Plate-fin heat exchanger with variable fin spacing
By introducing a variable fin pitch design into the plate-fin heat exchanger, and adjusting the fin pitch using the motor and slider system, the problems of heat transfer efficiency and uneven fluid distribution caused by the fixed fin pitch in the prior art are solved. , improves the overall performance of the heat exchanger.
Patent Information
- Application Number
- CN202323549281.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-26
AI Technical Summary
The fin spacing in existing plate-fin heat exchangers cannot be adjusted, resulting in fluid not being able to fully contact the fin surface, heat transfer efficiency decreases, and fluid distribution is uneven, resulting in local areas being overheated or overcooled, reducing the heat exchanger performance.
A plate-fin heat exchanger with variable fin pitch is designed. By installing components such as motors, threaded rods and sliders in the box, the fin pitch is adjusted. The rotation of the motor drives the threaded rods and lifting plates to move, and slide. The blocks and the connecting blocks are matched, and the fin spacing can be reduced or enlarged to adapt to different fluid conditions.
It realizes flexible adjustment of fin pitch, improves the contact between the fluid and the fin surface, improves heat transfer efficiency, avoids local overheating or supercooling, and improves the performance of the overall heat exchanger.
Smart Images
Figure CN222187943U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a plate-fin heat exchanger, in particular to a variable fin spacing plate-fin heat exchanger, belonging to the technical field of plate-fin heat exchangers. Background Art
[0002] Plate-fin heat exchangers are devices used to achieve heat transfer and heat energy exchange. Through their special structural design, they can effectively transfer heat between two fluids. Plate-fin heat exchangers play an important role in various industrial applications. Their efficient heat exchange characteristics make them a key component of many thermal management systems, helping to control temperature, achieve energy recovery, improve system efficiency, and play an important role in many industrial scenarios.
[0003] After searching, the Chinese patent with publication number CN219161065U discloses a plate-fin heat exchanger, which is applied in the field of heat exchanger technology, and includes a plurality of partitions, which are stacked, a fin is provided between two adjacent partitions, a seal is provided at both ends of the fin, a channel is formed between the fin and the partition, a filter assembly is provided on the partition corresponding to both ends of the channel, and a spoiler assembly is provided on the fin. The application has the effect of filtering the liquid flowing into the channel, reducing the sediment in the liquid, reducing the possibility of channel blockage, and improving the heat exchange performance of the heat exchanger.
[0004] The fins in the above equipment are set between two layers of partitions, and the partitions are stacked. Therefore, the spacing between the fins in the equipment cannot be adjusted. The fins are usually designed to increase the surface area to improve the heat transfer efficiency. If the spacing between the fins cannot be changed, then in some cases, the fluid may not be able to fully contact the fin surface, resulting in a decrease in heat transfer efficiency. Fixed-pitch fins may cause uneven distribution of the fluid when flowing through the fins. This may cause overheating or overcooling of some local areas of the fluid, reducing the performance of the entire heat exchanger. Utility Model Content
[0005] The purpose of the utility model is to provide a plate-fin heat exchanger with variable fin spacing in order to solve the above problems, so as to solve the problem that the spacing between the fins in the prior art cannot be adjusted. The fins are usually designed to increase the surface area to improve the heat transfer efficiency. If the spacing between the fins cannot be changed, then in some cases, the fluid may not be able to fully contact the fin surface, resulting in a decrease in heat transfer efficiency. Fixed-pitch fins may cause uneven distribution of the fluid when flowing through the fins. This may cause overheating or overcooling of some local areas of the fluid, reducing the performance of the entire heat exchanger.
[0006] The utility model is implemented through the following technical scheme: a variable fin spacing plate-fin heat exchanger comprises a box body, the top of the box body is fixedly connected with two support plates, a bearing plate is fixedly connected between the two support plates, the top of the bearing plate is fixedly connected with a shell, a motor is installed inside the shell, the output end of the motor is fixedly connected with a threaded rod, the outside of the threaded rod is fixedly connected with a limiting plate, the outside of the threaded rod is threadedly connected with a threaded sleeve, the bottom of the threaded sleeve is fixedly connected with a lifting plate, both sides of the lifting plate are fixedly connected with limiting plates, limiting grooves are provided on both sides of the interior of the box body, two positioning blocks are fixedly connected to the bottom of the lifting plate, a plurality of limiting grooves are provided inside the lifting plate, a plurality of connecting blocks are slidably connected to the bottom of the lifting plate, both sides of the connecting block are fixedly connected with limiting blocks, both sides of the bottom of the limiting block are rotatably connected with connecting plates, and the bottom of the connecting plate is rotatably connected with a slider.
[0007] Preferably, two slide bars 1 are fixedly connected inside the box, and the fin body is fixedly connected between the two slide bars. The slide bar 1 can play a supporting role, and the fin body can be moved more conveniently through the slide bars.
[0008] Preferably, a slide plate is fixedly connected to the bottom of the fin body, and two slide bars 2 are fixedly connected to the inside of the box body. The slide bars 2 cooperate with the slide bar 1 to make the movement of the fin body smoother.
[0009] Preferably, both sides of the box body are equipped with sealing heads, and one side of the sealing head is fixedly connected with a flow pipe.
[0010] Preferably, the limit plate is rotatably connected to the inside of the bearing plate, and the outside of the threaded rod is rotatably connected to the inside of the bearing plate. The limit plate rotates inside the bearing plate to limit the threaded rod and prevent the threaded rod from falling and affecting the use effect.
[0011] Preferably, the limit block is slidably connected to the inner wall of the limit groove, and the outer portion of the limit plate is slidably connected to the inner wall of the limit groove. The limit block can prevent the connection block from falling, and the limit plate cooperates with the limit groove to prevent the lifting plate from rotating with the threaded rod.
[0012] Preferably, the sliding block is slidably connected to the outside of the sliding rod 1, and the sliding plate is slidably connected to the inner wall of the sliding rod 2.
[0013] The utility model provides a plate-fin heat exchanger with variable fin spacing, which has the following beneficial effects:
[0014] 1. The variable fin spacing plate-fin heat exchanger first starts the motor installed in the shell to rotate the output end of the motor. When the output end of the motor rotates, it drives the threaded rod fixedly connected to the output end to rotate. When the threaded rod rotates, it drives the limit plate fixedly connected to the outside of the threaded rod to rotate. The limit plate is rotatably connected to the inside of the bearing plate, which can prevent the threaded rod from falling. When the slider moves toward the middle, it drives the connecting block to move toward the middle through the connecting plate. The limit blocks fixedly connected on both sides of the connecting block are slidably connected in the limit groove to limit the connecting block to prevent the connecting block from falling. When the connecting block moves toward the middle, the external slider is pulled toward the middle through the connecting plate. When the slider moves toward the middle, the fin body fixedly connected to the bottom of the slider moves with the movement of the slider, thereby reducing the distance between the fin bodies. The motor is started to rotate the threaded rod, thereby driving the lifting plate to move upward to pull the fin body toward the middle to reduce the spacing between the fin bodies.
[0015] 2. The variable fin spacing plate-fin heat exchanger starts the motor in reverse to make the output end of the motor rotate in reverse. When the output end of the motor rotates in reverse, it drives the threaded rod fixedly connected to the output end of the motor to rotate in reverse. When the threaded rod rotates in reverse, it drives the threaded sleeve restricted by the lifting plate to move downward. When the threaded sleeve moves downward, it drives the lifting plate fixedly connected to the bottom of the threaded sleeve to move downward. When the lifting plate moves downward, it drives the positioning block fixedly connected to the bottom of the lifting plate to move downward. When the positioning block moves downward, it pushes the two middle sliders outward through the connecting plate. The slider moves outward to push the connecting block outward through the connecting plate. When the connecting block moves outward, it pushes the outer slider outward through the connecting plate, so that the spacing between the sliders becomes larger, thereby increasing the spacing between the fin bodies fixedly connected to the bottom of the slider. When the motor is started in reverse, it drives the lifting plate downward through the threaded rod, thereby pulling the spacing between the fin bodies apart to increase the spacing. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a structural schematic diagram of the fin body of the utility model;
[0018] Figure 3 This is a schematic diagram of the structure of the connecting plate of the utility model;
[0019] Figure 4 It is a structural schematic diagram of the threaded rod of the utility model.
[0020]
Main component symbol description
[0021] 1. Box body; 2. Support plate; 3. Load-bearing plate; 4. Shell; 5. Motor; 6. Threaded rod; 7. Limiting plate; 8. Threaded sleeve; 9. Lifting plate; 10. Limiting plate; 11. Limiting groove; 12. Positioning block; 13. Limiting groove; 14. Connecting block; 15. Limiting block; 16. Connecting plate; 17. Slider; 18. Slide bar 1; 19. Fin body; 20. Slide plate; 21. Slide bar 2; 22. Head; 23. Flow pipe. DETAILED DESCRIPTION
[0022] The embodiment of the utility model provides a plate-fin heat exchanger with variable fin spacing.
[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The variable fin spacing plate-fin heat exchanger comprises a box body 1, two support plates 2 are fixedly connected to the top of the box body 1, a bearing plate 3 is fixedly connected between the two support plates 2, a shell 4 is fixedly connected to the top of the bearing plate 3, a motor 5 is installed inside the shell 4, a threaded rod 6 is fixedly connected to the output end of the motor 5, a limit plate 7 is fixedly connected to the outside of the threaded rod 6, the limit plate 7 is rotatably connected to the inside of the bearing plate 3, the outside of the threaded rod 6 is rotatably connected to the inside of the bearing plate 3, the outside of the threaded rod 6 is threadedly connected to a threaded sleeve 8, and the bottom of the threaded sleeve 8 is fixedly connected to a lifting plate 9, Limiting plates 10 are fixedly connected to both sides of the lifting plate 9, limiting grooves 11 are provided on both sides of the interior of the box body 1, the outside of the limiting plate 10 is slidably connected to the inner wall of the limiting groove 11, two positioning blocks 12 are fixedly connected to the bottom of the lifting plate 9, a plurality of limiting grooves 13 are provided inside the lifting plate 9, a plurality of connecting blocks 14 are slidably connected to the bottom of the lifting plate 9, both sides of the connecting block 14 are fixedly connected to limiting blocks 15, the limiting blocks 15 are slidably connected to the inner wall of the limiting groove 13, connecting plates 16 are rotatably connected to both sides of the bottom of the limiting block 15, and a slider 17 is rotatably connected to the bottom of the connecting plate 16.
[0024] Working principle: When the spacing between the fin bodies 19 needs to be reduced, first start the motor 5 installed in the outer shell 4 to rotate the output end of the motor 5. When the output end of the motor 5 rotates, it drives the threaded rod 6 fixedly connected to the output end to rotate. When the threaded rod 6 rotates, it drives the limit plate 7 fixedly connected to the outside of the threaded rod 6 to rotate. The limit plate 7 is rotatably connected to the inside of the supporting plate 3 to prevent the threaded rod 6 from falling.
[0025] The two ends of the lifting plate 9 are fixedly connected with limiting plates 10, and the outer part of the limiting plate 10 is slidably connected to the inner wall of the limiting groove 11, so as to limit the lifting plate 9 without hindering the lifting and lowering of the lifting plate 9. The threaded sleeve 8 is fixedly connected to the top of the lifting plate 9, and the threaded sleeve 8 is restricted while limiting the lifting plate 9. When the output end of the motor 5 drives the threaded rod 6 to rotate, the threaded sleeve 8 threadedly connected to the threaded rod 6 is restricted and cannot rotate with the threaded rod 6 and move upward.
[0026] When the threaded sleeve 8 moves upward with the rotation of the threaded rod 6, it drives the lifting plate 9 fixedly connected to the bottom of the threaded sleeve 8 to move upward. The lifting plate 9 drives the positioning block 12 fixedly connected to the bottom of the lifting plate 9 to move upward as the threaded sleeve 8 moves upward. When the positioning block 12 moves upward, it drives the connecting plate 16 connected to the bottom of the positioning block 12 to move upward. At this time, because the slide bar 18 is fixed to the inside of the box body 1, and the slider 17 is slidably connected to the outside of the slide bar 18, and because the other end of the connecting plate 16 is rotatably connected to the top of the slider 17, the positioning block 12 drives the connecting plate 16 upward, and the slider 17 can only move toward the middle due to the restriction of the slide bar 18 on the slider 17.
[0027] When the slider 17 moves toward the middle, the connecting block 14 is driven to move toward the middle through the connecting plate 16. The limit blocks 15 fixedly connected on both sides of the connecting block 14 are slidably connected in the limit groove 13 to limit the connecting block 14 and prevent the connecting block 14 from falling. When the connecting block 14 moves toward the middle, the external slider 17 is pulled toward the middle through the connecting plate 16. When the slider 17 moves toward the middle, the fin body 19 fixedly connected to the bottom of the slider 17 moves with the movement of the slider 17, thereby shortening the distance between the fin bodies 19.
[0028] When the distance between the fin bodies 19 needs to be enlarged, first start the motor 5 in reverse to make the output end of the motor 5 rotate in reverse. When the output end of the motor 5 rotates in reverse, it drives the threaded rod 6 fixedly connected to the output end of the motor 5 to rotate in reverse. When the threaded rod 6 rotates in reverse, it drives the threaded sleeve 8 restricted by the lifting plate 9 to move downward. When the threaded sleeve 8 moves downward, it drives the lifting plate 9 fixedly connected to the bottom of the threaded sleeve 8 to move downward.
[0029] When the lifting plate 9 moves downward, the positioning block 12 fixedly connected to the bottom of the lifting plate 9 is driven to move downward. When the positioning block 12 moves downward, the two middle sliders 17 are pushed outward through the connecting plate 16. The sliders 17 move outward and push the connecting block 14 outward through the connecting plate 16. When the connecting block 14 moves outward, the outer sliders 17 are pushed outward through the connecting plate 16, so that the distance between the sliders 17 becomes larger, thereby increasing the distance between the fin bodies 19 fixedly connected to the bottom of the sliders 17.
[0030] Please refer again Figure 1 , Figure 2 , Figure 3 and Figure 4 Two slide bars 18 are fixedly connected inside the box body 1, a fin body 19 is fixedly connected between the two slide bars 17, the slide bar 17 is slidably connected to the outside of the slide bar 18, a slide plate 20 is fixedly connected to the bottom of the fin body 19, two slide bars 21 are fixedly connected inside the box body 1, the slide plate 20 is slidably connected to the inner wall of the slide bar 21, and a head 22 is installed on both sides of the box body 1, and a flow pipe 23 is fixedly connected to one side of the head 22.
[0031] Working principle: When the fin body 19 moves, it drives the slide plate 20 fixedly connected to the bottom of the fin body 19 to move, and the slide bar 21 fixed inside the box 1 can play a supporting role. The slide plate 20 is slidably connected to the outside of the slide bar 21 and supports the slide plate 20. The slide plate 20 and the slider 17 are respectively fixedly connected at both ends of the fin body 19 to prevent the fin body 19 from shaking when moving.
[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A variable fin spacing plate-fin heat exchanger, comprising a housing (1), characterized in that: The top of the box body (1) is fixedly connected to two support plates (2), a bearing plate (3) is fixedly connected between the two support plates (2), the top of the bearing plate (3) is fixedly connected to a housing (4), a motor (5) is installed inside the housing (4), a threaded rod (6) is fixedly connected to the output end of the motor (5), the outside of the threaded rod (6) is fixedly connected to a limiting plate (7), the outside of the threaded rod (6) is threadedly connected to a threaded sleeve (8), the bottom of the threaded sleeve (8) is fixedly connected to a lifting plate (9), and the two ends of the lifting plate (9) are fixedly connected to the lifting plate (9). The lifting plate (9) is fixedly connected to the side with a limiting plate (10), both sides of the interior of the box body (1) are provided with limiting grooves (11), the bottom of the lifting plate (9) is fixedly connected to two positioning blocks (12), a plurality of limiting grooves (13) are provided inside the lifting plate (9), the bottom of the lifting plate (9) is slidably connected to a plurality of connecting blocks (14), both sides of the connecting blocks (14) are fixedly connected to limiting blocks (15), both sides of the bottom of the limiting blocks (15) are rotatably connected to connecting plates (16), and the bottom of the connecting plates (16) is rotatably connected to a sliding block (17).
2. The variable fin pitch plate-fin heat exchanger according to claim 1, characterized in that: Two slide bars (18) are fixedly connected inside the box body (1), and a fin body (19) is fixedly connected between the two slide blocks (17).
3. The variable fin pitch plate-fin heat exchanger according to claim 2, characterized in that: A slide plate (20) is fixedly connected to the bottom of the fin body (19), and two slide rods (21) are fixedly connected inside the box body (1).
4. The variable fin pitch plate-fin heat exchanger according to claim 1, characterized in that: Sealing heads (22) are installed on both sides of the box body (1), and a flow pipe (23) is fixedly connected to one side of the sealing head (22).
5. The variable fin pitch plate-fin heat exchanger according to claim 1, characterized in that: The limiting plate (7) is rotatably connected to the inside of the bearing plate (3), and the outside of the threaded rod (6) is rotatably connected to the inside of the bearing plate (3).
6. The variable fin pitch plate-fin heat exchanger according to claim 1, characterized in that: The limiting block (15) is slidably connected to the inner wall of the limiting groove (13), and the outer portion of the limiting plate (10) is slidably connected to the inner wall of the limiting groove (11).
7. The variable fin pitch plate-fin heat exchanger according to claim 3, characterized in that: The sliding block (17) is slidably connected to the outside of the first sliding rod (18), and the sliding plate (20) is slidably connected to the inner wall of the second sliding rod (21).