Fuel and ignition control
US4415328A · kind A · utility
5Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1981 |
| Grant date | Nov 15, 1983 |
| Priority date | — |
| Expiry date | Sep 28, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2235/12
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A fuel and ignition control for a pulse combustion furnace includes both analog and digital timing means for fail safe operation, fuel valve control means which depend on proper cyclic operation for proper function, and flame detection means which are fail safe due to the necessity of its components providing a critical phase shift angle. The fuel control valve means includes energy storage means which is stepwise depleted to positively limit the time of valve energization in the absence of detection of flame, and is also disabled after a predetermined time by the digital timing means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.