Self-supporting plate-fin energy-saving heat exchanger

Abstract

The application relates to the technical field of heat exchangers, and discloses a self-supporting plate-fin energy-saving heat exchanger which comprises an outer frame, a heat exchange cavity is formed in the inner part of the outer frame, and a plurality of pairs of positioning frames are vertically arranged in the heat exchange cavity. The wave-shaped positioning frames generate longitudinal vortexes when fluid flows through the wave crests and wave troughs, the fluid boundary layer on the surface of the heat exchange pipes is destroyed, and the thermal resistance is reduced; adjacent V-shaped heat dissipation fins make the fluid accelerate and collide at the included angle, secondary turbulent flow is formed, the contact area is enlarged from the micro level, and the heat diffusion is accelerated; the double effects of macro vortex flow and micro turbulent flow greatly improve the heat exchange efficiency compared with the conventional structure, the heat transfer can be realized more quickly and more fully under the same working condition; meanwhile, the heat dissipation fins have the angle-adjusting function, the angle of the fins is adjusted, the dynamic switching of energy saving and high efficiency is realized, and the equipment can flexibly adapt to complex working conditions with different flow rates and temperature differences.

Description

A self-supporting plate-fin energy-saving heat exchanger Technical Field

[0001] This invention belongs to the field of heat exchanger technology, specifically, it relates to a self-supporting plate-fin type energy-saving heat exchanger. Background Technology

[0002] In many fields such as industrial production, refrigeration and heating, and energy utilization, heat exchangers are key equipment for heat transfer, and their performance directly affects the system's energy efficiency and operating costs.

[0003] Currently, traditional plate-fin heat exchangers are widely used in various heat exchange scenarios. They typically employ a flat positioning frame and a fixed-angle heat dissipation fin structure. During heat exchange, the fluid flows relatively smoothly within the flat channel, making it difficult to generate strong disturbances. This results in a thicker fluid boundary layer, higher thermal resistance, and limited heat transfer efficiency. Furthermore, the fixed angle of the heat dissipation fins in traditional heat exchangers increases fluid flow resistance under low-load conditions, leading to unnecessary energy consumption. Conversely, under high-load conditions, it is difficult to meet the requirements for efficient heat exchange.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0006] A self-supporting plate-fin energy-saving heat exchanger includes an outer frame.

[0007] The outer frame has a heat exchange cavity inside, and several pairs of positioning frames are vertically installed inside the heat exchange cavity. Each positioning frame is equipped with a heat exchange tube. The several pairs of positioning frames are distributed in a wave-like pattern. The wave-like distribution of the positioning frames is used to generate eddies along the undulating direction of the waves during the heat exchange process, thereby reducing thermal resistance.

[0008] Each heat exchange tube is rotatably mounted with several pairs of heat dissipation fins, which are rotatably connected to the positioning frame. Adjacent heat dissipation fins form a V-shape. The V-shaped heat dissipation fins are used to generate eddies along the V-angle during the heat exchange process, thereby reducing thermal resistance.

[0009] The outer wall of the heat exchange tube is equipped with a guide seat, which is rotatably connected to the heat dissipation fins. The guide seat is provided with a displacement groove, and the displacement groove is provided with a first slot and a second slot for positioning the heat dissipation fins.

[0010] A storage spring is installed between the guide seat and the heat dissipation fins.

[0011] In a preferred embodiment of the present invention, a support frame is installed at the bottom of the outer frame. The support frame is vertical. A support plate is installed at the bottom of the support frame. The support plate and the support frame form a 90-degree angle. Several pairs of reinforcing ribs are installed between the support plate and the support frame. The several pairs of reinforcing ribs are triangular. Several pairs of mounting holes are provided on the support plate. The several pairs of mounting holes are in a straight line.

[0012] In a preferred embodiment of the present invention, the outer frame sidewalls are all equipped with cover plates, each cover plate covering both ends of the heat exchange chamber. A countersunk groove is formed at the center of the cover plate, and an end cap is installed on the countersunk groove. A guide bucket is installed on each end cap. One end of one guide bucket is equipped with an input pipe, and the other end of the guide bucket is equipped with an output pipe. Both the input pipe and the output pipe are interconnected with the heat exchange chamber, and a connecting flange is installed at the end of both the input pipe and the output pipe.

[0013] In a preferred embodiment of the present invention, a diversion pipe is installed on the side wall of each positioning frame, and a sleeve is rotatably installed at the end of the diversion pipe. The end of the sleeve is connected to the end face of the heat exchange pipe by bolts.

[0014] In a preferred embodiment of the present invention, each of the diversion tubes movably penetrates the outer frame, and a flexible tube is installed at the end of each diversion tube. A diversion hood is installed at the end of the flexible tube, and a connecting pipe is installed on the diversion hood. The connecting pipe is used to transport heat exchange liquid. Positioning frames are installed at both ends of the diversion hood, and the ends of the positioning frames are connected to the sidewalls of the outer frame.

[0015] In a preferred embodiment of the present invention, the heat dissipation fins are circular, and positioning shafts are installed at both ends of the heat dissipation fins. The positioning shafts are rotatably connected to the side wall of the positioning frame. A guide ring is installed at the center of the heat dissipation fins, and the surface of the guide seat is arc-shaped. The guide ring is slidably connected to the guide seat.

[0016] In a preferred embodiment of the present invention, the first slot is located at the center of the shifting groove, and the second slot is located on both sides of the shifting groove. The first slot and the second slot have the same diameter as the shifting groove. A protrusion is slidably provided inside the shifting groove, and the end of the protrusion is connected to the heat dissipation fin. The first slot is used to position the heat dissipation fin in a horizontal state, and the second slot is used to position the heat dissipation fin in a V-shaped inclined state.

[0017] In a preferred embodiment of the present invention, a guide groove is provided on the guide seat. The guide groove is arc-shaped. A slider is slidably disposed inside the guide groove. The bottom of the slider is in contact with the bottom of the guide groove. A guide shaft is rotatably mounted on the slider. The top of the guide shaft is connected to the heat dissipation fins.

[0018] In a preferred embodiment of the present invention, a guide rod is provided inside the guide groove, and the two ends of the guide rod are welded to the inner sidewall of the guide groove. The guide rod is arc-shaped, and the curvature of the guide rod is the same as the curvature of the guide groove. The guide rod and the slider move through each other.

[0019] In a preferred embodiment of the present invention, a storage spring is sleeved on the guide rod, one end of the storage spring is engaged with the side wall of the guide groove, and the other end of the storage spring is engaged with the side of the slider, and the storage spring is in a compressed state.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] The wave-shaped positioning frame of this invention generates longitudinal vortices when the fluid flows through the crests and troughs, disrupting the fluid boundary layer on the surface of the heat exchange tube and reducing thermal resistance. Adjacent V-shaped heat dissipation fins accelerate the collision of fluid at the angle, forming secondary turbulence, which expands the contact area and accelerates heat diffusion at the microscopic level. The dual effect of macroscopic vortices and microscopic turbulence significantly improves the heat exchange efficiency compared to traditional structures, enabling faster and more complete heat transfer under the same operating conditions. At the same time, the heat dissipation fins have an adjustable angle function. Under low load conditions, the fins are positioned horizontally through the first slot, reducing fluid resistance and energy consumption with a straight flow channel. Under high load conditions, they are switched to a V-shaped inclined state through the second slot, enhancing the vortex effect and improving heat transfer intensity. By adjusting the fin angle, energy saving and high efficiency can be dynamically switched, allowing the equipment to flexibly adapt to complex operating conditions with different flow rates and temperature differences.

[0022] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] In the attached diagram:

[0024] Figure 1 is a three-dimensional diagram of a self-supporting plate-fin energy-saving heat exchanger;

[0025] Figure 2 is a side view of a self-supporting plate-fin energy-saving heat exchanger;

[0026] Figure 3 shows the assembly diagram of the cover plate and end cap of a self-supporting plate-fin energy-saving heat exchanger.

[0027] Figure 4 shows the internal view of the heat exchange chamber of a self-supporting plate-fin energy-saving heat exchanger.

[0028] Figure 5 is a plan view of a self-supporting plate-fin energy-saving heat exchanger as shown in Figure 4.

[0029] Figure 6 is a side view of the positioning frame of a self-supporting plate-fin energy-saving heat exchanger;

[0030] Figure 7 is a three-dimensional view of the positioning frame of a self-supporting plate-fin energy-saving heat exchanger.

[0031] Figure 8 is a partial view of a self-supporting plate-fin energy-saving heat exchanger.

[0032] Figure 9 is a partial view of a self-supporting plate-fin energy-saving heat exchanger.

[0033] Figure 10 is a partial view of a self-supporting plate-fin energy-saving heat exchanger.

[0034] Figure 11 is an enlarged view of point A in Figure 10 of a self-supporting plate-fin energy-saving heat exchanger;

[0035] Figure 12 is an enlarged view of section B in Figure 10 of a self-supporting plate-fin energy-saving heat exchanger.

[0036] Figure 13 is a three-dimensional view of the heat dissipation fins of a self-supporting plate-fin energy-saving heat exchanger.

[0037] In the picture:

[0038] 1. Outer frame; 11. Support frame; 111. Support plate; 112. Reinforcing rib; 113. Mounting hole; 12. Heat exchange chamber; 121. Cover plate; 122. Countersunk groove; 123. End cover; 13. Guide hopper; 131. Inlet pipe; 132. Outlet pipe; 133. Connecting flange; 14. Positioning frame; 141. Heat exchange pipe; 142. Sleeve; 143. Diverter pipe; 15. Diverter hood; 151. Connecting pipe; 152. Positioning frame; 153. Flexible hose;

[0039] 2. Heat dissipation fins; 21. Positioning shaft; 211. Guide ring; 212. Guide seat; 22. Displacement groove; 221. First slot; 222. Second slot; 223. Protrusion;

[0040] 3. Guide rod; 31. Guide groove; 311. Storage spring; 32. Slider; 321. Guide shaft. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0042] Example 1:

[0043] As shown in Figures 1 to 13, a self-supporting plate-fin type energy-saving heat exchanger includes an outer frame 1.

[0044] The outer frame 1 has a heat exchange cavity 12 inside, and several pairs of positioning frames 14 are vertically installed inside the heat exchange cavity 12. Each positioning frame 14 has a heat exchange tube 141 installed inside it. The several pairs of positioning frames 14 are distributed in a wave shape. The wave-shaped distribution of the positioning frames 14 is used to generate eddies along the undulating direction of the waves during the heat exchange process, thereby reducing thermal resistance. This design can effectively improve heat exchange efficiency and reduce energy loss.

[0045] Each heat exchange tube 141 is rotatably mounted with several pairs of heat dissipation fins 2, which are rotatably connected to the positioning frame 14. Adjacent heat dissipation fins 2 form a V-shape. The V-shaped heat dissipation fins are used to generate eddies along the V-angle during heat exchange, thereby reducing thermal resistance. The V-shaped heat dissipation fins further enhance the eddy current effect, improve heat exchange efficiency at the micro level, and make heat transfer more complete.

[0046] A guide seat 212 is installed on the outer wall of the heat exchange tube 141. The guide seat 212 is rotatably connected to the heat dissipation fins 2. A displacement groove 22 is provided on the guide seat 212. A first slot 221 and a second slot 222 are provided on the displacement groove 22 for positioning the heat dissipation fins 2. This provides structural support and positioning basis for the angle adjustment of the heat dissipation fins 2, making it convenient to adjust according to different working conditions.

[0047] A storage spring 311 is installed between the guide seat 212 and the heat dissipation fins 2. It can provide a restoring force after the angle of the heat dissipation fins 2 is adjusted, so as to ensure their stable positioning.

[0048] As shown in Figures 1 to 13, in this specific embodiment, a support frame 11 is installed at the bottom of the outer frame 1. The support frame 11 is vertical, and a support plate 111 is installed at the bottom of the support frame 11. The support plate 111 forms a 90-degree angle with the support frame 11. Several pairs of reinforcing ribs 112 are installed between the support plate 111 and the support frame 11. The pairs of reinforcing ribs 112 are triangular in shape. Several pairs of mounting holes 113 are provided on the support plate 111. The pairs of mounting holes 113 are in a straight line. This structure, through the cooperation of the support frame 11, the support plate 111, and the reinforcing ribs 112, enhances the stability and firmness of the equipment installation, ensuring that the equipment remains stable during operation and reducing the impact of shaking.

[0049] As shown in Figures 1 to 13, furthermore, each side wall of the outer frame 1 is equipped with a cover plate 121, which covers both ends of the heat exchange chamber 12. A countersunk groove 122 is formed at the center of each cover plate 121, and an end cap 123 is installed on the countersunk groove 122. Each end cap 123 is equipped with a guide hopper 13. One end of one guide hopper 13 is connected to an input pipe 131, and the other end is connected to an output pipe 132. Both the input pipe 131 and the output pipe 132 are interconnected with the heat exchange chamber 12, and connecting flanges 133 are installed at the ends of both pipes. This design facilitates connection to external pipelines, while the cover plate 121 seals and protects the heat exchange chamber 12, reducing heat loss and ensuring that heat exchange occurs in a closed and stable environment.

[0050] As shown in Figures 1 to 13, each positioning frame 14 is further equipped with a diversion pipe 143 on its sidewall. A sleeve 142 is rotatably mounted at the end of the diversion pipe 143, and the end of the sleeve 142 is connected to the end face of the heat exchange pipe 141 by bolts. This structure achieves uniform fluid distribution, and the rotational design of the sleeve 142 can accommodate the slight deformation of the positioning frame 14 caused by thermal expansion and contraction, ensuring stable fluid delivery and improving the reliability of the heat exchange process.

[0051] As shown in Figures 1 to 13, each diversion pipe 143 movably penetrates the outer frame 1, and a flexible hose 153 is installed at the end of each diversion pipe 143. A diversion shroud 15 is installed at the end of the flexible hose 153, and a connecting pipe 151 is installed on the diversion shroud 15. The connecting pipe 151 is used to transport the heat exchange fluid. Positioning brackets 152 are installed at both ends of the diversion shroud 15, and the ends of the positioning brackets 152 are connected to the side wall of the outer frame 1. The flexible connection of the flexible hose 153 effectively reduces the impact of equipment vibration or component deformation on fluid transport, making fluid distribution more stable and ensuring the continuous and efficient operation of the heat exchange process.

[0052] Example 2:

[0053] The difference between this embodiment and the previous one is that, as shown in Figures 1 to 13, the heat dissipation fins 2 are circular, and positioning shafts 21 are installed at both ends of the heat dissipation fins 2. The positioning shafts 21 are rotatably connected to the side wall of the positioning frame 14. A guide ring 211 is installed at the center of the heat dissipation fins 2, and the surface of the guide seat 212 is arc-shaped. The guide ring 211 is slidably connected to the guide seat 212. This design makes the rotation of the heat dissipation fins 2 smoother, reduces frictional resistance, and facilitates angle adjustment, thereby better meeting the heat exchange requirements under different operating conditions.

[0054] As shown in Figures 1 to 13, in a specific embodiment, the first slot 221 is located at the center of the shifting slot 22, and the second slots 222 are located on both sides of the shifting slot 22. The first slot 221 and the second slot 222 have the same diameter as the shifting slot 22. A protrusion 223 is slidably disposed inside the shifting slot 22, and the end of the protrusion 223 is connected to the heat dissipation fin 2. The first slot 221 is used to position the heat dissipation fin 2 in a horizontal state, and the second slot 222 is used to position the heat dissipation fin 2 in a V-shaped inclined state. Through the cooperation of the slots and the protrusion 223, the heat dissipation fin 2 is accurately positioned at different angles, and the state of the heat dissipation fin 2 can be flexibly switched to adapt to the heat exchange requirements of different loads.

[0055] Example 3:

[0056] The difference between this embodiment and the previous one is as follows: As shown in Figures 1 to 13, a guide groove 31 is provided on the guide seat 212. The guide groove 31 is arc-shaped, and a slider 32 is slidably disposed inside the guide groove 31. The bottom of the slider 32 is in contact with the bottom of the guide groove 31. A guide shaft 321 is rotatably mounted on the slider 32, and the top of the guide shaft 321 is connected to the heat dissipation fins 2. A guide rod 3 is disposed inside the guide groove 31, and both ends of the guide rod 3 are welded to the inner sidewall of the guide groove 31. The guide rod 3 is arc-shaped, and its curvature is the same as that of the guide groove 31. The guide rod 3 and the slider 32 pass through each other. The guide rod 3 enhances the stability of the slider 32 sliding in the guide groove 31, prevents the slider 32 from deviating during sliding, and ensures the accuracy and stability of the angle adjustment of the heat dissipation fins 2.

[0057] As shown in Figures 1 to 13, in a specific embodiment, a storage spring 311 is sleeved on the guide rod 3. One end of the storage spring 311 is engaged with the side wall of the guide groove 31, and the other end is engaged with the side of the slider 32. The storage spring 311 is in a compressed state. The storage spring 311 provides a restoring force after the slider 32 slides, ensuring the slider 32 is stably positioned, thereby ensuring the angle of the heat dissipation fins 2 is stable. At the same time, it can adapt to the deformation of the components during heat exchange, maintaining the efficient and stable operation of the equipment.

[0058] The implementation principle of the self-supporting plate-fin energy-saving heat exchanger of the present invention is as follows:

[0059] The operator first fixes the equipment to the target position through the mounting holes 113 on the support plate 111, and uses the support frame 11 and triangular reinforcing ribs 112 to ensure the overall structural stability. Then, the flow divider 15 is connected to the side wall of the outer frame 1 through the positioning frame 152, the connecting pipe 151 is connected to the heat exchange liquid delivery pipeline, the flow divider 143 is connected to the flow divider 15 through the hose 153, and the end is bolted to the heat exchange pipe 141 through the sleeve 142 to achieve a flexible connection of the fluid distribution channel. Subsequently, the input pipe 131 and the output pipe 132 are sealed and connected to the heat exchange chamber 12 through the guide bucket 13 and the end cover 123, and connected to the external pipeline through the connecting flange 133. Finally, the cover plate 121 is put on to seal the heat exchange chamber 12, and the overall equipment installation is completed.

[0060] During the heat exchange process, the heat exchange liquid flows into the distribution hood 15 through the connecting pipe 151. As the core hub for liquid distribution, the distribution hood 15 has a unique internal cavity structure that can initially disperse and equalize the liquid flow. Subsequently, the liquid enters the distribution pipe 143 through the flexible connection of the hose 153. Since the sleeve 142 at the end of the distribution pipe 143 can rotate flexibly and is tightly screwed into the heat exchange pipe 141 by bolts, this ensures that no matter how slight the deformation of the corrugated positioning frame 14 is caused by thermal expansion and contraction, the liquid can be accurately and stably evenly distributed into the interior of each heat exchange pipe 141.

[0061] Meanwhile, the fluid to be heat exchanged enters through the inlet pipe 131 and is initially guided by the flared structure of the guide bucket 13. The gradually expanding design of the guide bucket 13 effectively reduces the impact loss when the fluid enters the heat exchange chamber 12, allowing the fluid to diffuse more smoothly. After entering the heat exchange chamber 12, the wave-shaped positioning frame 14 plays a crucial role. As the fluid flows along the undulating path, at the crests, the fluid accelerates due to the contraction of space, forming a high-speed jet; while at the troughs, the space suddenly expands, causing the fluid velocity to decrease sharply, the pressure to change, and thus generating strong longitudinal vortices. These vortices continuously scour the surface of the heat exchange tube 141, effectively disrupting the fluid boundary layer, breaking up the high-resistivity fluid layer that was originally tightly attached to the tube wall, and greatly reducing the resistance to heat transfer.

[0062] The V-shaped structure formed by adjacent heat dissipation fins 2 further enhances the heat exchange effect at the microscopic level. When the fluid flows through the V-shaped angle, it is first accelerated at the V-shaped opening, forming a concentrated high-speed fluid jet. After this fluid jet rushes into the interior of the angle, it collides and bounces with the fins on both sides, thereby generating complex secondary turbulence. The strong disturbance generated by the turbulence not only increases the contact area between the fluid and the fins, but also promotes the rapid mixing and diffusion of heat inside the fluid, allowing the heat on the outer wall of the heat exchange tube 141 to be transferred to the fluid at a faster speed. The macroscopic eddies induced by the wavy positioning frame 14 and the microscopic turbulence generated by the V-shaped heat dissipation fins work together to significantly improve the efficiency of the entire heat exchange process at different scales.

[0063] When the angle of the heat dissipation fin 2 needs to be adjusted, the operator rotates the heat dissipation fin 2, which in turn rotates the bottom protrusion 223 in the displacement groove 22. When the protrusion 223 is located at the first slot 221 in the center of the displacement groove 22, the heat exchange tube 141 is released. Under the action of the storage spring 311, the heat exchange tube 141, the guide seat 212, and the first slot 221 rotate. Finally, the first slot 221 engages with the protrusion 223, completing the positioning of the heat dissipation fin 2, and the heat dissipation fin 2 is in a horizontal state. At this time, the adjacent fins are arranged in parallel, forming a straight flow channel. In this state, the fluid flows smoothly through the fins, and the flow resistance is small. It is suitable for low-load heat exchange scenarios, such as conditions with small fluid flow or low temperature difference, which can effectively reduce energy consumption and ensure a uniform temperature gradient on the surface of the heat exchange tube.

[0064] To enhance heat exchange, the operator rotates the heat exchange tube 141 in the opposite direction, causing the protrusion 223 to move from the first slot 221 into the shifting slot 22. The operator then rotates the heat dissipation fins 2. When the protrusion 223 moves to the second slots 222 on both sides of the shifting slot 22, the heat exchange tube 141 is released. The storage spring 311 pushes the guide seat 212 to rotate, causing the second slots 222 to engage the protrusion 223, and the heat dissipation fins 2 to be in a V-shaped tilt. At this point, adjacent fins form an angled flow channel. The fluid is accelerated as it flows through the V-shaped opening, collides with the fins after entering the angle, and rebounds, generating strong secondary turbulence. This turbulence enhances fluid disturbance, expands the contact area with the fins, accelerates heat mixing and diffusion, and significantly improves heat exchange efficiency in high-load heat exchange scenarios, such as high flow rates or high temperature difference conditions.

[0065] Furthermore, the guide ring 211 slides along the arc-shaped guide seat 212, cooperating with the slider 32 and guide rod 3 in the guide groove 31 to make the fin angle adjustment smoother. The compressed state of the storage spring 311 provides a restoring force for the slider 32, ensuring stable positioning after the fin angle is adjusted, while also adapting to component deformation caused by temperature changes during heat exchange, avoiding fin jamming or loosening, and ensuring the stability of heat exchange efficiency.

[0066] The vortex synergy between the wave-shaped positioning frame 14 and the V-shaped heat dissipation fins, combined with the adjustable fin angle design, allows the heat exchanger to dynamically adjust the heat exchange intensity according to actual operating conditions. Horizontal fins are used to reduce resistance under low loads, while V-shaped fins are switched to enhance heat exchange under high loads. This ensures energy saving while improving the equipment's adaptability to different operating conditions, achieving a highly efficient and stable heat exchange process.

Claims

1. A self-supporting plate-fin type energy-saving heat exchanger, comprising an outer frame (1), characterized in that: The outer frame (1) has a heat exchange cavity (12) inside. Several pairs of positioning frames (14) are vertically installed inside the heat exchange cavity (12), and each positioning frame (14) has a heat exchange tube (141) installed inside. The several pairs of positioning frames (14) are distributed in a wave shape. The wave-shaped positioning frames (14) are used to generate eddies along the undulating direction of the waves during the heat exchange process, thereby reducing thermal resistance. Several pairs of heat dissipation fins (2) are rotatably installed on each heat exchange tube (141). The several pairs of heat dissipation fins (2) are rotatably connected to the positioning frames (14), and adjacent heat dissipation fins (2) form a V-shape. The V-shaped heat dissipation fins are used to generate eddies along the V-shaped angle during the heat exchange process, synchronously... To reduce thermal resistance, a guide seat (212) is installed on the outer wall of the heat exchange tube (141). The guide seat (212) is rotatably connected to the heat dissipation fins (2), and a displacement groove (22) is provided on the guide seat (212). The displacement groove (22) is provided with a first slot (221) and a second slot (222) for positioning the heat dissipation fins (2). A storage spring (311) is installed between the guide seat (212) and the heat dissipation fins (2). The heat dissipation fins (2) are circular. Positioning shafts (21) are installed at both ends of the heat dissipation fins (2). The positioning shafts (21) are rotatably connected to the side wall of the positioning frame (14). A guide ring (21) is installed at the center of the heat dissipation fins (2). 1) The surface of the guide seat (212) is arc-shaped, and the guide ring (211) is slidably connected to the guide seat (212); the first slot (221) is located at the center of the shifting groove (22), and the second slot (222) is located on both sides of the shifting groove (22). The first slot (221) and the second slot (222) have the same diameter as the shifting groove (22). A protrusion (223) is slidably provided inside the shifting groove (22). The end of the protrusion (223) is connected to the heat dissipation fin (2). The first slot (221) is used to position the heat dissipation fin (2) in a horizontal state, and the second slot (222) is used to position the heat dissipation fin (2) in a V-shaped inclined state. The guide seat (212) is provided with a guide groove (31), the guide groove (31) is arc-shaped, and a slider (32) is slidably arranged inside the guide groove (31). The bottom of the slider (32) is in contact with the bottom of the guide groove (31). A guide shaft (321) is rotatably installed on the slider (32), and the top of the guide shaft (321) is connected to the heat dissipation fins (2). A guide rod (3) is provided inside the guide groove (31), and the two ends of the guide rod (3) are welded to the inner sidewall of the guide groove (31). The guide rod (3) is arc-shaped, and the curvature of the guide rod (3) is the same as the curvature of the guide groove (31). The guide rod (3) and the slider (32) are movably connected.A spring (311) is sleeved on the guide rod (3). One end of the spring (311) is engaged with the side wall of the guide groove (31), and the other end is engaged with the side of the slider (32). The spring (311) is in a compressed state.

2. The self-supporting plate-fin energy-saving heat exchanger according to claim 1, characterized in that, The outer frame (1) is equipped with a support frame (11) at the bottom. The support frame (11) is vertical. The support plate (111) is installed at the bottom of the support frame (11). The support plate (111) and the support frame (11) form a 90-degree angle. Several pairs of reinforcing ribs (112) are installed between the support plate (111) and the support frame (11). The several pairs of reinforcing ribs (112) are triangular. Several pairs of mounting holes (113) are opened on the support plate (111). The several pairs of mounting holes (113) are in a straight line.

3. The self-supporting plate-fin energy-saving heat exchanger according to claim 1, characterized in that, The outer frame (1) is equipped with cover plates (121) on its side walls. Each cover plate (121) covers both ends of the heat exchange chamber (12). A countersunk groove (122) is provided at the center of the cover plate (121). An end cap (123) is installed on the countersunk groove (122). A guide bucket (13) is installed on each end cap (123). One end of one guide bucket (13) is equipped with an input pipe (131), and the other end of the guide bucket (13) is equipped with an output pipe (132). The input pipe (131) and the output pipe (132) are connected to the heat exchange chamber (12). A connecting flange (133) is installed at the end of the input pipe (131) and the output pipe (132).

4. A self-supporting plate-fin energy-saving heat exchanger according to claim 1, characterized in that, Each of the positioning frames (14) has a diversion pipe (143) installed on its side wall. A sleeve (142) is rotatably installed at the end of the diversion pipe (143). The end of the sleeve (142) is connected to the end face of the heat exchange pipe (141) by bolts.

5. A self-supporting plate-fin energy-saving heat exchanger according to claim 4, characterized in that, Each of the aforementioned diversion tubes (143) extends through the outer frame (1), and each of the aforementioned diversion tubes (143) is equipped with a hose (153) at its end. A diversion hood (15) is installed at the end of the hose (153), and a connecting pipe (151) is installed on the diversion hood (15). The connecting pipe (151) is used to transport heat exchange liquid. Positioning frames (152) are installed at both ends of the diversion hood (15), and the ends of the positioning frames (152) are connected to the side wall of the outer frame (1).

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