Fin type heat exchanger

Abstract

The invention relates to the technical field of heat exchange equipment, and discloses a fin type heat exchanger which comprises a machine shell, a mounting shell is fixedly mounted at the top end of the machine shell, a motor is fixedly mounted at the top end of the mounting shell, fan blades fixedly sleeve the output end of the motor, and side plates are fixedly mounted on the left side and the right side of the machine shell. Clamping plates are fixedly installed on the front side and the rear side of the interior of the machine shell, and fins are placed in the machine shell. The receding holes with the diameter far larger than that of the copper pipes are formed in the side plates, the side plates cannot make contact with the copper pipes, the clamping plates are used for clamping the fins, the front sides and the rear sides of the fins are fixed through the clamping plates and the machine shell, and therefore pressure cannot be applied to the copper pipes in the fixing process; even if vibration occurs in the transportation process, the copper pipes cannot be abraded by the side plates, and the abrasion rate and the after-sale quantity of the copper pipes are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and more specifically, to a fin heat exchanger. Background Art

[0002] Fin heat exchanger is a highly efficient heat exchange equipment, widely used in industries such as industry, refrigeration, HVAC, etc. Its core component is the fin, which increases the heat exchange area to enable heat to be transferred from hot fluid to cold fluid more efficiently. In the prior art, in order to fix the casing and the heat exchanger, a buckle plate is usually used to fix the heat exchanger to the casing. However, in actual use, this method will cause the buckle plate to contact the copper tube of the radiator. During transportation, the buckle plate may wear out the copper tube due to vibration, which increases the wear rate and after-sales volume. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a fin heat exchanger having the advantages of reducing the wear rate and after-sales volume of copper tubes.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fin heat exchanger, comprising a casing, a mounting shell fixedly installed on the top of the casing, a motor fixedly installed on the top of the mounting shell, a fan blade fixedly sleeved on the output end of the motor, side panels fixedly installed on the left and right sides of the casing, clamping plates fixedly installed on the front and back sides of the casing, fins are placed in the casing, a copper tube is fixedly installed in the middle of the fin, a plurality of avoidance holes are opened at the bottom end of the side panel, and a flat plate is fixedly installed on the side of the side panel away from the center of the casing.

[0005] As a preferred technical solution of the present invention, a fixed box is provided in the middle of the casing, the inner cavity of the fixed box is movably connected with a movable plate, a rack is fixedly installed on the front side of the movable plate, the top end of the fixed box is rotatably connected with an incomplete gear, and a one-way inlet pipe and a one-way outlet pipe are fixedly installed at the rear end of the fixed box.

[0006] As a preferred technical solution of the present invention, a driven box is fixedly installed on the top of the incomplete gear, a connecting shaft is fixedly connected to the bottom end of the fan blade, a ratchet is fixedly installed on the bottom end of the connecting shaft, a ratchet is rotatably connected to the inner cavity of the driven box, and a leaf spring and a stop rod are fixedly installed in the inner cavity of the driven box.

[0007] As a preferred technical solution of the present invention, the ratchet is placed in the driven box and contacts the ratchet teeth, the ratchet teeth and the blocking rod are respectively located on both sides of the ratchet teeth, and the leaf spring connects the ratchet teeth and the driven box.

[0008] As a preferred technical solution of the present invention, a nozzle is fixedly installed at the bottom end of the one-way outlet pipe, the nozzle is located above the fin, an air inlet hole is opened at the top end of the one-way inlet pipe, and the fixing box is fixedly installed on the one-way outlet pipe.

[0009] As a preferred technical solution of the present invention, a connecting box 1 is fixedly installed in the inner cavity of the one-way inlet pipe, a connecting box 2 is fixedly installed at the top of the inner cavity of the casing, a cylinder is fixedly installed on the top surface of the casing, an extrusion rod is fixedly sleeved on the output end of the cylinder, a connecting rod is movably connected to the inner cavity of the connecting box 1, a closing ring is fixedly installed at the rear end of the inner cavity of the one-way inlet pipe, and a baffle is fixedly installed on the top of the connecting rod.

[0010] As a preferred technical solution of the present invention, the baffle is fitted with the inner wall of the one-way inlet pipe and is located at the rear side of the air inlet hole, the connecting box 2 is connected to the connecting box 1, and the front end of the connecting rod is fitted with the closed ring.

[0011] As a preferred technical solution of the present invention, a wiring terminal is fixedly installed on the front end of the cylinder, a heat-conducting copper sheet is sleeved on the middle part of the copper tube, a copper box is fixedly sleeved on the top end of the heat-conducting copper sheet, a push piece is movably connected to the inner cavity of the copper box, and a power connecting piece is fixedly installed on the front end of the push piece.

[0012] As a preferred technical solution of the present invention, the connecting piece is located in front of the terminal block, there is no contact between the connecting piece and the terminal block, and the top end of the thermally conductive copper sheet is wrapped around the outside of the copper box.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention provides an avoidance hole much larger than the diameter of the copper tube on the side panel so that the side panel will not contact the copper tube, and uses a clamping plate to clamp the fin, and fixes the front and rear sides of the fin by the clamping plate and the casing, so that no pressure is applied to the copper tube during the fixing process, and even if vibration occurs during transportation, the side panel will not wear out the copper tube, thereby reducing the wear rate and after-sales volume of the copper tube. The reverse rotation of the fan blade drives the ratchet to rotate, and then drives the incomplete gear to rotate through the driven box, thereby drawing the outside air into the fixing box, and then into the one-way outlet pipe and the nozzle, and then sprays high-pressure gas to the fin through the nozzle, thereby cleaning the dust accumulated on the fin.

[0015] 2. The present invention transfers the temperature of the copper tube to the copper box through the heat-conducting copper sheet. When the copper tube reaches high temperature and cannot dissipate heat in time, the temperature on the copper tube will be transferred to the copper box, causing the gas in the copper box to expand due to the heat and drive the push piece to move backward, so that the push piece drives the connecting piece to contact the terminal, thereby starting the cylinder, and then driving the connecting rod to move backward to close the air inlet and open the closed loop. At this time, when the fan blades reverse, it is no longer air that is drawn into the nozzle but water connected to the rear end of the one-way inlet pipe, so that water mist can be sprayed onto the fins to assist in cooling the fins and the copper tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the copper tube connection structure of the present invention;

[0018] Figure 3 For the present invention Figure 2 The enlarged schematic diagram at A in the middle;

[0019] Figure 4 This is a schematic diagram of the explosion connection of the side panels of the structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the one-way outlet pipe connection of the structure of the present invention;

[0021] Figure 6 This is a schematic cross-sectional view of a copper box structure of the present invention;

[0022] Figure 7 It is a cross-sectional schematic diagram of the structural fixing box of the present invention;

[0023] Figure 8 For the present invention Figure 7 The enlarged schematic diagram of point B in the middle;

[0024] Fig. 9 It is a cross-sectional schematic diagram of a one-way inlet pipe of the structure of the present invention;

[0025] Fig.10 It is a schematic diagram of the explosion connection of the casing and the flat plate of the present invention;

[0026] Fig.11 It is a schematic diagram of the explosion connection of the housing, side panels and brackets of the present invention;

[0027] Fig.12 It is a schematic structural diagram of the casing, side panels and flat panel of the present invention.

[0028] In the figure: 1. housing; 2. mounting housing; 3. motor; 4. fan blades; 5. side panels; 6. clamping plate; 7. fins; 8. avoidance holes; 9. copper tube; 10. fixed box; 11. movable plate; 12. rack; 13. incomplete gear; 14. driven box; 15. connecting shaft; 16. ratchet; 17. ratchet; 18. leaf spring; 19. stopper; 20. one-way inlet pipe; 21. one-way outlet pipe; 22. nozzle; 23. connecting box 1; 24. connecting box 2; 25. cylinder; 26. extrusion rod; 27. connecting rod; 28. closing ring; 29. ​​stopper; 30. air inlet hole; 31. connecting plate; 32. terminal; 33. copper box; 34. thermal conductive copper sheet; 35. push sheet; 36. flat plate; 37. C-type slot. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 12 As shown, the present invention provides a fin heat exchanger, comprising a casing 1, a mounting shell 2 is fixedly mounted on the top of the casing 1, a motor 3 is fixedly mounted on the top of the mounting shell 2, a fan blade 4 is fixedly sleeved on the output end of the motor 3, side panels 5 are fixedly mounted on both the left and right sides of the casing 1, a clamping plate 6 is fixedly mounted on both the front and rear sides of the casing 1, a fin 7 is placed in the casing 1, a copper tube 9 is fixedly mounted on the middle of the fin 7, a plurality of avoidance holes 8 are opened at the bottom end of the side panel 5, and a flat plate 36 is fixedly mounted on the side of the side panel 5 away from the center of the casing 1;

[0031] The inner side of the housing 1 near the side plate 5 is provided with a C-shaped slot 37, and both sides of the flat plate 36 are inserted along the C-shaped slot 37 and abut against the side plate 5;

[0032] The blowing direction of the fan blades 4 is not limited to a single upward blowing mode, and the blowing direction can be designed to be downward or to the side according to actual needs. At the same time, there is no limit on the number of motors 3. A motor and fan blade combination can be added at a suitable position of the housing 1 or the mounting housing 2 according to actual use needs and scenarios.

[0033] By opening an avoidance hole 8 on the side panel 5 which is much larger than the diameter of the copper tube 9, the side panel 5 will not contact the copper tube 9, and using a clamping plate 6 to clamp the fin 7, the front and rear sides of the fin 7 are fixed by the clamping plate 6 and the casing 1, so that no pressure is applied to the copper tube 9 during the fixing process, and even if vibration occurs during transportation, the side panel 5 will not wear out the copper tube 9, thereby reducing the wear rate and after-sales volume of the copper tube 9.

[0034] During actual assembly, the size of the copper tube 9 can be freely selected according to specific requirements such as actual working conditions, such as the flow rate and pressure requirements of the conveying medium, the size of the installation space, and the cost budget.

[0035] Among them, a fixed box 10 is provided in the middle of the housing 1, and a moving plate 11 is movably connected to the inner cavity of the fixed box 10, a rack 12 is fixedly installed on the front side of the moving plate 11, an incomplete gear 13 is rotatably connected to the top of the fixed box 10, and a one-way inlet pipe 20 and a one-way outlet pipe 21 are fixedly installed at the rear end of the fixed box 10;

[0036] The reverse rotation of the fan blade 4 drives the ratchet 16 to rotate, and then drives the incomplete gear 13 to rotate through the driven box 14, so that the outside air is drawn into the fixed box 10, and then enters the one-way outlet pipe 21 and the nozzle 22, and then the high-pressure gas is sprayed toward the fin 7 through the nozzle 22, so as to clean the dust accumulated on the fin 7.

[0037] Among them, a driven box 14 is fixedly installed on the top of the incomplete gear 13, a connecting shaft 15 is fixedly connected to the bottom end of the fan blade 4, a ratchet 16 is fixedly installed on the bottom end of the connecting shaft 15, a ratchet 17 is rotatably connected to the inner cavity of the driven box 14, a leaf spring 18 and a blocking rod 19 are fixedly installed in the inner cavity of the driven box 14, the ratchet 16 is placed in the driven box 14 and contacts the ratchet 17, the ratchet 17 and the blocking rod 19 are respectively located on both sides of the ratchet 17, and the leaf spring 18 connects the ratchet 17 and the driven box 14;

[0038] When the fan blade 4 rotates in the forward direction, it drives the ratchet 16 to rotate. In this state, the inclined surface of the ratchet 16 contacts the ratchet teeth 17, pushing the ratchet teeth 17 in the direction of the leaf spring 18. The leaf spring 18 is compressed and passes through, and applies a force to the ratchet teeth 17 toward the ratchet 16 through elasticity, so that the ratchet teeth 17 fit the ratchet 16, and the driven box 14 will not be driven to rotate. When it is necessary to clean the accumulated dust on the wing 7, the motor 3 drives the fan blade 4 to reverse. At this time, the ratchet 16 reverses. Since the ratchet teeth 17 are blocked by the baffle rod 19 and cannot rotate in the direction of the baffle rod 19, when the ratchet 16 reverses, it can drive the driven box 14 to rotate to ensure that the incomplete gear 13 will not be driven to rotate when the device is working normally.

[0039] The bottom end of the one-way outlet pipe 21 is fixedly mounted with a nozzle 22, the nozzle 22 is located above the fin 7, the top end of the one-way inlet pipe 20 is provided with an air inlet hole 30, and the fixing box 10 is fixedly mounted on the one-way outlet pipe 21;

[0040] The air inlet 30 is used as an air inlet and is arranged at the rear side of the closed ring 28. When dust cleaning is required, air is taken in through the air inlet 30. The rear end of the one-way inlet pipe 20 is connected to a water inlet pipe. The water inlet pipe can be a municipal water pipe with pressure or a water pipe without pressure. If it is a municipal water pipe with pressure, there is no need to reverse the fan blade 4. The pressure in the water pipe will drive the water to flow in the one-way inlet pipe 20, the fixing box 10 and the one-way outlet pipe 21. Figure 7 There is a certain gap between the movable plate 11 and the rear side of the fixed box 10, and this gap is used to realize the flow of water. If it is a water pipe without pressure, the fan blades 4 need to be reversed, and the movable plate 11 is driven to move by the reversal of the fan blades 4 to pump and deliver water.

[0041] Among them, the inner cavity of the one-way inlet pipe 20 is fixedly installed with a connection box 1 23, the top of the inner cavity of the casing 1 is fixedly installed with a connection box 24, the top surface of the casing 1 is fixedly installed with a cylinder 25, the output end of the cylinder 25 is fixedly sleeved with an extrusion rod 26, the inner cavity of the connection box 1 23 is movably connected with a connecting rod 27, the rear end of the inner cavity of the one-way inlet pipe 20 is fixedly installed with a closed ring 28, and the top of the connecting rod 27 is fixedly installed with a baffle 29;

[0042] The cylinder 25 drives the extrusion rod 26 to move downward, and then presses the hydraulic oil in the connecting box 24 into the connecting box 1 23, so that the hydraulic oil pushes the connecting rod 27 to move forward. After the connecting rod 27 moves forward, the rear end of the connecting rod 27 is no longer in contact with the closed ring 28, the closed ring 28 is opened, and the baffle 29 is driven to move forward to close the air inlet 30, thereby realizing automatic switching of the water circuit and the air circuit, with a high degree of automation.

[0043] Among them, the baffle 29 is in contact with the inner wall of the one-way inlet pipe 20 and is located at the rear side of the air inlet hole 30, the connecting box 24 is connected with the connecting box 1 23, and the front end of the connecting rod 27 is in contact with the closed ring 28;

[0044] This prevents water from flowing out through the closed loop 28 during air intake, and prevents water from leaking through the air intake hole 30 during auxiliary cooling.

[0045] The front end of the cylinder 25 is fixedly installed with a terminal 32, the middle part of the copper tube 9 is sleeved with a heat-conducting copper sheet 34, the top of the heat-conducting copper sheet 34 is fixedly sleeved with a copper box 33, the inner cavity of the copper box 33 is movably connected with a push piece 35, and the front end of the push piece 35 is fixedly installed with an electric connection piece 31;

[0046] By transferring the temperature of the copper tube 9 to the copper box 33 through the heat-conducting copper sheet 34, when the copper tube 9 becomes hot and cannot dissipate heat in time, the temperature of the copper tube 9 will be transferred to the copper box 33, so that the gas in the copper box 33 expands due to the heat and drives the push piece 35 to move backward, so that the push piece 35 drives the connecting piece 31 to contact the terminal 32, and then starts the cylinder 25, so as to achieve the effect of automatic auxiliary cooling according to the working state of the device.

[0047] The connecting sheet 31 is located in front of the connecting terminal 32, and there is no contact between the connecting sheet 31 and the connecting terminal 32. The top of the heat-conducting copper sheet 34 is wrapped around the outside of the copper box 33.

[0048] There is a gap between the connecting piece 31 and the terminal 32. The air in the copper box 33 expands due to the heat, pushing the push piece 35 to move backward. The backward movement of the push piece 35 drives the connecting piece 31 to move, but the connecting piece 31 will not contact the terminal 32. This prevents the push piece 35 from accidentally opening the cylinder 25 when the temperature of the copper tube 9 is transferred to the copper box 33 when the device is in normal working condition, thereby ensuring the accuracy of the device operation.

[0049] The working principle and use process of the present invention:

[0050] When in use, the heat in the copper tube 9 is transferred to the fin 7, and the motor 3 drives the fan blade 4 to rotate, driving the air flow. When the air flows, the heat on the fin 7 is taken away by the fin 7. Since the avoidance hole 8 is opened on the side plate 5 during the whole assembly process, the aperture of the avoidance hole 8 is much larger than the diameter of the copper tube 9, there is no contact between the side plate 5 and the copper tube 9, and the clamping plate 6, the side plate 5 and the casing 1 clamp the fin 7 together. The fixation of the fin 7 and the copper tube 9 will only put pressure on the fin 7, and will not put pressure on the copper tube 9. Therefore, even if the device vibrates during operation, the side plate 5 will not cut the copper tube 9. When the fan blade 4 rotates, it drives the ratchet 16 to rotate. In this state, the inclined surface of the ratchet 16 contacts the ratchet teeth 17, pushing the ratchet teeth 17 in the direction of the leaf spring 18. The leaf spring 18 is compressed and passes through, and the force of the ratchet 16 is applied to the ratchet teeth 17 by elasticity, so that the ratchet teeth 17 fit the ratchet 16, and the driven box 14 will not be driven to rotate;

[0051] When it is necessary to clean the accumulated dust on the fin 7, the motor 3 drives the fan blade 4 to reverse, and the ratchet 16 reverses at this time. Since the ratchet teeth 17 are blocked by the stop rod 19 and cannot rotate in the direction of the stop rod 19, when the ratchet 16 reverses, the driven box 14 can be driven to rotate, and then the incomplete gear 13 can be driven to rotate. When the incomplete gear 13 rotates, it can drive the movable plate 11 to slide back and forth in the fixed box 10 through the intermittent meshing with the two racks 12, so that the air can be drawn into the one-way inlet pipe 20 through the air inlet hole 30, and then enter the fixed box 10 through the one-way inlet pipe 20, and finally enter the one-way outlet pipe 21 through the fixed box 10. When the pressure in the one-way outlet pipe 21 reaches the opening pressure of the nozzle 22, the nozzle 22 sprays high-pressure gas to the top of the fin 7, thereby blowing off the dust on the fin 7. After the dust is blown off, the fan blade 4 resumes forward rotation and continues to work;

[0052] When the device is working, the heat on the copper tube 9 will be transferred to the copper box 33 through the heat-conducting copper sheet 34, so that the air in the copper box 33 will expand due to the heat, pushing the push piece 35 to move backward. However, in this state, the backward movement of the push piece 35 drives the connecting piece 31 to move, but the connecting piece 31 will not contact the terminal 32. When the temperature of the liquid in the copper tube 9 is too high and the heat cannot be dissipated in time, the copper tube 9 will be in a high temperature state. Under the high temperature condition, the fan blade 4 will reverse, and the temperature transferred to the copper box 33 by the heat-conducting copper sheet 34 will increase, and the moving distance of the push piece 35 will become larger. At this time, the push piece 35 drives the moving of the connecting piece 31 to make the connecting piece 31 1 contacts with the wiring terminal 32, and then starts the cylinder 25, the cylinder 25 drives the extrusion rod 26 to move downward, and then presses the hydraulic oil in the connection box 24 into the connection box 1 23, so that the hydraulic oil pushes the connecting rod 27 to move forward. After the connecting rod 27 moves forward, the rear end of the connecting rod 27 is no longer in contact with the closed ring 28, the closed ring 28 is opened, and the baffle 29 is driven to move forward to close the air inlet 30. At this time, the water in the water pipe connected to the rear end of the one-way inlet pipe 20 enters the one-way inlet pipe 20, and is sprayed on the fin 7 through the one-way inlet pipe 20, the fixing box 10, the one-way outlet pipe 21 and the nozzle 22, so as to assist in cooling the fin 7 and the copper tube 9.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fin heat exchanger, comprising a housing (1), characterized in that: A mounting shell (2) is fixedly mounted on the top of the casing (1), a motor (3) is fixedly mounted on the top of the mounting shell (2), a fan blade (4) is fixedly sleeved on the output end of the motor (3), side panels (5) are fixedly mounted on both the left and right sides of the casing (1), a clamping plate (6) is fixedly mounted on both the front and rear sides of the casing (1), a fin (7) is placed inside the casing (1), a copper tube (9) is fixedly mounted in the middle of the fin (7), a plurality of avoidance holes (8) are opened at the bottom end of the side panel (5), and a flat plate (36) is fixedly mounted on the side of the side panel (5) away from the center of the casing (1).

2. The fin heat exchanger according to claim 1, characterized in that: A fixed box (10) is provided in the middle of the casing (1), the inner cavity of the fixed box (10) is movably connected to a movable plate (11), a rack (12) is fixedly installed on the front side of the movable plate (11), an incomplete gear (13) is rotatably connected to the top end of the fixed box (10), and a one-way inlet pipe (20) and a one-way outlet pipe (21) are fixedly installed at the rear end of the fixed box (10).

3. The fin heat exchanger according to claim 2, characterized in that: A driven box (14) is fixedly mounted on the top end of the incomplete gear (13); a connecting shaft (15) is fixedly connected to the bottom end of the fan blade (4); a ratchet (16) is fixedly mounted on the bottom end of the connecting shaft (15); a ratchet (17) is rotatably connected to the inner cavity of the driven box (14); and a leaf spring (18) and a stop rod (19) are fixedly mounted on the inner cavity of the driven box (14).

4. The fin heat exchanger according to claim 3, characterized in that: The ratchet (16) is placed in the driven box (14) and contacts the ratchet (17). The ratchet (17) and the blocking rod (19) are respectively located on both sides of the ratchet (17). The leaf spring (18) connects the ratchet (17) and the driven box (14).

5. The fin heat exchanger according to claim 2, characterized in that: A nozzle (22) is fixedly mounted at the bottom end of the one-way outlet pipe (21), and the nozzle (22) is located above the fin (7). An air inlet hole (30) is opened at the top end of the one-way inlet pipe (20), and the fixing box (10) is fixedly mounted on the one-way outlet pipe (21).

6. The fin heat exchanger according to claim 2, characterized in that: A connection box 1 (23) is fixedly installed in the inner cavity of the one-way inlet pipe (20), a connection box 2 (24) is fixedly installed at the top end of the inner cavity of the housing (1), a cylinder (25) is fixedly installed on the top surface of the housing (1), an extrusion rod (26) is fixedly sleeved on the output end of the cylinder (25), a connecting rod (27) is movably connected to the inner cavity of the connection box 1 (23), a closed ring (28) is fixedly installed at the rear end of the inner cavity of the one-way inlet pipe (20), and a baffle (29) is fixedly installed on the top end of the connecting rod (27).

7. The fin heat exchanger according to claim 6, characterized in that: The baffle (29) is fitted with the inner wall of the one-way inlet pipe (20) and is located at the rear side of the air inlet hole (30); the second connection box (24) is connected to the first connection box (23); and the front end of the connection rod (27) is fitted with the closed ring (28).

8. The fin heat exchanger according to claim 6, characterized in that: A connection terminal (32) is fixedly mounted on the front end of the cylinder (25); a heat-conducting copper sheet (34) is sleeved on the middle of the copper tube (9); a copper box (33) is fixedly sleeved on the top end of the heat-conducting copper sheet (34); a push piece (35) is movably connected to the inner cavity of the copper box (33); and a connecting piece (31) is fixedly mounted on the front end of the push piece (35).

9. The fin heat exchanger according to claim 8, characterized in that: The connecting sheet (31) is located in front of the connecting terminal (32), there is no contact between the connecting sheet (31) and the connecting terminal (32), and the top end of the heat-conducting copper sheet (34) is wrapped around the outside of the copper box (33).

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