What is the role and working principle of automotive air conditioning system

The working principle of automobile air conditioning can be divided into four processes, namely compression, heat dissipation, throttling and heat absorption.

The high-temperature, low-pressure gaseous refrigerant flowing from the cabin is compressed by the compressor into a high-temperature, high-pressure gaseous refrigerant, at which time the refrigerant passes through the condenser and then emits heat into a low-temperature, high-pressure liquid refrigerant, which is sent to the interior of the car under the action of the fan, to achieve the effect of raising the temperature inside the car.

Liquid storage drier absorbed moisture and impurities are purified, low-temperature liquid refrigerant through the expansion valve of the gasification is depressurized into low-temperature and low-pressure gaseous refrigerant, at this time the refrigerant through the evaporator to absorb heat, and become a low-temperature, low-pressure liquid refrigerant, under the action of the fan, the heat is emitted from the car to reduce the temperature inside the effect of the car. At this time, the refrigerant returns to the engine room and absorbs the heat generated in the engine room, the refrigerant is in a high-temperature, low-pressure state, the system enters the next cycle.

Composition of automobile air conditioning is introduced

1, ventilation system: its role is to ensure that the car must be traveling indoor ventilation, that is, the car indoor constantly rushed into the fresh air, drive exhaust mixed with dust, carbon dioxide and harmful gases from the engine. In the cold winter, the fresh air should also be heated to ensure that the indoor temperature is appropriate.

2, the heating system: its role is to heat the air inside the car or fresh air from the outside into the car, to achieve the purpose of heating, dehumidification.

3, refrigeration system: its role is to reduce the temperature inside the car when the ambient temperature outside the car is high, so that passengers feel cool and comfortable.

4, air purification system: its role is to introduce air filtration, and constantly exclude the dirty gas inside the car, to keep the air inside the car clean.

5, control system: the control system is mainly composed of electrical components, vacuum piping and manipulation mechanism. Its role on the one hand is used to control the temperature and pressure of the cooling and warming system, on the other hand, the temperature of the air inside the car, air flow, flow direction to manipulate, in order to improve the air conditioning system functions.