Return air pressure relief vent

Abstract

A return air pressure relief vent comprising a baffle structure having two ports, disposed in a partition between two volumes of air and including a plurality of passages that each encompass a straight line extending between the two volumes of air, the plurality of passages structured and arranged to accommodate a pressure balancing flow of air between the two volumes of air while restricting the passage of sound and light.

What is claimed is:  
     
         1 . A return air pressure relief vent comprising: 
 a baffle structure having two ports and disposed in a partition between two volumes of air, each of said two ports confronting each of said two volumes of air respectively; and    said baffle structure including a plurality of passages, each of said plurality of passages encompasses a straight line extending between said two volumes of air, said plurality of passages structured and arranged to accommodate a pressure balancing flow of air between said two volumes of air while restricting the passage of sound and light.    
     
     
         2 . The return air pressure relief vent of  claim 1  in which said partition is a wall separating two rooms or spaces within a building and where each of said two rooms or spaces includes one of said two volumes of air respectively.  
     
     
         3 . The return air pressure relief vent of  claim 2  where the return air pressure relief vent permits 150 cubic feet per minute of air passage while limiting the pressure difference between the two volumes of air to less than 2.5 Pascals.  
     
     
         4 . The return air pressure relief vent of  claim 1  in which the baffle structure includes a frame configured to attach the plurality of passages to the partition.  
     
     
         5 . The return air pressure relief vent of  claim 4  in which said frame includes an exterior surface extending between said two ports.  
     
     
         6 . The return air pressure relief vent of  claim 5  in which said exterior surface comprises one or more rectangular and flat surfaces.  
     
     
         7 . The return air pressure relief vent of  claim 5  in which said exterior surface comprises one or more curved surfaces.  
     
     
         8 . The return air pressure relief vent of  claim 5  in which said exterior surface includes two sections which telescope into one another to adjust the width dimension of said frame.  
     
     
         9 . The return air pressure relief vent of  claim 4  in which said frame includes a grill covering at least one of the two said ports.  
     
     
         10 . The return air pressure relief vent of  claim 9  in which said grill includes a baffle member.  
     
     
         11 . The return air pressure relief vent of  claim 10  in which said baffle member includes a plurality of louvers.  
     
     
         12 . The return air pressure relief vent of  claim 9  in which said grill includes a screen.  
     
     
         13 . The return air pressure relief vent of  claim 1  in which said baffle structure includes a honeycomb structure, said honeycomb structure including at least some of the said plurality of passages.  
     
     
         14 . The return air pressure relief vent of  claim 1  in which at least some of said plurality of passages have a circular cross-section.  
     
     
         15 . The return air pressure relief vent of  claim 1  in which at least some of said plurality of passages are not parallel to other of said plurality of passages.  
     
     
         16 . The return air pressure relief vent of  claim 1  in which at least some of said plurality of passages are not perpendicular to a plane defined by the exterior surfaces of the partition.  
     
     
         17 . The return air pressure relief vent of  claim 1  in which said frame is made from sheet metal.  
     
     
         18 . The return air pressure relief vent of  claim 1  in which at least some of said plurality of passages have a cross-section that varies in size or shape along a center line of the passage extending between both ports of the baffle structure.  
     
     
         19 . The return air pressure relief vent of  claim 1  in which at least some of said plurality of passages have a cross-section not equal to the size and shape of a cross-section of other of said plurality of passages.  
     
     
         20 . The return air pressure relief vent of  claim 1  in which said plurality of passages are constructed from a honeycomb structure manufactured from cardboard.  
     
     
         21 . The return air pressure relief vent of  claim 1  in which at least some of said plurality of passages have a center line and an interior wall that are straight and parallel to each other.  
     
     
         22 . The return air pressure relief vent of  claim 1  in which at least some of said plurality of passages have a center line and an interior wall that are not parallel to each other.  
     
     
         23 . The return air pressure relief vent of  claim 1  in which at least some of said plurality of passages have a center line or an interior wall that is straight.  
     
     
         24 . The return air pressure relief vent of  claim 1  in which at least some of said plurality of passages have a center line or an interior wall that is not straight.