Method and system for detecting dust accumulation in a HVAC filtering system
US9931591B2 · kind B2 · utility
2Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2013 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Sep 30, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F11/39
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A capacitive sensor system for detecting accumulation of dust in a filter of a HVAC system includes a first conductive mesh, a second conductive mesh, a first filter media disposed between the first conductive mesh and the second conductive mesh, and a circuit configured to measure a capacitance of a first capacitive sensor formed by the first conductive mesh, second conductive mesh, and the first filter media. The circuit further is configured to translate a measured capacitance to a dust level indicator frequency that is used to determine a frequency corresponding to level of dust.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.