Emission abatement assembly having a mixing baffle and associated method
First Claim
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1. An emission abatement assembly comprising:
- a particulate filter, anda fuel-fired burner positioned upstream of the particulate filter, the fuel fired burner comprising;
(i) a housing having an exhaust gas inlet port,(ii) a combustion chamber having a shroud secured thereto, the combustion chamber and the shroud cooperate to separate a flow of exhaust gas entering the housing through the exhaust gas inlet port into (a) a combustion flow which is advanced through the combustion chamber of the fuel-fired burner, and (b) a bypass flow which is bypassed around the combustion chamber of the fuel-fired burner, and(iii) a mixing baffle including a collector plate and diverter plate positioned downstream of the combustion chamber and upstream of the particulate filter, the mixing baffle being configured to mix the combustion flow and the bypass flow.
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Abstract
An emission abatement assembly includes a fuel-fired burner having a combustion chamber and a particulate filter positioned downstream of the fuel-fired burner. A mixing baffle is positioned between the fuel-fired burner and the particulate filter.
70 Citations
20 Claims
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1. An emission abatement assembly comprising:
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a particulate filter, and a fuel-fired burner positioned upstream of the particulate filter, the fuel fired burner comprising; (i) a housing having an exhaust gas inlet port, (ii) a combustion chamber having a shroud secured thereto, the combustion chamber and the shroud cooperate to separate a flow of exhaust gas entering the housing through the exhaust gas inlet port into (a) a combustion flow which is advanced through the combustion chamber of the fuel-fired burner, and (b) a bypass flow which is bypassed around the combustion chamber of the fuel-fired burner, and (iii) a mixing baffle including a collector plate and diverter plate positioned downstream of the combustion chamber and upstream of the particulate filter, the mixing baffle being configured to mix the combustion flow and the bypass flow. - View Dependent Claims (2, 3, 4, 5, 16, 17, 18)
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6. An emission abatement assembly,
a fuel-fired burner having a combustion chamber, a particulate filter positioned downstream of the fuel-fired burner, and a mixing baffle comprising (i) a collector plate having a hole defined therein, (ii) a perforated ring secured to the collector plate, and (iii) a diverter plate secured to the perforated ring, wherein the mixing baffle is positioned between the fuel fired burner and the particulate filter such that both a flow of exhaust gas advancing through the combustion chamber and a flow of exhaust gas bypassing the combustion chamber are advanced through the hole in the collector plate.
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9. A method of operating a fuel-fired burner of an emission abatement assembly, the method comprising the steps of:
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advancing a flow of exhaust gas into a housing of the fuel-fired burner, separating the flow of exhaust gas into (i) a combustion flow which is advanced through a combustion chamber of the fuel-fired burner, and (ii) a bypass flow which is bypassed around the combustion chamber of the fuel-fired burner, and directing the combustion flow and the bypass flow radially outwardly with a flow mixer located downstream of the combustion chamber. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification