Patent ID: 8353331

Claim:
A heat dissipation apparatus with coarse surface capable of intensifying heat transfer comprising: a base plate; a plurality of plate members each extending upright from said base plate in parallel and providing a first surface and a second surface to be opposite to each other; a flow passage being formed between any two adjacent ones of said plate members; and a heat transfer reinforced unit being provided at said first surface and/or said second surface and further comprising: at least a raised part being disposed slightly upright from the respective surface and spacing apart a distance from each other; a plurality of fish-scale-like parts each being disposed on the respective surface next to the respective raised part, providing a recess toward said surface with an inclining angle to said surface and having an edge such that a sharp end is formed by every two adjacent ones of said fish-scale-like parts and disposed at an intersection of the respective edge of the two adjacent ones of said fish-scale-like parts; wherein said raised parts and said fish-scale-like parts allow fluid near said surface creating eddy flows and secondary flows and breaking boundary layers of the fluid such that at least a heat guiding pipe is capable of being joined to the plate member for promoting heat transfer efficiency; wherein the respective raised part has a first partition member and a second partition member extending from two opposite lateral sides of the respective surface toward a central line of the respective surface such that said two partition members intersect at the central line and define an included angle.