TWI601931B - Heat and vapor chamber connecting structure and method thereof - Google Patents

Description

Heat pipe and temperature equalizing plate assembly structure and method thereof

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

As the computing speed of electronic components continues to increase, the heat generated by them is becoming higher and higher. In order to effectively solve the problem of high heat generation, the industry has widely used uniform temperature plates and heat pipes with good thermal conductivity characteristics. However, such a temperature equalizing plate and a heat pipe have room for improvement, such as heat conductivity, production cost, and ease of manufacture.

The conventional uniform temperature plate and heat pipe assembly structure mainly sets the heat pipe on the temperature equalization plate, and the internal spaces of the two are not connected to each other, and only the heat conduction method can be used for heat conduction and dissipation, and the foregoing structure is The uniform temperature plate and the heat pipe uniform temperature effect cannot be achieved, and the heat conduction effect is greatly reduced. In order to solve the above problems, the industry has a perforation for the connection of the heating pipe on the temperature equalizing plate. However, in the manufacturing process, there are problems such as cumbersome and complicated processes, and the circulation effect of the internal working fluid is also poor, which needs to be improved.

An object of the present invention is to provide a heat pipe and a temperature equalizing plate assembly structure and a method thereof, which can not only simplify the process, but also effectively improve the heat conduction and heat dissipation performance.

In order to achieve the above object, the present invention provides a heat pipe and a temperature equalizing plate assembly method, the steps comprising: a) preparing a metal plate, forming a perforation and a ring wall for the metal plate; b) preparing a heat pipe, The heat pipe has an opening, and the heat pipe is formed with a stopper; c) the heat pipe is erected corresponding to the ring wall to communicate the opening with the hole; d) inserting a core rod from the hole and being Blocked by the stopper; e) filling a metal powder from the perforation to form an outer periphery of the mandrel; f) performing a sintering process on the semi-finished product of step e), thereby perforating to the stop portion Forming a porous sintered structure between them and forming an upper casing; g) preparing a casing, sealing the lower casing corresponding to the upper casing; and h) applying a semi-finished product through the step g) Filling and a degassing sealing process.

In order to achieve the above object, the present invention provides a heat pipe and a temperature equalizing plate assembly structure, comprising a temperature equalizing plate, a heat pipe, a porous sintered structure and a working fluid, the temperature equalizing plate comprising a lower casing and a pair An upper casing sealingly connected to the lower casing, a cavity formed between the upper casing and the lower casing, the upper casing being provided with a perforation and a ring wall extending from the periphery of the perforation; The heat pipe has an opening, the heat pipe is erected corresponding to the ring wall and communicates with the through hole, and a stop portion is formed at a position of the heat pipe near the opening; the porous sintered structure is formed in the through hole to the stop portion Between; the working fluid is filled in the cavity.

The present invention also has the effect of connecting the first capillary structure and the second capillary structure by the porous sintered structure, thereby achieving a good circulation effect of the internal working fluid.

10‧‧‧Wall plate

11a‧‧‧Metal sheet

11‧‧‧Upper casing

111‧‧‧Perforation

112‧‧‧Circle wall

12‧‧‧ Lower case

13‧‧‧First capillary tissue

14‧‧‧ Third capillary tissue

A‧‧‧ cavity

20‧‧‧heat pipe

21‧‧‧Open end

211‧‧‧ openings

22‧‧‧closed end

23‧‧‧Second capillary tissue

24, 24a, 24b‧‧‧ stop

30‧‧‧Porous sintered structure

40‧‧‧Working fluid

8‧‧‧ mandrel

9‧‧‧Metal powder

a~h‧‧‧step

Figure 1 is a flow chart of the method of the present invention.

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

Figure 3 is a cross-sectional view showing the metal sheet of the present invention after being formed.

Figure 4 is a cross-sectional view showing the heat pipe of the present invention after forming.

Figure 5 is a cross-sectional view showing a combination of a metal plate, a heat pipe and a mandrel of the present invention.

Figure 6 is a cross-sectional view showing the inner wall of the metal powder of the present invention filled with perforations and metal sheets.

Figure 7 is a cross-sectional view showing the upper housing and the lower upper housing of the present invention.

Figure 8 is a cross-sectional view showing another embodiment of the present invention.

Figure 9 is an external view of another embodiment of the heat pipe of the present invention.

Figure 10 is a cross-sectional view showing still another embodiment of the heat pipe 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 to FIG. 7 , the present invention provides a method for assembling a heat pipe and a temperature equalizing plate, and the method steps thereof include:

a) preparing a metal plate 11a, forming a through hole 111 and a ring wall 112 for the metal plate 11a; as shown in FIG. 2 and FIG. 3, the metal plate 11a in this step may be made of aluminum, copper or an alloy thereof. Forming a punching and extending process for the metal plate 11a by a molding die (not shown) to form a plurality of through holes 111 and a ring wall 112 extending from the periphery of each of the through holes 111, respectively, on the metal plate 11a. The number of perforations 111 can be selected according to actual needs, and the micro heat sink can also be set by a single through hole 111.

b) a heat pipe 20 is provided, the heat pipe 20 has an opening 211, and the heat pipe 20 is processed to form a stop portion 24; as shown in FIG. 4, step b) can be performed before or after step a), the heat pipe in this step 20 may be made of aluminum, copper or an alloy thereof, and has an open end 21 and a closed end 22 away from the open end 21, the open end 21 has an opening 211, and the inside of the heat pipe 20 is provided with a second capillary structure 23 The second capillary structure 23 can be a metal woven mesh, a porous powder sinter or a groove. In a A forming fixture (not shown) is formed with a stop portion 24 at a position near the opening 211 of the open end 21 of the heat pipe 20. The position of the stop portion 24 is between 0.5 and 10 mm from the end of the open end 21. The stop portion 24 of this embodiment is an annular groove.

c) the heat pipe 20 is erected corresponding to the ring wall 112, so that the opening 211 is in communication with the through hole 11; as shown in FIG. 5, this step is to apply an adhesive (such as solder paste) to the outer peripheral wall of the open end 21 of the heat pipe 20. After the figure is not shown, the open end 21 of the heat pipe 20 is connected to the ring wall 112 so that the opening 211 and the through hole 111 communicate with each other. The open end 21 of this embodiment is housed inside the ring wall 112.

d) inserting a mandrel 8 from the perforation 111 and being blocked by the stopper 24; as shown in FIG. 5, this step is to insert a mandrel 8 from the perforation 111 and the open end 21 of the heat pipe 20 into the opening 211 and Positioned by the aforementioned stop portion 24.

e) a metal powder 9 is filled from the perforations 111 to be formed around the outer periphery of the mandrel 8; as shown in Fig. 6, this step is to fill a metal powder 9 from the perforations 111 to form around the outer periphery of the mandrel 8 and The metal powder 9 may be sprinkled between the inner walls of the open end 21 of the heat pipe 20 and the inner wall of the metal plate 10 to form a first capillary structure 13, which is a porous powder. Sintered material.

f) performing a sintering process on the semi-finished product of step e) to form a porous sintered structure 30 between the perforations 111 and the stoppers 24, and forming an upper casing 11; see FIG. The semi-finished product which has been filled with the metal powder 9 and sprinkled with the metal powder 9 is sent to a heating device (not shown) for sintering, and the mandrel 8 must be removed after the sintering process, thereby perforating A porous sintered structure 30 (shown in FIG. 7) is formed between the periphery of the 111 and the stopper portion 24, and constitutes an upper casing 11, and the porous sintered structure 30 after the completion of the process is connected to the first capillary structure 13 And a second capillary structure 23.

g) preparing the housing 12, and sealing the lower housing 12 corresponding to the upper housing 11; as shown in FIG. 7, in this step, the lower housing 12 has been pre-machined to form a cavity and disposed inside the cavity. a third capillary structure 14, the third capillary structure 14 may be a metal woven mesh, a porous powder sinter or a groove, etc., and the lower casing 12 is welded and sealed corresponding to the upper casing 11 so that A cavity A is formed between the upper casing 11 and the lower casing 12.

h) applying a liquid filling and a degassing sealing process to the semi-finished product of step g). Referring to FIG. 7, in this step, a liquid such as water is filled into the chamber A through an infusion degassing tube (not shown), and a processing step such as degassing and sealing is performed. Finish the production.

Referring to FIG. 7 again, the present invention provides a heat pipe and a uniform temperature plate assembly structure, including a Vapor Chamber 10, a Heat Pipe 20, a porous sintered structure 30, and a work. The fluid 40, the temperature equalizing plate 10 includes a lower casing 12 and an upper casing 11 correspondingly connected to the lower casing 12, and a cavity A is formed between the upper casing 11 and the lower casing 12 in the cavity A. The inner casing 11 is provided with a first capillary structure 13 , and the upper casing 11 is provided with a through hole 111 and a ring wall 112 extending from the periphery of the through hole 111 . The heat pipe 20 has an opening 211 and a second capillary structure 23 is disposed therein, and the heat pipe 20 is opened. 211 corresponding to the annular wall 112 is erected and communicates with the through hole 111, and a stop portion 24 is formed at a position of the heat pipe 20 near the opening 211; the porous sintered structure 30 is formed between the through hole 111 and the stopper portion 24 and connects the first capillary structure 13 and second capillary structure 23; the working fluid 40 is filled in the cavity A.

When in use, the liquid working fluid 40, upon heating, will evaporate to form a gaseous working fluid 40 that will carry a significant amount of heat toward the opening 211 of each heat pipe 20 and to the closed end 22 of the heat pipe 20. The gaseous working fluid 40 will be condensed into a liquid working fluid 40 and sequentially passed through the second capillary structure 23, porous sintered structure after being dissipated through the heat pipe 20 in contact with a plurality of fins (not shown). 30 and the first capillary structure 13 and returned to the cavity A Since the first capillary structure 13 and the second capillary structure 23 are connected through the porous sintered structure 30, a continuous reflux path is formed to increase the reflux speed of the liquid.

Referring to FIG. 8 , in addition to the foregoing embodiment, the heat pipe and the temperature equalizing plate assembly structure of the present invention may be coated with an adhesive on the outer peripheral wall of the annular wall 112, and then the open end 21 of the heat pipe 20 is correspondingly The ring wall 112 is sleeved so that the opening 211 and the through hole 111 communicate with each other. The ring wall 112 of this embodiment is housed inside the open end 21.

Referring to FIG. 9, the heat pipe of the present embodiment is different from the heat pipe of the foregoing embodiment in the stop portion. The stop portion 24a of the embodiment is provided with a plurality of recesses at the open end 21 of the heat pipe 20 near the opening 211. The pit serves as a barrier to the insertion of the aforementioned core rod 8.

Referring to FIG. 10, the stopper portion 24b of the present embodiment directly forms an inner retaining ring near the inner wall of the opening 211 at the open end 21 of the heat pipe 20, thereby acting as a barrier after the insertion of the mandrel bar 8.

In summary, the heat pipe and the uniform temperature plate assembly structure and the 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‧‧‧Wall plate

11a‧‧‧Metal sheet

11‧‧‧Upper casing

111‧‧‧Perforation

112‧‧‧Circle wall

12‧‧‧ Lower case

13‧‧‧First capillary tissue

14‧‧‧ Third capillary tissue

A‧‧‧ cavity

20‧‧‧heat pipe

21‧‧‧Open end

211‧‧‧ openings

22‧‧‧closed end

23‧‧‧Second capillary tissue

24‧‧‧stop

30‧‧‧Porous sintered structure

40‧‧‧Working fluid

Claims (13)

A heat pipe and a uniform temperature plate assembly method, the steps comprising: a) preparing a metal plate, forming a perforation and a ring wall for the metal plate; b) preparing a heat pipe having an opening and a second inner cloth a capillary structure formed with a stopper at a position near the opening of the heat pipe; c) erecting the heat pipe corresponding to the ring wall to communicate the opening with the hole; d) inserting a core rod from the hole And being blocked by the stopper; e) disposing a metal powder only on the inner side surface of the metal plate and filling from the perforation to form an outer periphery of the mandrel; f) performing a semi-finished product through the step e) Sintering, so that a first capillary structure is formed on the metal plate and a porous sintered structure connecting the first capillary structure and the second capillary structure is formed between the through hole and the stopper, and constitutes a The upper casing; g) preparing the casing, sealing the lower casing to the upper casing; and h) applying a liquid filling and a degassing sealing process to the semi-finished product of the step g). The heat pipe and the temperature equalizing plate assembly method according to claim 1, wherein the step b) is performed before the step a). The heat pipe and the temperature equalizing plate assembly method according to claim 1, wherein the heat pipe in the step c) has an open end, the opening is formed at the open end, and the open end is connected to the ring wall, thereby The open end is received inside the ring wall. The heat pipe and the temperature equalizing plate assembly method according to claim 1, wherein the first capillary structure and the porous sintered structure are integrally formed. The heat pipe and the temperature equalizing plate assembly method according to claim 1, wherein the heat pipe in the step c) has an open end, the opening is formed at the open end, and the open end is sleeved with the ring wall, thereby The ring wall is housed inside the open end. The utility model relates to a heat pipe and a temperature equalizing plate assembly structure, comprising: a temperature equalizing plate comprising a lower casing and an upper casing corresponding to the lower casing sealing connection, wherein a middle casing and the lower casing are formed between the upper casing and the lower casing a first capillary structure is disposed inside the cavity, the upper casing is provided with a perforation and a ring wall extending from the periphery of the perforation; a heat pipe having an opening and a second capillary structure disposed therein, the heat pipe The opening is corresponding to the annular wall and communicates with the through hole, and a stop portion is formed at a position of the heat pipe near the opening; a porous sintered structure is connected to the first capillary structure by the secondary sintering and the first Two capillary structures are formed between the perforations and the stop; and a working fluid is filled in the cavity. The heat pipe and the temperature equalizing plate assembly structure according to claim 6, wherein the heat pipe has an open end, the opening is formed at the open end, and the open end is connected to the ring wall, so that the open end is accommodated in the Inside the ring wall. The heat pipe and the temperature equalizing plate assembly structure according to claim 7, wherein the porous sintered structure is formed on the inner wall of the open end. The heat pipe and the temperature equalizing plate assembly structure according to claim 6, wherein the heat pipe has an open end, the opening is formed at the open end, and the open end is sleeved with the ring wall, so that the ring wall is accommodated in the ring wall Inside the open end. The heat pipe and the temperature equalizing plate assembly structure according to claim 9, wherein the porous sintered structure is formed on an inner wall of the ring wall. The heat pipe and the temperature equalizing plate assembly structure according to claim 6, wherein the stopping portion is an annular groove formed in the heat pipe. The heat pipe and the temperature equalizing plate assembly structure according to claim 6, wherein the stopping portion is a plurality of dimples formed in the heat pipe. The heat pipe and the temperature equalizing plate assembly structure according to claim 6, wherein the stopping portion is an inner retaining ring formed on the inner wall of the heat pipe.