Reversible flow fan
US10662973B2 · kind B2 · utility
2Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2017 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Feb 17, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/307
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A reversible flow fan includes: an impeller that includes blade portions; and rear-edge curved portions disposed on surfaces on rear edge sides of the blade portions in a normal rotation direction of the impeller. The rear-edge curved portions are convexly curved from a center of the impeller toward directions of outer peripheral portions of the blade portions in airflow directions during a reverse rotation of the impeller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.