CN108548436A - Based on bionical dot matrix small staggeredly alveolar heat exchanger core body and heat exchanger - Google Patents
Based on bionical dot matrix small staggeredly alveolar heat exchanger core body and heat exchanger Download PDFInfo
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- CN108548436A CN108548436A CN201810589823.0A CN201810589823A CN108548436A CN 108548436 A CN108548436 A CN 108548436A CN 201810589823 A CN201810589823 A CN 201810589823A CN 108548436 A CN108548436 A CN 108548436A
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- Prior art keywords
- heat exchanger
- dot matrix
- rib
- layer
- bionical
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/04—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being spirally coiled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of based on the small staggeredly alveolar heat exchanger core body of bionical dot matrix, the core includes shell, core is divided into two layers by inside by heat exchanger plates, if being provided with dried layer dot matrix combinations of ribs in every layer of cavity, each layer of dot matrix combinations of ribs is made of several columns towards consistent discontinuous rib, each column discontinuous rib is in that empty linear array forms by more identical short ribs, the discontinuous rib of adjacent two layers is towards inconsistent, and there is the short rib of adjacent two layers contact point, every layer short rib to be all supported fixation by the short rib of the adjacent layer contacted therewith.Bionical element is fused in the design of heat exchanger by the present invention, designs small staggeredly alveolar heat exchanger, which all improves the performance of heat exchanger in terms of heat transfer coefficient, heat transfer area two, and light structure is suitable for aerospace heat exchanger.
Description
Technical field
The invention belongs to technical field of heat exchange equipment, and in particular to a kind of to be changed based on the small staggeredly alveolar of bionical dot matrix
Hot device core and heat exchanger.
Background technology
The application of heat exchanger in the industry is extremely wide, to realize that the fields such as power, chemical industry, ship, refrigeration and machinery are set
Standby low energy consumption and Effec-tive Function be unable to do without the design of advanced heat exchanger.For promoted heat exchanger exchange capability of heat, generally have with
Lower three kinds of means：Heat transfer temperature difference is improved, increases heat transfer area, increase convection transfer rate.In heat exchanger without phase-change, improve
Heat transfer temperature difference usually for example enables cold fluid and hot fluid adverse current realize by reasonable Arrangement runner, and increasing heat exchange area means that increase is changed
Hot device total volume reduces channel cross-section to arrange more multiple flow passages, and increasing convection transfer rate can be realized by flow-disturbing.From
From the point of view of current design of heat exchanger, most widely used is shell-and-tube heat exchanger and plate heat exchanger.Wherein shell-and-tube heat exchanger
As shown in Figure 1, its due to volume is larger, heat exchange efficiency is relatively low and be dfficult to apply to need lightweight, small size heat exchanger field
It closes.The typical fin configuration of plate-fin heat exchanger is as shown in Fig. 2, the flowing in wherein traditional straight channel plate-fin heat exchanger lacks
Weary enough disturbances, the design of the channels such as corrugated fin generate more whirlpool and dead zone so that flowing again, lead to the shape resistance of flowing
Power increases and consumes more pump works.
In aerospace heat exchanger, the reliability for ensureing heat exchanger is also needed to while pursuing heat exchange efficiency, that is, is safeguarded
It is convenient, reliable for operation.When the fluid flowed in heat exchanger has corrosivity or precipitation, clast, it is necessary to assure heat exchanger is not easy
It blocks, therefore the channel of heat exchanger cannot be too small.
For current most heat exchangers in order to improve heat transfer effect, some design volumes are excessive to cause operating weight excessive, has
It is designed to that bionic microchannel but thinking are confined to tree-shaped bifurcated, does not adapt to aerospace field, electronic chip neck at this stage
High efficient heat exchanging demand in the high-end devices such as domain.The exchange capability of heat of traditional shell-and-tube heat exchanger is insufficient for current again simultaneously
Heat exchange demand.Good reliability is also needed in the heat exchanger of high-end field application more at present, reduces heat exchanger channel merely
Therefore approach to increase heat exchange area-volume ratio receives obstruction, i.e., cannot be changed by reducing channel size merely to realize
Heat is strengthened.
Invention content
The object of the present invention is to provide a kind of based on the small staggeredly alveolar heat exchanger core body of bionical dot matrix, passes through reference
Organism alveolar staggeredly, chamber spacer structure promote heat exchanger performance, while heat exchanger core body volume can be reduced, solved existing
There is the problem of heat exchanger core body high heat-exchanging performance and micro-volume are difficult to take into account.
It is a further object of the present invention to provide the heat exchangers with above-mentioned heat exchanger core body.
The technical solution adopted in the present invention is, special based on the small staggeredly alveolar heat exchanger core body of bionical dot matrix
Sign is that the core includes shell, and core is divided into two layers by inside by heat exchanger plates, if being provided with dried layer dot matrix in every layer of cavity
Formula combinations of ribs, each layer of dot matrix combinations of ribs are made of several columns towards consistent discontinuous rib, and each column discontinuous rib is by more
Identical short rib is in that empty linear array forms, and the discontinuous ribs of adjacent two layers is towards inconsistent, and the short rib of adjacent two layers has and connects
Contact, every layer short rib are all supported fixation by the short rib of the adjacent layer contacted therewith.
The features of the present invention also characterized in that：
Further, the short rib that adjacent two layers are in contact is in X-shaped, T shapes or L-shaped structure.
Further, the direction of each column discontinuous rib is flowed to medium into certain alternate angle.
Further, interlocking between each row discontinuous rib in each layer dot matrix combinations of ribs and fluid flow direction
Angle is between 20~160 °.
Further, the dot matrix combinations of ribs number of plies is 2~4 layers in every layer of cavity.
Further, the distance between two neighboring short rib and the ratio of short rib length exist in each row discontinuous rib
Between 0.1-2.
Further, the section of the short rib is polygon, camber line or combinations thereof.
Further, it is flowed to along medium in every layer of media flow cavity or flows to angled direction also with medium
It is provided with one or more baffles.
The present invention also provides a kind of heat exchangers, have above-mentioned based on the small staggeredly alveolar heat exchanger core of bionical dot matrix
Body.
Dot matrix structure of the present invention setting so that media flow cavity in form much staggeredly tiny flow cavity,
I.e. bionical staggeredly alveolar.It, can be anti-between two rows of runners around dot matrix flowing staggeredly when fluid flows in the flow cavity
The multiple disturbance for blending and generating conducive to heat exchange；The discontinuous rib of streamwise is arranged, and fluid can be made to be sent out in the flowing of discontinuities
Raw deflection utilizes inlet and outlet effect enhancing heat exchange.Fluid, which is stopped in boundary by wall surface, turns back, overturns, its generation is made to be vortexed,
Secondary Flow, and the enhanced heat exchange in runner below whereby.Dot matrix structure itself can not only greatly enhance the blending of fluid
Degree increases the coefficient of heat transfer, and the secondary surface energy that rib is formed increases heat exchange area..The structure can from increase the coefficient of heat transfer,
Increase the performance that two aspect of heat exchange area promotes heat exchanger.
The invention has the advantages that bionical element is fused in the design of heat exchanger by the present invention, small friendship is designed
Wrong alveolar heat exchanger, the structure improve the performance of heat exchanger, unit area heat exchange work(in terms of the coefficient of heat transfer, heat exchange area two
Rate reach traditional pipe type heat exchanger, 8 times or more of shell-and-tube heat exchanger, and reach with it is general stacked, plate heat exchanger
Performance, close to micro-channel heat exchanger performance.Simultaneously because its inner passage does not reach the size range of microchannel, dot matrix knot
Structure be arranged but also flowing in Secondary Flow and it is various disturbance it is more, thus can largely avoid the problem that block.Due to it
Unit volume heat transfer effect is stronger, smaller volume can be used to realize identical heat exchange demand, to realize reduction exchanger body
Long-pending purpose.Simultaneously because the reduction of its volume, internal cavities also reduce much compared with traditional heat exchangers, therefore identical heat exchange demand
Under required working medium can also reduce, that is, its operating weight can also be greatly reduced, than traditional plate-fin heat exchanger compared to can reduce
The weight of half.
Description of the drawings
Fig. 1 is traditional shell-and-tube heat exchanger structural schematic diagram；
Fig. 2 is the typical fin structure schematic diagram of traditional plate-fin heat exchanger；
Fig. 3 is the structural schematic diagram of the small staggeredly alveolar heat exchanger core body of dot matrix of the present invention；
Fig. 4 is the dot matrix combinations of ribs of X-shaped chi structure of the present invention；
Fig. 5 is the dot matrix combinations of ribs of T shapes chi structure of the present invention；
Fig. 6 is the dot matrix combinations of ribs of L-shaped chi structure of the present invention；
Fig. 7 is rib sectional drawing schematic diagram of the present invention；
Fig. 8 is partition board schematic diagram of the present invention.
In figure, 1. shells, 2. heat exchanger plates, 3. short ribs, 4. baffles.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to
These embodiments.
The present invention is based on the structures of the small staggeredly alveolar heat exchanger core body of bionical dot matrix as shown in figure 3, the core packet
Including shell 1, core is divided into two layers by inside by heat exchanger plates 2, respectively as the media flow cavity of cold and hot medium fluid flowing,
Heat exchange is carried out by heat exchanger plates 2.If being provided with dried layer dot matrix combinations of ribs in every layer of cavity, each layer of dot matrix rib groups
Conjunction is made of several columns towards consistent discontinuous rib, and each column discontinuous rib is in that empty linear array forms by more identical short ribs 3, often
The direction of row discontinuous rib is flowed to medium at certain alternate angle α (namely with heat exchanger core body sidewall at certain alternate angle α).It is adjacent
Two layers of discontinuous rib is towards inconsistent, i.e., upper to have certain angle β, and adjacent two layers between the short rib of interlayer and the lower short rib of interlayer
Short rib have contact point.
The short rib that adjacent two layers are in contact is in X-shaped chi structure, and crosspoint can be located at the central point of two short ribs, i.e., as schemed
Symmetrical structure shown in 4；It may be alternatively located at non-central point, such as T-shaped structure as shown in Figure 5 or L-shaped structure as shown in FIG. 6.
No matter which kind of structure, every layer short rib is all supported fixation by the short rib of the adjacent layer contacted therewith, to ensure that it can be steady
Fixed formation dot matrix structure, such as the short rib of the upper layer and lower layer being in contact is welded together.Each layer of dot matrix combinations of ribs
In each row discontinuous rib and fluid flow direction between alternate angle α preferably between 20~160 °, alternate angle α is too small can be so that change
Hot area increase is limited, and too conference makes flow area become very small.
In order to optimize the structure of heat exchanger core body, it is preferably provided with 2~4 layers of dot matrix combinations of ribs in every layer of cavity, is more than 4
When layer, heat exchange efficiency promotion is limited, but the volume and weight of heat exchanger core body steeply rises；No longer it is just then imitative less than 2 layers
The raw alveolar rib structure that interlocks.
Further, the spacing between discontinuous rib is too small, does not have and changes flow field to enhance the effect of heat exchange；Discontinuous rib
Between spacing it is too big, and the heat exchange area that can greatly decay weakens heat exchange, therefore, two neighboring short in each row discontinuous rib
The ratio of the distance between rib s and short rib length l are preferably between 0.1-2.
The section of short rib includes but are not limited to parallelogram, rectangle, triangle, trimming ellipse, cross in Fig. 7
Any regular of the shapes such as shape, L-shaped, hexagon, as straight line and/or camber line composition or irregular closed figure.
Further, height and spacing of short rib etc. are designed according to the shape of media flow cavity.Preferably, every layer short rib
Height account for the 1/4~1/2 of corresponding media flow cavity height, it is right such as a height of 0.2mm~40mm of media flow cavity layer
The single layer short-term item height answered can be 0.1mm~20mm.Preferably, adjacent column discontinuous rib in every layer of dot matrix combinations of ribs
Spacing and short rib height are equal, i.e., the square structure in section when the short space that fluid flows through.
Such as Fig. 8, in order to further increase heat exchange property, every layer of media flow cavity is interior along medium flow direction or and medium
It flows to angled direction and is additionally provided with one or more baffles 4, if the dot matrix combinations of ribs for changing layer is divided by baffle
The presence of dry group, baffle increases number of turns of the medium in staggeredly rib core, changes flow path, enhances exchange capability of heat.
Baffle can be set as n (n >=1), to which basin is divided into 1/ (n+1).N is specially how much to regard media flow cavity shape and size
Depending on, in general n=2,3,4 or so can reduce flow resistance, and can increase flow disturbance, enhancing heat exchange；Fluid is from rib
When the cavity that combination is formed flows through, blocked by baffle, and then turn back, to reinforce exchanging heat.It can depending on heat exchanger volume when baffle plate setting
Using using 10mm~200mm as interval, the closeer fluid of baffle is turned back more frequent, and the stronger while pressure drop that exchanges heat is higher.Outside heat exchanger
Shape overall dimensions, partition board form and thickness, inlet and outlet form, rib cross section parameter heat exchange power optionally and volume requirement and
Fixed, parameter is more and variation is comparatively arbitrary, is not given here fixed value.
By taking a kind of small staggeredly alveolar heat exchanger core body of dot matrix of the present invention as an example, heat exchange property calculating is carried out.Fetch earth 4 institutes
The dot matrix combinations of ribs number of plies shown is 2, the high 0.8mm of the single rib of fluid channel, rib spacing 1.6mm, no baffle, 65 ° of alternate angle,
Rib section take it is trapezoidal, rib top width a be 0.6mm, rib bottom width 1mm, i.e. rib area of section 0.4mm2, the disconnected X-type cross arrangement of intercostal.
The heat exchanger of the embodiment is calculated, when cold fluid and hot fluid mean logarithmic temperature difference is 35 DEG C or so, hot-fluid is close
Degree is about 8.5W/cm2, unit area heat exchange power reach traditional pipe type heat exchanger, 8 times or more of shell-and-tube heat exchanger, and
Reach with general stacked, plate heat exchanger performance, close to micro-channel heat exchanger performance.Simultaneously because its inner passage does not have
Reach the size range of microchannel, dot matrix structure setting but also in flowing Secondary Flow and various disturbances it is more, thus can be with
It largely avoids the problem that blocking.Since its unit volume heat transfer effect is stronger, smaller volume can be used to realize identical
Heat exchange demand, to realize the purpose for reducing heat exchanger volume.Simultaneously because the reduction of its volume, internal cavities are also more traditional to be changed
Hot device reduces very much, therefore working medium required under identical heat exchange demand can also reduce, that is, its operating weight can also be greatly reduced,
The weight of half can be reduced by being compared than traditional plate-fin heat exchanger.
Meanwhile from the point of view of the numerous range of geometrical variations and geometrical variations that staggeredly alveolar may have of heat exchanger, this
Invention provides a large amount of Bionic Design form and thinking, can further open up Bionic Design answering in real exchanger
With.
Claims (9)
1. based on the small staggeredly alveolar heat exchanger core body of bionical dot matrix, which is characterized in that the core includes shell, and inside is logical
Heat exchanger plates are crossed to be divided into core two layers, if being provided with dried layer dot matrix combinations of ribs in every layer of cavity, each layer of dot matrix rib
Combination is made of several columns towards consistent discontinuous rib, and each column discontinuous rib is in that empty linear array forms by more identical short ribs,
The discontinuous rib of adjacent two layers is towards inconsistent, and the short rib of adjacent two layers has contact point, and every layer short rib all by connecting therewith
The short rib of tactile adjacent layer is supported fixation.
2. according to claim 1 based on the small staggeredly alveolar heat exchanger core body of bionical dot matrix, which is characterized in that phase
Adjacent two layers of short rib being in contact is in X-shaped, T shapes or L-shaped structure.
3. according to claim 1 based on the small staggeredly alveolar heat exchanger core body of bionical dot matrix, which is characterized in that every
The direction of row discontinuous rib is flowed to medium into certain alternate angle.
4. according to claim 3 based on the small staggeredly alveolar heat exchanger core body of bionical dot matrix, which is characterized in that every
Alternate angle between each row discontinuous rib in one layer of dot matrix combinations of ribs and fluid flow direction is between 20~160 °.
5. according to claim 1 based on the small staggeredly alveolar heat exchanger core body of bionical dot matrix, which is characterized in that institute
It is 2~4 layers to state the dot matrix combinations of ribs number of plies in every layer of cavity.
6. according to claim 1 based on the small staggeredly alveolar heat exchanger core body of bionical dot matrix, which is characterized in that institute
The ratio of the distance between two neighboring short rib and short rib length in each row discontinuous rib is stated between 0.1-2.
7. according to claim 1 based on the small staggeredly alveolar heat exchanger core body of bionical dot matrix, which is characterized in that institute
The spacing for stating adjacent column discontinuous rib is equal with short rib height.
8. according to any one of claim 1-7 based on bionical dot matrix it is small staggeredly alveolar heat exchanger core body,
It is characterized in that, flows to along medium in every layer of media flow cavity or flow to angled direction with medium and be additionally provided with one
A or multiple baffles.
9. a kind of heat exchanger, have as described in any one of claim 1-8 based on the small alveolar that interlocks of bionical dot matrix
Heat exchanger core body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810589823.0A CN108548436A (en) | 2018-06-08 | 2018-06-08 | Based on bionical dot matrix small staggeredly alveolar heat exchanger core body and heat exchanger |
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| CN201810589823.0A CN108548436A (en) | 2018-06-08 | 2018-06-08 | Based on bionical dot matrix small staggeredly alveolar heat exchanger core body and heat exchanger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297320A (en) * | 2018-10-10 | 2019-02-01 | 中国科学院上海技术物理研究所 | A kind of lattice structure condenser manufactured using 3D printing technique |
| CN115791244A (en) * | 2023-02-06 | 2023-03-14 | 中国核动力研究设计院 | Modular microchannel compact heat exchange experiment body, method, equipment and medium |
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| JPS625096A (en) * | 1985-06-28 | 1987-01-12 | Nippon Denso Co Ltd | Lamination type heat exchanger |
| CN101100951A (en) * | 2007-07-13 | 2008-01-09 | 北京航空航天大学 | Gradually widened slot staggered rib passage suitable for internal cooling member as turbine blade |
| CN104215103A (en) * | 2014-09-24 | 2014-12-17 | 中科苏派能源科技靖江有限公司 | Ceramic heat exchange plate and ceramic heat exchange core for assembling same |
| CN104296566A (en) * | 2013-07-16 | 2015-01-21 | 无锡协丰节能技术有限公司 | Plate-fin heat exchanger |
| CN106705713A (en) * | 2016-12-09 | 2017-05-24 | 厦门大学 | Micro-channel heat exchanger with multiple flow path interconnection structures and method for manufacturing micro-channel heat exchanger |
| CN107687780A (en) * | 2017-08-05 | 2018-02-13 | 中国科学院工程热物理研究所 | Heat exchanger plates with streamlined rib structure and include its printed circuit sheet heat exchanger |
-
2018
- 2018-06-08 CN CN201810589823.0A patent/CN108548436A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS625096A (en) * | 1985-06-28 | 1987-01-12 | Nippon Denso Co Ltd | Lamination type heat exchanger |
| CN101100951A (en) * | 2007-07-13 | 2008-01-09 | 北京航空航天大学 | Gradually widened slot staggered rib passage suitable for internal cooling member as turbine blade |
| CN104296566A (en) * | 2013-07-16 | 2015-01-21 | 无锡协丰节能技术有限公司 | Plate-fin heat exchanger |
| CN104215103A (en) * | 2014-09-24 | 2014-12-17 | 中科苏派能源科技靖江有限公司 | Ceramic heat exchange plate and ceramic heat exchange core for assembling same |
| CN106705713A (en) * | 2016-12-09 | 2017-05-24 | 厦门大学 | Micro-channel heat exchanger with multiple flow path interconnection structures and method for manufacturing micro-channel heat exchanger |
| CN107687780A (en) * | 2017-08-05 | 2018-02-13 | 中国科学院工程热物理研究所 | Heat exchanger plates with streamlined rib structure and include its printed circuit sheet heat exchanger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297320A (en) * | 2018-10-10 | 2019-02-01 | 中国科学院上海技术物理研究所 | A kind of lattice structure condenser manufactured using 3D printing technique |
| CN115791244A (en) * | 2023-02-06 | 2023-03-14 | 中国核动力研究设计院 | Modular microchannel compact heat exchange experiment body, method, equipment and medium |
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