US20100132922A1

US20100132922A1 - Vapor chamber and cooling device having the same

Info

Publication number: US20100132922A1
Application number: US12/325,533
Authority: US
Inventors: George Anthony. Meyer, IV; Chien-Hung Sun; Chieh-Ping Chen
Original assignee: Celsia Technologies Taiwan Inc
Current assignee: Celsia Technologies Taiwan Inc
Priority date: 2008-12-01
Filing date: 2008-12-01
Publication date: 2010-06-03

Abstract

A vapor chamber is provided to include shell, capillary tissue, working fluid, heat-absorbing section and heat-releasing section. A hollow chamber is formed in the shell. The capillary tissue is arranged and accommodated in the hollow chamber. The working fluid is injected into and filled in the hollow chamber. Two corresponding surfaces of the shell at the heat-releasing section are respectively a non-planar shape. Because the two corresponding surfaces of the shell at the heat-releasing section are respectively a non-planar shape, the structure strength of the vapor chamber is higher and the anti-deforming ability is superior, thereby the using life of the vapor chamber being prolonged. In addition, the vapor chamber can be combined with cooling fins to become a cooling device. Since the two corresponding surfaces of the shell at the heat-releasing section are respectively designed as a non-planar shape, the vapor chamber and the cooling fins have larger contacting surfaces, making the heat-transferring effectiveness thereby enhanced significantly.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention in general relates to a vapor chamber, and in particular, to a vapor chamber having non-planar surfaces and a cooling device having the vapor chamber.
2. Description of Prior Art
Vapor chambers and heat pipes, comprehensively applied as the cooling devices in the information industry, are elements that apply phase change of the working fluid to reach a fast heat transfer. In particular, a vapor chamber can achieve a heat transfer via surface contact.
As shown in FIG. 1, which is a perspective outer view of vapor chamber according to the prior arts, this prior vapor chamber has a shell 11 a, a capillary tissue 12 a and a working fluid 13 a. In this case, a hollow chamber 103 a is formed in the shell 11 a. The capillary tissue 12 a is arranged in the hollow chamber 103 a. The working fluid 13 a is injected into and filled in the hollow chamber 103 a. The vapor chamber 10 a has a heat-absorbing section 101 a and a heat-releasing section 102 a, in which the heat-absorbing section 101 a is formed at a partial area of the vapor chamber 10 a, while the heat-releasing section 102 a is formed at another partial area of the vapor chamber 10 a. Particularly, the surfaces of the heat-absorbing section 101 a and the heat-releasing section 102 a are respectively shown as a plane shape.
However, there are still some drawbacks for this kind of prior vapor chamber in terms of practical usage. For example, the heat-transferring ability will become superior if the thickness of the shell 11 a of the vapor chamber 10 a becomes thinner, so the current design of the thickness of the shell 11 a has a trend of thinness. However, when the vapor chamber 10 a transfers heat, a high pressure will be formed therein due to phase change, which easily creates a deforming or collapsing phenomenon on the surfaces of shell 11 a. Since the surfaces of the heat-releasing section 102 a of commonly prior vapor chamber are shown as plane type, so its structural strength is not strong enough to resist the deformation caused by high inner pressure. Therefore, the surfaces of the heat-releasing section 102 a are easily collapsed or deformed, making the vapor chamber 10 a damaged.
Accordingly, aiming to solve aforementioned shortcomings, after a substantially devoted study, in cooperation with the application of relatively academic principles, the inventor has finally proposed the present invention that is designed reasonably to possess the capability to improve the prior arts significantly.

SUMMARY OF THE INVENTION

The invention is mainly to provide a vapor chamber which has a stronger structural strength and superior anti-deforming ability by designing a non-planar shape for each two corresponding surfaces of the shell at the heat-releasing section, such that the using life of the vapor chamber is prolonged.
Secondly, the invention is to provide a vapor chamber which has a stronger structural strength and superior anti-deforming ability by designing a first surface and a second surface respectively as a non-planar surface, such that the using life of the vapor chamber is prolonged.
Therefore, a vapor chamber provided by the invention includes a shell, a capillary tissue, a working fluid, a heat-absorbing section and a heat-releasing section. According to the invention, a hollow chamber is formed in the shell. The capillary tissue is arranged and accommodated in the hollow chamber. The working fluid is injected into and filled in the hollow chamber. The heat-absorbing section is formed at a partial area of the vapor chamber, while the heat-releasing section is formed at another partial area of the vapor chamber. Two corresponding surfaces of the shell at the heat-releasing section are respectively shown as a non-planar shape.
Again, a vapor chamber provided by the invention includes a shell, a capillary tissue and a working fluid. A hollow chamber is formed in the shell, an external part of which includes a flat section and an extension section connected the flat section. The extension section has a first surface and a second surface formed at a corresponding side of the first surface. The first surface and the second surface are all non-planar surfaces. The capillary tissue is arranged and accommodated in the hollow chamber. The working fluid is injected into and filled in the hollow chamber.
Furthermore, the invention is to provide a vapor chamber and a cooling device having the vapor chamber and, since two corresponding surfaces of the shell at the heat-releasing section are respectively designed as a non-planar shape, both vapor chamber and cooling fins have larger contact area, thus that the heat-transferring effectiveness is enhanced significantly.
Finally, the invention is to provide a cooling device having vapor chamber, including a cooler and a vapor chamber. The cooler includes a plurality of cooling fins, which are interspaced to each other. The vapor chamber includes a shell, a capillary tissue, a working fluid, a heat-absorbing section and a heat-releasing section. A hollow chamber is formed in the shell. The capillary tissue is arranged and accommodated in the hollow chamber. The working fluid is injected into and filled in the hollow chamber. The heat-absorbing section is formed at a partial area of the vapor chamber, while the heat-releasing section is formed at another partial area of the vapor chamber and is arranged by passing through the cooling fins. Two corresponding surfaces of the shell at the heat-releasing section are respectively designed as a non-planar shape.

BRIEF DESCRIPTION OF DRAWING

The features of the invention believed to be novel are set forth with particularity in the appended claims. The invention itself, however, may be best understood by reference to the following detailed description of the invention, which describes a number of exemplary embodiments of the invention, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a perspective view of a prior vapor chamber;

FIG. 2 is a perspective view of a vapor chamber according to the present invention;

FIG. 3 is a top sectional view of a vapor chamber according to the present invention;

FIG. 4 is a perspective view of a cooler according to the present invention;

FIG. 5 is a side sectional view of a cooler according to the present invention during an operational status;

FIG. 6 is a top sectional view of a cooler according to the present invention during an operational status;

FIG. 7 is a perspective view of another embodiment of the vapor chamber of the invention;

FIG. 8 is a top sectional view of another embodiment of the vapor chamber of the invention; and

FIG. 9 is a perspective view of a further embodiment of the vapor chamber of the invention.

DETAILED DESCRIPTION OF THE INVENTION

In cooperation with attached drawings, the technical contents and detailed description of the present invention are described thereinafter according to a number of preferable embodiments, not used to limit its executing scope. Any equivalent variation and modification made according to appended claims is all covered by the claims claimed by the present invention.
Please refer to FIG. 2 through FIG. 4, which respectively show a perspective view, a top sectional view of a vapor chamber and a perspective view of a cooling device according to the present invention. The invention is to provide a vapor chamber and a cooling device having the vapor chamber. The vapor chamber 10 includes a shell 11, a capillary tissue 12, a working fluid 13, a heat-absorbing section and a heat-releasing section 102. According to a preferable embodiment, a hollow chamber 103 is formed in the shell 11. The capillary tissue 12 is arranged and accommodated in the hollow chamber 103. The working fluid 13 is injected into and filled in the hollow chamber 103.
The heat-absorbing section 101 is formed at a partial area of the vapor chamber 10, while the heat-releasing section 102 is formed at another partial area of the vapor chamber 10. In this case, the heat-absorbing section 101 is a flat section, and the heat-releasing section 102 is connected to the flat section via an extension section. Two corresponding surfaces 1021 of the shell 11 at the heat-releasing section 102 are respectively designed as a non-planar shape. In addition, the two corresponding surfaces 1021 are further distinguished into a first surface 1022 and a second surface 1023. These two corresponding surfaces 1021 (i.e. the first surface 1022 and the second surface 1023) are respectively configured as an arch shape projected outwardly, but not limited to this kind of shape only. Since the arch structure can convert pressures imposed vertically on the surfaces into pressures in alignment along the arch lines, the structural strength of this kind of arch structure is stronger than that of common planar structure, so is the anti-deforming ability.
In addition, a cooling device having vapor chamber 10 includes a vapor chamber 10 and a cooler 20. The cooler 20 includes a plurality of cooling fins 21 that are inter-spaced to each other by alignment. There are two through-holes 22 arranged at each cooling fin 21, however, not limited to this kind of pattern only. Again, the cooling fin 21 is configured a ring wall 211 around the circumference of the through-holes 22 respectively. Two neighboring cooling fins 21 are inter-abutted to each other via the ring wall 211. The heat-releasing section 102 is arranged by passing through the cooling fins 21. The shape of the through-hole 22 corresponds to that of these two corresponding surfaces 1021.
In this embodiment, the vapor chamber 10 is shown as a “U” shape, however, not limited to this kind of pattern only. Since the first surface 1022 and the second surface 1023 are respectively shown as a non-planar shape (in this embodiment, being an arch shape projected outwardly) so, when the heat-releasing section 102 passes through the cooling fins 21 and connects thereto, the surface 1021 shown as an arch shape can contact the cooling fins 21 with larger area. In addition, the compatibility between the heat-releasing section 102 and the cooling fins 21 is improved without worrying the problem of machining flatness. In the meantime, a better cooling effectiveness can also be achieved by configuring the heat-releasing section 102 as a non-planar shape.
Please refer to FIG. 5 and FIG. 6, respectively showing a side sectional view and a top sectional view of a cooling device according to the present invention during operational status. The heat-absorbing section 101 is connected by adhesion onto a heating element 41 on a circuit board 40. The waste heat generated from the heating element 41 is transferred to the heat-absorbing section 13, then to the heat-releasing section 102, and finally to the cooling fins 21. It can be seen obviously from the FIG. 6 that, since the surface 1021 (i.e. the first surface 1022 and the second surface 1023) is shown as an arch shape, the contacting area between the heat-releasing section and the cooling fin 21 is larger, such that a better effectiveness of heat transfer can be achieved.
Please refer to FIG. 7 and FIG. 8, respectively showing a perspective view and a top sectional view of a vapor chamber according to another embodiment of the present invention. In this embodiment, the surface 1021 (i.e. the first surface 1022 and the second surface 1023) is shown as a corrugated shape. There is also a larger contacting area existing between the corrugated surface 1021 and the cooling fin 21 (please refer to FIG. 4), such that an effectiveness same as that o f above embodiment can be achieved as well.
Please refer to FIG. 9, showing a perspective view of a vapor chamber according to a further embodiment of the present invention. In FIG. 9, the vapor chamber 10 is shown as an “L” shape. However, different shapes of vapor chamber 10 can be chosen according to practically needed requirement, but the surface 1021 of the heat-releasing section has to be designed as a non-planar shape.
According to the aforementioned structure, a vapor chamber and a cooling device having the vapor chamber are thus obtained.
Summarizing aforementioned description, the invention is an indispensable product of novelty indeed, which may positively reach the expected usage objective for solving the drawbacks of the prior arts, and which extremely possesses the innovation and progressiveness for completely fulfilling the applying merits of a new type patent, according to which the invention is thereby applied. Please examine the application carefully and grant it as a formal patent for protecting the rights of the inventor.
However, the aforementioned description is only a number preferable embodiments according to the present invention, not used to limit the patent scope of the invention, so equivalently structural variation made to the contents of the present invention, for example, description and drawings, is all covered by the claims claimed thereinafter.

Claims

1. A vapor chamber, including

a shell, in which a hollow chamber is formed;

a capillary tissue, which is arranged and accommodated in the hollow chamber;

a working fluid, which is injected into and filled in the hollow chamber;

a heat-absorbing section, which is formed at a partial area of the vapor chamber; and

a heat-releasing section, which is formed at another partial area of the vapor chamber;

characterized in that two corresponding surfaces of the shell at the heat-releasing section are respectively shown as a non-planar shape.

2. The vapor chamber according to claim 1, wherein the two corresponding surfaces are respectively shown as an arch shape projected outwardly.

3. The vapor chamber according to claim 1, wherein the two corresponding surfaces are respectively shown as a corrugated shape.

4. A vapor chamber, including

a shell, in which a hollow chamber is formed, and an external part of which includes a flat section and an extension section connected to the flat section, the extension section having a first surface and a second surface formed at a corresponding side of the first surface, the first surface and the second surface being respectively a non-planar shape;

a capillary tissue, which is arranged and accommodated in the hollow chamber; and

a working fluid, which is injected into and filled in the hollow chamber.

5. The vapor chamber according to claim 4, wherein the first surface and the second surface are respectively shown as an arch shape projected outwardly.

6. The vapor chamber according to claim 4, wherein the first surface and the second surface are respectively shown as a corrugated shape.

7. A cooling device having vapor chamber, including

a cooler, including a plurality of cooling fins that are inter-spaced and respectively arranged a through-hole by alignment to each other; and

a vapor chamber, including

a shell, in which a hollow chamber is formed;

a capillary tissue, which is arranged and accommodated in the hollow chamber;

a working fluid, which is injected into and filled in the hollow chamber;

8. The cooling device having vapor chamber according to claim 7, wherein the two corresponding surfaces are respectively shown as an arch shape projected outwardly.

9. The cooling device having vapor chamber according to claim 7, wherein the two corresponding surfaces are respectively shown as a corrugated shape.