The first category is a relatively early product. It may not be appropriate to call it a refrigerator, because it does not have a refrigeration function, but only has a heat preservation function. When using it, you must put the items to be refrigerated in the refrigerator and put them in the incubator. There are ice packs. If you put it in an ice pack, it can keep frozen for a short time. The advantage of this kind of refrigerator is that it does not consume electricity. You must know that the electricity in the car is exchanged for oil, and the price is relatively low. The disadvantage is that it can’t last for a long time. Thermal insulation and the space are small.
The second category is semiconductor car refrigerators. The cooling temperature range is -5 to 65 degrees. The advantage of this method is that it can be used for both cooling and heating, and its capacity is small.
Semiconductor refrigerators have two functions: cooling and heating: in terms of refrigeration, it is generally 10-15°C below the ambient temperature, but its heating temperature can be as high as 65°C; in addition, because it does not use compressors, semiconductor refrigerators also save energy Environmental protection, no noise, lightweight and other advantages.
The advantage of this kind of semiconductor electronic refrigeration car refrigerator is that it is relatively cheap and convenient to use.
Semiconductor electronic refrigeration is also called thermoelectric refrigeration, or thermoelectric refrigeration. It is a refrigeration method that utilizes the "Peltier effect" and is called the world's three major refrigeration methods along with compression refrigeration and absorption refrigeration.
The third category is compressor car refrigerators, which are large in size and will be the mainstream direction of future development of car refrigerators. The disadvantage is that the weight is heavier and consumes more power. The compressors of domestic high-end compressors and automobile refrigerators are mainly German, and the quality is better.
Compressor refrigerators have only a refrigeration function, their refrigeration capacity can reach -18℃, can control the temperature in sections, is not easy to be damaged, and can be stably and effectively refrigerated. In many high-end cars and standard cars, compressor refrigerators are used in the market. The price is more than 10 times that of semiconductor refrigerators of the same volume.
The features are：
1. It can be applied to power supplies of various voltages, whether it is 12VDC or 24VDC, the built-in power supply device of the compressor car refrigerator can automatically recognize different voltages and adjust accordingly.
2. The medium-sized compressor car refrigerator has the characteristics of convenient transportation and excellent internal and external dimensions.
3. The compressor car refrigerator is most suitable for off-road vehicles, RVs, trucks, buses, yachts, and boats. If necessary, they can also be safely secured in the car.
4. While the advanced dedicated compressor for car refrigerators provides super cooling power for our freezer, its energy-saving features and silent function also allow our customers to get supreme enjoyment from it.
The compressor car refrigerator is composed of a compressor, condenser, filter drier, capillary tube, evaporator, and other components.
The rechargeable type means that both household 220V AC power and vehicle 12V DC power can be used for energy supply, and it can also continue to cool through its own power storage function when there is no power supply, which solves the problem of car refrigerators. Leave the disadvantages of power outage use.