Direct cooling, air cooling and mixed cooling, do you know the "refrigeration mode" of refrigerator?

Direct cooling, air cooling and mixed cooling, do you know the "refrigeration mode" of refrigerator? What basic functions do you attach importance to? General key requirements include: 1, freezing capacity; 2, moisturizing and hydrating refrigeration; 3. Antibacterial and deodorizing; 4. Auxiliary function requirements after noise value dB subdivision: 1, temperature control is relatively stable; 2. Change greenhouses; 3. Size; 4. Modeling design and materials; 5. Division of indoor space; 6. Ice making system software.

After selecting the required functions, let's talk about the "refrigerator refrigeration mode" of the refrigerator! At present, there are three main refrigeration modes of refrigerators: direct refrigeration, air cooling and mixed refrigeration. Direct-cooling refrigerator, also known as "frosted refrigerator", refers to the traditional double-door "economical and practical refrigerator", which has low technology content, so it is cheap and good; In addition, the direct-cooling refrigerator is prone to the problem of temperature control and prohibition, that is, the temperature near the inner cavity of the air-conditioning evaporator is low, and even frost may occur. However, this will also cause the ingredients on the wall to be frozen.

Air-cooled refrigerator, also known as "air-cooled frost-free refrigerator", has complex internal structure and high technical content, and the natural price is generally more expensive, but the refrigeration speed is faster and the temperature control is accurate; On the other hand, the "air supply mode" of the air-cooled refrigerator will accelerate the evaporation of water in the ingredients, so the stored food must be wrapped with plastic wrap or film bag to keep the water in the ingredients. The mixed cooling refrigerator directly cools and cools, which has the practical effect of refrigeration; Refrigeration is air-cooled, air-cooled, frost-free, accurate temperature control, high-tech content, and the price is higher than the first two.

Ps: Refrigeration cycle of air-cooled refrigerator The refrigeration cycle of air-cooled refrigerator can be divided into single cycle, cycle system and three cycles (matching single system software, installing two systems and three systems), and their key analytical standard is "the number of air-conditioning evaporators", that is, whether there are air-conditioning evaporators in the refrigeration and freezing area. In addition, many refrigeration methods of refrigerators describe "double air circulation system", but we must pay attention to: multi-channel air duct circulation system ≠ multi-channel refrigeration cycle! There are only two filters in the double air duct, and there is only one air conditioner evaporator in a high probability, so there is a possibility of odor problems (I am not sure, please consult customer service or see the instructions in the manual).

Let's take a look at the system partition of the refrigerator, which can also be regarded as the "refrigerator opening method"! At present, there are mainly one door, two doors, three doors, opposite doors and multiple doors (including cross-opposite doors, French doors and Japanese doors) in the market. ).

It should be noted that the refrigerator door will switch between hot and cold, and the refrigerator door is often opened and closed, so the temperature here is unstable. Generally, the temperature at the door of the refrigerator is 2-3℃ higher than that inside the shelf. Therefore, the refrigerator door is suitable for storing and placing food materials that are easy to take and put, difficult to deteriorate and must be swallowed quickly, such as raw eggs, opened drinks, apple sauce, curry sauce, oil-consuming food, spices and so on.

If it is a refrigerator with a large "total area of cold and heat exchange" (for example, a refrigerator with opposite doors, but the external air is more cost-effective), it is difficult to keep the internal structure of the refrigerator constant, and it will increase energy consumption; In fact, the best way is to "multi-door" refrigerator. Scientific and reasonable disk partition can distinguish cold storage, chilled fresh, slightly frozen, frozen and other services to the greatest extent, which is also more conducive to the classified storage of ingredients and reduces the area of cold and heat exchange. For the price, the greater the necessary function, the higher the price. If you really pursue the perfect brand name, then the price is even higher. What kind of refrigerator can I choose?