Heat exchanger for cabinet

Abstract

The invention relates to a heat exchanger for a cabinet. The heat exchanger comprises a cabinet body; the heat dissipation assembly comprises a core body fixed at the top of the cabinet body, air channels penetrating through the core body and arranged at intervals, fins formed between the adjacent air channels, and a main flow channel penetrating through the fins; the air cooling assembly is mounted at the top of the core body, and the air cooling assembly is used for drawing air in the cabinet body to enable the air to pass through the air duct; and the flow guide assembly is installed at the bottom of the cabinet body and used for guiding air in the cabinet body upwards into the air duct. According to the heat exchanger for the machine cabinet, the heat dissipation assembly and the air cooling assembly are arranged at the top of the cabinet body, when the air cooling assembly sucks hot air in the cabinet body outwards, the hot air penetrates through the heat dissipation assembly to complete heat exchange, meanwhile, the flow guide assembly is arranged in the cabinet body, and therefore the heat dissipation effect is improved; and hot air in the cabinet body is gradually guided upwards, so that the internal heat dissipation efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of heat sink technology, specifically relating to a heat exchanger for server racks. Background Technology

[0002] Telecommunications organizations typically refer to organizations or institutions related to communication technologies, equipment, and services, and may also include data centers, energy storage systems, frequency converters, or inverters. These organizations can include telecommunications operators, communication equipment manufacturers, communication technology research and development institutions, and communication service providers. During use, the internal electrical components of a communication cabinet generate heat, causing the cabinet's internal temperature to rise. Without adequate heat dissipation measures, this can shorten the lifespan of the communication equipment.

[0003] In existing technologies, fans are typically installed at the top of the server rack. The rotation of the fans accelerates the flow of air between the inside and outside of the rack, thereby transferring heat from inside the rack to the outside. However, current cooling methods rely solely on the rotation of fans to accelerate airflow, resulting in low cooling efficiency and an inability to effectively transfer heat from inside the rack, thus affecting the lifespan of the equipment inside. Summary of the Invention

[0004] This invention provides a heat exchanger for server racks, which solves the problem of low heat dissipation efficiency in the prior art that relies solely on the rotation of a fan for heat dissipation.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a heat exchanger for server racks, comprising: Cabinet; A heat dissipation assembly, comprising a core fixed to the top of the cabinet, air ducts passing through the core and spaced apart, fins formed between adjacent air ducts, and a main channel passing through the fins, wherein coolant flows through the main channel. An air-cooled assembly is installed on top of the core and is used to draw air from the cabinet and pass it through the air duct. An airflow guiding component is installed at the bottom of the cabinet and is used to guide the air inside the cabinet upward into the air duct. A filter assembly for filtering coolant, the filter assembly including a transition tube, an extension tube integrally connected to the top of the transition tube and inclined upward, a filter screen disposed in the extension tube, and a clamping mechanism detachably installed at one end of the extension tube for continuously pressing against the filter screen.

[0006] Optimally, the flow guiding assembly includes a lower flow guiding plate fixed to the bottom of the cabinet and an upper flow guiding plate fixed between the cabinet and the lower flow guiding plate.

[0007] Optimally, the heat dissipation assembly further includes a first sealing plate and a second sealing plate fixed on both sides of the core, a liquid inlet cavity formed between the first sealing plate and the core, a liquid outlet cavity formed between the second sealing plate and the core, a first baffle fixed on both sides of the first sealing plate for blocking the liquid inlet cavity, a second baffle fixed on both sides of the second sealing plate for blocking the liquid outlet cavity, a liquid inlet pipe installed at the bottom of the first sealing plate and communicating with the liquid inlet cavity, and a liquid outlet pipe installed at the bottom of the second sealing plate and communicating with the liquid outlet cavity, wherein the liquid inlet cavity and the liquid outlet cavity are connected through the main channel.

[0008] Optimally, the heat dissipation assembly further includes a baffle plate that is inclinedly fixed in the liquid inlet chamber, a through hole through the baffle plate, and a side flow channel formed between the baffle plate and the first baffle plate.

[0009] Optimally, the lower guide plate includes a third mounting plate fixed to the inner side wall of the cabinet, a second support plate integrally connected to the bottom of the third mounting plate and inclined, and a first support plate integrally connected to the bottom of the second support plate and inclined.

[0010] Optimally, the upper guide plate includes a first mounting plate fixed to the bottom of the cabinet, a first folding plate integrally connected to the top of the first mounting plate and inclined, a second folding plate integrally connected to the top of the first folding plate and inclined, a third folding plate integrally connected to the top of the second folding plate and inclined, and a second mounting plate integrally connected to the top of the third folding plate and fixed to the third mounting plate. The third folding plate abuts against the second support plate, and the second folding plate abuts against the first support plate.

[0011] Optimally, the filter assembly also includes a baffle integrally connected to the transition tube and inclined, a water flow hole penetrating the baffle, and a first slot formed on one side of the baffle, with the filter screen abutting in the first slot.

[0012] Optimally, the clamping mechanism includes an inner locking platform detachably installed at one end of the extension tube, a stop plate integrally connected to one side of the inner locking platform and abutting against the extension tube, a second slot formed inside the inner locking platform, a spring slot formed inside the inner locking platform and communicating with the second slot, and a spring disposed in the spring slot, wherein the filter screen abuts against the second slot and against the spring.

[0013] Optimally, the filter screen includes a filter cylinder that abuts against the first slot, a buffer plate integrally connected to one side of the filter cylinder and abutting against the second slot, a first filter hole circumferentially disposed on the outer circumferential surface of the filter cylinder, and a second filter hole circumferentially disposed on the buffer plate.

[0014] Optimally, the clamping mechanism further includes an outer locking platform integrally connected to one side of the abutment plate, a drainage cavity formed on one side of the inner locking platform and connected to the extension tube, a guide portion inclinedly arranged on both sides of the drainage cavity, a locking groove penetrating the outer locking platform and connected to the drainage cavity, and a locking bolt disposed in the locking groove.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: This invention relates to a heat exchanger for server racks. By incorporating a heat dissipation component and an air-cooling component at the top of the rack, the air-cooling component draws hot air from inside the rack, which then passes through the heat dissipation component to complete heat exchange. Simultaneously, a flow-guiding component inside the rack gradually guides the hot air upwards, improving internal heat dissipation efficiency and extending the lifespan of the equipment inside the rack. Furthermore, a filtration component filters the circulating coolant, preventing impurities in the water from clogging the flow channels, thereby improving heat dissipation efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a schematic diagram showing the lower guide plate and the upper guide plate after they are fixed together according to the present invention; Figure 4 This is a schematic diagram of the upper guide plate of the present invention; Figure 5 This is a schematic diagram of the structure of the lower guide plate of the present invention; Figure 6 This is a schematic diagram of the heat sink of the present invention; Figure 7 This is a cross-sectional view of the heat sink of the present invention; Figure 8 This is a partial structural schematic diagram of the heat sink of the present invention; Figure 9 This is a partial structural diagram of the present invention; Figure 10 This is a partial structural diagram of the present invention; Figure 11 This is a cross-sectional view of the transition cover of the present invention; Figure 12 This is a cross-sectional view of the filtering component of the present invention; Figure 13 This is a partial enlarged view of the filtering component of the present invention; Explanation of reference numerals in the attached figures: 1. Cabinet; 2. First mounting plate; 3. First folding plate; 4. Second folding plate; 5. Third folding plate; 6. Second mounting plate; 7. First groove; 8. First support plate; 9. Second support plate; 10. Second groove; 11. Third mounting plate; 12. Core; 13. Air duct; 14. Fin; 15. Sealing plate; 16. Baffle; 17. Main flow channel; 18. Liquid inlet pipe; 19. Liquid inlet chamber; 20. Liquid outlet pipe; 21. Liquid outlet chamber; 22. Baffle plate; 23. Through hole; 24. Side flow channel; 25. Upper partition plate; 26. Lower partition plate; 27. Air guide seat; 28. Mounting groove 29. Installation section; 30. Flow guide section; 31. Extension section; 32. Fan base plate; 33. Column; 34. Fan mounting plate; 35. Centrifugal fan; 36. Support bar; 37. First handle; 38. Second handle; 39. Transition pipe; 40. Extension pipe; 41. Partition plate; 42. First slot; 43. Through hole; 44. Support plate; 45. Inner locking platform; 46. Outer locking platform; 47. Second slot; 48. Spring groove; 49. Spring; 50. Drainage chamber; 51. Drainage section; 52. Locking groove; 53. Locking bolt; 54. Filter cartridge; 55. Buffer plate. Detailed Implementation

[0017] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0018] like Figure 1 , 2 The diagram shows a schematic of the heat exchanger for the server rack of this invention. It includes a cabinet 1, a heat dissipation assembly, an air-cooling assembly, a lower guide plate, and an upper guide plate. The cabinet 1 is a semi-enclosed enclosure that houses heat-generating equipment such as servers, communication devices, and power electronic components. A cover plate is installed on its open side by screws to seal the cabinet 1. The cover plate can be removed for maintenance. The heat dissipation assembly is installed on the top of the cabinet 1, and the air-cooling assembly is installed on top of the heat dissipation assembly. Through the cooperation of the heat dissipation assembly and the air-cooling assembly, hot air inside the cabinet 1 is drawn outward (an air inlet duct is provided on the cover plate to facilitate airflow). The lower and upper guide plates are installed on the inner bottom of the cabinet 1 to guide the hot air inside the cabinet 1 upward to the heat dissipation assembly.

[0019] like Figure 5 The diagram shows the structure of the lower guide plate. The lower guide plate includes a first support plate 8, a second support plate 9, a second groove 10, a third mounting plate 11, and a support strip 36. The third mounting plate 11 is fixed to the inner wall of the cabinet 1 by bolts and nuts. (Specifically, the top of the third mounting plate 11 has spaced mounting grooves. During actual installation, the third mounting plate 11 is pressed against the inner wall of the cabinet 1. The side wall of the cabinet 1 has circular mounting holes corresponding to the mounting grooves. Fastening bolts are passed through the mounting grooves and circular mounting holes in sequence, and fastening nuts are used on the other side to complete the fixing of the third mounting plate 11.) Figure 5As shown, the mounting groove on the third mounting plate 11 is strip-shaped rather than circular, which makes installation more convenient and avoids the problem of misaligned holes that cannot be assembled due to errors in the groove position.

[0020] The second support plate 9 is integrally connected to the bottom of the third mounting plate 11 and is inclined, with an obtuse angle between the second support plate 9 and the third mounting plate 11. The first support plate 8 is integrally connected to the bottom of the second support plate 9 and is inclined, with an obtuse angle between the second support plate 9 and the first support plate 8. The second support plate 9 is used to support the third folding plate 5, and the first support plate 8 is used to support the second folding plate 4.

[0021] The top of the support bar 36 is fixed to the bottom of the second tray 9 and the first tray 8 by welding, and the bottom of the support bar 36 is fixed to the inner bottom of the cabinet 1 by welding. The support bar 36 supports the second tray 9 and the first tray 8, improving the load-bearing strength of the second tray 9 and the first tray 8. Figure 5 As shown, the first tray 8 has a second groove 10 on both sides. The opening of the second groove 10 is away from the second tray 9. The second groove 10 cooperates with the first groove 7 to avoid the liquid inlet pipe 18 and liquid outlet pipe 20 of the heat dissipation component.

[0022] like Figure 4 The diagram shows the structure of the lower guide plate, which includes a first mounting plate 2, a first folding plate 3, a second folding plate 4, a third folding plate 5, a second mounting plate 6, and a first groove 7. The first mounting plate 2 has spaced mounting grooves, and the bottom of the cabinet 1 has circular fixing holes corresponding to the mounting groove positions. During actual installation, the first mounting plate 2 is placed on the inner bottom of the cabinet 1, and the fastening bolts are passed through the mounting grooves and the circular fixing holes in sequence. A fastening nut is then used on the other side to complete the fixation of the first mounting plate 2. Figure 4 As shown, the mounting groove on the first mounting plate 2 is strip-shaped rather than circular, which makes installation more convenient and avoids the problem of misaligned holes and inability to assemble due to errors in the groove position.

[0023] The first folding plate 3 is integrally connected to the top of the first mounting plate 2 and extends obliquely upwards, with an obtuse angle between the first folding plate 3 and the first mounting plate 2. The second folding plate 4 is integrally connected to the top of the first folding plate 3 and extends obliquely upwards, with an obtuse angle between the second folding plate 4 and the first folding plate 3. The third folding plate 5 is integrally connected to the top of the second folding plate 4 and extends obliquely upwards, with an obtuse angle between the third folding plate 5 and the second folding plate 4. Figure 4 As shown, the first folding plate 3, the second folding plate 4, and the third folding plate 5 gradually tilt upwards. When the air-cooling component draws air, the hot air inside the cabinet 1 is gradually guided upwards by the folding plates, thereby improving the internal heat dissipation efficiency.

[0024] The second mounting plate 6 is integrally connected to the top of the third folding plate 5 and fixed to the inner side of the third mounting plate 11. For example... Figure 4 As shown, the second folding plate 4 has a first groove 7 on both sides, and the opening of the first groove 7 is far away from the first folding plate 3. The first groove 7 cooperates with the second groove 10 to avoid the liquid inlet pipe 18 and liquid outlet pipe 20 of the heat dissipation component.

[0025] like Figure 3 The diagram shows the structure after the lower and upper guide plates are fixed together. As can be seen, the first groove 7 and the second groove 10 form a hollow slot to avoid the liquid inlet pipe 18 and liquid outlet pipe 20 of the heat dissipation assembly. The third folding plate 5 abuts against the upper surface of the second support plate 9, and the second folding plate 4 abuts against the upper surface of the first support plate 8. The lower guide plate's support prevents the upper guide plate from deforming after prolonged flow.

[0026] like Figure 1 As shown, the first handle 37 is fixed at intervals on the side of the upper guide plate away from the lower guide plate by screws. During maintenance, the bolts on the first mounting plate 2 and the second mounting plate 6 are unscrewed, and the maintenance personnel can pull the first handle 37 outward to remove the upper guide plate for easy maintenance.

[0027] The heat dissipation component is fixed to the top of cabinet 1 to dissipate the hot air drawn out by the air-cooling component in a timely manner, thereby improving the heat dissipation efficiency of cabinet 1. Figure 6 As shown, the heat dissipation assembly includes a core 12, an air duct 13, fins 14, a sealing plate 15, a baffle 16, a main flow channel 17, an inlet pipe 18, an inlet chamber 19, an outlet pipe 20, an outlet chamber 21, a baffle plate 22, a through hole 23, and a side flow channel 24. Angle steel is welded to the front and rear sides of the core 12. A core slot is provided on the top of the cabinet 1, and the core 12 is placed in the core slot on the top of the cabinet 1. The angle steel on the front and rear sides of the core 12 rests on the top edge of the cabinet 1, and the angle steel is fixed to the top of the cabinet 1 by bolts, thus completing the fixed installation of the core 12.

[0028] like Figure 6-8 As shown, the air ducts 13 extend vertically through the core 12 and are spaced apart. When the air-cooling component is venting, the hot air inside the cabinet 1 flows upward, passes through the air ducts 13 of the core 12, and is then discharged upward. Fins 14 are formed between two adjacent air ducts 13. The main flow channel 17 extends horizontally through the fins 14 and is filled with coolant (such as cooling water). The hot air inside the cabinet 1 flows upward, passes through the air ducts 13 of the core 12, and is then discharged upward. When the hot air passes through the air ducts 13, it comes into contact with the fins 14 on both sides and undergoes heat exchange, thus completing the cooling of the air.

[0029] There are two sealing plates 15, which are fixed to both sides of the core 12, as follows: Figure 6, 7 As shown, the core 12 has a rectangular structure with two long sides and two sets of short sides arranged opposite to each other. Angle steel is fixed on the two sets of long sides of the core 12, and sealing plates 15 are fixed on the two sets of short sides of the core 12 (the sealing plate 15 fixed on the left side of the core 12 is the first sealing plate, and the sealing plate 15 fixed on the right side of the core 12 is the second sealing plate).

[0030] The sealing plate 15 is in the shape of an "[", with its opening facing the core 12. Therefore, a liquid inlet chamber 19 is formed between the core 12 and the first sealing plate, and a liquid outlet chamber 21 is formed between the core 12 and the second sealing plate. The liquid inlet chamber 19 and the liquid outlet chamber 21 are connected by a main flow channel 17 to ensure the circulation of coolant. Baffles 16 are fixed to both sides of the first and second sealing plates to block the liquid inlet chamber 19 and the liquid outlet chamber 21 (the baffles fixed to both sides of the first sealing plate are the first baffles, and the baffles fixed to both sides of the second sealing plate are the second baffles).

[0031] The inlet pipe 18 is connected to the bottom of the first sealing plate, and the outlet pipe 20 is connected to the bottom of the second sealing plate. Coolant enters through the inlet pipe 18, flows through the inlet chamber 19 and the main channel 17 to complete heat exchange, and then flows out through the outlet chamber 21 and then out through the outlet pipe 20.

[0032] like Figure 8 As shown, the baffle plate 22 is fixed at an angle inside the liquid inlet chamber 19, and the length of the baffle plate 22 is less than the width of the core 12. Therefore, a side flow channel 24 is formed between the baffle plate 22 and the first baffle. The through holes 23 penetrate the baffle plate 22 and are spaced apart. After the coolant enters the liquid inlet chamber 19 from the liquid inlet pipe 18, a portion of the coolant will flow to the main flow channel 17 through the through holes 23. Most of the coolant will flow to one side under the obstruction of the baffle plate 22, flowing from the side flow channel 24 to the main flow channel 17, and finally discharged from the other side of the main flow channel 17 into the liquid outlet chamber 21.

[0033] By setting a baffle 22 in the liquid inlet chamber 19 to prevent the coolant from flowing directly to the nearest main channel 17, the water flow is forced to diffuse and be evenly distributed to the other main channels 17 of the core 12, thereby achieving balanced flow of coolant in all parallel main channels 17 and improving heat dissipation efficiency.

[0034] like Figure 9 , 10As shown, the air-cooled assembly includes an air guide seat 27, a mounting groove 28, a transition cover, a fan base plate 32, columns 33, a fan mounting plate 34, and a centrifugal fan 35. The air guide seat 27 is fixed to the top of the angle steel on both sides of the core 12 by screws. The interior of the air guide seat 27 is hollow to facilitate air intake. The fan base plate 32 is fixed to the top of the air guide seat 27 by screws. There are four columns 33, which are fixed to the top of the fan base plate 32 by screws and are distributed at the four corners of the fan base plate 32.

[0035] The fan mounting plate 34 is fixed to the top of the column 33 by screws. The centrifugal fan 35 is mounted on the fan mounting plate 34 and is connected to the air guide shroud through a transition cover. When the centrifugal fan 35 rotates to exhaust air, the hot air inside the cabinet 1 flows upward through the air duct 13 of the core 12, flows through the air guide shroud and the transition cover, and is then discharged from the top.

[0036] like Figure 10 , 11 As shown, the transition cover includes a mounting part 29, a guide part 30, and an extension part 31. The top of the guide cover has a mounting groove 28. The mounting part 29 is fixed to the bottom of the mounting groove 28 by screws. The guide part 30 is integrally connected to the top of the mounting part 29 and extends upward through the mounting groove 28. The guide part 30 is arc-shaped with its center facing outwards. The extension part 31 is integrally connected to the top of the guide part 30. After the centrifugal fan 35 is installed, its bottom fits onto the extension part 31 of the transition cover, preventing airflow loss during exhaust and improving exhaust efficiency. Furthermore, the arc-shaped guide part 30 can concentrate airflow from the center and direct it to the centrifugal fan 35, improving heat dissipation efficiency and preventing airflow from dissipating from the surrounding areas.

[0037] like Figure 10 As shown, the lower partition 26 is fixedly spaced inside the air guide seat 27, and the lower partition 26 is fixedly connected to the side wall of the air guide seat 27 by welding. To improve the structural strength of the lower partition 26, inclined reinforcing ribs are welded between the lower partition 26 and the side wall of the air guide seat 27. The upper partition 25 is fixedly spaced on the top of the air guide seat 27 and is used to separate the centrifugal fan 35 at the top of the air guide seat 27. The upper partition 25 is located directly above the lower partition 26. By setting the partition, air interference between the fans can be prevented, thereby improving the efficiency of exhaust and heat dissipation.

[0038] like Figure 2 As shown, the second handle 38 is fixed to the bottom of the cabinet 1 at intervals by screws. When maintenance is required, the bolts on the air guide seat 27 can be removed to pull the cabinet 1 out for easy maintenance.

[0039] like Figure 12 , 13The diagram shows the structure of the filter assembly, which is used to filter the coolant to remove impurities adhering to the coolant during its flow, preventing blockage of the flow channels. The filter assembly includes a transition pipe 39, an extension pipe 40, a baffle plate 41, a first slot 42, a water flow hole 43, a stop plate 44, an inner locking platform 45, an outer locking platform 46, a second slot 47, a spring slot 48, a spring 49, a drainage chamber 50, a drainage section 51, a locking groove 52, a locking bolt 53, a filter cylinder 54, and a buffer plate 55. The transition pipe 39 is horizontally arranged, and its two ends are connected to the inlet pipe and the outlet pipe through flanges, respectively, and is driven by the pump to flow the coolant.

[0040] The extension tube 40 is integrally connected to the top of the transition tube 39 and is inclined upwards, such as... Figure 12 As shown, the coolant to be filtered flows from right to left, then enters the extension pipe 40 upwards for filtration, and finally flows out from the left side, completing the filtration process. The baffle 41 is integrally connected to the inside of the transition pipe 39 and is inclined. The water flow hole 43 passes through the baffle 41 and connects the transition pipe 39 and the extension pipe 40. The coolant to be filtered in the transition pipe 39 flows from the water flow hole 43 into the extension pipe 40 for filtration.

[0041] The first slot 42 is located on the side of the extension tube 40 near the water flow hole 43, and the diameter of the first slot 42 is larger than the diameter of the water flow hole 43, thus blocking and limiting the insertion of the filter cartridge 54 (e.g., Figure 12 As shown, the diameter of the filter cartridge 54 is equal to the diameter of the first slot 42. One side of the filter cartridge 54 with its opening rests against the first slot 42. Since the diameter of the first slot 42 is larger than the diameter of the water flow hole 43, a shoulder structure is formed between the first slot 42 and the water flow hole 43 to block the inserted filter cartridge 54.

[0042] The inner diameter of the extension tube 40 is larger than the outer diameter of the filter cartridge 54, ensuring that the filtered liquid can flow normally to the other side of the transition tube 39.

[0043] The inner locking platform 45 is integrally connected to one side of the abutment plate 44, and the outer locking platform 46 is integrally connected to the other side of the abutment plate 44. The outer circumferential surface of the inner locking platform 45 is provided with external threads, and the inner sidewall of the extension tube 40 away from the water flow hole 43 is provided with internal threads. The inner locking platform 45 is screwed and locked into the extension tube 40 by the threaded engagement, thus blocking the inserted filter tube. After the inner locking platform 45 is screwed in, the abutment plate 44 will abut against the side of the extension tube 40 away from the water flow hole 43. Liquid leakage is prevented by the threaded engagement and the contact between the abutment plate 44 and the extension tube 40.

[0044] The inner locking platform 45 has a second slot 47 on its inner side for blocking and limiting the insertion of the filter cartridge 54. A spring groove 48 is located on the inner side of the inner locking platform 45 and communicates with the second slot 47. A spring 49 is disposed within the spring groove 48. When the inner locking platform 45 is locked, the filter cartridge 54 gradually compresses the spring 49 within the spring groove 48 until the spring 49 deforms. Under the counterforce of the spring 49, it continuously presses against the filter cartridge 54, thereby continuously pressing the filter cartridge 54 against the first slot 42, ensuring that the filter cartridge 54 and the first slot 42 will not loosen after prolonged filtration.

[0045] Because when the liquid enters the filter cartridge 54 from the transition pipe 39, the liquid flows upwards at an angle, while the filter cartridge 54 is installed downwards at an angle; the two directions are exactly opposite. If a spring-loaded locking structure is not provided, relying solely on the threaded locking of the inner locking plate 45, the threaded connection will loosen under the prolonged reverse impact of the liquid. This will lead to loosening between the filter cartridge 54 and the first retaining groove 42, affecting the filtration effect.

[0046] The outer circumference of the filter cylinder 54 is provided with a first filter hole to isolate the medium in the liquid within the filter cylinder 54. Through the upwardly inclined extension tube 40, during filtration, under the influence of gravity, most of the filtered liquid will pass through the first filter hole on the side of the filter cylinder 54 closest to the water flow hole 43. Only a small portion of the liquid will impact the buffer plate 55 on one side of the filter cylinder 54. Therefore, the upwardly inclined extension tube 40 design reduces the flow rate of the impacting liquid, thereby preventing loosening of the threaded connection of the inner locking platform 45 and preventing loosening between the filter cylinder 54 and the first retaining groove 42, which would affect the filtration effect.

[0047] The buffer plate 55 is integrally connected to the side of the filter cylinder 54 away from the water flow hole 43. A second filter hole is provided around the buffer plate 55. During filtration, under the influence of gravity, most of the filtered liquid will pass through the first filter hole on the side of the filter cylinder 54 closest to the water flow hole 43. Only a small portion of the liquid will tilt upwards and impact the buffer plate 55 on one side of the filter cylinder 54. By providing the second filter hole on the buffer plate 55, a portion of this impacted liquid will still flow through the second filter hole into the drainage cavity 50 of the inner locking platform 45, further reducing the impact on the buffer plate 55. This prevents loosening of the threaded connection of the inner locking platform 45 and avoids loosening between the filter cylinder 54 and the first slot 42, which would affect the filtration effect. The drainage chamber 50 is located inside the inner locking platform 45 and communicates with the interior of the extension tube 40. The drainage chamber 50 is used to accommodate a portion of the water flow after passing through the buffer plate 55. The side wall of the drainage chamber 50 is provided with an inclined drainage section 51. A portion of the water flow passing through the second filter hole of the buffer plate 55 will impact the inner side of the inner locking platform 45 in a vertical direction, and another portion will impact the inclined drainage section 51. The inclined drainage section 51 divides the impact force of the water flow, preventing all the water flow from impacting the inner side of the inner locking platform 45 in a vertical direction, and preventing the threaded connection of the inner locking platform 45 from loosening.

[0048] At the same time, under the action of gravity, the inclined drainage part 51 will guide the water flow that enters the drainage cavity 50 back into the filter cylinder 54, which has the function of guiding the water flow back.

[0049] The locking groove 52 passes through the outer locking platform 46 and communicates with the drainage cavity 50. The inner wall of the locking groove 52 is provided with internal threads, and the outer wall of the locking bolt 53 is provided with external threads. The locking bolt 53 is screwed into the locking groove 52 by screwing. After long-term filtration, most of the filter residue will adhere to the inner wall of the filter cylinder 54 and the buffer plate 55. When it is necessary to clean the floating residue on the inner wall of the buffer plate 55 and the filter cylinder 54, the connecting flanges on both sides of the transition pipe 39 are removed, the locking bolt 53 is opened, and water is flushed in the reverse direction to flush down the floating residue and discharge it from one side of the transition pipe 39 through the water flow hole 43. It is not necessary to open the inner locking platform 45 for cleaning, saving subsequent assembly steps.

[0050] The heat exchanger for server racks of this invention features a heat dissipation component and an air-cooling component mounted on the top of the rack 1. The air-cooling component draws hot air from inside the rack 1, and heat exchange is completed as the hot air passes through the heat dissipation component. Simultaneously, a flow guiding component is installed inside the rack 1 to gradually guide the hot air upwards, improving internal heat dissipation efficiency. Furthermore, a filtration component filters the circulating coolant, preventing impurities in the water from clogging the flow channels, thereby improving heat dissipation efficiency.

[0051] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A heat exchanger for cabinets, characterized in that, It comprises: a cabinet body (1); a heat dissipation assembly comprising a core body (12) fixed on the top of the cabinet body (1), air ducts (13) penetrating through the core body (12) and arranged at intervals, fins (14) formed between adjacent air ducts (13), and a main flow channel (17) penetrating through the fins (14) and containing cooling liquid; an air cooling assembly installed on the top of the core body (12) and used for pumping air in the cabinet body (1) to pass through the air ducts (13); a flow guide assembly installed at the bottom of the cabinet body (1) and used for guiding air in the cabinet body (1) upward into the air ducts (13); a filter assembly used for filtering cooling liquid, which comprises a transition pipe (39), an extension pipe (40) integrally connected to the top of the transition pipe (39) and arranged obliquely upward, a filter screen arranged in the extension pipe (40), and a pressing mechanism detachably installed at one end of the extension pipe (40) and used for continuously pressing the filter screen.

2. A heat exchanger for cabinets according to claim 1, characterized in that: The flow guide assembly comprises a lower flow guide plate fixed at the bottom of the cabinet body (1) and an upper flow guide plate fixed between the cabinet body (1) and the lower flow guide plate.

3. The heat exchanger for a cabinet according to claim 1, characterized in that: The heat dissipation assembly further comprises a first sealing plate and a second sealing plate fixed on both sides of the core body (12), a liquid inlet cavity (19) formed between the first sealing plate and the core body (12), a liquid outlet cavity (21) formed between the second sealing plate and the core body (12), a first baffle plate fixed on both sides of the first sealing plate and used for sealing the liquid inlet cavity (19), a second baffle plate fixed on both sides of the second sealing plate and used for sealing the liquid outlet cavity (21), a liquid inlet pipe (18) installed at the bottom of the first sealing plate and communicating with the liquid inlet cavity (19), and a liquid outlet pipe (20) installed at the bottom of the second sealing plate and communicating with the liquid outlet cavity (21), wherein the liquid inlet cavity (19) and the liquid outlet cavity (21) communicate with each other through the main flow channel (17).

4. A heat exchanger for cabinets according to claim 3, characterized in that: The heat dissipation assembly further comprises a flow blocking plate (22) obliquely fixed in the liquid inlet cavity (19), a through hole (23) penetrating through the flow blocking plate (22), and a side flow channel (24) formed between the flow blocking plate (22) and the first baffle plate.

5. A heat exchanger for cabinets according to claim 2, characterized in that: The lower flow guide plate comprises a third mounting plate (11) fixed to the inner side wall of the cabinet body (1), a second supporting plate (9) integrally connected to the bottom of the third mounting plate (11) and arranged obliquely, and a first supporting plate (8) integrally connected to the bottom of the second supporting plate (9) and arranged obliquely.

6. A heat exchanger for cabinets according to claim 5, characterized in that: The upper guide plate comprises a first mounting plate (2) fixed at the bottom of the cabinet body (1), a first folding plate (3) integrally connected at the top of the first mounting plate (2) and arranged obliquely, a second folding plate (4) integrally connected at the top of the first folding plate (3) and arranged obliquely, a third folding plate (5) integrally connected at the top of the second folding plate (4) and arranged obliquely, and a second mounting plate (6) integrally connected at the top of the third folding plate (5) and fixed with the third mounting plate (11), wherein the third folding plate (5) abuts against the second supporting plate (9), and the second folding plate (4) abuts against the first supporting plate (8).

7. A heat exchanger for cabinets as claimed in claim 1, wherein: The filter assembly further comprises a partition plate (41) integrally connected in the transition pipe (39) and arranged obliquely, a water flow hole (43) penetrating through the partition plate (41), and a first clamping groove (42) formed on one side of the partition plate (41), wherein the filter screen abuts in the first clamping groove (42).

8. A heat exchanger for cabinets according to claim 7, characterized in that: The abutting mechanism comprises an inner locking table (45) detachably mounted at one end of the extension pipe (40), an abutting plate (44) integrally connected at one side of the inner locking table (45) and abutting against the extension pipe (40), a second clamping groove (47) formed on the inner side of the inner locking table (45), a spring groove (48) formed on the inner side of the inner locking table (45) and communicating with the second clamping groove (47), and a spring (49) arranged in the spring groove (48), wherein the filter screen abuts in the second clamping groove (47) and abuts against the spring (49).

9. A heat exchanger for cabinets according to claim 8, characterized in that: The filter screen comprises a filter cylinder (54) abutting against the first clamping groove (42), a buffer plate (55) integrally connected at one side of the filter cylinder (54) and abutting against the second clamping groove (47), a first filter hole annularly arranged on the outer circumferential surface of the filter cylinder (54), and a second filter hole annularly arranged on the buffer plate (55).

10. A heat exchanger for cabinets according to claim 9, characterized in that: The abutting mechanism further comprises an outer locking table (46) integrally connected at one side of the abutting plate (44), a drainage cavity (50) formed on one side of the inner locking table (45) and communicating with the extension pipe (40), a drainage portion (51) obliquely arranged on both sides of the drainage cavity (50), a locking groove (52) penetrating through the outer locking table (46) and communicating with the drainage cavity (50), and a locking bolt (53) arranged in the locking groove (52).

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