【作者】 程章展； 甘智华； 刘华钊； 蒋珍华； 梁楠； 邱利民； 陈国邦；

【Author】 Cheng Zhangzhan Gan zhihua Liu huazhao Jiang zhenhua Liang nan Qiu Limin Chen Guobang (Cryogenics lab., Zhejiang University, Hangzhou, 310027)

【机构】 浙江大学制冷与低温研究所；

【摘要】 GM型低温制冷机的压力波发生系统通常包括压缩机和平面旋转阀。而平面旋转阀的时序又是低温制冷机的一个重要参数,它决定了制冷机系统进气、排气过程之间的相互关系。本文着重就GM型单级脉管制冷机的时序特性进行了实验研究。实验结果表明,在不同的阀门开度优化情况下,不同温区相应的最佳时序也有所不同。更多还原

【Abstract】 A compressor together with rotary valve system generates pressure oscillation in a GM-type pulse tube refrigerator. The timing of the rotary valve, which is a key operating parameter for cryocoolers, determines the relationship between the intake and exhaust process. In this paper, the valve timing characteristics are investigated experimentally. The experiments show that the valve timing has considerable effects on the cooling system. And the optimum valve timing is different according to different valve openings or temperature ranges.更多还原