直流电压对氦有阀线性压缩机活塞偏置及输出性能影响  

Influence of DC voltage on piston offset and output performance of helium valve linear compressor

作　　者：李子成 丁磊[1] 沙鑫权 黄琦 蒋珍华[1,2] 刘少帅 Li Zicheng;Ding Lei;Sha Xinquan;Huang Qi;Jiang Zhenhua;Liu Shaoshuai(Shanghai Institute of Technical Physics,Chinese Academy of Science,Shanghai 200083,China;University of Chinese Academy of Science,Beijing 100049,China)

机构地区：[1]中国科学院上海技术物理研究所,上海200082 [2]中国科学院大学,北京100049

出　　处：《低温工程》2022年第5期53-58,64,共7页Cryogenics

基　　金：中国科学院率先行动“引才计划”B类,国家自然科学基金(51806231);中国科学院战略性先导科技专项(B类)(XDB35000000,XDB35040102)。

摘　　要：基于活塞偏置理论,建立了直流电压对活塞偏置抑制数学模型,搭建了氦有阀线性压缩机活塞偏置抑制实验台,分析加直流电压抑制活塞偏置对压缩机的影响。研究表明:直流电压可完全抑制活塞偏置。当有效行程达到最大时,所需直流电流为1.09 A,占总电流的20.8%,直流功耗5.347 W,占总功耗的4.9%。采用直流电压抑制活塞偏置增大了压缩机有效行程能够提高压缩机的最大压比和质量流量,增加等熵效率,但引入的直流电流会造成电机绕线的总电流增大,对绕线直径提出更高的要求,导致电机尺寸增大。该研究为使用直流电压抑制活塞偏置的可行性及合理性提供理论和实验支撑。Based on the piston offset theory,a mathematical model for the suppression of piston offset by DC voltage and a piston offset test bench for a valved linear compressor to analyze the effect of DC voltage on the compressor are built.The results show that the DC voltage can completely suppress piston offset.When the effective stroke reaches the maximum,the required DC current is 1.09 A,accounting for 20.8%of the total current.At the same time,the DC power consumption is 5.347 W,accounting for 4.9%of the total power consumption.The DC voltage can inhibit the piston offset and increase the effective stroke of the compressor.Thus the maximum pressure ratio,mass flow rate,and the isentropic efficiency of the compressor are improved.However,the DC current will increase the total current of the motor winding,resulting in a larger wire diameter,hence an increase in the size of the motor.This study provides theoretical and experimental support for the feasibility and rationality of using DC voltage to suppress piston offset.

关 键 词：有阀线性压缩机 节流制冷 活塞偏置 输出特性 深低温 

分 类 号：TB652[一般工业技术—制冷工程]