Heat exchange fin and heat exchanger

Abstract

The utility model relates to the technical field of hot water supply equipment, and discloses a heat exchange fin and a heat exchanger. The heat exchange fin comprises a fin body, at least two heat exchange pipe holes are formed in the fin body, the heat exchange pipe holes are formed in the length direction of the fin body at intervals and extend in the width direction of the fin body, and turbulent flow holes are formed between every two adjacent heat exchange pipe holes. The first flanges of the heat exchange tube holes and the second flanges of the turbulent flow holes face the same face of the fin body, circulation channels are formed between the adjacent first flanges and second flanges, and the widths of the circulation channels are gradually reduced in the airflow flowing direction. The first blocking edge can effectively distribute high-temperature flue gas from the lower portion of the fin body, the width of the circulation channel is gradually reduced in the airflow flowing direction, the circulation speed of the flue gas in the circulation channel can be increased, the flue gas can fully heat the upper portion of the tube wall of the heat exchange tube, and the heat exchange efficiency of the heat exchange tube is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of hot water supply equipment, and in particular to a heat exchange fin and a heat exchanger. Background Technology

[0002] A heat exchanger, also known as a heat exchanger tube, is a device that transfers heat from a hot fluid to a cold fluid, thereby raising the temperature of the cold fluid to meet specified process requirements. The heat exchanger is a crucial component of a gas water heater, affecting key performance aspects such as heat exchange efficiency and outlet water temperature stability. A common heat exchanger structure is the plate heat exchanger, which utilizes the flow of high-temperature flue gas through heat exchange fins to raise the temperature of the heat exchange tubes.

[0003] In existing technologies, such as stainless steel heat exchangers, the low thermal conductivity and high thermal inertia of stainless steel material easily lead to heat concentration. Therefore, during operation, the tube walls near the high-temperature flue gas absorb more heat and have a higher temperature, while other parts of the heat exchange tube remain at a lower temperature. This results in a large temperature difference between different parts of the heat exchange tube, preventing the heat generated by the burner from being transferred to the water flow within the heat exchange tube in a timely manner, thus reducing heat exchange efficiency. Utility Model Content

[0004] The first technical problem solved by this utility model is to provide a heat exchange fin that can effectively solve the technical problem in the prior art where the temperature difference between different parts of the heat exchange tube is large, thus reducing the heat exchange efficiency.

[0005] The second technical problem solved by this utility model is to provide a heat exchanger that can effectively solve the technical problem in the prior art where the temperature difference between different parts of the heat exchange tube is large, thus reducing the heat exchange efficiency.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A heat exchange fin, comprising:

[0008] The fin body has at least two heat exchange tube holes, which are spaced apart along the length of the fin body and extend along the width of the fin body. A turbulence hole is provided between two adjacent heat exchange tube holes. A first baffle is provided around the outer periphery of the turbulence hole, and a second baffle is provided around the outer periphery of the heat exchange tube hole. The first baffle and the second baffle are located on the same side of the fin body, and a flow channel is formed between adjacent first baffles and second baffles. The width of the flow channel gradually decreases along the airflow direction.

[0009] Compared with the prior art, the heat exchange fins of this utility model have the following advantages: Taking a heat exchanger as an example, the fin body is installed on the heat exchanger, and the heat exchange tube is inserted into the corresponding heat exchange tube hole. When the heat exchanger is in use, the high-temperature flue gas flows from the bottom to the top of the fin body. Since the heat exchange tube hole is surrounded by a second baffle, and the second baffle contacts the heat exchange tube, the contact area between the heat exchange tube and the fin body is increased, so that the heat exchange tube can quickly absorb the heat of the fin body itself and improve the heat exchange efficiency.

[0010] Because the turbulence hole is surrounded by a first baffle, and the first baffle and the second baffle protrude toward the same side of the fin body, the first baffle and the second baffle form a flow channel for flue gas to flow. Therefore, the first baffle can effectively divert the high-temperature flue gas from below the fin body, allowing the high-temperature flue gas to enter the flow channel on both sides of the turbulence hole and exchange heat with the heat exchange tubes on both sides of the turbulence hole. At the same time, the width of the flow channel gradually decreases from the direction of airflow, which can accelerate the flow speed of flue gas in the flow channel, so that the flue gas can fully heat the upper part of the heat exchange tube wall. That is, the heat of the flue gas is more effectively and quickly absorbed by the upper part of the heat exchange tube wall, improving the uniformity of the tube wall temperature and thus improving the heat exchange efficiency of the heat exchange tube.

[0011] In one embodiment, the first stop includes a first arc-shaped stop, a second arc-shaped stop, and two inclined stopes connecting the first arc-shaped stop and the second arc-shaped stop. The second arc-shaped stop is disposed above the first arc-shaped stop and the diameter of the second arc-shaped stop is larger than the diameter of the first arc-shaped stop.

[0012] In one embodiment, the fin body is further provided with a plurality of first guide plates. Two first guide plates are spaced apart above the turbulence hole along the length direction of the fin body. The first guide plates and the flow channel are located on the same side of the fin body and above the outlet end of the flow channel. The two first guide plates corresponding to the turbulence hole are inclined away from each other from bottom to top.

[0013] In one embodiment, the two first guide plates corresponding to the turbulence hole are symmetrically arranged about the center line of the turbulence hole in the vertical direction.

[0014] In one embodiment, the fin body is further provided with two second guide plates, which are located on both sides of the fin body along its length and above the heat exchange tube hole. The inclination direction of each second guide plate is opposite to that of the adjacent first guide plate.

[0015] In one embodiment, the fin body has a plurality of spaced notches along its length, and one notch is provided between two adjacent heat exchange tube holes and the notch is located below the turbulence hole. Each notch extends to the lower sidewall of the fin body.

[0016] In one embodiment, the heat exchange tube holes are vertically arranged along the width direction of the fin body.

[0017] In one embodiment, the fin body has a third stop on each of its opposite sides along its length direction, the third stop extending along the width direction of the fin body, and the third stop and the first stop located on the same side of the fin body.

[0018] In one embodiment, along the vertical direction, at least two arc-shaped flue gas baffles are connected to the lower end of the fin body. The arc-shaped structure protrudes downward. The flue gas baffles and the flow channel are located on the same side of the fin body. The flue gas baffles are arranged in a one-to-one correspondence with the heat exchange tube holes. The flue gas baffles are located below the corresponding heat exchange tube holes.

[0019] The second technical problem mentioned above is solved by the following technical solution:

[0020] A heat exchanger, comprising:

[0021] Heat exchanger tubes;

[0022] The heat exchange fins are provided in multiple fin bodies, which are spaced apart. The heat exchange tubes are sequentially inserted through the heat exchange tube holes of the multiple fin bodies, and the outer wall of the heat exchange tubes abuts against the second baffle.

[0023] Compared with the prior art, the heat exchanger described in this utility model has the following advantages: the heat exchange tubes are sequentially inserted into the heat exchange tube holes of multiple finned bodies. As the width of the flow channel gradually decreases from the direction of airflow, the flow velocity of the flue gas in the flow channel can be accelerated, so that the flue gas can fully heat the area above the heat exchange tube holes, ensuring the uniform distribution of the flue gas on the entire finned body. This improves the uniformity of the tube wall temperature at various points of the heat exchange tube and avoids the problem of excessively high tube wall temperature near the high-temperature flue gas, which can cause vaporization noise and abnormal scaling inside the tube. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a heat exchange fin according to an embodiment of the present utility model;

[0026] Figure 2 This is a front view of a heat exchange fin according to an embodiment of the present utility model;

[0027] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0028] Figure 4 for Figure 2 The left view;

[0029] Figure 5 for Figure 2 The right view;

[0030] Figure 6 for Figure 2 A bottom view;

[0031] Figure 7 for Figure 2 Top view.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Fin body; 101. Heat exchange tube hole; 1011. Second baffle; 102. Turbulence hole; 1021. First baffle; 10211. First arc-shaped baffle; 10212. Second arc-shaped baffle; 10213. Inclined baffle; 103. Flow channel; 104. First guide plate; 105. Second guide plate; 106. Notch; 107. Flue gas baffle; 108. Third baffle. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0036] 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] In related technologies, the heat exchanger tubes near the high-temperature flue gas have a higher temperature due to greater heat absorption, while the temperature of other parts of the heat exchanger tubes is lower. This results in a large temperature difference between different parts of the heat exchanger tubes. The heat generated by the burner cannot be transferred to the water flow inside the heat exchanger tubes in time, leading to a higher temperature of the tube wall near the high-temperature flue gas. This, in turn, causes problems such as gasification noise and abnormal scaling inside the heat exchanger tubes, affecting the user experience.

[0039] To solve the above technical problems, the following will be combined with... Figures 1 to 7 The following describes embodiments of the present invention.

[0040] According to embodiments of the present invention, on the one hand, such as Figures 1 to 7 As shown, a heat exchange fin is provided for use in a heat exchanger, mainly to improve the uniformity of the tube wall temperature in the heat exchanger.

[0041] The heat exchange fin includes a heat exchange fin body 1, on which a plurality of heat exchange tube holes 101 and a plurality of turbulence holes 102 are spaced apart.

[0042] Specifically, such as Figure 1 and Figure 2As shown, multiple heat exchange tube holes 101 are spaced apart along the length of the heat exchange fin body 1, and the heat exchange tube holes 101 extend along the width of the fin body 1. Heat exchange tubes are suitable for installation within the heat exchange tube holes 101.

[0043] Specifically, such as Figure 1 and Figure 2 As shown, a turbulence hole 102 is provided between any two adjacent heat exchange tube holes 101. A first baffle 1021 is provided on the turbulence hole 102. The first baffle 1021 is arranged around the outer periphery of the opening of the turbulence hole 102 and extends toward one side of the fin body 1.

[0044] Specifically, such as Figures 1 to 3 As shown, each heat exchange tube hole 101 is provided with a second baffle 1011, which surrounds the outer periphery of the opening of the heat exchange tube hole 101, and the second baffle 1011 and the first baffle 1021 are located on the same side of the fin body 1. A flow channel 103 is formed between adjacent first baffles 1021 and second baffles 1011, and the flue gas is suitable for flowing along the direction of the flow channel 103. In particular, along the airflow direction, the width of the flow channel 103 gradually decreases from the bottom to the top of the fin body 1.

[0045] Taking a heat exchanger as an example, the heat exchange fin body 1 is installed on the heat exchanger, and the heat exchange tube is inserted into the corresponding heat exchange tube hole 101. When the heat exchanger is in use, the high-temperature flue gas flows from the bottom to the top of the fin body 1. Since the heat exchange tube hole 101 is provided with a second baffle 1011 around its opening, the second baffle 1011 contacts the heat exchange tube, thereby increasing the contact area between the heat exchange tube and the fin body 1, so that the heat exchange tube can quickly absorb the heat of the fin body 1 itself and improve the heat exchange efficiency.

[0046] Because the turbulence hole 102 is surrounded by a first baffle 1021, and the first baffle 1021 and the second baffle 1011 protrude toward the same side of the fin body 1, the first baffle 1021 and the second baffle 1011 form a flow channel 103 for flue gas to flow. Therefore, the first baffle 1021 can effectively divert the high-temperature flue gas from below the fin body 1, so that the flow channel 103 on both sides of the turbulence hole 102 exchanges heat with the heat exchange tubes on both sides of the turbulence hole 102. At the same time, along the airflow direction, the width of the flow channel 103 gradually narrows from the bottom to the top of the fin body 1, so as to accelerate the flue gas flow speed in the flow channel 103, so that the flue gas can fully heat the upper part of the heat exchange tube wall. That is, the heat of the flue gas is more effectively and quickly absorbed by the upper part of the heat exchange tube wall, improving the uniformity of the tube wall temperature and thus improving the heat exchange efficiency of the heat exchange tube.

[0047] Specifically, the fin body 1 can be made of stainless steel.

[0048] Specifically, the heat exchange tube hole 101 can be configured in any shape, such as an oblong hole, an elliptical hole, or a circular hole. In this embodiment, the shape of the heat exchange tube hole 101 is not specifically limited.

[0049] For example, the fin body 1 can be set as a rectangle, and the heat exchange tube hole 101 can be an oblong hole. Compared with a round hole, the oblong hole is more stable in shape and less prone to deformation. The oblong heat exchange tube hole 101 and the heat exchange tube have a larger heat exchange surface area, which can effectively increase the heat exchange efficiency.

[0050] Specifically, the turbulence hole 102 can be set in a conical shape, so that the width of the flow channel 103 gradually decreases from the bottom to the top of the fin body 1. The turbulence hole 102 can also be set in a trapezoidal shape, etc. In this embodiment, the shape of the turbulence hole 102 is not specifically limited.

[0051] In one embodiment, such as Figure 3 As shown, the first retaining edge 1021 includes a first arc-shaped retaining edge 10211, a second arc-shaped retaining edge 10212, and two inclined retaining edges 10213. The two inclined retaining edges 10213 connect the first arc-shaped retaining edge 10211 and the second arc-shaped retaining edge 10212 to form a sealing ring. The second arc-shaped retaining edge 10212 is located above the first arc-shaped retaining edge 10211, and the diameter of the second arc-shaped retaining edge 10212 is larger than the diameter of the first arc-shaped retaining edge 10211.

[0052] The first baffle 1021 is configured in the shape described above, making it approximately elliptical. According to the boundary layer theory of fluid mechanics, there is a layer of stationary fluid molecules near the fin body 1 and the heat exchange tube wall. A boundary layer exists near its surface. An increase in the thickness of the boundary layer will increase the thermal resistance of convective heat transfer and affect the heat transfer effect. Setting the first baffle 1021 in an approximately elliptical shape can increase the velocity gradient near the surface of the fin body 1, increase fluid disturbance, reduce the boundary layer thickness, further improve the heat transfer efficiency, and increase the convective heat transfer coefficient of the high-temperature flue gas. This significantly improves the overall heat transfer efficiency of the fin body 1, makes the temperature distribution of the fin body 1 more uniform, and reduces the temperature of the high-temperature area of ​​the fin body 1 and the flue gas temperature.

[0053] Specifically, the first flange 1021 can be formed by cutting and bending material on the fin body 1. Similarly, the second flange 1011 can also be formed by cutting and bending material on the fin body 1. In this embodiment, the processing method of the first flange 1021 and the second flange 1011 is not specifically limited.

[0054] Specifically, in combination Figure 2 and Figure 3As shown, from the bottom to the top of the fin body 1, the inclined baffle 10213 is inclined toward the adjacent second baffle 1011.

[0055] Specifically, the first guard edge 1021 can be configured as a symmetrical structure or an asymmetrical structure. In this embodiment, the shape of the first guard edge 1021 is not specifically limited.

[0056] In one embodiment, such as Figures 1 to 3 As shown, the fin body 1 is also provided with a plurality of first guide plates 104. Two first guide plates 104 are spaced apart above the turbulence holes 102 along the length direction of the fin body 1. The first guide plates 104 and the flow channel 103 are located on the same side of the fin body 1, and the first guide plates 104 are located above the outlet end of the flow channel 103. From the bottom to the top of the fin body 1, the two first guide plates 104 corresponding to the turbulence holes 102 are inclined away from each other from bottom to top.

[0057] The two first guide plates 104 above the turbulence hole 102 are spaced apart to form a dynamic turbulence zone. When the flue gas passes through, it will be further dispersed, increasing the contact opportunity between the flue gas and the surface of the fin body 1, thereby increasing the area and time of heat exchange and enhancing the heat exchange effect.

[0058] The two first guide plates 104 corresponding to each turbulence hole 102 are inclined away from each other from bottom to top, so that the flue gas from below is guided by the first guide plate 104, changing the flow direction of the flue gas and guiding the flue gas to the top of the heat exchange tube hole 101, thereby heating the top of the heat exchange tube, enhancing the heat exchange effect above the heat exchange tube, and thus improving the uniformity of the tube wall temperature at all parts of the heat exchange tube.

[0059] Specifically, the first guide plate 104 can be configured in any existing shape such as a strip, an arc, or a wave. In this embodiment, the shape of the first guide plate 104 is not specifically limited.

[0060] Specifically, the first guide plate 104 can be formed by cutting and bending material on the fin body 1. In this embodiment, the processing method of the first guide plate 104 is not specifically limited.

[0061] In one embodiment, such as Figures 1 to 3 As shown, the two first guide plates 104 corresponding to each turbulence hole 102 are symmetrically arranged about the center line of the turbulence hole 102 in the vertical direction.

[0062] The two symmetrically arranged first guide plates 104 can ensure that the flow path of the flue gas is uniformly guided when it passes above the turbulence hole 102, avoiding the flue gas from flowing to one side and ensuring the uniform distribution of the flue gas on the fin body 1, thereby improving the uniformity and efficiency of heat exchange, reducing local thermal stress concentration, and extending the service life of the heat exchange fins.

[0063] In one embodiment, such as Figure 1 and Figure 2 As shown, the fin body 1 is also provided with two second guide plates 105. Along the length direction of the fin body 1, the two second guide plates 105 are arranged on both sides of the fin body 1, and the two second guide plates 105 are arranged above the heat exchange tube hole 101. The inclination direction of each second guide plate 105 is opposite to that of the adjacent first guide plate 104.

[0064] By setting second guide plates 105 on both sides of the fin body 1, and since the second guide plates 105 are located above the heat exchange tube holes 101 on both sides of the fin body 1 and are inclined toward the corresponding heat exchange tube holes 101, the second guide plates 105 can guide the flue gas from below, thereby causing the flue gas to flow toward the heat exchange tube holes 101 on both sides of the fin body 1. This ensures that the flue gas can cover the entire surface of the heat exchange tube more evenly, especially the area above the heat exchange tube holes 101, thereby improving the heat exchange efficiency and uniformity.

[0065] Specifically, the shape of the second guide plate 105 can be set to be similar to that of the first guide plate 104. For example, both the second guide plate 105 and the first guide plate 104 are rectangular. The area of ​​the second guide plate 105 is smaller than that of the first guide plate 104. In this embodiment, the structure of the second guide plate 105 is not specifically limited.

[0066] In one embodiment, such as Figures 1 to 3 As shown, the fin body 1 has multiple notches 106, which are spaced apart along the length of the fin body 1. Among them, there is a notch 106 between two adjacent heat exchange tube holes 101, which is located below the turbulence hole 102, and each notch 106 extends to the lower sidewall of the fin body 1.

[0067] Setting multiple notches 106 on the fin body 1 can reduce the weight of the fin body 1, save costs, reduce the distance between the edge of the fin body 1 and the heat exchange tube, and allow the flowing water in the heat exchange tube to quickly remove the heat from the heat exchange fin body, reduce the area of ​​the high-temperature zone, extend the service life of the fin body 1, and make the temperature distribution of the fin body 1 more uniform.

[0068] Specifically, the notch 106 may be composed of multiple arcs. In this embodiment of the application, the shape of the notch 106 is not specifically limited.

[0069] In one embodiment, such as Figure 1 and Figure 2 As shown, the heat exchange tube hole 101 is vertically arranged along the width direction of the fin body 1.

[0070] The vertically arranged heat exchange tube holes 101 increase the contact area and time between the flue gas and the heat exchange tubes, thereby improving heat exchange efficiency. When the flue gas flows through the fin body 1, it can more fully surround the heat exchange tubes, ensuring uniform heat transfer.

[0071] The vertically arranged heat exchange tube holes 101 help enhance the connection stability between the heat exchange tubes and the fin body 1, reduce the displacement or deformation of the heat exchange tubes caused by high temperature and airflow impact, and ensure the long-term stable operation of the heat exchanger.

[0072] In one embodiment, such as Figure 1 and Figure 2 As shown, a third stop 108 is provided on each of the opposite sides of the fin body 1 along its length. The third stop 108 extends along the width direction of the fin body 1, and the third stop 108 and the first stop 1021 are located on the same surface of the fin body 1.

[0073] A third baffle 108 is provided on both sides of the fin body 1. Since the third baffle 108 and the first baffle 1021 are located on the same side of the fin body 1, the third baffle 108 can effectively prevent the flue gas from escaping the fin body 1 too quickly, thus reducing the efficiency of the heat exchanger. At the same time, the third baffle 108 increases the lateral support of the fin body 1, enhances the stability of the overall structure, reduces the deformation of the fin body 1 caused by high temperature and airflow impact, and ensures the long-term stable operation of the heat exchanger.

[0074] In one embodiment, such as Figures 1 to 2 As shown, along the vertical direction, the lower end of the fin body 1 is also connected to multiple arc-shaped flue gas baffles 107, with the arc-shaped structure protruding downwards. The flue gas baffles 107 and the flow channel 103 are located on the same side of the fin body 1, and the multiple flue gas baffles 107 are correspondingly arranged with multiple heat exchange tube holes 101, with the flue gas baffles 107 positioned below the corresponding heat exchange tube hole 101.

[0075] An arc-shaped flue gas baffle 107 is provided on the fin body 1 corresponding to the heat exchange tube hole 101. When the flue gas flows through the fin body 1, at least a portion of the high-temperature flue gas directly impacts the flue gas baffle 107 and is diverted to the left and right sides of the heat exchange tube hole 101 to exchange heat with the left and right sides of the heat exchange tube. This avoids the high-temperature flue gas directly impacting the tube wall of the heat exchange tube near the burner, thereby reducing the heat absorption of the tube wall near the high-temperature flue gas, improving the temperature uniformity of the tube wall at all points, and avoiding the problem of excessively high tube wall temperature near the high-temperature flue gas, which can cause gasification noise and abnormal scaling inside the tube.

[0076] Setting the flue gas baffle 107 to an arc shape can help to guide the high-temperature flue gas from below and reduce pressure loss.

[0077] Specifically, the flue gas baffle 107 is adapted to the arc-shaped hole wall, which can be understood as the arc-shaped orientation of the flue gas baffle 107 being the same as the orientation of the arc-shaped hole wall, ensuring that the flue gas is diverted to both sides of the heat exchange tube hole 101.

[0078] According to an embodiment of the present invention, on the other hand, as... Figures 1 to 7 As shown, a heat exchanger is also provided, including heat exchange tubes and heat exchange fins.

[0079] Specifically, multiple fin bodies 1 are provided, and the multiple fin bodies 1 are spaced apart. Heat exchange tubes are sequentially inserted through the heat exchange tube holes 101 of the multiple fin bodies 1, and the outer tube wall of the heat exchange tube abuts against the second baffle 1011.

[0080] In this heat exchanger, heat exchange tubes are sequentially inserted into heat exchange tube holes 101 of multiple finned bodies 1. Along the airflow direction, the width of the flow channel 103 gradually decreases from the bottom to the top of the finned body 1, which can accelerate the flow velocity of flue gas in the flow channel 103, so that the flue gas can fully heat the area above the heat exchange tube holes 101, ensuring the uniform distribution of flue gas on the entire finned body 1. This improves the uniformity of the tube wall temperature at various points of the heat exchange tube, and avoids the problem of excessively high tube wall temperature near the high-temperature flue gas, which can cause vaporization noise and abnormal scaling inside the tube.

[0081] The working principle of the heat exchanger in this embodiment is described as follows:

[0082] Multiple finned bodies 1 are spaced apart, and heat exchange tubes are sequentially inserted into the heat exchange tube holes 101 of the multiple finned bodies 1.

[0083] When using the heat exchanger, high-temperature flue gas flows from the bottom to the top of the finned body 1. As the flue gas flows through the finned body 1, at least a portion of the high-temperature flue gas directly impacts the flue gas baffle 107 and is diverted to the left and right sides of the heat exchange tube hole 101, where it exchanges heat with the second baffle 1011 on the left and right sides of the heat exchange tube. The heat exchange tube exchanges heat with the second baffle 1011, preventing the high-temperature flue gas from directly impacting the tube wall of the heat exchange tube near the burner, thus improving the temperature uniformity of the tube wall at various points.

[0084] Subsequently, the high-temperature flue gas flows to the turbulence hole 102. The first baffle 1021 can effectively divert the high-temperature flue gas from below the fin body 1, allowing the high-temperature flue gas to enter the flow channels 103 on both sides of the first baffle 1021, thereby contacting the heat exchange tubes on both sides of the first baffle 1021 and improving the heat exchange efficiency.

[0085] After the high-temperature flue gas enters the flow channel 103, the width of the flow channel 103 gradually decreases from the bottom to the top of the fin body 1, which can accelerate the flow speed of the flue gas in the flow channel 103, so that the flue gas can fully heat the top of the heat exchange tube hole 101, ensuring the uniform distribution of the flue gas on the entire fin body 1, thereby improving the uniformity of the tube wall temperature at various parts of the heat exchange tube.

[0086] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0087] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A heat exchange fin, characterized in that, include: The fin body (1) has at least two heat exchange tube holes (101) on it. The at least two heat exchange tube holes (101) are spaced apart along the length direction of the fin body (1) and extend along the width direction of the fin body (1). A turbulence hole (102) is provided between two adjacent heat exchange tube holes (101). A first baffle (1021) is provided around the outer periphery of the turbulence hole (102), and a second baffle (1011) is provided around the outer periphery of the heat exchange tube hole (101). The first baffle (1021) and the second baffle (1011) are located on the same side of the fin body (1). A flow channel (103) is formed between adjacent first baffles (1021) and second baffles (1011). The width of the flow channel (103) gradually decreases along the airflow direction.

2. The heat exchange fins according to claim 1, characterized in that: The first stop (1021) includes a first arc-shaped stop (10211), a second arc-shaped stop (10212), and two inclined stopes (10213) connecting the first arc-shaped stop (10211) and the second arc-shaped stop (10212). The second arc-shaped stop (10212) is located above the first arc-shaped stop (10211), and the diameter of the second arc-shaped stop (10212) is larger than the diameter of the first arc-shaped stop (10211).

3. The heat exchange fins according to claim 1, characterized in that: The fin body (1) is also provided with a plurality of first guide plates (104). Two first guide plates (104) are spaced apart above the turbulence hole (102) along the length direction of the fin body (1). The first guide plates (104) and the flow channel (103) are located on the same side of the fin body (1) and above the outlet end of the flow channel (103). The two first guide plates (104) corresponding to the turbulence hole (102) are inclined away from each other from bottom to top.

4. The heat exchange fins according to claim 3, characterized in that: The two first guide plates (104) corresponding to the turbulence hole (102) are symmetrically arranged about the center line in the vertical direction about the turbulence hole (102).

5. The heat exchange fins according to claim 3, characterized in that: The fin body (1) is also provided with two second guide plates (105). The two second guide plates (105) are located on both sides of the length direction of the fin body (1) and above the heat exchange tube hole (101). The inclination direction of each second guide plate (105) is opposite to that of the adjacent first guide plate (104).

6. The heat exchange fins according to claim 1, characterized in that: The fin body (1) has a plurality of notches (106) spaced apart along its length direction. A notch (106) is provided between two adjacent heat exchange tube holes (101) and the notch (106) is located below the turbulence hole (102). Each notch (106) extends to the lower side wall of the fin body (1).

7. The heat exchange fins according to claim 1, characterized in that: The heat exchange tube hole (101) is vertically arranged along the width direction of the fin body (1).

8. The heat exchange fins according to claim 1, characterized in that: The fin body (1) has a third stop (108) on each of its opposite sides along its length direction. The third stop (108) extends along the width direction of the fin body (1) and the third stop (108) and the first stop (1021) are located on the same side of the fin body (1).

9. The heat exchange fins according to any one of claims 1 to 8, characterized in that: Along the vertical direction, at least two arc-shaped flue gas baffles (107) are connected to the lower end of the fin body (1). The arc-shaped structure protrudes downward. The flue gas baffles (107) and the flow channel (103) are located on the same side of the fin body (1). The flue gas baffles (107) and the heat exchange tube holes (101) are arranged in a one-to-one correspondence. The flue gas baffles (107) are located below the corresponding heat exchange tube holes (101).

10. A heat exchanger, characterized in that, include: Heat exchanger tubes; According to any one of claims 1 to 9, the heat exchange fins are provided in a plurality of fin bodies (1), the plurality of fin bodies (1) are spaced apart, the heat exchange tubes are sequentially inserted through the heat exchange tube holes (101) of the plurality of fin bodies (1), and the outer tube wall of the heat exchange tubes abuts against the second baffle (1011).

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