US20210199385A1

US20210199385A1 - Vapor chamber having sealing structure

Info

Publication number: US20210199385A1
Application number: US16/727,921
Authority: US
Inventors: Lulu Guo; Xiwen Xiong; Chao Xu; Jian Zhang
Original assignee: Asia Vital Components Shenzhen Co Ltd
Current assignee: Asia Vital Components Shenzhen Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-07-01

Abstract

A vapor chamber having sealing structure, comprising a body and a capillary wick. The body has a first plate and a second plate. The first and second plates are attached to each other, which collectively define a sealed chamber therein and form a lip side. The lip side has an inlet channel and a stamping seal. The inlet channel is connected to the sealed chamber at one end and is connected to the stamping seal at the other end. The stamping seal is formed in a non-I shape. The capillary wick is selectively disposed within the sealed chamber of the body. Therefore, the air-tightness of the vapor chamber is increased by the stamping seal.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a vapor chamber having sealing structure, and in particular to a vapor chamber having sealing structure that improves a seal structure and thus increase the air-tightness of the vapor chamber.

2. Description of the Related Art

A vapor chamber is a heat transfer device that dispatches heat in three dimensions. The structure of the vapor chamber is generally formed by combining two opposing plates having a capillary wick together, forming a vacuum inside the chamber, and filling up with a working fluid, and a heat transfer device with a low boiling point is therefore manufactured. The vacuum within the chamber is created by a pump via a tube preset during the manufacturing. The tube allows the pump to draw air and the working fluid to be filled up, and the tube would be sealed in the final step to maintain the vacuum.
A Chinese utility model, published as CN202014433U, discloses a vapor chamber having a sealed inlet including a body, capillary wick, working fluid, and a tube via which a fluid is filled up and air is drawn. The body is formed by combining two opposing plates that define a chamber therein. The tube extending through the body has a channel in communication with the chamber. The upper plate is pressed and deformed in a spot where the tube is disposed inside so that the channel is sealed. In addition, an end edge of the tube is aligned with an side edge of the body. Therefore, no portion of the tube extends out and obstructs other mechanisms, the spot where the deformation occurs can be cut again by a shearing process, and so forth. However, the said vapor chamber still has a tube disposed between the body, such that the spot where the tube is disposed may cause a leakage even though the spot has been pressed and sealed. Furthermore, a leakage, decreasing the air-tightness of the vapor chamber, may also occur due to an unexpected external force.
Therefore, to deal with the drawbacks of the conventional vapor chamber is the priority for those having ordinary skill in the art.

SUMMARY OF THE INVENTION

Accordingly, for addressing the drawbacks of the prior arts, the main object of the present invention is to provide a vapor chamber having sealing structure that increase the air-tightness of the vapor chamber.
To achieve the above-mentioned object, the present invention is provided with a vapor chamber having sealing structure, comprising a body and a capillary wick. The body has a first plate and a second plate. The first and second plates are attached to each other, which collectively define a sealed chamber therein and form a lip side. The lip side has an inlet channel and a stamping seal. The inlet channel is connected to the sealed chamber at one end and is connected to the stamping seal at the other end. The stamping seal is formed in a non-I shape. The capillary wick is selectively disposed within the sealed chamber of the body. Therefore, the air-tightness of the vapor chamber is increased by the stamping seal.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded perspective view of a first embodiment of a vapor chamber having sealing structure of the present invention;

FIG. 2 is a perspective view of the first embodiment of the vapor chamber having sealing structure of the present invention;

FIG. 3 is a side cross-sectional view of a second embodiment of the vapor chamber having sealing structure of the present invention;

FIG. 4 is a side cross-sectional view of a third embodiment of the vapor chamber having sealing structure of the present invention;

FIG. 5 is a perspective view of a fourth embodiment of the vapor chamber having sealing structure of the present invention;

FIG. 6 is a side cross-sectional view of a fifth embodiment of the vapor chamber having sealing structure of the present invention; and

FIG. 7 is a side cross-sectional view of a sixth embodiment of the vapor chamber having sealing structure of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIGS. 1 and 2 are an exploded perspective view and a perspective view of a first embodiment of a vapor chamber having sealing structure of the present invention, respectively. As shown in the FIGS., the vapor chamber having sealing structure of the present invention includes a body 1 and a capillary wick 2.
The body 1 has a first plate 11 and a second plate 12 that, when attached to each other, collectively define a sealed chamber 13 therein and form a lip side 14. The lip side 14 surrounds the outer perimeter of the sealed chamber 13. The first plate 11 has a first surface 111 and a second surface 112, while the second plate 12 has a third surface 121 and a fourth surface 122. The first and second plates 11, 12 can be aluminum, copper, commercially pure titanium, aluminium alloy, copper alloy, ceramics, stainless steel, or any combination thereof.
The lip side 14 has a inlet channel 141 and a stamping seal 142. The inlet channel 141 is connected to the sealed chamber 13 at one end, and is connected to the stamping seal 142 at the other end. The stamping seal 142 is formed in a non-I shape, i.e., in a Ω shape, upside-down U shape, U shape, horseshoe shape, X shape, C shape, wave shape, or Union Jack shape. The height of the stamping seal 142 is lower than that of the lip side 14 of the first plate 11.
A groove 15 and the inlet channel 141 are defined by a structure that protrudes upwardly from the first surface 111 to the second surface 112 of the first plate 11. The second and fourth surfaces 112, 122 are disposed on the upper and lower sides of the body 1, respectively, in which the second surface 112 is defined as a condensation surface, while the fourth surface 122 is defined as a heat absorption surface. The groove 15 forms the sealed chamber 13 when the first and second plates 11, 12 are combined together.
The capillary wick 2 is selectively disposed within the sealed chamber 13 of the body 1, and in this embodiment is disposed on the first and third surfaces 111, 121 of the first and second plates 11, 12 inside the sealed chamber 13. The capillary wick 2 can be disposed on either the first surface 111 of the first plate 11 or the third surface 121 of the second plate 12, or both the first and third surfaces 111, 121 of the first and second plates 11, 12 (not shown).
Therefore, the stamping seal 142 can increase the air-tightness of the vapor chamber by preventing a vacuum and working fluid from leaking.
Referring to FIG. 3, a side cross-sectional view of a second embodiment of the vapor chamber having sealing structure of the present invention is shown. Some structures of this embodiment are the same as the above-mentioned first embodiment, and here are not described again. The difference between this embodiment and the first embodiment is that the entire sealed chamber 13 is filled with the capillary wick 2 which is disposed in between the first and second plates 11, 12. The capillary wick 2 in this embodiment is illustrated as a mesh structure, and is not limiting; in other embodiments, the capillary wick 2 can be sintering powder, a mesh structure, a fiber structure, a corrugated sheet, or any combination thereof.
Referring to FIG. 4, a side cross-sectional view of a third embodiment of the vapor chamber having sealing structure of the present invention is shown. Some structures of this embodiment are the same as the above-mentioned first embodiment, and here are not described again. The difference between this embodiment and the first embodiment is that the first surface 111 of the first plate 11 is provided with a plurality of recesses 113 that extends from the first surface 111 to a side of the capillary wick 2 in a direction toward to the groove 15. The plurality of recesses 113 can therefore enhance condensation of the working fluid 3 inside the body 1 during the vapor-liquid circulation, and support the first and second plates 11, 12. In other embodiments, there can be at least a supporting column (not shown) disposed between the first and second plates 11, 12 against the first and third surfaces on its respective two ends to support the first and second plates.
Referring to FIG. 5, a perspective view of a fourth embodiment of the vapor chamber having sealing structure of the present invention is shown. Some structures of this embodiment are the same as the above-mentioned first embodiment, and here are not described again. The difference between this embodiment and the first embodiment is that corresponding first cutout 143 and second cutout 144 are disposed adjacent to the stamping seal 142 on the lip side 144 of the first and second plates 11, 12. The first and second cutouts 143, 144 decrease likelihood of a stress concentration that occurs around the stamping seal during the stamping process of the stamping seal 142.
Referring to FIG. 6, a side cross-sectional view of a fifth embodiment of the vapor chamber having sealing structure of the present invention is shown. Some structures of this embodiment are the same as the above-mentioned first embodiment, and here are not described again. The difference between this embodiment and the first embodiment is that the stamping seal 142 is recessed into both the first and second plates 11, 12, which means the protrusion caused by the stamping seal of the body 1 is lower than the height of the lip side of the first and second plates 11, 12.
Referring to FIG. 7, a side cross-sectional view of a fifth embodiment of the vapor chamber having sealing structure of the present invention is shown. Some structures of this embodiment are the same as the above-mentioned first embodiment, and here are not described again. The difference between this embodiment and the first embodiment is that the body 1 is provided with a tube 4 that is connected to the inlet channel 141 (not shown in the figure since the inlet is blocked by the tube 4). A portion of the tube 4 becomes flat upon the formation of the stamping seal 142, thereby maintaining the vacuum inside the seal chamber 13 of the body 1.
The main object of the present invention is to provide a vapor chamber having sealing structure that is not provided with a pipe via which air is drawn and a fluid is filled up. So, the invention can deal with the drawback that the tube from conventional art may not be firmly sealed after being disposed so as not to prevent a vacuum leak. In addition, leakages in the direction of the inlet channel can be prevented, and a sealing range can be wider in other directions, which allows the multi directions of the lip side of the body to be sealed, preventing the vacuum leak.

Claims

What is claimed is:

1. A vapor chamber having sealing structure, comprising:

a body having a first plate and a second plate, the first and second plates attached to each other collectively defining a sealed chamber therein and forming a lip side, the lip side having a inlet channel and a stamping seal, the inlet channel connected to the sealed chamber at one end and connected to the stamping seal at the other end, the stamping seal being formed in a non-I shape; and

a capillary wick selectively disposed within the sealed chamber of the body.

2. The vapor chamber having sealing structure according to claim 1, wherein the stamping seal is formed in a Ω shape, an upside-down U shape, a U shape, a horseshoe shape, an X shape, a C shape, a wave shape, or a Union Jack shape.

3. The vapor chamber having sealing structure according to claim 1, wherein the lip side surrounds the outer perimeter of the sealed chamber.

4. The vapor chamber having sealing structure according to claim 1, wherein the stamping seal is lower than the height of the lip side of the first plate.

5. The vapor chamber having sealing structure according to claim 1, wherein the first plate has a first surface and a second surface, and the second plate has a third surface and a fourth surface, wherein a groove and the inlet channel are defined by a structure that protrudes upwardly from the first surface to the second surface of the first plate, and wherein the groove forms the sealed chamber when the first and second plates are combined together.

6. The vapor chamber having sealing structure according to claim 1, wherein the entire sealed chamber is filled with the capillary wick which is disposed in between the first and second plates.

7. The vapor chamber having sealing structure according to claim 1, wherein the capillary wick is disposed on either the first surface of the first plate or the third surface of the second plate, or both the first and third surfaces of the first and second plates.

8. The vapor chamber having sealing structure according to claim 5, wherein the second and fourth surfaces are disposed on the upper and lower sides of the body, respectively, in which the second surface is defined as a condensation surface, and the fourth surface is defined as a heat absorption surface.

9. The vapor chamber having sealing structure according to claim 1, wherein the stamping seal is recessed into both the first and second plates, and is lower than the height of the lip side of the first and second plates.

10. The vapor chamber having sealing structure according to claim 1, wherein corresponding first cutout and second cutout are disposed adjacent to the stamping seal on the lip side of the first and second plates.

11. The vapor chamber having sealing structure according to claim 1, wherein the first and second plates are aluminum, copper, commercially pure titanium, aluminium alloy, copper alloy, ceramics, stainless steel, or any combination thereof.

12. The vapor chamber having sealing structure according to claim 1, wherein the first surface of the first plate is provided with a plurality of recesses that extends from the first surface to a side of the capillary wick in a direction toward to the groove.

13. The vapor chamber having sealing structure according to claim 1, wherein the body 1 is provided with a tube that is connected to the inlet channel, and a portion of the tube becomes flat upon the formation of the stamping seal.