Direct cooling is good. The direct cooling fresh-keeping cabinet is similar to the refrigerator used at home, which is cooled by the copper tube on the inner wall of the refrigerator; The air-cooled fresh-keeping cabinet is similar to the air conditioner at home, which is cooled by the cold air.
Direct cooling type: the natural convection of low temperature on the evaporator surface reduces the temperature in the box, but the temperature is uneven. It is more power-saving and has a large effective volume under the same volume. The advantages of direct cooling technology are low manufacturing cost, good preservation effect and low power consumption, but non drawer freezers sometimes need manual defrosting. Direct cooling type has the advantages of low power consumption, low noise, low price and fresh-keeping of refrigerated food; Slow speed and poor temperature uniformity. Mainly in the Chinese and European markets.
Air cooled: the freezer with air-cooled technology is clean and refreshing without defrosting. The cold air is forced into the box space by the air duct, resulting in circulation and uniform temperature. The automatic defrosting humidity of the freezing chamber is low, the refrigeration is uniform, the effect of accurate temperature control is achieved, and the food will not freeze together, greatly reducing the phenomenon of cross smell.
Its disadvantage is that the cost of air cooling technology is large and the power consumption is high; The food is easy to dry and dehydrate, and is suitable for use in humid areas. The power consumption is higher than that of direct cooling type, and the effective volume is small under the same volume. The air-cooled type has the advantages of fast freezing speed, no frost, food preservation and good temperature uniformity; However, the power consumption is large, the noise is high and the price is high.
