Fin of heat exchanger and heat exchanger

Abstract

The application provides a fin of a heat exchanger and the heat exchanger. The fin comprises a fin body, the fin body is provided with an edge region and a middle region arranged along a first direction; wherein the middle region is provided with a mounting hole for mounting a refrigerant pipe, the middle region is formed with a V-shaped flow guide groove, the edge region is formed with a first flow guide groove for guiding flow along a second direction, the first flow guide groove is communicated with the end of the V-shaped flow guide groove, and the opening between the two ends of the V-shaped flow guide groove faces the flow direction; wherein the region of the middle region without the V-shaped flow guide groove protrudes the edge region along the axial direction of the mounting hole to form the first flow guide groove, and the first direction, the second direction and the axial direction of the mounting hole are perpendicular to each other. The fin provided by the application can improve the drainage speed and improve the performance of the heat exchanger.

Description

Technical Field

[0001] The present application relates to the field of refrigeration technology, and in particular to a fin of a heat exchanger and a heat exchanger. Background Art

[0002] During heat pump system operation, the refrigerant temperature inside the indoor heat exchanger is high, dissipating heat indoors, while the refrigerant temperature inside the outdoor heat exchanger is low, absorbing heat from the outside. When the outdoor air is cold and humid, water vapor in the air tends to condense on the heat exchanger, forming condensate. If the heat exchanger temperature is below the freezing point of water, this condensate will further condense into frost or ice. Heat exchangers primarily exchange heat with the air through their fins. Failure to drain the liquid from the fins during the heat exchange process will accelerate frost formation. Failure to drain the liquid in a timely manner during defrosting will slow the defrosting process and affect heat exchanger performance. Summary of the Invention

[0003] In order to solve the above technical problems, the present application provides a fin of a heat exchanger and a heat exchanger to increase the water drainage speed of the fin and improve the performance of the heat exchanger.

[0004] A technical solution adopted in the present application is: to provide a fin of a heat exchanger, which includes a fin body, and the fin body is provided with an edge area and a middle area arranged along a first direction; wherein, the middle area is provided with a mounting hole for installing a refrigerant pipe, the middle area is formed with a V-shaped guide groove, and the edge area is formed with a first guide groove for guiding flow along a second direction, the first guide groove is connected to the end of the V-shaped guide groove, and the opening between the two ends of the V-shaped guide groove faces the guide direction; wherein, the area in the middle area where the V-shaped guide groove is not provided protrudes along the axial direction of the mounting hole to form a first guide groove, wherein the first direction, the second direction and the axial direction of the mounting hole are perpendicular to each other.

[0005] Among them, the edge area is a first flat portion arranged parallel to the axial vertical plane, the middle area is a second flat portion arranged parallel to the vertical plane, and the fin body is also provided with a first inclined portion connected between the first flat portion and the second flat portion, and the first inclined portion is arranged at an obtuse angle to the first flat portion and the second flat portion respectively.

[0006] In which, the bottom wall of the V-shaped guide groove and the bottom wall of the first guide groove are located in the same plane, and the height difference between the bottom wall of the first guide groove and the part of the middle area where the V-shaped guide groove is not set is greater than or equal to the height difference between the bottom wall of the V-shaped guide groove and the part of the middle area where the V-shaped guide groove is not set.

[0007] The side wall of the V-shaped guide groove is arranged at an obtuse angle to the second flat portion.

[0008] The middle area is further provided with a second guide groove extending along the first direction. The second guide groove is located on the side of the mounting hole along the first direction and is communicated with the first guide groove.

[0009] The middle area is further provided with an annular guide groove surrounding the circumference of the mounting hole, and the annular guide groove is connected with the second guide groove.

[0010] Among them, the V-shaped guide groove includes two intersecting and connected groove sections, and the intersection of the two groove sections is connected to an annular guide groove on the periphery of a mounting hole; along the second direction, the two groove sections extend away from one end of the intersection to the two side edges of the adjacent mounting holes.

[0011] Wherein, along the first direction, the distance between the outer side wall of one end and the side of the edge region facing away from the middle region is greater than the distance between the inner side wall of one end and the side of the edge region facing away from the middle region.

[0012] Wherein, a drainage structure for guiding flow along the second direction is provided in the edge region, and the drainage structure is arranged close to the edge of the fin body.

[0013] Wherein, along the second direction, edge areas on both sides of the mounting hole are provided with drainage structures.

[0014] The present application provides a heat exchanger, which includes the above-mentioned fins and a refrigerant tube, and the refrigerant tube is installed in the installation hole of the fin.

[0015] The beneficial effects of the present application are: the fin provided in the present application includes a fin body, and the fin body is provided with an edge area and a middle area arranged along a first direction; wherein, the middle area is provided with a mounting hole for installing a refrigerant pipe, a V-shaped guide groove is formed in the middle area, and a first guide groove is formed in the edge area for guiding along a second direction, the first guide groove is connected to the end of the V-shaped guide groove, and the opening between the two ends of the V-shaped guide groove faces the second direction; wherein, the area in the middle area where the V-shaped guide groove is not provided protrudes along the axial direction of the mounting hole to form a first guide groove; wherein the first direction, the second direction and the axial direction of the mounting hole are perpendicular to each other. The present invention provides a V-shaped guide groove and a first guide groove in the middle and edge regions of the fin body, respectively. The ends of the first guide groove and the V-shaped guide groove are connected. Liquid in the middle region of the fin body can be quickly drained to the edge region through the V-shaped guide groove, and condensed water in the edge region can be quickly drained out of the fin body through the first guide groove. The V-shaped guide groove can also reduce the amount of residual liquid in the middle region, thereby delaying the formation of frost on the fin body. Furthermore, compared to a flat fin body, the area of ​​the fin body in the middle region not provided with the V-shaped guide groove protrudes from the edge region axially along the mounting hole, thereby improving the heat exchange performance of the fin body. Therefore, the fin provided by the present invention can improve the heat exchange performance of a heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0017] Figure 1 This is a structural diagram of an embodiment of a heat exchanger provided by the present application;

[0018] Figure 2 This is a structural diagram of an embodiment of a fin body provided by the present application;

[0019] Figure 3 yes Figure 2 A schematic structural diagram of another view of the fin body of the embodiment;

[0020] Figure 4 yes Figure 2 A schematic structural diagram of another view of the fin body of the embodiment;

[0021] Figure 5 This is another structural schematic diagram of the fin body provided by this application;

[0022] Figure 6 yes Figure 5 A schematic structural diagram of another view of the fin body of the embodiment;

[0023] Figure 7 It is a structural schematic diagram of another embodiment of the fin body provided in this application. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0027] This application provides a heat exchanger 01, see Figure 1 , Figure 1 : is a structural schematic diagram of an embodiment of a heat exchanger provided in the present application, wherein the heat exchanger 01 includes a refrigerant tube 20 and a plurality of fins 10. The fins 10 are provided with mounting holes, and the refrigerant tubes 20 are mounted in the mounting holes. The refrigerant tubes 20 are in close contact with the fins 10, so that the temperature of the fins 10 is close to the temperature of the refrigerant tubes 20. The heat exchanger 01 includes an air inlet side and an air outlet side, and the airflow direction refers to the direction of the airflow from the air inlet side to the air outlet side. When the airflow flows from the air inlet side to the air outlet side, that is, when the airflow flows through the gaps between the fins 10, heat exchange with the fins 10 and the refrigerant tubes 20 is completed.

[0028] In one embodiment, the fin 10 includes a fin body. To clearly illustrate the structure of the fin body, the fin body is divided into an edge region, a middle region, and an edge region located on the other side of the middle region along the airflow direction. That is, along the airflow direction, the fin body is sequentially divided into an edge region, a middle region, and an edge region. The edge region near the air inlet side can be considered the windward region, while the edge region away from the air inlet side or near the air outlet side can be considered the leeward region.

[0029] See Figures 2 to 4 , Figure 2 This is a schematic structural diagram of an embodiment of the fin body provided in this application. Figure 3 yes Figure 2 A schematic structural diagram of another view of the fin body of the embodiment, Figure 4 yes Figure 2A schematic structural diagram of another view of the fin body of an embodiment shows a fin body 100 having an edge region, a middle region, and an edge region arranged along a first direction X. The middle region is provided with a mounting hole 120 for mounting the refrigerant tube 20, and a V-shaped guide groove 110 is formed in the middle region. The edge region is formed with a first guide groove for guiding flow along a second direction Y. The first guide groove communicates with the ends of the V-shaped guide groove 110, and the opening between the two ends of the V-shaped guide groove 110 faces the second direction Y. The area of ​​the middle region not provided with the V-shaped guide groove 110 protrudes from the edge region along the axial direction Z of the mounting hole 120 to form the first guide groove. The second direction Y, the first direction X, and the axial direction Z of the mounting hole 120 are perpendicular to each other.

[0030] It can be understood that along the second direction Y, the liquid slides from the apex of the V-shaped guide groove 110 to the two ends of the V-shaped guide groove 110. Among them, the liquid in the middle area can quickly enter the hydrophilic track formed by the V-shaped guide groove 110 through the capillary action of the V-shaped guide groove 110, achieving stable and invisible guidance. Therefore, the V-shaped guide groove 110 can accelerate the diversion of the liquid in the middle area to the first guide groove. Among them, the first direction X is parallel to the airflow direction.

[0031] The present application sets a V-shaped guide groove 110 and a first guide groove in the middle area and edge area of ​​the fin body 100 respectively, and the ends of the first guide groove and the V-shaped guide groove 110 are connected. The liquid in the middle area of ​​the fin body 100 can be quickly discharged to the edge area through the V-shaped guide groove 110, and the condensed water in the edge area can be quickly discharged from the fin body 100 through the first guide groove. At the same time, the V-shaped guide groove 110 can reduce the residual amount of liquid in the middle area, thereby improving the frosting situation of the fin body 100; in addition, compared with the flat fin body 100, the area of ​​the fin body 100 in the middle area where the V-shaped guide groove 110 is not set protrudes along the axial direction Z of the mounting hole 120, which can improve the heat exchange performance of the fin body 100; further, the V-shaped guide groove 110 and the first guide groove are in the same plane, which can effectively increase the heat exchange area and air disturbance, thereby further improving the heat exchange performance of the fin body 100. Therefore, the fin 10 provided in the present application can improve the heat exchange performance of the heat exchanger 01 .

[0032] For example, when the fins 10 are in use, the first direction X is parallel to the airflow direction; the second direction Y is parallel to the direction of gravity. During heat exchange between the fin body 100 and the airflow, condensed water formed on the fin body 100 and the refrigerant tube can be directed by the V-shaped guide grooves 110 in the middle region to the first guide grooves in the edge region, thereby accelerating the discharge of condensed water from the fin body 100 and reducing the amount of residual condensed water on the fin body 100, thereby delaying the formation of frost on the fin body 100 and improving the performance of the heat exchanger 01. During the defrosting period of the fin body 100, the V-shaped guide grooves 110 and the first guide grooves maximize the drainage of residual water from the surface of the fin body 100 at the end of the defrosting process, reducing the amount of water stored between the fins 10, preventing deterioration during the next frosting cycle, and thus improving the performance of the heat exchanger 01.

[0033] Optionally, the edge region comprises a first flat portion 131 disposed in a vertical plane parallel to the axial direction Z of the mounting hole 120, and the middle region comprises a second flat portion 132 disposed in parallel to the vertical plane. The fin body 100 further comprises a first inclined portion 133 connected between the first flat portion 131 and the second flat portion 132. The first inclined portion 133 is disposed at an obtuse angle to the first flat portion 131 and the second flat portion 132, respectively. It will be appreciated that in the axial direction Z of the mounting hole 120, the second flat portion 132 is higher than the first flat portion 131, and the angle formed between the second flat portion 132 and the first inclined portion 133 is an obtuse angle. Therefore, the first inclined portion 133 has a flow diversion function. The liquid on the second flat portion 132 can be guided to the first flat portion 131 through the first inclined portion 133, so that the liquid on the second flat portion 132 can be discharged from the fin body 100 through the first flat portion 131, accelerating the discharge of liquid in the middle area of ​​the fin body 100 and reducing the residual amount of liquid on the fin body 100, thereby delaying the time for frost formation on the fin body 100 or accelerating the defrosting speed of the fin body 100, thereby improving the heat exchange performance of the heat exchanger 01.

[0034] The flat portion may be a plane without any protrusions on the surface.

[0035] Optionally, the bottom wall 113 of the V-shaped guide groove and the bottom wall of the first guide groove (reference number 131) are located in the same plane, and the height difference between the bottom wall of the first guide groove and the portion of the middle area where the V-shaped guide groove is not set is greater than or equal to the height difference between the bottom wall 113 of the V-shaped guide groove and the portion of the middle area where the V-shaped guide groove is not set.

[0036] It can be understood that along the axial direction Z, the bottom wall of the first guide groove is lower than or equal to the bottom wall 113 of the V-shaped guide groove. Therefore, the success rate of the V-shaped guide groove 110 in diverting water to the first guide groove can be improved, and the amount of liquid residue can be reduced; in addition, the V-shaped guide groove and the first guide groove are in the same plane, which can effectively increase the heat exchange area and air disturbance, thereby improving the heat exchange performance of the fin body.

[0037] For example, along the axial direction Z, the bottom wall 113 of the V-shaped guide groove gradually descends from the bottom wall at the corresponding position at the top to its end until it is smoothly connected with the bottom wall of the first guide groove, so that the bottom wall 113 of the V-shaped guide groove can be smoothly connected with the bottom wall of the first guide groove. At the same time, there is a height difference between the bottom wall 113 of the V-shaped guide groove from the top to the end, so that the liquid can be accelerated to converge to the first guide groove, thereby improving the diversion speed of the liquid in the V-shaped guide groove.

[0038] Optionally, see Figures 5 and 6 , Figure 5 This is another structural diagram of the fin body provided in this application. Figure 6 yes Figure 5 A schematic structural diagram of another view of the fin body of the embodiment shows that the sidewall of the V-shaped guide groove 110 is arranged at an obtuse angle to the second flat portion 132. It is understandable that in the axial direction Z of the mounting hole 120, there is a height difference between the second flat portion 132 and the bottom wall of the V-shaped guide groove 110, and the sidewall of the V-shaped guide groove 110 is arranged at an obtuse angle to the second flat portion 132. Therefore, the sidewall of the V-shaped guide groove 110 has a diversion function, which can accelerate the speed at which liquid from the second flat portion 132 converges into the V-shaped guide groove 110, further accelerate the discharge of liquid from the middle area of ​​the fin body 100, and reduce the amount of residual liquid on the fin body 100, thereby delaying the time for frost to form on the fin body 100 or accelerating the defrosting speed of the fin body 100, thereby improving the heat exchange performance of the heat exchanger 01.

[0039] Optionally, the middle region is further provided with a second guide groove 140 extending along the first direction X. The second guide groove 140 is located on the side of the mounting hole 120 along the first direction X and is connected to the first guide groove. The second guide groove 140 of this embodiment can increase the flow area in the area around the mounting hole 120 where the surface temperature difference of the fin body 100 is large. Therefore, the resistance of the second guide groove 140 is reduced, and the air volume of the second guide groove 140 is increased, thereby enhancing the heat exchange efficiency of the fin body 100. In addition, the second guide groove 140 is also connected to the first guide groove, so that liquid in the position of the second guide groove 140 can be guided along the second direction Y through the first guide groove and discharged from the fin body 100. This can reduce the amount of residual liquid on the fin body 100, delay the frost formation time of the fins, or accelerate the defrosting process.

[0040] Optionally, the middle region is further provided with an annular guide groove 150 surrounding the mounting hole 120, and the annular guide groove 150 is connected to the second guide groove 140. The annular guide groove 150 of this embodiment is connected to the second guide groove 140. The annular guide groove 150 can collect condensed water formed around the mounting hole 120 and on the refrigerant pipe 20, and guide it to the first guide groove through the V-shaped guide groove or other guide grooves, thereby reducing the amount of liquid residue. In addition, the flow area of ​​the fin body 100 around the mounting hole 120 where the surface temperature difference is large is further increased, thereby reducing local resistance and increasing local air volume, thereby enhancing the heat exchange efficiency of the fin body 100 and further improving the heat exchange performance of the heat exchanger 01.

[0041] Optionally, the V-shaped guide groove 110 includes two intersecting and connected groove segments, the intersection of the two groove segments being connected to an annular guide groove 150 on the periphery of a mounting hole 120; along the second direction Y, the ends of the two groove segments, facing away from the intersection, extend to the two sides of the adjacent mounting hole 120. In this embodiment, the V-shaped guide groove 110 is connected to the annular guide groove 150. Liquid collected in the annular guide groove 150 on the periphery of the mounting hole 120 can be implicitly guided by the V-shaped guide groove 110 to the first guide groove in the edge region and then merged into the first guide groove, ultimately achieving rapid liquid discharge.

[0042] Optionally, the apex of the connection between the groove section of the V-shaped guide groove 110 and the annular guide groove 150 on the periphery of the mounting hole 120 forms an acute angle, which can avoid the problem of reduced guide speed caused by excessively large guide deflection angle (the angle formed by the guide groove and the first direction X).

[0043] Optionally, along the first direction X, the distance between the outer sidewall 111 of the V-shaped guide groove 110 at the end of the groove section facing away from the intersection and the side of the edge region facing away from the middle region is greater than the distance between the inner sidewall 112 of the V-shaped guide groove 110 at the end of the groove section facing away from the intersection and the side of the edge region facing away from the middle region. That is, the end of the inner sidewall 112 is closer to the side of the edge region facing away from the middle region, which ensures that the liquid guided by the V-shaped guide groove 110 successfully flows into the first guide groove, thereby preventing the liquid from accidentally entering the second guide groove 140 and causing a decrease in the liquid diversion speed.

[0044] Optionally, to increase the liquid drainage rate from the fin body 100, a drainage structure 160 is provided in the edge region of the fin body 100, directing flow in the second direction Y. This drainage structure 160 is positioned near the edge of the fin body 100. As will be appreciated, the windward region of the fin body 100 is exposed to airflow before the middle and leeward regions, and condensation forms first in the windward region of the fin body 100. By providing the drainage structure 160 in the windward region, directing flow in the second direction Y, the present application can accelerate the rate at which liquid drains from the fin body 100, thereby delaying the formation of frost on the fins 10 and improving the performance of the heat exchanger 01. Furthermore, the drainage rate of liquid can be accelerated during defrosting of the fins 10, thereby accelerating the defrosting process.

[0045] Optionally, in order to increase the liquid discharge speed of the fin body 100, drainage structures 160 for guiding the liquid along the second direction Y are provided at the edge areas on both sides of the middle area.

[0046] In other embodiments, a plurality of drainage structures 160 are spaced apart in the edge region along the first direction X to accelerate the drainage speed of the liquid on the fin body 100 .

[0047] Optionally, see Figure 7 , Figure 7 It is a structural schematic diagram of another embodiment of the fin body provided in the present application. The drainage structure 160 includes a third guide groove 161. Along the axial direction Z of the mounting hole 120, the notch of the third guide groove 161 and the notch of the V-shaped guide groove 110 are located on the same side of the fin body 100, and the bottom wall of the third guide groove 161 is lower than the bottom wall of the first guide groove. Therefore, the liquid in the first guide groove can also be discharged through the third guide groove 161, which can speed up the discharge speed of the liquid on the fin body 100.

[0048] Optionally, the drainage structure 160 includes a fourth guide groove 162 and a third guide groove 161 spaced apart along the first direction X. The notches of the third guide groove 161 and the fourth guide groove 162 are respectively disposed on opposite sides of the fin body 100 along the axial direction Z of the mounting hole 120. Therefore, the third guide groove 161 and the fourth guide groove 162 of this embodiment can drain liquid on both sides of the fin body 100, thereby increasing the drainage rate of the fin body 100 and improving the performance of the heat exchanger 01.

[0049] Optionally, the dimensions of the fourth guide groove 162 and the third guide groove 161 along the first direction X, and the dimensions of the fourth guide groove 162 and the third guide groove 161 along the axial direction Y are both 0.2 mm-0.4 mm.

[0050] Optionally, the dimension of the end of the inner wall 112 of the groove section of the V-shaped guide groove 110 away from the intersection and the third guide groove 161 along the first direction X is 0.1mm-0.5mm. If the dimension is too small, the third guide groove 161 may be locally deformed during processing and water may be stuck. If the dimension is too large, the drainage capacity will be lost.

[0051] Optionally, along the axial direction Z of the mounting hole 120 , the structures on both sides of the fin body 100 are the same; or one side of the fin body 100 includes the structures of all the above-mentioned fin 10 embodiments, and the other side of the fin body 100 is a flat sheet, which is not limited here.

[0052] Optionally, see Figure 6 The end of the mounting hole 120 extends along the axial direction Z to form a clamping portion 134 , which is used to clamp with the refrigerant tube 20 , thereby improving the installation stability between the fin 10 and the refrigerant tube 20 .

[0053] Specifically, along the axial direction Z, the clamping portion 134 is located on one side of the fin body 100, or refer to Figure 7 The clamping portion 135 is located on both sides of the fin body 100 and is not limited here.

[0054] Optionally, the groove width of the V-shaped guide groove 110 is close to the distance between adjacent fins 10, and the groove width can be 0.5-3.0 times the fin pitch. For example, if the fin pitch is 1.3 mm, the groove width can be 0.65 mm-3.9 mm. This arrangement can enhance the heat exchange performance of the fins 10 and increase the drainage rate of the liquid on the fins 10.

[0055] Optionally, the raised height of the central region, where the V-shaped guide groove is not provided, extending from the axially protruding edge of the mounting hole is 0.1-1.0 times the sheet spacing, for example 0.4 times. By setting a reasonable raised height, this embodiment creates less obstruction than conventional corrugated sheets and bridge sheets, thereby reducing flow resistance compared to conventional corrugated sheets or bridge sheets of the same specification.

[0056] Optionally, along the axial direction Z, the first flat portion 131 and the bottom wall of the V-shaped guide groove 110 are located at the same horizontal plane, and the groove depth of the V-shaped guide groove 110 is close to the height difference between the first flat portion 131 and the second flat portion. For example, if the height difference is 0.2 mm, the groove depth is 0.2±0.1 mm. In this embodiment, by setting a reasonable height difference and groove depth, the V-shaped guide groove 110 can smoothly transition to the first guide groove.

[0057] Optionally, along the second direction Y, the apex of the V-shaped guide groove 110 is positioned 1 mm ± 0.5 mm below the refrigerant tube 20, approximately equal to the fin spacing. By setting a reasonable distance between the apex of the V-shaped guide groove 110 and the refrigerant tube 20, the V-shaped guide groove 110 allows defrost water accumulated at the bottom of the refrigerant tube 20 to quickly enter the V-shaped guide groove 110 through capillary action when defrosting is initiated, forming a hydrophilic track. The V-shaped guide groove 110 provides stable and invisible guidance, directing water to the edge area. This allows residual water on the fin surface to be drained to the greatest extent possible at the end of defrosting, reducing the amount of water accumulated between the fins and preventing deterioration during the next frosting cycle.

[0058] Optionally, in other embodiments, along the axial direction Z, the first distance between the first area of ​​the second flat portion close to the top of the V-shaped guide groove and the plane where the first flat portion is located is greater than or equal to the second distance between the second area away from the top of the V-shaped guide groove and the plane where the first flat portion is located, that is, the first distance and the second distance can be equal, or there can be a slight height difference between the first distance and the second distance. When there is a slight height difference, the second flat portion can be regarded as a sloping wall, which has a guiding function and can speed up the speed at which the liquid on the second flat portion converges to the first flat portion.

[0059] The first guide groove, the V-shaped guide groove 110 and the drainage structure 160 extend continuously along the second direction Y, or form continuous diversion along the second direction Y through other flow channels.

[0060] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A fin of a heat exchanger, characterized in that: The fin body comprises a fin body, wherein the fin body is provided with an edge area and a middle area arranged along a first direction; The middle area is provided with a mounting hole for mounting a refrigerant pipe, the middle area is formed with a V-shaped guide groove, the edge area is formed with a first guide groove for guiding flow in the second direction, the first guide groove is connected to the end of the V-shaped guide groove, and the opening formed between the two ends of the V-shaped guide groove faces the second direction; Wherein, the area of ​​the middle region where the V-shaped guide groove is not provided protrudes from the edge area along the axial direction of the mounting hole to form the first guide groove; Wherein, the first direction, the second direction and the axial direction of the mounting hole are perpendicular to each other; In which, the bottom wall of the V-shaped guide groove and the bottom wall of the first guide groove are located in the same plane, and the height difference between the bottom wall of the first guide groove and the part of the middle area where the V-shaped guide groove is not set is greater than the height difference between the bottom wall of the V-shaped guide groove and the part of the middle area where the V-shaped guide groove is not set.

2. The fin according to claim 1, characterized in that The edge area is a first flat portion arranged parallel to the axial vertical plane, the middle area is a second flat portion arranged parallel to the vertical plane, and the fin body is further provided with a first inclined portion connected between the first flat portion and the second flat portion, and the first inclined portion is arranged at an obtuse angle to the first flat portion and the second flat portion respectively.

3. The fin according to claim 2, characterized in that The side wall of the V-shaped guide groove is arranged at an obtuse angle to the second flat portion.

4. The fin according to claim 1, characterized in that The middle area is further provided with a second guide groove extending along the first direction. The second guide groove is located on the side of the mounting hole along the first direction and is communicated with the first guide groove.

5. The fin according to claim 4, characterized in that The middle area is further provided with an annular guide groove surrounding the circumference of the mounting hole, and the annular guide groove is communicated with the second guide groove.

6. The fin according to claim 5, characterized in that The V-shaped guide groove includes two intersecting and communicating groove sections, and the intersection of the two groove sections is communicated with an annular guide groove on the outer periphery of the mounting hole; Along the first direction, ends of the two slot segments facing away from the intersection extend to two side edges of the adjacent mounting holes respectively.

7. The fin according to claim 6, characterized in that Along the first direction, a distance between an outer sidewall of the one end and a side of the edge region facing away from the middle region is greater than a distance between an inner sidewall of the one end and a side of the edge region facing away from the middle region.

8. The fin according to claim 1, wherein: The edge region is provided with a drainage structure for guiding flow along the second direction, and the drainage structure is arranged close to the edge of the fin body.

9. The fin according to claim 8, characterized in that Along the first direction, the edge areas on both sides of the mounting hole are provided with the drainage structure.

10. A heat exchanger, characterized in that: include: The fin according to any one of claims 1 to 9; The refrigerant pipe is installed in the installation hole of the fin.

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