Patent ID: 7455101

Claim:
A micro loop thermosyphon cooler, comprising: a heat source; a thermal absorption unit, coupled to the heat source, further comprising a microchannel system formed by superimposing a cover on a substrate having a plurality of micro-grooves arranged thereon, the microchannel system being capable of allowing a ferrofluid composed of a fluid and a plurality of magnetic particles to flow through; and a condenser, arranged at a position higher than that of the thermal absorption unit by a height while coupled to the outlet of the thermal absorption unit by an inlet thereof via a conduit capable of containing both liquid and vapor, and coupled to an inlet of the thermal absorption unit by an outlet thereof via another conduit capable of containing only liquid; wherein, the thermal absorption unit absorbs the heat generated from the heat source and thus enables a portion of the fluid to vaporize and generate bubbles accordingly for pressuring the fluid to force a plurality of magnetic particles in the fluid to flow and enter the condenser so as to complete a self-pumping process while condensing the vaporized fluid and thus guiding the condensed fluid to flow back to the thermal absorption unit by the action of gravity.