Fin for heat exchanger, fin machining method and equipment and heat exchanger

Abstract

The invention relates to the field of heat exchangers, and provides a fin for a heat exchanger, a fin machining method and equipment and the heat exchanger, the fin for the heat exchanger comprises a fixing part and a fin part, the fixing part is provided with a plurality of fin grooves, and the two sides of each fin groove are provided with a first extrusion deformation area and a second extrusion deformation area; when the fin parts are partially inserted into the fin grooves and abut against the bottoms of the fin grooves, the first extrusion deformation areas and the second extrusion deformation areas extrude the fin parts under the action of external force, so that the fin parts make close contact with the bottoms of the fin grooves, the first extrusion deformation areas and the second extrusion deformation areas. In this way, compared with the prior art, the heat conduction efficiency is greatly improved, the heat transfer efficiency is higher, the energy-saving effect is achieved, in addition, the fin part and the fixed part are manufactured separately, the height of the fin part is not limited by the extrusion technology any more, the height of the fin can be greatly increased, the heat exchange area is increased, the heat exchange efficiency is improved, and then energy consumption is reduced.

Description

Technical Field

[0001] The present application relates to the field of heat exchangers, and in particular to a fin for a heat exchanger, a fin processing method, a device and a heat exchanger. Background Art

[0002] In order to improve the heat transfer efficiency on the heat exchanger, the most common way is to increase the heat transfer area. For example, adding fins can greatly increase the heat transfer area. The fins are usually extended vertically outward relative to the pipe surface, and such a structure is difficult to directly process and form. Some metals have good ductility but low strength, while some metals have high strength but poor plastic deformation ability or are difficult to process and form. Therefore, bimetallic fin structures are usually used in heat exchangers. However, there are still some technical problems in the formation of fins. If the fins are directly cold-extruded outside the aluminum tube, the height of the fins will be limited by the cold extrusion process. Usually, the fin height H is limited to less than 30 mm.

[0003] like Figure 1 As shown, during the cold extrusion process, under the action of the extrusion forming tool 9, due to the influence of metal flow, the metal at the forming position of the fin 1 will flow toward the fin 1, so that a gap 20 exists between the metal and the base tube 2, which greatly reduces the heat conduction efficiency.

[0004] The Chinese patent number "CN 101861506 B" and the patent name "Heat exchanger including tubes with grooved fins" discloses a heat exchanger with grooved fins. The fins are difficult to process and inconvenient to clean. Dust easily accumulates in the grooves, greatly reducing the heat conduction performance.

[0005] The Chinese patent number "CN102620584A" and the patent name "Bimetal Fin Heat Pipe" discloses a heat exchange tube, which is provided with rolled aluminum fins. Due to the bimetallic structure, there is a gap between the base tube and the fin, so the heat transfer efficiency from the base tube to the fin is low.

[0006] The Chinese patent number "CN1343867A" and the patent name "Expanded corrugated wound fin tube" discloses a heat exchange tube, in which there is a gap between the base tube and the fin, so the heat transfer efficiency from the base tube to the fin is low.

[0007] The Chinese patent number "CN114833433B" and the patent name "A steel-aluminum fin tube and its high-frequency resistance welding method" discloses a fin tube and a fin tube welding method. Although it can increase the heat transfer efficiency from the base tube to the fin, the process is complicated and the cost is high. Summary of the invention

[0008] The present application provides a fin for a heat exchanger, a fin processing method, an equipment and a heat exchanger, so as to at least solve the above technical problems existing in the prior art.

[0009] According to a first aspect of the present application, a fin for a heat exchanger is provided, comprising a fixing portion and a fin portion, the fixing portion being provided with a plurality of fin slots, a first extrusion deformation zone and a second extrusion deformation zone being provided on both sides of the fin slot, when the fin portion is partially inserted into the fin slot and abuts against the bottom of the fin slot, the first extrusion deformation zone and the second extrusion deformation zone are squeezed toward the fin portion under the action of an external force, so that the fin portion is in close contact with the bottom of the fin slot, the first extrusion deformation zone and the second extrusion deformation zone.

[0010] Compared with the prior art, the fin for heat exchanger of the present application has the following beneficial effects: In this way, the first extrusion deformation zone and the second extrusion deformation zone only move the extruded fin portion in a direction parallel to the outer surface of the fixed portion under the action of external force, and will not generate an outward force on the fin portion to cause a gap between the fin portion and the fixed portion or between the fixed portion and the base tube. Compared with the prior art, this greatly improves the efficiency of heat conduction, makes the heat transfer more efficient, and achieves energy-saving effects. In addition, the fin portion and the fixed portion are manufactured separately, and the height of the fin portion is no longer limited by the extrusion process, which can greatly increase the height of the fin, increase the heat exchange area, improve the heat exchange efficiency, and thus reduce energy consumption.

[0011] In one possible implementation mode, the fixing portion is in the shape of a circular tube, and a fin groove with a rectangular cross-section is provided on the surface of the fixing portion. The fin groove is extended along an equal-diameter thread curve, and the fin portion is provided with a connecting area and a heat dissipation area. The connecting area has a rectangular cross-section and is spirally wound in the fin groove and contacts the fixing portion, and the heat dissipation area extends outward from the fin groove to a certain height. This design facilitates the winding of the fin portion on the fixing portion, and has higher production efficiency.

[0012] In one embodiment, the heat dissipation area includes a connecting end and a deformed end. The connecting end is a planar structure or a spiral surface structure connected to the connecting area, and the deformed end is a curved structure. The thickness of the deformed end is less than the thickness of the connecting end. This can increase the heat dissipation area, form turbulence, and improve the heat exchange efficiency.

[0013] In one embodiment, the deformed end is provided with an arc-shaped rounded corner section and an angular section, and the arc-shaped rounded corner section and the angular section are arranged at intervals. The arc-shaped rounded corner section can make the airflow on both sides transition smoothly, and the angular section is provided with a corner so that part of the airflow can turn quickly when passing through this position, thereby avoiding the formation of smooth laminar flow, and the angular section can be used to form turbulence to improve the heat exchange efficiency.

[0014] In one possible implementation mode, the deformed end is periodically bent back and forth along the wave line. When the fin portion is installed in the fin slot, the wave peaks of adjacent fin portions are staggered so as to periodically approach or move away from each other. The width of the airflow channel formed by adjacent fin portions can be periodically narrowed or widened, so that the flow velocity will change periodically when the airflow passes between two fins. This makes cleaning more convenient, and the speed change can be used to form partial turbulence to improve the heat exchange efficiency.

[0015] According to a second aspect of the present application, a heat exchanger is provided, which is provided with a heat exchange tube box, the heat exchange tube box is provided with heat exchange tubes, and the heat exchange tubes are installed with the above-mentioned heat exchanger fins, which can improve heat exchange efficiency and reduce energy consumption.

[0016] According to the third aspect of the present application, a heat exchanger fin processing method is provided, which is used to process the above-mentioned heat exchanger fins, and at least includes the following steps: a tube blank processing step, a first metal tube is sleeved outside a second metal tube, the first metal tube and the second metal tube are fixed to a tube blank mold, the first metal tube is drawn to a required outer diameter by a drawing die, and a rectangular fin groove is processed on the outer surface of the first metal tube by cold extrusion or material removal; a fin installation step, inserting or winding the connection area of ​​the fin part into the fin groove; an extrusion fixing step, using an extrusion molding tool to apply pressure on both sides of the fin groove so that the metal flows to the connection area to extrude the connection area. In this way, cold extrusion is used to make the contact more complete and improve the heat conduction efficiency.

[0017] In one embodiment, the method further includes a fin bending step, wherein the deformed ends of the rectangular long strip fins are bent and thinned and stretched using a conical wheel, so that the fins become a curved circular ring structure with a curved outer contour. The curved structure is used to form turbulence, further improving heat exchange efficiency and reducing energy consumption.

[0018] According to the fourth aspect of the present application, a fin processing device for a heat exchanger is provided, comprising a main shaft, an extrusion wheel, a winding wheel and an extension and bending wheel, the main shaft can rotate circumferentially and move axially and install a base pipe with a fixed portion, the extrusion wheel, the winding wheel and the extension and bending wheel are arranged in the radial direction of the main shaft, the extension and bending wheel comprises a first curved cone wheel and a second curved cone wheel, the first curved cone wheel is provided with a conical portion and a first curved portion, the second curved cone wheel is provided with a conical portion and a second curved portion, the first curved portion and the second curved portion are matched to be able to bend a part of the long strip fin area into a curved structure, the conical portion and the conical portion can extend a part of the long strip fin area into a fan-shaped structure, the winding wheel is provided with a fin groove to accurately insert the annular fin processed by the extension and bending wheel into the fin groove, the extrusion wheel can apply a radial force to the fixed portion, so that the fixed portion forms an extrusion on the structure in the fin groove. The device can process curved fins and fix them to round tubes, which can improve heat exchange efficiency.

[0019] In one embodiment, the winding wheel includes a first inclined wheel and a second inclined wheel, the first inclined wheel is provided with a first curved ring, the second inclined wheel is provided with a second curved ring, the first central axis of the first inclined wheel and the second central axis of the second inclined wheel form a certain angle so as to have a minimum spacing at the first end and a maximum spacing at the second end. The winding wheel is provided with a common rectangular groove, which is easy to cause the fin to deform during winding, and the fin groove with a curved structure can match the shape of the fin, but this will cause interference during rotation. By providing the first inclined wheel and the second inclined wheel, interference during rotation can be avoided, and the fin can be tightly and accurately wound to the product groove at the first end, which can improve the heat conduction efficiency and further reduce energy consumption.

[0020] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become readily understood. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, wherein: In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0022] Figure 1 A schematic diagram of the fin structure of a heat exchanger in the prior art is shown; Figure 2 A schematic diagram of a fin for a heat exchanger according to an embodiment of the present application is shown; Figure 3 A schematic diagram of a half-section of a fin for a heat exchanger according to an embodiment of the present application is shown; Figure 4 Shows Figure 3 Enlarged view of point A in the middle; Figure 5 A schematic diagram of a heat exchanger according to an embodiment of the present application is shown; Figure 6 A schematic diagram of a fin for a heat exchanger according to an embodiment of the present application is shown; Figure 7 Shows this application Figure 6 Enlarged view of point B in the middle; Figure 8 A schematic diagram of airflow with angular fins for a heat exchanger according to an embodiment of the present application is shown; Fig. 9 A schematic diagram of airflow of a corrugated fin for a heat exchanger according to an embodiment of the present application is shown; Fig.10 A schematic diagram showing the composition structure of a drawing die of a fin processing device for a heat exchanger according to an embodiment of the present application is shown; Fig.11 The schematic diagram of the composition structure of the fin processing equipment for the heat exchanger according to the embodiment of the present application is shown; Fig.12 A schematic diagram of an extension and bending wheel of a fin processing device for a heat exchanger according to an embodiment of the present application is shown; Fig.13 A schematic diagram showing a separation state of a winding wheel of a fin processing device for a heat exchanger according to an embodiment of the present application is shown; Fig.14 A schematic diagram showing the matching state of the winding wheels of the fin processing equipment for the heat exchanger according to the embodiment of the present application is shown. DETAILED DESCRIPTION

[0023] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings 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 those skilled in the art without creative work are within the scope of protection of the present application.

[0024] Embodiment 1: like Figure 2 , Figure 3 and Figure 4 As shown, a fin for a heat exchanger is provided on a base tube 2, and comprises a fixing portion 12 and a fin portion 11. The fixing portion 12 is a round tube, and can also be a square tube in certain cases. The fixing portion 12 is sleeved outside the base tube 2 and can be integrated with the base tube 2 by cold drawing. The fixing portion 12 is provided with a plurality of fin slots 10, and a first extrusion deformation zone 13 and a second extrusion deformation zone 14 are provided on both sides of the fin slot 10. When the fin portion 11 is partially inserted into the fin slot 10 and abuts against the bottom of the fin slot 10, the first extrusion deformation zone 13 and the second extrusion deformation zone 14 are extruded toward the fin portion 11 under the action of an external force, so that the fin portion 11 is in close contact with the bottom of the fin slot 10, the first extrusion deformation zone 13 and the second extrusion deformation zone 14.

[0025] like Figure 2 , Figure 3 and Figure 4 As shown, the fixing portion 12 is in the shape of a circular tube, and a fin slot 10 with a rectangular cross section is provided on the surface of the fixing portion 12. The fin slot 10 is extended along an equal-diameter thread curve, and the fin portion 11 is provided with a connecting area 15 and a heat dissipation area 16. The connecting area 15 has a rectangular cross section and is spirally wound in the fin slot 10 and contacts the fixing portion 12. The heat dissipation area 16 extends outward from the fin slot 10 to a certain height.

[0026] Embodiment 2: like Figure 6 , Figure 7and Figure 8 As shown, the heat dissipation area 16 includes a connection end 17 and a deformation end 18. The deformation end 18 slowly deforms to the connection end 17 to achieve a smooth transition. The connection end 17 is a plane structure or a spiral surface structure connected to the connection area 15. The deformation end 18 is a curved surface structure. The thickness of the deformation end 18 is less than the thickness of the connection end 17. In this way, a strip of aluminum alloy sheet can be extruded. The connection area 15 needs to be inserted into the fin slot 10, so it needs to be kept flat. If the fin slot 10 is set to a curved surface structure, the connection area 15 can also be processed into a corresponding curved surface structure, but considering the influence of rotation, the fin slot 10 needs to be slightly widened to avoid being stuck.

[0027] In one embodiment, the deformed end 18 is provided with an arc-shaped fillet section 19 and an angular section 20, which are arranged at intervals. The arc-shaped fillet section 19 has an arc cross section that can make the airflow on both sides transition smoothly. The arc range of the arc-shaped fillet section 19 is 0.3-0.7. If the arc is too large, the flow resistance is large and it is inconvenient to process. If the arc is small, the heat exchange effect is poor. The angular section 20 is provided with a corner, that is, a sharp corner with an edge, so that part of the airflow passes through this position and turns quickly. The arc range of the sharp angle is 2.4-2.8, which is easier to process. Figure 8 As shown, the angular section 20 can easily generate turbulence when the airflow speed is fast due to the rapid angle change, which can fully carry out heat exchange, improve heat exchange efficiency, and facilitate cleaning.

[0028] Embodiment 3: like Figure 6 and Fig. 9 As shown, the deformed end 18 is periodically bent back and forth along the wave line. When the fin portion 11 is installed in the fin slot 10, the wave peaks of adjacent fin portions 11 are staggered so as to periodically approach or move away from each other. The width of the airflow channel formed by adjacent fin portions 11 can be periodically narrowed or widened, so that the flow velocity changes periodically when the airflow passes between two fins.

[0029] Embodiment 4: like Figure 5 As shown, a heat exchanger is provided with a heat exchange tube box 8, the heat exchange tube box 8 is provided with heat exchange tubes 9, and the heat exchange tubes 9 are installed with the heat exchanger fins 1 in the above-mentioned embodiments 1-3.

[0030] Embodiment 5: A method for processing fins for heat exchangers is used to process the fins 1 for heat exchangers in the above-mentioned embodiments 1-4, and at least includes the following steps: a tube blank processing step, in which a first metal tube, i.e., a fixing portion 12 in the previous embodiment, is sleeved outside a second metal tube, i.e., a base tube 2, and the first metal tube and the second metal tube are fixed to a tube blank mold, and the first metal tube is drawn to a required outer diameter by a drawing mold, so that the first metal tube and the second metal tube can be tightly fixed together, and a rectangular fin groove 10 is processed on the outer surface of the first metal tube by cold extrusion or material removal. If a non-rectangular groove needs to be opened, it is more convenient to use cold extrusion molding; a fin installation step, in which a connection area 15 of a fin portion 11 is inserted or wrapped into the fin groove 10; an extrusion fixing step, in which an extrusion molding tool is used to apply pressure on both sides of the fin groove 10 so that the metal flows to the connection area 15 to extrude the connection area 15, so that stable and reliable fixation can be achieved, and the thermal conductivity performance is also good.

[0031] In one embodiment, a fin bending step is also included, in which a conical wheel is used to bend, thin and stretch the deformed end 18 of the rectangular long strip fin, so that the fin becomes a curved circular ring structure with a curved outer contour. This can reduce the amount of deformation when the fin is installed, so that the connection between the fin and the first metal tube is more stable and the contact is tighter.

[0032] Embodiment 6: like Figure 10-14 As shown, a heat exchanger fin processing equipment is used to process the heat exchanger fin 1 in the above-mentioned embodiments 1-4, including a pipe drawing device and a fin winding device, the pipe drawing device includes a tube blank mold 6 and a drawing mold 7, the fin winding device includes a main shaft 3, an extrusion wheel 31, a winding wheel 4 and an extension and bending wheel 5, the main shaft 3 can rotate circumferentially and move axially and install a base pipe 2 with a fixing portion 12, the extrusion wheel 31, the winding wheel 4 and the extension and bending wheel 5 are arranged in the radial direction of the main shaft 3, the extension and bending wheel 5 includes a first curved surface cone wheel 51 and a second curved surface cone wheel 52, the first curved surface cone wheel 51 has The conical surface 53 and the first curved surface 54, the second curved cone wheel 52 is provided with a conical portion 55 and a second curved surface 56, the first curved surface 54 and the second curved surface 56 match to bend a part of the long strip fin 22 into a curved structure, the conical surface 53 and the conical portion 55 can extend a part of the long strip fin 22 into a fan-shaped structure, the winding wheel 4 is provided with a fin groove 10 to accurately insert the annular fin 23 processed by the extension and bending wheel 5 into the fin groove 10, and the extrusion wheel 31 can apply a radial force to the fixing portion 12, so that the fixing portion 12 forms an extrusion on the structure in the fin groove 10. The heat exchanger fin 1 is made of aluminum alloy material with good ductility and can be bent and deformed within a certain range.

[0033] like Fig.12As shown, the first curved cone wheel 51 can be regarded as processing multiple raised curved surfaces 57 on the conical surface. The figure shows that a fin with an angular section 21 similar to a tile is made. Only the raised curved surface can be set, and the concave curved surface 58 can be set on the second curved cone wheel 52. In this way, the fin with the angular section 21 can be formed by extrusion. If a wavy fin is to be made, the concave curved surface 58 is processed at a position adjacent to the raised curved surface 57. The conical structure can eventually extrude an annular fin 23, making the winding deformation smaller and easier, the winding is also tighter, and the heat transfer is better, further increasing the heat exchange efficiency of the heat exchanger and reducing energy consumption.

[0034] like Fig.13 and Fig.14 As shown, the winding wheel 4 includes a first inclined wheel 41 and a second inclined wheel 42. The first inclined wheel 41 is provided with a first curved ring 43, and the second inclined wheel 42 is provided with a second curved ring 44. The first center axis of the first inclined wheel 41 and the second center axis of the second inclined wheel 42 form a certain angle so that the minimum spacing at the first end can abut against the annular fin 23 to insert the annular fin 23 into the fin groove 10, and the maximum spacing at the second end.

[0035] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this application can be executed in parallel, sequentially or in different orders, as long as the expected results of the technical solution of this application can be achieved, and this document does not limit this.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A fin for a heat exchanger, characterized in that: The invention comprises a fixing portion (12) and a fin portion (11), wherein the fixing portion (12) is provided with a plurality of fin slots (10), and a first extrusion deformation zone (13) and a second extrusion deformation zone (14) are provided on both sides of the fin slot (10); when the fin portion (11) is partially inserted into the fin slot (10) and abuts against the bottom of the fin slot (10), the first extrusion deformation zone (13) and the second extrusion deformation zone (14) are pressed toward the fin portion (11) under the action of an external force, so that the fin portion (11) is in close contact with the bottom of the fin slot (10), the first extrusion deformation zone (13) and the second extrusion deformation zone (14).

2. The heat exchanger fin according to claim 1, characterized in that: The fixing portion (12) is in the shape of a circular tube. The surface of the fixing portion (12) is provided with the fin slot (10) having a rectangular cross section. The fin slot (10) is extended along an equal-diameter thread curve. The fin portion (11) is provided with a connection area (15) and a heat dissipation area (16). The connection area (15) has a rectangular cross section and is spirally wound in the fin slot (10) and in contact with the fixing portion (12). The heat dissipation area (16) extends outward from the fin slot (10) to a certain height.

3. The heat exchanger fin according to claim 2, characterized in that: The heat dissipation area (16) comprises a connection end (17) and a deformation end (18); the connection end (17) is a plane structure or a spiral surface structure connected to the connection area (15); the deformation end (18) is a curved surface structure; the thickness of the deformation end (18) is less than the thickness of the connection end (17).

4. The heat exchanger fin according to claim 3, characterized in that: The deformed end (18) is provided with an arc-shaped rounded corner section (19) and an angular section (21), the arc-shaped rounded corner section (19) and the angular section (21) being arranged at intervals, the arc-shaped rounded corner section (19) enabling smooth transition of airflows on both sides, and the angular section (21) is provided with a corner so that part of the airflow can be quickly turned when passing through the position.

5. The heat exchanger fin according to claim 3, characterized in that: The deformed end (18) is periodically bent back and forth along the wave line, and when the fin portion (11) is installed in the fin slot (10), the wave peaks of adjacent fin portions (11) are staggered so as to periodically approach or move away from each other, and the width of the airflow channel formed by adjacent fin portions (11) can be periodically narrowed or widened, so that the flow velocity of the airflow will change periodically when passing between two fins.

6. A heat exchanger, characterized in that: A heat exchange tube box (8) is provided, the heat exchange tube box (8) is provided with a heat exchange tube (9), and the heat exchange tube (9) is installed with a heat exchanger fin according to any one of claims 1 to 5.

7. A method for processing a heat exchanger fin, used for processing the heat exchanger fin according to any one of claims 1 to 5, characterized in that: At least the following steps are included: a tube blank processing step, wherein the first metal tube is sleeved outside the second metal tube, the first metal tube and the second metal tube are fixed to a tube blank die, the first metal tube is drawn to a required outer diameter by a drawing die, and a rectangular fin groove (10) is processed on the outer surface of the first metal tube by cold extrusion or material removal; a fin installation step, inserting or winding the connection area (15) of the fin portion (11) into the fin slot (10); An extrusion fixing step is performed by using an extrusion molding tool to apply pressure on both sides of the fin slot (10) so that the metal flows toward the connection area (15) and extrude the connection area (15).

8. The method for processing heat exchanger fins according to claim 7, characterized in that: The method also includes a fin bending step, in which a conical wheel is used to bend, thin, and stretch the deformed end (18) of the rectangular long strip fin (22), so that the fin becomes a curved circular ring structure with a curved outer contour.

9. A heat exchanger fin processing equipment, used for processing the heat exchanger fin according to any one of claims 1 to 5, characterized in that: It comprises a main shaft (3), an extrusion wheel (31), a winding wheel (4) and an extension and bending wheel (5); The main shaft (3) is capable of circumferential rotation and axial movement and is provided with a base pipe (2) having a fixing portion (12); the extrusion wheel (31), the winding wheel (4) and the extension and bending wheel (5) are arranged in the radial direction of the main shaft (3); The extending and bending wheel (5) comprises a first curved cone wheel (51) and a second curved cone wheel (52); the first curved cone wheel (51) is provided with a cone portion (53) and a first curved portion (54); the second curved cone wheel (52) is provided with a cone portion (55) and a second curved portion (56); the first curved portion (54) matches the second curved portion (56) to bend a partial area of ​​the long strip fin (22) into a curved structure; the cone portion (53) and the cone portion (55) are capable of extending a partial area of ​​the long strip fin (22) into a fan-shaped structure; the winding wheel (4) is provided with a fin groove (10) to accurately insert the annular fin (23) formed by the extending and bending wheel (5) into the fin groove (10); and the extrusion wheel (31) is capable of applying a radial force to the fixing portion (12) so that the fixing portion (12) extrudes the structure in the fin groove (10).

10. The heat exchanger fin processing equipment according to claim 9, characterized in that: The winding wheel (4) comprises a first inclined wheel (41) and a second inclined wheel (42); the first inclined wheel (41) is provided with a first curved surface ring (43); the second inclined wheel (42) is provided with a second curved surface ring (44); a first central axis of the first inclined wheel (41) and a second central axis of the second inclined wheel (42) form a certain angle so that a minimum spacing is provided at a first end and a maximum spacing is provided at a second end.

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