Fuel burner unit for mounting in a common air box
Abstract
Abstract A FUEL BURNER UNIT DESIGNED TO BE CONNECTED TO A COMMON AIR SUPPLY BOX IN PARALLEL WITH ONE OR MORE LIKE BURNER UNITS. THE BURNER COMPRISES A DUCT SYSTEM FOR CONVEYING COMBUSTION AIR FROM THE AIR BOX TO THE BURNER HEAD AND INCLUDES A SINGLE ANNULAR OUTER DUCT CONNECTED AT ITS FRONT END TO THE AIR BOX AND AT ITS REAR END TO INDIVIDUAL INNER DUCTS FOR PRIMARY AND SECONDARY COMBUSTION AIR, RESPECTIVELY. THE VOLUME RATIO BETWEEN PRIMARY AND SECONDARY AIR IS DETERMINED BY AN ADJUSTABLE, BUT NORMALLY FIXED BAFFLE DEVICE AT THE REAR OUTLET END OF THE OUTER DUCT, THE TOTAL AMOUNT OF COMBUSTION AIR SUPPLIED TO EACH BURNER IS CONTROLLED BY A VALVE DEVICE LOCATED AT THE INLET END OF THE ANNULAR OUTER DUCT.
Inventors
- 👤 Knud Erik Bendixen
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |