Patent ID: 7500513
Filing Date: 2009-03-10
Classification: B23K,F28D,F28F,H01L

Abstract:
1. A heat-pipe type heat sink comprising: a plurality of fins each defining therein a through hole and a cutout adjacent to the through hole; at least a heat pipe extending through the through holes of the fins; and soldering material configured for disposal between the heat pipe and the fins; wherein a sidewall of the through hole forms a collar contacting with the heat pipe, and at least a fringe is formed beside the cutout and connects with the collar for guiding the soldering material in molten state to flow from the cutout towards the collar to fill in a gap formed between the heat pipe and the fins to bond the heat pipe and the fins together after the molten soldering material is cooled; wherein both of the at least a fringe and the collar extend beyond a plane of the fin along a direction substantially perpendicular to the plane of the fin; wherein at least an arc-shaped guiding surface is formed between and smoothly connects the at least a fringe with the collar, and the at least an arc-shaped guiding surface is disposed substantially perpendicular to the plane of the fin.