Automotive air-conditioner having scroll casing

An automotive air-conditioner comprising:

• an air-conditioner case;
• a blower unit having a scroll casing containing a centrifugal fan therein, the scroll casing having a scroll angle starting from a scroll-starting position and ending at a scroll-ending position, the blower unit being disposed in the air-conditioner case;
• a plurality of outlet ducts disposed downstream of the blower unit in the air-conditioner case, some outlet ducts requiring a larger amount of air to be blown therefrom than other ducts;
• an air passage formed in the air-conditioner case from the centrifugal fan to the outlet ducts;
• and
• mode-switching doors for closing and opening the respective outlet ducts in a controlled manner, wherein:
• the centrifugal fan is a backward fan having a blade angle larger than 90°;
• and
• the outlet ducts requiring a larger amount of air are positioned closer to the scroll-starting position than the other outlet ducts requiring less amount of air.