A heating cigarette with a spiral structure

Abstract

The utility model belongs to heating cigarette technical field, concretely relates to a kind of heating cigarette with spiral structure, it includes the filter tip section of solid core, filter cooling section, support filter section and tobacco section connected in sequence;Wherein, the base material of support filter section is fiber filter core, hollow passage is arranged in the axial direction, and hollow passage is installed with spiral support piece, spiral support piece includes cylindrical shell and the spiral piece being arranged in the inside of cylindrical shell, and through-hole is uniformly distributed on cylindrical shell, and spiral piece forms spiral channel parallel to cylindrical shell, and the cylindrical shell forms cylindrical support surface;Tobacco section is arranged with heat-conducting hollow core tube in the axial direction, and heat-conducting hollow core tube is communicated with the hollow passage of support filter section.The combination design of multiple support or filter elements not only realizes the effect of smoke cooling, but also achieves the purpose of smoke interception and control of nicotine release.

Description

Technical Field

[0001] This utility model belongs to the field of heated cigarette technology, specifically relating to a heated cigarette with a spiral structure. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] Heated cigarettes work by heating the tobacco matrix with heating needles or heating plates inside the device, causing it to generate an aerosol. The temperature of the heating source is 300-350℃, and the temperature of the generated aerosol is generally high. If this temperature of aerosol is directly inhaled, it will cause severe burns to the mouth and throat. Therefore, the structure of heated cigarettes needs to be improved to effectively cool it down to a comfortable temperature. However, existing heated cigarette technologies struggle to effectively control the temperature of the smoke.

[0004] In addition, heating cigarettes through baking causes the nicotine, moisture, and flavoring substances in the tobacco to evaporate and be released. Although this can reduce the production of harmful substances to some extent, the resulting aerosols still contain potentially harmful components such as nicotine, aldehydes, and volatile organic compounds.

[0005] Although it's necessary to cool the aerosol produced by heated cigarettes, the aerosol is prone to condensation due to excessive cooling. When this condensed aerosol passes through the filter, it's easily captured by the fibers, reducing the amount of flavor compounds inhaled and resulting in a weaker cigarette. Therefore, heated cigarette filters are generally designed to be short to ensure efficient aerosol transport. However, a shorter filter can lead to poorer filtration and cooling effects on the aerosol. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention proposes a heated cigarette with a spiral structure and a combination design of multiple support or filter elements, which not only achieves the effect of cooling the smoke, but also achieves the purpose of smoke interception and control of nicotine release.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: This utility model provides a heated cigarette with a spiral structure, comprising a solid filter section, a filtration and cooling section, a supporting filter section, and a tobacco section connected in sequence; wherein... The matrix material of the supporting filter section is a fiber filter element, with a hollow channel arranged axially. A spiral support is installed in the hollow channel. The spiral support includes a cylindrical shell and a spiral component disposed inside the cylindrical shell. Through holes are evenly distributed on the cylindrical shell, and the spiral component forms a spiral channel parallel to the cylindrical shell. The cylindrical shell forms a cylindrical support surface. The tobacco section is axially equipped with a heat-conducting hollow tube, which is connected to the hollow channel supporting the filter section.

[0008] The beneficial effects achieved by one or more embodiments of the present invention are as follows: By introducing a hollow soft conduit into the tobacco rod segment of the cigarette, a hollow structure is formed in the tobacco segment, which can block the heating needle from contacting the tobacco segment, prevent the tobacco segment from sticking to the heating needle of the smoking device, and improve the cleanliness of the smoking device; with the help of multi-stage filter interception components, the smoke is guided in stages, the smoke temperature is reduced, and the release of nicotine is regulated; the perforated structure design of the filter cooling section further plays a role in balancing the draw resistance and cooling the aerosol. Attached Figure Description

[0009] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0010] Figure 1 This is a schematic diagram of the internal structure of the heated cigarette according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the filtration and cooling section of this utility model embodiment; Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0011] The components include: 1. Solid filter tip section; 2. First connecting chamber; 3. Connecting channel; 4. Cooling channel; 5. Through hole; 6. Filter cooling section; 7. Second connecting chamber; 8. Spiral support component; 9. Support filter section; 10. Tobacco section; 11. Heat-conducting hollow tube; 12. Cylindrical shell. Detailed Implementation

[0012] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0013] This utility model provides a heated cigarette with a spiral structure, comprising a solid filter section, a filtration and cooling section, a supporting filter section, and a tobacco section connected in sequence; wherein... The matrix material of the supporting filter section is a fiber filter element, with a hollow channel arranged axially. A spiral support is installed in the hollow channel. The spiral support includes a cylindrical shell and a spiral component disposed inside the cylindrical shell. Through holes are evenly distributed on the cylindrical shell, and the spiral component forms a spiral channel parallel to the cylindrical shell. The cylindrical shell forms a cylindrical support surface. The tobacco section is axially equipped with a heat-conducting hollow tube, which is connected to the hollow channel supporting the filter section.

[0014] A heat-conducting hollow tube is installed inside the tobacco section. When heating needles or heating plates are used to heat and bake the tobacco, direct contact between the heating needles or heating plates and the tobacco can be effectively prevented, thereby avoiding the tobacco from adhering to the heating needles or heating plates and keeping the smoking device clean.

[0015] The substrate material supporting the filter section is a fiber filter element, which can filter harmful substances in the aerosol obtained from tobacco heating, thereby reducing the content of harmful substances in the aerosol.

[0016] A spiral support component is installed in the hollow channel supporting the filter section. The spiral support component has a cylindrical shell, which can provide overall support for the fiber filter element to ensure the overall strength of the spiral support component. As the core handheld part of the heated cigarette, this spiral support component can effectively prevent deformation of the heated cigarette when it is held and installed.

[0017] The cylindrical shell of the spiral support component has uniformly distributed through holes, which connect the fiber filter element and the interior of the cylindrical shell to form an aerosol flow channel.

[0018] The heat-conducting hollow tube is connected to the hollow channel of the supporting filter section. When the tobacco material is heated and baked using heating needles or heating plates, most of the aerosol generated by the tobacco material first flows through the fiber filter element of the supporting filter section, and then flows into the interior of the spiral support through the through holes on the cylindrical shell. At this time, the temperature of the aerosol is relatively high. The fiber filter element can effectively filter harmful substances in the aerosol and cool the aerosol to a certain extent without causing condensation and interception of the aerosol.

[0019] After initial filtration, the aerosol enters the spiral support component. As the aerosol flows within the spiral channel, it cools further without increasing suction resistance.

[0020] The aerosol flowing through the support filter section is further cooled in the filtration and cooling section before entering the solid filter section for further filtration and cooling.

[0021] In some embodiments, the diameter ratio of the heat-conducting hollow tube to the tobacco section is 0.1-0.3:1, and the inner diameter ratio of the heat-conducting hollow tube to the spiral support is 0.7-1:1, preferably 1:1.

[0022] The smaller inner diameter of the heat-conducting hollow tube allows for a larger amount of tobacco to be added, ensuring a better smoking experience.

[0023] The small gap between the heat-conducting hollow tube and the spiral support creates a large flow resistance for aerosols, causing the generated aerosols to first enter the fiber filter element of the support filtration section for preliminary filtration, thereby effectively reducing the amount of harmful substances.

[0024] When the supporting filter section can filter out a large number of harmful substances, the length of the solid filter section can be effectively reduced to prevent the solid filter section from being too long and causing excessive interception of low-temperature aerosols, thereby ensuring the smoking experience of heated cigarettes.

[0025] When the inner diameter ratio of the heat-conducting hollow tube to the spiral support is 1:1, and the tobacco material is heated and baked using a heating needle or heating plate, the area where aerosols are generated is on the outside of the heat-conducting hollow tube and the spiral support. Since the gap between the heat-conducting hollow tube and the cylindrical shell of the spiral support is very small, most of the aerosols will pass through the fiber filter on the outside of the spiral support, and then enter the interior of the spiral support through the through holes on the cylindrical shell of the spiral support. At this time, the filtration effect of aerosols is the best.

[0026] In some embodiments, the substrate of the filtration and cooling section is a columnar fiber filter rod, and a plurality of cooling channels are distributed circumferentially in the edge region of the columnar fiber filter rod. The two ends of the columnar fiber filter rod are respectively provided with a first connecting chamber and a second connecting chamber that are connected to the two ends of each cooling channel. The second connecting chamber is connected to the supporting filtration section. The cooling channel is connected to the outside through a through hole.

[0027] The cooling channels are located at the edge of the filtration cooling section, making it easier to cool the aerosol. The small inner diameter and numerous cooling channels result in a larger contact area between the aerosol and the fiber filter rod matrix, which in turn helps to adsorb and filter harmful substances in the aerosol.

[0028] The second connecting chamber is connected to the support filter section, which collects aerosols from various areas of the support filter section and distributes them evenly to each cooling channel. After being cooled by the cooling channels, the aerosols are collected and mixed in the first connecting chamber. The remixed aerosols then enter the solid filter section to ensure the uniformity of the inhaled aerosols. Moreover, the second connecting chamber's collection and uniform distribution of aerosols effectively reduces suction resistance.

[0029] The cooling channel is connected to the outside world through a through hole. The through hole design can effectively adjust the suction resistance and control the temperature of the aerosol to a certain extent.

[0030] Preferably, the cooling channel is connected to the first communicating chamber via a connecting channel, and the connecting channel is inclined towards the inner side of the filtration and cooling section along the flue gas flow direction.

[0031] In some embodiments, the porosity of the fiber filter element supporting the filter section is 50%-70% to reduce suction resistance and intercept aerosols.

[0032] Preferably, the fiber of the fiber filter element is cellulose acetate, polypropylene, or a composite fiber.

[0033] Preferably, the curing agent for the fiber filter element is triacetin or triethyl citrate.

[0034] In some embodiments, the thread pitch of the helical component is 1-3 mm, preferably 1.5-3 mm.

[0035] The method for preparing the heated cigarette with a spiral structure includes the following steps: Tobacco segments are prepared by rolling heat-conducting hollow tubes together with tobacco materials. A hollow tube is made using fibers, and a spiral support is installed in the hollow tube so that the cylindrical shell of the spiral support abuts against the inner wall of the hollow tube to prepare a support filter section. Prepare solid filter tip section and filtration cooling section; The tobacco section, the support filter section, the filter cooling section, and the solid filter tip section are sequentially combined and rolled to obtain a heated cigarette. The filter cooling section of the heated cigarette is perforated to obtain the product.

[0036] During the rolling process, the solid core filter tip section, the filter cooling section and the support filter section are first twisted together. Under the rotation and friction of the twisting drum, these three sections are tightly wrapped with tipping paper. The resulting composite structure is then joined with tobacco segments by twisting.

[0037] This twisting sequence reduces the number of layers of tipping paper wrapped around the tobacco segment, thus ensuring good thermal conductivity of the tobacco segment.

[0038] The method for preparing tobacco segments is as follows: If the raw material is reconstituted tobacco sheet produced by papermaking, the tobacco segments are prepared using an ordered rolling process: the rolled reconstituted tobacco sheet is pressed by a double-roller for continuous rolling, and then bundled into shape through a trumpet mouth; the bundled ordered tobacco shreds are wrapped in cigarette paper, and after being covered with cigarette paper, glue is sprayed and heat-cured, and then radially twisted by a twisting wheel to form a tobacco base rod, and the tobacco base rod is cut into a fixed length by a cutting wheel; If the raw material is a roll-pressed sheet or a slurry-processed sheet, the sheet material is first cut into reconstituted tobacco leaves of fixed width and a certain length. On the cigarette rolling machine, the tobacco leaves are adsorbed by negative pressure. The tobacco tongue compresses the loose tobacco bundle into a cylindrical shape. One side of the cigarette paper completely wraps the adsorbed tobacco bundle, while the other side is upright and hot melt adhesive is precisely applied from the nozzle to the inside of the paper edge. The adhesive is then quickly dried and cured by an electric soldering iron to form tobacco segments.

[0039] The present invention will be further described below with reference to the embodiments.

[0040] Example like Figure 1 As shown, a heated cigarette with a spiral structure includes a solid filter section 1, a filtration and cooling section 6, a support filter section 9, and a tobacco section 10 connected in sequence; wherein, The substrate material of the supporting filter section 9 is a fiber filter element, with a hollow channel arranged axially. A spiral support member 8 is installed inside the hollow channel. The spiral support member 8 includes a cylindrical shell 12 and a spiral member disposed inside the cylindrical shell 12. Through holes are evenly distributed on the cylindrical shell 12, such as... Figure 3 As shown, the spiral component forms a spiral channel parallel to the cylindrical shell 12, the thread pitch of the spiral component is 1-3mm, and the cylindrical shell 12 forms a cylindrical support surface; the spiral component is made of high-density porous material.

[0041] A heat-conducting hollow tube 11 is axially arranged in the tobacco section 10, and the heat-conducting hollow tube 11 is connected to the hollow channel of the supporting filter section 9.

[0042] The diameter ratio of the heat-conducting hollow tube 11 to the tobacco section 10 is 0.1-0.3:1, and the inner diameter ratio of the heat-conducting hollow tube to the spiral support 8 is 0.7-1:1, preferably 1:1.

[0043] The substrate of the filtration and cooling section 6 is a columnar fiber filter rod, and several cooling channels 4 are circumferentially distributed along the edge region of the columnar fiber filter rod, such as... Figure 2 As shown, the two ends of the columnar fiber filter rod are respectively provided with a first connecting chamber 2 and a second connecting chamber 7 that are connected to the two ends of each cooling channel 4. The second connecting chamber 7 is connected to the supporting filter section; the cooling channel is connected to the outside through the through hole.

[0044] The first connecting chamber 2 and the second connecting chamber 7 can be prepared by attaching annular fiber filter rings to both ends after the main body of the filter cooling section 6, including the cooling channel 4, is prepared. The hollow part inside the fiber filter ring is connected to each cooling channel 4, and the hollow part forms a connecting chamber.

[0045] The porosity of the fiber filter element supporting filter section 9 is 50%-70% to reduce suction resistance and intercept aerosols. The fibers of the fiber filter element are cellulose acetate, polypropylene, or composite fibers, and the curing agent is triacetin or triethyl citrate.

[0046] The length of the tobacco segment is 14 mm; the circumference is 21 mm. The outer diameter of the support filter section is 21 mm; the inner diameter is 4 mm; and the length is 16 mm. The outer diameter of the solid filter section is 21mm; the length is 18mm.

[0047] The preparation method of heated cigarettes with a spiral structure is as follows: S1. The heat-conducting hollow tube and reconstituted tobacco leaves are rolled together on a machine to form tobacco segments containing the heat-conducting hollow tube, which are ordered, partially ordered or disordered. S2. Porous hollow pipes will be prepared using cellulose acetate, polypropylene cellulose or other composite fibers, with a porosity of 50%-70%, and the curing agent will be triacetin or triethyl citrate. S3. Insert a spiral support member into the middle of the hollow fiber tube obtained in step S2. The spiral support member is made of high-density porous material. Make the cylindrical shell of the spiral support member abut against the inner wall of the hollow tube to prepare the support filter section. S4. Solid filter tip segments are prepared using cellulose acetate, polypropylene cellulose or other composite fibers, with a porosity of 40-50%, and the curing agent is triacetin or triethyl citrate. S5. The filter cooling section is prepared using cellulose acetate, polypropylene cellulose or other composite fibers with a porosity of 40-50% and the curing agent is triacetin or triethyl citrate. S6, tobacco section, support filter section, filter cooling section and solid filter tip section are sequentially combined and rolled to obtain heated cigarettes; S7. The heated cigarette obtained in S6 is laser-drilled to make the through holes connect the cooling channel of the filter cooling section to the outside.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat-not-burn cigarette having a spiral structure, characterized by: It includes a solid filter section, a filtration and cooling section, a support filter section, and a tobacco section connected in sequence; wherein, The matrix material of the supporting filter section is a fiber filter element, with a hollow channel arranged axially. A spiral support is installed in the hollow channel. The spiral support includes a cylindrical shell and a spiral component disposed inside the cylindrical shell. Through holes are evenly distributed on the cylindrical shell, and the spiral component forms a spiral channel parallel to the cylindrical shell. The cylindrical shell forms a cylindrical support surface. The tobacco section is axially equipped with a heat-conducting hollow tube, which is connected to the hollow channel supporting the filter section.

2. The heat-not-burn cigarette having a spiral structure according to claim 1, characterized by: The diameter ratio of the heat-conducting hollow tube to the tobacco section is 0.1-0.3:

1.

3. The heat-not-burn cigarette having a spiral structure according to claim 2, characterized by: The ratio of the inner diameter of the heat-conducting hollow tube to that of the spiral support is 0.7-1:

1.

4. The heat-not-burn cigarette having a spiral structure according to claim 1, characterized by: The substrate of the filtration and cooling section is a columnar fiber filter rod. Several cooling channels are distributed circumferentially in the edge area of ​​the columnar fiber filter rod. The two ends of the columnar fiber filter rod are respectively provided with a first connecting chamber and a second connecting chamber that are connected to the two ends of each cooling channel. The second connecting chamber is connected to the supporting filtration section.

5. The heat-not-burn cigarette having a spiral structure according to claim 4, characterized by: The cooling channel is connected to the outside through a through hole.

6. The heat-not-burn cigarette having a spiral structure according to claim 4, characterized by: The porosity of the fiber filter element supporting the filtration section is 50%-70%.

7. The heat-not-burn cigarette having a spiral structure according to claim 6, characterized by: The fibers in the fiber filter element are cellulose acetate, polypropylene, or composite fibers.

8. The heat-not-burn cigarette having a spiral structure according to claim 7, characterized by: The curing agent for the fiber filter element is triacetin or triethyl citrate.

9. The heat-not-burn cigarette having a spiral structure according to claim 1, characterized by: The thread pitch of the spiral component is 1-3mm.

10. The heat-not-burn cigarette having a spiral structure according to claim 1, characterized by: The thread pitch of the spiral component is 1.5-3mm.

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