Flat tube and fin structure of parallel flow heat exchanger

Abstract

The utility model discloses a flat tube and fin structure of a parallel flow heat exchanger, which belongs to the technical field of heat exchangers and comprises a plurality of flat tubes, a heat insulation plate is arranged at one end of each flat tube, headers are welded at two ends of each heat insulation plate, fins are arranged between adjacent flat tubes, a heat conduction plate is arranged at one end of each flat tube far away from the heat insulation plate, and through holes are arranged in the heat conduction plates. The connecting assembly is arranged, the push rod pushes the moving plate to slide on the fixing rod, the spring is compressed, then the two ends of the flat pipe are placed in the clamping grooves of the vertical seats, the push rod is loosened, the spring elastically stretches to push the moving plate to reset, the clamping column at one end of the moving plate enters the clamping holes in the two ends of the flat pipe, and the effect of limiting and fixing the flat pipe is achieved. The push rod is pushed to push the moving plate to move, the moving plate moves to drive the clamping columns to move out of the clamping holes of the flat pipes, the two ends of the flat pipes can be moved out of the clamping grooves of the vertical bases, and the single flat pipes can be conveniently disassembled, assembled and replaced through the connecting assemblies.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to a flat tube and fin structure of a parallel flow heat exchanger. Background Art

[0002] Microchannel aluminum flat tube (also known as "parallel flow aluminum flat tube") is a thin-walled porous flat tubular material made of refined aluminum rods through hot extrusion and surface zinc spraying for corrosion protection. It is mainly used in air-conditioning systems for various refrigerants. As a pipeline component carrying new environmentally friendly refrigerants, it adopts a new environmentally friendly system and is a key material for the new generation of parallel flow microchannel air-conditioning heat exchangers.

[0003] Chinese patent application No. 2022208949077 discloses a flat tube assembly for a microchannel heat exchanger, including a microchannel body, the microchannel body including a header, flat tubes, fins, a heat insulation plate and a heat conduction plate, the width of the microchannel body is provided with a mirror-set header on both sides, the inner side of the header is provided with a plurality of connecting grooves at equal intervals up and down, the connecting grooves on the inner side of the header are connected to the flat tubes, the outer periphery of both ends of the flat tubes are sleeved with a sealing connecting plate, fins are provided between the inner side surfaces of the header and on the inner sides of every two adjacent flat tubes, and a heat conduction plate is provided between the edges of the inner side surfaces of the header. Compared with the existing microchannel heat exchanger, the utility model can be easily disassembled and replaced by a new one when the flat tubes inside the heat exchanger are damaged or aged through design, without replacing the entire heat exchanger, thereby reducing maintenance costs.

[0004] In the above-mentioned patent, when a single flat tube is damaged and needs to be replaced, since the connecting plates at both ends of the flat tube are in the connecting grooves of the collecting pipe, it is necessary to disassemble multiple flat tubes at the same time when disassembling the single flat tube, which is not convenient for quick disassembly, assembly and replacement of a single flat tube. At the same time, the induced draft fan in the heat transfer plate of the original device does not have a dust-proof function, and the induced draft fan is likely to blow dust and other impurities toward the fins. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a flat tube and fin structure of a parallel flow heat exchanger, which has the characteristic of facilitating rapid disassembly, assembly and replacement of a single flat tube.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a flat tube and fin structure of a parallel flow heat exchanger, comprising a plurality of flat tubes, a heat insulation plate being provided at one end of the plurality of flat tubes, a header being welded to both ends of the heat insulation plate, fins being provided between adjacent flat tubes, a heat conduction plate being provided at one end of the flat tube away from the heat insulation plate, a through hole being provided in the heat conduction plate, an induced draft fan being provided in the through hole, a dustproof component being provided on one side of the induced draft fan, and the flat tubes and the header being connected by a connecting component.

[0007] Preferably, the connecting assembly includes a vertical seat, a slot, a cavity, a hole, a fixed rod, a movable plate, a column, a spring, a limit assembly and a push rod, wherein a vertical seat is provided at one end of the collecting pipe, a plurality of slots corresponding to the flat tubes are provided at one end of the vertical seat, a cavity is provided in the vertical seat, a fixed rod is provided at a position corresponding to the slot in the cavity, a movable plate is slidably connected to the fixed rod, a push rod is provided at the lower side of the front end of the movable plate, a spring is provided on the outside of the fixed rod at one end of the movable plate, a column is provided at one end of the movable plate at a position corresponding to the slot, holes corresponding to the column are provided at both ends of the flat tube, and a limit assembly is provided at a position corresponding to the movable plate in the cavity.

[0008] Preferably, the limiting assembly includes a rotating shaft, a baffle, a magnetic block 1 and a magnetic block 2, wherein a rotating shaft is provided at a position in the cavity corresponding to the movable plate, a baffle is provided at one end of the rotating shaft, a magnetic block 1 is provided at one end of the baffle, and a magnetic block 2 is provided at a position at one end of the movable plate corresponding to the magnetic block 1.

[0009] Preferably, the rotating shaft and the vertical seat are connected via a damping rotation, and when the movable plate is not pushed, one end of the movable plate is flush with one end of the baffle.

[0010] Preferably, the dustproof component includes a dustproof plate, a protrusion, a groove, a fixing bolt, a fixing hole and a handle, wherein a dustproof plate is provided on one side of the induced draft fan, protrusions are provided at both ends of the dustproof plate, a pull handle is provided at one end of the protrusion, grooves corresponding to the protrusions are provided at both ends of the through hole, the protrusion and the heat conduction plate are connected by a fixing bolt, and a fixing hole corresponding to the fixing bolt is provided in the groove.

[0011] Preferably, after the protrusion enters the groove, the side of the protrusion is in close contact with the inner wall of the groove, and a through hole corresponding to the fixing bolt is provided in the protrusion.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model sets a connecting assembly, and pushes the movable plate to slide on the fixed rod through the push rod, the spring is compressed, and then the two ends of the flat tube are placed in the clamping groove of the vertical seat, and the push rod is released, and the spring stretches to push the movable plate to reset, and the clamping column at one end of the movable plate enters the clamping hole at both ends of the flat tube, so as to achieve the effect of limiting and fixing the flat tube, and pushing the push rod to push the movable plate to move, and the movement of the movable plate drives the clamping column to move out of the clamping hole of the flat tube, so that the two ends of the flat tube can be removed from the clamping groove of the vertical seat. The setting of the connecting assembly facilitates the disassembly and replacement of a single flat tube.

[0014] 2. The utility model sets a dustproof component, puts the dustproof plate into the through hole, and at the same time, the protrusions at both ends of the dustproof plate enter the grooves, and then screws the fixing bolts into the fixing holes to achieve the effect of limiting and fixing the protrusions and the dustproof plate. When the induced draft fan is blowing air, the dustproof plate plays a dustproof role, preventing the induced draft fan from blowing dust and other impurities toward the fins. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 This is an exploded perspective view of the utility model;

[0017] Figure 3 This is a three-dimensional diagram of the vertical seat of the utility model;

[0018] Figure 4 For this utility model Figure 3 A magnified view of point A;

[0019] Figure 5 This is a three-dimensional diagram of the baffle of the utility model;

[0020] In the figure: 1. Flat tube; 2. Connecting assembly; 21. Vertical seat; 22. Slot; 23. Cavity; 24. Hole; 25. Fixing rod; 26. Moving plate; 27. Clamping column; 28. Spring; 29. ​​Limiting assembly; 291. Rotating shaft; 292. Baffle; 293. Magnetic block 1; 294. Magnetic block 2; 210. Push rod; 3. Dustproof assembly; 31. Dustproof plate; 32. Bump; 33. Groove; 34. Fixing bolt; 35. Fixing hole; 36. Handle; 4. Heat conduction plate; 5. Through hole; 6. Collecting pipe; 7. Heat insulation board; 8. Fin; 9. Induced draft fan. DETAILED DESCRIPTION

[0021] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1-5 The utility model provides the following technical solutions: a flat tube and fin structure of a parallel flow heat exchanger, comprising a plurality of flat tubes 1, a heat insulation plate 7 being provided at one end of the plurality of flat tubes 1, a header 6 being welded at both ends of the heat insulation plate 7, fins 8 being provided between adjacent flat tubes 1, a heat conduction plate 4 being provided at the end of the flat tube 1 away from the heat insulation plate 7, a through hole 5 being provided in the heat conduction plate 4, an induced draft fan 9 being provided in the through hole 5, a dustproof component 3 being provided on one side of the induced draft fan 9, and the flat tube 1 and the header 6 being connected by a connecting component 2.

[0024] Specifically, the connecting component 2 includes a vertical seat 21, a slot 22, a cavity 23, a hole 24, a fixed rod 25, a movable plate 26, a column 27, a spring 28, a limit assembly 29 and a push rod 210, wherein a vertical seat 21 is provided at one end of the collecting pipe 6, a plurality of slots 22 corresponding to the flat tube 1 are provided at one end of the vertical seat 21, a cavity 23 is provided in the vertical seat 21, a fixed rod 25 is provided at a position corresponding to the slot 22 in the cavity 23, a movable plate 26 is slidably connected to the fixed rod 25, a push rod 210 is provided on the lower side of the front end of the movable plate 26, a spring 28 is provided on the outside of the fixed rod 25 at one end of the movable plate 26, a column 27 is provided at one end of the movable plate 26 corresponding to the slot 22, holes 24 corresponding to the column 27 are provided at both ends of the flat tube 1, and a limit assembly 29 is provided at a position corresponding to the movable plate 26 in the cavity 23.

[0025] By adopting the above technical solution, the push rod 210 pushes the movable plate 26 to slide on the fixed rod 25, the spring 28 is compressed, and then the two ends of the flat tube 1 are placed in the card slots 22 of the vertical seat 21, and the push rod 210 is released. The spring 28 stretches and pushes the movable plate 26 to reset, and the clamping column 27 at one end of the movable plate 26 enters the clamping hole 24 at both ends of the flat tube 1, so as to achieve the effect of limiting and fixing the flat tube 1. The push rod 210 is pushed to push the movable plate 26 to move. The movement of the movable plate 26 drives the clamping column 27 to move out of the clamping hole 24 of the flat tube 1, so that the two ends of the flat tube 1 can be removed from the clamping slots 22 of the vertical seat 21. By providing the connecting component 2, it is convenient to disassemble and replace a single flat tube 1.

[0026] Specifically, the limiting assembly 29 includes a rotating shaft 291, a baffle 292, a magnetic block 1 293 and a magnetic block 294, wherein the rotating shaft 291 is provided at a position corresponding to the movable plate 26 in the cavity 23, the baffle 292 is provided at one end of the rotating shaft 291, the magnetic block 1 293 is provided at one end of the baffle 292, and the magnetic block 294 is provided at a position corresponding to the magnetic block 1 293 at one end of the movable plate 26.

[0027] By adopting the above technical solution, when there is no need to move the movable plate 26, the baffle 292 is moved, and the baffle 292 rotates in the cavity 23 through the rotating shaft 291. After the baffle 292 rotates to one end of the movable plate 26, the magnetic block 1 293 on the baffle 292 is adsorbed by the magnetic block 2 294 at one end of the movable plate 26. The baffle 292 limits the movable plate 26, thereby preventing the movable plate 26 from being moved accidentally and causing the clamping column 27 to move out of the clamping hole 24 at one end of the flat tube 1.

[0028] Specifically, the rotating shaft 291 is connected to the vertical seat 21 through a damping rotation. When the movable plate 26 is not pushed, one end of the movable plate 26 is flush with one end of the baffle 292 .

[0029] By adopting the above technical solution, the rotating shaft 291 is not easy to rotate. When the movable plate 26 is not pushed, one end of the movable plate 26 is flush with one end of the baffle 292, so that the baffle 292 has a better limiting effect on the movable plate 26.

[0030] When the present embodiment is used, when the flat tube 1 and fin 8 structure of the parallel flow heat exchanger is used, the device is installed in a suitable position, and the induced draft fan 9 in the heat conducting plate 4 absorbs the heat generated by the operation of the internal components of the equipment into the heat exchanger, and performs heat dissipation and cooling through the fin 8 and the flat tube 1. By setting the connecting component 2, the push rod 210 is used to push the movable plate 26 to slide on the fixed rod 25, and the spring 28 is compressed. Then, the two ends of the flat tube 1 are placed in the card groove 22 of the vertical seat 21, and the push rod 210 is released. The spring 28 stretches and pushes the movable plate 26 to reset. The card column 27 at one end of the movable plate 26 enters the card hole 24 at both ends of the flat tube 1, so as to achieve the effect of limiting and fixing the flat tube 1, and the push rod 210 is pushed to move The plate 26 moves, and the movable plate 26 drives the clamping column 27 to be removed from the clamping hole 24 of the flat tube 1, so that the two ends of the flat tube 1 can be removed from the clamping groove 22 of the vertical seat 21. By setting the connecting component 2, it is convenient to disassemble and replace a single flat tube 1. By setting the limiting component 29, when there is no need to move the movable plate 26, by toggling the baffle 292, the baffle 292 rotates in the cavity 23 through the rotating shaft 291. After the baffle 292 rotates to one end of the movable plate 26, the magnetic block 1 293 on the baffle 292 is adsorbed by the magnetic block 2 294 at one end of the movable plate 26. The baffle 292 limits the movable plate 26 to avoid the movable plate 26 from moving out of the clamping column 27 from the clamping hole 24 at one end of the flat tube 1 due to accidental movement.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that the dustproof component 3 includes a dustproof plate 31, a protrusion 32, a groove 33, a fixing bolt 34, a fixing hole 35 and a handle 36, wherein a dustproof plate 31 is provided on one side of the induced draft fan 9, protrusions 32 are provided at both ends of the dustproof plate 31, a handle 36 is provided at one end of the protrusion 32, grooves 33 corresponding to the protrusion 32 are provided at both ends of the through hole 5, the protrusion 32 is connected to the heat conduction plate 4 by a fixing bolt 34, and a fixing hole 35 corresponding to the fixing bolt 34 is provided in the groove 33.

[0033] By adopting the above technical solution, the dustproof plate 31 is placed in the through hole 5, and at the same time, the protrusions 32 at both ends of the dustproof plate 31 enter the grooves 33, and then the fixing bolts 34 are screwed into the fixing holes 35, so as to achieve the effect of limiting and fixing the protrusions 32 and the dustproof plate 31. When the induced draft fan 9 is blowing air, the dustproof plate 31 plays a dust-proof role, preventing the induced draft fan 9 from blowing dust and other impurities toward the fins 8.

[0034] Specifically, after the protrusion 32 enters the groove 33 , the side of the protrusion 32 is in close contact with the inner wall of the groove 33 , and a through hole corresponding to the fixing bolt 34 is provided in the protrusion 32 .

[0035] By adopting the above technical solution, after the protrusion 32 enters the groove 33 , the protrusion 32 is more firmly fixed in the groove 33 , and the fixing bolt 34 can pass through the protrusion 32 and be screwed into the fixing hole 35 .

[0036] When this embodiment is used, the dustproof component 3 is set, and the dustproof plate 31 is placed in the through hole 5. At the same time, the protrusions 32 at both ends of the dustproof plate 31 enter the grooves 33, and then the fixing bolts 34 are screwed into the fixing holes 35 to achieve the effect of limiting and fixing the protrusions 32 and the dustproof plate 31. When the induced draft fan 9 is blowing air, the dustproof plate 31 plays a dustproof role, preventing the induced draft fan 9 from blowing dust and other impurities toward the fins 8.

[0037] The structure and working principle of the flat tube 1, heat conducting plate 4, through hole 5, manifold 6, heat insulation plate 7, fin 8 and induced draft fan 9 in the utility model have been disclosed in Chinese patent application No. 2022208949077, which discloses a flat tube assembly for a microchannel heat exchanger. Its working principle is that the induced draft fan 9 in the heat conducting plate 4 absorbs the heat generated by the operation of the internal components of the equipment into the heat exchanger, and dissipates heat and cools it through the fin 8 and the flat tube 1.

[0038] The working principle and use process of the present invention: When the flat tube 1 and fin 8 structure of the parallel flow heat exchanger are used, the device is installed in a suitable position, and the induced draft fan 9 in the heat conducting plate 4 absorbs the heat generated by the operation of the internal components of the equipment into the heat exchanger, and performs heat dissipation and cooling through the fin 8 and the flat tube 1. By setting the connecting component 2, the push rod 210 pushes the movable plate 26 to slide on the fixed rod 25, and the spring 28 is compressed. Then, the two ends of the flat tube 1 are placed in the card slot 22 of the vertical seat 21, and the push rod 210 is released. The spring 28 stretches and pushes the movable plate 26 to reset. The clamping column 27 at one end of the movable plate 26 enters the clamping hole 24 at both ends of the flat tube 1 to achieve the effect of limiting and fixing the flat tube 1. Pushing the push rod 210 pushes the movable plate 26 to move. The movement of the movable plate 26 drives the clamping column 27 to move out of the clamping hole 24 of the flat tube 1, and the two ends of the flat tube 1 can be removed from the clamping slot 22 of the vertical seat 21. The connecting assembly 2 is convenient for disassembling and replacing a single flat tube 1. By setting a limit assembly 29, when the movable plate 26 does not need to be moved, the baffle 292 is toggled, and the baffle 292 rotates in the cavity 23 through the rotating shaft 291. After the baffle 292 rotates to one end of the movable plate 26, the magnetic block 293 on the baffle 292 is attracted to the magnetic block 294 at one end of the movable plate 26. The baffle 292 plays a limiting role on the movable plate 26 to avoid the movable plate 26 from being accidentally moved. The movement causes the clamping column 27 to be removed from the clamping hole 24 at one end of the flat tube 1. By setting the dustproof component 3, the dustproof plate 31 is placed in the through hole 5, and at the same time, the protrusions 32 at both ends of the dustproof plate 31 enter the groove 33, and then the fixing bolts 34 are screwed into the fixing holes 35 to achieve the effect of limiting and fixing the protrusions 32 and the dustproof plate 31. When the induced draft fan 9 is blowing air, the dustproof plate 31 plays a dustproof role to prevent the induced draft fan 9 from blowing dust and other impurities toward the fins 8.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flat tube and fin structure of a parallel flow heat exchanger, comprising a plurality of flat tubes (1), a heat insulation plate (7) being provided at one end of the plurality of flat tubes (1), a header (6) being welded to both ends of the heat insulation plate (7), fins (8) being provided between adjacent flat tubes (1), a heat conduction plate (4) being provided at one end of the flat tube (1) away from the heat insulation plate (7), a through hole (5) being provided in the heat conduction plate (4), and an induced draft fan (9) being provided in the through hole (5), characterized in that: A dustproof component (3) is provided on one side of the induced draft fan (9), and the flat tube (1) and the header (6) are connected via a connecting component (2).

2. The flat tube and fin structure of a parallel flow heat exchanger according to claim 1, characterized in that: The connecting assembly (2) comprises a vertical seat (21), a clamping groove (22), a cavity (23), a clamping hole (24), a fixing rod (25), a movable plate (26), a clamping column (27), a spring (28), a limiting assembly (29) and a push rod (210), wherein one end of the manifold (6) is provided with a vertical seat (21), one end of the vertical seat (21) is provided with a plurality of clamping grooves (22) corresponding to the flat tubes (1), a cavity (23) is provided in the vertical seat (21), and positions in the cavity (23) corresponding to the clamping grooves (22) are provided. A fixed rod (25) is provided, a movable plate (26) is slidably connected to the fixed rod (25), a push rod (210) is provided on the lower side of the front end of the movable plate (26), a spring (28) is provided on the outer side of the fixed rod (25) at one end of the movable plate (26), a clamping column (27) is provided at a position corresponding to the clamping groove (22) at one end of the movable plate (26), clamping holes (24) corresponding to the clamping column (27) are provided at both ends of the flat tube (1), and a limiting component (29) is provided at a position corresponding to the movable plate (26) in the cavity (23).

3. The flat tube and fin structure of a parallel flow heat exchanger according to claim 2, characterized in that: The limiting assembly (29) comprises a rotating shaft (291), a baffle (292), a first magnetic block (293) and a second magnetic block (294), wherein the rotating shaft (291) is provided at a position corresponding to the movable plate (26) in the cavity (23), the baffle (292) is provided at one end of the rotating shaft (291), the first magnetic block (293) is provided at one end of the baffle (292), and the second magnetic block (294) is provided at a position corresponding to the first magnetic block (293) at one end of the movable plate (26).

4. The flat tube and fin structure of a parallel flow heat exchanger according to claim 3, characterized in that: The rotating shaft (291) is connected to the vertical seat (21) through damping rotation, and when the movable plate (26) is not pushed, one end of the movable plate (26) is flush with one end of the baffle (292).

5. The flat tube and fin structure of a parallel flow heat exchanger according to claim 1, characterized in that: The dustproof assembly (3) includes a dustproof plate (31), a protrusion (32), a groove (33), a fixing bolt (34), a fixing hole (35) and a pull handle (36), wherein a dustproof plate (31) is provided on one side of the induced draft fan (9), protrusions (32) are provided at both ends of the dustproof plate (31), a pull handle (36) is provided at one end of the protrusion (32), grooves (33) corresponding to the protrusion (32) are provided at both ends of the through hole (5), the protrusion (32) and the heat conducting plate (4) are connected by a fixing bolt (34), and a fixing hole (35) corresponding to the fixing bolt (34) is provided in the groove (33).

6. The flat tube and fin structure of a parallel flow heat exchanger according to claim 5, characterized in that: After the protrusion (32) enters the groove (33), the side of the protrusion (32) is in close contact with the inner wall of the groove (33), and a through hole corresponding to the fixing bolt (34) is provided in the protrusion (32).

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