Patent ID: 7944694

Claim:
A liquid cooling apparatus for at least one electronic system chassis, the liquid cooling apparatus comprising: at least one chassis-level manifold assembly, each chassis-level manifold assembly being configured to facilitate liquid cooling of a respective electronic system chassis of the at least one electronic system chassis; wherein each chassis-level manifold assembly comprises a first coolant path and a plurality of second coolant paths, the first coolant path being isolated from the plurality of second coolant paths by a heat exchanger, the heat exchanger facilitating transfer of heat from coolant within the second coolant paths to coolant within the first coolant path, and wherein each second coolant path of the plurality of second coolant paths is isolated from the other second coolant paths, and coolant passing through each second coolant path facilitates cooling of at least one respective component of the respective electronic system chassis, and wherein when the liquid cooling apparatus is operational, each second coolant path forms a portion of a respective closed loop coolant path of a plurality of closed loop coolant paths extending between the chassis-level manifold assembly and the respective electronic system chassis; and wherein each respective electronic system chassis comprises a plurality of blade units, and wherein for each chassis-level manifold assembly the liquid cooling apparatus further comprises tubing coupling each second coolant path of the plurality of second coolant paths of the chassis-level manifold assembly in fluid communication with a respective blade unit of the plurality of blade units of the respective electronic system chassis, and wherein at least one blade unit of the at least one electronic system chassis is an immersion-cooled blade with multiple components thereof immersion-cooled by coolant flowing through at least one respective second coolant path of the plurality of second coolant paths of the at least one chassis-level manifold assembly.