Influence of Different Geometry Parameters on Performance of Flexure Spring for Micro-compressor
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摘要: 板弹簧技术是线性压缩机驱动的微型斯特林制冷机长寿命、高可靠运行的关键技术之一。本文中设计了3款不同形式的微型压缩机用柔性板弹簧,并基于有限元法展开了不同板簧厚度、涡旋槽宽度、涡旋臂数目这3个几何参数对板弹簧性能的影响分析,最后总结出几何参数对板弹簧性能影响规律。Abstract: The flexure spring is one of the key technologies of the long life and high reliability of the Micro-miniature cryocooler. In this paper, three kinds of flexure spring for micro-compressors are designed via finite element method. The different thickness of the spring, width of the spiral groove and number of the spiral arms are simulated. The influence of the three geometric parameters on the performance of the flexure spring is analyzed.
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Key words:
- Micro-compressor /
- flexure spring /
- finite element method /
- performance analysis
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表 1 板弹簧的基本尺寸
臂数 内径 外径 涡旋线内径 涡旋线外径 3 3 mm 31.4 mm 5 mm 27 mm 表 2 压缩机板弹簧性能参数
型线类型 轴向刚度/
(N·m−1)最大应力/
MPa径轴向
刚度比阿基米德螺旋线 3210 360 5.016 圆渐开线 3283 355 18.513 圆渐开线偏心 3284 418 19.940 表 3 柔性板弹簧的几何参数
参数 阿基米德型 圆渐开线型 偏心型圆渐开线 厚度/mm 0.3 0.4 0.5 0.6 0.7 0.3 0.4 0.5 0.6 0.7 0.3 0.4 0.5 0.6 0.7 槽宽/mm 0.55 0.65 0.75 0.85 0.95 0.58 0.68 0.78 0.88 0.98 0.35 0.4 0.45 0.5 0.55 悬臂数 2 3 4 5 – 2 3 4 5 – 2 3 4 5 – -
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