A heat exchanger with a split flow structure

Abstract

The present invention relates to the technical field of heat exchangers, and specifically to a heat exchanger with a diversion structure, comprising a heat dissipation core, an upper water chamber and a lower water chamber, wherein the upper water chamber and the lower water chamber are respectively arranged above and below the heat dissipation core, a water inlet pipe is arranged on the front side of the upper water chamber, a water outlet pipe is arranged on the front side of the lower water chamber, and a guide plate is arranged on the rear wall of the upper water chamber and is distributed opposite to the water inlet pipe, wherein the guide plate comprises a first guide curved surface and a second guide curved surface, and a dividing line is formed between the first guide curved surface and the second guide curved surface. A partition plate located below the water inlet pipe is also arranged in the upper water chamber, and diversion holes of different sizes are arranged on the partition plate. A water flow distribution cavity is formed on the upper end surface of the heat dissipation core, and an adjustment plate is floatingly arranged in the water flow distribution cavity, and a small hole is arranged on the adjustment plate. The ingenious design of the guide plate, the partition plate and the adjustment plate in the present invention effectively improves the heat dissipation performance of the heat dissipation core. The synergistic effect of these components enables the heat dissipation core to maintain a stable heat dissipation effect during long-term use.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, and in particular to a heat exchanger with a flow splitting structure. Background Art

[0002] When designing the structure of conventional tractor radiators, i.e. heat exchangers, the water inlet pipe is usually located in front of the upper water chamber of the radiator due to the limitations of the space structure inside the hood. After the water flows through the water inlet pipe, it directly impacts the rear wall of the upper water chamber, causing kinetic energy loss. Taking a 140 horsepower radiator as an example, the water pump flow is usually around 210L / min, and the diameter of the water inlet pipe is usually selected to be around 45mm-50mm, so the water inlet pipe flow rate will reach 2.2m / s. After the high-speed water flows into the upper water chamber along the water inlet pipe, it forms a 90° angle with the heat pipe, which inevitably increases the water resistance and increases the radiator pressure drop. The size of the radiator pressure drop not only affects the heat dissipation efficiency of the radiator, but also affects the performance and stability of the entire cooling system. Excessive pressure drop will increase the energy consumption of the water pump, reduce the efficiency of the cooling system, and may even cause radiator failures such as leakage or cracking.

[0003] In addition, the distance between the heat pipe and the water inlet pipe is different, and the water resistance generated by the heat pipe is different, which will lead to uneven water flow. The amount of water flowing through the heat pipe needs to be related to the heat dissipation performance of different areas of the core. Ideally, the area with high heat dissipation performance should have a large amount of water flowing. Conventional radiators only distribute the water evenly without diverting it, or just add a layer of partition to make the water flow more to both sides. This cannot maximize the utilization rate of the radiator.

[0004] In the prior art, the patent document with the authorization announcement number CN209341879U discloses a tractor radiator with a decontamination function, including an upper water chamber, a lower water chamber and a heat dissipation chip, a heat dissipation chip is installed between the upper water chamber and the lower water chamber, the upper water chamber and the lower water chamber are connected through the heat dissipation chip, the heat dissipation chip includes a plurality of heat dissipation pipes arranged at equal intervals, and the upper and lower ends of the heat dissipation pipes are respectively fixedly connected to the upper water chamber and the lower water chamber; and also includes a decontamination device. It is convenient to perform decontamination and dust removal operations on the outer surface of the heat dissipation chip, and at the same time of decontamination and dust removal, it will not affect the circulation of air volume in the heat dissipation chip, which is conducive to the improvement of heat dissipation effect. The above technical scheme can improve the heat dissipation efficiency to a certain extent, but in combination with the attached drawings, the water inlet pipe is arranged at the front side of the upper water chamber, and the water inlet pipe is directly introduced in the direction perpendicular to the heat dissipation pipe, which inevitably increases the water resistance, increases the pressure drop of the radiator, and affects the overall heat exchange efficiency. Summary of the invention

[0005] The present invention provides a heat exchanger with a flow splitting structure to solve the technical problems in the prior art that kinetic energy of water flow is obviously lost after entering and unreasonable water flow distribution affects the overall heat exchange efficiency.

[0006] In order to solve the above problems, the present invention provides a heat exchanger with a flow splitting structure adopting the following technical solution:

[0007] The invention comprises a heat dissipation core, an upper water chamber and a lower water chamber, wherein the upper water chamber and the lower water chamber are respectively arranged above and below the heat dissipation core, a water inlet pipe is arranged on the front side of the upper water chamber, a water outlet pipe is arranged on the front side of the lower water chamber, a guide plate which is distributed opposite to the water inlet pipe is arranged on the inner and rear wall of the upper water chamber, the guide plate comprises a first guide curved surface and a second guide curved surface, a dividing line is formed between the first guide curved surface and the second guide curved surface, the dividing line divides the cross section of the water inlet pipe into two parts, and the water flow entering through the water inlet pipe is diverted by the guide plate and then guided to the side and the bottom through the first guide curved surface and the second guide curved surface respectively.

[0008] The upper water chamber is also provided with a partition below the water inlet pipe, and the partition is provided with diversion holes of different sizes.

[0009] The upper end surface of the heat dissipation core is formed with a water flow distribution cavity, in which an adjustment plate is floatingly arranged, and small holes are arranged on the adjustment plate. The adjustment plate cooperates with diversion holes of different sizes to perform adaptive tilt adjustment and is used to assist in distributing water flow.

[0010] By adopting the above technical solution, the guide plate effectively divides the water flow into two parts, so that the water flow can cover the upper water chamber more evenly and effectively, and at the same time ensure that the water flow maintains a relatively constant speed during the flow, thereby reducing energy loss. By providing a baffle with diversion holes of different sizes, it can be adjusted according to the actual water flow requirements and the heat dissipation efficiency distribution of the heat dissipation core, while generating water resistance and balancing the flow rate. Through the coordinated action of the guide plate and the baffle, the overall heat dissipation effect and efficiency are improved.

[0011] After passing through the diversion holes of different sizes on the partition, the water will produce different flow rates due to the different sizes of resistance. The adjustment plate will tilt when impacted by water flows of different resistances. The inclined adjustment plate will have a certain diversion effect, thereby further assisting in distributing the water flow and helping to adapt to the heat dissipation efficiency distribution of the heat dissipation core.

[0012] Furthermore, the two areas of the cross section of the water inlet pipe divided by the dividing line are S1 and S2, respectively, wherein S1 is close to the first guide curved surface, and S2 is close to the second guide curved surface.

[0013] The distance between one side of the first guide curved surface away from the dividing line and the dividing line is a, and the distance between one side of the second guide curved surface away from the dividing line and the dividing line is b.

[0014] The distance between one end of the upper water chamber close to the first guide curved surface and the dividing line is m, and the distance between one end of the upper water chamber close to the second guide curved surface and the dividing line is n.

[0015] Among them, S1:S2=a:b=m:n.

[0016] By adopting the above technical solution and through corresponding proportional settings, the water flow is prevented from being too concentrated in some areas and too sparse in other areas, thereby improving the overall heat dissipation efficiency of the heat dissipation core, helping to optimize the water flow path, reducing water flow resistance and energy loss, and reducing water flow resistance and pressure drop in the heat dissipation core to achieve more efficient heat dissipation.

[0017] Furthermore, the first guide curved surface and the second guide curved surface gradually incline from top to bottom toward the rear side of the upper water chamber.

[0018] By adopting the above technical solution, the first guide curved surface and the second guide curved surface enable the lateral water flow entering from the water inlet pipe to have a downward guiding effect. The gradual curved surface can ensure that the water flow maintains a relatively constant speed during the flow process, thereby reducing energy loss.

[0019] Furthermore, the first guide curved surface and the second guide curved surface are both gradually inclined from the dividing line to the side away from the dividing line toward the rear side of the upper water chamber.

[0020] By adopting the above technical solution, the first guide curved surface and the second guide curved surface enable the lateral water flow entering from the water inlet pipe to have a guiding effect of diverting to both sides. The gradual curved surface can ensure that the water flow maintains a relatively constant speed during the flow process, thereby reducing energy loss.

[0021] Furthermore, the partition is a concave surface and the lowest point is below the water inlet pipe.

[0022] Furthermore, the diversion hole gradually becomes larger from front to back, and the diversion hole gradually becomes larger from the dividing line to both sides.

[0023] With the above technical solution, the lowest point of the partition is located below the water inlet pipe to better distribute the water impact pressure, and the diversion holes are arranged in stages, so that the water flow size in each area can be reasonably distributed according to the cooling efficiency differences in each area of ​​the heat dissipation core, generating water resistance to balance the flow rate.

[0024] Furthermore, a flange plate is provided on the side of the diversion hole close to the dividing line, and the flange plates are inclined toward the side pointing to the dividing line and point to the junction of the first guide curved surface and the second guide curved surface on the upper end surface of the guide plate.

[0025] By adopting the above technical solution, by setting the flange plate, when simulating the movement of water flow, the water can flow into the hole more smoothly, avoiding the vortex and turbulence caused by the sudden change of the water flow direction. In addition, the design of the flange plate can also effectively disperse the impact of the water flow on the partition, reduce the stress and deformation of the partition caused by the impact of the water flow, thereby enhancing the structural stability of the heat exchanger.

[0026] Furthermore, springs are provided between the front and rear sides of the bottom surface of the regulating plate and the bottom surface of the water flow distribution cavity, and a gap is left between the side surface of the regulating plate and the side wall of the water flow distribution cavity.

[0027] Furthermore, a distance is left between the upper end surface of the regulating plate and the upper end surface of the water flow distribution cavity, and the depth h of the water flow distribution cavity is 10 cm-20 cm.

[0028] By adopting the above technical solution, the setting of the spring enables the adjustment plate to perform minute dynamic adjustments under the action of the water flow, thereby realizing dynamic adjustment of the water flow distribution, which helps to reasonably distribute the water flow according to the size of the water flow.

[0029] Furthermore, the heat dissipation core includes heat dissipation tubes arranged in an interval array and heat dissipation fins arranged outside the heat dissipation tubes, the top end of the heat dissipation tubes is connected to the water flow distribution cavity, and the upper end surface of the heat dissipation tubes is flush with the bottom surface of the water flow distribution cavity, and the bottom end of the heat dissipation tubes is connected to the lower water chamber.

[0030] By adopting the above technical solution, the upper end of the heat dissipation pipe is arranged flush with the bottom surface of the water flow distribution chamber, which reduces the resistance of the water flow inside the water flow distribution chamber and improves the stability and efficiency of the water flow.

[0031] The beneficial effects of the present invention are:

[0032] In the present invention, the water flow is effectively divided into two parts through the function of the guide plate and directed to the side and bottom, thereby avoiding excessive concentration or loss of water flow in certain areas, and at the same time helping to reduce energy loss caused by flow velocity changes, further improving heat dissipation efficiency.

[0033] The partition can dynamically adjust the water flow distribution according to the heat dissipation efficiency distribution of the heat dissipation core and actual needs to ensure the maximum heat dissipation effect.

[0034] The adjustment plate can automatically adapt to different water flow resistance and heat dissipation requirements. When the water flows through the diversion holes of different sizes, the adjustment plate will tilt according to the resistance, thereby further assisting in distributing the water flow. This adaptive adjustment mechanism improves the adaptability and stability of the radiator.

[0035] The ingenious design of the guide plate, baffle and adjustment plate not only improves the heat dissipation performance of the heat dissipation core, but also enhances its structural stability. The synergistic effect of these components enables the heat dissipation core to maintain a stable heat dissipation effect during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0037] Figure 1 It is a structural schematic diagram of a heat exchanger with a flow splitting structure according to the present invention;

[0038] Figure 2 It is a top view of the internal structure of the upper water chamber in the present invention;

[0039] Figure 3 It is a front view of the upper water chamber in the present invention;

[0040] Figure 4 This is one of the structural schematic diagrams of the guide plate in the present invention;

[0041] Figure 5 This is the second structural schematic diagram of the guide plate in the present invention;

[0042] Figure 6 It is a schematic structural diagram of the heat dissipation core in the present invention;

[0043] Figure 7 It is a side cross-sectional view of the heat dissipation core in the present invention.

[0044] Description of reference numerals:

[0045] 1. heat dissipation core; 11. water flow distribution chamber; 111. adjustment plate; 112. spring; 12. heat dissipation pipe; 13. heat dissipation fin plate; 2. upper water chamber; 21. water inlet pipe; 22. guide plate; 221. first guide curved surface; 222. second guide curved surface; 223. dividing line; 23. partition; 231. diversion hole; 232. flange plate; 3. lower water chamber; 31. water outlet pipe. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0047] Any number of elements in the drawings is for illustration and not limitation, and any naming is for distinction only and does not have any limiting meaning.

[0048] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0049] Embodiments of the heat exchanger with a flow splitting structure provided by the present invention:

[0050] like Figures 1 to 7 As shown, it includes a heat dissipation core 1, an upper water chamber 2 and a lower water chamber 3. The heat dissipation core 1 includes heat dissipation tubes 12 arranged in an interval array and heat dissipation fins 13 arranged outside the heat dissipation tubes 12. The upper water chamber 2 and the lower water chamber 3 are respectively arranged above and below the heat dissipation core 1. The front side of the upper water chamber 2 is provided with a water inlet pipe 21, and the front side of the lower water chamber 3 is provided with a water outlet pipe 31.

[0051] The two ends of the heat dissipation pipe 12 are respectively connected to the upper water chamber 2 and the lower water chamber 3. The high-temperature coolant enters the upper water chamber 2 through the water inlet pipe 21, and then passes through the heat dissipation pipe 12 and the heat dissipation fin plate 13 to transfer the heat carried by the coolant. The coolant after heat exchange and heat dissipation flows out through the lower water chamber 3.

[0052] A guide plate 22 is provided on the rear wall of the upper water chamber 2 and is distributed opposite to the water inlet pipe 21. The guide plate 22 includes a first guide curved surface 221 and a second guide curved surface 222. The water flow entering through the water inlet pipe 21 is diverted by the guide plate 22 and then directed to the side and the bottom through the first guide curved surface 221 and the second guide curved surface 222 respectively.

[0053] A dividing line 223 is formed between the first guide curved surface 221 and the second guide curved surface 222. The dividing line 223 divides the cross section of the water inlet pipe 21 into two parts. The areas of the two parts of the cross section of the water inlet pipe 21 divided by the dividing line 223 are S1 and S2 respectively, wherein S1 is close to the first guide curved surface 221, and S2 is close to the second guide curved surface 222.

[0054] The distance between one side of the first guide curved surface 221 away from the dividing line 223 and the dividing line 223 is a, and the distance between one side of the second guide curved surface 222 away from the dividing line 223 and the dividing line 223 is b.

[0055] The distance between one end of the upper water chamber 2 close to the first guide curved surface 221 and the dividing line 223 is m, and the distance between one end of the upper water chamber 2 close to the second guide curved surface 222 and the dividing line 223 is n;

[0056] Among them, S1:S2=a:b=m:n.

[0057] By setting the corresponding proportions, we can avoid the water flow being too concentrated in some areas and too sparse in other areas, thereby optimizing the water flow path.

[0058] In this embodiment, the water inlet pipe 21 is arranged near the left end, the first guide curved surface 221 guides the water flow downward and leftward, and the second guide curved surface 222 guides the water flow rightward and downward. The water flow passing through the area S1 is guided by the first guide curved surface 221, and the water flow passing through the area S2 is guided by the second guide curved surface 222. Since the water inlet pipe 21 is arranged near the left end and is arranged in proportion according to the structure, it can ensure that the coolant is distributed more evenly in the upper water chamber 2.

[0059] Specifically, the first guide curved surface 221 and the second guide curved surface 222 gradually incline from top to bottom toward the rear side of the upper water chamber 2. With this structure, the spacing between the first guide curved surface 221 and the second guide curved surface 222 and the water inlet pipe 21 gradually increases in the vertical direction, so that the water flow is gradually directed downward to prevent the water flow from directly impacting the rear wall of the upper water chamber 2. The 90° angle between the rear wall and the bottom surface will inevitably increase the water resistance and increase the pressure drop of the heat dissipation core 1. By gradually inclining for guidance, the kinetic energy loss of the water flow is reduced as much as possible.

[0060] Specifically, the first guide curved surface 221 and the second guide curved surface 222 are both gradually inclined from the dividing line 223 to the side away from the dividing line 223 toward the rear side of the upper water chamber 2. The water flow separated by the dividing line 223 is guided to the left and right sides through the first guide curved surface 221 and the second guide curved surface 222, respectively, to optimize the path of the water flow, distribute the water flow more reasonably, and reduce the kinetic energy loss of the water flow as much as possible.

[0061] In this embodiment, a partition plate 23 is further provided in the upper water chamber 2 and is located below the water inlet pipe 21 . The partition plate 23 is provided with diversion holes 231 of different sizes.

[0062] The partition plate 23 is a concave surface and the lowest point is located below the water inlet pipe 21 .

[0063] The diverter hole 231 gradually becomes larger from front to back, and the diverter hole 231 gradually becomes larger from the dividing line 223 to both sides.

[0064] In the specific working process, the heat dissipation core 1 adopts suction-type auxiliary cooling. The heat dissipation pipe 12 at the rear of the heat dissipation core 1 is first exposed to the cold air. When the cold air just enters the heat dissipation core 1 for heat exchange, the temperature difference is the largest, and the convective heat transfer efficiency is high. Therefore, the rear diversion hole 231 is relatively large.

[0065] Since the wind resistance of each area on the windward side of the heat dissipation core 1 is different, the air intake volume will be different, and the heat dissipation efficiency of each area of ​​the heat dissipation core 1 will also be different. The diverter hole 231 is set according to the heat dissipation efficiency distribution diagram of the heat dissipation core 1, so that the water flow in the area with high heat dissipation efficiency is increased, thereby improving the heat dissipation efficiency.

[0066] The apertures on both sides gradually increase, which is more helpful to make the water entering from the water inlet pipe 21 flow to both sides, ensuring a more uniform distribution in the lateral direction.

[0067] In this embodiment, a flange plate 232 is provided on the side of the diversion hole 231 close to the dividing line 223, and the flange plate 232 is inclined toward the side pointing to the dividing line 223 and points to the junction of the first guide surface 221 and the second guide surface 222 on the upper end surface of the guide plate 22.

[0068] After the water flow is guided by the guide plate 22, it first reaches the rear side of the partition 23 and then flows to the front side. By setting the flange plate 232, when simulating the movement of water flow, the water can flow into the diversion hole 231 more smoothly, avoiding the eddy current and turbulence caused by the sudden change of the water flow direction. In addition, the design of the flange plate 232 can also effectively disperse the impact of the water flow on the partition 23, reduce the stress and deformation of the partition 23 caused by the impact of the water flow, and thus enhance the structural stability of the heat exchanger.

[0069] In this embodiment, a water flow distribution chamber 11 is formed on the upper end surface of the heat dissipation core 1. An adjustment plate 111 is floatingly provided in the water flow distribution chamber 11. Small holes are provided on the adjustment plate 111. The adjustment plate 111 cooperates with the diversion holes 231 of different sizes to perform adaptive tilt adjustment and is used to assist in distributing the water flow.

[0070] Springs 112 are provided between the bottom surface of the adjusting plate 111 and the bottom surface of the water flow distribution chamber 11 on both sides, and a gap is left between the side surface of the adjusting plate 111 and the side wall of the water flow distribution chamber 11. The side gap reduces friction and wear between the two, which helps to maintain the flexibility of the adjusting plate 111.

[0071] The provision of the spring 112 enables the regulating plate 111 to perform minute dynamic adjustments under the action of the water flow, thereby achieving dynamic adjustment of the water flow distribution, and facilitating reasonable distribution of the water flow according to the size of the water flow.

[0072] During specific use, the diversion hole 231 on the rear side is larger, and the water flow passing through it is relatively large. When the adjustment plate 111 is impacted by water flows of different flow rates, it will tilt toward the rear side. The tilted state of the adjustment plate 111 will play a role in guiding the flow backwards, thereby assisting in the distribution of the water flow, thereby increasing the amount of water flowing through areas with high heat dissipation efficiency and improving the heat dissipation efficiency.

[0073] There is a gap between the upper end surface of the regulating plate 111 and the upper end surface of the water flow distribution chamber 11 , and the depth h of the water flow distribution chamber 11 is 15 cm.

[0074] The water flow distribution chamber 11 having a certain depth can ensure the regulating effect of the regulating plate 111 .

[0075] The top end of the heat dissipation pipe 12 is connected to the water flow distribution chamber 11 , the upper end surface of the heat dissipation pipe 12 is flush with the bottom surface of the water flow distribution chamber 11 , and the bottom end of the heat dissipation pipe 12 is connected to the lower water chamber 3 .

[0076] The upper end of the heat dissipation pipe 12 is arranged flush with the bottom surface of the water flow distribution chamber 11, which reduces the resistance of the water flow inside the water flow distribution chamber 11 and improves the stability and efficiency of the water flow.

[0077] When the heat exchanger with a diversion structure of this embodiment is used, the high-temperature coolant enters the upper water chamber 2 from the water inlet pipe 21, and is reasonably diverted into two parts through the guide plate 22. At the same time, it is diverted to both sides and downward through the first guide curved surface 221 and the second guide curved surface 222, respectively, so as to reasonably distribute the water flow while minimizing the kinetic energy loss of the water flow. The diverted water flows down through the diversion hole 231 on the partition 23. The partition 23 reasonably distributes the water flow size in each area and generates water resistance to balance the flow rate. In addition, due to the different wind resistances in each area on the windward side of the heat dissipation core 1, the air intake will be different, and the heat dissipation efficiency of each area of ​​the heat dissipation core 1 will also be different. The setting of the diversion hole 231 is adjusted according to the heat dissipation efficiency distribution diagram of the heat dissipation core 1, so that the water flow in the area with high heat dissipation efficiency is increased, thereby improving the heat dissipation efficiency.

[0078] After the guide plate 22 reduces the kinetic energy loss of the water flow, if there is no partition 23, the coolant flow rate in the heat dissipation tube 12 will actually increase. If the flow rate is simply increased, the heat flow of the coolant will be too large, and the heat dissipation of the heat dissipation tube 12 will not be timely, which will reduce the heat dissipation efficiency. However, after adding the partition 23, the water flow size in each area is reasonably distributed and water resistance is generated to balance the flow rate. Therefore, the two structures cooperate with each other, so that the heat dissipation core 1 can improve the efficiency as much as possible and enhance the heat dissipation effect.

[0079] The diversion hole 231 on the rear side is larger, and the water flow passing through it is relatively large. When the adjustment plate 111 is impacted by water flows of different flow rates, it will tilt toward the rear. The tilted state of the adjustment plate 111 will play a role in guiding the flow backwards, thereby assisting in the distribution of the water flow, thereby increasing the amount of water flowing through areas with high heat dissipation efficiency and improving the heat dissipation efficiency.

[0080] After the heat dissipation pipe 12 and the heat dissipation fins 13 are applied, the heat carried by the coolant is transferred out, and after the heat exchange is completed, the coolant flows into the lower water chamber 3 and flows out through the outlet pipe 31 .

[0081] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and the like, which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0082] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A heat exchanger with a flow-dividing structure, comprising a heat dissipation core (1), an upper water chamber (2) and a lower water chamber (3), wherein the upper water chamber (2) and the lower water chamber (3) are respectively arranged above and below the heat dissipation core (1), a water inlet pipe (21) is arranged on the front side of the upper water chamber (2), and a water outlet pipe (31) is arranged on the front side of the lower water chamber (3), characterized in that: A guide plate (22) is provided on the inner rear wall of the upper water chamber (2) and is arranged opposite to the water inlet pipe (21); the guide plate (22) comprises a first guide curved surface (221) and a second guide curved surface (222); a dividing line (223) is formed between the first guide curved surface (221) and the second guide curved surface (222); the dividing line (223) divides the cross section of the water inlet pipe (21) into two parts; water entering through the water inlet pipe (21) is divided by the guide plate (22) and then directed to the side and the bottom through the first guide curved surface (221) and the second guide curved surface (222); The water supply chamber (2) is further provided with a partition (23) located below the water inlet pipe (21), and the partition (23) is provided with diversion holes (231) of different sizes; The upper end surface of the heat dissipation core (1) is formed with a water flow distribution cavity (11), an adjustment plate (111) is floatingly provided in the water flow distribution cavity (11), the adjustment plate (111) is provided with small holes, and the adjustment plate (111) cooperates with the diversion holes (231) of different sizes to perform adaptive tilt adjustment and assist in distributing the water flow; The first flow-guiding curved surface (221) and the second flow-guiding curved surface (222) gradually incline from top to bottom toward the rear side of the upper water chamber (2); The first flow-guiding curved surface (221) and the second flow-guiding curved surface (222) are both gradually inclined from the dividing line (223) to the side away from the dividing line (223) towards the rear side of the upper water chamber (2); The partition plate (23) is a concave curved surface and the lowest point is located below the water inlet pipe (21); The diversion hole (231) gradually increases in size from front to back, and the diversion hole (231) gradually increases in size from the dividing line (223) to both sides; Springs (112) are provided between the front and rear sides of the bottom of the regulating plate (111) and the bottom of the water flow distribution chamber (11), and a gap is left between the side of the regulating plate (111) and the side wall of the water flow distribution chamber (11).

2. The heat exchanger with a flow splitting structure according to claim 1, characterized in that: The dividing line (223) divides the cross section of the water inlet pipe (21) into two parts, the areas of which are S1 and S2 respectively, wherein S1 is close to the first flow guiding curved surface (221), and S2 is close to the second flow guiding curved surface (222); The distance between an edge of the first flow-guiding curved surface (221) away from the dividing line (223) and the dividing line (223) is a, and the distance between an edge of the second flow-guiding curved surface (222) away from the dividing line (223) and the dividing line (223) is b; The distance between one end of the upper water chamber (2) close to the first flow guiding curved surface (221) and the dividing line (223) is m, and the distance between one end of the upper water chamber (2) close to the second flow guiding curved surface (222) and the dividing line (223) is n; Among them, S1:S2=a:b=m:n.

3. The heat exchanger with a flow splitting structure according to claim 1, characterized in that: A flange plate (232) is provided on the side of the flow diversion hole (231) close to the dividing line (223), and the flange plate (232) is inclined toward the side pointing toward the dividing line (223) and points toward the junction of the first flow guide curved surface (221) and the second flow guide curved surface (222) on the upper end surface of the guide plate (22).

4. The heat exchanger with a flow splitting structure according to claim 1, characterized in that: A gap is left between the upper end surface of the regulating plate (111) and the upper end surface of the water flow distribution chamber (11); the depth h of the water flow distribution chamber (11) is 10 cm-20 cm.

5. The heat exchanger with a flow splitting structure according to claim 1, characterized in that: The heat dissipation core (1) comprises heat dissipation tubes (12) arranged in an array at intervals and heat dissipation fins (13) arranged outside the heat dissipation tubes (12); the top ends of the heat dissipation tubes (12) are connected to the water flow distribution chamber (11); the upper end surfaces of the heat dissipation tubes (12) are flush with the bottom surfaces of the water flow distribution chamber (11); and the bottom ends of the heat dissipation tubes (12) are connected to the lower water chamber (3).

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