CN210198180U - Heat exchanger - Google Patents

Abstract

The utility model relates to the technical field of heat exchange equipment, in particular to a heat exchanger, which comprises a frame, wherein a first connecting pipe is arranged on the frame, and an air inlet pipe is arranged on the first connecting pipe; a second connecting pipe is arranged on the rack, and an air outlet pipe is arranged on the second connecting pipe; the rack is provided with a heat exchange mechanism, and the heat exchange mechanism comprises a plurality of heat exchange units; the heat exchange unit comprises a third connecting pipe, and a fourth connecting pipe is arranged on the third connecting pipe; a fourth connecting pipe on the heat exchange unit is connected with a third connecting pipe on the adjacent heat exchange unit through the first connecting assembly; a third connecting pipe of the heat exchange unit at one end of the heat exchange mechanism is connected with the first connecting pipe through the second connecting assembly; and the fourth connecting pipe and the second connecting pipe of the heat exchange unit at the other end are also connected through the second connecting component. The utility model discloses resources are saved's effect has.

Description

Heat exchanger

Technical Field

The utility model belongs to the technical field of indirect heating equipment's technique and specifically relates to a heat exchanger is related to.

Background

Heat exchangers are devices used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements, and are an industrial application of convective and conductive heat transfer.

At present, an existing heat exchanger includes a frame, a first connecting pipe is arranged on the frame, an air inlet pipe is arranged on the first connecting pipe, and a heat exchange mechanism is connected to the first connecting pipe; a second connecting pipe connected with the heat exchange mechanism is welded on the rack, and an air outlet pipe is arranged on the second connecting pipe; the heat exchange mechanism is formed by connecting a plurality of heat exchange units, each heat exchange unit comprises a third connecting pipe, and a fourth connecting pipe is welded on each third connecting pipe; a third connecting pipe on the heat exchange unit is welded with a fourth connecting pipe on the adjacent heat exchange unit; a third connecting pipe close to the first connecting pipe is welded with the first connecting pipe; and a fourth connecting pipe close to the second connecting pipe is welded with the second connecting pipe. The hot gas enters into the first connecting pipe through the air inlet pipe, then enters into the fourth connecting pipe through the third connecting pipe, then enters into the second connecting pipe, and finally is discharged from the air outlet pipe.

The above prior art solutions have the following drawbacks: because the above-mentioned pipe fittings are all welded together, when the third connecting pipe or the fourth connecting pipe in one of the heat exchange units is damaged, the whole heat exchanger needs to be replaced, which wastes resources.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art existence, the utility model aims to provide a heat exchanger, the first coupling assembling and the second coupling assembling of setting can be changed solitary heat transfer unit to resources are saved.

The above object of the present invention is achieved by the following technical solutions:

a heat exchanger comprises a frame, wherein a first connecting pipe is arranged on the frame, and an air inlet pipe is arranged on the first connecting pipe; a second connecting pipe is arranged on the rack, and an air outlet pipe is arranged on the second connecting pipe; the rack is provided with a heat exchange mechanism, and the heat exchange mechanism comprises a plurality of heat exchange units; the heat exchange unit comprises a third connecting pipe, and a fourth connecting pipe is arranged on the third connecting pipe; the rack is provided with a first connecting assembly, and the fourth connecting pipe on the heat exchange unit is connected with the third connecting pipe on the adjacent heat exchange unit through the first connecting assembly; a second connecting assembly is arranged on the rack, and the third connecting pipe of the heat exchange unit on one end of the heat exchange mechanism is connected with the first connecting pipe through the second connecting assembly; and the other end of the heat exchange unit is provided with the fourth connecting pipe and the second connecting pipe which are also connected through the second connecting component.

By adopting the technical scheme, hot gas enters the first connecting pipe through the gas inlet pipe, then enters the heat exchange mechanism, then enters the second connecting pipe, and finally flows out of the gas outlet pipe; when steam circulates in heat exchange mechanism, can enter into in the third connecting pipe through second coupling assembling earlier, then enter into in the fourth connecting pipe through first coupling assembling, then enter into the third connecting pipe in the adjacent heat transfer unit, enter into in the fourth connecting pipe through first coupling assembling, enter into in the second connecting pipe through second coupling assembling at last. When the third connecting pipe and the fourth connecting pipe in one of the heat exchange units are damaged, the first connecting assembly is adjusted to separate the heat exchange unit from the adjacent heat exchange unit, and a new annular heat unit is replaced; when the heat exchange unit close to the first connecting pipe or the second connecting pipe is damaged, the second connecting assembly is adjusted to separate the first connecting pipe or the second connecting pipe from the heat exchange unit, and then the first connecting assembly is adjusted to enable the damaged heat exchange unit to be detachable; the first connecting assembly and the second connecting assembly can replace the independent heat exchange unit, so that resources are saved.

The utility model discloses further set up to: the first connecting assembly comprises first bent pipes, first brackets are arranged at two ends of each first bent pipe, first internal threads are formed in each of the two first brackets, and rubber pads are arranged in each of the two first internal brackets; an annular groove is formed in one end, far away from the fourth connecting pipe, of the third connecting pipe, and a C-shaped clamping ring is clamped in the annular groove; a connecting block is connected to the third connecting pipe in a sliding manner, an external thread in threaded connection with the first internal thread is formed in the connecting block, a groove is formed in one end, close to the external thread, of the connecting block, and the C-shaped clamping ring abuts against the bottom wall of the groove; the same annular groove is also formed in one end, far away from the third connecting pipe, of the fourth connecting pipe, and the same C-shaped clamping ring is clamped in the annular groove in the fourth connecting pipe; the same connecting blocks are arranged on the fourth connecting pipe.

Through adopting above-mentioned technical scheme, slide two connecting blocks respectively earlier and connect on the lateral wall of third connection and fourth connecting pipe, then make C type snap ring joint in the ring channel of third connecting pipe and fourth connecting pipe, then with the connecting block on heat exchange unit's the third connecting pipe and the connecting block on adjacent heat exchange unit's the fourth connecting pipe towards the direction motion that is close to first return bend, make the first internal thread threaded connection on heat exchange unit third connecting pipe and one of them bracket on the first return bend, connecting block on adjacent heat exchange unit's the fourth connecting pipe and the first internal thread threaded connection on the other bracket on the first return bend, thereby make and be connected through first connecting assembly between heat exchange unit and the adjacent heat exchange unit, and can dismantle two adjacent heat exchange units through first connecting assembly.

The utility model discloses further set up to: the first connecting assembly further comprises a sealing ring positioned in the first bracket, one end of the sealing ring close to the connecting block is sleeved on the outer side wall of the third connecting pipe or the fourth connecting pipe, and a first chamfer angle is formed in the outer side wall; a second chamfer is formed on the outer side wall of one end, far away from the connecting block, of the sealing ring, and a third chamfer is formed on one end, far away from the first chamfer, of the second chamfer; the second chamfer angle tightly abuts against the rubber pad, and the third chamfer angle tightly abuts against the inner side wall of the rubber pad.

Through adopting above-mentioned technical scheme, when the external screw thread on the connecting block and the first internal thread threaded connection of first bracket, the connecting block can be towards the direction motion of being close to first bracket, the connecting block can exert force to the sealing washer, make the sealing washer compression, the third chamfer is the rubber pad inside wall of contradicting in the time of the sealing washer compression, the tight rubber pad of second chamfer, after the sealing washer compression, gaseous just can not flee between connecting block and first bracket, the leakproofness when the sealing washer of setting has improved connecting block and first bracket connection.

The utility model discloses further set up to: the gasket is arranged between the sealing ring and the connecting block, the gasket sleeve is arranged on the outer side wall of the third connecting pipe or the outer side wall of the fourth connecting pipe, one end of the gasket is tightly abutted to the connecting block, and the other end of the gasket is tightly abutted to the sealing ring.

Through adopting above-mentioned technical scheme, when the sealing washer when first bracket direction motion, the gasket on the connecting block can drive the sealing washer and move towards being close to first bracket, when the external screw thread on the connecting block and the first internal thread threaded connection on the first bracket, the revolving force of connecting block drives the gasket and rotates, the gasket can drive the sealing washer and be linear motion, it is rotatory to prevent that the revolving force of connecting block from driving the sealing washer to improve stability and the leakproofness of sealing washer in first bracket.

The utility model discloses further set up to: the second connecting assembly comprises an adjusting pipe, a second bracket is arranged on the adjusting pipe, a second internal thread is formed in the second bracket, a rubber pad is also arranged in the second bracket, and the third connecting pipe is provided with a connecting block.

Through adopting above-mentioned technical scheme, make the connecting block on third connecting pipe or the fourth connecting pipe move towards the direction of second bracket, make the external screw thread on the connecting block and the second internal thread threaded connection on the second bracket, behind second internal thread and the connecting block threaded connection, the third connecting pipe will be connected on first connecting pipe through second coupling assembling, and the fourth connecting pipe passes through second coupling assembling and connects on the second connecting pipe.

The utility model discloses further set up to: the rack is provided with a plurality of heat exchange mechanisms along the horizontal direction; a plurality of heat exchange units in the heat exchange mechanism are arranged along the vertical direction of the rack; the heat exchange unit also comprises a second bent pipe, one end of the second bent pipe is welded with the third connecting pipe, and the other end of the second bent pipe is welded with the third connecting pipe; the third connecting pipe is located above the fourth connecting pipe, and the third connecting pipe and the fourth connecting pipe are not located on the same vertical plane.

By adopting the technical scheme, the arranged multiple heat exchange mechanisms can improve the heat exchange efficiency; the third connecting pipe and the fourth connecting pipe are not located on the same vertical plane, so that the space can be saved, a plurality of heat exchange units can be arranged on the rack, and the heat exchange efficiency is improved.

The utility model discloses further set up to: the third connecting pipe and the fourth connecting pipe are both obliquely arranged, and the relative height of one end, far away from the fourth connecting pipe, of the third connecting pipe is higher than that of one end, close to the fourth connecting pipe, of the third connecting pipe; the relative height of the fourth connecting pipe close to the third connecting pipe is higher than the relative height of the fourth connecting pipe far away from the third connecting pipe.

Through adopting above-mentioned technical scheme, third connecting pipe and the slope of fourth connecting pipe set up and to make the better flow of steam.

The utility model discloses further set up to: a support plate is arranged on the rack, and a first through hole for the third connecting pipe to pass through is formed in the support plate; and a second through hole for the fourth connecting pipe to pass through is formed in the supporting plate.

Through adopting above-mentioned technical scheme, the backup pad that sets up can support third connecting pipe and fourth connecting pipe, improves the stability of third connecting pipe and fourth connecting pipe in the frame.

To sum up, the utility model discloses a beneficial technological effect does:

1. the single heat exchange unit can be replaced, so that resources are saved;

2. the sealing ring is arranged to improve the sealing property when the connecting block is connected with the first bracket;

3. the gasket that sets up prevents that the revolving force of connecting block from driving the sealing washer rotatory to improve the stability and the leakproofness of sealing washer in first bracket.

Drawings

FIG. 1 is a schematic structural view of a heat exchanger according to the present invention;

fig. 2 is a side view of the heat exchanger according to the present invention, showing a schematic view of a second elbow structure;

FIG. 3 is an exploded view of the heat exchange unit of the present invention;

fig. 4 is a schematic structural view of a first elbow pipe according to the present invention;

fig. 5 is a schematic structural view of the connecting block of the present invention;

fig. 6 is a partially enlarged view of a in fig. 2.

Reference numerals: 1. a frame; 11. a first connecting pipe; 12. a second connecting pipe; 13. an air inlet pipe; 14. an air outlet pipe; 2. a heat exchange mechanism; 3. a heat exchange unit; 31. a second bend pipe; 32. a third connecting pipe; 33. a fourth connecting pipe; 34. an annular groove; 4. a first connection assembly; 41. a first bend pipe; 42. a first bracket; 421. a first internal thread; 43. a rubber pad; 44. a C-shaped snap ring; 45. connecting blocks; 451. an external thread; 452. a groove; 46. a seal ring; 461. a first chamfer; 462. a second chamfer; 463. a third chamfer; 47. a gasket; 5. a second connection assembly; 51. an adjusting tube; 52. a second bracket; 6. a support plate; 61. a first through hole; 62. a second via.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1, a heat exchanger disclosed by the present invention comprises a frame 1, wherein a first connecting pipe 11 is welded at the upper end of one end of the frame 1, and an air inlet pipe 13 is welded on the first connecting pipe 11; a second connecting pipe 12 is welded on the rack 1 below the first connecting pipe 11, and an air outlet pipe 14 is welded on the second connecting pipe 12; a plurality of heat exchange mechanisms 2 are arranged on the rack 1 along the horizontal direction of the rack, and the first connecting pipe 11 and the second connecting pipe 12 are both connected with the heat exchange mechanisms 2.

Fixedly connected with backup pad 6 on the frame 1, seted up first through-hole 61 and second through-hole 62 on the backup pad 6, first through-hole 61 sets up with second through-hole 62 along the vertical direction cross of backup pad 6.

Referring to fig. 1 and 2, the heat exchange mechanism 2 includes a plurality of heat exchange units 3, and the plurality of heat exchange units 3 are arranged in a vertical direction of the rack 1; the heat exchange unit 3 comprises a third connecting pipe 32, the third connecting pipe 32 passes through the first through hole 61, one end of the third connecting pipe 32 is welded with a second bent pipe 31, the cross-sectional area of the second bent pipe 31 is U-shaped, one end of the second bent pipe 31 far away from the third connecting pipe 32 is welded with a fourth connecting pipe 33, and the fourth connecting pipe 33 passes through the second through hole 62; the third connecting pipe 32 is located above the fourth connecting pipe 33, and the axis of the third connecting pipe 32 and the axis of the fourth connecting pipe 33 are not located on the same horizontal plane; the axes of the plurality of third connecting pipes 32 in the heat exchange unit 3 are located in the same vertical plane; the axes of the plurality of fourth connecting pipes 33 in the heat exchange unit 3 are located in the same vertical plane; the second bend 31 is obliquely arranged; the third connecting pipe 32 is obliquely arranged, and the relative height of one end of the third connecting pipe 32 far away from the second bent pipe 31 is higher than that of one end of the third connecting pipe 32 close to the second bent pipe 31; the fourth connecting pipe 33 is also disposed obliquely, and the relative height of the end of the fourth connecting pipe 33 away from the second bent pipe 31 is lower than the relative height of the end of the fourth connecting pipe 33 close to the second bent pipe 31.

Referring to fig. 2, fig. 3, fig. 4 and fig. 5, a first connecting assembly 4 is arranged on the frame 1, and two adjacent heat exchange units 3 are connected through the first connecting assembly 4.

The first connecting assembly 4 comprises a first bent pipe 41, the cross-sectional area of the first bent pipe 41 is U-shaped, the two ends of the first bent pipe 41 are welded with first brackets 42 communicated with the first bent pipe 41, the inner side wall of each first bracket 42 is provided with a first internal thread 421, and one end of each first bracket 42 close to the first bent pipe 41 is fixedly connected with a rubber pad 43; the outer side wall of the third connecting pipe 32 is connected with a connecting block 45 in a sliding manner, one end of the connecting block 45 close to the first bent pipe 41 is provided with an external thread 451 in threaded connection with the first internal thread 421, and the inner side wall of one end of the connecting block 45 close to the first bent pipe 41 is provided with a groove 452; an annular groove 34 is formed in the outer side wall of one end, away from the second bent pipe 31, of the third connecting pipe 32, a C-shaped clamping ring 44 is clamped in the annular groove 34, and the C-shaped clamping ring 44 abuts against the bottom wall of the groove 452; a sealing ring 46 is arranged in the first bracket 42, the sealing ring 46 being made of rubber; one end of the sealing ring 46 is provided with a second chamfer 462 which collides with the rubber pad 43 and is far away from one end of the first elbow pipe 41, and the second chamfer 462 is provided with a third chamfer 463 which collides with the inner side wall of the rubber pad 43; a first chamfer 461 is formed at one end of the sealing ring 46 away from the third chamfer 463, and one end of the sealing ring 46 away from the third chamfer 463 is sleeved on the outer side wall of the third connecting pipe 32; a gasket 47 is sleeved on the third connecting pipe 32 between the sealing ring 46 and the connecting block 45, one end of the gasket 47 abuts against one end of the connecting block 45 close to the groove 452, and the other end abuts against one end of the sealing ring 46 close to the first chamfer 461. Firstly, the connecting block 45 slides on the third connecting pipe 32, and then the C-shaped clamping ring 44 is clamped on the annular groove 34 of the third connecting pipe 32, so that the C-shaped clamping ring 44 abuts against the bottom wall of the groove 452; then, the connecting block 45 moves up close to one of the first brackets 42 of the first elbow 41, when the external thread 451 on the connecting block 45 is in threaded connection with the first internal thread 421 on the first bracket 42, the connecting block 45 drives the gasket 47 to rotate, the gasket 47 drives the sealing ring 46 to perform linear motion, so that the sealing ring 46 is compressed, the third chamfer 463 abuts against the inner wall of the rubber gasket 43, and the second chamfer 462 abuts against the rubber gasket 43.

The end of the fourth connecting pipe 33 away from the second bend 31 is also provided with the same annular groove 34, and the same C-shaped snap ring 44 is also clamped in the annular groove 34; the same connecting block 45 is also slidably connected to the fourth connecting pipe 33. Firstly, the connecting block 45 slides on the fourth connecting pipe 33, and then the C-shaped clamping ring 44 is clamped on the annular groove 34 of the fourth connecting pipe 33, so that the C-shaped clamping ring 44 abuts against the bottom wall of the groove 452; then, the connecting block 45 moves up close to the other first bracket 42 of the first bending pipe 41, when the external thread 451 on the connecting block 45 is in threaded connection with the first internal thread 421 on the first bracket 42, the connecting block 45 drives the gasket 47 to rotate, the gasket 47 drives the sealing ring 46 to perform linear motion, so that the sealing ring 46 is compressed, the third chamfer 463 abuts against the inner wall of the rubber gasket 43, and the second chamfer 462 abuts against the rubber gasket 43.

Referring to fig. 2 and 6, a second connecting assembly 5 connected with the heat exchanging unit 3 is arranged on the first connecting pipe 11, the second connecting assembly 5 includes an adjusting pipe 51 welded on the first connecting pipe 11, one end of the adjusting pipe 51 far away from the first connecting pipe 11 is welded with a second bracket 52 communicated with the adjusting pipe 51, a second threaded hole is formed in the second bracket 52, one end of the second threaded hole close to the adjusting pipe 51 is fixedly connected with the same rubber pad 43, and the same sealing ring 46 is also arranged in the second bracket 52. Firstly, sliding the connecting block 45 on the third connecting pipe 32 close to the heat exchange unit 3 of the first connecting pipe 11, and then clamping the C-shaped clamping ring 44 on the annular groove 34 of the third connecting pipe 32 to enable the C-shaped clamping ring 44 to abut against the bottom wall of the groove 452; then, the connecting block 45 is moved in a direction approaching the adjusting tube 51, when the external thread 451 on the connecting block 45 is in threaded connection with the second internal thread on the second bracket 52, the connecting block 45 drives the gasket 47 to rotate, the gasket 47 drives the sealing ring 46 to move linearly, so that the sealing ring 46 is compressed, the third chamfer 463 abuts against the inner wall of the rubber pad 43, and the second chamfer 462 abuts against the rubber pad 43.

The heat exchange unit 3 close to one end of the second connecting pipe 12 is connected with the second connecting pipe 12 through the second connecting pipe 12; the same adjusting pipe 51 is welded on the second connecting pipe 12, and the same second bracket 52 is welded on one end of the adjusting pipe 51 far away from the second connecting pipe 12. The connecting block 45 of the fourth connecting pipe 33 is screwed with the second inner thread of the second bracket 52 near one end of the second connecting pipe 12.

The implementation principle of the embodiment is as follows: the third connecting pipe 32 on the heat exchange unit 3 firstly passes through the first through hole 61 on the support plate 6; the fourth connection pipe 33 passes through the second through-hole 62 of the support plate 6.

Then, the connecting block 45 is slid on the third connecting pipe 32 of the heat exchange unit 3, and then the C-shaped clamping ring 44 is clamped on the annular groove 34 of the third connecting pipe 32, so that the C-shaped clamping ring 44 abuts against the bottom wall of the groove 452; then, the connecting block 45 moves up close to one of the first brackets 42 of the first elbow 41, when the external thread 451 on the connecting block 45 is in threaded connection with the first internal thread 421 on the first bracket 42, the connecting block 45 drives the gasket 47 to rotate, the gasket 47 drives the sealing ring 46 to perform linear motion, so that the sealing ring 46 is compressed, the third chamfer 463 abuts against the inner wall of the rubber gasket 43, and the second chamfer 462 abuts against the rubber gasket 43.

Then, the connecting block 45 is made to slide on the fourth connecting pipe 33 on the adjacent heat exchange unit 3, so that the C-shaped clamping ring 44 is clamped on the annular groove 34 of the fourth connecting pipe 33, and the C-shaped clamping ring 44 abuts against the bottom wall of the groove 452; then, the connecting block 45 moves up close to the other first bracket 42 of the first bending pipe 41, when the external thread 451 on the connecting block 45 is in threaded connection with the first internal thread 421 on the other first bracket 42, the connecting block 45 drives the gasket 47 to rotate, the gasket 47 drives the sealing ring 46 to move linearly, so that the sealing ring 46 is compressed, the third chamfer 463 abuts against the inner wall of the rubber gasket 43, and the second chamfer 462 abuts against the rubber gasket 43. Thereby connecting two adjacent heat exchange units 3 together.

Sliding the connecting block 45 on the third connecting pipe 32 close to the heat exchange unit 3 of the first connecting pipe 11, and then clamping the C-shaped clamping ring 44 on the annular groove 34 of the third connecting pipe 32, so that the C-shaped clamping ring 44 abuts against the bottom wall of the groove 452; then, the connecting block 45 is moved in a direction approaching the adjusting tube 51, when the external thread 451 on the connecting block 45 is in threaded connection with the second internal thread on the second bracket 52, the connecting block 45 drives the gasket 47 to rotate, the gasket 47 drives the sealing ring 46 to move linearly, so that the sealing ring 46 is compressed, the third chamfer 463 abuts against the inner wall of the rubber pad 43, and the second chamfer 462 abuts against the rubber pad 43. The heat exchange unit 3 is brought into communication with the first connection pipe 11.

Then, the connecting block 45 is slid on the fourth connecting pipe 33 close to the heat exchange unit 3 of the second connecting pipe 12, and then the C-shaped clamping ring 44 is clamped on the annular groove 34 of the fourth connecting pipe 33, so that the C-shaped clamping ring 44 abuts against the bottom wall of the groove 452; then, the connecting block 45 is moved in a direction approaching the adjusting tube 51, when the external thread 451 on the connecting block 45 is in threaded connection with the second internal thread on the second bracket 52, the connecting block 45 drives the gasket 47 to rotate, the gasket 47 drives the sealing ring 46 to move linearly, so that the sealing ring 46 is compressed, the third chamfer 463 abuts against the inner wall of the rubber pad 43, and the second chamfer 462 abuts against the rubber pad 43. The heat exchange unit 3 is communicated with the second connection pipe 12.

The hot gas enters the first connecting pipe 11 through the gas inlet pipe 13, then enters the third connecting pipe 32 through the adjusting pipe 51, then enters the fourth connecting pipe 33 through the second bent pipe 31, then enters the adjacent third connecting pipe 32 through the first bent pipe 41, then enters the fourth connecting pipe 33 through the second bent pipe 31, then enters the second connecting pipe 12 through the adjusting pipe 51, and finally flows out through the gas outlet pipe 14.

When one of the heat exchange units 3 is damaged, the third connecting pipe 32 on the damaged heat exchange unit 3 and the first elbow pipe 41 on the fourth connecting pipe 33 on the adjacent heat exchange unit 3 are detached; the fourth connecting pipe 33 of the damaged heat exchanging unit 3 and the first bent pipe 41 of the third connecting pipe 32 of the adjacent heat exchanging unit 3 are detached, the damaged heat exchanging unit 3 is pulled out from the rack 1, and the new heat exchanging unit 3 is replaced.

When the heat exchange unit 3 adjacent to the first connection pipe 11 is damaged, the connection block 45 of the third connection pipe 32 of the damaged heat exchange unit 3 is separated from the second bracket 52; the fourth connecting pipe 33 of the damaged heat exchanging unit 3 and the first bent pipe 41 of the third connecting pipe 32 of the adjacent heat exchanging unit 3 are detached, the damaged heat exchanging unit 3 is pulled out from the rack 1, and the new heat exchanging unit 3 is replaced.

When the heat exchange unit 3 adjacent to the second connection pipe 12 is damaged, the connection block 45 on the fourth connection pipe 33 on the damaged heat exchange unit 3 is separated from the second bracket 52; the third connecting pipe 32 of the damaged heat exchanging unit 3 and the first elbow pipe 41 of the fourth connecting pipe 33 of the adjacent heat exchanging unit 3 are detached, the damaged heat exchanging unit 3 is pulled out from the rack 1, and the new heat exchanging unit 3 is replaced.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. A heat exchanger comprises a frame (1), wherein a first connecting pipe (11) is arranged on the frame (1), and an air inlet pipe (13) is arranged on the first connecting pipe (11); a second connecting pipe (12) is arranged on the rack (1), and an air outlet pipe (14) is arranged on the second connecting pipe (12); the heat exchange device is characterized in that the heat exchange mechanism (2) is arranged on the rack (1), the heat exchange mechanism (2) comprises a plurality of heat exchange units (3), each heat exchange unit (3) comprises a third connecting pipe (32), and a fourth connecting pipe (33) is arranged on each third connecting pipe (32); a first connecting assembly (4) is arranged on the rack (1), and the fourth connecting pipe (33) on the heat exchange unit (3) is connected with the third connecting pipe (32) on the adjacent heat exchange unit (3) through the first connecting assembly (4); a second connecting assembly (5) is arranged on the rack (1), and the third connecting pipe (32) of the heat exchange unit (3) at one end of the heat exchange mechanism (2) is connected with the first connecting pipe (11) through the second connecting assembly (5); and the fourth connecting pipe (33) and the second connecting pipe (12) of the heat exchange unit (3) at the other end are also connected through the second connecting component (5).

2. A heat exchanger according to claim 1, wherein the first connecting assembly (4) comprises a first bent pipe (41), first brackets (42) are arranged on both ends of the first bent pipe (41), first inner threads (421) are arranged on both first brackets (42), and rubber pads (43) are arranged in both first brackets (42); an annular groove (34) is formed in one end, far away from the fourth connecting pipe (33), of the third connecting pipe (32), and a C-shaped clamping ring (44) is clamped in the annular groove (34); the third connecting pipe (32) is connected with a connecting block (45) in a sliding mode, an external thread (451) in threaded connection with the first internal thread (421) is formed in the connecting block (45), a groove (452) is formed in one end, close to the external thread (451), of the connecting block (45), and the C-shaped clamping ring (44) abuts against the bottom wall of the groove (452); the same annular groove (34) is also formed in one end, far away from the third connecting pipe (32), of the fourth connecting pipe (33), and the same C-shaped clamping ring (44) is clamped in the annular groove (34) in the fourth connecting pipe (33); the same connecting blocks (45) are arranged on the fourth connecting pipe (33).

3. A heat exchanger according to claim 2, wherein the first connecting assembly (4) further comprises a sealing ring (46) located in the first seat (42), an end of the sealing ring (46) close to the connecting block (45) is fitted on an outer side wall of the third connecting pipe (32) or the fourth connecting pipe (33), and the outer side wall is provided with a first chamfer (461); a second chamfer (462) is formed on the outer side wall of one end, far away from the connecting block (45), of the sealing ring (46), and a third chamfer (463) is formed at one end, far away from the first chamfer (461), of the second chamfer (462); the second chamfer (462) abuts against the rubber pad (43), and the third chamfer (463) abuts against the inner side wall of the rubber pad (43).

4. A heat exchanger according to claim 3, wherein a gasket (47) is provided between the sealing ring (46) and the connecting block (45), the gasket (47) is sleeved on the outer side wall of the third connecting pipe (32) or the fourth connecting pipe (33), one end of the gasket (47) abuts against the connecting block (45), and the other end abuts against the sealing ring (46).

5. A heat exchanger according to claim 4, characterized in that the second connecting assembly (5) comprises an adjusting tube (51), a second bracket (52) is arranged on the adjusting tube (51), a second internal thread is arranged on the second bracket (52), the rubber gasket (43) is also arranged in the second bracket (52), and the external thread (451) of the connecting block (45) on the third connecting tube (32) or the external thread (451) of the connecting block (45) on the fourth connecting tube (33) are both in threaded connection with the second internal thread.

6. A heat exchanger according to claim 2, characterized in that said frame (1) is provided with a plurality of said heat exchanging means (2) along its horizontal direction; a plurality of heat exchange units (3) in the heat exchange mechanism (2) are arranged along the vertical direction of the rack (1); the heat exchange unit (3) further comprises a second elbow pipe (31), one end of the second elbow pipe (31) is welded with the third connecting pipe (32), and the other end of the second elbow pipe (31) is welded with the third connecting pipe (32); the third connecting pipe (32) is located above the fourth connecting pipe (33), and the third connecting pipe (32) and the fourth connecting pipe (33) are not located on the same vertical plane.

7. A heat exchanger according to claim 6, wherein the third connecting pipe (32) and the fourth connecting pipe (33) are arranged obliquely, and the relative height of the third connecting pipe (32) at the end far away from the fourth connecting pipe (33) is higher than the relative height of the third connecting pipe (32) at the end near the fourth connecting pipe (33); the relative height of the fourth connecting pipe (33) close to the third connecting pipe (32) is higher than the relative height of the fourth connecting pipe (33) far away from the third connecting pipe (32).

8. The heat exchanger according to claim 1, wherein a support plate (6) is arranged on the frame (1), and a first through hole (61) for the third connecting pipe (32) to pass through is formed on the support plate (6); and a second through hole (62) for the fourth connecting pipe (33) to pass through is formed in the supporting plate (6).

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