How does refrigerator refrigeration work? What is the principle of refrigerator refrigeration

Hello! The principle of refrigerator refrigeration is that the refrigerant is sucked in by the compressor in the form of gaseous, compressed into high temperature and high pressure vapor into the condenser through the exhaust pipe, and the refrigerant dissipates heat into the outside air, condenses into a high-pressure liquid, enters the capillary through the filter, and is intercepted and depressurized into the evaporator for vaporization. The refrigerant liquid absorbs external heat and vaporizes into dry saturated steam to cool down the refrigerator, and the refrigerant becomes low-pressure superheated vapor and is sucked back by the compressor, and so on.

The refrigerator is good'The purpose of refrigeration is achieved by evaporation cooling or gasification heat absorption.

The throat of the refrigerator is filled with a refrigerant, also known as a refrigerant, which is a colorless, odorless and non-toxic gas with a very low boiling point, between 20 and 30 degrees. When the refrigerant is in the gas state, it is pressurized by the compressor, and after pressurization, it flows through the throat'To the condenser on the back of the refrigerator, the heat sink is used to dissipate heat (when the substance is compressed, the temperature rises), and then condenses into liquid'Body. liquid'The refrigerant of the body advances'After entering the flap of the evaporator, it immediately dissolves into steam because it is released from the pressure of the compressor, and at the same time absorbs the latent heat of vaporization to the air and food in the refrigerator, causing the internal cooling of the refrigerator.

Through this system circulation, the purpose of refrigeration is achieved.

The vaporized Freon is pressed back into the condenser outside the box by the compressor to dissipate heat and then turn into liquid'The body, in this way, pumps the heat energy from the refrigerator to the outside of the box.

There is a compressor in the back seat of the refrigerator, compressed freon gas becomes a high-temperature and high-pressure gas, and then cooled down by the condensing devices installed on both sides to become a medium-temperature and high-pressure gas, and then becomes a liquid through a throttle valve, and when the liquid flows through the evaporator in the refrigerator (usually installed in the partition of the freezer), it will absorb heat and become a cryogenic liquid, and then compressed by the compressor, so as to form a circulation and take the heat away from the refrigerator.

When the temperature in the compressor is lower than the critical temperature of the refrigerant to reach the required pressure, the refrigerant will be liquefied, and a large amount of heat is emitted into the air during the liquefaction process. <

This is a process of energy conversion, the refrigerant can absorb heat and evaporate into gas under certain pressure conditions, when the temperature in the compressor is lower than the critical temperature of the refrigerant to reach the required pressure, the refrigerant will be liquefied, and a large amount of heat is emitted into the air during the liquefaction process, at this time, the temperature of the liquefied refrigerant is reduced, and the buffer is again sent to the steaming chamber to continue to evaporate, reabsorb a large amount of heat, and reduce the temperature around the evaporator. To put it simply, the refrigerant evaporates and absorbs heat, and then liquefies**, and then evaporates and absorbs heat again.

A refrigerator is a kind of refrigeration equipment that maintains a constant low temperature, and it is also a civilian product that keeps food or other items in a constant low temperature and cold state. There are cabinets or boxes that freeze through compressors and ice machines, and storage boxes with refrigeration devices. Its invention can be traced back to the nineteenth century, and the world's first artificial refrigeration household refrigerator was born in 1879, after years of development and innovation, China began to produce household refrigerators in the second half of the 50s of the 20th century.

The compressor of the refrigerator sucks in the low-temperature, low-pressure refrigerant vapor in the evaporator for compression, and the refrigerant releases a large amount of heat after liquefaction, which is dissipated into the air through the heat pipe and heat sink. After the liquefied refrigerant dissipates heat, it enters the evaporator through the buffer and then through the air pipe, and the refrigerant evaporates in the evaporator to absorb a large amount of heat, and the temperature around the evaporator is rapidly reduced. So as to achieve the refrigeration effect.

Compression refrigerator: It is made by compressing the refrigeration system, which uses the principle that the refrigerant below the boiling point is turned into steam in the evaporator for heat absorption.

Absorption refrigerator: This kind of refrigerator can use the electric heating element as the power, and use the mixed solution of ammonia and hydrogen to continuously absorb heat for diffusion to the purpose of refrigeration, its refrigeration efficiency is low, and the cooling speed is relatively slow.

Semiconductor refrigerator: It is the use of pn-type semiconductors through the utility of direct current on the node, and the principle of the Peltier effect is used to realize the refrigeration of the refrigerator.

Introduction to the refrigeratorRefrigerator is a kind of appliance that can keep the temperature low, so that food or other items can be kept for a longer time, whether it is a family, a restaurant, a store, etc., and now there are many types of refrigerators, and different types of refrigerators have different refrigeration principles.

The refrigeration principle of the refrigeratorFor example, the common compression refrigerator is based on the principle that the motor provides mechanical energy and works on the refrigeration system through the compressor. The refrigeration system uses a refrigerant with a low boiling point to evaporate and absorb heat for refrigeration. There is also a semiconductor refrigerator, the principle of which is to use the principle of direct current to the PN-type semiconductor to produce the Peltier effect on the junction to achieve cooling.

The refrigerator is a more commonly used electrical appliance that can be used to keep food fresh. So what is the principle of refrigerator refrigeration? Let's take a look.

In general, the refrigeration principle of the refrigerator is that the evaporator absorbs the refrigerant and then sends the compressed refrigerant into the condenser, and the condenser sends the liquefied refrigerant into the evaporator through or with capillaries for evaporation and heat absorption, so as to achieve the purpose of refrigerator refrigeration.

The refrigeration process is roughly as follows:

The compressor compresses and heats the refrigerant gas and passes it through a disc-shaped condenser. The gas will condense into a liquid state in the condenser tube, and at the same time dissipate the heat and become a condensed liquid in a high-pressure state; The condensate flows through the expansion valve and enters the evaporator after the pressure is lowered, where the low-pressure refrigerant liquid absorbs the heat inside the refrigerator (endothermic refrigeration) and converts it into a low-pressure gas. The refrigeration gas flows into the compressor again and starts the next refrigeration process, forming a complete self-circulating refrigeration system.