A multi-section heating cigarette

Abstract

The utility model discloses a multi -section type heating cigarette belongs to heating cigarette technical field, including heating section, filter section and guide piece, one end of guide piece sets up heating section, one end of heating section sets up filter section, the filter section includes filter stick body and filter tip stick, one end of filter stick body sets up filter tip stick, the middle part of filter stick body is provided with center hole, and the periphery of filter stick body is provided with a plurality of semicircular holes, and the semicircular hole surrounds center hole and is provided, the outside of filter stick body sets up first cladding layer, through the structure of stepped channel and the setting of a plurality of semicircular holes, can improve the effect of smoke filtration, guarantees that smoke is fully filtered in limited time, avoids not fully filtering inhaled in the smoke to respiratory tract, guarantees the smoking taste of smoke.

Description

Technical Field

[0001] This utility model belongs to the field of heated cigarette technology, specifically relating to a multi-segment heated cigarette. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] Heated cigarettes are heated using a heating device. The inside of a heated cigarette is filled with specially treated tobacco materials, commonly reconstituted tobacco. These tobacco materials undergo special processing to meet the requirements for releasing aroma and nicotine at specific temperatures. The heating device is the key component of heated cigarettes, and based on different heating principles, they are mainly divided into electric heating type, fuel heating type (such as carbon heating), and physicochemical reaction heating type (such as physical crystallization, chemical reaction, etc.). Among them, the electric heating type heats the tobacco through a battery and an atomizing core.

[0004] Current heated cigarettes typically feature a smoke-generating carrier, which is heated by a heating element in the device. However, misalignment of the heating element during insertion can occur, preventing accurate placement in the center of the carrier and affecting heating. The carrier has an outer covering and a hollow tobacco section on its inner side, with a filter at one end. During inhalation, the hollow tobacco section is inserted into the heating element, heating the carrier to a certain temperature to produce smoke. However, current filters have limited length. During inhalation, the smoke generated by the heating element easily passes through the heated space in the hollow tobacco section directly to the filter unit. The filter unit cannot adequately filter the smoke within the limited time, resulting in insufficient filtration and affecting the smoking experience. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a multi-stage heated cigarette. Through the stepped channel structure and the arrangement of several semi-circular holes, the smoke filtration effect can be improved, ensuring that the smoke is fully filtered within a limited time, preventing insufficiently filtered smoke from being inhaled into the respiratory tract, and ensuring the smoking experience.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-segment heated cigarette includes a heating segment, a filter segment, and a guide member, wherein the heating segment is disposed at one end of the guide member, and the filter segment is disposed at one end of the heating segment;

[0008] The filter section includes a filter rod body and a filter nozzle rod. A filter nozzle rod is provided at one end of the filter rod body. A central hole is provided in the middle of the filter rod body. A plurality of semi-circular holes are provided at intervals around the central hole on the periphery of the filter rod body. A first coating layer is provided on the outer side of the filter rod body.

[0009] As a further technical solution, the heating section includes a smoke-generating carrier, a hollow component, and a second covering layer. The smoke-generating carrier has a circular hole on its inner side, and the hollow component is disposed inside the circular hole.

[0010] As a further technical solution, the ratio of the cross-sectional area of ​​the hollow component to the cross-sectional area of ​​the central hole is between 0.5 and 0.75.

[0011] As a further technical solution, the hollow component is provided with a heating cavity.

[0012] As a further technical solution, a second coating layer is provided on the outer side of the smoke-generating carrier.

[0013] As a further technical solution, the first and second coating layers are made of molded paper.

[0014] As a further technical solution, the guide member is provided with a guide hole, and the inner wall surface of the guide hole is provided with heat insulation material.

[0015] As a further technical solution, the length of the guide member is less than or equal to the length of the heating section.

[0016] As a further technical solution, the length of the guide member is less than or equal to the length of the filter section.

[0017] As a further technical solution, the filter rod body is made of cellulose acetate material; the filter tip rod is made of any one of cellulose acetate, acrylonitrile fiber, and polypropylene fiber.

[0018] Compared with the prior art, the advantages and positive effects of this utility model are:

[0019] This invention comprises a heating section, a filtering section, and a guide component. The filter rod body of the filtering section has a central hole with a different cross-sectional area than the hollow core of the heating section, forming a stepped structure. As the flue gas flows through this stepped structure, the abrupt shape change alters the flow direction of the flue gas, easily creating vortices at corners, thus reducing the flow velocity and increasing the time the flue gas spends within the filter rod body, allowing sufficient filtration time. Furthermore, several semi-circular holes are arranged around the central hole, allowing the flue gas to flow through multiple channels. These multiple flow channels increase the contact area and contact time between the flue gas and the filter material, enabling more thorough interception and adsorption of tar, nicotine, and other substances in the flue gas, thereby improving the filtration effect. The guide component ensures that the heating element of the heated smoke device is accurately inserted into the center of the smoke-generating carrier, ensuring optimal heating performance.

[0020] The stepped channel structure and the setting of several semi-circular holes can improve the smoke filtration effect, ensure that the smoke is fully filtered within a limited time, and prevent insufficiently filtered smoke from being inhaled into the respiratory tract, thus ensuring the taste of the smoke. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is an overall structural diagram of the multi-segment heated cigarette of this utility model;

[0023] Figure 2 This is a cross-sectional view of the heating section of this utility model;

[0024] Figure 3 This is a structural diagram of the filter section of this utility model;

[0025] Figure 4 This is a cross-sectional view of the filter section of this utility model.

[0026] In the figure: 1. Smoke-generating carrier; 2. Hollow core component; 21. Heating chamber; 3. Second coating layer; 4. Guide component; 41. Guide hole; 5. Filter rod body; 51. Center hole; 52. Semicircular hole; 53. First coating layer; 6. Filter tip rod. Detailed Implementation

[0027] 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 herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0028] Current heated cigarettes typically feature a smoke-generating carrier, which is heated by a heating element in the device. However, misalignment of the heating element during insertion can occur, preventing accurate placement in the center of the carrier and affecting heating. The carrier has an outer covering and a hollow tobacco section on its inner side, with a filter at one end. During inhalation, the hollow tobacco section is inserted into the heating element, heating the carrier to a certain temperature to produce smoke. However, current filters have limited length. During inhalation, the smoke generated by the heating element easily passes through the heated space in the hollow tobacco section directly to the filter unit. The filter unit cannot adequately filter the smoke within the limited time, resulting in insufficient filtration and affecting the smoking experience.

[0029] Example 1:

[0030] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses a multi-segment heated cigarette, such as... Figure 1 As shown, it includes a heating section, a filtering section, and a guide member 4. The heating section is provided at one end of the guide member 4, and the filtering section is provided at the other end of the heating section.

[0031] The filter section includes a filter rod body 5 and a filter nozzle rod 6. The filter nozzle rod 6 is provided at one end of the filter rod body 5. A central hole 51 is provided in the middle of the filter rod body 5. Several semi-circular holes 52 are provided at intervals around the periphery of the filter rod body 5. The semi-circular holes 52 are arranged around the central hole 51. A first covering layer 53 is provided on the outer side of the filter rod body 5.

[0032] Specifically, the filter rod body 5 of the filtration section has a central hole 51 with a cross-sectional area that is different from that of the hollow part 2 of the heating section, thus forming a stepped structure. When the flue gas flows, it passes through the stepped structure. Due to the abrupt change in shape at the step, the flue gas flow direction will change. Vortexes are easily formed at the corners, which will reduce the flow speed of the flue gas and increase the time of the flue gas in the filter rod body 5, so that the flue gas has sufficient time to be filtered.

[0033] Furthermore, several semi-circular holes 52 are arranged around the central hole 51, allowing smoke to flow through multiple channels. These multiple flow channels increase the contact area and time between the smoke and the filter material, enabling tar, nicotine, and other substances in the smoke to be more fully intercepted and adsorbed, thereby improving the filtration effect. The stepped channel structure and the arrangement of the semi-circular holes 52 enhance the smoke filtration effect, ensuring that the smoke is fully filtered within a limited time, preventing insufficiently filtered smoke from being inhaled into the respiratory tract, and preserving the smoking experience.

[0034] Specifically, the filter rod 6 is made of cellulose acetate and has a cylindrical structure. The filter rod 6 further filters harmful components in the smoke, ensuring effective filtration. The filter rod 6 has a coating layer on its outer side, which is made of molded paper.

[0035] The ratio of the cross-sectional area of ​​the hollow component 2 to the cross-sectional area of ​​the central hole 51 is between 0.5 and 0.75. Specifically, the ratio of the cross-sectional area of ​​the hollow component 2 to the cross-sectional area of ​​the central hole 51 is set to ensure a reasonable space distribution between the heating section and the filtering section, which satisfies the insertion requirements of the heating element while avoiding a decrease in heat transfer efficiency due to the material of the smoke carrier 1 being too thin because the cavity is too large; and optimizes the airflow path. Within this ratio range, the flue gas velocity and suction resistance can be balanced, so that the flue gas forms a laminar flow between the heating cavity 21 and the filtering section, improving the uniformity of flue gas mixing.

[0036] The heating section includes a smoke-generating carrier 1, a hollow component 2, and a second covering layer 3. The smoke-generating carrier 1 has a circular hole on its inner side, and the hollow component 2 is housed within the hole. A heating chamber 21 is located within the hollow component 2. The second covering layer 3 is located on the outer side of the smoke-generating carrier 1. Both the first covering layer 53 and the second covering layer 3 are made of formed paper. Specifically, the formed paper provides mechanical support to prevent the cigarette from deforming during smoking or heating. The formed paper also blocks external moisture or contaminants, extending the cigarette's shelf life.

[0037] Specifically, the hollow component 2 ensures the fit between the heating element and the cavity wall, preventing heat loss while maintaining the overall mechanical strength of the cigarette.

[0038] The guide member 4 has a guide hole 41, and the inner wall of the guide hole 41 is lined with heat-insulating material. The length of the guide member 4 is less than or equal to the length of the heating section. The length of the guide member 4 is less than or equal to the length of the filter section. Specifically, the design of the guide hole 41 of the guide member 4 facilitates the precise insertion of the heating appliance, ensures the alignment stability of the heating element and the hollow core 2, and avoids local overheating or uneven heat transfer due to misalignment. The heat-insulating material can block heat conduction from the heating element to the outside of the cigarette, improve the heat energy utilization rate, and at the same time protect the guide member 4 from deformation due to heating of the heating element.

[0039] The filter rod body 5 is made of cellulose acetate material; the filter tip rod 6 is made of any one of cellulose acetate, acrylonitrile fiber, or polypropylene fiber. Specifically, cellulose acetate material has excellent filtration performance, effectively filtering harmful components in smoke and reducing the content of substances such as tar and nicotine. It also has good thermal stability, remaining stable within a certain temperature range and not easily deformed or decomposed by heat.

[0040] Acrylonitrile fibers have a small diameter and a large specific surface area, which increases the contact area with flue gas and improves the interception efficiency of particulate matter and aerosols. Polypropylene fibers have a small diameter and a loose structure, which can form a complex pore network, effectively capturing impurities such as particulate matter and aerosols in flue gas.

[0041] Specifically, the filter rod 6 of the filter section can be replaced with either a concentric circle rod or a porous rod to form a four-section structure, which allows the flue gas to be cooled to a suitable temperature and has sufficient time to be filtered.

[0042] In actual production, the four-section structure of this embodiment can be produced separately. For example, the guide 4 and the heating section can be made into a two-section structure, and the filter rod body 5 and the filter rod 6 can be made into a two-section structure. The two two-section structures are joined together by a joining machine to produce heated cigarettes of this type, i.e., the 2+2 production mode. In other embodiments of this utility model, the 1+3 mode or the 3+1 mode can also be adopted, preferably the 2+2 mode or the 1+3 mode.

[0043] Specifically, guide 4 is the far end of the nozzle, and the other end of guide 4 is the near end of the nozzle. The surface of the cover at the near end of the nozzle is marked with the product logo, so that the end to be inserted into the heating element can be accurately identified during use, preventing incorrect insertion.

[0044] Example 2:

[0045] Based on Example 1, any one of the following structures can be added to one end of the filter section: cigarette filter rod 6, concentric circle filter rod, spiral cooling structure, hollow filter rod, and porous rod, to form a five-section structure, further improving the filtration effect, allowing the smoke to be cooled to a suitable temperature, and giving the smoke sufficient time to be filtered.

[0046] Specifically, concentric filter rods typically consist of an inner filter rod and an outer filter rod surrounding it, forming a cylindrical shape with the centers of the inner and outer filter rods coinciding. The outer filter rod is generally formed by wrapping cellulose acetate fibers with outer forming paper, while the inner filter rod is formed by wrapping polylactic acid fibers with inner forming paper. Concentric filter rods can reduce flue gas temperature. The polylactic acid fibers have excellent heat adsorption properties; when flue gas passes through, most of it passes through the small circles formed by the polylactic acid fibers, adsorbing a large amount of heat carried by the flue gas and effectively reducing its temperature.

[0047] The hollow filter rod is configured as a hollow tubular structure with the same diameter as the concentric annular cavity structure along the axial direction. Several vent holes are set on the tube wall, so that external air can enter the inner cavity of the hollow filter rod through the vent holes during the suction process, thereby further cooling the flue gas.

[0048] The porous filter rod is designed with multiple flue gas channels arranged along the axial direction. The diameter of the multiple flue gas channels is smaller than the diameter of the heating chamber. After the flue gas passes through the concentric ring cavity structure, it enters the porous filter rod, which realizes the diversion and acceleration of the flue gas. The flue gas achieves collision filtration at the contact end of the two structures. After entering the multiple flue gas channels, the flue gas is mixed due to the smaller diameter of the flue gas channels, which further improves the mixing effect of the flue gas and the smoking taste.

[0049] The spiral cooling component has baffles at both ends, with vent holes on the baffles. A spiral structure is set between the two baffles to turbulent the flue gas and increase the flow path of the flue gas to achieve cooling.

[0050] In actual production, the five-section structure of this embodiment can be produced separately. For example, the guide 4 and the heating section can be made into a two-section structure, and the filter rod body 5 and the filter tip rod 6 can be made into a three-section structure. Then, the two-section structure and the three-section structure can be spliced ​​together, that is, heated cigarettes of this structure type can be produced by splicing with a splicing machine. This is the 3+2 production mode. In other embodiments of this utility model, the 2+3 mode, 1+2+2 mode, 1+4 mode, 4+1 mode, etc. can also be used for production. The 3+2 mode or the 1+4 mode is preferred.

[0051] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A multi-stage heated cigarette, characterized in that, It includes a heating section, a filtering section, and a guide member, wherein the heating section is provided at one end of the guide member, and the filtering section is provided at one end of the heating section; The filter section includes a filter rod body and a filter nozzle rod. A filter nozzle rod is provided at one end of the filter rod body. A central hole is provided in the middle of the filter rod body. A plurality of semi-circular holes are provided at intervals around the central hole on the periphery of the filter rod body. A first coating layer is provided on the outer side of the filter rod body.

2. The multi-segment heated cigarette as described in claim 1, characterized in that, The heating section includes a smoke-generating carrier, a hollow component, and a second covering layer. The smoke-generating carrier has a circular hole on its inner side, and the hollow component is disposed inside the circular hole.

3. A multi-segment heated cigarette as described in claim 2, characterized in that, The ratio of the cross-sectional area of ​​the hollow component to the cross-sectional area of ​​the central hole is between 0.5 and 0.

75.

4. A multi-segment heated cigarette as described in claim 2, characterized in that, The hollow component has a heating chamber inside.

5. A multi-segment heated cigarette as described in claim 2, characterized in that, A second covering layer is provided on the outside of the smoke-generating carrier.

6. A multi-segment heated cigarette as described in claim 1, characterized in that, The first and second coating layers are made of molded paper.

7. A multi-segment heated cigarette as described in claim 1, characterized in that, The guide member has a guide hole, and the inner wall of the guide hole is provided with heat insulation material.

8. A multi-segment heated cigarette as described in claim 1, characterized in that, The length of the guide member is less than or equal to the length of the heating section.

9. A multi-segment heated cigarette as described in claim 1, characterized in that, The length of the guide is less than or equal to the length of the filter section.

10. A multi-segment heated cigarette as described in claim 1, characterized in that, The filter rod body is made of cellulose acetate material; the filter tip rod is made of any one of cellulose acetate, acrylonitrile fiber, and polypropylene fiber.

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