Leakage detection in a flame sense circuit
US10935237B2 · kind B2 · utility
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118References
20Claims
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Key dates
| Filing date | Nov 22, 2019 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Nov 22, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2900/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A flame detection system is designed to detect leakage in flame sense circuits. The flame detection system includes a flame sensor, an amplifier, a detection circuit, and a microcontroller. Flame sense circuitry use operational amplifiers that needs negative voltage supply for its operation. Negative supply voltage properly measures negative input signals. Once a leakage current in the flame detection system is determined a shutdown signal is provided to shut down a flame sensor when the leakage current condition is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.