了动磁式直线电机模型，确定了谐振工况下直线电机结构及性能参数，通过数值积分分析了空载和负载工况下的活塞位移。根据理论分析和模拟，研制了对置式直线压缩机实验样机，压缩机总质量为1.2 kg，总长度为118 mm。实验结果显示：以R134a为制冷剂时，在冷凝压力为0.79 MPa、蒸发压力为0.39 MPa下，制冷量为57.3 W。模拟及实验结果对直线压缩机小型化设计具有参考价值。

Simulation and experimental research on small opposed linear compressor

Linear compressor has the advantages of small volume, small friction, high efficiency, and oil-free lubrication. Its miniaturization design is promising in the fields of microelectronic cooling and micro air-conditioning. A moving-magnet motor model was developed by the finite element analysis software of Ansoft Maxwell, by which the structure of the linear motor and performance under resonance conditions were determined. And the piston displacement under no-load and load conditions was analyzed by numerical integration. The experimental prototype of opposed linear compressor was developed based on the theoretical simulation. The compressor mass was 1.2 kg and its length was 118 mm. The experimental results showed that when evaporation pressure and condensation pressure were 0.39 MPa and 0.79 MPa, respectively with R134a as refrigerant, the cooling capacity of this system was 57.3 W. The simulation and experimental results can provide references for the miniaturization design of linear compressor.