A heat dissipation device integrating air-cooled fins and liquid-cooled plates

Abstract

The application discloses a kind of air-cooled fin and liquid cooling plate integration heat dissipation device, the device includes, including liquid cooling unit and fixed installation on liquid cooling unit air-cooled unit, liquid cooling unit includes liquid cooling plate main body and the liquid cooling flow passage opened in liquid cooling plate main body inside, liquid cooling flow passage includes respectively setting in liquid cooling plate main body same side two ends liquid inlet channel and liquid outlet channel, the middle part of liquid cooling plate main body is provided with multiple liquid cooling chamber, two rows of liquid cooling chamber are provided with the shunt passage connected with liquid inlet channel between, shunt passage and liquid cooling chamber between movably set with flow piece, in use, the arrangement scheme of liquid cooling plate main body+air-cooled fin is used, improves heat dissipation effect, and can effectively avoid the leakage situation caused by external multiple refrigerant pipeline to appear, and by flow piece can be automatically adjusted according to the temperature change in corresponding liquid cooling chamber Sickle effect, according to the refrigerant flux of heat dissipation demand automatically adjusted, reach self-adapting regulation effect.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation technology for electronic components, and in particular to an integrated heat dissipation device combining air-cooled fins and a liquid-cooled plate. Background Technology

[0002] As the performance of electronic components such as GPUs or CPUs continues to improve, their power density continues to increase, and traditional heat dissipation solutions are no longer sufficient to meet the demands.

[0003] The drawbacks of pure liquid cooling solutions are that they rely on complex external piping to connect the cooling circuit, resulting in numerous piping interfaces and difficulties in sealing. Long-term operation may lead to the risk of coolant leakage, causing short circuit damage to the equipment. Furthermore, the single liquid cooling structure has a slow heat dissipation response to local high-heat areas and cannot quickly balance the surface temperature of components.

[0004] The drawbacks of a pure air-cooling solution are that it relies on multiple high-speed fans in conjunction with fins for heat dissipation. The large number of fans and their high speed result in loud operating noise, typically exceeding 55dB. At the same time, the heat conduction path between the fins and the components is long, resulting in low heat dissipation efficiency and making it difficult to handle high heat dissipation components of 150W or more.

[0005] Existing composite heat dissipation solutions have shortcomings: In some liquid-cooled + air-cooled split devices, the fins are fixed to the liquid cooling plate with bolts or glue, resulting in thermal gaps and increased thermal resistance. Furthermore, for multi-chip heat dissipation solutions, the distributed layout of "multiple liquid cooling plates + independent fins" is often adopted, which results in complex and intertwined piping, poor system stability, and an increase in leakage risk of more than 30%. In addition, during the use of multiple chips, each chip has different heat generation conditions depending on the processing content and actual power, and traditional heat dissipation solutions cannot effectively target heat exchange for different heat generation levels.

[0006] In summary, existing technologies suffer from problems such as "high leakage risk, low heat dissipation efficiency, poor fin compatibility, and messy multi-chip layout," and there is an urgent need for a composite heat dissipation solution that combines efficient heat dissipation, structural stability, and flexible adaptability. Summary of the Invention

[0007] The purpose of this invention is to provide an integrated heat dissipation device combining air-cooled fins and liquid-cooled plates to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an integrated heat dissipation device combining air-cooled fins and a liquid-cooled plate, comprising a liquid-cooling unit and an air-cooling unit fixedly installed on the liquid-cooling unit. The liquid-cooling unit includes a liquid-cooled plate body and a liquid-cooled flow channel formed inside the liquid-cooled plate body. The liquid-cooled flow channel includes an inlet channel and an outlet channel respectively disposed at both ends on the same side of the liquid-cooled plate body. A plurality of liquid-cooled chambers are disposed in the middle of the liquid-cooled plate body. The liquid-cooled chambers are arranged in two rows. A diversion channel connected to the inlet channel is disposed between the two rows of liquid-cooled chambers. A water inlet is disposed between the liquid-cooled chamber and the diversion channel. A guide groove is formed on the side of the water inlet near the inlet channel, and a flow-blocking groove is formed on the side of the water inlet away from the inlet channel, so that the fluid entering the diversion channel flows along the guide groove to the flow-blocking groove and then enters the water inlet.

[0009] Preferably, a flow-blocking component is movably provided on the flow guide channel, and the flow rate of the fluid entering the inlet is adjusted by changing the distance of the flow-blocking component extending into the flow distribution channel.

[0010] Preferably, a flow-blocking component is movably provided on the flow guide channel, and the flow rate of the fluid entering the inlet is adjusted by changing the distance of the flow-blocking component extending into the flow distribution channel.

[0011] Preferably, the flow-blocking component includes a baffle plate slidably disposed on the side wall of the flow guide channel. A cavity is formed on the inner side of the flow guide channel. One end of the cavity extends inward along the side wall of the liquid-cooled chamber, and a gas storage bag is glued and fixed in the cavity. The gas storage bag is filled with liquefied petroleum gas. The other end of the gas storage bag extends to the opening of the cavity and is fixedly connected to the baffle plate, so that after the liquefied petroleum gas exchanges heat with the liquid-cooled chamber, the outer end of the gas storage bag expands and pushes the baffle plate to slide along the flow guide channel into the diversion channel.

[0012] Preferably, the end of the diversion channel is provided with an arc-shaped flow guide recess, the two ends of which are directly opposite the two sets of liquid cooling chambers at the end, so that the fluid at the end of the diversion channel is diverted to the liquid cooling chambers on both sides along the arc-shaped flow guide recess, thereby avoiding the generation of turbulent flow.

[0013] Preferably, a reflux channel is provided on the opposite side of each of the two rows of liquid-cooled chambers, and a water outlet connected to the reflux channel is provided on the side of the liquid-cooled chamber. Both sets of reflux channels are connected to the liquid outlet channel. The set of reflux channels closer to the liquid outlet channel is in the shape of an "I" and the set of reflux channels farther away from the liquid outlet channel is in the shape of an "L". The ends of the two sets of liquid outlet channels that are connected are perpendicular to each other.

[0014] Preferably, a guide portion is integrally formed on the side wall of one end where the two sets of liquid outlet channels meet. One side of the guide portion is inclined outward, and the other side of the guide portion is arc-shaped, so that the fluid in the two sets of liquid outlet channels is guided into the liquid outlet channel in parallel, thereby avoiding turbulence.

[0015] Preferably, the interior of the liquid cooling chamber is provided with a heat exchange plate, which is formed by bending a single flat plate into a continuous "S" shape, so that multiple independent heat exchange channels are formed between the heat exchange plate and the liquid cooling chamber.

[0016] Preferably, one side of the liquid cooling plate body is fixedly provided with positioning protrusions that are respectively facing the plurality of liquid cooling chambers, and the other side of the liquid cooling plate body is fixedly welded with a sealing cover plate. The sealing cover plate has two sets of connection ports that are respectively facing the liquid inlet channel and the liquid outlet channel. The air cooling unit is fixedly welded to the sealing cover plate, and a refrigerant connector is fixedly provided at the top of the connection port.

[0017] Preferably, the air-cooled unit includes air-cooled fins and a heat-conducting contact plate integrally formed on the bottom of the air-cooled fins. The heat-conducting contact plate is welded to the sealing cover plate by vacuum brazing, and the refrigerant connector is integrally formed on the heat-conducting contact plate.

[0018] Preferably, the air-cooling unit further includes a variable frequency fan, which is disposed on the top of the air-cooling fins, and the heat-conducting contact plate has an integrally formed screw fixing position for assembling the variable frequency fan.

[0019] The technical effects and advantages of this invention are as follows:

[0020] 1. This integrated heat dissipation device combining air-cooled fins and liquid-cooled plates adopts a liquid-cooled plate body + air-cooled fins arrangement. The air-cooled fins are installed on the liquid-cooled plate body using vacuum brazing technology. The liquid-cooled plate body is designed with liquid cooling channels inside. By designing corresponding liquid cooling chambers on the liquid cooling channels according to the number of heat-generating units, the synchronous liquid cooling heat dissipation effect of multiple heat-generating units can be achieved. The untreated heat from the liquid cooling is conducted to the air-cooled fins for air heat exchange, thereby improving the heat dissipation effect and effectively avoiding leakage caused by external multiple refrigerant pipes.

[0021] 2. This integrated air-cooled fin and liquid-cooled plate heat dissipation device features guide channels and flow-blocking channels at the connection points between multiple liquid-cooled chambers and the distribution channels at the front end. This allows fluid to smoothly enter the front-end liquid-cooled chambers. Furthermore, by designing an air-storage bladder, liquefied petroleum gas is pre-filled inside the bladder. The bladder extends along the side wall of the liquid-cooled chamber. When the heating unit directly opposite the liquid-cooled chamber is in a high-temperature state, the liquefied petroleum gas exchanges heat with the liquid-cooled chamber, causing the outer end of the bladder to expand and push the baffle plate along the guide channels into the distribution channels. This increases the flow-blocking effect on the distribution channels. When the temperature of the liquid-cooled chamber decreases, the flow-blocking effect decreases, thus automatically adjusting the refrigerant flow according to heat dissipation requirements to achieve an adaptive adjustment effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the top of the entire invention;

[0023] Figure 2 This is a schematic diagram of the overall bottom of the present invention;

[0024] Figure 3 This is a schematic diagram of the outer surface of the air-cooled fins of the present invention;

[0025] Figure 4 This is an exploded view of the overall top structure of the present invention;

[0026] Figure 5 This is an exploded view of the internal structure of the liquid cooling plate body of the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of the liquid cooling plate body of the present invention;

[0028] Figure 7 This is a top view of the interior of the liquid cooling plate body of the present invention;

[0029] Figure 8 This is a schematic diagram of the outer surface structure of the heat exchange plate of the present invention;

[0030] Figure 9 This is a cross-sectional view of the internal structure of the liquid cooling chamber of the present invention;

[0031] Figure 10 This is an exploded view of the internal structure of the cavity in this invention.

[0032] In the diagram: 1. Liquid cooling unit; 11. Liquid cooling plate body; 12. Positioning protrusion; 13. Refrigerant connector; 14. Sealing cover; 15. Connection port; 16. Liquid cooling channel; 161. Liquid inlet channel; 162. Liquid outlet channel; 163. Diversion channel; 164. Liquid cooling chamber; 1642. Water inlet; 1643. Water outlet; 1644. Flow guide groove; 1645. Flow obstruction groove; 1646. Baffle plate; 1647. Air storage bag; 1648. Cavity; 165. Return channel; 166. Guide section; 167. Arc-shaped flow guide recess; 17. Heat exchange plate; 172. Heat exchange channel; 2. Air cooling unit; 21. Thermal contact plate; 22. Air cooling fins; 23. Screw fixing position; 24. Variable frequency fan. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0034] This invention provides, for example Figures 1-10 The diagram illustrates an integrated heat dissipation device combining air-cooled fins and a liquid-cooled plate. It includes a liquid-cooling unit 1 and an air-cooling unit 2 fixedly mounted on the liquid-cooling unit 1. The liquid-cooling unit 1 includes a liquid-cooling plate body 11 and liquid-cooling channels 16 formed inside the liquid-cooling plate body 11. The liquid-cooling channels 16 include an inlet channel 161 and an outlet channel 162 respectively located at both ends of the same side of the liquid-cooling plate body 11. A plurality of liquid-cooling chambers 164 are arranged in two rows in the middle of the liquid-cooling plate body 11. A diversion channel 163 connected to the liquid inlet channel 161 is provided between the cold chambers 164. A water inlet 1642 is provided between the liquid cooling chambers 164 and the diversion channel 163. A guide groove 1644 is provided on the side of the water inlet 1642 near the liquid inlet channel 161, and a flow blocking groove 1645 is provided on the side of the water inlet 1642 away from the liquid inlet channel 161, so that the fluid entering the diversion channel 163 flows along the guide groove 1644 to the flow blocking groove 1645 and then enters the water inlet 1642.

[0035] A flow-blocking component is movably installed on the flow guide channel 1644. By changing the distance that the flow-blocking component extends into the flow distribution channel 163, the flow rate of the fluid entering the inlet 1642 can be adjusted.

[0036] A flow-blocking component is movably installed on the flow guide channel 1644. By changing the distance that the flow-blocking component extends into the flow distribution channel 163, the flow rate of the fluid entering the inlet 1642 can be adjusted.

[0037] The flow-blocking component includes a baffle plate 1646 slidably disposed on the side wall of the flow guide 1644. A cavity 1648 is formed on the inner side of the flow guide 1644. One end of the cavity 1648 extends inward along the side wall of the liquid-cooled chamber 164, and a gas storage bag 1647 is glued and fixed in the cavity 1648. The gas storage bag 1647 is filled with liquefied petroleum gas. The other end of the gas storage bag 1647 extends to the opening of the cavity 1648 and is fixedly connected to the baffle plate 1646. This allows the liquefied petroleum gas to exchange heat with the liquid-cooled chamber 164, causing the outer end of the gas storage bag 1647 to expand and push the baffle plate 1646 to slide along the flow guide 1644 into the diversion channel 163.

[0038] The end of the diversion channel 163 is provided with an arc-shaped flow guide recess 167. The two ends of the arc-shaped flow guide recess 167 are directly opposite the two sets of liquid cooling chambers 164 at the end, so that the fluid at the end of the diversion channel 163 is diverted to the liquid cooling chambers 164 on both sides along the arc-shaped flow guide recess 167, thereby avoiding the generation of turbulent flow.

[0039] Two rows of liquid-cooled chambers 164 are provided with reflux channels 165 on opposite sides, and the side of the liquid-cooled chambers 164 is provided with water outlets 1643 connected to the reflux channels 165. Both sets of reflux channels 165 are connected to the liquid outlet channels 162. The set of reflux channels 165 closer to the liquid outlet channels 162 is in the shape of an "I" and the set of reflux channels 165 farther away from the liquid outlet channels 162 is in the shape of an "L". The ends of the two sets of liquid outlet channels 162 that are connected are perpendicular to each other.

[0040] A guide portion 166 is integrally formed on the side wall of one end where the two sets of liquid outlet channels 162 are connected. One side of the guide portion 166 is inclined outward, and the other side of the guide portion 166 is arc-shaped, so that the fluid in the two sets of liquid outlet channels 162 is guided into the liquid outlet channel 162 in parallel, thereby avoiding turbulence.

[0041] The liquid cooling chamber 164 is equipped with a heat exchange plate 17. The heat exchange plate 17 is formed by bending a whole flat plate into a continuous "S" shape, so that multiple independent heat exchange channels 172 are formed between the heat exchange plate 17 and the liquid cooling chamber 164.

[0042] One side of the liquid cooling plate body 11 is fixedly provided with positioning protrusions 12 that are respectively facing multiple liquid cooling chambers 164. The other side of the liquid cooling plate body 11 is fixedly welded with a sealing cover plate 14. The sealing cover plate 14 has two sets of connection ports 15 that are respectively facing the liquid inlet channel 161 and the liquid outlet channel 162. The air-cooled unit 2 is fixedly welded to the sealing cover plate 14, and a refrigerant connector 13 is fixedly provided on the top of the connection port 15.

[0043] Working principle: This device consists of a liquid-cooled plate body 11, with multiple air-cooled fins 22 fixed to the top of the liquid-cooled plate body 11 by vacuum brazing. Inside the liquid-cooled plate body 11, a liquid-cooled flow channel 16 is designed. The liquid-cooled flow channel 16 has multiple liquid-cooled chambers 164 designed according to the number of heating units for heat exchange with the heating units. The multiple liquid-cooled chambers 164 are then connected to the liquid inlet channel 161 through the diversion channel 163. The multiple liquid-cooled chambers 164 are connected to the liquid outlet channel 162 through the return channels 165 on both sides, so as to realize the circulation of coolant through the multiple liquid-cooled chambers 164, while dissipating heat for the multiple heating units. In the case of insufficient heat exchange by liquid cooling, excess heat is conducted to the air-cooled fins 22 for heat exchange with the outside air, realizing a combination of "liquid cooling + air cooling".

[0044] In the design of the liquid cooling channel 16, guide channels 1644 and flow-blocking channels 1645 are respectively set at the connection points between the multiple liquid cooling chambers 164 at the front end and the diversion channel 163. When the fluid flows along the diversion channel 163, the guide channels 1644 guide the fluid to the flow-blocking channels 1645. Then, the flow-blocking channels 1645 tilt inwards towards the liquid cooling chambers 164, allowing the fluid to be guided along the inlet 1642 into the liquid cooling chambers 164. This ensures that the fluid can smoothly enter the front liquid cooling chambers 164. Furthermore, by designing a gas storage bladder 1647, liquefied petroleum gas is pre-filled inside the gas storage bladder 1647. The gas storage bladder 1647 extends along the side wall of the liquid cooling chamber 164, so that when the liquid cooling chamber 164 is filled with liquefied petroleum gas... When the heating unit is in a high-heat state, the internal temperature of the liquid-cooled chamber 164 rises. At this time, the heat is conducted to the gas storage bag 1647, so that the liquefied petroleum gas exchanges heat with the liquid-cooled chamber 164. The outer end of the gas storage bag 1647 expands and pushes the baffle plate 1646 to slide along the guide groove 1644 into the diversion channel 163, thereby increasing the interception effect on the diversion channel 163 and guiding more coolant to flow through the liquid-cooled chamber 164. When the temperature of the liquid-cooled chamber 164 drops, the gas storage bag 1647 contracts. At this time, the baffle plate 1646 contracts inward, thereby reducing the interception effect and reducing the amount of refrigerant flowing through the liquid-cooled chamber 164. This achieves automatic adjustment of the refrigerant flow according to the heat dissipation demand, thus achieving an adaptive adjustment effect.

[0045] At the very end of the diversion channel 163, an arc-shaped guide recess 167 is provided, allowing the refrigerant at the very end of the diversion channel 163 to be guided into the two sets of liquid-cooled chambers 164 at the very end along both ends of the arc-shaped guide recess 167. This avoids the generation of turbulent flow, which would affect the fluid flow rate. Furthermore, when the refrigerant flows back to the liquid outlet channel 162 through the two return channels 165, the two originally perpendicular fluid streams are guided into a parallel state and merge into the liquid outlet channel 162 under the action of the guide part 166, thereby avoiding turbulence.

[0046] Example 1: Refer to Appendix Figure 3 As shown, the air-cooled unit 2 includes air-cooled fins 22 and a heat-conducting contact plate 21 integrally formed on the bottom of the air-cooled fins 22. The heat-conducting contact plate 21 is welded to the sealing cover plate 14 by vacuum brazing process, and the refrigerant connector 13 is integrally formed on the heat-conducting contact plate 21.

[0047] In this embodiment, the air-cooled unit 2 uses only the air-cooled fins 22 to exchange heat naturally with the outside air, which is suitable for use in equipment with low heat generation.

[0048] Example 2: Refer to Appendix Figure 1 Appendix Figure 4 and attached Figure 5 As shown, the air-cooled unit 2 includes air-cooled fins 22 and a heat-conducting contact plate 21 integrally formed at the bottom of the air-cooled fins 22. The heat-conducting contact plate 21 is welded to the sealing cover plate 14 by vacuum brazing process. The refrigerant connector 13 is integrally formed on the heat-conducting contact plate 21. The air-cooled unit 2 also includes a variable frequency fan 24, which is set on the top of the air-cooled fins 22. The heat-conducting contact plate 21 has an integrally formed screw fixing station 23 for assembling the variable frequency fan 24.

[0049] In this embodiment, the air-cooled unit 2 adopts a scheme of air-cooled fins 22 + variable frequency fan 24 for forced air heat exchange. Furthermore, temperature can be monitored by installing temperature sensors on the air-cooled fins 22 or the liquid cooling plate body 11, and intelligent control connection can be achieved with the variable frequency fan 24. Thus, intelligent variable frequency heat dissipation is performed according to the actual temperature, which has the advantages of energy saving and good heat dissipation effect.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 heat dissipation device integrating air-cooled fins and a liquid-cooled plate, characterized in that, The system includes a liquid cooling unit (1) and an air-cooled unit (2) fixedly installed on the liquid cooling unit (1). The liquid cooling unit (1) includes a liquid cooling plate body (11) and a liquid cooling channel (16) opened inside the liquid cooling plate body (11). The liquid cooling channel (16) includes an inlet channel (161) and an outlet channel (162) respectively located at both ends of the same side of the liquid cooling plate body (11). A plurality of liquid cooling chambers (164) are provided in the middle of the liquid cooling plate body (11). The liquid cooling chambers (164) are arranged in two rows, and a connection is provided between the two rows of liquid cooling chambers (164). A diversion channel (163) is connected to the liquid inlet channel (161). An inlet (1642) is provided between the liquid cooling chamber (164) and the diversion channel (163). A guide groove (1644) is provided on the side of the inlet (1642) close to the liquid inlet channel (161), and a flow-blocking groove (1645) is provided on the side of the inlet (1642) away from the liquid inlet channel (161), so that the fluid entering the diversion channel (163) flows along the guide groove (1644) to the flow-blocking groove (1645) and then enters the inlet (1642). A flow-blocking component is movably provided on the flow guide channel (1644). By changing the distance of the flow-blocking component extending into the flow distribution channel (163), the flow rate of the fluid entering the inlet (1642) can be adjusted. The flow-blocking component includes a baffle plate (1646) slidably disposed on the side wall of the flow guide channel (1644). A cavity (1648) is opened on the inner side of the flow guide channel (1644). One end of the cavity (1648) extends inward along the side wall of the liquid cooling chamber (164), and a gas storage bag (1647) is glued and fixed in the cavity (1648). The gas storage bag (1647) is filled with liquefied petroleum gas. The other end of the gas storage bag (1647) extends to the opening of the cavity (1648) and is fixedly connected to the baffle plate (1646). This allows the liquefied petroleum gas to exchange heat with the liquid cooling chamber (164), causing the outer end of the gas storage bag (1647) to expand and push the baffle plate (1646) to slide along the flow guide channel (1644) into the diversion channel (163). The end of the diversion channel (163) is provided with an arc-shaped flow guide recess (167), the two ends of which are directly opposite the two sets of liquid cooling chambers (164) at the end, so that the fluid at the end of the diversion channel (163) is diverted to the liquid cooling chambers (164) on both sides along the arc-shaped flow guide recess (167), thereby avoiding the generation of turbulent flow.

2. The integrated heat dissipation device of air-cooled fins and liquid-cooled plate according to claim 1, characterized in that, Two rows of liquid cooling chambers (164) are provided with reflux channels (165) on opposite sides, and the side of the liquid cooling chamber (164) is provided with a water outlet (1643) connected to the reflux channel (165). Both sets of reflux channels (165) are connected to the liquid outlet channel (162). The set of reflux channels (165) closer to the liquid outlet channel (162) is in the shape of "I" and the set of reflux channels (165) farther away from the liquid outlet channel (162) is in the shape of "L". The ends of the two sets of liquid outlet channels (162) that are connected are perpendicular to each other.

3. The integrated heat dissipation device of air-cooled fins and liquid-cooled plate according to claim 2, characterized in that, A guide portion (166) is integrally formed on the side wall of one end where the two sets of liquid outlet channels (162) are connected. One side of the guide portion (166) is inclined outward and the other side of the guide portion (166) is arc-shaped, so that the fluid in the two sets of liquid outlet channels (162) is guided into the liquid outlet channel (162) in parallel, thereby avoiding turbulence.

4. The integrated heat dissipation device of air-cooled fins and liquid-cooled plate according to claim 3, characterized in that, The liquid cooling chamber (164) is equipped with a heat exchange plate (17), which is formed by bending a whole flat plate into a continuous "S" shape, so that multiple independent heat exchange channels (172) are formed between the heat exchange plate (17) and the liquid cooling chamber (164).

5. The integrated heat dissipation device of air-cooled fins and liquid-cooled plate according to claim 4, characterized in that, One side of the liquid cooling plate body (11) is fixedly provided with positioning protrusions (12) that are respectively facing the multiple liquid cooling chambers (164). The other side of the liquid cooling plate body (11) is fixedly welded with a sealing cover plate (14). The sealing cover plate (14) has two sets of connection ports (15) respectively facing the liquid inlet channel (161) and the liquid outlet channel (162). The air cooling unit (2) is fixedly welded to the sealing cover plate (14), and a refrigerant connector (13) is fixedly provided on the top of the connection port (15).

6. The integrated heat dissipation device of air-cooled fins and liquid-cooled plate according to claim 5, characterized in that, The air-cooled unit (2) includes air-cooled fins (22) and a heat-conducting contact plate (21) integrally formed on the bottom of the air-cooled fins (22). The heat-conducting contact plate (21) is welded to the sealing cover plate (14) by vacuum brazing process. The refrigerant connector (13) is integrally formed on the heat-conducting contact plate (21).

7. The integrated heat dissipation device of air-cooled fins and liquid-cooled plate according to claim 6, characterized in that, The air-cooled unit (2) also includes a variable frequency fan (24), which is located on the top of the air-cooled fins (22). The heat-conducting contact plate (21) has an integrally formed screw fixing station (23) for assembling the variable frequency fan (24).

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