| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ceiling embedded air conditioner of high reliability and low noise preventing the failure of a motor by the improvement of motor cooling efficiency. <P>SOLUTION: The motor side of a hub 3c of downward projecting shape covering the motor 4 and fixing a rotating shaft 4a of the motor 4 is provided with an air guide cover 18 forming a motor side air course 3f between itself and the motor 4 and guiding air flowing into the motor side air course 3f from a clearance formed between a casing top plate 1b and a main plate 3b, toward the motor 4. The air guide cover 18 comprises a peripheral surface part 18c extended downward from the main plate 3b side and is formed such that the height position of a lower end opening 18b of the peripheral surface part 18c is located below a lower end surface 4b of the motor 4. The hub 3c has a plurality of openings 3d allowing air flowing into the motor side air course 3f from the clearance, flowing out of the lower end opening 18b of the air guide cover 18 and flowing into a clearance between the air guide cover 18 and the hub 3c, to flow out to a fan internal air course 3e. <P>COPYRIGHT: (C)2007,JPO&INPIT |
