Heat exchange fins, heat exchangers and water heaters

Abstract

The utility model provides a kind of heat exchange fin, heat exchanger and water heater.The heat exchange fin includes substrate and multiple upstream tube holes and multiple downstream tube holes respectively located in the upstream region and downstream region of substrate;First spoiler and second spoiler are sequentially provided between two adjacent downstream tube holes along flow direction, and the inside of first spoiler and the inside of second spoiler are both hollow region, the outer diameter of second spoiler is less than the outer diameter of first spoiler, and the opposite ends of first spoiler along vertical direction are respectively provided with first gap and second gap, and first gap is located the upstream of second gap along flow direction.By setting the specific structure of first spoiler and second spoiler, the contact area of heat exchange fin and flue gas can be increased, thereby increasing the heat exchange capacity and improving the heat exchange efficiency, and by setting the inside of first spoiler and the inside of second spoiler as hollow region, the heat exchange fin can be effectively lightened, material is saved, thereby improving the heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to a heat exchange fin, a heat exchanger, and a water heater. Background Technology

[0002] In existing technologies, heat exchange fins are the core heat exchange components of gas water heaters, and the efficiency of the heat exchange fins determines the efficiency of the entire unit.

[0003] Improving the heat exchange efficiency of heat exchange fins is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned defects of the prior art and provide a heat exchange fin, a heat exchanger, and a water heater.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A heat exchange fin, characterized in that the heat exchange fin includes a substrate, the substrate includes an upstream region and a downstream region in a vertical direction, the heat exchange fin also includes a plurality of upstream pipe holes spaced apart in the upstream region in a horizontal direction and a plurality of downstream pipe holes in the downstream region, the upstream pipe holes and the downstream pipe holes are arranged alternately, and the upstream pipe holes and the downstream pipe holes are arranged in parallel to each other;

[0007] A first turbulence ring and a second turbulence ring are sequentially arranged between two adjacent downstream pipe holes along the flow direction. Both the first turbulence ring and the second turbulence ring are hollow areas. The outer diameter of the second turbulence ring is smaller than the outer diameter of the first turbulence ring. The first turbulence ring has a first notch and a second notch respectively at its two opposite ends along the vertical direction. The first notch is located upstream of the second notch along the flow direction.

[0008] In this technical solution, by vertically arranging a first and a second turbulence ring between two adjacent downstream pipe holes, and by specifying the structure for arranging the first and second turbulence rings, the contact area between the heat exchange fins and the flue gas can be increased, thereby increasing the heat exchange capacity and improving the heat exchange efficiency. Furthermore, by setting both the first and second turbulence rings to be hollow areas, the weight of the heat exchange fins can be effectively reduced, saving materials and thus improving the heat exchange efficiency. The flue gas enters the hollow area within the first turbulence ring through the first notch along the flow direction and then flows out through the second notch, thus maximizing the utilization of the hollow area within the first turbulence ring, increasing the contact surface area, thereby increasing the heat exchange capacity and further improving the heat exchange efficiency.

[0009] Preferably, the number of downstream orifices is less than the number of upstream orifices, and the horizontal dimension of the downstream region is less than the dimension of the upstream region;

[0010] The substrate includes two sides disposed opposite to each other along the horizontal direction. The sides are provided with a first flange, a second flange, and a third flange connected in sequence. The first flange corresponds to the upstream region, the third flange corresponds to the downstream region, and the second flange is disposed obliquely toward the center line of the horizontal direction of the substrate.

[0011] In this technical solution, by setting the number of downstream pipe holes to be less than the number of upstream pipe holes, and by setting the horizontal dimension of the downstream region to be smaller than the dimension of the upstream region, the heat exchange is more balanced, thus effectively improving the heat exchange efficiency. By sequentially setting a first flange, a second flange, and a third flange on two horizontally opposite sides of the substrate, the overall flow channel of the flue gas can be effectively constrained.

[0012] Preferably, a third and a fourth turbulence ring are provided between the outermost downstream pipe hole and the side along the horizontal direction and along the flow direction. The third and fourth turbulence rings are hollow areas, and the outer diameter of the fourth turbulence ring is smaller than the outer diameter of the third turbulence ring.

[0013] In this technical solution, by setting the specific structures of the third and fourth turbulence rings, the contact area between the heat exchange fins and the flue gas can be increased, thereby increasing the heat exchange capacity and improving the heat exchange efficiency. Furthermore, by setting both the first and second turbulence rings to be hollow areas, the weight of the heat exchange fins can be effectively reduced, saving materials and thus improving the heat exchange efficiency.

[0014] Preferably, the third flange has a third notch at the position of the fourth spoiler ring along the vertical direction.

[0015] In this technical solution, by setting a third notch, the flue gas entering between the fourth turbulence ring and the third flange can be discharged from the third notch, thereby avoiding uneven temperature caused by the narrowing of the flow channel at this position, which would affect the heat exchange effect.

[0016] Preferably, a first row of baffles and a second row of baffles are spaced apart on the surface of the substrate along the flow direction. The first row of baffles includes a plurality of spaced first baffles along the horizontal direction. The first baffles are located between the upstream pipe hole and the downstream pipe hole along the vertical direction.

[0017] The second row of baffles includes a plurality of spaced second baffles along the horizontal direction, and the second baffles are located along the vertical direction between the downstream hole and the downstream edge of the substrate extending along the horizontal direction.

[0018] In this technical solution, by setting up a first row of baffles and a second row of baffles, the flow direction of the flue gas can be effectively changed, that is, the flow direction of the flue gas is changed, so that the flue gas can be bypassed, thereby increasing the contact area between the heat exchange fins and the flue gas, and achieving the technical effect of improving heat exchange efficiency.

[0019] Preferably, the substrate includes a downstream edge extending in a horizontal direction. Along the flow direction, the downstream edge is located downstream of the downstream orifice. The downstream edge has a recessed portion, which is disposed corresponding to the second turbulence ring and is recessed toward the second turbulence ring. The recessed portion has a fourth flange.

[0020] In this technical solution, by setting a recessed portion closer to the second turbulence ring, the path of the flue gas can be increased, thereby increasing the heat exchange area. By setting a fourth flange in the recessed portion, the flue gas can be directed to flow around the heat exchange tube located in the downstream pipe hole as much as possible, instead of flowing directly between two adjacent downstream pipe holes, thus avoiding heat loss.

[0021] Preferably, a fourth notch is provided on the fourth flange;

[0022] Along the vertical direction, the first notch, the second notch, and the fourth notch are aligned sequentially, and the first notch, the second notch, and the fourth notch have the same size.

[0023] In this technical solution, by setting a fourth notch aligned with the first and second notches along the height direction, the flue gas can be made to detour in order to flow out through the fourth notch, thereby effectively increasing the heat exchange area and thus effectively increasing the heat exchange capacity.

[0024] Preferably, the edges of the upstream pipe holes are provided with upstream pipe hole flanges; and / or, the edges of the downstream pipe holes are provided with downstream pipe hole flanges.

[0025] In this technical solution, by setting an upstream pipe hole flange at the edge of the upstream pipe hole and a downstream pipe hole flange at the edge of the downstream pipe hole, the heat exchange area can be effectively increased, thereby effectively increasing the heat exchange capacity.

[0026] A heat exchanger is characterized in that it includes heat exchange tubes and a plurality of heat exchange fins as described above, wherein the heat exchange tubes are connected in series in the downstream or upstream tube holes of the plurality of heat exchange fins.

[0027] A water heater characterized in that it includes a heat exchanger as described above.

[0028] The positive and progressive effects of this utility model are as follows:

[0029] By vertically arranging a first turbulence ring and a second turbulence ring between two adjacent downstream pipe holes, and by setting the specific structure of the first turbulence ring and the second turbulence ring, the contact area between the heat exchange fins and the flue gas can be increased, thereby increasing the heat exchange capacity and improving the heat exchange efficiency. Furthermore, by setting both the first turbulence ring and the second turbulence ring to be hollow areas, the weight of the heat exchange fins can be effectively reduced, saving materials and thus improving the heat exchange efficiency. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the heat exchange fins of a preferred embodiment of the present invention.

[0031] Figure 2 This is a front view structural diagram of the heat exchange fins of a preferred embodiment of the present invention.

[0032] Figure 3 for Figure 2 A magnified schematic diagram of part A in the middle.

[0033] Figure 4 for Figure 2 A magnified schematic diagram of part B in the middle section.

[0034] Figure 5 This is a schematic diagram (a) of the flue gas flow direction of the heat exchange fins in a preferred embodiment of the present invention.

[0035] Figure 6 This is a schematic diagram (II) of the flue gas flow direction of the heat exchange fins in a preferred embodiment of the present invention.

[0036] Figure 7 This is a schematic diagram showing the flue gas flow direction of a heat exchange fin for comparison.

[0037] Explanation of reference numerals in the attached figures

[0038] Heat exchange fin 1

[0039] Substrate 10

[0040] Side 11

[0041] First flip 111

[0042] Second flip 112

[0043] Third flip 113

[0044] The third gap 114

[0045] Downstream edge 12

[0046] Recess 121

[0047] Fourth flip 122

[0048] Fourth gap 123

[0049] Upstream pipe hole 20

[0050] Upstream pipe flange 21

[0051] Downstream orifice 30

[0052] Downstream pipe flange 31

[0053] First spoiler ring 41

[0054] First gap 411

[0055] Second gap 412

[0056] Second spoiler ring 42

[0057] Third spoiler ring 43

[0058] Fourth spoiler ring 44

[0059] First row baffle 50

[0060] First baffle 51

[0061] Second row baffle 60

[0062] Second baffle 61

[0063] Third baffle 70

[0064] Vertical direction H

[0065] Flow direction F

[0066] Horizontal direction L Detailed Implementation

[0067] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0068] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

[0069] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0070] 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 one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0071] like Figures 1 to 6 As shown, this embodiment provides a heat exchange fin 1, which includes a substrate 10. The substrate 10 includes an upstream region and a downstream region along the vertical direction H. The heat exchange fin 1 also includes a plurality of upstream pipe holes 20 spaced apart along the horizontal direction L in the upstream region and a plurality of downstream pipe holes 30 spaced apart in the downstream region. The upstream pipe holes 20 and the downstream pipe holes 30 are arranged alternately, and the upstream pipe holes 20 and the downstream pipe holes 30 are arranged in parallel.

[0072] A first turbulence ring 41 and a second turbulence ring 42 are sequentially arranged between two adjacent downstream pipe holes 30 along the flow direction F. Both the first turbulence ring 41 and the second turbulence ring 42 are hollow areas. The outer diameter of the second turbulence ring 42 is smaller than the outer diameter of the first turbulence ring 41. The first turbulence ring 41 has a first notch 411 and a second notch 412 respectively at opposite ends along the vertical direction H. The first notch 411 is located upstream of the second notch 412 along the flow direction F.

[0073] In this way, by providing a first turbulence ring 41 and a second turbulence ring 42 along the vertical direction H between two adjacent downstream pipe holes 30, and by specifying the structure of the first turbulence ring 41 and the second turbulence ring 42, the contact area between the heat exchange fins 1 and the flue gas can be increased, thereby increasing the heat exchange capacity and improving the heat exchange efficiency. Furthermore, by setting both the first turbulence ring 41 and the second turbulence ring 42 to be hollow areas, the weight of the heat exchange fins 1 can be effectively reduced, saving materials and thus improving the heat exchange efficiency. After the flue gas enters the hollow area of ​​the first turbulence ring 41 from the first notch 411 along the flow direction F, it flows out from the second notch 412, thereby making greater use of the area of ​​the hollow area of ​​the first turbulence ring 41, increasing the contact surface, thereby increasing the heat exchange capacity and further improving the heat exchange efficiency.

[0074] It should be noted that, due to process limitations, the distance between two adjacent downstream pipe holes 30 cannot be too small, otherwise it would be difficult to manufacture. This would cause the flue gas to flow directly between the two adjacent heat exchange tubes, resulting in heat waste. In this embodiment, the space between two adjacent downstream pipe holes 30 is effectively utilized to set the specific structure of the first turbulence ring 41 and the second turbulence ring 42, thereby greatly improving the heat exchange efficiency. The vertical direction H is the height direction of the heat exchange fin 1, and the horizontal direction L is the length direction of the heat exchange fin 1.

[0075] The number of downstream orifices 30 is less than the number of upstream orifices 20, and the horizontal dimension L of the downstream region is smaller than the dimension of the upstream region. By setting the number of downstream orifices 30 to be less than the number of upstream orifices 20, and the horizontal dimension L of the downstream region to be smaller than the dimension of the upstream region, heat exchange is more balanced, effectively improving heat exchange efficiency.

[0076] The substrate 10 includes two sides 11 arranged opposite each other along the horizontal direction L. Each side 11 has a first flange 111, a second flange 112, and a third flange 113 connected in sequence. The first flange 111 corresponds to the upstream region, and the third flange 113 corresponds to the downstream region. The second flange 112 is obliquely arranged towards the centerline of the horizontal direction L of the substrate 10. Thus, by including two sides 11 arranged opposite each other along the horizontal direction L on the substrate 10 and sequentially providing the first flange 111, the second flange 112, and the third flange 113, the overall flow path of the flue gas can be effectively constrained.

[0077] Along the horizontal direction L, between the outermost downstream pipe hole 30 and the side 11, a third turbulence ring 43 and a fourth turbulence ring 44 are also provided along the flow direction F. Both the third turbulence ring 43 and the fourth turbulence ring 44 are hollow areas, and the outer diameter of the fourth turbulence ring 44 is smaller than that of the third turbulence ring 43. Thus, by setting the specific structure of the third turbulence ring 43 and the fourth turbulence ring 44, the contact area between the heat exchange fins 1 and the flue gas can be increased, thereby increasing the heat exchange capacity and improving the heat exchange efficiency. Furthermore, by setting the first turbulence ring 41 and the second turbulence ring 42 to be hollow areas, the weight of the heat exchange fins 1 can be effectively reduced, saving materials and thus improving the heat exchange efficiency.

[0078] Preferably, the third flange 113 has a third notch 114 at a position in the vertical direction H corresponding to the fourth turbulence ring 44. In this way, by setting the third notch 114, the flue gas entering between the fourth turbulence ring 44 and the third flange 113 can be discharged from the third notch 114, thereby avoiding uneven temperature caused by the narrowing of the flow channel at this position, which would affect the heat exchange effect.

[0079] Preferably, a first row of baffles 50 and a second row of baffles 60 are also provided at intervals along the flow direction F on the surface of the substrate 10. The first row of baffles 50 includes a plurality of spaced first baffles 51 along the horizontal direction L, and the first baffles 51 are located between the upstream pipe hole 20 and the downstream pipe hole 30 along the vertical direction H.

[0080] The second row of baffles 60 includes a plurality of spaced second baffles 61 along the horizontal direction L. The second baffles 61 are located in the vertical direction H between the downstream hole 30 and the downstream edge 12 of the substrate 10 extending along the horizontal direction L.

[0081] In this way, by setting the first row of baffles 50 and the second row of baffles 60, the flow direction F of the flue gas can be effectively changed, that is, the flow direction of the flue gas is changed, so that the flue gas can be bypassed, thereby increasing the contact area between the heat exchange fins 1 and the flue gas, and achieving the technical effect of improving heat exchange efficiency.

[0082] The heat exchange fin 1 also includes a third baffle 70, which is located between the upstream pipe hole 20 and the second flange 112 to change the flow direction F of the flue gas, increase the contact area between the heat exchange fin 1 and the flue gas, and achieve the technical effect of improving the heat exchange efficiency.

[0083] The substrate 10 includes a downstream edge 12 extending in the horizontal direction L. Along the flow direction F, the downstream edge 12 is located downstream of the downstream pipe hole 30. The downstream edge 12 has a recessed portion 121, which corresponds to and is recessed towards the second turbulence ring 42. The recessed portion 121 also has a fourth flange 122. By providing the fourth flange 122 in the recessed portion 121, the flue gas is directed to flow around the heat exchange tubes located in the downstream pipe hole 30 as much as possible, preventing it from flowing directly between two adjacent downstream pipe holes 30 and thus avoiding heat loss. By providing the recessed portion 121 that is recessed towards the second turbulence ring 42, the flue gas travel path is increased, thereby increasing the heat exchange area.

[0084] Preferably, a fourth notch 123 is provided on the fourth flange 122; along the vertical direction H, the first notch 411, the second notch 412, and the fourth notch 123 are aligned sequentially, and the dimensions of the first notch 411, the second notch 412, and the fourth notch 123 are the same. In this way, by setting the fourth notch 123 aligned with the first notch 411 and the second notch 412 along the height direction, the flue gas can be made to detour in order to flow out through the fourth notch 123, thereby effectively increasing the heat exchange area and thus effectively increasing the heat exchange capacity.

[0085] Preferably, the edges of the upstream pipe holes 20 are provided with upstream pipe hole flanges 21. The edges of the downstream pipe holes 30 are provided with downstream pipe hole flanges 31. By providing upstream pipe hole flanges 21 at the edges of the upstream pipe holes 20 and downstream pipe hole flanges 31 at the edges of the downstream pipe holes 30, the heat exchange area can be effectively increased, thereby effectively increasing the heat exchange capacity.

[0086] The heat exchange fins 1 in this embodiment are divided into a first region, a second region, a third region, and a fourth region from left to right along the horizontal direction L. Since the heat exchange fins 1 are centrally symmetrical along the horizontal direction L, the flow of flue gas is consistent in the first and fourth regions, and consistent in the second and third regions.

[0087] The flow pattern of flue gas in the first zone is as follows Figure 5As shown, the flue gas flows around the heat exchange tube in the upstream pipe hole 20 and contacts the upstream pipe hole flange 21; the flue gas on the left flows to the third baffle 70 and contacts the third baffle 70, and is divided into two paths. The left side contacts the back of the second flange 112 and the third baffle 70, and the right side contacts the upper left part of the upstream pipe hole flange 21 and the front of the third baffle 70; the flue gas around the right side of the upstream pipe hole flange 21 faces the first baffle 51 and is split. The airflow on the left side of the first baffle 51 merges with the airflow on the right side of the third baffle 70 and flows around the third turbulence ring 43 from the bottom. The airflow on the right side of the first baffle 51 flows past the third turbulence ring 43 and the outside of the downstream pipe hole 30; all the airflow in the first region flows around the heat exchange tube in the downstream pipe hole 30 for heat exchange; when passing the fourth turbulence ring 44, it is split again and flows around the second baffle 61 for heat exchange. Throughout the process, the airflow undergoes numerous diversions and bypasses. By increasing the contact area with the baffles and flanges, the residence time of the high-temperature flue gas is effectively increased, thereby enhancing heat exchange and improving the heat exchange efficiency of the fins.

[0088] The flow pattern of flue gas in the second zone is as follows Figure 6 As shown, high-temperature flue gas flows around the heat exchange tubes in the upstream pipe hole 20, directly impacting the first baffles 51 located on both sides of the upstream pipe hole 20, and then splitting. After splitting, the airflow on both sides flows around the heat exchange tubes in the downstream pipe hole 30 and the first turbulence ring 41. Part of the flue gas passes through the first gap 411 and the second gap 412 of the first turbulence ring 41, disturbing the second turbulence ring 42 in all directions, and then impacts the fourth flange 122, flowing out from the fourth gap 123 of the fourth flange 122. The remaining flue gas continues to flow around the heat exchange tubes in the downstream pipe holes 30 on both sides, and directly impacts the second baffles 61 located on both sides of the second turbulence ring 42, and then flows out in a split flow. In the whole process, the airflow undergoes a large number of split flows, which effectively increases the residence time of the high-temperature flue gas by increasing the contact area with the baffles and flanges, thereby enhancing heat exchange and improving the heat exchange efficiency of the fins.

[0089] To make a relative comparison, such as Figure 7 In the comparative example shown, if the first turbulence ring 41 does not have a first notch and a second notch, the flue gas contact area will be greatly reduced, and the flue gas will not be effectively utilized.

[0090] This embodiment also provides a heat exchanger, which includes heat exchange tubes and a plurality of heat exchange fins 1 as described above. The heat exchange tubes are connected in series in the downstream tube holes 30 or the upstream tube holes 20 of the plurality of heat exchange fins 1.

[0091] This embodiment also provides a water heater, which includes the heat exchanger described above.

[0092] This water heater can be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the water heater to perform corresponding operations, thereby realizing intelligent control of the water heater and improving the user experience.

[0093] This embodiment, by providing a first turbulence ring 41 and a second turbulence ring 42 along the vertical direction H between two adjacent downstream pipe holes 30, and by providing a specific structure for setting the first turbulence ring 41 and the second turbulence ring 42, can increase the contact area between the heat exchange fins 1 and the flue gas, thereby increasing the heat exchange capacity and improving the heat exchange efficiency. Furthermore, by setting both the first turbulence ring 41 and the second turbulence ring 42 to be hollow areas, the weight of the heat exchange fins 1 can be effectively reduced, saving materials and thus improving the heat exchange efficiency.

[0094] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A heat exchange fin, characterized in that, The heat exchange fins include a substrate, which includes an upstream region and a downstream region in a vertical direction. The heat exchange fins also include a plurality of upstream pipe holes spaced apart in the upstream region and a plurality of downstream pipe holes in the downstream region in a horizontal direction. The upstream pipe holes and the downstream pipe holes are arranged alternately, and the upstream pipe holes and the downstream pipe holes are arranged in parallel to each other. A first turbulence ring and a second turbulence ring are sequentially arranged between two adjacent downstream pipe holes along the flow direction. Both the first turbulence ring and the second turbulence ring are hollow areas. The outer diameter of the second turbulence ring is smaller than the outer diameter of the first turbulence ring. The first turbulence ring has a first notch and a second notch respectively at its two opposite ends along the vertical direction. The first notch is located upstream of the second notch along the flow direction.

2. The heat exchange fins as described in claim 1, characterized in that, The number of downstream pipe holes is less than the number of upstream pipe holes, and the horizontal dimension of the downstream region is less than the dimension of the upstream region; The substrate includes two sides disposed opposite to each other along the horizontal direction. The sides are provided with a first flange, a second flange, and a third flange connected in sequence. The first flange corresponds to the upstream region, the third flange corresponds to the downstream region, and the second flange is disposed obliquely toward the center line of the horizontal direction of the substrate.

3. The heat exchange fins as described in claim 2, characterized in that, Between the outermost downstream pipe hole and the side along the horizontal direction, a third and a fourth turbulence ring are also provided along the flow direction. The third and fourth turbulence rings are both hollow areas, and the outer diameter of the fourth turbulence ring is smaller than the outer diameter of the third turbulence ring.

4. The heat exchange fins as described in claim 3, characterized in that, The third flange has a third notch along the vertical direction corresponding to the position of the fourth spoiler ring.

5. The heat exchange fins as described in claim 1, characterized in that, The substrate surface is further provided with a first row of baffles and a second row of baffles at intervals along the flow direction. The first row of baffles includes a plurality of spaced first baffles along the horizontal direction. The first baffles are located between the upstream pipe hole and the downstream pipe hole along the vertical direction. The second row of baffles includes a plurality of spaced second baffles along the horizontal direction, and the second baffles are located along the vertical direction between the downstream hole and the downstream edge of the substrate extending along the horizontal direction.

6. The heat exchange fins as described in claim 1, characterized in that, The substrate includes a downstream edge extending in a horizontal direction. Along the flow direction, the downstream edge is located downstream of the downstream pipe hole. The downstream edge has a recessed portion, which is disposed corresponding to the second turbulence ring and is recessed towards the second turbulence ring. The recessed portion has a fourth flange.

7. The heat exchange fins as described in claim 6, characterized in that, A fourth notch is provided on the fourth flange; Along the vertical direction, the first notch, the second notch, and the fourth notch are aligned sequentially, and the first notch, the second notch, and the fourth notch have the same size.

8. The heat exchange fins as described in any one of claims 1-7, characterized in that, The edges of the upstream pipe holes are provided with upstream pipe hole flanges; and / or, the edges of the downstream pipe holes are provided with downstream pipe hole flanges.

9. A heat exchanger, characterized in that, The heat exchanger includes heat exchange tubes and a plurality of heat exchange fins as described in any one of claims 1-8, wherein the heat exchange tubes are connected in series in the downstream or upstream tube holes of the plurality of heat exchange fins.

10. A water heater, characterized in that, The water heater includes the heat exchanger as described in claim 9.

Images