Aerosol Generating Substrate, Aerosol Generating Product, and Aerosol Generating Device

This application is a continuation of International Patent Application No. PCT/CN2023/135439, filed on Nov. 30, 2023, which claims priority to Chinese Patent Application No. 202310186462.6, filed on Feb. 20, 2023. The entire disclosure of both applications is hereby incorporated by reference herein.

This application relates to the technical field of aerosol generation products, and in particular, to an aerosol generating substrate, an aerosol generating product, and an aerosol generating device.

Aerosol generation products include aerosol generation products for forming an aerosol by burning and aerosol generation products for forming an aerosol by heat-not-burn. A typical aerosol generation product for forming an aerosol by heat-not-burn includes an aerosol generating substrate, such as a tobacco material, a scented material, or/and an atomizing agent, that can be atomized to form an aerosol. The aerosol generation product is heated by using an external heat source, for the aerosol generating substrate to be just heated enough for emitting an aerosol, and the aerosol generating substrate does not combust. By loading an atomizing agent, the atomizing agent is released by high-temperature heat during use, to form an aerosol.

In related technologies, a heating element is disposed in a heating bin of an aerosol generating device. When suction is required, an aerosol generation product is inserted into the heating bin of the aerosol generating device, the heating element heats the aerosol generation product. When an aerosol generating substrate is separated from the heating element after used, the aerosol generating substrate and the heating element move relative to each other. Consequently, solid particles such as a residual adhered to the heating element are prone to falling into the aerosol generating device, and a user needs to periodically clean the heating bin. This not only increases the workload of the user, but also may cause damage to the heating element if the cleaning is improper.

In an embodiment, the present invention provides an aerosol generating substrate, wherein the aerosol generating substrate has a columnar shape, an interior of the aerosol generating substrate is provided with at least one insertion hole for a heating element, and the at least one insertion hole extends along a length direction of the aerosol generating substrate and passes through at least one end of the aerosol generating substrate along the length direction.

In an embodiment, the present invention provides an aerosol generating substrate, an aerosol generating product, and an aerosol generating device. Therefore, the aerosol generating substrate is not prone to being adhered to a heating element or falling into a heating bin, and the cleaning workload of a user can be reduced.

In an embodiment, the present invention provides an aerosol generating substrate. The aerosol generating substrate has a columnar shape, and the interior of the aerosol generating substrate is provided with a heating element insertion hole. The heating element insertion hole extends along the length direction of the aerosol generating substrate and passes through at least one end of the aerosol generating substrate along the length direction.

In an embodiment, the aerosol generating substrate is provided with a channel, and the channel extends along the length direction of the aerosol generating substrate and passes through at least one end of the aerosol generating substrate along the length direction.

In an embodiment, one heating element insertion hole is provided and extends along the length direction of the aerosol generating substrate, and the heating element insertion hole is provided on the central axis of the aerosol generating substrate.

In an embodiment, the channel includes a plurality of air holes, the plurality of air holes are provided inside the aerosol generating substrate, and on the cross section perpendicular to the length direction, the cross section of the heating element insertion hole is an elongated strip and the air holes are symmetrically distributed about the heating element insertion hole.

In an embodiment, the channel includes a plurality of air holes, the plurality of air holes are provided inside the aerosol generating substrate, the heating element insertion hole is a columnar hole, and in a plane perpendicular to the length direction of the aerosol generating substrate, the air holes are symmetrically distributed by using the heating element insertion hole as the origin.

In an embodiment, the channel includes a plurality of air holes, the plurality of air holes are provided inside the aerosol generating substrate, the central line of the heating element insertion hole along the extension direction coincides with the central axis of the aerosol generating substrate along the length direction, and the air holes are arranged along a circumferential direction around the center of the heating element insertion hole.

In an embodiment, the channel includes a plurality of air holes, the plurality of air holes are provided inside the aerosol generating substrate, and all of the air holes are distributed on a plurality of trajectory lines, where air holes on an individual trajectory line are linearly arranged along a first direction, the plurality of trajectory lines are arranged along a second direction, and the first direction is not parallel to the second direction.

In an embodiment, the air holes on the individual trajectory line are linearly arranged along the first direction, the plurality of trajectory lines are arranged in parallel along the second direction, and the first direction is perpendicular to the second direction.

In an embodiment, the distance between two adjacent air holes on the individual trajectory line is equal to the distance between two adjacent trajectory lines.

In an embodiment, the air holes on the individual trajectory line are arranged along a circumferential direction around the center of the aerosol generating substrate, and the plurality of trajectory lines are arranged in concentric circles along the radial directions of the aerosol generating substrate.

In an embodiment, the air holes on the individual trajectory line are repeatedly arranged, and in the directions extending outward along the radial directions of the aerosol generating substrate, the hydraulic diameter on each trajectory line gradually increases.

In an embodiment, the air holes on the individual trajectory line are repeatedly arranged, and in the directions extending outward along the radial directions of the aerosol generating substrate, the spacing between air holes on two adjacent trajectory lines gradually decreases.

In an embodiment, the aerosol generating substrate includes an integral structure.

In an embodiment, the heating element insertion hole passes through two opposite ends of the aerosol generating substrate along the length direction; and in the plane perpendicular to the length direction, the cross-sectional shape of the aerosol generating substrate is a circle.

In an embodiment, the channel includes a plurality of helical holes, the helical holes are provided inside the aerosol generating substrate, and at least a part of regions of the helical holes along the extension direction has a curved shape having a curvature not being 0.

In an embodiment, the channel includes a hole slot, and the hole slot is provided on a circumferential surface of the aerosol generating substrate.

In an embodiment, the aerosol generating substrate is a particle combination, micro pores are formed among particles of the particle combination, a plurality of the micro pores are communicated with each other to form micro air passages communicated with the channel and/or the heating element insertion hole, and the cross-sectional area of each micro pore ranges from 0.7 nmto 710 μm; or, the hydraulic diameter of the micro pores ranges from 10 nm to 30 μm.

In an embodiment, on the cross section perpendicular to the length direction of the aerosol generating substrate, the cross-sectional shape of the heating element insertion hole is an elongated strip, a circle, an ellipse, a ring, a circular arc, a zigzag, or a polygon.

In an embodiment, on the cross section perpendicular to the length direction of the aerosol generating substrate, the cross-sectional shape of the heating element insertion hole is an elongated strip; the length of the cross section ranges from 1 mm to 40 mm; and/or the width of the cross section ranges from 0.05 mm to 3 mm.

In an embodiment, the cross-sectional shape of the heating element insertion hole is a circle, and the aperture of the heating element insertion hole ranges from 0.1 mm to 3 mm.

In an embodiment, the heating element insertion hole is a columnar hole, and the cross-sectional area of the heating element insertion hole ranges from 0.01 mmto 7.1 mm.

The embodiments of this application further provide an aerosol generating product, including:

In an embodiment, the functional segment further includes a temperature-reducing segment, and the temperature-reducing segment is located between the filter segment and the aerosol generating substrate.

The embodiments of this application further provide an aerosol generating device, for being used jointly with the aerosol generating product, where the aerosol generating device includes a heating component, the heating component includes a heating element, and the heating element is configured to be inserted into the heating element insertion hole and heat the aerosol generating substrate to form an aerosol.

According to the aerosol generating substrate, the aerosol generating product, and the aerosol generating device provided in the embodiments of this application, the aerosol generating substrate has a columnar shape, for example, may be an integral structure manufactured by using an extrusion process, the interior of the aerosol generating substrate is provided with a heating element insertion hole extending along the length direction of the aerosol generating substrate, and the heating element insertion hole passes through at least one end of the aerosol generating substrate along the length direction. By providing the heating element insertion hole in the interior of the aerosol generating substrate, the shape of the heating element insertion hole fits with that of the heating element of the aerosol generating device, for the heating element on the aerosol generating device to be in insertion-fit with the heating element insertion hole, so as not to extrude the structure around the heating element insertion hole, and for the aerosol generating substrate to be kept in a relatively uniform substrate density. Therefore, the problems of deformation or crack of an outer wrapping layer that wraps around the circumferential outer portion of the aerosol generating substrate are not prone to occurring. In addition, when the aerosol generating substrate is separated from the aerosol generating device after being used up by heating, the aerosol generating substrate is not prone to being adhered to the heating element or falling into a heating bin. Therefore, the heating bin is not prone to being polluted and the cleaning workload of a user can be reduced.

It is to be noted that, embodiments and technical features in the embodiments in this application may be combined without conflicts. Detailed descriptions in specific implementations should be understood as explanatory notes for the purpose of this application and should not be regarded as improper limitations on this application.

The embodiments of this application provide an aerosol generating substrate. Referring toto, an aerosol generating substratehas a columnar shape, and the interior of the aerosol generating substrateis provided with a heating element insertion hole. The heating element insertion holeextends along the length direction of the aerosol generating substrateand passes through at least one end of the aerosol generating substratealong the length direction.

The aerosol generating substrateis configured to form an aerosol when being heated, for vaping by a user. In the embodiments of this application, the aerosol generating substratehas an approximately columnar shape. The columnar shape may be a cylindrical shape (that is, the cross-sectional shape is a circle), a prismatic shape (that is, the cross-sectional shape is a polygon), an elliptic cylindrical shape (that is, the cross-sectional shape is an ellipse), or the like, which is not limited herein.

Exemplarily, the aerosol generating substrateis a particle combination, which is also referred to as a powder combination, and is a type of a recombined smoother substrate, for example, a recombined smoother substrate including components such as a smoking agent and a smoother. The aerosol generating substrateis an integral structure, for example, an integral structure that may be formed by extrusion forming, injection, or an extrusion process. The extrusion forming refers to a processing method in which a material mixture is added to an extruder, and the material is thermally plasticized by means of an action between a barrel and a rod of the extruder, to be then pushed forward by the rod, and continuously passes through a mold at a discharging port of the extruder, to form products or semi-products having various cross sections. The structure of the substrate formed by extrusion forming presents a strip shape. In this way, whenever being heated for vaping or after the heating stops, the aerosol generating substrateis an integral substrate, which is not prone to disintegrating or falling. Therefore, the problems such as loosening of flakes, falling off of filiform-like components and particle components, being difficult to be cleaned of a flake-like, filiform-like, or scattered particle aerosol generating substratein the existing technology, and the problem of the uneven composition of the aerosol generating substratein the existing technology are solved.

The interior of the aerosol generating substrateis provided with a heating element insertion hole. The heating element insertion holeextends along the length direction of the aerosol generating substrate. In other words, the heating element insertion holeextends along the longitudinal direction of the aerosol generating substrate. The heating element insertion holeis configured to be in insertion-fit with a heating elementof an aerosol generating device.

That the heating element insertion holepasses through at least one end of the aerosol generating substratealong the length direction means that the heating element insertion holemay run through two opposite ends of the aerosol generating substratealong the length direction (referring to), or one end of the heating element insertion holepasses through an end surface of the aerosol generating substratealong the length direction, and the other end of the heating element insertion holeis a blind end (referring to). It may be understood that, compared with that the heating element insertion holepasses through one end of the aerosol generating substratealong the length direction, the heating element insertion holerunning through two ends of the aerosol generating substratealong the length direction is more beneficial to releasing of the aerosol.

The embodiments of this application further provide an aerosol generating product, referring toto, including a functional segment, an outer wrapping layer, and the aerosol generating substrateaccording to any embodiment of this application.

It is to be noted that, the aerosol generating productforms an aerosol by relying on the aerosol generating substrate, and the functional segmentis not configured to generate an aerosol. The functional segmentis disposed at one end of the aerosol generating substratealong the length direction. Referring toto, the functional segmentincludes at least a filter segmentconfigured to filter the aerosol. The filter segmentmay alternatively be referred to as a filtering mouthpiece. A user vapes the aerosol undergone filtering by the filter segmentof the functional segment.

It is to be noted that, the aerosol generating product in the embodiments of this application is applicable to vaping by means of burning, or may be applicable to vaping by means of heat-not-burn. In the embodiments of this application, descriptions are provided by using an example in which the aerosol generating productis applicable to vaping by means of heat-not-burn.

The embodiments of this application further provide an aerosol generating device, configured to be used jointly with the aerosol generating product provided in the embodiments of this application. Referring toto, the aerosol generating deviceincludes a heating component, the heating component includes a heating element, and the heating elementis configured to be inserted into a heating element insertion holeof an aerosol generating substrateand heat the aerosol generating substrateto generate an aerosol.

Specifically, referring toto, the aerosol generating deviceincludes a housingand a power supply component disposed in the housing. The housingis provided with an accommodating bin. An electrical energy output portion of the power supply component is disposed in the accommodating bin or around a side wall of the accommodating bin. When a portion of the aerosol generating productcorresponding to a length range of the aerosol generating substrateis inserted into the accommodating bin, the electrical energy output portion transmits electrical energy to the heating elementin a contact or non-contact manner. The heating elementreceives energy from the outside to generate heat, to further heat and atomize the aerosol generating substrate, to generate an aerosol.

In the embodiments of this application, the length direction does not particularly refer to the direction in which the contour of the appearance of the aerosol generating substrateis the longest. Specifically, the arrangement direction of the functional segmentand the aerosol generating substrateis the same as the length direction thereof. The direction in which the aerosol generating productis inserted into a heating binand the direction in which the aerosol generating productis removed from the heating binare both parallel to the length direction. The length of the aerosol generating substratealong the length direction may be longer, shorter, or the same as the length in other directions.

For example, when the contour of the appearance of the aerosol generating substrateis of a cylindrical shape, the length direction is the axial direction of the aerosol generating substrate. It should be noted that even when the axial length of the aerosol generating substrateis less than the diameter of the aerosol generating substrate, the length direction of the aerosol generating substrateis still the axial direction. Still for example, when the contour of the appearance of the aerosol generating substrateis of a rectangular block shape, the length direction is still the direction defined above, that is, the arrangement direction of the functional segmentand the aerosol generating substrate, or the direction in which the aerosol generating productis put in or removed from the heating bin. The length direction of the aerosol generating substratemay be any direction of the length, the width, and the height of the rectangular block.

For example, when the aerosol generating substrateis used alone, that is, not combined with the functional segment, the length direction is a direction perpendicular to the distance between two ends of the aerosol generating substrate. For example, when the aerosol generating substrateis a cylinder, the length direction is the direction perpendicular to the distance between two end surfaces. For example, when the aerosol generating substrateis a column whose cross section is a triangle, a polygon, an oblong circle, or an ellipse, the length direction is the axial direction. When the aerosol generating substrateis a rectangular block, the length direction of the aerosol generating substratemay be any direction of the length, the width, and the height of the rectangular block.

According to the aerosol generating substrateof the embodiments of this application, the heating element insertion holeis processed during preparing of the aerosol generating substrate, and during use, the heating elementis inserted into the heating element insertion hole. In this way, when the heating elementis inserted into the heating element insertion hole, the heating elementslightly extrudes or does not extrude the structure around the heating element insertion holeat all, for the aerosol generating substrateto be kept in a relatively uniform substrate density. Therefore, the problems of deformation or crack of an outer wrapping layerthat wraps around the circumferential outer portion of the aerosol generating substrateare not prone to occurring. In addition, when the aerosol generating substrateis separated from the aerosol generating deviceafter being used up by heating, the aerosol generating substrateis not prone to being adhered to the heating element or falling into a heating bin. Therefore, the heating binis not prone to being polluted and the cleaning workload of a user can be reduced.

Exemplarily, the aerosol generating substrateis an integral structure. Specifically, the aerosol generating substratemay be directly processed into a required shape by using a mold, instead of being connected by a plurality of independent sub-blocks by means such as sticking. In this way, the structural strength of the aerosol generating substrateis relatively good and is not prone to being scattered.

The material of the filter segmentincludes, but is not limited to, cellulose triacetate, cellulose diaceta, polypropylene glycol, polyester cellulose, and the like.

The outer wrapping layerwraps around the circumferential outer portion of the functional segmentand the aerosol generating substrate.

The material of the outer wrapping layeris not limited, and for example, includes, but is not limited to, one or a combination of materials such as fiber paper, a metal foil, metal foil composite fiber paper, polyethylene composite fiber paper, PE, and PBAT.