CN209857438U - Evaporating pipe - Google Patents
Evaporating pipe Download PDFInfo
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- CN209857438U CN209857438U CN201920291136.0U CN201920291136U CN209857438U CN 209857438 U CN209857438 U CN 209857438U CN 201920291136 U CN201920291136 U CN 201920291136U CN 209857438 U CN209857438 U CN 209857438U
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- fin
- fins
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- tube
- refrigerant
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- 238000001704 evaporation Methods 0.000 title claims abstract description 50
- 239000003507 refrigerant Substances 0.000 claims abstract description 37
- 230000008020 evaporation Effects 0.000 abstract description 22
- 238000012546 transfer Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 24
- 239000011265 semifinished product Substances 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000009834 vaporization Methods 0.000 description 7
- 230000008016 vaporization Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 239000011552 falling film Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses an evaporating pipe, which comprises a pipe body and a fin part, wherein the fin part comprises a fin group spirally arranged on the pipe wall of the pipe body along the axial direction of the pipe body; the fin comprises a main fin and a secondary fin, wherein the root of the main fin is connected to the pipe wall and extends out of the pipe wall, the connecting end of the secondary fin is connected to the tip of the main fin, the free end of the secondary fin extends towards the main fin of the adjacent fin, and the cross section of the secondary fin is V-shaped; in the adjacent fins, the main fin of one fin, the main fin and the auxiliary fin of the other fin and the pipe wall jointly enclose a refrigerant sub-channel, and all the refrigerant sub-channels are communicated to form a refrigerant channel; the fin part is provided with a hole groove which is communicated with the refrigerant channel and is suitable for exchanging the refrigerant between the refrigerant channel and the outside. The utility model discloses can further improve its evaporation heat transfer performance.
Description
Technical Field
The utility model relates to an evaporating pipe.
Background
At present, for a shell-and-tube heat exchanger, to improve the heat exchange efficiency of equipment, a very important approach is to develop a heat exchange tube with higher heat exchange performance, so as to improve the heat exchange efficiency of the heat exchanger.
In the prior art, low-fin heat exchange tubes with different structures are generally adopted, and evaporation heat exchange tubes with low fins in different shapes have various structural forms, but are mostly made into T-shaped fin or concave cavity structures by increasing the surface area of the heat exchange tubes and mainly increasing vaporization cores during boiling, and compared with classical tube types such as Gewa-T tubes, Turbo-B tubes and the like. The concave cavity structure has different vapor collection capacities for different refrigerants due to different wetting capacities, so that the evaporation heat exchange efficiency is different.
With the continuous appearance of new working media, the properties of all the working media are different, and the current concave cavity structure has stable steam collecting capacity for different working media and can stably and continuously generate bubbles, which is difficult to achieve. Meanwhile, aiming at the existing sunken cavity structure, the evaporation heat exchange performance of the heat exchange tube is further improved, and a plurality of places needing improvement are provided.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide an evaporating pipe, it can further improve its evaporation heat transfer performance.
In order to solve the technical problem, the technical scheme of the utility model is that: an evaporation tube comprises a tube body and a fin part, wherein the fin part comprises a fin group spirally arranged on the tube wall of the tube body along the axial direction of the tube body; wherein,
the fin includes:
the root is connected with the pipe wall and extends out of the main fin;
the connecting end is connected to the tip part of the main fin, the free end extends towards the main fin of the adjacent fin, and the cross section of the auxiliary fin is V-shaped;
in the adjacent fins, the main fin of one fin, the main fin and the auxiliary fin of the other fin and the pipe wall jointly enclose a refrigerant sub-channel, and all the refrigerant sub-channels are communicated to form a refrigerant channel;
the fin part is provided with a hole groove which is communicated with the refrigerant channel and is suitable for exchanging the refrigerant between the refrigerant channel and the outside.
The specific structure of the auxiliary fin is further provided, and the auxiliary fin comprises a near main fin part and a far main fin part which are connected to form a V shape, the connection part is sunken towards the direction of the pipe wall, and the connection part is not contacted with the pipe wall.
Furthermore, the holes are provided with two types, namely a big hole groove and a small hole groove which are respectively arranged on the auxiliary fin; wherein,
the starting ends of the large hole grooves and the small hole grooves in the spacing direction of the adjacent fins start from the free ends of the secondary fins;
the terminal ends of the large-hole grooves in the spacing direction of the adjacent fins are terminated at the connecting ends of the secondary fins;
the termination ends of the small-hole grooves in the spacing direction of the adjacent fins are terminated at the connection part of the near main fin part and the far main fin part.
Further, the large pore grooves and the small pore grooves are alternately arranged on the secondary fins along a spiral advancing direction.
Further, in the same fin, the range of the included angle α between the near-primary fin portion and the tip of the primary fin is: alpha is more than 0 degree and less than 90 degrees.
Further, in the adjacent fins, the main fin of one fin overlaps the free end of the secondary fin of the other fin, and the cross section of a structure formed by connecting the main fin of one fin with the main fin and the secondary fin of the other fin is M-shaped.
Further, the expansion length of the secondary fins in the interval direction of the adjacent fins is smaller than the height of the primary fins.
Further, the fin portion is arranged on the outer surface of the pipe wall of the pipe body.
The utility model also provides an application of evaporating pipe, it is applied to flooded evaporator or falling film evaporator.
The utility model also provides a manufacturing method of evaporating pipe, contains in the step of method:
a method of manufacturing an evaporator tube, the method comprising the steps of:
providing a light pipe blank, and continuously carrying out the following steps on the light pipe blank:
processing fins on the tube blank of the light tube;
cutting hole grooves at corresponding positions on the fins;
bending the fins after the hole grooves are cut at least once, and bending the fins into semi-finished products of main fins and auxiliary fins; wherein, the bending part is the connection part of the primary fin (21) and the secondary fin semi-finished product, and the free end of the secondary fin semi-finished product is lapped on the tip part of the primary fin of the adjacent fin;
and bending the semi-finished product of the auxiliary fin, and bending the semi-finished product of the auxiliary fin into the auxiliary fin with the V-shaped cross section to form a finished product.
The utility model also provides a manufacturing method of evaporating pipe, contains in the step of method:
providing a light pipe blank, and continuously carrying out the following steps on the light pipe blank:
processing fins on the tube blank of the light tube;
cutting hole grooves at corresponding positions on the fins; the hole grooves comprise big hole grooves and small hole grooves;
bending the fins after the hole grooves are cut at least once, and bending the fins into semi-finished products of main fins and auxiliary fins; the bending part is the termination end of the large hole groove in the spacing direction of the adjacent fins, namely the connection part of the primary fin and the secondary fin semi-finished product, and the free end of the secondary fin semi-finished product is lapped on the tips of the primary fins of the adjacent fins;
bending the semi-finished product of the auxiliary fin, and bending the semi-finished product of the auxiliary fin into the auxiliary fin with the V-shaped cross section to form a finished product; the bending part is the terminal end of the small hole groove in the interval direction of the adjacent fins.
After the technical scheme is adopted, the utility model is provided with the fins with special structures, the cross sections of the secondary fins of the fins are V-shaped structures, the secondary fins with the structures can increase the heat exchange area, and the turbulence degree of the fluid flow in the refrigerant channel is enhanced; in adjacent fins, the main fin of one fin, the main fin and the auxiliary fin of the other fin and the pipe wall jointly enclose a refrigerant sub-channel, the refrigerant sub-channel of the structure forms a plurality of steam collection corners, and according to the classical nucleation theory, the steam collection corners have stable steam collection capacity for refrigerants with different wetting performances, a stable vaporization core can be formed, and the maintenance of the vaporization core, namely, bubbles can be continuously generated, and the refrigerant sub-channel is an important factor for improving the heat exchange efficiency of the evaporation pipe. Therefore, the utility model provides a fin structure has increased the vaporization core number of evaporating pipe, makes its evaporation heat transfer performance strengthen greatly. Meanwhile, after bubbles are generated by virtue of the refrigerant sub-channel, bubble polymerization can be formed, a large-area liquid micro-layer evaporation at the bottom of the bubbles can be formed, and the boiling heat exchange is further enhanced; in addition, the utility model also provides a method for manufacturing the evaporating pipe with the special structure, so that the manufacturing of the evaporating pipe is easy and convenient.
Drawings
Fig. 1 is a schematic structural diagram of an evaporation tube according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view C-C of FIG. 1;
fig. 3 is a schematic horizontal development view of a part of the tube wall of the evaporation tube according to the embodiment of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
Example one
FIG. 1 is a schematic structural view of an evaporating tube of the present embodiment;
FIG. 2 is a cross-sectional view C-C of FIG. 1;
fig. 3 is a schematic view showing the evaporation tube of the present embodiment with the tube wall horizontally expanded.
As shown in fig. 1 ~ 3, an evaporating tube comprises a tube body 1 and a fin portion including a fin group spirally wound around a tube wall 11 of the tube body along an axial direction of the tube body, wherein,
the fin 2 includes:
a main fin 21 having a root connected to the tube wall 11 and extending from the tube wall 11;
a secondary fin 22 having a connection end connected to the tip of the primary fin 21 and a free end extending toward the primary fin 21 of the adjacent fin 2 and having a V-shaped cross section;
in the adjacent fins 2, the main fin 21 of one fin 2, the main fin 21 and the auxiliary fin 22 of the other fin 2 and the tube wall 11 jointly enclose a refrigerant sub-channel 3, and all the refrigerant sub-channels 3 are communicated to form a refrigerant channel;
the fin part is provided with a hole groove which is communicated with the refrigerant channel and is suitable for exchanging the refrigerant between the refrigerant channel and the outside.
The evaporation tube of the embodiment is provided with the fin 2 with a special structure, the cross section of the secondary fin 22 of the fin 2 is of a V-shaped structure, the secondary fin 22 with the structure can increase the heat exchange area, enhance the turbulence degree of fluid flow in a refrigerant channel, and also increase the heat exchange efficiency of the refrigerant channel; in the adjacent fins 2, the main fin 21 of one fin 2, the main fin 21 and the auxiliary fin 22 of the other fin 2 and the pipe wall 11 jointly enclose a refrigerant sub-channel 3, the refrigerant sub-channel 3 with the structure forms a plurality of steam collection corners, and according to the classical nucleation theory, the steam collection corners have stable steam collection capability for refrigerants with different wetting properties, can form a stable vaporization core, and the maintenance of the vaporization core can continuously generate bubbles, so that the heat exchange efficiency of the evaporation pipe is improved. Therefore, the fin structure of the evaporating tube of the embodiment increases the number of vaporization cores of the evaporating tube, so that the evaporation heat exchange performance of the evaporating tube is greatly enhanced. Meanwhile, after bubbles are generated by means of the refrigerant sub-channel, bubble polymerization can be formed, a large-area liquid micro-layer evaporation at the bottom of the bubbles can be formed, and boiling heat exchange is further enhanced.
As shown in fig. 2, the secondary fin 22 includes a proximal main fin 22a and a distal main fin 22b which are connected to form a V-shape, and the joints are recessed toward the direction of the tube wall and do not contact with the tube wall 11; specifically, the lengths of the near major fins 22a and the far major fins 22b in the adjacent fin pitch direction are equal, but are not limited thereto; the spacing direction of adjacent fins described herein is the direction a in fig. 2.
As shown in fig. 3, the holes are provided in two types, a large hole groove 22d and a small hole groove 22c, which are opened in the secondary fin 22; wherein,
the starting ends of the large hole grooves 22d and the small hole grooves 22c in the spacing direction of the adjacent fins start from the free ends of the secondary fins 22;
the terminating ends of the large-hole grooves 22d in the spacing direction of the adjacent fins terminate at the connecting ends of the secondary fins 22;
the terminal ends of the small hole grooves 22c in the fin pitch direction of the adjacent fins terminate at the junction of the proximal main fin 22a and the distal main fin 22 b.
The hole grooves in this embodiment are provided as the large hole groove 22d and the small hole groove 22c mainly for facilitating bending of the fin 2 during manufacturing, but the hole grooves are not limited to the structures of the large hole groove 22d and the small hole groove 22c, and the specific shapes thereof are also not limited.
The large hole grooves 22d and the small hole grooves 22c may be alternately arranged on the secondary fins 22 along a spiral advancing direction.
In the same fin 2, the range of the angle α between the near primary fin portion 22a and the tip of the primary fin 21 is: alpha is more than 0 degree and less than 90 degrees; in the present embodiment, the angle α is preferably 45 °.
In the adjacent fins 2, the main fin 21 of one fin 2 is overlapped with the free end of the secondary fin 22 of the other fin 2, and the cross section of the structure formed by connecting the main fin 21 of one fin 2 with the main fin 21 and the secondary fin 22 of the other fin 2 is M-shaped; of course, the free ends of the primary fins 21 of one fin 2 and the secondary fins 22 of the other fin 2 in adjacent fins 2 may be as close as possible, and need not overlap completely.
The expansion length of the secondary fins 22 in the spacing direction of the adjacent fins is smaller than the height h of the primary fins 21.
As shown in fig. 2, the fin portion is provided on the outer surface of the tube wall 11 of the tube body; preferably, the inner surface of the pipe wall 11 of the pipe body can be further provided with a spiral groove 11a to better increase the evaporation heat exchange effect.
The evaporation tube of the embodiment is optimally suitable for a flooded evaporator or a falling film evaporator, and can greatly improve the evaporation heat exchange capacity of the evaporation tube.
Example two
A method for manufacturing an evaporation tube, which is suitable for manufacturing the evaporation tube in the first embodiment, the method comprises the following steps:
providing a light pipe blank, and continuously carrying out the following steps on the light pipe blank:
processing fins 2 on the tube blank of the light tube;
cutting a hole groove at a corresponding position on the fin 2;
bending the fin 2 after the hole slot is cut at least once, and bending the fin into a primary fin 21 and a secondary fin semi-finished product; wherein, the bending part is the connection part of the primary fin 21 and the secondary fin semi-finished product, and the free end of the secondary fin semi-finished product is lapped on the tip part of the primary fin 21 of the adjacent fin 2; in the embodiment, the fins 2 are bent for the second time, so that the bending process is facilitated;
and bending the semiproduct of the auxiliary fin to bend the semiproduct of the auxiliary fin into the auxiliary fin 22 with the V-shaped cross section to form a finished product.
The evaporating pipe of the embodiment is continuously processed and finished in a set of combined processing dies by the steps of the tube blank of the light pipe.
EXAMPLE III
The manufacturing method of the evaporating tube of the embodiment is a modified version of the second embodiment, and is particularly suitable for manufacturing the evaporating tube with the large-hole grooves 22d and the small-hole grooves 22c, and the steps of the method comprise:
providing a light pipe blank, and continuously carrying out the following steps on the light pipe blank:
processing fins 2 on the tube blank of the light tube;
cutting a hole groove at a corresponding position on the fin 2; the hole grooves comprise big hole grooves 22d and small hole grooves 22 c;
bending the fin 2 after the hole slot is cut at least once, and bending the fin into a primary fin 21 and a secondary fin semi-finished product; the bending part is the termination end of the large hole groove 22d in the interval direction of the adjacent fins, namely the connection part of the primary fin 21 and the secondary fin semi-finished product, and the free end of the secondary fin semi-finished product is lapped on the tip part of the primary fin 21 of the adjacent fin 2; in the embodiment, the fins 2 are bent for the second time, so that the bending process is facilitated;
bending the semi-finished product of the auxiliary fin, and bending the semi-finished product of the auxiliary fin into the auxiliary fin 22 with a V-shaped cross section to form a finished product; wherein, the bending part is the terminal end of the small hole groove 22c in the interval direction of the adjacent fins.
The evaporating pipe of the embodiment is continuously processed and finished in a set of combined processing dies by the steps of the tube blank of the light pipe.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (8)
1. The evaporating tube comprises a tube body (1) and is characterized by further comprising a fin part, wherein the fin part comprises a fin group spirally arranged on the tube wall (11) of the tube body along the axial direction of the tube body; wherein,
the fin (2) includes:
a main fin (21) having a root connected to the tube wall (11) and extending from the tube wall (11);
the connecting end is connected with the tip of the main fin (21), the free end extends towards the main fin (21) of the adjacent fin (2), and the cross section of the auxiliary fin (22) is V-shaped;
in the adjacent fins (2), a main fin (21) of one fin (2), a main fin (21) and a secondary fin (22) of the other fin (2) and a pipe wall (11) jointly enclose a refrigerant sub-channel (3), and all the refrigerant sub-channels (3) are communicated to form a refrigerant channel;
the fin part is provided with a hole groove which is communicated with the refrigerant channel and is suitable for exchanging the refrigerant between the refrigerant channel and the outside.
2. The evaporating tube of claim 1, wherein: the secondary fins (22) comprise near main fins (22a) and far main fins (22b) which are connected to form a V shape, the connection positions of the near main fins are sunken towards the direction of the pipe wall, and the connection positions of the near main fins and the far main fins are not in contact with the pipe wall (11).
3. An evaporating tube as in claim 2, wherein: the holes are of two types, namely a big hole groove (22d) and a small hole groove (22c) which are respectively arranged on the auxiliary fin (22); wherein,
the starting ends of the large hole grooves (22d) and the small hole grooves (22c) in the spacing direction of the adjacent fins start from the free ends of the secondary fins (22);
the terminating ends of the large-hole grooves (22d) in the spacing direction of the adjacent fins are terminated at the connecting ends of the secondary fins (22);
the termination of the small hole groove (22c) in the direction of spacing between adjacent fins terminates at the junction of the proximal main fin portion (22a) and the distal main fin portion (22 b).
4. An evaporating tube as in claim 3, wherein: the large-hole grooves (22d) and the small-hole grooves (22c) are alternately arranged on the secondary fins (22) along a spiral advancing direction.
5. An evaporating tube as in claim 2, wherein: in the same fin (2), the angle α between the near main fin portion (22a) and the tip of the main fin (21) ranges from: alpha is more than 0 degree and less than 90 degrees.
6. The evaporating tube of claim 1, wherein: in the adjacent fins (2), the main fin (21) of one fin (2) is overlapped with the free end of the secondary fin (22) of the other fin (2), and the cross section of a structure formed by connecting the main fin (21) of one fin (2) with the main fin (21) and the secondary fin (22) of the other fin (2) is M-shaped.
7. The evaporating tube of claim 1, wherein: the expansion length of the secondary fins (22) in the interval direction of the adjacent fins is smaller than the height h of the primary fins (21).
8. The evaporating tube of claim 1, wherein: the fin portion is arranged on the outer surface of the pipe wall (11) of the pipe body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291136.0U CN209857438U (en) | 2019-03-07 | 2019-03-07 | Evaporating pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291136.0U CN209857438U (en) | 2019-03-07 | 2019-03-07 | Evaporating pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209857438U true CN209857438U (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920291136.0U Active CN209857438U (en) | 2019-03-07 | 2019-03-07 | Evaporating pipe |
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| CN (1) | CN209857438U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737646A (en) * | 2019-03-07 | 2019-05-10 | 常州九洲创胜特种铜业有限公司 | Evaporation tube and its application and preparation method |
-
2019
- 2019-03-07 CN CN201920291136.0U patent/CN209857438U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737646A (en) * | 2019-03-07 | 2019-05-10 | 常州九洲创胜特种铜业有限公司 | Evaporation tube and its application and preparation method |
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Address after: 213000 Shudu 108, Jiangpai Village Committee, Qianhuang Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: Changzhou Jiuzhou Chuangsheng Special Copper Co., Ltd. Address before: 213000 Zhaiqiao Industrial Zone, Qianhuang Town, Wujin District, Changzhou City, Jiangsu Province Patentee before: Changzhou Jiuzhou Chuangsheng Special Copper Co., Ltd. |