Cold storage refrigerator defrosting reasons and how to solve?

1. The condenser heat dissipation is insufficient

The lack of heat dissipation of the condenser is one of the more common reasons for defrosting of the cold storage refrigerator. In this case, the surface temperature of the condenser will become higher, which is easy to make the condenser adhere to part of the water vapor in the air, and eventually form frost. The solution is to increase the flow rate of cooling medium, clean the surface of condenser and improve the ventilation quality of condenser.

2. The condenser and ambient temperature are too high
When the temperature of the condenser and the environment is too high, the refrigeration efficiency of the cold storage refrigerator will become low, therefore, the evaporator pressure drop will increase, resulting in the evaporator supercooling, which promotes the formation of defrosting. The solution is to reduce the ambient temperature, increase the flow rate of the cooling medium, and clean the surface of the condenser.

3. The evaporator is too cold
The undercooling of the evaporator is also one of the reasons for the defrosting of the cold storage refrigerator. Generally because the evaporator pipeline is blocked, the refrigerant flow is reduced, etc., resulting in the evaporator temperature is too low. The solution is to check the evaporator pipeline, clean the pipeline, and increase the ventilation quality of the condenser.

4. Insufficient electrolyte
When the cold storage refrigerator electrolyte is too little, it will cause the compressor to overheat, resulting in defrosting phenomenon. Therefore, when using the refrigerator, ensure that the electrolyte is sufficient. The solution is to check whether the electrolyte flow is sufficient and add the necessary electrolytes in time.

In summary, there are many reasons for the defrosting of cold storage chillers, but they can be solved by checking and timely maintenance. Pay attention to keep the refrigerator clean, check whether the heat dissipation of the machine is sufficient, timely replacement of electrolytes and other measures.