A class of semiconductor car refrigerator, its principle is to rely on the electronic chip refrigeration, the use of special semiconductor materials constitute the P-N junction, the formation of thermocouple pairs, resulting in the Peltier effect, i.e., through the DC refrigeration of a new type of refrigeration method. Refrigeration temperature range of -5 to 65 degrees. The advantages of this refrigerator is both cooling and heating, environmental protection, no pollution, small size, low cost, no vibration, noise, long life. The disadvantage is that the refrigeration efficiency is not high, the refrigeration temperature is affected by the ambient temperature, refrigeration can not reach below zero degrees, and the capacity is small.
Another kind of compressor car refrigerator, compressor is the traditional refrigerator of traditional technology, refrigeration temperature is low, for -18 degrees 10 degrees. Refrigeration efficiency is high, can make ice, freshness, volume and large capacity, is the mainstream direction of the future development of the car refrigerator. But this refrigerator weight is heavier, compared with the semiconductor refrigerator more power consumption, higher prices. Compressor car refrigerator compressor in the world's main place of origin for Germany and Japan, the domestic high-grade compressor car refrigerator compressor is mainly Germany, the quality is better.
At present, the electronic refrigerator using semiconductor electronic refrigeration and heating, the principle is to use DC current flow through the semiconductor refrigeration chip, so that the heat from the cold end of the chip to the hot end of the transfer (Parsons Pasteur effect) through the cooling fan to improve its effect. In the function of refrigeration, the temperature of the electronic chip is able to reach 5 degrees, the temperature of the chip is conducted to the inner wall of the refrigerator due to the depletion of the temperature is often difficult to reach 5 degrees. This temperature is the current electronic refrigeration can achieve the low temperature threshold.
Electronic refrigerators are usually able to cool and heat, the so-called cooling to 5 degrees is an indication of the quantitative, if the surrounding temperature is relatively high, the refrigerator cooling degree and the ambient temperature temperature difference is generally 15 degrees. A good quality dual fan automotive refrigerator can reach a temperature difference of 20 degrees. Refrigerator heating temperatures are usually able to reach 65 degrees.
Hot and cold refrigerators use the car cigarette lighter as a power source, a 15-liter hot and cold refrigerator consumes 35-40 w. This is equivalent to the power consumption of a car light bulb. When the engine is turned on the battery starts charging the refrigerator. The battery cuts off when the engine is turned off. The better hot and cold refrigerator with low voltage protection device, when the battery power is less refrigerator began to alarm, can effectively protect the car battery.
And from the compressor enterprise refrigerator situation, at present the world's many high-grade automobile has been used in the OEM way embedded supporting compressor car refrigerator, which is the real sense of the car refrigerator.
Europe and the United States and Japan, South Korea, etc., should be many professional enthusiasts and the needs of the defense forces, has begun to use the fully enclosed compressor car refrigerator, its cooling temperature can reach minus 18 degrees, and can be segmented temperature control. This compressor refrigerator use is the traditional reciprocating compressor and rotary compressor. Even if the refrigerator is arbitrarily overturned will not cause damage to the compressor. The compressor is fully enclosed, fluorine-free, maintenance-free technology, so that the car refrigerator reversed over the normal operation of many car rallies, cross-country races use this refrigerator.
Compressor refrigerators have become standard in some northern armies in Europe and in the Middle East, where they have unique advantages in terms of resistance to bumps and tilt angles. At present, the compressor car refrigerator is now gradually replacing the traditional electronic refrigerator, and the domestic market is also in the process of gradual acceptance.
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