Flow field regulation type heat sink

Abstract

The utility model discloses a kind of flow field regulation and control type radiators, which sequentially sets first multi-slit area and second multi-slit area between first single-flow area and second single-flow area, and adopts staggered rib plate to form the structure of dense gap, fundamentally changes the flow and heat exchange mode of cooling liquid in flow passage, and completely overcomes the disadvantages of limited heat exchange area of traditional cavity flow passage. Specifically, the structure disperses the original concentrated liquid flow into the narrow gap formed by numerous staggered rib plates, so that most of the cooling liquid must be in close contact with the rib plate surface with high thermal conductivity, thereby greatly increasing the effective heat exchange area, achieving sufficient and efficient heat exchange between the cooling liquid and the metal material of the radiator, and significantly improving the heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of radiator technology, and in particular to a flow field regulating radiator. Background Technology

[0002] In fields such as electronic devices and power batteries, with the continuous increase in power density, efficient heat dissipation has become crucial for ensuring equipment reliability and lifespan. Liquid cooling technology, due to its high thermal conductivity and other advantages, is widely used in these fields. Existing liquid cooling radiators typically consist of a main body with coolant channels, relying on the flow of coolant within these channels to remove heat.

[0003] However, traditional coolant flow channel designs often employ simple cavity structures, resulting in a wide and direct flow path for the coolant within these cavities. This means that most of the coolant only exchanges heat with the channel walls to a limited extent, while the coolant in the central region of the channel fails to fully participate in heat exchange, leading to insufficient overall heat transfer efficiency. Furthermore, this flow channel structure has weak control over coolant flow patterns, easily generating eddies or dead zones, further reducing heat dissipation efficiency. In addition, some radiators incorporate turbulence structures in the flow channels to enhance heat transfer, but these structures are often single-function and fail to differentiate their design for the thermal management needs of different sections of the flow channel (such as the low-temperature inlet section and the high-temperature outlet section), making it difficult to maximize heat dissipation performance.

[0004] Therefore, there is a need in the prior art for a radiator structure that can significantly increase the heat exchange area between the coolant and the radiator, and can finely control the flow of coolant and the heat exchange process. Utility Model Content

[0005] The main purpose of this invention is to propose a flow field control type radiator, which aims to increase the heat exchange area between the coolant and the radiator, and to finely control the flow of coolant and the heat exchange process.

[0006] To achieve the above objectives, this utility model proposes a flow field regulating radiator, including a main body, wherein a coolant flow channel with an inlet and an outlet is provided inside the main body;

[0007] The coolant flow channel forms a first single-flow zone, a first multi-slot zone, a middle single-flow zone, a second multi-slot zone, and a second single-flow zone at its inlet, middle section, and outlet, respectively.

[0008] The first multi-slit area is formed by a first adjustment structure, which includes multiple staggered first ribs and second ribs, and multiple slits are formed between the first ribs and the second ribs to allow coolant to pass through.

[0009] The second multi-slit zone is formed by a second adjustment structure, which includes multiple staggered third and fourth ribs, with multiple slits between the third and fourth ribs for coolant to pass through.

[0010] The first regulating structure is used to absorb heat from the heat source and conduct it to the first rib and / or the second rib, so that the coolant flowing through the first multi-slit area can fully exchange heat with the rib as it disperses through each slit.

[0011] The second regulating structure is used to regulate the flow of coolant through the second multi-slit zone.

[0012] Preferably, the second regulating structure can also be used to absorb heat from the heat source and conduct it to the third rib and / or the fourth rib.

[0013] Preferably, the cross-sectional area of ​​the first multi-slit zone and the second multi-slit zone perpendicular to the coolant flow direction is greater than the cross-sectional area of ​​the first single-flow zone, the middle single-flow zone, and the second single-flow zone.

[0014] Preferably, the top wall of the main body has a through opening corresponding to the positions of the first multi-slit area, the middle single-flow area, and the second multi-slit area;

[0015] The radiator further includes a first cover plate, a second cover plate, and a third cover plate. The first cover plate is closed and welded to the opening corresponding to the first multi-slit area. The third cover plate is closed and welded to the opening corresponding to the middle single-flow area. The second cover plate is closed and welded to the opening corresponding to the second multi-slit area.

[0016] The first and second single-flow zones are non-penetrating flow channels formed directly on the main body.

[0017] Preferably, multiple first ribs are connected to the first cover plate and installed together with it;

[0018] Multiple third ribs are connected to and installed together with the second cover plate.

[0019] Preferably, the multiple second ribs are integral with the main body or are fixed by welding;

[0020] The multiple fourth ribs are integral with the main body or are fixed by welding.

[0021] Preferably, the flow channel shape of the single flow zone is arc-shaped or U-shaped.

[0022] Preferably, the main body, the first adjustment structure, and the second adjustment structure are made of thermally conductive metal material.

[0023] Preferably, a confluence zone is provided between the first single-flow zone and the first multi-slit zone, between the middle single-flow zone and the first multi-slit zone, between the middle single-flow zone and the second multi-slit zone, and between the second single-flow zone and the second multi-slit zone;

[0024] The cross-sectional area of ​​the confluence zone is not less than the cross-sectional area of ​​the multi-slot zone, and is used to distribute the coolant from the single flow zone to all the slots of the entire multi-slot zone.

[0025] Compared with existing technologies, the flow field regulation type radiator provided by this utility model has the following significant advantages: This utility model fundamentally changes the flow and heat exchange mode of the coolant in the flow channel by sequentially setting a first multi-slit zone and a second multi-slit zone between the first single flow zone and the second single flow zone, and adopting a structure with staggered ribs forming dense slits. This completely overcomes the drawback of the limited heat exchange area of ​​traditional cavity-type flow channels. Specifically, this structure disperses the originally concentrated liquid flow into the narrow slits formed by numerous staggered ribs, so that most of the coolant must be in close contact with the highly thermally conductive rib surface, thereby greatly increasing the effective heat exchange area and realizing full and efficient heat exchange between the coolant and the radiator metal material, significantly improving heat dissipation efficiency. Furthermore, by focusing the function of the first regulating structure on absorbing heat from the heat source and performing forced heat exchange, while the core function of the second regulating structure is to perform final flow conditioning on the coolant before it flows out, this differentiated functional design for different sections of the flow channel achieves refined control of the heat dissipation process. This not only ensures efficient heating of the coolant at the inlet but also optimizes the stability of the flow field at the outlet, avoiding ineffective eddies and dead zones, thereby maximizing heat dissipation efficiency at the system level. In addition, by adopting a manufacturing method that uses a top cover plate welded to seal the complex flow area, the technological challenge of directly processing complex internal flow channels is cleverly solved, making this high-performance heat dissipation structure feasible for industrialization. In summary, this invention simultaneously solves multiple technical problems such as increasing the heat exchange area, optimizing the flow field distribution, realizing zoned control, and simplifying the manufacturing of complex structures, providing a high-performance radiator with high heat dissipation efficiency, stable flow field, and ease of production. Attached Figure Description

[0026] Figure 1 This is a view of the appearance of the present utility model;

[0027] Figure 2 This is an exploded view of the present invention;

[0028] Figure 3 This is a cross-sectional view of the present invention. Detailed Implementation

[0029] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0030] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0032] This invention proposes a flow field regulating heat sink, which is mainly used for heat dissipation of high heat flux density components such as electronic device chips and power battery modules.

[0033] In this embodiment of the utility model, such as Figures 1 to 3 As shown, the flow field regulating radiator includes a main body 1, which is typically a block structure made of a highly thermally conductive metallic material (such as aluminum alloy or copper alloy). Inside the main body 1, there is a continuous coolant flow channel extending from the inlet to the outlet.

[0034] Specifically, the coolant flow channel is divided into five functional sections along the coolant flow direction according to its function and structural characteristics: the first single-flow zone 2 located at the inlet, the first multi-slit zone 3 immediately following it, the middle single-flow zone 4 located in the middle section of the flow channel, the second multi-slit zone 5 immediately following it, and the second single-flow zone 6 located at the outlet.

[0035] Specifically, the first multi-slit zone 3 is formed by a first adjustment structure. This first adjustment structure includes multiple parallel and spaced-apart first ribs 71 and multiple parallel and spaced-apart second ribs 72. The first ribs 71 and second ribs 72 are spatially interlocked, like the teeth of two combs crossing each other, thus forming numerous narrow gaps between them for coolant to pass through. These gaps greatly increase the contact area between the coolant and the metal ribs.

[0036] Specifically, the second multi-slit zone 5 is formed by a second adjustment structure. This second adjustment structure is structurally similar to the first adjustment structure, including multiple staggered third ribs 81 and fourth ribs 82, with multiple gaps formed therebetween.

[0037] Specifically, in this embodiment, the first regulating structure is configured to closely contact the heat source, and its first rib 71 and / or second rib 72 can effectively absorb the heat generated by the heat source. When the coolant enters the first multi-slit zone 3 from the first single-flow zone 2, the liquid flow is dispersed into each slit, and in this process, it fully contacts the hot rib surface, completing efficient heat exchange. Therefore, the core function of the first regulating structure is heat conduction and heat exchange, while its structure also plays a role in equalizing and regulating the liquid flow.

[0038] Specifically, the main function of the second regulating structure is flow regulation. The coolant flowing through the single-flow zone 4 already carries a large amount of heat. After entering the second multi-slot zone 5, its complex slot structure can further smooth the liquid flow, eliminate eddies, and ensure that the coolant flows smoothly out of the radiator. It can also play a certain role in auxiliary temperature equalization. Of course, the second regulating structure can also be used to absorb heat from the heat source and conduct it to the third rib 81 and / or the fourth rib 82.

[0039] Preferably, the total cross-sectional area of ​​the first multi-slot zone 3 and the second multi-slot zone 5 perpendicular to the flow direction is greater than the cross-sectional area of ​​the first single-flow zone 2, the middle single-flow zone 4, and the second single-flow zone 6. This design slows down the flow rate of the coolant when it enters the multi-slot zone, thus extending the heat exchange time.

[0040] Specifically, this embodiment further optimizes the manufacturing process and assembly method of the radiator based on the above embodiments.

[0041] Due to the complex internal structures of the first multi-slit zone 3, the middle single-flow zone 4, and the second multi-slit zone 5, they are difficult to directly process and form within the enclosed main body 1. Therefore, through openings are machined into the top wall of the main body 1 at positions corresponding to these three zones.

[0042] Specifically, the opening corresponding to the first multi-slit zone 3 is closed by the first cover plate 91; the opening corresponding to the single-flow zone 4 is closed by the third cover plate 93; and the opening corresponding to the second multi-slit zone 5 is closed by the second cover plate 92. The first cover plate 91 also serves as a heat-conducting component that is in direct contact with the heat source.

[0043] All cover plates are fixed to the main body 1 by welding (e.g., vacuum brazing) to ensure the sealing of the flow channel. The first single flow zone 2 and the second single flow zone 6 have simple structures and are directly machined into the main body 1, forming non-penetrating flow channels.

[0044] Specifically, as a preferred assembly method, multiple first ribs 71 can be prefabricated and fixedly connected (e.g., by welding or integral molding) on ​​the inner side of the first cover plate 91 to form a sub-module. Similarly, multiple third ribs 81 are also pre-fixed to the second cover plate 92. During assembly, the cover plate with ribs can be simply fastened to the corresponding opening of the main body 1 and welded, thus completing the installation and positioning of the complex flow channel structure in one go, greatly simplifying the production process.

[0045] Specifically, for the other set of ribs, multiple second ribs 72 can be integrally formed with the main body 1, that is, multiple second ribs 72 can be directly machined onto the main body 1; or, they can be machined as independent parts and then fixed to the main body 1 by welding. The fourth rib 82 is treated in the same way.

[0046] Specifically, this embodiment incorporates the features of the above embodiments and provides more details.

[0047] The flow channel shape of the single flow zone 4 can be designed as an arc, a U, or an S to increase the flow path of the coolant, promote the mixing of different temperature layers in the fluid, and achieve better temperature uniformity.

[0048] In addition, to ensure that the coolant from the single flow zone with a smaller cross-sectional area can evenly fill the entire multi-slot zone with a larger cross-sectional area, and to avoid forming flow dead zones due to no coolant passing through some slots, a confluence zone 11 is set at the connection between each single flow zone and the multi-slot zone.

[0049] Specifically, a confluence zone 11 is provided between the first single-flow zone 2 and the first multi-slot zone 3, between the middle single-flow zone 4 and the first multi-slot zone 3, between the middle single-flow zone 4 and the second multi-slot zone 5, and between the second single-flow zone 6 and the second multi-slot zone 5. The cross-sectional area of ​​the confluence zone 11 is designed to be no less than the cross-sectional area of ​​its upstream single-flow zone. Its function is like a distribution cavity, which can smoothly guide and distribute the concentrated liquid flow to all the slots of the downstream multi-slot zone, thereby ensuring that all heat exchange areas are effectively utilized.

[0050] Compared with existing technologies, the flow field regulation type radiator provided by this utility model has the following significant advantages: This utility model fundamentally changes the flow and heat exchange mode of the coolant in the flow channel by sequentially setting a first multi-slit zone and a second multi-slit zone between the first single flow zone and the second single flow zone, and adopting a structure with staggered ribs forming dense slits. This completely overcomes the drawback of the limited heat exchange area of ​​traditional cavity-type flow channels. Specifically, this structure disperses the originally concentrated liquid flow into the narrow slits formed by numerous staggered ribs, so that most of the coolant must be in close contact with the highly thermally conductive rib surface, thereby greatly increasing the effective heat exchange area and realizing full and efficient heat exchange between the coolant and the radiator metal material, significantly improving heat dissipation efficiency. Furthermore, by focusing the function of the first regulating structure on absorbing heat from the heat source and performing forced heat exchange, while the core function of the second regulating structure is to perform final flow conditioning on the coolant before it flows out, this differentiated functional design for different sections of the flow channel achieves refined control of the heat dissipation process. This not only ensures efficient heating of the coolant at the inlet but also optimizes the stability of the flow field at the outlet, avoiding ineffective eddies and dead zones, thereby maximizing heat dissipation efficiency at the system level. In addition, by adopting a manufacturing method that uses a top cover plate welded to seal the complex flow area, the technological challenge of directly processing complex internal flow channels is cleverly solved, making this high-performance heat dissipation structure feasible for industrialization. In summary, this invention simultaneously solves multiple technical problems such as increasing the heat exchange area, optimizing the flow field distribution, realizing zoned control, and simplifying the manufacturing of complex structures, providing a high-performance radiator with high heat dissipation efficiency, stable flow field, and ease of production.

[0051] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A flow field regulating type radiator, characterized in that: Includes a main body (1), wherein the main body (1) is provided with a coolant flow channel having an inlet and an outlet; The coolant flow channel forms a first single flow zone (2), a first multi-slit zone (3), a middle single flow zone (4), a second multi-slit zone (5), and a second single flow zone (6) at its inlet, middle section, and outlet, respectively. The first multi-slit area (3) is formed by a first adjustment structure, which includes multiple staggered first ribs (71) and second ribs (72), and multiple slits for coolant to pass through are formed between the first ribs (71) and the second ribs (72). The second multi-slit area (5) is formed by a second adjustment structure, which includes multiple staggered third ribs (81) and fourth ribs (82), and multiple slits for coolant to pass through are formed between the third ribs (81) and the fourth ribs (82); The first adjustment structure is used to absorb heat from the heat source and conduct it to the first rib (71) and / or the second rib (72) so that the coolant flowing through the first multi-slit area (3) can fully exchange heat with the rib as it disperses through each slit. The second regulating structure is used to regulate the flow of coolant through the second multi-slit zone (5).

2. The flow field regulating radiator as described in claim 1, characterized in that: The second regulating structure can also be used to absorb heat from the heat source and conduct it to the third rib (81) and / or the fourth rib (82).

3. The flow field regulating radiator as described in claim 1, characterized in that: The cross-sectional area of ​​the first multi-slit zone (3) and the second multi-slit zone (5) perpendicular to the coolant flow direction is greater than the cross-sectional area of ​​the first single-flow zone (2), the middle single-flow zone (4), and the second single-flow zone (6).

4. The flow field regulating radiator as described in claim 1, characterized in that: The top wall of the main body (1) has through openings corresponding to the positions of the first multi-slit area (3), the middle single-flow area (4), and the second multi-slit area (5); The radiator also includes a first cover plate (91), a second cover plate (92) and a third cover plate (93). The first cover plate (91) is closed and welded to the opening corresponding to the first multi-slit area (3). The third cover plate (93) is closed and welded to the opening corresponding to the middle single-flow area (4). The second cover plate (92) is closed and welded to the opening corresponding to the second multi-slit area (5). The first single-flow zone (2) and the second single-flow zone (6) are non-penetrating channels formed directly on the main body (1).

5. The flow field regulating radiator as described in claim 4, characterized in that: Multiple first ribs (71) are connected to the first cover plate (91) and installed together with it; Multiple third ribs (81) are connected to and installed together with the second cover plate (92).

6. The flow field regulating radiator as described in claim 1, characterized in that: Multiple second ribs (72) are integral with the main body (1) or fixed by welding; The multiple fourth ribs (82) are integral with the main body (1) or fixed by welding.

7. The flow field regulating radiator as described in claim 1, characterized in that: The flow channel shape of the single flow zone (4) is arc-shaped or U-shaped.

8. The flow field regulating radiator as described in claim 1, characterized in that: The main body (1), the first adjustment structure and the second adjustment structure are made of thermally conductive metal material.

9. The flow field regulating radiator as described in any one of claims 1 to 8, characterized in that: A confluence zone (11) is provided between the first single-flow zone (2) and the first multi-slit zone (3), between the middle single-flow zone (4) and the first multi-slit zone (3), between the middle single-flow zone (4) and the second multi-slit zone (5), and between the second single-flow zone (6) and the second multi-slit zone (5). The cross-sectional area of ​​the confluence zone (11) is not less than the cross-sectional area of ​​the multi-slot zone, and is used to distribute the coolant from the single flow zone to all the slots of the entire multi-slot zone.

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