Water-cooled heat dissipation device and water-cooled plate thereof

Abstract

The utility model relates to a water cooling type heat dissipation device and a water cooling plate thereof, the water cooling plate comprises a heat conduction seat, a first fin group and a second fin group, the first fin group is arranged on the heat conduction seat and comprises first fins, and a first branch flow channel is formed between any two adjacent first fins; the first fin group is arranged on the heat conducting seat, the second fin group is arranged on the heat conducting seat and located on one side of the first fin group, a main flow channel is formed between the first fin group and the second fin group, the second fin group comprises second fins, a second branch flow channel is formed between any two adjacent second fins, and the main flow channel is communicated with the first branch flow channel and the second branch flow channel; the first branch flow channel and the second branch flow channel are arranged in a staggered mode, and the width of the first branch flow channel and the width of the second branch flow channel are within 0.3 mm. Therefore, the time that the working fluid stays in the fluid cavity can be prolonged, and the heat exchange efficiency of the working fluid is further improved.

Description

Technical Field

[0001] This application relates to the technology of a water-cooled heat dissipation device, and more particularly to a water-cooled heat dissipation device and its water-cooling plate. Background Technology

[0002] With the advancement and development of technology, the graphics of various computer games are becoming more and more detailed, and the functions of computer-aided graphics software are becoming more and more powerful. When such software is running, it often puts the central processing unit and graphics chip processor under high load, which also leads to a lot of heat. If this heat cannot be effectively dissipated, it will at least cause a decrease in the performance of the central processing unit or graphics chip processor, and in severe cases, it may even cause damage to the central processing unit or graphics chip processor or a significant reduction in its lifespan.

[0003] To effectively reduce the operating temperature of heat-generating electronic components, the application of water-cooled heat dissipation devices is quite common. A water-cooled heat dissipation device mainly includes a water radiator, two water pipes, a water pump, and a water-cooled plate. The water radiator connects the water pump and the water-cooled plate through the water pipes, and the water-cooled plate is placed in contact with a heat-generating electronic component. The water pump drives the working fluid to flow onto the water radiator for heat dissipation, continuously circulating and cooling to quickly dissipate heat.

[0004] Existing water-cooled plates have the following problems in actual use: because the working fluid passes through each branch channel in a rapid manner, the heat energy that can be transferred to each fin is quite limited, which makes it impossible to effectively improve their heat dissipation performance.

[0005] In view of this, the applicant has devoted himself to researching and applying theoretical principles to address the shortcomings of the prior art, and has made every effort to solve the aforementioned problems, which has become the target of the applicant's improvement. Utility Model Content

[0006] One objective of this application is to provide a water-cooled heat dissipation device and its water-cooling plate, which can increase the time that the working fluid remains in the fluid chamber, thereby improving its heat exchange efficiency.

[0007] To achieve the above objectives, this application provides a water-cooled heat dissipation device, including a base, a water-cooling plate, and a liquid driving mechanism. The base has a receiving space and a heat exchange chamber, and a water pipe is provided between the receiving space and the heat exchange chamber for mutual communication. The water-cooling plate is connected to the base and located in the heat exchange chamber, and includes a heat-conducting base, an inner cover, a first fin group, and a second fin group. The inner cover corresponds to the heat-conducting base cover and forms a fluid chamber between the heat-conducting base and the inner cover. The first fin group and the second fin group are formed in the fluid chamber. The first fin group is disposed on the heat-conducting base and includes a plurality of first fins, each of which is spaced apart, and a first branch flow channel is formed between any two adjacent first fins. The second fin group... The assembly is mounted on the heat-conducting base and located on one side of the first fin assembly, forming a main flow channel between the first fin assembly and the second fin assembly. The second fin assembly includes a plurality of second fins, each of which is spaced apart, and a second branch flow channel is formed between any two adjacent second fins. The main flow channel connects each of the first branch flow channels and each of the second branch flow channels. The first branch flow channels and each of the second branch flow channels are staggered, and the width of each of the first branch flow channels and each of the second branch flow channels is within 0.3 mm. The liquid drive mechanism is connected to the base and located in the accommodating space. The liquid drive mechanism includes a housing and a rotor structure. The housing includes a cavity and a water outlet pipe communicating with the cavity. The rotor structure is installed in the cavity, and the water outlet pipe is communicating with the water supply pipe.

[0008] To achieve the above objectives, this application provides a water-cooled plate, including a heat-conducting base, a first fin group, and a second fin group. The first fin group is disposed on the heat-conducting base and includes a plurality of first fins, each of which is spaced apart, and a first branch flow channel is formed between any two adjacent first fins. The second fin group is disposed on the heat-conducting base and located on one side of the first fin group, and a main flow channel is formed between the first fin group and the second fin group. The second fin group includes a plurality of second fins, each of which is spaced apart, and a second branch flow channel is formed between any two adjacent second fins. The main flow channel connects each of the first branch flow channels and each of the second branch flow channels. The first branch flow channels and each of the second branch flow channels are staggered, and the width of each of the first branch flow channels and each of the second branch flow channels is less than 0.3 mm.

[0009] This application also has the following effects: by misaligning the fins of two adjacent fin groups, the thermal boundary layer of the working fluid is disrupted, resulting in turbulence and disturbance, thereby extending the time the working fluid stays in the fluid chamber and allowing for sufficient heat exchange with each fin, thus improving the overall heat dissipation performance. Attached Figure Description

[0010] Figure 1 This is a three-dimensional view of the water-cooled plate in this application.

[0011] Figure 2 This is a top view of the water-cooled plate in this application.

[0012] Figure 3 yes Figure 2 A magnified view of a local area.

[0013] Figure 4 This is a cross-sectional view of the water-cooled heat dissipation device assembly of this application.

[0014] Figure 5 This is a cross-sectional view of the water-cooled heat dissipation device of this application from another direction.

[0015] Figure 6 This is a top view of another embodiment of the water-cooled plate of this application.

[0016] Figure 7 yes Figure 6 A magnified view of a local area.

[0017] Figure 8 This is a cross-sectional view of another embodiment of the first fin group and the first fin group of this application.

[0018] Figure 9 This is a cross-sectional view of another embodiment of the first fin group and the first fin group of this application. Detailed Implementation

[0019] The detailed description and technical content of this application are illustrated below with reference to the accompanying drawings. However, the accompanying drawings are provided for reference and illustration only and are not intended to limit this application.

[0020] Please see Figures 1 to 5 As shown, this application provides a water-cooled heat dissipation device and its water-cooling plate, wherein the water-cooled heat dissipation device mainly includes a base 10, a water-cooling plate 20, a liquid driving mechanism 30 and other necessary devices and components.

[0021] Please refer to the following first. Figure 4 and Figure 5 As shown, the substrate 10 is generally rectangular and has a receiving space 11 and a heat exchange chamber 12. The receiving space 11 is formed in the upper part of the substrate 10, and the heat exchange chamber 12 is formed in the lower part of the substrate 10. The heat exchange chamber 12 is connected to a drain pipe (not shown in the figure). A water supply pipe 13 is provided between the receiving space 11 and the heat exchange chamber 12, and an annular groove 14 is provided around the water supply pipe 13.

[0022] Please refer to the following: Figures 1 to 3As shown, the water-cooled plate 20 is connected to the base 10 and located in the heat exchange chamber 12. The water-cooled plate 20 in this embodiment mainly includes a heat-conducting base 21, an inner cover 22, a first fin group 23, a second fin group 24 and a third fin group 25.

[0023] The heat-conducting base 21 can be made of a material with good thermal conductivity, such as copper, aluminum, magnesium or their alloys. The inner cover 22 corresponds to the cover of the heat-conducting base 21 and forms a fluid chamber 26 between the heat-conducting base 21 and the inner cover 22. The inner cover 22 is provided with an opening 221, which corresponds to the aforementioned water pipe 13.

[0024] The first fin group 23 is disposed within the aforementioned fluid chamber 26, and mainly comprises a plurality of first fins 231. Each first fin 231 is equally spaced, and a first branch flow channel 232 is formed between any two adjacent first fins 231. Each first branch flow channel 232 is within 0.3 mm, preferably between 0.1 mm and 0.3 mm.

[0025] The second fin group 24 is disposed within the aforementioned fluid chamber 26 and located on one side of the first fin group 23, forming a main flow channel 27 between the first fin group 23 and the second fin group 24. The second fin group 24 includes a plurality of second fins 241, which are equally spaced, and a second branch flow channel 242 is formed between any two adjacent second fins 241. Each second branch flow channel 242 and each first branch flow channel 232 are interconnected with the main flow channel 27. The first branch flow channels 232 and the second branch flow channels 242 are staggered. Each second branch flow channel 242 is within 0.3 mm, preferably between 0.1 mm and 0.3 mm.

[0026] The third fin group 25 is disposed within the aforementioned fluid chamber 26 and located on the side of the first fin group 23 facing away from the second fin group 24. Another main flow channel 28 is formed between the first fin group 23 and the third fin group 25. The third fin group 25 includes a plurality of third fins 251, which are equally spaced, and a third branch flow channel 252 is formed between any two adjacent third fins 251. Each third branch flow channel 252 is interconnected with the other main flow channel 28. Each third branch flow channel 252 is staggered from each first branch flow channel 232, and is aligned with each second branch flow channel 242. Each third branch flow channel 252 is less than 0.3 mm, preferably between 0.1 mm and 0.3 mm.

[0027] During manufacturing, the aforementioned main channels 25 and 28 are first machined on the heat-conducting seat 21 using a cutting tool. Then, the process is carried out by using a three-jaw or more cutting tool in an alternating manner and by scraping. Different feed rates can be used to form discontinuous fins, continuous fins, or oblique fins, thereby simultaneously manufacturing each first branch channel 232, each second branch channel 242, and each third branch channel 252. This greatly simplifies the machining process and reduces machining costs.

[0028] The liquid drive mechanism 30 is connected to the base 10 and located within the accommodating space 11. The liquid drive mechanism 30 mainly includes a housing 31 and a rotor structure 32. The housing 31 includes a cavity 311, a water outlet pipe 312 communicating with the cavity 311, and a water inlet pipe (not shown) communicating with the cavity 311. The water outlet pipe 312 is disposed in the annular groove 14 and communicates with the water supply pipe 13, wherein the water outlet pipe 312 and the water supply pipe 13 are sealed together by a sealing component 33. The rotor structure 32 is installed in the cavity 311 and mainly includes an impeller, a rotor, and a stator. The cavity has an upper chamber and a lower chamber formed below the upper chamber. The stator is disposed in the upper chamber, and the rotor and impeller are disposed in the lower chamber.

[0029] In use, the working fluid is driven by the liquid drive mechanism 30 and forcefully injected from its outlet pipe 312 through the water supply pipe 13 and the opening 221 of the inner cover 22 into the fluid chamber 26 of the water-cooled plate 20. After passing through the main channel 27, it flows through each first branch channel 232 and each second branch channel 242 respectively. Since each first branch channel 232 and each second branch channel 242 is staggered, the thermal boundary layer of the working fluid is destroyed, resulting in turbulence and disturbance. This prolongs the time that the working fluid stays in the fluid chamber 26 and allows for sufficient heat exchange with each first fin 231 and each second fin 241, thereby improving the overall heat dissipation efficiency.

[0030] Please see Figure 6 and Figure 7 As shown, the difference between this embodiment and the first embodiment described above is that the water-cooled plate 20 has only a first fin group 23 and a second fin group 24, wherein each first branch flow channel 232 of the first fin group 23 and each second branch flow channel 242 of the second fin group 24 are staggered, that is, each second fin 241 of the second fin group 24 is respectively configured to each first branch flow channel 232 located in the first fin group 23; thus, it can be applied to heat sources with small heat dissipation.

[0031] Please see Figure 8As shown, the difference between this embodiment and the previous embodiments is that each first fin 231 is inclined and has a first inclination angle A1, and the second fin 241 is also inclined and has a second inclination angle A2, wherein each first inclination angle A1 is greater than each second inclination angle A2.

[0032] Please see Figure 9 As shown, the difference between this embodiment and the previous embodiments is that each first branch channel 232 has a first depth H1 and the second branch channel 242 has a second depth H2, wherein each first depth H1 is greater than each second depth H2.

[0033] The above description is merely a preferred embodiment of this application and is not intended to limit the patent scope of this application. Other equivalent variations that utilize the patent spirit of this application should all fall within the patent scope of this application.

[0034] Figure Labels

[0035] 10: Matrix

[0036] 11: Storage space

[0037] 12: Heat exchange chamber

[0038] 13: Water pipe

[0039] 14: Annular groove

[0040] 20, 20A: Water-cooled plate

[0041] 21: Heat-conducting seat

[0042] 22: Inner cover

[0043] 221: Opening

[0044] 23: First fin group

[0045] 231: First fin

[0046] 232: First branch flow channel

[0047] 24: Second fin group

[0048] 241: Second fin

[0049] 242: Second branch flow channel

[0050] 25: Third fin group

[0051] 251: Third fin

[0052] 252: Third branch flow channel

[0053] 26: Fluid Chamber

[0054] 27: Mainstream Road

[0055] 28: Another mainstream path

[0056] 30: Liquid-driven mechanism

[0057] 31: Shell

[0058] 311: Cavity

[0059] 312: Water outlet pipe

[0060] 32: Rotor Structure

[0061] 33: Sealing assembly

[0062] A1: First tilt angle

[0063] A2: Second tilt angle

[0064] H1: First Depth

[0065] H2: Second Depth

Claims

1. A water-cooled plate, characterized in that, include: One heat-conducting base; A first fin group is disposed on the heat-conducting base. The first fin group includes a plurality of first fins, each of which is spaced apart, and a first branch flow channel is formed between any two adjacent first fins; and A second fin group is disposed on the heat-conducting base and located on one side of the first fin group, and a main flow channel is formed between the first fin group and the second fin group. The second fin group includes a plurality of second fins, each second fin is spaced apart, and a second branch flow channel is formed between any two adjacent second fins. The main flow channel connects each first branch flow channel and each second branch flow channel. The first branch flow channel and the second branch flow channel are staggered, and the width of each first branch flow channel and the width of each second branch flow channel are within 0.3mm.

2. The water-cooled plate according to claim 1, characterized in that, Each of the first fins and each of the second fins is formed by a shovel-shaped process.

3. The water-cooled plate according to claim 1, characterized in that, The width of each of the first branch channels and each of the second branch channels is between 0.1 and 0.3 mm.

4. The water-cooled plate according to claim 1, characterized in that, Each of the first fins has a first tilt angle, and each of the second fins has a second tilt angle, wherein each of the first tilt angles is greater than each of the second tilt angles.

5. The water-cooled plate according to claim 1, further comprising a third fin group disposed on the heat-conducting base and located on the side of the first fin group facing away from the second fin group, and forming another main flow channel between the first fin group and the third fin group, the third fin group comprising a plurality of third branch flow channels, each of the third branch flow channels communicating with the other main flow channel, and each of the first branch flow channels and each of the third branch flow channels being staggered.

6. The water-cooled plate according to claim 5, characterized in that, Each of the third branch channels is aligned with each of the second branch channels.

7. The water-cooled plate according to claim 1, characterized in that, Each of the first branch channels has a first depth, and each of the second branch channels has a second depth, wherein each of the first depths is greater than each of the second depths.

8. A water-cooled heat dissipation device, characterized in that, include: A substrate having a receiving space and a heat exchange chamber, with a water pipe communicating with the receiving space and the heat exchange chamber; A water-cooled plate according to any one of claims 1 to 7, connected to the substrate and located in the heat exchange chamber, the water-cooled plate further comprising an inner cover corresponding to the heat-conducting seat cover, and forming a fluid chamber between the heat-conducting seat and the inner cover, wherein the first fin group and the second fin group are formed in the fluid chamber; A liquid drive mechanism is connected to the base and located in the accommodating space. The liquid drive mechanism includes a housing and a rotor structure. The housing includes a cavity and a water outlet pipe communicating with the cavity. The rotor structure is installed in the cavity, and the water outlet pipe is communicating with the water supply pipe.

9. The water-cooled heat dissipation device according to claim 8, characterized in that, The water supply pipe is provided with an annular groove around its perimeter, and the water outlet pipe is tightly connected to the annular groove through a sealing component.

10. The water-cooled heat dissipation device according to claim 8, characterized in that, The inner cover has an opening that connects to the water supply pipe.

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