| 摘要: |
| 直线压缩机冰箱制冷系统的实验研究显示，在初始启动调节后供电参数保持不变过程中，直线压缩机出现了不稳定波动现象。最大的行程波动率约为3.8%，输入功的波动率约为21.3%，波动周期约为220 s。通过建立的直线压缩机动态仿真模型，对该不稳定现象进行解耦分析，结果表明：吸气压力的波动对直线压缩机行程的影响较大，排气压力的波动对其影响很小，但行程的波动对排气压力有一定的影响。直线压缩机启动过程中行程的反复调节引起了排气压力出现较大的波动，经过一段稳定运行后，该波动传递到直线压缩机的吸气端，从而引起了所述的不稳定波动。 |
| 关键词: 直线压缩机 电冰箱 运行工况 |
| DOI： |
| 投稿时间：2018-05-07 修订日期：2018-06-13
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| 基金项目: |
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| Mechanism Analysis on the Fluctuation of Linear Compressor in Refrigerator |
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Zou Huiming1, Wang Min1,2, Tang Mingsheng1, Tian Changqing1
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| (1.Beijing Key Laboratory of Thermal Science and Technology, Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, CAS;2.University of Chinese Academy of Sciences) |
| Abstract: |
| The experimental results of a refrigerator system with linear compressor showed that there was a period of piston stroke fluctuation as the supply power remained unchanged after an initial start-up adjustment. The maximum fluctuation rate of the piston stroke was 3.8% and that of the input power was 21.3%. The period of fluctuation was approximately 220 s. In this paper, the mechanism of this fluctuation is analyzed based on a simulation model set up for linear compressor. The fluctuation of the suction pressure is the dominant cause of stroke fluctuation. The fluctuation of the discharge pressure has little influence on the stroke fluctuation, while the stroke fluctuation has a significant effect on the discharge pressure. The fluctuation of the discharge pressure caused by the adjustment of the stroke control transfers to the suction part and causes the unstable fluctuation. |
| Key words: linear compressor refrigerator operating conditions |
