Liquid cooling plate with automatic flow adjustment

Abstract

The utility model discloses a liquid cooling panel of automatic regulation flow, its characterized in that, including: cooling area, including liquid inlet, flow channel and first liquid outlet, flow regulation area, including accommodating groove, the memory metal sheet of accommodating in accommodating groove, and second liquid outlet, the groove wall of accommodating groove has an inclined plane, and the second liquid outlet is located at the inclined plane, cooling liquid, from the liquid inlet into flow channel, from flow channel through first liquid outlet and enter accommodating groove, then flow from second liquid outlet, the memory metal sheet has the adjustment unit, and the adjustment unit leans on the inclined plane, the memory metal sheet can automatically regulate the size of second liquid outlet according to the temperature of cooling liquid in accommodating groove in the utility model, thereby adjusting the flow of liquid cooling panel.

Description

[Technical Field]

[0001] This utility model relates to a liquid cooling plate, and more particularly to a liquid cooling plate with automatic flow regulation. [Background Technology]

[0002] With the rapid development of electronic information technology and the rise of AI, the power of chips is increasing. How to better solve the heat dissipation problem of chips and ensure their operational stability has become a research hotspot. Cold plate liquid cooling technology, as the most mature liquid cooling method, is widely used in the field of chip heat dissipation technology. Cold plate liquid cooling refers to a non-contact liquid cooling technology that uses coolant flowing through channels inside a cold plate to cool the heat source through heat transfer. The cold plate is installed on the hot surface of the chip that needs cooling, transferring the heat generated by the components to the heat exchanger of an external cooling distribution unit, and controlling the coolant flow rate through the system of this cooling distribution unit. However, this heat dissipation control is relatively simple and lagging, and cannot meet the needs of scenarios where the heat generation of the chip changes continuously due to changes in the operating frequency, easily leading to waste of flow rate and power consumption.

[0003] Therefore, it is necessary to design a liquid cooling plate with automatically adjustable flow rate to overcome the above problems. [Utility Model Content]

[0004] The purpose of this invention is to provide a liquid cooling plate with automatic flow regulation, wherein a memory metal sheet is set in the flow regulation area, and the memory metal sheet can automatically adjust the flow of the liquid cooling plate according to the temperature of the coolant in the receiving tank.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatically adjustable flow rate liquid cooling plate, characterized in that it comprises: a cooling zone including an inlet, a flow channel, and a first outlet; a flow rate adjustment zone including a receiving tank, a shape memory metal sheet housed in the receiving tank, and a second outlet, wherein the wall of the receiving tank has an inclined surface, and the second outlet is disposed on the inclined surface; coolant enters the flow channel from the inlet, passes through the flow channel and the first outlet into the receiving tank, and then flows out from the second outlet; the shape memory metal sheet has an adjustment part, and the shape memory metal sheet can switch between a low-temperature phase and a high-temperature phase according to the temperature of the coolant in the receiving tank; when the shape memory metal sheet is in the low-temperature phase, the adjustment part abuts against the inclined surface, and the second outlet decreases; when the shape memory metal sheet is in the high-temperature phase, the adjustment part moves along the inclined surface, and the second outlet increases.

[0007] Furthermore, the line connecting the center of the first liquid outlet and the center of the second liquid outlet is perpendicular to the inclined surface.

[0008] Furthermore, the flow regulation area is located behind the cooling area, and the inclined surface bends forward and extends into an arc surface. The arc surface is located on the left side wall of the receiving groove and convexes to the left. The shape memory metal sheet has a main body connected to the regulation part. When the coolant temperature exceeds the high-temperature deformation temperature of the shape memory metal sheet, the main body abuts against the arc surface.

[0009] Furthermore, the first liquid outlet is located in front of the second liquid outlet. Along the front-back direction, the projection of the second liquid outlet is located to the left of the projection of the first liquid outlet, and the projection of the second liquid outlet partially overlaps with the projection of the first liquid outlet.

[0010] Furthermore, the width of the adjusting part is greater than the diameter of the second liquid outlet. When the shape memory metal sheet is in the low temperature phase, the adjusting part blocks the second liquid outlet, thereby reducing the size of the second liquid outlet.

[0011] Furthermore, the adjusting part is provided with a through hole for coolant to flow through.

[0012] Furthermore, the flow regulation zone includes a fixing member, the shape memory metal sheet has a fixing part, the fixing part is fixed to the fixing member, the fixing member is located on the left side of the first liquid outlet, the fixing part is located between the fixing member and the left side wall of the receiving tank, the fixing member extends rearward with a blocking part, the blocking part is used to block the coolant at the first liquid outlet from flowing to the left.

[0013] Furthermore, the receiving tank has a buffer tank, which is located on opposite sides of the first liquid outlet, as is the shape memory metal sheet.

[0014] Furthermore, the receiving tank also has a buffer surface, which is located between the second liquid outlet and the buffer tank, connecting the inclined surface and the wall of the buffer tank.

[0015] Furthermore, when the shape memory metal sheet is in the low-temperature phase, the shielding area of ​​the adjustment part is greater than half the area of ​​the second liquid outlet; when the shape memory metal sheet is in the high-temperature phase, the adjustment part does not shield the second liquid outlet or the shielding area of ​​the adjustment part is less than half the area of ​​the second liquid outlet.

[0016] Compared with the prior art, the liquid cooling plate provided by this utility model has the following beneficial effects:

[0017] When the coolant temperature in the reservoir is low, the shape memory metal sheet is in the low-temperature phase. The adjusting part, abutting against the inclined surface, blocks the second outlet, reducing the size of the second outlet and thus decreasing the coolant flow rate at the second outlet, thereby reducing power consumption. In this case, the pressure of the coolant on the adjusting part increases. The inclined surface allows the adjusting part to be firmly abutted against the inclined surface, ensuring the stability of the adjusting part's blocking position. When the coolant temperature rises to a certain level, the shape memory metal sheet deforms and enters the high-temperature phase. During the deformation of the shape memory metal sheet, the adjusting part slides away from the second outlet along the inclined surface, increasing the size of the second outlet and thus increasing the coolant flow rate at the second outlet. [Attached Image Description]

[0018] Figure 1 This is a schematic diagram of the liquid cooling plate of this utility model;

[0019] Figure 2 This is a top view of the liquid-cooled plate substrate of this utility model;

[0020] Figure 3 This is a cross-sectional view of the flow regulation zone when the shape memory metal sheet of this utility model is in the low-temperature phase;

[0021] Figure 4 This is a cross-sectional view of the flow regulation zone when the shape memory metal sheet of this utility model is in the high-temperature phase;

[0022] Figure 5 This is a front view of the substrate of the liquid cooling plate of this utility model.

[0023] Explanation of reference numerals in the accompanying drawings for the specific implementation methods:

[0024] Substrate 100 Cooling Zone 1 Liquid inlet 11 Flow channel 12 First liquid outlet 13 Flow regulation zone 2 Receiving slot 21 Inclined surface 211 Curved surface 212 Memory Metal Sheet 22 Fixing part 221 Blocking section 2211 Main body 222 Adjustment unit 223 Through hole 2231 Second liquid outlet 23 Fastener 24 Buffer slot 25 Buffer surface 26 Cover plate 200

Detailed Implementation Methods

[0025] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0026] The liquid cooling plate of this utility model defines the left-right direction as the X-axis, the leftward direction as the positive X-axis direction, the front-back direction as the Y-axis, the forward direction as the positive Y-axis direction, the up-down direction as the Z-axis, the upward direction as the positive Z-axis direction, and the horizontal direction as perpendicular to the up-down direction.

[0027] like Figure 1 and Figure 2 As shown, this utility model provides an automatically adjustable flow liquid cooling plate, including a base plate 100 and a cover plate 200 fixed to each other. The base plate 100 includes a cooling zone 1, a flow regulating zone 2, and a coolant flowing in the cooling zone 1 and the flow regulating zone 2, wherein the coolant is water or other liquids with high specific heat capacity.

[0028] Cooling zone 1 includes liquid inlet 11, flow channel 12, and first liquid outlet 13, wherein liquid inlet 11 is located in front of first liquid outlet 13. Of course, in other embodiments, the position of liquid inlet 11 can be set arbitrarily, such as above, below or behind first liquid outlet 13.

[0029] The cooling zone 1 is in contact with the heat source below. The coolant enters the flow channel 12 from the inlet 11 and exchanges heat with the heat source. After absorbing heat, the coolant enters the flow regulation zone 2 through the first outlet 13. The heat source can be a chip or other electronic components that need to dissipate heat.

[0030] The flow regulation zone 2 includes a receiving tank 21, a shape memory metal sheet 22, a second liquid outlet 23, a fixing member 24, and a buffer tank 25, wherein the shape memory metal sheet 22 and the buffer tank 25 are housed in the receiving tank 21. The second liquid outlet 23 is located behind the first liquid outlet 13 and is disposed on the rear wall of the receiving tank 21. Of course, in other embodiments, the second liquid outlet 23 may also be disposed on the left or right wall of the receiving tank 21. Coolant enters the receiving tank 21 from the first liquid outlet 13, then flows from the receiving tank 21 to the second liquid outlet 23, and then flows out of the liquid cooling plate through the second liquid outlet 23.

[0031] The rear wall of the receiving tank 21 has an inclined surface 211, and the second liquid outlet 23 is located on the inclined surface 211. The inclined surface 211 bends forward and extends into an arc surface 212. The arc surface 212 is located on the left side wall of the receiving tank 21 and convexes to the left. The front end of the arc surface 212 is connected to the front wall of the receiving tank 21.

[0032] like Figure 3 and Figure 4 As shown, the shape memory metal sheet 22 includes a fixing part 221, a main body part 222, and an adjusting part 223. The fixing part 221 is fixed to the fixing member 24, which is located on the left side of the first liquid outlet 13. The fixing part 221 is fixed between the fixing member 24 and the front end of the arc surface 212. The main body part 222 connects the fixing part 221 and the adjusting part 223. The width of the adjusting part 223 is greater than the diameter of the second liquid outlet 23. The adjusting part 223 abuts against the inclined surface 211 to adjust the size of the second liquid outlet 23.

[0033] Shape memory metals are special metals that can automatically recover their original shape after plastic deformation at a specific temperature. Their basic characteristic is that they have a shape memory effect, that is, the shape of shape memory metal changes within a certain temperature range. Specifically, it is in a low-temperature phase when the temperature is below a certain temperature and in a high-temperature phase when the temperature is above a certain temperature. In this invention, the shape memory metal sheet 22 can switch between the low-temperature phase and the high-temperature phase according to the temperature of the coolant in the receiving tank 21. The temperature at which the shape memory metal sheet 22 switches between the low-temperature phase and the high-temperature phase can be adjusted as needed.

[0034] When the coolant temperature entering the receiving tank 21 is low, the shape memory metal sheet 22 will be in the low-temperature phase. At this time, the adjusting part 223 abuts against the inclined surface 211. Because the width of the adjusting part 223 is greater than the diameter of the second outlet 23, the adjusting part 223 can block most of the area of ​​the second outlet 23, thereby reducing the flow rate of the second outlet 23. Specifically, the blocking area of ​​the adjusting part 223 is greater than half of the area of ​​the second outlet 23. Figure 5 As shown, considering the situation where the adjusting part 223 completely covers the second liquid outlet 23, the present invention provides multiple through holes 2231 for coolant to flow through on the adjusting part 223, so that the adjusting part 223 cannot completely block the second liquid outlet 23, thereby preventing the coolant in the liquid cooling plate from being completely blocked by the adjusting part 223 after the temperature drops, and thus avoiding the situation where the coolant accumulates rapidly and causes damage to the liquid cooling plate.

[0035] When the temperature of the coolant entering the receiving tank 21 is high, the shape memory metal sheet 22 will be in the high temperature phase. At this time, the adjustment part 223 will move along the inclined surface 211 to reduce the area of ​​the second outlet 23, thereby increasing the flow rate of the second outlet 23. Specifically, the adjustment part 223 can completely not block the second outlet 23 or the blocking area is less than half of the area of ​​the second outlet 23.

[0036] Along the front-to-back direction, the projection of the second outlet 23 is located to the left of the projection of the first outlet 13, and the projection of the second outlet 23 overlaps with the projection of the first outlet 13. With this arrangement, the coolant not only flows from front to back, but also from right to left. At this time, the pressure of the coolant on the regulating part 223 will cause the regulating part 223 to abut against the inclined surface 211. When the shape memory metal sheet 22 is in the low-temperature phase, the regulating part 223 can effectively block the second outlet 23. When the shape memory metal sheet 22 deforms and transforms into the high-temperature phase, the pressure of the coolant can still cause the regulating part 223 to abut against the inclined surface 211, and it will not leave the inclined surface 211 due to the deformation of the shape memory metal. This prevents the coolant from pushing the shape memory metal forward when flowing into the second outlet 23, thus avoiding damage to the structure of the shape memory metal or the fixing part 24. Furthermore, the line connecting the center of the first outlet 13 and the center of the second outlet 23 can be set to be perpendicular to the inclined surface 211, thereby maximizing the use of the coolant pressure and allowing the adjustment part 223 to be attached to the inclined surface 211, thus better shielding and adjusting the size of the second outlet 23.

[0037] When the coolant temperature rises too quickly and the shape memory metal sheet 22 deforms rapidly, the main body 222 will abut against the arc surface 212. The left-convex structure of the arc surface 212 can squeeze the main body 222 when the shape memory metal sheet 22 wants to deform and expand, thereby controlling the overall sliding direction of the shape memory metal sheet 22. This ensures that the adjustment part 223 connected to the main body 222 on the shape memory metal sheet 22 always abuts against the inclined surface 211. Moreover, after the shape memory metal sheet 22 is in the high-temperature phase, the arc surface 212 and the inclined surface 211 can always abut against the shape memory metal sheet 22, so that the shape memory metal sheet 22 can be kept in the designed position under the flushing of the coolant. When the shape memory metal sheet 22 changes to the low-temperature phase again, the position of the adjustment part 223 can be the same as the position in the previous low-temperature phase.

[0038] To further prevent the coolant pressure from affecting the shape of the shape memory metal sheet 22, the fixing member 24 also extends rearward with a blocking part 2211. The blocking part 2211 can prevent the coolant at the first outlet 13 from flowing to the left, thereby reducing the pressure of the coolant when it rushes towards the main body 222. A buffer tank 25 is also provided on the right side of the receiving tank 21, and an arc-shaped buffer surface 26 is located between the second outlet 23 and the buffer tank 25, connecting the inclined surface 211 and the wall of the buffer tank 25. The coolant blocked by the blocking part 2211 will flow into the buffer tank 25, and then flow into the second outlet 23 through the buffer surface 26.

[0039] The above detailed description is only a description of the preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. A liquid cooling plate with automatically adjustable flow rate, characterized in that, include: The cooling zone includes an inlet, a flow channel, and a first outlet. The flow regulation area includes a receiving tank, a shape memory metal sheet housed in the receiving tank, and a second outlet. The tank wall has an inclined surface, and the second outlet is located on the inclined surface. Coolant enters the flow channel from the inlet, passes through the first outlet from the flow channel into the receiving tank, and finally flows out from the second outlet. The shape memory metal sheet has an adjustment section, which can switch between a low-temperature phase and a high-temperature phase according to the temperature of the coolant in the receiving tank. When the shape memory metal sheet is in the low-temperature phase, the adjustment section abuts against the inclined surface, and the second liquid outlet decreases. When the shape memory metal sheet is in the high-temperature phase, the adjustment section moves along the inclined surface, and the second liquid outlet increases.

2. The liquid cooling plate with automatic flow regulation as described in claim 1, characterized in that, The line connecting the center of the first liquid outlet and the center of the second liquid outlet is perpendicular to the inclined surface.

3. The liquid cooling plate with automatic flow regulation as described in claim 1, characterized in that, The flow regulation area is located behind the cooling area. The inclined surface bends forward and extends into an arc surface. The arc surface is located on the left side wall of the receiving groove and convexes to the left. The memory metal sheet has a main body connected to the regulation part. When the coolant temperature exceeds the high-temperature deformation temperature of the memory metal sheet, the main body abuts against the arc surface.

4. The liquid cooling plate with automatic flow regulation as described in claim 1, characterized in that, The first liquid outlet is located in front of the second liquid outlet. Along the front-back direction, the projection of the second liquid outlet is located to the left of the projection of the first liquid outlet, and the projection of the second liquid outlet partially overlaps with the projection of the first liquid outlet.

5. The liquid cooling plate with automatic flow regulation as described in claim 1, characterized in that, The width of the adjustment part is greater than the diameter of the second liquid outlet. When the shape memory metal sheet is in the low temperature phase, the adjustment part blocks the second liquid outlet, thereby reducing the size of the second liquid outlet.

6. The liquid cooling plate with automatic flow regulation as described in claim 5, characterized in that, The regulating part is provided with a through hole for coolant to flow through.

7. The liquid cooling plate with automatic flow regulation as described in claim 1, characterized in that, The flow regulation zone includes a fixing member, the shape memory metal sheet has a fixing part, the fixing part is fixed to the fixing member, the fixing member is located to the left of the first liquid outlet, the fixing part is located between the fixing member and the left side wall of the receiving tank, the fixing member extends rearward to have a blocking part, the blocking part is used to block the coolant at the first liquid outlet from flowing to the left.

8. The liquid cooling plate with automatic flow regulation as described in claim 1, characterized in that, The receiving tank has a buffer tank, which is located on opposite sides of the first liquid outlet, as is the shape memory metal sheet.

9. The liquid cooling plate with automatic flow regulation as described in claim 8, characterized in that, The receiving tank also has a buffer surface, which is located between the second liquid outlet and the buffer tank, connecting the inclined surface and the wall of the buffer tank.

10. The liquid cooling plate with automatic flow regulation as described in claim 1, characterized in that, When the shape memory metal sheet is in the low-temperature phase, the shielding area of ​​the adjustment part is greater than half the area of ​​the second liquid outlet. When the shape memory metal sheet is in the high-temperature phase, the adjustment part does not shield the second liquid outlet or the shielding area of ​​the adjustment part is less than half the area of ​​the second liquid outlet.

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