Why is the temperature drop of the newly opened freezer slow

In the current market, the quality of products produced by non-professional refrigeration equipment manufacturers is not balanced. In order to reduce costs, the compressor power supply and the area of ​​the evaporator gold tube may not meet the requirements. The insulation layer or insulation layer can only be replaced by foam. The leakage of cold air will be serious, the temperature of the freezer will not drop, or the cooling effect will be long. Therefore, choosing a regular refrigeration equipment manufacturer is a prerequisite for purchasing a freezer.
1. For refrigerators produced by regular refrigeration equipment manufacturers, first check whether the temperature of the refrigerator is set correctly. If the temperature adjustment itself is not low, the temperature will not automatically drop. The ambient temperature of the open refrigerator is too high, and the cooling time also requires an extended process.
2. Insufficient refrigerant is one of the important reasons that the refrigerator cannot be cooled. After working for several years, there will be a shortage of refrigerant, and only a sufficient amount of refrigerant needs to be added. If there is refrigerant leakage, first find the leakage point, check the joints of the pipes and valves, find the leakage part, modify it, and then charge the refrigerant.
3. Improperly adjusting the throttle valve or cutting off the throttle, or the refrigerant flow rate is too large or too small, will directly affect the refrigerant flow into the evaporator. After the throttle is opened, the refrigerant flow rate increases significantly, the evaporating pressure and evaporating temperature increase, and the temperature drop rate of the freezer slows down.
4. If the appearance of the evaporator of the freezer is too thick or too much dust, the heat transfer effect will be reduced. The appearance of the evaporator is too thick or too dusty, and the heat transfer power of the evaporator is low. Another important reason for the temperature slowdown of the evaporator is the low heat transfer power of the evaporator.
If the condenser is too dusty or the refrigerator is leaning against the wall, the thermal cooling is poor, and the cooling effect may be an important reason for the deterioration, especially in summer. This effect is particularly obvious. Therefore, keep the ventilation around the freezer well and keep the condenser clean and free. Dust is a quick guarantee for cooling the freezer.
Why does the temperature of the newly opened refrigerator slow down? The effect of insulation materials and insulation materials may not be good, mainly because the wrong insulation layer thickness is selected during design, or the quality of insulation materials is not good during construction. In addition, during the construction process, the heat and moisture resistance of the heat insulation layer is destroyed, and moisture, deformation, and corrosion of the heat insulation layer will occur. Another important reason for the large cooling loss is that the sealing performance is not good, and more hot air flows in from the leak. Generally speaking, if the finishing phenomenon occurs in the sealing of doors and windows or the heat insulation sealing of the freezer, it means that the sealing is not strict. In addition, often close the door or many people enter the warehouse together, the loss of cooling capacity will also increase. Do not open the door to avoid as much hot air as possible.