Impeller of axial-flow blower
AssigneeMinebea Co., Ltd.
InventorShuichi Otsuka
Life of this patent
Estimating the term…
Abstract
In an impeller of an axial-flow blower driven by an outer rotor type motor, the impeller is formed in sections so that individual impeller sections 5F and 5R can easily be formed by molding with an axial coupling type die, and also which are arranged in series to construct the entire impeller, thereby realizing an impeller structure in which adjacent impeller blades overlap each other. The number of impeller blades of the front section impeller is more than that of the rear section impeller to reduce the noise generated during the rotation of the impeller.
Claims2
An impeller of an axial-flow blower which is driven by an outer rotor type motor and which is integrated with a rotatably supported shaft and a motor yoke, the impeller and the motor yoke rotating outside the stator around the shaft to blow air, the impeller comprising:
- a plurality of individual impeller sections, each section having a different number of impeller blades, the individual impeller sections being separately formed of a synthetic resin and arranged in series in the axial direction of the shaft without forming any steps.
Dependencies are inferred from the claim text.