Patent ID: 8246325
Filing Date: 2012-08-21
Classification: H01L

Abstract:
1. A miniaturized liquid cooling apparatus, comprising: a casing defining a receiving room therein; a diaphragm arranged in the receiving room of the casing, the diaphragm dividing the receiving room of the casing into a first chamber and a second chamber isolated from each other, the first chamber and the second chamber being located at top and bottom sides of the diaphragm, respectively; a partition plate arranged in the first chamber of the casing and spaced from the diaphragm by a predetermined distance, the partition plate dividing the first chamber of the casing into an upper region spaced away from the diaphragm and a lower region adjacent to the diaphragm, the lower region of the first chamber being filled with a working fluid, the partition plate comprising a nozzle; and a piezoelectric element attached to the diaphragm in such a manner that the piezoelectric element can vibrate along directions substantially perpendicular to the top and bottom sides of the diaphragm when a voltage is applied to the piezoelectric element, wherein when the diaphragm is driven to vibrate upwardly by the piezoelectric element, the diaphragm pushes at least some of the working fluid in the lower region of the first chamber into the upper region of the first chamber via the nozzle, wherein the partition plate defines a plurality of reflux holes therein at two opposite sides of the nozzle, the reflux holes communicating the upper region with the lower region, and wherein the partition plate has two wings extending outward from the two opposite sides of the nozzle, the reflux holes being defined in the two wings.