Airflow sensor for filter blockage detection
US7726186B2 · kind B2 · utility
9Cited by
15References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2006 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Feb 9, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thermal management system includes an airflow sensor that measures airflow in an air path inside an enclosure to be cooled, wherein the air path includes a filter and a fan. A controller is responsive to the airflow sensor for monitoring the rate of airflow inside the enclosure and determining the condition of the filter. In one embodiment, the airflow sensor is an active type sensor, such as a thermistor, disposed on circuit boards. In further embodiments, the airflow sensor is disposed proximate a tube through the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.