How many types of refrigerators are there? What are the refrigeration methods?

Hello! Refrigerators with direct cooling or frost. The freezer is directly surrounded by an evaporator, or there is an evaporator in the freezer, and an evaporator is arranged in the upper part of the refrigerator, and the evaporator directly absorbs heat and cools down.

This type of refrigerator has a relatively simple structure, low power consumption, and good freshness preservation effect, and requires regular defrosting of the refrigerator freezer.

Frost-free refrigerators, also known as intercooled or air-cooled refrigerators. There is a small fan inside the refrigerator that forces the air flow in the box, so the temperature in the box is uniform, the cooling speed is fast, and it is easy to use. However, due to the high power consumption caused by the defrosting system, and the fan in the box will make the refrigerator noisy, and at the same time, it is easy to dry the food, and the manufacturing of the refrigerator is relatively complicated.

Fluorine-free refrigerators, the previous refrigerators used R11 and R12 to make foaming agents and refrigerants, after Freon leaked into the air, after being irradiated by ultraviolet rays in the sun, a chemical reaction occurred, causing damage to the ozone layer and threatening human health and biological growth. In order to protect the atmospheric environment on which human beings depend, we have found a substitute for freon, R600A, a refrigerant refrigerator that refrigerates faster and is more energy-efficient.

It depends on how to divide the large and small single door, double door, triple door with freezer, and there are also those without freezer for refrigeration.

Refrigeration? Isn't it all refrigeration through refrigerant with a compressor? Internally, there are direct cooling and indirect cooling, the difference is that the intercooled type has a small fan blowing inside.

The three refrigeration methods of refrigerators are: direct cooling, air cooling, and hybrid refrigeration.

Direct cooling: It is natural evaporation and heat absorption, and the hot and cold air circulate naturally in the refrigerator, with low cost, good fresh-keeping effect and low power consumption. Cons:

When the refrigerator is full, poor circulation occurs, resulting in uneven cooling. At the same time, the water vapor will condense into frost in a cold place, and sometimes manual defrosting is required.

Air cooling: It is forced by the built-in fan, which avoids the shortcomings of the direct cooling method, and does not need to be defrosted, clean and refreshing, refrigeration is uniform, and the effect of precise temperature control is achieved, and the food will not freeze together, which greatly reduces the phenomenon of cross-flavoring. Cons:

Air cooling technology is more expensive and consumes more electricity.

Mixed refrigeration means that the freezer is air-cooled and the refrigeration is directly cooled. It combines the advantages of direct cooling and air cooling.

Which way is better depends on the purpose of the refrigerator and the comprehensive consideration of the individual.

When buying a refrigerator, we must first pay attention to the parameters and configuration of the product. The function of the refrigerator is to refrigerate and store food to achieve the effect of prolonging freshness, so for the refrigerator, its refrigeration method is very important. At present, there are three main refrigeration methods of refrigerators: direct cooling, air cooling, and mixed cooling

Direct cooling refrigerator: The refrigeration method of the old refrigerator basically adopts the direct cooling type, which mainly reduces the temperature in the refrigerator through heat absorption by the evaporator, and realizes natural convection of the dishes in the refrigerator. Direct cooling refrigerators have a simple structure and a low price.

However, the disadvantages of the direct-cooling refrigerator are also more prominent, the temperature of the refrigerator is uneven, the evaporator in the freezer is easy to frost, and the defrosting is more troublesome.

Air-cooled refrigerator: The working principle of air-cooled refrigerator is to add a fan at the heat-absorbing evaporator, so that the air in the refrigerator can be refrigerated, and the cold air is forced to circulate and refrigerate. Compared with the direct cooling refrigerator, the air-cooled refrigerator has an automatic defrosting device, which does not need to be defrosted by yourself, but the cold air circulation will take away the moisture in the refrigerator, and its moisturizing effect is not as good as that of the direct cooling refrigerator.

Mixed cooling refrigerator: Mixed cooling refrigerator is a combination of direct cooling and air cooling, in the refrigerator to take direct cooling for cooling, in the freezer to take air cooling refrigeration, mixed refrigerator combines the advantages of direct cooling refrigerator and air cooled refrigerator, can effectively solve the pain points of manual defrosting, easy air drying of ingredients. At the same time, the structure of the hybrid refrigerator is complex, and the manufacturing cost is relatively high.

At present, most refrigerator products on the market use air-cooled refrigeration, in comparison, the ** of air-cooled refrigerators is not too high, and the effect of air-cooled refrigerators is better and does not need to be defrosted. If you have more pursuit of quality of life and a loose budget, it is recommended to choose a mixed refrigerator to keep fresh and refrigerated.

The refrigeration method of refrigerator can be divided into direct cooling, air-cooled and direct cooling air-cooled mixture. The direct cooling refrigerator has low operating noise and good fresh-keeping effect, but the refrigeration effect is uneven and requires manual defrosting; The air-cooled refrigerator refrigerates quickly and evenly, with automatic defrosting, but the operation noise is slightly louder, and the internal humidity is not too good; The direct-cooled air-cooled hybrid combines the advantages of both direct-cooled and air-cooled, but is usually more expensive. It is recommended to consider the advantages and disadvantages of the three refrigeration methods before making a choice.

Direct cooling

The refrigeration of the direct-cooling refrigerator is achieved by the evaporator cooling pipe attached to the inner wall of the refrigerator to absorb heat, and this refrigeration principle leads to the fact that the food close to the cooling pipe can maintain a lower temperature, but the food far away from the cooling pipe can not reach the same low temperature, the overall refrigeration coverage is uneven, the refrigeration speed is slow, and the refrigerator is easy to produce "refrigerator smell". In addition, the direct cooling refrigerator will frost after a long period of use, and it needs to be manually defrosted, which is more time-consuming and laborious. Of course, the advantages of the direct-cooling refrigerator are also more obvious, because the internal structure of the refrigerator is simple, only the compressor and evaporator work during refrigeration, so the working noise is very small, and it has a bright energy-saving and power-saving performance; In addition, the air humidity inside the direct-cooling refrigerator is well maintained, which is not easy to cause food moisture loss, which is a good hand for keeping fruits and vegetables fresh.

Air-cooled

When the built-in evaporator generates cold air, the rotation of the fan drives the cold air to form a circulating flow inside the refrigerator, which quickly brings the cold air into each room, and the refrigeration is fast and uniform. In addition, the air-cooled refrigerator has an automatic defrost function, which has a larger capacity than the direct cooling type, and the interior is not prone to "refrigerator smell". On the disadvantage, the built-in fan of the air-cooled refrigerator will rotate continuously during cooling, resulting in greater noise and power consumption.

Although the cold air can fully cover all compartments, it is also easy to cause the food to dry out, and the advantages and disadvantages are obvious.

Direct cooling and air-cooled hybrid

Direct cooling and air-cooled hybrid type, also known as mixed cooling type, adopts a hybrid refrigeration method, combining the advantages of direct cooling and air cooling. The hybrid refrigerator adopts direct cooling refrigeration in the cold room, which gives full play to the excellent freshness of the direct cooling type with high humidity, protects the internal moisture of vegetables and fruits, and allows users to enjoy moist and fresh fruits and vegetables at all times. In the freezer, the hybrid refrigerator adopts air-cooled refrigeration, which gives full play to the characteristics of air-cooled refrigeration and no frosting, quickly freezes meat, locks in freshness and nutrition, and is not easy to stick between ingredients.

In addition, the refrigerator and freezer compartment of the hybrid refrigerator adopt independent dual circulation, which isolates the possibility of food cross-flavoring, and combined with intelligent dual-zone temperature control, the use experience is very good.

Direct cooling refrigeration type ** is cheap, relatively energy-saving, and has good fresh-keeping and moisturizing performance, but the temperature is uneven, and it needs to be defrosted frequently, which is suitable for the relatively dry north. The air-cooled refrigeration type has low humidity and more uniform cold temperature, and the food is easy to dry and dehydrate, but the power consumption is high and the effective volume is small. How to buy a refrigerator 1, the size Xiaoice of the refrigerator is not the larger the better, but to buy according to personal needs.

Generally, a family of 3-4 people can choose a refrigerator with a specification of 150-200 liters, and if there are more than 5 family members, you should choose a refrigerator with a large capacity (about 300 liters).2. Freezing capacity The freezing capacity of the refrigerator is very important, which is one of the important criteria for us to choose a refrigerator, if the freezing capacity is not good, the food will spoil. 3. When choosing an air conditioner for air cooling and water cooling, it is also necessary to look at the refrigeration method of the air conditioner, such as:

Air-cooled, direct cooling, air-cooled refrigerator is like an air conditioner blowing, which can ensure that food is fresh, frozen evenly, and not easy to frost. Water cooling, also known as direct cooling, relies on air convection to release cold air, which has a good refrigeration effect, but it is easy to cause frost in the refrigerator and is not easy to clean.

At present, the refrigerator refrigeration methods on the market are mainly air cooling, direct cooling and mixed cooling. Direct cooling refrigerators, also known as "frost" refrigerators, have low cost, good preservation, and are mostly used in two-door refrigerators, which are economical and practical. However, the inside loves frost and needs to be manually removed, the refrigeration effect is poor, and the temperature distribution is uneven; Air-cooled refrigerator, frost-free, fast refrigeration speed, accurate temperature control, but the disadvantage is that vegetables are easy to be blown dry, and food is easy to carry flavors; The internal structure of the hybrid refrigerator is direct cooling in the refrigerator room and air cooling in the freezer, which belongs to the mixture of air cooling + direct cooling.

The advantage is that it can avoid refrigeration and drying of vegetables, and also avoid frosting, and the disadvantage is that the cost is high, and it is mostly used in high-end models. If you use it at home, I still recommend buying air cooling, such as Siemens KA92NV90TI, side door, 610L large capacity, inverter, although it is an air-cooled refrigerator, it has multi-dimensional air outlet, 3D water lock freshness, no need to worry about fruits and vegetables being blown dry, and there is no problem with putting it for a few more days.

The three refrigeration methods of refrigerators are: direct cooling, air cooling, and hybrid refrigeration.

Mixed refrigeration means that the freezer is air-cooled and the refrigeration is directly cooled. It combines the advantages of direct cooling and air cooling.

Direct cooling: You can see rows of refrigeration pipes between the drawers of the freezer compartment, and the refrigerator without drawers has these pipes on the outer layer of the freezer compartment. Direct cooling is the earliest refrigeration technology, which has the advantages of simple structure, low cost, and better preservation effect of food that is not easy to dry air, but the disadvantage is that the temperature in the box is not uniform.

There are two main refrigeration methods of refrigerators: direct cooling and air cooling

The direct cooling refrigeration method means that the refrigeration pipe inside the refrigerator is directly in contact with the air in the freezer room, and the heat in the refrigerator is exported through conduction to achieve the purpose of refrigeration. The direct cooling refrigeration method has fast refrigeration speed and good refrigeration effect, but the refrigeration pipe is prone to frost and needs to be defrosted regularly, otherwise the refrigeration effect will be affected.

The air-cooled refrigeration method refers to the refrigeration pipe inside the refrigerator blowing the cold air generated by the condenser into the freezer through the fan, so as to achieve the purpose of refrigeration. The air-cooled refrigeration method refrigerates evenly and is not easy to frost, but the refrigeration speed is relatively slow.

Comprehensive to Tongsun leakage: direct cooling refrigeration method and air cooling refrigeration method have their own advantages and disadvantages. If rapid cooling is required, direct cooling refrigeration can be selected; If you need uniform refrigeration and is not easy to frost, you can choose air-cooled refrigeration.

StillNowadays, most refrigerators use air-cooled refrigeration because of their stable cooling effect, less prone to frosting, and relatively long service life

In addition to the refrigeration method, Kaizhen also needs to consider the refrigeration efficiency, energy consumption and other factors of the refrigerator. It is recommended to choose products with high refrigeration efficiency and low energy consumption when buying refrigerators to achieve the purpose of energy conservation and environmental protection. At the same time, it is also necessary to pay attention to regular cleaning and maintenance of the refrigerator to ensure its refrigeration effect and service life.

There are generally two types of refrigeration methods for refrigerators: direct cooling and air cooling.

Direct cooling is to refrigerate the evaporator inside the Chiwu refrigerator directly in contact with the outside air, so the temperature is more uniform, and the phenomenon of frost can be avoided at the same time. However, direct-cooling refrigerators have a slower refrigeration rate, require frequent defrosting, and consume more energy.

Air cooling is to add a fan inside the refrigerator, through which the air flow is brought into the refrigerator to achieve the cooling effect.

Therefore, if you pay more attention to the refrigeration speed and freshness of the refrigerator, then it is more suitable to choose a direct-cooling refrigerator; Or if you pay more attention to the power saving effect and comfort of the refrigerator, then it is more suitable to choose an air-cooled refrigerator.

Surplus.

There are two types of refrigeration: direct cooling and air cooling, each with its own advantages and disadvantages, as follows:

Direct cooling refrigeration method: Direct cooling refrigeration is a pure use of the built-in evaporator of the refrigerator to condense the water in the air into frost or ice to achieve the refrigeration effect. This refrigeration method has a fast cooling speed and good cooling effect, but at the same time, there are some disadvantages, such as high noise, high power consumption, and easy frosting.

Air-cooled refrigeration: Air-cooled refrigeration is to blow cooled air into the refrigerator by a fan. This refrigeration method refrigerates evenly and keeps the temperature stable, which can effectively avoid frost problems, but there are also some disadvantages, such as relatively slow refrigeration speed and high cost.

At present, there are two main types of refrigerators on the market: compressor refrigeration and absorption refrigeration.

Among these two refrigeration methods, compressor refrigeration refrigerators have the advantages of envy

1.The refrigeration effect is good. Compressor refrigeration refrigerator uses a compressor for refrigeration, which can quickly cool down and maintain a constant temperature, and can maintain a good refrigeration effect even in a high-temperature environment;

2.Low energy consumption. Compared with absorption refrigeration, compressor refrigeration refrigerators are more energy-efficient, and their power consumption is only about half of that of the former of the brother chain;

3.Easy to maintain. The compressor refrigeration refrigerator has a long service life, is relatively simple to maintain, and it is relatively easy to replace parts such as the compressor.

In short, when buying a refrigerator, it is recommended to choose a compressor refrigeration product, because it has many advantages such as good refrigeration effect, low energy consumption and easy maintenance, which can better meet our use needs.