Electric blower and electric cleaner with an air cooled power device situated between the impeller and motor
US6488475B2 · kind B2 · utility
41Cited by
5References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2001 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Mar 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B40/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electric blower includes a motor unit having a stator and a rotor, a fan unit having an impeller attached to an output shaft of the rotor, and a circuit unit having a heat-generating component for controlling electric power to the motor unit. The circuit unit is arranged in an airflow path of air expelled from an outer periphery of the impeller toward the stator and the rotor of the motor unit. The air suctioned by rotation of the impeller cools the heat-generating component in the circuit unit before cooling the stator and the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.