1. Direct cooling type. The low temperature natural convection on the evaporator surface reduces the temperature in the tank, but the temperature is uneven. The utility model saves electricity, and the effective volume is large under the same volume. The advantages of direct cooling technology are low manufacturing cost, good fresh-keeping effect, low power consumption, slow speed, poor temperature uniformity and high manufacturing cost;

2. Air cooled. The air-cooled cabinet does not need defrosting and is clean and fresh. The air conditioner is forced into the space of the cabinet by the air duct, resulting in circulation and even temperature. Cold Room

Automatic defrosting has low humidity, uniform cooling and accurate temperature control, which is suitable for use in humid areas. The power consumption is higher than that of direct cooling type, and the effective volume is smaller under the same volume.

The air-cooled type has the advantages of fast cooling speed, good temperature uniformity, but large power consumption.