Roof exhaust

Abstract

A roof exhaust for exhausting gas from a building is provided. The roof exhaust includes: an enclosure including a base and a hollow body extending from said base, the enclosure having side sections and a front section extending between the side sections; a conduit extending within the hollow body along a central axis, the conduit having an inlet connectable to a source of gas and an outlet for exhausting the gas from the conduit; a hood extending in the front section over the outlet, the hood comprising an aperture and being configured to direct gas exiting the outlet through the aperture in a downward direction towards the base; and a baffle extending in the hood and sloped towards at least one of the side sections, thereby being configured to deflect gas exiting the aperture in a lateral direction substantially perpendicular to the downward direction.

1 . A roof exhaust for exhausting gas from a building, the roof exhaust comprising:
 an enclosure comprising a base and a hollow body extending from said base, the enclosure having side sections and a front section extending between the side sections;   a conduit extending within the hollow body along a central axis, the conduit having an inlet connectable to a source of gas and an outlet for exhausting the gas from the conduit;   a hood extending in the front section over the outlet, the hood comprising an aperture and being configured to direct gas exiting the outlet through the aperture in a downward direction towards the base; and   a baffle extending in the hood and sloped towards at least one of the side sections, configured to deflect gas exiting the aperture in a lateral direction substantially perpendicular to the downward direction.   
     
     
         2 . The roof exhaust according to  claim 1 , wherein the baffle has a shape substantially resembling an inversed “V”, thereby deflecting the gas exiting the aperture in two directions opposite one another. 
     
     
         3 . The roof exhaust according to  claim 1 , wherein the baffle defines, together with the hood, at least one channel directing the gas exiting the aperture away from the base. 
     
     
         4 . The roof exhaust according to  claim 1 , wherein the hood comprises a shield extending over the at least one baffle. 
     
     
         5 . The roof exhaust according to  claim 4 , wherein the shield comprises a substantially flat face. 
     
     
         6 . The roof exhaust according to  claim 4 , wherein the shield is substantially parallel to the central axis. 
     
     
         7 . The roof exhaust according to  claim 1 , wherein the baffle comprises an angled plate, the angled plate being angled away from the central axis by approximately 45 degrees. 
     
     
         8 . The roof exhaust according to  claim 1 , wherein the baffle comprises at least two angled plates. 
     
     
         9 . The roof exhaust according to  claim 1 , wherein the baffle comprises a first plate angled between 35 degrees and 55 degrees relative to the central axis, and a second plate extending from the first plate angled between 55 degrees and 90 degrees relative to the central axis. 
     
     
         10 . The roof exhaust according to  claim 1 , wherein the conduit, hood and baffle are positioned to create a helical path for gas traveling through the exhaust. 
     
     
         11 . The roof exhaust according to  claim 1 , wherein the hollow body comprises a height and the baffle is spaced apart from the base by at least one eighth of said height. 
     
     
         12 . The roof exhaust according to  claim 1 , wherein the conduit is isolated from the hollow body. 
     
     
         13 . The roof exhaust according to  claim 1 , wherein the hollow body comprises inner walls and the conduit comprises an outer wall, the roof exhaust comprising an insulating space extending between said inner walls of the hollow body and said outer wall of the conduit, said insulating space being at least partially filled with an insulating material. 
     
     
         14 . The roof exhaust according to  claim 13 , wherein the outer wall of the conduit is sealingly connected to the enclosure. 
     
     
         15 . The roof exhaust according to  claim 1 , further comprising a sealing element removably affixed to the base, said sealing element comprising an aperture through which the conduit extends. 
     
     
         16 . The roof exhaust according to  claim 1 , further comprising a flap hingedly mounted to the conduit, the flap being movable between a closed position where the outlet is blocked by the flap and an opened position where the flap extends away from the outlet in response to a pressure of the gas being exhausted from the conduit, the flap comprising a partial opening thereby allowing condensation to exit the conduit even when the flap is in the closed position. 
     
     
         17 . The roof exhaust according to  claim 16 , wherein the flap is angled to direct condensation building up on the flap to drip through the aperture when the flap is in the closed position. 
     
     
         18 . The roof exhaust according to  claim 17 , further comprising a condensation guide extending from a lower portion of the outlet of the conduit and angled towards the aperture, thereby guiding condensation building up in the conduit to exit through the aperture. 
     
     
         19 . A kit for assembling a roof exhaust for exhausting gas from a building, the kit comprising:
 a conduit having an outer wall, a conduit inlet for connecting to a source of gas and a conduit outlet for exhausting the gas from the conduit;   an enclosure positionable over the conduit, the enclosure comprising:
 a base mountable to a roof of the building; 
 a hollow body extending from said base for housing a portion of the conduit comprising the conduit outlet; 
 a central aperture in the base opening into the hollow body for allowing the conduit to pass therethrough; 
 an enclosure outlet for exhausting gas from the enclosure; 
 a hood positioned to extend over the conduit outlet when the enclosure is positioned over the conduit, the hood comprising the enclosure outlet and being configured to direct gas exiting the conduit outlet through the enclosure outlet in a downward direction towards the base; and 
 a baffle extending in the hood configured to deflect gas exiting the enclosure outlet in a lateral direction substantially perpendicular to the downward direction; and 
   a sealing element affixable to the base for sealingly connecting the conduit to the enclosure, said sealing element comprising:
 a body sized to sealingly cover the central aperture of the enclosure; 
 a connector for connecting the body to the enclosure; and 
 a central aperture in the body for allowing the conduit to pass therethough, the central aperture being sized to sealingly fit around an outer periphery of the conduit. 
   
     
     
         20 . A method for exhausting gas through a roof of a building, the method comprising the steps of:
 channeling gas to an exterior of the building upward through the roof;   inverting the gas approximately 180 degrees in a downward direction towards the roof; and   channeling the gas onto an inverted-V shaped baffle, thereby splitting the gas into at least two streams and exhausting the gas in a direction substantially parallel to the roof.