Small gap heat sink structure and water cooling radiator

Abstract

The present invention discloses a small-gap heat sink structure and a water-cooled radiator thereof, which comprises at least three heat sink bodies stacked in sequence, and adopts a stacking structure to form a water-cooled radiator. The water-cooled radiator is assembled, interlaced, and positioned by connecting ears, vacant positions, and convexities of each heat sink body, so as to realize combined assembly, that is, the heat sink bodies at adjacent odd-numbered and even-numbered positions are mutually positioned and fixed by the clamping force between the heat sink bodies, so as to realize that the heat sink bodies cannot move left and right, up and down, front and back relative to each other after assembly. The overall structure has good stability and tight fit. Moreover, the gap between two adjacent heat sink bodies is determined by the height of the flange on the heat sink body, and is no longer limited by the thickness of the heat sink body. A smaller heat sink gap and a larger number of heat sinks can be achieved within a single volume, thereby increasing the number of coolant diversions, improving diffusion uniformity, and increasing the total contact area between the heat sink and the coolant, thereby improving the heat dissipation effect.

Description

Technical Field

[0001] The invention relates to radiator technology, and in particular to a small-gap radiating fin structure used in a water-cooling radiator and a water-cooling radiator using the structure. Background Art

[0002] Integrated circuits are widely used in computer components. As we all know, high temperature is the enemy of integrated circuits. High temperature will not only cause unstable system operation and shorten service life, but may even burn some components. The heat that causes high temperature does not come from outside the computer, but from inside the computer, or inside the integrated circuit. Integrated circuits will generate a lot of heat when working. In order to dissipate the heat of the integrated circuit, good heat dissipation is required to ensure its normal operation and operation. People have designed various radiators.

[0003] The heat sink often increases the heat dissipation area by setting a number of fins on the substrate. The traditional heat sink adopts a profile structure and is pultruded into a number of pull-type fins through a forming die at one time. However, due to the limitation of the mold during the pultrusion process, the gap between the pull-pieces cannot be adjusted. When the gap is too large, the heat dissipation area is too small and the heat dissipation efficiency is low. When the gap is small, the forming mold is easily damaged, the production cost is high, and the mold service life is short.

[0004] For this purpose, a skived-tooth heat sink is launched on the market, such as the publication number "CN207476076U", and the name is "a skived-tooth heat sink", which discloses a skived-tooth heat sink, which has several sections on the surface of the substrate, which are formed by skiving a section of the substrate surface and tilting upward to form a sheet-like tilted part, the root of the sheet-like tilted part is connected to the substrate, and multiple sections of the sheet-like tilted parts are arranged in sequence to form a fin-shaped heat sink. Simply put, a whole piece of aluminum or copper is cut into heat sinks with standard spacing, a certain thickness and a certain height according to needs through a special scraping machine. However, the gap between two adjacent heat sinks can only be greater than or equal to the thickness of the heat sink. If the thickness of the heat sink is too thin, the strength is poor and it is easy to deform or damage. For this reason, the thickness of the heat sink is usually selected to be not less than 0.5mm. That is, the minimum theoretical value of the gap between the two fins can only be 0.5mm, while in actual production, the gap can only be 0.6 or 0.7mm or more.

[0005] When the above structure radiator is applied to a water-cooled radiator, if the gap between two adjacent fins per unit volume of the radiator is large, the number of fins will be reduced accordingly, and there will be fewer fins in the cooling cavity. The number of coolant diversions by the fins will be reduced accordingly, and the diffusion will not be very uniform, thus affecting the heat dissipation efficiency. If the gap between the fins can be reduced and the number of fins can be increased within the same volume, the heat dissipation effect of the water-cooled radiator can be further improved. Summary of the invention

[0006] In view of the above-mentioned deficiencies, the present invention aims to provide a small-gap heat sink structure and a water-cooled radiator thereof with a reasonable structural design, which can reduce the heat sink gap, increase the number of heat sinks, and improve the heat dissipation effect.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a technical solution: a small gap heat sink structure, which includes a heat sink body, the upper and lower edges of the heat sink body are bent toward a surface direction to form a flange, and connecting ears are symmetrically provided at both ends of the flange. The front protrusion of the connecting ear forms a joint part, and the tail is hollowed out to form a socket that matches the shape of the joint part. The length of the socket is greater than the insertion length of the joint part to form an assembly gap, and a clamping protrusion that matches the assembly gap is provided on the socket at a position corresponding to the assembly gap, and a vacant position is provided on the edge of the heat sink body corresponding to a side position of the connecting ear for the connecting ear of the adjacent heat sink body to pass through.

[0008] As an improvement of the present invention, the height of the flange is equal to the spacing distance between two adjacent heat sink bodies. The height of the flange is less than the thickness of the heat sink body. The height of the flange is less than or equal to 0.4 mm. That is, the gap between two adjacent heat sink bodies is less than or equal to 0.4 mm, which can achieve a smaller heat sink gap, thereby facilitating the increase of the number of heat sinks and further improving the heat dissipation effect of the water-cooled radiator.

[0009] As an improvement of the present invention, the end surface of the flange is pressed against the back surface of the heat sink body located in front of it, and the matching stability is good.

[0010] As an improvement of the present invention, the joint portion includes a large step protrusion, a medium step protrusion and a small step protrusion stacked in sequence, and the height of the large step protrusion is consistent with the height of the flange. Since the large step protrusion and the flange jointly support and press the heat sink body at the previous position, the structural stability is good.

[0011] As an improvement of the present invention, the socket includes a front empty position matched with the small step protrusion and a rear empty position matched with the middle step protrusion, and the large step protrusion is matched with the empty position.

[0012] As an improvement of the present invention, the heat sink body is a copper sheet or an aluminum sheet with high thermal conductivity efficiency.

[0013] A water-cooled radiator adopting the above-mentioned small gap heat sink structure comprises at least three heat sink bodies stacked in sequence, the connecting ears and sockets of the heat sink bodies at odd-numbered positions are relatively straightly arranged, and the connecting ears and sockets of the heat sink bodies at even-numbered positions are relatively straightly arranged, the connecting ears and sockets of the heat sink bodies at odd-numbered positions are staggered with the connecting ears and sockets of the heat sink bodies at even-numbered positions, the connecting ears of the heat sink bodies at the middle position pass through and match the vacant positions of the heat sink bodies at the previous positions; the connecting ears of the heat sink bodies at the latter positions match the vacant positions of the heat sink bodies at the middle positions and pass through and extend into the sockets of the heat sink bodies at the previous positions, and the convex parts of the heat sink bodies at the previous positions are buckled in the assembly gap position of the sockets of the heat sink bodies at the latter positions, and are mutually positioned and fixed by the clamping force between the heat sink bodies at adjacent odd-numbered and even-numbered positions.

[0014] As the heat dissipation factor is gradually increased, more and more heat is discharged, and the discharge hole of the first heat dissipation device is shortened, and the time is shortened, and the discharge hole of the first heat dissipation device is shortened, so that the heat dissipation effect is improved drastically. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the decomposition structure of the present invention.

[0017] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0018] Figure 4 yes Figure 2 Schematic diagram of the enlarged structure of part B in the middle.

[0019] Figure 5 yes Figure 2 Schematic diagram of the enlarged structure of local C in the middle. DETAILED DESCRIPTION

[0020] Example: See Figure 1 and Figure 3 This embodiment provides a water-cooled radiator, which includes a plurality of heat sinks stacked in sequence. The heat sink 1 can be made of copper or aluminum, which has high thermal conductivity.

[0021] The upper and lower edges of the heat sink body 1 are bent toward a surface direction (such as the front direction) to form a flange 2. During assembly, the end face of the flange 2 can press against the back of the heat sink body 1 located in front of it, and the matching stability is good. For this reason, the gap d between two adjacent heat sink bodies 1 is determined by the raised height h of the flange 2. That is, the raised height h of the flange 2 is equal to the distance d between the two adjacent heat sink bodies 1. Moreover, the raised height of the flange 2 is not limited by the thickness of the heat sink body 1, and the raised height of the flange 2 can be set to be less than the thickness of the heat sink body 1. In actual production, the raised height of the flange 2 is preferably less than or equal to 0.4 mm. That is, the gap between the two adjacent heat sink bodies 1 is less than or equal to 0.4 mm, which can achieve a smaller heat sink gap, thereby increasing the number of heat sinks. For example, in this embodiment, the thickness of the heat sink body 1 is 0.5 mm, and the gap d between adjacent heat sink bodies 1 can be 0.3 mm.

[0022] The two ends of the flange 2 are symmetrically provided with connecting ears 3, the front part of the connecting ears 3 protrudes to form a joint part, and the rear part is hollowed out to form a socket 4 that matches the shape of the joint part. The length of the socket 4 is greater than the insertion length of the joint part to form an assembly gap 43. Specifically, the joint part includes a large step protrusion 31, a middle step protrusion 32 and a small step protrusion 33 stacked in sequence, and the height of the large step protrusion 31 is consistent with the height of the flange 2. Since the large step protrusion 31 and the flange 2 jointly support and press the heat sink body 1 in the previous position, the structural stability is good. The socket 4 includes a front empty space 41 that matches the small step protrusion 33 and a rear empty space 42 that matches the middle step protrusion 32.

[0023] A protrusion 6 matching the assembly gap 43 is provided on the socket 4 at a position corresponding to the assembly gap 43, and a vacant position 5 for the connecting ear 3 of the adjacent heat sink body 1 to pass through is provided on the edge of the heat sink body 1 at a position corresponding to one side of the connecting ear 3. The large step protrusion 31 matches the vacant position 5.

[0024] During assembly, the heat sink bodies 1 at odd-numbered positions have the same structure, that is, the connecting ears 3 and the sockets 4 of the heat sink bodies 1 at odd-numbered positions are relatively straight. The heat sink bodies 1 at even-numbered positions have the same structure, that is, the connecting ears 3 and the sockets 4 of the heat sink bodies 1 at even-numbered positions are relatively straight. The connecting ears 3 and the sockets 4 of the heat sink bodies 1 at odd-numbered positions are staggered with the connecting ears 3 and the sockets 4 of the heat sink bodies 1 at even-numbered positions.

[0025] When assembling the structure, for the convenience of explanation, take three heat sinks 1 as an example, and let the connecting ear 3 of the heat sink 1 at the second position pass through the vacant position 5 of the heat sink 1 at the first position; the width of the connecting ear 3 is equal to the width of the vacant position 5, so that the purpose of assembly is achieved while passing through. After the connecting ear 3 falls into the vacant position 5 to achieve assembly, the purpose of limiting left and right movement is achieved. The flange 2 of the heat sink 1 at the second position presses against the back of the heat sink 1 at the first position.

[0026] The connecting ear 3 of the heat sink body 1 at the third position is matched with the vacant position 5 of the heat sink body 1 at the second position and extends through the vacant position 5 into the socket 4 of the heat sink body 1 at the first position, and the latching protrusion 6 of the heat sink body 1 at the first position is snapped into the assembly gap 43 of the socket 4 of the heat sink body 1 at the third position, thereby realizing the assembly of the heat sink body 1 at the first position and the third position, and at the same time, the heat sink body 1 at the second position is positioned and fixed by the clamping force of the assembly between the first position and the third position.

[0027] By analogy, the heat sink 1 at the fourth position matches the vacant position 5 of the heat sink 1 at the third position and passes through the vacant position 5 to extend into the socket 4 of the heat sink 1 at the second position, and the clamping protrusion 6 of the heat sink 1 at the second position is buckled in the assembly gap 43 of the socket 4 of the heat sink 1 at the fourth position, thereby realizing the assembly of the heat sink 1 at the fourth position and the second position. At the same time, the heat sink 1 at the third position is positioned and fixed by the clamping force assembled between the fourth position and the second position. The required number of heat sinks 1 are stacked according to the above rules to obtain a water-cooled radiator. Since the heat sinks 1 at adjacent odd and even positions are mutually positioned and fixed by the clamping force, it is realized that the heat sinks 1 cannot move left and right, up and down, or forward and backward after assembly. The overall structure has good stability and tight fit, and no additional rivets or assembly screws are required for fixing, and the structure is simple.

[0028] The water-cooled radiator of the present invention is installed in the cooling cavity. The height of the flange 2 on the fin body 1 determines the gap between two adjacent fin bodies 1, which is no longer limited by the thickness of the fin body 1. A smaller fin gap and a larger number of fins can be achieved within a single volume. When the coolant flows through the cooling cavity, a larger number of fin bodies 1 are used to shunt and dissipate the coolant, thereby improving the diffusion uniformity and achieving a good heat dissipation effect.

[0029] According to the disclosure and teaching of the above specification, technicians in the field of the present invention can also change and modify the above implementation. Therefore, the present invention is not limited to the specific implementation disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the present invention. Other radiators that are the same or similar to the radiators are all within the protection scope of the present invention.

Claims

1. A water-cooled radiator using a small-gap fin structure, characterized in that: It comprises at least three heat sink bodies stacked in sequence, the upper and lower edges of the heat sink bodies are bent toward a surface direction to form flanges, the two ends of the flanges are symmetrically provided with connecting ears, the front part of the connecting ear is convex to form a joint part, the tail part is hollowed out to form a socket adapted to the shape of the joint part, the length of the socket is greater than the insertion length of the joint part to form an assembly gap, a clamping protrusion adapted to the assembly gap is provided on the socket at a position corresponding to the assembly gap, and a vacant position for the connecting ear of the adjacent heat sink body to pass through is provided on the edge of the heat sink body corresponding to a side position of the connecting ear; The raised height of the flange is equal to the spacing distance between two adjacent heat sink bodies; The raised height of the flange is less than the thickness of the heat sink body; The raised height of the flange is less than or equal to 0.4 mm; The end surface of the flange is pressed against the back surface of the heat sink body located in front of the flange; The joint portion comprises a large step protrusion, a medium step protrusion and a small step protrusion stacked in sequence, and the height of the large step protrusion is consistent with the height of the flange; The socket includes a front empty position adapted to the small step protrusion and a rear empty position adapted to the middle step protrusion, and the large step protrusion is adapted to the empty position; The heat sink body is a copper sheet or an aluminum sheet; The gap between two adjacent heat sinks is less than or equal to 0.4 mm; The connecting ears and sockets of the heat sink bodies at odd-numbered positions are relatively straightly arranged, and the connecting ears and sockets of the heat sink bodies at even-numbered positions are relatively straightly arranged. The connecting ears and sockets of the heat sink bodies at odd-numbered positions are staggered with the connecting ears and sockets of the heat sink bodies at even-numbered positions. The connecting ears of the heat sink bodies at the middle positions pass through and match the vacant positions of the heat sink bodies at the previous positions; the connecting ears of the heat sink bodies at the latter positions match the vacant positions of the heat sink bodies at the middle positions and pass through and extend into the sockets of the heat sink bodies at the previous positions, and the convex parts of the heat sink bodies at the previous positions are snapped into the assembly gap position of the sockets of the heat sink bodies at the latter positions, and are positioned and fixed to each other by the clamping force between the heat sink bodies at adjacent odd-numbered and even-numbered positions.

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