CN116892855A - Microchannel single-row zigzag fin, fin assembly and heat exchanger - Google Patents
Microchannel single-row zigzag fin, fin assembly and heat exchanger Download PDFInfo
- Publication number
- CN116892855A CN116892855A CN202310990631.1A CN202310990631A CN116892855A CN 116892855 A CN116892855 A CN 116892855A CN 202310990631 A CN202310990631 A CN 202310990631A CN 116892855 A CN116892855 A CN 116892855A
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- Prior art keywords
- fin
- channel
- microchannel
- heat exchanger
- fin body
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- 238000004891 communication Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 description 10
- 238000005192 partition Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/048—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The application provides a microchannel single-row zigzag fin, a fin assembly and a heat exchanger. According to the application, the micro-channel structures are arranged on each contact surface of the fin body and the flowing medium, so that the heat exchange area can be effectively increased, and when the flowing medium flows through the channels of the fin body, more sufficient heat convection can be performed between the flowing medium and the fin body, so that the heat exchange performance of the fin is improved; meanwhile, the whole volume of the heat exchanger is considered to be controlled in a certain range, the micro-channel structure is designed on the fin body, so that the whole volume of the heat exchanger is not increased, and the height, the sheet distance and the like of the fin body can be ensured not to be increased, so that the whole volume of the heat exchanger is influenced.
Description
Technical Field
The application belongs to the technical field of heat exchangers, and particularly relates to a microchannel single-row zigzag fin, a fin assembly and a heat exchanger.
Background
At present, various heat exchangers are required to dissipate heat in various fields such as aviation, aerospace, navigation, automobiles, artificial intelligence and the like, and plate-fin heat exchangers using superposed fins are widely applied due to the advantages of compact structure, small occupied space, high heat exchange efficiency and the like. However, with the continuous progress of high technology, the heat exchange performance of the plate-fin heat exchanger in many fields is also more and more severely required, so that the heat exchange performance of the plate-fin heat exchanger needs to be continuously improved; the heat exchange performance of the existing plate-fin heat exchanger mainly depends on the heat exchange performance of the fins, and the main influencing factor of the heat exchange performance of the fins is the contact area between the surface of the fins and the fluid medium flowing through the heat exchanger, so that increasing the contact area has become an important means for improving the heat exchange performance of the fins, and the size of the plate-fin heat exchanger is usually severely limited, so that the heat exchange contact area of the fins needs to be increased within a limited volume range to further enhance the heat exchange performance.
Patent CN201320794201.4 designs a triangular fin, which increases the heat dissipation area and further improves the performance of the heat exchanger by reducing the wave distance and increasing the fin height, while the fin is limited by the volume by adjusting the size to increase the heat exchange area. Patent CN202010810663.5 designs a torsion tortuous shutter fin, twists the circular arc surface of the indent curved portion of the tortuous shutter fin and can effectively increase heat transfer area, but this kind of fin structure is comparatively complicated, leads to the processing degree of difficulty to increase, also easily laying dust simultaneously.
Disclosure of Invention
Therefore, the application provides the microchannel single-row zigzag fin, the fin assembly and the heat exchanger, and the microchannel structure can effectively enlarge the heat exchange area on the premise of not changing the whole volume of the heat exchanger.
In order to solve the problems, the application provides a microchannel single-row zigzag fin, which comprises a fin body, wherein a plurality of microchannels for increasing heat exchange area are arranged on the contact surface of the fin body and a flowing medium, and the microchannels are arranged along the flowing direction of the flowing medium.
In some embodiments, the length of the microchannel is equal to the length of the fin body.
In some embodiments, the fin body is bent back and forth along a width direction of the fin body to form a first channel and a second channel which are staggered in sequence.
In some embodiments, the first channel and the second channel are open structures, and the directions of the openings of the first channel and the second channel are opposite.
In some embodiments, the microchannel comprises a convex channel and a concave channel, the convex channel and the concave channel being juxtaposed.
The fin assembly comprises at least two microchannel single-row zigzag fins, and the at least two microchannel single-row zigzag fins are staggered back and forth along the flow direction of the flowing medium.
In some embodiments, adjacent microchannel single row zigzag fins are offset by a distance less than the channel width of the fin body.
In some embodiments, the microchannels of adjacent microchannel single row zigzag fin connection portions are in communication with each other.
A heat exchanger comprises a fin assembly, wherein the fin assembly is the fin assembly.
The microchannel single-row zigzag fin, the fin assembly and the heat exchanger provided by the application have the following beneficial effects:
micro-channel structures are arranged on each contact surface of the fin body and the flowing medium, the heat exchange area can be effectively increased through the micro-channel structures, when the flowing medium flows through the channels of the fin body, more sufficient heat convection can be carried out between the flowing medium and the fin body, and the heat exchange performance of the fin is improved; meanwhile, the whole volume of the heat exchanger is considered to be controlled within a certain range, the micro-channel structure is designed on the fins, so that the whole volume of the heat exchanger is not increased, and the height, the sheet distance and the like of the fins can be ensured not to be increased, thereby influencing the whole volume of the heat exchanger.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the application, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present application, should fall within the ambit of the technical disclosure.
FIG. 1 is a schematic view of a conventional single row fin structure;
FIG. 2 is a schematic cross-sectional view of a conventional single row fin;
FIG. 3 is a schematic view of a conventional zigzag fin structure;
FIG. 4 is an A-direction view of a conventional zigzag fin;
FIG. 5 is a schematic view of the structure of a microchannel single row zigzag fin of the present application;
FIG. 6 is a schematic cross-sectional view of a microchannel single row zigzag fin of the present application;
FIG. 7 is a schematic view of the structure of a single row of zigzag fins of a microchannel after being resized in accordance with the present application;
FIG. 8 is a schematic cross-sectional view of a single row of zigzag fins of the present application with the micro-channels varied in size;
FIG. 9 is a schematic view of a fin according to an embodiment of the present application;
FIG. 10 is a B-direction view of a fin according to an embodiment of the present application.
The reference numerals are expressed as: 1-fin body; 101-a first channel; 102-a second channel; 21-a raised channel; 22-groove channels; 3-fin assembly.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.
Referring to fig. 1, 2, 5 and 6 in combination, according to an embodiment of the present application, a microchannel single-row zigzag fin is provided, including a fin body 1, where a plurality of microchannels are disposed on the fin body 1, and the microchannels are disposed along a flow direction of a flowing medium, and are used for increasing a heat exchange area.
According to the application, the contact surface of the traditional fin body 1 and the flowing medium is provided with a plurality of micro-channels, the heat exchange area can be effectively increased through the micro-channel structures, when the flowing medium flows through the channels of the fin body 1, more sufficient heat convection can be carried out between the flowing medium and the fin body 1, and the heat exchange performance of the fin body 1 is improved; meanwhile, the whole size of the heat exchanger is considered to be controlled in a certain range, the micro-channel structure is designed on the fin body 1, so that the whole size of the heat exchanger is not increased, the height and the sheet distance of the fin body 1 can be ensured not to be increased, and the whole size of the heat exchanger is affected.
As shown in fig. 5 and 6, the fin body 1 is bent back and forth in the width direction to form a first channel 101 and a second channel 102 which are staggered in order. The first channel 101 and the second channel 102 are of an open structure, the opening directions of the first channel 101 and the second channel 102 are opposite, the cross sections of the first channel 101 and the second channel 102 are rectangular, and the cross sections are the same, in other embodiments, the cross sections of the first channel 101 and the second channel 102 may be different. When the fluid medium in the first channel 101 is a hot fluid, the fluid medium in the second channel 102 is a cold fluid; it is also possible that when the fluid medium in the first channel 101 is cold fluid, the fluid medium in the second channel 102 is hot fluid.
The length of the micro-channel is equal to that of the fin body 1, the micro-channel comprises a convex channel 21 and a concave channel 22, the convex channel 21 and the concave channel 22 are arranged in parallel, and the convex channel 21 and the concave channel 22 are opposite, that is, one concave channel 22 is formed when one convex channel 21 is formed. The convex channel 21 and the concave channel 22 are each rectangular-section micro-channel structures, and in addition, micro-channel structures with other shapes and sections can be arranged according to processing conditions instead. After the heat exchange fin body 1 with the micro-channel structure is adopted to replace the traditional zigzag fin body 1, when flowing medium flows through the fin body 1, the contact area between the fin body 1 and the flowing medium can be obviously increased, more sufficient convection heat exchange can be carried out between the flowing medium and the fin body 1, the heat exchange performance of the fin body 1 is enhanced, and the heat exchange of the contact surfaces of the fin body 1 and the flowing medium is more uniform, so that the heat exchange efficiency of the fin body 1 is increased.
In this embodiment, the ends of the first channel 101 and the second channel 102 away from the opening are respectively closed structures. The closed structure of the first channel 101 is provided with a convex channel 21, and the width of the convex channel 21 at the middle position of the closed structure is larger than that of the convex channels 21 at the two sides of the first channel 101; the closed structure of the second channel 102 is provided with a groove channel 22, and the width of the groove channel 22 at the middle position of the closed structure is larger than that of the groove channels 22 at the two sides of the first channel 101. When the flowing medium in the first channel 101 and in the second channel 102 flows, the heat exchange area of the flowing medium at the closed structure is larger and the flow resistance is optimized.
Referring to fig. 7 and 8, in practical application, the micro-channel structure with another size can be obtained by adjusting the sizes of the protruding channels 21 and the recessed channels 22 under the condition that the overall thickness, the height and the sheet distance of the traditional fin body 1 are unchanged according to the actually required heat exchange efficiency and flow resistance requirements, and as can be seen from fig. 7 and 8, the channel width sizes and the channel depth sizes of the protruding channels 21 and the recessed channels 22 after the size change are increased, the flow resistance can be optimized, the contact area between the fins and the flowing medium can be changed to optimize the heat exchange efficiency, and the advantages of the protruding channels 21 and the recessed channels 22 can enable the fin body 1 to achieve better comprehensive performance.
Referring to fig. 5 and 6, the contact area between the conventional single-row fins and the flowing medium is limited, so that the overall heat exchange efficiency of the heat exchanger can be limited to a certain extent, and the fin body 1 of the conventional zigzag fin is not provided with a micro-channel, while the embodiment takes the conventional fin single-row structure as a reference, and under the condition of ensuring that the overall thickness, the height and the sheet distance of the conventional fin are unchanged, the zigzag fin single-row structure provided with the micro-channel structure is obtained, so that the overall size of the fin can be ensured not to be increased, namely the overall volume of the heat exchanger can not be increased, and the contact area between each contact surface of the fin body 1 and the flowing medium can be increased, so that the heat exchange of each contact surface of the fin body 1 is more uniform.
Referring to fig. 3, 4, 9 and 10 in combination, a fin assembly 3 includes at least two of the above-mentioned microchannel single-row zigzag fins, and at least two of the microchannel single-row zigzag fins are disposed in a staggered manner in a flow direction of a flowing medium. The fin assemblies 3 are commonly arranged in a staggered manner and in a sequential manner, wherein the staggered manner or the sequential manner refers to the arrangement of the flowing medium in the flowing direction. According to the use requirement, the embodiment adopts a staggered arrangement mode, and the flowing medium can form a bypass flow outside the pipeline, so that the disturbing force born by the flowing medium can be increased, and the heat exchange coefficient is correspondingly mentioned.
Specifically, the staggered distance of the adjacent micro-channel single-row zigzag fins is smaller than the channel width of the fin body 1, namely, the adjacent fin bodies 1 are connected with each other, so that the first channels 101 and the second channels 102 are in a communicated state, and the flow velocity of the flowing medium in the first channels 101 and the second channels 102 at the joint can be adjusted by adjusting the staggered distance. The micro-channels of the connecting parts of the adjacent micro-channels and the single-row zigzag fins are mutually communicated, in the embodiment, the micro-channels are straight channels along the flowing direction of the flowing medium, in addition, the micro-channels can be arranged to be non-straight channels in other forms along the flowing medium direction according to the sheet type of the fin body 1, and the fin assembly 3 can be independently used or mixed with other fin assemblies 3 according to actual conditions.
The heat exchanger comprises a fin assembly, wherein the fin assembly is the fin assembly 3, the heat exchanger further comprises a heat exchange core, an end socket and fluid inlet and outlet connecting pipes, the heat exchange core is composed of a plurality of basic flow channel units and end plates on two sides, each basic flow channel unit comprises the fin assembly 3, a flow deflector, a partition plate and a seal, the partition plate separates the fin assembly 3 in the upper and lower directions, in the embodiment, a groove channel 22 is arranged on the outer side of a closed structure of a first channel 101, a communication channel is formed between the groove channel 22 and an upper partition plate, a protruding channel 21 is arranged on a closed structure of a second channel 102, and a communication channel is formed between the protruding channel 21 and a lower partition plate, so that the heat exchange area between the fin assembly 3 and the partition plate can be further improved.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the application.
Claims (9)
1. The microchannel single-row zigzag fin is characterized by comprising a fin body (1), wherein a plurality of microchannels for increasing heat exchange area are arranged on the contact surface of the fin body (1) and a flowing medium, and the microchannels are arranged along the flowing direction of the flowing medium.
2. The microchannel single row zigzag fin according to claim 1, wherein the length of the microchannel is equal to the length of the fin body (1).
3. The microchannel single-row zigzag fin according to claim 1, wherein the fin body (1) is bent back and forth along the width direction of the fin body (1) to form a first channel (101) and a second channel (102) which are staggered in sequence.
4. A microchannel single row zigzag fin according to claim 3, wherein the first channel (101) and the second channel (102) are of an open structure, the openings of the first channel (101) and the second channel (102) being in opposite directions.
5. The microchannel single row zigzag fin according to claim 4, wherein the microchannel comprises a convex channel (21) and a concave groove channel (22), the convex channel (21) and the concave groove channel (22) being juxtaposed.
6. A fin assembly comprising at least two microchannel single row zigzag fins according to any one of claims 1 to 5, at least two of the microchannel single row zigzag fins being disposed offset back and forth in the flow direction of the flowing medium.
7. The fin assembly according to claim 6, wherein adjacent ones of said microchannel single row zigzag fins are staggered by a distance less than the channel width of said fin body (1).
8. The fin assembly of claim 7, wherein the microchannels at the junction of adjacent ones of said microchannel single row zigzag fins are in communication with each other.
9. A heat exchanger comprising a fin assembly, wherein the fin assembly is as claimed in any one of claims 6 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310990631.1A CN116892855A (en) | 2023-08-07 | 2023-08-07 | Microchannel single-row zigzag fin, fin assembly and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310990631.1A CN116892855A (en) | 2023-08-07 | 2023-08-07 | Microchannel single-row zigzag fin, fin assembly and heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116892855A true CN116892855A (en) | 2023-10-17 |
Family
ID=88315013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310990631.1A Pending CN116892855A (en) | 2023-08-07 | 2023-08-07 | Microchannel single-row zigzag fin, fin assembly and heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116892855A (en) |
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2023
- 2023-08-07 CN CN202310990631.1A patent/CN116892855A/en active Pending
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