The flaws of a frost-free refrigerator
Frost-free refrigerator is clean and fresh, the evaporator and food scattered, food will not stick with the evaporator, the cold air system of frost-free refrigerator takes away the excess water in the refrigerator, no water naturally no frost, food will not freeze together. The continuous circulation of cool air in the frost-free refrigerator is filtered by the deodorant system, which keeps the air in the refrigerator fresh for a long time and greatly reduces the signs of food cross-smelling.
Although the air-cooled refrigerator is not perfect, food is easy to dry out and lack of water, because there will be cold air circulating inside the refrigerator, which will make the air humidity in the refrigerator become low. If some food is not isolated with plastic wrap or crisper, it is easy to lack water and be dried. So many air-cooled refrigerators are now designed with smaller storage boxes. In addition to facilitating food induction, it is also designed to slow down the air drying rate of food. The price is more expensive, the noise is a little bigger, the frost-free refrigerator consumes a lot of electricity, the internal structure of the air-cooled refrigerator is larger than the straight ice box, so the manufacturing cost of the product is higher, so it is the same as the air cooled refrigerator with the same brand, usually more expensive than the straight ice box. In addition, air-cooled refrigerators need fans to keep blowing cold air to all corners of the refrigerator, so relatively speaking, the noise will be a little bigger than the straight cold box.
The principle of a frost-free refrigerator
The occurrence of frost layer in a frost-free refrigerator does not mean that frost will not occur in the operation of a frost-free refrigerator, but that a frost-free refrigerator has a timely defrosting effect, so that we do not find frost layer in a common refrigerator. On the composition of defrosting system of frost-free refrigerator. Defrosting time device, calculate the compressor 17-24 hours after the cumulative disconnected compressor power supply and to the evaporator, water tank heating wire power supply. Evaporator heating wire, evaporator heating defrosting. Connect the sink heating wire, connect the sink heating defrosting. Defrosting temperature controller to control the temperature of defrosting. Bimetallic sheet or temperature insurance, a precious device to prevent defrosting thermostat failure.
How it works, defrosting timeter accumulates the compressor for 17-24 hours and then stops the power supply to the compressor and circulating fan, as well as the power supply to the evaporator and the heating wire of the tank through the defrosting thermostat and temperature safety. Disconnect the heating wire when the defrosting thermostat detects a contact critical point (the temperature at which the defrosting thermostat is located) (the temperature insurance will overheat if the defrosting thermostat reaches a contact critical point). This completes the defrosting process. The defrosting process then returns to the compressor with a delay of a few minutes to the circulation fan.
