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As you all know, refrigerators are generally divided in […]
As you all know, refrigerators are generally divided into two types, direct cooling and air cooling, but the detailed differences between the two are often unclear. Some precautions in the use of different products are always easy to make mistakes. Do you want to remove the cream again? Today, I will use this question as the starting point to share some practical knowledge of direct cooling refrigerators and air-cooled refrigerators.
First of all, the two types of refrigerators are essentially different in terms of refrigeration principles.
The old-fashioned refrigerators used in the home are all directly cooled. The principle of this type of refrigerator is to cool by an evaporator. The evaporator is in the freezer and directly contacts the inner wall of the freezer for heat exchange. Because the evaporator is made of S-shaped Composed of refrigeration coils, the cold air flow from the compression mechanism passes through the pipes, so the temperature of the pipes is very low. These pipes indirectly reduce the temperature of the inner wall of the refrigerator to realize heat exchange and gradually reduce the temperature of the refrigerator. When the air in the refrigerator encounters a higher temperature When the inner wall of the refrigerator is low, frost will form on its surface. The frost will affect the efficiency of heat exchange and reduce the refrigeration capacity of the refrigerator. Therefore, direct-cooling refrigerators must be defrosted manually, which brings trouble to many users.
Look at air-cooled refrigerators. This type of refrigerator uses air for cooling. When high-temperature air flows through the built-in evaporator (separated from the inner wall of the refrigerator), the two directly exchange heat due to the high air temperature and the low temperature of the evaporator. The temperature will drop, and at the same time, cold air will be blown into the refrigerator and circulate continuously. Due to different principles, air-cooled refrigerators will not frost like direct-cooled refrigerators, and the interior will not always be wet, and food will not stick to each other. In addition, air-cooled refrigerators usually have their own intelligent defrosting function, so manual defrosting is completely unnecessary. However, in order to keep the refrigerator clean and healthy, take out the ingredients from the refrigerator from time to time, and use professional refrigerator cleaning agent and soft cloth to clean the inside and outside of the refrigerator. Wiping is still necessary.
Secondly, both have their own advantages.
Although direct-cooling refrigerators may form frost, they also have many advantages. For example, direct-cooling refrigerators are relatively inexpensive due to their low manufacturing threshold and low cost; and because of their relatively simple structure, the failure rate of direct-cooling refrigerators is usually also Low; at the same time, since there is no continuous circulation of a large amount of cold air like air-cooled refrigerators, direct-cooled refrigerators are not easy to be pulled dry by cold air, and the food preservation effect is relatively better, and the noise is relatively small.
The advantages of air-cooled refrigerators are also obvious. The circulating cold air is filtered by the deodorizing system, and the internal odor will remain fresh for a long time without the pungent "refrigerator smell". Therefore, the air in the air-cooled refrigerator is relatively fresh and clean, and the ingredients are relatively difficult. In terms of refrigeration performance, the accuracy of temperature control of air-cooled refrigerators is much higher than that of direct cooling products.
In recent years, air-cooled refrigerators have made rapid progress in technological innovation. Many major brands have launched high-end products that integrate performance, design and intelligence, and have promoted air-cooled refrigerators to become the mainstream of the market. But in any case, these two types of refrigerators have their own advantages and disadvantages. How to choose and buy depends on the actual needs of consumers and choose products that suit them.