A multi-flow combined air cooler

Abstract

The present application discloses a multi-flow combined air cooler, which relates to the technical field of air coolers, including a chassis with a receiving cavity; a fan installed on one side of the chassis for providing heat exchange airflow, and a plurality of air inlets and air outlets are arranged in the chassis, wherein the air inlet is connected to the fan, and the air outlet is connected to the outside; a first tube layer is arranged in the receiving cavity close to the fan, and the first tube layer forms a first heat exchange space; a second tube layer is arranged in the receiving cavity away from the fan, and the second tube layer forms a second heat exchange space; wherein the first tube layer and the second tube layer are interconnected and have heat exchange medium input and output, and the first tube layer and the second tube layer are arranged alternately. By adopting the above technical solution, the purpose of improving the heat exchange efficiency of the air cooler is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of air coolers, and in particular to a multi-flow combined air cooler. Background Art

[0002] Air cooler is the abbreviation of air cooler. It is the most widely used heat exchange equipment for condensation and cooling in petrochemical and oil and gas processing production. Air cooler is generally composed of tube bundle, tube box, fan, shutter and frame. Air cooler uses air as cooling medium and transfers the heat of high-temperature fluid (such as water, oil, gas, etc.) to flowing air through heat exchanger, thereby reducing the temperature of fluid. Air cooler is widely used in petrochemical, electric power, steel, machinery manufacturing and other industries. In the field of petrochemical, air cooler is used to cool high-temperature fluid in equipment such as reactors and heat exchangers; in the power industry, air cooler is used to cool the cooling water of generator sets and transformers; in the steel industry, air cooler is used to cool the cooling water of rolling equipment and heating furnaces.

[0003] The related technology discloses an annular air cooler, including an annular outer shell, both left and right ends of the annular outer shell are fixedly connected to end covers, guide grooves are provided on the inner sides of both left and right ends of the annular outer shell, guide blocks are slidably connected in the guide grooves, a tube sheet is fixedly connected between the guide block and another guide block, the tube sheet is provided with perforations, a tube bundle is fixedly connected between the tube sheet and the corresponding perforations on the other tube sheet, equidistantly distributed heat sinks are fixedly connected to the outside of the tube bundle, equidistantly distributed air inlets are provided at the lower end of the annular outer shell, an axial flow fan is fixedly connected to the outer side of the lower end of the air inlet, and an air outlet slot is provided at the upper end of the annular outer shell.

[0004] Although the related technology has improved the heat exchange efficiency to a certain extent, the flow direction of the cooling fluid in the tube bundle is limited due to the single shape of the tube bundle. The single flow direction leads to poor cooling effect in the area where the tube bundle is far away from the fan, while the cooling effect of the tube bundle close to the fan is not fully utilized, which in turn affects the overall cooling effect and cooling efficiency. Summary of the invention

[0005] The object of the present invention is to provide a multi-flow combined air cooler to solve the technical problem.

[0006] The present application provides a multi-flow combined air cooler comprising:

[0007] The chassis is provided with a receiving cavity;

[0008] A fan, installed on one side of the chassis, for providing heat exchange airflow, wherein the chassis is provided with a plurality of air inlets and air outlets, wherein the air inlets are connected to the fan, and the air outlets are connected to the outside;

[0009] A first tube layer is arranged in the accommodating cavity close to the fan, and the first tube layer forms a first heat exchange space;

[0010] A second tube layer is arranged in the accommodating cavity away from the fan, and the second tube layer forms a second heat exchange space;

[0011] The first tube layer and the second tube layer are interconnected and have heat exchange medium input and output, and the first tube layer and the second tube layer are staggered.

[0012] By adopting the above technical solution, the first tube layer and the second tube layer are staggered, so that the heat exchange medium can flow in multiple flow paths, avoiding the limitation of heat exchange effect by a single flow direction. The first tube layer close to the fan can make full use of the airflow provided by the fan to achieve efficient primary cooling, while the second tube layer far away from the fan uses the airflow after primary cooling for further cooling, thereby improving the overall cooling effect.

[0013] Preferably, the first tube layer includes a plurality of parallel tube segments and a plurality of connecting segments, the plurality of parallel tube segments are evenly arranged perpendicular to the air inlet direction, adjacent parallel tube segments are interconnected via the connecting segments, and the plurality of parallel tube segments enclose the first heat exchange space.

[0014] By adopting the above technical solution, the parallel pipe sections are evenly arranged perpendicular to the air inlet direction, which can make full use of the airflow provided by the fan, so that the airflow passes through each pipe section evenly, thereby improving the heat exchange efficiency. Secondly, the adjacent parallel pipe sections are interconnected through the connecting section, so that the heat exchange medium can flow smoothly between multiple pipe sections, forming a continuous and staggered heat exchange path, increasing the heat exchange area, and further improving the heat exchange effect.

[0015] Preferably, the second pipe layer includes multiple vertical pipe sections and diversion pipe sections, the multiple vertical pipe sections are distributed in a circular array, the vertical pipe sections are arranged perpendicular to the parallel pipe sections, the diversion pipe sections are located at both ends of the vertical pipe sections and are interconnected with the vertical pipe sections, and the multiple vertical pipe sections enclose the second heat exchange space.

[0016] By adopting the above technical solution, the second tube layer far away from the fan is further cooled by the airflow after primary cooling. The vertical arrangement of the vertical tube segment increases the contact area with the airflow, thereby making full use of the airflow after passing through the first tube layer. The diverter tube segment is located at both ends of the vertical tube segment and is interconnected with the vertical tube segment, so that the heat exchange medium can flow smoothly between the vertical tube segments to form a continuous heat exchange path. The combination of the vertical tube segment and the diverter tube segment increases the opportunity for secondary heat exchange, thereby further improving the heat exchange effect.

[0017] Preferably, the first tube layer and the second tube layer are fin tubes, and the inner walls of the first tube layer and the second tube layer are provided with a plurality of flow-disturbing protrusions, and the plurality of flow-disturbing protrusions are evenly distributed on the inner walls of the first tube layer and the second tube layer.

[0018] By adopting the above technical solution, the finned tube increases the surface area of ​​heat exchange, effectively improves the heat transfer efficiency of the fluid to be cooled, and enhances the cooling effect.

[0019] Preferably, it further comprises a cleaning piece, which is fixedly connected to the chassis and is used for cleaning the second tube layer.

[0020] By adopting the above technical solution, the cleaning piece can effectively prevent a large amount of dirt and impurities from accumulating on the outside of the inner wall of the second tube layer, keep the heat exchange outer surface of the pipeline clean, and thus maintain efficient heat exchange performance.

[0021] Preferably, the cleaning member comprises:

[0022] A fixed shaft, fixedly connected to a side of the chassis close to the air outlet;

[0023] A limit clamping seat is slidably connected to the fixed shaft along the axial direction of the fixed shaft, and the limit clamping seat is provided with a limit groove;

[0024] A rotating ring, disposed in the limiting groove and rotatably connected to the limiting clamping seat;

[0025] An elastic column, one end of which is fixedly connected to one side of the rotating ring, and the elastic column can abut against the vertical pipe section;

[0026] A cleaning brush head is fixedly connected to an end of the elastic column away from the rotating ring;

[0027] A driving member is fixedly connected to the chassis, and the driving member can drive the limit clamping seat to slide along the axial direction of the fixed shaft.

[0028] By adopting the above technical solution, when the limit clamp slides on the fixed shaft, the rotating ring drives the elastic column and the cleaning brush head to clean along the vertical pipe section of the second pipe layer. The cleaning brush head can closely contact the inner and outer walls of the vertical pipe section, and under the support of the elastic column, it generates a moderate cleaning pressure to ensure that the dirt on the surface of the pipe section is thoroughly cleaned.

[0029] Preferably, the driving member comprises:

[0030] A hydraulic cylinder is installed in the chassis, and the hydraulic cylinder has an output shaft, and the output shaft is fixedly connected to the limit clamping seat. The hydraulic cylinder can drive the limit clamping seat to slide along the axial direction of the fixed shaft.

[0031] By adopting the above technical solution, the hydraulic cylinder can slide the limit clamping seat along the axial direction of the fixed shaft through its output shaft, thereby realizing the drive control of the cleaning member.

[0032] Preferably, the elastic column is an air bag, and the cleaning member further comprises:

[0033] An air pump is arranged on the limiting card seat, the air pump is communicated with the airbag, and the air pump is used to inflate the airbag.

[0034] By adopting the above technical solution, the airbag acts as an elastic column and the internal air pressure can be adjusted by an air pump to meet the demand of applying different pressures to the cleaning brush head.

[0035] Preferably, the cleaning member further comprises:

[0036] A magnetic sheet, arranged on the elastic column and fixedly connected to the cleaning brush head;

[0037] The electromagnet is located on the rotating ring, and the electromagnet can drive the magnetic sheet to approach or move away from the rotating ring.

[0038] By adopting the above technical solution, under the joint action of the airbag and the electromagnet, the airbag can freely expand and contract in the limit groove, thereby driving the cleaning brush head to thoroughly clean the inner wall of the pipe section. The expansion of the airbag not only provides sufficient cleaning pressure, but also prevents the airbag from folding or deforming during the cleaning process, thereby ensuring the cleaning effect.

[0039] Preferably, a shutter is also provided at the air outlet of the chassis.

[0040] By adopting the above technical solution, the shutters can effectively control the direction of the airflow. By adjusting the angle of the shutters, the cooled air can be discharged in the required direction, thereby optimizing the air flow and preventing the cold air from being discharged directly into the work area or equipment area.

[0041] In summary, the present application includes at least one of the following beneficial technical effects:

[0042] 1. By staggering the first tube layer and the second tube layer, the heat exchange medium can flow in multiple flow paths, avoiding the problem of a single flow direction limiting the heat exchange effect. The first tube layer close to the fan makes full use of the airflow provided by the fan to achieve efficient primary cooling, while the second tube layer away from the fan uses the airflow after primary cooling for further cooling, improving the overall cooling effect. The staggered tube layer structure ensures that each tube section can get sufficient cooling air flow, avoiding the generation of cooling blind spots, thereby significantly improving the heat exchange efficiency;

[0043] 2. By setting the cleaning piece, it can effectively prevent a large amount of dirt and impurities from accumulating on the outer side of the inner wall of the second tube layer, keep the heat exchange outer surface of the pipeline clean, and thus maintain efficient heat exchange performance;

[0044] 3. By setting up cleaning parts, especially by using airbags and magnetic sheets in conjunction with electromagnets, the second pipe layer can be automatically cleaned. Under the action of the electromagnet, the airbag can freely expand and contract in the limit slot, driving the cleaning brush head to thoroughly clean the inner wall of the pipe section. Regular automatic cleaning prevents the decrease in heat transfer efficiency and pipe blockage caused by dirt accumulation, keeps the heat exchange outer surface of the pipe clean, and ensures efficient heat exchange performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application;

[0046] Figure 2 It is a schematic diagram of the structure of the first tube layer and the second tube layer of the present application;

[0047] Figure 3 It is a structural schematic diagram of the shutter of the present application;

[0048] Figure 4 It is a schematic diagram of the working status of the cleaning piece of this application;

[0049] Figure 5 It is a schematic diagram of the structure of the cleaning piece of this application;

[0050] Figure 6 It is a schematic diagram of the explosion structure of the cleaning piece of this application.

[0051] In the figure: 1. chassis; 11. mounting plate; 2. fan; 3. first pipe layer; 31. parallel pipe section; 32. connecting section; 4. second pipe layer; 41. vertical pipe section; 42. diverter pipe section; 5. cleaning part; 51. fixed shaft; 52. limit holder; 53. rotating ring; 54. elastic column; 55. cleaning brush head; 56. driving part; 561. hydraulic cylinder; 562. output shaft; 57. air pump; 58. magnetic sheet; 59. electromagnet; 6. shutter; 7. regulating valve. DETAILED DESCRIPTION

[0052] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] The following is combined with Figure 1 -Attached Figure 6 , further details of this application are given.

[0054] Example, see Figure 1-Figure 3 A multi-flow combined air cooler includes a chassis 1, a fan 2, a first tube layer 3, a second tube layer 4 and a louver 6.

[0055] Reference Figure 1 The chassis 1 is provided with a receiving cavity for receiving the first tube layer 3 and the second tube layer 4. The chassis 1 is provided with an air outlet on the top and an air inlet on the bottom. The fan 2 is installed on the side of the chassis 1 close to the air inlet to provide heat exchange airflow. The air inlet is connected to the fan 2, and the air outlet is connected to the outside. In this embodiment, there are two fans 2 and axial fans 2 are used, and the corresponding air inlet is circular.

[0056] Reference Figure 1 and Figure 2 The first tube layer 3 is arranged in the accommodating cavity near the fan 2, and includes a plurality of parallel tube sections 31 and a plurality of connecting sections 32. The connecting section 32 is U-shaped. The plurality of parallel tube sections 31 are evenly arranged perpendicular to the air inlet direction. Adjacent parallel tube sections 31 are interconnected through the connecting sections 32. The plurality of parallel tube sections 31 enclose a first heat exchange space. The first tube layer 3 also includes a liquid inlet section on the left side. A regulating valve 7 is arranged on the liquid inlet section. The regulating valve 7 is fixedly connected to the chassis 1 for controlling the flow rate and flow velocity of the inlet liquid.

[0057] Reference Figure 2 The second tube layer 4 is arranged in the accommodating cavity away from the fan 2. The second tube layer 4 includes a plurality of vertical tube segments 41 and a diverter tube segment 42. The plurality of vertical tube segments 41 are distributed in a ring array. The vertical tube segments 41 are arranged perpendicular to the parallel tube segments 31. The diverter tube segment 42 is in a ring shape. The diverter tube segment 42 is located at both ends of the vertical tube segment 41 and is respectively interconnected with the plurality of vertical tube segments 41. The plurality of vertical tube segments 41 enclose a second heat exchange space. The first tube layer 3 is interconnected with the second tube layer 4 and heat exchange medium is input and output therein. The diverter tube enables the heat exchange medium to flow smoothly between the vertical tube segments 41 to form a continuous heat exchange path.

[0058] The first tube layer 3 and the second tube layer 4 are arranged alternately, so that the heat exchange medium can flow in multiple flow paths, avoiding the limitation of heat exchange effect by a single flow direction. In addition, in this embodiment, the first tube layer 3 and the second tube layer 4 use finned tubes (fins are not shown in the figure), which increase the surface area of ​​heat exchange, effectively improve the heat transfer efficiency of the fluid to be cooled, and enhance the cooling effect.

[0059] The parallel pipe sections 31 close to the fan 2 are evenly arranged perpendicular to the air inlet direction, which can make full use of the airflow provided by the fan 2, allowing the airflow to pass through each pipe section to achieve efficient primary cooling. The vertical pipe section 41 and the diversion pipe section 42 far away from the fan 2 use the airflow after primary cooling for further cooling. The vertical arrangement of the vertical pipe section 41 increases the contact area with the airflow, thereby making full use of the higher temperature airflow after passing through the first pipe layer 3. The staggered multi-layer pipe structure ensures that each pipe section can obtain sufficient cooling air flow, avoiding the generation of cooling blind spots, thereby improving the heat exchange efficiency. The air cooler can process more heat exchange media under the same conditions, significantly improving the cooling efficiency of the equipment.

[0060] In other embodiments, the inner walls of the first tube layer 3 and the second tube layer 4 are provided with some flow-interfering protrusions (not shown in the figure). If the flow-interfering protrusions are evenly distributed on the inner walls of the first tube layer 3 and the second tube layer 4, the evenly distributed flow-interfering protrusions can disturb the fluid flow, break the fluid boundary layer, and increase the turbulent state of the fluid, thereby causing a certain amount of flow disturbance to the medium in the first tube layer 3 and the second tube layer 4, thereby extending the flow time of the medium and improving the heat transfer efficiency.

[0061] Reference Figure 4-Figure 6 The chassis 1 is fixedly connected with a mounting plate 11 inside, and the mounting plate 11 is located below the shutter 6. It also includes a cleaning member 5, which is fixedly connected to the mounting plate 11 on the chassis 1 and is used to clean the second tube layer 4. The cleaning member 5 includes a fixed shaft 51, a limit card seat 52, a rotating ring 53, an elastic column 54, a cleaning brush head 55, a driving member 56, an air pump 57, a magnetic sheet 58 and an electromagnet 59.

[0062] Reference Figure 5 The driving member 56 includes a hydraulic cylinder 561, which is installed in the chassis 1 and fixedly connected to the mounting plate 11. The hydraulic cylinder 561 has an output shaft 562, which is fixedly connected to the limit clamp 52. The hydraulic cylinder 561 can drive the limit clamp 52 to slide along the axial direction of the fixed shaft 51.

[0063] Reference Figure 5 and Figure 6 , the fixed shaft 51 is parallel to the output shaft 562, and the fixed shaft 51 is fixedly connected to the hydraulic cylinder 561. The limit clamp 52 is slidably connected to the fixed shaft 51 along the axial direction of the fixed shaft 51. The limit clamp 52 includes a first limit ring at the top, a connecting ring and a second limit ring at the bottom, and the two ends of the connecting ring are respectively fixedly connected to the first limit ring and the second limit ring. The first limit ring and the second limit ring are arranged in parallel and a limit groove is formed between the two. The rotating ring 53 is arranged in the limit groove, and the rotating ring 53 is rotatably connected to the limit clamp 52.

[0064] One end of the elastic column 54 is fixedly connected to one side of the rotating ring 53, and the elastic column 54 can abut the vertical pipe section 41. In this embodiment, there are three elastic columns 54 and air bags are used. The three elastic columns 54 are evenly arranged, and the cleaning brush head 55 is fixedly connected to one end of the elastic column 54 away from the rotating ring 53. When the driving member 56 is started, it can drive the limit card seat 52 to slide along the axial direction of the fixed shaft 51. The rotating ring 53 is provided in the limit groove provided on the limit card seat 52. It should be noted that the shape of the air bag after inflation is spiral blade-shaped (not shown in the figure), and then when the fan 2 outputs the wind flow, the air bag can rotate and drive the rotating ring 53 to rotate, so that the second pipe layer 4 can be cleaned more thoroughly. The rotating ring 53 rotates in the limit groove and drives the elastic column 54 to rotate.

[0065] One end of the elastic column 54 is fixedly connected to the rotating ring 53, and the other end is connected to a cleaning brush head 55. When the limit card seat 52 slides on the fixed shaft 51, the rotating ring 53 drives the elastic column 54 and the cleaning brush head 55 to clean the vertical pipe section 41 of the second pipe layer 4. The cleaning brush head 55 can closely contact the inner and outer walls of the vertical pipe section 41, and under the support of the elastic column 54, it generates a moderate cleaning pressure to ensure that the dirt on the surface of the pipe section is thoroughly cleaned. The sliding of the limit card seat 52 cooperates with the rotation of the cleaning brush head 55 to achieve all-round cleaning of the vertical pipe section 41. Through regular automatic cleaning, the heat transfer efficiency is prevented from decreasing and the pipeline is blocked due to the accumulation of dirt, thereby extending the service life of the equipment. The hydraulic cylinder 561 can drive the limit card seat 52 to slide along the axial direction of the fixed shaft 51, and cooperate with the expanded airbag, the rotating ring 53 and the cleaning brush head 55 to efficiently clean the vertical pipe section 41.

[0066] Reference Figure 5 The air pump 57 is arranged on the limit holder 52, and the air pump 57 is interconnected with the airbag, and the air pump 57 is used to inflate the airbag. The airbag acts as an elastic column 54, and the internal air pressure can be adjusted by the air pump 57 to achieve the requirement of applying different pressures to the cleaning brush head 55. The air pump 57 has an air inlet pipe, and the air inlet pipe passes through the first limit ring above and is interconnected with the airbag. In addition, the airbag has good elasticity and buffering performance, and can effectively protect the surface of the vertical pipe section 41 during the cleaning process.

[0067] Reference Figure 5 and Figure 6, the magnetic sheet 58 is arranged on the elastic column 54 and fixedly connected with the cleaning brush head 55, and the electromagnet 59 is located on the rotating ring 53, and the electromagnet 59 can drive the magnetic sheet 58 to approach or move away from the rotating ring 53. In the initial state, the airbag is located in the limiting groove, and the magnetic sheet 58 and the electromagnet 59 are attracted to each other by magnetic attraction, so that the airbag is fixed in the storage state. When cleaning is required, the magnetism of the electromagnet 59 is changed to generate a repulsive force with the magnetic sheet 58. Since the magnetic sheet 58 and the electromagnet 59 are magnetically attracted to each other, the magnetic sheet 58 moves outward along the direction of the elastic column 54, so that the airbag extends out of the limiting groove. Subsequently, the air pump 57 is started to inflate the inside of the airbag. As the airbag expands, the cleaning brush head is gradually pushed until the cleaning brush head is in close contact with the inner wall of the vertical pipe section 41. The expanded airbag provides continuous pressure to ensure that the cleaning brush head can effectively adhere to the pipe wall for cleaning. Under the combined action of the airbag and the electromagnet 59, the airbag can freely expand and contract in the limiting groove, thereby driving the cleaning brush head to thoroughly clean the inner wall of the pipe section. The expansion of the airbag not only provides sufficient cleaning pressure, but also prevents the airbag from folding or deforming during the cleaning process, thereby ensuring the cleaning effect.

[0068] As the air cooler runs for a long time, since the second tube layer 4 includes a plurality of vertical tube sections 41, it has a larger contact area with the air, and is therefore more likely to accumulate impurities such as dust and oil, which will cause the heat transfer performance to decrease and affect the cooling effect of the equipment. The use of the cleaning member 5 can effectively prevent a large amount of dirt and impurities from accumulating on the outer side of the inner wall of the second tube layer 4, keep the heat exchange outer surface of the pipeline clean, and thus maintain efficient heat exchange performance.

[0069] Reference Figure 3 The shutter 6 is arranged near the air outlet of the chassis 1, and the shutter 6 can effectively control the direction of the airflow. By adjusting the angle of the shutter 6, the cooled air can be discharged in the required direction, thereby optimizing the air flow and preventing the cold air from being directly discharged into the working area or the equipment area. In addition, it can prevent foreign objects such as dust, debris, and insects from entering the air cooler through the air outlet, thereby protecting the internal pipeline. By adjusting the opening of the shutter 6, the opening of the air outlet can also be accurately controlled, thereby adjusting the amount of air passing through, achieving the effect of energy saving and consumption reduction.

[0070] In other embodiments, the first tube layer 3 and the second tube layer 4 are detachably threadedly connected, and adjacent flow diversion pipe sections 42 are also detachably threadedly connected. The detachable connection facilitates the internal tube layer structure of the modular air cooler, and the second tube layer 4 can be added when the cooling effect needs to be improved.

[0071] The implementation principle of the embodiment of the present application is:

[0072] By setting the first tube layer 3 and the second tube layer 4 in the chassis 1, a multi-directional heat exchange path is formed, which significantly improves the heat exchange efficiency. The first tube layer 3 is located near the fan 2, and the parallel tube sections 31 are arranged to evenly distribute the airflow to achieve efficient primary cooling; the second tube layer 4 is away from the fan 2, and the vertical tube section 41 uses the airflow after primary cooling for further cooling. The staggered multi-layer tube structure ensures that each tube section can obtain sufficient cooling air to avoid cooling blind spots. In addition, the cleaning part 5 realizes all-round cleaning of the inner wall of the vertical tube section 41 through the linkage of the airbag, the rotating ring 53 and the cleaning brush head 55, preventing dirt accumulation and maintaining efficient heat exchange performance.

[0073] It should be noted that the hydraulic cylinder 561, air pump 57, regulating valve 7 and electromagnet 59 in this embodiment are all equipment purchased on the market, and the models can be selected or customized according to actual needs. In this application, we only use them and have not improved their structure and function. For technicians in this field, their setting method, installation method and electrical connection method only need to be debugged according to the requirements of their instruction manual, and they will not be described in detail here.

[0074] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-flow combined air cooler, characterized in that: include: The chassis (1) is provided with a receiving cavity; A fan (2) is installed on one side of the chassis (1) and is used to provide a heat exchange airflow. A plurality of air inlets and air outlets are provided in the chassis (1), wherein the air inlets are connected to the fan (2) and the air outlets are connected to the outside. A first tube layer (3) is arranged in the accommodating cavity close to the fan (2), and the first tube layer (3) forms a first heat exchange space; A second tube layer (4) is arranged in the accommodating cavity away from the fan (2), and the second tube layer (4) forms a second heat exchange space; The first tube layer (3) and the second tube layer (4) are interconnected and have heat exchange medium input and output, and the first tube layer (3) and the second tube layer (4) are arranged alternately; The first tube layer (3) comprises a plurality of parallel tube segments (31) and a plurality of connecting segments (32), the plurality of parallel tube segments (31) being evenly arranged perpendicular to the air inlet direction, adjacent parallel tube segments (31) being interconnected via the connecting segments (32), and the plurality of parallel tube segments (31) enclosing the first heat exchange space; The second pipe layer (4) comprises a plurality of vertical pipe sections (41) and flow-dividing pipe sections (42), the plurality of vertical pipe sections (41) being distributed in a ring array, the vertical pipe sections (41) being arranged perpendicular to the parallel pipe sections (31), the flow-dividing pipe sections (42) being located at both ends of the vertical pipe sections (41) and being interconnected with the vertical pipe sections (41), and the plurality of vertical pipe sections (41) enclosing the second heat exchange space; It also comprises a cleaning piece (5), the cleaning piece (5) being fixedly connected to the chassis (1), the cleaning piece (5) being used to clean the second tube layer (4); the cleaning piece (5) comprises: A fixed shaft (51) fixedly connected to a side of the chassis (1) close to the air outlet; A limit clamping seat (52) is slidably connected to the fixed shaft (51) along the axial direction of the fixed shaft (51), and the limit clamping seat (52) is provided with a limit groove; A rotating ring (53) is disposed in the limiting groove and is rotatably connected to the limiting clamping seat (52); An elastic column (54), one end of which is fixedly connected to one side of the rotating ring (53), and the elastic column (54) is capable of abutting against the vertical pipe section (41); A cleaning brush head (55) fixedly connected to an end of the elastic column (54) facing away from the rotating ring (53); A driving member (56) is fixedly connected to the chassis (1), and the driving member (56) is capable of driving the limiting clamping seat (52) to slide along the axial direction of the fixed shaft (51).

2. The multi-flow combined air cooler according to claim 1, characterized in that: The first tube layer (3) and the second tube layer (4) are finned tubes, and the inner walls of the first tube layer (3) and the second tube layer (4) are provided with a plurality of flow-disturbing protrusions, and the plurality of flow-disturbing protrusions are evenly distributed on the inner walls of the first tube layer (3) and the second tube layer (4).

3. The multi-flow combined air cooler according to claim 1, characterized in that: The driving member (56) comprises: A hydraulic cylinder (561) is installed in the chassis (1); the hydraulic cylinder (561) has an output shaft (562); the output shaft (562) is fixedly connected to the limit clamping seat (52); the hydraulic cylinder (561) can drive the limit clamping seat (52) to slide along the axial direction of the fixed shaft (51).

4. The multi-flow combined air cooler according to claim 3, characterized in that: The elastic column (54) is an air bag, and the cleaning member (5) further comprises: An air pump (57) is arranged on the position limiting holder (52); the air pump (57) and the air bag are in communication with each other; the air pump (57) is used to inflate the air bag.

5. The multi-flow combined air cooler according to claim 1, characterized in that: The cleaning member (5) further comprises: A magnetic sheet (58) disposed on the elastic column (54) and fixedly connected to the cleaning brush head (55); An electromagnet (59) is located on the rotating ring (53), and the electromagnet (59) can drive the magnetic sheet (58) to move closer to or farther away from the rotating ring (53).

6. The multi-flow combined air cooler according to claim 1, characterized in that: A shutter (6) is also provided at the air outlet of the chassis (1).

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