CN116236808A - Fluid directional transportation channel and preparation method and application thereof - Google Patents
Fluid directional transportation channel and preparation method and application thereof Download PDFInfo
- Publication number
- CN116236808A CN116236808A CN202310115602.0A CN202310115602A CN116236808A CN 116236808 A CN116236808 A CN 116236808A CN 202310115602 A CN202310115602 A CN 202310115602A CN 116236808 A CN116236808 A CN 116236808A
- Authority
- CN
- China
- Prior art keywords
- channel
- asymmetric
- fluid
- fluid directional
- shaped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000012546 transfer Methods 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 35
- 230000008569 process Effects 0.000 abstract description 9
- 230000004907 flux Effects 0.000 description 35
- 239000000463 material Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000005660 hydrophilic surface Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000001263 FEMA 3042 Substances 0.000 description 1
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 description 1
- -1 Polydimethylsiloxane Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 description 1
- 229940033123 tannic acid Drugs 0.000 description 1
- 235000015523 tannic acid Nutrition 0.000 description 1
- 229920002258 tannic acid Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
- B01D5/009—Collecting, removing and/or treatment of the condensate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention provides a fluid directional transportation channel, a preparation method and application thereof. The fluid directional transportation channel does not need any external energy to be imported in the fluid directional transportation process, and realizes the quick, efficient and large-flux liquid transfer process.
Description
Technical Field
The invention belongs to the technical field of fluid control, and particularly relates to a fluid directional transportation channel and a preparation method and application thereof.
Background
In recent years, with the continuous development of interface science, directional fluid transport has been widely studied and applied to the fields of heat transfer, water collection, microfluidic transport and the like, and has excellent application prospects. Among these, the advantages of a surface energy driven directional fluid transport interface are mainly manifested by directional transfer of fluid without consuming any externally applied energy. While these functions have been demonstrated in the laboratory, directional fluid transport interfaces still present many challenges, such as shorter transport distances, slow fluid movement speeds, and low overall throughput in two-dimensional transport interfaces constructed from wettable patterns; the three-dimensional asymmetric channel prepared by directly carving or stamping on the metal plate greatly increases the fluid transportation distance and flux and improves the fluid transmission efficiency, but the mode has high precision requirements on a processing machine, and the processing technology is complex, high in energy consumption and long in time consumption, and is unfavorable for large-scale use. Therefore, it is necessary to develop a directional fluid transport material which is simple and convenient to prepare, low in cost, and has the functions of transporting liquid at high speed, large flux, long distance and the like.
Disclosure of Invention
In view of the above, the present invention aims to overcome the defects in the prior art, and provides a fluid directional transportation channel, and a preparation method and application thereof.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
in a first aspect, the present invention provides a fluid directional transport channel comprising a substrate having one or more asymmetric channels disposed on a surface thereof, the asymmetric channels having progressively smaller opening angles.
Preferably, the surface of the substrate is sequentially and continuously provided with a plurality of asymmetric channels, extension lines of the asymmetric channels are approximately converged at the same center point, and the V-shaped channels are encircled by taking the center point as a circle center to form a sector or a circle.
Preferably, the cross section of the asymmetric channel is V-shaped, U-shaped, Y-shaped or trapezoid.
Preferably, the upper surface and the lower surface of the substrate are each provided with a plurality of asymmetric channels in series.
Preferably, the asymmetric channels have the same length, and the opening angle variation trend of each asymmetric channel is the same.
Preferably, the asymmetric channels of the upper surface and the lower surface of the substrate are formed by folding the substrate.
Preferably, the surface of the substrate is provided with a hydrophilic layer to form a hydrophilic sheet, and the contact angle of the hydrophilic layer is smaller than 20 degrees.
Preferably, the material of the hydrophilic layer is one or more of hydrophilic silicon dioxide, tannic acid and polyvinyl alcohol.
Preferably, the substrate is made of one of aluminum, copper and iron or a metal alloy.
Preferably, the thickness of the substrate is less than 0.5mm.
Preferably, the cross section of the asymmetric channel is V-shaped, the width of the side wall of the V-shaped channel is 2-4mm, and the dimension of the largest distance between the two side walls is 0.5-3mm.
In a second aspect, the present invention also provides a method for preparing the fluid directional transportation channel, which comprises the following steps:
s1: the base plate is subjected to folding, mould pressing, milling, stamping, splicing or mould casting to obtain a prefabricated member;
s2: stretching one end of the prefabricated member and extruding the other end of the prefabricated member to form a fan-shaped structure or a circular structure, so that an asymmetric channel with gradually smaller opening angle is formed on the upper surface and/or the lower surface of the prefabricated member, and the fluid directional transportation channel is obtained.
Preferably, the substrate is boiled with deionized water and then subjected to the operation of step S1. Boiling the substrate in boiling water can form micro-nano structure on the surface of the substrate, and hydrophilic material is easy to adhere to the surface of the substrate.
Preferably, the surface of the fan-shaped structure or the circular structure formed in the step S2 is provided with a hydrophilic layer.
Preferably, the center angle of the fan-shaped structure is 60 ° -120 °.
In a third aspect, the invention also provides application of the fluid directional transportation channel in the fields of heat transfer, steam collection and micro-fluid transportation.
Compared with the prior art, the invention has the following advantages:
(1) The fluid directional transportation channel is based on an asymmetric fluid transportation channel constructed by hydrophilic materials, the influence of parameters such as surface wettability, channel depth, channel width and the like on the performance such as flow speed and flux of fluid directional transportation is studied, the parameters are further optimized, the directional transportation channel with high flux and high flow speed is obtained, and the channel structure and the preparation method of the included asymmetric channel are repeatedly optimized with the aim of low preparation difficulty and high precision.
(2) When the fluid directional transportation channel is used for fluid directional transportation, a fluid source can select small-flux liquid drops or large-flux liquid flows, and even under the condition of liquid feeding against gravity, the Laplacian pressure caused by the asymmetric fluid directional transportation channel can still directionally drive the liquid flows to be transported from a wide end to a narrow end, and finally the liquid flows are collected at the narrow end of the channel without any liquid overflow channel. The maximum flux of an asymmetric V-shaped channel of 4mm depth was tested to 1700ml/h. A 90 deg. fan-shaped fluid directional delivery channel structure may contain 20 asymmetric V-shaped channels with the narrow ends of the channels converging at the apex of the fan shape, greatly increasing the fluid delivery capacity and reducing the difficulty of fluid collection.
(3) The fluid directional transportation channel has the advantages of easily available raw materials, low preparation difficulty, simple production process and suitability for large-scale preparation. By folding the hydrophilic sheet into a fan shape, a plurality of asymmetric V-shaped channels with higher precision are skillfully constructed, and the directional transportation outlets of the V-shaped channels are concentrated at one point. The design solves the problems of insufficient transportation flux and slower flow speed of the traditional directional fluid to a certain extent, does not need any external energy to be imported in the process of directional transportation of the fluid, realizes the fast, efficient and large-flux liquid transfer process, and provides a new feasible scheme for efficient fluid transfer.
(4) The fluid directional transportation channel can be applied to the fields of heat transfer, steam collection and the like. By rapidly transporting the fluid source from the wide end to the narrow end, a rapid refreshing of the condensing surface may be achieved, improving condensing efficiency. For example, the fluid directional transportation channel is placed horizontally downwards, namely when the fluid directional transportation channel is applied to a steam collecting process moving vertically upwards, the fluid directional transportation channel has the capability of enabling steam to directly collide with a collecting surface, can directionally collect captured condensed water, prevent the captured condensed water from dripping, greatly improve the collecting efficiency, and also can realize directional transportation of liquid and recycle water.
(5) The fluid directional transportation channel can be applied to the field of micro-fluid transportation, the purpose of accurately controlling the reaction sequence can be finally achieved by controlling the opening angle of the asymmetric channel, and in addition, the fluid directional transportation channel can also achieve the purpose of accurately controlling the mixing of fluids with different proportions by controlling the flux of the asymmetric channel.
Drawings
FIG. 1 is a schematic view of a fluid directional transportation channel according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a process for preparing a fluid directional transportation channel according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a maximum throughput testing method according to an embodiment of the present invention;
FIG. 4 is a photograph showing stable directional transport of liquid at a flux of 500ml/h during P3 maximum flux test;
FIG. 5 is a photograph of a liquid transport breakthrough flux limit at a flux of 1800ml/h during the P3 maximum flux test;
FIG. 6 is a photograph of a breakthrough in liquid transport at a flux limit of 460ml/h during the P1 maximum flux test;
FIG. 7 is a photograph of a breakthrough flux limit for liquid transport at a flux of 1000ml/h during the P2 maximum flux test;
FIG. 8 is a photograph showing the breakthrough flux limit of liquid transport at a flux of 100ml/h during the maximum flux test of the two-dimensional hydrophilic-hydrophobic asymmetric pattern of comparative example 1;
fig. 9 is a photograph of the parallel channel maximum flux test procedure of comparative example 2.
Reference numerals illustrate:
1. a hydrophilic layer; 2. a substrate; 301-fluid directional transport channels; 302-orienting the dropped droplets; 303-liquid sprayed upwards.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which the inventive concepts pertain. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The invention will be described in detail with reference to examples.
Example 1 preparation of fluid Directional transport channels
As shown in fig. 1 to 2, the method for preparing the fluid directional transportation channel comprises the following steps:
(1) Three aluminum foils with the thickness of 0.05mm are selected as substrates, the substrates are placed into boiled deionized water, after the substrates are taken out, the three substrates are respectively folded in a positive and negative staggered way from one end to the other end according to the widths of 4mm, 3mm and 2mm to form prefabricated parts, one ends of the prefabricated parts are respectively stretched, the other ends of the prefabricated parts are extruded, the prefabricated parts form a fan-shaped structure, and a fluid conveying channel forms an internal tight and external loose V-shaped channel, so that the fluid directional conveying channel is obtained.
(2) The hydrophilic material is arranged on the surface of the prefabricated part to form a hydrophilic layer, the hydrophilic material can be formed by directly processing the surface of a substrate, or can be formed by pasting or coating the surface of the substrate, in the embodiment, the hydrophilic material is selected from hydrophilic silicon dioxide, and the contact angle of the hydrophilic layer is about 0 DEG after being tested;
(3) The three finally formed fluid directional transport channels are respectively P1, P2, P3, and the opening angles of the V-shaped channels in P1, P2 and P3 gradually become smaller from outside to the direction of the central point, and the dimension parameters of the V-shaped channels in P1, P2 and P3 are specifically shown in the following table:
TABLE 1 dimensional parameters of V-shaped channels
| Project | Total length (mm) | Sidewall length (mm) | Opening angle (degree) of wide end | Opening angle (degree) of narrow end |
| P1 | 6.5 | 2 | ≈145 | ≈5 |
| P2 | 6.5 | 3 | ≈145 | ≈5 |
| P3 | 6.5 | 4 | ≈145 | ≈5 |
The fluid directional transportation channels prepared by the method are respectively measured with maximum flux, as shown in fig. 3, and the specific measuring method is as follows:
the V-shaped channel is placed horizontally downward and the needle sprays liquid from the bottom up. The narrow end of the V-shaped channel is provided with a liquid collector, and the drainage capacity of the liquid collector is far greater than that of the V-shaped channel, so that experimental errors caused by blockage of the discharge outlet in the measuring process are eliminated. The limit of the V-shaped channel during transport was tested by increasing the flow of the injected liquid. Because of the restriction of the non-V-shaped channel and hydrophilic surface, the liquid will not overflow the channel at the beginning of the experiment, but will be directed to travel from the wide end to the narrow end of the channel (fig. 4), as the flow increases, when the liquid can no longer be accommodated, it will be expelled out of the channel, based on which the flux below is recorded as the maximum flux that the asymmetric channel can travel (fig. 5). When the flow rate of the liquid breaks through the flux limit (i.e., maximum flux), it overflows the channel, as shown in fig. 6 and 7. The measurement results are shown in the following table:
table 1 maximum flux measurement results for V-channel
| Project | Maximum flux (ml/h) |
| P1 | 450 |
| P2 | 900 |
| P3 | 1700 |
As can be seen from the above table, as the length of the side wall of the fluid directional transport channel increases, so does the flux of the fluid transport.
Comparative example 1
As a comparison, a hydrophilic-hydrophobic asymmetric pattern (i.e., a two-dimensional hydrophilic-hydrophobic asymmetric pattern) having the same size as the projected size of the fluid directional transportation channel having the length of the sidewall of P1 was used, i.e., the projected portion of P1 was coated with a hydrophilic coating having the same composition as the hydrophilic silica of the example, the remaining portion was coated with a hydrophobic coating having the composition of Polydimethylsiloxane (PDMS), as shown in fig. 8.
The hydrophilic-hydrophobic asymmetric pattern is placed horizontally downward, the needle sprays liquid from below to above, and a liquid collector is also placed at the wide end of the asymmetric channel. The drainage capacity of the liquid collector is far greater than that of the two-dimensional hydrophilic-hydrophobic asymmetric pattern to eliminate experimental errors caused by blockage of the discharge port during measurement. The limit of the two-dimensional hydrophilic-hydrophobic asymmetric pattern in the transportation process is tested by increasing the flow rate of the sprayed liquid continuously. Because of the limiting effect of the two-dimensional hydrophilic-hydrophobic asymmetric pattern and the hydrophilic surface, liquid does not overflow the channel at the beginning of an experiment, but is directionally transported from the wide end to the narrow end of the channel, along with the increase of flow, when the liquid can not be contained any more, the liquid is discharged out of the channel, and based on the limiting effect, the current flux is recorded as the maximum flux which can be transported by the two-dimensional hydrophilic-hydrophobic asymmetric pattern, the value is 100ml/h, and the maximum flux of the V-shaped channel at the depth of 2mm is 5 times of the hydrophilic-hydrophobic mode with the same size, so that the great advantage of the V-shaped channel in the aspect of large flux fluid transportation is shown.
Comparative example 2
The difference in fluid-carrying capacity under a large flux flow was compared using the preform having a sidewall length of 2mm after folding (i.e., parallel passage) prepared in step (2) of example 1 as a comparison with the fluid-carrying directional passage P3 after folding, as shown in fig. 9.
The parallel channel and the fluid directional transportation channel P3 are respectively placed horizontally downwards, and the needle head sprays liquid from bottom to top and makes uniform reciprocating motion in the direction vertical to the channels. During the collection process, due to the design of the asymmetric channel, the liquid continuously sprayed from the surface of the fluid directional transportation channel P3 can be directionally dredged to the narrow end of the fan shape and continuously collected, and can not dredge to the wide end or drop on the surface. In contrast, parallel channels, because they do not have asymmetric channels, do not have a directional transport of liquid but can only clog the channels, see fig. 9, and randomly drip on the channel surface. It can be seen that the directional dispersion and collection of liquid can be achieved only by the asymmetric V-shaped channel, showing the great advantage of the asymmetric V-shaped channel in terms of large flux directional dispersion of fluid.
The fluid directional transportation channel can be realized by a method of folding and compression stretching, and the V-shaped channel is triangular due to the folding, and the triangular structure can generate enough Laplacian pressure, so that the fluid can be stably positioned in the V-shaped channel without overflowing. The asymmetric design with the wide end and the narrow end also ensures that the liquid flow on each V-shaped channel can be directionally transported to the root of the fan-shaped structure and finally drops after converging.
The forming method has low preparation difficulty and high precision by folding to form the fluid directional transportation channel, and the asymmetric V-shaped channel in the fluid directional transportation channel can be formed by milling, stamping, splicing or die casting and other processes in the prior art, so long as the asymmetric V-shaped channel can be formed.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A fluid directional transport channel, characterized by: comprising a substrate with one or more asymmetric channels on the surface, the opening angle of the asymmetric channels is gradually reduced.
2. The fluid directional delivery passage as set forth in claim 1, wherein: the surface of the substrate is sequentially and continuously provided with a plurality of asymmetric channels, extension lines of the asymmetric channels are approximately converged at the same center point, and the asymmetric channels are encircled into a sector shape or a circular shape by taking the center point as the circle center.
3. The fluid directional delivery passage as set forth in claim 1, wherein: the cross section of the asymmetric channel is V-shaped, U-shaped, Y-shaped or trapezoid.
4. The fluid directional delivery passage as set forth in claim 1, wherein: the upper surface and the lower surface of the substrate are respectively provided with a plurality of asymmetric channels in sequence.
5. The fluid directional delivery passage as set forth in claim 2, wherein: the asymmetric channels have the same length, and the opening angle variation trend of each asymmetric channel is the same.
6. The fluid directional delivery passage as set forth in claim 1, wherein: the surface of the substrate is provided with a hydrophilic layer to form a hydrophilic sheet, and the contact angle of the hydrophilic layer is smaller than 20 degrees.
7. The fluid directional delivery passage as set forth in claim 1, wherein: the cross section of the asymmetric channel is V-shaped, the thickness of the substrate is smaller than 0.5mm, the width of the side wall of the V-shaped channel is 2-4mm, and the dimension of the position with the largest distance between the two side walls is 0.5-3mm.
8. A method of making a fluid directional delivery conduit as defined in any one of claims 1-7, wherein: the preparation method comprises the following steps:
s1: the base plate is subjected to folding, mould pressing, milling, stamping, splicing or mould casting to obtain a prefabricated member;
s2: stretching one end of the prefabricated member and extruding the other end of the prefabricated member to form a fan-shaped structure or a circular structure, so that an asymmetric channel with gradually smaller opening angle is formed on the upper surface and/or the lower surface of the prefabricated member, and the fluid directional transportation channel is obtained.
9. The method of preparing a fluid directional transportation channel of claim 8, wherein: and (3) boiling the substrate by deionized water, and then performing the operation of the step S1.
10. Use of the fluid directional transport channel of any one of claims 1-7 in the fields of heat transfer, vapor collection and microfluidic transport.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310115602.0A CN116236808A (en) | 2023-02-15 | 2023-02-15 | Fluid directional transportation channel and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310115602.0A CN116236808A (en) | 2023-02-15 | 2023-02-15 | Fluid directional transportation channel and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116236808A true CN116236808A (en) | 2023-06-09 |
Family
ID=86632529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310115602.0A Pending CN116236808A (en) | 2023-02-15 | 2023-02-15 | Fluid directional transportation channel and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116236808A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4252591A (en) * | 1979-05-02 | 1981-02-24 | Pall Corporation | Corrugating apparatus and process |
| CN102175088A (en) * | 2011-03-16 | 2011-09-07 | 大连理工大学 | Silica-based unequal-width microchannel flat heat pipe and manufacture method thereof |
| CN107401941A (en) * | 2017-08-28 | 2017-11-28 | 华南理工大学 | A kind of ultra-thin soaking plate structure |
-
2023
- 2023-02-15 CN CN202310115602.0A patent/CN116236808A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4252591A (en) * | 1979-05-02 | 1981-02-24 | Pall Corporation | Corrugating apparatus and process |
| CN102175088A (en) * | 2011-03-16 | 2011-09-07 | 大连理工大学 | Silica-based unequal-width microchannel flat heat pipe and manufacture method thereof |
| CN107401941A (en) * | 2017-08-28 | 2017-11-28 | 华南理工大学 | A kind of ultra-thin soaking plate structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102974255B (en) | Passive spiral micro-structural mixing unit and application thereof | |
| CN109603935B (en) | Micro-fluidic chip processing method based on plug-in capillary | |
| CN101598717A (en) | Mould the method that legal system is equipped with polydimethylsiloxanechip chip based on the liquid of hydrogel planar micro-patterning | |
| CN102512913B (en) | Liquid distributor for rotary filling bed | |
| CN116236808A (en) | Fluid directional transportation channel and preparation method and application thereof | |
| CN103933902B (en) | A kind of binary ordered colloidal crystal, metal nano array and preparation method thereof | |
| Liu et al. | Achieving ultralong directional liquid transportation spontaneously with a high velocity | |
| CN104056990A (en) | Layered fin-outlet mechanism of heat exchanger and core integrated machine set | |
| CN113198402B (en) | Multi-stage series micro-reactor and fluid mixing method | |
| CN102506523A (en) | Concurrent flow heat exchanger | |
| CN101716473B (en) | Chip-in micro-mixer and preparation method thereof | |
| CN206626991U (en) | A kind of close-coupled micro-channel heat exchanger | |
| CN112781421B (en) | Ultrathin heat pipe with bionic liquid absorption core | |
| CN214426510U (en) | Ultrathin heat pipe capable of efficiently exchanging heat | |
| CN209865335U (en) | Overflow tooth-shaped taper type pipe orifice film distributor | |
| CN203900310U (en) | Fin layering discharging mechanism of heat exchanger core integration unit | |
| CN210764308U (en) | Micro-nano particle deposition device | |
| CN110756133B (en) | Microchannel reactor for strengthening multiphase flow heat transfer in microchannel | |
| CN2537446Y (en) | High efficiency guide sieve plate tower | |
| CN210656876U (en) | Microfluidic device | |
| CN113694977A (en) | Microfluidic chip and manufacturing method thereof | |
| CN207384875U (en) | A kind of overflow triangle window nozzle filming device | |
| CN206746525U (en) | A kind of self-catalysis microreactor channel design | |
| CN112843765A (en) | Micro-scale efficient rectification separation process strengthening device and process | |
| CN219829599U (en) | Phase-change planar thermal diode based on directional liquid transportation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |