Refrigeration principle of Top Open Door Freezer
Vaporization (liquid turns into vapor) is heat absorption, and liquefaction (vapor turns into water) is heat release. Refrigerators and air conditioners work on the same principle:(Low temperature and low pressure) refrigerant (gas) → compressor → (liquefied) liquid refrigerant (high temperature and high pressure) → radiator (the surface of the refrigerator releases heat) → liquid refrigerant (low temperature and high pressure) → capillary tube → inside the refrigerator The evaporator (the copper pipe around the inner wall of the box) vaporizes, that is, absorbs heat → the temperature in the refrigerator will drop → (gasification) refrigerant (low temperature and low pressure) → compressor. The heat in the box is transported to the outside with the refrigerant as the price of the repeated cycle.
Maintenance knowledge of Top Open Door Freezer
Frost is a bad conductor, and its conductivity is one-350 times that of aluminum. The frost covers the surface of the evaporator and becomes a heat 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 in the box from dropping, which reduces the refrigeration performance of the refrigerator and increases power consumption. It may even cause the compressor to generate heat due to long-term operation, which makes the compressor easy to burn out. In addition, there are various food odors in the frost. If the frost is not defrosted for a long time, the refrigerator will emit a peculiar smell. Generally speaking, when the frost layer is 5mm thick, defrosting is required.
Handling precautions for Top Open Door Freezer
When transporting, you should lift your feet, not grasp the door handle or apply force on the table and condenser, let alone drag on the ground; the maximum inclination angle of the box cannot exceed 45 degrees, and it cannot be placed upside down or horizontally. Damage the compressor or make the refrigerant in the compressor flow into the refrigeration pipeline, which will affect the refrigeration and easily cause the compressor to unsing. During transportation, it is necessary to prevent bumps or violent vibrations, and also to prevent rain and water.
Influence of ambient temperature
An increase in ambient temperature will cause 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 insulation layer of the cabinet will also increase, which will cause a large amount of cold to be dissipated, resulting in shorter downtime, longer response time, and increased power consumption. For ordinary refrigerators based on experimental data analysis, when the ambient temperature reaches 32℃, the power consumption is about 2 times that at 25℃, and the power consumption at 30℃ is about 1.6-1.8 times that at 25℃.