Burner with toroidal-cyclone flow for boiler with liquid and gas fuel
US5085577A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1990 |
| Grant date | Feb 4, 1992 |
| Priority date | — |
| Expiry date | Dec 20, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D11/402
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A burner is of generally tubular configuration, and comprises an inner shell and an outer shell. The inner shell has therein a nozzle, an ignition electrode, and a sight tube. An annular gap is provided between the two shells, through which a comburant-gas flows to an annular, inwardly directed and constricted discharge opening, with swirl blades upstream of the discharge opening. A comburant-gas supply passes through openings in the inner shell upstream of a baffle which is positioned transversely of the inner shell, and which has radial slots therein inclined to the plane of the baffle to cause swirling of comburant-gas passing through the slots in the baffle. A toroidal-cyclone combustion zone is created due to the slots in the baffle creating a swirling downstream flow downstream of the baffle, and the inwardly directed annular and constricted opening, which aspirates comburant-gas which has passed through the baffle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.