Truss Air Manifold Assembly for Underground Disaster Shelters

Abstract

An air manifold assembly for underground shelters which is capable of withstanding extreme weather conditions. The air manifold assembly includes a ventilation pipe, a tank-head-shaped dome, an annular plate, and a plurality of holes. A top end of the ventilation pipe is concentrically positioned within the annular plate. The annular plate is laterally connected about the ventilation pipe and joins the ventilation pipe to the tank-head-shaped dome. The tank-head-shaped dome protects and prevents the clogging and damage of the ventilation pipe. The tank-head-shaped dome is positioned adjacent to the top end of the ventilation pipe and is perimetrically connected to the annular plate. The plurality of holes exposes the ventilation pipe to the external atmosphere. The plurality of holes is radially distributed about the annular plate with each hole normally traversing through the annular plate. Opposite the tank-head-shaped dome, the ventilation pipe is connected to the underground shelter.

What is claimed is: 
     
         1 . A truss air manifold assembly for underground disaster shelters comprises:
 a ventilation pipe;   a tank-head-shaped dome;   an annular plate;   a plurality of holes;   a top end of the ventilation pipe being concentrically positioned within the annular plate;   the annular plate being laterally connected about the ventilation pipe;   the tank-head-shaped dome being positioned adjacent to the top end of the ventilation pipe;   the ventilation pipe being positioned within a concave portion of the tank-head-shaped dome;   the tank-head-shaped dome being perimetrically connected to the annular plate;   the plurality of holes being radially distributed about the annular plate; and   each of the plurality of holes normally traversing through the annular plate.   
     
     
         2 . The truss air manifold assembly for underground disaster shelters as claimed in  claim 1  comprises:
 an internal tube; 
 the internal tube being positioned within the concave portion of the tank-head-shaped dome; 
 the top end of the ventilation pipe concentrically traversing into the internal tube; and 
 the tank-head-shaped dome being terminally connected to the internal tube, opposite the ventilation pipe. 
 
     
     
         3 . The truss air manifold assembly for underground disaster shelters as claimed in  claim 1  comprises:
 an annular gravity dish; 
 the annular gravity dish being positioned adjacent to a bottom end of the ventilation pipe; 
 the ventilation pipe concentrically traversing through annular gravity dish; 
 the annular gravity dish being oriented towards the tank-head-shaped dome; and 
 the annular gravity dish being laterally connected about the ventilation pipe. 
 
     
     
         4 . The truss air manifold assembly for underground disaster shelters as claimed in  claim 1  comprises:
 the ventilation pipe comprises a top tubular portion, a middle tubular portion, and a bottom tubular portion; 
 the top tubular portion being terminally connected to the middle tubular portion; 
 the bottom tubular portion being terminally connected to the middle tubular portion, opposite the top tubular portion; 
 the top tubular portion being positioned at a first obtuse angle relative to the middle tubular portion; 
 the top tubular portion and the bottom tubular portion being oriented parallel to each other; 
 the top tubular portion, the middle tubular portion, and the bottom tubular portion being in fluid communication with each other; and 
 the top tubular portion being positioned adjacent to the tank-head-shaped dome. 
 
     
     
         5 . The truss air manifold assembly for underground disaster shelters as claimed in  claim 4 , wherein the first obtuse angle is 135 degrees. 
     
     
         6 . The truss air manifold assembly for underground disaster shelters as claimed in  claim 1  comprises:
 a plurality of filters; 
 the plurality of filters being radially distributed about the annular plate; and 
 each of the plurality of filters being connected to the annular plate within a corresponding hole from the plurality of holes. 
 
     
     
         7 . The truss air manifold assembly for underground disaster shelters as claimed in  claim 1  comprises:
 an underground disaster shelter; 
 a flexible seismic joint; 
 an annular flange; 
 the annular flange being laterally connected about a bottom end of the ventilation pipe; 
 the flexible seismic joint being concentrically connected to a bottom end of the ventilation pipe by the annular flange; 
 the underground disaster shelter being adjacently connected to the flexible seismic joint, opposite the ventilation pipe; and 
 the ventilation pipe, the flexible seismic joint, and the underground disaster shelter being in fluid communication with each other. 
 
     
     
         8 . The truss air manifold assembly for underground disaster shelters as claimed in  claim 1 , wherein an angle of incidence for the tank-head-shaped dome being less than 15 degrees. 
     
     
         9 . The truss air manifold assembly for underground disaster shelters as claimed in  claim 1  comprises:
 the tank-head-shaped dome comprises an annular sidewall and the concave portion; 
 the annular sidewall being concentrically positioned with the annular plate; 
 the annular sidewall being adjacently connected to the annular plate; 
 the concave portion being positioned adjacent to the annular sidewall, opposite the annular plate; and 
 the concave portion being perimetrically connected to the annular sidewall.