CN107255425A - A kind of heat exchanger plates, processing method and heat exchanger - Google Patents
A kind of heat exchanger plates, processing method and heat exchanger Download PDFInfo
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- CN107255425A CN107255425A CN201710498151.8A CN201710498151A CN107255425A CN 107255425 A CN107255425 A CN 107255425A CN 201710498151 A CN201710498151 A CN 201710498151A CN 107255425 A CN107255425 A CN 107255425A
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- 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
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- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of heat exchanger plates, processing method and heat exchanger, it is related to field of heat exchange equipment.The first surface of heat exchanger plates is provided with two afflux grooves and flute profile runner, and two afflux grooves are located at heat exchanger plates two ends respectively, and flute profile runner includes:At least one classification runner, classification runner passes to another afflux groove by an afflux groove, and classification runner includes by least two first branch flow passages being connected between two sprues with two afflux grooves being connected respectively, two sprues;Netted runner, it is located between the first adjacent branch flow passage, and is in fluid communication with the first branch flow passage;Meanwhile, the cross-sectional area of netted runner is less than the cross-sectional area of the first branch flow passage, classification runner and netted runner formation vein shape fluid-dispensing structure.Collective effect of the invention by being classified the main driving force of runner and the capillary force of netted runner, is effectively improved even fluid distribution, increases effective heat transfer area so that the flow velocity of fluid reduces under same traffic, reduce resistance.
Description
Technical field
The present invention relates to field of heat exchange equipment, a kind of heat exchanger plates, processing method and heat exchanger are specifically related to.
Background technology
With the fast development of forth generation high-temperature reactor technology and cleaning thermoelectricity technology, matched is overcritical therewith
Fluid Brayton cycle turns into the focus studied both at home and abroad, the trend of big substituted existing steam Rankine cycle.Due to Bretton
There is height to return thermal property for circulation, and under conditions of gas-gas heat exchange, therefore supercritical fluid heat exchanger turns into power
The maximum equipment of volume in system, its volume accounts for more than the 90% of the total equipment volume of dynamical system, meanwhile, supercritical fluid heat exchange
The performance of device is significant to the integrated level of dynamical system, stability, controllability and security.
Traditional fin-tube type shell-and-tube heat exchanger is combined by heat exchanger tube and fin by brazing mode, it is adaptable to conventional
Gas or liquid working substance heat exchange, and the heat transfer requirements of the supercritical fluid media of HTHP are unsatisfactory for, easily because heat is swollen
Creep, which occurs, for swollen stress and fin causes heat exchanger internal modification to fail, and causes heat exchanger to be revealed because brazing material corrodes.
Due to the HTHP of supercritical fluid, high density, the physical characteristic of low viscosity, micro-channel heat exchanger utilizes supercritical fluid
Volume flow and the corresponding less feature of frictional resistance, can realize that heat exchange efficiency is higher, economy and security are more preferable.Example
Such as, the primary element for the printed circuit sheet heat exchanger that Heatric companies propose is that chemical etching is used on microchannel plate, plate
Form the passage of a variety of configurations, such as straight channel, chevron shaped channels and S-shaped passage, by cold and hot plate successively alternately superposition and
The heat exchanger of formation, heat exchange efficiency high the advantages of good with bearing capacity, and under equal thermal load conditions, volume ratio pipe
Shell heat exchanger reduces 85%.However, the highly compact of printed circuit board (PCB) micro-channel heat exchanger is set and microscale channel is big
Width will also result in the sharp increase of heat exchanger resistance while reducing size of heat exchanger, flow distribution is uneven, and plate local temperature is too high
Etc. realistic problem, these problems both cause compression wasted work increase, also influence the efficiency and economy of whole system.
The content of the invention
It is of the invention it is a primary object of the present invention to provide a kind of heat exchanger plates for defect present in prior art
Another object is to provide a kind of processing method and heat exchanger, passes through the main drive of the classification runner in vein shape fluid-dispensing structure
The collective effect of the capillary force of power and netted runner, can be effectively improved the uniformity of flow distribution, prevent local channel from hindering
Plug, and effective heat transfer area can be increased so that the flow velocity of the fluid working substance under same traffic reduces, and contributes to reduction to hinder
Power.
The present invention provides a kind of heat exchanger plates, and the first surface of the heat exchanger plates is provided with two afflux grooves and flute profile runner,
Two afflux grooves are located at the heat exchanger plates two ends respectively, and the flute profile runner includes:
At least one classification runner, the classification runner passes to another afflux groove by an afflux groove, described
Classification runner is included between two sprues for being connected respectively with two afflux grooves, two sprues by least two the
One branch flow passage is connected;
Netted runner, it is located between adjacent first branch flow passage, and is in fluid communication with first branch flow passage;Together
When,
The cross-sectional area of the netted runner be less than first branch flow passage cross-sectional area, the classification runner and
Netted runner formation vein shape fluid-dispensing structure.
On the basis of above-mentioned technical proposal, at least one secondary flow is additionally provided between adjacent first branch flow passage
Road, the netted passage between the secondary runner and adjacent first branch flow passage, the horizontal stroke of the secondary runner
Area of section is less than the cross-sectional area of first branch flow passage, and more than the cross-sectional area of the netted runner.
On the basis of above-mentioned technical proposal, the shape of the cross section of the classification runner, netted runner and secondary runner
It is semicircle.
On the basis of above-mentioned technical proposal, first branch flow passage diameter cube sum is equal to the sprue at least described in two
Cube of diameter.
On the basis of above-mentioned technical proposal, the diameter D of the netted runnerwFor:Dw=aDz, wherein, DzFor described
The diameter of one branch flow passage, a=1/3~1/10.
On the basis of above-mentioned technical proposal, one end away from the afflux groove of the sprue and first at least described in two
Branch flow passage formation bifurcation structure, the angular range between first branch flow passage and the sprue is 0≤α < 90.
On the basis of above-mentioned technical proposal, at least two second branch flow passages, institute are additionally provided with the middle part of first branch flow passage
State the first branch flow passage and at least two second branch flow passages formation bifurcation structure, the folder between the second branch flow passage and first branch flow passage
Angular region is 0≤α < 90.
On the basis of above-mentioned technical proposal, the second surface of the heat exchanger plates is provided with two afflux grooves and flute profile stream
There is the afflux groove on road, first surface the afflux groove on first outlet, second surface to have second outlet, described
First outlet is different with the position of the second outlet.
The present invention also provides a kind of processing method of heat exchanger plates, including:
S1. mach polishing is carried out on heat exchanger plates, to lift the finish of heat exchanger plates;
S2. classification runner is processed on heat exchanger plates by the method for chemical etching;
S3. netted runner is processed using the method for laser ablation.
The present invention also provides a kind of heat exchanger, and the heat exchanger includes multiple above-mentioned heat exchanger plates, and multiple heat exchange
Plate is stacked, and face of the side provided with another heat exchanger plates is provided with the afflux groove and flute profile runner, and phase in the heat exchanger plates
The afflux groove and flute profile runner of the adjacent heat exchanger plates are spliced to form fluid passage.
Compared with prior art, afflux groove is in fluid communication via sprue and some first branch flow passages, and the first tributary
By netted flow passage between road, vein shape fluid-dispensing structure is formed, therefore, advantages of the present invention is as follows:
(1) flow uniformity is improved:By the classification main driving force of runner in vein shape fluid-dispensing structure and netted
The collective effect of the capillary force of runner, can be effectively improved the uniformity of fluid distrbution, prevent local channel from blocking.
(2) increase effective heat transfer area, reduce flow passage resistance force of waterproof:Significantly increase circulation by being classified runner, netted runner
Total cross sectional area, is not only able to increase effective heat transfer area, and the flow velocity of the fluid working substance under same traffic is subtracted
It is small, help to reduce resistance, save power consumption, improve fluid interchange efficiency.
(3) thermal stress is reduced:Make fluid working substance distribution in heat exchanger plates bigger using netted runner, so that heat exchange
The Temperature Distribution of plate face is more uniform, can effectively reduce thermal stress caused by localized hyperthermia's degree gradient.
Brief description of the drawings
Fig. 1 is the positive MCA schematic diagram of heat exchanger plates of the embodiment of the present invention;
Fig. 2 is the partial enlarged drawing of classification runner in Fig. 1;
Fig. 3 is two embodiments of netted runner of the invention;
Fig. 4 is the MCA schematic diagram of heat exchanger plates reverse side of the embodiment of the present invention;
Fig. 5 is the structural representation of micro-channel heat exchanger of the embodiment of the present invention;
Fig. 6 be in Fig. 5 A to side view;
Fig. 7 be in Fig. 5 B to side view.
Reference:
1- afflux grooves, 101- first outlets, 102- second outlets, 2- classification runners, 21- sprues, the tributaries of 22- first
Road, 221- lateral extensions section, horizontal-extending section of 222-, the netted runners of 3-, 4- level runner, 5- miniature secondary runners.
Embodiment
The embodiment of the present invention is formed by machining, chemistry and laser-induced thermal etching in same heat exchanger plates front and back and included
It is classified the vein shape fluid point of runner 2, secondary runner 4 and the netted runner 3 between classification runner 2 and secondary runner 4
Distribution structure is as fluid heat transferring microchannel, for the heat exchange of fluid (such as supercritical fluid), and same heat exchanger plates front and
The vein shape heat transfer microchannel position at the back side is corresponding, and therefore, the heat transfer microchannel with vein shape fractal characteristic produces more next
More branches, not only cause heat convection area to increase considerably, and strengthen heat convection effect, and utilize the bionical knot of vein
Structure reduces the flow resistance of working medium, and on the premise of minimal energy consumption, working medium is transported to the various pieces of heat exchange plate, increases
The heat transfer property of strong heat-exchanger rig.
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
Shown in Figure 1, the embodiment of the present invention provides a kind of heat exchanger plates, and the shape of heat exchanger plates is not limited, for example can be with
For rectangle or the plate of circle, the first surface of heat exchanger plates is provided with two afflux grooves 1 and flute profile runner, and first surface can be just
Face or the back side, heat exchanger plates can also be (examples on the 3D solid of the arbitrary shape for heat exchange, at least one surface of the entity
As on outer surface) it is provided with two afflux grooves 1 and flute profile runner.Flow passage structure on heat exchanger plates front and/or the back side mainly includes
Inlet part, heat exchange area and the part of exit portion three composition, respectively two afflux grooves 1 positioned at the two ends of heat exchanger plates formed into
Oral area point and exit portion, flute profile runner formation heat exchange area.The fluid for flowing into inlet part is first split into flute profile runner,
Exit portion is flowed into after converging, heat exchanger plates are left afterwards, fluid just can enter heat transfer zone after heat exchanger plates are entered without turnover
Domain.
Flute profile runner includes at least one classification runner 2, netted runner 3 and at least one secondary runner 4.It is classified runner 2
Another afflux groove 1 is passed to by an afflux groove 1, the quantity for being classified runner 2 is determined according to the size of heat exchanger plates heat exchange area, for example
3 classification runners 2 are shown in Fig. 1.It is shown in Figure 2, each classification runner 2 include two respectively with two phases of afflux groove 1
It is connected between the sprue 21 of connection, two sprues 21 by least two first branch flow passages 22.Netted runner 3 and secondary flow
Road 4 is located between the first adjacent branch flow passage 22, and netted runner 3, secondary runner 4 and the first adjacent branch flow passage 22 flow mutually
Body is connected.
The total cross sectional area of circulation can significantly be increased by being classified runner 2, netted runner 3 and secondary runner 4, not only
Effective heat transfer area can be increased, and the flow velocity of the fluid working substance under same traffic is reduced, help to reduce runner
Resistance, saves power consumption, improves fluid interchange efficiency.
The cross-sectional area of netted runner 3 is less than the cross-sectional area of the first branch flow passage 22, the cross section face of secondary runner 4
Product is less than the cross-sectional area of the first branch flow passage 22, and more than the cross-sectional area of netted runner 3, classification runner 2, secondary runner
4 and netted runner 3 formation vein shape fluid-dispensing structure.Enter sprue 21 as the fluid stream in the afflux groove 1 of inlet part
In, it is divided at least two first branch flow passages 22, is then flowed into the afflux groove 1 as exit portion first, meanwhile, it is close
Fluid in first branch flow passage 22 of inlet part enters secondary runner 4 and netted runner 3, converges and flows into close to exit portion
In first branch flow passage 22, flowed into by sprue 21 in the afflux groove 1 as exit portion, finally leave heat exchanger plates.
Pass through the main driving force of the fluid of 21 and first branch flow passage of sprue 22 and the common work of the capillary force of netted runner 3
With, the uniformity of flow distribution can be effectively improved, prevents local channel from blocking, raising flow uniformity.
The shape for being classified the cross section of runner 2, netted runner 3 and secondary runner 4 is semicircle, all sprues 21
The center line that the semicircle center of circle is linked to be is respectively positioned on same plane, similarly for the first branch flow passage 22, netted runner 3 or secondary
Runner 4, the center line that the semicircle center of circle is linked to be is respectively positioned on same plane, can further improve the uniformity of fluid distrbution,
Prevent local channel from blocking, improve flow uniformity.
The length of sprue 21 is L1, one end of sprue 21 connects with afflux groove 1, and sprue 21 is away from afflux groove 1
One end and at least two first branch flow passages 22 formation bifurcation structure.The quantity of first branch flow passage 22 is s, and s is positive integer, s=2,3,
4 ..., the angular range between the first branch flow passage 22 and sprue 21 is 0≤α < 90, the diameter range of the first branch flow passage 22
For:500 microns -1500 microns, the diameter cube sum of the first branch flow passage of s sections 22 is equal to cube of the diameter of sprue 21, both favorably
In the distribution of fluid working substance uniform flow, it is to avoid the too high phenomenon of flow velocity occur in indivedual runners, can ensure that fluid flows through main flow again
Flow velocity is not in notable mutation when road 21 and the first branch flow passage 22, so as to reduce the generation of local resistance as far as possible.
Bifurcation structure is illustrated below:In Fig. 2, bifurcated at one end of the sprue 21 away from afflux groove 1 is 3 sections first
Runner 22, wherein 1 section of first middle branch flow passage 22 is parallel with sprue 21,2 section of first branch flow passage 22 is with appropriate angle [alpha] in addition
(0≤α < 90) extends to both sides, and the first branch flow passage 22 includes lateral extension section 221 and horizontal-extending section 222, lateral extension section
221 two ends are connected with sprue 21 and horizontal-extending section 222 respectively, and between lateral extension section 221 and sprue 21
Angular range is 0≤α < 90.The diameter of the first branch flow passage of s sections 22 can also have nuance, s sections first with identical
The diameter cube sum of runner 22 is equal to cube of the diameter of sprue 21.This bifurcation structure can reduce fluid from inlet part to
Turnover and resulting resistance in exit portion flow process, are conducive to preventing local channel from blocking, and save power consumption, improve
Fluid interchange efficiency.
Secondary runner 4 connects horizontal-extending section 222 in the first adjacent branch flow passage 22, and perpendicular to the first branch flow passage
Horizontal-extending section 222 in 22, it can further improve the uniformity of fluid distrbution, prevent local channel from blocking, improve flowing
Uniformity.
It is shown in Figure 1, runner 2, netted runner 3 and secondary at least 3 grades of runner 4 are classified, in planar fashion drawout
Come, sprue 21, the first branch flow passage 22 and the second branch flow passage 23 formation main lobe Maitong road, lead between the first adjacent branch flow passage 22
The vertical formation second order veins passage of secondary runner 4 is crossed, main lobe Maitong road is being in emanant distribution away from the side of afflux groove 1, main
Formed between vein passage and second order veins passage and netted runner 3, common structure are set in multiple polygonal regions, polygonal region
Into vein shape heat transfer path, main lobe Maitong road and second order veins passage and the ratio of whole heat exchange plate suqare can be both improved, again
Local channel can be avoided to block and cause the problem of excessive, local temperature is too high that be heated.
It is shown in Figure 3, netted runner 3 can using network of triangle structure, network of quadrilaterals structure, pentagon web frame,
Hexagon web frame, or even irregular polygon latticed structure, polygonal region chi where the length of side of polygonized structure is not more than
Very little 1/5, it is ensured that netted runner 3 has certain distribution density in whole heat exchange area.Fluid working substance is made using netted runner 3
Distribution is bigger in heat exchanger plates, so that the Temperature Distribution of heat exchange plate face is more uniform, can effectively reduce local height
Thermal stress caused by thermograde.The diameter D of netted runner 3wFor:Dw=aDz, wherein, DzFor the diameter of the first branch flow passage 22, a
=1/3~1/10.
The middle part of first branch flow passage 22 is additionally provided with least two second branch flow passages 23, the first branch flow passage 22 and at least two second
The formation bifurcation structure of runner 23, fluid working substance disperses to flow into after the second branch flow passage 23 from first from one end of the first branch flow passage 22
The other end of runner 22 converges outflow.
Shown in Figure 2, fluid flows into the first branch flow passage 22 by length L2After can continuously form bifurcation structure, i.e.,
Two branch flow passages 23.The quantity of second branch flow passage 23 is also s, and s is positive integer, s=2,3,4 ..., such as the second tributary in fig. 2
Road 23 is 2 sections, specifically, each horizontal-extending section 222 middle part is additionally provided with least two second branch flow passages 23, and fluid working substance is from water
The scattered other end flowed into after the second branch flow passage 23 from horizontal-extending section 222 in one end of flat extension 222 converges outflow.S sections
The diameter of two branch flow passages 23 can also have nuance, the diameter cube sum of at least two second branch flow passage 23 etc. with identical
In cube of the diameter of the first branch flow passage 22 before bifurcated.It can also pass through miniature secondary runner 5 between the second adjacent branch flow passage 23
Connection, miniature secondary runner 5 is vertical with the second branch flow passage 23, netted runner 3, miniature secondary runner 5 and the second adjacent tributary
Road 23 is in fluid communication with each other, and is further improved the uniformity of flow distribution, is prevented local channel from blocking, and improves flow uniformity.
Second branch flow passage 23 can continuously form similar new bifurcation structure.
Shown in Figure 1, the afflux groove 1 on the first surface of heat exchanger plates has first outlet 101, shown in Figure 4, changes
The afflux groove 1 that the second surface of hot plate is provided with two afflux grooves 1 and flute profile runner, second surface has second outlet 102,
First outlet 101 is different with the position of second outlet 102.First surface and second surface are respectively heat exchanger plates front and back,
First surface is identical with the position of flute profile runner with the afflux groove 1 on second surface, i.e. heat exchanger plates front and back heat exchange area
Veins at different levels and the position in net-veined leaf Maitong road be completely superposed.
Above-mentioned vein shape channel design is respectively present in the obverse and reverse of monolithic heat exchanger plates, can make full use of sky
Between, to realize compact and high efficient heat exchanging the purpose of heat exchanger structure.But there is following difference in obverse and reverse:(1) in order to protect
It is in countercurrent flow, intake section and exit portion and the positive inlet portion of heat exchanger plates of the back that exchanges heat that hot fluid, which is held, with cold fluid
Divide and exit portion position is opposite;Two afflux grooves 1 on heat exchanger plates front pass through first outlet 101 and the entrance of fluid working substance
Connected respectively with outlet, two on reverse side afflux groove 1 is connected respectively by second outlet 102 and the entrance and exit of heat-exchange working medium
Connect, first outlet 101 is different with the position of second outlet 102.(2) due to import and export position limitation, heat exchanger plates it is positive enter
Oral area point and exit portion position are at the left and right sides of plate, the intake section for the back that exchanges heat and the position of exit portion
In the both sides up and down of plate.
The embodiment of the present invention also provides a kind of processing method of heat exchanger plates:
S1. mach polishing is carried out on heat exchanger plates, to lift the finish of plate;
S2. classification runner 2 is processed on heat exchanger plates by the method for chemical etching;
S3. netted runner 3 is processed using the method for laser ablation.
Above-mentioned processing method also includes:
S4. Diffusion Welding is passed through after two heat exchanger plates are alignd so that classification runner 2 and netted runner 3 are combined into circle
Passage.
Specifically, first, mach polishing is carried out on individual layer heat exchanger plates, the finish of plate is lifted, so as to
Good effect is obtained when welding in the later stage;Secondly, main lobe Maitong road is processed on heat exchanger plates by the method for chemical etching
With second order veins passage, for example, sprue 21, the first branch flow passage 22 and the second branch flow passage 23 formation main lobe Maitong road, adjacent
Miniature secondary runner 5 between secondary runner 4 between first branch flow passage 22 and the second adjacent branch flow passage 23 forms secondary
Vein passage, and on the two sides of heat exchanger plates using the main lobe Maitong road and second order veins of chemical etching processing semi-circular cross-section
Passage;3rd, after the completion of main lobe Maitong road and second order veins passageway machining, using the method for laser ablation to main lobe arteries and veins on plate
The netted runner 3 existed between passage and second order veins passage is processed;Finally, after the processing for completing fluid passage, up and down
The passage for two layers of heat exchanger plates being in contact will fit like a glove, by the way that by two layers of plate alignment and Diffusion Welding, its final fluid leads to
Road be would be combined into as the minimum circular channel of flow resistance, and cold side channel is alternately arranged with hot-side channel, heat exchanger entirety
In countercurrent flow.
Heat exchanger plates use bilateral etched channels in addition to top layer and bottom, and heat exchanger plates between top layer and bottom
Passageway machining mode is identical with structure, can using batch modeization processing, can be effectively reduced difficulty of processing and into
This.
Shown in Figure 5, the embodiment of the present invention also provides a kind of heat exchanger, and heat exchanger includes multiple above-mentioned heat exchanger plates,
And multiple heat exchanger plates are stacked, face of the side provided with another heat exchanger plates is provided with afflux groove 1 and flute profile runner in heat exchanger plates, and
The afflux groove 1 and flute profile runner of adjacent heat exchanger plates are spliced to form fluid passage.
It is combined after multiple heat exchange plate combinations by Diffusion Welding technology of pressurizeing, forms the agent structure of heat exchanger,
The backside fluid passage of wherein the first heat exchanger plates mutually splices with the backside fluid passage of the second heat exchanger plates can be using Formation cross-section as circle
The fluid passage of shape, it is assumed that be low temperature side fluid passage, and the front of the front runner of the second heat exchanger plates and the 3rd heat exchanger plates is logical
Road splices, and forms the heat exchanger channels corresponding with another wing passage, i.e. high temperature side fluid passage.Referring to shown in Fig. 6 and Fig. 7,
Front and rear sides are respectively high temperature side entrance section and high temperature side outlet in heat exchanger main body, and two sections are identical, high
Warm fluid connects case into round entrance passage by inlet distribution, and the heat exchanger main body left and right sides exist cryogenic fluid outlet and
Outlet, it can be seen that high temperature side entrance is adjacent with low temperature side outlet, and high temperature side outlet is adjacent with low temperature side entrance.Heat exchanger work
The process of work is:Supercritical fluid connects case into each layer heat exchanger plates of heat exchanger by intake section, flow into vein passages at different levels with
Another side liquid of heat exchanger plates separately is exchanged heat, outflow heat exchanger after most connecting case through outlet afterwards.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
On the premise of the principle of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as the protection of the present invention
Within the scope of.The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (10)
1. a kind of heat exchanger plates, it is characterised in that:The first surface of the heat exchanger plates is provided with two afflux grooves (1) and flute profile stream
Road, two afflux grooves (1) are located at the heat exchanger plates two ends respectively, and the flute profile runner includes:
At least one classification runner (2), the classification runner (2) passes to another afflux groove by an afflux groove (1)
(1), the classification runner (2) includes two sprues (21) being connected respectively with two afflux grooves (1), two main flows
It is connected between road (21) by least two first branch flow passages (22);
Netted runner (3), its be located at adjacent first branch flow passage (22) between, and with the first branch flow passage (22) fluid
Connection;Meanwhile,
The cross-sectional area of the netted runner (3) is less than the cross-sectional area of first branch flow passage (22), the scalable stream
Road (2) and netted runner (3) formation vein shape fluid-dispensing structure.
2. heat exchanger plates as claimed in claim 1, it is characterised in that:Be additionally provided between adjacent first branch flow passage (22) to
A few secondary runner (4), the netted runner (3) between the secondary runner (4) and adjacent first branch flow passage (22)
It is in fluid communication, the cross-sectional area of the secondary runner (4) is less than the cross-sectional area of first branch flow passage (22), and is more than
The cross-sectional area of the netted runner (3).
3. heat exchanger plates as claimed in claim 2, it is characterised in that:The classification runner (2), netted runner (3) and secondary flow
The shape of the cross section in road (4) is semicircle.
4. heat exchanger plates as claimed in claim 3, it is characterised in that:First branch flow passage (22) diameter cube sum at least described in two
Equal to cube of the sprue (21) diameter.
5. heat exchanger plates as claimed in claim 3, it is characterised in that:The diameter D of the netted runner (3)wFor:Dw=aDz, its
In, DzFor the diameter of first branch flow passage (22), a=1/3~1/10.
6. heat exchanger plates as claimed in claim 1, it is characterised in that:The one of the remote afflux groove (1) of the sprue (21)
End and the first branch flow passage (22) formation bifurcation structure at least described in two, first branch flow passage (22) and the sprue (21) it
Between angular range be 0≤α < 90.
7. heat exchanger plates as claimed in claim 1, it is characterised in that:At least two are additionally provided with the middle part of first branch flow passage (22)
Second branch flow passage (23), first branch flow passage (22) and at least two second branch flow passages (23) formation bifurcation structure, the second tributary
Angular range between road (23) and first branch flow passage (22) is 0≤α < 90.
8. the heat exchanger plates as described in any one of claim 1 to 7, it is characterised in that:On the second surface of the heat exchanger plates (10)
Provided with two afflux grooves (1) and flute profile runner, the afflux groove (1) on first surface has first outlet (101), the second table
The afflux groove (1) on face has the position of second outlet (102), the first outlet (101) and the second outlet (102)
Put difference.
9. the processing method of the heat exchanger plates as described in claim 1-8 any one, it is characterised in that the processing method bag
Include:
S1. mach polishing is carried out on heat exchanger plates, to lift the finish of heat exchanger plates;
S2. classification runner (2) is processed on heat exchanger plates by the method for chemical etching;
S3. netted runner (3) is processed using the method for laser ablation.
10. a kind of heat exchanger, it is characterised in that:The heat exchanger includes multiple changing as described in claim 1-8 any one
Hot plate, and multiple heat exchanger plates are stacked, face of the side provided with another heat exchanger plates is provided with the collection in the heat exchanger plates
Chute (1) and flute profile runner, and the afflux groove (1) and flute profile runner of adjacent heat exchanger plates are spliced to form fluid passage.
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CN108180779A (en) * | 2017-12-29 | 2018-06-19 | 中国科学院工程热物理研究所 | Structure at a kind of printed circuit board heat exchanger entrance shunting |
CN108339504A (en) * | 2018-03-12 | 2018-07-31 | 宋梓钰 | Micro-structured reactor |
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CN111189339A (en) * | 2020-01-22 | 2020-05-22 | 航天海鹰(哈尔滨)钛业有限公司 | Spliced micro-channel heat exchanger |
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CN111189339A (en) * | 2020-01-22 | 2020-05-22 | 航天海鹰(哈尔滨)钛业有限公司 | Spliced micro-channel heat exchanger |
WO2023115230A1 (en) * | 2021-12-22 | 2023-06-29 | Universidad Técnica Federico Santa María | Plate heat exchanger based on the hilbert curve |
WO2023246028A1 (en) * | 2022-06-23 | 2023-12-28 | 西安热工研究院有限公司 | Heat exchange plate having bionic leaf vein flow channel structure and heat exchanger having heat exchange plate |
CN115325717A (en) * | 2022-10-14 | 2022-11-11 | 中国核动力研究设计院 | Heat exchange device and Brayton cycle system |
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