A21-8107031 ELECTRIC SPEED REGULATION MODULE B14-8107910 AIR FILTER CORE B14-8107913 BRACKET-FILTER ASSY - AIR INLET B14-8107915 FILTER CORE B14-8107921 COVER FIXED B14-8107015 VENT CASING ASSY B14-8107013 HOUSING-VENTILATION B14-8107017 HOUSING-EVAPORATOR UPR B14-8107130 CORE ASSY-HEATER 1 B14-8107150 EVAPORATOR CORE ASSY 1 B14-8107110 GENERATOR FAN ASSY 1 B14-8107019 HOUSING-EVAPORATOR LWR 1 B11-8107510 TEMPERATURE CONTROL 1 B11-8107310 CONTROL MECHANISM-AIRFLOW 1 B11-8107710 ADJUSTMENT-INR CIRCULATION CONTROL 1 B11-8107025 PIPE-DRAIN 1 A11-8107013 NUT 1 B14-8107010 HVAC ASSY 2 B14-8107037 CABLE ASSY - AIR CONDITIONER 2 B14-8112010 CONTROL PANEL - AIR CONDITIONER The function of evaporator in automobile air conditioning system is to exchange heat with the outside air, liquefy and absorb heat to achieve the effect of refrigeration. In the automobile air conditioning system, the evaporator is a part of the air conditioning system. The high-pressure liquid refrigerant enters the evaporator through the expansion valve. The atomization of the expansion valve turns the liquid refrigerant into fog. The fog refrigerant changes into gas under low pressure. In the process of transformation, it becomes cool air after absorbing hot air, so as to achieve the refrigeration effect. Automobile air conditioning system is a device to cool, heat, ventilate and purify the air in the carriage, which can provide a comfortable riding environment for passengers.