Heat exchanger fin and heat exchanger

Abstract

The utility model discloses a heat exchanger fin and a heat exchanger. The heat exchanger fin comprises a fin body, and the fin body is provided with a heat exchange tube hole used for allowing a heat exchange tube to penetrate through; the turnup is bent with the outer circle of the heat exchange tube hole as a bent edge to form a plurality of fan-shaped turnups with radians, the turnups are distributed in the circumferential direction of the heat exchange tube hole and attached to the outer wall of the heat exchange tube, the inner wall of each turnup and the outer wall of the heat exchange tube are each provided with a welding flux layer, and the root of each turnup is provided with a concave table which is concave inwards. A bent edge which extends into the adjacent concave platform and is clamped with the adjacent concave platform is arranged at the end part of the turned edge; and the supporting and positioning plates are arranged on the fin bodies, located on the outer sides of the turned-over edges and obliquely arranged relative to the fin bodies, and the supporting and positioning plates abut against the fin bodies adjacent to the supporting and positioning plates. The contact area of the fins and the heat exchange tubes is increased, relevance between the adjacent fins is improved, the retention time of air in a fin heat exchange area is prolonged, and therefore the heat exchange efficiency of the heat exchanger fins is improved.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchangers, and in particular to a heat exchanger fin. In addition, the present application also relates to a heat exchanger comprising the above fin. Background Art

[0002] The gas-cooled heat exchanger uses the outside air to exchange heat with the refrigerant, and is composed of heat exchange tubes and fins. The refrigerant circulates in the heat exchange tubes and exchanges heat with the heat exchange tube walls, while the fins exchange heat with the air. The heat exchange tubes and fins are in contact and connected with each other, so the connection method between the heat exchange tubes and the fins directly determines the heat exchange efficiency of the heat exchanger.

[0003] However, the heat transfer resistance between the heat exchanger fins and the heat exchange tubes is currently high, resulting in low heat transfer efficiency, which in turn affects the heat exchange efficiency. At the same time, as the conduction length of the heat exchange tube changes, the cooling effect gradually decreases, and the correlation between adjacent fins is low, so the efficiency of heat exchange between the fins and the outside world becomes low, which in turn affects the heat exchange efficiency. In addition, during the heat exchange process between the air and the fins, due to the absence of a turbulent device, the air stays in the fin heat exchange area for a short time, resulting in low heat exchange efficiency.

[0004] Therefore, in view of the above technical problems, how to improve the heat exchange efficiency of the heat exchanger fins is a technical problem that technical personnel in this field need to solve. Utility Model Content

[0005] The purpose of the present application is to provide a heat exchanger fin, which improves the heat exchange efficiency of the heat exchanger fin by increasing the contact area between the fin and the heat exchange tube, improving the correlation between adjacent fins, and increasing the residence time of air in the heat exchange area of ​​the fin.

[0006] In addition, another object of the present application is to provide a heat exchanger including the above-mentioned fins, which also has the purpose of improving heat exchange efficiency.

[0007] To achieve the above object, the present application provides a heat exchanger fin, comprising:

[0008] A fin body, wherein the fin body is provided with a heat exchange tube hole for passing the heat exchange tube;

[0009] The flange is bent with the outer circle of the heat exchange tube hole as the bending edge to form a plurality of fan-shaped flanges with an arc, the plurality of flanges are distributed along the circumference of the heat exchange tube hole and fit with the outer wall of the heat exchange tube, and the inner wall of the flange and the outer wall of the heat exchange tube are both provided with a solder layer, the root of the flange is provided with an inwardly concave platform, and the end of the flange is provided with a bent edge extending into and clamped with the adjacent concave platform;

[0010] The support and positioning plate is arranged on the fin body, is located outside the flange, and is inclined with respect to the fin body. The support and positioning plate abuts against the adjacent fin body.

[0011] Preferably, a hole is opened and cut on the fin body, and the cut fin body is bent with the outer circle of the heat exchange tube hole as a bending edge to form the flange and the heat exchange tube hole.

[0012] Preferably, the number of the flanges is 3-6 and they are evenly and continuously distributed along the circumference of the heat exchange tube hole, and the diameter of the heat exchange tube hole is 1.8 mm-5.3 mm.

[0013] Preferably, holes are opened, cut and bent on the fin body to form the support positioning plates. The number of the support positioning plates is 2-4 and they are evenly distributed on the outside of the flange along the circumference of the heat exchange tube hole.

[0014] Preferably, a bending portion bent toward the axis of the heat exchange tube hole is provided at the end of the supporting positioning plate, and the bending portion is attached to and abuts against another end face of the fin body adjacent thereto.

[0015] Preferably, a protrusion is provided at the end of the support positioning plate, and the support positioning plates on both sides of the protrusion form a step structure. A groove is provided at the root of the support positioning plate on the other adjacent fin body, and the protrusion extends into the gap between the two grooves, and the step structure extends into the two grooves, so that the two adjacent fin bodies can be stably supported and clamped.

[0016] Preferably, the sheet body of the supporting positioning plate is deformed to form groove-shaped reinforcing ribs, and the reinforcing ribs include vertical reinforcing ribs and corner reinforcing ribs, and the vertical reinforcing ribs and the corner reinforcing ribs are cross-arranged.

[0017] Preferably, a plurality of spoilers are provided on the fin body, and the spoilers are located on the fin body at the periphery of the heat exchange tube holes.

[0018] Preferably, holes are opened and cut on the fin body, and the spoiler is bent to form the spoiler, and the spoiler is in the shape of a rectangular wing, a bridge window, a shutter, or a triangular wing, and is evenly distributed on the fin body.

[0019] A heat exchanger, comprising:

[0020] A heat exchanger fin, which is any one of the above-mentioned heat exchanger fins, comprising a plurality of fin bodies, each of which is provided with at least one row of heat exchange tube holes in the vertical direction, and the heat exchange tube holes on two adjacent rows of the fin bodies are located at the same horizontal height, or the heat exchange tube holes on two adjacent rows of the fin bodies are staggered;

[0021] The heat exchange tube passes through the heat exchange tube hole of the heat exchanger fin and is used for realizing heat exchange with the heat exchanger fin.

[0022] Compared with the above-mentioned background technology, the present application forms a plurality of fan-shaped flanges with an arc by opening and cutting a hole in the center of the fin body, thereby bending the outer diameter of the heat exchange tube hole as the bending edge. The flanges are in contact with the outer wall of the heat exchange tube, with a large contact area and high heat exchange efficiency; and the support positioning plate is offset with the adjacent fin body to achieve heat exchange between two adjacent fins, improve the correlation between the fins, and reduce the influence of the gradual decrease in cooling effect caused by the change in the conduction length of the heat exchange tube; at the same time, by utilizing the inclined setting method of the support positioning plate and the fin body, while having a certain supporting heat transfer effect, the support positioning plate can also be set at a certain angle to the air flow direction, that is, the windward surface of the two support positioning plates on the front side can change the wind direction of the flowing air, so that the air can be more concentrated in front of the heat exchange tube, and the windward surface of the two positioning plates on the rear side can make the air flow to the rear of the heat exchange tube, so that air can circulate around the heat exchange tube, thereby improving the heat exchange efficiency.

[0023] Specifically, the heat exchanger fin includes a fin body, a flange and a support positioning plate. The fin body is provided with a heat exchange tube hole for passing the heat exchange tube; the flange is bent with the outer circle of the heat exchange tube hole as the bending edge, thereby forming a plurality of fan-shaped flanges with an arc, and the plurality of flanges are distributed along the circumference of the heat exchange tube hole and fit with the outer wall of the heat exchange tube, thereby increasing the contact area, improving the heat exchange efficiency, and reducing production waste. The support positioning plate is arranged on the fin body, and is located outside the flange, and is inclined with the fin body. The support positioning plate abuts against the adjacent fin body, thereby forming a support positioning plate with support, heat exchange, and air guidance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the heat exchanger fin structure provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of the supporting and positioning plate and the spoiler structure provided in the embodiment of the present application;

[0027] Figure 3 Another structural schematic diagram of the support and positioning plate provided in the embodiment of the present application;

[0028] Figure 4 A schematic diagram of the structure of the heat exchange tube and the solder layer on the flange provided in an embodiment of the present application;

[0029] Figure 5 A schematic diagram of the concave platform and curved edge structure provided in an embodiment of the present application;

[0030] Figure 6 A schematic diagram of the first solder layer arrangement structure of the heat exchange tube and the connecting elbow provided in an embodiment of the present application;

[0031] Figure 7 A schematic diagram of the second solder layer arrangement structure of the heat exchange tube and the connecting elbow provided in the embodiment of the present application;

[0032] Figure 8 A schematic diagram of the structure of the first distribution mode of heat exchange tube holes provided in the embodiment of the present application;

[0033] Fig. 9 A schematic diagram of the structure of the second distribution mode of heat exchange tube holes provided in the embodiment of the present application;

[0034] Fig.10 This is a schematic diagram of the structure of the multi-row fin body provided in an embodiment of the present application.

[0035] In the figure: 1, fin body 2, flange 21, bent edge 22, concave platform 3, support positioning plate 31, bending part 32, protrusion 33, vertical reinforcement rib 34, corner reinforcement rib 35, groove 4, spoiler 5, heat exchange tube hole 6, heat exchange tube 7, solder layer 8, connecting elbow. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] It should be noted that in this embodiment, the directions or positional relationships indicated by "upper", "lower", "front", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] like Figure 1 As shown, in this embodiment, a heat exchanger fin is provided, which includes a fin body 1, a flange 2 and a supporting positioning plate 3. The fin body 1 is provided with a heat exchange tube hole 5 for passing the heat exchange tube 6 and a flange 2 formed by bending; it should be noted that the flange 2 is cut by opening the fin body 1, that is, the center of the heat exchange tube hole 5 is opened and cut, so that the outer diameter of the heat exchange tube hole 5 is bent as the bending edge to form a plurality of fan-shaped flanges 2 with a certain curvature, and at the same time, a heat exchange tube hole 5 of a certain diameter is formed.

[0040] Please refer to Figure 1 , multiple flanges 2 are bent with the heat exchange tube hole 5, so the multiple flanges 2 are distributed circumferentially along the heat exchange tube hole 5, and can fit with the outer wall of the heat exchange tube 6 at the same time, and the inner wall of the flange and the outer wall of the heat exchange tube 6 are both provided with a solder layer 7, and the solder layer 7 improves the degree of bonding between the two, so that the connection between the flange and the heat exchange tube 6 is more uniform, and the heat exchange performance is further improved; the present application directly bends the flange 2 on the fin body 1, which generates less waste, and the contact area between the flange 2 and the heat exchange tube 6 is large, and the heat exchange efficiency is high.

[0041] The root of the flange 2 is provided with an inwardly concave platform 22, and the end of the flange 2 is provided with a curved edge 21 extending into and engaging with the adjacent concave platform 22. Figure 5 The end of the flange 2 is provided with a bent edge 21 bent outward, and a recessed platform 22 is provided at its root (at the junction with the fin body 1). When two adjacent fin bodies 1 are installed, the bent edge 21 on one fin can be clamped with the recessed platform 22 on the other fin without a supporting positioning plate 3, thereby improving the thermal conductivity and stability of both.

[0042] It should be noted that, for the above solder layer 7, please refer to Figure 4 The solder layer 7 is arranged on the outer wall of the heat exchange tube 6, the fin body 1, and the flange 2, and the solder layer 7 is at least located on the inner wall of the flange 2 and / or the outer wall of the heat exchange tube 6, that is, the solder layer 7 can be arranged only on the inner wall of the flange 2, or only on the outer wall of the heat exchange tube 6, or on both, so as to ensure that the two can be connected through the solder layer 7, improve the degree of combination of the two, and improve the heat exchange performance. Of course, the solder layer 7 can also be arranged on both end surfaces of the fin body 1.

[0043] In addition, the solder layer 7 may also be provided on the connecting elbow 8 between the heat exchange tube 6 and its end, see Figure 6When both ends of the connecting elbow 8 are embedded in the heat exchange tube 6, a solder layer 7 can be provided on the inner wall of the end of the heat exchange tube 6 and the outer wall of the connecting elbow 8 to facilitate the connection between the two, improve the uniformity of the connection between the two, and ensure the sealing effect. Figure 7 If the end of the heat exchange tube 6 is embedded in the connecting elbow 8, a solder layer 7 can be provided on the outer wall of the heat exchange tube 6 and the inner wall of the connecting elbow 8, so as to achieve the purpose of improving the sealing effect.

[0044] The support and positioning plate 3 is arranged on the fin body 1 and is located outside the flange 2. Figure 1 On this basis, the support positioning plate 3 is naturally located at the periphery of the heat exchange tube hole 5. It should be pointed out that the support positioning plate 3 of the present application is tilted to the fin body 1, thereby forming a certain angle, and the end of the support positioning plate 3 can be abutted against the adjacent fin body 1, so as to achieve heat exchange with the adjacent fin body 1 through the performance of the support positioning plate 3 itself, thereby overcoming the problem of reduced cooling effect caused by changes in the conduction length of the heat exchange tube 6.

[0045] In other words, since there is no correlation between the existing fins, and as the conduction length of the heat exchange tube 6 changes, the heat exchange efficiency will gradually decrease, and the heat exchange efficiency between the fins will also be different; that is, the heat exchange efficiency of the fin at the initial end is high, and as the conduction length of the heat exchange tube 6 changes, there is a certain loss of the internal cooling medium, so the heat exchange efficiency of the fin at its position will naturally decrease. However, the present application ensures or tries to make each fin have a certain correlation through heat exchange between adjacent fins, thereby ensuring the heat exchange efficiency of each fin, so as to achieve the effect of improving the overall fin heat exchange efficiency.

[0046] In summary of the above embodiments, the present application forms a plurality of fan-shaped flanges 2 with an arc by opening and cutting a hole in the center of the fin body 1, thereby bending the outer diameter of the heat exchange tube hole 5 as the bending edge, and the flange 2 is in contact with the outer wall of the heat exchange tube 6, with a large contact area and high heat exchange efficiency; and the adjacent fin body 1 is offset by the support positioning plate 3, so as to realize the heat exchange of two adjacent fins, improve the correlation between the fins, and reduce the influence of the gradual decrease in the cooling effect caused by the change in the conduction length of the heat exchange tube 6; at the same time, by using the inclined setting mode of the support positioning plate 3 and the fin body 1, while having a certain supporting heat transfer effect, the support positioning plate 3 can also be set at a certain angle to the air flow direction, that is, the windward surface of the two support positioning plates 3 on the front side can change the wind direction of the flowing air, so that the air can be more concentrated in front of the heat exchange tube 6, and the windward surface of the two support positioning plates 3 on the rear side can make the air flow to the rear of the heat exchange tube 6, so that air flows around the heat exchange tube 6, thereby improving the heat exchange efficiency.

[0047] It should be pointed out that the flange 2 is pointed out above to be opened and cut on the fin body 1, that is, to be opened and cut at the center of the heat exchange tube hole 5, so that a large amount of cutting waste can be saved while forming the flange 2 or the heat exchange tube hole 5, and the flange 2 has a large contact area with the heat exchange tube 6 and a high heat exchange efficiency; and for the specific setting of the flange 2, three to six flanges 2 can be set, and the flanges 2 can be distributed circumferentially along the heat exchange tube hole 5, so as to form a circular heat exchange tube hole 5. Preferably, the diameter of the heat exchange tube hole 5 is 1.8mm-5.3mm, so as to adapt to the setting conditions of the microtube heat exchanger.

[0048] As for micro-tube heat exchangers, the economic and social benefits brought by the refinement of the tube diameter to 5mm are already very significant. If the tube diameter is further reduced to 2-4mm and below, the cost and volume advantages will be further expanded, and the industry competitiveness of tube-fin heat exchangers will become more prominent. However, from the perspective of theoretical research, from 5mm to 4mm, there seems to be only a slight difference of 1mm, but it belongs to two completely different categories of traditional pipes and small pipes. A large number of studies at home and abroad have confirmed that the hydraulic diameter (tube inner diameter) of 3mm is the dividing point between traditional pipes and small pipe diameters. Therefore, from the academic classification definition, 5mm still belongs to traditional large pipes, while the outer diameter ≤4mm belongs to small pipe diameters. There are obvious differences in the boiling heat transfer characteristics of the two. This requires that the structural design and simulation of 4mm tube-fin heat exchangers first need to establish a corresponding theoretical model to ensure the design accuracy of small pipe diameter heat exchangers.

[0049] However, the tube diameter refinement of the tube-fin structure is not without limit. A large number of studies have shown that when the outer diameter of the copper tube is reduced to 2mm or less, due to the limitations of existing household appliance standards, the flow path design and confluence structure will inevitably become more and more complicated, resulting in an exponential increase in material costs and processing difficulties, and commercial promotion will be completely lost. Based on the above analysis, considering the commercial promotion (cost), the necessity of theoretical research, and manufacturability, the outer diameter of 3-4mm is very likely to be the limit of the tube-fin heat exchanger. Therefore, based on the above embodiments, the diameter of the heat exchange tube hole 5 that can be achieved in theory is used as an example for limitation. Of course, with the development of science and technology, there may be technical solutions beyond the above range, and no excessive restrictions will be made here.

[0050] Please refer to Figure 1 and Figure 3In the present application, holes are opened and cut on the fin body 1, and the support and positioning plates 3 are bent to form the support and positioning plates 3. The number of the support and positioning plates 3 is two to four, and they are evenly distributed on the outside of the flange 2 along the circumference of the heat exchange tube hole 5. It should be noted that the support and positioning plates 3 have a heat transfer effect on the one hand, that is, heat exchange with the adjacent fin bodies 1; on the other hand, they have a wind guiding effect, that is, through the inclined setting of the support and positioning plates 3 and the fin body 1, a certain wind guiding effect is achieved, the contact efficiency between the air and the heat exchange tube 6 is increased, so as to improve the heat exchange efficiency of the fin body 1.

[0051] In addition, please refer to Figure 2 The end of the support and positioning plate 3 of the present application is provided with a bending portion 31 bent toward the axis of the heat exchange tube hole 5, and the bending portion 31 can be attached to and abutted against the end face of another adjacent fin body 1; it should be noted that the bending portion can be parallel to the fin body 1, thereby increasing the contact area with the adjacent fin body 1 as much as possible, thereby improving heat exchange efficiency. Of course, the bending direction of the end of the support and positioning plate 3 can also be oriented in other directions, including but not limited to bending toward the axis direction of the heat exchange tube hole 5.

[0052] For another arrangement of the support positioning plate 3, please refer to Figure 3 A protrusion 32 is provided at the end of the supporting positioning plate 3, and the supporting positioning plates 3 on both sides of the protrusion form a step structure. A groove 35 is provided at the root of the supporting positioning plate 3 on the other adjacent fin body 1. The protrusion 32 extends into the gap between the two grooves, and the step structure extends into the two grooves, so that the two adjacent fin bodies 1 can be stably abutted and clamped, and when abutting, the step structure can fit with the groove 35, thereby increasing the contact area of ​​the supporting positioning plate 3 and improving the heat exchange efficiency.

[0053] In order to improve the stability of the support positioning plate 3, the sheet body of the support positioning plate 3 can be bent and deformed to form groove-shaped reinforcement ribs; the reinforcement ribs include vertical reinforcement ribs 33 and corner reinforcement ribs 34, and the specific technical scheme of the deformation will not be described here one by one, and the prior art can be referred to. On this basis, the deformed support positioning plate 3 can increase its own heat transfer area and improve the heat exchange efficiency on the one hand; on the other hand, it can improve the support strength of the support positioning plate 3 to ensure stable contact with the other fin. Similarly, the effect of the corner reinforcement rib 34 is the same as that of the vertical reinforcement rib 33, which can improve the heat exchange efficiency and support strength at the bend. At the same time, the vertical reinforcement rib 33 and the corner reinforcement rib 34 are cross-arranged, so as to be used together to improve the heat exchange efficiency and support strength of the support positioning plate 3.

[0054] It should be noted that the fin body 1 of the present application is also provided with a plurality of spoilers 4, which are located on the fin body 1 at the periphery of the heat exchange tube hole 5. In order to increase the residence time of the air in the fin body 1, holes can be opened and cut on the fin body 1, and the spoilers 4 can be formed by bending. Figure 1 and Figure 2 The spoiler 4 is in the shape of a rectangular wing, a bridge window, a shutter, or a triangular wing, and is evenly distributed on the fin body 1, thereby improving the spoiler effect.

[0055] As for the above-mentioned rectangular wings, bridge windows, louvers, and triangular wings, the rectangular wings and triangular wings are rectangular spoilers of rectangular and triangular structures, while the bridge type is an arched bridge structure, thereby increasing the contact area between the air and the fin body 1, and increasing the residence time of the air in the fin body 1. Similarly, the louvers can refer to the existing louver structure, and can also increase the contact area between the air and the fin body 1 and increase the residence time of the air in the fin body 1. It should be noted that the technical solutions for increasing the contact area between the air and the fin body 1 all fall within the protection scope of this application and will not be described in detail here.

[0056] In addition, the present application also provides a heat exchanger, which includes a heat exchanger fin, a heat exchange tube 6 and a header. The heat exchanger fin is any of the heat exchanger fins described above. The heat exchanger includes a plurality of fin bodies 1. Each fin body 1 is provided with at least one row of heat exchange tube holes 5 in the vertical direction. The heat exchange tube holes 5 on two adjacent rows of fin bodies 1 are located at the same horizontal height. Please refer to Figure 8 or the heat exchange tube holes 5 on the two adjacent rows of fin bodies 1 are arranged in a staggered manner, please refer to Fig. 9 ; When there are multiple rows of fin bodies 1, please refer to Fig.10 The heat exchange tube 6 passes through the heat exchange tube hole 5 of the heat exchanger fin to achieve heat exchange with the heat exchanger fin; and the header is used to receive the cooling medium of the heat exchange tube 6, so as to achieve circulation flow between multiple heat exchange tubes 6. Of course, the heat exchanger also includes other necessary components, or components with equivalent effects or functions, which will not be repeated here, please refer to the prior art.

[0057] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0058] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A heat exchanger fin, characterized in that: include: A fin body (1), wherein the fin body (1) is provided with a heat exchange tube hole (5) for passing a heat exchange tube (6); The flange (2) is bent with the outer circle of the heat exchange tube hole (5) as the bending edge to form a plurality of fan-shaped flanges (2) with an arc, the plurality of flanges (2) are distributed along the circumference of the heat exchange tube hole (5) and are in contact with the outer wall of the heat exchange tube (6), and the inner wall of the flange (2) and the outer wall of the heat exchange tube (6) are both provided with a solder layer (7), the root of the flange (2) is provided with an inwardly recessed concave platform (22), and the end of the flange (2) is provided with a bent edge (21) extending into and clamped with an adjacent concave platform (22); The support positioning plate (3) is arranged on the fin body (1) and is located outside the flange (2) and is arranged obliquely with the fin body (1). The support positioning plate (3) abuts against the adjacent fin body (1).

2. The heat exchanger fin according to claim 1, characterized in that: A hole is opened and cut on the fin body (1), and the cut fin body (1) is bent with the outer circle of the heat exchange tube hole (5) as a bending edge to form the flange (2) and the heat exchange tube hole (5).

3. The heat exchanger fin according to claim 2, characterized in that: The number of the flanges (2) is 3-6 and they are evenly and continuously distributed along the circumference of the heat exchange tube hole (5); the diameter of the heat exchange tube hole (5) is 1.8 mm-5.3 mm.

4. The heat exchanger fin according to claim 1, characterized in that: A hole is opened and cut on the fin body (1), and then bent to form the support positioning plate (3). The number of the support positioning plates (3) is 2-4 and they are evenly distributed on the outside of the flange (2) along the circumference of the heat exchange tube hole (5).

5. The heat exchanger fin according to claim 4, characterized in that: The end of the supporting positioning plate (3) is provided with a bent portion (31) bent toward the axis of the heat exchange tube hole (5), and the bent portion (31) is in contact with and abuts against another end surface of the fin body (1) adjacent thereto.

6. The heat exchanger fin according to claim 4, characterized in that: The end of the support positioning plate (3) is provided with a protrusion (32), and the support positioning plate (3) on both sides of the protrusion (32) forms a step structure. The root of the support positioning plate (3) on the other adjacent fin body (1) is provided with a groove (35), and the protrusion (32) extends into the gap between the two grooves (35), and the step structure extends into the two grooves (35), so that the two adjacent fin bodies (1) are stably supported and clamped.

7. The heat exchanger fin according to claim 5 or 6, characterized in that: The sheet body of the supporting positioning plate (3) is deformed to form groove-shaped reinforcing ribs, wherein the reinforcing ribs include vertical reinforcing ribs (33) and corner reinforcing ribs (34), and the vertical reinforcing ribs (33) and the corner reinforcing ribs (34) are arranged crosswise.

8. The heat exchanger fin according to claim 1, characterized in that: The fin body (1) is also provided with a plurality of spoilers (4), and the spoilers (4) are located on the fin body (1) at the periphery of the heat exchange tube hole (5).

9. The heat exchanger fin according to claim 8, characterized in that: The fin body (1) is opened with holes, cut, and bent to form the spoiler (4). The spoiler (4) is in the shape of a rectangular wing, a bridge window, a shutter, or a triangular wing, and is evenly distributed on the fin body (1).

10. A heat exchanger, characterized in that: include: A heat exchanger fin, a heat exchanger fin according to any one of claims 1 to 9, wherein the heat exchanger fin comprises a plurality of fin bodies (1), each of the fin bodies (1) is provided with at least one row of heat exchange tube holes (5) in a vertical direction, the heat exchange tube holes (5) on two adjacent rows of the fin bodies (1) are located at the same horizontal height, or the heat exchange tube holes (5) on two adjacent rows of the fin bodies (1) are staggered; A heat exchange tube (6) passes through the heat exchange tube hole (5) of the heat exchanger fin and is used to achieve heat exchange with the heat exchanger fin.

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