Fin, heat exchanger and air conditioner

Abstract

The utility model discloses a fin, a heat exchanger and an air conditioner. The fin comprises a base body and a concave-convex structure, and the base body is provided with a first edge and a second edge in the width direction of the base body. The concave-convex structure comprises a plurality of concave parts and a plurality of convex parts, the concave parts and the convex parts are alternately arranged on the first edge and / or the second edge in the length direction of the base body, the concave-convex structure is located on the air inlet side of the heat exchanger, and / or the concave-convex structure is located on the side away from the air inlet side of the heat exchanger. When a heat exchanger made of the fin is used, the concave-convex structure can disturb airflow flowing through the heat exchanger, wake vortex of the airflow flowing out of the heat exchanger is effectively reduced or eliminated, noise caused by breakage of the wake vortex is reduced, the effect of reducing the noise of an air conditioner adopting the heat exchanger is achieved, and the comfort of the air conditioner is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a fin, a heat exchanger and an air conditioner. Background Art

[0002] In the related art, the heat exchanger of the air conditioner is provided with fins, and the fins are used to increase the heat exchange area of ​​the heat exchanger. The existing heat exchanger with fins is only used to exchange heat, and has no noise reduction function. The airflow trail vortex passing through the heat exchanger is obvious, and when the trail vortex breaks, a certain amount of noise will be generated, thereby increasing the noise of the air conditioner and reducing the comfort of the air conditioner. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a fin to reduce or eliminate the wake vortex of the airflow coming out of the heat exchanger and reduce the noise caused by the rupture of the wake vortex.

[0004] The utility model also provides a heat exchanger and an air conditioner adopting the fin.

[0005] The fin according to the embodiment of the first aspect of the utility model is used for a heat exchanger, wherein the fin includes a base and a concave-convex structure, and along the width direction of the base, the base has a first side and a second side; the concave-convex structure includes a plurality of concave parts and a plurality of convex parts, and along the length direction of the base, the plurality of concave parts and the plurality of convex parts are alternately arranged on the first side and / or the second side, the concave-convex structure is located on the air inlet side of the heat exchanger, and / or the concave-convex structure is located on the side away from the air inlet side of the heat exchanger.

[0006] The fins according to the embodiments of the utility model have at least the following beneficial effects: when the heat exchanger made of the fins is in use, the concave-convex structure can disturb the airflow flowing through the heat exchanger, effectively reduce or eliminate the wake vortex of the airflow coming out of the heat exchanger, and reduce the noise caused by the rupture of the wake vortex, thereby reducing the noise of the air conditioner using the heat exchanger and improving the comfort of the air conditioner.

[0007] According to some embodiments of the present invention, the concave-convex structure configures the first side and / or the second side of the fin into a wave shape, a sawtooth shape, a square wave shape or a trapezoidal wave shape in which concave and convex parts are arranged alternately.

[0008] According to some embodiments of the present invention, two sides of the opening of the recess are respectively a first side and a second side, and an angle between the first side and the second side is B, wherein 45°≤B≤90°.

[0009] According to some embodiments of the present invention, the opening width of the recess is a, wherein 0.5 mm ≤ a ≤ 3 mm.

[0010] According to some embodiments of the present invention, along the width direction of the base, a vertical distance from the top end of the protrusion to the bottom end of the recess is h, wherein 0.5 mm ≤ h ≤ 3 mm.

[0011] According to some embodiments of the present invention, the minimum distance between two adjacent recesses is c, wherein 1 mm ≤ c ≤ 3 mm.

[0012] According to some embodiments of the present invention, the base body is provided with a slit structure, and the minimum vertical distance from the bottom end of the recess to the nearest slit position of the slit structure is L, wherein L≥1 mm.

[0013] According to some embodiments of the utility model, the substrate is a flat sheet structure or a corrugated sheet structure, the vertical distance from the bottom end of the recess to the edge of the through hole close to the recess is L1, and the radius of the through hole is r, wherein 1mm≤L1-r≤5mm.

[0014] The heat exchanger according to the second embodiment of the utility model comprises the fins and heat exchange tubes as described in any one of the above items, and the heat exchange tubes are inserted into the through holes of the base.

[0015] The heat exchanger according to the embodiment of the utility model has at least the following beneficial effects: when the heat exchanger is in use, the concave-convex structure on the fins can disturb the airflow flowing through the heat exchanger, effectively reduce or eliminate the wake vortex of the airflow coming out of the heat exchanger, and reduce the noise caused by the rupture of the wake vortex, thereby reducing the noise of the air conditioner using the heat exchanger and improving the comfort of the air conditioner.

[0016] An air conditioner according to an embodiment of the third aspect of the utility model includes a fan and the above-mentioned heat exchanger.

[0017] The air conditioner according to the embodiment of the utility model has at least the following beneficial effects: when the air conditioner is in use, the concave-convex structure on the fins can disturb the airflow flowing through the heat exchanger, effectively reduce or eliminate the wake vortex of the airflow coming out of the heat exchanger, and reduce the noise caused by the rupture of the wake vortex, thereby reducing the noise of the air conditioner using the heat exchanger and improving the comfort of the air conditioner.

[0018] According to some embodiments of the present utility model, the heat exchanger is arranged at the air inlet end of the fan, the first side of the fin is close to the air inlet end, and the concave-convex structure is at least arranged on the first side.

[0019] According to some embodiments of the present invention, the heat exchanger is disposed at the air outlet end of the fan, the second side of the fin is close to the air outlet end, and the concave-convex structure is at least disposed on the second side.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a schematic structural diagram of the fin of the first embodiment of the utility model;

[0023] Figure 2 This is a schematic structural diagram of the fin of the second embodiment of the utility model;

[0024] Figure 3 This is a schematic structural diagram of the fin of the third embodiment of the utility model;

[0025] Figure 4 This is a schematic structural diagram of the fin of the fourth embodiment of the utility model;

[0026] Figure 5 This is a schematic structural diagram of the fin of the fifth embodiment of the utility model;

[0027] Figure 6 This is a schematic structural diagram of the fin of the sixth embodiment of the utility model;

[0028] Figure 7 for Figure 1 A partial enlarged view of the middle A;

[0029] Figure 8 for Figure 4 Enlarged view of point C in the middle;

[0030] Fig. 9 A schematic diagram of the structure of a heat exchanger according to an embodiment of the utility model

[0031] Fig.10 This is a structural schematic diagram of an air conditioner according to an embodiment of the utility model;

[0032] Fig.11 A schematic structural diagram of an air conditioner according to another embodiment of the utility model;

[0033] Fig.12 This is a schematic diagram of the relationship between the concave-convex structure of the fin and the noise in one embodiment of the utility model;

[0034] Fig.13 The figure is a noise comparison diagram of an air conditioner according to an embodiment of the utility model and an air conditioner in the related art.

[0035] Figure Number:

[0036] Fin 100, substrate 101, concave-convex structure 102, concave portion 103, first side 104, second side 105, convex portion 106, through hole 107, first edge 108, second edge 109, slot structure 110;

[0037] Air conditioner 200 , body 201 , fan 202 , heat exchanger 203 , heat exchange tube 204 , air duct housing 205 , air duct 206 . DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the descriptions involving orientation, such as left, right, etc., the orientation or positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0040] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0041] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0042] In the related art, when air conditioning equipment such as an air conditioner is in use, the air flows through the heat exchanger under the power of the fan to heat or cool the air. The heat exchanger of the air conditioner is provided with fins, and the fins are used to increase the heat exchange area of ​​the heat exchanger. In the related art, the air flow through the heat exchanger has obvious wake vortices, and these wake vortices break during the air flow transmission process and generate certain noise, which increases the noise value of the air conditioning equipment and reduces the comfort of the air conditioner.

[0043] To this end, the utility model provides a fin 100, a heat exchanger 203 and an air conditioner 200. By improving the structure of the fin 100, the wake vortex of the air flow flowing out of the heat exchanger 203 is reduced or even eliminated, the noise caused by the rupture of the wake vortex is reduced, and the noise of the air conditioner 200 is reduced.

[0044] The fin 100, the heat exchanger 203 and the air conditioner 200 provided in the embodiment of the utility model are described in detail below with reference to the accompanying drawings.

[0045] The fin 100 proposed in the embodiment of the first aspect of the utility model is used for a heat exchanger 203, and the heat exchanger 203 is used in air conditioning equipment, such as an air conditioner 200. The heat or cold of the refrigerant medium flowing in the heat exchange tube 204 of the heat exchanger 203 is transferred to the fin 100 through the tube wall of the heat exchange tube 204, and heat is exchanged with the air through the fin 100, and the air with heat or cold is transported to the working environment through the fan 202.

[0046] Reference Figures 1 to 6 The fin 100 includes a substrate 101 and a concave-convex structure 102. The substrate 101 is provided with a plurality of through holes 107. The through holes 107 penetrate the substrate 101 along the thickness direction of the substrate 101. The through holes 107 are used for the heat exchange tubes 204 of the heat exchanger 203 to pass through. The heat exchange tubes 204 are interference fit with the through holes 107, so that the tube walls of the heat exchange tubes 204 are tightly fitted with the side walls of the through holes 107, so as to reduce the thermal resistance between the heat exchange tubes 204 and the fin 100, and improve the conduction rate of the cold or heat of the refrigerant medium in the heat exchange tubes 204. Along the width direction of the substrate 101, the substrate 101 has a first side 108 and a second side 109. The first side 108 and the second side 109 can be defined according to the usage scenario of the heat exchanger 203. With respect to the air conditioner 200, one side of the fin 100 located on the air outlet side of the heat exchanger 203 is defined as the first side 108, and one side of the fin 100 located on the air inlet side of the heat exchanger 203 is defined as the second side 109.

[0047] The concave-convex structure 102 includes a plurality of concave portions 103 and a plurality of convex portions 106. The plurality of concave portions 103 and the plurality of convex portions 106 of the concave-convex structure 102 can disturb the airflow flowing through the concave-convex structure 102, change the flow condition of the airflow flowing through the heat exchanger 203, increase the turbulence of the airflow flowing through the heat exchanger 203, and further reduce the wake vortex of the airflow coming out of the heat exchanger 203. The plurality of concave portions 103 and the plurality of convex portions 106 can be arranged on the first side 108 and / or the second side 109 of the fin 100, that is, the setting position of the concave-convex structure 102 can be adjusted according to the positional relationship between the fan 202 of the air conditioner 200 and the heat exchanger 203, or can be specifically arranged according to the wake vortex of the airflow flowing through the heat exchanger 203.

[0048] Specifically, Figure 1 , Figure 4As shown, along the length direction of the base, a plurality of recesses 103 and a plurality of protrusions 106 are alternately arranged on the first side 108 and the second side 109 of the fin 100. The heat exchanger 203 made of the above-mentioned fin 100 structure can improve the flow condition of the airflow flowing through the heat exchanger 203, maximize the elimination of the wake vortex of the airflow flowing out of the heat exchanger 203, thereby basically eliminating the noise caused by the rupture of the wake vortex, and minimize the noise generated when the airflow flows through the heat exchanger 203, thereby achieving the effect of reducing the noise of the air conditioner 200.

[0049] like Figure 2 , Figure 5 As shown, multiple recesses 103 and multiple protrusions 106 are alternately arranged on the first side 108 of the fin 100. The fin 100 adopting this arrangement is suitable for an air conditioner 200 in which the heat exchanger 203 is arranged at the air inlet end of the fan 202. In other words, multiple recesses 103 and multiple protrusions 106 are alternately arranged on the air outlet side of the heat exchanger 203.

[0050] like Figure 3 , Figure 6 As shown, multiple recesses 103 and multiple protrusions 106 are alternately arranged on the second side 109 of the fin 100. The fin 100 adopting this arrangement is suitable for an air conditioner 200 in which the heat exchanger 203 is arranged at the air outlet end of the fan 202. In other words, multiple recesses 103 and multiple protrusions 106 are alternately arranged on the air inlet side of the heat exchanger 203.

[0051] When the heat exchanger 203 made of the fin 100 of the above embodiment of the utility model is in use, the concave-convex structure 102 can improve the flow condition of the airflow flowing through the heat exchanger 203, disturb the airflow flowing through the heat exchanger 203, change the flow condition of the airflow flowing through the heat exchanger 203, increase the turbulence of the airflow flowing through the heat exchanger 203, and thus effectively reduce or eliminate the wake vortex of the airflow coming out of the heat exchanger 203, and reduce the noise caused by the rupture of the wake vortex, thereby reducing the noise of the air conditioner 200 using the heat exchanger 203 and improving the comfort of the air conditioner 200; and the concave-convex structure 102 can increase the turbulence of the airflow flowing through the heat exchanger 203, and thus can appropriately increase the wind resistance of the heat exchanger 203, thereby improving the heat exchange efficiency of the heat exchanger 203.

[0052] Reference Figures 1 to 8In some embodiments, the plurality of concave portions 103 and the plurality of convex portions 106 of the concave-convex structure 102 are alternately arranged in a zigzag shape, and the zigzag concave-convex structure 102 is arranged on the first side 108 of the fin 100, or the zigzag concave-convex structure 102 is arranged on the second side 109 of the fin 100, or the zigzag concave-convex structure 102 can also be arranged on the first side 108 and the second side 109 of the fin 100 at the same time. The characteristics can effectively improve the flow condition of the air flow passing through the heat exchanger 203, disturb the air flow passing through the heat exchanger 203, change the flow condition of the air flow passing through the heat exchanger 203, increase the turbulence of the air flow passing through the heat exchanger 203, and thus effectively reduce or eliminate the wake vortex of the air flow coming out of the heat exchanger 203, and reduce the noise caused by the rupture of the wake vortex, thereby playing the effect of reducing the noise of the air conditioner 200 using the heat exchanger 203 and improving the comfort of the air conditioner 200.

[0053] It can be understood that the multiple concave portions 103 and the multiple convex portions 106 of the concave-convex structure 102 can also be in the form of alternatingly arranged structures such as wavy, square or trapezoidal waves. In other words, as long as the uneven structures are alternately arranged on the first side 108 and / or the second side 109 of the fin 100, the purpose of effectively reducing or eliminating the wake vortex of the airflow coming out of the heat exchanger 203 and reducing the noise caused by the rupture of the wake vortex is achieved, it is within the scope of the present application.

[0054] Reference Figures 1 to 6 In the specific embodiment shown in the figure, the multiple concave parts 103 and multiple convex parts 106 of the concave-convex structure 102 are arranged alternately in a sawtooth shape. Experiments have shown that the size of the concave parts 103 and convex parts 106 of the sawtooth concave-convex structure 102 can affect the flow condition of the airflow flowing through the heat exchanger 203, thereby affecting the wake vortex of the airflow coming out of the heat exchanger 203, and affecting the noise caused by the rupture of the wake vortex. The shape and size parameters of the concave parts 103 and convex parts 106 of the concave-convex structure 102 include: the angle B between the first side 104 and the second side 105 of the concave part 103, the opening width a of the concave part 103, the vertical distance h from the top of the convex part 106 to the bottom of the concave part 103, and the distance c between two adjacent concave parts 103. The parameter settings of these structures can affect the noise reduction effect of the heat exchanger 203 using the fin 100.

[0055] Specifically, refer to Figure 7In some embodiments, the recess 103 has a first side 104 and a second side 105, the angle between the first side 104 and the second side 105 is B, wherein 45°≤B≤90°, the opening width a of the recess 103 is a, wherein 0.5mm≤a≤3mm, and along the width direction of the substrate, the vertical distance from the top of the protrusion 106 to the bottom of the recess 103 (i.e., the tooth height of the sawtooth structure) is h, wherein 0.5mm≤h≤3mm, and the distance between two adjacent recesses 103 is c, wherein 1mm≤c≤3mm. Experiments have shown that the heat exchanger 203 formed by assembling the fins 100 having the concave-convex structure 102 composed of the sawtooth-shaped concave portions 103 and convex portions 106 within the above-mentioned parameter range can effectively improve the flow condition of the airflow flowing through the heat exchanger 203, disturb the airflow flowing through the heat exchanger 203, change the flow condition of the airflow flowing through the heat exchanger 203, increase the turbulence of the airflow flowing through the heat exchanger 203, and thus effectively reduce or eliminate the wake vortex of the airflow coming out of the heat exchanger 203, reduce the noise caused by the rupture of the wake vortex, thereby reducing the noise of the air conditioner 200 using the heat exchanger 203 and improving the comfort of the air conditioner 200; and can increase the turbulence of the airflow flowing through the heat exchanger 203, and thus can appropriately increase the wind resistance of the heat exchanger 203, thereby improving the heat exchange efficiency of the heat exchanger 203.

[0056] The present application tests the noise of various heat exchangers 203, and the structural parameters of the fins 100 used in these heat exchangers 203 are different. Fig.12 When the angle B between the first side 104 and the second side 105 of the concave portion 103 of the fin 100 of the heat exchanger 203 is set to 60°, by changing the opening width a of the concave portion 103 of the fin 100, the noise data of the heat exchanger 203 with fins 100 of different opening widths a are collected, and the following is obtained: Fig.12 The curve shown. Fig.12 As shown, when the opening width a of the recessed portion 103 of the fin 100 is 1.5 mm, the noise of the heat exchanger 203 using the fin 100 with this opening width is lower than the noise of the heat exchanger 203 using the fin 100 with other opening widths.

[0057] The noise of the heat exchanger 203 using the fins 100 with different parameter combinations was tested. The results showed that the angle B between the first side 104 and the second side 105 of the recess 103 was 60°, the opening width a of the recess 103 was 1.5 mm, the vertical distance h from the top of the convex portion 106 to the bottom of the recess 103 was 1.5 mm, and the minimum distance c between two adjacent recesses 103 was 2 mm. The above structural parameters are the better structural parameters of the fin 100. The heat exchanger 203 formed by assembling the fin 100 with the concave-convex structure 102 composed of the sawtooth recess 103 and the convex portion 106 having the above structural parameters, It effectively improves the flow condition of the airflow flowing through the heat exchanger 203, disturbs the airflow flowing through the heat exchanger 203, changes the flow condition of the airflow flowing through the heat exchanger 203, increases the turbulence of the airflow flowing through the heat exchanger 203, and thus effectively reduces or eliminates the wake vortex of the airflow coming out of the heat exchanger 203, reduces the noise caused by the rupture of the wake vortex, thereby reducing the noise of the air conditioner 200 using the heat exchanger 203 and improving the comfort of the air conditioner 200; and can increase the turbulence of the airflow flowing through the heat exchanger 203, thereby being able to appropriately increase the wind resistance of the heat exchanger 203, thereby improving the heat exchange efficiency of the heat exchanger 203.

[0058] It is understandable that the fin 100 proposed in the present application can be a straight sheet structure, a corrugated sheet structure, or a fin 100 with a slotted structure. The heat exchanger 203 using the corrugated sheet structure fin 100 and the slotted structure fin 100 can improve the turbulence phenomenon when the airflow flows through the heat exchanger 203, increase the wind resistance of the heat exchanger 203, and improve the heat exchange efficiency of the heat exchanger 203.

[0059] It is understandable that the slotted structure 110 is a commonly used structure in the art and will not be described in detail herein.

[0060] Reference Figure 7 When the slotted fin 100 is used, that is, when the base 101 is provided with a slotted structure 110, the minimum vertical distance from the bottom end of the recess 103 to the nearest slot position of the slotted structure 110 is L, where L≥1mm. When L≥1mm, the structural strength of the fin 100 and the reliability of the slotted structure 110 can be ensured, so as to ensure the stability of the assembly of the fin 100 and the heat exchange tube 204.

[0061] In a specific embodiment, the minimum vertical distance L from the bottom end of the recess 103 to the nearest slit position of the slit structure 110 is set to 2 mm, which can not only ensure the structural strength of the fin 100 and the reliability of the slit structure 110, and ensure the stability of the assembly of the fin 100 and the heat exchange tube 204, but also make a better planar structure arrangement on the surface of the fin 100, thereby improving the structural performance of the fin 100.

[0062] Reference Figure 8 In this embodiment, the base 101 is a straight sheet structure or a corrugated sheet structure, that is, the fin 100 is a straight sheet structure fin or a corrugated sheet structure fin, the vertical distance from the bottom end of the recess 103 to the edge of the through hole 107 close to the recess 103 is L1, and the radius of the through hole 107 is r, wherein 1mm≤L1-r≤5mm, preferably, L1-r=2mm. When 1mm≤L1-r≤5mm, the structural strength of the side wall of the through hole 107 can be ensured, thereby ensuring the structural strength of the fin 100 and the stability of the assembly of the fin 100 and the heat exchange tube 204.

[0063] It should be noted that the “vertical distance from the bottom of the recess 103 to the edge of the through hole 107 close to the recess 103” referred to in this embodiment refers to the minimum vertical distance from the edge of the through hole 107 close to the recess 103 to the bottom of the recess 103 along the thickness direction of the substrate 101.

[0064] Reference Fig. 9 The heat exchanger 203 proposed in the embodiment of the second aspect of the utility model includes the fin 100 and the heat exchange tube 204 described in any of the above items. The heat exchange tube 204 is inserted into the through hole 107. The heat or cold of the refrigerant medium flowing in the heat exchange tube 204 is transferred to the fin 100 through the tube wall of the heat exchange tube 204, and heat is exchanged with the air through the fin 100, and the air with heat or cold is transported to the working environment through the fan 202.

[0065] When the heat exchanger 203 of the embodiment of the utility model is in use, the concave-convex structure 102 on the fin 100 can disturb the airflow flowing through the heat exchanger 203, effectively reduce or eliminate the wake vortex of the airflow coming out of the heat exchanger 203, and reduce the noise caused by the rupture of the wake vortex, thereby reducing the noise of the air conditioner 200 using the heat exchanger 203 and improving the user experience.

[0066] The air conditioner 200 provided in the embodiment of the third aspect of the present utility model comprises the above-mentioned heat exchanger 203 and fan 202. When the air conditioner 200 according to the embodiment of the present utility model is in use, the concave-convex structure 102 on the fin 100 can disturb the airflow flowing through the heat exchanger 203, effectively reduce or eliminate the wake vortex of the airflow coming out of the heat exchanger 203, and reduce the noise caused by the rupture of the wake vortex, thereby playing the effect of reducing the noise of the air conditioner 200 using the heat exchanger 203 and improving the user experience.

[0067] Reference Fig.10In some embodiments, the air conditioner 200 includes a body 201, in which an air duct housing 205, a fan 202 and a heat exchanger 203 are disposed, in which an air duct housing 205 is disposed an air duct 206, an air outlet of the fan 202 is connected to the air duct 206, and the heat exchanger 203 is disposed at the air inlet end of the fan 202. In other words, in this embodiment, the air duct 206 is an air suction type air duct, and for the air conditioner 200 of this structure, the first side 108 of the fin 100 is close to the air inlet end of the fan 202, and the concave-convex structure 102 is at least disposed on the first side 108 of the fin 100.

[0068] Reference Fig.11 In some embodiments, the air conditioner 200 includes a body 201, in which an air duct housing 205, a fan 202 and a heat exchanger 203 are disposed, in which an air duct housing 205 is disposed an air duct 206, an air outlet of the fan 202 is connected to the air duct 206, and the heat exchanger 203 is disposed at the air outlet end of the fan 202. In other words, in this embodiment, the air duct 206 is a blowing air duct, and for the air conditioner 200 of this structure, the second side 109 of the fin 100 is close to the air outlet end of the fan 202, and the concave-convex structure 102 is at least disposed on the second side 109 of the fin 100.

[0069] It can be understood that the concave-convex structure 102 can be set on the air inlet side of the heat exchanger 203, or on the air outlet side of the heat exchanger 203, or on both the air inlet side and the air outlet side of the heat exchanger 203. It can be specifically arranged according to the form of the air duct 206 of the air conditioner 200, and is not limited here.

[0070] The air conditioner 200 of the embodiment of the present application and the air conditioner 200 of the related art were tested for noise under the same conditions. The test results are shown in Tables 1 and Fig.13 The fin 100 used in the air conditioner 200 of the embodiment of the present application is a slotted structure fin 100, and a sawtooth concave-convex structure 102 is used. The concave-convex structure 102 is arranged on the first side 108 and the second side 109 of the fin 100. The specific structural parameters are as follows: the angle B between the first side 104 and the second side 105 of the recess 103 is 60°, the opening width a of the recess 103 is 1.5 mm, the vertical distance h from the top of the convex part 106 to the bottom of the recess 103 is 1.5 mm, the distance c between two adjacent recesses 103 is 2 mm, and the minimum vertical distance L from the bottom of the recess 103 to the nearest slot position of the slotted structure 110 is 2 mm.

[0071] Table 1

[0072]

[0073] As can be seen from the above table, the fin 100 used in the heat exchanger 203 of the air conditioner 200 of the present application is provided with a concave-convex structure 102 on the first side 108 and the second side 109, and the multiple concave portions 103 and the multiple convex portions 106 of the concave-convex structure 102 are alternately arranged, thereby effectively improving the flow condition of the airflow flowing through the heat exchanger 203, disturbing the airflow flowing through the heat exchanger 203, changing the flow condition of the airflow flowing through the heat exchanger 203, and increasing the turbulence of the airflow flowing through the heat exchanger 203, thereby effectively reducing or eliminating the wake vortex of the airflow coming out of the heat exchanger 203, reducing the noise caused by the rupture of the wake vortex, thereby playing the effect of reducing the noise of the air conditioner 200 using the heat exchanger 203. From Tables 1 and Fig.13 It can be seen that compared with the air conditioner of the related technology, the noise of the air conditioner 200 in the embodiment of the utility model is reduced by 1-2 decibels, which effectively improves the comfort of the air conditioner 200; and can increase the turbulence of the air flow passing through the heat exchanger 203, thereby being able to appropriately increase the wind resistance of the heat exchanger 203, thereby improving the heat exchange efficiency of the heat exchanger 203.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0075] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A fin for a heat exchanger, characterized in that: include: A substrate, wherein along a width direction of the substrate, the substrate has a first side and a second side; The concave-convex structure includes a plurality of concave portions and a plurality of convex portions. Along the length direction of the substrate, the plurality of concave portions and the plurality of convex portions are alternately arranged on the first side and / or the second side. The concave-convex structure is located on the air inlet side of the heat exchanger, and / or the concave-convex structure is located on the side away from the air inlet side of the heat exchanger.

2. The fin according to claim 1, characterized in that: The concave-convex structure configures the first side and / or the second side of the fin into a wave shape, a sawtooth shape, a square wave shape or a trapezoidal wave shape in which concave and convex are alternately arranged.

3. The fin according to claim 1, characterized in that: Two sides of the opening of the recess are respectively a first side and a second side, and an angle between the first side and the second side is B, wherein 45°≤B≤90°.

4. The fin according to claim 3, characterized in that: The opening width of the recess is a, wherein 0.5 mm ≤ a ≤ 3 mm.

5. The fin according to claim 3, characterized in that: Along the width direction of the substrate, a vertical distance from the top of the convex portion to the bottom of the concave portion is h, wherein 0.5 mm≤h≤3 mm.

6. The fin according to claim 3, 4 or 5, characterized in that: The minimum distance between two adjacent recesses is c, wherein 1 mm ≤ c ≤ 3 mm.

7. The fin according to claim 1, characterized in that: The base body is provided with a slotted structure, and the minimum vertical distance from the bottom end of the recess to the nearest slotted position of the slotted structure is L, wherein L≥1 mm.

8. The fin according to claim 1, characterized in that: The substrate is a flat sheet structure or a corrugated sheet structure, and is provided with a plurality of through holes. The vertical distance from the bottom end of the recess to the edge of the through hole close to the recess is L1, and the radius of the through hole is r, wherein 1mm≤L1-r≤5mm.

9. A heat exchanger, characterized in that: include: The fin according to any one of claims 1 to 8; A heat exchange tube is inserted into the through hole of the base.

10. An air conditioner, characterized in that: It comprises a fan and the heat exchanger as claimed in claim 9.

11. The air conditioner according to claim 10, characterized in that: The heat exchanger is arranged at the air inlet end of the fan, the first side of the fin is close to the air inlet end, and the concave-convex structure is arranged at least on the first side.

12. The air conditioner according to claim 10, characterized in that: The heat exchanger is arranged at the air outlet end of the fan, the second side of the fin is close to the air outlet end, and the concave-convex structure is arranged at least on the second side.

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