Refrigerator capillary ice plugging, oil block, what is the phenomenon of "block" distinction?! Why is it blocked?
In the case of ice jam due to the excessive water content of the refrigerant, a dry filter can be added to the outlet of the refrigerant cylinder. The water is absorbed when the refrigerant is charged.What is capillary "wax" phenomenon?Because of R22 and frozen oil cosolvency, after years of circulation, frozen oil R22 containing a certain proportion of the oil in the wax precipitation at low temperature, in the refrigeration cycle, the exit of the capillary wall wax component will be gradually deposited in very low temperature, capillary diameter smaller flow resistance increases, resulting in decreased performance of refrigeration.
How do we exclude capillary ice blockage?After the capillary ice jam is determined, the refrigerant in the refrigeration system is released and vacuum drying is carried out again. The main parts of the refrigeration system, evaporator and condenser are cleaned once.
The judgment method is: the power supply is switched on, the compressor starts running, an evaporator, condenser heat, as the "ice block" form, all have light cream evaporator, dull sound compressor running, no air is blown indoors. After the shutdown, with a hot towel wrap into the capillary evaporator repeatedly at the entrance, as the ice melted at the block and can hear the sound of the flow of refrigerant pipeline unobstructed, compressor, evaporator and compressor to frost, after a period of operation, it will produce the above, it can determine the capillary ice blockage.
Ice jam is due to poor vacuum treatment of refrigeration system, excessive water content or excessive water content in the refrigerant itself. Ice jam occurs mostly at the exit of the capillary. When the liquid refrigerant evaporates from the capillary to the evaporator, the volume expands greatly, becoming a gaseous state, absorbing large amounts of heat. At this point, the evaporation temperature can reach about 5 degrees, and the micro water in the system freezes with the refrigerant when it reaches the outlet of the capillary. As the refrigerant continues to cycle, the amount of ice formed increases gradually, and the capillary is completely blocked up to a certain extent.
