Flame detection in a fuel fired appliance
US9388984B2 · kind B2 · utility
12Cited by
32References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 9, 2010 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Sep 15, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2231/12
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A control system for a fuel-fired appliance and methods of operating are disclosed. When an electrical characteristic of a flame detector fails to cross a threshold level during an ignition attempt and when the electrical characteristic of the flame detector changes by a predetermined amount, the control system may activate an indicator indicating a problem with the flame detector (e.g. dirty, misaligned, or otherwise unable to properly detect the flame).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.