Liquid cooling radiator

Abstract

The utility model relates to a liquid cooling radiator, which comprises a base and a top plate, the base is provided with a plurality of radiating fins arranged in parallel, at least a part of the radiating fins are respectively provided with a notch, the notches jointly form a channel, the top plate is combined with and covers the radiating fins corresponding to the base, and the top plate is provided with a liquid inlet, a liquid outlet, a separation baffle and a convex rib. The partition baffle is parallel to the heat dissipation fins and divides the heat dissipation fins into a liquid inlet fin set and a liquid outlet fin set, the liquid inlet corresponds to the liquid inlet fin set, the liquid outlet corresponds to the liquid outlet fin set, the protruding ribs are contained in the channels and abut against the corresponding heat dissipation fins, and the protruding ribs are perpendicular to the heat dissipation fins and the partition baffle; therefore, cooling liquid can be blocked by the convex ribs to flow to the bottom when passing through the liquid inlet fin group, so that the heat dissipation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid cooling heat dissipation, and more particularly to a liquid cooling heat sink. Background Technology

[0002] With the rapid development of electronic technology, various electronic devices and equipment are moving towards high efficiency and thinness, generating a large amount of heat during operation. Traditional air cooling or finned heat dissipation alone is no longer sufficient to meet these demands. Therefore, liquid cooling radiators, such as liquid cooling blocks, liquid cooling plates, or liquid cooling radiators, have gradually become the mainstream cooling method. Liquid cooling radiators are typically installed on heat sources such as motherboards or processors, and coolant is supplied to them, flowing through multiple internal heat dissipation fins to absorb the heat generated by the heat source and achieve a cooling effect.

[0003] However, existing liquid cooling radiators are limited by their size, which often results in the coolant staying inside for too short a time. This limits the amount of heat energy that the coolant can absorb, thus failing to effectively exert the cooling efficiency of liquid cooling. Therefore, how to effectively increase the heat absorption and residence time of the coolant within a limited volume to improve heat dissipation efficiency is a shortcoming that urgently needs to be addressed.

[0004] In view of this, the inventor has devoted himself to research and applied theoretical principles to address the shortcomings of the prior art, and has made every effort to solve the above-mentioned problems, which is the target of the inventor's improvement. Utility Model Content

[0005] The main purpose of this invention is to allow the coolant to flow to the bottom by being blocked by the ribs when passing through the inlet fin assembly, thereby adjusting the flow rate of the coolant and increasing the heat absorption of the coolant, thus improving the heat dissipation efficiency of the liquid cooler.

[0006] To achieve the above objectives, this utility model provides a liquid-cooled radiator, including a base and a top plate. The base has a plurality of parallel heat dissipation fins, and at least a portion of each heat dissipation fin has a notch, which together form a channel. The top plate is connected to the base and covers each heat dissipation fin. The top plate has a liquid inlet, a liquid outlet, a partition baffle, and a rib. The partition baffle is parallel to each heat dissipation fin and divides each heat dissipation fin into a liquid inlet fin group and a liquid outlet fin group. The liquid inlet is configured corresponding to the liquid inlet fin group, and the liquid outlet is configured corresponding to the liquid outlet fin group. The rib is accommodated in the channel and abuts against the corresponding heat dissipation fin. The rib is perpendicular to each heat dissipation fin and the partition baffle.

[0007] In one embodiment of the present invention, each notch is formed on each heat dissipation fin of the liquid inlet fin assembly.

[0008] In one embodiment of the present invention, the rib extends from the top plate to abut against the liquid-entry fin assembly.

[0009] In one embodiment of this utility model, the ratio of the depth of the channel to the height of the liquid-filled fin assembly is between 0.1 and 1.

[0010] In one embodiment of this utility model, the ratio of the depth of the channel to the height of the liquid-filled fin assembly is 0.5.

[0011] In one embodiment of this utility model, the protruding rib is located between the liquid inlet and the liquid outlet.

[0012] In one embodiment of this utility model, the liquid inlet and the liquid outlet are arranged diagonally on opposite sides of the partition baffle.

[0013] In one embodiment of this utility model, the ratio of the volume of the liquid inlet fin group to the volume of the liquid outlet fin group is between 1 and 5.

[0014] In one embodiment of this utility model, the ratio of the volume of the liquid inlet fin group to the volume of the liquid outlet fin group is 2.

[0015] In one embodiment of the present invention, the top plate also has a surrounding wall, in which the liquid inlet, liquid outlet, partition baffle and protruding rib are all located, and the surrounding wall surrounds each heat dissipation fin and abuts against the base.

[0016] The liquid-cooled radiator of this invention has channels formed on at least a portion of the heat dissipation fins, and a top plate with corresponding ribs that are accommodated in the channels and abut against the corresponding heat dissipation fins. The heat dissipation fins are divided into inlet fin groups and outlet fin groups corresponding to the inlet and outlet of the liquid, respectively, by means of a partition baffle. Therefore, when the coolant passes through the inlet fin group, it is blocked by the ribs and flows to the bottom, thereby adjusting the flow rate of the coolant and increasing the heat absorption of the coolant, thereby improving the heat dissipation efficiency of the liquid-cooled radiator. Attached Figure Description

[0017] Figure 1 This is an exploded perspective view of the liquid-cooled heat sink of this utility model.

[0018] Figure 2 This is a three-dimensional view of the base of the liquid-cooled radiator of this utility model.

[0019] Figure 3 This is an exploded perspective view of the liquid-cooled radiator of this utility model in use.

[0020] Figure 4 This is a cross-sectional side view of the liquid-cooled radiator of this utility model in use.

[0021] Figure 5 This is another cross-sectional side view of the liquid-cooled radiator of this utility model in use.

[0022] Figure 6This is a top-section view of the liquid-cooled radiator of this utility model in use.

[0023] Figure 7 This is another cross-sectional top view of the liquid-cooled radiator of this utility model in use.

[0024] In the attached figures, the following labels are used:

[0025] 10: Base

[0026] 101:Substrate

[0027] 11: Heat dissipation fins

[0028] 111: Liquid-filled fin assembly

[0029] 112: Liquid outlet fin assembly

[0030] 113: Gap

[0031] 114: Channel

[0032] 12: Positioning Groove

[0033] 20: Top Slab

[0034] 21: wall

[0035] 22: Liquid inlet

[0036] 23:Liquid outlet

[0037] 24: Divider

[0038] 25: Convex Rib

[0039] A: Mounting plate

[0040] A1: Through groove

[0041] A2: Positioning Block

[0042] B: Bolt Detailed Implementation

[0043] In the description of this utility model, it should be understood that the terms "front side", "rear side", "left side", "right side", "front end", "rear end", "end", "longitudinal", "lateral", "vertical", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting conditions of this utility model.

[0044] Unless otherwise defined, terms such as "substantially" and "approximately" are used to describe and narrate small changes. When used in connection with an event or situation, these terms may include the exact moment the event or situation occurred, or an approximate point in time. For example, when used in connection with a numerical value, these terms may include a range of variation less than or equal to ±10% of that value, such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1%, less than or equal to ±0.5%, less than or equal to ±0.1%, or less than or equal to ±0.05%.

[0045] The detailed description and technical content of this utility model will be explained below with reference to the accompanying drawings. However, the accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0046] This utility model provides a liquid-cooled radiator for attachment to at least one heat source (not shown in the figure), through which a coolant (not shown in the figure, only the direction of flow is indicated by arrows) flows to cool and dissipate heat from the heat source. Please refer to [the following text is missing from the original] first. Figures 1 to 2 As shown, the liquid-cooled radiator of this utility model includes a base 10 and a top plate 20.

[0047] In this embodiment, the base 10 is made of a metal material with good thermal conductivity, such as copper or aluminum. However, this invention does not impose any particular limitation on the specific material, as long as the base 10 is made of a material with good thermal conductivity. In this embodiment, the base 10 is a rectangular substrate 101, but the shape of the base 10 can be adjusted accordingly according to different needs. The base 10 has a plurality of parallel heat dissipation fins 11, and a flow channel (not labeled) is formed between two adjacent heat dissipation fins 11. Specifically, each heat dissipation fin 11 is integrally formed on the upper surface of the substrate 101 to constitute the base 10. In this embodiment, each heat dissipation fin 11 is directly integrally formed on the base 10 by skiving, thereby enabling the formation of an integral high-density heat dissipation fin 11 on the base 10, thereby effectively improving heat dissipation efficiency and avoiding increased thermal resistance due to welding of the fins. Furthermore, in this embodiment, each heat dissipation fin 11 is divided into two areas to form a liquid inlet fin group 111 and a liquid outlet fin group 112, and a positioning groove 12 is formed between the liquid inlet fin group 111 and the liquid outlet fin group 112.

[0048] At least a portion of each heat dissipation fin 11 has a notch 113 formed therein. In this embodiment, each notch 113 is formed on each heat dissipation fin 11 of the liquid inlet fin group 111 to form a channel 114. However, this invention is not limited thereto. For example, each notch 113 can also be formed on each heat dissipation fin 11 of the liquid outlet fin group 112, or each notch 113 can be formed on each heat dissipation fin 11 of both the liquid inlet fin group 111 and the liquid outlet fin group 112. Specifically, each notch 113 is formed on the side of the corresponding heat dissipation fin 11 away from the base 10, that is, each notch 113 is formed on the top of the corresponding heat dissipation fin 11. In particular, in this embodiment, the base 10 first forms a groove on the upper surface of a substrate, and then a high-density liquid inlet fin group 111 and liquid outlet fin group 112 are integrally formed on the upper surface of the substrate by skiving. This transforms the groove into a channel 114 located on the side of the liquid inlet fin group 111 away from the upper surface of the substrate, thereby achieving the effect of forming a channel 114 in the high-density skived fin without damaging the skived fin structure. Moreover, the processing method is simple and low-cost.

[0049] In this embodiment, the top plate 20 is made of a metal material with good thermal conductivity, such as copper or aluminum. However, this invention does not impose any particular limitation on the specific material, as long as the top plate 20 is made of a material with good thermal conductivity. Please refer to the following: Figure 4 and Figure 5 As shown, the top plate 20 corresponds to the base 10 and is attached to the top of each heat dissipation fin 11. Specifically, in this embodiment, the top plate 20 is welded to the base 10, but this invention is not limited thereto. The top plate 20 has a surrounding wall 21, a liquid inlet 22, a liquid outlet 23, a partition baffle 24, and at least one protruding rib 25. The liquid inlet 22, the liquid outlet 23, the partition baffle 24, and the protruding rib 25 are all located within the surrounding wall 21, and the surrounding wall 21 surrounds each heat dissipation fin 11 of the base 10 and abuts against the base 10. Please refer to the accompanying documentation. Figure 6 and Figure 7As shown, the partition baffle 24 is parallel to each heat dissipation fin 11 and abuts against the positioning groove 12 of the base 10, dividing each heat dissipation fin 11 into an inlet fin group 111 and an outlet fin group 112. The inlet 22 and outlet 23 are located on opposite sides of the partition baffle 24. In other words, the inlet 22 corresponds to the inlet fin group 111, and the outlet 23 corresponds to the outlet fin group 112. The ribs 25 are perpendicular to each heat dissipation fin 11 and the partition baffle 24. The inlet 22 is located at the point of highest heat energy in the heat source, allowing the coolant to cool and dissipate heat at the point of highest heat energy in the heat source at the lowest possible temperature to achieve optimal heat dissipation. Specifically, the rib 25 is housed in the channel 114 of the base 10 and abuts against the corresponding heat dissipation fins 11. That is, in this embodiment, the rib 25 extends from the top plate 20 to abut against the liquid inlet fin group 111 of the base 10.

[0050] By forming channels 114 in at least a portion of the heat dissipation fins 11, and having ribs 25 correspondingly housed in the channels 114 and abutting against each heat dissipation fin 11 in the top plate 20, and by dividing each heat dissipation fin 11 into inlet fin groups 111 and outlet fin groups 112 corresponding to inlet ports 22 and outlet ports 23 respectively by the partition baffle 24, the coolant can be blocked by the ribs 25 when passing through the inlet fin group 111 and flow to the bottom of each flow channel of the inlet fin group 111, thereby adjusting the flow rate of the coolant and increasing the heat absorption of the coolant, thereby improving the heat dissipation efficiency of the liquid-cooled radiator of this invention. More specifically, since the ribs 25 are laterally blocked at the top of each flow channel of the liquid inlet fin assembly 111 in the left-right direction, the coolant is forced to flow towards the bottom of each flow channel, thereby increasing the flow rate. Furthermore, because the coolant flows closer to the heat source, it can absorb more heat energy, thereby effectively improving the heat dissipation efficiency of the liquid-cooled radiator of this invention for the heat source.

[0051] Please see Figure 3 As shown, the liquid-cooled radiator of this invention can be fixed to a mounting plate A. Specifically, the liquid-cooled radiator of this invention can be locked to the mounting plate A by multiple bolts B, but the fixing method of the liquid-cooled radiator of this invention is not limited to this. The mounting plate A has a through groove A1 corresponding to the heat source, so that the base plate 101 of the base 10 can pass through the through groove A1 to the heat source. Furthermore, in order to effectively position the liquid-cooled radiator of this invention and prevent the liquid-cooled radiator of this invention from deflecting or shifting when the bolts B are locked, the mounting plate A is also provided with multiple positioning blocks A2, so as to restrict the liquid-cooled radiator of this invention to a position by the positioning blocks A2 to facilitate the locking of the bolts B.

[0052] To further explain, such as Figure 4As shown, the ratio of the depth of the channel 114 to the height of the liquid inlet fin assembly 111 is between 0.1 and 1, thereby forcing the coolant to flow to the bottom of each channel due to the lateral obstruction of the ribs 25. Through experiments and tests by the inventors, in this embodiment, the ratio of the depth of the channel 114 to the height of the liquid inlet fin assembly 111 is approximately 0.5, that is, the depth of the channel 114 is approximately half the height of each heat dissipation fin 11 in the liquid inlet fin assembly 111. This achieves optimal turbulence for the coolant and simultaneously ensures optimal heat dissipation.

[0053] Furthermore, in this embodiment, the inlet 22 and outlet 23 are arranged diagonally on opposite sides of the partition baffle 24, and the protruding rib 25 is located between the inlet 22 and outlet 23, but this utility model is not limited thereto. Specifically, with Figure 1 , Figure 6 and Figure 7 For example, in this embodiment, the liquid inlet 22 is located above the liquid inlet fin assembly 111 and adjacent to the rear side of the base 10, while the liquid outlet 23 is located above the liquid outlet fin assembly 112 and adjacent to the front side of the base 10. This maximizes the extension of the flow path of the coolant to improve heat absorption and dissipation efficiency, and significantly shortens the time difference between the coolant being diverted from the liquid inlet 22 to the liquid outlet 23. However, in other embodiments, the liquid inlet 22 and the liquid outlet 23 can also be mirror-symmetrically arranged on opposite sides of the partition baffle 24 as needed. Furthermore, when the coolant enters each flow channel of the inlet fin assembly 111 from the inlet 22 and is split in the front-to-back direction, the flow path of the coolant flowing in the front direction is longer than that of the coolant flowing in the back direction. Therefore, by placing the rib 25 between the inlet 22 and the outlet 23, the flow rate of the coolant flowing in the front direction can be increased, thereby adjusting the time difference of the coolant entering each flow channel of the outlet fin assembly 112 from the front-to-back direction.

[0054] It should be noted that, although the number of channels 114 and the number of ribs 25 shown in the accompanying drawings and description of this embodiment are both only one, the present invention is not limited to this. The number of channels 114 and the number of ribs 25 can be adjusted according to the number of areas where the flow rate needs to be increased. For ease of understanding and explanation, only one of each is shown in the present invention. However, those skilled in the art should be able to make different changes and derivations based on the present invention. Therefore, two or more channels 114 and two or more ribs 25 are also within the protection scope of the present invention. This is hereby stated.

[0055] To further explain, such as Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, the volume ratio of the inlet fin assembly 111 to the outlet fin assembly 112 is between 1 and 5, thereby adjusting the flow rate of the coolant in the inlet fin assembly 111 and the outlet fin assembly 112, thus improving the heat dissipation efficiency of the liquid-cooled radiator of this invention. Since the position of the inlet 22 corresponds to the point of highest heat energy in the heat source, through the inventor's experiments and tests, the volume ratio of the inlet fin assembly 111 to the outlet fin assembly 112 in this embodiment is approximately 2, that is, the volume of the inlet fin assembly 111 is approximately twice the volume of the outlet fin assembly 112. This allows for optimized distribution of the coolant flow rate in the inlet fin assembly 111 and the outlet fin assembly 112, and achieves the best cooling effect on the heat source.

[0056] The liquid-cooled radiator of this invention has channels 114 formed in at least a portion of the heat dissipation fins 11, and a top plate 20 has corresponding ribs 25 that are accommodated in the channels 114 and abut against the corresponding heat dissipation fins 11. The heat dissipation fins 11 are divided into inlet fin groups 111 and outlet fin groups 112 corresponding to the inlet fins 22 and outlet fins 23, respectively, by a partition baffle 24. Therefore, the coolant can be blocked by the ribs 25 when passing through the inlet fin group 111 and flow to the bottom, thereby adjusting the flow rate of the coolant and increasing the heat absorption of the coolant, thereby improving the heat dissipation efficiency of the liquid-cooled radiator.

[0057] In summary, the foregoing disclosure of this utility model is intended to enable those skilled in the art to clearly understand the technical content of this utility model and implement it accordingly, and is not intended to limit the scope of protection of the claims of this utility model. In addition, this utility model may have other embodiments not listed. Without departing from the spirit and essence of this utility model, those skilled in the art should be able to devise various corresponding changes and modifications based on this utility model, but all such changes and modifications should fall within the protection scope of the patent applications filed for this utility model.

Claims

1. A liquid-cooled heat spreader, comprising: include: A base having a plurality of parallel heat dissipation fins, at least a portion of the plurality of heat dissipation fins having a notch, and the notches together forming a channel; and A top plate, corresponding to the base and covering each of the heat dissipation fins, the top plate has a liquid inlet, a liquid outlet, a partition baffle and a rib, the partition baffle is parallel to each of the heat dissipation fins and divides each of the heat dissipation fins into a liquid inlet fin group and a liquid outlet fin group, the liquid inlet is configured corresponding to the liquid inlet fin group and the liquid outlet is configured corresponding to the liquid outlet fin group, the rib is accommodated in the channel and abuts against the corresponding plurality of heat dissipation fins, the rib is perpendicular to each of the heat dissipation fins and the partition baffle.

2. The liquid-cooled heat sink as described in claim 1, characterized in that, Each of the aforementioned notches is formed on the plurality of heat dissipation fins of the liquid inlet fin assembly.

3. The liquid-cooled heat sink as described in claim 2, characterized in that, The ribs extend from the top plate to abut against the liquid-entry fin assembly.

4. The liquid-cooled heat sink as described in claim 2, characterized in that, The ratio of the depth of the channel to the height of the liquid-filled fin assembly is between 0.1 and 1.

5. The liquid-cooled heat sink as described in claim 4, characterized in that, The ratio of the depth of the channel to the height of the liquid-entry fin assembly is 0.

5.

6. The liquid-cooled heat sink as described in claim 1, characterized in that, The rib is located between the liquid inlet and the liquid outlet.

7. The liquid-cooled heat sink as described in claim 1, characterized in that, The inlet and outlet are diagonally positioned on opposite sides of the partition baffle.

8. The liquid-cooled heat sink as described in claim 1, characterized in that, The ratio of the volume of the liquid inlet fin group to the volume of the liquid outlet fin group is between 1 and 5.

9. The liquid-cooled heat sink as described in claim 8, characterized in that, The ratio of the volume of the liquid inlet fin group to the volume of the liquid outlet fin group is 2.

10. The liquid-cooled heat sink as described in claim 1, characterized in that, The top plate also has a surrounding wall, in which the liquid inlet, the liquid outlet, the partition baffle and the protruding rib are all located. The surrounding wall surrounds each of the heat dissipation fins and abuts against the base.

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