TWI612272B - Heat dissipating module and assemblimg method thereof - Google Patents

Abstract

A heat dissipation module includes a heat pipe, a first fin set, a second fin set, and a third fin set. The heat pipe includes a first portion, a second portion, and a third portion connecting the first portion and the second portion. The third part is in a bent structure. The first portion, the second portion, and the third portion of the heat pipe are respectively disposed on the first fin group, the second fin group, and the third fin group, wherein the heat pipe, the first fin group, the second fin group, and the first fin group The three fin sets are thermally coupled. The invention further provides a method for assembling a heat dissipation module.

Description

Heat dissipation module and assembly method thereof

The invention relates to a heat dissipation module and an assembly method thereof, and in particular to a heat dissipation module with better heat dissipation performance and an assembly method thereof.

In general, in order to enable the computer system to operate normally, electronic components of the computer system with high heating power, such as a central processing unit (CPU), a memory module, a graphics processing unit (GPU), and a chipset ( Chipset), etc., must additionally install a thermal module to remove excess thermal energy away from the electronic components to prevent the temperature of the operating electronic components from exceeding their normal operating temperature limits.

A heat dissipation module is a function of using a fin set with a heat pipe to achieve heat dissipation. The fin group is composed of a plurality of fins arranged at intervals, and is in contact with the hot end and the cold end of the heat pipe to increase the heat dissipation area. Improve heat dissipation efficiency. In the heat dissipation design, it is often necessary to bend the heat pipe to match the space or improve the heat dissipation efficiency. Therefore, the heat pipe has a bent region between the hot end and the cold end. Due to the shape of the area where the heat pipe is bent and the bending angle of the bent area, the current fin group can only be disposed in the portion where the heat pipe has not been bent. However, as the heating power of electronic components is getting higher and higher, the heat dissipation efficiency of the current heat dissipation module is gradually insufficient.

The invention provides a heat dissipation module which has better heat dissipation efficiency.

The invention provides a method for assembling a heat dissipation module, which can assemble a heat dissipation module with better heat dissipation efficiency.

A heat dissipation module according to an embodiment of the invention includes a heat pipe, a first fin set, a second fin set, and a third fin set. The heat pipe includes a first portion, a second portion, and a third portion connecting the first portion and the second portion. The third portion has a bent structure. The first portion, the second portion, and the third portion of the heat pipe are respectively disposed on the first fin group, the second fin group, and the third fin group, wherein the heat pipe, the first fin group, and the second fin The set is thermally coupled to the third set of fins.

In an embodiment of the invention, the first fin set and the second fin set are respectively in close contact with opposite sides of the third fin set.

In an embodiment of the invention, the third fin set includes a detachable upper half and a lower half, and the upper half and the lower half respectively include an upper groove and a lower groove, and the upper groove Forming a space for accommodating the third portion of the heat pipe with the lower groove in an assembled state such that the upper and lower halves of the third fin set closely cover the third portion.

In an embodiment of the invention, the upper half and the lower half may be aluminum extrusions, castings, or computer numerical control (CNC) workpieces.

In an embodiment of the invention, the heat dissipation module further includes a heat dissipation substrate disposed on the same side of the first fin group and the third fin group, and contacting the first fin group and the third fin group And thermally coupled to the first fin set and the third fin set.

A method for assembling a heat dissipation module according to an embodiment of the present invention includes: configuring a first portion of a heat pipe to a first trench of a first fin set, wherein the heat pipe includes a first portion, a second portion, and a connection portion a portion and a third portion of the second portion, the third portion having a bent structure; configuring an upper half of the third fin set to a side of the third portion of the heat pipe, and configuring the lower half of the third fin set The other side of the third portion of the heat pipe, the upper half and the lower half form a space for tightly covering the third portion of the heat pipe in the assembled state, and fix the lower half to the upper half; and configure a second a second trench of the fin set to the second portion of the heat pipe; wherein the heat pipe, the first fin set, the second fin set, and the third fin set are thermally coupled.

In an embodiment of the invention, the first fin set and the second fin set are respectively in close contact with opposite sides of the third fin set.

In an embodiment of the invention, the upper half and the lower half respectively comprise an upper groove and a lower groove, and the inner contour formed by the upper groove and the lower groove is close to the outer contour of the third portion of the heat pipe. The upper and lower halves of the third fin set are tightly covered with the third portion.

In an embodiment of the invention, the upper half and the lower half may be aluminum extrusions, castings, or computer numerical control (CNC) workpieces.

In an embodiment of the present invention, the method for assembling the heat dissipation module further includes: disposing a heat dissipation substrate to one side of the first fin group and the third fin group, wherein the heat dissipation substrate contacts the first fin group and The three fin sets are thermally coupled to the first fin set and the third fin set.

Based on the above, the heat pipe of the heat dissipation module of the present invention has a first portion, a third portion and a second portion which are different and sequentially arranged in the extending direction axis, and the third portion is a bent structure. In the heat dissipation module of the present invention, in addition to the first fin group and the second fin group disposed on the first portion and the second portion of the heat pipe at both ends, the bent structure is bent and connected to the first A third fin set is also disposed on a portion and a third portion of the second portion. Therefore, the heat dissipation module has a larger heat dissipation area and can provide higher heat dissipation efficiency. The present invention further provides a method for assembling a heat dissipation module, which is configured to assemble a third fin group having a high precision of bending angle in a third portion of the heat pipe after the first fin group is disposed in the first portion of the heat pipe. After correcting the position of the second portion of the heat pipe, the second fin group having a lower bending angle precision is assembled to the second portion to avoid the heat pipe having a larger tolerance due to the bending angle of the bent third portion. A situation in which it is difficult to mount the third fin group occurs.

The above described features and advantages of the invention will be apparent from the following description.

The invention provides a method for assembling a heat dissipation module, which can assemble a heat dissipation module with better heat dissipation efficiency. This will be described in detail below.

FIG. 1 to FIG. 5 are schematic diagrams showing a method of assembling a heat dissipation module according to an embodiment of the invention. The assembly method of the heat dissipation module of this embodiment includes the following steps. First, referring to FIG. 1 and FIG. 2, a first portion 112 of a heat pipe 110 is disposed to a first trench 122 of a first fin set 120, wherein the heat pipe 110 includes a first portion 112 and a second portion 114. A third portion 116 is located between the first portion 112 and the second portion 114. The third portion 116 is in a bent configuration for joining the first portion 112 and the second portion 114. The relationship of the three portions in the illustration can be considered as being bently connected between the first portion 112 and the third portion 116, and the second portion 114 and the third portion 116 are bently connected.

As shown in FIG. 1 , in the embodiment, the number of the heat pipes 110 is plural, but in other embodiments, the heat pipe 110 may have only one, and the plurality of rows of the first portion 112, the second portion 114, and the third portion are bent. Part 116. The number of heat pipes 110 is not limited thereto. The first portion 112 of these heat pipes 110 is a hot end that contacts a heat source (not shown) and the second portion 114 is a cold end that is remote from the heat source. In a specific implementation, the first portion 112 (hot end) extending direction of the heat pipe 110 and the second portion 114 (cold end) extending direction are parallel to each other but not on the same axis.

In one embodiment, there are a plurality of heat pipes 110, and the distance between the two second portions 114 of the adjacent heat pipes 110 is greater than the distance between the two first portions 112. The first portion 112 and the second portion 114 are connected through the third portion 116. The third portion 116 is a bent structure, which is shown in the figure as a bend between the first portion 112 and the third portion 116, and second There is also a bend between the portion 114 and the third portion 116. Moreover, in an embodiment, the axes of extension of the first portion 112, the second portion 114, and the third portion 116 are different; but in other embodiments, the third portion 116 is curved with the first portion 112 and the second portion 114, respectively. The ground connection may be the same, and the axes of extension of the first portion 112 and the second portion 114 may be the same.

The heat pipe 110 described above is placed in the first trench 122 of the first fin set 120 in the step of FIG. In this embodiment, the first trench 122 is a recess recessed in the first fin set 120, and the first portion 112 of the heat pipe 110 can be directly placed on the first recess 122 of the first fin set 120 and then The first fin set 120 fixes the first portion 112 of the heat pipe 110 by, for example, soldering. Of course, the first trench 122 may also be a through-groove that is not exposed on the surface of the first fin set 120. The form of the first trench 122 and the first fin set 120 and the first portion 112 of the heat pipe 110 may be tight. Fixed or fixed by welding, the fixing method is not limited by the above.

Next, referring to FIG. 3, one upper half 142 of the third fin set 140 is disposed to one side of the third portion 116 of the heat pipe 110, and the lower half 146 of the third fin set 140 is disposed to the heat pipe 110. The other side of the three portions 116 and the lower half 146 are secured to the upper half 142.

In the present embodiment, the upper half 142 and the lower half 146 of the third fin set 140 respectively include an upper groove 144 and a lower groove 148 corresponding to the third portion 116 of the heat pipe 110, and the upper groove 144 is The inner contour formed by the lower recess 148 is adjacent to the outer contour of the third portion 116 of the heat pipe 110 such that the upper half 142 and the lower half 146 of the third fin set 140 closely surround the third portion 116.

In the present embodiment, the upper half 142 and the lower half 146 of the third fin set 140 can be fabricated by aluminum extrusion, that is, the upper half 142 and the lower half 146 of the third fin set 140 are The aluminum extrusion provides better precision of the upper groove 144 of the upper half 142 of the third fin set 140 and the lower groove 148 of the lower half 146. Of course, the manner in which the upper half 142 and the lower half 146 of the third fin set 140 are not limited by the aluminum extrusion process, in other embodiments, the upper half 142 and the lower half of the third fin set 140 The portion 146 can also be manufactured by computer numerical control (CNC) processing or casting to produce other high-precision objects.

Referring to FIG. 4 , a heat dissipation substrate 150 is disposed on the same side of the first fin group 120 and the third fin group 140 , wherein the heat dissipation substrate 150 contacts the first fin group 120 and the third fin group 140 , The heat dissipation substrate 150 is thermally coupled to the first fin set 120 and the third fin set 140. In other embodiments, the step of configuring the heat sink base 150 may also be omitted.

Finally, referring to FIG. 4 to FIG. 5 , a second trench 132 of the second fin set 130 is disposed to the second portion 114 of the heat pipe 110 to complete assembly of the heat dissipation module 100 . In the present embodiment, the second trench 132 is a through slot on the second fin set 130 , and the second fin set 130 can be positioned through the second portion 114 of the heat pipe 110 . Of course, the form of the second groove 132 is not limited to the above.

In the present embodiment, the inner contour formed by the upper groove 144 and the lower groove 148 of the third fin set 140 can be used to correct the position of the second portion 114 of the heat pipe 110, so that the precision of the first assembly bending angle is high. The third fin 140 is in the third portion 116 of the heat pipe 110 (as shown in FIG. 3), and then reassembles the second fin set 130 to the second portion 114 with a lower bending angle precision (see FIGS. 4 and 5). As shown, to avoid the heat pipe 110 having a large tolerance due to the bending angle of the bent third portion 116, a situation in which the third fin set 140 is not easily installed occurs.

FIG. 5 is a schematic diagram of a heat dissipation module. 6 is a cross-sectional view of the heat dissipation module of FIG. 5. Referring to FIG. 5 and FIG. 6 , the heat dissipation module 100 of the present embodiment includes a heat pipe 110 , a first fin set 120 , a second fin set 130 , a third fin set 140 , and a heat dissipation bottom plate 150 . The first portion 112 and the second portion 114 of the heat pipe 110 are different from the axis of the extending direction of the third portion 116, and the first portion 112 and the third portion 116 are bently connected between the second portion 114 and the third portion 116. Connected in a bend. The first portion 112 , the second portion 114 , and the third portion 116 of the heat pipe 110 are respectively disposed through the first fin set 120 , the second fin set 130 , and the third fin set 140 .

In this embodiment, the heat pipe 110 is completely covered by the second fin set 130 , the third fin set 140 , and the first fin set 120 and the heat dissipation bottom plate 150 . The first fin set 120 and the second fin set 130 are respectively in close contact with opposite sides of the third fin set 140 to make full use of space to increase heat dissipation performance.

In the conventional heat dissipation module (not shown), since the heat pipe and the fin group can be slightly slid, and the bending angles of the different portions of the different heat pipes are different, a tolerance is generated, and the heat pipe is in the It is difficult to accurately weld the fins in the bent portion. Therefore, the conventional heat dissipating module does not arrange the fins in the bent portion of the heat pipe.

Compared with the conventional heat dissipation module, the assembly method of the heat dissipation module of the present embodiment is such that after the first fin group 120 is disposed in the first portion 112 of the heat pipe 110, the precision of the bending angle is high. After the third fin set 140 is in the third portion 116 of the heat pipe 110 to correct the position of the second portion 114 of the heat pipe 110, the second fin set 130 to the second portion 114 having a lower bending angle precision are assembled. The situation in which the heat pipe 110 is difficult to mount the third fin set 140 due to the large tolerance of the bending angle of the bent third portion 116 is avoided. With the above-mentioned assembly method, the heat dissipation module 100 of the present embodiment is configured with a third fin group 140 on the heat pipe 110 in which the third region 116 (bending region) of the fin group is difficult to be disposed, in addition to making full use of space, increasing heat dissipation. In addition to increasing the heat dissipation efficiency of the area, since the air flow is characterized by a tendency to flow to a channel having a small resistance, the third fin group 140 replenishes the cavity at the center (the third portion 116) of the heat pipe 110 to balance the wind flow and prevent the air flow. Lost here.

In a specific implementation, the method for assembling the heat dissipation module of the present invention includes the following steps.

First, a first fin set 120 and a heat pipe 110 are provided, wherein the first fin set 120 is provided with a heat pipe groove (for example, the first groove 122) for accommodating the first portion 120 of the heat pipe 110, as shown in FIG.

Next, the first portion 112 of the heat pipe 110 is placed in the heat pipe slot of the first fin set 120. For ease of installation, the position of the second fin set may be replaced by a fixed fixture, the second portion 114 of the heat pipe 110 is fixed, and then the first portion 112 of the heat pipe 110 is welded to the fins of the first fin set 120 to form a plane, such as As shown in FIG. 2, the first portion 112 of the heat pipe 110 is flush with the fins of the first fin set 120, similar to a Heat-pipe Direct Touch (HDT).

Then, the second portion 114 of the heat pipe 110 is fixed by the fixture, and the upper half 142 and the lower half 146 of the third fin set 140 are combined with the third portion 116 of the heat pipe 110. The third portion 116 has a bent structure, and the upper and lower halves of the third fin set 140 are aluminum extrusions. The third portion 116 of the heat pipe and the aluminum extrusion are fixed by, for example, screws or the like, as shown in FIG.

Subsequently, a heat sink base plate 150 is pressed against the plane of the first portion 112 of the heat pipe 110, and then the second fin set 122 provided with the through grooves 132 is inserted into the second portion 114 of the heat pipe 110. The heat pipe 110, the aluminum extrudates 142 and 146, the fin sets and the heat dissipating bottom plate are integrated into one body to be thermally coupled, as shown in FIGS. 4 and 5.

In summary, the heat pipe of the heat dissipation module of the present invention has a first portion, a third portion and a second portion which are different and sequentially arranged in the extending direction axis, and the first portion and the third portion are bently connected, and The two parts are connected to the third part in a bent manner. In the heat dissipation module of the present invention, in addition to the first fin group and the second fin group disposed on the first portion and the second portion of the heat pipe at both ends, the first portion and the second portion are bent and connected The third fin set is also configured on the third part. Therefore, the heat dissipation module has a larger heat dissipation area and can provide higher heat dissipation efficiency. The present invention further provides a method for assembling a heat dissipation module, which is configured to assemble a third fin group having a high precision of bending angle in a third portion of the heat pipe after the first fin group is disposed in the first portion of the heat pipe. After correcting the position of the second portion of the heat pipe, the second fin group having a lower bending angle precision is assembled to the second portion to avoid the heat pipe having a larger tolerance due to the bending angle of the bent third portion. A situation in which it is difficult to mount the third fin group occurs.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100: heat dissipation module 110: heat pipe 112: first portion 114: second portion 116: third portion 120: first fin group 122: first trench 130: second fin group 132: second trench 140: Third fin set 142: upper half 144: upper groove 146: lower half 148: lower groove 150: heat sink bottom plate

FIG. 1 to FIG. 5 are schematic diagrams showing a method of assembling a heat dissipation module according to an embodiment of the invention. 6 is a cross-sectional view of the heat dissipation module of FIG. 5.

100: heat dissipation module 110: heat pipe 112: first part 114: second part 116: third part 120: first fin set 130: second fin set 140: third fin set 150: heat sink bottom plate

Claims (8)

A heat dissipation module includes: a heat pipe including a first portion, a second portion, and a third portion connecting the first portion and the second portion, the third portion having a bent structure; a first fin set The first portion of the heat pipe is disposed in the first fin set; a second fin set, the second portion of the heat pipe is disposed in the second fin set; a third fin set, the heat pipe The third portion of the heat pipe is surrounded by the third fin group, the heat pipe, the first fin group, the second fin group Thermally coupling with the third fin set; and a heat dissipating bottom plate disposed on the same side of the first fin set and the third fin set, and contacting the first fin set and the third fin set, And thermally coupled to the first fin set and the third fin set. The heat dissipation module of claim 1, wherein the first fin set and the second fin set are respectively in close contact with opposite sides of the third fin set. The heat dissipation module of claim 1, wherein the third fin set includes a removable upper and lower halves, the upper half and the lower half respectively including an upper recess And a recess, the upper recess and the lower recess form a space for accommodating the third portion of the heat pipe in an assembled state, so that the upper half and the lower half of the third fin set are tightly covered the third part. The heat dissipation module of claim 3, wherein the upper half and the lower half are aluminum extrusions, castings, or computer numerical control (CNC) workpieces. A method for assembling a heat dissipation module includes: configuring a first portion of a heat pipe to a first trench of a first fin set, wherein the heat pipe includes the first portion, a second portion, and connecting the first portion and the a third portion of the second portion, the third portion has a bent structure; an upper half of a third fin set is disposed to a side of the third portion of the heat pipe, and the third fin set is disposed a lower half to the other side of the third portion of the heat pipe, the upper half and the lower half forming a space tightly covering the third portion of the heat pipe in an assembled state, and fixing the lower half to the lower portion a second portion of the second fin set to the second portion of the heat pipe, wherein the third fin group covers the third portion of the heat pipe with a precision greater than the second fin The set of sheets covers the accuracy of the second portion of the heat pipe, the heat pipe, the first fin set, the second fin set and the third fin set are thermally coupled; and a heat sink bottom plate is disposed to the first fin a chip set and a side of the third fin set, wherein the heat sink bottom plate contacts the first fin set and Third fin group, and the first fin set and the third set of fins thermally coupled. The method for assembling a heat dissipation module according to claim 5, wherein the first fin group and the second fin group are respectively in close contact with opposite sides of the third fin group. The method for assembling a heat dissipation module according to claim 5, wherein the upper half and the lower half respectively comprise an upper groove and a lower groove, and the upper groove and the lower groove are formed together. The inner contour is close to the outer wheel of the third portion of the heat pipe And the upper half and the lower half of the third fin set tightly cover the third portion. The method for assembling a heat dissipation module according to claim 5, wherein the upper half and the lower half are aluminum extrusions, castings, or computer numerical control (CNC) workpieces.