Where is the evaporator of the car air conditioner? The air conditioner evaporator of an automobile is usually installed under the dashboard of the passenger seat.
The evaporation box of automobile air conditioner is installed in the heater, which is a large plastic part with air duct, evaporation box and warm water tank.
What is an automobile evaporator? The evaporator is a heat exchanger.
High-pressure liquid refrigerant enters the evaporator through the expansion valve. Due to the atomization of the expansion valve, the liquid refrigerant becomes mist, and the mist refrigerant becomes gas at low pressure. In the process of conversion, it will absorb heat, so the evaporator is cool at this time, and after the wind passes, it will become cool air to achieve the purpose of refrigeration.
What is the use of automobile air conditioner evaporator in automobile evaporation box? Belonging to a direct air cooling structure. It uses the principle that low-temperature and low-pressure liquid refrigerant needs to absorb a lot of heat when evaporating to take away the heat in the air passing around, so as to achieve the purpose of cooling, and send cold air into the compartment to cool the car. When the low-temperature and low-pressure liquid refrigerant from the throttle device evaporates, it absorbs a lot of heat in the surrounding air, thus achieving the purpose of cooling the car.
Simply put, the function of the evaporation box is that the high-temperature and high-pressure liquid refrigerant enters the evaporation box through the atomization of the expansion valve. As the pressure decreases, the mist refrigerant will evaporate and become gaseous. During this transformation, it will absorb heat. So at this time, the temperature on the surface of the evaporation box will become lower, and the wind will cool after passing through the surface of the evaporation box.
(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)