TWI601934B - Vapor chamber and heat pipe combined structure and combination method thereof - Google Patents

Description

Temperature-warming plate and heat pipe combined structure and combination method thereof

The invention relates to a heat conduction technology, in particular to a combination of a uniform temperature plate and a heat pipe and a combination method thereof.

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, thus limiting the heat dissipation performance.

In order to solve the above problems, the heat pipe and the temperature equalizing plate have been combined to form a combined 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 temperature equalizing plate and heat pipe combination structure, although having the effect of conducting heat dissipation, has the following problems: since the capillary structure inside the heat pipe fails to adhere to the capillary structure inside the temperature equalizing plate, Causing an interruption or discontinuity in the process of returning the liquid working fluid to the reflux In all cases, the efficiency of conduction heat dissipation will be greatly reduced. In addition, the wall thickness of the temperature equalizing plate is generally quite thin. In order to allow the heat pipe to be stably held on the temperature equalizing plate, it is necessary to form a convex ring on the wall plate of the temperature equalizing plate to provide heat pipe support, thus causing The cumbersome process and the increase in production costs are urgently needed to be improved.

An object of the present invention is to provide a combination structure of a temperature equalizing plate and a heat pipe and a combination method thereof, which not only facilitates the connection and fixing of the heat pipe, but also can increase the reflow speed of the liquid working fluid.

In order to achieve the above object, the present invention provides a combination of a temperature equalizing plate and a heat pipe, including a heat pipe, a temperature equalizing plate, and a working fluid. The heat pipe comprises a pipe body, a fixing section extending from one end of the pipe body, and a first capillary structure disposed in the pipe body. The temperature equalizing plate comprises an upper metal shell and a lower metal shell correspondingly sealed to the upper metal shell, and a cavity and a second capillary structure disposed in the cavity are formed between the upper metal shell and the lower metal shell. The lower metal shell has a vertical plate, and a penetrating portion of the connecting cavity is opened in the vertical plate, wherein the heat pipe penetrates the penetrating portion and the fixing portion is connected with the metal shell, so that the first capillary structure is connected with the second capillary structure. The working fluid is filled in the cavity.

In order to achieve the above object, the present invention further provides a method for combining a temperature equalizing plate and a heat pipe, the steps comprising: a) providing a tubular body with one end extending to form a fixed segment and having a first capillary structure in the tubular body; b) The tube body having the fixing section is connected to an inner wall of the upper metal shell, and the metal powder is coated on the inner wall of the upper metal shell, sintered to form a second capillary structure and connected to the first capillary structure; c) The upper metal shell is closely sealed with the metal shell, and a space is formed between the upper metal shell and the lower metal shell. a cavity, and at least one vertical plate of the lower metal shell is further provided with a penetrating portion for the pipe body to be connected; and d) filling a working fluid into the cavity and applying a degassing seal.

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 flow rate of the working fluid. By attaching the fixing sections of different structures to the corresponding upper metal shell, the first capillary structure and the second capillary structure can be easily attached, and the liquid working fluid can be quickly returned to the temperature equalizing plate. Within the cavity, the thermal conductivity of the present invention is effectively improved. In addition, the upper metal shell of the present invention can be arranged in a fixed portion corresponding to various structural changes, and is correspondingly disposed as an abutting portion, and then welded and sealed to achieve the effect of conducting heat and fixing the heat pipe.

10‧‧‧heat pipe

12‧‧‧ tube body

14‧‧‧Fixed section

16‧‧‧First capillary tissue

18‧‧‧closed end

20‧‧‧Open end

22‧‧‧ cutting edge

24‧‧‧ wing

26‧‧‧Arc tube department

30‧‧‧Wall plate

32‧‧‧Upper metal shell

322‧‧‧Attachment

34‧‧‧Under metal shell

36‧‧‧Support

38‧‧‧Legs

40‧‧‧ penetration department

42‧‧‧floor

46‧‧‧ cavity

50‧‧‧Second capillary tissue

60‧‧‧Working fluid

70‧‧‧ Heat sink fins

a, b, c, d‧‧‧ steps

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded perspective view of a first preferred embodiment of the present invention.

Figure 2 is a combination diagram of a first preferred embodiment of the present invention.

Figure 3 is a cross-sectional view of the combination of the first preferred embodiment of the present invention.

Figure 4 is an exploded perspective view of a second preferred embodiment of the present invention.

Figure 5 is a combination diagram of a second preferred embodiment of the present invention.

Figure 6 is a cross-sectional view showing the assembly of a second preferred embodiment of the present invention.

Figure 7 is a cross-sectional view of another combination of a second preferred embodiment of the present invention.

Figure 8 is a reference diagram of the use of the second preferred embodiment of the present invention.

Figure 9 is a block diagram showing the flow of a method for combining a temperature equalizing plate and a heat pipe according to the present invention.

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

Please refer to FIG. 1 to FIG. 3, which are related diagrams of a first preferred embodiment of the present invention. As shown, the present invention provides a combination of a temperature equalizing plate and a heat pipe, which mainly includes a heat pipe 10, a temperature equalizing plate 30, and a working fluid 60. The temperature equalizing plate and the heat pipe combination structure can be applied to a heat dissipation technology such as a computer host, a server, or an industrial host.

The heat pipe 10 includes a tubular body 12, a fixed section 14 extending from one end of the tubular body 12, and a first capillary structure 16 disposed within the tubular body 12 and disposed along the fixed section 14. The tube body 10 can be made of a material having good thermal conductivity such as copper, aluminum or other suitable alloy, and has a closed end 18 and an open end 20 extending from the open end 20 to the outside of the tube body 12 form.

The tubular body 12 further includes a cutting edge 22 which is cut, for example, by a cutter or a cutting tool. The cutting edge 22 extends to join the fixing section 14 to form the fixing section 14 into a flat shape. As shown in Fig. 3, the cutting edge 22 is perpendicular to the tubular body 12 at one end, and the other end is obliquely connected to the fixing section 14 so as to form the fixing section 14 into the flat shape. The first capillary structure 16 can be made of a metal woven mesh, a fiber bundle, a metal powder sinter or other suitable material. The first capillary structure 16 is disposed on the inner wall of the tubular body 12 and disposed along the inner wall surface of the fixed section 14.

The temperature equalizing plate 30 includes an upper metal shell 32, a lower metal shell 34 corresponding to the upper metal shell 32, and a plurality of support bodies 36. A cavity 46 and a second capillary structure 50 disposed in the cavity 46 are formed between the upper metal shell 32 and the lower metal shell 34. The upper metal shell 32 has an abutting portion 322, and the lower metal shell 34 has a plurality of vertical plates 38, for example four, so that the temperature equalizing plate 30 is formed into a rectangular casing, and at least one vertical plate 38 is provided with a connecting cavity 46. The penetration portion 40 is inserted. The upper metal shell 32, the lower metal shell 34 and the plurality of supports 36 may be copper, Made of conductive materials such as aluminum or its alloys. The second capillary structure 50 can be made of a metal woven mesh, a fiber bundle, a metal powder sinter or other suitable material.

Each of the support bodies 36 is respectively disposed between the upper metal shell 32 and the lower metal shell 34, and one end is in closer contact with the second capillary structure 50, thereby preventing the temperature equalization plate 30 from being deformed under normal temperature or high temperature conditions. Each support body 36 preferably extends from a bottom plate 42 of the lower metal shell 34 to a second capillary structure 50 of the upper metal shell 32, and a second capillary structure 50 is disposed on the surface of each support body 36. The shape of each support body 36 includes, but is not limited to, a cylindrical shape, a triangular shape, an elliptical shape, or other suitable shape, and is not limited.

In the first embodiment, the fixing portion 14 preferably extends directly from both sides of the cutting edge 22, and the parallel abutting portion 322 is disposed. That is, the shape of the fixing portion 14 is a flat plate, and the abutting portion 322 is a flat surface, so that the fixing portion 14 abuts against the abutting portion 322, so that the heat pipe 10 corresponds to the vertical plate 38 with the open end 20 The inlet portion 40 is threaded and secured to the temperature equalization plate 30 by the fastening portion 14 such as by welding against the attachment portion 322.

The piercing portion 40 in this embodiment is preferably a through slot; however, in other different embodiments, the penetrating portion 40 can also be a hole formed by a perforation or upper/lower metal shells 32, 34. In addition, the present embodiment further includes a third capillary structure (not shown) connecting the first capillary structure 16 and the second capillary structure 50.

Please refer to FIG. 4 to FIG. 8 together for a related illustration of a second preferred embodiment of the present invention. The difference between this embodiment and the foregoing embodiment is that the fixing section 14 in this embodiment can also be an arc-shaped tube portion 26 between the wing plate 24 and the two wing plates 24 extending from the two sides of the cutting edge 22, and the upper metal portion The attachment portion 322 of the case 32 is an arcuate groove 322 to be in close contact with the curved tube portion 26.

The working fluid 60 is filled in the cavity 46, wherein the heat pipe 10 is threaded into the penetration portion 40 and the fastening segment 14 is coupled to the abutment portion 322 to connect the first capillary structure 16 with the second capillary structure 50. So that can be returned The flowing liquid working fluid 60 flows smoothly from the first capillary structure 16 through the second capillary structure 50, thereby increasing the reflux velocity of the liquid working fluid 60.

The working fluid 60 of the present embodiment is preferably water or a mixture thereof, and communicates with the cavity 46 through a liquid-incorporating degassing tube (not shown) to fill the upper metal shell 11 and the lower metal shell 12 with the working fluid 40. In the formed cavity 46, the degassing process is performed by means of the liquid-incorporating degassing pipe and the sealing operation is performed on the liquid-incorporating degassing pipe, thereby completing the combined structure of the temperature equalizing plate and the heat pipe of the present embodiment.

Please refer to FIG. 9 for further reference to the flow chart of the method for combining the temperature equalizing plate and the heat pipe of the present invention. The foregoing uniform temperature plate and heat pipe combination structure can be obtained by the following method, and the steps thereof include:

a) A tubular body 12 is provided with one end extending to form a fixed section 14 and the tubular body 12 is provided with a first capillary structure 16 along the fixed section 14. The tube body 10 in this step may be made of a conductive material such as copper, aluminum or an alloy thereof. Before this step, the tube body 14 is further cut into a cutting edge 22, so that the fixing portion 14 forms a flat plate or a two-wing plate 24 which is connected by two sides of an arc-shaped pipe portion 26.

b) connecting the tube body 14 having the fixing portion 14 to the inner wall of the upper metal shell 32, coating the metal powder (not shown) on the inner wall of the upper metal shell 32, sintering to form a second capillary structure 50 and the first capillary Organization 16 connections. In this step, the fastening section 14 is preferably welded to the inner wall of the upper metal shell 32 by spot welding, plasma welding or other suitable welding means. Further, it is further included that the inner wall of the lower metal shell 34 is simultaneously coated with the metal powder, and then sintered together with the upper metal shell 32 to form the second capillary structure 50.

c) The upper metal shell 32 is tightly sealed to the lower metal shell 34, and a cavity 46 is formed between the upper metal shell 32 and the lower metal shell 34, and at least one vertical plate 38 of the lower metal shell 34 is further provided with a tube. A penetrating portion 40 is formed by the body 14. In this step, the upper metal shell 34 and the lower metal shell 34 may be made of a conductive material such as copper, aluminum or an alloy thereof, and the upper metal shell 32 and the lower metal shell 34 are vertically overlapped and respectively The periphery is welded and sealed. A bottom plate 42 of the lower metal shell 34 is more integrally formed and has a plurality of support bodies 36 extending upright. The surface of each support body 36 is also coated with metal powder and sintered to form a second capillary structure 50.

d) A working fluid 60 is filled into the cavity 46 and sealed after degassing. The working fluid 60 in this step may be water or a mixture thereof, and the working fluid 40 is filled into the upper metal shell 11 and the lower metal shell 12 through an inflow degassing tube (not shown) communicating with the chamber 46. In the cavity 46, the degassing process is performed by means of the liquid-incorporating degassing pipe and the sealing operation is performed on the liquid-incorporating degassing pipe, thereby completing the combined structure of the temperature equalizing plate and the heat pipe of the embodiment.

In a preferred embodiment of step a), the cutting edge 22 is cut, for example, by a cutter or cutting tool, and then bent flattened into the fixed section 14. However, in another preferred embodiment, when the wings 24 connected to the two sides of the curved tube portion 26 are connected to the inner wall of the upper metal shell 32, the upper metal shell 32 is further formed into an arcuate groove. (ie, the attachment portion 322) is welded to the curved tube portion 26.

In step b), the second capillary structure 50 may also be laid out from a metal woven mesh, a fiber bundle or other composite material, and is not limited. Furthermore, the connection of the second capillary tissue 50 to the first capillary tissue 16 further comprises joining the two in a third capillary structure (not shown). That is, the first capillary structure 16 formed in the tubular body 12 and the second capillary structure 50 formed in the upper metal shell 32 are disposed correspondingly, and the metal powder is coated between the two and then sintered, so that The second capillary structure is connected to the second capillary structure 50 and the first capillary structure 16. In this embodiment, a plurality of heat dissipation fins 70 are assembled on the tube body 12 near the closed end 18 to increase the heat dissipation effect.

In summary, the combination of the uniform temperature plate and the heat pipe of the present invention and the combination method thereof can achieve the intended use purpose, and solve the lack of the prior art, and because of the novelty and the progressiveness, fully meet the requirements of the invention patent application. In accordance with the Patent Law, please apply for the patent in detail, so as to protect the rights of the inventor.

10‧‧‧heat pipe

12‧‧‧ tube body

14‧‧‧Fixed section

16‧‧‧First capillary tissue

20‧‧‧Open end

22‧‧‧ cutting edge

30‧‧‧Wall plate

32‧‧‧Upper metal shell

34‧‧‧Under metal shell

36‧‧‧Support

38‧‧‧Legs

40‧‧‧ penetration department

42‧‧‧floor

46‧‧‧ cavity

50‧‧‧Second capillary tissue

60‧‧‧Working fluid

Claims (13)

A uniform temperature plate and heat pipe combination structure, comprising: a heat pipe, comprising a pipe body, a fixing segment extending from one end of the pipe body, and a first capillary structure disposed in the pipe body, wherein the pipe body has a closed An end portion, an open end and a cutting edge, the fixing portion is formed by extending from the open end to the outside of the tube body; a temperature equalizing plate comprising an upper metal shell and a lower metal shell corresponding to the metal shell tightly sealed Forming a cavity between the upper metal shell and the lower metal shell and a second capillary structure disposed in the cavity, the lower metal shell having a vertical plate, and the vertical plate is provided with the connection a penetrating portion of the cavity, wherein the heat pipe is connected to the penetrating portion and the fixing portion is connected to the upper metal shell, so that the first capillary structure is connected to the second capillary structure, and the upper metal shell has a An abutting portion, the cutting edge is extended to connect the fixing portion and parallel to the abutting portion, wherein the fixing portion is a wing extending from two sides of the cutting edge and an arc tube portion between the two wings The attachment portion is an arc groove And a working fluid filling the cavity of. The combination of the temperature equalizing plate and the heat pipe according to claim 1, wherein the fixing portion has a flat shape, and the abutting portion is a flat surface. The uniform temperature plate and heat pipe combination structure according to claim 1, wherein the first capillary structure extends from the pipe body to the fixed portion and is connected to the second capillary structure. The combination of the temperature equalizing plate and the heat pipe according to claim 1, wherein the temperature equalizing plate further comprises a plurality of supporting bodies, each of the supporting bodies being respectively disposed between the upper metal shell and the lower metal shell. The combination of the temperature equalizing plate and the heat pipe according to claim 4, wherein each of the supporting bodies extends from a bottom plate of the lower metal shell to the second capillary structure of the upper metal shell, and the surface of each of the supporting bodies is further disposed. The second capillary tissue. The combination of the temperature equalizing plate and the heat pipe according to claim 1, wherein the tube body is further provided with a plurality of heat dissipating fins at one end. The combination of the temperature equalizing plate and the heat pipe according to claim 1, wherein the penetrating portion is a perforation or a through groove. The uniform temperature plate and heat pipe combination structure according to claim 1, further comprising a third capillary structure connecting the first capillary structure and the second capillary structure. A method for combining a temperature equalizing plate and a heat pipe comprises the steps of: a) providing one end of a pipe body extending to form a fixed section and having a first capillary structure in the pipe body, cutting the pipe body with a cutting edge to fix the pipe body The segment forms a flat plate or a two-wing plate which is connected by two sides of an arc-shaped pipe portion; b) connects the pipe body having the fixing portion to an inner wall of the upper metal shell, and coats the metal powder on the upper metal shell An inner wall, sintered to form a second capillary structure and connected to the first capillary structure, wherein when the wing plates connected to both sides of the curved pipe portion are connected to the inner wall of the upper metal casing, The upper metal shell is formed into an arcuate groove to be correspondingly connected with the arcuate tube portion, and then welded and sealed; c) the upper metal shell is tightly sealed corresponding to the lower metal shell, and the upper metal shell is sealed with the metal shell Forming a cavity between the lower metal shells, and at least one vertical plate of the lower metal shell is further provided with a penetrating portion for the pipe body to be connected; and d) filling a working fluid into the cavity and applying Sealed after degassing. The method for combining a temperature equalizing plate and a heat pipe according to claim 9, wherein in the step b), the fixing portion is fixed to the inner wall of the upper metal shell by spot welding or plasma welding. The method for combining a temperature equalizing plate and a heat pipe according to claim 9, wherein in step b), the inner metal shell is coated with the metal powder at the same time, and then sintered together with the upper metal shell to form the metal shell. Second capillary tissue. The combination method of the temperature equalizing plate and the heat pipe according to claim 11, wherein in the step c), a bottom plate of the lower metal shell is more integrally formed and a plurality of supports are erected, and the surface of each of the support bodies is coated with metal. The powder is sintered and formed into the second capillary structure. The combination method of the temperature equalizing plate and the heat pipe according to claim 9, wherein after the step b), the second capillary structure is connected to the first capillary structure by a third capillary structure.