Nozzle for use in a burner
US5647739A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1995 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Apr 10, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C2900/06041
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A nozzle adapted for use in a high excess air burner. The nozzle includes three combustion chambers and an outer flame retention ring for supporting combustion of gaseous fuel over a range of volumetric flow rates. Combustion air is staged to each of the combustion chambers and to the outer flame retention ring for mixing with the fuel to form a combustible fuel-air mixture. Combustion occurs in the first combustion chamber at relatively low flow rates of fuel. Combustion occurs in the second and third combustion chambers and the outer flame retention ring with increasingly higher fuel flow rates. The second combustion chamber is configured with a radially inwardly converging sidewall to provide for a smooth transition of the flame between the second and third combustion chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.