US2021102760A1PendingUtilityA1

Heat sink

60
Assignee: FUJI ELECTRIC CO LTDPriority: Jul 3, 2018Filed: Dec 16, 2020Published: Apr 8, 2021
Est. expiryJul 3, 2038(~11.9 yrs left)· nominal 20-yr term from priority
Inventors:Takumi NakamuraEiji AnzaiTomoyuki HirayamaYutaka HiranoRyoichi KatoHiromichi GoharaKohei Yamauchi
H10W 40/47H10W 40/226H05K 7/20254F28F 2215/04F28F 3/04F28D 2021/0029F28F 3/025
60
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Claims

Abstract

A heat sink includes: a base plate; a cover overlapping the base plate; a fin having a plate-like shape projecting from the base plate, the fin being located between the base plate and the cover; a first fin group composed of a plurality of the fins arranged with a gap therebetween in a first direction parallel to the base plate; and a second fin group composed of a plurality of the fins arranged with a gap therebetween in the first direction, and adjacent to the first fin group with a gap therebetween in a second direction parallel to an inflow direction of refrigerant. A longitudinal direction of the fin is along the second direction. A position in the first direction of the fin of the second fin group is displaced with respect to a position in the first direction of the fin of the first fin group.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A heat sink comprising:
 a base plate;   a cover overlapping the base plate;   a fin having a plate-like shape projecting from the base plate in a direction perpendicular to the base plate, the fin being located between the base plate and the cover;   a first fin group composed of a plurality of the fins arranged with a gap therebetween in a first direction parallel to the base plate; and   a second fin group composed of a plurality of the fins arranged with a gap therebetween in the first direction, and adjacent to the first fin group with a gap therebetween in a second direction parallel to an inflow direction of refrigerant and perpendicular to the first direction, wherein   a longitudinal direction of the fin is along the second direction, and   a position in the first direction of the fin belonging to the second fin group is displaced with respect to a position in the first direction of the fin belonging to the first fin group.   
     
     
         2 . The heat sink according to  claim 1 , wherein the fin includes a first curved portion projecting in the first direction and a second curved portion projecting opposite in direction to the first curved portion. 
     
     
         3 . The heat sink according to  claim 1 , wherein the base plate and the fins are made of metal containing aluminum.

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