Heat-not-burn aerosol generating product

Abstract

The present invention relates to a heat non-combustion type aerosol generating product, which comprises a filtration segment, an air flow passage segment, an aerosol generating material segment and a coating layer. The filtration segment, the air flow passage segment and the aerosol generating material segment are sequentially connected, and the coating layer is installed at least outside the air flow passage segment. At least one central duct is provided at the center of the air flow passage segment, and at least one secondary flow duct is installed between the air flow passage segment and the coating layer. The secondary flow duct is in air flow communication with the central duct. A first through hole is provided on the coating layer, and a second through hole is provided in the air flow passage segment. External gas flows through the first through hole into the second through hole and the secondary flow duct respectively and then enters the central duct. The present invention has a simple structure, extracts the aerosol generated in the aerosol generating material segment by using air, is installed as a double duct including a central duct and a secondary flow duct, and combines central intake and secondary flow intake, thereby stabilizing the aerosol extraction effect, increasing the extraction efficiency, increasing the concentration of the fragrance after extraction, and keeping the aerosol temperature relatively low.

Description

Technical Field

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

Background Art

[0002] A heat-not-burn aerosol generation product generates an aerosol by heating an aerosol generation material without burning it. When such an aerosol generation material is inhaled by an electronic heating device, the consumer can not only feel the aroma of the aerosol generation material, but also, due to the heat-not-burn aerosol generation product being heated under low-temperature conditions, significantly reduce unexpected substances generated during the high-temperature combustion of conventional cigarettes.

[0003] Currently, heat-not-burn aerosol generation products often extract by inhaling from the side to the central duct of the extraction member by an air-based aerosol extraction method. However, when inhaling and extracting from the center, the intake holes and the base material segments are separated by a certain distance, which affects the extraction effect.

Summary of the Invention

Problems to be Solved by the Invention

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

Means for Solving the Problems

[0005] The technical solution used by the present invention to solve this technical problem is to construct a heat-not-burn aerosol generation product, which comprises a filtration segment, an air flow path segment, an aerosol generation material segment, and a coating layer. The filtration segment, the air flow path segment, and the aerosol generation material segment are sequentially connected, and the coating layer is installed at least outside the air flow path segment. At least one central duct is provided at the center of the air flow passage segment, and at least one auxiliary duct is installed between the air flow passage segment and the coating layer, and the auxiliary duct is in air flow communication with the central duct. On the coating layer At least one a first through hole is provided, and in the air flow passage segment At least one is a second through hole corresponding to the first through hole is provided, and the outside Air flows through the first through hole into the second through hole and the auxiliary duct respectively and then enters the central duct.

[0006] Preferably, a corrugated structure is provided in the air flow passage segment, and the outside Air flows through the corrugated structure and merges into the central duct.

[0007] Preferably, the corrugated structure Few includes at least one groove, and at least one of the grooves forms the auxiliary duct.

[0008] Preferably, at least one central hole is provided at the center of the air flow passage segment, and at least one of the central holes penetrates the air flow passage segment to form the central duct.

[0009] Preferably, a filtering member is provided in the central duct.

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

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

[0012] Preferably, the cross-sectional area of the end of the second through hole close to the central duct is smaller than the cross-sectional area of the end of the second through hole close to the coating layer.

[0013] Preferably, the coating layer includes a side wall and a bottom wall, the side wall wraps the sides of the air flow passage segment and the aerosol generating material segment, and the bottom wall wraps the end of the aerosol generating material segment away from the air flow passage segment.

[0014] Preferably, intake holes are provided in the bottom wall of the coating layer, and the intake holes are in air flow communication with the central duct.

Advantages of the Invention

[0015] The implementation of the present invention has the following beneficial effects. The present invention is installed as a double duct including a central duct and a secondary flow duct. By combining central intake and secondary flow intake, the extraction effect of the aerosol is stabilized, the extraction efficiency is increased, and the concentration of the fragrance after extraction is increased. The heat-not-burn aerosol generating product has a simple structure, extracts the aerosol generated in the aerosol generating material segment using air, and the air used for extracting the aerosol does not have to flow through the aerosol generating material segment. The temperature is relatively low, which not only extracts the aerosol but also has a cooling effect. The structure is simple, the material cost is significantly reduced, and at the same time, the processing process is simpler and easier to operate, and the ease of industrialization is higher.

Brief Description of the Drawings

[0016] Hereinafter, the present invention will be further described by way of examples with reference to the drawings. [[Figure 1]] FIG. 1 is a schematic structural diagram of an embodiment of the heat-not-burn aerosol generating product of the present invention. [[Figure 2]] FIG. 2 is a schematic structural diagram of another embodiment of the heat-not-burn aerosol generating product of the present invention. [[Figure 3]] FIG. 3 is a cross-sectional view of an embodiment of the air flow passage segment according to the present invention.

Modes for Carrying Out the Invention

[0017] To more clearly understand the technical features, objectives, and effects of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the drawings. In the following description, it should be understood that the orientation or positional relationship indicated by terms such as "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. is the orientation or positional relationship shown in the drawings. The purpose of configuring and operating in a specific orientation is only to facilitate the description of the present technical solution, and it does not indicate that the indicated device or element must have a specific orientation. Therefore, it should not be understood as limiting the present invention.

[0018] Furthermore, it should be noted that unless otherwise specifically defined and limited, terms such as "mounting", "connecting", "connecting to", "fixing", "installing", etc. should be understood in a broad sense. For example, it may be a fixed connection, a removable connection, or an integral one, and it may be a mechanical connection or an electrical connection. It may also be a direct connection, an indirect connection through an intermediate element, the communication inside two elements, or the interaction relationship between two elements. When an element is said to be located "above" or "below" another element, the element can be located "directly" or "indirectly" above the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for facilitating the description of the present technical solution, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third", etc. can explicitly or implicitly include one or more of such features. A person skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

[0019] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are proposed so that the embodiments of the present invention can be thoroughly understood. However, as will be understood by those skilled in the art, the present invention can also be realized in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present invention.

[0020] Figures 1 to 2 show a heat non-combustion type aerosol generating product according to the present invention. The structure of the heat non-combustion type aerosol generating product may be divided into three segments: a filtration segment 1, an air flow path segment 2, and an aerosol generating material segment 3. The filtration segment 1, the air flow path segment 2, and the aerosol generating material segment 3 are sequentially connected, and a coating layer 4 is installed outside them. That is, the filtration segment 1, the air flow path segment 2, and the aerosol generating material segment 3 after being sequentially connected are wrapped by the coating layer 4. The coating layer 4 shown in Figures 1 and 2 is in its unfolded state. The air flow path segment 2 may also be referred to as an aerosol extraction member and is intended to extract aerosol. It should be noted that it is sufficient that the coating layer 4 wraps at least the air flow path segment 2. In other embodiments, the filtration segment 1, the air flow path segment 2, and the aerosol generating material segment 3 may be wrapped with different packaging materials and then assembled together, and may be selected according to the actual situation, and the present application does not limit this.

[0021] Specifically, the material of the filtration segment 1 includes any one of materials such as acetate fiber, polypropylene fiber, paper filter rod, sheet tobacco, polylactic acid fiber, resin, plant polysaccharide, resin, and plant porous material, and filters and adsorbs aerosol to achieve the effect of improving the purity and comfort of the aerosol. As will be understood, the material of the filtration segment 1 may include a combination of two or more of the above-mentioned materials.

[0022] At least one central duct 21 is provided at the center of the air flow passage segment 2, and further, at least one central duct 21 is installed through the center of the air flow passage segment 2 along the axial direction. At least one auxiliary duct 23 is installed between the air flow passage segment 2 and the coating layer 4, and the auxiliary duct 23 is in air flow communication with the central duct 21 and is on the coating layer 4 At least one a first through hole 41 is provided, and in the air flow passage segment 2 At least one is a second through hole 22 corresponding to the installation position of the first through hole 41 is provided, and the outside Air flows through the first through hole 41 into the second through hole 22 and the auxiliary duct 23 respectively and then enters the central duct 21. The number of the first through holes 41 and the second through holes 22 is not specifically limited and may be adjusted according to the actual situation. As understood, the number of the first through holes 41 is usually equal to the number of the second through holes 22 and both are installed correspondingly. Specifically, the second through hole 22 is installed in the air flow passage segment 2, the second through hole 22 communicates with the central duct 21 to form an intake passage, and the second through hole 22 may be installed at any position of the air flow passage segment 2, and the intake passage communicates with the central duct 21 and the auxiliary duct 23 in the air flow passage segment 2.

[0023] Furthermore, the second through hole 22 may be a tapered through hole. It is understood that the cross-sectional area of the end of the second through hole 22 close to the central duct 21 is smaller than the cross-sectional area of the end of the second through hole 22 close to the coating layer 4, and the inner surface area of the cross-section of the second through hole 22 is smaller than the outer surface area. The inner surface area refers to the cross-sectional area on the side of the second through hole 22 close to the central duct 21, and the outer surface area refers to the cross-sectional area on the side of the second through hole 22 close to the coating layer 4. A differential pressure is generated due to the difference between the inner surface area and the outer surface area, so that a part of the air flow Second through-hole 22 flows from the coating layer 4 through the air flow passage segment 2 and merges into the central duct 21. In another embodiment, the second through hole 22 may be a rectangular through hole. In other embodiments, the second through hole 22 may be other polygonal through holes or circular or elliptical through holes, and the present invention does not limit this.

[0024] During smoking, the lateral air is sucked in from the first through-hole 41, and a part of the air enters downward along the secondary flow duct 23 on the outer wall of the air flow path segment 2. Then, at the confluence point of the bottom of the air flow path segment 2 and the aerosol generating material segment 3, it enters the central duct 21, where a negative pressure is formed to extract the aerosol generated in the aerosol generating material segment 3. However, the remaining air directly enters the central duct 21 of the air flow path segment 2 through the second through-hole 22, flows upward along the central duct 21, and a negative pressure is formed at the upper part of the central duct 21 to extract the aerosol generated in the aerosol generating material segment 3. The aerosol extracted by these two parts flows through the filtration segment 1 and enters the smoker's mouth. The external air flow flows through two types of passages, the central duct 21 and the secondary flow duct 23, to extract the aerosol simultaneously. Compared with the extraction by a single central intake, the extraction by the secondary flow intake is added. In the case of secondary flow extraction, the air flow is closer to the aerosol generating material segment 3, and the extraction rate of the air flow in this part is higher, thereby improving the extraction rate. Also, the extraction by the central intake is maintained, and it is possible to avoid the instability of the suction resistance caused by the partial blockage of the secondary flow intake passage due to the deformation of the aerosol generating product caused by processing or other reasons.

[0025] Furthermore, a corrugated structure is provided in the air flow path segment 2, and the external Air flows through the corrugated structure and converges into the central duct 21. As shown in FIG. 3, which is a cross-sectional view of the air flow path segment 2. Specifically, the corrugated structure includes at least one groove installed axially in the air flow path segment 2, and at least one groove forms the secondary flow duct 23. The corrugated structure is divided into an inner layer and an outer layer, and at least one groove is installed between the inner layer and the outer layer to form the secondary flow duct 23. This embodiment includes several grooves, and the length of each groove is the air flow path segment 2substantially equal to the height thereof, and by installing the plurality of grooves between the inner layer and the outer layer of the corrugated structure, a secondary flow duct 23 is formed. At least one central hole is provided at the center of the air flow passage segment 2, and by at least one central hole penetrating the air flow passage segment 2 in the axial direction, a central duct 21 is formed. The cross-sectional shape of the central duct 21 may be set to any one of shapes such as circular, rectangular, serrated, pentagram-shaped, elliptical, and honeycomb-shaped to extract the aerosol.

[0026] Furthermore, by selectively adding a filtering material to the central duct 21 of the air flow passage segment 2, a filtering member may be formed to filter the aerosol. The material of the filtering member may be acetate fiber, polylactic acid fiber, plant polysaccharide, or plant porous material. The aerosol generated in the aerosol generating material segment 3 flows through the filtering material installed in the central duct 21 for primary filtration, and then the once-filtered aerosol flows through the filtering segment 1 for secondary filtration and may finally enter the smoker's mouth.

[0027] Furthermore, the aerosol generating material segment 3 may also be referred to as a base material segment, and the material of the aerosol generating material segment 3 may include any one or more of solid base materials such as filamentous, sheet-like, granular, powdery, and paste-like.

[0028] Furthermore, the shape of the coating layer 4 may be sheet-like or pipe-like, and the material of the coating layer 4 includes any one or more of paper material, tin foil, and aluminum foil. The coating layer 4 includes a side wall and a bottom wall. The side wall wraps the sides of the filtering segment 1, the air flow passage segment 2, and the aerosol generating material segment 3, and the bottom wall of the coating layer 4 wraps the end portion of the aerosol generating material segment 3 away from the air flow passage segment 2.

[0029] Specifically, the coating layer 4 is in the form of a bendable sheet, formed by winding a paper material, and may be in the form of a sheet when unfolded, and can form a hollow column structure that entirely wraps the filtration segment 1, the air flow passage segment 2, and the aerosol generating material segment 3 when bent. In another embodiment, the coating layer 4 may be in the form of a pipe, i.e., a preformed paper tube, and the pipe-shaped coating layer 4 is entirely sleeved outside the filtration segment 1, the air flow passage segment 2, and the aerosol generating material segment 3.

[0030] Furthermore, the bottom wall of the coating layer 4 may be installed as a sealing structure, whereby the bottom of the heat-not-burn aerosol generating product is sealed and becomes airtight, and air is inhaled only from its side, so that the aerosol generating material is heated in an oxygen-free environment and becomes purer. In another embodiment, intake holes are provided in the bottom wall of the coating layer 4, and the intake holes communicate with the central duct 21 in terms of air flow, so that air is inhaled simultaneously from the bottom and the side of the heat-not-burn aerosol generating product, contributing to an increase in the atomization amount, a reduction in the suction resistance, and a reduction in the temperature entering the mouth during smoking.

[0031] As shown in FIG. 1, in some embodiments, the filtration segment 1 has a length of 8 mm, its material is acetate fiber, its suction resistance is 320 Pa, the length of the air flow passage segment 2 is 25 mm, and one central duct 21 that axially penetrates through the center of the air flow passage segment 2 is provided. The cross-section of the central duct 21 is circular, and its diameter is 4.0 mm. Air flow path segment 2 of the material Is is paper Selectable and the corrugated structure of the secondary flow duct 23 of the air flow passage segment 2 is specifically formed by bending paper into an irregular corrugation and wrapping it around the outer layer of the central duct 21 The depth of the groove formed by the irregular corrugated paper is 0.1 mm to 2.0 mm. The coating layer 4 is made of paper material and wraps the outer layers of the filtration segment 1, the air flow passage segment 2, and the aerosol generating material segment 3. The thickness of the coating layer 4 is 0.1 mm, and intake holes for ventilation with the outside are provided at its bottom, inhaling air simultaneously from the bottom and the side, contributing to an increase in the atomization amount, a reduction in the suction resistance, and a reduction in the temperature entering the mouth. A first through-hole 41 is provided in the coating layer 4, a second through-hole 22 corresponding to the first through-hole 41 is provided in the air flow path segment 2, the position of the second through-hole 22 is 20 mm away from the bottom of the aerosol generating material segment 3, the second through-hole 22 communicates with the central duct 21, the inner cross-section in contact with one side of the central duct 21 of the second through-hole 22 approximates a circle, and the diameter of the inner cross-section is 0.45 mm. The outer cross-section in contact with one side of the coating layer 4 of the second through-hole 22 approximates a circle, and the diameter of the outer cross-section is 0.65 mm. The number of installations of the second through-hole 22 is 4, and they may be evenly arranged at intervals in the circumferential direction, or may be installed at any position in the air flow path segment 2, without specific limitation here. The material of the aerosol generating material segment 3 is tobacco flakes, i.e., sheet tobacco, and the length of the aerosol generating material segment 3 is 12 mm.

[0032] As shown in FIG. 2, in some other embodiments, the length of the filter segment 1 is 10 mm, its material is acetate fiber, its suction resistance is 500 Pa, the length of the air flow path segment 2 is 23 mm, eight grooves are provided on the surface of the air flow path segment 2, the depth of each groove is 0.6 mm, and one central duct 21 axially penetrating through the center of the air flow path segment 2 is provided. The central duct 21 has a rectangular cross-section, specifically a quadrilateral. Air flow path segment 2The material of [it] is silica gel, the coating layer 4 is a paper material, its thickness is 0.15 mm, and the bottom is a sealed structure. The bottom is sealed and ventilation is impossible. Air is inhaled only from the side. The base material in the aerosol generation material segment 3 is heated in an oxygen-free environment and becomes purer. A first through hole 41 is provided on the paper coating layer 4. A second through hole 22 corresponding to the first through hole 41 is provided in the air flow path segment 2. The position of the second through hole 22 is 25 mm away from the bottom of the aerosol generation material segment 3. The second through hole 22 communicates with the central duct 21. The inner cross-section in contact with one side of the central duct 21 of the second through hole 22 approximates a square, and the side length of the inner cross-section is 0.4 mm. The outer cross-section in contact with one side of the coating layer 4 of the second through hole 22 approximates a square, and the diameter of the outer cross-section is 0.6 mm. The number of installed second through holes 22 is 6, and they may be uniformly arranged at intervals in the circumferential direction, or may be installed at any position in the air flow path segment 2, without specific limitation here. The material of the aerosol generation material segment 3 is shredded tobacco, and the length of the aerosol generation material segment 3 is 15 mm.

[0033] The present invention 21 and a double duct including a secondary flow duct 23 is installed. By combining central intake and secondary flow intake, the extraction effect of the aerosol is stabilized, the extraction efficiency is increased, and the concentration of the aroma after extraction is increased. During smoking, air enters through the secondary flow duct 2 formed by the grooves on the surface of the air flow path segment 23 and the central duct 2 formed by the central hole of the air flow path segment 21 and extracts the aerosol generated in the heating aerosol generation material segment 3 . Most of the air directly passes through the aerosol generation material segment 3 without heat exchange, and the aerosol generation material segment 3The influence of the airflow turbulence received by the base material is relatively small. The air entering from the air passage segment can dilute the high-temperature aerosol and play a role in cooling the temperature. The temperature of the aerosol is relatively low, and the temperature of the aerosol reaching the lip end can be maintained below 50°C. Moreover, the aerosol is purer. And the structure of the aerosol generating product is simplified from the general 4-segment type to the 3-segment type. Generally, the typical 4-segment type includes a base material segment, a heat insulation segment, a cooling segment, and a filter segment. The present invention simplifies the above cooling segment, heat insulation segment, and filter segment into one air passage segment 2 and one filtration segment 1, greatly simplifies the structure of the aerosol generating product, and significantly reduces the overall material cost compared with the 4-segment type and 5-segment type. At the same time, the processing process is more concise, easier to operate, and has a higher degree of industrialization.

[0034] As can be understood, the above embodiments illustrate the preferred embodiments of the present invention, and the description is more specific and detailed. However, it should not be understood that the description limits the patent scope of the present invention. It should be pointed out that those skilled in the art can freely combine the above technical features or make some deformations and improvements without departing from the concept of the present invention. All of these belong to the protection scope of the present invention. Therefore, any equivalent substitution and modification made to the scope of the claims of the present invention should belong to the scope of application of the claims of the present invention.

Claims

1. A heat - non - combustible aerosol - generating product, comprising a filtration segment (1), an air flow path segment (2), an aerosol - generating material segment (3), and a coating layer (4), wherein the filtration segment (1), the air flow path segment (2), and the aerosol - generating material segment (3) are sequentially connected, and the coating layer (4) is installed at least outside the air flow path segment (2), at least one central duct (21) is provided at the center of the air flow path segment (2), at least one sub - flow duct (23) is installed between the air flow path segment (2) and the coating layer (4), and the sub - flow duct (23) is in air flow communication with the central duct (21), a first through - hole (41) is provided on the coating layer (4), a second through - hole (22) corresponding to the first through - hole (41) is provided in the air flow path segment (2), and external gas flows through the first through - hole (41) into the second through - hole (22) and the sub - flow duct (23) respectively and then enters the central duct (21). A heat - non - combustible aerosol - generating product is characterized by this.

2. The air flow path segment (2) is provided with a corrugated structure, and the external gas flows through the corrugated structure and merges into the central duct (21). The heat - non - combustible aerosol - generating product according to Claim 1 is characterized by this.

3. The corrugated structure includes at least one groove installed in the air flow path segment (2), and at least one of the grooves forms the sub - flow duct (23). The heat - non - combustible aerosol - generating product according to Claim 2 is characterized by this.

4. At least one central hole is provided at the center of the air flow path segment (2), and at least one of the central holes penetrates the air flow path segment (2) to form the central duct (21). The heat - non - combustible aerosol - generating product according to Claim 1 is characterized by this.

5. A filtration member is provided in the central duct (21). The heat - non - combustible aerosol - generating product according to Claim 1 is characterized by this.

6. The material of the filtration member includes any one of acetate fiber, polypropylene fiber, polylactic acid fiber, plant - based polysaccharide, and plant - based porous material. The heat - non - combustible aerosol - generating product according to Claim 5 is characterized by this.

7. The second through - hole (22) is a tapered through - hole. The heat - non - combustible aerosol - generating product according to Claim 1 is characterized by this. **Claim 8** The heat-not-burn aerosol generating product according to claim 7, wherein a cross-sectional area of an end of the second through-hole (22) close to the central duct is smaller than a cross-sectional area of an end of the second through-hole (22) close to the coating layer (4). **Claim 9** The heat-not-burn aerosol generating product according to claim 1, wherein the coating layer (4) includes a side wall and a bottom wall, the side wall encloses side portions of the air flow path segment (2) and the aerosol generating material segment (3), and the bottom wall encloses an end portion of the aerosol generating material segment (3) away from the air flow path segment (2). **Claim 10** The heat-not-burn aerosol generating product according to claim 9, wherein intake holes are provided in a bottom wall of the coating layer (4), and the intake holes are in air flow communication with the central duct (21).

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