Refrigeration Principle And Maintenance Knowledge Of Top Open Door Freezer

Update:28 Jan 2023

Refrigeration principle of Top Open Door Freezer

Vaporization is endothermic, liquefaction is exothermic. The working principle of refrigerators and air conditioners is the same: refrigerant → compressor → liquid refrigerant → radiator → liquid refrigerant → capillary tube → vaporization of the evaporator inside the refrigerator, that is, heat absorption → the temperature in the refrigerator will drop → refrigerant → compressor. The heat in the box is transported outdoors with the refrigerant at a cost of repeated cycles.

Top door freezer maintenance knowledge

Frost is a poor conductor, and its conductivity is 1-350 times that of aluminum. Frost covers the surface of the evaporator and becomes a thermal insulation layer between the evaporator and the food in the box, affecting the evaporator and the food in the box. The heat exchange prevents the temperature inside the box from dropping, thereby reducing the refrigeration performance of the refrigerator and increasing power consumption. It may even cause the compressor to heat up due to long-term operation, making the compressor easy to burn out. Also, there are various food smells in the cream. If the frost is not defrosted for a long time, the refrigerator will emit a peculiar smell. Generally speaking, when the thickness of the frost layer reaches 5mm, it needs to be defrosted.

Precautions for moving the top door freezer

When transporting, lift your feet up, don't grab the door handle, don't press the table and condenser hard, and don't drag it on the ground; the maximum inclination angle of the box should not exceed 45 degrees, and it can't be turned upside down or placed horizontally. Damage to the compressor or making the refrigerant in the compressor flow into the refrigeration pipeline, will affect the refrigeration and easily cause the compressor to fail. During transportation, it is necessary to prevent bumps or severe vibrations, as well as rain and water.
Influence of ambient temperature

An increase in ambient temperature will lead to a series of problems such as slower heat dissipation of the refrigerator, slower temperature drop in the box, longer startup time, and increased power consumption. As the ambient temperature rises, due to the large temperature difference between the inside and outside of the refrigerator, the heat dissipation rate of the cabinet insulation layer will also increase, resulting in a large amount of cooling loss, resulting in shorter downtime, longer response time and higher power consumption. According to the experimental data analysis of ordinary refrigerators, when the ambient temperature reaches 32°C, the power consumption is about 2 times that of 25°C, and the power consumption at 30°C is about 1.6-1.8 times that of 25°C.