TWM522331U - Heat pipe and heat spreader assembly structure - Google Patents

Description

Heat pipe and temperature equalizing plate assembly structure

This creation is related to a heat conduction technology, especially a heat pipe and a uniform temperature plate assembly structure.

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.

One of the aims of the present invention is to provide a heat pipe and a temperature equalizing plate assembly structure, which not only simplifies the process, but also effectively improves 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 structure, including a temperature equalizing plate, a heat pipe, a porous sintered structure and a working fluid, the temperature equalizing plate including 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.

The detailed description and technical content of the present invention are described below with reference to the drawings, but the drawings are only for reference and explanation, and are not intended to limit the creation.

Referring to FIG. 1 to FIG. 6 , the present invention provides a heat pipe and a temperature equalizing plate assembly structure, and the manufacturing method thereof comprises the following steps:

First, a metal plate 11a is prepared, and a through hole 111 and a ring wall 112 are formed on the metal plate 11a. Referring to FIG. 1 and FIG. 2, 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.

Next, a heat pipe 20 is prepared. The heat pipe 20 has an opening 211. The heat pipe 20 is formed with a stopper 24; as shown in FIG. 3, this step can be performed before or after the foregoing steps, and the heat pipe 20 in this step can be It is 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 trench. A stop portion 24 is formed at a position where the open end 21 of the heat pipe 20 is close to the opening 211 by a forming fixture (not shown). The position of the stop portion 24 is about 0.5 to 10 mm from the end edge of the open end 21. The stop portion 24 of the embodiment is an annular groove.

Then, the heat pipe 20 is erected corresponding to the annular wall 112 so that the opening 211 communicates with the through hole 11; as shown in FIG. 4, this step is to apply an adhesive (such as tin) to the outer peripheral wall of the open end 21 of the heat pipe 20. After the paste is not shown, the open end 21 of the heat pipe 20 is connected to the annular wall 112 so that the opening 211 and the through hole 111 communicate with each other. The open end 21 of this embodiment is accommodated inside the ring wall 112. .

Then, a mandrel 8 is inserted from the perforation 111 and blocked by the stopper 24; as shown in FIG. 4, 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 is positioned by the stop portion 24 to be positioned.

Next, 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. 5, this step is to fill a metal powder 9 from the perforations 111 to form an outer periphery of the mandrel 8. The metal powder 9 may be sprinkled between the inner wall 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 structure. Powder sinter.

Then, a semi-finished product of the previous step is subjected to a sintering process to form a porous sintered structure 30 between the through hole 111 and the stopper portion 24, and constitutes an upper casing 11; as shown in FIG. The step is to carry out the foregoing semi-finished product filled with the metal powder 9 and sprinkled with the metal powder 9 and sent to a heating device (not shown) for a sintering process. After the sintering process, the mandrel 8 must be removed, thereby A porous sintered structure 30 (shown in FIG. 6) is formed between the periphery of the through hole 111 and the stopper portion 24, and constitutes an upper casing 11. After the process, the porous sintered structure 30 is connected to the first capillary structure. 13 and second capillary tissue 23.

Then, the housing 12 is prepared, and the lower housing 12 is sealed and connected to the upper housing 11; as shown in FIG. 6, in this step, the lower housing 12 has been pre-machined to form a cavity and is disposed in the cavity. a third capillary structure 14 in the interior, 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 A cavity A is formed between the upper casing 11 and the lower casing 12.

Finally, a semi-finished product and a degassing sealing process are applied to the semi-finished product of the previous step. Referring to FIG. 6, 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 of degassing, sealing, and the like is performed. Finish the production.

Referring to FIG. 6 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 are 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, thereby forming a continuous return path and thereby increasing the liquid reflux speed. .

Referring to FIG. 7 , in addition to the foregoing implementation, 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. 8 , the heat pipe of the present embodiment is different from the heat pipe of the foregoing embodiment in the stop portion. The stop portion 24 a 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. 9, 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 isothermal plate assembly structure and method of the present invention can achieve the intended use purpose, and solve the lack of the conventional, and because of the novelty and progress, fully comply with the new patent application requirements. If you apply for an application under the Patent Law, please check and grant the patent in this case to protect the rights of the creator.

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

Figure 1 is a cross-sectional view of the metal plate of the present invention.

Figure 2 is a cross-sectional view of the metal sheet of the present invention after forming.

Figure 3 is a cross-sectional view of the heat pipe of the present invention after forming.

Figure 4 is a cross-sectional view of the metal plate, heat pipe and mandrel of the present invention.

Figure 5 is a cross-sectional view of the inner wall of the metal powder filled with perforations and metal sheets.

Figure 6 is a cross-sectional view showing the combination of the upper and lower upper casings of the present invention.

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

Figure 8 is an external view of another embodiment of the heat pipe of the present invention.

Figure 9 is a cross-sectional view showing still another embodiment of the heat pipe of the present invention.

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 (10)

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 a sealing connection of the lower casing, wherein a gap is formed between the upper casing and the lower casing a 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, the heat pipe is erected corresponding to the ring wall and communicates with the perforation, the heat pipe is adjacent to the cavity The opening is shaped with a stop; a porous sintered structure formed between the perforations and the stop; and a working fluid filled in the cavity. The heat pipe and the temperature equalizing plate assembly structure according to claim 1, wherein a first capillary structure is disposed inside the cavity, and a second capillary structure is disposed inside the heat pipe, and the porous sintered structure is connected to the first capillary structure and The second capillary tissue. The heat pipe and the temperature equalizing plate assembly structure according to claim 2, 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 received in the Inside the ring wall. The heat pipe and the temperature equalizing plate assembly structure according to claim 3, 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 2, 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 5, 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 2, 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 2, 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 2, wherein the stopping portion is an inner retaining ring formed on an inner wall of the heat pipe. The heat pipe and the temperature equalizing plate assembly structure according to claim 1, wherein the perforation, the ring wall and the heat pipe are plural and the same amount.