Heat sink and heat exchanger

Abstract

The application relates to the technical field of heat exchange, in particular to a heat dissipation fin and a heat exchanger. The heat dissipation fin comprises a fin body, a turbulence structure and a reinforcing rib. The fin body is provided with a plurality of insertion grooves which are formed by extending inward along the width direction of the fin body from at least one side, and the plurality of insertion grooves are distributed along the length direction of the fin body. The turbulence structure is located on the fin body, and a plurality of turbulence structures are distributed along the width direction of the fin body to form a turbulence group. Along the length direction of the fin body, at least two turbulence groups distributed at intervals are arranged between two adjacent insertion grooves, and a reinforcing rib is arranged between the adjacent turbulence groups between the two adjacent insertion grooves. The reinforcing rib extends along the width direction of the fin body, protrudes along the thickness direction of the fin body and is connected to the fin body. The heat dissipation fin and the heat exchanger provided by the application solve the problem of low structural strength of the existing heat dissipation fin on the basis of maintaining the turbulence structure.

Description

Technical Field

[0001] This application relates to the field of heat exchange technology, and in particular to a heat dissipation fin and a heat exchanger. Background Technology

[0002] As a crucial component of air conditioning systems, heat exchangers play a vital role in exchanging heat with the external environment. Currently, heat exchangers typically consist of flat tubes and heat dissipation fins. The flat tubes are inserted into slots on the heat dissipation fins, and the heat exchange efficiency of the flat tubes is improved through heat exchange between the heat dissipation fins and the air.

[0003] In related technologies, heat sink fins are equipped with turbulence structures, which can change the airflow state and thus improve heat exchange efficiency. However, the current turbulence structures on heat sink fins reduce the structural strength of the fins, making them prone to deformation and damage when inserted into the slots, thus increasing the cost of the heat exchanger. Utility Model Content

[0004] Therefore, it is necessary to provide a heat sink fin and heat exchanger to solve the problem of low structural strength of existing heat sink fins while maintaining the turbulence structure.

[0005] This application provides a heat dissipation fin, which includes a fin body, a flow-dispersing structure, and reinforcing ribs. The fin body has multiple slots, which extend inward from at least one side along the width direction of the fin body, and the multiple slots are spaced apart along the length direction of the fin body. The flow-dispersing structure is located on the fin body, and the multiple flow-dispersing structures are spaced apart along the width direction of the fin body to form flow-dispersing groups. Along the length direction of the fin body, at least two spaced flow-dispersing groups are disposed between two adjacent slots, and the reinforcing ribs are disposed between adjacent flow-dispersing groups located between two adjacent slots. The reinforcing ribs extend along the width direction of the fin body and protrude along the thickness direction of the fin body and are connected to the fin body.

[0006] In one embodiment, the height of the reinforcing rib is L, where 0.05mm ≤ L ≤ 0.4mm.

[0007] In one embodiment, the fin body has a mounting groove, at least a portion of the reinforcing rib extends into the mounting groove and is connected to the opposite side walls of the mounting groove.

[0008] In one embodiment, the cross-sectional shape of the reinforcing rib is semi-circular, trapezoidal, or rectangular.

[0009] In one embodiment, the turbulence structure is a heat dissipation bridge.

[0010] In one embodiment, at least a portion of the turbulence structures in each turbulence group have a different height than the other turbulence structures.

[0011] In one embodiment, the side of the fin body with the slot is defined as the leeward side, and the side of the fin body away from the slot is defined as the windward side. Each of the turbulence groups includes six turbulence structures, and the heights of the six turbulence structures are defined as M1, M2, M3, M4, M5, and M6 respectively along the direction from the windward side to the leeward side; wherein, M1=M2>M3=M4>M5=M6; or, M6=M5>M4=M3>M2=M1; or, M6=M5>M4=M3=M2=M1; or, M1=M3=M5>M2=M4=M6; or, M1=M3>M5=M2>M4=M6; or, M1=M4>M2=M5>M3=M6.

[0012] In one embodiment, the protrusion direction of a plurality of the turbulence structures in one of the turbulence groups relative to the fin body is different from the protrusion direction of a plurality of the turbulence structures in another adjacent turbulence group relative to the fin body.

[0013] In one embodiment, the plurality of turbulence structures in each of the turbulence groups all have the same convex direction relative to the fin body.

[0014] In one embodiment, the turbulence group includes a plurality of turbulence units distributed along the width direction of the fin body, and any two adjacent turbulence units have opposite convex directions relative to the fin body; wherein each turbulence unit includes one or more turbulence structures.

[0015] In one embodiment, the shortest distance between two adjacent slots is C, and the length of the orthogonal projection of the turbulence structure onto the fin body along the thickness direction of the fin body is E, wherein 0.25≤E / C≤0.4.

[0016] In one embodiment, the width of the turbulence structure is D, and the spacing between adjacent turbulence structures in each turbulence group is H; wherein, 0.6mm≤D≤2mm, and / or, 0.5mm≤H≤2mm, and / or, 0.5≤H / D≤1.5.

[0017] In one embodiment, the height of the turbulence structure is F, and 0.5mm≤F≤0.9mm; and / or, the angle formed between the portion of the turbulence structure connected to the fin body and the fin body is G, and 30°≤G≤40°.

[0018] In one embodiment, the shortest distance between the center line of one of the slots along the length direction of the fin body and the center line of another adjacent slot along the length direction of the fin body is defined as A, the width of the fin body is B, and the shortest distance between two adjacent slots is C; wherein, 0.5≤B / A≤1.5, and / or, 0.75≤C / A≤0.9.

[0019] In one embodiment, the fin body is provided with a flange, the flange surrounding at least a portion of the periphery of the slot; wherein the height of the flange is K, and 0.4mm≤K≤0.7mm.

[0020] In one embodiment, the fin body has a corrugated structure on the side away from the slot along its width direction; wherein the height of the corrugated structure is J, and 0.1mm≤J≤0.5mm.

[0021] This application also provides a heat exchanger, which includes a flat tube, a distributor, a manifold, and heat dissipation fins as described in any of the above embodiments. The heat dissipation fins are multiple in number and spaced apart from each other, arranged side-by-side. Each heat dissipation fin has a slot. The flat tube is inserted into the slot. The distributor is connected to one end of the multiple flat tubes for distributing refrigerant into the multiple flat tubes. The manifold is connected to the other end of the multiple flat tubes for collecting the refrigerant within the multiple flat tubes.

[0022] Compared with the prior art, the heat dissipation fins and heat exchangers provided in this application form turbulence groups by arranging turbulence structures and setting reinforcing ribs between each pair of adjacent turbulence groups. This can effectively enhance the structural strength of the fin body at this location while maintaining the turbulence structure and reduce the probability of the fin body deforming under stress. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A partial structural schematic diagram of a heat exchanger according to an embodiment of this application;

[0025] Figure 2 A schematic diagram of the structure of a heat sink fin provided in this application;

[0026] Figure 3A partial structural schematic diagram of a heat sink fin provided in this application;

[0027] Figure 4 A top view of a heat dissipation fin according to an embodiment provided in this application;

[0028] Figure 5 for Figure 4 Sectional view at point MM;

[0029] Figure 6 for Figure 4 A cross-sectional view at point NN;

[0030] Figure 7 for Figure 4 A cross-sectional view of another embodiment at point NN;

[0031] Figure 8 for Figure 4 A cross-sectional view of another embodiment at point NN.

[0032] The symbols in the diagram represent the following meanings:

[0033] 100. Heat exchanger; 10. Heat dissipation fins; 101. Slot; 102. Mounting slot; 11. Fin body; 12. Baffle assembly; 121. Baffle structure; 1211. Plate; 1212. Connecting plate; 13. Reinforcing rib; 14. Flanged edge; 15. Corrugated structure; 20. Flat tube. Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0039] As a crucial component of air conditioning systems, heat exchangers play a vital role in exchanging heat with the external environment. Currently, heat exchangers typically consist of flat tubes and heat dissipation fins. The flat tubes are inserted into slots on the heat dissipation fins, and the heat exchange efficiency of the flat tubes is improved through heat exchange between the heat dissipation fins and the air.

[0040] In related technologies, heat sink fins are equipped with turbulence structures, which can change the airflow state and thus improve heat exchange efficiency. However, the current turbulence structures on heat sink fins reduce the structural strength of the fins, making them prone to deformation and damage when inserted into the slots, thus increasing the cost of the heat exchanger.

[0041] Please see Figures 1-8To address the issue of low structural strength in existing heat sink fins while maintaining the turbulence-dissipating structure, this application provides a heat sink fin 10. The heat sink fin 10 includes a fin body 11, a turbulence-dissipating structure 121, and reinforcing ribs 13. The fin body 11 has multiple slots 101 extending inward from at least one side along the width direction of the fin body 11. The multiple slots 101 are spaced apart along the length direction of the fin body 11 for insertion into the flat tube 20 of the heat sink. The turbulence-dissipating structure 121 is located on the fin body 11, and multiple turbulence-dissipating structures 121 are spaced apart along the width direction of the fin body 11 to form turbulence groups 12. Along the length direction of the fin body 11, at least two spaced-apart turbulence groups 12 are located between adjacent slots 101, and reinforcing ribs 13 are provided between adjacent turbulence groups 12 located between adjacent slots 101. The reinforcing ribs 13 extend along the width direction of the fin body 11 and protrude along the thickness direction of the fin body 11, connecting to the fin body 11.

[0042] It is understood that this application forms a turbulence group 12 by arranging turbulence structures 121 and provides reinforcing ribs 13 between every two adjacent turbulence groups 12, which can effectively enhance the structural strength of the fin body 11 at this location while maintaining the turbulence structure 121 and reduce the probability of the fin body 11 being deformed by force.

[0043] Furthermore, the height of the reinforcing rib 13 is L, 0.05mm≤L≤0.4mm. By controlling the height range of the reinforcing rib 13 to 0.05mm~0.4mm, not only can a better reinforcement effect be achieved, but also the wind-side turbulence can be further enhanced, improving the heat exchange effect. At the same time, it can avoid the situation where the reinforcing rib 13 is too high and exceeds the material elongation, thus increasing the risk of tearing.

[0044] For example, the height of the reinforcing rib 13 can be set to 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm or 0.4mm, etc., which will not be listed here.

[0045] Specifically, in this embodiment, there are two baffle groups 12 between two adjacent slots 101, and the two baffle groups 12 are usually arranged symmetrically with respect to the reinforcing ribs 13 to facilitate processing and improve the overall structural strength. Of course, in other embodiments, the two baffle groups 12 may also be arranged asymmetrically.

[0046] In one embodiment, such as Figure 4 and Figure 5 As shown, a mounting groove 102 is provided on the fin body 11, and at least a portion of the reinforcing rib 13 extends into the mounting groove 102 and is connected to the opposite side walls of the mounting groove 102. In this way, the structural strength of the fin body 11 can be improved while reducing costs.

[0047] Specifically, in this embodiment, such as Figure 5 As shown, the reinforcing rib 13 has a semi-circular cross-sectional shape, and both sides of the reinforcing rib 13 smoothly transition to the inner wall of the mounting groove 102 to improve the reliability of the connection. Furthermore, to further enhance the reliability of the structure, the reinforcing rib 13 and the fin body 11 can be configured as an integral structure. Of course, in other embodiments, the cross-sectional shape of the reinforcing rib 13 can also be trapezoidal or rectangular, etc.

[0048] Furthermore, the fin body 11 has a corrugated structure 15 on the side away from the slot 101 along its width direction. The corrugated structure 15 facilitates the drainage of condensate, allowing meltwater to flow directly down the corrugated structure 15 during defrosting, which improves the drainage rate and thus enhances the heat exchange efficiency of the heat exchanger 100. Here, the mounting groove 102 and the reinforcing rib 13 can extend to the corrugated structure 15 to increase the strength reinforcement range of the reinforcing rib 13. The height of the corrugated structure 15 is J, and 0.1mm≤J≤0.5mm. Increasing the height of the corrugated structure 15 further enhances the wind-side turbulence, improves the heat exchange effect, and also helps to increase the rigidity of the fin body 11 and reduce the probability of deformation.

[0049] Optionally, the value of J can be 0.1mm, 0.2mm, 0.3mm, 0.4mm or 0.5mm, etc.

[0050] In one embodiment, such as Figure 2 and Figure 3 As shown, the turbulence structure 121 serves as a heat dissipation bridge, forming an enhanced heat transfer structure on the fin body 11 to improve the heat transfer efficiency of the heat dissipation fins 10. In other embodiments, the turbulence structure 121 can also be configured as a louver. Of course, a portion of the turbulence structure 121 can be configured as a heat dissipation bridge, while a portion of the turbulence structure 121 can be configured as a louver.

[0051] This application specifically uses the turbulence structure 121 as a heat dissipation bridge for explanation.

[0052] Specifically, the heat dissipation bridge includes a plate 1211 and connecting plates 1212 disposed at opposite ends of the plate 1211. The connecting plates 1212 are used to connect the plate 1211 to the fin body 11 and to create a gap between the plate 1211 and the fin body 11, thereby forming a bridge-like structure.

[0053] For ease of manufacturing, in one embodiment, the height of the multiple turbulence structures 121 in each turbulence group 12 can be set to be the same, that is, the height of the multiple heat dissipation bridges is the same.

[0054] In another embodiment, such as Figures 6-8As shown, to enhance the turbulence effect of the turbulence structure 121, at least some of the turbulence structures 121 in each turbulence group 12 have different heights than the other turbulence structures 121. This creates fluctuations in the height of the heat dissipation bridge, allowing the airflow to disrupt the thermal boundary layer as it passes over it, thereby improving heat transfer efficiency.

[0055] For example, each turbulence group 12 includes six turbulence structures 121. The side of the fin body 11 with the slot 101 is defined as the leeward side, and the side of the fin body 11 away from the slot 101 is defined as the windward side. The heights of the six turbulence structures 121 are defined as M1, M2, M3, M4, M5 and M6 respectively along the direction from the windward side to the leeward side.

[0056] In one embodiment, such as Figure 6 As shown, M1=M2>M3=M4>M5=M6.

[0057] In one embodiment, M6=M5>M4=M3>M2=M1.

[0058] In one embodiment, M6=M5>M4=M3=M2=M1.

[0059] In one embodiment, such as Figure 7 As shown, M1=M3=M5>M2=M4=M6.

[0060] In one embodiment, M1=M3>M5=M2>M4=M6.

[0061] In one embodiment, M1=M4>M2=M5>M3=M6.

[0062] In summary, the above designs can achieve variations in the bridging height of the turbulence structure 121, thereby increasing airflow turbulence and improving heat transfer performance. It should be noted that this application is not limited to the above designs and other schemes capable of achieving variations in the bridging height may also be used.

[0063] Here, the protruding direction of the reinforcing rib 13 relative to the fin body 11 is defined as upward, and its opposite direction is defined as downward. Typically, the turbulence structures 121 in multiple turbulence groups 12 can all protrude upward for ease of processing. Alternatively, the protruding directions of the multiple turbulence structures 121 in one turbulence group 12 relative to the fin body 11 can differ from the protruding directions of the multiple turbulence structures 121 in another adjacent turbulence group 12. For example, the turbulence structures 121 in one turbulence group 12 can all protrude upward, while the turbulence structures 121 in another turbulence group 12 can all protrude downward, thereby further enhancing airflow turbulence and improving heat exchange efficiency.

[0064] Furthermore, in one embodiment, the protrusion directions of the plurality of turbulence structures 121 in each turbulence group 12 relative to the fin body 11 are all the same. For example, this facilitates the processing of the turbulence structures 121 and reduces the processing difficulty.

[0065] In another embodiment, the protrusion directions of the plurality of turbulence structures 121 in the turbulence group 12 relative to the fin body 11 may also be set to be different to further increase air-side turbulence and improve heat transfer performance.

[0066] Specifically, such as Figure 8 As shown, the turbulence group 12 includes multiple turbulence units distributed along the width direction of the fin body 11. Furthermore, the protrusion directions of any two adjacent turbulence units relative to the fin body 11 are opposite. Each turbulence unit includes one or more turbulence structures 121. That is, the multiple turbulence structures 121 in the turbulence group 12 can be arranged in a front-back configuration, or in a two-upward-facing and two-downward-facing configuration.

[0067] In one embodiment, such as Figure 4 As shown, the shortest distance A between the centerline of one slot 101 along the length of the fin body 11 and the centerline of another adjacent slot 101 along the length of the fin body 11 is defined as A, and the width of the fin body 11 is defined as B, where 0.5 ≤ B / A ≤ 1.5. This balances the heat exchange performance and cost of the fin body 11. It is easy to understand that if B / A > 1.5, the fin body 11 is wider, increasing the contact area with air and improving the heat exchange effect, but leading to increased costs. If B / A < 0.5, the fin body 11 is narrower, resulting in decreased heat exchange performance, but also reducing processing difficulty and costs.

[0068] Optionally, the value of B / A can be 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, or 1.5, etc., which will not be listed here. Preferably, 0.6 ≤ B / A ≤ 1.2 can be set.

[0069] Furthermore, in one embodiment, the shortest distance between two adjacent slots 101 is C, where 0.75 ≤ C / A ≤ 0.9. It is easy to understand that when C / A > 0.9, the width of the slot 101 decreases, resulting in a thinner flat tube 20. This generates less wind resistance, improving heat exchange performance, but it also increases the refrigerant resistance within the flat tube 20. When C / A < 0.75, the thickness of the flat tube 20 is greater, resulting in greater wind resistance and a decrease in refrigerant resistance within the flat tube 20, which is detrimental to enhanced heat exchange within the tube, thus leading to a decline in heat exchange performance.

[0070] Optionally, the value of C / A can be 0.75, 0.8, 0.85 or 0.9, etc., which will not be listed here.

[0071] In one embodiment, such as Figure 4 As shown, the length of the orthogonal projection of the turbulence structure 121 onto the fin body 11 along the thickness direction is E, where 0.25 ≤ E / C ≤ 0.4. This balances the wind resistance and heat transfer performance of the turbulence structure 121. It is easy to understand that when E / C > 0.4, the length of the turbulence structure 121 is longer, resulting in a larger turbulence area and improved heat transfer performance, but this leads to an excessive increase in wind resistance. When E / C < 0.25, the length of the turbulence structure 121 is shorter, resulting in decreased heat transfer performance, but this also reduces the wind resistance of the turbulence structure 121.

[0072] Optionally, the value of E / C can be 0.25, 0.3, 0.35 or 0.4, etc., which will not be listed here.

[0073] In one embodiment, such as Figure 4 As shown, the width of the turbulence structure 121 is D, and 0.6mm≤D≤2mm. Thus, by reasonably setting the width of the turbulence structure 121, the number of turbulence structures 121 on the fin body 11 can be controlled. For example, when the width of the turbulence structure 121 is reduced, more turbulence structures 121 can be set on the fin body 11, thereby further improving the heat exchange effect. However, this will also lead to a corresponding increase in wind resistance.

[0074] Optionally, the value of D can be 0.6mm, 1mm, 1.5mm or 2mm, etc., which will not be listed here.

[0075] It should be noted that the width of different turbulence structures 121 can be set to be the same to ensure stable gas turbulence effect and reduce wind resistance. Of course, the width of different turbulence structures 121 can also be set to be different.

[0076] Furthermore, in one embodiment, the spacing between adjacent turbulence structures 121 in each turbulence group 12 is H, and 0.5mm≤H≤2mm. Thus, by reasonably setting the spacing between adjacent turbulence structures 121, the number of turbulence structures 121 on the fin body 11 can also be controlled. For example, when H is reduced, more turbulence structures 121 can be set on the fin body 11, thereby further improving the heat exchange effect, but this will lead to a corresponding increase in processing difficulty.

[0077] Optionally, the value of H can be 0.5mm, 1mm, 1.5mm or 2mm, etc., which will not be listed here.

[0078] Furthermore, the value can be set to 0.5 ≤ H / D ≤ 1.5. It is easy to understand that the smaller the value of H / D, the more turbulence structures 121 there are, and the better the heat transfer performance, but it will lead to increased processing difficulty.

[0079] Optionally, the value of H / D can be 0.5, 1, or 1.5, etc., which will not be listed here.

[0080] In one embodiment, such as Figure 5 As shown, the height of the turbulence structure 121 is F, and 0.5mm ≤ F ≤ 0.9mm. The angle formed between the part of the turbulence structure 121 connected to the fin body 11 and the fin body 11 is G, and 30° ≤ G ≤ 40°. It is easy to understand that if the height of the turbulence structure 121 is too high and the angle is too large, it is more likely to exceed the material elongation and cause cracks. If the height of the turbulence structure 121 is too low, it will lead to a decrease in heat transfer performance.

[0081] Optionally, the value of F can be 0.5mm, 0.6mm, 0.7mm, 0.8mm or 0.9mm, etc., and the value of G can be 30°, 35° or 40°, etc., which will not be listed here.

[0082] In one embodiment, such as Figure 5 As shown, the fin body 11 is provided with a flange 14, which surrounds at least a portion of the periphery of the slot 101. The height of the flange 14 is K, and 0.4mm ≤ K ≤ 0.7mm. It is easy to understand that increasing the height of the flange 14 increases the contact area with the flat tube 20, improving the heat exchange effect; however, if it is too high, it will exceed the material elongation rate, thereby increasing the risk of tearing.

[0083] Please see Figure 1 This application also provides a heat exchanger 100, which includes a flat tube 20, a distributor (not shown), a manifold (not shown), and heat dissipation fins 10 of any of the above embodiments. The number of heat dissipation fins 10 is multiple, and the multiple heat dissipation fins 10 are spaced apart and arranged side by side. The flat tube 20 is inserted and installed in the slot 101.

[0084] Furthermore, there are multiple flat tubes 20. A distributor is connected to one end of each flat tube 20 to distribute refrigerant into the flat tubes 20. A manifold is connected to the other end of each flat tube 20 to collect the refrigerant within the flat tubes 20. In this way, the distribution and collection of the refrigerant are achieved.

[0085] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0086] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A heat dissipation fin, characterized in that, It includes a fin body (11), a flow-disrupting structure (121) and a reinforcing rib (13). The fin body (11) has a plurality of slots (101). The slots (101) are formed by extending inward from at least one side along the width direction of the fin body (11). The plurality of slots (101) are spaced apart along the length direction of the fin body (11). The turbulence structure (121) is located on the fin body (11), and multiple turbulence structures (121) are distributed at intervals along the width direction of the fin body (11) to form turbulence groups (12); along the length direction of the fin body (11), at least two turbulence groups (12) distributed at intervals are provided between two adjacent slots (101), and the reinforcing ribs (13) are provided between adjacent turbulence groups (12) located between two adjacent slots (101). The reinforcing rib (13) extends along the width direction of the fin body (11) and protrudes along the thickness direction of the fin body (11) and is connected to the fin body (11).

2. The heat dissipation fins according to claim 1, characterized in that, The height of the reinforcing rib (13) is L, 0.05mm≤L≤0.4mm.

3. The heat dissipation fins according to claim 1, characterized in that, The fin body (11) has an installation groove (102) and at least part of the reinforcing rib (13) extends into the installation groove (102) and is connected to the opposite side walls of the installation groove (102).

4. The heat dissipation fins according to claim 1, characterized in that, The cross-sectional shape of the reinforcing rib (13) is semi-circular, trapezoidal or rectangular.

5. The heat dissipation fins according to claim 1, characterized in that, The turbulence structure (121) is a heat dissipation bridge.

6. The heat dissipation fins according to claim 5, characterized in that, The height of at least a portion of the turbulence structures (121) in each of the turbulence groups (12) is different from the height of the other turbulence structures (121).

7. The heat dissipation fins according to claim 6, characterized in that, The side of the fin body (11) with the slot (101) is defined as the leeward side, and the side of the fin body (11) away from the slot (101) is defined as the windward side. Each of the turbulence groups (12) includes six turbulence structures (121), and the heights of the six turbulence structures (121) are defined as M1, M2, M3, M4, M5 and M6 respectively along the direction from the windward side to the leeward side. Among them, M1=M2>M3=M4>M5=M6; Alternatively, M6=M5>M4=M3>M2=M1; Alternatively, M6=M5>M4=M3=M2=M1; Alternatively, M1=M3=M5>M2=M4=M6; Alternatively, M1=M3>M5=M2>M4=M6; Alternatively, M1=M4>M2=M5>M3=M6.

8. The heat dissipation fins according to claim 5, characterized in that, The protrusion direction of a plurality of the turbulence structures (121) in one of the turbulence groups (12) relative to the fin body (11) is different from the protrusion direction of a plurality of the turbulence structures (121) in another adjacent turbulence group (12) relative to the fin body (11).

9. The heat dissipation fins according to any one of claims 5-8, characterized in that, The multiple turbulence structures (121) in each of the turbulence groups (12) have the same convex direction relative to the fin body (11).

10. The heat dissipation fins according to any one of claims 5-8, characterized in that, The turbulence group (12) includes a plurality of turbulence units, which are distributed along the width direction of the fin body (11), and any two adjacent turbulence units have opposite convex directions relative to the fin body (11). Each of the turbulence units includes one or more of the turbulence structures (121).

11. The heat dissipation fins according to any one of claims 5-8, characterized in that, The shortest distance between two adjacent slots (101) is C, and the length of the orthogonal projection of the turbulence structure (121) on the fin body (11) along the thickness direction of the fin body (11) is E, where 0.25≤E / C≤0.

4.

12. The heat dissipation fins according to any one of claims 5-8, characterized in that, The width of the turbulence structure (121) is D, and the spacing between adjacent turbulence structures (121) in each turbulence group (12) is H; Wherein, 0.6mm≤D≤2mm, and / or, 0.5mm≤H≤2mm, and / or, 0.5≤H / D≤1.

5.

13. The heat dissipation fins according to any one of claims 5-8, characterized in that, The height of the disturbance structure (121) is F, and 0.5mm≤F≤0.9mm; And / or, the angle between the portion of the turbulence structure (121) connected to the fin body (11) and the fin body (11) is G, and 30°≤G≤40°.

14. The heat dissipation fins according to any one of claims 1-8, characterized in that, Define A as the shortest distance between the center line of one of the slots (101) along the length direction of the fin body (11) and the center line of the other adjacent slot (101) along the length direction of the fin body (11), the width of the fin body (11) as B, and the shortest distance between two adjacent slots (101) as C. Wherein, 0.5≤B / A≤1.5, and / or, 0.75≤C / A≤0.

9.

15. The heat dissipation fins according to any one of claims 1-8, characterized in that, The fin body (11) is provided with a flange (14), which surrounds at least a portion of the periphery of the slot (101); The height of the flange (14) is K, and 0.4mm≤K≤0.7mm.

16. The heat dissipation fins according to any one of claims 1-8, characterized in that, The fin body (11) has a corrugated structure (15) on the side away from the slot (101) along its own width direction. The height of the corrugated structure (15) is J, and 0.1mm≤J≤0.5mm.

17. A heat exchanger, characterized in that, It includes a flat tube (20), a distributor, a collector, and heat dissipation fins as described in any one of claims 1-16, wherein there are multiple heat dissipation fins, and the multiple heat dissipation fins are spaced apart and arranged side by side, and slots (101) are provided on the heat dissipation fins. The flat tube (20) is inserted into the slot (101). There are multiple flat tubes (20). The distributor is connected to one end of the multiple flat tubes (20) and is used to distribute refrigerant into the multiple flat tubes (20). The manifold is connected to the other end of the multiple flat tubes (20) and is used to collect the refrigerant in the multiple flat tubes (20).

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