Aerosol generating product

Abstract

The embodiment of the invention provides an aerosol generating product. The aerosol generating product comprises an aerosol generating substrate section and a functional section arranged at one end of the aerosol generating substrate section. The functional section at least comprises a cooling section with a variable-diameter channel, the variable-diameter channel extends in the direction deviating from the aerosol generating matrix section, and in the extending direction of the variable-diameter channel, the section size of at least one position of the variable-diameter channel is different from that of other positions of the variable-diameter channel. According to the aerosol generating product provided by the embodiment of the invention, the heat of the aerosol can be better transferred through the inner side wall of the variable-diameter channel, so that the cooling effect can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of smoking products, and in particular to an aerosol generating product. Background Art

[0002] Aerosol generating products generally generate aerosols by heating without burning. Specifically, aerosol generating products are heated by an external heat source to a degree just sufficient to emit a fragrance. Aerosol generating products do not burn, but instead load an atomizer and release the atomizer by heating when in use to form smoke.

[0003] The heating temperature of aerosol generating products during the heating process is relatively high, so the temperature of the generated aerosol is also relatively high. In order to prevent users from "burning their mouths" when inhaling, aerosol generating products generally reduce the temperature of the aerosol by designing a cooling structure.

[0004] However, in the related art, the cooling effect of the cooling structure is relatively poor, which affects the user's smoking experience. Summary of the invention

[0005] In view of this, the embodiments of the present application hope to provide an aerosol generating product that can improve the cooling effect.

[0006] To achieve the above objectives, the present application provides an aerosol generating product, comprising:

[0007] Aerosol generating matrix segment;

[0008] A functional segment is arranged at one end of the aerosol generating substrate segment, and the functional segment at least includes a cooling segment having a variable diameter channel, and the variable diameter channel extends in a direction away from the aerosol generating substrate segment, and along the extension direction of the variable diameter channel, the cross-sectional dimensions at at least one position of the variable diameter channel are different from the cross-sectional dimensions at other positions.

[0009] In one embodiment, the variable diameter channel is arranged inside the temperature reduction section.

[0010] In one embodiment, the variable diameter channel is arranged on the outer side wall of the temperature reduction section.

[0011] In one embodiment, at least a partial area of ​​the variable diameter channel is a variable diameter area whose cross-sectional size gradually decreases or gradually increases along the extension direction.

[0012] In one embodiment, the inner side wall of the variable diameter channel located in the variable diameter area is in a curved shape that bends into the variable diameter channel.

[0013] In one embodiment, the aerosol generating product has a cavity located on the outer peripheral side of the cooling section, and the cooling section has an airway groove, which penetrates the side wall of the variable diameter channel located in the variable diameter area to connect the variable diameter area with the cavity.

[0014] In one embodiment, the airway groove surrounds the circumference of the variable diameter channel.

[0015] In one embodiment, the variable diameter channel has an air flow inlet at one end close to the aerosol generating substrate segment, and has an air flow outlet at one end of the variable diameter channel away from the aerosol generating substrate segment, and the cross-sectional dimension of one of the air flow inlet and the air flow outlet is the maximum cross-sectional dimension of the variable diameter channel, and the cross-sectional dimension of the other is the minimum cross-sectional dimension of the variable diameter channel.

[0016] In one embodiment, the cross-sectional size of the variable-diameter channel gradually decreases or increases from the airflow inlet to the airflow outlet.

[0017] In one embodiment, along the extension direction, the variable diameter channel has an initial section closest to the aerosol generating substrate section and a final section farthest from the aerosol generating substrate section, the initial section has the airflow inlet, and the final section has the airflow outlet.

[0018] In one embodiment, the initial section and the final section are both equal-diameter structures, the cross-sectional dimension of one of the initial section and the final section is the maximum cross-sectional dimension, and the cross-sectional dimension of the other one is the minimum cross-sectional dimension.

[0019] In one implementation, the cross-sectional area ratio of the maximum cross-sectional dimension to the minimum cross-sectional dimension is 2-5:1-2.

[0020] In one embodiment, along the extension direction, the variable diameter channel has an initial section closest to the aerosol generating substrate section and a terminal section farthest from the aerosol generating substrate section; the initial section is a variable diameter structure whose cross-sectional size gradually decreases along the extension direction, and the terminal section is a constant diameter structure, and the maximum value of the cross-sectional size of the initial section is greater than the cross-sectional size of the terminal section.

[0021] In one embodiment, along the extension direction, the variable diameter channel has an initial section closest to the aerosol generating substrate section and a terminal section farthest from the aerosol generating substrate section; the initial section is a constant diameter structure, and the terminal section is a variable diameter structure whose cross-sectional size gradually increases along the extension direction, and the cross-sectional size of the initial section is smaller than the maximum value of the cross-sectional size of the terminal section.

[0022] In one embodiment, along the extension direction, the variable diameter channel has an initial segment closest to the aerosol generating substrate segment and a terminal segment farthest from the aerosol generating substrate segment, and the initial segment and the terminal segment are both variable diameter structures; the cross-sectional dimensions of the initial segment and the terminal segment gradually decrease along the extension direction, and the maximum value of the cross-sectional dimension of the initial segment is greater than the minimum value of the cross-sectional dimension of the terminal segment.

[0023] In one embodiment, along the extension direction, the variable diameter channel has an initial segment closest to the aerosol generating substrate segment and a terminal segment farthest from the aerosol generating substrate segment, and the initial segment and the terminal segment are both variable diameter structures; the cross-sectional dimensions of the initial segment and the terminal segment gradually increase along the extension direction, and the minimum value of the cross-sectional dimension of the initial segment is smaller than the maximum value of the cross-sectional dimension of the terminal segment.

[0024] In one embodiment, along the extension direction, the variable diameter channel has an initial section closest to the aerosol generating substrate section, a final section farthest from the aerosol generating substrate section, and a middle section between the initial section and the final section, and the cross-sectional size of the middle section is less than or equal to the maximum cross-sectional size and greater than or equal to the minimum cross-sectional size.

[0025] In one embodiment, the cross-sectional dimensions of the variable-diameter channel change alternately along the extension direction.

[0026] In one embodiment, the cross-sectional size of the variable-diameter channel gradually decreases and then gradually increases along the extension direction.

[0027] In one embodiment, the cross-sectional size of the variable diameter channel gradually increases and then gradually decreases along the extension direction.

[0028] In one embodiment, along the extension direction, the variable diameter channel has at least three equal diameter sections, and the equal diameter sections are arranged alternately according to the size of the cross-sectional dimensions;

[0029] The variable diameter channel further comprises a variable diameter section located between two adjacent equal diameter sections, and a cross-sectional dimension of the variable diameter section transitions from one of the two adjacent equal diameter sections to the other.

[0030] In one embodiment, along the extension direction, the variable diameter channel has at least two variable diameter sections and a constant diameter section located between two adjacent variable diameter sections, and among the two adjacent variable diameter sections, the cross-sectional size of one of the variable diameter sections gradually decreases along the extension direction, and the cross-sectional size of the other variable diameter section gradually increases along the extension direction.

[0031] In one embodiment, along the extension direction, at least a portion of the inner side wall of the variable diameter channel is in a sinusoidal waveform; the inner side wall in the sinusoidal waveform has crests and troughs, and the total number of the crests and the troughs is 5 to 15.

[0032] In one embodiment, the aerosol generating substrate segment is an integral structure having at least one air channel therein, and the air channel runs through at least one of the two opposite ends of the aerosol generating substrate segment along the flow direction of the airflow.

[0033] In one embodiment, the aerosol generating substrate segment and the functional segment are coaxially arranged cylinders, and the extending direction is the axial direction of the aerosol generating substrate segment and the functional segment.

[0034] An embodiment of the present application provides an aerosol generating product, in which a cooling section with a variable diameter channel is arranged in a functional section. Along the extension direction of the variable diameter channel, the cross-sectional dimensions at at least one position of the variable diameter channel are different from the cross-sectional dimensions at other positions. That is to say, there will be areas with relatively large cross-sectional dimensions and areas with relatively small cross-sectional dimensions in the variable diameter channel. The flow rate of the aerosol in the area with relatively large cross-sectional dimensions is slower, and the contact time with the inner wall of the variable diameter channel is relatively longer, and the contact area is also relatively larger. The flow rate of the aerosol in the area with relatively small cross-sectional dimensions is faster, and the contact time with the inner wall of the variable diameter channel is relatively shorter, and the contact area is also relatively smaller. That is to say, in the process of the aerosol flowing along the variable diameter channel, the flow rate of the aerosol will change, and the contact time and contact area of ​​the aerosol with the inner wall at different positions in the variable diameter channel will also change. As a result, the heat of the aerosol can be better transferred through the inner wall of the variable diameter channel, thereby improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic structural diagram of a first aerosol generating product according to an embodiment of the present application;

[0036] Figure 2 for Figure 1 A schematic diagram of the structure of the aerosol generating article shown with the outer wrapping layer omitted;

[0037] Figure 3 for Figure 1 a cross-sectional view of the aerosol-generating article shown;

[0038] Figure 4 for Figure 1 a cross-sectional view of the aerosol-generating article shown from another perspective;

[0039] Figure 5 is a cross-sectional view of a second aerosol generating article according to an embodiment of the present application;

[0040] Figure 6 for Figure 5 The structural schematic diagram of the cooling section shown in ;

[0041] Figure 7 is a cross-sectional view of a third aerosol generating article according to an embodiment of the present application;

[0042] Figure 8 is a cross-sectional view of a fourth aerosol generating article according to an embodiment of the present application;

[0043] Fig. 9 is a cross-sectional view of a fifth aerosol generating article according to an embodiment of the present application;

[0044] Fig.10 is a cross-sectional view of a sixth aerosol generating article according to an embodiment of the present application;

[0045] Fig.11 is a cross-sectional view of a seventh aerosol generating article according to an embodiment of the present application;

[0046] Fig.12 is a cross-sectional view of an eighth aerosol generating article according to an embodiment of the present application;

[0047] Fig.13 is a cross-sectional view of a ninth aerosol generating article according to an embodiment of the present application;

[0048] Fig.14 is a cross-sectional view of a tenth aerosol generating article according to an embodiment of the present application;

[0049] Fig.15 is a cross-sectional view of an eleventh aerosol-generating article according to an embodiment of the present application;

[0050] Fig.16 is a cross-sectional view of a twelfth aerosol generating article according to an embodiment of the present application;

[0051] Fig.17 is a cross-sectional view of a thirteenth aerosol generating article according to an embodiment of the present application;

[0052] Fig.18 is a cross-sectional view of a fourteenth aerosol-generating article according to an embodiment of the present application;

[0053] Fig.19 is a cross-sectional view of a fifteenth aerosol generating article according to an embodiment of the present application;

[0054] Fig. 20 is a cross-sectional view of a sixteenth aerosol generating article according to an embodiment of the present application;

[0055] Fig.21 This is a cross-sectional view of the seventeenth aerosol-generating article of an embodiment of the present application.

[0056] Description of Reference Numerals

[0057] 10. Aerosol generation matrix section; 10a. Airway; 10b. Cavity; 20. Functional section; 21. Cooling section; 21a. Variable diameter channel; 21aa. Airflow inlet; 21ab. Airflow outlet; 21a1. Initial section; 21a2. Final section; 21a3. Middle section; 21a4. Equal diameter section; 21a5. Variable diameter section; 21a6. Wave crest; 21a7. Wave trough; 21b. Airway groove; 22. Filter section; 30. Outer wrapping layer. DETAILED DESCRIPTION

[0058] In the description of the embodiments of the present application, it should be noted that the orientation or position relationship indicated by the term "extension direction" is based on the attached Figure 4 The orientation or positional relationship shown and these orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0059] The present application embodiment provides an aerosol generating product, please refer to Figures 1 to 21 The aerosol generating article comprises an aerosol generating substrate segment 10 and a functional segment 20.

[0060] The functional segment 20 is arranged at one end of the aerosol generating substrate segment 10, and the functional segment 20 at least includes a cooling segment 21 having a variable diameter channel 21a, and the variable diameter channel 21a extends in a direction away from the aerosol generating substrate segment 10, and along the extension direction of the variable diameter channel 21a, the cross-sectional dimensions at at least one position of the variable diameter channel 21a are different from the cross-sectional dimensions at other positions.

[0061] The aerosol generating product is used in conjunction with an aerosol generating device having a heating component. Specifically, the heating component heats and atomizes the aerosol generating substrate segment 10 to generate an aerosol for users to inhale or for use in medicine, beauty, etc.

[0062] There are many heating methods for the heating component. Exemplarily, the heating methods include central heating and circumferential heating. The central heating method refers to the heating component being inserted into the interior of the aerosol generating matrix segment 10 to bake and heat the aerosol generating matrix segment 10 from the inside to the outside. The circumferential heating method refers to the heating component being arranged at the periphery of the aerosol generating matrix segment 10 to bake and heat the aerosol generating matrix segment 10 from the outside to the inside. These heating methods may specifically be resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, and the like.

[0063] The specific structure of the aerosol generating matrix segment 10 is not limited here. For example, in one embodiment, the aerosol generating matrix segment 10 can be made of the atomizing medium itself, for example, made of the smoke flavoring medium. In other embodiments, the aerosol generating matrix segment 10 can also include a matrix and an atomizing medium disposed on the matrix. The matrix can be, for example, high temperature resistant carbon fiber. In this way, by providing the matrix, the strength of the aerosol generating matrix segment 10 can be improved, and it can also withstand a certain degree of high temperature without generating odor.

[0064] The specific components of the aerosol generating substrate segment 10 are not limited herein. For example, in one embodiment, the aerosol generating substrate segment 10 may include plant components, auxiliary components, smoke generating agent components, adhesive components, and the like.

[0065] In one embodiment, the plant component is one or more combinations of powders formed by crushing tobacco raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, and aromatic plants. The plant component is the core source of the flavor of the product. Endogenous substances in the plant component, such as nicotine, enter the human blood through atomization, promote the pituitary gland to produce dopamine, and thus obtain physiological satisfaction.

[0066] In one embodiment, the auxiliary agent component can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Among them, the inorganic filler includes one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic filler can provide a skeleton support for the plant component, and the inorganic filler also has micropores, which can increase the porosity of the wall material after the plant component is formed, thereby increasing the aerosol release rate.

[0067] The lubricant includes one or more combinations of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricant can increase the fluidity of the particles, reduce the friction between the particles, make the overall density of the particle distribution more uniform, and also reduce the pressure required for mold molding and reduce the wear of the mold.

[0068] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers can slow down the loss of flavor substances during storage to a certain extent, increase the stability of flavor substances, and improve the sensory quality of products. Emulsifiers (also known as surfactants) can reduce the interfacial tension of water-soluble and water-insoluble components in the mixed system, and form a relatively strong film on the surface of the droplets or form a double electric layer on the surface of the droplets due to the charge given by the emulsifier, preventing the droplets from aggregating with each other and maintaining a uniform emulsion. Emulsifying and homogenizing two immiscible components can improve the consistency of product quality.

[0069] The function of the smoke-generating agent component is to generate a large amount of steam when heated, thereby increasing the amount of smoke of the smoking product. In one embodiment, the smoke-generating agent may include, for example: a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butylene glycol and glycerol); an ester of a polyhydric alcohol (such as monoacetin, diacetin or triacetin); a monocarboxylic acid; a polycarboxylic acid (such as lauric acid, myristic acid) or an aliphatic ester of a polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butylene glycol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, diacetin mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, glyceryl tributyrate, lauryl acetate) or one or more combinations thereof.

[0070] In one embodiment, the adhesive component is a natural plant extract, a non-ionized modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive is in close contact with the interface of the product component material by wetting, generating an intermolecular attraction, thereby playing the role of bonding the powder, liquid, etc. of the component material. At the same time, the use of natural plant extracts and non-ionic adhesives can avoid the release of harmful substances such as methanol, formaldehyde, and acrolein caused by colloid modification, thereby improving the safety of the product.

[0071] Exemplarily, the aerosol generating matrix segment 10 is an integrated structure, for example, the aerosol generating matrix segment 10 can be a particle combination, and the particle combination is a reconstituted tobacco medium, for example, a reconstituted tobacco medium containing components such as smoke-generating agents and tobacco. The aerosol generating matrix segment 10 can be one of an injection molding structure, a compression molding structure, an extrusion molding structure, a casting molding structure, a compression molding structure, and a 3D printing molding structure. Extrusion molding refers to a processing method in which a raw material mixture is added to an extruder, and the material is pushed forward by the screw through the action between the extruder barrel and the screw, and continuously passes through the die to form various cross-section products or semi-finished products. The aerosol matrix formed by extrusion molding is in the shape of strips.

[0072] Since the aerosol generating matrix segment 10 is a particle combination, it is an integrated medium when the aerosol generating matrix segment 10 is heated and sucked or stops being heated, and is not prone to disintegration and falling off. This solves the problems of thin sheet, filament or loose particle aerosol generating products in the prior art, such as loose sheets, falling of filamentary components and particle components, and difficulty in cleaning.

[0073] In addition, the shape of the aerosol generating substrate segment 10 is not limited. For example, see Figure 2The aerosol generating matrix segment 10 may be columnar, and the cross-section of the columnar aerosol generating matrix segment 10 may be circular or in other shapes, such as polygonal (including but not limited to triangle, square, prism, etc.), elliptical, runway-shaped or irregular, etc., wherein irregular refers to other symmetrical or asymmetrical shapes other than the shapes listed above.

[0074] The cooling section 21 is used to cool the aerosol to reduce the temperature of the aerosol and improve the "burning mouth" phenomenon when the user inhales the aerosol.

[0075] The material of the cooling section 21 is not limited. For example, the material of the cooling section 21 can be ceramic, silica gel, acetate fiber, PET (polyethylene terephthalate), etc.

[0076] The variable diameter channel 21a is a channel for aerosol to pass through. The variable diameter channel 21a has an air flow inlet 21aa at one end close to the aerosol generating matrix segment 10, and has an air flow outlet 21ab at the end of the variable diameter channel 21a away from the aerosol generating matrix segment 10. During the user's inhalation process, the aerosol flows into the variable diameter channel 21a from the air flow inlet 21aa and is cooled in the variable diameter channel 21a. The cooled aerosol flows out from the air flow outlet 21ab.

[0077] See also Figure 1 The variable diameter channel 21a can be arranged inside the cooling section 21, see Fig.21 The variable diameter channel 21a may also be arranged on the outer side wall of the temperature reduction section 21.

[0078] The number of the variable-diameter channels 21a can be one or more. When the number of the variable-diameter channels 21a is more than one, the variable-diameter channels 21a can all be arranged inside the cooling section 21, or all be arranged on the outer wall of the cooling section 21, or partly be arranged inside the cooling section 21, and partly be arranged on the outer wall of the cooling section 21.

[0079] The cross-sectional dimension of the variable diameter channel 21 a refers to the external dimension of the cross section of the variable diameter channel 21 a perpendicular to the extension direction, that is, the external dimension of the cross section of the variable diameter channel 21 a .

[0080] The cross-sectional area of ​​the variable diameter channel 21a can be calculated according to the cross-sectional size of the variable diameter channel 21a. For example, Figure 2 The cross-sectional shape of the variable diameter channel 21 a shown is circular, and therefore, the cross-sectional size of the variable diameter channel 21 a refers to the diameter or radius of the cross section of the variable diameter channel 21 a.

[0081] The cross-sectional shape of the variable diameter channel 21a is not limited. For example, the cross-sectional shape of the variable diameter channel 21a is Figure 2In addition to the circle shown, it can also be a polygon (including but not limited to a triangle, a square, a prism, etc.), an ellipse, a racetrack shape or an irregular shape, etc.

[0082] The cross-sectional dimensions at at least one position of the variable diameter channel 21a are different from the cross-sectional dimensions at other positions, which means that the variable diameter channel 21a is a variable cross-sectional structure with a changing cross-sectional dimension, rather than a uniform cross-sectional structure with the same cross-sectional dimensions at any position. The position where the cross-sectional dimension of the variable diameter channel 21a changes may be any position along the extension direction of the variable diameter channel 21a.

[0083] The cross-sectional dimensions of the variable diameter channel 21a may be larger at at least one position than at other positions, or smaller at at least one position than at other positions, as long as the cross-sectional dimensions of the variable diameter channel 21a vary.

[0084] The functional section 20 may be provided with only the cooling section 21, or may be provided with other sections in addition to the cooling section 21. For example, see Figure 2 and Figure 3 The functional section 20 may also be provided with a filtering section 22, which is provided on the side of the cooling section 21 away from the aerosol generating substrate section 10, so as to filter the aerosol after the cooling treatment.

[0085] The material of the filter section 22 is not limited. For example, the material of the filter section 22 can be acetate fiber, PET, etc.

[0086] It should be noted that the aerosol generating product relies on the aerosol generating substrate segment 10 to generate aerosol, and the functional segment 20 does not generate aerosol.

[0087] For example, see Figure 2 and Figure 3 The aerosol generating article may further be provided with an outer wrapping layer 30 , which wraps around the outer peripheral side of the functional segment 20 and the aerosol generating substrate segment 10 .

[0088] The material of the outer wrapping layer 30 is not limited. For example, the outer wrapping layer 30 includes but is not limited to one or more combinations of fiber paper, metal foil, metal foil composite fiber paper, polyethylene composite fiber paper, PE (polyethylene), PBAT (butylene adipate-co-terephthalate) and other materials.

[0089] Exemplarily, the outer wrapping layer 30 can be a one-layer or two-layer structure. For example, when the outer wrapping layer 30 is a one-layer structure, the aerosol generating matrix segment 10, the cooling segment 21 and the filtering segment 22 can be wrapped at the same time. When the outer wrapping layer 30 is a two-layer structure, the cooling segment 21 and the filtering segment 22 can be first wrapped by one outer wrapping layer 30, and then wrapped by another outer wrapping layer 30. Alternatively, the outer wrapping layer 30 can also be wrapped in other ways.

[0090] Also, see Figure 2 The aerosol generating matrix segment 10 and the functional segment 20 can be coaxially arranged cylinders. The outer diameters of the aerosol generating matrix segment 10 and the functional segment 20 can be the same or different. Preferably, the outer diameters of the aerosol generating matrix segment 10 and the functional segment 20 are the same, and the extending direction of the variable diameter channel 21a is the axial direction of the aerosol generating matrix segment 10 and the functional segment 20.

[0091] In the related art, the cooling structure of the aerosol generating product generally cools the aerosol by setting an air flow channel with equal cross-section. However, when the aerosol with a higher temperature flows through the air flow channel with equal cross-section, the flow rate of the aerosol is basically constant. Therefore, the cooling effect of the aerosol is poor.

[0092] The aerosol generating product of the embodiment of the present application is a cooling section 21 having a variable diameter channel 21a provided in the functional section 20. Along the extension direction of the variable diameter channel 21a, the cross-sectional dimensions at at least one position of the variable diameter channel 21a are different from the cross-sectional dimensions at other positions. That is to say, there will be areas with relatively large cross-sectional dimensions and areas with relatively small cross-sectional dimensions in the variable diameter channel 21a. The flow velocity of the aerosol in the area with relatively large cross-sectional dimensions is slower, and the contact time with the inner side wall of the variable diameter channel 21a is relatively longer, and the contact area is also relatively larger. The flow velocity of the aerosol in the area with relatively small cross-sectional dimensions is faster, and the contact time with the inner side wall of the variable diameter channel 21a is relatively shorter, and the contact area is also relatively smaller. That is to say, in the process of the aerosol flowing along the variable diameter channel 21a, the flow velocity of the aerosol will change, and the contact time and contact area between the aerosol and the inner side wall at different positions in the variable diameter channel 21a will also change. Therefore, the heat of the aerosol can be better transferred through the inner side wall of the variable diameter channel 21a, thereby improving the cooling effect.

[0093] Compared with the cooling method of aerosol generating products in the related art, the aerosol generating products of the embodiments of the present application can further reduce the temperature of the aerosol by at least 3°C ​​to 5°C (including the endpoint values). The lower aerosol temperature is more conducive to improving the user's smoking experience.

[0094] In one embodiment, please refer to Figures 2 to 4 , Figures 8 to 11 At least a part of the variable diameter channel 21a may be a variable diameter region whose cross-sectional size gradually decreases or increases along the extension direction.

[0095] That is to say, the cross-sectional dimension of at least a part of the variable diameter channel 21a gradually decreases along the extension direction, or the cross-sectional dimension of at least a part of the variable diameter channel 21a can also gradually decrease along the extension direction, which is equivalent to that the cross-sectional dimension of the variable diameter channel 21a can be changed by gradually reducing or increasing the cross-sectional dimension.

[0096] The variable diameter area with gradually decreasing or increasing cross-sectional dimensions can extend the length of the inner wall of the variable diameter channel 21a to a certain extent, thereby increasing the contact time and contact area between the aerosol and the inner wall of the variable diameter channel 21a, thereby better enhancing the heat conduction effect between the aerosol and the inner wall of the variable diameter channel 21a.

[0097] See also Figure 3 The inner side wall of the variable diameter channel 21a located in the variable diameter area may be in a curved shape that bends inwardly toward the variable diameter channel 21a. In other words, the inner side wall of the variable diameter channel 21a located in the variable diameter area may have a certain curvature.

[0098] Exemplarily, the curvature of the inner side wall of the variable diameter channel 21a in the variable diameter area can be 0.5rad to 1.58rad (including the endpoint values). For example, the curvature of the inner side wall of the variable diameter channel 21a in the variable diameter area can be 0.5rad, 0.8rad, 1ad, 1.2ad, 1.58rad, etc.

[0099] The inner wall of the variable diameter channel 21a located in the variable diameter area is in a curved shape that bends inwardly into the variable diameter channel 21a, which can further extend the length of the inner wall of the variable diameter channel 21a in the variable diameter area, and further increase the area of ​​the inner wall of the variable diameter channel 21a in the variable diameter area, and the heat conduction effect between the aerosol and the inner wall of the variable diameter channel 21a is also better.

[0100] See also Figure 5 and Figure 6 The aerosol generating product may be provided with a cavity 10b on the outer peripheral side of the cooling section 21, and the cavity 10b is equivalent to the space formed between the cooling section 21 and the outer wrapping layer 30. The cooling section 21 may be provided with an airway groove 21b, which penetrates the side wall of the variable diameter channel 21a located in the variable diameter area, so that the variable diameter area is connected with the cavity 10b.

[0101] The number of the airway groove 21b may be one or more.

[0102] Figure 5 and Figure 6The airway groove 21b in the airway groove 21b surrounds the peripheral side of the variable diameter channel 21a. Specifically, Figure 5 and Figure 6 Only one airway groove 21b is provided, and the airway groove 21b extends spirally along the circumference of the variable diameter channel 21a. In other embodiments, a plurality of airway grooves 21b may be arranged at intervals along the extending direction.

[0103] In other embodiments, the airway groove 21b may also extend along the extension direction.

[0104] The airway groove 21b can not only increase the area of ​​the inner wall of the variable diameter region to enhance the heat conduction effect between the aerosol and the inner wall of the variable diameter channel 21a, but also play a role in adjusting the inhalation resistance.

[0105] In one embodiment, please refer to Figures 3 to 12 The cross-sectional dimension of one of the airflow inlet 21aa and the airflow outlet 21ab may be the maximum cross-sectional dimension of the variable-diameter channel 21a, and the cross-sectional dimension of the other one may be the minimum cross-sectional dimension of the variable-diameter channel 21a.

[0106] That is to say, the cross-sectional dimension of the airflow inlet 21aa may be the maximum cross-sectional dimension of the variable diameter channel 21a, and the cross-sectional dimension of the airflow outlet 21ab may be the minimum cross-sectional dimension of the variable diameter channel 21a, or the cross-sectional dimension of the airflow inlet 21aa may be the minimum cross-sectional dimension of the variable diameter channel 21a, and the cross-sectional dimension of the airflow outlet 21ab may be the maximum cross-sectional dimension of the variable diameter channel 21a. This is equivalent to the cross-sectional dimension of one of the airflow inlet 21aa and the airflow outlet 21ab being the maximum cross-sectional dimension of the entire variable diameter channel 21a, and the cross-sectional dimension of the other of the airflow inlet 21aa and the airflow outlet 21ab being the minimum cross-sectional dimension of the entire variable diameter channel 21a, and the cross-sectional dimension of the variable diameter channel 21a between the airflow inlet 21aa and the airflow outlet 21ab will not be greater than the maximum cross-sectional dimension (may be equal to the maximum cross-sectional dimension), nor will it be less than the minimum cross-sectional dimension (may be equal to the minimum cross-sectional dimension).

[0107] The cross-sectional size of the variable diameter channel 21a may gradually change from the air flow inlet 21aa to the air flow outlet 21ab. For example, see Figures 3 to 5 From the airflow inlet 21aa to the airflow outlet 21ab, the cross-sectional size of the variable-diameter channel 21a may gradually decrease, that is, the closer to the airflow outlet 21ab, the smaller the cross-sectional size of the variable-diameter channel 21a.

[0108] For example, see Fig.10 From the airflow inlet 21aa to the airflow outlet 21ab, the cross-sectional size of the variable-diameter channel 21a may also gradually increase. That is, the closer to the airflow outlet 21ab, the larger the cross-sectional size of the variable-diameter channel 21a.

[0109] The variable diameter channel 21a may also be provided with at least two sections, for example, Figures 7 to 9 , Fig.11 and Fig.12 , along the extension direction of the variable diameter channel 21a, the variable diameter channel 21a may have an initial section 21a1 closest to the aerosol generating substrate segment 10 and a final section 21a2 farthest from the aerosol generating substrate segment 10, the initial section 21a1 has an airflow inlet 21aa, and the final section 21a2 has an airflow outlet 21ab. That is, the initial section 21a1 is the first section of the variable diameter channel 21a along the extension direction, the final section 21a2 is the last section of the variable diameter channel 21a along the extension direction, one of the initial section 21a1 and the final section 21a2 has the largest cross-sectional size, and the other has the smallest cross-sectional size.

[0110] See also Figure 7 and Figure 8 The variable diameter channel 21a may only have an initial section 21a1 and an end section 21a2, see Fig. 9 The variable diameter channel 21a may also have an intermediate section 21a3 between the initial section 21a1 and the final section 21a2. The number and structure of the intermediate sections 21a3 are not limited, as long as the cross-sectional size of the intermediate sections 21a3 is less than or equal to the maximum cross-sectional size and greater than or equal to the minimum cross-sectional size.

[0111] It should be noted that the difference between the cross-sectional dimensions of the variable diameter channel 21a that gradually changes from the air flow inlet 21aa to the air flow outlet 21ab and the variable diameter channel 21a having at least two sections is that the inner side wall of the variable diameter channel 21a whose cross-sectional dimensions gradually change along the extension direction maintains a smooth transition from the air flow inlet 21aa to the air flow outlet 21ab, that is, there is no contour line on the variable diameter channel 21a where the cross-sectional dimensions change significantly, while there is a contour line between two adjacent sections of the variable diameter channel 21a having at least two sections where the cross-sectional dimensions change significantly.

[0112] The variable diameter channel 21a, in which the initial section 21a1 has the largest cross-sectional dimension and the final section 21a2 has the smallest cross-sectional dimension, can have various structural forms. For example, see Figure 7 The initial section 21a1 and the final section 21a2 may be equal diameter structures respectively, the cross-sectional dimension of the initial section 21a1 may be the maximum cross-sectional dimension of the variable diameter channel 21a, and the cross-sectional dimension of the final section 21a2 may be the minimum cross-sectional dimension of the variable diameter channel 21a.

[0113] The equal-diameter structure refers to a structure in which the cross-sectional dimensions are consistent, that is, the cross-sectional dimensions at any position on the initial segment 21a1 are the same, and the cross-sectional dimensions at any position on the final segment 21a2 are also the same.

[0114] Figure 7 The variable diameter channel 21a can make the cross-sectional dimension of the air flow inlet 21aa the maximum cross-sectional dimension of the variable diameter channel 21a, and the cross-sectional dimension of the air flow outlet 21ab the minimum cross-sectional dimension of the variable diameter channel 21a by setting the cross-sectional dimension of the initial section 21a1 to the maximum cross-sectional dimension and setting the cross-sectional dimension of the final section 21a2 to the minimum cross-sectional dimension.

[0115] Furthermore, the cross-sectional area ratio of the cross-sectional size of the initial segment 21a1 to the cross-sectional size of the final segment 21a2 may be 2-5:1-2, for example, 2:1, 3:1, 3:2, 4:1, 5:1, 5:2, etc.

[0116] That is, the contact time and contact area between the aerosol and the inner wall of the variable diameter channel 21a can be changed by setting equal diameter structures with different cross-sectional sizes, so as to enhance the heat conduction effect between the aerosol and the inner wall of the variable diameter channel 21a.

[0117] For example, see Figure 8 and Fig. 9 The initial section 21a1 can be a variable diameter structure whose cross-sectional size gradually decreases along the extension direction. The variable diameter structure is actually the structure of the variable diameter area described in the previous embodiment. The final section 21a2 can be an equal diameter structure. The maximum value of the cross-sectional size of the initial section 21a1 is greater than the cross-sectional size of the final section 21a2. The maximum value of the cross-sectional size of the initial section 21a1 is actually the cross-sectional size of the airflow inlet 21aa, and the cross-sectional size of the final section 21a2 is actually the cross-sectional size of the airflow outlet 21ab. By setting the maximum value of the cross-sectional size of the initial section 21a1 to be greater than the cross-sectional size of the final section 21a2, the cross-sectional size of the airflow inlet 21aa can be made the maximum cross-sectional size of the variable diameter channel 21a, and the cross-sectional size of the airflow outlet 21ab can be made the minimum cross-sectional size of the variable diameter channel 21a.

[0118] The inclination angle of the initial segment 21a1 can be set as needed. For example, the inclination angle of the initial segment 21a1 can be 30° to 60° (including the endpoint values). For example, the inclination angle of the final segment 21a2 can be 30°, 45°, or 60°.

[0119] Fig. 9 The variable diameter channel 21a in the embodiment is further provided with an intermediate section 21a3, which is also a variable diameter structure whose cross-sectional size gradually decreases along the extension direction. The inclination angle of the intermediate section 21a3 is different from that of the initial section 21a1. For example, when the inclination angle of the intermediate section 21a3 is 30°, the inclination angle of the initial section 21a1 may be 60°. In other embodiments, the intermediate section 21a3 may also be a constant diameter structure, or the intermediate section 21a3 may not be provided.

[0120] In some embodiments, the initial section 21a1 may be a constant diameter structure, and the final section 21a2 may be a variable diameter structure whose cross-sectional dimensions gradually decrease along the extension direction, and the cross-sectional dimensions of the initial section 21a1 are greater than the minimum value of the cross-sectional dimensions of the final section 21a2.

[0121] The variable diameter structure can extend the length of the inner wall of the variable diameter channel 21a to a certain extent, thereby increasing the contact time and contact area between the aerosol and the inner wall of the variable diameter channel 21a, thereby better enhancing the heat conduction effect between the aerosol and the inner wall of the variable diameter channel 21a.

[0122] Exemplarily, the initial section 21a1 and the final section 21a2 may both be variable diameter structures, for example, the cross-sectional dimensions of the initial section 21a1 and the cross-sectional dimensions of the final section 21a2 may both gradually decrease along the extension direction, and the maximum value of the cross-sectional dimension of the initial section 21a1 is greater than the minimum value of the cross-sectional dimension of the final section 21a2. The maximum value of the cross-sectional dimension of the initial section 21a1 is actually the cross-sectional dimension of the airflow inlet 21aa, and the minimum value of the cross-sectional dimension of the final section 21a2 is actually the cross-sectional dimension of the airflow outlet 21ab. By setting the maximum value of the cross-sectional dimension of the initial section 21a1 to be greater than the minimum value of the cross-sectional dimension of the final section 21a2, the cross-sectional dimension of the airflow inlet 21aa can be made the maximum cross-sectional dimension of the variable diameter channel 21a, and the cross-sectional dimension of the airflow outlet 21ab can be made the minimum cross-sectional dimension of the variable diameter channel 21a.

[0123] Similarly, the variable diameter channel 21a, in which the initial section 21a1 has the smallest cross-sectional size and the final section 21a2 has the largest cross-sectional size, can also have a variety of structural forms. For example, see Fig.11 The initial section 21a1 and the final section 21a2 may also be equal-diameter structures. The cross-sectional size of the initial section 21a1 may be the minimum cross-sectional size of the variable-diameter channel 21a, and the cross-sectional size of the final section 21a2 may be the maximum cross-sectional size of the variable-diameter channel 21a.

[0124] That is to say, by setting the cross-sectional dimension of the initial section 21a1 to the minimum cross-sectional dimension and the cross-sectional dimension of the final section 21a2 to the maximum cross-sectional dimension, the cross-sectional dimension of the airflow inlet 21aa becomes the minimum cross-sectional dimension of the variable diameter channel 21a, and the cross-sectional dimension of the airflow outlet 21ab becomes the maximum cross-sectional dimension of the variable diameter channel 21a.

[0125] Furthermore, the cross-sectional area ratio of the cross-sectional size of the initial segment 21a1 to the cross-sectional size of the final segment 21a2 may be 1-2:2-5, for example, 1:2, 1:3, 1:4, 1:5, 2:3, 2:5, etc.

[0126] For example, see Fig.12 The initial section 21a1 may be a constant diameter structure, and the final section 21a2 may be a variable diameter structure whose cross-sectional size gradually increases along the extension direction. The cross-sectional size of the initial section 21a1 is smaller than the maximum cross-sectional size of the final section 21a2. The cross-sectional size of the initial section 21a1 is actually the cross-sectional size of the airflow inlet 21aa, and the maximum cross-sectional size of the final section 21a2 is actually the cross-sectional size of the airflow outlet 21ab. By setting the cross-sectional size of the initial section 21a1 to be larger than the maximum cross-sectional size of the final section 21a2, the cross-sectional size of the airflow inlet 21aa can be made the minimum cross-sectional size of the variable diameter channel 21a, and the cross-sectional size of the airflow outlet 21ab can be made the maximum cross-sectional size of the variable diameter channel 21a.

[0127] The inclination angle of the end segment 21a2 can be set as needed. For example, the inclination angle of the end segment 21a2 can be 30° to 60° (including the endpoint values), for example, the inclination angle of the end segment 21a2 can be 30°, 45°, or 60°.

[0128] In some embodiments, the initial section 21a1 may be a variable diameter structure whose cross-sectional dimensions gradually increase along the extension direction, and the final section 21a2 may be a constant diameter structure, and the minimum cross-sectional dimension of the initial section 21a1 may be smaller than the cross-sectional dimension of the final section 21a2.

[0129] Exemplarily, the initial section 21a1 and the final section 21a2 may both be variable diameter structures, and the cross-sectional dimensions of the initial section 21a1 and the cross-sectional dimensions of the final section 21a2 both gradually increase along the extension direction, and the minimum value of the cross-sectional dimension of the initial section 21a1 is smaller than the maximum value of the cross-sectional dimension of the final section 21a2. The minimum value of the cross-sectional dimension of the initial section 21a1 is actually the cross-sectional dimension of the airflow inlet 21aa, and the maximum value of the cross-sectional dimension of the final section 21a2 is actually the cross-sectional dimension of the airflow outlet 21ab. By setting the minimum value of the cross-sectional dimension of the initial section 21a1 to be smaller than the maximum value of the cross-sectional dimension of the final section 21a2, the cross-sectional dimension of the airflow inlet 21aa can be made the minimum cross-sectional dimension of the variable diameter channel 21a, and the cross-sectional dimension of the airflow outlet 21ab can be made the maximum cross-sectional dimension of the variable diameter channel 21a.

[0130] When the cross-sectional dimension of the airflow inlet 21aa is the maximum cross-sectional dimension of the variable-diameter channel 21a, and the cross-sectional dimension of the airflow outlet 21ab is the minimum cross-sectional dimension of the variable-diameter channel 21a, the aerosol flows from the end of the variable-diameter channel 21a with a relatively larger cross-sectional dimension to the end of the variable-diameter channel 21a with a relatively smaller cross-sectional dimension, and the flow rate of the aerosol gradually increases from small to large, and the contact area with the inner wall of the variable-diameter channel 21a also changes from large to small. Similarly, when the cross-sectional dimension of the airflow inlet 21aa is the minimum cross-sectional dimension of the variable-diameter channel 21a, and the cross-sectional dimension of the airflow outlet 21ab is the maximum cross-sectional dimension of the variable-diameter channel 21a, the aerosol Flowing from the end of the variable diameter channel 21a with a relatively smaller cross-sectional size to the end of the variable diameter channel 21a with a relatively larger cross-sectional size, the flow rate of the aerosol gradually decreases, and the contact area with the inner wall of the variable diameter channel 21a also changes from small to large. Both methods can better increase the contact time between the aerosol and the inner wall of the variable diameter channel 21a, and increase the contact area between the aerosol and the inner wall of the variable diameter channel 21a. Compared with the cooling method of the aerosol generating product in the related art, the temperature of the aerosol can be further reduced by at least 4°C to 6°C (including the endpoint values), thereby providing users with a better inhalation experience.

[0131] In one embodiment, please refer to Figures 13 to 21 The size of the cross-sectional dimensions of the variable diameter channel 21a may also change alternately along the extension direction. That is to say, along the extension direction, the cross-sectional dimensions of the variable diameter channel 21a may change alternately between increasing and decreasing. For example, the cross-sectional dimensions of the variable diameter channel 21a may increase first and then decrease, or may decrease first and then increase, as long as they can change alternately.

[0132] For example, see Fig.13 The cross-sectional size of the variable diameter channel 21a can gradually decrease and then gradually increase along the extension direction.

[0133] See also Fig.13 The inner side wall of the variable diameter channel 21a may also be in a curved shape that bends toward the variable diameter channel 21a.

[0134] The cross-sectional size of the variable diameter channel 21a gradually decreases and then gradually increases along the extension direction, so that the aerosol can contact the inner wall of the variable diameter channel 21a for a longer time and with a larger contact area, which can better enhance the heat conduction effect between the aerosol and the inner wall of the variable diameter channel 21a.

[0135] In other embodiments, the cross-sectional size of the variable-diameter channel 21 a may also gradually decrease and then gradually increase along the extending direction.

[0136] For example, see Fig.14 and Fig.15 Along the extension direction, the variable diameter channel 21a has at least three equal diameter sections 21a4, and the equal diameter sections 21a4 are arranged alternately according to the size of the cross-sectional dimensions.

[0137] The equal-diameter section 21a4 is equivalent to the equal-diameter structure described in the previous embodiment, that is, the cross-sectional dimensions of the same equal-diameter section 21a4 remain consistent.

[0138] The variable diameter channel 21a may have three equal diameter sections 21a4, or may have more than three equal diameter sections 21a4, for example, Fig.14 The variable diameter channel 21a shown has three equal diameter sections 21a4. Fig.15 The reduced diameter channel 21a shown has five equal diameter sections 21a4.

[0139] The cross-sectional dimensions of the equal diameter section 21a4 can be as follows: Fig.14 The shown arrangement is in the order of small-big-small, or it can be arranged in the order of big-small-big.

[0140] It should be noted that when the number of equal-diameter segments 21a4 with relatively small cross-sectional dimensions is at least two, the cross-sectional dimensions of each equal-diameter segment 21a4 with relatively small cross-sectional dimensions may be the same or different. Similarly, when the number of equal-diameter segments 21a4 with relatively large cross-sectional dimensions is at least two, the cross-sectional dimensions of each equal-diameter segment 21a4 with relatively large cross-sectional dimensions may be the same or different.

[0141] For further information, see Fig.16 and Fig.17 The variable diameter channel 21a may also be provided with a variable diameter section 21a5 between two adjacent equal diameter sections 21a4, and the cross-sectional dimension of the variable diameter section 21a5 transitions from one of the two adjacent equal diameter sections 21a4 to the other. That is to say, among the two adjacent equal diameter sections 21a4, if the cross-sectional dimension of the equal diameter section 21a4 located upstream in the extension direction is larger than the cross-sectional dimension of the equal diameter section 21a4 located downstream in the extension direction, the cross-sectional dimension of the variable diameter section 21a5 gradually decreases along the extension direction, for example, Fig.16 Of the two reduced diameter sections 21a5, the cross-sectional size of the reduced diameter section 21a5 close to the aerosol generating substrate section 10 gradually decreases along the extension direction. Fig.17 In the two reduced diameter sections 21a5 shown, the cross-sectional dimension of the reduced diameter section 21a5 facing away from the aerosol generating substrate section 10 gradually decreases along the extension direction. Similarly, in two adjacent equal diameter sections 21a4, if the cross-sectional dimension of the equal diameter section 21a4 located upstream in the extension direction is smaller than the cross-sectional dimension of the equal diameter section 21a4 located downstream in the extension direction, the cross-sectional dimension of the reduced diameter section 21a5 gradually increases along the extension direction, for example, Fig.16 Of the two reduced diameter sections 21a5 shown, the cross-sectional size of the reduced diameter section 21a5 facing away from the aerosol generating substrate section 10 gradually increases along the extension direction. Fig.17Of the two reduced diameter sections 21a5 shown, the cross-sectional size of the reduced diameter section 21a5 close to the aerosol generating substrate section 10 gradually increases along the extension direction.

[0142] For example, see Fig.18 and Fig.19 Along the extension direction, the variable diameter channel 21a may also have at least two variable diameter sections 21a5 and a constant diameter section 21a4 located between two adjacent variable diameter sections 21a5, that is, the number of the variable diameter sections 21a5 may be two or more than two, and a constant diameter section 21a4 is respectively arranged between each two adjacent variable diameter sections 21a5. Among the two adjacent variable diameter sections 21a5, the cross-sectional size of one of the variable diameter sections 21a5 gradually decreases along the extension direction, and the cross-sectional size of the other variable diameter section 21a5 gradually increases along the extension direction.

[0143] Fig.18 The variable diameter channel 21a in the apparatus is provided with two variable diameter sections 21a5, and a constant diameter section 21a4 is provided between the two variable diameter sections 21a5, wherein the cross-sectional dimension of the variable diameter section 21a5 located between the aerosol generating matrix section 10 and the constant diameter section 21a4 gradually decreases along the extension direction, and the cross-sectional dimension of the variable diameter section 21a5 located at the end of the constant diameter section 21a4 away from the aerosol generating matrix section 10 gradually increases along the extension direction. In other implementations, the cross-sectional dimension of the variable diameter section 21a5 located between the aerosol generating matrix section 10 and the constant diameter section 21a4 gradually increases along the extension direction, and the cross-sectional dimension of the variable diameter section 21a5 located at the end of the constant diameter section 21a4 away from the aerosol generating matrix section 10 gradually decreases along the extension direction.

[0144] Fig.19 The variable diameter channel 21a is provided with four variable diameter sections 21a5. Among the four variable diameter sections 21a5, the cross-sectional size of the first variable diameter section 21a5 gradually decreases along the extension direction, the cross-sectional size of the second variable diameter section 21a5 gradually increases along the extension direction, the cross-sectional size of the third variable diameter section 21a5 gradually decreases along the extension direction, and the cross-sectional size of the fourth variable diameter section 21a5 gradually increases along the extension direction. That is to say, the four variable diameter sections 21a5 are alternately arranged in the order of gradually decreasing cross-sectional size along the extension direction and gradually increasing cross-sectional size along the extension direction. In other implementations, the four variable diameter sections 21a5 can also be alternately arranged in the order of gradually increasing cross-sectional size along the extension direction and gradually decreasing cross-sectional size along the extension direction.

[0145] In addition, the cross-sectional dimensions of the constant diameter section 21a4 may be consistent with the cross-sectional dimensions of the variable diameter sections 21a5 located at the opposite ends thereof, for example, Fig.18 The minimum values ​​of the cross-sectional dimensions of the two diameter-reducing sections 21a5 are equal to the cross-sectional dimension of the constant diameter section 21a4. Fig.19The minimum values ​​of the cross-sectional dimensions of the first reducing section 21a5 and the second reducing section 21a5 are both equal to the cross-sectional dimension of the equal diameter section 21a4 located between the first reducing section 21a5 and the second reducing section 21a5, and the maximum values ​​of the cross-sectional dimensions of the second reducing section 21a5 and the third reducing section 21a5 are both equal to the cross-sectional dimension of the equal diameter section 21a4 located between the second reducing section 21a5 and the third reducing section 21a5. In other embodiments, the cross-sectional dimension of the equal diameter section 21a4 may also be different from the cross-sectional dimension of the reducing sections 21a5 located at its opposite ends.

[0146] For example, see Fig. 20 and Fig.21 Along the extension direction, at least part of the inner wall of the variable diameter channel 21a may also be sinusoidal, that is, the entire inner wall of the variable diameter channel 21a may be sinusoidal in the extension direction, or only part of the inner wall may be sinusoidal in the extension direction.

[0147] for example, Fig. 20 The entire inner side wall of the variable diameter channel 21a shown in the figure is sinusoidal in the extension direction. Fig.21 In the illustrated variable diameter channel 21a, only a portion of the inner side wall is sinusoidal in the extension direction.

[0148] See also Fig. 20 and Fig.21 The inner side wall having a sinusoidal waveform has crests 21a6 and troughs 21a7, and the total number of the crests 21a6 and the troughs 21a7 is at least 2. Preferably, the total number of the crests 21a6 and the troughs 21a7 may be 5 to 15 (including the endpoint values), for example, the total number of the crests 21a6 and the troughs 21a7 may be 5, 8, 10, 12, or 15. More preferably, the total number of the crests 21a6 and the troughs 21a7 may be 10.

[0149] The cross-sectional dimensions of the variable diameter channel 21a change alternately along the extension direction, which can further extend the path of the variable diameter channel 21a and increase the area of ​​the inner wall of the variable diameter channel 21a. When the aerosol passes through the variable diameter channel 21a, the overall flow rate is relatively slow, and the contact area with the inner wall of the variable diameter channel 21a is larger, so the cooling effect is better.

[0150] Compared with the cooling method of aerosol generating products in the related art, the variable diameter channel 21a whose cross-sectional size changes alternately along the extension direction can at least reduce the temperature of the aerosol by at least 5°C to 7°C (including the endpoint values), among which the variable diameter channel 21a with a sinusoidal waveform can further reduce the temperature of the aerosol by at least 5°C to 8°C (including the endpoint values).

[0151] In one embodiment, please refer to Figure 3and Figure 4 The interior of the aerosol generating substrate segment 10 may further include at least one air channel 10a, and the air channel 10a runs through at least one of the two opposite ends of the aerosol generating substrate segment 10 along the airflow direction.

[0152] 3 and Figure 4 The air channel 10a passes through the opposite ends of the aerosol generating substrate segment 10 along the airflow direction. In some embodiments, the air channel 10a may only pass through one end of the aerosol generating substrate segment 10 close to the functional segment 20, while the other end is a closed end. Alternatively, the air channel 10a may only pass through one end of the aerosol generating substrate segment 10 away from the functional segment 20, while the other end is a closed end.

[0153] Compared with the air passage 10a penetrating one end of the aerosol generating substrate segment 10 along the airflow direction, the air passage 10a penetrating both ends of the aerosol generating substrate segment 10 along the airflow direction is more conducive to reducing the user's inhalation resistance.

[0154] The number of the air passage 10a may be one or more.

[0155] The airway 10a may be as follows Figure 3 and Figure 4 The straight airway shown is an airway extending along a straight line, or in other words, the extending direction of the straight airway is a straight line.

[0156] The airway 10a may also be a spiral airway, which is an airway in which at least part of the area along the extension direction is a curved airway with a curvature not equal to zero. For example, along the extension direction of the spiral airway, the spiral airway may have a structure in which there are both a curved segment with a curvature not equal to zero and a straight segment with a curvature of zero, or may have only a curved segment with a curvature not equal to zero and no straight segment with a curvature of zero. In other words, from the starting point to the end point of the spiral airway along the extension direction, the spiral airway does not need to extend along a straight line.

[0157] When there are multiple air passages 10 a , some of the air passages 10 a may be straight air passages, and other air passages 10 a may be spiral air passages.

[0158] The shape of the cross section of the airway 10a is not limited. For example, the cross section may be circular, polygonal (including but not limited to triangle, square, prism, etc.), elliptical, racetrack-shaped or irregular-shaped.

[0159] by Figure 3Taking the aerosol generating product shown as an example, when the aerosol generating matrix segment 10 is heated, the aerosol generating matrix segment 10 releases aerosol. Since at least some of the micropores or gaps in the wall material of the aerosol generating matrix segment 10 are connected to the airway 10a, the aerosol released by the aerosol generating matrix segment 10 when heated can enter the airway 10a through the micropores or gaps connected to the airway 10a. At the same time, external airflow such as air can enter the airway 10a of the aerosol generating matrix segment 10 from the end of the aerosol generating matrix segment 10 away from the functional segment 20. In this way, during the inhalation process, the airflow gathered in the airway 10a can carry the aerosol to the functional segment 20, and is cooled when passing through the reducing channel 21a of the cooling segment 21, and then enters the user's mouth after being filtered by the filtering segment 22.

[0160] The airway 10a can extend the airflow path and increase the flow speed of the airflow in the aerosol generating matrix segment 10, thereby increasing the impact force of the airflow and allowing the aerosol to be evenly mixed, thereby improving the extraction efficiency and uniformity of the aerosol in the aerosol generating matrix segment 10 and enhancing the user's inhalation experience.

[0161] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0162] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. An aerosol generating product, characterized in that include: Aerosol generating matrix segment; A functional segment is arranged at one end of the aerosol generating substrate segment, and the functional segment at least includes a cooling segment having a variable diameter channel, and the variable diameter channel extends in a direction away from the aerosol generating substrate segment, and along the extension direction of the variable diameter channel, the cross-sectional dimensions at at least one position of the variable diameter channel are different from the cross-sectional dimensions at other positions.

2. The aerosol-generating article according to claim 1, wherein The variable diameter channel is arranged inside the temperature reduction section; or, The variable diameter channel is arranged on the outer side wall of the temperature reduction section.

3. The aerosol generating article according to claim 1 or 2, characterized in that At least a part of the variable diameter channel is a variable diameter region whose cross-sectional size gradually decreases or gradually increases along the extension direction.

4. The aerosol-generating article according to claim 3, wherein: The inner side wall of the diameter-changing channel located in the diameter-changing area is in a curved shape bending inwardly of the diameter-changing channel.

5. The aerosol-generating article according to claim 3, wherein: The aerosol generating product has a cavity located on the outer peripheral side of the cooling section, and the cooling section has an airway groove, which penetrates the side wall of the variable diameter channel located in the variable diameter area to connect the variable diameter area with the cavity.

6. An aerosol generating article according to claim 5, characterized in that The airway groove surrounds the circumference of the variable diameter channel.

7. The aerosol generating article according to claim 1 or 2, characterized in that The variable diameter channel has an air flow inlet at one end close to the aerosol generating substrate segment, and has an air flow outlet at one end away from the aerosol generating substrate segment. The cross-sectional dimension of one of the air flow inlet and the air flow outlet is the maximum cross-sectional dimension of the variable diameter channel, and the cross-sectional dimension of the other is the minimum cross-sectional dimension of the variable diameter channel.

8. An aerosol-generating article according to claim 7, characterized in that From the airflow inlet to the airflow outlet, the cross-sectional size of the variable-diameter channel gradually decreases or increases.

9. An aerosol generating article according to claim 8, characterized in that Along the extension direction, the variable diameter channel has an initial section closest to the aerosol generating substrate section and a final section farthest from the aerosol generating substrate section, the initial section has the airflow inlet, and the final section has the airflow outlet.

10. An aerosol-generating article according to claim 9, characterized in that The initial section and the final section are both equal-diameter structures, the cross-sectional dimension of one of the initial section and the final section is the maximum cross-sectional dimension, and the cross-sectional dimension of the other one is the minimum cross-sectional dimension.

11. An aerosol-generating article according to claim 10, characterized in that The cross-sectional area ratio of the maximum cross-sectional dimension to the minimum cross-sectional dimension is 2-5:1-2.

12. The aerosol-generating article of claim 7, wherein: Along the extension direction, the variable diameter channel has an initial section closest to the aerosol generating substrate section and a terminal section farthest from the aerosol generating substrate section; The initial section is a variable diameter structure whose cross-sectional dimension gradually decreases along the extension direction, the final section is a constant diameter structure, and the maximum cross-sectional dimension of the initial section is greater than the cross-sectional dimension of the final section; or, The initial section is a constant diameter structure, and the final section is a variable diameter structure whose cross-sectional size gradually increases along the extension direction. The cross-sectional size of the initial section is smaller than the maximum value of the cross-sectional size of the final section.

13. The aerosol-generating article of claim 7, wherein: Along the extension direction, the variable diameter channel has an initial section closest to the aerosol generating substrate section and a final section farthest from the aerosol generating substrate section, and both the initial section and the final section are variable diameter structures; The cross-sectional dimensions of the initial segment and the cross-sectional dimensions of the final segment both gradually decrease along the extension direction, and the maximum value of the cross-sectional dimension of the initial segment is greater than the minimum value of the cross-sectional dimension of the final segment; or, The cross-sectional dimensions of the initial segment and the cross-sectional dimensions of the final segment both gradually increase along the extending direction, and the minimum value of the cross-sectional dimension of the initial segment is smaller than the maximum value of the cross-sectional dimension of the final segment.

14. The aerosol-generating article of claim 7, wherein: Along the extension direction, the variable diameter channel has an initial section closest to the aerosol generating substrate section, a final section farthest from the aerosol generating substrate section, and an intermediate section located between the initial section and the final section, and the cross-sectional size of the intermediate section is less than or equal to the maximum cross-sectional size and greater than or equal to the minimum cross-sectional size.

15. An aerosol-generating article according to claim 1 or 2, characterized in that The cross-sectional dimensions of the variable-diameter channel change alternately along the extending direction.

16. An aerosol-generating article according to claim 15, characterized in that The cross-sectional size of the variable diameter channel gradually decreases and then gradually increases along the extension direction; or, The cross-sectional size of the variable diameter channel gradually increases and then gradually decreases along the extending direction.

17. The aerosol-generating article of claim 15, wherein: Along the extending direction, the variable diameter channel has at least three equal diameter sections, and the equal diameter sections are arranged alternately according to the size of the cross-sectional dimensions; The variable diameter channel further comprises a variable diameter section located between two adjacent equal diameter sections, and a cross-sectional dimension of the variable diameter section transitions from one of the two adjacent equal diameter sections to the other.

18. The aerosol-generating article of claim 15, wherein: Along the extension direction, the variable diameter channel has at least two variable diameter sections and a constant diameter section located between two adjacent variable diameter sections. Among the two adjacent variable diameter sections, the cross-sectional size of one of the variable diameter sections gradually decreases along the extension direction, and the cross-sectional size of the other variable diameter section gradually increases along the extension direction.

19. The aerosol-generating article of claim 15, wherein: Along the extending direction, at least a portion of the inner side wall of the variable diameter channel is in a sinusoidal waveform; the inner side wall in the sinusoidal waveform has crests and troughs, and the total number of the crests and the troughs is 5 to 15.

20. An aerosol-generating article according to claim 1 or 2, characterized in that The aerosol generating substrate segment is an integral structure having at least one air channel therein, and the air channel runs through at least one of the two opposite ends of the aerosol generating substrate segment along the flow direction of the airflow.

21. An aerosol-generating article according to claim 1 or 2, characterized in that The aerosol generating matrix segment and the functional segment are coaxially arranged cylinders, and the extending direction is the axial direction of the aerosol generating matrix segment and the functional segment.

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