The strengths for flow regulation and superheat adjustment of electronic expansion valve are purposed,as well as the development trend is analyzed in air-conditioning or commercial freezing area.

• 从制冷系统节流机构的流量调节稳定性、过热度控制原理、系统节能、瞬态反应特性、部分负荷调节特性方面,比较分析了几种节流机构应用于制冷装置中的特点。