Patent ID: 7522422
Filing Date: 2009-04-21
Classification: H01L

Abstract:
1. A heat sink mounted on a heat radiation part through the medium of a coolant, comprising: a base member; a heat sink body formed in a frame shape having an outer frame surrounding an inner frame, the outer frame having a greater height (T) than a height (T a bellows-like flow straightening plate disposed between said heat radiation part and said base member in physical contact with said heat radiation part on one side and with said base member on the other side, wherein said bellows-like flow straightening plate is pressed against said base member and said heat radiation part without brazing thereto, and wherein said bellows-like flow straightening plate is formed to have a greater height (T wherein said flow straightening plate partitions said passage into a plurality of flow straightening channels that include base member-side flow straightening channels and heat transfer side flow straightening channels, said channels having an open portion along one longitudinal dimension and a closed portion along an opposite longitudinal dimension, with the open portion defining the heat transfer and base member sides.