CN218921686U - Heating unit and aerosol generating device - Google Patents

Abstract

The application provides a heating unit and an aerosol generating device, wherein the heating unit comprises an air passage pipe assembly, a heating seat and a heating assembly, the air passage pipe assembly is provided with a first accommodating cavity, and the top end of the first accommodating cavity is an open end; the heating seat is arranged in the first accommodating cavity and is fixed at the bottom of the first accommodating cavity; the heating component is arranged in the first accommodating cavity and is fixed at one end of the heating seat, which is away from the bottom of the first accommodating cavity; the heat generating component has a receiving cavity for receiving the aerosol-generating article, the receiving cavity being in communication with the open end such that the aerosol-generating article can be inserted into the receiving cavity from the open end. The heating unit that this application provided simple structure, and spare part is less, therefore the size is less, and has further reduced aerosol generating device's spare part quantity and size, and the equipment of being convenient for.

Description

Heating unit and aerosol generating device

Technical Field

The application relates to the field of atomization, in particular to a heating unit and an aerosol generating device.

Background

An aerosol-generating system generally consists of an aerosol-generating device for housing an aerosol-generating article and heating the aerosol-generating article to generate an aerosol, which may be applied in different fields. For example, medical nebulization, cosmetic nebulization, leisure ingestion, and the like.

In one use scenario, an aerosol-generating article comprises a plant stem and leaf solid substrate comprising a specific aroma, in combination with baking in a manner that does not burn upon heating to cause the plant stem and leaf solid substrate to generate an aerosol for use by a user. The heating non-combustion method can be generally classified into a central embedded heating method in which the aerosol-generating article is heated by inserting a heating sheet or rod into the aerosol-generating article, and a tubular peripheral heating method in which the aerosol-generating article is heated by surrounding the heating tube. Tubular peripheral heating appliances are increasingly favored by consumers because of their easy cleaning and ease of use.

However, the conventional tubular peripheral heating apparatus is large in size, complex in structure, and more in number of assembled parts.

Disclosure of Invention

The utility model provides a heating unit and aerosol generating device can solve current aerosol generating device size and be bigger, and the structure is complicated, and assembles the more problem of spare part.

In order to solve the technical problems, one technical scheme adopted by the application is as follows: provided is a heat generating unit including: the airway tube assembly is provided with a first accommodating cavity, and the top end of the first accommodating cavity is an open end; the heating seat is arranged in the first accommodating cavity and is fixed at the bottom of the first accommodating cavity; the heating component is arranged in the first accommodating cavity and is fixed at one end of the heating seat, which is away from the bottom of the first accommodating cavity; the heat generating component has a receiving cavity for receiving the aerosol-generating article, the receiving cavity being in communication with the open end such that the aerosol-generating article can be inserted into the receiving cavity from the open end.

In one embodiment, a heat generating component includes: a heating tube; the heating tube is a hollow column body, and the heating tube defines a containing cavity; and the heating circuit is arranged on the inner surface and/or the outer surface of the heating tube.

In one embodiment, a heat generating component includes: a heating tube; the heating tube is a hollow column body, and the heating tube defines a containing cavity; the electromagnetic coil is sleeved on the outer side of the heating tube and is arranged at intervals with the heating tube.

In one embodiment, the heat generating component further comprises: the insulating tube is sleeved on the outer side of the heating tube and is coaxially arranged with the heating tube; the electromagnetic coil is sleeved on the outer side of the insulating tube.

In an embodiment, the heat generating unit further comprises: and the ferrite pipe is sleeved outside the electromagnetic coil.

In an embodiment, the heat generating unit further comprises: a heat insulating material; the heat insulating material is filled between the heating component and the airway tube component.

In an embodiment, the heat generating unit further comprises: the uniform heat pipe is sleeved on the outer surface of the airway tube component.

In one embodiment, the susceptor comprises annular side walls and a bottom wall; the annular side wall and the bottom wall of the heating seat enclose a mounting cavity, so that the substrate section of the aerosol-generating product can be accommodated in the accommodating cavity and the mounting cavity.

In an embodiment, the heat generating unit further comprises: and the detection device is arranged on the outer side of the annular side wall of the heating seat and is used for detecting the aerosol generating product.

In one embodiment, an airway tube assembly includes: an airway tube; the air passage pipe top seat covers the top end of the air passage pipe and is provided with a first through hole; the air passage pipe base covers the bottom end of the air passage pipe and is fixedly connected with the heating seat; the air passage pipe, the air passage pipe top seat and the air passage pipe base define a first accommodating cavity, the air passage pipe top seat is used as an opening end of the first accommodating cavity, and an opening of the accommodating cavity is arranged corresponding to the first through hole.

In an embodiment, the top surface of the top end of the air passage pipe is provided with a first groove, the radial cross section of the first groove is circular, the bottom wall of the first groove is provided with a plurality of bulges which are annularly arranged and coaxially arranged with the side wall of the first groove, and the bottom wall of the first groove is provided with a second through hole which is correspondingly arranged with the first through hole; the air flue pipe and the air flue pipe top seat are also provided with a first sealing piece, the first sealing piece comprises a first sealing part and a second sealing part perpendicular to the first sealing part, the first sealing part is arranged between the bottom surface of the air flue pipe top seat and the top surface of the side wall of the first groove, and the second sealing part is arranged between the side wall of the first groove and the protrusions.

In one embodiment, the side wall of the airway tube base is provided with a first abdication part extending along the axial direction and penetrating through the airway tube base, and the electric lead of the heating component penetrates through the first abdication part.

In an embodiment, the heat generating unit further comprises: the second sealing piece comprises a third sealing part and a fourth sealing part, the third sealing part is arranged between the top surface of the airway tube base and the bottom surface of the heating seat, and the fourth sealing part is arranged between the outer side surface of the airway tube base and the inner side surface of the airway tube.

In one embodiment, the contact surface of the fourth sealing part and the airway tube is an inclined surface.

In one embodiment, the chamber wall of the first receiving chamber has an air flow passage with one end in fluid communication with the outside air or the atomizing passage of the atomizer and the other end in communication with the first receiving chamber.

In an embodiment, the outer side surface of the heating seat is provided with a first limiting part, the inner side surface of the air passage pipe assembly is provided with a second limiting part, the first limiting part is connected with the second limiting part in a clamping mode, one of the first limiting part and the second limiting part is a clamping groove, and the other one of the first limiting part and the second limiting part is a protrusion.

In an embodiment, the outer side surface of the heating seat is provided with a second abdication part, and the electric lead of the heating component passes through the second abdication part.

In order to solve the technical problems, one technical scheme adopted by the application is as follows: there is provided an aerosol-generating device comprising: a housing; a heat generating unit, wherein the heat generating unit is any one of the heat generating units; the heat generating unit is for heating the aerosol-generating article to generate a second aerosol; the power supply component is electrically connected with the heating component in the heating unit and is used for supplying power to the heating component and controlling the heating component to work.

In order to solve the technical problems, one technical scheme adopted by the application is as follows: there is provided an aerosol-generating device comprising: a housing; a heat generating unit, wherein the heat generating unit is any one of the heat generating units; the heat generating unit is for heating the aerosol-generating article to generate a second aerosol; the atomizer is provided with a liquid storage cavity and an atomization channel which is in fluid communication with the airflow channel in the heating unit, the liquid storage cavity stores liquid aerosol generating matrixes, the atomizer is used for heating the atomized liquid aerosol generating matrixes to generate first aerosol, and the first aerosol is discharged to the airflow channel through the atomization channel; the power supply assembly is respectively and electrically connected with the heating assembly in the heating unit and the atomizing assembly in the atomizer and is used for supplying power to the heating assembly and the atomizing assembly and controlling the heating assembly and the atomizing assembly to work.

Different from the prior art, the heating unit and the aerosol generating device provided by the application comprise an air passage pipe assembly, a heating seat and a heating assembly, wherein the air passage pipe assembly is provided with a first accommodating cavity, and the top end of the first accommodating cavity is an opening end; the heating seat is arranged in the first accommodating cavity and is fixed at the bottom of the first accommodating cavity; the heating component is arranged in the first accommodating cavity and is fixed at one end of the heating seat, which is away from the bottom of the first accommodating cavity; the heat generating component has a receiving cavity for receiving the aerosol-generating article, the receiving cavity being in communication with the open end such that the aerosol-generating article can be inserted into the receiving cavity from the open end. The heating unit provided by the application is simple in structure, fewer in parts, smaller in size, convenient to assemble and capable of further reducing the number and the size of parts of the aerosol generating device.

Drawings

For a clearer description of the technical solutions in the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

Fig. 1 is a schematic structural view of an embodiment of an aerosol-generating system provided herein;

fig. 2 is a schematic structural view of an embodiment of an aerosol-generating article provided herein;

fig. 3 is a cross-sectional view of the aerosol-generating system shown in fig. 1;

fig. 4 is a schematic view of the atomizer, heating unit, and aerosol-generating article of fig. 3;

FIG. 5 is a schematic view of a first embodiment of a heating unit provided herein;

fig. 6 is an exploded view of the structure of the heating unit shown in fig. 5;

fig. 7 is a cross-sectional view of the heating unit shown in fig. 5;

FIG. 8 is a schematic diagram of an embodiment of a heat generating seat as shown in FIG. 6;

FIG. 9 is a schematic structural view of an embodiment of the second seal as shown in FIG. 6;

FIG. 10 is a schematic view of a second embodiment of a heating unit provided herein;

fig. 11 is a structural exploded view of the heating unit shown in fig. 10;

fig. 12 is a cross-sectional view of the heating unit shown in fig. 10;

FIG. 13 is a schematic view of an embodiment of the body portion shown in FIG. 11;

FIG. 14 is a schematic view of the airflow direction of the first embodiment of the area A in FIG. 4;

FIG. 15 is a schematic view of the flow direction of the air flow of the second embodiment shown as zone A in FIG. 4;

FIG. 16 is a schematic view of the airflow direction of the third embodiment of the area A in FIG. 4;

FIG. 17 is a schematic view of the flow direction of the air flow of the fourth embodiment shown as zone A in FIG. 4;

FIG. 18 is a schematic view of the airflow direction of a fifth embodiment of the area A in FIG. 4;

FIG. 19 is a schematic view of the airflow direction of a sixth embodiment of the area A in FIG. 4;

fig. 20 is a schematic view of the airflow direction of a seventh embodiment of the region a in fig. 4.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terms "first," "second," "third," and the like in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The present application is described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1, fig. 1 is a schematic structural view of an embodiment of an aerosol-generating system provided herein. The aerosol-generatingsystem 300 comprises an aerosol-generatingdevice 100 and an aerosol-generatingarticle 200, wherein the aerosol-generatingarticle 200 comprises a solid aerosol-generating substrate of plant stems and leaves having a specific aroma, and the aerosol-generatingdevice 100 has a first receiving cavity A1 for receiving the aerosol-generatingarticle 200.

Specifically, the plant stem and leaf solid substrate containing specific aroma can generate aerosol with specific aroma, and theaerosol generating product 200 is heated under low-temperature baking condition, generally not higher than 350 ℃, so that the release of harmful substances in the aerosol can be greatly reduced, and the harmful substances can be reduced by more than 90%, thereby providing an effective healthy leisure mode for consumers.

Referring to fig. 2, fig. 2 is a schematic structural view of an embodiment of an aerosol-generating article provided herein. The aerosol-generatingarticle 200 generally comprises amatrix segment 1, ahollow segment 2 and afilter segment 3. Thesubstrate segment 1 is provided with an aerosol-generating substrate for generating an aerosol under heating conditions; thehollow section 2 is used for collecting and cooling the aerosol generated by thesubstrate section 1 to cool the temperature of the aerosol to a temperature range suitable for user suction; thefilter segment 3 is used for filtering impurities in the aerosol for the convenience of the user.

In one embodiment, the bottom of thesubstrate segment 1 is further provided with afilter element 4, and thefilter element 4 can prevent the aerosol-generatingarticle 200 from being broken during the heating process, so as to cause cleaning problem of the aerosol-generatingdevice 100; and thefilter element 4 may allow the passage of gas.

In an embodiment, the aerosol-generatingarticle 200 has air inlet holes thereon, which at least comprise a first air inlet hole D1 provided at the bottom of thesubstrate section 1, a second air inlet hole D2 provided at the side wall of thesubstrate section 1 and/or a third air inlet hole D3 provided at the side wall of thehollow section 2, so that external air can enter the aerosol-generatingarticle 200 through the at least one air inlet hole.

Referring to fig. 3 and 4, fig. 3 is a cross-sectional view of the aerosol-generating system shown in fig. 1;

Fig. 4 is a schematic view of the atomizer, heating unit, and aerosol-generating article of fig. 3.

Specifically, the aerosol-generatingdevice 100 includes ahousing 10, anatomizer 20, aheat generating unit 30, and apower supply assembly 40. Wherein,atomizer 20,heating element 30 andpower module 40 set up inshell 10,atomizer 20,heating element 30 are connected withpower module 40 electricity respectively, andpower module 40 is used for supplying power foratomizer 20 andheating element 30, andcontrol atomizer 20 andheating element 30 work. Specifically, theaerosol generating device 100 further has a second accommodating cavity A2, the second accommodating cavity A2 is disposed below the first accommodating cavity A1, theatomizer 20 is accommodated in the second accommodating cavity A2, and a liquid aerosol-generating substrate is stored in theatomizer 20, where the liquid aerosol-generating substrate may be a combined oil containing a specific aroma or substance, and theatomizer 20 heats the aerosol-generating substrate therein under the condition of power-on to generate the first aerosol. Theheat generating unit 30 is disposed within thehousing 10 and defines a first receiving cavity A1, theheat generating unit 30 heating the aerosol-generatingarticle 200 to generate a second aerosol under energized conditions.

Wherein theatomizer 20 has an atomization channel B1 for guiding out the first aerosol, the cavity wall of the second accommodating cavity A2 has a first aerosol channel B2 communicated with the atomization channel B1, theheating unit 30 has an airflow channel B3 communicated with the first aerosol channel B2 and the aerosol-generatingarticle 200, and thehollow section 2 and thefilter section 3 in the aerosol-generatingarticle 200 cooperate to form a second aerosol channel B4 communicated with the outside. When the aerosol-generatingdevice 100 is in operation, the first aerosol generated in theatomizer 20 is introduced into the aerosol-generatingarticle 200 through the atomizing passage B1, the first aerosol passage B2, and the air flow passage B3 in this order, and is mixed with the second aerosol generated in the aerosol-generatingarticle 200 to form a mixed aerosol, which is discharged through the second aerosol passage B4 in the aerosol-generatingarticle 200 for use by a user.

In another embodiment, the first aerosol-channel B2 communicates directly with the outside without communicating with the air-flow channel B3, the first aerosol generated in theatomizer 20 is discharged through the atomizing channel B1 and the first aerosol-channel B2, the second aerosol generated in the aerosol-generatingarticle 200 is discharged through the second aerosol-channel B4, and the first aerosol and the second aerosol are mixed outside the aerosol-generatingdevice 100 or inside the user's mouth. The design can be specifically performed according to actual needs, and is not limited herein.

In an embodiment, according to the preference of the user, and the problems of appliance design, cost, etc., theatomizer 20 may not be provided in theaerosol generating device 100, thereby reducing the difficulty in designing the appliance and the cost, i.e., theaerosol generating device 100 includes only thehousing 10, theheat generating unit 30, and thepower supply assembly 40. The aerosol-generatingdevice 100 is only used to heat the aerosol-generatingarticle 200 to generate a second aerosol for use by a user to ensure the purity of the second aerosol and to enhance the user's satisfaction.

Referring to fig. 5 to 13, fig. 5 is a schematic structural view of a first embodiment of a heating unit provided in the present application; fig. 6 is an exploded view of the structure of the heating unit shown in fig. 5; fig. 7 is a cross-sectional view of the heating unit shown in fig. 5; FIG. 8 is a schematic diagram of an embodiment of a heat generating seat as shown in FIG. 6; FIG. 9 is a schematic structural view of an embodiment of the second seal as shown in FIG. 6; FIG. 10 is a schematic view of a second embodiment of a heating unit provided herein; fig. 11 is a structural exploded view of the heating unit shown in fig. 10; fig. 12 is a cross-sectional view of the heating unit shown in fig. 10; fig. 13 is a schematic structural view of an embodiment of the body portion as shown in fig. 11.

In the present application, theheat generating unit 30 includes anairway tube assembly 31, aheat generating seat 32, and aheat generating assembly 33. Wherein theairway tube assembly 31 defines a first accommodating cavity A1, and the top end of the first accommodating cavity A1 is an open end; theheating seat 32 is arranged in the first accommodating cavity A1 and is fixed at the bottom of the first accommodating cavity A1; theheating component 33 is arranged in the first accommodating cavity A1 and is fixed at one end of theheating seat 32, which is away from the bottom of the first accommodating cavity A1; theheat generating component 33 has a receivingcavity 330 for receiving the aerosol-generatingarticle 200, the receivingcavity 330 being in communication with the open end such that the aerosol-generatingarticle 200 can be inserted into the receivingcavity 330 from the open end, thereby enabling the heat generating component to heat the aerosol-generatingarticle 200.

Specifically, theheating unit 30 provided by the application has high modularization degree, theheating unit 30 has a simple structure, and fewer parts, so that the size of the product is smaller, the number and the size of the parts of theaerosol generating device 100 can be reduced, and the assembly is convenient.

Referring to fig. 5 to 9, aheat generating unit 30 according to a first embodiment of the present application is provided. Theheat generating component 33 in theheat generating unit 30 provided in the first embodiment of the present application is a tubular peripheral heat generating component for resistive heating, and theheat generating component 33 includes aheat generating tube 331 and a heat generating circuit (not shown). Specifically, theheat tube 331 is a hollow column and theheat tube 331 defines a receivingcavity 330; the heat generating circuit is disposed on the inner surface and/or the outer surface of theheat generating tube 331. The heat-generating circuit is electrically connected to thepower supply assembly 40 for generating heat under energized conditions to heat the aerosol-generatingarticle 200.

Referring to fig. 8, in one implementation of the present embodiment, theheat generating base 32 includes anannular side wall 321 and a bottom wall (not labeled); theannular side wall 321 and the bottom wall of theheat generating seat 32 enclose a mountingcavity 320, the mountingcavity 320 being adapted to receive at least part of thesubstrate section 1 of the aerosol-generatingarticle 200 for securing the aerosol-generatingarticle 200.

Further, referring to fig. 7, theheat generating unit 30 may further include a detectingdevice 34, where the detectingdevice 34 is electrically connected to thepower source assembly 40, and the detectingdevice 34 is disposed on the outer side of theheat generating base 32, for detecting whether the aerosol-generatingarticle 200 is inserted into the mountingcavity 320, and thepower source assembly 40 controls theheat generating assembly 33 to heat the aerosol-generatingarticle 200 according to the insertion state of the aerosol-generatingarticle 200, so as to avoid dry burning of theheat generating assembly 33, resulting in reduced service life and other unsafe conditions. Wherein the detection means 34 may detect the inserted state of the aerosol-generatingarticle 200 based on a detection scheme of resistive strain detection, capacitive strain detection or inductive strain detection.

In an implementation manner of this embodiment, the outer side surface of thesubstrate segment 1 accommodated in theinstallation cavity 320 is wrapped with a metal foil (such as an aluminum foil, a copper foil, etc.), thedetection device 34 is disposed outside theheat generating seat 32, for example, thedetection device 34 is disposed on the outer surface of theannular sidewall 321 or the outer surface of the bottom wall of theheat generating seat 32, and thedetection device 34 detects the insertion state of the aerosol-generatingarticle 200 by detecting the metal foil. Specifically, thepower supply assembly 40 recognizes the insertion and extraction operation of the aerosol-generatingarticle 200 by detecting the electrical quantity of thedevice 34, and realizes the heating self-start, self-stop, power change, and the like.

Referring to fig. 6, in one implementation of the present embodiment, theairway tube assembly 31 includes anairway tube 311, an airway tubetop seat 312, and anairway tube base 313, wherein theairway tube 311 has a first receiving cavity A1, or theairway tube 311, the airway tubetop seat 312, and theairway tube base 313 define the first receiving cavity A1. Specifically, theairway tube 311 is hollow cylindrical and has opposite top and bottom ends; the top end of theair passage tube 311 is covered by the air passage tubetop seat 312, the air passage tubetop seat 312 is provided with a first through hole H1, the air passage tubetop seat 312 is used as the opening end of the first accommodating cavity A1, and the opening of theaccommodating cavity 330 is arranged corresponding to the first through hole H1, so that the aerosol-generatingproduct 200 can be inserted into theaccommodating cavity 330 from the first through hole H1; the airpassage pipe base 313 covers the bottom end of theair passage pipe 311 and is fixedly connected with theheating seat 32.

When the aerosol-generatingarticle 200 is inserted into theaccommodating cavity 330, the extending direction of the aerosol-generatingarticle 200 is the axial direction X of the aerosol-generatingarticle 200, theheat generating unit 30, and the aerosol-generatingdevice 100, the sidewall of theairway tube base 313 has afirst abdication portion 3130 extending along the axial direction X and penetrating theairway tube base 313, the outer side surface of the heat generating base 32 (the outer side surface of the annular sidewall 321) has asecond abdication portion 322 disposed corresponding to thefirst abdication portion 3130, and the electrical leads of theheat generating component 33 pass through thefirst abdication portion 3130 and thesecond abdication portion 322 to be electrically connected with thepower supply component 40. Thefirst abdication portion 3130 may be a through hole on a side wall of theairway tube base 313, or thefirst abdication portion 3130 may be a groove on an outer surface of the side wall of theairway tube base 313.

With continued reference to fig. 8, in an implementation manner of the present embodiment, an outer side surface of a top end of theannular sidewall 321 of theheat generating seat 32 has a firstannular flange 3211, and thesecond abdication portion 322 is a notch on the firstannular flange 3211. Further, when theheat generating base 32 is mounted, the outer side surface of theheat generating base 32 has afirst stopper 323, and the inner side surface of the airduct tube assembly 31 has a second stopper (not shown), and when theheat generating base 32 is connected to theair duct tube 311, thefirst stopper 323 is engaged with the second stopper. One of the first limitingportion 323 and the second limiting portion is a clamping groove, and the other one is a protrusion. In this embodiment, theair duct 311 is used as a side wall of theair duct assembly 31, the first limitingportion 323 is a slot formed by a notch formed in the firstannular flange 3211 and spaced from thesecond abdicating portion 322, and the second limiting portion is a protrusion extending along the axial direction X and provided on an inner side surface of theair duct 311. When theheating seat 32 is installed, the second limiting part is clamped into the first limitingpart 323, theheating seat 32 is pushed to a designated position along the second limiting part, and the first limitingpart 323 is clamped and connected with the second limiting part, so that the first limitingpart 323 also plays a role in preventing rotation of theheating seat 32.

Referring to fig. 5, in an implementation manner of the present embodiment, the outer surface of the sidewall of theair duct 311 further has a third limitingportion 3110, and the third limitingportion 3110 may be a groove or a protrusion, where the groove or the protrusion is used to implement a clamping fixation with thehousing 10. The specific structure of thethird stopper 3110 is not limited, as long as the third stopper can be fixed to thehousing 10.

With continued reference to fig. 6, in one implementation of the present embodiment, theheat generating unit 30 further includes at least afirst sealing member 301, asecond sealing member 302, and athird sealing member 303, where thefirst sealing member 301 is disposed between the air ducttop seat 312 and the top end of theair duct 311, and is used for sealing connection between the air ducttop seat 312 and theair duct 311; thesecond sealing member 302 is disposed between theairway tube base 313, theheating seat 32 and the bottom end of theairway tube 311, and is used for realizing sealing connection among theairway tube base 313, theheating seat 32 and theairway tube 311; athird seal 303 is provided on the airway tubetop seat 312 and around the first through hole H1 for sealing when the aerosol-generatingarticle 200 is inserted. The material of thefirst seal 301 and thesecond seal 302 may be silicone, rubber or other flexible material to achieve a seal at the component connection.

Of course, other sealing members are also included in theheat generating unit 30 for airtight connection between the components, which will not be described herein.

In one implementation of the present embodiment, the top surface of the top end of theair channel tube 311 has afirst groove 3111, the radial cross section of thefirst groove 3111 is circular, the bottom wall of thefirst groove 3111 has a plurality ofprotrusions 3112, the plurality ofprotrusions 3112 are annularly arranged and coaxially arranged with the sidewall of thefirst groove 3111, the bottom wall of thefirst groove 3111 has a second through hole H2 corresponding to the first through hole H1, so that the aerosol-generatingarticle 200 is inserted into the first accommodating cavity A1 and theaccommodating cavity 330 through the first through hole H1 and the second through hole H2; wherein, the second through hole H2 is located inside the ring shape surrounded by the plurality ofbumps 3112. Thefirst seal 301 is annular and has an "L" shape in cross section (see fig. 7), and thefirst seal 301 includes a first seal 3011 and a second seal 3012 perpendicular to the first seal 3011, the first seal 3011 being disposed between a bottom surface of the airwaytube top holder 312 and a top surface of a side wall of thefirst groove 3111, the second seal 3012 being disposed between the side wall of thefirst groove 3111 and the plurality ofprotrusions 3112. Specifically, the unique design of thefirst sealing member 301 can reduce the size of thefirst sealing member 301 without affecting the sealing effect thereof, and thus can reduce the size of the entireheat generating unit 30.

Referring to fig. 9, thesecond sealing member 302 includes athird sealing portion 3021 and afourth sealing portion 3022, thethird sealing portion 3021 is disposed between the top surface of theairway tube base 313 and the bottom surface of theheat generating seat 32, and thefourth sealing portion 3022 is disposed between the outer side surface of theairway tube base 313 and the inner side surface of theairway tube 311. Thethird sealing portion 3021 has a firstspace avoiding portion 3023 corresponding to thefirst abdicating portion 3130, so that the electrical lead of theheat generating component 33 passes through thesecond abdicating portion 322, the firstspace avoiding portion 3023, and thefirst abdicating portion 3130 to be electrically connected with thepower supply component 40.

In one implementation of the present embodiment, the contact surface of thefourth sealing part 3022 and theairway tube 311 is an inclined surface, thereby increasing the contact area and the contact reliability.

In one implementation of the present embodiment, the surfaces of the first sealing portion 3011, the second sealing portion 3012, thethird sealing portion 3021, and thefourth sealing portion 3022 have small convex rings, so that the sealing effect and the contact reliability of the contact surface are improved.

Referring to fig. 7, in one implementation of the present embodiment, theheat generating unit 30 further includes aheat insulating material 35, and theheat insulating material 35 is filled between theheat generating component 33 and theair duct component 31, so as to prevent heat generated by theheat generating component 33 from being transferred to thehousing 10, thereby affecting the user experience or scalding the user. And to avoid heat generated by theheat generating component 33 from being transferred to other components in theaerosol generating device 100, affecting the operation of the other components.

Theheat insulating material 35 may be any of various conventional materials having heat insulating function, such as aerogel, asbestos, etc. In this embodiment, theinsulation material 35 is an aerogel and a height Wen Jiaobu wrapped around the outside of the aerogel, the height Wen Jiaobu being used to prevent the aerogel from scattering.

Referring to fig. 10-13, aheat generating unit 30 according to a second embodiment of the present application is provided, wherein theheat generating unit 30 according to the second embodiment of the present application has substantially the same structure as theheat generating unit 30 according to the first embodiment, and the difference is that, referring to fig. 11 and 12, aheat generating component 33 in theheat generating unit 30 according to the second embodiment is a tube-type peripheral heat generating component for electromagnetic heating, and theheat generating component 33 includes aheat generating tube 331 and anelectromagnetic coil 332. Specifically, theheat tube 331 is a hollow column, and theheat tube 331 defines a receivingcavity 330; theelectromagnetic coil 332 is sleeved outside theheating tube 331 and is spaced from theheating tube 331. Theelectromagnetic coil 332 is electrically connected to thepower supply assembly 40, and is configured to generate a magnetic field under an energized condition, theheat generating tube 331 is a metalheat generating tube 331, and theheat generating tube 331 generates heat by eddy currents in the magnetic field to heat the aerosol-generatingarticle 200.

In one implementation of the present embodiment, theheating component 33 further includes an insulatingtube 333 disposed in the first accommodating cavity A1, where the insulatingtube 333 is sleeved outside theheating tube 331 and is disposed coaxially with theheating tube 331; theelectromagnetic coil 332 is sleeved outside the insulatingtube 333 to fix theelectromagnetic coil 332.

Of course, in other embodiments, theelectromagnetic coil 332 may be fixed to the inner surface of theair passage pipe 311, or other components, which is not limited herein.

The insulatingtube 333 may be only sleeved on the outer side of theheating tube 331 and fixedly connected to the inner side of theair passage tube 311, or the insulatingtube 333 may be sleeved on the outer side of theheating tube 331 and the outer side of theheating seat 32 and fixedly connected to the inner side of theair passage tube 311. In the present embodiment, the insulatingtube 333 is hollow and columnar, the insulatingtube 333 is sleeved on the outer side of theheating tube 331 and the outer side of theheating seat 32, the outer side surface of the insulatingtube 333 is provided with a secondannular flange 3330, and the insulatingtube 333 is fixedly connected with the inner side surface of theair passage tube 311 through the secondannular flange 3330.

Referring to fig. 12, in one implementation of the present embodiment, theheat insulating material 35 is filled between theheat generating tube 331 and the insulatingtube 333, between theelectromagnetic coil 332 and theair passage tube 311, and outside theair passage tube 311, so as to achieve multiple heat insulation and improve the heat insulating effect of theaerosol generating device 100.

In an implementation manner of this embodiment, theheating unit 30 further includes aferrite tube 36, theferrite tube 36 is sleeved on the outer side of theelectromagnetic coil 332, and theferrite tube 36 is used for limiting the magnetic field of theelectromagnetic coil 332, so as to concentrate the magnetic field generated by theelectromagnetic coil 332 to theheating tube 331, and improve the heating effect of theheating tube 331.

In an implementation manner of this embodiment, theheating unit 30 further includes aheat homogenizing pipe 37 sleeved on the outer surface of theair duct assembly 31, and theheat homogenizing pipe 37 is used for dispersing heat transferred from theheating assembly 33 to theair duct assembly 31. Specifically, the temperature of the portion of theair duct 311 corresponding to theheating element 33 is relatively high, and the temperature of the other portion is relatively low, and the heat-homogenizingpipe 37 is used as the outermost layer of theheating unit 30, so that the heat from theheating element 33 can be transmitted outwards by the heat-homogenizingpipe 37, and the heat is more dispersed, thereby avoiding adverse effects caused by local overheating. The material of theheat homogenizing pipe 37 is a material with better heat conducting performance, such as graphite, metal, heat conducting silicone grease, etc.

Specifically, theheat generating unit 30 provided in the first and second embodiments of the present application has the following advantages: first, theheat generating unit 30 has a high modularization degree, and theheat generating unit 30 has a simple structure and fewer parts, so that the size of the product is smaller, the number and size of the parts of theaerosol generating device 100 can be reduced, and the assembly is convenient. Secondly, the detectingdevice 34 is provided in theheat generating unit 30, and the detectingdevice 34 detects the insertion state of the aerosol-generatingarticle 200 to perform operations such as self-starting, self-stopping, and power variation. Thirdly, theheat insulation material 35 is arranged in theheating unit 30, so that heat generated on theheating component 33 can be prevented from being transferred out, and the use experience of a user is improved; and the outermost layer of theheating unit 30 is provided with aheat homogenizing pipe 37, and theheat homogenizing pipe 37 can disperse heat and avoid adverse effects caused by local overheating. Fourth, the junction between each part in theheating unit 30 is provided with a sealing member, so that the sealing connection of the junction of each part is realized, and the air tightness of the product is improved.

Referring to fig. 14-20, fig. 14 is a schematic view of the airflow direction of the first embodiment of the region a as in fig. 4; FIG. 15 is a schematic view of the flow direction of the air flow of the second embodiment shown as zone A in FIG. 4;

FIG. 16 is a schematic view of the airflow direction of the third embodiment of the area A in FIG. 4; FIG. 17 is a schematic view of the flow direction of the air flow of the fourth embodiment shown as zone A in FIG. 4; FIG. 18 is a schematic view of the airflow direction of a fifth embodiment of the area A in FIG. 4; FIG. 19 is a schematic view of the airflow direction of a sixth embodiment of the area A in FIG. 4; fig. 20 is a schematic view of the airflow direction of a seventh embodiment of the region a in fig. 4.

In the third embodiment of the present application, the chamber wall of the first accommodating chamber A1 has an air flow channel B3, a first end of the air flow channel B3 is in fluid communication with the outside air or the first aerosol channel B2, and a second end of the air flow channel B3 is in communication with the first accommodating chamber A1. So that the external air or the first aerosol enters the first accommodating cavity A1 through the air flow channel B3, and then enters the aerosol-generatingproduct 200 arranged in the first accommodating cavity A1 through the first accommodating cavity A1, and is mixed with the second aerosol generated by the aerosol-generatingproduct 200 to form mixed aerosol. Specifically, theheating unit 30 provided in this embodiment can heat the tubular peripheral ring of the aerosol-generatingarticle 200, and simultaneously can introduce external air or the first aerosol into the aerosol-generating article to mix with the second aerosol generated in the aerosol-generatingarticle 200 to form a mixed aerosol, and because the first aerosol is mixed with the second aerosol in the aerosol-generating article, the taste of the mixed aerosol is better, and the taste requirement of the user can be met, thereby improving the user experience.

For convenience of description, the airflow passage B3 provided in this embodiment is described on the basis of theheat generating unit 30 described in the second embodiment, and the airflow passage B3 is used to introduce the first aerosol into the aerosol-generatingarticle 200.

Referring to fig. 2, 9 and 14, in one implementation of the present embodiment, the air flow channel B3 includes only the first air flow channel B31 disposed at the bottom wall of the first accommodating cavity A1. Specifically, theair duct base 313 covers the bottom end of the air duct 311 (the body 3113) to serve as the bottom wall of the first accommodating cavity A1, theair duct base 313 has a first air flow channel B31, the first air flow channel B31 penetrates theair duct base 313, the first end of the first air flow channel B31 is communicated with the first aerosol channel B2, and the second end of the first air flow channel B31 is communicated with the first accommodating cavity A1. And the bottom wall of theheating seat 32 has a third through hole (not shown) communicating with the second end of the first air flow channel B31, thethird sealing portion 3021 has a fourth through hole H4 corresponding to the third through hole, the bottom wall of thesubstrate segment 1 has a first air inlet hole D1, and when the aerosol-generatingarticle 200 is inserted into the first accommodating cavity A1, the fourth through hole H4 corresponds to the first air inlet hole D1. In a state where the aerosol-generatingdevice 100 is operated, the first aerosol generated in theatomizer 20 is introduced into the aerosol-generatingarticle 200 through the atomizing passage B1, the first aerosol passage B2, the first air flow passage B31, the third through-hole, the fourth through-hole H4, and the first air intake hole D1 in this order. And the first aerosol is introduced from the bottom of thesubstrate section 1 to participate in the generation of the second aerosol, and can be fully mixed with the second aerosol generated by thesubstrate section 1, so that the taste is better, and the use experience of a user is improved.

Referring to fig. 15, in one implementation of the present embodiment, the airflow channel B3 includes a first airflow channel B31 located at a bottom wall of the first accommodating cavity A1 and a second airflow channel B32 located at a side wall of the first accommodating cavity A1. Specifically, theair duct base 313 is used as a bottom wall of the first accommodating cavity A1, theair duct 311 is used as a side wall of the first accommodating cavity A1, the first air flow channel B31 is arranged on theair duct base 313, a first end of the first air flow channel B31 is communicated with the first aerosol channel B2, a second end of the first air flow channel B31 is communicated with a first end of the second air flow channel B32, and the second air flow channel B32 is also communicated with the first accommodating cavity A1.

The first airflow channel B31 includes an axial airflow channel B311 along the axial direction X and a lateral airflow channel B312 along a direction perpendicular to the axial direction X, a first end of the axial airflow channel B311 is communicated with the first aerosol channel B2, the axial airflow channel B311 is also communicated with a first end of the lateral airflow channel B312, and a second end of the lateral airflow channel B312 is communicated with a first end of the second airflow channel B32.

The second air flow channel B32 may be formed by opening a mold in the side wall of the first accommodating cavity A1, and the second air flow channel B32 may be formed by matching components forming the side wall of the first accommodating cavity A1. In this embodiment, referring to fig. 6, theair passage pipe 311 is a side wall of the first housing chamber A1, or theair passage pipe 311 has the first housing chamber A1, specifically, theair passage pipe 311 includes abody portion 3113 and apackage portion 3115. Thebody portion 3113 is hollow and columnar, thebody portion 3113 is used as a side wall of the first accommodating cavity A1, or thebody portion 3113 is provided with the first accommodating cavity A1, the inner side surface of thebody portion 3113 is provided with a second limiting portion, and the outer side surface of thebody portion 3113 is provided with a firstair guide groove 3114 extending from one end of thebody portion 3113 to the other end; the sealingportion 3115 covers the firstair guide slot 3114, and cooperates with the firstair guide slot 3114 to form a second air flow channel B32.

The firstair guide groove 3114 may be provided along the axial direction X of thebody portion 3113, and the firstair guide groove 3114 may be provided by bending along the axial direction X, which is not limited herein. In this embodiment, the firstair guide groove 3114 is disposed along the axial direction X in a straight line to facilitate reducing the suction resistance, and thepackage portion 3115 includes acover plate 3116 and asealing ring 3117, thesealing ring 3117 may be made of silica gel, rubber or other flexible material, and thecover plate 3116 may be made of plastic, ceramic, metal or other material with a certain rigidity. In this embodiment, thesealing ring 3117 is disposed around the firstair guide slot 3114 and between thecover plate 3116 and thebody portion 3113, thecover plate 3116 is made of sheet metal and covers the firstair guide slot 3114, and thecover plate 3116 and thebody portion 3113 clamp thesealing ring 3117 to seal the second air flow channel B32. In a specific embodiment, the firstair guide groove 3114 has a plurality of limitingprotrusions 3118 at two sides along the axial direction X, thecover plate 3116 has a plurality of fifth through holes H5 with the same number as the plurality of limitingprotrusions 3118, and when thecover plate 3116 covers the firstair guide groove 3114, the plurality of limitingprotrusions 3118 are engaged and fixed with the plurality of fifth through holes H5.

Specifically, compare when traditional air current passageway B3's structure uses single plastic/five metals structure, size and volume are big for complete machine product size is too big, in addition, the mould shaping difficulty, and the yield is low, unable mass production's problem, the air current passageway B3's that this application provided structure adopts plastic (air flue pipe material), silica gel and sheetmetal combination mode to seal, has reduced the structural dimension ofair flue pipe 311, is favorable to the product miniaturization, improves competitiveness.

Referring to fig. 9, 13 and 14, a bottom wall of the firstair guide groove 3114 near one end of theair duct base 313 has a first air vent E1 communicating with the lateral air duct B312, and the bottom wall of the firstair guide groove 3114 further has a second air vent E2 spaced from the first air vent E1, where the second air vent E2 communicates with the first accommodating cavity A1, so that the second air flow channel B32 communicates with the first accommodating cavity A1. Thefourth sealing part 3022 has a sixth through hole H6 communicating with the second end of the lateral air passage B312 and the first air hole E1, theheating component 33 has a first air passing channel F1 communicating with the second air hole E2, and the sidewall of thesubstrate segment 1 has a second air inlet D2. In this embodiment, the first gas passing channel F1 transversely penetrates the secondannular flange 3330. When the aerosol-generatingarticle 200 is inserted into the first receiving cavity A1, the first air passing channel F1 is disposed in correspondence with the second air inlet hole D2. In a state in which the aerosol-generatingdevice 100 is operated, the first aerosol generated in theatomizer 20 is introduced into the aerosol-generatingarticle 200 through the atomizing passage B1, the first aerosol passage B2, the first air flow passage B31, the sixth through hole H6, the first ventilation hole E1, the second air flow passage B32, the second ventilation hole E2, the first air passage F1, and the second air intake hole D2 in this order. And the first aerosol is introduced from the side part of thesubstrate section 1 to participate in the generation of the second aerosol, and can be fully mixed with the second aerosol generated in thesubstrate section 1, so that the use experience of a user is improved.

The number of the firstair guide grooves 3114 may be one or more, and the number of thepackaging parts 3115 is the same as the number of the firstair guide grooves 3114, so as to form one or more second air flow channels B32 in one-to-one matching with the firstair guide grooves 3114. Accordingly, the number of the lateral air passages B312 is the same as the number of the firstair guide grooves 3114, and the number of the axial air passages B311 is one, and the first ends of one or more lateral air passages B312 communicate with the second ends of the same axial air passage B311. Specifically, referring to fig. 17, the first ends (ends near the first aerosol passage B2) of the plurality of air flow passages B3 are shared, and the second ends of the plurality of air flow passages B3 are disposed at the same height.

It should be noted that, each of the firstair guide grooves 3114 has a first ventilation hole E1 and a second ventilation hole E2, and when the number of the firstair guide grooves 3114 is the same as the number of the lateral air passages B312 and is plural, the plurality of lateral air passages B312 are in one-to-one correspondence with the plurality of second air flow passages B32 through the plurality of first ventilation holes E1, and the plurality of second air flow passages B32 are in one-to-one correspondence with the first receiving cavity A1 through the plurality of second ventilation holes E2.

In order to make the first aerosol and the second aerosol generated in the aerosol-generatingarticle 200 mix uniformly, reduce the resistance to suction and improve the user experience, the number of the airflow channels B3 is set to be multiple, and the multiple airflow channels B3 are uniformly arranged along the cavity wall of the first accommodating cavity A1.

Referring to fig. 17, in an implementation manner of the present embodiment, a cavity wall of the first accommodating cavity A1 is provided with a plurality of airflow channels B3 communicated with the first accommodating cavity A1, path lengths of the plurality of airflow channels B3 are different, first ends of the plurality of airflow channels B3 are communicated with the first aerosol channel B2, and second ends of the plurality of airflow channels B3 are arranged at the same height. It will be appreciated that the time for the aerosol-generatingarticle 200 to generate the second aerosol is longer than the time for theatomizer 20 to generate the first aerosol, due to the need for preheating the aerosol-generatingarticle 200 before generating the aerosol, under the condition that theheat generating unit 30 and theatomizer 20 are operated simultaneously. Therefore, the path lengths of the plurality of airflow channels B3 are different, the second ends of the plurality of airflow channels B3 are arranged at the same height, so that the time for the first aerosol flowing in from the first ends of the plurality of airflow channels B3 to reach the second ends is different, the first aerosol in the airflow channel B3 with short path length firstly enters theaerosol generating product 200, the first aerosol in the airflow channel B3 with long path length firstly enters theaerosol generating product 200, the first aerosol in each airflow channel B3 enters theaerosol generating product 200, and the time difference exists, so that the first aerosol and the second aerosol can be continuously and uniformly mixed, the problem of heavy proportion of the first aerosol in the initial stage of user suction is reduced, and the taste experience is improved.

When the number of the plurality of airflow channels B3 is greater than two, for example, 4, 6, etc., the path lengths of the plurality of airflow channels B3 may also be partially the same, as long as the path lengths of at least two airflow channels B3 are different, so that there is a time difference between the first aerosols in the plurality of airflow channels B3 entering the aerosol-generatingarticle 200.

Each airflow channel B3 comprises a first airflow channel B31 arranged on the bottom wall of the first accommodating cavity A1 and a second airflow channel B32 arranged on the side wall of the first accommodating cavity A1, a first end of the first airflow channel B31 is communicated with the first aerosol channel B2, a second end of the first airflow channel B31 is communicated with a first end of the second airflow channel B32, and a second end of the second airflow channel B32 is communicated with the first accommodating cavity A1; the path lengths of the plurality of first air flow channels B31 in the plurality of air flow channels B3 are different, and the path lengths of the plurality of second air flow channels B32 in the plurality of air flow channels B3 are the same. The air flow channels B3 may be independently disposed one by one, or the first ends of the air flow channels B3 may be shared.

In order to achieve the effect of continuously and uniformly mixing the first aerosol and the second aerosol, in the present embodiment, the first ends of the plurality of air flow channels B3 are shared, that is, the number of the axial air channels B311 is one, the number of the transverse air channels B312 is a plurality, and the number of the second air flow channels B32 is the same as the number of the transverse air channels B312. As shown in fig. 17, the path lengths of the plurality of transverse air channels B312 are different, the path lengths of the plurality of second air flow channels B32 are the same, and the heights of the second ends of the plurality of second air flow channels B32 are the same. It can be understood that, in the present embodiment, the axial air passage B311 is disposed not coaxially with the first receiving cavity A1, that is, the axial air passage B311 is offset from the axis of the bottom wall of theair passage tube 311, so that the path lengths from the plurality of lateral air passages B312 to the second air passage B32, which are communicated with the axial air passage B311, are different, while the path lengths of the plurality of second air passages B32 are the same and the heights of the second ends of the plurality of second air passages B32 are the same, so that the path lengths of the plurality of air passages B3 constituted by the plurality of first air passages B31 and the plurality of second air passages B32 are different.

Of course, in other embodiments, the axial air passage B311 may be disposed to coincide with the axis of the bottom wall of theair passage tube 311, the path lengths of the plurality of transverse air passages B312 are the same, and the second ends of the plurality of second air flow passages B32 are the same but have different path lengths, for example, some of the plurality of second air flow passages B32 are designed linearly along the axial direction X, and other portions are designed to be folded, so that the path lengths of the plurality of air flow passages B3 formed by the plurality of first air flow passages B31 and the plurality of second air flow passages B32 are different.

In this embodiment, the axial air passage B311 further penetrates through the airpassage tube base 313, and is directly communicated with the first accommodating cavity A1 through the third through hole, and further is communicated with the bottom of thesubstrate segment 1 through the fourth through hole H4 and the first air inlet hole D1.

Specifically, referring to fig. 16 and 17, the axial air passage B311 includes a first axial air passage B3111 and a second axial air passage B3112 that are not coaxially disposed, and the first axial air passage B3111 is coaxially disposed and communicates with the first aerosol passage B2, the second axial air passage B3112 coincides with the axis of the bottom wall of theair passage 311, the second axial air passage B3112 is coaxially disposed and communicates with the first receiving cavity A1, the plurality of lateral air passages B312 are directly communicated with the first axial air passage B3111, the path lengths of the plurality of second air flow passages B32 are the same, and the heights of the second ends of the plurality of second air flow passages B32 are the same. It can be appreciated that, since the second axial air passage B3112 is offset from the axis of the bottom wall of theair passage pipe 311, the path lengths from the plurality of lateral air passages B312 directly communicating with the first axial air passage B3111 to the second air passage B32 are different, while the path lengths of the plurality of second air passages B32 are the same and the heights of the second ends of the plurality of second air passages B32 are the same, so that the path lengths of the plurality of air passages B3 constituted by the plurality of first air passages B31 and the plurality of second air passages B32 are different.

Referring to fig. 18, in one implementation of the present embodiment, the airflow channel B3 includes a first airflow channel B31, a second airflow channel B32, and a third airflow channel B33 located at the bottom wall of the first accommodating cavity A1. The first airflow channel B31 and the second airflow channel B32 are the same as the first airflow channel B31 and the second airflow channel B32 provided in the above embodiments, and are not described herein. The third air flow channel B33 is disposed on the air passage pipetop seat 312, or the third air flow channel B33 is formed by the top end of theair passage pipe 311 and the air passage pipetop seat 312 in a matching manner. The third air flow passage B33 may be formed according to actual needs.

In this embodiment, the top end of theair duct base 312 and the top end of thebody 3113 are further matched to form a third air flow channel B33, and one end of the firstair guide groove 3114 near thetop end 312 of the air duct base is provided with a third air vent E3, the third air flow channel B33 is communicated with the second air flow channel B32 through the third air vent E3, and the third air flow channel B33 is communicated with the first accommodating cavity A1.

Specifically, referring to fig. 6 and 18, thefirst groove 3111 on the top surface of the top end of thebody portion 3113 serves as a second air guide groove, that is, the radial cross section of the second air guide groove is circular, the bottom wall of the second air guide groove has a second through hole H2 corresponding to the first air vent E1, the air ducttop seat 312 covers the second air guide groove and cooperates with the second air guide groove to form a third air flow channel B33, and the second through hole H2 surrounded by the third air flow channel B33; the third air vent E3 penetrates through the bottom wall of the firstair guide groove 3114 and the bottom wall of the second air guide groove and is arranged at intervals with the second through hole H2, the third air flow channel B33 is communicated with the second air flow channel B32 through the third air vent E3, and the third air flow channel B33 is communicated with the first accommodating cavity A1 through the second through hole H2. In this embodiment, the third airflow channel B33 is annular, and part of the first aerosol flowing into the third airflow channel B33 from the second airflow channel B32 fills the entire third airflow channel B33 around the annular shape, but does not directly enter the aerosol-generatingarticle 200 in communication with the third airflow channel B33, so as to facilitate continuous mixing of the first aerosol and the second aerosol. Specifically, the third airflow channel B33 forms a buffer space, so that the first aerosol can enter the aerosol-generatingarticle 200 uniformly after being buffered in the third airflow channel B33, so as to be mixed with the second aerosol uniformly, and the use experience of the user is improved.

The side wall of thehollow section 2 has a third air inlet D3, and when the aerosol-generatingarticle 200 is inserted into the first accommodating cavity A1, the third air flow channel B33 is disposed corresponding to the third air inlet D3, and in a state in which the aerosol-generatingdevice 100 is operated, the first aerosol generated in theatomizer 20 is introduced into the aerosol-generatingarticle 200 through the atomization channel B1, the first aerosol channel B2, the first air flow channel B31, the sixth through hole H6, the first air vent E1, the second air flow channel B32, the third air vent E3, the third air flow channel B33, and the third air inlet D3 in sequence. The first aerosol is introduced from the side part of thehollow section 2, so that the first aerosol is mixed with the second aerosol in a low-temperature area above thesubstrate section 1, and the first aerosol is prevented from being heated again in thesubstrate section 1 to become smell, so that the first aerosol has pure taste; in addition, air gaps among solid aerosol-generating substrate particles in thesubstrate section 1 can be prevented from being blocked by air inlet from thesubstrate section 1, and the aerosol-generatingproduct 200 is heated under the anaerobic or anoxic condition, so that the generated second aerosol is free of impurities and purer, the taste of the mixed aerosol is purer, and the use experience of a user is improved.

Referring to fig. 19, in this embodiment, a first air flow channel B31 may be further provided to communicate with the bottom of thesubstrate segment 1 through the third through hole, the fourth through hole H4, and the first air intake hole D1; and/or the second air flow channel B32 is also in communication with the side of thesubstrate segment 1 through the second ventilation hole E2, the first air passage F1 and the second air inlet hole D2. The first aerosol is respectively introduced from thesubstrate section 1 and thehollow section 2, so that the first aerosol and the second aerosol are respectively mixed in a high-temperature area and a low-temperature area, the taste requirements of different users are met, and the use experience of the users is improved.

In this embodiment, the third airflow channels B33 are annular, the number of the second airflow channels B32 may be plural, the plural second airflow channels B32 are uniformly arranged on the side wall of theair duct 311, and the third airflow channels B33 are communicated with the plural second airflow channels B32 through plural third air vents E3.

Specifically, the aerosol-generatingdevice 100 provided by the present application, the aerosol-generatingdevice 100 is provided with a first accommodating cavity A1 for accommodating the aerosol-generatingarticle 200 and a second accommodating cavity A2 for accommodating theatomizer 20; the cavity wall of the first accommodating cavity A1 is provided with an air flow channel B3 communicated with the first accommodating cavity A1; the second accommodating cavity A2 is provided with a first aerosol channel B2 communicated with the atomization channel B1 and the air flow channel B3 in theatomizer 20, and when theaerosol generating device 100 works, the first aerosol generated in theatomizer 20 sequentially passes through the atomization channel B1, the first aerosol channel B2 and the air flow channel B3 to enter the first accommodating cavity A1, and then enters theaerosol generating product 200 from the bottom of thesubstrate section 1, the side of thesubstrate section 1 and/or the side of thehollow section 2, so as to be mixed with the second aerosol generated in theaerosol generating product 200 to form mixed aerosol, so that the generated mixed aerosol has better taste, and the user experience is improved.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.

Claims (19)

1. A heat generating unit, comprising:

the airway tube assembly is provided with a first accommodating cavity, and the top end of the first accommodating cavity is an open end;

the heating seat is arranged in the first accommodating cavity and is fixed at the bottom of the first accommodating cavity;

the heating component is arranged in the first accommodating cavity and is fixed at one end of the heating seat, which is away from the bottom of the first accommodating cavity; the heat generating component has a receiving cavity for receiving an aerosol-generating article, the receiving cavity being in communication with the open end such that the aerosol-generating article can be inserted into the receiving cavity from the open end.

2. The heat generating unit of claim 1, wherein the heat generating assembly comprises:

a heating tube; the heating tube is a hollow columnar body and defines the accommodating cavity;

And the heating circuit is arranged on the inner surface and/or the outer surface of the heating tube.

3. The heat generating unit of claim 1, wherein the heat generating assembly comprises:

a heating tube; the heating tube is a hollow columnar body and defines the accommodating cavity;

and the electromagnetic coil is sleeved on the outer side of the heating tube and is arranged at intervals with the heating tube.

4. A heat generating unit as recited in claim 3, wherein said heat generating component further comprises:

the insulating tube is sleeved on the outer side of the heating tube and is coaxially arranged with the heating tube; the electromagnetic coil is sleeved on the outer side of the insulating tube.

5. A heat generating unit as recited in claim 3, wherein the heat generating unit further comprises:

and the ferrite pipe is sleeved outside the electromagnetic coil.

6. The heat generating unit of claim 1, further comprising:

a heat insulating material; the heat insulating material is filled between the heating component and the airway tube component.

7. The heat generating unit of claim 1, further comprising:

And the uniform heat pipe is sleeved on the outer surface of the airway tube assembly.

8. The heat generating unit of claim 1, wherein the heat generating base comprises annular side walls and a bottom wall; the annular side wall and the bottom wall of the heating seat enclose a mounting cavity, so that the substrate section of the aerosol-generating product can be accommodated in the accommodating cavity and the mounting cavity.

9. The heat generating unit of claim 8, further comprising:

and the detection device is arranged on the outer side of the annular side wall of the heating seat and is used for detecting the aerosol generating product.

10. The heat generating unit of claim 1, wherein the airway tube assembly comprises:

an airway tube;

the air passage pipe top seat covers the top end of the air passage pipe and is provided with a first through hole;

the air passage pipe base is used for sealing the bottom end of the air passage pipe and is fixedly connected with the heating seat;

the air passage pipe, the air passage pipe top seat and the air passage pipe base define the first accommodating cavity, the air passage pipe top seat is used as the opening end of the first accommodating cavity, and the opening of the accommodating cavity is correspondingly arranged with the first through hole.

11. The heating unit according to claim 10, wherein a top surface of a top end of the air passage pipe is provided with a first groove, a radial cross section of the first groove is circular, a bottom wall of the first groove is provided with a plurality of protrusions which are annularly arranged and coaxially arranged with a side wall of the first groove, and a bottom wall of the first groove is provided with a second through hole which is correspondingly arranged with the first through hole;

the air flue pipe with still be provided with first sealing member between the air flue pipe footstock, first sealing member include first sealing portion and with first sealing portion vertically second sealing portion, first sealing portion set up in between the bottom surface of air flue pipe footstock and the lateral wall top surface of first recess, second sealing portion set up in between the lateral wall of first recess and a plurality of the arch.

12. The heat generating unit of claim 10, wherein the sidewall of the airway tube base has a first relief extending axially therethrough, the electrical leads of the heat generating component passing through the first relief.

13. The heat generating unit of claim 10, further comprising:

The second sealing piece comprises a third sealing part and a fourth sealing part, the third sealing part is arranged between the top surface of the airway tube base and the bottom surface of the heating seat, and the fourth sealing part is arranged between the outer side surface of the airway tube base and the inner side surface of the airway tube.

14. The heat generating unit of claim 13, wherein the contact surface of the fourth sealing portion with the airway tube is a beveled surface.

15. The heating unit of claim 1, wherein the chamber wall of the first receiving chamber has an air flow passage having one end in fluid communication with the outside air or an atomizing passage of the atomizer and the other end in communication with the first receiving chamber.

16. The heating unit of claim 1, wherein the outer side surface of the heating seat is provided with a first limiting part, the inner side surface of the air passage pipe assembly is provided with a second limiting part, the first limiting part is in clamping connection with the second limiting part, and one of the first limiting part and the second limiting part is a clamping groove, and the other one is a bulge.

17. The heat generating unit of claim 1, wherein an outer side of the heat generating base has a second relief portion through which an electrical lead of the heat generating component passes.

18. An aerosol-generating device, comprising:

a housing;

a heat generating unit as claimed in any one of claims 1 to 17; the heat generating unit is for heating the aerosol-generating article to generate a second aerosol;

the power supply assembly is electrically connected with the heating assembly in the heating unit and is used for supplying power to the heating assembly and controlling the heating assembly to work.

19. An aerosol-generating device, comprising:

a housing;

a heat generating unit as claimed in any one of claims 1 to 17; the heat generating unit is for heating the aerosol-generating article to generate a second aerosol;

a nebulizer having a liquid storage chamber and a nebulization channel in fluid communication with an airflow channel in the heat generating unit, the liquid storage chamber storing a liquid aerosol-generating substrate, the nebulizer being for heating nebulization of the liquid aerosol-generating substrate to generate a first aerosol, the first aerosol being expelled through the nebulization channel to the airflow channel;

the power supply assembly is respectively and electrically connected with the heating assembly in the heating unit and the atomizing assembly in the atomizer, and is used for supplying power to the heating assembly and the atomizing assembly and controlling the heating assembly and the atomizing assembly to work.

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