Patent ID: 8081473

Claim:
A cooling apparatus for an electronic device, comprising: a plurality of heat producing electronic devices affixed to a wiring substrate, the heat producing electronic devices each including outer edges, a raised portion and an unraised portion; a plurality of heat transfer assemblies each including a first thermal interface communicating with the unraised portion and adjacent an outer edge of the heat producing electronic devices, and a second thermal interface communicating with the raised portion of the heat producing electronic devices, the second thermal interface having outer edges wherein an outer edge of the second thermal interface and a side outer edge of the heat producing electronic device define a region therebetween on the unraised portion; heat spreaders being part of the heat transfer assemblies and thermally communicating with and coupled to the second thermal interfaces of the heat transfer assemblies, the heat transfer assemblies thermally communicating with the heat producing electronic devices for transferring heat from the heat producing electronic devices to the heat transfer assemblies, the plurality of heat producing electronic devices and respective heat transfer assemblies being positioned on the wiring substrate having the regions at least partially overlapping; a heat conduit thermally communicating with the heat transfer assemblies, the heat conduit circulating thermally conductive fluid therethrough in a closed loop for transferring heat to the fluid from the heat transfer assemblies via the heat spreader; a thermally conductive support structure supporting the heat conduit, the support structure thermally communicating with the heat transfer assemblies via the heat spreaders for transferring heat to the fluid of the heat conduit from the support structure; wherein the support structure and the heat spreaders of the thermal transfer assemblies mechanically mate and thermally couple for transferring heat from the heat spreaders to the support structure; wherein the heat conduit is a serpentine pipe, and the serpentine pipe and the support structure wind between rows of the heat transfer assemblies coupled to the heat producing electronic devices for a specified distance, such that the heat conduit extends in mating relation with the support structure along the specified distance; and the support structure including a base portion being beneath the heat producing electronic devices, the heat transfer assemblies, and the heat conduit, and the base portion of the support structure being configured to not be in overlapping relation with the heat producing electronic devices.