CN114769005A - Aerosol gas distribution device of electric mobility classifier - Google Patents
Aerosol gas distribution device of electric mobility classifier Download PDFInfo
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- 239000000443 aerosol Substances 0.000 title claims abstract description 206
- 238000009826 distribution Methods 0.000 title claims abstract description 40
- 239000002245 particle Substances 0.000 claims abstract description 42
- 125000006850 spacer group Chemical group 0.000 claims abstract description 31
- 239000000872 buffer Substances 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000001629 suppression Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 8
- 238000009827 uniform distribution Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 abstract description 14
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 239000013618 particulate matter Substances 0.000 description 12
- 230000005684 electric field Effects 0.000 description 6
- 238000007873 sieving Methods 0.000 description 6
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- 239000004677 Nylon Substances 0.000 description 2
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- 229920006362 Teflon® Polymers 0.000 description 2
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- 230000002146 bilateral effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
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Abstract
The invention provides an aerosol gas distribution device of an electric mobility classifier, which is suitable for a cylindrical coaxial type aerosol electric mobility classifier and comprises an aerosol inlet piece, a triangular splitter and a sheath gas and aerosol spacer ring, wherein the aerosol inlet piece is a peripheral cavity of the aerosol gas distribution device; the triangular flow divider is an aerosol airflow guide module and realizes annular guide of airflow; the sheath gas and aerosol spacer ring is used to convert the aerosol gas flow into a circumferentially uniformly distributed laminar flow. The invention reduces the buffer volume of the aerosol inlet, reduces the loss of particles in the gas distribution process, and improves the screening and transmission efficiency of the electric mobility classifier.
Description
Technical Field
The invention belongs to the technical field of environmental monitoring, and particularly relates to an aerosol gas distribution device of an electric mobility classifier.
Background
For the characterization of the particulate matter concentration in the environment, it is common to use the particulate matter mass concentration, such as PM2.5And PM10Or the total concentration of particulate matter. Since the influence of different particle sizes on the environment or individuals varies, it is necessary to measure the concentration of particles having different particle sizes. For the screening of the particle size of the submicron particulate matter, generally based on the characteristic of the electrical mobility of the particulate matter, when the particulate matter carries 1 charge, the larger the particle size of the particulate matter is, the smaller the corresponding electrical mobility is; the smaller the particle size of the particles is, the higher the electric mobility is; the electric field intensity is adjusted to screen out particles with a certain specific electric mobility grain size, and an instrument based on the method is called an electric mobility classifier.
The most common structure of the electric mobility classifier is a cylindrical coaxial structure and comprises an inner electrode and an outer electrode, wherein the inner electrode applies high voltage, the outer electrode is grounded, and a radial electric field is formed between the two electrodes; on a flow field, the electric mobility classifier needs two airflows of sheath gas and aerosol when working normally, the sheath gas is clean and dry, is close to an inner electrode and is distributed in a laminar flow manner; the aerosol airflow is close to the outer electrode and is positioned between the sheath airflow and the outer electrode, under the normal condition, the sheath airflow is larger than the aerosol flow, and the larger the flow ratio of the sheath airflow to the aerosol is, the better the monodispersity of the particles screened by the electric mobility classifier is. When the high voltage of the inner electrode is fixed, particles with a certain specific electric mobility can pass through the sheath gas flow of the inner layer from the peripheral aerosol gas flow to reach the aerosol outlet, and then are measured by a downstream detector. The characteristics of the electric mobility classifier can be characterized by a transmission equation, under the condition that diffusion loss is not considered, and the flow rates of an aerosol inlet and an aerosol outlet are equal, the half width of the transmission equation represents the resolution of the sieving particle size of the electric mobility classifier, and when the flow rate ratio of the sheath gas to the aerosol is 10:1, the resolution is 0.1; the height of the transmission equation is 1.0.
One of the key points of the electric mobility classifier is whether the aerosol can be well and uniformly distributed between the sheath gas flow and the outer electrode, and the non-uniform distribution of the aerosol can directly cause the asymmetry of the transmission equation of the electric mobility classifier or influence the height and half width of the transmission equation. The conventional aerosol distribution modes include the following modes: firstly, an aerosol buffer area is enlarged, for example, a 3081 type electric mobility classifier produced by the American TSI company, a larger buffer area is arranged in an aerosol inlet area, and a slit area is increased to achieve the purpose of uniform gas distribution; secondly, the air distribution is carried out by arranging small holes on the circumference of the aerosol inlet area in a mode of increasing air distribution holes, such as an electric mobility classifier produced by GRIMM company; thirdly, one path of aerosol is divided into multiple paths outside the electric mobility classifier in a mode of a plurality of aerosol air inlets, so that the complexity of the system is greatly improved; and fourthly, the aerosol rotates in the electric mobility classifier by entering through tangential airflow, and the method enables the airflow to have a large tangential speed and is easy to cause uneven air distribution of the aerosol.
In summary, how to realize that the gas distribution device reduces the loss of particles at the inlet while reducing the buffer volume of the aerosol inlet, and improves the screening and transmission efficiency of the electric mobility classifier has become a problem to be solved urgently.
Disclosure of Invention
In order to overcome a series of defects in the prior art, the invention aims to solve the problems and provide an aerosol gas distribution device of an electric mobility classifier, which is suitable for a cylindrical coaxial type aerosol electric mobility classifier and comprises an aerosol inlet piece 1, a triangular splitter 2 and a sheath gas and aerosol spacing ring 3, and is characterized in that,
the aerosol inlet piece 1 is a peripheral cavity of the aerosol gas distribution device;
the triangular flow divider 2 is an aerosol airflow guide module and realizes annular guide of airflow;
the sheath gas and aerosol spacing ring 3 is used for converting aerosol airflow into laminar flow with uniform distribution on the circumference.
Preferably, the triangular splitter 2 is an integrally processed bilateral symmetry structure, and comprises a splitter ring 2-1, a triangular splitter unit 2-2 and a turbulent vortex suppression unit 2-3, wherein,
the triangular flow dividing unit 2-2 and the turbulent vortex suppression unit 2-3 are positioned on the flow divider circular ring 2-1 and are symmetrically distributed along the center line of an aerosol inlet;
triangle-shaped shunt 2 passes through shunt ring 2-1's locating pin and aerosol entrance 1 fix a position and place, sheath gas and aerosol spacer ring 3 with carry out sealing connection through the side sealing washer between the aerosol entrance 1, compress tightly sheath gas and aerosol spacer ring 3 in, sheath gas and aerosol spacer ring 3 with triangle-shaped shunt 2 is extruded and has been realized triangle-shaped shunt 2's is fixed, fixed back aerosol entrance 1 with two parts are regional in the middle of sheath gas and the aerosol spacer ring 3, are aerosol buffers 5 in shunt ring 2-1 top, are aerosol annular channel 6 in shunt ring 2-1 below.
Preferably, the inside of the aerosol gas distribution device is a circular hollow structure, a straight pipe with an outer diameter of 1/4 inches is arranged on the side of the aerosol gas distribution device as a connecting end of the aerosol inlet piece 1, the aerosol enters the electrical mobility classifier through a port, after the aerosol enters the internal structure of the aerosol inlet piece 1, the aerosol firstly passes through the triangular flow divider 2 to divide one air flow into three air flows to realize rapid gas distribution of the aerosol, wherein two air flows are passages between the triangular flow divider unit 2-2 and the turbulent vortex suppression unit 2-3 to ensure rapid guiding distribution of the air flow in the aerosol buffer zone 5; the middle path is along the direction of the central line and is positioned between the two triangular shunting units 2-2, so that certain aerosol distribution is ensured to be opposite to the aerosol inlet area.
Preferably, the sheath gas and aerosol spacer ring 3 and the aerosol inlet member 1 form an annular channel to add a part of resistance to aerosol gas flow, so that after the aerosol passes through the aerosol buffer zone 5, the gas flow is distributed more uniformly in a slit area of the aerosol annular channel 6.
Preferably, the outer wall of the turbulence suppression unit 2-3 abuts against the inner circular inner wall of the aerosol inlet member 1, so as to avoid the velocity shear of the aerosol passing through the triangular flow divider 2 from forming turbulent eddies, which results in the loss of particles.
Preferably, the sheath gas and aerosol spacing ring 3 and the aerosol inlet piece 1 are coaxially arranged, and the triangular splitter 2 and the aerosol inlet piece 1 are coaxially arranged.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses an aerosol gas distribution device of an electric mobility classifier, which can inhibit the possibility of turbulent vortex generated by velocity shear while reducing the buffer volume of an aerosol inlet; and the loss of particles at an inlet can be reduced, and the screening and transmission efficiency of the electric mobility classifier is improved.
Drawings
FIG. 1 is a schematic structural diagram of an aerosol distribution device of an electromigration classifier according to the present invention;
fig. 2 is a schematic structural diagram of a triangular splitter in an aerosol gas distribution device of an electrical mobility classifier according to the present invention;
FIG. 3 is a schematic structural diagram of a preferred embodiment of the present invention;
fig. 4 shows the result of the preferred embodiment of the present invention.
The reference numbers in the figures are:
1: an aerosol inlet piece; 2: a triangular shunt; 3: a sheath gas and aerosol spacer ring; 4: an inner electrode; 5: an aerosol buffer zone; 6: an aerosol annular channel; 7: a laminar sheath gas zone; 8: a sheath gas and aerosol confluence zone; 9: an outer electrode; 10: a particulate matter screening zone;
2-1: a diverter ring; 2-2: a triangular shunting unit; 2-3: a turbulent vortex suppression unit.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention.
All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The embodiments and the directional terms described below with reference to the drawings are exemplary and intended to be used in the explanation of the invention, and should not be construed as limiting the invention.
In one broad embodiment of the present invention, an aerosol gas distribution device for an electric mobility classifier, suitable for a cylindrical coaxial type aerosol electric mobility classifier, comprises an aerosol inlet piece 1, a triangular splitter 2, and a sheath gas and aerosol spacer ring 3, characterized in that,
the aerosol inlet piece 1 is a peripheral cavity of the aerosol gas distribution device;
the triangular flow divider 2 is an aerosol airflow guide module and realizes annular guide of airflow;
the sheath gas and aerosol spacing ring 3 is used for converting aerosol airflow into laminar flow with uniform distribution on the circumference.
Preferably, the triangular splitter 2 is an integrally processed bilateral symmetry structure, and comprises a splitter ring 2-1, a triangular splitting unit 2-2 and a turbulent vortex suppression unit 2-3, wherein,
the triangular flow dividing unit 2-2 and the turbulent vortex suppression unit 2-3 are positioned on the flow divider circular ring 2-1 and are symmetrically distributed along the center line of an aerosol inlet;
triangle-shaped shunt 2 passes through shunt ring 2-1's locating pin and aerosol entrance 1 fix a position and place, sheath gas and aerosol spacer ring 3 with carry out sealing connection through the side sealing washer between the aerosol entrance 1, compress tightly sheath gas and aerosol spacer ring 3 in, sheath gas and aerosol spacer ring 3 with triangle-shaped shunt 2 is extruded and has been realized triangle-shaped shunt 2's is fixed, fixed back aerosol entrance 1 with two parts are regional in the middle of sheath gas and the aerosol spacer ring 3, are aerosol buffers 5 in shunt ring 2-1 top, are aerosol annular channel 6 in shunt ring 2-1 below.
Preferably, the aerosol gas distribution device is a circular hollow structure, a straight pipe with an outer diameter of 1/4 inches is reserved as a connecting end of the aerosol inlet piece 1, the aerosol enters the electrical mobility classifier from a port, after the aerosol enters the internal structure of the aerosol inlet piece 1, the aerosol firstly passes through the triangular flow divider 2 to divide one air flow into three air flows to realize rapid gas distribution of the aerosol, wherein two air flows are passages between the triangular flow divider unit 2-2 and the turbulent vortex suppression unit 2-3 to ensure rapid guiding distribution of the air flow in the aerosol buffer zone 5; the middle path is along the direction of the central line and is positioned between the two triangular shunting units 2-2, so that certain aerosol distribution is ensured to be opposite to the aerosol inlet area.
Preferably, the sheath gas and aerosol spacer ring 3 and the aerosol inlet member 1 form an annular channel, which adds a part of resistance to aerosol airflow, so that after the aerosol passes through the aerosol buffer zone 5, the airflow is distributed more uniformly in the slit area of the aerosol annular channel 6.
Preferably, the outer wall of the turbulent vortex suppression unit 2-3 abuts against the inner circular wall of the aerosol inlet 1 to avoid the velocity shear of the aerosol passing through the triangular splitter 2 to form turbulent vortices, resulting in particle loss.
Preferably, the sheath gas and aerosol spacing ring 3 and the aerosol inlet piece 1 are coaxially arranged, and the triangular splitter 2 and the aerosol inlet piece 1 are coaxially arranged.
The aerosol electric mobility classifier constructed based on the aerosol gas distribution device further comprises an inner electrode 4, a laminar flow sheath gas area 7, a sheath gas and aerosol convergence area 8, an outer electrode 9 and a particle screening area 10.
The inner electrode 4 and the sheath gas and aerosol spacer ring 3 are coaxially arranged, the top and the bottom of the inner electrode are fixed through Teflon, the area formed by the inner electrode 4 and the sheath gas and aerosol spacer ring 3 is a laminar sheath gas area 7, the outer area of the sheath gas and aerosol spacer ring 3 is an aerosol annular channel 6, and the inner area of the sheath gas and aerosol spacer ring 3 is a laminar sheath gas area 7;
after all particles of the sheath gas flow are removed by the high-efficiency filter, the sheath gas flow is changed into laminar flow by the double-layer nylon membrane and then enters the region to flow from top to bottom, a certain chamfer is formed at the tail end of the sheath gas and aerosol spacing ring 3, so that the aerosol and the sheath gas can be stably converged, and the region is a convergence region 8 of the sheath gas and the aerosol and enters a particle screening region 10.
Preferably, the inner part and the outer part of the particle sieving zone 10 are respectively an inner electrode 4 and an outer electrode 9, and the inner electrode 4 and the outer electrode 9 are both polished; meanwhile, positive high voltage or negative high voltage is applied to the inner electrode 4, the outer electrode 9 is grounded, a uniform electric field is formed inside, under the combined action of the electric field and the flow field, the purpose of screening particles with certain specific electric mobility particle size is achieved by fixing screening voltage, screening of particles with different particle sizes is achieved by changing the voltage application mode, the quantity and concentration of the particles are detected by downstream, and the purpose of particle size spectrum measurement of the particles is achieved.
The present invention will be described in further detail below with reference to the accompanying drawings, which illustrate preferred embodiments of the present invention.
Fig. 3 shows an electrical mobility classifier based on the aerosol gas distribution device, which includes an aerosol inlet 1, a triangular splitter 2, a sheath gas and aerosol spacer ring 3, an inner electrode 4, an aerosol buffer zone 5, an aerosol annular channel 6, a laminar flow sheath gas zone 7, a sheath gas and aerosol convergence zone 8, an outer electrode 9, and a particulate matter sieving zone 10.
Triangle-shaped shunt 2 is fixed a position through the locating pin of shunt ring 2-1 and is placed with aerosol inlet 1, carries out sealing connection through the side sealing washer between sheath gas and the aerosol spacer ring 3 and the aerosol inlet 1, and when compressing tightly sheath gas and aerosol spacer ring 3, the triangle-shaped shunt 2 was realized to the extrusion of sheath gas and aerosol spacer ring 3 and triangle-shaped shunt 2 simultaneously. After the fixing, two part areas are formed between the aerosol inlet piece 1 and the sheath gas and aerosol spacing ring 3, an aerosol buffer area 5 is arranged above the splitter ring 2-1, and an aerosol annular channel 6 is arranged below the splitter ring 2-1. Wherein, the sheath gas is coaxial with the aerosol spacing ring 3 and the aerosol inlet piece 1, and the triangular splitter 2 is coaxial with the aerosol inlet piece 1.
The outer part of the particle sieving area 10 is an outer electrode 9, the inner part is an inner electrode 4, and both the outer electrode and the inner electrode are polished; meanwhile, positive high voltage or negative high voltage is applied to the inner electrode 4, the outer electrode 9 is grounded, a uniform electric field is formed inside, under the combined action of the electric field and the flow field, the purpose of screening particles with certain specific electric mobility particle size can be achieved by fixing screening voltage, screening of particles with different particle sizes is achieved by changing the voltage application mode, such as an exponential scanning voltage mode or a step voltage changing mode, downstream can detect the number concentration of the particles, and further the purpose of particle size spectrum measurement of the particles is achieved.
Differential electric mobility classificator based on this aerosol gas distribution device preparation adopts the mode of series connection differential electric mobility classificator to measure the transmission equation, keeps the polydisperse particulate matter number concentration that takes place most upstream to be in steady state, wherein, the sheath gas flow that two-stage differential electric mobility classificator adopted is 10L/min, and the aerosol flow is 1.0L/min, and the fixed particulate matter of sieving a certain particle size of first differential electric mobility classificator (sieving particle size is 120nm in this example), and the electric mobility that this particle size corresponds is
Number concentration N of the screened particles1Scanning and measuring the particles screened out by the first differential electric mobility classifier by a second differential electric mobility classifier, wherein the electric mobility corresponding to each particle size point in the scanning process is ZPCorresponding number concentration of N2By adopting least square fitting, the height of a transmission equation is 1.0, the half-width is 0.102, and the height is very close to the height of a theoretical value of 1.0, and the half-width is 0.1. In fig. 4, gray points are theoretical values, and black points are actual measured values.
Finally, it should be pointed out that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. An aerosol gas distribution device of an electric mobility classifier, which is suitable for a cylindrical coaxial type aerosol electric mobility classifier, comprises an aerosol inlet piece (1), a triangular flow divider (2) and a sheath gas and aerosol spacing ring (3), and is characterized in that,
the aerosol inlet piece (1) is a peripheral cavity of the aerosol gas distribution device;
the triangular flow divider (2) is an aerosol airflow guide module and realizes annular guide of airflow;
the sheath gas and aerosol spacing ring (3) is used for converting aerosol airflow into laminar flow with uniformly distributed circumference.
2. The aerosol gas distribution device of the electromigration classifier according to claim 1, wherein the triangular splitter (2) is an integrally processed left-right symmetrical structure comprising a splitter ring (2-1), a triangular splitter unit (2-2) and a turbulent vortex suppression unit (2-3),
the triangular flow dividing unit (2-2) and the turbulent vortex suppression unit (2-3) are positioned on the flow divider circular ring (2-1) and are symmetrically distributed along the center line of an aerosol inlet in the left-right direction;
triangle-shaped shunt (2) pass through the locating pin of shunt ring (2-1) is fixed a position with aerosol inlet member (1) and is placed, sheath gas and aerosol spacer ring (3) with carry out sealing connection through the side sealing washer between aerosol inlet member (1), compress tightly sheath gas and aerosol spacer ring (3) the time, sheath gas and aerosol spacer ring (3) with triangle-shaped shunt (2) are extruded and have been realized the fixed of triangle-shaped shunt (2), fixed back aerosol inlet member (1) with two parts are regional in the middle of sheath gas and aerosol spacer ring (3), are aerosol buffer (5) above shunt ring (2-1), are aerosol annular channel (6) below shunt ring (2-1).
3. The aerosol distribution device of the electromobility classifier as claimed in claim 2, wherein the inside of the aerosol distribution device is a circular hollow structure, a straight pipe with an outer diameter of 1/4 inches is arranged at a side edge of the aerosol distribution device as a connecting end of the aerosol inlet member (1), the aerosol enters the electromobility classifier from the end opening, after the aerosol enters the internal structure of the aerosol inlet member (1), the aerosol firstly passes through the triangular splitter (2) to divide one air flow into three air flows to realize rapid aerosol distribution, wherein the two air flows are channels between the triangular splitter unit (2-2) and the turbulent vortex suppression unit (2-3) to ensure rapid guiding and distribution of the air flow in the aerosol buffer zone (5); the middle path is along the direction of the central line and is positioned between the two triangular shunting units (2-2), and certain aerosol distribution is ensured to be opposite to the aerosol inlet area.
4. An aerosol generating device according to claim 3, wherein the sheath gas and aerosol spacer ring (3) forms an annular channel with the aerosol inlet member (1) to add a portion of the resistance to the aerosol flow, so that the aerosol after passing through the aerosol buffer zone (5) has a more uniform distribution of the aerosol in the slit area of the aerosol annular channel (6).
5. The aerosol gassing device of an electromigration classifier according to claim 4, wherein the turbulence suppression unit (2-3) outer wall abuts against the inner circular inner wall of the aerosol inlet piece (1), avoiding the velocity shear of the aerosol passing through the triangular splitter (2) to form turbulent vortices, resulting in particle loss.
6. An aerosol dispensing device of an electro-mobility classifier according to claim 5, wherein the sheath gas is arranged coaxially with the aerosol spacer ring (3) and the aerosol inlet piece (1), and the triangular flow splitter (2) is arranged coaxially with the aerosol inlet piece (1).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212279873U (en) * | 2020-01-06 | 2021-01-05 | 深圳市合元科技有限公司 | Atomizing device and electronic cigarette comprising same |
| CN113504164A (en) * | 2021-06-09 | 2021-10-15 | 青岛众瑞智能仪器股份有限公司 | Sheath flow device and aerosol photometer |
| CN113567194A (en) * | 2021-07-15 | 2021-10-29 | 广东环凯生物科技有限公司 | Concentrated sampling head and concentrated sample thief of microorganism aerosol are gathered to cyclone |
| CN215574088U (en) * | 2021-05-18 | 2022-01-18 | 中国计量大学 | Aerosol separator based on electric mobility |
| CN215655007U (en) * | 2021-07-02 | 2022-01-28 | 北京九州鹏跃科技有限公司 | Aerosol mixing device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212279873U (en) * | 2020-01-06 | 2021-01-05 | 深圳市合元科技有限公司 | Atomizing device and electronic cigarette comprising same |
| CN215574088U (en) * | 2021-05-18 | 2022-01-18 | 中国计量大学 | Aerosol separator based on electric mobility |
| CN113504164A (en) * | 2021-06-09 | 2021-10-15 | 青岛众瑞智能仪器股份有限公司 | Sheath flow device and aerosol photometer |
| CN215655007U (en) * | 2021-07-02 | 2022-01-28 | 北京九州鹏跃科技有限公司 | Aerosol mixing device |
| CN113567194A (en) * | 2021-07-15 | 2021-10-29 | 广东环凯生物科技有限公司 | Concentrated sampling head and concentrated sample thief of microorganism aerosol are gathered to cyclone |
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