Liquid cooling plate assembly

Abstract

A cold plate assembly includes a shell and a heat sink group. The shell includes an inner chamber, a first cooling section, a second cooling section spaced apart from the first cooling section, and a third cooling section located between the first and second cooling sections. The first cooling section includes an inlet with two opposing inner wall surfaces disposed as inlet arc surfaces, and the second cooling section includes an outlet with two opposing inner wall surfaces disposed as outlet arc surfaces. The heat sink group is located in the inner chamber.

Description

BACKGROUND OF THE DISCLOSURETechnical Field

[0001] The technical field relates to a water cooling radiator, and particularly to a liquid cooling plate assembly.Description of Related Art

[0002] A water cooling plate is usually designed with flow channels and heat dissipation fins to allow coolant to circulate through the flow channels and take away the heat. Furthermore, the design of the flow channels in the water cooling plate often affects the flow rate of the coolant and the heat dissipation efficiency. Additionally, the heat dissipation fins of the water cooling plate are mostly made of high-density metals (such as copper or aluminum alloys). Although the heat dissipation fins have better thermal conductivity, they result in a heavier overall weight, higher manufacturing costs, and make it difficult to achieve both lightweight and high-efficiency heat dissipation.

[0003] In this regard, the research motivation of the applicant of this disclosure is to effectively solve the shortcomings of the structure of flow channels and the design of heat dissipation fins of the water cooling plate, improve cooling performance, and achieve a lightweight structure.

[0004] In view of the above drawbacks, the inventor proposes this disclosure based on his expert knowledge and elaborate researches in order to solve the problems of related art.SUMMARY OF THE DISCLOSURE

[0005] This disclosure provides a liquid cooling plate assembly to increase the flow rate of the coolant and improve heat dissipation efficiency.

[0006] This disclosure is a liquid cooling plate assembly including a shell and a heat sink group. The shell includes an inner chamber, a first cooling section, a second cooling section spaced apart from the first cooling section, and a third cooling section located between the first and second cooling sections. The first cooling section includes an inlet with two opposing inner wall surfaces disposed as inlet arc surfaces, and the second cooling section includes an outlet with two opposing inner wall surfaces disposed as outlet arc surfaces. The heat sink group is located in the inner chamber.

[0007] This disclosure provides a liquid cooling plate assembly to achieve a lightweight structure and enhance cooling performance.

[0008] This disclosure is a liquid cooling plate assembly including a shell and a heat sink group. The shell includes an inner chamber, a first cooling section, a second cooling section, and a third cooling section located between the first cooling section and the second cooling section. The first cooling section defines a water inlet direction, and the second cooling section defines a water outlet direction. The heat sink group includes a first fin set disposed in the first cooling section and a second fin set disposed in the second cooling section. The first fin set includes a plurality of first fins arranged parallelly and spacedly, and the first fins define a first extension line extending parallel to the first fins. The second fin set includes a plurality of second fins arranged parallelly and spacedly, and the second fins define a second extension line extending parallel to the second fins. The first extension line is substantially parallel to the water inlet direction, and a first angle is defined between the second extension line and the water outlet direction.

[0009] In one embodiment of this disclosure, the first cooling section defines a water inlet direction. The heat sink group includes a first fin set disposed in the first cooling section, and the first fin set includes a plurality of first fins arranged parallelly and spacedly. The first fins define a first extension line extending parallel to the first fins, and the first extension line is substantially parallel to the water inlet direction.

[0010] In one embodiment of this disclosure, the second cooling section defines a water outlet direction. The heat sink group includes a second fin set disposed in the second cooling section, and the second fin set includes a plurality of second fins arranged parallelly and spacedly. The second fins define a second extension line extending in a direction parallel to the second fins, and a first angle is defined between the second extension line and the water outlet direction.

[0011] In one embodiment of this disclosure, the heat sink group includes a third fin set disposed on the downstream side of the first fin set, and the third fin set includes a plurality of third fins arranged parallelly and spacedly. The third fin set defines a third extension line extending in a direction parallel to the third fins, and a second angle is defined between the third extension line and the water inlet direction.

[0012] In one embodiment of this disclosure, the heat sink group includes a fourth fin set disposed on the upstream side of the second fin set, and the fourth fin set includes a plurality of fourth fins arranged parallelly and spacedly. The fourth fin set defines a fourth extension line extending in a direction parallel to the fourth fins, and a third angle is defined between the fourth extension line and the water outlet direction.

[0013] In one embodiment of this disclosure, a gap is maintained between the inner wall of the inner chamber and the second fin set, the third fin set, and the fourth fin set, respectively.

[0014] In one embodiment of this disclosure, the inner chamber includes a first chamber located in the first cooling section, a second chamber located in the second cooling section, and a third chamber located in the third cooling section. The height of the first chamber or the second chamber is greater than that of the third chamber.

[0015] In one embodiment of this disclosure, the shell includes a guiding ramp located on the first cooling section, and the guiding ramp is positioned in the first chamber and located on the upstream side of the first fin set.

[0016] In one embodiment of this disclosure, the first chamber has a first cross-sectional area perpendicular to a water flow direction, the second chamber has a second cross-sectional area perpendicular to the water flow direction, and the third chamber has a third cross-sectional area perpendicular to the water flow direction. The first cross-sectional area is greater than the third cross-sectional area, and the third cross-sectional area is greater than the second cross-sectional area.

[0017] In one embodiment of this disclosure, the shell includes a first shell plate and a second shell plate, and the inner chamber is structured by the first shell plate covering the second shell plate.

[0018] In one embodiment of this disclosure, the first shell plate or the second shell plate comprises a protrusion located on an outer surface thereof.

[0019] In one embodiment of this disclosure, an indentation is disposed on an inner wall of the first shell plate or the second shell plate.

[0020] In comparison with the related art, the shell of the liquid cooling plate assembly in the disclosure includes a first cooling section and a second cooling section. Two inner wall surfaces of the water inlet of the first cooling section, which are opposite to each other, are configured as arc surfaces, and two inner wall surfaces of the water outlet of the second cooling section, which are opposite to each other, are also configured as arc surfaces. Additionally, the flow channels of the shell are gradually narrowed from the first chamber toward the second and third chambers, thereby reducing the resistance of water and achieving the effect of improving the flow rate of the coolant and the heat dissipation efficiency. Furthermore, the heat sink group of this disclosure includes a first fin set disposed in the first cooling section, a second fin set disposed in the second cooling section, and a third fin set and a fourth fin set disposed in the third cooling section, wherein the second fin set, the third fin set, and the fourth fin set are respectively arranged at an angle relative to the water outlet direction, thereby achieving the objectives of lightweight and efficient heat dissipation to increase the practicality of use.BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The features of the disclosure believed to be novel are set forth with particularity in the appended claims. The disclosure itself, however, may be best understood by reference to the following detailed description of the disclosure, which describes a number of exemplary embodiments of the disclosure, taken in conjunction with the accompanying drawings, in which:

[0022] FIGS. 1 and 2 depict perspective schematic views from two sides of the liquid cooling plate assembly according to this disclosure.

[0023] FIG. 3 depicts a perspective exploded schematic view of the liquid cooling plate assembly according to this disclosure.

[0024] FIG. 4 depicts a cross-sectional view of the liquid cooling plate assembly according to this disclosure.

[0025] FIGS. 5 and 6 depict schematic views illustrating the operation of the liquid cooling plate assembly according to this disclosure.

[0026] FIG. 7 depicts a cross-sectional view of line 7-7 in FIG. 5.

[0027] FIG. 8 depicts a cross-sectional view of line 8-8 in FIG. 5.

[0028] FIG. 9 depicts a cross-sectional view of line 9-9 in FIG. 5.

[0029] FIG. 10 depicts a cross-sectional view of line 10-10 in FIG. 5.

[0030] FIG. 11 depicts a cross-sectional view of line 11-11 in FIG. 5.

[0031] FIGS. 12 and 13 depict two cross-sectional views of the liquid cooling plate assembly according to this disclosure.

[0032] FIGS. 14 and 15 depict two additional cross-sectional views of the inner chamber of the shell according to this disclosure.

[0033] FIG. 16 depicts a perspective schematic view of another embodiment of the liquid cooling plate assembly according to this disclosure.DETAILED DESCRIPTION

[0034] The technical contents of this disclosure will become apparent with the detailed description of embodiments accompanied with the illustration of related drawings as follows. It is intended that the embodiments and drawings disclosed herein are to be considered illustrative rather than restrictive.

[0035] Please refer to FIGS. 1 and 2, which depict perspective schematic views from two sides of the liquid cooling plate assembly according to this disclosure. The liquid cooling plate assembly 1 includes a shell 10 and a heat sink group 20. The shell 10 includes an inner chamber 100, a first cooling section 11, a second cooling section 12, and a third cooling section 13 located between the first cooling section 11 and the second cooling section 12. The first cooling section 11 includes an inlet 110 with two opposing inner wall surfaces disposed as inlet arc surfaces 111. The second cooling section 12 includes an outlet 120 with two opposing inner wall surfaces disposed as outlet arc surfaces 121. Additionally, the heat sink group 20 is disposed in the inner chamber 100 to constitute the liquid cooling plate assembly 1.

[0036] It should be noted that the inlet arc surfaces 111 and the outlet arc surfaces 121 refer to the inner wall surfaces of the shell 10 at the water inlet and water outlet locations, having a concave arc surface with a changing curvature.

[0037] In this embodiment, the shell 10 includes a first shell plate 101 and a second shell plate 102. The inner chamber 100 is structured by the first shell plate 101 covering the second shell plate 102 to accommodate the heat sink group 20. It is worth noting that the second shell plate 102 includes a plurality of locking plates 103 for fixing the liquid cooling plate assembly 1. Additionally, the shell 10 further includes an inlet pipe 14 and an outlet pipe 15. The inlet pipe 14 is inserted into the inlet 110, and the outlet pipe 15 is inserted into the outlet 120.

[0038] Please further refer to FIGS. 3 and 4, which depict a perspective exploded schematic view and a cross-sectional view of the liquid cooling plate assembly according to this disclosure. The shell 10 of the liquid cooling plate assembly 1 in this disclosure is constituted by a first shell plate 101 and a second shell plate 102 clamped together. The shell 10 includes a first cooling section 11, a second cooling section 12, and a third cooling section 13. Additionally, the inlet pipe 14 is inserted into the first cooling section 11, and the first cooling section 11 defines a water inlet direction 1100. The outlet pipe 15 is inserted into the second cooling section 12, and the second cooling section 12 defines a water outlet direction 1200. It should be noted that the third cooling section 13 of this disclosure is connected to the first cooling section 11 and the second cooling section 12. Moreover, the contour of the third cooling section 13 may be configured to be U-shaped or L-shaped, so that the outlet pipe 15 and the inlet pipe 14 are arranged parallelly or perpendicularly, but this is not limited thereto.

[0039] Furthermore, the heat sink group 20 includes a first fin set 21 disposed in the first cooling section 11 and a second fin set 22 disposed in the second cooling section 12. The first fin set 21 includes a plurality of first fins 211 arranged parallelly and spacedly. The first fin set 21 defines a first extension line 210 extending in a direction parallel to an extension direction of the first fins 211, and the first extension line 210 is substantially parallel to the water inlet direction 1100.

[0040] In this embodiment, the first fin set 21 includes a first sub-fin set 21a and a second sub-fin set 21b. The first sub-fin set 21a and the second sub-fin set 21b are connected parallelly and staggeredly to form a stepped surface 200. In some embodiments, the first fin set 21 may be a single fin set formed in one piece and does not have a stepped surface 200.

[0041] Additionally, the second fin set 22 includes a plurality of second fins 221 arranged parallelly and spacedly. The second fin set 22 defines a second extension line 220 extending in a direction parallel to an extension direction of the second fins 221, and a first angle A is defined between the second extension line 220 and the water outlet direction 1200. Furthermore, the first angle A may be arranged according to actual needs.

[0042] Specifically, the heat sink group 20 includes a third fin set 23 disposed on the downstream side of the first fin set 21. The third fin set 23 includes a plurality of third fins 231 arranged parallelly and spacedly. The third fin set 23 defines a third extension line 230 extending in a direction parallel to an extension direction of the third fins 231, and a second angle B is defined between the third extension line 230 and the water inlet direction 1100. Furthermore, the second angle B may be arranged according to actual needs.

[0043] Moreover, the heat sink group 20 includes a fourth fin set 24 disposed on the upstream side of the second fin set 22. The fourth fin set 24 includes a plurality of fourth fins 241 arranged parallelly and spacedly. The fourth fin set 24 defines a fourth extension line 240 extending in a direction parallel to an extension direction of the fourth fins 241, and a third angle C is defined between the fourth extension line 240 and the water outlet direction 1200. Furthermore, the third angle C may be arranged according to actual needs.

[0044] It should be noted that different gaps 201 are maintained between the inner wall of the inner chamber 100 and the second fin set 22, between the inner wall of the inner chamber 100 and the third fin set 23, and between the inner wall of the inner chamber 100 and the fourth fin set 24, respectively. Additionally, the first angle A, the second angle B, and the third angle C are all acute angles.

[0045] Please further refer to FIGS. 5 and 6, which depict schematic views illustrating the operation of the liquid cooling plate assembly according to this disclosure. The liquid cooling plate assembly 1 of this disclosure may dissipate heat for a plurality of heating elements 2, and the heating elements 2 may be attached to two outer surfaces of the shell 10 oppositely. The heat from the heating element 2 may be transferred to the heat sink group 20 in the inner chamber 100 through the shell 10. Additionally, an inlet pipe 14 and an outlet pipe 15 are disposed on the shell 10. The heat sink group 20 includes a first fin set 21, a second fin set 22, a third fin set 23, and a fourth fin set 24. Thus, the coolant flowing into the shell 10 may exchange heat with the heat sink group 20, thereby taking away the heat from the heat sink group 20 to achieve the effect of continuously dissipating heat from the heating element 2.

[0046] In this embodiment, a plurality of heating elements 2 are attached to the upper and lower surfaces of the shell 10, respectively. Moreover, the positions of the heating elements 2 in the shell 10 are substantially corresponding to the outer surfaces of the shell 10 where the heat sink group 20 is projected to, so as to shorten the conduction distance and improve the heat dissipation efficiency.

[0047] Please refer to FIGS. 7-9, which depict a cross-sectional view of line 7-7, a cross-sectional view of line 8-8, and a cross-sectional view of line 9-9 in FIG. 5. The inner chamber 100 includes a first chamber 100a located in the first cooling section 11, a second chamber 100b located in the second cooling section 12, and a third chamber 100c located in the third cooling section 13. The first fin set 21 is disposed in the first chamber 100a. The second fin set 22 is disposed in the second chamber 100b. The third fin set 23 and the fourth fin set 24 are disposed in the third chamber 100c.

[0048] With reference to FIGS. 5 and 7, the shell 10 of this disclosure includes a guiding ramp 16 located in the first cooling section 11. The guiding ramp 16 is positioned in the first chamber 100a and located on the upstream side of the first fin set 21. Accordingly, the coolant flowing into the first chamber 100a from the inlet pipe 14 may flow into the first fin set 21 along the guiding ramp 16 to exchange heat with the first fin set 21 and take away part of the heat. Then, the coolant flows out of the first fin set 21 and enters the third fin set 23 to exchange heat with the third fin set 23 and take away part of the heat.

[0049] With reference to FIGS. 5 and 8, the third chamber 100c is disposed in the third cooling section 13. The third fin set 23 and the fourth fin set 24 are arranged in the third chamber 100c spacedly. The third fin set 23 is disposed at a second angle B with respect to the water inlet direction 1100, and the fourth fin set 24 is disposed at a third angle C with respect to the water outlet direction 1200 (see FIG. 4). Moreover, after the coolant flows out of the third fin set 23, most of the coolant flows into the fourth fin set 24 and then flows out of the third chamber 100c.

[0050] With reference to FIGS. 5 and 9, the coolant flows out from the third fin set 23 located in the third chamber 100c, then enters the second chamber 100b and flows into the second fin set 22, where the coolant exchanges heat with the second fin set 22, taking away part of the heat, and finally flows out from the outlet pipe 15. Accordingly, the heat from the heating elements 2 transferred to the heat sink group 20 may be taken away by the coolant, thereby achieving the purpose of heat dissipation.

[0051] It should be noted that the overall heights of the first fin set 21, the second fin set 22, the third fin set 23, and the fourth fin set 24 of this disclosure are substantially the same. It is worth noting that the heights of the first chamber 100a and the second chamber 100b are greater than that of the third chamber 100c. Accordingly, when one side of the first fin set 21 is attached to the first chamber100a, a first retention area 100d, as shown in FIG. 7, is formed by another side of the first fin set 21 and the inner wall of the first chamber 100a. Furthermore, when one side of the second fin set 22 is attached to the second chamber 100b, a second retention area 100e, as shown in FIG. 9, is formed by another side of the second fin set 22 and the inner wall surface of the second chamber 100b. The disposition of the first retention area 100d and the second retention area 100e may increase contact areas between the coolant and the first fin set 21 and the second fin set 22, thereby improving heat dissipation efficiency. Moreover, in order to maintain a certain spatial height of the second retention area 100e, a spacer 250 may be placed between the second fin set 22 and the first shell plate 101.

[0052] Furthermore, FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. 5, which shows the cross-section of the first chamber 100a and the second chamber 100b at the position of line 10-10. FIG. 11 is a cross-sectional view of line 11-11 in FIG. 5, which shows a cross-section of the third chamber 100c at the position of line 11-11.

[0053] With reference to FIGS. 5 and 10, the first fin set 21 is disposed in the first chamber 100a, and the first chamber 100a has a first cross-sectional area perpendicular to the water flow direction. The second fin set 22 is disposed in the second chamber 100b, and the second chamber 100b has a second cross-sectional area perpendicular to the water flow direction. Additionally, the third fin set 23 and the fourth fin set 24 are disposed in the third chamber 100c, and the third chamber 100c has a third cross-sectional area perpendicular to the water flow direction. The first cross-sectional area is greater than the third cross-sectional area, and the third cross-sectional area is greater than the second cross-sectional area. In general, the flow channels of the shell 10 are gradually narrowed from the first chamber 100a towards the third chamber 100c and the second chamber 100b in order to reduce water resistance and thereby increase the flow rate of the coolant and the heat dissipation efficiency.

[0054] It should be noted that the arrangement of the first fin set 21 may be attached to the wall surface of the first chamber 100a (refer to FIG. 1, the first shell plate 101, or the second shell plate 102). Thus, the first fin set 21 is suspended within the first chamber 100a while leaving a space on the opposite side. Alternatively, the first fin set 21 is configured to contact two opposite inner walls (the first shell plate 101 and the second shell plate 102) of the first chamber 100a. Similarly, the arrangement of the second fin set 22 is attached to the wall surface of the second chamber 100b (the first shell plate 101 or the second shell plate 102), or the second fin set 22 may be attached to two opposite inner walls of the second chamber 100b (the first shell plate 101 and the second shell plate 102). In some embodiments, the arrangement of the first fin set 21 and the second fin set 22 may be arranged according to actual conditions. Similarly, in order to maintain a certain space height for the second retention area 100e, the spacer 250 may be placed between the second fin set 22 and the first shell plate 101.

[0055] Please refer to FIGS. 12 and 13, which depict two cross-sectional views of the liquid cooling plate assembly according to this disclosure. The shell 10 includes a first shell plate 101 and a second shell plate 102. The first shell plate 101 and the second shell plate 102 cover with each other to form the inner chamber 100. The heat sink group 20 is disposed in the inner chamber 100, and there are various embodiments of the positions of the heat sink group 20. As shown in FIG. 12, the second shell plate 102 of the shell 10 is combined with the heat sink group 20, and a protrusion 104 is formed on the outer surface of the second shell plate 102 for attaching the heating element. Additionally, as shown in FIG. 13, the second shell plate 102 of the shell 10 is combined with the heat sink group 20, and an indentation 105 is disposed on the inner wall of the second shell plate 102 to increase contact areas with the coolant.

[0056] Please refer to FIGS. 14 and 15, which depict two additional cross-sectional views of the liquid cooling plate assembly according to this disclosure. In this embodiment, the shell 10 includes a first shell plate 101 and a second shell plate 102, and the first shell plate 101 and the second shell plate 102 cover with each other to form the inner chamber 100. The heat sink group 20 is disposed in the inner chamber 100, and there are various embodiments of the positions of the heat sink group 20. As shown in FIG. 14, the second shell plate 102 of the shell 10 is combined with the heat sink group 20, and a protrusion 104 is formed on the outer surface of the second shell plate 102 for attaching the heating element. Additionally, a protrusion 106 is also formed on the outer surface of the first shell plate 101 for attaching the heating element. Furthermore, as shown in FIG. 15, the second shell plate 102 of the shell 10 is combined with the heat sink group 20, and a protrusion 104 is formed on the outer surface of the second shell plate 102 for attaching the heating element. Additionally, an indentation 107 is disposed on the inner wall of the first shell plate 101 to increase contact areas with the coolant.

[0057] In this embodiment of this disclosure, the first shell plate 101 and the second shell plate 102 are generally made of aluminum alloy. The two shell plates are welded together to form the shell 10. The protrusions 104 and 106 not only adhere to the heating element but also fill the gap between the fin sets and the heating element. Considering heat conduction, the copper alloy may be welded onto the second shell plate 102 to form the protrusion 104 or welded onto the first shell plate 101 to form the protrusions 106. The positions of the protrusions 104, 106, and the indentations 105, 107 are not limited and may be corresponding to the outer surface of the shell 10 where the heat sink group 20 is projected to.

[0058] Please further refer to FIG. 16, which depicts a perspective schematic view of another embodiment of the liquid cooling plate assembly according to this disclosure. In this embodiment, the liquid cooling plate assembly 1 includes a shell 10 and a heat sink group 20. The heat sink group 20 is disposed in the shell 10. The heat sink group 20 includes a first fin set 21’ disposed in the first cooling section 11, a second fin set 22 disposed in the second cooling section 12, a third fin set 23 and a fourth fin set 24 disposed in the third cooling section 13. The difference between this embodiment and the previous embodiment is that only a single first fin set 21’ is disposed in the first cooling section 11. It should be noted that the quantity and position of the heat sink group 20 are adjusted based on actual conditions to achieve the requirements of lightweight and efficient heat dissipation.

[0059] While this disclosure has been described by means of specific embodiments, numerous modifications and variations may be made thereto by those skilled in the art without departing from the scope and spirit of this disclosure set forth in the claims.

Claims

1. A liquid cooling plate assembly, comprising:a shell, comprising an inner chamber, a first cooling section, a second cooling section spaced apart from the first cooling section, and a third cooling section positioned between the first and second cooling sections, wherein the first cooling section comprises an inlet, two inner wall surfaces of the inlet are disposed as inlet arc surfaces, the second cooling section comprises an outlet, and two inner wall surfaces of the outlet are disposed as outlet arc surfaces; anda heat sink group, located in the inner chamber.

2. The liquid cooling plate assembly according to claim 1, wherein the first cooling section comprises a water inlet direction; the heat sink group comprises a first fin set disposed in the first cooling section, and the first fin set comprises a plurality of first fins arranged parallelly and spacedly; the first fin set comprises a first extension line parallel to an extension direction of the first fins, and the first extension line is substantially parallel to the water inlet direction.

3. The liquid cooling plate assembly according to claim 2, wherein the second cooling section comprises a water outlet direction; the heat sink group comprises a second fin set disposed in the second cooling section, and the second fin set comprises a plurality of second fins arranged parallelly and spacedly; the second fin set comprises a second extension line parallel to an extension direction of the second fins, and a first angle is defined between the second extension line and the water outlet direction.

4. The liquid cooling plate assembly according to claim 3, wherein the heat sink group comprises a third fin set disposed on a downstream side of the first fin set, and the third fin set comprises a plurality of third fins arranged parallelly and spacedly; the third fin set comprises a third extension line parallel to an extension direction of the third fins, and a second angle is defined between the third extension line and the water inlet direction.

5. The liquid cooling plate assembly according to claim 4, wherein a gap is maintained between an inner wall surface of the inner chamber and the second fin set and between the inner wall surface of the inner chamber and the third fin set, respectively.

6. The liquid cooling plate assembly according to claim 2, wherein the inner chamber comprises a first chamber located in the first cooling section, a second chamber located in the second cooling section, and a third chamber located in the third cooling section; and a height of the first chamber or a height of the second chamber is greater than that of the third chamber.

7. The liquid cooling plate assembly according to claim 6, wherein the shell comprises a guiding ramp located on the first cooling section, and the guiding ramp is positioned in the first chamber and located on an upstream side of the first fin set.

8. The liquid cooling plate assembly according to claim 6, wherein the first chamber has a first cross-sectional area perpendicular to a water flow direction, the second chamber has a second cross-sectional area perpendicular to the water flow direction, and the third chamber has a third cross-sectional area perpendicular to the water flow direction; the first cross-sectional area is greater than the third cross-sectional area, and the third cross-sectional area is greater than the second cross-sectional area.

9. A liquid cooling plate assembly, comprising:a shell, comprising an inner chamber, a first cooling section, a second cooling section, and a third cooling section located between the first cooling section and the second cooling section, wherein the first cooling section comprises a water inlet direction, and the second cooling section comprises a water outlet direction; anda heat sink group, comprising a first fin set disposed in the first cooling section and a second fin set disposed in the second cooling section, wherein the first fin set comprises a plurality of first fins arranged parallelly and spacedly, and the first fin set comprises a first extension line parallel to an extension direction of the first fins; the second fin set comprises a plurality of second fins arranged parallelly and spacedly, and the second fin set comprises a second extension line parallel to an extension direction of the second fins; the first extension line is substantially parallel to the water inlet direction; and a first angle is defined between the second extension line and the water outlet direction.

10. The liquid cooling plate assembly according to claim 9, wherein the heat sink group comprises a third fin set disposed on a downstream side of the first fin set, and the third fin set comprises a plurality of third fins arranged parallelly and spacedly; the third fin set comprises a third extension line parallel to an extension direction of the third fins, and a second angle is defined between the third extension line and the water inlet direction.

11. The liquid cooling plate assembly according to claim 10, wherein the heat sink group comprises a fourth fin set disposed on an upstream side of the second fin set, and the fourth fin set comprises a plurality of fourth fins arranged parallelly and spacedly; the fourth fin set comprises a fourth extension line parallel to an extension direction of the fourth fins, and a third angle is defined between the fourth extension line and the water outlet direction.

12. The liquid cooling plate assembly according to claim 11, wherein a gap is maintained between an inner wall surface of the inner chamber and the second fin set, between the inner wall surface of the inner chamber the third fin set, and between the inner wall surface of the inner chamber the fourth fin set, respectively.

13. The liquid cooling plate assembly according to claim 9, wherein the inner chamber comprises a first chamber located in the first cooling section, a second chamber located in the second cooling section, and a third chamber located in the third cooling section; and a height of the first chamber and a height of the second chamber are greater than that of the third chamber, respectively.

14. The liquid cooling plate assembly according to claim 13, wherein the shell comprises a guiding ramp located on the first cooling section, and the guiding ramp is positioned in the first chamber and located on an upstream side of the first fin set.

15. The liquid cooling plate assembly according to claim 13, wherein the first chamber has a first cross-sectional area perpendicular to a water flow direction, the second chamber has a second cross-sectional area perpendicular to the water flow direction, and the third chamber has a third cross-sectional area perpendicular to the water flow direction; the first cross-sectional area is greater than the third cross-sectional area, and the third cross-sectional area is greater than the second cross-sectional area.

16. The liquid cooling plate assembly according to claim 9, wherein the shell comprises a first shell plate and a second shell plate, and the inner chamber is structured by the first shell plate covering the second shell plate.

17. The liquid cooling plate assembly according to claim 16, wherein the first shell plate or the second shell plate comprises a protrusion located on an outer surface thereof.

18. The liquid cooling plate assembly according to claim 16, wherein an indentation is disposed on an inner wall of the first shell plate or the second shell plate.

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