Fin and heat exchanger

Abstract

The present disclosure relates to the technical field of heat exchange, and provides a fin and a heat exchanger. The fin comprises a fin body, first supporting members, and second supporting members, and the fin body is provided with a plurality of mounting recesses spaced apart along the length direction of the fin body. The first supporting members are arranged at one end in the width direction of the fin body, the second supporting members are arranged at the other end in the width direction of the fin body, and the first supporting members at least partially overlap with the second supporting members in the width direction of the fin body. The first supporting members and the second supporting members can support adjacent fins from two sides in the width direction of the fin body, thereby improving the stability and reliability of the support and effectively solving positioning and support issues between fins. The first supporting members are disposed on the side of the fin body close to the mounting recesses, and the second supporting members are disposed on the side of the fin body away from the mounting recesses. Thus, when fins are arranged and installed in a stacked configuration, even if subjected to external forces, the installed fins will not tilt, thereby reducing the risk of support loss and fin damage.

Description

Fin and heat exchanger

[0001] Cross-references

[0002] This disclosure claims priority to Chinese patent application No. 202322923859.7, filed on October 30, 2023, entitled “A Fin and Heat Exchanger,” and the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure generally relates to the field of heat exchange technology, and in particular, to a fin and a heat exchanger. Background Art

[0004] When existing heat exchanger fins are arranged and installed, external forces can cause the fin support structure to become unstable, leading to fin tilt. Subsequent installation can lead to loss of the fin flange's retaining function and damage to the fins. Furthermore, if fin tilt causes the fins to fall over and stick together, this increases air resistance on the air side, reduces the heat exchange area, and affects heat exchanger performance.

[0005] Summary of the Invention

[0006] According to a first aspect of the present disclosure, a fin is provided, comprising: a fin body, wherein the fin body is provided with a plurality of mounting grooves spaced apart along the length direction of the fin body; a first support member is provided at one end of the fin body in the width direction; and a second support member is provided at the other end of the fin body in the width direction; wherein the first support member and the second support member at least partially overlap along the width direction of the fin body.

[0007] According to a second aspect of the present disclosure, a heat exchanger according to an embodiment of the present disclosure includes a flat tube and the above-mentioned fin, wherein the flat tube is arranged in the mounting groove of the fin. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] To better understand the present disclosure, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, related elements or components may have different arrangements as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each drawing. The above and other features and advantages of the present disclosure will become more apparent by describing in detail its exemplary embodiments with reference to the accompanying drawings.

[0009] in:

[0010] FIG1 shows a structural schematic diagram 1 of a form of fin according to an embodiment of the present disclosure;

[0011] FIG2 shows a second structural diagram of a fin in one form according to an embodiment of the present disclosure;

[0012] FIG3 shows a structural schematic diagram 1 of another form of a fin according to an embodiment of the present disclosure;

[0013] FIG4 shows a second structural diagram of another form of a fin according to an embodiment of the present disclosure;

[0014] FIG5 is a schematic diagram showing a structure of a stacked arrangement of fins according to an embodiment of the present disclosure;

[0015] FIG6 is a schematic diagram showing the installation of fins and flat tubes according to an embodiment of the present disclosure.

[0016] Among them, the figure numbers are explained as follows: 100, flat tube; 1, fin body; 11, mounting groove; 111, first groove edge; 112, second groove edge; 12, heat dissipation bridge; 13, convex bump; 14, drainage structure; 2, first support member; 21, first support plate; 22, first connecting plate; 3, second support member; 31, second support plate; 32, second connecting plate; 4, third support member; 41, load-bearing plate. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the exemplary embodiments of the present disclosure to clearly and completely describe the technical solutions in the exemplary embodiments of the present disclosure. The exemplary embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of the present disclosure.

[0018] In the description of this disclosure, unless otherwise expressly provided or limited, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more; and the term "and / or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" or "an" object is also intended to mean one of a possible plurality of such objects.

[0019] Unless otherwise specified or explained, the terms "connect," "fixed," etc. should be understood broadly. For example, "connected" may refer to a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; and "connected" may refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0020] Furthermore, in the description of the present disclosure, it should be understood that the directional words such as “upper”, “lower”, “inner” and “outer” described in the example embodiments of the present disclosure are described based on the angles shown in the accompanying drawings and should not be understood as limiting the example embodiments of the present disclosure. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) “upper”, “lower”, or “inner” or “outer”, it can not only be directly connected to the other (one or more) elements “upper”, “lower” or “inner” or “outer”, but can also be indirectly connected to the other (one or more) elements “upper”, “lower” or “inner” or “outer” through an intermediate element.

[0021] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0022] FIG1 shows a first structural diagram of a fin in one form according to an embodiment of the present disclosure; FIG2 shows a second structural diagram of a fin in one form according to an embodiment of the present disclosure.

[0023] As shown in Figures 1 and 2, this embodiment provides a fin, which includes a fin body 1. The fin body 1 is provided with a plurality of mounting slots 11 spaced apart along the length of the fin body 1. A first support member 2 is provided at one end in the width direction of the fin body 1, and a second support member 3 is provided at the other end in the width direction of the fin body 1. The first support member 2 and the second support member 3 at least partially overlap along the width direction of the fin body 1.

[0024] The fins provided in this embodiment include a first support member 2 and a second support member 3, respectively disposed on either side of the fin body 1 in the width direction. The first support member 2 and the second support member 3 can support adjacent fins from both sides of the fin body 1 in the width direction, improving the stability and reliability of the support and effectively solving the positioning support problem between the fins. The first support member 2 is disposed at one end of the fin body 1 in the width direction, and the second support member 3 is disposed at the other end of the fin body 1 in the width direction. When the fins are stacked and installed, even if the fins are subjected to external forces, the fin installation will not tilt, reducing the risk of loss of support function and fin damage.

[0025] It can be understood that the length direction of the fin body 1 is defined as the first direction, the first direction is marked with D1, the width direction of the fin body 1 is defined as the second direction, the second direction is marked with D2, and the thickness direction of the fin body 1 is defined as the third direction, the third direction is marked with D3, wherein the first direction, the second direction and the third direction are perpendicular to each other, and the first direction, the second direction and the third direction only represent spatial directions and have no practical meaning.

[0026] In one embodiment, as shown in FIG. 1-FIG . 2 , the first support member 2 and / or the second support member 3 are formed by folding the cut material on the fin body 1 .

[0027] The first and second support members 2, 3 of the flanged structure are formed directly from the spare material on the fin body 1, improving material utilization and eliminating the need for additional tooling, effectively saving material costs. This allows for a fin with a self-contained positioning support structure, facilitating assembly. The first and second support members 2, 3 can be formed by stamping, saving material costs and eliminating the need for additional tooling, facilitating assembly and enabling large-scale, industrialized production.

[0028] In addition, by selecting the height of the first support member 2 and the second support member 3 according to actual needs, fin positioning requirements of different spacings can be achieved. The fin structure itself can ensure a sufficiently large fin spacing range, and can effectively position and strengthen the support between the fins, preventing the occurrence of reverse bonding during the furnace welding process.

[0029] In one embodiment, as shown in FIG. 1-FIG . 2 , the first support member 2 and the second support member 3 have the same height.

[0030] Since the first support member 2 and the second support member 3 have the same height, the fin is supported on the first support member 2 and the second support member 3 of the adjacent fin, and can form supports of the same height on both sides of the fin along the second direction, so that there is the same spacing between adjacent fins, ensuring a good support effect between adjacent fins.

[0031] Of course, the heights of the first support member 2 and the second support member 3 can also be different; wherein, one end of one of the two adjacent fins along the width direction of the fin body 1 is abutted against the first support member 2 of the other fin, and the other end of one of the two adjacent fins along the width direction of the fin body 1 is clamped to the second support member 3 of the other fin, which can increase the fixing effect between the two adjacent fins to ensure position stability.

[0032] In one embodiment, as shown in Figures 1-2, the first support member 2 includes a first support plate 21 and a first connecting plate 22, one end of the first connecting plate 22 is connected to the fin body 1, the first support plate 21 is connected to the other end of the first connecting plate 22, and is arranged parallel to the fin body 1; the second support member 3 includes a second support plate 31 and a second connecting plate 32, one end of the second connecting plate 32 is connected to the fin body 1, the second support plate 31 is connected to the other end of the second connecting plate 32, and is arranged parallel to the fin body 1.

[0033] The first support plate 21 is formed on the top of the first support member 2 or the top of the second support member 3 , which can increase the contact area between adjacent fins at the supporting position and improve the stability and reliability of the supporting structure.

[0034] In one embodiment, the first connecting plate 22 can be vertically connected to the fin body 1, and the second connecting plate 32 can be vertically connected to the fin body 1. In other words, the first connecting plate 22 extends along the thickness direction of the fin body 1, and the second connecting plate 32 extends along the thickness direction of the fin body 1.

[0035] As shown in FIG5 , among two adjacent fins, the first support plate 21 of the first support member 2 of one fin abuts against the fin body 1 of the other fin.

[0036] As shown in FIG. 1 , the first support plate 21 extends from the first connecting plate 22 along the length direction of the fin body 1 , and the second support plate 31 extends from the second connecting plate 32 along the length direction of the fin body 1 .

[0037] Of course, in other embodiments, the first support plate 21 and the second support plate 31 may also extend along the width direction of the fin body 1 , or along any direction between the length direction and the width direction of the fin body 1 .

[0038] In one embodiment, the extension direction of the first support plate 21 is the same as or opposite to the extension direction of the second support plate 31. When multiple fins are stacked, the first support plate 21 of one of two adjacent fins abuts against the fin body 1 of the other fin, and the second support plate 31 of one fin is clamped to the fin body 1 of the other fin. The first support plate 21 and the second support plate 31 increase the contact area between the two adjacent fins, thereby improving the structural stability of the adjacent fins after assembly.

[0039] As shown in Figure 1 , there are multiple first support members 2, spaced apart along the length of the fin body 1. The first support plates 21 of adjacent first support members 2 extend in opposite directions. There are multiple second support members 3, spaced apart along the length of the fin body 1. The second support plates 31 of adjacent second support members 3 extend in opposite directions. The second support plates 21 on the same fin body 1 extend in different directions, which helps improve the stability of adjacent fins after stacking.

[0040] In the embodiment of the present application, the extension directions of the first support plates 21 of adjacent first support members 2 are opposite, and the extension directions of the second support plates 31 of adjacent second support members 3 are opposite. The extension directions of the first support plates 21 on the same fin body 1 are different, which is beneficial to improving the stability of adjacent fins after stacking.

[0041] Of course, in other embodiments, the first support plates 21 of the plurality of first support members 2 may extend in the same direction, and the second support plates 31 of the plurality of second support members 3 may extend in the same direction.

[0042] As shown in Figure 1 , the other end of the fin body 1 in the width direction has a drainage structure 14. The drainage structure 14 has multiple folded portions arranged sequentially along the width direction of the fin body 1 to form a corrugated structure. The corrugated structure extends along the length direction of the fin body 1. The second support member 3 is disposed in the folded portion of the drainage structure 14 away from the mounting groove 11. The drainage structure 14 is used to drain water from the fins.

[0043] In the embodiment of the present application, by providing the drainage structure 14 and the second support member 3 being provided on the drainage structure 14 , drainage can be achieved without affecting heat exchange.

[0044] In one embodiment, the mounting groove 11 extends along the width direction of the fin body 1 , and the mounting groove 11 is used to mount the flat tube 100 (as shown in FIG. 6 ).

[0045] The width direction of the mounting groove 11 is the second direction, which is also the width direction of the flat tube 100. That is, the fin adopts a slot-type fin, and the flat tube 100 can be smoothly inserted into the mounting groove 11 along a direction perpendicular to the length of the fin body 1, thereby realizing the clamping and fixing between the flat tube 100 and the fin.

[0046] In one embodiment, the mounting groove 11 is located at one side edge of the fin body 1 , and an open end is provided on a side of the mounting groove 11 away from the second support member 3 .

[0047] With this structure, the flat tube 100 can be inserted from the open end along the second direction. The flat tube 100 is tightly fitted into the mounting groove 11 along its longitudinal plane, which reduces the difficulty of assembling the flat tube 100 in the mounting groove 11 and improves assembly efficiency. This significantly improves assembly efficiency, especially when the flat tube 100 needs to be assembled with multiple fins simultaneously.

[0048] In addition, since the cutting depth of the mounting groove 11 is relatively large, the contact area between the flat tube 100 and the mounting groove 11 is increased, thereby improving the clamping effect between the flat tube 100 and the mounting groove 11 .

[0049] It is understandable that in some other embodiments, the mounting groove 11 can also be set at a position close to the edge of the fin body 1, and the mounting groove 11 is not provided with an open end. The mounting groove 11 is specifically a through groove structure. When the flat tube 100 is installed in the mounting groove 11, the flat tube 100 is inserted into the mounting groove 11 along the third direction.

[0050] It can be understood that since the mounting groove 11 has an open end on the side away from the second support member 3, fins can be provided on both sides of the flat tube 100, and the openings of the mounting grooves 11 of the fins on both sides are opposite to each other, so that it is convenient to insert the fins from both sides of the flat tube 100, facilitate the snap-fitting between the fins and the flat tube 100, reduce the difficulty of assembly, and improve the assembly efficiency.

[0051] In one embodiment, as shown in FIG. 1-FIG . 2 , a plurality of third support members 4 are provided around the fin body 1 along the periphery of the mounting groove 11 .

[0052] Because the mounting groove 11 serves as the mounting area for the flat tubes 100 within the fin body 1, multiple third support members 4 are arranged around the mounting groove 11. Once the flat tubes 100 are inserted into the mounting groove 11, the multiple third support members 4 provide effective positioning and support for the flat tubes 100. Furthermore, the contact between the multiple third support members 4 and the flat tubes 100 increases the contact area between the fins and the flat tubes 100, effectively preventing the fins from flanking and sticking during furnace welding. This also increases the heat exchange area of ​​the fins, improving the heat exchange efficiency of the heat exchanger.

[0053] In one embodiment, the plurality of third support members 4 are symmetrically arranged on both sides of the mounting slot 11 along the length direction of the fin body 1 ; and / or the plurality of third support members 4 are symmetrically arranged on both sides of the mounting slot 11 along the width direction of the fin body 1 .

[0054] The arrangement of the multiple third support members 4 around the mounting groove 11 is not arbitrary. If the multiple third support members 4 are symmetrically arranged on both sides of the mounting groove 11 along the first direction, the stability of the two adjacent fins along the first direction when the flat tube 100 is installed in the mounting groove 11 is improved; and / or if the multiple third support members 4 are symmetrically arranged on both sides of the mounting groove 11 along the second direction, the stability of the two adjacent fins along the second direction when the flat tube 100 is installed in the mounting groove 11 is improved.

[0055] In one embodiment, the third support member 4 is an integral structure or the third support member 4 is a split structure.

[0056] As shown in Figures 1 and 2 , if the third support member 4 is a monolithic structure and its width along the second direction is relatively long, the third support member 4 can also be referred to as a wide structure. For example, two third support members 4 are provided around each mounting slot 11, and the two third support members 4 are arranged opposite each other along the first direction. The third support members 4 have a relatively large contact area with the adjacent fins, providing greater support for the adjacent fins. Furthermore, the contact area between the third support members 4 and the flat tubes 100 is relatively large, thereby improving heat exchange efficiency.

[0057] Specifically, when the third support member 4 is an integral structure, the length of the third support member 4 along the width direction of the fin body 1 is L, and the width of the mounting groove 11 along the length direction of the fin body 1 is B; wherein, L=1 / 2B, and the dimension setting of the length of the third support member 4 along the width direction of the fin body 1 ensures the stability of the structure of the third support member 4.

[0058] Specifically, when the third support member 4 is a split structure, the third support member 4 includes a plurality of sub-support members arranged along the width direction of the fin body 1, and a gap is set between two adjacent sub-support members. The distance of the gap along the width direction of the fin body 1 is A, A<3mm. The distance of the gap along the width direction of the fin body 1 is set, which effectively ensures stability while being conducive to drainage, making the structure of the third support member 4 more flexible.

[0059] FIG3 shows a first structural diagram of another form of a fin according to an embodiment of the present disclosure; FIG4 shows a second structural diagram of another form of a fin according to an embodiment of the present disclosure.

[0060] As shown in Figures 3 and 4 , if the third support member 4 is a split structure, the width of the third support member 4 along the second direction is relatively short. In this case, the third support member 4 can also be referred to as a narrow structure. For example, if four third support members 4 are arranged around each mounting slot 11, with two groups of third support members 4 arranged opposite each other along the first direction, and each group of third support members 4 includes two third support members 4 arranged opposite each other along the second direction, there are four support points around the mounting slot 11 between two adjacent fins, improving the positioning and support between the two adjacent fins.

[0061] In one embodiment, as shown in FIG. 1 to FIG. 4 , the mounting groove 11 includes two oppositely disposed first groove edges 111 and a second groove edge 112 disposed between the two first groove edges 111 ; wherein the third support member 4 is connected to the first groove edge 111 .

[0062] Because the third support members 4 are only provided on the first groove edge 111, the surface area of ​​the plurality of third support members 4 corresponding to the mounting groove 11 is less than or equal to the area of ​​the mounting groove 11. This fully utilizes the cut material at the fins corresponding to the mounting groove 11, effectively positioning and supporting the fins. The presence of third support members 4 on both second groove edges 112 provides even more effective positioning and support for the flat tubes 100, reducing the risk of fins tipping during installation and further increasing the contact area between the fins and the flat tubes 100, thereby improving the heat exchange efficiency of the heat exchanger.

[0063] Among them, the second groove edge 112 is an arc structure, and the second groove edge 112 of the arc structure forms a better fit with the arc-shaped outer walls on both sides of the width direction of the flat tube 100, making the connection between the fin and the flat tube 100 tighter, further improving the heat transfer efficiency between the fin and the flat tube 100.

[0064] In one embodiment, as shown in FIG. 1 to FIG. 4 , a bearing plate 41 is provided on a side of the third support member 4 away from the first groove edge 111 , and the bearing plate 41 is provided parallel to the fin body 1 .

[0065] The third support member 4 is formed by folding the cut material, and a supporting plate 41 is provided on the top of the third support member 4. The supporting plate 41 is a plate-shaped structure that can improve the stability of the supporting structure of the third support member 4 on the adjacent fins.

[0066] In one embodiment, as shown in FIG. 1 to FIG. 4 , a heat dissipation bridge 12 is provided on the fin body 1 . The heat dissipation bridge 12 can form an enhanced heat exchange structure on the fin body 1 , thereby improving the heat exchange efficiency of the fin.

[0067] The heat dissipation bridge 12 is extended along the length direction of the fin body 1, and multiple third support members 4 are provided at both ends of the heat dissipation bridge 12. That is, multiple support members are provided at both ends of the heat dissipation bridge 12 along the first direction, which is conducive to improving support stability.

[0068] In addition, a convex bump 13 is provided on the fin body 1 , and the convex bump 13 can also form an enhanced heat exchange structure on the fin body 1 , thereby further improving the heat exchange efficiency of the fin.

[0069] In one embodiment, as shown in Figures 1-4 , the orthographic projection of the heat dissipation bridge 12 on a reference plane and the orthographic projection of the first support member 2 on the reference plane at least partially overlap; the reference plane is perpendicular to the length direction of the fin body 1 and parallel to the width direction of the fin body 1. After passing through the first support member 2, the gas flows toward the heat dissipation bridge 12 and out from the side of the second support member 3. Before flowing into the heat dissipation bridge 12, the first support member 2 can disturb the gas, thereby improving heat exchange efficiency.

[0070] FIG5 is a schematic structural diagram showing a stacked arrangement of fins according to an embodiment of the present disclosure; FIG6 is a schematic structural diagram showing an installation diagram of fins and flat tubes according to an embodiment of the present disclosure.

[0071] As shown in FIG5-FIG6 , this embodiment provides a heat exchanger including a flat tube 100 and the above-mentioned fins. The flat tube 100 is disposed in the mounting groove 11 of the fin.

[0072] In the heat exchanger provided in this embodiment, when the flat tube 100 is inserted into the installation groove 11, the adjacent fins can be effectively supported by the first support member 2 and the second support member 3. When the flat tube 100 and the fin are welded by furnace welding, the stability of the fin structure can be enhanced by the first support member 2 and the second support member 3. With the assistance of the first support member 2 and the second support member 3 of the fin, the phenomenon of inverted fin adhesion can be effectively prevented.

[0073] As shown in Figures 5 and 6, the heat exchanger includes a plurality of fins arranged along the length of the flat tube 100. The two first support members 2 of at least some adjacent fins are staggered along the length of the fin body 1; and / or the two second support members 3 of at least some adjacent fins are staggered along the length of the fin body 1.

[0074] In the embodiment of the present application, since the first support member 2 and / or the second support member 3 of the fin are staggered in the length direction, the support member has a supporting function at different positions in the length direction of the fin body 1, which is beneficial to improving the stability of the overall structure after multiple fins are stacked.

[0075] Furthermore, the first support members 2 and / or the second support members 3 of the plurality of fins are evenly staggered in the length direction of the fin body 1, which can further improve the stability of the overall structure after the plurality of fins are stacked.

[0076] It should be noted that the fins shown in the drawings and described in this specification are only one example of the principles of the present disclosure. It should be clearly understood by those skilled in the art that the principles of the present disclosure are not limited to any details or any components of the devices shown in the drawings or described in the specification.

[0077] It should be understood that the present disclosure is not limited in its application to the detailed structure and arrangement of the components set forth in this specification. The present disclosure is capable of other embodiments and can be implemented and carried out in a variety of ways. The aforementioned variations and modifications fall within the scope of the present disclosure. It should be understood that the present disclosure disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All of these different combinations constitute multiple alternative aspects of the present disclosure. The embodiments described in this specification illustrate the best known ways to implement the present disclosure and will enable those skilled in the art to utilize the present disclosure.

[0078] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the inventions disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and illustrative embodiments are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

[0079] It should be understood that the present disclosure is not limited to the precise structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of protection of the present disclosure is limited only by the appended claims.

Claims

1. A fin, comprising: A fin body, wherein the fin body is provided with a plurality of mounting grooves at intervals along the length direction of the fin body; A first support member is provided at one end of the fin body in the width direction; A second support member is provided at the other end of the fin body in the width direction; Wherein, the first support member and the second support member at least partially overlap along the width direction of the fin body.

2. The fin according to claim 1, wherein: The first supporting member and the second supporting member have the same height.

3. The fin according to claim 1, wherein: The fin body is provided with a plurality of third supporting members along the periphery of the mounting groove; Wherein, a plurality of the third support members are symmetrically arranged on both sides of the mounting groove along the length direction of the fin body; and / or The plurality of third support members are symmetrically arranged on both sides of the mounting groove along the width direction of the fin body.

4. The fin according to claim 3, wherein: The third support member is an integral structure, the length of the third support member along the width direction of the fin body is L, and the width of the mounting groove along the length direction of the fin body is B; wherein L=1 / 2B; or the third support member is a split structure, the third support member includes a plurality of sub-support members arranged along the width direction of the fin body, a gap is provided between two adjacent sub-support members, the distance of the gap along the width direction of the fin body is A, and A<3mm.

5. The fin according to claim 1, wherein: A heat dissipation bridge is provided on the fin body; Wherein, the heat dissipation bridge is extended along the length direction of the fin body.

6. The fin according to claim 5, wherein: The orthographic projection of the heat dissipation bridge on the reference plane and the orthographic projection of the first support member on the reference plane at least partially overlap; Wherein, the reference plane is perpendicular to the length direction of the fin body, and the reference plane is parallel to the width direction of the fin body.

7. The fin according to claim 3, wherein: The mounting groove comprises two first groove edges arranged opposite to each other and a second groove edge arranged between the two first groove edges; Wherein, the third support member is connected to the first groove edge.

8. The fin according to claim 7, wherein: A bearing plate is disposed on a side of the third support member away from the first groove edge, and the bearing plate is disposed parallel to the fin body.

9. The fin according to claim 1, wherein: The first supporting member and the second supporting member have different heights.

10. The fin according to claim 1, wherein: The first support member includes a first connecting plate and a first supporting plate, wherein the first connecting plate is extended along the thickness direction of the fin body, one end of the first connecting plate is connected to the fin body, and the first supporting plate is connected to the other end of the first connecting plate and is arranged parallel to the fin body; The second support member includes a second connecting plate and a second supporting plate, the second connecting plate is extended along the thickness direction of the fin body, one end of the second connecting plate is connected to the fin body, and the second supporting plate is connected to the other end of the second connecting plate and is arranged parallel to the fin body.

11. The fin according to claim 10, wherein: The first support plate extends from the first connecting plate along the length direction of the fin body, and the second support plate extends from the second connecting plate along the length direction of the fin body.

12. The fin according to claim 11, wherein: An extending direction of the first support plate is the same as or opposite to an extending direction of the second support plate.

13. The fin according to claim 11, wherein: There are a plurality of first support members, which are arranged at intervals along the length direction of the fin body, and the first support plates of adjacent first support members extend in the same or opposite directions.

14. The fin according to claim 11, wherein: There are a plurality of second support members, which are arranged at intervals along the length direction of the fin body, and the second support plates of adjacent second support members extend in the same direction or in opposite directions.

15. The fin according to claim 1, wherein: The other end of the fin body in the width direction has a drainage structure, and the drainage structure has a plurality of folded parts. The plurality of folded parts are distributed in sequence along the width direction of the fin body to form a corrugated structure. The corrugated structure extends along the length direction of the fin body, and the second support member is arranged at the folded part away from the mounting groove.

16. The fin according to any one of claims 1 to 15, wherein: The first support member and the second support member are formed by folding the cut material on the fin body.

17. A heat exchanger, wherein: It comprises a flat tube and the fin according to any one of claims 1 to 16, wherein the flat tube is arranged in the mounting groove of the fin.

18. The heat exchanger according to claim 17, wherein: The fins are provided in plurality, and the plurality of fins are spaced apart along the length direction of the flat tube, and at least two of the first supporting members of some adjacent fins are staggered in the length direction of the fin body; and / or the fins are provided in plurality, and the plurality of fins are spaced apart along the length direction of the flat tube, and at least two of the second supporting members of some adjacent fins are staggered in the length direction of the fin body.

19. The heat exchanger according to claim 17, wherein: There are multiple fins, and the multiple fins are spaced apart along the length direction of the flat tube; one end of one of the two adjacent fins along the width direction of the fin body abuts against the first supporting member of the other fin, and the other end of one of the two adjacent fins along the width direction of the fin body is clamped on the second supporting member of the other fin.

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