A cigarette combustion characteristic parameter and smoke release testing device and testing method

Abstract

The present application discloses a kind of cigarette combustion characteristic parameter and flue gas release test equipment and test method, it is related to cigarette combustion test technical field.Cigarette combustion characteristic parameter and flue gas release test equipment include rack, double turntable device, control unit, first detection device and second detection device, several cigarette suction devices are all with clamping mechanism, suction pump and suction pipeline, suction pipeline one end is connected with suction pump, other end clamping mechanism inside is connected, second detection device includes multiple detection pieces and with multiple detection pieces one-to-one corresponding docking pipeline, one end of multiple docking pipelines is connected with the middle part of corresponding suction pipeline, detection piece is carbon monoxide detector or aerosol particle size spectrometer, control unit includes suction control module and detection control module, can synchronously obtain cigarette combustion characteristic parameter and flue gas carbon monoxide release, or synchronously obtain cigarette combustion characteristic parameter and flue gas aerosol particle size distribution, detection efficiency is higher.

Description

Technical Field

[0001] This invention relates to the field of cigarette combustion testing technology, and in particular to a testing device and method for testing cigarette combustion characteristic parameters and smoke emissions. Background Technology

[0002] The combustion characteristic parameters of cigarettes (including combustion cone morphology and symmetry, temperature field distribution, dynamic absorption resistance and pressure drop, etc.) and the carbon monoxide (CO) emission or aerosol particle size distribution in the flue gas are core indicators for evaluating cigarette quality, analyzing combustion mechanisms, guiding formulation design and implementing quality control.

[0003] Currently, the determination of the above-mentioned parameters relies on separate dedicated equipment: combustion characteristic parameters are obtained through a dedicated combustion characteristic measurement device; carbon monoxide release in flue gas is determined by the gas phase detection unit of the smoke extraction machine, which is independently sampled and analyzed according to the standard extraction procedure; and flue gas aerosol particle size distribution is determined by a separate aerosol detection device, which is sampled and analyzed according to another set of standard extraction procedures.

[0004] However, this split-type detection mode has the following significant drawbacks:

[0005] First, the data correlation is poor. Since the combustion characteristic parameters and the measurement of flue gas emissions (CO or aerosols) cannot be completed simultaneously on the same cigarette, it is difficult to establish a real-time correspondence between the two, which restricts the in-depth analysis of the intrinsic relationship between the combustion mechanism and release behavior of cigarettes.

[0006] Secondly, the testing efficiency is low. The serial operation of multiple devices and multiple processes is cumbersome and time-consuming, making it difficult to meet the testing needs of rapid formula iteration and high-throughput quality control.

[0007] Therefore, there is an urgent need for testing equipment and methods for cigarette combustion characteristic parameters and flue gas emissions to solve the above problems. Summary of the Invention

[0008] The first objective of this invention is to provide a device for testing the combustion characteristics of cigarettes and the emissions of smoke, so as to solve the problem in the prior art that it is impossible to simultaneously obtain the combustion characteristic parameters of cigarettes and the amount of carbon monoxide released from the smoke on the same cigarette, or simultaneously obtain the combustion characteristic parameters of cigarettes and the particle size distribution of smoke aerosols.

[0009] The second objective of this invention is to provide a method for testing the combustion characteristics of cigarettes and the emissions from flue gas, which meets the need to simultaneously obtain the combustion characteristic parameters of cigarettes and the amount of carbon monoxide released from flue gas, or to simultaneously obtain the combustion characteristic parameters of cigarettes and the particle size distribution of flue gas aerosols, with high testing efficiency and high detection accuracy.

[0010] To achieve this objective, the present invention adopts the following technical solution:

[0011] A device for testing cigarette combustion characteristics and smoke emissions includes a frame, a dual-rotor device, a control unit, a first detection device, and a second detection device. The dual-rotor device is mounted on the frame and has several independently controlled cigarette inhalation devices. Each cigarette inhalation device has a clamping mechanism, a suction pump, and a suction pipeline. One end of the suction pipeline is connected to the suction pump, and the other end is connected to the inside of the clamping mechanism. The first detection device includes an image acquisition unit, a pressure detection unit, and a temperature measurement unit. The second detection device includes multiple detection elements and multiple... Each of the aforementioned detection devices has a corresponding connecting pipe, and multiple connecting pipes are configured to correspond one-to-one with multiple suction pipes. One end of each of the multiple connecting pipes is connected to the middle of the corresponding suction pipe, and the other end of each of the multiple connecting pipes is connected to the corresponding detection device. The detection device is a carbon monoxide detector or an aerosol particle size analyzer. The control unit includes a suction control module and a detection control module. The suction control module is signal-connected to several of the cigarette smoking devices. The image acquisition unit, the pressure detection unit, and the temperature measurement unit are all signal-connected to the detection control module.

[0012] In some embodiments, the second detection device further includes a plurality of constant temperature chambers, which are respectively installed in the middle of a plurality of connecting pipelines.

[0013] In some embodiments, the connecting pipeline includes a first pipeline and a second pipeline. One end of the first pipeline is connected to the middle of the corresponding suction pipeline, and the other end of the first pipeline is connected to the inlet of the corresponding constant temperature chamber. One end of the second pipeline is connected to the outlet of the corresponding constant temperature chamber, and the other end of the second pipeline is connected to the corresponding detection element.

[0014] In some embodiments, the temperature range of the constant temperature chamber is 35°C to 45°C.

[0015] In some embodiments, a diluent is installed inside the thermostatic cavity.

[0016] In some embodiments, the second detection device further includes a protective cover, the protective cover having a plurality of receiving holes, the plurality of receiving holes corresponding one-to-one with a plurality of connecting pipes, and the connecting pipes passing through the corresponding receiving holes.

[0017] In some embodiments, the dual-disc device includes a cigarette rotating disk and a fixed detection annular disk arranged opposite each other. The fixed detection annular disk has a detection area. A plurality of cigarette smoking devices are disposed on the cigarette rotating disk. The axial direction of the plurality of cigarette smoking devices is parallel to the axial direction of the cigarette rotating disk. Each cigarette smoking device is capable of reciprocating along its own axial direction. The clamping mechanism is capable of clamping cigarettes of different diameters.

[0018] In some embodiments, the detection element is detachably connected to the cigarette rotating disk.

[0019] In some embodiments, the dual-disc device includes a cigarette rotating disk and a fixed detection annular disk arranged opposite each other. The fixed detection annular disk has a detection area. A plurality of cigarette smoking devices are disposed on the cigarette rotating disk. The axial direction of the plurality of cigarette smoking devices is parallel to the axial direction of the cigarette rotating disk. Each cigarette smoking device is capable of reciprocating along its own axial direction. The clamping mechanism is capable of clamping cigarettes of different diameters.

[0020] A method for testing the combustion characteristics and emissions of cigarettes, using the aforementioned testing equipment for cigarette combustion characteristics and emissions, includes the following:

[0021] S1. Install the carbon monoxide detector or aerosol particle size analyzer on the cigarette rotating disk of the dual-rotor device according to the detection type.

[0022] S2. Load multiple cigarettes into the clamping mechanism of multiple cigarette smoking devices;

[0023] S3. Ignite multiple cigarettes, and after ignition, the cigarettes enter a smoldering state;

[0024] S4. Control one of the cigarette smoking devices to drive the cigarette held by itself into the detection area;

[0025] S5. The image acquisition unit, pressure detection unit and temperature measurement unit are all turned on. After a first preset time, the suction control module controls the cigarette suction device to suction the cigarette located in the detection area for a second preset time.

[0026] S6. Control the cigarette inhalation device to drive the cigarette held by itself out of the detection area;

[0027] S7. Sequentially control the remaining cigarette smoking devices to drive the cigarettes they hold into the detection area, and repeat steps S5-S6 until all the cigarettes have been detected.

[0028] S8, output the sequence of cigarette combustion characteristic parameters, carbon monoxide release data, or aerosol particle size monitoring data for each workstation.

[0029] The beneficial effects of this invention are:

[0030] This invention provides a testing device for cigarette combustion characteristics and smoke emissions, including a frame, a dual-rotor device, a control unit, a first detection device, and a second detection device. The dual-rotor device is mounted on the frame and has several independently controlled cigarette inhalation devices. Each inhalation device has a clamping mechanism, a suction pump, and a suction pipeline. One end of the suction pipeline is connected to the suction pump, and the other end is connected to the inside of the clamping mechanism. The first detection device includes an image acquisition unit, a pressure detection unit, and a temperature measurement unit. The second detection device includes... The system comprises multiple detection devices and corresponding connecting pipes, each corresponding to a specific suction pipe. One end of each connecting pipe is connected to the middle of its corresponding suction pipe, and the other end is connected to a corresponding detection device. The detection devices are either carbon monoxide detectors or aerosol particle size analyzers. The control unit includes a suction control module and a detection control module. The suction control module is signal-connected to several cigarette suction devices. An image acquisition unit, a pressure detection unit, and a temperature measurement unit are all signal-connected to the detection control module. This setup allows for the simultaneous acquisition of cigarette combustion characteristic parameters and carbon monoxide release from the smoke, or simultaneously acquiring cigarette combustion characteristic parameters and aerosol particle size distribution from the smoke. A real-time correlation between the combustion process and released products is established on the same cigarette, facilitating a deeper understanding of the cigarette combustion mechanism. It also avoids the cumbersome and time-consuming separate detection operations of existing technologies, making it suitable for meeting the detection needs of cigarette manufacturer R&D, quality control, and combustion mechanism research, with high detection efficiency.

[0031] This invention also provides a method for testing the combustion characteristics and emissions of cigarettes. Using the above-mentioned cigarette combustion characteristic parameters and emissions testing equipment, the method includes: S1, installing a carbon monoxide detector or aerosol particle size analyzer on the cigarette rotating disk of a dual-disc device according to the detection type; S2, loading multiple cigarettes into the clamping mechanism of multiple cigarette inhalation devices; S3, igniting the multiple cigarettes, after which the cigarettes enter a smoldering state; S4, controlling one of the cigarette inhalation devices to move itself, clamping the cigarette, into the detection area; S5, enabling image acquisition. The unit, pressure detection unit, and temperature measurement unit are all in the open state. After a first preset time, the suction control module controls the cigarette suction device to suction the cigarette located in the detection area for a second preset time. S6: Control the cigarette suction device to pull itself out of the detection area while holding the cigarette. S7: Sequentially control the remaining cigarette suction devices to pull themselves into the detection area while holding the cigarette, and repeat steps S5-S6 until all cigarettes have been detected. S8: Output the cigarette combustion characteristic parameter sequence, carbon monoxide release data, or aerosol particle size monitoring data for each station. Through the above testing method, using the above cigarette combustion characteristic parameter and flue gas release testing equipment, the cigarette combustion characteristic parameters and flue gas carbon monoxide release amount are obtained simultaneously, or the cigarette combustion characteristic parameters and flue gas aerosol particle size distribution are obtained simultaneously. This satisfies the requirement of establishing a real-time correlation between the combustion process and release products on the same cigarette, which facilitates a deeper understanding of the cigarette combustion mechanism and has high detection accuracy. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a cigarette combustion characteristics and flue gas emission testing device provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of a cigarette rotating disc and a cigarette suction device of a cigarette combustion characteristics and smoke emission testing equipment provided in an embodiment of the present invention.

[0035] Figure 3 This is a schematic diagram of the structure of a cigarette suction device provided in an embodiment of the present invention for testing the combustion characteristics and smoke emissions of a cigarette.

[0036] Figure 4This is a schematic diagram of the clamping mechanism of a cigarette combustion characteristics and flue gas emission testing device provided in an embodiment of the present invention.

[0037] In the picture:

[0038] 1. Frame; 2. Cigarette rotating disc; 3. Fixed detection ring disc; 4. Cigarette suction device; 41. Clamping mechanism; 411. Arc-shaped clamp; 412. Elastic tightening component; 413. Conical elastic sealing sleeve; 414. Support component; 415. Conical sealing ring; 416. Elastic connecting component; 42. Support body; 43. Drive mechanism; 44. Suction pump; 45. Suction pipeline; 46. Front cigarette holder ; 47. Slider; 48. Front limit sensor; 49. Suction interface; 5. Isolation cover; 51. First cover; 52. Second cover; 521. Shell; 5211. Smoke vent; 522. Sliding door; 6. Lighting component; 7. Camera; 8. Temperature measuring unit; 9. Detection component; 10. Connecting pipeline; 101. First pipeline; 102. Second pipeline; 20. Protective cover; 30. Constant temperature chamber; 100. Cigarette. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0040] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0043] This embodiment provides a testing device for cigarette combustion characteristic parameters and flue gas emissions to solve the problems of low detection efficiency and reduced detection accuracy in the prior art.

[0044] like Figures 1-4 As shown, in this embodiment, the cigarette combustion characteristic parameters and smoke emission testing equipment includes a frame 1, a dual-rotor device, a control unit, a first detection device, and a second detection device. The dual-rotor device is mounted on the frame 1 and has several independently controlled cigarette suction devices 4. Each cigarette suction device 4 has a clamping mechanism 41, a suction pump 44, and a suction pipe 45. One end of the suction pipe 45 is connected to the suction pump 44, and the other end is connected to the inside of the clamping mechanism 41. The first detection device includes an image acquisition unit, a pressure detection unit, and a temperature measurement unit 8. The second detection device includes... Multiple detection elements 9 and corresponding connecting pipes 10 are provided. The multiple connecting pipes 10 are also connected to multiple suction pipes 45. One end of each connecting pipe 10 is connected to the middle of the corresponding suction pipe 45, and the other end of each connecting pipe 10 is connected to the corresponding detection element 9. The detection element 9 is a carbon monoxide detector or an aerosol particle size analyzer. The control unit includes a suction control module and a detection control module. The suction control module is connected to several cigarette smoking devices 4. The image acquisition unit, pressure detection unit, and temperature measurement unit 8 are all connected to the detection control module. Through the above settings, the combustion characteristic parameters of cigarette 100 and the carbon monoxide release in the flue gas can be acquired simultaneously, or the combustion characteristic parameters of cigarette 100 and the aerosol particle size distribution in the flue gas can be acquired simultaneously. A real-time correlation between the combustion process and the released products can be established on the same cigarette, which facilitates a deeper understanding of the combustion mechanism of cigarette 100. It also avoids the problems of cumbersome and time-consuming separate detection operations in the existing technology, which can meet the detection needs of cigarette 100 formulation development, quality control and combustion mechanism research, and has high detection efficiency.

[0045] In this embodiment, there is no need to control the carbon monoxide detector or aerosol particle size analyzer. When the flue gas passes through the first pipeline, it can enter the connecting pipeline and then enter the docked carbon monoxide detector or aerosol particle size analyzer to detect the amount of carbon monoxide released or the distribution of aerosol particles in the flue gas. The carbon monoxide detector or aerosol particle size analyzer starts working automatically from the start of the suction.

[0046] Furthermore, the detection component 9 is detachably connected to the dual-rotor device, which facilitates disassembly and assembly, and allows for easy replacement of the carbon monoxide detector or aerosol particle size analyzer according to different detection needs.

[0047] In some embodiments, the second detection device further includes multiple thermostatic chambers 30, which are respectively installed in the middle of multiple connecting pipelines 10. It is understood that the thermostatic chambers 30 can maintain a constant temperature for the incoming flue gas. Since the flue gas contains a large amount of water vapor, it easily cools and condenses into water in the connecting pipelines. Acidic gases such as carbon monoxide dissolve in the condensate, leading to severely low measurement values. By using the thermostatic chambers 30 to heat the flue gas at a constant temperature, water vapor is prevented from condensing, thus completely preserving carbon monoxide and ensuring accurate measurement results. Furthermore, particulate matter in the flue gas aerosol can be lost due to temperature changes (such as condensation) or adsorption on the pipe walls. The thermostatic treatment can reduce this loss, ensuring that the particulate matter entering the aerosol particle size analyzer represents the true situation in the flue gas.

[0048] For example, the connecting pipe 10 includes a first pipe 101 and a second pipe 102. One end of the first pipe 101 is connected to the middle of the corresponding suction pipe 45, and the other end of the first pipe 101 is connected to the inlet of the corresponding constant temperature chamber 30. One end of the second pipe 102 is connected to the outlet of the corresponding constant temperature chamber 30, and the other end of the second pipe 102 is connected to the corresponding detection element 9. It can be understood that by setting the connecting pipe 10 to include the first pipe 101 and the second pipe 102, it is convenient to install the corresponding constant temperature chamber 30.

[0049] In this embodiment, the temperature range of the constant temperature chamber is 35℃ to 45℃, which can prevent condensation of the flue gas. Specifically, the temperature of the constant temperature chamber can be 35℃, 38℃, 40℃, and 45℃.

[0050] In some embodiments, a diluent is installed within the constant temperature chamber 30. It is understood that by installing a diluent within the constant temperature chamber to dilute the flue gas, instrument overload can be avoided, an atmospheric environment can be simulated, and accurate particle size data can be obtained during sol particle size distribution detection. Simultaneously, the carbon monoxide concentration in mainstream cigarette smoke is high; direct entry into the analyzer may exceed its optimal measurement range or even damage the sensor. By diluting the flue gas, high-concentration samples can be reduced to the optimal operating range of the carbon monoxide detector, ensuring accurate measurement and protecting the instrument. The diluent can be a jet diluent or a porous tube diluent, which are existing technologies and will not be described further in this embodiment.

[0051] In some embodiments, the second detection device further includes a protective cover 20, which has multiple receiving holes. Each receiving hole corresponds to a plurality of connecting pipes 20, and the connecting pipes 10 pass through the corresponding receiving holes. It is understood that by providing the protective cover 20, the detection element 9 and the constant temperature chamber 30 can be covered, protecting them and reducing heat loss from the constant temperature chamber 30, while also preventing oil fumes and tar from adhering to the detection element 9.

[0052] Specifically, the first pipe 101 is inserted into the corresponding receiving hole.

[0053] In some embodiments, the dual-disc device includes a cigarette rotating disk 2 and a fixed detection annular disk 3 arranged opposite to each other. The fixed detection annular disk 3 has a detection area. A plurality of cigarette smoking devices 4 are disposed on the cigarette rotating disk 2. The axial direction of the plurality of cigarette smoking devices 4 is parallel to the axial direction of the cigarette rotating disk 2. Each cigarette smoking device 4 can reciprocate along its own axial direction. The clamping mechanism 41 can clamp cigarettes 100 of different diameters.

[0054] It is understandable that by setting several independently controlled cigarette smoking devices 4 on the cigarette rotating disk 2, the clamping mechanism 41 can clamp cigarettes 100 of different diameters. That is, multiple cigarettes 100 of different diameters can be clamped simultaneously on the cigarette rotating disk 2. In other words, the cigarette combustion characteristics and smoke emission testing equipment provided in this embodiment can complete the testing of multiple cigarettes 100 of different diameters, avoiding the problems of low detection efficiency, long time consumption, and insufficient sample throughput in the prior art. At the same time, each clamping mechanism 41 can clamp cigarettes 100 of different diameters. For cigarettes 100 of different diameters, there is no need to change different clamps and sealing rings. The operation is simple, the cigarette 100 installation efficiency is high, and the decrease in clamping concentricity and unstable gas path sealing caused by frequent replacement of different clamps and sealing rings are avoided, thus ensuring the accuracy of the test.

[0055] Specifically, several cigarette smoking devices 4 are evenly spaced along the axial direction of the cigarette rotating disk 2. During the rotation of the cigarette rotating disk 2, the multiple cigarette smoking devices 4 can be positioned below the detection area in sequence. Each cigarette smoking device 4 can reciprocate along its own axial direction so that the cigarettes 100 on the multiple cigarette smoking devices 4 can enter the detection area in sequence to detect the combustion characteristics of the cigarettes 100.

[0056] In this embodiment, the detection element 9 is detachably connected to the cigarette rotating disk 2.

[0057] In this embodiment, the detection areas of the image acquisition unit, pressure detection unit, and temperature measurement unit 8 all cover the detection area. The image acquisition unit can simultaneously acquire morphological images of the cigarette 100 combustion cone within the detection area from multiple angles. The pressure detection unit is used to acquire the dynamic pressure drop during cigarette 100 inhalation. The temperature measurement unit 8 is used to obtain parameters such as the temperature field, peak temperature, and temperature gradient of the cigarette 100 combustion cone within the detection area.

[0058] In some embodiments, when the cigarette 100 is in a smoldering state, only the image acquisition unit and the temperature measurement unit 8 can be controlled to be in the open state. When the cigarette 100 is being smoked, the image acquisition unit, the pressure detection unit, and the temperature measurement unit 8 can all be in the open state.

[0059] Specifically, the image acquisition unit includes multiple cameras 7 evenly spaced along the circumference of the fixed detection annular disk 3. In this embodiment, the image acquisition unit includes three industrial cameras, which are evenly distributed at 120° to facilitate simultaneous acquisition of the combustion cone's morphological images from multiple angles. The industrial cameras have a resolution of 5 megapixels and a maximum frame rate of 200fps, capturing combustion cone images at 50fps (i.e., 20ms / frame) during acquisition. The pressure detection unit uses a high-frequency response pressure sensor with a response frequency of 1–3 kHz and a measurement range of -6–0 kPa, facilitating real-time acquisition of the dynamic pressure drop during suction. The temperature measurement unit 8 includes a high-resolution infrared thermal imager with a temperature resolution ≥0.02℃, a detector resolution ≥1024×768, and a temperature measurement range of -40℃ to 2000℃, facilitating the acquisition of parameters such as the combustion cone's temperature field, peak temperature, and temperature gradient.

[0060] Furthermore, the cigarette rotating disk 2 has a diameter of 60cm and is driven by a servo motor, enabling precise angular indexing and positioning. A fixed detection annular disk 3 is spaced apart from the cigarette rotating disk 2. Five mounting holes are evenly distributed along the circumference of the cigarette rotating disk 2, with a cigarette suction device 4 fixed in each hole.

[0061] In this embodiment, during the testing, the ambient temperature of the cigarette combustion characteristic parameters and the flue gas emission testing equipment was 22±5℃ and the humidity was 60±10%RH, which meets the national standard requirements for constant temperature and humidity testing.

[0062] In some embodiments, a supplementary lighting module is installed on the fixed detection annular disk 3. Specifically, the supplementary lighting module includes multiple supplementary lighting elements 6, which are spaced apart along the circumference of the fixed detection annular disk 3 to form uniform illumination around the detection area, providing a stable and flicker-free lighting environment for image acquisition.

[0063] In this embodiment, the supplementary lighting module includes six supplementary lighting elements 6, which can be LED lights with a color temperature of 5500K, a color rendering index ≥90, and no flicker drive.

[0064] In some embodiments, the cigarette combustion characteristic parameters and smoke emission testing equipment further includes an isolation hood 5, which covers the cigarette rotating disk 2. The isolation hood 5 is made of stainless steel, and several independently controlled cigarette suction devices 4 are located inside the isolation hood 5. The isolation hood 5 has detection holes through which cigarettes 100 on the cigarette rotating disk 2 can pass. It is understood that by setting up the isolation hood 5 and providing detection holes through which cigarettes 100 can pass, during testing, the cigarette suction device 4 pulls the cigarette 100 it holds through the detection holes and into the detection area on the fixed detection disk, reducing the amount of smoke from non-tested cigarettes 100 entering the detection area. This improves the cleanliness and stability of the testing environment, significantly improves the authenticity and accuracy of data from image acquisition, infrared temperature measurement, and pressure detection, and solves the problem of smoke interference when multiple cigarettes 100 are smoldering simultaneously. In addition, the cigarette 100 burns at a very high temperature. The stainless steel shield 5 can withstand this high temperature without deforming, melting or releasing harmful gases. Moreover, the stainless steel surface is smooth and does not easily adhere to combustion residues, making it very easy to clean.

[0065] Of course, in other embodiments, transparent glass can be used instead of stainless steel to make the isolation cover 5, so as to facilitate observation of the smoldering state of the cigarette 100 inside the isolation cover 5. For example, high borosilicate glass can be used to make the isolation cover 5.

[0066] In this embodiment, the cigarette rotating disk 2 is spaced from the fixed detection ring along its axial direction to facilitate the installation of the isolation cover 5. This space can be 15mm. Of course, in other embodiments, this space can also be determined according to actual usage needs; for example, the space can be 18mm or 20mm.

[0067] Furthermore, the diameter of the detection hole is slightly larger than the diameter of the cigarette 100, which can further prevent the smoke generated by non-detection cigarettes 100 from entering the detection area.

[0068] Of course, in some embodiments, an auxiliary smoke exhaust device may be provided inside the isolation cover 5 to exhaust the smoke inside the isolation cover 5.

[0069] Specifically, the isolation cover 5 includes a first cover 51 and a second cover 52. One end of the first cover 51 and the second cover 52 are rotatably connected, and the other end of the first cover 51 is detachably connected to the second cover 52. It can be understood that by setting up the cooperating first cover 51 and second cover 52, with one end of the first cover 51 and one end of the second cover 52 rotatably connected and the other end of the first cover 51 and the other end of the second cover 52 detachably connected, relative movement between the first cover 51 and the second cover 52 is facilitated, as is the docking and closing of the first cover 51 and the second cover 52, and the mutual separation of the other ends of the first cover 51 and the second cover 52 to open the isolation cover 5. This facilitates the installation or removal of the cigarette 100, that is, under the premise of covering the cigarette 100 on the cigarette rotating disc 2, it is convenient to install or remove the cigarette 100.

[0070] Furthermore, the second cover 52 includes a housing 521 and a movable door 522. The movable door 522 is movable relative to the housing 521. The movable door 522 has a first position and a second position and is movable between the first position and the second position. When the movable door 522 is in the first position, the first cover 51 is detachably connected to the movable door 522. When the movable door 522 is in the second position and the first cover 51 is in the open state, it is convenient to install or remove the tested cigarette stick 100.

[0071] In this embodiment, the isolation cover 5 is provided with a smoke exhaust port 5211. Specifically, the smoke exhaust port 5211 is located on the side of the cover 521, through which the smoke inside the isolation cover 5 can be exhausted. Specifically, a smoke exhaust pipe can be provided to connect with the smoke exhaust port 5211, which achieves smoke exhaust without affecting the detection area.

[0072] In some embodiments, the cigarette combustion characteristic parameter and flue gas emission testing equipment further includes a smoke-feeding robot, an automatic cigarette lighter (heating wire or laser ignition), and a feeding robot. The smoke-feeding robot inserts the cigarettes 100 one by one into each cigarette suction device 4. The automatic cigarette lighter automatically ignites the cigarette 100 before the first puff, and the feeding robot removes the cigarettes 100 from the cigarette suction device 4 after the test is completed. This improves the automation level of the entire cigarette combustion characteristic parameter and flue gas emission testing equipment.

[0073] Furthermore, the control unit also includes a loading and unloading control module, which is connected to the smoke inlet robot, the automatic cigarette lighter, and the unloading robot via signals. This module controls the operating status of the smoke inlet robot, the automatic cigarette lighter, and the unloading robot, facilitating automatic loading and unloading and cigarette lighting without manual intervention, thus meeting the requirements of high-throughput continuous testing.

[0074] In this embodiment, the cigarette combustion characteristic parameters and flue gas emission testing equipment also includes an image processing module, which is communicatively connected to the image acquisition module. After receiving the image from the image acquisition unit, the image processing module can automatically segment the combustion cone region and output parameters such as charcoal line position (pixel coordinates), charcoal line width (mm), charcoal line uniformity (mm), combustion cone area (mm²), combustion cone length (mm), combustion rate (mm / s), and smoldering rate (mm / s). The image processing module is existing technology and will not be described in detail in this embodiment.

[0075] Exemplarily, the cigarette smoking device 4 also includes a support body 42 and a drive mechanism 43. The length direction of the support body 42 is parallel to the axial direction of the cigarette rotating disk 2. The drive mechanism 43 is mounted on the support body 42, and the clamping mechanism 41 is mounted on the output end of the drive mechanism 43. The drive mechanism 43 can drive the clamping mechanism 41 to reciprocate along the length direction of the support body 42. It can be understood that by setting the support body 42 and the drive mechanism 43, the support body 42 provides stable support for the drive mechanism 43. The clamping mechanism 41 is mounted on the output end of the drive mechanism 43, and the drive mechanism 43 can drive the clamping mechanism 41 to reciprocate along the length direction of the support body 42, so as to drive the cigarette 100 held by the clamping mechanism 41 to reciprocate along the length direction of the support body 42, so as to pass through the detection hole into the detection area for detection. After the detection is completed, it can drive the cigarette 100 to retract. In this embodiment, the drive mechanism 43 can be a micro stepper electric push rod.

[0076] In some embodiments, the cigarette smoking device 4 further includes a sliding block 47 and a guide rail, the output end of the drive mechanism 43 is connected to the slider 47, and the side of the slider 47 away from the output end of the drive mechanism 43 is connected to the clamping mechanism 41, which facilitates improving the stability of driving the clamping mechanism 41.

[0077] Furthermore, the cigarette smoking device 4 also includes a front cigarette holder 46, located at the end of the holding mechanism 41 away from the drive mechanism 43, which facilitates the initial positioning of the cigarette 100 and the entry of the cigarette 100 into the holding mechanism 41.

[0078] In this embodiment, the extension stroke of the cigarette smoking device 4 is 30mm, that is, when it extends, the front cigarette holder 46 moves upward by 30mm.

[0079] As another example, the clamping mechanism 41 includes a gripper assembly, an elastic tightening member 412, a conical elastic sealing sleeve 413, and a support member 414. The gripper assembly is used to clamp the filter rod section of the cigarette stick 100. The elastic tightening member 412 is sleeved on the gripper assembly. The large end of the conical elastic sealing sleeve 413 is connected to the gripper assembly. The small end of the conical elastic sealing sleeve 413 is connected to the support member 414. The end of the support member 414 away from the conical elastic sealing sleeve 413 is connected to the output end of the drive mechanism 43. Understandably, the gripper assembly is used to hold the filter rod section of the cigarette 100. The tapered elastic tightening member 412 is sleeved on the gripper assembly. When the filter rod section of the cigarette 100 enters the gripper assembly, the gripper assembly has an outward expansion action. At this time, the elastic tightening member 412 applies an elastic force to the gripper assembly, causing the gripper assembly to have a tendency to contract. At this time, the filter rod section of the cigarette 100 can be clamped, thereby improving the stability of the cigarette 100 in the clamping mechanism 41.

[0080] Specifically, one end of the first sub-pipe is connected to the conical elastic sealing sleeve 413, and the suction control module is signal-connected to the suction pump 44. It can be understood that the large end of the conical elastic sealing sleeve 413 is connected to the gripper assembly, and the small end is connected to the support member 414, forming a conical sealing cavity. Even if the conical elastic sealing sleeve 413 undergoes some deformation, the sealing performance of the conical sealing cavity can be maintained, facilitating the first sub-pipe to draw the cigarette 100 through the conical sealing cavity. In this embodiment, the suction pump 44 is installed at the bottom of the cigarette rotating disc 2. In this embodiment, both the first and second sub-pipes can be spiral telescopic tubes, which can be stretched and extended during use and automatically retract to their original shape after the external force is released. Of course, they can also be corrugated pipes or metal flexible hoses.

[0081] In some embodiments, each cigarette smoking device 4 may include a smoking pump 44 and a smoking pipeline 45, or only one smoking pump 44 may be set in the cigarette combustion parameter testing equipment, while multiple smoking pipelines 45 are connected. During operation, the connection and smoking can be controlled separately, that is, the other end of multiple second sub-pipes are all connected to the same smoking pump.

[0082] In this embodiment, multiple pressure detection units can be provided, and they can be respectively installed in multiple first sub-pipelines or multiple second sub-pipelines.

[0083] In some embodiments, the control unit further includes a telescopic control module, and the cigarette smoking device 4 further includes a front limit sensor and a rear limit sensor. Both the front limit sensor 48 and the rear limit sensor are signal-connected to the telescopic control module, and the telescopic control module is signal-connected to the drive mechanism 43. The front limit sensor 48 is used to detect whether the extension position of the clamping mechanism 41 has reached a first preset position, and the rear limit sensor is used to detect whether the retraction position of the clamping mechanism 41 has reached a second preset position, so as to detect that the clamping mechanism 41 has reached the telescopic position. If the clamping mechanism 41 has reached the telescopic position, a signal is sent to the telescopic control module, and the telescopic control module controls the drive mechanism 43 to stop moving.

[0084] In some embodiments, the clamping mechanism 41 further includes a conical sealing ring 415, and the gripper assembly includes a plurality of arc-shaped clamping pieces 411. One end of each of the arc-shaped clamping pieces 411 is connected to the large end of the conical elastic sealing sleeve 413. The conical sealing ring 415 is installed inside the conical elastic sealing sleeve 413, and one end of the conical sealing ring 415 can abut against one end of the plurality of arc-shaped clamping pieces 411, and the outer peripheral surface of the conical sealing ring 415 can abut against the inner surface of the conical elastic sealing sleeve 413. Specifically, the elastic tightening member 412 abuts against the outer side of the plurality of arc-shaped clamping pieces 411 simultaneously. Understandably, one end of each of the multiple arc-shaped clamps 411 is connected to the large end of the conical elastic sealing sleeve 413. When the multiple arc-shaped clamps 411 expand outward, the conical elastic sealing sleeve 413 can undergo a certain deformation and clamp the filter rod section of the cigarette 100. One end of the conical sealing ring 415 can abut against one end of each of the multiple arc-shaped clamps 411, sealing the gap between the large end of the conical elastic sealing sleeve 413 and the filter rod section of the cigarette 100, ensuring the sealing performance of the conical sealing cavity, and improving the stability of the suction pump 44 in drawing the cigarette 100. The conical sealing ring 415 is made of food-grade elastomer material.

[0085] Furthermore, the multiple arc-shaped clips 411 are all made of temperature-resistant and fatigue-resistant engineering plastics (such as POM or PEEK). The inner side of the arc-shaped clips 411 is provided with a flexible elastic coating layer, which uses its flexible contact characteristics to reduce contact pressure and prevent the filter rod section of the cigarette 100 from being deformed by pressure. The surface of the arc-shaped clips 411 is treated with friction reduction to reduce the frictional resistance during the insertion and removal of the cigarette 100. Under the action of the elastic tightening member 412, the multiple arc-shaped clips 411 adaptively open and tighten, realizing the centering and clamping of cigarettes 100 of different diameters.

[0086] In some embodiments, the clamping mechanism 41 further includes a plurality of elastic connectors 416, which are located between the support member 414 and the output end of the drive mechanism 43. One end of each elastic connector 416 is connected to the support member 414, and the other end is connected to the output end of the drive mechanism 43. The extension and retraction directions of the elastic connectors 416 are parallel to the length direction of the bracket body 42, so that the cigarette stick 100 has a floating amount of ±1mm along the axial direction after insertion.

[0087] Specifically, the cigarette smoking device 4 is also provided with a smoking port 49 for connecting to the conical elastic sealing sleeve 413, so as to connect the smoking pipe with the conical elastic sealing sleeve and facilitate the smoking of the cigarette.

[0088] In this embodiment, the suction control module controls each cigarette suction device 4 to operate independently according to the national standard suction mode, supporting at least the national standard suction mode with the following parameters: suction capacity 35mL, suction duration 2 seconds, and suction cycle 60 seconds. Within each suction cycle, the continuous measurement time for a single cigarette 100 is 4 seconds, including 2 seconds for smoldering state detection and 2 seconds for suction state detection; the remaining time is a smoldering waiting period. Multiple cigarette suction devices 4 employ staggered timing control, with a 12-second interval between the start-up of each pair of cigarettes. At any given time, only one cigarette 100 is in the detection state, ensuring no interference between them.

[0089] In this embodiment, by setting up the above-mentioned suction control module, detection control module, and extension control module to cooperate with each other, two seconds before the predetermined suction time, the corresponding cigarette suction device 4 is controlled to automatically extend to the detection area, triggering the image acquisition unit and temperature measurement unit 8 with zero delay, continuously acquiring the morphological evolution and temperature field changes of the cigarette 100 combustion cone in the smoldering state for 2 seconds; then, during the standard suction period, the image acquisition unit, pressure detection unit, and temperature measurement unit 8 are triggered again, synchronously acquiring the combustion cone morphology, dynamic suction resistance, and temperature field changes of the cigarette 100 during the 2-second suction process. After the suction ends, the cigarette suction device 4 retracts, and the cigarette 100 enters the smoldering waiting state until the next suction cycle arrives. That is, the control unit repeats the above process for each cigarette 100 on each cigarette suction device 4 in a preset staggered sequence, realizing continuous and uninterrupted automatic detection of multiple cigarettes 100 in their respective suction cycles.

[0090] To ensure the accuracy of the test, the test was conducted using a continuous cycle of 5 cigarettes (100 units) loaded simultaneously. The suction control parameters were: suction capacity 35 mL, single suction duration 2 s, and a complete suction cycle of 60 s for a single cigarette. Each cycle of a single cigarette only occupied 4 s of measurement time (the first 2 s of smoldering and the last 2 s of suction), with the remaining 56 s for in-situ smoldering waiting. The 5 sets of cigarette suction devices 4 were started at staggered intervals of 12 s, and the detection periods of each station did not overlap. At any given time, only one cigarette (100 units) extended into the visual detection area to complete the measurement, achieving continuous cycle detection. See Table 1 for the time allocation table (in seconds).

[0091]

[0092] Note: Before starting at 0 seconds, station 1 must extend in the last 2 seconds of the previous cycle (i.e., the 58th second) to ensure that smoldering detection begins at 0 seconds.

[0093] Using the cigarette combustion characteristic parameters and smoke emission testing equipment provided in this embodiment, three consecutive rounds of testing were conducted on 10 thin cigarettes (5.4mm in size), 10 medium cigarettes (6.5mm in size), and 10 thick cigarettes (7.8mm in size). The results show that: the timing error at each station is <5ms, and the measured synchronous trigger delay is 0.6ms to 0.8ms; the isolation hood 5 reduces smoke interference from non-tested cigarettes by more than 85%; the clamping mechanism 41 did not exhibit sealing leakage or significant deformation of the cigarette filter rod during the test; the entire process is unattended, with an average time of less than 10 minutes for each cigarette from the start of testing to disposal. The aforementioned cigarette combustion characteristic parameters and flue gas emission testing equipment can stably output multiple parameters such as charcoal wire movement distance, combustion rate, peak temperature, and dynamic draw resistance. The data repeatability is good, making it suitable for cigarette combustion mechanism research, formula screening, and quality testing. Specific results are shown in Tables 2 to 7. Specifically, Table 2 shows the test results of parameters for single puffing and smoldering of coarse cigarettes, Table 3 shows the statistical results of some combustion parameters for coarse cigarettes, Table 4 shows the test results of parameters for single puffing and smoldering of medium cigarettes, Table 5 shows the statistical results of some combustion parameters for medium cigarettes, Table 6 shows the test results of parameters for single puffing and smoldering of fine cigarettes, and Table 7 shows the statistical results of some combustion parameters for fine cigarettes.

[0094]

[0095]

[0096]

[0097]

[0098]

[0099]

[0100] As shown in Tables 2-7, the combustion characteristic parameters and flue gas emission testing equipment exhibit good adaptability in collecting combustion parameters for three sizes of cigarettes (coarse, medium, and fine). They are compatible with the testing requirements of cigarettes of different sizes and structures, without requiring adjustments to the collection parameters based on the cigarette size. During puff-by-puff smoking of the cigarette, the combustion characteristic parameters and flue gas emission testing equipment can stably, accurately, and in real-time collect key combustion characteristic parameters such as smoldering rate, combustion rate, peak temperature, char line width, and suction pressure drop. The data show good repeatability, a small relative standard deviation (RSD), and high consistency in detection.

[0101] The aforementioned cigarette combustion characteristic parameters and flue gas emission testing equipment can adapt to the differences in circumferential specifications and ventilation structures of different cigarette sizes (100), automatically match the corresponding suction state and complete signal acquisition, significantly improving the versatility and convenience of combustion performance testing for multiple specifications of cigarettes (100). At the same time, the device can achieve continuous dynamic capture of smoldering and suction states, simultaneously acquiring time-series data of three types of parameters: combustion mode, temperature field, and dynamic pressure drop. The data has strong correlation, can completely characterize the combustion mechanism, and can maintain high detection consistency and repeatability for different specifications of cigarettes (100), thus meeting the comprehensive needs of high throughput, high precision, high automation, and rapid, efficient, and accurate testing in cigarette (100) formulation development, quality control, combustion mechanism research, and actual testing.

[0102] To verify the accuracy and versatility of the above-mentioned cigarette combustion characteristics and smoke emission testing equipment in terms of smoke emission collection efficiency, the following control experiment was set up. One hundred samples of three different circumferential sizes of cigarettes (coarse, medium, and thin) were selected for the experiment. Smoke emission collection tests were conducted under standard puffing conditions using both the cigarette combustion characteristics and smoke emission testing equipment and a regular rotary smoking machine. Each group of samples was measured in parallel six times, and the average values ​​of tar and nicotine were compared.

[0103] As a standard testing device in the tobacco industry, the smoke emission collection performance of ordinary rotary smoking machines has been widely verified. If the data from the smoke combustion characteristics and smoke emission testing equipment mentioned above are highly consistent with the results of ordinary rotary smoking machines, it can be proven that: first, the collection efficiency of the aforementioned smoke combustion characteristics and smoke emission testing equipment is comparable to that of standard equipment; second, the aforementioned smoke combustion characteristics and smoke emission testing equipment can maintain stable collection performance for cigarettes of different circumferential sizes, possessing multi-specification versatility. Specific results are shown in Table 8, which is a verification data table for the versatility of the aforementioned smoke combustion characteristics and smoke emission testing equipment.

[0104]

[0105] As shown in Table 8, for 100 cigarettes of three different circumference sizes (coarse, medium, and fine), the average tar and nicotine values ​​measured by the aforementioned cigarette combustion characteristics and smoke emission testing equipment are highly similar to those measured by a conventional rotary smoking machine. Specifically, the maximum deviation in tar detection values ​​does not exceed 0.07 mg / cigarette, and the maximum deviation in nicotine detection values ​​does not exceed 0.04 mg / cigarette, both within the allowable repeatability error range of the standard method. This result indicates that the aforementioned cigarette combustion characteristics and smoke emission testing equipment, while simultaneously integrating combustion characteristic parameter acquisition and passive smoke emission collection functions, achieves smoke emission collection efficiency comparable to a standard smoking machine, providing accurate and reliable data. Furthermore, it exhibits good versatility for detecting different cigarette sizes, eliminating the need to replace the collection module or adjust the gas path settings due to variations in cigarette circumference.

[0106] To verify the accuracy, versatility, and lack of interference with combustion parameters of the above-mentioned smoke combustion characteristics and flue gas emission testing equipment, the following verification experiments were conducted. The experimental results can be found in Tables 9 and 10. Table 9 is a comparison table of aerosol detection accuracy (the above-mentioned smoke combustion characteristics and flue gas emission testing equipment and standard equipment), and Table 10 is a comparison table of non-interference verification (with / without aerosol detection module).

[0107]

[0108] Note: The above-mentioned smoke combustion characteristics and flue gas emission test equipment and standard equipment were used to conduct six parallel measurements of each sample and the average value was taken; the geometric mean particle size deviation was ≤3% and the number concentration deviation was ≤5%, which are within the allowable error range of the standard method.

[0109]

[0110] Note: Data are expressed as mean ± standard deviation; p-values ​​were obtained from independent samples t-tests and were all greater than 0.05, indicating that the connection to the aerosol particle size analyzer had no statistically significant effect on the above combustion characteristic parameters; the detection module is a neutral element in the gas path, which does not introduce additional gas resistance, does not change the suction waveform, and does not interfere with the detection of combustion parameters.

[0111] In this embodiment, the aerosol detection device employs a purely passive diversion sampling method, automatically operating from the first suction port, completely independent and parallel with the combustion parameter acquisition system, without interference. The verification results in Table 9 show that the geometric mean particle size deviation of each sample specification from the standard equipment is ≤2.4%, and the number concentration deviation is ≤4.3%. The verification results in Table 10 show that the connection of the aerosol detection module has no significant impact on the smoldering rate, peak suction pressure drop, and peak combustion cone temperature (p>0.05), confirming that the detection module does not interfere with the combustion parameter acquisition. The cigarette combustion characteristic parameters and flue gas emission testing equipment achieves true synchronous acquisition of cigarette combustion characteristic parameters and flue gas aerosol particle size distribution on the same cigarette (100mm), featuring a compact structure, accurate data, and applicability to multiple specifications.

[0112] To verify the accuracy of the cigarette combustion characteristic parameters and smoke emission testing equipment in detecting carbon monoxide, its non-interference in combustion parameter acquisition, and its versatility across various cigarette specifications, the following verification experiment was designed:

[0113] Verification of carbon monoxide detection accuracy: Using the same batch of regular cigarettes, tests were conducted on a standard smoking machine (equipped with a standard CO analyzer) and an upper-level cigarette combustion characteristic parameter and smoke emission testing device, with 10 measurements taken for each. See Table 11 for a comparison of carbon monoxide detection accuracy (each channel of the upper-level cigarette combustion characteristic parameter and smoke emission testing device versus the standard smoking machine). The results show that the average deviation of the total carbon monoxide emission measured by the five channels of the upper-level cigarette combustion characteristic parameter and smoke emission testing device from the results of the standard smoking machine is ≤3.5%, far exceeding the repeatability limit requirements specified in GB / T23356. The coefficient of variation of carbon monoxide measurements between channels is ≤2.1%.

[0114]

[0115] Note: The combustion characteristic parameters of the cigarettes and the results of each channel of the smoke emission testing equipment are the average total emission values ​​of 10 measurements of the same batch of regular cigarettes (coarse).

[0116] Interference-free verification: Using the same batch of cigarettes, tests were conducted on the cigarette combustion characteristic parameters and smoke emission testing equipment under two conditions: without and with the carbon monoxide detection module. Each test was repeated 5 times. The average dynamic pressure drop per puff and the highest temperature of the combustion cone, among other key combustion characteristic parameters, were compared between the two conditions. The results showed no statistically significant difference between the two sets of data (p>0.05), confirming that the shunting sampling of the carbon monoxide detection module does not change the main gas path suction waveform and has no systematic interference with the acquisition of combustion parameters. Specific results are shown in Table 12, which is a comparison table of interference-free verification (with / without CO detection module, n=5).

[0117]

[0118] Note: Data are expressed as mean ± standard deviation; p-values ​​were obtained from independent samples t-tests and were all greater than 0.05, indicating that the connection of the carbon monoxide detection module had no statistically significant effect on the above combustion characteristic parameters.

[0119] In this embodiment, carbon monoxide detection employs a purely passive shunting sampling method, automatically operating from the first puff, completely independent and parallel with the combustion parameter acquisition system, without interference. Verification results show that the maximum deviation of carbon monoxide measurements from the standard smoking machine is 2.9% (Table 11); the connection to the carbon monoxide detection module has no significant impact on the highest temperature and dynamic pressure drop of the combustion cone (p>0.05, Table 12), confirming that shunting sampling does not interfere with combustion parameter acquisition. The cigarette combustion characteristic parameters and smoke emission testing equipment achieves true synchronous acquisition of combustion characteristic parameters and CO emission on the same cigarette, featuring a compact structure, accurate data, and compatibility with multiple specifications.

[0120] This embodiment also provides a method for testing the combustion characteristics of cigarettes and the emissions from their smoke. By using the above-mentioned cigarette combustion characteristic parameters and the smoke emission testing equipment, the method meets the requirements for continuous testing, has high testing efficiency, and high testing accuracy.

[0121] In this embodiment, the testing method for cigarette combustion characteristics and smoke emissions includes:

[0122] S1. Install the carbon monoxide detector or aerosol particle size analyzer on the cigarette rotating disk 2 of the dual-rotor device according to the detection type.

[0123] S2. Insert multiple cigarette sticks 100 into the clamping mechanism 41 of multiple cigarette smoking devices 4;

[0124] S3. Ignite multiple cigarettes 100. After ignition, the cigarettes 100 enter a smoldering state.

[0125] S4. Control one of the cigarette suction devices 4 to drive the cigarette 100 it holds into the detection area.

[0126] S5. The image acquisition unit, pressure detection unit and temperature measurement unit 8 are all in the open state. After the first preset time, the suction control module controls the cigarette suction device 4 to suction the cigarette 100 located in the detection area and continue for the second preset time.

[0127] S6. Control the cigarette suction device 4 to drive the cigarette clamp 100 out of the detection area.

[0128] S7. Sequentially control the remaining cigarette suction device 4 to drive the cigarette 100 it holds into the detection area, and repeat steps S5-S6 until all cigarettes 100 have been detected.

[0129] S8, output the combustion characteristic parameter sequence of cigarettes at each workstation, carbon monoxide release data, or aerosol particle size monitoring data.

[0130] By employing the above testing methods and the aforementioned cigarette combustion characteristics and smoke emission testing equipment, the combustion characteristic parameters of the cigarette and the amount of carbon monoxide released in the smoke can be obtained simultaneously, or the combustion characteristic parameters of the cigarette and the particle size distribution of the smoke aerosol can be obtained simultaneously. This avoids the problem of low detection efficiency that exists in separate testing, and allows for step-by-step testing of the combustion parameters of multiple cigarettes 100. Multiple cigarettes 100 can be respectively loaded into the clamping mechanism 41 of multiple cigarette inhalation devices 4. Then, one cigarette inhalation device 4 drives itself to clamp the cigarette 100 into the testing area for testing. After the test is completed, the remaining cigarette inhalation devices 4 are sequentially controlled to drive themselves to clamp the cigarettes 100 into the testing area for continued testing until the test is completed. This meets the requirements for synchronous and continuous testing, with high testing efficiency and high detection accuracy.

[0131] Furthermore, the method for testing the combustion characteristics and emissions of cigarettes also includes step S7', repeating steps S4-S7 until all 100 cigarettes have been tested a preset number of times, in order to improve the accuracy of the test.

[0132] In this embodiment, the preset number of times can be determined according to actual usage needs. For example, it can be 2 times, 3 times, 4 times, 5 times, 6 times, 7 times, and 8 times.

[0133] Specifically, for S1, depending on the detection type, if it is necessary to simultaneously acquire the cigarette combustion characteristic parameters and the amount of carbon monoxide released in the flue gas, the carbon monoxide detector is installed on the cigarette rotating disk of the dual-rotor device. If it is necessary to simultaneously acquire the cigarette combustion characteristic parameters and the flue gas aerosol particle size distribution, the aerosol particle size spectrometer is installed on the cigarette rotating disk of the dual-rotor device.

[0134] For step S2, a smoke-feeding robot can be used to sequentially insert five cigarettes 100 into the clamping mechanism 41 of each cigarette suction device 4. After the cigarettes 100 are inserted, the elastic tightening member 412 causes the gripper assembly to hold the cigarettes 100 tightly, and the bottom of the cigarettes 100 fits against the conical sealing ring 415 to form an initial seal.

[0135] In step S3, all cigarette smoking devices 4 are in their original positions. The five cigarettes 100 are lit sequentially with the electric heating wires using the cigarette lighter. After being lit, the cigarettes 100 enter a smoldering state.

[0136] In step S4, according to the staggered timing, two seconds before the predetermined inhalation time (second 0) of one of the cigarette inhalation devices 4 (i.e., the 58th second of the previous cycle), an extension command is sent to the drive mechanism 43 of one of the cigarette inhalation devices 4. The cigarette inhalation device 4 extends into place in 0.3 seconds, and the end of the cigarette 100 away from its own filter section passes through the detection hole of the cigarette isolation cover 5 and enters the detection area of ​​the fixed detection ring disk 3.

[0137] In step S5, the detection control module activates the image acquisition unit, pressure detection unit, and temperature measurement unit 8. After a first preset time (2 seconds), the suction control module controls the cigarette suction device 4 to suction the cigarette 100 located in the detection area for a second preset time (2 seconds). Specifically, the suction control module starts the suction pump 44, performing suction according to the national standard curve of 35mL capacity and 2-second duration. The specific values ​​of the first and second preset times can be determined based on actual detection requirements.

[0138] S6. The telescopic control module controls the drive mechanism 43 to drive the cigarette 100 held by its own clamping mechanism 41 out of the detection area and back to the cigarette rotating disk 2, entering a 56-second smoldering waiting state until the next cycle (60th second) arrives.

[0139] S7. According to the preset interval time (e.g., 12 seconds), control the remaining cigarette smoking device 4 to drive the cigarette 100 it holds into the detection area in sequence, and repeat the above steps S4-S5 until all cigarettes 100 have completed one round of detection.

[0140] For step S7', repeat steps S4-S7 until all 100 cigarettes have been tested a preset number of times. Obtain the average value of the experimental data to improve the accuracy of the test. The preset number of tests can be determined according to actual usage needs, such as 5, 6, or 7 times.

[0141] For step S8, if the detection element 9 is a carbon monoxide detector, after the aspiration is completed, the combustion characteristic parameter sequence, CO release amount, and corresponding real-time parameter graphs for each of the five stations will be output simultaneously. If the detection element is an aerosol particle size analyzer, after the aspiration is completed, the combustion characteristic parameter sequence, aerosol particle size distribution curve, cumulative particle size parameter, and corresponding real-time parameter graphs for each of the five stations will be output simultaneously.

[0142] In this embodiment, the method for testing the combustion characteristics and smoke emissions of cigarettes also includes S9: after the preset number of puffs has been completed, the unloading robot takes the cigarette 100 out of the clamping mechanism 41, and then the smoking robot loads in a new cigarette 100 to prepare for the next round of testing.

[0143] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A device for testing the combustion characteristics parameters and emissions of cigarettes, characterized in that, The device includes a frame (1), a dual-rotor device, a control unit, a first detection device, and a second detection device. The dual-rotor device is mounted on the frame (1). The dual-rotor device is equipped with several independently controlled cigarette smoking devices (4). Each of the cigarette smoking devices (4) has a clamping mechanism (41), a suction pump (44), and a suction pipe (45). One end of the suction pipe (45) is connected to the suction pump (44), and the other end is connected to the inside of the clamping mechanism (41). The first detection device includes an image acquisition unit, a pressure detection unit, and a temperature measurement unit (8). The second detection device includes multiple detection elements (9) and a connection between the multiple detection elements (9). One-to-one corresponding connecting pipes (10), multiple connecting pipes (10) are set one-to-one with multiple suction pipes (45), one end of multiple connecting pipes (10) is connected to the middle of the corresponding suction pipe (45), and the other end of multiple connecting pipes (10) is connected to the corresponding detection element (9). The detection element (9) is a carbon monoxide detector or an aerosol particle size analyzer. The control unit includes a suction control module and a detection control module. The suction control module is signal-connected to several cigarette smoking devices (4). The image acquisition unit, the pressure detection unit and the temperature measurement unit (8) are all signal-connected to the detection control module.

2. The testing equipment for cigarette combustion characteristic parameters and smoke emissions according to claim 1, characterized in that, The second detection device also has multiple constant temperature chambers (30), which are respectively installed in the middle of multiple connecting pipelines (10).

3. The testing equipment for cigarette combustion characteristic parameters and smoke emissions according to claim 2, characterized in that, The connecting pipeline (10) includes a first pipeline (101) and a second pipeline (102). One end of the first pipeline (101) is connected to the middle of the corresponding suction pipeline (45), and the other end of the first pipeline (101) is connected to the inlet of the corresponding constant temperature chamber (30). One end of the second pipeline (102) is connected to the outlet of the corresponding constant temperature chamber (30), and the other end of the second pipeline (102) is connected to the corresponding detection element (9).

4. The testing equipment for cigarette combustion characteristic parameters and smoke emissions according to claim 2, characterized in that, The temperature range of the constant temperature chamber (30) is 35℃~45℃.

5. The testing equipment for cigarette combustion characteristic parameters and smoke emissions according to claim 2, characterized in that, A diluent is installed inside the constant temperature chamber (30).

6. The testing equipment for cigarette combustion characteristic parameters and smoke emissions according to claim 2, characterized in that, The second detection device also includes a protective cover (20), which has multiple receiving holes. Each of the multiple receiving holes corresponds to a multiple of the connecting pipes (10), and the connecting pipes (10) pass through the corresponding receiving holes.

7. A testing device for cigarette combustion characteristic parameters and smoke emissions according to any one of claims 1-6, characterized in that, The dual-disc device includes a cigarette rotating disc (2) and a fixed detection annular disc (3) arranged opposite to each other. The fixed detection annular disc (3) has a detection area. Several cigarette smoking devices (4) are arranged on the cigarette rotating disc (2). The axial direction of the several cigarette smoking devices (4) is parallel to the axial direction of the cigarette rotating disc (2). Each cigarette smoking device (4) can reciprocate along its own axial direction. The clamping mechanism (41) can clamp cigarettes (100) of different diameters.

8. The testing equipment for cigarette combustion characteristic parameters and smoke emissions according to claim 7, characterized in that, The detection component (9) is detached and connected to the cigarette rotating disk (2).

9. A testing device for cigarette combustion characteristic parameters and smoke emissions according to any one of claims 1-6, characterized in that, The dual-disc device includes a cigarette rotating disc (2) and a fixed detection annular disc (3) arranged opposite to each other. The fixed detection annular disc (3) has a detection area. Several cigarette smoking devices (4) are arranged on the cigarette rotating disc (2). The axial direction of the several cigarette smoking devices (4) is parallel to the axial direction of the cigarette rotating disc (2). Each cigarette smoking device (4) can reciprocate along its own axial direction. The clamping mechanism (41) can clamp cigarettes (100) of different diameters.

10. A method for testing the combustion characteristics and emissions of cigarettes, using the testing equipment for cigarette combustion characteristic parameters and emissions as described in any one of claims 1-9, characterized in that, The methods for testing the combustion characteristic parameters of cigarettes and the emissions of smoke include: S1. Install the carbon monoxide detector or aerosol particle size analyzer on the cigarette rotating disk (2) of the dual-disc device according to the detection type. S2. Insert multiple cigarette sticks (100) into the clamping mechanism (41) of the multiple cigarette smoking device (4); S3. Ignite multiple cigarettes (100), and after ignition, the cigarettes (100) enter a smoldering state; S4. Control one of the cigarette smoking devices (4) to drive the cigarette (100) it holds into the detection area; S5. The image acquisition unit, pressure detection unit and temperature measurement unit (8) are all in the open state. After the first preset time, the suction control module controls the cigarette suction device (4) to suck the cigarette (100) located in the detection area and continue for the second preset time. S6. Control the cigarette suction device (4) to drive the cigarette (100) it holds out of the detection area; S7. Sequentially control the remaining cigarette smoking devices (4) to drive the cigarettes (100) they hold into the detection area, and repeat steps S5-S6 until all the cigarettes (100) have been detected. S8, output the sequence of cigarette combustion characteristic parameters, carbon monoxide release data, or aerosol particle size monitoring data for each workstation.

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