WO2023237110A1 - Fin and heat exchanger provided with same - Google Patents

Abstract

The present application provides a fin and a heat exchanger provided with same. The fin comprises a first connecting section, a second connecting section, and a third connecting section, wherein the second connecting section is disposed between the first connecting section and the third connecting section, the second connecting section is used for being bent, the second connecting section is provided with a first connecting end and a second connecting end which are oppositely provided, and the first connecting end is disposed 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 is the length direction of the second connecting section; and in the length direction of the second connecting section, the second connecting section can be bent and deformed, so that the second connecting section of a straight strip structure is of an arc-shaped strip structure after being bent. By means of the technical solution provided by the present application, the technical problem that in the prior art, fins are inconvenient to bend can be solved.

Description

Fins and heat exchangers having the same

This application requests the priority of the patent application submitted to the State Intellectual Property Office of China on June 10, 2022, with the application number 202210655643.4 and the application name "Fins and heat exchangers having the same". The priority of the patent application submitted to the China State Intellectual Property Office on June 10, 2022, with the application number 202221460859.7 and the application name "Fins and heat exchangers having the same", was submitted to the China State Intellectual Property Office on June 10, 2022. The priority of the patent application with application number 202210654620.1 and the application name "Fins and heat exchangers having the same", and the application number 202221471334.3 submitted to the China State Intellectual Property Office on June 10, 2022 and the application name is Priority of the patent application for "fins and heat exchangers having the same".

Technical field

The present application relates to the technical field of fin bending, and specifically to a fin and a heat exchanger having the same.

Background technique

Currently, some heat exchangers in the prior art have bending sections, and the flat tubes of the heat exchanger are twisted in the bending reserved areas to achieve bending of the flat tubes. In order to avoid the inconvenience of bending the fins and the unstable bending of the fins during bending, fins are generally not provided in the bending reserved area of the flat tube, thus forming a finless area.

However, large gaps will appear in the fin-free area, causing air leakage and affecting heat transfer performance.

Contents of the invention

The main purpose of this application is to provide a fin and a heat exchanger having the same, so as to solve the technical problem of inconvenient bending of the fins in the prior art.

In order to achieve the above object, according to one aspect of the present application, a fin is provided, including:

The first connecting section, the second connecting section and the third connecting section, the second connecting section is arranged between the first connecting section and the third connecting section, the second connecting section is used for bending, the second connecting section has oppositely arranged The first connection end and the second connection end, the first connection end is arranged on the side of the second connection end away from the third connection section; the extending direction from the first connection end to the second connection end is the length direction of the second connection section; Along the length direction of the second connecting section, the second connecting section can be bent and deformed, so that the second connecting section of the straight bar structure forms an arc-shaped bar structure after bending.

Further, the second connecting section has a corrugated structure, and the direction from the trough position of the second connecting section to the crest position of the second connecting section is the height direction of the second connecting section, and the height direction of the second connecting section and the second connecting section The length direction is 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 a strip opening, and the first opening window extends along the width direction of the second connecting section.

Further, there are multiple first opening windows, and the plurality of first opening windows are arranged at intervals on the second connecting section.

Further, a plurality of first opening windows are arranged at intervals along the length direction of the second connecting section; or,

A plurality of first opening windows are arranged at intervals along the width direction of the second connecting section; or,

The plurality of first windows form a plurality of first window groups, and each first window group in the plurality of first window groups includes a plurality of first windows spaced apart along the length direction of the second connecting section, A plurality of first window groups are arranged at intervals along the width direction of the second connecting section.

Further, a second opening window is also provided on the second connecting section. The second opening window is spaced apart from the first opening window. The second opening window is a strip-shaped opening and extends along the length direction of the second connecting section. .

Further, there are multiple second opening windows, and the plurality of second opening windows are arranged at intervals.

Further, a plurality of second opening windows are spaced apart along the width direction of the second connecting section.

Further, the second opening window is provided at the end of the first opening window.

Further, there are a plurality of first opening windows, and the plurality of first opening windows form a plurality of first opening window groups, and each of the plurality of first opening window groups includes a plurality of first opening windows along the second connecting section. The first opening windows are arranged at intervals in the length direction, and a plurality of first window groups are arranged at intervals along the width direction of the second connecting section;

At least one second window is provided between two adjacent first window groups of the plurality of first window groups; or,

There are a plurality of second opening windows, at least one second opening window among the plurality of second opening windows is arranged at one end of the plurality of first opening windows, and at least one second opening window among the plurality of second opening windows is arranged at The other end of the plurality of first fenestration groups.

Further, the first connecting section, the second connecting section and the third connecting section are all corrugated structures. The first connecting section has a first wave pitch Fp ₁ , the second connecting section has a second wave pitch Fp ₂ , and the third connecting section has a corrugated structure. With the third wave distance Fp ₃ ;

Among them, Fp ₂ > Fp ₁ and Fp ₂ > Fp ₃ .

Further, the length direction of the second connecting section and the height direction of the second connecting section are both perpendicular to the width direction of the second connecting section. The width of the second connecting section along the width direction of the second connecting section is Fw 2 , and the width of the first connecting section is Fw ₂ . The width of the segment is Fw ₁ , and the width of the third connecting segment is Fw ₃ ;

Among them, Fw ₁ =Fw ₂ =Fw ₃ .

Further, the length of the second connecting section is BL, and the width of the second connecting section is Fw ₂ ;

Among them, 1.5Fw ₂ ≤ BL ≤ 5.5Fw ₂ .

Further, the width of the second connecting section is Fw ₂ and the bending radius of the second connecting section is R bend;

Among them, 2Fw ₂ ≤ R _bend ≤ 7Fw ₂ .

Further, the first connecting section and the second connecting section are arranged at intervals; and/or,

The third connecting section is spaced apart from the second connecting section.

Further, the height of the first connecting section is Fh ₁ , the height of the second connecting section is Fh ₂ , and the height of the third connecting section is Fh ₃ ;

Among them, Fh ₂ ≤Min.

Furthermore, Fh ₁ =Fh ₃ .

Furthermore, Fp ₁ =Fp ₃ .

According to another aspect of the present invention, a heat exchanger is provided. The heat exchanger includes the fins provided above.

Furthermore, the heat exchanger also includes:

The inlet header is arranged at one end of the fin, and the radius of the inlet header is R ₁ ;

The outlet header is set at the other end of the fin, and the radius of the outlet header is R ₂ ;

Among them, Fw ₂ <R ₁ <R ₂ .

Applying the technical solution of the present application, since the first opening on the second connecting section extends along the width direction of the second connecting section, the fins have gaps extending along the width direction of the second connecting section. When the second connecting section When being bent in the length direction, the first window can stretch and shrink adaptively, that is, the first window can stretch and shrink with the bending deformation of the second connecting section, which facilitates the second connecting section. Bend and form a curved bar structure. In other words, the setting of the first window effectively increases the amount of bending deformation of the fins and avoids serious distortion of the structure during the bending deformation process of the fins; at the same time, the first window can also effectively improve the heat exchange effect.

Description of the drawings

The description and drawings that constitute a part of this application are used to provide a further understanding of this application. The illustrative embodiments and their descriptions of this application are used to explain this application and do not constitute an improper limitation of this application. In the attached picture:

Figure 1 shows a front view of a heat exchanger with fins before bending according to an embodiment of the present application;

Figure 2 shows a top view of a heat exchanger with fins before bending according to an embodiment of the present application;

Figure 3 shows a schematic structural diagram of a second connection section provided with a window structure according to an embodiment of the present application;

Figure 4 shows a schematic structural diagram of a first connection section with a window structure provided according to an embodiment of the present application;

Figure 5 shows a schematic structural diagram of a second connection section provided with a window structure according to another embodiment of the present application;

Figure 6 shows a schematic structural diagram of a second connection section provided with a window structure according to yet another embodiment of the present application;

7 shows a schematic diagram of a heat exchanger with fins in one direction after being bent into a double-row structure according to an embodiment of the present application;

Figure 8 shows a partial enlarged schematic diagram of Figure 7;

Figure 9 shows a schematic structural diagram of a heat exchanger with fins after being bent into a double-row structure according to an embodiment of the present application;

Figure 10 shows a front view of a heat exchanger with fins after being bent into a double-row structure according to an embodiment of the present application;

Figure 11 shows a schematic structural diagram of a heat exchanger with fins after being bent into an A-shaped structure according to an embodiment of the present application;

Figure 12 shows a front view of a heat exchanger with fins after being bent into an A-shaped structure according to an embodiment of the present application;

Figure 13 shows a left view of a heat exchanger with fins after being bent into an A-shaped structure according to an embodiment of the present application.

Among them, the above-mentioned drawings include the following reference signs:
10. Fin; 11. First connecting section; 12. Second connecting section; 13. Third connecting section; 141. First opening window; 142.
Second window; 143, third window; 20, inlet header; 30, outlet header; 40, heat exchange flat tube.

Detailed ways

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

As shown in Figures 1 to 6, Embodiment 1 of the present application provides a fin 10. The fin 10 includes a first connecting section 11, a second connecting section 12, and a third connecting section 13. The second connecting section 12 is provided 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 arranged oppositely. The first connecting end It is provided on the side of the second connecting end away from the third connecting section 13; the extending 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 can be bent and deformed, so that the second connecting section 1) of the straight bar structure forms an arc-shaped bar structure after bending, which can also be understood as: second The connecting section 12 has a straight bar structure before bending, and the second connecting section 12 has an arc bar structure after bending.

Adopting such a structure can facilitate the adaptive bending of the second connecting section 12 in the length direction to form an arc-shaped bar structure, thereby avoiding severe distortion and deformation of the second connecting section 12 .

The second connecting section 12 has a corrugated structure. The direction from the corrugated valley position of the second connecting section 12 to the corrugated peak position of the second connecting section 12 is the height direction of the second connecting section 12 . The height direction of the second connecting section 12 is the same as the second connecting section 12 . The length direction of the connecting section 12 is perpendicular to the width direction of the second connecting section 12 . Wherein, the second connecting section 12 is provided with a first opening window 141 , the first opening window 141 is a strip opening, and the first opening window 141 extends along the width direction of the second connecting section 12 . Specifically, TW is the abbreviation of the English word corresponding to the width of the fin, TW represents the width of the fin, and the TW direction in the drawing represents the width direction.

Using the fin 10 provided in this embodiment, since the first opening 141 on the second connecting section 12 extends along the width direction of the second connecting section 12 , the fin 10 has a structure extending along the width direction of the second connecting section 12 gap, when the second company When the connecting section 12 is bent in the length direction, since the extending direction of the first opening window 141 is perpendicular to the length direction of the second connecting section 12, the first opening window 141 will follow the deformation of the second connecting section 12 in the length direction. Deformation occurs, that is to say, when the second connecting section 12 is bent in the length direction, the first opening window 141 will adaptively stretch and shrink and deform, that is, the first opening window 141 can follow the second connecting section. The bending deformation of 12 is stretched and contracted to facilitate bending the second connecting section and forming an arc strip structure. It can be seen from this that by adding a window structure to the fin 10, the bending deformation amount of the fin is effectively increased, which facilitates bending of the second connecting section 12 in the length direction and avoids the bending deformation of the fin during the bending deformation process. The structure was severely distorted. Therefore, the first opening window 141 of the above structure will undergo adaptive deformation, which facilitates the bending of the second connecting section 12 and forms an arc-shaped bar structure, and also facilitates the first opening window 141 to be larger when the second connecting section 12 is bent. The window shape is maintained to a certain extent to avoid the waste of bending force; at the same time, the first window 141 can also effectively improve the heat exchange effect. In addition, by arranging the structure of the section to be bent, the finless 10 area can also be avoided, reducing air leakage and effectively ensuring the heat exchange performance. The fins 10 in this embodiment can increase the windward area of the product, and there are also fins 10 in the bending area to enhance heat exchange, thereby enhancing the overall heat exchange capability; the anti-corrosion capability of the product is enhanced, the product life is extended, and the reliability is improved. Ensure the overall beauty of the product. The bending process is convenient and efficient.

It should be noted that during bending, the bending roller contacts the heat exchange flat tube 40 of the heat exchanger, and the heat exchange flat tube 40 is bent into a U-shaped structure, and the heat exchange flat tube 40 has a U-shaped A certain degree of twisting and deformation is required so that the plate body of the flat heat exchange tube 40 with a plate-like structure can form an effective shield. At the same time, the heat exchange flat tube 40 drives the fins 10 connected to the heat exchange flat tube 40 to bend. Specifically, the second connecting section 12 is bent, and the second connecting section 12 is bent into a U shape, and the second connecting section 12 has A certain degree of twisting and deformation is required to enable the second connecting section 12 to form effective shielding. As shown in Figures 7 to 10, the heat exchanger is bent into a double-row structure. Alternatively, as shown in Figures 11 to 13, the heat exchanger is bent into an A-shaped structure.

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

There may be multiple first opening windows 141 in this embodiment, and the plurality of first opening windows 141 are arranged at intervals on the second connecting section 12 . Adopting such a structural arrangement, the heat exchange effect can be further improved through the plurality of first opening windows 141, and the bending and shaping of the second connecting section 12 can be facilitated, thereby preventing the first opening windows 141 from deforming during bending and avoiding the occurrence of bending force. waste, allowing for smooth bending.

In one embodiment, a plurality of first opening windows 141 can be arranged at intervals along the length direction of the second connecting section 12, which facilitates optimizing the arrangement of the first opening windows 141 and increasing the number of the first opening windows 141 so that for effective heat exchange. At the same time, the first window 141 will not be deformed due to the bending of the second connecting section 12 .

In another embodiment, multiple first opening windows 141 can be arranged at intervals along the width direction of the second connecting section 12. With such a structural arrangement, multiple first opening windows 141 can be arranged side by side along the width direction of the second connecting section 12. The opening of the window 141 prevents the first opening 141 from extending too long along the width direction of the second connecting section 12 and causing structural instability, thereby improving the structural stability of the second connecting section 12 .

In yet another embodiment, the plurality of first window openings 141 can be formed into a plurality of first window opening groups, and each of the plurality of first window opening groups includes a plurality of first opening windows along the second connecting section 12 The first opening window 141 is set at intervals in the length direction, and multiple The first window groups are spaced apart along the width direction of the second connecting section 12 . Adopting such a structure of multiple first window groups can easily increase the layout range and position of the first window 141, and will not cause the first window 141 to undergo large deformation during bending, thereby facilitating effective bending. fold. In addition, adopting such a structural layout can effectively ensure the structural strength of the second connecting section 12 .

In this embodiment, the second connecting section 12 is also provided with a second opening window 142. The second opening window 142 is spaced apart from the first opening window 141. The second opening window 142 is a strip-shaped opening. The second opening window 142 Extending along the length direction of the second connecting section 12 . With such a structural arrangement, the second opening window 142 can easily ensure the structural strength of the second connecting section 12 in the length direction, increase the resistance to bending, and avoid an uncontrolled bending transition.

Specifically, there are multiple second opening windows 142 in this embodiment, and the plurality of second opening windows 142 are arranged at intervals to better avoid bending and excessive deformation of the second connecting section 12 .

In this embodiment, the plurality of second opening windows 142 are spaced apart along the width direction of the second connecting section 12 . Adopting such a structural arrangement can better ensure the structural strength of the second connecting section 12 in the length direction and avoid failure of the fin 10 due to bending transition deformation.

Specifically, the second opening window 142 is provided at the end of the first opening window 141 . Adopting such a structural arrangement can effectively improve the strength of the structure through the second window 142 and reduce the situation of uncontrolled bending deformation. At the same time, the structural layout of the window structure is optimized to facilitate effective heat exchange.

There may be multiple first opening windows 141 in this embodiment. The multiple first opening windows 141 form multiple first opening window groups. Each first opening window group in the multiple first opening window groups includes multiple first opening windows 141 . The first opening windows 141 are spaced apart along the length direction of the second connecting section 12 , and a plurality of first window groups are spaced apart along the width direction of the second connecting section 12 . At least one second window 142 may be provided between two adjacent first window groups of the plurality of first window groups to effectively ensure structural strength and avoid bending deformation failure. Alternatively, when there are a plurality of second opening windows 142, at least one second opening window 142 among the plurality of second opening windows 142 is provided at one end of the plurality of first opening windows 142, and at least one of the plurality of second opening windows 142 is A second window 142 is provided at the other end of the plurality of first window groups to effectively ensure the structural strength of both ends and avoid uncontrolled bending.

In this embodiment, both the first connecting section 11 and the third connecting section 13 have a corrugated structure. The first connecting section 11 has a first wave pitch Fp ₁ , the second connecting section 12 has a second wave pitch Fp ₂ , and the third connecting section 11 has a corrugated structure. The connecting section 13 has a third wavelength pitch Fp ₃ ; where, Fp ₂ >Fp ₁ and Fp ₂ >Fp ₃ . 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 it can be folded at a certain angle or in half. Using the fin 10 provided in this embodiment, by making the second wave pitch larger than the first wave pitch and the second wave pitch larger than the third wave pitch, the second connecting section 12 forms a sparse fin area. The corrugated bending of the fins 10 is gentle, which reduces the difficulty of process processing, facilitates bending, avoids large stress during bending due to the large bending degree of the fins 10, and avoids causing damage to the fins 10 of the second connecting section 12 Damage situation. In addition, the second connecting section 12 can increase the air side heat exchange area, thereby improving the heat exchange capacity of the overall heat exchanger. Therefore, the use of the fin 10 provided in this embodiment can solve the technical problem in the prior art that it is inconvenient to bend the fin 10 .

It should be noted that during bending, the bending roller contacts the heat exchange flat tube 40 of the heat exchanger, and the heat exchange flat tube 40 is bent into a U-shaped structure, and the heat exchange flat tube 40 has a U-shaped A certain amount of twisting and deformation to facilitate the replacement of the plate-like structure The plate body of the heat flat tube 40 can form effective shielding. At the same time, the heat exchange flat tube 40 drives the fins 10 connected to the heat exchange flat tube 40 to bend. Specifically, the second connecting section 12 is bent, and the second connecting section 12 is bent into a U shape, and the second connecting section 12 has A certain degree of twisting and deformation is required to enable the second connecting section 12 to form effective shielding. As shown in Figures 7 to 10, the heat exchanger is bent into a double-row structure. Alternatively, as shown in Figures 11 to 13, the heat exchanger is bent into an A-shaped structure.

Preferably, in this embodiment, 2Fp ₁ ≤ Fp ₂ ≤ 6Fp ₁ and 2Fp ₁ ≤ Fp ₂ ≤ 6Fp ₁ can make the second connecting section 12 within an appropriate range and facilitate the bending of the second connecting section 12 .

It should be noted that after the second connecting section 12 is bent, the second connecting section 12 will be partially twisted, and there will also be a collapse between two adjacent pieces.

In this embodiment, the length direction of the second connecting section 12 and the height direction of the second connecting section 12 are perpendicular to the width direction of the second connecting section 12 , and the length direction of the second connecting section 12 is along the width direction of the second connecting section 12 . The width is Fw ₂ , the width of the first connecting section 11 is Fw ₁ , and the width of the third connecting section 13 is Fw ₃ ; where, Fw ₁ =Fw ₂ =Fw ₃ . Adopting such a structural arrangement facilitates manufacturing and reduces production difficulty.

Specifically, the length of the second connecting section 12 in this embodiment is BL (BL is the abbreviation of the English word corresponding to the bending length), and the width of the second connecting section 12 is Fw ₂ ; where, 1.5Fw ₂ ≤ BL ≤ 5.5Fw ₂ . Adopting such a structural arrangement can facilitate the second connecting section 12 to have a sufficient extension length, so as to make the corrugated bending of the second connecting section 12 gentle, thereby facilitating the bending of the second connecting section 12 in the length direction. Easy to manufacture. Specifically, when the length is less than 1.5Fw ₂ , the fins 10 are easily damaged by bending; when the length is greater than _5.5Fw2 , the second connecting section 12 (the second connecting section 12 can be understood as a sparse fin section) is too large. The length will affect the heat transfer capacity of the 10 unit area of the fin, causing the heat transfer capacity to decrease. Specifically, Fw is the abbreviation of the English word corresponding to the width of the fin, Tw is the abbreviation of the English word corresponding to the width of the flat tube, and Fw and Tw respectively represent the width value.

In this embodiment, the width of the second connecting section 12 is Fw ₂ , and the bending radius of the second connecting section 12 is R _-bend ; where 2Fw ₂ ≤ R- _bend ≤ 7Fw ₂ . Adopting such a structural arrangement can facilitate the effective bending of the second connecting section 12, avoid the inconvenient bending caused by too small a bending radius, and avoid the situation where the overall layout is affected by an excessively large bending radius. At the same time, by setting it within this size range, the difficulty of process processing can be reduced.

Specifically, the first connecting section 11 and the second connecting section 12 are spaced apart so that the second connecting section 12 can stretch to a certain extent in the gap between the first connecting section 11 and the second connecting section 12 when it is bent. The space avoids the deformation restriction of the second connecting section 12 by the first connecting section 11 and facilitates the bending deformation of the second connecting section 12 close to the first connecting section 11 . Alternatively, the third connecting section 13 is spaced apart from the second connecting section 12 so that the second connecting section 12 can have a certain expansion space in the gap between the third connecting section 13 and the second connecting section 12 when it is bent. , to avoid the deformation restriction of the second connecting section 12 by the third connecting section 13, and to facilitate the bending deformation of the second connecting section 12 close to the third connecting section 13. Alternatively, the first connecting section 11 and the third connecting section 13 are spaced apart from the second connecting section 12 so that the second connecting section 12 can be between the first connecting section 11 and the second connecting section 12 when being bent. There is a certain expansion space in the gap and the gap between the third connecting section 13 and the second connecting section 12 to avoid the deformation restriction of the second connecting section 12 by the first connecting section 11 and the third connecting section 13 so as to facilitate the second connecting section 11 and the second connecting section 12 . The overall deformation of the connecting section 12.

Preferably, the first connecting section 11 and the third connecting section 13 in this embodiment are spaced apart from the second connecting section 12 to facilitate the bending deformation of the second connecting section 12 . Specifically, the distance between the first connecting section 11 and the second connecting section 12 is Gap ₁ , and the distance between the third connecting section 13 and the second connecting section 12 is Gap ₂ .

In this embodiment, there is a first gap Gap ₁ between the first connecting section 11 and the second connecting section 12 , and there is a second gap Gap ₂ between the second connecting section 12 and the third connecting section 13 ; wherein, Gap ₁ &gt;0; and/or, Gap ₂ > 0.

Specifically, the height of the first connecting section 11 is Fh ₁ , the height of the second connecting section 12 is Fh2 , and the height of the third connecting section 13 is Fh ₃ ; where, Fh ₂ ≤ Min (Fh ₁ , Fh ₃ ). With such a structural arrangement, it is easy to form a height difference between the second connecting section 12 and the first connecting section 11, or the second connecting section 12 and the third connecting section 13. The setting of the height difference also facilitates the formation of a height difference between the second connecting section 12 and the first connecting section 11. Section 12 is bent. At the same time, this prevents the second connecting section 12 from being welded to the flat tube, thereby facilitating bending.

Specifically, Fp ₁ =Fp ₃ can be set. Adopting such a structural arrangement facilitates the first connecting section 11 and the third connecting section 13 to form the same structure, which facilitates production and manufacturing.

Specifically, Fh ₁ =Fh ₃ can be set. With such a structural arrangement, the first connecting section 11 and the third connecting section 13 can be easily formed into the same structure, which facilitates production and manufacturing.

In the first embodiment, the fin 10 is a whole fin 10 integrated with the body heat exchanger. However, in order to facilitate processing and production, generally Fp ₂ > Fp ₁ and Fp ₂ > Fp ₃ , At the same time, Fp ₁ =Fp ₃ . For the feasibility of process processing and production, generally Fw ₁ =Fw ₂ =Fw ₃ =Tw and Gap ₁ ≥ 0 and Gap ₂ ≥ 0.

In order to facilitate the bending process, a large number of experiments have proved that the general range of 1.5Tw≤BL (the length of the sparse fin area or called the length of the bending area)≤5.5Tw) is the optimal range.

There is a certain relationship between the bending radius of the product and the width of the flat tube, which satisfies 2Tw ≤ R _bend (bending radius) ≤ 7Tw.

The angle θ of the bent product can range from 0° to 180°.

The height of fin 10 in the sparse fin area is Fh ₂ ≤ Fh ₁ , and Fh ₂ ≤ Fh ₃ . Since the height of fin 10 is reduced, the welding rate in the middle bent sparse fin area is reduced or the fin 10 is not completely welded to the flat tube. Allowed.

In this way, the windward area of the product can be increased, and there are also fins 10 in the bending area to enhance heat transfer, and the overall heat transfer capacity is enhanced; the anti-corrosion ability of the product is enhanced (no finless flat tubes are exposed), the product life is extended, and the reliability is improved. Ensure the overall beauty of the product. The whole fin 10 is convenient for the equipment to process the fin 10 at one time; the product is bent in the sparse fin area, and the bending feasibility is high, and it can be folded at a certain angle or in half.

In the second embodiment, the heights of the fins 10 on both sides are the same, the distance between the fins on both sides is the same, and the height of the middle fin 10 is reduced.

Fp ₂ > Fp ₁ and Fp ₂ > Fp ₃ , and Fp ₁ = Fp ₃ ; Fw ₂ < Fw ₁ = Fw ₃ and Gap ₁ ≥ 0 and Gap ₂ ≥ 0.

In the third embodiment, the heights of the fins 10 on both sides are the same, the distance between the fins on both sides is the same, and the height of the middle fin 10 is increased.

Fp ₂ > Fp ₁ and Fp ₂ > Fp ₃ , while Fp ₁ =Fp ₃ ; Fw ₂ <Fw ₁ =Fw ₃ .

In the fourth embodiment, the heights of the fins 10 on both sides are inconsistent, the distance between the fins on both sides is the same, and the height of the middle fin 10 is less than or equal to the fin 10 with the lowest height among the two sides.

Fp ₂ > Fp ₁ and Fp ₂ > Fp ₃ , while Fp ₁ =Fp ₃ ; Fw ₂ ≤ Min (Fw ₁ , Fw ₃ ).

In the fifth embodiment, the heights of the fins 10 on both sides are inconsistent, the distance between the fins on both sides is the same, and the height of the middle fin 10 is greater than or equal to the tallest fin 10 on both sides.

Fp ₂ > Fp ₁ and Fp ₂ > Fp ₃ , while Fp ₁ =Fp ₃ ; Fw ₂ ≥ Max (Fw ₁ , Fw ₃ ).

In the sixth embodiment: the heights of the fins 10 on both sides are inconsistent and the distance between the fins on both sides is the same. The height of the middle fin 10 is greater than the lowest fin 10 on both sides and smaller than the highest fin 10 .

Fp ₂ > Fp ₁ and Fp ₂ > Fp ₃ , and Fp ₁ = Fp ₃ ; Min(Fw ₁ , Fw ₃ ) < Fw ₂ < Max (Fw ₁ , Fw ₃ ).

In the seventh embodiment: any of the above alternative requirements are met, and the distance between the two sides is allowed to be inconsistent, which is also within the scope of this patent protection.

Fp ₂ > Fp ₁ and Fp ₂ > Fp ₃ , while Fp ₁ > Fp ₃ or Fp ₁ < Fp ₃ .

In the eighth embodiment: the fins 10 in the bending area are gradually sparse from the middle to both ends to cope with the deformation of the bending area.

As shown in Figures 3 to 6 (the Tw direction in the drawings is the width direction of the fin 10), in all the above embodiments, the first connecting section 11, the second connecting section 12 and the third connecting section 13 Both are provided with a window opening structure (the window opening structure may include a first opening window 141, a second opening window 142 and a third opening window 143), and the openings of the window opening structures on the first connecting section 11 and the third connecting section 13 They all extend in a direction perpendicular to the width of the fin 10 . A part of the window of the window structure on the second connecting section 12 extends along the width direction perpendicular to the fin 10 , and the other part of the window of the window structure on the second connecting section 12 extends along the width direction of the fin 10 . The window extending in the width direction of the fin 10 can facilitate the bending of the second connecting section 12 to better adapt to the deformation of the fin 10 in the length direction.

Specifically, in this embodiment, third opening windows 143 are provided on both the first connecting section 11 and the third connecting section 13 . There are multiple third opening windows 143 , and each third opening window 143 is located along the edge of the fin 10 Extending in the length direction (the length direction of the fin 10 is the same as the length direction of the second connecting section 12 ), the plurality of third opening windows 143 extend along the width direction of the fin 10 (the width direction of the fin 10 is the same as the length direction of the second connecting section 12 ). (same width direction) are set at intervals to improve the heat transfer effect. Specifically, the first connecting section 11 and the third connecting section 13 may have the same structure.

Another embodiment of the present application provides a heat exchanger. The heat exchanger in this embodiment includes the fins 10 provided in the above embodiment. The heat exchanger also includes a heat exchange flat tube 40, an inlet header 20 and an outlet header 30. The inlet header 20 and the outlet header 30 are respectively arranged on both sides of the heat exchange flat tube 40. There are multiple heat exchange flat tubes 40, and fins 10 are provided between two adjacent heat exchange flat tubes 40.

In this embodiment, the heat exchanger also includes an inlet header 20 and an outlet header 30. The inlet header 20 is provided at one end of the fin 10, and the radius of the inlet header 20 is R ₁ ; the outlet header 20 is disposed at one end of the fin 10. The tube 30 is provided at the other end of the fin 10, and the radius of the outlet header 30 is R ₂ ; where, Fw ₂ <R ₁ <R ₂ . Adopting such a structural arrangement can reduce the resistance of the medium inside the heat exchanger, especially the resistance of the inlet and outlet headers.

The distance between the plug-in ends of two adjacent heat exchange flat tubes 40 is Tp, which can make Fh ₂ <Tp to facilitate the bending of the second connecting section 12.

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 increased, the bending area also has fins to enhance heat exchange, and the overall heat exchange capacity is enhanced, which facilitates the bending section. Bend.

It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular forms are also intended to include the plural forms unless the context clearly indicates otherwise. Furthermore, it will be understood that when the terms "comprises" and/or "includes" are used in this specification, they indicate There are features, steps, operations, means, components and/or combinations thereof.

The relative arrangement of components and steps, numerical expressions, and numerical values set forth in these examples do not limit the scope of the application unless specifically stated otherwise. At the same time, it should be understood that, for convenience of description, the dimensions of various parts shown in the drawings are not drawn according to actual proportional relationships. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the authorized specification. In all examples shown and discussed herein, any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters refer to similar items in the following figures, so that once an item is defined in one figure, it does not need further discussion in subsequent figures.

In the description of this application, it should be understood that the orientation indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom", etc. Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description. Without explanation to the contrary, these directional words do not indicate and imply the referred devices or components. It must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the scope of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

For the convenience of description, spatially relative terms can be used here, such as "on...", "on...", "on the upper surface of...", "above", etc., to describe what is shown in the figure. The spatial relationship between one device or feature and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a feature in the figure is turned upside down, then one feature described as "above" or "on top of" other features or features would then be oriented "below" or "below" the other features or features. under other devices or structures". Thus, the exemplary term "over" may include both orientations "above" and "below." The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define parts is only to facilitate the distinction between corresponding parts. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood. To limit the scope of protection of this application.

The above descriptions are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

Claims (19)

A fin, characterized in that it includes: A first connecting section (11), a second connecting section (12) and a third connecting section (13). The second connecting section (12) is provided between the first connecting section (11) and the third connecting section. Between the sections (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 arranged oppositely. The first connecting end It is provided on the side of the second connecting end away from the third connecting section (13); the length of the second connecting section (12) is along the extending direction from the first connecting end to the second connecting end. direction; along the length direction of the second connecting section (12), the second connecting section (12) can bend and deform, so that the second connecting section (12) of the straight structure after bending is Form a curved strip structure. The fin according to claim 1, characterized in that the second connecting section (12) has a corrugated structure, and the wave trough position along the second connecting section (12) to the second connecting section (12) The direction of the wave peak position 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 second connecting section (12). The width direction of the second connecting section (12); Wherein, the second connecting section (12) is provided with a first opening window (141), the first opening window (141) is a strip opening, and the first opening window (141) is along the second The connecting section (12) extends in the width direction. The fin according to claim 2, characterized in that there are a plurality of first opening windows (141), and a plurality of the first opening windows (141) are arranged at intervals on the second connecting section (12). superior. The fin according to claim 3, characterized in that: A plurality of the first opening windows (141) are arranged at intervals along the length direction of the second connecting section (12); or, A plurality of the first opening windows (141) are spaced apart along the width direction of the second connecting section (12); or, The plurality of first window groups (141) form a plurality of first window groups, and each of the plurality of first window groups includes a plurality of first window groups along the second connecting section (12). ), the plurality of first window groups are spaced apart along the width direction of the second connecting section (12). The fin according to claim 3, characterized in that the second connecting section (12) is also provided with a second opening window (142), and the second opening window (142) and the first opening The windows (141) are arranged at intervals, the second opening window (142) is a strip-shaped opening, and the second opening window (142) extends along the length direction of the second connecting section (12). The fin according to claim 5, characterized in that there are multiple second opening windows (142), and the plurality of second opening windows (142) are arranged at intervals. The fin according to claim 6, characterized in that a plurality of the second opening windows (142) are spaced apart along the width direction of the second connecting section (12). The fin according to claim 6, characterized in that the second opening window (142) is provided at an end of the first opening window (141). The fin according to claim 6, characterized in that there are multiple first opening windows (141), and the plurality of first opening windows (141) form a plurality of first opening window groups, and the plurality of first opening windows (141) form a plurality of first opening window groups. Each of the first window groups includes a plurality of first windows (141) spaced apart along the length direction of the second connecting section (12). The plurality of first windows (141) are The groups are spaced apart along the width direction of the second connecting section (12); At least one second window (142) is provided between two adjacent first window groups of the plurality of first window groups; or, There are multiple second opening windows (142), and at least one second opening window (142) among the plurality of second opening windows (142) is provided at one end of the plurality of first opening window groups. , at least one second window (142) among the plurality of second windows (142) is provided at the other end of the plurality of first window groups. The fin according to claim 1, characterized in that the first connecting section (11), the second connecting section (12) and the third connecting section (13) are all corrugated structures, and the The first connecting section (11) has a first wave pitch Fp ₁ , the second connecting section (12) has a second wave pitch Fp ₂ , and the third connecting section (13) has a third wave pitch Fp ₃ ; Among them, Fp ₂ > Fp ₁ and Fp ₂ > Fp ₃ . The fin according to claim 10, characterized in that the length direction of the second connecting section (12) and the height direction of the second connecting section (12) are both perpendicular to the second connecting section (12). ), the width of the second connecting section (12) along the width direction of the second connecting section (12) is Fw ₂ , the width of the first connecting section (11) is Fw 1 , and the width of the second connecting section (12) is Fw ₂ . The width of the third connecting section (13) is Fw ₃ ; Among them, Fw ₁ =Fw ₂ =Fw ₃ . The fin according to claim 10, characterized in that the length of the second connecting section (12) is BL, and the width of the second connecting section (12) is Fw ₂ ; Among them, 1.5Fw ₂ ≤ BL ≤ 5.5Fw ₂ . The fin according to claim 10, characterized in that the width of the second connecting section (12) is Fw ₂ , and the bending radius of the second connecting section (12) is R _-bend ; Among them, 2Fw ₂ ≤ R _bend ≤ 7Fw ₂ . The fin according to claim 1, characterized in that: The first connecting section (11) and the second connecting section (12) are spaced apart; and/or, The third connecting section (13) is spaced apart from the second connecting section (12). The fin according to claim 1, characterized in that the height of the first connecting section (11) is Fh ₁ , the height of the second connecting section (12) is Fh 2 , and the height of the third connecting section is Fh ₂ The height of (13) is Fh ₃ ; Among them, Fh ₂ ≤ Min (Fh ₁ , Fh ₃ ). The fin according to claim 15, characterized in that Fh ₁ =Fh ₃ . The fin according to claim 10, characterized in that Fp ₁ =Fp ₃ . A heat exchanger, characterized in that the heat exchanger includes the fin according to any one of claims 1 to 17. The heat exchanger according to claim 18, characterized in that the heat exchanger further includes: The inlet header (20) is provided at one end of the fin, and the radius of the inlet header (20) is R ₁ ; The outlet header (30) is provided at the other end of the fin, and the radius of the outlet header (30) is R ₂ ; Among them, Fw ₂ <R ₁ <R ₂ .