P-V图和阀片运动图在冰箱压缩机性能评价中的应用  

Applications of P-V Diagram and Valve Motion Diagram in Performance Evaluation of Refrigerator Compressors

作　　者：甘宏伟 金华强 顾江萍 黄跃进 王新雷 沈希[1] GAN Hongwei;JIN Huaqiang;GU Jiangping;HUANG Yuejin;WANG Xinlei;SHEN Xi(College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, 310006;Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, 61801)

机构地区：[1]浙江工业大学机械工程学院,杭州310006 [2]美国伊利诺伊大学香槟分校农业与生物工程学院,厄巴纳61801

出　　处：《中国机械工程》2019年第10期1244-1249,共6页China Mechanical Engineering

基　　金：浙江省基础公益研究计划资助项目(LGG18E050024;LGG19E050020)

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66.825 W,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2.148 mm,排气阀片位移为0.825 mm。对压缩机吸排气阀片延时现象进行了分析。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.

关 键 词：压缩机 P-V图 阀片运动图 循环功耗 

分 类 号：TK31[动力工程及工程热物理—热能工程]