Integrated cold plate cooling device

Abstract

This case discloses an integrated cold plate heat dissipation device, including a base plate and a cover plate. The base plate includes a top surface, a bottom surface, and a plurality of heat dissipation fins, wherein the top surface and the bottom surface are arranged opposite to each other in a first direction, the bottom surface is thermally coupled to a plurality of heat sources, and the plurality of heat dissipation fins are disposed on the top surface, spatially opposite to the plurality of heat sources. The cover plate includes an inlet, at least one outlet, and a plurality of turbulence generators, wherein when the cover plate is assembled to the top surface of the base plate along the first direction, a plurality of chambers are formed, wherein the plurality of chambers respectively accommodate the plurality of heat dissipation fins and are connected between the inlet and at least one outlet, wherein the plurality of turbulence generators protrude from the cover plate toward the base plate, and one of the plurality of turbulence generators is correspondingly disposed between each of the plurality of heat dissipation fins and the inlet.

Description

Technical Field

[0001] This case relates to a heat dissipation device, particularly an integrated cold plate heat dissipation device, which enhances heat transfer efficiency and improves overall heat dissipation performance and system reliability by using a turbulence generator to enhance heat transfer and rationally distribute coolant flow. Prior Technology

[0002] For current multi-chip packaging designs, multiple chips are typically mounted on the same printed circuit board, with each chip requiring an independent cold plate or heat dissipation module for cooling. However, mounting multiple cold plates or heat dissipation modules to the heat sources of multiple chips requires a cumbersome installation process, and the water circuit connection design for multiple cold plates or heat dissipation modules is also quite complex, increasing the risk of coolant leakage and damage to equipment performance.

[0003] In view of this, it is necessary to provide an integrated cold plate heat dissipation device that enhances heat transfer effect and rationally distributes coolant flow through a turbulence generator, thereby improving overall heat dissipation efficiency and system reliability. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated cold plate heat dissipation device. By enhancing heat transfer through a turbulence generator and optimizing the distribution of coolant flow, the overall heat dissipation performance and system reliability are improved.

[0005] Another objective of this invention is to provide an integrated cold plate heat dissipation device. A one-piece molded metal base plate and a one-piece molded plastic cover plate are tightly joined by rubber sealing elements to form multiple cooling chambers connected between the inlet and outlet ports on the plastic cover plate, simultaneously dissipating heat from multiple heat sources mounted on a single printed circuit board. Multiple heat dissipation fins are configured corresponding to multiple heat sources, effectively achieving thermal coupling. Because the plastic cover plate is easy to design and modify for flow channels, turbulence generators can be installed corresponding to the positions of the heat dissipation fins within the multiple cooling chambers. Multiple turbulence generators protrude downwards from the bottom surface of the plastic cover plate and are located at least at the leading edge of the flow channel connecting each of the multiple chambers to the inlet port. In other words, a turbulence generator is correspondingly installed between each of the multiple heat dissipation fins and the inlet port to effectively generate turbulence and enhance heat transfer. The turbulence generator, mounted on the plastic cover, is composed of multiple protruding features that effectively generate turbulence to enhance heat transfer. Its structure can be composed of units such as square prisms, triangular prisms, square prisms, polygonal prisms, circular prisms, cones, round-headed prisms, inclined prisms, airfoil prisms, arc-shaped fins, transverse ribs, inclined ribs, V-shaped ribs, and W-shaped ribs. The cross-section of the rib structure can be square, triangular, right-angled triangle, round-headed rectangle, or arc-shaped, and the style, quantity, and arrangement can be varied according to actual application requirements. Furthermore, the turbulence generator can be positioned at the inlet of the heat sink fin area or in the interval area of ​​the heat sink fins within the cooling chamber. By adjusting the style, quantity, and arrangement of the turbulence generator, the pressure drop in the heat sink fin area within the cooling chamber can be controlled, thereby achieving a reasonable distribution of coolant flow. Moreover, the turbulence generator can be, for example, a movable structure, allowing its direction or position to be adjusted according to flow velocity or pressure drop. On the other hand, the coolant outlet can be located in multiple places to accommodate the heat source layout of the chip, but this is not a limitation. Furthermore, the coolant flowing between the inlet and outlet is not limited to a single-phase cooling fluid, such as water or oil. It can also be a two-phase cooling fluid, such as a refrigerant, to improve the cooling efficiency of the heat dissipation device through phase change. Of course, this application is not limited to this.

[0006] To achieve the aforementioned objectives, this invention provides an integrated cold plate heat dissipation device, comprising a base plate and a cover plate. The base plate includes a top surface, a bottom surface, and a plurality of heat dissipation fins, wherein the top surface and the bottom surface are arranged opposite to each other in a first direction, the bottom surface is thermally coupled to a plurality of heat sources, and the plurality of heat dissipation fins are disposed on the top surface, spatially opposite to the plurality of heat sources. The cover plate includes an inlet, at least one outlet, and a plurality of turbulence generators, wherein when the cover plate is assembled to the top surface of the base plate along the first direction, a plurality of chambers are formed, wherein the plurality of chambers respectively accommodate the plurality of heat dissipation fins and are connected between the inlet and at least one outlet, wherein the plurality of turbulence generators protrude from the cover plate toward the base plate, and one of the plurality of turbulence generators is correspondingly disposed between each of the plurality of heat dissipation fins and the inlet.

[0007] In one embodiment, the base plate is integrally formed from a metal material, and the cover plate is integrally formed from a plastic material.

[0008] In one embodiment, in a first direction of view, a plurality of heat dissipation fins and a plurality of heat sources are arranged in an overlapping manner.

[0009] In one embodiment, in a first direction of view, a plurality of heat dissipation fins and a plurality of turbulence generators are staggered.

[0010] In one embodiment, coolant passes through a plurality of chambers along a second direction perpendicular to the first direction, wherein a plurality of heat dissipation fins extend along the second direction, and the openings of the inlet and outlet face the first direction.

[0011] In one embodiment, the outer peripheral wall of the cover plate is tightly bonded to the base plate by a rubber sealing element.

[0012] In one embodiment, the complex turbulence generator includes at least one rib structure selected from a group consisting of a transverse rib, an inclined rib, a V-shaped rib, a W-shaped rib, and combinations thereof.

[0013] In one embodiment, the cross-section of at least one rib structure is selected from one of the groups consisting of square, rectangle, triangle, right triangle, rounded rectangle, arc and combination thereof, wherein a plurality of heat dissipation fins extend along a second direction, the second direction being perpendicular to the first direction, and the extension direction of at least one rib structure is not parallel to the second direction.

[0014] In one embodiment, the center of each V-rib is a pointed tip, which faces the inlet or at least one outlet.

[0015] In one embodiment, the center of each W-shaped rib is a pointed tip, which faces the outlet or at least one outlet.

[0016] In one embodiment, the complex turbulence generator includes a plurality of columnar structures, which are selected from the group consisting of square columns, triangular columns, quadrangular columns, polygonal columns, circular columns, cones, round-headed columns, inclined columns, airfoil columns, arc-shaped fins, and combinations thereof.

[0017] In one embodiment, the plurality of column structures are arranged in a aligned array or a staggered array.

[0018] In one embodiment, the number of at least one outlet is greater than the number of inlets.

[0019] In one embodiment, the number of at least one outlet is the same as the number of a plurality of chambers. After the coolant passes through the plurality of chambers along a second direction, it is discharged from the corresponding at least one outlet. The second direction is perpendicular to the first direction.

[0020] In one embodiment, the coolant passes through a plurality of chambers along a second direction, which is perpendicular to the first direction. The plurality of heat dissipation fins extend along the second direction in the plurality of chambers and are segmented to form at least one interval region. One of the plurality of turbulence generators is located in at least one interval region.

[0021] In one embodiment, in a first direction of view, at least one spaced region is arranged to overlap with a plurality of heat sources.

[0022] In one embodiment, the integrated cold plate heat dissipation device further includes a plurality of lead channels, wherein the inlet is diverted to a plurality of chambers through the plurality of lead channels.

[0023] In one embodiment, the integrated cold plate heat dissipation device further includes a plurality of leading channels, wherein the plurality of leading channels are respectively disposed between the leading edge of each of the plurality of chambers and the inlet.

[0024] In one embodiment, the coolant passes through the plurality of chambers along a second direction, which is perpendicular to the first direction. The plurality of chambers connecting the inlet and at least one outlet are symmetrically arranged, with the central axis of the symmetry parallel to the second direction.

[0025] In one embodiment, a plurality of heat sources, including a plurality of heat-generating chips, are mounted on a single printed circuit board, and the plurality of heat sources are directly thermally coupled to the bottom surface of the base plate. Simple Explanation of the Diagram

[0026] The following detailed description of the case and the schematic diagrams of the embodiments are intended to enable those skilled in the art to better understand the above content, and are not intended to limit the case.

[0027] Figure 1 is a schematic diagram illustrating the structure of the integrated cold plate heat dissipation device according to the first embodiment of this case.

[0028] Figure 2 shows a cross-sectional view of the integrated cold plate heat dissipation device in Figure 1 taken along line segment AA'.

[0029] Figures 3A to 3D respectively illustrate exemplary examples of the rib structure of the turbulence generator in this case.

[0030] Figures 4A to 4F illustrate exemplary cross-sections of the ribs of the turbulence generator in this case.

[0031] Figures 5A to 5F illustrate an example of the columnar structure of the turbulence generator in this case arranged in a counter-array.

[0032] Figures 6A to 6F illustrate an example of the staggered array arrangement of the columnar structure of the turbulence generator in this case.

[0033] Figure 7 is a schematic diagram illustrating the structure of the integrated cold plate heat dissipation device according to the second embodiment of this case.

[0034] Figure 8 shows a cross-sectional view of the integrated cold plate heat dissipation device in Figure 7 taken along line segment BB'.

[0035] Figure 9 is a schematic diagram illustrating the structure of the integrated cold plate heat dissipation device according to the third embodiment of this case.

[0036] Figure 10 shows a cross-sectional view of the integrated cold plate heat dissipation device in Figure 9 taken along line segment CC'.

[0037] Figure 11 is a schematic diagram showing the structure of the integrated cold plate heat dissipation device according to the fourth embodiment of this case.

[0038] Figure 12 shows a cross-sectional view of the integrated cold plate heat dissipation device in Figure 11 taken along line segment DD'. Implementation

[0039] Some typical embodiments embodying the features and advantages of this invention will be described in detail in the following description. It should be understood that this invention can have various variations in different forms, all of which do not depart from the scope of this invention, and the descriptions and drawings herein are essentially for illustrative purposes and not for limiting this invention. For example, if the following disclosure describes a first feature disposed on or above a second feature, it indicates that it includes embodiments where the first and second features are in direct contact, and also includes embodiments where additional features can be disposed between the first and second features, so that the first and second features may not be in direct contact. Furthermore, different embodiments in this disclosure may use repeated reference numerals and / or markings. These repetitions are for simplification and clarity and are not intended to limit the relationships between the various embodiments and / or the described appearance structures. Moreover, to facilitate the description of the relationship between one component or feature and another (plural) component or feature in the drawings, spatially related terms such as "upper," "lower," "top," "bottom," and similar terms may be used. In addition to the orientations shown in the diagrams, spatially related terms are used to cover different orientations of the device in use or operation. The device may also be positioned otherwise (e.g., rotated 90 degrees or located in other orientations), and the descriptions of the spatially related terms used will be interpreted accordingly. Furthermore, when a component is referred to as "connected to" or "coupled to" another component, it may be directly connected to or coupled to the other component, or there may be intervening components. Additionally, it is understood that while terms such as "first," "second," etc., may be used in the claims to describe different components, these components should not be limited by these terms, and the components described accordingly in the embodiments are represented by different component symbols. These terms are used to distinguish different components. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component without departing from the scope of the embodiments. The term "and / or" as thus used includes any or all combinations of one or more of the related listed items.

[0040] Figure 1 is a structural schematic diagram illustrating the integrated cold plate heat dissipation device of the first embodiment of this invention. Figure 2 is a cross-sectional view of the integrated cold plate heat dissipation device of Figure 1 taken along line segment AA. Referring to Figures 1 and 2, this invention provides an integrated cold plate heat dissipation device 1, including a base plate 10 and a cover plate 20. The base plate 10 is integrally formed from a metal material, for example, and the cover plate 20 is integrally formed from a plastic material, for example. In this embodiment, the base plate 10 includes a top surface 11, a bottom surface 12, and a plurality of heat dissipation fins 13. The top surface 11 and the bottom surface 12 are arranged opposite to each other in a first direction (i.e., the Z-axis direction), and the bottom surface 12 is thermally coupled to a plurality of heat sources 9a, 9b, and 9c. It should be noted that, in this embodiment, the plurality of heat sources 9a, 9b, and 9c refer more specifically to a plurality of heat-generating chips mounted on a single printed circuit board, such as CPUs and GPUs on a PCB, and the plurality of heat sources 9a, 9b, and 9c are directly thermally coupled to the bottom surface 12 of the base plate 10. Of course, the bottom surface 12 is not limited to a plane, as will be stated previously. In this embodiment, a plurality of heat dissipation fins 13 are disposed on the top surface 11 of the base plate 10, spatially relative to the plurality of heat sources 9a, 9b, and 9c. In the first direction (i.e., the Z-axis direction), the plurality of heat dissipation fins 13 overlap with the plurality of heat sources 9a, 9b, and 9c. The cover plate 20 includes an inlet 21, at least one outlet 22b and 22c, and a plurality of turbulence generators 3. In this embodiment, after the outer peripheral wall of the cover plate 20 is tightly bonded to the base plate 10 along the first direction (i.e., the Z-axis direction) by a rubber sealing element 8 such as an O-ring, the cover plate 20 can be assembled onto the top surface 11 of the base plate 10. Simultaneously, a plurality of chambers 23a, 23b, and 23c are formed between the cover plate 20 and the base plate 10. Each of the chambers 23a, 23b, and 23c contains a plurality of heat dissipation fins 13, which work together to dissipate the generated heat. Furthermore, the chambers 23a, 23b, and 23c are allowed to be connected in series and / or in parallel between the inlet 21 and at least one outlet 22b, 22c. In this embodiment, the inlet 21 is connected to the chamber 23a via a guide channel 24a. The chamber 23a is connected to the chambers 23b and 23c via guide channels 24b and 24c, respectively. The chambers 23b and 23c are connected to the outlets 22b and 22c via outlet channels 25b and 25c, respectively. After the coolant (not shown) enters the inlet 21, it first flows through the chamber 23a along the second direction (i.e., the Y-axis direction), then is split by the guide channels 24b and 24c, flows through the chambers 23b and 23c along the second direction (i.e., the Y-axis direction), and finally is discharged from the outlets 22b and 22c. The second direction is perpendicular to the first direction. The integrated cold plate heat dissipation device 1 is more symmetrically designed, with the axis of symmetry parallel to the second direction, but this embodiment is not limited to this. In this embodiment, a plurality of heat dissipation fins 13 extend along the second direction (i.e., the Y-axis direction) and are parallel to the flow direction F of the coolant.The openings of the inlet 21 and outlets 22b and 22c face the first direction (i.e., the Z-axis direction), but are not limited thereto. It is noteworthy that a plurality of turbulence generators 3 protrude from the cover plate 20 toward the base plate 10, and one of the plurality of turbulence generators 3 is correspondingly disposed between each of the plurality of heat dissipation fins 13 and the inlet 21. In the first direction (i.e., the Z-axis direction), the plurality of heat dissipation fins 13 and the plurality of turbulence generators 3 are staggered. In other words, at least one turbulence generator 3 is disposed at the leading edge of the flow channel communicating with the inlet 21 in each of the plurality of chambers 23a, 23b, and 23c, to effectively generate turbulence and enhance the heat transfer effect of the plurality of heat dissipation fins 13 on the plurality of heat sources 9a, 9b, and 9c.

[0041] It should be noted that the turbulence generator 3 disposed on the cover plate 20 is composed of multiple protruding features, which can effectively generate turbulence to enhance the heat transfer effect, and the structure is not limited to a single type. Figures 3A to 3D respectively show exemplary examples of the rib structure of the turbulence generator of this invention. In one embodiment, the turbulence generator 3 is, for example, at least one rib structure on the cover plate 20. As shown in Figure 3A, the turbulence generator 3 is, for example, a pair of transverse ribs 31a. By adjusting the protrusion height, thickness and number, the pressure drop, flow rate and turbulence effect when the coolant enters the plurality of chambers 23a, 23b, 23c can be controlled, thereby enhancing the heat dissipation effect of the heat sink fins 13 on the heat sources 9a, 9b, 9c. As shown in Figure 3B, the turbulence generator 3 is, for example, a pair of inclined ribs 31b. By adjusting the protrusion height, thickness, tilt angle, and number, the pressure drop, flow rate, and turbulence effect when the coolant enters the plurality of chambers 23a, 23b, and 23c can be controlled, thereby enhancing the heat dissipation effect of the heat sink fins 13 on the heat sources 9a, 9b, and 9c. As shown in Figure 3C, the turbulence generator 3 is, for example, a pair of V-shaped ribs 31c. The center of each V-shaped rib 31c is a tip, which can face the inlet 21 or at least one outlet 22b or 22c. By adjusting the protrusion height, thickness, tip direction, and number, the pressure drop, flow rate, and turbulence effect when the coolant enters the plurality of chambers 23a, 23b, and 23c can be controlled, thereby enhancing the heat dissipation effect of the heat sink fins 13 on the heat sources 9a, 9b, and 9c. As shown in Figure 3D, the turbulence generator 3 is, for example, a pair of W-shaped ribs 31d, each with a pointed tip at its center. The tip can face the inlet 21 or at least one outlet 22b, 22c. By adjusting the protrusion height, thickness, tip direction, and number, the pressure drop, flow rate, and turbulence effect when the coolant enters the plurality of chambers 23a, 23b, 23c can be controlled, thereby enhancing the heat dissipation effect of the heat sink fins 13 on the heat sources 9a, 9b, 9c. Of course, the turbulence generator 3 in this case can be combined and varied, and is not limited to this.

[0042] Figures 4A to 4F illustrate exemplary cross-sections of the ribs in this turbulence generator. Besides the main body of the aforementioned rib structure, the cross-section of the rib structure can also be adjusted as needed. In this embodiment, the aforementioned rib structure constituting the turbulence generator 3 may have, for example, a rectangular cross-section 32a (as shown in Figure 4A), a right-angled triangular cross-section 32b (as shown in Figure 4B), a triangular cross-section 32c (as shown in Figure 4C), a rounded rectangular cross-section 32d (as shown in Figure 4D), or different arc-shaped cross-sections 32e and 32f (as shown in Figures 4E and 4F). Of course, the rib cross-section of the turbulence generator 3 in this invention can be combined and varied, and is not limited to this. Any method that allows for appropriate adjustment of cooling pressure drop and flow rate through the selection of suitable rib structure cross-sections is applicable to this invention.

[0043] On the other hand, in one embodiment, the turbulence generator 3 can also be, for example, a plurality of columnar structures on the cover plate 20, arranged in an opposing array. Figures 5A to 5F illustrate exemplary examples of the opposing array arrangement of the columnar structures of the turbulence generator in this invention. In one embodiment, the turbulence generator 3 of the aforementioned integrated cold plate heat dissipation device 1 can be, for example, modified to the configuration of the turbulence generator 3a shown in Figure 5A, which includes a plurality of square columns 33a, arranged in pairs in an opposing array. By adjusting the protrusion height, size, spacing distance, and number of the square columns 33a, the pressure drop, flow rate, and turbulence effect when the coolant enters the plurality of chambers 23a, 23b, and 23c can be controlled, thereby enhancing the heat dissipation effect of the heat dissipation fins 13 on the heat sources 9a, 9b, and 9c. In one embodiment, the turbulence generator 3 of the aforementioned integrated cold plate heat dissipation device 1 can be, for example, replaced by the configuration of turbulence generator 3a shown in Figure 5B or Figure 5C. The turbulence generator 3a includes a plurality of equilateral triangular prisms 33b or inverted triangular prisms 33c. By adjusting the protrusion height, size, spacing, angle of the sharp corners, and number of the triangular prisms 33b and 33c, the pressure drop, flow rate, and turbulence effect when the coolant enters the plurality of chambers 23a, 23b, and 23c can be controlled, thereby enhancing the heat dissipation effect of the heat dissipation fins 13 on the heat sources 9a, 9b, and 9c. In another embodiment, the turbulence generator 3 of the aforementioned integrated cold plate heat dissipation device 1 can also be, for example, replaced by the configuration of turbulence generator 3a shown in Figures 5D to 5F. The turbulence generator 3a is replaced by polygonal prisms 33d or different airfoil prisms 33e and 33f to increase the diversity of the modulation of pressure drop, flow rate, and turbulence effect. Of course, the plurality of cylindrical structures of the turbulence generator 3a can also be selected from square cylinders, circular cylinders, cones, round-headed cylinders, inclined cylinders, arc-shaped fins, or other cylindrical structures. This case is not limited to this.

[0044] Furthermore, Figures 6A to 6F illustrate an example of a staggered array arrangement of the column structure of the turbulence generator in this case. Compared to the aligned array arrangement of the column structure shown in Figures 5A to 5F, when the multiple column structures of the turbulence generator 3b are composed of staggered arrays of square columns 33a, equilateral triangular columns 33b, inverted triangular columns 33c, polygonal columns 33d, or different airfoil columns 33e and 33f, it is more conducive to increasing the pressure drop of the coolant and reducing the flow rate. In other words, by adjusting the arrangement density, the pressure drop, flow rate, and turbulence effect can also be modulated. Of course, it should be emphasized that this case is not limited to the type of protruding features of the turbulence generators 3, 3a, and 3b on the cover plate 20; any protruding structure that can effectively generate turbulence is applicable to the turbulence generators 3, 3a, and 3b in this case to achieve enhanced heat transfer. Furthermore, turbulence generators 3, 3a, and 3b can be, for example, movable structures, allowing their direction or position to be adjusted according to flow velocity or pressure drop. The following description uses a single turbulence generator 3 to represent the possibilities of various combinations and variations, and is not intended to limit this application; this is provided for illustrative purposes only.

[0045] Furthermore, in this embodiment, the number of outlets 22b and 22c is two, which is greater than the number of inlets 21. When the outlets 22b and 22c have the same pipe diameter as the inlets 21, the greater number of outlets 22b and 22c than the number of inlets 21 also means that the total outflow cross-section is greater than the total inflow cross-section, which is more conducive to controlling the pressure drop and flow rate in the chambers 23a, 23b, and 23c, and the turbulence effect generated by the turbulence generator 3 corresponding to the heat dissipation fins 13. In addition, the coolant flowing between the inlets 21 and the outlets 22b and 22c is not limited to a single-phase cooling fluid, such as water or oil. It can also be a two-phase cooling fluid, such as a refrigerant, to improve the cooling efficiency of the heat dissipation device through phase change. Of course, this invention is not limited to this.

[0046] Figure 7 is a schematic diagram illustrating the structure of the integrated cold plate heat dissipation device according to the second embodiment of this invention. Figure 8 is a cross-sectional view of the integrated cold plate heat dissipation device in Figure 7 taken along line segment BB'. In this embodiment, the structure of the integrated cold plate heat dissipation device 1a is generally similar to that of the integrated cold plate heat dissipation device 1 shown in Figures 1 and 2, and the same component numbers represent the same components, structures, and functions, which will not be described again here. Referring to Figures 7 and 8. In the integrated cold plate heat dissipation device 1a, the flow direction F of the coolant is parallel to the second direction (i.e., the Y-axis direction), and the coolant passes through a plurality of chambers 23a, 23b, and 23c along the second direction. The plurality of heat dissipation fins 13a also extend along the second direction in the plurality of chambers 23a, 23b, and 23c, and the heat dissipation fins 13a in each chamber 23a, 23b, and 23c are further segmented in the second direction, forming at least one interval region 13b. It is worth noting that, in addition to the turbulence generator 3 being provided at the leading edge of the flow channel connecting each chamber 23a, 23b, 23c to the inlet 21, a turbulence generator 3' is also provided in the interval region 13b within the heat dissipation fin 13a. In the first direction (i.e., the Z-axis direction), at least one interval region 13b overlaps with a plurality of heat sources 9a, 9b, 9c. That is, a turbulence generator 3' is provided within the space where the plurality of heat sources 9a, 9b, 9c transfer heat to the corresponding heat dissipation fin 13a, which can more effectively generate turbulence and enhance the heat transfer effect of the plurality of heat dissipation fins 13a on the plurality of heat sources 9a, 9b, 9c. Of course, the turbulence generator 3' can be any combination or variation of the aforementioned turbulence generators 3, 3a, and 3b, which will not be elaborated further here.

[0047] Figure 9 is a schematic diagram illustrating the structure of the integrated cold plate heat dissipation device according to the third embodiment of this invention. Figure 10 is a cross-sectional view of the integrated cold plate heat dissipation device in Figure 9 taken along line segment CC'. In this embodiment, the structure of the integrated cold plate heat dissipation device 1b is generally similar to that of the integrated cold plate heat dissipation device 1 shown in Figures 1 and 2, and the same component numbers represent the same components, structures, and functions, which will not be described again here. Refer to Figures 9 and 10. In this embodiment, the integrated cold plate heat dissipation device 1b includes a plurality of leading channels 24a, 24b, and 24c. After the coolant enters the inlet 21, it flows through the plurality of leading channels 24a, 24b, and 24c to their respective plurality of chambers 23a, 23b, and 23c. The plurality of leading channels 24a, 24b, and 24c are respectively disposed between the leading edge of each of the plurality of chambers 23a, 23b, and 23c and the inlet 21. In this embodiment, the number of at least one outlet 22a, 22b, 22c is the same as the number of multiple chambers 23a, 23b, 23c. The coolant flows along the second direction (i.e., the Y-axis direction) through the multiple chambers 23a, 23b, 23c, and then flows through their respective connected outlet channels 25a, 25b, 25c to their corresponding outlets 22a, 22b, 22c for discharge. In this embodiment, the integrated cold plate heat dissipation device 1b is further symmetrically designed, with the axis of symmetry parallel to the second direction (i.e., the Y-axis direction). In this way, the coolant passes stably and evenly through the leading channels 24a, 24b, and 24c to their respective turbulence generators 3, thereby generating turbulence to enhance the heat transfer effect of the heat dissipation fins 13 on the heat sources 9a, 9b, and 9c. Furthermore, the turbulence generators 3 at the leading edges of the chambers 23b and 23c are not affected by the coolant exiting from the chamber 23a, and can better provide efficient heat dissipation for the heat sources 9b and 9c.

[0048] Figure 11 is a schematic diagram illustrating the structure of the integrated cold plate heat dissipation device according to the fourth embodiment of this invention. Figure 12 is a cross-sectional view of the integrated cold plate heat dissipation device in Figure 11 taken along line segment DD'. In this embodiment, the structure of the integrated cold plate heat dissipation device 1c is generally similar to that of the integrated cold plate heat dissipation device 1b shown in Figures 9 and 10, and the same component numbers represent the same components, structures, and functions, which will not be described again here. Refer to Figures 11 and 12. In this embodiment, the outlets 22a, 22b, and 22c correspond to the chambers 23a, 23b, and 23c, respectively, and have the same number. After the coolant is diverted at the inlet flow 21, it flows through the guide channels 24a, 24b, and 24c to the front-end turbulence generator 3 and the internal turbulence generator 3' corresponding to each chamber 23a, 23b, and 23c, respectively. When heat sources 9a, 9b, and 9c have different specifications and significantly different heat dissipation requirements, the front-end turbulence generator 3 and the internal turbulence generator 3' in the corresponding chambers 23a, 23b, and 23c can be adjusted according to their individual needs without interfering with each other. For example, if heat source 9b is large and has a large heat dissipation requirement, the heat dissipation fins 13a can be arranged in three sections, and the internal turbulence generators 3' can be arranged in two separate sections of 13b. Conversely, if heat source 9c is small and has a smaller heat dissipation requirement, the heat dissipation fins 13a can be arranged in two sections, and the internal turbulence generators 3' can be arranged in a single-section space of 13b. Thus, the integrated cold plate heat dissipation device 1c can adjust the style, arrangement, and quantity of the heat dissipation fins 13a, the front-end turbulence generator 3, and the internal turbulence generator 3' to suit the different heat dissipation requirements of heat sources 9a, 9b, and 9c. Of course, this invention is not limited to these limitations.

[0049] As can be seen from the above, the integrated cold plate heat dissipation devices 1, 1a, 1b, and 1c in this case can adjust the correspondence between heat dissipation fins 13, 13a and turbulence generators 3, 3' for heat sources 9a, 9b, and 9c with the same or different heat dissipation requirements on a single printed circuit board. The chambers 23a, 23b, and 23c where the heat dissipation fins 13 and 13a are located are not limited to being connected in series or / or in parallel. At least the leading edge of the heat dissipation fins 13 and 13a facing the flow direction F is provided with a turbulence generator 3, and a turbulence generator 3' can also be provided in the interval area 13b of the segmented heat dissipation fins 13a. Through the aforementioned combination of features, the integrated cold plate heat dissipation devices 1, 1a, 1b, and 1c can effectively control the cooling pressure drop, flow rate, and turbulence effect in the chambers 23a, 23b, and 23c that are close to the heat dissipation fins 13 and 13a, thereby achieving the purpose of improving the overall heat dissipation efficiency and increasing the reliability of the system.

[0050] In summary, this invention provides an integrated cold plate heat dissipation device. By enhancing heat transfer through turbulence generators and rationally distributing coolant flow, overall heat dissipation efficiency and system reliability are improved. A single-piece metal base plate and a single-piece plastic cover plate are tightly joined by rubber sealing elements to form multiple cooling chambers connected between the inlet and outlet ports on the plastic cover plate, simultaneously dissipating heat from multiple heat sources mounted on a single printed circuit board. Multiple heat dissipation fins are configured corresponding to multiple heat sources, effectively achieving thermal coupling. Because the plastic cover plate is easy to design and modify for flow channels, turbulence generators can be installed corresponding to the positions of the heat dissipation fins within the multiple cooling chambers. Multiple turbulence generators protrude downwards from the bottom surface of the plastic cover plate and are located at least at the leading edge of the flow channel connecting each of the multiple chambers to the inlet. In other words, a turbulence generator is correspondingly installed between each of the multiple heat dissipation fins and the inlet to effectively generate turbulence and enhance heat transfer. The turbulence generator, mounted on the plastic cover, is composed of multiple protruding features that effectively generate turbulence to enhance heat transfer. Its structure can be composed of units such as square prisms, triangular prisms, square prisms, polygonal prisms, circular prisms, cones, round-headed prisms, inclined prisms, airfoil prisms, arc-shaped fins, transverse ribs, inclined ribs, V-shaped ribs, and W-shaped ribs. The cross-section of the rib structure can be square, triangular, right-angled triangle, round-headed rectangle, or arc-shaped, and the style, quantity, and arrangement can be varied according to actual application requirements. Furthermore, the turbulence generator can be positioned at the inlet of the heat sink fin area or in the interval area of ​​the heat sink fins within the cooling chamber. By adjusting the style, quantity, and arrangement of the turbulence generator, the pressure drop in the heat sink fin area within the cooling chamber can be controlled, thereby achieving a reasonable distribution of coolant flow. Moreover, the turbulence generator can be, for example, a movable structure, allowing its direction or position to be adjusted according to flow velocity or pressure drop. On the other hand, the coolant outlet can be located in multiple places to accommodate the heat source layout of the chip, but this is not a limitation. Furthermore, the coolant flowing between the inlet and outlet is not limited to a single-phase cooling fluid, such as water or oil. It can also be a two-phase cooling fluid, such as a refrigerant, to improve the cooling efficiency of the heat dissipation device through phase change. Of course, this application is not limited to this.

[0051] This case can be modified in various ways by a person skilled in this technology, but all of them are still within the scope of the patent application.

[0052] 1, 1a, 1b, 1c: Integrated cold plate heat dissipation device 10: Base Plate 11: Top surface 12: Bottom surface 13, 13a: Heat dissipation fins 13b: Interval region 20: Cover plate 21: Inlet 22a, 22b, 22c: Outlet 23a, 23b, 23c: Chambers 24a, 24b, 24c: Leader channels 25a, 25b, 25c: Export Channels 3, 3', 3a, 3b: Turbulence generator 31a: Transverse rib 31b: Inclined rib 31c: V-shaped ribs 31d: W-shaped rib 32a: Rectangular section 32b: Right-angled triangular section 32c: Triangular cross section 32d: Round-headed rectangular cross-section 32e, 32f: Curved cross-section 33a: Square prism 33b, 33c: Triangular prisms 33d: Polygonal Prism 33e, 33f: Airfoil-shaped column 8: Rubber sealing elements 9a, 9b, 9c: Heat source F: Flow direction AA', BB', CC', DD': line segments X, Y, Z: Axes

Claims

1. An integrated cold plate heat dissipation device, comprising: A base plate includes a top surface, a bottom surface, and a plurality of heat dissipation fins, wherein the top surface and the bottom surface are disposed opposite to each other in a first direction, the bottom surface is thermally coupled to a plurality of heat sources, and the plurality of heat dissipation fins are disposed on the top surface and spatially opposite to the plurality of heat sources; and a cover plate includes an inlet and at least one outlet, wherein when the cover plate is assembled to the top surface of the base plate along the first direction, it forms a plurality of chambers, wherein the cover plate has a plurality of turbulence generators protruding from the cover plate toward the base plate; the plurality of chambers respectively accommodate the plurality of heat dissipation fins and are connected between the inlet and the at least one outlet; and one of the plurality of turbulence generators is correspondingly disposed between each of the plurality of heat dissipation fins and the inlet. One of the coolants passes through the plurality of chambers along a second direction perpendicular to the first direction. The plurality of heat dissipation fins extend along the second direction in the plurality of chambers and are segmented to form at least one interval region. One of the plurality of turbulence generators is located within the at least one interval region.

2. The integrated cold plate heat dissipation device as claimed in claim 1, wherein the base plate is integrally formed from a metal material and the cover plate is integrally formed from a plastic material.

3. The integrated cold plate heat dissipation device as claimed in claim 1, wherein, in the viewing direction of the first direction, the plurality of heat dissipation fins and the plurality of heat sources are arranged in an overlapping manner.

4. The integrated cold plate heat dissipation device as claimed in claim 1, wherein, in the viewing direction of the first direction, the plurality of heat dissipation fins and the plurality of turbulence generators are staggered.

5. The integrated cold plate heat dissipation device as claimed in claim 1, wherein the openings of the inlet and the outlet face the first direction.

6. The integrated cold plate heat dissipation device as claimed in claim 1, wherein the outer peripheral wall of the cover plate is tightly bonded to the base plate by a rubber sealing element.

7. The integrated cold plate heat dissipation device as claimed in claim 1, wherein the complex turbulence generator includes at least one rib structure selected from one of the group consisting of a transverse rib, an inclined rib, a V-shaped rib, a W-shaped rib, and combinations thereof.

8. The integrated cold plate heat dissipation device as claimed in claim 7, wherein the cross-section of the at least one rib structure is selected from one of the group consisting of square, rectangle, triangle, right triangle, rounded rectangle and combinations thereof, wherein the plurality of heat dissipation fins extend along the second direction, the second direction being perpendicular to the first direction, and the extension direction of the at least one rib structure is not parallel to the second direction.

9. The integrated cold plate heat dissipation device as claimed in claim 7, wherein the center of each of the V-ribs is a tip, the tip facing the inlet or the at least one outlet.

10. The integrated cold plate heat dissipation device as claimed in claim 7, wherein each of the W-shaped ribs has a pointed tip at its center, the pointed tip facing the inlet or the at least one outlet.

11. The integrated cold plate heat dissipation device as claimed in claim 1, wherein the complex turbulence generator comprises a plurality of column structures, the plurality of column structures being selected from one of the group consisting of square columns, triangular columns, quadrangular columns, polygonal columns, circular columns, cones, round-headed columns, inclined columns, airfoil columns, arc-shaped fins, and combinations thereof.

12. The integrated cold plate heat dissipation device as claimed in claim 11, wherein the plurality of column structures are arranged in a aligned array or a staggered array.

13. The integrated cold plate heat dissipation device as claimed in claim 1, wherein the number of the at least one outlet is greater than the number of the inlet outlets.

14. The integrated cold plate heat dissipation device as claimed in claim 1, wherein the number of the at least one outlet is the same as the number of the plurality of chambers, and the coolant passes through the plurality of chambers along the second direction and is discharged from the corresponding at least one outlet.

15. The integrated cold plate heat dissipation device as claimed in claim 1, wherein, in the viewing direction of the first direction, the at least one spaced region is arranged to overlap with the plurality of heat sources.

16. The integrated cold plate heat dissipation device as claimed in claim 1 further includes a plurality of lead channels, wherein the inlet is diverted to the plurality of chambers through the plurality of lead channels.

17. The integrated cold plate heat dissipation device as claimed in claim 1 further includes a plurality of leading channels, wherein the plurality of leading channels are respectively disposed between the leading edge of each of the plurality of chambers and the inlet.

18. The integrated cold plate heat dissipation device as claimed in claim 1, wherein the plurality of chambers connecting the inlet and the at least one outlet are symmetrically arranged, and the central axis of the symmetry is parallel to the second direction.

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