A high efficiency heat sink

Abstract

The utility model relates to a kind of high-efficiency heat sink, including first manifold, second manifold, flat tube, liquid inlet, liquid outlet;The first manifold is oppositely arranged with the second manifold;The first manifold is communicated with the second manifold by the flat tube;The first manifold and the second manifold array are provided with several groups;The liquid inlet is corresponded with the first manifold below;The liquid outlet is corresponded with the first manifold above;The flat tube is along the first manifold array and provided with several;The first manifold is all provided with baffle;Each group of the first manifold is communicated between. The flow path of cooling liquid in flat tube is short and unevenly distributed, often only through part of flat tube and then quickly discharged, resulting in a large number of flat tubes not fully participating in heat exchange, and the utilization rate of heat dissipation area is low.

Description

Technical Field

[0001] This utility model relates to the field of cooling systems, and more particularly to a high-efficiency heat dissipation device. Background Technology

[0002] In existing technologies, heat dissipation devices are key components for ensuring stable operation of electronic equipment, automotive cooling systems, and industrial machinery. Their heat dissipation efficiency directly affects the performance and lifespan of the equipment. Currently, traditional heat dissipation devices have significant shortcomings in water flow guidance, heat exchange, and water pressure control, making it difficult to meet the heat dissipation requirements of high-power equipment.

[0003] Traditional cooling systems often employ a combination of a single manifold and flat tubes. The coolant flows through the flat tubes in a short and uneven manner, often only passing through a portion of the tubes before being quickly discharged. This results in a large number of flat tubes not fully participating in heat exchange, leading to low utilization of the heat dissipation area and poor overall cooling performance. Especially when the cooling system needs to achieve comprehensive cooling from left to right, the traditional structure cannot guide the coolant to flow sequentially through all the flat tubes, easily causing localized heat accumulation and creating cooling blind spots, thus affecting the overall cooling stability of the equipment. Utility Model Content

[0004] This application provides a high-efficiency heat dissipation device, which solves the problem in the prior art where the coolant has a short flow path and uneven distribution in the flat tube, often only flowing through part of the flat tube before being quickly discharged, resulting in a large number of flat tubes not fully participating in heat exchange and low heat dissipation area utilization.

[0005] The technical solutions adopted in the embodiments of this application are as follows.

[0006] A high-efficiency heat dissipation device includes a first manifold, a second manifold, a flat tube, a liquid inlet, and a liquid outlet; the first manifold and the second manifold are arranged opposite to each other; the first manifold and the second manifold are connected through the flat tube; several groups of the first manifold and the second manifold are arranged in an array; the liquid inlet corresponds to the lower first manifold; the liquid outlet corresponds to the upper first manifold; several flat tubes are arranged along the array of the first manifolds; each of the first manifolds is provided with a baffle; and each group of the first manifolds is connected to each other.

[0007] As a further improvement to the above technical solution: The bottom of the first manifold located at the top has a first hole; the first hole array has several holes; the first hole is located on the side of the baffle away from the liquid outlet.

[0008] A second hole is provided at the bottom of the first manifold located in the middle; the second hole is located on the side of the baffle near the liquid outlet.

[0009] Fins are provided between the flat tubes; the fins are serpentine in shape.

[0010] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. Due to the adoption of multi-layer connectivity and orifice guidance, full-area flow is achieved: Multiple sets of first and second manifold arrays are arranged, and the first manifolds in each set are interconnected. Combined with the first orifice at the bottom of the upper first manifold (on the side of the baffle away from the outlet) and the second orifice at the bottom of the middle first manifold (on the side of the baffle closer to the outlet), an orderly layered flow guiding structure is formed. After the coolant enters from the lower first manifold, it cannot flow directly due to the baffle obstruction. Instead, it must flow along the length of the manifold and diffuse upwards layer by layer through the orifices, evenly distributing to all the flat tubes in each layer. This avoids the problem of "only flowing through part of the flat tubes" in traditional structures, allowing all flat tubes to fully participate in heat exchange and significantly improving the utilization rate of the heat dissipation area. Baffles prevent short-flow and extend heat exchange time: Baffles in the first manifold forcefully change the flow direction of the coolant, forcing the coolant to flow completely in each manifold before entering the next layer. This extends the flow path and heat exchange time of the coolant in the device, ensuring full contact between the coolant and the flat tube, reducing the phenomenon of "discharge before sufficient heat exchange", further ensuring the uniformity of heat dissipation, and eliminating local heat accumulation and heat dissipation blind spots when dissipating heat from left to right in traditional structures.

[0011] 2. Serpentine fins enhance heat dissipation and improve convection efficiency: The serpentine fins arranged between the flat tubes significantly increase the contact area with air compared to traditional straight fins. Simultaneously, the serpentine structure disrupts the air boundary layer, promoting air turbulence and flow within the fin gaps, accelerating heat transfer from the fins to the air. When the coolant absorbs heat within the flat tubes, the heat is not only dissipated through the outer wall of the flat tubes but also rapidly transferred to the serpentine fins, achieving highly efficient "liquid-solid-gas" heat exchange. This allows the device to quickly remove the large amounts of heat generated by high-power equipment, meeting the heat dissipation requirements of high-power scenarios. Multi-layer structure expands capacity and improves heat dissipation capacity per unit space: Multiple sets of the first and second manifold arrays are arranged to form multi-layer heat exchange units within the same installation space. This effectively increases the heat exchange area and heat exchange path vertically while maintaining the same horizontal space. Compared to the traditional single manifold structure, the heat exchange capacity per unit space is greatly improved, which can cope with the heat output of higher power equipment (such as high-power electronic modules and high-load automotive cooling systems) and avoid performance degradation or shortened lifespan due to insufficient heat dissipation.

[0012] 3. Compact Layout, Adaptable to Space-Constrained Scenarios: The design of multiple stacked manifold arrays achieves multi-layer heat exchange through vertical space utilization, eliminating the need for additional horizontal footprint and resulting in a compact overall structure. It can be flexibly integrated into confined installation areas within electronic devices or complex piping layouts in automotive cooling systems, requiring no significant modifications to existing equipment installation space, demonstrating strong adaptability. Flexible Adjustment, Compatible with Multiple Cooling Requirements: The number of flat tube arrays and manifold groups can be flexibly adjusted according to equipment power (e.g., increasing the number of manifold groups and flat tubes for high-power scenarios). The spacing and height of the serpentine fins can also adapt to different airflow environments (e.g., increasing fin spacing in well-ventilated scenarios and decreasing fin height in confined spaces). Furthermore, the inlet and outlet positions conform to conventional equipment piping connection habits, requiring no additional special interfaces, making it compatible with applications in electronic devices, automotive cooling systems, industrial machinery, and many other fields. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the high-efficiency heat dissipation device in this utility model.

[0014] Figure 2 This is a cross-sectional view of the high-efficiency heat dissipation device in this utility model.

[0015] In the diagram: 1. First manifold; 2. Second manifold; 3. Flat tube; 4. Liquid inlet; 5. Liquid outlet; 6. Fin; 11. Baffle; 12. First hole; 13. Second hole. Detailed Implementation

[0016] This application provides a high-efficiency heat dissipation device, which solves the problem in the prior art where the coolant has a short flow path and uneven distribution in the flat tube, often only flowing through part of the flat tube before being quickly discharged, resulting in a large number of flat tubes not fully participating in heat exchange and low heat dissipation area utilization.

[0017] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows: To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] Both the first manifold 1 and the second manifold 2 are rectangular aluminum alloy tubes, which are arranged in parallel and opposite to each other to form three heat exchange units: upper, middle and lower. The distance between the first manifold 1 and the second manifold 2 in each unit is 20cm. The horizontal length of the overall device is consistent with the length of the heat dissipation surface of the vehicle central control module, and the vertical height is 15cm to ensure full coverage of the heat-generating area.

[0019] The flat tube 3 is a flat aluminum alloy tube. 15 tubes are arranged in an array along the length of the first manifold 1 in each heat exchange unit. The two ends of each flat tube 3 are welded to the first manifold 1 and the second manifold 2 on the same side, respectively, to form a closed flow channel of "first manifold 1-flat tube 3-second manifold 2". The three layers of flat tubes 3 correspond to each other and are arranged in parallel.

[0020] The liquid inlet 4 is a metal quick connector, welded to the left end of the lower first manifold 1; the liquid outlet 5 is also a metal quick connector, welded to the right end of the upper first manifold 1, and connected to the vehicle coolant circulation system to form a liquid circulation path.

[0021] Snake-shaped aluminum fins 6 are welded between the flat tubes 3. The fins 6 are attached to the outer wall of the flat tubes 3 and are continuously distributed along the length of the flat tubes 3 to enhance the air convection heat transfer effect.

[0022] Each first manifold 1 has a baffle 11 welded inside, which fits against the inner wall of the manifold: the baffle 11 of the lower first manifold 1 is 45cm away from the liquid inlet; the baffle 11 of the middle first manifold 1 is 8cm away from its left end; the baffle 11 of the upper first manifold 1 is 55cm away from the liquid outlet, which is used to prevent direct short-flow of liquid.

[0023] The bottom of the middle first manifold 1 is provided with a second hole 13, a total of 3 holes, which are evenly distributed along the length of the manifold and located on the side of the baffle 11 near the outlet 5; the bottom of the upper first manifold 1 is provided with a first hole 12, a total of 3 holes, which are also evenly distributed and located on the side of the baffle 11 away from the outlet 5.

[0024] The first manifold 1 of each layer is connected to the first manifold 1 of the adjacent layer through a short pipe: the right end of the lower first manifold 1 is connected to the left end of the middle first manifold 1 through a short pipe; the right end of the middle first manifold 1 is connected to the left end of the upper first manifold 1 through a short pipe, ensuring that the liquid can flow upward layer by layer.

[0025] Lower Unit Filling Stage: After the vehicle's coolant circulation system is activated, coolant flows from inlet 4 into the left end of the lower first manifold 1. Due to the baffle 11 inside the lower first manifold 1, it cannot flow directly to the right and can only diffuse along the space on the left side of the manifold, evenly entering the lower 15 flat tubes 3. While flowing in the flat tubes 3, the coolant absorbs heat transferred from the vehicle's central control module, then flows into the lower second manifold 2, and then returns to the right end of the lower first manifold 1 through the connecting pipe at the right end of the lower second manifold 2, forming a localized circulation within the lower unit. As coolant continues to be injected, the liquid levels in the lower first manifold 1 and the lower second manifold 2 gradually rise until fully filled.

[0026] Mid-layer unit flow stage: When the liquid level in the lower layer first manifold 1 is higher than the connecting port at the left end of the middle first manifold 1, the coolant flows into the left end of the middle first manifold 1 through the connecting pipe. Blocked by the baffle 11 inside the middle first manifold 1, the coolant first diffuses within the manifold to the left of the baffle 11, then flows into the space to the right of the baffle 11 through the second hole 13 at the bottom of the middle first manifold 1, and subsequently enters evenly into the 15 flat tubes 3 of the mid-layer. The coolant continues to absorb heat within the flat tubes 3 of the mid-layer, flows into the middle layer second manifold 2, and then flows back to the right end of the middle first manifold 1 through the connecting pipe at the right end of the middle layer second manifold 2, forming a local circulation in the mid-layer unit, and the liquid level gradually rises until fully filled.

[0027] Upper Unit Flow and Discharge Stage: When the liquid level in the middle layer first manifold 1 is higher than the connecting port at the left end of the upper first manifold 1, the coolant flows into the left end of the upper first manifold 1 through the connecting pipe. Blocked by the baffle 11 inside the upper first manifold 1, the coolant diffuses within the manifold to the left of the baffle 11. When the liquid level rises to the position of the first hole 12, the coolant further fills the space to the left of the baffle 11 through the first hole 12, ensuring that all 15 upper flat pipes 3 are filled with coolant. After absorbing heat in the lower flat pipes 3, the coolant flows into the upper layer second manifold 2, then flows back to the right end of the upper first manifold 1 through the connecting pipe at the right end of the upper second manifold 2, and finally flows out from the outlet 5, returning to the vehicle's coolant circulation system for cooling, completing a full cycle.

[0028] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0029] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A high-efficiency heat dissipation device, comprising a first manifold (1), a second manifold (2), a flat tube (3), an inlet (4), and an outlet (5); the first manifold (1) and the second manifold (2) are arranged opposite to each other; the first manifold (1) and the second manifold (2) are connected through the flat tube (3); a plurality of the first manifold (1) and the second manifold (2) are arranged in an array; the inlet (4) corresponds to the lower first manifold (1); the outlet (5) corresponds to the upper first manifold (1); a plurality of the flat tubes (3) are arranged along the first manifold (1); characterized in that: Each of the first manifolds (1) is equipped with a baffle (11); each group of the first manifolds (1) is connected to each other.

2. The high-efficiency heat dissipation device as described in claim 1, characterized in that, The bottom of the first manifold (1) located above is provided with a first hole (12); a plurality of the first holes (12) are provided in an array; the first hole (12) is located on the side of the baffle (11) away from the liquid outlet (5).

3. The high-efficiency heat dissipation device as described in claim 2, characterized in that, A second hole (13) is provided at the bottom of the first manifold (1) located in the middle; the second hole (13) is located on the side of the baffle (11) near the liquid outlet (5).

4. The high-efficiency heat dissipation device as described in claim 2, characterized in that, Fins (6) are provided between the flat tubes (3); the fins (6) are serpentine.

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