Centrifugal impeller, electric blower, electric vacuum cleaner, and hand dryer
US10794391B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 28, 2016 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Oct 28, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/307
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A centrifugal impeller high in efficiency and suction power, an electric blower having the centrifugal impeller, and an electrical apparatus provided with the electric blower are obtained. The centrifugal impeller includes a hub and a plurality of rotor blades. The plurality of rotor blades are coupled to a surface portion of the hub. At least one of the plurality of rotor blades includes an end portion, a first surface, and a second surface. The end portion includes a planar portion and a curved portion. The planar portion is continuous to the second surface and has a flat surface. The curved portion connects the planar portion and the first surface to each other and has a curved surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.