Heat dissipation device having irregular shape

Patent metadata

Field	Value
Publication number	US-12331997-B2
Application number	US-202217665440-A
Country	US
Kind code	B2
Filing date	Feb 4, 2022
Priority date	Dec 21, 2018
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

A heat dissipation device includes a first casing and a second casing coupled to the first casing. The second casing includes a body having an inner surface and an outer surface opposite the inner surface, and a first portion and a second portion, each of the first and second portions having a different cross-sectional area. The heat dissipation device further includes a plurality of columns on the inner surface, and a first wick structure disposed on the inner surface and in the first portion and the second portion.

First claim

What is claimed is:

1. A heat dissipation device, comprising:
a first casing including:
a first inner surface having a first wick structure, the first wick structure including:
a first portion;
a second portion; and
a third portion,
wherein the first portion is disposed between the second portion and third portion;

a first outer surface opposite the first inner surface; and
a first mounting plate for receiving a first heat source disposed on the first outer surface and located overlapping the first portion of the first wick structure;

a second casing coupled to the first casing, the second casing including:
a second inner surface having a second wick structure, the second wick structure including:
a first portion opposite the first portion of the first wick structure;
a second portion opposite the second portion of the first wick structure; and
a third portion opposite the third portion of the first wick structure,
wherein the first portion of the second wick structure is disposed between the second portion and third portion of the second wick structure; and

a second outer surface opposite the second inner surface and including a second mounting plate different from the first mounting plate for receiving a second heat source, the second mounting plate located overlapping the first portion of the second wick structure;

a third wick structure having at least one bend and arranged between the first inner surface and the second inner surface and arranged in the first portions of the first wick structure and the second wick structure, and the third portions of the first wick structure and the second wick structure, the third wick structure at least partially overlaps the second mounting plate and the first mounting plate; and
a plurality of columns arranged between the first and second inner surfaces,
wherein thermal resistances of the first portion of the first wick structure, second portion of the first wick structure and third portion of the first wick structure are same as thermal resistances of the first portion of the second wick structure, second portion, and third portion, respectively,
the thermal resistances of the first portion of the first wick structure is less than the thermal resistances of the second portion and the third portion of the first wick structure, and
the thermal resistances of the first portion of the second wick structure is less than the thermal resistances second portion and third portion of the second wick structure.

2. The heat dissipation device of claim 1 , wherein a thermal resistance of the first mounting plate is less than the thermal resistances of the first portion of the first wick structure and the first portion of the second wick structure.

3. The heat dissipation device of claim 1 , wherein the first portion of the second wick structure comprises a first part and a second part and the first portion of the first wick structure comprises a first part and a second part, the first part of the first wick structure is opposite the first part of the second wick structure, and the second part of the first wick structure is opposite the second part of the second wick structure.

4. The heat dissipation device of claim 3 , wherein the first part and second part, each of the first wick structure are adjacent each other,
the first part and second part, each of the second wick structure are adjacent each other,
the second portion of the first wick structure is adjacent the first part of the first wick structure,
the second portion of the second wick structure is adjacent the first part of the second wick structure,
the third portion of the first wick structure is adjacent the second part of the first wick structure,
the third portion of the second wick structure is adjacent the second part of the second wick structure, and
a thermal resistance of the second part of the first wick structure is less than the thermal resistance of the first part of the first wick structure and a thermal resistance of second part of the second wick structure is less than the thermal resistance of the first part of the second wick structure and
the second mounting plate is disposed overlapping the first part of the first wick structure and the first part of the second wick structure and the first mounting plate is disposed overlapping the second part of the first wick structure and second part of the second wick structure.

5. The heat dissipation device of claim 1 , wherein a cross-sectional area of the first portion of the first wick structure is greater than cross-sectional areas of the second portion and the third portion of the first wick structure.

6. The heat dissipation device of claim 1 , wherein porous wick structures surround each of the plurality of columns surrounding the third wick structure.

7. The heat dissipation device of claim 1 , wherein porous wick structures surround each of the plurality of columns overlapping the second mounting plate and first mounting plate.

Assignees

• Cooler Master Co Ltd

Inventors

• Wang Xuemei
• Zhang Xiong
• Cheng Jen-Chih

Classifications

• F28D15/046

  characterised by the material or the construction of the capillary structure · CPC title

• H05K7/20336

  Heat pipes, e.g. wicks or capillary pumps · CPC title

• F28D15/0233 Primary

  the conduits having a particular shape, e.g. non-circular cross-section, annular (F28D15/0241, F28D15/0266 take precedence) · CPC title

• F28D2021/0029

  Heat sinks · CPC title

• F28F3/12 Primary

  Elements constructed in the shape of a hollow panel, e.g. with channels {(F28D1/02, F28D1/03 take precedence)} · CPC title