Automotive heat exchanger and power take off assembly

Abstract

A power take off assembly for a heat exchanger for a vehicle. The assembly includes a rectangular frame having passages all the vertical sides to marry with core tubes from the heat exchanger, a face plate with a hole to position the power take off sleeve, a back plate with a similar hole, and a sleeve to allow the power take off shaft to pass though the assembly when installed in a heat exchanger for an automobile/truck. The assembly is pieced together and tabs located on the perimeter of the frame lock the front and back plates into place, the sleeve is inserted in the holes, and the entire assembly is brazed in a one shot process.

What is claimed is:  
     
         1 . A heat exchanger for a vehicle, comprising: 
 a heat source including at least one inlet port and at least one outlet port;    a core portion operably connected to said heat source including a plurality of tubes through which fluid flows and a plurality of fins each of which is disposed between adjacent tubes for facilitating heat exchange of the fluid; and    a power take off assembly disposed in said core portion, said power take off assembly having inlet ports and outlet ports in fluid communication with said plurality of tubes, wherein fluid flowing from said inlet ports traverses an arcuate body.    
     
     
         2 . The heat exchanger according to  claim 1 , wherein said power take off assembly further comprises: 
 a rectangular frame having a plurality of passages defining said inlet port and outlet port along two vertical sides thereof, a sleeve defining said arcuate body, a face plate and a back plate.    
     
     
         3 . The heat exchanger according to  claim 2 , wherein said arcuate body passed through said core portion.  
     
     
         4 . The heat exchanger according to  claim 2 , wherein plurality of passages are operably connected with said plurality of tubes allowing the flow of fluid therethrough.  
     
     
         5 . The heat exchanger according to  claim 2 , wherein said rectangular frame has at least one flange along a perimeter for holding said face plate and said back plate in place during a manufacturing process.  
     
     
         6 . The heat exchanger according to  claim 2 , wherein said face plate has a first hole proximate a center of said front plate and said back plate has a second hole proximate a center of said pack plate, wherein said first and second holes are substantially equal in diameter.  
     
     
         7 . The heat exchanger according to  claim 6 , wherein said face plate and said back plate have at least one of a flange located along the circumference of said first and second holes for guiding said sleeve into position.  
     
     
         8 . The heat exchanger according to  claim 6 , wherein said first hole is circular.  
     
     
         9 . The heat exchanger according to  claim 6 , wherein said first hole is oval.  
     
     
         10 . The heat exchanger according to  claim 6 , wherein said sleeve is tubular having a circumferential geometry equal to that of said first hole in said face plate and said second hole in said back plate.  
     
     
         11 . The heat exchanger according to  claim 10 , wherein said sleeve is secured to said front plate and said back plate via one of welding, brazing, and soldering.  
     
     
         12 . The heat exchanger according to  claim 2 , wherein said assembly is assembled and bonded during a one shot brazing process.  
     
     
         13 . The heat exchanger according to  claim 2 , wherein fluid enters and leaves an internal environment defined by said assembly exclusively through said plurality of passages.  
     
     
         14 . The heat exchanger according to  claim 1 , wherein said heat source is an internal combustion engine.