Refrigerant recycling, purifying and filling system

The invention provides a refrigerant recycling, purifying and filling system which comprises two groups of oil separators, two groups of filtering dryers, an evaporator, a condenser, a compressor, a capillary tube, a recycling container and a valve, wherein an improved gas compression recycling method is adopted for recycling the refrigerant; the combined mode of pre-purification before recyclingand internal circulation purification after recycling is adopted for purifying the refrigerant; and the quantitative mode during the refrigerant filling process adopts the quantitative filling methodbased on capacitance type liquid level detection. The refrigerant recycling, purifying and filling system realizes integrated design of recycling, purification and filling of the refrigerant. 本发明提供了一种制冷剂的回收、净化、充注系统，包括两组油分离器、两组过滤干燥器、蒸发器、冷凝器、压缩机、毛细管、回收容器和阀件；制冷剂的回收采用改进的气体压缩回收法；制冷剂的净化采用回收前的预净化与回收后的内循环净化相结合的模式；在制冷充注过程中的定量方式，采用基于电容式液位检测的定量充注法；通过该系统实现了制冷剂的回收、制冷剂的净化、制冷剂的充注一体式设计。