Fin, heat exchanger and air conditioner

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a fin, a heat exchanger and an air conditioner, the fin comprises a substrate and a bridge piece assembly, the bridge piece assembly comprises at least one bridge piece, the bridge piece is arranged on the substrate and protrudes out of the substrate in the thickness direction of the substrate, and the bridge piece is provided with a first end and a second end which are oppositely arranged in the length direction of the bridge piece; a groove is formed in the connecting position of the first end of the bridge piece and / or the second end of the bridge piece and the substrate, the groove is located in at least one side of the bridge piece in the width direction of the bridge piece, the groove penetrates through the substrate and the bridge piece in the thickness direction of the substrate, at least part of the inner wall face of the groove is an inwards-concave arc-shaped wall face, and the arc-shaped wall face is at least formed on the substrate. According to the fin disclosed by the embodiment of the invention, the drainage performance of the fin can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of heat exchangers, and particularly to a fin, a heat exchanger, and an air conditioner. Background Art

[0002] When the air conditioner operates in summer, when the surface temperature of the finned tube heat exchanger is lower than the dew point temperature of the air flow passing through the finned tube heat exchanger, water vapor in the air will condense on the fin surface to form condensate, and condensation appears on the fin surface. The condensate on the fin surface will narrow the flow channel of the air flow, affecting the air volume of the heat exchanger, and the condensate on the fin needs to be discharged in time. In related technologies, adding a hydrophilic layer on the surface of the heat exchanger or changing the installation inclination angle of the heat exchanger is mostly used to improve the drainage performance of the heat exchanger. However, when the fin is a bridge-type fin, the drainage performance of the fin is significantly reduced. Summary of the Utility Model

[0003] The present disclosure aims to solve at least one of the technical problems in the related technologies to some extent. To this end, an embodiment of the present disclosure provides a fin that can improve the drainage performance of the fin.

[0004] An embodiment of the present disclosure also provides a heat exchanger and an air conditioner.

[0005] The fin of the embodiment of the present disclosure includes: a base sheet; a bridge sheet assembly, the bridge sheet assembly includes at least one bridge sheet, the bridge sheet is provided on the base sheet and protrudes from the base sheet in the thickness direction of the base sheet, the bridge sheet has a first end and a second end arranged oppositely in its length direction, and a groove is provided at the connection between the first end and / or the second end of the bridge sheet and the base sheet, the groove is located on at least one side of the bridge sheet in the width direction of the bridge sheet, the groove penetrates through the base sheet and the bridge sheet in the thickness direction of the base sheet, at least part of the inner wall surface of the groove is a concave arc-shaped wall surface, and the arc-shaped wall surface is at least formed on the base sheet.

[0006] In the embodiment of the present disclosure, a groove is provided on at least one side of the front side and the rear side at the connection between the bridge sheet and the base sheet, and the groove penetrates through the connection between the base sheet and the bridge sheet in the up and down direction, so that the inner wall surface formed on the base sheet surrounding the groove and the inner wall surface formed on the bridge sheet surrounding the groove are connected to form the inner wall surface of the groove. Then, at least part of the inner wall surface formed on the base sheet is set as a concave arc-shaped wall surface, so that the edges at the connection between the base sheet and the bridge sheet are separated from each other, and the setting of the concave arc-shaped wall surface destroys the three-dimensional space angle formed at the connection between the base sheet and the bridge sheet, increasing the difficulty of condensate adhesion, effectively avoiding the accumulation of condensate at the connection between the base sheet and the bridge sheet, and improving the drainage performance of the fin.

[0007] In some embodiments, the groove includes a first recess and a second recess that communicate with each other. The first recess is formed on the substrate, at least part of the inner wall surface of the first recess is a concave first arc surface, the second recess is formed on the bridge piece, and at least part of the inner wall surface of the second recess is a concave second arc surface. The first arc surface and the second arc surface are connected to form the arc wall surface.

[0008] In some embodiments, the inner wall surface of the first recess includes a first wall surface and the first arc surface, the inner wall surface of the second recess includes a second wall surface and the second arc surface, and the first wall surface, the first arc surface, the second arc surface, and the second wall surface are sequentially connected to enclose the inner wall surface of the groove.

[0009] In some embodiments, the first wall surface is parallel to the length direction and the thickness direction of the substrate. In the projection plane orthogonal to the thickness direction of the substrate, an angle β is formed between the first wall surface and the second wall surface, and 0° < β < 90°.

[0010] In some embodiments, the length of the line connecting the two ends of the arc wall surface in its extending direction is A, the dimension of the bridge piece in the width direction of the substrate is B, and 0.1B ≤ A < 0.5B; and / or, the radius of the arc wall surface is greater than the critical nucleation radius, where the critical nucleation radius refers to the minimum radius at which a droplet exists and begins to grow on the fin; and / or, the central angle of the arc wall surface is α, and 90° ≤ α < 360°.

[0011] In some embodiments, the bridge piece includes a first connection section, a body, and a second connection section that are sequentially connected along its length direction. One end of the first connection section away from the body is connected to the substrate, one end of the second connection section away from the body is connected to the substrate, and the groove is provided at the connection between the first connection section and the substrate and at the connection between the second connection section and the substrate.

[0012] In some embodiments, the extending direction of the first connection section forms an angle with the length direction of the substrate, the extending direction of the second connection section forms an angle with the length direction of the substrate, and the extending direction of the body is parallel to the extending direction of the substrate.

[0013] In some embodiments, there are cuts between both sides of the bridge piece in its width direction and the substrate; and / or, the surfaces of at least one of the substrate and the bridge piece are coated with a hydrophilic layer; and / or, the bridge piece assembly includes multiple groups of the bridge pieces arranged at intervals in the length direction of the substrate, and each group of the bridge pieces includes at least two bridge pieces arranged at intervals in the width direction of the substrate; and / or, a plurality of through holes penetrating the substrate in the thickness direction of the substrate are formed on the substrate, and the plurality of through holes are arranged at intervals in the extending direction of the substrate, and the bridge piece assembly is disposed at least on one side of the through holes in the extending direction of the substrate.

[0014] The heat exchanger according to an embodiment of the present disclosure includes: fins, the fins being the fins described in the above embodiments; heat exchange tubes, the fins being sleeved on the heat exchange tubes, and the number of the heat exchange tubes being multiple, and the multiple heat exchange tubes are arranged in one-to-one correspondence with the tube holes of the fins.

[0015] In the heat exchanger according to an embodiment of the present disclosure, by providing a groove on at least one of the front side and the rear side of the connection between the bridge piece and the substrate, and penetrating the connection between the substrate and the bridge piece in the up and down direction, the inner wall surface formed on the substrate surrounding the groove and the inner wall surface formed on the bridge piece surrounding the groove are connected to form the inner wall surface of the groove, and at least a part of the inner wall surface formed on the substrate is set as an inwardly concave arc-shaped wall surface, so that the edges at the connection between the substrate and the bridge piece are separated from each other, and the setting of the inwardly concave arc-shaped wall surface destroys the three-dimensional space angle formed at the connection between the substrate and the bridge piece, increases the difficulty of condensate adhesion, effectively avoids the accumulation of condensate at the connection between the substrate and the bridge piece, and improves the drainage performance of the fins.

[0016] The air conditioner according to an embodiment of the present disclosure includes the heat exchanger described in the above embodiments.

[0017] In the air conditioner according to an embodiment of the present disclosure, by providing a groove on at least one of the front side and the rear side of the connection between the bridge piece and the substrate, and penetrating the connection between the substrate and the bridge piece in the up and down direction, the inner wall surface formed on the substrate surrounding the groove and the inner wall surface formed on the bridge piece surrounding the groove are connected to form the inner wall surface of the groove, and at least a part of the inner wall surface formed on the substrate is set as an inwardly concave arc-shaped wall surface, so that the edges at the connection between the substrate and the bridge piece are separated from each other, and the setting of the inwardly concave arc-shaped wall surface destroys the three-dimensional space angle formed at the connection between the substrate and the bridge piece, increases the difficulty of condensate adhesion, effectively avoids the accumulation of condensate at the connection between the substrate and the bridge piece, and improves the drainage performance of the fins. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the fins according to an embodiment of the present disclosure.

[0019] Figure 2It is a schematic diagram of another perspective of the fin of the embodiment of the present disclosure.

[0020] Figure 3 It is Figure 1 an enlarged schematic diagram of the position C in

[0021] Figure 4 It is Figure 2 an enlarged schematic diagram of the position D in

[0022] Figure 5 It is a schematic diagram of the bridge piece of the embodiment of the present disclosure.

[0023] Figure 6 It is Figure 5 an enlarged schematic diagram of the position E in

[0024] Figure 7 It is a schematic diagram of another perspective of the bridge piece of the embodiment of the present disclosure.

[0025] Figure 8 It is a schematic diagram of another perspective of the bridge piece of the embodiment of the present disclosure, and shows the dimension B of the bridge piece in the width direction of the substrate.

[0026] Figure 9 It is Figure 7 an enlarged schematic diagram of the position F in

[0027] Figure 10 It is Figure 7 an enlarged schematic diagram of the position F in

[0028] Reference numerals:

[0029] Substrate 1, tube hole 11,

[0030] Bridge piece assembly 2, bridge piece 21, first end 211, second end 212, first connecting section 213, body 214, second connecting section 215,

[0031] Groove 3, arc wall surface 31, first recess 32, first arc surface 321, first wall surface 322,

[0032] Second recess 33, second arc surface 331, second wall surface 332,

[0033] Notch 4, first connection point 51, second connection point 52, channel 6. Detailed implementation manners

[0034] The embodiments of the present disclosure will be described in detail below. Examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present disclosure, and should not be construed as a limitation to the present disclosure.

[0035] The fin of the embodiment of the present disclosure includes a substrate 1 and a bridge component 2. The bridge component 2 includes at least one bridge 21. The bridge 21 is disposed on the substrate 1 and protrudes from the substrate 1 in the thickness direction of the substrate 1. The bridge 21 has a first end 211 and a second end 212 that are oppositely arranged in its length direction (such as the left-right direction shown in Figure 1 ). A groove 3 is provided at the connection between the first end 211 of the bridge 21 and the substrate 1, or a groove 3 is provided at the connection between the second end 212 of the bridge 21 and the substrate 1, or grooves 3 are respectively provided at the connection between the first end 211 of the bridge 21 and the substrate 1 and the connection between the second end 212 of the bridge 21 and the substrate 1.

[0036] The groove 3 is located on at least one side of the bridge 21 in the width direction of the bridge 21 (such as the front-back direction shown in Figure 1 ). The groove 3 penetrates through the connection between the substrate 1 and the bridge 21 in the thickness direction of the substrate 1. At least part of the inner wall surface of the groove 3 is a concave arc wall surface 31, and the arc wall surface 31 is at least formed on the substrate 1.

[0037] Specifically, as shown in Figures 1 - 6 , the thickness direction of the substrate 1 is consistent with the up-down direction. The substrate 1 includes a first end surface 211 and a second end surface 212 that are oppositely arranged in the up-down direction. The bridge 21 is disposed on the first end surface 211 of the substrate 1 and protrudes upward from the substrate 1 relative to the substrate 1. The bridge 21 extends in the left-right direction. The first end 211 of the bridge 21 is connected to the left side of the substrate 1, and the second end 212 of the bridge 21 is connected to the right side of the substrate 1. That is to say, the connection between the bridge 21 and the substrate 1 includes a first connection 51 between the first end 211 of the bridge 21 and the left side of the substrate 1 and a second connection 52 between the second end 212 of the bridge 21 and the right side of the substrate 1. The groove 3 provided at the first connection 51 and / or the second connection 52 includes that the groove 3 is provided at the first connection 51, or the groove 3 is provided at the second connection 52, or the grooves 3 are provided at both the first connection 51 and the second connection 52. The number of the grooves 3 can be set to one, two, three or four. The setting positions of the grooves 3 are at least one of the front side of the first connection 51, the front side of the second connection 52, the rear side of the first connection 51, and the rear side of the second connection 52.

[0038] The groove 3 penetrates through the connection between the substrate 1 and the bridge piece 21 in the up and down directions. The inner wall surface of the groove 3 includes the inner wall surface formed on the substrate 1 that encloses the groove 3 and the inner wall surface formed on the bridge piece 21 that encloses the groove 3. The inner wall surface formed on the substrate 1 includes an inwardly concave arc-shaped wall surface 31. The inwardly concave arc-shaped wall surface 31 means that the arc-shaped wall surface 31 bulges in the direction away from the bridge piece 21. For the groove 3 provided at the first connection 51, the bulging direction of the inwardly concave arc-shaped wall surface 31 faces left. For the groove 3 provided at the second connection 52, the bulge of the inwardly concave arc-shaped wall surface 31 faces right.

[0039] When the groove 3 is provided at the first connection 51, the setting position of the groove 3 is: the groove 3 is provided on the front side of the first connection 51, or, the groove 3 is provided on the rear side of the first connection 51, or, the groove 3 is provided on both the front side and the rear side of the first connection 51.

[0040] When the groove 3 is provided at the second connection 52, the setting position of the groove 3 is: the groove 3 is provided on the front side of the second connection 52, or, the groove 3 is provided on the rear side of the second connection 52, or, the groove 3 is provided on both the front side and the rear side of the second connection 52.

[0041] When the groove 3 is provided at both the first connection 51 and the second connection 52, the number of the grooves 3 is set to two or three or four. When the number of the grooves 3 is two, the setting positions of the grooves 3 are: the groove 3 is provided on both the front side of the first connection 51 and the front side of the second connection 52, or, the groove 3 is provided on both the rear side of the first connection 51 and the rear side of the second connection 52, or, the groove 3 is provided on the front side of the first connection 51 and the rear side of the second connection 52, or, the groove 3 is provided on the rear side of the first connection 51 and the front side of the second connection 52. When the number of the grooves 3 is three, the setting positions of the grooves 3 are: the groove 3 is provided on both the front side and the rear side of the first connection 51 and the front side of the second connection 52, or, the groove 3 is provided on both the front side and the rear side of the first connection 51 and the rear side of the second connection 52, or, the groove 3 is provided on the front side of the first connection 51 and both the front side and the rear side of the second connection 52, or, the groove 3 is provided on the rear side of the first connection 51 and both the front side and the rear side of the second connection 52. When the number of the grooves 3 is four, the groove 3 is provided on both the front side and the rear side of the first connection 51 and both the front side and the rear side of the second connection 52.

[0042] For example, the first end 211 surface is the upper end surface of the substrate 1, and the second end 212 surface is the lower end surface of the substrate 1.

[0043] It should be noted that the air flow direction is generally along the width direction of the substrate 1, that is, the front-back direction. After simulating the drainage process of different fins, it is found that water is likely to accumulate at the bridging opening of the bridging piece 21 at the air inlet. That is to say, liquid water is prone to accumulate at the four edges of the connection between the bridging piece 21 and the substrate 1. The liquid water accumulated on the fins will occupy the flow space, increase the flow resistance, and further increase the pressure drop on the air side, resulting in a serious attenuation of the air volume.

[0044] In an embodiment of the present disclosure, a groove 3 is provided on at least one of the front side and the rear side of the connection between the bridging piece 21 and the substrate 1. The groove 3 penetrates the connection between the substrate 1 and the bridging piece 21 in the up-down direction, so that the inner wall surface formed on the substrate 1 surrounding the groove 3 and the inner wall surface formed on the bridging piece 21 surrounding the groove 3 are connected to form the inner wall surface of the groove 3. At least part of the inner wall surface formed on the substrate 1 is set as an inwardly concave arc-shaped wall surface 31, so that the edges at the connection between the substrate 1 and the bridging piece 21 are separated from each other. Moreover, the setting of the inwardly concave arc-shaped wall surface 31 destroys the three-dimensional space angle formed at the connection between the substrate 1 and the bridging piece 21, increases the difficulty of condensate adhesion, effectively avoids the accumulation of condensate at the connection between the substrate 1 and the bridging piece 21, and improves the drainage performance of the fins.

[0045] In some embodiments, the groove 3 includes a first recess 32 and a second recess 33 that communicate with each other. The first recess 32 is formed on the substrate 1, and at least part of the inner wall surface of the first recess 32 is an inwardly concave first arc surface 321. The second recess 33 is formed on the bridging piece 21, and at least part of the inner wall surface of the second recess 33 is an inwardly concave second arc surface 331. The first arc surface 321 and the second arc surface 331 are connected to form the arc-shaped wall surface 31.

[0046] Specifically, as Figures 5 - 7 shown, the first recess 32 penetrates the substrate 1 in the up-down direction. For the first recess 32 provided at the first connection 51, the inwardly concave first arc surface 321 means that the convex direction of the first arc surface 321 is towards the left side of the substrate. For the first recess 32 provided at the second connection 52, the inwardly concave first arc surface 321 means that the convex direction of the first arc surface 321 is towards the right side of the substrate. The second recess 33 penetrates the bridging piece 21 in the up-down direction. For the second recess 33 provided at the front side of the connection between the bridging piece 21 and the substrate 1, the inwardly concave second arc surface 331 means that the convex direction of the second arc surface 331 is towards the rear side. For the second recess 33 provided at the rear side of the connection between the bridging piece 21 and the substrate 1, the inwardly concave second arc surface 331 means that the convex direction of the second arc surface 331 is towards the front side.

[0047] It can be understood that the arc-shaped wall surface 31 is the first arc surface 321, or the arc-shaped wall surface 31 is an arc surface formed by connecting the first arc surface 321 and the second arc surface 331.

[0048] In this embodiment, through the arrangement of the first arc surface 321 of the first recess 32 and the second arc surface 331 of the second recess 33, the size of the groove 3 is increased, making it difficult for condensed water to adhere to the inside of the groove 3 and improving the drainage performance of the fin.

[0049] In some embodiments, the inner wall surface of the first recess 32 includes a first wall surface 322 and a first arc surface 321, the inner wall surface of the second recess 33 includes a second wall surface 332 and a second arc surface 331, and the first wall surface 322, the first arc surface 321, the second arc surface 331, and the second wall surface 332 are sequentially connected to enclose the inner wall surface of the groove 3.

[0050] Specifically, as Figures 5 - 7 shown, the first wall surface 322 extends in the left-right direction, the first wall surface 322 is flush with one side of the bridge piece 21 in its width direction, and one end of the first wall surface 322 far from the bridge piece 21 in the left-right direction is connected to one end of the first arc surface 321, so that one end of the first arc surface 321 is flush with one side of the bridge piece 21 in its width direction. Furthermore, the extending direction of the first arc surface 321 is inwardly extended in the width direction of the bridge piece 21, reducing the connection area at the connection between the bridge piece 21 and the substrate 1 while destroying the three-dimensional angle formed between the bridge piece 21 and the substrate 1, increasing the adhesion difficulty of the condensed water, and thus improving the drainage performance.

[0051] For example, the first arc surface 321 and the second arc surface 331 can be directly connected, or the first arc surface 321 and the second arc surface 331 can also be connected through a third wall surface to achieve the connection mode of the first arc surface 321, the third wall surface, and the second arc surface 331.

[0052] In some embodiments, the first wall surface 322 is parallel to the length direction and the thickness direction of the substrate 1. In the projection plane orthogonal to the thickness direction of the substrate 1, an angle β is formed between the first wall surface 322 and the second wall surface 332, and 0° < β < 90°.

[0053] As Figure 10 shown, in this embodiment, by limiting the angle between the first wall surface 322 and the second wall surface 332, it is avoided that the size of the groove 3 formed on the bridge piece 21 is too large, affecting the connection stability between the bridge piece 21 and the substrate 1.

[0054] For example, the value of β is 10°, 20°, 30°, 45°, 55°, 60°, 80°, 85°.

[0055] In some embodiments, the length of the line connecting the two ends of the arc-shaped wall surface 31 in its extending direction is A, the dimension of the bridge piece 21 in the width direction of the substrate 1 is B, and 0.1B ≤ A < 0.5B.

[0056] It should be noted that when the arc-shaped wall surface 31 is the first arc-shaped surface 321, the central angle of the arc-shaped wall surface 31 is the central angle of the first arc-shaped surface 321, and the length of the line connecting the two ends of the arc-shaped wall surface 31 in its extending direction is the length of the line connecting the two ends of the first arc-shaped surface in its extending direction.

[0057] When the arc-shaped wall surface 31 is an arc-shaped surface formed by connecting the first arc-shaped surface 321 and the second arc-shaped surface 331, if the first arc-shaped surface 321 and the second arc-shaped surface 331 are concentrically arranged, then the central angle of the arc-shaped wall surface 31 is the central angle of the arc-shaped surface formed by connecting the first arc-shaped surface 321 and the second arc-shaped surface 331, and the length of the line connecting the two ends of the arc-shaped wall surface 31 in its extending direction is the length of the line connecting the two ends of the arc-shaped surface formed by connecting the first arc-shaped surface 321 and the second arc-shaped surface 331 in its extending direction. If the first arc-shaped surface 321 and the second arc-shaped surface 331 are not concentrically arranged, then the central angle of the arc-shaped wall surface 31 is the central angle of the first arc-shaped surface 321, and the length of the line connecting the two ends of the arc-shaped wall surface 31 in its extending direction is the length of the line connecting the two ends of the first arc-shaped surface in its extending direction. In this embodiment, the arc-shaped wall surface 31 is an arc-shaped surface formed by connecting the first arc-shaped surface 321 and the second arc-shaped surface 331, and the first arc-shaped surface 321 and the second arc-shaped surface 331 are not concentrically arranged.

[0058] Specifically, as Figure 8 and Figure 9 shown, the length of the line connecting the front end and the rear end of the arc-shaped wall surface 31 in its extending direction is A, and the width of the bridge piece 21 is B. In this embodiment, by limiting the extending dimension of the arc-shaped wall surface 31, while ensuring the connection stability between the bridge piece 21 and the substrate 1, the dimension of the arc-shaped wall surface 31 is made large enough, so that it is difficult for condensed water to adhere to the arc-shaped wall surface 31.

[0059] In some embodiments, the radius of the arc-shaped wall surface 31 is greater than the critical nucleation radius, where the critical nucleation radius refers to the minimum radius at which a droplet exists and begins to grow on the fin.

[0060] Specifically, the critical nucleation radius refers to the minimum radius at which a droplet stably exists and begins to grow on the fin in the environment where the fin is located. In this embodiment, by limiting the radius of the arc-shaped wall surface 31 to be greater than the critical nucleation radius, it is difficult for condensed water nucleation to adhere and form, preventing the accumulation of condensed water at the connection between the substrate 1 and the bridge piece 21 and improving the drainage performance.

[0061] In some embodiments, the central angle of the arc-shaped wall surface 31 is α, where 90° ≤ α < 360°.

[0062] As Figure 9 shown, in this embodiment, the minimum angle of the central angle of the arc-shaped wall surface 31 is limited to 90° so that the arc-shaped wall surface 31 of the groove 3 provided can adapt to the bridge pieces 21 with different bridge-lifting angles. It can be understood that the smaller the bridge-lifting angle of the bridge piece 21, the larger the central angle of the arc-shaped wall surface 31 accordingly; the larger the bridge-lifting angle of the bridge piece 21, the smaller the central angle of the arc-shaped wall surface 31. By limiting the minimum angle of the central angle of the arc-shaped wall surface 31, the groove 3 has a sufficiently large space to avoid the accumulation of condensed water in the groove 3.

[0063] For example, the value of α is 90°, 100°, 150°, 180°, 200°, 240°, 300°.

[0064] In some embodiments, the bridge piece 21 includes a first connection segment 213, a body 214, and a second connection segment 215 that are sequentially connected along its length direction. One end of the first connection segment 213 far from the body 214 is connected to the substrate 1, and one end of the second connection segment 215 far from the body 214 is connected to the substrate 1. The groove 3 is provided at the connection between the first connection segment 213 and the substrate 1 and at the connection between the second connection segment 215 and the substrate 1.

[0065] Specifically, as Figure 3 and Figure 5 shown, the first connection segment 213 and the second connection segment 215 are arranged at intervals in the left-right direction. Both the first connection segment 213 and the second connection segment 215 extend in the up-down direction and the left-right direction. The lower left end of the first connection segment 213 is connected to the substrate, the upper right end of the first connection segment 213 is connected to the left end of the body 214, the lower right end of the second connection segment 215 is connected to the substrate, and the upper left end of the second connection segment 215 is connected to the right end of the body 214. The connection between the body 214 and the substrate 1 is realized through the first connection segment 213 and the second connection segment 215, and the groove 3 is provided at the connection between the connection segment and the substrate 1 to break the water-hanging area between the connection segment and the substrate 1, so as to form an arc transition between the substrate 1 and the connection segment, eliminate the water-hanging area, effectively eliminate the water-hanging phenomenon, and enhance the drainage performance.

[0066] For example, a channel 6 penetrating the substrate 1 in the up-down direction is provided on the substrate 1. The channel 6 is arranged corresponding to the bridge piece 21 in the up-down direction, and the channel 6 is communicated with the groove 3.

[0067] In some embodiments, the extending direction of the first connection segment 213 forms an angle with the length direction of the substrate 1, the extending direction of the second connection segment 215 forms an angle with the length direction of the substrate 1, and the extending direction of the body 214 is parallel to the extending direction of the substrate 1.

[0068] Specifically, as Figure 3 and Figure 5 shown, the spacing distance between the upper ends of the first connecting section 213 and the second connecting section 215 is smaller than the spacing distance between the lower ends of the first connecting section 213 and the second connecting section 215, which is convenient for the stamping forming of the bridge piece 21 and the fin, with simple results and convenient processing.

[0069] It can be understood that the angles between the first connecting section 213 and the substrate 1 and between the second connecting section 215 and the substrate 1 are less than 90 degrees. When stamping the bridge piece 21 on the substrate 1, if the angle is greater than or equal to 90 degrees, the connection between the bridge piece 21 and the substrate 1 will break.

[0070] For example, the included angle between the first connecting section 213 and the substrate 1 is the same as the included angle between the second connecting section 215 and the substrate 1, or the included angle between the first connecting section 213 and the substrate 1 is different from the included angle between the second connecting section 215 and the substrate 1.

[0071] In some embodiments, there are cutouts 4 between the two sides of the bridge piece 21 in its width direction and the substrate 1.

[0072] Specifically, as Figure 3 shown, the bridge piece 21 protrudes upward from the substrate 1 in the up - down direction relative to the substrate 1. The first end 211 and the second end 212 of the bridge piece 21 are respectively connected to the substrate 1, so that cutouts 4 are formed between the front side and the rear side of the bridge piece 21 and the substrate 1, increasing the disturbance of the air flow by the fins, thereby increasing the heat transfer on the air side and improving the heat transfer efficiency of the fins.

[0073] In some embodiments, the surface of at least one of the substrate 1 and the bridge piece 21 is coated with a hydrophilic layer.

[0074] In this embodiment, by coating the hydrophilic layer on the surfaces of the substrate and the bridge piece, due to the attraction of the hydrophilic layer to water molecules, the flow rate of water on the surface of the hydrophilic layer will be faster, enhancing the excretion of condensed water, improving the drainage performance, reducing the pressure drop on the air side, and further reducing the attenuation of the air volume of the air flow passing through the fins, thus increasing the air volume.

[0075] In some embodiments, the bridge piece assembly 2 includes multiple groups of bridge pieces arranged at intervals in the length direction of the substrate 1, and each group of bridge pieces includes at least two bridge pieces 21 arranged at intervals in the width direction of the substrate 1.

[0076] Specifically, as Figure 1 and Figure 2 shown, the multiple groups of bridge piece assemblies 2 are arranged at intervals in the left - right direction. The setting of each group of bridge pieces including multiple bridge pieces 21 can increase the heat transfer area of each group of bridge pieces, and further increase the heat transfer area of the multiple groups of bridge pieces to increase the contact area with the air flow, strengthen the air flow disturbance, and improve the heat transfer performance.

[0077] In some embodiments, a plurality of through holes 11 are formed in the substrate 1 and penetrate the substrate 1 in the thickness direction of the substrate 1. The plurality of through holes 11 are arranged at intervals in the extending direction of the substrate 1. The bridge plate assembly 2 is disposed at least on one side of the through holes 11 in the extending direction of the substrate 1.

[0078] Specifically, the through holes 11 penetrate the substrate 1 in the up and down direction, and the plurality of through holes 11 are arranged at intervals in the left and right direction. The arrangement of the plurality of through holes 11 facilitates the installation of the fins on the heat exchange tubes. The bridge plate assembly 2 can be disposed on the left side or the right side of the through holes 11, or can be disposed on both the left side and the right side of the through holes 11. In this embodiment, the bridge plate assembly 2 is disposed on both the left side and the right side of the through holes 11, increasing the heat exchange area of the fins.

[0079] For example, the number of bridge plates in each group is two, three, four, five, six, or seven.

[0080] The heat exchanger of the embodiment of the present disclosure includes fins and heat exchange tubes. The fins are the fins of the above embodiment. The fins are sleeved on the heat exchange tubes, and the number of the heat exchange tubes is multiple. The multiple heat exchange tubes are arranged in one-to-one correspondence with the through holes 11 of the fins.

[0081] Specifically, the heat exchange tubes extend in the up and down direction, and the multiple heat exchange tubes are arranged at intervals in the left and right direction. The multiple heat exchange tubes are arranged in one-to-one correspondence with the multiple through holes 11 on the fins, improving the installation efficiency of the fins and the heat exchange tubes.

[0082] For the heat exchanger of this embodiment, since the fins of the above embodiment are adopted, the drainage efficiency can be improved, the water storage amount of the heat exchanger can be reduced, a smooth air flow channel can be maintained, thereby reducing the air flow resistance and thermal resistance, reducing the pressure drop on the air side, and improving the heat exchange efficiency while reducing the air volume attenuation.

[0083] The air conditioner of the embodiment of the present disclosure includes the heat exchanger of the above embodiment.

[0084] For the air conditioner of this embodiment, since the heat exchanger of the above embodiment is adopted, the heat exchange efficiency is improved, and thus the performance of the air conditioner is improved.

[0085] In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present disclosure.

[0086] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0087] In the present disclosure, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0088] In the present disclosure, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0089] In the present disclosure, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0090] It can be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A fin, characterized in that: include: substrate; A bridge plate assembly, the bridge plate assembly comprising at least one bridge plate, the bridge plate being arranged on the substrate and protruding from the substrate in the thickness direction of the substrate, the bridge plate having a first end and a second end arranged opposite to each other in the length direction thereof, a groove being provided at the connection between the first end of the bridge plate and / or the second end of the bridge plate and the substrate, the groove being located on at least one side of the bridge plate in the width direction of the bridge plate, the groove penetrating the substrate and the bridge plate along the thickness direction of the substrate, at least a portion of the inner wall surface of the groove being an inwardly concave arcuate wall surface, and the arcuate wall surface being at least formed on the substrate.

2. The fin according to claim 1, characterized in that: The groove includes a first recess and a second recess connected to each other, the first recess is formed on the substrate, at least a portion of an inner wall surface of the first recess is a first inwardly concave arc surface, the second recess is formed on the bridge sheet, at least a portion of an inner wall surface of the second recess is a second inwardly concave arc surface, and the first arc surface and the second arc surface are connected to form the arc wall surface.

3. The fin according to claim 2, characterized in that: The inner wall surface of the first recess includes a first wall surface and the first arcuate surface, the inner wall surface of the second recess includes a second wall surface and the second arcuate surface, and the first wall surface, the first arcuate surface, the second arcuate surface and the second wall surface are sequentially connected to form the inner wall surface of the groove.

4. The fin according to claim 3, characterized in that: The first wall surface is parallel to the length direction and the thickness direction of the substrate. In a projection plane orthogonal to the thickness direction of the substrate, an angle β is formed between the first wall surface and the second wall surface, and 0°<β<90° is satisfied.

5. The fin according to claim 1, characterized in that: The length of the line between the two ends of the arc-shaped wall in the extension direction is A, the dimension of the bridge piece in the width direction of the substrate is B, 0.1B≤A<0.5B; and / or, The radius of the arc-shaped wall surface is greater than the critical nucleation radius, wherein the critical nucleation radius refers to the minimum radius at which a droplet exists on the fin and starts to grow; and / or, The central angle of the arc-shaped wall surface is α, 90°≤α<360°.

6. The fin according to claim 1, characterized in that: The bridge piece includes a first connecting section, a main body and a second connecting section connected in sequence along its length direction, the first connecting section is connected to the substrate at one end away from the main body, the second connecting section is connected to the substrate at one end away from the main body, and the groove is provided at the connection between the first connecting section and the substrate and at the connection between the second connecting section and the substrate.

7. The fin according to claim 6, characterized in that: The extension direction of the first connecting section forms an angle with the length direction of the substrate, the extension direction of the second connecting section forms an angle with the length direction of the substrate, and the extension direction of the main body is parallel to the extension direction of the substrate.

8. The fin according to any one of claims 1 to 7, characterized in that: The bridge sheet has cutouts between the base sheet and both sides of the bridge sheet in the width direction; and / or, The surface of at least one of the base sheet and the bridge sheet is coated with a hydrophilic layer; and / or, The bridge sheet assembly comprises a plurality of groups of bridge sheets arranged at intervals in the length direction of the substrate, each group of bridge sheets comprises at least two bridge sheets arranged at intervals in the width direction of the substrate; and / or, The substrate is provided with a plurality of tube holes penetrating the substrate along the thickness direction of the substrate, the plurality of tube holes are arranged at intervals in the extension direction of the substrate, and the bridge plate assembly is arranged at least on one side of the tube holes in the extension direction of the substrate.

9. A heat exchanger, characterized in that: include: A fin, wherein the fin is the fin described in any one of claims 1 to 8; The heat exchange tube is sleeved on the fin, and there are multiple heat exchange tubes, which are arranged in one-to-one correspondence with the tube holes of the fin.

10. An air conditioner, characterized in that: Comprising the heat exchanger as claimed in claim 9.

Images