A car refrigerator is a product used for cooling in the car, which can make people feel a little cool in the hot summer. Car refrigerator products on the market are generally rechargeable, that is, in terms of energy supply, they can use either household 220V AC or vehicle 12V DC, or they can continue to work through their own power storage function without power supply. It is a good solution to the disadvantage that the car refrigerator cannot be used without power failure. Next, let’s take a look at the encyclopedia of the car refrigerator with me.
1 Introduction to Car Refrigerator
Car Refrigerator is a refrigerator that can be carried on the car. It is a new generation of refrigeration and refrigeration appliances popular in the international market in recent years, and it is the continuation of household refrigerators. . There are two main types of car refrigerators on the market, one is a semiconductor car refrigerator, which relies on electronic chips for refrigeration, its cooling effect is not obvious, and the cooling speed is slow, but it has the advantages of energy saving, environmental protection, no noise, and light weight. The other is the compressor car refrigerator. The compressor is a traditional technology of traditional refrigerators. The cooling temperature is low, generally -18 degrees to 10 degrees. However, the disadvantage is that the price is high, the cooling cannot be continued without the on-board power supply, and it is bulky and inconvenient to carry.
2 The principle of the car refrigerator
1. The principle of the semiconductor car refrigerator
The semiconductor car refrigerator relies on the refrigeration of the electronic chip. Peltier effect, a new type of refrigeration method by direct current refrigeration, the refrigeration temperature range is -5 to 65 degrees. The advantages of this refrigerator are that it can both cool and heat, is environmentally friendly, pollution-free, small in size, low in cost, free from vibration and noise during operation, and has a long service life. The disadvantage is that the refrigeration efficiency is not high, the refrigeration temperature is affected by the ambient temperature, the refrigeration cannot reach below zero, and the capacity is small.
The principle of the Peltier effect is that the charge carrier moves in the conductor to form a current. Since the charge carrier is in different energy levels in different materials, when it moves from a high energy level to a low energy level, it will release excess heat. On the contrary, it needs to absorb heat from the outside, that is, cooling.
2. Principle of compressor car refrigerator
The compressor car refrigerator adopts the refrigeration technology of traditional refrigerators, which can continuously circulate through the compression, condensation, expansion and evaporation of the internal refrigerant. process to lower the temperature inside the refrigerator. Because its core component is a compressor, it is much more expensive than a semiconductor refrigerator. The compressor car refrigerator has high refrigeration efficiency, its cooling capacity can reach -18 ℃, it can make ice, keep fresh, and has a large volume. It is the mainstream direction of the future car refrigerator development.
3 Differences between car refrigerators and household refrigerators
1. Different anti-vibration performance
Cars are constantly vibrating during driving, and good anti-vibration and anti-shake performance can ensure the normal use of car refrigerators . The shock resistance of car refrigerators is very good, and the internal components can operate normally on bumpy roads, while the shock resistance of household refrigerators is much worse.
2. Different power sources
Household refrigerators need to be connected to 220V AC power for normal use, while car refrigerators can be used by connecting to a cigarette lighter in the car. When the car is turned off, the battery will continue to supply power to the refrigerator. At this time, the battery protection can ensure that enough power is retained in the battery to ensure the normal ignition of the car, thereby protecting the safety of the battery.
3. Different electromagnetic interference capabilities
There are many electronic products in the car, and various electromagnetic interferences will affect the normal work. When the electronic control module of the car refrigerator works, it does not interfere with the electromagnetics of other electronic products in the car, and it will not affect the normal use of the car battery. Household refrigerators have relatively large power and have certain electromagnetic interference capabilities, which will affect the operation of electrical appliances.
4. Anti-fall protection
When the compressor is tilted too much, continuous work will cause damage to the compressor and affect its service life. Household refrigerators generally cannot be tilted. As long as a certain angle of tilt occurs, the compressor will stop working. When the car refrigerator is in use, a slight tilt will not affect the normal work. When the tilt reaches more than 45°, it will automatically stop working to protect the compressor.
5. Different volumes
The volume and volume of household refrigerators are huge, generally around 150-250L, which can store a large number of food items. Car refrigerators are small in size, generally around 5-50L, and can only be used to store a small amount of food items.
4 Car refrigerator purchase
1. Look at the performance
The most important thing about the car refrigerator is the cooling function. The electronic semiconductor car refrigerator has a minimum cooling of 5°C, and it takes 1 to cool from 20°C to 0°C. hours or so. The compressor refrigeration car refrigerator can be as low as -18°C, and it takes about 20 minutes to cool from 20°C to 0°C.
2. Look at the sealing strips
When purchasing a car refrigerator, you should choose products from regular manufacturers with fashionable design, sophisticated materials and high ease of use. When purchasing a car refrigerator, you need to pay attention to the feel of the refrigerator sealing strip. High-quality sealing strips have the characteristics of high flatness and high toughness, which are important appearance characteristics to ensure the refrigeration and refrigeration performance of the car refrigerator. If the quality of the sealing strip is very poor , then, no matter how good other aspects are, it is no use.
3. Look at the volume
The volume of the car refrigerator is big or small, and the capacity is not the bigger the better. Consumers should choose according to their actual needs. Generally, a small-volume refrigerator is more suitable to be placed between the two front seats, and a large-volume car refrigerator is more suitable to be placed in the trunk. It is recommended to choose a product with a flip-up door for the car refrigerator placed between the front seats, otherwise it may face the phenomenon that it cannot be installed or cannot be opened after installation.
4. Look at the function
Car refrigerators can be roughly divided into two categories: single cooling and heating and cooling. Among them, the single-cooling compressor car refrigerator is specially developed for refrigerating or even temporarily freezing food in summer, and has the characteristics of strong cooling power and low power consumption. The heating and cooling car refrigerator has both cooling and heating functions at the same time, and can be used in winter and summer. However, the cooling capacity of the heating and cooling car refrigerator is much inferior to that of the single-cooling compressor car refrigerator. Consumers can choose according to their own needs. actual needs to be selected.
5. Look at the brand
The quality of the refrigerator determines the service life of a refrigerator, and the better the quality of the car refrigerator, the longer the service life. The product quality of big brands is often guaranteed, the after-sales service is better, the production technology is mature, and the price positioning is reasonable. Consumers can choose the right car refrigerator according to their actual needs.
How to use the car refrigerator
1. After purchasing the car refrigerator, first prepare a multi-function socket, which can guarantee your refrigerator, car lights, hands-free equipment and so on at the same time. It is best to be equipped with a power converter to prevent insufficient power supply.
2. Then install the car refrigerator. Now most car refrigerators on the market are installed and used foolishly. Just connect the power cord to the car refrigerator and the power supply. It should be noted that the refrigerator needs to be placed horizontally to avoid compressor shutdown due to the angle problem of the compressor car refrigerator.
3. After the power is turned on, you can turn on the power switch of the car refrigerator to set the temperature. When the car refrigerator is cold, you can put the items that need to be refrigerated.
6 Car refrigerator maintenance
1. Regular inspection
Because the car refrigerator is a product that uses electricity, so even if the power consumption is not large, it is necessary to regularly check the working stability and performance of the car refrigerator. Habits of circuit appearance. We should check the working status of the car refrigerator (cooling capacity, cooling noise, sealing performance, etc.) every 30 days or so. In addition, pay attention to whether there are any bumps, scratches and damages on the wires and exterior parts of the refrigerator.
2. Cleaning
In addition to regular inspection of the car refrigerator, keeping the refrigerator clean is also one of the important tasks in maintaining the car refrigerator. When cleaning the car refrigerator, first use a neutral detergent, then use a soft cloth to clean the outside of the refrigerator, then wipe the refrigerator seal with water and a soft cloth, clean the inside of the refrigerator with a neutral detergent and a soft cloth, and finally use water and a soft cloth. Clean the inside and outside of the car refrigerator twice.
3. Storage
When the car refrigerator is no longer used for a long time, the refrigerator should be removed, and the refrigerator should be cleaned according to the above cleaning methods, and then dried in the shade, and then put in again. packing box. Finally, put it in a cool, dry and ventilated environment for storage, so as to ensure the use effect when the car refrigerator is reactivated next year.
7 Troubleshooting of Car Refrigerator
1. The refrigerator is noisy
The problem of loud noise in the semiconductor refrigerator is generally the fan. The fan directly affects the cooling effect of the semiconductor refrigerator. If the positioning and detail processing are not in place, there will be a problem of loud noise. The compressor also produces noise, so the compressor refrigerator must be relatively loud, but there are also compressor refrigerators that have done a good job in compressor noise reduction technology. If the noise is found, first check the fan, the noise of the fan is naturally loud when it is aging. The second is to check the compressor (if there is a compressor), if the sound of the compressor is abnormal, you have to find the manufacturer to repair it.
2. No cooling
For semiconductor refrigerators, first check whether the fan is running. Second, check the product current. If it’s close to 5 amps, it’s safe to say the Peltier, PCB or cutout is fine. If there is no current, check the voltage at the connection of the Peltier element on the PCB. Then, if it shows 12V or higher, then the PCB and thermal fuse are good, and it is recommended to replace the Peltier element. If there is no voltage, check the fuse to determine whether it is the PCB or the fuse is broken. If these aspects are checked and there is no problem, you have to find the manufacturer for repair. Of course, to check these items, you must have tools. If you don’t have tools, you can only be in a hurry. Compressor refrigerators are not recommended for in-depth inspections, because the technology of the compressor is more complicated.
3. The machine has been refrigerating without stopping
This situation mainly occurs in customers who shop online, because the courier company is not responsible for the delivery of online shopping The box is broken, that is to say, the cold air has been leaking out, and the refrigerator has not reached the predetermined temperature, so it can only keep cooling. If the crack is not big, you can seal it with glue or something by yourself. If the crack is too large, it is probably not scrapped and has to be repaired by the manufacturer. Therefore, I remind online shopping friends that you must check carefully when you receive the goods. Don’t feel that checking in front of the delivery person is distrusting him. In fact, this is completely to protect your own rights and interests.
4. High power consumption
Unless you buy cheap or imitation products, regular brand products focus on power consumption when they are designed and produced. Not going anywhere. Another reason is that the refrigerator does not have a low-voltage protection device. After the car is turned off, you forget to turn off the power of the refrigerator. The refrigerator has been working all the time, and it has been consuming the power on the car battery, which directly causes the car to fail to ignite when it is started again. It is recommended to buy a car refrigerator with a low voltage protection device, or buy a voltage protection device, or remember to directly power off the refrigerator after parking.
