Fin and Heat Exchanger Having Same

Abstract

A fin and a heat exchanger having same are provided. The fin includes a first connecting segment, the second connecting segment is used for being bent, and the second connecting segment has a first connecting end and a second connecting end opposite each other, and the first connecting end is arranged on the side of the second connecting end away from the third connecting segment; an extension direction from the first connecting end to the second connecting end is a length direction of the second connecting segment; and along the length direction of the second connecting segment, the second connecting segment can be bent and deformed, so that the second connecting segment of a straight-strip structure forms an arcuate-strip structure after being bent.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure claims priority to patent application with the application No. 202210655643.4, filed to the China National Intellectual Property Administration on 10 Jun. 2022 and entitled “Fin and Heat Exchanger Having Same”, claims priority to patent application with the application No. 202221460859.7, filed to the China National Intellectual Property Administration on 10 Jun. 2022 and entitled “Fin and Heat Exchanger Having Same”, claims priority to patent application with the application No. 202210654620.1, filed to the China National Intellectual Property Administration on 10 Jun. 2022 and entitled “Fin and Heat Exchanger Having Same”, and claims priority to patent application with the application No. 202221471334.3, filed to the China National Intellectual Property Administration on 10 Jun. 2022 and entitled “Fin and Heat Exchanger Having Same”.

TECHNICAL FIELD

The present disclosure relates to the technical field of bending of a fin, and in particular to a fin and a heat exchanger having same.

BACKGROUND

Currently, some heat exchangers in the related art each have a bent segment, and a flat tube of the heat exchanger is twisted in a reserved bending region for bending of the flat tube. In order to avoid the difficulty in bending a fin and unstable bending of the fin during bending, generally no fin is provided in the reserved bending region of the flat tube, and thus a fin-free region is formed in the bending segment of the heat exchanger.

However, a large gap may appear in the fin-free region, thereby causing air leakage and affecting the heat exchange performance.

SUMMARY

A main object of some embodiments of the present disclosure is to provide a fin and a heat exchanger having same, so as to solve the technical problem of difficulty in bending a fin in the related art.

In order to achieve the object, according to an aspect of some embodiments of the present disclosure, a fin is provided, including:

a first connecting segment, a second connecting segment and a third connecting segment, wherein the second connecting segment is disposed between the first connecting segment and the third connecting segment, the second connecting segment is configured to being bent, and the second connecting segment has a first connecting end and a second connecting end opposite each other, and the first connecting end is disposed on a side of the second connecting end away from the third connecting segment; an extension direction from the first connecting end to the second connecting end is a length direction of the second connecting segment; and along the length direction of the second connecting segment, the second connecting segment can be bent and deformed, so that the second connecting segment of a straight-strip structure forms an arcuate-strip structure after being bent.

In some embodiments, the second connecting segment has a corrugated structure; the second connecting segment includes a plurality of connecting bodies, a plurality of wave crests and a plurality of wave troughs, and two ends of each of the plurality of connecting bodies are respectively connected with a wave crest and a wave trough; a direction from a valley position of the second connecting segment to a peak position of the second connecting segment is a height direction of the second connecting segment, and both the height direction of the second connecting segment and the length direction of the second connecting segment are perpendicular to a width direction of the second connecting segment;

wherein one of the plurality of connecting bodies is provided with a first opening window, the first opening window is a strip-shaped opening, and the first opening window extends in the width direction of the second connecting segment.

In some embodiments, there is a plurality of first opening windows, and the plurality of first opening windows are disposed on one of the plurality of connecting bodies at intervals.

In some embodiments, the plurality of first opening windows are disposed at intervals along the length direction of the second connecting segment; or,

the plurality of first opening windows are disposed at intervals along the width direction of the second connecting segment; or,

the plurality of first opening windows form a plurality of first opening window groups, each of the plurality of first opening window groups includes a plurality of first opening windows disposed at intervals along the length direction of the second connecting segment, and the plurality of first opening window groups are disposed at intervals along the width direction of the second connecting segment.

In some embodiments, one of the plurality of connecting bodies is further provided with a second opening window, the second opening windows and the first opening windows are disposed at intervals, the second opening window is a strip-shaped opening, and the second opening window extends in the length direction of the second connecting segment.

In some embodiments, there is a plurality of second opening windows, and the plurality of second opening windows are disposed at intervals.

In some embodiments, the plurality of second opening windows are disposed at intervals along the width direction of the second connecting segment.

In some embodiments, the second opening windows are disposed at ends of the first opening windows.

In some embodiments, there is a plurality of first opening windows, the plurality of first opening windows form a plurality of first opening window groups, each of the plurality of first opening window groups includes a plurality of first opening windows disposed at intervals along the length direction of the second connecting segment, and the plurality of first opening window groups are disposed at intervals along the width direction of the second connecting segment;

at least one second opening window is disposed between two adjacent first opening window groups of the plurality of first opening window groups; or,

there is a plurality of second opening windows, at least one second opening window of the plurality of second opening windows is disposed at one end of the plurality of first opening window groups, and at least one second opening window of the plurality of second opening windows is disposed at an other end of the plurality of first opening window groups.

In some embodiments, the first connecting segment, the second connecting segment and the third connecting segment are all of corrugated structures, the first connecting segment has a first wave pitch Fp₁, the second connecting segment has a second wave pitch Fp₂, and the third connecting segment has a third wave pitch Fp₃;

wherein Fp₂>Fp₁ and Fp₂>Fp₃.

In some embodiments, the length direction of the second connecting segment and the height direction of the second connecting segment are both perpendicular to the width direction of the second connecting segment, and along the width direction of the second connecting segment, a width of the second connecting segment is Fw₂, a width of the first connecting segment is Fw₁, and a width of the third connecting segment is Fw₃;

wherein Fw₁=Fw₂=Fw₃.

In some embodiments, a length of the second connecting segment is BL, and a width of the second connecting segment is Fw₂;

wherein 1.5Fw₂≤BL≤5.5Fw₂.

In some embodiments, the width of the second connecting segment is Fw₂, and a bending radius of the second connecting segment is R_bending;

wherein 2Fw₂≤R_bending≤7Fw₂.

In some embodiments, the first connecting segment and the second connecting segment are disposed at an interval; and/or,

the third connecting segment and the second connecting segment are disposed at an interval.

In some embodiments, a height of the first connecting segment is Fh₁, a height of the second connecting segment is Fh₂, and a height of the third connecting segment is Fh₃;

wherein Fh₂≤Min(Fh₁, Fh₃).

In some embodiments, Fh₁=Fh₃.

In some embodiments, Fp₁=Fp₃.

According to another aspect of some embodiments of the present disclosure, provided is a heat exchanger, the heat exchanger including the fin as provided above.

In some embodiments, the heat exchanger further includes:

an inlet header, disposed at one end of the fin, a radius of the inlet header being R₁; and

an outlet header, disposed at the other end of the fin, a radius of the outlet header being R₂;

wherein Fw₂<R₁<R₂.

By applying the technical solutions in some embodiments of the present disclosure, the first opening window on the second connecting segment extends in the width direction of the second connecting segment, and thus the fin has a gap extending in the width direction of the second connecting segment, then when the second connecting segment is bent in the length direction, adaptive extension and retraction deformation can be achieved at the first opening window; that is, the first opening window can be extended and retracted along with the bending deformation of the second connecting segment, thereby facilitating bending of the second connecting segment and forming an arcuate-strip structure. That is to say, the arrangement of the first opening window effectively increases the bending deformation amount of the fin, thereby preventing the structure of the fin from being severely twisted and deformed during the bending deformation; in addition, the first opening windows can also facilitate effective improvement of the heat exchange effect.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings of the description, constituting a part of some embodiments of the present disclosure, are used for providing further understanding of some embodiments of the present disclosure. The illustrative embodiments of the present disclosure and illustrations thereof are used for explaining some embodiments of the present disclosure, rather than constitute inappropriate limitation on some embodiments of the present disclosure. In the drawings:

FIG. 1 illustrates a front view of a heat exchanger having fins before being bent provided in accordance with embodiments of the present disclosure;

FIG. 2 illustrates a top view of a heat exchanger having fins before being bent provided in accordance with embodiments of the present disclosure;

FIG. 3 illustrates a schematic structural view of a second connecting segment provided with a window-opening structure provided in accordance with embodiments of the present disclosure;

FIG. 4 illustrates a schematic structural view of a first connecting segment provided with a window-opening structure provided in accordance with some embodiments of the present disclosure;

FIG. 5 illustrates a schematic structural view of a second connecting segment provided with a window-opening structure provided in accordance with some other embodiments of the present disclosure;

FIG. 6 illustrates a schematic structural view of a second connecting segment provided with a window-opening structure provided in accordance with still some other embodiments of the present disclosure;

FIG. 7 illustrates a schematic view of one direction after a heat exchanger having fins is bent in a double-row structure provided according to embodiments of the present disclosure;

FIG. 8 shows a schematic partially enlarged view in FIG. 7;

FIG. 9 illustrates a schematic view after a heat exchanger having fins is bent in a double-row structure provided according to embodiments of the present disclosure;

FIG. 10 illustrates a front view after a heat exchanger having fins is bent in a double-row structure provided according to embodiments of the present disclosure;

FIG. 11 illustrates a schematic structural view after a heat exchanger having fins is bent in an A-shaped structure provided according to embodiments of the present disclosure;

FIG. 12 illustrates a front view after a heat exchanger having fins is bent in an A-shaped structure provided according to embodiments of the present disclosure;

FIG. 13 illustrates a left view after a heat exchanger having fins is bent in an A-shaped structure provided according to embodiments of the present disclosure;

FIG. 14 illustrates a schematic structural view of a connecting body provided with a plurality of second opening windows provided in accordance with some embodiments of the present disclosure; and

FIG. 15 illustrates a schematic structural view of a connecting body provided with a plurality of second opening windows provided in accordance with some other embodiments of the present disclosure.

The drawings include the following reference signs:

10. Fin; 11. First connecting segment; 12. Second connecting segment; 121. Connecting body; 13. Third connecting segment; 141. First opening window; 142. Second opening window; 143. Third window; 20. Inlet header; 30. Outlet header; 40. Heat exchange flat tube.

DETAILED DESCRIPTION OF THE EMBODIMENTS

It is to be noted that embodiments in the present disclosure and features in the embodiments may be combined with one another without conflicts. Some embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in FIG. 1 to FIG. 6, Embodiment I of the present disclosure provides a fin 10, the fin 10 including a first connecting segment 11, a second connecting segment 12 and a third connecting segment 13, wherein the second connecting segment 12 is disposed between the first connecting segment 11 and the third connecting segment 13, the second connecting segment 12 is used for being bent, and the second connecting segment 12 has a first connecting end and a second connecting end opposite each other, and the first connecting end is disposed on the side of the second connecting end away from the third connecting segment 13; and an extension direction from the first connecting end to the second connecting end is a length direction of the second connecting segment 12. Along the length direction of the second connecting segment 12, the second connecting segment 12 can be bent and deformed, so that the second connecting segment 12 of a straight-strip structure forms an arcuate-strip structure after being bent, which may also be understood as: the second connecting segment 12 is a straight-strip structure before being bent, and the second connecting segment 12 is an arcuate-strip structure after being bent.

Such a structure can facilitate adaptive bending of the second connecting segment 12 in the length direction, to form an arcuate-strip structure, thereby preventing the second connecting segment 12 from being severely twisted and deformed.

The second connecting segment 12 has a corrugated structure. The second connecting segment includes a plurality of connecting bodies 121, a plurality of wave crests and a plurality of wave troughs, and two ends of each of the plurality of connecting bodies 121 are respectively connected with a wave crest and a wave trough. The direction from a valley position of the second connecting segment 12 to a peak position of the second connecting segment 12 is a height direction of the second connecting segment 12, and both the height direction of the second connecting segment 12 and the length direction of the second connecting segment 12 are perpendicular to a width direction of the second connecting segment 12. A connecting body 121 is provided with a first opening window 141, the first opening window 141 is a strip-shaped opening, and the first opening window 141 extends in the width direction of the second connecting segment 12. In some embodiments, FW is an abbreviation for English words corresponding to the width of the fin, FW represents width of the fin, and in the figures, a FW direction represents the width direction.

By using the fin 10 provided by this embodiment, the first opening windows 141 on the connecting body 121 extend in the width direction of the second connecting segment 12, and thus the fin 10 has a gap extending in the width direction of the second connecting segment 12, then when the connecting body 121 is bent in the length direction of the second connecting segment 12, as the extension direction of the first opening windows 141 is perpendicular to the length direction of the second connecting segment 12, the first opening windows 141 can be deformed along with the deformation of the connecting body 121 in the length direction of the second connecting segment 12. That is to say, when the connecting body 121 is bent in the length direction of the second connecting segment 12, adaptive extension and retraction deformation are achieved at the first opening windows 141; that is, the first opening windows 141 can be extended and retracted along with the bending deformation of the connecting body 121, thereby facilitating bending of the second connecting segment and forming an arcuate-strip structure. Hence, by adding the window-opening structures on the fin 10, the bending deformation amount of the fin is effectively increased, facilitating bending of the second connecting segment 12 in the length direction of the second connecting segment 12, thereby preventing the structure of the fin from being severely twisted and deformed during the bending deformation. Therefore, the first opening windows 141 of the described structure may be adaptively deformed, so as to facilitate bending of the second connecting segment 12 and forming an arcuate-strip structure, and also facilitate maintenance of the window-opening shape of the first opening windows 141 to a great degree when the second connecting segment 12 is bent, thereby avoiding waste of a bending action force. In addition, the first opening windows 141 can also facilitate effective improvement of the heat exchange effect. In addition, by providing the segment structure to be bent, the occurrence of a region without a fin 10 can also be avoided, thereby reducing an air leakage situation and effectively ensuring the heat exchange performance. The fin 10 in the present embodiment can increase the windward area of the product, the bent region also has the fin 10 to enhance heat exchange, and the overall heat exchange capacity is enhanced; and the corrosion resistance capability of the product is enhanced, the service life of the product is prolonged, and the reliability is improved. The overall aesthetics of the product is ensured. The bending processing is convenient, and the efficiency is high.

It should be noted that, during bending, a bending roller is in contact with a heat exchange flat tube 40 of a heat exchanger, the heat exchange flat tube 40 is bent and bent into a U-shaped structure, and the heat exchange flat tube 40 has certain twisting and deformation at the U-shape, so that a plate body of the heat exchange flat tube 40 having a plate-shaped structure can form effective shielding. Moreover, the heat exchange flat tube 40 drives the fin 10 connected to the heat exchange flat tube 40 to be bent. The second connecting segment 12 is bent, so that the second connecting segment 12 is bent to be U-shaped, and the second connecting segment 12 has certain twisting and distortion, so that the second connecting segment 12 can form effective shielding. As shown in FIG. 7 to FIG. 10, the heat exchanger is bent into a double-row structure. Or as shown in FIG. 11 to FIG. 13, the heat exchanger is bent into an A-shaped structure.

In this embodiment, the first connecting segment 11 and the third connecting segment 13 may both be connected to the second connecting segment 12. Alternatively, the first connecting segment 11 and the third connecting segment 13 are both spaced from the second connecting segment 12, so that the second connecting segment 12 can have a certain bending deformation space during bending, thereby facilitating bending deformation of the second connecting segment 12.

In this embodiment, there is a plurality of first opening windows 141, and the plurality of first opening windows 141 are disposed on the connecting body 121 at intervals. By such a structural arrangement, the plurality of first opening windows 141 can facilitate further improvement of the heat exchange effect, and also facilitate bending formation of the connecting body 121 and the second connecting segment 12, thereby preventing the first opening windows 141 from being deformed when being bent, avoiding waste of a bending action force, and facilitating smooth bending.

In some embodiments, the plurality of first opening windows 141 can be disposed at intervals along the length direction of the second connecting segment 12, so as to optimize the arrangement of the first opening windows 141, increase the number of the first opening windows 141, and facilitate effective heat exchange. Moreover, also, the situation that the first opening windows 141 are deformed due to the bending of the second connecting segment 12 will not occur.

In some other embodiments, the plurality of first opening windows 141 can be disposed at intervals along the width direction of the second connecting segment 12. By such a structural arrangement, the plurality of first opening windows 141 can be disposed side by side along the width direction of the second connecting segment 12, thereby preventing structural instability caused by the first opening windows 141 extending too long along the width direction of the second connecting segment 12, and improving structural stability of the second connecting segment 12.

In still some other embodiments, the plurality of first opening windows 141 form a plurality of first opening window groups, each of the plurality of first opening window groups includes a plurality of first opening windows 141 disposed at intervals along the length direction of the second connecting segment 12, and the plurality of first opening window groups are disposed at intervals along the width direction of the second connecting segment 12. Such a structure of the plurality of first opening window groups can facilitate increase of the arrangement range and positions of the first opening windows 141, and also will not make the first opening windows 141 greatly deformed during bending, thereby facilitating effective bending. In addition, by adopting such a structure layout, the structural strength of the second connecting segment 12 can also be effectively ensured.

In this embodiment, the connecting body 121 is further provided with second opening windows 142, the second opening windows 142 and the first opening windows 141 are disposed at intervals, the second opening windows 142 are strip-shaped openings, and the second opening windows 142 extend in the length direction of the second connecting segment 12. By such a structural arrangement, by providing the second opening windows 142, the structural strength of the connecting body 121 and the second connecting segment 12 in the length direction can be ensured, the resistance of the bent portion is increased, and uncontrolled bending transition is avoided.

In this embodiment, there is a plurality of second opening windows 142, and the plurality of second opening windows 142 are disposed at intervals, so as to better avoid bending transitional deformation of the second connecting segment 12.

In this embodiment, the plurality of second opening windows 142 are disposed at intervals along the width direction of the second connecting segment 12. By such a structural arrangement, the structural strength of the second connecting segment 12 in the length direction can be better ensured, and failure of the fin 10 due to bending transitional deformation is avoided.

In this embodiment, the second opening windows 142 are provided at ends of the first opening windows 141. Such a structural arrangement can facilitate effective improvement of the structural strength by the second opening windows 142, reduce uncontrolled bending deformation, and also optimize the structure layout of the window-opening structure, thereby facilitating effective heat exchange.

In the present embodiment, there is a plurality of first opening windows 141, the plurality of first opening windows 141 form a plurality of first opening window groups, each of the plurality of first opening window groups includes a plurality of first opening windows 141 disposed at intervals along the length direction of the second connecting segment 12, and the plurality of first opening window groups are disposed at intervals along the width direction of the second connecting segment 12. At least one second opening window 142 can be disposed between two adjacent first opening window groups of the plurality of first opening window groups, so as to effectively ensure the structural strength and avoid failure due to bending deformation. Alternatively, there is a plurality of second opening windows 142, at least one second opening window 142 of the plurality of second opening windows 142 is disposed at one end of the plurality of first opening window groups, and at least one second opening window 142 of the plurality of second opening windows 142 is disposed at the other end of the plurality of first opening window groups, so as to effectively ensure the structural strength of the two ends and avoid uncontrolled bending.

As shown in FIG. 14 and FIG. 15, only a plurality of second opening windows 142 are provided on a connecting body 121, and the plurality of second opening windows 142 are disposed at intervals along the width direction of the second connecting segment 12. The width of the second opening windows 142 gradually increases or decreases along the length direction of the second connecting segment 12. The bending degree corresponding to the end with a larger width of the second opening window 142 is greater than the bending degree corresponding to the end with a smaller width of the second opening window 142, so as to ensure the structural stability of the connecting body 121 and facilitate smooth bending.

In this embodiment, the first connecting segment 11 and the third connecting segment 13 are both of corrugated structures, the first connecting segment 11 has a first wave pitch Fp₁, the second connecting segment 12 has a second wave pitch Fp₂, and the third connecting segment 13 has a third wave pitch Fp₃; where Fp₂>Fp₁ and Fp₂>Fp₃. Such a structural arrangement can facilitate bending deformation of the fin 10. In this way, a product of the fin 10 is bent in a fin-sparse region, so that the bending feasibility is high, and the fin can be bent to form a certain angle or be folded in half. By using the fin 10 provided in this embodiment, the second wave pitch is greater than the first wave pitch, and the second wave pitch is greater than the third wave pitch, so that the second connecting segment 12 forms a fin-sparse region, and the corrugation of the fin 10 at the second connecting segment 12 is gently bent, thereby reducing the difficulty of process processing, facilitating bending, avoiding large stress during bending caused by a large bending degree of the fin 10, and avoiding damage to the fin 10 of the second connecting segment 12. In addition, the heat exchange area on an air side can be improved by the second connecting segment 12, thereby improving the heat exchange capacity of the whole heat exchanger. Therefore, the fin 10 provided in this embodiment can solve the technical problem of difficulty in bending the fin 10 in the related art.

It should be noted that, during bending, a bending roller is in contact with the heat exchange flat tube 40 of the heat exchanger, the heat exchange flat tube 40 is bent and bent into a U-shaped structure, and the heat exchange flat tube 40 has certain twisting and deformation at the U-shape, so that a plate body of the heat exchange flat tube 40 having a plate-shaped structure can form effective shielding. Moreover, the heat exchange flat tube 40 drives the fin 10 connected to the heat exchange flat tube 40 to be bent. In some embodiments, the second connecting segment 12 is bent, so that the second connecting segment 12 is bent to be U-shaped, and the second connecting segment 12 has certain twisting and distortion, so that the second connecting segment 12 can form effective shielding. As shown in FIG. 7 to FIG. 10, the heat exchanger is bent into a double-row structure. Or as shown in FIG. 11 to FIG. 13, the heat exchanger is bent into an A-shaped structure.

In this embodiment, 2Fp₁≤Fp₂≤6Fp₁ and 2Fp₁≤Fp₂≤6Fp₁, so that the second connecting segment 12 is within a suitable range, facilitating bending of the second connecting segment 12.

It should be noted that, after the second connecting segment 12 is bent, the second connecting segment 12 is partially twisted, and collapse may occur between two adjacent fins.

In the present embodiment, the length direction of the second connecting segment 12 and the height direction of the second connecting segment 12 are both perpendicular to the width direction of the second connecting segment 12, and along the width direction of the second connecting segment 12, the width of the second connecting segment 12 is Fw₂, the width of the first connecting segment 11 is Fw₁, and the width of the third connecting segment 13 is Fw₃; where Fw₁=Fw₂=Fw₃. Such a structural arrangement facilitates production and manufacturing, and reduces the production difficulty.

In this embodiment, the length of the second connecting segment 12 is BL (BL is an abbreviation for English word corresponding to bending length), and the width of the second connecting segment 12 is Fw₂; where 1.5Fw₂≤BL≤5.5Fw₂. Such a structural arrangement can enable the second connecting segment 12 to have a sufficient extension length, so that the corrugation of the second connecting segment 12 is bent gently, thereby facilitating bending of the second connecting segment 12 in the length direction, and facilitating production and manufacturing. In particular, when the length is less than 1.5Fw₂, a case in which the bending damages the fin 10 easily occurs; and when the length is greater than 5.5Fw₂, a too long length of the second connecting segment 12 (the second connecting segment 12 is understood as a fin-sparse segment) may in turn affect the heat exchange capacity per unit area of the fin 10, so that the heat exchange capacity is reduced. Fw is an abbreviation for English words corresponding to the width of the fin, Tw is an abbreviation for English words corresponding to the width of the flat tube, and Fw and Tw respectively represent width values.

In the present embodiment, the width of the second connecting segment 12 is Fw₂, and a bending radius of the second connecting segment 12 is R_bending; where 2Fw₂≤R_bending≤7Fw₂. Such a structural arrangement can facilitate effective bending of the second connecting segment 12, thereby avoiding the inconvenience of bending caused by an excessively small bending radius, and also avoiding the situation of affecting the overall layout due to an excessively large bending radius. In addition, setting the bending radius to be within the size range can reduce the difficulty of process processing.

In some embodiments, the first connecting segment 11 and the second connecting segment 12 are disposed at an interval, so that when the second connecting segment 12 is bent, there is a certain extension space in a gap between the first connecting segment 11 and the second connecting segment 12, thereby preventing deformation restriction of the first connecting segment 11 on the second connecting segment 12, and facilitating bending deformation at a portion where the second connecting segment 12 is close to the first connecting segment 11. Alternatively, the third connecting segment 13 and the second connecting segment 12 are disposed at an interval, so that when the second connecting segment 12 is bent, there is a certain extension space in a gap between the third connecting segment 13 and the second connecting segment 12, thereby preventing deformation restriction of the third connecting segment 13 on the second connecting segment 12, and facilitating bending deformation at a portion where the second connecting segment 12 is close to the third connecting segment 13. Alternatively, the first connecting segment 11 and the third connecting segment 13 are both spaced from the second connecting segment 12, so that when the second connecting segment 12 is bent, the second connecting segment can have certain extension spaces in a gap between the first connecting segment 11 and the second connecting segment 12 and a gap between the third connecting segment 13 and the second connecting segment 12, thereby preventing deformation restriction of the first connecting segment 11 and the third connecting segment 13 on the second connecting segment 12, and facilitating overall deformation of the second connecting segment 12.

In this embodiment, the first connecting segment 11 and the third connecting segment 13 are both spaced from the second connecting segment 12 to facilitate bending deformation of the second connecting segment 12. The distance between the first connecting segment 11 and the second connecting segment 12 is Gap₁, and the distance between the third connecting segment 13 and the second connecting segment 12 is Gap₂.

In this embodiment, there is a first gap Gap₁ between the first connecting segment 11 and the second connecting segment 12, and there is a second gap Gap₂ between the second connecting segment 12 and the third connecting segment 13; where Gap₁>0; and/or, Gap₂>0.

The height of the first connecting segment 11 is Fh₁, the height of the second connecting segment is Fh₂, and the height of the third connecting segment 13 is Fh₃; where Fh₂≤Min(Fh₁, Fh₃). Such a structural arrangement can facilitate forming a height difference between the second connecting segment 12 and the first connecting segment 11, or between the second connecting segment 12 and the third connecting segment 13, and the arrangement of the height difference also facilitates bending of the second connecting segment 12. Moreover, the second connecting segment 12 is not welded to the flat tube, thereby facilitating bending.

In some embodiments, Fp₁=Fp₃ may be made. Such a structural arrangement facilitates forming the first connecting segment 11 and the third connecting segment 13 into the same structure, and facilitates production and manufacturing.

In a first embodiment, the fin 10 is a whole fin 10 integrated with the body heat exchanger. However, in order to facilitate process processing and production, generally Fp₂>Fp₁ and Fp₂>Fp₃, meanwhile Fp₁=Fp₃. For process processing and production feasibility, generally Fw₁=Fw₂=Fw₃=Tw, and Gap₁≥0 and Gap₂≥0.

For the convenience of process bending, it is proved by a lot of experiments that generally, 1.5Tw≤BL (the length of the fin-sparse region or referred to as the length of the bent region)≤5.5Tw) is an optimal range.

The bending radius of the product and the width of the flat tube have a certain relationship, and satisfy: 2Tw≤R_bending (bending radius)≤7Tw.

An included angle θ of the product after being bent can range from 0° to 180°.

The fin 10 in the fin-sparse region has a height Fh₂≤Fh₁ and Fh₂≤Fh₃. Since the height of the fin 10 is reduced, it is allowed that the welding rate of the middle bent fin-sparse region is reduced, or the fin 10 is not completely welded to the flat tube.

In this way, the windward area of the product can be increased, the bent region also has the fin 10 to enhance heat exchange, and the overall heat exchange capacity is enhanced; and the corrosion resistance capability (no fin-free flat tube being exposed) of the product is enhanced, the service life of the product is prolonged, and the reliability is improved. The overall aesthetics of the product is ensured. The whole single fin 10 is convenient for one-time processing of the fin 10 of a device; and the product is bent in a fin-sparse region, so that the bending feasibility is high, and the fin can be bent to form a certain angle or be folded in half.

In a second embodiment, the heights of fins 10 on two sides are consistent, the fin pitches on the two sides are consistent, and the height of the fins 10 in the middle is reduced.

Fp₂>Fp₁ and Fp₂>Fp₃, meanwhile Fp₁=Fp₃; Fw₂<Fw₁=Fw₃, and Gap₁≥0 and Gap₂≥0.

In a third embodiment, the heights of fins 10 on two sides are consistent, the fin pitches on the two sides are consistent, and the height of the fins 10 in the middle is increased.

Fp₂>Fp₁ and Fp₂>Fp₃, meanwhile Fp₁=Fp₃; and Fw₂<Fw₁=Fw₃.

In a fourth embodiment, the heights of fins 10 on two sides are not consistent, the fin pitches on the two sides are consistent, and the height of the fins 10 in the middle is less than or equal to that of the fin 10 having the lowest height on the two sides.

Fp₂>Fp₁ and Fp₂>Fp₃, meanwhile Fp₁=Fp₃; and Fw₂≤Min(Fw₁, Fw₃).

In a fifth embodiment, the heights of fins 10 on two sides are not consistent, the fin pitches on the two sides are consistent, and the height of the fins 10 in the middle is higher than that of the highest fin 10 on the two sides.

Fp₂>Fp₁ and Fp₂>Fp₃, meanwhile Fp₁=Fp₃; and Fw₂≥Max(Fw₁, Fw₃).

In a sixth embodiment, the heights of fins 10 on two sides are not consistent, the fin pitches on the two sides are consistent, and the height of the fins 10 in the middle is greater than that of the lowest fin 10 on the two sides, and less than that of the highest fin 10 on the two sides.

Fp₂>Fp₁ and Fp₂>Fp₃, meanwhile Fp₁=Fp₃; and Min(Fw₁, Fw₃)<Fw₂<Max(Fw₁, Fw₃).

In a seventh embodiment: embodiments meeting the requirement of any alternative solution above and allowing the pitches on the two sides to be inconsistent are within the scope of protection of the present patent.

Fp₂>Fp₁ and Fp₂>Fp₃, meanwhile Fp₁>Fp₃ or Fp₁<Fp₃.

In an eighth embodiment: the fins 10 in the bent region are gradually sparse from the middle to the two ends, so as to cope with the deformation amount in the bent region.

As shown in FIG. 3 to FIG. 6 (the Tw direction in the figures is the width direction of the fin 10), in all the embodiments above, window-opening structures are provided on all of the first connecting segment 11, the second connecting segment 12 and the third connecting segment 13 (the window-opening structures includes first opening windows 141, second opening windows 142 and third opening windows 143); and the opening windows of the window-opening structures on the first connecting segment 11 and the third connecting segment 13 both extend in a direction perpendicular to the width direction of the fin 10. Some windows of the window-opening structure on the second connecting segment 12 extend in a direction perpendicular to the width direction of the fin 10, and some other windows of the window-opening structure of the second connecting segment 12 extend in the width direction of the fin 10; and the windows extending in the width direction of the fin 10 can facilitate bending of the second connecting segment 12, so as to better adapt to the deformation of the fin 10 in the length direction.

In the present embodiment, third opening windows 143 are arranged on both the first connecting segment 11 and the third connecting segment 13, there is a plurality of third opening windows 143, and each third opening window 143 extends along the length direction of the fin 10 (the length direction of the fin 10 being the same as the length direction of the second connecting segment 12); and the plurality of third opening windows 143 are arranged at intervals along the width direction of the fin 10 (the width direction of the fin 10 being the same as the width direction of the second connecting segment 12), so as to improve the heat exchange effect. The first connecting segment 11 and the third connecting segment 13 is of the same structure.

Some other embodiments of the present disclosure provide a heat exchanger. The heat exchanger in this embodiment includes the fins 10 provided in the embodiments above. The heat exchanger further includes heat exchange flat tubes 40, an inlet header 20 and an outlet header 30. The inlet header 20 and the outlet header 30 are respectively provided at two sides of the heat exchange flat tube 40. There is a plurality of heat exchange flat tubes 40, and fins 10 are provided between every two adjacent heat exchange flat tubes 40.

In this embodiment, the heat exchanger further includes the inlet header 20 and the outlet header 30; the inlet header 20 is disposed at one end of each of the fins 10, and the radius of the inlet header 20 is R₁; and the outlet header 30 is provided at the other end of each of the fins 10, and the radius of the outlet header 30 is R₂; where Fw₂<R₁<R₂. Such a structural arrangement can reduce the resistance of a medium inside the heat exchanger, in particular the resistance of the inlet and outlet headers.

The distance between plugging ends of two adjacent heat exchange flat tubes 40 is Tp, and Fh₂<Tp can be made, facilitating bending of the second connecting segment 12.

From the description above, it can be determined that the embodiments above of the present disclosure achieve the following technical effects: the windward area of the product is increased, the bent region also has the fin to enhance heat exchange, the overall heat exchange capacity is enhanced, and bending of a segment to be bent is facilitated.

It should be noted that the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit exemplary embodiments according to the present disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise, and further it should be understood that the terms “include” and/or “including” when used in the present description, specify the presence of features, steps, operations, devices, assemblies and/or combinations thereof.

Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure. Moreover, it should be understood that for the convenience of description, the dimensions of the parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods and devices known to a person of ordinary skill in the art may not be discussed in detail, but the techniques, methods and devices shall be considered as a part of the description to be granted, where appropriate. In all examples shown and discussed herein, any specific values shall be construed as exemplary only and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numerals and letters represent similar items in the following accompanying drawings, and thus once a certain item is defined in one accompanying drawing, it does not need to be further discussed in subsequent accompanying drawings.

In the illustration of some embodiments of the present disclosure, it should be understood that orientation or position relationships indicated by orientation words such as “front, rear, upper, lower, left, right”, “lateral, vertical, perpendicular, horizontal”, and “top, bottom”, etc. are generally based on the orientation or position relationships shown in the accompanying drawings, and are only used to facilitate illustration of some embodiments of the present disclosure and simplify the illustration. In cases where no opposite illustration is made, these orientation words do not indicate or imply that the apparatus or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be construed as limitations to the scope of protection of the present disclosure. Orientation words “inside and outside” refer to inside and outside relative to the outline of each component itself.

In order to facilitate illustration, a spatial relative term may be used here, such as “over . . . ”, “above . . . ”, “on an upper surface of . . . ” and “on”, etc. to describe a spatial location relation between a device or a feature shown in the drawing and other devices or other features. It is to be understood that the spatial relative term aims at including different orientations of the device during use or operation except the orientation described in the drawing. For example, if the devices in the figures are inverted, devices described as “above other devices or configurations” or “on other devices or configurations” would then be positioned “below other devices or configurations” or “under other devices or configurations”. Therefore, an exemplary term “above . . . ” may include two orientations: “above . . . ” and “under . . . ”. The device may be positioned in other different ways as well (rotating 90 degrees or at other orientations), and the spatially relative illustrations used herein are to be construed accordingly.

In addition, it should be noted that terms such as “first” and “second”, etc. are used to define parts, only for the convenience of distinguishing corresponding parts, and if no other statement is made, the terms do not have special meanings, and therefore cannot be construed as limiting the scope of protection of the present disclosure.

The content above merely relates to preferred embodiments of the present disclosure, and is not intended to limit the present disclosure. For a person skilled in the art, the present disclosure may have various modifications and changes. Any modifications, equivalent replacements, improvements and the like made within the spirit and principle of the present disclosure shall all fall within the scope of protection of the present disclosure.

Claims

1. A fin, comprising: a first connecting segment, a second connecting segment and a third connecting segment, wherein the second connecting segment is disposed between the first connecting segment and the third connecting segment, the second connecting segment is configured to being bent, and the second connecting segment has a first connecting end and a second connecting end opposite each other, and the first connecting end is disposed on a side of the second connecting end away from the third connecting segment; an extension direction from the first connecting end to the second connecting end is a length direction of the second connecting segment; and along the length direction of the second connecting segment, the second connecting segment can be bent and deformed, so that the second connecting segment of a straight-strip structure forms an arcuate-strip structure after being bent.

2. The fin as claimed in claim 1, wherein the second connecting segment has a corrugated structure; the second connecting segment comprises a plurality of connecting bodies, a plurality of wave crests and a plurality of wave troughs, and two ends of each of the plurality of connecting bodies are respectively connected with a wave crest and a wave trough; a direction from a valley position of the second connecting segment to a peak position of the second connecting segment is a height direction of the second connecting segment, and both the height direction of the second connecting segment and the length direction of the second connecting segment are perpendicular to a width direction of the second connecting segment; and one of the plurality of connecting bodies is provided with a first opening window, the first opening window is a strip-shaped opening, and the first opening window extends in the width direction of the second connecting segment.

3. The fin as claimed in claim 2, wherein there is a plurality of first opening windows, and the plurality of first opening windows are disposed on one of the plurality of connecting bodies at intervals.

4. The fin as claimed in claim 3, wherein the plurality of first opening windows are disposed at intervals along the length direction of the second connecting segment; orthe plurality of first opening windows are disposed at intervals along the width direction of the second connecting segment; orthe plurality of first opening windows form a plurality of first opening window groups, each of the plurality of first opening window groups comprises a plurality of first opening windows disposed at intervals along the length direction of the second connecting segment, and the plurality of first opening window groups are disposed at intervals along the width direction of the second connecting segment.

5. The fin as claimed in claim 3, wherein one of the plurality of connecting bodies is further provided with a second opening window, the second opening window and the first opening window are disposed at intervals, the second opening window ia a strip-shaped opening, and the second opening window extends in the length direction of the second connecting segment.

6. The fin as claimed in claim 5, wherein there is a plurality of second opening windows, and the plurality of second opening windows are disposed at intervals.

7. The fin as claimed in claim 6, wherein the plurality of second opening windows are disposed at intervals along the width direction of the second connecting segment.

8. The fin as claimed in claim 6, wherein the second opening windows are disposed at ends of the first opening windows.

9. The fin as claimed in claim 6, wherein there is a plurality of first opening windows, the plurality of first opening windows form a plurality of first opening window groups, each of the plurality of first opening window groups comprises a plurality of first opening windows disposed at intervals along the length direction of the second connecting segment, and the plurality of first opening window groups are disposed at intervals along the width direction of the second connecting segment; at least one second opening window is disposed between two adjacent first opening window groups of the plurality of first opening window groups; orthere is a plurality of second opening windows, at least one second opening window of the plurality of second opening windows is disposed at one end of the plurality of first opening window groups, and at least one second opening window of the plurality of second opening windows is disposed at an other end of the plurality of first opening window groups.

10. The fin as claimed in claim 1, wherein the first connecting segment, the second connecting segment and the third connecting segment are all of corrugated structures, the first connecting segment has a first wave pitch Fp1, the second connecting segment has a second wave pitch Fp2, and the third connecting segment has a third wave pitch Fp3; wherein Fp2>Fp1 and Fp2>Fp3.

11. The fin as claimed in claim 10, wherein the length direction of the second connecting segment and the height direction of the second connecting segment are both perpendicular to a width direction of the second connecting segment, and along the width direction of the second connecting segment, a width of the second connecting segment is Fw2, a width of the first connecting segment is Fw1, and a width of the third connecting segment is Fw3; wherein Fw1=Fw2=Fw3.

12. The fin as claimed in claim 10, wherein a length of the second connecting segment is BL, and a width of the second connecting segment is Fw2; wherein 1.5Fw2≤BL≤5.5Fw2.

13. The fin as claimed in claim 10, wherein a width of the second connecting segment is Fw2, and a bending radius of the second connecting segment is Rbending; wherein 2Fw2≤Rbending≤7Fw2.

14. The fin as claimed in claim 1, wherein the first connecting segment and the second connecting segment are disposed at an interval; orthe third connecting segment and the second connecting segment are disposed at an interval; orthe first connecting segment and the second connecting segment are disposed at an interval, and the third connecting segment and the second connecting segment are disposed at an interval.

15. The fin as claimed in claim 1, wherein a height of the first connecting segment is Fh1, a height of the second connecting segment is Fh2, and a height of the third connecting segment is Fh3; wherein Fh2≤Min(Fh1, Fh3).

16. The fin as claimed in claim 15, wherein Fh1=Fh3.

17. The fin as claimed in claim 10, wherein Fp1=Fp3.

18. A heat exchanger, the heat exchanger comprising the fin as claimed in claim 1.

19. The heat exchanger as claimed in claim 18, wherein the heat exchanger further comprises: an inlet header, disposed at one end of the fin, a radius of the inlet header being R1; andan outlet header, disposed at an other end of the fin, a radius of the outlet header being R2;wherein Fw2<R1<R2.

20. The heat exchanger as claimed in claim 18, wherein the second connecting segment has a corrugated structure; the second connecting segment comprises a plurality of connecting bodies, a plurality of wave crests and a plurality of wave troughs, and two ends of each of the plurality of connecting bodies are respectively connected with a wave crest and a wave trough; a direction from a valley position of the second connecting segment to a peak position of the second connecting segment is a height direction of the second connecting segment, and both the height direction of the second connecting segment and the length direction of the second connecting segment are perpendicular to a width direction of the second connecting segment; and one of the plurality of connecting bodies is provided with a first opening window, the first opening window is a strip-shaped opening, and the first opening window extends in the width direction of the second connecting segment.