US 11,698,233 B2
Reduced pressure drop cold plate transition
Mark D. Schultz, Ossining, NY (US)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Dec. 26, 2020, as Appl. No. 17/134,387.
Prior Publication US 2022/0205740 A1, Jun. 30, 2022
Int. Cl. F28F 3/12 (2006.01); G06F 30/28 (2020.01); H01L 23/473 (2006.01); H05K 7/20 (2006.01); G06F 113/08 (2020.01)
CPC F28F 3/12 (2013.01) [G06F 30/28 (2020.01); H01L 23/473 (2013.01); H05K 7/20254 (2013.01); H05K 7/20272 (2013.01); G06F 2113/08 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A cold plate apparatus comprising:
walls that enclose an interior volume that includes an inlet plenum, an outlet plenum, and an active volume fluidly connecting the inlet plenum to the outlet plenum;
wherein the walls define an inlet opening into the inlet plenum and an outlet opening from the outlet plenum;
wherein the walls define an outlet transition that connects the outlet plenum to the outlet opening;
wherein the outlet transition defines a smoothly curving flow path from a direction along a long dimension of the outlet plenum, which is parallel to a plane defined by the outlet opening, to a direction along a centerline of the outlet opening, which is at an angle from the plane defined by the outlet opening;
wherein the outlet transition provides a smooth variation of cross-sectional area from the outlet plenum to the outlet opening;
wherein cross-sections of the outlet transition, taken in planes perpendicular to the centerline of the outlet opening, vary in radius from the bottom surface of the outlet plenum toward the upper surface of the outlet plenum.