US 12,250,792 B2
Heat pipes of an electronic apparatus and method of manufacturing the same
Masahiro Kitamura, Kanagawa (JP); Takuroh Kamimura, Kanagawa (JP); Akinori Uchino, Kanagawa (JP); and Ryota Watanabe, Kanagawa (JP)
Assigned to Lenovo (Singapore) Pte. Ltd., Singapore (SG)
Filed by Lenovo (Singapore) Pte. Ltd., Singapore (SG)
Filed on Sep. 14, 2022, as Appl. No. 17/931,901.
Claims priority of application No. 2021-171882 (JP), filed on Oct. 20, 2021.
Prior Publication US 2023/0124239 A1, Apr. 20, 2023
Int. Cl. H05K 7/20 (2006.01); F28D 15/02 (2006.01); F28D 15/04 (2006.01); G06F 1/20 (2006.01)
CPC H05K 7/20336 (2013.01) [F28D 15/04 (2013.01); G06F 1/203 (2013.01); H05K 7/20154 (2013.01); F28D 15/0233 (2013.01); F28D 15/0275 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electronic apparatus comprising:
a heating element; and
a plurality of heat pipes that is thermally connected to the heating element, wherein each of the heat pipes has
a cross section having a rectangular shape,
a heat receiving surface thermally connected to the heating element, and
a side surface orthogonal to the heat receiving surface,
the side surfaces of the heat pipes, which are adjacent to each other, are in surface contact with each other,
cross-sectional areas of the plurality of heat pipes are different from each other,
the cross-sectional areas of the plurality of heat pipes decrease in a direction of a planar bend such that:
the heat pipe with the lowest cross-sectional area has the highest curvature in the planar bend; and
the heat pipe with the highest cross-section area has the lowest curvature in the planar bend,
the electronic apparatus further comprises:
a fixture that is thermally connected to and holds the plurality of heat pipes in a region that overlaps the heating element in a first direction perpendicular to the heat receiving surfaces of the heat pipes; and
a vapor chamber that is thermally connected to the fixture,
the vapor chamber includes an indent that corresponds to a location of the heating element, and
the heat pipes are bent such that the heat receiving surfaces of the heat pipes are thermally connected to the heating element in the indent.