Quickly learn to solve the situation of the glass door of the freezer running out of wind

The glass door manufacturer tells you about the cooling problem of the freezer: it is very common that the temperature of the fresh freezer cannot drop or drops slowly. So why can't the temperature of the new cabinets drop? Below, I will dissect your reasons, I hope it can help you! !

1. There is more air or refrigeration oil in the evaporator of the fresh freezer to reduce the heat transfer effect. Once more refrigerating machine oil is attached to the inner and outer surfaces of the heat transfer tube of the refrigerator transpirator, the heat transfer coefficient will be greatly reduced.

Similarly, if there is more air in the heat transfer tube, the heat transfer area of ​​the evaporator in the supermarket freezer will be reduced, the heat transfer efficiency will also be greatly reduced, and the temperature of the refrigeration room will drop, and then slow down. Therefore, in daily operation and maintenance, care should be taken to remove the grease inside and outside the heat exchange tube of the supermarket fresh-keeping cabinet evaporator in time, and discharge the air in the supermarket fresh-keeping cabinet evaporator to increase the heat. Transfer efficiency of supermarket freezer transpirators.

2. If the throttling valve is improperly adjusted or blocked, the refrigerant flow is too large or the flow regulating valve is too small or improperly adjusted, it will directly affect the flow of refrigerant into the evaporator of the supermarket fresh-keeping store. If the throttle valve opening is too large and the snow seed flow is too large, the transpiration pressure and transpiration temperature will also increase, and the cooling speed of the refrigerator will slow down; at the same time, when the throttle valve opening is too small or blocked, the snow seed flow will also decrease. If it is reduced, the cooling capacity of the system will also decrease, and the cooling rate of the refrigeration room will also decrease. Generally speaking, we can judge whether the flow rate of the throttle valve is appropriate by observing the transpiration pressure, transpiration temperature and straw frosting.

In summer, the ambient temperature is too high, and the temperature difference between the refrigerator and the fresh-keeping cabinet is too large, which will also cause the temperature of the refrigerator to not drop. Of course, there are many factors that cause the temperature of the freezer to not drop