In addition to the filter drier, what else can be used to purify the refrigerant of the refrigerator?

1. Oil separator

Some people say that the oil separator is not used to separate refrigerant and frozen lubricating oil? What purification effect does it have? In fact, it is precisely because of the existence of the oil separator that the refrigerated lubricating oil can be separated normally from the refrigerant, and the refrigerated lubricating oil can be cooled, precipitated and filtered. This is very important. Otherwise, the circulating lubricating oil will be affected. There are impurities, and the continuous circulation process will greatly reduce the use effect of the refrigerating lubricant and allow the refrigerant to entrap more impurities.

Therefore, the oil separator also has a certain purification effect. Although it does not directly purify the refrigerant, the purification effect is there.

2. Use some special devices to separate air and other gases that cannot be combined with refrigerant.

Air often enters the refrigerator system due to sealing or other reasons. When the air enters the system, it cannot be combined with the refrigerant. It can be used normally, otherwise, there is no guarantee that the refrigerant is normal. Use some special devices, such as non-condensable gas separation devices, to separate air and other gases. After separation, the normal refrigerant can be guaranteed.

Three, gas-liquid separator

The gas-liquid separator is a common gas-liquid separation device. It must be installed behind the evaporator. For incomplete evaporation, it is not completely turned into a gas or liquid refrigerant for separation. Only the liquid refrigerant is separated. The gaseous refrigerant Only then can it enter the compressor normally, and the compression in the working chamber cylinder can be normalized.