Northrop Grumman Systems Corporation

Keith R Kirkwood

Stanley Katsuyoshi Wakamiya

Martin Brokner Christiansen

Leonard George Chorosinski

H Craig Heffner

Harlan Craig Heffner

An apparatus for providing immersion cooling in a circuit card environment includes a circuit card having first and second longitudinally spaced circuit card subassemblies, connected together into a single circuit card oriented substantially in a lateral-longitudinal plane. The first and second circuit card subassemblies have first and second operating temperatures, respectively, which are different from one another. A thermal energy transfer device is operatively connected to an area of the circuit card correlated with a selected one of the first and second circuit card subassemblies. The thermal energy transfer device at least partially induces the respective one of the first and second operating temperatures to the selected circuit card subassembly. The thermal energy transfer device transversely overlies at least a supermajority of the selected circuit card subassembly and is laterally spaced from the other circuit card subassembly. A system and method for providing immersion cooling are also provided.

Immersion cooling temperature control method, system, and apparatus

An apparatus for, and method of, providing a desired temperature-differential circuit card environment includes a plurality of card units. Each card unit comprises a first thermal plate having front and back first plate sides oriented in a lateral-longitudinal plane, the first thermal plate operating at a first plate temperature. A second thermal plate has front and back second plate sides oriented in the lateral-longitudinal plane, the second thermal plate operating at a second plate temperature. A coupler is oriented in the lateral-longitudinal plane and is connected to front and/or back first plate sides and to the front and/or back second plate sides to form a card unit. The card units are arranged in a transversely oriented stack with the front first and second plate sides of a second card unit being directly transversely adjacent the back first and second plate sides of the first card unit.

Apparatus and method for providing a temperature-differential circuit card environment

A circuit card assembly includes a substrate having longitudinally spaced first and second substrate end edges and transversely spaced top and bottom substrate surfaces. The top and/or bottom substrate surface has first, second, and third substrate regions. The first substrate region is directly laterally adjacent the first substrate side edge. The third substrate region is directly laterally adjacent the second substrate side edge. The second substrate region is located between the first and third substrate regions. At least one circuit trace is located on the selected substrate surface. The portion of the circuit trace in the first substrate region is made of only a first material. The portion of the circuit trace in the third substrate region is made of only a second material. The portion of the circuit trace in the second substrate region is made of both the first and second materials.

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Columbia, MD, United States of America

Keith R Kirkwood