Patent ID: 11933543
Assignee: FURUKAWA ELECTRIC CO., LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  H | IPC F

Claim 0:
1. A heat sink comprising:
a container having a cavity formed inside and that has a first surface and a second surface opposite the first surface; a working fluid encapsulated in the cavity; and a steam flow path defined in the cavity and through which the working fluid in a gas phase flows, wherein
the first surface has a flat part and a protruding part projecting from the flat part in an external direction, causing the container to have a flat portion and a protruding portion projecting from the flat portion in the external direction,
an inner space of the protruding portion of the container is in communication with an inner space of the flat portion, causing the cavity to be formed,
a first heat radiating fin is provided on an exterior of the flat pail of the first surface and a second heat radiating fin is provided on an exterior of the second surface,
the first heat radiating fin includes a plurality of fins arranged side by side at regular intervals along an extension direction of the flat part, the plurality of fins is provided on an entirety of the flat part of the first surface,
the protruding portion is provided at a middle portion, one end, and/or another end in a width direction of the container,
a bottom part of the protruding portion is provided with a first wick structure having a first capillary force and another part of the container different than the bottom part, of the protruding portion is provided with a second wick structure having a second capillary force, and
the second capillary force is smaller than the first capillary force.