Sampling device of smoking machine and air suction auxiliary controller for sampling of smoking machine

Abstract

The invention relates to a smoking machine sampling device and an air suction auxiliary controller for smoking machine sampling, and belongs to the field of smoking machine sampling devices. The smoking machine sampling device comprises a smoke suction pipeline, the smoke suction pipeline comprises a first connecting pipeline connected between a cigarette holder and a smoke capturing device and a second connecting pipeline connected between the smoke capturing device and a smoking machine suction unit, and the smoking machine sampling device further comprises an air suction auxiliary pipeline, the air pumping auxiliary pipeline comprises an air inlet pipeline connected to the first connecting pipeline and an air outlet pipeline connected to the second connecting pipeline, and an outlet of the air outlet pipeline is connected with a sampling pump; the sampling device of the smoking machine further comprises a control valve for controlling the smoke suction pipeline and the empty suction auxiliary pipeline to be opened alternately. The flue gas suction pipeline and the empty suction auxiliary pipeline are controlled to be opened alternately, empty suction is carried out in the suction interval of the flue gas suction pipeline in time, flue gas deposition and aging after suction are avoided, and the trapping accuracy of flue gas components to be detected is improved.

Description

Technical Field

[0001] The invention relates to a smoking machine sampling device and an air extraction auxiliary controller for smoking machine sampling, belonging to the field of smoking machine sampling devices. Background Art

[0002] Smoking tobacco products include cigarettes, heated cigarettes, and electronic cigarettes. When smoking tobacco products, not only nicotine is produced, but also sensory components such as aroma. Nicotine is the main alkaloid in tobacco. Currently, the conventional control indicators of tobacco products by domestic and foreign regulatory agencies are nicotine content (μg·g -1 As a consumer product, the quality of tobacco smoke aroma components has a significant impact on consumers' sensory experience. However, it is unrealistic to monitor these data in vivo, so it is necessary to research and develop in vitro monitoring technology.

[0003] At present, the method for detecting relevant components of smoking tobacco products after smoking often uses a linear smoking machine and Cambridge filter to capture each puff of smoke, enrich the relevant components to be detected on the Cambridge filter, and then use organic solvents to extract them. Qualitative and quantitative analysis is carried out through large-scale instruments such as gas phase and gas chromatography-mass spectrometry to obtain the content of relevant components.

[0004] The invention patent application with application publication number CN103940639A discloses a device for capturing the main components of electronic cigarette smoke emissions, including an electronic cigarette sample holder, a collector and a smoking machine. The linear smoking machine is used to perform puffs one by one in ISO mode to measure the nicotine in its smoke emissions. However, the connecting pipe cavity of the smoking machine has a large volume, and the smoke in the cavity cannot be completely evacuated within the interval between two normal puffs (usually set to 1 minute), resulting in smoke deposition. The residual smoke will age and mix with the fresh smoke, affecting the accuracy of sampling, thereby adversely affecting the research results. Summary of the invention

[0005] The purpose of the present invention is to provide a smoking machine sampling device to solve the problem in the prior art that smoke in the smoking machine cavity cannot be completely extracted, causing the smoke to easily deposit and age, thus affecting the sampling accuracy.

[0006] The second object of the present invention is to provide an air extraction auxiliary controller for smoking machine sampling to solve the problem in the prior art that the smoke in the smoking machine cavity cannot be completely extracted, causing the smoke to easily deposit and age, affecting the sampling accuracy.

[0007] In order to achieve the above purpose, the technical solution of the present invention is:

[0008] A smoking machine sampling device includes a smoke suction pipeline, the smoke suction pipeline includes a first connecting pipeline connected between a cigarette holder and a smoke capture device, and a second connecting pipeline connected between the smoke capture device and a smoking unit of the smoking machine, and also includes an air extraction auxiliary pipeline, the air extraction auxiliary pipeline includes an air inlet pipeline connected to the first connecting pipeline and an air outlet pipeline connected to the second connecting pipeline, and the outlet of the air outlet pipeline is connected to a sampling pump; the smoking machine sampling device also includes a control valve for controlling the alternating opening of the smoke suction pipeline and the air extraction auxiliary pipeline.

[0009] The smoking machine sampling device of the present invention is a pioneering invention. The present invention connects an air extraction auxiliary pipeline to the smoke suction pipeline, and controls the smoke suction pipeline and the air extraction auxiliary pipeline to be opened alternately by a control valve, so that the air extraction auxiliary pipeline performs air extraction during the suction interval of the smoke suction pipeline, accelerates the capture of smoke on the smoke suction pipeline by the capture device, avoids smoke deposition and aging in the smoke suction pipeline, improves the accuracy of capturing the smoke components to be detected, and truly reflects the composition of each component in the smoke.

[0010] The air outflow pipeline can reduce the gas volume, that is, the pressure, downstream of the smoke capture device. Together with the air inlet pipeline, the smoke on the smoke suction pipeline can be instantly captured by the smoke capture device, avoiding smoke deposition and aging in the pipeline.

[0011] Preferably, a first control valve is provided between the connection point of the air inlet pipeline, the first connecting pipeline and the cigarette holder, a second control valve is provided on the air inlet pipeline, and a third control valve is provided on the air outflow pipeline and the second connecting pipeline.

[0012] When the third control valve is connected to the second connecting pipeline and the first control valve is opened and the second control valve is closed, the smoke suction pipeline is opened and the air extraction auxiliary pipeline is closed; when the third control valve is connected to the air outflow pipeline and the second control valve is opened and the first control valve is closed, the air extraction auxiliary pipeline is opened and the smoke suction pipeline is closed.

[0013] Preferably, the inlet of the air inlet pipeline is connected to an air purification device. The air purification device purifies the air introduced from the outside to ensure that the air added to the pipeline does not bring in new pollution.

[0014] Preferably, the air purification device comprises a Cambridge filter and an activated carbon filter device which are sequentially connected along the air inlet direction.

[0015] Preferably, the air inlet pipeline, the air outlet pipeline and the second connecting pipeline are integrated in the air extraction auxiliary controller.

[0016] Preferably, the smoking machine sampling device also includes an air extraction auxiliary branch connected to the air outflow pipeline, the air extraction auxiliary branch has an air inlet; the air extraction auxiliary branch is provided with a sampling pump normally open valve, the sampling pump normally open valve is opened when smoke is extracted and is closed when the air extraction auxiliary pipeline is opened. Such a setting can prevent the flow of the sampling pump from failing to meet the extraction requirements in a short time when the smoke extraction pipeline and the air extraction auxiliary pipeline are switched in a short time, and avoid damage to the instrument caused by frequent switching of the sampling pump, thereby improving the stability of the sampling pump.

[0017] Preferably, the air extraction auxiliary branch, the air inlet pipeline, the air outlet pipeline, and the second connecting pipeline are integrated in the air extraction auxiliary controller.

[0018] Further preferably, the inlet of the air extraction auxiliary branch is connected to an air purification device, which includes a Cambridge filter and an activated carbon filter device connected in sequence along the air inlet direction.

[0019] The second technical solution of the present invention is:

[0020] An air extraction auxiliary controller for smoking machine sampling comprises a shell, on which are provided a smoke interface, an air interface, a smoking machine interface, a sampling pump interface and a first air inlet, a smoke extraction connecting pipeline is connected between the smoke interface and the smoking machine interface, an air inlet pipeline is connected between the first air inlet and the air interface, an air outflow pipeline is connected between the smoke interface and the sampling pump interface, and the air extraction auxiliary controller further comprises a control valve for controlling the alternate opening of the smoke extraction connecting pipeline and the air outflow pipeline.

[0021] The present invention integrates a smoke suction connection pipeline, an air inlet pipeline, an air outlet pipeline and a control valve in an air suction auxiliary controller, which is convenient for controlling and switching the smoke suction connection pipeline and the air outlet pipeline. Air suction is performed in the suction interval of the smoke suction pipeline through the air suction auxiliary pipeline, so as to avoid smoke deposition and aging in the smoke suction pipeline, improve the accuracy of capturing the smoke components to be detected, and truly reflect the composition of each component in the smoke. Moreover, the controller of the present invention is respectively connected to the devices required for smoke detection through the smoke interface, air interface, smoking machine interface, sampling pump interface and the first air inlet, so that smoke detection and analysis can be performed, making smoke detection and analysis more convenient and quick.

[0022] Further preferably, a second control valve is also provided on the air inlet pipeline.

[0023] Preferably, a second air inlet is further provided on the housing, and an air extraction auxiliary branch is connected between the second air inlet and the sampling pump interface.

[0024] Preferably, a sampling pump normally-open valve is provided on the air extraction auxiliary branch, and the sampling pump normally-open valve is opened when smoke is extracted and closed when the air outflow pipeline is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a diagram of a smoking machine sampling device according to Embodiment 1 of the present invention;

[0026] Figure 2 This is a front view of an air extraction auxiliary controller for sampling a smoking machine according to embodiment 2 of the present invention;

[0027] Figure 3 A top view of an air extraction auxiliary controller for sampling a smoking machine according to Embodiment 2 of the present invention;

[0028] In the figure, 1-the second Cambridge filter, 2-the second activated carbon filter device, 3-the housing, 4-the touch screen, 5-the air interface, 6-the smoke interface, 7-the first Cambridge filter, 8-the first activated carbon filter device, 9-the smoking machine interface, 10-the sampling pump interface, 11-the cigarette holder, 12-the first control valve, 13-the smoke capture device, 14-the smoking machine suction unit, 15-the second control valve, 16-the third control valve, 17-the fourth control valve, 18-the sampling pump, 19-the air extraction auxiliary controller for smoking machine sampling. DETAILED DESCRIPTION

[0029] The present invention sets an air extraction auxiliary pipeline on the smoke extraction pipeline, and immediately opens the air extraction auxiliary pipeline after the cigarette is finished, so that the smoke in the smoke extraction pipeline is extracted in time, preventing smoke deposition and aging, and allowing fresh smoke samples to be adsorbed in time. In this way, the mutual conversion between smoke components in different states caused by smoke aging can be avoided, so that the smoke components obtained by the smoke capture device are the real situation after smoking, laying a foundation for the subsequent accurate analysis of smoke components.

[0030] The technical solution of the present invention is further described below in conjunction with specific implementation methods.

[0031] 1. The specific embodiment of the smoking machine sampling device of the present invention is as follows:

[0032] Example 1

[0033] The smoking machine sampling device of this embodiment is as follows: Figure 1 As shown, it includes a smoke suction pipeline, an air extraction auxiliary pipeline, and an air extraction auxiliary branch.

[0034] The smoke suction pipeline includes a cigarette holder 11, a first connecting pipeline, a smoke collecting device 13, a second connecting pipeline, and a smoking machine suction unit 14, which are connected in sequence. The first connecting pipeline is provided with a first control valve 12 to control the suction of the cigarette holder 11. The function of the smoke suction pipeline is to suck the cigarette to be tested on the cigarette holder 11, so that the smoke generated by the suction is captured by the smoke collecting device 13 and finally reaches the smoking machine suction unit 14.

[0035] The air extraction auxiliary pipeline includes a first Cambridge filter 7, a first activated carbon filter device 8, an air inlet pipeline, a smoke capture device 13, an air outlet pipeline, and a sampling pump 18, which are connected in sequence. The function of the air extraction auxiliary pipeline is to inhale the purified air into the first connecting pipeline of the smoke suction pipeline, pass through the smoke capture device 13, so that the smoke in the smoke suction pipeline is captured by the smoke capture device 13 in time, and then pass through the air outflow pipeline to reach the sampling pump 18 to discharge the air.

[0036] A second control valve 15 is provided on the air inlet pipeline to control the opening and closing of air suction. A third control valve 16 is provided at the connection between the air outlet pipeline and the second connecting pipeline. The opening and closing characteristics of the third control valve 16 are that the upper connection opens the second connecting pipeline of the smoke suction pipeline, and the lower connection opens the air outlet pipeline.

[0037] The air pumping auxiliary branch includes a second Cambridge filter 1, a second activated carbon filter device 2, and a fourth control valve 17 and a sampling pump 18, which are connected in sequence and arranged at the intersection of the air pumping auxiliary branch and the air pumping outflow pipeline. The opening and closing characteristics of the fourth control valve 17 are that the air pumping auxiliary branch is opened when the upper road is connected, and the air pumping auxiliary pipeline is opened when the lower road is connected.

[0038] An alternative method in other implementation scenarios is that a control valve is provided on the second connecting pipeline of the smoke extraction pipeline, a control valve is provided on the air extraction auxiliary branch, and a control valve is provided between the intersection of the air extraction outflow pipeline with the air extraction auxiliary branch and the intersection with the second connecting pipeline. The three control valves cooperate to control the alternating opening of the smoke extraction pipeline and the air extraction auxiliary pipeline.

[0039] The implementation operation flow of the smoking machine sampling device of this embodiment is as follows:

[0040] When smoking a cigarette, insert the cigarette into the cigarette holder 11 of the smoking machine, open the smoking unit 14 of the smoking machine, and at the same time open the first control valve 12, the upper road of the third control valve 16, and the upper road of the fourth control valve 17, and close the second control valve 15, that is, open the smoke suction pipeline and the air extraction auxiliary branch, and close the air extraction auxiliary pipeline. After detecting that the smoke suction pipeline has been sucked, close the first control valve 12, open the second control valve 15, the lower road of the third control valve 16, and the lower road of the fourth control valve 17, that is, open the air extraction auxiliary pipeline, close the smoke suction pipeline and the air extraction auxiliary branch, so that a passage is formed between the air and the sampling pump 18, and the smoke suction pipeline is air-extracted. In this way, the smoke suction pipeline and the air extraction auxiliary pipeline are sucked alternately.

[0041] 2. The specific embodiment of the air extraction auxiliary controller for smoking machine sampling of the present invention is as follows:

[0042] Example 2

[0043] The front view of the air extraction auxiliary controller 19 for sampling the smoking machine of this embodiment is as follows: Figure 2 As shown, the top view is Figure 3 As shown, it specifically includes a shell 3, on which a touch screen 4, a smoke interface 6, an air interface 5, a smoking machine interface 9, a sampling pump interface 10, and a first air inlet and a second air inlet are provided; a smoke suction connecting pipeline is connected between the smoke interface 6 and the smoking machine interface 9, an air inlet pipeline is connected between the first air inlet and the air interface 5, and an air outflow pipeline is connected between the smoke interface 6 and the sampling pump interface 10, and an air extraction auxiliary branch is connected between the second air inlet and the sampling pump interface 10; a second control valve 15 is provided on the air inlet pipeline, a third control valve 16 is provided at the connection between the smoke suction connecting pipeline and the air outflow pipeline, a fourth control valve 17 is provided on the air extraction auxiliary branch, and the fourth control valve 17 and the third control valve 16 are connected by pipelines.

[0044] The use process of the air extraction auxiliary controller for smoking machine sampling: When using the air extraction auxiliary controller 19 for smoking machine sampling, you can refer to Figure 1 The smoke interface 6 is connected to the smoke capture device 13 and the cigarette holder 11 in sequence, the air interface 5 is connected to the pipeline between the smoke capture device 13 and the cigarette holder 11, the smoking machine interface 9 is connected to the smoking machine suction unit 14, the sampling pump interface 10 is connected to the sampling pump 18, the first air inlet is connected to the first Cambridge filter 7 and the first activated carbon filter device 8, and the second air inlet is connected to the second Cambridge filter 1 and the second activated carbon filter device 2.

[0045] The following is an example:

[0046] Five reference cigarettes were smoked using the ISO standard smoking mode (one puff every 60 seconds, 35 mL of each puff, and 2 seconds of puff duration). The smoke aerosol gas phase and particulate phase were separated and captured using a smoke capture device 13, such as an absorption bottle and an electrostatic capture. The absorption bottle selected 20 mL of methanol as the absorption liquid and placed in a cold trap. The voltage of the electrostatic collector was 17.5 kV. When smoking a cigarette, the cigarette was inserted into the cigarette holder 11 of the smoking machine, and the smoking unit 14 of the smoking machine was turned on. After 4 seconds, the air extraction auxiliary controller simultaneously opened the first control valve 12, the upper circuit of the third control valve 16, and the upper circuit of the fourth control valve 17, and closed the second control valve 15, that is, the smoke extraction pipeline and the air extraction auxiliary branch were opened, and the air extraction auxiliary pipeline was closed, and air extraction was performed for 4 seconds. After it is detected that the smoke suction pipeline has been sucked, the first control valve 12 is closed, and the second control valve 15, the lower line of the third control valve 16, and the lower line of the fourth control valve 17 are opened, that is, the air extraction auxiliary pipeline is opened, and the smoke suction pipeline and the air extraction auxiliary branch are closed to form a passage between the air and the sampling pump 18, and the smoke suction pipeline is air-extracted. In this way, the suction of the smoke suction pipeline and the air extraction auxiliary pipeline are alternately performed.

[0047] After smoking 5 cigarettes, wash the electrostatic collection tube with 20 mL of methanol to obtain a methanol solution of the particle phase, take a certain amount of it into a chromatographic bottle, add acetophenone-d8, styrene-d8, benzophenone-d10 and diisobutyl phthalate-d4 internal standard solutions, seal it for testing. Take a certain amount of methanol solution of the gas phase in the absorption bottle into a chromatographic bottle, add acetophenone-d8, styrene-d8, benzophenone-d10 and diisobutyl phthalate-d4 internal standard solutions, seal it for testing.

[0048] The gas phase and particle phase samples to be tested are respectively fed into GC-MS / MS for analysis and detection of the aroma components therein. The gas chromatography conditions in the GC-MS / MS analysis are as follows: the chromatographic column is an elastic quartz capillary chromatographic column, the stationary phase is phenyl-methyl polysiloxane with a mass fraction of 50%, the specification is 60m×0.25mm×0.25μm, the injection port end is connected in series with a pre-column (5m×0.25mm), and the pre-column is a silanized inert quartz capillary column; the injection port temperature is 280℃; the injection volume is 0.8~1.0μL; the injection method is The sample was injected without split flow; the carrier gas was 99.999% pure helium, constant flow mode, flow rate was 1.5mL / min; the heating program was to maintain the initial temperature at 40℃ for 3min, then increase the temperature to 75℃ at a rate of 5℃ / min, then increase the temperature to 120℃ at a rate of 1℃ / min, then increase the temperature to 160℃ at a rate of 2℃ / min, and finally increase the temperature to 290℃ at a rate of 5℃ / min, and maintain for 10min. The test results are shown in Table 1.

[0049] The control group was to use no air extraction auxiliary pipeline to evacuate the smoke extraction pipeline, and other experimental conditions were the same as above. The test results are shown in Table 2.

[0050] As can be seen from Table 1, under the ISO standard puffing mode, air puffing was performed using an air puffing auxiliary pipeline, and the aroma components measured by smoking 5 reference cigarettes were as follows: the average release of furfuryl alcohol in the gas phase was 32.11 ng / cig, and the average release of furfuryl alcohol in the particle phase was 189.73 ng / cig; the average release of vanillin in the gas phase was 3.63 ng / cig, and the average release of vanillin in the particle phase was 44.69 ng / cig; as can be seen from Table 2, in the control group where air puffing was not performed using an air puffing auxiliary pipeline, the average release of furfuryl alcohol in the gas phase of the reference cigarettes was 29.14 ng / cig, the average release of furfuryl alcohol in the particle phase was 191.97 ng / cig, the average release of vanillin in the gas phase was 2.55 ng / cig, and the average release of vanillin in the particle phase was 45.38 ng / cig.

[0051] Table 1 Detection results of aroma components using air extraction auxiliary pipeline

[0052]

[0053] Table 2 Detection results of aroma components without using air extraction auxiliary pipeline

[0054]

[0055] According to the above experimental results, it can be found that for the same flue gas aroma components, after air extraction using an air extraction auxiliary pipeline, the content of gaseous phase aroma components captured in the absorption liquid is increased, while the proportion of particle phase aroma components captured by the electrostatic collector is reduced, indicating that air extraction avoids the aging of flue gas in the flue gas duct, reduces the conversion of gaseous phase matter into particle phase matter, and improves the accuracy of the detection results.

Claims

1. A smoking machine sampling device, comprising a smoke suction pipeline, the smoke suction pipeline comprising a first connecting pipeline connected between a cigarette holder and a smoke capture device, and a second connecting pipeline connected between the smoke capture device and a smoking machine suction unit, characterized in that: It also includes an air extraction auxiliary pipeline, which includes an air inlet pipeline connected to the first connecting pipeline and an air outflow pipeline connected to the second connecting pipeline, and the outlet of the air outflow pipeline is connected to a sampling pump; the smoking machine sampling device also includes a control valve that controls the alternating opening of the smoke suction pipeline and the air extraction auxiliary pipeline.

2. The smoking machine sampling device according to claim 1, characterized in that: A first control valve is arranged between the connection point of the air inlet pipeline, the first connecting pipeline and the cigarette holder, a second control valve is arranged on the air inlet pipeline, and a third control valve is arranged on the air outlet pipeline and the second connecting pipeline.

3. The smoking machine sampling device according to claim 1, characterized in that: The inlet of the air inlet pipeline is connected with an air purification device.

4. The smoking machine sampling device according to claim 3, characterized in that: The air purification device comprises a Cambridge filter and an activated carbon filter device which are sequentially connected along the air inlet direction.

5. The smoking machine sampling device according to any one of claims 1 to 4, characterized in that: The air inlet pipeline, the air outlet pipeline and the second connecting pipeline are integrated in the air extraction auxiliary controller.

6. The smoking machine sampling device according to any one of claims 1 to 4, characterized in that: The smoking machine sampling device also includes an air extraction auxiliary branch connected to the air outflow pipeline, the air extraction auxiliary branch has an air inlet; a sampling pump normally open valve is arranged on the air extraction auxiliary branch, the sampling pump normally open valve is opened when smoke is inhaled and is closed when the air extraction auxiliary pipeline is opened.

7. The smoking machine sampling device according to claim 6, characterized in that: The air pumping auxiliary branch, the air inlet pipeline, the air outlet pipeline and the second connecting pipeline are integrated in the air pumping auxiliary controller.

8. An air extraction auxiliary controller for sampling a smoking machine, characterized in that: The air extraction auxiliary controller comprises a shell, on which a smoke interface, an air interface, a smoking machine interface, a sampling pump interface and a first air inlet are provided. A smoke suction connecting pipeline is connected between the smoke interface and the smoking machine interface, an air inlet pipeline is connected between the first air inlet and the air interface, an air outflow pipeline is connected between the smoke interface and the sampling pump interface, and the air extraction auxiliary controller also comprises a control valve for controlling the alternate opening of the smoke suction connecting pipeline and the air outflow pipeline.

9. The air extraction auxiliary controller for sampling a smoking machine according to claim 8, characterized in that: The shell body is also provided with a second air inlet, and an air extraction auxiliary branch is connected between the second air inlet and the sampling pump interface.

10. The air extraction auxiliary controller for sampling a smoking machine according to claim 9, characterized in that: A sampling pump normally-open valve is provided on the air extraction auxiliary branch line, and the sampling pump normally-open valve is opened when smoke is extracted and closed when the air outflow pipeline is opened.

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