A smoke concentration detection device and a detection method

Abstract

This application discloses a smoke concentration detection device and method, relating to the technical field of tobacco detection equipment. The detection device includes a suction device and a photoelectric detection device. The suction device includes a cigarette holder, a gas driving device, and a transparent container. Both ends of the transparent container are connected to the cigarette holder and the gas driving device, respectively. The gas driving device pumps smoke into the transparent container. The photoelectric detection device includes a light source emitter and a photoelectric receiver. The light source emitter and photoelectric receiver are positioned opposite each other on both sides of the transparent container so that the light emitted by the light source emitter can pass through the transparent container and be received by the photoelectric receiver, thus detecting the smoke concentration inside the transparent container. In this application, the suction device simulates the process of a real person smoking, making the detection results more practical and solving the problem that the smoke from heated non-combustible cigarettes is relatively weak and difficult to detect.

Description

Technical Field

[0001] This application relates to the field of tobacco detection equipment technology, and in particular to a smoke concentration detection device and detection method. Background Technology

[0002] New tobacco products mainly include smokeless tobacco products, heated tobacco products, and e-cigarettes, among which heated tobacco products have received high attention from major tobacco companies. The main components of heated tobacco smoke are glycerin, propylene glycol, nicotine, and water, with water aerosol content accounting for 70-80%, and the smoke is white.

[0003] Smoke volume concentration is one of the important indicators for evaluating the sensory quality of heated tobacco products. Traditional methods for detecting cigarette smoke volume mainly include microscopic observation, inertial impaction, and electrostatic migration. Currently, sensory evaluation is commonly used to assess the amount of smoke from heated tobacco products. However, because the smoke from heated tobacco products is relatively light, it is difficult to detect, resulting in low accuracy of the test results. Summary of the Invention

[0004] In view of this, the purpose of this application is to overcome the shortcomings of the prior art. This application provides a smoke concentration detection device and detection method to solve the technical problem that the smoke from heated non-combustible tobacco is relatively light, making it difficult to detect.

[0005] Firstly, this application provides:

[0006] A smoke concentration detection device, comprising:

[0007] A suction device includes a cigarette holder, a gas driving device, and a transparent container. The two ends of the transparent container are respectively connected to the cigarette holder and the gas driving device, and the gas driving device pumps smoke into the transparent container.

[0008] A photoelectric detection device includes a light source emitter and a photoelectric receiver. The light source emitter and the photoelectric receiver are disposed opposite each other on both sides of the transparent container so that the light emitted by the light source emitter can pass through the transparent container and be received by the photoelectric receiver.

[0009] In some embodiments of this application, the cigarette holder is disposed below the transparent container, and the gas driving device is disposed above the transparent container.

[0010] In some embodiments of this application, the suction device includes a piston disposed on the upper end face of the transparent container and movably connected to the inside of the transparent container.

[0011] In some embodiments of this application, the outer wall of the piston is in sealed contact with the side wall of the transparent container.

[0012] In some embodiments of this application, the smoke concentration detection device further includes a first airflow channel, one end of which is connected to the gas delivery end of the gas driving device, and the opening at the other end is located in the middle of the piston.

[0013] In some embodiments of this application, the first airflow channel is a hollow metal tube;

[0014] The suction device also includes a positive and negative pressure converter and a flow controller. The positive and negative pressure converter is connected to the gas delivery end of the gas driving device and one end of the flow controller, and the other end of the flow controller is connected to the hollow metal tube.

[0015] In some embodiments of this application, the suction device further includes a timing controller, which is electrically connected to the flow controller. The timing controller is used to control the flow controller to open the gas driving device and the first airflow channel according to a first preset time or a second preset time.

[0016] In some embodiments of this application, the first preset time ranges from 1s to 3s, and the second preset time ranges from 25s to 35s.

[0017] In some embodiments of this application, the flow rate controlled by the flow controller is 17.5 ml / s or 27.5 ml / s.

[0018] In some embodiments of this application, the smoke concentration detection device further includes a second airflow channel, which is connected to the cigarette holder and the transparent container, respectively, and the transparent container is a cylindrical container.

[0019] In some embodiments of this application, the lower end of the transparent container is provided with an opening, which communicates with the outlet of the second airflow channel.

[0020] In some embodiments of this application, the opening is the entire lower end face of the transparent container.

[0021] In some embodiments of this application, the cigarette holder includes a cigarette clamp and a baffle platform. The cigarette clamp is disposed at the bottom of the baffle platform, and a groove is provided on the baffle platform. The lower end of the transparent container can be inserted into the groove so that the outer wall of the transparent container is sealed against the groove wall. The outlet of the cigarette clamp is connected to the inlet of the second airflow channel, and the outlet of the second airflow channel is located in the groove.

[0022] In some embodiments of this application, the transparent container is provided with an air vent, which is located near the lower end of the transparent container. When the lower end of the transparent container is inserted into the groove, the groove wall can seal the air vent.

[0023] In some embodiments of this application, a spiral guide structure or guide vane is provided in the first airflow channel.

[0024] In some embodiments of this application, the smoke concentration detection device further includes:

[0025] The control device is electrically connected to the photoelectric detection device;

[0026] A data processing device, which is electrically connected to the control device.

[0027] In some embodiments of this application, the gas driving device is an air pump or an air compressor.

[0028] In some embodiments of this application, the wavelength of the emitted light from the light source emitter is not less than 560 nm, and the direction of the emitted light is perpendicular to the transparent container.

[0029] Secondly, this application also provides a method for detecting smoke concentration, including:

[0030] Place the bottom opening of the transparent container into the groove of the cigarette holder, so that the transparent container is in seamless contact with the side wall of the groove;

[0031] Adjust the position of the piston of the suction device in the transparent container so that the smoke capacity of the transparent container reaches the preset capacity value;

[0032] Place the cigarette on the cigarette holder and insert the smoking end of the cigarette into the second airflow channel of the cigarette holder;

[0033] The concentration of flue gas inside a transparent container is detected, and the concentration data is recorded using a data processing device.

[0034] In some embodiments of this application, during the flue gas concentration detection process, the flow rate of the suction device is 27.5 ml / s, and the opening time cycle of the suction device is 2s, and the closing time cycle is 30s.

[0035] During the 15 to 25 seconds when the suction device is in the off state, the transparent container is controlled to move upward so that the smoke in the transparent container is completely discharged from the bottom opening of the transparent container.

[0036] The transparent container is moved downwards to return to its initial groove position, and the next puff of smoke is measured until the cigarette is completely smoked. The data processing device automatically records the concentration data throughout the entire measurement process.

[0037] The beneficial effects of this application are as follows: This application proposes a smoke concentration detection device. The bottom opening of a transparent container is placed on a cigarette holder. A gas-driven device draws smoke into the transparent container, increasing its smoke volume to a preset value, allowing for quantitative detection. This volume can be the amount of smoke a person inhales. The suction device simulates this, allowing smoke to enter the transparent container. A photoelectric detection device is then activated to detect the smoke concentration within the transparent container, primarily through optical measurement methods. This process, simulating a human smoking process, makes the detection results more practically meaningful. Furthermore, this detection device is applicable not only to traditional cigarettes but also to new tobacco products, especially heated tobacco products, solving the problem of the relatively weak smoke volume of heated tobacco products, which is difficult to detect. Additionally, the online quantitative measurement method, achieved through the cooperation of the piston and the transparent container, is more scientific and reasonable than manual evaluation. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 The following are schematic diagrams of the structure of the smoke concentration detection device in some embodiments of this application;

[0040] Figure 2 This illustration shows a schematic diagram of the transparent container of the smoke concentration detection device inserted into the groove in some embodiments of this application;

[0041] Figure 3 This illustration shows a schematic diagram of the transparent container of the smoke concentration detection device in some embodiments of this application, with the container away from the groove.

[0042] Figure 4 This application shows a schematic diagram of the structure of a cigarette placement device in a smoke concentration detection device according to some embodiments;

[0043] Figure 5 A partial structural schematic diagram of the first airflow channel in some embodiments of this application is shown;

[0044] Figure 6 The schematic diagram of the smoke concentration detection device in some embodiments of this application is shown;

[0045] Figure 7A flowchart of a cigarette smoke concentration detection method in some embodiments of this application is shown.

[0046] Explanation of key component symbols:

[0047] 100-Cigarette holder; 101-Baffle platform; 1011-Second airflow channel; 1012-Groove; 1013-Spiral flow guide structure; 102-Cigarette clamp; 200-Transparent container; 300-Suction device; 301-Piston; 302-Gas driving device; 303-Positive and negative pressure converter; 304-Flow controller; 305-Timer controller; 306-Hollow metal tube; 400-Container driving device; 500-Photoelectric detection device; 501-Light source emitter; 502-Photoelectric receiver; 600-Control device; 700-Data processing device. Detailed Implementation

[0048] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0049] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] In the process of detecting the smoke concentration of cigarettes, the smoke concentration of heated tobacco products is mainly assessed through manual inhalation, with very few online measurement methods. Smoke concentration detection technology is primarily focused on the development of e-cigarettes. Currently, optical methods are commonly used to measure smoke concentration, mainly employing light scattering, light transmission, and infrared spectroscopy theories. Commercially available e-cigarette smoke concentration detection devices, based on the relationship between light transmittance and smoke concentration, simulate smoking behavior through cylinder piston inhalation, establishing a method for characterizing e-cigarette smoke concentration. However, the smoke concentration values ​​of heated tobacco products are relatively low compared to e-cigarettes, making e-cigarette concentration detection devices unsuitable for heated tobacco products. Furthermore, the assessment of the amount of smoke from heated tobacco products typically relies on sensory evaluation; however, because the smoke from heated tobacco products is relatively weak, it is difficult to detect, resulting in low accuracy.

[0054] Example 1

[0055] like Figure 1 , Figure 2 and Figure 3 As shown, to address the aforementioned problems, embodiments of this application provide a smoke concentration detection device, primarily applicable to the detection of smoke concentration in both traditional and novel tobacco products, particularly heated tobacco products. This smoke concentration detection device includes a cigarette-drawing device 300 and a photoelectric detection device 500.

[0056] The suction device 300 includes a cigarette holder 100, a gas driving device 302, and a transparent container 200. The two ends of the transparent container 200 are respectively connected to the cigarette holder 100 and the gas driving device 302. The gas driving device 302 pumps the smoke into the transparent container 200.

[0057] Combination Figure 6 As shown, the photoelectric detection device 500 includes a light source emitter 501 and a photoelectric receiver 502. The light source emitter 501 and the photoelectric receiver 502 are positioned opposite each other on both sides of the transparent container 200, so that the light emitted by the light source emitter 501 can pass through the transparent container 200 and be received by the photoelectric receiver 502. It is understood that the positions of the light source emitter 501 and the photoelectric receiver 502 on opposite sides of the transparent container 200 can be adjusted according to detection needs. Optionally, the smoke concentration detection device also includes a control device 600 and a data processing device 700. The control device 600 is electrically connected to the photoelectric detection device 500, and the data processing device 700 is electrically connected to the control device 600. The electrical connection can be a cable connection, an Ethernet connection, or a wireless connection, etc. The control device 600 converts and processes the light signal from the photoelectric receiver 502, and then sends the smoke concentration data to the data processing device 700 for display and recording. It should be noted that the data processing device 700 can be data analysis software on a PC, such as data analysis software on a computer. The data analysis software can be programmed and configured. The data processing device 700 processes and displays the data transmitted from the control device 600, and sets parameters for the behavior of the control device 600. The data processing, display, and parameter setting of the control device 600 are achieved through computer data analysis software that converts the data into a function graph and records the data in real time.

[0058] Additionally, it should be noted that the detection principle of the photoelectric detection device 500 is based on the Lambert-Beer law: when light propagates in a medium, its energy continuously attenuates in the direction of propagation, and the energy loss in the direction of propagation is proportional to the distance the light travels. The transmittance of the sample flue gas is measured by light transmission, and the magnitude of the transmittance reflects the magnitude of the smoke concentration (smoke concentration). Specifically, when the laser emitted by the light source emitter 501 propagates in the aerosol medium, the beam is scattered, refracted, and absorbed by the aerosol particles, causing the light intensity to continuously attenuate in the direction of propagation. A high aerosol concentration results in low transmitted light intensity; a low aerosol concentration results in high transmitted light intensity. Transmittance refers to the percentage of transmitted light intensity to incident light intensity. According to the Lambert-Beer law, the relationship between smoke concentration and light intensity is: I = I0 * exp(-KCL). Where I0 is the incident light intensity, I is the transmitted light intensity, K is the extinction coefficient, L is the absorption layer thickness, and C is the smoke concentration.

[0059] like Figure 1 As shown, in some embodiments, optionally, the cigarette holder 100 is positioned below the transparent container 200, and the gas driving device 302 is positioned above the transparent container 200. This allows the smoke generated by the cigarette at the cigarette holder 100 to flow from bottom to top into the transparent container 200, balancing the gravity and diffusion force on the smoke, resulting in a more stable and uniform smoke flow and improved testing accuracy.

[0060] like Figure 2 and Figure 3 As shown, in some embodiments, optionally, the suction device 300 includes a piston 301, which is disposed on the upper end face of the transparent container 200 and movably connected to the transparent container 200. Further, the outer wall of the piston 301 is in sealing contact with the side wall of the transparent container 200. In this embodiment, the bottom of the piston 301 and the transparent container 200 form a space for containing smoke. The piston 301 can move relative to the transparent container 200 to adjust the amount of smoke in the transparent container 200, enabling quantitative measurement.

[0061] Optionally, the smoke concentration detection device further includes a first airflow channel, one end of which is connected to the gas delivery end of the gas driving device 302, and the opening at the other end is located in the middle of the piston 301. The gas driving device 302 can be an air pump or an air compressor, and the air pump can be a flow-controlled pump. The first airflow channel is formed by the hollow portion of a hollow metal tube 306. When drawing gas from the transparent container 200, the gas driving device 302 draws gas from the transparent container 200, and the gas in the transparent container 200 flows out through the opening in the middle of the piston 301 and the first airflow channel, thereby allowing the smoke generated by the cigarette to enter the transparent container 200.

[0062] like Figure 1As shown in the above embodiment, the suction device 300 further includes a positive-negative pressure converter 303 and a flow controller 304. The positive-negative pressure converter 303 is connected to the gas delivery end of the gas driving device 302 and one end of the flow controller 304, while the other end of the flow controller 304 is connected to the hollow metal tube 306. Its function is to convert the positive pressure provided by the gas driving device 302 into a negative pressure, resulting in a negative pressure at the connection point between the positive-negative pressure converter 303 and the flow controller 304. After the gas driving device 302 is turned on, its gas delivery end extracts air from the transparent container 200 through the flow controller 304 and the hollow metal tube 306, simulating a person smoking. The flow controller 304 can be a flow control pump. Optionally, the flow rate controlled by the flow controller 304 is 17.5 ml / s or 27.5 ml / s.

[0063] like Figure 1 As shown, in the embodiment of the suction device 300 of this application, the suction device 300 further includes a timing controller 305, which is electrically connected to the flow controller 304. The timing controller 305 is used to control the flow controller 304 to open or close the first airflow channel formed by the gas drive device 302, the positive and negative pressure converter 303 and the hollow metal tube 306 according to a first preset time or a second preset time.

[0064] Optionally, the first preset time ranges from 1 second to 3 seconds, and the second preset time ranges from 25 seconds to 35 seconds. Preferably, the first preset time is 2 seconds, and the second preset time is 30 seconds.

[0065] In this embodiment, the opening or closing of the first airflow channel can be controlled at regular intervals by setting the timer controller 305. When it is open, the airflow flows through the first airflow channel to achieve a suction state.

[0066] like Figure 4 As shown, in any of the above embodiments, optionally, the smoke concentration detection device further includes a second airflow channel 1011, which is connected to both the cigarette holder 100 and the transparent container 200, and the transparent container 200 is a cylindrical container. Specifically, the lower end face of the transparent container 200 has an opening, which is connected to the outlet of the second airflow channel 1011.

[0067] Optionally, the opening is the entire lower surface of the transparent container. Of course, the opening can also be a portion of the entire lower surface of the transparent container.

[0068] In the above embodiments of this application, optionally, the cigarette holder 100 includes a cigarette clamp 102 and a baffle platform 101. The cigarette clamp 102 is disposed at the bottom of the baffle platform 101, and the outlet of the cigarette clamp 102 communicates with the inlet of the second airflow channel 1011. The outlet of the second airflow channel 1011 is located within the groove 1012. Specifically, the groove 1012 is formed on the top of the baffle platform 101, and the second airflow channel 1011 is formed on the baffle platform 101. The cigarette clamp 102 is disposed at the bottom of the baffle platform 101, and the outlet of the cigarette clamp 102 communicates with the inlet of the second airflow channel 1011. The outlet of the second airflow channel 1011 is located within the groove 1012. By clamping the cigarette with the cigarette clamp 102, the smoking end of the cigarette is located at the inlet of the second airflow channel 1011, facilitating the entry of smoke into the second airflow channel 1011 during inhalation.

[0069] Specifically, the groove 1012 is connected to the second airflow channel 1011. Because the groove 1012 is connected to the second airflow channel 1011, the cigarette can be held in the cigarette holder 100, with the smoking end of the cigarette connected to the inlet of the second airflow channel 1011. The smoke generated by the cigarette can then pass through the groove 1012 along the second airflow channel 1011 and enter the transparent container 200. When the transparent container 200 is inserted into the groove 1012, the transparent container 200 and the groove 1012 are in a sealed connection.

[0070] Alternatively, a rubber material layer can be provided on the sidewall of the groove 1012, and an air vent can be provided on the transparent container 200. The air vent is located near the lower end of the transparent container 200, and when the lower end of the transparent container 200 is inserted into the groove 1012, the groove wall of the groove 1012 can seal the air vent. In this embodiment, multiple air vents can be provided, mainly arranged along the circumference of the transparent container 200. This way, when discharging smoke from the transparent container 200, both the air vent and the opening can discharge smoke, or the air vent can be used alone to discharge smoke. At the same time, when the transparent container 200 is inserted into the groove 1012, the air vent can be sealed by the sidewall of the groove 1012. In addition, the rubber material layer further increases the sealing between the transparent container 200 and the sidewall of the groove 1012, ensuring that smoke flows into the transparent container 200.

[0071] Optionally, the smoke concentration detection device further includes a container driving device 400. The container driving device 400 is connected to the transparent container 200 and is used to drive the transparent container 200 away from or into the groove 1012. When the transparent container 200 is inserted into the groove 1012, the groove 1012, the transparent container 200, and the piston 301 form a smoke-containing space. At this time, after the suction device 300 starts suctioning, the smoke generated by the cigarette can flow into the groove 1012 along the second airflow channel 1011 and enter the transparent container 200. When the container driving device 400 drives the transparent container 200 away from the groove 1012, the piston 301 remains stationary, and the transparent container 200 moves upward relative to the piston 301, allowing the smoke inside the transparent container 200 to be discharged from the bottom opening.

[0072] Additionally, it should be noted that during the testing process, the transparent container 200 can be moved upwards by the container driving device 400, allowing the smoke in the transparent container 200 to be completely discharged from the bottom opening of the transparent container 200. The transparent container 200 is then moved downwards to return to the initial position of the groove 1012, and the next smoke measurement is performed until the cigarette is completely smoked. The concentration is recorded in real time, ensuring high repeatability of the test.

[0073] In the above embodiments, optionally, the container driving device 400 can automatically extend a rod, such as an electric push rod. The top end of the electric push rod, i.e., the output end, is connected to the transparent container 200 via a connector, thereby pushing the transparent container 200 to move up and down. The electric push rod and the connector are positioned on opposite sides of the light source emitter 501 and the photodetector 502 to avoid obstructing light transmission.

[0074] like Figure 1 As shown, in some embodiments of this application, optionally, the transparent container 200 is arranged vertically, and the inlet of the second airflow channel 1011 is located at the bottom of the cigarette holder 100. This allows the smoke entering from the second airflow channel 1011 to flow upwards into the transparent container 200, balancing the gravity and diffusion force on the smoke, resulting in a more stable and uniform smoke flow and improved testing accuracy.

[0075] Optionally, the transparent container 200 can be a glass tube made of highly transparent quartz glass, in a tubular shape. The inner diameter of the glass tube is designed to be between 30 and 40 mm, the wall thickness between 0.5 and 2.5 mm, and the volume of the glass tube between 80 and 120 ml. During measurement, the piston 301 is moved to adjust the volume of the glass tube to 55 ml. Of course, it can also be adjusted to 35 ml, 45 ml, and 60 ml, etc., to achieve quantitative measurement within the glass tube, that is, to achieve quantitative measurement of the transparent container 200.

[0076] In some embodiments of this application, optionally, the wavelength of the emitted light from the light source emitter 501 is not less than 560nm, and the direction of the emitted light is perpendicular to the transparent container 200.

[0077] In this embodiment, the wavelength of the emitted light is not less than 560 nm, and a wavelength of 560 nm or higher (including 560 nm) is used. The longer the wavelength, the better the absorption of light by the smoke. Optionally, the emitted light is designed with a 1-4 mm wide flat aperture, and the beam enters the transparent container 200 perpendicularly to the surface of the transparent container 200, forming a rectangular plane beam. The rectangular plane beam serves as a detection surface, ensuring that all smoke passing through this plane is detected and recorded, thereby dynamically simulating the smoke concentration changes of each puff of smoke. This solves the errors caused by smoke metering and the influence of smoke uniformity on the results.

[0078] like Figure 5 As shown, in some embodiments of this application, optionally, a spiral guide structure 1013 or a guide vane is provided in the second airflow channel 1011. In this embodiment, the spiral guide structure 1013 is provided in the second airflow channel 1011, which can make the flue gas mix evenly before entering the transparent container 200, thereby making the flue gas entering the transparent container 200 more uniform and improving the measurement accuracy. Alternatively, guide vanes can also be provided in the second airflow channel 1011 to mix the flue gas in the second airflow channel 1011, such as multiple guide vanes being staggered in the second airflow channel 1011.

[0079] Optionally, a rotatable fixing plate is provided at the outlet end of the second airflow channel 1011, so that the flue gas can only enter the groove 1012 from the second airflow channel 1011 and cannot flow backward. The fixing plate acts as a one-way valve, which facilitates the control of the flow direction of the flue gas.

[0080] Example 2

[0081] like Figure 7 As shown, another embodiment of this application also provides a method for detecting smoke concentration, including the following steps:

[0082] S1, the bottom opening of the transparent container 200 is placed in the groove 1012 of the cigarette holder 100, so that the transparent container 200 is in seamless contact with the side wall of the groove 1012.

[0083] Specifically, the transparent container 200 can be driven downward into the groove 1012 by the container driving device 400. In the design, the sealing between the transparent container 200 and the groove 1012 is ensured when the transparent container 200 moves into the groove 1012.

[0084] S2, adjust the position of the piston 301 of the suction device 300 in the transparent container 200 so that the smoke capacity of the transparent container 200 reaches the preset capacity value.

[0085] Specifically, the position of piston 301 can be moved to a position where the transparent container 200 can hold a volume of 55ml, which means that a preset capacity value of 55ml can be set.

[0086] S3, place the cigarette on the cigarette holder 100 and insert the smoking end of the cigarette into the second airflow channel 1011 of the cigarette holder 100. The cigarette is clamped on the cigarette holder 102 so that the smoking end of the cigarette is located at the entrance of the second airflow channel 1011.

[0087] S4, the photoelectric detection device 500, control device 600, and data processing device 700 are activated to detect the smoke concentration in the transparent container 200, and the concentration data is recorded by the data processing device 700. In step S3, after the cigarette is clamped, the suction device 300 is used to draw in the amount of smoke simulating a human inhaling a puff. At this time, the photoelectric detection device 500, control device 600, and data processing device 700 are activated to detect the smoke concentration.

[0088] In some embodiments of this application, optionally, during the flue gas concentration detection process, the flow rate of the suction device 300 is 27.5 ml / s, and the opening time period of the suction device 300 is 2 seconds, and the closing time period is 30 seconds. When the suction device 300 is suctioning, the flow rate of the suction device 300 is controlled to remain at 27.5 ml / s by the flow stabilizer 304. Simultaneously, the opening time period of the suction device 300 is controlled to be 2 seconds, and the closing time period is 30 seconds by the timing controller 305.

[0089] During the 15s to 25s when the suction device 300 is in the closed state, the transparent container 200 is moved upwards, allowing the flue gas in the transparent container 200 to be completely discharged from the bottom opening of the transparent container 200. During this process, the transparent container 200 slides relative to the piston 301, causing the dirt to be carried out, thereby cleaning the condensate and other dirt adhering to the inner wall of the transparent container 200.

[0090] The transparent container 200 is moved downwards to return to the initial position of the groove 1012, and the next puff of smoke is measured until the cigarette is completely smoked. The data processing device 700 automatically records the concentration data throughout the measurement process. After repeated measurements of each puff of smoke, multiple sets of smoke concentration data are obtained.

[0091] In summary, the smoke concentration detection device and method provided in the embodiments of this application involve placing the bottom opening of a transparent container 200 into the groove 1012 of a cigarette holder 100, ensuring seamless contact between the transparent container 200 and the side wall of the groove 1012. The piston 301 of the suction device 300 is adjusted in the transparent container 200 to achieve a preset smoke volume, allowing for quantitative detection—essentially the amount of smoke a person inhales. A cigarette is then placed on the cigarette holder 100, with the cigarette's smoking end inserted into the second airflow channel 1011 of the cigarette holder 100. The suction device 300 simulates the amount of smoke a person inhales, allowing smoke to enter the transparent container 200. The photoelectric detection device 500, control device 600, and data processing device 700 are activated to detect the smoke concentration within the transparent container 200. The smoke concentration within the transparent container 200 is primarily measured using optical methods, and the concentration data is recorded by the data processing device 700. In this process, by simulating the smoking process of a real person, the test results are more practically meaningful. Furthermore, this testing equipment is not only applicable to traditional cigarettes but also to new types of tobacco, especially heated tobacco products, solving the problem that heated tobacco products have relatively weak smoke and are difficult to detect. In addition, relying on the cooperation of piston 301 and transparent container 200, an online quantitative measurement method is achieved, which is more scientific and reasonable than manual analysis.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0093] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A device for detecting the concentration of aerosol of heated, non-combustible tobacco, characterized by, The application relates to a smoke concentration detection device. The smoke concentration detection device comprises a suction device, a photoelectric detection device, a first airflow channel, a second airflow channel and a container driving device. The suction device comprises a cigarette placing device, a piston, a gas driving device and a transparent container. The photoelectric detection device comprises a light source emitter and a photoelectric receiver. The first airflow channel is connected with the gas driving device and the transparent container. The cigarette placing device comprises a cigarette clamp and a baffle table.

2. The aerosol concentration detecting apparatus for heat-not-burn tobacco according to claim 1, characterized by, The baffle table is provided with a groove at the top.

3. The aerosol concentration detecting apparatus of the heated, not combusted tobacco according to claim 1, characterized by, The lower end of the transparent container can be inserted into the groove.

4. The smoke concentration detecting apparatus for heat-not-burn tobacco according to claim 1, characterized by, The container driving device is connected with the transparent container.

5. The smoke concentration detecting apparatus of the heat-not-burn tobacco according to claim 4, characterized by, The piston is fixed when the transparent container is driven away from the groove. The transparent container moves upward relative to the piston.

6. The smoke concentration detecting apparatus for heat-not-burn tobacco according to claim 5, characterized by, The smoke in the transparent container can be discharged from the bottom opening. The cigarette placing device is arranged below the transparent container. The gas driving device is arranged above the transparent container. The outer wall of the piston is in sealing contact with the side wall of the transparent container. The first airflow channel is a hollow metal pipe. The suction device further comprises a positive-negative pressure converter and a flow stabilizer. The positive-negative pressure converter is connected with the gas driving device and the flow stabilizer. The flow stabilizer is connected with the hollow metal pipe. The suction device further comprises a timing controller. The timing controller is electrically connected with the flow stabilizer. The timing controller is used for controlling the flow stabilizer to open or close the gas driving device and the first airflow channel according to a first preset time or a second preset time.

7. The aerosol mass concentration detection device for heat-not-burn tobacco of claim 6, wherein The first preset time ranges from 1s to 3s, and the second preset time ranges from 25s to 35s.

8. The smoke concentration detecting apparatus for heat-not-burn tobacco according to claim 6, characterized by, The flow rate controlled by the steady flow controller is 17.5ml / s or 27.5ml / s.

9. The smoke concentration detecting device for heat-not-burn tobacco according to any one of claims 1 to 8, characterized by, The transparent container is a cylindrical container.

10. The smoke concentration detecting apparatus of the heat-not-burn tobacco according to claim 9, characterized by, The second gas flow channel is provided with a spiral flow guide structure or a flow guide vane.

11. The smoke concentration detecting apparatus of the heat-not-burn tobacco according to claim 1, characterized by, The smoke concentration detection device further comprises: A control device, which is electrically connected with the photoelectric detection device; A data processing device, which is electrically connected with the control device.

12. The smoke concentration detecting apparatus of the heat-not-burn tobacco according to claim 1, characterized by, The wavelength of the emitted light of the light source emitter is not less than 560nm, and the direction of the emitted light is perpendicular to the transparent container.

13. The smoke concentration detecting apparatus of the heat-not-burn tobacco according to claim 1, characterized by, The gas driving device is a gas pump or an air compressor.

14. A method of detecting the concentration of aerosol from heated, not combusted, tobacco, characterised in that, The detection method of the smoke concentration of the heat-not-burn tobacco using the smoke concentration detection device of any one of claims 1 to 13 comprises: Placing the bottom opening of the transparent container in the groove of the cigarette placing device to make the transparent container seamlessly contact with the side wall of the groove; Adjusting the position of the piston of the suction device in the transparent container to make the smoke capacity of the transparent container reach a preset capacity value; Placing the cigarette on the cigarette placing device and inserting the smoking end of the cigarette into the second gas flow channel of the cigarette placing device; Detecting the smoke concentration in the transparent container and recording the concentration data by the data processing device.

15. The method of claim 14, wherein the method further comprises: During the smoke concentration detection process, the flow rate of the suction device is 27.5ml / s, and the opening time period of the suction device is 2s and the closing time period is 30s; When the suction device is in the closed state for 15s to 25s, the transparent container is controlled to move upward to make the smoke in the transparent container be completely discharged from the bottom opening and the gas outlet of the transparent container; Moving the transparent container downward to return to the groove position at the beginning, and then measuring the next puff of smoke until the cigarette is smoked out, and the data processing device automatically records the concentration data in the whole measurement process.

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