CN117686279A - Device for trapping cigarette smoke and operation method thereof - Google Patents

Abstract

The invention discloses a device for capturing cigarette smoke, which comprises: the first shell is provided with an air inlet hole for the inflow of cigarette smoke; the first casing can form the cavity after the cooperation of second casing with the first casing, and the cavity can be used for placing the cambridge filter disc, and the cambridge filter disc is used for catching the grain looks composition of cigarette flue gas, is provided with exhaust hole and first through-hole on the second casing at intervals, and the exhaust hole supplies cigarette flue gas to discharge, and first through-hole corresponds with the inlet port, can supply the measuring assembly to insert in order to measure. The device for capturing the cigarette smoke can realize additional online measurement of the cigarette smoke or the cigarette materials under the standard smoking condition. The invention also discloses an operation method of the device for capturing cigarette smoke.

Description

Device for trapping cigarette smoke and operation method thereof

Technical Field

The invention relates to the field of smoke trapping, in particular to a device for trapping cigarette smoke and an operation method thereof.

Background

When smoke analysis is performed on tobacco products such as cigarettes, electronic cigarettes and heated cigarettes, a Cambridge filter catcher is generally adopted to catch grain phase components of smoke. However, the structure and the function of the existing Cambridge filter disc catcher are single, and convenience is difficult to provide for scientific experiments such as online intervention of an additional measurement system and acquisition of gas phase components of the flue gas.

Disclosure of Invention

The invention aims to solve the technical problem that the catcher is difficult to be inserted into other experimental functions on line. The invention provides a device for capturing cigarette smoke, which can facilitate on-line intervention of other experimental functions (such as on-line temperature measurement or on-line gas phase sampling).

To solve the above technical problems, an embodiment of the present invention provides a device for capturing cigarette smoke, including: the first shell is provided with an air inlet hole for the inflow of cigarette smoke; the first casing can form the cavity after the cooperation of second casing with the first casing, and the cavity can be used for placing the cambridge filter disc, and the cambridge filter disc is used for catching the grain looks composition of cigarette flue gas, is provided with exhaust hole and first through-hole on the second casing at intervals, and the exhaust hole supplies cigarette flue gas to discharge, and first through-hole corresponds with the inlet port, can supply the measuring assembly to insert in order to measure.

By adopting the technical scheme, the additional measurement of the cigarette smoke or the cigarette materials on line under the standard smoking condition can be ensured.

According to another embodiment of the invention, the measuring assembly comprises a thermocouple for measuring the temperature of the cigarette smoke or the cigarette material and a casing into which the thermocouple is inserted.

According to another embodiment of the invention, the diameter of the inlet and outlet holes is at least 4mm.

According to another embodiment of the present invention, further comprising: the base, the one end of base can with the adaptation of second casing, the other end of base can with smoking machine looks adaptation, set up respectively on the base with exhaust hole and the corresponding second through-hole of first through-hole and third through-hole.

According to another embodiment of the invention, the second housing and the base are correspondingly provided with fourth through holes for the inflow of the first air flow, and the third through holes and the first through holes can be inserted by the sampling assembly for sampling.

According to another embodiment of the invention, the sampling assembly comprises a gas sampling tube for sampling cigarette smoke, the volume of the smoke sampling being smaller than the standard draw capacity, the first gas flow being used to compensate for the cigarette smoke required for the sampling by the gas sampling tube.

According to another embodiment of the invention, when the Cambridge filter disc is arranged in the cavity, the Cambridge filter disc divides the cavity into a front cavity and a rear cavity, the front cavity is arranged on the side close to the air inlet hole, the rear cavity is arranged on the side far away from the air inlet hole, the gas sampling tube can be used for collecting all smoke of cigarette smoke when passing through the Cambridge filter disc and being positioned in the front cavity, and the gas sampling tube can be used for collecting gas phase components of the cigarette smoke when not passing through the Cambridge filter disc and being positioned in the rear cavity.

According to another specific embodiment of the invention, the second housing and the base are correspondingly provided with fifth through holes, when the Cambridge filter disc is not arranged in the cavity, the fifth through holes are used for conducting the particle size analyzer, and the first airflow is far greater than the standard suction capacity and is used for diluting cigarette smoke.

According to another embodiment of the invention, the air paths of the fourth and fifth through holes are circulation air paths.

According to another embodiment of the present invention, further comprising: the flexible sleeve, the flexible pad and the fastener, the fastener is used for fixing the flexible sleeve and the flexible pad in the third through hole, and the measuring component or the sampling component can pass through the flexible pad, pass through the flexible sleeve, the first through hole to the chamber or the cigarette to measure or sample.

According to another embodiment of the invention, the end face of the second housing facing the base is provided with a protrusion adapted to the third through hole for positioning and maintaining air tightness when assembled with the base.

According to another embodiment of the present invention, the first housing and the second housing are made of one or two of the following materials: polytetrafluoroethylene, high density polyethylene, polypropylene or an aluminum alloy.

According to another embodiment of the present invention, further comprising: the cigarette clamping assembly is used for clamping cigarettes, the first blocking piece is used for blocking an air inlet hole of the first shell, the second blocking piece is used for blocking an air outlet hole, a fourth through hole and a fifth through hole of the second shell, and the third blocking piece is used for blocking the first through hole of the second shell.

The embodiment of the invention also provides an operation method of the device for capturing cigarette smoke in any specific embodiment, which comprises the following steps:

installing the flexible sleeve, the flexible cushion and the fastener in a third through hole of the base, and installing the base on a smoking machine;

removing a first blocking piece blocked on the air inlet hole, and installing the cigarette clamping assembly on the first shell;

separating the first shell from the second shell, placing a Cambridge filter disc, and then installing and compacting the first shell and the second shell;

removing the second blocking piece and the third blocking piece which are blocked on the exhaust hole and the first through hole respectively, and installing the second shell and the base;

inserting the cigarette into the cigarette holding assembly;

the sleeve and the thermocouple penetrate through the flexible cushion piece and pass through the flexible sleeve and the first through hole to a temperature measuring position, so that temperature measurement is performed in the smoking process of the cigarettes, or the gas sampling tube penetrates through the flexible cushion piece and passes through the flexible sleeve and the first through hole to a sampling position, so that real-time sampling of cigarette smoke is performed in the smoking process of the cigarettes;

and after the smoking process of the cigarettes is finished, taking out the sleeve and the thermocouple or the gas sampling tube, and analyzing the particle phase components of the cigarette smoke trapped on the Cambridge filter.

The embodiment of the invention also provides an operation method of the device for capturing cigarette smoke in any specific embodiment, which comprises the following steps:

installing the flexible sleeve, the flexible cushion and the fastener in a third through hole of the base, and installing the base on a smoking machine;

removing a first blocking piece blocked on an air inlet hole of the first shell, and installing the cigarette clamping assembly on the first shell;

removing the second blocking piece blocked on the exhaust hole, the fourth through hole and the fifth through hole of the second shell and the third blocking piece blocked on the first through hole of the second shell, and installing the second shell and the base;

inserting the cigarette into the cigarette holding assembly;

the first air flow is led into the fourth through hole, the fifth through hole is communicated with the particle size analyzer, and in the smoking process of cigarettes, the online dilution of cigarette smoke and the real-time detection of particle size distribution are carried out.

Drawings

FIG. 1 shows a schematic view of an apparatus for capturing cigarette smoke provided by an embodiment of the present invention;

FIG. 2 shows an exploded view of a device for capturing cigarette smoke provided by an embodiment of the present invention;

FIG. 3 shows a schematic diagram of an apparatus for capturing cigarette smoke for online temperature measurement according to an embodiment of the present invention;

fig. 4 shows a second exploded view of a device for capturing cigarette smoke provided by an embodiment of the present invention;

fig. 5 shows a schematic diagram of an apparatus for capturing cigarette smoke for on-line sampling according to an embodiment of the present invention.

Detailed Description

Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present invention with specific examples. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The following description contains many specific details for the purpose of providing a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention.

The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The inventor researches find that the existing Cambridge filter catcher mainly has the following problems:

(1) If the temperature of the materials or smoke in the cigarette is required to be measured in real time during smoking, a thermocouple is generally required to be inserted into the cigarette, but at the same time, the measurement is required to be performed without damaging the side surface of the cigarette or an appliance, so that the thermocouple is required to be inserted from the axial direction of the cigarette. However, for lit cigarettes, or for cigarettes heated by a combination of a smoking article and a heating article, it is almost impossible to insert a thermocouple from the distal end of the cigarette (the burning end or the appliance end of the electronic cigarette and the heating article), and insertion of a thermocouple from the mouth end of the cigarette is essentially the only option. However, this approach still suffers from the disadvantage that the mouthpiece end is hermetically wrapped in the cigarette holder of the trap during smoking and the thermocouple cannot be inserted. If a thermocouple and a sleeve fitted with the thermocouple are inserted from the tail end of the trap with a vent hole in the center of the trap, the aperture left for the air flow passage may be too narrow, affecting the air flow rate and even the suction capacity.

(2) When the gas phase components of the smoke passing through the Cambridge filter disc are trapped and analyzed, the gas phase smoke is pumped into the lumen of the gas phase smoke by a suction engine of a smoking machine and then pushed into a gas bag for collection, and some analysis adopts a mode of connecting a trapping (enriching) system in series in an airflow path between a trap and the suction engine, but the main problems of the modes are that the pipeline of the trap connected to the suction engine and the pipeline of the suction engine connected to the gas bag are generally long, and certain components in the gas phase are easy to be condensed or chemically changed; or, the series connection of the trapping systems often results in an increase in suction resistance, changing the airflow velocity or suction capacity specified by the standard, and causing distortion of the detection results.

In order to solve the above problems, referring to fig. 1 in combination with fig. 2, the present invention provides an apparatus for capturing cigarette smoke, comprising: the first shell 1, the first shell 1 is provided with an air inlet 11 for the inflow of cigarette smoke; the second casing 2, the first casing 1 and the second casing 2 can form a chamber 100 after being matched, the chamber 100 can be used for placing a Cambridge filter 3, and the Cambridge filter 3 is used for capturing grain phase components of cigarette smoke. The second casing 2 is provided with an exhaust hole 22 and a first through hole 21 at intervals, the exhaust hole 22 is used for discharging cigarette smoke (for example, the exhaust hole 22 is communicated with a smoking machine to discharge the cigarette smoke), and the first through hole 21 corresponds to the air inlet 11 and can be used for inserting a measuring assembly 200 (shown in fig. 3) for measuring.

It should be noted that, a person skilled in the art may consider whether to place the cambridge filter 3 in the chamber 100 according to the detection means or the detection purpose. For example, if it is not desired to analyze the particulate phase component of the cigarette smoke, or to analyze the particulate phase component of the cigarette smoke by means of Cambridge filter 3, or to filter the particulate phase component of the smoke by Cambridge filter 3, then Cambridge filter 3 is not placed in chamber 100; if it is desired to analyze the particulate phase component of the cigarette smoke by means of Cambridge filter 3 or if Cambridge filter 3 is desired to filter the particulate phase component of the smoke, cambridge filter 3 is placed in chamber 100 to trap or filter the particulate phase component of the cigarette smoke. At this time, under the suction action of the smoking machine (for example, through the suction system of the smoking machine), the cigarette smoke enters the chamber 100 from the air inlet 11 on the first housing 1, and after passing through the Cambridge filter 3, the particle phase components of the cigarette smoke are trapped by the Cambridge filter 3, and the gas phase components of the cigarette smoke are discharged from the air outlet 22 on the second housing 2.

According to the device for trapping cigarette smoke provided by the invention, since the measuring assembly 200 can be inserted from the first through hole 21 of the second housing 2 without being inserted from the exhaust hole 22 of the second housing 2 as in the prior art, it is possible to ensure that additional measurements (e.g. temperature measurements) of cigarette smoke or cigarette materials are carried out on line under standard smoking conditions (e.g. as specified in the relevant standards with reference to GB/T16450, GB/T19609, ISO 20768).

In some possible embodiments, with continued reference to fig. 1 in combination with fig. 2 and 3, the apparatus for capturing cigarette smoke further comprises: the cigarette clamping assembly 7, the first blocking piece 51, the second blocking piece 52 and the third blocking piece 53, the cigarette clamping assembly 7 is used for clamping a cigarette 500 (shown in fig. 3), the first blocking piece 51 is used for blocking the air inlet hole 11, the second blocking piece 52 is used for blocking the air outlet hole 22, and the third blocking piece 53 is used for blocking the first through hole 21.

As shown in fig. 1, in the case of not using the device, the first blocking piece 51 cooperates with the first housing 1 to block the air intake hole 11, the second blocking piece 52 and the third blocking piece 53 cooperate with the second housing 2 to block the air exhaust hole 22 and the first through hole 21, respectively, and the cigarette holder assembly 7 does not cooperate with the first housing 1; as shown in fig. 3, in the case that the device is to be used, the first blocking piece 51 blocked on the air inlet hole 11 is removed, and the cigarette holder assembly 7 is replaced so that the cigarette holder assembly 7 is engaged with the first housing 1.

In some possible embodiments, the cigarette holder assembly 7 is a labyrinth-type cigarette holder assembly. In other possible embodiments, the cigarette holder assembly 7 may also be other forms of holder assembly, not specifically limited herein, as long as it is capable of holding a cigarette and maintaining air tightness.

In some possible embodiments, the device for capturing cigarette smoke further comprises: the base 4, one end 43 of the base 4 can be adapted to the second housing 2, and the other end 44 of the base 4 can be adapted to a smoking machine (not shown). For example, the smoking machine is provided with a base which communicates with the air path of the smoking engine of the smoking machine, and the other end 44 of the base 4 is adapted to the base. The base 4 is provided with a second through hole 42 and a third through hole 41 corresponding to the exhaust hole 22 and the first through hole 21, respectively. Through setting up base 4, can improve the suitability between device and the smoking machine, in other words, can select suitable first casing 1 and the size specification of second casing 2 according to the experimental use purpose of difference, then through the base 4 with the adaptation of second casing 2, install it on the smoking machine.

In some possible embodiments, referring to fig. 2 in combination with fig. 3 and 5, the apparatus for capturing cigarette smoke further comprises: a flexible sleeve 61, a flexible pad 62 and a fastener 63. The fastener 63 is used to secure the flexible sleeve 61 and the flexible pad 62 within the third through-hole 41, and the measurement assembly 200 (thermocouple 201 and sleeve 202 as shown in fig. 3) or sampling assembly 400 (gas sampling tube as shown in fig. 5) can be passed through the flexible pad 62, through the flexible sleeve 61, the first through-hole 21, and into the cigarette 500 or chamber 100 for measurement or sampling.

By providing the flexible sleeve 61, the rigid friction between the measurement assembly 200 or the sampling assembly 400 and the second housing 2 can be reduced, thereby improving the service life. By providing the flexible pad 62, it can be ensured that the insertion of the measuring assembly 200 or the sampling assembly 400 into the third through hole 41 still maintains the air tightness. By providing the fasteners 63, it can be ensured that the flexible sleeve 61 and the flexible pad 62 are not removed or displaced together during removal of the measurement assembly 200 or the sampling assembly 400. The flexible sleeve 61 is axially restrained by the second housing 2 and the fastener 63, and thus is not easily displaced axially. The flexible pad 62 is axially restrained by the flexible sleeve 61 and the fastener 63, and thus is not easily displaced axially.

In some possible embodiments, referring to fig. 2 in combination with fig. 1, the end surface of the second housing 2 facing the base 4 is provided with a protrusion 23 adapted to the third through hole 41 for positioning when assembled with the base 4 and improving the air tightness between the second housing 2 and the base 4.

In some possible embodiments, referring to fig. 2, the first, second and third blocking members 51, 52 and 53 are sleeved with flexible sleeves 61 to reduce rigid collision between the first blocking member 51 and the first housing 1, and between the second and third blocking members 52 and 53 and the second housing 2, thereby improving service life while ensuring air tightness.

In some possible embodiments, O-seals 8 are provided on the cigarette holder assembly 7, the first housing 1 and the second housing 2 to ensure air tightness.

In some possible embodiments, the O-ring seal 8 and the flexible sleeve 61 are each made of a chemically inert material that resists corrosion and does not readily swell to ensure gas tightness or leakage protection, such as perfluoroether rubber (FFKM).

In some possible embodiments, referring to fig. 3, the measurement assembly 200 includes a thermocouple 201 and a sleeve 202, the sleeve 202 is inserted with the thermocouple 201 inserted, and the thermocouple 201 is used to measure the temperature of the cigarette smoke or the cigarette material. By providing the sleeve 202, the rigidity of the thermocouple 201 is enhanced, thereby facilitating the insertion of the thermocouple 201 while improving the accuracy of the thermocouple 201 to the temperature measurement location 300.

When in use, the thermocouple 201 can be inserted into the sleeve 202, then the flexible pad 62 is inserted together with the sleeve 202, and the temperature is measured by passing through the flexible sleeve 61 and the first through hole 21 to the temperature measuring position 300; the sleeve 202 may be inserted into the flexible pad 62, passed through the flexible sleeve 61 and the first through hole 21 to the temperature measuring position 300, and then the thermocouple 201 may be inserted into the sleeve 202 to the temperature measuring position 300 to measure the temperature.

The cigarette smoke generated by the cigarette 500 enters the chamber 100 from the air inlet hole 11 of the first housing 1, is discharged through the air outlet hole 22 of the second housing and the second through hole 42 of the base 4 (as shown in fig. 3, the suction air flow), and the thermocouple 201 can be used for measuring the surface temperature of the cigarette smoke or materials in the cigarette 500 or measuring the temperature of aerosol at the outlet of the mouth end of the cigarette 500. It should be noted that the temperature measurement location 300 may be any point within the length of the cigarette 500, or may be any point within the device away from the mouth end of the cigarette 500 (e.g., the side of the chamber 100 near the mouth end of the cigarette 300, hereinafter referred to as the front chamber).

It should be noted that, in the case where the chamber 100 formed by the first housing 1 and the second housing 2 has a small volume (for example, as shown in fig. 1 to 3), the cambridge filter 3 needs to be removed from the device and then placed in another device for extraction and analysis; when the chamber 100 formed by the first housing 1 and the second housing 2 has a large volume (for example, as shown in fig. 4), the cambridge filter 3 does not need to be taken out from the device, and the extraction solvent can be directly added into the chamber 100 to extract and analyze the particulate phase component of the cigarette smoke trapped by the cambridge filter 3, so that the operation error can be sufficiently eliminated, the environmental impact can be prevented, the experimental resources can be saved, and the experimental efficiency can be improved.

In some possible embodiments, with reference to fig. 2, the diameter of the inlet 11 and outlet 22 holes is at least 4mm to ensure a proper air flow rate, avoiding that the standard suction capacity is affected by too little air flow rate (for example 35ml or 55ml suction capacity in two seconds)

In some possible embodiments, the diameter of the air inlet hole 11, the first through hole 21 and the third through hole 41 is at least 4mm, preferably in the range of 4mm to 8mm. In the present embodiment, the diameter of the air intake hole 11, the first through hole 21, and the third through hole 41 is 8mm.

In some possible embodiments, referring to fig. 5 in combination with fig. 2, the second housing 2 and the base 4 are correspondingly provided with a fourth through hole 45 for the inflow of the first air flow, and the third through hole 41 and the first through hole 21 can be inserted by the sampling assembly 400 for sampling. In this embodiment, the sampling assembly 400 includes a gas sampling tube for sampling cigarette smoke.

When Cambridge filter 3 is disposed in chamber 100, cambridge filter 3 divides chamber 100 into a front chamber and a rear chamber. The front chamber is located on the side close to the air inlet hole 11, and the rear chamber is located on the side far away from the air inlet hole 11. When the sampling assembly 400 is positioned in the front chamber through the Cambridge filter 3, it can be used to collect all of the cigarette smoke, "all smoke" can be understood to include both particulate and gas phases. When the sampling assembly 400 is positioned in the rear chamber (as shown in fig. 5) without passing through the cambridge filter 3, it can be used to collect the gas phase components of the cigarette smoke.

Therefore, the sampling assembly 400 can directly sample the cigarette smoke (such as the gas phase sampling of the cigarette smoke shown in fig. 5) from the chamber 100, so that the technical condition that the on-line sampling is easier can be provided on the premise of not changing the standard suction condition, the change of dead volume to the composition and concentration of the cigarette smoke is reduced, and the detection accuracy is improved.

In some possible embodiments, the volume of smoke samples is less than the standard draw capacity, and the first airflow is used to compensate for cigarette smoke required for gas sampling tube sampling. The synchronous gas sampling process under standard pumping conditions is ensured by controlling the flow rate and volume of the first gas stream to be equal to the flow rate and volume of the gas sampling tube samples. In other possible embodiments, the volume of the first gas stream may also be greater than the volume sampled by the gas sampling tube, at which time the smoking machine may be adjusted to ensure a standard draw capacity. If the standard draw capacity is still not met by the tuned smoking machine, additional draw equipment is also required to ensure the standard draw capacity.

It should be noted that "standard draw volume" is understood to mean the volume of gas that each mouth escapes from the mouth end of the cigarette and enters the chamber 100 through the inlet aperture 11 under the draw of the smoking machine.

The following describes in detail, with reference to fig. 1, 2 and 3, the operation method of the device for capturing cigarette smoke, which requires on-line temperature measurement or on-line sampling. The operation method of the device comprises the following steps:

step S1, installing a flexible sleeve 61, a flexible cushion 62 and a fastener 63 in a third through hole 41 of a base 4, and installing the base 4 on a smoking machine;

s2, removing a first blocking piece 51 blocked on the air inlet hole 11, and installing the cigarette clamping assembly 7 on the first shell 1;

s3, separating the first shell 1 from the second shell 2, placing the Cambridge filter 3, and then installing and compacting the first shell 1 and the second shell 2;

step S4, removing the second blocking member 52 and the third blocking member 53 respectively blocked on the air vent 22 and the first through hole 21, and installing the second housing 2 and the base 4, so as to ensure that each through hole on the second housing 2 corresponds to each through hole on the base 4.

S5, inserting the cigarettes 500 into the cigarette clamping assembly 7;

step S6, the sleeve 202 and the thermocouple 201 penetrate through the flexible cushion 62, pass through the flexible sleeve 61 and the first through hole 21 to the temperature measuring position 300, and measure the temperature in the smoking process of the cigarette 500. As mentioned above, the sleeve 202 may be first passed through the flexible pad 62, passed through the flexible sleeve 61 and the first through hole 21 to the temperature measuring position 300 of the cigarette 500 for measuring the temperature, and then the thermocouple 201 is inserted into the sleeve 202 to the temperature measuring position 300; it is also possible to insert the thermocouple 201 into the sleeve 202, then pass through the flexible pad 62 together with the sleeve 202, and pass through the flexible sleeve 61 and the first through hole 21 to the temperature measuring position 300 for measuring the temperature. Alternatively, the gas sampling tube is passed through the flexible pad 62, through the flexible sleeve 61, the first through hole 21 to a sampling location (not shown) where the sampling of real-time cigarette smoke is performed during smoking of the cigarette (e.g., the collected smoke may be used for on-line constituent analysis of gas chromatography). It should be noted that the sampling position may be any point in the chamber 100 (i.e., the front chamber or the rear chamber hereinafter)

And S7, after the smoking process of the cigarettes is finished, taking out the sleeve 202 and the thermocouple 201 or the gas sampling tube, and analyzing the particle phase components of the cigarette smoke trapped on the Cambridge filter 3.

In some possible embodiments, a fifth through hole (not shown in the figure) is correspondingly provided on the second housing 2 and the base 4, and the fifth through hole is used for conducting the particle size analyzer when the cambridge filter 3 is not disposed in the chamber 100. The first airflow is much greater than the standard draw capacity for diluting cigarette smoke. The dilution of cigarette smoke reduces the collision among molecules, thereby ensuring the analysis accuracy of the particle size analyzer. The flow rate and volume of the fifth through hole are controlled to be equal to those of the first air flow to ensure the standard suction capacity.

The following describes in particular the operation of the device for trapping cigarette smoke, which requires simultaneous real-time detection of the particle size distribution. The operation method of the device comprises the following steps:

step S10, installing the flexible sleeve 61, the flexible cushion 62 and the fastening piece 63 in the third through hole 41 of the base 4, and installing the base 4 on a smoking machine (not shown in the figure);

step S20, removing a first blocking piece 51 blocked on the air inlet hole 11 of the first shell 1, and installing the cigarette clamping assembly 7 on the first shell 1;

step S30, removing the second blocking member 52 blocked on the air vent 22, the fourth through hole 45 and the fifth through hole (not shown) of the second housing 2 and the third blocking member 53 blocked on the first through hole 21 of the second housing 2, and mounting the second housing 2 and the base 4;

step S40, inserting the cigarettes 500 into the cigarette clamping assembly 7;

step S50, the first air flow is led into the fourth through hole 45, the fifth through hole is communicated with the particle size analyzer, and in the smoking process of the cigarette 500, the online dilution of the cigarette smoke and the real-time detection of the particle size distribution are carried out.

In some possible embodiments, the fourth through hole 45 and the fifth through hole (not shown in the figure) are circulation air paths, so as to further facilitate ensuring the synchronization and consistency of the flow rate and volume. In other words, the first air flow flows into the chamber 100 from the fourth through hole 45 and flows out through the fifth through hole, thereby forming a circulation air path (the fourth through hole 45 is in and the fifth through hole is out).

In some possible embodiments, the circulating gas path may be connected in series or bypass the particle size analyzer, and a gas purifier and a gas circulating pump may be connected in series after the particle size analyzer, where the gas purifier is used to avoid or reduce pollution of the gas circulating pump and the gas guiding pipeline behind the gas circulating pump, and further reduce abnormal influence of the gas that flows back to the chamber 100 on components and concentration in the flue gas entering the chamber 100 from the gas inlet 11.

In some possible embodiments, the gas circulation pump is capable of providing a constant flow rate of gas flow, thereby ensuring stability of the dilution ratio.

In some possible embodiments, the first housing 1 and the second housing 2 are made of a chemically inert material that resists corrosion. For example, one or two of the following materials are selected: polytetrafluoroethylene, high density polyethylene, polypropylene or an aluminum alloy. The polytetrafluoroethylene has good chemical inertness, is not easy to react with cigarette smoke or an extraction solvent, has high surface density, and has less residue adhesion and is easy to wipe and clean, so that a person skilled in the art can select materials according to the experimental purpose.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the invention with reference to specific embodiments, and it is not intended to limit the practice of the invention to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present invention.

Claims (15)

1. An apparatus for capturing cigarette smoke, comprising:

the first shell is provided with an air inlet hole for the smoke of the cigarettes to flow in;

the first shell and the second shell can form a cavity after being matched, the cavity can be used for placing a Cambridge filter disc, the Cambridge filter disc is used for capturing grain phase components of cigarette smoke, an exhaust hole and a first through hole are formed in the second shell at intervals, the exhaust hole is used for discharging the cigarette smoke, the first through hole corresponds to the air inlet hole, and a measuring assembly can be inserted for measurement.

2. The apparatus for capturing cigarette smoke according to claim 1, wherein the measuring assembly comprises a thermocouple and a sleeve into which the thermocouple is inserted, the thermocouple being for measuring the temperature of the cigarette smoke or the cigarette material.

3. The apparatus for trapping cigarette smoke according to claim 1, wherein the diameter of said air inlet holes and said air outlet holes is at least 4mm.

4. A device for capturing cigarette smoke according to claim 2 or 3, further comprising: the base, the one end of base can with the adaptation of second casing, the other end of base can with smoking machine looks adaptation, set up respectively on the base with exhaust hole with the corresponding second through-hole of first through-hole and third through-hole.

5. The device for capturing cigarette smoke according to claim 4, wherein a fourth through hole into which the first air flow flows is correspondingly formed in the second housing and the base, and the third through hole and the first through hole can be inserted by a sampling assembly for sampling.

6. The apparatus for capturing cigarette smoke according to claim 5, wherein the sampling assembly comprises a gas sampling tube for sampling the cigarette smoke, the smoke sampling volume being less than a standard draw capacity, the first gas flow being for compensating for the cigarette smoke required for sampling by the gas sampling tube.

7. The apparatus for capturing cigarette smoke of claim 6, wherein when said cambridge filter is disposed in said chamber, said cambridge filter divides said chamber into a front chamber and a rear chamber, said front chamber being on a side of said intake aperture and said rear chamber being on a side of said intake aperture, said gas sampling tube being disposed through said cambridge filter and being disposed in said front chamber for collecting all of the smoke of said cigarette smoke, and said gas sampling tube being disposed not through said cambridge filter and being disposed in said rear chamber for collecting the gas phase components of said cigarette smoke.

8. The device for capturing cigarette smoke of claim 7, wherein a fifth through hole is correspondingly arranged on the second shell and the base, when the Cambridge filter is not arranged in the cavity, the fifth through hole is used for conducting a particle size analyzer, and the first airflow is far greater than the standard suction capacity and is used for diluting the cigarette smoke.

9. The apparatus for trapping cigarette smoke according to claim 8, wherein the air paths of the fourth through hole and the fifth through hole are circulation air paths.

10. The apparatus for capturing cigarette smoke of claim 9, further comprising: the flexible sleeve, the flexible pad piece and the fastener, the fastener is used for with the flexible sleeve with the flexible pad piece is fixed in the third through-hole, the measurement subassembly or the sampling subassembly can pass the flexible pad piece, through flexible sleeve, first through-hole extremely cavity or cigarette is in order to measure or sample.

11. The device for capturing cigarette smoke according to claim 10, wherein the end face of the second housing facing the base is provided with a convex part matched with the third through hole for positioning and maintaining air tightness when the second housing is assembled with the base.

12. The device for capturing cigarette smoke according to claim 1, wherein the first housing and the second housing are made of one or two of the following materials: polytetrafluoroethylene, high density polyethylene, polypropylene or an aluminum alloy.

13. The apparatus for capturing cigarette smoke of claim 8, further comprising: the cigarette clamping assembly is used for clamping cigarettes, the first blocking piece is used for blocking the air inlet hole of the first shell, the second blocking piece is used for blocking the air outlet hole, the fourth through hole and the fifth through hole of the second shell, and the third blocking piece is used for blocking the first through hole of the second shell.

14. A method of operating a device for capturing cigarette smoke as claimed in any one of claims 1 to 13, comprising:

installing the flexible sleeve, the flexible cushion and the fastening piece in a third through hole of the base, and installing the base on a smoking machine;

removing a first blocking piece blocked on the air inlet hole, and installing a cigarette clamping assembly on the first shell;

separating the first shell from the second shell, placing the Cambridge filter disc, and then installing and compacting the first shell and the second shell;

removing a second blocking piece and a third blocking piece which are blocked on the exhaust hole and the first through hole respectively, and installing the second shell and the base;

inserting a cigarette into the cigarette holding assembly;

the sleeve and the thermocouple penetrate through the flexible cushion piece and pass through the flexible sleeve and the first through hole to a temperature measuring position, so that temperature measurement is performed in the smoking process of the cigarettes, or a gas sampling tube penetrates through the flexible cushion piece and passes through the flexible sleeve and the first through hole to a sampling position, so that real-time sampling of cigarette smoke is performed in the smoking process of the cigarettes;

and after the smoking process of the cigarettes is finished, taking out the sleeve and the thermocouple or the gas sampling tube, and analyzing the particle phase components of the cigarette smoke trapped on the Cambridge filter.

15. A method of operating a device for capturing cigarette smoke as claimed in any one of claims 1 to 13, comprising:

installing the flexible sleeve, the flexible cushion and the fastening piece in a third through hole of the base, and installing the base on a smoking machine;

removing a first blocking piece blocked on the air inlet hole of the first shell, and installing a cigarette clamping assembly on the first shell;

removing a second blocking piece blocked on the exhaust hole, the fourth through hole and the fifth through hole of the second shell and a third blocking piece blocked on the first through hole of the second shell, and installing the second shell and the base;

inserting a cigarette into the cigarette holding assembly;

and leading the first air flow into the fourth through hole, and conducting the fifth through hole to a particle size analyzer, wherein in the smoking process of the cigarettes, on-line dilution of cigarette smoke and real-time detection of particle size distribution are carried out.