Manifold microchannel cold plate

Abstract

The present application provides a manifold micro-channel cold plate, comprising an integrally formed flow channel bearing structure and a heat exchange fin layer, the heat exchange fin layer is attached to one side of the flow channel bearing structure. The flow channel bearing structure provides a cold water side structure, a hot water side structure and a low thermal conductivity isolation area, which is formed by the flow channel bearing structure during the integration between the cold water side structure and the hot water side structure, so that the cold water side structure and the hot water side structure are arranged apart from each other in at least part of the adjacent area, and they do not share the same continuous solid pipe wall or bulkhead. The cold water side structure is used to transport cold water medium to the heat exchange fin layer, and the hot water side structure is used to transport hot water medium. Through the above structure, the heat transfer from the hot water side structure to the cold water side structure can be reduced, the preheating of the cold water medium before entering the heat exchange fin layer can be reduced, and the cold plate heat extraction effect and energy utilization efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of liquid cooling technology, and more specifically, to a manifold microchannel cold plate. Background Technology

[0002] Manifold microchannel cold plates are commonly used in liquid cooling systems for high heat flux density devices such as servers, power devices, and energy storage devices. Existing manifold microchannel cold plates typically distribute the cold water medium to the microchannels or heat exchange fin layers through an inlet manifold. After absorbing heat in the heat exchange area, the cold water medium is collected and discharged through a return manifold, thereby achieving liquid cooling heat exchange for the components to be cooled.

[0003] However, in existing manifold microchannel cold plates, the cold water manifold, hot water manifold, or corresponding water compartment are usually located within the same metal flow channel structure and separated by adjacent pipe walls, compartment walls, or partition walls. Because copper and other metals have high thermal conductivity, when the cold water and hot water structures share the same continuous solid pipe wall or compartment wall, heat from the hot water side structure is easily transferred to the cold water side structure. This causes the cold water medium to be preheated before entering the heat exchange fin layer, reducing the effective heat exchange temperature difference.

[0004] Meanwhile, when the cold water return path is close to the hot water side structure and lacks low thermal conductivity insulation, thermal crosstalk is easily generated between the cold and hot water sides, causing non-target heat transfer losses and affecting the overall heat extraction effect and energy utilization efficiency of the cold plate.

[0005] Therefore, it is necessary to propose a manifold microchannel cold plate to improve the problems of common wall heat conduction between hot and cold water sides, preheating of cold water medium, and large thermal crosstalk between hot and cold water sides in the existing technology. Summary of the Invention

[0006] The purpose of this application is to provide a manifold microchannel cold plate, which, by setting a cold water side structure, a hot water side structure, and a low thermal conductivity isolation area between them in an integrally formed flow channel bearing structure, allows the cold water side structure and the hot water side structure to be spaced apart from each other in at least some adjacent areas, and avoids them sharing the same continuous solid pipe wall or compartment wall. This constructs a heat exchange structure with independent cold and hot water transport, low thermal conductivity isolation, and heat exchange fin layer bonding for synergistic heat extraction. This achieves the goal of ensuring that the cold water medium enters the heat exchange fin layer for effective heat extraction, while reducing the preheating effect of the hot water side structure on the cold water side structure and the risk of thermal crosstalk between the cold and hot water sides, thereby improving the heat extraction effect and energy utilization efficiency of the manifold microchannel cold plate.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A manifold microchannel cold plate includes an integrally formed flow channel support structure and a heat exchange fin layer, wherein the heat exchange fin layer is attached to one side of the flow channel support structure. The flow channel support structure provides a cold water side structure, a hot water side structure, and a low thermal conductivity isolation area. The cold water side structure is used to transport cold water medium into the manifold microchannel cold plate, and the hot water side structure is used to transport hot water medium. The low thermal conductivity isolation area is defined between the cold water side structure and the hot water side structure when the flow channel bearing structure is integrally formed. The low thermal conductivity isolation area makes the cold water side structure and the hot water side structure spaced apart from each other in at least some adjacent areas, and makes the cold water side structure and the hot water side structure not share the same continuous solid pipe wall or bulkhead. The low thermal conductivity isolation area is used to reduce heat transfer from the hot water side structure to the cold water side structure.

[0008] In some embodiments, the low thermal conductivity isolation region includes at least one of an isolation cavity, a suspended groove, and an air gap defined when the flow channel support structure is integrally formed.

[0009] In some embodiments, the cold water side structure has a separate cold water side wall, the hot water side structure has a separate hot water side wall, the separate cold water side wall and the separate hot water side wall are integrally formed parts of the flow channel bearing structure, and the separate cold water side wall and the separate hot water side wall are separated by the low thermal conductivity isolation area.

[0010] In some embodiments, the cold water side structure and the hot water side structure are not directly connected within the flow channel support structure.

[0011] In some embodiments, an inlet / outlet plate is also included, which is disposed on the side of the flow channel support structure opposite to the heat exchange fin layer.

[0012] In some embodiments, the inlet and outlet plates are provided with a cold water inlet and a hot water side interface, the cold water inlet being connected to the cold water side structure and the hot water side interface being connected to the hot water side structure.

[0013] In some embodiments, the hot water side interface includes a hot water inlet and / or a hot water outlet.

[0014] In some embodiments, the cold water side structure includes a cold water side cavity for receiving cold water medium entering through the cold water inlet.

[0015] In some embodiments, the cold water side cavity includes a main cold water cavity section and multiple cold water distribution cavities. The main cold water cavity section is connected to the cold water inlet, and the multiple cold water distribution cavities are used to distribute the cold water medium to different regions of the heat exchange fin layer.

[0016] In some embodiments, the hot water side structure includes a hot water side cavity for conveying a hot water medium.

[0017] In some embodiments, the hot water side cavity includes a main hot water cavity section and multiple hot water distribution cavities. The main hot water cavity section is connected to the hot water side interface, and the multiple hot water distribution cavities are used to distribute or collect the hot water medium.

[0018] In some embodiments, the flow channel support structure also provides a cold water return path, and the inlet and outlet plates are further provided with a cold water return port, and the cold water return path is connected to the cold water return port; The cold water return path is used to transport the cold water return medium after heat exchange through the heat exchange fin layer, and the cold water return path is not directly connected to the hot water side structure.

[0019] In some embodiments, the low thermal conductivity isolation region is also disposed between the hot water side structure and the cold water return path to reduce heat transfer between the hot water side structure and the cold water return path.

[0020] In some embodiments, the cold water return path includes a main cold water return path and multiple cold water return branch paths, the multiple cold water return branch paths being respectively connected to the heat exchange fin layer, and the main cold water return path being connected to the cold water return port for collecting and discharging the cold water return medium.

[0021] In some embodiments, the cold water side structure is connected to the heat exchange fin layer through a cold water distribution slot, which is used to allow the cold water medium in the cold water side structure to enter the heat exchange fin layer.

[0022] In some embodiments, the cold water return path is connected to the heat exchange fin layer through a cold water return flow gap, and the cold water return flow gap is used to allow the cold water return medium after heat exchange through the heat exchange fin layer to enter the cold water return path.

[0023] In some embodiments, the cold water return flow gap is located on the adjacent side of the cold water side structure, and the cold water return flow gap is separated from the cold water side structure by a partition and / or the low thermal conductivity isolation area, so that the cold water return flow gap does not constitute a direct communication channel between the cold water side structure and the hot water side structure.

[0024] In some embodiments, the cold water distribution seam is a long strip seam, an arc seam, a rectangular seam, or a combination thereof.

[0025] In some embodiments, the cold water return flow channel is a long strip channel, an arc channel, a rectangular channel, or a combination thereof.

[0026] In some embodiments, the cold water distribution slots are located in the edge region, middle region, and / or turning region of the flow channel support structure, so that the cold water medium forms a partitioned flow path within the heat exchange fin layer.

[0027] In some embodiments, the cold water recirculation slit is provided in the edge region, middle region, and / or turning region of the flow channel support structure, so that the cold water recirculation medium forms a partitioned recirculation path within the heat exchange fin layer.

[0028] In some embodiments, the heat exchange fin layer includes a plurality of fin channels arranged in parallel, the cold water side structure is connected to the inlet side of the plurality of fin channels, and the cold water return path is connected to the outlet side of the plurality of fin channels.

[0029] In some embodiments, after the cold water medium enters the finned channel from the cold water side structure, it flows along the finned channel and absorbs heat to form the cold water return medium, which then enters the cold water return path.

[0030] In some embodiments, the flow channel bearing structure further includes a support connection portion connected to the outer periphery of the cold water side structure and / or the hot water side structure, for supporting the cold water side structure and / or the hot water side structure.

[0031] In some embodiments, the support connection forms a bent heat conduction path between the cold water side structure and / or the hot water side structure, the bent heat conduction path being used to extend the solid heat conduction path between the cold water side structure and the hot water side structure.

[0032] In some embodiments, the flow channel support structure is a metal additive manufacturing part.

[0033] In some embodiments, the low thermal conductivity isolation region is configured to block the common-wall heat exchange path between the cold water side structure and the hot water side structure, and to reduce the preheating effect of the hot water medium in the hot water side structure on the cold water medium in the cold water side structure.

[0034] Compared with the prior art, the present invention has the following beneficial effects: First, this application provides a cold water side structure, a hot water side structure, and a low thermal conductivity isolation area between them in an integrally formed flow channel bearing structure. This allows the cold water side structure and the hot water side structure to be spaced apart from each other in at least some adjacent areas, and avoids them sharing the same continuous solid pipe wall or cabin wall. This weakens the direct solid heat conduction path from the hot water side structure to the cold water side structure and reduces thermal crosstalk between the hot and cold water sides.

[0035] Second, the low thermal conductivity isolation region of this application is defined and formed during the integral molding of the flow channel support structure, and may include at least one of the following: isolation cavity, suspended groove, and air gap. Since this type of isolation region has lower thermal conductivity than a continuous solid metal wall, it can reduce the preheating effect of the hot water medium on the cold water medium while maintaining the overall integration and structural stability of the flow channel support structure, thus keeping the cold water medium at a lower temperature before entering the heat exchange fin layer.

[0036] Third, this application allows the heat exchange fin layer to be fitted onto one side of the flow channel support structure, enabling the cold water medium to enter the heat exchange fin layer from the cold water side structure and effectively extract heat within the heat exchange fin layer. Since the cold water medium is not easily preheated by the hot water side structure before entering the heat exchange fin layer, a large heat exchange temperature difference can be maintained between the cold water medium and the area to be dissipated, thereby improving the heat extraction capacity of the heat exchange fin layer.

[0037] Fourth, this application establishes a cold water return path, allowing the cold water return medium, after heat exchange through the heat exchange fin layer, to be discharged along this path, and ensuring that the cold water return path is not directly connected to the hot water side structure. This avoids direct mixing of the cold water return medium and the hot water medium within the flow channel support structure, while reducing the thermal impact of the hot water side structure on the cold water return path and the cold water side structure, thus improving the independence and stability of the cold and hot medium flow paths.

[0038] Fifth, the cold water side structure, hot water side structure, and low thermal conductivity isolation area of ​​this application are all integrally formed by the flow channel bearing structure. Compared with the subsequent assembly of insulation components or the addition of insulation layers, this can reduce assembly errors, sealing failures, and structural misalignment risks, which is conducive to improving the manufacturing consistency, structural reliability, and long-term use stability of the manifold microchannel cold plate.

[0039] Therefore, this application can reduce heat transfer loss between the cold and hot water sides and improve the effective heat extraction capacity of the cold water medium when it enters the heat exchange fin layer, while ensuring the distribution, heat exchange, and reflux of the cold water medium and the independent transportation of the hot water medium, thereby improving the overall heat dissipation performance and energy utilization efficiency of the manifold microchannel cold plate. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the exploded structure of the manifold microchannel cold plate of this application.

[0041] Figure 2 This is a schematic diagram of the flow channel support structure of the manifold microchannel cold plate of this application.

[0042] Figure 3 This is a cross-sectional structural diagram of the flow channel support structure of the manifold microchannel cold plate of this application.

[0043] Figure 4This is a top-section view of the flow channel support structure of the manifold microchannel cold plate of this application.

[0044] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention.

[0045] Explanation of main component symbols Flow channel bearing structure 10; cold water side structure 101; cold water side cavity 1011; cold water distribution seam 102; Hot water side structure 102; hot water side cavity 1021; low thermal conductivity isolation area 103; cold water return flow channel 104; Heat exchange fin layer 20; fin channel 201; Inlet / outlet plates 30; cold water inlet 301; cold water return outlet 302. Detailed Implementation

[0046] Example 1: Existing manifold microchannel cold plates typically include an inlet manifold, a return manifold, and a microchannel heat exchange area connected to the manifold. The cold water medium is distributed to the heat exchange area via the inlet manifold, absorbs heat from the components to be cooled in the heat exchange area, and then is collected and discharged via the return manifold or a return path. To improve the integration of the flow channels, the cold water side channels, hot water side channels, cold water return channels, or corresponding water tanks in existing cold plates are usually arranged within the same flow channel structure and separated by pipe walls, tank walls, or partition walls, thereby achieving a zoned arrangement of different medium flow channels within the same cold plate.

[0047] However, in practical applications, traditional manifold microchannel cold plates typically separate the cold water side and hot water side structures only through continuous solid pipe walls or bulkheads. Since the flow channel support structures are often made of high thermal conductivity materials such as copper, the hot water medium in the hot water side structure easily transfers heat to the cold water side structure through the solid wall. This preheats the cold water medium before it enters the heat exchange fin layer, reducing the effective heat exchange temperature difference when the cold water medium enters the heat exchange area, thus affecting the heat extraction efficiency of the cold plate. Simultaneously, if the cold water return path is close to the hot water side structure and lacks effective isolation, additional thermal crosstalk can easily occur, increasing non-target heat transfer losses and reducing energy utilization efficiency.

[0048] To address the aforementioned issues, the applicant recognized the need to construct a manifold microchannel cold plate structure that, while ensuring the integration of the flow channel and the heat exchange fins for heat extraction, can reduce heat transfer between the hot and cold water sides. Specifically, a cold water side structure, a hot water side structure, and a low thermal conductivity isolation region between them can be incorporated into a single-piece flow channel support structure. This ensures that the cold water side structure and the hot water side structure are spaced apart in at least partially adjacent areas, avoiding the sharing of the same continuous solid pipe wall or bulkhead. Simultaneously, the cold water medium enters the heat exchange fins through the cold water side structure to complete heat extraction and is discharged through the cold water return path. This ensures smooth cold water distribution, heat exchange, and return processes while reducing the thermal impact of the hot water side structure on the cold water side structure and the cold water return path, thereby improving the heat extraction effect and energy utilization efficiency of the manifold microchannel cold plate.

[0049] like Figure 1-4 As shown, this embodiment provides a manifold microchannel cold plate, which can be used in electronic devices, power modules, server liquid cooling systems, energy storage device thermal management systems, or other devices requiring liquid cooling. The manifold microchannel cold plate includes an integrally formed flow channel support structure 10 and a heat exchange fin layer 20, with the heat exchange fin layer 20 attached to one side of the flow channel support structure 10. The flow channel support structure 10 forms flow paths for cold water, hot water, and cold water return media. The heat exchange fin layer 20 facilitates heat exchange with the components to be cooled, allowing the cold water to absorb heat transferred from the components as it flows through the heat exchange fin layer 20.

[0050] The flow channel support structure 10 includes a cold water side structure 101, a hot water side structure 102, and a low thermal conductivity insulation region 103. The cold water side structure 101 is used to transport the cold water medium into the manifold microchannel cold plate, and the hot water side structure 102 is used to transport the hot water medium. The low thermal conductivity insulation region 103 is located between the cold water side structure 101 and the hot water side structure 102, and is defined and formed between the cold water side structure 101 and the hot water side structure 102 when the flow channel support structure 10 is integrally formed. That is to say, the low thermal conductivity insulation region 103 is not a heat insulation component that is assembled separately later, but an internal isolation space or isolation structure formed simultaneously when the flow channel support structure 10 is formed.

[0051] In this embodiment, the low thermal conductivity isolation region 103 ensures that the cold water side structure 101 and the hot water side structure 102 are spaced apart from each other in at least partially adjacent areas, and that the cold water side structure 101 and the hot water side structure 102 do not share the same continuous solid pipe wall or bulkhead. Therefore, when the hot water medium flows in the hot water side structure 102, the heat within the hot water side structure 102 is not easily transferred directly to the cold water side structure 101 through the continuous solid metal wall, thereby reducing heat transfer from the hot water side structure 102 to the cold water side structure 101 and preventing the cold water medium from being preheated before entering the heat exchange fin layer 20.

[0052] In some embodiments, the low thermal conductivity isolation region 103 includes at least one of an isolation cavity, a suspended groove, and an air gap. The isolation cavity, suspended groove, or air gap is defined and formed during the integral molding of the flow channel support structure 10 and is located between the cold water side structure 101 and the hot water side structure 102. Since there is no continuous solid metal material within the isolation cavity, suspended groove, or air gap, or only a small area of ​​supporting connection structure exists, the solid contact area between the cold water side structure 101 and the hot water side structure 102 can be reduced, extending the solid thermal conduction path between them, thereby reducing thermal crosstalk between the cold and hot water sides.

[0053] In some embodiments, the cold water side structure 101 has an independent cold water side wall, and the hot water side structure 102 has an independent hot water side wall. Both the cold water side wall and the hot water side wall are integrally formed parts of the flow channel support structure 10, and are separated by a low thermal conductivity insulation region 103. Through this arrangement, although the cold water side structure 101 and the hot water side structure 102 belong to the same flow channel support structure 10, they are not directly separated in adjacent areas by the same continuous solid wall, but rather thermally isolated by the low thermal conductivity insulation region 103.

[0054] In some embodiments, the cold water side structure 101 and the hot water side structure 102 are not directly connected within the flow channel support structure 10. The cold water medium flows within the cold water side structure 101, and the hot water medium flows within the hot water side structure 102; the two do not directly mix within the flow channel support structure 10. This ensures that the cold water medium and the hot water medium flow along their respective preset paths, while preventing direct mixing of the cold and hot media from causing an increase in cold water temperature or a decrease in system heat exchange efficiency.

[0055] In some embodiments, the manifold microchannel cold plate further includes inlet / outlet plates 30. The inlet / outlet plates 30 are disposed on the side of the flow channel support structure 10 opposite to the heat exchange fin layer 20. The inlet / outlet plates 30 can be sealed to the flow channel support structure 10 and are used to provide external interfaces to the cold water side structure 101, the hot water side structure 102, and the cold water return path. Specifically, the inlet / outlet plates 30 are provided with a cold water inlet 301 and a hot water side interface. The cold water inlet 301 communicates with the cold water side structure 101, and the hot water side interface communicates with the hot water side structure 102. The hot water side interface may include a hot water inlet and / or a hot water outlet to realize the input, output, or circulation of hot water medium according to the actual system circulation mode.

[0056] In some embodiments, the cold water side structure 101 includes a cold water side cavity 1011. The cold water side cavity 1011 is used to receive the cold water medium entering through the cold water inlet 301. Further, the cold water side cavity 1011 may include a main cold water cavity section and multiple cold water distribution cavity sections. The main cold water cavity section is connected to the cold water inlet 301, and the multiple cold water distribution cavity sections are respectively connected to the main cold water cavity section and are used to distribute the cold water medium to different regions of the heat exchange fin layer 20. By providing multiple cold water distribution cavity sections, the cold water medium can be dispersed into multiple flow regions before entering the heat exchange fin layer 20, thereby improving the uniformity of cold water medium distribution within the heat exchange fin layer 20.

[0057] In some embodiments, the hot water side structure 102 includes a hot water side cavity 1021. The hot water side cavity 1021 is used to transport hot water medium. Further, the hot water side cavity 1021 may include a main hot water cavity section and multiple hot water distribution cavity sections. The main hot water cavity section is connected to the hot water side interface, and the multiple hot water distribution cavity sections are used to distribute or collect the hot water medium. The hot water side cavity 1021 and the cold water side cavity 1011 are separated by a low thermal conductivity insulation region 103, so that when the hot water medium flows in the hot water side cavity 1021, it is not easy for heat to be directly transferred to the cold water side cavity 1011 through the shared wall structure.

[0058] In some embodiments, the flow channel support structure 10 also provides a cold water return path, and the inlet / outlet water plate 30 is further provided with a cold water return port 302, which is connected to the cold water return path. The cold water return path is used to transport the cold water return medium after heat exchange in the heat exchange fin layer 20, and the cold water return path is not directly connected to the hot water side structure 102. Specifically, after the cold water medium enters the heat exchange fin layer 20 and absorbs heat, it forms a cold water return medium, which is collected through the cold water return path and discharged from the cold water return port 302.

[0059] In some embodiments, a low thermal conductivity isolation region 103 may also be provided between the hot water side structure 102 and the cold water return path. This arrangement can reduce heat transfer between the hot water side structure 102 and the cold water return path, reduce the thermal impact of the hot water medium on the cold water return path, and also prevent direct communication or mixing between the cold water return path and the hot water side structure 102.

[0060] In some embodiments, the cold water return path includes a main cold water return path and multiple cold water return branch paths. The multiple cold water return branch paths are respectively connected to the heat exchange fin layer 20, used to receive cold water return media flowing from different regions of the heat exchange fin layer 20. The main cold water return path is connected to the cold water return port 302, used to collect the cold water return media from the multiple cold water return branch paths and discharge it from the manifold microchannel cold plate. By setting multiple cold water return branch paths, the local return resistance differences in the heat exchange fin layer 20 can be reduced, and the collection stability of the cold water return media can be improved.

[0061] In some embodiments, the cold water side structure 101 communicates with the heat exchange fin layer 20 via a cold water distribution slot 102. The cold water distribution slot 102 is located on the side of the flow channel support structure 10 near the heat exchange fin layer 20, allowing the cold water medium within the cold water side structure 101 to enter the heat exchange fin layer 20. The cold water distribution slot 102 can be a long strip, an arc-shaped slot, a rectangular slot, or a combination thereof. The cold water distribution slot 102 can be located in the edge region, middle region, and / or turning region of the flow channel support structure 10, so that the cold water medium forms a zoned flow path within the heat exchange fin layer 20.

[0062] In some embodiments, the cold water return path is connected to the heat exchange fin layer 20 via a cold water return flow slot 104. The cold water return flow slot 104 is located on the side of the flow channel support structure 10 near the heat exchange fin layer 20, allowing the cold water return medium, after heat exchange in the heat exchange fin layer 20, to enter the cold water return path. The cold water return flow slot 104 can be a long strip, an arc-shaped slot, a rectangular slot, or a combination thereof. The cold water return flow slot 104 can be located in the edge region, middle region, and / or turning region of the flow channel support structure 10, so that the cold water return medium forms a partitioned return path within the heat exchange fin layer 20.

[0063] In some embodiments, the cold water return flow channel 104 is disposed on the adjacent side of the cold water side structure 101, and the cold water return flow channel 104 is separated from the cold water side structure 101 by a partition and / or a low thermal conductivity isolation area 103. That is, although the cold water return flow channel 104 can be arranged adjacent to the cold water side structure 101, it does not constitute a direct communication channel between the cold water side structure 101 and the hot water side structure 102, nor is it used to allow the cold water medium that has not undergone heat exchange in the cold water side structure 101 to directly enter the hot water side structure 102. The cold water medium needs to first enter the heat exchange fin layer 20 from the cold water side structure 101, complete heat extraction in the heat exchange fin layer 20, and then enter the cold water return path through the cold water return flow channel 104.

[0064] In some embodiments, the heat exchange fin layer 20 includes a plurality of fin channels 201 arranged in parallel. The cold water side structure 101 is connected to the inlet side of the plurality of fin channels 201, and the cold water return path is connected to the outlet side of the plurality of fin channels 201. After the cold water medium enters the fin channel 201 from the cold water side structure 101, it flows along the fin channel 201 and absorbs the heat transferred by the component to be cooled, forming a cold water return medium, which then enters the cold water return path. Since the heat exchange fin layer 20 is attached to one side of the flow channel support structure 10, the cold water medium can maintain good thermal contact with the area to be cooled within the heat exchange fin layer 20, thereby achieving effective heat extraction. In some embodiments, the flow channel support structure 10 further includes a support connection. The support connection is connected to the outer periphery of the cold water side structure 101 and / or the hot water side structure 102, and is used to support the cold water side structure 101 and / or the hot water side structure 102. The support connection can be integrally formed with the cold water side structure 101 and / or the hot water side structure 102 using a metal additive manufacturing method. A bent heat conduction path can be formed between the support connection and the cold water side structure 101 and / or the hot water side structure 102. This bent heat conduction path is used to extend the solid heat conduction path between the cold water side structure 101 and the hot water side structure 102, thereby further reducing heat transfer from the hot water side structure 102 to the cold water side structure 101.

[0065] In some embodiments, the flow channel support structure 10 is a metal additive manufacturing part. Further, the flow channel support structure 10 can be a copper additive manufacturing part. Through metal additive manufacturing, isolation cavities, suspended grooves, air gaps, cold water side cavities 1011, hot water side cavities 1021, and cold water return paths that are difficult to obtain through conventional machining can be formed inside the flow channel support structure 10. This ensures the integral molding relationship between the cold water side structure 101, the hot water side structure 102, and the low thermal conductivity isolation area 103, improving structural integration and manufacturing consistency.

[0066] In this embodiment, during operation of the manifold microchannel cold plate, the cold water medium first enters the cold water side structure 101 through the cold water inlet 301 on the inlet / outlet plate 30, and then enters the heat exchange fin layer 20 through the cold water distribution slot 102. The cold water medium flows along the fin channel 201 within the heat exchange fin layer 20 and absorbs heat, forming a cold water return medium. The cold water return medium then enters the cold water return path through the cold water return flow slot 104 and is finally discharged from the cold water return port 302. Simultaneously, the hot water medium enters or flows through the hot water side structure 102 through the hot water side interface. Because a low thermal conductivity isolation area 103 is provided between the cold water side structure 101 and the hot water side structure 102, and the two do not share the same continuous solid pipe wall or bulkhead, the shared wall heat exchange path between the cold and hot water sides can be blocked or weakened, reducing the preheating effect of the hot water side structure 102 on the cold water medium within the cold water side structure 101.

[0067] Through the above structure, this embodiment can maintain a low temperature of the cold water medium before entering the heat exchange fin layer 20, while ensuring heat exchange between the heat exchange fin layer 20 and the flow channel bearing structure 10. It also avoids unnecessary mixing and thermal crosstalk between the cold water side structure 101, the hot water side structure 102, and the cold water return path, thereby improving the heat extraction capacity, heat dissipation stability, and energy utilization efficiency of the manifold microchannel cold plate. The above embodiments only illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

[0068] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A manifold microchannel cold plate, characterized in that, It includes an integrally formed flow channel support structure and a heat exchange fin layer, wherein the heat exchange fin layer is attached to one side of the flow channel support structure; The flow channel support structure provides a cold water side structure, a hot water side structure, and a low thermal conductivity isolation area. The cold water side structure is used to transport cold water medium into the manifold microchannel cold plate, and the hot water side structure is used to transport hot water medium. The low thermal conductivity isolation area is defined between the cold water side structure and the hot water side structure when the flow channel bearing structure is integrally formed. The low thermal conductivity isolation area makes the cold water side structure and the hot water side structure spaced apart from each other in at least some adjacent areas, and makes the cold water side structure and the hot water side structure not share the same continuous solid pipe wall or bulkhead. The low thermal conductivity isolation area is used to reduce heat transfer from the hot water side structure to the cold water side structure.

2. The manifold microchannel cold plate according to claim 1, characterized in that, The low thermal conductivity isolation area includes at least one of the following: isolation cavity, suspended groove, and air gap, which are defined when the flow channel bearing structure is integrally formed.

3. The manifold microchannel cold plate according to claim 1, characterized in that, The cold water side structure has an independent wall on the cold water side, and the hot water side structure has an independent wall on the hot water side. Both the independent wall on the cold water side and the independent wall on the hot water side are integrally formed parts of the flow channel bearing structure, and the independent wall on the cold water side and the independent wall on the hot water side are separated by the low thermal conductivity isolation area.

4. The manifold microchannel cold plate according to claim 1, characterized in that, The cold water side structure and the hot water side structure are not directly connected within the flow channel bearing structure.

5. The manifold microchannel cold plate according to claim 1, characterized in that, It also includes inlet and outlet water plates, which are disposed on the side of the flow channel bearing structure away from the heat exchange fin layer.

6. The manifold microchannel cold plate according to claim 5, characterized in that, The inlet and outlet water plate is provided with a cold water inlet and a hot water side interface. The cold water inlet is connected to the cold water side structure, and the hot water side interface is connected to the hot water side structure.

7. The manifold microchannel cold plate according to claim 5, characterized in that, The flow channel support structure also provides a cold water return path, and the inlet and outlet plates are also provided with cold water return ports. The cold water return path is connected to the cold water return ports. The cold water return path is used to transport the cold water return medium after heat exchange through the heat exchange fin layer, and the cold water return path is not directly connected to the hot water side structure.

8. The manifold microchannel cold plate according to claim 1, characterized in that, The cold water side structure is connected to the heat exchange fin layer through a cold water distribution slot, which is used to allow the cold water medium in the cold water side structure to enter the heat exchange fin layer.

9. The manifold microchannel cold plate according to claim 7, characterized in that, The cold water return path is connected to the heat exchange fin layer through a cold water return flow gap. The cold water return flow gap is used to allow the cold water return medium, which has undergone heat exchange in the heat exchange fin layer, to enter the cold water return path.

10. The manifold microchannel cold plate according to claim 1, characterized in that, The flow channel support structure is a metal additive manufacturing part.

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