CN108104078A - It is a kind of based on wedge shape the tree-like spontaneous orientation transport of shape to be divided to collect flow passage structure - Google Patents
It is a kind of based on wedge shape the tree-like spontaneous orientation transport of shape to be divided to collect flow passage structure Download PDFInfo
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- CN108104078A CN108104078A CN201711365351.2A CN201711365351A CN108104078A CN 108104078 A CN108104078 A CN 108104078A CN 201711365351 A CN201711365351 A CN 201711365351A CN 108104078 A CN108104078 A CN 108104078A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B13/00—Irrigation ditches, i.e. gravity flow, open channel water distribution systems
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B13/00—Irrigation ditches, i.e. gravity flow, open channel water distribution systems
- E02B13/02—Closures for irrigation conduits
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Abstract
It the invention belongs to areal, fluid runner design field, and discloses a kind of tree-like spontaneous orientation transport based on wedge-shaped point shape and collects flow passage structure, there is multistage wedge-shaped limb, the bottom equivalent length of the longitudinal section of i-stage wedge shape limb is Di, gradient angle be, whole height LiAnd upper bottom length is Di', and bottom length is less than bottom equivalent length, gradient angle thereonAngle for two bevel edges being connected with upper bottom；The bottom of j-th stage wedge shape limb is attached on the bevel edge of the wedge-shaped limb of 1 grade of jth, and the relation of the upper bottom length of the wedge-shaped limb of 1 grade of bottom equivalent length and jth of j-th stage wedge shape limb is as follows：Dj≤Dj′‑1, j-th stage wedge shape limb and the wedge-shaped limb centerlines of 1 grade of jth are.The present invention has gradient-structure using wedge-shaped elementary cell, fluid is made to generate laplace pressure on runner poor, spontaneous driving fluid orients transport on runner, and transports and collect along successional fractal structure, can improve the orientation transport collection efficiency of fluid and realize large-area manufacturing.
Description
Technical field
The invention belongs to areal, fluid runner design fields, and runner is collected more particularly, to a kind of spontaneous orientation transport
Structure.
Background technology
In recent years, arid and semi-arid lands's water resource lacks getting worse.However, some biological such as beetles, celestial being
The palm but can adapt to severe living environment, main reason is that they possess efficient fluid acquisition capability, so as to meet
Daily water demand.People are designed and are prepared for a series of steam by this inspiration and collect biomimetic features, are mainly had：The parent of imitative beetle
Hydrophobic alternate planar periodic structure；The three-dimensional tapering gradient structure of imitative cactus；The three-dimensional spindle structure of imitative spider silk.
Three's is described in detail as follows：
First, the hydrophobe interphase cycle planar structure of beetle is imitated, primary structure is with the graphic arrays such as circular, square
The water in air is collected as hydrophilic region, the region of figure ground is hydrophobic region, so that the water being collected into is by weight
The collection of dropping of drop is completed in the effect of power.Major defect is that surface has more residual drop, adds condensation thermal resistance,
It is unfavorable for the Drop Condensation and fluid collection of continuation, and the hydrophilic region of array adds the adhesion strength to water so that liquid
Drop can not drop rapidly.Since the runner that hydrophobic region is provided can not realize the displacement of drop, collection efficiency compares
It is low；
Second, the three-dimensional gradient structure of cactus is imitated, primary structure is that the elementary cell using cone as array structure is used
It can cause in the drop in the collection of fluid, cone surface under the collective effect of gravity and Laplce's gradient force in cone
Drop spontaneous metastasis carry out the collection of water to cone bottom, but the drop for moving cone bottom can not continue displacement, therefore collect
Drop also has larger drop residual, the processing technology of this male-tapered is very complicated there are larger difficulty；
3rd, the spindle three-dimensional structure of spider silk is imitated, primary structure is the periodic structure that spindle is formant
As the region for collecting water, the water at spindle both ends is under the action of surface laplacian gradient force by spontaneous along spindle
Center is moved, and when drop is sufficiently large, drop overcomes adhesion strength and drops under gravity, so as to complete the receipts of fluid
Collection.It is compared to for two dimensional surface runner, major defect is that processing preparation difficulty is big, and structural strength is low.
The content of the invention
For the disadvantages described above or Improvement requirement of the prior art, the present invention provides it is a kind of based on wedge shape divide shape it is tree-like from
Flow passage structure is collected in hair orientation transport, can greatly improve the orientation transport collection efficiency of fluid.
To achieve the above object, it is proposed, according to the invention, provide a kind of tree-like spontaneous orientation transport based on wedge-shaped point shape and receive
Mass flow pathway structure, which is characterized in that it has multistage wedge-shaped limb, and the vertical of flow passage structure is collected in the tree-like spontaneous orientation transport
On section, for every grade of wedge-shaped limb, the bottom equivalent length of the longitudinal section of i-stage wedge shape limb is Di, gradient angle beWhole height is LiAnd upper bottom length is Di', and bottom length is less than bottom equivalent length thereon, wherein, gradient angleFor
The angle for two bevel edges being connected with upper bottom, i=1,2...n, n are total series of wedge-shaped limb, and the 1st grade of wedge-shaped limb is as major branch
Dry doubling and thereon bottom are parallel with bottom, the whole height L of the 1st grade of wedge-shaped limb1For the distance between upper bottom and bottom；
In addition, the bottom of j-th stage wedge shape limb is attached on the bevel edge of the wedge-shaped limb of -1 grade of jth, under j-th stage wedge shape limb
The relation of the upper bottom length of -1 grade of wedge-shaped limb of bottom equivalent length and jth is as follows：Dj≤D′j-1, to ensure fluid from j-th stage court
- 1 grade of jth flows successively, wherein j=2,3...n, and the bottom equivalent length of j-th stage wedge shape limb refers to, from j-th stage wedge shape branch
The endpoint away from upper bottom of every dry bevel edge draws the straight line parallel with upper bottom, every straight line respectively with another bevel edge phase
It hands over, this two straight lines form two lines section between this two bevel edges, and the length of longer line segment is then under j-th stage wedge shape limb
Bottom equivalent length, in addition, the whole height L of j-th stage wedge shape limbjRefer to：The perpendicular bisector at the upper bottom of j-th stage wedge shape limb
With the distance of the intersection point of the perpendicular bisector at the upper bottom of the wedge-shaped limb of -1 grade of jth to the upper bottom of j-th stage wedge shape limb.
Preferably, the upper bottom of -1 grade of wedge-shaped limb of the perpendicular bisector at the upper bottom of j-th stage wedge shape limb and jth is vertical flat
The angle of separated time isRequirement movement velocity of the angle fluid on runner determines that the angle is bigger, fluid transport
Speed is faster, per the whole height L of level-one wedge shape limbiIt is determined by distance of the fluid in rank requirement movement.
Preferably, the flow summation for the fluid that all j-th stage wedge shape limbs can accommodate is Qj, all -1 grade of wedge shapes of jth
The flow summation Q for the fluid that limb can accommodatej-1, and Qj≤Qj-1。
For the j-th stage wedge shape limb being attached on the same wedge-shaped limb of -1 grade of jth, two neighboring jth
The spacing T of the wedge-shaped limb of grade(j-1)jIt is determined according to the optimal size for collecting drop.
In general, by the above technical scheme conceived by the present invention compared with prior art, it can obtain down and show
Beneficial effect：
(1) present invention constructs successional shim gradient so that fluid generates continuous laplace pressure on runner
Difference and surface energy differential driving force so that spontaneous driving orientation transport and collection of the fluid on long range runner substantially increase
The speed of fluid orientation transport.
(2) multistage cuniform channel is devised using the self-similar principle of fractals, accurately controls condenser zone institute energy
The maximum droplet size of generation, the runner for realizing large area while, accelerate the directional collecting of condenser zone, substantially increase
Condensation efficiency.
(3) present invention is carried out bionical using vein, builds multistage cuniform channel structure using Fractal so that be covered with whole
The cuniform channel on a surface can realize all drops all displacements on cryosurface to runner, and be transported along runner
It is collected on same point, greatly reduces the drop residual of cryosurface, collection efficiency is thus greatly improved.
Description of the drawings
Fig. 1 is two fraction shape cuniform channel structure size schematic diagrames in the embodiment of the present invention；
Fig. 2 is two fraction shape cuniform channel fluid collection schematic diagrames in the embodiment of the present invention；
Fig. 3 is three fraction shape cuniform channel structure size schematic diagrames in the embodiment of the present invention；
Fig. 4 is three fraction shape cuniform channel fluid collection schematic diagrames in the embodiment of the present invention；
Fig. 5 is four fraction shape cuniform channel structure size schematic diagrames in the embodiment of the present invention；
Fig. 6 is four fraction shape cuniform channel fluid collection schematic diagrames in the embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Conflict is not formed each other to can be combined with each other.
It is a kind of based on wedge shape the tree-like spontaneous orientation transport of shape to be divided to collect flow passage structure with reference to Fig. 1~Fig. 6, have more
The wedge-shaped limb of grade is collected in the tree-like spontaneous orientation transport on the longitudinal section of flow passage structure, for every grade of wedge-shaped limb, the
The bottom equivalent length of the longitudinal section of i grades of wedge-shaped limbs is Di, gradient angle beWhole height is LiAnd upper bottom length is Di',
And bottom length is less than bottom equivalent length thereon, wherein, gradient angleAngle for two bevel edges being connected with upper bottom, i=1,
2...n, n is total series of wedge-shaped limb, and bottom is parallel with bottom as major branch dry doubling and thereon for the 1st grade of wedge-shaped limb, the 1st grade
The whole height L of wedge-shaped limb1For the distance between upper bottom and bottom；
In addition, the bottom of j-th stage wedge shape limb is attached on the bevel edge of the wedge-shaped limb of -1 grade of jth, under j-th stage wedge shape limb
The relation of the upper bottom length of -1 grade of wedge-shaped limb of bottom equivalent length and jth is as follows：Dj≤D′j-1, to ensure fluid from j-th stage court
- 1 grade of jth flows successively, wherein j=2,3...n, and the bottom equivalent length of j-th stage wedge shape limb refers to, from j-th stage wedge shape branch
The endpoint away from upper bottom of every dry bevel edge draws the straight line parallel with upper bottom, every straight line respectively with another bevel edge phase
It hands over, this two straight lines form two lines section between this two bevel edges, and the length of longer line segment is then under j-th stage wedge shape limb
Bottom equivalent length, in addition, the whole height L of j-th stage wedge shape limbjRefer to：The perpendicular bisector at the upper bottom of j-th stage wedge shape limb
With the distance of the intersection point of the perpendicular bisector at the upper bottom of the wedge-shaped limb of -1 grade of jth to the upper bottom of j-th stage wedge shape limb.
Further, the upper bottom of -1 grade of wedge-shaped limb of the perpendicular bisector at the upper bottom of j-th stage wedge shape limb and jth is vertical flat
The angle of separated time isRequirement movement velocity of the angle fluid on runner determines that the angle is bigger, fluid transport
Speed is faster, per the whole height L of level-one wedge shape limbiIt is determined by distance of the fluid in rank requirement movement.
Further, the flow summation for the fluid that all j-th stage wedge shape limbs can accommodate is Qj, all -1 grade of wedge shapes of jth
The flow summation Q for the fluid that limb can accommodatej-1, and Qj≤Qj-1。
Further, for the j-th stage wedge shape limb being attached on the same wedge-shaped limb of -1 grade of jth, two neighboring jth
The spacing T of the wedge-shaped limb of grade(j-1)jIt is determined according to the optimal size for collecting drop.
The specific design method of flow passage structure is as follows：
(1) the base square D for determining the wedge-shaped limb of level-one (fractal series i=1, main lobe arteries and veins) is designed1, wedge-shaped gradient angle
ForEntire length is L1, it can thus be concluded that the size at the upper bottom of wedge-shaped limb is D1', runner figure is denoted as P1；Figure bottom is minimum
Dimension D1' need to codetermine with used technology according to runner design,It is determined by requirement movement velocity of the fluid on runner
It is fixed,Bigger, the speed of fluid transport is faster, L1It is determined by distance of the fluid in rank requirement movement, D1It can be by D1',With
L1It is calculated；
(2) since fluid needs to transport to designated position from the spontaneous orientation in a certain position, according to the continuity of gradient force difference,
Design determines the base square D of the wedge-shaped limb of two level (fractal series i=2, secondary vein)2(meet D2≤D′1), wedge-shaped gradient
Angle isEntire length is L2, it can thus be concluded that the size at the upper bottom of two level wedge shape limb is D2', firsts and seconds wedge shape limb
The angle of the perpendicular bisector at upper bottom is φ12, according to the optimal size for collecting drop as array week on level-one wedge shape limb
Phase is along level-one wedge shape limb the right and left or unilateral edge array arrangement level-one wedge shape limb P1, so as to increase transport water
Runner quantity, runner figure are denoted as P2, while the runner amount summation on the runner of two level wedge shape is no more than level-one runner institute energy
The runner amount of receiving, that is, meet Murrary laws：
Wherein, njFor the sum of j-th stage runner, α is determined according to flow regime, is met here
Full-size D in bottom on figure2The D ' to be gone to the bottom according to the other runner of upper level1It determines, in order to enable the continuity of gradient force
Property is, it is necessary to meet D2≤D′1, enable to drop continued on when runner rank is converted the runner movement with gradient without
Trapped fluids are generated, in level-one wedge shape limb edge array arrangement two level wedge shape limb P1Period distances according to optimal collection liquid
The size of drop determines that the angle of the perpendicular bisector at the upper bottom of two level runner and level-one runner isWhenFor runner upper surface
During the supplementary angle of angle with horizontal plane, efficiency highest that fluid is collected along runner；
In the period distances T of level-one wedge shape limb edge array arrangement two level wedge shape limb12According to optimal collection drop
Size determines, the period distances T of subsequent other grades of period distances such as two level and three-level23, three-level and level Four period distances
T34It is definite also identical with this.
(3) design method of (2) is repeated, obtains the bottom ruler of the wedge-shaped limb of three-level (fractal series i=3, three-level vein)
Very little D3(meet D3≤D′2), wedge-shaped gradient angle isEntire length is L3, it can thus be concluded that the size at the upper bottom of wedge-shaped limb is
D′3, the angle of two level and three-level wedge shape limb is φ23, similarly in order to increase the runner quantity of transport water, in three-level wedge shape limb
The right and left array arrangement runner, runner figure are denoted as P3, equally meet Murrary laws,
(4) repeat (3) design method, and so on can obtain n grades of runner figure Pn, equally meet Murrary and determine
Rule, fractal series n can according to actual needs runner size determine.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., should all include
Within protection scope of the present invention.
Claims (4)
1. a kind of divide the tree-like spontaneous orientation transport of shape to collect flow passage structure based on wedge shape, which is characterized in that it has multistage wedge
Shape limb is collected in the tree-like spontaneous orientation transport on the longitudinal section of flow passage structure, for every grade of wedge-shaped limb, i-stage
The bottom equivalent length of the longitudinal section of wedge-shaped limb is Di, gradient angle beWhole height is LiAnd upper bottom length is Di', and
Bottom length is less than bottom equivalent length thereon, wherein, gradient angleAngle for two bevel edges being connected with upper bottom, i=1,
2...n, n is total series of wedge-shaped limb, and bottom is parallel with bottom as major branch dry doubling and thereon for the 1st grade of wedge-shaped limb, the 1st grade
The whole height L of wedge-shaped limb1For the vertical range between upper bottom and bottom；
In addition, the bottom of j-th stage wedge shape limb is attached on the bevel edge of the wedge-shaped limb of -1 grade of jth, bottom of j-th stage wedge shape limb etc.
The relation for imitating the upper bottom length of -1 grade of wedge-shaped limb of length and jth is as follows：Dj≤D′j-1, to ensure fluid from j-th stage towards jth -1
Grade flows successively, and wherein j=2,3...n, the bottom equivalent length of j-th stage wedge shape limb refer to, from the every of j-th stage wedge shape limb
The endpoint away from upper bottom of bevel edge draws the straight line parallel with upper bottom, and every straight line intersects respectively with another bevel edge, this two
Straight line forms two lines section between this two bevel edges, and the length of longer line segment is then equivalent for the bottom of j-th stage wedge shape limb
Length, in addition, the whole height L of j-th stage wedge shape limbjRefer to：The perpendicular bisector and jth at the upper bottom of j-th stage wedge shape limb-
The intersection point of the perpendicular bisector at the upper bottom of 1 grade of wedge-shaped limb is to the distance at the upper bottom of j-th stage wedge shape limb.
2. a kind of acquisition that flow passage structure is collected based on the wedge-shaped tree-like spontaneous orientation transport for dividing shape according to claim 1
Method, which is characterized in that the upper bottom of the perpendicular bisector at the upper bottom of j-th stage wedge shape limb and the wedge-shaped limb of -1 grade of jth it is vertical
The angle of bisector isRequirement movement velocity of the angle fluid on runner determines that the angle is bigger, fluid transport
Speed it is faster, the whole height L per level-one wedge shape limbiIt is determined by distance of the fluid in rank requirement movement.
3. a kind of tree-like spontaneous orientation transport collection flow passage structure for dividing shape based on wedge shape according to claim 1, special
Sign is that the flow summation for the fluid that all j-th stage wedge shape limbs can accommodate is Qj, all wedge-shaped limb institute energy of -1 grade of jth
The flow summation Q of the fluid of receivingj-1, and Qj≤Qj-1。
4. a kind of tree-like spontaneous orientation transport collection flow passage structure for dividing shape based on wedge shape according to claim 1, special
Sign is, for the j-th stage wedge shape limb being attached on the same wedge-shaped limb of -1 grade of jth, two neighboring j-th stage wedge shape branch
Dry spacing T(j-1)jIt is determined according to the optimal size for collecting drop.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108927233A (en) * | 2018-09-06 | 2018-12-04 | 广州大学 | A kind of no external force controls the microfluidic chip structure and preparation method thereof of unidirectional liquid transporting |
| CN109364586A (en) * | 2018-08-31 | 2019-02-22 | 广东工业大学 | A kind of steam collection device and preparation method thereof with very low power runner |
| CN111252227A (en) * | 2020-02-10 | 2020-06-09 | 大连理工大学 | Water droplet collection type unpowered self-driven miniature ship |
| CN111301651A (en) * | 2020-02-10 | 2020-06-19 | 大连理工大学 | Continuous self-driven miniature ship |
| CN113877234A (en) * | 2021-10-12 | 2022-01-04 | 上海交通大学 | Low-pressure microgravity water vapor enhanced condensation and collection device |
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| CN1158650A (en) * | 1994-09-23 | 1997-09-03 | 帕·卡尔·克鲁姆斯维奇 | A method and a device for recovering water from a humid atmosphere |
| JP2005229922A (en) * | 2004-02-20 | 2005-09-02 | Shinichiro Hayashi | Greening storage infiltration tank |
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2017
- 2017-12-18 CN CN201711365351.2A patent/CN108104078B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158650A (en) * | 1994-09-23 | 1997-09-03 | 帕·卡尔·克鲁姆斯维奇 | A method and a device for recovering water from a humid atmosphere |
| JP2005229922A (en) * | 2004-02-20 | 2005-09-02 | Shinichiro Hayashi | Greening storage infiltration tank |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109364586A (en) * | 2018-08-31 | 2019-02-22 | 广东工业大学 | A kind of steam collection device and preparation method thereof with very low power runner |
| CN108927233A (en) * | 2018-09-06 | 2018-12-04 | 广州大学 | A kind of no external force controls the microfluidic chip structure and preparation method thereof of unidirectional liquid transporting |
| CN111252227A (en) * | 2020-02-10 | 2020-06-09 | 大连理工大学 | Water droplet collection type unpowered self-driven miniature ship |
| CN111301651A (en) * | 2020-02-10 | 2020-06-19 | 大连理工大学 | Continuous self-driven miniature ship |
| CN111252227B (en) * | 2020-02-10 | 2021-04-20 | 大连理工大学 | Water droplet collection type unpowered self-driven miniature ship |
| CN111301651B (en) * | 2020-02-10 | 2021-08-10 | 大连理工大学 | Continuous self-driven miniature ship |
| CN113877234A (en) * | 2021-10-12 | 2022-01-04 | 上海交通大学 | Low-pressure microgravity water vapor enhanced condensation and collection device |
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