Device for use in a blower configuration
US7101148B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2004 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Oct 19, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/162
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device for application in a fan configuration is configured, in particular, to be directly driven by an electric motor. In the fan configuration, a centrifugal fan wheel is mounted to rotate in unison with a drive shaft. The centrifugal fan wheel, for producing a directed airflow, is surrounded by a fan housing. A seal is disposed in an admission orifice, for largely filling in an air gap between the centrifugal fan wheel and the inner surface of the fan housing. Such a configuration improves the housing and sealing thereof for an application in a vacuum cleaner by having the sealing device be embodied as a sealing ring linked to a buffer part out of the fan housing, which part tightly surrounds the admission orifice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.