A heat exchanger

Abstract

The application discloses a heat exchanger, which comprises a plurality of fins and a heat exchange tube. The heat exchange tube comprises a first channel and a first wall. The wall surrounding the first channel comprises the first wall. The plurality of fins are arranged in the length direction of the heat exchange tube. The heat exchange tube penetrates the plurality of fins arranged in the thickness direction of the fins. The fins comprise a body part, which has a first through hole and a heat exchange tube penetrating the first through hole. The body part further comprises a second through hole, and the wall surrounding the second through hole comprises a second side wall. The fins further comprise a first flange, one end of the first flange being connected with the second side wall, and the other end of the first flange being connected with one of the fins adjacent to the fin in the length direction of the heat exchange tube. The heat exchanger can effectively utilize the fin material to realize on-demand design of the spacing between adjacent fins and meet the heat exchange performance of the heat exchanger.

Description

Technical Field

[0001] This application relates to the field of heat exchange technology, specifically to a tube heat exchanger for use in the air conditioning field. Background Technology

[0002] In related technologies, tube-type heat exchangers generally consist of multiple fins and multiple heat exchange tubes. The heat exchange tubes pass through multiple fins, and the fins and heat exchange tubes are fixedly connected. A preset distance is maintained between two adjacent fins through spacers. In some heat exchanger designs, the preset distance between two adjacent fins is relatively large, while the diameter of the heat exchange tubes is relatively small. When manufacturing a heat exchanger with a fin spacing greater than or equal to the diameter of the heat exchange tubes, other auxiliary components are required to control the preset fin distance, which not only increases material costs but also affects the heat exchange performance of the heat exchanger. Summary of the Invention

[0003] Therefore, one object of this application is to provide a heat exchanger that can effectively utilize fin material to achieve on-demand design of the spacing between adjacent fins and meet the heat exchanger's heat transfer performance.

[0004] This application discloses a heat exchanger comprising a plurality of fins and a heat exchange tube. The heat exchange tube has a first channel and a first wall. The wall surrounding the first channel includes the first wall. The plurality of fins are arranged in the length direction of the heat exchange tube. The heat exchange tube passes through the plurality of fins arranged in the thickness direction of the fins. One fin includes a body portion having a first through hole through which the heat exchange tube passes. The body portion also includes a second through hole. The wall surrounding the second through hole includes a second side wall. The fin also includes a first flange. One side of the first flange is connected to the second side wall, and the other side of the first flange is connected to one of the fins adjacent to the fin in the length direction of the heat exchange tube.

[0005] According to the heat exchanger proposed in this application, the heat exchanger includes multiple fins and a heat exchange tube. The fins include a body portion with a first through hole and a second through hole. Multiple fins are arranged along the length of the heat exchange tube, and the heat exchange tube passes through the first through hole. There is a gap between two adjacent fins along the length of the heat exchange tube. The fins also include a first flange, and the second through hole includes a second sidewall. The first flange and the second sidewall are connected. The material of the first flange is taken from the fin body portion. This heat exchanger can effectively utilize the fin material to design the spacing between adjacent fins as needed. In some heat exchangers, when the spacing between adjacent fins is equal to or exceeds the outer diameter of the heat exchange tube, the design of the fin flange is no longer limited to the traditional structure. The technical solution of this application can achieve flexible design of the fin spacing by effectively utilizing the material of the fin body portion, thereby achieving the best heat exchanger performance and meeting the heat exchange area and heat exchange performance requirements of the heat exchanger. Attached Figure Description

[0006] Figure 1 This is a three-dimensional schematic diagram of a heat exchanger structure according to an embodiment of this application.

[0007] Figure 2 This is a schematic diagram of the three-dimensional structure of a fin according to an embodiment of this application.

[0008] Figure 3 yes Figure 2 A schematic front view of the fin structure shown.

[0009] Figure 4 yes Figure 3 A schematic diagram of the structure of one angle of the fin shown.

[0010] Figure 5 yes Figure 4 A magnified schematic diagram of the structure of section A of the fin shown.

[0011] Figure 6 This is a schematic diagram of the three-dimensional structure of the fins according to another embodiment of this application.

[0012] Figure 7 yes Figure 6 The diagram shows the front view of the fin structure.

[0013] Figure 8 yes Figure 6 The schematic diagram shows the structure of one angle of the fin.

[0014] Figure 9 This is a schematic diagram of the three-dimensional structure of the fins according to another embodiment of this application.

[0015] Figure 10 yes Figure 9 A schematic diagram of the front view of the fins shown.

[0016] Figure 11 This is a schematic diagram of the fin structure of yet another embodiment of this application.

[0017] Figure 12 yes Figure 11 The diagram shows an enlarged view of the structure of fin B.

[0018] Figure 13 This is a schematic diagram of the fin structure of yet another embodiment of this application.

[0019] Figure 14 yes Figure 13 The diagram shows an enlarged view of section C of the fin.

[0020] Figure 15 This is a schematic diagram of the fin structure of yet another embodiment of this application.

[0021] Figure 16 yes Figure 15 The diagram shows an enlarged view of section D of the fin structure.

[0022] Figure 17 This is a schematic diagram of the fin structure of yet another embodiment of this application.

[0023] Figure 18 yes Figure 17 The diagram shows an enlarged view of fin E.

[0024] Figure 19 yes Figure 1 The diagram shows an enlarged view of section F of the fin.

[0025] Figure 20 yes Figure 6 The diagram shows an enlarged view of wing G.

[0026] Figure label:

[0027] Fin 1, body 11, opening 13, first sidewall 131, first side surface 1001, second side surface 1002.

[0028] First through hole 110, second through hole 120, second sidewall 1201

[0029] First flange 121, first sub-section 1211, first reinforcing section 12111, second sub-section 1212.

[0030] Second flanging 122, third sub-section 1221, fourth sub-section 1222

[0031] The first convex part 101, the first end part 1011 of the first convex part, the second end part 1012 of the first convex part

[0032] the second protruding part 102, the first end part 1021 of the second protruding part, the second end part 1022 of the second protruding part, the first sub-protruding part 1023, the second sub-protruding part 1024;

[0033] third convex portion 103;

[0034] Annular protrusion 104, flange 1141;

[0035] Fifth convex part 105, first concave part 106, first line 301, second line 302;

[0036] Heat exchanger 100, heat exchange tube 2, first channel 21, first wall 22, first piece 3, second channel 31, second wall 32; Detailed Implementation

[0037] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or fixture referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application.

[0038] The heat exchanger 100 according to an embodiment of this application includes a plurality of fins 1 and a plurality of heat exchange tubes 2, wherein the plurality of fins 1 are in the thickness direction of the fins 1 ( Figure 1 The heat exchanger 100 is arranged in the z-direction (as shown), with a gap between two adjacent fins 1 in the thickness direction. The fin 1 has a first through hole 110. The heat exchange tube 2 is a round tube with a hollow channel. The heat exchange tube 2 passes through the first through hole 110 of the fin 1. The heat exchanger 100 is used as an outdoor heat exchanger in the heating mode.

[0039] In some embodiments, such as Figure 1 As shown, the heat exchanger 100 includes multiple fins 1 and heat exchange tubes 2. The heat exchange tubes 2 include a first channel 21 and a first wall 22. The wall surrounding the first channel 21 includes the first wall 22. Multiple fins 1 are arranged in the length direction of the heat exchange tubes 2. The heat exchange tubes 2 pass through multiple fins 1 arranged in the thickness direction of the fins 1. The fins include a body portion 11. The body portion 11 has a first through hole 110. The heat exchange tubes 2 pass through the first through hole 110. The body portion also includes a second through hole (120). The wall surrounding the second through hole 120 includes a second side wall 1201. The fins 1 also include a first flange 121. One side of the first flange 121 is connected to the second side wall 1201. The other side of the first flange 121 is connected to one of the adjacent fins 1 in the length direction of the heat exchange tube 2. The first flange 121 is formed by bending a portion of the material of the body portion 1 after cutting it.

[0040] By connecting the first flange 121 and the second sidewall 1201, the heat exchanger 100 can effectively utilize the fin material to design the spacing between adjacent fins 1 as needed, and can meet the heat exchange area and heat exchange performance requirements of the heat exchanger 100.

[0041] In some designs, such as Figures 1 to 8As shown, the height of the first flange 121 is h1, and the equivalent diameter of the first through hole 100 is d, where h1 is greater than d. The diameter of the heat exchange tube 2 is relatively small; for example, the equivalent diameter of the first through hole 100 is 6 mm, 5 mm, 3 mm, 2 mm, 1 mm, etc. For example, the distance p1 between two adjacent fins 1 in the heat exchanger 1 is 7 mm, while the outer diameter of the heat exchange tube 1 is only 5 mm. Therefore, conventional techniques cannot be used to manufacture this type of heat exchanger 1. Technicians have discovered that other materials on the fins 1 can be used to design the spacing p1 between adjacent fins 1 as needed. Therefore, in related technologies, when the fin spacing p between adjacent fins 1 is greater than 0.25d, in some designs, the height h1 of the first flange 1 is equal to the fin spacing p. Traditional designs can no longer meet the requirements. Therefore, by cutting a portion of the fin material and bending it to form the first flange 121, it is advantageous to achieve the requirement that h1 is greater than 0.25d. The heat exchanger 100 is provided, and the heat exchange area of ​​the heat exchanger 100 is sufficient.

[0042] In some designs, such as Figure 2 and Figure 6 As shown, the first flange 121 includes a first sub-part 1211 and a second sub-part 1212. The first sub-part 1211 is connected to the second sidewall 1201. The second sub-part 1212 is farther away from the main body 11 than the first sub-part 1211. The width of the first sub-part 1211 is k1, and the width of the second sub-part is k2. k2 is greater than k1. Alternatively, the width of the first flange 121 gradually increases in the height direction of the first flange 121. Since the second sub-part 1212 is relatively close to the second through hole 120 of the adjacent fin 1, increasing the width of the second sub-part 1212 of the first flange 121 can reduce the risk of the first fin 121 penetrating the second through hole 120, thereby improving the reliability of the heat exchanger 100 and reducing the impact on heat exchange performance.

[0043] In some embodiments, such as Figures 1 to 8 , Figure 19 , Figure 20 As shown, the first flange 121 includes a first reinforcing part 12111, at least a portion of the first reinforcing part 12111 extends toward the protruding direction of the first flange 121, and the body part 11 includes a second reinforcing part 111, which is connected to the first reinforcing part 12111. By providing the first reinforcing part 12111 and the second reinforcing part 111, the fin 1 can improve the strength of the first flange 121, which is beneficial to improving the reliability of the heat exchanger.

[0044] Technicians also discovered that by optimizing the design of the fin structure, the heat exchange efficiency of the heat exchanger can be improved, and furthermore, the heat exchange performance of the heat exchanger can be balanced with the reduction of frost blockage.

[0045] In the application state, the fin 1 of this application embodiment has an opening 13 on at least one side in the width direction of the fin 1. The opening 13 has an opening facing one side in the width direction of the body part 11. Therefore, the edge of the body part 11 has an opening. By providing an opening at the edge of the body part 11, the heat transfer of the edge part of the body part 11 can be blocked. The heat exchange on the side of the opening 13 of the fin 1 is relatively weak, and the amount of frost is less than that in other parts of the body part 11. Furthermore, the material used to manufacture the opening is made into a flange with a controlled spacing. Therefore, it not only meets the heat exchange area requirements of the fin 1, but also reduces the frost on the fin surface, which is beneficial to improving the heat exchange efficiency of the fin 1.

[0046] Specifically, in some embodiments, such as Figures 1 to 20 The fin 1 shown includes a plurality of openings 13, which are spaced apart along the length of the body portion 11. That is, the edge of the body portion 11 is provided with a plurality of openings 13. It can be understood that the openings 13 may be provided on both sides of the body portion 11 in the width direction, or the openings 13 may be provided on only one side.

[0047] In some embodiments, such as Figures 1 to 20 As shown, the fin 1 includes a body portion 11 and a second flange 122. The body portion 11 also includes an opening portion 13. The opening portion 13 has an opening facing one side in the width direction of the fin 1. The opening portion 13 includes a first sidewall 131. The wall surrounding the opening includes the first sidewall 131. The second flange 122 is connected to the first sidewall 131.

[0048] In this embodiment, the second flange 122 protrudes from the body portion, which helps to increase the through-hole area of ​​the opening portion 13 and reduce the frosting area. On the other hand, the second flange 122 can also provide support force between adjacent fins 1, thereby reducing the deformation of the fins 1.

[0049] In some embodiments, such as Figures 1 to 20 As shown, the fin 1 has openings 13 on both sides of the body portion 11 in the width direction.

[0050] In some embodiments, such as Figures 1 to 20 As shown, the first through hole 110 penetrates the body portion 13. The body portion 12 includes a plurality of first through holes 110. The plurality of first through holes 110 are arranged in the length direction of the fin 1. The outline of the first through hole 110 is circular or elliptical. The first through hole 110 has a geometric center. In the length direction of the fin, the line connecting the geometric centers of the two adjacent first through holes 110 that are closest to the first flange 121 is defined as the second line 302. The plane that coincides with the second line and is perpendicular to the length direction of the fin is defined as the first plane. The plane where the first sub-part is located is defined as the second plane. The first plane is parallel to or intersects with the second plane.

[0051] In some embodiments, such as Figures 1 to 20 As shown, the body portion 13 includes a first side surface 1001 and a second side surface 1002 in the thickness direction of the body portion 13. The opening portion 13 has a rectangular outline in the first side surface 1001, and the first through hole 110 has a circular outline in the first side surface 1001. The center of two adjacent first through holes 110 in the length direction of the fin 1 forms an isosceles triangle with the center of the rectangle.

[0052] In some embodiments, it is understood that the contours of the opening 13 on the first side 1001 and the second side 1002 may be different or the same, specifically, as shown in the figure. Figures 1 to 20 As shown, the opening 13 has the same outline on the first side 1001 and the second side 1002. The outline of the opening 13 on the second side 1002 is rectangular, and the outline of the first through hole 110 on the second side 1002 is circular. The center of the circle of two adjacent first through holes 110 in the length direction of the fin 1 forms an isosceles triangle with the center of the rectangle. Therefore, the upper and lower symmetrical edges of the opening 13 are equidistant from the two adjacent first through holes 110 in the length direction of the fin 1. When the fin 1 When applied to heat exchanger 100, the opening 13 creates many gaps on the surface of fin 1, and the outline of the opening 13 on the first side 1001 is rectangular. When fin 1 is applied to heat exchanger 100, the opening 13 will block the heat conduction between heat exchange tube 2 and fin 1. When the geometric center of the rectangle is the same as the length of the line connecting the centers of two adjacent circles in the length direction of fin 1, the heat exchange capacity of adjacent heat exchange tubes 2 is comparable. Heat exchanger 100 fully utilizes the heat exchange between each heat exchange tube 2 and fin 1, and the heat transfer of fins is uniform.

[0053] In some embodiments, such as Figures 1 to 20 As shown, the body part 13 includes a second flange 122. The first flange 121 and the second flange 122 are alternately arranged in the length direction of the fin 1. The two first flanges 121 are arranged opposite to each other in the width direction of the fin 1, and the two second flanges 122 are arranged opposite to each other in the width direction of the fin 1. The distance between two adjacent second flanges 122 is L1, and the distance between two adjacent first flanges 121 is L2. L1 is greater than or equal to L2. The first flanges 121 and the second flanges 122 can provide support for adjacent fins 1 and can provide support for fins 1 in multiple directions, which helps to reduce the deformation of fins 1 and improve the reliability of fins 1.

[0054] In this application, the alternating arrangement is not limited to an alternation of a first flange 121 and a second flange 122, and the number is not limited.

[0055] In some embodiments, one or more first flanges 121 are provided between two adjacent second flanges 122 in the width direction of fin 1. Alternatively, one or more first flanges 121 can be provided between two adjacent first fins 121 in the width direction of fin 1. The first flanges 121 and the second flanges 122 can provide support between adjacent fins 1 and can provide support for fins 1 in multiple directions, which is beneficial to reduce fin deformation and improve the reliability of fins 1.

[0056] Furthermore, in some embodiments, such as Figures 6 to 8 As shown, a first flange 121 is provided between two opposing second flanges 122 in the width direction of fin 1. The first flanges 121 are staggered in the length direction of fin. The distance between the first flanges 121 and the second flanges in the width direction of fin 1 is L3. The distance between the second flanges 122 near the edge and the second flange in the middle area of ​​the main body 12 in the width direction of fin 1 is L4. L3 is greater than L4. Therefore, considering the reduction of frost on the edge of fin 1, by providing a second through hole 120 in the middle area of ​​the main body 11, and staggering the opening 13 and the second through hole 120, the frost in the middle area of ​​the main body 12 can be more evenly distributed, reducing the situation of excessive frost in local areas.

[0057] When the fins 1 are applied in the heat exchanger 100 and the heat exchanger 100 is operating in heating mode, there is a first flange 121 and a second flange 122 between two adjacent main body parts 11. The first flange 121 is connected to the main body part 11, and the second flange 122 is connected to the main body part 11. When the fins 1 are applied in the heat exchanger and are operating in heating mode, the first flange 121 is not connected to the heat exchange tube 2, and the second flange 122 is not connected to the heat exchange tube 2. On the one hand, this helps to reduce the thermal resistance between the fins 1 and the heat exchange tube 2 and improve the heat exchange performance of the heat exchanger 100. On the other hand, it reduces the risk of gaps between the flange 12 and the heat exchange tube 2, reduces the accumulation of condensate and dust in the gaps, and helps to improve the corrosion resistance of the heat exchanger 100.

[0058] In some embodiments, such as Figure 9 and Figure 10As shown, the body also includes a first protrusion 101. The first protrusion 101 is inclined relative to the length direction of the fin 1. At least a portion of the first protrusion 101 is located between the first through hole 110 and the opening 13. The first protrusion 101 includes a first end and a second end 1012. The first end 1011 of the first protrusion 101 is closer to the opening 13 than the second end 1012 of the first protrusion 101. It can be understood that the first end 1011 of the first protrusion 101 can coincide with the edge of the fin 1. The first protrusion 101 is located close to the opening 13. When the fin 1 is applied to the heat exchanger 100 and the heat exchanger 100 is operating in the cooling mode, at least a portion of the first protrusion 101 is located above the opening 13. The first protrusion 101 is inclined relative to the length direction of the fin 1. The maximum dimension of the opening 13 in the width direction of the fin 1 is W1. The maximum dimension of the first protrusion 101 in the width direction of the body 13 is W2, and W2 is greater than or equal to W1. Therefore, when fin 1 is used in heat exchanger 100, due to the low surface temperature of fin 1, water vapor in the air forms condensate on the surface of fin 1. As the condensate flows downward, since the body part 11 is provided with a first through hole 110, when the condensate flows to the vicinity of the first through hole 110, water is easily adsorbed at the edge of the first through hole 110, causing water accumulation. Therefore, by providing the first protrusion 101, it is beneficial to reduce the accumulation of condensate near the first through hole 110 during the use of fin 1. The first protrusion 101 has a water guiding function, which can guide the condensate hanging on the surface of fin 1 to be discharged, which is beneficial to reduce frost formation on the surface of fin 1.

[0059] Furthermore, such as Figure 10 As shown, the body portion 11 includes a second through hole 120, the edge of which is connected to the second flange 121. The maximum dimension of the second through hole 120 in the width direction of the body portion 11 is W3. The body portion 11 also includes a third protrusion 103, which is strip-shaped or arc-shaped. The third protrusion 103 is close to the second through hole 120 relative to the first through hole 110, and at least a portion of the third protrusion 103 is located above the second through hole 120. In the use state of the fin 1, at least a portion of the third protrusion 103 is located above the second through hole 120. The second protrusion 102 is inclined relative to the length direction of the fin 1. The maximum dimension of the third protrusion 103 in the width direction of the body portion 11 is W4, and W4 is greater than or equal to W3.

[0060] In some embodiments, such as Figure 10As shown, the body portion 11 includes two or more annular protrusions 104, each annular protrusion 104 protruding outward on one side in the thickness direction of the body. A third protrusion 103 is provided between two adjacent annular protrusions 104 in the length direction of the fin 1. One end of the third protrusion 103 is connected to one annular protrusion 104, and the other end of the third protrusion 103 is connected to another annular protrusion. And / or, the body portion 11 includes two or more annular protrusions 104, and a first recess 106 is provided between two adjacent annular protrusions 104 in the length direction of the fin 1. One end of the first recess 106 is connected to one protrusion 104, and the other end of the first recess 106 is connected to another annular protrusion 104.

[0061] It is understandable that the first protrusion 101 can be set in addition to Figure 10 In other technical solutions shown, considering that the first protrusion 101 is technically similar in all solutions, and also considering the clarity of the accompanying drawings, no further details are provided. Figure 9 and Figure 10 Other technical solutions besides these should be marked in the same way.

[0062] In some embodiments, such as Figures 11 to 18 As shown, the body portion 11 includes a second protrusion 102, which is disposed around the first through hole 110. The second protrusion 102 includes a first end 1021 and a second end 1022. In the length direction of the body portion 11, when the fin 1 is applied in the heat exchanger 100 and the heat exchanger 100 is in the heating mode, the first end 1021 of the second protrusion 102 is lower than the second end 1022 of the second protrusion 102, and the second end 1022 of the second protrusion 102 is located above the first through hole 110. The second protrusion 102 is advantageous in preventing the condensate condensed on the surface of the fin 1 from flowing to the heat exchange tube 2 that penetrates the first through hole 110. On the other hand, it can break the water film on the surface of the fin 1, which helps to quickly remove the condensate on the surface of the fin 1.

[0063] In some embodiments, such as Figures 11 to 18 As shown, a line parallel to the length direction of the body portion and passing through the center of the first through hole 110 is defined as the first line 301. The length of the second protrusion 102 is less than or equal to the equivalent diameter of the first through hole 110. In the width direction of the body portion 11, the first end 1021 of the second protrusion 102 is located on one side of the first line 301, and the second end 1022 of the second protrusion 102 is located on the other side of the first line.

[0064] Furthermore, in some implementations, such as Figure 14 and Figure 16As shown, the second protrusion 102 is an arc-shaped or strip-shaped structure. The second protrusion 102 helps to block the condensate generated on the surface of the fin 1 in the application mode from flowing to the pipe through the first through hole 110. On the other hand, it can break the water film formed on the surface of the fin 1, which helps to quickly remove the condensate.

[0065] Furthermore, in some embodiments, such as Figures 15 to 18 As shown, when the fin 1 is applied in the heat exchanger 100, and the heat exchanger 100 is in heating mode, the second protrusion 102 includes a first sub-protrusion 1023 and a second sub-protrusion 1024. The first sub-protrusion 1023 and the second sub-protrusion 1024 are arranged around the first through hole 110. The extension direction of the first sub-protrusion 1023 and the extension direction of the second sub-protrusion 1024 intersect. Specifically, as shown... Figure 15 and Figure 16 As shown, the first sub-protrusion 1023 and the second sub-protrusion 1024 are connected, or as follows: Figure 17 and Figure 18 As shown, a gap is provided between the first sub-protrusion 1023 and the second sub-protrusion 1024. The second protrusion 102 is provided to block the condensate generated on the surface of the fin 1 in the application mode from flowing to the pipe through the first through hole 110. On the other hand, it can break the water film formed on the surface of the fin 1, which helps to quickly remove the condensate.

[0066] In some embodiments, such as Figures 1 to 8 As shown, the body portion 13 also includes a fifth protrusion 105 and a first recess 106. There are multiple fifth protrusions 105, spaced apart in the width direction of the fin 1. There are also multiple first recesses 106, spaced apart in the width direction of the fin 1. Figure 1 (As shown in the y direction), there is a first recess 106 between two adjacent fifth protrusions 105. By providing the fifth protrusions 105 and the first recess 106, the strength of the body part 11 is improved and the deformation of the body part 11 is reduced.

[0067] Furthermore, the maximum height of the fifth protrusion 105 is H1, 0.2mm≤H1≤1.2mm, and / or the maximum height of the first recess 106 is H2, 0.2mm≤H2≤1.2mm. If the height of the fifth protrusion 105 is less than 0.2mm, the strengthening effect of the fin 1 is not obvious. If the height of the fifth protrusion 105 is greater than 1.2mm, the fin 1 is prone to tearing during processing. Therefore, the effect is best when the height is between 0.2mm and 1.2mm.

[0068] Understandably, the fifth protrusion 105 design can be applied to... Figures 1 to 20 All technical solutions.

[0069] In some embodiments, such as Figure 1 and Figure 8 As shown, the body portion includes an annular protrusion 104, which protrudes outward from one side of the body 12 in the thickness direction. The annular protrusion 104 surrounds the first through hole 110. There are multiple annular protrusions 104. A fifth protrusion 105 is provided between two adjacent annular protrusions 104 in the length direction of the fin 1. One end of the fifth protrusion 105 is connected to one annular protrusion 104, and the other end of the fifth protrusion 105 is connected to another annular protrusion 104. It can be understood that in some embodiments, there are multiple annular protrusions 104, and between two adjacent annular protrusions 104 in the length direction of the fin... A first recess 106 can be provided, one end of which is connected to an annular protrusion 104, and the other end of which is connected to another annular protrusion 104. When the fin 1 is applied in the heat exchanger 100 and the heat exchanger is in heating mode, the annular protrusion 104 can break the water film on the surface of the body 11, which is beneficial for water conduction on the surface of the body 11. A first recess 105 is provided between adjacent annular protrusions 104 in the length direction of the fin 1, and the condensate on the surface of the body 12 can flow down along the first recess 105, which is beneficial for guiding the drainage of the surface of the fin 1 and reducing frost formation on the surface of the fin 1.

[0070] Furthermore, the annular protrusion 104 may also include a flange 1041, which is arranged around the first through hole 110. When the fin 1 is applied in the heat exchanger 100 and the heat exchanger 100 is operating in the heating mode, the flange 1041 helps to increase the welding area of ​​the fin 1 with the tube penetrating the first through hole 10 in the heat exchanger 100 and reduce the offset of the fin 1.

[0071] Understandably, the annular protrusion 104 design can be applied to... Figures 1 to 20 All technical solutions.

[0072] In some embodiments, such as Figures 1 to 20 As shown, the first flange 121 includes a first sub-part 1211 and a second sub-part 1212. The first sub-part 1211 is connected to the main body 11, and the second sub-part 1212 is a free end. The free ends of two adjacent second flanges 122 face opposite directions. The second flange 122 includes a third sub-part 1221 and a fourth sub-part 1222. The third sub-part 1221 is connected to the main body 11, and the fourth sub-part 1222 is a free end. The free ends of two adjacent second flanges 122 face opposite directions.

[0073] The heat exchanger 100 of this application embodiment can not only reduce frost blockage, but also meet the heat exchange performance of the heat exchanger 100, which is beneficial to improving the heat exchange efficiency of the heat exchanger 100.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0075] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0076] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0077] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0078] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A heat exchanger, characterized in that, The heat exchanger (100) includes a plurality of fins (1) and a heat exchange tube (2). The heat exchange tube (2) has a first channel (21) and a first wall (22). The wall surrounding the first channel (21) includes the first wall (22). The plurality of fins (1) are arranged in a longitudinal direction of the heat exchange tube (2), and the heat exchange tube (2) passes through the plurality of fins (1). The fin includes a body portion (11) having a first through hole (110), through which the heat exchange tube (2) passes. The body portion also includes a second through hole (120), and the wall surrounding the second through hole (120) includes a second side wall (1201). The fin (1) also includes a first flange (121), one side of which is connected to the second side wall (1201), and the other side of which is connected to one of the fins (1) adjacent to each other in the length direction of the heat exchange tube (2).

2. The heat exchanger according to claim 1, characterized in that, The height of the first flange (121) is h1, and the equivalent diameter of the first through hole (110) is d, wherein h1 is greater than 0.25d.

3. The heat exchanger according to claim 1, characterized in that, The first flange (121) includes a first sub-part (1211) and a second sub-part (1212). The first sub-part (1211) is connected to the second sidewall (1201). The second sub-part (1212) is farther away from the main body (11) than the first sub-part (1211). The width of the first sub-part (1211) is k1, and the width of the second sub-part (1212) is k2, where k2 is greater than k1.

4. The heat exchanger according to claim 1, characterized in that, The first flange (121) includes a first reinforcing part (12111), at least a portion of the first reinforcing part (12111) extends toward the protruding direction of the first flange (121), and the body part (11) includes a second reinforcing part (111), the second reinforcing part (111) being connected to the first reinforcing part (12111).

5. The heat exchanger according to any one of claims 1 to 4, characterized in that, The body part (11) also includes an opening (13) located on at least one side of the fin (1) in the width direction.

6. The heat exchanger according to claim 5, characterized in that, The opening (13) includes a second sidewall (1201), and the wall surrounding the opening (13) includes the second sidewall (1201). The fin also includes a second flange (122), one end of which is connected to the second sidewall (1201), and the other end of which is connected to one of the adjacent fins (1) in the length direction of the heat exchange tube (2).

7. The heat exchanger according to claim 5, characterized in that, The body part (11) includes a second flange (122). The first flange (121) and the second flange (122) are alternately arranged in the length direction of the fin (1). Two first flanges (121) are arranged opposite to each other in the width direction of the fin (1), and two second flanges (122) are arranged opposite to each other in the width direction of the fin (1). The distance between two adjacent first flanges (121) is L2, and the distance between two adjacent second flanges (122) is L1. L1 is greater than or equal to L2.

8. The heat exchanger according to claim 5, characterized in that, The body portion (11) includes a first side surface (1001) and a second side surface (1002) in the thickness direction of the body portion (11). The opening portion (13) has a rectangular outline on the first side surface (1001), and the first through hole (110) has a circular outline on the first side surface (1001). The center of two adjacent first through holes (110) in the length direction of the fin (1) forms an isosceles triangle with the center of the rectangle; and / or, the opening portion (13) has a rectangular outline on the second side surface (1002), and the first through hole (110) has a circular outline on the second side surface (1002). The center of two adjacent first through holes (110) in the length direction of the fin (1) forms an isosceles triangle with the center of the rectangle.

9. The heat exchanger according to claim 5, characterized in that, The body portion (11) further includes a first protrusion (101), at least a portion of which is located between the first through hole (110) and the opening (13). The first protrusion (101) includes a first end (1011) and a second end (1012). In the use state, at least a portion of the first protrusion (101) is located above the opening (13). The first end (1011) of the first protrusion (101) is closer to the opening (13) than the second end (1012) of the first protrusion (101). The first protrusion (101) is inclined relative to the length of the fin (1). The maximum dimension of the opening (13) in the width direction of the fin (1) is W1. The maximum dimension of the first protrusion (101) in the width direction of the body portion (11) is W2, and W2 is greater than or equal to W1.

10. The heat exchanger according to any one of claims 1 to 4, characterized in that, A line parallel to the length direction of the body portion (11) and passing through the geometric center of the second through hole (120) is defined as a first line (301). The body portion also includes a second protrusion (102). The length of the second protrusion (102) is less than or equal to the equivalent diameter of the first through hole (110). In the use state, in the width direction of the fin (1), the second protrusion (102) includes a first end (1021) and a second end (1022). The first end (1021) of the second protrusion (102) is located on one side of the first line (301), and the second end (1022) of the second protrusion (102) is located on the other side of the first line (301). At least a portion of the second protrusion (102) is inclined relative to the length direction of the fin (1).

11. The heat exchanger according to claim 10, characterized in that, The first end (1021) of the second protrusion (102) is closer to the first through hole (110) relative to the second end (1022) of the second protrusion (102), and the first end of the second protrusion (102) is lower than the second end (1022) of the second protrusion (102) in the length direction of the fin (1); or, the second protrusion (102) further includes a first sub-protrusion (1023) and a second sub-protrusion (1024), the extension direction of the first sub-protrusion (1023) and the extension direction of the second sub-protrusion (1024) intersect.

12. The heat exchanger according to claim 6, characterized in that, The body portion (11) includes a second through hole (120), the edge of which is connected to the second flange (122). The maximum dimension of the second through hole (120) in the width direction of the body portion (11) is W3. The body portion (11) also includes a third protrusion (103), which is strip-shaped or arc-shaped. The third protrusion (103) is close to the second through hole (120) relative to the first through hole (110), and at least partially... The third protrusion (103) is located above the second through hole (120), and in the use state, at least part of the third protrusion (103) is located above the second through hole (120). The body part (11) also includes a second protrusion (102), which is inclined relative to the length direction of the fin (1). The maximum dimension of the third protrusion (103) in the width direction of the body part (11) is W4, and W4 is greater than or equal to W3.

13. The heat exchanger according to claim 12, characterized in that, The body portion (11) includes two or more annular protrusions (104), the annular protrusions (104) protruding outward on one side in the thickness direction of the body, and a third protrusion (103) is provided between two adjacent annular protrusions (104) in the length direction of the fin (1), one end of the third protrusion (103) is connected to one of the annular protrusions (104), and the other end of the third protrusion (103) is connected to another annular protrusion (104); and / or, the body portion (11) includes two or more annular protrusions (104), and a first recess (106) is provided between two adjacent annular protrusions (104) in the length direction of the fin (1), one end of the first recess (106) is connected to one of the annular protrusions (104), and the other end of the first recess (106) is connected to another annular protrusion (104).

14. The heat exchanger according to claim 1, characterized in that, The fin (1) includes a fifth protrusion (105) and a first recess (106). There are multiple fifth protrusions (105) and multiple fifth protrusions (105) are spaced apart in the width direction of the fin (1). There are multiple first recesses (106) and multiple first recesses (106) are spaced apart in the width direction of the fin (1). In the width direction of the fin (1), there is a first recess (106) between two adjacent fifth protrusions (105).

15. The heat exchanger according to claim 14, characterized in that, The maximum height of the fifth protrusion (105) is H1, 0.2 mm ≤ H1 ≤ 1.2 mm; and / or, the maximum height of the first recess (106) is H2, 0.2 mm ≤ H2 ≤ 1.2 mm.

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