Thin Foil Encapsulated Assemblies

Abstract

An injector tube assembly that includes thin foil insulation around a receiver tube and a relatively rigid housing secured to the thin foil and bearing on tube insulation while also being packed with junction insulation.

1 . A tube junction housing comprising:
 a receptacle portion defining an insulation space;   a receptacle portion lip joined to the injector housing and defining an injector flange opening; and   a base flange joined to the a receptacle portion and including a thin-walled connection surface.   
     
     
         2 . The tube junction housing of  claim 1 , wherein the
 receptacle housing portion defines an injector tube axis through the injector flange opening and the base flange is substantially arcuate to define a receiver tube axis spaced apart from the base flange.   
     
     
         3 . The tube junction housing of  claim 2 , wherein the injector tube axis and the receiver tube are disposed to define an angle of less than 90°. 
     
     
         4 . The tube junction housing of  claim 1 , wherein the receptacle portion lip defines connector openings. 
     
     
         5 . The tube junction housing of  claim 1 , wherein the base flange extends outwardly from the receptacle portion. 
     
     
         6 . The tube junction housing of  claim 1 , and further comprising:
 an injector flange disposed in the tube junction housing adjacent to and substantially co-planar with the injector flange opening.   
     
     
         7 . The tube junction housing of  claim 1 , and further comprising:
 insulation disposed in the insulation space.   
     
     
         8 . A tube junction assembly comprising:
 a receiver tube defining a receiver tube axis;   tube insulation substantially surrounding the receiver tube; and   a thin foil spaced apart from the receiver tube and substantially surrounding the tube insulation;   an injector tube joined to the receiver tube at a tube junction and defining an injector tube axis; and   a tube junction housing having;
 a receptacle portion defining an insulation space, and an injector opening, and a base flange joined to the receptacle portion and including a thin foil connection surface joined to the thin foil, and the base flange rests on the tube insulation and is spaced apart from the receiver tube. 
   
     
     
         9 . The tube junction assembly of  claim 8 , wherein the base flange is substantially arcuate relative to, and spaced apart from, the receiver tube axis. 
     
     
         10 . The tube junction assembly of  claim 9 , wherein the injector tube axis and the receiver tube axis are disposed to define an angle of less than 90°. 
     
     
         11 . The tube junction assembly of  claim 8 , wherein the receptacle portion lip defines connector openings. 
     
     
         12 . The tube junction assembly of  claim 8 , wherein the base flange extends outwardly from the receptacle portion. 
     
     
         13 . The tube junction assembly of  claim 8 , and further comprising:
 an injector flange disposed in the receptacle portion adjacent to and substantially co-planar with the injector flange opening.   
     
     
         14 . The tube junction assembly of  claim 8 , and further comprising:
 junction insulation disposed in the insulation space.