Electronic cigarette smoking machine stability evaluation system and evaluation method

Abstract

The application provides a system for evaluating the stability of an electronic cigarette smoking machine, comprising an aerosol stabilizing device, a smoking machine connected to the aerosol stabilizing device, and a release detection device; the aerosol stabilizing device is used to provide the smoking machine with nicotine content stable electronic cigarette aerosol, and comprises a combination of atomizing chambers composed of multiple atomizing chambers and a mixing chamber, each atomizing chamber is connected to the mixing chamber, the mixing chamber is connected to the smoking machine, and the combination of atomizing chambers is composed of nicotine atomizing chambers and several non-nicotine atomizing chambers. Thus, the above evaluation system realizes separate atomization of nicotine and non-nicotine components, weakens or eliminates the interference of other components in the atomized substance on nicotine, and ensures the accuracy and stability of the nicotine content in the mixing chamber; taking nicotine content standard substance as a standard, in combination with the smoking machine and the aerosol measuring device, the evaluation of the stability of the smoking machine is realized. The application also provides a method for evaluating the stability of an electronic cigarette smoking machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic cigarettes, in particular to an electronic cigarette smoking machine stability evaluation system and method. BACKGROUND

[0002] Electronic cigarettes have developed very rapidly due to their good taste, rich flavors, and low hazards while providing nicotine satisfaction. The National Standardization Committee recently issued the GB 41700-2022 "Electronic Cigarette" national standard, which stipulates that the nicotine concentration in the electronic cigarette atomization product is not higher than 20 mg / g, and the total nicotine content should not be higher than 200 mg; the nicotine release amount per puff in the release product is not higher than 0.2 mg, the formaldehyde release amount is not higher than 7 µg, the acetaldehyde release amount is not higher than 30 µg, the propylene aldehyde release amount is not higher than 5 µg, and the 2,3-butanedione release amount is not higher than 2.5 µg. The above indexes are obtained by detecting the captured nicotine after the electronic cigarette smoking machine is smoked according to the standard conditions.

[0003] Existing research shows that the content of compounds in the electronic cigarette release is not stable, but it cannot be judged whether the difference is caused by the electronic cigarette atomization sample itself or the instability of the smoking machine during the smoking process. Therefore, evaluating the stability of the electronic cigarette smoking machine is very important for the detection of the entire electronic cigarette release. At present, the electronic cigarette smoking machine stability evaluation device and method are still blank. SUMMARY

[0004] Therefore, an object of the present application is to provide an electronic cigarette smoking machine stability evaluation system, which first designs a nicotine atomization chamber and an electronic cigarette atomization product non-nicotine atomization chamber, and then designs an atomization product mixing chamber, to realize separate atomization of the atomization product components, weaken or eliminate the interference of other components in the atomization product except nicotine on nicotine, and ensure the accuracy and stability of the nicotine content in the atomization product mixing chamber; taking the nicotine content standard as the standard, combined with the smoking machine and the aerosol measuring device, the stability of the smoking machine is evaluated.

[0005] Another object of the present application is to provide an electronic cigarette smoking machine stability evaluation method, which first separately atomizes the nicotine and non-nicotine components in the electronic cigarette atomization product, then mixes the atomized atomization product, weakens or eliminates the interference of other components in the atomization product except nicotine on nicotine, and ensures the accuracy and stability of the nicotine content; then taking the nicotine content as the reference, the stability of the smoking machine is evaluated.

[0006] In order to achieve the above-mentioned objects, the present application provides the following technical solutions:

[0007] A kind of electronic cigarette smoking machine stability evaluation system, including aerosol stabilizing device, with the aerosol stabilizing device connection smoking machine and for detecting the nicotine content of the release of release detection device of smoking machine;

[0008] Wherein, the aerosol stabilizing device, for providing the nicotine content stable electronic cigarette aerosol to the smoking machine, including by multiple atomization warehouse composition atomization warehouse combination and for accommodating the mixed cavity of the electronic cigarette aerosol, each atomization warehouse is connected with the mixed cavity, the mixed cavity is connected with the smoking machine, wherein, the atomization warehouse combination is composed of nicotine atomization warehouse and several non-nicotine atomization warehouse.Several non-nicotine atomization warehouse is used to heat the component of nicotine atomization electronic cigarette atomization, i.e. non-nicotine atomization component.

[0009] Electronic cigarette aerosol into the mixed cavity is the aerosol of existing electronic cigarette liquid or the aerosol of existing solid electronic cigarette. Preferably, the non-nicotine atomization component includes propylene glycol and glycerol. More preferably, the mass ratio of nicotine, glycerol and propylene glycol in the electronic cigarette liquid aerosol in the mixed cavity is 1-5:40-50:40-50.

[0010] Based on the above, the aerosol stabilizing device further includes a flow control valve connected with each atomization warehouse respectively, and the flow control valve is used to control the nicotine content in the electronic cigarette aerosol entering the mixed cavity. Wherein, the flow control valve can be a multi-interface flow control valve connected with the gas outlet of each atomization warehouse simultaneously, or a plurality of one-way flow control valves individually connected with the gas outlet of each atomization warehouse.

[0011] Based on the above, the aerosol stabilizing device further includes a micro pump for uniformly mixing the aerosol discharged from each atomization warehouse into the mixed cavity.

[0012] Based on the above, the micro pump is installed in the mixed cavity; thus, while saving the electronic cigarette aerosol mixed uniformly, the aerosol stabilizing device is more compact.

[0013] Based on the above, the aerosol stabilizing device further includes a flue with a micro pump installed, one end of the flue is connected with the flow control valve, and the other end is connected with the mixed cavity. Thus, the electronic cigarette aerosol is mixed uniformly before entering the mixed cavity, which can be directly sucked by the smoking machine, reducing the residence time of the electronic cigarette aerosol in the mixed cavity.

[0014] Based on the above, a heating element, a heating control board and a control button are arranged in each nicotine atomization warehouse. Wherein, the heating control board is respectively provided with a time adjustment module for adjusting the heating time. The heating element is a resistance heating element, an electromagnetic heating element or an ultrasonic heating element.

[0015] Based on the above, a plurality of said atomization cartridges are arranged side by side or arranged in concentric circles.

[0016] Among them, the several non-nicotine atomization cartridges are composed of a non-nicotine component atomization cartridge, which is used to heat and atomize other components in the atomization except nicotine, which can be a mixture of propylene glycol and glycerol, or a mixture of propylene glycol, glycerol and atomization additives. A plurality of said atomization cartridges can be arranged in a multi-layer structure of concentric circles, or can be arranged compactly in concentric circles.

[0017] The several non-nicotine atomization cartridges include propylene glycol atomization cartridges and glycerol atomization cartridges. That is, the several non-nicotine atomization cartridges can be composed of propylene glycol atomization cartridges and glycerol atomization cartridges, or can be composed of propylene glycol atomization cartridges, glycerol atomization cartridges and atomization additives.

[0018] Based on the above, the release detection device is GC-FID, GC-MS or GC-MS.

[0019] The present application provides a method for evaluating the stability of an electronic cigarette smoking machine, comprising the steps of:

[0020] determining the actual value of the nicotine content, providing nicotine and non-nicotine components that can constitute an electronic cigarette liquid; atomizing nicotine and the non-nicotine components separately first, then uniformly mixing the atomized nicotine and non-nicotine components to form an electronic cigarette liquid aerosol, and the actual value of the nicotine content in the electronic cigarette liquid aerosol is X;

[0021] obtaining a group of nicotine content measurement values, using a smoking machine to smoke the electronic cigarette liquid aerosol and capturing the release of the smoking machine; detecting the nicotine content in the release of the smoking machine to obtain a group of nicotine content measurement values X';

[0022] obtaining a plurality of groups of nicotine content measurement values, repeating the steps of "determining the actual value of the nicotine content" and "obtaining a group of nicotine content measurement values" in a cycle, and a plurality of groups of nicotine content measurement values X';

[0023] evaluating the stability of the smoking machine, analyzing and processing a plurality of groups of nicotine content measurement values X' and the actual value X, and judging the stability of the electronic cigarette smoking machine according to the analysis and processing results.

[0024] Based on the above, the step of evaluating the stability of the smoking machine includes: calculating the standard deviation σ of a plurality of groups of nicotine content measurement values X', when the difference between all measurement values X' of the nicotine content and the actual value X is less than or equal to 2σ, it is judged that the smoking machine is stable; when the difference between any measurement value X' of the nicotine content and the actual value X is greater than 2σ, it is judged that the smoking machine is unstable.

[0025] Based on the above, the step of determining the actual value of the nicotine content includes:

[0026] Nicotine, propylene glycol and glycerol are provided to form an electronic liquid;

[0027] The nicotine is added to a nicotine atomization chamber to be atomized alone to form a nicotine aerosol;

[0028] The propylene glycol and glycerol are added to the same non-nicotine atomization chamber to be atomized to form a solvent aerosol, or the propylene glycol is added to a propylene glycol atomization chamber and the glycerol is added to a glycerol atomization chamber to be atomized separately to form a propylene glycol aerosol and a glycerol aerosol;

[0029] The nicotine aerosol and the solvent aerosol are mixed in a mixing chamber to form an electronic liquid aerosol, or the nicotine aerosol, the propylene glycol aerosol and the glycerol aerosol are mixed in the mixing chamber to form an electronic liquid aerosol;

[0030] The actual value X of the nicotine content in the mixing chamber is controlled.

[0031] Based on the above, a method for evaluating the stability of an electronic cigarette smoking machine includes:

[0032] The step of determining the actual value of the nicotine content includes: providing nicotine, propylene glycol and glycerol in a predetermined proportion according to the composition of the electronic liquid, passing the aerosol formed by the nicotine, propylene glycol and glycerol into the mixing chamber to form an electronic liquid aerosol, and determining that the actual value of the nicotine content in the electronic liquid aerosol is X;

[0033] The step of obtaining a group of nicotine content measurement values includes: using the smoking machine to completely smoke the electronic liquid aerosol, and capturing the smoking release of the smoking machine; detecting the nicotine content in the smoking release of the smoking machine according to the GB 41700-2022 standard, and obtaining a group of nicotine content measurement values X';

[0034] The step of obtaining a plurality of groups of nicotine content measurement values includes: repeatedly providing nicotine, propylene glycol and glycerol in the predetermined proportion and adding them to the corresponding atomization chambers for atomization, and repeating the steps of determining the actual value of the nicotine content and obtaining a group of nicotine content measurement values to obtain a plurality of groups of nicotine content measurement values X'.

[0035] Based on the above, a method for evaluating the stability of an electronic cigarette smoking machine includes:

[0036] The step of determining the actual value of the nicotine content includes: using the flow control valve to pass the aerosol formed after the nicotine, propylene glycol and glycerol are atomized into the mixing chamber according to the predetermined proportion of the e-liquid composition, mixing to form an e-liquid aerosol, and controlling the amount of the e-liquid aerosol in the mixing chamber to be the single puff amount of the smoking machine, and determining that the actual value of the nicotine content in the single puff of the smoking machine is X.

[0037] The step of obtaining a group of nicotine content measurement values includes: using the smoking machine to completely puff the e-liquid aerosol in the mixing chamber, and capturing the single puff release of the smoking machine; detecting the nicotine content in the single puff release of the smoking machine according to the GB 41700-2022 standard, and obtaining a group of single puff nicotine content measurement values X'.

[0038] The step of obtaining a group of nicotine content measurement values includes: repeatedly using the flow control valve to control the composition and ratio of the e-liquid aerosol passed into the mixing chamber, so that the actual value of the nicotine content passed into the mixing chamber each time is X; and corresponding to the step of "obtaining a group of nicotine content measurement values", a plurality of groups of single puff nicotine content measurement values X' are obtained.

[0039] Therefore, the smoking machine stability evaluation system provided by the present application can realize the evaluation of whether the e-cigarette smoking machine is stable.

[0040] Further, the aerosol stabilizing device in the above-mentioned smoking machine stability evaluation system can control the e-liquid aerosol entering the mixing chamber to be the single puff amount through the flow control valve, thereby ensuring the consistency of the nicotine content in the single puff, so that the aerosol stabilizing device can provide the e-liquid aerosol with stable single puff amount for the smoking machine, and subsequently, by detecting the nicotine content in the single puff release of the smoking machine and analyzing and processing the actual value and the measurement value of the single puff nicotine content, whether the smoking machine is stable can be evaluated. This method is relatively simple, easy to operate, and low in cost.

[0041] The electronic cigarette smoking machine stability evaluation method provided by the present application can avoid the influence of non-nicotine components such as propylene glycol and glycerol on the nicotine content in the electronic cigarette aerosol, so that the nicotine content in the electronic cigarette aerosol is equal to the actual added content X. Then, the smoking machine sucks the electronic cigarette aerosol and captures the release thereof. After that, the nicotine content in the release of the smoking machine is detected, and the steps of sucking and capturing the release of the smoking machine and detecting the nicotine content in the release of the smoking machine are repeated to obtain a plurality of nicotine content measurements X'. Finally, the actual value X and the measurement value X' of the nicotine content are analyzed and processed to evaluate whether the smoking machine is stable. The detection method is simple and conducive to online detection of the stability of the smoking machine.

[0042] Therefore, the smoking machine stability evaluation system and evaluation method provided by the present application can evaluate the stability of the smoking machine based on the nicotine content in the overall electronic cigarette aerosol and the nicotine content in a single puff of the smoking machine. The evaluation system and evaluation method can be used to evaluate the stability of disposable electronic cigarette smoking machines and electronic cigarette smoking machines with replaceable cartridges. The evaluation system and evaluation method can be used to evaluate the stability of liquid electronic cigarette smoking machines and solid electronic cigarette smoking machines. Therefore, the smoking machine stability evaluation system and evaluation method provided by the present application can be used to evaluate the stability of various types of electronic cigarette smoking machines, and have a wide range of applications. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 FIG. 1 is a structural schematic diagram of an electronic cigarette smoking machine stability evaluation system provided by an embodiment of the present application.

[0044] Figure 2 FIG. 2 is a structural schematic diagram of an electronic cigarette smoking machine stability evaluation system provided by another embodiment of the present application.

[0045] Figure 3 FIG. 3 is a structural schematic diagram of an electronic cigarette smoking machine stability evaluation system provided by another embodiment of the present application.

[0046] Figure 4 FIG. 4 is a structural schematic diagram of an electronic cigarette smoking machine stability evaluation system provided by another embodiment of the present application.

[0047] Figure 5 FIG. 5 is a structural schematic diagram of an electronic cigarette smoking machine stability evaluation system provided by another embodiment of the present application.

[0048] Figure 6 FIG. 6 is a schematic diagram of the positional relationship between the atomization chambers in an electronic cigarette smoking machine stability evaluation system provided by another embodiment of the present application.

[0049] In each figure: 1. Nicotine atomizing chamber; 10. Ultrasonic heating element; 12. Heating control panel; 13. Control button; 2. Non-nicotine atomizing chamber; 21. Propylene glycol atomizing chamber; 22. Glycerol atomizing chamber; 3. Mixing cavity; 4. Vaping machine; 5. Nicotine detection device; 6. Control valve; 7. Micro pump; 8. Flue. DETAILED DESCRIPTION

[0050] The technical solutions of the present application will be further described in detail below through specific embodiments.

[0051] Example One

[0052] Please refer to Figure 1 , the present application provides a kind of electronic cigarette vaping machine stability evaluation system, including aerosol stabilizing device, with the aerosol stabilizing device connection vaping machine 4 and for detecting the nicotine content in the release of vaping machine nicotine detection device 5.The vaping machine 4 is the electronic cigarette vaping machine that meets the requirements of "ISO 20768: 2018 Vapour products —Routine analytical vaping machine — Definitions and standard conditions".The nicotine detection device 5 is GC-FID detection device.

[0053] The aerosol stabilizing device is used to provide the electronic cigarette aerosol with stable nicotine content to the vaping machine 4, which includes atomizing chamber combination and mixing cavity 3.The atomizing chamber combination is used to flow into the electronic cigarette aerosol in the mixing cavity 3 according to the existing electronic cigarette liquid or solid electronic cigarette composition ratio.

[0054] The atomizing chamber combination is composed of nicotine atomizing chamber 1 and non-nicotine atomizing chamber 2 arranged side by side.The nicotine atomizing chamber 1 is used to heat and atomize nicotine to form nicotine aerosol.The non-nicotine atomizing chamber 2 is used to heat and atomize the remaining ingredients in the electronic cigarette liquid except nicotine, in this embodiment, the non-nicotine atomizing chamber 2 is used to heat and atomize the mixed solution of propylene glycol and glycerol to form solvent aerosol.The gas outlet of each atomizing chamber is connected with the inlet of the mixing cavity 3, the outlet of the mixing cavity 3 is connected with the inlet of the vaping machine 4, the nicotine atomizing chamber 1 and the non-nicotine atomizing chamber 2 are connected with the mixing cavity 3 by plug-in structure, and the mixing cavity 3 is connected with the vaping machine by plug-in structure.In other embodiments, the nicotine atomizing chamber 1 and the non-nicotine atomizing chamber 2 can also be connected with the mixing cavity 3, the mixing cavity 3 and the vaping machine 4 by screw, buckle and other ways.

[0055] The atomizing chambers 1, 2 in the atomizing chamber combination are respectively arranged with ultrasonic heating elements 10, heating control boards 12 and control buttons 13. In this embodiment, the heating time is controlled by controlling the on duration of the control buttons 13, and then the nicotine atomization amount and the non-nicotine e-liquid atomization amount are respectively controlled. In other embodiments, the heating control boards 12 can be respectively provided with time adjustment modules capable of adjusting the heating duration. The default heating duration can be adjusted by adjusting the built-in time of the time adjustment modules, and then the nicotine atomization amount and the non-nicotine component atomization amount are adjusted.

[0056] The embodiment provides a method for evaluating the stability of an electronic cigarette smoking machine, which comprises the following steps:

[0057] An actual nicotine content value is determined, and nicotine and non-nicotine components that can constitute e-liquid are provided; the nicotine and the non-nicotine components are atomized respectively, and then the atomized nicotine and the atomized non-nicotine components are uniformly mixed to form e-liquid aerosol, and the actual nicotine content value in the e-liquid aerosol is X;

[0058] A group of nicotine content measurement values are obtained, the e-liquid aerosol is smoked by a smoking machine, and the smoking machine emissions are captured; the nicotine content in the smoking machine emissions is detected to obtain a group of nicotine content measurement values X';

[0059] A plurality of groups of nicotine content measurement values are obtained, and the steps of determining the actual nicotine content value and obtaining a group of nicotine content measurement values are repeatedly cycled to obtain a plurality of groups of nicotine content measurement values X';

[0060] The stability of the smoking machine is evaluated, and the plurality of groups of nicotine content measurement values X' and the actual value X are analyzed and processed, and the stability of the electronic cigarette smoking machine is determined according to the analysis and processing results.

[0061] The above evaluation method provided by the embodiment can be implemented by using the evaluation system provided by the embodiment, and specifically:

[0062] An actual nicotine content value is determined, and nicotine, propylene glycol and glycerol are provided according to a predetermined proportion of existing e-liquid. In this embodiment, the mass ratio of nicotine, glycerol and propylene glycol is 3:45:45; the nicotine is added to the nicotine atomizing chamber 1 to be atomized alone to form nicotine aerosol; the propylene glycol and the glycerol are added to the non-nicotine atomizing chamber 2 to be mixed and atomized to form solvent aerosol; the nicotine aerosol and the solvent aerosol are introduced into the mixing chamber 3 to be uniformly formed into e-liquid aerosol, and at this time, the actual nicotine content value X in the e-liquid aerosol is the predetermined proportion value;

[0063] Obtain a set of nicotine content measurement values, use the smoking machine 4 to complete the aerosol smoking of the electronic liquid, and capture the smoking release of the smoking machine; use the nicotine detection device 5 to detect the nicotine content in the smoking release of the smoking machine 5 according to the GB 41700-2022 standard, and obtain the nicotine content measurement value X1';

[0064] Obtain multiple sets of nicotine content measurement values, multiple times according to the mass ratio of nicotine, glycerol and propylene glycol 3:45:45, re-add nicotine, glycerol and propylene glycol mixture to the nicotine atomization bin 1 and the non-nicotine atomization bin 2 respectively, repeat the above steps of "determining the actual value of nicotine content" and "obtaining the nicotine content measurement value", and obtain nicotine content measurement values X2', X3',..., X n ’;

[0065] Evaluate the stability of the smoking machine, calculate the nicotine content measurement values X1', X2', X3',..., X n ’Obtain the standard deviation σ, when the difference between all measurement values X' of nicotine content and the actual value X is less than or equal to 2σ, it can be judged that the stability of the smoking machine 4 is good; when the difference between any measurement value X' of nicotine content and the actual value X is greater than 2σ, it can be judged that the smoking machine 4 is unstable.

[0066] Because the above electronic cigarette smoking machine stability evaluation system provided by the embodiment needs to replace the detected corresponding original additive multiple times, that is, the components of the electronic cigarette atomization object to be detected need to be replaced, therefore, the above evaluation system and evaluation method provided by the embodiment are suitable for evaluating the stability of the electronic cigarette smoking machine with replaceable electronic cigarette cartridges.

[0067] Example two

[0068] Please refer to Figure 2 , the embodiment provides an electronic cigarette smoking machine stability evaluation system, which is mainly different from the embodiment one in that the embodiment further comprises a flow control valve 6 connected to the front end of the mixing chamber 3. The flow control valve 6 is a multi-interface flow control valve, and the front end thereof is connected to the outlets of the nicotine atomization bin 1 and the non-nicotine atomization bin 2 respectively. The flow control valve 6 is mainly used to control the proportion of nicotine aerosol and solvent aerosol flowing into the mixing chamber 3, so that the nicotine content of the electronic cigarette aerosol in the mixing chamber 3 is more accurate and stable.

[0069] In other embodiments, single-interface flow control valves can be respectively installed on the nicotine atomization bin 1 and the non-nicotine atomization bin 2, and the other ends of the two single-interface flow control valves are connected to the mixing chamber 3.

[0070] The embodiment also provides an electronic cigarette smoking machine stability evaluation method, which uses the above evaluation system to evaluate the stability of the smoking machine, specifically:

[0071] The actual value of the nicotine content is determined, nicotine is added to the nicotine atomization chamber 1 to form a nicotine aerosol by separate atomization, propylene glycol and glycerol are added to the non-nicotine atomization chamber 2 in a mass ratio of 1:1 to form a solvent aerosol by mixed atomization, the flow control valve 6 is used to control the mass ratio of the nicotine aerosol and the solvent aerosol to be 1:30 when they are mixed into the mixing chamber 3 to form an electronic cigarette liquid aerosol, and the amount of the electronic cigarette liquid aerosol in the mixing chamber 3 is controlled to be the single puff amount of the smoking machine. At this time, the actual value X of the single puff nicotine content in the mixing chamber 3 can be determined. In other embodiments, the amounts of nicotine, propylene glycol and glycerol are controlled according to the composition ratio of existing other electronic cigarette liquids.

[0072] A group of nicotine content measurement values are obtained, the electronic cigarette liquid aerosol in the mixing chamber 3 is completely puffed by the smoking machine 4, and the puffing release of the smoking machine is captured. The nicotine content in the puffing release of the smoking machine 5 is detected by the nicotine detection device 5 according to the GB 41700-2022 standard, and the single puff nicotine content measurement value X1' is obtained.

[0073] A plurality of groups of nicotine content measurement values are obtained, the composition and ratio of the electronic cigarette liquid aerosol flowing into the mixing chamber 3 are re-controlled by the flow control valve 6, so that the actual value of the nicotine content flowing into the mixing chamber 3 is X each time. Corresponding to the above-mentioned "obtaining nicotine content measurement value" step, the single puff nicotine content measurement values X2', X3',..., Xn' are obtained. n ’;

[0074] The stability of the smoking machine is evaluated, which is the same as the "evaluating the stability of the smoking machine" step in the evaluation method provided in Embodiment One.

[0075] The above-mentioned electronic cigarette smoking machine stability evaluation system provided in the embodiment only needs to control the consistency of the composition of the electronic cigarette liquid aerosol flowing into the mixing chamber 3 by the flow control valve 6 each time to realize the detection of the nicotine content in the puffing release of the smoking machine, and does not need to replace the electronic cigarette liquid. Therefore, the above-mentioned evaluation system and evaluation method provided in the embodiment can be applied to evaluate the stability of the electronic cigarette smoking machine with replaceable electronic cigarette cartridges and the disposable electronic cigarette smoking machine. In addition, the above-mentioned smoking machine evaluation method provided in the embodiment is more convenient and low in cost.

[0076] Embodiment Three

[0077] Please refer to Figure 3The embodiment provides a stability evaluation system of an electronic cigarette smoking machine, and the main difference from the second embodiment is that the stability evaluation system of the electronic cigarette smoking machine further comprises a micro pump 7 installed in the mixing cavity 3, and the aerosol is drawn into the mixing cavity 5 by the power of the micro pump 7 to mix, so that the mixing of the atomized components is more sufficient, and the electronic cigarette aerosol is more real for the smoking machine.

[0078] In addition, the micro pump 7 can also be arranged in the mixing cavity 3 of the evaluation system provided in the first embodiment.

[0079] Embodiment four

[0080] Please refer to Figure 4 The embodiment provides a stability evaluation system of an electronic cigarette smoking machine, and the main difference from the third embodiment is that the stability evaluation system of the electronic cigarette smoking machine further comprises a flue 8 for installing the micro pump 7, the flue 8 is connected with the outlet of the inlet flow control valve 6, and the outlet of the flue 8 is connected with the inlet of the mixing cavity 3. In this way, the electronic cigarette aerosol is mixed uniformly before entering the mixing cavity, and the smoking machine can be directly sucked, so that the residence time of the electronic cigarette aerosol in the mixing cavity is reduced.

[0081] Embodiment five

[0082] Please refer to Figure 5 The embodiment provides a stability evaluation system of an electronic cigarette smoking machine, and the main difference from the fourth embodiment is that the nicotine atomization bin 1 and the non-nicotine atomization bin 2 are sleeved to form a multi-layer structure, the nicotine atomization bin 1 is wrapped outside the non-nicotine atomization bin 2, the interlayer of the nicotine atomization bin 1 and the non-nicotine atomization bin 2 forms a storage space of non-nicotine components in the electronic cigarette liquid, the bin door of the nicotine heating bin 2 is arranged on the side or the bottom, and the bin door of the non-nicotine heating bin 3 is arranged on the bottom. In this way, the nicotine atomization bin 1 and the non-nicotine atomization bin 2 are integrated into the interlayer structure in the embodiment, the overall volume is smaller, and the occupied space is smaller.

[0083] In addition, the nicotine atomization bin 1 and the non-nicotine atomization bin 2 in the evaluation system provided in the first to fourth embodiments can also be integrated into the interlayer structure.

[0084] The third to fifth embodiments also respectively provide an evaluation method for the stability of an electronic cigarette smoking machine, and the evaluation method is basically the same as the method provided in the second embodiment.

[0085] Embodiment six

[0086] Please refer to Figure 6 and Figure 4The embodiment provides a stability evaluation system of an electronic cigarette smoking machine, and the main difference from the fourth embodiment is that the atomization chamber combination in the aerosol stabilizing device in the embodiment is composed of a nicotine atomization chamber 1, a propylene glycol atomization chamber 21 and a glycerol atomization chamber 22, and is respectively used for heating and atomizing nicotine, propylene glycol and glycerol to form nicotine aerosol, propylene glycol aerosol and glycerol aerosol; the outlets of the nicotine atomization chamber 1, the propylene glycol atomization chamber 21 and the glycerol atomization chamber 22 are respectively connected with a flow control valve 6, the flow control valve 6 controls the proportioning and content of the nicotine aerosol, the propylene glycol aerosol and the glycerol aerosol in the mixing cavity 3. The embodiment avoids the mutual interference of the components of the electronic cigarette liquid in the atomization process, and improves the accuracy and stability of the detection result.

[0087] In other embodiments, the nicotine atomization chamber 1, the propylene glycol atomization chamber 21 and the glycerol atomization chamber 22 can also be integrated into a sandwich structure. In addition, the atomization chamber combination structure in the stability evaluation system of the electronic cigarette smoking machine provided in the first to third embodiments can also adopt the atomization chamber combination structure provided in the embodiment.

[0088] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application rather than limit them; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application.

Claims

1. A stability evaluation system for electronic cigarette smoking machines, characterized in that, The device includes an aerosol stabilizing device, a smoking machine connected to the aerosol stabilizing device, and an emission detection device for detecting the nicotine content emitted by the smoking machine. The aerosol stabilizing device, used to provide the smoking machine with electronic cigarette aerosol with a stable nicotine content, includes an aerosol chamber assembly consisting of multiple aerosol chambers, a flow control valve connected to each aerosol chamber, a mixing chamber for containing the electronic cigarette aerosol, and a micro pump. Each aerosol chamber is connected to the mixing chamber. The flow control valve is used to control the nicotine content in the electronic cigarette aerosol entering the mixing chamber. The mixing chamber is connected to the smoking machine. The micro pump is used to uniformly mix the aerosol discharged from each aerosol chamber into the mixing chamber. The aerosol chamber assembly consists of a nicotine aerosol chamber and several non-nicotine aerosol chambers.

2. The evaluation system according to claim 1, characterized in that, The micropump is installed in the mixing chamber.

3. The evaluation system according to claim 1, characterized in that, The aerosol stabilizing device also includes a flue for installing the micro pump, one end of which is connected to the flow control valve and the other end of which is connected to the mixing chamber.

4. The evaluation system according to claim 1, 2, or 3, characterized in that, Each nicotine atomizing chamber is equipped with a heating element, a heating control panel, and control buttons.

5. The evaluation system according to claim 4, characterized in that, The heating control board is equipped with a time adjustment module that allows for adjustable heating duration.

6. The evaluation system according to claim 1, 2, or 3, characterized in that, Multiple atomizing chambers are arranged side by side or in a concentric circle.

7. The evaluation system according to claim 1, characterized in that, The release detection device is GC-FID, GC-MS, or GC-MS.

8. A method for evaluating the stability of an electronic cigarette smoking device, wherein the evaluation method employs the evaluation system described in any one of claims 1 to 7, comprising the steps of: Determine the actual value of nicotine content, and provide nicotine and non-nicotine components that can be used to form e-liquid; first, atomize the nicotine and the non-nicotine components separately, and then uniformly mix the atomized nicotine and non-nicotine components to form an e-liquid aerosol, wherein the actual value of nicotine content in the e-liquid aerosol is X; A set of nicotine content measurements were obtained by using a smoking machine to draw in the electronic e-liquid aerosol and collecting the emissions from the smoking machine; the nicotine content in the emissions from the smoking machine was detected, and a set of nicotine content measurements X' were obtained. Multiple sets of nicotine content measurements are obtained, and the steps of "determining the actual nicotine content" and "obtaining a set of nicotine content measurements" are repeated cyclically to obtain multiple sets of nicotine content measurements X'. To evaluate the stability of the smoking device, multiple sets of measured nicotine content values ​​X' and actual values ​​X were analyzed and processed. The stability of the electronic cigarette smoking device was judged based on the analysis and processing results.

9. The evaluation method according to claim 8, characterized in that, The steps for evaluating the stability of the smoking machine include: calculating the standard deviation σ of multiple sets of nicotine content measurement values ​​X'; when the difference between all measured values ​​X' of nicotine content and the actual value X is less than or equal to 2σ, the smoking machine is judged to be stable; when the difference between any measured value X' of nicotine content and the actual value X is greater than 2σ, the smoking machine is judged to be unstable.

10. The evaluation method according to claim 8 or 9, characterized in that, The steps for determining the actual nicotine content include: It provides nicotine, propylene glycol, and glycerol, which can be used to make e-cigarette liquids; Nicotine is added to the nicotine atomization chamber and atomized separately to form nicotine aerosol; Propylene glycol and glycerol are added to the same non-nicotine atomizing chamber and atomized to form solvent aerosols, or propylene glycol is added to a propylene glycol atomizing chamber and glycerol is added to a glycerol atomizing chamber and atomized to form propylene glycol aerosols and glycerol aerosols respectively. The nicotine aerosol and solvent aerosol are mixed in a mixing chamber to form an electronic cigarette liquid aerosol, or the nicotine aerosol, propylene glycol aerosol and glycerol aerosol are mixed in a mixing chamber to form an electronic cigarette liquid aerosol. Control the actual value X of nicotine content in the mixing chamber.

11. The evaluation method according to claim 10, characterized in that, The step of determining the actual value of nicotine content includes: providing nicotine, propylene glycol and glycerol in a predetermined ratio according to the composition of the e-liquid; introducing the aerosol formed by nicotine, propylene glycol and glycerol into the mixing chamber to form an e-liquid aerosol; and determining the actual value of nicotine content in the e-liquid aerosol as X. The steps for obtaining a set of nicotine content measurement values ​​include: using the smoking machine to completely inhale the electronic cigarette liquid aerosol, collecting the inhalation release of the smoking machine; detecting the nicotine content in the inhalation release of the smoking machine according to GB 41700-2022 standard, and obtaining a set of nicotine content measurement values ​​X'. The steps for obtaining multiple sets of nicotine content measurements include: repeatedly providing nicotine, glycerol, and propylene glycol according to the predetermined ratio, adding them to the corresponding atomizing chamber for atomization, and repeating the steps of "determining the actual value of nicotine content" and "obtaining a set of nicotine content measurements" to obtain multiple sets of nicotine content measurements X'.

12. The evaluation method according to claim 10, characterized in that, The steps for determining the actual nicotine content include: using a flow control valve to atomize nicotine, propylene glycol, and glycerol to form an aerosol, which is then introduced into the mixing chamber according to a predetermined ratio of e-liquid components, to form an e-liquid aerosol, and controlling the amount of e-liquid aerosol in the mixing chamber to be the single-puff inhalation volume of the smoking machine, thereby determining the actual nicotine content of the single-puff inhalation volume of the smoking machine to be X. The steps for obtaining a set of nicotine content measurement values ​​include: using the smoking machine to completely inhale the electronic e-liquid aerosol in the mixing chamber in one go, collecting the single-puff release from the smoking machine; detecting the nicotine content in the single-puff release from the smoking machine according to GB 41700-2022 standard, and obtaining a set of single-puff nicotine content measurement values ​​X'. The step of obtaining multiple sets of nicotine content measurement values ​​includes: repeatedly using the flow control valve to control the composition and ratio of the e-liquid aerosol introduced into the mixing chamber, so that the actual value of nicotine content introduced into the mixing chamber each time is X; correspondingly repeating the step of "obtaining a set of nicotine content measurement values" to obtain multiple sets of single-puff nicotine content measurement values ​​X'.

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