CN102553480B - Micro mixer - Google Patents
Micro mixer Download PDFInfo
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- CN102553480B CN102553480B CN201110442533.1A CN201110442533A CN102553480B CN 102553480 B CN102553480 B CN 102553480B CN 201110442533 A CN201110442533 A CN 201110442533A CN 102553480 B CN102553480 B CN 102553480B
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Abstract
The invention discloses a micro mixer with low manufacturing cost and high mixing efficiency. The micro mixer comprises a main body and a vibrating element, wherein the main body comprises a plurality of first chambers, a vibrating chamber, a mixed runner, a second chamber, a transmission runner, a plurality of lugs, a first decreasing block and a second decreasing block; fluid is accommodated in the first chamber; one end of the mixed runner is connected with the first chambers, and the other end of the mixed runner is connected with the vibrating chamber; one end of the transmission runner is connected with the vibrating chamber, and the other end of the transmission runner is connected with the second chamber; the lugs are staggered on two opposite inner walls of the mixed runner; the first decreasing block is arranged on the inner wall of the mixed runner, and the sectional area of the first decreasing block close to the vibrating chamber is smaller than the sectional area far away from the vibrating chamber; the second decreasing block is arranged on the inner wall of the transmission runner, and the sectional area of the second first decreasing block close to the second chamber is smaller than the sectional area far away from the second chamber; the vibrating element opposite to the vibrating chamber is positioned on the surface of the main body; and the vibrating element is used for receiving electronic signals to generate vibration, so that the volume of the vibrating chamber is changed, and the fluid is pumped to the second chamber from the first chambers.
Description
Technical field
The present invention relates to a kind of blender, relate in particular to a kind of micro-mixer.
Background technology
Along with the development of nanosecond science and technology, micro-electromechanical technology is widely used in a plurality of fields.At biological field, there is storing the biochip of bulk information and quick test, it can realize the functions such as sampling, transmission, screening, separation, mixing and detection.In existing design, the micro-mixer in biochip adopts passive mixing mechanism to obtain mostly, thereby it will utilize the geometry of runner in wafer to increase the object that level of disruption in flow field reaches mixing.In addition, also have and in biochip, add active element, namely adopt active mixed mechanism to obtain checking the mixing between body.Above-mentioned active or passive type all need connect micropump outward at biochip, and this micropump drives check body to flow.But the micro-mixer in these biochips in actual applications mixing efficiency is low, and complex structure, manufacturing cost is high, is unfavorable for promoting the use of.
Summary of the invention
The invention discloses the micro-mixer that a kind of low cost of manufacture and mixing efficiency are high.
Micro-mixer of the present invention comprises main body and vibrating elements, this main body comprises a plurality of the first chambers, vibration chamber, mixes runner, the second chamber, transmission runner, a plurality of projection, first successively decrease piece and second successively decreases piece.Wherein, the first chamber housing fluid; The one end of mixing runner is connected with the first chamber, and the other end is connected with vibration chamber; One end of transmission runner is connected with vibration chamber, and the other end is connected with the second chamber.The plurality of projection is crisscross arranged and is mixing on two relative inwalls of runner; First piece that successively decreases is arranged on the inwall that mixes runner, and the first sectional area near vibration chamber that successively decreases piece is less than the sectional area away from vibration chamber; Second piece that successively decreases is arranged on the inwall of transmission runner, second successively decrease piece near the sectional area of the second chamber, be less than the sectional area away from the second chamber; The corresponding vibration of vibrating elements chamber is positioned on the surface of main body; Vibrating elements receives electronic signal and produces the volume change that vibration makes to vibrate chamber, thereby fluid is drawn to the second chamber from the first cavity pump.
In one embodiment, fluid is gas, liquid or gas liquid mixture.
In one embodiment, this vibrating elements is piezoelectric membrane etc.
In one embodiment, this micro-mixer comprises a plurality of first piece that successively decreases, and is arranged on the inwall that mixes runner.
In one embodiment, this micro-mixer comprises a plurality of second piece that successively decreases, and is arranged on the inwall of transmission runner.
In one embodiment, this projection successively decreases between piece and vibration chamber first.
Micro-mixer of the present invention is owing to vibrating elements being arranged on the surface of main body, first piece and second piece that successively decreases that successively decreases is separately positioned on to the inwall that mixes runner and transmission runner, thereby can makes by the vibration of vibrating elements liquid or gas in blender flow towards fixed-direction.In addition, micro-mixer of the present invention arranges a plurality of staggered projections on the two relative inwalls that mix runner, thereby can make to mix quickly between liquid, between gas or between gas liquid.
Accompanying drawing explanation
Fig. 1 is the structural representation of micro-mixer of the present invention.
Fig. 2 is that Fig. 1 is along the sectional view of A-A '.
Fig. 3 is the micro-mixer of Fig. 2 sectional view when vibration cavity volume increases.
Fig. 4 be the micro-mixer of Fig. 2 in vibration cavity volume the sectional view while dwindling.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, micro-mixing of the present invention is risen and is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As illustrated in fig. 1 and 2, micro-mixer 1 comprises main body 2 and vibrating elements 3.Main body 2 comprises upper substrate 2a and infrabasal plate 2b, and upper substrate 2a is arranged on the composition surface 2c of infrabasal plate 2b.The material of upper substrate 2a and infrabasal plate 2b is glass, silicon wafer, acrylic, PMMA etc.
In other embodiments, relief pattern can be formed on upper substrate 2a.Also can on upper substrate 2a and infrabasal plate 2b, all form relief pattern.
A plurality of the first chambers 21 can hold multiple fluid.This fluid comprises gas or liquid.
The one end of mixing runner 23 is connected with the first chamber 21, and the other end is connected with vibration chamber 22.
One end of transmission runner 25 is connected with vibration chamber 22, and the other end is connected with the second chamber 24.
Vibrating elements 3 is positioned on the surface of infrabasal plate 2b, and the position of vibrating elements 3 is corresponding to vibration chamber 23.Vibrating elements 3 can be piezoelectric membrane.Vibrating elements 3 receives electronic signal, produces double vibrations on direction of vibration.
In addition, micro-mixer 1 also comprises input pipe 4 and efferent duct 5.When vibrating elements 3 vibration, fluid flows in the first chamber 21 through input pipe 4, after micro-mixer 1 mixes, outside efferent duct 5 exports micro-mixer 1 to.
Operation principle below in conjunction with Fig. 3 and 4 explanation micro-mixers.
When vibrating elements 3 is bent downwardly, the driving of vibration chamber 22 vibrated element 3 and volume increases, fluid in micro-mixer 1 flows to vibration chamber 22 from the first chamber 21 and the second chamber 24, fluid is subject to the first resistance while successively decreasing piece 27 through first, is subject to the second resistance while successively decreasing piece 28 through second.Wherein, when fluid successively decreases piece 27 through first, the first distance of successively decreasing piece 27 and mixing the inwall of runner 23 increases gradually; When fluid successively decreases piece 28 through second, the second distance of successively decreasing between piece 28 and the inwall of transmission runner 25 reduces gradually, and therefore the first resistance is less than the second resistance.Therefore the flow that, flows to from the first chamber 21 fluid that vibrates chamber 22 is greater than the flow that flows to the fluid of vibration chambers 22 from the second chamber 24.
When vibrating elements 3 is bent upwards, the driving of vibration chamber 22 vibrated element 3 and volume reduces, fluid in micro-mixer 1 flows to the first chamber 21 and the second chamber 24 from vibration chamber 22, fluid is subject to the 3rd resistance while successively decreasing piece 27 through first, be subject to the 4th resistance while successively decreasing piece 28 through second.Wherein, when fluid successively decreases piece 27 through first, the first distance of successively decreasing piece 27 and mixing the inwall of runner 27 reduces gradually; When fluid successively decreases piece 28 through second, the second distance of successively decreasing between piece 28 and the inwall of transmission runner 25 increases gradually, and therefore the 3rd resistance is greater than the 4th resistance.Therefore the flow that, flows to the fluid of the first chamber 21 from vibration chamber 22 is less than the flow that flows to the fluid of the second chamber 24 from vibration chamber 22.
Therefore, when vibrating elements 3 receives electronic signal, produce after double vibrations, the fluid in micro-mixer 1 flows to the second chamber 24 from the first chamber 21 on the whole.
In addition, because projection 26 is on mixing the impact in flow field in runner 23, fluid can be subject to staggered disturbance in mixing runner 23, so the contact area between fluid increases.Meanwhile, between projection 26, produce recirculating zone, make the refluxed impact of effect of fluid strengthen mixing efficiency.
In sum, micro-mixer tool of the present invention has the following advantages:
Owing to mixing in runner, there are a plurality of staggered projections, therefore can in extremely short distance, evenly and expeditiously mix two or more fluids.
Owing to adopting vibrating elements to drive the volume-variation of vibration chamber, therefore do not need external fluid pushing equipment, thereby be easy to carry, easy-to-use.
Simple in structure due to micro-mixer, so its low cost of manufacture.
The above specific embodiment is only for describing the technical scheme of micro-mixer of the present invention; be not used in restriction the present invention; those skilled in the art, in not departing from the scope of the present invention, can obtain various modification and combination, so protection scope of the present invention are as the criterion with claims.
Claims (6)
1. a micro-mixer, is characterized in that, this micro-mixer comprises main body and vibrating elements, wherein,
This main body comprises a plurality of the first chambers, vibration chamber, mixes runner, the second chamber, transmission runner, a plurality of projection, first successively decrease piece and second successively decreases piece;
This first chamber housing fluid;
This one end of mixing runner is connected with this first chamber, and the other end is connected with this vibration chamber;
One end of this transmission runner is connected with this vibration chamber, and the other end is connected with this second chamber;
The plurality of projection is crisscross arranged on two relative inwalls of this mixing runner;
This first piece that successively decreases is arranged on the inwall of this mixing runner, and this first sectional area near this vibration chamber that successively decreases piece is less than the sectional area away from this vibration chamber;
This second piece that successively decreases is arranged on the inwall of this transmission runner, and this second sectional area near this second chamber that successively decreases piece is less than the sectional area away from this second chamber;
This vibrating elements is to being positioned on the surface of this main body vibration cavity chamber, and this vibrating elements receives electronic signal and produces the volume change that vibration makes this vibration chamber, thereby this fluid is transferred to this second chamber from this first chamber.
2. micro-mixer as claimed in claim 1, is characterized in that, this fluid is gas, liquid or gas liquid mixture.
3. the micro-mixer as described in any one in claim 1～2, is characterized in that, this vibrating elements is piezoelectric membrane.
4. micro-mixer as described in claim 3, is characterized in that, comprises a plurality of these first pieces that successively decrease, and is arranged on the inwall of this mixing runner.
5. the micro-mixer as described in any one in claim 3 or 4, is characterized in that, comprises a plurality of these second pieces that successively decrease, and is arranged on the inwall of this transmission runner.
6. the micro-mixer as described in any one in claim 3 or 4, is characterized in that, this projection first successively decreases between piece and this vibration chamber at this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110442533.1A CN102553480B (en) | 2011-12-26 | 2011-12-26 | Micro mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110442533.1A CN102553480B (en) | 2011-12-26 | 2011-12-26 | Micro mixer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102553480A CN102553480A (en) | 2012-07-11 |
| CN102553480B true CN102553480B (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110442533.1A Expired - Fee Related CN102553480B (en) | 2011-12-26 | 2011-12-26 | Micro mixer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10232338B2 (en) | 2013-11-25 | 2019-03-19 | Lg Chem, Ltd. | Micro-channel reactor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103638852B (en) * | 2013-11-11 | 2015-08-05 | 江苏大学 | A kind of synthesizing jet-flow Valveless piezoelectric micro-mixer |
| CN113262691B (en) * | 2021-05-10 | 2022-03-25 | 浙江师范大学 | Active piezoelectric solid-liquid micro-mixer |
| CN113101849B (en) * | 2021-05-10 | 2022-02-11 | 浙江师范大学 | Pipeline type piezoelectric micro mixer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH119982A (en) * | 1997-06-25 | 1999-01-19 | Toshiba Mach Co Ltd | Powder mixed gas forming device |
| DE10106952A1 (en) * | 2001-02-15 | 2002-09-05 | Cognis Deutschland Gmbh | Chip reactor |
| TWI286084B (en) * | 2006-03-10 | 2007-09-01 | Horn-Jiun Sheen | Micro mixer |
| CN201551980U (en) * | 2009-12-07 | 2010-08-18 | 颜金钰 | Micro mixer |
-
2011
- 2011-12-26 CN CN201110442533.1A patent/CN102553480B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH119982A (en) * | 1997-06-25 | 1999-01-19 | Toshiba Mach Co Ltd | Powder mixed gas forming device |
| DE10106952A1 (en) * | 2001-02-15 | 2002-09-05 | Cognis Deutschland Gmbh | Chip reactor |
| TWI286084B (en) * | 2006-03-10 | 2007-09-01 | Horn-Jiun Sheen | Micro mixer |
| CN201551980U (en) * | 2009-12-07 | 2010-08-18 | 颜金钰 | Micro mixer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10232338B2 (en) | 2013-11-25 | 2019-03-19 | Lg Chem, Ltd. | Micro-channel reactor |
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| CN102553480A (en) | 2012-07-11 |
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