Cooling plate with alternating hot and cold distribution

Abstract

The utility model provides a cold and hot alternate distribution's radiating plate, radiating plate includes base plate and the cover of upper surface of covering base plate, base plate includes the liquid inlet hole and liquid outlet hole of providing cooling liquid to go out, forms the cooling channel of providing cooling liquid flow on the upper surface of base plate, and the cooling channel includes: first channel and second channel, first channel and second channel parallelly arranged and are spaced from each other, first channel is communicated one of liquid inlet hole and liquid outlet hole, and second channel is communicated the other of liquid inlet hole and liquid outlet hole, intermediate flow channel, intermediate flow channel sets up between first channel and second channel and is communicated first channel and second channel, and intermediate flow channel includes through the plurality of strip flow channel of head -to -tail connection to form the serpentine flow channel, each strip flow channel is parallel to each other and is not parallel to first channel, and adjacent strip flow channel is not all directly head -to -tail connection. The radiating plate of cold and hot alternate distribution of the utility model can the uniformity of heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of radiators, and in particular to a heat sink with alternating hot and cold distribution. Background Technology

[0002] During use, the components to be cooled (chips, power devices / modules, etc.) generate a lot of heat. The heat sink can dissipate heat from the components to be cooled, thereby maintaining the stable operation of the components.

[0003] Existing heat dissipation plates that use liquid cooling typically have the coolant flowing through the object to be cooled in one direction. As the temperature of the coolant gradually increases, the heat dissipation energy gradually decreases, which can easily lead to uneven heat dissipation from the object to be cooled. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide a heat dissipation plate with alternating hot and cold distribution, which can improve the uniformity of heat dissipation to the object to be cooled.

[0005] To address the aforementioned problems, this utility model provides a heat dissipation plate with alternating hot and cold distribution. The heat dissipation plate includes a substrate and a cover plate covering the upper surface of the substrate. The upper surface of the cover plate or the lower surface of the substrate is used to place an object to be cooled. The substrate includes an inlet hole and an outlet hole for supplying coolant. A cooling channel for coolant flow is formed on the upper surface of the substrate. The cooling channel includes:

[0006] A first channel and a second channel are arranged in parallel and spaced apart from each other. The first channel is connected to one of the liquid inlet and the liquid outlet, and the second channel is connected to the other of the liquid inlet and the liquid outlet.

[0007] An intermediate flow channel is disposed between and connects the first channel and the second channel. The intermediate flow channel includes multiple strip-shaped flow channels connected end to end to form a serpentine flow channel. Each of the strip-shaped flow channels is parallel to each other but not parallel to the first channel. Adjacent strip-shaped flow channels are not all directly connected end to end.

[0008] Furthermore, the strip-shaped flow channel is perpendicular to the first channel.

[0009] Furthermore, the two strip-shaped channels located on both sides of the extension direction of the first channel are respectively connected to the first channel and the second channel.

[0010] Furthermore, the strip-shaped flow channel includes a first strip-shaped flow channel, a second strip-shaped flow channel, a third strip-shaped flow channel, a fourth strip-shaped flow channel, and a fifth strip-shaped flow channel that are sequentially distributed along the extension direction of the first channel;

[0011] Among them, the first strip-shaped flow channel, the fourth strip-shaped flow channel, the third strip-shaped flow channel, the second strip-shaped flow channel, and the fifth strip-shaped flow channel are connected end to end in sequence;

[0012] The first strip-shaped flow channel is connected to the first channel, and the fifth strip-shaped flow channel is connected to the second channel.

[0013] Furthermore, the connection between the two connected strip-shaped channels is arc-shaped.

[0014] Furthermore, the intermediate flow channel includes a partition strip located in the middle of the intermediate flow channel and extending along the outer shape of the intermediate flow channel, so that the intermediate flow channel is divided into two parallel sub-channels.

[0015] Furthermore, the edges of the intermediate flow channel are formed in a wavy shape.

[0016] Furthermore, the heat sink also includes:

[0017] A transition channel is provided between the first channel and the intermediate channel, and the first channel is connected to the intermediate channel through the transition channel.

[0018] Furthermore, the intermediate flow channels include multiple channels, and two of the intermediate flow channels are connected to one of the transition flow channels.

[0019] Furthermore, the first channel is connected to the liquid inlet, the second channel is connected to the liquid outlet, and the distribution density of the intermediate flow channel on the upper surface of the substrate is greater than that of the transition flow channel.

[0020] Due to the above technical solution, this utility model has the following beneficial effects:

[0021] The heat dissipation plate of the present invention, with alternating hot and cold distribution, includes a base plate and a cover plate. Coolant flows into the cooling channels from the inlet holes of the base plate and then flows out from the outlet holes. The cooling channels include a first channel and a second channel that are parallel to each other, with an intermediate flow channel disposed between and connecting the first and second channels. The intermediate flow channel comprises multiple strip-shaped flow channels connected end-to-end to form a serpentine flow channel, thereby increasing the contact area with the coolant and improving heat dissipation efficiency.

[0022] Adjacent strip channels are not all directly connected end to end. That is, some strip channels are connected end to end at intervals. They are not continuously distributed in one direction from cold to hot (where heat dissipation efficiency gradually decreases). Instead, there is at least a partial distribution of alternating cold and hot (a distribution of cold first, then hot, then cold again), thereby increasing the uniformity of heat dissipation. Attached Figure Description

[0023] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0024] Figure 1 This is a structural diagram of a heat sink with alternating hot and cold distribution according to an embodiment of the present invention;

[0025] Figure 2 This is a structural diagram of the substrate according to the first embodiment of the present invention;

[0026] Figure 3 yes Figure 2 Top view of the substrate in the embodiment;

[0027] Figure 4 yes Figure 3 Enlarged view of region A in the image;

[0028] Figure 5 This is a structural diagram of the substrate according to the second embodiment of the present invention;

[0029] Figure 6 yes Figure 5 A magnified view of region B in the image.

[0030] Figure label:

[0031] 100, substrate; 110, intermediate flow channel; 120, transition flow channel; 130, first channel; 131, partition bar; 132a, first strip flow channel; 132b, second strip flow channel; 132c, third strip flow channel; 132d, fourth strip flow channel; 132e, fifth strip flow channel; 140, second channel; 200, cover plate. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0034] The following describes a heat dissipation plate with alternating hot and cold distribution according to an embodiment of the present invention.

[0035] like Figures 1 to 6 As shown, the heat dissipation plate with alternating hot and cold distribution in this embodiment of the present invention includes a substrate 100 and a cover plate 200. The substrate 100 includes an inlet hole and an outlet hole for supplying coolant, and a cooling channel for supplying coolant flow is formed on the upper surface of the substrate 100.

[0036] like Figure 1 and Figure 2 As shown, the heat sink includes a substrate 100 and a cover plate 200 covering the upper surface of the substrate 100. An object to be cooled is disposed on the lower surface of the substrate 100 or the upper surface of the cover plate 200. Coolant flows into the cooling channel on the upper surface of the substrate 100 from the inlet hole and flows out from the outlet hole.

[0037] The cooling channel includes a first channel 130, a second channel 140, and an intermediate flow channel 110.

[0038] First, the first channel 130 and the second channel 140 are described. The first channel 130 and the second channel 140 are arranged in parallel and spaced apart from each other. The first channel 130 connects to one of the liquid inlet and liquid outlet, and the second channel 140 connects to the other of the liquid inlet and liquid outlet.

[0039] For example, when the first channel 130 is connected to the inlet hole and the second channel 140 is connected to the outlet hole, the first channel 130 is used to receive coolant from the inlet hole and the second channel 140 discharges coolant to the outlet hole.

[0040] For example, when the first channel 130 is connected to the liquid inlet and the second channel 140 is connected to the liquid inlet, the second channel 140 is used to receive coolant from the liquid inlet, and the first channel 130 discharges coolant to the liquid outlet.

[0041] Next, the intermediate flow channel 110 will be described. The intermediate flow channel 110 is disposed between and connects the first channel 130 and the second channel 140. The intermediate flow channel 110 includes multiple strip-shaped flow channels connected end to end to form a serpentine flow channel. Each strip-shaped flow channel is parallel to each other but not parallel to the first channel 130. Adjacent strip-shaped flow channels are not all directly connected end to end.

[0042] Multiple interconnected strip-shaped flow channels form a serpentine flow path, thereby increasing the contact area with the coolant and improving heat dissipation efficiency. Each strip-shaped flow channel is parallel to each other but not parallel to the first channel 130, that is, it forms a certain angle with the first channel 130.

[0043] like Figure 5 and Figure 6 As shown, adjacent strip channels are not all directly connected end to end. That is, some strip channels are connected end to end at intervals. They are not continuously distributed in one direction from cold to hot (where heat dissipation efficiency gradually decreases). Instead, there is at least a partial distribution of alternating cold and hot (a distribution of cold first, then hot, then cold again), which increases the uniformity of heat dissipation.

[0044] The heat dissipation plate with alternating hot and cold distribution includes a base plate 100 and a cover plate 200. Coolant flows into the cooling channels from the inlet holes of the base plate 100 and then flows out from the outlet holes. The cooling channels include a first channel 130 and a second channel 140 that are parallel to each other. An intermediate flow channel 110 is disposed between and connects the first channel 130 and the second channel 140. The intermediate flow channel 110 includes multiple strip-shaped flow channels connected end-to-end to form a serpentine flow channel, thereby increasing the contact area with the coolant and improving heat dissipation efficiency.

[0045] Adjacent strip channels are not all directly connected end to end. That is, some strip channels are connected end to end at intervals. They are not continuously distributed in one direction from cold to hot (where heat dissipation efficiency gradually decreases). Instead, there is at least a partial distribution of alternating cold and hot (a distribution of cold first, then hot, then cold again), thereby increasing the uniformity of heat dissipation.

[0046] In some embodiments of this utility model, the strip-shaped flow channel is perpendicular to the first channel 130.

[0047] like Figure 3 and Figure 5 As shown, the strip-shaped flow channel is perpendicular to the first channel 130, thus forming a relatively regular flow channel.

[0048] In some embodiments of this utility model, the two strip channels located on both sides of the extension direction of the first channel 130 in the strip channel are respectively connected to the first channel 130 and the second channel 140.

[0049] like Figure 6 The leftmost strip-shaped flow channel connects to the second channel 140, and the rightmost strip-shaped flow channel connects to the first channel 130. It should be noted that the above is only an optional example; the rightmost strip-shaped flow channel can also connect to the second channel 140, and the leftmost strip-shaped flow channel can also connect to the first channel 130.

[0050] Furthermore, the strip-shaped flow channel includes a first strip-shaped flow channel 132a, a second strip-shaped flow channel 132b, a third strip-shaped flow channel 132c, a fourth strip-shaped flow channel 132d, and a fifth strip-shaped flow channel 132e, which are sequentially distributed along the extension direction of the first channel 130. The first strip-shaped flow channel 132a, the fourth strip-shaped flow channel 132d, the third strip-shaped flow channel 132c, the second strip-shaped flow channel 132b, and the fifth strip-shaped flow channel 132e are connected end-to-end in sequence. The first strip-shaped flow channel 132a is connected to the first channel 130, and the fifth strip-shaped flow channel 132e is connected to the second channel 140.

[0051] like Figure 6 As shown, from left to right, there are five strip-shaped flow channels: the first strip-shaped flow channel 132a, the second strip-shaped flow channel 132b, the third strip-shaped flow channel 132c, the fourth strip-shaped flow channel 132d, and the fifth strip-shaped flow channel 132e. The first strip-shaped flow channel 132a, the fourth strip-shaped flow channel 132d, the third strip-shaped flow channel 132c, the second strip-shaped flow channel 132b, and the fifth strip-shaped flow channel 132e are connected end to end in sequence.

[0052] When the inlet is connected to the second channel 140 and the outlet is connected to the first channel 130, the coolant flows sequentially through the first strip-shaped channel 132a, the fourth strip-shaped channel 132d, the third strip-shaped channel 132c, the second strip-shaped channel 132b, and the fifth strip-shaped channel 132e. The coolant temperature distribution is: first lowest temperature (cold), fourth lowest temperature (hot), third lowest temperature, second lowest temperature (cold), and fifth lowest temperature (hot), with alternating hot and cold distribution, increasing the uniformity of heat dissipation to the object being cooled.

[0053] In some embodiments of this utility model, the connection between two end-to-end strip-shaped channels is arc-shaped.

[0054] like Figure 4 and 6 As shown, the connection between the end-to-end strip-shaped flow channels is formed in an arc shape, which can reduce flow resistance. Moreover, it can concentrate heat dissipation on the central area of ​​the object to be cooled, which generates more heat, and reduce heat dissipation in the corners of the object, which generate less heat, thereby improving the utilization rate of heat dissipation.

[0055] In some embodiments of the present invention, the intermediate flow channel 110 includes a partition strip 131, which is located in the middle of the intermediate flow channel 110 and extends along the outer shape of the intermediate flow channel 110, so that the intermediate flow channel 110 is divided into two parallel sub-channels.

[0056] like Figure 3 and Figure 4 As shown, the partition bar 131 divides the intermediate flow channel 110 into two parallel sub-channels. The partition bar 131 increases the contact area with the coolant, improving heat dissipation efficiency. Moreover, even if one sub-channel is blocked, it does not affect the other sub-channel, reducing the risk of blockage.

[0057] In some embodiments of this utility model, the edge of the intermediate flow channel 110 is formed in a wavy shape.

[0058] like Figures 3 to 6 As shown, the edge of the middle flow channel 110 is wavy, which can increase the lateral distribution of coolant and increase the turbulence of coolant, making the flow of coolant closer to turbulence. Compared with laminar flow, it can improve the uniformity and efficiency of heat dissipation.

[0059] In some embodiments of this utility model, the heat sink further includes a transition channel 120. The transition channel 120 is disposed between the first channel 130 and the intermediate channel 110, and the first channel 130 is connected to the intermediate channel 110 through the transition channel 120.

[0060] like Figure 3 and Figure 5 As shown, the transition channel 120 can also be used for objects to be cooled. This allows for simultaneous heat dissipation from more objects.

[0061] Furthermore, the intermediate flow channel 110 includes multiple intermediate flow channels, and two intermediate flow channels 110 are connected to a transition flow channel 120.

[0062] like Figure 3 and Figure 5 As shown, the two intermediate flow channels 110 correspond to one transition flow channel 120.

[0063] Furthermore, the first channel 130 is connected to the liquid inlet, the second channel 140 is connected to the liquid outlet, and the distribution density of the intermediate flow channel 110 on the upper surface of the substrate 100 is greater than that of the transition flow channel 120.

[0064] The coolant first flows into the first channel 130 from the inlet hole, then into the two intermediate channels 110, then into a transition channel 120, then into the second channel 140, and finally out from the outlet hole.

[0065] For example, one intermediate flow channel 110 corresponds to a group of two objects to be cooled, and one transition flow channel 120 corresponds to a group of two objects to be cooled. That is, the coolant flows from the first channel 130 into the two intermediate flow channels 110 corresponding to the four objects to be cooled, and then into the transition flow channel 120 corresponding to the two objects to be cooled. This increases the flow rate in the transition flow channel 120 downstream of the coolant (coolant from the two intermediate flow channels 110 flows into one transition flow channel 120 simultaneously), compensating for the decrease in heat dissipation efficiency due to the increased temperature of the downstream coolant, thus improving the uniformity of heat dissipation to the objects to be cooled. Furthermore, the increased heat dissipation area of ​​the intermediate flow channel 110 upstream of the coolant improves heat dissipation efficiency, thereby enhancing the heat dissipation efficiency of the objects to be cooled.

[0066] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A heat dissipation plate with alternating hot and cold distribution, characterized in that, The heat sink includes a substrate and a cover plate covering the upper surface of the substrate. The upper surface of the cover plate or the lower surface of the substrate is used to mount an object to be cooled. The substrate includes an inlet hole and an outlet hole for supplying coolant. A cooling channel for coolant flow is formed on the upper surface of the substrate. The cooling channel includes: A first channel and a second channel are arranged in parallel and spaced apart from each other. The first channel is connected to one of the liquid inlet and the liquid outlet, and the second channel is connected to the other of the liquid inlet and the liquid outlet. An intermediate flow channel is disposed between and connects the first channel and the second channel. The intermediate flow channel includes multiple strip-shaped flow channels connected end to end to form a serpentine flow channel. Each of the strip-shaped flow channels is parallel to each other but not parallel to the first channel. Adjacent strip-shaped flow channels are not all directly connected end to end.

2. The heat dissipation plate with alternating hot and cold distribution according to claim 1, characterized in that, The strip-shaped flow channel is perpendicular to the first channel.

3. The heat dissipation plate with alternating hot and cold distribution according to claim 1, characterized in that, The two strip-shaped channels located on either side of the extension direction of the first channel are respectively connected to the first channel and the second channel.

4. The heat dissipation plate with alternating hot and cold distribution according to claim 3, characterized in that, The strip-shaped flow channel includes a first strip-shaped flow channel, a second strip-shaped flow channel, a third strip-shaped flow channel, a fourth strip-shaped flow channel, and a fifth strip-shaped flow channel distributed sequentially along the extension direction of the first channel; Among them, the first strip-shaped flow channel, the fourth strip-shaped flow channel, the third strip-shaped flow channel, the second strip-shaped flow channel, and the fifth strip-shaped flow channel are connected end to end in sequence; The first strip-shaped flow channel is connected to the first channel, and the fifth strip-shaped flow channel is connected to the second channel.

5. The heat dissipation plate with alternating hot and cold distribution according to claim 1, characterized in that, The connection between the two connected strip-shaped channels is arc-shaped.

6. The heat dissipation plate with alternating hot and cold distribution according to claim 1, characterized in that, The intermediate flow channel includes a dividing strip located in the middle of the intermediate flow channel and extending along the outer shape of the intermediate flow channel, so that the intermediate flow channel is divided into two parallel sub-channels.

7. The heat dissipation plate with alternating hot and cold distribution according to claim 1, characterized in that, The edges of the intermediate flow channel are wavy.

8. The heat dissipation plate with alternating hot and cold distribution according to claim 1, characterized in that, The heat sink also includes: A transition channel is provided between the first channel and the intermediate channel, and the first channel is connected to the intermediate channel through the transition channel.

9. The heat dissipation plate with alternating hot and cold distribution according to claim 8, characterized in that, The intermediate flow channels include multiple channels, and two of the intermediate flow channels are connected to one of the transition flow channels.

10. The heat dissipation plate with alternating hot and cold distribution according to claim 9, characterized in that, The first channel is connected to the liquid inlet, the second channel is connected to the liquid outlet, and the distribution density of the intermediate flow channel on the upper surface of the substrate is greater than that of the transition flow channel.

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