Submicron particle collection device, collection system and collection method

Abstract

The present invention discloses a submicron particle collection device, a collection system, and a collection method. The submicron particle collection device is capable of efficiently separating and collecting particles of different particle sizes by setting a target air inlet, a first collection net, a first collection chamber, and a first separator. A first target gas is introduced through the target air inlet, and the first target gas contains first particles, second particles, and third particles. The first collection net intercepts the first 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 and the third particles for subsequent collection. The present invention can efficiently separate and collect particles of different particle sizes, ensuring 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.

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] Droplets in a cloud mass undergo three stages: condensation, collision, and sedimentation. During the condensation stage, cloud condensation nuclei absorb water, forming droplets with diameters between 1 and 20 microns. At this stage, the pollutant concentration is proportional to the droplet diameter. Subsequently, small droplets collide with each other to form larger droplets, where the pollutant concentration is inversely proportional to the droplet diameter. Ultimately, the droplets continue to grow and settle, at which point the relationship between pollutant concentration and droplet diameter is no longer significant. Patent CN115479808B describes a relatively mature technology for collecting cloud droplets with a diameter of two to three microns or larger.

[0003] On the one hand, aerosols act as condensation nuclei under supersaturated water vapor conditions to form cloud droplets. In the early stages of cloud droplet formation, submicron cloud droplets are mostly distributed in the particle size range of 1-2μm, mixing with interstitial aerosol particles of tens to hundreds of nanometers in the air. On the other hand, current cloud water samplers, whether impactors or chord impactors, are limited by aerodynamic limitations and cannot effectively collect submicron cloud droplets in the 1-2μm particle size range.

[0004] Considering the above technical difficulties, there is currently no effective way to collect submicron cloud droplets. Summary of the Invention

[0005] 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.

[0006] 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. 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. The size of the first particles is larger than the sizes 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, and the first airflow is used to allow the second particles and the 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.

[0007] 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 part through the second accommodating chamber. The second airflow can suck the third particles entering the first accommodating chamber into the second accommodating chamber from the first turning part, 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.

[0008] 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 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 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 chamber, the third chamber, is used to accommodate the second particles after passing through the first chamber, and the fourth chamber is used to accommodate the second particles after passing through the third chamber. Both the third and fourth chambers have water-retaining layers inside them, which are used to maintain humidity within the third and fourth chambers. A temperature control device is located outside the fourth chamber to control the temperature within the fourth chamber. The second particles pass through the third and fourth chambers in sequence, and the temperature difference between the third and fourth chambers is a target value. The target temperature difference enables submicron cloud droplets to absorb water and grow into target particles, the size of which is larger than that of the second particles. The first particles are cloud droplets with a particle size greater than 2-3 microns, the second particles are submicron cloud droplets with a particle size less than 2-3 microns and greater than 1 micron, and the third particles are particles with a particle size of 1 micron or less that have not been activated for nucleation.

[0009] 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 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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 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 retention layer is provided on the outer layer of the growth environment device, the water retention layer is connected to the second temperature control layer, the second temperature control layer is connected to a temperature controller, a water storage device is provided between the growth environment device and the third accommodating chamber, the water circulation device is used to connect the water storage device, the water retention 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.

[0014] 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. The method for collecting submicron cloud droplets includes the following steps:

[0015] Step S1, cloud droplets of a first size in the gas of the first cloud sampler are intercepted by a first collecting net of the first cloud sampler into a submicron cloud droplet collecting bottle;

[0016] 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;

[0017] Step S3, separating submicron cloud droplets of a second size from the small particles by a first separator, wherein the size of the submicron cloud droplets is larger than the size of the small particles;

[0018] 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.

[0019] Preferably, the submicron cloud droplets are placed in an environment of target humidity and target temperature to allow the submicron cloud droplets to grow in volume and then collected, which includes:

[0020] 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;

[0021] 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.

[0022] 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:

[0023] The submicron particle collection device of the present invention utilizes a target air inlet, a first collection net, a first collection chamber, and a first separator to efficiently separate and collect particles of varying sizes. During this process, a first target gas containing first particles (e.g., large particles), second particles (medium particles), and third particles (small particles) can be introduced through the target air inlet. The first collection net intercepts the first particles (e.g., large particles), ensuring the subsequent effective separation of the second and third particles. Subsequently, a countercurrent airflow is generated through the first separator, separating the second and third particles (medium particles). Due to the inertia of the medium-sized particles, they are unable to deflect with the high-speed countercurrent airflow, resulting in their effective collection in the first chamber. Simultaneously, the second airflow generating device draws smaller third particles through the second chamber, ensuring the effective separation of the two particle types. This separation process is accomplished without the need for physical impaction, thus avoiding the particle breakage and rebound issues that can occur in traditional impactors.

[0024] 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

[0025] 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.

[0026] Figure 1 FIG2 is a schematic diagram of a submicron particle collection device according to an exemplary embodiment of the present invention.

[0027] Figure 2 FIG. 1 is a schematic structural diagram of a growth environment device according to an exemplary embodiment of the present invention.

[0028] Figure 3 FIG. 4 is a schematic structural diagram of a first separator according to an exemplary embodiment of the present invention.

[0029] Figure 4 FIG. 1 is a schematic diagram showing the internal structure of a first separator according to an exemplary embodiment of the present invention.

[0030] Figure 5 The figure is a flow chart of a method for collecting submicron cloud droplets according to an exemplary embodiment of the present invention.

[0031] Figure 6 is a flow chart of a method for collecting submicron cloud droplets according to another exemplary embodiment of the present invention.

[0032] Description of reference numerals in the accompanying drawings:

[0033] 1. First air flow generating device; 2. First float flowmeter; 3. Second collecting chamber; 4. Water circulation device; 5. Second air flow generating device; 6. Second float flowmeter; 7. Third accommodating chamber; 8. Second temperature control layer; 9. Temperature controller; 10. Growth environment device; 11. Water storage device; 12. Water retention layer; 14. First separator; 15. First collecting chamber; 16. Third collecting chamber; 24. First accommodating chamber; 25. First air inlet; 26. Second accommodating chamber; 27. First turning part; 28. Second particulate matter; 29. Third particulate matter; 30. First air outlet; 31. Second air outlet; 101. Target air inlet; 102. First collecting net; 103. Second collecting chamber; 105. Fourth accommodating chamber; 106. First temperature control layer; 107. Second collecting net. DETAILED DESCRIPTION

[0034] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent like or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0035] 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 provided 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 collecting chamber. A second air flow generating device is provided, 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 airflow, the first air flow generating device is connected to the first accommodating chamber, the first airflow is used to allow the second particles and the 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; the second air flow generating device is used to generate a second airflow, the second air flow 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 and does not contain the third particles.

[0036] 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.

[0037] 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 turn, and the temperature difference between the third accommodating chamber and the fourth accommodating chamber is a target value. The target value 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 that of the second particles.

[0038] 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 holding 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.

[0039] 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 inside the second temperature cavity.

[0040] 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, and 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, and the target particles intercepted by the second collection net can enter the third collection chamber under the action of gravity.

[0041] According to a second aspect of the technical solution of the present invention, a submicron cloud droplet collection system is provided, characterized in that the submicron cloud droplet collection system includes the above-mentioned submicron particle collection device.

[0042] 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. A second vacuum pump is provided outside the second receiving chamber of the first separator, and a second float flowmeter is provided between the second vacuum pump and the second receiving chamber. The second vacuum pump is used to discharge the third particulate matter in the second containing cavity, 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 cavity; 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 cooling plate, the cooling plate is connected to a temperature controller, an overflow tank is provided 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.

[0043] According to the 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 into 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 are collected after the volume grows.

[0044] 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.

[0045] The technical solution of the present invention will be further described below with reference to the accompanying drawings. Figures 1-4 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 the first particles (not shown) in the first target gas entering through the target air inlet 101, and the second particles 28 and the 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 provided 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, but 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 second particles 28 but no third particles 29.

[0046] It is understood that the submicron particle collection device can be a device for separating particles of different sizes in a gas, effectively separating 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.

[0047] It is understood that the target air inlet 101 can be an inlet specifically used to introduce the gas to be processed (e.g., the first target gas) into the submicron particle collection device. The target air inlet 101 allows the first target gas to smoothly enter the device for subsequent particle collection and separation. The target air inlet 101 can be a simple opening structure or designed as an adjustable valve to control the flow rate and flow of the gas. Air inlets of different shapes (e.g., circular, square, etc.) can also be used to accommodate different installation environments. However, this application is not limited to this, and those skilled in the art can adjust or configure the inlet according to specific needs.

[0048] It is understood that the first target gas may be gas entering 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), aerosols (a mixture comprising liquid or solid particles suspended in gas, such as fine particles in haze, aerosols generated by sprays, and aerosols from cosmetics or detergents), smoke (such as tobacco smoke and industrial exhaust smoke, which often contain a variety of particles), sprays (such as pesticide sprays used in agriculture, which contain particles of different sizes), gas mixtures (gases containing specific components, such as exhaust gases containing sulfur dioxide and automobile exhaust containing nitrogen oxides), mist (such as mist formed by condensation of water vapor, containing numerous tiny water droplets), bioaerosols (such as gases containing biological particles such as bacteria, viruses, and spores suspended in air), or other specific gases (such as specific chemical gases that may be used in laboratories or gas streams generated in certain industrial processes). However, the present application is not limited thereto, and those skilled in the art can adjust or configure it according to specific needs.

[0049] It is understandable that the first collection net 102 can be a structural element inside the submicron particle collection device. The first collection net 102 can intercept particles in the first target gas that are 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, for example, by means of a physical barrier. The first collection net 102 can use screen materials with different pore sizes 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.

[0050] 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 sensors or monitoring equipment 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.

[0051] 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 particulate matter 28 that passes through the first collection net 102. The first collection chamber 15 and the second collection chamber 3 can realize the separation and collection of particulate matter 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 particulate matter. The second collection chamber 3 can also be provided with a flow regulating device to control the amount of particulate matter flowing in. The second collection chamber 3 can also be equipped with a cleaning device to regularly process and clean the collected particulate matter. 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.

[0052] 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 cavity 24 in the first separator 14 can be a space for accommodating the entering second particle 28 and third particle 29. The size of the second particle 28 can be larger than the size of the third particle 29, and the first accommodating cavity 24 can serve 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 it according to specific needs.

[0053] It is understood that the first air inlet 25 can be the entrance for the second particulate matter 28 and the third particulate matter 29 to enter the first receiving 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 of different diameters, an air inlet equipped with a filter device, etc. However, the present application is not limited to this, that is, those skilled in the art can adjust or configure it according to specific needs.

[0054] It is understood that the second accommodating chamber 26 may be a cavity for receiving the third particulate matter 29. The second accommodating chamber 26 in the first separator 14 may be an area for accommodating smaller particles entering. For example, the second accommodating chamber 26 may have various shapes, such as circular or square. However, the present application is not limited thereto, and those skilled in the art may adjust or configure the shape according to specific needs.

[0055] It is understood that the first turning portion 27 can be a structure for changing the direction of airflow and can be located between the first air inlet 25 and the first accommodating chamber 24. For example, the turning portion can be a turning portion with an inclined surface design or a curved surface design. However, the present application is not limited thereto, and those skilled in the art can adjust or configure the turning portion according to specific needs.

[0056] It is understood that the first airflow generating device 1 can 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 can be a fan or a vacuum pump. However, the present application is not limited to this, that is, those skilled in the art can adjust or configure it according to specific needs.

[0057] It is understood that connectivity can refer to the connection between components that allows for smooth airflow. For example, the connectivity can be a direct pipe connection or a valve connection. However, this application is not limited thereto, and those skilled in the art may adjust or configure the configuration based on specific needs.

[0058] It is understood that the first airflow may be an airflow generated by the first airflow generating device 1, which is used to introduce gas into the first accommodating chamber 24. For example, the airflow may have different flow rates and flow rates. However, the present application is not limited thereto, and those skilled in the art may adjust or configure the airflow according to specific needs.

[0059] It is understood that the second airflow generating device 5 can be a device for generating a second airflow to ensure that the third particulate matter 29 can be effectively drawn into the second receiving chamber 26. For example, the airflow generating device can be a fan or a vacuum pump. The second airflow can be an airflow generated by the second airflow generating device 5 to draw the third particulate matter 29 into the second receiving chamber 26. For example, the airflow can have different flow rates and flow rates. However, this application is not limited to this, and those skilled in the art can adjust or configure it according to specific needs.

[0060] It can be understood that the ability of the second airflow to draw third particles 29 entering the first accommodating chamber 24 through the first deflection portion 27 into the second accommodating chamber 26 indicates the coordination between the second airflow and the first deflection portion 27. Because large particles cannot be deflected by the inertia of the first airflow, the second airflow can only draw in second particles after passing through the deflection portion. Therefore, the second airflow can draw the second particles into the second accommodating chamber 26 through the deflection portion, but cannot draw the first particles into the second accommodating chamber 26 through the deflection portion, thereby achieving separation of the second particles 28 and the third particles 29.

[0061] Specifically, due to its greater mass and inertia, the second particles 28 are subject to inertia during the deflection of the second airflow, causing them to tend to maintain their original state of motion. When the second airflow passes through the deflection portion, the change in direction of the second airflow causes the smaller third particles 29 to deflect in the same direction as the second airflow and enter the second accommodating chamber 26. However, due to its greater inertia, the second particles 28 are unable to adapt to the change in direction of the second airflow and are therefore unable to smoothly deflect and be drawn into the second accommodating chamber 26. Therefore, the second particles 28 continue to move along the original airflow path before the deflection portion, and are discharged into other channels or the first accommodating chamber 24. Through this mechanism, the effective separation of the second particles 28 and the third particles 29 is achieved.

[0062] In this embodiment, the submicron particle collection device, by providing a target air inlet 101, a first collection net 102, a first collection chamber 15, and a first separator 14, is capable of efficiently separating and collecting particles of varying sizes. During this process, a first target gas containing first particles (e.g., large particles), second particles 28 (medium-sized particles), and third particles 29 (small particles) can be introduced through the target air inlet 101. The first target gas intercepts the first particles (e.g., large particles), ensuring the subsequent effective separation of the second particles 28 and the third particles 29. Subsequently, a countercurrent airflow is generated through the first separator 14, separating the second particles 28 (medium-sized particles) from the third particles 29 (small particles). Due to the inertia of the medium-sized particles, they are unable to deflect with the high-speed countercurrent airflow and are therefore effectively collected in the first receiving chamber 24. Simultaneously, the second airflow generating device 5 draws in the smaller third particles 29 through the second receiving chamber 26, ensuring the effective separation of the two types of particles. The separation process is accomplished without the need for physical impact, thus avoiding the particle breakage and rebound problems that may occur in traditional impactors.

[0063] In some embodiments, the submicron particle collection device further includes a first air outlet 30, and 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.

[0064] It is understood that the first air outlet 30 may be a structure in a submicron particle collection device, configured to draw the second particles 28 from the first receiving chamber 24 through airflow and direct them to a target device. For example, the first air outlet 30 may be a variety of outlets, such as a pipe, a valve, or a filter, and may have various diameters and configurations.

[0065] It is understood that the second particulate matter 28 within the first holding chamber 24 may refer to particulate matter separated by a submicron particle collection device and entering 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 can be formed through the condensation or condensation of water vapor in the atmosphere. Specifically, when water vapor cools under specific temperature and humidity conditions, it condenses into small droplets, the diameter of which typically falls within the submicron range. In the atmosphere, aerosol particles (such as dust and salt particles) provide condensation nuclei, and water vapor condenses on these particles to form cloud droplets. Therefore, the second particulate matter 28 will include these aerosol particles and the submicron cloud droplets formed by them.

[0066] 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, etc.

[0067] It is understandable that since temperature changes affect the saturation of water vapor, thereby affecting 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 are stable 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 can be an ideal temperature value set according to experimental or application requirements. In meteorological research, the target temperature can be related to meteorological conditions, cloud droplet formation mechanism or experimental design. For example, some studies may need to be carried out under conditions close to ambient temperature to more realistically reflect the natural state. However, this 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.

[0068] It is understandable that since changes in humidity directly affect the size and number of cloud droplets, too low humidity may cause cloud droplets to evaporate, while too high humidity may cause cloud droplets to grow excessively, thereby affecting their usability in meteorological research or other applications. The humidity control device in this embodiment can maintain the humidity of the submicron cloud droplets in the second particulate matter 28 at a target value. For example, the humidity control device may include a humidifier, a dehumidifier, a humidity sensor, etc. The target humidity can 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 humidity setting can also be based on the required experimental conditions to observe the behavior and characteristics of cloud droplets at a specific humidity. However, this 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.

[0069] It is understood that the target device may refer to a device or system downstream of the submicron particle collection device, which can be used to process, utilize, or analyze particulate matter entering through the first air outlet 30. The function of this device can vary depending on the application requirements. For example, the target device may include, but is not limited to: a collection device (for collecting and storing separated particulate matter, such as a filter or collection container), an analysis device (an instrument for performing component analysis or property detection on particulate matter, such as a mass spectrometer or particle size analyzer), a reaction device (equipment for chemically reacting or further processing particulate matter, such as a reactor or catalytic device), a gas processing device (for processing gas flows associated with particulate matter, such as exhaust gas treatment equipment or gas purification equipment), and an agricultural application device (equipment for spraying pesticides or other bioactive substances, utilizing separated particulate matter for precise application, etc.). However, the present application is not limited to these, and those skilled in the art can adjust or configure the target device according to specific needs.

[0070] In this embodiment, the submicron particle collection device allows the second particles 28 to be effectively aspirated and transported to the target device through the first air outlet 30. Simultaneously, a growth environment device 10 is provided to regulate temperature and humidity, thereby effectively controlling and maintaining submicron cloud droplets. This significantly improves the quality and stability of collected submicron cloud droplets, ensuring their effectiveness in subsequent applications. This is particularly true in meteorological research or environmental monitoring, providing more accurate and reliable data and, in turn, higher-quality samples for research in related fields. Furthermore, the flexible design of the target device makes it suitable for a variety of fields, including environmental monitoring, meteorological research, agriculture, and materials science, enhancing its broad application potential.

[0071] 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 .

[0072] In some embodiments, the humidity regulating device may include a third accommodating chamber 7 and a fourth accommodating chamber 105. The third accommodating chamber 7 may be used to accommodate the second particles 28 after passing through the first accommodating chamber 24. The fourth accommodating chamber 105 is used to accommodate the second particles 28 after passing through the third accommodating chamber 7. Both the third accommodating chamber 7 and the fourth accommodating chamber 105 have a water-retaining layer 12. The water-retaining layer 12 is used to maintain the humidity in the third accommodating chamber 7 and the fourth accommodating chamber 105. The temperature regulating device may be arranged outside the fourth accommodating chamber 105 to control the temperature in the fourth accommodating chamber 105. The second particles 28 pass through the third accommodating chamber 7 and the fourth accommodating chamber 105 in sequence. The temperature difference between the third accommodating chamber 7 and the fourth accommodating 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.

[0073] It is understood that the third accommodating chamber 7 can be a space for accommodating the second particulate matter 28 collected after passing through the first accommodating chamber 24. Its design purpose is to provide a closed environment for subsequent humidity and temperature adjustment. For example, the third accommodating chamber 7 can be a cylindrical cavity, a square cavity, or other polygonal cavity, but the present application is not limited to this. That is, those skilled in the art can adjust or configure it according to specific needs.

[0074] It is understandable that the fourth holding chamber 105 can be a space for accommodating the second particles 28 after being processed by the third holding chamber 7, further providing the necessary humidity and temperature regulation to promote the growth of the particles. For example, the shape of the fourth holding chamber 105 can be the same as or different from that of 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 the 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.

[0075] It is understood that the water-retaining layer 12 can be a material or structure disposed within the third and fourth accommodating chambers 7 and 105 that effectively absorbs and releases moisture to maintain the humidity within the chambers within a target range. For example, the water-retaining layer 12 can be composed of a highly hygroscopic material, such as a polymer or silica gel, but this application is not limited thereto, and those skilled in the art can adjust or configure this material based on specific needs. Humidity sensors can also be disposed in the third and fourth accommodating chambers 7 and 105 to monitor real-time humidity changes and automatically adjust the moisture release of the water-retaining layer 12 via a control system to maintain stable humidity.

[0076] It is understood that the temperature regulating device can be designed as an electric heater or a refrigeration device, which can adjust the temperature of the fourth receiving chamber 105 in real time according to demand. The device can automatically adjust through a temperature sensor feedback system to ensure that the temperature is always maintained at the target value.

[0077] In some embodiments, the temperature control device may include a first temperature control layer 106 and a second temperature control layer 8. The first temperature control layer 106 is located outside the third accommodating chamber 7, and the second temperature control layer 8 is located outside the fourth accommodating chamber 105. 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 of the second temperature chamber. The first temperature control layer 106 and the second temperature control layer 8 can be used to control different temperatures to obtain a target temperature difference.

[0078] It is understood that the target temperature difference may refer to the temperature difference set between the third accommodating chamber 7 and the fourth accommodating chamber 105. 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 this temperature difference can be adjusted according to experimental requirements to ensure optimal particle growth conditions, but the present application is not limited thereto. That is, those skilled in the art can adjust or set it according to specific needs.

[0079] 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.

[0080] In this embodiment, by introducing the third and fourth accommodating chambers 7 and 105 and providing a water-retaining layer 12 within these two chambers, humidity within the system can be effectively maintained. This structural design enhances control over submicron cloud droplets, ensuring a suitable humidity environment within the various accommodating chambers, thereby promoting their water absorption and growth, ultimately 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 resulting particles meet specific application requirements.

[0081] In some embodiments, the first temperature control layer 106 is a constant temperature control layer, and the second temperature control layer 8 is a cooling 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. 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. The target particles intercepted by the second collection net 107 can enter the third collection chamber 16 under the action of gravity.

[0082] It is understood that temperature fluctuations may cause changes in water vapor saturation, thereby affecting the formation and stability of cloud droplets. The constant temperature control layer in this embodiment can be a device capable of maintaining a stable, constant temperature. This constant temperature control layer ensures that the temperature of the second particles 28 does not fluctuate due to changes in the external environment during the collection and growth process. 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, ensuring that the particles remain stable in an ideal temperature environment, thereby improving collection efficiency and particle quality.

[0083] It is understood that lower temperatures make it easier for water vapor to condense into cloud droplets, promoting their growth. The cooling layer in this embodiment can be a device or material capable of lowering temperature. This layer provides a suitable low-temperature environment for the second particles 28, promoting the absorption and growth of submicron cloud droplets. By lowering the temperature, the cooling layer creates an environment suitable for cloud droplet growth, ensuring that the physical properties and size of the target particles ultimately collected meet the desired requirements.

[0084] 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 the cloud droplets to evaporate or become unstable. 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.

[0085] It will be appreciated that the second collection net 107 can intercept target particles formed after passing through the growth environment device 10. Its mesh structure can be designed with varying pore sizes to accommodate particles of varying sizes, ensuring that particles larger than a certain size are captured. By configuring meshes with varying pore sizes, the second collection net 107 can classify and separate passing particles, ensuring that the ultimately collected particles possess a certain degree of uniformity and specific physical properties. This is crucial for subsequent research and applications (such as meteorological research and environmental monitoring).

[0086] Gravity sedimentation: The third collection chamber 16 serves as a container that can use the force of 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 carried away again, and can effectively store and accumulate them. Moreover, the third collection chamber 16 of this embodiment can not only be a place to collect target particles, but also serve 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.

[0087] This embodiment effectively controls and adjusts the growth environment of particulate matter 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 target temperature difference to five to ten degrees Celsius, thereby ensuring the stability and effectiveness of the target particles within a specific temperature range. This 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 ultimately collected meet specific application requirements, thereby improving the overall performance and practical value of the collection device.

[0088] 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 accommodating 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 through the water inlet of the water retention layer 12 and send it into the water retention layer 12. The water outlet of the water retention layer 12 is used to circulate the water in the water retention layer 12 and inject it into the water storage device 11.

[0089] It will be appreciated that the water-retaining layer 12 may be provided with a water inlet and outlet to facilitate water circulation. The water storage device 11 may be disposed outside the fourth housing chamber 105 and connected to the water-retaining layer 12 via a water circulation device 4. This water circulation device 4 circulates water from the water storage device 11 into the water-retaining layer 12, thereby maintaining the ideal humidity level in the water-retaining layer 12. This effectively maintains the activation conditions of the particles while ensuring the stability and integrity of the particles throughout the separation process.

[0090] The outlet of the water-retaining layer 12 circulates excess water in the water-retaining layer 12 back to the water storage device 11, ensuring a constant balance of water in the system and preventing the activation of particles from being affected by excess or insufficient water. This not only improves the efficiency of the system but also enhances its reliability in practical applications.

[0091] In this embodiment, the water storage device 11 can move excess water in the water retention layer 12 back into the middle water storage device 11 , thereby realizing water circulation in the growth environment device 10 .

[0092] In a preferred embodiment, a working process of the submicron particle collection device may be as follows:

[0093] 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 collection net 102 and enter the cloud droplet collection 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 and nucleated) enter the first separator 14 under the action of the first airflow generating device 1 and / or the second airflow generating device 5.

[0094] Secondly, the airflow entering the first separator 14 is cut. The set cut size can be the size of third particles 29 (for example, particles with a size of one micron or less that have not activated nucleation). Particles smaller than or equal to the size of the third particles 29 are discharged through the air path, while second particles 28 (for example, submicron cloud droplets with a size of less than two to three microns) are allowed to enter the growth environment device 10. First particles are cloud droplets with a size greater than 2-3 microns, second particles are submicron cloud droplets with a size less than 2-3 microns and greater than 1 micron, and third particles are particles with a size of 1 micron or less that have not activated nucleation.

[0095] Thirdly, the growth environment device 10 is provided with a constant temperature water tank, which can adjust the temperature and relative humidity of the second particulate matter 28 (for example, submicron cloud droplets with a particle size of 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.

[0096] 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.

[0097] 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) passing 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.

[0098] 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.

[0099] It should be noted that this application does not specifically limit the size of submicron particles. Those skilled in the art may adjust their size based on actual circumstances. The three-micron example above is merely an example of the possible sizes of submicron particles in this application, and is not limited to the examples described above.

[0100] Based on the same concept, the technical solution of the present invention also provides a submicron cloud droplet collection system. It is 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.

[0101] In some embodiments, as 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, and the second accommodating chamber 26 of the first separator 14 is provided with a second airflow generating device 5 connected thereto. A second float flowmeter 6 is provided between the second airflow generating device 5 and the second accommodating chamber 26. The second airflow generating device 5 is used to discharge the third particulate matter 29 in the second accommodating chamber 26. 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 comprises a first collection net 102, a first collection chamber 15, and a second collection chamber 3. A water-retaining layer 12 is disposed on the outer layer of the growth environment device 10. A second temperature control layer 8 is connected to the water-retaining layer 12, which is connected to a temperature controller. A water storage device 11 is located between the growth environment device 10 and the third storage chamber 7. A water circulation device 4 is used to connect the water storage device 11, the water-retaining layer 12, and the third storage chamber 7. The growth environment device 10 is also connected to a second collection net 107, which includes a target air inlet 101, a first collection net 102, and a third collection chamber 16. The third collection chamber 16 is used to collect submicron cloud droplets grown in the growth environment device 10. It is understood that a vacuum pump can be an option for the first airflow generating device 1 and / or the second airflow generating device 5. Its primary function is to create a negative pressure environment, promoting airflow within the device, thereby effectively guiding the separation of particles in the gas. The use of a vacuum pump ensures the stability and controllability of the airflow, providing 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.

[0102] 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 can also be a blower (using a fan or centrifugal principle to generate airflow, 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 through a rotating 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, those skilled in the art can set or adjust according to actual conditions.

[0103] It is understood that the first and second float flowmeters 2 and 6 are used to monitor the flow rates of the first and second airflows, respectively. The flowmeters can display the airflow rate in real time by raising and lowering the floats, offering ease of operation and high accuracy. The presence of the flowmeters allows operators to monitor airflow changes at all times, allowing them to adjust airflow parameters in a timely manner to achieve optimal separation results. Furthermore, real-time flow monitoring helps ensure that the equipment operates within a safe range, avoiding poor particle separation results caused by airflow fluctuations.

[0104] 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.

[0105] Step S1, by allowing the first size of cloud droplets in the gas of the first cloud sampler to be intercepted by the first collection net of the first cloud sampler to form a submicron cloud droplet collection bottle, the first collection 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.

[0106] Step S2, submicron cloud droplets and small particles of the second size are allowed to enter the first cloud sampler through the first collection 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.

[0107] In step S3, submicron cloud droplets of the second size are separated from small particles through a 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 of the size of the collected cloud droplets, ensuring the purity of subsequent processing, and thus improving the reliability of the experiment or application.

[0108] In step S4, the submicron cloud droplets are placed in an environment with a target humidity and temperature, where they grow in volume before being collected. By placing the submicron cloud droplets in a specific humidity and temperature environment to allow them to grow in volume, this environmental condition can be effectively utilized to promote the aggregation and growth of the cloud droplets, facilitating subsequent research or application.

[0109] In some embodiments, as Figure 6 As shown, step S4 may further include the following steps.

[0110] Step S41 : placing submicron cloud droplets in a first environment with a first temperature and a first humidity for a first target time period.

[0111] The first temperature may be the 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 the cloud droplets to promote the volume growth of the cloud droplets.

[0112] The first humidity may be the relative humidity value set in step S41, which indicates the content of water vapor in the air. The first humidity may be high enough to ensure that the submicron cloud droplets can absorb water, thereby promoting the growth of their volume.

[0113] 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 submicron cloud droplets are located during the initial growth phase, and may provide suitable conditions for the growth of cloud droplets.

[0114] The first target duration can be a predetermined time that submicron cloud droplets remain in the first environment. This first duration can be determined through experimental or theoretical analysis to ensure that the cloud droplets have sufficient time to absorb water and increase in volume within this environment. The selection of this first target duration can affect the ultimate size and mass of the cloud droplets. However, this application does not limit the specific duration of the first target duration; those skilled in the art may adjust or set it based on specific needs.

[0115] 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.

[0116] The second temperature may be the specific temperature value set in step S42 and may be lower than the first temperature. Lowering the temperature may promote further growth of submicron cloud droplets or alter their physical properties. Lowering the temperature may cause surface moisture to condense, further increasing the volume of the cloud droplets.

[0117] The second humidity can be the relative humidity value set in step S42. The second humidity can be the same as or different from the first humidity. Changes in humidity can affect the water absorption capacity and growth rate of cloud droplets. The second humidity can be the same as or different from the first humidity. If the second humidity is the same as the first humidity, the cloud droplet growth process may be more stable; if it is different, the water absorption rate and final size of the cloud droplets may be affected. However, this application is not limited to this, and those skilled in the art may adjust or set the humidity according to specific needs.

[0118] The second environment may be the new environmental conditions 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.

[0119] The second target duration can be a predetermined time that the submicron cloud droplets remain in the second environment. This duration is intended to ensure that the cloud droplets have sufficient time to grow, absorb water, or undergo other physical changes in the new environment.

[0120] In one possible scenario, the first temperature in this embodiment can be greater than the second temperature, the second humidity can be equal to the first humidity, and the second target duration can be equal to the first target duration. In this case, submicron cloud droplets can absorb moisture at higher humidity and further increase in volume at lower temperatures. Ultimately, larger and more uniform cloud droplets may be obtained.

[0121] 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 at low humidity is limited, which may lead to a decrease in their water absorption capacity. The cloud droplets ultimately formed are smaller in volume, which can provide a matrix for some special research.

[0122] In other possible cases, the first temperature in this embodiment can be equal to the second temperature, the second humidity can be greater than the first humidity, and the second target duration can 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.

[0123] 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 resulting cloud droplet volume may be reduced, which can provide a matrix for some special research.

[0124] In this embodiment, by placing submicron cloud droplets in different temperature and humidity environments and adjusting them in stages, the growth process of the 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 appropriate humidity and temperature, thereby achieving effective volume growth. 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.

[0125] It is 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 related objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The singular forms "a", "an", and "the" are also intended to include plural forms, unless the context clearly indicates otherwise.

[0126] It will be further understood that the terms "first," "second," and the like are used to describe various types of information, but such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another and do not imply a particular order or level of importance. In fact, the terms "first," "second," and the like are fully interchangeable. For example, first information could be referred to as second information, and similarly, second information could be referred to as first information without departing from the scope of the present invention.

[0127] It can be further understood that the terms "center", "longitudinal", "lateral", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this 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 operate in a specific orientation.

[0128] It is further understood that, unless otherwise specified, “connection” includes a direct connection where there are no other components between the two elements, and also includes an indirect connection where there are other elements between the two elements.

[0129] It should be further understood that although the operations in the technical solutions of the present invention are described in a particular order in the accompanying drawings, this should not be construed as requiring that the operations be performed in the particular order shown or in a serial order, or that all of the illustrated operations be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0130] 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 that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0131] It should be understood that the present invention is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes can 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 method for collecting submicron cloud droplets, characterized in that: The invention discloses a method for collecting submicron cloud droplets using a submicron particle collection device. The submicron particle collection device 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 a first target gas entering through the target air inlet. Second particles and 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 that of the second particles and the third particles. The first collection chamber is provided 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. 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, wherein 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 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; The submicron particle collection device further includes a first air outlet, a first airflow generating device connected to the first accommodating chamber via the first air outlet, and the first airflow device is used to suck out second particles in the first accommodating chamber, so that 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, the second particles are submicron cloud droplets with a particle size less than 2-3 microns and greater than 1 micron; and the third particles are particles with a particle size of 1 micron or less 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 including a temperature regulating device and a humidity regulating device, the temperature regulating device being used to maintain the submicron cloud droplets in the second particle matter at a target temperature, and the humidity regulating device being used to maintain the submicron cloud droplets in the second particle matter at a target humidity; the humidity regulating device including a third accommodating chamber and a fourth accommodating chamber, the third accommodating chamber being used to accommodate the second particle matter after passing through the first accommodating chamber, and the fourth accommodating chamber being used to accommodate the second particle matter after passing through the third accommodating chamber, both the third accommodating chamber and the fourth accommodating chamber having a water-retaining layer therein, the water-retaining layer being 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 particle matter passes through the third accommodating chamber and the fourth accommodating chamber in sequence, the temperature difference between the third accommodating chamber and the fourth accommodating chamber being a target value, the temperature difference of the target value being able to enable the submicron cloud droplets to absorb water and grow into target particle matter, the size of the target particle matter being larger than the size of the second particle matter; The inertia of the second airflow during its deflection causes the second particles to maintain their original state of motion. When the second airflow passes through the deflection portion, the change in direction of the second airflow causes the smaller third particles to deflect in the same direction as the second airflow and enter the second receiving chamber. The second particles continue to move along their original airflow path before the deflection portion, and are discharged into other channels or the first receiving chamber. 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 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 water in the water retention layer into the water storage device; The target device includes a second collection net and a third collection chamber, and the third collection chamber uses gravity to collect the target particles intercepted by the second collection net into the chamber; The submicron particle collection device enables the second particles to be effectively sucked out through the first air outlet and transported to the target device. At the same time, a growth environment device is provided to adjust the temperature and humidity, thereby achieving effective control and maintenance of submicron cloud droplets. The method for collecting submicron cloud droplets using a submicron particle collection device comprises the following steps: Step S1, intercepting cloud droplets of a first size in the gas of the first cloud sampler by a first collection net of the first cloud sampler into a submicron cloud droplet collection bottle; the first collection net of the first cloud sampler can effectively intercept cloud droplets of a certain size, ensuring that larger particles do not interfere with the collection process of submicron cloud droplets; Step S2: Submicron cloud droplets and small particles of a second size are passed through a first collection net into a first cloud sampler, where the second size is smaller than the first size; the submicron cloud droplets of the second size enter the first cloud sampler for subsequent separation by a first separator. Step S3, separating submicron cloud droplets of a second size from the 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; Submicron cloud droplets are placed in an environment with target humidity and target temperature to allow the submicron cloud droplets to grow in volume and then be collected, including: Step S41, temporarily placing submicron cloud droplets in a first environment at a first temperature and a first humidity for a first target time period; the first temperature is a specific temperature value set in step S41, or a temperature selected to promote the growth and water absorption of submicron cloud droplets; the first humidity is a relative humidity value set in step S41, indicating the water vapor content in the air; the first environment is the specific environmental condition created in step S41, which is a combination of the first temperature and the first humidity; In step S42, the submicron cloud droplets that have been temporarily retained in the first environment for a target time are placed in a second environment with a second temperature and a second humidity and temporarily retained for the 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; the second temperature is the specific temperature value set in step S42, and the second temperature is lower than the first temperature; the second humidity is the relative humidity value set in step S42, and the second humidity is the same as or different from the first humidity; the second environment is the new environmental condition created in step S42, and the new environmental condition created in step S42 includes a combination of the second temperature and the second humidity.

2. The method for collecting submicron cloud droplets 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 part through the second accommodating chamber. The second airflow can suck the third particles entering the first accommodating chamber into the second accommodating chamber from the first turning part. 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 method for collecting submicron cloud droplets according to claim 1, characterized in that: The first temperature is greater than the second temperature, the second humidity is less than the first humidity, and the second target duration is less than the first target duration.

4. The method for collecting submicron cloud droplets according to claim 1, characterized in that: The first temperature is equal to the second temperature, the second humidity is greater than the first humidity, and the second target duration is greater than the first target duration.

5. The method for collecting submicron cloud droplets according to claim 1, characterized in that: The first temperature is lower than the second temperature, and the second humidity is lower than the first humidity.

6. The method for collecting submicron cloud droplets according to claim 1, 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 inside the second temperature cavity.

7. The method for collecting submicron cloud droplets according to claim 6, 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 second collection net can intercept the target particles after passing through the growth environment device, and the third collection chamber is set 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.

8. A submicron cloud droplet collection system, characterized in that: The method of using the submicron cloud droplet collection system includes the submicron cloud droplet collection method according to any one of claims 1 to 7.

9. The submicron cloud droplet collection system according to claim 8, characterized in that: The first air flow generating device is connected to the first float flowmeter, and the air flow of the first air flow 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, and the third accommodating chamber is connected to the first accommodating chamber of the first separator. A second air flow generating device is provided outside the second accommodating chamber of the first separator, and a second float flowmeter is provided between the second air flow generating device and the second accommodating chamber. The second air flow 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 provided on the outer layer of the growth environment device, and a second temperature control layer is connected to the outside of the water retaining layer. The second temperature control layer is connected to a temperature controller. A water storage device is provided between the growth environment device and the third accommodating chamber. The 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 a target air inlet, a first collecting net and a third collecting chamber. The third collecting chamber is used to collect submicron cloud droplets grown in the growth environment device.

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