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|1. (WO2018003017) ELECTRIC BLOWER AND ELECTRIC VACUUM CLEANER|
|Applicants:||MITSUBISHI ELECTRIC CORPORATION
MITSUBISHI ELECTRIC HOME APPLIANCE CO., LTD.
|Title:||ELECTRIC BLOWER AND ELECTRIC VACUUM CLEANER|
The purpose of the present invention is to provide an electric blower that is highly efficient even with a small diameter and an electric cleaner equipped with the electric blower. The present invention is equipped with a centrifugal impeller (11), an electric motor (9), and a diffuser (15) disposed between the centrifugal impeller (11) and the electric motor in the direction of the rotating shaft of the centrifugal impeller (11). The diffuser (15) includes a main plate (14) and a plurality of stator blades (12) and a plurality of return stator blades (13) that are disposed on the main plate. The main plate comprises a connecting section (14A) that is located further toward the outer circumference side, relative to the rotating shaft, than the centrifugal impeller (11) and that is connected to the plurality of stator blades. Each of the plurality of stator blades comprises an outer circumference section (12B) that is located farther from the rotating shaft than the connecting section. Each of the outer circumference sections of the plurality of stator blades comprises an extension section (23) that extends further toward the electric motor side than the connecting section of the main plate in the abovementioned direction. The ratio D0/D1 of the diameter D0 of a circle internally tangential to an outer edge section of the main plate to the diameter D1 of a circle externally tangential to the outer circumference sections of the plurality of stator vanes is greater than 0.9.