Aerosol-generating product and aerosol-generating system
The aerosol generation article with a tail plug and temperature drop cavity addresses residue and temperature issues in heating devices by cleaning and cooling the heating element, ensuring effective operation and user experience.
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- SHENZHEN FIRST UNION TECH CO LTD
- Filing Date
- 2024-09-18
- Publication Date
- 2026-06-10
AI Technical Summary
Conventional heating devices for smoking articles face issues such as residue accumulation and plug burning due to high temperatures, leading to unpleasant odors and loss of functionality.
An aerosol generation article with a tail plug and temperature drop cavity design that cleans the heating element by wiping it during withdrawal and cools it to within a safe temperature range, preventing residue fall and plug damage.
Effectively prevents residue from falling into the device, cleans the heating element, and maintains the plug's functionality by keeping it within a safe temperature range.
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Abstract
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority to Chinese Patent Application No. 202311290013.2, filed with the China National Intellectual Property Administration on September 28, 2023 and entitled "AEROSOL GENERATION ARTICLE AND AEROSOL GENERATION SYSTEM", which is incorporated herein by reference in its entirety.TECHNICAL FIELD
[0002] Embodiments of this application relate to the field of heat-not-burn aerosol generation technologies, and in particular, to an aerosol generation article and an aerosol generation system.BACKGROUND
[0003] During use of a smoking article (for example, cigarettes and cigars), tobacco is burnt to generate tobacco smoke. Attempts are made to replace these tobacco-burning products by manufacturing products that release compounds without burning tobacco.
[0004] An example of such products is a heating device, which releases compounds by heating rather than burning materials. For example, the material may be an aerosol generation article including tobacco-containing or other non-tobacco products. These non-tobacco products may or may not include nicotine.
[0005] In a conventional heating device, a smoking article is usually heated by inserting a heating element into the smoking article. However, during a process of heating the smoking article by the heating element, a residue of the smoking article easily falls into the heating device, thereby affecting user experience.
[0006] Based on the above, in some smoking articles, a plug is provided to support the tobacco. The heating element needs to pass through the plug before being inserted into the tobacco, so as to prevent a residue of the tobacco from falling into the heating device through the plug when the heating element is pulled out. However, a relatively high temperature is usually caused when the heating element heats the tobacco. The temperature usually exceeds a tolerance temperature of the plug, which easily causes the plug to be burned by the heating element. The following two problems may be caused. 1. The plug sticks to the heating element, and detaches from a cigarette with the heating element when the heating element is pulled out, thereby losing an intended function of the plug. 2. The plug generates an unpleasant odor, which not only affects smoking experience but also generates a harmful substance. SUMMARY
[0007] This application provides an aerosol generation article and an aerosol generation system, to effectively clean a heating element.
[0008] An embodiment of this application provides an aerosol generation article, including: a wrapper; a filter, allowing airflow to pass through and arranged in the wrapper; an aerosol-forming substrate, located in the wrapper, and configured to generate an aerosol when being heated by a heating element; and a tail plug, located in the wrapper, and configured to be penetrated by the heating element when the heating element contacts the aerosol-forming substrate, and wipe the heating element when the tail plug is withdrawn from the heating element, where a temperature drop cavity is provided between the tail plug and the aerosol-forming substrate, and when the heating element contacts the aerosol-forming substrate, the temperature drop cavity surrounds the heating element, and the temperature drop cavity is configured to reduce a temperature of the heating element surrounded thereby.
[0009] An embodiment of this application provides an aerosol generation system, including the aerosol generation article, and further including the heating element and a bottom base for fixing the heating element, where the heating element includes a heating portion and a cooling portion located between the heating portion and the bottom base: at least part of the heating portion is configured to penetrate the tail plug and the temperature drop cavity and contact the aerosol-forming substrate, and at least part of the cooling portion is arranged in the tail plug and the temperature drop cavity.
[0010] According to the foregoing aerosol generation article and the aerosol generation system, the heating element penetrates the tail plug and the temperature drop cavity when contacting the aerosol-forming substrate. The fitting between the heating element and the tail plug causes the tail plug to wipe the heating element when the tail plug is withdrawn from the heating element, and the temperature drop cavity is located between the tail plug and the aerosol-forming substrate. In this way, not only the residual in the aerosol-forming substrate can be prevented from falling, but also the heating element can be cleaned. At least part of the residuals of the aerosol-forming substrate adhered to the heating element can be removed, and part of the heating element can further be cooled through the temperature drop cavity, so that the contact temperature between the heating element and the tail plug can be reduced to be in the tolerance range of the tail plug. The tail plug can be prevented from being damaged by high-temperature cauterization of the heating element and prevented from sticking to the heating element, thereby ensuring that the tail plug implements an intended function thereof.BRIEF DESCRIPTION OF THE DRAWINGS
[0011] One or more embodiments are illustratively described with reference to the figures in the corresponding accompanying drawings, and these illustrative descriptions are not to limit the embodiments. Elements having same reference numerals in the accompanying drawings are denoted as similar elements, and the figures in the accompanying drawings are not drawn to scale, unless particularly stated otherwise. FIG. 1 is a schematic diagram of an aerosol generation system according to an embodiment; FIG. 2 is a schematic diagram of an aerosol generation system according to another embodiment; FIG. 3 is a schematic diagram of an aerosol generation system according to still another embodiment; FIG. 4 is a schematic diagram of a tail plug according to an embodiment; FIG. 5 is a schematic diagram of a tail plug according to another embodiment; FIG. 6 is a schematic diagram of a tail plug according to another embodiment; FIG. 7 is a schematic diagram of a tail plug according to another embodiment; FIG. 8 is a schematic diagram of a tail plug according to another embodiment; FIG. 9 is a schematic diagram of a tail plug according to another embodiment; FIG. 10 is a schematic diagram of a tail plug according to another embodiment; FIG. 11 is a schematic diagram of a tail plug according to another embodiment; FIG. 12 is a schematic exploded view of a tail plug according to an embodiment; FIG. 13 is a schematic diagram of a first portion of a tail plug according to an embodiment; FIG. 14 is a schematic diagram of a first portion of a tail plug according to an embodiment; FIG. 15 is a schematic diagram of a first portion of a tail plug according to an embodiment; FIG. 16 is a schematic diagram of a first portion of a tail plug according to an embodiment; and FIG. 17 is a schematic diagram of an aerosol generation system according to still another embodiment.
[0012] In the drawings: 1. Aerosol generation article; 11. Aerosol-forming substrate; 12. Wrapper; 13. Filter; 14. Spacing; 15. Tail plug; 151. Insertion hole; 152. First portion; 153. Second portion; 16. Temperature drop cavity 2. Heating element. DETAILED DESCRIPTION
[0013] Technical solutions in embodiments of this application are clearly and completely described below with reference to accompanying drawings in the embodiments of this application. Apparently, the described embodiments are merely some rather than all of the embodiments of this application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of this application without creative efforts fall within the protection scope of this application.
[0014] Terms "first", "second", and "third" in this application are merely intended for a purpose of description, and shall not be understood as an indication or implication of relative importance or implicit indication of the quantity or order of indicated technical features. All directional indications (for example, up, down, left, right, front, and back) in the embodiments of this application are only used for explaining relative position relationships, movement situations, or the like among the various components in a posture (as shown in the drawings). If the posture changes, the directional indication changes accordingly. In addition, terms "include", "have", and any variant thereof are intended to cover a non-exclusive inclusion. For example, a process, a method, a system, a product, or a device that includes a series of steps or units is not limited to the listed steps or units, and instead, further optionally includes a step or unit that is not listed, or further optionally includes another step or unit that is intrinsic to the process, the method, the product, or the device.
[0015] The "embodiment" mentioned in the specification means that particular features, structures, or characteristics described with reference to the embodiments may be included in at least one embodiment of this application. The phrase appearing at various locations in this specification does not necessarily indicate a same embodiment, and is not an independent or alternative embodiment exclusive to another embodiment. A person skilled in the art explicitly or implicitly understands that the embodiments described in the specification may be combined with other embodiments.
[0016] It should be noted that when an element is considered to be "fixed" to an other element, the element may be directly on the other element or an intermediate element may exist. When an element is considered to be "connected to" another element, the element may be directly connected to another element, or one or more intermediate elements may simultaneously exist therebetween. Terms "vertical", "horizontal", "left", "right", and similar expressions used in this specification are only for purpose of illustration, and do not represent a unique implementation.
[0017] Reference may be made to FIG. 1 to FIG. 3 and FIG. 17. An embodiment of this application provides an aerosol generation article 1. As used herein, the term "aerosol generation article 1" refers to an article including an aerosol-forming substrate 11. When being heated, the aerosol-forming substrate 11 releases a volatile compound that can form an aerosol. In an embodiment, the aerosol generation article 1 may be removably coupled to an aerosol generation device. The aerosol generation article 1 may be disposable or reusable.
[0018] The aerosol-forming substrate 11 may include a solid aerosol-forming substrate. The solid aerosol-forming substrate may include a tobacco-containing material. The tobacco-containing material includes a volatile tobacco aroma compound released from the aerosol-forming substrate when being heated. The solid aerosol-forming substrate may include a non-tobacco material. The solid aerosol-forming substrate may include the tobacco-containing material and the non-tobacco material.
[0019] The aerosol-forming substrate 11 may include a liquid aerosol-forming substrate. The liquid aerosol-forming substrate may include a liquid that contains a tobacco substance with a volatile tobacco aroma ingredient, and may further be a liquid that contains a non-tobacco substance. The liquid aerosol-forming substrate may include water, a solvent, ethanol, a plant extract, a perfume, a fragrance, or a vitamin mixture. The perfume may include a betel nut extract, menthol, peppermint, green peppermint oil, various fruit fragrance ingredients, and the like, but is not limited thereto. The fragrance may include ingredients that can provide various fragrances or flavors to a user. The vitamin mixture may be a mixture mixed with at least one of a vitamin A, a vitamin B, a vitamin C, and a vitamin E, but is not limited thereto.
[0020] Along an axial direction of the aerosol generation article 1, the aerosol-forming substrate 11 may have a predetermined length ranging from 10 mm to 20 mm, for example, a length d1 of approximately 10 mm or a length d1 of approximately 12 mm.
[0021] The aerosol generation article 1 may be substantially in a shape of a cylinder. The aerosol generation article 1 may have an overall length between approximately 30 mm and approximately 100 mm. The aerosol generation article 1 may have a diameter between approximately 5 mm and approximately 12 mm, typically, for example, a diameter of 5.4 mm or a diameter of 7.2 mm.
[0022] The aerosol generation article 1 includes a wrapper 12 and a filter 13. The wrapper 12 may be constructed as a shape of a tube, and the filter 13 and the aerosol-forming substrate 11 may be accommodated in the wrapper 12 that is in the shape of a tube.
[0023] The wrapper 12 may be cigarette paper, or the wrapper 12 may include tobacco.
[0024] The filter 13 may be arranged at a suction nozzle end of the aerosol generation article 1, the filter 13 allows airflow to pass through, and the suction nozzle end of the aerosol generation article 1 may be held in a mouth of a user. The filter 13 may be made of any suitable filtering material. A plurality of such filtrating materials are known in the art. For example, the suitable filtrating material may be made of a cellulose acetate tow of a specific length. Along the axial direction of the wrapper 12, the filter 13 may have a length between approximately 5 mm and approximately 14 mm, for example, may have a length of approximately 7 mm.
[0025] In the wrapper 12, a spacing 14 may be defined between the filter 13 and the aerosol-forming substrate 11. Along the axial direction of the wrapper 12, the spacing 14 may be in a range from approximately 5 mm to 25 mm, for example, may be approximately 18 mm.
[0026] Reference may be made to FIG. 1 to FIG. 3 and FIG. 17. An embodiment of this application provides an aerosol generation system, including an aerosol generation article 1 and an aerosol generation device that can be engaged with the aerosol generation article 1 to cause the aerosol generation article 1 to generate an aerosol. The aerosol generation device is provided with a heating element 2. When the aerosol generation article 1 is engaged with the aerosol generation device, at least part of the heating element 2 can be inserted into the aerosol generation article 1 and contact the aerosol-forming substrate 11. Heat released by the heating element 2 can cause the aerosol-forming substrate 11 to generate the aerosol.
[0027] The aerosol-forming substrate 11 may contract and become loose in the wrapper 12 after being heated. In this environment, a fragment of the aerosol-forming substrate 11 may easily detach from the wrapper 12 and fall into the aerosol generation device when the heating element 2 is withdrawn. Further, the fragment of the aerosol-forming substrate 11 may stick to the heating element 2. A residue of the aerosol-forming substrate 11 or a residue derived from the aerosol-forming substrate 11 may be deposited or formed in the heating element 2.
[0028] To keep an inside of the aerosol generation device and a surface of the heating element 2 clean, the aerosol generation article 1 provided in this application further includes a tail plug 15. The tail plug 15 is located in the wrapper 12, and the aerosol-forming substrate 11 is arranged between the tail plug 15 and the filter 13. The tail plug 15 may be arranged adjacent to an end portion of the aerosol generation article 1. The tail plug 15 may be fixed to the wrapper 12 in a manner such as gluing. The tail plug 15 is configured to be penetrable by the heating element 2, and the heating element 2 can contact the aerosol-forming substrate 11 only after passing through the tail plug 15. During a process of withdrawing the heating element 2 from the aerosol generation article 1, the tail plug 15 can intercept the aerosol-forming substrate 11, so as to prevent at least part of the residue and the fragment of the aerosol-forming substrate 11 from falling out of the aerosol generation article 1.
[0029] In an embodiment, the tail plug 15 is configured to facilitate piercing by the heating element 2. Before being penetrated by the heating element 2, the tail plug 15 may have good uniformity or integrity. After being penetrated by the heating element 2, the tail plug 15 is subjected to fragmentation or shows a trace of being pierced. As a result, during the process of withdrawing the heating element 2 from the aerosol generation article 1, the tail plug 15 can wipe the heating element 2, thereby cleaning a surface of the heating element 2.
[0030] In an embodiment, an insertion hole 151 is formed in the tail plug 15. When the heating element 2 penetrates the tail plug 15, part of the heating element 2 is located in the insertion hole 151, and the insertion hole 151 causes the heating element 2 to easily penetrate the tail plug 15. A shape of the insertion hole 151 may be consistent with a shape of the heating element 2. For example, if the heating element 2 is substantially in a shape of a sheet, the insertion hole 151 may be substantially in a shape of a slit. For example, if the heating element 2 is substantially in a shape of a cylinder, the insertion hole 151 may be substantially a circular hole. A size of the insertion hole 151 may be less than a size of the heating element 2, so that the tail plug 15 can contact or even press the heating element 2 located in the insertion hole 151. As a result, during the process of withdrawing the heating element 2 from the aerosol generation article 1, the tail plug 15 can wipe the heating element 2, thereby cleaning the surface of the heating element 2.
[0031] In an embodiment, the tail plug 15 includes a flexible material, so that at least part of the tail plug 15 deforms when being penetrated by the heating element 2, which helps increase a force with which the tail plug 15 wipes the heating element 2, thereby helping improve a cleaning effect of the heating element 2. It should be noted that, that the tail plug 15 includes a flexible material is optional but not mandatory.
[0032] A temperature at which the aerosol-forming substrate 11 generates the aerosol is usually greater than 200°C. In some embodiments, to cause the aerosol-forming substrate 11 to generate the aerosol, the heating element 2 has a heating temperature of approximately 270°C or approximately 375°C, or another temperature greater than 200°C.
[0033] In an embodiment, the aerosol generation device includes a bottom base. The heating element 2 includes a heating portion and a cooling portion. The heating element 2 is fixed to the bottom base. The cooling portion is located between the heating portion and the bottom base. The heating portion is configured to generate heat. The heating element 2 mainly heats the aerosol-forming substrate 11 through the heat released by heating of the heating portion, so that the aerosol-forming substrate 11 generates the aerosol. The cooling portion is arranged adjacent to the heating portion, and is configured to not generate the heat or is configured to have a relatively low heating temperature. An increase in a temperature of the cooling portion may be caused by absorbing the heat of the heating portion. During operation of the heating element 2, the temperature of the cooling portion is lower than a temperature of the heating portion.
[0034] The heating portion is configured to contact the aerosol-forming substrate 11, and at least part of the cooling portion is configured to contact the tail plug 15. Therefore, the tail plug 15 can be prevented from being burned by the heating portion at a high temperature. In an example, the temperature of the cooling portion is less than 200°C, or the temperature of the cooling portion is in a temperature tolerance range of the tail plug 15. Therefore, a contact temperature between the cooling portion and the tail plug 15 is less than 200°C, or a contact temperature between the cooling portion and the tail plug 15 is in the temperature tolerance range of the tail plug 15.
[0035] In an embodiment, a temperature drop cavity 16 is provided between the tail plug 15 and the aerosol-forming substrate 11. When the heating element 2 contacts the aerosol-forming substrate 11, the heating element 2 penetrates the tail plug 15 and penetrates the temperature drop cavity 16. In addition, the temperature drop cavity 16 surrounds part of the heating element 2. The temperature drop cavity 16 is configured to reduce the temperature of the heating element 2 surrounded by the temperature drop cavity, so that a contact temperature between the heating element 2 and the tail plug 15 can be reduced to below 200°C, or can be reduced to be in the temperature tolerance range of the tail plug 15. In this way, the tail plug 15 is prevented from being burned by the heating element 2 at the high temperature, and it is ensured that the tail plug 15 normally plays a function and a role thereof.
[0036] In an example, the temperature drop cavity 16 provides the heating element 2 with a temperature drop space along the axial direction of the aerosol generation article 1, so that a position at which the heating element 2 contacts the tail plug 15 has a lower temperature, and is further below a tolerance temperature of the tail plug 15, for example, below 200°C.
[0037] In an example, the temperature drop cavity 16 is an empty cavity, and is in fluid communication with the aerosol-forming substrate 11. The air may enter the temperature drop cavity 16, so that the air can absorb and carry away part of the heat from the heating element 2 in the temperature drop cavity 16, to reduce the temperature of the heating element 2.
[0038] More specifically, a pore is provided on the tail plug 15. The pore allows the air to pass through the tail plug 15. The pore is in fluid communication with an outside and the temperature drop cavity 16. The temperature drop cavity 16 is in fluid communication with the pore and the aerosol-forming substrate 11. During inhalation, cold air outside passes through the pore to enter the temperature drop cavity 16, and then enters the aerosol-forming substrate 11. When the cold air enters the temperature drop cavity 16, the cold air may absorb part of the heat from the heating element 2 in the temperature drop cavity 16, thereby forming hot air. Then, the hot air enters the aerosol-forming substrate 11, to prevent a sharp temperature drop in the aerosol-forming substrate 11 caused by the inhalation. In addition, when the cold air enters the temperature drop cavity 16, heat loss on the heating element 2 in the temperature drop cavity 16 is accelerated. Therefore, a temperature gradient on the heating element 2 can be significantly increased. A contact temperature between the heating element 2 and the tail plug 15 is in a suitable temperature range, and the tail plug 15 is protected from being burned.
[0039] Alternatively, an air inlet hole is provided on the wrapper 12, and the temperature drop cavity 16 is in fluid communication with the air inlet hole and the aerosol-forming substrate 11. During the inhalation, the cold air outside passes through the air inlet hole to enter the temperature drop cavity 16, and then enters the aerosol-forming substrate 11. When the cold air outside enters the temperature drop cavity 16, the temperature of the heating element 2 in the temperature drop cavity 16 is reduced. It may be understood that in another example, the cold air outside may pass through the air inlet hole, pass through the pore on the tail plug 15, enter the temperature drop cavity 16, and then enters the aerosol-forming substrate 11.
[0040] The temperature drop cavity 16 is the empty cavity, and in fluid communication with the outside and the aerosol-forming substrate 11. Therefore, it is detected that along the axial direction of the wrapper 12, the temperature decreases by 20°C to 30°C each time a spacing between the heating element 2 in the temperature drop cavity 16 and the aerosol-forming substrate 11 increases by 1 mm. In other words, each time a thickness d2 of the temperature drop cavity 16 along the axial direction of the wrapper 12 increases by 1 mm, the contact temperature between the heating element 2 and the tail plug 15 is reduced by 20°C to 30°C.
[0041] In an example, reference may be made to FIG. 2. The thickness d2 of the temperature drop cavity 16 along the axial direction of the wrapper 12 ranges from 1 mm to 10 mm, preferably ranging from 1 mm to 4 mm. The contact temperature between the heating element 2 and the tail plug 15 is reduced by at least 20°C relative to the contact temperature between the heating element 2 and the aerosol-forming substrate 11. The contact temperature between the heating element 2 and the tail plug 15 does not exceed 200°C.
[0042] In an example, when the heating element 2 contacts the aerosol-forming substrate 11, at least part of the cooling portion of the heating element 2 is located in the temperature drop cavity 16, and the cooling portion of the heating element 2 contacts the tail plug 15.
[0043] In an embodiment, reference may be made to FIG. 3. An inner surface of the wrapper 12 defines at least part of a boundary of the temperature drop cavity 16. The tail plug 15 and the aerosol-forming substrate 11 may be spaced apart from each other without any contact. Alternatively, reference may be made to FIG. 17. The tail plug 15 supports a central region of the aerosol-forming substrate 11, and the temperature drop cavity 16 is formed between a side edge of the tail plug 15 and the wrapper 12.
[0044] In an embodiment, referring to FIG. 1 and FIG. 2, the tail plug 15 includes a first portion 152 arranged adjacent to the aerosol-forming substrate 11 and a second portion 153 arranged opposite to the first portion 152, and at least part of the temperature drop cavity 16 is formed in the first portion 152. Because the temperature drop cavity 16 can surround the heating element 2, the first portion 152 is located at a periphery of the heating element 2 and is spaced apart from the heating element 2 when the heating element 2 contacts the aerosol-forming substrate 11. The second portion 153 is configured to wipe the heating element 2 when the tail plug 15 is withdrawn from the heating element 2.
[0045] More specifically, in an example, the second portion 153 is spaced apart from the aerosol-forming substrate 11, the temperature drop cavity 16 is located between the second portion 153 and the aerosol-forming substrate 11, and the heating element 2 penetrates the second portion 153 and enters the temperature drop cavity 16. The second portion 153 can form an occlusion, to prevent the aerosol-forming substrate 11 or a fragment or a residue of the aerosol-forming substrate 11 from falling out of the wrapper 12.
[0046] The second portion 153 may be solid, and may be pierced by the heating element 2. Alternatively, the insertion hole 151 may be arranged on the second portion 153, where a diameter of the insertion hole 151 is smaller than an inner diameter of the temperature drop cavity 16 or is smaller than an inner diameter of the first portion 152.
[0047] A pore that allows air to pass through may be provided on the second portion 153. The pore is in fluid communication with the outside and the temperature drop cavity 16, or the pore is in fluid communication with the outside and the first portion 152. The air outside enters the temperature drop cavity 16 through the pore in the second portion 153 or enters the pore in the first portion 152, and finally enters the aerosol-forming substrate 11.
[0048] A material of the second portion 153 may be consistent with a material of the filter 13, or the material of the second portion 153 may include, but is not limited to, a wood pulp fiber, a chemical fiber, a cotton / linen fiber, a foam material, or a soft porous material.
[0049] To ensure an effect that the second portion 153 cleans the heating element 2, a thickness d3 of the second portion 153 along the axial direction of the wrapper 12 may range from 2 mm to 6 mm.
[0050] In an example, the first portion 152 supports the aerosol-forming substrate 11, and the thickness d2 of the first portion 152 along the axial direction of the wrapper 12 may range from 1 mm to 10 mm, preferably ranging from 1 mm to 4 mm. The first portion 152 is hollow, may be constructed as an annular shape, and may closely adhere to an inner wall of the wrapper 12, to form good support for the wrapper 12 around a periphery of the temperature drop cavity 16, thereby preventing the wrapper 12 around the periphery of the temperature drop cavity 16 from bending or deforming.
[0051] An end of the first portion 152 facing the aerosol-forming substrate 11 may be open, so that the aerosol-forming substrate 11 may define part of the boundary of the temperature drop cavity 16.
[0052] Referring to FIG. 16, an end of the first portion 152 facing the second portion 153 may be provided with an occluding wall 1521. The occluding wall 1521 may be pierced by the heating element 2, or the insertion hole 151 extends through the occluding wall 1521. Referring to FIG. 13 to FIG. 15, the end of the first portion 152 facing the second portion 153 may be open.
[0053] A pore that allows air to pass through is provided on the first portion 152. The pore on the first portion 152 may be in fluid communication with the outside and the temperature drop cavity 16, and the pore on the first portion 152 may be in fluid communication with the aerosol-forming substrate 11 and the second portion 153. A material of the first portion 152 may be the same as or certainly may be different from a material of the second portion 153.
[0054] Referring to FIG. 4 to FIG. 10, the first portion 152 and the second portion 153 may be integrally formed. Referring to FIG. 11 to FIG. 16, the first portion 152 and the second portion 153 are independent of each other, the first portion 152 and the second portion 153 may be configured to separate from each other, or the first portion 152 and the second portion 153 may be engaged in a manner such as gluing to form a whole.
[0055] Referring to FIG. 7 to FIG. 10 and FIG. 14 to FIG. 16, in the axial direction of the wrapper 12, inner diameters of at least two parts of the temperature drop cavity 16 are different. As shown in FIG. 7 and FIG. 14, the temperature drop cavity 16 may be constructed as an inverted boss shape. As shown in FIG. 8 and FIG. 15, the temperature drop cavity 16 may be constructed as an inverted trapezoidal shape. As shown in FIG. 9 and FIG. 16, the temperature drop cavity 16 may be constructed as an inverted arch shape, or the like. In the axial direction of the wrapper 12, an inner diameter of an end of the temperature drop cavity 16 close to the aerosol-forming substrate 11 may be greater than an inner diameter of an end close to the second portion 153.
[0056] Referring to FIG. 6, in the axial direction of the wrapper 12, the inner diameters of the at least two parts of the temperature drop cavity 16 are the same. As shown in FIG. 4 to FIG. 6, the temperature drop cavity 16 may be constructed as a column shape with a uniform inner diameter. The column shape includes a circular cylinder or a square cylinder.
[0057] In an embodiment, the temperature drop cavity 16 is filled with a heat exchange material (not shown in the figure), for example, is filled with a phase change material. The heat exchange material or the phase change material can absorb a temperature of the heating element 2 in the temperature drop cavity 16, thereby reducing the temperature of the heating element 2 in the temperature drop cavity 16, so that the contact temperature between the heating element 2 and the tail plug 15 is less than 200°C or in the temperature tolerance range of the tail plug 15. The phase change material refers to a material that can perform phase change by absorbing the heat.
[0058] The aerosol generation article 1 provided in this application is provided with the tail plug 15. The heating element 2 needs to pass through the tail plug 15 to be inserted into the aerosol-forming substrate 11. The tail plug 15 can prevent the aerosol-forming substrate 11 or the fragment, the residue, or the like of the aerosol-forming substrate 11 from falling into the aerosol generation device when the heating element 2 is withdrawn from the aerosol generation article 1, thereby helping improve user experience and keep the aerosol generation device clean.
[0059] The aerosol generation article 1 provided in this application is provided with the temperature drop cavity 16. The temperature drop cavity 16 is arranged between the aerosol-forming substrate 11 and the tail plug 15. The temperature drop cavity 16 can reduce the temperature of the heating element 2, and prevent a large amount of heat from being transferred to a position where the heating element 2 contacts the tail plug 15, which helps reduce the contact temperature between the heating element 2 and the tail plug 15, so that the tail plug 15 cannot be burned by the high temperature of the heating element 2, thereby operating as expected. Compared with arranging a high-temperature-resistant insulation sleeve in the tail plug 15 to surround the heating element 2 or arranging a heat insulation sleeve on the heating element 2 to isolate the tail plug 15, the temperature drop cavity not only offers a simpler process and higher production efficiency, but also results in lower production costs.
[0060] According to the foregoing aerosol generation article and the aerosol generation system, the heating element 2 penetrates the tail plug 15 and the temperature drop cavity 16 when contacting the aerosol-forming substrate 11. The fitting between the heating element 2 and the tail plug 15 causes the tail plug 15 to wipe the heating element 2 when the tail plug 15 is withdrawn from the heating element 2, and the temperature drop cavity 16 is located between the tail plug 15 and the aerosol-forming substrate 11. In this way, not only the residual in the aerosol-forming substrate 11 can be prevented from falling, but also the heating element 2 can be cleaned. At least part of the residuals of the aerosol-forming substrate 11 adhered to the heating element 2 can be removed, and part of the heating element 2 can further be cooled through the temperature drop cavity 16, so that the contact temperature between the heating element 2 and the tail plug 15 can be reduced to be in the tolerance range of the tail plug 15. The tail plug 15 can be prevented from being damaged by high-temperature cauterization of the heating element 2, thereby ensuring that the tail plug 15 implements an intended function thereof.
[0061] It should be noted that the preferred embodiments of this application are provided in the specification and the accompanying drawings of this application, but are not limited to the embodiments described in this specification. Further, a person of ordinary skill in the art may make improvements or modifications according to the foregoing descriptions, and all of the improvements and modifications shall fall within the protection scope of the appended claims of this application.
Claims
1. An aerosol generation article, comprising: a wrapper; a filter, configured to allow airflow to pass therethrough and arranged in the wrapper; an aerosol-forming substrate, located in the wrapper, and configured to generate an aerosol when being heated by a heating element; and a tail plug, located in the wrapper, and configured to be penetrated by the heating element when the heating element contacts the aerosol-forming substrate, and configured to wipe the heating element when the tail plug is withdrawn from the heating element, wherein a temperature drop cavity is provided between the tail plug and the aerosol-forming substrate, wherein when the heating element contacts the aerosol-forming substrate, the temperature drop cavity surrounds the heating element, and the temperature drop cavity is configured to reduce a temperature of the heating element surrounded by the temperature drop cavity.
2. The aerosol generation article according to claim 1, wherein an inner surface of the wrapper defines at least part of a boundary of the temperature drop cavity.
3. The aerosol generation article according to claim 1, wherein the tail plug comprises a first portion arranged adjacent to the aerosol-forming substrate and a second portion arranged opposite to the first portion, wherein at least part of the temperature drop cavity is formed in the first portion, and the second portion is configured to wipe the heating element when the tail plug is withdrawn from the heating element.
4. The aerosol generation article according to claim 3, wherein the first portion supports the aerosol-forming substrate.
5. The aerosol generation article according to claim 3, wherein: an end of the first portion facing the aerosol-forming substrate is open, and an end of the first portion facing the second portion is provided with an occluding wall; or two opposite ends of the first portion are both open.
6. The aerosol generation article according to claim 3, wherein a thickness of the second portion along an axial direction of the wrapper ranges from 2 mm to 6 mm.
7. The aerosol generation article according to claim 3, wherein: the first portion and the second portion are integrally formed; or the first portion and the second portion are independent of each other.
8. The aerosol generation article according to claim 1, wherein: in an axial direction of the wrapper, inner diameters of at least two parts of the temperature drop cavity are different; or in an axial direction of the wrapper, inner diameters of at least two parts of the temperature drop cavity are the same.
9. The aerosol generation article according to claim 1, wherein a pore is provided on the tail plug, and the temperature drop cavity is in fluid communication with the pore and the aerosol-forming substrate.
10. The aerosol generation article according to claim 1, wherein an air inlet hole is provided on the wrapper, and the temperature drop cavity is in fluid communication with the air inlet hole and the aerosol-forming substrate.
11. The aerosol generation article according to claim 1, wherein a thickness of the temperature drop cavity along an axial direction of the wrapper ranges from 1 mm to 10 mm.
12. The aerosol generation article according to claim 1, wherein: the tail plug is configured to facilitate piercing by the heating element; or an insertion hole for the heating element to penetrate the tail plug is formed in the tail plug.
13. The aerosol generation article according to claim 1, wherein the tail plug comprises a flexible material, so that at least part of the tail plug deforms when being penetrated by the heating element.
14. The aerosol generation article according to claim 1, wherein the tail plug is configured to stop the aerosol-forming substrate when the tail plug is withdrawn from the heating element.
15. An aerosol generation system, comprising: the aerosol generation article according to any one of claims 1 to 14; the heating element; and a bottom base for fixing the heating element, wherein the heating element comprises a heating portion and a cooling portion located between the heating portion and the bottom base, wherein at least part of the heating portion is configured to penetrate the tail plug and the temperature drop cavity and come into contact with the aerosol-forming substrate, and at least part of the cooling portion is arranged in the tail plug and the temperature drop cavity.