CN115942724A - Liquid cooling heat dissipation plate - Google Patents
Liquid cooling heat dissipation plate Download PDFInfo
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- CN115942724A CN115942724A CN202310244507.0A CN202310244507A CN115942724A CN 115942724 A CN115942724 A CN 115942724A CN 202310244507 A CN202310244507 A CN 202310244507A CN 115942724 A CN115942724 A CN 115942724A
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Abstract
The invention discloses a liquid cooling heat dissipation plate which comprises a heat dissipation plate body and a plurality of heat dissipation fins, wherein the heat dissipation plate body is provided with a heat dissipation groove, a liquid inlet hole and a liquid outlet hole, the liquid inlet hole and the liquid outlet hole are communicated with the heat dissipation groove, the heat dissipation fins are vertically arranged in the heat dissipation groove, the heat dissipation fins are arranged in parallel, a heat dissipation channel is formed between any two adjacent heat dissipation fins, the heat dissipation groove is provided with a third side face, the liquid inlet hole is formed in the third side face, the heat dissipation channel comprises a middle heat dissipation channel and a side heat dissipation channel, the side heat dissipation channel is far away from the liquid inlet hole relative to the middle heat dissipation channel, and the width of the side heat dissipation channel is larger than that of the middle heat dissipation channel and/or the distance from the side heat dissipation channel to the third side face is larger than that of the middle heat dissipation channel to the third side face. The invention has simple structure, and improves the heat dissipation efficiency by changing the structure or the installation position of the heat dissipation fins.
Description
Technical Field
The invention relates to the technical field of cooling equipment, in particular to a liquid cooling heat dissipation plate.
Background
The liquid cooling heat dissipation technology is widely applied to the fields of servers, vehicles, batteries and the like (taking the servers as examples);
as shown in fig. 1, a liquid-cooled plate radiator is internally provided with a water channel, heat dissipation fins, circulating liquid and the like, wherein the water channel, the heat dissipation fins, the circulating liquid and the like are formed in the liquid-cooled plate radiator, a plurality of groups of heat dissipation fins are arranged, a heat dissipation channel is formed between any two adjacent heat dissipation fins, the widths of the heat dissipation channels are equal, the liquid circularly flows in a pipeline under the action of a water pump, the liquid flows away from a water cooling block on a device after absorbing the heat of the device, and the new low-temperature circulating liquid continuously absorbs the heat of the device, so that the purpose of heat dissipation is achieved.
As shown in fig. 2, when the cooling liquid passes through the micro heat dissipation fins, the middle path with low impedance (i.e., the heat dissipation channel in the middle) is preferentially selected to pass through, and little or no liquid flows through the two side areas with high impedance, so that the heat dissipation contact area is reduced, and the heat dissipation effect is poor. When the circulating liquid passes through the micro radiating fins, the middle area with lower impedance is preferentially selected to pass through, so that most of the internal flow channels of the micro fins on two sides do not pass through the circulating liquid, and the radiating effect is relatively poor.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a liquid cooling heat dissipation plate.
The invention provides a liquid-cooled heat dissipation plate which comprises a heat dissipation plate and heat dissipation fins, wherein the heat dissipation plate is provided with a heat dissipation groove, a liquid inlet hole and a liquid outlet hole, the liquid inlet hole and the liquid outlet hole are communicated with the heat dissipation groove, the heat dissipation fins are vertically arranged in the heat dissipation groove, the heat dissipation fins are arranged in parallel, a heat dissipation channel is formed between any two adjacent heat dissipation fins, the heat dissipation groove is provided with a third side face, the liquid inlet hole is formed in the third side face, the heat dissipation channel comprises a middle heat dissipation channel and a side heat dissipation channel, the side heat dissipation channel is far away from the liquid inlet hole relative to the middle heat dissipation channel, and the width of the side heat dissipation channel is larger than that of the middle heat dissipation channel and/or the distance from the side heat dissipation channel to the third side face is larger than that of the middle heat dissipation channel to the third side face.
On the basis of the technical scheme, as a further optimized scheme of the invention, the radiating fins are vertical to the third side face.
On the basis of any one of the above technical solutions, as a further optimized solution of the present invention, a branch flow guide channel is formed between the heat dissipation fins and the third side surface, a flow splitting block is arranged in the branch flow guide channel, and the flow splitting block is opposite to the liquid inlet hole.
On the basis of any one of the technical schemes, as a further optimized scheme of the invention, the side part of the shunting block is vertically and rotatably provided with a guide wheel, and the arrangement of the guide wheel is further convenient for guiding the cooling liquid to the side part of the branch flow guide channel, so that the cooling effect is increased; in particular, the guide wheel may be a cylindrical structure as in the prior art.
On the basis of any one of the above technical solutions, as a further optimized solution of the present invention, the width of the flow dividing block is smaller than the width of the liquid inlet hole.
On the basis of any one of the above technical solutions, as a further optimized solution of the present invention, the width of the side heat dissipation channels is greater than the width of the middle heat dissipation channel, the number of the middle heat dissipation channels and the number of the side heat dissipation channels are both multiple, and the sum of the widths of the multiple middle heat dissipation channels is not greater than the sum of the widths of the multiple side heat dissipation channels.
On the basis of any one of the above technical solutions, as a further optimized solution of the present invention, the width of one of the two adjacent side heat dissipation channels, which is relatively close to the middle heat dissipation channel, is smaller than the width of the other side heat dissipation channel, that is, if the two adjacent side heat dissipation channels are respectively a first side heat dissipation channel and a second side heat dissipation channel, and the first side heat dissipation channel is close to the middle heat dissipation channel relative to the second side heat dissipation channel, the width of the first side heat dissipation channel is smaller than the width of the second side heat dissipation channel.
On the basis of any one of the above technical solutions, as a further optimized solution of the present invention, a distance from the side heat dissipation channels to the third side surface is greater than a distance from the middle heat dissipation channel to the third side surface, the middle heat dissipation channels and the side heat dissipation channels are both provided in plurality, and a sum of widths of the middle heat dissipation channels is not greater than a sum of widths of the side heat dissipation channels.
On the basis of any one of the above technical solutions, as a further optimized solution of the present invention, a distance from one of the two adjacent side heat dissipation channels, which is relatively close to the middle heat dissipation channel, to the third side surface is smaller than a distance from the other side heat dissipation channel to the third side surface, that is, if the two adjacent side heat dissipation channels are the first side heat dissipation channel and the second side heat dissipation channel respectively, and the first side heat dissipation channel is close to the middle heat dissipation channel relative to the second side heat dissipation channel, a distance from the first side heat dissipation channel to the third side surface is smaller than a distance from the second side heat dissipation channel to the third side surface.
On the basis of any one of the above technical schemes, as a further optimized scheme of the invention, the liquid outlet hole is opposite to the liquid inlet hole.
In the liquid cooling heat dissipation plate, the distribution condition of the heat dissipation channels is changed by changing the distribution condition or the structure of the heat dissipation fins, so that the impedance of circulating liquid in the heat dissipation groove flowing through the side heat dissipation channels is reduced, and the heat dissipation effect is enhanced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a liquid-cooled plate structure according to the prior art;
FIG. 2 is a simulation diagram of a prior art liquid cooling plate Flotherm;
FIG. 3 is a schematic structural diagram of an embodiment of the present invention;
FIG. 4 is a top view of the present invention;
FIG. 5 is a Flotherm simulation diagram according to an embodiment of the invention;
FIG. 6 is a schematic structural diagram according to a second embodiment of the present invention;
FIG. 7 is a simulation diagram of Flotherm according to the second embodiment of the present invention;
FIG. 8 is a schematic diagram of a third embodiment of the present invention;
in the figure: 1. a heat dissipation plate; 10. a heat sink; 100. a first side; 101. a second side surface; 102. a third side; 103. a fourth side; 11. a liquid inlet hole; 12. a middle heat dissipation channel; 13. a lateral heat dissipation channel; 2. a shunting block; 3. heat dissipation fins; 4. a liquid inlet pipe; 5. a liquid outlet pipe; 6. a guide wheel.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like elements or elements having like or similar functionality throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It should be understood that the terms "lateral," "length," "width," "thickness," "upper," "lower," "inner," and the like are used in an orientation or positional relationship indicated in the drawings, which is for convenience in describing the present invention and for simplicity in description, and should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
The first embodiment is as follows: a liquid cooling heat dissipation plate 1 as shown in fig. 3-4, includes a heat dissipation plate 1, a shunting block 2, and heat dissipation fins 3, wherein:
the heat dissipation plate 1 is provided with a heat dissipation groove 10, the heat dissipation plate 1 is also provided with a liquid inlet pipe 4 and a liquid outlet pipe 5, the liquid inlet pipe 4 is opposite to the liquid outlet pipe 5, the liquid inlet pipe 4 and the liquid outlet pipe 5 are both arranged along the length direction of the heat dissipation groove 10, namely the liquid flowing directions in the liquid inlet pipe 4 and the liquid outlet pipe 5 are both along the length direction of the heat dissipation groove 10, the heat dissipation fins 3 are vertically fixed in the heat dissipation groove 10, the heat dissipation fins 3 are arranged along the length direction of the heat dissipation groove 10, the heat dissipation fins 3 are provided with a plurality of heat dissipation fins 3, the heat dissipation fins 3 are distributed in a row along the width direction of the heat dissipation groove 10, and a heat dissipation channel is formed between any two adjacent heat dissipation fins 3;
specifically, the heat sink 10 has a bottom surface, a first side surface 100, a second side surface 101, a third side surface 102 and a fourth side surface 103, wherein the first side surface 100, the third side surface 102, the second side surface 101 and the fourth side surface 103 are all perpendicular to the bottom surface and located above the bottom surface, the first side surface 100, the third side surface 102, the second side surface 101 and the fourth side surface 103 are all vertical surfaces, adjacent to each other in pairs and connected to each other to form a rectangular structure, the first side surface 100 and the second side surface 101 are opposite and parallel to each other, the third side surface 102 and the fourth side surface 103 are opposite and parallel to each other, the first side surface 100 is perpendicular to the third side surface 102, and the first side surface 100 is perpendicular to the fourth side surface 103; the first side 100 and the second side 101 are along the length direction of the heat sink 10, and the third side 102 and the fourth side 103 are along the width direction of the heat sink 10;
the liquid inlet pipe 4 is arranged on the third side surface 102, the liquid outlet pipe 5 is arranged on the fourth side surface 103, specifically, the third side surface 102 of the heat dissipation plate 1 is provided with a liquid inlet hole 11, the fourth side surface 103 is provided with liquid outlet holes, the liquid inlet hole 11 and the liquid outlet holes are both communicated with the heat dissipation groove 10, the liquid inlet pipe 4 is communicated with the liquid inlet hole 11, and the liquid outlet pipe 5 is connected with the liquid outlet holes;
specifically, the liquid inlet hole 11 is formed in the middle of the third side surface 102, that is: the distance from the liquid inlet hole 11 to the first side surface 100 and the second side surface 101 is the same;
the heat dissipation fins 3 are fixed on the bottom surface, the length direction of the heat dissipation fins 3 is parallel to the first side surface 100 and the second side surface 101, and a heat dissipation channel is formed between any two adjacent heat dissipation fins 3;
the heat dissipation channels comprise a middle heat dissipation channel 12 and side heat dissipation channels 13, the side heat dissipation channels 13 are far away from the liquid inlet hole 11 relative to the middle heat dissipation channel 12, namely the side heat dissipation channels 13 are close to the first side surface 100 or the second side surface 101 relative to the middle heat dissipation channel 12, namely the side heat dissipation channels 13 are provided with two groups, and the middle heat dissipation channel 12 is positioned between the two groups of side heat dissipation channels 13; the central heat dissipation channels 12 are provided with a plurality of central heat dissipation channels 12, the widths of the central heat dissipation channels 12 are equal, the widths of the lateral heat dissipation channels 13 are also provided with a plurality of central heat dissipation channels 12, and the sum of the widths of the central heat dissipation channels 12 is not more than the sum of the widths of the lateral heat dissipation channels 13;
the width of each middle heat dissipation channel 12 is smaller than that of the side heat dissipation channels 13;
the width of one lateral heat dissipation channel 12 of any two adjacent lateral heat dissipation channels 13, which is relatively close to the central heat dissipation channel 12, is smaller than that of the other lateral heat dissipation channel 13, that is: the width of the side heat dissipation channel 13 gradually increases from the side close to the middle heat dissipation channel 12 to the channel width far away from the middle heat dissipation channel 12;
the lengths of the radiating fins 3 are equal, a rectangular liquid guide channel is formed on one side, opposite to the third side face 102, of each radiating fin 3, the liquid guide channel is communicated with the radiating channel, and liquid in the liquid inlet pipe 4 enters the radiating channel through the liquid guide channel and then flows out of the liquid outlet pipe 5;
the plurality of radiating fins 3 are all vertical to the third side surface 102 of the radiating groove 10, a branch flow guide channel is formed between the third side surface 102 and the radiating fins 3, and the radiating channel is communicated with the branch flow guide channel;
the shunting block 2 is arranged on the bottom surface of the heat radiating groove 10 and is opposite to the liquid inlet hole 11, the width of the shunting block 2 is smaller than that of the liquid inlet hole 11, and the height of the shunting block 2 is slightly smaller than that of the heat radiating fins 3;
the heat dissipation fins 3 and the heat dissipation plate 1 are integrally formed by using relieved teeth, and the heat dissipation plate 1 is made of copper materials, and the heat dissipation fins 3 are made of C1100 (pure copper);
the mechanism of the above embodiment was subjected to the Flotherm simulation, with the parameters set to: the heat dissipation plate 1 and the heat dissipation fins 3 are made of the following materials: cu, C1100; the height of the heat dissipation plate 1 is 1.5mm; thickness/Pitch (inclination) of the heat radiation fin 3: 0.2mm/0.74mm, the height of the radiating fin 3 is: the simulation result of the temperature of the fluid at 40 ℃ and the flow rate of 40 l/min, which is 5mm, is shown in fig. 5, and it can be seen that after the distance between the heat dissipation fins 3 at both sides increases, the impedance decreases correspondingly, and the more the circulating liquid passes through the two sides, the more the heat dissipation effect is increased.
Example two: as shown in fig. 6, the present embodiment is different from the above embodiments in that:
in the embodiment, the widths of the heat dissipation channels are equal, the distance from the side heat dissipation channel 13 to the third side 102 is greater than the distance from the middle heat dissipation channel 12 to the third side 102, the number of the middle heat dissipation channels 12 is multiple, the distances from the multiple middle heat dissipation channels 12 to the third side 102 are equal, the number of the side heat dissipation channels 13 is also multiple, and the sum of the widths of the multiple middle heat dissipation channels 12 is not greater than the sum of the widths of the multiple side heat dissipation channels 13;
and the distance from the multiple side heat dissipation channels 13 to the third side 102 gradually increases from the side close to the middle heat dissipation channel 12 to the side far from the middle heat dissipation channel 12, preferably, the side of the side opposite to the third side 102 of the heat dissipation fins 3 of the multiple side heat dissipation channels 13 is integrally inclined by an inclined plane, and the inclined plane gradually inclines from the side close to the middle heat dissipation channel 12 to the side far from the middle heat dissipation channel 12 to the direction far from the third side 102;
namely: the distance from the radiator fins 3 to the fourth side 103 is equal, but the distance from the radiator fins 3 of the side heat dissipation channels 13 to the third side 102 is greater than the distance from the radiator fins 3 of the middle heat dissipation channel 12 to the third side 102; and the distance from one side heat dissipation channel 13 of any two adjacent side heat dissipation channels 13, which is relatively close to the middle heat dissipation channel 12, to the third side 102 is smaller than the distance from the other side heat dissipation channel 13 to the third side 102;
preferably, as shown in fig. 6, the distance from the heat dissipation fins 3 of the side heat dissipation channels 13 to the third side surface 102 in the present embodiment is gradually increased from the side close to the liquid inlet hole 11 to the side far from the liquid inlet hole 11.
The mechanism of the above embodiment was subjected to the Flotherm simulation, with the parameters set to: the heat dissipation plate 1 and the heat dissipation fins 3 are made of the following materials: cu, C1100 (pure copper); the height of the heat dissipation plate 1 is 1.5mm; thickness of heat dissipation fin 3/Pitch: 0.2mm/0.74mm, the height of the radiating fins 3 is as follows: 5mm, the flow rate of the fluid is set to 40 l/min, the temperature of the fluid is 40 ℃, the simulation result is shown in fig. 7, after the shape of the radiating fin 3 is optimized, the impedance of two sides can be effectively reduced, the circulating liquid flow area is increased, the effective area is increased, and the radiating effect is increased.
Example three: as shown in fig. 8, the present embodiment is different from the above embodiments in that the side portion of the diverter block 2 is vertically and rotatably mounted with a guide wheel 6, and preferably, the outer diameter of the guide wheel 6 is larger than the thickness of the diverter block 2; and the liquid firstly washes the guide wheel 6 and then impacts the flow dividing block 2, the liquid drives the guide wheel 6 to vertically rotate, and the vertically rotating guide wheel 6 drives the liquid to flow towards the side heat dissipation channel 13, so that the heat dissipation effect is further improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a liquid cooling heating panel, includes heating panel (1) and heat dissipation fin (3), it has radiating groove (10), feed liquor hole (11) and goes out the liquid hole to open on heating panel (1), feed liquor hole (11) with go out the liquid hole with radiating groove (10) intercommunication, heat dissipation fin (3) vertical installation be in radiating groove (10), heat dissipation fin (3) are equipped with a plurality ofly, and arbitrary adjacent two form radiating channel between heat dissipation fin (3), a serial communication port, radiating groove (10) have third side (102), set up in feed liquor hole (11) on third side (102), radiating channel includes middle part radiating channel (12) and lateral part radiating channel (13), lateral part radiating channel (13) is relative middle part radiating channel (12) is kept away from feed liquor hole (11), the width of lateral part radiating channel (13) is greater than the width of middle part radiating channel (12) and/or lateral part radiating channel (13) arrive the distance of third side (102) is greater than the distance of middle part radiating channel (12) is to third side (102).
2. A liquid-cooled cold plate according to claim 1, wherein said cooling fins (3) are perpendicular to said third side (102).
3. A liquid-cooled cooling plate according to claim 1, wherein a branch flow guide channel is formed between the cooling fins (3) and the third side surface (102), and a flow dividing block (2) is arranged in the branch flow guide channel, and the flow dividing block (2) is opposite to the liquid inlet hole (11).
4. A liquid-cooled cold plate according to claim 3, wherein said diverter block (2) is provided with guide wheels (6) for vertical rotation on its sides.
5. A liquid-cooled cold plate according to claim 3, wherein said diverter block (2) has a width smaller than the width of said inlet opening (11).
6. A liquid-cooled cold plate according to any of claims 1 to 5, wherein said side channels (13) have a width greater than the width of said central channel (12), and wherein a plurality of said central channels (12) and said side channels (13) are provided, the sum of the widths of a plurality of said central channels (12) being not greater than the sum of the widths of a plurality of said side channels (13).
7. A liquid-cooled cold plate according to claim 6, wherein one (13) of any two adjacent ones of said side heat dissipating channels (13) relatively close to said central heat dissipating channel (12) has a width smaller than the width of the other one of said side heat dissipating channels (13).
8. A liquid-cooled cold plate according to any of claims 1 to 5, wherein said side channels (13) are located at a distance from said third side (102) which is greater than the distance from said central channel (12) to said third side (102), wherein a plurality of said central channels (12) and a plurality of said side channels (13) are provided, and wherein the sum of the widths of a plurality of said central channels (12) is not greater than the sum of the widths of a plurality of said side channels (13).
9. A liquid-cooled heat sink according to claim 8, wherein one of said side heat sink channels (13) of any adjacent two of said side heat sink channels (13) relatively close to said central heat sink channel (12) is located at a distance from said third side (102) that is less than the distance from the other of said side heat sink channels (13) to said third side (102).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310244507.0A CN115942724B (en) | 2023-03-15 | 2023-03-15 | Liquid cooling heating panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310244507.0A CN115942724B (en) | 2023-03-15 | 2023-03-15 | Liquid cooling heating panel |
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| CN115942724A true CN115942724A (en) | 2023-04-07 |
| CN115942724B CN115942724B (en) | 2023-06-30 |
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| CN115942724B (en) | 2023-06-30 |
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