| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problems: in the existing electric blower, airtightness between a centrifugal fan and a fan casing is enhanced by forming the thickness of the air inflow portion of a front plate composing the centrifugal fan thinner than the thickness of the front plate; however, vibration of the end of the front plate due to rotation of the centrifugal fan is not suppressed. SOLUTION: For stable rotation of the centrifugal fan by suppressing vibration, the surface shapes of the inner surface and outer surface of the front plate are symmetrically formed, and pressure applied to the inner surface of the front plate and pressure applied to and outer surface thereof are equalized. COPYRIGHT: (C)2011,JPO&INPIT |
