Heat sink and method for manufacturing heat sink
AssigneeMitsubishi Electric Corporation
InventorsShigenobu TOCHIYAMA, Masayoshi TAMURA
Life of this patent
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Abstract
A flowing direction of a cooling liquid introduced into a heat sink is a direction perpendicular to a stacking direction. Each of the plates has a plurality of holes. In a state in which the plates are stacked in the stacking direction, flow paths formed by the holes of the plates being connected to each other in the stacking direction and the flowing direction have helical shapes toward the flowing direction. Helix center axes at helix centers of the flow paths are formed in only one row in the stacking direction.
Claims20
A heat sink having a fin portion in which a plurality of plates are stacked in a stacking direction, wherein
- a flowing direction of a cooling liquid introduced into the heat sink is a direction perpendicular to the stacking direction,
- each of the plates has a plurality of holes,
- in a state in which the plates are stacked in the stacking direction, flow paths formed by the holes of the plates being connected to each other in the stacking direction and the flowing direction have helical shapes toward the flowing direction, and
- helix center axes at helix centers of the flow paths are formed in only one row in the stacking direction.
Dependencies are inferred from the claim text.