CN108692599A - Heat conduction structure with liquid-gas separation mechanism - Google Patents

Abstract

The present invention relates to a heat-conducting structure with a liquid-gas separation mechanism, including a temperature-averaging plate, a heat pipe, a partition and a working fluid. The temperature-averaging plate includes a shell and a cavity. The shell has a bottom plate and a vertical plate. A first capillary structure is provided on the inner surface of the bottom plate, and a perforation is provided on the vertical plate. The heat pipe includes a tube body and a second capillary structure. The tube body has an open end, and the tube body is sealed with the perforation corresponding to the open end. The partition is laid on the open end and covers the first capillary structure and the second capillary structure, so that a gas flow channel and a liquid flow channel are formed on both sides of the partition respectively. The working fluid is filled in the cavity. In this way, the refluxed liquid working fluid will not be affected by the flow of the gaseous working fluid, thereby increasing the reflux speed of the liquid working fluid.

Description

Thermally conductive structure with liquid-gas separation mechanism

technical field

The invention relates to a heat conduction technology, in particular to a heat conduction structure with a liquid-gas separation mechanism.

Background technique

As the calculation speed of electronic components continues to increase, the heat generated by them is getting higher and higher. In order to effectively solve the problem of high heat generation, the industry has integrated heat pipes (Heat Pipe) and vapor chamber (Vapor Chamber) with good thermal conductivity ) are used extensively. Although the heat pipe has the ability to make the flow direction of the internal gaseous working fluid consistent, the heat it can conduct is quite limited due to the volume constraint, and the vapor chamber has a large heating area to provide The heat source is directly attached for conduction, but the flow direction of the gaseous working fluid is quite disordered, which will limit its heat conduction performance.

In order to solve the aforementioned problems, the industry has combined the heat pipe and the chamber to form a heat conduction structure, in which the heat pipe is connected to one side of the chamber, and the inner space of the heat pipe and the chamber The internal spaces are interconnected.

However, the conventional combined structure of vapor chamber and heat pipe has the following problems, although it has the effect of heat conduction and heat dissipation. When the gaseous working fluid flows through the heat pipe, the flow rate increases due to the smaller cross-sectional area. The increased flow rate will have a restraining effect on the returning liquid working fluid, and the returning liquid working fluid will be brought back to the end of the heat pipe away from the vapor chamber, which will cause adverse conditions such as empty heating of the vapor chamber. In addition, the capillary inside the heat pipe fails to adhere to the capillary inside the vapor chamber, resulting in interruption or discontinuity in the back and forth flow of the liquid working fluid, which will greatly reduce its heat conduction performance.

Contents of the invention

The object of the present invention is to provide a heat conduction structure with a liquid-gas separation mechanism, which separates the gas flow channel and the liquid flow channel with a partition, so that the liquid working fluid that is beneficial to backflow can not be affected by the flow of the gas working fluid, thereby improving the liquid state. The return velocity of the working fluid.

In order to achieve the above object, the present invention provides a heat conduction structure with a liquid-gas separation mechanism, including a vapor chamber, a heat pipe, a partition and a working fluid, the vapor chamber includes a shell and is formed on the shell A cavity inside the body, the casing has a bottom plate and a vertical plate extending from the bottom plate, a first capillary tissue is arranged on the inner surface of the bottom plate, and a perforation communicating with the cavity is opened on the vertical plate The heat pipe includes a pipe body and a second capillary tissue disposed in the pipe body, the pipe body has an open end, and the pipe body is sealed with the open end corresponding to the perforation hole; the partition is laid on the opening end and cover the first capillary tissue and the second capillary tissue, so that a gas channel and a liquid channel are respectively formed on two sides of the separator; the working fluid is filled in the cavity.

Preferably, the above-mentioned separator is an air-tight sheet.

Preferably, the separator is a copper foil or an aluminum foil.

Preferably, the partition includes a shielding sheet and an arc-shaped sheet body connected to the shielding sheet, the shielding sheet covers the inner surface of the first capillary tissue, and the arc-shaped sheet body covers the second capillary tissue .

Preferably, the radius of curvature of the arc-shaped sheet is equal to the radius of curvature of the inner surface of the second capillary tissue.

Preferably, the above-mentioned heat pipes and partitions are plural, and each heat pipe is respectively connected to the above-mentioned temperature chamber, and each partition is respectively laid on each of the above-mentioned opening ends.

Preferably, the above-mentioned heat pipes are plural, and each heat pipe is connected to the above-mentioned vapor chamber respectively, and the above-mentioned separator includes a strip-shaped shielding sheet and a plurality of arc-shaped sheets connected to the strip-shaped shielding sheet, and the strip-shaped shielding sheet covers On the inner surface of the above-mentioned first capillary structure, each arc-shaped sheet body covers the second capillary structure of each heat pipe respectively.

Preferably, the end surfaces of the second capillary structure and the first capillary structure are attached and in contact with each other.

Preferably, the above-mentioned first capillary structure is metal braided mesh, fiber bundle or sintered metal powder.

Preferably, the above-mentioned second capillary structure is metal braided mesh, fiber bundle or sintered metal powder.

The present invention also has the effect that the return velocity of the liquid working fluid is increased by utilizing the first capillary tissue and the second capillary tissue in attached contact. By connecting the strip-shaped shielding sheet with each arc-shaped sheet body, the liquid working fluid returning from each heat pipe can be exchanged or replenished.

Description of drawings

Figure 1 is an exploded perspective view of the present invention.

Fig. 2 is a combined sectional view of the present invention.

Fig. 3 is a combined sectional view of another direction of the present invention.

Fig. 4 is a combined cross-sectional view of the present invention applied to a heat source.

Fig. 5 is a combined sectional view of another embodiment of the present invention.

【Description of main component symbols】

10...Vapor chamber

11...Lower housing

111...bottom plate

112...Stands

113…Perforation

12…Upper shell

13…first capillary

A... cavity

20…heat pipe

21...Tube body

22…second capillary

30, 30a...Separator

31…Masking sheet

31a...Long strip masking sheet

32…curved sheet

C1...Gas channel

C2…Liquid channel

40…working fluid

8...heat source

Detailed ways

The detailed description and technical content of the present invention are described below with accompanying drawings. However, the attached drawings are only for reference and illustration, and are not intended to limit the present invention.

Please refer to FIG. 1 and FIG. 3 , the present invention provides a heat conduction structure with a liquid-gas separation mechanism, which mainly includes a vapor chamber 10 , a heat pipe 20 , a separator 30 and a working fluid 40 .

The vapor chamber 10 of this embodiment mainly includes a lower casing 11 and an upper casing 12, the upper casing 12 and the lower casing 11 are all made of materials with good thermal conductivity such as copper, aluminum or their alloys, and the lower casing The body 11 has a rectangular bottom plate 111 and a vertical plate 112 bent and extended upward from the rectangular bottom plate 111. The upper shell 12 is sealed and sealed corresponding to the lower shell 11, so that the upper shell 12 and the lower shell 11 A cavity A is formed therebetween, and a perforation 113 communicating with the cavity A is opened on the vertical plate 112 . A first capillary structure 13 is disposed on the inner surface of the bottom plate 111 , which can be made of metal braided mesh, fiber bundles, or sintered metal powder. Similarly, the aforementioned first capillary tissue 13 can also be arranged on the inner surface of the vertical plate 112 and the inner surface of the upper casing 12 .

The heat pipe 20 includes a pipe body 21 and a second capillary structure 22. The pipe body 21 can be made of materials with good thermal conductivity such as copper, aluminum or alloys thereof, and has a closed end and an open end. The second capillary structure 22 can be made of materials such as metal braids, fiber bundles or metal powder sintered objects, which are arranged on the inner wall of the tube body 21 and extend to the position of the opening end of the tube body 21. The heat pipe 20 is based on its opening corresponding to the aforementioned The perforation 113 is used for piercing and sealing, and makes the end surface of the second capillary tissue 22 and the first capillary tissue 13 be in adhering contact with each other.

The partition 30 is an air-tight sheet, which can be made of copper foil, aluminum foil or alloys thereof. The partition 30 of this embodiment has a shielding sheet 31 and an arc-shaped sheet 32 connected to the shielding sheet 31 , the shielding sheet 31 is roughly in a rectangular shape, which covers the inner surface of the first capillary tissue 13, and the radius of curvature of the arc-shaped sheet body 32 is approximately equal to the radius of curvature of the second capillary tissue 32 inner surface, so that the arc-shaped sheet The body 32 can closely adhere to and cover the second capillary tissue 22 , so that a gas flow channel C1 is formed on the upper side of the partition 30 and a liquid flow channel C2 is formed on the lower side of the partition 30 .

The working fluid 40 can be water, which can communicate with the aforementioned cavity A through a liquid inlet and degassing pipe (not shown in the figure), and fill the working fluid 40 into the cavity A formed by the upper casing 12 and the lower casing 11 In the process, the degassing process and the sealing operation are performed on the liquid degassing pipe with the help of the liquid degassing pipe, and then the heat conduction structure with a liquid-gas separation mechanism of the present invention is completed.

Please refer to Fig. 4. When in use, the bottom plate 111 of the vapor chamber 10 is closely bonded to a heat source 8. After the heat source 8 operates to generate high heat, the high heat will make the heat stored in the first capillary The liquid working fluid 40 in the tissue 13 evaporates and becomes a gaseous working fluid 40. The gaseous working fluid 40 carries a large amount of heat and flows from the cavity A to the inside of the tube body 21 of the heat pipe 20 through the gas flow channel C1, and then reaches the heat pipe 20. The end far away from the vapor chamber 10 will condense the aforementioned gaseous working fluid 40 and form a liquid working fluid 40 under the action of heat dissipation units (not shown) such as heat dissipation fins installed outside the heat pipe 20 , the liquid working fluid 40 will flow back to the first capillary tissue 13 from the liquid channel C2 by virtue of the capillary adsorption force of the second capillary tissue 22 and through the bonding between the second capillary tissue 22 and the first capillary tissue 13 , Such a continuous cycle of operation is for the conduction and dissipation of heat.

In the present invention, the gaseous working fluid 40 and the liquid working fluid 40 are separated by the separator 30, so that when the gaseous working fluid 40 flows through the open end, the flow velocity increases because the cross-sectional area becomes smaller, and the increased The flow rate will not have a dragging effect on the returning liquid working fluid 40 , thereby increasing the returning speed of the liquid working fluid.

Please refer to Fig. 5, the difference between the present embodiment and the above-mentioned embodiment is that the partition 30a includes a strip-shaped shielding sheet 31a and a plurality of arc-shaped sheets 32 connected to the strip-shaped shielding sheet 31a, each arc-shaped sheet 32 corresponds to each heat pipe 20 and covers each second capillary tissue 22, and the strip-shaped shielding sheet 31a covers the first capillary tissue 13 across the opening ends of each heat pipe 20, so that each The liquid working fluid 40 returned by the heat pipe 20 can be exchanged or replenished as required.

To sum up, the heat conduction structure with a liquid-gas separation mechanism of the present invention can indeed achieve the expected purpose of use, and solve the lack of conventional knowledge, and because of its novelty and creativity, it fully meets the requirements of the invention patent application. According to the patent law To apply, please check carefully and grant the patent of this invention to protect the rights of the inventor.

Claims (10)

1. A heat conduction structure with a liquid-gas separation mechanism, characterized in that it comprises: a uniform temperature plate, including a housing and a cavity formed inside the housing, the housing has a bottom plate and extends from the bottom plate A vertical plate is provided, a first capillary tissue is arranged on the inner surface of the bottom plate, and a perforation is opened on the vertical plate to communicate with the cavity; a heat pipe includes a pipe body and a second pipe arranged in the pipe body. capillary tissue, the tube body has an open end, and the tube body is sealed with the open end corresponding to the perforation; a separator is laid on the open end and covers the first capillary tissue and the second capillary tissue, Therefore, a gas channel and a liquid channel are respectively formed on two sides of the separator; and a working fluid is filled in the cavity. 2. The heat conduction structure with a liquid-gas separation mechanism as claimed in claim 1, wherein the separator is an air-tight sheet. 3. The heat conduction structure with a liquid-gas separation mechanism as claimed in claim 2, wherein the separator is a copper foil or an aluminum foil. 4. The heat conduction structure with a liquid-gas separation mechanism as claimed in claim 1, wherein the partition plate comprises a shielding sheet and an arc-shaped sheet body connected to the shielding sheet, and the shielding sheet covers the first capillary structure The inner surface of the arc-shaped sheet is covered by the above-mentioned second capillary. 5 . The heat conducting structure with a liquid-gas separation mechanism as claimed in claim 4 , wherein the radius of curvature of the arc-shaped sheet is equal to the radius of curvature of the inner surface of the second capillary structure. 6 . 6. The heat conduction structure with a liquid-gas separation mechanism as claimed in claim 1, characterized in that the above-mentioned heat pipes and partitions are plural, each heat pipe is respectively connected to the above-mentioned vapor chamber, and each partition is respectively laid on each of the above-mentioned opening ends . 7. The heat conduction structure with a liquid-gas separation mechanism as claimed in claim 1, wherein the above-mentioned heat pipes are plural, and each heat pipe is connected to the above-mentioned temperature chamber respectively, and the above-mentioned partition includes a long strip-shaped shielding sheet and a long strip connected to the heat pipe. A plurality of arc-shaped pieces of the strip-shaped shielding sheet cover the inner surface of the first capillary structure, and each arc-shaped sheet body covers the second capillary structure of each heat pipe respectively. 8 . The heat conducting structure with a liquid-gas separation mechanism as claimed in claim 1 , wherein an end surface of the second capillary structure is attached to and in contact with the first capillary structure. 9 . 9. The thermally conductive structure with a liquid-gas separation mechanism as claimed in claim 1, wherein the first capillary structure is a metal braid, fiber bundle or sintered metal powder. 10 . The thermally conductive structure with a liquid-gas separation mechanism as claimed in claim 1 , wherein the second capillary structure is a metal braid, fiber bundle or sintered metal powder. 11 .