Ventilated transformer enclosure

Abstract

A transformer enclosure includes a base structure, a wall secured to the base structure, and an airflow aperture located in a lower portion of the wall. A roof structure is secured to the wall and has an overhang portion extending beyond the wall outward from the enclosure. The overhang portion has a roof top panel and a roof bottom panel. The roof bottom panel has a roof airflow aperture. The transformer enclosure can include means for enclosing a volume and airflow means for cooling a transformer within the enclosed volume, where the airflow means includes a plurality of opposing channels.

1 . A transformer enclosure, comprising: 
 a base structure;    a wall secured to the base structure;    an airflow aperture located in a lower portion of the wall; and    a roof structure secured to the wall and having an overhang portion extending beyond the wall outward from the enclosure, the overhang portion having a roof top panel and a roof bottom panel, the roof bottom panel having a roof airflow aperture.    
     
     
         2 . The transformer enclosure of  claim 1 , comprising: 
 a plurality of walls, at least one including the airflow aperture at the lower portion.    
     
     
         3 . The enclosure of  claim 1 , wherein at least one of the airflow aperture and the roof airflow aperture includes a plurality of airflow apertures.  
     
     
         4 . The transformer enclosure of  claim 1 , wherein at least one of the airflow aperture and the roof airflow aperture includes a ventilation panel having a plurality of airflow apertures.  
     
     
         5 . The transformer enclosure of  claim 1 , wherein at least one of the airflow aperture and the roof airflow aperture includes offset members.  
     
     
         6 . The transformer enclosure of  claim 1 , wherein at least one of the airflow aperture and the roof airflow aperture includes a plurality of opposing channels.  
     
     
         7 . The transformer enclosure of  claim 1 , wherein at least one of the airflow aperture and the roof airflow aperture includes an airflow adjustment means.  
     
     
         8 . The transformer enclosure of  claim 7 , wherein the airflow adjustment means is motor driven.  
     
     
         9 . The transformer enclosure of  claim 1 , comprising: 
 a fan configured to increase airflow through the enclosure.    
     
     
         10 . A transformer enclosure, comprising: 
 means for enclosing a volume; and    airflow means for cooling a transformer within the enclosed volume, wherein the airflow means includes an airflow aperture in an underside of an overhang portion of a roof structure of the enclosure.    
     
     
         11 . The transformer enclosure of  claim 9 , comprising: 
 means for supporting the transformer within the enclosed volume.    
     
     
         12 . The transformer enclosure of  claim 9 , wherein the airflow means comprises: 
 an airflow aperture located in a wall of the enclosure.    
     
     
         13 . The transformer enclosure of  claim 9 , wherein the airflow means comprises: 
 a fan configured to increase airflow through the enclosure.    
     
     
         14 . The transformer enclosure of  claim 9 , wherein the means for enclosing a volume comprises: 
 a plurality of walls, at least one including the airflow aperture at the lower portion.    
     
     
         15 . The transformer enclosure of  claim 9 , wherein the airflow means comprises: 
 a plurality of airflow apertures.    
     
     
         16 . The transformer enclosure of  claim 9 , wherein the airflow means comprises: 
 a ventilation panel having a plurality of airflow apertures.    
     
     
         17 . The transformer enclosure of  claim 9 , wherein the airflow means comprises: 
 offset members.    
     
     
         18 . The transformer enclosure of  claim 1 , wherein the airflow means comprises: 
 a plurality of opposing channels.    
     
     
         19 . The transformer enclosure of  claim 9 , wherein the airflow means comprises: 
 an airflow adjustment means.    
     
     
         20 . The transformer enclosure of  claim 19 , wherein the airflow adjustment means is motor driven.  
     
     
         21 . The transformer enclosure of  claim 10 , wherein the enclosure meets NEMA 250-1997 standards.  
     
     
         22 . The transformer enclosure of  claim 21 , wherein the enclosure is Type 3R.  
     
     
         23 . A transformer enclosure, comprising: 
 means for enclosing a volume; and    airflow means for cooling a transformer within the enclosed volume,    wherein the airflow means includes a plurality of opposing channels.