Interior unit of a split type air-conditioning apparatus

An interior unit of a split type air-condition apparatus comprising:

• a cabinet structure having an air inlet opening for introducing air and an air outlet opening for discharging air said cabinet structure including a rear plate for mounting said fan motor, a middle frame assembled to said rear plate, said middle frame fixing said heat exchanger and having a fan shroud for housing said centrifugal fan, a front panel assembled to said middle frame and having said air inlet opening and said outlet opening on its front side;
• refrigeration cycle components arranged inside said cabinet structure including a heat exchanger;
• means for circulating air including a centrifugal turbo fan with a plurality of backward curved blades disposed inside said cabinet structure, said centrifugal fan having a circular part raised in a longitudinal direction in the approximate center of said fan;
• means for driving said centrifugal fan including a fan motor accommodated in said raised circular part and having a motor shaft extending in said longitudinal direction, said fan being fixed to said motor shaft at the center thereof wherein said rear plate includes a circular mount raised in said longitudinal direction, said mount supporting said fan motor about the approximate center of gravity of said fan motor along a line extending in said longitudinal direction, whereby the thickness of said apparatus in said longitudinal direction and the vibration of said motor are minimized.