P-V图和阀片运动图在冰箱压缩机性能评价中的应用

摘要/Abstract

摘要： 通过建立新的实验平台，准确测量压缩机各腔体内的气体压力和吸排气阀片的升程量，获取真实的P-V图和阀片运动图。对压缩机P-V图和阀片运动图进行同步研究和分析，得到阀片动作与压缩机内部工作过程的耦合关系，从而为压缩机优化提供方法。实验数据表明：在ASHRAE工况下，该款压缩机循环功耗为66.825W，其中排气压力损失功耗占比为4.254%，吸气压力损失功耗占比为1.2%，吸气阀片位移为2.148mm，排气阀片位移为0.825mm。对压缩机吸排气阀片延时现象进行了分析。

关键词: 压缩机, P-V图, 阀片运动图, 循环功耗

Abstract: By establishing a new experimental platform, the gas pressures in each chamber of the compressors and the movements of the suction and exhaust valves were measured, and the true P-V diagram and valve motion diagram were obtained. By studying and analyzing P-V diagram and valve motion diagram of the compressors synchronously, the coupling relationship between valve actions and internal working processes of compressors was obtained, which provided a method for compressor optimization. The experimental data show that under the working conditions of ASHRAE, the compressor cycle power consumption is as 66.825 W, the percentage of the loss of exhaust pressure consumption is 4.254%, the percentage of the loss of suction pressure consumption is 1.2%, the displacement of suction valve plate is as 2.148 mm, and the displacement of the exhaust valve plate is as 0.825 mm. The phenomena of the delay of suction and exhaust valves of compressor were analyzed.

Key words: compressor, P-V diagram, valve motion diagram, cycle power consumption

中图分类号:

TK31

甘宏伟1;金华强1;顾江萍1;黄跃进1;王新雷2;沈希1. P-V图和阀片运动图在冰箱压缩机性能评价中的应用[J]. 中国机械工程.

GAN Hongwei1;JIN Huaqiang1;GU Jiangping1;HUANG Yuejin1;WANG Xinlei2;SHEN Xi1. Applications of P-V Diagram and Valve Motion Diagram in Performance Evaluation of Refrigerator Compressors[J]. China Mechanical Engineering.

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