Heat exchange device and fin

Abstract

The present invention relates to a heat exchange device and fins. Since the uppermost end of the first diversion side wall is disposed above the uppermost end of the installation through hole, the lowermost end of the first diversion side wall is disposed below the uppermost end of the installation through hole or the uppermost end of the first diversion side wall is flush with the uppermost end of the installation through hole. Moreover, since the distance from the first diversion side wall to the central axis of the installation through hole decreases along the flow direction of the high-temperature flue gas, the flow rate of the high-temperature flue gas remains unchanged or increases, thereby reducing the thickness of the boundary layer of the high-temperature flue gas at the heat exchange tube, so that the separation of the high-temperature flue gas from the heat exchange tube can be delayed, enabling the high-temperature flue gas to flow to the back of the heat exchange tube as much as possible or move as close as possible to the back of the heat exchange tube, and further enabling the high-temperature flue gas to exchange heat with the back of the heat exchange tube, that is, the high-temperature flue gas can exchange heat circumferentially with the heat exchange tube, improving the heat exchange efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange, and particularly to a heat exchange device and fins. Background Art

[0002] During the use of a gas water heater, high-temperature flue gas flows through fins and heat exchange tubes for heat exchange. On the one hand, the high-temperature flue gas directly transfers heat to the heat exchange tube to perform heat exchange with the heat exchange medium inside the heat exchange tube; on the other hand, the high-temperature flue gas transfers heat to the fins, and the fins then transfer the heat to the heat exchange tube, thereby performing heat exchange on the heat exchange medium inside the heat exchange tube. In traditional gas water heaters, most of the high-temperature flue gas can only come into contact with the windward surface of the heat exchange tube for heat exchange, and the back surface of the heat exchange tube cannot exchange heat with the high-temperature flue gas, resulting in low heat exchange efficiency. Summary of the Invention

[0003] The first technical problem to be solved by the present invention is to provide a kind of fin which can enable the high-temperature flue gas to come into contact with the circumference of the heat exchange tube for heat exchange, and has high heat exchange efficiency.

[0004] The second technical problem to be solved by the present invention is to provide a heat exchange device which can enable the high-temperature flue gas to come into contact with the circumference of the heat exchange tube for heat exchange, and has high heat exchange efficiency.

[0005] The above first technical problem is solved by the following technical solutions:

[0006] A kind of fin, comprising:

[0007] A fin body, the fin body is provided with a mounting surface and at least two mounting through holes arranged at intervals along the length direction;

[0008] A first guiding member, the first guiding member protrudes from the mounting surface, and one first guiding member is arranged between every two adjacent mounting through holes. The first guiding member is provided with a first guiding side wall corresponding to and spaced from the mounting through hole. Along the flowing direction of the high-temperature flue gas, the uppermost end of the first guiding side wall is arranged above the uppermost end of the mounting through hole or the uppermost end of the first guiding side wall is flush with the uppermost end of the mounting through hole, the lowermost end of the first guiding side wall is arranged below the uppermost end of the mounting through hole, and the distance from the first guiding side wall to the central axis of the mounting through hole decreases along the flowing direction of the high-temperature flue gas.

[0009] The fins of the present invention have the beneficial effects compared with the background art: When the high-temperature flue gas flows from below towards the fin body closer to the upper part, the high-temperature flue gas first comes into contact with the windward surface of the heat exchange tube for heat exchange. When the high-temperature flue gas continues to flow upward, under the guiding action of the first guiding side wall of the first guiding member, the high-temperature flue gas flows through the flow passage between the first guiding side wall and the outer side wall of the heat exchange tube. Since the uppermost end of the first guiding side wall is arranged above the uppermost end of the installation through hole, and the lowermost end of the first guiding side wall is arranged below the uppermost end of the installation through hole or the uppermost end of the first guiding side wall is flush with the uppermost end of the installation through hole, the high-temperature flue gas can flow to the back of the heat exchange tube through the flow passage. Moreover, since the distance from the first guiding side wall to the central axis of the installation through hole decreases along the flow direction of the high-temperature flue gas, the flow velocity of the high-temperature flue gas remains unchanged or increases, thereby reducing the thickness of the boundary layer of the high-temperature flue gas at the heat exchange tube, so as to delay the separation of the high-temperature flue gas from the heat exchange tube, enabling the high-temperature flue gas to flow to the back of the heat exchange tube as much as possible or approach the back of the heat exchange tube as much as possible, and further enabling the high-temperature flue gas to exchange heat with the back of the heat exchange tube, that is, the high-temperature flue gas can exchange heat with the circumference of the heat exchange tube, improving the heat exchange efficiency.

[0010] In one embodiment, the fin further includes at least two second guiding members protruding from the installation surface. At least two of the second guiding members are arranged at intervals relative to each other between two adjacent first guiding members. Along the flow direction of the high-temperature flue gas, the lowermost end of each second guiding member is arranged above the uppermost end of the first guiding side wall.

[0011] In one embodiment, the tangent line of the uppermost end of the first guiding side wall is tangent to the outer side wall of the corresponding second guiding member.

[0012] In one embodiment, two of the second guiding members are arranged at intervals relative to each other between two adjacent first guiding members, and the two second guiding members are symmetrically arranged with respect to the central plane in the vertical direction of the central axis of the installation through hole.

[0013] In one embodiment, each first guiding member is provided with two first guiding side walls arranged at intervals relative to each other and a second guiding side wall for connecting the two first guiding side walls. The two first guiding side walls in each first guiding member are respectively arranged corresponding to one installation through hole.

[0014] In one embodiment, along the flow direction of the high-temperature flue gas, at least two relatively spaced first flow spoilers are provided at the lower end of the fin body. Each first flow spoiler protrudes from the mounting surface. Between two adjacent mounting through-holes, there are two first flow spoilers arranged at a first gap and at an included angle, and the first gap is correspondingly arranged with the second flow guiding side wall.

[0015] In one embodiment, between two adjacent mounting through-holes, there are two first flow spoilers perpendicular to each other; and / or, a first hollowed-out groove is further provided at the lower end of the fin body.

[0016] In one embodiment, the fin further includes at least two spaced second flow spoilers. Each second flow spoiler protrudes from the mounting surface. Along the flow direction of the high-temperature flue gas, at least two second flow spoilers are arranged at intervals around the lower half of the mounting through-hole; and / or, the mounting surface is provided with a first flanging arranged circumferentially around the mounting through-hole.

[0017] In one embodiment, along the width direction of the fin body, a second flanging protruding from the mounting surface is provided on the side of the fin body; and / or, the first flow guiding member is provided with a second hollowed-out groove.

[0018] The above second technical problem is solved by the following technical solution:

[0019] A heat exchange device includes a heat exchange tube and the fin as described above, and the heat exchange tube is inserted into the mounting through-hole.

[0020] The beneficial effects of the heat exchange device of the present invention compared with the background technology: When the high-temperature flue gas flows, it can contact the heat exchange tube and the fin, so that the high-temperature flue gas can directly transfer heat to the heat exchange tube or indirectly transfer heat to the heat exchange tube through the fin. Among them, the high-temperature flue gas can contact the circumference of the heat exchange tube for heat exchange, and the heat exchange efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1It is a schematic diagram of the flow of existing high-temperature flue gas around the heat exchange tube;

[0024] Figure 2 It is a schematic diagram of the flow of high-temperature flue gas through the fins of an embodiment;

[0025] Figure 3 It is Figure 2 a schematic diagram of the structure of the fin from one perspective;

[0026] Figure 4 It is Figure 2 a schematic diagram of the structure of the fin from another perspective;

[0027] Figure 5 It is Figure 2 a schematic diagram of the structure of at least two overlapping fins;

[0028] Figure 6 It is Figure 2 a graph showing the relationship between the angle between two first turbulators of the fin and the heat exchange efficiency;

[0029] Figure 7 It is Figure 2 a graph showing the relationship between the angle between two first turbulators of the fin and the maximum temperature of the fin.

[0030] Reference numerals:

[0031] 10. Fin; 110. Fin body; 111. Mounting surface; 112. Mounting through-hole; 120. First deflector; 121. First deflector side wall; 122. Second deflector side wall; 123. Second hollowed-out groove; 130. Flow channel; 140. Second deflector; 150. Tangent line; 160. Central plane; 170. First turbulator; 171. First gap; 172. First hollowed-out groove; 180. Second turbulator; 191. First flanging; 192. Second flanging. Detailed Description of the Invention

[0032] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following detailed description of the specific embodiments of the present invention will be made in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0035] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0037] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0038] It should be explained that, for the convenience of explaining the relevant principles and structures of the embodiments of the present application, taking the flow direction of high-temperature flue gas (as shown by direction A in Figure 2 as flowing from bottom to top) as an example for illustration, it should not be construed as a limitation to the embodiments of the present application. In other embodiments, the flow direction of high-temperature flue gas can also be other directions according to actual situations.

[0039] In one embodiment, a heat exchange device is provided. Specifically, the heat exchange device includes a heat exchange tube (not shown) and fins 10, and the fins 10 are sleeved on the outer side wall of the heat exchange tube. In this way, when high-temperature flue gas flows through the heat exchange device, it can contact the heat exchange tube and the fins 10, so that the high-temperature flue gas can directly transfer heat to the heat exchange tube or indirectly transfer heat to the heat exchange tube through the fins 10. Among them, the high-temperature flue gas can be in circumferential contact with the heat exchange tube for heat exchange, and the heat exchange efficiency is high.

[0040] It should be noted that the heat exchange device can be a heat exchanger, a gas water heater or other devices capable of heat exchange.

[0041] In one embodiment, please refer to Figures 2 to 4 , the fins 10 include a fin body 110 and a first flow guide member 120.

[0042] Among them, please refer to Figures 2 to 4 , the fin body 110 is provided with a mounting surface 111 and at least two mounting through holes 112 spaced along the length direction (as shown by direction B in Figure 2 ). In this way, at least two heat exchange tubes are respectively inserted into the mounting through holes 112 of the fin body 110, so that the fin body 110 is sleeved on the outer side wall of the heat exchange tube. Preferably, the central axes of at least two mounting through holes 112 are on the same horizontal plane.

[0043] Among them, please refer to Figure 2 and Figure 4 , the first flow guide member 120 protrudes from the mounting surface 111. A first flow guide member 120 is provided between every two adjacent mounting through holes 112. The first flow guide member 120 is provided with a first flow guide side wall 121 corresponding to and spaced from the mounting through hole 112. Along the flow direction of the high-temperature flue gas (such asFigure 2 The uppermost end of the first guide side wall 121 is arranged above the uppermost end of the mounting through hole 112 or the uppermost end of the first guide side wall 121 is flush with the uppermost end of the mounting through hole 112 (as shown in the A direction). Figure 4 As shown, when the uppermost end of the first guide side wall 121 is arranged above the uppermost end of the mounting through hole 112, the uppermost end of the first guide side wall 121 is arranged above the dotted line D; when the uppermost end of the first guide side wall 121 is flush with the uppermost end of the mounting through hole 112, the uppermost end of the first guide side wall 121 is arranged on the dotted line D), the lowermost end of the first guide side wall 121 is arranged below the uppermost end of the mounting through hole 112, and the distance from the first guide side wall 121 to the central axis of the mounting through hole 112 decreases along the high-temperature flue gas flow direction (such as Figure 2 and Figure 4 As shown, L1 is greater than L2).

[0044] In the fin 10 of the above embodiment, when the high-temperature flue gas flows from the bottom to the fin body 110 near the top, the high-temperature flue gas first contacts the windward surface of the heat exchange tube to exchange heat. When the high-temperature flue gas continues to flow upward, under the guiding effect of the first guide side wall 121 of the first guide member 120, the high-temperature flue gas flows along the flow channel 130 between the first guide side wall 121 and the outer wall of the heat exchange tube. Since the uppermost end of the first guide side wall 121 is arranged above the uppermost end of the installation through hole 112 or the uppermost end of the first guide side wall 121 is flush with the uppermost end of the installation through hole 112 in the horizontal direction, the lowermost end of the first guide side wall 121 is arranged below the uppermost end of the installation through hole 112, so that the high-temperature flue gas can flow to the back of the heat exchange tube through the flow channel 130. Furthermore, since the distance from the first guide side wall 121 to the central axis of the mounting through hole 112 decreases along the flow direction of the high-temperature flue gas, the flow velocity of the high-temperature flue gas remains unchanged or increases, thereby reducing the thickness of the boundary layer of the high-temperature flue gas at the heat exchange tube, thereby delaying the separation of the high-temperature flue gas from the heat exchange tube, allowing the high-temperature flue gas to flow to the back of the heat exchange tube as much as possible or to move as close to the back of the heat exchange tube as possible, thereby allowing the high-temperature flue gas to exchange heat with the back of the heat exchange tube, that is, the high-temperature flue gas can exchange heat with the circumference of the heat exchange tube, thereby improving the heat exchange efficiency.

[0045] In addition, in order to improve the heat exchange efficiency, the conventional method also provides a flow disturbance component on the fin body 110 to enhance the disturbance of the high-temperature flue gas, thereby prolonging the heat exchange time between the high-temperature flue gas and the fin body 110 and the heat exchange tube, thereby improving the heat exchange efficiency. However, the conventional method will lead to incomplete combustion of the gas, resulting in a high concentration of harmful gases emitted. The fin 10 of the above embodiment allows the high-temperature flue gas to flow smoothly, with low wind resistance, so that the gas can be fully burned, and the concentration of harmful gases emitted is low or no harmful gases are emitted.

[0046] When the fin 10 of the above embodiment is used in a heat exchange device with the same heat load and the same mass, the heat exchange efficiency can be effectively increased by 1.5% - 2%. In the case of the same heat exchange efficiency, the water tank using the fin 10 of the above embodiment can reduce the number of fins 10 (it can reduce by 3 to 5 pieces), reducing the usage cost. In the case of the same usage cost, the heat exchange device using the above fin 10 has a high heat exchange efficiency, strong product reliability, and also saves materials.

[0047] It should be noted that the first flow guide member 120 can be integrally formed with the fin body 110, or can be separately formed and then assembled and connected by welding or other means.

[0048] Among them, the contour of the first flow guide side wall 121 can be arc-shaped or straight, preferably arc-shaped, so that the high-temperature flue gas flows more smoothly, and thus the high-temperature flue gas can flow better to the back of the heat exchange tube.

[0049] Among them, the windward side of the heat exchange tube refers to the side of the heat exchange tube facing the high-temperature flue gas, and the back side refers to the other side opposite to the windward side.

[0050] Among them, the uppermost end of the installation through hole 112 refers to the farthest end of the inner side wall of the installation through hole 112 in the flowing direction of the high-temperature flue gas.

[0051] Among them, the vertical distance between the uppermost end of the first flow guide side wall 121 and the uppermost end of the installation through hole 112 can be flexibly selected according to the actual usage situation. Similarly, the vertical distance between the lowermost end of the first flow guide side wall 121 and the uppermost end of the installation through hole 112 can also be flexibly selected according to the actual usage situation, as long as it satisfies that the flow channel 130 can guide the high-temperature flue gas towards the back of the heat exchange tube.

[0052] Please refer to Figure 1 , in the prior art, the high-temperature flue gas exchanges heat with the fin body 110 during the flowing process, thereby reducing the flow velocity of the high-temperature flue gas, and further increasing the boundary layer thickness between the high-temperature flue gas and the heat exchange tube. The increase in the boundary layer thickness of the high-temperature flue gas will cause the separation phenomenon between the high-temperature flue gas and the outer side wall of the heat exchange tube to occur earlier, thereby increasing the wake region, and further preventing the high-temperature flue gas from contacting the back of the heat exchange tube. For the fin 10 of the above embodiment, since the distance from the first flow guide side wall 121 to the central axis of the installation through hole 112 decreases along the flowing direction of the high-temperature flue gas, the flow velocity of the high-temperature flue gas remains unchanged or continuously increases during the flowing process in the flow channel 130, reducing the boundary layer thickness between the high-temperature flue gas and the heat exchange tube, and further delaying the separation phenomenon between the high-temperature flue gas and the outer side wall of the heat exchange tube, thereby reducing the wake region until it disappears, and further enabling the high-temperature flue gas to contact the back of the heat exchange tube for heat exchange.

[0053] Optionally, please refer to Figures 2 to 5 , the fin 10 further includes at least two second flow guiding members 140 protruding from the mounting surface 111. Specifically, the second flow guiding member 140 can be in the shape of a convex hull, a cylinder, a block, or other structures, as long as it can guide and divide the high-temperature flue gas; and the second flow guiding member 140 can be integrally formed with the fin body 110, or can be separately formed and then assembled and connected by welding or other means. Among them, at least two second flow guiding members 140 are arranged at intervals between two adjacent first flow guiding members 120. And, along the flowing direction of the high-temperature flue gas, the lowermost end of each second flow guiding member 140 is arranged above the uppermost end of the first flow guiding side wall 121. In this way, when the high-temperature flue gas flows along the flow channel 130 to the back of the heat exchange tube and continues to flow upward, under the guiding action of the two relatively spaced second flow guiding members 140, the high-temperature flue gas can further converge towards the middle part of the heat exchange tube (as shown in the figure), so that the high-temperature flue gas can better contact the back of the heat exchange tube for heat exchange.

[0054] Furthermore, please refer to Figure 2 and Figure 4 , the tangent line 150 of the uppermost end of the first flow guiding side wall 121 is tangent to the outer side wall of the corresponding second flow guiding member 140. In this way, the high-temperature flue gas can smoothly flow into the back of the heat exchange tube under the guiding action of the first flow guiding side wall 121, and the high-temperature flue gas guided out from the uppermost end of the first flow guiding side wall 121 converges towards the middle part of the heat exchange tube, so that the high-temperature flue gas can better contact the back of the heat exchange tube.

[0055] Among them, the second flow guiding member 140 corresponding to the first flow guiding side wall 121 refers to the second flow guiding member 140 on the same side as the first flow guiding side wall 121 with the middle part of the heat exchange tube (i.e., the central plane 160 of the central axis of the mounting through hole 112 in the vertical direction) as the boundary. For example, the first flow guiding side wall 121 and the second flow guiding member 140 on the left side of the middle part of the heat exchange tube correspond to each other; the first flow guiding side wall 121 and the second flow guiding member 140 on the right side of the middle part of the heat exchange tube correspond to each other.

[0056] Optionally, please refer to Figure 2 and Figure 5, there are two relatively spaced second flow guiding members 140 provided between two adjacent first flow guiding members 120. Moreover, the two second flow guiding members 140 are symmetrically arranged with respect to the central plane 160 in the vertical direction of the central axis of the mounting through hole 112. In this way, the high-temperature flue gas flowing out from the flow channels 130 on both sides of the heat exchange tube can better approach the back surface of the heat exchange tube, further enhancing the heat exchange efficiency between the high-temperature flue gas and the back surface of the heat exchange tube. Of course, combined with the tangent line 150 at the uppermost end of the first flow guiding side wall 121 being tangent to the outer side wall of the corresponding second flow guiding member 140, the high-temperature flue gas can be better guided to the back surface of the heat exchange tube, and the effect of improving the heat exchange efficiency is better.

[0057] Optionally, please refer to Figures 2 to 4 , each first flow guiding member 120 is provided with two relatively spaced first flow guiding side walls 121 and a second flow guiding side wall 122 for connecting the two first flow guiding side walls 121. The two first flow guiding side walls 121 in each first flow guiding member 120 are respectively arranged corresponding to one mounting through hole 112. In this way, there is a first flow guiding side wall 121 on each side of the first flow guiding member 120. When the first flow guiding member 120 is arranged between two adjacent mounting through holes 112, each first flow guiding side wall 121 corresponds to one mounting through hole 112. After the heat exchange tube is inserted into the mounting through hole 112, the two first flow guiding side walls 121 on one first flow guiding member 120 can form a flow channel 130 with the outer side wall of the corresponding heat exchange tube, so that the high-temperature flue gas can be guided to the back surfaces of the two heat exchange tubes by using the first flow guiding member 120 for heat exchange with the back surfaces of the heat exchange tubes. Moreover, the high-temperature flue gas is diverted into the two flow channels 130 by using the second flow guiding side wall 122, which is beneficial to the high-temperature flue gas flowing into the back surfaces of the heat exchange tubes. Among them, the contour shape of the second flow guiding side wall 122 is preferably arc-shaped, which has a good effect on guiding and diverting the high-temperature flue gas and makes the high-temperature flue gas flow more smoothly.

[0058] Furthermore, please refer to Figures 2 to 4 , along the flowing direction of the high-temperature flue gas, at least two relatively spaced first flow disturbing members 170 are provided at the lower end of the fin body 110, and each first flow disturbing member 170 protrudes from the mounting surface 111. In this way, the high-temperature flue gas flowing towards the fin body 110 and the heat exchange tube can be dispersed by using the first flow disturbing members 170 provided at the lower end of the fin body 110, so that the high-temperature flue gas can better contact the fin body 110 and the heat exchange tube for heat exchange. Specifically, please refer to Figures 2 to 4, two first spoilers 170 are provided between two adjacent mounting through holes 112, which are arranged in a first gap 171 and at an angle, and the first gap 171 is arranged corresponding to the second flow-guiding side wall 122. In this way, the high-temperature flue gas flowing toward the two mounting through holes 112 moves toward the first gap 171 and flows toward the second flow-guiding side wall 122 under the guiding effect of the two first spoilers 170, and under the guiding and diverting effect of the second flow-guiding side wall 122, the high-temperature flue gas flowing out of the first gap 171 flows into the flow channels 130 on both sides of the first flow-guiding member 120 and finally flows into the back of the heat exchange tube.

[0059] The first spoiler 170 may be in the form of a spoiler sheet, a spoiler block, etc. The first spoiler 170 may be integrally formed with the fin body 110 or may be separately formed and then assembled and connected by welding, etc. When the first spoiler 170 is integrally formed with the fin body 110, the first spoiler 170 may be formed into a flanged shape by bending the lower end of the fin body 110.

[0060] The two first spoilers 170 are arranged at an angle with each other, and the specific angle (eg Figure 4 The degree can be flexibly designed or adjusted according to the actual use situation, which can be greater than or equal to 0° and less than or equal to 90°. Figure 6 The change of the angle between the two first spoilers 170 will have a corresponding effect on the heat exchange efficiency; please refer to Figure 7 The change of the angle between the two first spoilers 170 will have a corresponding impact on the maximum temperature of the fin 10. Therefore, α can be flexibly designed or adjusted according to actual heat exchange requirements.

[0061] Optionally, two mutually perpendicular first spoilers 170 are provided between two adjacent mounting through holes 112. In this way, the high-temperature flue gas can be better guided to the back of the heat exchange tube, so that the heat exchange efficiency between the high-temperature flue gas and the heat exchange tube is the highest (the heat exchange efficiency can reach 91.34%), and the temperature of the bottom end of the fin body 110 will not be too high. Of course, in other embodiments, the angle between the two first spoilers 170 can also be 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°.

[0062] In one embodiment, please refer to Figure 4, a first hollow groove 172 is further provided at the lower end of the fin body 110. In this way, by providing the first hollow groove 172, not only can the weight of the fin body 110 be reduced and the material cost be saved, but also it can be ensured that the lower end of the fin body 110 far from the heat exchange tube will not be burned due to local high temperature, thereby extending the service life. Among them, the first hollow groove 172 can be obtained by cutting or slicing the lower end of the fin body 110. The specific contour shape of the first hollow groove 172 can be flexibly designed or adjusted according to actual heat exchange requirements.

[0063] Optionally, please refer to Figures 2 to 4 , the fin 10 further includes at least two second turbulators 180 arranged at intervals. Each second turbulator 180 protrudes from the mounting surface 111. And, along the flow direction of the high-temperature flue gas, at least two second turbulators 180 are arranged at intervals around the lower half of the mounting through-hole 112. In this way, by arranging the second turbulators 180 below the windward side of the heat exchange tube, the disturbance of the high-temperature flue gas can be enhanced. Not only can the velocity boundary layer and temperature boundary layer of the high-temperature flue gas at the heat exchange tube be broken, the local turbulence degree be strengthened, so that the high-temperature flue gas can flow to the back of the heat exchange tube, but also the heat exchange area between the high-temperature flue gas and the windward side of the heat exchange tube is increased, making the high-temperature flue gas contact the heat exchange tube and the fin body 110 more fully and the heat exchange more sufficient.

[0064] Among them, the second turbulator 180 can be in the form of a turbulator convex hull, a turbulator column, etc. The second turbulator 180 can be integrally formed with the fin body 110 or separately formed and then assembled and connected by welding or other means. The number of the second turbulators 180 can be flexibly designed or adjusted according to actual heat exchange requirements. For example, it can be four, six, eight or more. The lower half of the mounting through-hole 112 refers to the part corresponding to the windward side of the heat exchange tube.

[0065] In one embodiment, please refer to Figures 2 to 4 , six second turbulators 180 are arranged around the lower half of each mounting through-hole 112. The six second turbulators 180 are evenly spaced around the central axis of the heat exchange mounting through-hole 112 and symmetrically arranged about the central plane 160 of the central axis of the mounting through-hole 112 in the vertical direction, so that local turbulence occurs on both sides of the heat exchange tube, the heat exchange on both sides is uniform, and the heat exchange efficiency is high.

[0066] In order to ensure that the heat exchange tube can be stably and reliably inserted into the mounting through-hole 112, optionally, please refer to Figure 3, the mounting surface 111 is provided with a first flange 191 which is arranged circumferentially around the mounting through hole 112. In this way, after the heat exchange tube passes through the mounting through hole 112, the first flange 191 is sleeved on the outer wall of the heat exchange tube, which increases the contact area between the fin body 110 and the heat exchange tube, not only enabling the fin body 110 to better exchange heat with the heat exchange tube and improving the heat exchange efficiency, but also making the assembly of the heat exchange tube and the fin body 110 more stable and reliable, without relative movement or shaking. Among them, the first flange 191 can be integrally formed with the fin body 110 or separately formed and then assembled and connected by welding or other methods.

[0067] During the use of the fin 10, at least two fin bodies 110 need to be overlapped so that the mounting through holes 112 of each fin body 110 are connected to each other to form a heat exchange channel, and then the heat exchange tube is inserted into the heat exchange channel. In order to ensure that the high-temperature flue gas can fully contact each fin body 110, in one embodiment, please refer to Figure 3 and Figure 5 , along the width direction of the fin body 110 (such as Figure 2 The side of the fin body 110 is provided with a second flange 192 protruding from the mounting surface 111. In this way, when the two fin bodies 110 are overlapped, the two second flanges 192 are used to make the two fin bodies 110 relatively spaced apart, thereby reserving a space that is connected up and down and closed left and right for the high-temperature flue gas to circulate, ensuring that the high-temperature flue gas can fully exchange heat with the fin body 110 and the heat exchange tube, and also allowing the high-temperature flue gas to be discharged smoothly, and also isolating the high-temperature flue gas from the surface of the water tank, which can reduce the surface temperature rise of the front and rear surfaces of the water tank. Among them, the second flange 192 can be integrally formed with the fin body 110 or assembled and connected by welding or other methods after being formed separately.

[0068] In addition, in order to reduce the mass of the fin 10, in one embodiment, please refer to Figures 2 to 4 , the first guide member 120 is provided with a second hollow groove 123. In this way, the second hollow groove 123 is processed on the first guide member 120 by stamping or shearing, which can reduce the weight of the fin 10. In addition, in the actual processing process, the second hollow groove 123 can be processed at a suitable position of the fin body 110, and then the first guide side wall 121 can be processed by bending or other methods.

[0069] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A fin, characterized in that, Comprising: A fin body (110) provided with an installation surface (111) and at least two installation through holes (112) spaced apart along the length direction; A first flow guiding member (120) protruding from the installation surface (111). One first flow guiding member (120) is provided between adjacent two of the installation through holes (112). The first flow guiding member (120) is provided with a first flow guiding side wall (121) corresponding to and spaced from the installation through hole (112). Along the flowing direction of the high-temperature flue gas, the uppermost end of the first flow guiding side wall (121) is located above the uppermost end of the installation through hole (112) or the uppermost end of the first flow guiding side wall (121) is flush with the uppermost end of the installation through hole (112), the lowermost end of the first flow guiding side wall (121) is located below the uppermost end of the installation through hole (112), and the distance from the first flow guiding side wall (121) to the central axis of the installation through hole (112) decreases along the flowing direction of the high-temperature flue gas; The fin further comprises at least two second flow guiding members (140) protruding from the installation surface (111). At least two second flow guiding members (140) are relatively spaced between adjacent two of the first flow guiding members (120). Along the flowing direction of the high-temperature flue gas, the lowermost end of each second flow guiding member (140) is located above the uppermost end of the first flow guiding side wall (121); the contour of the first flow guiding side wall (121) is arc-shaped, and the tangent line (150) of the uppermost end of the first flow guiding side wall (121) is tangent to the outer side wall of the corresponding second flow guiding member (140).

2. The fin according to claim 1, wherein The second flow guiding member (140) is in a convex bump shape, cylindrical shape or block shape.

3. The fin according to claim 1, wherein, Two relatively spaced second flow guiding members (140) are provided between adjacent two of the first flow guiding members (120), and the two second flow guiding members (140) are symmetrically arranged about the central plane (160) in the vertical direction of the central axis of the installation through hole (112).

4. The fin according to claim 1, characterized in that, Each first flow guiding member (120) is provided with two relatively spaced first flow guiding side walls (121) and a second flow guiding side wall (122) for connecting the two first flow guiding side walls (121). The two first flow guiding side walls (121) in each first flow guiding member (120) are respectively arranged corresponding to one installation through hole (112).

5. The fin according to claim 4, wherein, Along the flowing direction of the high-temperature flue gas, at least two relatively spaced first flow disturbing members (170) are provided at the lower end of the fin body (110). Each first flow disturbing member (170) protrudes from the installation surface (111). Two first flow disturbing members (170) arranged with a first gap (171) and at an angle are provided between adjacent two of the installation through holes (112), and the first gap (171) is arranged corresponding to the second flow guiding side wall (122).

6. The fin according to claim 5, wherein Two mutually perpendicular first spoiler members (170) are provided between two adjacent installation through holes (112).

7. The fin according to claim 5, wherein A first hollow-out groove (172) is further provided at the lower end of the fin body (110).

8. The fin according to any one of claims 1 to 7, characterized in that, The fin further includes at least two second spoiler members (180) arranged at intervals, each of the second spoiler members (180) protruding from the installation surface (111), and along the high-temperature flue gas flow direction, at least two of the second spoiler members (180) are arranged at intervals around the lower half of the installation through hole (112); and / or, a first flanging (191) arranged circumferentially around the installation through hole (112) is provided on the installation surface (111).

9. The fin according to any one of claims 1 to 7, characterized in that, Along the width direction of the fin body (110), a second flanging (192) protruding from the installation surface (111) is provided on the side of the fin body (110); and / or, a second hollow-out groove (123) is provided on the first flow guiding member (120).

10. A heat exchange device, characterized in that, It includes a heat exchange tube and the fin (10) according to any one of claims 1 to 9, and the heat exchange tube is inserted into the installation through hole (112).

Images