摘要
针对传统冰箱因容积效率下降出现冷量衰减的问题,对往复式压缩机在100 Hz高速运行频率下设计2种不同排气阀片结构模型,分析了不同排气阀片运动特性以及排气阀片对压缩机制冷量和性能的影响。结果表明:排气阀片刚度是影响压缩机高速运行容积效率的重要因素;采用小刚度排气阀片与缓冲片组合方案能够提升压缩机高频冷量和低频性能。以排量为11 cm^(3)的压缩机为例,增加缓冲片后排气阀片组合刚度增加252.4%,压缩机在100 Hz运行时容积效率比原方案提升3.9%,33 Hz运行时性能(COP)比原方案提升0.04。
In view of the cooling capacity attenuation problem of traditional refrigerators due to the reduction of volumetric efficiency,two different exhaust valve plate structural models were designed for reciprocating compressors under the high speed operating frequency of 100 Hz,and the movement characteristics of different exhaust valve plates as well as the impact of exhaust valve plate on the cooling capacity and performance of the compressor were analyzed.The results show that the stiffness of the exhaust valve plate is an important factor affecting the volumetric efficiency of the compressor at high speed;The combination scheme of small stiffness exhaust valve plate with spring reed can improve the high-frequency cooling capacity and low-frequency performance of reciprocating variable frequency compressor.Taking an 11 cm^(3) displacement compressor as an example,the total stiffness of exhaust valve plate with spring reed is 252.4% higher than that of the initial exhaust valve plate,the volumetric efficiency of the compressor operating under 100 Hz is 3.9% higher than that under the original scheme,and the performance(COP)of the compressor operating under 33 Hz is 0.04 higher than that under the original scheme..
作者
黄传顺
朱红伟
HUANG Chuanshun;ZHU Hongwei(National Engineering Research Center of Green Refrigeration Equipment,Zhuhai 519070,China;Gree Electric Appliances,INC.of Zhuhai,Zhuhai 519070,China)
出处
《流体机械》
CSCD
北大核心
2023年第8期87-92,共6页
Fluid Machinery
基金
广东省自然科学基金面上项目(2020A1515011386)。
关键词
往复式压缩机
高速
排气阀片
缓冲片
容积效率
reciprocating compressor
high speed
exhaust valve plate
spring reed
volumetric efficiency
