HEAT-NOT-BURN AEROSOL GENERATING ARTICLE

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; first through hole is formed on the wrapping layer, 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

FIELD

[0001] The invention relates to the technical field of aerosol generation, particularly to a heat-not-burn aerosol generating article.

BACKGROUND

[0002] Heat-not-burn aerosol generating articles generate aerosols by heating aerosol generating materials instead of burning them. When the aerosol generating materials are sucked by using electronic heating equipment, consumers can not only feel the fragrance of the aerosol generating materials but also the heat-not-burn aerosol generating articles are heated at low temperature, which can greatly reduce the undesirable substances produced by traditional cigarettes when they are burned at high temperature.

[0003] At present, heat-not-burn aerosol generating articles are mostly extracted by air from the side air inlet to the central air channel of the extraction part, but extracted by the central air inlet, there is a certain distance between the air inlet hole and the base material section, which affects the extraction effect.

SUMMARY

[0004] The technical problem to be solved by the invention is to provide a heat-not-burn aerosol generating article with high aerosol extraction efficiency in response to the defects of the prior art.

[0005] The technical scheme adopted by the invention for solving the technical problems is as follows: provide a heat-not-burn aerosol generating article, comprising a filtering section, an airflow channel section, an aerosol generating material section, and a wrapping layer, wherein 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 inner of the airflow channel section, and 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;

first through hole is formed on the wrapping layer, second through hole corresponding to the first through hole is formed on the airflow channel section, and one part of the external gas passes through the first through hole and then passes through the second through hole to enter the central air channel, and the other part of the external gas passes through the first through hole and then passes through the side air channel to enter the central air channel.

[0006] Preferably, the airflow channel section is provided with a corrugated structure, and external gas flows into the central air channel through the corrugated structure.

[0007] Preferably, the corrugated structure comprises at least one groove arranged on the airflow channel section, and at least one groove forms the side air channel.

[0008] Preferably, at least one central hole is arranged in the inner of the airflow channel section, and at least one central hole penetrates through the airflow channel section to form the central air channel.

[0009] Preferably, a filter is arranged in the central air channel.

[0010] Preferably, the filter material comprises any one of acetate fiber, polypropylene fiber, polylactic acid fiber, plant polysaccharide, and plant porous material.

[0011] Preferably, the second through hole is a conical through hole.

[0012] Preferably, the cross-sectional area of one end of the second through hole near the central air channel is smaller than the cross-sectional area of one end of the second through hole near the wrapping layer.

[0013] Preferably, the wrapping layer comprises a side wall and a bottom wall, wherein the side wall wraps the sides of the airflow channel section and the aerosol generating material section, and the bottom wall wraps the end of the aerosol generating material section far from the airflow channel section.

[0014] Preferably, the bottom wall of the wrapping layer is provided with an air inlet, and the air inlet is in airflow communication with the central air channel.

[0015] The implementation of the invention has the following beneficial effects: the invention is provided with two air channels including a central air channel and a side air channel, and the central air inlet is matched with the side air inlet so that the aerosol extraction effect is stable, the extraction efficiency is high, the aroma concentration after extraction is high. The heat-not-burn aerosol generating article has a simple structure, an aerosol generated by the aerosol generating material section is extracted by utilizing air, and the air used for extracting the aerosol does not need to pass through the aerosol generating material section, so that the temperature is low, and the aerosol can be extracted while cooling; the structure is simple, and the material cost is obviously reduced; at the same time, the processing technology is more concise, the operation is more convenient, and the degree of industrialization is higher.

BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The invention will be further described with reference to the attached drawings and examples, in which:

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

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

Figure 3 is a cross-sectional view of an airflow channel section of the present invention.

DETAILED DESCRIPTION

[0017] To have a clearer understanding of the technical features, purposes, and effects of the present invention, specific embodiments of the present invention are described in detail against the accompanying drawings. In the following description, it is to be understood that "front", "back", "upper", "lower", "left", 'right', 'longitudinal', 'transverse', "vertical ", "horizontal", "top", "bottom", "inside", "outside", 'head', 'tail', etc. indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the accompanying drawings, constructing and operating in a particular orientation, are intended only to facilitate description of the this technical solution, and is not intended to indicate that the device or element referred to must have a particular orientation, and therefore is not to be construed as a limitation of the present invention.

[0018] It should also be noted that unless otherwise specified and limited, terms such as "installation", "connection", "joint", "fixing" and "setting" should be understood broadly, for example, they can be fixed connection, detachable connection or integrated; it can be a mechanical connection or an electrical connection; can be directly connected, can also be indirectly connected through an intermediary, can be the internal connection of two elements or the interaction between two elements. When an element is said to be "above" or "below" another element, the element can be "directly" or "indirectly" above the other element, or there may be one or more intervening elements. The terms "first", "second" and "third" are only for the convenience of describing the technical scheme, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, features defined as "first", "second" and "third" can explicitly or implicitly include one or more such features. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to particular situations.

[0019] In the following description, specific details, such as specific system structure and technology, are set forth for explanation rather than limitation, to thoroughly understand the embodiments of the present invention. However, it will be apparent to one skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary details.

[0020] Referring to Figure 1 to Figure 2, the present invention provides a heat-not-burn aerosol generating article. The structure of the heat-not-burn aerosol generating article can be divided into three sections, including a filtering section 1, an airflow channel section 2, and an aerosol generating material section 3, wherein, the filtering section 1, the airflow channel section 2, and the aerosol generating material section 3 are sequentially connected, and a wrapping layer 4 is arranged outside the three sections, that is, the sequentially connected filtering section 1, the airflow channel section 2, and the aerosol generating material section 3 are wrapped by the 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 aerosol extraction part to extract aerosol, and its purpose is to extract the aerosol generated by heating the aerosol-generating material section 3. It should be noted that the wrapping layer 4 at least needs to wrap the airflow channel section 2. In other embodiments, the filtering section 1, airflow channel section 2, and aerosol generating material section 3 can be wrapped by different packaging materials and then assembled into a whole, and can be selected according to the actual situation, and this application is not limited to this.

[0021] Specifically, the material of the filtering section 1 includes any one of acetate fiber, polypropylene fiber, paper filter rod, reconstituted tobacco, polylactic acid fiber, resin, plant polysaccharide, resin, and plant porous material, etc., and filters and adsorbs the aerosol to achieve the effect of improving the purity and comfort of the aerosol. Understandably, the material of the filtering section 1 can also include two or more of the above materials.

[0022] At least one central air channel 21 is arranged at the inner of the airflow channel section 2, and further, at least one central air channel 21 is arranged at the inner of the airflow channel section 2 along an axial direction. At least one side air channel 23 is arranged between the airflow channel section 2 and the wrapping layer 4, and the side air channel 23 is in air communication with the central air channel 21; first through hole 41 is formed on the wrapping layer 4, second through hole 22 corresponding to the first through hole 41 is formed on the airflow channel section 2, and external gas passes through the first through hole 41 and then passes through the second through hole 22 and the side air channel 23 respectively to enter the central air channel 21. 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. Understandably, the number of the first through holes 41 and the number of the second through holes are generally equal, and they are correspondingly arranged. Specifically, the second through hole 22 is arranged on the airflow channel section 2, and the second through hole 22 communicates with the central air channel 21 to form an air inlet channel, and the second through hole 22 can be arranged at any position of the airflow channel section 2, and the air inlet channel communicates with the central air channel 21 and the side air channel 23 on the airflow channel section 2.

[0023] Further, the second through hole 22 may be a conical through hole. The cross-sectional area of one end of the second through hole 22 near the central air channel 21 is smaller than the cross-sectional area of one end of the second through hole 22 near the wrapping layer 4. It can also be understood that the internal surface area of the cross-sectional of the second through hole 22 is smaller than its external surface area, wherein the internal surface area refers to the cross-sectional area of one side of the second through hole 22 near the central air channel 21 and the external surface area refers to the cross-sectional area of one side of the second through hole 22 near the wrapping layer 4. The difference between the internal surface area and the external surface area generates a pressure difference, so that part of the airflow flows through the airflow channel section 2 from the side air channel 23 and then flows into the central airflow channel 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 or circular or elliptical through holes, and the present invention is not limited to this.

[0024] During suction, side air is sucked in from the first through hole 41, and a part of the air enters downward along the side air channel 23 on the outer wall of the airflow channel section 2 and then enters the central air channel 21 at the intersection of the bottom of the airflow channel section 2 and the aerosol generating material section 3, where negative pressure is formed to extract the aerosol generated by the aerosol generating material section 3; the other part of the air will directly enter the central air channel 21 of the airflow channel section 2 through the second through hole 22, and flow upward along the central air channel 21, and a negative pressure forming at the upper part of the central air channel 21 to extract the aerosol generated by the aerosol generating material section 3, and the aerosol extracted by these two parts will enter the mouth of the smoker through the filtering section 1. The external airflow simultaneously extracts aerosol through the two types of channels, that is, central and side channels, which increases the extraction of side inflow air compared with the single central intake air extraction. During the side flow extraction, the airflow is closer to the aerosol generating material section 3, and the extraction rate of this part of the airflow is higher, thus increasing the extraction rate; in addition, retaining the central intake air extraction can avoid the instability of suction resistance due to the partial blockage caused by the deformation of aerosol generating articles caused by processing or other reasons.

[0025] Further, the airflow channel section 2 is provided with a corrugated structure, and the external gas flows into the central air channel 21 through the corrugated structure. As shown in figure 3, which is a cross-sectional view of the airflow channel section 2; specifically, the corrugated structure comprises at least one groove axially arranged on the airflow channel section 2, and at least one groove forms the side air channel 23; the corrugated structure is divided into an inner layer and an outer layer, and at least one groove is arranged between the inner layer and the outer layer to form the side air channel 23; this embodiment includes a plurality of grooves, and the length of each groove is approximately equal to the height of the airflow channel section, and the grooves are arranged between the inner layer and the outer layer of the corrugated structure to form a side air channel 23; at least one central hole is arranged in the inner of the airflow channel section 2, and at least one central hole axially penetrates through the airflow channel section 2 to form a central air channel 21, and the cross-sectional shape of the central air channel 21 can be set to any one of circular, rectangular, zigzag, pentagonal, elliptical, honeycomb and other shapes to extract aerosol.

[0026] Further, a filter material can be optionally added to the central air channel 21 of the airflow channel section 2 to form a filter to filter the aerosol; the material of the filter can be acetate fiber, polylactic acid fiber, plant polysaccharide or plant porous material. The aerosol generated by the aerosol generating material section 3 can be primarily filtered by the filter material arranged in the central air channel 2. Then the aerosol after preliminary filtering is secondarily filtered by the filtering section 1 and finally enters the mouth of the smoker.

[0027] Further, 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 or more solid base materials such as wire, flake, granules, powder, and paste.

[0028] Further, the shape of the wrapping layer 4 can be sheet-like or tubular, and the material of the wrapping layer 4 includes any one or more of paper, tin foil, and aluminum foil. The wrapping layer 4 comprises a side wall and a bottom wall, wherein the side wall wraps the sides of the filtering section 1, the airflow channel section 2, and the aerosol generating material section 3, and the bottom wall of the wrapping layer 4 wraps the end of the aerosol generating material section 3 far away from the airflow channel section 2.

[0029] Specifically, the wrapping layer 4 is a flexible sheet, which can be formed by winding paper, which can be paper-shaped when it is unfolded, which can form a hollow column structure that can integrally wrap the filtering section 1, the airflow channel section 2, and the aerosol generating material section 3 when it is bent. In another embodiment, the wrapping layer 4 can be tubular, that is, a preformed paper tube, and the tubular wrapping layer 4 is integrally sleeved outside of the filtering section 1, the airflow channel section 2, and the aerosol generating material section 3.

[0030] Further, the bottom wall of the wrapping layer 4 can be set as a sealed structure, so that the bottom of the heat-not-burn aerosol generating article is sealed and airtight, and only the side of the heat-not-burn aerosol generating article is ventilated, and the aerosol generating material is heated in an oxygen-free environment, which is purer. In another embodiment, the bottom wall of the wrapping layer 4 is provided with an air inlet, which is in airflow communication with the central air channel 21, so that the bottom and the side of the heat-not-burn aerosol generating article can be air-fed at the same time, which is helpful to increase the atomization amount and reduce the suction resistance and the inlet temperature during smoking.

[0031] As shown in Figure 1, in some embodiments, the length of the filtering section 1 is 8mm, its material is acetate fiber, and its suction resistance is 320Pa; the length of the airflow channel section 2 is 25mm, and the inner of the airflow channel section 2 is provided with a central air channel 21 running through axially. The section of the central air channel 21 is circular with a diameter of 4.0mm, and its material can be paper. The corrugated structure of the side air channel 23 of the airflow channel section 2 is specifically composed of paper bent into an irregular corrugated shape and wrapped around the outer layer of the central air channel, and the depth of the groove formed by the irregular corrugated paper is 0.1 mm-2.0 mm; the wrapping layer 4 is made of paper, which wraps the outer layers of the filtering section 1, the airflow channel section 2 and, the aerosol generating material section 3. The thickness of the wrapping layer 4 is 0.1mm, and the bottom of the wrapping layer 4 is provided with an air inlet, which is ventilated with the outside, and the bottom and the side are simultaneously air-fed, which is helpful to increase the atomization amount and reduce the suction resistance and the inlet temperature.

[0032] The wrapping layer 4 is provided with a first through hole 41. The airflow channel section 2 is provided with a second through hole 22 corresponding to the first through hole 41, and the position of the second through hole 22, which is away from the bottom of the aerosol generating material section 3 is 20mm; the second through hole 22 communicates with the central air channel 21, and the inner cross section of the second through hole 22 contacting one side of the central air channel 21 is approximately circular, and the diameter of the inner cross section is 0.45mm; the outer cross section of the second through hole 22 contacting one side of the wrapping layer 4 is approximately circular, and the diameter of the outer cross section is 0.65mm; the number of the second through holes 22 is four, which can be evenly distributed at circumferential intervals or can be arranged at any position on the airflow channel section 2, so there is no specific limitation here. The material of aerosol generating material section 3 is tobacco flakes, that is, reconstituted tobacco leaves, and the length of aerosol generating material section 3 is 12 mm.

[0033] As shown in Figure 2, in other embodiments, the length of the filtering section 1 is 10mm, which its material is acetate fiber and its suction resistance is 500Pa; the length of the airflow channel section 2 is 23mm, and the surface of the airflow channel section 2 is provided with eight grooves, each of grooves with a depth of 0.6mm; the inner of the airflow channel section 2 is provided with a central air channel 21 running through axially, and the section of the central air channel 21 is rectangular, specifically square, and its material is silica gel; the wrapping layer 4 is made of paper, its thickness is 0.15mm, and the bottom is sealed structure. The bottom is sealed and airtight, and only the side air is introduced. The base material in the aerosol generating material section 3 is heated in an oxygen-free environment, which is more pure. The paper 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 away from the bottom of the aerosol generating material section 3 is 25mm; the second through hole 22 communicates with the central air channel 21, and the inner cross section of the second through hole 22 contacting with one side of the central air channel 21 is approximately square, and the side length of the inner cross section is 0.4mm; the outer cross section of the second through hole 22 contacting one side of the wrapping layer 4 is approximately square, and the diameter of the outer cross section is 0.6mm; the number of the second through holes 22 is six, which can be evenly distributed at circumferential intervals, or which can be arranged at any position on the airflow channel section 2, so there is no specific limitation here. The material of the aerosol generating material section 3 is cut tobacco, and the length of the aerosol generating material section 3 is 15 mm.

[0034] The invention is provided with two air channels including a central air channel and a side air channel, and the central air inlet is matched with the side air inlet 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 both the side air channel formed by the groove on the surface of the airflow channel section and the central air channel formed by the central hole of the airflow channel section to extract the aerosol generated by heating the aerosol generating material section, most of the air does not directly pass through the aerosol generating material section for heat exchange, the base material of the aerosol generating material section is less affected by the airflow disturbance, and the air entering from the airflow channel section can dilute the high-temperature aerosol to produce a cooling effect so that the aerosol temperature is lower. The temperature of the aerosol reaching the lip can be kept below 50°C, and the aerosol is relatively pure; moreover, the structure of the aerosol generating article is simplified into a three-stage structure based on a general four-stage structure, and the general classic four-stage structure comprises a base material section, a heat insulation section, a cooling section, and a filtering section; and the cooling section, the heat insulation section, and the filtering section are simplified into an airflow channel section 2 and a filtering section 1 in present invention, so that the structure of the aerosol generating article is greatly simplified; moreover, the whole material cost is obviously lower than that of four-stage and five-stage models; at the same time, the processing technology is more concise, the operation is more convenient, and the degree of simplicity of industrialization is higher.

[0035] It can be understood that the above embodiment only expresses the preferred embodiment of the present invention, and its description is more specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several modifications and improvements can be made, which are all within the scope of protection of the present invention. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present invention should belong to the scope of the claims of the present invention.

Claims

1. A heat-not-burn aerosol generating article, comprising a filtering section (1), an airflow channel section (2), an aerosol generating material section (3) and a wrapping layer (4), wherein the filtering section (1), the airflow channel section (2) and the aerosol generating material section (3) are sequentially connected, and the wrapping layer (4) is at least arranged outside the airflow channel section (2);

at least one central air channel (21) is arranged at the inner of the airflow channel section (2), and at least one side air channel (23) is arranged between the airflow channel section (2) and the wrapping layer (4), and the side air channel (23) is in airflow communication with the central air channel (21);

first through hole (41) is formed on the wrapping layer (4), second through hole (22) corresponding to the first through hole (41) is formed on the airflow channel section (2), and one part of the external gas passes through the first through hole (41) and then passes through the second through hole (22) to enter the central air channel(21), and the other part of the external gas passes through the first through hole (41) and then passes through the side air channel (23) to enter the central air channel(21).

2. The heat-not-burn aerosol generating article according to claim 1, wherein the airflow channel section (2) is provided with a corrugated structure, and external gas flows into the central air channel (21) through the corrugated structure.

3. The heat-not-burn aerosol generating article according to claim 2, wherein the corrugated structure comprises at least one groove arranged on the airflow channel section (2), and at least one groove forms the side air channel (23).

4. The heat-not-burn aerosol generating article according to claim 1, wherein at least one central hole is arranged in the inner of the airflow channel section (2), and at least one central hole penetrates through the airflow channel section (2) to form the central air channel (21).

5. The heat-not-burn aerosol generating article according to claim 1, wherein a filter is arranged in the central air channel (21).

6. The heat-not-burn aerosol generating article according to claim 5, wherein the material of the filter comprises any one of acetate fiber, polypropylene fiber, polylactic acid fiber, plant polysaccharide, and plant porous material.

7. The heat-not-burn aerosol generating article according to claim 1, wherein the second through hole (22) is a conical through hole.

8. The heat-not-burn aerosol generating article according to claim 7, wherein the cross-sectional area of one end of the second through hole (22) near the central air channel is smaller than the cross-sectional area of one end of the second through hole (22) near the wrapping layer (4).

9. The heat-not-burn aerosol generating article according to claim 1, wherein the wrapping layer (4) comprises a side wall and a bottom wall, wherein the side wall wraps the sides of the airflow channel section (2) and the aerosol generating material section (3), and the bottom wall wraps the end of the aerosol generating material section (3) far away from the airflow channel section (2).

10. The heat-not-burn aerosol generating article according to claim 9, wherein the bottom wall of the wrapping layer (4) is provided with an air inlet, and the air inlet is in airflow communication with the central air channel (21).

Drawing