Patent ID: 8082978
Filing Date: 2011-12-27
Classification: F28D,F28F,H01L

Abstract:
1. A heat management device, comprising: a global heat dissipater structure disposed on a portion of a heat generating structure, wherein the heat from the heat generating structure heats the global heat dissipater structure, and wherein the global heat dissipater structure includes global heat dissipater conduits; a first fluid directed to circulate in the global heat dissipater conduit to dissipate heat from the heat generating structure; a local heat dissipater structure disposed in thermal communication with the global heat dissipater and with at least one hot spot of the heat generating structure, wherein the local heat dissipater structure includes local heat dissipater conduits that are adjacent at least one hot spot and the global heat dissipater conduits, wherein the local heat dissipater conduit includes a first constricted cavity in a location of the local heat dissipater conduit that is adjacent a first hot spot, wherein the local heat dissipater conduit is configured to flow the second fluid through the first constricted cavity to dissipate heat at the hot spot, and wherein a portion of the first constricted cavity is defined by a wall adjacent at least one hot spot, wherein the local heat dissipater conduit that includes a first let-structure configured to produce at least one microjet or spray of the second fluid that impinges upon a first hot spot to remove heat at the hot spot wherein the local heat dissipater conduit is configured to flow the second fluid through the local heat dissipater conduit after impinging upon the hot spot, wherein the first jet-structure and the first constricted cavity are different, but adjacent areas of the heat management device such that the second fluid flows from the first let-structure to the first constricted cavity to dissipate heat from the hot spot; and a second fluid directed to circulate in the local heat dissipater conduit to dissipate heat from at least one hot spot, wherein the heat of the second fluid is dissipated to the first fluid in the global heat dissipater conduits, and wherein the first fluid and the second fluid are not mixed with one another.