WO2024001834A1

WO2024001834A1 - Heat-not-burn aerosol generating article

Info

Publication number: WO2024001834A1
Application number: PCT/CN2023/100873
Authority: WO
Inventors: 袁涛; 刘刚; 林志文; 刘裕杰; 李涛; 李航; 汤建国; 梁峰
Original assignee: 深圳麦时科技有限公司
Priority date: 2022-07-01
Filing date: 2023-06-16
Publication date: 2024-01-04
Also published as: CN218354570U

Abstract

The present invention relates to a heat-not-burn aerosol generating article, comprising a filtering section, an airflow channel section, an aerosol generating material section and a wrapping layer. The filtering section, the airflow channel section and the aerosol generating material section are sequentially connected, and the wrapping layer is at least arranged outside the airflow channel section; at least one central air channel is arranged at the center of the airflow channel section, at least one side air channel is arranged between the airflow channel section and the wrapping layer, and the side air channel is in airflow communication with the central air channel; a first through hole is formed on the wrapping layer, a second through hole is formed on the airflow channel section, and external gas passes through the first through hole and then passes through the second through hole and the side air channel respectively to enter the central air channel. According to the present invention, the structure is simple, an aerosol generated by the aerosol generating material section is extracted by utilizing air, and two air channels, i.e., the central air channel and the side air channel, are arranged to combine central air inflow and side air inflow, so that the aerosol extraction effect is stable, the extraction efficiency is high, the aroma concentration after extraction is high, and the aerosol temperature is low.

Description

Heat-not-burn aerosol-generating products

Technical field

The present invention relates to the technical field of aerosol generation, and in particular to a heat-not-burn aerosol-generating product.

Background technique

Heat-not-burn aerosol-generating products generate aerosols by heating the aerosol-generating material rather than burning it. When this kind of aerosol-generating material is smoked with an electronic heating device, consumers can not only feel the fragrance of the aerosol-generating material, but also Moreover, the heat-not-burn aerosol-generating product is heated under low-temperature conditions, which can greatly reduce the undesirable substances produced when traditional cigarettes are burned at high temperatures.

Currently, heat-not-burn aerosol-generating products use air to extract aerosols through the side air inlet to the central air channel of the extraction piece. However, when the central air inlet is used for extraction, there is a certain gap between the air inlet hole and the base material section. Distance affects the extraction effect.

Contents of the invention

The technical problem to be solved by the present invention is to provide a heat-not-burn aerosol-generating product with high aerosol extraction efficiency in view of the shortcomings of the existing technology.

The technical solution adopted by the present invention to solve the technical problem is to construct a heated non-combustible aerosol-generating product, including a filter section, an airflow channel section, an aerosol-generating material section and a wrapping layer. The filter section, the airflow The channel section and the aerosol-generating material section are connected in sequence, and the wrapping layer is at least disposed outside the airflow channel section;

At least one central air channel is provided in the center of the air flow channel section, and at least one side flow air channel is provided between the air flow channel section and the wrapping layer, and the side flow air channel is in air flow communication with the central air channel;

The wrapping layer is provided with a first through hole, the air flow channel section is provided with a second through hole corresponding to the first through hole, and external air passes through the first through hole through the second through hole respectively. and the side flow airway enters the central airway.

Preferably, the air flow channel section is provided with a corrugated structure, and external air flows into the central air channel through the corrugated structure.

Preferably, the corrugated structure includes at least one groove provided on the air flow channel section, and at least one of the grooves forms the side flow air channel.

Preferably, at least one central hole is provided in the center of the air flow channel section, and at least one central hole penetrates the air flow channel section to form the central air channel.

Preferably, a filter element is provided in the central air passage.

Preferably, the material of the filter element includes any one of acetate fiber, polypropylene fiber, polylactic acid fiber, plant polysaccharide and plant porous material.

Preferably, the second through hole is a tapered through hole.

Preferably, the cross-sectional area of the end of the second through hole close to the central air channel is smaller than the cross-sectional area of the end of the second through hole close to the wrapping layer.

Preferably, the wrapping layer includes a side wall and a bottom wall, the side wall wraps the side of the airflow channel section and the aerosol-generating material section, and the bottom wall wraps the aerosol-generating material section away from the The end of the air flow channel section.

Preferably, the bottom wall of the wrapping layer is provided with an air inlet hole, and the air inlet hole is in air flow communication with the central air channel.

Implementing the present invention has the following beneficial effects: The present invention is configured as a double airway including a central airway and a side flow airway, and matches the central air intake with the side flow air intake, so that the aerosol extraction effect is stable, the extraction efficiency is high, and the extraction efficiency is high. The final aroma concentration is high. This heat-not-burn aerosol-generating product has a simple structure and uses air to extract the aerosol generated by the aerosol-generating material section. The air used to extract the aerosol does not need to pass through the aerosol-generating material section, and the temperature is low. While extracting the aerosol, it also It has a cooling effect; the structure is simple, and the material cost is significantly reduced; at the same time, the processing technology is simpler, the operation is more convenient, and the industrialization is easier.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and examples. In the accompanying drawings:

Figure 1 is a schematic structural diagram of an embodiment of the heat-not-burn aerosol-generating product of the present invention;

Figure 2 is a schematic structural diagram of another embodiment of the heat-not-burn aerosol-generating product of the present invention;

Figure 3 is a cross-sectional view of the air flow channel section of the present invention.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, what needs to be understood is "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationship shown in the drawings and are constructed and operated in specific orientations. It is only for the convenience of describing the present technical solution, and does not indicate that the device or element referred to must have a specific orientation, and therefore cannot be understood as a limitation of the present invention.

It should also be noted that, unless otherwise expressly stipulated and limited, terms such as "installation", "connection", "connection", "fixing" and "setting" should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. It can be detachably connected or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first", "second", "third", etc. are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, Features defined as "first," "second," "third," etc. may explicitly or implicitly include one or more of these features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the present invention in unnecessary detail.

Referring to Figures 1 to 2, a heat-not-burn aerosol-generating product of the present invention is shown. The structure of the heat-not-burn aerosol-generating product can be divided into three sections, including a filter section 1, an airflow channel section 2 and an aerosol generation section. Material section 3; wherein, the filter section 1, the air flow channel section 2 and the aerosol generating material section 3 are connected in sequence, and a wrapping layer 4 is provided outside the three, that is, the filter section 1, the air flow channel section 2 and the aerosol generating material section are connected in sequence. The material section 3 is wrapped by a wrapping layer 4; the wrapping layer 4 shown in Figures 1 and 2 is in its unfolded state; the airflow channel section 2 can also be called an aerosol extraction piece, which is for the purpose of extracting aerosols . It should be noted that the wrapping layer 4 only needs to wrap at least the air flow channel section 2 . In other embodiments, the filter section 1 , the air flow channel section 2 and the aerosol generating material section 3 can be wrapped by different packaging materials and then assembled into one body. , can be selected according to the actual situation, and this application does not limit this.

Specifically, the material of the filter section 1 includes any one of acetate fiber, polypropylene fiber, paper filter rod, reconstituted tobacco leaves, polylactic acid fiber, resin, plant polysaccharide, resin and plant porous materials, and the aerosol is processed Filtration and adsorption can achieve the effect of improving aerosol purity and comfort. It is understandable that the material of the filter section 1 can also include a combination of two or more of the above materials.

At least one central air channel 21 is provided in the center of the air flow channel section 2. Furthermore, at least one central air channel 21 is provided in the center of the air flow channel section 2 along the axial direction. At least one side flow air channel 23 is provided between the air flow channel section 2 and the wrapping layer 4, and the side flow air channel 23 is in air flow communication with the central air channel 21; the wrapping layer 4 is provided with a first through hole 41, and the air flow channel section 2 is provided with a first through hole 41. The second through hole 22 corresponds to the position of the first through hole 41, and the external air enters the central air channel 21 through the first through hole 41, the second through hole 22 and the side flow air channel 23 respectively. The number of the first through holes 41 and the second through holes 22 is not specifically limited and can be adjusted according to the actual situation. It is understood that the number of the first through holes 41 and the number of the second through holes are generally equal. is the corresponding setting. Specifically, the second through hole 22 is provided on the air flow channel section 2 . The second through hole 22 is connected with the central air channel 21 to form an air inlet channel. The second through hole 22 can be any part of the air flow channel section 2 . Positionally, the air inlet channel is connected with the central air channel 21 and the side flow air channel 23 on the air flow channel section 2 .

Further, the second through hole 22 may be a tapered through hole. The cross-sectional area of the end of the second through hole 22 close to the central air channel 21 is smaller than the cross-sectional area of the end of the second through hole 22 close to the wrapping layer 4 . It can also be understood that the inner surface area of the second through hole 22 is smaller than the outer area, where the inner surface area refers to is the cross-sectional area on the side of the second through hole 22 close to the central air channel 21 , and the outer surface area refers to the cross-sectional area on the side of the second through hole 22 close to the wrapping layer 4 . The difference between the inner surface area and the outer surface area generates a pressure difference, causing part of the airflow to flow from the side flow airway 23 through the airflow channel section 2 and then merge into the central airway 21. In another embodiment, the second through hole 22 may also be a rectangular through hole. In other embodiments, the second through hole 22 can also be other polygonal through holes, circular or oval through holes, and the present invention is not limited thereto.

During suction, lateral air is sucked in from the first through hole 41, and a part of the air enters downward along the side flow air channel 23 on the outer wall of the air flow channel section 2, and then enters the center at the intersection of the bottom of the air flow channel section 2 and the aerosol generating material section 3. The air channel 21 forms a negative pressure here to extract the aerosol generated by the aerosol generating material section 3; while the other part of the air will directly enter the central air channel 21 of the air flow channel section 2 through the second through hole 22, and It flows upward along the central airway 21 and creates a negative pressure in the upper part of the central airway 21 to extract the aerosol generated by the aerosol generating material section 3. The aerosol extracted through these two parts then enters the mouth of the smoker through the filter section 1. The external airflow extracts aerosols simultaneously through two types of channels, the center and the side flow. Compared with the single center air intake extraction, the side flow air intake extraction is added. During the side flow extraction, the air flow is closer to the aerosol generating material section 3 , the extraction rate of this part of the air flow is higher, thereby increasing the extraction rate; in addition, retaining the central air inlet extraction can avoid the side flow air inlet channel being partially blocked due to deformation of aerosol-generating products caused by processing or other reasons, causing unstable suction resistance. .

Furthermore, the air flow channel section 2 is provided with a corrugated structure, and the external air flows into the central air channel 21 through the corrugated structure. As shown in Figure 3, this figure is a cross-sectional view of the air flow channel section 2; specifically, the corrugated structure includes at least one groove axially disposed on the air flow channel section 2, and at least one groove forms a side flow air channel 23. The corrugated structure Divided into an inner layer and an outer layer, at least one groove is provided between the inner layer and the outer layer to form a side flow air channel 23; this embodiment includes several grooves, and the length of each groove is consistent with the air flow channel. The heights of the sections are approximately equal, and the plurality of grooves are arranged between the inner and outer layers of the corrugated structure to form side flow air channels 23; the center of the air flow channel section 2 is provided with at least one central hole, and at least one central hole penetrates axially The airflow channel section 2 forms a central airway 21. The cross-sectional shape of the central airway 21 can be set to any one of circular, rectangular, zigzag, five-pointed star, oval, honeycomb and other shapes to carry out aerosol treatment. extract.

Furthermore, a filter material can be optionally added to the central air channel 21 of the airflow channel section 2 to form a filter element to filter aerosol; the material of the filter element can be cellulose acetate, polylactic acid fiber, plant polysaccharide or plant porous material. The aerosol generated by the aerosol generating material section 3 can first pass through the filter material provided in the central airway 21 to complete preliminary filtration, and then the preliminarily filtered aerosol can be subjected to secondary filtration through the filter section 1, and finally enter the pump. Inhaler's mouth.

Furthermore, the aerosol-generating material section 3 can also be called a base material section, and the material of the aerosol-generating material section 3 can include any one of solid base materials such as filaments, sheets, granules, powders, and pastes. or more.

Furthermore, the shape of the wrapping layer 4 may be a sheet or a tube, and the material of the wrapping layer 4 includes any one or more of paper, tin foil, and aluminum foil. The wrapping layer 4 includes a side wall and a bottom wall. The side wall wraps the filter section 1, the air flow channel section 2 and the side of the aerosol generating material section 3. The bottom wall of the wrapping layer 4 wraps the aerosol generating material section 3 away from the air flow channel section 2. Ends.

Specifically, the wrapping layer 4 is in the shape of a flexible sheet, which can be formed by rolling paper. When it is unfolded, it can be in the shape of a paper sheet. When it is bent, it can form a sheet that can integrally wrap the filter section 1, the airflow channel section 2 and the aerosol. A hollow columnar structure of material segment 3 is generated. In another embodiment, the wrapping layer 4 can be tubular, that is, a preformed paper tube. The tubular wrapping layer 4 is integrally placed outside the filter section 1 , the airflow channel section 2 and the aerosol generating material section 3 .

Further, the bottom wall of the wrapping layer 4 can be set as a sealing structure, so that the bottom of the heat-not-burn aerosol-generating product is sealed and airtight, and only its side portion is air-intaken. The aerosol-generating material is heated in an oxygen-free environment, making it purer. . In another embodiment, the bottom wall of the wrapping layer 4 is provided with an air inlet, and the air inlet is in air flow communication with the central air channel 21 so that the bottom and sides of the heated non-burning aerosol-generating product can receive air at the same time. Helps increase atomization volume, reduce suction resistance and mouth temperature when smoking.

As shown in Figure 1, in some embodiments, the length of the filter section 1 is 8 mm, its material is acetate fiber, and its suction resistance is 320 Pa; the length of the air flow channel section 2 is 25 mm, and there is a strip in the center of the air flow channel section 2 The central air channel 21 axially penetrates, the cross section of the central air channel 21 is circular, its diameter is 4.0mm, and its material can be paper; the corrugated structure of the side flow air channel 23 of the air flow channel section 2 is specifically made of paper bending and rolling. It is formed into an irregular corrugated shape and wrapped around the outer layer of the central air duct. The depth of the groove formed by the irregular corrugated paper is 0.1mm-2.0mm; the wrapping layer 4 is paper material, which is wrapped around the filter section 1, the air flow channel section 2 and the air flow channel section 2. The thickness of the three outer layers of the sol-generating material section 3 and the wrapping layer 4 is 0.1mm, and the bottom is provided with an air inlet hole to ventilate with the outside. The bottom and side parts are inhaled at the same time, which helps to increase the amount of atomization and reduce the Suction resistance and mouth temperature.

The wrapping layer 4 is provided with a first through hole 41, and the airflow channel section 2 is provided with a second through hole 22 corresponding to the first through hole 41. The position of the second through hole 22 is 20 mm from the bottom of the aerosol generating material section 3 ; The second through hole 22 is connected with the central air channel 21. The inner cross section of the second through hole 22 that contacts one side of the central air channel 21 is approximately circular, and the diameter of the inner cross section is 0.45mm; the second through hole 22 is connected to the wrapping layer The outer cross section of 4 one side of the contact is approximately circular, and the diameter of the outer cross section is 0.65mm; the number of the second through holes 22 is 4, and they can be evenly distributed at circumferential intervals, or can be arbitrarily located on the air flow channel section 2 The position setting is not specifically limited here; the material of the aerosol-generating material section 3 is tobacco flakes, that is, reconstituted tobacco leaves, and the length of the aerosol-generating material section 3 is 12 mm.

As shown in Figure 2, in other embodiments, the length of the filter section 1 is 10mm, its material is acetate fiber, and its suction resistance is 500Pa; the length of the airflow channel section 2 is 23mm, and eight airflow channel section 2 are provided on the surface. The depth of each groove is 0.6mm; the center of the air flow channel section 2 is provided with an axially penetrating central air channel 21. The cross section of the central air channel 21 is rectangular, specifically square, and its material is silica gel; wrapped Layer 4 is paper material, its thickness is 0.15mm, and the bottom is a sealed structure. The bottom seal is airtight, and only the side is air-intake. The base material in the aerosol-generating material section 3 is heated in an oxygen-free environment, which is purer; paper The quality wrapping layer 4 is provided with a first through hole 41, and the airflow channel section 2 is provided with a second through hole 22 corresponding to the first through hole 41. The second through hole 22 is located at a distance from the bottom of the aerosol generating material section 3 25mm; the second through hole 22 is connected with the central air channel 21, and the inner section of the second through hole 22 that contacts one side of the central air channel 21 is approximately square, and the side length of the inner section is 0.4mm; the second through hole 22 is connected to the package The outer cross-section contacted by one side of layer 4 is approximately square, and the diameter of the outer cross-section is 0.6mm; the number of second through holes 22 is 6, and they can be evenly distributed at circumferential intervals, or can be arbitrarily located on the air flow channel section 2 The position setting is not specifically limited here; the material of the aerosol-generating material section 3 is shredded tobacco, and the length of the aerosol-generating material section 3 is 15 mm.

The present invention is configured as a double airway including a central airway and a side flow airway, and matches the central air intake with the side flow air intake, so that the aerosol extraction effect is stable, the extraction efficiency is high, and the aroma concentration after extraction is high. During suction, air can enter from the side flow air channels formed by the grooves on the surface of the air flow channel section and the central air channel formed by the central hole of the air flow channel section, and the aerosol generated by the heated aerosol generating material section is extracted, and most of the air is not Heat is exchanged directly through the aerosol-generating material section. The base material of the aerosol-generating material section is less affected by air flow disturbance. The air entering from the air flow channel section can dilute the high-temperature aerosol to produce a cooling effect. The aerosol temperature is lower, which can The temperature of the aerosol reaching the lip is kept below 50°C, and the aerosol is relatively pure. Moreover, the structure of the aerosol-generating product is simplified to a three-stage type based on the general four-stage type. The general classic four-stage type includes the basic Among the material section, heat insulation section, cooling section, and filter section, the present invention simplifies the cooling section, heat insulation section, and filter section to include an airflow channel section 2 and a filter section 1, which greatly simplifies the aerosol-generating product. structure; and the overall material cost is significantly lower than that of the four-stage and five-stage types; at the same time, the processing technology is simpler, the operation is more convenient, and the industrialization is easier.

It can be understood that the above embodiments only express the preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention; it should be noted that for those of ordinary skill in the art, In other words, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present invention; therefore, anything falling within the scope of the claims of the present invention All equivalent transformations and modifications shall fall within the scope of the claims of the present invention.

Claims

A heat-not-burn aerosol-generating product, characterized in that it includes a filter section (1), an airflow channel section (2), an aerosol-generating material section (3) and a wrapping layer (4). The filter section (1) ), the air flow channel section (2) and the aerosol generating material section (3) are connected in sequence, and the wrapping layer (4) is at least arranged outside the air flow channel section (2);

At least one central air channel (21) is provided in the center of the air flow channel section (2), and at least one side flow air channel (23) is provided between the air flow channel section (2) and the wrapping layer (4). The side flow airway (23) is in airflow communication with the central airway (21);

The wrapping layer (4) is provided with a first through hole (41), and the airflow channel section (2) is provided with a second through hole (22) corresponding to the first through hole (41). External air enters the central air channel (21) through the first through hole (41), the second through hole (22) and the side flow air channel (23) respectively.
The heat-not-burn aerosol-generating product according to claim 1, characterized in that the air flow channel section (2) is provided with a corrugated structure, and external air flows into the central air channel (21) through the corrugated structure. )middle.
The heat-not-burn aerosol-generating product according to claim 2, characterized in that the corrugated structure includes at least one groove provided on the air flow channel section (2), and the at least one groove forms the Describe the lateral flow airway (23).
The heat-not-burn aerosol-generating product according to claim 1, characterized in that at least one central hole is provided in the center of the air flow channel section (2), and at least one central hole penetrates the air flow channel section (2) ) to form the central airway (21).
The heat-not-burn aerosol-generating product according to claim 1, characterized in that a filter element is provided in the central air channel (21).
The heat-not-burn aerosol-generating product according to claim 5, wherein the material of the filter element includes any one of acetate fiber, polypropylene fiber, polylactic acid fiber, plant polysaccharide and plant porous material.
The heat-not-burn aerosol-generating product according to claim 1, wherein the second through hole (22) is a tapered through hole.
The heat-not-burn aerosol-generating product according to claim 7, characterized in that the cross-sectional area of the second through hole (22) close to the end of the central air channel is smaller than the cross-sectional area of the second through hole (22) close to the central air channel. The cross-sectional area of one end of the wrapping layer (4).
The heat-not-burn aerosol-generating product according to claim 1, wherein the wrapping layer (4) includes a side wall and a bottom wall, and the side wall wraps the airflow channel section (2) and the The bottom wall wraps the side of the aerosol-generating material section (3) away from the end of the aerosol-generating material section (3) away from the airflow channel section (2).
The heat-not-burn aerosol-generating product according to claim 9, characterized in that the bottom wall of the wrapping layer (4) is provided with an air inlet hole, and the air inlet hole is connected with the central air channel (21) Airflow connection.