A flat tube structure for microchannel heat exchanger

Abstract

The present invention belongs to the technical field of heat exchangers, and discloses a flat tube structure for a microchannel heat exchanger, including a header pipe 1 and a header pipe 2, one side of the surface of the header pipe 1 is provided with a liquid inlet pipe and a liquid discharge pipe, and the surface of the opposite side of the header pipe 1 and the header pipe 2 is provided with a flat tube body 1 and a flat tube body 2. In the present invention, the flowing fluid will push the push plate to move, and the push plate will drive the connecting plate and the discharge shell to move, and then the square hole 2 on one side of the discharge shell will overlap with the square hole 1, and then the fluid can pass through the square hole 1 and the square hole 2 to enter the inside of the discharge shell, and then the fluid can flow out from the inside of the discharge hole 2, and finally the discharge shell is pushed by the fluid to move, so that the discharge hole 2 discharges the fluid, thereby increasing the discharge speed of the fluid, avoiding excessive pressure inside the header pipe 1, and thereby improving the overall heat exchange efficiency of the heat exchanger.

Description

Technical Field

[0001] The invention belongs to the technical field of heat exchangers, and in particular to a flat tube structure for a microchannel heat exchanger. Background Art

[0002] In recent years, the air-conditioning industry has developed rapidly. As one of the main components of air-conditioning, heat exchangers also need to be improved and optimized according to market requirements. Microchannel heat exchangers have the characteristics of high cooling efficiency, small size, light weight, and strong pressure resistance. They have a large market in the field of air-conditioning. In the design of microchannel heat exchangers, flat tubes are an indispensable component. Their performance and quality directly affect the heat exchange efficiency and operating stability of the entire heat exchanger.

[0003] At present, the flat tube structure used in traditional microchannel heat exchangers is to inject fluid into the inside of the manifold, and then the fluid will enter the flat tube for heat exchange. Due to the fixed structure of the flat tube, the discharge speed of the internal fluid is often difficult to dynamically adjust according to actual needs. This non-adjustability in speed leads to a key problem: there is often a mismatch between the speed at which the fluid enters the flat tube from the manifold and the speed at which the flat tube discharges the fluid. When the fluid enters the manifold at a faster speed, and the flat tube cannot discharge the fluid at the corresponding speed in time due to structural limitations, fluid accumulation will occur inside the manifold, causing the internal pressure to rise sharply. This excessive internal pressure not only increases the operating load of the heat exchanger, but also leads to a decrease in heat exchange efficiency. Summary of the invention

[0004] In order to solve the problem in the above background technology that the discharge speed of the flat tube cannot be adjusted according to the flow speed of the fluid, the present invention provides a flat tube structure for a microchannel heat exchanger.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a flat tube structure for a microchannel heat exchanger, comprising a first manifold and a second manifold, a liquid inlet pipe and a liquid discharge pipe are arranged on one side of the surface of the first manifold, a flat tube body 1 and a flat tube body 2 are arranged on the surface of the first manifold and the second manifold on the opposite side, a drainage hole 1 is respectively opened at both ends of the first manifold and the second manifold, and a drainage hole 2 is respectively opened on the opposite side of the first manifold and the second manifold;

[0006] An exhaust mechanism is arranged on one side of the interior of the drainage hole 1, and the exhaust mechanism includes a square hole 1, and the square hole 1 is opened on one side of the interior of the drainage hole 1, and a square groove is opened on one side of the interior of the drainage hole 2, and a spring 1 is fixedly installed in the inner cavity of the square groove, and a drainage shell located in the interior of the drainage hole 2 is fixedly installed on the other end of the spring 1, and a square hole 2 is opened on one side of the drainage shell close to the square hole 1, and a connecting plate is fixedly installed on one side of the drainage shell close to the square hole 1, and a push plate is fixedly installed on one side of the connecting plate.

[0007] Preferably, it also includes: a supporting mechanism, which is embedded in the square groove, the supporting mechanism includes a mounting plate, the mounting plate is fixedly connected to the inner cavity of the square groove, one side of the square groove is rotatably connected with a worm gear, one side of the worm gear is fixedly installed with a screw located inside the discharge housing, the surface of the screw is threadedly connected with a threaded block, one side of the threaded block is fixedly installed with a second spring, the other end of the second spring is fixedly installed with a supporting plate, and the surface of the supporting plate contacts the surface of the discharge housing, the top end of the square groove is rotatably connected with a gear, the bottom end of the gear is fixedly installed with a worm meshing with the worm gear, and the side of the discharge housing close to the square groove is fixedly installed with a rack meshing with the gear.

[0008] Preferably, two limiting grooves are provided on both sides of the interior of the square groove, and the interiors of the two limiting grooves are slidably connected with limiting plates, and the opposite sides of the two limiting plates are fixedly connected to the surface of the threaded block.

[0009] Preferably, a limiting block located on one side of the mounting plate is fixedly mounted on the other side of the worm wheel, and the surface of the limiting block contacts the surface of the mounting plate.

[0010] Preferably, a slide groove is provided at the top and bottom ends inside the second drainage hole, and a ball located inside the slide groove is rollingly connected to the top and bottom ends of the outer surface of the drainage shell.

[0011] Preferably, a fixing groove is provided at the top and the bottom of the drainage hole, and the connecting plate can move inside the fixing groove.

[0012] Preferably, a partition plate is provided inside the collecting pipe one, and a surface of the partition plate is in contact with the inner wall of the collecting pipe one.

[0013] Preferably, fins are provided on opposite sides of the flat tube body 1 and the flat tube body 2, and the fins are of curved design.

[0014] Preferably, a through hole is opened in the middle of the support plate, and the size of the through hole is larger than the screw rod.

[0015] Preferably, the drainage holes 2 and the drainage shells are grouped into four each and are respectively disposed inside the flat tube body 1 and the flat tube body 2.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention enables, when a fluid with too fast a flow rate enters the interior of the discharge hole 1, the flowing fluid will push the push plate to move, and the push plate will drive the connecting plate and the discharge shell to move, and then the square hole 2 on one side of the discharge shell will overlap with the square hole 1, and then the fluid can pass through the square hole 1 and the square hole 2 to enter the interior of the discharge shell, and then the fluid can flow out from the interior of the discharge hole 2, and finally the discharge shell is pushed by the fluid to move, so that the discharge hole 2 discharges the fluid, thereby increasing the discharge speed of the fluid, avoiding excessive pressure inside the collecting pipe 1, and thereby improving the overall heat exchange efficiency of the heat exchanger.

[0018] The present invention links the movement of the rack when the discharge shell moves, the rack drives the gear and the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the lead screw to rotate, the threaded block moves on the surface of the lead screw, and then the threaded block drives the spring 2 and the support plate to move. Since the surface of the support plate is always in contact with the surface of the discharge shell, the support plate can support the discharge shell when the fluid enters the discharge shell. Finally, the support plate can always support the discharge shell while the discharge shell moves, thereby preventing the position of the discharge shell from moving when the fluid is discharged, thereby improving the stability of the discharge shell in discharging the fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of a cross-section header of the present invention;

[0021] Figure 3 This is a schematic diagram of a cross-sectional flat tube of the present invention;

[0022] Figure 4 This is a schematic diagram showing the interior of the flat tube of the present invention;

[0023] Figure 5 This is a schematic diagram showing the interior of a square groove of the present invention;

[0024] Figure 6 It is a schematic diagram showing the limiting groove of the present invention;

[0025] Figure 7 For the present invention Figure 5 A is an enlarged schematic diagram.

[0026] In the figure: 1. Collecting pipe 1; 2. Collecting pipe 2; 3. Flat tube body 1; 4. Flat tube body 2; 5. Drainage hole 1; 6. Drainage hole 2; 7. Drainage shell; 8. Square hole 1; 9. Square hole 2; 10. Square groove; 11. Spring 1; 12. Connecting plate; 13. Pushing plate; 14. Mounting plate; 15. Worm gear; 16. Screw rod; 17. Threaded block; 18. Spring 2; 19. Support plate; 20. Gear; 21. Worm; 22. Rack; 23. Limiting groove; 24. Limiting plate; 25. Limiting block; 26. Slide groove; 27. Ball; 28. Fixed groove; 29. ​​Partition plate; 30. Fin; 31. Liquid inlet pipe; 32. Liquid discharge pipe. DETAILED DESCRIPTION

[0027] 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.

[0028] like Figures 1 to 7 As shown, the present invention provides a flat tube structure for a microchannel heat exchanger, comprising a header 1 and a header 2, a liquid inlet pipe 31 and a liquid discharge pipe 32 are arranged on one side of the surface of the header 1, a flat tube body 1 3 and a flat tube body 2 4 are arranged on the surface of the header 1 and the header 2 on the opposite side, a drainage hole 1 5 is respectively opened at both ends of the flat tube body 1 3 and the flat tube body 2 4, and a drainage hole 2 6 is respectively opened on the opposite side of the flat tube body 1 3 and the flat tube body 2 4;

[0029] The exhaust mechanism is arranged on one side of the interior of the discharge hole 5, and the exhaust mechanism includes a square hole 8, which is opened on one side of the interior of the discharge hole 5, and a square groove 10 is opened on one side of the interior of the discharge hole 6, and a spring 11 is fixedly installed in the inner cavity of the square groove 10, and a discharge shell 7 located in the interior of the discharge hole 6 is fixedly installed on the other end of the spring 11, and a square hole 29 is opened on one side of the discharge shell 7 close to the square hole 8, and a connecting plate 12 is fixedly installed on one side of the discharge shell 7 close to the square hole 8, and a push plate 13 is fixedly installed on one side of the connecting plate 12.

[0030] The above scheme is adopted: the fluid is drawn into the interior of the manifold 1 from the liquid inlet pipe 31, and then the fluid enters the interior of the discharge hole 5, and passes through the discharge hole 5 into the interior of the manifold 2. In the process of fluid movement, when the fluid flows in the flat tube body 3, convection is formed with the inner wall of the flat tube body 3, thereby realizing heat transfer, and then the fluid entering the interior of the manifold 2 will be guided into the flat tube body 2 4, and then the fluid will flow back from the interior of the discharge hole 5 to the interior of the manifold 1, and then will be discharged from the interior of the drain pipe 32;

[0031] When the fluid with too fast flow rate enters the discharge hole 5, the flowing fluid will push the push plate 13 to move, and the push plate 13 will drive the connecting plate 12 and the discharge shell 7 to move. When the discharge shell 7 moves, the spring 11 will be stretched, and then the square hole 29 on one side of the discharge shell 7 will overlap with the square hole 18, and then the fluid can pass through the square hole 18 and the square hole 29 to enter the inside of the discharge shell 7, and then the fluid can flow out from the inside of the discharge hole 26, and finally the discharge shell 7 is pushed by the fluid to move, so that the discharge hole 26 discharges the fluid, thereby increasing the discharge speed of the fluid, avoiding excessive pressure inside the collecting pipe 1, and thereby improving the overall heat exchange efficiency of the heat exchanger.

[0032] like Figure 5 , Figure 6 and Figure 7 As shown, it also includes: a supporting mechanism, which is embedded in the square groove 10, the supporting mechanism includes a mounting plate 14, the mounting plate 14 is fixedly connected to the inner cavity of the square groove 10, one side of the square groove 10 is rotatably connected with a worm gear 15, one side of the worm gear 15 is fixedly installed with a screw rod 16 located inside the discharge housing 7, the surface of the screw rod 16 is threadedly connected with a thread block 17, one side of the thread block 17 is fixedly installed with a spring 2 18, the other end of the spring 2 18 is fixedly installed with a supporting plate 19, and the surface of the supporting plate 19 contacts with the surface of the discharge housing 7, the top end of the square groove 10 is rotatably connected with a gear 20, the bottom end of the gear 20 is fixedly installed with a worm 21 meshing with the worm gear 15, and the side of the discharge housing 7 close to the square groove 10 is fixedly installed with a rack 22 meshing with the gear 20.

[0033] The above scheme is adopted: through the design of the supporting mechanism, when the discharge housing 7 moves, the rack 22 will be linked to move, because the rack 22 is meshed with the gear 20, and then the rack 22 will drive the gear 20 to rotate, and the gear 20 will drive the worm 21 to rotate, because the worm 21 is meshed with the worm wheel 15, and then the worm 21 will drive the worm wheel 15 to rotate, and the worm wheel 15 will drive the screw rod 16 to rotate. Since the screw rod 16 is threadedly connected with the threaded block 17, when the screw rod 16 rotates, the threaded block 17 will move on the surface of the screw rod 16, and then the threaded block 17 will drive the spring 2 18 and the support plate 19 to move. Since the surface of the support plate 19 is always in contact with the surface of the discharge housing 7, when the fluid enters the interior of the discharge housing 7, the support plate 19 can support the discharge housing 7 to prevent the position of the discharge housing 7 from moving;

[0034] When the fluid stops inside the flat tube body 3, the compressed spring 11 will reset, and then the spring 11 will pull the discharge housing 7 to reset. When the discharge housing 7 resets, the rack 22 will drive the gear 20 and the worm 21 to rotate in the direction, and the worm 21 will drive the worm wheel 15 and the screw rod 16 to rotate in the direction, and the threaded block 17, the spring 2 18 and the support plate 19 will also reset.

[0035] like Figure 6 and Figure 7 As shown, two limit grooves 23 are provided on both sides inside the square groove 10, and the two limit grooves 23 are internally slidably connected with limit plates 24, and the opposite sides of the two limit plates 24 are fixedly connected to the surface of the threaded block 17, and the other side of the worm gear 15 is fixedly installed with a limit block 25 located on one side of the mounting plate 14, and the surface of the limit block 25 is in contact with the surface of the mounting plate 14.

[0036] The above scheme is adopted: through the design of the limit groove 23 and the limit plate 24, when the threaded block 17 moves, the limit plate 24 will move inside the limit groove 23, and when the limit plate 24 moves, the threaded block 17 can be limited, thereby ensuring the stability of the movement of the threaded block 17. Through the design of the limit block 25, when the worm gear 15 rotates, it will drive the limit block 25 to rotate. Since the surface of the limit block 25 is in contact with the surface of the mounting plate 14, the worm gear 15 can be limited.

[0037] like Figure 5 and Figure 6 As shown, the top and bottom ends of the inside of the discharge hole 2 6 are provided with a slide groove 26, the top and bottom ends of the outer surface of the discharge shell 7 are rollingly connected with balls 27 located inside the slide groove 26, the top and bottom ends of the inside of the discharge hole 1 5 are provided with a fixed groove 28, and the connecting plate 12 can move inside the fixed groove 28.

[0038] The above scheme is adopted: through the design of the slide groove 26 and the ball 27, when the drainage shell 7 moves, the surface of the ball 27 contacts the surface of the slide groove 26, and then through the friction between the ball 27 and the slide groove 26, the ball 27 will roll, so that the drainage shell 7 moves more smoothly, and through the design of the fixed groove 28, when the connecting plate 12 moves, the connecting plate 12 will move inside the fixed groove 28, and then the drainage hole 5 will not interfere with the movement of the connecting plate 12, and the surface of the connecting plate 12 and the fixed groove 28 fit each other, so that the connecting plate 12 can be limited.

[0039] like Figure 2 As shown, a partition plate 29 is provided inside the collecting tube 1, and the surface of the partition plate 29 is in contact with the inner wall of the collecting tube 1. Fins 30 are provided on opposite sides of the flat tube body 1 3 and the flat tube body 2 4, and the fins 30 are of curved design.

[0040] The above scheme is adopted: through the design of the partition plate 29, when the fluid enters the interior of the collecting tube 1, the partition plate 29 can separate the fluid, thereby facilitating the discharge of the fluid from the bottom end of the collecting tube 1. Through the design of the fins 30, when the equipment is working, the flat tube body 3 and the fins 30 work together to achieve efficient heat transfer. The fluid flows in the tiny channels in the flat tube body 3 and exchanges heat with the flat tube body 3 and the fins 30. The fins 30 use their expanded heat transfer area and convection heat transfer effect.

[0041] like Figure 3 and Figure 7 As shown, a through hole is opened in the middle of the support plate 19, and the size of the through hole is larger than the screw rod 16. The second drainage holes 6 and the drainage shells 7 are grouped into four each and are respectively arranged inside the first flat tube body 3 and the second flat tube body 4.

[0042] The above scheme is adopted: through the design of the support plate 19, since a through hole is opened in the middle of the support plate 19 and the size is larger than the screw rod 16, when the support plate 19 moves, it will not interfere with the screw rod 16. Through the design of the second drainage hole 6 and the drainage shell 7, since the second drainage holes 6 and the drainage shell 7 are arranged in groups of four in the interior of the flat tube body 1 3 and the second flat tube body 4, the fluid can be discharged quickly.

[0043] The working principle and use process of the present invention:

[0044] First, the operator can inject the fluid into the interior of the manifold 1, and then the fluid will enter the interior of the drainage hole 15, and will pass through the drainage hole 15 to enter the interior of the manifold 22. In the process of fluid movement, when the fluid flows in the flat tube body 13, convection is formed with the inner wall of the flat tube body 3, thereby realizing heat transfer. Then, the fluid entering the interior of the manifold 22 will be diverted to the flat tube body 24, and then discharged from the interior of the drain pipe 32. When the fluid enters the interior of the drainage hole 15, the flowing fluid will push the push plate 13 to move, and the push plate 13 will drive the connecting plate 12 and the drainage shell 7 to move. Then, the square hole 29 on one side of the drainage shell 7 will overlap with the square hole 18, and then the fluid can pass through the square hole 18 and the square hole 29 to enter the interior of the drainage shell 7. Then, the fluid can flow out from the interior of the drainage hole 26, thereby improving the efficiency of fluid discharge.

[0045] When the discharge housing 7 moves, the rack 22 will move in conjunction, the rack 22 will drive the gear 20 and the worm 21 to rotate, the worm 21 will drive the worm wheel 15 to rotate, the worm wheel 15 will drive the screw 16 to rotate, the threaded block 17 will move on the surface of the screw 16, and then the threaded block 17 will drive the spring 2 18 and the support plate 19 to move. Since the surface of the support plate 19 is always on the surface of the discharge housing 7, when the fluid enters the discharge housing 7, the support plate 19 can support the discharge housing 7 to prevent the position of the discharge housing 7 from moving, and finally complete the operation process.

[0046] 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.

[0047] 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 flat tube structure for a microchannel heat exchanger, comprising a first header (1) and a second header (2), characterized in that: A liquid inlet pipe (31) and a liquid discharge pipe (32) are provided on one side of the surface of the collecting pipe one (1), a flat tube body one (3) and a flat tube body two (4) are provided on the surface of the collecting pipe one (1) and the collecting pipe two (2) on the opposite side, a drainage hole one (5) is provided at both ends of the flat tube body one (3) and the flat tube body two (4), and a drainage hole two (6) is provided on the opposite side of the flat tube body one (3) and the flat tube body two (4); An exhaust mechanism is arranged on one side of the interior of the first discharge hole (5), the exhaust mechanism comprising a square hole (8), the square hole (8) being opened on one side of the interior of the first discharge hole (5), a square groove (10) being opened on one side of the interior of the second discharge hole (6), a spring (11) being fixedly installed in the inner cavity of the square groove (10), a discharge shell (7) located in the interior of the second discharge hole (6) being fixedly installed at the other end of the spring (11), a square hole (9) being opened on one side of the discharge shell (7) close to the first square hole (8), a connecting plate (12) being fixedly installed on one side of the discharge shell (7) close to the first square hole (8), and a push plate (13) being fixedly installed on one side of the connecting plate (12); The invention also comprises: a support mechanism, which is arranged in the inner part of the square groove (10), the support mechanism comprising a mounting plate (14), the mounting plate (14) being fixedly connected to the inner cavity of the square groove (10), a worm gear (15) being rotatably connected to one side of the square groove (10), a screw rod (16) located inside the discharge housing (7) being fixedly mounted to one side of the worm gear (15), a threaded block (17) being threadedly connected to the surface of the screw rod (16), and a threaded block (17) being fixedly mounted to one side of the screw rod (16). A spring (18) is fixedly installed, a support plate (19) is fixedly installed on the other end of the spring (18), and the surface of the support plate (19) contacts the surface of the discharge housing (7); the top end of the inside of the square groove (10) is rotatably connected to a gear (20), the bottom end of the gear (20) is fixedly installed with a worm (21) meshing with the worm wheel (15), and a rack (22) meshing with the gear (20) is fixedly installed on one side of the discharge housing (7) close to the square groove (10); Two limiting grooves (23) are provided on both sides of the interior of the square groove (10), the interiors of the two limiting grooves (23) are slidably connected to limiting plates (24), and opposite sides of the two limiting plates (24) are fixedly connected to the surface of the threaded block (17); The top and bottom ends of the drainage hole 2 (6) are provided with a slide groove (26), and the top and bottom ends of the outer surface of the drainage shell (7) are rollingly connected with a ball (27) located inside the slide groove (26); the top and bottom ends of the drainage hole 1 (5) are provided with a fixed groove (28), and the connecting plate (12) can move inside the fixed groove (28).

2. The flat tube structure for a microchannel heat exchanger according to claim 1, characterized in that: A limit block (25) located on one side of the mounting plate (14) is fixedly mounted on the other side of the worm wheel (15), and a surface of the limit block (25) is in contact with a surface of the mounting plate (14).

3. The flat tube structure for a microchannel heat exchanger according to claim 1, characterized in that: A partition plate (29) is provided inside the collecting pipe one (1), and a surface of the partition plate (29) is in contact with an inner wall of the collecting pipe one (1).

4. The flat tube structure for a microchannel heat exchanger according to claim 1, characterized in that: The flat tube body one (3) and the flat tube body two (4) are both provided with fins (30) on opposite sides, and the fins (30) are of a curved design.

5. The flat tube structure for a microchannel heat exchanger according to claim 1, characterized in that: A through hole is provided in the middle of the support plate (19), and the size of the through hole is larger than the screw rod (16).

6. The flat tube structure for a microchannel heat exchanger according to claim 1, characterized in that: The drainage holes (2) and the drainage shells (7) are grouped in groups of four and are respectively arranged inside the flat tube body (1) and the flat tube body (2) (4).

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