TWI620911B - Heat conduction structure with liquid-gas separation mechanism - Google Patents

Abstract

The invention relates to a heat conducting structure with a liquid-gas separation mechanism, comprising a temperature equalizing plate, a heat pipe, a partition plate and a working fluid. The temperature equalizing plate comprises a casing and a cavity, the casing has a bottom plate and a vertical plate, and the inner surface of the bottom plate The first capillary structure is provided, and the vertical plate is provided with a perforation; the heat pipe comprises a pipe body and a second capillary structure, the pipe body has an open end, and the pipe body is sealed by the open end corresponding to the perforation; the partition plate is laid at the open end and covered In the first capillary structure and the second capillary structure, gas flow paths and liquid flow paths are respectively formed on both sides of the separator; the working fluid is filled in the cavity. Thereby, the recirculating liquid working fluid can be unaffected by the flow of the gaseous working fluid, thereby increasing the recirculation speed of the liquid working fluid.

Description

Thermally conductive structure with liquid-gas separation mechanism

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

As the computing speed of electronic components continues to increase, the heat generated by them is getting higher and higher. In order to effectively solve this problem of high heat generation, the heat pipe and the temperature equalizing plate (Vapor) with good thermal conductivity are already available in the industry. Chamber) is widely used, in which the heat pipe has the same flow direction of the internal working fluid, but the heat that can be transmitted is limited due to the limitation of the volume, and the temperature plate has a spacious heating area. The heat source is directly attached to the conduction, but the flow of the gaseous working fluid is quite disordered, which will limit the heat dissipation performance.

In order to solve the above problems, the heat pipe and the temperature equalizing plate have been assembled to form a heat conducting structure, wherein the heat pipe is connected to one side of the temperature equalizing plate, and the inner space and the temperature equalizing plate of the heat pipe are allowed. The internal spaces are interconnected.

However, the conventional uniform temperature plate and heat pipe combination structure, although having the heat dissipation performance, has the following problems. Since the gaseous working fluid flows through the heat pipe, the flow rate increases because the cross-sectional area becomes smaller, and this is The increased flow rate will create a flow for the returning liquid working fluid, and The returned liquid working fluid is brought back to the heat pipe away from one end of the temperature equalizing plate, so that the temperature equalizing plate is caused by air burning and the like. In addition, the capillary structure inside the heat pipe fails to adhere to the capillary structure inside the temperature equalizing plate, thereby causing interruption or discontinuity in the process of returning the liquid working fluid, which will greatly reduce the heat dissipation performance.

An object of the present invention is to provide a heat-conducting structure having a liquid-gas separation mechanism, which separates a gas flow path and a liquid flow path by a separator, and the liquid working fluid which is favorable for reflux can be not affected by the flow of the gaseous working fluid, thereby improving The reflux rate of the liquid working fluid.

In order to achieve the above object, the present invention provides a heat conducting structure having a liquid-gas separation mechanism, comprising a temperature equalizing plate, a heat pipe, a partition plate and a working fluid, the temperature equalizing plate comprising a casing and being formed on the casing a housing inside the body, the housing has a bottom plate and a vertical plate extending from the bottom plate, a first capillary structure is disposed on the inner surface of the bottom plate, and a through hole communicating with the cavity is opened in the vertical plate The heat pipe includes a tube body and a second capillary structure disposed in the tube body, the tube body having an open end, the tube body is pierced and sealed by the open end; the partition plate is laid at the opening And covering the first capillary structure and the second capillary structure, so that a gas flow channel and a liquid flow channel are respectively formed on two sides of the separator; the working fluid is filled in the cavity.

The present invention also has the effect of using the first capillary structure and the second capillary tissue to attach the contact to thereby increase the reflux velocity of the liquid working fluid. By connecting the strip-shaped shielding sheets and the arc-shaped sheets, the liquid working fluid flowing back from the heat pipes can be exchanged or replenished.

10‧‧‧Wall plate

11‧‧‧ Lower case

111‧‧‧floor

112‧‧‧Legs

113‧‧‧Perforation

12‧‧‧Upper casing

13‧‧‧First capillary tissue

A‧‧‧ cavity

20‧‧‧heat pipe

21‧‧‧ tube body

22‧‧‧Second capillary tissue

30‧‧‧Baffle

31‧‧‧ Masking

31a‧‧‧Long strips

32‧‧‧Shaped sheet

C1‧‧‧ gas flow path

C2‧‧‧ liquid flow channel

40‧‧‧Working fluid

8‧‧‧heat source

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

Figure 2 is a cross-sectional view of the combination of the present invention.

Figure 3 is a cross-sectional view of the combination in another direction of the present invention.

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

Figure 5 is a cross-sectional view showing another embodiment of the present invention.

The detailed description and technical content of the present invention are set forth in the accompanying drawings.

Referring to FIG. 1 and FIG. 3, the present invention provides a heat conducting structure having a liquid-gas separation mechanism, which mainly includes a temperature equalizing plate 10, a heat pipe 20, a partition plate 30, and a working fluid 40.

The temperature equalizing plate 10 of the present embodiment mainly includes a lower casing 11 and an upper casing 12, and the upper casing 12 and the lower casing 11 are made of a material having good thermal conductivity such as copper, aluminum or alloy thereof, and the lower casing. The body 11 has a rectangular bottom plate 111 and a vertical plate 112 which is bent upwardly from the rectangular bottom plate 111. The upper casing 12 is tightly sealed corresponding to the lower casing 11, so that the upper casing 12 and the lower casing 11 are in the upper casing 12 and the lower casing 11 A cavity A is formed between the opening plate 112 and a through hole 113 connecting the cavity A. A first capillary structure 13 is disposed on the inner surface of the bottom plate 111, which may be made of a material such as a metal woven mesh, a fiber bundle or a metal powder sinter. Similarly, the first capillary structure 13 may be disposed on the inner surface of the vertical plate 112 and the inner surface of the upper casing 12.

The heat pipe 20 includes a tube body 21 and a second capillary structure 22. The tube body 21 can be made of a material having good thermal conductivity such as copper, aluminum or alloy thereof, and has a closed end and an open end, and the second capillary structure 22 may be made of a material such as a metal woven mesh, a fiber bundle or a metal powder sinter, which is disposed on the inner wall of the tubular body 21 and extends to the end surface of the open end of the tubular body 21, and the heat pipe 20 corresponds to the open end thereof. The aforementioned through hole 113 is pierced and sealed, and the end faces of the second capillary structure 22 are brought into contact with each other with the first capillary structure 13.

The separator 30 is a gas-impermeable sheet, which can be made of a material such as a copper foil, an aluminum foil or an alloy thereof. The separator 30 of the present embodiment has a shielding sheet 31 and an arc-shaped sheet 32 connecting the shielding sheets 31. The shielding piece 31 has a substantially rectangular shape covering the inner surface of the first capillary structure 13, and the radius of curvature of the curved piece 32 is substantially equal to the radius of curvature of the inner surface of the second capillary structure 32, thereby making the curved piece The body 32 can be adhered and covered over the second capillary structure 22 such that a gas flow path C1 is formed on the upper side of the partition 30 and a liquid flow path C2 is formed on the lower side of the partition 30.

The working fluid 40 can be water, and can communicate with the cavity A through a liquid inlet degassing tube (not shown), and fill the working fluid 40 into the cavity A formed by the upper casing 12 and the lower casing 11. And performing the degassing process by means of the liquid-intake degassing pipe and applying a sealing operation to the liquid-incorporating degassing pipe, thereby completing the heat-conducting structure with the liquid-gas separation mechanism of the present invention.

Referring to FIG. 4, in use, the bottom plate 111 of the temperature equalizing plate 10 is closely adhered to a heat source 8. After the heat source 8 operates to generate high heat, the high heat will cause the first capillary to be stored. The liquid working fluid 40 in the tissue 13 is vaporized and formed into a gaseous working fluid 40, which flows with a large amount of heat from the cavity A through the gas flow path C1 toward the inside of the pipe body 21 of the heat pipe 20, and reaches the heat pipe 20 Moving away from the end of the temperature equalizing plate 10, through the heat dissipating unit (not shown) such as the heat dissipating fins disposed outside the heat pipe 20, the gaseous working fluid 40 is condensed and formed into a liquid working fluid 40. The liquid working fluid 40 flows back to the first capillary structure 13 from the liquid flow path C2 by the capillary adsorption force of the second capillary structure 22 and through the attachment of the second capillary structure 22 and the first capillary structure 13, so continuous Constant cycle operation for the conduction of heat.

In this case, the gaseous working fluid 40 and the liquid working fluid 40 are separated by the partition 30, so that when the gaseous working fluid 40 flows through the open end, the flow rate is reduced because the cross-sectional area is small. Increasingly, such increased flow rates will not cause drawback of the reflowed liquid working fluid 40, thereby increasing the reflux rate of the liquid working fluid.

Referring to FIG. 5, the difference between this embodiment and the above embodiment is that the partition plate 30 includes a long strip-shaped shielding piece 31a and a plurality of curved piece bodies 32 connecting the long strip-shaped shielding pieces 31a, and each curved piece body 32 corresponds to each heat pipe 20 for piercing and covering each of the second capillary structures 22, and the long strip-shaped shielding sheets 31a cover the first capillary structure 13 across the open ends of the heat pipes 20, so that each can be The liquid working fluid 40, which is recirculated by the heat pipe 20, can be exchanged or replenished.

In summary, the heat-conducting structure with the liquid-gas separation mechanism of the present invention can achieve the intended use purpose, and solves the lack of the prior art, and is extremely novel and progressive, fully conforms to the requirements of the invention patent application, and converts If the patent law is filed, please check and grant the patent in this case to protect the rights of the inventor.

Claims (8)

A heat conducting structure having a liquid-gas separation mechanism, comprising: a temperature equalizing plate comprising a casing and a cavity formed inside the casing, the casing having a bottom plate and a vertical plate extending from the bottom plate A first capillary structure is disposed on the inner surface of the bottom plate, and a plurality of perforations communicating with the cavity are formed in the vertical plate; the plurality of heat pipes each include a tube body and a second capillary structure disposed in the tube body The tube body has an open end, and each of the tube bodies is sealed by the open end corresponding to each of the through holes; a plurality of partition plates are respectively disposed at the open end, each of the partition plates includes a shielding piece and the shielding is connected An arcuate sheet of the sheet covering the inner surface of the first capillary structure, the curved sheet covering the second capillary structure, thereby forming a gas on each of the two sides of the separator a flow path and a liquid flow path; and a working fluid filled in the cavity. A thermally conductive structure having a liquid-gas separation mechanism as claimed in claim 1, wherein the separator is a gas-impermeable sheet. A thermally conductive structure having a liquid-gas separation mechanism as claimed in claim 2, wherein the separator is a copper foil or an aluminum foil. A thermally conductive structure having a liquid-gas separation mechanism according to claim 1, wherein the radius of curvature of the curved sheet is equal to the radius of curvature of the inner surface of the second capillary structure. A heat conducting structure having a liquid-gas separation mechanism according to claim 1, wherein each of the shielding sheets is connected to each other and combined into a long strip-shaped shielding sheet. A thermally conductive structure having a liquid-gas separation mechanism according to claim 1, wherein an end surface of the second capillary structure and the first capillary structure are in contact with each other. A thermally conductive structure having a liquid-gas separation mechanism according to claim 1, wherein the first capillary structure is a metal woven mesh, a fiber bundle or a metal powder sinter. A thermally conductive structure having a liquid-gas separation mechanism according to claim 1, wherein the second capillary structure is a metal woven mesh, a fiber bundle or a metal powder sinter.