Vehicle air conditioning apparatus

A vehicle air conditioning apparatus comprising:

• a plurality of seat air conditioning units configured to selectively perform cooling or heating per corresponding seat among a plurality of seats installed in a cabin, respectively;
• and
• a plurality of exhaust ducts for discharging, outside the cabin, part of air used in the plurality of seat air conditioning units,
• wherein
• an exhaust duct of a given one of the plurality of seat air conditioning units is connected to an air inlet of another seat air conditioning unit,
• each seat air conditioning unit comprises:
• a condenser passage housing a condenser for condensing a refrigerant;
• an evaporator passage housing an evaporator for evaporating the condensed refrigerant;
• an outside air passage inducing outside air and including a first outside air passage connected to an outside air inlet of the condenser passage and a second outside air passage connected to an outside air inlet of the evaporator passage, and an inside air passage inducing inside air, the inside air passage including a first inside air passage connected to an inside air inlet of the condenser passage and a second inside air passage connected to an inside air inlet of the evaporator passage;
• a passage switching device including a first door opening any one of the outside air inlet of the condenser passage or the inside air inlet of the condenser passage and closing the other of the outside air inlet of the condenser passage or the inside air inlet of the condenser passage, and a second door opening any one of the outside air inlet of the evaporator passage or the inside air inlet of the evaporator passage and closing the other of the outside air inlet of the evaporator passage or the inside air inlet of the evaporator passage, wherein the passage switching device performs switching with the first door and the second door such that during cooling operation, the outside air is guided in a direction toward the condenser and during heating operation, the outside air is guided to a direction toward the evaporator;
• an air inlet of the first outside air passage and an air inlet of the second outside air passage are merged,
• an air outlet of the first outside air passage and an air outlet of the second outside air passage are merged, and
• an air inlet of the first inside air passage and an air inlet of the second inside air passage are merged.