Patent ID: 7967063

Claim:
An air conditioning apparatus for a vehicle, comprising: a case; an evaporator disposed in the case for generating a cool air; a cool air passage provided in the case downstream of the evaporator; a heating air passage provided in the case downstream of the evaporator; an air mixing space provided in the case downstream of the cool air passage and the heating air passage; a heater core disposed in the heating air passage for heating at least part of the cool air; a cool-side door device disposed upstream of the cool air passage, the cool-side door device configured to control a volume of the cool air flowing in the cool air passage; and a heating-side door device disposed upstream of the heating air passage, the heating-side door device configured to control a volume of the cool air flowing in the heating air passage, wherein at least one of the cool-side door device and the heating-side door device includes a plurality of doors, and the plurality of doors are configured to begin to open successively when the plurality of doors are opened from a fully closed state, the plurality of doors of the cool-side door device includes at least a first cool-side door and a second cool-side door, the first cool-side door and the second cool-side door are configured such that an opening area provided by the first cool-side door is smaller than an opening area provided by the second cool-side door, and the first cool-side door is located closer to the heating air passage than the second cool-side door.