Device for collecting aerosol in air
By combining the fan and electric field components, the problem of low efficiency in collecting tiny aerosols by cyclone samplers is solved, and efficient aerosol collection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING DANA AURORA TECH CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-12
AI Technical Summary
Existing cyclone samplers have low efficiency in collecting small, lightweight aerosols.
By combining a fan and an electric field component, the combined effect of cyclone motion and electric field force is used to promote the movement of aerosols towards the inner wall of the gas collection shell, thereby improving the collection efficiency.
It significantly improves the collection efficiency of aerosols, enabling efficient collection of aerosols in the air.
Smart Images
Figure CN224231378U_ABST
Abstract
Description
Technical Field
[0001] The embodiments of this utility model relate to the field of airborne aerosol collection technology, and more specifically, this utility model relates to a device for collecting airborne aerosols. Background Technology
[0002] The collection and analysis of aerosols in the air are of paramount importance in current fields such as environmental monitoring, healthcare, and air quality control. Aerosols are tiny particulate matter suspended in the air, existing in both solid and liquid forms. They typically exist as aerosols and are widely distributed throughout the air. Airborne aerosols not only contain various pollutants but may also carry pathogenic microorganisms such as viruses and bacteria, posing a threat to human health and environmental safety.
[0003] Currently, there are cyclone samplers on the market that utilize the inertial centrifugal force of aerosols during airflow rotation to separate and capture them. These cyclone samplers typically employ a specific airflow channel and rotating structure design to create a cyclone motion as the air sample passes through. Because aerosols have a relatively large mass, they experience a significant inertial centrifugal force during rotation, causing them to be thrown against the channel walls and captured. However, although cyclone samplers theoretically have a certain capture effect, in practical applications, their collection efficiency is often low for small, lightweight objects like aerosols. Utility Model Content
[0004] To address one or more of the technical problems mentioned above, this invention provides a device for collecting aerosols in the air. The device uses a fan combined with an electric field component to move more and faster aerosols in the air towards the inner wall of the gas collection shell, thus achieving efficient collection of aerosols in the air.
[0005] This utility model provides a device for collecting aerosols in the air, the device comprising:
[0006] The gas collection shell includes an air inlet and an air outlet at its top, and a release port at its bottom;
[0007] A fan is installed inside the air collecting shell and can guide the air from the air inlet into the air collecting shell and then out from the air outlet to the outside of the air collecting shell, so as to cause the air to generate a cyclone motion inside the air collecting shell, thereby causing the aerosol in the air to move towards both the inner wall of the air collecting shell and the release port under the influence of the cyclone motion.
[0008] An electric field component, disposed within the gas collecting shell, is capable of imparting a charge to the aerosols within the gas collecting shell when the air enters the gas collecting shell, and using the electric field to assist the cyclone motion to move more and faster the charged aerosols toward the inner wall of the gas collecting shell.
[0009] Furthermore, the electric field assembly includes a concentric annular electrode disposed inside or outside the gas collecting shell, and a cylindrical electrode fixed at the central axis of the gas collecting shell, wherein the annular electrode and the cylindrical electrode have opposite polarities.
[0010] Furthermore, the electric field assembly also includes an electric needle disposed on the air inlet and arranged radially along the gas collecting shell, the electric needle being used to impart a charge to the aerosol and having the same polarity as the cylindrical electrode.
[0011] Furthermore, the gas collecting shell includes a shell having the air inlet and the release outlet, a partition disposed inside the shell and dividing its interior into a collection chamber and a power chamber, a connecting hole disposed on the partition and connecting the top of the collection chamber and the bottom of the power chamber, and a hollow rotating shaft rotatably disposed on the top of the shell and passing through the shell and the partition. The release outlet is connected to the bottom of the collection chamber, and the hollow portion of the hollow rotating shaft is the air outlet. The hollow rotating shaft includes an internal portion inside the gas collecting shell and an external portion outside the gas collecting shell.
[0012] The fan includes a motor fixedly mounted relative to the air collection shell, a drive gear mounted on the motor shaft, a driven gear fixedly mounted on the external part of the hollow shaft and meshing with the drive gear, and an impeller fixedly mounted on the internal part of the hollow shaft. When the impeller rotates, it can guide the air entering from the air inlet through the power chamber, the connecting hole, and the collection chamber in sequence, and then generate a cyclone in the collection chamber before flowing out through the air outlet.
[0013] Furthermore, the collection chamber includes a cylindrical region connected to the connection hole and a conical region connected to the cylindrical region and connected to the release port. The annular electrode surrounds the cylindrical region and is fixedly sleeved outside the collection chamber, and the cylindrical electrode is located at the center of the cylindrical region.
[0014] Furthermore, the electric needle is disposed within the cylindrical region and located below the connecting hole.
[0015] Furthermore, the connecting hole is adjacent to the outer edge of the cylindrical region of the collection chamber.
[0016] Furthermore, the cylindrical electrode is connected to the inner wall of the housing via a support rod.
[0017] Furthermore, the inner diameter of the hollow rotating shaft is larger than the outer diameter of the cylindrical electrode.
[0018] Furthermore, the device also includes a valve disposed on the gas collecting shell and connected to the release port.
[0019] This embodiment provides a device for collecting aerosols in the air, which cleverly integrates the functions of a fan and an electric field component. Inside the device, the fan generates a strong cyclone effect in the air collection shell, driving the air to form a cyclone motion. Given the mass characteristics of aerosols, they are affected by the inertial centrifugal force generated during the cyclone motion, thus being pushed towards the inner wall of the air collection shell. Furthermore, the electric field component constructs an electrostatic field to charge the aerosols entering the air collection shell, resulting in a greater number of aerosols in the air being charged, thereby increasing the number of aerosols entering the air collection shell affected by the electric field component. The electric field component also promotes these charged aerosols to move more rapidly and in greater quantities towards the inner wall of the air collection shell under the influence of the electric field force. This dual-action mechanism (i.e., the physical effect of the cyclone motion and the electric field effect) works synergistically, greatly accelerating the aerosol accumulation process towards the inner wall of the air collection shell, significantly improving the collection efficiency of aerosols in the air. Attached Figure Description
[0020] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:
[0021] Figure 1 This diagram illustrates the working state of a device for collecting aerosols in the air, as provided in an embodiment of the present invention.
[0022] Figure 2 A cross-sectional view of an apparatus for collecting aerosols in the air, provided by an embodiment of the present invention, is shown.
[0023] 1. Gas collection shell; 11. Shell; 111. Air inlet; 112. Release port; 113. Collection chamber; 1131. Cylindrical region; 1132. Conical region; 114. Power chamber; 12. Partition; 121. Connecting hole; 13. Hollow rotating shaft; 131. Air outlet;
[0024] 2. Fan; 21. Motor; 22. Drive gear; 23. Driven gear; 24. Impeller;
[0025] 3. Electric field assembly; 31. Ring electrode; 32. Cylindrical electrode; 33. Electrode;
[0026] 4. Support rod;
[0027] 100. Aerosols. Detailed Implementation
[0028] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.
[0029] Figure 1 This diagram illustrates the operational status of a device for collecting airborne aerosols 100 provided in this embodiment. For ease of understanding, [the diagram is shown]. Figure 1 In this diagram, S represents the direction of airflow, and F represents the direction of the electric field force. For example... Figure 1 As shown, this embodiment provides a device for collecting aerosols 100 in the air. The device includes a gas collecting shell 1, a fan 2, and an electric field assembly 3. The gas collecting shell 1 includes an air inlet 111 and an air outlet 131 at its top, and a release port 112 at its bottom. The fan 2 is located inside the gas collecting shell 1 and guides air from the air inlet 111 into the gas collecting shell 1 and then out through the air outlet 131 to the outside of the gas collecting shell 1, thereby inducing a cyclone motion of air within the gas collecting shell 1. This causes the aerosols 100 in the air to move towards both the inner wall of the gas collecting shell 1 and the release port 112 under the influence of the cyclone motion. The electric field assembly 3 is located inside the gas collecting shell 1 and can charge the aerosols 100 inside the gas collecting shell 1 when air enters it. It also uses the electric field to assist the cyclone motion in moving more and faster charged aerosols 100 towards the inner wall of the gas collecting shell 1.
[0030] This embodiment provides a device for collecting aerosols 100 in the air, which cleverly integrates the functions of a fan 2 and an electric field component 3. Inside the device, the fan 2 generates a strong cyclone effect in the air collection shell 1, driving the air to form a cyclone motion. Given that the aerosols 100 have certain mass characteristics, they are affected by the inertial centrifugal force generated during the cyclone motion, thus being pushed towards the inner wall of the air collection shell 1. On this basis, the electric field component 3 further constructs an electrostatic field to charge the aerosols 100 entering the air collection shell 1, so that more aerosols 100 in the air are charged, thereby increasing the number of aerosols 100 entering the air collection shell 1 that are affected by the electric field component 3. Furthermore, the electric field component 3 can also cause these charged aerosols 100 to move more rapidly and in greater numbers towards the inner wall of the air collection shell 1 under the action of the electric field force. This dual-action mechanism (i.e., the physical action of cyclone motion and the electric field action of electric field force) works synergistically to greatly accelerate the aggregation process of aerosol 100 onto the inner wall of the gas collecting shell 1, and significantly improve the collection efficiency of aerosol 100 in the air.
[0031] Furthermore, the electric field component 3 includes an annular electrode 31 concentrically disposed inside or outside the gas collecting shell 1, and a cylindrical electrode 32 fixed at the central axis of the gas collecting shell 1, wherein the annular electrode 31 and the cylindrical electrode 32 have opposite polarities. The cylindrical electrode 32 causes the aerosol 100 to be repelled by the cylindrical electrode 32 when it is near the cylindrical electrode 32, causing the aerosol 100 to move towards the inner wall of the gas collecting shell 1. The annular electrode 31 causes the aerosol 100 to be attracted by the annular electrode 31 when it is near the annular electrode 31, causing the aerosol 100 to move towards the inner wall of the gas collecting shell 1. The annular electrode 31 and the cylindrical electrode 32 work together to cause the aerosol 100 at various positions inside the gas collecting shell 1 to move towards the inner wall of the gas collecting shell 1 under the action of the electric field force formed by the annular electrode 31 and the cylindrical electrode 32.
[0032] Furthermore, the electric field assembly 3 also includes an electric needle 33 disposed on the air inlet 111 and arranged radially along the gas collecting shell 1. The electric needle 33 is used to impart a charge to the aerosol 100. The electric needle 33 allows a greater number of aerosols 100 entering the gas collecting shell 1 from the air inlet 111 to be charged, thereby allowing a greater number of aerosols 100 to be subjected to the electric field force of the annular electrode 31 and the cylindrical electrode 32. This, in turn, causes more aerosols 100 to move towards the inner wall of the gas collecting shell 1, thus improving the collection efficiency of the device. The fact that the electric needle 33 and the cylindrical electrode 32 have the same polarity ensures that the polarity of the cylindrical electrode 32 is opposite to the polarity of the aerosol 100, thus enabling the cylindrical electrode 32 and the annular electrode 31 to work together to move the aerosol 100 to the inner wall of the gas collecting shell 1.
[0033] Preferably, the device further includes a valve (not shown) disposed on the gas collecting shell 1 and connected to the release port 112, wherein the opening and closing of the valve enables the device to selectively collect and release aerosol 100 according to actual production needs.
[0034] It should be noted that the valve can be any valve that achieves the above effects. This embodiment does not make any specific limitation on this. All valves that can achieve the above effects are within the protection scope of this disclosure.
[0035] Figure 2 A cross-sectional view of an apparatus for collecting airborne aerosols 100 provided in this embodiment is shown. Figure 2 and combined Figure 1 As shown, the gas collecting shell 1 includes a shell 11 with an air inlet 111 and a release port 112, a partition 12 disposed inside the shell 11 and dividing its interior into a collection chamber 113 and a power chamber 114, a connecting hole 121 disposed on the partition 12 and connecting the top of the collection chamber 113 and the bottom of the power chamber 114, and a hollow rotating shaft 13 rotatably disposed on the top of the shell 11 and passing through the shell 11 and the partition 12. The release port 112 is connected to the bottom of the collection chamber 113, and the hollow part of the hollow rotating shaft 13 is an air outlet 131. The hollow rotating shaft 13 includes an internal part inside the gas collecting shell 1 and an external part outside the gas collecting shell 1. Air enters the power chamber 114 of the gas collection shell 1 through the air inlet 111, and after being powered by the power chamber 114, it enters the collection chamber 113 of the gas collection shell 1 through the connection hole 121 provided on the partition 12, so as to collect the aerosol 100 in the collection chamber 113. The air powered by the power chamber 114 first moves in a spiral vortex motion (outer vortex) from the top of the collection chamber 113 (i.e., the location of the connection hole 121) to the bottom of the collection chamber 113 (i.e., the location of the release port 112). When the air reaches the bottom of the collection chamber 113, it turns and rotates along the central axis of the gas collecting shell 1 from the bottom of the collection chamber 113 to the top of the collection chamber 113 (inner vortex). Finally, it is discharged from the hollow part of the hollow rotating shaft 13 (i.e., the air outlet 131), so that the aerosol 100 moves to the inner wall of the gas collecting shell 1 under the action of inertial centrifugal force during the vortex motion, and discharges the air other than the aerosol 100.
[0036] Specifically, the fan 2 includes a motor 21 fixedly mounted relative to the air collection housing 1, a drive gear 22 mounted on the shaft of the motor 21, a driven gear 23 fixedly sleeved on the outer part of the hollow shaft 13 and meshing with the drive gear 22, and an impeller 24 fixedly sleeved on the inner part of the hollow shaft 13. When the impeller 24 rotates, it guides the air entering from the air inlet 111 through the power chamber 114, the connecting hole 121, and the collection chamber 113 in sequence. Then, after generating a cyclone in the collection chamber 113, the air flows out through the air outlet 131. The motor 21 drives the drive gear 22 to rotate and transmits power to the impeller 24 through the driven gear 23 meshing with the drive gear 22, thereby driving the impeller 24 to rotate. This provides power to the air in the power chamber 114, causing the air to enter the collection chamber 113 and generate a cyclone motion.
[0037] Preferably, the collection chamber 113 includes a cylindrical region 1131 connected to the connection hole 121 and a conical region 1132 connected to the cylindrical region 1131 and the release port 112. The annular electrode 31 surrounds the cylindrical region 1131 and is fixedly sleeved on the outside of the collection chamber 113. The cylindrical electrode 32 is located at the center of the cylindrical region 1131. By providing the annular electrode 31 only in the cylindrical region 1131 and not in the conical region 1132, the production cost of the device can be reduced while ensuring that the collection efficiency of the device is effectively improved.
[0038] Specifically, the electric needle 33 is located in the cylindrical region 1131 and below the connection hole 121 to ensure that the aerosol 100 is charged when it enters the collection chamber 113, thereby enabling a larger number of aerosols 100 to be charged.
[0039] Preferably, the connection hole 121 is adjacent to the outer edge of the cylindrical region 1131 of the collection chamber 113, so that the power chamber 114 can more easily generate cyclone motion to enter the collection chamber 113.
[0040] Specifically, the cylindrical electrode 32 is connected to the inner wall of the housing 11 by the support rod 4, so that the cylindrical electrode 32 can be set at the central axis position of the gas collecting shell 1 without connecting with the bottom of the partition 12 and the collecting chamber 113, thereby avoiding the setting of the cylindrical electrode 32 from affecting the normal use of the gas outlet 131 and the release port 112.
[0041] Preferably, the inner diameter of the hollow rotating shaft 13 is larger than the outer diameter of the cylindrical electrode 32, so as to ensure that the air in the collection chamber 113 of the gas collecting shell 1 can be smoothly discharged through the hollow part of the hollow rotating shaft 13 (i.e., the air outlet 131), so as to reduce the situation where the air outlet 131 is blocked due to poor fixing of the cylindrical electrode 32, which would affect the air outlet 131 and prevent the air from being discharged.
[0042] In the foregoing description of this application, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "linked" should be interpreted broadly. For example, the term "linked" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this application, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0043] Based on the above description of this application, those skilled in the art will also understand that terms used, such as "upper," "top," "bottom," "inner," "outer," "radial," and "center," which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings of this application. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as a limitation on the present invention.
[0044] Furthermore, the terms "first" or "second," etc., used in this application to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as explicitly or implicitly indicating relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, or more, unless otherwise explicitly specified.
[0045] While various embodiments of the present invention have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and intent of the present invention. It should be understood that various alternatives to the embodiments of the present invention described herein may be employed in the practice of the present invention. The appended claims are intended to define the scope of protection of the present invention and therefore cover equivalents or alternatives within the scope of these claims.
Claims
1. A device for collecting aerosols in the air, characterized in that, The device includes: The gas collection shell includes an air inlet and an air outlet at its top, and a release port at its bottom; A fan is installed inside the air collecting shell and can guide the air from the air inlet into the air collecting shell and then out from the air outlet to the outside of the air collecting shell, so as to cause the air to generate a cyclone motion inside the air collecting shell, thereby causing the aerosol in the air to move towards both the inner wall of the air collecting shell and the release port under the influence of the cyclone motion. An electric field component, disposed within the gas collecting shell, is capable of imparting a charge to the aerosols within the gas collecting shell when the air enters the gas collecting shell, and using the electric field to assist the cyclone motion to move more and faster the charged aerosols toward the inner wall of the gas collecting shell.
2. The apparatus according to claim 1, characterized in that, The electric field assembly includes a concentric annular electrode disposed inside or outside the gas collecting shell, and a cylindrical electrode fixed at the central axis of the gas collecting shell, wherein the annular electrode and the cylindrical electrode have opposite polarities.
3. The apparatus according to claim 2, characterized in that, The electric field assembly also includes an electric needle disposed on the air inlet and arranged radially along the gas collecting shell. The electric needle is used to impart a charge to the aerosol and has the same polarity as the cylindrical electrode.
4. The apparatus according to claim 3, characterized in that, The gas collecting shell includes a shell having the air inlet and the air outlet, a partition disposed inside the shell and dividing its interior into a collection chamber and a power chamber, a connecting hole disposed on the partition and connecting the top of the collection chamber and the bottom of the power chamber, and a hollow rotating shaft rotatably disposed on the top of the shell and passing through the shell and the partition. The air outlet is connected to the bottom of the collection chamber, and the hollow portion of the hollow rotating shaft is the air outlet. The hollow rotating shaft includes an internal portion inside the gas collecting shell and an external portion outside the gas collecting shell. The fan includes a motor fixedly mounted relative to the air collection shell, a drive gear mounted on the motor shaft, a driven gear fixedly mounted on the external part of the hollow shaft and meshing with the drive gear, and an impeller fixedly mounted on the internal part of the hollow shaft. When the impeller rotates, it can guide the air entering from the air inlet through the power chamber, the connecting hole, and the collection chamber in sequence, and then generate a cyclone in the collection chamber before flowing out through the air outlet.
5. The apparatus according to claim 4, characterized in that, The collection chamber includes a cylindrical region connected to the connection hole and a conical region connected to the cylindrical region and the release port. The annular electrode surrounds the cylindrical region and is fixedly sleeved outside the collection chamber, and the cylindrical electrode is located at the center of the cylindrical region.
6. The apparatus according to claim 5, characterized in that, The electric needle is located within the cylindrical area and below the connecting hole.
7. The apparatus according to claim 5, characterized in that, The connection hole is adjacent to the outer edge of the cylindrical region of the collection chamber.
8. The apparatus according to claim 4, characterized in that, The cylindrical electrode is connected to the inner wall of the housing via a support rod.
9. The apparatus according to claim 4, characterized in that, The inner diameter of the hollow rotating shaft is larger than the outer diameter of the cylindrical electrode.
10. The apparatus according to claim 4, characterized in that, The device also includes a valve disposed on the gas collecting shell and connected to the release port.