Aerosol trapping device and trapping method
By designing an aerosol capture device including a suction assembly, a smoke exhaust pipe, a capture assembly and a peristaltic pump, the problems of insufficient liquid-gas contact and poor liquid circulation in the prior art are solved, and a more efficient aerosol absorption and capture effect is achieved.
Patent Information
- Application Number
- CN202311249545.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-26
- Publication Date
- 2025-03-28
AI Technical Summary
In the existing aerosol capture device, the contact between liquid and gas is insufficient, resulting in low aerosol absorption and capture efficiency, poor liquid circulation, making it difficult to fully mix and absorb aerosol components.
An aerosol capture device is designed, including a suction assembly, a smoke exhaust pipe, a capture assembly and a peristaltic pump. Through the combination of the piston structure and the peristaltic pump, the circulating flow of the extractant in the circuit is realized, and the contact and absorption of the aerosol and the extractant are enhanced.
The absorption and capture efficiency of aerosol is improved, ensuring that the extractant can fully mix and absorb the aerosol components, and improving the overall performance of the capture device.
Smart Images
Figure CN119715043A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of aerosol capture, and in particular to an aerosol capture device and a capture method. Background Art
[0002] Researching, testing and analyzing the composition of aerosols produced by cigarettes will help ensure the safety of cigarette products and improve human health. Researching, testing and analyzing aerosols produced by cigarettes requires capturing aerosols. In related technologies, the structural design of aerosol capture devices does not allow sufficient contact between the absorption liquid and the aerosol, thus affecting the aerosol absorption, capture capacity and efficiency. On the other hand, the aerosol capture devices in related technologies use gas flow as the driving force for the flow of liquid in the circuit, resulting in poor circulation of liquid in the circuit, making it difficult for the extractant to fully mix and absorb the aerosol components. Summary of the invention
[0003] In order to solve at least one of the above technical problems, the present application provides an aerosol capture device and a capture method, and the technical solution adopted is as follows.
[0004] The aerosol capture device provided in the present application includes a suction component, a smoke exhaust pipe, a capture component and a peristaltic pump, the suction component includes a collection chamber and a piston structure, the piston structure is movably arranged in the collection chamber, the collection chamber is provided with a first inlet for aerosol to flow in and a first outlet for aerosol to flow out; the smoke exhaust pipe is connected to the first outlet; the capture component includes a capture pipe and an exhaust pipe, the capture pipe is provided with a second inlet and a second outlet, the second inlet is connected to the smoke exhaust pipe, the exhaust pipe is provided with a third inlet and a third outlet and an exhaust port connected to an air source or the atmosphere, the second outlet is connected to the third inlet, and the third outlet is connected to the smoke exhaust pipe through a first pipeline; the peristaltic pump is connected to the first pipeline, the first pipeline is configured as a hose, and the peristaltic pump acts on the outside of the first pipeline.
[0005] In certain embodiments of the present application, the aerosol capture device includes a condensation component, the condensation component includes a first condensation zone and a second condensation zone, the capture pipe is arranged in the first condensation zone, and the exhaust pipe is arranged in the second condensation zone.
[0006] In certain embodiments of the present application, the first condensation zone and the second condensation zone are connected via a second pipeline and a third pipeline to form a closed loop, the second pipeline is configured as a hose, the peristaltic pump is connected to the second pipeline, and the peristaltic pump acts on the outside of the second pipeline.
[0007] In certain embodiments of the present application, the peristaltic pump is configured as a double-head peristaltic pump.
[0008] In certain embodiments of the present application, the suction assembly includes a three-way valve, one end of the three-way valve is connected to the collection chamber, and the other two ends of the three-way valve are respectively set as the first inlet and the first outlet.
[0009] In certain embodiments of the present application, the suction assembly includes a clamp, the clamp is used to clamp the cigarette, and the first inlet is connected to the clamp.
[0010] In certain embodiments of the present application, the aerosol capture device includes a drive assembly, which is connected to the piston structure and can drive the piston structure to reciprocate in the collection chamber.
[0011] In certain embodiments of the present application, the capture tube is configured as a spiral tube.
[0012] The capture method provided in this application is implemented by an aerosol capture device, and the capture method includes the following workflow:
[0013] Add an extractant of set concentration and volume into the collection tube, start the aerosol collection device to preheat for a set number of times, and perform capacity calibration after the preheating is completed;
[0014] Suction movement, opening the first inlet, closing the first outlet, the piston structure moves a distance L from the origin position to the A position, and the aerosol enters the collection chamber;
[0015] Exhaust movement: the extractant of set concentration and set volume is injected into the collection tube, the first inlet is closed, the first outlet is opened, the piston structure moves from position A to the origin position, and the aerosol enters the collection tube from the collection chamber and contacts and mixes with the extractant;
[0016] Reflux movement, the first inlet remains closed and the first outlet remains open, the piston structure moves from the origin position to the B position by a distance K, and K ≥ L, and the piston structure then moves from the B position to the origin position, so that the extractant circulates in the loop formed by the capture pipe, the exhaust pipe, the smoke exhaust pipe and the collection chamber;
[0017] The suction movement, the discharge movement and the return flow movement are each performed at least once.
[0018] In certain embodiments of the present application, the capture method sets up a blank control group, and the capture tube in the blank control group is injected with an extractant of the same concentration and volume. The blank control group is subjected to the same suction movement, expulsion movement and reflux movement without inserting a cigarette, and the extractant is taken for testing the moisture content.
[0019] The embodiments of the present application have at least the following beneficial effects: when the aerosol capture device captures aerosol components, the suction component sucks the aerosol generated by the cigarette into the collection chamber, and then performs an external discharge movement to pass the aerosol into the capture tube. Through the action of the suction component and the peristaltic pump, the extractant has sufficient power to circulate in the loop and perform a reflux movement, so that the extractant fully absorbs the aerosol components. The present application can be widely used in the field of aerosol capture technology. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The aspects and advantages described and / or attached in the embodiments of the present application will become apparent and easy to understand in conjunction with the following drawings. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0021] Figure 1 Schematic diagram of the structure of the aerosol capture device.
[0022] Reference numerals:
[0023] 101. Collection chamber; 102. Piston structure;
[0024] 200. Smoke exhaust pipe;
[0025] 301, collecting pipe; 302, exhaust pipe; 303, first pipeline; 304, drying pipe;
[0026] 400, Peristaltic pump;
[0027] 501, first condensation zone; 502, second condensation zone; 503, second pipeline. DETAILED DESCRIPTION
[0028] Combine the following Figure 1 Embodiments of the present application are described in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0029] In the description of the present application, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.
[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0031] The present application relates to an aerosol capture device, which includes a suction component, a smoke exhaust pipe 200, a capture component and a peristaltic pump 400. The suction component extracts cigarettes and collects the aerosol formed. On the other hand, the suction component, the smoke exhaust pipe 200 and the capture component form a loop. Under the action of the suction component and the peristaltic pump 400, the aerosol is mixed with the extractant and circulates in the loop, promoting the extraction agent to absorb the aerosol.
[0032] In conjunction with the accompanying drawings, the suction assembly includes a collection chamber 101 and a piston structure 102. The piston structure 102 is movably arranged in the collection chamber 101. The collection chamber 101 is provided with a first inlet for aerosol to flow in and a first outlet for aerosol to flow out. The smoke exhaust pipe 200 is connected to the first outlet.
[0033] The capture assembly includes a capture pipe 301 and an exhaust pipe 302, the extractant is injected into the capture pipe 301, the capture pipe 301 is provided with a second inlet and a second outlet, the second inlet is connected to the exhaust pipe 200, the exhaust pipe 302 is provided with a third inlet and a third outlet and an exhaust port connected to a gas source or the atmosphere, the second outlet is connected to the third inlet, and the third outlet is connected to the exhaust pipe 200. It can be understood that the third inlet and the third outlet of the exhaust pipe 302 and the second inlet and the second outlet of the capture pipe 301 and the exhaust pipe 200, and the collection chamber 101 are connected by pipelines to form a loop for the circulation of the extractant.
[0034] Specifically, the third outlet is communicated with the smoke exhaust pipe 200 through the first pipeline 303, the peristaltic pump 400 is connected to the first pipeline 303, and the first pipeline 303 passes through the pump head of the peristaltic pump 400. Further, the first pipeline 303 is configured as a hose, and the pump head of the peristaltic pump 400 acts on the outer side wall of the first pipeline 303. The pump head of the peristaltic pump 400 forms a negative pressure in the first pipeline 303 by repeatedly squeezing and releasing the outer side wall of the first pipeline 303, thereby achieving pumping of the extractant and providing power for the flow of the extractant.
[0035] In some examples, the first pipeline 303 is made of silicone.
[0036] The aerosol capture device includes a condensation component, which forms a low-temperature environment to ensure a low volatility of the extractant during the entire experiment. Specifically, the condensation component includes a first condensation area 501 and a second condensation area 502, the capture pipe 301 is arranged in the first condensation area 501, and the exhaust pipe 302 is arranged in the second condensation area 502 to condense the aerosol components, increase the absorption efficiency of the extractant to the aerosol components, and reduce the volatilization of the extractant when it flows in the loop.
[0037] In conjunction with the accompanying drawings, the first condensation zone 501 and the second condensation zone 502 are connected through the second pipeline 503 and the third pipeline to form a closed loop. The first condensation zone 501 is provided with a fourth inlet and a fourth outlet, the second condensation zone 502 is provided with a fifth inlet and a fifth outlet, the second pipeline 503 connects the fourth inlet and the fifth outlet, and the third pipeline connects the fourth outlet and the fifth inlet.
[0038] The peristaltic pump 400 is connected to the second pipeline 503, and the second pipeline 503 passes through the pump head of the peristaltic pump 400. Further, the second pipeline 503 is configured as a hose, and the pump head of the peristaltic pump 400 acts on the outer side wall of the second pipeline 503. The pump head of the peristaltic pump 400 repeatedly squeezes and releases the outer side wall of the second pipeline 503, thereby forming a negative pressure in the second pipeline 503, achieving pumping of the coolant and providing power for the flow of the coolant.
[0039] In some examples, the second pipeline 503 is made of silicone.
[0040] As an embodiment, the peristaltic pump 400 is configured as a double-head peristaltic pump. On the one hand, the peristaltic pump 400 is used to provide power for the flow of the extractant, which can prevent the fluid in the circuit from directly contacting the pump head. On the other hand, the peristaltic pump 400 is configured as a double-head peristaltic pump 400, which can act on the first pipeline 303 and the second pipeline 503 respectively.
[0041] In the related art, in the process of the aerosol in the collection chamber 101 flowing to the collection tube 301 and the process of the extractant flowing in the loop, the flow of the aerosol and the extractant in the pipeline is realized only by the power of the aerosol airflow. The power is insufficient to drive the liquid to flow, and the feasibility of realizing the circulation of the extractant is low. Therefore, in this application, a peristaltic pump 400 is configured for the first pipeline 303 to drive the circulation of the liquid. On the other hand, it is difficult to achieve a gas-liquid separation state in the loop by using the flow mode of gas to drive the liquid. Therefore, the hose of the first pipeline 303 and the peristaltic pump 400 are used to realize the circulation, so that the liquid squeezed into the exhaust pipe 302 due to the entry of external gas can flow back into the loop, so that the aerosol can always be in contact with the extractant, increase the contact time, and improve the absorption efficiency.
[0042] As an embodiment, the suction assembly includes a three-way valve, one end of the three-way valve is connected to the collection chamber 101, and the other two ends of the three-way valve are respectively set as a first inlet and a first outlet, and the opening or closing of the first inlet and the first outlet is respectively controlled by the three-way valve.
[0043] Further, the suction assembly includes a holder, the holder is used to hold the cigarette, and the first inlet is connected to the holder. Specifically, the holder is connected to one port of the three-way valve. It can be understood that the collection chamber 101 and the smoke exhaust pipe 200 are respectively connected to the other two ports of the three-way valve.
[0044] As an embodiment, the aerosol capture device includes a drive assembly, which is connected to the piston structure 102 and can drive the piston structure 102 to reciprocate in the collection chamber 101, realize automatic suction, and complete suction movement, external discharge movement and reflux movement. Specifically, the drive assembly drives the piston structure 102 to move in the collection chamber 101 in the form of a screw pair.
[0045] It can be understood that during the aerosol capture process, when the suction component and the peristaltic pump 400 work to achieve the circulation flow of the extractant, the gas insoluble in the extractant in the aerosol can be discharged through the exhaust port of the exhaust pipe 302, and the external gas can enter from the exhaust port to achieve air pressure balance in the circuit.
[0046] Furthermore, the exhaust port is connected to a drying pipe 304 to dry the gas entering the exhaust pipe 302 from the atmosphere or the gas source to ensure the purity of the extractant.
[0047] As an embodiment, the collecting tube 301 is configured as a spiral tube. Specifically, the collecting tube 301 is made of glass and formed into a glass serpentine condenser tube. On the one hand, the collecting tube 301 is miniaturized, and on the other hand, the collecting tube 301 is extended to promote the absorption and condensation of the extractant.
[0048] The content of the present application is described in detail below with a specific embodiment. It should be noted that the following description is only an exemplary description and not a specific limitation to the present application.
[0049] The present application relates to a capture method, which is implemented by using an aerosol capture device.
[0050] The workflow of the capture method includes suction movement, discharge movement and reflux movement.
[0051] The inhalation movement draws the aerosol formed by the cigarette into the collection chamber 101. Specifically, the first inlet is opened, the first outlet is closed, and within a set time, the piston structure 102 moves a distance L from the origin position to the A position, forming a negative pressure environment in the collection chamber 101, so that the aerosol enters the collection chamber 101, completing the inhalation process of the set volume, and the aerosol is temporarily stored in the collection chamber 101.
[0052] The outward movement discharges the aerosol in the collection chamber 101 to the collection tube 301. Specifically, the first inlet is closed, the first outlet is opened, and within a set time, the piston structure 102 moves from position A to the origin position, and the aerosol enters the collection tube 301 from the collection chamber 101 and contacts and mixes with the extractant in the collection tube 301, so that the extractant absorbs the aerosol.
[0053] Further, the suction movement and the discharge movement are performed at least once respectively. Specifically, after completing one suction movement, an discharge movement can be performed to pass the sucked aerosol into the capture tube 301, and the suction and aerosol collection are completed by a set number of cycles.
[0054] The reflux movement circulates the extractant mixed with the aerosol in the loop. Specifically, after completing the set number of suction movements and discharge movements, the first inlet remains closed and the first outlet remains open. Within the set time, the piston structure 102 moves a distance K from the origin position to the B position, and K ≥ L. The piston structure 102 then moves from the B position to the origin position, so that the extractant circulates in the loop formed by the capture pipe 301, the exhaust pipe 302, the smoke exhaust pipe 200 and the collection chamber 101. During the circulation process, the extractant elutes and absorbs the aerosol components attached to and deposited on the inner wall of the pipe and chamber through which it flows, and can fully absorb the aerosol during the circulation process.
[0055] Further, the reflux movement is performed at least once so that the extractant can fully absorb the aerosol. After completing the set number of reflux movements, the extractant is taken out for on-machine testing.
[0056] It should be noted that the origin position refers to the initial position of the piston structure 102 in the collection chamber 101. When the piston structure 102 is at the origin position, there is space in the collection chamber 101 or the volume of the collection chamber 101 is zero. On the other hand, when the piston structure 102 moves to position A or position B, it moves in the same direction.
[0057] Before the capture method is implemented, the extraction agent is injected and the capacity is calibrated. Specifically, before the puffing movement, the extraction agent of set concentration and volume is added to the capture tube 301, and the aerosol capture device is started to preheat for a set number of times. Preheating means that the puffing movement and the discharge movement are repeated for a number of times without inserting the cigarette sample. After the preheating is completed, the capacity is calibrated. Specifically, the puffing capacity is calibrated using a soap film flowmeter.
[0058] In order to improve the accuracy of aerosol component determination, a blank control group is set in the capture method. The aerosol capture device in the blank control group has the same structure as the aerosol capture device for actually capturing aerosol components, and the capture tube 301 in the blank control group is injected with the same concentration and volume of extractant.
[0059] Without inserting a cigarette, the blank control group performed the same suction movement, efflux movement and reflux movement, and the number of operations was the same. After completing the operation, the extractant was taken to test the water content.
[0060] In the description of this specification, if the reference terms "one embodiment", "some examples", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0061] The above describes the implementation methods of the present application in detail in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.
[0062] In the description of this application, if "," appears in the patent name, it means an "and" relationship, not an "or" relationship. For example, if the patent name is "a kind of A, B", it means that the content required to be protected by this application is: the technical solution with the subject name A and the technical solution with the subject name B.
Claims
1. An aerosol capture device, characterized in that: include A suction assembly, the suction assembly comprising a collection chamber and a piston structure, the piston structure being movably disposed in the collection chamber, the collection chamber being provided with a first inlet for aerosol to flow in and a first outlet for aerosol to flow out; a smoke exhaust pipe, the smoke exhaust pipe being connected to the first outlet; A capture assembly, the capture assembly comprising a capture pipe and an exhaust pipe, the capture pipe being provided with a second inlet and a second outlet, the second inlet being communicated with the exhaust pipe, the exhaust pipe being provided with a third inlet and a third outlet and an exhaust port communicating with an air source or the atmosphere, the second outlet being communicated with the third inlet, and the third outlet being communicated with the exhaust pipe through a first pipeline; A peristaltic pump is connected to the first pipeline, the first pipeline is configured as a hose, and the peristaltic pump acts on the outside of the first pipeline.
2. The aerosol capture device according to claim 1, characterized in that: The aerosol capture device comprises a condensation assembly, wherein the condensation assembly comprises a first condensation zone and a second condensation zone, the capture pipe is arranged in the first condensation zone, and the exhaust pipe is arranged in the second condensation zone.
3. The aerosol capture device according to claim 2, characterized in that: The first condensation area and the second condensation area are connected to each other through the second pipeline and the third pipeline to form a closed loop. The second pipeline is configured as a hose. The peristaltic pump is connected to the second pipeline and acts on the outside of the second pipeline.
4. The aerosol capture device according to claim 3, characterized in that: The peristaltic pump is configured as a double-head peristaltic pump.
5. The aerosol capture device according to claim 1, characterized in that: The suction assembly includes a three-way valve, one end of which is connected to the collection chamber, and the other two ends of the three-way valve are respectively arranged as the first inlet and the first outlet.
6. The aerosol capture device according to claim 1 or 5, characterized in that: The suction assembly comprises a holder, which is used to hold the cigarette, and the first inlet is connected to the holder.
7. The aerosol capture device according to claim 1, characterized in that: The aerosol capture device comprises a driving assembly, which is connected to the piston structure and can drive the piston structure to reciprocate in the collection chamber.
8. The aerosol capture device according to claim 1, characterized in that: The collecting tube is configured as a spiral tube.
9. A capture method, characterized in that: The capture method is implemented by using the aerosol capture device according to any one of claims 1 to 8, and the process of the capture method includes: Add an extractant of set concentration and volume into the collection tube, start the aerosol collection device to preheat for a set number of times, and perform capacity calibration after the preheating is completed; Suction movement, opening the first inlet, closing the first outlet, the piston structure moves a distance L from the origin position to the A position, and the aerosol enters the collection chamber; Exhaust movement: the extractant of set concentration and set volume is injected into the collection tube, the first inlet is closed, the first outlet is opened, the piston structure moves from position A to the origin position, and the aerosol enters the collection tube from the collection chamber and contacts and mixes with the extractant; Reflux movement, the first inlet remains closed and the first outlet remains open, the piston structure moves from the origin position to the B position by a distance K, and K ≥ L, and the piston structure then moves from the B position to the origin position, so that the extractant circulates in the loop formed by the capture pipe, the exhaust pipe, the smoke exhaust pipe and the collection chamber; The suction movement, the discharge movement and the return flow movement are each performed at least once.
10. The capture method according to claim 9, characterized in that: The capture method sets a blank control group, in which the capture tube is injected with an extractant of the same concentration and volume, and the blank control group is subjected to the same suction movement, efflux movement and reflux movement without inserting a cigarette, and the extractant is taken for water content detection.