| 摘要 |
PROBLEM TO BE SOLVED: To provide a blower fan with an impeller suppressing deterioration of impeller characteristics due to interference of an air flow generated by rotation of rotor blades with a connection part. SOLUTION: The blower fan 2 includes a cylindrical cup part 10. the plurality of rotor blades 11, a motor rotating the plurality of rotor blades 11, and a housing 30. The plurality of rotor blades 11 are connected with each other by the annular connection part 12. The connection part 12 is formed at a position in 70% to 90% of the blade length from the roots of the rotor blades 11 at the outer peripheral face of the cup part 10 with respect to the blade length of the rotor blades 11 along the radial direction. Further, the housing 30 and a base part 24 are connected through a plurality of stator blades 31. The plurality of stator blades 31 are connected by a second annular connection part 32 and the second connection part 32 are arranged radially inward of the first connection part 12. COPYRIGHT: (C)2011,JPO&INPIT
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