CN106289936A - Aerosol enrichment method system - Google Patents
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- CN106289936A CN106289936A CN201510273407.6A CN201510273407A CN106289936A CN 106289936 A CN106289936 A CN 106289936A CN 201510273407 A CN201510273407 A CN 201510273407A CN 106289936 A CN106289936 A CN 106289936A
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Abstract
The invention discloses a kind of aerosol enrichment method system, including impact sickle, be configured to receive air-flow, and remove in air-flow aerodynamic equivalent diameter at least in part more than the particulate matter of the first preset value；Water bath device, is configured to receive the air-flow from impact sickle, so that the steam that produces with water bath device of air-flow from impact sickle mixes；At least one refrigerating plant, each refrigerating plant is configured to receive the mixed airflow from water bath device, so that the equivalent aerodynamic diameter of at least part of particulate matter rises to more than or equal to the second preset value in mixed airflow；With at least one concentrating and separating device, each concentrating and separating device is configured to receive the air-flow from a refrigerating plant, and the airflow diversion from this refrigerating plant becomes the first air-flow and the second air-flow, and make what aerodynamic equivalent diameter in the air-flow of this refrigerating plant rose to all particulates more than or equal to the second preset value to be positioned partially or entirely in the first air-flow.
Description
Technical field
The invention belongs to improve the concentration technical field of the small particle in air-flow, particularly relate to a kind of aerosol enrichment method system.
Background technology
Along with the waste gas of socioeconomic development and the raising of people's living standard, factory and motor vehicle emission gets more and more, easily making air muddy, the visual field obscures and causes visibility deterioration, thus haze weather occurs.Haze mainly bySulfur dioxide、Nitrogen oxidesWith these three compositions of pellet, they combine with fog, allowSkyMoment becomes the most gloomy.Sulfur dioxide、Nitrogen oxidesFor gaseous contaminant, pellet is only and increases the weight of the arch-criminal that haze weather is polluted.The english abbreviation of particulate matter is
PM
, what Beijing was monitored is
PM2.5
, namely equivalent aerodynamic diameter is less than or equal to
2.5
The contaminant particle of micron.This granule itself is a kind of pollutant, is againHeavy metal、Polycyclic aromatic hydrocarbonIn the carrier of noxious substance, if these particulate matters of absorption of human body, it will the injury causing human body is unknown, and therefore in research air, the potential danger of contaminant particle is imperative.
In order to study the hazardness of contaminant particle, generally make animal absorb these contaminant particles, observe the reflection of animal and animal is carried out dissection etc. understand the hazardness of the particulate matter in haze.But, these particulate matters concentration in an atmosphere is relatively low, if being directly used in zoopery, the cycle of needs is long, and effect is the most obvious.The most effectively gather in air
PM2.5
Microgranule, and by air
PM2.5
Microgranule is applied to animal mouth and nose or systemic exposure experiment is technical problem urgently to be resolved hurrily.
Summary of the invention
The purpose of the present invention aims to provide a kind of aerosol enrichment method system, it is possible to gather in air-flow aerodynamic equivalent diameter at certain value particles below thing, and can improve the concentration of these particulate matters, so that the small particle in air is carried out enrichment method.
To this end, the invention provides a kind of aerosol enrichment method system, this aerosol enrichment method system comprises the steps that
Impact sickle, is configured to receive air-flow, and removes the particulate matter more than the first preset value of aerodynamic equivalent diameter in described air-flow at least in part；
Water bath device, is configured to receive from the air-flow of described impact sickle, so that the steam produced with described water bath device from the air-flow of described impact sickle mixes；
At least one refrigerating plant, each described refrigerating plant is configured to receive from the mixed airflow of described water bath device and reduces the temperature of described mixed airflow, so that the equivalent aerodynamic diameter of at least part of particulate matter rises to more than or equal to the second preset value in described mixed airflow；With
At least one concentrating and separating device, each described concentrating and separating device is configured to receive the air-flow from a described refrigerating plant, and the airflow diversion from this refrigerating plant is become the first air-flow and the second air-flow, and make in the air-flow of this refrigerating plant, equivalent aerodynamic diameter rises to being positioned partially or entirely in described first air-flow more than or equal to all particulates of the second preset value.
Further, described aerosol enrichment method system also includes: drying device, is configured to receive and be dried described first air-flow from least one concentrating and separating device described.
Further, described aerosol enrichment method system also includes: the first air pump, is configured to aspirate described first air-flow from described drying device；With the second air pump, it is configured to aspirate described second air-flow from least one concentrating and separating device described.
Further, described aerosol enrichment method system also includes: first flow controller, is arranged on the air inlet pipeline of described first air pump；With second flow controller, it is arranged on the air inlet pipeline of described second air pump.
Further, each described refrigerating plant includes outer tube and the inner tube extended in described outer tube, the two ends of said inner tube concentrating and separating device described with described water bath device and respectively connects, and the passage limited between described outer tube wall and said inner tube outer wall is for passing the flowing of cold medium.
Further, described water bath device includes: water bath, and it has top cover, and each described refrigerating plant is installed on described top cover vertically, and the inner tube of each described refrigerating plant connects with the internal cavities of described water bath；And heater, it is configured to heat the water in described water bath.
Further, each described concentrating and separating device includes one or more Virtual cropping device, each described Virtual cropping utensil has the first air stream outlet of each described Virtual cropping device in airflow inlet, the first air stream outlet and the second air stream outlet, and the plurality of Virtual cropping device to connect with the airflow inlet of the described Virtual cropping device being adjacent to downstream.
Further, each described Virtual cropping device includes:
Housing, defines receiving cavity in it, it offers described second air stream outlet and discharge outlet；
First jet, stretches into described receiving cavity, and its one end is described airflow inlet, and the gas channel that at least part of pipeline section of described first jet limits is gradually reduced along the direction of air flow direction in it；With
Second nozzle, it is at least partially disposed in described receiving cavity, and with described first jet coaxial spaced arrange, one end away from described first jet of described second nozzle is described first air stream outlet, and the gas channel that at least part of pipeline section of described second nozzle limits gradually expands along the direction of air flow direction in it.
Further, described refrigerating plant and described concentrating and separating device are
5
Individual；And
Described aerosol enrichment method system also includes that five in one catcher, described five in one catcher have five catcher imports connected with the first air stream outlet of a described concentrating and separating device respectively and export for discharging the catcher of described first air-flow with one.
Further, define in described drying device for the first passage by described first air-flow with for the second channel by dry gas, so that described first air-flow is dried by described dry gas；And
Described aerosol enrichment method system also includes the 3rd flow controller, is configured to regulate the flow of described dry gas, so that described first air-flow from the outflow of described aerosol enrichment method system has predetermined humidity value.
The aerosol enrichment method system of the present invention, because the small particle in air can be made to grow up, effectively to be separated with fraction air-flow by the small particle in air, significantly improves the concentration of small particle.And, the small particle after these can be grown up by the aerosol enrichment method system of the present invention is dried, so that the small particle after these are grown up restores to the original state, reaches the particle diameter distribution identical with in air.
It is right that the aerosol enrichment method system of the present invention is particularly well-suited to
PM2.5
The concentration of microgranule is collected, and significantly improves
PM2.5
The concentration of microgranule, in order in research air
PM2.5
The microgranule extent of injury to human body.
Accompanying drawing explanation
Describe some specific embodiments of the present invention the most by way of example, and not by way of limitation in detail.Reference identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that what these accompanying drawings were not necessarily drawn to scale.In accompanying drawing:
Figure
1
Schematic diagram for the aerosol enrichment method system according to one embodiment of the invention；
Figure
2
Schematic partial structurtes sectional view for the aerosol enrichment method system according to one embodiment of the invention；
Figure
3
For figure
2
Shown in
A
The schematic partial enlarged view at place.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing, specific embodiment is described in detail.
Figure
1
For the schematic diagram of the aerosol enrichment method system according to one embodiment of the invention, such as figure
1
Shown in, embodiments provide a kind of aerosol enrichment method system.This aerosol enrichment method system includes impacting sickle
100
, water bath device
200
, at least one refrigerating plant
300
With at least one concentrating and separating device
400
。
Specifically, impact sickle
100
It is configured to receive air-flow, and removes in air-flow aerodynamic equivalent diameter at least in part more than the particulate matter of the first preset value.Water bath device
200
It is configured to receive from impact sickle
100
Air-flow so that from impact sickle
100
Air-flow and water bath device
200
The steam mixing produced, can make air-flow heat up simultaneously.Each refrigerating plant
300
It is configured to receive from water bath device
200
Mixed airflow and reduce the temperature of this mixed airflow, so that the equivalent aerodynamic diameter of at least part of particulate matter rises to more than or equal to the second preset value in mixed airflow.That is water bath device
200
And refrigerating plant
300
The particulate matter tuberculosis in mixed airflow can be made to grow up.
Each concentrating and separating device
400
It is configured to receive from a refrigerating plant
300
Air-flow, and will be from this refrigerating plant
300
Airflow diversion become the first air-flow and the second air-flow.Especially, each concentrating and separating device
400
Can make from the refrigerating plant being connected
300
Air-flow in, equivalent aerodynamic diameter rise to being positioned partially or entirely in described first air-flow more than or equal to all particulates of the second preset value.Here the part said refers to most of, whole
85%
.At this point, it should be noted that described first air-flow is likely to include that a small amount of, equivalent aerodynamic diameter rises to the particulate matter less than the second preset value.Each concentrating and separating device
400
Also make from the refrigerating plant being connected simultaneously
300
Air-flow in, equivalent aerodynamic diameter increase being positioned partially or entirely in described second air-flow of all particulates less than the second preset value.The most each concentrating and separating device
400
The important function separating equivalent aerodynamic diameter is played in whole aerosol enrichment method system.
Further, the particulate matter in order to make tuberculosis grow up recovers original equivalent aerodynamic diameter, and the aerosol enrichment method system in the embodiment of the present invention may also include drying device
500
, it is configured to receive and be dried from least one concentrating and separating device described
400
The first air-flow.In certain embodiments, define in this drying device for the first passage by described first air-flow with for the second channel by dry gas, so that described first air-flow is dried by described dry gas.Such as, this drying device
500
Can include defining dry place drying tube and
Nafion
Barrier film.
Nafion
Barrier film is also referred to as permeable hermetically sealable film, is configured to be divided into dry place for by the first passage of the first air-flow be used for the second channel by dry gas.Dry gas stream and the reverse flow in described dry place of the first air-flow, to improve drying efficiency.Further, this drying device
500
May also comprise vacuum pump, its import and the outlet of second channel, flow in second channel so that being dried gas.In order to improve drying efficiency further, this drying device may also comprise heater, is arranged on the upstream of the second channel of drying tube.In order to prevent the first air-flow flowing out drying device to be unlikely to over-drying, the aerosol enrichment method system of the embodiment of the present invention may also include the 3rd flow controller, it is configured to regulate the flow of dry gas, so that the first air-flow from the outflow of aerosol enrichment method system has predetermined humidity value.In some alternate embodiment, drying device can include drying tube and be positioned at the desiccant of drying tube, and desiccant can be made tubular structure, so that the first air-flow flows through in the center through hole of tubular desiccant.
In some embodiments of the invention, aerosol enrichment method system may also include two air pumps, such as the first air pump
610
With the second air pump
620
.First air pump
610
Import and drying device
500
For flow out the first air-flow outlet, with from drying device
500
Middle suction the first air-flow.Second air pump
620
Import and concentrating and separating device
400
For flow out the second air-flow outlet, with from least one concentrating and separating device
400
Middle suction the second air-flow.First air pump
610
With the second air pump
620
Power is provided for whole system.Further, can be respectively at the first air pump
610
With the second air pump
620
Air inlet pipeline on first flow controller is set
810
With second flow controller
820
, to control the first air-flow and the flow of the second air-flow.
In the aerosol enrichment method system of the present invention, such as, the first preset value can be made to be more than the second preset value, as the first preset value is
4
Micron, the second preset value is
2.5
Micron, by impact sickle
100
Aerodynamic equivalent diameter in original flow is more than
4
The particulate matter of micron is removed.Water bath device
200
With at least one refrigerating plant
300
Remaining particulate matter tuberculosis in air-flow can be made to grow up, and the equivalent aerodynamic diameter of part or all of particulate matter rises to be more than or equal to
2.5
Micron.At least one concentrating and separating device
400
Make from least one refrigerating plant
300
Air-flow in, equivalent aerodynamic diameter rise to being positioned partially or entirely in the first air-flow of all particulates more than or equal to the second preset value, concentrated by enrichment.It is to say, aerodynamic equivalent diameter in original flow can be existed by the aerosol enrichment method system of the present invention
4
The following particulate matter enrichment method of micron.
The most such as, the first preset value can be made to be equal to the second preset value, as the first preset value is
2.5
Micron, the second preset value is
2.5
Micron, by impact sickle
100
Aerodynamic equivalent diameter in original flow is more than
2.5
The particulate matter of micron is removed.Water bath device
200
With at least one refrigerating plant
300
Remaining particulate matter tuberculosis in air-flow can be made to grow up, and the equivalent aerodynamic diameter of part or all of particulate matter rises to be more than or equal to
2.5
Micron.At least one concentrating and separating device
400
Make from least one refrigerating plant
300
Air-flow in, equivalent aerodynamic diameter rise to being positioned partially or entirely in the first air-flow of all particulates more than or equal to the second preset value, concentrated by enrichment.It is to say, aerodynamic equivalent diameter in original flow can be existed by the aerosol enrichment method system of the present invention
2.5
Micron particles below thing enrichment method, significantly improves the accuracy that the small particle in original flow carries out enrichment method.
The aerosol enrichment method system of the embodiment of the present invention is mainly used in and the small particle in air is carried out enrichment method, so that the particulate matter after enrichment method is applied in zoopery, and the extent of injury of the small particle in observation air.Here, the work process of this aerosol enrichment method system is just described as a example by air.Specific as follows:
Open the first air pump
610
With the second air pump
620
, make protoatmosphere with
1000L/min
Flow enter at a high speed impact sickle
100
In, by impact sickle
100
After effect by equivalent aerodynamic diameter more than the first preset value (as
2.5
Micron) particulate matter remove or filter, only stay equivalent aerodynamic diameter less than or equal to the particulate matter of the first preset value, as
PM2.5
Microgranule,
PM2.5
Microgranule is at water bath device
200
Inside fully absorb moisture, then at refrigerating plant
300
After cooled, particulate matter tuberculosis is grown up, now major part
PM2.5
The equivalent aerodynamic diameter of microgranule can increase
3
Extremely
4
Between Wei meter.Through concentrating and separating device
400
Separation, can by be practically free of the large quantity of air of microgranule with
980L/min
Flow discharge, will second air-flow discharge；Contain
PM2.5
The low discharge air of microgranule, the i.e. first air-flow, with
20L/min
Flow enter drying device
500
After be dried, after growing up
PM2.5
Particulate reduction is original size.Due to through concentrating and separating device
400
After, contain almost all in air
PM2.5
The air flow rate of microgranule reduces, even if
PM2.5
The concentration of microgranule increases, and reaches the effect that enrichment concentrates, in order to animal mouth and nose expose experiment, systemic exposure experiment etc..
Figure
2
Schematic partial structurtes sectional view for the aerosol enrichment method system according to one embodiment of the invention；Figure
3
For figure
2
Shown in
A
The schematic partial enlarged view at place.Such as figure
2
And figure
3
Shown in, the impact sickle in the embodiment of the present invention
100
Can include impacting sickle shell
110
, there is the resistance worm gauze cover of gauze
120
, first jet plate
130
, the first entrapment plate
140
, second nozzle plate
150
With the second entrapment plate
160
.Impact sickle
100
Shell has top stream import and bottom airflow outlet.Resistance worm gauze cover
120
It is installed on impact sickle
100
The top stream import of shell, protoatmosphere can enter impact sickle by the gauze of resistance worm gauze cover
100
In shell, resistance worm gauze cover is possible to prevent insecticide and the material such as blade of grass, willow catkins flying in the air to be inhaled into impact sickle
100
Gas circuit is blocked in shell.First jet plate
130
, the first entrapment plate
140
, second nozzle plate
150
With the second entrapment plate
160
It is respectively provided with one or more aperture, and is arranged to parallel interval impact sickle shell the most successively
110
In.
In embodiments of the present invention, impact sickle
100
Work process can be: protoatmosphere enter impact sickle
100
Time hindered worm gauze cover
120
Gauze intercept the impurity in air.Then from first jet plate
130
The ejection of multiple apertures, equivalent aerodynamic diameter is trapped in the first entrapment plate more than the particulate matter of the 3rd preset value
140
On.Air-flow moves on and from second nozzle plate
150
The ejection of multiple apertures, equivalent aerodynamic diameter is trapped in the second entrapment plate more than the particulate matter of the first preset value
160
On.Remaining air-flow flows out impact sickle from bottom airflow outlet
100
, to enter water bath device
200
.In embodiments of the present invention, the first preset value can be
2.5
Micron, the 3rd preset value can be
10
Micron.In some alternate embodiment of the present invention, this impact sickle
100
Also a nozzle plate and an entrapment plate can be only included.Certainly, in other alternate embodiment, this impact sickle
100
The quantity of middle nozzle plate and entrapment plate can be respectively three or more than three.
In some embodiments of the invention, each concentrating and separating device
400
Including one or more Virtual cropping devices
410
；Each Virtual cropping device
410
There is airflow inlet, the first air stream outlet and the second air stream outlet.When Virtual cropping device
410
Quantity when being multiple, the first air stream outlet of Virtual cropping device being in upstream in two the most adjacent Virtual cropping devices connects with the airflow inlet of another Virtual cropping device, it is to say, the first air stream outlet of each Virtual cropping device connects with the airflow inlet of the Virtual cropping device being adjacent to downstream in multiple Virtual cropping devices.
Such as figure
3
Shown in, each Virtual cropping device
410
Housing can be included
411
, first jet
412
And second nozzle
413
.Housing
411
Inside define receiving cavity, housing
411
On offer the second air stream outlet.First jet
412
Stretching into receiving cavity, its one end is airflow inlet, and first jet
412
The gas channel that limits of at least part of pipeline section be gradually reduced along the direction of air flow direction in it.Second nozzle
413
Be at least partially disposed in receiving cavity, and and first jet
412
Coaxial spaced ground is arranged, second nozzle
413
Away from first jet
412
One end be the first air stream outlet, and second nozzle
413
The gas channel that limits of at least part of pipeline section gradually expand along the direction of air flow direction in it.
Each Virtual cropping device
410
Work process can be: air-flow enter each Virtual cropping device
410
After, the microgranule that equivalent aerodynamic is relatively large in diameter can enter second nozzle along with the first air-flow due to inertia
413
In.Again due to first jet
412
Outlet and second nozzle
413
Entrance between the airspace that reserves, the second air-flow and the less microgranule of its equivalent aerodynamic diameter carried flow out from this airspace.In embodiments of the present invention, the second preset value is alternatively
2.5
Micron.
In some embodiments of the invention, for the ease of each described Virtual cropping device
410
Housing in the discharge of moisture of gathering, housing
411
On be further opened with discharge outlet, discharge outlet can install a drain pipe
414
。
In some embodiments of the invention, each refrigerating plant
300
Outer tube can be included
310
With at outer tube
310
Inside prolong
The inner tube stretched
320
, inner tube
320
Two ends respectively with water bath device
200
With a concentrating and separating device
400
Connection, outer tube
310
Inwall and inner tube
320
The passage limited between outer wall is for passing the flowing of cold medium.Further, the aerosol enrichment method system of the embodiment of the present invention has a total refrigerating plant
900
, refrigerating plant
900
For providing biography cold medium.Work as refrigerating plant
300
Quantity when being multiple, refrigerating plant
900
The cold medium of biography provided can split into multichannel, simultaneously flows through each refrigerating plant
300
, to inner tube
320
After interior air-flow cooling, flow back to refrigerating plant
900
.Alternatively, refrigerating plant
900
Biography cold medium Ke Wei mono-tunnel provided, flows through multiple refrigerating plant successively
300
After, to each inner tube
320
After interior air-flow cools down successively, flowing back to refrigerating plant
900
.Passing cold medium can be that saline, anti-icing fluid or other freezing pointes are less than
-10
DEG C solution etc..In the accompanying drawing of the embodiment of the present invention, refrigerating plant
900
With each refrigerating plant
300
Between pipeline not shown.
In some embodiments of the invention, in order to ensure the refrigerating effect of refrigerating plant, the outer tube of each refrigerating plant
410
Periphery wall on heat-insulation layer can be set
330
。
In some embodiments of the invention, such as figure
2
Shown in, water bath device
200
Water bath can be included
210
And heater
220
.Water bath
210
It has top cover
211
.Each refrigerating plant
300
It is installed on top cover vertically
211
, and each refrigerating plant
300
Inner tube
320
With water bath
210
Internal cavities connection.Heater
220
It is configured to heated water bath case
210
Interior water.Heater
220
Can be electrically heated rod, be arranged at water bath
210
In.
In some embodiments of the invention, each concentrating and separating device
400
May be provided at a corresponding refrigerating plant
300
Top.Each concentrating and separating device
400
Airflow inlet and refrigerating plant
300
Inner tube
320
It is coaxially disposed, and and inner tube
320
Upper end open fixing connect.Further, refrigerating plant
300
With concentrating and separating device
400
Can be
5
Individual.Aerosol enrichment method system also includes five in one catcher
710
, five in one catcher
710
Have five respectively with a concentrating and separating device
400
First air stream outlet connection catcher import and with one for discharge the first air-flow catcher outlet.Aerosol enrichment method system may also include All-in-One catcher
720
, this All-in-One catcher
720
Have multiple respectively with a Virtual cropping device
410
Second air stream outlet connection catcher import and with one for discharge the second air-flow catcher outlet.
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art, under the premise without departing from the principles of the invention, and any improvements and modifications made also should be regarded as protection scope of the present invention.
Claims (10)
1. an aerosol enrichment method system, it is characterised in that including:
Impact sickle, is configured to receive air-flow, and removes the particulate matter more than the first preset value of aerodynamic equivalent diameter in described air-flow at least in part；
Water bath device, is configured to receive from the air-flow of described impact sickle, so that the steam produced with described water bath device from the air-flow of described impact sickle mixes；
At least one refrigerating plant, each described refrigerating plant is configured to receive from the mixed airflow of described water bath device and reduces the temperature of described mixed airflow, so that the equivalent aerodynamic diameter of at least part of particulate matter rises to more than or equal to the second preset value in described mixed airflow；With
At least one concentrating and separating device, each described concentrating and separating device is configured to receive the air-flow from a described refrigerating plant, and the airflow diversion from this refrigerating plant is become the first air-flow and the second air-flow, and make in the air-flow of this refrigerating plant, equivalent aerodynamic diameter rises to being positioned partially or entirely in described first air-flow more than or equal to all particulates of the second preset value.
Aerosol enrichment method system the most according to claim 1, it is characterised in that also include:
Drying device, is configured to receive and be dried described first air-flow from least one concentrating and separating device described.
Aerosol enrichment method system the most according to claim 2, it is characterised in that also include:
First air pump, is configured to aspirate described first air-flow from described drying device；With
Second air pump, is configured to aspirate described second air-flow from least one concentrating and separating device described.
Aerosol enrichment method system the most according to claim 3, it is characterised in that also include:
First flow controller, is arranged on the air inlet pipeline of described first air pump；With
Second flow controller, is arranged on the air inlet pipeline of described second air pump.
Aerosol enrichment method system the most according to claim 1, it is characterised in that
Each described refrigerating plant includes outer tube and the inner tube extended in described outer tube, the two ends of said inner tube concentrating and separating device described with described water bath device and respectively connects, and the passage limited between described outer tube wall and said inner tube outer wall is for passing the flowing of cold medium.
Aerosol enrichment method system the most according to claim 5, it is characterised in that described water bath device includes:
Water bath, it has top cover, and each described refrigerating plant is installed on described top cover vertically, and the inner tube of each described refrigerating plant connects with the internal cavities of described water bath；With
Heater, is configured to heat the water in described water bath.
Aerosol enrichment method system the most according to claim 1, it is characterised in that
Each described concentrating and separating device includes one or more Virtual cropping device, each described Virtual cropping utensil has the first air stream outlet of each described Virtual cropping device in airflow inlet, the first air stream outlet and the second air stream outlet, and the plurality of Virtual cropping device to connect with the airflow inlet of the described Virtual cropping device being adjacent to downstream.
Aerosol enrichment method system the most according to claim 7, it is characterised in that each described Virtual cropping device includes:
Housing, defines receiving cavity in it, it offers described second air stream outlet and discharge outlet；
First jet, stretches into described receiving cavity, and its one end is described airflow inlet, and the gas channel that at least part of pipeline section of described first jet limits is gradually reduced along the direction of air flow direction in it；With
Second nozzle, it is at least partially disposed in described receiving cavity, and with described first jet coaxial spaced arrange, one end away from described first jet of described second nozzle is described first air stream outlet, and the gas channel that at least part of pipeline section of described second nozzle limits gradually expands along the direction of air flow direction in it.
Aerosol enrichment method system the most according to claim 1, it is characterised in that
Described refrigerating plant and described concentrating and separating device are 5；And
Described aerosol enrichment method system also includes that five in one catcher, described five in one catcher have five catcher imports connected with the first air stream outlet of a described concentrating and separating device respectively and export for discharging the catcher of described first air-flow with one.
Aerosol enrichment method system the most according to claim 2, it is characterised in that
Define in described drying device for the first passage by described first air-flow with for the second channel by dry gas, so that described first air-flow is dried by described dry gas；And
Described aerosol enrichment method system also includes the 3rd flow controller, is configured to regulate the flow of described dry gas, so that described first air-flow from the outflow of described aerosol enrichment method system has predetermined humidity value.
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Cited By (4)
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| CN111855375A (en) * | 2020-07-26 | 2020-10-30 | 复旦大学 | Online concentration and collection device and method for atmospheric fine particles |
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