Ventilation, heating and air conditioning system

Pic. 12.1. Schematic diagram of the movement of air flows in the ventilation, heating and air conditioning system: 1 - windshield vents; 2 - dampers for the distribution of air flows to the windshield deflectors and instrument panel deflectors; 3 - instrument panel deflectors; 4 - air ducts for heating the driver's and passengers' legs; 5 - damper for distributing air flows to the instrument panel deflectors and air ducts for heating the driver's and passengers' feet area; 6 - heater radiator; 7 - cabin air filter; 8 - damper of the air recirculation system; 9 - air intake box; 10 - air intake in the car; 11 - fan impeller; 12 - fan motor; 13 - air conditioner evaporator; 14 - drainage hole for draining condensate; 15 - damper of the temperature controller; 16 - housing block of the heating and air conditioning system.

Pic. 12.2. Schematic diagram of the movement of the refrigerant in the air conditioning system: 1 - combined pressure sensor; 2 - section of the high pressure pipeline; 3 - receiver-drier; 4 - service valve of the high pressure line; 5 - condenser (air conditioning radiator); 6 - fan of the condenser and radiator of the cooling system; 7 - air conditioner compressor; 8 - section of the low pressure pipeline; 9 - service valve of the low pressure line; 10 - heater fan; 11 - evaporator; 12 - thermostatic valve.

The ventilation, heating and air conditioning system is a single complex that provides the most comfortable conditions in the car, regardless of weather conditions and driving conditions. The system includes a heater (increases the air temperature in any operating mode of the system), air conditioner (reduces air temperature and humidity), blower (fan) and air ducts with filter (provide air exchange in the cabin, purify the air from dust), as well as the control unit (controls all elements of the system to obtain the specified comfort parameters).