To optimize the capacity ,power ,noise and life of the compressor via studying the motion law of suction valves without lift limiters ,a basic idea of corroborating numerical simulations and physical tests was established .The refrigerant flow field and the valve structure field were cou-pled together to analog valves movement .ADINA FSI (fluid-structure interaction) module was used to get the valve displacement ,cylinder pressure ,suction speed and valve seat contact force during inhalation ,based on fluid mass ,momentum ,energy conservation law s and the tablet vibra-tion model .Analysis of the valve design parameters impacting on its dynamic response shows that reducing the thickness of valves can optimize the compressor's performance .Based on the maxi-mum effective flow area criterion ,the smallest and optimal thickness of the suction valve in WS75YV compressor is found .The simulation results of the velocity distribution of the refriger-ant under Eulerian coordinate and cylinder temperature during inhalation show that the phenome-non of overheating exist .Capacity of the compressor ,motor power ,and the ratio COP (coefficient of performance) were measured by the second refrigerant calorimeter method .After comparing theory and simulation values ,we can conclude that FSI method is feasible and compressors de-signed or optimized by FSI are reliable .%为了优化压缩机的制冷量、功率、噪音和寿命，以研究无升程限制器的吸气阀运动规律为目标，确立数值模拟和物理试验相互佐证寻求最佳阀片结构的基本思路。将制冷剂的流动场和阀组构成的结构场耦合起来模拟阀片的运动，利用ADINA流固耦合模块（fluid-structure interaction ，FSI），基于流体质量、动量、热量守恒定律和平板振动模型，得到了吸气过程中的阀片位移、缸内压力、吸气速度及阀片与阀座接触力的时程变化曲线。分析了阀片设计参数对其动态响应的影响，发现减小厚度可以优化压缩机性能，根据最大有效流通面积准则，得到了WS75YV型号压缩机的吸气阀最小即最优厚度。欧拉坐标系下制冷剂的速度分布及气缸内温度随时间的变化过程的模拟结果表明，压缩机吸气过程存在过热现象。采用第二制冷剂量热计法测量压缩机的制冷量、电机功率和其比值（co ef f i-cient of performance ，COP），对比压缩机性能的理论和模拟计算值，证明流固耦合模拟方法可行，基于此对压缩机进行设计和优化是可靠的。
展开▼
