CN208287933U - A kind of deflation of 3-D type declines mixer - Google Patents
A kind of deflation of 3-D type declines mixer Download PDFInfo
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- CN208287933U CN208287933U CN201820341915.2U CN201820341915U CN208287933U CN 208287933 U CN208287933 U CN 208287933U CN 201820341915 U CN201820341915 U CN 201820341915U CN 208287933 U CN208287933 U CN 208287933U
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- mixer
- declines
- exit passageway
- sectional dimension
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Abstract
The utility model discloses a kind of 3-D types to tighten the mixer that declines, it is whole T-shaped, including symmetrically arranged two entrances channel, vertically the exit passageway being connected with the meet in two entrances channel, it is provided with the shrink tunnel that sectional dimension is less than exit passageway between the exit passageway and the meet, the slot element that sectional dimension is less than access road is provided between the two entrances channel and the meet.The utility model can make two kinds of fluids that strong collision occur after through access road, increase the contact area of fluid and generates vortex, vortex passes through shrink tunnel, the disturbance of vortex increases, after leaving shrink tunnel, due to boundary layer separation and barometric gradient, fluid turbulent intensity is further increased, and mixed effect is greatly improved.
Description
Technical field
The utility model relates to micro-system fields more particularly to a kind of 3-D type to tighten the mixer that declines.
Background technique
In recent years, microfluidic system is concerned since it is widely applied, including sample preparation and analysis, medicine
Object transmitting, chemistry and bioanalysis etc., it is while reducing the consumption and experimental analysis cost of valuable biochemical reagents, moreover it is possible to drop
The low profession to analysis personnel requires, and can also effectively improve experimental analysis speed, facilitates assay laboratory and finally steps
To " individualized " and " household ", therefore there are wide applicability and application prospect.
Micro-mixer can realize the fluid mixing of sample, be a pith in these applications.The knot of micron level
Structure results in the surface area of inside reactor fluid and the ratio of volume and increased dramatically, and the influence of surface force and viscous force accounts for leading
The effect of status, inertia force greatly reduces, and fluid is made to show the spy that laminar flow effect, diffusion and heat transfer etc. are different from macrofluid
Different property, thus mixed process be spread by molecule based on.If mixed process depends on molecule diffusion, need quite
Long incorporation time and longer passage length, so as to cause higher pressure drop and cost.Therefore, in the case where low reynolds number
It realizes efficient and quick mixing, is urgent and in-depth study.Passive type micro-mixer is there are many structure type, wherein T
Shape micro-mixer is a kind of method the simplest for realizing that two kinds of samples are uniformly mixed, and two kinds of samples converge in the same plane
And mixing duct is flowed into, segregation phenomenon is serious in the case where low reynolds number, and mixed effect is poor.
Utility model content
In view of the above technical problems, the 3-D type that the utility model provides a kind of raising mixing efficiency tightens the mixing that declines
Device.
The utility model is achieved through the following technical solutions:
A kind of deflation of 3-D type declines mixer, whole T-shaped, including symmetrically arranged two entrances channel, vertically with
The exit passageway that the meet in two entrances channel is connected is provided with section between the exit passageway and the meet
Size is less than the shrink tunnel of exit passageway, and it is small to be provided with sectional dimension between the two entrances channel and the meet
In the slot element of access road.
Further, the horizontal plane where the center line of two access roades mutually staggers and is located at outlet and leads to
Horizontal plane two sides where road center line.
Further, horizontal plane where the center line of two access roades mutually staggers and respectively symmetrically is located at
Horizontal plane two sides where mouth channel centerline.
Further, the rectangular in cross-section of the access road, slot element, shrink tunnel and exit passageway.
Further, the sectional dimension size in the two entrances channel is identical.
Further, the sectional dimension in the two entrances channel is 90 μm of 100 μ m.
Further, the sectional dimension size of two slot elements is identical.
Further, the sectional dimension of two slot elements is 45 μm of 100 μ m.
Further, the sectional dimension of the shrink tunnel is 100 μm of 100 μ m.
Further, the sectional dimension of the exit passageway is 180 μm of 200 μ m.
The technical concept of the utility model are as follows: in low reynolds number, flowing is rendered as laminar flow, mixed process mainly according to
Rely and is spread in molecule, the mixing being unfavorable between fluid components.Enhance the method for mixing efficiency mainly by disturbance, makes laminar flow layer
Between mutually blend.Increase fluid between contact area, collision, convection current, vortex, stretch fold can enhanced dispersion, change it is micro-
The structure and geometry of mixer facilitate enhanced dispersion, are sufficiently mixed.The utility model is not using so in a plane
Vortex induce access road, generate chaotic advection, and on hybrid channel be arranged rectangle contraction structure fluid is tightened
And expansion, and then the contact area of fluid mixing is increased, effectively improve mixing intensity.
Compared with prior art, the utility model induces access road first with vortex, and two entrances channel is not at one
In plane, and object of placing obstacles on two entrances channel shrinks fluid, increases what two kinds of fluids were generated in meet
Vortex intensity, two fluids after converging collision while flowing to hybrid channel, and two fluids collides interfolded at this time,
The rectangle contraction structure of hybrid channel inlet setting, after fluid flows into contraction structure, since cross-sectional area becomes smaller, vortex is more
For confusion, after flowing out contraction structure, frictional resistance and barometric gradient lead to boundary layer separation, and flowing deviates the axis in channel, makes
Flowing generates apparent vortex, and the continuous collision interfolded between two fluids produces chaotic advection, increases connecing for fluid
Contacting surface product, and then improve the mixing intensity of fluid.
Detailed description of the invention
Fig. 1 is that the 3-D type of the utility model embodiment tightens the floor map for the mixer that declines.
Fig. 2 is that the 3-D type of the utility model embodiment tightens the schematic perspective view for the mixer that declines.
Fig. 3 is that the 3-D type of the utility model embodiment tightens the decline Reynolds number of mixer and showing for mixing intensity curve
It is intended to.
It is as shown in the figure: 1- first entrance channel；2- second entrance channel；The first slot element of 3-；The second gap 4- is single
Member；5- shrink tunnel；6- exit passageway.
Specific embodiment
With reference to the accompanying drawings and examples the utility model is made to describe in next step.
As shown in Figure 1 to Figure 2, a kind of 3-D type tightens the mixer that declines, whole T-shaped, including symmetrically arranged first enters
Mouthful channel 1 and second entrance channel 2, going out of being vertically connected with the meet in first entrance channel 1 and second entrance channel 2
Mouth channel 6 is provided with the shrink tunnel that sectional dimension is less than exit passageway 6 between the exit passageway 6 and the meet,
Sectional dimension is respectively arranged between the first entrance channel 1 and second entrance channel 2 and the meet less than entrance
First slot element 3 and the second slot element 4 in channel.
Horizontal plane phase in one feasible embodiment of the utility model, where the center line of two access roades
Mutually it is staggered and is located at the horizontal plane two sides where 6 center line of exit passageway.
In one feasible embodiment of the utility model, in the first entrance channel 1 and second entrance channel 2
Horizontal plane two sides where horizontal plane where heart line mutually staggers and respectively symmetrically is located at 6 center line of exit passageway.
In one feasible embodiment of the utility model, the first entrance channel 1 and second entrance channel
2, the rectangular in cross-section of the first slot element 3 and the second slot element 4, shrink tunnel 5 and exit passageway 6.
In one feasible embodiment of the utility model, section in the first entrance channel 1 and second entrance channel 2
Face size is identical, is 90 μm of 100 μ m.The sectional dimension size of first slot element 3 and the second slot element 4
It is identical, it is 45 μm of 100 μ m.The sectional dimension of the shrink tunnel 5 is 100 μm of 100 μ m, the exit passageway 6
Sectional dimension is 180 μm of 200 μ m.
A kind of 3-D type deflation mixer that declines of above-described embodiment mainly consists of three parts, and such as Fig. 1, including first enters
Mouth channel 1 and second entrance channel 2, shrink tunnel 5 and exit passageway 6.Wherein, first entrance channel 1 and second entrance channel 2
It is the channel that two kinds of fluids enter micro-mixer, is usually connected with micro-valve, Micropump etc., for the generation of induced swirl, first
Access road 1 and second entrance channel 2 are designed on a different plane, and in first entrance channel 1 and second entrance channel 2
On object of placing obstacles fluid is shunk, two fluids can be attached to vias inner walls flow forward, and two fluids is in meet
Collide interfolded, generates strong vortex, converges the two fluids after colliding while flowing to hybrid channel, logical in mixing
The rectangle shrink tunnel 5 of road inlet setting, since cross-sectional area becomes smaller, is vortexed more mixed after fluid flows into shrink tunnel 5
Disorderly, after flowing out shrink tunnel 5, frictional resistance and barometric gradient lead to boundary layer separation, and flowing deviates the axis in channel, makes to flow
Apparent vortex is generated, the continuous collision interfolded between two fluids produces chaotic advection, increases the contact surface of fluid
Product, and then improve the mixing intensity of fluid, hence it is evident that better than traditional T-type micro-mixer.
Analogue simulation, density point are carried out for two different fluids below with COMSOL Multiphysics software
Not Wei 1000kgm-3, diffusion coefficient is 10-9m2s-1.The model of mixer is three-dimensional, and method used is COMSOL
The multicomponent of Multiphysics transports, and density and viscosity coefficient changes with mixed generation, by the direction for observing speed
The flow direction for determining two fluids judges troubled water by the mass fraction of any component on pelvic outlet plane after observation mixing.
Fluid, which is not easy the main reason for mixing, under minute yardstick is that Reynolds number is too low, therefore measures the weight of micro-mixer practicability
Want standard: mixing efficiency under low flow velocity.It is micro- mixed that 3-D formula shrunk type under low flow velocity is simulated by COMSOL Multiphysics
The mixing situation of clutch proves its feasibility.
Mixing efficiency is to measure an important indicator of micro-mixer performance, usually with the concentration or matter of outlet fluid components
Score is measured to indicate.Vortex inlet channel and contracted structure make fluid generate stronger vortex, enhance chaotic advection, not only may be used
Increase mixing length with interior in a limited space, also will increase the contact area between fluid, plays positive work to promoting to mix
With.The conditions such as micro-mixer structure type, size and inlet flow rate have an impact to mixing efficiency.
To the 3-D type deflation of the utility model embodiment of a given packet size decline mixer and existing 3-D type it is micro- mixed
Clutch carry out numerical simulation, obtain the mixing efficiency of two groups of micro-mixers and the size relation curve of Reynolds number as shown in figure 3, by
It is found that the 3-D type deflation of the utility model embodiment declines, mixer mixing efficiency has greatly figure compared to existing 3-D type micro-mixer
Width is promoted.
3-D type provided by the utility model, which tightens the mixer that declines, can be such that two kinds of fluids occur by force after through access road
Strong collision increases the contact area of fluid and generates vortex, and vortex passes through shrink tunnel, and the disturbance of vortex increases, and leaves deflation
Behind channel, due to boundary layer separation and barometric gradient, fluid turbulent intensity is further increased, and mixed effect is significantly mentioned
It is high.
The above embodiments of the present invention is merely examples for clearly illustrating the present invention, and is not
Limitations of the embodiments of the present invention.For those of ordinary skill in the art, on above explained basis
On can also make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.
Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in this reality
Within novel scope of protection of the claims.
Claims (10)
- The mixer 1. a kind of deflation of 3-D type declines, it is whole T-shaped, including symmetrically arranged two entrances channel, vertically with two The exit passageway (6) that the meet of a access road is connected, it is characterised in that: the exit passageway (6) converges with described Between be provided with sectional dimension be less than exit passageway (6) shrink tunnel (5), the two entrances channel is converged with described Between be provided with sectional dimension be less than access road slot element.
- The mixer 2. 3-D type deflation according to claim 1 declines, it is characterised in that: in two access roades The horizontal plane two sides that horizontal plane where heart line is mutually staggered and is located at where exit passageway (6) center line.
- The mixer 3. 3-D type deflation according to claim 1 declines, it is characterised in that: in two access roades Horizontal plane two sides where horizontal plane where heart line mutually staggers and respectively symmetrically is located at exit passageway (6) center line.
- The mixer 4. 3-D type deflation according to claim 1 declines, it is characterised in that: the access road, gap are single The rectangular in cross-section of member, shrink tunnel and exit passageway.
- The mixer 5. 3-D type deflation according to claim 1 declines, it is characterised in that: the two entrances channel Sectional dimension size is identical.
- The mixer 6. 3-D type deflation according to claim 5 declines, it is characterised in that: the two entrances channel Sectional dimension is 90 μm of 100 μ m.
- The mixer 7. 3-D type deflation according to claim 1 declines, it is characterised in that: two slot elements Sectional dimension size is identical.
- The mixer 8. 3-D type deflation according to claim 7 declines, it is characterised in that: two slot elements Sectional dimension is 45 μm of 100 μ m.
- The mixer 9. 3-D type deflation according to claim 1 declines, it is characterised in that: the shrink tunnel (5) is cut Face is having a size of 100 μm of 100 μ m.
- The mixer 10. 3-D type deflation according to claim 1 declines, it is characterised in that: the exit passageway (6) Sectional dimension is 180 μm of 200 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820341915.2U CN208287933U (en) | 2018-03-13 | 2018-03-13 | A kind of deflation of 3-D type declines mixer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820341915.2U CN208287933U (en) | 2018-03-13 | 2018-03-13 | A kind of deflation of 3-D type declines mixer |
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| Publication Number | Publication Date |
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| CN208287933U true CN208287933U (en) | 2018-12-28 |
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| CN201820341915.2U Expired - Fee Related CN208287933U (en) | 2018-03-13 | 2018-03-13 | A kind of deflation of 3-D type declines mixer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108295751A (en) * | 2018-03-13 | 2018-07-20 | 华南理工大学 | A kind of deflation of 3-D types declines mixer |
-
2018
- 2018-03-13 CN CN201820341915.2U patent/CN208287933U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108295751A (en) * | 2018-03-13 | 2018-07-20 | 华南理工大学 | A kind of deflation of 3-D types declines mixer |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181228 Termination date: 20190313 |