CN211190236U - Micro-channel device for generating uniform liquid drops - Google Patents
Micro-channel device for generating uniform liquid drops Download PDFInfo
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- CN211190236U CN211190236U CN201921915292.6U CN201921915292U CN211190236U CN 211190236 U CN211190236 U CN 211190236U CN 201921915292 U CN201921915292 U CN 201921915292U CN 211190236 U CN211190236 U CN 211190236U
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Abstract
The utility model belongs to the micro-fluidic field for make even liquid drop. The whole device is in a T-shaped structure and consists of a first inlet, a second inlet, a semicircular stop block, a liquid drop generating port and an outlet. The radius of the semicircular stops and the width of the drop generating port can be varied according to the size requirements of the desired drop. The utility model has the advantages of simple structure is compact, and whole size is less, easily processing, can be a large amount of even liquid drops of formation fast.
Description
Technical Field
The utility model relates to a micro-fluidic field mainly relates to a generate microchannel apparatus of even liquid drop.
Background
The microfluidic chip technology is a multidisciplinary cross-research field which is rapidly developed in recent years, and has the remarkable advantages of short reaction or analysis time and the like. The droplet microfluidic technology is one of important branches in numerous applications of microfluidic chip technology, is a brand-new technology for operating micro-volume droplets developed based on microfluidic chips, and can realize stable generation, surface treatment, cracking, fusion, multilayer droplet preparation and the like of the micro-droplets.
The existing liquid drop generating method mainly applies a certain pressure to liquid drops to enable the liquid drops to be sprayed out from a nozzle to form jet flow, certain disturbance of frequency is applied to the jet flow, and the jet flow is dispersed into continuous liquid drops with consistent size and certain space distance under the action of surface tension and disturbance. But the stability of the jet, the stability of the disturbance and the matching of the disturbance to the pressure are difficult to control. The other method is to introduce the liquid drop into a uniform liquid drop generating device to fill the whole space, maintain a certain pressure, generate micro displacement through a transducer, transmit the displacement to the liquid in a crucible, extrude the liquid from a nozzle at the bottom of the crucible, form a liquid drop from the extruded liquid each time, and control the generation of the displacement to realize the control of the liquid drop generation. However, the uniform droplet generation device is generally complex, some key parameters are directly controlled by a computer, and the real-time requirement on information processed by the computer is high.
The utility model discloses a T type microchannel structure changes access way's structure, and simple structure is compact, and whole size is less, easily processing, the even liquid drop of a large amount of formation fast.
Disclosure of Invention
An object of the utility model is to provide a simple structure, the microchannel device of the even liquid drop of a large amount of formation can be quick. By optimizing the inlet channel structure, the efficiency of droplet generation is improved.
The utility model provides a technical scheme is: a microchannel device for generating uniform liquid drops specifically comprises a first inlet (1), a semicircular stop block (2), a liquid drop generating port (3), a second inlet (4) and an outlet (5). Wherein the width ratio of the first inlet (1) to the second inlet (4) is 1:1, both are 0.1mm, the included angle between the inclined edge of the droplet generation port (3) and the second inlet (4) is 45 degrees, the width of the port is 0.02mm, a semicircular stop block is arranged between the first inlet (1) and the droplet generation port (3), and the radius is 0.07 mm. The first inlet (1) is a discrete phase inlet, the second inlet (4) is a continuous phase inlet, the two inlets are perpendicular to each other, and the whole micro-channel structure is in a T shape. The utility model has the advantages of reach the purpose of stabilizing the even liquid drop of efficient production through the structure that changes access way, and the structure adds singly, easily processing.
Drawings
FIG. 1 is a schematic two-dimensional structure of a microchannel device for generating uniform droplets, in which: 1 is a first inlet, 2 is a semicircular block, 3 is a droplet generation port, 4 is a second inlet, 5 is an outlet, and the arrow indicates the flow direction of the fluid.
FIG. 2 is a schematic view of droplet generation for a microchannel apparatus for generating uniform droplets.
FIG. 3 is a velocity field diagram of a microchannel apparatus for generating uniform droplets, where the thin lines are velocity streamlines.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
A microchannel device for generating uniform liquid drops specifically comprises a first inlet (1), a semicircular stop block (2), a liquid drop generating port (3), a second inlet (4) and an outlet (5).
Specifically, the discrete phase fluid enters from a first inlet (1), the continuous phase fluid enters from a second inlet (4), and the densities of the discrete phase fluid and the continuous phase fluid are both 1000kg/m3。
Specifically, the radius of the semicircular block is 0.07mm, the width of the droplet generation port is 0.02mm, and the specific size can be adjusted appropriately according to the size requirement of the generated droplet.
Specifically, the continuous phase fluid enters from the second inlet (4), and the dispersed phase fluid enters from the first inlet (1) after the fluid flow is stable.
Claims (4)
1. A microchannel device for generating uniform liquid drops is composed of a first inlet (1), a semicircular stop block (2), a liquid drop generating port (3), a second inlet (4) and an outlet (5), and is characterized in that the whole device structure is in a T-shaped structure, continuous phase fluid enters from the second inlet (4), discrete phase fluid enters from the first inlet (1), and liquid drops are generated and then flow out from the outlet (5).
2. A microchannel device for generating uniform droplets according to claim 1, wherein the first inlet (1) is at an angle of 90 degrees to the second inlet (4) and the inclined side of the droplet generation port (3) is at an angle of 45 degrees to the second inlet (4).
3. A microchannel device for generating uniform droplets according to claim 1, wherein the width ratio of the first inlet (1) to the second inlet (4) is 1: 1.
4. A microchannel device for generating uniform droplets of liquid as claimed in claim 1 wherein there is a semicircular stop with a radius of 0.07mm intermediate the first inlet (1) and the droplet generating port (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921915292.6U CN211190236U (en) | 2019-11-08 | 2019-11-08 | Micro-channel device for generating uniform liquid drops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921915292.6U CN211190236U (en) | 2019-11-08 | 2019-11-08 | Micro-channel device for generating uniform liquid drops |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211190236U true CN211190236U (en) | 2020-08-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921915292.6U Active CN211190236U (en) | 2019-11-08 | 2019-11-08 | Micro-channel device for generating uniform liquid drops |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211190236U (en) |
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2019
- 2019-11-08 CN CN201921915292.6U patent/CN211190236U/en active Active
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