Air conditioner for vehicle use

An air conditioner for vehicle use comprising:

• a cold air passage in which cold air flows;
• a hot air passage in which hot air flows;
• a movable cold air door for adjusting a passage area of the cold air passage, means for moving the movable cold air door in a direction generally perpendicular to the cold flow between a first position closing the cold air passage and a second position fully opening the cold air passage;
• a movable hot air door for adjusting a passage area of the hot air passage, means for moving the movable hot air door in a direction generally perpendicular to the hot air flow between a first position closing the hot air passage and a second position fully opening the hot air passage;
• means for controlling the hot air door and the cold air door to define a maximum cooling condition where the movable cold air door is in its second position and the movable hot air door is in its first position;
• an intermediate cooling condition where the movable cold air door is in its second position and the movable hot air door is between its first and second position;
• a mid temp condition where the movable cold air door is in its second position and the movable hot air door is in its second position;
• an intermediate heating condition where the movable cold air door is between its first and second positions and the movable hot air door is in its second position;
• and a maximum heating condition where the movable cold air door is in its first position and the movable hot air door is in its second position.