CN218354629U - Aerosol generating device - Google Patents

Abstract

The utility model relates to an aerosol produces device, include: the main body comprises a heating cavity and an air flow channel, wherein the air flow channel comprises an air inlet communicated with the outside and an air outlet communicated with the heating cavity; and the liquid suction device is arranged in the air flow channel and is used for absorbing the liquid drops flowing into the air flow channel. The utility model can make the liquid drop flowing into the airflow channel absorbed by the liquid absorbing device, prevent the liquid drop from flowing out of the aerosol generating device, and play a role of cleaning; and meanwhile, the liquid drops are prevented from directly corroding the pipe wall of the airflow channel.

Description

Aerosol generating device

Technical Field

The utility model relates to an aerosol produces the field, especially relates to an aerosol produces device.

Background

In the related art, aerosol-generating devices (e.g., heated non-combustible aerosol-generating devices) include an air flow channel that can direct air outside the device into an aerosol-generating substrate.

However, aerosol generated by the aerosol-generating substrate may form droplets after condensation, and when the droplets accumulate to a certain amount, the droplets may flow out of the aerosol-generating device along the inner wall surface of the airflow channel under the action of gravity, which may cause poor user experience. Meanwhile, the condensed liquid drops remain on the inner wall surface of the air flow channel for a long time, which not only makes cleaning difficult, but also has the possibility of corroding the tube wall of the air flow channel.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an aerosol generating device after the improvement.

The utility model provides a technical scheme that its technical problem adopted is: an aerosol generating device comprising:

the main body comprises a heating cavity and an air flow channel, wherein the air flow channel comprises an air inlet communicated with the outside and an air outlet communicated with the heating cavity;

and the liquid suction device is arranged in the air flow channel and is used for absorbing the liquid drops flowing into the air flow channel.

Preferably, the liquid suction device is located relatively below the air outlet in the gravity direction.

Preferably, the liquid suction device is cylindrical and is embedded in the airflow channel along the axial direction.

Preferably, the wicking device includes a capillary structure, which is cylindrical and is axially embedded in the air flow channel.

Preferably, the capillary structure is formed using a porous ceramic, a porous metal, or a porous metal oxide.

Preferably, the wicking device further comprises a protective layer arranged on the periphery of the capillary structure, and the protective layer is arranged between the inner wall surface of the airflow channel and the capillary structure.

Preferably, the air flow passage is in a straight line shape and is longitudinally disposed in the main body.

Preferably, the airflow passage includes a first vent pipe and a fixing seat, one end of the first vent pipe, which is far away from the fixing seat, is communicated with the air inlet, one end of the fixing seat, which is far away from the first vent pipe, forms the air outlet, and the air outlet is communicated with the heating cavity.

Preferably, the wicking device is disposed in the first vent tube.

Preferably, the airflow channel comprises a first channel section and a second channel section connected with the first channel section, the first channel section is longitudinally arranged, and the second channel section is transversely arranged;

the air inlet is located the second passageway section is kept away from the one end of first passageway section, just imbibition device set up in the second passageway section.

Preferably, the heating cavity is located above the first passage section and is in communication with the first passage section.

Preferably, the main body includes a side end hole disposed on a peripheral side thereof, and the side end hole serves as the air inlet and is communicated with the second channel section.

Preferably, the air flow channel is L-shaped.

Preferably, the body further comprises a second tube section located below the heating chamber;

one end of the second pipe section, which is close to the heating cavity, is communicated with the heating cavity, and the end of the second pipe section, which is far away from the heating cavity, is a closed end; the wicking means is disposed in the second tube segment.

Preferably, the body comprises an aperture for insertion of a solid aerosol-generating substrate;

the airflow passage comprises a first airflow segment from the aperture along the inner periphery of the heating chamber to the second tube segment and a second airflow segment from the second tube segment to a solid aerosol-generating substrate disposed within the heating chamber.

Preferably, the wicking means comprises a first end and a second end opposite the first end; the first end is adjacent to the heating cavity, and the first end is provided with a groove which is sunken towards the direction of the second end.

Implement the utility model discloses following beneficial effect has: the liquid suction device is arranged in the airflow channel, so that liquid drops formed by condensation of aerosol on the pipe wall of the airflow channel can be absorbed by the liquid suction device, the liquid drops are prevented from flowing out of the aerosol generating device, and a cleaning effect is achieved; and meanwhile, the liquid drops are prevented from directly corroding the pipe wall of the airflow channel.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

figure 1 is a schematic diagram of an aerosol-generating device incorporating an aerosol-generating substrate according to some embodiments of the present invention;

FIG. 2 is a schematic longitudinal cross-sectional view of the aerosol generating device of FIG. 1;

figure 3 is a schematic view of the aerosol-generating device of figure 2 with the aerosol-generating substrate omitted;

FIG. 4 is an enlarged schematic view of the block A indicated in FIG. 2;

figure 5 is a schematic view of an aerosol-generating device incorporating an aerosol-generating substrate according to further embodiments of the present invention;

FIG. 6 is a schematic longitudinal cross-sectional view of the aerosol generating device of FIG. 5;

figure 7 is a schematic view of the aerosol-generating device of figure 6 with the aerosol-generating substrate omitted;

FIG. 8 is an enlarged view of the box B indicated in FIG. 6;

figure 9 is a schematic diagram of an aerosol-generating device incorporating an aerosol-generating substrate according to further embodiments of the present invention;

FIG. 10 is a schematic longitudinal cross-sectional view of the aerosol generating device of FIG. 9;

figure 11 is a schematic view of the aerosol-generating device of figure 10 with the aerosol-generating substrate and the wicking means omitted;

fig. 12 is a schematic view of the liquid absorbing device of the aerosol generating device of fig. 9 at an enlarged angle.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", and the like are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present technical solution, and do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.

It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

Figures 1 to 4 illustrate an aerosol-generating device in some embodiments of the invention, which may be a heated non-combustible aerosol-generating device, which may be used to heat a solid aerosol-generating substrate 200 to generate an aerosol for inhalation or inhalation by a user. In some embodiments, the aerosol-generating substrate 200 is a solid aerosol-generating substrate such as a treated plant leaf product. It will be appreciated that in other embodiments the aerosol-generating substrate 200 may also be a liquid aerosol-generating substrate.

As shown, the aerosol generating device may include a main body 100 having a flat column shape in some embodiments, and the main body 100 may include a heating tube 11, an air flow passage 2 communicating with the heating tube 11, and a heating device 4 surrounding the outer circumference of the heating tube 11. The aerosol-generating substrate 200 may be inserted into a heated tube 11 and heated and atomised by heating means 4. The airflow channel 2 serves to direct air from the environment external to the device into the aerosol-generating substrate 200.

It will be appreciated that the airflow channel 2 forms an airway with the interior of the aerosol-generating substrate 200 when the aerosol-generating substrate 200 is inserted in an aerosol-generating device. When a user performs a sucking or inhaling action, air in the external environment may be directed to flow through the air flow channel 2 into the heating tube 11 and then into the interior of the aerosol-generating substrate 200 provided in the aerosol-generating device; air flowing into the interior of the aerosol-generating substrate 200 may carry the generated aerosol towards the filter of the aerosol-generating substrate 200, where it is ultimately inhaled or inhaled by a user. The main body 100 further comprises a control device 5 and a power source 6. The power supply 6 is electrically connected with the heating device 4, and the control device 5 controls the power supply 6 to supply electric energy to the heating device 4; the heating device 4 generates heat after being energized.

As shown in fig. 2 and 3, the body 100 may in some embodiments comprise a top end 14 proximate to the aerosol-generating substrate 200, a bottom end 15 opposite the top end 14. The main body 100 is perforated at the top end 14 and the bottom end 15, respectively, i.e., includes a top end hole and a bottom end hole.

The heating tube 11 may be disposed at an interior location of the body 100 proximate the tip 14 in some embodiments. The heating tube 1 defines a heating chamber 111. The heating chamber 111 is in communication with the tip aperture such that a solid aerosol-generating substrate 200 can be inserted into the heating chamber 111 from the tip aperture.

The heating cavity 111 in some embodiments includes a first opening 1111 and a second opening 1112 opposite the first opening 1111. The first opening 1111 of the heating chamber 111 is disposed near the top end 14 and communicates with the top end hole, and the second opening 1112 is disposed below the first opening 1111.

The body 100 may in some embodiments be provided with a holder 12 below the heating pipe 11 and a first vent pipe 13 provided below the holder 12. The fixing base 12 may be cylindrical in some embodiments, and the top end thereof is embedded in the heating chamber 111 from the second opening 1112 of the heating chamber 111 for supporting the heating tube 11 and guiding the airflow into the heating chamber 111. The first vent pipe 13 is inserted into the lower end of the fixed seat 12, and is used for guiding gas into the fixed seat 12.

The first vent pipe 13 is a longitudinal tubular structure in some embodiments, and is disposed below the fixing base 12, and the top end of the first vent pipe is inserted into the bottom end of the fixing base 12 and is communicated with the central through hole of the fixing base 12, so as to be communicated with the heating pipe 11 through the fixing base 12. The bottom end of the first vent pipe 13 is disposed at the bottom end 15 of the main body 100, near the bottom end hole and communicated with the bottom end hole. In other words, the first vent pipe 13 connects the bottom hole to the fixing base 12.

It is understood that the bottom hole, the first vent pipe 13, the fixing seat 12 and the second opening 1112 are connected in series in sequence to form the air flow channel 2. The airflow channel 2 is longitudinally in-line and is coaxially disposed in the aerosol-generating substrate 200; the bottom hole can be used as the air inlet 22 of the air flow channel 2, and the second opening 1112 can be used as the air outlet 21 of the air flow channel 2. Air in the external environment enters the main body 100 through the bottom end hole and flows out to the heating chamber 111 through the second opening 1112. The airflow channel 2 forms a longitudinal in-line shaped air passage with the interior of the aerosol-generating substrate 200.

As shown in fig. 4, the main body 100 may further include a wicking device 3 in some embodiments, and the wicking device 3 is disposed on the first vent pipe 13 to absorb the condensate flowing into the first vent pipe 13 and prevent the condensate from flowing out of the main body 100. The pipetting device 3 may in some embodiments be cylindrical with an outer diameter adapted to the inner diameter of the first vent pipe 13 so that the pipetting device 3 may be embedded in the inner wall surface of the first vent pipe 13 in the axial direction of the first vent pipe 13. The length of the wicking device 3 is comparable to the length of the first vent tube 13 in some embodiments. It is understood that in other embodiments, the length of the wicking device 3 may be greater or less than the length of the first vent conduit 13.

The wicking means 3 may in some embodiments include a wicking structure 31 and a protective layer 32. The capillary structure 31 may be made of a porous body in some embodiments to adsorb liquid droplets flowing to the inner wall surface of the first vent pipe 13, so as to prevent the liquid droplets from flowing out of the main body 100 through the first vent pipe 13, thereby affecting the user experience. The protective layer 32 is bonded to the capillary structure 31 to isolate the capillary structure 31 from the inner wall surface of the first vent pipe 13, and prevent the liquid sucked by the capillary structure 31 from contacting the inner wall surface of the first vent pipe 13 for a long time to corrode the first vent pipe 13. In addition, the protective layer 32 can prevent the inner wall of the first air pipe 13 from being scratched when the capillary structure 31 is assembled and disassembled.

The protective layer 32 is formed by a silicone sleeve covering the outer surface of the capillary structure 31 in some embodiments, and can further seal the gap between the capillary structure 31 and the inner wall surface of the first air pipe 13 due to the soft material. In addition, the protective layer 32 is made of soft material, which can increase the allowable tolerance of the external dimension of the capillary structure 31. Capillary structure 31 may be cylindrical in some embodiments and include a first end 311 and a second end 312 opposite first end 311, where first end 311 and second end 312 may extend to upper and lower ends of first vent tube 13, respectively. In other words, the length of capillary structure 31 corresponds to the length of first ventilation pipe 13, and accordingly, the length of protective layer 32 also corresponds to the length of first ventilation pipe 13.

It can be understood that the liquid absorbing device 3 is detachably arranged in the air flow channel 2, and when the liquid drops absorbed in the liquid absorbing device 3 are more, the liquid absorbing device can be detached for replacement. In addition, the liquid absorbing device 3 can be applied to various forms of the air flow passage 2, with the object of absorbing liquid droplets that fall along the inner wall surface of the air flow passage 2, thereby preventing the liquid droplets from leaking out of the aerosol generation device or accumulating inside the aerosol generation device. The wicking means 3 is preferably disposed in the air flow passage 2 proximate the air inlet 22. Of course, the liquid suction device 3 may be disposed downstream of the droplet flow trajectory, for example, below the heating chamber 111, or below the air outlet 21 in the direction of gravity. The arrangement position of the capillary structure 31 can be adjusted according to actual requirements. The capillary structure 31 may be provided in one or more of the gas flow channels 2, and when the number is plural, the capillary structure may be arranged at intervals in the gas flow channels 2.

In some embodiments, the capillary structure 31 may be made of a material having a certain hardness and porosity, such as porous ceramic, porous metal or porous metal oxide, so as to absorb liquid and maintain a certain shape.

Referring to fig. 5 to 8, an aerosol generating device according to embodiment 2 of the present invention is shown. The main differences from the aerosol-generating device of example 1 above are: the main body 100 described above is replaced with a main body 100a, and the main body 100a includes an L-shaped air flow passage 2a.

As shown in fig. 6 and 7, the body 100a may in some embodiments comprise a top end 14a proximate to the aerosol-generating substrate 200, and a side end 15a disposed on a peripheral side of the body 100a. The main body 100a is opened at the top end 14a and the side end 15a with holes respectively, including a top end hole and a side end hole.

The body 100a may, in some embodiments, include a tubular body 12a disposed inwardly proximate the tip 14a, and a heat pipe 11a housed within the tubular body 12 a.

The tubular body 12a may include first and second longitudinally disposed tubular segments 121a and 122a, and a third tubular segment 123a in vertical communication with the second segment 122 a. The first pipe section 121a is coaxially located above the second pipe section 122a, and the pipe diameter of the first pipe section 121a is larger than that of the second pipe section 122a, so that a step 1211a capable of supporting the heating pipe 11a is formed at the intersection of the first pipe section 121a and the second pipe section 122 a. The heating pipe 11a is accommodated in the first pipe section 121a, stands on the step surface 1211a, and defines a heating cavity 111a inside the first pipe section 121a, wherein the heating cavity 111a is communicated with the second pipe section 122 a. One end of the second pipe section 122a close to the first pipe section 121a is used as the air outlet 21a of the air flow channel 2a, and one end of the second pipe section 122a far from the first pipe section 121a is vertically connected with the third pipe section 123a. The third tube segment 123a extends toward the side end aperture.

The body 100a, in some embodiments, further includes a sealing cover 16a embedded at the location of the side end hole. The sealing cover 16a is provided with a plurality of through holes for the air inlet 22a as the air flow path 2a. The sealing cover 16a is further provided with an extension tube 161a extending toward the inside of the main body 100, and the extension tube 161a is communicated with the third tube segment 123a.

The body 100a, in some embodiments, further includes a second vent tube 13a for communicating the extension tube 161a with the tubular body 12 a. The second vent pipe 13a can be sleeved on the inner wall surface of the third pipe section 123a along the axial direction of the third pipe section 123a, so that it forms a vent pipe between the second pipe section 122a and the extension pipe 161a in the third pipe section 123a. The end of the second vent pipe 13a far from the air inlet 22a is inserted into the third pipe segment 123a and is located in the second pipe segment 122a, and the end of the second vent pipe 13a near the air inlet 22a is located outside the third pipe segment 123a and extends to and is opposite to the extension pipe 161a, so that the extension pipe 161a is communicated with the second vent pipe 13a.

Preferably, the second vent tube 13a, the third tube segment 123a and the extension tube 161a are coaxially disposed.

Thus, the plurality of through holes of the sealing cover 16a, the extension pipe 161a, the second vent pipe 13a, and the second pipe section 122a are sequentially connected in series to form an L-shaped air flow passage 2a.

The air flow channel 2a may include a first channel section 23 and a second channel section 24 connected to the first channel section 23, wherein the first channel section 23 is disposed longitudinally, and the second channel section 24 is disposed transversely. As can be appreciated, the second tube segment 122a forms the first channel segment 23; the extension tube 161a and the second vent tube 13a form the second passage section 24.

Correspondingly, the air flow channel 2a forms an L-shaped air passage with the interior of the aerosol-generating substrate 200.

As shown in fig. 8, the main body 100a may further include a suction device 3a in some embodiments, the suction device 3a being disposed in the second vent pipe 13a to suck the condensate flowing into the second vent pipe 13a to prevent the condensate from flowing out of the main body 100a. The liquid suction device 3a may be cylindrical in some embodiments, and the outer diameter of the whole liquid suction device is matched with the inner diameter of the second vent pipe 13a, so that the liquid suction device 3a can be sleeved on the inner pipe wall surface of the second vent pipe 13a along the axial direction of the second vent pipe 13a. The length of the wicking means 3a is in some embodiments comparable to the length of the second vent tube 13a. It will be appreciated that in other embodiments, the length of the wicking device 3a may be greater or less than the length of the first vent conduit 13a.

In some embodiments the second vent 13a may be formed directly by the pipetting device 3a, that is to say without a sleeve outside the pipetting device 3a, which may simplify the overall structure. It can be understood that the user can set according to actual requirements.

The wicking means 3a may in some embodiments include a wicking structure 31a and a protective layer 32a. The capillary structure 31a may be made of a porous body in some embodiments to adsorb the liquid flowing to the inner wall surface of the second vent pipe 13a to prevent the liquid from flowing out of the main body 100a via the second vent pipe 13a. The protective layer 32a is bonded to the capillary structure 31a to isolate the capillary structure 31a from the inner wall surface of the second vent pipe 13a, thereby preventing the liquid sucked by the capillary structure 31a from contacting the inner wall surface of the second vent pipe 13a for a long time to corrode the second vent pipe 12 a. In addition, the protective layer 32a can prevent the inner wall of the second vent 13a from being scratched when the capillary structure 31a is assembled and disassembled.

The protective layer 32a is formed by a silicone sleeve disposed on the outer surface of the capillary structure 31a in some embodiments, and can further seal the gap between the capillary structure 31a and the inner wall surface of the second vent pipe 13a due to the soft material. In addition, the protective layer 32a is made of soft material, so that the allowable tolerance of the external dimension of the capillary structure 31a can be increased.

As shown in fig. 6, the capillary structure 31a may have a cylindrical shape in some embodiments, and includes a first end 311a and a second end 312a opposite to the first end 311a, and the first end 311a and the second end 312a may extend to both ends of the second vent pipe 13a, respectively. In other words, the length of the capillary structure 31a corresponds to the length of the second vent pipe 13a, and accordingly, the length of the protective layer 32a also corresponds to the length of the second vent pipe 13a.

Referring to fig. 9 to 12, an aerosol-generating device according to embodiment 3 of the present invention is shown. The main differences from the aerosol-generating device of example 1 above are: the main body 100 described above is replaced with a main body 100b, and an air flow passage 2b is formed in the main body 100 b. The airflow channel 2b may form a U-shaped airway with the aerosol-generating substrate 200 when the aerosol-generating substrate 200 is fitted to an aerosol-generating device.

The body 100b may in some embodiments comprise a tip 14b proximate to the aerosol-generating substrate 200. The body 100b defines a top hole at the top 14b.

The body 100b may, in some embodiments, include a tubular body 12b disposed internally proximate the tip 14b and a heat pipe 11b disposed within the tubular body 12 b.

As shown in fig. 10 and 11, the tubular body 12b may include a first tubular segment 121b and a second tubular segment 122b arranged longitudinally. The first tube segment 121b is a straight cylindrical passage extending in the longitudinal direction and disposed adjacent the top end 14b. The second pipe section 122b is located coaxially below the first pipe section 121b and communicates with the first pipe section 121 b; the second pipe section 122b has a smaller pipe diameter than the first pipe section 121b, so that a step 1211b is formed at the intersection of the first pipe section 121b and the second pipe section 122b. In addition, the end of the second tube segment 122b away from the first tube segment 121b is closed.

The heating pipe 11b is coaxially disposed in the first pipe segment 121b, and the bottom end of the heating pipe 11b is erected on the step surface 1211b. In some embodiments, the heating tube 11b is a longitudinally extending tubular structure defining a heating chamber 111b in the first tube segment 121b with a straight cylindrical passage. The heating cavity 111b is in communication with the top aperture and the second tube segment 122b, respectively. The aerosol-generating substrate 200 may be inserted through the top end aperture and placed in the heating chamber 111b.

The top aperture, heating cavity 111b and second tube segment 122b thereby form an air flow passage 2b. The airflow passage comprises a first airflow segment from the top end aperture along the inner periphery of the heating chamber to the second tube segment, and a second airflow segment from the second tube segment to the end face of the solid aerosol-generating substrate. The top hole can be used as the air inlet 22b of the air flow channel 2b, and the interface between the second pipe section 122b and the first pipe section 121b can be used as the air outlet 21b of the air flow channel 2b.

It will be appreciated that when the aerosol-generating substrate 200 is received in the heating chamber 111b and a user performs a sucking or inhalation action, external air flows in from the top orifice, through the gap between the heating chamber 111b and the aerosol-generating substrate 200 to the second tube segment 122b; the air at the second tube segment 122b flows from the bottom end of the aerosol-generating substrate 200 into the interior of the aerosol-generating substrate 200, eventually carrying the generated aerosol out of the mouthpiece of the aerosol-generating substrate 200 to be inhaled or inhaled by a user. Throughout the process, the airflow channel 2b forms a U-shaped airway with the interior of the aerosol-generating substrate 200.

As shown in fig. 10, the body 100b may further include a wicking device 3b in some embodiments, the wicking device 3b being disposed in the second tube segment 122b to draw condensate flowing into the second tube segment 122b. The wicking means 3b may be generally cylindrical in some embodiments, and the overall outside diameter of the wicking means is adapted to the inside diameter of the second pipe section 122b, so that the wicking means 3b can be sleeved on the inner pipe wall surface of the second pipe section 122b along the axial direction of the second pipe section 122b. The length of the wicking means 3b is in some embodiments less than the length of the second tube section 122b so that a distance is maintained between the wicking means 3b and the aerosol-generating substrate 200 to facilitate the inflow of air from the bottom end of the aerosol-generating substrate 200.

The wicking means 3b may in some embodiments include a wicking structure 31b and a protective layer 32b. The capillary structure 31b may be made of a porous body in some embodiments to adsorb the liquid flowing to the inner wall surface of the second pipe section 122b to prevent the liquid from accumulating in the second pipe section 122b. The protective layer 32b is bonded to the capillary structure 31b to isolate the capillary structure 31b from the inner wall surface of the second pipe section 122b, and prevent the liquid sucked by the capillary structure 31b from contacting the inner wall surface of the second pipe section 122b for a long time to corrode the second pipe section 122b. In addition, the protective layer 32b can prevent the inner wall of the second tube section 122b from being scratched when the capillary structure 31b is assembled and disassembled.

The protective layer 32b is formed by a silicone sleeve covering the outer surface of the capillary structure 31b in some embodiments, and can further seal the gap between the capillary structure 31b and the inner wall surface of the second tube segment 122b due to the soft material. In addition, the protective layer 32b is made of soft material, which can increase the allowable tolerance of the external dimension of the capillary structure 31 b. Preferably, the length of protective layer 32b also corresponds to the length of second pipe segment 122b.

As shown in fig. 12, the capillary structure 31b may be cylindrical in some embodiments and comprises a first end 311b and a second end 312b opposite the first end 311b, the first end 311b being adjacent to the heating cavity 111b, and a groove 313b recessed towards the second end 312b is provided at the first end 311b, the groove 313b increasing the volume through which air can flow and further facilitating the flow of air from the bottom end of the aerosol-generating substrate 200. The second end 312b abuts the end wall of the second tube section 122b remote from the first tube section 121 b.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (16)

1. An aerosol generating device, comprising:

the main body comprises a heating cavity and an air flow channel, wherein the air flow channel comprises an air inlet communicated with the outside and an air outlet communicated with the heating cavity;

and the liquid suction device is arranged in the air flow channel and is used for absorbing the liquid drops flowing into the air flow channel.

2. An aerosol generating device according to claim 1, wherein the wicking means is located relatively below the air outlet in the direction of gravity.

3. An aerosol generating device according to claim 1, wherein the wicking means is cylindrical and is axially embedded in the airflow passage.

4. An aerosol generating device according to claim 3, wherein the wicking means comprises a capillary structure which is cylindrical and axially embedded in the airflow passage.

5. An aerosol generating device according to claim 4, wherein the capillary structure is formed from a porous ceramic, a porous metal or a porous metal oxide.

6. An aerosol generating device according to claim 4 in which the wicking means further comprises a protective layer disposed around the periphery of the capillary structure, the protective layer being interposed between the inner wall surface of the airflow passage and the capillary structure.

7. An aerosol generating device according to claim 1, wherein the airflow passage is in-line and is disposed longitudinally in the body.

8. An aerosol generating device according to claim 7, wherein the airflow path comprises a first vent tube and a fixing base, wherein an end of the first vent tube remote from the fixing base is in communication with the air inlet, and an end of the fixing base remote from the first vent tube forms the air outlet, which is in communication with the heating chamber.

9. An aerosol generating device according to claim 8, wherein the wicking means is disposed in the first vent tube.

10. An aerosol generating device according to claim 1, wherein the airflow channel comprises a first channel section and a second channel section connected to the first channel section, the first channel section being arranged longitudinally and the second channel section being arranged transversely;

the air inlet is located the second passageway section is kept away from the one end of first passageway section, just imbibition device set up in the second passageway section.

11. An aerosol generating device according to claim 10, wherein the heating chamber is located above the first passage section and is in communication with the first passage section.

12. An aerosol generating device according to claim 11, wherein the body includes a side end aperture provided on a peripheral side thereof, the side end aperture serving as the air inlet and communicating with the second channel section.

13. An aerosol generating device according to claim 11, wherein the airflow channel is L-shaped.

14. An aerosol generating device according to claim 1, wherein the body further comprises a second tube segment located below the heating chamber;

one end of the second pipe section, which is close to the heating cavity, is communicated with the heating cavity, and the end of the second pipe section, which is far away from the heating cavity, is a closed end; the wicking means is disposed in the second tube segment.

15. An aerosol-generating device according to claim 14, wherein the body comprises an aperture into which a solid aerosol-generating substrate is inserted;

the airflow passage comprises a first airflow segment from the aperture along the inner periphery of the heating chamber to the second tube segment and a second airflow segment from the second tube segment to a solid aerosol-generating substrate disposed within the heating chamber.

16. An aerosol generating device according to claim 15, wherein the wicking means comprises a first end and a second end opposite the first end; the first end is adjacent to the heating cavity, and the first end is provided with a groove which is sunken towards the direction of the second end.

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