CN109772222A - A kind of gas mixer - Google Patents
A kind of gas mixer Download PDFInfo
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- CN109772222A CN109772222A CN201910166693.4A CN201910166693A CN109772222A CN 109772222 A CN109772222 A CN 109772222A CN 201910166693 A CN201910166693 A CN 201910166693A CN 109772222 A CN109772222 A CN 109772222A
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Abstract
The invention belongs to fluid drive areas, and in particular to a kind of gas mixer.End cap is intracavitary mounted in the main body upper sinking that energy converter is crimped on main body by two sides and sealed circle up and down, and energy converter is formed by substrate and piezoelectric piece bonding；On sink intracavitary energy converter and main body and sealing ring constitutes upper cavity, the energy converter for sinking intracavitary and main body and sealing ring constitutes lower cavity；The cavity up and down of balanced configuration is simultaneously unified into a cavity group, the adjacent two cavity groups series connection in left and right；Energy converter on the leftmost side in cavity is connected by one group of conducting wire with power supply, and the energy converter and other energy converters under the leftmost side in cavity are connected by another group of conducting wire with power supply；Cavity up and down in one cavity group sucks simultaneously or discharge gas, by upper tripping in hole flow area regulating gas mixed proportion when the driving voltage of energy converter is identical in the cavity up and down of the leftmost side, pass through the driving voltage regulating gas mixed proportion of energy converter in cavity above and below the leftmost side when upper tripping in hole flow area is identical.
Description
Technical field
The invention belongs to fluid transmission and control fields, and in particular to a kind of gas mixer.
Background technique
Flow mixer is the key that the indispensable fluidic devices in the fields such as biochemistry, medical treatment, food, environmental monitoring.Initially
Flow mixer be mostly passive type, by fluid motion path be arranged particular geometries change Flow Field Distribution simultaneously
Mixing is realized in conjunction with the free diffusing of fluid molecule, and structure is simple, easily fabricated stable with integrated and performance, the disadvantage is that mixing
Process is longer, speed is slow and mixed process is uncontrollable；In recent years, people propose the active fluid mixing of diversified forms in succession
Device promotes fluid to mix by external impetus, and according to power resources, existing active mixer mainly has electromagnetic type and piezoelectric type
Two classes, wherein piezoelectric fluid mixer structure is simple, small in size, mixed effect and process control are also preferable.Existing piezoelectric type
Active mixer is substantially using single piezoelectric vibrator as the synchronous realization fluid pumping of energy converter and mixed dual function, stream
Body pumping energy is limited, is unable to satisfy the gas mixing requirement that conveying capacity is big, output pressure is high；In addition, existing piezoelectric fluid is mixed
Clutch synchronizes two kinds of different fluids of driving using the same energy converter, passes through the two entrances of same chamber suck stream simultaneously
Body is unable to accurately control the pump output of two kinds of fluids.Obviously, the driving capability of piezoelectric fluid mixer, mixed effect and mixing
Distributing precision etc. all needs to be further improved.
Summary of the invention
For conveying capacity, mixed effect and the mixing match precision for improving mixer, the present invention proposes a kind of gas mixing
Device, embodiment of the present invention are: main body be equipped with upper tripping in hole, portal and at least two by balanced configuration upper sinking chamber structure
At heavy chamber group, be designed with cabling channel on the side wall of upper sinking chamber；The bottom wall of upper heavy chamber is equipped with heavy on enterprising oral cavity, the rightmost side
Upper outlet chamber is additionally provided on the bottom wall of chamber, the roof of sinking chamber is equipped on the roof of lower inlet chamber, rightmost side sinking chamber and also sets
There is a lower outlet plenum, upper and lower outlet plenum is all connected to portalling；The leftmost side sink chamber group snout cavity up and down be connected to respectively with upper tripping in hole,
Snout cavity up and down in remaining same heavy chamber group is connected to through flow-in hole, upper and lower in other heavy chamber groups other than the heavy chamber group in the rightmost side
Heavy chamber is also connected to through flow-out hole；Two or so adjacent disengaging discharge orifices are connected to through mixed flow hole, disengaging discharge orifice flow area it is equal and
No more than the half of mixed flow hole flow area；End cap is mounted on main body or more two sides through screw and sealed circle crimps energy converter
Intracavitary in upper sinking, sealing ring is located at energy converter two sides up and down；Energy converter is formed by substrate and piezoelectric piece bonding, and piezoelectric patches is close
End cap installation, transducer face are coated with insulated paint or are bonded with insulation film；Upper and lower snout cavity is installed unidirectional with its inside
Valve respectively constitutes inlet valve up and down, and upper and lower outlet plenum and its internal check valve installed respectively constitute outlet valve up and down；Unidirectionally
Valve is successively bonded by pressure ring, valve block and valve seat, and valve block is connected the spiral shell of cover plate and ring plate by cover plate, ring plate and at least three
Blade is constituted, and the two sides of ring plate are Nian Jie with pressure ring and valve seat respectively；Valve block be bonded before side pre-bending from flight to ring plate, bonding
Back cover plate is got lodged on the valve opening of valve seat；On sink intracavitary energy converter and main body and sealing ring constitutes upper cavity, intracavitary change of sinking
It can device and main body and the lower cavity of sealing ring composition；The cavity up and down of balanced configuration is simultaneously unified into a cavity group, left and right it is adjacent two
A cavity group series connection；The polarization direction of two energy converters is identical in the same cavity group, transducing in the two neighboring cavity group in left and right
The polarization direction of device refers to that polarization direction is all directed toward piezoelectric patches by substrate or is all directed toward base by piezoelectric patches on the contrary, polarization direction is identical
Plate；Cavity on the leftmost side, the energy converter in upper cavity i.e. adjacent with hole is above entered are connected by one group of conducting wire with power supply, under the leftmost side
Energy converter and other energy converters in cavity are connected by another group of conducting wire with power supply.
In the present invention, the cavity up and down in a cavity group sucks simultaneously or discharge gas, and the gas being discharged is through mixed flow
Hole enters back into next cavity group cavity up and down after passively mixing carries out active mixing, and actively mixed gas enters back into down
One mixed flow hole is passively mixed, and completes the conveying and mixing of gas repeatedly.It is changed in the cavity up and down of the leftmost side
By upper tripping in hole flow area regulating gas mixed proportion when the driving voltage of energy device is identical, upper tripping in hole flow area is identical
When pass through the driving voltage regulating gas mixed proportion of energy converter in cavity above and below the leftmost side.
For having the mixer there are three cavity group, from left to right, upper inlet valve is successively defined as upper inlet valve one, two
With three, lower inlet valve is successively defined as lower inlet valve one, two and three, and upper cavity is successively defined as cavity one, two and three, lower appearance
Chamber is successively defined as lower cavity one, two and three；The course of work are as follows: in the upper half period, upper cavity one and three and lower cavity one and three
Volume increase, the volume of upper cavity two and lower cavity two reduces, and upper inlet valve one and three and lower inlet valve one and three are opened, on
Inlet valve two, lower inlet valve two, upper outlet valve and lower outlet valve are closed, and upper cavity one enters hole from above and sucks a kind of gas, lower appearance
Chamber one sucks another gas from tripping in hole, and the gas in upper cavity two and lower cavity two enters back into upper appearance after the mixing of mixed flow hole
Chamber three and lower cavity three；In the lower half period, the volume of upper cavity one and three and lower cavity one and three reduces, upper cavity two and lower appearance
The volume of chamber two increases, and upper inlet valve one and three, lower inlet valve one and three are closed, upper inlet valve two, lower inlet valve two, upper outlet
Valve and lower outlet valve are opened, and the gas in upper cavity one and lower cavity one enters upper cavity two and lower cavity after the mixing of mixed flow hole
In two, the gas in upper cavity three and lower cavity three, which enters, to portal；Since the volume in mixed flow hole is a cavity in a cycle
Twice or more of cavity volume variable quantity up and down in group, therefore simultaneously there is the gas that at least two sides are discharged into the mixed flow hole of the leftmost side
Body increases passive mixed effect, and gas enters back into next cavity group after tentatively mixing, and realizes actively through transducer vibrations
Next mixed flow hole is entered back into after mixing passively to be mixed；In the above-mentioned course of work, other than upper cavity one and lower cavity one,
The dual function that all there is other cavities gas pumping to mix with active.
In the present invention, energy converter is formed by equal thickness PZT4 chip and brass substrate bonding, upper tripping in hole flow area phase
Meanwhile the output flow and pressure of two kinds of gas equal proportion mixing are as follows: In formula: ηq、ηpThe respectively relevant flow of system parameter and pressure
Correction factor, R, H are respectively heavy chamber radius and height, and maximum input voltage acts on lower energy converter central point when H is not less than P=0
Deflection, hpFor piezoelectric patches thickness, f is driving frequency, U0For driving voltage, N is the quantity of cavity group, β0It is equivalent for gas
Bulk modulus.
Advantage is with characteristic: driving and mixes by the way that multi-cavity is synchronous, fluid delivery capability is strong, intracavitary active mixing and mixed flow hole
Passive mixed phase combines, good mixing effect, the continuous mixing and dispatching suitable for big viscosity fluid；It is different using two cavity suckings
Fluid is easy to through driving voltage or enters hole flow area control mixed proportion, and distributing precision is high.
Detailed description of the invention
Fig. 1 is the structural profile illustration of mixer in a preferred embodiment of the present invention；
Fig. 2 is the switch schematic diagram of the deformation of upper half energy converter and valve in a preferred embodiment of the present invention；
Fig. 3 is the switch schematic diagram of the deformation of lower half energy converter and valve in a preferred embodiment of the present invention；
Fig. 4 is the structural schematic diagram of main body in a preferred embodiment of the present invention；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is the structural schematic diagram of disc valve in a preferred embodiment of the present invention；
Fig. 7 is the structural schematic diagram of a preferred embodiment of the present invention middle valve plate；
Fig. 8 is the B-B sectional view of Fig. 7.
Specific embodiment
Main body a be equipped with above enter hole a1, tripping in hole a2, portal a3 and at least two by balanced configuration upper heavy chamber a4 and under
Cabling channel a6 is designed on the side wall of the heavy chamber group that heavy chamber a5 is constituted, upper heavy chamber a4 and sinking chamber a5；On the bottom wall of upper heavy chamber a4
It is additionally provided with upper outlet chamber a8 on bottom wall equipped with chamber a4 heavy on enterprising oral cavity a7, the rightmost side, the roof of sinking chamber a5 is equipped with down
Snout cavity a7 ', rightmost side sinking chamber a5 roof on be additionally provided with lower outlet plenum a8 ', upper outlet chamber a8 and lower outlet plenum a8 ' with go out
Hole a3 connection；The leftmost side sink chamber group enterprising oral cavity a7 and lower inlet chamber a7 ' respectively with above enter hole a1 and tripping in hole a2 be connected to, its
Enterprising oral cavity a7 in remaining same heavy chamber group is connected to lower inlet chamber a7 ' through flow-in hole a9, other other than the heavy chamber group in the rightmost side
Upper heavy chamber a4 in heavy chamber group is also connected to through flow-out hole a10 with sinking chamber a5；Two or so adjacent flow-in hole a9 and flow-out hole
A10 is connected to through mixed flow hole a11, and the flow area of flow-in hole a9 and flow-out hole a10 are equal and are not more than mixed flow hole a11 flow area
Half；End cap b is mounted on the two sides up and down of main body a through screw, and energy converter d is crimped on by the sealed circle e of end cap boss b1
In heavy chamber a4 and sinking chamber a5, sealing ring e is located at the two sides energy converter d or more；Energy converter d by substrate d1 and piezoelectric patches d2 bonding and
At piezoelectric patches d2 is installed by proximal cover b, and the surface of energy converter d is coated with insulated paint or is bonded with insulation film；Enterprising oral cavity a7 and
Lower inlet chamber a7 ' and its internal check valve c installed respectively constitute upper inlet valve sin and lower inlet valve xin, upper outlet chamber a8
Upper outlet valve so and lower outlet valve xo are respectively constituted with lower outlet plenum a8 ' and its internal check valve c installed；Check valve c by
Pressure ring k, valve block i and valve seat j are successively bonded, and valve block i is by cover plate i1, ring plate i3 and at least three connection cover plate i1 and ring
The flight i2 of piece i3 is constituted, and the two sides of ring plate i3 are Nian Jie with pressure ring k and valve seat j respectively；Valve block i is bonded preceding flight i2 to ring
The side pre-bending of piece i3, bonding back cover plate i1 are got lodged on the valve opening of valve seat j；Energy converter d and main body a and sealing in upper heavy chamber a4
Cavity scn in e composition is enclosed, the energy converter d and main body a and sealing ring e in sinking chamber a5 constitute lower cavity xcn；Symmetrical above and below
Upper cavity scn and lower cavity xcn is simultaneously unified into a cavity group, the adjacent two cavity groups series connection in left and right；In the same cavity group
The polarization direction p of two energy converter d is identical, in the two neighboring cavity group in left and right energy converter d polarization direction p on the contrary, polarization side
Refer to that polarization direction is all directed toward piezoelectric patches d2 by substrate d1 or all by piezoelectric patches d2 direction substrate d1 to identical；Cavity on the leftmost side
Energy converter d in scn, upper cavity scn i.e. adjacent with hole a1 is above entered is connected by one group of conducting wire with power supply, cavity under the leftmost side
Energy converter d and other energy converter d in xcn are connected by another group of conducting wire with power supply；In the present invention, in sin, xin, scn and xcn
N indicate serial number from left to right, n=1,2,3 ....
In the present invention, upper cavity scn and lower cavity xcn in a cavity group are sucked simultaneously or discharge gas, is discharged
Gas entered back into after mixed flow hole a11 is passively mixed next cavity group upper cavity scn and lower cavity xcn carry out it is actively mixed
It closes, actively mixed gas enters back into next mixed flow hole a11 and passively mixed, and completes the defeated of gas repeatedly
It send and mixes.When the upper cavity scn of the leftmost side is identical as the driving voltage of energy converter d in lower cavity xcn by above enter hole a1 and
Tripping in hole a2 flow area regulating gas mixed proportion, above enter hole a1 it is identical with tripping in hole a2 flow area when by the leftmost side
The driving voltage of energy converter d adjusts the mixed proportion of two kinds of gas in cavity scn and lower cavity xcn.
For having the mixer there are three cavity group, from left to right, upper inlet valve sin is successively defined as upper inlet valve one
Si1, two si2 and three si3, lower inlet valve xin are successively defined as one xi1 of lower inlet valve, two xi2 and three xi3, upper cavity scn according to
Secondary to be defined as one sc1 of cavity, two sc2 and three sc3, lower cavity xcn is successively defined as lower one xc1 of cavity, two xc2 and three xc3；
The course of work are as follows: in the upper half period, the volume of upper one sc1 of cavity and three sc3 and lower cavity one xc1 and three xc3 increase, upper cavity
The volume of two sc2 and lower two xc2 of cavity reduce, and upper inlet valve one si1 and three si3 and lower inlet valve one xi1 and three xi3 are opened,
Two si2 of upper inlet valve, two xi2 of lower inlet valve, upper outlet valve so and lower outlet valve xo are closed, and upper one sc1 of cavity enters hole a1 from above
A kind of gas is sucked, lower one xc1 of cavity is out of another gas of tripping in hole a2 sucking, upper two sc2 of cavity and lower two xc2 of cavity
Gas enters back into three xc3 of upper three sc3 of cavity and lower cavity after mixed flow hole a11 mixing；In the lower half period, upper one sc1 of cavity and
The volume of three sc3 and lower cavity one xc1 and three xc3 reduce, and the volume of upper two sc2 of cavity and lower two xc2 of cavity increase, upper inlet
Valve one si1 and three si3, lower inlet valve one xi1 and three xi3 are closed, two si2 of upper inlet valve, two xi2 of lower inlet valve, upper outlet valve
So and lower outlet valve xo is opened, and the gas in upper one sc1 of cavity and lower one xc1 of cavity enters upper appearance after mixed flow hole a11 mixing
In two sc2 of chamber and lower two xc2 of cavity, the gas in upper three sc3 of cavity and lower three xc3 of cavity enters the a3 that portals；Due to mixed flow hole
The volume of a11 is in a cycle twice or more of upper cavity scn and lower cavity xcn volume variable quantity in a cavity group, therefore
Simultaneously there is gas that at least two sides are discharged into the a11 of leftmost side mixed flow hole, increase passive mixed effect, gas is through preliminary mixed
Next cavity group is entered back into after conjunction, is entered back into next mixed flow hole after energy converter d vibration realizing actively mixes and is carried out passively
Mixing；In the above-mentioned course of work, other than upper one sc1 of cavity and lower one xc1 of cavity, other cavities all have gas pumping and master
Dynamic mixed dual function.
In the present invention, energy converter d is formed by equal thickness PZT4 chip and brass substrate bonding, above enters hole a1 and tripping in hole a2
When flow area is identical, the output flow and pressure of two kinds of gas equal proportion mixing are as follows: In formula: ηq、ηpThe respectively relevant flow of system parameter and pressure
Correction factor, R, H are respectively heavy chamber radius and height, and maximum input voltage acts on lower energy converter d central point when H is not less than P=0
Deflection, hpFor the thickness of piezoelectric patches d2, f is driving frequency, U0For driving voltage, N is the quantity of cavity group, β0For gas
Equivalent volume modulus.
Claims (1)
1. a kind of gas mixer, it is characterised in that: main body is equipped with upper tripping in hole, portals and at least two by balanced configuration
The heavy chamber group that upper sinking chamber is constituted, the bottom wall of upper heavy chamber be equipped with enterprising oral cavity, sink on the rightmost side chamber bottom wall on be additionally provided with
Outlet plenum, the roof of sinking chamber are equipped on the roof of lower inlet chamber, rightmost side sinking chamber and are additionally provided with lower outlet plenum, export up and down
Chamber is all connected to portalling；The snout cavity up and down of the heavy chamber group in the leftmost side is connected to, in remaining same heavy chamber group respectively with upper tripping in hole
Upper and lower snout cavity is connected to through flow-in hole, and the upper sinking chamber in other heavy chamber groups other than the heavy chamber group in the rightmost side also connects through flow-out hole
It is logical；Two or so adjacent disengaging discharge orifices are connected to through mixed flow hole, and disengaging discharge orifice flow area is equal and through-flow no more than mixed flow hole
The half of area；End cap mounted in main body up and down two sides and it is sealed circle by energy converter be crimped on it is upper sink it is intracavitary, energy converter is by base
Plate and piezoelectric piece bonding form, and piezoelectric patches is installed by proximal cover；Upper and lower snout cavity and its internal check valve difference structure installed
At upper and lower inlet valve, upper and lower outlet plenum and its internal check valve installed respectively constitute outlet valve up and down；On sink intracavitary change
Energy device and main body and sealing ring constitute upper cavity, the energy converter for sinking intracavitary and main body and the lower cavity of sealing ring composition；Symmetrically match
The cavity up and down set simultaneously is unified into a cavity group, the adjacent two cavity groups series connection in left and right；Two transducings in the same cavity group
The polarization direction of device is identical, the polarization direction of energy converter is opposite in the two neighboring cavity group in left and right；Changing in cavity on the leftmost side
Energy device is connected by one group of conducting wire with power supply, and the energy converter and other energy converters under the leftmost side in cavity are by another group of conducting wire and power supply
It is connected, the cavity up and down in a cavity group sucks simultaneously or discharge gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910166693.4A CN109772222B (en) | 2019-03-01 | 2019-03-01 | Gas mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910166693.4A CN109772222B (en) | 2019-03-01 | 2019-03-01 | Gas mixer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109772222A true CN109772222A (en) | 2019-05-21 |
| CN109772222B CN109772222B (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910166693.4A Active CN109772222B (en) | 2019-03-01 | 2019-03-01 | Gas mixer |
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| CN (1) | CN109772222B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244371A (en) * | 2008-03-28 | 2008-08-20 | 杨志刚 | Accurate solution matching device |
| CN101362059A (en) * | 2007-08-07 | 2009-02-11 | 国际商业机器公司 | Microfluid mixer, methods of use and methods of manufacture thereof |
| CN103768985A (en) * | 2013-12-25 | 2014-05-07 | 浙江师范大学 | Novel piezoelectric driving microfluid mixer and preparation technology thereof |
| US20170189909A1 (en) * | 2015-12-30 | 2017-07-06 | The Regents Of The University Of California | Enhanced cell/bead encapsulation methods and apparatuses |
| WO2019026936A1 (en) * | 2017-08-01 | 2019-02-07 | 本田技研工業株式会社 | Liquid-mixing apparatus and liquid-mixing method |
-
2019
- 2019-03-01 CN CN201910166693.4A patent/CN109772222B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101362059A (en) * | 2007-08-07 | 2009-02-11 | 国际商业机器公司 | Microfluid mixer, methods of use and methods of manufacture thereof |
| CN101244371A (en) * | 2008-03-28 | 2008-08-20 | 杨志刚 | Accurate solution matching device |
| CN103768985A (en) * | 2013-12-25 | 2014-05-07 | 浙江师范大学 | Novel piezoelectric driving microfluid mixer and preparation technology thereof |
| US20170189909A1 (en) * | 2015-12-30 | 2017-07-06 | The Regents Of The University Of California | Enhanced cell/bead encapsulation methods and apparatuses |
| WO2019026936A1 (en) * | 2017-08-01 | 2019-02-07 | 本田技研工業株式会社 | Liquid-mixing apparatus and liquid-mixing method |
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| Publication number | Publication date |
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| CN109772222B (en) | 2021-03-02 |
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Effective date of registration: 20220824 Address after: 230000 Room 203, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Hefei Jiuzhou Longteng scientific and technological achievement transformation Co.,Ltd. Address before: 321004 Zhejiang Normal University, 688 Yingbin Avenue, Wucheng District, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG NORMAL University |
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Effective date of registration: 20221017 Address after: 201900 Room 218, Building 2, No. 2121, Baoyang Road, Baoshan District, Shanghai Patentee after: Baoruite Gas Co.,Ltd. Address before: 230000 Room 203, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Hefei Jiuzhou Longteng scientific and technological achievement transformation Co.,Ltd. |