Most refrigerators use alternating current, but some refrigerators require direct current. The 12V DC Freezer can be seen from the name, and it uses alternating current.
The dry saturated gas of the refrigerator refrigerant is compressed into high temperature and high-pressure superheated refrigerant vapor when passing through the compressor and enters the condenser through the exhaust pipe of the expansion valve piston of the compressor, and the high temperature and high-pressure refrigerant vapor is in the condenser. The medium is condensed into a high-pressure and low-temperature liquid. After this liquid enters the refrigerator filter, it passes through the capillaries and becomes a low-temperature and low-pressure refrigerant vapor with a moderate enthalpy throttling in the capillaries. After this, the low-temperature and low-pressure refrigerant waits. A large amount of boiling in the pressurized evaporator absorbs external heat and becomes saturated vapor, which realizes the refrigeration process of the refrigerator, and finally, the refrigerant is sucked in by the compressor to perform the cold cycle again.
When we bought refrigerators, we saw very different styles. So when we use them because there is a more style, when we use them, there will be more use effects and business turnover will increase.
Also, the mini car freezer uses mostly direct current instead of alternating current. chinafreezers.com