CN218551290U

CN218551290U - Aerosol generating system and aerosol generating device

Info

Publication number: CN218551290U
Application number: CN202222399682.0U
Authority: CN
Inventors: 郑松杰
Original assignee: Shenzhen Maishi Technology Co Ltd
Current assignee: Shenzhen Maishi Technology Co Ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-03-03
Anticipated expiration: 2032-09-08
Also published as: WO2024051262A1

Abstract

The utility model relates to an aerosol generating system and an aerosol generating device, the aerosol generating device comprises a heating body, an air flow channel and an air storage cavity, the heating body is provided with a heating cavity and is used for heating to heat an aerosol forming substrate accommodated in the heating cavity, and a gap is reserved between the heating body and the aerosol forming substrate; the gas storage cavity is arranged at one end of the aerosol-forming substrate, is communicated with the aerosol-forming substrate and is used for storing gas; the airflow channel is at least partially formed in a gap between the heating element and the aerosol forming substrate and is communicated with the air storage cavity. The aerosol generating device can enable external gas to flow into the aerosol forming substrate through the airflow channel and the gas storage cavity, so that a low-oxygen heating environment of the aerosol forming substrate is formed, and the aerosol generating device is favorable for improving the quality of the aerosol, the amount of the aerosol and the taste.

Description

Aerosol generating system and aerosol generating device

Technical Field

The present invention relates to a heating non-combustion apparatus, and more particularly, to an aerosol generating system and an aerosol generating apparatus.

Background

At present, most aerosol generating devices (i.e. heating non-combustion appliances) generally adopt a sheet type heating element, a needle type heating element or a periphery heating element. The aerosol generating device with the circumferential heating body is adopted, in the process of sucking the aerosol generating device, airflow enters from the substrate section of the aerosol forming substrate, and the airflow and the preheated aerosol of the aerosol forming substrate are mixed and then enter the oral cavity and the nasal cavity of a human body through the hollow section, the condensation section, the filtering section and the like. During the suction process, external air dynamically passes through the substrate section, so that the temperature of the substrate section is changed violently, the aerosol-forming substrate cracking reaction is unstable, the generated substance components are different, and the mouth feel of the suction is influenced; meanwhile, as the bottom of the aerosol-forming substrate is not closed, the residue after the suction can pollute appliances or heating equipment, and cause the problems of difficult cleaning, foreign flavor and the like.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the present invention is to provide an improved aerosol generating system and an aerosol generating device.

The utility model provides a technical scheme that its technical problem adopted is: constructing an aerosol generating device, which comprises a heating body, an air flow channel and a gas storage cavity, wherein the heating body is provided with a heating cavity and is used for heating an aerosol forming substrate accommodated in the heating cavity, and a gap is reserved between the heating body and the aerosol forming substrate; the gas storage cavity is arranged at one end of the aerosol-forming substrate, is communicated with the aerosol-forming substrate and is used for storing gas; the airflow channel is at least partially formed in a gap between the heating body and the aerosol-forming substrate and communicated with the gas storage cavity.

In some embodiments, the heating element is in a cylindrical shape, and at least part of the airflow channel extends to the air storage cavity along the axial direction of the heating element.

In some embodiments, the heating element has a cross-sectional dimension greater than a cross-sectional dimension of the aerosol-forming substrate.

In some embodiments, the heat-generating body has a cross section including a long side; the airflow channels are formed at both ends of the long side.

In some embodiments, the aerosol-forming substrate is cylindrical,

the heating element comprises a short side, and the size of the short side is smaller than or equal to the diameter of the aerosol forming substrate.

In some embodiments, a support structure supporting the heat generating body;

the support structure comprises a first support for supporting the heating body;

the air storage cavity is formed in the first support.

In some embodiments, the first holder comprises a receiving cavity to receive a portion of the aerosol-forming substrate;

the gas storage cavity is formed in the accommodating cavity and is located at one end of the aerosol-forming substrate.

In some embodiments, the aerosol-forming substrate is cylindrical,

the cross section of the heating element is oval, and the size of the long axis of the heating element is larger than the diameter of the aerosol forming substrate;

and/or the cross section of the accommodating cavity is oval, and the size of the long axis of the accommodating cavity is larger than the diameter of the aerosol-forming substrate.

In some embodiments, the first support comprises at least two support bosses spaced apart in the receiving cavity for supporting the aerosol-forming substrate.

In some embodiments, the first holder comprises a barrel having a plug port; the accommodating cavity is formed in the cylinder body;

the cylinder body comprises a bottom wall arranged opposite to the plugging port and a side wall arranged on the bottom wall;

the support boss is disposed on the bottom wall and/or on the side wall.

In some embodiments, the air reservoir is formed at a central axis of the barrel;

the at least two supporting bosses are arranged at intervals along the circumferential direction of the air storage cavity; and the interval between two adjacent supporting bosses forms an air guide groove communicated with the air flow channel and the air storage cavity.

In some embodiments, the first holder includes a plug port, and the plug port is communicated with the accommodating cavity;

the first support is provided with a support table, and the support table is arranged at one end of the accommodating cavity and close to the plugging port and is used for supporting the heating body.

In some embodiments, the support structure further includes a second support disposed on the first support and sleeved on the periphery of the heating element.

In some embodiments, the first mount is snap-fit to the second mount.

In some embodiments, the second support is a through structure with two ends, the first support is located at one end of the second support, and a fixing cover is arranged at one end of the second support, which is far away from the first support, and is sleeved at one end of the aerosol-forming substrate;

the airflow channel is formed at least partially between the stationary lid and the aerosol-forming substrate.

In some embodiments, an inner wall surface of the fixing cap is provided with an intake duct communicating with the outside.

In some embodiments, the securing cap is oval in cross-section.

In some embodiments, the volume of the gas reservoir is greater than one tenth of the volume of the substrate segment of the aerosol-forming substrate.

In some embodiments, the volume of the gas reservoir is one third to one half of the volume of the substrate segment of the aerosol-forming substrate.

In some embodiments, further comprising an induction coil cooperating with the heat generating body, the heat generating body generating heat in a changing magnetic field generated by the induction coil.

The utility model also constructs an aerosol generating system, which comprises an aerosol forming substrate and the aerosol generating device;

the aerosol-forming substrate portion is inserted into the aerosol-generating device.

In some embodiments, the aerosol-forming substrate comprises a hollow section, the wall of which is provided with airflow through holes communicating with the outside.

Implement the utility model discloses an aerosol production system and aerosol generate device has following beneficial effect: this aerosol generating device forms between heat-generating body and aerosol formation base member through at least part of airflow channel, and the one end that is located this aerosol formation base member forms in the gas storage chamber that this aerosol formation base member and airflow channel switched on, and then can make during external gas flows into aerosol formation base member through airflow channel and through the gas storage chamber to form the low oxygen heating environment of aerosol formation base member, be favorable to promoting the aerosol quality, promote aerial fog volume, improve the taste.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic view of a first embodiment of an aerosol generating system according to the present invention;

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

FIG. 3 is another longitudinal cross-sectional view of the aerosol generating system of FIG. 1;

FIG. 4 is a transverse cross-sectional view of the aerosol generating system of FIG. 1;

fig. 5 is another transverse cross-sectional view of the aerosol generating system of fig. 1;

FIG. 6 is a schematic diagram of a heater of the aerosol generating device in the aerosol generating system of FIG. 2;

FIG. 7 is a partial cross-sectional view of an aerosol generating device of the aerosol generating system of FIG. 2;

FIG. 8 is a schematic view of a portion of the aerosol generating device of the aerosol generating system of FIG. 2;

FIG. 9 is a schematic view of a first support of the aerosol generating device of the aerosol generating system of FIG. 8;

FIG. 10 is a schematic view of a retaining cap of the aerosol generating device of the aerosol generating system of FIG. 8;

FIG. 11 is a schematic view of the airflow profile of the aerosol generating system of FIG. 2;

FIG. 12 is a schematic view of an aerosol-forming substrate configuration of the aerosol-generating system of FIG. 1;

figure 13 is a longitudinal cross-sectional view of the aerosol-forming substrate of figure 13;

figure 14 is a longitudinal cross-sectional view of a second embodiment of an aerosol generating system according to the present invention;

fig. 15 is a schematic view of a first support of the aerosol generating device of the aerosol generating system of fig. 14.

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.

Figure 1 shows a first embodiment of an aerosol-forming system according to the invention. The aerosol-forming system comprises the aerosol-generating device 100 and an aerosol-forming substrate 200. The aerosol-generating device 100 may heat the aerosol-forming substrate 200 in a low temperature heat non-combustible manner. In some embodiments, the aerosol-forming substrate 200 may be cylindrical, in particular, the aerosol-forming substrate 200 may be a solid material in the form of a strand or sheet made from the leaves and/or stems of a plant, and aroma components may be further added to the solid material. In some embodiments, the aerosol-forming substrate 200 may be inserted on the aerosol-generating device 100, the aerosol-generating device 100 having the advantages of simple structure, good aerosol quantity, high comfort in use, and high user experience.

As shown in fig. 1 to 3, in the present embodiment, the aerosol generating device 100 includes a housing 10, a receiving assembly 20, a heat generating assembly 30, and a supporting structure 40. The housing 10 is disposed around the housing assembly 20 to protect and make the whole aerosol generating device 100 more beautiful. The receiving module 20 is used for receiving the heat generating module 30 and the supporting structure 40. The heat generating component 30 is disposed in the receiving component 20, and is used for heating the aerosol-forming substrate 200 to generate aerosol for a user to suck. The supporting structure 40 is disposed in the receiving assembly 20 and is used for supporting the heat generating assembly 30 and the aerosol-forming substrate 200.

In the present embodiment, the housing 10 includes a first case 11 and a second case 12. The first housing 11 and the second housing 12 are of a similar shape and size. The first housing 11 is disposed on one side of the accommodating component 20, the second housing 12 is disposed on the other side of the accommodating component 20, and the first housing 11 and the second housing 12 can be disposed opposite to each other.

In the present embodiment, the accommodating component 20 includes a bracket 21 and a top cover 22. The bracket 21 is disposed in the housing 10 and is used for supporting components such as the supporting structure 40, the power supply module, and the circuit board. The bracket 21 includes a first bracket body 211 and a second bracket body 212 spliced with the first bracket body 211, and the first bracket body 211 and the second bracket body 212 are clamped. A first cavity 21a and a second cavity 21b are formed between the first frame 211 and the second frame 212, the first cavity 21a and the second cavity 21b can be disposed side by side, wherein the first cavity 21a can be used for accommodating the supporting structure 40. The second cavity 21b can be used for accommodating a power supply component. The top cover 22 is disposed at one end of the bracket 21, and specifically, the top cover 22 is disposed close to the first cavity 21a and is clamped with the first housing 11 and the second housing 12. The overcap 22 is provided with a fitting opening 221 for insertion of the aerosol-forming substrate 200.

As shown in fig. 4 and 6, in the present embodiment, the heating element 30 includes a heating element 31 and an induction coil 32. The heating element 31 is disposed in the support structure 40, and is in a column shape, and has a hollow structure with two ends penetrating through or a hollow structure with one end open and the other end closed. The heating element 31 may be provided around the aerosol-forming substrate 200, may be provided in the substrate section 201 of the aerosol-forming substrate 200, and may be heated from the periphery of the aerosol-forming substrate 200. The induction coil 32 is sleeved on the periphery of the support structure 40, is located at a position of the support structure 40 corresponding to the heating element 31, and can cooperate with the heating element 31 to form electromagnetic heating in a power-on state, specifically, the induction coil 32 generates a variable magnetic field, and the heating element 31 generates heat in the variable magnetic field, so as to heat the aerosol-forming substrate 200. It will be appreciated that in other embodiments the induction coil 32 may be omitted and the heat generating component 30 is not limited to heating the aerosol-forming substrate 200 by electromagnetic heating, and in other embodiments the heat generating component 30 may also heat the aerosol-forming substrate 200 by resistive heating.

Specifically, in the present embodiment, the cross-sectional dimension of the heat-generating body 31 may be larger than the cross-sectional dimension of the aerosol-forming substrate 200, and a gap is left between the heat-generating body 31 and the aerosol-forming substrate 200 when the heat-generating body 31 is fitted over the outer periphery of the aerosol-forming substrate 200. The cross section of the heating element 31 may be elliptical. Of course, it is understood that in other embodiments, the cross section of the heating element 31 is not limited to be oval, and may be rectangular square or other shapes. In the present embodiment, the cross section of the heat-generating body 31 may include a major axis and a minor axis (i.e., including a long side and a short side), the major axis of the heat-generating body 31 may be larger than the diameter size of the aerosol-forming substrate 200, and the minor axis of the heat-generating body 31 may correspond to the diameter of the aerosol-forming substrate 200. Of course, it will be appreciated that in other embodiments, the short axis of the heater 31 may be slightly smaller than the diameter of the aerosol-forming substrate 200. When the heating element 31 is fitted over the aerosol-forming substrate 200, a gap is left between both ends of the long axis of the heating element 31 and the aerosol-forming substrate 200. The side walls 4112 at the two ends of the short shaft of the heating body 31 can clamp the aerosol forming substrate 200, so that the aerosol forming substrate 200 can be fixed, the heat conduction efficiency is improved, and the baking effect of the aerosol forming substrate 200 is improved.

In this embodiment, the heating element 31 includes a first opening 311 and a second opening 312, and the first opening 311 and the second opening 312 are respectively positioned at both ends of the heating element 31 and are provided to penetrate therethrough. A heating chamber 310 is formed inside the heating element 31, and the heating chamber 310 is used for generating heat to heat the aerosol-forming substrate 200 accommodated in the heating chamber 310. The first opening 311 may be disposed proximate the top cover 22, and the second opening 312 is disposed opposite the first opening 311. When the heating element 31 is assembled with the aerosol-forming substrate 200, the aerosol-forming substrate 200 may be inserted from the first opening 311 toward the second opening 312.

As shown in fig. 5, 7 to 10, in the present embodiment, the supporting structure 40 includes a first support 41 and a second support 42. The first support 41 is mounted on the stopper 21c between the first cavity 21a and the second cavity 21b, is located at one end of the second support 42, and supports the second support 42, the heating element 31, and the aerosol-forming substrate 200. The second support 42 is sleeved on a portion of the first support 41, is coaxial with the first support 41, and is clamped with the first support 41. The second support 42 can be sleeved on the periphery of the heating element 31 for supporting the induction coil 32.

In this embodiment, the first holder 41 includes a cylinder 411; the cylinder 411 has a plug port 415 and is hollow. The barrel 411 may include a bottom wall 4111 and a side wall 4112 disposed on the bottom wall 4111 and extending along the circumference of the bottom wall 4111. The bottom wall 4111 and the side wall 4112 enclose a containing cavity 412, that is, the containing cavity 412 is formed in the cylinder 411, the containing cavity 412 is used for containing a part of the aerosol-forming substrate 200, and the inserting and extracting port 415 is communicated with the containing cavity 412 and used for inserting the aerosol-forming substrate 200 into the containing cavity 412. In this embodiment, the cross-section of the accommodating chamber 412 may be an ellipse, and the size of the major axis of the accommodating chamber 412 is larger than the diameter of the aerosol-forming substrate 200, that is, a gap is formed between the side walls 4112 at two ends of the major axis of the accommodating chamber 412 and the outer wall of the aerosol-forming substrate 200. The size of the minor axis of the receiving cavity 412 may be slightly less than or equal to the diameter of the aerosol-forming substrate 200. It is understood that in other embodiments, the cross-section of the receiving cavity 412 is not limited to being oval, but may also be circular, rectangular, square, or other shapes.

The aerosol-forming device further comprises a gas reservoir 4120. The gas storage cavity 4120 is formed in the accommodating cavity 412, located at the central axis of the cylinder 411, and located at one end of the aerosol-forming substrate 200, and is configured to be in communication with the aerosol-forming substrate 200. In some embodiments, the volume of the gas reservoir 4120 is greater than one tenth of the volume of the substrate segment 201 of the aerosol-forming substrate 200. In particular, in some embodiments, the volume of the gas reservoir 4120 may be one third to one half of the volume of the substrate segment 201 of the aerosol-forming substrate 200, and optionally the volume of the gas reservoir 4120 may be two fifths of the volume of the substrate segment 201 of the aerosol-forming substrate 200. This gas storage chamber 4120 is used for storing gas to be favorable to forming low oxygen heating environment, and then be favorable to promoting the aerosol quality, promoting aerial fog volume and improve the aerosol taste. The gas in the gas reservoir 4120 may be preheated by the heating element 31 and then enter the aerosol-forming substrate 200 from the end of the aerosol-forming substrate 200. By preheating the gas in the gas reservoir 4120, the temperature of the gas in the gas reservoir 4120 may be made higher relative to the temperature of the ambient air, and when the user draws in, the preheated gas flows into the aerosol-forming substrate 200, which has a better taste than if the ambient air was not preheated and directly entered into the aerosol-forming substrate 200.

In this embodiment, the first support 41 further includes two support bosses 413, and the two support bosses 413 are spaced apart from each other in the accommodating cavity 412 and spaced apart from each other along the circumferential direction of the air storage cavity 4120, and are used for supporting the aerosol-forming substrate 200. In the present embodiment, the two supporting bosses 413 are disposed at two ends of a short axis of the cross section of the accommodating cavity 412, and an extension length of each supporting boss 413 in the short axis direction of the first support 41 is smaller than a half of a size of the end axis. The height of the support boss 413 may be less than the depth of the receiving cavity 412. The supporting bosses 413 may be disposed on the bottom wall 4111 and the side wall 4112 and protrude toward the accommodating cavity 412. The air reservoir 4120 may be formed in the middle of the two support bosses 413. The space between the two support bosses 413 may form an air guide groove 416 for guiding the air flow into the air storage chamber 4120. It is understood that, in other embodiments, the number of the supporting bosses 413 is not limited to two, and may be more than two. In other embodiments, when the receiving cavity 412 has a circular cross-section, each supporting protrusion 413 extends in a radial direction of the receiving cavity 412 for a length less than a radius of the receiving cavity 412.

In this embodiment, the first support 41 further includes a latch 417, where the latch 417 is disposed near the insertion and extraction opening 415, and is disposed on the outer sidewall 4112 of the cylinder 411, and protrudes along the outer side of the cylinder 411, and is used for being latched with the second support 42. The first supporting base 41 further includes a clamping table 418, and the clamping table 418 is disposed near the bottom wall 4111 of the barrel 411, is located on the outer side wall 4112 of the barrel 411, and protrudes along the outer side of the barrel 411, and is used for being clamped with the blocking table 21c of the bracket 21.

In the present embodiment, the second support 42 is a cylindrical structure with two ends penetrating through, and is sleeved on one end of the first support 41. The second support 42 is provided with a first fastening hole 421, the first fastening hole 421 is disposed corresponding to the fastening 417, and when the second support 42 is assembled with the first support 41, the fastening 417 can be fastened into the first fastening hole 421, so as to fasten the first support 41 to the second support 42. The second support 42 is provided with a second fastening hole 422, and the second fastening hole 422 is used for being clamped with the fixing cover 43.

In this embodiment, the support structure 40 further comprises a stationary cover 43. The fixing cover 43 is disposed on an end of the second support 42 away from the first support 41, and is disposed coaxially with the second support 42. Specifically, the fixing cover 43 may be partially snapped into the second holder 42 for cooperating with the first holder 41 to limit and fix the heating element 31. In this embodiment, the fixing cap 43 may be sleeved on one end of the aerosol-forming substrate 200, and may have a gap with the outer wall surface of the aerosol-forming substrate 200. The fixing cap 43 has a columnar structure with both ends penetrating therethrough, and has a through hole formed therein coaxially with the mounting hole 221 and the heating element 31 for passing a part of the aerosol-forming substrate 200 therethrough. The cross section of the fixing cap 43 may be oval, and the size of the long axis of the fixing cap 43 may be larger than the diameter of the aerosol-forming substrate 200, that is, a gap is left between the wall surface corresponding to the two ends of the long axis of the fixing cap 43 and the outer wall of the aerosol-forming substrate 200. In some embodiments, the fixing cover 43 includes an insertion portion 431 and a connection portion 432. The fitting portion 431 is fitted from one end of the second holder 42, and is used for positioning and fixing the heating element 31. The connecting portion 432 is disposed at one end of the insertion portion 431, and has a cross-sectional size smaller than that of the insertion portion 431, for connecting and fixing with the guide structure 60 of the sliding cover 50 covering the assembling opening 221. In some embodiments, the inner wall surface of the fixing cap 43 is provided with an air inlet groove 433, and the air inlet groove 433 is connected to the outside for allowing outside air to enter between the heating body 31 and the aerosol-forming substrate 200. This air inlet groove 433 can be a plurality of, and this a plurality of air inlet groove 433 can set up along the circumference interval of fixed lid 43, and this air inlet groove 433 can be the bar groove, can follow the axial extension of fixed lid 43. In some embodiments, the fixing cover 43 is provided with a snap-fit rib 434, and the snap-fit rib 434 is provided on an outer side wall 4112 of the embedding portion 431 for being matched and clamped with the second fastening hole 422 of the second support 42.

As further shown in fig. 7, in the present embodiment, the aerosol-generating device 100 further includes a sliding cover 50 and a guiding structure 60 engaged with the sliding cover 50. The sliding cover 50 is slidably disposed on the top cover 22, and can cover the assembling opening 221 of the top cover 22 by sliding. The guiding structure 60 is disposed in the top cover 22, connected to the sliding cover 50, and used for guiding the sliding cover 50 to slide. In some embodiments, the guide structure 60 includes a guide bracket 61 and a guide slider 62. The guide bracket 61 is provided at one end of the bracket 21 and detachably assembled with the bracket 21. The guide bracket 61 is provided with a through hole 611 provided coaxially with the through hole of the fixed cover 43 and the fitting hole 221 of the top cover 22. In this embodiment, the guide bracket 61 is provided with a guide rail 612 on which the guide slider 62 slides. The guide slider 62 is connected to the slide cover 50, slidably disposed on the guide bracket 61, slidably disposed along the guide rail 612, and has a gap with the guide bracket 61, and the gap is communicated with the outside.

As shown in fig. 11, in the present embodiment, the aerosol-generating device 100 further includes an airflow channel 70. The air flow passage 70 may be partially formed between the heating body 31 and the aerosol-forming substrate 200 and extend to the gas reservoir 4120 in the axial direction of the heating body 31, communicate with the gas reservoir 4120, for the external air to enter the gas reservoir 4120 and be stored in the gas reservoir 4120. Of course, it will be appreciated that in other embodiments, the airflow channel 70 may be integrally formed between the heat-generating body 31 and the aerosol-forming substrate 200. Specifically, in the present embodiment, the air flow passage 70 includes a first air intake passage 71 and a second air intake passage 72, wherein the first air intake passage 71 is formed in a gap between the guide bracket 61 and the guide slider 62 and communicates with the outside. The second air inlet passage 72 is communicated with the first air inlet passage 71, and is formed in a gap between the fixing cap 43 and the aerosol-forming substrate 200 and a gap between the heating element 31 and the aerosol-forming substrate 200, specifically, the number of the second air inlet passages 72 may be two, and the two second air inlet passages 72 may be formed at both ends of a long axis of a cross section of the heating element 31. The second intake passage 72 may extend to the air reservoir chamber 4120 and communicate with the air reservoir chamber 4120. The external air may sequentially enter the second air inlet passage 72 through the first air inlet passage 71 and then enter the air storage chamber 4120, be stored in the air storage chamber 4120, and may be preheated by the heating body 31 and then be fed into the aerosol-forming substrate 200.

As shown in fig. 12-13, the aerosol-forming substrate 200 is partially inserted into the aerosol-generating device 100 and heated by the aerosol-generating device 100 to generate an aerosol. In this embodiment, the aerosol-forming substrate 200 is generally cylindrical in shape and comprises a substrate segment 201, a hollow segment 202 and a filter segment 203 arranged in this order. Wherein the substrate segment 201 is insertable into the aerosol-forming device, in particular, the substrate segment 201 is partially insertable into the receiving cavity 412 of the first holder 41. The heating element 31 may be disposed around at least a portion of the substrate segment 201. The hollow section 202 is partially exposed out of the aerosol generating device 100, and the wall surface of the hollow section 202 is provided with an airflow through hole 2021, and the airflow through hole 2021 can communicate with the outside. In this embodiment, the air flow holes 2021 may be multiple, the air flow holes 2021 may be disposed along the circumference of the hollow section 202, and the air flow holes 2021 only allow the external air flow to flow in the radial direction of the hollow section 202, and may assist in forming an oxygen-free heating environment for the heating substrate section 201 during the suction process.

Figures 14 to 15 show a second embodiment of the aerosol generating system of the present invention which differs from the first embodiment. The receiving cavity 412 of the first support 41 may be substantially circular in cross-section and may have a radial dimension slightly larger than a radial dimension of the aerosol-forming substrate 200. The number of the support bosses 413 in the first support 41 is not limited to two, and may be six, and the six support bosses 413 may be arranged in a quincunx shape, so as to form a plurality of air guide grooves 416. The support boss 413 may include a first support boss 413 and a second support boss 413. The number of the first supporting bosses 413 may be two, and the two first supporting bosses 413 may be symmetrically and alternately arranged along the radial direction of the accommodating cavity 412. The number of the second supporting bosses 413 is four, and two of the second supporting bosses are distributed on two opposite sides of the two first supporting bosses 413. The first supporting protrusion 413 can be connected to the sidewall 4112 of the cylinder 411, and a gap is left between the second supporting protrusion 413 and the sidewall 4112 of the cylinder 411. In this embodiment, the first support 41 further includes a support base 419, the support base 419 is used for supporting the barrel 411, and the locking platform 418 is disposed on the support base 419 to lock with the blocking platform 21 c.

It should be understood that the above examples only represent the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but should not be construed as limiting the scope of the present 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

1. An aerosol-generating device comprising a heating element (31), an air flow passage (70), and a gas storage chamber (4120), wherein the heating element (31) is formed with a heating chamber (310) and is configured to generate heat to heat an aerosol-forming substrate (200) accommodated in the heating chamber (310), and a gap is provided between the heating element (31) and the aerosol-forming substrate (200); the gas storage cavity (4120) is arranged at one end of the aerosol-forming substrate (200) and is communicated with the aerosol-forming substrate (200); the airflow passage (70) is formed at least partially in a gap between the heat generating body (31) and the aerosol-forming substrate (200) and communicates with the gas reservoir (4120).

2. An aerosol-generating device according to claim 1, wherein the heat-generating body (31) has a columnar shape, and at least a part of the air flow passage (70) extends to the air reservoir chamber (4120) in an axial direction of the heat-generating body (31).

3. An aerosol-generating device according to claim 1 in which the heating body (31) has a cross-sectional dimension greater than the cross-sectional dimension of the aerosol-forming substrate (200).

4. An aerosol-generating device according to claim 1, wherein the cross-section of the heat-generating body (31) comprises a long side; the air flow channel (70) is formed at both ends of the long side.

5. An aerosol-generating device according to claim 1 in which the aerosol-forming substrate (200) is cylindrical,

the heating element (31) comprises a short side, the size of which is smaller than or equal to the diameter of the aerosol-forming substrate (200).

6. An aerosol-generating device according to claim 1, further comprising a support structure (40) supporting the heat-generating body (31);

the support structure (40) includes a first holder (41) that supports the heating body (31);

the air reservoir chamber (4120) is formed in the first seat (41).

7. An aerosol-generating device according to claim 6 in which the first seat (41) comprises a receiving cavity (412) that receives a portion of the aerosol-forming substrate (200);

the gas reservoir (4120) is formed in the receiving cavity (412) at one end of the aerosol-forming substrate (200).

8. An aerosol-generating device according to claim 7 in which the aerosol-forming substrate (200) is cylindrical,

the cross section of the heating element (31) is oval, and the size of the long axis of the heating element (31) is larger than the diameter of the aerosol forming substrate (200);

and/or the receiving cavity (412) has an elliptical cross-section, and the size of the major axis of the receiving cavity (412) is larger than the diameter of the aerosol-forming substrate (200).

9. An aerosol-generating device according to claim 7 in which the first support (41) comprises at least two support bosses (413), at least two of the support bosses (413) being provided spaced apart in the receiving cavity (412) for supporting the aerosol-forming substrate (200).

10. An aerosol-generating device according to claim 9 in which the first seat (41) comprises a barrel (411) having a plug-in opening (415); the accommodating cavity (412) is formed in the cylinder (411);

the barrel (411) comprises a bottom wall (4111) arranged opposite to the plugging port (415) and a side wall (4112) arranged on the bottom wall (4111);

the support projection (413) is arranged on the bottom wall (4111) and/or on the side wall (4112).

11. An aerosol-generating device according to claim 10 in which the gas reservoir (4120) is formed at the central axis of the cartridge (411);

at least two support bosses (413) are arranged at intervals along the circumferential direction of the air storage cavity (4120); the interval between two adjacent support bosses (413) forms an air guide groove (416) communicated with the air flow channel (70) and the air storage cavity (4120).

12. An aerosol-generating device according to claim 9, wherein the first seat (41) comprises a plug opening (415), the plug opening (415) communicating with the housing chamber (412);

the first support (41) is provided with a support table, the support table is arranged at one end of the accommodating cavity (412), is close to the plugging port (415), and is used for supporting the heating body (31).

13. An aerosol generating device according to claim 6, wherein the support structure (40) further comprises a second support (42) provided on the first support (41) and fitted around the outer periphery of the heat generating body (31).

14. An aerosol-generating device according to claim 13 in which the first abutment (41) is a snap fit with the second abutment (42).

15. An aerosol-generating device according to claim 13 in which the second support (42) is a two-end through structure, the first support (41) is located at one end of the second support (42), a fixing cap (43) is provided at an end of the second support (42) remote from the first support (41), and the fixing cap (43) is fitted over one end of the aerosol-forming substrate (200);

the air flow channel (70) is at least partially formed between the stationary lid (43) and the aerosol-forming substrate (200).

16. An aerosol-generating device according to claim 15 in which the inner wall surface of the fixing cap (43) is provided with an air inlet channel (433) communicating with the outside.

17. An aerosol generating device according to claim 15, wherein the securing cap (43) is oval in cross-section.

18. An aerosol-generating device according to claim 1 in which the volume of the gas reservoir (4120) is greater than one tenth of the volume of the substrate segment (201) of the aerosol-forming substrate (200).

19. An aerosol-generating device according to claim 1 in which the volume of the gas reservoir (4120) is one third to one half of the volume of the substrate segment (201) of the aerosol-forming substrate (200).

20. An aerosol generating device according to claim 1, further comprising an induction coil (32) cooperating with the heating body (31), the heating body (31) generating heat in a varying magnetic field generated by the induction coil (32).

21. An aerosol-generating system comprising an aerosol-forming substrate (200) and an aerosol-generating device (100) according to any of claims 1 to 20;

the aerosol-forming substrate (200) is partially inserted into the aerosol-generating device (100).

22. An aerosol-generating system according to claim 21, wherein the aerosol-forming substrate (200) comprises a hollow section (202), a wall of the hollow section (202) being provided with an air flow through hole (2021) communicating with the outside.