Aerosol generating substrate and microwave heating method

Abstract

An aerosol generating substrate (100) and a microwave heating method. The aerosol generating substrate (100) has at least one aerosol release channel (10), and the thickness of a wall body (20) of the aerosol release channel (10) constructed by the aerosol generating substrate (100) is 0.1-1.2 mm. This aerosol generating substrate (100) can improve the efficiency of aerosol extraction.

Description

Aerosol generating matrix and microwave heating method

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202310787002.9 and application date June 29, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the technical field of smoking products, and in particular to an aerosol generating matrix and a microwave heating method. Background Art

[0004] The aerosol generating matrix generally generates aerosol by heating without burning. Specifically, the aerosol generating matrix is ​​heated by an external heat source so that it is heated just enough to emit fragrance. The aerosol generating matrix does not burn, but instead loads an atomizer and releases the atomizer by heating when in use to form smoke.

[0005] In related technologies, methods for heating the aerosol-generating matrix include resistance heating, electromagnetic heating, microwave heating, etc. Before inhalation, the aerosol-generating matrix needs to be preheated. After preheating, the user can continue to inhale the aerosol-generating matrix for a predetermined number of puffs to achieve the purpose of inhaling the aerosol.

[0006] However, in the related art, the density of the physical structure of the aerosol generating matrix is ​​relatively high. During the heating process, it is difficult for the aerosol to circulate within the physical structure of the aerosol generating matrix in a short period of time, or it is difficult to be released from the physical structure of the aerosol generating matrix to the outside world. As a result, the extraction efficiency of the aerosol generating matrix is ​​greatly reduced, and it cannot meet the requirements of immediate extraction.

[0007] Summary of the Invention

[0008] In view of this, the embodiments of the present application hope to provide an aerosol generating matrix and a microwave heating method that can improve the aerosol extraction efficiency.

[0009] To achieve the above-mentioned purpose, an embodiment of the present application provides an aerosol-generating substrate, wherein the aerosol-generating substrate has at least one aerosol release channel, and the thickness of the wall of the aerosol-generating substrate constituting the aerosol release channel is 0.1 mm to 1.2 mm.

[0010] In one embodiment, the wall has a thickness of 0.3 mm to 0.5 mm.

[0011] In one embodiment, the thickness difference of the wall at different positions of the aerosol generating substrate is 0 to 100%.

[0012] In one embodiment, the aerosol-generating substrate is an extruded structure.

[0013] In one embodiment, the cross-sectional area of ​​each aerosol release channel is S1, the cross-sectional area of ​​the wall constituting the corresponding aerosol release channel is S2, and S1:S2=1:1-5:1.

[0014] In one embodiment, the wall body includes a first wall body, which constructs the outer contour of the aerosol generating matrix; part of the inner surface of the first wall body is recessed toward the outer side of the aerosol generating matrix, so that a plurality of first grooves arranged at intervals are formed on the inner peripheral side of the first wall body.

[0015] In one embodiment, the wall body includes a first wall body, which constructs the outer contour of the aerosol generating matrix; part of the outer surface of the first wall body is recessed toward the inner side of the aerosol generating matrix, so that a plurality of second grooves arranged at intervals are formed on the outer peripheral side of the first wall body.

[0016] In one embodiment, the aerosol generating substrate has a plurality of the first grooves and a plurality of the second grooves, and the first grooves and the second grooves are arranged opposite to each other along the thickness direction of the wall.

[0017] In one embodiment, the wall body includes a first wall body and a second wall body, wherein the first wall body constructs the outer contour of the aerosol generating substrate and a hollow area located inside the aerosol generating substrate, and the second wall body is arranged in the hollow area to separate the hollow area into at least two aerosol release channels.

[0018] In one embodiment, there are multiple second walls, one side of each second wall is connected to the first wall, and the other opposite sides of each second wall are connected to each other.

[0019] In one embodiment, the aerosol release channel includes at least one first aerosol release channel and a plurality of second aerosol release channels, and the plurality of second aerosol release channels surround the first aerosol release channel.

[0020] In one embodiment, the wall body includes a first wall body, multiple second wall bodies, and a ring-shaped third wall body, the first wall body constructs the outer contour of the aerosol generating matrix and the hollow area located inside the aerosol generating matrix; multiple second wall bodies and the third wall body are all arranged in the hollow area, one side of each second wall body is respectively connected to the first wall body, and the other side opposite to each second wall body is respectively connected to the third wall body; the first aerosol release channel is constructed in the third wall body, and the first wall body, the third wall body and the two adjacent second wall bodies jointly construct the second aerosol release channel.

[0021] In one embodiment, the wall is provided with air holes.

[0022] In one embodiment, the wall comprises a wave-absorbing material.

[0023] In one embodiment, the wall is used to absorb microwaves and generate heat to generate aerosol.

[0024] In one embodiment, one end of the aerosol release channel is an open end that passes through the aerosol generating substrate, and the other opposite end of the aerosol release channel is a closed end.

[0025] In one embodiment, both opposite ends of the aerosol release channel are open ends that penetrate the aerosol generating substrate.

[0026] Another embodiment of the present application provides a microwave heating method for the above-mentioned aerosol-generating substrate, the method comprising:

[0027] The aerosol generating substrate is heated by microwaves so that the aerosol generated by the aerosol generating substrate is released into the aerosol releasing channel.

[0028] In one embodiment, the number of the aerosol release channels is multiple, and the method includes:

[0029] The walls of some of the aerosol release channels among the plurality of aerosol release channels are heated each time.

[0030] In one embodiment, the aerosol release channel includes at least one first aerosol release channel and a plurality of second aerosol release channels, wherein the plurality of second aerosol release channels surround the first aerosol release channel, and the method includes:

[0031] The walls of some of the second aerosol release channels among the plurality of second aerosol release channels are heated each time.

[0032] The embodiments of the present application provide an aerosol-generating matrix and a microwave heating method. The aerosol-generating matrix has at least one aerosol release channel, and the thickness of the wall of the aerosol-generating matrix forming the aerosol release channel is 0.1 mm to 1.2 mm. Setting the wall thickness within the range of 0.1 mm to 1.2 mm facilitates rapid aerosol release during heating, improves aerosol extraction efficiency, and ensures the carbonization rate of the aerosol-generating matrix, thereby increasing utilization. Furthermore, this thickness range also ensures that the aerosol-generating matrix has sufficient structural strength and is less susceptible to deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a schematic structural diagram of a first aerosol generating substrate according to an embodiment of the present application;

[0034] FIG2 is a schematic cross-sectional view of the aerosol generating substrate shown in FIG1 ;

[0035] FIG3 is a schematic structural diagram of a second aerosol generating substrate according to an embodiment of the present application;

[0036] FIG4 is a schematic cross-sectional view of the aerosol generating substrate shown in FIG3 ;

[0037] FIG5 is a schematic structural diagram of a third aerosol generating substrate according to an embodiment of the present application;

[0038] FIG6 is a schematic cross-sectional view of the aerosol generating substrate shown in FIG5 ;

[0039] FIG7 is a schematic structural diagram of a fourth aerosol generating substrate according to an embodiment of the present application;

[0040] FIG8 is a schematic cross-sectional view of the aerosol generating substrate shown in FIG7 ;

[0041] FIG9 is a schematic cross-sectional view of a fifth aerosol-generating substrate according to an embodiment of the present application;

[0042] FIG10 is a schematic diagram of a microwave heating method according to an embodiment of the present application. DETAILED DESCRIPTION

[0043] An embodiment of the present application provides an aerosol-generating substrate 100, please refer to Figures 1 to 9. The aerosol-generating substrate 100 has at least one aerosol release channel 10, and the thickness of the wall 20 of the aerosol release channel 10 constructed by the aerosol-generating substrate 100 (the letter D in Figures 2, 4, 6 and 8 represents the thickness of each wall 20) is 0.1 mm to 1.2 mm (including the endpoint values).

[0044] The aerosol generating substrate 100 is used in conjunction with an aerosol generating device having a heating component. Specifically, the heating component heats and atomizes the aerosol generating substrate 100 to generate an aerosol for inhalation by a user or for use in medicine, beauty, etc.

[0045] There are various heating methods for the heating assembly. Exemplary heating methods include central heating and peripheral heating. Central heating involves inserting the heating assembly into the aerosol-generating substrate 100 to heat the aerosol-generating substrate 100 from the inside out. Peripheral heating involves placing the heating assembly around the periphery of the aerosol-generating substrate 100 to heat the aerosol-generating substrate 100 from the outside in. These heating methods may include resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, and the like.

[0046] Illustratively, the aerosol-generating substrate 100 is used for microwave heating, and the wall of the aerosol-generating substrate 100 can be used to absorb microwaves and generate heat to generate aerosol.

[0047] The specific structure of the aerosol-generating substrate 100 is not limited herein. For example, in one embodiment, the aerosol-generating substrate 100 can be made of the atomizing medium itself, such as a smoke-flavoring flavoring medium. In other embodiments, the aerosol-generating substrate 100 can also include a substrate and an atomizing medium disposed on the substrate. The substrate can be, for example, high-temperature-resistant carbon fiber. The presence of the substrate can both increase the strength of the aerosol-generating substrate 100 and allow it to withstand a certain degree of high temperature without generating odor.

[0048] The specific components of the aerosol generating matrix 100 are not limited herein. For example, in one embodiment, the aerosol generating matrix 100 may include plant components, auxiliary components, smoke generating components, adhesive components, etc.

[0049] In one embodiment, the plant component is one or more combinations of powders formed from crushed tobacco leaves, tobacco leaf fragments, tobacco stems, tobacco dust, and flavorful 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 bloodstream through aerosolization, promoting dopamine production in the pituitary gland, thereby achieving a sense of physiological satisfaction.

[0050] In one embodiment, the auxiliary agent may be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. Inorganic fillers can provide skeletal support for the plant component and, while also possessing micropores, can increase the porosity of the wall material after the plant component is formed, thereby improving the aerosol release rate.

[0051] Lubricants include one or more of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. Lubricants can increase particle flowability, reduce friction between particles, and achieve a more uniform particle density. They can also reduce mold pressure and reduce mold wear.

[0052] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers can, to a certain extent, slow the loss of flavoring substances during storage, increase their stability, and improve the sensory quality of the product. Emulsifiers (also known as surfactants) can reduce the interfacial tension between the water-soluble and water-insoluble components in a mixed system and form a relatively strong film on the surface of the droplets. Alternatively, due to the charge imparted by the emulsifier, a double layer is formed on the surface of the droplets, preventing the droplets from aggregating and maintaining a uniform emulsion. Emulsifying and homogenizing two immiscible components can improve the consistency of product quality.

[0053] The function of the smoke-generating agent component is to generate a large amount of vapor when heated, thereby increasing the amount of smoke produced by the smoking article. 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 glyceryl monoacetate, glyceryl diacetate, or glyceryl triacetate); 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, a mixture of diacetyl glycerides, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, tributyrin, and lauryl acetate).

[0054] In one embodiment, the adhesive component is a natural plant-extracted, non-ionically modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive wetting and intimately contacting the product component materials creates intermolecular attraction, thereby bonding the powders and liquids of the component materials. The use of a natural plant-extracted, non-ionic adhesive can prevent the release of harmful substances such as methanol, formaldehyde, and acrolein caused by colloid modification, thereby improving the safety of the product.

[0055] In one embodiment, the wall may further include a wave-absorbing material. The wave-absorbing material is a material with a high absorption rate for microwaves and may be better suited for microwave heating.

[0056] Illustratively, the aerosol-generating matrix 100 can be a particle combination, which is a reconstituted tobacco medium, such as a reconstituted tobacco medium containing components such as a smoke-generating agent and tobacco. The aerosol-generating matrix 100 is a one-piece structure, such as a one-piece structure that can be formed by injection molding, compression molding, or extrusion. 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-sectional products or semi-finished products. The aerosol matrix formed by extrusion molding is in the form of strips.

[0057] Since the aerosol generating matrix 100 is a particle combination, it is an integrated medium when the aerosol generating matrix 100 is heated and inhaled or stops being heated, and is not prone to disintegration and falling off. This solves the problems in the prior art of the thin sheet, filamentous or loose particle aerosol generating matrix 100, such as loose sheets, falling off of filamentous components and particle components, and difficulty in cleaning.

[0058] The shape of the aerosol-generating substrate 100 is also not limited, as long as it can provide an aerosol release channel. For example, referring to FIG1 , the aerosol-generating substrate 100 can be cylindrical. The cross-sectional shape of the cylindrical aerosol-generating substrate 100 can be circular, polygonal (including but not limited to triangle, square, prism, etc.), elliptical, racetrack-shaped, or irregularly shaped, where irregularly shaped refers to other symmetrical or asymmetrical shapes other than those listed above.

[0059] The aerosol release channel 10 is a channel for extracting aerosol during the heating process. That is, the aerosol generated by the aerosol generating substrate 100 when heated enters the aerosol release channel 10 and is discharged from the aerosol release channel 10 .

[0060] The number of the aerosol release channel 10 can be one or more.

[0061] One end of the aerosol release channel 10 may be an open end penetrating the aerosol generating substrate 100 , and the other opposite end of the aerosol release channel 10 is a closed end. That is, the aerosol release channel 10 only penetrating one end of the aerosol generating substrate 100 .

[0062] The opposite ends of the aerosol release channel 10 may also be open ends that penetrate the aerosol-generating substrate 100 . That is, the aerosol release channel 10 may penetrate both ends of the aerosol-generating substrate 100 .

[0063] For an aerosol-generating substrate 100 having a plurality of aerosol release channels 10 , illustratively referring to FIG. 5 and FIG. 6 , the aerosol release channels 10 may be spaced apart along the circumference of the aerosol-generating substrate 100 .

[0064] For example, referring to Figures 7 to 9 , at least one aerosol release channel 10 may be provided in the middle region of the aerosol-generating substrate 100, with other aerosol release channels 10 surrounding the aerosol release channel 10 located in the middle region. For example, for ease of description, the aerosol release channels 10 in Figures 7 to 9 may be referred to as the first aerosol release channel 10a and the second aerosol release channel 10b, respectively. Figures 7 to 9 only provide one first aerosol release channel 10a and multiple second aerosol release channels 10b, with the multiple second aerosol release channels 10b surrounding the first aerosol release channel 10a. In other embodiments, multiple first aerosol release channels 10a may be provided, and multiple second aerosol release channels 10b may surround the first aerosol release channel 10a.

[0065] The wall 20 that constructs the aerosol release channel 10 is equivalent to the side wall of the aerosol release channel 10. Please refer to Figures 5 to 9. When the number of aerosol release channels 10 is multiple, the part where the aerosol generating matrix 100 separates the two adjacent aerosol release channels 10 (this part can also be called the partition wall located between the two adjacent aerosol release channels 10) is also the wall 20 described in the embodiment of the present application.

[0066] The specific thickness of the wall 20 can be adjusted according to design requirements. For example, the thickness of the wall 20 can be 0.1 mm, 0.2 mm, 0.35 mm, 0.6 mm, 0.8 mm, 0.9 mm, 1.1 mm, or 1.2 mm.

[0067] If the thickness of the wall 20 is greater than 1.2 mm, the wall 20 is too thick, which may result in the aerosol being unable to be quickly extracted and cooling inside the aerosol-generating matrix 100. If the thickness of the wall 20 is less than 0.1 mm, the wall 20 is too thin, and the aerosol generated per unit area of ​​the aerosol-generating matrix 100 by heating is insufficient to meet the user's puffing needs. In addition, the aerosol-generating matrix 100 is prone to deformation. If the cross-section of the aerosol-generating matrix 100 is circular, the deformation may result in a lack of roundness.

[0068] The thickness of the wall 20 is set within the range of 0.1 mm to 1.2 mm, which facilitates the rapid release of aerosol during the heating process. This improves aerosol extraction efficiency while also ensuring the carbonization rate of the aerosol generating matrix 100 and increasing its utilization rate. Furthermore, this thickness range also ensures that the aerosol generating matrix 100 has sufficient structural strength and is not easily deformed.

[0069] Preferably, the thickness of the wall 20 can be 0.3 mm to 0.5 mm (inclusive), for example, the thickness of the wall 20 can be 0.3 mm, 0.4 mm, or 0.5 mm. This size range ensures that the aerosol-generating substrate 100 has a high structural strength while being more conducive to the rapid release of the aerosol generated by the aerosol-generating substrate 100 when heated.

[0070] In one embodiment, the thickness difference of the wall 20 at different positions of the aerosol-generating substrate 100 may be 0% to 100% (inclusive).

[0071] The different positions mentioned here may be the same wall 20 or different walls 20 .

[0072] For example, taking the aerosol generating matrix 100 shown in Figures 1 to 4 as an example, when there is only one aerosol release channel 10, there is also only one wall 20 that constructs the aerosol release channel 10, and the thickness difference at different positions of the wall 20 can be 0 to 100%. When the thickness difference at different positions of the wall 20 is 0, it is equivalent to the wall 20 being an equal-thickness structure with the same thickness at any position. When the thickness difference at different positions of the wall 20 is greater than 0 and less than or equal to 100%, it is equivalent to the wall 20 being a non-equal-thickness structure with a maximum and minimum thickness, wherein the thickness difference between the maximum and minimum values ​​is greater than 0 and less than or equal to 100%.

[0073] For another example, taking the aerosol generating substrate 100 shown in Figures 5 and 6 as an example, when the aerosol generating substrate 100 has multiple aerosol release channels 10, the walls 20 located at different positions of the aerosol generating substrate 100 can be different walls 20 on the aerosol generating substrate 100 (such as the first wall 20a and any one of the second walls 20b shown in Figures 5 and 6, or any two of the multiple second walls 20b), or the same wall 20 on the aerosol generating substrate 100 (such as the first wall 20a shown in Figures 5 and 6, or any one of the second walls 20b). Furthermore, when the thickness difference between different walls 20 on the aerosol-generating substrate 100 is greater than 0 and less than or equal to 100%, if there are both walls 20 of unequal thickness and walls 20 of equal thickness, the thickness difference between the thickness of the walls 20 of equal thickness and the maximum thickness of the walls 20 of unequal thickness is greater than 0 and less than or equal to 100%, and the thickness difference between the thickness of the walls 20 of equal thickness and the minimum thickness of the walls 20 of unequal thickness is also greater than 0 and less than or equal to 100%. If there are at least two walls 20 of unequal thickness, then, of any two walls 20 of unequal thickness, the thickness difference between the maximum thickness of any one wall 20 of unequal thickness and the minimum thickness of the other wall 20 of unequal thickness is greater than 0 and less than or equal to 100%.

[0074] For example, the difference in thickness of the wall 20 at different positions of the aerosol-generating substrate 100 may be 0%, 20%, 30%, 50%, 70%, 85%, or 100%.

[0075] The thickness difference of the wall 20 at different locations of the aerosol-generating matrix 100 is 0-100%, which facilitates processing and manufacturing. For example, if the aerosol-generating matrix 100 is an extrusion-molded structure, this can ensure that the pressure differences at the force points at different extrusion locations of the extrusion die are small during the extrusion process, allowing the aerosol-generating matrix 100 to be extruded smoothly, stably and completely. However, if the thickness difference of the wall 20 at different locations of the aerosol-generating matrix 100 is greater than 100%, the aerosol-generating matrix 100 extruded by the extrusion die may be incomplete, for example, only a portion of the aerosol-generating matrix 100 may be extruded.

[0076] In one embodiment, for ease of description, S1 can be used to represent the cross-sectional area of ​​each aerosol release channel 10, and S2 can be used to represent the cross-sectional area of ​​the wall 20 that constructs the corresponding aerosol release channel 10. The ratio of S1 to S2 can be 1:1 to 5:1, that is, S1:S2 = 1:1 to 5:1 (including the endpoint values).

[0077] Specifically, if the ratio of S1 to S2 is less than 1:1, the cross-sectional area of ​​the aerosol release channel 10 is small, the pressure when the aerosol release channel 10 extracts the aerosol is large, the airflow rate is too fast, and the aerosol generating matrix 100 begins to release aerosol before it is sufficiently heated, thereby causing part of the aerosol to condense inside the aerosol generating matrix 100 and cannot be fully extracted. If the ratio of S1 to S2 is greater than 5:1, the cross-sectional area of ​​the aerosol release channel 10 is too large, the pressure when the aerosol release channel 10 extracts the aerosol is small, and the airflow rate is slow, which is not conducive to the extraction of aerosol.

[0078] Illustratively, the ratio of S1 to S2 may be 1:1, 2.5:1, 3:1, 4:1, or 5:1.

[0079] When the ratio of S1 to S2 is within the range of 1:1 to 5:1, the pressure at which the aerosol release channel 10 extracts the aerosol is moderate, and the airflow velocity is also moderate, thereby enabling the aerosol generated by heating the aerosol generating matrix 100 per unit area to be extracted sufficiently and quickly.

[0080] In one embodiment, referring to Figures 3 and 4 , for ease of description, the wall 20 that defines the outer contour of the aerosol-generating substrate 100 may be referred to as the first wall 20a. Portions of the inner surface of the first wall 20a may be recessed toward the outer side of the aerosol-generating substrate 100, such that a plurality of spaced-apart first grooves 30 are formed on the inner circumference of the first wall 20a.

[0081] The location of the first groove 30 in the first wall 20a is equivalent to reducing the thickness of the first wall 20a at this location. The aerosol generated by the heated aerosol generating substrate 100 can be quickly released through the first groove 30 for easy inhalation by the user.

[0082] The first groove 30 is suitable for the first wall 20 a having a relatively large thickness, such as a first wall 20 a having a thickness of 0.5 mm to 1.2 mm (including end values).

[0083] 3 and 4 , a portion of the outer surface of the first wall 20 a may also be recessed toward the inner side of the aerosol generating substrate 100 , so that a plurality of second grooves 40 spaced apart are formed on the outer periphery of the first wall 20 a .

[0084] Similar to the first groove 30, the location of the second groove 40 on the first wall 20a is equivalent to reducing the thickness of the first wall 20a at this location. The aerosol generated by the heated aerosol generating matrix 100 can be quickly released through the second groove 40 for easy inhalation by the user.

[0085] The second groove 40 is also suitable for the first wall 20 a having a relatively large thickness, such as a first wall 20 a having a thickness of 0.5 mm to 1.2 mm (including the end values).

[0086] The first wall 20a in Figures 3 and 4 is provided with a first groove 30 and a second groove 40 at the same time. Preferably, the first groove 30 and the second groove 40 can be arranged one by one opposite to each other along the thickness direction of the first wall 20a, which is equivalent to the second groove 40 being the outer side of the position where the first groove 30 is provided on the first wall 20a. This arrangement ensures that the first wall 20a has sufficient structural strength while also making the portion of the first wall 20a located between the first groove 30 and the second groove 40 have a smaller thickness, which is more conducive to the rapid release of aerosols.

[0087] In some embodiments, the first groove 30 and the second groove 40 may also be staggered.

[0088] It should be noted that the first wall 20 a is not limited to being provided with both the first groove 30 and the second groove 40 . In some embodiments, only the first groove 30 or only the second groove 40 may be provided.

[0089] In addition, Figures 3 and 4 show that the first groove 30 and the second groove 40 are provided on the first wall 20a of the aerosol generating substrate 100 having only one aerosol release channel 10. In other embodiments, for an aerosol generating substrate 100 having multiple aerosol release channels 10, at least one of the first groove 30 and the second groove 40 may also be provided on its first wall 20a.

[0090] In some embodiments, air holes can also be provided on the wall 20 as needed. The number of air holes can be one or more, and the location and manner of providing the air holes are not limited. For example, the air holes can pass through at least one of the two opposite ends of the wall 20, or can pass through at least one of the inner and outer surfaces of the wall 20. They can also be provided inside the wall 20 without passing through any position of the wall 20. It should be noted that the air holes described in the embodiments of the present application are holes in a macroscopic sense, and the air holes are mainly formed by processing. Therefore, the cross-sectional area and length and other dimensions of the air holes can be changed according to design requirements. Providing air holes is also more conducive to the rapid release of aerosols.

[0091] In one embodiment, referring to FIG. 5 to FIG. 8 , for an aerosol-generating substrate 100 having a plurality of aerosol release channels 10 , each aerosol release channel 10 may be constructed by different walls 20 .

[0092] For example, please refer to Figures 5 and 6. For the convenience of description, the different walls 20 in Figures 5 and 6 can be referred to as the first wall 20a and the second wall 20b, respectively. The first wall 20a constructs the outer contour of the aerosol generating substrate 100 and the hollow area inside the aerosol generating substrate 100. The second wall 20b is arranged in the hollow area to separate the hollow area into at least two aerosol release channels 10.

[0093] That is, at least two aerosol release channels 10 may be formed by providing the first wall 20 a and the second wall 20 b .

[0094] There are multiple second walls 20b in Figures 5 and 6, one side of each second wall 20b is connected to the first wall 20a, and the other opposite sides of each second wall 20b are connected to each other. That is, the second walls 20b are combined in the hollow area to form a radial shape, and each aerosol release channel 10 is constructed by the first wall 20a and two adjacent second walls 20b.

[0095] In other embodiments, there may be only one second wall 20b, and opposite sides of the second wall 20b are respectively connected to the first wall 20a, thereby separating two aerosol release channels 10 in the hollow area.

[0096] For example, referring to Figures 7 and 8 , for ease of description, the different walls 20 in Figures 7 and 8 may be referred to as the first wall 20a, the second wall 20b, and the third wall 20c, respectively. There are multiple second walls 20b, and the third wall 20c is annular. The first wall 20a defines the outer contour of the aerosol-generating substrate 100 and the hollow region within the aerosol-generating substrate 100. Multiple second walls 20b and third walls 20c are disposed within the hollow region. One side of each second wall 20b is connected to the first wall 20a, and the other, opposite side of each second wall 20b is connected to the third wall 20c. The third wall 20c defines the first aerosol release channel 10a. The first and third walls 20a, along with two adjacent second walls 20b, together define the second aerosol release channel 10b.

[0097] That is, the first aerosol release channel 10a and the plurality of second aerosol release channels 10b surrounding the first aerosol release channel 10a described in the previous embodiment can be formed by providing the first wall 20a, the second wall 20b and the third wall 20c.

[0098] It should be noted that, for an aerosol-generating substrate 100 having a plurality of aerosol-releasing channels 10, each aerosol-releasing channel 10 may not be constructed by different walls 20. For example, refer to FIG. 9 . The aerosol-generating substrate 100 in FIG. 9 also has a plurality of aerosol-releasing channels 10. However, the aerosol-generating substrate 100 cannot be clearly divided into different walls 20.

[0099] The present application also provides a microwave heating method for the aerosol-generating substrate 100 provided in any embodiment of the present application. Referring to FIG. 10 , the method includes the following steps:

[0100] Step S1: heating the aerosol generating substrate by using microwaves to release the aerosol generated by the aerosol generating substrate into the aerosol releasing channel.

[0101] Specifically, taking the aerosol generating matrix 100 shown in Figures 1 to 9 as an example, during the microwave heating process, the microwave field penetrates the physical structure of the aerosol generating matrix 100, and the polar molecules of the aerosol generating matrix 100 move and generate heat under the action of microwaves. After the aerosol generating matrix 100 is heated, an aerosol is generated, and the aerosol enters the aerosol release channel 10 and is discharged from the aerosol release channel 10.

[0102] It should be noted that microwave heating is only one feasible heating method. In other application scenarios, the aerosol generating matrix 100 can also be heated by other heating methods.

[0103] In one embodiment, for an aerosol-generating substrate having a plurality of aerosol release channels, the walls of a portion of the aerosol release channels may be heated each time.

[0104] Taking the aerosol generating matrix 100 shown in Figures 5 and 6 as an example, illustratively, microwaves can mainly heat the wall 20 of one aerosol release channel 10 at a time, so that the aerosol is mainly released into the aerosol release channel 10 constructed by the heated wall 20. After one heating is completed (for example, after the user takes one puff or a certain number of puffs), the microwaves will mainly heat the wall 20 of another aerosol release channel 10.

[0105] For example, microwaves can also heat the walls 20 of a portion of aerosol release channels 10 that is greater than one at a time (i.e., the number of heated aerosol release channels 10 is greater than one and less than the total number of aerosol release channels 10). After one heating is completed (for example, after the user takes one puff or a certain number of puffs), the microwaves will heat the walls 20 of another portion of aerosol release channels 10.

[0106] The aerosol generating device can be equipped with a rotating assembly. After the heating assembly has finished heating the wall 20 of the corresponding aerosol release channel 10, the rotating assembly can drive the aerosol generating substrate 100 to rotate, so that the other aerosol release channels 10 on the aerosol generating substrate 100 can rotate to a position corresponding to the microwave field generated by the heating assembly. In this way, the composition and temperature of the aerosol generated by the heating assembly after different heating of the wall 20 are relatively consistent, resulting in a more consistent taste experience for the user during inhalation.

[0107] Since the aerosol generating matrix 100 of the embodiment of the present application can fully and quickly release aerosols during the heating process, it is only necessary to heat the walls 20 of some of the aerosol release channels 10 in the multiple aerosol release channels 10 each time to meet the user's puffing needs. In addition, this heating method can increase the total number of heating times of the aerosol generating matrix 100, which is equivalent to increasing the number of puffs of the user, thereby improving the user experience.

[0108] In some embodiments, all aerosol release channels 10 may be heated simultaneously.

[0109] In one embodiment, for an aerosol generating substrate having a first aerosol release channel and a second aerosol release channel, the walls of some of the second aerosol release channels among the plurality of second aerosol release channels may be heated each time.

[0110] Taking the aerosol-generating substrate 100 shown in Figures 7 to 9 as an example, the aerosol is primarily released into the second aerosol release channel 10b formed by the heated wall 20, with a small amount of aerosol released into the first aerosol release channel 10a. In other words, only the wall 20 of the second aerosol release channel 10b is heated, while the wall 20 of the first aerosol release channel 10a does not need to be heated. It should be noted that for the wall 20 located between the first aerosol release channel 10a and the second aerosol release channel 10b, such as the third wall 20c shown in Figures 7 and 8, the side of the wall 20 closest to the second aerosol release channel 10b may be heated, while the side of the wall 20 closest to the first aerosol release channel 10a may not be heated.

[0111] For example, microwaves can heat only the wall 20 of one second aerosol release channel 10b at a time, so that the aerosol is mainly released into the second aerosol release channel 10b constructed by the heated wall 20, and a small amount of aerosol is released into the first aerosol release channel 10a. After one heating is completed (for example, after the user takes one puff or a certain number of puffs), the microwaves heat the wall 20 of another second aerosol release channel 10b.

[0112] Illustratively, microwaves can also heat a portion of the wall 20 of the second aerosol release channel 10b that is greater than one at a time (i.e., the number of heated second aerosol release channels 10b is greater than one and less than the total number of second aerosol release channels 10b). After one heating is completed (for example, after the user takes one puff or a certain number of puffs), the microwaves will heat another portion of the wall 20 of the second aerosol release channel 10b.

[0113] Similar to the previous embodiment, only the wall 20 of part of the second aerosol release channels 10b in the multiple second aerosol release channels 10b needs to be heated each time to meet the user's puffing needs. This heating method can also increase the total number of heating times of the aerosol generating matrix 100, which is equivalent to increasing the number of puffs of the user, thereby improving the user experience.

[0114] In some embodiments, all the second aerosol release channels 10b may be heated simultaneously.

[0115] In some embodiments, the wall 20 of the first aerosol release channel 10a may also be heated.

[0116] In the description of this application, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. mean 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 this application, the schematic representations of the above terms do 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 different embodiments or examples described in this application and features of different embodiments or examples, unless they are mutually inconsistent.

[0117] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application are intended to be within the scope of protection of the present application.

Claims

1. An aerosol generating substrate, the aerosol generating substrate having at least one aerosol release channel, and the thickness of the wall of the aerosol generating substrate constituting the aerosol release channel is 0.1 mm to 1.2 mm. 2 . The aerosol generating substrate according to claim 1 , wherein the wall has a thickness of 0.3 mm to 0.5 mm.

3. The aerosol generating substrate according to claim 1 or 2, wherein the thickness difference of the wall at different positions of the aerosol generating substrate is 0 to 100%; and / or, The aerosol generating substrate is an extruded structure.

4. The aerosol generating substrate according to claim 1 or 2, wherein the cross-sectional area of ​​each aerosol release channel is S1, the cross-sectional area of ​​the wall constituting the corresponding aerosol release channel is S2, and S1:S2=1:1-5:

1.

5. The aerosol generating substrate according to claim 1 or 2, wherein the wall body comprises a first wall body, the first wall body forming an outer contour of the aerosol generating substrate; Part of the inner surface of the first wall is recessed toward the outer side of the aerosol generating substrate, so that a plurality of first grooves arranged at intervals are formed on the inner circumference of the first wall; and / or, Part of the outer surface of the first wall is recessed toward the inner side of the aerosol generating substrate, so that a plurality of second grooves arranged at intervals are formed on the outer peripheral side of the first wall. 6 . The aerosol generating substrate according to claim 5 , wherein the aerosol generating substrate comprises a plurality of the first grooves and a plurality of the second grooves, and the first grooves and the second grooves are arranged opposite to each other in a thickness direction of the wall.

7. According to the aerosol generating substrate according to claim 1 or 2, the wall body includes a first wall body and a second wall body, the first wall body constructs the outer contour of the aerosol generating substrate and a hollow area located inside the aerosol generating substrate, and the second wall body is arranged in the hollow area to separate the hollow area into at least two aerosol release channels.

8. The aerosol generating substrate according to claim 7, wherein the number of the second wall bodies is plural, one side of each of the second wall bodies is connected to the first wall body respectively, and the other sides of each of the second wall bodies opposite to each other are connected to each other.

9. The aerosol generating substrate according to claim 1 or 2, wherein the aerosol release channel comprises at least one first aerosol release channel and a plurality of second aerosol release channels, and the plurality of second aerosol release channels surround the circumference of the first aerosol release channel.

10. The aerosol generating matrix according to claim 9, wherein the wall body comprises a first wall body, a plurality of second wall bodies, and a third wall body in an annular shape, wherein the first wall body constructs the outer contour of the aerosol generating matrix and a hollow area located inside the aerosol generating matrix; a plurality of second wall bodies and the third wall body are both arranged in the hollow area, one side of each second wall body is respectively connected to the first wall body, and the other side opposite to each second wall body is respectively connected to the third wall body; the first aerosol release channel is constructed in the third wall body, and the first wall body, the third wall body and two adjacent second wall bodies jointly construct the second aerosol release channel.

11. An aerosol generating substrate according to claim 1 or 2, wherein the wall is provided with pores.

12. An aerosol generating substrate according to claim 1 or 2, wherein the wall comprises an absorbing material; and / or The wall is used to absorb microwaves and generate heat to generate aerosol.

13. The aerosol generating substrate according to claim 1 or 2, wherein one end of the aerosol release channel is an open end penetrating the aerosol generating substrate, and the other end opposite to the aerosol release channel is a closed end; and / or, Both opposite ends of the aerosol release channel are open ends penetrating the aerosol generating substrate.

14. A microwave heating method for an aerosol-generating substrate according to any one of claims 1 to 13, the method comprising: The aerosol generating substrate is heated by microwaves so that the aerosol generated by the aerosol generating substrate is released into the aerosol releasing channel.

15. The microwave heating method according to claim 14, wherein the number of the aerosol release channels is multiple, and the method comprises: The walls of some of the aerosol release channels among the plurality of aerosol release channels are heated each time.

16. The microwave heating method according to claim 14, wherein the aerosol release channel comprises at least one first aerosol release channel and a plurality of second aerosol release channels, the plurality of second aerosol release channels surround the first aerosol release channel, and the method comprises: The walls of some of the second aerosol release channels among the plurality of second aerosol release channels are heated each time.

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