A method for manufacturing an air-cooled radiator and the air-cooled radiator itself.

Abstract

This invention provides a method for manufacturing an air-cooled heat sink and the air-cooled heat sink itself. The method for manufacturing the air-cooled heat sink includes: Step S1, obtaining an aluminum rod and heating the aluminum rod; Step S2, placing the aluminum rod on an extruder with a mold and pushing the aluminum rod so that it is extruded from a predetermined gap to form a long strip plate; Step S3, cutting the long strip plate to form multiple fins; Step S4, obtaining a first pressure plate and a second pressure plate, inserting the top ends of the multiple fins one-to-one into the first rectangular groove, and inserting the bottom ends of the multiple fins one-to-one into the second rectangular groove to form an air-cooled heat sink; Step S5, obtaining a fan, and placing the fan facing the longitudinal end of the fins to blow or draw air onto the fins to form an air-cooled heat sink. The method for manufacturing the air-cooled heat sink of this invention is simple and efficient, can achieve double-layer heat dissipation, has low thermal resistance, and low cost.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation, and in particular to a method for manufacturing an air-cooled radiator and the air-cooled radiator itself. Background Technology

[0002] Chips (such as central processing unit chips, graphics processing unit chips, and IGBT chips) generate heat during operation. In order to maintain the proper functioning of the chips, heat dissipation is required.

[0003] Existing chip heat sinks typically use a pressure plate and multiple fins connected together. The pressure plate and fins are integrally formed by machining, which is costly. Alternatively, the fins and pressure plate are separate, and the pressure plate is joined to the fins by vacuum brazing or bonding, which is a complex process with low efficiency and is prone to problems with high contact thermal resistance. Moreover, typical chip heat sinks can only dissipate heat from one side of the chip. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, the present invention aims to provide a method for manufacturing an air-cooled radiator and an air-cooled radiator thereof. The manufacturing method is simple and efficient, can achieve double-layer heat dissipation, has low thermal resistance, and is low in cost.

[0005] To address the above problems, the present invention provides a method for manufacturing an air-cooled heat sink, the method comprising:

[0006] Step S1: Obtain an aluminum rod and heat the aluminum rod;

[0007] Step S2: Place the aluminum rod on an extruder with a mold, and make one end face of the aluminum rod abut against the mold. The mold has a predetermined gap, and the shape of the predetermined gap on the end face of the mold is a single closed shape. Push the aluminum rod so that the aluminum rod is extruded from the predetermined gap to form a long strip of sheet.

[0008] Step S3: The long strip plate is cut into multiple fins, wherein the predetermined gap is vertically arranged and its main body is formed as a rectangular gap so that the fin is formed as a plate. A first serrated hole protruding outward is formed on the upper part of the first side of the main body, and a second serrated hole protruding outward is formed on the lower part, so that the upper part of the first side of the fin is formed as a first serration, and the lower part of the first side of the fin is formed as a second serration.

[0009] Step S4: Obtain a first pressure plate and a second pressure plate. The upper surface of the first pressure plate and the lower surface of the second pressure plate are both used to connect with the chip. The lower surface of the first pressure plate has a plurality of first rectangular grooves, and the upper surface of the second pressure plate has a plurality of second rectangular grooves. The top ends of the plurality of fins are inserted into the first rectangular grooves one by one, so that the first serrations are in an interference fit with the first rectangular grooves. The bottom ends of the plurality of fins are inserted into the second rectangular grooves one by one, so that the second serrations are in an interference fit with the second rectangular grooves. The second side of the fins is in contact with the sidewalls of the first rectangular grooves and the second rectangular grooves to form a wind-cooled heat sink.

[0010] Step S5: Obtain a fan and place the fan facing the longitudinal end of the fins to blow or draw air onto the fins to form an air-cooled heat sink.

[0011] Furthermore, both the first and second sawtooth holes are formed with wavy sawtooths, and their tips are formed into triangles, trapezoids, or arcs.

[0012] When the fin is inserted into the first rectangular groove and the second rectangular groove, the tip of the first serration can be squeezed and collapsed by the first rectangular groove, and the tip of the second serration can be squeezed and collapsed by the second rectangular groove.

[0013] Furthermore, the first serrated hole is at a first predetermined distance from the top of the predetermined gap, and the second serrated hole is at a second predetermined distance from the top of the predetermined gap, such that the first serration of the fin is at the first predetermined distance from the top surface of the fin, and the second serration of the fin is at the second predetermined distance from the bottom surface of the fin.

[0014] Further, step S4 includes:

[0015] Step S41: Pick up the second pressure plate and place it on the workbench, then insert the non-second serration portion of the bottom end of the fin into the second serration groove.

[0016] Step S42: Pick up the first pressure plate and use the first rectangular groove of the first pressure plate to accommodate the non-first serrated part of the top of the fin, thereby achieving initial positioning;

[0017] Step S43: Apply downward pressure to the first pressure plate and / or apply upward pressure to the second pressure plate, so that the first serration of the fin is in interference fit with the first rectangular groove, and the second serration of the fin is in interference fit with the second rectangular groove, and the top surface of the fin abuts against the top wall of the first rectangular groove, and the bottom surface of the fin abuts against the bottom wall of the second rectangular groove.

[0018] Furthermore, a protruding hole is formed outwardly at the center of the second lateral side of the predetermined gap, and a U-shaped hole is formed outwardly at the center of the first lateral side of the predetermined gap, so that a protrusion is formed at the center of the second lateral side of the fin, and a U-shaped groove is formed at the center of the first lateral side of the fin.

[0019] In two adjacent fins, the protrusion of one fin can be accommodated in the U-shaped groove of the other fin, and there is a predetermined gap between the protrusion and the U-shaped groove.

[0020] Furthermore, a third serrated hole is formed on the upper and / or lower surface of the protrusion, so that the upper or lower surface of the fin protrusion has a third serration.

[0021] Furthermore, rectangular holes are formed on both sides of the predetermined gap in the lateral direction, which are arranged at intervals in the vertical direction, so that spacers are formed on both sides of the fin in the lateral direction.

[0022] Furthermore, the manufacturing method also includes:

[0023] Step S6: Obtain two first side plates, which are respectively connected to the two transverse ends of the first and second pressure plates by fasteners.

[0024] Alternatively, step S4 may further include: acquiring two second side plates, each with a partially upward-protruding top and a partially downward-protruding bottom portion forming a locking block; both the lower surface of the first pressure plate and the upper surface of the second pressure plate having slots at their transverse ends that mate with the locking blocks; the sidewall of the locking block having a third serration capable of interference fit with the slot; before the fins are interference-fitted with the first and second rectangular grooves, inserting the top / bottom ends of the side plates into the slots of the first and second pressure plates respectively; and simultaneously interfering with the interference fit between the fins and the first and second rectangular grooves, interfering with the interference fit between the third serration and the slot.

[0025] The thickness of both the first side plate and the second side plate is greater than the thickness of the fin.

[0026] Furthermore, the manufacturing method also includes:

[0027] Step S6: Obtain the thermoelectric cooler, temperature detectors, and controller. Connect the thermoelectric cooler to the outside of at least one air-cooled side plate. Set the two temperature detectors on the upper surface of the first pressure plate and the lower surface of the second pressure plate, respectively. Connect the controller to the two temperature detectors and the thermoelectric cooler. When one or both of the two temperature detectors detect a temperature higher than a predetermined temperature, activate the thermoelectric cooler. The air-cooled side plate is either the first side plate or the second side plate.

[0028] This invention provides an air-cooled heat sink, the air-cooled heat sink comprising:

[0029] The air-cooled radiator is manufactured using any of the air-cooled radiator manufacturing methods described above.

[0030] Due to the above technical solution, the present invention has the following beneficial effects:

[0031] According to the manufacturing method of the air-cooled heat sink of the present invention, an aluminum rod extrusion die is used to extrude a long strip of plate from a predetermined gap in the die, and then cut it into multiple fins. The fin formation efficiency is high, meeting the needs of mass production, and the cost is low. The top ends of the multiple fins are inserted one-to-one into a first rectangular groove, and the bottom ends of the multiple fins are inserted one-to-one into a second rectangular groove to form an air-cooled heat sink. The fan faces the longitudinal end of the fins to form an air-cooled heat sink. The first and second serrations of the fins are both compressed and collapsed against the sidewall of the first rectangular groove, achieving close contact and fusion. The fins are pressed together, reducing contact thermal resistance. The second side of the fins is pressed against the sidewall of the first rectangular groove, and the two fit tightly together, increasing the contact area, reducing thermal resistance, improving heat exchange efficiency, and preventing the fins from bending and deforming. Forced convection is formed by the fan, drawing air into or out of the fins, improving heat exchange efficiency. In different models of air-cooled radiators, if the spacing and number of fins are adjusted, only the number and spacing of the first rectangular groove of the first pressure plate and the rectangular groove of the second pressure plate need to be changed, thus achieving fin versatility, avoiding the need for re-molding, and reducing costs. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the present invention, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0033] Figure 1This is a flowchart of a method for manufacturing an air-cooled radiator according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of fin formation according to an embodiment of the present invention;

[0035] Figure 3 This is a structural diagram of a mold according to an embodiment of the present invention;

[0036] Figure 4 This is a structural diagram of a fin according to an embodiment of the present invention;

[0037] Figure 5 yes Figure 4 Enlarged view of region B in the image;

[0038] Figure 6 This is a structural diagram of the second pressure plate according to an embodiment of the present invention;

[0039] Figure 7 This is a structural diagram of an air-cooled heat sink according to an embodiment of the present invention;

[0040] Figure 8 yes Figure 7 Front view of the air-cooled heat sink in the embodiment;

[0041] Figure 9 yes Figure 8 Enlarged view of region A in the image;

[0042] Figure 10 This is a structural diagram of an air-cooled heat sink according to another embodiment of the present invention;

[0043] Figure 11 yes Figure 10 Enlarged view of region C in the image;

[0044] Figure 12 This is a structural diagram of an air-cooled radiator according to an embodiment of the present invention.

[0045] 1000, Air-cooled heat sink; 1100, First pressure plate; 1110, Slot; 1200, Second pressure plate; 1210, Second rectangular groove; 1300, Fin; 1310, Substrate; 1320, Protrusion; 1330, U-shaped groove; 1340, Spacer; 1350, First serration; 1360, Second serration; 1410, First side plate; 1420, Second side plate; 1421, Third serration; 2100, Fan; 2200, Semiconductor cooling chip; 3100, Aluminum rod; 3200, Mold; 3210, Pre-defined gap; 3211, Rectangular gap; 3212, First serrated hole; 3213, Second serrated hole; 3214, Protruding hole; 3215, U-shaped hole; 3216, Rectangular hole; 3300, Long strip plate. Detailed Implementation

[0046] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0048] The following describes the manufacturing method of the air-cooled heat sink according to an embodiment of the present invention.

[0049] like Figures 1 to 12 As shown, the method for manufacturing an air-cooled heat sink according to an embodiment of the present invention includes:

[0050] Step S1: Obtain aluminum rod 3100 and heat aluminum rod 3100.

[0051] The aluminum rod 3100 is softened by heating to facilitate subsequent extrusion. The end face of the aluminum rod 3100 can be round, polygonal, or elliptical.

[0052] In step S2, the aluminum rod 3100 is placed on an extruder with a mold 3200, and one end face of the aluminum rod 3100 abuts against the mold 3200. The mold 3200 has a predetermined gap 3210. The predetermined gap 3210 is a single closed shape on the end face of the mold 3200. The aluminum rod 3100 is pushed so that it is extruded from the predetermined gap 3210 to form a long strip plate 3300.

[0053] like Figure 2 and Figure 3 As shown, the aluminum rod 3100 with a rectangular end face abuts against one end face of the mold 3200. The softened aluminum rod 3100 is pushed out from the predetermined gap 3210 by the force. Since the predetermined gap 3210 forms a single closed shape on the end face of the mold 3200, the extruded part is a single continuous strip plate 3300.

[0054] It should be noted that the number of predetermined gaps 3210 in the mold 3200 can be one or more, which can allow the aluminum rod 3100 to simultaneously extrude multiple long strip plates 3300. All of these should be understood within the scope of the present invention.

[0055] Step S3: The long strip plate 3300 is cut into multiple fins 1300. The predetermined gap 3210 is vertically arranged, and its main body is formed as a rectangular gap 3211 so that the fin 1300 is formed as a plate. A first serrated hole 3212 protruding outward is formed on the upper part of the first side of the main body, and a second serrated hole 3213 protruding outward is formed on the lower part, so that the upper / lower part of the first side of the fin 1300 has a first serration 1350 / second serration 1360.

[0056] According to the required length of fin 1300, the long strip plate 3300 is cut into multiple fins 1300. For example... Figure 3 and Figure 4 As shown, the aluminum rod 3100 is extruded from a rectangle into a plate shape. A first serrated hole 3212 protrudes outward from the upper part of the first transverse side of the rectangular slit 3211, thereby forming a first serration 1350 on the upper part of the first transverse side of the fin 1300. A second serrated hole 3213 protrudes outward from the lower part of the first transverse side of the rectangular slit 3211, thereby forming a second serration 1360 on the lower part of the first transverse side of the fin 1300.

[0057] Step S4: Obtain the first pressure plate 1100 and the second pressure plate 1200. The upper surface of the first pressure plate 1100 and the lower surface of the second pressure plate 1200 are both used to connect with the chip. The lower surface of the first pressure plate 1100 has a plurality of first rectangular grooves, and the upper surface of the second pressure plate 1200 has a plurality of second rectangular grooves 1210. Insert the top ends of the plurality of fins 1300 into the first rectangular grooves one by one, so that the first serrations 1350 are in interference fit with the first rectangular grooves. Insert the bottom ends of the plurality of fins 1300 into the second rectangular grooves 1210 one by one, so that the second serrations 1360 are in interference fit with the second rectangular grooves 1210. And make the second side of the fins 1300 in lateral direction abut against the sidewalls of the first rectangular grooves and the second rectangular grooves 1210 to form the air-cooled heat sink 1000.

[0058] The upper surface of the first pressure plate 1100 and the lower surface of the second pressure plate 1200 can both be connected to the chip to achieve two-layer heat dissipation and improve utilization.

[0059] The top end of fin 1300 is inserted into the first rectangular groove of the first pressure plate 1100, and the bottom end of fin 1300 is inserted into the second rectangular groove 1210 of the second pressure plate 1200. The first serration 1350 of fin 1300 is interference-fitted with the first rectangular groove, and the second serration 1360 of fin 1300 is interference-fitted with the second rectangular groove 1210. The interference fit is simple to operate and highly efficient. During the interference fit, the first pressure plate 1100 and the second pressure plate 1200 approach each other, and the first serration 1350 of fin 1300 is squeezed and collapsed against the sidewall of the first rectangular groove, and the second serration 1360 of fin 1300 is squeezed and collapsed against the sidewall of the second rectangular groove, thereby achieving close contact and fusion, reducing contact thermal resistance. The second lateral side of fin 1300 is squeezed against the sidewall of the first rectangular groove. The two plates are closely fitted together, increasing the contact area, reducing thermal resistance, and improving heat exchange efficiency. The first pressure plate 1100 and the second pressure plate 1200 gradually approach each other, and the top wall of the first rectangular groove and the bottom wall of the second rectangular groove can contact and squeeze the top and bottom surfaces of the fin 1300 to achieve a tight fit and reduce contact thermal resistance. The first serration 1350 and the second serration 1360 are both located on the first side of the fin 1300 in the lateral direction. The second side of the fin 1300 in the lateral direction is closely fitted with the side walls of the first rectangular groove and the second rectangular groove 1210. This ensures that the second side of the fin 1300 always abuts against the first rectangular groove and the second rectangular groove during the insertion process of the fin 1300. This can prevent the fin 1300 from bending and deforming in the interference fit, thereby improving product yield.

[0060] Moreover, the cross-sectional area of ​​the top of the first sawtooth 1350 and the second sawtooth 1360 is small, so the force per unit area is greater and it is easier to collapse. The cross-sectional area of ​​the bottom is large, so the force per unit area is small, which can provide stable support and stably abut against the side walls of the first rectangular groove and the second rectangular groove.

[0061] Step S5: Obtain the fan 2100 and place the fan 2100 facing the longitudinal end of the fin 1300 to blow or draw air onto the fin 1300 to form an air-cooled heat sink.

[0062] like Figure 12 As shown, when the fan 2100 blows or draws air into the fins 1300, forced convection can be formed. The fins 1300 have a large surface area, which can increase the heat exchange capacity.

[0063] The above method for manufacturing an air-cooled radiator involves extruding a long strip of sheet material 3300 from a predetermined gap 3210 in an aluminum rod extrusion die 3200. This strip is then cut into multiple fins 1300. The fins 1300 are formed efficiently, meeting the needs of mass production, and at a low cost. The top ends of the multiple fins 1300 are inserted one-to-one into a first rectangular groove, and the bottom ends are inserted one-to-one into a second rectangular groove 1210, forming an air-cooled heat sink 1000. A fan 2100 is positioned facing the longitudinal end of the fins 1300 to form the air-cooled radiator. The first serration 1350 and the second serration 1360 of the fins 1300 both interact with the sidewall of the first rectangular groove. The fins collapse under pressure, achieving close contact and fusion, reducing contact thermal resistance. The second lateral side of the fin 1300 is compressed against the sidewall of the first rectangular groove, resulting in a tight fit between the two, increasing the contact area, reducing thermal resistance, improving heat exchange efficiency, and preventing the fin 1300 from bending and deforming. Forced convection is formed by the fan 2100, drawing air into or out of the fins 1300, further improving heat exchange efficiency. In different models of air-cooled radiators, if the spacing and number of fins 1300 are adjusted, only the number and spacing of the first rectangular groove of the first pressure plate 1100 and the rectangular groove of the second pressure plate 1200 need to be changed, thus achieving the versatility of the fins 1300, avoiding the need for re-molding, and reducing costs.

[0064] In some embodiments of the present invention, the first serrated hole 3212 and the first serrated hole 3212 are both formed as wavy serrations, and their top ends are formed as triangles, trapezoids or arcs. When the fin 1300 is inserted into the first rectangular groove and the second rectangular groove 1210, the top end of the first serration 1350 can be squeezed and collapsed by the first rectangular groove, and the top end of the second serration 1360 can be squeezed and collapsed by the second rectangular groove 1210.

[0065] like Figure 8 and Figure 9 As shown, the top of the first saw tooth 1350 is formed as an isosceles trapezoid. During the process of the wavy saw tooth being squeezed against the side wall of the second rectangular groove 1210, the cross-sectional area of ​​its top is smaller, and the force per unit area is greater, making it easier to collapse. The cross-sectional area of ​​its bottom is larger, and the force per unit area is smaller, so it can provide stable support and stably abut against the side wall of the second rectangular groove 1210.

[0066] Moreover, during the compression process between the wavy serrations and the first rectangular groove and the second rectangular groove 1210, the tips of the wavy serrations will wear off, thereby increasing the contact area between the fin 1300 and the first rectangular groove and reducing the contact thermal resistance.

[0067] It should be noted that this is only an optional example, and the shape of the tip of the wavy serration is not limited here. Any formation with a gradually decreasing cross-sectional area from the bottom to the top should be understood to be within the scope of this invention.

[0068] In some embodiments of the present invention, the first serrated hole 3212 is at a first predetermined distance from the top of the predetermined gap 3210, and the first serrated hole 3212 is at a second predetermined distance from the top of the predetermined gap 3210, so that the first serration 1350 of the fin 1300 is at a first predetermined distance from the top surface of the fin 1300, and the second serration 1360 of the fin 1300 is at a second predetermined distance from the bottom surface of the fin 1300.

[0069] like Figure 9 As shown, the second serration 1360 is at a second predetermined distance α from the bottom surface (lowest plane) of the fin 1300. During the initial positioning process (the top and bottom ends of the fin 1300 are respectively inserted into the first rectangular groove of the first pressure plate 1100 and the second rectangular groove 1210 of the second pressure plate 1200, and this process is before the interference fit), the top and bottom ends of the fin 1300 are respectively inserted into the first rectangular groove of the first pressure plate 1100 and the second rectangular groove 1210 of the second pressure plate 1200. The portion of the top end of the fin 1300 that is not the first serration 1350 and the portion of the bottom end of the fin 1300 that is not the second serration 1360 can be well accommodated in the first rectangular groove and the second rectangular groove 1210, preventing the fin 1300 from tilting and failing to achieve initial positioning, and preventing the first pressure plate 1100 and the second pressure plate 1200 from getting close to each other in the subsequent process of achieving the interference fit with the fin 1300, which could easily cause the fin 1300 to bend and deform.

[0070] The first predetermined distance and the second predetermined distance can be set according to the maximum tilt angle allowed by the fin 1300 during the initial positioning process in the first rectangular groove and the second rectangular groove 1210.

[0071] Further, step S4 includes: step S41, picking up the second pressure plate 1200 and placing it on the worktable, inserting the portion of the bottom end of the fin 1300 that is not the second serration 1360 into the groove of the second serration 1360; step S42, picking up the first pressure plate 1100, accommodating the portion of the top end of the fin 1300 that is not the first serration 1350 into the first rectangular groove of the first pressure plate 1100, thereby achieving initial positioning; step S43, applying downward pressure to the first pressure plate 1100 and / or applying upward pressure to the second pressure plate 1200, so that the first serration 1350 of the fin 1300 and the first rectangular groove achieve an interference fit, and the second serration 1360 of the fin 1300 and the second rectangular groove 1210 achieve an interference fit, and the top surface of the fin 1300 abuts against the top wall of the first rectangular groove, and the bottom surface of the fin 1300 abuts against the bottom wall of the second rectangular groove 1210.

[0072] The tip of the fin 1300, which is not the first serration 1350, can be accommodated in the first rectangular groove, and the tip of the fin 1300, which is not the second serration 1360, can be accommodated in the first rectangular groove, thereby achieving initial positioning and preventing the fin 1300 from tipping over.

[0073] By applying pressure to the first pressure plate 1100 and / or the second pressure plate 1200, the first pressure plate 1100 and the second pressure plate 1200 are brought closer together, thereby squeezing the fin 1300. This achieves an interference fit between the first serration 1350 of the fin 1300 and the first rectangular groove, and an interference fit between the second serration 1360 of the fin 1300 and the second rectangular groove 1210. Furthermore, the top surface of the fin 1300 abuts against the top wall of the first rectangular groove, and the bottom surface of the fin 1300 abuts against the bottom wall of the second rectangular groove 1210. This increases the tight contact between the fin 1300 and the first rectangular groove and the second rectangular groove 1210, reduces contact thermal resistance, and improves heat exchange efficiency.

[0074] Therefore, the fin 1300 can be easily assembled with the first pressure plate 1100 and the second pressure plate 1200, which is efficient, has high structural stability and low cost.

[0075] Furthermore, a protrusion 3214 is formed outwardly at the center of the second transverse side of the predetermined gap 3210, and a U-shaped hole 3215 is formed outwardly at the center of the first transverse side of the predetermined gap 3210, so that a protrusion 1320 is formed at the center of the second transverse side of the fin 1300, and a U-shaped groove 1330 is formed at the center of the first transverse side of the fin 1300. In two adjacent fins 1300, the protrusion 1320 of one fin 1300 can be accommodated in the U-shaped groove 1330 of the other fin 1300, and a predetermined gap 3210 exists between the protrusion 1320 and the U-shaped groove 1330.

[0076] like Figure 4 and Figure 5 As shown, two protrusions 1320 are formed in the middle of the second lateral side of the fin 1300, and two U-shaped grooves 1330 are formed in the middle of the first lateral side.

[0077] During the initial positioning process, in two adjacent fins 1300, the protrusion 1320 of one fin 1300 can be laterally inserted into the U-shaped groove 1330 of the other fin 1300. There is a predetermined gap 3210 between the protrusion 1320 and the U-shaped groove 1330, so that the adjacent fins 1300 can tilt at a small angle, which can prevent the fins 1300 from tilting at a large angle and causing bending deformation.

[0078] Moreover, during the initial positioning process, and during the pressing of the fin 1300 by the first pressure plate 1100 and the second pressure plate 1200, the fin 1300 may experience slight wobbling. The predetermined gap 3210 can provide space for the fin 1300 to tilt at a small angle, thus preventing this wobbling from causing interference between the protrusion 1320 and the U-shaped groove 1330, which could result in damage to the protrusion 1320 and the U-shaped groove 1330.

[0079] Moreover, the protrusion 1320 and the U-shaped groove 1330 work together to increase the verticality of the fin 1300 and reduce the deformation in the middle of the fin 1300, which is especially suitable for cases where the fin 1300 is relatively thin.

[0080] Furthermore, a third serration 1421 hole is formed on the top and / or bottom of the protrusion 3214, so that the upper or lower surface of the protrusion 1320 of the fin 1300 is formed with the third serration 1421.

[0081] like Figure 5 As shown, even during the process of pressing the fin 1300 with the first pressure plate 1100 and the second pressure plate 1200 to achieve an interference fit, if the protrusion 1320 interferes with the U-shaped groove 1330, the top of the third serration 1421 can be squeezed and collapsed, thus avoiding the overall bending of the protrusion 1320 or the U-shaped groove 1330, or the situation where the top and bottom of the fin 1300 cannot be fully inserted into the first rectangular groove and the second rectangular groove 1210.

[0082] In some embodiments of the present invention, rectangular holes 3216 arranged vertically spaced apart are formed on both sides of the predetermined slit 3210, so that spacers 1340 arranged vertically spaced apart are formed on both sides of the fin 1300.

[0083] like Figure 4As shown, longitudinally extending spacers 1340 are provided on both sides of the substrate 1310 of the fin 1300 in the lateral direction. The spacers 1340 can further increase the heat exchange area and improve the heat exchange capacity.

[0084] In some embodiments of the present invention, the manufacturing method further includes:

[0085] Step S6: Obtain two first side plates, which are respectively connected to the two transverse ends of the first pressure plate 1100 and the second pressure plate 1200 by fasteners.

[0086] Alternatively, step S5 may further include: acquiring two second side plates, each with a partially upward protruding top and a partially downward protruding bottom, forming a locking block; the lower surface of the first pressure plate 1100 and the upper surface of the second pressure plate 1200 each having a locking groove 1110 at both transverse ends that mates with the locking block; the sidewall of the locking block having a third serration 1421 that can be interference-fitted with the locking groove 1110; before the fin 1300 is interference-fitted with the first rectangular groove and the second rectangular groove 1210, inserting the top / bottom of the side plate into the locking groove 1110 of the first pressure plate 1100 / the locking groove 1110 of the second pressure plate 1200 respectively; and simultaneously interfering with the fin 1300 with the first rectangular groove and the second rectangular groove 1210, interfering with the third serration 1421 with the locking groove 1110.

[0087] The thickness of both the first and second side plates is greater than the thickness of the fin 1300.

[0088] The stability of the air-cooled heat sink 1000 can be improved by using two first side plates or a second side plate. Since the fins 1300 are relatively thin, the thicker first side plates or second side plates can better protect the fins 1300 and prevent them from being damaged by external impacts.

[0089] like Figure 7 As shown, a bolt (fastener) penetrates the upper part of the first side plate and is threadedly connected to the first pressure plate 1100, or a bolt (fastener) penetrates the lower part of the side plate and is threadedly connected to the second pressure plate 1200. The fastener can be a bolt, screw, etc. This structure, secured by fasteners, allows for easy disassembly, and the use of fasteners ensures a tight connection between the first side plate, the first pressure plate 1100, and the second pressure plate 1200, reducing contact thermal resistance.

[0090] like Figure 10 and 11As shown, a locking block is formed by a partial upward protrusion at the top of the second side plate. The sidewall of the locking block has a third serration 1421. A slot 1110 is formed on the lower surface of the first pressure plate 1100. The third serration 1421 can be interference-fitted with the slot 1110. During the initial positioning process, the fin 1300 and the two second side plates are combined with the first pressure plate 1100 and the second pressure plate 1200. As the first pressure plate 1100 and the second pressure plate 1200 approach each other, the second side plate 1420 is thicker than the fin 1300. Even if the first pressure plate 1100 and the second pressure plate 1200 are over-pressed, the limiting effect of the second side plate can prevent the first pressure plate 1100 and the second pressure plate 1200 from approaching each other further, and will not cause the relatively thin fin 1300 to be completely deformed. This can protect the fin 1300 during the manufacturing process of the air-cooled heat sink 1000. Furthermore, the interference fit between the third serration 1421 and the slot 1110 can also reduce the contact thermal resistance between the second side plate and the first pressure plate 1100 and the second pressure plate 1200.

[0091] Furthermore, the manufacturing method also includes step S6, obtaining a thermoelectric cooler 2200, a temperature detector and a controller, connecting the thermoelectric cooler 2200 to the outside of the first side plate 1410 or the second side plate 1420, setting two temperature detectors on the upper surface of the first pressure plate 1100 and the lower surface of the second pressure plate 1200 respectively, and connecting the controller to the two temperature detectors and the thermoelectric cooler 2200, so that when the temperature detected by one or both of the two temperature detectors is higher than a predetermined temperature, the thermoelectric cooler 2200 is activated.

[0092] like Figure 12 As shown, a thermoelectric cooler 2200 is disposed on the outer surface of the first side plate. The thermoelectric cooler 2200 is easy to install and consumes less power.

[0093] For example, when the temperature detector detects that the temperature of the upper surface of the first pressure plate 1100 is higher than the predetermined temperature, it indicates that the fan 2100 is malfunctioning or the ambient temperature is too high. At this time, the controller activates the thermoelectric cooler 2200 to cool the first side plate 1410. The first side plate 1410 transfers the temperature to the first pressure plate 1100, thereby quickly cooling the chip on the first pressure plate 1100 and preventing the chip from overheating and affecting its operation. Moreover, the fan 2100 can accelerate the airflow around the air-cooled heat sink 1000 and the chip, preventing the air-cooled heat sink 1000 and the chip from frosting due to the cooling of the thermoelectric cooler 2200. Thus, it can cool down the chip in time when the chip temperature is too high, protecting the chip. When the chip temperature is normal, the thermoelectric cooler 2200 does not start, only the fan 2100 starts, which can reduce energy consumption.

[0094] The following describes an embodiment of the air-cooled heat sink of the present invention.

[0095] The air-cooled radiator of this invention is manufactured by the air-cooled radiator manufacturing method of the above embodiments. The beneficial effects of the air-cooled radiator have been explained in its manufacturing method and will not be described in detail here.

[0096] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for manufacturing an air-cooled radiator, characterized in that, The manufacturing method includes: Step S1: Obtain an aluminum rod and heat the aluminum rod; Step S2: Place the aluminum rod on an extruder with a mold, and make one end face of the aluminum rod abut against the mold. The mold has a predetermined gap, and the shape of the predetermined gap on the end face of the mold is a single closed shape. Push the aluminum rod so that the aluminum rod is extruded from the predetermined gap to form a long strip of sheet. Step S3: The long strip plate is cut into multiple fins. The predetermined gap is set vertically and its main body is formed as a rectangular gap so that the fin is formed as a plate. A first serrated hole protruding outward is formed on the upper part of the first horizontal side of the main body, and a second serrated hole protruding outward is formed on the lower part, so that the upper part of the first horizontal side of the fin forms a first serration, and the lower part of the first horizontal side of the fin forms a second serration. Step S4: Obtain a first pressure plate and a second pressure plate. The upper surface of the first pressure plate and the lower surface of the second pressure plate are both used to connect with the chip. The lower surface of the first pressure plate has a plurality of first rectangular grooves, and the upper surface of the second pressure plate has a plurality of second rectangular grooves. The top ends of the plurality of fins are inserted into the first rectangular grooves one by one, so that the first serrations are in an interference fit with the first rectangular grooves. The bottom ends of the plurality of fins are inserted into the second rectangular grooves one by one, so that the second serrations are in an interference fit with the second rectangular grooves. The second side of the fins is in contact with the sidewalls of the first rectangular grooves and the second rectangular grooves to form a wind-cooled heat sink. Step S5: Obtain a fan and place the fan facing the longitudinal end of the fins to blow or draw air onto the fins to form an air-cooled heat sink.

2. The method for manufacturing an air-cooled radiator according to claim 1, characterized in that, Both the first and second sawtooth holes are formed with wavy sawtooths, and their tips are formed into triangles, trapezoids, or arcs. When the fin is inserted into the first rectangular groove and the second rectangular groove, the tip of the first serration can be squeezed and collapsed by the first rectangular groove, and the tip of the second serration can be squeezed and collapsed by the second rectangular groove.

3. The method for manufacturing an air-cooled radiator according to claim 2, characterized in that, The first serrated hole is at a first predetermined distance from the top of the predetermined gap, and the second serrated hole is at a second predetermined distance from the top of the predetermined gap, such that the first serration of the fin is at the first predetermined distance from the top surface of the fin, and the second serration of the fin is at the second predetermined distance from the bottom surface of the fin.

4. The method for manufacturing an air-cooled radiator according to claim 3, characterized in that, Step S4 includes: Step S41: Pick up the second pressure plate and place it on the workbench, then insert the non-second serrated portion of the bottom end of the fin into the second rectangular groove; Step S42: Pick up the first pressure plate and use the first rectangular groove of the first pressure plate to accommodate the non-first serrated part of the top of the fin, thereby achieving initial positioning; Step S43: Apply downward pressure to the first pressure plate and / or apply upward pressure to the second pressure plate, so that the first serration of the fin is in interference fit with the first rectangular groove, and the second serration of the fin is in interference fit with the second rectangular groove, and the top surface of the fin abuts against the top wall of the first rectangular groove, and the bottom surface of the fin abuts against the bottom wall of the second rectangular groove.

5. The method for manufacturing an air-cooled radiator according to claim 4, characterized in that, A protruding hole is formed outwardly at the middle of the second transverse side of the predetermined slot, and a U-shaped hole is formed outwardly at the middle of the first transverse side of the predetermined slot, so that a protrusion is formed at the middle of the second transverse side of the fin, and a U-shaped groove is formed at the middle of the first transverse side of the fin. In two adjacent fins, the protrusion of one fin can be accommodated in the U-shaped groove of the other fin, and there is a predetermined gap between the protrusion and the U-shaped groove.

6. The method for manufacturing an air-cooled radiator according to claim 5, characterized in that, The upper and / or lower surfaces of the protrusion are formed with a third serrated hole, so that the upper or lower surface of the protrusion of the fin is formed with a third serration.

7. The method for manufacturing an air-cooled radiator according to claim 1, characterized in that, The predetermined gap has rectangular holes arranged vertically spaced apart on both sides in the lateral direction, so that the fin has spacers arranged vertically spaced apart on both sides in the lateral direction.

8. The method for manufacturing an air-cooled radiator according to claim 1, characterized in that, The manufacturing method further includes: Step S6: Obtain two first side plates, which are respectively connected to the two transverse ends of the first and second pressure plates by fasteners. Alternatively, step S4 may further include: obtaining two second side plates, each with a partially upward-protruding top and a partially downward-protruding bottom portion forming a locking block; the lower surface of the first pressure plate and the upper surface of the second pressure plate each having a slot at both transverse ends that mates with the locking block; the sidewall of the locking block having a third serration capable of interference fit with the slot; before the fins are interference-fitted with the first and second rectangular grooves, the top / bottom ends of the side plates are respectively inserted into the slots of the first and second pressure plates; while the fins are interference-fitted with the first and second rectangular grooves, the third serrations are interference-fitted with the slots. The thickness of both the first side plate and the second side plate is greater than the thickness of the fin.

9. The method for manufacturing an air-cooled radiator according to claim 8, characterized in that, The manufacturing method further includes: Step S6: Obtain the thermoelectric cooler, temperature detectors, and controller. Connect the thermoelectric cooler to the outside of the first side plate or the second side plate. Set the two temperature detectors on the upper surface of the first pressure plate and the lower surface of the second pressure plate, respectively. Connect the controller to the two temperature detectors and the thermoelectric cooler so that the thermoelectric cooler is activated when one or both of the two temperature detectors detect a temperature higher than a predetermined temperature.

10. A wind-cooled radiator, characterized in that, The air-cooled radiator is manufactured by the air-cooled radiator manufacturing method according to any one of claims 1 to 9.

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