The main component system of automobile air conditioning

- Dec 29, 2020-

The main component system of automobile air conditioning

Modern air conditioning systems are composed of refrigeration systems, heating systems, ventilation and air purification devices and control systems.

Automobile air conditioners are generally composed of compressors, electronically controlled clutches, condensers, evaporators, expansion valves, liquid storage dryers, pipes, condensing fans, vacuum solenoid valves, idlers and control systems. Automobile air conditioners are divided into high-pressure pipeline and low-pressure pipeline. The high-pressure side includes the compressor output side, high-pressure pipeline, condenser, receiver dryer and liquid pipeline; the low-pressure side includes the evaporator, accumulator, return line, compressor input side and compressor oil pool.


The receiver dryer is actually a device that stores refrigerant and absorbs refrigerant moisture and impurities. On the one hand, it is equivalent to the fuel tank of a car, replenishing refrigerant for the extra space for leaking refrigerant. On the other hand, it is like an air filter to filter out impurities doped in the refrigerant. A certain amount of silica gel is also contained in the liquid storage dryer to absorb water.

Condenser and evaporator-although they are called differently, they are similar in structure. They are devices that are covered with metal sheets for heat dissipation on a row of winding pipes to realize heat exchange between the outside air and the material in the pipe. Condensation of the condenser refers to the heat dissipation of the refrigerant in its pipeline from a gaseous state to a liquid state. Its principle is similar to that of the engine's heat dissipation water tank (the difference is that the water in the water tank is always liquid), so it is often installed in the front of the car, and together with the water tank, they can enjoy the cool breeze from the front. In short, where is the condenser cooler, so that it can dissipate heat and condense. The evaporator is the opposite of the condenser. It is a place where the refrigerant changes from liquid to gas (that is, evaporates) to absorb heat