Emission abatement assembly having a mixing baffle and associated method

摘要

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.

主权项

1. An emission abatement assembly comprising:
a particulate filter, and a fuel-fired burner positioned upstream of the particulate filter, the fuel fired burner comprising:
a housing having an exhaust gas inlet port,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 combustion flow which is advanced through the combustion chamber of the fuel-fired burner, and a bypass flow which is bypassed around the combustion chamber of the fuel-fired burner,a flame catch associated with the shroud and positioned downstream of the combustion chamber, anda mixing baffle positioned downstream of the flame catch and upstream of the particulate filter, the mixing baffle being configured to mix the combustion flow and the bypass flow, and wherein the mixing baffle includes a collector plate fixed to the housing downstream of the flame catch and a diverter plate fixed to the collector plate, and wherein the combustion flow and bypass flow are directed toward upstream faces of the collector and diverter plates upon exiting the shroud and combustion chamber.