Containing tube, aerosol generating device and system

Abstract

The utility model provides a containing tube, an aerosol generating device and an aerosol generating system. The containing pipe is used for containing at least part of aerosol generating products and comprises an annular side wall, a bottom wall and a limiting structure. The bottom wall is connected with the annular side wall and is provided with a plurality of air passage holes, and the air passage holes are capillary holes; the limiting structure is located in the containing pipe and used for limiting the aerosol generating product in the inserting direction of the aerosol generating product so that the aerosol generating product and the bottom wall can be arranged in a spaced mode. In this way, the aerosol generating product and the bottom wall of the containing pipe are arranged in a spaced mode through the limiting structure, so that a condensation cavity is defined and formed; aerosol formed by atomization and condensate of the aerosol can be stored in the condensation cavity, part of the condensate in the condensation cavity is adsorbed into the air passage hole under the capillary action of the air passage hole and blocks the air passage hole, the condensate in the condensation cavity and the aerosol generated subsequently are effectively prevented from overflowing from the containing pipe, the residue of the condensate outside the containing pipe is reduced, and the service life of the device is prolonged. And the risk of generating peculiar smell is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic atomization, and in particular to a containing tube, an aerosol generating device and a system. Background Art

[0002] The Heat Not Burning (HNB) aerosol generating system is a combination of an aerosol generating device and an aerosol generating product. The aerosol generating device includes a receiving tube and a heating component, wherein the receiving tube is used to receive the aerosol generating product, and the heating component is used to heat the aerosol generating product at a high temperature to form an aerosol.

[0003] However, the condensate of the aerosol formed by atomization of the existing aerosol generating device will be adsorbed on the containing tube, and an odor will be generated for a long time. Utility Model Content

[0004] The containing tube, aerosol generating device and system provided in the present application are intended to solve the problem of aerosol condensate adhering to the containing tube and generating odor for a long time.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is: providing a containing tube for containing at least part of the aerosol generating product. The containing tube comprises: an annular side wall; a bottom wall connected to the annular side wall and having a plurality of airway holes, wherein the airway holes are capillary holes; and a limiting structure located in the containing tube for limiting the aerosol generating product along the insertion direction of the aerosol generating product so that the aerosol generating product is spaced apart from the bottom wall.

[0006] In one embodiment, a distance between a surface of the limiting structure facing away from the bottom wall and the bottom wall is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

[0007] In one embodiment, the width of the limiting structure is greater than or equal to 0.2 mm and less than or equal to 0.5 mm.

[0008] In one embodiment, the limiting structure is a convex ring disposed on the bottom wall and extending along the periphery of the bottom wall.

[0009] In one embodiment, the airway hole is a non-strip hole, and the hole diameter of the non-strip hole is greater than or equal to 0.1 mm and less than or equal to 0.8 mm; or the airway hole is a strip hole, and the width of the strip hole is greater than or equal to 0.1 mm and less than or equal to 0.8 mm.

[0010] In one embodiment, the bottom wall further has a first through hole for allowing the heating body to pass through, and a plurality of the airway holes are distributed in a circumferential direction around the first through hole.

[0011] In one embodiment, the ratio of the total cross-sectional area of ​​all the airway holes to the cross-sectional area of ​​the bottom wall is 15%-60%; wherein the cross-sectional area of ​​the bottom wall does not include the cross-sectional area of ​​the first through hole.

[0012] In order to solve the above technical problems, the second technical solution provided in the present application is: to provide an aerosol generating device, comprising: a shell assembly; a bracket, arranged in the shell assembly and having an installation groove; a housing tube, arranged in the installation groove and cooperating with the groove wall of the installation groove to form an air inlet channel; a heating assembly, arranged in the shell assembly, for heating the aerosol generating product; wherein the housing tube is the housing tube as described above.

[0013] In one embodiment, the aerosol generating device also includes: an airway cover, which is arranged between the bottom wall of the containing tube and the bottom wall of the mounting groove; the airway cover has a second through hole arranged corresponding to the first through hole; wherein the heating component is arranged at the bottom of the mounting groove, and the heating component includes a heating body; the heating body passes through the second through hole and the first through hole into the containing tube; the heating body contacts the hole wall of the second through hole.

[0014] In one embodiment, the surface of the airway cover facing the bottom wall of the containing tube has a first annular protrusion surrounding the second through hole; the first annular protrusion surrounds the heating body and is in contact with the heating body; the bottom wall of the containing tube is supported by the first annular protrusion and is spaced apart from the airway cover; and / or the surface of the airway cover facing away from the bottom wall of the containing tube has a second annular protrusion surrounding the second through hole; the second annular protrusion surrounds the heating body and is in contact with the heating body.

[0015] In one embodiment, a distance between a surface of the bottom wall of the accommodating tube facing the airway cover and a surface of the airway cover facing the bottom wall of the accommodating tube is greater than or equal to 0.2 mm and less than or equal to 0.4 mm.

[0016] In one embodiment, a surface of the airway cover facing the bottom wall of the accommodation tube and an outer surface of the bottom wall of the accommodation tube are both planes.

[0017] In one embodiment, the thermal conductivity of the airway cover is greater than the thermal conductivity of the bracket.

[0018] In order to solve the above technical problems, the third technical solution provided by the present application is: to provide an aerosol generating system, comprising: an aerosol generating device as described above; an aerosol generating product, which is used to be at least partially inserted into the containing tube and abut against the side surface of the limiting structure of the containing tube away from the bottom wall; a circumferential sealing structure is formed at least at one point between the inner wall surface of the containing tube and the outer wall surface of the aerosol generating product. The aerosol generating product forms a closed condensation chamber with the bottom wall and part of the annular side wall of the containing tube, and the condensation chamber is connected to the air inlet channel through the airway hole.

[0019] Beneficial effects of the present application: Different from the prior art, the present application provides a containing tube, which is used to contain at least part of the aerosol generating product. The containing tube includes an annular side wall, a bottom wall and a limiting structure. The bottom wall is connected to the annular side wall and has a plurality of airway holes, and the airway holes are capillary holes; the limiting structure is located in the containing tube, and is used to limit the aerosol generating product along the insertion direction of the aerosol generating product, so that the aerosol generating product and the bottom wall are spaced apart. Among them, by setting a limiting structure in the containing tube, a plurality of airway holes are opened on the bottom wall of the containing tube, and the airway holes are made into capillary holes; in this way, when the containing tube accommodates the aerosol generating product, the limiting structure can be used to space the aerosol generating product and the bottom wall of the containing tube to define a condensation chamber; the aerosol generated by the atomization of the aerosol generating product can be stored in the condensation chamber, and part of the condensation in the condensation chamber is adsorbed into the airway hole under the capillary action of the airway hole, and the airway hole is blocked, so that the condensation in the condensation chamber and the subsequently generated aerosol can be effectively prevented from overflowing from the containing tube, reducing the residual condensation outside the containing tube and reducing the risk of generating odor. Moreover, during the suction process, the condensation in the airway hole is re-sucked into the condensation chamber under the action of the pressure difference and absorbed by the aerosol generating product, and the cycle is repeated, which effectively reduces the formation of condensation inside and outside the containing tube, and reduces the risk of odor caused by long-term adsorption of condensation inside and outside the containing tube; at the same time, the effective utilization rate of the aerosol is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall structure of an aerosol generating system provided in one embodiment of the present application;

[0021] Figure 2 This is provided by an embodiment of the present application Figure 1 A cross-sectional view taken along line AA of the aerosol generating system shown;

[0022] Figure 3 yes Figure 2 A schematic diagram of the structure of the aerosol generating device;

[0023] Figure 4 yes Figure 3 The enlarged view of P in the middle;

[0024] Figure 5a is a simplified vertical cross-sectional view of a housing tube provided in one embodiment of the present application;

[0025] Figure 5b is a vertical cross-sectional view of a housing tube provided in a specific embodiment of the present application;

[0026] Figure 6 is a schematic structural diagram of a housing tube provided in the first embodiment of the present application at a first viewing angle;

[0027] Figure 7 is a schematic structural diagram of a housing tube provided in a second embodiment of the present application at a first viewing angle;

[0028] Figure 8 is a schematic structural diagram of a housing tube provided in a third embodiment of the present application at a first viewing angle;

[0029] Fig. 9 is a simplified diagram of the structure in which the aerosol generating product is contained in a containing tube;

[0030] Fig.10 is a schematic diagram of the overall structure of an airway cover provided in one embodiment of the present application;

[0031] Fig.11 yes Fig.10 A BB-section view of the airway cover shown;

[0032] Fig.12 Another embodiment of the present application is Figure 2 Enlarged view of the middle Q.

[0033] Description of Figure Numbers:

[0034] 1-aerosol generating article; 11-filter segment; 12-connecting segment; 13-matrix segment; 131-aerosol generating matrix.

[0035] 2-aerosol generating device; 21-containing tube; 211-annular side wall; 212-bottom wall; 213-airway hole; 214-first through hole; 215-convex ring; 216-condensation chamber; 217-limiting structure; 218-third annular protrusion; 22-shell assembly; 23-bracket; 24-mounting groove; 25-inlet channel; 26-heating body; 27-airway cover; 271-second through hole; 272-main body; 273-first annular protrusion; 274-second annular protrusion. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0038] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0039] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0040] See also Figure 1 , Figure 1 It is a schematic diagram of the overall structure of an aerosol generating system provided in one embodiment of the present application. Figure 2 This is provided by an embodiment of the present application Figure 1AA section view of the aerosol generating system shown. In the present embodiment, an aerosol generating system is provided, which can be used in different fields such as medical treatment, beauty treatment, and leisure smoking. The aerosol generating system comprises an aerosol generating product 1 and an aerosol generating device 2. The aerosol generating product 1 comprises a filter segment 11, a connecting segment 12, and a matrix segment 13 connected in sequence. The matrix segment 13 comprises an aerosol generating matrix 131. The aerosol generating device 2 is used to heat the aerosol generating matrix 131 to form an aerosol when powered on. The filter segment 11 is used to filter the aerosol. The connecting segment 12 is used to reduce the temperature of the aerosol formed by atomization to prevent burning the mouth. The other specific structures and functions of the filter segment 11, the connecting segment 12, and the matrix segment 13 are the same or similar to the specific structures and functions of the existing aerosol generating products, and will not be repeated here.

[0041] See also Figure 3 and Figure 4 , Figure 3 yes Figure 2 A schematic diagram of the structure of the aerosol generating device; Figure 4 yes Figure 3 Enlarged view of point P in the figure. The aerosol generating device 2 includes a containing tube 21, a shell assembly 22, a bracket 23 and a heating assembly. The containing tube 21 is used to accommodate the aerosol generating product 1. The bracket 23 is arranged in the shell assembly 22, and the bracket 23 has a mounting groove 24. The containing tube 21 is arranged in the mounting groove 24, and the outer wall surface of the containing tube 21 cooperates with the inner wall surface of the mounting groove 24 to form an air inlet channel 25. External gas enters the matrix segment 13 of the aerosol generating product 1 from the bottom of the containing tube 21 through the air inlet channel 25, and carries the aerosol generated by the matrix segment 13 out of the filter segment 11 for the user to inhale. The specific structure and function of the containing tube 21 can be found in the relevant description of the containing tube 21 in the following embodiments.

[0042] The heating assembly is disposed in the housing assembly 22. The heating assembly includes a heating body 26, which is disposed at the bottom of the mounting groove 24 and extends into the receiving tube 21, and is used to insert the aerosol generating product 1 and heat the aerosol generating product 1 when powered on.

[0043] Of course, the aerosol generating device 2 also includes components such as a power supply, a circuit board, a seal, and a fixing. The specific structure and function of these components are the same or similar to the specific structure and function of the relevant components in the existing aerosol generating device, and can achieve the same or similar technical effects. For details, please refer to the prior art.

[0044] In one embodiment, if Figure 5a and Figure 5b As shown, Figure 5a is a simplified vertical cross-sectional view of a housing tube provided in one embodiment of the present application; Figure 5b2 is a vertical cross-sectional view of a housing tube provided in a specific embodiment of the present application. The housing tube 21 includes an annular side wall 211, a bottom wall 212 and a limiting structure 217. The annular side wall 211 is a continuous side wall, that is, no through-hole structure is provided on the annular side wall 211. The bottom wall 212 is connected to the annular side wall 211 and is arranged to form a housing cavity for housing the aerosol generating product 1.

[0045] The bottom wall 212 has a plurality of airway holes 213 and a first through hole 214. The heating element is inserted into the containing tube 21 through the first through hole 214. The first through hole 214 can be opened at the center of the bottom wall 212, so that the heating element can be used to uniformly heat the aerosol generating product 1 contained in the containing tube 21. Specifically, the aperture of the first through hole 214 is greater than or equal to 2.5 mm and less than or equal to 3.5 mm, for example, it can be 2.5 mm, 3.0 mm or 3.5 mm. The cross-sectional shape of the first through hole 214 can be circular. The central axis of the circular first through hole 214 coincides with the central axis of the containing tube 21.

[0046] The airway holes 213 are capillaries, and the capillaries have capillary forces. Since the liquid has surface tension, the liquid can be adsorbed into the capillaries by the capillary forces of the capillaries and close the capillaries. The plurality of airway holes 213 are evenly distributed around the first through hole 214 along the circumferential direction of the first through hole 214. Among them, the plurality of airway holes 213 are arranged at intervals on the outside of the first through hole 214, which can reduce the heat on the side of the first through hole 214 to be conducted toward the annular side wall 211, so that the heat is focused on the side of the first through hole 214, thereby reducing the generation of condensate.

[0047] In a specific embodiment, see Figure 6 , Figure 6 It is a schematic diagram of the structure of the containment tube provided in the first embodiment of the present application at a first viewing angle; the airway hole 213 is a non-strip hole, that is, the cross-sectional shape of the airway hole 213 is non-strip; for example, the airway hole 213 is a circular hole or a square hole. The aperture of the non-strip hole is greater than or equal to 0.1 mm and less than or equal to 0.8 mm; for example, it can be 0.1 mm, 0.3 mm, 0.5 mm, 0.7 mm or 0.8 mm, etc. Among them, the aperture of the non-strip hole is less than 0.1 mm or greater than 0.8 mm, which is not conducive to the capillary action of the airway hole 213 and cannot better adsorb the condensate. Preferably, the aperture of the non-strip hole is greater than or equal to 0.3 mm and less than or equal to 0.5 mm; for example, it is 0.3 mm, 0.4 mm, or 0.5 mm. Among them, when the airway hole 213 is a circular hole, the aperture of the airway hole 213 is the diameter of the corresponding circle; when the airway hole 213 is a square hole, the aperture of the airway hole 213 is the size of the diagonal of the corresponding square; when the airway hole 213 is an irregular shape, the aperture of the airway hole 213 is the shortest distance between the two vertices of the corresponding shape.

[0048] In this specific embodiment, the multiple airway holes 213 have the same shape and size, and are arranged in at least one ring around the first through hole 214. Among the multiple airway holes 213 on the same ring, the spacing between each two adjacent airway holes 213 is the same, and the distance between each airway hole 213 and the first through hole 214 is also the same.

[0049] In another specific embodiment, see Figure 7 and Figure 8 , Figure 7 2 is a schematic diagram of the structure of the housing tube provided in the second embodiment of the present application at a first viewing angle; the airway hole 213 is a strip hole, that is, the cross-sectional shape of the airway hole 213 is a strip; for example, Figure 7 As shown, the cross-sectional shape of the airway hole 213 can be an arc; or Figure 8 As shown, Figure 8 2 is a schematic diagram of the structure of the housing tube provided in the third embodiment of the present application at a first viewing angle. The cross-sectional shape of the airway hole 213 can be a long strip, etc. The width M of the strip hole is greater than or equal to 0.1 mm and less than or equal to 0.8 mm; for example, it can be 0.1 mm, 0.3 mm, 0.5 mm, 0.7 mm or 0.8 mm, etc. Preferably, the width M of the strip hole is greater than or equal to 0.3 mm and less than or equal to 0.5 mm; for example, it is 0.3 mm, 0.4 mm, or 0.5 mm.

[0050] It should be noted that the "strip hole" involved in this application refers to a hole whose cross section is long, arc-shaped or curved, etc.; it can also be understood that the ratio of the length and width of the hole is not less than 2. "Non-strip hole" refers to a hole whose length and width ratio is less than 2; for example, round, oval or square, diamond, etc. Among them, the length of the hole refers to the maximum size of the hole; the width of the hole refers to the maximum size in the direction perpendicular to the length of the hole.

[0051] In one embodiment, the ratio of the total cross-sectional area of ​​all the airway holes 213 on the bottom wall 212 to the cross-sectional area of ​​the bottom wall 212 of the receiving tube 21 is 15%-60%. The cross-sectional area of ​​the bottom wall 212 does not include the cross-sectional area of ​​the first through hole 214. The ratio has an impact on the condensate absorption effect of the multiple airway holes 213 of the bottom wall 212; the larger the ratio, the better the condensate absorption effect; however, if the ratio is greater than 60%, the support strength of the bottom wall 212 of the receiving tube 21 will be weakened, and if the ratio is less than 15%, the multiple airway holes 213 cannot achieve the desired condensate absorption effect, that is, when not suctioned, the condensate cannot be absorbed by capillary force, and the condensate cannot form a liquid film in the airway holes 213 to block the airway holes 213; and when suctioned, the condensate in the airway holes 213 is drawn back into the receiving tube 21.

[0052] Combination Figure 5b and Fig. 9 , Fig. 9 2 is a simplified structural diagram of an aerosol generating product contained in a containing tube; a limiting structure 217 is located in the containing tube 21, and is used to limit the aerosol generating product 1 along the insertion direction of the aerosol generating product 1, so that the aerosol generating product 1 is spaced apart from the bottom wall 212. When the aerosol generating product 1 is contained in the containing tube 21, the aerosol generating product 1, the bottom wall 212 of the containing tube 21, and a part of the annular side wall 211 form a condensation chamber 216, and the condensation chamber 216 is connected to the air inlet channel 25 through the airway hole 213.

[0053] Specifically, when the aerosol generating product 1 is contained in the containing tube 21, the entire outer side surface of the aerosol generating product 1 is in contact with the annular side wall 211 of the containing tube 21, that is, there is almost no gap between the side wall of the aerosol generating product 1 and the containing tube 21, and the external gas cannot enter the condensation chamber 216 from between the side wall of the aerosol generating product 1 and the containing tube 21. In this specific embodiment, the aerosol generating product 1 and the bottom wall 212 and part of the annular side wall 211 of the containing tube 21 form a closed condensation chamber 216, and the condensation chamber 216 is specifically connected to the air inlet channel 25 through the airway hole 213. In this way, it is possible to prevent the aerosol from overflowing from other positions of the condensation chamber 216, causing the condensate to be adsorbed outside the containing tube 21 for a long time and produce odor. Optionally, the side wall of the aerosol generating product 1 and the containing tube 21 may be sealed by other means, such as by providing a sealing ring at the entrance of the containing tube 21. After the aerosol generating product 1 is accommodated in the containing tube 21, there is no gap between the side wall of the aerosol generating product 1 and the containing tube 21, and external gas cannot enter the condensation chamber 216 from between the side wall of the aerosol generating product 1 and the containing tube 21.

[0054] The above-mentioned arrangement, by setting a limiting structure 217 in the containing tube 21, opens a plurality of airway holes 213 on the bottom wall 212 of the containing tube 21, and makes the airway holes 213 capillary holes; in this way, when the containing tube 21 accommodates the aerosol generating product 1, the limiting structure 217 can be used to space the aerosol generating product 1 and the bottom wall 212 of the containing tube 21 to define a condensation chamber 216; the aerosol formed by the atomization of the aerosol generating product 1, its condensate can be stored in the condensation chamber 216, and part of the condensate in the condensation chamber 216 is adsorbed into the airway hole 213 under the capillary action of the airway hole 213, and the airway hole 213 is blocked, thereby effectively preventing the condensate in the condensation chamber 216 and the subsequently generated aerosol from overflowing from the containing tube 21, reducing the residual condensate outside the containing tube 21, and reducing the risk of generating odor. Moreover, during the suction process, the condensate in the airway hole 213 is re-sucked into the condensation chamber 216 under the action of the pressure difference and absorbed by the aerosol generating product 1. This cycle is repeated, which effectively reduces the formation of condensate inside and outside the containing tube 21, and reduces the risk of odor inside and outside the containing tube 21 due to long-term adsorption of condensate; at the same time, the effective utilization rate of the aerosol is improved.

[0055] In a specific embodiment, the limiting structure 217 is disposed on the bottom wall 212 of the containing tube 21 and extends along the periphery of the bottom wall 212. The limiting structure 217 can be a convex ring 215 in a closed loop. Specifically, each position of the convex ring 215 along its circumferential direction is arranged in close contact with the annular side wall 211; the aerosol generating product 1 cooperates with the bottom wall 212 of the containing tube 21 and the side surface of the convex ring 215 away from the annular side wall 211 to form a closed condensation chamber 216.

[0056] Of course, in some other specific embodiments, the limiting structure 217 may also be a plurality of protrusions arranged at intervals on the bottom wall 212, and each protrusion has the same height along the depth direction of the containing tube 21. In this case, the aerosol generating product 1 cooperates with the bottom wall 212 of the containing tube 21, the outer wall surface of the plurality of protrusions, and part of the annular side wall 211 to form a closed condensation chamber 216. Alternatively, the limiting structure 217 is arranged on the side wall of the containing tube 21, and the limiting structure 217 is a closed-loop convex ring 215 or a plurality of protrusions arranged at intervals along the circumferential direction of the side wall of the containing tube 21.

[0057] In one embodiment, see Fig. 9 , the spacing H between the side surface of the limiting structure 217 away from the bottom wall 212 and the bottom wall 212 of the receiving tube 21 is greater than or equal to 0.1 mm and less than or equal to 0.5 mm; for example, H can be 0.1 mm, 0.3 mm, 0.5 mm, etc. Among them, when H is less than 0.1 mm, the volume of the condensation chamber 216 is too small to effectively deposit the condensate; when H is greater than 0.5 mm, it will cause excessive deposition of the condensate.

[0058] The width W of the limiting structure 217 is greater than or equal to 0.2 mm and less than or equal to 0.5 mm; for example, W can be 0.2 mm, 0.3 mm, 0.5 mm, etc. Among them, when W is less than 0.1 mm, the limiting structure 217 cannot effectively support the aerosol generating product 1; when W is greater than 0.5 mm, the supporting surface area of ​​the limiting structure 217 is larger, the air intake area corresponding to the accommodating tube 21 will be reduced, the inhalation resistance will increase, and the inhalation taste will be affected.

[0059] In one embodiment, in combination Figure 4 , Fig.10 and Fig.11 , Fig.10 is a schematic diagram of the overall structure of an airway cover provided in one embodiment of the present application; Fig.11 yes Fig.10 The BB section view of the airway cover is shown. The aerosol generating device 2 also includes an airway cover 27. The airway cover 27 is arranged between the bottom wall 212 of the accommodating tube 21 and the bottom wall 212 of the mounting groove 24, and the airway cover 27 has a second through hole 271, and the second through hole 271 is arranged corresponding to the first through hole 214 of the bottom wall 212 of the accommodating tube 21. The heating body 26 passes through the second through hole 271 and the first through hole 214 in sequence to enter the accommodating tube 21. Specifically, the heating body 26 contacts the hole wall of the second through hole 271. In this way, the heat of the heating body 26 can be conducted to the airway cover 27 to form a local high temperature on the airway cover 27, thereby reducing the formation of condensate in the condensation chamber 216.

[0060] Specifically, Fig.11 As shown, the airway cover 27 includes a main body 272, a first annular protrusion 273 and / or a second annular protrusion 274. The second through hole 271 is formed at the central position of the main body 272. The first annular protrusion 273 is provided on a side surface of the main body 272 facing the bottom wall 212 of the accommodating tube 21, and surrounds the second through hole 271, and the side surface of the first annular protrusion 273 facing the second through hole 271 is flush with the inner wall surface of the second through hole 271. The first annular protrusion 273 surrounds the heating body 26 and contacts the heating body 26. The second annular protrusion 274 is formed on a side surface of the airway cover 27 away from the bottom wall 212 of the accommodating tube 21, and surrounds the second through hole 271, and the side surface of the second annular protrusion 274 facing the second through hole 271 is flush with the inner wall surface of the second through hole 271. The second annular protrusion 274 surrounds the heating body 26 and contacts the heating body 26.

[0061] As described above, by adding the first annular protrusion 273 and the second annular protrusion 274 that contact the heating element to the airway cover 27, the contact area between the airway cover 27 and the heating element can be increased, thereby increasing the heat conduction between the heating element and the airway cover 27, so that more heat can be conducted to the airway cover 27, thereby further reducing the generation of condensation.

[0062] In a specific embodiment, in combination Figure 4 The bottom wall 212 of the receiving tube 21 abuts against the first annular protrusion 273 and is spaced apart from the main body 272 of the airway cover 27. In this way, the heat on the airway cover 27 can be further transferred to the bottom wall 212 of the receiving tube 21 through the first annular protrusion 273 to reduce the formation of condensate in the condensation chamber 216.

[0063] In one embodiment, if Fig.12 , Fig.12 Another embodiment of the present application is Figure 2 Enlarged view of Q in the middle. In this embodiment, the spacing H1 between the surface of the bottom wall 212 of the containing tube 21 facing the airway cover 27 and the surface of the airway cover 27 facing the bottom wall 212 of the containing tube 21 is greater than or equal to 0.2 mm and less than or equal to 0.4 mm, for example, it can be 0.2 mm, 0.3 mm, 0.4 mm, etc. Specifically, the surface of the bottom wall 212 of the containing tube 21 facing the airway cover 27 and the outer surface of the bottom wall 212 of the containing tube 21 are both planes, that is, the surface of the bottom wall 212 of the containing tube 21 facing the airway cover 27 and the outer surface of the bottom wall 212 of the containing tube 21 do not have any protruding structure. Preferably, the surface of the bottom wall 212 of the containing tube 21 facing the airway cover 27 is arranged parallel to the outer surface of the bottom wall 212 of the containing tube 21.

[0064] The benefit of the above arrangement is that, although the airway holes 213 of the bottom wall 212 of the receiving tube 21 can absorb part of the condensate, it is still inevitable that a small amount of condensate will seep downward from the airway holes 213 into the gap between the receiving tube 21 and the airway cover 27. If the gap between the receiving tube 21 and the airway cover 27 is small, for example, H1 is greater than or equal to 0.2 mm and less than or equal to 0.4 mm, when the external air flows through the gap, according to the air pressure principle, the negative pressure generated by the airflow can entrain the condensate deposited in the gap to flow upward, and then enter the receiving tube 21 through the airway holes 213, and accumulate in the condensation chamber 216, and the accumulated condensate is absorbed by the aerosol generating matrix 131. Therefore, the spacing H1 between the surface of the bottom wall 212 of the receiving tube 21 facing the airway cover 27 and the surface of the airway cover 27 facing the bottom wall 212 of the receiving tube 21 cannot be too large. If the gap between the receiving tube 21 and the airway cover 27 is too large, for example, H1 is greater than 0.4 mm, when the external air flows through the gap, it is impossible to carry all the condensate deposited in the gap into the receiving tube 21, and some condensate will still be deposited in the gap between the airway cover 27 and the receiving tube 21. Furthermore, the spacing H1 between the surface of the bottom wall 212 of the receiving tube 21 facing the airway cover 27 and the surface of the airway cover 27 facing the bottom wall 212 of the receiving tube 21 cannot be too small. If it is less than 0.2 mm, the air intake of the bottom wall 212 of the receiving tube 21 is insufficient, resulting in increased suction resistance.

[0065] Specifically, when the aerosol generating product 1 is contained in the containing tube 21, a circumferential sealing structure is formed at least at one place between the inner wall surface of the containing tube 21 and the outer wall surface of the aerosol generating product 1, that is, the gap between the inner wall surface of the containing tube 21 and the outer wall surface of the aerosol generating product 1 is sealed along the outer wall surface of the aerosol generating product 1. For example, in one embodiment, the entire outer side surface of the aerosol generating product 1 is in contact with the annular side wall 211 of the containing tube 21, that is, there is almost no gap between the side wall of the aerosol generating product 1 and the containing tube 21, and the external gas cannot enter the condensation chamber 216 from between the side wall of the aerosol generating product 1 and the containing tube 21, thereby avoiding the reduction of the airflow flowing through the gap between the containing tube 21 and the airway cover 27, and weakening the entrainment effect on the condensate in the gap, thereby preventing the condensate from being deposited between the airway cover 27 and the containing tube 21. In other embodiments, the inner diameter of the containing tube 21 can also be set to gradually decrease from top to bottom; the top inner diameter of the containing tube 21 is larger than the outer diameter of the aerosol generating product 1 to facilitate insertion; the bottom inner diameter of the containing tube 21 is equal to the outer diameter of the aerosol generating product 1 to facilitate the bottom inner surface of the containing tube 21 to fit tightly with the outer surface of the aerosol generating product 1.

[0066] The side wall of the aerosol generating product 1 and the containing tube 21 may also be sealed by other means. Optionally, a sealing ring (not shown) is provided at the entrance of the containing tube 21. After the aerosol generating product 1 is contained in the containing tube 21, there is no gap between the side wall of the aerosol generating product 1 and the containing tube 21, and the outside gas cannot enter the condensation chamber 216 from between the side wall of the aerosol generating product 1 and the containing tube 21, thereby avoiding a reduction in the airflow flowing through the gap between the containing tube 21 and the airway cover 27, and weakening the entrainment effect on the condensate in the gap, thereby preventing the condensate from being deposited between the airway cover 27 and the containing tube 21. Optionally, see Fig.12 A sealing ring is provided at the bottom of the inner wall of the receiving tube 21. The sealing ring can be a silicone ring bonded to the inner wall of the receiving tube 21, or a third annular protrusion 218 on the inner wall of the receiving tube 21.

[0067] In one embodiment, if Fig.12, the connection between the surface of the bottom wall 212 of the receiving tube 21 away from the airway cover 27 and the inner surface of the side wall of the receiving tube 21 has a third annular protrusion 218 along the radial direction of the receiving tube 21, so that when the aerosol generating product 1 is received in the receiving tube 21, there is almost no gap between the side wall of the aerosol generating product 1 and the third annular protrusion 218 of the receiving tube 21, and the external gas cannot enter the condensation chamber 216 from between the side wall of the aerosol generating product 1 and the receiving tube 21, thereby preventing the airflow of the normal airflow path from becoming smaller. It should be noted that the normal airflow path is that the external air enters from the air inlet channel 25, then passes through the gap between the receiving tube 21 and the airway cover 27, and enters the bottom of the aerosol generating product 1 through the airway hole 213, so that the airflow can carry part of the condensate deposited in the gap between the receiving tube 21 and the airway cover 27 into the receiving tube 21, thereby preventing the condensate from being deposited on the airway cover 27. If there is a gap between the inner wall of the receiving tube 21 and the outer wall of the aerosol generating product 1, part of the external airflow will enter from the gap between the receiving tube 21 and the aerosol generating product 1, and then enter the inside of the aerosol generating product 1 from between the bottom wall 212 of the receiving tube 21 and the bottom of the aerosol generating product 1, thereby reducing the airflow flowing through the gap between the receiving tube 21 and the airway cover 27, and weakening the entrainment effect on the condensate in the gap. In this way, by setting at least one place between the inner wall of the receiving tube 21 and the outer wall of the aerosol generating product 1 to be tightly matched, it can be ensured that all the external airflow flows through the gap between the receiving tube 21 and the airway cover 27, and the condensate deposited in the gap is promptly drawn away, preventing the condensate from being deposited between the airway cover 27 and the receiving tube 21. At the same time, the connection between the surface of the bottom wall 212 of the receiving tube 21 away from the airway cover 27 and the inner surface of the side wall of the receiving tube 21 has a third annular protrusion 218 along the radial direction of the receiving tube 21, which is easy to implement in terms of process.

[0068] The thermal conductivity of the airway cover 27 is greater than that of the bracket 23; thus, the heat transfer from the airway cover 27 to the bracket 23 can be reduced, the heat utilization rate can be improved, and the risk of the aerosol generating device 2 being hot can be reduced. Specifically, the material of the airway cover 27 can be metal or ceramic, and the material of the bracket 23 can be plastic.

[0069] The working principle of the aerosol generating system corresponding to the housing tube 21 is as follows:

[0070] The aerosol generating product 1 is inserted into the housing tube 21. During the heating process, the housing tube 21 and the airway cover 27 first form a local high temperature area, and the heating element heats the suction airflow, which preliminarily reduces the generation of condensate in the housing tube 21. Afterwards, the aerosol generated by the atomization of the aerosol generating matrix 131 first gradually forms condensate in the condensation chamber 216, and the formed condensate is adsorbed by the airway hole 213 through capillary action, and the airway hole 213 is blocked by the condensate; in this way, the aerosol formed subsequently will not overflow the condensation chamber 216 or only a very small amount of aerosol will overflow the condensation chamber 216, effectively reducing the risk of aerosol forming condensate in the air inlet channel 25. During the suction process, the condensate in the airway hole 213 is drawn back into the containing tube 21 by the negative pressure generated by the suction and accumulates in the condensation chamber 216. The accumulated condensate is absorbed by the aerosol generating matrix 131. This cycle is repeated, effectively avoiding the formation of condensate inside and outside the containing tube 21 and reducing the risk of condensate being adsorbed on the inner and outer walls of the containing tube 21 for a long time and generating odor.

[0071] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A container tube for containing at least part of an aerosol generating product, characterized in that: The housing tube comprises: annular side wall; A bottom wall connected to the annular side wall and having a plurality of airway holes, wherein the airway holes are capillary holes; The limiting structure is located in the containing tube and is used to limit the aerosol generating product along the insertion direction of the aerosol generating product so that the aerosol generating product is spaced apart from the bottom wall.

2. The housing tube according to claim 1, characterized in that: A distance between a side surface of the limiting structure facing away from the bottom wall and the bottom wall is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

3. The housing tube according to claim 1, characterized in that: The width of the limiting structure is greater than or equal to 0.2 mm and less than or equal to 0.5 mm.

4. The housing tube according to any one of claims 1 to 3, characterized in that: The limiting structure is a convex ring which is arranged on the bottom wall and extends along the periphery of the bottom wall.

5. The housing tube according to claim 1, characterized in that: The airway hole is a non-strip hole, and the diameter of the non-strip hole is greater than or equal to 0.1 mm and less than or equal to 0.8 mm; or The airway hole is a strip hole, and the width of the strip hole is greater than or equal to 0.1 mm and less than or equal to 0.8 mm.

6. The housing tube according to claim 1, characterized in that: The bottom wall also has a first through hole for the heating body to pass through, and a plurality of the airway holes are distributed in a circumferential direction around the first through hole.

7. The housing tube according to claim 6, characterized in that: The ratio of the total cross-sectional area of ​​all the airway holes to the cross-sectional area of ​​the bottom wall is 15%-60%; wherein the cross-sectional area of ​​the bottom wall does not include the cross-sectional area of ​​the first through hole.

8. An aerosol generating device, characterized in that: include: Shell assembly; A bracket, disposed in the housing assembly, having a mounting slot; A receiving tube is arranged in the installation groove and cooperates with the groove wall of the installation groove to form an air intake passage; a heating assembly, disposed in the housing assembly, for heating the aerosol generating product; Wherein, the housing tube is the housing tube as described in any one of claims 1-7.

9. The aerosol generating device according to claim 8, characterized in that: The aerosol generating device further comprises: An airway cover is arranged between the bottom wall of the receiving tube and the bottom wall of the mounting groove; the airway cover has a second through hole arranged corresponding to the first through hole of the receiving tube; Wherein, the heating component is arranged at the bottom of the installation groove, and the heating component includes a heating body; the heating body passes through the second through hole and the first through hole into the containing tube; the heating body contacts the hole wall of the second through hole.

10. The aerosol generating device according to claim 9, characterized in that The surface of the airway cover facing the bottom wall of the accommodating tube has a first annular protrusion surrounding the second through hole; the first annular protrusion surrounds the heating body and contacts the heating body; the bottom wall of the accommodating tube is supported by the first annular protrusion and is spaced apart from the airway cover; and / or The surface of the airway cover facing away from the bottom wall of the accommodating tube has a second annular protrusion surrounding the second through hole; the second annular protrusion surrounds the heating body and contacts the heating body.

11. The aerosol generating device according to claim 9, characterized in that: A distance between a surface of the bottom wall of the accommodating tube facing the airway cover and a surface of the airway cover facing the bottom wall of the accommodating tube is greater than or equal to 0.2 mm and less than or equal to 0.4 mm.

12. The aerosol generating device according to claim 11, characterized in that The surface of the airway cover facing the bottom wall of the accommodation tube and the outer surface of the bottom wall of the accommodation tube are both planes.

13. The aerosol generating device according to claim 9, characterized in that: The thermal conductivity of the airway cover is greater than the thermal conductivity of the bracket.

14. An aerosol generating system, characterized in that: include: An aerosol generating device as claimed in any one of claims 8 to 13; an aerosol generating product, at least partially inserted into the containing tube and abutting against a side surface of the limiting structure of the containing tube away from the bottom wall; A circumferential sealing structure is formed at least at one location between the inner wall surface of the containing tube and the outer wall surface of the aerosol generating article; The aerosol generating product, the bottom wall of the containing tube and part of the annular side wall form a closed condensation chamber, and the condensation chamber is connected with the air inlet channel through the airway hole.

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