Axial-flow fan and projector provided with the same
US7008180B2 · kind B2 · utility
15Cited by
10References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2003 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Dec 25, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/16
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An axial-flow fan has a plurality of main fins (702), and auxiliary fins (703) provided between the main fins (702), where the position of a front end of the auxiliary fin (703) relative to X axis and the position of a front end of the main fin (702) adjoining the auxiliary fin in reverse-rotary direction are aligned, the height of the auxiliary fin (703) is approximately three fourths of the height of the main fin (702), and the cross sections of the main fin (702) and the auxiliary fin (703) taken along the axial direction of the main shaft are streamlined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.