Elliptical finned tube type heat exchanger

Abstract

The invention relates to the technical field of oval finned tube type heat exchange, and discloses an oval finned tube type heat exchanger which comprises a protective shell, an air conveying assembly is fixedly connected to the outer portion of the protective shell, a fixed shell is fixedly connected to the top end of the inner wall of the protective shell, and a rotating rod is rotationally connected to the left end of the fixed shell; the front end of the outer portion of the rotating rod is fixedly connected with a transmission assembly, the interior of the fixed shell is rotationally connected with a plurality of finned tubes, the exterior of the protective shell is fixedly connected with a material conveying assembly, the exterior of the rotating rod is fixedly connected with a plurality of windward pieces, and the interior of the protective shell is fixedly connected with a windward box. According to the heat exchanger, the rotating rod, the transmission gear set, the transmission gear, the rotating gear and the linkage finned tube rotate, the contact area and angle with airflow are continuously changed in the rotating process of the oval finned tube, the beneficial effects of enhancing the heat exchange efficiency and improving the heat exchange effect between the airflow and a medium are achieved, and heat transfer is efficiently completed in the operation process of the heat exchanger.

Description

Technical Field

[0001] The present invention relates to the technical field of elliptical finned tube heat exchange, and particularly relates to an elliptical finned tube heat exchanger. Background Art

[0002] Elliptical finned tube heat exchangers are widely used in industrial waste heat recovery, heating, ventilation and air conditioning, power cooling and other scenarios, and need to meet the requirements of temperature control, energy conservation and consumption reduction through efficient heat exchange and stable operation. For example, they are used for heat exchange of media in chemical production, or for heat transfer between air and refrigerant in building air conditioning systems.

[0003] However, in some existing elliptical finned tube heat exchangers, during use, heat exchange is usually achieved by relying on fixed fins in contact with the air flow, with fixed fin angles and positions. However, it fails to consider that local heat exchange dead zones are likely to form when the air flow passes through, and after long-term operation, dust and scale accumulation on the fin surface will reduce the heat exchange efficiency; for those with rotating fins, due to the simple transmission structure, it is difficult to achieve synchronous and stable linkage of multiple fins, resulting in inconsistent rotation of the fins and unable to uniformly enhance heat exchange, affecting the overall heat exchange effect and making it difficult to meet the requirements of efficient and stable heat exchange, restricting its application in high-demand scenarios.

[0004] Therefore, an elliptical finned tube heat exchanger is proposed to solve the above problems. Summary of the Invention

[0005] To make up for the above deficiencies, the present invention provides an elliptical finned tube heat exchanger, aiming to improve the problems that some devices in the prior art do not consider that local heat exchange dead zones are likely to form when the air flow passes through, and after long-term operation, dust and scale accumulation on the fin surface will reduce the heat exchange efficiency.

[0006] To achieve the above object, the present invention adopts the following technical solutions: An elliptical finned tube heat exchanger includes a protective shell, an air delivery component is fixedly connected to the outside of the protective shell, a fixed shell is fixedly connected to the top end inner wall of the protective shell, a rotating rod is rotatably connected to the left end of the fixed shell, a transmission component is fixedly connected to the front end outside of the rotating rod, a plurality of finned tubes are rotatably connected inside the fixed shell, a material delivery component is fixedly connected to the outside of the protective shell, a plurality of windward vanes are fixedly connected to the outside of the rotating rod, a windward box is fixedly connected to the inside of the protective shell, a plurality of air outlet nozzles are fixedly connected to the bottom end of the windward box, a rotating disc is fixedly connected to the front end of the rotating rod, a rotating disc is fixedly connected to the front end of the rotating disc, a gas pumping component is slidably connected to the outside of the rotating disc, a water storage pipe is fixedly connected to the left end of the gas pumping component, a delivery component is fixedly connected to the rear end of the water storage pipe, and a water tank is fixedly connected to the bottom end of the protective shell; As a further description of the above technical solution: The air delivery component includes an air inlet and an air outlet. The right end of the air inlet is fixedly connected to the left end of the protective shell, and the left end of the air outlet is fixedly connected to the right end of the protective shell; As a further description of the above technical solution: The transmission component The transmission component includes a driving gear, a plurality of transmission gears and a plurality of rotating gears. The inside of the driving gear is fixedly connected to the outside of the rotating rod. The inside of a plurality of the transmission gears are respectively fixedly connected to the outer front ends of some of the finned tubes. The inside of a plurality of the rotating gears are respectively fixedly connected to the outer front ends of the other part of the finned tubes. The driving gear is meshed and connected with one of the transmission gears. A plurality of the transmission gears are meshed with each other. The transmission gear is meshed with the rotating gear. A plurality of the rotating gears are meshed with each other; As a further description of the above technical solution: The feeding component includes a connecting elbow, a feeding pipe and a discharging pipe. The outside of the connecting elbow is fixedly connected to the inside of the protective shell. The outside of the feeding pipe is fixedly connected to the inside of the protective shell. The outside of the discharging pipe is fixedly connected to the inside of the protective shell; As a further description of the above technical solution: The air pumping component includes a fixed rod. The rear end of the fixed rod is fixedly connected to the front end of the rotating disc. The outside of the fixed rod is slidably connected to a limit box. The bottom end of the limit box is fixedly connected to a sliding rod. The bottom end of the sliding rod is fixedly connected to a rubber sheet. The outside of the rubber sheet is slidably connected to a cylinder. The left end of the cylinder is fixedly connected to a connecting pipe; As a further description of the above technical solution: The conveying component includes a water outlet pipe. The rear end of the water storage pipe is fixedly connected to the front end of the water outlet pipe. The rear end of the water storage pipe is fixedly connected to a water inlet pipe. Rubber heads are slidably connected inside the water inlet pipe and the water outlet pipe. Springs are fixedly connected to the outside of the rubber heads. The other ends of the two springs are respectively fixedly connected to the inside of the water inlet pipe and the water outlet pipe; As a further description of the above technical solution: Part of the limiting pipes are fixedly connected to the outside of the connecting elbow. The inside of the other part of the limiting pipes are respectively fixedly connected to the outside of the feeding pipe and the discharging pipe. Two rotating pipes are rotatably connected inside the limiting pipes. The two rotating pipes are rotatably connected to each other. Two rubber blocks are rotatably connected inside the rotating pipes. A sealing block is fixedly connected inside the rotating pipes. Gaskets are slidably connected inside the two rotating pipes; As a further description of the above technical solution: The outer part of the sliding rod is slidably connected inside the air cylinder, and the left end of the connecting pipe is fixedly connected to the right end of the water storage pipe.

[0007] The present invention has the following beneficial effects: In the present invention, through the rotating rod, the transmission gear set, the driving gear, the transmission gear, and the rotating gear, the linkage finned tube rotates. During the rotation of the elliptical finned tube, the contact area and angle with the air flow are continuously changed, achieving the beneficial effects of enhancing the heat exchange efficiency and improving the heat exchange effect between the air flow and the medium, enabling the heat exchanger to efficiently complete heat transfer during operation. In the present invention, by driving the air pumping assembly through the rotating disk, the fixed rod, the limiting box, etc., and cooperating with the water storage pipe and the conveying assembly to form a water flow cycle, and using the cooperation of wind power and hydraulic power to drive the windward fins to rotate stably, the beneficial effects of enhancing the rotational stability of the finned tube and assisting the internal heat exchange are achieved, ensuring the long-term efficient operation of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a three-dimensional schematic diagram of an elliptical finned tube heat exchanger proposed by the present invention; Figure 2 is a structural schematic diagram of the connecting elbow of an elliptical finned tube heat exchanger proposed by the present invention; Figure 3 is a structural schematic diagram of the fixed shell of an elliptical finned tube heat exchanger proposed by the present invention; Figure 4 is a structural schematic diagram of the finned tube of an elliptical finned tube heat exchanger proposed by the present invention; Figure 5 is a structural schematic diagram of the windward fin of an elliptical finned tube heat exchanger proposed by the present invention; Figure 6 is a structural schematic diagram of the air cylinder of an elliptical finned tube heat exchanger proposed by the present invention; Figure 7 is a structural schematic diagram of the water storage pipe of an elliptical finned tube heat exchanger proposed by the present invention; Figure 8 is a structural schematic diagram of the limiting tube of an elliptical finned tube heat exchanger proposed by the present invention.

[0009] Legend Explanation: 1. Protective shell; 2. Air inlet; 3. Air outlet; 4. Fixed shell; 5. Rotating rod; 6. Driving gear; 7. Fin tube; 8. Transmission gear; 9. Rotating gear; 10. Connecting elbow; 11. Feed pipe; 12. Discharge pipe; 13. Windward vane; 14. Windward box; 15. Air outlet nozzle; 16. Rotating disk; 17. Fixed rod; 18. Limit box; 19. Sliding rod; 20. Rubber sheet; 21. Air cylinder; 22. Connecting pipe; 23. Water storage pipe; 24. Water outlet pipe; 25. Water inlet pipe; 26. Spring; 27. Rubber head; 28. Rotating pipe; 29. Rubber block; 30. Sealing block; 31. Gasket; 32. Limit pipe. Detailed implementation manner

[0010] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0011] Refer to Figures 1 to 4, an embodiment provided by the present invention: an elliptical fin-tube heat exchanger, including a protective shell 1, the protective shell 1 serves as the main frame of the heat exchanger, provides installation support and space protection for all internal components, isolates interference from external dust, moisture, etc., ensures that the heat exchange process is carried out in a stable environment, and is the basic bearing component of the overall structure of the device. The outside of the protective shell 1 is fixedly connected with an air supply component, and the air supply component includes an air inlet 2 and an air outlet 3. The air inlet 2 guides the external airflow to be exchanged with heat into the inside of the protective shell 1, and the air outlet 3 discharges the airflow that has completed the heat exchange. The two cooperate to construct an airflow flow path for gas-liquid / gas-gas exchange The right end of the air inlet 2 is fixedly connected to the left end of the protective shell 1, and the left end of the air outlet 3 is fixedly connected to the right end of the protective shell 1. The top of the inner wall of the protective shell 1 is fixedly connected with a fixed shell 4, and the fixed shell 4 is fixed to the top of the inner wall of the protective shell 1 to provide a mounting fulcrum for the core transmission and heat exchange components such as the rotating rod 5 and the fin tube 7 to ensure the relative position of each component is accurate, and to ensure the stability and orderliness of the power conduction and heat exchange process. The left end of the fixed shell 4 is rotatably connected with a rotating rod 5, and the rotating rod 5 runs through the power conduction shaft of the fixed shell 4. The rotating disk 16 is manually driven or passively received to impact the windward sheet 13 with the airflow. The power is used to realize rotation and transmit the power to the transmission assembly, which is the core power source for driving the wing tube 7 to rotate. The external front end of the rotating rod 5 is fixedly connected with the transmission assembly, and the transmission assembly includes a transmission gear 6, a plurality of transmission gears 8 and a plurality of rotating gears 9. The interior of the transmission gear 6 is fixedly connected to the outside of the rotating rod 5, and the interiors of the plurality of transmission gears 8 are respectively fixedly connected to the external front ends of some wing tubes 7. The interiors of the plurality of rotating gears 9 are respectively fixedly connected to the front ends of the other wing tubes 7. The transmission gear 6 is meshedly connected with one of the transmission gears 8, and the plurality of transmission gears 8 are meshedly connected with each other. The transmission gear 8 and the rotating gear 9 is a meshing connection, and multiple rotating gears 9 are meshing connections. The transmission component synchronously transmits the rotational power of the rotating rod 5 to all the fin tubes 7 through the gear meshing relationship, so that multiple groups of fin tubes 7 can achieve linked rotation, ensuring the consistency and coordination of the rotation of the fin tubes 7, providing power transmission guarantee for uniform and enhanced heat exchange, and the internal rotation of the fixed shell 4 is connected with multiple fin tubes 7. Heat exchange medium such as water and heat transfer oil flows inside the fin tubes 7, and the outside is in contact with the airflow through elliptical fins. The contact area and angle between the fins and the airflow are continuously changed during rotation, breaking the dead angle of airflow flow and enhancing heat exchange efficiency. It is a core functional component for achieving efficient heat exchange.

[0012] Reference Figure 2 and Figure 3, an input component is fixedly connected to the outside of the protective shell 1. The input component includes a connecting elbow 10, a feed pipe 11, and a discharge pipe 12. The outside of the connecting elbow 10 is fixedly connected inside the protective shell 1, the outside of the feed pipe 11 is fixedly connected inside the protective shell 1, and the outside of the discharge pipe 12 is fixedly connected inside the protective shell 1. In the input component, the feed pipe 11 introduces the medium to be heat-exchanged, the connecting elbow 10 evenly distributes the medium to each fin tube 7, and the discharge pipe 12 collects the medium that has completed heat exchange and discharges it, constructing a closed-loop medium flow to ensure the input, distribution, and output of the heat-exchanging medium. A plurality of wind-facing vanes 13 are fixedly connected to the outside of the rotating rod 5. The wind-facing vanes 13 are fixed to the outside of the rotating rod 5 and generate a driving force when impacted by the airflow, assisting the passive rotation of the rotating rod 5 to achieve self-driven rotation without an additional power source, reducing energy consumption and enhancing the diversity of power input. An air-facing box 14 is fixedly connected inside the protective shell 1. A plurality of air outlet nozzles 15 are fixedly connected to the bottom end of the air-facing box 14. The air-facing box 14 converges the airflow entering the protective shell 1 and evenly disperses and sprays the airflow to the surface of the fin tube 7 through the air outlet nozzles 15 at the bottom end, avoiding uneven heat exchange caused by concentrated airflow and improving the uniformity and sufficiency of the contact between the fins and the airflow. A rotating disk 16 is fixedly connected to the front end of the rotating rod 5. The rotating disk 16 is a manual operation component exposed outside the protective shell 1. By driving the rotation of the rotating rod 5, manual intervention control of the rotation of the fin tube 7 is realized, facilitating equipment debugging, startup, and active adjustment under specific working conditions. A rotating disk 16 is fixedly connected to the front end of the rotating disk 16.

[0013] Refer to Figures 5 to 7 , a gas pumping component is slidably connected to the outside of the rotating disk 16. The gas pumping component includes a fixed rod 17. The rear end of the fixed rod 17 is fixedly connected to the front end of the rotating disk 16. A limit box 18 is slidably connected to the outside of the fixed rod 17. A sliding rod 19 is fixedly connected to the bottom end of the limit box 18. A rubber sheet 20 is fixedly connected to the bottom end of the sliding rod 19. A cylinder 21 is slidably connected to the outside of the rubber sheet 20. A connecting pipe 22 is fixedly connected to the left end of the cylinder 21. When the gas pumping component rotates with the rotating disk 16, the sliding rod 19 is driven by the fixed rod 17 to reciprocate in the cylinder 21, and the air pumping function is realized by using the sealing property of the rubber sheet 20. Compressed gas is input into the water storage pipe 23 through the connecting pipe 22 to provide a power air source for the self-cleaning system. A water storage pipe 23 is fixedly connected to the left end of the gas pumping component. The water storage pipe 23 stores cleaning water. Under the action of the air pressure input by the gas pumping component, the water is pushed to spray out through the water outlet pipe 24 to impact the wind-facing vanes 13.

[0014] Refer to Figure 7, a conveying component is fixedly connected to the rear end of the water storage pipe 23, and a water tank is fixedly connected to the bottom end of the protective shell 1. The water tank is fixed to the bottom end of the protective shell 1 and serves as a storage container for cleaning water. It is connected to the water storage pipe 23 through a water inlet pipe 25 to provide water source replenishment for the self-cleaning system and ensure the continuous operation of the cleaning function. The conveying component includes a water outlet pipe 24. The rear end of the water storage pipe 23 is fixedly connected to the front end of the water outlet pipe 24. The rear end of the water storage pipe 23 is fixedly connected with a water inlet pipe 25. The outside of the sliding rod 19 is slidably connected inside the air cylinder 21. The left end of the connecting pipe 22 is fixedly connected to the right end of the water storage pipe 23. Rubber heads 27 are slidably connected inside both the water inlet pipe 25 and the water outlet pipe 24. Springs 26 are fixedly connected to the outside of the rubber heads 27. The other ends of the two springs 26 are respectively fixedly connected inside the water inlet pipe 25 and the water outlet pipe 24. The conveying component uses air pressure to push the water flow out to achieve self-cleaning inside the heat exchanger. At the same time, automatic water replenishment is achieved through the cooperation of the spring 26 and the rubber head 27 to maintain the continuous supply of cleaning water source; Refer to Figure 4 and Figure 8 , a part of the limiting pipe 32 is fixedly connected to the outside of the connecting elbow 10, and the other parts of the limiting pipe 32 are respectively fixedly connected to the outside of the feed pipe 11 and the discharge pipe 12. Two rotating pipes 28 are rotatably connected inside the limiting pipe 32. The two rotating pipes 28 are rotatably connected to each other. Two rubber blocks 29 are rotatably connected inside the rotating pipe 28. A sealing block 30 is fixedly connected inside the rotating pipe 28. Gaskets 31 are slidably connected inside the two rotating pipes 28. The limiting pipe 32 strengthens the pipeline connection of the feeding component to prevent pipeline loosening caused by vibration; the rotating pipe 28 allows the finned tube 7 to rotate flexibly within a certain range to adapt to the angle change during the transmission process; the rubber blocks 29, the sealing block 30 and the gaskets 31 work together to ensure the sealing performance of the pipeline connection and prevent the leakage of the heat exchange medium from affecting the efficiency and safety.

[0015] Working principle: At the initial stage of operation, the air conveying component is started, and the external air flow enters the inside of the protective shell 1 through the air inlet 2 to provide the air flow basis for heat exchange; at the same time, heat exchange media such as hot water and heat-conducting oil are input through the feed pipe 11 of the feeding component. After being distributed by the connecting elbow 10, they enter the inside of the finned tube 7 to complete the input preparation of the medium and the air flow, and build the initial conditions for heat exchange. The rotating rod 5 serves as the core of power transmission and can be manually driven through the rotating disc 16 or passively rotated by using the air flow to impact the windward piece 13. When the rotating rod 5 rotates, the transmission gear 6 on its outside rotates synchronously. By meshing with the transmission gear 8, it drives part of the finned tubes 7 to rotate; and due to the meshing relationship between the transmission gears 8, between the transmission gear 8 and the rotating gear 9, and between the rotating gears 9, all the finned tubes 7 are driven to rotate. During the rotation of the elliptical finned tube 7, the contact area and angle with the air flow continuously change, strengthening the heat exchange efficiency and realizing efficient heat exchange between the air flow and the medium.

[0016] The air flow entering the protective shell 1 first converges to the windward box 14 and then is dispersed and evenly sprayed onto the surface of the finned tube 7 through the air outlet nozzles 15 at the bottom end. This design has concentrated air flow, utilizes the air flow to impact the windward vanes 13, ensures the uniformity of the rotational heat exchange of the finned tube 7, improves the overall heat exchange effect, and enables the air flow to complete the temperature rise and fall as required during the process of passing through the heat exchanger.

[0017] At the beginning, manually rotate the rotating disk 16 to drive the fixed rod 17 to rotate. The limit box 18 on the fixed rod 17 rotates with it, driving the sliding rod 19 to reciprocate in the air cylinder 21, and the rubber sheet 20 moves synchronously to achieve air pumping. The generated air flow is input into the water storage pipe 23 through the connecting pipe 22. The air pressure in the water storage pipe 23 rises, pushing the cleaning water to be output through the water outlet pipe 24. The rubber head 27 in the water inlet pipe 25 is closed by the action of the spring 26 to prevent backflow, and the water flow at the inner bottom end of the protective shell 1 is impacted to further drive the rotation of the windward vanes 13. The spring 26 resets to push the rubber head 27 to open the water inlet pipe 25, replenishing the water source in the water storage pipe 23 from the inside of the water tank, and reciprocating to push the water flow, enabling the wind force and water force to drive the windward vanes 13 to rotate more stably and partially exchange the heat inside the heat exchanger.

[0018] In the feeding assembly, the connecting elbow 10, the feeding pipe 11, and the discharging pipe 12 are firmly connected through the limit pipe 32, and the rotating pipe 28 enables the finned tube 7 to rotate flexibly to meet the operation requirements; the rubber block 29, the sealing block 30, and the gasket 31 work together to ensure the sealing of the pipeline connection part, prevent the leakage of the medium, ensure the long-term stable operation of the heat exchanger, and avoid affecting the heat exchange efficiency and system safety due to leakage.

[0019] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An elliptical finned tube heat exchanger, comprising a protective shell (1), characterized in that: An air delivery component is fixedly connected to the outside of the protective shell (1). A fixed shell (4) is fixedly connected to the top end of the inner wall of the protective shell (1). A rotating rod (5) is rotatably connected to the left end of the fixed shell (4). A transmission component is fixedly connected to the front end of the outside of the rotating rod (5). A plurality of finned tubes (7) are rotatably connected to the inside of the fixed shell (4). A material conveying component is fixedly connected to the outside of the protective shell (1). A plurality of windward vanes (13) are fixedly connected to the outside of the rotating rod (5). A windward box (14) is fixedly connected to the inside of the protective shell (1). A plurality of air outlet nozzles (15) are fixedly connected to the bottom end of the windward box (14). A rotating disk (16) is fixedly connected to the front end of the rotating rod (5). A rotating disk (16) is fixedly connected to the front end of the rotating disk (16). A gas pumping component is slidably connected to the outside of the rotating disk (16). A water storage pipe (23) is fixedly connected to the left end of the gas pumping component. A conveying component is fixedly connected to the rear end of the water storage pipe (23). A water tank is fixedly connected to the bottom end of the protective shell (1).

2. The finned tube heat exchanger with elliptical fins according to claim 1, wherein: The air delivery component includes an air inlet (2) and an air outlet (3). The right end of the air inlet (2) is fixedly connected to the left end of the protective shell (1). The left end of the air outlet (3) is fixedly connected to the right end of the protective shell (1).

3. The finned tube heat exchanger with elliptical fins according to claim 1, wherein: The transmission component includes a driving gear (6), a plurality of transmission gears (8) and a plurality of rotating gears (9). The inside of the driving gear (6) is fixedly connected to the outside of the rotating rod (5). The inside of a plurality of the transmission gears (8) are respectively fixedly connected to the front end of the outside of some of the finned tubes (7). The inside of a plurality of the rotating gears (9) are respectively fixedly connected to the front end of the outside of the other part of the finned tubes (7). The driving gear (6) is meshed and connected with one of the transmission gears (8). The plurality of transmission gears (8) are meshed and connected with each other. The transmission gear (8) is meshed and connected with the rotating gear (9). The plurality of rotating gears (9) are meshed and connected with each other.

4. The finned elliptical tube heat exchanger according to claim 1, wherein: The material conveying component includes a connecting elbow (10), a feed pipe (11) and a discharge pipe (12). The outside of the connecting elbow (10) is fixedly connected to the inside of the protective shell (1). The outside of the feed pipe (11) is fixedly connected to the inside of the protective shell (1). The outside of the discharge pipe (12) is fixedly connected to the inside of the protective shell (1).

5. The finned tube heat exchanger with elliptical fins according to claim 1, characterized in that: The gas pumping component includes a fixed rod (17). The rear end of the fixed rod (17) is fixedly connected to the front end of the rotating disk (16). A limit box (18) is slidably connected to the outside of the fixed rod (17). A sliding rod (19) is fixedly connected to the bottom end of the limit box (18). A rubber sheet (20) is fixedly connected to the bottom end of the sliding rod (19). A cylinder (21) is slidably connected to the outside of the rubber sheet (20). A connecting pipe (22) is fixedly connected to the left end of the cylinder (21).

6. The finned tube heat exchanger with elliptical fins according to claim 1, characterized in that: The conveying component includes a water outlet pipe (24), the rear end of the water storage pipe (23) is fixedly connected to the front end of the water outlet pipe (24), the rear end of the water storage pipe (23) is fixedly connected with a water inlet pipe (25), rubber heads (27) are slidably connected inside both the water inlet pipe (25) and the water outlet pipe (24), springs (26) are fixedly connected to the outside of the rubber heads (27), and the other ends of the two springs (26) are respectively fixedly connected inside the water inlet pipe (25) and the water outlet pipe (24).

7. The finned tube heat exchanger with elliptical fins according to claim 4, wherein: Part of a limiting pipe (32) is fixedly connected to the outside of the connecting elbow pipe (10), and the other part of the limiting pipe (32) is fixedly connected to the outside of the feed pipe (11) and the discharge pipe (12) respectively. Two rotating pipes (28) are rotatably connected inside the limiting pipe (32), the two rotating pipes (28) are rotatably connected to each other, two rubber blocks (29) are rotatably connected inside the rotating pipe (28), a sealing block (30) is fixedly connected inside the rotating pipe (28), and gaskets (31) are slidably connected inside the two rotating pipes (28).

8. The finned elliptical tube heat exchanger according to claim 5, wherein: The outside of the sliding rod (19) is slidably connected inside the air cylinder (21), and the left end of the connecting pipe (22) is fixedly connected to the right end of the water storage pipe (23).

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