Liquid Cooling Radiator

Abstract

An embodiment of the present invention provides a liquid-cooled radiator, including a main body, wherein the main body includes a first heat dissipation surface, wherein the main body has a first interface, a second interface, and at least two first coolant channels connected in parallel between the first interface and the second interface; wherein: the at least two first coolant channels are adjacently arranged in a spiral shape within a circular area of ​​the main body, and the first interface is located at the center of the circular area, and the second interface is located at the edge of the circular area; the at least two first coolant channels are respectively located on a first plane adjacent to the first heat dissipation surface, and dissipate heat for the device on the first heat dissipation surface. The embodiment of the present invention increases the contact area between the coolant and the main body by connecting at least two first coolant channels in parallel, thereby effectively reducing the flow resistance and thermal resistance of the liquid-cooled radiator and improving the heat dissipation capacity of the liquid-cooled radiator.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of heat dissipation, and more specifically, to a liquid cooling radiator. Background Art

[0002] High-power press-fit devices such as thyristors, rectifier diodes, and diodes are generally disc-shaped and support a double-sided water-cooled heat dissipation structure. These high-power press-fit devices have a high thermal power density and have high requirements for the thermal resistance and flow resistance of the water-cooled plate, so a reasonable heat sink flow channel structure plays a key role in the application of these devices.

[0003] The flow channel structure of the current high-power press-fit device heat sink is mostly matched with the size of the device, and has a double-layer spiral water channel structure. The two layers of water channels are used to dissipate heat for the devices installed on the two sides of the heat sink. There are currently two commonly used spiral water channels: spaced spiral flow channels and center-inlet spiral flow channels.

[0004] like Figure 1 As shown, in the heat sink with spaced spiral channels, the fluid flows from the water inlet 11 on the outside of the disk along the tapered spiral water channel to the center of the circle, and then flows from the center of the circle along the tapered spiral water channel to the water outlet 12 on the outside of the disk. The inflow and outflow water channels are alternately distributed, and the water channels are divided into two layers, thereby supporting double-sided heat dissipation. If the heat source of the high-power crimping type device is uniform, the above water channel has the advantage of uniform temperature. However, actual high-power crimping type devices often have a higher heat density at the center of the circle. A heat sink with the above water channel structure will cause the high-power crimping type device to have a higher center temperature. Figure 2 As shown in FIG. 1 , it is a schematic diagram of the temperature and static pressure of the fluid at various locations in the water channel of a radiator with spaced spiral flow channels; Figure 3 FIG. 1 is a schematic diagram of the surface temperature of a high-power press-fit device that uses the heat sink with the spaced spiral flow channels to dissipate heat.

[0005] like Figure 4 As shown, in the central water inlet spiral flow channel, the water channels for fluid inflow and outflow are changed, and the fluid flows from the water inlet 21 outside the disk into the center of the disk along the straight channel between the upper and lower water channels, and then is divided from the center to the upper and lower water channels, and flows along the gradually expanding spiral water channel to the water outlet 22 outside the disk. In this way, low-temperature fluid flows through the center, which can solve the problem of high heat density in the center.

[0006] However, the water channels of the above two radiators both adopt a single-tube structure, so the heat dissipation area and flow rate can only be increased by increasing the spiral line density, but this will lead to an increase in the length of the water channel and a decrease in the flow cross-section, thereby significantly increasing the flow resistance and causing a decrease in flow rate in actual application, and the heat dissipation capacity cannot be improved.

[0007] And, if Figure 5As shown, the water channel of the existing spiral water-cooled radiator is formed by mechanical processing, that is, two water channels are processed on the upper and lower surfaces of the middle layer 31 respectively, and are symmetrical in structure. After the water channel processing is completed, the middle layer 31 and the cover plate 33 are welded together through a thin layer of brazing material 32 using a vacuum brazing process. However, since the water channel is located in the middle layer 31, the quality of the welding effect will have a great impact on the heat dissipation capacity of the radiator. In addition, the mechanical processing method makes the radiator processing cost higher. Summary of the invention

[0008] The embodiments of the present invention provide a new liquid cooling radiator to address the problems that the above-mentioned spiral water channel radiator increases the water channel length and decreases the actual flow rate when improving the heat dissipation capacity, and the mechanical process for processing the water channel is costly and the welding effect affects the heat dissipation capacity.

[0009] The technical solution of the present invention to solve the above technical problems is to provide a liquid-cooled radiator, including a main body, and the main body includes a first heat dissipation surface, the main body has a first interface, a second interface and at least two first coolant channels, and the at least two first coolant channels are connected in parallel between the first interface and the second interface; wherein: the at least two first coolant channels are adjacently arranged in a spiral shape within a circular area of ​​the main body, and the first interface is located at the central position of the circular area, and the second interface is located at the edge of the circular area; the at least two first coolant channels are respectively located on a first plane adjacent to the first heat dissipation surface, and dissipate heat for the devices on the first heat dissipation surface.

[0010] Preferably, the main body includes a second heat dissipation surface parallel to the first heat dissipation surface, and the main body has at least two second coolant channels, the at least two second coolant channels are connected in parallel between the first interface and the second interface, and the at least two second coolant channels are respectively arranged in adjacent spirals within the circular area; the at least two second coolant channels are respectively located on a second plane adjacent to the second heat dissipation surface, and dissipate heat for the devices on the second heat dissipation surface. .

[0011] Preferably, the main body has a third interface, at least two third coolant channels and at least two fourth coolant channels, and the third interface is located at the edge of the circular area;

[0012] The at least two third coolant channels are respectively located on the first plane, and the at least two third coolant channels are connected in parallel between the first interface and the third interface; the at least two third coolant channels are in a spiral shape arranged adjacent to each other in the circular area, and the at least two third coolant channels are alternately distributed with the at least two first coolant channels;

[0013] The at least two fourth coolant channels are respectively located on the second plane, and the at least two fourth coolant channels are connected in parallel between the first interface and the third interface; the at least two fourth coolant channels are in a spiral shape arranged adjacent to each other within the circular area, and the at least two fourth coolant channels are distributed alternately with the at least two second coolant channels.

[0014] Preferably, the main body includes a fourth interface, and the fourth interface is located at the edge of the circular area; the main body has a fifth coolant channel for connecting the first interface and the fourth interface, and the fifth coolant channel is located between the first plane and the second plane.

[0015] Preferably, the main body comprises an intermediate layer, a first cover plate and a second cover plate;

[0016] The first cover plate is welded to the upper surface of the middle layer, the at least two first coolant channels are located between the middle layer and the first cover plate, and the first heat dissipation surface is located on the surface of the first cover plate facing away from the middle layer;

[0017] The second cover plate is welded to the lower surface of the middle layer, the at least two second coolant channels are located between the middle layer and the second cover plate, and the second heat dissipation surface is located on the surface of the second cover plate facing away from the middle layer.

[0018] Preferably, the at least two first coolant channels are respectively formed by spiral grooves on a surface of the first cover plate facing the middle layer, and the at least two second coolant channels are respectively formed by spiral grooves on a surface of the second cover plate facing the middle layer.

[0019] Preferably, the spiral groove on the first cover plate and the spiral groove on the second cover plate are formed by forging process respectively.

[0020] Preferably, the first cover plate and the second cover plate have the same thickness, and the thickness of the intermediate layer is smaller than the thickness of the first cover plate or the second cover plate.

[0021] Preferably, the at least two first coolant channels are respectively formed by spiral grooves on the surface of the intermediate layer facing the first cover plate, and the at least two second coolant channels are respectively formed by spiral grooves on the surface of the intermediate layer facing the second cover plate.

[0022] Preferably, the spiral grooves on the upper surface of the intermediate layer and the spiral grooves on the lower surface of the intermediate layer are respectively formed by forging processes, and the thickness of the intermediate layer is greater than the thickness of the first cover plate and the second cover plate.

[0023] The liquid cooling radiator of the embodiment of the present invention increases the contact area between the cooling liquid and the main body through at least two first cooling liquid channels connected in parallel, thereby effectively reducing the flow resistance and thermal resistance of the liquid cooling radiator and improving the heat dissipation capacity of the liquid cooling radiator. In addition, the embodiment of the present invention also processes the cooling liquid channel through a forging process, which can greatly reduce the cost of the liquid cooling radiator and increase the application range of high-power crimping type devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the water channel in the radiator of the existing spaced spiral flow channel;

[0025] Figure 2 It is a schematic diagram of the temperature and pressure of the fluid in the radiator of the existing spaced spiral flow channel;

[0026] Figure 3 It is a schematic diagram of the surface temperature of a high-power press-fit type device using a heat sink with an existing spaced spiral flow channel for heat dissipation;

[0027] Figure 4 It is a structural schematic diagram of the water channel in the radiator of the existing central water inlet spiral flow channel;

[0028] Figure 5 It is a schematic diagram of the welding structure of the existing radiator;

[0029] Figure 6 is a schematic structural diagram of a cooling liquid channel in a liquid cooling radiator provided by an embodiment of the present invention;

[0030] Figure 7 is a schematic diagram of the cross-sectional structure of a cooling liquid channel in a liquid cooling radiator provided by an embodiment of the present invention;

[0031] Figure 8 is a schematic structural diagram of a coolant channel in a liquid cooling radiator provided by another embodiment of the present invention;

[0032] Fig. 9 yes Figure 8 A schematic diagram of the pressure of the coolant in the liquid cooling radiator;

[0033] Fig.10 is used Figure 8 Schematic diagram of the surface temperature of a high-power press-fit device that is cooled by a liquid-cooled heat sink;

[0034] Fig.11 It is a schematic diagram of the welding structure of the liquid cooling radiator provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] The liquid-cooled heat sink of the embodiment of the present invention can be applied to the heat dissipation of high-power press-fit devices, and the liquid-cooled heat sink can adopt a spaced spiral flow channel or a central water inlet spiral flow channel.

[0037] like Figure 6 As shown, it is a schematic diagram of a liquid cooling radiator provided by an embodiment of the present invention, and the liquid cooling radiator adopts an interval spiral flow channel. The liquid cooling radiator of this embodiment includes a main body 6, and the main body 6 includes a first heat dissipation surface (the first heat dissipation surface can be located on a side surface of the main body 6), and the main body 6 has a first interface 61, a second interface 62, a third interface 64, two first cooling liquid channels 63 and two third cooling liquid channels 65. The above-mentioned two first cooling liquid channels 63 are connected in parallel between the first interface 61 and the second interface 62, and the two third cooling liquid channels 65 are connected in parallel between the first interface 61 and the third interface 64. And in order to increase the surface area of ​​the first cooling liquid channel 63 (that is, to increase the contact area between the coolant of the first cooling liquid channel 63 and the main body 6), the two first cooling liquid channels 63 are adjacently arranged in a spiral shape in the circular area of ​​the main body 6, and similarly, the two third cooling liquid channels 65 are also adjacently arranged in a spiral shape in the circular area of ​​the main body 6, and the two first cooling liquid channels 63 and the two third cooling liquid channels 65 are alternately distributed. The first interface 61 is located at the center of the circular area, the second interface 62 is located at the edge of the circular area, and the third interface 64 is also located at the edge of the circular area. The two first coolant channels 63 (i.e., the center point of the cross section at each axial position of each first coolant channel 63) and the two third coolant channels 65 (i.e., the center point of the cross section at each axial position of each third coolant channel 65) are respectively located on the first plane, and the first plane is parallel to the first heat dissipation surface, and the first plane is adjacent to the first heat dissipation surface, so that the heat dissipation of the high-power press-fit type device attached to the first heat dissipation surface can be achieved.

[0038] When in use, the external water inlet pipe can be connected to the third interface 64, and the water outlet pipe can be connected to the second interface 62, so that the coolant flowing in from the external water inlet pipe can flow into the two third coolant channels 65 through the third interface 64, and reach the first interface 61 after flowing through the third coolant channels 65. At the first interface 61, the coolant enters the two first coolant channels 63, and then flows out to the water outlet pipe through the two first coolant channels 63 and the second interface 62. The above-mentioned liquid-cooled radiator can double the contact area between the coolant and the main body 6 without increasing the length of the coolant channel, compared with the existing radiator with a spaced single-tube spiral flow channel, through the parallel first coolant channel 63 and the third coolant channel 65, thereby greatly improving the heat dissipation capacity of the liquid-cooled radiator. Since the lengths of the first coolant channel 63 and the third coolant channel 65 remain unchanged, the liquid-cooled radiator of this embodiment can ensure that the flow resistance of the coolant in the main body 6 remains unchanged, thereby improving the heat dissipation capacity of the liquid-cooled radiator.

[0039] Of course, in practical applications, the number of the first coolant channels 63 and the third coolant channels 65 can be increased according to the power density of the high-power crimping type device. For example, the number of the first coolant channels 63 can be three or more, and the number of the third coolant channels 65 can be three or more.

[0040] In another embodiment of the present invention, the liquid cooling radiator can achieve double-sided heat dissipation, that is, in addition to the first heat dissipation surface located on one side surface of the main body 6, it also includes a second heat dissipation surface located on the other side surface of the main body 6, and the second heat dissipation surface is parallel to the first heat dissipation surface. Figure 7 As shown, in addition to the two first coolant channels 63 and the two third coolant channels 65, the main body 6 also has at least two second coolant channels 67 and at least two fourth coolant channels 66, and the at least two second coolant channels 67 and at least two fourth coolant channels 66 (i.e., the center points of the cross-sections of each second coolant channel 67 and each fourth coolant channel 66 at various axial positions) are respectively located in the second plane, and the second plane is parallel to and adjacent to the second heat dissipation surface, so that the high-power press-fit type components attached to the second heat dissipation surface can be cooled through the at least two second coolant channels 67 and the at least two fourth coolant channels 66.

[0041] The at least two second coolant channels 67 are connected in parallel between the first interface 61 and the second interface 62, and the at least two fourth coolant channels 66 are connected in parallel between the first interface 61 and the third interface 64, and the at least two fourth coolant channels 66 are arranged alternately with the at least two second coolant channels 67. In order to increase the surface area of ​​the second coolant channels 67 and the fourth coolant channels 66, the at least two second coolant channels 67 may be arranged in a spiral shape adjacent to each other in the circular area of ​​the main body 6, and similarly, the at least two fourth coolant channels 66 may also be arranged in a spiral shape adjacent to each other in the circular area of ​​the main body 6.

[0042] The liquid cooling radiator of the embodiment of the present invention can also adopt a central water inlet spiral flow channel, such as Figure 8 As shown. The liquid-cooled radiator of this embodiment includes a main body 7, and the main body 7 includes a first heat dissipation surface (the first heat dissipation surface may be located on a side surface of the main body 7), and the main body 7 has a first interface 71, a second interface 72, a fourth interface 74, two first coolant channels 73 and a fifth coolant channel. The above-mentioned two first coolant channels 73 are connected in parallel between the first interface 71 and the second interface 72, and the fifth coolant channel is connected between the first interface 71 and the fourth interface 74. In addition, the two first coolant channels 73 are adjacently arranged in a spiral shape within the circular area of ​​the main body 7, and the fifth coolant channel is linear. The first interface 71 is located at the center of the circular area, the second interface 72 is located at the edge of the circular area, and the fourth interface 74 is also located at the edge of the circular area. The two first coolant channels 73 (i.e., the center points of the cross sections of each first coolant channel 73 at each axial position) are located on the first plane, and the fifth coolant channel is located on the side of the first plane away from the first heat dissipation surface. The above-mentioned first plane is parallel to the first heat dissipation surface, and the first plane is adjacent to the first heat dissipation surface, thereby realizing the heat dissipation of high-power press-fit devices attached to the first heat dissipation surface.

[0043] When in use, the external water inlet pipe can be connected to the fourth interface 74, and the water outlet pipe can be connected to the second interface 72, so that the coolant flowing in from the external water inlet pipe can flow into the fifth coolant channel through the fourth interface 74, and flow through the fifth coolant channel 75 to reach the first interface 71. At the first interface 71, the coolant enters the two first coolant channels 73, and then flows out to the water outlet pipe through the two first coolant channels 73 and the second interface 72. In this embodiment, since the external coolant directly flows into the first interface 71 at the central position of the main body through the linear fifth coolant channel, and then flows out through the outwardly expanded spiral first coolant channel 73, the problem of high heat density in the center of the high-power press-fit type device on the first heat dissipation surface can be solved.

[0044] Of course, in practical applications, the number of the first cooling liquid channels 73 can be increased according to the power density of the high-power compression-type device. For example, the number of the first cooling liquid channels 73 can be three or more.

[0045] and Figure 6 , 7 Similarly to the embodiment of the present invention, the liquid-cooled radiator using the central water inlet spiral flow channel can achieve double-sided heat dissipation. At this time, in addition to the first heat dissipation surface and the first coolant channel 73, the main body 7 also includes a second heat dissipation surface and at least two third coolant channels 77 connected in parallel between the first interface 71 and the second interface 72, and the two third coolant channels 77 (i.e., the center point of the cross section of each axial position of each third coolant channel 77) are respectively located on the second plane (the second plane is parallel to the second heat dissipation surface and is arranged adjacent to the second heat dissipation surface), and the at least two third coolant channels 73 are arranged adjacently in a spiral shape in the circular area of ​​the main body 7. The fifth coolant channel is located between the first plane and the second plane.

[0046] like Figure 9-10 As shown, the above-mentioned liquid cooling radiator using the central water inlet spiral flow channel has a flow channel thermal resistance reduced by about 20% compared with the existing radiator using the interval single-tube spiral flow channel.

[0047] In one embodiment of the present invention, the main body 6, 7 of the liquid-cooled radiator includes an intermediate layer 601, a first cover plate 602 and a second cover plate 603, wherein the intermediate layer 601, the first cover plate 602 and the second cover plate 603 are respectively made of materials with a high thermal conductivity (e.g., aluminum or aluminum alloy), and the first cover plate 602 is welded to the upper surface of the intermediate layer 601 through a first solder layer 604, and at least two first coolant channels are located between the intermediate layer 601 and the first cover plate 602 (when the liquid-cooled radiator adopts an interval spiral flow channel, at least two third coolant channels are also located between the intermediate layer 601 and the first cover plate 602). When the liquid-cooled radiator adopts a central water-inlet spiral flow channel, the fifth coolant channel is located in the middle layer 601), and the first heat dissipation surface is located on the surface of the first cover plate 602 that faces away from the middle layer 601; similarly, the second cover plate 603 is welded to the lower surface of the middle layer 601 through the second solder layer 605, at least two second coolant channels are located between the middle layer 601 and the second cover plate 603 (when the liquid-cooled radiator adopts a spaced spiral flow channel, at least two fourth coolant channels are also located between the middle layer 601 and the second cover plate 603), and the second heat dissipation surface is located on the surface of the second cover plate 603 that faces away from the middle layer 601. Of course, in practical applications, the first cover plate 602 and the second cover plate 603 can also be welded to the middle layer 601 through other materials.

[0048] Specifically, the at least two first coolant channels can be respectively formed by spiral grooves on the surface of the first cover plate 602 facing the middle layer 601 (when the liquid-cooled radiator adopts an interval-type spiral flow channel, at least two third coolant channels are also formed by spiral grooves on the surface of the first cover plate 602 facing the middle layer 601; when the liquid-cooled radiator adopts a central water inlet spiral flow channel, the fifth coolant channel is located between the spiral grooves on both sides of the middle layer 601), and at least two second coolant channels are respectively formed by spiral grooves on the surface of the second cover plate 603 facing the middle layer 601 (when the liquid-cooled radiator adopts an interval-type spiral flow channel, at least two fourth coolant channels are also formed by spiral grooves on the surface of the second cover plate 603 facing the middle layer 601). At this time, the middle layer 601 is mainly used to isolate the first coolant channel and the second coolant channel, so the thickness of the middle layer 601 can be less than the thickness of the first cover plate 602 or the second cover plate 603.

[0049] Of course, in practical applications, at least two first coolant channels can be respectively formed by spiral grooves on the surface of the middle layer 601 facing the first cover plate 602 (when the liquid-cooled radiator adopts an interval spiral flow channel, at least two third coolant channels are also formed by spiral grooves on the surface of the middle layer 601 facing the first cover plate 602), and at least two second coolant channels are respectively formed by spiral grooves on the surface of the second cover plate 603 facing the middle layer 601 (when the liquid-cooled radiator adopts an interval spiral flow channel, at least two fourth coolant channels are also formed by spiral grooves on the surface of the middle layer 601 facing the second cover plate 603). At this time, the thickness of the first cover plate 602 and the second cover plate 603 is less than the thickness of the middle layer 601. Of course, the heat dissipation effect of this structure is relatively poor.

[0050] In addition, in order to reduce processing costs, the spiral grooves on the first cover plate 602, the second cover plate 603 or the intermediate layer 601 can be formed by forging. Of course, in practical applications, the spiral grooves on the first cover plate 602, the second cover plate 603 or the intermediate layer 601 can also be machined, but the processing cost is relatively high.

[0051] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A liquid cooling radiator, comprising a main body, wherein the main body comprises a first heat dissipation surface, characterized in that: The main body has a first interface, a second interface and at least two first coolant channels, and the at least two first coolant channels are connected in parallel between the first interface and the second interface, and the outlet pipe is connected to the second interface; wherein: the at least two first coolant channels are adjacently arranged in a spiral shape within a circular area of ​​the main body, and the first interface is located at the central position of the circular area, and the second interface is located at the edge of the circular area; the at least two first coolant channels are respectively located on a first plane adjacent to the first heat dissipation surface, and dissipate heat for the components on the first heat dissipation surface; The main body has a third interface and at least two third coolant channels, the third interface is located at the edge of the circular area and is used to connect the water inlet pipe; the at least two third coolant channels are respectively located on the first plane, and the at least two third coolant channels are connected in parallel between the first interface and the third interface; the at least two third coolant channels are in a spiral shape arranged adjacent to each other in the circular area, and the at least two third coolant channels are distributed alternately with the at least two first coolant channels.

2. The liquid cooling radiator according to claim 1, characterized in that: The first heat dissipation surface is located on one side surface of the main body, and the other side surface of the main body includes a second heat dissipation surface parallel to the first heat dissipation surface. The main body has at least two second coolant channels, and the at least two second coolant channels are connected in parallel between the first interface and the second interface, and the at least two second coolant channels are respectively arranged in adjacent spirals within the circular area; the at least two second coolant channels are respectively located on second planes adjacent to the second heat dissipation surface, and dissipate heat for devices on the second heat dissipation surface.

3. The liquid cooling radiator according to claim 2, characterized in that: The main body has at least two fourth coolant channels; the at least two fourth coolant channels are respectively located on the second plane, and the at least two fourth coolant channels are connected in parallel between the first interface and the third interface; the at least two fourth coolant channels are in a spiral shape arranged adjacent to each other in the circular area, and the at least two fourth coolant channels are distributed alternately with the at least two second coolant channels.

4. The liquid cooling radiator according to any one of claims 2-3, characterized in that: The main body includes an intermediate layer, a first cover plate and a second cover plate; The first cover plate is welded to the upper surface of the middle layer, the at least two first coolant channels are located between the middle layer and the first cover plate, and the first heat dissipation surface is located on the surface of the first cover plate facing away from the middle layer; The second cover plate is welded to the lower surface of the middle layer, the at least two second coolant channels are located between the middle layer and the second cover plate, and the second heat dissipation surface is located on the surface of the second cover plate facing away from the middle layer.

5. The liquid cooling radiator according to claim 4, characterized in that: The at least two first coolant channels are respectively formed by spiral grooves on a surface of the first cover plate facing the middle layer, and the at least two second coolant channels are respectively formed by spiral grooves on a surface of the second cover plate facing the middle layer.

6. The liquid cooling radiator according to claim 5, characterized in that: The spiral groove on the first cover plate and the spiral groove on the second cover plate are respectively formed by forging process.

7. The liquid cooling radiator according to claim 5, characterized in that: The first cover plate and the second cover plate have the same thickness, and the thickness of the intermediate layer is smaller than the thickness of the first cover plate or the second cover plate.

8. The liquid cooling radiator according to claim 4, characterized in that: The at least two first coolant channels are respectively formed by spiral grooves on the surface of the intermediate layer facing the first cover plate, and the at least two second coolant channels are respectively formed by spiral grooves on the surface of the intermediate layer facing the second cover plate.

9. The liquid cooling radiator according to claim 8, characterized in that: The spiral grooves on the upper surface of the middle layer and the spiral grooves on the lower surface of the middle layer are respectively formed by forging processes, and the thickness of the middle layer is greater than the thickness of the first cover plate and the second cover plate.

10. A liquid cooling radiator, comprising a main body, wherein the main body comprises a first heat dissipation surface, characterized in that: The main body has a first interface, a second interface and at least two first coolant channels, and the at least two first coolant channels are connected in parallel between the first interface and the second interface, and the outlet pipe is connected to the second interface; wherein: the at least two first coolant channels are adjacently arranged in a spiral shape within a circular area of ​​the main body, and the first interface is located at the central position of the circular area, and the second interface is located at the edge of the circular area; the at least two first coolant channels are respectively located on a first plane adjacent to the first heat dissipation surface, and dissipate heat for the components on the first heat dissipation surface; The main body includes a fourth interface for connecting a water inlet pipe, and the fourth interface is located at the edge of the circular area; the main body has a fifth coolant channel for connecting the first interface and the fourth interface, and the fifth coolant channel is located between the first plane and the second plane.

Images