Electronic cooling fan with airflow recirculation prevention during fan failure
US10813248B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2018 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Nov 11, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/20736
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, an apparatus includes a fan for cooling electronics within a chassis, the fan comprising a rotor with a plurality of fan blades connected thereto for generating an axial airflow during operation of the fan, a sensor for detecting failure of the fan, and an airflow blocking device positioned at an exhaust side of the fan and configured to prevent airflow through the fan upon detection of the fan failure, wherein the airflow blocking device is stowed in a position removed from a path of the axial airflow generated by the fan during operation of the fan. A method for preventing airflow recirculation at a failed fan is also disclosed herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.