Fin of heat exchanger and heat exchanger

Abstract

The invention provides a fin of a heat exchanger and the heat exchanger. The fin comprises a fin body, and the fin body is provided with an edge area and a middle area which are arranged in the first direction. Wherein the middle area is provided with an installation hole used for installing a refrigerant pipe, a V-shaped flow guide groove is formed in the middle area, a first flow guide groove for guiding flow in the second direction is formed in the edge area, the first flow guide groove is communicated with the end of the V-shaped flow guide groove, and an opening between the two ends of the V-shaped flow guide groove faces the flow guide direction; wherein the area, not provided with the V-shaped flow guide groove, of the middle area protrudes out of the edge area in the axial direction of the mounting hole to form a first flow guide groove, and the first direction, the second direction and the axial direction of the mounting hole are perpendicular to one another. According to the fin, the drainage speed can be increased, and the performance of a heat exchanger is improved.

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 the operation of the heat pump system, the temperature of the refrigerant inside the indoor heat exchanger is high and dissipates heat indoors, while the temperature of the refrigerant inside the outdoor heat exchanger is low and absorbs heat from the outdoors. When the outdoor air is cold and humid, the water vapor in the air is easily condensed on the heat exchanger to form condensed water. If the temperature of the heat exchanger is lower than the freezing point of water, this part of the condensed water will further condense into frost or ice. Among them, the heat exchanger mainly relies on the fins to exchange heat with the air. That is, during the heat exchange process, if the liquid on the fins is not discharged in time, the frost speed of the fins will be accelerated, or if the liquid cannot be discharged in time during the defrosting process, the defrosting process will be delayed, affecting the performance of the heat exchanger. 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, 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 for guiding along a second direction is formed in the edge area, 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 of ​​the middle area 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.

[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] Among them, 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] Wherein, the side wall of the V-shaped guide groove is arranged at an obtuse angle with 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 connected with the first guide groove.

[0009] The middle area is also 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 outer periphery of a mounting hole; along the second direction, one end of the two groove sections away from the intersection extends to the two side edges of the adjacent mounting holes respectively.

[0011] Wherein, along the first direction, the distance between the outer side wall of one end and the side of the edge region 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 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 by the present application includes a fin body, 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 for guiding along a second direction is formed in the edge area, 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 from the edge area 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 application sets a V-shaped guide groove and a first guide groove in the middle area and the edge area of ​​the fin body, respectively, and the ends of the first guide groove and the V-shaped guide groove are connected, the liquid in the middle area of ​​the fin body can be quickly discharged to the edge area through the V-shaped guide groove, and the condensed water in the edge area can be quickly discharged from the fin body through the first guide groove. At the same time, the V-shaped guide groove can reduce the residual amount of liquid in the middle area, thereby delaying the time of frosting of the fin body; in addition, compared with the planar fin body, the area of ​​the middle area of ​​the fin body of the present application where the V-shaped guide groove is not set protrudes along the axial direction of the mounting hole, which can improve the heat exchange performance of the fin body. Therefore, the fin provided by the present application can improve the heat exchange performance of the 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 drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

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

[0018] Figure 2 It is a structural schematic 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 It is another structural schematic diagram of the fin body provided by the present 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 the present application. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work 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...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication 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 used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such 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 It is a structural schematic diagram of an embodiment of a heat exchanger provided by the present application, and the heat exchanger 01 includes a refrigerant tube 20 and a plurality of fins 10. Among them, the fin 10 is provided with a mounting hole, and the refrigerant tube 20 is installed in the mounting hole. The refrigerant tube 20 is in close contact with the fin 10, so the temperature of the fin 10 is close to the temperature of the refrigerant tube 20. Among them, 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 is from the air inlet side to the air outlet side, that is, when the airflow flows through the gap between the fins 10, the heat exchange with the fins 10 and the refrigerant tube 20 is completed.

[0028] In one embodiment, the fin 10 includes a fin body. In order to clearly describe the structure of the fin body, the fin body is divided into an edge area, a middle area, and an edge area located on the other side of the middle area along the airflow direction. That is, along the airflow direction, the fin body is divided into an edge area, a middle area, and an edge area in sequence. Among them, the edge area close to the air inlet side can be regarded as the windward area, and the edge area away from the air inlet side or close to the air outlet side can be regarded as the leeward area.

[0029] See also Figures 2 to 4 , Figure 2 is a structural schematic diagram of an embodiment of a fin body provided by the present application, Figure 3 yes Figure 2 A schematic diagram of the structure of another view of the fin body of the embodiment, Figure 4 yes Figure 2A structural schematic diagram of another view of the fin body of the embodiment, the fin body 100 is provided with an edge area, a middle area and an edge area arranged along the first direction X, wherein the middle area is provided with a mounting hole 120 for mounting the refrigerant pipe 20, and a V-shaped guide groove 110 is formed in the middle area, and a first guide groove for guiding along the second direction Y is formed in the edge area, the first guide groove is connected to the end 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. Among them, the area in the middle area where the V-shaped guide groove 110 is not provided protrudes from the edge area along the axial direction Z of the mounting hole 120 to form the first guide groove. Among them, the second direction Y, the first direction X and the axial direction Z of the mounting hole 120 are arranged 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, wherein 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, and achieve stable hidden guidance, therefore, the V-shaped guide groove 110 can speed up the liquid in the middle area to be guided to the first guide groove. 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 the 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, so that 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 planar fin body 100, the area of ​​the middle area of ​​the fin body 100 of the present application where the V-shaped guide groove 110 is not set protrudes from the edge area 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 fin 10 is in use, the first direction X is set parallel to the airflow direction; the second direction Y is parallel to the gravity direction. During the heat exchange between the fin body 100 and the airflow, the condensed water formed by the air on the fin body 100 and the refrigerant pipe can be guided by the V-shaped guide groove 110 in the middle area to the first guide groove in the edge area, thereby accelerating the discharge of the condensed water on the fin body 100 and reducing the residual amount of condensed water on the fin body 100, thereby delaying the frosting time of the fin body 100, and thus improving the performance of the heat exchanger 01. During the defrosting of the fin body 100, the V-shaped guide groove 110 and the first guide groove drain the residual water on the surface of the fin body 100 to the maximum extent at the end of defrosting, reducing the amount of water stored between the fins 10, avoiding the deterioration of the next frosting cycle, and improving the performance of the heat exchanger 01.

[0033] Optionally, the edge region is a first flat portion 131 arranged in a vertical plane parallel to the axial direction Z of the mounting hole 120, and the middle region is a second flat portion 132 arranged in parallel to the vertical plane. The fin body 100 is further provided with a first inclined portion 133 connected between the first flat portion 131 and the second flat portion 132, and the first inclined portion 133 is arranged at an obtuse angle to the first flat portion 131 and the second flat portion 132. It can be understood 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 between the second flat portion 132 and the first inclined portion 133 is an obtuse angle, so the first inclined portion 133 has a flow guide 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 frosting of 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 (refer to label 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 guiding water to the first guide groove can be improved, and the residual liquid 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 of 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 faster gathered to the first guide groove, thereby increasing the diversion speed of the liquid in the V-shaped guide groove.

[0038] Optionally, see Figure 5 to Figure 6 , Figure 5 is another structural schematic diagram of the fin body provided in this application, Figure 6 yes Figure 5 A schematic diagram of the structure of another view of the fin body of the embodiment, the side wall of the V-shaped guide groove 110 is set at an obtuse angle to the second flat portion 132. It can be understood 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 side wall of the V-shaped guide groove 110 is set at an obtuse angle to the second flat portion 132. Therefore, the side wall of the V-shaped guide groove 110 has a guiding function, which can speed up the speed at which the liquid in the second flat portion 132 converges to the V-shaped guide groove 110, further speed up the discharge of the liquid in the middle area of ​​the fin body 100, and reduce the residual amount of liquid on the fin body 100, thereby delaying the time for the fin body 100 to frost or speeding up the defrosting speed of the fin body 100, thereby improving the heat exchange performance of the heat exchanger 01.

[0039] Optionally, the middle area 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 of ​​the area with a large surface temperature difference of the fin body 100 around the mounting hole 120, so 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 the liquid at the position of the second guide groove 140 can be guided and discharged from the fin body 100 along the second direction Y through the first guide groove, which can reduce the residual amount of liquid on the fin body 100, delay the frost time of the fin or accelerate the defrosting process.

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

[0041] Optionally, the V-shaped guide groove 110 includes two groove sections that intersect and communicate with each other, and the intersection of the two groove sections is communicated with an annular guide groove 150 on the periphery of a mounting hole 120; along the second direction Y, one end of the two groove sections away from the intersection extends to the two side edges of the adjacent mounting hole 120. The V-shaped guide groove 110 of this embodiment is communicated with the annular guide groove 150, and the liquid gathered in the annular guide groove 150 on the periphery of the mounting hole 120 can be implicitly guided to the first guide groove in the edge area through the V-shaped guide groove 110 and merged into the first guide groove, thereby finally realizing rapid discharge of the liquid.

[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 is at an acute angle, which can avoid the problem of reduced guide speed caused by excessive 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 side wall 111 of the end of the groove section of the V-shaped guide groove 110 away from the intersection and the side of the edge area away from the middle area is greater than the distance between the inner side wall 112 of the end of the groove section of the V-shaped guide groove 110 away from the intersection and the side of the edge area away from the middle area. That is, the end of the inner side wall 112 should be closer to the side of the edge area away from the middle area, which can ensure that the liquid guided by the V-shaped guide groove 110 successfully flows into the first guide groove, thereby avoiding the problem of the liquid mistakenly entering the second guide groove 140 and causing the liquid diversion speed to decrease.

[0044] Optionally, in order to increase the liquid discharge speed of the fin body 100, a drainage structure 160 that guides along the second direction Y is provided in the edge area, and the drainage structure 160 is arranged close to the edge of the fin body 100. It can be understood that the windward area of ​​the fin body 100 contacts the airflow first compared with the middle area and the leeward area, so the air first forms condensed water in the windward area of ​​the fin body 100. The present application can accelerate the speed of liquid discharge from the fin body 100 by providing a drainage structure 160 that guides along the second direction Y in the windward area, thereby delaying the time for the fin 10 to frost, and further improving the performance of the heat exchanger 01. In addition, when the fin 10 is defrosted, the liquid discharge speed can also be accelerated, thereby accelerating the defrosting speed of the fin 10.

[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, along the first direction X, a plurality of drainage structures 160 are disposed at intervals in the edge region 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 by 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 arranged at intervals along the first direction X, wherein the notch of the third guide groove 161 and the notch of the fourth guide groove 162 are respectively arranged on two side surfaces of the fin body 100 that are arranged opposite to each other 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 discharge the liquid on both sides of the fin body 100, which can increase the drainage speed of the fin body 100 and improve 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 V-shaped guide groove 110 away from the intersection with 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 ability may 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 , and the clamping portion 134 is used to clamp with the refrigerant pipe 20 , which can improve the installation stability between the fin 10 and the refrigerant pipe 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, which is not limited here.

[0054] Optionally, the groove width of the groove section 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 inter-fin spacing. For example, if the inter-fin spacing is 1.3 mm, the groove width can be 0.65 mm-3.9 mm. Through the above arrangement, the heat exchange performance of the fin 10 can be enhanced, and the discharge speed of the liquid on the fin 10 can be increased.

[0055] Optionally, the protrusion height of the axial protrusion edge area of ​​the middle area where the V-shaped guide groove is not provided is 0.1-1.0 times, for example, 0.4 times, of the sheet spacing. By setting a reasonable protrusion height, this embodiment forms less obstruction than ordinary corrugated sheets and bridge sheets, and thus can reduce flow resistance compared to ordinary 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 set at 1mm±0.5mm below the refrigerant tube 20, which is 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 can allow the defrosting water accumulated at the bottom of the refrigerant tube 20 to quickly enter the V-shaped guide groove 110 through capillary action to form a hydrophilic track when defrosting is started. The V-shaped guide groove 110 realizes stable and hidden guidance, guides the water to the edge area, and drains the residual water on the fin surface to the maximum extent when defrosting is completed, reducing the amount of water stored between the fins and avoiding deterioration of the next frosting cycle.

[0058] Optionally, in other embodiments, along the axial direction Z, a first distance between a 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 a second distance between a 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 may be equal, or there may be a slight height difference between the first distance and the second distance. When there is a slight height difference, the second flat portion may 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 guide along the second direction Y through other flow channels.

[0060] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, 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: It 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 along 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 area 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.

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 1, characterized in that: 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 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 of the V-shaped guide groove and the portion of the middle area where the V-shaped guide groove is not set.

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

5. 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.

6. The fin according to claim 5, characterized in that: The middle area is also 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.

7. The fin according to claim 6, characterized in that: 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 outer periphery of the mounting hole; along the first direction, one end of the two groove sections away from the intersection extends to the two side edges of the adjacent mounting holes respectively.

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

9. The fin according to claim 1, characterized in that: 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.

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

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

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