CN217855383U - Heating cigarette aerosol trapping device - Google Patents

Abstract

The application relates to a heating cigarette aerosol entrapment device, it includes: the aerosol generating mechanism, the aerosol collecting mechanism and the gas-liquid mixing mechanism; the aerosol generating mechanism comprises: smoking articles and cartridges; the aerosol trapping mechanism comprises: an air inlet pipeline and an injector; the small hole of the syringe of the injector is communicated with the air inlet pipeline; the gas-liquid mixing mechanism includes: the device comprises a mixing cavity, an atomizer, a liquid inlet pipeline, a peristaltic pump, a return pipeline and a solvent bottle; the head end of the liquid inlet pipeline extends into the top of the mixing cavity; the tail end of the liquid inlet pipeline is connected with a solvent bottle; the peristaltic pump is arranged on the liquid inlet pipeline; the head end of the return pipeline is communicated with the bottom of the mixing cavity, and the tail end of the return pipeline is connected with the solvent bottle; a third valve is arranged on the return pipeline, and a spiral tube mixing ring is arranged between the third valve and the tail end. The aerosol trapping device has the advantages of simple structure, easy operation, low cost, less solvent consumption, less waste discharge and high aerosol component content, and is favorable for improving the accuracy and the sensitivity of subsequent detection.

Description

Heating cigarette aerosol trapping device

Technical Field

The application relates to the technical field of flue gas analysis, in particular to a heating cigarette aerosol trapping device.

Background

Heated cigarettes (HTPs) typically include a smoking set and a cartridge, which is a Tobacco product in which a core of the cartridge is Heated by a heating source provided by the smoking set to produce an inhalable aerosol. Compared with other novel tobacco products, the heating cigarette is closer to the traditional cigarette in the aspects of physiology, psychology and smoking mode, and the product form is rich and diverse, thus being popular with consumers.

At present, the research on heating cigarettes is still in the initial stage, and the smoke analysis is an important technical means for the research and development and quality control of the heating cigarettes. The method for trapping the smoke of the heated cigarette generally adopts a smoke suction machine, and traps particulate matters in the mainstream smoke of the cigarette through a Cambridge filter disc, and a solvent absorbs gas-phase matters in the mainstream smoke. However, unlike the mainstream smoke generated by traditional cigarettes under high-temperature pyrolysis, the heated cigarettes are formed by heating core materials to atomize by means of heat sources to form mainstream smoke aerosol, almost no sidestream smoke is generated, the smoke release principle is greatly different from that of the traditional cigarettes, the content of tar in the mainstream smoke is extremely low, the aerosol mainly comprises an atomizing agent, water, nicotine, flavor components and a small amount of potential harmful substances, and the content of non-volatile components is far lower than that of the traditional cigarettes. Therefore, the existing smoke trapping method is not suitable for heating cigarettes, and often causes the problem of incomplete smoke component trapping; and the equipment cost adopted by the existing smoke analysis method is higher, which limits the research of the aerosol forming mechanism of the heated cigarette.

SUMMERY OF THE UTILITY MODEL

To solve or partially solve the problems in the related art, the present application provides a heated cigarette aerosol trapping device.

The application provides a heating cigarette aerosol entrapment device, it includes: the aerosol generating mechanism, the aerosol collecting mechanism and the gas-liquid mixing mechanism are arranged in the aerosol collecting mechanism; wherein the content of the first and second substances,

the aerosol generating mechanism comprises: smoking articles and cartridges;

the aerosol trapping mechanism comprises: an air inlet pipeline and an injector; the small hole of the syringe of the injector is communicated with the air inlet pipeline; the head end of the air inlet pipeline is connected with a filter tip of the cigarette bullet, and the tail end of the air inlet pipeline is connected with the gas-liquid mixing mechanism; a first valve is arranged between the head end of the air inlet pipeline and the injector, and a second valve is arranged between the tail end of the air inlet pipeline and the injector;

the gas-liquid mixing mechanism includes: the device comprises a mixing cavity, an atomizer, a liquid inlet pipeline, a peristaltic pump, a return pipeline and a solvent bottle; the tail end of the air inlet pipeline is communicated with the mixing cavity; the head end of the liquid inlet pipeline extends into the top of the mixing cavity and is in sealed connection with the mixing cavity; the tail end of the liquid inlet pipeline is connected with a solvent bottle; the peristaltic pump is arranged on the liquid inlet pipeline; an atomizing nozzle of the atomizer is arranged at the head end of the liquid inlet pipeline; the head end of the return pipeline is communicated with the bottom of the mixing cavity, and the tail end of the return pipeline is connected with the solvent bottle; and a third valve is arranged on the return pipeline, and a spiral pipe mixing ring is arranged between the third valve and the tail end.

Furthermore, the aerosol trapping mechanism further comprises a pneumatic connector, wherein the pneumatic connector is of a two-end opening and closing type, one end of the pneumatic connector is connected with the filter tip of the cigarette cartridge in a sealing mode through a sealing ring, and the other end of the pneumatic connector is connected with the head end of the air inlet pipeline in a sealing mode through the sealing ring.

Further, the air inlet pipeline comprises a first air inlet pipeline, a tee joint and a second air inlet pipeline which are connected in sequence; the head end of the first air inlet pipeline is connected with the other end of the pneumatic connector in a sealing mode through a sealing ring, the tail end of the first air inlet pipeline is connected with a first port of the tee joint, and a first valve is arranged on the first air inlet pipe; the head end of the second air inlet pipeline is connected with a second port of the tee joint, the tail end of the second air inlet pipeline is communicated with the mixing cavity, and a second valve is arranged on the second air inlet pipeline; and a third port of the tee joint is connected with a small hole of a needle cylinder of the injector.

Furthermore, the tail end of the air inlet pipeline extends into the mixing cavity from the bottom of the mixing cavity, and the tail end of the air inlet pipeline is provided with a bending section.

Further, the bending angle of the bending section is 90-120 degrees.

Further, the second valve is arranged at a position of the air inlet pipeline close to the bottom of the mixing cavity.

Further, a solvent for absorbing the aerosol is filled in the solvent bottle, and the solvent is one or a mixture of any more of methanol, ethanol, ethyl acetate, acetone, dichloromethane, n-hexane or cyclohexane.

Furthermore, a bottle cap is arranged at the top of the solvent bottle, and the tail end of the liquid inlet pipeline and the tail end of the return pipeline penetrate through the bottle cap and extend into the solvent bottle.

Furthermore, an exhaust guide pipe is arranged on the bottle cap, one end of the exhaust guide pipe penetrates through the bottle cap and extends into the solvent bottle, and the other end of the exhaust guide pipe is communicated with the outside atmosphere.

Further, the aerosol generating mechanism further comprises a mounting frame, and the smoking set is fixed on the mounting frame.

The embodiment of the utility model provides a heating cigarette aerosol entrapment device can include following beneficial effect:

1. the device is provided with the syringe on the air inlet pipeline, makes air inlet pipeline internal gas pressure change through the suction, and then realizes the automatic collection and the transport of aerosol. The injector is provided with scales, so that the quantitative trapping of the aerosol can be realized; and compared with a smoking machine, the injector has lower cost, which is beneficial to reducing the equipment cost of the whole device.

2. In the gas-liquid mixing mechanism of the device, on one hand, the solvent in the absorption bottle is conveyed to the top of the mixing cavity through the liquid inlet pipeline and the peristaltic pump arranged on the liquid inlet pipeline, the atomized liquid drop solvent is formed through the atomizing nozzle of the atomizer and then is mixed with the aerosol entering the mixing cavity, and as the specific surface area of the liquid drop is large, the contact area of the liquid drop and the aerosol can be increased, and the liquid drop flows down from the top of the mixing cavity, the contact time of the liquid drop and the aerosol can be prolonged, and the absorption rate of the solvent to the aerosol is improved. On the other hand, the mixed liquid in the mixing cavity enters a return pipeline at the bottom, is further dissolved by the spiral tube mixing ring and then flows back into the solvent bottle, the feed liquid in the solvent bottle is conveyed into the mixing cavity through the liquid inlet pipeline and the peristaltic pump, is mixed with the aerosol again and then flows back into the solvent bottle through the return pipeline, and the circulation conveying of the feed liquid and the enrichment of the aerosol components are realized through the repetition. Therefore, the dissolution rate of the aerosol can be improved, so that the components of the trapped heated cigarette are more complete, and the subsequent detection accuracy is improved; the content of aerosol components in the solvent in unit volume can be improved, the dosage of the solvent is reduced, and the sensitivity of subsequent detection is improved.

3. The device can also realize the mouth-to-mouth suction and continuous suction in a standard suction mode or a deep suction mode through the adjustment of the volume of the syringe needle cylinder, so as to realize the trapping and enrichment of smoke aerosol at a certain section in the suction process, facilitate the scientific research requirement and deeply research the composition and the release rule of the heated cigarette aerosol. In addition, the device is also suitable for trapping the aerosol of the mainstream smoke of the traditional cigarette.

To sum up, the utility model provides a heating cigarette aerosol entrapment device has simple structure and easily operates, with low costs, and the solvent quantity is few, the waste discharge is few, the advantage that aerosol composition content is high, is favorable to improving the precision and the sensitivity of follow-up detection.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

FIG. 1 is a schematic structural diagram of a heated cigarette aerosol trapping device provided by an embodiment of the present application;

FIG. 2 is a GC/MS total ion flow diagram of the heated cigarette smoke aerosol of example 1.

Description of the reference numerals

11-smoking set

12-cartridge

21-air inlet pipe

211-first valve

212-second valve

213-first air intake line

214-tee

215-second intake line

216-bend section

22-Syringe

23-pneumatic joint

31-mixing chamber

32-atomizing nozzle

33-liquid inlet pipeline

34-peristaltic pump

35-return line

351-third valve

352-spiral tube mixing ring

36-solvent bottle

361-bottle cap

362-exhaust conduit

Detailed Description

Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are illustrated in the accompanying drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The embodiment of the application provides a heating cigarette aerosol trapping device, can reduce equipment cost, improves the precision and the sensitivity of follow-up detection. The application the head end direction be the direction of smoking set and the cigarette bullet that is close to the heating cigarette, relative direction then is the tail end.

The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings. Referring to fig. 1, a heated cigarette aerosol trapping device according to an embodiment of the present invention is shown, which includes: the aerosol generating mechanism, the aerosol collecting mechanism and the gas-liquid mixing mechanism are arranged in the aerosol collecting mechanism; wherein, the first and the second end of the pipe are connected with each other,

the aerosol generating mechanism comprises: a smoking set 11 and a cartridge 12;

the aerosol trapping mechanism comprises: an air intake line 21 and an injector 22; the small hole of the syringe of the injector 22 is communicated with the air inlet pipeline 21; the head end of the air inlet pipeline 21 is connected with a filter tip of the cigarette cartridge 12, and the tail end of the air inlet pipeline is connected with the gas-liquid mixing mechanism; a first valve 211 is arranged between the head end of the air inlet pipeline 21 and the injector 22, and a second valve 212 is arranged between the tail end of the air inlet pipeline and the injector 22;

the gas-liquid mixing mechanism includes: a mixing chamber 31, an atomizer, a liquid inlet pipeline 33, a peristaltic pump 34, a return pipeline 35 and a solvent bottle 36; the tail end of the air inlet pipeline 21 is communicated with the mixing cavity 31; the head end of the liquid inlet pipeline 33 extends into the top of the mixing cavity 31 and is connected with the mixing cavity 31 in a sealing way; the tail end of the liquid inlet pipeline 33 is connected with a solvent bottle 36; the peristaltic pump 34 is arranged on the liquid inlet pipeline 33; the atomizing nozzle 32 of the atomizer is arranged at the head end of the liquid inlet pipeline 33; the head end of the return pipeline 35 is communicated with the bottom of the mixing cavity 31, and the tail end of the return pipeline is connected with the solvent bottle 36; the return line 35 is provided with a third valve 351, and a spiral tube mixing ring 352 is arranged between the third valve 351 and the tail end.

The above-mentioned heating cigarette aerosol trapping device that this embodiment provided comprises aerosol production mechanism, aerosol trapping mechanism and gas-liquid mixing mechanism, and aerosol production mechanism is used for producing the aerosol flue gas of heating the cigarette, and aerosol trapping mechanism then is used for collecting the flue gas aerosol that the heating cigarette produced, and gas-liquid mixing mechanism is then carries out abundant mixture with the absorption solvent with the flue gas aerosol who collects to realize the entrapment of aerosol composition. Specifically, the method comprises the following steps:

the aerosol generating mechanism includes a smoking set 11 and a cartridge 12, the smoking set 11 is used for heating the core material of the cartridge 12, and the specific structure thereof may be the same as that of the existing cigarette heating structure, and therefore, the detailed description thereof is omitted. In order to prevent the smoking set 11 and the cartridge 12 from moving during the smoke trapping process and ensure the firmness of the cigarette heating position, the aerosol generating mechanism preferably further comprises a mounting frame, and the smoking set 11 is fixed on the mounting frame.

The aerosol trapping mechanism is connected with the aerosol generating mechanism and comprises an air inlet pipeline 21 and an injector 22, and the injector 22 is used for enabling the air pressure in the air inlet pipeline 21 to change through suction so as to realize automatic collection and transportation of the aerosol. The injector 22 is provided with scales, so that the quantitative collection of the aerosol can be realized; and the lower cost of the injector 22 relative to a smoking machine helps to reduce the equipment cost of the overall device. Preferably, the syringe 22 is an air-tight syringe, with a minimum scale precision of 0.1mL and a gauge of no less than 35mL.

The head end of the air inlet pipeline 21 is connected with the filter tip of the cigarette cartridge 12, and the tail end of the air inlet pipeline is connected with the gas-liquid mixing mechanism, specifically, the mixing cavity 31 of the gas-liquid mixing mechanism. The intake pipe 21 is provided with a first valve 211 and a second valve 212 for controlling the on/off of the pipe. Specifically, the method comprises the following steps: when the aerosol needs to be collected in the injector 22, the first valve 211 is opened, the second valve 212 is closed, the injector 22 is pulled, and the aerosol generated by the aerosol trapping mechanism is collected in the injector 22 under the action of negative pressure; when the collected aerosol needs to be delivered to the gas-liquid mixing mechanism, the second valve 212 is opened, the injector 22 is pushed and pulled, and the aerosol in the injector 22 is pushed into the mixing mechanism.

Referring to fig. 1, as a preferred embodiment of the present invention, the aerosol trapping mechanism further includes a pneumatic connector 23, wherein the pneumatic connector 23 has two open ends, one end of the pneumatic connector 23 is connected to the filter of the cartridge 12 in a sealing manner by a sealing ring, and the other end of the pneumatic connector 23 is connected to the head end of the air inlet pipeline 21 in a sealing manner by a sealing ring. That is, the air inlet pipeline 21 is connected with the filter tip of the cigarette cartridge 12 through the pneumatic connector 23, so that the airtightness of the aerosol trapping mechanism is improved, and the aerosol is effectively prevented from leaking.

Further, in order to facilitate connection between the intake pipe 21 and other components and facilitate cleaning of the intake pipe 21, the intake pipe 21 is preferably of a split structure, and specifically, the intake pipe 21 includes a first intake pipe 213, a tee joint 214, and a second intake pipe 215 which are connected in sequence; the head end of the first air inlet pipeline 213 is connected with the other end of the pneumatic connector 23 in a sealing way through a sealing ring, the tail end of the first air inlet pipeline is connected with a first port of a tee joint 214, and a first valve 211 is arranged on the first air inlet pipeline; the head end of the second air inlet pipeline 215 is connected with the second port of the tee joint 214, the tail end of the second air inlet pipeline 215 is communicated with the mixing cavity 31, and a second valve 212 is arranged on the second air inlet pipeline 215; the third port of the tee 214 is connected to the syringe orifice of the syringe 22.

The gas-liquid mixing mechanism is provided with a solvent bottle 36, the solvent bottle 36 is filled with a solvent for absorbing aerosol, and the solvent is preferably one or a mixture of any of methanol, ethanol, ethyl acetate, acetone, dichloromethane, n-hexane or cyclohexane. The solvent in the solvent bottle 36 is conveyed to the top of the mixing chamber 31 through the liquid inlet pipeline 33 and the peristaltic pump 34 arranged thereon, the atomized droplet solvent is formed through the atomizing nozzle 32 of the atomizer and then is mixed with the aerosol entering the mixing chamber 31, in the process, the solvent forms tiny liquid through the atomizer and then is sprayed from the top of the mixing chamber 31 to the bottom, the contact area of the droplet with the aerosol can be increased due to the large specific surface area of the droplet, and the droplet flows down from the top of the mixing chamber 31, so the contact time of the droplet and the aerosol can be prolonged, and the absorption rate of the solvent to the aerosol is improved. It will be understood by those skilled in the art that the end of the feed line 33 is below the solvent level of the solvent bottle 36 to perform its feeding function. Furthermore, in order to reduce the solvent evaporation, a bottle cap 361 is disposed on the top of the solvent bottle 36, and the tail end of the liquid inlet pipe 33 and the tail end of the return pipe 35 both penetrate through the bottle cap 361 and extend into the solvent bottle 36. More preferably, in order to prevent the excessive air pressure in the solvent bottle 36 during the trapping process, the cap 361 is provided with an exhaust duct 362, one end of the exhaust duct 362 extends into the solvent bottle 36 through the cap 361, and the other end is communicated with the outside atmosphere, thereby balancing the pressure inside and outside the solvent bottle 36 through the exhaust duct 362. One skilled in the art will appreciate that one end of the vent conduit 362 should be above the solvent level of the solvent bottle 36.

In order to further prolong the contact time between the aerosol and the solvent droplets, referring to fig. 1, the tail end of the air inlet pipe 21 extends into the mixing chamber 31 from the bottom of the mixing chamber 31, so as to lengthen the vertical distance between the atomized solvent inlet and the aerosol inlet as much as possible, and at the same time, to prevent the gas-liquid mixture from flowing back to the air inlet pipe 21, the tail end of the air inlet pipe 21 is provided with a bent section 216. The bending angle of the bending section 216 is preferably 90 to 120 °. The height of the end of the bend section 216 within the mixing chamber 31 can be set by one skilled in the art based on the maximum level of the mixing fluid within the mixing chamber 31. Preferably, the second valve 212 is disposed in the intake line 21 near the bottom of the mixing chamber 31.

The mixed liquid in the mixing cavity 31 passes through the return pipeline 35 at the bottom, is further dissolved by the spiral pipe mixing ring 352 and then flows back into the solvent bottle 36, the feed liquid in the solvent bottle 36 is conveyed into the mixing cavity 31 through the liquid inlet pipeline 33 and the peristaltic pump 34 and is mixed with the aerosol again, and then the feed liquid flows back into the solvent bottle 36 through the return pipeline 35, and the steps are repeated, so that the cyclic conveying of the feed liquid and the enrichment of the aerosol components are realized. The spiral tube mixing ring 352 is a mixing tube made of glass, and is commonly used in a continuous flow analyzer to ensure mixing of two streams of fluid, and this embodiment is specifically used to ensure mixing of aerosol and solvent, and the aerosol and the solvent move up and down in the process of passing through the spiral tube mixing ring 352 to accelerate mixing, so that the aerosol components are fully mixed by the solvent, and effective trapping of the aerosol components is ensured. Those skilled in the art can adjust the thickness, length and number of turns of the helical mixing ring 352 according to the amount of aerosol and solvent used, etc., to ensure that the flue gas and the absorption solvent are mixed sufficiently.

The utility model provides a heating cigarette aerosol entrapment device's working process as follows:

adjusting the bottom end of the handle of the injector 22 to be at zero scale, closing the second valve 212 and the third valve 351, opening the first valve 211, pressing a heating button of the smoking set 11, preheating, and pulling the piston of the injector 22 to simulate pumping action; after the pumping is finished, the first valve 211 is closed rapidly, the second valve 212 and the peristaltic pump 34 are opened, the solvent is sprayed into the mixing cavity 31 in an atomized mode through the liquid inlet pipeline 33 and the atomizing nozzle 32 under the action of the peristaltic pump 34, the solvent is uniformly scattered in the mixing cavity 31, meanwhile, the handle of the injector 22 is pushed, the trapped heated cigarette aerosol enters the mixing cavity 31 through the second gas inlet pipeline 215, the second valve 212 is closed immediately, and the absorption solvent and the aerosol are dissolved and mixed in the mixing cavity 31; then the peristaltic pump 34 is closed, the third valve 351 is opened, the mixed liquid in the mixing chamber 31 is further mixed by the spiral tube mixing ring 352 and then enters the solvent bottle 36 through the return pipeline 35, and the first smoke suction and trapping are completed; the third valve 351 is closed, the first valve 211 is opened, the plunger of the syringe 22 is pulled, and the second suction is started, and the suction is repeated with the first suction, so as to finally obtain the solvent rich in the aerosol component.

Therefore, the heating cigarette aerosol trapping device provided by the embodiment of the invention has the following advantages:

1. the device is provided with an injector 22 on an air inlet pipeline 21, so that the air pressure in the air inlet pipeline 21 is changed through suction, and further, the automatic collection and conveying of aerosol are realized. The injector 22 is provided with scales, so that the quantitative collection of the aerosol can be realized; and the lower cost of the injector 22 relative to a smoking machine helps to reduce the equipment cost of the overall device.

2. In the gas-liquid mixing mechanism of the device, on one hand, the solvent in the absorption bottle is conveyed to the top of the mixing cavity 31 through the liquid inlet pipeline 33 and the peristaltic pump 34 arranged on the liquid inlet pipeline 33, the atomized liquid drop solvent is formed through the atomizing nozzle 32 of the atomizer and then is mixed with the aerosol entering the mixing cavity 31, the contact area of the liquid drop and the aerosol can be increased due to the large specific surface area of the liquid drop, and the liquid drop flows down from the top of the mixing cavity 31, so the contact time of the liquid drop and the aerosol can be prolonged, and the absorption rate of the solvent to the aerosol is improved. On the other hand, the mixed liquid in the mixing chamber 31 enters the return line 35 at the bottom, is further dissolved by the spiral tube mixing ring 352 and then flows back into the solvent bottle 36, the feed liquid in the solvent bottle 36 is conveyed into the mixing chamber 31 through the liquid inlet line 33 and the peristaltic pump 34 and is mixed with the aerosol again, and then flows back into the solvent bottle 36 through the return line 35, and the steps are repeated, so that the circulation conveying of the feed liquid and the enrichment of the aerosol components are realized. Therefore, the dissolution rate of the aerosol can be improved, the components of the trapped heated cigarette are more complete, and the subsequent detection accuracy is improved; the content of aerosol components in the solvent in unit volume can be improved, the dosage of the solvent is reduced, and the sensitivity of subsequent detection is improved.

3. The device can also realize the mouth-to-mouth suction and continuous suction under a standard suction mode or a deep suction mode through the adjustment of the volume of the syringe needle cylinder, thereby realizing the trapping and enrichment of smoke aerosol at a certain section in the suction process, facilitating the scientific research needs and deeply researching the composition and the release rule of the heated cigarette aerosol. In addition, the device is also suitable for trapping the aerosol of the mainstream smoke of the traditional cigarette.

To sum up, the utility model provides a heating cigarette aerosol entrapment device has simple structure and easily operates, with low costs, and the solvent quantity is few, the waste discharge is few, the advantage that aerosol composition content is high, is favorable to improving the precision and the sensitivity of follow-up detection.

The technical solution of the present invention is further illustrated by the following specific examples:

example 1

The heated cigarette aerosol trapping device shown in fig. 1 is adopted to carry out the following operations:

the smoking set 11 is fixed on a mounting frame (not shown in the figure), the cartridge 12 is inserted, the filter tip of the cartridge 12 is connected with the pneumatic connector 23 through a sealing ring, and the other end of the pneumatic connector 23 is connected with the air inlet pipeline 21 through the sealing ring; adjusting the bottom end of the handle of the injector 22 to be at zero scale, closing the second valve 212 and the third valve 351, opening the first valve 211, pressing a heating button (heating temperature is 300 ℃) of the smoking set 11, preheating for 30s, pulling the piston of the injector 22 to simulate pumping action, wherein the pumping volume is 35mL, and the pumping time is 2s; after the pumping is finished, the first valve 211 is closed rapidly, the second valve 212 and the peristaltic pump 34 are opened, the solvent (methanol) is sprayed into the mixing cavity 31 in an atomized form through the liquid inlet pipeline 33 and the atomizing nozzle 32 under the action of the peristaltic pump 34 at the flow rate of 0.2mL/s, the solvent is uniformly scattered in the mixing cavity 31, meanwhile, the handle of the injector 22 is pushed, the trapped aerosol of the heated cigarette enters the mixing cavity 31 through the second air inlet pipeline 215 of the air inlet pipeline 21, the second valve 212 is closed immediately, and the absorption solvent and the aerosol are dissolved and mixed in the mixing cavity 31; after 60s, the peristaltic pump 34 is closed, the third valve 351 is opened, the mixed liquid in the mixing chamber 31 is further mixed by the section of spiral tube mixing ring 352 and then enters the solvent bottle 36 through the return pipeline 35, and the first smoke suction and trapping are completed; the third valve 351 is closed, the first valve 211 is opened, the piston of the injector 22 is pulled, and the second suction action is started, wherein the suction process is the same as that of the first suction action, 4 suction actions are carried out on each cartridge 12, and the interval between the two suction actions is 60s. This embodiment is in a standard pumping mode.

After the trapping is finished, measuring the liquid volume, taking out a proper amount of solution for GC/MS analysis, and taking out a GC/MS total ion flow diagram of the flue gas aerosol as shown in a figure 2, wherein the analysis result is listed in a table 1.

TABLE 1 heating cigarette Aerosol principal Components

As can be seen from Table 1: the main components in the aerosol of the heated cigarette are atomizing agent (propylene glycol and glycerol), nicotine, 3-hydroxypropane-1, 2-diacetic acid diester, neophytadiene, guaiacol, acetic acid, furfural, hydroxyacetone and the like and other volatile semi-volatile aroma components.

Example 2

Example 2 differs from example 1 in that example 2 had a puff volume of 55mL, two puffs were performed at 30s intervals, 7 puffs were taken per cartridge, and solvent was pumped into the mixing chamber through the liquid conduit and the atomizing nozzle at a flow rate of 0.5mL/s, with the other steps being the same as in example 1.

This embodiment belongs to a deep pumping mode, with a heating time of 230s.

Example 3

Example 3 differs from example 2 in that example 3 was heated at 250 ℃, for 360 seconds, with 30 seconds between puffs, and 12 puffs per cartridge, solvent was pumped into the mixing chamber through the liquid conduit and atomizing nozzle at a flow rate of 0.5mL/s, and the other steps were the same as example 2. This embodiment belongs to the deep pumping mode.

Example 4

Example 4 differs from example 1 in that the cartridge of example 4 was heated to 350 c and 1 puff per cartridge and solvent was pumped into the mixing chamber through the liquid conduit and the atomising nozzle at a rate of 0.6 ml/s for 60s, the other steps being the same as in example 1. This embodiment can be used to study the smoke composition of puff-by-puff, belonging to the standard smoking mode.

The foregoing description of the embodiments of the present application has been presented for purposes of illustration and description and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. A heated cigarette aerosol trapping device, comprising: the aerosol generating mechanism, the aerosol collecting mechanism and the gas-liquid mixing mechanism; wherein, the first and the second end of the pipe are connected with each other,

the aerosol generating mechanism comprises: smoking articles and cartridges;

the aerosol trapping mechanism comprises: an air inlet pipeline and an injector; the small hole of the syringe of the injector is communicated with the air inlet pipeline; the head end of the air inlet pipeline is connected with a filter tip of the cigarette cartridge, and the tail end of the air inlet pipeline is connected with the gas-liquid mixing mechanism; a first valve is arranged between the head end of the air inlet pipeline and the injector, and a second valve is arranged between the tail end of the air inlet pipeline and the injector;

the gas-liquid mixing mechanism includes: the device comprises a mixing cavity, an atomizer, a liquid inlet pipeline, a peristaltic pump, a return pipeline and a solvent bottle; the tail end of the air inlet pipeline is communicated with the mixing cavity; the head end of the liquid inlet pipeline extends into the top of the mixing cavity and is in sealed connection with the mixing cavity; the tail end of the liquid inlet pipeline is connected with a solvent bottle; the peristaltic pump is arranged on the liquid inlet pipeline; an atomizing nozzle of the atomizer is arranged at the head end of the liquid inlet pipeline; the head end of the return pipeline is communicated with the bottom of the mixing cavity, and the tail end of the return pipeline is connected with the solvent bottle; and a third valve is arranged on the return pipeline, and a spiral pipe mixing ring is arranged between the third valve and the tail end.

2. The heated cigarette aerosol trapping device of claim 1, wherein the aerosol trapping mechanism further comprises a pneumatic connector, the pneumatic connector is open-closed at two ends, one end of the pneumatic connector is connected with the filter tip of the cartridge in a sealing manner through a sealing ring, and the other end of the pneumatic connector is connected with the head end of the air inlet pipeline in a sealing manner through a sealing ring.

3. The heated cigarette aerosol trapping device of claim 2, wherein the air inlet conduit comprises a first air inlet conduit, a tee, and a second air inlet conduit connected in series; the head end of the first air inlet pipeline is connected with the other end of the pneumatic connector in a sealing mode through a sealing ring, the tail end of the first air inlet pipeline is connected with a first port of the tee joint, and a first valve is arranged on the first air inlet pipe; the head end of the second air inlet pipeline is connected with a second port of the tee joint, the tail end of the second air inlet pipeline is communicated with the mixing cavity, and a second valve is arranged on the second air inlet pipeline; and a third port of the tee joint is connected with a small hole of a needle cylinder of the injector.

4. The heated cigarette aerosol trapping device of claim 1, wherein the tail end of the air inlet conduit extends into the mixing chamber from the bottom of the mixing chamber, the tail end of the air inlet conduit being provided with a bend.

5. A heated cigarette aerosol trapping device according to claim 4 wherein the bend angle of the bend section is between 90 ° and 120 °.

6. The heated cigarette aerosol trapping device of claim 4, wherein the second valve is disposed in the air inlet line proximate to the bottom of the mixing chamber.

7. The heated cigarette aerosol trapping device of claim 1, wherein the solvent bottle contains a solvent for absorbing aerosol, and the solvent is one or a mixture of any of methanol, ethanol, ethyl acetate, acetone, dichloromethane, n-hexane, and cyclohexane.

8. The heated cigarette aerosol trapping device of claim 7, wherein a bottle cap is disposed on a top of the solvent bottle, and a tail end of the liquid inlet pipeline and a tail end of the return pipeline both extend into the solvent bottle through the bottle caps.

9. The heated cigarette aerosol trapping device of claim 8, wherein the bottle cap is provided with an exhaust conduit, one end of the exhaust conduit extends into the solvent bottle through the bottle cap, and the other end of the exhaust conduit is communicated with the outside atmosphere.

10. The heated cigarette aerosol trapping device of claim 1, wherein the aerosol generating mechanism further comprises a mounting bracket, the smoking article being secured to the mounting bracket.

Images