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 PDF

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Publication number
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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China
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runner
heat exchanger
exchanger plates
branch flow
flow passage
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CN201710498151.8A
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CN107255425B (en
Inventor
赵振兴
刘洲洋
林原胜
吴君
柳勇
白凡
劳星胜
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719th Research Institute of CSIC
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719th Research Institute of CSIC
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations

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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 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

A kind of heat exchanger plates, processing method and heat exchanger
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.
CN201710498151.8A 2017-06-27 2017-06-27 Heat exchange plate, machining method and heat exchanger Active CN107255425B (en)

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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
CN109443056A (en) * 2018-09-14 2019-03-08 中国科学院工程热物理研究所 Two-sided staggeredly printed circuit board heat exchanger plates and heat exchanger
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
CN111351378A (en) * 2018-12-21 2020-06-30 赛峰航空助推器股份有限公司 Fuel oil heat exchanger
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
WO2023115230A1 (en) * 2021-12-22 2023-06-29 Universidad Técnica Federico Santa María Plate heat exchanger based on the hilbert curve
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CN111351378A (en) * 2018-12-21 2020-06-30 赛峰航空助推器股份有限公司 Fuel oil heat exchanger
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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