US 12,117,243 B2
Vapor chamber
Yoshikatsu Inagaki, Tokyo (JP); Kenya Kawabata, Tokyo (JP); and Hirofumi Aoki, Tokyo (JP)
Assigned to Furukawa Electric Co., Ltd., Tokyo (JP)
Filed by Furukawa Electric Co., Ltd., Tokyo (JP)
Filed on Jan. 7, 2022, as Appl. No. 17/571,432.
Application 17/571,432 is a continuation of application No. PCT/JP2021/002196, filed on Jan. 22, 2021.
Claims priority of application No. 2020-015656 (JP), filed on Jan. 31, 2020.
Prior Publication US 2022/0128314 A1, Apr. 28, 2022
Int. Cl. F28D 15/04 (2006.01)
CPC F28D 15/04 (2013.01) 9 Claims
OG exemplary drawing
 
1. A vapor chamber comprising:
a container in which a cavity portion is formed by one plate-shaped body and another plate-shaped body facing the one plate-shaped body;
a working fluid enclosed in the cavity portion; and
a wick structure contained in the cavity portion and welded to the container so that a welded portion is formed in the wick structure,
wherein
the wick structure is welded to the container, and thereby contact portions between the wick structure and the container and contact portions between fine members forming the wick structure are melted, and then the wick structure is joined to the container,
the wick structure extends on an inner surface of the one plate-shaped body in surface contact with the inner surface of the one plate-shaped body, and the working fluid that has undergone a phase change from gas to liquid in a heat discharging portion is circulated from the heat discharging portion to a heat receiving portion only by capillary force of the wick structure, and
the wick structure has a mesh member made of metal, and with first metal wires extending in a first direction and second metal wires extending in a second direction, the metal wires being the fine members forming the wick structure, contact portions between the wick structure and the container and contact portions between the first metal wires and the second metal wires are melted and united.