CN220274889U - Aerosol generating device and aerosol generating system - Google Patents

Abstract

The present utility model provides an aerosol-generating device for heating an aerosol-generating article (1), the aerosol-generating article (1) having an aerosol-substrate (11) therein capable of generating an aerosol upon exposure to heat, the aerosol-generating device comprising: a sleeve (3) provided with an opening (32) for at least partial access of the aerosol-generating article (1) into the interior of the sleeve (3), and with a shoe (33) located below the opening (32); and a vent tube (7) fixed to the shoe (33), and at least part of the vent tube (7) being arranged in the sleeve (3) for insertion into the aerosol-generating article (1); wherein the vent tube (7) is configured to provide an air inlet passage for external air in fluid communication with the aerosol-generating article (1), and wherein the outlet aperture (72) in the vent tube (7) is disposed substantially adjacent the upper end of the aerosol-substrate (11).

Description

Aerosol generating device and aerosol generating system

Technical Field

The present utility model relates to the field of aerosol generation technology, and more particularly, to an aerosol generation device and an aerosol generation system.

Background

The cigarette generally includes an aerosol substrate and a cooling section positioned between the aerosol substrates, the cooling section having a cavity therein capable of providing a passageway for the aroma generated by the aerosol substrates to enter. Ambient air typically enters the cigarette from the bottom of the cigarette or from the cooling section of the cigarette. When the user sucks, the aroma generated by the aerosol matrix is mixed with the external air entering from the outside, and finally the mixture is sucked into the mouth of the user. Aerosol substrates need to be able to produce aerosols at a certain high temperature, however, when the aerosol substrate in the cigarette is in an oxygen-rich environment, the cigarette is prone to problems of burning or burning at high temperatures and thus release off-flavors.

Disclosure of Invention

The utility model provides an aerosol generating device and an aerosol generating system, which can prevent the problems of baking and burning of aerosol substrates.

An embodiment of the present utility model provides an aerosol-generating device for heating an aerosol-generating article having an aerosol-substrate therein that is heated to generate an aerosol, the aerosol-generating device comprising:

a sleeve provided with an opening for at least partial access of the aerosol-generating article into the interior of the sleeve, and a shoe located below the opening; and

a vent tube secured to the shoe and at least partially disposed in the sleeve for insertion into the aerosol-generating article;

wherein the vent tube is configured to provide an air inlet passage for ambient air in fluid communication with the aerosol-generating article, and the air outlet aperture on the vent tube is disposed substantially adjacent the upper end of the aerosol-substrate.

In one embodiment, the vent tube extends more than 1/2 of the length of the aerosol matrix inside the sleeve; or alternatively

The minimum distance between the air outlet hole and the bottom support is larger than or equal to 6mm; or alternatively

The ratio of the length of the upper end region to the extension of the vent tube inside the sleeve is less than 1/2.

In an embodiment, the aerosol-generating article further has an airflow cavity and a filter therein, the airflow cavity being disposed between the aerosol-substrate and the filter to provide a passage for aerosol into the filter;

when the aerosol-generating article is received in the sleeve, a portion of the vent tube extends into the airflow chamber and at least one of the air outlet holes is located in the airflow chamber.

In one embodiment, the maximum spacing between the upper end of the aerosol substrate and the outlet aperture in the airflow chamber is less than the minimum spacing between the outlet aperture in the airflow chamber and the filter.

In an embodiment, more than 60% of the gas outlet holes are near the upper end of the aerosol-substrate when the aerosol-generating article is received in the sleeve.

In an embodiment, the aerosol-generating article is located in the aerosol matrix at an upper end of the vent tube when received in the sleeve.

In an embodiment, the central axis of at least one of the air outlet holes is perpendicular to the central axis of the vent pipe.

In one embodiment, the upper end of the aerosol substrate has an upper end region and the upper end region has a conical top, and the air outlet hole is arranged outside the conical top; or alternatively

The upper end area is provided with a conical top, and at least one air outlet hole is formed in the conical top.

In an embodiment, the vent pipe is provided with an air inlet hole for providing air into the air inlet channel, and the aerosol generating device further comprises a sealing device configured to control the air inflow of the air inlet hole.

In an embodiment, the sealing device comprises an electrically controlled sealing device configured to control the air intake of the air inlet hole through the opening degree of the electrically controlled sealing device; the aerosol generating device further comprises a suction detection sensor which is electrically connected with the electric control sealing device so as to control the opening degree of the electric control sealing device.

In an embodiment, the aerosol-generating device further comprises a sealing ring, the sealing ring being arranged inside a sleeve and configured to surround and be in airtight abutment with the aerosol-generating article when the aerosol-generating article is received in the sleeve; the suction detection sensor is arranged inside the sleeve and is positioned between the sealing ring and the collet.

In one embodiment, the sleeve has a heat generating area thereon, and the suction detection sensor is spaced apart from the heat generating area.

In one embodiment, the sealing device comprises a one-way air inlet valve.

In an embodiment, the aerosol-generating device further comprises a sealing ring arranged inside the sleeve, the sealing ring being configured to surround and be in airtight abutment with the aerosol-generating article when the aerosol-generating article is received in the sleeve, and the vent tube passing through the base in an airtight manner, such that ambient air enters the aerosol-generating article mainly through the vent holes on the vent tube.

An embodiment of the present utility model provides an aerosol-generating device, comprising:

a sleeve provided with an opening for at least partial access of the aerosol-generating article into the interior of the sleeve, and a shoe positioned below the opening; and

a vent tube secured to the shoe and at least partially disposed in the sleeve for insertion into the aerosol-generating article;

wherein at least one of the sleeve and the vent pipe is configured to be heatable, the vent pipe is internally configured with an air inlet channel in fluid communication with outside air, and the air outlet holes of the air inlet channel are distributed only in the upper end region of the vent pipe.

The embodiment of the utility model provides an aerosol generating system, which comprises the aerosol generating device and an aerosol generating product.

The aerosol generating device and the aerosol generating system have the advantages that the ventilation pipe provides the air inlet channel for the outside air to be in fluid communication with the aerosol generating product, and the air outlet holes in the ventilation pipe are mainly arranged near the upper end of the aerosol matrix, so that at least the bottom area of the aerosol matrix is in an oxygen-deficient environment, at least partial area of the aerosol matrix can generate aerosol in the oxygen-deficient environment, the aerosol matrix can have larger negative pressure during suction, and more aerosol can be sucked into the mouth.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows a schematic diagram of an aerosol-generating device provided by an embodiment of the utility model;

fig. 2 shows a schematic diagram of an aerosol-generating device according to another embodiment of the utility model.

Wherein the above figures include the following reference numerals:

1. an aerosol-generating article; 11. an aerosol matrix; 12. an airflow cavity; 13. a filter; 2. a housing; 3. a sleeve; 31. a heater; 32. an opening; 33. a bottom support; 4. a battery; 5. a control circuit; 6. an electromagnetic relay; 7. a vent pipe; 71. an air inlet hole; 72. an air outlet hole; 8. a stop block; 9. a suction detection sensor; 10. and (3) a sealing ring.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 and 2 in combination, an embodiment of the present application provides an aerosol-generating system comprising an aerosol-generating device and an aerosol-generating article 1, the aerosol-generating device being a device capable of receiving the aerosol-generating article 1 and enabling the aerosol-generating article 1 to generate an aerosol in an oxygen-depleted environment.

Therein, the aerosol-generating article 1 has an aerosol-substrate 11 therein which is heated to generate an aerosol. The aerosol matrix 11 may comprise a tobacco-containing material containing volatile tobacco flavour compounds that are released from the aerosol matrix upon heating. The aerosol substrate 11 may comprise a non-tobacco material. The aerosol-forming substrate may comprise tobacco-containing material and no tobacco-containing material. The aerosol-generating article 1 may be a cigarette, a tobacco rod, a cigar or the like.

The aerosol-generating article 1 further comprises a filter 13 for the user to hold in the mouth, the filter 13 and the aerosol-substrate 11 being spaced apart from each other, the filter 13 and the aerosol-substrate 11 being directly connectable. The aerosol-generating article 1 further comprises a paper shell arranged around the filter 13 and the aerosol-substrate 11, by means of which the aerosol-substrate 11 and the filter 13 are fixed.

The aerosol-generating device comprises a sleeve 3 and a vent tube 7.

The sleeve 3 is provided with an opening 32 and with a shoe 33 located below the opening 32, at least part of the aerosol-generating article 1 being inserted into the interior of the sleeve 3 through the opening 32, and the shoe 33 may support the bottom of the aerosol-generating article 1 or the shoe 33 may be able to support a residue falling off the aerosol-generating article 1, wherein the aerosol-substrate 11 in the aerosol-generating article 1 is completely accommodated in the sleeve 3.

The vent tube 7 is internally configured with an air intake passage in fluid communication with the outside air, the vent tube 7 is fixed to the shoe 33 and extends into the interior of the sleeve 3 along the axial direction of the sleeve 3, the air outlet hole 72 of the air intake passage is provided in the sleeve 3, at least part of the vent tube 7 is insertable into the interior of the aerosol-generating article 1 when the aerosol-generating article 1 is received in the sleeve 3, so that the outside air can enter into the interior of the aerosol-generating article 1 through the interior of the vent tube 7 when the aerosol-generating article 1 is received in the sleeve 3.

In one embodiment, the outlet holes 72 of the inlet channel are open only in the upper end region of the ventilation tube 7.

The upper end region of the vent pipe 7 is a region of the vent pipe 7 extending in the sleeve 3, which is a region of the vent pipe 7 extending downward from the upper end of the vent pipe 7 in the axial direction of the sleeve 3, with respect to the lower end region of the vent pipe 7, and which is a region of the vent pipe 7 containing the upper end of the vent pipe 7 and spaced apart from the shoe 33. The upper end region is closer to the opening 32 of the sleeve than the lower end region, or the lower end region is located between the shoe 33 and the upper end region. In the axial direction of the sleeve 3, the upper end region has a length which may be more than 2mm, or the ratio of the length of the upper end region to the extension of the ventilation tube 7 inside the sleeve 3 may be less than 1/2. For example, the ratio of the length of the upper end region to the extension of the ventilation tube 7 inside the sleeve 3 is 1/8-1/3.

By opening the outlet opening 72 of the inlet channel only in the upper end region of the ventilation tube 7, it is possible to generate aerosol in an oxygen-depleted environment in at least a partial region in the axial direction of the aerosol substrate 11 accommodated in the sleeve 3. In addition, compared with the prior art that an air inlet hole is formed in a cooling section between an aerosol substrate and a filter tip in the aerosol-generating product, the air outlet hole 72 of the air inlet channel is formed only in the upper end area of the air pipe 7, which is more beneficial to increasing the negative pressure in the bottom area of the aerosol-generating product 1 when the aerosol-generating product 1 is sucked, so that the aerosol generated by the aerosol-generating product 1 can be sucked into the mouth of a user more easily and in a larger amount, and the suction taste can be greatly improved.

Based on this, in an example, the upper end region of the breather pipe 7 is a region on the breather pipe 7 at a distance of 6mm or more from the shoe 33. The air outlet holes 72 of the air inlet passage are provided in the upper end region of the air vent pipe 7 such that the minimum distance between the air outlet holes 72 and the shoe 33 is greater than or equal to 6mm, and when there are a plurality of air outlet holes 72, the distance between the hole center of the air outlet hole 72 closest to the shoe 33 and the shoe 33 is the minimum distance between the air outlet hole 72 and the shoe 33, and when there is only one air outlet hole 72, the minimum distance between the air outlet hole 72 and the shoe 33 is the distance between the hole center of the air outlet hole 72 and the shoe 33. Thereby, it is possible to enable at least the aerosol substrate 11 having a length of not less than 6mm in the axial direction to generate an aerosol in an oxygen-deficient environment.

Referring to fig. 1 and 2, in order to facilitate insertion of the vent tube 7 inside the aerosol-generating article 1, or in order to facilitate entry of the aerosol-generating article 1 into the sleeve 3, the upper end region of the vent tube 7 may have a conical top, the closer to the opening 32 of the sleeve 3 in the axial direction of the sleeve 3, the smaller the area of the outer contour delineation of the conical top cross section. In one example, the conical roof constitutes the entire upper end region of the vent pipe 7, and therefore the vent holes 72 open only at the conical roof. In another example, the conical roof is located on top of the upper end region of the vent pipe 7, the upper end region of the vent pipe 7 further comprising a body portion, the area outlined by the outer contour of the body portion cross section being not significantly changed along the axial direction of the sleeve 3, the conical roof being closer to the opening 32 of the sleeve 3 than the body portion; thus, the air outlet holes 72 may be provided only on the top of the cone, or the air outlet holes 72 may be provided only on the body portion, or at least one air outlet hole 72 may be provided on the top of the cone, at least one air outlet hole 72 may be provided on the body portion, or a portion of at least one air outlet hole 72 may be located on the top of the cone, with the remainder being located on the body portion. Wherein the conical roof may be a pyramid structure or may be a cone structure. When the gas outlet holes 72 are disposed only on the top of the cone, the spacing between the cone top and the shoe 33 is less than the minimum spacing between the gas outlet holes 72 and the shoe 33.

In an embodiment, referring to fig. 1, when the aerosol-generating article 1 is received in the sleeve 3, the air outlet 72 of the vent tube 7 is disposed substantially adjacent to the upper end of the aerosol-substrate 11, wherein the upper end of the aerosol-substrate 11 is the end of the aerosol-substrate 11 adjacent to the filter.

Based on this, in an example, "the air outlet hole 72 on the air pipe 7 is disposed mainly near the upper end of the aerosol substrate 11" means that: when the aerosol-generating article 1 is received in the sleeve 3, the outlet holes 72 are each disposed adjacent the upper end of the aerosol-substrate 11, thereby reducing the amount of air that enters the aerosol-substrate 11 through the outlet holes 72, facilitating the ability of more of the aerosol-substrate 11 to be in an oxygen-deficient environment, and generating aerosols in an oxygen-deficient environment.

In one example, "the air outlet hole 72 of the air pipe 7 is disposed mainly near the upper end of the aerosol substrate 11" means that: when the aerosol-generating article 1 is accommodated in the sleeve 3, more than 60% of the outlet holes 72 are provided adjacent to the upper end of the aerosol substrate 11, or the total area of the outlet holes 72 provided adjacent to the upper end of the aerosol substrate 11 occupies more than 60% of the total area of all the outlet holes 72 provided in the ventilation tube 7. I.e. the air outlet holes 72 are mainly arranged in the upper end region of the vent pipe 7, the lower end region of the vent pipe 7 may have a small number of air outlet holes 72, or the total area of the air outlet holes 72 in the lower end region of the vent pipe 7 may be small. For example, when the aerosol-generating article 1 is received in the sleeve 3, 90% and more of the outlet holes 72 are provided adjacent the upper end of the aerosol-substrate 11. In other words, at least a partial region of the aerosol substrate 11 in the axial direction may be subjected to an oxygen-deficient environment by reducing the amount of air taken into the aerosol substrate 11. By reducing the amount of air taken into the aerosol base 11 is meant that the amount of air taken into at least a partial region of the aerosol base 11 in the axial direction is smaller than the amount of aerosol taken out of this region of the aerosol base 11 by suction.

In an example, the extension length of the vent tube 7 inside the sleeve 3 is greater than or equal to 1/2 of the length of the aerosol substrate 11, so that the depth of insertion of the vent tube 7 into the aerosol substrate 11 can be greater than 1/2 of the length of the aerosol substrate 11, the gas outlet holes 72 arranged in the upper end region of the vent tube 7 can be closer to the upper end of the aerosol substrate 11 than to the lower end of the aerosol substrate 11; helping to place at least 1/2 of the area of the aerosol substrate 11 axially in an oxygen-deficient environment.

In an embodiment, referring to fig. 1, the air outlet holes 72 are all located in the aerosol-substrate 11, that is, when the aerosol-generating article 1 is received in the sleeve 3, the upper end of the ventilation tube 7 is located in the aerosol-substrate 11, and the air outlet holes 72 may be all disposed adjacent to the upper end of the aerosol-substrate 11: on the one hand, the external air entering the interior of the aerosol matrix 11 during suction can be reduced, so that more aerosol matrix 11 can be in an oxygen-deficient environment; on the other hand, with the aerosol-generating article 1 having the airflow chamber 12, the air outlet holes 72 can be placed in a relatively large negative pressure of the aerosol-generating article 1 because they are not too close to the filter tip when the user sucks the aerosol-generating article 1, which helps the aerosol generated by the aerosol-generating article 11 to be easily sucked into the mouth by the user, helps the user to inhale a larger amount of aerosol at one time, and helps to increase the ratio of the aerosol in the airflow sucked by the user at one time, so that the suction taste of the user can be greatly improved.

In this embodiment, when the length of the aerosol substrate 11 in the axial direction is greater than 12mm, the maximum distance between the upper end of the aerosol substrate 11 and the air outlet holes 72 may be less than or equal to 6mm.

In an embodiment, the aerosol-generating article 1 further comprises an airflow cavity 12, the airflow cavity 12 being arranged between the aerosol-substrate 11 and the filter, the airflow cavity 12 providing an airflow path for aerosol to flow into the filter, the airflow cavity 12 being adapted to cool the aerosol flowing therethrough in order to prevent excessive temperatures of the aerosol entering the filter from scalding the filter.

A portion of the vent tube 7 may extend through the aerosol substrate 11 until it is positioned in the airflow chamber 12. The vent tube 7 positioned in the airflow chamber 12 may have at least one vent hole 72 thereon, i.e., the at least one vent hole 72 may be positioned in the airflow chamber 12. For convenience of description, the air outlet 72 located in the air flow chamber 12 is referred to as a first air outlet, the air outlet 72 located locally in the air flow chamber 12 and the rest of the air outlet located in the aerosol substrate 11 is referred to as a second air outlet, and the air outlet 72 located in the aerosol substrate 11 is referred to as a third air outlet.

In one example, the air outlet holes 72 formed in the ventilation pipe 7 are all first air outlet holes, so that the aerosol substrate 11 can be completely in an oxygen-deficient environment during suction, and the aerosol generated by the aerosol substrate 11 and the air entering the air flow chamber 12 through the first air outlet holes are mixed in the air flow chamber 12 and then enter the filter tip. In this example, in order to ensure that the user can inhale the aerosol generated by the aerosol substrate 11 more easily or in a larger amount, the maximum distance between the first air outlet hole and the aerosol substrate 11 may be smaller than or equal to the minimum distance between the first air outlet hole and the filter tip, i.e. the first air outlet hole is arranged closer to the aerosol substrate 11 than the filter tip, so as to prevent that the instantaneous negative pressure degree of the air flow cavity 12 is larger than the instantaneous negative pressure degree of the environment in which the aerosol substrate 11 is located during the inhalation, and thus the aerosol generated by the aerosol substrate 11 can only be inhaled into the filter tip in a small amount or not, and the large amount of components in the air flow inhaled by the user is the air without the fragrance of the aerosol.

In an example, the air outlet holes 72 formed on the ventilation pipe 7 are all second air outlet holes, so that the aerosol substrate 11 is almost completely in the oxygen-deficient environment during suction, at this time, the second air outlet holes are positioned at or adjacent to the upper end of the aerosol substrate 11, and the instantaneous negative pressure degree of the environment where the aerosol substrate 11 is positioned during suction is close to the instantaneous negative pressure degree of the airflow cavity 12, which is helpful for a user to inhale the aerosol generated by the aerosol substrate 11 into the nozzle.

In an example, the air outlet holes 72 formed in the ventilation pipe 7 are all third air outlet holes. Thus, upon aspiration, the aerosol substrate 11 is exposed to an environment having an instantaneous negative pressure that approximates the instantaneous negative pressure of the airflow chamber 12. In this example, it is preferable that the third gas outlet holes are provided adjacent to the upper end of the aerosol substrate 11 to ensure that the environment in which the aerosol substrate 11 is located is an oxygen-deficient environment, facilitating the production of more aerosol by the aerosol substrate 11 in the oxygen-deficient environment.

It will be appreciated that in other examples, the vent hole 72 provided in the vent pipe 7 may have at least two of the first, second and third vent holes at the same time.

Referring to fig. 1 and 2, the central axis of at least one air outlet hole 72 of the air vent pipe 7 is perpendicular to the central axis of the air vent pipe 7, that is, the at least one air outlet hole 72 is a transverse hole formed in the wall of the main body of the air vent pipe 7, and the transverse hole is not easy to be entered and blocked by the aerosol matrix 11 during the process of inserting the air vent pipe 7 into the aerosol-generating product 1. It is of course not excluded that the conical roof of the aeration pipe 7 may have an outlet opening 72 inclined to the centre axis of the aeration pipe 7 and that the conical roof of the aeration pipe 7 may have an outlet opening 72 co-axial with the centre axis of the aeration pipe 7.

In an embodiment, the aerosol generating device further comprises a sealing device configured to control the amount of air taken by the vent pipe 7, e.g. the sealing device may isolate the air intake passage in the vent pipe 7 from the ambient air such that ambient air cannot enter the air intake passage. Or for example, the sealing device may control the amount of air that enters the air intake passage per unit time so that the user can adjust the mixing ratio between the aerosol in the suction nozzle and the air according to his own suction demand.

Referring to fig. 1, the vent pipe 7 is provided with an air inlet 71, and the air from the outside enters the air inlet channel through the air inlet 71. A sealing device may be provided at the intake hole 71 to control the amount of intake air of the intake hole 71.

The sealing device may include an electric control sealing device, so that the sealing device may be controlled by a control instruction, so that the sealing device executes a command to regulate and control the air intake amount of the air inlet 71. The electronic control sealing device can control the air inflow of the air inlet 71 through the opening degree of the electronic control sealing device, or can regulate the opening degree of the air inlet 71.

The aerosol-generating device further comprises a puff-detecting sensor 9, the puff-detecting sensor 9 being arranged to detect whether the aerosol-generating article 1 incorporated in the aerosol-generating device is being smoked, the puff-detecting sensor 9 being arranged to determine whether there is a puff event based on a change in airflow or air pressure at a location in the aerosol-generating device. The suction detection sensor 9 is electrically connected with the electric control sealing device, and the suction detection sensor 9 can generate the control command to control the operation of the electric control sealing device. In an example, when the suction detection sensor 9 detects that there is a suction event, a first control instruction is sent to the electronic control sealing device to allow the external atmosphere to enter the air inlet channel and further enter the aerosol-generating article 1, when the suction detection sensor 9 does not detect the suction event or detects that the suction event is finished, a second control instruction is sent to the electronic control sealing device to seal the air inlet hole 71, so that the external atmosphere is prevented from entering the air inlet channel, and of course, the electronic control sealing device can immediately execute a command for sealing the air inlet hole 71 or can delay a preset time to execute a command for sealing the air inlet hole 71 again when receiving the second control instruction.

In a specific example, the electrically controlled sealing device includes a solenoid valve and a control circuit 5, the suction detection sensor 9 and the solenoid valve are both electrically connected to the control circuit 5, and after a control instruction sent by the suction detection sensor 9 is received by the control circuit 5, the control circuit 5 controls the solenoid valve to perform a job to regulate and control the intake air amount of the intake hole 71. More specifically, the electromagnetic valve may include an electromagnetic relay 6 and a stopper 8, and the stopper 8 may be driven to block at least part of the air intake hole 71 when the electromagnetic relay 6 is energized to generate magnetism.

It should be noted that in other embodiments, the sealing device may be non-electronically controlled, e.g., the sealing device may include a one-way air inlet valve, such as a duckbill valve.

In one embodiment, the puff detection sensor 9 is used to detect changes in airflow or air pressure conditions within the cannula 3 to determine whether there is a puff event. Specifically, referring to fig. 1, the aerosol-generating device further comprises a sealing ring 10, the sealing ring 10 is disposed inside the sleeve 3, the sealing ring 10 surrounds the aerosol-generating article 1 when the aerosol-generating article 1 is received in the sleeve 3, and the sealing ring 10 is in airtight abutment with the aerosol-generating article 1 such that air cannot pass between the sealing ring 10 and the aerosol-generating article 1. The suction detection sensor 9 is arranged inside the sleeve 3 between the sealing ring 10 and the shoe 33 such that when the aerosol-generating article 1 is received in the sleeve 3 there is a sealed cavity between the aerosol-generating article 1 and the sleeve 3, the sealing ring 10 may define an upper boundary of the sealed cavity in which the suction detection sensor 9 is located. The bottom of the aerosol-generating article 1 is in clearance fit with the bottom support 33, or the paper shell around the aerosol-generating article 11 is air-permeable, so that the sealed cavity is in fluid communication with the interior of the aerosol-generating article 1, and when sucking, the gas in the sealed cavity leaves the sealed cavity and enters the aerosol-generating article 11, so that the sealed cavity forms negative pressure, the suction detection sensor 9 is an air pressure sensor and can detect air pressure, and when the degree of the negative pressure of the sealed cavity reaches the detection threshold value of the suction detection sensor 9, the suction detection sensor 9 can generate a control instruction. The paper shell ventilation comprises at least two conditions that the paper shell is made of ventilation materials or ventilation holes are formed in the paper shell.

In order to ensure that at least part of the aerosol matrix 11 is in an oxygen-depleted environment when heated, the vent tube 7 and the shoe 33 may be connected hermetically, i.e. the vent tube 7 passes through the shoe 33 and the vent tube 7 is connected to the shoe 33 in a sealed manner, the gas cannot pass through the connection between the vent tube 7 and the shoe 33. So that the vent tube 7 may provide a primary air intake passage for ambient atmosphere into the aerosol-generating article 1. The space between the sealing ring 10 and the shoe 33 is a sealed cavity into which the outside atmosphere cannot or only very little enter when the aerosol-generating article 1 is received in the sleeve 3, such that the atmosphere enters the aerosol-generating article 1 mainly through the outlet holes 72 in the vent tube 7, thereby limiting the amount of air and oxygen in the aerosol-substrate 11, such that at least part of the aerosol-substrate 11 may be in an oxygen-depleted environment when heated.

In an embodiment, the aerosol-generating device further comprises a heater 31, the heater 31 being for heating the aerosol-generating article received within the sleeve 3, in particular the heater 31 being for heating the aerosol-substrate 11. The heater 31 may be arranged on the sleeve 3, or the heater 31 may be arranged on the vent pipe 7, or both the sleeve 3 and the vent pipe 7 may be arranged with the heater 31. I.e. at least one of the sleeve 3 and the vent tube 7 is configured to be heatable.

The heater 31 may comprise a resistive material capable of generating joule heat when electrically energized, and suitable resistive heaters 31 may include resistive coils, resistive printed wiring, resistive films, or resistive etched mesh, among others.

The heater 31 may include a susceptor that is capable of generating eddy currents in a varying magnetic field and then generating heat based on the eddy currents. When the aerosol-generating device comprises a susceptor, the aerosol-generating device further comprises a magnetic field generator for generating a varying magnetic field, and the susceptor is arranged in the varying magnetic field generated by the magnetic field generator, the magnetic field generator may be in the form of one or more induction coils, and the susceptor may be surrounded by the one or more induction coils.

The heater 31 may generate infrared rays upon electrical conduction, which are directed to the aerosol substrate 11 in the sleeve 3, so that the aerosol substrate 11 is warmed up by absorbing the infrared rays. Thus, the heater 31 may be an infrared coating or an infrared film.

In an embodiment, at least part of the sleeve 3 is made of a heat-generating material, for example at least part of the sleeve 3 is made of an electrically conductive ceramic, or at least part of the sleeve 3 is made of a susceptor, so that at least part of the sleeve 3 can generate heat upon electrical conduction or in a varying magnetic field to heat the aerosol matrix 11 located inside the sleeve 3. For convenience of description, the region of the sleeve 3 made of a material that can generate heat is referred to as a heat generating region.

When the suction detection sensor 9 is disposed in the sleeve 3, the suction detection sensor 9 is spaced from the heater 31 or from the heat generating region to avoid high temperature generated by the heater 31 or the heat generating region from damaging the suction detection sensor 9 or to accelerate aging of the suction detection sensor 9, contributing to prolonging the service life of the suction detection sensor 9 and ensuring that the suction detection sensor 9 is used in a suitable environment. Referring to fig. 1, in the axial direction of the sleeve 3, the suction detection sensor 9 is located between the sealing ring 10 and the heater 31 or the heating area, that is, the suction detection sensor 9 is located above or obliquely above the heater 31 or the heating area, the suction detection sensor 9 is not in contact with the heater 31 or the heating area, and the suction detection sensor 9 is located below the sealing ring 10.

Referring to fig. 1, the aerosol generating device further comprises a battery 4 and a housing 2, wherein the sleeve 3, the vent pipe 7 and the battery 4 are disposed inside the housing 2, the battery 4 is used for providing the power for heating the heater 31 or providing the power for heating the heating area, and the battery 4 is also capable of providing the power for operating the suction detection sensor 9 and the sealing device.

According to the aerosol generating device and the aerosol generating system, the air inlet channel is formed by the air pipe, the outside air is in fluid communication with the aerosol generating product, the air outlet hole in the air pipe is mainly arranged close to the upper end of the aerosol matrix, at least the bottom area of the aerosol matrix is provided with a relatively small air inflow, so that the temperature of the aerosol matrix, which is burnt or burnt, can be increased, the aerosol matrix is prevented from being burnt or burnt at a conventional high temperature, the reduction of miscellaneous gases in the aerosol is facilitated, the heating temperature of the aerosol matrix can be properly increased, the heating temperature of the aerosol matrix can be higher than the conventional high temperature, the aerosol generation amount of the aerosol matrix in unit time and the alcohol thickness of the aerosol are improved, the taste of the aerosol matrix is improved, and the temperature fluctuation range of the interior of the aerosol matrix during suction can be reduced due to the reduction of the air inflow in the aerosol matrix, and the reduction of energy consumption is facilitated.

According to the aerosol generating device and the aerosol generating system, the vent pipe provides the air inlet channel for communicating outside air with the aerosol generating product in a fluid mode, and the air outlet holes in the vent pipe are mainly arranged close to the upper end of the aerosol matrix, at least the bottom area of the aerosol matrix is in an oxygen-deficient environment, so that at least partial area of the aerosol matrix can generate aerosol in the oxygen-deficient environment, the aerosol matrix can have larger negative pressure during suction, and more aerosol can be sucked into the mouth.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (17)

1. An aerosol-generating device for heating an aerosol-generating article (1), the aerosol-generating article (1) having an aerosol-substrate (11) therein capable of generating an aerosol upon exposure to heat, the aerosol-generating device comprising:

a sleeve (3) provided with an opening (32) for at least partial access of the aerosol-generating article (1) into the interior of the sleeve (3), and with a shoe (33) located below the opening (32); and

-a vent tube (7) fixed to the shoe (33), and at least part of the vent tube (7) being arranged in the sleeve (3) for insertion into the aerosol-generating article (1);

wherein the vent tube (7) is configured to provide an air inlet passage for external air in fluid communication with the aerosol-generating article (1), the air outlet aperture (72) on the vent tube (7) being disposed primarily near the upper end of the aerosol-substrate (11).

2. Aerosol-generating device according to claim 1, characterized in that the extension of the vent tube (7) inside the sleeve (3) is greater than 1/2 of the length of the aerosol matrix (11); or alternatively

The minimum distance between the air outlet hole (72) and the bottom support (33) is greater than or equal to 6mm.

3. Aerosol-generating device according to claim 1, characterized in that the aerosol-generating article (1) further has an airflow chamber (12) and a filter (13) therein, the airflow chamber (12) being arranged between the aerosol-substrate (11) and the filter (13) to provide a passage for aerosol into the filter (13);

when the aerosol-generating article (1) is received in the sleeve (3), a part of the vent tube (7) extends into the airflow chamber (12), and at least one of the air outlet holes (72) is located in the airflow chamber (12).

4. An aerosol-generating device according to claim 3, characterized in that the maximum distance between the upper end of the aerosol substrate (11) and the outlet aperture (72) located in the airflow chamber (12) is smaller than the minimum distance between the outlet aperture (72) located in the airflow chamber (12) and the filter (13).

5. An aerosol-generating device according to claim 1, characterized in that more than 60% of the outlet holes (72) are near the upper end of the aerosol-substrate (11) when the aerosol-generating article (1) is received in the sleeve (3).

6. Aerosol-generating device according to claim 1, characterized in that the upper end of the vent tube (7) is located in the aerosol-substrate (11) when the aerosol-generating article (1) is received in the sleeve (3).

7. Aerosol-generating device according to claim 1, characterized in that the central axis of at least one of the outlet openings (72) is perpendicular to the central axis of the vent tube (7).

8. Aerosol-generating device according to claim 1, characterized in that the aerosol-substrate (11) has an upper end region with a conical tip, the outlet opening (72) being open out of the conical tip; or alternatively

The upper end region has a conical roof on which at least one gas outlet (72) is provided.

9. An aerosol-generating device according to any of claims 1-7, characterized in that the ventilation tube (7) is provided with an air inlet hole (71) providing air into the air inlet channel, the aerosol-generating device further comprising a sealing device configured to control the air intake of the air inlet hole (71).

10. The aerosol-generating device according to claim 9, characterized in that the sealing device comprises an electrically controlled sealing device configured to control the air intake amount of the air intake hole (71) by its opening; the aerosol generating device further comprises a suction detection sensor (9), and the suction detection sensor (9) is electrically connected with the electric control sealing device so as to control the opening degree of the electric control sealing device.

11. The aerosol-generating device according to claim 10, further comprising a sealing ring (10), the sealing ring (10) being arranged inside a sleeve (3), and the sealing ring (10) being configured to surround the aerosol-generating article (1) and to be in airtight abutment with the aerosol-generating article (1) when the aerosol-generating article (1) is received in the sleeve (3); the suction detection sensor (9) is arranged inside the sleeve (3) and is positioned between the sealing ring (10) and the collet (33).

12. Aerosol-generating device according to claim 11, characterized in that the sleeve (3) has a heating zone on it, the suction detection sensor (9) being spaced apart from the heating zone.

13. An aerosol generating device according to claim 10, wherein the sealing means comprises a one-way air inlet valve.

14. An aerosol-generating device according to claim 1, further comprising a sealing ring (10) arranged inside the sleeve (3), the sealing ring (10) being configured to surround the aerosol-generating article (1) and to be in airtight abutment with the aerosol-generating article (1) when the aerosol-generating article (1) is received in the sleeve (3), and the vent tube being passed through the shoe (33) in airtight manner such that ambient air enters the aerosol-generating article (1) mainly through the vent holes (72) on the vent tube (7).

15. An aerosol-generating device, comprising:

a sleeve (3), wherein an opening (32) for at least partial access of the aerosol-generating article (1) into the interior of the sleeve (3) is arranged on the sleeve (3), and a bottom bracket (33) positioned below the opening (32) is also arranged; and

-a vent tube (7) fixed to the shoe (33), and at least part of the vent tube (7) being arranged in the sleeve (3) for insertion into the aerosol-generating article (1);

wherein at least one of the sleeve (3) and the vent pipe (7) is configured to be heatable, an air inlet channel in fluid communication with outside air is configured inside the vent pipe (7), and air outlet holes (72) of the air inlet channel are distributed only in an upper end region of the vent pipe (7).

16. An aerosol-generating system comprising an aerosol-generating device according to any of claims 1-15, further comprising an aerosol-generating article (1).

17. An aerosol-generating system according to claim 16, characterized in that the aerosol-generating device further comprises a sealing ring (10), the sealing ring (10) being arranged inside the sleeve (3); -there is a sealed cavity between the aerosol-generating article (1) and the sleeve (3), the sealing ring (10) defining an upper boundary of the sealed cavity;

-a paper shell surrounding the aerosol matrix (11) is air permeable such that the aerosol matrix (11) is in fluid communication with the sealed cavity; or alternatively

The aerosol-generating article (1) and the shoe (33) have a gap therebetween such that the aerosol-substrate (11) is in fluid communication with the sealed cavity.