Heat exchange fin and air conditioner

Abstract

The application relates to the technical field of air conditioners, in particular to a heat exchange fin and an air conditioner. The heat exchange fin comprises a fin body, a bridge structure and a fin pitch positioning structure. The fin body is provided with at least one pipe hole, the pipe hole is used for penetrating a heat exchange pipe, and the fin body has opposite first and second surfaces. The bridge structure is arranged on the fin body and is arranged staggeredly with the pipe hole, and the bridge structure is arched on the second surface in the direction of the first surface pointing to the second surface. The fin pitch positioning structure is arranged staggeredly with the pipe hole and the bridge structure, the fin pitch positioning structure is higher than the end surface of the pipe hole in the axial direction of the pipe hole, and the fin pitch positioning structure can abut against the adjacent heat exchange fin to limit the interval of the two adjacent heat exchange fins in the axial direction of the pipe hole. The heat exchange fin provided by the application can reduce the total thermal resistance of the heat exchanger, thereby improving the heat exchange efficiency of the heat exchanger.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a heat exchange fin and an air conditioner. Background Technology

[0002] Finned tube heat exchangers have become a core component of air conditioner heat exchange systems due to their mature manufacturing process and strong adaptability. Their heat exchange performance directly determines the energy efficiency level and operating cost of the air conditioner. In the assembly process of finned tube heat exchangers, the heat exchange fins are usually fitted with heat exchange tubes through flanged holes, and the two are interference-fitted by means of tube expansion technology.

[0003] However, the total thermal resistance of a heat exchanger consists of multiple components, including contact thermal resistance, air-side thermal resistance, and fluid-side thermal resistance. Among these, the air-side thermal resistance accounts for approximately 80%, making it a core bottleneck restricting the improvement of heat exchange performance. In related technologies, a plate spacing positioning structure is set at the flanged hole, which increases the contact area between the plate and the heat exchange tube, thereby increasing the total thermal resistance of the heat exchanger and affecting its heat exchange efficiency. Utility Model Content

[0004] This application discloses a heat exchange fin and an air conditioner, which can reduce the total thermal resistance of the heat exchanger, thereby improving the heat exchange efficiency of the heat exchanger.

[0005] To achieve the above objectives, in a first aspect, this application discloses a heat exchange fin, comprising: A fin body, wherein at least one tube hole is provided on the fin body for inserting a heat exchange tube, and the fin body has a first surface and a second surface opposite to each other. A bridge structure is disposed on the fin body and offset from the tube hole. The bridge structure arches above the second surface in the direction from the first surface to the second surface. The bridge structure is higher than the end face of the tube hole in the axial direction, so that the bridge structure can abut against the adjacent heat exchange fins to limit the distance between the two adjacent heat exchange fins in the axial direction of the tube hole.

[0006] In related technologies, the contact area between the heat exchange tube and the air side is reduced by setting the fin spacing positioning structure at the end of the tube hole, thereby increasing the total thermal resistance. However, in this embodiment, since the bridge structure is staggered from the tube hole, the bridge structure is higher than the end face of the tube hole in the axial direction, so that the bridge structure can abut against the adjacent heat exchange fins to limit the distance between the two adjacent heat exchange fins in the axial direction of the tube hole. Therefore, there is no additional increase in the contact area with the heat exchange tube due to limiting the distance between the two adjacent heat exchange fins, avoiding the problem of increased thermal resistance caused by increased contact area, which helps to reduce contact thermal resistance and thus improve the heat exchange efficiency of the heat exchanger.

[0007] In some possible implementations, the bridge structure includes a first bridge structure and a second bridge structure spaced apart, in a direction from the first surface to the second surface, wherein the first bridge structure is higher than the second bridge structure, and the first bridge structure is capable of abutting against adjacent heat exchange fins to limit the spacing between two adjacent heat exchange fins in the axial direction of the tube hole.

[0008] Because the first and second bridge fin structures are spaced apart, with the first bridge fin structure being higher than the second, this staggered arrangement increases the stability of the heat exchange fins. During heat exchanger operation, the fins may be affected by airflow impacts and vibrations; the presence of the first and second bridge fin structures provides better support and restraint, reducing fin deformation and displacement and ensuring the structural reliability of the heat exchanger. Furthermore, the first bridge fin structure improves heat exchange efficiency while maintaining the spacing between adjacent fins, eliminating the need for additional fin spacing positioning structures and simplifying the fin design.

[0009] This application also discloses a heat exchange fin, comprising: A fin body, wherein at least one tube hole is provided on the fin body for inserting a heat exchange tube, and the fin body has a first surface and a second surface opposite to each other. A bridge structure is disposed on the fin body and offset from the tube hole, and the bridge structure arches on the second surface in the direction from the first surface to the second surface; The fin spacing positioning structure is offset from both the tube hole and the bridge plate structure. The fin spacing positioning structure is higher than the end face of the tube hole in the axial direction. The fin spacing positioning structure can abut against adjacent heat exchange fins to limit the distance between two adjacent heat exchange fins in the axial direction of the tube hole.

[0010] Because the plate spacing positioning structure is staggered from the tube hole and bridge plate structure, and the plate spacing positioning structure is higher than the end face of the tube hole in the axial direction, the contact between the plate spacing positioning structure and the heat exchange tube is avoided, and a larger contact area is retained on the air side of the heat exchange tube. This directly reduces the air side thermal resistance, thereby significantly reducing the total thermal resistance of the heat exchanger and improving the core heat exchange efficiency.

[0011] In some possible implementations, the bridge structure includes a first bridge structure and a second bridge structure, the first bridge structure and the second bridge structure being spaced apart along the width direction of the fin body, and the fin spacing positioning structure being located between the first bridge structure and the second bridge structure.

[0012] Because the first and second bridge fin structures are spaced apart along the width of the fin body, and the fin spacing positioning structure is located between the first and second bridge fin structures, the first and second bridge fin structures distributed along the width of the fin body can disperse the force on the fin body, preventing deformation of the fin body due to vibration or airflow impact caused by a single first or second bridge fin structure. The centrally located fin spacing positioning structure can directly contact adjacent heat exchange fins, and the first and second bridge fin structures can assist in limiting the position, thereby reducing the offset of the positioning point and ensuring that the heat exchange fin spacing remains consistent in the width direction, avoiding heat exchange deviation caused by uneven spacing between the edge and center.

[0013] In addition, the first and second bridge plate structures create "lateral turbulence" in the width direction, which can evenly guide the airflow to the middle of the fin body. The centrally located fin spacing structure can further refine the airflow, break the local boundary layer, and prevent the airflow from accumulating in the middle. This makes the airflow velocity more uniform in the entire width direction, without obvious "dead zone areas," allowing the air to fully contact the surface of the fin body, reducing the increase in local thermal resistance caused by uneven airflow, and improving the overall heat exchange efficiency.

[0014] In some possible implementations, the fin body has a slit portion, which is cut and bent to form the fin spacing positioning structure.

[0015] Compared to the traditional method of "making the fin spacing positioning structure separately and then assembling it onto the fin body", this embodiment directly processes the fin spacing positioning structure on the gap. On the one hand, it reduces the number of molds and production steps and improves processing efficiency. On the other hand, it avoids precision errors in the assembly process, thus reducing the overall production cost in terms of both material and labor costs.

[0016] In addition, the fin spacing positioning structure is formed by cutting and bending the slit part of the fin body directly. It is connected to the fin body in an "integral" manner, rather than an "assembled" structure. The structural strength and stability are significantly improved. Therefore, it avoids the loosening or falling off problems caused by long-term vibration and temperature changes in traditional assembled structures, and can maintain the precise positioning of the heat exchange fin spacing for a long time.

[0017] In some possible implementations, the chip spacing positioning structure includes: A boss portion, which is connected to the fin body and protrudes from the second surface; A sheet spacing support portion, which is connected to the boss portion and extends in a direction perpendicular to the second surface; The fin support portion is connected to the fin spacing support portion and extends in a direction that forms an angle with the extending direction of the fin spacing support portion. The fin support portion and the boss portion are located on the same side of the fin spacing support portion.

[0018] Since the boss protrudes from the second surface of the fin body, it provides a stable foundation for the fin spacing support and the fin support. The fin spacing support extends perpendicular to the second surface, which can accurately limit the spacing between two adjacent heat exchange fins in the tube hole axial direction, ensuring that the distance between the heat exchange fins is uniform and consistent, which is conducive to smooth air flow, reduces airflow resistance and the generation of local eddies, thereby improving heat exchange efficiency.

[0019] In addition, since the fin support and the fin spacing support extend at an angle and are located on the same side as the boss, when the fin support in the fin spacing positioning structure comes into contact with the adjacent heat exchange fin, a stable triangular support structure can be formed. Since triangles are stable, they can effectively enhance the positioning stability of the fin body in the tube hole axis, prevent the fin body from shifting or deforming when subjected to airflow impact or other external forces, and ensure the overall structural stability of the heat exchanger.

[0020] Furthermore, the dimensions and angles of the fin spacing support and the fin support can be flexibly adjusted according to different application requirements, thereby enabling the fin spacing positioning structure to be applicable to heat exchange fins of different specifications and types, improving its versatility and adaptability.

[0021] In some possible implementations, the height of the boss portion is H1 along the direction perpendicular to the second surface, the height of the sheet spacing support portion is H2, the length of the boss portion is L1 along the direction parallel to the second surface, the length of the slit portion is L, the length of the sheet spacing support portion is L2 along the extending direction of the sheet spacing support portion, and 0.9(H1+H2+L1+L2)≤L≤(H1+H2+L1+L2).

[0022] Therefore, 0.9(H1+H2+L1+L2)≤L≤(H1+H2+L1+L2) can ensure the positioning of the spacing between two adjacent heat exchange fins by the fin spacing positioning structure, while avoiding the generation of more waste material and improving the heat dissipation effect of the fin body.

[0023] In some possible implementations, 0.2mm≤H1≤0.3mm, 0.5mm≤L1≤0.8mm, and / or, (H1-0.5mm)≤L1≤(H1-0.1mm).

[0024] Therefore, the height of the boss is between 0.2mm and 0.3mm. This ensures that the boss provides a stable foundation for the fin support while avoiding excessive heat exchange resistance due to an overly high boss.

[0025] The length of the boss portion is between 0.5mm and 0.8mm. This ensures the support strength between the fin support portion and the boss portion of the adjacent heat exchange fins, improves the consistency of the spacing between two adjacent heat exchange fins, reduces the heat exchange air resistance of the heat exchange fins, and improves the heat exchange effect of the heat exchange fins.

[0026] This ensures that (H1-0.5mm)≤L1≤(H1-0.1mm), which improves both the positioning between two adjacent heat exchange fins and the assembly efficiency of the heat exchange fins.

[0027] In some possible implementations, the fin body is further provided with a flanged portion corresponding to the tube hole, the flanged portion surrounding the outer periphery of the tube hole and protruding from the second surface, the flanged portion being configured to have an interference fit with the heat exchange tube.

[0028] Because the flanged part surrounds the outer periphery of the tube hole and is interference-fitted with the heat exchange tube, it can eliminate the tiny gap between the fin body and the heat exchange tube, prevent air from forming a heat insulation layer in the gap, greatly reduce the contact thermal resistance, and allow the heat of the heat exchange tube to be transferred to the fin body more efficiently.

[0029] Furthermore, the flanged portion increases the contact area between the fin body and the heat exchange tube. Compared with the flat contact without flanges, the increased contact area further reduces the heat flux density per unit area, enhances the heat transfer efficiency, and ultimately improves the heat exchange performance of the heat exchange fins.

[0030] In addition, since the flanged part surrounds the outer periphery of the tube hole and protrudes from the second surface, on the one hand, it can prevent the fin body from being scratched by the burrs at the end of the heat exchange tube when it is inserted into the tube hole. On the other hand, it enhances the deformation resistance around the tube hole and reduces the stress concentration of the fin body. Furthermore, the flanged part protruding from the second surface can, to a certain extent, help guide the airflow, reduce the eddy currents of the airflow around the tube hole, reduce the airflow resistance, and indirectly help improve the air-side heat exchange efficiency.

[0031] Secondly, this application also provides an air conditioner including the heat exchange fins described in any of the first aspects.

[0032] Because the air conditioner uses the heat exchange fins mentioned in the first aspect, the cooling or heating effect of the air conditioner can be improved.

[0033] Compared with the prior art, the beneficial effects of this application are as follows: In related technologies, the contact area between the heat exchange tube and the air side is reduced by setting the fin spacing positioning structure at the end of the tube hole, thereby increasing the total thermal resistance. However, in this embodiment, since the bridge structure is staggered from the tube hole, the bridge structure is higher than the end face of the tube hole in the axial direction, so that the bridge structure can abut against the adjacent heat exchange fins to limit the distance between the two adjacent heat exchange fins in the axial direction of the tube hole. Therefore, there is no additional increase in the contact area with the heat exchange tube due to limiting the distance between the two adjacent heat exchange fins, avoiding the problem of increased thermal resistance caused by increased contact area, which helps to reduce contact thermal resistance and thus improve the heat exchange efficiency of the heat exchanger. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments 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.

[0035] Figure 1 This is a schematic diagram of the structure of a heat exchange fin provided in an embodiment of this application; Figure 2 yes Figure 1 Sectional view at point AA; Figure 3 This is a schematic diagram of the structure of heat exchange fins in related technologies; Figure 4 yes Figure 1 Top view in the middle; Figure 5 This is a schematic diagram of another heat exchange fin structure provided in an embodiment of this application; Figure 6 yes Figure 5 Sectional view at point BB; Figure 7 yes Figure 5 Top view in the middle; Figure 8 yes Figure 5 Sectional view at CC; Figure 9 yes Figure 5 A magnified view of a portion of point D in the middle; Figure 10 This is a structural schematic diagram of an air conditioner provided in an embodiment of this application.

[0036] Explanation of reference numerals in the attached figures: 100-Heat exchange fins; 110 - Fin body; 111 - Pipe hole; 112 - Slit; 113 - Flanged part; 110a - First surface; 110b - Second surface; 120 - Bridge structure; 121 - First bridge structure; 122 - Second bridge structure; 130 - Fin spacing positioning structure; 131 - Boss part; 132 - Fin spacing support part; 133 - Fin support part; 200-Air conditioner. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0039] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0040] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0041] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0042] The technical solution of this application will be further described below with reference to specific embodiments and accompanying drawings.

[0043] Example 1: See Figure 1 and Figure 2 This application provides a heat exchange fin 100, which includes a fin body 110 and a bridge structure 120. The fin body 110 has at least one pipe hole 111 for passing through a heat exchange tube. The fin body has a first surface 110a and a second surface 110b. The bridge structure 120 is disposed on the fin body 110 and is offset from the pipe hole 111. The bridge structure 120 arches above the second surface 110b in the direction from the first surface 110a to the second surface 110b. The bridge structure 120 is higher than the end face of the pipe hole 111 in the axial direction of the pipe hole 111, so that the bridge structure 120 can abut against the adjacent heat exchange fin 100 to limit the distance between two adjacent heat exchange fins 100 in the axial direction of the pipe hole 111.

[0044] The heat exchange fins 100 are the main structure of the heat exchanger. The heat exchange fins 100 in the heat exchanger include multiple heat exchange fins 100, which are arranged sequentially at intervals along a certain direction. The heat exchanger also includes heat exchange tubes, at least a portion of which are inserted through the multiple heat exchange fins 100 and in contact with the heat exchange fins 100 to transfer heat / cold energy in the heat exchange tubes to the heat exchange fins 100.

[0045] For example, the fin body 110 is provided with two tube holes 111, which are spaced apart along the length of the fin body 110. The wall of each tube hole 111 can be in close contact with the outer peripheral wall of the heat exchange tube through a thermal expansion process.

[0046] The first surface 110a and the second surface 110b are arranged opposite each other along the thickness direction of the fin body 110, which is the thickness direction of the fin body 110. Figure 1 The direction indicated by the Z arrow is the axial direction of the tube hole 111. The length direction of the fin body 110 is the direction indicated by the Y arrow, and the width direction of the fin body 110 is the direction indicated by the X arrow.

[0047] Since the bridge structure 120 arches above the second surface 110b in the direction from the first surface 110a to the second surface 110b, the bridge structure 120 can turbulentize the airflow, thereby breaking the boundary layer when the air flows on the first surface 110a and / or the second surface 110b of the fin body 110, increasing the turbulence of the air, making the heat exchange between the air and the first surface 110a and / or the second surface 110b of the fin body 110 more complete, reducing the thermal resistance on the air side, and improving the heat exchange performance.

[0048] In addition, see related technologies. Figure 3Because the fin spacing positioning structure 130 is located at the end of the tube hole 111, the contact area between the heat exchange tube and the air side is reduced, thereby increasing the total thermal resistance. In this embodiment, since the bridge structure 120 is staggered from the tube hole 111, the bridge structure 120 is higher than the end face of the tube hole 111 in the axial direction, so that the bridge structure 120 can abut against the adjacent heat exchange fins 100 to limit the distance between the two adjacent heat exchange fins 100 in the axial direction of the tube hole 111. Therefore, there is no additional increase in the contact area with the heat exchange tube due to limiting the distance between the two adjacent heat exchange fins 100, which avoids the problem of increased thermal resistance caused by increased contact area, helps to reduce contact thermal resistance, and thus improves the heat exchange efficiency of the heat exchanger.

[0049] It should be noted that the bridge structure 120 can be a single bridge structure or a double bridge structure, and the bridge structure 120 can be a structure formed by cutting and bending on the fin body 110, or a protruding structure formed by stamping.

[0050] For example, the bridge structure 120 of the fin body 110 of one heat exchange fin 100 abuts against the bridge structure 120 of the fin body 110 of another heat exchange fin 100 to define the spacing between the two adjacent heat exchange fins 100, that is, the second surfaces 110b of the two adjacent heat exchange fins 100 are arranged facing each other.

[0051] In some possible embodiments, see Figure 4 The bridge structure 120 includes a first bridge structure 121 and a second bridge structure 122 spaced apart. Along the direction from the first surface 110a to the second surface 110b, the first bridge structure 121 is higher than the second bridge structure 122. The first bridge structure 121 can abut against the adjacent heat exchange fins 100 to limit the distance between the two adjacent heat exchange fins 100 in the axial direction of the tube hole 111.

[0052] Since the first bridge structure 121 and the second bridge structure 122 are arranged alternately, and the first bridge structure 121 is higher than the second bridge structure 122, this staggered arrangement of the first bridge structure 121 and the second bridge structure 122 can increase the stability of the heat exchange fins 100. That is, during the operation of the heat exchanger, the fin body 110 may be affected by factors such as the impact force of airflow and vibration. The presence of the first bridge structure 121 and the second bridge structure 122 can provide better support and restraint, reduce the deformation and displacement of the fin body 110, and ensure the structural reliability of the heat exchanger. On the other hand, the first bridge structure 121 can improve the heat exchange efficiency of the heat exchange fins 100 while maintaining the spacing between two adjacent heat exchange fins 100, eliminating the need for an additional fin spacing positioning structure 130, thereby simplifying the structural design of the heat exchange fins 100.

[0053] Example 2: See Figure 5 and Figure 6 This application provides a heat exchange fin 100, which includes a fin body 110, a bridge structure 120, and a fin spacing positioning structure 130. The fin body 110 has at least one pipe hole 111 for passing through a heat exchange tube. The fin body has a first surface 110a and a second surface 110b. The bridge structure 120 is disposed on the fin body 110 and is offset from the pipe hole 111. The bridge structure 120 arches on the second surface 110b in the direction from the first surface 110a to the second surface 110b. The fin spacing positioning structure 130 is offset from both the pipe hole 111 and the bridge structure 120. The fin spacing positioning structure 130 is higher than the end face of the pipe hole 111 in the axial direction of the pipe hole 111. The fin spacing positioning structure 130 can abut against adjacent heat exchange fins 100 to limit the spacing between two adjacent heat exchange fins 100 in the axial direction of the pipe hole 111.

[0054] Since the plate spacing positioning structure 130 is staggered from the tube hole 111 and the bridge plate structure 120, and the plate spacing positioning structure 130 is higher than the end face of the tube hole 111 in the axial direction, the contact between the plate spacing positioning structure 130 and the heat exchange tube is avoided, and a larger contact area on the air side of the heat exchange tube is retained, thereby directly reducing the air side thermal resistance, and thus significantly reducing the total thermal resistance of the heat exchanger and improving the core heat exchange efficiency.

[0055] In addition, the bridge structure 120 arches over the second surface 110b of the fin. Although it does not directly participate in the spacing positioning, it can generate turbulence on the air flowing over the first surface 110a and / or the second surface 110b of the fin body 110. This can disrupt the boundary layer of the airflow, increase the turbulence of the airflow, and allow the air to exchange heat more fully with the first surface 110a and / or the second surface 110b, further helping to reduce the thermal resistance on the air side.

[0056] Furthermore, the completely staggered arrangement of the fin spacing positioning structure 130, the bridge structure 120, and the tube hole 111 allows for smoother airflow channels on the first surface 110a and / or the second surface 110b of the fin body 110. At the same time, the turbulence effect of the bridge structure 120 can also drive the airflow to flush the first surface 110a and / or the second surface 110b of the fin body 110, further delaying dust accumulation and ensuring long-term efficient operation of the heat exchanger.

[0057] In some possible embodiments, see Figure 7The bridge structure 120 includes a first bridge structure 121 and a second bridge structure 122. The first bridge structure 121 and the second bridge structure 122 are spaced apart along the width direction of the fin body 110. The fin spacing positioning structure 130 is located between the first bridge structure 121 and the second bridge structure 122.

[0058] Since the first bridge structure 121 and the second bridge structure 122 are spaced apart along the width direction of the fin body 110, and the fin spacing positioning structure 130 is located between the first bridge structure 121 and the second bridge structure 122, the first bridge structure 121 and the second bridge structure 122 distributed along the width direction of the fin body 110 can disperse the force on the fin body 110, avoiding deformation of the fin body 110 due to vibration or airflow impact caused by a single first bridge structure 121 or second bridge structure 122. The centrally located fin spacing positioning structure 130 can directly abut against adjacent heat exchange fins 100, and the first bridge structure 121 and the second bridge structure 122 can assist in limiting the position, thereby reducing the offset of the positioning point and ensuring that the spacing between the heat exchange fins 100 remains consistent in the width direction, avoiding heat exchange deviation caused by uneven spacing between the edge and the center.

[0059] In addition, the first bridge structure 121 and the second bridge structure 122 form "lateral turbulence" in the width direction, which can guide the airflow evenly to the middle of the fin body 110. The centrally located fin spacing positioning structure 130 can further refine the airflow, break the local boundary layer, and prevent the airflow from accumulating in the middle, thereby making the airflow velocity more uniform in the entire width direction, without obvious "dead zone areas", allowing the air to fully contact the surface of the fin body 110, reducing the increase in local thermal resistance caused by uneven airflow, and improving the overall heat exchange efficiency.

[0060] In some possible embodiments, see Figure 5 and Figure 9 The fin body 110 has a slit portion 112, which is cut and bent to form a fin spacing positioning structure 130.

[0061] Compared to the traditional method of "separately fabricating the fin spacing positioning structure 130 and then assembling it onto the fin body 110", this embodiment directly processes the fin spacing positioning structure 130 on the slit portion 112. On the one hand, it reduces the number of molds and production steps, and improves processing efficiency. On the other hand, it avoids precision errors during the assembly process, thereby reducing the overall production cost in terms of both material and labor costs.

[0062] In addition, the fin spacing positioning structure 130 is formed by cutting and bending the slit portion 112 of the fin body 110. It is connected to the fin body 110 in an "integral" manner rather than an "assembled" structure. The structural strength and stability are significantly improved. Therefore, it avoids the loosening or falling off problems caused by long-term vibration and temperature changes in traditional assembled structures, and can maintain the precise positioning of the heat exchange fin spacing 100 for a long time.

[0063] In some possible embodiments, see Figure 9 The fin spacing positioning structure 130 includes a boss portion 131, a fin spacing support portion 132, and a fin support portion 133. The boss portion 131 is connected to the fin body 110 and protrudes from the second surface 110b. The fin spacing support portion 132 is connected to the boss portion 131 and extends in a direction perpendicular to the second surface 110b. The fin support portion 133 is connected to the fin spacing support portion 132 and extends in a direction at an angle to the extending direction of the fin spacing support portion 132. The fin support portion 133 and the boss portion 131 are located on the same side of the fin spacing support portion 132.

[0064] Since the boss portion 131 protrudes from the second surface 110b of the fin body 110, it provides a stable foundation for the fin spacing support portion 132 and the fin support portion 133. The fin spacing support portion 132 extends perpendicular to the second surface 110b, which can accurately define the spacing between two adjacent heat exchange fins 100 in the axial direction of the tube hole 111, ensuring that the distance between the heat exchange fins 100 is uniform and consistent, which is conducive to smooth airflow, reduces airflow resistance and the generation of local eddies, thereby improving heat exchange efficiency.

[0065] In addition, since the fin support portion 133 and the fin spacing support portion 132 extend at an angle and are located on the same side as the boss portion 131, when the fin support portion 133 in the fin spacing positioning structure 130 abuts against the adjacent heat exchange fin 100, a stable triangular support structure can be formed. Since the triangle has stability, it can effectively enhance the positioning stability of the fin body 110 in the axial direction of the tube hole 111, and prevent the fin body 110 from shifting or deforming when subjected to airflow impact or other external forces, thus ensuring the overall structural stability of the heat exchanger.

[0066] Furthermore, the dimensions and angles of the fin support 132 and the fin support 133 can be flexibly adjusted according to different application requirements, thereby enabling the fin positioning structure 130 to be applicable to heat exchange fins 100 of different specifications and types, thus improving its versatility and adaptability.

[0067] Optionally, the width of the fin spacing positioning structure 130 is W, where 1.0mm ≤ W ≤ 1.5mm. If W < 1.0mm, the strength of the entire fin spacing positioning structure 130 will be too low, and it will be unable to support the distance between two adjacent heat exchange fins 100. If W > 1.5mm, the fin spacing positioning structure 130 will be too wide, resulting in excessive wind resistance of the heat exchange fins 100.

[0068] In some possible embodiments, see Figure 9 The thickness direction of the fin body 110 is perpendicular to the second surface 110b. The height of the boss portion 131 is H1, and the height of the fin spacing support portion 132 is H2. The length of the boss portion 131 is L1, and the length of the slit portion 112 is L, along the extension direction of the fin spacing support portion 132. 0.9H1+H2+L1+L2≤L≤H1+H2+L1+L2.

[0069] If L < 0.9H1+H2+L1+L2, the length of the cut material is insufficient. Although the cutting gap 112 can be used to appropriately extend the cutting fin spacing positioning structure through the stretching process, it is still insufficient for the forming of the boss 131, the fin spacing support 132, and the fin support 133. If L > H1+H2+L1+L2, the cut material will be too long, resulting in more waste and wasting the heat exchange area. Therefore, 0.9H1+H2+L1+L2 ≤ L ≤ H1+H2+L1+L2 ensures that the fin spacing positioning structure positions the distance between two adjacent heat exchange fins 100, avoids generating more waste, and improves the heat dissipation effect of the fin body 110.

[0070] In some possible embodiments, 0.2mm≤H1≤0.3mm, 0.5mm≤L1≤0.8mm, and / or, H1-0.5mm≤L1≤H1-0.1mm.

[0071] If the height of the boss portion 131 is less than 0.2mm, the proportion of the boss portion 131 will be too small, thus failing to form the structure of the boss portion 131. If the height of the boss portion 131 is greater than 0.3mm, the proportion of the boss portion 131 will be too large, resulting in a large heat exchange resistance of the heat exchanger, which is not conducive to improving the heat exchange effect of the heat exchange fins 100. Therefore, the height of the boss portion 131 is between 0.2mm and 0.3mm. This ensures that the boss portion 131 is set to provide a stable foundation for the fin support portion 132, while also avoiding the boss portion 131 being too high, which would result in a large heat exchange resistance of the heat exchange fins 100.

[0072] For example, the height of the boss portion 131 can be 0.2mm, 0.21mm, 0.22mm, 0.23mm, 0.24mm, 0.25mm, 0.26mm, 0.27mm, 0.28mm, 0.29mm, 0.3mm, etc.

[0073] If the length of the boss portion 131 is less than 0.5 mm, it indicates that the contact area between the boss portion 131 and the fin support portion 133 of the adjacent heat exchange fin 100 is small, resulting in insufficient support force. This affects the positioning of the spacing between the two adjacent heat exchange fins 100 and may cause the two adjacent heat exchange fins 100 to misalign. If the length of the boss portion 131 is greater than 0.8 mm, it may cause excessive heat exchange resistance of the heat exchange fin 100. Therefore, the length of the boss portion 131 is between 0.5 mm and 0.8 mm. This ensures the support force between the fin support portion 133 and the boss portion 131 of the adjacent heat exchange fin 100, improves the consistency of the spacing positioning between the two adjacent heat exchange fins 100, reduces the heat exchange resistance of the heat exchange fin 100, and improves the heat exchange effect of the heat exchange fin 100.

[0074] For example, the length of the boss portion 131 can be 0.5mm, 0.52mm, 0.54mm, 0.55mm, 0.58mm, 0.6mm, 0.63mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, etc.

[0075] If L1 If H1-0.1mm is too small, the assembly space between the fin support 133 and the boss 131 will be too tight. During the assembly of the heat exchange fins 100, the boss 131 of the assembled heat exchange fins 100 may not be able to make smooth contact with the fin support 133 of the adjacent heat exchange fins 100, resulting in fin misalignment and reduced production efficiency. Therefore, H1-0.5mm≤L1≤H1-0.1mm is made so that the positioning between two adjacent heat exchange fins 100 can be improved, and the assembly efficiency of the heat exchange fins 100 can be improved.<h1>

[0076] In some possible embodiments, see Figure 8 The fin body 110 is also provided with a flange 113 corresponding to the tube hole 111. The flange 113 surrounds the outer periphery of the tube hole 111 and protrudes from the second surface 110b. The flange 113 is configured to have an interference fit with the heat exchange tube.

[0077] Since the flange 113 surrounds the outer periphery of the tube hole 111 and is interference-fitted with the heat exchange tube, it can eliminate the tiny gap between the fin body 110 and the heat exchange tube, prevent air from forming a heat insulation layer in the gap, greatly reduce the contact thermal resistance, and allow the heat of the heat exchange tube to be transferred to the fin body 110 more efficiently.

[0078] Furthermore, the flanged portion 113 increases the contact area between the fin body 110 and the heat exchange tube. Compared with the flat contact without flanges, the increased contact area further reduces the heat flux density per unit area, enhances the heat transfer efficiency, and ultimately improves the heat exchange performance of the heat exchange fin 100.

[0079] In addition, since the flange 113 surrounds the outer periphery of the tube hole 111 and protrudes from the second surface 110b, on the one hand, it can prevent the burrs at the end of the heat exchange tube from scratching the fin body 110 when the heat exchange tube passes through the tube hole 111. On the other hand, it enhances the deformation resistance around the tube hole 111 and reduces the stress concentration of the fin body 110. Furthermore, the flange 113 protruding from the second surface 110b can, to a certain extent, help guide the airflow, reduce the eddies of the airflow around the tube hole 111, reduce the airflow resistance, and indirectly help improve the air-side heat exchange efficiency.

[0080] Optionally, the diameter of the tube hole 111 is between 4mm and 8mm.

[0081] See Figure 10 This application also provides an air conditioner 200, which includes the heat exchange fins 100 in the above embodiments.

[0082] Among them, air conditioner 200 can be a wall-mounted air conditioner, a floor-standing air conditioner, etc.

[0083] Since the air conditioner 200 uses the heat exchange fins 100 in the above embodiment, the cooling or heating effect of the air conditioner 200 can be improved.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A heat exchange fin (100), characterized in that, include: The fin body (110) has at least one tube hole (111) for inserting a heat exchange tube, and the fin body has a first surface (110a) and a second surface (110b) opposite to each other. A bridge structure (120) is disposed on the fin body (110) and offset from the tube hole (111). The bridge structure (120) arches on the second surface (110b) in the direction from the first surface (110a) to the second surface (110b). The bridge structure (120) is higher than the end face of the tube hole (111) in the axial direction, so that the bridge structure (120) can abut against the adjacent heat exchange fins (100) to limit the distance between the two adjacent heat exchange fins (100) in the axial direction of the tube hole (111).

2. The heat exchange fins (100) according to claim 1, characterized in that, The bridge structure (120) includes a first bridge structure (121) and a second bridge structure (122) spaced apart, pointing from the first surface (110a) to the second surface (110b). The first bridge structure (121) is higher than the second bridge structure (122). The first bridge structure (121) can abut against the adjacent heat exchange fins (100) to limit the axial spacing of the two adjacent heat exchange fins (100) in the tube hole (111).

3. A heat exchange fin (100), characterized in that, include: The fin body (110) has at least one tube hole (111) for inserting a heat exchange tube, and the fin body has a first surface (110a) and a second surface (110b) opposite to each other. Bridge structure (120), the bridge structure (120) is disposed on the fin body (110) and is offset from the tube hole (111), the bridge structure (120) arches on the second surface (110b) in the direction from the first surface (110a) to the second surface (110b). A fin spacing positioning structure (130) is provided, which is offset from the tube hole (111) and the bridge plate structure (120). The fin spacing positioning structure (130) is higher than the end face of the tube hole (111) in the axial direction. The fin spacing positioning structure (130) can abut against the adjacent heat exchange fins (100) to limit the spacing between two adjacent heat exchange fins (100) in the axial direction of the tube hole (111).

4. The heat exchange fins (100) according to claim 3, characterized in that, The bridge structure (120) includes a first bridge structure (121) and a second bridge structure (122). The first bridge structure (121) and the second bridge structure (122) are spaced apart along the width direction of the fin body (110). The fin spacing positioning structure (130) is located between the first bridge structure (121) and the second bridge structure (122).

5. The heat exchange fins (100) according to claim 3, characterized in that, The fin body (110) has a slit (112), which is cut and bent to form the fin spacing positioning structure (130).

6. The heat exchange fins (100) according to claim 5, characterized in that, The inter-piece positioning structure (130) includes: A boss (131) is connected to the fin body (110) and protrudes from the second surface (110b). A sheet spacing support (132) is connected to the boss (131) and extends in a direction perpendicular to the second surface (110b); The fin support portion (133) is connected to the fin spacing support portion (132) and extends in a direction that forms an angle with the extending direction of the fin spacing support portion (132). The fin support portion (133) and the boss portion (131) are located on the same side of the fin spacing support portion (132).

7. The heat exchange fins (100) according to claim 6, characterized in that, Along the direction perpendicular to the second surface (110b), the height of the boss portion (131) is H1, the height of the sheet spacing support portion (132) is H2, along the direction parallel to the second surface (110b), the length of the boss portion (131) is L1, the length of the slit portion (112) is L, along the extending direction of the sheet spacing support portion (132), the length of the sheet spacing support portion (132) is L2, and 0.9(H1+H2+L1+L2)≤L≤(H1+H2+L1+L2).

8. The heat exchange fins (100) according to claim 7, characterized in that, 0.2mm≤H1≤0.3mm, 0.5mm≤L1≤0.8mm, and / or, (H1-0.5mm)≤L1≤(H1-0.1mm).

9. The heat exchange fin (100) according to claim 1 or 3, characterized in that, The fin body (110) is also provided with a flange (113) corresponding to the tube hole (111). The flange (113) surrounds the outer periphery of the tube hole (111) and protrudes from the second surface (110b). The flange (113) is configured to be interference fit with the heat exchange tube.

10. An air conditioner (200), characterized in that, Includes the heat exchange fins (100) as described in any one of claims 1-9.

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