R290变频热泵节流特性实验研究  

Experimental Study on Throttle Characteristics of R290 Variable Frequency Heat Pump

作　　者：黎辉玲 刘旭 李廷勋[1] 

机构地区：[1]中山大学,广州市510725 [2]广东美的制冷设备有限公司,顺德528311

出　　处：《家用电器》2017年第12期66-68,共3页Home Appliance

摘　　要：随着新型制冷剂R290逐渐进入家用房间空调器行业,研究表明由于其极低充注量和较高压缩机排量特点,制热模式下融霜结束重新制热可能出现节流异常现象。本文分析了R290热泵低温制热出现节流异常现象的机理,提出了R290变频空调在低温工况下节流异常解决方法并进行验证,表明通过设定电子膨胀阀开启曲线可以有效解决。With the new refrigerant R290 gradually into the home room air conditioner industry, the research shows that because of its extremely low charge and high compressor displacement characteristics,under heating mode, defrosting end of the heat operation may be appear throttle abnormal phenomenon. In this paper, the mechanism of throttling anomaly in low temperature heating of R290 heat pump is analyzed, and the method to solve the abnormal throttling of R290 inverter air conditioner under low temperature condition is presented, which shows that the opening curve of electronic expansion valve can be solved effectively.

关 键 词：新型制冷剂 节流特性 低温油堵 节流异常 

分 类 号：TM925.12[电气工程—电力电子与电力传动]