Non-combustion / heated aerosol generating products

Abstract

The non-combustion, heated aerosol-generating product includes an outer tube (1), which includes, from upstream to downstream, an aerosol-generating material section (3) and an air guide fixture (5) having a central airflow path (51) arranged in the axial direction and a cross-sectional area smaller than that of the outer tube (1). An air inlet (11) is provided in the side wall of the outer tube (1) surrounding the air guide fixture (5). A gap between the outer wall of the air guide fixture (5) and the inner wall of the outer tube (1) forms a peripheral airflow path (52). The peripheral airflow path (52) communicates with the central airflow path (51) at the upstream end surface of the air guide fixture (5). By skillfully designing the airflow path, temperature fluctuations caused by air passing through the aerosol-generating material section (3) can be avoided, and an extraction effect can be achieved on the aerosol in the aerosol-generating material section (3).

Description

[Technical field]

[0001] The present invention is in the field of aerosol generating products. [Background technology]

[0002] In recent years, the non-combustion generation of aerosols by heating aerosol-generating materials with electronic devices has become the mainstream aerosol generation method, replacing the conventional combustion-type cigarettes. Typically, the aerosol-generating materials may be solid plant leaf materials containing the appropriate substances and components, and may further include flavorings to generate aerosols with unique aromas under heated conditions, which may be inhaled by the user.

[0003] However, current non-combustion, heated aerosol generating products have the following issues:

[0004] 1. In current non-combustion and heating products, the airflow path is almost all unidirectional. During the inhalation process, air enters from the end of the tobacco stick, passes through the heated tobacco leaf material, and carries out the aerosol generated by the heating and decomposition of the material, and then enters the inhaler's mouth. During the air flow process triggered by the inhalation action, cold air is mixed into the material heating area, which forces the temperature of the heated material to drop rapidly, resulting in large temperature fluctuations in the material heating area afterwards. Therefore, the type and degree of decomposition reaction occurring in the material will differ depending on the temperature, and the aroma substances released will also be different. This brings the problem of inconsistent quality between the early, middle, and late stages of inhalation, and between the early and late inhalations.

[0005] 2. Due to different inhalation habits, the degree of temperature drop in the material heating area caused by the airflow formed by inhalation is not always the same. This brings about a huge uncertainty in maintaining the consistency of the heater temperature curve, which is still a universal problem in non-combustion and heating products.

[0006] 3. For non-burning and heated tobacco sticks with the current perforated structure design, the airflow formed during the inhalation process can only change the suction resistance and reduce the temperature of the vapor. The low-temperature air cannot maintain the temperature of the heating area without passing through the material heating area, nor can it effectively deliver the aerosol. Summary of the Invention [Problem to be solved by the invention]

[0007] In order to solve the above problems, the present invention is proposed. [Means for solving the problem]

[0008] The present invention provides a non-combustion, heated aerosol-generating product including an outer tube 1. The outer tube 1 includes, from upstream to downstream, an aerosol-generating material section 3 and an air-conducting fixing member 5 having a central airflow path 51 arranged in the axial direction. An air inlet 11 is provided in a side wall of the outer tube 1 surrounding the air-conducting fixing member 5. A gap between the outer wall of the air-conducting fixing member 5 and the inner wall of the outer tube 1 constitutes a peripheral airflow path 52. The peripheral airflow path 52 communicates with the central airflow path 51 at the upstream end face of the air-conducting fixing member 5.

[0009] Preferably, in the non-combustion, heating type aerosol-generating product of the present invention, an isolating fixing member 4 having a central air guide hole 41 and / or a peripheral air guide groove 42 is further provided between the aerosol-generating material section 3 and the air guide fixing member 5.

[0010] When a technical feature is modified with the term "preferred", it means that the technical feature is not essential and may or may not be possessed, but it is optimal for the feature to be possessed.

[0011] The terms upstream and downstream are defined in terms of the direction of aerosol flow. Typically, the aerosol-generating material section is located upstream and the filtration section is located downstream.

[0012] The isolating and fixing member, when present, serves to prevent downstream movement of the aerosol-generating material section and provide a transmission path for the aerosol. When the heating member is inserted into the aerosol-generating material section, the pushing action of the insertion force causes the aerosol-generating material to tend to move downstream, resulting in insufficient thermal contact between the heating member and the aerosol-generating material section. The isolating and fixing member prevents this tendency to move downstream by the adhesive force and / or frictional resistance between its periphery and the inner wall of the outer tube. In addition, when the aerosol-generating material is in granular form, the Isolation and fixing member Of course, if the aerosol-generating material section 3 has an overall shape such as a one-piece round bar and a space for inserting a heating member is provided in advance, or if the aerosol-generating material section 3 is heated from the periphery, there is no downstream pushing force, and the above Isolation and fixing member It is not necessary to use

[0013] Preferably, the lip-distal end of the outer tube 1 has a sealing film 2, and / or the tube wall of the section of the outer tube 1 surrounding the aerosol-generating material section 3 is airtight. The reason for providing such a structure is to prevent outside air from entering the aerosol-generating material section, thereby maintaining an oxygen-deficient and therefore oxygen-blocking atmosphere within the aerosol-generating material section. Therefore, the sealing film 2 is preferably an airtight sealing film. Of course, if a sealing measure can be taken by the aerosol generating device used in combination with the aerosol-generating product, the sealing film 2 may not be provided at the end of the non-combustion-heating aerosol-generating product of the present invention, and the outer tube wall may not be airtight.

[0014] Preferably, the edge of the air-conducting fixing member 5 has at least one, preferably multiple, ventilation grooves extending in the axial direction, and the space between the ventilation groove and the inner wall of the outer tube 1 constitutes the peripheral airflow path 52. More preferably, the multiple ventilation grooves extending in the axial direction are uniformly distributed along the outer peripheral edge of the air-conducting fixing member. In addition, there are no limitations on the cross-sectional shapes of the central airflow path and the peripheral airflow path.

[0015] The aerosol-generating material section 3 contains aerosol-generating material in the form of threads, sheets, granules or whole material. Preferably, the aerosol-generating material is tobacco leaves, for example, but may also be other herbaceous plants.

[0016] Preferably, downstream of the air guide fixing member 5, a filtering section 6 is further provided.

[0017] There are no limitations on the materials of the isolating and fixing members 4 and the air-conducting and fixing members 5, as long as they can withstand high temperatures, for example, not deforming due to softening or releasing harmful substances even at temperatures above 250° C. Preferably, the isolating and fixing members 4 and the air-conducting and fixing members 5 are made independently of silicone or ceramic materials.

[0018] Preferably, the air inlets 11 are annular cuts, arcuate cuts or scattered point cuts through the wall of the outer tube 1 .

[0019] Preferably, the outer tube 1 is formed by rolling a paper material or is preformed as a paper tube.

[0020] The non-combustion, heated aerosol-generating product of the present invention may be heated in the aerosol-generating device in a central heating direction (a heating element is inserted into the aerosol-generating material to heat it) or in a circumferential heating direction (a heater surrounds the outer tube to heat it from the inside to the outside). The heating method may be resistance heating or electromagnetic heating. Thus, the non-combustion, heated aerosol-generating product of the present invention has a wide range of applications and can be used in combination with various smoking accessories.

[0021] When the non-combustion, heating type aerosol-generating product of the present invention is heated using an aerosol-generating device, the aerosol-generating material section receives heat and releases an aerosol. When the user inhales at the lip-proximal end of the outer tube, air from the external environment enters the peripheral airflow path 52 from the air inlet 11 and moves along the peripheral airflow path 52 toward the upstream end of the aerosol-generating product. When the air encounters the aerosol at the upstream end surface of the air-conducting fixing member 5, the aerosol is retained and redirected to enter the central airflow path. After completing the extraction and retention of the aerosol, the aerosol moves downstream along the central airflow path and flows into the user's mouth. Effect of the Invention

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. After the surrounding air enters the tobacco stick, it does not pass through the aerosol-generating material section, but instead redirects the airflow downstream to extract and retain the aerosol released by the aerosol-generating material when heated, and then enters the tobacco stick downstream. Since the surrounding air does not pass through the aerosol-generating material section, the problem of air entering this section causing large temperature fluctuations and inconsistent aroma release can be avoided. Therefore, the aerosol-generating product of the present invention can effectively maintain the temperature constancy in the material heating area, and more vapor can be inhaled. In addition, the product has good durability, good quality of inhalation sensation, and good consistency, which provides the inhaler with a better inhalation experience. In addition, the uncontrollable factors in the heater temperature setting are greatly reduced.

[0024] 2. The inflow of outside air into the aerosol-generating material section is eliminated or greatly reduced, resulting in oxygen deficiency and even oxygen blocking conditions within the section. Under such conditions, the combustion point of the material rises, making it possible to effectively avoid the burning or burning of the aerosol-generating material due to excessive temperature rise, and thus avoiding the occurrence of a burnt or scorched taste. In addition, in order to release the aerosol more fully, and in particular to release aroma molecules that are only released at higher temperatures, it is possible to adopt a higher heating temperature (for example, it is possible to use a heating temperature higher than the general heating temperature of 350°C, or even 400°C or higher) in order to provide a richer aroma experience. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is a schematic structural diagram of a non-combustion and heating type aerosol generating product according to the present invention, which does not have an isolating and fixing member, a sealing film and a filtering section. [Diagram 2] FIG. 2 is a schematic structural diagram of a non-combustion and heating type aerosol generating product according to the present invention, which has an isolating and fixing member, a sealing film and a filtering section. [Diagram 3] FIG. 3 is a schematic diagram of the shape of the isolating and air-conducting fixing members used in the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] The present invention will be described in more detail below in combination with examples.

[0027] In order to make the purpose, structure and function of the present invention better understood, the non-combustion and heating type aerosol generating product of the present invention will be described in more detail below in combination with drawings. EXAMPLES

[0028] As shown in FIG. 1, the non-combustion, heated aerosol-generating product includes:

[0029] Outer tube 1: The outer tube 1 is formed by rolling a paper material. and The first end is also commonly referred to as the upstream end or the lip-distal end, i.e., where the airflow first passes during inhalation. The second end is also commonly referred to as the downstream end or the lip-proximal end, i.e., where the airflow exits during inhalation.

[0030] Aerosol-generating material section 3: agglomerated tobacco sheets or filamentous tobacco leaves with no clumps.

[0031] The air-conducting fixing member 5 has a central airflow path 51 arranged in the axial direction. The cross-sectional shape of the central airflow path 51 is not limited, but it further has a gear shape on the outer periphery. An exemplary shape is shown in FIG. 3. An air inlet 11 is opened on the side wall of the outer tube 1 surrounding the air-conducting fixing member 5. In addition, the gap between each gear tooth on the outer periphery of the air-conducting fixing member 5 and the inner wall of the outer tube 1 forms one peripheral airflow path 52. Each peripheral airflow path 52 extends a certain distance toward the upstream of the aerosol-generating product, and then communicates with the central airflow path 51 at the upstream end face of the air-conducting fixing member 5, forming a U-shaped airflow path or a turned-back airflow path.

[0032] In the present embodiment 1, the non-combustion / heating type aerosol generating product does not have a filtering section at its lip-proximal end. The filtering section may be provided separately at the mouthpiece of the aerosol generating device. In this way, the airflow of the lip-proximal end of the aerosol generating product and the filtering section can be connected to achieve the subsequent filtering action.

[0033] In use, the aerosol-generating material section is heated to release an aerosol. When the user inhales at the lip-proximal end of the outer tube, air from the external environment enters the peripheral airflow path 52 from the air inlet 11 and moves along the peripheral airflow path 52 toward the upstream end of the aerosol-generating product. When the air-conducting fixing member 5 encounters the aerosol at its upstream end, it holds and redirects the aerosol to enter the central airflow path. After completing the extraction and holding of the aerosol, the aerosol moves downstream along the central airflow path and flows into the user's mouth. EXAMPLES

[0034] As shown in Fig. 2, the non-combustion, heating type aerosol generating product includes an outer tube 1. The outer tube 1 includes the following in this order from upstream to downstream.

[0035] Aerosol-generating material section 3: Agglomerated tobacco leaf sheet.

[0036] Separating and fixing member 4: Located immediately downstream of the aerosol-generating material section 3, and has a central air hole and / or peripheral air grooves. An exemplary shape of the separating and fixing member 4 is shown in Figure 3. Note that the cross-sectional shapes of the central air hole 41 and peripheral air grooves 42 are not particularly limited.

[0037] The air guide fixing member 5 has a cross-sectional area smaller than that of the external tube 1. It also has a central airflow path 51 arranged in the axial direction. The cross-sectional shape of the central airflow path is not limited, but it further has a gear shape on the outer periphery. An exemplary shape is shown in FIG. 3. An air inlet 11 is opened on the side wall of the external tube 1 surrounding the air guide fixing member 5. In addition, the gap between each gear tooth on the outer periphery of the air guide fixing member 5 and the inner wall of the external tube 1 forms one peripheral airflow path 52. Each peripheral airflow path 52 extends a certain distance toward the upstream of the aerosol-generating product, and then communicates with the central airflow path 51 at the upstream end face of the air guide fixing member 5 to form a U-shaped airflow path.

[0038] This Example 2 The non-combustion, heating type aerosol generating product has a filtering section 6 at its lip-proximal end and a sealing film 2 at its lip-distal end.

[0039] In use, the aerosol-generating material section is heated to release an aerosol. When the user inhales at the lip-proximal end of the outer tube, air from the external environment enters the peripheral airflow path 52 from the air inlet 11 and moves along the peripheral airflow path 52 toward the upstream end of the aerosol-generating product. When the air-conducting fixing member 5 encounters the aerosol at its upstream end, it holds and redirects the aerosol to enter the central airflow path. After completing the extraction and holding of the aerosol, the aerosol moves downstream along the central airflow path and flows into the user's mouth.

[0040] Unless otherwise defined, those skilled in the art will understand that all terms, including technical and scientific terms, used herein have the same meaning as commonly understood by those skilled in the art. It should be further understood that terms defined in general dictionaries and the like have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined herein. [Explanation of symbols]

[0041] 1 External tube 11 Air inlet 2. Sealing film 3. Aerosol-generating material section 4. Isolation and fixing members 41 Central air hole 42 Marginal air groove 5 Air guide fixing member 51 Central Airflow Path 52 Peripheral airway 6 Filtration Section

Claims

1. A non-combustion, heated aerosol generating product comprising an outer tube (1), In the outer pipe (1), from upstream to downstream, an aerosol-generating material section (3); An air guide fixing member (5) is provided in the outer tube (1) and has a central air flow path (51) provided in the axial direction, An air inlet (11) is opened in the side wall of the external tube (1) surrounding the air-conducting fixing member (5), the gap between the outer wall of the air-conducting fixing member (5) and the inner wall of the external tube (1) forms a peripheral airflow path (52), and the peripheral airflow path (52) is connected to the central airflow path (51) at the upstream end face of the air-conducting fixing member (5).

2. The non-combustion, heating type aerosol generating product according to claim 1, further characterized in that an isolating fixing member (4) having a central air guide hole (41) and / or a peripheral air guide groove (42) is provided between the aerosol generating material section (3) and the air guide fixing member (5).

3. 2. The non-combustion, heated aerosol-generating product according to claim 1, characterized in that the lip-distal end of the outer tube (1) has a sealing film (2) and / or the wall of the section of the outer tube (1) surrounding the aerosol-generating material section (3) is airtight.

4. The non-combustion, heated aerosol generating product of claim 1, characterized in that the peripheral edge of the air-conducting fixing member (5) has at least one ventilation groove extending in the axial direction, and the peripheral airflow path (52) is formed between the ventilation groove and the inner wall of the outer tube (1).

5. 2. The non-combustion, heating type aerosol-generating product according to claim 1, characterized in that the aerosol-generating material section (3) contains aerosol-generating material in the form of a thread, sheet, granules or whole.

6. 2. The non-combustion, heating type aerosol generating product according to claim 1, further comprising a filtering section (6) downstream of the air-conducting fixing member (5).

7. 2. The non-combustion, heating type aerosol generating product according to claim 1, wherein the isolating member (4) and the air-conducting member (5) are independently made of silicone or ceramic material.

8. 2. The non-combustion, heated aerosol generating product according to claim 1, characterized in that the air inlet (11) is an annular cut, an arcuate cut or a scattering point cut penetrating the wall of the outer tube (1).

9. 2. The non-combustion, heated aerosol generating product according to claim 1, characterized in that the outer tube (1) is formed by rolling a paper material or is preformed as a paper tube.

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