Cooling assembly with successively contracting and expanding coolant flow

Abstract

A fluid heat exchanger assembly having an upper wall and a lower wall extending between the inlet and the outlet for establishing a direction of flow to cool an electronic device. A plurality of projections extend linearly transversely across the direction of flow to define rows of projections with linear cavities between adjacent projections so that fluid flows into and out of the cavities as the fluid flows across the rows of projections for contraction and expansion of the coolant flow to maximize heat transfer. The projections may be rectangular, triangular or convex, as viewed in cross section.

1 . A fluid heat exchanger assembly for cooling an electronic device with a cooling fluid supplied from a heat extractor (R, F) and comprising; 
 a housing having an inlet and an outlet and upper and lower walls extending between said inlet and said outlet for establishing a direction of flow from said inlet to said outlet, and    a plurality of projections extending from one of said walls to distal extremities and said distal extremities extending linearly transversely across said direction of flow and spaced from the other wall and from one another to define linear cavities between adjacent projections so that fluid flows into and out of said cavities as the fluid flows across said projections,    said projections define a flow space extending straight over said projections and along said direction of flow, and    each of said projections presenting sides as viewed in cross section disposed at an obtuse angle relative to the direction of flow.    
   
   
       2 . An assembly as set forth in  claim 1  wherein each of said projections is two sided as viewed in cross section to present one corner defining an apex of a triangular shaped projection.  
   
   
       3 . An assembly as set forth in  claim 1  wherein each of said projections is convex as viewed in cross section to present a curve shaped projection.  
   
   
       4 . An assembly as set forth in  claim 1  wherein each of said cavities is concave as viewed in cross section and spaced from one another to present a rectangularly shaped projection.  
   
   
       5 . An assembly as set forth in  claim 1  wherein said projections extending from said walls are mirror images of one another.