| 摘要 |
PROBLEM TO BE SOLVED: To provide a centrifugal blower capable of effectively functioning a blade at an impeller inner periphery surface, and preventing wind pressure characteristics of the blower from being degraded and noises due to air turbulence from occurring without causing size increase in the blower form, and degrading a motor efficiency for driving the impeller. SOLUTION: An outer periphery of a stator which constitutes a motor is formed so as to become small toward a suction port, and an inner periphery of a rotor magnet facing through an air gap is also formed so as to become small toward the suction port. As a result, a top end diameter of a boss 5 of the impeller becomes small, and suction air flows along a conical shape of the boss from a shaft direction, so that it is possible to change the direction to a diametrical direction smoothly, and at the same time it is possible to smoothly flow to a main plate of the impeller. COPYRIGHT: (C)2005,JPO&NCIPI
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