Dual outlet burner and method
AssigneeEclipse, Inc.
InventorScott Anderson
Life of this patent
Estimating the term…
Abstract
A burner includes a casing that encloses an outer plenum, the casing forming a fuel inlet and an outer nozzle at its end. An inner tube extends generally concentrically through the outer plenum and forms an inner plenum such that the casing encloses the outer plenum and the inner plenum. The inner tube forms an inner nozzle at its end. The inner nozzle is disposed generally concentrically with respect to the outer nozzle. A valve arrangement adjusts a fuel velocity separately through each of the outer nozzle and the inner nozzle to shape a flame created when the fuel is provided in an oxidant rich environment.
Claims17
A burner, comprising:
- a casing that encloses an outer plenum formed in the casing;
- a fuel inlet opening formed in the casing;
- an outer nozzle opening formed at an end of the casing;
- an inner tube extending generally concentrically through the outer plenum, the inner tube forming an inner plenum such that the casing encloses the outer plenum and the inner plenum, the inner plenum extending generally concentrically with respect to the outer plenum;
- an inner nozzle opening formed at an end of the inner tube, the inner nozzle being disposed generally concentrically with respect to the outer nozzle;
- and
- a valve arrangement configured and operating to adjust a fluid velocity separately through each of the outer nozzle and the inner nozzle.
A burner, comprising:
- three concentric cylinders with tapered or thickened ends, the opposing end being blocked or otherwise plugged, wherein outer and inner concentric nozzles are formed in radial gaps between the three concentric cylinders, wherein each cylinder is sealably translatable in an axial direction relative to the remaining two concentric cylinders such that a cross-sectional area between the three concentric cylinders changes to control a proportion of gas flow to an outer nozzle formed between an outermost cylinder and an intermediate cylinder, and an inner nozzle formed in an innermost cylinder, wherein an intermediate plenum formed between the intermediate cylinder and the innermost cylinder is blocked or otherwise plugged at both ends;
- and
- radial holes formed in each of the three cylinders, the radial holes providing the only gas conduits between an outer plenum, which is defined between the outermost cylinder and the intermediate cylinder, and an inner plenum, defined within the innermost cylinder;
- wherein, during operation, gas flow originating from a gas inlet formed in the outermost cylinder is fluidly provided to the inner plenum through the radial holes, and wherein the gas inlet is in fluid communication with a fuel source.
A method for separately controlling flow rate and/or velocity of gas provided to concentric nozzle outlets for a burner, the method comprising:
- providing a casing that encloses an outer plenum formed in the casing;
- providing fuel to the outer plenum through a fuel inlet opening formed in the casing;
- providing an outer nozzle opening formed at an end of the casing, the outer nozzle providing the fuel to an oxidant rich environment;
- providing an inner tube extending generally concentrically through the outer plenum, the inner tube forming an inner plenum such that the casing encloses the outer plenum and the inner plenum, the inner plenum extending generally concentrically with respect to the outer plenum;
- providing an inner nozzle opening formed at an end of the inner tube, the inner nozzle being disposed generally concentrically with respect to the outer nozzle;
- and
- adjusting a fuel velocity separately through each of the outer nozzle and the inner nozzle to shape a flame extending therefrom.
Dependencies are inferred from the claim text.