There is a temperature difference between the cold room of the refrigerator and the outdoor. When the refrigerator door is opened many times, hot air will condense when it meets cold air. There is a sewer in the refrigerator, and the condensed water will flow to the water tray above the compressor through the sewer. Due to the high temperature generated by the operation of the compressor, the water in the water pan will evaporate. Therefore, there is no water in the refrigerator. If the water becomes ice, it may cause ice blockage and affect the use.
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Precautions for refrigerator use:
1, refrigerators and freezers cannot be used as refrigeration equipment: the room temperature is high in summer. In order to reduce the indoor temperature, some users open the refrigerator door to let the cold air in the box escape, thus reducing the indoor temperature. This practice is harmful.
According to the law of thermodynamics, in the process of refrigerator refrigeration, the heat of condenser is the sum of the heat absorbed by evaporator and part of the energy generated by compressor operation, and the room temperature can only increase without decreasing. In addition, when the refrigerator is opened for a long time, a thick frost layer will easily form on the surface of the evaporator, and the continuous operation of the compressor will also cause overheating and combustion, which will seriously affect the service life and performance of the refrigerator.
2. Domestic refrigerators and freezers can't store medicines and vaccines: Because the storage of medicines and vaccines requires strict temperature, domestic refrigerators are affected by the environmental temperature and the amount of food stored, and sometimes the temperature in the box fluctuates greatly, which can't meet the temperature requirements for the storage of medicines.
3. Food will deteriorate if it is stored in the refrigerator or freezer for a long time: the refrigerator uses the method of lowering the temperature to inhibit the reproduction of microorganisms in food, catalyze enzymes and reduce the oxidation rate of food.
However, low temperature can not completely kill microorganisms and prevent enzyme catalysis and food oxidation. Many microorganisms can grow slowly in a low temperature environment below 0℃, and food will deteriorate with the extension of storage time. Therefore, the food stored in the refrigerator should not exceed the shelf life of food.