US 11,808,449 B2
Fresh air intake for low NOx emission furnace
Eric Perez, Hickory Creek, TX (US); Randal Poirier, The Colony, TX (US); Eric Chanthalangsy, Grand Prairie, TX (US); and Steven Schneider, Plano, TX (US)
Assigned to Lennox Industries Inc., Richardson, TX (US)
Filed by Lennox Industries Inc., Richardson, TX (US)
Filed on Jul. 10, 2020, as Appl. No. 16/925,446.
Application 16/925,446 is a continuation of application No. 15/723,340, filed on Oct. 3, 2017, granted, now 10,711,998.
Prior Publication US 2020/0340668 A1, Oct. 29, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. F23D 14/68 (2006.01); F23M 11/04 (2006.01); F23C 9/08 (2006.01); F23D 14/02 (2006.01); F23D 14/70 (2006.01); F23D 14/36 (2006.01); F23L 5/02 (2006.01); F23L 1/00 (2006.01); F23D 14/10 (2006.01); F23D 14/12 (2006.01)
CPC F23D 14/68 (2013.01) [F23C 9/08 (2013.01); F23D 14/02 (2013.01); F23D 14/10 (2013.01); F23D 14/126 (2021.05); F23D 14/36 (2013.01); F23D 14/70 (2013.01); F23L 1/00 (2013.01); F23L 5/02 (2013.01); F23M 11/042 (2013.01); F23D 2207/00 (2013.01); F23D 2900/00011 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A furnace fresh-air intake comprising:
an outer cover having a front panel and a bottom panel, the front panel comprising a window formed in a face thereof;
a supply line fluidly coupled to the outer cover;
a baffle disposed inside the outer cover and connected at a junction of the bottom panel and the front panel, the baffle extending in an angled arrangement upwardly and inwardly into the outer cover providing a barrier so as to prevent infiltration of moisture into the supply line; and
wherein the angled arrangement provides for an air gap formed by an upper edge of the baffle and an interior surface of a top panel coupled to the pair of side panels of the outer cover.