CN211903880U - Micro-channel heat exchange flat tube and heat exchange assembly - Google Patents
Micro-channel heat exchange flat tube and heat exchange assembly Download PDFInfo
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- CN211903880U CN211903880U CN201921994473.2U CN201921994473U CN211903880U CN 211903880 U CN211903880 U CN 211903880U CN 201921994473 U CN201921994473 U CN 201921994473U CN 211903880 U CN211903880 U CN 211903880U
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Abstract
The utility model relates to a microchannel heat transfer flat tube and heat exchange assembly, it has solved the problem that current heat exchanger heat exchange efficiency is low, it includes the flat tube body that is flat tubulose and axial has the heat transfer passageway group, the heat transfer passageway group includes two lateral part heat transfer passageways that are located flat tube body along width direction both sides and correspond the setting each other, have a plurality of middle heat transfer passageways that equidistant setting in proper order between two lateral part heat transfer passageways, flat tube body both sides have the outer fin that dispels the heat respectively, the outer fin that dispels the heat extends and is open or closed along flat tube body width direction; or a plurality of heat exchange tooth parts are arranged in the heat exchange channel group, and the heat exchange tooth parts are respectively positioned on the circumferential inner sides of the lateral heat exchange channels close to the circumferential outer surface of the flat tube body and/or positioned on the circumferential inner sides of the middle heat exchange channels close to the circumferential outer surface of the flat tube body. The utility model has the advantages that: the heat exchanger has the advantages of good heat exchange effect, simple structure, low cost, improved bearing capacity and the like.
Description
Technical Field
The utility model belongs to the technical field of indirect heating equipment, concretely relates to flat pipe of microchannel heat transfer and heat exchange assemblies.
Background
The heat exchanger is an important unit device in industries of oil refining, chemical engineering, environmental protection, energy, electric power and the like, generally, in the construction of chemical plants, the heat exchanger accounts for a large proportion of total investment, and at present, heat exchangers commonly used at home and abroad can be mainly divided into two types, namely a tube type heat exchanger and a plate type heat exchanger. For the condition of gas heat exchange, the mode of adding fins is generally adopted to strengthen the heat exchange, generally speaking, the plate-fin heat exchanger is widely applied to the gas-gas heat exchange, and the tube-fin heat exchanger is more applied to the gas-liquid heat exchange. For the plate-fin heat exchanger, because the local part of the plate-fin heat exchanger is not firmly brazed in the brazing process to form a weak link, the plate-fin heat exchanger is determined to be incapable of bearing higher absolute pressure or higher relative pressure in a fault state, so people develop the flat tube-fin heat exchanger, namely, a flat tube bundle is used for replacing a round tube bundle, so that the heat exchange area can be effectively improved, the heat exchange area is close to the heat efficiency of a plate-shell type heat exchanger, and simultaneously, the flat tube heat exchanger can bear higher pressure, the manufacturing industry is simple, but for a simple flat tube heat exchanger, in the petrochemical production, high-viscosity fluid is heated in a light tube of the heat exchanger, the temperature of the fluid near the tube wall is often overhigh, the fluid heat exchange at the central part of the tube is insufficient, namely, the fluid heat exchange is uneven and insufficient, so that the heat exchange efficiency of equipment is influenced, and if the circulation, this kind of mode appears lodging phenomenon easily in turnover, transportation and course of working, and in addition, the heat transfer area in the unit volume is less, leads to the heat transfer ability not good.
In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, the chinese patent document discloses a microchannel flat tube for a heat exchanger and a microchannel flat tube heat exchanger thereof
[ CN201821093193.X ], including two parallel arrangement's pressure manifold, be provided with a plurality of flat tube main part between the pressure manifold, the both ends of flat tube main part communicate a pressure manifold respectively, flat tube main part width is less than the pressure manifold width, flat tube main part is provided with radiating fin between two liang, radiating fin one side or both sides salient in flat tube main part, the one end that the flat tube main part was kept away from to supporting mechanism flushes with radiating fin.
Above-mentioned scheme has solved the problem that microchannel heat exchanger subassembly transported inconveniently, easy lodging to a certain extent, but this scheme still has a great deal of not enough, for example, the fluid heat transfer is inhomogeneous, and heat transfer area is little, influences the heat exchange efficiency of equipment.
Disclosure of Invention
The utility model aims at the above-mentioned problem, provide a reasonable in design, the heat transfer is even and the effectual flat pipe of microchannel heat transfer of heat transfer.
Another object of the utility model is to above-mentioned problem, provide a reasonable in design, heat exchange assembly that bearing capacity is good.
In order to achieve the above purpose, the utility model adopts the following technical proposal: the micro-channel heat exchange flat tube comprises a flat tube body which is in a flat tubular shape and is provided with a heat exchange channel group in the axial direction, wherein the heat exchange channel group comprises two side heat exchange channels which are positioned on two sides of the flat tube body in the width direction and are arranged correspondingly to each other, a plurality of middle heat exchange channels which are sequentially arranged at equal intervals are arranged between the two side heat exchange channels, two sides of the flat tube body in the width direction are respectively provided with a heat dissipation outer fin which is positioned on one side of the side heat exchange channel and is positioned on one side far away from the middle heat exchange channel, and the heat dissipation outer fins extend in the width direction of;
or a plurality of heat exchange tooth parts are arranged in the heat exchange channel group, and the heat exchange tooth parts are respectively positioned on the circumferential inner sides of the lateral heat exchange channels close to the circumferential outer surface of the flat tube body and/or positioned on the circumferential inner sides of the middle heat exchange channels close to the circumferential outer surface of the flat tube body. The heat exchange tooth parts are arranged in the middle heat exchange channel and the side heat exchange channels to increase the heat exchange area, so that the heat exchange of the fluid is uniform, and the arrangement of the heat dissipation outer fins can avoid the damage to equipment caused by high temperature of the fluid.
In foretell microchannel heat transfer flat tube, the outer fin that dispels the heat all is curved form and the outer fin that dispels the heat and flat tub of body even formula structure as an organic whole, and the outer fin that dispels the heat includes the arc connecting portion that link to each other with flat tub of body, and the horizontal heat dissipation portion that the level set up is connected to the arc connecting portion, and horizontal heat dissipation portion and flat tub of body lateral surface flush.
In the above-mentioned microchannel heat exchange flat tube, the side part of the flat tube body is respectively provided with a heat dissipation outer fin, and the heat dissipation outer fins positioned at the two sides of the flat tube body are arranged correspondingly or staggered one by one.
In foretell microchannel heat transfer flat tube, flat tub of body lateral part sets up two outer fins of dispelling the heat respectively, thereby and the outer fin of dispelling the heat sets up each other correspondingly and forms fork structure.
In foretell microchannel heat transfer flat tube, flat tub of body lateral part sets up two outer fins of dispelling the heat respectively, thereby the outer fin of dispelling the heat corresponds each other and sets up and the horizontal heat dissipation portion links to each other two outer fins of dispelling the heat to be closed structure through vertical connecting portion between keeping away from the one end of arc connecting portion, forms outside heat transfer passageway between two outer fins of dispelling the heat, and outside heat transfer passageway, lateral part heat transfer passageway and middle heat transfer passageway constitute foretell heat transfer passageway group jointly. The heat radiating fins with the closed structures effectively improve the heat exchange area.
In foretell microchannel heat transfer flat tube, its characterized in that, lateral part heat transfer passageway and middle heat transfer passageway do not set up the surplus inboard of heat transfer tooth portion and be straight form, and lateral part heat transfer passageway is close to the heat transfer tooth portion of flat tub of body upper and lower surface and middle heat transfer passageway is close to the heat transfer tooth portion of flat tub of body upper and lower surface and all corresponds the setting each other. The arrangement of the heat exchange tooth part can ensure that the fluid heat exchange is uniform.
In the above-mentioned microchannel heat exchange flat tube, the heat exchange tooth portion is any one of an arc tooth shape, a rectangular tooth shape and a triangular tooth shape. The shape of the heat exchange tooth part can be freely set as required, and different heat exchange effects are achieved.
In the micro-channel heat exchange flat tube, the width of the flat tube body is 12mm-16 mm; the thickness of the flat tube body is 1.4mm-1.44 mm; the tooth height of the heat exchange tooth part is larger than 0.15 mm.
The micro-channel heat exchange flat tube comprises two collecting pipes which are parallel to each other and vertically arranged, wherein one sides of the collecting pipes which correspond to each other are sequentially provided with a plurality of collecting pipe grooves respectively, the collecting pipe grooves on the two collecting pipes are arranged in a one-to-one correspondence mode respectively, a plurality of flat tube bodies which are parallel to each other and transversely arranged are arranged between the two collecting pipes, and end parts of the flat tube bodies are inserted into the collecting pipe grooves respectively.
In the heat exchange assembly, the distance between two adjacent collecting pipe grooves is 3-5 mm; the length of the collecting pipe groove is 12mm-16 mm; the width of the collecting pipe slot is 1.4mm-1.44 mm; the inner diameter of the collecting pipe is 12mm-16 mm; the thickness of the collecting pipe is 1.2mm-1.8 mm.
Compared with the prior art, the utility model has the advantages of: this flat tub of microchannel heat transfer simple structure, with low costs and increased heat transfer area, effectively improve heat transfer area and heat transfer efficiency, heat exchange assembly's setting has improved the bearing capacity simultaneously for this device can bear more fluid, has improved work efficiency.
Drawings
Fig. 1 is a partial structural schematic diagram of the present invention;
fig. 2 is a sectional view of the flat tube body of the present invention;
fig. 3 is a sectional view of a flat tube body structure in the first embodiment of the present invention;
fig. 4 is a sectional view of a flat tube body structure in the second embodiment of the present invention;
fig. 5 is a sectional view of a flat tube body structure in the third embodiment of the present invention;
fig. 6 is a schematic view of a partial structure of a header according to a fourth embodiment of the present invention.
In the figure, the flat tube body 1, the heat exchange channel group 2, the side heat exchange channel 21, the middle heat exchange channel 22, the heat dissipation outer fin 23, the arc-shaped connecting portion 231, the horizontal heat dissipation portion 232, the vertical connecting portion 233, the heat exchange tooth portion 24, the external heat exchange channel 25, the heat exchange assembly 3, the header 31, and the header groove 32.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example one
As shown in fig. 1-2, the microchannel heat exchange flat tube includes a flat tube body 1 having a heat exchange channel group 2 in a flat tubular shape and in an axial direction, the heat exchange channel group 2 includes two side heat exchange channels 21 located at two sides of the flat tube body 1 in a width direction and arranged correspondingly to each other, a plurality of intermediate heat exchange channels 22 arranged at equal intervals in sequence are provided between the two side heat exchange channels 21, two sides of the flat tube body 1 in the width direction are respectively provided with a heat dissipation outer fin 23 located at one side of the side heat exchange channel 21 and located at a side far from the intermediate heat exchange channel 22, and the heat dissipation outer fin 23 extends in the width direction of the flat tube body 1 and is in an open or closed shape;
or a plurality of heat exchange tooth parts 24 are arranged in the heat exchange channel group 2, and the heat exchange tooth parts 24 are respectively positioned on the circumferential inner sides of the lateral heat exchange channels 21 close to the circumferential outer surface of the flat tube body 1 and/or on the circumferential inner sides of the middle heat exchange channels 22 close to the circumferential outer surface of the flat tube body 1. The purpose of uniform fluid heat exchange is achieved by increasing the heat exchange area of the heat dissipation outer fins 23 and by utilizing the heat exchange tooth parts 24 arranged in the middle heat exchange channel 22 and the side heat exchange channels 21.
Wherein, the outer fin 23 of dispelling the heat all be curved form and outer fin 23 of dispelling the heat and flat tub of body 1 even formula structure as an organic whole, and outer fin 23 of dispelling the heat includes the arc connecting portion 231 that links to each other with flat tub of body 1, and arc connecting portion 231 is connected with the horizontal heat dissipation portion 232 that the level set up, and horizontal heat dissipation portion 232 flushes with flat tub of body 1 lateral surface.
Further, the remaining inner sides of the lateral heat exchange channels 21 and the middle heat exchange channels 22, which are not provided with the heat exchange tooth portions 24, are straight, and the heat exchange tooth portions 24 of the lateral heat exchange channels 21, which are close to the upper surface and the lower surface of the flat tube body 1, and the heat exchange tooth portions 24 of the middle heat exchange channels 22, which are close to the upper surface and the lower surface of the flat tube body 1, are all arranged correspondingly to each other. The distance between two adjacent middle heat exchange channels 22 is 0.23mm-0.31mm, and the length of each middle heat exchange channel 22 along the width direction of the flat tube body 1 is 0.87 mm.
As can be seen, the heat exchange tooth portion 24 is any one of an arc tooth shape, a rectangular tooth shape, and a triangular tooth shape.
In detail, the width of the flat tube body 1 is 12mm-16 mm; the thickness of the flat tube body 1 is 1.4mm-1.44 mm; the tooth height of the heat exchange tooth part 24 is larger than 0.15 mm. The thickness of the distance between the upper surface and the lower surface of the flat tube body 1 and the middle heat exchange channel 22 is 0.25mm-0.33 mm.
As shown in fig. 3, the side portions of the flat tube body 1 are respectively provided with one heat dissipation outer fin 23, and the heat dissipation outer fins 23 located at the two sides of the flat tube body 1 are arranged correspondingly or staggered one by one.
Example two
As shown in fig. 4, two heat dissipation outer fins 23 are respectively disposed on the side of the flat tube body 1, and the heat dissipation outer fins 23 are disposed corresponding to each other to form a fork-shaped structure.
EXAMPLE III
As shown in fig. 5, the side portion of the flat tube body 1 is provided with two heat dissipation outer fins 23 respectively, the heat dissipation outer fins 23 are correspondingly arranged and the horizontal heat dissipation portion 232 is connected to one end of the arc-shaped connection portion 231 through the vertical connection portion 233, so that the two heat dissipation outer fins 23 are connected to form a closed structure, an external heat exchange channel 25 is formed between the two heat dissipation outer fins 23, and the external heat exchange channel 25, the side heat exchange channel 21 and the intermediate heat exchange channel 22 jointly form the heat exchange channel group 2. The thickness of the two side surfaces of the flat tube body 1 from the external heat exchange channel 25 is 0.36mm-0.46mm, and the length of the external heat exchange channel 25 along the width direction of the flat tube body is 0.68 mm.
Example four
As shown in fig. 6, the structure, principle and implementation steps of this embodiment are similar to those of the first embodiment and the second embodiment, and the difference lies in that, in this embodiment, the heat exchange assembly 3 of the microchannel heat exchange flat tube includes two parallel and vertically arranged headers 31, one sides of the headers 31 corresponding to each other are respectively and sequentially provided with a plurality of header slots 32, the header slots 32 on the two headers 31 are respectively and correspondingly arranged one by one, a plurality of flat tube bodies 1 parallel and transversely arranged are arranged between the two headers 31, and the ends of the flat tube bodies 1 are respectively inserted into the header slots 32. The pressure resistance of the collecting pipe is more than 13.5 MPa.
Specifically, the distance between two adjacent collecting pipe slots 32 is 3mm-5 mm; the length of the collecting pipe slot 32 is 12mm-16 mm; the width of the collecting pipe slot 32 is 1.4mm-1.44 mm; the inner diameter of the collecting pipe 31 is 12mm-16 mm; the thickness of the collecting pipe 31 is 1.2mm-1.8 mm.
The principle of the embodiment is as follows: when the heat exchanger works, cold water or fluid with a refrigerant enters from the collecting pipe 3 at one end and flows through the flat pipe body 1 to exchange heat in the heat exchange channel group 2, the heat dissipation outer fins 23 dissipate heat of the fluid, the fluid flows into the collecting pipe 3 at the other end after heat exchange and flows out from the collecting pipe 3 at the other end, and the fluid flows through the flat pipe body 1 with the heat exchange tooth parts 24, so that the purpose of uniform heat exchange is achieved, and the device is prevented from being damaged due to overhigh temperature of the fluid due to the arrangement of the heat dissipation outer fins 23.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms of the flat tube body 1, the heat exchange channel group 2, the side heat exchange channels 21, the middle heat exchange channel 22, the heat dissipation outer fins 23, the arc-shaped connecting portions 231, the horizontal heat dissipation portions 232, the vertical connecting portions 233, the heat exchange tooth portions 24, the outer heat exchange channels 25, the heat exchange assembly 3, the header 31, and the header groove 32 are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (10)
1. A micro-channel heat exchange flat tube comprises a flat tube body (1) which is in a flat tubular shape and is provided with a heat exchange channel group (2) in the axial direction, wherein the heat exchange channel group (2) comprises two side heat exchange channels (21) which are positioned on two sides of the flat tube body (1) along the width direction and are arranged correspondingly to each other, and a plurality of middle heat exchange channels (22) which are arranged at equal intervals in sequence are arranged between the two side heat exchange channels (21), and the micro-channel heat exchange flat tube is characterized in that two sides of the flat tube body (1) along the width direction are respectively provided with a heat dissipation outer fin (23) which is positioned on one side of the side heat exchange channels (21) and is positioned on one side far away from the middle heat exchange channels (22), and the heat dissipation outer fins (23) extend along the width direction;
or a plurality of heat exchange tooth parts (24) are arranged in the heat exchange channel group (2), and the heat exchange tooth parts (24) are respectively positioned on the circumferential inner sides of the side heat exchange channels (21) close to the circumferential outer surface of the flat tube body (1) and/or on the circumferential inner sides of the middle heat exchange channels (22) close to the circumferential outer surface of the flat tube body (1).
2. The micro-channel heat exchange flat tube according to claim 1, wherein the heat dissipation outer fins (23) are all curved, the heat dissipation outer fins (23) and the flat tube body (1) are connected into an integral structure, the heat dissipation outer fins (23) comprise arc-shaped connecting portions (231) connected with the flat tube body (1), the arc-shaped connecting portions (231) are connected with horizontally arranged horizontal heat dissipation portions (232), and the horizontal heat dissipation portions (232) are flush with the outer side face of the flat tube body (1).
3. The microchannel heat exchange flat tube according to claim 2, wherein the side parts of the flat tube body (1) are respectively provided with one heat dissipation outer fin (23), and the heat dissipation outer fins (23) on the two sides of the flat tube body (1) are correspondingly arranged or staggered one by one.
4. The microchannel heat exchange flat tube according to claim 2, wherein two heat dissipation outer fins (23) are respectively arranged on the side part of the flat tube body (1), and the heat dissipation outer fins (23) are arranged correspondingly to each other to form a fork-shaped structure.
5. The micro-channel heat exchange flat tube according to claim 2, wherein two heat dissipation outer fins (23) are respectively arranged on the side portion of the flat tube body (1), the heat dissipation outer fins (23) are arranged correspondingly to each other, one end of the horizontal heat dissipation portion (232) far away from the arc-shaped connecting portion (231) is connected through the vertical connecting portion (233) so as to connect the two heat dissipation outer fins (23) into a closed structure, an external heat exchange channel (25) is formed between the two heat dissipation outer fins (23), and the external heat exchange channel (25), the side heat exchange channel (21) and the middle heat exchange channel (22) jointly form the heat exchange channel group (2).
6. The microchannel heat exchange flat tube according to any one of claims 1 to 5, wherein the remaining inner sides of the side heat exchange channels (21) and the middle heat exchange channels (22) not provided with the heat exchange teeth (24) are flat, and the heat exchange teeth (24) of the side heat exchange channels (21) close to the upper and lower surfaces of the flat tube body (1) and the heat exchange teeth (24) of the middle heat exchange channels (22) close to the upper and lower surfaces of the flat tube body (1) are arranged correspondingly to each other.
7. The microchannel heat exchange flat tube according to claim 6, wherein the heat exchange teeth (24) are any one of arc-shaped teeth, rectangular teeth and triangular teeth.
8. The microchannel heat exchange flat tube according to claim 6, wherein the width of the flat tube body (1) is 12mm-16 mm; the thickness of the flat pipe body (1) is 1.4mm-1.44 mm; the tooth height of the heat exchange tooth part (24) is larger than 0.15 mm.
9. A heat exchange assembly (3) adopting the microchannel heat exchange flat tube as claimed in any one of claims 1 to 8, comprising two header pipes (31) which are parallel to each other and vertically arranged, wherein one sides of the header pipes (31) which correspond to each other are respectively and sequentially provided with a plurality of header grooves (32), the header grooves (32) on the two header pipes (31) are respectively arranged in a one-to-one correspondence manner, a plurality of flat tube bodies (1) which are parallel to each other and transversely arranged are arranged between the two header pipes (31), and the end parts of the flat tube bodies (1) are respectively inserted into the header grooves (32).
10. A heat exchange module (3) according to claim 9, characterized in that the distance between two adjacent header slots (32) is 3mm-5 mm; the length of the collecting pipe groove (32) is 12mm-16 mm; the width of the collecting pipe groove (32) is 1.4mm-1.44 mm; the inner diameter of the collecting pipe (31) is 12mm-16 mm; the thickness of the collecting pipe (31) is 1.2mm-1.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921994473.2U CN211903880U (en) | 2019-11-18 | 2019-11-18 | Micro-channel heat exchange flat tube and heat exchange assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921994473.2U CN211903880U (en) | 2019-11-18 | 2019-11-18 | Micro-channel heat exchange flat tube and heat exchange assembly |
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| CN211903880U true CN211903880U (en) | 2020-11-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739610A (en) * | 2021-09-24 | 2021-12-03 | 珠海格力电器股份有限公司 | Heat storage device and air conditioning unit |
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- 2019-11-18 CN CN201921994473.2U patent/CN211903880U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739610A (en) * | 2021-09-24 | 2021-12-03 | 珠海格力电器股份有限公司 | Heat storage device and air conditioning unit |
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