Fin and heat exchanger having the same

Abstract

The application provides a fin and a heat exchanger with the same, the fin comprising a first connecting section, a second connecting section and a third connecting section, the second connecting section being arranged between the first connecting section and the third connecting section and being used for bending; along the length direction of the second connecting section, the second connecting section is in a straight strip structure before bending and is in an arc strip structure after bending; the second connecting section is in a corrugated structure, the height direction of the second connecting section is along the direction from the valley position of the second connecting section to the peak position of the second connecting section, and the height direction and the length direction of the second connecting section are both perpendicular to the width direction of the second connecting section; wherein, the second connecting section is provided with a first opening window, the first opening window is in a strip shape, and the first opening window extends along the width direction of the second connecting section. Through the technical scheme provided by the application, the technical problem that the fin is inconvenient to bend in the prior art can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fin bending, in particular to a fin and a heat exchanger with the same. BACKGROUND

[0002] At present, some heat exchangers in the prior art have a bending section, and the flat tube of the heat exchanger is twisted in a bending reserved area to realize the bending of the flat tube. In order to avoid the inconvenience of bending the fin and the instability of the fin in the bending, generally no fin is arranged in the bending reserved area of the flat tube, so that a fin-free area is formed in the bending section of the heat exchanger.

[0003] However, a large gap will appear in the fin-free area, causing air leakage and affecting the heat exchange performance. SUMMARY

[0004] The main purpose of the present application is to provide a fin and a heat exchanger with the same, so as to solve the technical problem of inconvenience in bending the fin in the prior art.

[0005] In order to achieve the above purpose, according to one aspect of the present application, a fin is provided, comprising: a first connecting section, a second connecting section and a third connecting section, the second connecting section being arranged between the first connecting section and the third connecting section, the second connecting section being used for bending, the second connecting section having a first connecting end and a second connecting end arranged oppositely, the first connecting end being arranged on the side of the second connecting end away from the third connecting section; the extension direction from the first connecting end to the second connecting end being the length direction of the second connecting section; along the length direction of the second connecting section, the second connecting section is a straight strip structure before bending and an arc-shaped strip structure after bending; the second connecting section is a corrugated structure, the direction from the valley position of the second connecting section to the peak position of the second connecting section being the height direction of the second connecting section, the height direction of the second connecting section and the length direction of the second connecting section both being perpendicular to the width direction of the second connecting section; wherein, the second connecting section is provided with a first window, the first window being a strip-shaped opening, the first window extending along the width direction of the second connecting section.

[0006] Further, the first window is a plurality of first windows, and the plurality of first windows are arranged on the second connecting section in a spaced manner.

[0007] Further, the plurality of first windows are arranged in a spaced manner along the length direction of the second connecting section; or the plurality of first windows are arranged in a spaced manner along the width direction of the second connecting section; or the plurality of first windows form a plurality of first window groups, each of the plurality of first window groups comprises a plurality of first windows arranged in a spaced manner along the length direction of the second connecting section, and the plurality of first window groups are arranged in a spaced manner along the width direction of the second connecting section.

[0008] Further, the second connecting section is further provided with a second window, the second window is arranged at intervals with the first window, and the second window is a strip-shaped opening extending along the length direction of the second connecting section.

[0009] Further, the second window is a plurality of second windows arranged at intervals.

[0010] Further, the plurality of second windows are arranged at intervals along the width direction of the second connecting section.

[0011] Further, the second window is arranged at the end of the first window.

[0012] Further, the first window is a plurality of first windows forming a plurality of first window groups, each of the plurality of first window groups comprises a plurality of first windows arranged at intervals along the length direction of the second connecting section, and the plurality of first window groups are arranged at intervals along the width direction of the second connecting section; at least one second window is arranged between two adjacent first window groups of the plurality of first window groups; or, the second window is a plurality of second windows, at least one second window of the plurality of second windows is arranged at one end of the plurality of first window groups, and at least one second window of the plurality of second windows is arranged at the other end of the plurality of first window groups.

[0013] Further, the first connecting section and the third connecting section are both corrugated structures, the first connecting section has a first wave pitch Fp1, the second connecting section has a second wave pitch Fp2, and the third connecting section has a third wave pitch Fp3; wherein Fp2>Fp1 and Fp2>Fp3.

[0014] According to another aspect of the present application, a heat exchanger is provided, which comprises the fin provided above.

[0015] According to the technical scheme of the present application, since the first window on the second connecting section extends along the width direction of the second connecting section, the fin has a gap extending along the width direction of the second connecting section, and when the second connecting section is bent in the length direction, the first window can be adaptively stretched and shrunk, that is, the first window can be stretched and shrunk along with the bending deformation of the second connecting section, so that the second connecting section can be bent and formed into an arc-shaped strip structure. That is, the arrangement of the first window effectively increases the bending deformation amount of the fin, avoids the serious twisting deformation of the fin during the bending deformation, and effectively improves the heat exchange effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings constituting a part of the specification of the present application are used to provide a further understanding of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 A front view of the heat exchanger with fins before bending is shown according to an embodiment of the present application;

[0018] Figure 2 A top view of the heat exchanger with fins before bending is shown according to an embodiment of the present application;

[0019] Figure 3 A structural schematic view of the second connecting section provided with the window structure is shown according to an embodiment of the present application;

[0020] Figure 4 A structural schematic view of the first connecting section provided with the window structure is shown according to an embodiment of the present application;

[0021] Figure 5 A structural schematic view of the second connecting section provided with the window structure is shown according to another embodiment of the present application;

[0022] Figure 6 A structural schematic view of the second connecting section provided with the window structure is shown according to still another embodiment of the present application;

[0023] Figure 7 A schematic view of the heat exchanger with fins in one direction after bending into a double-row structure is shown according to an embodiment of the present application;

[0024] Figure 8 A schematic view of the heat exchanger with fins in one direction after bending into a double-row structure is shown according to an embodiment of the present application; Figure 7 A partial enlarged schematic view of the heat exchanger with fins in one direction after bending into a double-row structure is shown according to an embodiment of the present application;

[0025] Figure 9 A structural schematic view of the heat exchanger with fins after bending into a double-row structure is shown according to an embodiment of the present application;

[0026] Figure 10 A front view of the heat exchanger with fins after bending into a double-row structure is shown according to an embodiment of the present application;

[0027] Figure 11 A structural schematic view of the heat exchanger with fins after bending into an A-shaped structure is shown according to an embodiment of the present application;

[0028] Figure 12 A front view of the heat exchanger with fins after bending into an A-shaped structure is shown according to an embodiment of the present application;

[0029] Figure 13 A left view of the heat exchanger with fins after bending into an A-shaped structure is shown according to an embodiment of the present application.

[0030] In the above drawings, the following reference signs are used:

[0031] 10. Fins; 11. First connecting section; 12. Second connecting section; 13. Third connecting section; 141. First opening window; 142. Second opening window; 143. Third opening window; 20. Inlet manifold; 30. Outlet manifold; 40. Heat exchange flat tube. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] like Figures 1 to 6 As shown, Embodiment 1 of the present invention provides a fin 10, which includes a first connecting section 11, a second connecting section 12, and a third connecting section 13. The second connecting section 12 is disposed between the first connecting section 11 and the third connecting section 13. The second connecting section 12 is used for bending. The second connecting section 12 has a first connecting end and a second connecting end disposed opposite to each other. The first connecting end is disposed on the side of the second connecting end away from the third connecting section 13. The extension direction from the first connecting end to the second connecting end is the length direction of the second connecting section 12. Along the length direction of the second connecting section 12, the second connecting section 12 has a straight strip structure before bending and an arc-shaped strip structure after bending. The second connecting section 12 has a corrugated structure. The direction from the trough position to the crest position of the second connecting section 12 is the height direction of the second connecting section 12. Both the height direction and the length direction of the second connecting section 12 are perpendicular to the width direction of the second connecting section 12. The second connecting section 12 is provided with a first opening 141, which is a strip-shaped opening extending along the width direction of the second connecting section 12. Specifically, TW is an abbreviation for Tube Width, representing the width of the fin, and the TW direction in the attached figure represents the width direction.

[0034] The fin 10 provided in the embodiment has the first window 141 extending along the width direction of the second connecting section 12, so that when the second connecting section 12 is bent in the length direction, the first window 141 will be deformed along with the deformation of the second connecting section 12 in the length direction, that is, the first window 141 will be deformed by stretching and shrinking adaptively during the bending of the second connecting section 12 in the length direction, that is, the first window 141 can stretch and shrink along with the bending deformation of the second connecting section 12, so as to facilitate the bending of the second connecting section 12 and form the arc-shaped strip structure. Therefore, by increasing the window structure on the fin 10, the bending deformation amount of the fin is effectively increased, the bending of the second connecting section 12 in the length direction is facilitated, and the structure of the fin is prevented from being severely twisted and deformed during the bending deformation. Therefore, the first window 141 will be deformed adaptively, so as to facilitate the bending of the second connecting section 12 and form the arc-shaped strip structure, and the first window 141 can maintain the window shape to a large extent during the bending, so as to avoid the waste of the bending force; meanwhile, the first window 141 can also facilitate the effective improvement of the heat exchange effect. In addition, by providing the to-be-bent section structure, the area without the fin 10 can be avoided, the air leakage is reduced, and the heat exchange performance is effectively ensured. The fin 10 in the embodiment can increase the windward area of the product, the folding area also has the fin 10 to enhance the heat exchange, the overall heat exchange capacity is strengthened, the corrosion resistance of the product is improved, the service life of the product is prolonged, the reliability is improved, the overall appearance of the product is ensured, the folding processing is convenient, and the efficiency is high.

[0035] It should be noted that when the heat exchanger is bent, the bending roller contacts the heat exchange flat tube 40, the heat exchange flat tube 40 is bent and curved into a U-shaped structure, and the heat exchange flat tube 40 has a certain twisting deformation at the U-shaped portion, so as to facilitate the heat exchange flat tube 40 of the plate-shaped structure to form effective shielding. At the same time, the heat exchange flat tube 40 drives the fin 10 connected with the heat exchange flat tube 40 to be bent, specifically, the second connecting section 12 is bent, and the second connecting section 12 is bent into a U-shaped structure, and the second connecting section 12 has a certain twisting deformation, so as to facilitate the second connecting section 12 to form effective shielding. As shown in Figures 7 to 10 As shown in Figures 11 to 13 As shown in

[0036] The first connecting section 11 and the third connecting section 13 in the embodiment can be both connected with the second connecting section 12. Alternatively, the first connecting section 11 and the third connecting section 13 are both spaced apart from the second connecting section 12, so that the second connecting section 12 has a certain bending deformation space when bending, facilitating the bending deformation of the second connecting section 12.

[0037] The first window 141 in the embodiment can be multiple, and the multiple first windows 141 are spaced apart on the second connecting section 12. By adopting such a structure, the multiple first windows 141 can facilitate further improving the heat exchange effect and facilitate the bending forming of the second connecting section 12, avoiding deformation of the first window 141 when bending and waste of bending force, facilitating smooth bending.

[0038] In one embodiment, the multiple first windows 141 can be spaced apart along the length direction of the second connecting section 12, which facilitates optimizing the arrangement of the first windows 141 and increasing the number of the first windows 141 to facilitate effective heat exchange. At the same time, the first windows 141 will not be deformed due to the bending of the second connecting section 12.

[0039] In another embodiment, the multiple first windows 141 can be spaced apart along the width direction of the second connecting section 12. By adopting such a structure, the multiple first windows 141 can be arranged side by side along the width direction of the second connecting section 12, avoiding the case that the first windows 141 extend too long along the width direction of the second connecting section 12, resulting in unstable structure, and improving the structural stability of the second connecting section 12.

[0040] In yet another embodiment, the multiple first windows 141 can form multiple first window groups, each of the multiple first window groups includes multiple first windows 141 spaced apart along the length direction of the second connecting section 12, and the multiple first window groups are spaced apart along the width direction of the second connecting section 12. By adopting such a structure of multiple first window groups, the arrangement range and position of the first windows 141 can be increased, and the first windows 141 will not be deformed too much when bending, thereby facilitating effective bending. In addition, such a structure layout can also effectively ensure the structural strength of the second connecting section 12.

[0041] In the embodiment, the second connecting section 12 is also provided with a second window 142, the second window 142 is spaced apart from the first window 141, the second window 142 is a strip-shaped opening, and the second window 142 extends along the length direction of the second connecting section 12. By adopting such a structure, the second window 142 can facilitate ensuring the structural strength of the second connecting section 12 in the length direction, increasing the partial resistance of bending, and avoiding the case that the bending transition is out of control.

[0042] Specifically, the second window 142 in the embodiment is multiple, and the multiple second windows 142 are arranged at intervals to better avoid the bending transition deformation of the second connecting section 12.

[0043] In the embodiment, the multiple second windows 142 are arranged at intervals along the width direction of the second connecting section 12. With such a structural arrangement, the structural strength of the second connecting section 12 in the length direction can be better ensured, and the failure of the fin 10 due to bending transition deformation can be avoided.

[0044] Specifically, the second window 142 is arranged at the end of the first window 141. With such a structural arrangement, the structural strength can be effectively improved through the second window 142 to reduce the out-of-control bending deformation, and the structural layout of the window structure is optimized to facilitate effective heat exchange.

[0045] The first window 141 in the embodiment can be multiple, and the multiple first windows 141 form multiple first window groups. Each of the multiple first window groups includes multiple first windows 141 arranged at intervals along the length direction of the second connecting section 12, and the multiple first window groups are arranged at intervals along the width direction of the second connecting section 12. At least one second window 142 can be arranged between adjacent two of the multiple first window groups to effectively ensure the structural strength and avoid the bending deformation failure. Alternatively, when the second window 142 is multiple, at least one of the multiple second windows 142 is arranged at one end of the multiple first window groups, and at least one of the multiple second windows 142 is arranged at the other end of the multiple first window groups to effectively ensure the structural strength at both ends and avoid the bending out-of-control.

[0046] In the embodiment, the first connecting section 11 and the third connecting section 13 are both corrugated structures, the first connecting section 11 has a first wave distance Fp1, the second connecting section 12 has a second wave distance Fp2, and the third connecting section 13 has a third wave distance Fp3; wherein Fp2>Fp1, and Fp2>Fp3. With such a structural arrangement, the bending deformation of the fin 10 can be facilitated. In this way, the fin 10 product can be bent in the sparse fin area, and the bending feasibility is high, and a certain angle can be folded or folded.

[0047] Specifically, in the present embodiment, a third window 143 is arranged on each of the first connecting section 11 and the third connecting section 13, the third window 143 is a plurality of third windows 143, each third window 143 extends along the length direction of the fin 10 (the length direction of the fin 10 is the same as the length direction of the second connecting section 12), and the plurality of third windows 143 are arranged at intervals along the width direction of the fin 10 (the width direction of the fin 10 is the same as the width direction of the second connecting section 12), so as to improve the heat exchange effect. Specifically, the first connecting section 11 and the third connecting section 13 can have the same structure.

[0048] Embodiment two of the present application provides a heat exchanger, the heat exchanger in the present embodiment comprises the fin 10 provided in the above embodiment one. The heat exchanger further comprises a heat exchange flat tube 40, an inlet header 20 and an outlet header 30, and the inlet header 20 and the outlet header 30 are arranged on both sides of the heat exchange flat tube 40. The heat exchange flat tube 40 is a plurality of heat exchange flat tubes 40, and the fin 10 is arranged between adjacent two heat exchange flat tubes 40.

[0049] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects: the windward area of the product is improved, the bending area also has the fin to enhance the heat exchange, the overall heat exchange capacity is strengthened, and the to-be-bent section is convenient for bending.

[0050] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0051] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the various embodiments are not intended to limit the scope of the present application, unless otherwise specifically stated. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the techniques, methods and devices should be considered as part of the authorized specification. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of the example embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0052] In the description of the application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the application; The orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0053] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0054] In addition, it should be noted that the use of "first", "second" and the like words to define parts, only for the convenience of corresponding parts, such as no further declaration, the above words have no special meaning, therefore, it cannot be understood as a limitation on the scope of protection of the application.

[0055] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fin characterized in that, The utility model relates to a kind of connecting piece, including: First connecting section (11), second connecting section (12) and third connecting section (13), the second connecting section (12) is arranged between the first connecting section (11) and the third connecting section (13), the second connecting section (12) is used to bend, the second connecting section (12) has oppositely arranged first connecting end and second connecting end, the first connecting end is arranged at the side of the second connecting end away from the third connecting section (13);The extension direction from the first connecting end to the second connecting end is the length direction of the second connecting section (12);Along the length direction of the second connecting section (12), the second connecting section (12) is straight strip structure before bending, and the second connecting section (12) is arc strip structure after bending; The second connecting section (12) is corrugated structure, the direction from the trough position of the second connecting section (12) to the peak position of the second connecting section (12) is the height direction of the second connecting section (12), and the height direction of the second connecting section (12) and the length direction of the second connecting section (12) are both perpendicular to the width direction of the second connecting section (12); Wherein, the first window (141) is arranged on the second connecting section (12), the first window (141) is strip-shaped mouth, and the first window (141) extends along the width direction of the second connecting section (12); The second window (142) is also arranged on the second connecting section (12), the second window (142) is arranged at intervals with the first window (141), the second window (142) is strip-shaped mouth, and the second window (142) extends along the length direction of the second connecting section (12); A plurality of first windows (141) are arranged at intervals along the length direction of the second connecting section (12);Or, A plurality of first windows (141) are arranged at intervals along the width direction of the second connecting section (12);Or, A plurality of first windows (141) form a plurality of first window groups, each first window group in the plurality of first window groups includes a plurality of first windows (141) arranged at intervals along the length direction of the second connecting section (12), and the plurality of first window groups are arranged at intervals along the width direction of the second connecting section (12).

2. The fin of claim 1, wherein The first window (141) is a plurality of, and a plurality of first windows (141) are arranged at intervals on the second connecting section (12).

3. The fin of claim 1, wherein The second window (142) is a plurality of, and a plurality of second windows (142) are arranged at intervals.

4. The fin of claim 3, wherein A plurality of second windows (142) are arranged at intervals along the width direction of the second connecting section (12).

5. The fin of claim 3, wherein The second window (142) is arranged at the end of the first window (141).

6. The fin of claim 3, wherein The first window openings (141) are multiple, and the multiple first window openings (141) form multiple first window groups, each of the multiple first window groups comprises multiple first window openings (141) arranged at intervals along the length direction of the second connecting section (12), and the multiple first window groups are arranged at intervals along the width direction of the second connecting section (12); At least one second window opening (142) is arranged between any two adjacent first window groups of the multiple first window groups; or The second window openings (142) are multiple, and at least one second window opening (142) of the multiple second window openings (142) is arranged at one end of the multiple first window groups, and at least one second window opening (142) of the multiple second window openings (142) is arranged at the other end of the multiple first window groups.

7. The fin of claim 1 wherein, The first connecting section (11) and the third connecting section (13) are both corrugated structures, the first connecting section (11) has a first wave pitch Fp1, the second connecting section (12) has a second wave pitch Fp2, and the third connecting section (13) has a third wave pitch Fp3; Wherein, Fp2>Fp1, and Fp2>Fp3.

8. A heat exchanger, characterized by The heat exchanger comprises the fin as claimed in any one of claims 1 to 7.

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