Electric blower, electric vacuum cleaner, and hand drier
US11576538B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 1, 2017 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Jan 6, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2250/52
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electric blower includes a motor unit, a shaft, a centrifugal impeller, a fan cover, a motor unit case, and a bracket located away from centrifugal impeller and toward motor unit in a direction in which a central axis of the shaft extends. The bracket includes a first portion located outward of the vent in a radial direction, and a second portion located outward of the first portion and outward of an outer circumference of the motor unit case in the radial direction. A first airflow passage and a second airflow passage are formed in the bracket, the first and second airflow passages communicate with an airflow passage formed by the centrifugal impeller and the fan cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.