A sealing strip for a plate-fin heat exchanger

Abstract

This utility model provides a sealing strip for a plate-fin heat exchanger, relating to the field of heat exchangers. It includes a sealing strip body extending in a front-to-back direction; the sealing strip body has an inner cavity; and it also includes a flow-dividing assembly, which includes an upper flow-dividing plate, a lower flow-dividing plate, a flow-dividing baffle, and a partition plate. The edges of the upper and lower flow-dividing plates are fixed to the front and rear side walls of the inner cavity; the flow-dividing baffle seals the left ends of the upper and lower flow-dividing plates; the partition plate seals the left side wall of the inner cavity and the left surface of the flow-dividing baffle; the partition plate divides the gap between the flow-dividing baffle and the inner cavity into an upper flow-dividing space and a lower flow-dividing space; a first through-hole of the flow-dividing baffle connects to the external space and the upper flow-dividing space; a second through-hole of the flow-dividing baffle connects to the external space and the lower flow-dividing space. This utility model can solve the problem in the prior art where, if the coolant flows for a short time in the water-cooling channel, the coolant cannot fully contact the fins, thus reducing the heat exchange efficiency of the plate-fin heat exchanger.

Description

Technical Field

[0001] This utility model relates to the field of heat exchangers, and in particular to a sealing strip for plate-fin heat exchangers. Background Technology

[0002] Plate-fin heat exchangers are efficient and compact heat exchange devices, typically composed of baffles, fins, seals, and flow dividers. A specific structure is illustrated in the plate-fin core of an aluminum plate-fin heat exchanger disclosed in Chinese Patent Application No. 202322480619.4. This core includes heat dissipation channels disposed on a core cover plate, composed of multiple spaced composite plates forming staggered air-cooling and water-cooling channels between adjacent composite plates; outer fins disposed in the air-cooling channels, with short seals symmetrically arranged on both sides of the outer fins; and inner fins disposed in the water-cooling channels, with long seals symmetrically arranged on both sides of the inner fins.

[0003] The structure of the seal is as disclosed in Chinese Patent Application No. 201320877909.6, which discloses a heat exchanger seal. The seal body includes an upper strip arranged horizontally at the top, a connecting strip arranged vertically in the middle, and a lower strip arranged horizontally at the bottom. The connecting strip has slots on both sides, and the seal body is in the shape of an I-beam.

[0004] When the above-mentioned seal is used in a plate-fin heat exchanger, coolant flows in the water-cooled channel used for heat exchange with the air-cooled channel. The coolant flows smoothly along the extension direction of the seal and transfers heat through the fins. If the coolant flows in the water-cooled channel for a short time, the coolant cannot fully contact the fins, thereby reducing the heat exchange efficiency of the plate-fin heat exchanger. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a sealing strip for plate-fin heat exchangers, which solves the problem that in existing technologies, when the coolant flows smoothly along the extension direction of the sealing strip, if the coolant's flow time in the water-cooling channel is short, the coolant cannot fully contact the fins, thus reducing the heat exchange efficiency of the plate-fin heat exchanger; thereby improving the heat exchange efficiency of the plate-fin heat exchanger.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a sealing strip for a plate-fin heat exchanger, comprising a sealing strip body; the sealing strip body extends in a front-to-back direction; the sealing strip body has an inner cavity; an opening is provided on the right side of the sealing strip body; the opening communicates with the inner cavity;

[0008] It also includes a flow-diverting assembly; the flow-diverting assembly is located within the inner cavity; the flow-diverting assembly includes an upper flow-diverting plate, a lower flow-diverting plate, a flow-diverting baffle, and a partition plate; the upper flow-diverting plate and the lower flow-diverting plate are horizontally arranged; the edge of the upper flow-diverting plate is fixed to the front and rear side walls of the inner cavity; the edge of the lower flow-diverting plate is fixed to the front and rear side walls of the inner cavity; the flow-diverting baffle is vertically arranged; the right side of the flow-diverting baffle is sealingly connected to the left end of the upper flow-diverting plate and the left end of the lower flow-diverting plate; the partition plate is horizontally arranged; the partition plate is sealingly connected to the left side wall of the inner cavity and the left side of the flow-diverting baffle.

[0009] The gap between the diversion baffle and the left side wall of the inner cavity is used as the diversion space; the partition plate divides the diversion space into an upper diversion space and a lower diversion space; the diversion baffle is provided with a plurality of first through holes and a plurality of second through holes; the first through holes connect the external space and the upper diversion space; the second through holes connect the external space and the lower diversion space.

[0010] The sealing strip for the plate-fin heat exchanger provided by this utility model preferably includes a flow-dividing assembly further comprising a flow-disrupting column; the flow-disrupting column is vertically arranged; the flow-disrupting column is located between the upper flow-dividing plate and the lower flow-dividing plate; the flow-disrupting column connects the upper flow-dividing plate and the lower flow-dividing plate; the cross-section of the flow-disrupting column is triangular; the edges of the flow-disrupting column face the first through hole or the second through hole.

[0011] The sealing strip for the plate-fin heat exchanger provided by this utility model preferably has the vertical cross-section of the first through hole and the vertical cross-section of the second through hole gradually decreasing from left to right.

[0012] The above technical solution has the following advantages or beneficial effects:

[0013] The sealing strip for plate-fin heat exchangers provided by this utility model includes a sealing strip body. For ease of explanation of the structure of the sealing strip body, the sealing strip body extends in the front-to-back direction. In order to reduce the production cost of the sealing strip body, the sealing strip body has an inner cavity, thereby reducing the raw material loss used to prepare the sealing strip body and reducing the weight of the sealing strip body, thereby reducing the overall weight of the heat exchanger core and facilitating the assembly and transportation of the heat exchanger. Furthermore, an opening is provided on the right side of the sealing strip body. The opening communicates with the inner cavity. When the coolant flows from the channel formed between the two sealing strip bodies, the coolant can enter the inner cavity for buffering, reducing the load of the coolant on the inner fin layer and effectively improving the operational stability of the heat exchanger core.

[0014] Because a velocity boundary layer is formed when the coolant comes into contact with the upper or lower baffle, the coolant near the upper and lower baffles has a lower flow velocity, while the coolant in the middle has a higher flow velocity. This allows the coolant near the baffle to make full contact with the fins or baffles, resulting in higher heat exchange efficiency for the coolant near the baffle compared to the coolant in the middle. To further improve the overall heat exchange efficiency of the plate-fin heat exchanger, a flow distribution assembly is also included. This assembly is located inside the cavity and is used to distribute the coolant flowing into the cavity from the opening. Specifically, the flow distribution assembly includes an upper flow distribution plate, a lower flow distribution plate, a flow distribution baffle, and a partition plate. The upper and lower flow distribution plates are horizontally arranged, with the upper flow distribution plate... The edge of the baffle plate is fixed to the front and rear side walls of the inner cavity, and the edge of the lower baffle plate is also fixed to the front and rear side walls of the inner cavity. This divides the coolant entering the inner cavity from the opening into three parts: upper, middle, and lower. Within the inner fin layer, the coolant near the upper baffle plate enters the gap between the upper baffle plate and the upper side wall of the inner cavity; the coolant near the lower baffle plate enters the gap between the lower baffle plate and the lower side wall of the inner cavity; and the coolant in the middle enters the gap between the upper and lower baffle plates. It should be noted that the coolant near the upper or lower baffle plate has a lower flow rate and is more likely to enter the gap between the upper or lower baffle plate and the side wall of the cavity. Furthermore, the baffle plate is set vertically, and the right side of the baffle plate is sealed to the upper baffle plate. The left ends of the upper and lower manifolds allow the main coolant flow in the middle to be introduced between the upper and lower manifolds and blocked by the manifold baffle, causing this portion of the coolant to flow along the extension direction of the manifold baffle. Furthermore, the partition plate is horizontally positioned, sealingly connecting the left side wall of the inner cavity and the left side of the manifold baffle. If the gap between the manifold baffle and the left side wall of the inner cavity is considered the manifold space, the partition plate divides the manifold space into an upper manifold space and a lower manifold space. The upper manifold space stores coolant from between the upper manifold and the upper side wall of the inner cavity, while the lower manifold space stores coolant from between the lower manifold and the lower side wall of the inner cavity. The spaces are not interconnected; the flow divider baffle has several first through holes and several second through holes. The first through holes connect the external space and the upper flow divider space to discharge the coolant in the upper flow divider space. The second through holes connect the external space and the lower flow divider space to discharge the coolant in the lower flow divider space. Since the coolant near the baffle has a lower flow velocity and can fully contact the baffle or fins, by transporting the coolant that was originally near the baffle to the middle part of the inner fin layer, the coolant that was originally located in the middle part of the inner fin layer is brought closer to the baffle, so that the coolant in the inner fin layer is circulated as a whole, which indirectly reduces the flow velocity of the coolant that was originally located in the middle part of the inner fin layer, thereby improving the overall heat exchange efficiency of the coolant.Meanwhile, the coolant discharged from the first and second through holes merges with the coolant outside the diversion space. The collision of the two coolant streams flowing perpendicularly causes turbulence in the middle part of the inner fin layer. Under turbulent conditions, the coolant continuously collides and contacts the fins, reducing the heat transfer resistance and improving the heat exchange efficiency between the coolant and the fins. Furthermore, under turbulent conditions, the coolant alternately contacts the fins in some areas. Compared to the coolant flowing along a fixed path, this reduces the dead angle of contact between the coolant and the fins, indirectly increasing the contact area between the coolant and the fins, thereby improving the heat exchange efficiency per unit time.

[0015] In existing technology, the coolant flows smoothly along the extension direction of the seal. However, if the coolant's flow time within the water-cooling channel is short, it cannot fully contact the fins, thus reducing the heat exchange efficiency of the plate-fin heat exchanger. The plate-fin heat exchanger seal provided by this invention divides the coolant into three parts (upper, middle, and lower) by setting an upper and lower flow divider. A flow divider baffle and a partition plate separate the upper, middle, and lower layers of coolant. Several first and second through holes are provided on the flow divider baffle, allowing the upper and lower coolant to flow into the middle layer, creating overall circulation of the coolant within the inner fin layer and generating turbulence in the middle layer, thereby improving the overall heat exchange efficiency of the coolant and increasing the heat exchange efficiency per unit time. Attached Figure Description

[0016] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0017] Figure 1 This is a three-dimensional structural diagram of the sealing strip for the plate-fin heat exchanger provided in Embodiment 1 of this utility model.

[0018] Figure 2 This is a right-side structural schematic diagram of the sealing strip for a plate-fin heat exchanger provided in Embodiment 1 of this utility model.

[0019] Figure 3 This is a schematic diagram of the main view cross-sectional structure of the sealing strip for the plate-fin heat exchanger provided in Embodiment 1 of this utility model. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0021] Example 1:

[0022] like Figures 1-3As shown, the sealing strip for a plate-fin heat exchanger provided in Embodiment 1 of this utility model includes a sealing strip body 1; the sealing strip body 1 extends in the front-back direction; the sealing strip body 1 is provided with an inner cavity 11; an opening 12 is provided on the right side of the sealing strip body 1; the opening 12 communicates with the inner cavity 11.

[0023] It also includes a flow divider assembly 2; the flow divider assembly 2 is located inside the inner cavity 11; the flow divider assembly 2 includes an upper flow divider 21, a lower flow divider 22, a flow divider baffle 23, and a partition plate 24; the upper flow divider 21 and the lower flow divider 22 are horizontally arranged; the edge of the upper flow divider 21 is fixed to the front and rear side walls of the inner cavity 11; the edge of the lower flow divider 22 is fixed to the front and rear side walls of the inner cavity 11; the flow divider baffle 23 is vertically arranged; the right plate surface of the flow divider baffle 23 is sealed to the left end of the upper flow divider 21 and the left end of the lower flow divider 22; the partition plate 24 is horizontally arranged; the partition plate 24 is sealed to the left side wall of the inner cavity 11 and the left plate surface of the flow divider baffle 23.

[0024] The gap between the diversion baffle 23 and the left side wall of the inner cavity 11 is used as the diversion space 110; the partition plate 24 divides the diversion space 110 into an upper diversion space 1101 and a lower diversion space 1102; the diversion baffle 23 is provided with a number of first through holes 231 and a number of second through holes 232; the first through holes 231 connect the external space and the upper diversion space 1101; the second through holes 232 connect the external space and the lower diversion space 1102.

[0025] When using the sealing strip for the plate-fin heat exchanger provided in Embodiment 1 of this utility model, the sealing strip body 1 is placed between two partitions, which are horizontally arranged. The upper partition is used as the upper partition, and the lower partition is used as the lower partition, so that the upper and lower surfaces of the sealing strip body 1 are in close contact with the lower surface of the upper partition and the upper surface of the lower partition, respectively. The two sealing strip bodies 1 and the two partitions form a channel for the flow of coolant, namely the inner fin layer. Specifically, the openings 12 of the two sealing strip bodies 1 are arranged opposite each other in the inner fin layer. The inner fin layer and the outer fin layer are alternately arranged to form the heat exchanger core, and the stacked heat exchanger core is transferred to a brazing furnace for heating, so that the partitions, sealing strips and fins are welded and fixed as one unit. When the coolant enters the inner fin layer, the coolant is located between the two sealing strip bodies 1, and the coolant enters or leaves the inner cavity 11 from the opening 12. Specifically, the coolant is divided into three parts and The seal body 1 contacts the inner cavity 11. A portion of the coolant enters the gap between the upper distributor plate 21 and the upper side wall of the inner cavity 11, a portion of the coolant enters the gap between the lower distributor plate 22 and the lower side wall of the inner cavity 11, and the remaining coolant enters the gap between the upper distributor plate 21 and the lower distributor plate 22. The coolant enters the upper distribution space 1101 from the gap between the upper distributor plate 21 and the upper side wall of the inner cavity 11, and flows through the first through hole 231 into the gap between the upper distributor plate 21 and the lower distributor plate 22. The coolant enters the lower distribution space 1102 from the gap between the lower distributor plate 22 and the lower side wall of the inner cavity 11, and flows through the second through hole 232 into the gap between the upper distributor plate 21 and the lower distributor plate 22. The coolant entering the gap between the upper distributor plate 21 and the lower distributor plate 22 from the upper distribution space 1101 and the lower distribution space 1102 merges with the coolant entering the gap between the upper distributor plate 21 and the lower distributor plate 22 from the external space.

[0026] The sealing strip for a plate-fin heat exchanger provided in Embodiment 1 of this utility model includes a sealing strip body 1. To facilitate the explanation of the structure of the sealing strip body 1, the sealing strip body 1 extends in the front-to-back direction. In order to reduce the production cost of the sealing strip body 1, the sealing strip body 1 has an inner cavity 11, thereby reducing the raw material loss used to prepare the sealing strip body 1 and reducing the weight of the sealing strip body 1, thereby reducing the overall weight of the heat exchanger core and facilitating the assembly and transportation of the heat exchanger. Furthermore, an opening 12 is provided on the right side of the sealing strip body 1. The opening 12 communicates with the inner cavity 11. When the coolant flows from the channel formed between the two sealing strip bodies 1, the coolant can enter the inner cavity 11 for buffering, reducing the load of the coolant on the inner fin layer and effectively improving the stability of the heat exchanger core.

[0027] Because a velocity boundary layer is formed when the coolant comes into contact with the upper or lower baffle, the coolant near the upper and lower baffles has a lower flow velocity, while the coolant in the middle has a higher flow velocity. This allows the coolant near the baffle to make full contact with the fins or baffles, resulting in higher heat exchange efficiency for the coolant near the baffle compared to the coolant in the middle. To further improve the overall heat exchange efficiency of the plate-fin heat exchanger, a flow distribution assembly 2 is also included. The flow distribution assembly 2 is located inside the inner cavity 11 and is used to distribute the coolant flowing into the inner cavity 11 from the opening 12. Specifically, the flow distribution assembly 2 includes an upper flow distribution plate 21. The system includes a lower flow divider 22, a flow divider baffle 23, and a partition plate 24. The upper flow divider 21 and lower flow divider 22 are horizontally arranged. The edge of the upper flow divider 21 is fixed to the front and rear side walls of the inner cavity 11, and the edge of the lower flow divider 22 is also fixed to the front and rear side walls of the inner cavity 11. This divides the coolant entering the inner cavity 11 from the opening 12 into three parts: upper, middle, and lower. Within the inner fin layer, the coolant near the upper partition plate enters the gap between the upper flow divider 21 and the upper side wall of the inner cavity 11; the coolant near the lower partition plate enters the gap between the lower flow divider 22 and the lower side wall of the inner cavity 11; and the coolant in the middle enters the gap between the upper flow divider 21 and the lower side wall of the inner cavity 11. The gap between the lower distributor plates 22; it should be noted that the coolant near the upper or lower partition plate has a lower flow rate and is more likely to enter the gap between the upper distributor plate 21 or lower distributor plate 22 and the side wall of the cavity 11; further, the distributor baffle 23 is set vertically, and the right plate surface of the distributor baffle 23 is sealed to the left end of the upper distributor plate 21 and the left end of the lower distributor plate 22, so that the mainstream coolant in the middle can be introduced between the upper distributor plate 21 and the lower distributor plate 22 and blocked by the distributor baffle 23, causing this part of the coolant to flow along the extension direction of the distributor baffle 23; further still, the partition plate 24 The partition plate 24 is horizontally positioned and seals the left side wall of the inner cavity 11 and the left side of the diversion baffle 23. If the gap between the diversion baffle 23 and the left side wall of the inner cavity 11 is taken as the diversion space 110, the partition plate 24 divides the diversion space 110 into an upper diversion space 1101 and a lower diversion space 1102. The upper diversion space 1101 is used to store coolant from between the upper diversion plate 21 and the upper side wall of the inner cavity 11, and the lower diversion space 1102 is used to store coolant from between the lower diversion plate 21 and the lower side wall of the inner cavity 11. The upper diversion space 1101 and the lower diversion space 1102 are not connected to each other.The flow divider baffle 23 has several first through holes 231 and several second through holes 232. The first through holes 231 connect the external space and the upper flow divider space 1101, discharging the coolant in the upper flow divider space 1101. The second through holes 232 connect the external space and the lower flow divider space 1102, discharging the coolant in the lower flow divider space 1102. Because the coolant near the baffle has a lower flow rate and can fully contact the baffle or fins, by transporting the coolant originally near the baffle to the middle part of the inner fin layer, the coolant originally located in the middle part of the inner fin layer is brought closer to the baffle, causing the coolant in the inner fin layer to circulate as a whole, indirectly reducing the coolant originally located in the middle part of the inner fin layer. The flow rate of the coolant improves the overall heat exchange efficiency of the coolant. At the same time, the coolant discharged from the first through hole 231 and the second through hole 232 merges with the coolant outside the diversion space 110. The collision of the two coolant streams with perpendicular flow directions causes the coolant in the middle part of the inner fin layer to form turbulence. Under the turbulent state, the coolant continuously collides and contacts the fins, which reduces the heat transfer resistance and improves the heat exchange efficiency between the coolant and the fins. In addition, under the turbulent state, the coolant alternately contacts the fins in some areas. Compared with the coolant flowing along a fixed path, this reduces the dead angle of contact between the coolant and the fins, which indirectly increases the contact area between the coolant and the fins, thereby improving the heat exchange efficiency per unit time.

[0028] In existing technology, the coolant flows smoothly along the extension direction of the seal during use. However, if the coolant's flow time in the water-cooling channel is short, it cannot fully contact the fins, thus reducing the heat exchange efficiency of the plate-fin heat exchanger. The plate-fin heat exchanger seal provided in Embodiment 1 of this utility model divides the coolant into three parts (upper, middle, and lower) by setting an upper flow divider 21 and a lower flow divider 22. The upper, middle, and lower coolant layers are separated by a flow divider baffle 23 and a partition plate 24. Several first through holes 231 and several second through holes 232 are provided on the flow divider baffle 23 to discharge the upper and lower coolant layers into the middle coolant layer, causing the coolant in the inner fin layer to circulate as a whole and creating turbulence in the middle coolant layer of the inner fin layer, thereby improving the overall heat exchange efficiency of the coolant and increasing the heat exchange efficiency per unit time.

[0029] like Figures 1-3As shown, the sealing strip for the plate-fin heat exchanger provided in Embodiment 1 of this utility model is preferably further enhanced by the flow-dividing assembly 2 including a few turbulence columns 25 to further enhance the turbulence effect of the coolant in the middle part of the inner fin layer. The turbulence columns 25 are vertically arranged and located between the upper flow-dividing plate 21 and the lower flow-dividing plate 22. The turbulence columns 25 connect the upper flow-dividing plate 21 and the lower flow-dividing plate 22. The cross-section of the turbulence columns 25 is triangular, and the edges of the turbulence columns 25 face the first through hole 231 or the second through hole 232. When the coolant is discharged from the first through hole 231 and the second through hole 232, the coolant is divided by the edges of the turbulence columns 25, causing the coolant to be divided into multiple streams that converge with the coolant outside the flow-dividing space 110 to form turbulence, further improving the turbulence effect.

[0030] like Figure 3 As shown, in the plate-fin heat exchanger sealing strip provided in Embodiment 1 of this utility model, preferably, the vertical cross-section of the first through hole 231 and the vertical cross-section of the second through hole 232 gradually decrease from left to right. When the coolant passes through the first through hole 231 or the second through hole 232, the speed of coolant discharge gradually increases due to the gradual reduction of the through hole cross-section, enabling it to have greater kinetic energy to merge with the coolant outside the diversion space 110 to form turbulence, further improving the turbulence effect. At the same time, through the structural design of the through hole having a large cross-section at the end of the diversion space 110 and a small cross-section at the outer end, it can help balance the pressure difference at both ends, so that the coolant in the diversion space 110 can be continuously discharged.

[0031] In summary, the sealing strip for plate-fin heat exchangers provided by this utility model can solve the problem in the prior art where, during use, the coolant flows smoothly along the extension direction of the sealing strip, but if the coolant's flow time in the water-cooling channel is short, the coolant cannot fully contact the fins, thus reducing the heat exchange efficiency of the plate-fin heat exchanger; thereby improving the heat exchange efficiency of the plate-fin heat exchanger.

[0032] Those skilled in the art should understand that variations can be implemented by combining existing technology and the above embodiments, and will not be elaborated here. Such variations do not affect the substantive content of this utility model, and will not be elaborated here.

[0033] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of this utility model, or equivalent embodiments with equivalent changes, do not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A seal for a plate-fin heat exchanger, characterized by Includes a seal body; the seal body extends in a front-to-back direction; the seal body has an inner cavity; the right side of the seal body has an opening; the opening communicates with the inner cavity; It also includes a flow-diverting assembly; the flow-diverting assembly is located within the inner cavity; the flow-diverting assembly includes an upper flow-diverting plate, a lower flow-diverting plate, a flow-diverting baffle, and a partition plate; the upper flow-diverting plate and the lower flow-diverting plate are horizontally arranged; the edge of the upper flow-diverting plate is fixed to the front and rear side walls of the inner cavity; the edge of the lower flow-diverting plate is fixed to the front and rear side walls of the inner cavity; the flow-diverting baffle is vertically arranged; the right side of the flow-diverting baffle is sealingly connected to the left end of the upper flow-diverting plate and the left end of the lower flow-diverting plate; the partition plate is horizontally arranged; the partition plate is sealingly connected to the left side wall of the inner cavity and the left side of the flow-diverting baffle. The gap between the diversion baffle and the left side wall of the inner cavity is used as the diversion space; the partition plate divides the diversion space into an upper diversion space and a lower diversion space; the diversion baffle is provided with a plurality of first through holes and a plurality of second through holes; the first through holes connect the external space and the upper diversion space; the second through holes connect the external space and the lower diversion space.

2. The gasket for a plate-fin heat exchanger according to claim 1, wherein The diversion assembly further includes a flow-disrupting column; the flow-disrupting column is vertically arranged; the flow-disrupting column is located between the upper diversion plate and the lower diversion plate; the flow-disrupting column connects the upper diversion plate and the lower diversion plate; the cross-section of the flow-disrupting column is triangular; the edge of the flow-disrupting column faces the first through hole or the second through hole.

3. The gasket for a plate-fin heat exchanger according to claim 1, wherein The vertical cross-sections of the first through hole and the second through hole gradually decrease from left to right.

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