Liquid cooling head structure

Abstract

A liquid cooling head structure is used for a working fluid to flow through, the liquid cooling head structure comprises a base, an upper shell and a liquid detection sensing cable, the base comprises a substrate, a plurality of heat dissipation fins and a wall, the heat dissipation fins are arranged on the substrate, the wall is arranged on the substrate and surrounds the heat dissipation fins, and the liquid detection sensing cable is arranged on the upper shell. The upper shell is combined and fixed corresponding to the base, a cavity is formed between the substrate and the upper shell, the upper shell is provided with a liquid inlet and a liquid outlet which are communicated with the cavity, the heat dissipation fins are contained in the cavity, the upper surface, the enclosing wall and the upper shell jointly define a liquid collecting groove, and the liquid detection sensing cable surrounds the upper shell and is arranged in the liquid collecting groove. Working fluid flows into the cavity from the liquid inlet and flows out from the liquid outlet, and when the working fluid leaks between the base and the upper shell, the working fluid is accumulated in the liquid collecting groove and is detected by the liquid detection sensing cable, so that the working fluid is prevented from leaking to the outside of the liquid cooling head structure.

Description

Technical Field

[0001] The utility model relates to the field of liquid cooling and heat dissipation, in particular to a liquid cooling head structure. Background Art

[0002] In the field of liquid cooling, a liquid cooling head is often installed on a heat source such as a motherboard or a processor to absorb the heat energy generated by the heat source to cool it down. The principle is mainly to inject a working fluid into the chamber of the liquid cooling head through a liquid inlet pipe, and the working fluid flows through a channel formed by a plurality of heat dissipation fins inside the chamber, thereby absorbing the heat energy absorbed by the heat source. Finally, the working fluid leaves the liquid cooling head through a liquid outlet pipe. Therefore, in order to facilitate production and manufacturing, most general liquid cooling heads are divided into an upper plate and a lower plate, and a plurality of heat dissipation fins are first formed on the lower plate, and then the upper plate is combined and fixed to the lower plate to form a chamber.

[0003] However, the upper plate and the lower plate of the conventional liquid cooling head are mostly connected by welding to ensure that the two can be firmly connected. However, it is difficult to ensure the sealing between the upper plate and the lower plate during the welding process, that is, the liquid cooling head after welding cannot achieve complete sealing between the joint surfaces of the upper plate and the lower plate, so that the working fluid will leak outward from the gap between the two joints, and then the working fluid will flow to the outside of the liquid cooling head, causing damage to electronic components such as the motherboard or processor in the external environment, and the user will not be able to know when the leakage occurs and deal with it in the first time. Utility Model Content

[0004] The main purpose of the present invention is to prevent the leaked working fluid from flowing to the outside of the liquid cooling head structure, thereby causing damage to electronic components in the external environment, and to be able to know the leakage of the working fluid in the first time.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a liquid cooling head structure for a working fluid to flow through. The liquid cooling head structure includes a base, an upper shell and a liquid detection sensing cable. The base includes a substrate, a plurality of heat dissipation fins and a wall. The substrate has an upper surface. Each heat dissipation fin is arranged in parallel on the upper surface. The wall is arranged on the upper surface and surrounds each heat dissipation fin. The upper shell is fixedly combined with the base to form a chamber between the upper surface and the upper shell. The upper shell has a liquid inlet and a liquid outlet connected to the chamber. Each heat dissipation fin is accommodated in the chamber. The upper surface, the inner periphery of the wall and the outer periphery of the upper shell are jointly formed to form a liquid collecting tank. Part of the liquid detection sensing cable surrounds the upper shell and is arranged in the liquid collecting tank. The working fluid flows into the chamber from the liquid inlet and flows out through the liquid outlet. When the working fluid leaks from between the base and the upper shell toward the outside of the chamber, the leaked working fluid accumulates in the liquid collecting tank and is detected by the liquid detection sensing cable.

[0006] In an embodiment of the present invention, the wall is rectangular, circular, elliptical, Jordan polygonal or irregular in shape.

[0007] In an embodiment of the present invention, at least a portion of the outer periphery of the surrounding wall is flush with the outer periphery of the base plate.

[0008] In an embodiment of the present invention, the base plate has an annular groove formed on the upper surface. The annular groove surrounds each heat dissipation fin and is located between the surrounding wall and each heat dissipation fin.

[0009] In one embodiment of the present invention, the upper shell has a lower fitting surface and an annular side wall. The annular side wall extends from the periphery of the lower fitting surface, and the end of the annular side wall is fixedly connected to the annular groove.

[0010] In one embodiment of the present invention, a sealing rubber ring is further included. A receiving groove is formed at the end of the annular side wall. The sealing rubber ring is received in the receiving groove and elastically abuts between the base plate and the annular side wall.

[0011] In one embodiment of the utility model, the upper shell has a lower bonding surface, a diversion groove and a confluence groove. The lower bonding surface is attached to the side of each heat dissipation fin away from the substrate. The diversion groove is formed on the lower bonding surface and connected to the liquid inlet. The confluence groove is formed on the lower bonding surface and connected to the liquid outlet.

[0012] In one embodiment of the present invention, the upper shell has a partition extending from the lower fitting surface. The partition is parallel to each heat dissipation fin and is located between the diversion slot and the converging slot.

[0013] In one embodiment of the present invention, the partition separates each heat dissipation fin into a plurality of liquid inlet fins and a plurality of liquid outlet fins, the diversion groove is located at the center of each liquid inlet fin, and the confluence groove is located at the center of each liquid outlet fin.

[0014] In an embodiment of the present invention, the substrate has a groove formed on the upper surface, and the end of the partition is fixed in the groove.

[0015] The liquid cooling head structure of the present invention is provided with a wall surrounding the upper shell on the upper surface of the substrate, and a liquid collecting groove is formed by the upper surface, the inner periphery of the wall and the outer periphery of the upper shell. Therefore, when the working fluid leaks, it can be accumulated in the liquid collecting groove instead of flowing to the outside of the liquid cooling head structure, thereby effectively avoiding the problem of damage to electronic components in the external environment due to the outflow of the working fluid. In addition, a liquid detection sensing cable surrounding the upper shell is provided in the liquid collecting groove, so the user can also know the leakage of the working fluid at the first time, so as to deal with it as soon as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The preferred implementation scheme will be described below in a clear and understandable manner in conjunction with the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of a liquid cooling head structure.

[0017] Figure 1 It is a three-dimensional appearance diagram of the first embodiment of the utility model.

[0018] Figure 2 It is a three-dimensional exploded view of the first embodiment of the utility model.

[0019] Figure 3 It is a top view of the first embodiment of the utility model.

[0020] Figure 4 It is a cross-sectional side view of the first embodiment of the utility model.

[0021] Figure 5 yes Figure 4 A partial enlarged view of .

[0022] Figure 6 It is a three-dimensional exploded view of the second embodiment of the utility model.

[0023] Figure 7 It is a partial cross-sectional view of the second embodiment of the utility model.

[0024] Description of Figure Numbers:

[0025] 10: base, 11: substrate, 111: upper surface, 112: lower surface, 113: annular groove, 12: heat dissipation fins, 121: liquid inlet fins, 122: liquid outlet fins, 13: surrounding wall, 131: first surrounding wall, 132: second surrounding wall, 1321: connecting section, 1322: vertical extension section, 1323: protruding section, 14: groove, 20: upper shell, 201: lower fitting surface , 202: annular side wall, 2021: accommodating groove, 203: partition, 21: chamber, 22: liquid inlet, 23: liquid outlet, 24: liquid collecting groove, 25: diversion groove, 26: confluence groove, 30: liquid detection sensor, 31: sensor body, 32: liquid detection sensing cable, 33: connecting line, 41: liquid inlet connector, 42: liquid outlet connector, 50: sealing rubber ring, 60: fixing part. DETAILED DESCRIPTION

[0026] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0027] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections.

[0028] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0029] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0030] In the description of the present invention, it needs to be understood that the terms "front side", "rear side", "left side", "right side", "front end", "rear end", "end", "longitudinal", "lateral", "vertical", "top", "bottom", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] As used herein, terms such as "first," "second," "third," "fourth," and "fifth" describe various elements, components, regions, layers, and / or portions, which should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer, or portion from another. Unless the context clearly indicates otherwise, terms such as "first," "second," "third," "fourth," and "fifth" as used herein do not imply a sequence or order.

[0032] The detailed description and technical contents of the present invention will be described below with reference to the accompanying drawings. However, the accompanying drawings are only for illustrative purposes and are not intended to limit the present invention.

[0033] The utility model provides a liquid cooling head structure for allowing a working fluid (such as water or other cooling liquid with good heat exchange rate) to flow through to dissipate heat from a heat source (not shown) at the bottom of the liquid cooling head structure. Figures 1 to 5As shown, the liquid cooling head structure of the present invention mainly includes a base 10 , an upper shell 20 and a liquid detection sensor 30 .

[0034] The base 10 is made of a metal or alloy with good thermal conductivity. The base 10 includes a substrate 11, a plurality of heat dissipation fins 12 and a wall 13. The substrate 11 has an upper surface 111 and a lower surface 112 opposite to each other. The lower surface 112 of the substrate 11 is used to be attached to a heat source to absorb the heat energy emitted by the heat source. Each heat dissipation fin 12 is arranged in parallel on the upper surface 111. In this embodiment, each heat dissipation fin 12 is divided into a plurality of liquid inlet fins 121 and a plurality of liquid outlet fins 122, but the utility model is not limited thereto, wherein each liquid inlet fin 121 is arranged at an equal distance to form a plurality of liquid inlet heat dissipation channels (not numbered in the figure), and each liquid outlet fin 122 is arranged at an equal distance to form a plurality of liquid outlet heat dissipation channels (not numbered in the figure). The wall 13 is arranged on the upper surface 111 of the substrate 11 and surrounds the outer periphery of each heat dissipation fin 12.

[0035] The upper shell 20 is made of a metal or alloy with good thermal conductivity. The upper shell 20 is fixedly coupled to the corresponding base 10, so that a chamber 21 is formed between the upper surface 111 and the upper shell 20. In the present embodiment, the upper shell 20 and the base 10 are coupled by welding, but the present invention is not limited thereto. For example, the upper shell 20 and the base 10 can also be coupled and fixed by bonding, welding, locking or other conventional methods. The upper shell 20 has a liquid inlet 22 and a liquid outlet 23 connected to the chamber 21. The liquid cooling head structure of the present invention may also include a liquid inlet connector 41 connected to the liquid inlet 22, and a liquid outlet connector 42 connected to the liquid outlet 23, so as to facilitate connection with an infusion hose (not shown) to transport the working fluid. Each heat dissipation fin 12 is accommodated in the chamber 21. The upper surface 111 of the substrate 11, the inner periphery of the wall 13 and the outer periphery of the upper shell 20 are jointly surrounded to form a liquid collecting tank 24.

[0036] The liquid detection sensor 30 mainly includes a sensor body 31, a liquid detection sensing cable 32 and a connecting line 33. The sensor body 31 is connected between the liquid detection sensing cable 32 and the connecting line 33. The connecting line 33 can transmit the signal detected by the liquid detection sensor 30 to the user end through an electrical connector (not shown in the figure), or wirelessly transmit the signal content to the user end through a wireless transmitter (not shown in the figure). The liquid detection sensor 30 used in the utility model can be specifically OMRON's F03-16PE, NetVox's R718WB, NTI (Network Technologies Incorporated)'s E-LD-LCx-y and other products. Its principle is mainly to detect the resistance change generated when the liquid detection sensing cable 32 contacts the liquid through the sensor body 31, thereby notifying the user whether there is a liquid leakage. Part of the liquid detection sensing cable 32 surrounds the upper shell 20 and is arranged in the liquid collecting tank 24.

[0037] Thereby, the working fluid flows into the chamber 21 through the liquid inlet port 22 from the liquid inlet connector 41 via the liquid infusion hose, and flows through each heat sink fin 12 to take away the heat energy absorbed by the heat source of the base 10 and conducted to each heat sink fin 12, and finally flows out from another liquid infusion hose through the liquid outlet port 23 and the liquid outlet connector 42, thereby being able to effectively and continuously dissipate the heat from the heat source. In addition, when the working fluid leaks from the joint between the base 10 and the upper shell 20 toward the outside of the chamber 21, the leaked working fluid will be accumulated in the liquid collecting tank 24 and will not flow out to the outside of the liquid cooling head structure, thereby effectively avoiding the problem of damage to electronic components in the external environment due to the outflow of the working fluid; and by providing a liquid detection sensing cable 32 surrounding the upper shell 20 in the liquid collecting tank 24, when the leaked working fluid flows into the liquid collecting tank 24, it can be detected by the liquid detection sensing cable 32, so that the user can know the leakage of the working fluid at the first time and deal with it as soon as possible.

[0038] For further explanation, see Figures 1 to 3As shown, the enclosure 13 is rectangular, circular, elliptical, Jordan polygonal or irregular. In this embodiment, the enclosure 13 is Jordan polygonal and any two adjacent sides are perpendicular to each other, but the utility model is not limited thereto. Specifically, the enclosure 13 in this embodiment includes a pair of parallel and opposite first enclosure walls 131 and a pair of parallel and opposite second enclosure walls 132, and each first enclosure wall 131 is vertically connected to the two ends of each second enclosure wall 132. Each first enclosure wall 131 is in a long strip shape. Each second enclosure 132 includes a pair of connecting sections 1321, a pair of vertical extension sections 1322 and a protruding section 1323. The ends of each vertical extension section 1322 are respectively vertically connected to the two ends of the protruding section 1323, and each connecting section 1321 is respectively vertically connected to the end of each vertical extension section 1322 away from the protruding section 1323 and the end of each first enclosure 131, so that each first enclosure 131 and each connecting section 1321 are arranged together in a rectangular shape and each vertical extension section 1322 and each protruding section 1323 extend and protrude in a direction away from each heat sink fin 12. In addition, at least a portion of the outer periphery of the enclosure 13 is flush with the outer periphery of the substrate 11, thereby increasing the liquid collection volume of the liquid collecting tank 24. In this embodiment, each first enclosure 131 and each connecting section 1321 are respectively flush with the outer periphery of the substrate 11, but the utility model is not limited thereto.

[0039] See also Figure 2 , Figure 4 and Figure 5 As shown, the base plate 11 has an annular groove 113. The annular groove 113 is formed on the upper surface 111. The annular groove 113 surrounds each heat dissipation fin 12 and is located between the enclosure 13 and each heat dissipation fin 12, that is, from the outside to the inside, the enclosure 13, the annular groove 113 and each heat dissipation fin 12 are respectively. The upper shell 20 has a lower fitting surface 201 and an annular side wall 202. The annular side wall 202 extends from the periphery of the lower fitting surface 201. The end of the annular side wall 202 is combined and fixed in the annular groove 113, so that the upper shell 20 is combined and fixed with the base 10. Thus, by providing the annular groove 113, the joint surface of the upper shell 20 and the base 10 (i.e., the end of the annular side wall 202 abuts against the bottom surface of the annular groove 113) can be lower than the upper surface 111 of the substrate 11. Therefore, when the working fluid leaks, the annular groove 113 must be filled first before overflowing to the upper surface 111 of the substrate 11, which can further slow down the leakage rate of the working fluid. In addition, after the end of the annular side wall 202 is fixedly connected to the annular groove 113, the gap between the annular groove 113 and the annular side wall 202 can be filled with an adsorbent material to adsorb the leaked part of the working fluid.

[0040] Please read next Figure 6 and Figure 7As shown, it is a second embodiment of the liquid cooling head structure of the utility model, and the main difference between it and the first embodiment is that it also includes a sealing rubber ring 50. Specifically, a receiving groove 2021 is formed at the end of the annular side wall 202, and the sealing rubber ring 50 is received in the receiving groove 2021 and elastically abuts between the substrate 11 and the annular side wall 202. In this embodiment, the receiving groove 2021 is formed on the bottom surface of the end of the annular side wall 202, and the sealing rubber ring 50 elastically abuts on the bottom surface of the receiving groove 2021 and the annular groove 113, but the utility model is not limited to this. For example, the receiving groove 2021 can also be formed on the side wall of the end of the annular side wall 202, and the sealing rubber ring 50 elastically abuts on the inner wall of the receiving groove 2021 and the annular groove 113. Thereby, the sealing between the base 10 and the upper shell 20 can be further enhanced, so as to achieve a better anti-leakage effect.

[0041] For further explanation, see Figures 2 to 3 As shown, the upper shell 20 has a partition 203, a diverter groove 25 and a confluence groove 26. The lower bonding surface 201 is located at the bottom of the upper shell 20 and is attached to the side of each heat sink fin 12 away from the substrate 11 (i.e., the top of each heat sink fin 12). The diverter groove 25 is formed on the lower bonding surface 201 and is connected to the liquid inlet 22. The confluence groove 26 is formed on the lower bonding surface 201 and is connected to the liquid outlet 23. The partition 203 extends from the lower bonding surface 201 of the upper shell 20. The partition 203 is parallel to each heat sink fin 12, and the partition 203 is located between the diverter groove 25 and the confluence groove 26 and is perpendicular to the diverter groove 25 and the confluence groove 26. The partition 203 separates each heat sink fin 12 into the aforementioned plurality of liquid inlet fins 121 and the aforementioned plurality of liquid outlet fins 122. The shunt groove 25 is located at the center of each liquid inlet fin 121, and the confluence groove 26 is located at the center of each liquid outlet fin 122. In this way, the working fluid passing through the liquid inlet 22 from the liquid inlet joint 41 can be diverted at the shunt groove 25 and enter the liquid inlet heat dissipation channels between the liquid inlet fins 121 from the center, so as to flow toward the two ends of each liquid inlet heat dissipation channel and absorb the heat energy of each liquid inlet fin 121, then flow into the liquid outlet heat dissipation channels between the liquid outlet fins 122 from the two ends of each liquid outlet heat dissipation channel and absorb the heat energy of each liquid outlet fin 122, and finally converge at the confluence groove 26 at the center of each liquid outlet fin 122 and leave from the liquid outlet joint 42 through the liquid outlet 23.

[0042] Furthermore, the substrate 11 has a groove 14. The groove 14 is formed on the upper surface 111, and the groove 14 is parallel to each heat dissipation fin 12 and is located between each liquid inlet fin 121 and each liquid outlet fin 122. The end of the partition 203 is fixed in the groove 14 to prevent the working fluid from flowing between the liquid inlet fin 121 and the liquid outlet fin 122 and affecting the overall fluidity. It is worth noting that the length of the groove 14 and the partition 203 are slightly longer than the length of each heat dissipation fin 12, which can also effectively ensure that the working fluid will not flow between the liquid inlet fin 121 and the liquid outlet fin 122, but can only enter each liquid outlet heat dissipation channel after flowing out of each liquid inlet heat dissipation channel. Furthermore, in this embodiment, the number and area of ​​each liquid inlet fin 121 are greater than the number and area of ​​each liquid outlet fin 122, but the utility model is not limited to this.

[0043] For special instructions, please refer to Figures 1 to 4 As shown, the liquid cooling head structure of the present invention further includes a plurality of fixing members 60. Each fixing member 60 is used to position the liquid detection sensing cable 32 of the liquid detection sensor 30 in the liquid collecting tank 24 without moving. In the present embodiment, each fixing member 60 is welded and fixed on the wall 13 of the base in the form of a metal spring, so that the liquid detection sensing cable 32 is elastically clamped by the elastic force of the metal spring itself, but the present invention is not limited to this. For example, each fixing member 60 can also be a buckle or a lock hook set on the base, and people with general knowledge in this field should be able to change the form of the fixing member 60 by themselves.

[0044] The liquid cooling head structure of the present invention is provided with a wall 13 surrounding the upper shell 20 on the upper surface 111 of the substrate 11, and a liquid collecting groove 24 is formed by the upper surface 111, the inner periphery of the wall 13 and the outer periphery of the upper shell 20. Therefore, when the working fluid leaks, it can be accumulated in the liquid collecting groove 24 instead of flowing to the outside of the liquid cooling head structure, thereby effectively avoiding the problem of damage to electronic components in the external environment due to the outflow of the working fluid. In addition, by providing a liquid detection sensing cable 32 surrounding the upper shell 20 in the liquid collecting groove 24, the user can also know the leakage of the working fluid in the first time, so as to deal with it as soon as possible.

[0045] In summary, the utility model has industrial applicability, novelty and progress, and the aforementioned contents are intended to enable people with ordinary knowledge in the field to clearly understand the technical content of the utility model and implement it accordingly, and are not intended to limit the scope of patent protection of the utility model. In addition, the utility model can of course have other unlisted embodiments. Without departing from the spirit and essence of the utility model, technicians familiar with the field should be able to evolve various corresponding changes and deformations based on the utility model, but these corresponding changes and deformations should all fall within the scope of protection of the patent applied for the utility model.

Claims

1. A liquid cooling head structure for a working fluid to flow through, characterized in that: The liquid cooling head structure comprises: a base (10) comprising a substrate (11), a plurality of heat dissipation fins (12) and a surrounding wall (13); the substrate (11) has an upper surface (111), each of the heat dissipation fins (12) is arranged in parallel on the upper surface (111), and the surrounding wall (13) is arranged on the upper surface (111) and surrounds each of the heat dissipation fins (12); an upper shell (20) which is fixedly coupled to the base (10) to form a chamber (21) between the upper surface (111) and the upper shell (20); the upper shell (20) has a liquid inlet (22) and a liquid outlet (23) connected to the chamber (21); each of the heat dissipation fins (12) is accommodated in the chamber (21); the upper surface (111), the inner periphery of the enclosure wall (13) and the outer periphery of the upper shell (20) are jointly formed to form a liquid collecting tank (24); and a liquid detection sensing cable (32), a portion of which surrounds the upper shell (20) and is disposed in the liquid collecting tank (24); The working fluid flows into the chamber (21) from the liquid inlet (22) and flows out through the liquid outlet (23). When the working fluid leaks from between the base (10) and the upper shell (20) toward the outside of the chamber (21), the leaked working fluid accumulates in the liquid collecting tank (24) and is detected by the liquid detection sensing cable (32).

2. The liquid cooling head structure according to claim 1, characterized in that: The enclosure wall (13) is rectangular, circular, elliptical, polygonal or irregular in shape.

3. The liquid cooling head structure according to claim 1, characterized in that: At least a portion of the outer periphery of the surrounding wall (13) is flush with the outer periphery of the base plate (11).

4. The liquid cooling head structure according to claim 1, characterized in that: The base plate (11) has an annular groove (113) formed on the upper surface (111). The annular groove (113) surrounds each of the heat dissipation fins (12) and is located between the surrounding wall (13) and each of the heat dissipation fins (12).

5. The liquid cooling head structure according to claim 4, characterized in that: The upper shell (20) has a lower fitting surface (201) and an annular side wall (202). The annular side wall (202) extends from the periphery of the lower fitting surface (201). The end of the annular side wall (202) is fixedly connected to the annular groove (113).

6. The liquid cooling head structure according to claim 5, characterized in that: It also includes a sealing rubber ring (50). A receiving groove (2021) is formed at the end of the annular side wall (202). The sealing rubber ring (50) is received in the receiving groove (2021) and elastically abuts between the base plate (11) and the annular side wall (202).

7. The liquid cooling head structure according to claim 1, characterized in that: The upper shell (20) has a lower bonding surface (201), a diverter groove (25) and a confluence groove (26); the lower bonding surface (201) is attached to a side of each heat dissipation fin (12) away from the substrate (11); the diverter groove (25) is formed on the lower bonding surface (201) and connected to the liquid inlet (22); and the confluence groove (26) is formed on the lower bonding surface (201) and connected to the liquid outlet (23).

8. The liquid cooling head structure according to claim 7, characterized in that: The upper shell (20) has a partition (203) extending from the lower bonding surface (201). The partition (203) is parallel to each of the heat dissipation fins (12) and is located between the diversion groove (25) and the confluence groove (26).

9. The liquid cooling head structure according to claim 8, characterized in that: The partition (203) separates the heat dissipation fins (12) into a plurality of liquid inlet fins (121) and a plurality of liquid outlet fins (122); the diversion groove (25) is located at the center of the liquid inlet fins (121); and the confluence groove (26) is located at the center of the liquid outlet fins (122).

10. The liquid cooling head structure according to claim 8, characterized in that: The substrate (11) has a groove (14) formed on the upper surface (111), and the end of the partition (203) is fixed in the groove (14).

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