US 12,432,883 B2
Two-phase immersion-type heat dissipation structure having acute-angle notched structures
Chun-Te Wu, New Taipei (TW); Ching-Ming Yang, New Taipei (TW); Yu-Wei Chiu, New Taipei (TW); and Tze-Yang Yeh, New Taipei (TW)
Assigned to AMULAIRE THERMAL TECHNOLOGY, INC., New Taipei (TW)
Filed by AMULAIRE THERMAL TECHNOLOGY, INC., New Taipei (TW)
Filed on Nov. 4, 2022, as Appl. No. 17/980,626.
Prior Publication US 2024/0155807 A1, May 9, 2024
Int. Cl. H05K 7/20 (2006.01)
CPC H05K 7/2039 (2013.01) [H05K 7/203 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A two-phase immersion-type heat dissipation structure, comprising:
a heat dissipation substrate having a fin surface and a non-fin surface that face away from each other, wherein the non-fin surface is configured to be in contact with a heat source immersed in a two-phase coolant; and
a plurality of fins, wherein the fin surface is connected with the plurality of fins;
wherein more than half of the plurality of fins are functional fins, and at least one side surface of each of the functional fins has a first surface and a second surface defined thereon that are connected to each other;
wherein an angle between the first surface and the fin surface is from 80 degrees to 100 degrees, and an angle between the second surface and the fin surface is less than 75 degrees, so that an acute-angle notched structure is formed at a junction between the second surface and the fin surface for forming an overheated position that promotes generation of bubbles;
wherein the second surface and the fin surface are planar surfaces and are not completely connected so as to form an incomplete sharp corner at the junction between the second surface and the fin surface;
wherein a projection width of an orthogonal projection of the second surface of one of the functional fins onto a top surface of the one of the functional fins is at least one-sixth of a top surface width of the top surface of the one of the functional fins.