A finned heat exchanger for an air-conditioning refrigeration device

Abstract

The present invention belongs to the technical field of radiators, and provides a finned heat exchanger for an air-conditioning refrigeration device, including a radiator housing. A plurality of sliders are arranged on two groups of symmetric side walls inside the radiator housing. Mounting rods are fixedly installed on the surfaces of the two sliders close to each other. An installation cylinder is slidably installed on the mounting rods. Elastic members are fixedly installed on the sides of the sliders, and the ends of the elastic members away from the sliders are fixedly connected to the installation cylinder. A mounting plate is rotatably installed at the end of the installation cylinder away from the slider. Compared with the prior art, the beneficial effects of the present invention are as follows: According to the number of additional horizontal pipes required, the rotation angle of the elbow pipe is adjusted. The heat dissipation capacity of the device can be increased by the additional horizontal pipes and the heat dissipation fins, and different numbers of horizontal pipes can be set according to actual use requirements, further improving the matching degree between the heat dissipation capacity of the device and the actual use requirements, and improving the practicality and flexibility of the device in use.

Description

Technical Field

[0001] The present invention belongs to the technical field of radiators, and particularly relates to a finned heat exchanger for air-conditioning refrigeration equipment. Background Art

[0002] The finned radiator is one of the most widely used heat exchange devices in gas-liquid heat exchangers. It achieves the purpose of enhancing heat transfer by installing fins on ordinary base tubes. The base tubes can be made of steel pipes, stainless steel pipes, copper pipes, etc., and the fins can also be made of steel strips, stainless steel strips, copper strips, aluminum strips, etc.

[0003] Most of the existing radiators have fixed copper tube shapes and fins at fixed positions. Most of the fins are installed on the copper tubes by welding. When the actual heat dissipation requirements during use do not match the heat dissipation capacity of the radiator, it is not convenient to adjust the number and position of the copper tubes and the number and position of the heat dissipation fins, thus reducing the flexibility of equipment use, and the matching degree between the equipment heat dissipation capacity and the actual use requirements is relatively low. Summary of the Invention

[0004] The purpose of the present invention is to provide a finned heat exchanger for air-conditioning refrigeration equipment, aiming to solve the technical problems of relatively low flexibility in equipment use and relatively low matching degree between the equipment heat dissipation capacity and the actual use requirements in the prior art.

[0005] The present invention is implemented as follows. A finned heat exchanger for air-conditioning refrigeration equipment includes a radiator housing. On two groups of symmetric side walls inside the radiator housing, a plurality of sliders are provided. On the surfaces of the two sliders close to each other, mounting rods are fixedly installed. An installation cylinder is slidably installed on the mounting rods. An elastic member is fixedly installed on the side surface of the slider, and the end of the elastic member away from the slider is fixedly connected to the installation cylinder. The end of the installation cylinder away from the slider is rotatably installed with a mounting plate. The mounting plate is of a U-shaped structure and an arc-shaped positioning groove is provided on one side wall of the mounting plate. A semi-circular elbow is arranged in the positioning groove. The corresponding ends of the two elbows are commonly connected with a cross tube. On the symmetric side walls of the radiator housing, an inlet pipe and an outlet pipe are fixedly installed. The inlet pipe and the outlet pipe are respectively connected to the corresponding cross tubes. Heat dissipation fins are arranged on the cross tubes.

[0006] Further technical solution: The radiator housing is of a frame structure, and guide rails are fixedly installed on two groups of symmetric side walls of the radiator housing. The cross-section of the guide rail is T-shaped and the slider is slidably installed on the guide rail. One end of the guide rail and the inner wall of the radiator housing are provided with a gap for placing the slider. A third fixing screw is threadedly installed on the slider.

[0007] Further technical solution: A support plate is fixedly installed on the surface of the mounting plate close to the slider. Second fixing screws are threadedly installed on the support plate, and the second fixing screws are distributed along the radial direction of the installation cylinder.

[0008] Further technical solution: A first fixing screw is threadedly connected to the side wall of the mounting plate away from the positioning groove. The first fixing screw points to the positioning groove, and a pressing plate is fixedly installed at one end of the first fixing screw close to the positioning groove.

[0009] Further technical solution: The elbow pipe and the horizontal pipe are connected through a connecting cylinder. Connecting heads are rotatably installed at both ends of the connecting cylinder, and the connecting heads at both ends are respectively connected to the elbow pipe and the horizontal pipe. The horizontal pipe is connected to the inlet pipe and the outlet pipe through the connecting cylinder.

[0010] Further technical solution: A semi-circular connecting plate is provided on the horizontal pipe. The heat dissipation fins are fixedly installed on the connecting plate and the heat dissipation fins are semi-circular. Permanent magnets are fixedly installed at both ends of the connecting plate. Two groups of corresponding connecting plates form a complete circular structure around the horizontal pipe, and the two groups of connecting plates are fixedly connected through the permanent magnets.

[0011] Further technical solution: A support ring is provided on the horizontal pipe. The support ring is arranged coaxially with the horizontal pipe. A plurality of groups of rollers are rotatably installed inside the support ring. The plurality of groups of rollers are arranged in a circumferential array around the axis of the support ring. The rollers are in rolling contact with the outer surface of the horizontal pipe. The support ring is installed on the horizontal pipe through the rollers. Two symmetrically distributed support rods are rotatably installed on the support ring. The cross-section of the support rod is a non-circular structure. The support rod penetrates through the heat dissipation fins and through holes for the support rod to penetrate are provided on the heat dissipation fins.

[0012] Further technical solution: A fixing frame is slidably installed on one of the support rods. The fixing frame is L-shaped and one side wall of the fixing frame is parallel to the support rod. A limiting block is fixedly installed at one end of the fixing frame away from the support ring.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. When it is necessary to increase the heat dissipation capacity, rotate the second fixing screw to release the fixation of the second fixing screw on the mounting plate, and at the same time release the fixation of the slider. Then release the connection between the outlet pipe and the horizontal pipe. At this time, rotate each group of elbow pipes in turn. When the elbow pipe rotates, it drives the horizontal pipe to move synchronously. When the elbow pipe rotates, the width it occupies along the length direction of the guide rail decreases. The elbow pipe and the horizontal pipe can be distributed in a wave shape in the radiator housing. At this time, sliders can be continuously added into the radiator housing, and then the horizontal pipes can be continuously added. According to the number of horizontal pipes to be added, adjust the rotation angle of the elbow pipe. By adding the horizontal pipes and the heat dissipation fins, the heat dissipation capacity of the device can be increased, and different numbers of horizontal pipes can be set according to the actual use requirements, further improving the matching degree between the heat dissipation capacity of the device and the actual use requirements, and improving the practicability and flexibility of the device in use.

[0015] 2. Before installing the cross tube, first install the support ring on the cross tube through the roller. When installing the heat dissipation fins, install the heat dissipation fins through the through holes to the set positions on the support rods, and make the opening of the connecting plate face the side where the cross tube is located. Then push the two sets of support rods to rotate so that the connecting plate contacts the outer surface of the cross tube. When the support rods are parallel to the cross tube, the connecting plate contacts the surface of the cross tube. At this time, the two sets of connecting plates at corresponding positions contact and are adsorbed and fixed to each other under the action of permanent magnets. The heat dissipation fins can be installed on the cross tube by connecting and fixing multiple sets of connecting plates to each other. A set number of heat dissipation fins can be installed on the support rods according to the needs of heat dissipation capacity. The number of heat dissipation fins can be increased or decreased on the cross tube later, which further improves the flexibility of adjusting the heat dissipation capacity of the equipment and can be conveniently adjusted according to actual use.

[0016] 3. When adding or reducing the heat sink fins later, the staff pinches the fixing frame and the support rod where the fixing frame is located with their fingers until the limit block contacts the support rod. At this time, the fixing frame is in contact with the surface of the heat sink fin and fixed. The limit block prevents the fixing frame from exerting a large force on the heat sink fin to cause damage to the heat sink fin. Then, the support rod can be pulled away from the cross tube to rotate. At this time, the connecting plate on the other set of support rods contacts the cross tube. Then, the connecting plate on the set of support rods can be separated from the cross tube. At this time, the heat sink fins can be added or reduced. The fixing frame is used to ensure that the position of the heat sink fins on the rotating support rod is stable to avoid heat sinking. The position of the hot fins does not correspond to the position of the cooling fins on the other set of support rods, avoiding subsequent readjustment and increasing the speed of adjusting the number of cooling fins. When increasing the number of cross tubes causes the front cooling fins to block the position of the rear cooling fins, repeat the above steps to disengage the connecting plate on the support rod where the fixing frame is located from the cross tube, and then rotate the other set of support plates to disengage the connecting plate from the cross tube. Subsequent staff use the two sets of support rods to push the support ring on the cross tube to move a set distance, so that the positions of the cooling fins on the two sets of cross tubes that affect each other are staggered, thereby ensuring that the air can flow through the cooling fins stably and fully, thereby ensuring the heat dissipation capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is the front view in the present invention.

[0019] Figure 3 It is a structural schematic diagram of the mounting plate in the present invention.

[0020] Figure 4 for Figure 2 A magnified schematic diagram of the A1 region in the middle.

[0021] Figure 5 for Figure 2 A magnified schematic diagram of the A2 region in the middle.

[0022] Figure 6 This is a schematic structural diagram of the first perspective of the heat dissipation fin in the present invention.

[0023] Figure 7 This is a schematic structural diagram of the second perspective of the heat dissipation fin in the present invention.

[0024] Figure 8 is Figure 7 an enlarged schematic diagram of area A3 in

[0025] Figure 9 is Figure 7 an enlarged schematic diagram of area A4 in

[0026] In the drawings: 1. Radiator housing; 2. Guide rail; 3. Slide block; 4. Mounting rod; 5. Mounting cylinder; 6. Elastic member; 7. Mounting plate; 8. Positioning groove; 9. First fixing screw; 10. Pressure plate; 11. Elbow pipe; 12. Connecting cylinder; 13. Connector; 14. Horizontal pipe; 15. Inlet pipe; 16. Outlet pipe; 17. Support plate; 18. Second fixing screw; 19. Support ring; 20. Roller; 21. Support rod; 22. Connecting plate; 23. Heat dissipation fin; 24. Permanent magnet; 25. Through hole; 26. Fixed frame; 27. Limiting block; 28. Third fixing screw. Specific embodiments

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0029] Such as Figures 1-9As shown in the figure, a finned heat exchanger of an air-conditioning refrigeration device provided by the present invention includes a radiator housing 1. On two groups of symmetric side walls inside the radiator housing 1, a plurality of sliders 3 are provided. The radiator housing 1 is of a frame structure, and guide rails 2 are fixedly installed on two groups of symmetric side walls of the radiator housing 1. The cross-section of the guide rail 2 is T-shaped, and the slider 3 is slidably installed on the guide rail 2. One end of the guide rail 2 and the inner wall of the radiator housing 1 are provided with a space for placing the slider 3. A third fixing screw 28 is threadedly installed on the slider 3. On the surfaces of the two sliders 3 close to each other, a mounting rod 4 is fixedly installed. The cross-section of the mounting rod 4 is a non-circular structure. An installation cylinder 5 is slidably installed on the mounting rod 4. An elastic member 6 is fixedly installed on the side surface of the slider 3. One end of the elastic member 6 away from the slider 3 is fixedly connected to the installation cylinder 5. One end of the installation cylinder 5 away from the slider 3 is rotatably installed with a mounting plate 7. The mounting plate 7 is of a U-shaped structure, and an arc-shaped positioning groove 8 is provided on one side wall of the mounting plate 7. A support plate 17 is fixedly installed on the surface of the mounting plate 7 close to the slider 3. A second fixing screw 18 is threadedly installed on the support plate 17. The second fixing screws 18 are distributed along the radial direction of the installation cylinder 5. A first fixing screw 9 is threadedly connected to the side wall of the mounting plate 7 away from the positioning groove 8. The first fixing screw 9 points to the positioning groove 8. One end of the first fixing screw 9 close to the positioning groove 8 is fixedly installed with a pressing plate 10. A semi-circular elbow 11 is arranged in the positioning groove 8. The corresponding ends of the two elbows 11 are jointly connected with a cross pipe 14. Inlet pipes 15 and outlet pipes 16 are fixedly installed on the symmetric side walls of the radiator housing 1. The inlet pipes 15 and the outlet pipes 16 are respectively connected to the corresponding cross pipes 14. The elbow 11 and the cross pipe 14 are connected through a connecting cylinder 12. Both ends of the connecting cylinder 12 are rotatably installed with connecting heads 13. The two connecting heads 13 at both ends are respectively connected to the elbow 11 and the cross pipe 14. The cross pipe 14 and the inlet pipes 15 and the outlet pipes 16 are all connected through the connecting cylinder 12. Heat dissipation fins 23 are arranged on the cross pipe 14.

[0030] In actual application of this embodiment, the elbow 11 is placed in the positioning groove 8. Then, the first fixing screw 9 is rotated to drive the pressing plate 10 to move, and the elbow 11 is pressed tightly in the positioning groove 8 through the pressing plate 10. After the installation of the elbow 11 is completed, the slider 3 is installed at the set position on the guide rail 2 and fixed through the third fixing screw 28. Then, the two connecting cylinders 12 are installed at both ends of the cross pipe 14 through the connecting heads 13. After the installation is completed, the cross pipe 14 is connected to the two elbows 11 through the connecting cylinders 12 at both ends of the cross pipe 14. When the elbow 11 is connected to the cross pipe 14, the mounting plate 7 is pushed to move in the direction close to the guide rail 2, so as to leave a space for connecting the elbow 11 and the connecting head 13. After the connection between the cross pipe 14 and the elbow 11 is completed, the elastic member 6 pushes the mounting plate 7 to reset. Finally, the two ends of the cross pipe 14 are respectively connected to the inlet pipe 15 and the outlet pipe 16 through the connecting cylinder 12. The inlet pipe 15 and the outlet pipe 16 are flexible hoses. At this time, a complete pipeline can be formed through the inlet pipe 15, the outlet pipe 16, the cross pipe 14 and the elbow 11. Then, the heat dissipation fins 23 are installed on the cross pipe 14.

[0031] When the heat dissipation capacity needs to be increased, turn the second fixing screw 18 to release the fixation of the second fixing screw 18 on the mounting plate 7, and at the same time release the fixation of the slider 3. Then, release the connection between the outlet pipe 16 and the horizontal pipe 14. At this time, turn each group of elbow pipes 11 in sequence. When the elbow pipe 11 rotates, it drives the horizontal pipe 14 to move synchronously. When the elbow pipe 11 rotates, the width it occupies along the length direction of the guide rail 2 decreases. The elbow pipe 11 and the horizontal pipe 14 can be distributed in a wavy shape in the radiator housing 1. At this time, the slider 3 can be continuously added into the radiator housing 1, and then the horizontal pipe 14 can be continuously added. According to the number of horizontal pipes 14 to be added, adjust the rotation angle of the elbow pipe 11. After the adjustment is completed, fix the mounting plate 7 through the second fixing screw 18 to prevent the mounting plate 7 from rotating again. Fix the slider 3 again through the third fixing screw 28, and then it can be used continuously. The heat dissipation capacity of the device can be increased through the added horizontal pipe 14 and the heat dissipation fins 23, and different numbers of horizontal pipes 14 can be set according to actual usage requirements, further improving the matching degree between the heat dissipation capacity of the device and the actual usage requirements, and improving the practicality and flexibility of the device in use.

[0032] In an example of this embodiment, the elastic member 6 is a spring. Of course, it can also be other elastic components such as elastic balls, and a reset thrust is applied to the mounting plate 7 through the spring.

[0033] As Figures 1-9 shown, a finned heat exchanger of an air-conditioning refrigeration device provided by the present invention is provided. A semi-circular connecting plate 22 is arranged on the horizontal pipe 14. The heat dissipation fins 23 are fixedly installed on the connecting plate 22 and the heat dissipation fins 23 are semi-circular. Permanent magnets 24 are fixedly installed at both ends of the connecting plate 22. Two corresponding connecting plates 22 form a complete circular structure around the horizontal pipe, and the two connecting plates 22 are fixedly connected through the permanent magnets 24.

[0034] Specifically, a support ring 19 is arranged on the horizontal pipe 14. The support ring 19 is coaxially arranged with the horizontal pipe 14. A plurality of rollers 20 are rotatably installed in the support ring 19. The plurality of rollers 20 are distributed in a circumferential array around the axis of the support ring 19. The rollers 20 are in rolling contact with the outer surface of the horizontal pipe 14. The support ring 19 is installed on the horizontal pipe 14 through the rollers 20. Two symmetrically distributed support rods 21 are rotatably installed on the support ring 19. The cross-section of the support rod 21 is a non-circular structure. The support rod 21 penetrates through the heat dissipation fin 23 and a through hole 25 for the support rod 21 to penetrate is provided on the heat dissipation fin 23.

[0035] Specifically, a fixing frame 26 is slidably installed on one of the support rods 21. The fixing frame 26 is L-shaped and one side wall of the fixing frame 26 is parallel to the support rod 21. A limiting block 27 is fixedly installed at one end of the fixing frame 26 away from the support ring 19.

[0036] In actual application of this embodiment, before installing the cross tube 14, the support ring 19 is first installed on the cross tube 14 through the roller 20. When installing the heat dissipation fins 23, the heat dissipation fins 23 are installed to the set position on the support rod 21 through the through hole 25, and the opening of the connecting plate 22 is facing the side where the cross tube 14 is located. The surface of the support rod 21 is a rough plane, which has a certain resistance to the heat dissipation fins 23 to prevent the heat dissipation fins 23 from moving at will. Then, the two groups of support rods 21 are pushed to rotate so that the connecting plate 22 contacts the outer surface of the cross tube 14. When the support rods 21 When parallel to the transverse tube 14, the connecting plate 22 contacts the surface of the transverse tube 14. At this time, the two groups of connecting plates 22 corresponding to the position contact and are adsorbed and fixed to each other under the action of the permanent magnet 24. The heat dissipation fins 23 can be installed on the transverse tube 14 by connecting and fixing multiple groups of connecting plates 22 to each other. A set number of heat dissipation fins 23 can be installed on the support rod 21 according to the need of heat dissipation capacity. The number of heat dissipation fins 23 can be increased or decreased on the transverse tube 14 later, further improving the flexibility of adjusting the heat dissipation capacity of the equipment, and can be conveniently adjusted according to actual use;

[0037] When adding or reducing the heat dissipation fins 23 subsequently, the staff member pinches the fixing frame 26 and the support rod 21 where the fixing frame 26 is located with his fingers until the limit block 27 contacts the support rod 21. At this time, the fixing frame 26 is in contact and fixed with the surface of the heat dissipation fin 23. The limit block 27 prevents the fixing frame 26 from exerting a large force on the heat dissipation fin 23 to cause damage to the heat dissipation fin 23. Then, the support rod 21 can be pulled away from the cross tube 14 to rotate. At this time, the connecting plate 22 on the other group of support rods 21 contacts the cross tube 14. Then, the connecting plate 22 on the group of support rods 21 can be separated from the cross tube 14. At this time, the heat dissipation fins 23 can be added or reduced. The fixing frame 26 ensures that the heat dissipation fins 23 on the rotating support rod 21 are in a stable position. To avoid the position of the heat dissipation fins 23 not corresponding to the position of the heat dissipation fins 23 on another set of support rods 21, to avoid subsequent readjustment, and to increase the speed of adjusting the number of heat dissipation fins 23. When increasing the number of cross tubes 14 and causing the front heat dissipation fins 23 to block the position of the rear heat dissipation fins 23, repeat the above steps to disengage the connecting plate 22 on the support rod 21 where the fixing frame 26 is located from the cross tube 14, and then rotate the other set of support rods 21 to disengage the connecting plate 22 from the cross tube 14. Subsequent staff push the support ring 19 to move a set distance on the cross tube 14 through the two sets of support rods 21, so that the positions of the heat dissipation fins 23 on the two sets of cross tubes 14 that affect each other are staggered, thereby ensuring that air can stably and fully flow through the heat dissipation fins 23 to ensure heat dissipation capacity.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0039] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A finned heat exchanger for air conditioning and refrigeration equipment, comprising a radiator housing (1), characterized in that: A plurality of groups of sliders (3) are arranged on two groups of symmetrical side walls in the heat sink housing (1); mounting rods (4) are fixedly mounted on surfaces of the sliders (3) on both sides close to each other; mounting cylinders (5) are slidably mounted on the mounting rods (4); elastic members (6) are fixedly mounted on the sides of the sliders (3); one end of the elastic member (6) away from the sliders (3) is fixedly connected to the mounting cylinder (5); one end of the mounting cylinder (5) away from the sliders (3) is rotatably mounted with a mounting plate (7); the mounting plate (7) is a type of A U-shaped structure and an arc-shaped positioning groove (8) is provided on one side wall of the mounting plate (7), a semicircular bent pipe (11) is provided in the positioning groove (8), the corresponding ends of the bent pipes (11) on both sides are commonly connected to a transverse pipe (14), an inlet pipe (15) and an outlet pipe (16) are fixedly installed on the symmetrical side walls of the radiator housing (1), the inlet pipe (15) and the outlet pipe (16) are respectively connected to the corresponding transverse pipe (14), and the transverse pipe (14) is provided with a heat dissipation fin (23); A support plate (17) is fixedly mounted on the surface of the mounting plate (7) close to the slider (3), and a second fixing screw (18) is threadedly mounted on the support plate (17), and the second fixing screw (18) is distributed along the radial direction of the mounting tube (5); The second fixing screw (18) is rotated to release the fixing of the second fixing screw (18) to the mounting plate (7), and the fixing of the slider (3) is released at the same time, and then the connection between the outlet pipe (16) and the transverse pipe (14) is released. At this time, each group of bent pipes (11) is rotated in turn, and the transverse pipe (14) is driven to move synchronously when the bent pipe (11) rotates. When the bent pipe (11) rotates, the width it occupies along the length direction of the guide rail (2) is reduced, and the bent pipe (11) and the transverse pipe (14) can be distributed in a wave shape in the radiator shell (1). The slider (3) is continuously added into the radiator shell (1), and then the transverse pipe (14) can be continuously added.

2. The finned heat exchanger for air conditioning and refrigeration equipment according to claim 1, characterized in that: The radiator shell (1) is a frame-shaped structure, and guide rails (2) are fixedly mounted on two sets of symmetrical side walls of the radiator shell (1), the guide rail (2) has a T-shaped cross section, and the slider (3) is slidably mounted on the guide rail (2), a gap for the slider (3) to be placed is provided between one end of the guide rail (2) and the inner wall of the radiator shell (1), and a third fixing screw (28) is threadedly mounted on the slider (3).

3. The finned heat exchanger for air conditioning and refrigeration equipment according to claim 1, characterized in that: A first fixing screw (9) is threadedly connected to a side wall of the mounting plate (7) away from the positioning groove (8), the first fixing screw (9) points toward the positioning groove (8), and a pressure plate (10) is fixedly mounted on one end of the first fixing screw (9) close to the positioning groove (8).

4. The finned heat exchanger for air conditioning and refrigeration equipment according to claim 1, characterized in that: The curved pipe (11) and the transverse pipe (14) are connected via a connecting tube (12). Connectors (13) are rotatably mounted at both ends of the connecting tube (12). The connectors (13) at both ends are respectively connected to the curved pipe (11) and the transverse pipe (14). The transverse pipe (14) is connected to the inlet pipe (15) and the outlet pipe (16) via the connecting tube (12).

5. The finned heat exchanger for air conditioning and refrigeration equipment according to claim 1, characterized in that: A semicircular connecting plate (22) is arranged on the transverse tube (14), a heat dissipation fin (23) is fixedly mounted on the connecting plate (22) and the heat dissipation fin (23) is semicircular, permanent magnets (24) are fixedly mounted on both ends of the connecting plate (22), two groups of corresponding connecting plates (22) surround the transverse tube to form a complete circular structure, and the two groups of connecting plates (22) are fixedly connected via the permanent magnets (24).

6. The finned heat exchanger for air conditioning and refrigeration equipment according to claim 5, characterized in that: The transverse tube (14) is provided with a support ring (19), the support ring (19) and the transverse tube (14) are arranged coaxially, a plurality of groups of rollers (20) are rotatably mounted in the support ring (19), the plurality of groups of rollers (20) are distributed in a circular array around the axis of the support ring (19), the rollers (20) are in rolling contact with the outer surface of the transverse tube (14), the support ring (19) is mounted on the transverse tube (14) via the rollers (20), two groups of symmetrically distributed support rods (21) are rotatably mounted on the support ring (19), the cross section of the support rods (21) is a non-circular structure, the support rods (21) penetrate the heat dissipation fins (23), and the heat dissipation fins (23) are provided with through holes (25) for the support rods (21) to penetrate.

7. The finned heat exchanger for air conditioning and refrigeration equipment according to claim 6, characterized in that: A fixing frame (26) is slidably mounted on one group of the support rods (21); the fixing frame (26) is L-shaped and one side wall of the fixing frame (26) is parallel to the support rod (21); and a limiting block (27) is fixedly mounted on one end of the fixing frame (26) away from the support ring (19).

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