Combustion burner and boiler equipped with the same
First Claim
Patent Images
1. A combustion burner comprising:
- a fuel nozzle through which a fuel gas obtained by mixing a fuel and air with each other is blown into a furnace; and
a plurality of splitters configured to divide a fuel gas flow by a widened portion where a width of the widened portion increases as the widened portion extends in a direction of the fuel gas flow, the splitters being disposed in the fuel nozzle on a distal end side of the fuel nozzle such that longitudinal axes of the splitters extend from a side of one wall portion of the fuel nozzle to a side of the other wall portion which is disposed on a side opposite to said one wall portion, whereinthe plurality of the splitters include;
a slitted splitters configured to slit which partially reduces a width of the widened portion at a downstream end in the fuel gas flow, and a non-slitted splitters configured to adjacently to the slitted splitters, the non-slitted splitters having the widened portion, and the widened portion at a downstream end in the fuel gas flow having a fixed width in a direction of the longitudinal axis, andthe slitted splitters include wide portions having no slit.
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Accused Products
Abstract
A combustion burner includes a plurality of splitters (5), (6), (7) configured to divide a fuel gas flow by a widened portion where a width of the widened portion increases as the widened portion extends in the direction of the fuel gas flow. The splitters include: slitted splitters (5), (6) configured to slits (SL) at a downstream end in the fuel gas flow; and non-slitted splitters (7) configured to adjacently to the slitted splitters (5), (6), each of the non-slitted splitters (7) configured to the widened portion at a downstream end in the fuel gas flow, and configured to a fixed width in a direction of the longitudinal axis.
44 Citations
7 Claims
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1. A combustion burner comprising:
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a fuel nozzle through which a fuel gas obtained by mixing a fuel and air with each other is blown into a furnace; and a plurality of splitters configured to divide a fuel gas flow by a widened portion where a width of the widened portion increases as the widened portion extends in a direction of the fuel gas flow, the splitters being disposed in the fuel nozzle on a distal end side of the fuel nozzle such that longitudinal axes of the splitters extend from a side of one wall portion of the fuel nozzle to a side of the other wall portion which is disposed on a side opposite to said one wall portion, wherein the plurality of the splitters include;
a slitted splitters configured to slit which partially reduces a width of the widened portion at a downstream end in the fuel gas flow, and a non-slitted splitters configured to adjacently to the slitted splitters, the non-slitted splitters having the widened portion, and the widened portion at a downstream end in the fuel gas flow having a fixed width in a direction of the longitudinal axis, andthe slitted splitters include wide portions having no slit. - View Dependent Claims (3, 4, 5, 7)
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2. A combustion burner comprising:
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a fuel nozzle through which a fuel gas obtained by mixing a fuel and air with each other is blown into a furnace; and a plurality of splitters configured to divide a fuel gas flow by a widened portion where a width of the widened portion increases as the widened portion extends in a direction of the fuel gas flow, the splitters being disposed in the fuel nozzle on a distal end side of the fuel nozzle such that longitudinal axes of the splitters extend from a side of one wall portion of the fuel nozzle to a side of the other wall portion which is disposed on a side opposite to said one wall portion, wherein the splitter includes a plurality of slitted splitters having a slit which partially reduces a width of the widened portion at a downstream end in the fuel gas flow, and the slitted splitters disposed adjacently to each other respectively include wide surfaces having no slit, and the wide surfaces of the widened portions of the slitted splitters oppositely face each other.
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6. The combustion burner according to Previously Presented, wherein the splitter has a corner-removed portion, where a corner portion is removed, at a downstream end corner portion of the widened portion.
Specification