An aerosol biomimetic generation device and method

Abstract

The application discloses an aerosol bionic generating device, which comprises a cylinder body, a piston assembly, a first cavity, a first gas channel, a second gas channel and a third gas channel. The piston assembly comprises a piston which is slidably arranged in the cylinder body. One side end surface of the piston assembly and one end inner surface and an inner side wall of the cylinder body form the first cavity. The volume of the first cavity can change with the movement of the piston. The first gas channel can be connected with the first cavity and is used for introducing aerosol into the first cavity. The second gas channel can be connected with the first cavity and is used for introducing dilution gas into the first cavity. The third gas channel can be connected with the first cavity and is used for discharging the gas in the first cavity. The application can simulate the real smoking process of human bodies and generate aerosol close to the real smoking state of human bodies. The application further provides an aerosol bionic generating method based on the aerosol bionic generating device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tobacco, in particular to an aerosol biomimetic generating device and method. BACKGROUND

[0002] Traditional cigarettes, heat-not-burn cigarettes, electronic cigarettes and other tobacco products are products for human consumption by generating smoke. For many years, in order to study the smoking behavior of smokers, the health and safety risk assessment of smoking, the product quality monitoring, the smoke formation mechanism, the chemical composition of smoke, etc., it is usually necessary to simulate the human smoking behavior by mechanical suction, such as simulating the suction volume, suction interval time, suction pressure change and other parameters when the human body actually sucks, to obtain the smoke required for research and analysis. In practice, a special smoking machine (ISO 3308, ISO 20778) specified by international standards is often used to generate the required smoke for research by mechanical suction. When the smoke overflows from the end of the cigarette, it is sucked and discharged by a piston syringe connected with a two-position three-way valve, and the whole or part of the smoke is intercepted or collected for research. In order to prevent tar from condensing on the inner wall of the syringe and causing pollution and damage to the core components of the smoking machine, the smoke cannot directly enter the suction syringe and must be filtered through a Cambridge filter first to remove the particulate phase containing tar with a particle size greater than 0.3 μm. The volume of the collected smoke for each puff is generally controlled at tens of milliliters, for example, 35 mL / puff, 55 mL / puff.

[0003] The current smoke collection method mainly has the following problems: the generation process of aerosol is the condensation, collision and dispersion of various gas and particulate matter in the smoke in the airflow. Under the limitation of the standard method and the volume of the smoking machine syringe, the particle concentration of the 35 ml, 55 mL small volume smoke collected will be very high. The actual process of aerosol generation by a consumer smoking is that a negative pressure is first generated by the suction action of the mouth, the smoke is sucked into the mouth from the mouth end of the cigarette, then a large amount of air is sucked into the mouth through the mouth to bring the smoke into the lungs, and finally the smoke is exhaled through the mouth and nose. In this process, the concentration and particle size distribution of the smoke change to a great extent. At the same time, the filter in the device filters out the particulate matter larger than 0.3 μm in the smoke, which also causes the collected smoke to be inconsistent with the actual state of the smoke sucked by the human body. Therefore, the particle size distribution and smoke concentration of the aerosol generated by the collected smoke by the smoking machine are quite different from the actual situation, which will greatly affect the results of the subsequent smoke property research. SUMMARY

[0004] The purpose of this invention is to solve the problem that the particle size distribution and smoke concentration of aerosols generated by current smoke collection methods differ significantly from real-world conditions. This invention provides a biomimetic aerosol generator that can simulate the actual human smoking process, producing aerosols that closely resemble the state of real human inhalation.

[0005] To address the aforementioned technical problems, embodiments of the present invention disclose an aerosol biomimetic generating device, comprising:

[0006] Cylinder block;

[0007] A piston assembly includes a piston that is slidably disposed in a cylinder; one end face of the piston assembly, one end inner surface of the cylinder, and the inner sidewall form a first cavity, the volume of which can change with the movement of the piston.

[0008] The first airway is connected to the first cavity and is used to introduce aerosols into the first cavity.

[0009] The second airway can be connected to the first cavity and is used to introduce dilution gas into the first cavity;

[0010] The third airway connects to the first cavity and is used to expel gas from the first cavity.

[0011] Using the above technical solution, the volume of gas input into the first chamber can be controlled by piston movement. Since the first chamber can be connected to the first airway for conveying aerosol and the dilution gas, after collecting a set amount of aerosol directly generated by the aerosol generating product, a certain amount of dilution gas can be introduced into the first chamber to obtain aerosols generated under biomimetic actual suction conditions with different dilution ratios, which meets the needs of subsequent detection and related research.

[0012] As a specific implementation of this embodiment, it also includes,

[0013] The flexible collection section is detachably installed in the first cavity, and the inlet of the flexible collection section can be connected to the first air passage, the second air passage and the third air passage respectively.

[0014] A valve, located on the cylinder body, is used to control the flow of air between the first chamber and the outside air.

[0015] The technical scheme is adopted, the flexible collecting part is arranged in the first cavity, the flexible collecting part is used for collecting the gas, different flexible collecting parts are replaced when collecting aerosols of different samples, aerosols of different samples are prevented from being condensed on the side wall of the first cavity when the first cavity is directly used for collecting the gas, mutual pollution of the aerosols of different samples is avoided, and the accuracy of the detection result is ensured. The valve is arranged on the cylinder body, the gas in the first cavity is discharged, the piston is moved to form negative pressure in the first cavity when the flexible collecting part collects the gas, and the aerosol or the dilution air enters the flexible collecting part.

[0016] As a specific embodiment of the embodiment, the flexible collecting part is made of an inert film material.

[0017] As a specific embodiment of the embodiment, one end of the cylinder body is a cylinder cover plate arranged in an open and closed manner, and the valve is arranged on the cylinder cover plate.

[0018] The technical scheme is adopted, the flexible collecting part is arranged in the first cavity, the flexible collecting part is used for collecting the gas, different flexible collecting parts are replaced when collecting aerosols of different samples, aerosols of different samples are prevented from being condensed on the side wall of the first cavity when the first cavity is directly used for collecting the gas, mutual pollution of the aerosols of different samples is avoided, and the accuracy of the detection result is ensured. The piston is moved to form negative pressure in the first cavity when the flexible collecting part collects the gas, and the aerosol or the dilution air enters the flexible collecting part.

[0019] As a specific embodiment of the embodiment, the number of the pistons is multiple.

[0020] As a specific embodiment of the embodiment, the piston includes a first piston and at least one second piston, the cross-sectional area of the end face of the first piston is greater than the cross-sectional area of the end face of the second piston, the first piston is in sliding fit with the inner side wall of the cylinder body, and the first piston is provided with sliding channels in sliding fit with all the second pistons.

[0021] The technical scheme is adopted, the piston of different cross-sectional areas is moved, the volume change amount is adjusted with different precision when collecting different volumes of gas, the first piston with a large cross-sectional area can quickly adjust a large volume change amount, and the second piston with a small cross-sectional area can finely adjust the volume change amount. The two pistons with different cross-sectional areas are matched with each other, the efficiency of collecting the gas and the precision of the collected gas amount are considered.

[0022] As a specific embodiment of the embodiment, the piston assembly further includes a fixing block arranged in the cylinder body, the fixing block is provided with holes equal in number to the pistons, and each piston is arranged in sliding fit in each hole.

[0023] The technical scheme is adopted, the piston of different cross-sectional areas is moved, the volume change amount is adjusted with different precision when collecting different volumes of gas, the first piston with a large cross-sectional area can quickly adjust a large volume change amount, and the second piston with a small cross-sectional area can finely adjust the volume change amount. The two pistons with different cross-sectional areas are matched with each other, the efficiency of collecting the gas and the precision of the collected gas amount are considered.

[0024] As a specific embodiment of the embodiment, the piston is connected with a driving part.

[0025] As a specific embodiment of the embodiment, the first valve body is further provided with the first gas channel, the second gas channel and the third gas channel.

[0026] As a specific embodiment of the present embodiment, a control device is further included, which is connected with the first valve body and the driving part respectively.

[0027] As a specific embodiment of the present embodiment, a gas pump capable of being connected with the third air channel is further included, which is used for pumping out the gas stored in the flexible collecting part; the gas pump is connected with the control device.

[0028] By using the above technical scheme, the whole process of emptying, collecting and diluting aerosol and exhausting gas can be automatically controlled by the control device, so that continuous online collection of bionic aerosol is realized, and aerosols in each puffing stage of the aerosol generating sample can be collected, so that complete detection samples are obtained and the aerosol collection efficiency is improved.

[0029] An aerosol bionic generation method is further disclosed in an embodiment of the present application, which is based on the above aerosol bionic generation device and includes the following steps:

[0030] The piston is moved to empty the air in the first cavity;

[0031] The first cavity is connected with the first air channel, and the piston is moved to increase the volume of the first cavity by a first set amount so that a first set amount of aerosol is introduced into the first cavity through the first air channel;

[0032] The connection between the first cavity and the first air channel is disconnected, and the first cavity is connected with the second air channel;

[0033] The piston is moved to increase the volume of the first cavity by a second set amount so that a second set amount of dilution gas is introduced into the first cavity through the second air channel.

[0034] An aerosol bionic generation method is further disclosed in an embodiment of the present application, which is based on the above aerosol bionic generation device and includes the following steps:

[0035] The gas in the flexible collecting part is emptied, and at the same time, the valve is opened, and the piston is moved to exhaust the gas in the first cavity;

[0036] The valve is closed, and the flexible collecting part is connected with the first air channel;

[0037] The piston is moved to increase the volume of the first cavity by a third set amount so that a third set amount of aerosol is introduced into the flexible collecting part through the first air channel;

[0038] The connection between the flexible collecting part and the first air channel is disconnected, and the flexible collecting part is connected with the second air channel;

[0039] The piston is moved to increase the volume of the first cavity by a fourth set amount so that a fourth set amount of dilution gas is introduced into the flexible collecting part through the second air channel. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 A schematic diagram of an aerosol bionic generating device according to an embodiment of the present application is shown;

[0041] Figure 2 A schematic diagram of an aerosol bionic generating device according to another embodiment of the present application is shown;

[0042] In the figure, 10 - cylinder, 11 - cylinder cover plate, 12 - valve, 13 - flexible collection part, 20 - piston, 21 - first piston, 22 - second piston, 23 - third piston; 30 - driving part, 31 - first driving part, 32 - second driving part, 33 - third driving part; 40 - first valve body, 41 - first air passage, 42 - second air passage, 43 - third air passage; 50 - second valve body, 60 - air pump. DETAILED DESCRIPTION

[0043] The present application will now be described by way of specific embodiments, from which its advantages and benefits will become apparent to those skilled in the art. Although the present application will be described in conjunction with a preferred embodiment, it will be understood that they are not intended to limit the present application to the embodiments. On the contrary, the intent is to cover all alternatives, modifications, and equivalents as can be included within the scope of the present application as defined by the claims. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application can be practiced without the specific details (e.g., quantities, materials, etc.) set forth in the description below. Furthermore, some specific features, objects, and / or implementations can be described in this specification in terms of functional or logical descriptions. Such descriptions are used only for convenience of description and thus do not limit the claims. Additionally, techniques and apparatuses described and illustrated in the various embodiments as well as additional techniques and apparatuses, can also be used to implement other embodiments and / or claimed applications.

[0044] It should be noted that in this specification, similar reference numbers and characters in the following drawings represent similar items, and thus, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0045] In the description of the present embodiments, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and thus cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be understood as limiting the present application.

[0046] The terms "first", "second", and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the embodiments, it also needs to be explained that, unless explicitly defined and limited, the terms "set", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments can be understood according to the specific circumstances.

[0048] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0049] The embodiment of the present application discloses an aerosol bionic generating device, which comprises a cylinder 10, a piston 20 is arranged in the cylinder 10, one side end surface of the piston 20 and the inner surface and the inner side wall of one end of the cylinder form a first cavity, the volume of the first cavity can change with the movement of the piston 20. It also comprises a first air duct 41, a second air duct 42 and a third air duct 43 which can communicate with the first cavity. Among them, the first air duct 41 is used to introduce aerosol into the first cavity, the second air duct 42 is used to introduce dilution gas into the first cavity, and the third air duct 43 is used to discharge the gas in the first cavity.

[0050] Among them, the first cavity is used to collect smoke; exemplarily, the first cavity is a cavity surrounded by the inner wall of the upper end surface of the piston 20, the inner side wall and the upper end surface of the cylinder 10.

[0051] The dilution gas introduced by the second air duct 42 can be nitrogen, air or other suitable gas, and the dilution gas can be preheated to a certain temperature, for example, 37℃ which simulates the human body environment, to maintain or change the temperature of the aerosol, so that the state of the mixed aerosol is closer to the real state.

[0052] Reference Figure 1 And Figure 2 The movement of the piston 20 is driven by the driving part 30, which can be a cylinder, a hydraulic device, a motor and the like. As a specific embodiment, the driving part 30 is a linear screw motor, the motor is connected with the piston 20 through a screw rod to drive the piston 20 to move. As a preferred embodiment, the motor is a servo motor, which can improve the accuracy of controlling the movement of the piston 20.

[0053] Since the smoker inhales a large amount of air through the oral cavity after the smoke enters the oral cavity, the smoke is brought into the lungs, and then is exhaled through the mouth and nose, therefore, the smoke actually enters the human body after an air dilution process. By using the technical scheme, the volume of the gas in the first cavity can be controlled by moving the piston 20, since the first cavity can be communicated with the first air passage 41 for conveying the aerosol and the second air passage 42 for conveying the dilution gas, the first cavity can be communicated with a certain amount of dilution gas after the collection of the set amount of aerosol generated directly by the aerosol generating article, so as to obtain the aerosol generated in the bionic actual smoking state with different dilution ratios, and meet the needs of subsequent detection and related research.

[0054] Based on the aerosol bionic generation device, an embodiment of the present application further discloses an aerosol bionic generation method, comprising the following steps:

[0055] S11: opening the third air passage 43, moving the piston 20 by the driving part 30 to empty the air in the first cavity.

[0056] S12: connecting the first cavity with the first air passage 41, moving the piston 20 to increase the volume of the first cavity by the first set amount so as to make the first set amount of aerosol pass into the first cavity through the first air passage.

[0057] S13: disconnecting the first cavity from the first air passage 41, and connecting the first cavity with the second air passage 42.

[0058] S14: moving the piston 20 to increase the volume of the first cavity by the second set amount so as to make the second set amount of dilution gas pass into the first cavity through the second air passage.

[0059] As another specific embodiment of the present embodiment, referring to Figure 1 and Figure 2 , the first cavity is further detachably provided with a flexible collection part 13, the inlet of the flexible collection part 13 can be respectively communicated with the first air passage 41, the second air passage 42 and the third air passage 43. A valve 12 is further arranged on the cylinder 10, the valve 12 is used for controlling the communication between the first cavity and the outside air.

[0060] Adopting the technical scheme, when the aerosol is directly collected in the first cavity, the aerosol may not be completely discharged or condense on the side wall of the first cavity, so that cross contamination occurs when the aerosol of the next sample is collected, and the accuracy of the detection result is affected. Therefore, by arranging the detachable flexible collecting part 13 in the first cavity, the flexible collecting part 13 is used to collect the gas, so that the flexible collecting part 13 of a new or different material and different specification can be conveniently replaced when the aerosols of different samples are collected, cross contamination between different samples is prevented, and the accuracy of the detection is improved.

[0061] Exemplarily, the flexible collecting part 13 is made of a high-molecular inert film material, including PTFE, PP and the like.

[0062] Correspondingly, one end of the cylinder body 10 is provided with an openable and closable cylinder cover plate 11, so that the flexible collecting part 13 can be conveniently replaced. The valve 12 is arranged on the cylinder cover plate 11, so that the gas in the first cavity can be discharged before the gas is collected. Before the gas is collected in the flexible collecting part 13, the valve 12 is closed, the piston 20 is moved to reduce the volume of the first cavity, and the gas in the flexible collecting part 13 is discharged by high pressure. When the gas is collected in the flexible collecting part 13, the piston 20 is moved to increase the volume of the first cavity to form negative pressure, so that the aerosol or dilution air enters the flexible collecting part 13.

[0063] As another specific embodiment, the flexible collecting part 13 is connected with a gas pump 60 for discharging the gas stored therein. Before the gas is collected, the gas pump 60 is used to completely discharge the gas in the flexible collecting part 13. At the same time, the valve 12 on the cylinder cover plate 11 is opened, and the piston 20 is moved towards the valve 12 to discharge the air in the first cavity as much as possible. By arranging the gas pump 60, the emptying of the flexible collecting part 13 and the discharge of the gas in the first cavity can be performed at the same time, which is convenient to operate and adjust the volume of the first cavity to prepare for subsequent gas collection.

[0064] Reference Figure 1 and Figure 2 The aerosol biomimetic generation device further comprises a first valve body 40, wherein the first gas channel 41, the second gas channel 42 and the third gas channel 43 are all arranged on the first valve body 40, that is, the first valve body 40 can be a four-way valve. The first valve body 40 is connected with the first cavity through a connecting gas channel thereon. Exemplarily, the connecting gas channel of the first valve body 40 is connected with the inlet of the flexible collecting part 13 through the side wall of the cylinder body 10 forming the first cavity. By the internal conversion of the first valve body 40, the flexible collecting part 13 is connected with the first gas channel 41, the second gas channel 42 or the third gas channel 43 under different conditions.

[0065] Further, the third air passage 43 is capable of being connected with the air pump 60. In some situations, it is required to discharge the aerosol collected in the flexible collecting part 13 for subsequent detection research or emptying, so the flexible collecting part 13 can be connected with the aerosol detection device or the device for collecting aerosol through the third air passage 43, or the third air passage 43 can be directly connected with the outside, so that the aerosol in the flexible collecting part 13 is directly emptied. Exemplarily, the third air passage 43 is connected with the second valve body 50, and the inlet of the second valve body 50 is connected with the third air passage 43. The second valve body 50 includes a first outlet and a second outlet, wherein the first outlet is connected with the air pump 60, and the second outlet is connected with the aerosol detection device or the device for collecting aerosol. Through the switching of the second valve body 50, the third air passage 43 can be connected with the first outlet or the second outlet in different situations, so as to realize the suction of the air in the flexible collecting part 13 through the air pump 60, or realize the transportation of the aerosol in the flexible collecting part 13 to the subsequent detection or storage device, or directly emptying. The second valve body 50 can be a two-position three-way valve, and when emptying, the second outlet can be disconnected with the aerosol detection device or the device for collecting aerosol.

[0066] Further, the embodiment further includes a control device (not shown in the figure), which is connected with the valve 12, the first valve body 40, the second valve body 50, the air pump 60 and the driving part 30 of the piston 20 respectively.

[0067] The whole process of emptying, collecting and diluting aerosol and discharging aerosol of the aerosol bionic generating device is automatically controlled by the control device. For example, the aerosol of each puff capacity can be simulated to be collected, and the aerosol of one puff capacity is diluted and discharged, and then the collection of the next puff of aerosol is carried out. Since the composition of the aerosol of each puff is different in practice, the aerosol of each puff of the aerosol generating sample is continuously collected in the embodiment, so as to obtain a complete detection sample and improve the aerosol collection efficiency.

[0068] As a specific embodiment, the number of the pistons 20 is multiple. Exemplarily, the piston 20 includes a first piston 21 and at least one second piston 22, which will be described with reference to Figure 1 and Figure 2The cross-sectional area of the end surface of the first piston 21 is larger than that of the end surface of the second piston 22, and the first piston 21 is in sliding fit with the inner side wall of the cylinder body 10. The sliding channels are arranged on the first piston 21 and are in fit with all the second pistons 22. When collecting gas with different volumes, the suction volume can be adjusted with different precision by moving the pistons with different cross-sectional areas. For example, the first piston 21 with large cross-sectional area can quickly adjust the large suction volume, and the second piston 22 with small cross-sectional area can finely adjust the suction volume. The mutual cooperation of the two pistons with different cross-sectional areas can balance the efficiency of collecting gas and the precision of the volume of collected gas.

[0069] As an embodiment, the suction volume of the second piston 22 is set to (5-150) mL with a precision of ±0.1 mL, and the suction volume of the first piston 21 is set to (100-8000) mL with a precision of ±0.5 mL. By operating the first piston 21 and the second piston 22, aerosols with different dilution ratios can be collected. The following is an exemplary description:

[0070] Example 1: The second piston 22 operates to generate (35±0.3) mL of aerosol suction volume, and the first piston 21 operates to generate (965±0.5) mL of dilution gas suction volume, and the total suction gas volume is 1000 mL.

[0071] Example 2: The second piston 22 operates to generate (55±0.3) mL of aerosol suction volume, and the first piston 21 operates to generate (945±0.5) mL of dilution gas suction volume, and the total suction gas volume is 1000 mL.

[0072] Example 3: The second piston 22 operates to generate (35±0.3) mL of aerosol suction volume, and the first piston 21 operates to generate (5965±0.5) mL of dilution gas suction volume, and the total suction gas volume is 6000 mL.

[0073] Example 4: The second piston 22 operates to generate (55±0.3) mL of aerosol suction volume, and the first piston 21 operates to generate (5945±0.5) mL of dilution gas suction volume, and the total suction gas volume is 6000 mL.

[0074] As shown in Examples 1-4, the second piston 22 and the first piston 21 can be respectively provided with different suction volumes to form different smoke dilution ratios to meet the research needs of aerosols with various dilution ratios.

[0075] Exemplarily, as Figure 2The example can include two small cross-section second pistons 22, wherein the cross-sectional areas of the two second pistons 22 can be adjusted according to the required adjustment precision of the actual suction amount. Alternatively, the two pistons 20 in sliding fit with the first piston 21 can also be different second pistons 22 and third pistons 23 in cross-sectional area. The first piston 21 is driven by the first driving part 31, and the second piston 22 and the third piston 23 are respectively controlled to operate by the second driving part 32 and the third driving part 33.

[0076] As another specific embodiment, the piston 20 assembly further includes a fixed block arranged in the cylinder body 10, the fixed block is provided with a number of holes equal to the number of pistons 20, and each piston 20 is arranged in sliding fit in each hole. By using multiple groups of small cross-section pistons 20, the machining size of the pistons 20 and the cylinder body 10 in the device can be reduced, the overall manufacturing and assembly difficulty can be reduced, and more accurate control of the suction capacity can be realized by moving the small cross-section pistons 20, thereby improving the control precision of the gas collection capacity.

[0077] Based on the above-mentioned aerosol biomimetic generation device including the flexible collection part 13, the embodiment of the present application further discloses an aerosol biomimetic generation method, including the following steps:

[0078] S21: The gas in the flexible collection part 13 is exhausted, and at the same time, the valve 12 is opened, and the piston 20 is moved to exhaust the gas in the first cavity;

[0079] S22: The valve 12 is closed, and at the same time, the flexible collection part 13 is connected in communication with the first gas channel 41.

[0080] S23: The piston 20 is moved to increase the volume of the first cavity by a third set amount, so that a third set amount of aerosol is introduced into the flexible collection part 13 through the first gas channel.

[0081] S24: The connection between the flexible collection part 13 and the first gas channel 41 is disconnected, and the flexible part is connected in communication with the second gas channel 42.

[0082] S25: The piston 20 is moved to increase the volume of the first cavity by a fourth set amount, so that a fourth set amount of dilution gas is introduced into the flexible collection part through the second gas channel.

[0083] Exemplarily, in step S21, the first air passage 41 and the second air passage 42 of the first valve body 40 are closed first, the third air passage 43 is opened, the second valve body 50 is adjusted to connect the first outlet thereof with the air pump 60, the third air passage 43 is connected with the air pump 60, and the valve 12 is opened. The air in the flexible collecting part 13 is exhausted by suction of the air pump 60. At the same time, the valve 12 is opened, the first piston 21 and the second piston 22 are kept in relative position and move upward together, the air in the first cavity is squeezed and exhausted as much as possible, then the valve 12 and the third air passage 43 of the first valve body 40 are closed. In step S22, the first air passage 41 is opened, the flexible collecting part 13 is connected with the first air passage 41.

[0084] Step S23 and step S23 specifically include that the second piston 22 moves downward first to generate negative pressure in the first cavity according to the set suction volume, the negative pressure in the first cavity is transmitted to the flexible collecting part 13 to make it open and generate negative pressure therein synchronously, a set amount of aerosol directly generated by the aerosol generating article is inhaled through the first air passage 41, and the suction volume is according to the standard specified volume. After the set volume is inhaled, the first air passage 41 of the first valve body 40 is closed and the second air passage 42 is opened, so that the flexible collecting part 13 is connected with the second air passage 42.

[0085] Step S25 specifically includes that the first piston 21 drives the second piston 22 to move downward synchronously to generate suction, and the dilution gas is inhaled from the second air passage 42, and the suction amount is according to the inhaled amount in the actual smoking process of the simulated smoker. Then the second air passage 42 is closed, the third air passage 43 is opened, the second outlet of the second valve body 50 is connected with the device for receiving the aerosol to be detected, the second piston 22 and the first piston 21 are both pushed upward, the air in the first cavity is squeezed, the air-diluted aerosol in the flexible collecting part 13 is discharged through the third air passage 43 of the first valve body 40 and the second outlet of the second valve body 50.

[0086] As another specific embodiment of the present embodiment, the user can also directly simulate the way of smoking by lung suction, i.e. the aerosol directly enters the lung without dilution, which is suitable for the smoke collection of some electronic cigarettes with large smoke amount. The specific steps include the following: the steps of collecting the aerosol are the same as the steps S21 to S23 described above, when the step S23 is completed, the flexible collection part 13 has collected a set amount of aerosol, which can be set to any value in (100-6000) mL or higher. Then the first airway 41 is closed, the third airway 43 is opened, the second outlet of the second valve body 50 is connected to the device for receiving the aerosol to be detected, and the second piston 22 and the first piston 21 are jointly pushed upward to squeeze the air in the first cavity, so that the aerosol in the flexible collection part 13 is discharged through the third airway 43 of the first valve body 40 and the second outlet of the second valve body 50. The simulation process of the suction can obtain large-capacity smoke without air dilution.

[0087] From the above, through the aerosol bionic generation device of the present embodiment, the aerosol close to the real suction state of the human body can be generated, and online continuous collection and generation of aerosol with different dilution ratios can be realized, which can ensure the accuracy of the detection structure and improve the aerosol collection efficiency.

[0088] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood by those skilled in the art that the foregoing is a further detailed description of the present application in connection with exemplary embodiments, and the specific embodiments described are not to be taken as limiting the present application. Those skilled in the art can make various changes in form and details without departing from the spirit and scope of the present application, including making several simple deductions or substitutions.

Claims

1. An aerosol biomimetic generation device, characterized by, The application relates to a cylinder device for aerosol and dilution gas, comprising: a cylinder; a piston assembly comprising a piston slidingly arranged in the cylinder; a first cavity formed by one end surface and an inner side wall of the cylinder and the piston assembly, the volume of the first cavity being changeable with the movement of the piston; a first gas passage capable of communicating with the first cavity for introducing aerosol into the first cavity; a second gas passage capable of communicating with the first cavity for introducing dilution gas into the first cavity; a third gas passage capable of communicating with the first cavity for discharging gas in the first cavity; a plurality of pistons, the pistons comprising a first piston and at least one second piston, the cross-sectional area of the end surface of the first piston being larger than that of the second piston, the first piston being in sliding fit with the inner side wall of the cylinder, the first piston being provided with sliding channels in sliding fit with the second pistons respectively, the piston assembly further comprising a fixed block arranged in the cylinder, the fixed block being provided with holes equal in number to the pistons, each piston being slidingly arranged in the hole; a flexible collecting part detachably arranged in the first cavity, the inlet of the flexible collecting part being capable of communicating with the first gas passage, the second gas passage and the third gas passage respectively; a valve arranged on the cylinder for controlling the communication between the first cavity and the outside air.

2. The aerosol-generating apparatus of claim 1, wherein the heater is configured to heat the aerosol-generating article to a temperature of 150°C to 250°C. The flexible collecting part is made of inert film material.

3. The aerosol-generating apparatus of claim 1, wherein the heater is configured to heat the aerosol-generating article to a temperature of about 150°C to about 250°C. One end of the cylinder is a cylinder cover plate arranged in an openable and closable manner, and the valve is arranged on the cylinder cover plate.

4. The aerosol-generating device of claim 3, wherein the heater is configured to heat the aerosol-generating article to a temperature of 150°C to 200°C. The piston is connected with a driving part.

5. The aerosol-generating device according to claim 4, wherein the heating element is a heating wire. The first gas passage, the second gas passage and the third gas passage are arranged on a first valve body.

6. The aerosol-generating device of claim 5, wherein the heater is configured to heat the aerosol-generating article to a temperature of 150°C to 200°C. A control device is connected with the first valve body and the driving part respectively.

7. The aerosol-generating device of claim 6, wherein the heater is configured to heat the aerosol-generating article to a temperature of 150°C to 200°C. A gas pump capable of communicating with the third gas passage is arranged for discharging the gas stored in the flexible collecting part, and the gas pump is connected with the control device.

8. An aerosol-biomimetic generation method based on the aerosol-biomimetic generation device according to claim 1, characterized by, The application further comprises the following steps: emptying the gas in the flexible collecting part, opening the valve and moving the piston to discharge the gas in the first cavity; closing the valve and connecting the flexible collecting part with the first gas passage; moving the piston to increase the volume of the first cavity by a third set amount so that the third set amount of aerosol is introduced into the flexible collecting part through the first gas passage; disconnecting the flexible collecting part from the first gas passage and connecting the flexible collecting part with the second gas passage; moving the piston to increase the volume of the first cavity by a fourth set amount so that the fourth set amount of dilution gas is introduced into the flexible collecting part through the second gas passage.

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