Intake device for a chimney termination

Abstract

A termination assembly for a chimney is provided having an exhaust layer with an exhaust tube adapted to receive exhaust air from an appliance. An outlet opening of the exhaust tube terminates in the exhaust layer. An intake layer is separated from the exhaust layer. The intake layer has an enclosure defining a positive pressure area within the enclosure and a plurality of openings. Each of openings has a cross-sectional area that decreases from an exterior surface of the enclosure toward the positive pressure area within the enclosure. An intake tube is adapted to receive intake air at an inlet opening positioned in the positive pressure area. The positive pressure area in the intake layer has a pressure greater than the atmospheric pressure outside the termination and in the exhaust layer to prevent flow in the exhaust tube from being reversed.

1 .- 20 . (canceled) 
     
     
         21 . A termination assembly for a chimney comprising:
 an intake tube adapted to receive intake air to be delivered to an appliance;   an intake layer comprising:
 an end plate; 
 an intake plate, wherein the intake tube extends through the intake plate; 
 a first ring connected to the intake plate and enclosing a positive pressure area within an interior of the first ring; and 
 at least one frustoconical ring spaced apart from the first ring to define an exterior opening directing intake air at an angle toward the positive pressure area, wherein the intake plate is mounted to the at least one frustroconical ring opposite the first ring, 
   wherein the intake tube originates in the positive pressure area and extends through the intake plate to deliver the intake air from the positive pressure area at a pressure greater than the atmosphere outside the intake layer.   
     
     
         22 . The termination assembly of  claim 21 , further comprising:
 an exhaust tube adapted to receive exhaust air; and   an exhaust layer positioned adjacent the intake layer, wherein the exhaust tube terminates in the exhaust layer.   
     
     
         23 . The termination assembly of  claim 22 , wherein the exhaust tube extends through the intake layer. 
     
     
         24 . The termination assembly of  claim 22 , wherein the exhaust tube is arranged inside the intake tube. 
     
     
         25 . The termination assembly of  claim 21 , wherein the at least one frustoconical ring is spaced apart from the enclosure portion by a plurality of flaps, wherein the plurality of flaps are oriented radially. 
     
     
         26 . The termination assembly of  claim 25 , wherein the at least one frustoconical ring comprises at least two frustoconical rings spaced apart by the plurality of flaps. 
     
     
         27 . The termination assembly of  claim 22 , wherein the intake layer is separated from the exhaust layer by end plate, wherein the exhaust tube extends through the end plate. 
     
     
         28 . The termination assembly of  claim 21 , wherein the at least one opening comprises a plurality of openings, and
 wherein at least two rings are spaced apart by a plurality of flaps oriented radially,   wherein the plurality of openings is formed between the at least two rings and two adjacent flaps.   
     
     
         29 . The termination assembly of  claim 21 , wherein the at least one frustoconical ring has a circumference being at least one of a circular shape or a polygonal shape along a cross-section. 
     
     
         30 . A termination assembly comprising:
 an intake tube adapted to receive intake air at a first end and deliver the intake air at a second end;   an intake enclosure defining a positive pressure area within the enclosure and the enclosure having a plurality of openings directing the intake air at an angle toward the positive pressure area, wherein the angle is in the range of 20-degrees to 85-degrees to a longitudinal axis of the enclosure; and   wherein the first end of the intake tube is positioned in the positive pressure area,   wherein the positive pressure area in the enclosure has pressure greater than the atmospheric pressure outside the intake enclosure.   
     
     
         31 . The termination assembly of  claim 30 , wherein the plurality of openings is formed by at least one frustoconical ring spaced apart from an enclosure portion, the plurality of openings formed between the at least one frustoconical ring and the enclosure portion, wherein the angle of the plurality of openings is defined by the angle between a lower edge and an upper edge of the at least one frustoconical ring. 
     
     
         32 . The termination assembly of  claim 30 , wherein the at least one frustoconical ring has a circumference being at least one of a circular shape or a polygonal shape along a cross-section. 
     
     
         33 . The termination assembly of  claim 30 , wherein the plurality of openings is formed by a plurality of louvers. 
     
     
         34 . The termination assembly of  claim 33 , wherein the plurality of louvers are formed integrally in the enclosure. 
     
     
         35 . The termination assembly of  claim 30 , wherein each of the plurality of openings has a cross-sectional area that decreases from an exterior surface of the enclosure toward the positive pressure area of the enclosure. 
     
     
         36 . A termination assembly for a chimney, the termination assembly comprising:
 an intake enclosure having a positive pressure area within an interior of the enclosure having pressure greater than the atmospheric pressure outside the, the enclosure having at least one opening formed between at least two rings being spaced apart, wherein the at least one opening has a cross-sectional area that decreases from an exterior surface of the enclosure toward the positive pressure area within the interior of the enclosure; and   an intake tube having an inlet opening positioned in the positive pressure area adapted to receive intake air and the intake tube extending outside the enclosure to a second end.   
     
     
         37 . The termination assembly of  claim 36 , wherein the at least one opening comprises a plurality of openings, and
 wherein at least two rings are spaced apart by a plurality of flaps oriented radially,   wherein the plurality of openings is formed between the at least two rings and two adjacent flaps.   
     
     
         38 . The termination assembly of  claim 36 , wherein the at least two rings have a circumference being at least one of a circular shape or a polygonal shape along a cross-section. 
     
     
         39 . The termination assembly of  claim 36 , further comprising an exhaust region connected to the intake enclosure, an exhaust tube adapted to receive exhaust air from an appliance, wherein an outlet opening of the exhaust tube terminates in the exhaust layer.