Sawtooth-shaped plate-fin heat exchanger

Abstract

The invention relates to the technical field of heat exchange equipment, and discloses a zigzag plate-fin heat exchanger which comprises a mounting frame, a plurality of flow channel units are arranged in the mounting frame, a plurality of dismounting mechanisms are arranged on the side face of the mounting frame and used for modularly dismounting the flow channel units, and a circulating cleaning mechanism is arranged on the side face of the mounting frame and used for cleaning the flow channel units. The mounting frame is used for circularly cleaning dust on the flow channel units, and a stabilizing mechanism is arranged at the bottom of the mounting frame; and each runner unit comprises an upper segmentation composite plate and a lower segmentation composite plate, the two segmentation composite plates are slidably connected into the mounting frame, and a sealing strip is fixedly connected between the two segmentation composite plates. The heat exchange efficiency is improved through the fin set, convenient dismounting and cleaning are achieved through modular design, the dismounting and cleaning period is prolonged through the cleaning mechanism, the operation efficiency is improved, the stabilizing mechanism is stable and portable, the problems of performance, maintenance and cleaning of a traditional heat exchanger are solved, and the heat exchanger is efficient, energy-saving and reliable.

Description

Technical Field

[0001] This invention relates to the field of heat exchange equipment technology, and in particular to a serrated plate-fin heat exchanger. Background Technology

[0002] Plate-fin heat exchangers, especially serrated plate-fin heat exchangers, have been widely used in many industrial fields such as aerospace, cryogenic engineering, chemical engineering, and air separation due to their advantages of compact structure, large heat transfer area per unit volume, and high heat transfer efficiency. They effectively enhance the convective heat transfer process by forcing the fluid boundary layer to periodically interrupt and rebuild through serrated fins within the channels.

[0003] However, existing sawtooth plate-fin heat exchangers still have inherent limitations in structure and function. On the one hand, in pursuit of higher heat transfer performance, their internal flow channels are designed to be extremely narrow and complex. While this enhances heat transfer, it also leads to significant pressure losses in fluid flow, increasing the system's operating energy consumption. Simultaneously, this single-layer boundary layer disturbance method has reached a bottleneck in further improving heat transfer efficiency. On the other hand, traditional plate-fin heat exchangers typically employ a monolithic vacuum brazing manufacturing process, forming an inseparable structure. Once internal blockage, corrosion, or damage occurs, the difficulty in on-site repair often necessitates complete replacement, resulting in substantial economic losses and severely impacting production continuity. Furthermore, because their frontal surface is directly exposed to the environment, it easily accumulates dust and impurities. The adhesion of dirt rapidly deteriorates heat transfer performance and increases flow resistance. Existing cleaning methods largely rely on manual cleaning or backflushing after shutdown, which is not only inefficient but also unable to provide real-time online maintenance, making it difficult to ensure the equipment remains in optimal working condition over the long term. Summary of the Invention

[0004] The purpose of this invention is to provide a serrated plate-fin heat exchanger that solves the problems of difficulty in balancing heat transfer enhancement and pressure drop control, the difficulty and high cost of maintenance due to the integral structure, the lack of effective online cleaning methods due to susceptibility to dust accumulation and contamination, and the inability to balance stability during installation and convenience during transportation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A sawtooth plate-fin heat exchanger includes a mounting frame, the mounting frame having multiple flow channel units inside, multiple disassembly and assembly mechanisms on the side of the mounting frame for modular disassembly and assembly of the flow channel units, a circulating cleaning mechanism on the side of the mounting frame for cyclically cleaning dust on the flow channel units, and a stabilizing mechanism at the bottom of the mounting frame. The flow channel unit includes two upper and lower segmented composite plates, both of which are slidably connected inside the mounting frame. A sealing strip is fixedly connected between the two segmented composite plates, and a mating plate is fixedly connected to the side of the sealing strip. The mating plate is slidably connected inside the mounting frame. Multiple mother fins are fixedly connected between the two segmented composite plates, and multiple daughter fins are fixedly connected to the side of each mother fin. A row of V-shaped columns is arranged between every two rows of mother fins, and honeycomb holes are formed on the surface of each daughter fin.

[0006] Preferably, the disassembly and assembly mechanism includes a slide rod, which is slidably connected to the side of the mounting bracket. One end of the slide rod is fixedly connected to a locking block, and the other end of the slide rod is rotatably connected to a rotating handle. A baffle is fixedly connected to the side of the mounting bracket, and the slide rod is slidably connected to the middle of the baffle. A spring is sleeved on the outer periphery of the slide rod.

[0007] Preferably, the spring is disposed between the locking block and the baffle, and the top of the docking plate is provided with a locking groove, and the locking block and the locking groove are engaged with each other.

[0008] Preferably, the rotary handle has a limiting groove inside, and the slide rod is rotatably connected to the middle of the limiting groove.

[0009] Preferably, a positioning plate is fixedly connected to the bottom of the lower segmented composite plate, and a positioning groove is opened inside the upper segmented composite plate. The positioning plate is slidably connected to the middle of the positioning groove. A guide plate is fixedly connected to the rear side of the mounting bracket, and a sealing guide pipe is fixedly connected to the front side of the guide plate. The sealing guide pipe is slidably connected to the rear side of the lower segmented composite plate.

[0010] Preferably, the circulating cleaning mechanism includes a mounting shell, which is fixedly connected to the side of the mounting frame. Two rotating columns are rotatably connected to the middle of the mounting shell, and a wheel is fixedly connected to the outer side of each of the two rotating columns. A synchronous belt is sleeved on the outer circumference of the two rotating columns, and a drive column is fixedly connected to the side of the synchronous belt. A connecting plate is slidably connected to the middle of the mounting shell, and the drive column is located in the middle of the connecting plate. A motor is fixedly connected to the bottom of the mounting shell, and one of the rotating columns is fixedly connected to the output end of the motor. A cleaning component is provided on the side of the connecting plate.

[0011] Preferably, the cleaning assembly includes a connecting shell, which is fixedly connected to the side of the connecting plate. A cleaning brush is slidably connected to the middle of the connecting shell. A fixing plate is fixedly connected inside the connecting shell. A fixing rod is fixedly connected to the side of the fixing plate. A sliding block is slidably connected to the outside of the fixing rod. A connecting rod is rotatably connected to the side of the sliding block. The side of the connecting rod is rotatably connected to the side of the cleaning brush. A second spring is sleeved on the outer periphery of the fixing rod and is disposed between the fixing plate and the sliding block.

[0012] Preferably, a telescopic rod is fixedly connected inside the connecting shell, and the end of the telescopic rod is fixedly connected to the side of the cleaning brush.

[0013] Preferably, the connecting shell has a guide groove inside, and the mounting bracket has a guide post fixedly connected to its side, with the guide post slidably connected to the middle of the guide groove.

[0014] Preferably, the stabilizing mechanism includes a fixed shell, which is fixedly connected to the bottom of the mounting frame. A rack is slidably connected to the middle of the fixed shell, and a support plate is fixedly connected to the side of the rack. A second motor is fixedly connected to the bottom of the fixed shell, and a gear is fixedly connected to the output end of the second motor. The gear meshes with the rack. A first support plate is rotatably connected to the side of the fixed shell, and a second support plate is rotatably connected to the bottom of the support plate. The end of the first support plate is rotatably connected to the middle of the second support plate.

[0015] In summary, the present invention has at least one of the following beneficial technical effects: 1. This invention, by setting a fin group composed of staggered sub-fin arrays inside the flow channel unit and opening micro-honeycomb holes on the surface of the sub-fins, not only generates strong lateral mixing when the fluid flows in the channel, but also forms micro vortices on the surface of the fin group. The multi-scale disturbance structure can effectively destroy the fluid boundary layer, significantly improve the heat transfer coefficient, allow heat exchange to be completed with lower flow velocities, reduce the base pressure loss, and the honeycomb hole structure can partially offset the increase in resistance caused by enhanced heat transfer. Thus, without increasing too much flow resistance, the overall heat exchange efficiency of the heat exchanger is greatly improved, and the original effect can be achieved with lower operating energy consumption.

[0016] 2. This invention utilizes a disassembly and assembly mechanism located on the top of the mounting frame. By rotating a handle, a spring-loaded locking block is quickly locked or released from the slot on the flow channel unit. This transforms the traditional one-piece welded heat exchanger into a modular structure that can be independently disassembled and assembled. This allows for the replacement and offline cleaning and maintenance of individual flow channel units, preventing flow channel blockage and performance degradation caused by dirt accumulation. It greatly simplifies the cleaning and maintenance process, shortens downtime, and significantly improves the long-term stability and maintainability of the equipment throughout its lifecycle.

[0017] 3. This invention features a circulating cleaning mechanism driven by a motor. This mechanism, through the linkage of a synchronous belt and a drive column, drives a cleaning brush to perform reciprocating cleaning on the fluid inlet end face of the heat exchanger. This achieves online automated cleaning of the flow-facing surface of the heat exchanger where dust has accumulated significantly, effectively reducing the cycle of disassembly and maintenance, minimizing the impact on equipment operation, and improving equipment operating efficiency.

[0018] 4. This invention uses a gear and rack mechanism driven by a second motor to control the extension and retraction of the bottom support plate. When installation and fixing are required, the support plate extends outward, and support plates one and two unfold simultaneously, forming a triangular support. This increases the support base area of ​​the equipment, greatly improving stability during installation and preventing the risk of accidental tipping. When movement and transportation are required, the support plate moves inward, and support plates one and two retract simultaneously, reducing the equipment's footprint and allowing it to pass through narrow passages more easily and conveniently, thus balancing stability during installation with ease of movement. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a rear view of the present invention; Figure 3 This is a schematic diagram of the structure of the segmented composite plate of the present invention; Figure 4 This is a schematic diagram of the structure of the mother fin of the present invention; Figure 5 This is a schematic diagram of the flow channel unit of the present invention; Figure 6 This is a schematic diagram of the module assembly / disassembly mechanism of the present invention; Figure 7 This is a schematic diagram of the cyclic cleaning mechanism of the present invention; Figure 8 This is a schematic diagram of the synchronous belt structure of the present invention; Figure 9 This is a schematic diagram of the connecting plate of the present invention; Figure 10 This is a schematic diagram of the structure of the fixing rod of the present invention; Figure 11 This is a schematic diagram of the structure of the fixing shell of the present invention; Figure 12 This is a schematic diagram of the stabilizing mechanism of the present invention; Figure 13 This is a schematic diagram of the structure of the support plate of the present invention; Figure 14 This is a cross-sectional view of the lower segmented composite plate of the present invention.

[0020] Among them, 1. Mounting bracket; 2. Flow channel unit; 201. Segmented composite plate; 202. Seal; 203. Butt joint plate; 204. Mother fin; 205. Daughter fin; 206. Honeycomb hole; 207. V-shaped column; 3. Assembly / disassembly mechanism; 301. Slide rod; 302. Locking block; 303. Rotating handle; 304. Spring 1; 305. Locking slot; 306. Limiting slot; 307. Positioning plate; 308. Positioning slot; 309. Baffle; 4. Circulating cleaning mechanism; 401. Mounting housing; 402. Rotating column; 403. Rotary wheel; 404. Synchronous belt; 405. Drive column; 406. Connecting plate; 407. Motor 1; 408. Connecting housing; 409. Cleaning brush; 410. Fixing plate; 411. Fixing rod; 412. Sliding block; 413. Connecting rod; 414. Spring 2; 415. Telescopic rod; 416. Guide groove; 417. Guide column; 5. Stabilizing mechanism; 501. Fixed housing; 502. Rack; 503. Support plate; 504. Motor II; 505. Gear; 506. Support plate I; 507. Support plate II; 6. Flow deflector; 7. Sealed flow deflector. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 - Appendix Figure 12 The present invention will be further described in detail below.

[0022] The present invention provides a sawtooth plate-fin heat exchanger, including a mounting frame 1, a plurality of flow channel units 2 are arranged inside the mounting frame 1, a plurality of disassembly and assembly mechanisms 3 are arranged on the side of the mounting frame 1 for modular disassembly and assembly of the flow channel units 2, a circulating cleaning mechanism 4 is arranged on the side of the mounting frame 1 for circulating cleaning of dust on the flow channel units 2, and a stabilizing mechanism 5 is arranged at the bottom of the mounting frame 1. The flow channel unit 2 includes two upper and lower segmented composite plates 201. Both segmented composite plates 201 are slidably connected inside the mounting frame 1. A sealing strip 202 is fixedly connected between the two segmented composite plates 201. A docking plate 203 is fixedly connected to the side of the sealing strip 202. The docking plate 203 is slidably connected inside the mounting frame 1. Multiple mother fins 204 are fixedly connected between the two segmented composite plates 201. Multiple daughter fins 205 are fixedly connected to the side of each mother fin 204. A row of V-shaped columns 207 is provided between every two rows of mother fins 204. The surface of the daughter fins 205 is provided with honeycomb holes 206.

[0023] Specifically, each mother fin 204 is set in the direction of tooth length according to the golden ratio of 0.618L, and is composed of an array of multiple sub-fins 205. The tooth height of the sub-fins 205 is between 1.2 and 1.5 mm, and the tooth spacing of the sub-fins 205 is between 0.8 and 1.2 mm. The composite fin group composed of mother fins 204 and sub-fins 205 is formed by stamping and laser composite processing of 0.2 mm thick aluminum alloy plate 6061-T6, with a surface roughness of less than or equal to 0.8 μm. The sub-fins 205 are staggered between each two rows. When the main fluid flows out from the gap of the upper row of sub-fins 205, it will directly impact the frontal surface of the lower row of sub-fins 205, and at the same time generate a strong lateral flow, so that the main fluid mixes with the fluid near the surface of the mother fin 204, and destroys the state of fluid stratification in the channel. Multiple honeycomb holes 206 are formed on the surface of the sub-fin 205. The honeycomb holes 206 with a diameter between 0.2 and 0.5 mm are formed using laser micromachining technology. The hole spacing of the honeycomb holes 206 is between 1.5 and 2.0 mm, and the hole depth is between 0.3 and 0.5 mm. When the main fluid passes through the edge of the honeycomb holes 206, a series of stable, rotating micro vortex reinforcement zones can be formed inside and downstream, which effectively reduces the thermal resistance on the composite fin assembly and improves the heat transfer efficiency of the heat exchanger. A row of V-shaped columns 207 is provided between two adjacent rows of composite fin assemblies. The top of the V-shaped columns 207 is provided with V-shaped guide grooves. The V-shaped columns 207 are precision cast stainless steel parts, forming a 0.2 mm gap sealing cavity with the composite fin assembly. When the fluid passes through the V-shaped guide grooves on the top of the V-shaped columns 207, it will undergo secondary diversion (at a ratio of 1:1.2), which can increase the complexity of the flow and the intensity of turbulence, and break the stable flow structure formed inside the flow channel.

[0024] Please see the appendix Figure 1 Appendix Figure 5 and attached Figure 6 In a preferred embodiment of the present invention, the disassembly and assembly mechanism 3 includes a slide rod 301, which is slidably connected to the side of the mounting bracket 1. One end of the slide rod 301 is fixedly connected to a locking block 302, and the other end of the slide rod 301 is rotatably connected to a rotating handle 303. A baffle 309 is fixedly connected to the side of the mounting bracket 1, and the slide rod 301 is slidably connected to the middle of the baffle 309. A spring 304 is sleeved on the outer periphery of the slide rod 301.

[0025] Specifically, the connection between the rotating handle 303 and the slide bar 301 is a cylindrical rod. The rotating handle 303 rotates around the cylindrical rod. When the rotating handle 303 moves towards the vertical baffle 309, the slide bar 301 moves away from the baffle 309, pulling the locking block 302 upward. When the rotating handle 303 moves towards the vertical baffle 309, the slide bar 301 moves closer to the baffle 309, and the pressure generated by the baffle 309 and the spring 304 causes the locking block 302 to move downward.

[0026] Please see the appendix Figure 1 Appendix Figure 5 and attached Figure 6 In a preferred embodiment of the present invention, a spring 304 is disposed between the locking block 302 and the baffle 309, and a locking groove 305 is provided on the top of the docking plate 203, and the locking block 302 and the locking groove 305 are engaged with each other.

[0027] Specifically, the card block 302 is inserted into the card slot 305 to fix the position of the flow channel unit 2, and the card block 302 is removed from the card slot 305 to disassemble the currently used flow channel unit 2.

[0028] Please see the appendix Figure 1 Appendix Figure 5 and attached Figure 6 In a preferred embodiment of the present invention, a limiting groove 306 is provided inside the rotating handle 303, and the slide rod 301 is rotatably connected to the middle of the limiting groove 306.

[0029] Specifically, by setting the limiting groove 306 to limit the rotation position of the rotating handle 303, the slide bar 301 can be moved accurately inward and outward.

[0030] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 5 Appendix Figure 6 and attached Figure 14 In a preferred embodiment of the present invention, a positioning plate 307 is fixedly connected to the bottom of the lower dividing composite plate 201, and a positioning groove 308 is provided inside the upper dividing composite plate 201. The positioning plate 307 is slidably connected to the middle of the positioning groove 308. A guide plate 6 is fixedly connected to the rear side of the mounting bracket 1, and a sealing guide pipe 7 is fixedly connected to the front side of the guide plate 6. The sealing guide pipe 7 is slidably connected to the rear side of the lower dividing composite plate 201.

[0031] Specifically, different flow channel units 2 are positioned to each other through the cooperation of positioning plate 307 and positioning groove 308. The lower segmented composite plate 201 has a hollow structure and is equipped with internal fins. An inlet is provided on the rear side. Multiple sealed guide pipes 7 are provided on the front side of the guide plate 6, the number of which corresponds to the number of flow channel units 2. The sealed guide pipes 7 are inserted into the inlet of the segmented composite plate 201. The liquid that needs to be heated is input into the guide plate 6 and then enters the segmented composite plate 201 below each flow channel unit 2 through the sealed guide pipes 7 for heat exchange.

[0032] Please see the appendix Figure 1 Appendix Figure 7 Appendix Figure 8 and attached Figure 9In a preferred embodiment of the present invention, the circulating cleaning mechanism 4 includes a mounting shell 401, which is fixedly connected to the side of the mounting frame 1. Two rotating columns 402 are rotatably connected to the middle of the mounting shell 401. Rotary wheels 403 are fixedly connected to the outer sides of the two rotating columns 402. A synchronous belt 404 is sleeved on the outer periphery of the two rotating wheels 403. A drive column 405 is fixedly connected to the side of the synchronous belt 404. A connecting plate 406 is slidably connected to the middle of the mounting shell 401. The drive column 405 is located in the middle of the connecting plate 406. A motor 407 is fixedly connected to the bottom of the mounting shell 401. One of the rotating columns 402 is fixedly connected to the output end of the motor 407. A cleaning component is provided on the side of the connecting plate 406.

[0033] Specifically, motor 407 controls the rotation of rotating column 402, and rotating column 402 controls the operation of synchronous belt 404 through rotating wheel 403. When drive column 405 on the side of synchronous belt 404 moves horizontally, it pushes connecting plate 406 forward. When drive column 405 rotates around rotating column 402, drive column 405 slides laterally in connecting plate 406. When drive column 405 moves horizontally again, connecting plate 406 moves back, realizing the cyclic movement of connecting plate 406 and cleaning component.

[0034] Please see the appendix Figure 1 Appendix Figure 7 Appendix Figure 8 Appendix Figure 9 and attached Figure 10 In a preferred embodiment of the present invention, the cleaning assembly includes a connecting shell 408, which is fixedly connected to the side of a connecting plate 406. A cleaning brush 409 is slidably connected to the middle of the connecting shell 408. A fixing plate 410 is fixedly connected inside the connecting shell 408. A fixing rod 411 is fixedly connected to the side of the fixing plate 410. A sliding block 412 is slidably connected to the outside of the fixing rod 411. A connecting rod 413 is rotatably connected to the side of the sliding block 412. The side of the connecting rod 413 is rotatably connected to the side of the cleaning brush 409. A second spring 414 is sleeved on the outer periphery of the fixing rod 411. The second spring 414 is disposed between the fixing plate 410 and the sliding block 412.

[0035] Specifically, when the cleaning brush 409 is under force, the connecting rod 413 and the sliding block 412 compress the second spring 414, causing the cleaning brush 409 to move into the connecting shell 408. When the cleaning brush 409 is not under force, the pressure applied to the sliding block 412 by the second spring 414 causes the connecting rod 413 to control the cleaning brush 409 to move outward, thereby achieving elastic displacement of the cleaning brush 409 and preventing the cleaning brush 409 from getting stuck.

[0036] Please see the appendix Figure 1 Appendix Figure 7 Appendix Figure 8 Appendix Figure 9and attached Figure 10 In a preferred embodiment of the present invention, a telescopic rod 415 is fixedly connected inside the connecting shell 408, and the end of the telescopic rod 415 is fixedly connected to the side of the cleaning brush 409.

[0037] Specifically, by setting the telescopic rod 415, the trajectory of the cleaning brush 409 within the connecting housing 408 is limited.

[0038] Please see the appendix Figure 1 Appendix Figure 7 Appendix Figure 8 Appendix Figure 9 and attached Figure 10 In a preferred embodiment of the present invention, a guide groove 416 is provided inside the connecting shell 408, and a guide post 417 is fixedly connected to the side of the mounting bracket 1. The guide post 417 is slidably connected to the middle of the guide groove 416.

[0039] Specifically, the guide post 417 and the guide groove 416 cooperate to support and limit the movement trajectory of the connecting shell 408.

[0040] Please see the appendix Figure 1 Appendix Figure 11 Appendix Figure 12 and attached Figure 13 The stabilizing mechanism 5 includes a fixed housing 501, which is fixedly connected to the bottom of the mounting frame 1. A rack 502 is slidably connected to the middle of the fixed housing 501. A support plate 503 is fixedly connected to the side of the rack 502. A second motor 504 is fixedly connected to the bottom of the fixed housing 501. A gear 505 is fixedly connected to the output end of the second motor 504. The gear 505 meshes with the rack 502. A first support plate 506 is rotatably connected to the side of the fixed housing 501. A second support plate 507 is rotatably connected to the bottom of the support plate 503. The end of the first support plate 506 is rotatably connected to the middle of the second support plate 507.

[0041] Specifically, motor 2 504 drives gear 505, which rotates within fixed housing 501. Two racks 502 are slidably connected inside fixed housing 501, symmetrical about the center of gear 505. When motor 2 504 rotates gear 505 forward, it controls the two racks 502 and support plate 503 to move outward. The outward movement of support plate 503 causes support plate 1 506 and support plate 2 507 to unfold, forming a triangular support and increasing the support area of ​​the heat exchanger. When motor 2 504 rotates gear 505 in reverse, it controls the two racks 502 and support plate 503 to move inward into fixed housing 501. The inward movement of support plate 503 causes support plate 1 506 and support plate 2 507 to retract, reducing the floor space occupied by the heat exchanger. Simultaneously, a support rod is located on the side of support plate 503. The support rod of one support plate 503 slides within the rack 502 of the support rod of the other support plate 503, improving the stability of the rack 502's movement.

[0042] Working principle: Each flow channel unit 2 has an array of multiple sub-fins 205 mounted on its mother fin 204. The two rows of sub-fins 205 are staggered. The main fluid flowing out from the gaps between the upper row of sub-fins 205 directly impacts the frontal surface of the lower row of sub-fins 205, inducing a strong lateral flow. This forces the main fluid to mix with the fluid near the surface of the mother fin 204, breaking the stratified flow state within the channel, effectively improving the heat transfer coefficient, allowing for lower flow velocities to complete heat exchange, and reducing energy consumption and foundation pressure loss. Simultaneously, multiple honeycomb holes 206 are formed on the surface of the sub-fins 205. When the main fluid sweeps across these honeycomb holes 206… At the edge of 06, a series of stable, rotating micro vortices will form inside and downstream, improving the heat transfer effect. Finally, V-shaped columns 207 are installed between each row of mother fins 204. Although the V-shaped columns 207 increase the morphological drag, the stable vortices inside the honeycomb holes 206 will reduce the total wall friction drag to offset the increase in morphological drag. The V-shaped guide grooves at the top of the V-shaped columns 207 will perform secondary diversion of the fluid at the top of the V-shaped columns 207, further enhancing the complexity of the flow and the intensity of turbulence, and disrupting the formed stable flow structure. The above structures work together to reduce energy consumption and foundation pressure loss, and improve the energy efficiency and heat exchange efficiency of the heat exchanger.

[0043] When it is necessary to replace the flow channel unit 2, rotate the rotating handle 303 to make its vertical baffle 309, pull the slide rod 301 and the locking block 302 upward, and the locking block 302 disengages from the locking groove 305 of the docking plate 203, so that the currently used flow channel unit 2 can be removed. Slide the flow channel unit 2 to be replaced into the mounting bracket 1, rotate the rotating handle 303 in the opposite direction to make its vertical baffle 309, move the slide rod 301 downward, and under the pressure applied by the spring 304 to the locking block 302, the locking block 302 is locked downward into the locking groove 305 to fix the flow channel unit 2, so as to realize quick replacement of the flow channel unit 2 and improve the work efficiency of cleaning and maintaining the flow channel unit 2.

[0044] During normal operation of the heat exchanger, the starting motor 407 drives the rotating column 402 to rotate. The rotating column 402 controls the synchronous belt 404 to move through the wheel 403. At the same time, when the drive column 405 on the side of the synchronous belt 404 moves horizontally, it pushes the connecting plate 406, which moves forward through the connecting shell 408 with the cleaning brush 409. When the drive column 405 rotates around the rotating column 402, it slides laterally in the connecting plate 406. When the drive column 405 moves horizontally again, the connecting plate 406 and the connecting shell 408 move back with the cleaning brush 409, realizing the cyclic movement of the cleaning brush 409. This cleans the dust on the heavily dusty front surface of the flow channel unit 2, increases the working cycle of cleaning and maintaining the flow channel unit 2, improves work efficiency, and effectively reduces the thermal resistance on the flow channel unit 2, thus improving heat exchange efficiency.

[0045] When installing the heat exchanger, first move it to the designated location, then start motor 2 504. Motor 2 504 rotates forward, and gear 505 rotates to push rack 502, causing it to move outward along with support plate 503. At the same time, support plate 1 506 and support plate 2 507 unfold outward. Support plate 503, support plate 1 506, and support plate 2 507 form a triangular support, increasing the heat exchanger's footprint and effectively enhancing the stability of the heat exchanger installation, preventing it from falling and being damaged. When moving and transporting the heat exchanger, start motor 2 504 and reverse gear 505. The reverse gear 505 causes rack 502 to move inward along with support plate 503, causing support plate 1 506 and support plate 2 507 to retract, reducing the heat exchanger's footprint and improving the convenience of moving and transporting it.

Claims

1. A sawtooth plate-fin heat exchanger, comprising a mounting bracket (1), characterized in that, The mounting frame (1) is provided with multiple flow channel units (2) inside. The mounting frame (1) is provided with multiple disassembly and assembly mechanisms (3) on its side for modular disassembly and assembly of the flow channel units (2). The mounting frame (1) is provided with a circulating cleaning mechanism (4) on its side for circulating cleaning of dust on the flow channel units (2). The mounting frame (1) is provided with a stabilizing mechanism (5) at its bottom. The flow channel unit (2) includes two upper and lower segmented composite plates (201). Both segmented composite plates (201) are slidably connected inside the mounting frame (1). A sealing strip (202) is fixedly connected between the two segmented composite plates (201). A docking plate (203) is fixedly connected to the side of the sealing strip (202). The docking plate (203) is slidably connected inside the mounting frame (1). Multiple mother fins (204) are fixedly connected between the two segmented composite plates (201). Multiple daughter fins (205) are fixedly connected to the side of each mother fin (204). A row of V-shaped columns (207) is provided between every two rows of mother fins (204). The surface of the daughter fins (205) is provided with honeycomb holes (206).

2. A sawtooth plate-fin heat exchanger according to claim 1, characterized in that, The disassembly and assembly mechanism (3) includes a slide rod (301), which is slidably connected to the side of the mounting bracket (1). One end of the slide rod (301) is fixedly connected to a locking block (302), and the other end of the slide rod (301) is rotatably connected to a rotating handle (303). A baffle (309) is fixedly connected to the side of the mounting bracket (1), and the slide rod (301) is slidably connected to the middle of the baffle (309). A spring (304) is sleeved on the outer periphery of the slide rod (301).

3. A sawtooth plate-fin heat exchanger according to claim 2, characterized in that, The spring (304) is disposed between the locking block (302) and the baffle (309), and the top of the docking plate (203) is provided with a locking groove (305), and the locking block (302) and the locking groove (305) are engaged with each other.

4. A sawtooth plate-fin heat exchanger according to claim 2, characterized in that, The rotating handle (303) has a limiting groove (306) inside, and the slide rod (301) is rotatably connected to the middle of the limiting groove (306).

5. A sawtooth plate-fin heat exchanger according to claim 2, characterized in that, A positioning plate (307) is fixedly connected to the bottom of the lower segmented composite plate (201), and a positioning groove (308) is opened inside the upper segmented composite plate (201). The positioning plate (307) is slidably connected to the middle of the positioning groove (308). A guide plate (6) is fixedly connected to the rear side of the mounting bracket (1), and a sealing guide pipe (7) is fixedly connected to the front side of the guide plate (6). The sealing guide pipe (7) is slidably connected to the rear side of the lower segmented composite plate (201).

6. A sawtooth plate-fin heat exchanger according to claim 1, characterized in that, The circulating cleaning mechanism (4) includes a mounting shell (401), which is fixedly connected to the side of the mounting frame (1). Two rotating columns (402) are rotatably connected to the middle of the mounting shell (401). Rollers (403) are fixedly connected to the outer sides of the two rotating columns (402). A synchronous belt (404) is sleeved on the outer periphery of the two rollers (403). A drive column (405) is fixedly connected to the side of the synchronous belt (404). A connecting plate (406) is slidably connected to the middle of the mounting shell (401). The drive column (405) is located in the middle of the connecting plate (406). A motor (407) is fixedly connected to the bottom of the mounting shell (401). One of the rotating columns (402) is fixedly connected to the output end of the motor (407). A cleaning component is provided on the side of the connecting plate (406).

7. A sawtooth plate-fin heat exchanger according to claim 6, characterized in that, The cleaning assembly includes a connecting shell (408), which is fixedly connected to the side of the connecting plate (406). A cleaning brush (409) is slidably connected to the middle of the connecting shell (408). A fixing plate (410) is fixedly connected inside the connecting shell (408). A fixing rod (411) is fixedly connected to the side of the fixing plate (410). A sliding block (412) is slidably connected to the outside of the fixing rod (411). A connecting rod (413) is rotatably connected to the side of the sliding block (412). The side of the connecting rod (413) is rotatably connected to the side of the cleaning brush (409). A second spring (414) is sleeved on the outer periphery of the fixing rod (411). The second spring (414) is disposed between the fixing plate (410) and the sliding block (412).

8. A sawtooth plate-fin heat exchanger according to claim 7, characterized in that, A telescopic rod (415) is fixedly connected inside the connecting shell (408), and the end of the telescopic rod (415) is fixedly connected to the side of the cleaning brush (409).

9. A sawtooth plate-fin heat exchanger according to claim 7, characterized in that, The connecting shell (408) has a guide groove (416) inside, and a guide post (417) is fixedly connected to the side of the mounting bracket (1). The guide post (417) is slidably connected to the middle of the guide groove (416).

10. A sawtooth plate-fin heat exchanger according to claim 1, characterized in that, The stabilizing mechanism (5) includes a fixed shell (501), which is fixedly connected to the bottom of the mounting bracket (1). A rack (502) is slidably connected to the middle of the fixed shell (501). A support plate (503) is fixedly connected to the side of the rack (502). A second motor (504) is fixedly connected to the bottom of the fixed shell (501). A gear (505) is fixedly connected to the output end of the second motor (504). The gear (505) meshes with the rack (502). A first support plate (506) is rotatably connected to the side of the fixed shell (501). A second support plate (507) is rotatably connected to the bottom of the support plate (503). The end of the first support plate (506) is rotatably connected to the middle of the second support plate (507).

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