Patent ID: 8833435
Filing Date: 2014-09-16
Classification: F28D,F28F,H01L

Abstract:
1. A heat sink assembly for cooling an electrical device comprising: a two-phase heat sink thermally coupleable with an electrical device, the two-phase heat sink defining an inlet and an outlet and being capable of supporting boiling of a flow of coolant between the inlet and the outlet; a first plate fluidly coupled with the two-phase heat sink, the first plate defining a first inlet coupled to the outlet from the two-phase heat sink, a first outlet from the first plate, and a first coolant channel extending therebetween, the first plate also defining a second inlet , a second outlet, and a second coolant channel extending therebetween, the first plate further defining a dummy channel positioned between the corresponding first coolant channel and the second coolant channel; a second plate fluidly coupled with the first outlet from the first plate and the second inlet to the first plate, such that the coolant flows from the outlet from the outlet from the two-phase heat sink to the first inlet to the first plate, through the first coolant channel in the first plate, from the first outlet from the first plate to the second plate and through the second plate and subsequently to the second inlet to the first plate, through the second coolant channel and out the second outlet from the second coolant channel in the first plate; a pump fluidly coupled with the two-phase heat sink, the first plate, and the second plate, the pump for driving the coolant through the two-phase heat sink, the first plate, and the second plate; a heat exchange surface extending between the first plate and the second plate; and wherein a gaseous coolant passes the heat exchange surface substantially in a first direction, the coolant flowing from the inlet to the first plate to the outlet from the first plate in a second direction substantially opposite to the first direction.