Automotive air conditioners are generally composed of compressors, electronically controlled clutches, condensers, evaporators, expansion valves, receiver dryers, hoses, condensing fans, vacuum Solenoid valve (vacuumsolenoid), idler and control system and other components. Automobile air conditioners are divided into high-pressure pipelines and low-pressure pipelines. The high-pressure side includes the compressor output side, high-pressure pipeline, condenser, liquid storage drier and liquid pipeline; the low-pressure side includes the evaporator, accumulator, return gas pipeline, compressor input side and compressor oil pool.
(1) The liquid storage dryer is actually a device for storing refrigerant and absorbing refrigerant moisture and impurities. On the one hand, it is equivalent to the fuel tank of a car, replenishing the space left by the leaked refrigerant. On the other hand, it acts like an air filter to filter out impurities in the refrigerant. There is also a certain amount of silica gel in the liquid storage drier to absorb moisture.
(2) The compressor is the heart of the air conditioning and refrigeration system, and it is a power source that circulates the refrigerant in the system.
(3) Since the pipeline needs to inject a certain pressure of refrigerant, it must use a metal pipeline. Especially from the compressor to the condenser to the refrigerant bottle to the expansion valve, since it belongs to the high-pressure section of the system, it has higher requirements for high-pressure resistance than other pipelines.
(4) Compressor As the name suggests, the compressor plays the role of compression. Its function is to make the refrigerant complete the transformation process from gaseous state to liquid state, so as to achieve the purpose of cooling and condensing the refrigerant.
(5) Although the condenser and the evaporator have different names, they have similar structures. They are all devices that are covered with thin metal sheets for heat dissipation on a row of curved pipes, so as to realize the heat exchange between the outside air and the material in the pipes.
The condensation of the condenser refers to the heat dissipation of the refrigerant in its pipes from the gaseous state to the liquid state. Its principle is similar to the cooling water tank of the engine (the only difference is that the water in the water tank is always liquid), so it is often installed on the front of the car so that it can dissipate heat and condense.
The evaporator is just the opposite of the condenser. It is the place where the refrigerant changes from liquid to gas (that is, evaporates) to absorb heat.
