Apparatus for Directing Exhaust Flow through a Fuel-Fired Burner of an Emission Abatement Assembly
First Claim
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1. An emission abatement assembly comprising:
- a fuel-fired burner having a housing and a combustion chamber positioned within the housing, the combustion chamber comprising a wall circumscribing a space configured to hold a burner flame, andan exhaust gas inlet pipe having an elbow at an outlet end positioned within the housing, the elbow being positioned to direct an entire flow of exhaust gas in a direction toward an interior wall of the housing such that the entire flow of exhaust gas exiting the elbow impinges upon the interior wall prior to reaching the wall and space of the combustion chamber.
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Abstract
An emission abatement assembly includes a fuel-fired burner having a housing and a combustion chamber positioned within the housing. The combustion chamber includes a wall circumscribing a space. The emission abatement assembly further includes an exhaust gas inlet pipe having an elbow at an outlet end positioned within the housing. The elbow is positioned to direct an entire flow of exhaust gas in a direction toward an interior wall of the housing such that the entire flow of exhaust gas exiting the elbow impinges upon the interior wall prior to reaching the wall and space of the combustion chamber.
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Citations
11 Claims
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1. An emission abatement assembly comprising:
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a fuel-fired burner having a housing and a combustion chamber positioned within the housing, the combustion chamber comprising a wall circumscribing a space configured to hold a burner flame, and an exhaust gas inlet pipe having an elbow at an outlet end positioned within the housing, the elbow being positioned to direct an entire flow of exhaust gas in a direction toward an interior wall of the housing such that the entire flow of exhaust gas exiting the elbow impinges upon the interior wall prior to reaching the wall and space of the combustion chamber. - View Dependent Claims (2, 3)
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4. 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, (ii) a combustion chamber having a shroud secured thereto, the combustion chamber and the shroud cooperate to separate an entire flow of exhaust gas entering the housing 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, (iii) an exhaust gas inlet pipe extending into the housing, the exhaust gas inlet pipe having an elbow at an outlet end positioned within the housing, the elbow being positioned to direct the entire flow of exhaust gas entering the housing in a direction toward an interior wall of the housing such that exhaust gas exiting the elbow impinges upon the interior wall prior to reaching the combustion chamber and the shroud, and (iv) a mixing baffle 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 (5, 6, 7, 8)
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9. An emission abatement assembly, comprising:
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a fuel-fired burner having a housing and a combustion chamber positioned within the housing, and an exhaust gas inlet pipe having an elbow at an outlet end positioned within the housing, the elbow being positioned to direct exhaust gas in a direction toward an interior wall of the housing to impinge upon the interior wall to induce a swirling flow pattern in the exhaust gas exiting the elbow prior to reaching the combustion chamber. - View Dependent Claims (10, 11)
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Specification