Why does the air-cooled refrigerator freeze several times faster than the direct-cooled refrigerator?

The air-cooled refrigerator blows cold air to every corner of the refrigerator through the fan, so it can be cooled quickly and evenly. Compared with the direct cooling refrigerator, the air-cooled refrigerator can be cooled evenly in a short time. For example, my Omar air-cooled refrigerator can easily increase the freezing speed to two or three times that of the traditional refrigerator by improving the wind speed and air-conditioning circulation efficiency, which is impossible for the direct-cooled refrigerator.