Air conditioning apparatus for vehicle

An air conditioning apparatus for a vehicle having a passenger compartment, said air conditioning apparatus comprising:

• a rear air-conditioning unit for controlling a temperature of air blown toward a rear seat side in the passenger compartment, wherein:
• said rear air-conditioning unit includes
• a rear case for forming a rear air passage, said rear case having a rear opening portion for blowing air toward the rear seat side in the passenger compartment,
• a rear blower unit for blowing air into said rear air passage,
• a rear cooling heat exchanger for cooling air flowing through said rear air passage,
• a rear heating heat exchanger for heating air having passed through said rear cooling heat exchanger by performing heat-exchange between air and hot water flowing therethrough,
• a flow control valve for adjusting a flow rate of hot water flowing into said rear heating heat exchanger, and
• a rear mode switching door which slides and reciprocates approximately horizontally to open and close said rear opening portion;
• said rear cooling heat exchanger is disposed approximately horizontally in said rear case;
• said rear heating heat exchanger is disposed at an upper side of said rear cooling heat exchanger approximately horizontally in said rear case;
• and
• said rear opening portion is provided at an upper side of said rear heating heat exchange;
• wherein
• said rear heating heat exchanger includes an inlet tank and an outlet tank which are disposed to form a predetermined distance therebetween, and a plurality of tubes which are disposed between said inlet tank and said outlet tank in parallel with each other;
• said rear heating heat exchanger is a one-way type in which hot water flows from said inlet tank toward said outlet tank through said tubes in one way;
• said rear opening portion includes a rear face opening for blowing air toward an upper portion at the rear seat side in the passenger compartment, and a rear foot opening for blowing air toward a lower portion at the rear seat side in the passenger compartment;
• and
• said rear face opening and said rear foot opening are provided at a downstream air side of said rear heating heat exchanger, and are positioned to be adjacent to each other in a direction perpendicular to a longitudinal direction of said tubes of said rear heating heat exchanger.