| 计算开度法电子膨胀阀供液控制技术研究 |
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| 引用本文： | 王恕清.计算开度法电子膨胀阀供液控制技术研究[J].制冷与空调(北京),2012(3):116-121. |
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| 作者姓名： | 王恕清 |
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| 作者单位： | 大连冰山集团有限公司设计研究院 |
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| 摘 要： | 计算开度法是一种适用于满液式或降膜式冷水/热泵机组的电子膨胀阀供液控制技术。该技术的核心思想是实时计算压缩机的吸气质量流量和通过电子膨胀阀的制冷剂液体质量流量,并计算为保持前述二者始终相等的电子膨胀阀准确开启步数。该技术同其他供液控制技术相比,具有控制精度高、稳定性高、成本低等诸多优点。本文结合一个具体的降膜式螺杆式冷水机组实例,对计算开度法电子膨胀阀供液控制技术进行全面深入的阐述。最后得出结论：计算开度法电子膨胀阀供液控制技术,如果应用得当,可为降膜式或满液式冷水/热泵机组的稳定性和运行效率的提高发挥积极的作用。
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| 关 键 词： | 冷水/热泵机组 降膜式 满液式 计算开度法 电子膨胀阀 供液控制 双变量函数 |
Study on liquid supply control technology of calculation open degrees method of electronic expansion valve |
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| Wang Shuqing.Study on liquid supply control technology of calculation open degrees method of electronic expansion valve[J].Refrigeration and Air-conditioning,2012(3):116-121. |
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| Authors: | Wang Shuqing |
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| Affiliation: | Wang Shuqing(Research ＆ Design Institute of Dalian Bingshan Group Co.,Ltd.) |
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| Abstract: | Calculation open degrees method is a kind of EEV liquid supply control technology which can be used for flooded or falling-film water chiller/heat pump.The core idea of the technology is real-time calculating of mass flow through compressor and liquid refrigerant mass flow through EEV,and calculating the accurate open steps of EEV which keep the two mass flow mentioned equality.Compared with other liquid supply control technology,the technology has such many advantages as high control accuracy,high stability and low cost.The calculation open degrees method of EEV liquid supply technology is explained,via an example of falling-film screw water chiller.Finally,it reaches the following conclusion： if it is applied properly,the calculation open degrees method of EEV liquid supply technology could make greater contribution to the improvement of stability and efficiency of falling-film or flooded water chiller/heat pump. |
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| Keywords: | chiller/heat pump falling film type flooded type calculation open degrees method electronic expansion valve liquid supply control two-variable function |
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