What kind of refrigerator do you have? What is the working principle of refrigerator?

Refrigerator is one of the most common household appliances in modern families. There are many types of refrigerators, and people need to consider the characteristics of each type when choosing refrigerators. What kind of refrigerator do you have? Today, Bian Xiao will answer your questions one by one.

1. What kind of refrigerator do you have?

According to the types of refrigerators, there are three main classification methods, namely, the refrigeration mode in refrigerators, the use of refrigerators, and the climate environment.

1, classified by refrigerator cooling.

Forced circulation of cold air: also called indirect cooling (air cooling) or frost-free refrigerator. There is a small fan in the refrigerator to force the air in the refrigerator to flow, so the temperature in the refrigerator is uniform, the cooling speed is fast and the use is convenient. However, due to the defrosting system, the power consumption is slightly higher and the manufacturing is relatively complicated.

Natural convection of air conditioning: also known as direct cooling or frosting refrigerator. Its freezer is directly surrounded by an evaporator, or there is an evaporator in the freezer and an evaporator in the upper part of the freezer. The evaporator absorbs heat directly and enters the forced circulation and natural convection of cold air. In recent years, this type of refrigerator has been widely used in new products, mainly taking into account the advantages of air-cooled refrigerator and direct-cooled refrigerator.

2, according to the purpose of refrigerator classification

Refrigerator: At least one compartment of this kind of refrigerator is a cold room, which is used to store food that does not need to be frozen, and its temperature should be kept above 0℃. But this type of refrigerator can have a cooling room, an ice making room, a frozen food storage room and an ice greenhouse, but it has no freezing room.

Refrigeration and freezing: This type of refrigerator has at least one refrigerating room and one freezing room.

Freezing box: This type of refrigerator has at least one freezing room, which can store food according to regulations, and may also have a frozen food storage room.

3. Refrigerators are divided into sub-temperate type (SN), subtropical type (ST) and tropical type (T) according to the climate environment.

Second, what is the working principle of the refrigerator?

According to different classifications, refrigerators work in different ways. The working principle of refrigerators can be divided into nine categories:

1, compression refrigerator is to use the motor to provide mechanical energy, mainly through the compressor and refrigeration system to work together to cool. The refrigeration system is based on the low boiling point of refrigerant and the principle that the refrigerant absorbs the heat inside the refrigerator. This kind of refrigerator has a long life and is easy to use. Most refrigerators adopt this design and working principle.

2. Absorption refrigerator mainly uses heat source for refrigeration. For example, gas and electricity are used as the driving force of refrigeration, so that the ammonia and hydrogen mixture in the refrigerator can continuously absorb heat for refrigeration. This kind of refrigerator has low working efficiency and slow cooling speed. This kind of refrigerator is basically not produced in the market now.

3. The semiconductor refrigerator uses PN semiconductor refrigeration. The principle is to stimulate nodes with direct current to produce peltier effect.

4. Chemical refrigerator uses chemical substances to absorb heat to achieve refrigeration effect.

5. Electromagnetic vibration refrigerator uses electromagnetic vibration machine for refrigeration, and its working principle is similar to that of compression refrigerator, which uses compressor as kinetic energy for endothermic refrigeration.

6. Solar refrigerators mainly use solar energy, which can be converted into refrigeration energy.

7. The refrigerator with adiabatic demagnetization refrigeration uses magnetic field to cool down, which is a relatively rare type of refrigerator with relatively large radiation.

8. Radiant refrigeration refrigerator is a refrigerator that absorbs heat by radiation. Its working principle is simple, that is, it absorbs heat through radiation.

9. The refrigerator with solid refrigeration uses some solid that can absorb heat as the heat absorption energy of the refrigerator for refrigeration.

It can be seen that the working principle of refrigerators is similar, mainly using refrigerant to absorb heat to achieve refrigeration effect. The refrigerator needs regular maintenance and cleaning. You can put a lemon in the refrigerator to absorb the odor in the refrigerator.