Motor-driven blower and method of manufacturing impeller for motor-driven blower

摘要

Reduction of air resistance which acts on the conventional motor-driven blower is limited because crushed protrusions are formed by staking on the surface of the plate of the impeller of the motor-driven blower, and the air resistance is a significant impediment to the increase of the operating speed of the motor-driven blower. An impeller comprises a front plate (101) having a suction opening (801), a back plate (102) disposed opposite to the front plate (101), and a plurality of blades (103) disposed between the front plate (101) and the back plate (102). At least either the front plate (101) or the back plate (102) is formed integrally with the blades (103).