CN114322616A - Radiator assembly with heat pipe - Google Patents

Abstract

The present invention provides a radiator assembly with heat pipes, comprising: at least one aluminum fin group and at least one copper heat pipe of different materials, the aluminum fin group includes at least one part to be combined (such as through holes and / or channel) is provided with a copper insert layer for contact and bonding with the copper heat pipe, thereby promoting the combination of aluminum fin groups of different materials and the copper heat pipe and improving the surface of the aluminum fin group Eutectic grain problem and environmental pollution caused by electroless nickel plating.

Description

Radiator assembly with heat pipe

technical field

The present invention relates to radiators, in particular to a radiator assembly with a heat pipe, which is provided with a copper embedded layer at the to-be-bonded part of the aluminum radiator to be combined with the copper heat pipe.

Background technique

Heat sinks or fins are usually used to dissipate the heat generated in the heating element or system to the outside air by heat exchange; and in the case of low thermal resistance, it shows that the heat sink has higher heat dissipation efficiency. Generally speaking, the thermal resistance consists of the diffusion thermal resistance inside the heat sink and the convection thermal resistance between the surface of the heat sink and the atmosphere. At present, a more efficient heat dissipation mechanism uses a combination of heat pipes with high thermal conductivity and fins of the heat sink to effectively solve the heat dissipation problem.

Generally, a heat dissipation module with a heat pipe includes at least one heat pipe and a plurality of fin groups arranged at intervals, and a flow channel is often arranged between adjacent fins. Each fin is provided with a through hole, an upper folded edge and a lower folded edge which are aligned with each other. The upper folded edge and the lower folded edge are respectively provided with at least one buckling portion, and each fin is buckled with the buckling portion of the adjacent fins through the buckling portion to form a finned heat sink or heat dissipation fin The upper folded edges of the fins together form a top side of the radiator, and the lower folded edges together form a bottom side of the radiator.

Furthermore, the peripheral edge of the fin through-hole protrudes from one side to the other side to form a through-hole flange. When the through-hole is penetrated by one end of the heat pipe, the through-hole flange surrounds the outer surface of one end of the heat pipe. ; The other end of the heat pipe is extended to the bottom side of the radiator or the heat dissipation fin group or matched with a base.

Generally speaking, the combination of the through holes of the fins and one end of the heat pipe is usually a tight-fit combination or a loose-fit combination. The tight-fit combination, for example, the inner diameter of the through-hole flange is slightly smaller than the heat pipe. The outer diameter of one end causes the two to produce an interference bond. In addition, the fin is heated by means of thermal expansion and cold contraction, so that the inner diameter of the through-hole flange is slightly larger than the outer diameter of one end of the heat pipe, and then after the heat pipe is inserted into the through hole, the fin is cooled to make the through-hole flange The inner diameter of the flange Retracted to original size to fit snugly into the heat pipe.

In addition, in a conventional loose-fit bonding method, for example, the inner diameter of the through-hole flange is slightly larger than the outer diameter of one end of the heat pipe, and a medium (such as thermal conductive glue or solder paste or tin strips to fill the gap) is provided between the through hole of the fin and the heat pipe. One of the ways of setting the medium is to set the medium on the inner edge of the through hole and the outer surface of one end of the heat pipe; the other way is to open a packing hole at the edge of the through hole, and set the medium on the packing inside the hole. During processing, heating makes the medium melt and spread evenly between the outer surface of the heat conduction pipe and the inner edge of the through hole to fill the gap.

In addition, the tight-fitting combination method also uses a bunching device to press on the through-hole flange to form a corrugated structure, and the corrugated structure has a plurality of continuous concave parts and convex parts arranged alternately around the radial direction of the through-hole flange, and The protruding portion and the concave portion are tightly bound to the outer surface of one end of the heat pipe, and are radially squeezed toward the heat pipe to deform the outer surface of the heat pipe, thereby interfering with the outer surface of the heat pipe, so that the through-hole flange and the The heat pipes are tightly bound together.

In addition, the industry further considers the overall weight and cost of the overall radiator. In order to meet the requirements of lighter weight and lower cost, usually the fins, radiators or bases are made of light-weight and low-cost aluminum materials, and the heat pipes use Made of high thermal conductivity metals (such as brass or aluminum, nickel, stainless steel, etc.).

Although the use of aluminum material instead of copper material can improve the weight of copper and the high cost of materials, other problems arise, such as the aluminum surface is easily oxidized, and high melting point oxides are generated during the welding process, making it difficult for the weld metal. Complete fusion brings difficulties to welding. If copper and aluminum are directly welded, the parts where the two materials are directly butted are prone to cracks after welding due to their large brittleness, and when copper and aluminum are welded, close to the copper material. CuAl2 and other eutectic structures are easily formed in the weld on this side, while CuAl2 and other eutectic structures are only distributed near the grain boundaries of the material, which are prone to fatigue or cracks between grain boundaries. And the eutectic temperature is very different. In the fusion welding operation, when the aluminum is melted, the copper remains in a solid state. When the copper is melted, the aluminum has melted a lot and cannot coexist in a eutectic or eutectic state, which increases the difficulty of welding. In addition, due to the good thermal conductivity of copper and aluminum, the molten pool metal crystallizes quickly during welding, the metallurgical reaction gas at high temperature does not have time to escape, and the weld is prone to pores, so copper and aluminum cannot be directly welded. After the surface of the aluminum material is surface-modified, it can be used for subsequent welding operations with copper or other materials.

In particular, in order to improve the above-mentioned defect of using aluminum material instead of copper material, which cannot be directly welded with copper or other dissimilar materials, electroless nickel plating (ie electroless nickel plating) is used as a technical method for surface modification. Generally speaking, there are three types of electroless nickel plating (ie, electroless nickel plating): low phosphorus, medium phosphorus, and high phosphorus. The biggest difference between them and electroplating is that the working environment is under the condition of no current, and the reducing agent in the solution is used. Metal ions are reduced, and the surface of the test piece must be catalyzed before electroless nickel plating. Electroless nickel plating solution can be divided into the following three types: (1) Activation sensitization + acid plating bath pH value between 4 and 6 belongs to acid plating solution, which is characterized by less loss of components caused by evaporation, although The operating temperature is high, but the plating solution is safe and easy to control, with high phosphorus content and high plating rate, and is often used in the industry. (2) Activation sensitization + alkaline plating solution The pH value of the alkaline plating bath is between 8 and 10. Because the ammonia water that adjusts the pH value is easy to volatilize, it is necessary to supplement the ammonia water in time to maintain the stability of the pH value during operation. The amount is less, the plating solution is less stable, and the operating temperature is lower. (3) HPM+Alkaline plating bath HPM is to immerse the silicon wafer in a mixed solution of DI-water:H ₂ O ₂ (aq):HCl(aq)=4:1:1 and utilize the oxide layer formed on the surface of the silicon wafer to Substitution sensitized activation to form an autocatalytic surface on the surface.

However, a large amount of chemical reaction liquid needs to be used in the process of electroless nickel plating (ie electroless nickel plating), and a large amount of industrial waste liquid containing heavy metals or chemical substances will be generated after the electroless nickel plating process, and the industrial waste liquid will produce A large amount of waste water containing toxic substances such as yellow phosphorus cannot be recycled. Moreover, yellow phosphorus with a concentration of 50-390 mg/L in yellow phosphorus sewage is a highly toxic substance, which is extremely harmful to the liver and other organs when it enters the human body. Long-term drinking of phosphorus-containing water can cause osteoporosis and other diseases such as mandibular necrosis. Therefore, countries have begun to ban this process and promote non-toxic processes to protect the environment.

Therefore, how to provide a method that can reduce the overall weight of the combined structure of the heat dissipation module and replace the electroless nickel plating as a surface modification method that improves the inability of aluminum materials to be welded with other dissimilar materials, and is beneficial to welding operations without additional environmental pollutants. , is the primary goal at this stage.

Therefore, how to solve the above-mentioned problems and deficiencies is the direction that the inventor of this case and the relevant manufacturers engaged in this industry urgently want to study and improve.

SUMMARY OF THE INVENTION

In order to improve the above-mentioned problems, an object of the present invention is to provide a method for disposing a copper intercalation layer at at least one of the parts to be joined in the aluminum fin group between components composed of different copper and aluminum materials. It can be combined with the copper heat pipe, so that different components composed of different materials of copper and aluminum can be directly welded. The aluminum fin group can be welded and combined with the copper heat pipe without electroless nickel plating process, and no toxic substances will be produced. The effect of environmental protection is achieved, and the existing problem of eutectic formation is improved.

It is an object of the present invention to provide a method to form a copper intercalation layer on the part to be combined of the aluminum fin set with either or both of the copper heat pipe or the base, so that the aluminum fin set can be A heat sink assembly with a heat pipe that can be welded to a copper heat pipe or a copper base without the need for an electroless nickel plating process, thereby reducing the overall weight of the structure, reducing the thermal resistance of the joint and improving the heat conduction efficiency.

In order to achieve the above object, the present invention provides a radiator assembly with a heat pipe, comprising: at least one aluminum fin group, which is composed of a plurality of aluminum fins in a buckled combination and has a bottom surface and a top surface, and There is a flow channel between two adjacent aluminum fins, the bottom surface is provided with at least one channel, the channel has a channel opening and an inner side surface of the channel, and each aluminum fin is provided with at least one through-hole. The through-hole has a through-hole flange protruding from one side of the aluminum fin, and the inner side of the channel serves as a part to be combined with the aluminum fin group and the heat pipe. The copper embedded layer, and the deep surface of the embedded layer is combined with the inner side of the channel and penetrates under the inner side of the channel; at least one copper heat pipe has a first end and a second end respectively penetrating the aluminum The through-hole and the channel of the fin group, and the first end is tightly fitted with each of the through-hole flanges, and the second end is in contact with the contact surface of the copper embedded layer on the inner side of the channel.

The second end of the aforesaid at least one copper heat pipe has a heat pipe exposed surface exposed from the opening of the channel, and a heat pipe contact surface is in contact with the contact surface of the copper embedded layer inside the channel and is bonded by welding.

The aforementioned through-hole flange ring is provided with a corrugated or spine-like structure tightly bound to the outer surface of the first end.

The bottom surface of the aforementioned fin set is used as another part to be combined with the fin set with the copper embedded layer.

The present invention further provides a heat sink assembly with a heat pipe, comprising: at least one set of aluminum fins, with a bottom surface and a top surface, a flow channel between two adjacent aluminum fins, and the bottom surface is provided with a bottom surface and a top surface. At least one channel, the channel has a channel opening and an inner side surface of the channel, and each fin is provided with at least one through hole penetrating the aluminum fin, the through hole has a through hole flange from the aluminum fin One side protrudes and defines an inner side of a flange, the inner side of the channel and the inner side of the flange are respectively used as a part of the aluminum fin group to be combined with a copper insert layer, the copper insert The layer has a deep surface and a contact surface, and the deep surface is respectively combined with the inner side of the channel and the inner side of the flange and penetrates into the inner side of the channel and the inner side of the flange; at least one copper heat pipe has a first The end and a second end respectively pass through the through hole and the channel of the aluminum fin group, and the first end is loosely combined with the through hole flange and is connected with the copper embedded layer on the inner side of the flange. The contact surface is in contact with the contact surface by welding, and the second end and the contact surface of the copper embedded layer on the inner side of the channel are also connected by welding.

The second end of the at least one heat pipe has an exposed surface of the heat pipe exposed from the opening of the channel, and a contact surface of the heat pipe is in contact with the contact surface of the copper embedded layer on the inner side of the channel.

The bottom surface of the aforementioned fin set is used as another part to be combined with the fin set with the copper embedded layer.

In conclusion, the present invention provides a heat sink assembly with heat pipes, comprising: at least one aluminum fin group and at least one copper heat pipe made of different materials, the aluminum fin group including at least one part to be combined (for example, transparent hole and/or channel) is provided with a copper insert layer for contacting and bonding with the copper heat pipe, thereby promoting the combination of aluminum fin sets of different materials and the copper heat pipe and improving the aluminum fin set The problem of surface eutectic grains and environmental pollution caused by electroless nickel plating.

Description of drawings

1A and FIG. 1B are three-dimensional exploded and assembled schematic diagrams of the present invention;

1C is a schematic diagram of another perspective view of the three-dimensional combination of the present invention;

1D is a schematic diagram of an inverted fin provided on the outermost side of the aluminum fin group of the present invention;

2A is a schematic cross-sectional view of an aluminum fin group of the present invention;

2B is a schematic cross-sectional view of the combination of an aluminum fin group and a copper heat pipe according to the present invention;

Fig. 3 is the implementation schematic diagram of the tight fitting of aluminum fins and copper heat pipes of the present invention;

FIG. 4A and FIG. 4B are schematic diagrams before and after the aluminum fin set of the present invention is provided with a copper intercalation layer;

FIG. 5 is a schematic diagram of the bottom surface of the present invention being joined to a thermally conductive element;

6 is a schematic diagram of another alternative implementation of the present invention;

7A to FIG. 7C are schematic diagrams showing the loose combination of through holes and copper heat pipes of the aluminum fin group of the present invention;

FIG. 8 is a schematic diagram of another alternative implementation of the copper heat pipe of the present invention.

Reference numeral description: radiator structure 10; aluminum fin group 11; aluminum fin 111; upper folded edge 1111; lower folded edge 1112; ; corrugated structure 1142; flange inner side 1143; channel 115, 115a; channel opening 1151; channel inner side 1152, 1152a; top surface 116; flow channel 117; copper heat pipe 121; end 1212, 1212a; heat pipe exposed surfaces 12121, 12121a; heat pipe contact surfaces 12122, 12122a; U-shaped part 1213;

Detailed ways

The above objects of the present invention and their structural and functional characteristics will be described with reference to the preferred embodiments of the accompanying drawings.

Please refer to FIG. 1A is a schematic exploded perspective view of the present invention; FIG. 1B is a schematic view of a three-dimensional assembly of the present invention; FIG. 1C is a schematic view of another perspective view of the three-dimensional assembly of the present invention; Schematic diagram of the outer fins; FIG. 2A is a schematic cross-sectional view of the aluminum fin group of the present invention; FIG. 2B is a cross-sectional schematic diagram of the combination of the aluminum fin group and the copper heat pipe of the present invention. As shown in the figure, a heat sink structure 10 includes an aluminum fin set 11 and at least one copper heat pipe 121 . The aluminum fin set 11 has a bottom surface 113 and a top surface 116 , and the bottom surface 113 defines at least one groove. The channel 115, in this embodiment, represents two channels 115, the channel 115 has a channel opening 1151 cut into the bottom surface 113, and a channel inner side surface 1152 is concave in the direction opposite to the bottom surface 113, and the bottom surface 113 And the inner side surface 1152 of the channel is respectively used as a part to be combined with the fin set 11 and other copper parts (details will be described later).

In detail, the aluminum fin group 11 is composed of a plurality of aluminum or aluminum alloy fins 111 that are connected horizontally or vertically, and there is a flow channel 117 between two adjacent aluminum fins 111. In this figure, each aluminum fin 111 has an upper folded edge 1111 and a lower folded edge 1112 protruding to align with the upper folded edge 1111 and the lower folded edge 1112 of another adjacent aluminum fin 111 , and the upper folded edge 1111 and the lower folded edge 1112 The folded edge 1111 and the lower folded edge 1112 are respectively provided with at least one buckling portion 11111, 11121. Although the buckling portion 11111, 11121 shows a concave-convex matching structure in the figure, it is not limited to this, and also includes currently known technical means . Each aluminum fin 111 is horizontally fastened to the fastening parts 11111 and 11121 of the adjacent aluminum fins 111 through the fastening parts 11111 and 11121 to form a heat sink structure of a fastened fin.

In this way, the upper folded edges 1111 together constitute the top surface 116 of the aluminum fin set 11 , and the lower folded edges 1112 together constitute the bottom surface 113 of the fin sets 11 . Furthermore, the lower edge 1112 of each aluminum fin 111 is provided with at least one groove. After the aluminum fins 111 are fastened, the grooves are aligned with each other to form the bottom surface 113 of the channel 115. Each of the aforementioned aluminum fins 111 is provided with at least one through hole 114 penetrating through, the through holes 114 are aligned with each other, the through hole 114 has a through hole flange 1141 surrounding an edge of the through hole 114 and One side of the aluminum fin 111 protrudes (in the figure, a front side of the fin 111 is shown) and defines a flange inner side 1143 . In addition, it is not limited to this, and the aluminum fin group 11 can also be arranged in a vertical snap connection. Furthermore, an inverted aluminum fin 111 is disposed on the outermost side of the aluminum fin group 11 to prevent the upper folded edge 1111 and the lower folded edge 1112 from scratching other parts (as shown in FIG. 1D ).

The copper heat pipes 121 (two heat pipes 121 are shown in this figure) are, for example, U-shaped heat pipes, wherein the copper includes copper and copper alloys. In detail, the copper heat pipe 121 (for example, a circular, D-shaped, or flat heat pipe) has a first end 1211 and a second end 1212, and the first end 1211 penetrates through the through hole 114 and the through hole 1211. The hole flange 114 is tightly fitted (for example, the inner diameter of the inner side surface 1143 of the flange 1143 of the through hole flange 1141 is slightly smaller than the outer diameter of the first end 1211 of the copper heat pipe 121 , resulting in interference bonding between the two, or the use of thermal expansion and cold contraction means to The aluminum fin 111 is heated to enlarge the inner diameter of the through-hole flange 1141 , and then the copper heat pipe 121 is inserted into the through-hole 114 , and the aluminum fin 111 is cooled to shrink the inner diameter of the through-hole flange 1141 to the original. The size is closely matched with the copper heat pipe 121 ), the second end 1212 extends to the bottom surface 113 of the fin group 11 and penetrates the channel 115 . The second end 1212 has a heat pipe exposed surface 12121 corresponding to the opening 1151 of the channel, and a heat pipe contact surface 12122 facing the inner side surface 1152 of the channel.

The present invention chooses to provide a U-shaped portion 1213 between the first end 1211 and the second end 1212 , and the U-shaped portion 1213 extends from the first section 1211 to the second end 1212 . The first end 1211 of the copper heat pipe 121 is used as the condensation end, the second end 1212 is used as the evaporation end, and the copper heat pipe 121 is provided with at least one capillary structure and a working liquid, and the at least one capillary structure is, for example, The capillary structure extends from the first end 1211 to the second end 1212 by any one or a combination of grooves, powder sintered bodies, mesh bodies, fibrous bodies, and corrugated plates.

Furthermore, although the figure shows that the cross section of the first end 1211 of the copper heat pipe 121 is circular, the cross section of the second end 1212 is D-shaped or flat, that is, the exposed side 12121 of the second end 1212 is a A plane (for example, the plane is realized by means of jig flattening or milling with a milling cutter), and is aligned with the bottom surface 113 of the aluminum fin group 11 . But not limited to this, in other alternative implementations, the cross-sections of the first end 1211 and the second end 1212 are both circular or flat.

As shown in FIG. 3 , in another alternative implementation, the through-hole flange 1141 of each aluminum fin 111 is annularly provided with a corrugated (or spine-like) structure 1142 tightly bound to the first end 1211 of the copper heat pipe 121 . The outer surface forms an interference bond. Specifically, after the first end 1211 of the copper heat pipe 121 is inserted into the through hole 114, a bunching device is used to press the through hole flange 1141 to form the corrugated (or spine-like) structure 1142. The corrugated (or spine-like) structure 1142 has a plurality of continuous concave portions and convex portions staggered around the radial direction of the through-hole flange 1141 , and is radially squeezed toward the copper heat pipe 121 to make the copper heat pipe 121 . The outer surface is deformed, and then interferes with the outer surface of the copper heat pipe 121, so that the aluminum fins 111 are fixed on the first end 1211 of the copper heat pipe 121 to prevent the copper heat pipe 121 from pulling away from the copper heat pipe 121. Through hole 114 .

Please continue to refer to FIG. 4A and FIG. 4B , which are schematic diagrams of the fin group of the present invention before and after the copper intercalation layer is provided. As shown in the figures, referring back to FIGS. 1A-1B and FIGS. 2A-2B, the inner side surface 1152 of the channel and the bottom surface 113 of the aluminum fin group 11 are respectively used as a part to be combined with a copper insert. A copper embedding layer 14, the copper embedding layer 14 has a deepening surface 141 and a connecting surface 142 respectively disposed on opposite sides of the copper embedding layer 14, the deepening surface 141 bond (eg, snap or embed or embed or deposit) the inner side surface 1152 of the channel and the bottom surface 113 , and the contact surface 142 is used as the exposed surface of the copper intercalation layer 14 to contact and bond with other components. In some feasible implementations, the copper intercalation layer 14 is made of copper sheet or copper foil or copper powder or liquid copper through mechanical processing (such as air pressure, hydraulic pressure, stamping or oil pressure extrusion or beating) or surface treatment process ( Spraying, electroplating or printing) or chemical processing (such as electroplating, anodizing) are combined on the inner side surface 1152 of the channel and the bottom surface 113, and part of the copper intercalation layer 14 is directly engaged or embedded or buried during the bonding process. into or deposited on the inner side surface 1152 and the bottom surface 113 of the channel to deeply form the deep surface 141 .

In this way, the copper intercalation layer 14 is not only bonded to the inner side surface 1152 and the bottom surface 113 of the channel, but also the deep surface 141 penetrates into the inner side surface 1152 and the bottom surface 113 of the channel by engaging or embedding or embedding or depositing. As the foundation of the copper embedded layer 14, the bonding force (strength) of the copper embedded layer 14 with the inner side surface 1152 of the channel and the bottom surface 113 can be enhanced, and the copper embedded layer 14 can be prevented from entering the The inner side surface 1152 of the channel and the bottom surface 113 are peeled off.

With the above arrangement, the channel 15 of the aluminum fin group 11 is in contact with the heat pipe contact surface 12122 of the second end 1212 of the copper heat pipe 121 through the contact surface 142 of the copper insertion layer 14 on the inner side surface 1152 of the channel. Contact bonding (for example, solder is provided between the contact surface 142 of the copper intercalation layer 14 and the heat pipe contact surface 12122 of the copper heat pipe 121 and then welded together, or ultrasonic welding or laser welding), thereby making The aluminum fin group 11 can be welded and combined with the copper heat pipes 121 of different materials without going through an electroless nickel plating process.

Please continue to refer to FIG. 5 , which is a three-dimensional schematic diagram of the bottom surface of the present invention being joined to a bottom plate. As shown in the figure, the bottom surface 113 of the aluminum fin group 11 of the present invention is combined with a copper heat conduction base 15 (such as a solid bottom plate or a vapor chamber with a working liquid in the hollow), wherein the copper includes copper or copper alloys. In this way, the bottom surface 113 is combined with the copper heat conduction base 15 via the contact surface 142 of the copper insertion layer 14 (eg, welded), and the heat pipe exposed surface 12121 of the second end 1212 of the copper heat pipe 121 is also connected with The copper heat conduction base 15 is combined (eg, welded), so that the aluminum fin sets 11 of different materials can be welded to the copper heat conduction base 15 without going through an electroless nickel plating process. Furthermore, the heat sink structure 10 does not produce toxic substances during the manufacturing process, thus achieving the effect of environmental protection and improving the existing problem of eutectic formation.

Please continue to refer to FIG. 6 for a schematic diagram of another alternative implementation of the present invention. Although the copper intercalation layer 14 is described above as being combined with the inner side surface 1152 and the bottom surface 113 of the channel, it is not limited to this. A single channel 115a is formed at the approximate center of the bottom surface 113 of the aluminum fin group 11 in other implementations. An inner side surface 1152a of a channel is arranged straight, and the copper intercalation layer 14 is bonded to the inner side surface 1152a of the channel. The second ends 1212a of the plurality of copper heat pipes 121 (three are shown in this embodiment) pass through the channel 115a and are arranged side by side. Furthermore, the cross section of the second end 1212a is rectangular, so that the heat pipe contact surfaces 12122a of the second ends 1212a of the copper heat pipes 121 form a coplanar to match the inner side surface 1152a of the channel, and the copper intercalation layer is formed. The contact surface 142 of 14 is contact bonded (eg, welded, or ultrasonic or laser welded). Furthermore, the exposed surface 12121a of the heat pipe at the second end 1212a of the copper heat pipes 121 forms a coplanar contact with the upper surface of a heating element 16 (such as a central processing unit or a microprocessor, etc.).

Please continue to refer to FIG. 7A to FIG. 7C , which are schematic diagrams of loose-fit combination of the through hole of the aluminum fin group and the copper heat pipe according to the present invention. Although it is shown above that the first end 1211 of the copper heat pipe 121 is tightly coupled with the through-hole flange 1141, it is not limited to this. In another alternative implementation, the first end 121 of the copper heat pipe 121 penetrates through the through hole 114 and is loosely coupled to the through hole flange 1141 (that is, the inner diameter of the inner flange surface 1143 of the through hole flange 1141 is slightly larger than that of the copper heat pipe) The outer diameter of the first end 1211 of 121), and the inner side surface 1143 of the flange is used as another part to be combined with the fin group 11, and the copper embedding layer 14 is not only arranged in the channel. The side surface 1152 and the bottom surface 113 are also arranged on the inner side surface 1143 of the flange, and the deepening surface 141 is further bonded to the inner side surface 1143 of the flange by engaging or embedding or embedding or depositing as the copper base. The foundation of the embedded layer 14 is deeply integrated into the inner side surface 1143 of the flange through the deep surface 141 to strengthen the bonding force between the copper embedding layer 14 and the inner side surface 1143 of the flange, preventing the The copper embedded layer 14 is peeled off from the inner side surface 1143 of the flange. In this way, the through hole 114 of the aluminum fin set 11 is in contact with the first end 1211 of the copper heat pipe 121 through the contact surface 142 of the copper intercalation layer 14 on the inner side surface 1143 of the flange (eg, welded).

Please continue to refer to FIG. 8 for a schematic diagram of another alternative implementation of the heat pipe of the present invention. Although it is shown above that two copper heat pipes 121 pass through one side of the aluminum fin group 11. But not limited to this, in other alternative implementations, the heat sink structure 10 includes a plurality of copper heat pipes 121 (four are shown in the figure), and the aluminum fin group 11 is provided with a transparent number equal to the number of the copper heat pipes 121 described above. Holes 114 and channels 115, and the copper heat pipes 121 are respectively staggered or non-staggered through opposite sides of the aluminum fin group 11 and combined with the aluminum fin group 11, so as to lift The heat dissipation efficiency of the heat sink structure 10 .

The above description is only illustrative rather than restrictive for the present invention, and those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined by the claims. All will fall within the protection scope of the present invention.

Claims (7)

1. A heat sink assembly having a heat pipe, comprising:

at least one aluminum fin group, which is formed by fastening a plurality of aluminum fins and is provided with a bottom surface and a top surface, a flow channel is arranged between two adjacent aluminum fins, the bottom surface is provided with at least one channel, the channel is provided with a channel opening and a channel inner side surface, each aluminum fin is provided with at least one through hole penetrating through the aluminum fin, the through hole is provided with a through hole flange protruding from one side of the aluminum fin, the inner side surface of the channel serving as a part to be combined of the aluminum fin group is provided with a copper embedding layer, the copper embedding layer is provided with a deep surface and a contact surface, and the deep surface is combined with the channel inner side surface and is deep into the channel inner side surface;

at least one copper heat pipe with a first end and a second end penetrating through the through hole and the channel of the aluminum fin set, the first end is tightly matched and combined with the flange of the through hole, and the second end is contacted and combined with the contact surface of the copper embedding layer on the inner side surface of the channel.

2. A heat sink assembly having a heat pipe as recited in claim 1 wherein: the second end of the at least one heat pipe is provided with a heat pipe exposed surface and a heat pipe contact surface, the heat pipe exposed surface is exposed from the channel opening, and the heat pipe contact surface is in contact combination with the contact surface of the copper embedding layer on the inner side of the channel.

3. A heat sink assembly having a heat pipe as recited in claim 1 wherein: the thru hole flange ring is provided with a corrugated or barbed structure and is tightly bound to the outer surface of the first end.

4. A heat sink assembly having a heat pipe as recited in claim 1 wherein: the bottom surface of the aluminum fin set can be used as another part to be combined to be provided with the copper embedded layer.

5. A heat sink assembly having a heat pipe, comprising:

at least one aluminum fin group, which is formed by fastening a plurality of aluminum fins and is provided with a bottom surface and a top surface, a flow channel is arranged between two adjacent aluminum fins, the bottom surface is provided with at least one channel, the channel is provided with a channel opening and a channel inner side surface, each aluminum fin is provided with at least one through hole which penetrates through the aluminum fin, the through hole is provided with a through hole flange which protrudes from one side of the aluminum fin and defines a flange inner side surface, the channel inner side surface and the flange inner side surface are respectively used as a part to be combined of the aluminum fin group and are provided with a copper embedding layer with a deep surface and a contact surface, and the deep surface is respectively combined with the channel inner side surface and the flange inner side surface and is deep into the channel inner side surface and the flange inner side surface;

at least one copper heat pipe with a first end and a second end respectively penetrating through the through hole and the channel of the aluminum fin set, wherein the first end is loosely combined with the flange of the through hole and is contacted and combined with the contact surface of the copper embedding layer on the inner side surface of the flange, and the second end is contacted and combined with the contact surface of the copper embedding layer on the inner side surface of the channel.

6. The heat sink assembly with a heat pipe of claim 5, wherein: the second end of the at least one heat pipe has a heat pipe exposed surface exposed from the channel opening, and a heat pipe contact surface in contact with and bonded to the contact surface of the copper embedding layer inside the channel.

7. The heat sink assembly with a heat pipe of claim 5, wherein: the bottom surface of the fin assembly can be used as another part to be combined to be provided with the copper embedded layer.

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