Submicron particulate matter collecting device, collecting system and collecting method

Abstract

The invention discloses a submicron particulate matter collecting device, system and method, the submicron particulate matter collecting device is provided with a target gas inlet, a first collecting net, a first collecting cavity and a first separator, particulate matter of different particle sizes can be efficiently separated and collected, first target gas is introduced through the target gas inlet, and second target gas is introduced through the first separator; the first target gas contains a first particulate matter, a second particulate matter and a third particulate matter. Wherein the first collecting net intercepts the first particulate matters, so that the subsequent effective separation of the second particulate matters and the third particulate matters is ensured, and then countercurrent airflow can be continuously generated through the first separator, so that the second particulate matters and the third particulate matters are separated to facilitate subsequent collection. Particles with different particle sizes can be efficiently separated and collected, effective separation of the two kinds of particles is ensured, the separation process is completed under the condition that physical impact is not needed, and therefore the problems of particle breaking and rebounding possibly occurring in a traditional impactor are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of particle collection, and in particular relates to a submicron particle collection device, a collection system and a collection method. Background Art

[0002] The droplets in the cloud and fog air mass go through three stages: condensation, collision, and sedimentation. In the condensation stage, the cloud condensation nuclei absorb water to form droplets with a diameter of 1 to 20 microns. At this time, the pollutant concentration is proportional to the droplet diameter. Subsequently, small droplets collide with each other to form large droplets, and the pollutant concentration is inversely proportional to the droplet diameter. Finally, the droplets continue to grow and settle, and the relationship between the pollutant concentration and the droplet diameter is no longer significant. In patent CN115479808B, the collection technology for cloud droplets with a particle size of two to three microns or more is relatively mature.

[0003] On the one hand, aerosols act as condensation nuclei to form cloud droplets under supersaturated water vapor conditions. In the early stage of cloud droplet formation, the submicron cloud droplet size is mostly distributed in the particle size range of 1-2μm, mixed with interstitial aerosol particles of tens to hundreds of nm in the air; on the other hand, the current cloud water samplers, whether impact impactors or string impact principle machines, are limited by aerodynamic limitations and cannot effectively collect submicron cloud droplets in the particle size range of 1-2μm; Considering the above-mentioned technical difficulties, there is currently no effective way to collect submicron cloud droplets. Summary of the invention

[0004] Based on the technical problems existing in the prior art, the present invention provides a submicron particle collection device, a collection system and a collection method, which overcome the problems existing in the background technology.

[0005] According to a first aspect of the technical solution of the present invention, a submicron particle collection device is provided, which includes a target air inlet, a first collection net, a first collection chamber, a second collection chamber, and a first separator, wherein the first collection net can intercept first particles in a first target gas entering through the target air inlet, and second particles and third particles in the first target gas entering through the target air inlet can pass through the first collection net, and the size of the first particles is greater than the size of the second particles and the third particles, and the first collection chamber is arranged at one end of the first collection net, and the first particles intercepted by the first collection net can enter the first collection chamber under the action of gravity, and the second particles passing through the first collection net enter the second collection chamber; the first separator includes a first accommodating chamber, a first air inlet, a second accommodating chamber, a first turning portion, a first airflow generating device, and a second airflow generating device, the first air inlet is connected to the first accommodating chamber, the first turning portion is located between the first air inlet and the first accommodating chamber, the first airflow generating device is used to generate a first airflow, the first airflow generating device is connected to the first accommodating chamber, and the first airflow is used to make the second particles and the third particles enter the first accommodating chamber through the first air inlet, and the size of the second particles is greater than the size of the third particles.

[0006] Preferably, the second airflow generating device is used to generate a second airflow, and the second airflow generating device is connected to the first turning portion through the second accommodating chamber. The second airflow can suck the third particles entering the first accommodating chamber from the first turning portion into the second accommodating chamber, and the second airflow cannot suck the second particles entering the first accommodating chamber into the second accommodating chamber. The third particles in the first accommodating chamber are sucked into the second accommodating chamber, so that the first accommodating chamber contains the second particles but not the third particles.

[0007] Furthermore, the submicron particle collection device further includes a first air outlet, the first airflow generating device is connected to the first accommodating chamber through the first air outlet, the first airflow device is used to suck out the second particles in the first accommodating chamber, and the second particles enter the target device through the first air outlet; a growth environment device is arranged between the first air outlet and the target device; the growth environment device includes a temperature regulating device and a humidity regulating device, the temperature regulating device is used to maintain the submicron cloud droplets in the second particles at a target temperature, and the humidity regulating device is used to maintain the submicron cloud droplets in the second particles at a target humidity; the humidity regulating device includes a third accommodating chamber, The fourth storage chamber, the third storage chamber is used to store the second particles after passing through the first storage chamber, and the fourth storage chamber is used to store the second particles after passing through the third storage chamber. The third storage chamber and the fourth storage chamber both have water-retaining layers inside, and the water-retaining layers are used to maintain the humidity in the third storage chamber and the fourth storage chamber. The temperature regulating device is located outside the fourth storage chamber, and is used to control the temperature in the fourth storage chamber. The second particles pass through the third storage chamber and the fourth storage chamber in sequence, and the temperature difference between the third storage chamber and the fourth storage chamber is the target value. The temperature difference of the target value can make the submicron cloud droplets absorb water and grow into target particles, and the size of the target particles is larger than the size of the second particles. The first particles are cloud droplets with a particle size greater than 2-3 microns, and the second particles are submicron cloud droplets with a particle size less than 2-3 microns and greater than 1 micron; the third particles are particles with a particle size of 1 micron or less than 1 micron that have not activated nucleation.

[0008] Preferably, the growth environment device further includes a water storage device, the water retention layer has a water inlet and a water outlet, the water storage device is arranged outside the fourth containing chamber, and a water circulation device is provided between the water storage device and the water retention layer. The water circulation device is used to circulate the water in the water storage device through the water inlet of the water retention layer into the water retention layer, and the water outlet of the water retention layer is used to circulate the water in the water retention layer into the water storage device.

[0009] Preferably, the temperature regulating device includes a first temperature control layer and a second temperature control layer. The first temperature control layer is located outside the third accommodating cavity, and the second temperature control layer is located outside the fourth accommodating cavity. The first temperature control layer is used to control the temperature of the first temperature cavity, and the second temperature control layer is used to control the temperature in the second temperature cavity.

[0010] Preferably, the first temperature control layer is a constant temperature control layer, and the second temperature control layer is a refrigeration layer; the temperature difference of the target value is five to ten degrees Celsius; the target device includes a second collection net and a third collection chamber, the second collection net can intercept the target particles after passing through the growth environment device, and the third collection chamber is arranged at one end of the second collection net, and the target particles intercepted by the second collection net can enter the third collection chamber under the action of gravity.

[0011] According to a second aspect of the technical solution of the present invention, a submicron cloud droplet collection system is provided, and the submicron cloud droplet collection system includes the above-mentioned submicron particle collection device.

[0012] Preferably, the first airflow generating device is connected to the first float flowmeter, the airflow of the first airflow generating device is connected to the growth environment device through the first float flowmeter, the growth environment device is connected to the third accommodating chamber, the third accommodating chamber is connected to the first accommodating chamber of the first separator, a second airflow generating device is arranged outside the second accommodating chamber of the first separator, a second float flowmeter is provided between the second airflow generating device and the second accommodating chamber, the second airflow generating device is used to discharge the third particulate matter in the second accommodating chamber, the first air inlet of the first separator is connected to the second collecting chamber, the second collecting chamber includes a target air inlet, a first collecting net, a first collecting chamber, and a second collecting chamber; the water retaining layer is arranged on the outer layer of the growth environment device, the water retaining layer is connected to the second temperature control layer, the second temperature control layer is connected to a thermostat, a water storage device is provided between the growth environment device and the third accommodating chamber, a water circulation device is used to connect the water storage device, the water retaining layer and the third accommodating chamber, the growth environment device is also connected to the second collecting net, the second collecting net includes the target air inlet, the first collecting net and the third collecting chamber, the third collecting chamber is used to collect submicron cloud droplets grown in the growth environment device.

[0013] According to a third aspect of the technical solution of the present invention, a method for collecting submicron cloud droplets is provided, which uses the above-mentioned submicron cloud droplet collection system, and the method for collecting submicron cloud droplets comprises the following steps: Step S1, intercepting cloud droplets of a first size in the gas of the first cloud sampler by a first collecting net of the first cloud sampler to form a submicron cloud droplet collection bottle; Step S2, allowing submicron cloud droplets and small particles of a second size to enter the first cloud sampler through the first collection net, wherein the second size is smaller than the first size; Step S3, separating submicron cloud droplets of a second size from small particles by a first separator, wherein the size of the submicron cloud droplets is larger than the size of the small particles; Step S4, placing the submicron cloud droplets in an environment with target humidity and target temperature, so that the submicron cloud droplets grow in volume and then are collected.

[0014] Preferably, the submicron cloud droplets are placed in an environment of target humidity and target temperature so that the submicron cloud droplets grow in volume and then collected, which includes: Step S41, placing the submicron cloud droplets in a first environment with a first temperature and a first humidity for a first target time period; Step S42, placing the submicron cloud droplets that have been temporarily retained in the first environment for a target time into a second environment at a second temperature and a second humidity for a second target time to obtain grown submicron cloud droplets, wherein the second temperature is lower than the first temperature, the second humidity is the same as or different from the first humidity, and the second target time is the same as or different from the first target time.

[0015] Compared with the prior art, the submicron particle collection device, submicron cloud droplet collection system and submicron cloud droplet collection method provided by the present invention have the following beneficial effects: In the present invention, the submicron particle collection device can efficiently separate and collect particles of different particle sizes by setting a target air inlet, a first collection net, a first collection chamber and a first separator. In this process, the first target gas can be introduced through the target air inlet, and the first target gas contains first particles (such as large-sized particles), second particles (medium-sized particles) and third particles (small-sized particles). The first collection net intercepts the first particles (such as large-sized particles) to ensure the effective separation of the subsequent second particles and the third particles, and then a countercurrent airflow can be continuously generated through the first separator to separate the second particles (medium-sized particles) and the third particles (small-sized particles). Due to the inertia of the medium-sized particles, they cannot turn with the high-speed countercurrent airflow, so that they are effectively collected in the first accommodating chamber. At the same time, the second airflow generating device can inhale the smaller third particles through the second accommodating chamber to ensure the effective separation of the two particles. The separation process is completed without the need for physical impact, thereby avoiding the particle breakage and rebound problems that may occur in traditional impactors.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] Figure 1 is a schematic diagram of a submicron particle collection device according to an exemplary embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of a growth environment device according to an exemplary embodiment of the present invention.

[0020] Figure 3 is a schematic structural diagram of a first separator according to an exemplary embodiment of the present invention.

[0021] Figure 4Schematic diagram of the internal structure of a first separator according to an exemplary embodiment of the present invention.

[0022] Figure 5 It is a flow chart of a method for collecting submicron cloud droplets according to an exemplary embodiment of the present invention.

[0023] Figure 6 is a flow chart of a method for collecting submicron cloud droplets according to another exemplary embodiment of the present invention.

[0024] Description of reference numerals in the accompanying drawings: 1. a first airflow generating device; 2. a first float flowmeter; 3. a second collecting chamber; 4. a water circulation device; 5. a second airflow generating device; 6. a second float flowmeter; 7. a third containing chamber; 8. a second temperature control layer; 9. a temperature controller; 10. a growth environment device; 11. a water storage device; 12. a water retaining layer; 14. a first separator; 15. a first collecting chamber; 16. a third collecting chamber; 24. a first containing chamber; 25. a first air inlet; 26. a second containing chamber; 27. a first turning portion; 28. a second particle; 29. ​​a third particle; 30. a first air outlet; 31. a second air outlet; 101. a target air inlet; 102. a first collecting net; 103. a second collecting chamber; 105. a fourth containing chamber; 106. a first temperature control layer; 107. a second collecting net. DETAILED DESCRIPTION

[0025] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0026] At present, there is no effective way to collect submicron cloud droplets. In order to solve the above technical problems, according to the first aspect of the technical solution of the present invention, a submicron particle collection device is provided, which includes a target air inlet, a first collection net, a first collection chamber, a second collection chamber, and a first separator. The first collection net can intercept the first particles in the first target gas entering through the target air inlet, and the second particles and the third particles in the first target gas entering through the target air inlet can pass through the first collection net. The size of the first particles is larger than the size of the second particles and the third particles. The first collection chamber is arranged at one end of the first collection net. The first particles intercepted by the first collection net can enter the first collection chamber under the action of gravity, and the second particles passing through the first collection net enter the second collection chamber. The first separator includes a first accommodating chamber, a first air inlet, a second accommodating chamber, a first turning portion, and a first airflow generating device. A first air flow generating device and a second air flow generating device are arranged, the first air inlet is connected to the first accommodating chamber, the first turning portion is located between the first air inlet and the first accommodating chamber, the first air flow generating device is used to generate a first air flow, the first air flow generating device is connected to the first accommodating chamber, the first air flow is used to make the second particles and the third particles enter the first accommodating chamber through the first air inlet, and the size of the second particles is larger than the size of the third particles; the second air flow generating device is used to generate a second air flow, the second air flow generating device is connected to the first turning portion through the second accommodating chamber, the second air flow can suck the third particles entering the first accommodating chamber from the first turning portion into the second accommodating chamber, the second air flow cannot suck the second particles entering the first accommodating chamber into the second accommodating chamber, the third particles in the first accommodating chamber are sucked into the second accommodating chamber, so that the first accommodating chamber has the second particles but no third particles.

[0027] Furthermore, the submicron particle collection device further includes a first air outlet, the first air flow generating device is connected to the first accommodating chamber through the first air outlet, the first air flow device is used to suck out the second particles in the first accommodating chamber, and the second particles enter the target device through the first air outlet; a growth environment device is arranged between the first air outlet and the target device; the growth environment device includes a temperature regulating device and a humidity regulating device, the temperature regulating device is used to maintain the submicron cloud droplets in the second particles at a target temperature, and the humidity regulating device is used to maintain the submicron cloud droplets in the second particles at a target humidity.

[0028] Furthermore, the humidity regulating device includes a third accommodating chamber and a fourth accommodating chamber. The third accommodating chamber is used to accommodate the second particles after passing through the first accommodating chamber, and the fourth accommodating chamber is used to accommodate the second particles after passing through the third accommodating chamber. The third accommodating chamber and the fourth accommodating chamber both have water-retaining layers inside, and the water-retaining layers are used to maintain the humidity in the third accommodating chamber and the fourth accommodating chamber. The temperature regulating device is located outside the fourth accommodating chamber and is used to control the temperature in the fourth accommodating chamber. The second particles pass through the third accommodating chamber and the fourth accommodating chamber in sequence, and the temperature difference between the third accommodating chamber and the fourth accommodating chamber is a target value. The target value of the temperature difference can enable submicron cloud droplets to absorb water and grow into target particles, and the size of the target particles is larger than the size of the second particles.

[0029] In one embodiment, the growth environment device further includes a water storage device, the water retention layer has a water inlet and a water outlet, the water storage device is arranged outside the fourth containing chamber, and a water circulation device is provided between the water storage device and the water retention layer. The water circulation device is used to circulate the water in the water storage device through the water inlet of the water retention layer into the water retention layer, and the water outlet of the water retention layer is used to circulate the water in the water retention layer into the water storage device.

[0030] In one embodiment, the temperature regulating device includes a first temperature control layer and a second temperature control layer. The first temperature control layer is located outside the third accommodating cavity, and the second temperature control layer is located outside the fourth accommodating cavity. The first temperature control layer is used to control the temperature of the first temperature cavity, and the second temperature control layer is used to control the temperature in the second temperature cavity.

[0031] In one embodiment, the first temperature control layer is a constant temperature control layer, and the second temperature control layer is a refrigeration layer; the temperature difference of the target value is five to ten degrees Celsius; the target device includes a second collection net and a third collection chamber, the second collection net can intercept the target particles after passing through the growth environment device, and the third collection chamber is arranged at one end of the second collection net, and the target particles intercepted by the second collection net can enter the third collection chamber under the action of gravity.

[0032] According to a second aspect of the technical solution of the present invention, a submicron cloud droplet collection system is provided, characterized in that a submicron cloud droplet collection system comprises the above-mentioned submicron particle collection device.

[0033] In one embodiment, a submicron cloud droplet collection system includes a first vacuum pump, a first float flowmeter, a first cloud sampler, a circulating water pump, a second vacuum pump, a second float flowmeter, an aerosol regulator, a refrigeration plate, a temperature controller, a cloud droplet growth tube, an overflow tank, a saturated water retention layer, a second cloud sampler, a first separator, a cloud droplet collection bottle, and a submicron cloud droplet collection bottle. The first vacuum pump is connected to the first float flowmeter, and the airflow of the first vacuum pump is connected to the cloud droplet growth tube through the first float flowmeter. The cloud droplet growth tube is connected to the aerosol regulator, and the aerosol regulator is connected to the first receiving chamber of the first separator. The second receiving chamber of the first separator is connected to a second vacuum pump, and a second float flowmeter is provided outside the second receiving chamber. The second vacuum pump is used to discharge the third particulate matter in the second containing chamber, the first air inlet of the first separator is connected to the first cloud sampler, the first cloud sampler includes a target air inlet, a first collecting net, a cloud droplet collecting bottle, and a second collecting chamber; the saturated water retention layer is arranged on the outer layer of the cloud droplet growth tube, the saturated water retention layer is connected to a refrigeration plate, the refrigeration plate is connected to a temperature controller, an overflow tank is arranged between the cloud droplet growth tube and the aerosol regulator, a circulating water pump is used to connect the overflow tank, the saturated water retention layer and the aerosol regulator, the cloud droplet growth tube is also connected to the second cloud sampler, the second cloud sampler includes a target air inlet, a first collecting net and a submicron cloud droplet collecting bottle, the submicron cloud droplet collecting bottle is used to collect submicron cloud droplets grown in the cloud droplet growth tube.

[0034] According to a third aspect of the technical solution of the present invention, a method for collecting submicron cloud droplets is provided, which uses the aforementioned submicron cloud droplet collection system, and the submicron cloud droplet collection method includes the following steps: step S1, intercepting cloud droplets of a first size in the gas of a first cloud sampler by a first collecting net of the first cloud sampler to form a submicron cloud droplet collection bottle; step S2, allowing submicron cloud droplets of a second size and small particles to enter the first cloud sampler through the first collecting net, and the second size is smaller than the first size; step S3, separating submicron cloud droplets of the second size from small particles through a first separator, and the size of the submicron cloud droplets is larger than the size of the small particles; step S4, placing the submicron cloud droplets in an environment of target humidity and target temperature, so that the submicron cloud droplets grow in volume and then are collected.

[0035] In one embodiment, submicron cloud droplets are placed in an environment of target humidity and target temperature so that the submicron cloud droplets grow in volume and are then collected, including: step S41, placing the submicron cloud droplets in a first environment of a first temperature and a first humidity and temporarily retaining them for a first target time; step S42, placing the submicron cloud droplets that have been retained in the first environment for a target time in a second environment of a second temperature and a second humidity and temporarily retaining them for a second target time to obtain grown submicron cloud droplets, wherein the second temperature is lower than the first temperature, the second humidity is the same as or different from the first humidity, and the second target time is the same as or different from the first target time.

[0036] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings. Figure 1-Figure 4 As shown, the submicron particle collection device may include a target air inlet 101, a first collection net 102, a first collection chamber 15, a second collection chamber 3, and a first separator 14. The first collection net 102 can intercept first particles (not shown) in the first target gas entering through the target air inlet 101, and second particles 28 and third particles 29 in the first target gas entering through the target air inlet 101 can pass through the first collection net 102. The size of the first particles is larger than the size of the second particles 28 and the third particles 29. The first collection chamber 15 is arranged at one end of the first collection net 102. The first particles intercepted by the first collection net 102 can enter the first collection chamber 15 under the action of gravity, and the second particles 28 passing through the first collection net 102 enter the second collection chamber 3. The first separator 14 includes a first accommodating chamber 24, a first air inlet 25, a second accommodating chamber 26, a first turning portion 27, a first airflow generating device 1 and a second airflow generating device 5. An air inlet 25 can be connected to the first accommodating chamber 24, and the first turning portion 27 is located between the first air inlet 25 and the first accommodating chamber 24. The first airflow generating device 1 is used to generate a first airflow, and the first airflow generating device 1 is connected to the first accommodating chamber 24. The first airflow is used to allow the second particles 28 and the third particles 29 to enter the first accommodating chamber 24 through the first air inlet 25. The size of the second particles 28 is larger than the size of the third particles 29; the second airflow generating device 5 is used to generate a second airflow, and the second airflow generating device 5 is connected to the first turning portion 27 through the second accommodating chamber 26. The second airflow can suck the third particles 29 entering the first accommodating chamber 24 from the first turning portion 27 into the second accommodating chamber 26, and the second airflow cannot suck the second particles 28 entering the first accommodating chamber 24 into the second accommodating chamber 26. The third particles 29 in the first accommodating chamber 24 are sucked into the second accommodating chamber 26, so that the first accommodating chamber 24 has the second particles 28 but no third particles 29.

[0037] It is understood that the submicron particle collection device can be a device for separating particles of different sizes in the gas, and can effectively separate larger particles from smaller particles in the gas. In the preferred technical solution, the first particles are particles with a particle size greater than two to three microns, the second particles 28 are particles with a particle size less than two to three microns and greater than one micron, and the third particles 29 are particles with a particle size equal to or less than one micron.

[0038] It is understandable that the target air inlet 101 can be an inlet specifically used to introduce the gas to be treated (e.g., the first target gas) in the submicron particle collection device. The target air inlet 101 can allow the first target gas to smoothly enter the interior of the device for subsequent particle collection and separation. The target air inlet 101 can be a simple opening structure, or it can be designed as an adjustable valve to control the flow rate and flow of the gas. Air inlets of different shapes (such as round, square, etc.) can also be used to adapt to different installation environments. However, the present application is not limited to this, that is, those skilled in the art can adjust or set according to specific needs.

[0039] It is understandable that the first target gas may be a gas that enters the submicron particle collection device through the target air inlet 101, which may contain first particles, second particles 28 and third particles 29. For example, the first target gas may be: air (air in a natural environment, containing particles such as water vapor, dust, and pollen), aerosol (a mixture of liquid or solid particles suspended in a gas, such as fine particles in haze, aerosols generated by sprays, aerosols of cosmetics or detergents, etc.), smoke (such as tobacco smoke, industrial exhaust smoke, which often contain a variety of particles), spray (such as pesticide sprays used in agriculture, containing particles of different sizes), gas mixture (gas containing specific components, such as exhaust gas containing sulfur dioxide, automobile exhaust gas containing nitrogen oxides), mist (such as mist formed by condensation of water vapor, containing many tiny water droplets), bioaerosol (such as bacteria, viruses, spores and other biological particles suspended in the air, etc.), other specific gases (for example, specific chemical gases that may be used in laboratories, or gas flows generated in certain industrial processes, etc.). However, the present application is not limited thereto, that is, those skilled in the art can adjust or configure it according to specific needs.

[0040] It is understandable that the first collection net 102 can be a structural element inside the submicron particle collection device, and the first collection net 102 can intercept particles in the first target gas whose size is larger than a specific value, for example, only intercepting the first particles, while allowing the second particles 28 and the third particles 29 to pass through. Larger particles can be blocked from entering the downstream collection chamber by means of, for example, a physical barrier. The first collection net 102 can use screen materials with different apertures to accommodate particles of different particle sizes. It can also be static or dynamic (such as a net with a vibration mechanism) to improve the interception efficiency of particles. The material of the first collection net 102 can also be metal, plastic or composite material, depending on the application environment and gas properties. However, the present application is not limited to this, that is, those skilled in the art can adjust or set it according to specific needs.

[0041] It is understandable that the first collection chamber 15 can be a space or container for a submicron particle collection device to collect particles intercepted by the first collection net 102. The first collection chamber 15 can allow the particles to settle and collect effectively under the action of gravity. The first collection chamber 15 can be a closed cavity or an open container, and the specific structure can depend on the nature of the particles and subsequent processing requirements. The first collection chamber 15 can also be provided with a discharge valve to facilitate regular cleaning of the collected particles. Moreover, the first collection chamber 15 can also be equipped with a sensor or monitoring device to monitor the collection status in real time. However, the present application is not limited to this, that is, those skilled in the art can adjust or set it according to specific needs.

[0042] It is understandable that the second collection chamber 3 can be another space or container connected to the first collection chamber 15, and the second collection chamber 3 can be used to collect the second particles 28 passing through the first collection net 102. The first collection chamber 15 and the second collection chamber 3 can realize the separation and collection of particles of different particle sizes. For example, the first collection chamber 15 and the second collection chamber 3 can be a multi-layer collection structure of a submicron particle collection device to realize the step-by-step collection of different particles. The second collection chamber 3 can also be provided with a flow regulating device to control the number of particles flowing in. The second collection chamber 3 can also be equipped with a cleaning device to regularly process and clean the collected particles. However, the present application is not limited to this, that is, those skilled in the art can adjust or set according to specific needs.

[0043] It is understandable that the first separator 14 can be a specific part inside the submicron particle collection device, which can be used to separate the second particle 28 and the third particle 29. The first accommodating chamber 24 in the first separator 14 can be a space for accommodating the second particle 28 and the third particle 29 entering. The size of the second particle 28 can be larger than the size of the third particle 29, and the first accommodating chamber 24 can be used as a space for accommodating larger particles. For example, the first cavity can be: a cylindrical cavity, a square cavity, other polygonal cavities, etc. However, the present application is not limited to this, that is, those skilled in the art can adjust or set according to specific needs.

[0044] It is understandable that the first air inlet 25 can be an entrance for the second particulate matter 28 and the third particulate matter 29 to enter the first accommodating chamber 24, and the first air inlet 25 can be the second collecting chamber 3. For example, the first air inlet 25 can be an air inlet with different diameters, an air inlet equipped with a filtering device, etc. However, the present application is not limited thereto, that is, those skilled in the art can adjust or set according to specific needs.

[0045] It is understandable that the second accommodating chamber 26 may be a chamber for receiving the third particles 29. The second accommodating chamber 26 in the first separator 14 may be a region for accommodating smaller particles entering. For example, the second accommodating chamber 26 may be an accommodating chamber of different shapes, such as round, square, etc. However, the present application is not limited thereto, that is, those skilled in the art may adjust or set according to specific needs.

[0046] It is understandable that the first turning portion 27 may be a structure for changing the direction of airflow, and may be located between the first air inlet 25 and the first accommodating chamber 24. For example, the turning portion may be a turning portion with an inclined surface design or a turning portion with a curved surface design, etc. However, the present application is not limited thereto, and those skilled in the art may adjust or set the turning portion according to specific needs.

[0047] It is understandable that the first airflow generating device 1 may be a device for generating the first airflow to ensure that the gas can effectively flow into the first accommodating chamber 24. For example, the airflow generating device may be a fan or a vacuum pump, etc. However, the present application is not limited thereto, that is, those skilled in the art may adjust or set it according to specific needs.

[0048] It is understood that connectivity may refer to the connection relationship between the components so that the airflow can be transmitted smoothly. For example, the connectivity may be a direct pipe connection or a valve connection. However, the present application is not limited thereto, and those skilled in the art may adjust or set the configuration according to specific needs.

[0049] It is understandable that the first airflow may be an airflow generated by the first airflow generating device 1, which is used to introduce the gas into the first accommodating chamber 24. For example, the airflow may be an airflow with different flow rates and flow rates, etc. However, the present application is not limited thereto, that is, those skilled in the art may adjust or set it according to specific needs.

[0050] It is understandable that the second airflow generating device 5 may be a device for generating a second airflow to ensure that the third particles 29 can be effectively sucked into the second accommodating chamber 26. For example, the airflow generating device may be a fan or a vacuum pump. The second airflow may be an airflow generated by the second airflow generating device 5, which is used to suck the third particles 29 into the second accommodating chamber 26. For example, the airflow may be an airflow with different flow rates and flow rates. However, the present application is not limited thereto, and those skilled in the art may adjust or set the airflow according to specific needs.

[0051] It can be understood that the second airflow can suck the third particles 29 entering the first accommodating chamber 24 from the first turning portion 27 into the second accommodating chamber 26, which can represent the cooperation between the second airflow and the first turning portion 27. Since the large particles cannot turn under the inertia of the first airflow, the second airflow can only suck the second particles after passing through the turning portion. Therefore, the second airflow can suck the second particles into the second accommodating chamber 26 through the turning portion, but cannot suck the first particles into the second accommodating chamber 26 through the turning portion, thereby achieving the separation of the second particles 28 and the third particles 29.

[0052] Specifically, due to its large mass and inertia, the second particles 28 tend to maintain their original state of motion due to the inertia during the turning process of the second airflow. When the second airflow passes through the turning portion, the change in the direction of the second airflow causes the smaller third particles 29 to turn along the direction of the second airflow and enter the second accommodation chamber 26. However, due to its large inertia, the second particles 28 fail to adapt to the change in the direction of the second airflow, and thus cannot turn smoothly and be sucked into the second accommodation chamber 26. Therefore, the second particles 28 will continue to move along the original airflow path before the turning portion, and thus be discharged into other channels or the first accommodation chamber 24. Through this mechanism, the effective separation of the second particles 28 and the third particles 29 is achieved.

[0053] In this embodiment, the submicron particle collection device can efficiently separate and collect particles of different particle sizes by setting a target air inlet 101, a first collection net 102, a first collection chamber 15 and a first separator 14. In this process, the first target gas can be introduced through the target air inlet 101, and the first target gas contains first particles (such as large-sized particles), second particles 28 (medium-sized particles) and third particles 29 (small-sized particles). The first collection net 102 intercepts the first particles (such as large-sized particles) to ensure the effective separation of the subsequent second particles 28 and the third particles 29, and then a countercurrent airflow can be continuously generated through the first separator 14 to separate the second particles 28 (medium-sized particles) and the third particles 29 (small-sized particles). Due to the inertia of the medium-sized particles, they cannot turn with the high-speed countercurrent airflow, and are thus effectively collected in the first accommodating chamber 24. At the same time, the second airflow generating device 5 can inhale the smaller third particles 29 through the second accommodating chamber 26 to ensure the effective separation of the two particles. The separation process is completed without the need for physical impact, thus avoiding the particle breakage and rebound problems that may occur in traditional impactors.

[0054] In some embodiments, the submicron particle collection device further includes a first air outlet 30, the first airflow generating device 1 is connected to the first accommodating chamber 24 through the first air outlet 30, the first airflow device is used to suck out the second particles 28 in the first accommodating chamber 24, and the second particles 28 enter the target device through the first air outlet 30; a growth environment device 10 is arranged between the first air outlet 30 and the target device; the growth environment device 10 includes a temperature regulating device and a humidity regulating device, the temperature regulating device is used to maintain the submicron cloud droplets in the second particles 28 at a target temperature, and the humidity regulating device is used to maintain the submicron cloud droplets in the second particles 28 at a target humidity.

[0055] It is understood that the first air outlet 30 may be a structure in a submicron particle collection device, which is used to suck out the second particles 28 in the first accommodating cavity 24 through airflow and guide them to the target device. For example, the first air outlet 30 may be an outlet in various forms, such as a pipe, a valve, a filter, etc., and may be designed with different diameters and configurations.

[0056] It is understandable that the second particulate matter 28 in the first accommodating chamber 24 may refer to particulate matter separated by a submicron particle collection device, which enters a target device for subsequent processing or utilization through the first air outlet 30. For example, the third particulate matter 29 may include submicron cloud droplets. It should be noted that submicron cloud droplets may be formed in the atmosphere through the condensation or condensation process of water vapor. Specifically, when water vapor is cooled under specific temperature and humidity conditions, it condenses into small droplets, and the diameter of these small droplets usually falls within the submicron range. In the atmosphere, aerosol particles (such as dust, salt particles, etc.) provide condensation nuclei, and water vapor condenses on these particles to form cloud droplets. Therefore, the second particulate matter 28 will contain these aerosol particles and submicron cloud droplets formed by them.

[0057] It is understood that the growth environment device 10 may refer to a device for adjusting gas environment conditions (such as temperature and humidity) to promote the growth of submicron cloud droplets. For example, the growth environment device 10 may include a temperature control device, a humidifier, a dehumidifier, a gas mixer, and the like.

[0058] It is understandable that, since changes in temperature affect the saturation of water vapor and thus affect the evaporation or condensation process of cloud droplets, the stability of temperature has a certain influence on the formation of cloud droplets. The temperature regulating device in this embodiment can control the temperature of the submicron cloud droplets in the second particulate matter 28 to be at a target temperature to ensure that they survive and stabilize within a specific, ideal temperature range. For example, the temperature regulating device may include a heater, a cooler, a temperature control valve, etc. The target temperature may be an ideal temperature value set according to experimental or application requirements. In meteorological research, the target temperature may be related to meteorological conditions, the formation mechanism of cloud droplets, or the experimental design. For example, some studies may need to be conducted under conditions close to ambient temperature to more realistically reflect the natural state. However, the present application does not limit the specific value of the target temperature, that is, those skilled in the art can adjust or set it according to specific needs.

[0059] It is understandable that since changes in humidity will directly affect the size and number of cloud droplets, too low humidity may cause evaporation of cloud droplets, while too high humidity may cause excessive growth of cloud droplets, thereby affecting its usability in meteorological research or other applications. The humidity regulating device in this embodiment can maintain the humidity of submicron cloud droplets in the second particulate matter 28 at a target value. For example, the humidity regulating device may include a humidifier, a dehumidifier, a humidity sensor, etc. The target humidity may be an ideal humidity value set according to specific experimental or application requirements. In meteorological research, the target humidity may be closely related to the formation, growth and physical properties of cloud droplets. The setting of humidity may also be based on the required experimental conditions in order to observe the behavior and characteristics of cloud droplets at specific humidity. However, the present application does not limit the specific value of the target humidity, that is, those skilled in the art can adjust or set it according to specific needs.

[0060] It is understood that the target device may refer to a downstream device or system of a submicron particle collection device, which can be used to process, utilize or analyze the particles entering through the first gas outlet 30. The function of the device can vary according to different application requirements. For example, the target device may include but is not limited to: a collection device (for collecting and storing separated particles, such as a filter or a collection container), an analysis device (an instrument for component analysis or characteristic detection of particles, such as a mass spectrometer, a particle size analyzer, etc.), a reaction device (a device for chemical reaction or further treatment of particles, such as a reactor or a catalytic device, etc.), a gas treatment device (for treating gas flows related to particles, such as waste gas treatment equipment or gas purification equipment), an agricultural application device (equipment for spraying pesticides or other biologically active substances, using separated particles for precise application, etc.) However, the present application is not limited thereto, that is, those skilled in the art can adjust or set according to specific needs.

[0061] In this embodiment, the submicron particle collection device can effectively suck out the second particle 28 through the first air outlet 30 and transport it to the target device. At the same time, the growth environment device 10 is set to adjust the temperature and humidity, so as to achieve effective control and maintenance of submicron cloud droplets. The quality and stability of the collected submicron cloud droplets can be significantly improved to ensure their effectiveness in subsequent applications, especially in meteorological research or environmental monitoring, and can provide more accurate and reliable data, thereby providing better quality samples for research in related fields. In addition, the flexible design of the target device can make it suitable for multiple fields such as environmental monitoring, meteorological research, agriculture and materials science, which improves the breadth of application.

[0062] It should be noted that the second accommodating chamber 26 may also have a second air outlet 31 , which may be used to guide the third particulate matter 29 out of the second accommodating chamber 26 .

[0063] In some embodiments, the humidity regulating device may include a third containing chamber 7 and a fourth containing chamber 105. The third containing chamber 7 may be used to contain the second particles 28 after passing through the first containing chamber 24. The fourth containing chamber 105 is used to contain the second particles 28 after passing through the third containing chamber 7. Both the third containing chamber 7 and the fourth containing chamber 105 have a water retaining layer 12 inside. The water retaining layer 12 is used to maintain the humidity inside the third containing chamber 7 and the fourth containing chamber 105. The temperature regulating device may be arranged outside the fourth containing chamber 105 to control the temperature inside the fourth containing chamber 105. The second particles 28 pass through the third containing chamber 7 and the fourth containing chamber 105 in sequence. The temperature difference between the third containing chamber 7 and the fourth containing chamber 105 is a target value. The temperature difference of the target value can enable submicron cloud droplets to absorb water and grow into target particles. The size of the target particles is larger than that of the second particles 28.

[0064] It is understandable that the third accommodating chamber 7 may be a space for accommodating the second particulate matter 28 collected after passing through the first accommodating chamber 24, and its design purpose is to provide a closed environment for subsequent humidity and temperature adjustment. For example, the third accommodating chamber 7 may be a cylindrical cavity, a square cavity or other polygonal cavity, but the present application is not limited thereto, that is, those skilled in the art may adjust or set it according to specific needs.

[0065] It is understandable that the fourth holding chamber 105 can be a space for holding the second particles 28 after being processed by the third holding chamber 7, and further provide the necessary humidity and temperature regulation to promote the growth of particles. For example, the shape of the fourth holding chamber 105 can be the same as or different from the third holding chamber 7, such as: round, square, etc., but the present application is not limited to this, that is, those skilled in the art can adjust or set it according to specific needs. Among them, the third holding chamber 7 and the fourth holding chamber 105 can be designed as a connected structure to facilitate the continuous flow of particles. Both can use adjustable valves to adjust the flow rate and residence time according to actual needs. Among them, in order to optimize the growth process of particles, there can also be a flow control system that can control the residence time of the second particles 28 in the third holding chamber 7 and the fourth holding chamber 105, so as to adjust the water absorption and growth degree of the particles according to different experimental requirements.

[0066] It is understandable that the water-retaining layer 12 can be a material or structure disposed inside the third accommodating chamber 7 and the fourth accommodating chamber 105, which can effectively absorb and release moisture to maintain the humidity in the chamber within a target range. For example, the water-retaining layer 12 can be made of a highly hygroscopic material, such as a polymer, silica gel, etc., but the present application is not limited thereto, that is, those skilled in the art can adjust or set it according to specific needs. Humidity sensors can also be disposed in the third accommodating chamber 7 and the fourth accommodating chamber 105 to monitor real-time humidity changes, and automatically adjust the moisture release of the water-retaining layer 12 through a control system to maintain humidity stability.

[0067] It is understandable that the temperature regulating device can be designed as an electric heater or a refrigeration device, which can adjust the temperature of the fourth accommodating chamber 105 in real time according to demand. The device can be automatically adjusted through a temperature sensor feedback system to ensure that the temperature is always maintained at the target value.

[0068] In some embodiments, the temperature regulating device may include a first temperature control layer 106 and a second temperature control layer 8, wherein the first temperature control layer 106 is located outside the third accommodation chamber 7, and the second temperature control layer 8 is located outside the fourth accommodation chamber 105, and the first temperature control layer 106 is used to control the temperature of the first temperature chamber, and the second temperature control layer 8 is used to control the temperature in the second temperature chamber. Different temperatures can be controlled by the first temperature control layer 106 and the second temperature control layer 8, respectively, to obtain a target temperature difference.

[0069] It can be understood that the temperature difference of the target value may refer to the temperature difference set between the third accommodating chamber 7 and the fourth accommodating chamber 105, and this temperature difference can promote the submicron cloud droplets to absorb water and grow into target particles larger than the second particles 28. For example, the setting of the temperature difference can be adjusted according to experimental requirements to ensure the best particle growth conditions, but the present application is not limited thereto, that is, those skilled in the art can adjust or set according to specific needs.

[0070] It should be noted that there may be one or more growth environment devices 10 , and multiple growth environment devices 10 may be connected to the second accommodating chamber 26 together.

[0071] In this embodiment, by introducing the third accommodating chamber 7 and the fourth accommodating chamber 105 and arranging the water-retaining layer 12 inside the two cavities, the humidity in the system can be effectively maintained. The structural design of this embodiment can enhance the control of submicron cloud droplets, ensure that a suitable humidity environment is maintained in different accommodating chambers, thereby promoting the water absorption growth of submicron cloud droplets and finally forming target particles. This embodiment not only improves the efficiency of collecting and converting submicron cloud droplets, but also ensures that the size and properties of the final particles meet the requirements of specific applications.

[0072] In some embodiments, the first temperature control layer 106 is a constant temperature control layer, and the second temperature control layer 8 is a refrigeration layer; the temperature difference of the target value is five to ten degrees Celsius, and the second temperature control layer 8 can also be controlled by the thermostat 9; the target device includes a second collection net 107 and a third collection chamber 16, and the second collection net 107 can intercept the target particles after passing through the growth environment device 10. The third collection chamber 16 is arranged at one end of the second collection net 107, and the target particles intercepted by the second collection net 107 can enter the third collection chamber 16 under the action of gravity.

[0073] It is understandable that temperature fluctuations may cause changes in the saturation of water vapor, thereby affecting the formation and stability of cloud droplets. The constant temperature control layer of this embodiment can be a device that can maintain a stable and constant temperature. The constant temperature control layer can prevent the temperature from fluctuating due to changes in the external environment during the collection and growth of the second particles 28. This stability is crucial for the formation and growth of submicron cloud droplets. The use of a constant temperature control layer can effectively prevent the negative impact of temperature fluctuations and ensure that the particles can remain stable in an ideal temperature environment, thereby improving the collection efficiency and the quality of the particles.

[0074] It is understandable that lower temperatures can make it easier for water vapor to condense into cloud droplets and promote the growth of cloud droplets. The refrigeration layer in this embodiment can be a device or material that can lower the temperature. The refrigeration layer can provide a suitable low-temperature environment for the second particles 28 to promote the water absorption and growth of submicron cloud droplets. By lowering the temperature, the refrigeration layer can create an environment suitable for the growth of cloud droplets, ensuring that the physical properties and size of the target particles finally collected meet the expected requirements.

[0075] It is understandable that too small a temperature difference will result in the inability to effectively promote the growth of cloud droplets, while too large a temperature difference will cause evaporation or instability of the cloud droplets. The temperature difference of five to ten degrees Celsius in this embodiment can promote growth while avoiding extreme conditions that are not conducive to the stability of cloud droplets.

[0076] It is understandable that the second collection net 107 can intercept the target particles formed after passing through the growth environment device 10. Its mesh structure can be designed with different apertures to adapt to particles of different sizes, ensuring that particles larger than a certain size can be successfully captured. By setting nets with different apertures, the second collection net 107 can classify and separate the particles passing through, ensuring that the particles finally collected have a certain uniformity and specific physical properties. This is crucial for subsequent research and applications (such as meteorological research, environmental monitoring, etc.).

[0077] Gravity sedimentation: The third collection chamber 16 serves as a container that can utilize gravity to collect the target particles intercepted by the second collection net 107 into the chamber. The third collection chamber 16 can prevent the particles intercepted by the second collection net 107 from being easily carried away again, and can effectively store and accumulate them. Moreover, the third collection chamber 16 of the present embodiment can not only be a place to collect target particles, but also can be used as a space for subsequent processing and analysis. For example, a sensor can be set in the chamber to monitor the state of the particles, or to perform sampling and other operations. However, the present application is not limited to this, that is, those skilled in the art can adjust or set it according to specific needs.

[0078] By setting the first temperature control layer 106 as a constant temperature control layer and the second temperature control layer 8 as a cooling layer, and setting the temperature difference of the target value to five to ten degrees Celsius, this embodiment can effectively control and adjust the growth environment of the particles, thereby ensuring the stability and effectiveness of the target particles within a specific temperature range, which not only optimizes the water absorption growth process of submicron cloud droplets, but also ensures that the physical properties and size of the target particles finally collected meet specific application requirements, thereby improving the comprehensive performance and practical value of the collection device.

[0079] In some embodiments, the growth environment device 10 further includes a water storage device 11, the water retention layer 12 has a water inlet and a water outlet, the water storage device 11 is arranged outside the fourth housing chamber 105, and a water circulation device 4 is provided between the water storage device 11 and the water retention layer 12. The water circulation device 4 is used to circulate the water in the water storage device 11 into the water retention layer 12 through the water inlet of the water retention layer 12, and the water outlet of the water retention layer 12 is used to circulate the water in the water retention layer 12 into the water storage device 11.

[0080] It is understandable that the water-retaining layer 12 may be provided with a water inlet and a water outlet to facilitate the circulation of water. The water storage device 11 may be arranged outside the fourth accommodating chamber 105 and connected to the water-retaining layer 12 via a water circulation device 4. The water circulation device 4 may circulate the water in the water storage device 11 into the water-retaining layer 12, thereby maintaining the humidity of the water-retaining layer 12 at an ideal level. This achieves both the effective maintenance of the activation conditions of the particles and the guarantee of the stability and integrity of the particles during the entire separation process.

[0081] The water outlet of the water-retaining layer 12 circulates the excess water in the water-retaining layer 12 back to the water storage device 11, ensuring that the water content of the system is continuously balanced, and avoiding the activation effect of the particles being affected by excessive or insufficient water content, thereby not only improving the efficiency of the system, but also enhancing its reliability in practical applications.

[0082] In this embodiment, the water storage device 11 can move excess water in the water retaining layer 12 back into the middle water storage device 11 to achieve water circulation in the growth environment device 10 .

[0083] In a preferred embodiment, a working process of the submicron particle collection device may be as follows: First, the first target gas (for example, cloud and fog air masses, etc.) can be inhaled from the first air inlet 25, and cloud droplets with a particle size of first particles (for example, larger than two to three microns) are intercepted by the first collecting net 102 and enter the cloud droplet collecting bottle; while the second particles 28 (for example, submicron cloud droplets with a particle size less than two to three microns) and the third particles 29 (for example, particles with a particle size of one micron or less than one micron that have not been activated to form nuclei) enter the first separator 14 under the action of the first airflow generating device 1 and / or the second airflow generating device 5.

[0084] Secondly, the airflow entering the first separator 14 will be cut, and the set cutting particle size can be the size of the third particle 29 (for example, a particle size of one micron, less than one micron, and not activated nucleation particles), and particles less than or equal to the size of the third particle 29 can be discharged through the air path, while the second particle 28 (for example, submicron cloud droplets with a particle size less than two to three microns) can enter the growth environment device 10. The first particle is a cloud droplet with a particle size greater than 2-3 microns, the second particle is a submicron cloud droplet with a particle size less than 2-3 microns and greater than 1 micron; the third particle is a particle with a particle size of 1 micron or less than 1 micron and not activated nucleation.

[0085] Thirdly, there is a constant temperature water tank in the growth environment device 10, which can adjust the temperature and relative humidity of the second particulate matter 28 (for example, submicron cloud droplets with a particle size less than two to three microns) entering therein so that it is loaded with water vapor; in addition, the circulating water pump can draw water from the water storage device 11 into the inner wall of the water retaining layer 12 (the inner wall of the water retaining layer 12 can be provided with a porous water-absorbing material), so that the relative humidity of the inner wall of the aerosol growth tube reaches saturation.

[0086] Again, the thermostat can ensure a constant temperature of the refrigeration plate, forming a set temperature difference between the aerosol particles at the end of the growth environment device 10 and the head end of the growth environment device 10. In a preferred embodiment, the temperature difference can be five to ten degrees Celsius.

[0087] Again, the growth environment device 10 can allow the second particles 28 (for example, submicron cloud droplets with a particle size less than two to three microns) to absorb water and grow under cooling conditions, and the particle size grows to, for example, more than three microns. The second particles 28 (for example, submicron cloud droplets with a particle size less than two to three microns) that pass through the growth environment device 10 have a particle size that grows to, for example, three microns and can be processed by the subsequent second collection net 107 and finally enter the third collection chamber 16.

[0088] Through the above steps, the submicron particle collection device can effectively collect and transform submicron cloud droplets and ensure that the particles finally obtained meet the expected physical properties and size requirements.

[0089] It should be noted that the present application does not specifically limit the specific size of the submicron particles, that is, those skilled in the art can adjust their types according to actual conditions. The above three-micron situation is only an example of the sizes of the submicron particles in the present application, but is not limited to the situations described in the above embodiments.

[0090] Based on the same concept, the technical solution of the present invention also provides a submicron cloud droplet collection system. It can be understood that the submicron cloud droplet collection system provided in this embodiment can have all the beneficial effects of the above-mentioned submicron particle collection device, and the present invention will not be repeated here.

[0091] In some embodiments, Figure 1 As shown, the first airflow generating device 1 is connected to the first float flowmeter 2, the airflow of the first airflow generating device 1 is connected to the growth environment device 10 through the first float flowmeter 2, the growth environment device 10 is connected to the third accommodating chamber 7, the third accommodating chamber 7 is connected to the first accommodating chamber 24 of the first separator 14, the second airflow generating device 5 is connected to the second accommodating chamber 26 of the first separator 14, and the second airflow generating device 5 is provided outside the second accommodating chamber 26, and a second float flowmeter 6 is provided between the second airflow generating device 5 and the second accommodating chamber 26, and the second airflow generating device 5 is used to discharge the third particulate matter 29 in the second accommodating chamber 26, and the first air inlet 25 of the first separator 14 is connected to the second collecting chamber 3, and the second collecting chamber 3 includes a target air inlet The growth environment device 10 has a first air inlet 101, a first collection net 102, a first collection chamber 15, and a second collection chamber 3; the water-retaining layer 12 is arranged on the outer layer of the growth environment device 10, and the water-retaining layer 12 is connected to the second temperature control layer 8, and the second temperature control layer 8 is connected to a thermostat. There is a water storage device 11 between the growth environment device 10 and the third accommodation chamber 7, and the water circulation device 4 is used to connect the water storage device 11, the water-retaining layer 12 and the third accommodation chamber 7. The growth environment device 10 is also connected to a second collection net 107, and the second collection net 107 includes a target air inlet 101, a first collection net 102 and a third collection chamber 16, and the third collection chamber 16 is used to collect submicron cloud droplets grown in the growth environment device 10. It can be understood that the vacuum pump can be used as an option for the first airflow generating device 1 and / or the second airflow generating device 5, and its main function is to create a negative pressure environment to promote the airflow to flow inside the device, thereby effectively guiding the separation of particles in the gas. The use of a vacuum pump can ensure the stability and controllability of the airflow, and provide strong support for the subsequent particle separation process. Compared with traditional airflow generation methods, vacuum pumps can better adapt to airflow requirements under different operating conditions, enhancing the flexibility and applicability of the equipment.

[0092] However, the present invention does not specifically limit the type of the first airflow generating device 1 and / or the second airflow generating device 5. For example, the first airflow generating device 1 and / or the second airflow generating device 5 may also be a blower (generating airflow by using a fan or centrifugal principle, suitable for occasions requiring a large airflow volume), a compressed air device (generating airflow through a compressed air source, suitable for applications requiring high-pressure airflow), a gas pump (such as a diaphragm pump or a gear pump, which can effectively move gas and is suitable for the processing of specific gases), an ejector (using the principle of fluid dynamics to inject gas into the fluid through a nozzle to generate airflow), an electric fan (a simple electric fan can be used for small-scale airflow generation, suitable for low-requirement applications), a centrifugal pump (generating airflow by rotating an impeller, suitable for the transfer of liquids and gases), a negative pressure aspirator (extracting gas from a certain area through the negative pressure principle to form an airflow), etc., that is, technical personnel in this field can set or adjust according to actual conditions.

[0093] It is understandable that the introduction of the first float flowmeter 2 and the second float flowmeter 6 is used to monitor the flow of the first airflow and the second airflow, respectively. The flowmeter can display the flow of the airflow in real time by the rise and fall of the float, which is easy to operate and has high precision. The existence of the flowmeter enables the operator to grasp the changes in the airflow at any time, so as to adjust the airflow parameters in time to achieve the best separation effect. In addition, real-time monitoring of the flow helps to ensure that the equipment operates within a safe range and avoid poor particle separation effect caused by airflow fluctuations.

[0094] Based on the same concept, the technical solution of the present invention also provides a method for collecting submicron cloud droplets. Figure 5 As shown, the method for collecting submicron cloud droplets can be used in the above-mentioned submicron cloud droplet collection system, including the following steps.

[0095] Step S1, by allowing the first size of cloud droplets in the gas of the first cloud sampler to be intercepted by the first collecting net of the first cloud sampler to form a submicron cloud droplet collection bottle, the first collecting net of the first cloud sampler can effectively intercept cloud droplets of a certain size, ensuring that larger particles will not interfere with the collection process of submicron cloud droplets.

[0096] Step S2, submicron cloud droplets and small particles of the second size are allowed to enter the first cloud sampler through the first collecting net. The second size is smaller than the first size. Submicron cloud droplets of the second size enter the first cloud sampler so that the subsequent first separator can separate the submicron cloud droplets from the small particles.

[0097] Step S3, separating submicron cloud droplets of the second size from small particles through the first separator. The size of the submicron cloud droplets is larger than that of the small particles. After passing through the first separator, the submicron cloud droplets can be effectively separated from the small particles, thereby ensuring the consistency in size of the collected cloud droplets, ensuring the purity of subsequent processing, and thus improving the reliability of the experiment or application.

[0098] Step S4, placing the submicron cloud droplets in an environment with target humidity and target temperature, so that the submicron cloud droplets grow in volume and then are collected. By placing the submicron cloud droplets in a specific humidity and temperature environment to make them grow in volume, the environmental conditions can be effectively used to promote the aggregation and enlargement of the cloud droplets for subsequent research or use.

[0099] In some embodiments, Figure 6 As shown, step S4 may further include the following steps.

[0100] Step S41 , placing the submicron cloud droplets in a first environment of a first temperature and a first humidity and temporarily retaining them for a first target time period.

[0101] The first temperature may be a specific temperature value set in step S41, and may be a temperature selected to promote the growth and water absorption of submicron cloud droplets. The first temperature should be conducive to the condensation of water vapor on the surface of cloud droplets to promote the volume growth of cloud droplets.

[0102] The first humidity may be the relative humidity value set in step S41, indicating the content of water vapor in the air. The first humidity may be high enough to ensure that the submicron cloud droplets can absorb moisture, thereby promoting the growth of their volume.

[0103] The first environment may be the specific environmental conditions created in step S41, including a combination of a first temperature and a first humidity. The first environment may be the atmosphere in which the submicron cloud droplets are located in the initial growth stage, and first provides suitable conditions for the growth of the cloud droplets.

[0104] The first target duration may be a predetermined time that the submicron cloud droplets stay in the first environment. The first time length may be set through experiments or theoretical analysis, with the purpose of ensuring that the cloud droplets have enough time to absorb water and increase in volume in this environment. The selection of the first target duration may affect the final size and quality of the cloud droplets. However, the present application does not limit the specific time of the first target duration, that is, those skilled in the art may adjust or set it according to specific needs.

[0105] Step S42, placing the submicron cloud droplets that have been temporarily retained for a target time in the first environment into a second environment at a second temperature and a second humidity and temporarily retaining them for a second target time to obtain grown submicron cloud droplets, wherein the second temperature is lower than the first temperature, the second humidity is the same as or different from the first humidity, and the second target time is the same as or different from the first target time.

[0106] The second temperature may be a specific temperature value set in step S42, and the second temperature may be lower than the first temperature. The lowered temperature may promote further growth of submicron cloud droplets or change their physical properties. The lowered temperature may cause surface moisture of the cloud droplets to condense, further increasing the volume of the cloud droplets.

[0107] The second humidity may be the relative humidity value set in step S42, and the second humidity may be the same as or different from the first humidity. Changes in humidity may affect the water absorption capacity and growth rate of cloud droplets. The second humidity may be the same as or different from the first humidity. If the second humidity is the same, the growth process of cloud droplets may be smoother; if it is different, it may affect the water absorption rate and final size of cloud droplets. However, the present application is not limited thereto, and those skilled in the art may adjust or set according to specific needs.

[0108] The second environment may be the new environmental condition created in step S42, including a combination of a second temperature and a second humidity, and is intended to further adjust the growth state of cloud droplets.

[0109] The second target duration may be a predetermined time for the submicron cloud droplets to stay in the second environment, and this time length is to ensure that the cloud droplets have enough time to grow, absorb water, or undergo other physical changes in the new environment.

[0110] In a possible case, the first temperature in this embodiment may be greater than the second temperature, the second humidity may be equal to the first humidity, and the second target duration may be equal to the first target duration. In this case, submicron cloud droplets can absorb moisture under higher humidity conditions and further increase their volume under lower temperatures, and eventually larger and more uniform cloud droplets may be obtained.

[0111] In other possible cases, the first temperature in this embodiment may be greater than the second temperature, the second humidity may be less than the first humidity, and the second target duration may be less than the first target duration. In this case, the growth of cloud droplets under low humidity is limited, which may cause their water absorption capacity to decrease. The cloud droplets finally formed are smaller in volume, which can provide a matrix for some special research.

[0112] In other possible cases, the first temperature in this embodiment may be equal to the second temperature, the second humidity may be greater than the first humidity, and the second target duration may be greater than the first target duration. In this case, the cloud droplets remain stable at the same temperature, but the increase in humidity may cause the cloud droplets to absorb more water, thereby increasing the volume, and ultimately obtaining larger cloud droplets, which can provide a matrix for some special research.

[0113] In other possible cases, the first temperature in this embodiment may be lower than the second temperature, and the second humidity may be lower than the first humidity. In this case, cloud droplets may evaporate due to the increase in temperature, while the decrease in humidity limits the absorption of moisture. The final cloud droplet volume may be reduced, which can provide a matrix for some special studies.

[0114] In this embodiment, by placing submicron cloud droplets in different temperature and humidity environments and adjusting them in stages, the growth process of cloud droplets can be effectively controlled. The setting of the first environment and the second environment can make full use of different physical conditions to promote the effective water absorption and growth of cloud droplets. Moreover, by temporarily retaining the target time under different environmental conditions, it can ensure that the cloud droplets fully absorb water at suitable humidity and temperature, thereby achieving effective growth in volume. This method can optimize the physical properties of cloud droplets and lay a good foundation for subsequent collection and application. In summary, this embodiment can adjust the temperature and humidity parameters in the first and second environments. The method has high flexibility and adaptability, and can be adjusted according to different experimental requirements, thereby improving the collection efficiency and the quality of the final particulate matter.

[0115] It is to be understood that in the present invention, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0116] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present invention, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0117] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0118] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0119] It is further understood that, although the operations are described in a specific order in the accompanying drawings in the technical solution of the present invention, it should not be understood as requiring the operations to be performed in the specific order or serial order shown, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0120] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the technical concepts disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed by the present invention. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present invention are indicated by the following scope of rights.

[0121] It should be understood that the present invention is not limited to the precise structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the scope of the appended claims.

Claims

1. A submicron particle collection device, characterized in that: It includes a target air inlet, a first collection net, a first collection chamber, a second collection chamber and a first separator, the first collection net can intercept first particles in the first target gas entering through the target air inlet, the second particles and the third particles in the first target gas entering through the target air inlet can pass through the first collection net, the size of the first particles is greater than the size of the second particles and the third particles, the first collection chamber is arranged at one end of the first collection net, the first particles intercepted by the first collection net can enter the first collection chamber under the action of gravity, and the second particles passing through the first collection net enter the second collection chamber; The first separator includes a first accommodating chamber, a first air inlet, a second accommodating chamber, a first turning portion, a first airflow generating device and a second airflow generating device, the first air inlet is connected to the first accommodating chamber, the first turning portion is located between the first air inlet and the first accommodating chamber, the first airflow generating device is used to generate a first airflow, the first airflow generating device is connected to the first accommodating chamber, the first airflow is used to allow second particles and third particles to enter the first accommodating chamber through the first air inlet, and the size of the second particles is larger than the size of the third particles.

2. The submicron particle collection device according to claim 1, characterized in that: The second airflow generating device is used to generate a second airflow. The second airflow generating device is connected to the first turning portion through the second accommodating chamber. The second airflow can suck the third particles entering the first accommodating chamber from the first turning portion into the second accommodating chamber. The second airflow cannot suck the second particles entering the first accommodating chamber into the second accommodating chamber. The third particles in the first accommodating chamber are sucked into the second accommodating chamber, so that the first accommodating chamber contains the second particles but not the third particles.

3. The submicron particle collection device according to claim 2, characterized in that: The submicron particle collection device further includes a first air outlet, a first airflow generating device is connected to the first accommodating chamber through the first air outlet, and the first airflow device is used to suck out the second particles in the first accommodating chamber, and the second particles enter the target device through the first air outlet; the first particles are cloud droplets with a particle size greater than 2-3 microns, and the second particles are submicron cloud droplets with a particle size less than 2-3 microns and greater than 1 micron; the third particles are particles with a particle size of 1 micron or less than 1 micron that have not been activated to form nuclei; A growth environment device is provided between the first air outlet and the target device; the growth environment device includes a temperature regulating device and a humidity regulating device, the temperature regulating device is used to maintain the submicron cloud droplets in the second particulate matter at a target temperature, and the humidity regulating device is used to maintain the submicron cloud droplets in the second particulate matter at a target humidity; The humidity regulating device comprises a third accommodating chamber and a fourth accommodating chamber, wherein the third accommodating chamber is used to accommodate the second particles after passing through the first accommodating chamber, and the fourth accommodating chamber is used to accommodate the second particles after passing through the third accommodating chamber, and the third accommodating chamber and the fourth accommodating chamber both have water retaining layers inside, and the water retaining layers are used to maintain the humidity in the third accommodating chamber and the fourth accommodating chamber; The temperature regulating device is located outside the fourth accommodating chamber and is used to control the temperature in the fourth accommodating chamber; The second particles pass through the third and fourth accommodating chambers in sequence. The temperature difference between the third and fourth accommodating chambers is a target value. The temperature difference of the target value can make submicron cloud droplets absorb water and grow into target particles. The size of the target particles is larger than that of the second particles.

4. The submicron particle collection device according to claim 3, characterized in that: The growth environment device further includes a water storage device, the water retention layer has a water inlet and a water outlet, the water storage device is arranged outside the fourth accommodating chamber, and a water circulation device is provided between the water storage device and the water retention layer. The water circulation device is used to circulate the water in the water storage device through the water inlet of the water retention layer into the water retention layer, and the water outlet of the water retention layer is used to circulate the water in the water retention layer into the water storage device.

5. The submicron particle collection device according to claim 3, characterized in that: The temperature regulating device includes a first temperature control layer and a second temperature control layer. The first temperature control layer is located outside the third accommodating cavity, and the second temperature control layer is located outside the fourth accommodating cavity. The first temperature control layer is used to control the temperature of the first temperature cavity, and the second temperature control layer is used to control the temperature in the second temperature cavity.

6. The submicron particle collection device according to claim 5, characterized in that: The first temperature control layer is a constant temperature control layer, and the second temperature control layer is a refrigeration layer; the temperature difference of the target value is five to ten degrees Celsius; The target device includes a second collection net and a third collection chamber. The second collection net can intercept the target particles after passing through the growth environment device. The third collection chamber is arranged at one end of the second collection net. The target particles intercepted by the second collection net can enter the third collection chamber under the action of gravity.

7. A submicron cloud droplet collection system, characterized in that: The submicron cloud droplet collection system comprises the submicron particle collection device according to any one of claims 1-6.

8. The submicron cloud droplet collection system according to claim 7, characterized in that: The first airflow generating device is connected to the first float flowmeter, the airflow of the first airflow generating device is connected to the growth environment device through the first float flowmeter, the growth environment device is connected to the third accommodating chamber, the third accommodating chamber is connected to the first accommodating chamber of the first separator, a second airflow generating device is provided outside the second accommodating chamber of the first separator, a second float flowmeter is provided between the second airflow generating device and the second accommodating chamber, the second airflow generating device is used to discharge the third particulate matter in the second accommodating chamber, the first air inlet of the first separator is connected to the second collecting chamber, the second collecting chamber includes a target air inlet, a first collecting net, a first collecting chamber, and a second collecting chamber; The water-retaining layer is arranged on the outer layer of the growth environment device, the water-retaining layer is connected to the second temperature control layer, the second temperature control layer is connected to the temperature controller, a water storage device is arranged between the growth environment device and the third accommodation chamber, and the water circulation device is used to connect the water storage device, the water-retaining layer and the third accommodation chamber. The growth environment device is also connected to a second collection network, which includes a target air inlet, a first collection network and a third collection chamber. The third collection chamber is used to collect submicron cloud droplets grown in the growth environment device.

9. A method for collecting submicron cloud droplets, characterized in that: The submicron cloud droplet collection system according to claim 8 is characterized in that the submicron cloud droplet collection method comprises the following steps: Step S1, intercepting cloud droplets of a first size in the gas of the first cloud sampler by a first collecting net of the first cloud sampler to form a submicron cloud droplet collection bottle; Step S2, allowing submicron cloud droplets and small particles of a second size to enter the first cloud sampler through the first collection net, wherein the second size is smaller than the first size; Step S3, separating submicron cloud droplets of a second size from small particles by a first separator, wherein the size of the submicron cloud droplets is larger than the size of the small particles; Step S4, placing the submicron cloud droplets in an environment with target humidity and target temperature, so that the submicron cloud droplets grow in volume and then are collected.

10. The method for collecting submicron cloud droplets according to claim 9, characterized in that: Submicron cloud droplets are placed in an environment with target humidity and target temperature to grow in volume and then collected, including: Step S41, placing the submicron cloud droplets in a first environment with a first temperature and a first humidity for a first target time period; Step S42, placing the submicron cloud droplets that have been temporarily retained for a target time in the first environment into a second environment at a second temperature and a second humidity and temporarily retaining them for a second target time to obtain grown submicron cloud droplets, wherein the second temperature is lower than the first temperature, the second humidity is the same as or different from the first humidity, and the second target time is the same as or different from the first target time.

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