CN212362947U - Heat exchange tube and air conditioning unit - Google Patents
Heat exchange tube and air conditioning unit Download PDFInfo
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- CN212362947U CN212362947U CN202021175458.8U CN202021175458U CN212362947U CN 212362947 U CN212362947 U CN 212362947U CN 202021175458 U CN202021175458 U CN 202021175458U CN 212362947 U CN212362947 U CN 212362947U
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Abstract
The application provides a heat exchange tube and an air conditioning unit. The heat exchange tube comprises a tube body and a plurality of fins arranged on the tube body, and a flow channel is formed between every two adjacent fins. A first boss structure is formed on the fin and covers the flow channel. The first boss structure is formed with a first groove extending in a direction perpendicular to the fins for distributing refrigerant on the first boss structure into flow channels adjacent the first boss structure. Use the technical scheme of the utility model, when the liquid refrigerant falls on first boss structure, the first slot on the first boss structure can be effectively with first boss structure refrigerant distribution to with the adjacent runner of first boss structure in, avoid the liquid refrigerant because of stop on first boss structure can not enter into the evaporation intracavity at runner place by the evaporation, and then improved the evaporation efficiency of heat exchange tube.
Description
Technical Field
The utility model relates to a refrigeration plant technical field particularly, relates to a heat exchange tube and air conditioning unit.
Background
In the evaporators of various forms of commercial air conditioners, the heat exchange performance of the falling film evaporator is outstanding, and a relatively small amount of refrigerant can be used for realizing a large heat exchange requirement, so that the falling film evaporator is widely applied to the field of commercial heat exchange. The fin structure is used as a key heat exchange element of the falling film evaporator, and the heat exchange performance of the fin structure determines the heat exchange efficiency of the falling film evaporator to a great extent.
In the prior art, the fin structure on the falling film evaporator has a poor drainage effect on the refrigerant, so that the refrigerant cannot effectively enter the fin structure to form in the evaporation cavity, and further the evaporation efficiency of the falling film evaporator is affected.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a heat exchange tube and air conditioning unit to solve the lower technical problem of evaporation efficiency that the heat exchange tube exists among the prior art.
The embodiment of the application provides a heat exchange tube, including body and the many fins of setting on the body, be formed with the runner between two adjacent fins, be formed with first boss structure on the fin, first boss structure lid is on the runner, the structural first slot that is formed with of first boss, first slot is along the direction of perpendicular to fin or the direction that is the angle with the fin extends, first slot is used for with on the first boss structure refrigerant distribution to with the adjacent runner of first boss structure in.
In one embodiment, the first boss structure is further formed with a second groove extending in the extending direction of the fin or in a direction at an angle to the extending direction of the fin, the second groove serving to distribute the refrigerant in the extending direction of the second groove.
In one embodiment, the first boss structure is a plurality of first boss structures, and the plurality of first boss structures are arranged on the fin at intervals.
In one embodiment, the first boss structure is a hexagonal umbrella structure.
In one embodiment, the first groove and the second groove are disposed in a cross shape on the first boss structure.
In one embodiment, the heat exchange tube further comprises a turbulator disposed within the flow channel for turbulating the refrigerant within the flow channel.
In one embodiment, the turbulator fin includes a fin structure disposed within the flow passage and a second boss structure disposed on the fin structure for turbulating the refrigerant within the flow passage, the second boss structure overlying the flow passage.
In one embodiment, the second boss structure is formed with a third groove extending in a direction perpendicular to or at an angle to the flow channel for distributing refrigerant on the second boss structure into the flow channel in which the second boss structure is located.
In one embodiment, the second boss structure further has a fourth groove formed thereon, the fourth groove extending in the extending direction of the flow channel or in a direction forming an angle with the extending direction of the flow channel, the fourth groove serving to distribute the refrigerant in the extending direction of the fourth groove.
In one embodiment, the third groove and the fourth groove are disposed in a cross shape on the second boss structure.
In one embodiment, the plurality of turbulator fins are spaced apart within the flow passage.
In one embodiment, the turbulator fins are located between the first boss structures of the four hexagonal umbrella structures.
In one embodiment, the second boss structure is an elliptical umbrella structure.
The embodiment of the application also provides an air conditioning unit, which comprises the heat exchange pipe.
In the above embodiment, when the liquid refrigerant falls on the first boss structure, the first groove on the first boss structure can effectively distribute the refrigerant on the first boss structure to the flow channel adjacent to the first boss structure, so that the liquid refrigerant is prevented from staying on the first boss structure and being unable to enter the evaporation cavity where the flow channel is located to be evaporated, and further the evaporation efficiency of the heat exchange tube is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic partial perspective view of an embodiment of a heat exchange tube according to the present invention;
FIG. 2 is a schematic top view of the heat exchange tube of FIG. 1;
fig. 3 is a schematic cross-sectional view of the C-C surface of the heat exchange tube of fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
The technical scheme of the utility model through set up the slot that has the equal liquid ability of drainage on the boss structure of fin to be favorable to carrying out effectual evaporation in distributing the evaporation chamber with the refrigerant. Specifically, as shown in fig. 1 and 2, the heat exchange tube of the present invention includes a tube body 10 and a plurality of fins 20 disposed on the tube body 10, and a flow channel a is formed between two adjacent fins 20. The fin 20 is formed with a first boss structure 30, and the first boss structure 30 covers the flow passage a. It should be noted that the evaporation cavity is formed between the first boss structure 30 and the flow passage a. In order to improve the distribution effect for the refrigerant, the first boss structure 30 is formed with first grooves 31, the first grooves 31 extend in a direction perpendicular to the fins 20, and the first grooves 31 are used for distributing the refrigerant on the first boss structure 30 into the flow channels a adjacent to the first boss structure 30.
Use the technical scheme of the utility model, when liquid refrigerant fell on first boss structure 30, first slot 31 on first boss structure 30 can distribute the refrigerant to the runner an adjacent with first boss structure 30 on first boss structure 30 effectively, avoids liquid refrigerant because of stop on first boss structure 30 and can not enter into the evaporation intracavity at runner a place by the evaporation, and then has improved the evaporation efficiency of heat exchange tube.
As an alternative embodiment not shown in the figures, the first grooves 31 may also extend in a direction at an angle to the fins 20.
As a more preferred embodiment, as shown in fig. 2, the first boss structure 30 is further formed with a second groove 32, the second groove 32 extending along the extending direction of the fin 20, and the second groove 32 is used for distributing the refrigerant along the extending direction of the second groove 32. In use, the second grooves 32 can also extend and flow the liquid refrigerant along the extending direction of the fins 20, so that the refrigerant is distributed more uniformly in the extending direction of the fins 20.
As an embodiment not shown in the figures, the second grooves 32 may also extend at an angle to the direction of extension of the fins 20.
As shown in fig. 2, in the solution of the present embodiment, there are a plurality of first boss structures 30, and the plurality of first boss structures 30 are arranged on the fin 20 at intervals. Optionally, the first boss structure 30 is a hexagonal umbrella structure.
As an alternative embodiment, as shown in fig. 2, the first grooves 31 and the second grooves 32 are arranged in a cross shape on the first boss structure 30. As another alternative, the first groove 31 and the second groove 32 may be arranged in an X shape.
As shown in fig. 2 and 3, in the technical solution of the present embodiment, the heat exchange tube further includes a spoiler fin 40, the spoiler fin 40 is disposed in the flow channel a, and the spoiler fin 40 is used for spoiler the refrigerant in the flow channel a. Thus, when the refrigerant is evaporated in the evaporation cavity, the gas-liquid mixture is disturbed by the disturbed flow of the disturbed flow fin platform 40, so that the disturbed flow degree is intensified, and the heat exchange can be enhanced.
As shown in fig. 3, in the solution of the present embodiment, the turbulator fin base 40 includes a fin structure 41 and a second boss structure 42 disposed on the fin structure 41, and the fin structure 41 is disposed in the flow channel a. In use, the fin structure 41 acts as a turbulent flow for the refrigerant in the flow passage a, and the second boss structure 42 covers the flow passage a to form an evaporation cavity.
More preferably, as shown in fig. 2, in the solution of the present embodiment, the second boss structure 42 is formed with a third groove 421, the third groove 421 extends in a direction perpendicular to the flow channel a or in a direction forming an angle with the flow channel a, and the third groove 421 is used for distributing the refrigerant on the second boss structure 42 to the flow channel a where the second boss structure 42 is located.
Similarly, when the liquid refrigerant falls on the second boss structure 42, the third groove 421 on the second boss structure 42 can also effectively distribute the refrigerant on the second boss structure 42 to the flow channel a adjacent to the second boss structure 42, so as to prevent the liquid refrigerant from staying on the second boss structure 42 and being unable to enter the evaporation cavity where the flow channel a is located to be evaporated, thereby improving the evaporation efficiency of the heat exchange tube.
More preferably, the second boss structure 42 further has a fourth groove 422 formed thereon, and the fourth groove 422 extends along the extending direction of the flow channel a or the direction forming an angle with the extending direction of the flow channel a. Similarly, the fourth groove 422 may also distribute the refrigerant along the extending direction of the fourth groove 422, and when the liquid refrigerant falls on the second land structure 42, the fourth groove 422 may distribute the liquid refrigerant into the flow passage a for evaporation.
Preferably, as shown in fig. 2, the third groove 421 and the fourth groove 422 are disposed on the second boss structure 42 in a cross shape. As another alternative embodiment, the third trench 421 and the fourth trench 422 may also be arranged in an X shape.
It should be noted that in the technical scheme of the utility model, foretell slot has still increased the surface area that the heat exchange tube can contact with the refrigerant except playing the effect of drainage distribution liquid refrigerant, has improved the heat transfer effect. The grooves can drain and uniformly spread the refrigerant dripped on the outer surface of the heat exchange tube in the axial direction and the circumferential direction, so that the refrigerant can be uniformly distributed on the surface of the large heat exchange tube to the maximum extent, and dry spots on part of the surface of the heat exchange tube are prevented; meanwhile, the cross-shaped grooves have a drainage effect on the refrigerant, so that the refrigerant has directivity when dropping from top to bottom, and the problem that the refrigerant cannot accurately drop onto the lower row of heat exchange tubes, so that heat exchange cannot be participated, and the loss of cold energy is caused is prevented.
In the present embodiment, there are a plurality of fin bases 40, and the fin bases 40 are disposed in the flow channel a at intervals. More preferably, the turbulator fins 40 are located between the first boss structures 30 of the four hexagonal umbrella structures. Therefore, a structure that the turbulence fin platform 40 and the first boss structure 30 are arranged in a staggered mode can be formed, so that a multi-layer evaporation cavity structure with different sizes can be formed on different planes, and the turbulence effect on the refrigerant is improved. The structure of each evaporation cavity has axial and circumferential gaps, so that the refrigerant can enter the evaporation cavity structure, the refrigerant can be continuously supplemented when the refrigerant is evaporated, and the refrigerant steam is discharged, so that the evaporation can be continuously carried out, and a continuous evaporation process is formed. Meanwhile, the evaporation cavity structure can meet different requirements on nucleation radius under different heat loads or different wall surface superheat degrees, so that the heat exchange tube can have good heat exchange performance under variable loads.
Optionally, the second boss structure 42 is an elliptical umbrella structure. Preferably, the technical scheme of the utility model in, the structure size of the first boss structure 30 of hexagonal umbrella structure is greater than the structure size of the second boss structure 42 of oval umbrella structure to the structural strength of heat exchange tube has been increased.
Optionally, in the technical solution of the present embodiment, the fins 20 are spirally wound outside the tube body 10 along the axial direction, and the root portions of the fins 20 are connected with the tube body 10 as a whole. The flow channel a is an annular channel formed between the fins 20, which is beneficial to the circumferential flow of the refrigerant and enhances the disturbance of vapor and liquid phases during the evaporation of the refrigerant, thereby enhancing the heat exchange effect.
According to the above, the technical scheme of the utility model, can solve the problem that heat exchange tube drainage effect is obscure among the prior art, also can overcome the heat exchange tube among the prior art and to the technical problem that the vortex effect is obscure, increase the heat transfer area of heat exchange tube and improve the adaptability of heat exchange tube simultaneously.
Specifically, the utility model discloses an above-mentioned structure can choose for use following parameter:
the height H1 of the first boss 30 and the second boss 42 is 0.4mm to 0.9mm, preferably 0.6 mm. The height of the low-layer evaporation cavity formed by the first boss structures 30 and the turbulence fin platforms 40 is 0.25mm-0.35mm, preferably 0.35mm, and the height of the high-layer evaporation cavity formed by the first boss structures 30 and the turbulence fin platforms 40 is 0.35-0.45mm, preferably 0.45 mm.
The fin thickness H2 of the first boss structure 30 is 0.1mm to 0.2mm, preferably 0.15 mm; the width of the top cross-fin portion of the first boss structure 30 is 0.6mm to 0.8mm, preferably 0.7 mm.
The fin thickness H3 of the second boss structure 42 is 0.05mm to 0.1mm, preferably 0.07 mm; the width of the top cross-fin portion of the second boss structure 42 is 0.35mm to 0.45mm, preferably 0.4 mm. The number of the first boss structures 30 and the second boss structures 42 is 15-45, preferably 30, in the circumferential direction, the center-to-center distance between the first boss structures 30 is 0.87mm, and the center-to-center distance between the second boss structures 42 is 0.87 mm.
Optionally, the first groove 31 and the second groove 32 are knurled structures formed by pressing the first boss structure 30, the knurled structures may also be inclined knurls along the axial direction and the circumferential direction, and the depth of the knurled structures is 0.05mm-0.15 mm. The third groove 421 and the fourth groove 422 are knurled structures pressed on the second boss structure 42, the knurled structures may be straight knurls along the axial direction and the circumferential direction, and may also be inclined knurls in addition to the structures shown in the above figures, and the depth of the knurled structures is 0.05mm-0.2 mm.
The utility model also provides an air conditioning unit, this air conditioning unit include foretell heat exchange tube, adopt the air conditioning unit of above-mentioned heat exchange tube, can improve air conditioning unit's heat exchange efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (14)
1. A heat exchange tube comprises a tube body (10) and a plurality of fins (20) arranged on the tube body (10), flow channels (a) are formed between every two adjacent fins (20), first boss structures (30) are formed on the fins (20), the first boss structures (30) cover the flow channels (a), the heat exchange tube is characterized in that first grooves (31) are formed on the first boss structures (30), the first grooves (31) extend in a direction perpendicular to the fins (20) or in a direction forming an angle with the fins (20), and the first grooves (31) are used for distributing refrigerant on the first boss structures (30) into the flow channels (a) adjacent to the first boss structures (30).
2. A heat exchange tube according to claim 1, wherein the first boss structure (30) is further formed with a second groove (32), the second groove (32) extending in the extending direction of the fin (20) or in a direction at an angle to the extending direction of the fin (20), the second groove (32) serving to distribute refrigerant in the extending direction of the second groove (32).
3. A heat exchange tube according to claim 2, wherein the first boss structure (30) is plural, and plural first boss structures (30) are provided at intervals on the fin (20).
4. A heat exchange tube according to claim 3, characterised in that the first boss structure (30) is a hexagonal umbrella structure.
5. A heat exchange tube according to any one of claims 2 to 4, characterised in that the first groove (31) and the second groove (32) are arranged in a cross shape on the first boss structure (30).
6. The heat exchange tube according to claim 4, further comprising a flow-disturbing fin stage (40), the flow-disturbing fin stage (40) being disposed in the flow channel (a), the flow-disturbing fin stage (40) for disturbing a refrigerant in the flow channel (a).
7. The heat exchange tube of claim 6, wherein the turbulator fin structure (40) comprises a fin structure (41) and a second boss structure (42) provided on the fin structure (41), the fin structure (41) being provided in the flow channel (a), the fin structure (41) being for turbulating the refrigerant in the flow channel (a), the second boss structure (42) being overlaid on the flow channel (a).
8. A heat exchange tube according to claim 7, characterised in that the second boss structure (42) is formed with a third groove (421), the third groove (421) extending in a direction perpendicular to the flow channel (a) or at an angle thereto, the third groove (421) being for distributing refrigerant on the second boss structure (42) into the flow channel (a) in which the second boss structure (42) is located.
9. A heat exchange tube according to claim 8, wherein the second boss structure (42) is further formed with a fourth groove (422), the fourth groove (422) extending in the extending direction of the flow channel (a) or in a direction making an angle with the extending direction of the flow channel (a), the fourth groove (422) serving to distribute the refrigerant in the extending direction of the fourth groove (422).
10. A heat exchange tube according to claim 9, characterised in that the third groove (421) and the fourth groove (422) are arranged in a cross shape on the second boss structure (42).
11. The heat exchange tube as recited in claim 7, wherein the flow-disturbing fin stage (40) is plural, and the plural flow-disturbing fin stages (40) are arranged at intervals in the flow channel (a).
12. The heat exchange tube of claim 11, wherein the turbulator fins (40) are located between the first boss structures (30) of the four hexagonal umbrella structures.
13. A heat exchange tube according to claim 12, characterised in that the second boss structure (42) is an elliptical umbrella structure.
14. An air conditioning assembly comprising a heat exchange tube, wherein the heat exchange tube is as claimed in any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021175458.8U CN212362947U (en) | 2020-06-22 | 2020-06-22 | Heat exchange tube and air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021175458.8U CN212362947U (en) | 2020-06-22 | 2020-06-22 | Heat exchange tube and air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212362947U true CN212362947U (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021175458.8U Active CN212362947U (en) | 2020-06-22 | 2020-06-22 | Heat exchange tube and air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212362947U (en) |
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2020
- 2020-06-22 CN CN202021175458.8U patent/CN212362947U/en active Active
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