CN106680045B - Tobacco sample smoke release system and tobacco sample smoke aerosol collection method - Google Patents

Abstract

The invention provides a tobacco sample smoke release system and a tobacco sample smoke aerosol collection method. The tobacco sample smoke release system includes: a heating box and a sample tube assembly; the heating box is provided with a box installation hole; the sample tube assembly includes : The sample tube body; the sample tube body includes a straight tube and a side tube; one end of the straight tube is the first suction end, the other end of the straight tube is the sample loading end; one end of the side tube is the second suction end, and the side tube is the second suction end. The other end of the main tube is the venting end; the sample tube body is inserted into the heating box through the box installation hole, and the sample loading end of the straight tube and the venting end of the side tube are both in the heating box. The present invention uses a gas chromatograph oven as a heating source, which has the advantages of rapid temperature rise and fall, accurate temperature control, and convenient loading of sample tubes; the first suction of the sample tube body can directly capture flue gas, and the second suction end can capture To the flue gas after intense atomization at the conversion of the atomization connecting pipe and the atomization main pipe, the sample loading end is convenient for loading and cleaning of tobacco samples.

Description

Tobacco sample smoke release system and tobacco sample smoke aerosol collection method

technical field

The invention relates to the field of cigarette development, in particular to a tobacco sample smoke release system and a tobacco sample smoke aerosol collection method.

Background technique

In recent years, with people's attention to passive smoking, environmental tobacco smoke, the English name is Environment Tobacco Smoke, and the English abbreviation is ETS, which has become one of the main topics in the public debate on smoking and health issues. Environmental tobacco smoke is mainly composed of sidestream smoke released from burning cigarettes and residual mainstream smoke exhaled by smokers. Therefore, reducing sidestream smoke is one of the main ways to reduce environmental smoke. Generally speaking, the reduction of sidestream smoke refers to the reduction of visible sidestream smoke. The English name of visible sidestream smoke is Visible Sidestream Smoke, and the English abbreviation is VSS. The heat-not-burn cigarette can greatly reduce the release of VVS, and at the same time, the content of harmful substances in the smoke of the tobacco sample is more than 80% lower than that of the conventional cigarette.

New cigarettes, especially heat-not-burn cigarettes, use tobacco samples. In the heat-not-burn state, the smoke aerosol released provides the sensory enjoyment of traditional cigarettes, while the content of harmful substances in the smoke aerosol is greatly reduced. Heat-not-burn cigarettes provide consumers with physiological satisfaction, and the harm to consumers' health is reduced to the lowest point. In order to promote the development and development of heat-not-burn cigarettes, there is an urgent need for automated systems and experimental methods that can provide rapid and precise temperature control conditions and enable tobacco samples to release smoke aerosols in a heat-not-burn state.

Contents of the invention

In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a tobacco sample smoke release system and a tobacco sample smoke aerosol collection method for solving the above-mentioned problems in the prior art.

In order to solve the above technical problems, the present invention provides a smoke release system for tobacco samples, comprising: a heating box and at least one sample tube assembly; the heating box is provided with at least one box mounting hole for the sample tube assembly to be inserted into The sample tube assembly includes: a sample tube body; the sample tube body includes a straight tube and a side tube; one end of the straight tube is a first suction end, and the other end of the straight tube is a tobacco sample container; One end of the side tube is the second suction end, the other end of the side tube is the venting end connected with the straight tube, and the venting end of the side tube is close to the The sample loading end of the straight tube; the sample tube body loaded with tobacco samples is inserted into the heating box through the box installation hole, and the sample loading end of the straight tube and the ventilation end of the side tube are both in the In the heating box, one of the first suction end of the straight pipe and the second suction end of the side pipe is connected to an airflow control device.

In the smoke release system for tobacco samples of the present invention, the sample tube assembly is inserted into the heating box, so that the sample tube assembly loaded with tobacco samples can be heated evenly in the heating box; One of the first suction end of the tube and the second suction end of the side tube is connected to an air flow control device. After the heating box is opened, the tobacco sample in the sample tube body is heated and releases an aerosol, and the air flow control device The resulting airflow drives the aerosol flow in the sample tube assembly, allowing the trap to collect the released aerosol.

Preferably, the heating box is a gas chromatography oven. As a heating box, the gas chromatograph oven has the advantages of rapid temperature rise and fall and accurate temperature control. The box installation holes provided on the gas chromatograph oven facilitate the loading of sample tube components on the gas chromatograph oven.

Preferably, the sample tube body is made of transparent material; the side tube includes: an atomization main pipe and an atomization communication pipe, one end of the atomization main pipe communicates with one end of the atomization communication pipe, and the atomization The other end of the main pipe is the second suction end of the side pipe, and the other end of the atomization communication pipe is the ventilation end of the side pipe; the inner diameter of the atomization main pipe is larger than that of the atomization communication pipe inner diameter.

The tobacco sample is loaded into the direct suction pipe through the sample loading end of the straight pipe; the heating box heats the tobacco sample, and the tobacco sample releases aerosol; when there is no need to observe the atomization effect, the first suction pipe of the straight pipe A trap is connected to the end, and an airflow control device is arranged on the first suction end of the straight pipe or the second suction end of the side pipe, and the airflow generated by the airflow control device drives the aerosol in the sample tube assembly to the second suction end of the straight pipe. One suction end flows; when it is necessary to observe the atomization effect, connect the trap to the second suction end of the side pipe, and set it on the first suction end of the straight pipe or the second suction end of the side pipe Airflow control device, the airflow generated by the airflow control device drives the aerosol in the sample tube assembly to flow to the second suction end of the side tube; since the inner diameter of the atomization main pipe is larger than the inner diameter of the atomization connecting pipe, the atomization main pipe The connection with the atomization connecting pipe will form an atomization effect. The staff can observe the atomization effect through the sample tube body made of transparent material, observe the atomization effect in the suction state, and be able to determine the atomization when the specific number of mouths is sucked At this time, the tobacco sample has been basically smoked completely. The sample tube body made of transparent material is also convenient for the staff to observe the filling state of the tobacco sample.

Preferably, at least two thorns are provided on the inner wall of the straight pipe. Used to limit where the tobacco sample is loaded into the straight tube.

Further, the sample tube assembly also includes a pad, when the tobacco sample is loaded into the straight tube, one end of the tobacco sample leans against the thorn, and the pad is loaded into the straight tube , the mat compresses the other end of the tobacco sample. The pad body is used to seal the sample loading end, and the pad body enables the tobacco sample to be stably arranged in the straight tube.

Further, the sample tube body also includes two quartz wools, one of which is arranged between the tobacco sample and the stab, and the other quartz wool is arranged between the tobacco sample and the between pads. Quartz wool is arranged at both ends of the tobacco sample, which can prevent the tobacco sample from being scattered in the straight pipe.

Furthermore, the straight pipe is provided with a narrowing part of the tube body, the narrowing part of the tube body is located between the thorn and the first suction end, and the inner diameter of the narrowing part of the tube body is less than The inner diameter of the straight pipe. The narrowing part of the tube body enables the observation of the atomization effect of the tobacco sample on the straight tube.

Preferably, the airflow control device is an airflow input device or a smoking machine. When the air flow control device is an air flow input device, the air flow input device blows the sample tube assembly to make the aerosol in the sample tube assembly flow; when the air flow control device is a smoking machine, the smoking machine sucks the sample tube assembly to flow the aerosol in the sample tube assembly.

Further, the airflow input device is a moisture delivery system, the moisture delivery system includes a gas supply device and a humidification airtight container communicated with the air supply device, the humidification airtight container is filled with water, a guide One end of the trachea communicates with the output end of the air supply device, the other end of the air guide tube is inserted into the water contained in the humidification airtight container, one end of a moisture conduit communicates with the humidification airtight container, and the moisture The other end of the conduit communicates with the first suction end of the straight pipe or the second suction end of the side pipe. The dry gas enters the water contained in the humidification airtight container through the air duct, and the dry gas combines with water to form moisture with humidity and enters the sample tube body, so that the humidity of the gas passed into the sample tube body meets the requirements of the experiment.

Further, the air supply device includes an air supply element connected in sequence and an airflow control member communicated with the output end of the air supply element, and the output end of the airflow control element is connected to the air duct.

The present invention also relates to a tobacco sample smoke aerosol collection method using the tobacco sample smoke release system. When the airflow control device is a smoking machine, the sample tube body containing the tobacco sample is put into a heating box , one of the first suction end of the straight pipe and the second suction end of the side pipe communicates with the air, and the other connects the trap and the smoking machine in turn, the heating box is turned on, and the The tobacco sample is heated to release aerosol, the smoking machine performs suction, air enters the sample tube body, and the trap collects the released aerosol. The heating box can heat the tobacco sample in the sample tube body evenly, so that the tobacco sample can continuously and stably release aerosol; the first suction end of the straight tube communicates with one of the second suction ends of the side tube Air, the other is connected to the trap and the smoking machine in turn to meet different experimental needs.

The present invention also relates to a tobacco sample smoke aerosol collection method using the tobacco sample smoke release system. When the airflow control device is an airflow input device, the sample tube body containing the tobacco sample is put into the box, one of the first suction end of the straight pipe and the second suction end of the side pipe is connected to the air flow input device, and the other is connected to the trap in turn, the heating box is opened, and the sample tube body is The tobacco sample releases aerosol after being heated, the airflow in the airflow input device enters the sample tube body, and the trap collects the released aerosol.

The invention uses a gas chromatographic oven as a heating source, and has the advantages of rapid temperature rise and fall, accurate temperature control, and convenient loading of sample tubes. The first suction end, the sample loading end and the second suction end of the sample tube body of the present invention form a design of three mouths, and the first suction end can directly collect smoke, which has the advantage of large collection capacity ; The second suction end can capture the smoke after intense atomization at the transition between the atomization connecting pipe and the atomization main pipe; the sample loading end is convenient for loading and cleaning of tobacco samples. The high-temperature pad body is sealed, the first suction end or the second suction end is used for suction and capture, and the other one is used to replenish cold air. The stabs are used to fix the quartz wool to prevent the tobacco sample from sliding in the sample tube during the suction process. At the same time, it can fix the filling height of the tobacco sample and improve the parallelism of the experimental results. In the tobacco sample smoke aerosol collection method of the present invention, the airflow generated by the airflow control device drives the aerosol flow in the sample tube assembly, which is in line with conventional smoking, and the obtained experimental results have universal recognition. The invention can use dry air as the gas source, carry out the aerosol after steady flow and humidification, is not affected by the external environment, and has the characteristics of high stability. The tobacco sample smoke aerosol collection method provided by the invention is easy to operate and has high experimental efficiency.

Description of drawings

Fig. 1 is a schematic diagram of the structure when the first suction end of the straight pipe is connected to the trap in the smoke release system for tobacco samples in Example 1.

Fig. 2 is a schematic diagram of the structure when the second suction end of the side pipe is connected to the trap in the tobacco sample smoke release system of Example 1.

FIG. 3 is a schematic structural view of the sample tube assembly in the tobacco sample smoke release system of Example 1. FIG.

FIG. 4 is a schematic structural view of the sample tube body of the sample tube assembly in the tobacco sample smoke release system of Example 1. FIG.

Fig. 5 is a schematic diagram showing the structure of the tobacco sample smoke release system in Example 2, when the first suction end of the straight pipe is connected to the trap, and the second suction end of the side pipe is connected to the moisture delivery system.

Fig. 6 is a schematic diagram showing the structure of the tobacco sample smoke release system in Example 2, when the second suction end of the side pipe is connected to the trap, and the first suction end of the straight pipe is connected to the moisture delivery system.

Fig. 7 shows the temperature change curve of the inner wall of the sample tube body after the sample tube body in Example 3 is placed in a heating box with a furnace temperature setting value of 300°C.

Figure 8 shows the temperature change of the tobacco sample inside the straight tube after the sample tube assembly of Example 4 is in the smoking state of the smoking machine, after the tobacco sample in the sample tube body is placed in a heating box with a furnace temperature setting value of 300°C curve.

Figure 9 shows that the second suction end of the side tube of the sample tube assembly of Example 5 is fed with continuous humidified air, after the tobacco sample in the sample tube body is placed in a heating box with a furnace temperature setting value of 300°C , the temperature variation curve of the tobacco sample inside the straight tube.

Fig. 10 shows the curves of the nicotine release per unit mass of the dry basis tobacco sample at different temperatures of the sample tube assembly of Example 6 in the smoking state of the smoking machine.

Figure 11 shows that the sample tube assembly of Example 7 is in the smoking state of the smoking machine, and when the second suction end of the side tube is connected to the moisture delivery system, the tobacco sample is at different temperatures, the unit mass of the dry base tobacco sample Nicotine release curve.

Explanation of reference numbers

100 heating box

110 Cabinet mounting holes

200 Sample Tube Body

210 straight tube

211 First suction end

212 Loading side

213 Tube Narrowing

220 side tube

221 Second suction port

222 Vent end

223 Atomization supervisor

224 Atomization connecting pipe

2241 Outlet tube

2242 The first connecting pipe

2243 Second connecting pipe

300 stabs

400 Pad body

500 tobacco samples

600 Quartz Wool

700 Moisture Delivery System

710 Air supply unit

711 air supply element

712 Air Control

713 pressure reducing valve

720 humidification airtight container

730 Airway

740 Moisture Conduit

810 trap

Detailed ways

The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

Please refer to attached picture. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable scope of the invention and the change or adjustment of its relative relationship shall also be regarded as the practicable scope of the present invention without any substantial change in the technical content.

Example 1

As shown in Figures 1 to 4, the tobacco sample smoke release system of this embodiment includes: a heating box 100 and at least one sample tube assembly;

The heating box 100 is provided with at least one box installation hole 110 for inserting the sample tube assembly; the number of box installation holes 110 corresponds to the number of the sample tube assembly;

The sample tube assembly includes: a sample tube body 200; the sample tube body 200 includes a straight tube 210 and a side tube 220; one end of the straight tube 210 is the first suction end 211, and the other end of the straight tube 210 is for loading the tobacco sample 500 One end of the side pipe 220 is the second suction end 221, the other end of the side pipe 220 is the vent end 222 connected with the straight pipe 210, and the vent end 222 of the side pipe 220 is close to the straight pipe The sample loading end 212 of 210; the sample tube body 200 of loading tobacco sample 500 is inserted in the heating box 100 through box mounting hole 110, and the sample loading end 212 of straight tube 210, the ventilation end 222 of side pipe 220 and tobacco sample 500 are all in the heating box 100, and one of the first suction end 211 of the straight pipe 210 and the second suction end 221 of the side pipe 220 is connected to the airflow control device.

In the tobacco sample smoke release system of the present invention, the sample tube assembly is inserted into the heating box 100, so that the sample tube assembly loaded with the tobacco sample 500 can be evenly heated in the heating box 100; since the straight tube 210 and the side tube 220 are Connected, one of the first suction end 211 of the straight pipe 210 and the second suction end 221 of the side pipe 220 is connected to the air flow control device. After the heating box is opened, the tobacco sample in the sample tube body 200 The aerosol is released after the 500 is heated, and the airflow generated by the airflow control device drives the aerosol in the sample tube assembly 200 to flow, so that the trap 810 can collect the released aerosol.

The heating box 100 is a gas chromatography oven oven. As the heating box 100, the gas chromatograph oven has the advantages of rapid temperature rise and fall and accurate temperature control. The box installation hole 110 provided on the gas chromatograph oven facilitates loading of the sample tube assembly on the gas chromatograph oven. The setting range of the gas chromatograph oven is 25°C to 450°C. After the temperature of the gas chromatograph oven is stable, the temperature range is ±0.1°C, and the number of installation holes 110 in the box is 1 to 5.

The sample tube body 200 is made of transparent material; the side tube 220 includes: an atomization main pipe 223 and an atomization communication pipe 224, one end of the atomization main pipe 223 communicates with one end of the atomization communication pipe 224, and the other end of the atomization main pipe 223 is a side The second suction end 221 of the side pipe 220, the other end of the atomization communication pipe 224 is the ventilation end 222 of the side pipe 220;

The tobacco sample 500 is loaded into the straight pipe 210 through the sample loading end 212 of the straight pipe 210; the heating box 100 heats the tobacco sample 500, and the tobacco sample 500 releases an aerosol; The catcher 810 is connected to the first suction end 211 of the 210, the first suction end 211 of the straight pipe 210 or the second suction end 221 of the side pipe 220 is provided with an air flow control device, and the air flow generated by the air flow control device drives The aerosol in the sample tube assembly 200 flows to the first suction end 211 of the straight tube 210; when it is necessary to observe the atomization effect, a trap is connected to the second suction end 221 of the side tube 220, and the straight tube 210 An air flow control device is arranged on the first suction end 211 of the side tube 220 or the second suction end 221 of the side tube 220, and the air flow generated by the air flow control device drives the aerosol in the sample tube assembly 200 to the second suction of the side tube 220 end 221 flow; because the inner diameter of the atomization main pipe 223 is greater than the inner diameter of the atomization connecting pipe 224, so the connection between the atomization main pipe 223 and the atomization connecting pipe 224 will form an atomization effect, and the staff will pass through the sample tube body 200 made of transparent material. The atomization effect can be observed, and the atomization effect can be observed in the suction state, and it can be confirmed that the atomization amount is significantly reduced when the specific number of puffs is drawn, which means that the tobacco sample has been basically sucked completely. The sample tube body 200 made of transparent material is also convenient for the staff to observe the filling state of the tobacco sample 500 .

The atomization connecting pipe 224 includes an outlet pipe 2241, a first connecting pipe 2242 and a second connecting pipe 2243 which are connected in sequence and have the same inner diameter; the outlet pipe 2241 communicates with the straight pipe 210; the second connecting pipe 2243 communicates with the atomizing main pipe 223, and A connecting pipe 2242 is parallel to the straight pipe 210, the central axis of the first connecting pipe 2242 is perpendicular to the central axis of the straight pipe 210, and the central axis of the second connecting pipe 2243 is perpendicular to the central axis of the direct suction pipe. This structure enables the sample tube assembly to have a simplified structure, so that when the sample tube assembly is put into the heating box 100 , it occupies less space.

The first connecting pipe 2242 is welded to the straight pipe 210 . This structure makes the connection between the straight pipe 210 and the side pipe 220 more stable.

The sample tube body 200 is made of quartz material. The quartz material is an inert material, will not react with the tobacco sample 500, and has the advantage of being easy to clean.

In order to limit the position where the tobacco sample 500 is loaded into the straight tube 210, the inner wall of the straight tube 210 is provided with at least two stabs 300, at least two stabs 300 are evenly distributed on the inner wall of the straight tube 210, at least two stabs 300 is on the same cross-section of the straight pipe 210. In this embodiment, the number of stabs 300 is three.

The sample tube assembly also includes a pad body 400. When the tobacco sample 500 is loaded into the straight tube 210, one end of the tobacco sample 500 leans against the stab 300, the pad body 400 is loaded into the straight tube 210, and the pad body 400 compresses the tobacco The other end of the sample 500. The cushion body 400 is used to seal the sample loading end 212 so that the tobacco sample 500 can be stably placed in the straight tube 210 . The pad body 400 is made of high temperature resistant material.

The sample tube assembly also includes two quartz wools 600 , one of which is disposed between the tobacco sample 500 and the stab 300 , and the other quartz wool 600 is disposed between the tobacco sample 500 and the pad body 400 . The quartz wool 600 is arranged at both ends of the tobacco sample 500 to prevent the tobacco sample 500 from being scattered in the straight pipe 210 . At the same time, the quartz wool 600 prevents the tobacco sample 500 from sliding in the straight pipe 210 during the suction process; in general, the quartz wool 600 near the pad body 400 is at the junction of the straight pipe 210 and the side pipe 220, and the setting of the quartz wool 600 The filling height of the tobacco sample 500 can be fixed, and the parallelism of the experimental results can be improved.

The straight tube 210 is provided with a tube body narrowing portion 213 , the tube body narrowing portion 213 is located between the thorn 300 and the first suction end 211 , and the inner diameter of the tube body narrowing portion 213 is smaller than the inner diameter of the straight tube 210 . The narrowing portion 213 of the tube body allows observing the atomization effect of the tobacco sample 500 even directly on the tube.

The airflow control device is a smoking machine. When the airflow control device is a smoking machine, the smoking machine sucks air into the sample tube assembly 200 to make the aerosol in the sample tube assembly 200 flow.

Using the tobacco sample smoke aerosol collection method of the tobacco sample smoke release system of this embodiment, when the airflow control device is a smoking machine, put the sample tube body 200 containing the tobacco sample 500 into the heating box 100 until One of the first suction end 211 of the tube 210 and the second suction end 221 of the side tube 220 is connected to the air, the other is connected to the trap 810 and the smoking machine in turn, the heating box 100 is turned on, and the sample tube body 200 The tobacco sample 500 releases aerosol after being heated, the smoking machine performs suction, air enters the sample tube body 200, and the trap 810 collects the released aerosol. The heating box 100 can evenly heat the tobacco sample 500 in the sample tube body 200, so that the tobacco sample 500 can continuously and steadily release aerosol; the first suction end 211 of the straight tube 210 and the second suction end of the side tube 220 One of the suction ends 221 is connected to the air, and the other is connected to the trap 810 and the smoking machine in turn, so as to meet different experimental requirements.

The trap 810 is a solvent trap, a solid adsorbent trap, an electrostatic trap, or a cold trap trap.

In the tobacco sample smoke aerosol collection method, when the smoking machine is used for smoking, the suction volume is 5-100mL per puff, the duration of each puff is 1-10s, and the puff frequency is 1-4 puffs per minute.

In this embodiment, the suction volume is: 35mL per mouth; the suction duration is 2s; the suction frequency: 4 mouthfuls per minute.

Example 2

As shown in FIGS. 3 to 6 , the difference between this embodiment and Embodiment 1 is that the airflow control device is an airflow input device. When the air flow control device is an air flow input device, the air flow input device blows air to the sample tube assembly 200 to make the aerosol in the sample tube assembly 200 flow.

The air flow input device is a moisture delivery system 700, the moisture delivery system 700 includes an air supply device 710 and a humidification airtight container 720 communicated with the air supply device 710, the humidification airtight container 720 is filled with water, and one end of an air guide tube 730 is connected to the The output end of the air supply device 710 is connected, the other end of the air guide pipe 730 is inserted into the water contained in the humidification airtight container 720, one end of a moisture conduit 740 is connected with the humidification airtight container 720, and the other end of the moisture conduit 740 is connected to the straight pipe 210 The first suction end 211 of the side pipe 220 or the second suction end 221 of the side pipe 220 communicates. The dry gas enters the water contained in the humidification airtight container 720 through the air duct 730, and the dry gas combines with water to form moisture with humidity and enters the sample tube body 200, so that the humidity of the gas passed into the sample tube body 200 meets the experimental requirements. demand. The humidification airtight container 720 is an airtight gas humidification bottle.

The air supply device 710 includes a sequentially connected air supply element 711 and an air flow control member 712 communicated with the output end of the air supply element 711 , and the output end of the air flow control element 712 is connected to the air duct 730 . The airflow control part 712 is a mass flow meter, and the airflow control part 712 can control the flow rate of the air. In this embodiment, the air supply element 711 is an air cylinder, and the air cylinder contains dry air. The output end of the air cylinder is connected to a decompression valve 713 , and the decompression valve 713 is connected to an air flow control member 712 . The pressure reducing valve 713 is a valve for reducing the inlet pressure to the outlet pressure required by the experiment.

The moisture delivery system 700 also includes a gas stabilizing bottle 750, the input end of the gas stabilizing bottle 750 communicates with the moisture conduit 740 of the humidification airtight container 720, and the output end of the gas stabilizing bottle 750 communicates with the first suction end 211 of the straight pipe 210 or The second suction end 221 of the side pipe 220 communicates. The gas stabilization bottle 750 makes the dry air and water fully mixed, and then enters the sample tube body 200 .

Adopt the tobacco sample smoke aerosol collection method of the tobacco sample smoke release system of this embodiment, put the sample tube body 200 containing the tobacco sample 500 into the heating box 100, the first suction end 211 and the side of the straight tube 210 One of the second suction ends 221 of the external pipe 220 is connected to the moisture conduit 740 of the moisture delivery system 700, and the other is connected to the trap 810 in turn, and the tobacco sample 500 in the heating box 100 is heated to release an aerosol, Moisture enters the sample tube body 200, and the moisture drives the aerosol in the sample tube body 200 to flow to the trap 810, and the trap 810 collects the released aerosol. The moisture conduit 740 of the moisture delivery system 700 enters the moisture with humidity into the sample tube body 200, so that the humidity of the gas passing through the sample tube body 200 can be controlled, which can meet the requirements of the experiment.

The output end of the airflow control part 712 is connected to the air duct 730, and the airflow control part 712 controls the flow rate of the gas to be 5-300 mL/min. In this embodiment, the gas flow control member 712 controls the flow rate of the passing gas to be 140 mL/min.

The invention uses a gas chromatographic oven as a heating source, and has the advantages of rapid temperature rise and fall, accurate temperature control, and convenient loading of sample tubes. The first suction end 211, the sample loading end 212, and the second suction end 221 of the sample tube body 200 of the present invention form a design of three mouths, and the first suction end 211 can directly collect smoke, and has The advantage of large collection volume; the second suction end 221 can capture the smoke after the intense atomization at the conversion of the atomization connecting pipe 224 and the atomization main pipe 223; the sample loading end 212 facilitates the loading and cleaning of the tobacco sample 500 During the experiment, the sample loading end 212 is sealed with a high-temperature resistant pad 400, the first suction end 211 or the second suction end 221 is used for suction and collection, and the other one is supplemented with cold air. The stab 300 is used to fix the quartz wool 600 to prevent the tobacco sample 500 from sliding in the sample tube during the suction process, and at the same time, it can fix the filling height of the tobacco sample 500 to improve the parallelism of the experimental results. The airflow generated by the airflow control device in the method for collecting tobacco sample smoke aerosol of the present invention drives the aerosol in the sample tube assembly 200 to flow, which conforms to the way of conventional smoking, and the obtained experimental results have universal recognition.

The invention can use dry air as the gas source, carry out the aerosol after steady flow and humidification, is not affected by the external environment, and has the characteristics of high stability. The tobacco sample smoke aerosol collection method provided by the invention is easy to operate and has high experimental efficiency.

The following four examples can further illustrate that the gas chromatograph oven as a heating device can provide a stable heating platform for tobacco raw materials to release smoke aerosol in a heated non-combustion state.

Example 3

As shown in Figures 1 to 4, the sample tube body 200 of Embodiment 1 is used, a very thin thermocouple is inserted into the first suction end 211 at one end of the straight tube 210, and the temperature measurement point is the straight tube 1 cm below the stab 300 At the inner wall of the straight pipe 210 , use quartz wool 600 to fix the temperature measuring point of the ultra-thin thermocouple close to the inner wall of the straight pipe 210 . Then the straight tube 210 was placed in the gas chromatograph oven with the setting value of the heating box 100 at 300° C., and the curve of temperature changing with time measured by the ultrafine thermocouple is shown in FIG. 7 .

It can be seen from the results in Fig. 7 that when the straight tube 210 is placed in the gas chromatograph furnace temperature box with the setting value of the heating box 100 at 300°C, the temperature fed back by the ultra-fine thermocouple rises rapidly and stabilizes after 2 minutes. Within 15 minutes, the inner wall temperature of the quartz heating tube is 292.7±0.1°C. It can be seen that, as a heating device, the gas chromatograph oven thermostat can provide a stable heat supply because the volume of its heating chamber is much larger than the volume of the heating area of the sample tube body 200, and it can release smoke for the tobacco raw material in a heating and non-combustion state. The aerosol provides a stable heating platform.

Example 4

As shown in Figures 1 to 4, the tobacco sample smoke release system of Embodiment 1 is used to fill the straight pipe 210 with a tobacco sample 500 with a height of two centimeters, the tobacco sample 500 is granular, and the upper and lower ends of the tobacco sample 500 Fix it with quartz wool 600 , and seal the sample loading end 212 of the straight tube 210 with a pad 400 . A very thin thermocouple is inserted into the first suction end 211 of the straight tube 210 , and the temperature measurement point is inside the sample 1 cm below the stab 300 . A catcher 810 is set at the second suction end 221 of the side pipe 220, and the catcher 810 is connected to a smoking machine. The suction parameters of the smoking machine are: 35mL/mouth, the suction duration is 2s, and the suction frequency is 4 mouthfuls/min , Suction according to the ISO suction method.

While placing the sample tube body 200 in a gas chromatograph oven with a furnace temperature setting value of 300°C, start the smoking machine and start smoking. The curve of the temperature measured by the ultra-fine thermocouple over time is shown in Figure 8. .

It can be seen from the results in Fig. 8 that when the sample tube body 200 is placed in the gas chromatograph oven with the furnace temperature setting value of 300°C, the temperature fed back by the ultra-fine thermocouple rises rapidly, and is extremely high when the smoking machine sucks. The temperature fed back by the thin thermocouple drops rapidly. The temperature of the tobacco sample 500 was 295.0° C. at the highest temperature and 248.2° C. at the lowest temperature during the periodical heating and cooling process. When inhaling, the cold air in the environment enters from the direct suction port, flows through the tobacco particle sample and takes away the heat, causing the temperature fed back by the ultra-fine thermocouple to drop rapidly, and then the gas chromatographic oven quickly replenishes heat, making the ultra-fine The temperature fed by the thermocouple rises rapidly. It can be seen that, as a heating device, the gas chromatographic furnace oven is used for smoking by a smoking machine. In the smoking state, it provides an efficient experimental method for the release of smoke aerosols from tobacco raw materials in a heated non-combustion state.

Example 5

As shown in Figures 3 to 6, the tobacco sample smoke release system of Embodiment 2 is used to fill the straight pipe 210 with a tobacco sample 500 with a height of two centimeters, the tobacco sample 500 is granular, and the upper and lower ends of the tobacco sample 500 Fix it with quartz wool 600 , and seal the sample loading end 212 of the straight tube 210 with a pad 400 . A very thin thermocouple is inserted into the first suction end 211 of the straight pipe 210 , and the temperature measurement point is the inside of the tobacco sample 500 1 cm below the stick 300 . The second suction end 221 of the side pipe 220 is supplied with continuously humidified air, that is, the moisture is supplied through the moisture delivery system 700 of Embodiment 2, and the stable air flow rate of the mass flow meter is 140 mL/min.

The sample tube body 200 was placed in a gas chromatograph oven with a set temperature of 300° C., and the curve of the temperature over time measured by the ultrafine thermocouple is shown in FIG. 9 .

It can be seen from the results in Fig. 9 that when the sample tube body 200 is placed in the gas chromatograph oven with the furnace temperature setting value of 300°C, the temperature fed back by the ultra-fine thermocouple rises rapidly, and a constant temperature platform appears at 100°C, which lasts The time is about 0.1min, and then the temperature continues to rise, and finally stabilizes at about 300°C. It can be seen that the gas chromatography oven as a heating device, the mass flow meter stabilizes the air flow rate, and provides an efficient experimental method for tobacco raw materials to release smoke aerosols in a heated non-combustion state under continuous ventilation.

Example 6

As shown in Figures 1 to 4, the tobacco sample smoke release system of Embodiment 1 is used to fill the straight pipe 210 with a tobacco sample 500 with a height of two centimeters, the tobacco sample 500 is granular, and the upper and lower ends of the tobacco sample 500 Fix it with quartz wool 600 , and seal the sample loading end 212 of the straight tube 210 with a pad 400 . A trap 810 is set at the first suction end 211 of the straight pipe 210, and the trap 810 is connected to a smoking machine. The suction parameters of the smoking machine are: 35mL/mouth, the suction duration is 2s, and the suction frequency is 4 mouthfuls/min. Take 20 puffs in total.

Put the three sample tube bodies 200 at the same time in the gas chromatograph oven with the set temperature of 180°C; 210°C; 240°C; 270°C; 300°C; 330°C; suck. After smoking, remove the Cambridge filter trap 810, and analyze the trapping efficiency of the trap 810 and the smoke aerosol components captured on the Cambridge filter, including nicotine, glycerin, moisture, aroma components, etc.

Table 1. The weight gain of the trap 810 before and after the tobacco particle sample smoking machine smoking test

Table 1 shows the weight gain of the trap 810 of the tobacco sample 500 before and after the smoking test of the smoking machine in three parallel experiments at different temperatures. It can be seen from the results that the present invention provides a set of rapid and precise temperature control conditions and a system that enables tobacco raw materials to release smoke aerosols in a heated non-combustion state. The gas chromatography furnace oven is used as a heating device, and the sample tube body 200 is a sample tube. , the smoking machine releases the smoke aerosol, and the results of using the Cambridge filter to capture the particle phase composition of the smoke aerosol have good parallelism, and the standard deviation range is controlled within 5%. The repetitive experiments of this system are parallel The performance is good, which is beneficial to carry out relevant basic experiments on the system under the smoking state of heat-not-burn cigarettes, and the experimental results are highly reliable.

At the same time, nicotine, glycerin, moisture, and aroma components in the smoke aerosol components captured on the Cambridge filter were quantitatively analyzed. Among them, the release law of the key component nicotine in the smoke aerosol is shown in Figure 10. Nicotine is the release amount per unit mass under the dry state of the tobacco raw material. The results are the average of the results of 3 parallel experiments. The experimental results show that tobacco The nicotine release amount of the granular sample in the smoking state is within the tested range, that is, the test range is 180°C-360°C, and the change range is between 7.3-8.1mg/g, indicating that the nicotine release is basically complete within this temperature range . From the above experimental results, it can be seen that on the system that releases smoke aerosol in the heat-not-burn state, the smoke aerosol release law of the heat-not-burn cigarette sample in the smoking state is studied, and the results obtained by using the relevant experimental methods High reliability, high novelty and practicability.

Example 7

As shown in Figures 3 to 6, the tobacco sample smoke release system of Embodiment 2 is used to fill the straight pipe 210 with a tobacco sample 500 with a height of two centimeters, the tobacco sample 500 is granular, and the upper and lower ends of the tobacco sample 500 Fix it with quartz wool 600 , and seal the sample loading end 212 of the straight tube 210 with a pad 400 . The second suction end 221 of the side pipe 220 is fed with continuously humidified air, and the steady air flow rate of the mass flow meter is 140 mL/min. A trap 810 is provided at the first suction end 211 of the straight pipe 210 .

Put three quartz heating tubes in the gas chromatograph oven with temperature set at 180°C; 210°C; 240°C; 270°C; 300°C; 330°C; . After the suction is completed, the trap 810 is removed, and the trapping efficiency of the trap 810 and the components of the smoke aerosol captured on the Cambridge filter, including nicotine, glycerin, moisture, and flavor components, are analyzed.

Table 1. The weight gain of trap 810 before and after the continuous ventilation test of tobacco particle samples

Table 2 shows the weight gain of the trap 810 before and after the continuous ventilation test of the tobacco particle samples in three parallel experiments at different temperatures. It can be seen from the results that the present invention provides a set of fast and accurate temperature control conditions and a system that enables tobacco raw materials to release smoke aerosols in a heated non-combustion state. The gas chromatography furnace oven is used as the heating device, and the sample tube body 200 made of quartz is The sample tube and the mass flow meter provide continuous ventilation to release the flue gas aerosol. The results of using the Cambridge filter to capture the particle phase components of the flue gas aerosol have good parallelism, and the standard deviation range is controlled within 4%. This system is heavy The refolding experiment has good parallelism, which is conducive to carrying out relevant basic experiments on the system under the condition of continuous ventilation of HNB cigarettes, and the experimental results are highly reliable.

At the same time, nicotine, glycerin, moisture, and aroma components in the smoke aerosol components captured on the Cambridge filter were quantitatively analyzed. Among them, the release law of the key component nicotine in the smoke aerosol is shown in Figure 11. Nicotine is the release amount per unit mass under the dry state of tobacco raw materials. The results are the average of the results of 3 parallel experiments. The experimental results show that tobacco The release amount of nicotine in the particle sample increases slowly in the range of 180°C-240°C under the condition of continuous ventilation. In the range of 180°C-360°C, the release amount of nicotine changes in the range of 7.2-9.5mg/g, indicating that In the range of 240°C-360°C, the nicotine is basically completely released. From the above experimental results, it can be seen that the smoke aerosol release law of the heated non-combustion cigarette samples under the continuous ventilation state was studied on the automatic system that released the smoke aerosol in the heating-not-burning state, and the results obtained by using the relevant experimental methods The results have high reliability, high novelty and practicability.

To sum up, the present invention effectively overcomes various shortcomings in the prior art and has high industrial application value.

The above-mentioned embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims (12)

1. A tobacco sample smoke release system, characterized in that, comprising: a heating box (100) and at least one sample tube assembly; The heating box (100) is provided with at least one box installation hole (110) for inserting the sample tube assembly; The sample tube assembly includes: a sample tube body (200); the sample tube body (200) includes a straight tube (210) and a side tube (220); One end of the straight pipe (210) is the first suction end (211), and the other end of the straight pipe (210) is the loading end (212) for the tobacco sample (500); One end of the side pipe (220) is the second suction end (221), and the other end of the side pipe (220) is the ventilation end (222) communicating with the straight pipe (210), and the The ventilation end (222) of the side pipe (220) is close to the sample loading end (212) of the straight pipe (210); The sample tube body (200) of the tobacco sample (500) is inserted into the heating box (100) through the box installation hole (110), and the sample loading end (212) of the straight tube (210) and The ventilation ends (222) of the side pipes (220) are all in the heating box (100); One of the first suction end (211) of the straight pipe (210) and the second suction end (221) of the side pipe (220) is connected to an airflow control device. 2. The smoke release system for tobacco samples according to claim 1, characterized in that: the heating box (100) is a gas chromatography oven oven. 3. The tobacco sample smoke release system according to claim 1, characterized in that: the sample tube body (200) is made of transparent material; the side tube (220) includes: an atomizing main tube (223) and a mist tube An atomization communication pipe (224), one end of the atomization main pipe (223) communicates with one end of the atomization communication pipe (224), and the other end of the atomization main pipe (223) is the side pipe (220 ) of the second suction end (221), the other end of the atomization communication pipe (224) is the ventilation end (222) of the side pipe (220); the inner diameter of the atomization main pipe (223) is greater than The inner diameter of the atomizing communication pipe (224). 4. The tobacco sample smoke release system according to claim 1, characterized in that: at least two stabs (300) are provided on the inner wall of the straight pipe (210). 5. The tobacco sample smoke release system according to claim 4, characterized in that: the sample tube assembly also includes a pad (400), when the tobacco sample (500) is loaded into the straight tube (210) , one end of the tobacco sample (500) leans against the stab (300), the pad body (400) is loaded into the straight tube (210), and the pad body (400) presses the The other end of the tobacco sample (500). 6. The tobacco sample smoke release system according to claim 5, characterized in that: the sample tube body (200) also includes two quartz wools (600), one of which is set on the Between the tobacco sample (500) and the stick (300), the other quartz wool (600) is arranged between the tobacco sample (500) and the pad (400). 7. The smoke release system for tobacco samples according to claim 6, characterized in that: the straight pipe (210) is provided with a pipe body narrowing portion (213), and the pipe body narrowing portion (213) is in the Between the stab (300) and the first suction end (211), the inner diameter of the tube narrowing portion (213) is smaller than the inner diameter of the straight tube (210). 8. The tobacco sample smoke releasing system according to claim 1, characterized in that: the airflow control device is an airflow input device or a smoking machine. 9. The tobacco sample smoke release system according to claim 8, characterized in that: the airflow input device is a moisture delivery system (700), and the moisture delivery system (700) includes an air supply device (710) and a humidification airtight container (720) communicated with the air supply device (710). The output end of the air duct (730) is inserted into the water contained in the humidification airtight container (720), and one end of a moisture conduit (740) communicates with the humidification airtight container (720). The other end of the moisture conduit (740) communicates with the first suction end (211) of the straight pipe (210) or the second suction end (221) of the side pipe (220). 10. The smoke release system for tobacco samples according to claim 9, characterized in that: the air supply device (710) comprises an air supply element (711) connected in sequence and an output of the air supply element (711) The airflow control part (712) connected at the end, the output end of the airflow control part (712) is connected with the air duct (730). 11. The tobacco sample smoke aerosol collection method adopting the tobacco sample smoke release system described in any one of claims 1-8, is characterized in that: when the airflow control device is a smoking machine, the tobacco sample will be housed The sample tube body (200) of the sample (500) is put into the heating box (100), the first suction end (211) of the straight tube (210) and the second suction end (221) of the side tube (220) One of them communicates with the air, the other connects the trap (810) and the smoking machine in turn, the heating box (100) is turned on, and the tobacco sample (500) in the sample tube body (200) is heated to release an aerosol , the smoking machine performs suction, air enters the sample tube body (200), and the trap (810) collects the released aerosol. 12. The tobacco sample smoke aerosol collection method adopting the tobacco sample smoke release system described in any one of claims 1-10, is characterized in that: when the airflow control device is an airflow input device, a The sample tube body (200) of the tobacco sample (500) is put into the heating box (100), the first suction end (211) of the straight tube (210) and the second suction end (221) of the side pipe (220) One of them is connected to the airflow input device, the other is connected to the trap (810) in turn, the heating box (100) is turned on, and the tobacco sample (500) in the sample tube body (200) is heated to release an aerosol , the airflow in the airflow input device enters the sample tube body (200), and the trap (810) collects the released aerosol.

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