US 11,988,421 B2
Heat exchanger for power electronics
Lokanath Mohanta, Syracuse, NY (US); Arindom Joardar, Syracuse, NY (US); Konstantin Borisov, Bloomfield, CT (US); and Ismail Agirman, Bloomfield, CT (US)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on May 13, 2022, as Appl. No. 17/744,074.
Claims priority of provisional application 63/201,968, filed on May 20, 2021.
Prior Publication US 2022/0373236 A1, Nov. 24, 2022
Int. Cl. F25B 39/00 (2006.01); F25B 5/02 (2006.01); F25B 39/02 (2006.01); H05K 7/20 (2006.01)
CPC F25B 39/00 (2013.01) [F25B 5/02 (2013.01); H05K 7/20263 (2013.01); H05K 7/20272 (2013.01); H05K 7/20927 (2013.01); F25B 39/024 (2013.01); F25B 2400/0411 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A heat exchanger comprising a pair of metal plates joined along corresponding mating surfaces, wherein at least one of the metal plates comprises a plurality of connected recesses which form a fluid circuit between the plates when the plates are joined, wherein the fluid circuit comprises an inlet, an inlet manifold, an outlet, an outlet manifold, and a plurality of flowpaths extending between and fluidly connecting the inlet manifold and outlet manifold, wherein one or more of the plurality of flowpaths comprise a fluid passage and a flow constriction, and wherein a ratio of the hydraulic diameter of the flow constriction to the hydraulic diameter of the fluid passage increases with increasing distance from the inlet;
wherein the heat exchanger is configured for operation in a substantially vertical orientation, wherein a major axis of the inlet manifold and a major axis of the outlet manifold extend substantially vertically, and the plurality of fluid passages are arranged one atop of the other, and wherein the inlet is disposed below the outlet such that during operation a flow direction of a refrigerant through the inlet and outlet manifolds opposes gravity.