Air handling unit

Abstract

An air handling unit having multiple fans includes a damper assembly to limit recirculation of air past a non-operating fan. The damper assembly includes a panel adjustably positioned between two channels to allow the discharge of the multiple fans to be substantially opened or to be substantially closed.

1 . A damper assembly for an air handling unit comprising:
 a frame adapted to be mounted in an opening in the air handling unit;   at least one panel, the at least one panel being configured to be moveable within the frame; and   the at least one panel is positionable between a first position and a second position in the frame, the first position of the at least one panel corresponding to a position to substantially obstruct a portion of the opening associated with a fan of the air handling unit and the second position of the at least one panel corresponding to a position to enable unobstructed access to the portion of the opening associated with the fan of the air handling unit.   
   
   
       2 . The damper assembly of  claim 1 , wherein the at least one panel comprises a pair of panels, the pair of panels being configured to be positionable in the frame in an overlapping position. 
   
   
       3 . The damper assembly of  claim 3 , wherein each panel of the pair of panels comprises a tab, the tab being configured and positioned to assist with movement of the panel in the frame. 
   
   
       4 . The damper assembly of  claim 4 , wherein one of the panels of the pair of panels comprises a protruding portion, the protruding portion being configured and positioned to overlap the tab of the other panel of the pair of panels. 
   
   
       5 . The damper assembly of  claim 1 , wherein the frame comprises a plurality of struts. 
   
   
       6 . The damper assembly of  claim 5 , wherein the frame further comprises two channels separated by the plurality of struts. 
   
   
       7 . The damper assembly of  claim 1 , further comprising a device to secure the at least one panel in the frame, the device being configured to substantially prevent movement of the at least one panel. 
   
   
       8 . A damper assembly for an air handling unit comprising:
 a frame adapted to be mounted in an opening in the air handling unit;   at least one closure member, the at least one closure member being configured to be selectively retracted and expanded; and   the at least one closure member is positionable between a first position and a second position in the frame, the first position of the at least one closure member corresponding to a position to substantially obstruct a portion of the opening associated with a fan of the air handling unit and the second position of the at least one closure member corresponding to a position to enable unobstructed access to the portion of the opening associated with the fan of the air handling unit.   
   
   
       9 . The damper assembly of  claim 8 , wherein the at least one closure member comprises interconnected elongated segments. 
   
   
       10 . The damper assembly of  claim 8 , wherein the at least one closure member constitutes two closure members configured and positioned to obstruct or enable unobstructed access to the opening and portions of the opening. 
   
   
       11 . The damper assembly of  claim 8 , wherein the closure member is further configured to be rolled into a cylinder. 
   
   
       12 . An air handling unit comprising:
 a housing, the housing comprising a plurality of openings to enable flow of air through the housing;   a pair of fans positioned in the housing,   at least one wall, the at least one wall being configured and positioned in the housing to separate the pair of fans and to define an individual discharge opening and inlet for each fan of the pair of fans;   a damper assembly comprising:
 a frame mounted in an opening of the plurality of openings; 
 at least one panel, the at least one panel being configured to be moveable within the frame; and 
 the at least one panel is positionable between a first position and a second position in the frame, the first position of the at least one panel being configured to substantially obstruct a discharge opening of a fan of the pair of fans and the second position of the at least one panel being configured to enable unobstructed access to the discharge opening of the fan of the pair of fans. 
   
   
   
       13 . The air handling unit of  claim 12 , wherein a width of the at least one panel is less than or equal to a distance between the discharge openings for the pair of fans. 
   
   
       14 . The air handling unit of  claim 12 , wherein the at least one panel comprises a pair of panels. 
   
   
       15 . The air handling unit of  claim 12 , wherein the damper assembly comprises a member positioned in the frame between the discharge openings for the pair of fans. 
   
   
       16 . The air handling unit of  claim 14 , wherein each panel of the pair of panels comprises a tab, the tab being configured and positioned to assist with movement of the panel in the frame. 
   
   
       17 . The air handling unit of  claim 16 , wherein one panel of the pair of panels comprises a protruding portion, the protruding portion being configured and positioned to overlap the tab of the other panel of the pair of panels. 
   
   
       18 . The air handling unit of  claim 12 , wherein the frame comprises a plurality of struts and two channels separated by the plurality of struts. 
   
   
       19 . The air handling unit of  claim 18 , wherein the frame further comprises a plurality of posts connected to the housing. 
   
   
       20 . The air handling unit of  claim 12 , wherein the damper assembly further comprises a member configured and positioned to obstruct a portion of the opening near the discharge openings for the pair of fans.