Compact air conditioner for automobiles

A compact air conditioner for automobiles, comprising:

• an evaporator positioned on an upstream side of an interior flow passage of an air conditioner;
• a heater core positioned on a downstream side of said interior flow passage;
• a defrost vent selectively opened and closed by a defrost door, and positioned in a mixing chamber that is situated in an exit of said interior flow passage;
• a face vent opened and closed by a face door;
• a floor vent divided by a second partition positioned behind said heater core, and selectively opened and closed by a floor door;
• a first partition positioned between said evaporator and said heater core, and provided with a first blowing opening for allowing air to detour said heater core and a second blowing opening for blowing air to said heater core;
• a temperature regulating door for regulating the degree of opening of said blowing openings, said temperature regulating door being supported on both sidewalls of said air conditioner housing by its two side support arms;
• a heater chamber containing said heater core, said heater chamber being defined by said first and second partitions and a pair of side partitions, being open at its bottom and communicating with said second blowing opening;
• and
• a pair of side blowing passages formed between each side partition and an interior wall of said air conditioner housing.