Aerosol generating substrate, aerosol generating device and aerosol generating system

Abstract

The invention provides an aerosol generating substrate, an aerosol generating device and an aerosol generating system. The aerosol generating substrate comprises an aerosol generating substrate and an electromagnetic induction heating device, and the aerosol generating substrate wraps the outer side of the electromagnetic induction heating device; the electromagnetic induction heating device is of a hollow tubular structure. The aerosol generating base body comprises the aerosol generating base body and the electromagnetic induction heating device wrapped in the aerosol generating base body, and therefore the heating cigarette comprising the aerosol generating base body can be matched with an electromagnetic induction heating smoking set. And meanwhile, the tubular hollow area of the electromagnetic induction heating device can accommodate a sheet-type or needle-type heating body, so that the electromagnetic induction heating device can be suitable for the resistance heating smoking set. Besides, the tubular electromagnetic heating device increases the contact area of the tubular electromagnetic heating device and the aerosol generating substrate, the atomization release performance of the aerosol generating substrate can be improved, and therefore the use experience of consumers can be improved.

Description

Technical Field

[0001] The present application relates to the field of aerosol technology, and in particular to an aerosol generating substrate, an aerosol generating device and an aerosol generating system. Background Art

[0002] Heated cigarettes are a new type of tobacco product. The heating temperature only needs to be 200℃~400℃, which is significantly lower than the combustion temperature of traditional cigarettes of 600℃~900℃. The harmful components produced by high-temperature combustion of tobacco are greatly reduced. Therefore, it has developed rapidly in recent years.

[0003] The heating methods of heated cigarettes include peripheral heating and central heating. Central heating includes resistance heating and electromagnetic induction heating. Resistance heating is to install a needle-type or sheet-type heating needle in the heated cigarette smoking device. When in use, the heating needle is inserted into the center of the heated cigarette aerosol generating matrix section, and heating is performed by controlling the current; electromagnetic heating is to set an electromagnetic induction heating sheet in the center of the heated cigarette aerosol generating matrix section. When in use, the current of the induction coil in the heated smoking device is controlled, and an alternating magnetic field is generated around the coil. The electromagnetic induction heating sheet in the cigarette generates eddy currents and heats up under the action of the magnetic field.

[0004] In traditional technology, cigarettes and smoking utensils adapted for electromagnetic induction heating and resistance heating are not interchangeable, so further improvements are necessary. Summary of the invention

[0005] Based on this, one or more embodiments of the present application provide an aerosol generating substrate, an aerosol generating device and an aerosol generating system; the heated cigarette containing the above-mentioned aerosol generating substrate can be suitable for both electromagnetic induction heating smoking articles and resistance heating smoking articles.

[0006] According to a first aspect of an embodiment of the present application, an aerosol generating substrate is provided, comprising an aerosol generating substrate and an electromagnetic induction heating device, wherein the aerosol generating substrate is wrapped around the outside of the electromagnetic induction heating device; the electromagnetic induction heating device is a hollow tubular structure.

[0007] In some of the embodiments, a hollow hole is provided on the side wall of the electromagnetic induction heating device.

[0008] In some embodiments, the hollow hole is in a shape of circle, oval, diamond, square or rectangle.

[0009] In some of the embodiments, based on the total area of ​​the side walls of the electromagnetic induction heating device, the total area of ​​the hollow holes accounts for 1 / 3 to 2 / 3.

[0010] In some of the embodiments, the cross-sectional shape of the inner cavity of the electromagnetic induction heating device is circular, elliptical, polygonal or irregular.

[0011] In some embodiments, the cross-sectional shape of the inner cavity of the electromagnetic induction heating device is circular, and the cross-sectional diameter of the electromagnetic induction heating device is 1.5 mm to 2.5 mm.

[0012] In some of the embodiments, the cross-sectional shape of the inner cavity of the electromagnetic induction heating device is elliptical, and the ratio of the major axis length to the minor axis length of the cross-sectional shape of the inner cavity of the electromagnetic induction heating device is (1.2~2.5):1.

[0013] In some embodiments, the major axis length is 1.5 mm to 3 mm, and the minor axis length is 0.8 mm to 1.5 mm.

[0014] In some of the embodiments, the length of the aerosol generating substrate is 10 mm to 35 mm.

[0015] In some of the embodiments, the ratio of the length of the aerosol generating substrate to the length of the electromagnetic induction heating device is 1:(0.8~1).

[0016] In some of the embodiments, the aerosol generating substrate comprises one or more of shredded tobacco, shredded tobacco stems, reconstituted tobacco leaves and tobacco particles.

[0017] According to the second aspect of an embodiment of the present application, an aerosol generating device is provided, comprising a wrapping layer, a filter body, a hollow device and the above-mentioned aerosol generating substrate; the wrapping layer is wrapped around the outer sides of the filter body, the hollow device and the aerosol generating substrate which are arranged in sequence.

[0018] In some of the embodiments, a diffusion device is further included, wherein the diffusion device is arranged between the hollow device and the aerosol generating substrate.

[0019] In some embodiments, the length of the diffusion device is 5 mm to 10 mm.

[0020] In some of these embodiments, the diffusing element includes acetate tow.

[0021] In some of the embodiments, the single denier of the acetate fiber tow is 6Y~10Y, the total denier is 20000D~30000D, and the pressure drop is 5Pa / mm~15Pa / mm.

[0022] In some embodiments, the diffusion device includes an outer cladding and an inner core layer, the pressure drop of the acetate fiber bundle of the inner core layer is greater than the pressure drop of the acetate fiber bundle of the outer cladding, and the end surface of the inner core layer completely covers the inner cavity end surface of the electromagnetic induction heating device.

[0023] In some embodiments, the diffusion device includes a sealing component, a connecting component and a shell, the sealing component is placed in the inner cavity of the shell, the sealing component is connected to the shell through the connecting component and a cavity is formed between the sealing component and the shell; the end face of the sealing component completely covers the inner cavity end face of the electromagnetic induction heating device.

[0024] In some embodiments, one end of the electromagnetic induction heating device close to the hollow device is a closed end.

[0025] According to a third aspect of the embodiments of the present application, there is provided an aerosol generating system, comprising the above-mentioned aerosol generating device and a heating device;

[0026] The heating device is used to heat the aerosol generating substrate or the aerosol generating device.

[0027] In some embodiments, the heating device includes a heating component, a battery component, a control component and a shell, the battery component is used to supply power to the heating device, the control component is used to control the magnitude of the current in the battery component, and the heating component, the battery component and the control component are housed in the shell.

[0028] Compared with the traditional technology, this application has the following beneficial effects:

[0029] The aerosol generating substrate of the present application includes an aerosol generating substrate and a hollow tubular electromagnetic induction heating device wrapped in the aerosol generating substrate. The heated cigarette containing the above-mentioned aerosol generating substrate can be adapted to electromagnetic induction heating smoking utensils; at the same time, the tubular hollow area of ​​the electromagnetic induction heating device can accommodate a sheet-type or needle-type heating body, so that it can be applied to resistance heating smoking utensils. In addition, the tubular electromagnetic heating device increases its contact area with the aerosol generating substrate, which can improve the atomization release performance of the aerosol generating substrate, thereby improving the consumer's use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a schematic diagram of the structure of an aerosol generating substrate in one embodiment of the present application. Figure 1 A is a cross-sectional schematic diagram of an aerosol generating substrate. Figure 1 B is a schematic diagram of the three-dimensional structure of the aerosol generating matrix;

[0032] Figure 2 This is a schematic diagram of an expanded electromagnetic induction heating device in one embodiment of the present application;

[0033] Figure 3 This is a schematic structural diagram of an aerosol generating device in one embodiment of the present application;

[0034] Figure 4 Schematic diagram of the structure of an aerosol generating device in one embodiment of the present application.

[0035] Figure 5 is a cross-sectional view of a diffusion device in one embodiment of the present application;

[0036] Figure 6 It is a cross-sectional view of a diffusion device in one embodiment of the present application.

[0037] Explanation of the reference numerals: 100, aerosol generating substrate; 110, electromagnetic induction heating device; 111, side wall; 112, hollow hole; 120, aerosol generating substrate; 200, hollow device; 300, filter body; 400, wrapping layer; 500, diffusion device; 510, inner core layer; 520, outer covering layer; 530, sealing component; 540, connecting component; 550, shell. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. Unless otherwise specifically stated, various raw materials, reagents, instruments and equipment used in the present application, etc. can be purchased from the market or can be prepared by existing methods.

[0040] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of the present application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; 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 the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementations.

[0046] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0048] In traditional technology, heated cigarettes adapted to resistance heating devices do not have electromagnetic induction heating sheets inside, so electromagnetic induction heating devices cannot generate eddy currents and heat inside the cigarettes; while heated cigarettes adapted to electromagnetic induction heating have electromagnetic induction heating sheets inside, which will hinder the insertion of the heating needles in the heating devices, so electromagnetic induction heating cigarettes and resistance heating devices cannot be adapted. Since cigarettes and smoking devices using electromagnetic induction heating and resistance heating methods cannot be used interchangeably, it brings a lot of trouble to consumers and affects the consumer experience.

[0049] Based on this, the present application creatively proposes a new type of heated cigarette structure.

[0050] See also Figure 1 In a first aspect, the present application provides an aerosol generating substrate 100, which includes an aerosol generating substrate 120 and an electromagnetic induction heating device 110. The aerosol generating substrate 120 is wrapped around the outside of the electromagnetic induction heating device 110; the electromagnetic induction heating device 110 is a hollow tubular structure.

[0051] It should be noted that Figure 1 A is a schematic diagram of the cross-sectional structure of the aerosol generating substrate 100; Figure 1 B is a schematic diagram of the three-dimensional structure of the aerosol generating substrate 100.

[0052] The aerosol base of the present application includes a hollow tubular electromagnetic induction heating device 110, and the heated cigarette including the above-mentioned aerosol generating substrate 100 can be adapted to electromagnetic induction heating smoking articles; at the same time, the hollow cavity of the electromagnetic induction heating device 110 can accommodate a sheet-type or needle-type heating body, so that it can be applied to resistance heating smoking articles. In addition, the tubular electromagnetic heating device increases its contact area with the aerosol generating substrate 120, which can improve the atomization release performance of the aerosol generating substrate 120, thereby improving the use experience of consumers.

[0053] In addition, compared with traditional electromagnetic induction heating sheets, the hollow tubular electromagnetic induction heating device 110 of the present application is completely fitted with the aerosol generating matrix 120, increasing the contact area with the aerosol generating matrix 120, thereby improving the heating efficiency and the atomization effect of the aerosol generating matrix 120; and can achieve a better aerosol release effect under relatively low heating temperature conditions.

[0054] When a central heating needle or a central heating plate is used to heat a heated cigarette containing the above-mentioned aerosol generating matrix 100, the electromagnetic induction heating device 110 prevents the heating needle and the heating plate from directly contacting the aerosol generating matrix 120, thereby reducing adhesion, thereby improving the service life of the heating device and the consumer's smoking experience.

[0055] In some of the implementation methods, a hollow hole 112 is provided on the side wall 111 of the electromagnetic induction heating device 110. The hollow hole 112 on the side wall 111 of the electromagnetic induction heating device 110 can change the path of the aerosol generation matrix 120 to release the aerosol by atomization. Specifically, the aerosol evaporates and diffuses from the tobacco sheet to the surrounding area. If the surrounding area is full of tobacco sheets, it is easy to reach a balance of desorption and adsorption, resulting in a decrease in the actual evaporation amount; but when diffusing to the hollow cavity of the electromagnetic induction heating device through the hollow hole, it does not contact the tobacco sheet, so it will reduce the adsorption of the evaporated aerosol, thereby increasing the total release of the aerosol, thereby improving the consumer experience.

[0056] In some embodiments, the number of the hollow holes 112 is at least one, for example, 1 to 100, or may be within a range consisting of any two integers between 1 and 100.

[0057] In some embodiments, the shape of the hollow holes 112 is circular, oval, diamond, square or rectangular. In some embodiments, the hollow holes 112 can be regularly arranged on the side wall 111, or randomly distributed on the side wall 111. It is understandable that the shape of the hollow holes 112 can also be other polygonal or irregular shapes.

[0058] like Figure 2 As shown, Figure 2A in the middle is a plurality of circular hollow holes 112 regularly arranged on the side wall 111; Figure 2 In the middle, B is a plurality of square hollow holes 112 regularly arranged on the side wall 111; Figure 2 In the middle, C is a plurality of rectangular hollow holes 112 regularly arranged on the side wall 111; Figure 2 D in the middle is a plurality of diamond-shaped hollow holes 112 regularly arranged on the side wall 111; Figure 2 In the middle, E is a plurality of elliptical hollow holes 112 regularly arranged on the side wall 111 .

[0059] In some embodiments, the total area of ​​the hollow holes accounts for 1 / 3 to 2 / 3 of the total area of ​​the sidewall 111 of the electromagnetic induction heating device 110. As an example, the total area of ​​the hollow holes may account for 1 / 3, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 2 / 3, or a range between any two of the above values.

[0060] It can be understood that the total area of ​​the side wall 111 of the electromagnetic induction heating device 110 refers to the area of ​​the electromagnetic induction heating device 110 without hollow holes.

[0061] In some embodiments, the side wall 111 of the electromagnetic induction heating device 110 is completely in contact with the inner wall of the aerosol generating substrate 120. In this way, the heat generated by the electromagnetic induction heating device 110 can be transferred to the aerosol generating substrate 120 more quickly and heat it, so that it is heated and atomized.

[0062] In some embodiments, the cross-sectional shape of the inner cavity of the electromagnetic induction heating device 110 is circular, elliptical, polygonal or irregular. Further, the polygon includes but is not limited to a triangle, a quadrilateral, a pentagon or a hexagon, etc. The quadrilateral includes but is not limited to a square, a rectangle, a trapezoid, a parallelogram, etc.

[0063] It can be understood that the cross-sectional shape of the inner cavity of the electromagnetic induction heating device 110 refers to the plane graphic shape of the inner cavity obtained by cutting perpendicularly to the axial direction of the tube.

[0064] In some embodiments, the cross-sectional shape of the inner cavity of the electromagnetic induction heating device 110 is circular, and the cross-sectional diameter of the electromagnetic induction heating device 110 is 1.5 mm to 2.5 mm.

[0065] In some embodiments, the diameter of the aerosol generating substrate 100 is 5 mm to 9 mm.

[0066] In some embodiments, the cross-sectional shape of the inner cavity of the electromagnetic induction heating device 110 is an ellipse, and the ratio of the major axis length to the minor axis length of the inner cavity cross-sectional area is (2-2.5): 1. As an example, the ratio of the major axis length to the minor axis length can be 2:1, 2.1:1, 2.2:1, 2.3:1, 2.4:1, 2.5:1, or within the range formed by any two of the above point values.

[0067] In some embodiments, the length of the major axis is 1.5 mm to 3 mm, and the length of the minor axis is 0.8 mm to 1.5 mm. As an example, the length of the major axis can be 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3.0 mm, or within the range of any two of the above points; the length of the minor axis can be 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, or within the range of any two of the above points.

[0068] In some embodiments, the length of the aerosol generating substrate 100 is 10 mm to 35 mm.

[0069] In some embodiments, the ratio of the length of the aerosol generating substrate 120 to the length of the electromagnetic induction heating device 110 is 1:(0.8-1). As an example, the ratio of the length of the aerosol generating substrate 120 to the length of the electromagnetic induction heating device 110 may be 1:0.8, 1:0.81, 1:0.82, 1:0.83, 1:0.84, 1:0.85, 1:0.86, 1:0.87, 1:0.88, 1:0.89, 1:0.9, 1:0.91, 1:0.92, 1:0.93, 1:0.94, 1:0.95, 1:0.96, 1:0.97, 1:0.98, 1:0.99, 1:1, or within the range of any two of the above point values.

[0070] Optionally, the ratio of the length of the aerosol generating substrate 120 to the length of the electromagnetic induction heating device 110 is 1:1.

[0071] In some embodiments, the aerosol generating substrate 120 includes one or more of shredded tobacco, shredded tobacco stems, reconstituted tobacco leaves, and tobacco particles.

[0072] It is understandable that the aerosol generating substrate 120 may also contain one or more of a smoke generating agent, a flavoring agent, and other functional aids.

[0073] like Figure 3As shown, in the second aspect of the present application, an aerosol generating device is provided, comprising a wrapping layer 400, a filter body 300, a hollow device 200 and the above-mentioned aerosol generating substrate 100; the wrapping layer 400 is wrapped around the outer sides of the filter body 300, the hollow device 200 and the aerosol generating substrate 100 which are arranged in sequence.

[0074] In some embodiments, the aerosol generating device comprises a heated cigarette.

[0075] Since the electromagnetic induction heating device 110 in the aerosol generating matrix 100 has a hollow cavity, air can flow into the hollow device 200 through the hollow cavity of the electromagnetic induction heating device 110, thereby affecting the distribution uniformity of the aerosol generating matrix 120 and reducing its concentration, thereby affecting the consumer experience.

[0076] like Figure 4 As shown, in some of the embodiments, the aerosol generating device further includes a diffusion device 500 , and the diffusion device 500 is disposed between the hollow device 200 and the aerosol generating substrate 100 .

[0077] By disposing the diffusion device 500 between the aerosol generating substrate 100 and the hollow device 200, the aerosol generated in the aerosol generating substrate 100 can be diffused more evenly, thereby improving the customer experience.

[0078] In some embodiments, the length of the diffuser 500 is 5 mm to 10 mm in the direction in which the aerosol generating substrate 100 extends toward the hollow device 200. As an example, the length of the diffuser 500 may be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, or within a range formed by any two of the above values.

[0079] In some embodiments, the cross-section of the diffusion device 500 is the same in size and shape as the cross-section of the aerosol generating substrate 100 , the hollow device 200 , and the filtering section.

[0080] In some embodiments, the diffuser 500 is a cylindrical structure. Further, the filter 300, the hollow device 200 and the aerosol generating substrate 100 are also cylindrical structures, and the wrapping layer 400 is arranged to form a cylindrical structure, which is wrapped around the outer side of the cylindrical filter 300, the hollow device 200 and the aerosol generating substrate 100.

[0081] In some embodiments, the cross-sectional perimeter of the diffuser 500 is 17 mm to 24 mm. As an example, the cross-sectional perimeter of the diffuser 500 can be 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, or a range formed by any two of the above values.

[0082] In some embodiments, the diffuser device 500 includes cellulose acetate tow.

[0083] In some embodiments, the single denier of the acetate fiber tow is 6Y-10Y, the total denier is 20000D-30000D, and the pressure drop is 5Pa / mm-15Pa / mm. Optionally, the single denier of the acetate fiber tow is 8Y, the total denier is 25000D, the length is 5mm, and the total pressure drop is 60Pa.

[0084] As an example, the denier of the acetate fiber tow may be 6Y, 7Y, 8Y, 9Y, 10Y, or within a range formed by any two of the above values.

[0085] As an example, the total denier of the acetate tow can be 20000D, 21000D, 22000D, 23000D, 24000D, 25000D, 26000D, 27000D, 28000D, 29000D, 30000D, or within the range formed by any two of the above point values.

[0086] As an example, the pressure drop of the acetate fiber tow can be 5Pa / mm, 6Pa / mm, 7Pa / mm, 8Pa / mm, 9Pa / mm, 10Pa / mm, 11Pa / mm, 12Pa / mm, 13Pa / mm, 14Pa / mm, 15Pa / mm, or within a range formed by any two of the above point values. Optionally, the pressure drop of the acetate fiber tow is 12Pa / mm.

[0087] One end of the diffuser 500 is in direct contact with the aerosol generating substrate 100, and the aerosol generating substrate 120 usually has a relatively high temperature when in use. High temperature will reduce the adsorption and retention of aerosols by the diffuser 500, so a relatively small acetate fiber bundle can be selected.

[0088] In some embodiments, the filter body 300 includes acetate fiber tow. The acetate fiber tow in the filter body 300 is usually selected to have a high single denier and a low total denier; for example, the single denier is greater than 10Y and the total denier is less than 30000D. In this way, the adsorption and retention of aerosols can be reduced while ensuring the appearance. Optionally, the single denier of the acetate fiber tow in the filter body 300 is 12Y and the total denier is 22000D.

[0089] like Figure 5 As shown, in some embodiments, the diffuser 500 includes an outer cladding 520 and an inner core layer 510, the pressure drop of the acetate fiber bundle of the inner core layer 510 is greater than the pressure drop of the acetate fiber bundle of the outer cladding 520, and the end surface of the inner core layer 510 completely covers the inner cavity end surface of the electromagnetic induction heating device 110.

[0090] Choosing an acetate fiber bundle with a larger pressure drop as the inner core layer 510 to completely cover the inner cavity end surface of the electromagnetic induction heating device 110 can reduce the air flow diffusing from the hollow cavity of the electromagnetic induction heating device 110 to the hollow device 200, thereby not changing the diffusion path of the aerosol generating matrix 120 and not diluting and reducing the concentration and odor richness of the aerosol; and choosing an acetate fiber bundle with a smaller pressure drop as the outer covering layer 520, which covers the top of the aerosol generating matrix 120, can effectively diffuse the aerosol generated by the heating of the aerosol generating matrix 120, so that the distribution and diffusion are more uniform.

[0091] like Figure 6 As shown, in some embodiments, the diffusion device 500 includes a sealing component 530, a connecting component 540 and a shell 550, the sealing component 530 is placed in the inner cavity of the shell 550, the sealing component 530 and the shell 550 are connected by the connecting component 540 and a cavity is formed between the sealing component 530 and the shell 550; and the end surface of the sealing component 530 completely covers the inner cavity end surface of the electromagnetic induction heating device 110.

[0092] In some embodiments, the number of the connecting components 540 is at least one, for example, 1 to 10, or may be within a range consisting of any two integers from 1 to 10.

[0093] Figure 6 A in the middle is that the sealing component 530 is connected to the housing 550 via two connecting components 540; Figure 6 In the middle, B is a sealing component 530 connected to the housing 550 via three connecting components 540; Figure 6 In the middle, C indicates that the sealing component 530 is connected to the housing 550 via four connecting components 540 .

[0094] In some embodiments, the diffusion device 500 includes one or more of a resin and a metal material.

[0095] As an example, the resin includes one or more of polyethylene resin (PE), polypropylene resin (PP) and polyethylene terephthalate (PET); it should be noted that the present application does not specifically limit the type of resin, and it may also be other resins commonly used in the art.

[0096] As an example, the metal includes one or more of aluminum and its alloy materials, copper and its alloy materials, iron and its alloy materials; it should be noted that the present application does not specifically limit the type of metal, and it may also be other metals commonly used in the art.

[0097] In some embodiments, the cross-sectional shape of the sealing component 530 is the same as the cross-sectional shape of the electromagnetic induction heating device 110; alternatively, the cross-sectional shape of the sealing component 530 may be slightly larger than the cross-sectional shape of the electromagnetic induction heating device 110, but smaller than the cross-sectional shape of the aerosol generating substrate 100. In this way, the sealing component 530 can block the air in the electromagnetic induction heating device 110 from entering the hollow device 200, reduce the influence of the air on the diffusion path of the aerosol generating substrate 120, and will not reduce the concentration of the aerosol due to the entry of air, so that consumers have a good experience.

[0098] In some embodiments, the diameter of the housing 550 is the same as the diameter of the aerosol generating substrate 100, the hollow device 200, and the filter segment.

[0099] In some embodiments, the sealing member 530 may be cylindrical or disc-shaped.

[0100] It is understandable that the tubular housing 550 and the cylindrical sealing component 530 are not in direct contact, and the two are connected via the connecting component 540. In this way, a cavity for the aerogel to pass through can be formed between the tubular housing 550 and the cylindrical sealing component 530.

[0101] The present application does not specifically limit the position of the connecting member 540, as long as the housing 550 and the sealing member 530 can be connected and remain relatively stable. For example, the position where the connecting member 540 and the sealing member 530 are connected can be the top, bottom or middle position of the side wall 111.

[0102] In some embodiments, the end where the electromagnetic induction heating device 110 is connected to the hollow device 200 is a closed end.

[0103] It can be understood that setting the end connecting the electromagnetic induction heating device 110 and the hollow device 200 as a closed end can prevent air from entering the hollow device 200 from the hollow cavity of electromagnetic induction, reduce the impact of air on the diffusion path of the aerosol generating matrix 120, and will not reduce the concentration of aerosol due to the entry of air, thereby giving consumers a good experience.

[0104] Compared with the method of setting the diffusion device 500, the aerosol device prepared by using the electromagnetic induction heating device 110 with one end as a closed end has a simpler and lighter structure.

[0105] In a third aspect of the present application, an aerosol generating system is provided, comprising the above-mentioned aerosol generating device and a heating device;

[0106] The heating device is used to heat the aerosol generating substrate 100 or the aerosol generating device.

[0107] In some embodiments, the heating device includes a heating component, a battery component, a control component and a shell. The battery component is used to supply power to the heating device, and the control component is used to control the magnitude of the current in the battery component. The heating component, the battery component and the control component are housed in the shell.

[0108] In some embodiments, the heating element may be a central heating type heating element, or a circumferential heating type heating element.

[0109] The present application will be further described below in conjunction with specific examples and comparative examples, but they should not be construed as limiting the scope of protection of the present application. The raw materials involved in the following specific examples, unless otherwise specified, can all be sourced from commercial sources, the instruments used, unless otherwise specified, can all be sourced from commercial sources, and the processes involved, unless otherwise specified, are all conventionally selected by those skilled in the art.

[0110] Example 1

[0111] (1) The aerosol generating matrix 120 is made of 80% reconstituted tobacco leaves and 20% shredded tobacco, based on mass percentage.

[0112] (2) a tubular electromagnetic induction heating device having the same length as the aerosol generating substrate 120 is arranged at the center of the aerosol generating substrate 120 to obtain the aerosol generating substrate 100;

[0113] The cross section of the electromagnetic induction heating device in Example 1 is circular with a diameter of 2 mm; the side wall 111 is provided with a hollow hole 112 , the shape of the hollow hole 112 is rectangular, and the total area of ​​the hollow hole 112 accounts for 1 / 2 of the total area of ​​the side wall 111 .

[0114] (3) Using an acetate fiber bundle with a specification of 5.0Y / 22000D, a circumference of 12 mm, a length of 5 mm, and a pressure drop of 10 Pa / mm as the inner core layer 510, and using an acetate fiber bundle with a specification of 10.0Y / 18000D, a circumference of 22.6 mm, and a length of 5 mm as the outer cladding layer 520; the total pressure drop of the inner core layer 510 and the outer cladding layer 520 is 17 Pa / mm; Figure 5 A diffusion device 500 is shown.

[0115] (4) The filter body 300 is prepared by using acetate fiber tow with a specification of 12Y / 22000D.

[0116] (5) If Figure 4 As shown, the filter body 300, the hollow device 200, the diffuser 500 and the aerosol generating matrix 100 are connected in sequence, and cigarette paper is used to wrap the outer sides of the filter body 300, the hollow device 200, the diffuser 500 and the aerosol generating matrix 100 connected in sequence to form a wrapping layer 400 to obtain a heated cigarette.

[0117] Performance Testing

[0118] a. Electromagnetic induction heating: providing current to the induction coil in the heating cigarette smoking device so that it generates electromagnetic induction with the electromagnetic induction heating device in the aerosol generating substrate 100, thereby achieving heating.

[0119] b. Resistance heating: insert a heating needle into the hollow position in the middle of the electromagnetic induction heating device 110 in the aerosol generating substrate 100, and control the current to make the heating needle heat up.

[0120] Example 2

[0121] Example 2 is basically the same as Example 1, except that the diffusion element 500 is different; in Example 2, polypropylene resin (PP) is used to prepare Figure 6 The diffuser 500 shown in A has an airtight sealing component 530 at its center. The diameter of the sealing component 530 is 3 mm. The sealing component 530 is connected to the housing 550 via a plurality of connecting components 540 .

[0122] Example 3

[0123] Embodiment 3 is substantially the same as Embodiment 1, except that Embodiment 3 does not include the diffusion device 500, and the end where the electromagnetic induction heating device 110 is connected to the hollow device 200 is a sealed end.

[0124] Comparative Example 1

[0125] A sheet-shaped electromagnetic induction heating sheet is arranged inside the aerosol generating substrate.

[0126] The filter body, the hollow device and the aerosol generating matrix are connected in sequence, and cigarette paper is used to wrap the outer sides of the filter body, the hollow device and the aerosol generating matrix connected in sequence to obtain a heated cigarette.

[0127] Performance Testing

[0128] The induction coil in the cigarette heating device is provided with electric current, so that it generates electromagnetic induction with the electromagnetic induction heating device in the aerosol generating matrix, thereby achieving heating.

[0129] Comparative Example 2

[0130] The filter body, the hollow device and the aerosol generating matrix are connected in sequence, and cigarette paper is used to wrap the outer sides of the filter body, the hollow device and the aerosol generating matrix connected in sequence to obtain a heated cigarette.

[0131] Performance Testing

[0132] The heating needle was inserted into the aerosol generating matrix, and the current was controlled to make the heating needle heat up. The heated cigarettes were evaluated by 7 cigarette sensory quality evaluation experts.

[0133] The performance test results of the aerosol generating devices prepared in Examples 1 to 3 and Comparative Examples 1 to 2 are shown in the following table. The test results were obtained by evaluating the heated cigarettes by 7 cigarette sensory quality evaluation experts.

[0134] Table 1

[0135]

[0136] It can be seen from the above table that compared with the sheet-type electromagnetic induction heating sheet in Comparative Example 1, the heating method using a tubular electromagnetic induction heating device in each embodiment of the present application can reduce the preheating time and provide a better smoking experience.

[0137] Compared with Comparative Example 2, which also adopts the central needle heating method, the heated cigarettes with a tubular electromagnetic induction heating device in each embodiment of the present application can reduce the preheating time and provide a better smoking experience.

[0138] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0139] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An aerosol generating substrate, characterized in that: The aerosol generating substrate comprises an aerosol generating matrix and an electromagnetic induction heating device, wherein the aerosol generating matrix is ​​wrapped around the outer side of the electromagnetic induction heating device; and the electromagnetic induction heating device is a hollow tubular structure.

2. The aerosol generating substrate according to claim 1, characterized in that: A hollow hole is arranged on the side wall of the electromagnetic induction heating device.

3. The aerosol generating substrate according to claim 2, characterized in that: The shape of the hollow hole is circular, elliptical, diamond-shaped, square or rectangular.

4. The aerosol generating substrate according to claim 2, characterized in that: Based on the total area of ​​the side walls of the electromagnetic induction heating device, the total area of ​​the hollow holes accounts for 1 / 3 to 2 / 3.

5. The aerosol generating substrate according to any one of claims 1 to 4, characterized in that: The cross-sectional shape of the inner cavity of the electromagnetic induction heating device is circular, elliptical, polygonal or irregular.

6. The aerosol generating substrate according to claim 5, characterized in that: The cross-sectional shape of the inner cavity of the electromagnetic induction heating device is circular, and the cross-sectional diameter of the electromagnetic induction heating device is 1.5 mm to 2.5 mm.

7. The aerosol generating substrate according to claim 5, characterized in that: The cross-sectional shape of the inner cavity of the electromagnetic induction heating device is elliptical, and the ratio of the major axis length to the minor axis length of the cross-sectional shape of the inner cavity of the electromagnetic induction heating device is (1.2~2.5):

1.

8. The aerosol generating substrate according to claim 7, characterized in that: The length of the major axis is 1.5 mm to 3 mm, and the length of the minor axis is 0.8 mm to 1.5 mm.

9. The aerosol generating substrate according to any one of claims 1 to 4 and 6 to 8, characterized in that: The length of the aerosol generating substrate is 10 mm to 35 mm.

10. The aerosol generating substrate according to any one of claims 1 to 4 and 6 to 8, characterized in that: The ratio of the length of the aerosol generating substrate to the length of the electromagnetic induction heating device is 1:(0.8~1).

11. The aerosol generating substrate according to any one of claims 1 to 4 and 6 to 8, characterized in that: The aerosol generating substrate includes one or more of shredded tobacco, shredded tobacco stems, reconstituted tobacco leaves and tobacco particles.

12. An aerosol generating device, characterized in that: It comprises a wrapping layer, a filter body, a hollow device and the aerosol generating substrate according to any one of claims 1 to 11; the wrapping layer wraps the outer sides of the filter body, the hollow device and the aerosol generating substrate which are arranged in sequence.

13. The aerosol generating device according to claim 12, characterized in that: It also includes a diffusion device, which is arranged between the hollow device and the aerosol generating substrate.

14. The aerosol generating device according to claim 13, characterized in that: The length of the diffusion device is 5 mm to 10 mm.

15. The aerosol generating device according to any one of claims 13 to 14, characterized in that: The diffuser element includes cellulose acetate tow.

16. The aerosol generating device according to claim 15, characterized in that: The single denier of the acetate fiber tow is 6Y~10Y, the total denier is 20000D~30000D, and the pressure drop is 5Pa / mm~15Pa / mm.

17. The aerosol generating device according to claim 16, characterized in that: The diffusion device comprises an outer cladding layer and an inner core layer, the pressure drop of the acetate fiber bundle of the inner core layer is greater than the pressure drop of the acetate fiber bundle of the outer cladding layer, and the end surface of the inner core layer completely covers the inner cavity end surface of the electromagnetic induction heating device.

18. The aerosol generating device according to any one of claims 13 to 14, characterized in that: The diffusion device includes a sealing component, a connecting component and a shell. The sealing component is placed in the inner cavity of the shell. The sealing component is connected to the shell through the connecting component and a cavity is formed between the sealing component and the shell. The end face of the sealing component completely covers the inner cavity end face of the electromagnetic induction heating device.

19. The aerosol generating device according to claim 12, characterized in that: One end of the electromagnetic induction heating device close to the hollow device is a closed end.

20. An aerosol generating system, characterized in that: An aerosol generating device and a heating device according to any one of claims 12 to 19; The heating device is used to heat the aerosol generating substrate or the aerosol generating device.

21. The aerosol generating system according to claim 20, characterized in that: The heating device includes a heating component, a battery component, a control component and a shell. The battery component is used to supply power to the heating device, and the control component is used to control the magnitude of the current in the battery component. The heating component, the battery component and the control component are accommodated in the shell.

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