Patent ID: 8413712

Claim:
An impingement cooling device comprising: at least a first level structure adjacent an impingement gap, the impingement gap being located between the cooling device and at least one heat source to be cooled, the first level structure comprising: a layer of substantially parallel inlets and outlets in a distributed array adjacent the impingement gap for supplying and removing fluid for impinging directly on at least one surface of the heat source, wherein outlet diameters are 25-30% larger than inlet diameters, a channel layer of interdigitated branched channels to supply the inlets with a fluid and drain the outlets of the fluid, said channels being formed by at least one lateral wall separating inlet and outlet paths in the channel layer; and a second level structure in contact with the first level structure, wherein the second level structure comprises a scaled replica of the first level structure, wherein the second level structure is larger than the first level structure by a predetermined factor selected to optimize fluid flow.