Burner port shield

F - Mech Eng,Light,Heat,Weapons – 28 – F

Patent

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Details

F28F 17/00 (2006.01) F24H 9/00 (2006.01)

Patent

CA 2532678

A shield for placement around burner ports in a hot air furnace for reducing turbulence in the flow of secondary combustion air entering a heat exchanger. The shield also provides for intercepting moisture that condenses along the walls of the vertically oriented heat exchanger. The heat exchanger is part of a furnace. The drip shield includes a plate having a longitudinal axis and a plurality of through-openings placed in the plate along and/or parallel to its longitudinal axis. The through-openings are spaced apart so as to be positioned between and aligned with burner ports and respective heat exchanger tube inlets of the heat exchanger. The plate is preferably profiled to have a peak to encourage condensate run-off with the plurality of through-openings being placed along or generally parallel to the peak of the plate.

Un écran à placer autour d'orifices de combustion de chaudière à air chaud afin de réduire la turbulence dans le débit d'air de combustion secondaire entrant un échangeur de chaleur. L'écran fournit aussi l'interception d'humidité qui se condense le long des parois de l'échangeur de chaleur à orientation verticale. L'échangeur de chaleur fait partie de la chaudière. L'écran anti- égouttures comprend une plaque munie d'un axe longitudinal et de plusieurs ouvertures traversantes placées sur la plaque le long de on axe longitudinal et/ou parallèles à celui-ci. Les ouvertures traversantes sont espacées afin d'être positionnées entre les orifices de combustion et de s'aligner sur les orifices de combustion et les entrées respectives des tubes de l'échangeur de chaleur. La plaque est de préférence profilée afin d'avoir un pic pour encourager l'écoulement du condensat avec les plusieurs ouvertures traversantes étant placées le long du pic de la plaque ou généralement parallèlement à celui-ci.

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