CN115581034A - Heat radiation module - Google Patents

Abstract

The invention provides a heat radiation module, which comprises a heat radiation fin unit and a plurality of heat pipe groups, wherein the heat radiation fin unit comprises a plurality of fin groups which are arranged at intervals in a stacking manner, two ends of the plurality of heat pipe groups are respectively provided with a heat absorption part and a heat radiation part, each heat absorption part of each heat pipe group is respectively contacted with different heating sources, and each heat radiation part of each heat pipe group is respectively clamped between the fin groups, and the heat radiation module is characterized in that: each heat dissipation part of each heat pipe set extends horizontally from one short side of the fin set to the other short side along the long side direction, so that the heat dissipation parts can be completely distributed on the contact surface of the fin set, the maximum heat dissipation contact area is obtained, and the structural strength of the heat dissipation fin unit can be improved by means of the heat dissipation parts.

Description

Heat radiation module

Technical Field

The present invention relates to the field of heat dissipation, and more particularly, to a heat dissipation module.

Background

Please refer to fig. 1A and fig. 1B, which are perspective views of a conventional heat sink, and refer to taiwan certification number I649530, the conventional heat sink includes a first heat pipe group 91, a second heat pipe group 92, and a heat dissipation portion 93. The heat dissipation part 93 includes a first fin group 931, a second fin group 932 and a third fin group 933, and the first fin group 931 is located above the 2 nd and 3 rd fin groups 932 and 933, and the first fin group 931 includes a first support 9311 and a plurality of first fins 9312 attached to the first support 9311 so as to be in contact with each other.

The second fin group 932 includes a plurality of second supports 9321 and a plurality of second fins 9322 attached to the second supports 9321, and the top and bottom surfaces of the plurality of second fins 9322 are respectively connected to the upper and lower second supports 9321.

The third heat sink group 933 includes a third support 9331 and a plurality of third heat sinks 9332 attached to the third support 9331 so as to be in contact with each other, and the plurality of third heat sinks 9332 are located below the plurality of second heat sinks 9322 with the third support 9331 interposed therebetween.

The first fin group 931 and the third fin group 933 have an upper cutout 9314 corresponding to the first heat pipe group 91 and a lower cutout 9334 corresponding to the second heat pipe group 92, respectively, at the center of the long sides of the fins.

The first heat pipe group 91 and the second heat pipe group 92 respectively have 4 first heat pipes 911 and 4 second heat pipes 921, one end portions (i.e., evaporation portions 9111, 9211) of the first heat pipes 911 and the second heat pipes 921 are respectively connected to water- cooling heads 94A, 94B contacting heat generating bodies, the other end portions (i.e., condensation portions 9112, 9212) of the first heat pipes 11 and the second heat pipes 921 are respectively inserted into corresponding upper notch portion 9314 and lower notch portion 9334, and 2 first heat pipes 911 on the left and right sides of the first heat pipes 911 are respectively connected to the first support 9311 and are respectively bent and extended in the left and right directions, and 2 second heat pipes on the left and right sides of the second heat pipes 921 are similarly positioned below and are respectively bent and extended in the left and right directions on the second support 9331, and thus the heat generation amount of the heat generating bodies can be equalized by cooling the two different heat generating bodies. However, referring to fig. 1B, the bent portions 9113 of the left 2 first heat pipes 911 and the bent portions 9113 of the right 2 first heat pipes 11 of the conventional heat sink located in the upper cutout portion 9314 have a certain bending ratio, so that the bent portions 9113 of the plurality of first heat pipes 911 are horizontally arranged at intervals, and thus cannot be densely and horizontally arranged, and then a large gap 913 exists between the bent portions 9113 of the plurality of first heat pipes 911 and a gap 914 also exists between the bent portions 9113 of the 2 first heat pipes 11 in the same direction, and the gap 913 and the gap 914 are a waste region that is not used at all (e.g., a gray region in fig. 1B (i.e., the contact surface area of the heat dissipation sheet group is not used), that is, the plurality of first heat dissipation sheets 9312 and the first support 9311 do not completely contact the condensation portions 9112 of the plurality of first heat pipes 911, resulting in reducing the contact area between the plurality of first heat dissipation sheets 9312 and the condensation portions 9112 of the plurality of first heat pipes 911. The bent portions of the left and right 2 second heat pipes 921 in the lower cut part 9334 also have a certain bending ratio, which results in the problems that they cannot be closely arranged horizontally and the voids 913 and gaps 914 are wasted areas that are not used, which causes the plurality of third heat sinks 9332 and the third support 9331 not to contact the condensation portions 9212 of the plurality of second heat pipes 921, which results in the contact area between the plurality of third heat sinks 9332 and the plurality of second heat pipes 921 being reduced, which results in the heat sinks having many unused heat conduction areas, thereby reducing the overall heat conduction efficiency.

In addition, the curved portions of the plurality of heat pipes (i.e., the first heat pipe 911 and the second heat pipe 921) have no heat transfer effect because the areas where the heat insulating portions are located inside the upper and lower cut-out portions 9314 and 9334 are formed as the ineffective heat transfer area X (the dotted-line square area in fig. 1B), so that heat can be transferred to the first fin group 931 and the third fin group 933 to dissipate heat only by the condensing portions 9112 and 9212 of the first heat pipe 911 and the second heat pipe 921 located at both sides of the ineffective heat transfer area X, but the lengths of the condensing portions 9112 and 9212 of the first heat pipe 911 and the second heat pipe 921 only cover about one third of the lengths of the fin groups, which results in short heat transfer distance and insufficient contact heat transfer area, and thus poor heat dissipation effect.

Further, the opening sizes of the upper and lower cut- outs 9314, 9334 of the first and second heat pipe groups 931, 933 of the conventional heat sink are increased as the number of heat pipes (i.e., the first and second heat pipes 911, 921) to be mounted (e.g., 6 or more heat pipes) is increased, so that the area where the bent portions of more heat pipes are located in the upper and lower cut- outs 9314, 9334 is increased, which results in an increase in the ineffective heat transfer area, and also causes a problem of reducing the contact area between the condensation portions 9112, 9212 of the plurality of first heat pipes 911 and second heat pipes 921 and the heat sink group. In addition, since the upper and lower cut portions 9314, 9334 of the plurality of 1 st and 3 rd fin groups 931 and 933 are provided, the structural strength is not good, so that the first, second and third fin groups 931, 932 and 933 must be used as structural support members through the first, second and third supports 9311, 9321 and 9331, respectively, which not only increases the cost and the overall weight, but also increases the thermal efficiency due to the heat of each heat pipe group being indirectly transferred to each fin group for heat dissipation, which increases the thermal resistance transferred between the two heat pipe groups, thereby reducing the heat dissipation efficiency.

In addition, in order to insert the other end portions of the first and second heat pipe groups 91 and 92 into the central positions of the first fin group 931 and the third fin group 933, the upper and lower cutout portions 9314 and 9334 must be dug out at the expense of the heat radiation area at the central positions, which not only increases the manufacturing process of digging out the upper and lower cutout portions 9314 and 9334, but also reduces the overall heat radiation area. In addition, the upper and lower cut-out portions 9314, 9334 are formed in the central positions of the first heat dissipation plate group 931 and the third heat dissipation plate group 933, so that the first and second heat dissipation plate groups 91, 92 are required to be arranged in a straight line with the upper and lower portions aligned with each other, and the water cooling heads 94A and 94B connected to the evaporation portions 9111, 9211 of the first and second heat dissipation plate groups 91, 92 are required to be arranged in a straight line with the front and rear portions aligned with each other, which causes a problem that the heat sink is easily restricted by the obstruction of electronic components and cannot be assembled when being assembled in the internal space of an electronic product (such as a computer or a server).

Therefore, how to solve the problems and disadvantages of the heat sink that the cost is increased, the heat dissipation area is reduced, the overall weight is increased, and the space is limited is a direction in which the inventors of the present invention and related manufacturers engaged in the industry need to research and improve.

Disclosure of Invention

The main objective of the present invention is to provide a heat dissipation module that extends and distributes the heat dissipation portion of each heat pipe set to the fin set completely contact surface for effective heat exchange, and can also be used as a support to increase the structural strength.

Another objective of the present invention is to provide a heat dissipation module without additional supporting members, so as to achieve the purposes of reducing cost and overall weight.

To achieve the above object, the present invention provides a heat dissipation module, which includes:

a heat radiation fin unit, which comprises a plurality of fin groups stacked, each fin group is formed by mutually horizontally fastening a plurality of fins and is provided with at least one contact surface;

plural heat pipe group, its two ends have a heat absorption portion and a radiating part respectively, this heat absorption portion of this plural heat pipe group contacts different sources that generate heat respectively, and the radiating part of this plural heat pipe group is pressed from both sides respectively and is established between per two fin group, its characterized in that: each heat dissipation part of each heat pipe set horizontally extends to the other short side of the fin set from the outer side of the fin set through one short side along the long side direction, so that the heat dissipation parts are completely distributed on the contact surface of the fin set.

The heat dissipation module, wherein: the heat pipe sets are provided with a heat transfer bending part, the heat transfer bending parts of the heat pipe sets are respectively positioned between the heat absorption part and the heat dissipation part and are connected with each other, and the heat pipe sets correspond to the short sides of the same side or different sides of the fin sets.

The heat dissipation module, wherein: a heat dissipation flow channel is arranged between every two adjacent fins of each fin group, and the heat dissipation flow channel of each fin group is perpendicular to each heat pipe group.

The heat dissipation module, wherein: each fin of each fin group is provided with an upper folded edge and a lower folded edge, and the upper folded edge and the lower folded edge of the plurality of fins of each fin group are horizontally buckled with each other to form a top contact surface and a bottom contact surface respectively.

The heat dissipation module, wherein: a base is arranged between the heat absorption part and the heating source of each heat pipe set, the base is provided with a plurality of combination parts, the combination parts are connected with the heat absorption parts of the corresponding heat pipe sets, and the heat absorption parts of the heat pipe sets are directly or indirectly contacted with different heating sources.

The heat dissipation parts of the heat pipe sets horizontally extend from one short side of the fin set to the other short side of the fin set along the long side direction, so that the heat dissipation parts are completely distributed on the contact surface of the fin set to obtain the maximum contact area, and the structural strength of the heat dissipation fin units can be improved by means of the heat dissipation parts. And because the invention omits the metal (such as iron) supporting piece which must be additionally arranged on each layer of the fin group, the invention can effectively achieve the purposes of saving cost and reducing weight compared with the prior art.

Drawings

Fig. 1A is a perspective view of a conventional heat sink;

FIG. 1B is a schematic top view of a conventional heat sink with some heat dissipating fins omitted;

FIG. 2A is an exploded view of a heat dissipation module according to the present invention;

fig. 2B is a schematic perspective view of the heat dissipation module of the present invention.

Description of reference numerals: a heat radiation fin unit 1; a bottom fin group 11a; the middle layer fin group 11b; a top fin group 11c; the front long side 12a; a rear long side 12b; left short side 13a; right short side 13b; a fin 12; a top contact surface 121; a bottom contact surface 122; a heat dissipation flow channel 123; an upper hem 124; a lower hem 125; a snap-fit portion 126; a lower heat pipe group 2; a heat pipe 21; a heat absorbing part 211; a heat dissipation portion 212; a heat transfer bend 213; an upper heat pipe group 3; a heat pipe 31; a heat absorbing portion 311; a heat dissipating portion 312; a heat transfer bend 313; a base 4; a bonding portion 41; a first heat pipe group 91; a first heat pipe 911; an evaporation portion 9111; a condensing portion 9112; a curved portion 9113; a void 913; the gap 914; a second heat pipe group 92; the second heat pipe 921; an evaporation portion 9211; a condensation portion 9212; a heat dissipating portion 93; a first fin group 931; a first support 9311; a first heat sink 9312; upper cutout portion 9314; a second fin group 932; a second support 9321; a second fin 9322; a third fin group 933; a third support 9331; a third heat sink 9332; a lower cutout part 9334; water cooling heads 94A, 94B; the ineffective heat transfer area X.

Detailed Description

The above objects, together with the structural and functional features thereof, are accomplished by the preferred embodiments according to the accompanying drawings.

Referring to fig. 2A and fig. 2B, an exploded schematic view, a perspective schematic view and a perspective side view of the heat dissipation module of the present invention are shown, the heat dissipation module of the present invention includes a heat dissipation fin unit 1 and a plurality of heat pipe sets, which will be described in detail below.

The heat sink fin unit 1 includes a plurality of fin groups stacked at intervals, in this embodiment, the plurality of fin groups are explained as three fin groups, and for convenience of description, the fin groups are divided into a bottom-layer fin group 11a, a middle-layer fin group 11b, and a top-layer fin group 11c, which are respectively provided with heat pipes stacked at intervals for explanation.

Each fin set (i.e. the bottom, middle and top fin sets 11a, 11b and 11 c) is formed by fastening a plurality of fins 12, and a heat dissipation channel 123 is formed between two adjacent fins 12 of each fin set. In the figure, each fin 12 of the bottom, middle and top fin groups 11a, 11b and 11c has an upper flap 124 and a lower flap 125 protruding to align with the upper flap 124 and the lower flap 125 of the other adjacent fin, and the upper flap 124 and the lower flap 125 of each fin 12 of each fin group are respectively provided with a fastening portion 126, and the fastening portion 126 is shown in the figure as a concave-convex matching structure, but is not limited thereto, and includes any combination of technical means.

Each fin 12 of each fin group is combined with the buckling part 126 of the adjacent fin in a horizontal buckling (buckling or lapping) manner by the respective buckling part 126 to form a buckling type fin (fin) group. Thus, the upper flanges 124 of each fin group together form a top contact surface 121 of a heat transfer (contact) area of each fin group, and the lower flanges 125 of each fin group together form a bottom contact surface 122 of a heat transfer (contact) area of each fin group. And two opposite long sides (i.e., the front long side 12a and the rear long side 12 b) and two opposite short sides (i.e., the left short side 13a and the right short side 13 b) connecting the two long sides are connected between the top contact surface 121 and the bottom contact surface 122 of each fin group.

Referring to fig. 2A, the plural heat pipe sets in the present embodiment represent two heat pipe sets, and the heat pipe sets are divided into the lower heat pipe set 2 and the upper heat pipe set 3 for convenience of description, but the number of the heat pipe sets in practical implementation of the present invention is not limited to the above number.

The lower heat pipe set 2 and the upper heat pipe set 3 each have a plurality of heat pipes 21, 31 arranged in parallel with each other, each of the heat pipes 21, 31 has a heat absorbing portion 211, 311, a heat dissipating portion 212, 312 and a heat transfer bent portion 213, 313, the heat absorbing portion 211, 311 of each of the heat pipes (i.e., the upper heat pipe 21 and the lower heat pipe 31) of each of the layers respectively contact different heat sources (not shown) indirectly or directly, and the heat transfer bent portion 213, 313 of each of the heat pipes 21, 31 of each of the layers is respectively located between the heat absorbing portion 211, 311 and the heat dissipating portion 212, 312 of each of the heat pipes 21, 31 and connected to each other. The heat transfer bending portions 213 and 313 of the heat pipes 21 and 31 on the lower and upper layers are located at the short sides corresponding to the same side or different sides of the plurality of fin groups, that is, the heat transfer bending portions 213 of the heat pipes 21 on the lower and upper layers can be selected to be located at the same side direction or different sides corresponding to the left short side 13a of the bottom fin group 11a and the right short side 13b of the top fin group 11 c.

With reference to fig. 2A and 2B, the heat dissipating portions 212 and 312 of the heat pipes 21 and 31 of each layer are respectively sandwiched between every two fin sets, the heat dissipating portion 212 of the heat pipe 21 of the lower layer is sandwiched between the bottom layer fin set 11a and the middle layer fin set 11B, and the heat dissipating portion 312 of the heat pipe 31 of the upper layer is sandwiched between the top layer fin set 11c and the middle layer fin set 11B. In detail, the heat dissipation portions 212 of the plurality of heat pipes 21 on the lower layer are horizontally extended from the outer side of the bottom fin group 11a to the right short side 13b of the bottom fin group 11a through the left short side 13a along the long side direction, the heat dissipation portions 312 of the plurality of heat pipes 31 on the upper layer are extended from the outer side of the middle fin group 11b to the left short side 13a of the middle fin group 11b through the right short side 13b along the long side horizontal direction, and the heat dissipation portions 212 of the plurality of heat pipes 21 on the lower layer in parallel are respectively vertically arranged with the heat dissipation flow channels 123 of each fin group. With such an arrangement, the heat dissipation portions 212 and 312 of the plurality of heat pipes 21 and 31 of the lower layer and the upper layer are closely attached to each other, juxtaposed, and fully (completely) laid on the top contact surface 121 and/or the bottom contact surface 122 of the fin group contacting the entire corresponding layer, so as to obtain a complete contact area, and the structural strength of the plurality of fin groups (i.e., the bottom layer, the middle layer, and the top layer fin groups 11a, 11b, and 11 c) is increased by the heat pipe groups.

Referring to fig. 2B, in order to fix the heat absorbing parts 211, 311 of the lower and upper heat pipe sets 2, 3 to contact with two heat generating sources, a base 4 is disposed between the heat absorbing parts 211, 311 of the plurality of heat pipes 21, 31 and the different heat generating sources respectively.

The base 4 has an upper side, a lower side and a plurality of combining portions 41 disposed on the upper side or the lower side of the base or between the upper side and the lower side, in this embodiment, the plurality of combining portions are recessed grooves on the lower side of the base 4 and respectively connected to the corresponding heat absorbing portions 211, 311, so that the heat absorbing portions 211, 311 of the plurality of heat pipes 21, 31 on the upper layer and the lower layer are respectively in direct contact with two different heat sources.

The heat pipes 21, 31 of the lower and upper layers have the heat-transferring bent portions 213, 313 located on the short sides (i.e., the left and right short sides 13a, 13 b) corresponding to different sides of the bottom and top fin groups 11a, 11c, respectively, but are not limited thereto. In other embodiments, the heat pipes 21, 31 of the lower and upper layers have their heat transfer bends 213, 313 located on the same side corresponding to the short sides (e.g., the right short side 13b or the left short side 13 a) of the bottom and top fin groups 11a, 11c, respectively.

The heat dissipation parts 212 and 312 of each heat pipe set (namely, the lower layer heat pipe set 2 and the upper layer heat pipe set 3) are completely and completely contacted with the bottom contact surface 122 and/or the top contact surface 121 of each corresponding fin set (namely, the bottom layer fin set, the middle layer fin set and the top layer fin set 11a, 11b and 11 c), so that heat can be completely conducted, and meanwhile, the heat dissipation parts 212 and 312 of each heat pipe set are closely attached to each other and are arranged in parallel to form a supporting structure contacting the corresponding fin set, so that the effect of structural strength of the heat dissipation fin unit is effectively improved. In addition, the fin groups of the invention omit the metal (such as iron) supporting piece of the traditional (existing) fixed fin, so that the effects of reducing the cost and the overall weight can be effectively achieved, and the problem of increased thermal resistance between the existing heat pipe groups and the heat radiating fin groups can be solved.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (5)

1. A heat dissipation module, comprising:

a heat radiation fin unit, which comprises a plurality of fin groups stacked, each fin group is formed by mutually horizontally fastening a plurality of fins and is provided with at least one contact surface;

plural heat pipe group, its two ends have a heat absorption portion and a radiating part respectively, this heat absorption portion of this plural heat pipe group contacts different sources of generating heat respectively, and the radiating part of this plural heat pipe group is clamped respectively between per two fin groups, its characterized in that: each heat dissipation part of each heat pipe set horizontally extends to the other short side of the fin set from the outer side of the fin set through one short side along the long side direction, so that the heat dissipation parts are completely distributed on the contact surface of the fin set.

2. The heat dissipation module of claim 1, wherein: the heat pipe sets are provided with a heat transfer bending part, the heat transfer bending parts of the heat pipe sets are respectively positioned between the heat absorption part and the heat dissipation part and are connected with each other, and the heat pipe sets correspond to the short sides of the same side or different sides of the fin sets.

3. The heat dissipation module of claim 1, wherein: a heat dissipation flow channel is arranged between every two adjacent fins of each fin group, and the heat dissipation flow channel of each fin group is perpendicular to each heat pipe group.

4. The heat dissipation module of claim 1, wherein: each fin of each fin group is provided with an upper folded edge and a lower folded edge, and the upper folded edge and the lower folded edge of the plurality of fins of each fin group are horizontally buckled with each other to form a top contact surface and a bottom contact surface respectively.

5. The heat dissipation module of claim 1, wherein: a base is arranged between the heat absorption part and the heating source of each heat pipe set, the base is provided with a plurality of combination parts, the combination parts are connected with the heat absorption parts of the corresponding heat pipe sets, and the heat absorption parts of the heat pipe sets are directly or indirectly contacted with different heating sources.

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