EP3607839A1 - Dispositif de filtrage de fumée - Google Patents

Dispositif de filtrage de fumée Download PDF

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Publication number
EP3607839A1
EP3607839A1 EP18187733.3A EP18187733A EP3607839A1 EP 3607839 A1 EP3607839 A1 EP 3607839A1 EP 18187733 A EP18187733 A EP 18187733A EP 3607839 A1 EP3607839 A1 EP 3607839A1
Authority
EP
European Patent Office
Prior art keywords
filtering device
smoke
smoke filtering
flow channels
inner diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP18187733.3A
Other languages
German (de)
English (en)
Inventor
Yuanfeng FU
Ziheng ZHANG
Gang Liu
Zhengyong LI
Zhaozhen SHI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Golden Leaf Technology Development Co Ltd
Original Assignee
Gongqingcheng Daole Investment Management Partnership (llp)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gongqingcheng Daole Investment Management Partnership (llp) filed Critical Gongqingcheng Daole Investment Management Partnership (llp)
Priority to EP18187733.3A priority Critical patent/EP3607839A1/fr
Publication of EP3607839A1 publication Critical patent/EP3607839A1/fr
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure

Definitions

  • the present disclosure relates to the technical field of tobacco, particularly to a smoke filtering device.
  • Smoking can bring about spiritual enjoyment, but smoking is harmful to health because the tobaccos will form in a combustion process a series of substances harmful to human's body. Similarly, tobacco products such as cigars also have the same problem. Harmful compounds produced by the tobaccos in the combustion process include: nicotine, nitrosamine, carbonic oxide, polycyclic aromatic hydrocarbon (PAHs), tar, cyanide, formaldehyde, acrolein, heavy metals and so on.
  • PAHs polycyclic aromatic hydrocarbon
  • An object of the present disclosure is to provide a smoke filtering device to overcome defects of the prior art.
  • Another object of the present disclosure is a use of a one-time injection-molded smoke filtering device in cigarettes.
  • the present disclosure provides a smoke filtering device, including a body which is provided therein with flow channels configured for allowing smoke to flow therethrough, wherein the flow channels filter the smoke by prolonging duration of the smoke staying in the flow channels.
  • the body is a cylindrical body, with a diameter of 4-10mm, and a height of 3-25mm.
  • the body is internally symmetrical in structure, and the symmetrical structure is axially symmetrical along a linear line perpendicular to an axis of the body.
  • the flow channels have an inner diameter of 0.2-1.0mm.
  • a sectional shape of each flow channel is a circular shape, an oval shape, a polygonal shape or an irregular shape.
  • a polygonal shape a square shape is the most common shape.
  • a shape of a longitudinal profile of each flow channel can be a triangular shape, a shape formed by rectangles connected in a front-rear direction or a bent shape.
  • an upper end face and/or a lower end face of the body are/is a structure of a concave platform.
  • the flow channels each have a first inner diameter segment and a second inner diameter segment in communication with each other, wherein an inner diameter size of the first inner diameter segment is smaller than an inner diameter size of the second inner diameter segment. Therefore, the shape of the longitudinal profile of the flow channel is formed by two rectangles connected in a front-rear direction.
  • the flow channels each have a first inner diameter end and a second inner diameter end, wherein an inner diameter size of the first inner diameter end is smaller than an inner diameter size of the second inner diameter end.
  • the shape of the longitudinal profile of the flow channels is a trapezoidal shape.
  • the flow channels are in a straight-through structure and/or a bent structure.
  • the shape of the longitudinal profile of the flow channel is formed by two rectangles connected in a front-rear direction and has a bent structure having a middle portion as the bent portion.
  • the smoke filtering device is made through a one-time injection-molding process.
  • the smoke filtering device can use injection-molding raw materials, such as PS (polystyrenes), PP (polypropylene), AS (styrene-acrylonitrile copolymers), ABS (acrylonitrile-butadiene-styrene), PLA (polylactic acid), PBS (polybutylene succinate), and PBAT (polybutylene adipate terephthalate).
  • PS polystyrenes
  • PP polypropylene
  • AS styrene-acrylonitrile copolymers
  • ABS acrylonitrile-butadiene-styrene
  • PLA polylactic acid
  • PBS polybutylene succinate
  • PBAT polybutylene adipate terephthalate
  • the flow channels are each provided therein with at least one smoke filtering component.
  • the smoke filtering component includes an inner barrel, an outer barrel and swirling blades provided between the inner barrel and the outer barrel, wherein the inner barrel and the outer barrel are coaxially provided; the inner barrel is detachably connected with a blocking mechanism configured for blocking an inner passage of the inner barrel.
  • a torsion angle between a top edge and a bottom edge of each swirling blade is 30°-60°.
  • the flow channels are each provided therein with at least one baffle plate.
  • the baffle plate and an inner wall of the flow channel define a flow guide passage.
  • the flow channels are each provided therein with a plurality of baffle plates arranged in parallel at intervals, and two adjacent baffle plates and an inner wall of the flow channel define a flow guide passage.
  • the baffle plate is provided with a plurality of curved portions.
  • the curved portions each include a first bent sheet, a second bent sheet and a third bent sheet connected in sequence, and the first bent sheet and the second bent sheet are both provided to define an angle with the third bent sheet.
  • the present disclosure further relates to a use of the above smoke filtering device in a cavity-combined filter rod.
  • the smoke filtering device provided in the present disclosure has the following effects: through a particular flow channel design of the present disclosure, the staying duration of the smoke is prolonged, a flow state of the smoke is changed, and further, a part of harmful substances such as tar are settled and adsorbed.
  • 1 body; 2. flow channel; 3. first inner diameter segment; 4. second inner diameter segment; 5. first inner diameter end; 6. second inner diameter end; 7. bent portion; 8. concave platform; 9. smoke filtering component; 10. light-free catalyst filtering layer; 11. polypropylene electret filtering layer; 12. inner barrel; 13.outer barrel; 14. swirling blade; 15. blocking mechanism; 16. baffle plate; 17. flow guide passage; 18. curved portion; 19. first bent sheet; 20. second bent sheet; 21. third bent sheet.
  • FIG. 1 and FIG. 2 represent smoke flow directions.
  • the present disclosure provides a smoke filtering device, including a body 1, wherein there are flow channels 2 configured for allowing smoke to flow therethrough in the body 1, and the flow channels 2 filter the smoke by prolonging duration of the smoke staying in the flow channels.
  • the body 1 is a cylindrical body, with a diameter of 4-10mm, and a height of 3-25mm.
  • the body 1 is internally symmetrical in structure, and the symmetrical structure is axially symmetrical along a linear line perpendicular to an axis of the body 1.
  • the term "the body is internally symmetrical in structure” should be construed that a shape of a longitudinal profile of the body is symmetric in a front-rear direction.
  • the smoke enters from a front end and is discharged from a rear end, or enters from the rear end and is discharged from the front end, wherein paths that the smoke flows through in both cases are same.
  • the flow channels 2 have an inner diameter of 0.2-1.0mm.
  • a sectional shape of the flow channel 2 is a circular shape, an oval shape, a polygonal shape or an irregular shape.
  • a polygonal shape a square shape is the most common shape.
  • a shape of a longitudinal profile of the flow channels 2 can be a triangular shape, a shape formed by rectangles connected in a front-rear direction or a bent shape.
  • the flow channels 2 are distributed in a discrete and uniform manner or regularly distributed in rows or columns inside the body 1.
  • an upper end face and/or a lower end face of the body 1 are/is in a structure of a concave platform 8.
  • the flow channels 2 each have a first inner diameter segment 3 and a second inner diameter segment 4 in communication with each other, an inner diameter size of the first inner diameter segment 3 is smaller than an inner diameter size of the second inner diameter segment 4. Therefore, the shape of the longitudinal profile of the flow channel 2 is formed by two rectangles connected in a front-rear direction.
  • the flow channels 2 each have a first inner diameter end 5 and a second inner diameter end 6, an inner diameter size of the first inner diameter end 5 is smaller than an inner diameter size of the second inner diameter end 6. Therefore, the shape of the longitudinal profile of the flow channel 2 is a trapezoidal shape.
  • the flow channels 2 are in a straight-through structure and/or a bent structure.
  • the shape of the longitudinal profile of the flow channel 2 is formed by two rectangles connected in a front-rear direction and has a bent structure, having a middle portion as the bent portion 7.
  • the smoke filtering device is made through a one-time injection-molding process.
  • the smoke filtering device can use injection-molding raw materials , such as PS (polystyrenes), PP (polypropylene), AS (styrene-acrylonitrile copolymers), ABS (acrylonitrile-butadiene-styrene), PLA (polylactic acid), PBS (polybutylene succinate), and PBAT (polybutylene adipate terephthalate).
  • PS polystyrenes
  • PP polypropylene
  • AS styrene-acrylonitrile copolymers
  • ABS acrylonitrile-butadiene-styrene
  • PLA polylactic acid
  • PBS polybutylene succinate
  • PBAT polybutylene adipate terephthalate
  • the flow channels 2 are each provided therein with at least one smoke filtering component 9.
  • the smoke filtering component 9 includes a light-free catalyst filtering layer 10 and a polypropylene electret filtering layer 11.
  • the smoke filtering component 9 includes an inner barrel 12, an outer barrel 13 and swirling blades 14 provided between the inner barrel 12 and the outer barrel 13, wherein the inner barrel 12 and the outer barrel 13 are coaxially provided; the inner barrel 12 is detachably connected with a blocking mechanism 15 for blocking an inner passage of the inner barrel 12.
  • the blocking mechanism 15 is in form of blind plates connected to two ends of the inner barrel 12.
  • a torsion angle between a top edge and a bottom edge of the swirling blade 14 is 30°-60°.
  • the swirling blades 14 are designed in a torsional manner, wherein the angle between the top edge and the bottom edge of one swirling blade 14 is the torsion angle, which torsion angle can be 30°, 45° or 60°.
  • a torsional rotation direction of the swirling blades 14 can be of two types, i.e. the clockwise direction and the anticlockwise direction.
  • the flow channels 2 are each provided therein with at least one baffle plate 16.
  • the baffle plate 16 and an inner wall of the flow channel 2 forms a flow guide passage 17.
  • the flow channels 2 are each provided therein with a plurality of baffle plates 16 arranged in parallel at intervals, and two adjacent baffle plates 16 and an inner wall of the flow channel 2 form a flow guide passage 17.
  • the baffle plate 16 is provided with a plurality of curved portions 18.
  • the curved portions 18 on the baffle plate 16 can enhance a turbulent degree of gas in the flow guide passages 17, and can prolong the duration of the gas staying in the flow guide passages 17, improving the filtering efficiency.
  • the curved portions 18 can be in an arc shape or also can be in an angular shape (formed by bent sheets with an angle therebetween), of which a section also can be in an isosceles trapezoidal shape.
  • the curved portions 18 each include a first bent sheet 19, a second bent sheet 20 and a third bent sheet 21 connected in sequence, and the first bent sheet 19 and the second bent sheet 20 are both provided to define an angle with the third bent sheet 21.
  • Such arrangement manner increases the turbulent degree of the smoke inside the flow guide passages 17, and increases random motion of the gas, such that the probability of the smoke striking the baffle plates 16 is increased, meanwhile, the duration of the smoke staying in the flow guide passages 17 is also prolonged, thus greatly improving the filtering efficiency of the smoke filtering device.
  • an appearance of the body 1 is in a cylindrical shape, the body has six flow channels 2 uniformly distributed therein, and the flow channels each have a cross section in a circular shape.
  • the first inner diameter segments 3 of two flow channels 2 face up
  • the second inner diameter segments 4 of the other four flow channels 2 face up.
  • the six flow channels are distributed uniformly, ensuring that this smoke filtering device has a symmetrical structure which is symmetrical in a front-rear direction.
  • the smoke enters from an end A and is discharged from an end B.
  • the first inner diameter segments 3 of three flow channels 2 may face up, the second inner diameter segments 4 of the other three flow channels 2 may face up.
  • the appearance of the body 1 is in a cylindrical shape, the body has seven flow channels 2 uniformly distributed therein, and the flow channels each have a cross section in a circular shape. There is a bent portion 7 in a middle portion of the flow channel 2.
  • This smoke filtering device is in a symmetrical structure which is symmetrical in a front-rear direction. Here, the smoke enters from an end A and is discharged from an end B.
  • the appearance of the body 1 is in a cylindrical shape, with a concave platform 8 at both upper and lower ends.
  • the body has 16 flow channels 2 uniformly distributed therein, and the flow channels each have a cross section in a circular shape.
  • the flow channels 2 are uniformly distributed, ensuring that this smoke filtering device has a symmetrical structure which is symmetrical in a front-rear direction.
  • a shape of a longitudinal profile of this flow channel 2 is a trapezoidal shape.
  • a light-free catalyst filtering layer 10 and a polypropylene electret filtering layer 11 are provided in a stacking manner; in use, cigarette smoke enters the flow channel 2, passes through the polypropylene electret filtering layer 11, to filter out most of smoke particle pollutants. Then, the cigarette smoke passes through the light-free catalyst filtering layer 10 to filter out most of harmful substances such as nicotine, nitrosamine, and benzopyrene. Finally, the cigarette smoke enters a mouth of a smoker. Harm of the cigarette smoke to the body in the smoking process is significantly reduced. Increasing or decreasing the number of the polypropylene electret filtering layer can change the filtering efficiency, so as to satisfy requirements of different population to health.
  • this smoke filtering component 9 includes an inner barrel 12, an outer barrel 13, swirling blades 14, a support ring, and a blocking mechanism 15 (for example, a blind plate).
  • the support ring is connected to an upper edge of an outer wall of the outer barrel 13, and four holes are circumferentially provided uniformly on the support ring for connection and fixation.
  • the inner barrel 12 and the outer barrel 13 are provided coaxially, the swirling blades 14 are between the inner barrel 12 and the outer barrel 13, and a torsional rotation direction of the swirling blades 14 is the clockwise direction.
  • the blind plate blocks a top end of the inner barrel.
  • the present disclosure further relates to a use of the above smoke filtering device in a cavity-combined filter rod.
  • a polystyrene smoke filtering device with a diameter of 6mm and a length of 20mm is manufactured through a one-time injection molding process. An appearance of the polystyrene smoke filtering device is in a cylindrical shape.
  • the polystyrene smoke filtering device has six flow channels 2 uniformly distributed therein.
  • the flow channels each have a cross section in a circular shape.
  • the flow channels 2 each have an inner diameter of 0.2mm for a front 10mm segment, and an inner diameter of 0.4mm for a rear 10mm segment.
  • first inner diameter segments 3 of three flow channels 2 face up
  • second inner diameter segments 4 of the other three flow channels 2 face up
  • the six flow channels are distributed uniformly, ensuring that this smoke filtering device has a symmetrical structure which is symmetrical in a front-rear direction.
  • a polybutylene succinate smoke filtering device with a diameter of 10mm and a length of 5mm is manufactured through a one-time injection molding process.
  • An appearance of the polybutylene succinate smoke filtering device is in a cylindrical shape.
  • the polybutylene succinate smoke filtering device has eight flow channels 2 uniformly distributed therein.
  • the flow channels each have a cross section in a circular shape with a diameter of 1mm.
  • a styrene-acrylonitrile copolymer smoke filtering device with a diameter of 4mm and a length of 25mm is manufactured through a one-time injection molding process.
  • An appearance of the styrene-acrylonitrile copolymer smoke filtering device is in a cylindrical shape, which has two ends (i.e. the upper and lower ends) each provided with a concave platform 8 with a height of 3mm.
  • the styrene-acrylonitrile copolymer smoke filtering device has a plurality of flow channels 2 uniformly distributed therein.
  • the flow channels each have a cross section in a circular shape.
  • the flow channels are uniformly distributed, ensuring that this smoke filtering device has a symmetrical structure which is symmetrical in a front-rear direction.
  • the structure of the flow channel 2 as shown in FIG. 4 also can be used.
  • This flow channel 2 has a front end in a square shape with a side length of 0.2mm, and a tail end in a square shape with a side length of 0.3mm, and has a longitudinal profile in a trapezoidal shape.
  • first inner diameter ends 5 of four flow channels 2 face up
  • second inner diameter ends 6 of the other four flow channels 2 face up, thus ensuring that the filtering device has a symmetrical structure which is symmetrical in a front-rear direction.
  • the smoke filtering device of Embodiment 1 was processed to manufacture a filter rod by combining cavities, then another 60 commercially available common cigarettes were taken, and tows therein were drawn out and replaced by the combined filter rod.
  • Embodiments 2 and 3 were processed respectively to manufacture a filter rod by combining cavities. Another 60 commercially available common cigarettes were taken for each case, and tows therein were drawn out and replaced by the compounded filter rods.
  • Smoke test was carried out for the above 240 cigarettes in 4 groups, and results are as follows: Item TPM H 2 O NIC NFDPM CO mg/per cigarette mg/per cigarette mg/per cigarette mg/per cigarette mg/per cigarette mg/per cigarette Control Sample 13.5 1.5 0.76 11.24 10.6 Embodiment 1 11.6 1.6 0.75 9.25 9.8 Embodiment 2 11.3 1.55 0.71 9.04 9.7 Embodiment 3 11.5 1.48 0.73 9.29 10.1
  • TPM refers to a total particulate matter in the smoke
  • NIC refers to the content of nicotine in the smoke
  • NFDPM nicotine-free dry particulate matter
  • Detection methods thereof are conventional methods existing in the art, for example, detections are carried out according to the methods recorded in GB/T19069-2004 .
  • Embodiments 1-3 according to the present disclosure have a significantly reduced tar content (NFDPM), about 17% in average.
  • the smoke filtering device of the present disclosure has the following effects.
  • the smoke filtering device of the present disclosure can be directly used in the cavity-combined filter rod.
  • the smoke filtering device of the present disclosure has good mechanical processability.
  • the smoke filtering device of the present disclosure increases the length of the flow channels for the smoke, increases the duration of the smoke staying in the flow channels, improves the collision efficiency of the smoke, and thus reduces the harmful substances such as tar in the smoke.
  • all the materials used are food-grade raw materials, and the raw materials are odorless, tasteless, heat-proof and so on. Therefore, on the basis of reducing the harmful substances such as tar in the smoke, no unfavorable odor will be introduced or generated.
  • the smoke filtering device of the present disclosure not only can be used in the conventional cigarettes, but also can be used in heat-not-burn cigarettes.
  • the smoke filtering device of the present disclosure can settle and adsorb a part of harmful substances such as tar in the smoke, and has industrial applicability.

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EP18187733.3A 2018-08-07 2018-08-07 Dispositif de filtrage de fumée Pending EP3607839A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18187733.3A EP3607839A1 (fr) 2018-08-07 2018-08-07 Dispositif de filtrage de fumée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18187733.3A EP3607839A1 (fr) 2018-08-07 2018-08-07 Dispositif de filtrage de fumée

Publications (1)

Publication Number Publication Date
EP3607839A1 true EP3607839A1 (fr) 2020-02-12

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Application Number Title Priority Date Filing Date
EP18187733.3A Pending EP3607839A1 (fr) 2018-08-07 2018-08-07 Dispositif de filtrage de fumée

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115039912A (zh) * 2022-06-27 2022-09-13 武汉轻工大学 一种百页式烟草滤嘴

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393885A (en) * 1981-09-21 1983-07-19 Brown & Williamson Tobacco Corporation Cigarette filter
US6345625B1 (en) * 1997-12-06 2002-02-12 Kar Eng Chew Filter for secondary smoke and smoking articles incorporating the same
CN103431518A (zh) * 2013-09-05 2013-12-11 上海华宝生物科技有限公司 一种一次注塑成型烟气过滤装置
US20140202479A1 (en) * 2011-05-13 2014-07-24 British American Tobacco (Investments) Limited Support structure
US20150122277A1 (en) * 2011-12-20 2015-05-07 British American Tobacco (Investments) Limited Smoking articles and other flow delivery articles
US20170127719A1 (en) * 2014-06-30 2017-05-11 British American Tobacco (Investments) Limited Flow Control Device
EP3305102A1 (fr) * 2016-10-07 2018-04-11 Reemtsma Cigarettenfabriken GmbH Élément de filtre pour article à fumer
EP3332868A1 (fr) * 2015-08-09 2018-06-13 Jinan Shengquan Group Share Holding Co., Ltd Matériau adsorbant à base de graphène, son procédé de préparation et application associée, et bout filtre de cigarette et cigarette

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393885A (en) * 1981-09-21 1983-07-19 Brown & Williamson Tobacco Corporation Cigarette filter
US6345625B1 (en) * 1997-12-06 2002-02-12 Kar Eng Chew Filter for secondary smoke and smoking articles incorporating the same
US20140202479A1 (en) * 2011-05-13 2014-07-24 British American Tobacco (Investments) Limited Support structure
US20150122277A1 (en) * 2011-12-20 2015-05-07 British American Tobacco (Investments) Limited Smoking articles and other flow delivery articles
CN103431518A (zh) * 2013-09-05 2013-12-11 上海华宝生物科技有限公司 一种一次注塑成型烟气过滤装置
US20170127719A1 (en) * 2014-06-30 2017-05-11 British American Tobacco (Investments) Limited Flow Control Device
EP3332868A1 (fr) * 2015-08-09 2018-06-13 Jinan Shengquan Group Share Holding Co., Ltd Matériau adsorbant à base de graphène, son procédé de préparation et application associée, et bout filtre de cigarette et cigarette
EP3305102A1 (fr) * 2016-10-07 2018-04-11 Reemtsma Cigarettenfabriken GmbH Élément de filtre pour article à fumer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115039912A (zh) * 2022-06-27 2022-09-13 武汉轻工大学 一种百页式烟草滤嘴
CN115039912B (zh) * 2022-06-27 2024-04-09 武汉轻工大学 一种百页式烟草滤嘴

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