US 12,446,191 B2
Heat dissipating device
Xiao-Yao Li, Hui Zhou (CN); Yu-Ka Feng, Hui Zhou (CN); and Yuan-Long Wen, Hui Zhou (CN)
Assigned to PURPLE CLOUD DEVELOPMENT PTE. LTD., Singapore (SG)
Filed by PURPLE CLOUD DEVELOPMENT PTE. LTD., Singapore (SG)
Filed on Oct. 27, 2022, as Appl. No. 17/975,510.
Claims priority of application No. 202210922660.X (CN), filed on Aug. 2, 2022.
Prior Publication US 2024/0049429 A1, Feb. 8, 2024
Int. Cl. H05K 7/20 (2006.01); F28D 15/02 (2006.01); H01L 23/427 (2006.01)
CPC H05K 7/20327 (2013.01) [F28D 15/0266 (2013.01); H01L 23/427 (2013.01); H05K 7/20309 (2013.01); H05K 7/2039 (2013.01); F28F 2215/06 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A heat dissipating device comprising:
a thermal board having
at least two chambers formed inside the thermal board; said at least two chambers each having
a first inlet connected to an end of the respective chamber; and
at least one first outlet connected to another end of the respective chamber through an outlet recess corresponding to each of the at least two chambers;
a first evaporating section adjacent to the first inlet;
a second evaporating section adjacent to the at least one first outlet;
a passive one-way valve section located between the first evaporating section and the second evaporating section; the first evaporating section, the passive one-way valve section, and the second evaporating section being sequentially connected to each other;
at least two cooling fins each having
an inner space;
at least one second inlet and a second outlet formed by the inner space; the at least one second inlet being connected to the at least one first outlet; the second outlet connected to the first inlet; and
a working fluid filled in the at least two chambers and the inner spaces of the at least two colling fins; the passive one-way valve section configured to limit the working fluid to cycle in the at least two chambers of the thermal board and the inner spaces of the at least one-two cooling fins along a single direction,
wherein the outlet recess fluidly connected to a first chamber of said at least two chambers and the outlet recess fluidly connected to a second chamber of said at least two chambers are fluidly separated from each other.