Hot surface igniter adaptive control method
US8992211B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2008 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Jan 18, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2227/42
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An adaptive gaseous fuel ignition control method for use in consumer and commercial appliances that reduces stress on and increases the life of a hot surface igniter without resulting in a failure to ignite condition is provided. The method provides a preheating period, a full temperature period, and a trial for ignition period. The preheating period gradually increases the power applied to reduce the stress resulting therefrom. Once a gas valve has been commanded open, the controller monitors the time for ignition of the gaseous fuel. If the time is longer than a threshold, either the applied power or the period of time during which the power is applied is increased to shorten the time. If, however, the ignition period is shorter than the threshold, either the power applied or the period of time during which the power is applied before commanding the gas valve open is lowered or shortened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.