What is a refrigerator evaporator, what is it like and where is it?

Evaporator is a very important part of the four refrigeration components. The low-temperature condensed liquid passes through the evaporator, exchanges heat with the outside air, vaporizes and absorbs heat, and achieves the refrigeration effect. The evaporator is mainly composed of a heating chamber and an evaporation chamber. The heating chamber provides the heat needed for evaporation to the liquid, and promotes the liquid to boil and evaporate; The evaporation chamber completely separates the gas phase from the liquid phase.

The freezing chamber is directly surrounded by an evaporator, or there is an evaporator in the freezing chamber, and another evaporator is arranged at the upper part of the refrigerating chamber, and the evaporator directly absorbs heat and cools down.

Extended data

The first refrigerator with motor-driven compressor was invented by Swedish engineers Brighton and Mendes in 1923. Later, an American company bought their patent and produced the first batch of household refrigerators at 1925. In the first refrigerator, the electric compressor and the refrigerator were separated, and the latter was usually placed in the cellar or storage room of the family and connected with the electric compressor through pipes, and then they were combined into one.

Before 1930s, most refrigerants used in refrigerators were unsafe, such as diethyl ether, ammonia water and sulfuric acid. Flammable, corrosive or irritating. Later, I started looking for a safer refrigerant and found Freon. Freon is a non-toxic, non-corrosive, non-flammable fluorine compound, which quickly became the refrigerant of various refrigeration equipment and has been used for more than 50 years.

However, it has been found that freon has a destructive effect on the ozone layer of the earth's atmosphere. So people began to look for new and better refrigerants.

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