Fan, motor and impeller thereof
US7701097B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2007 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Sep 15, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/5806
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An impeller, which is driven by a stator, includes a conducting shell, a hub and a plurality of blades. The conducting shell covers at least one side of the stator. The hub covers the conducting shell. At least one air gap is formed between the hub and the stator. A top portion of the hub has an opening to partially expose a top portion of the conducting shell. At least one airflow passage is formed between an inner wall of the hub and an outer surface of the conducting shell. The airflow passage has at least one inlet connected with the opening and at least one outlet connected with the air gap. The blades are disposed around the circumferences of the hub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.