Method for controlling air fuel ratio in gas furnace
US6764298B2 · kind B2 · utility
24Cited by
12References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2001 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Jul 26, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2235/16
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method is provided for controlling an air fuel ratio in a gas furnace which can maintain optimum performance in combustion, irrespective of variation in temperature control stages. Air quantity and fuel quantity are integrally, rather than separately, controlled through the detection and adjustment of variation in each until the air fuel ratio reaches an objective value. In this manner, transient phenomena caused during the burning operation is prevented, and optimum combustion performance is maintained regardless of the temperature variation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.