Finned tube heat exchanger

Abstract

The utility model discloses a finned tube heat exchanger, relates to the field of finned tube heat exchangers, and can solve the problem that in the prior art, after a finned tube heat exchanger treats hot wastewater rich in substances such as calcium ions and magnesium ions for a long time, a large amount of scale attached to the tube wall of the heat exchanger remains in the finned tube heat exchanger, and the heat exchange efficiency of the finned tube heat exchanger is seriously affected. When water flow enters the heat exchange tube component, the water flow firstly passes through the speed increasing component in the straight tube, the speed increasing component can generate pressure difference in the inner diameter of the straight tube, the flow speed of the water flow is increased through the pressure difference, and then the flow mixing component is driven to rotate. Water flow can be effectively stirred through rotation of the flow mixing component, and the possibility that substances such as calcium ions and magnesium ions in the water flow are combined with carbonate in water to form incrustation is reduced. And when the scale needs to be removed, the flow mixing component can also ensure that the injected ablating agent or grinding material and the sewage are uniformly mixed in the heat exchange tube component, so that the efficient scale removing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of fin tube heat exchangers, in particular to a fin tube heat exchanger. Background Art

[0002] As an efficient heat transfer device, fin-tube heat exchangers have been widely used in the fields of power, chemical industry, petrochemical industry, air conditioning engineering and refrigeration engineering. There are various types of fin tubes, mainly including integral fin tubes, welded fin tubes, high-frequency welded fin tubes and mechanically connected fin tubes. In the current industrial field, in order to realize the recovery and reuse of heat in hot wastewater and improve resource utilization efficiency, fin-tube heat exchangers are widely used. Through the effective heat exchange and reuse of heat, they provide sustainable energy solutions for industrial production.

[0003] After an in-depth analysis of existing fin-tube heat exchangers for industrial hot wastewater, we found that although such heat exchangers can effectively extract heat from hot wastewater and heat gas, thereby promoting the recovery and reuse of heat resources, when fin-tube heat exchangers treat hot wastewater rich in calcium, magnesium ions and other substances for a long time, these ions are easy to combine with carbonate in the water to form scale, which is then deposited on the inner wall of the long tube of the heat exchanger. Such scale not only seriously hinders the heat exchange efficiency of the fin-tube heat exchanger, but also leads to a decrease in its overall performance. Utility Model Content

[0004] In order to solve the problem in the prior art that after the fin-tube heat exchanger has treated hot wastewater rich in substances such as calcium and magnesium ions for a long time, a large amount of scale attached to the tube wall of the heat exchanger remains inside, which seriously affects the heat exchange efficiency of the fin-tube heat exchanger, the present application proposes a fin-tube heat exchanger to solve the above problem.

[0005] In order to achieve the above purpose, the technical solution adopted in this application is:

[0006] A fin-tube heat exchanger comprises a fin component, a heat exchange tube component and a flow mixing component, wherein the fin component surrounds the heat exchange tube component;

[0007] The heat exchange tube component comprises a plurality of straight tubes and a plurality of curved tubes, and the heat exchange tube component as a whole is composed of a plurality of the straight tubes and a plurality of the curved tubes connected end to end;

[0008] A plurality of the flow mixing components are provided and are respectively arranged in the tube cavities of the curved tubes.

[0009] As a further improvement of the present invention, the connection between the straight tube and the curved tube is fixedly connected by welding.

[0010] As a further improvement of the present invention, the flow mixing component is a first flow mixer, which includes a first fixed column, a first fixed seat and a first blade. The first fixed seat is rotatably sleeved on the outer wall of the column body of the first fixed column, and the first blades are arranged in a circular array on the outer wall of the seat body of the first fixed seat. The first fixed column is vertically arranged and welded inside the tube cavity of the curved tube.

[0011] As a further improvement of the utility model, the connection between the straight tube and the curved tube is fixed by screwing a flange and a screw.

[0012] As a further improvement of the present invention, the flow mixing component is a second flow mixer, which includes a fixing ring, a second fixing column, a second fixing seat and a second blade. The second fixing column is vertically connected to the inner wall of the fixing ring, the second fixing seat is rotatably sleeved on the outer wall of the column body of the second fixing column, the second blades are arranged in a circular array on the outer wall of the seat body of the second fixing seat, and a second boss is vertically symmetrically arranged on the outer wall of the fixing ring. A first groove is vertically symmetrically opened in the inner cavity of the curved tube close to the flange, and a first clamping groove is symmetrically opened along the vertical direction of the first groove. The fixing ring is clamped in the first groove, and the second bosses are respectively clamped in the first clamping grooves.

[0013] As a further improvement of the present invention, a speed increasing component for increasing the water flow velocity is further provided in the tube cavity of the straight tube close to the second flow mixer.

[0014] As a further improvement of the present invention, the speed increasing component is a speed increasing pipe diameter section, which includes a first part and a second part. The inner diameter of the first part gradually decreases along the downstream direction of the water flow, and the inner diameter of the second part gradually increases along the downstream direction of the water flow. The first part is smoothly connected to the second part.

[0015] As a further improvement of the present invention, the speed increasing component is a speed increasing diverter, which includes a first outer ring, a second outer ring, a first connecting plate, a second connecting plate and a spindle-shaped diverter column, the two ends of the diverter column are respectively connected to the end faces of the first connecting plate and the second connecting plate, the first connecting plate and the second connecting plate are respectively fixed inside the first outer ring and the second outer ring, the diameter of the first outer ring is larger than that of the second outer ring, and the second outer ring has the same inner tube diameter as the straight tube, and a first boss is vertically symmetrically arranged on the outer wall of the first outer ring, a second groove is vertically symmetrically opened in the inner cavity of the straight tube close to the flange, and a second clamping groove is symmetrically opened along the vertical direction of the second groove, the first outer ring is clamped inside the second groove, and the first bosses are respectively clamped inside the second clamping grooves.

[0016] As a further improvement of the utility model, the ports of the straight tube at the upper and lower ends of the heat exchange tube component are outlet pipes and inlet pipes respectively, and the inlet pipe is also provided with a solenoid valve for adjusting the flow rate.

[0017] As a further improvement of the present invention, the fin component includes fin plates, which are fixedly connected to the outer wall of the heat exchange tube component and arranged in rows, and the end surfaces of the fin plates are also provided with flow holes in rows.

[0018] Compared with the prior art, the technical solution provided by the utility model has the following advantages and effects:

[0019] 1. The mixing component in the present application is arranged in the tube cavity at the connection between the straight tube and the curved tube, aiming to optimize the water flow state and prevent scale formation. When the water flow enters the heat exchange tube component, it first passes through the speed increasing component in the straight tube, which can generate a pressure difference in the inner diameter of the straight tube, increase the flow rate of the water flow through the pressure difference, and then drive the mixing component to rotate. The rotation of the mixing component can effectively stir the water flow and reduce the possibility of calcium, magnesium ions and other substances in the water flow combining with carbonate ions in the water to form scale. In addition, after the mixing component is used for a long time in the fin tube heat exchanger, if the scale needs to be removed, a specific ablative agent or abrasive can be added to the heat exchange tube component. Subsequently, the mixing component will play its stirring and mixing role to ensure that the injected ablative agent or abrasive is evenly mixed with the sewage in the heat exchange tube component to achieve an efficient scale removal effect. After the ablative agent or abrasive is evenly mixed with the sewage, the continuous stirring of the mixing component will ensure that these cleaning substances can fully act on the scale on the tube wall. After a period of cyclic stirring, the scale is gradually decomposed by the ablative agent or ground by the abrasive, thus being effectively removed. At the same time, the rotation of the mixing component also promotes the uniform distribution of water flow in the tube cavity, avoiding the accumulation of water flow in local areas, and further reducing the possibility of scale formation. This design not only improves the heat exchange efficiency of the heat exchange tube components, but also extends their service life and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 It is an axonometric schematic diagram of the utility model.

[0022] Figure 2 It is an axonometric schematic diagram of the utility model from another angle.

[0023] Figure 3 It is a main schematic diagram of the utility model.

[0024] Figure 4 It is a left side schematic diagram of the utility model.

[0025] Figure 5 It is a cross-sectional schematic diagram of Example 2 of the present utility model.

[0026] Figure 6 yes Figure 5 A partial enlarged view of area A in the middle.

[0027] Figure 7 yes Figure 5 A partial enlarged view of area B in the middle.

[0028] Figure 8 It is an axonometric schematic diagram of the first mixer in the utility model.

[0029] Fig. 9 It is a cross-sectional schematic diagram of Example 3 and Example 4 of the present utility model.

[0030] Fig.10 yes Fig. 9 A partial enlarged view of area C in the middle.

[0031] Fig.11 It is an axonometric schematic diagram of the second flow mixer in the utility model.

[0032] Fig.12 It is a cross-sectional schematic diagram of Example 5 of the present utility model.

[0033] Fig.13 yes Fig.12 A partial enlarged view of area D in the middle.

[0034] Fig.14 It is an axonometric schematic diagram of the speed increasing diverter in the utility model.

[0035] In the figure: 10, solenoid valve; 20, fin component; 210, fin plate; 220, flow hole; 30, heat exchange tube component; 310, straight tube; 3110, outlet tube; 3120, inlet tube; 3130, speed-increasing tube diameter section; 3131, first part; 3132, second part; 3140, speed-increasing flow divider; 3141, first outer ring; 3142, second outer ring; 3143, first connecting plate; 3144, second connecting plate; 3145, flow divider column; 3146, first boss; 320, curved tube; 40, first mixer; 410, first fixing column; 420, first fixing seat; 430, first blade; 50, screw; 60, second mixer; 610, fixing ring; 620, second fixing column; 630, second fixing seat; 640, second blade; 650, second boss. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0040] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] Embodiment 1:

[0043] In conjunction with the instruction manual Figure 1-Figure 14 A fin-tube heat exchanger shown includes a fin component 20, a heat exchange tube component 30 and a flow mixing component, wherein the fin component 20 surrounds the heat exchange tube component 30;

[0044] The heat exchange tube component 30 includes a plurality of straight tubes 310 and a plurality of curved tubes 320. The heat exchange tube component 30 as a whole is composed of a plurality of straight tubes 310 and a plurality of curved tubes 320 connected end to end.

[0045] There are multiple flow mixing components, which are respectively arranged in the tube cavity of the curved tube 320.

[0046] It is explained that the fin component 20, as the main surrounding structure of the equipment, not only effectively enhances the structural strength of the equipment, but also significantly improves the heat exchange efficiency. The fin component 20 is made of any one of stainless steel, copper and aluminum, has good thermal conductivity and corrosion resistance, and can operate stably in various harsh environments for a long time. The design of the fin component 20 also takes air circulation into consideration. Through reasonable layout and spacing, the air can flow smoothly through the fin gap and fully contact with the heat exchange tube component 30 to achieve efficient heat exchange.

[0047] Specifically, the heat exchange tube component 30 adopts a combination of a straight tube 310 and a curved tube 320. The straight tube 310 has a simple structure and low flow resistance, which is conducive to the smooth flow of the fluid; while the curved tube 320 can realize the redirection of the fluid, so that the fluid can be evenly distributed in various areas of the fin component 20, further improving the heat exchange efficiency. The heat exchange tube component 30 is made of high-quality stainless steel material as a whole, with excellent high temperature resistance, high pressure resistance and corrosion resistance, which can ensure the stability and reliability of the equipment under long-term high-load operation.

[0048] It is worth noting that the mixing component is arranged in the tube cavity of the curved tube 320, which can effectively guide the flow direction of the fluid in the tube cavity, so that the fluid can be more strongly mixed and disturbed when flowing through the curved tube 320. This not only enhances the heat exchange effect of the fluid, but also helps to prevent the accumulation and blockage of the fluid in the tube cavity, thereby improving the stability and durability of the heat exchanger.

[0049] It is further worth explaining that the ports of the straight tube 310 at the upper and lower ends of the heat exchange tube component 30 are the outlet tube 3110 and the inlet tube 3120 respectively. The tube body of the inlet tube 3120 is also provided with a solenoid valve 10 for adjusting the flow rate. The fin component 20 includes a fin plate 210, which is fixedly connected to the outer wall of the heat exchange tube component 30 and arranged in rows. The end face of the fin plate 210 is also provided with flow holes 220 in rows. In summary, the heat exchange tube component 30 and the fin component 20 together constitute an efficient heat exchange structure. During the heat exchange process, the inlet tube 3120 is responsible for introducing the heat medium to be exchanged, passing through the flow path in the straight tube 310, and finally discharged from the outlet tube 3110 to complete a heat exchange cycle. Among them, the design of the solenoid valve 10 on the inlet tube 3120 provides great convenience for adjusting the flow rate. According to actual needs, the user can control the flow of the heat medium in the inlet pipe 3120 by adjusting the opening of the solenoid valve 10, thereby achieving precise control of the heat exchange efficiency. This design not only improves the flexibility of the equipment, but also makes the entire heat exchange process more stable and reliable.

[0050] In addition, the flow holes 220 arranged in a row on the end surface of the fin plate 210 can, on the one hand, further increase the contact area between the fin plate 210 and the heat exchange medium and improve the heat exchange efficiency; on the other hand, the flow holes 220 can also serve as a circulation channel for hot air, allowing the hot air to flow through the fin plate 210 more smoothly and take away more heat.

[0051] Embodiment 2:

[0052] As one of the optimized structural designs for Example 1, Figure 1-Figure 8 As shown, the connection points of the straight tube 310 and the curved tube 320 are fixedly connected by welding, and the mixing component is a first mixer 40, which includes a first fixed column 410, a first fixed seat 420 and a first blade 430. The first fixed seat 420 is rotatably sleeved on the outer wall of the column body of the first fixed column 410, and the first blade 430 is arranged in a circular array on the outer wall of the seat body of the first fixed seat 420. The first fixed column 410 is vertically arranged and welded inside the tube cavity of the curved tube 320.

[0053] It is explained that the design of the first mixer 40 inside the curved tube 320 realizes the preliminary mixing of the fluid during the flow process. Due to the special shape of the curved tube 320, the fluid will generate certain disturbances when passing through, and the structure of the first mixer 40 can further promote the mixing effect of the fluid. The first fixed column 410 is a supporting structure, which is vertically arranged and welded inside the tube cavity of the curved tube 320, ensuring the stability and reliability of the first mixer 40.

[0054] Specifically, the first fixed seat 420 is connected to the outer wall of the column body of the first fixed column 410 by rotation. This design allows the first fixed seat 420 to rotate freely within a certain range, so as to adapt to the impact of different directions and forces generated when the fluid flows. This flexibility not only enhances the durability of the first mixer 40, but also helps to improve the mixing effect. Among them, the first blades 430 are arranged in a circular array on the outer wall of the seat body of the first fixed seat 420. This layout allows the blades to be evenly distributed on the path of fluid flow. When the fluid passes through, the blades will effectively disturb and cut it, thereby breaking the laminar state of the fluid and promoting the mixing of different parts of the fluid. This design can significantly improve the uniformity and efficiency of mixing.

[0055] Embodiment 3:

[0056] This embodiment is a further optimization of the structure and principle of embodiment 1. Figure 1-Figure 4 as well as Figure 9-11 As shown, the connection between the straight tube 310 and the curved tube 320 is fixed by screwing with the screw 50 through a flange, and the mixing component is a second mixer 60, which includes a fixing ring 610, a second fixing column 620, a second fixing seat 630 and a second blade 640. The second fixing column 620 is vertically connected to the inner wall of the fixing ring 610, and the second fixing seat 630 is rotatably sleeved on the outer wall of the column body of the second fixing column 620. The second blades 640 are arranged in a circular array on the outer wall of the seat body of the second fixing seat 630. The outer wall of the fixing ring 610 is also vertically symmetrically provided with a second boss 650. The inner cavity of the curved tube 320 close to the flange is vertically symmetrically provided with a first groove, and a first clamping groove is also symmetrically provided along the vertical direction of the first groove. The fixing ring 610 is clamped in the first groove, and the second bosses 650 are respectively clamped in the first clamping groove.

[0057] It is explained that the flange, as a common pipe connection component, can tightly connect the straight pipe 310 and the curved pipe 320 together through fasteners such as bolts, thereby ensuring the stability and sealing of the pipeline system. This connection method is not only simple in structure, but also convenient for installation and disassembly, and is convenient for subsequent maintenance and overhaul work. The fixing ring 610 in the second mixer 60 is the main structure of the second mixer 60, and the second boss 650 vertically symmetrically arranged on its outer wall not only enhances the structural strength of the fixing ring 610, but also facilitates the connection with the curved pipe 320. The first groove and the first clamping groove opened inside the curved pipe 320 cooperate with the fixing ring 610 and the second boss 650, so that the second mixer 60 can be firmly installed inside the curved pipe 320, is not easy to be displaced or fall off, and is also convenient for disassembly and maintenance when it is damaged.

[0058] It is worth noting that the second fixed column 620 is vertically connected to the inner wall of the fixed ring 610, providing a stable support for the second fixed seat 630. The second fixed seat 630 is rotatably sleeved on the outer wall of the column body of the second fixed column 620, so that the second blade 640 can rotate freely within a certain range, thereby achieving mixing and stirring of the fluid. The second blades 640 are arranged in a circular array on the outer wall of the seat body of the second fixed seat 630. This design method allows the fluid to be more evenly and fully mixed when passing through the second mixer 60. In summary, through the fixed connection of the flange and the reasonable installation of the second mixer 60, the stability and operation efficiency of the entire pipeline system can be ensured, and at the same time, it can also meet the needs of fluid mixing and stirring and convenient disassembly and maintenance in actual use.

[0059] Embodiment 4:

[0060] This embodiment is a further optimization of the structure and principle basis of embodiment 3. Figure 1-Figure 4 as well as Figure 9-11 As shown, the straight tube 310 is also provided with an increasing component for increasing the water flow velocity in the tube cavity near the second mixer 60, and the increasing component is an increasing tube diameter section 3130, and the increasing tube diameter section 3130 includes a first part 3131 and a second part 3132, the inner diameter of the first part 3131 gradually decreases along the downstream direction of the water flow, and the inner diameter of the second part 3132 gradually increases along the downstream direction of the water flow, and the first part 3131 is smoothly connected to the second part 3132.

[0061] It is explained that the design of the speed increasing component is intended to achieve effective control of the water flow velocity by changing the size of the pipe diameter. In the tube cavity of the straight tube 310 close to the second mixer 60, the setting of the speed increasing pipe diameter section 3130 enables the water flow to be guided and regulated accordingly when passing through. Specifically, when the water flow enters the first part 3131 of the speed increasing pipe diameter section 3130, since the inner diameter of this part gradually decreases along the downstream direction of the water flow, the water flow is squeezed and the flow velocity begins to accelerate. This design is similar to the nozzle effect, which increases the flow velocity by reducing the outlet area. At the same time, due to the smooth design of the speed increasing pipe diameter section 3130, there is no obvious resistance when the water flow passes through, ensuring the smoothness of the fluid. Subsequently, the water flow enters the second part 3132 of the speed increasing pipe diameter section 3130. At this time, since the inner diameter of this part gradually increases along the downstream direction of the water flow, the water flow begins to gradually diffuse. Although the flow velocity is slightly reduced, the overall flow velocity is still maintained at a high level. This design ensures that the water flow can maintain a certain flow rate after passing through the speed-increasing component, while avoiding the impact and noise that may be caused by excessive flow rate.

[0062] It is worth noting that the speed-increasing component utilizes the effect of the change in pipe diameter on the water flow velocity to achieve effective regulation of the water flow velocity. Through the function of the speed-increasing component, the water flow can maintain a high flow velocity before entering the second mixer 60, which helps to improve the mixing effect and work efficiency of the entire system. At the same time, the smooth connection design of the speed-increasing component also ensures the smoothness of the water flow and reduces the resistance and noise during the operation of the system.

[0063] Embodiment 5:

[0064] This embodiment is a further optimization of the structure and principle basis of embodiment 3. Figure 1-Figure 4 as well as Figure 12-14 As shown, the speed increasing component is a speed increasing flow divider 3140, and the speed increasing flow divider 3140 includes a first outer ring 3141, a second outer ring 3142, a first connecting plate 3143, a second connecting plate 3144 and a spindle-shaped flow dividing column 3145, and the two ends of the flow dividing column 3145 are respectively connected to the end faces of the first connecting plate 3143 and the second connecting plate 3144, and the first connecting plate 3143 and the second connecting plate 3144 are respectively fixed inside the first outer ring 3141 and the second outer ring 3142. The diameter of the first outer ring 3141 is larger than that of the second outer ring 3142, and the second outer ring 3142 has the same diameter as the inner tube diameter of the straight tube 310. A first boss 3146 is vertically symmetrically arranged on the outer wall of the first outer ring 3141. A second groove is vertically symmetrically opened in the inner cavity of the straight tube 310 near the flange, and a second clamping groove is symmetrically opened along the vertical direction of the second groove. The first outer ring 3141 is clamped in the second groove, and the first boss 3146 is respectively clamped in the second clamping groove.

[0065] It is explained that in the specific operation, the spindle-shaped flow dividing column 3145 plays a key role. Its special shape enables the fluid to be evenly divided when passing through and increases the flow rate, thereby improving the overall work efficiency. Among them, the design of the first outer ring 3141 and the second outer ring 3142 enables the speed increasing flow dividing device 3140 to be firmly installed inside the straight tube 310. At the same time, since the diameter of the first outer ring 3141 is larger than that of the second outer ring 3142, this design not only ensures the stability of the speed increasing flow dividing device 3140, but also effectively prevents leakage of the fluid when passing through. In addition, the first connecting plate 3143 and the second connecting plate 3144 provide stable support for the flow dividing column 3145, ensuring the stability of the flow dividing column 3145 when running at high speed.

[0066] It is worth mentioning that the design of the first boss 3146 on the first outer ring 3141 enables the speed-increasing diverter 3140 to be accurately snapped into the second groove and the second slot of the straight tube 310 during installation, which not only ensures the installation accuracy of the speed-increasing diverter 3140, but also improves its working reliability.

[0067] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fin tube heat exchanger, characterized in that: It comprises a fin component (20), a heat exchange tube component (30) and a flow mixing component, wherein the fin component (20) is arranged to surround the heat exchange tube component (30); The heat exchange tube component (30) comprises a plurality of straight tubes (310) and a plurality of curved tubes (320); the heat exchange tube component (30) as a whole is composed of a plurality of straight tubes (310) and a plurality of curved tubes (320) connected end to end; A plurality of the flow mixing components are provided, and are respectively arranged in the tube cavity of the curved tube (320).

2. The fin-tube heat exchanger according to claim 1, characterized in that: The connection points between the straight tube (310) and the curved tube (320) are fixedly connected by welding.

3. The fin-tube heat exchanger according to claim 2, characterized in that: The flow mixing component is a first flow mixer (40), the first flow mixer (40) comprising a first fixed column (410), a first fixed seat (420) and a first blade (430), the first fixed seat (420) being rotatably sleeved on the outer wall of the column body of the first fixed column (410), the first blade (430) being arranged in a circular array on the outer wall of the seat body of the first fixed seat (420), and the first fixed column (410) being arranged vertically and welded inside the tube cavity of the curved tube (320).

4. The fin-tube heat exchanger according to claim 1, characterized in that: The connection points between the straight tube (310) and the curved tube (320) are both screwed and fixed via flanges and screw rods (50).

5. The fin-tube heat exchanger according to claim 4, characterized in that: The flow mixing component is a second flow mixer (60), the second flow mixer (60) comprising a fixing ring (610), a second fixing column (620), a second fixing seat (630) and a second blade (640), the second fixing column (620) being vertically connected to the inner wall of the fixing ring (610), the second fixing seat (630) being rotatably sleeved on the outer wall of the column body of the second fixing column (620), the second blade (640) being arranged in a circular array on the outer wall of the seat body of the second fixing seat (630), the outer wall of the fixing ring (610) being vertically symmetrically provided with second bosses (650), the inner cavity of the curved tube (320) being close to the flange being vertically symmetrically provided with a first groove, and a first clamping groove being symmetrically provided along the vertical direction of the first groove, the fixing ring (610) being clamped inside the first groove, and the second bosses (650) being respectively clamped inside the first clamping grooves.

6. The fin-tube heat exchanger according to claim 5, characterized in that: A speed increasing component for increasing the flow velocity of water is also provided in the tube cavity of the straight tube (310) close to the second flow mixer (60).

7. The fin-tube heat exchanger according to claim 6, characterized in that: The speed-increasing component is a speed-increasing pipe diameter section (3130), and the speed-increasing pipe diameter section (3130) comprises a first part (3131) and a second part (3132), the inner diameter of the first part (3131) gradually decreases along the downstream direction of the water flow, and the inner diameter of the second part (3132) gradually increases along the downstream direction of the water flow, and the first part (3131) and the second part (3132) are smoothly connected.

8. The fin-tube heat exchanger according to claim 6, characterized in that: The speed increasing component is a speed increasing flow divider (3140), and the speed increasing flow divider (3140) comprises a first outer ring (3141), a second outer ring (3142), a first connecting plate (3143), a second connecting plate (3144), and a spindle-shaped flow dividing column (3145), wherein both ends of the flow dividing column (3145) are respectively connected to the end faces of the first connecting plate (3143) and the second connecting plate (3144), and the first connecting plate (3143) and the second connecting plate (3144) are respectively fixed inside the first outer ring (3141) and the second outer ring (3142). The first outer ring (3141) has a larger diameter than the second outer ring (3142), and the second outer ring (3142) has the same inner diameter as the straight tube (310). A first boss (3146) is vertically symmetrically arranged on the outer wall of the first outer ring (3141). A second groove is vertically symmetrically opened in the inner cavity of the straight tube (310) close to the flange, and a second clamping groove is symmetrically opened along the vertical direction of the second groove. The first outer ring (3141) is clamped in the second groove, and the first bosses (3146) are respectively clamped in the second clamping grooves.

9. The fin-tube heat exchanger according to claim 8, characterized in that: The ports of the straight tube (310) at the upper and lower ends of the heat exchange tube component (30) are respectively an outlet tube (3110) and an inlet tube (3120), and a solenoid valve (10) for regulating flow is also provided on the tube body of the inlet tube (3120).

10. The fin-tube heat exchanger according to claim 9, characterized in that: The fin component (20) comprises a fin plate (210), the fin plate (210) being fixedly connected to the outer wall of the heat exchange tube component (30) and arranged in rows, and the end surface of the fin plate (210) is also provided with flow holes (220) in rows.

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