CN212464912U

CN212464912U - Aerosol generating device

Info

Publication number: CN212464912U
Application number: CN202020400848.4U
Authority: CN
Inventors: 严冬君; 谢远秋; 胡瑞龙; 徐中立; 李永海
Original assignee: Shenzhen FirstUnion Technology Co Ltd
Current assignee: Shenzhen FirstUnion Technology Co Ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2021-02-05
Anticipated expiration: 2030-03-26

Abstract

The present application relates to the field of smoking articles and provides an aerosol-generating device comprising a housing having an air inlet; a mouthpiece portion having an air outlet; the air outlet and the air inlet are communicated with each other by fluid to form an air flow channel; a heater for heating a solid smoking material to generate an aerosol for smoking; the heater has a chamber for receiving a solid smoking substance, an open end and a closed end; a guide extending at least partially into the chamber; a gap between the guide portion and the heater forms part of the airflow channel, and the guide portion is used for guiding airflow in the airflow channel into the chamber. The cavity for receiving the solid smoke substance in the heater is not provided with the air holes, so that the solid smoke substance and residue particles thereof are prevented from falling out of the air holes, and peculiar smell and harmful gas are generated after the solid smoke substance and the residue particles are repeatedly heated; on the other hand, the airflow in the airflow channel is guided into the chamber through the guide part, so that more smoke can be effectively taken away, and the suction experience of a user is improved.

Description

Aerosol generating device

Technical Field

The application relates to the technical field of smoking articles, in particular to an aerosol generating device.

Background

Smoking articles such as cigarettes and cigars burn tobacco during use to produce an aerosol. Attempts have been made to provide alternatives to these tobacco-burning articles by creating products that release compounds without burning. An example of such a product is a so-called heat not burn product, which releases compounds by heating tobacco instead of burning tobacco.

Patent publication No. CN209090070U discloses an aerosol generating device comprising a ceramic based heating element and a removable smoking substance container provided in a housing, the ceramic based heating element roasting and heating a smoking substance contained in the removable smoking substance container from the bottom to generate an aerosol. Wherein, the container of holding the fuming material, bleeder vent has been seted up to its lateral wall and bottom, and inside external air got into the container through this bleeder vent, carried out the supply to the required air of heating fuming material for fuming material heating is more abundant.

However, the provision of ventilation holes in the container containing the smoking material tends to cause the particles of residue of the smoking material to fall out of the container, which can generate odors and harmful gases after repeated heating.

SUMMERY OF THE UTILITY MODEL

The application provides an aerosol generation device aims at solving the problem that the residue granule of the fuming substance that current aerosol generation device exists easily drops away from the bleeder vent on the container that holds the fuming substance.

The present application provides an aerosol-generating device comprising:

a housing having an air inlet;

a mouthpiece portion having an air outlet; the air outlet and the air inlet are communicated with each other through fluid to form an air flow channel;

a heater for heating a solid smoking material to generate an aerosol for smoking; the heater has a chamber to receive the solid smoking material, an open end and a closed end; the solid smoking material is received in or removed from the cavity through the open end; and

a guide extending at least partially into the chamber; a gap between the guide portion and the heater forms part of the airflow channel, and the guide portion is used for guiding airflow in the airflow channel into the chamber.

In one embodiment, the guide is arranged obliquely away from the longitudinal direction of the aerosol-generating device.

In one embodiment, the angle between the guide portion and the longitudinal direction is 0 ° to 60 °.

In one embodiment, the aerosol-generating device further comprises a reservoir;

the accommodating part is provided with a space for accommodating the heater, and the guide part extends to the cavity from one side end part of the accommodating part.

In one embodiment, the receiving portion includes:

a base having an inner tube and an outer tube; a length of the inner tube in an axial direction is smaller than a length of the outer tube in the axial direction to form a space accommodating the heater between one side end of the inner tube and one side end of the outer tube; the guide portion extends from one side end of the inner tube to the chamber.

In one embodiment, the inner tube is further provided at one side end with a plurality of circumferentially spaced projections abutting the open end.

In one embodiment, the outer tube has an extension portion extending from one side end portion of the outer tube to an inner surface of the housing; the air inlet is disposed below the extension.

In one embodiment, the receiving portion further comprises:

a base for fixing the heater; the base abuts against one side end of the outer pipe.

In one embodiment, the base includes a fixed portion and an abutment portion;

the fixing part is used for fixing the heater; the abutting part abuts against one side end part of the outer tube; an airflow hole is formed between the fixing part and the abutting part, so that airflow flows into the space from the outside of the accommodating part through the airflow hole.

In one embodiment, the fixing portion matches the shape of the heater, and the cross-sectional area of the fixing portion is larger than the cross-sectional area of the heater.

In one embodiment, the bottom of the fixing portion has an electrode hole through which a conductive module electrically connected to the heater can abut against the closed end.

In one embodiment, the bottom of the retainer portion further has a plurality of circumferentially spaced steps; the step abuts against the closed end, so that a gap is formed between the closed end and the bottom of the fixing part.

In one embodiment, the aerosol-generating device further comprises:

a fixed bracket accommodated in the housing; the fixing support is used for fixing a power supply assembly, and the power supply assembly is used for supplying power to the heater.

In one embodiment, the heater is an infrared heater for receiving electricity to generate heat and transferring the generated heat at least in the form of infrared radiation from the closed end to the solid smoking material received in the chamber to generate an aerosol for smoking.

According to the aerosol generating device, the cavity for receiving the solid smoke substance in the heater is not provided with the air holes, so that the solid smoke substance and residue particles thereof are prevented from falling out of the air holes, and peculiar smell and harmful gas are generated after the solid smoke substance and the residue particles are repeatedly heated; on the other hand, the airflow in the airflow channel is guided into the chamber through the guide part, so that more smoke can be effectively taken away, and the suction experience of a user is improved.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Figure 1 is a schematic diagram of an aerosol-generating device provided by an embodiment of the present application;

figure 2 is a schematic diagram of another perspective of an aerosol-generating device provided by embodiments of the present application;

figure 3 is an exploded schematic view of an aerosol-generating device provided by embodiments of the present application;

figure 4 is a schematic cross-sectional view of an aerosol-generating device provided by an embodiment of the present application;

figure 5 is a schematic view of a heater in an aerosol-generating device provided by an embodiment of the present application;

figure 6 is a schematic view of another perspective of a heater in an aerosol-generating device provided by embodiments of the present application;

figure 7 is a schematic view of a base in an aerosol-generating device provided by an embodiment of the present application;

figure 8 is a schematic view of another perspective of a base in an aerosol-generating device provided by embodiments of the present application;

figure 9 is a schematic view of a base in an aerosol-generating device provided by an embodiment of the present application;

figure 10 is a schematic view of a filter device in an aerosol-generating device provided by an embodiment of the present application;

figure 11 is a schematic view of a mouthpiece portion of an aerosol-generating device provided by an embodiment of the present application.

Detailed Description

To facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and detailed description. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "left", "right", "inner", "outer" and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-11, in an aerosol-generating device provided by an embodiment of the present application, the aerosol-generating device 100 includes a mouthpiece portion 101, a housing 102, a heater 103, receiving portions (104, 105), a fixing bracket 106, and a filter device 107.

Referring to fig. 1-4 and 11, a mouthpiece portion 101 having a mouthpiece end 1011, a coupling end 1012 and an air outlet channel (shown as part B) extending from the coupling end 1012 to the mouthpiece end 1011; the coupling end 1012 is coupled to one side end of the housing 102 and is located between an outer surface of the receiving portion (104, 105) and an inner surface of the housing 102.

A locking means for maintaining the coupled state of the coupling end 1012 and one side end portion of the housing 1012 may be provided between the coupling end 1012 and the receiving portion (104, 105) or between the coupling end 1012 and the housing 102.

The locking means may comprise, for example, a protrusion and a groove. The following structure may be utilized: the coupled state of the coupling end 1012 and the one side end portion of the housing 1012 may be maintained by maintaining a state in which the protrusion is inserted into the groove, and the protrusion may be separated from the groove by moving the protrusion by an operation button that may be pressed by a user.

In addition, the locking device may also include, for example, magnets and magnetically attracted metal pieces. If magnets are used in the locking device, magnets may be provided on one of the attachment end 1012 and the housing 1012, or the attachment end 1012 and the receiving portion (104, 105), and magnetically attracted metal may be provided on the other, or both. Specifically, as will be understood from fig. 7, the bottom surface of the open end 1012 is provided with a counterbore 1013 for receiving the first magnetic member, and the extension 1045 is provided with a counterbore 10451 for receiving the second magnetic member. The suction nozzle 101 and the housing 102 are tightly attracted together by the magnetic force between the first magnetic member and the second magnetic member, and the assembly and disassembly are simple and convenient. The number of the first magnetic members and the second magnetic members is not limited herein.

It should be noted that the mouthpiece portion 101 is not limited thereto, and it is also possible that the mouthpiece portion 101 is integrally formed with the housing 102.

The side wall of the housing 102 is opened with a plurality of air inlets 1021, and the specific number is not limited herein. The housing 102 has a charging interface 1022 on a bottom wall thereof, through which charging interface 1022 the aerosol-generating device 100 can be charged or upgraded to ensure continuous use of the aerosol-generating device 100. On the front wall of the housing 102 are provided switch buttons 1023 and indicator lights 1024, the switch buttons 1023 being used to turn the aerosol-generating device 100 on or off, the indicator lights 1024 being used to indicate status information of the aerosol-generating device 100, such as: the operating state of the aerosol-generating device 100, the battery level, etc.

A heater 103 for heating a solid smoking substance to generate an aerosol for smoking; the heater 103 has a chamber for receiving the solid smoking material, an open end and a closed end; the solid smoking material is received in or removed from the cavity through the open end.

As will be appreciated in conjunction with fig. 5-6, in one example, the heater 103 includes a substrate 1031, and an infrared heat generating component (1032, 1033, 1034).

The base 1031 has a chamber formed therein for receiving a solid smoking substance and having opposed open and closed ends; the solid smoking material may be received in or removed from the chamber through the open end. The substrate 1031 may be cylindrical, prismatic, or other cylindrical shape. The substrate 1031 is preferably cylindrical, and the chamber is a cylindrical aperture in the substrate 1031, and the solid smoking substance may be heated by placing it in the chamber.

The substrate 1031 may be made of a material that is resistant to high temperature and has high infrared transmittance, including but not limited to the following materials: quartz glass, sapphire, silicon carbide, magnesium fluoride ceramic, yttria ceramic, magnesia alumina spinel ceramic, yttrium aluminum garnet single crystal, germanium single crystal, and the like. Preferably, the substrate 1031 is made of quartz glass.

The solid smoking substance can be solid smoking substances such as cigarettes, tobacco shreds, tobacco blocks, tobacco stems, tobacco paste and the like, and can also be semi-finished products or finished products such as tobacco, Chinese herbal medicines, spices and the like. In the case of a solid aerosol-forming substrate, an aerosol-forming substrate is a substrate that is capable of releasing volatile compounds that can form an aerosol. Such volatile compounds may be released by heating the aerosol-forming substrate. The aerosol-forming substrate may be adsorbed, coated, impregnated or otherwise loaded onto a carrier or support. The aerosol-forming substrate may conveniently be part of an aerosol-generating article or a smoking article.

The aerosol-forming substrate may comprise nicotine. The aerosol-forming substrate may comprise tobacco, for example may comprise a tobacco-containing material containing volatile tobacco flavour compounds which are released from the aerosol-forming substrate when heated. Preferred aerosol-forming substrates may comprise homogenised tobacco material, for example deciduous tobacco. The aerosol-forming substrate may comprise at least one aerosol-former, which may be any suitable known compound or mixture of compounds that, in use, facilitates the formation of a dense and stable aerosol and is substantially resistant to thermal degradation at the operating temperature of the aerosol-generating system. Suitable aerosol-forming agents are well known in the art and include, but are not limited to: polyhydric alcohols such as triethylene glycol, 1, 3-butanediol and glycerin; esters of polyhydric alcohols, such as glycerol mono-, di-or triacetate; and fatty acid esters of mono-, di-or polycarboxylic acids, such as dimethyldodecanedioate and dimethyltetradecanedioate. Preferred aerosol formers are polyhydric alcohols or mixtures thereof, such as triethylene glycol, 1, 3-butanediol, and most preferably glycerol.

An infrared heat generating component (1032, 1033, 1034) for receiving electrical power from the power supply component to generate heat and for transferring the generated heat at least in the form of infrared radiation from the closed end of the base 1031 to the solid smoking material received in the chamber to generate an aerosol for smoking.

In this example, no vent hole is provided on the side surface or the end surface of the closed end of the base 1031, so that on one hand, the problem of peculiar smell and harmful gas generated after the solid smoking substance and the residue particles thereof are repeatedly heated due to the solid smoking substance and the residue particles thereof falling out of the vent holes is avoided; on the other hand, the solid smoking substance is heated from the bottom of the base 1031 by infrared radiation, and thus the solid smoking substance is heated uniformly and at a high temperature rise rate.

The infrared heating component (1032, 1033, 1034) comprises an infrared electrothermal layer 1032 and a conductive module (1033, 1034).

The infrared electrothermal layer 1032 is formed on the end surface of the closed end, and may be an inner end surface or an outer end surface of the closed end, a part of the end surface or the whole end surface of the closed end, or a side surface of the substrate 1031. The preferred infrared electrothermal layer 1032 is formed on the entire outer end face of the closed end.

The infrared electrothermal layer 1032 is preferably coated on the outer surface of the closed end after fully and uniformly stirring far infrared electrothermal ink, ceramic powder and inorganic adhesive, and then drying and curing are carried out for a certain time, wherein the thickness of the infrared electrothermal layer 1032 is 30-50 μm; certainly, the infrared electrothermal layer 1032 can also be coated on the outer surface of the closed end after being mixed and stirred by tin tetrachloride, tin oxide, antimony trichloride, titanium tetrachloride and anhydrous copper sulfate according to a certain proportion; or one of a silicon carbide ceramic layer, a carbon fiber composite layer, a zirconium-titanium oxide ceramic layer, a zirconium-titanium nitride ceramic layer, a zirconium-titanium boride ceramic layer, a zirconium-titanium carbide ceramic layer, an iron-based oxide ceramic layer, an iron-based nitride ceramic layer, an iron-based boride ceramic layer, an iron-based carbide ceramic layer, a rare earth oxide ceramic layer, a rare earth nitride ceramic layer, a rare earth boride ceramic layer, a rare earth carbide ceramic layer, a nickel-cobalt oxide ceramic layer, a nickel-cobalt nitride ceramic layer, a nickel-cobalt boride ceramic layer, a nickel-cobalt carbide ceramic layer or a high-silicon molecular sieve ceramic layer; the infrared electrothermal layer 1032 can also be other material coatings that are available.

The conductive modules (1033, 1034) include a first conductive module 1033 and a second conductive module 1034 arranged at intervals, the first conductive module 1033 is arranged on the end face of the closed end, and the second conductive module 1034 is sleeved on the open end. The first and second

conductive modules

1033 and 1034 are each at least partially electrically connected to the infrared electrothermal layer 1032 so that current can flow from one of the conductive modules to the other conductive module via the infrared electrothermal layer 1032. The infrared electrothermal layer 1032 receives power from the power supply components via the first and second

conductive modules

1033, 1034 to generate heat and transfers the generated heat at least in the form of infrared radiation from the closed end to the solid smoking material received in the cavity. The polarities of the first conductive pattern 1033 and the second conductive pattern 1034 are opposite, for example: the first conductive module 1033 is a positive electrode, and the second conductive module 1034 is a negative electrode; or the first conductive module 1033 is a negative electrode and the second conductive module 1034 is a positive electrode.

In this example, the heater 103 may further include an infrared ray reflective coating (not shown in the drawings) formed on the side of the substrate 1031 to reflect infrared rays transmitted through the side of the substrate 1031.

In this example, infrared radiation generated by the infrared electrothermal layer 1032 may be partially transmitted through the sides of the substrate 1031 as the solid smoking material is heated by open-end radiation. The infrared reflective coating functions to reflect infrared light transmitted through the sides of the substrate 1031 back into the interior of the substrate 1031 to heat the solid smoking substance located in the interior of the substrate 1031. Therefore, on one hand, the effective utilization rate of infrared rays emitted by the infrared electric heating layer 1032 is improved, and the heating efficiency is improved; on the other hand, heat conduction from the side of the substrate 1031 in the direction away from the side of the substrate 1031 is prevented.

The infrared reflective coating includes at least one of a metal and a metal oxide. Specifically, the metal oxide may be one or more of gold, silver, nickel, aluminum, gold alloy, silver alloy, nickel alloy, aluminum alloy, gold oxide, silver oxide, nickel oxide, aluminum oxide, titanium oxide, zinc oxide, and cerium oxide. The infrared reflective coating has a thickness of between 0.3 μm and 200 μm.

In such an example, the heater 103 may further include a heat insulation film layer formed on the side of the substrate 1031 to at least partially prevent heat conduction from the side of the substrate 1031 in a direction away from the side of the substrate 1031.

The thermal conductivity of the heat-insulating film layer is less than 0.2W/(mK), preferably less than 0.1W/(mK), more preferably less than 0.05W/(mK), and still more preferably 0.02 to 0.04W/(mK).

The heat insulation film layer comprises heat insulation materials, and the heat insulation materials can be heat insulation glue, aerogel felt, asbestos, aluminum silicate, calcium silicate, diatomite, zirconia and the like.

Referring to fig. 3-4 and 7-9, the receiving portions (104, 105) are used for receiving the heater 103; the receiving parts (104, 105) have a first air flow channel (shown in part B in the figure) which connects the open end of the substrate 1031 and the air outlet channel of the mouthpiece part 101, and the air outlet channel of the mouthpiece part 101 and the air flow channel form an air flow channel which can be referred to as B in fig. 4.

The housing portions (104, 105) include a base 104 and a base 105. The base 104 has an inner tube 1041 and an outer tube 1042; the length of the inner tube 1041 in the axial direction is smaller than the length of the outer tube 1042 in the axial direction, so that a space for accommodating the heater 103 is formed between one end of the inner tube 1041 and one end of the outer tube 1042; the inner surface of the inner tube 1041 forms the first air flow passage.

Preferably, one side end of the inner tube 1041 has a guiding portion 1043, and the guiding portion 1043 extends from one side end of the inner tube 1041 to the chamber of the base 1031 to guide the airflow in the second airflow channel into the chamber of the base 1031 to converge at a certain position in the chamber of the base 1031, for example, a position shown by C in fig. 4.

Referring to fig. 4, through the airflow guiding function of the guiding portion 1043, an impact airflow (shown as a1 and a2 in the figure) may be formed in the chamber of the substrate 1031, which can enhance convection, effectively take away more smoke, generate a larger amount of smoke, and improve the smoking experience of the user.

Further, the guide portion 1043 is disposed obliquely away from the longitudinal direction of the aerosol-generating device (as indicated by arrow B in the figure), and may be one end of the guide portion 1043 is away from the longitudinal direction of the aerosol-generating device, or both ends of the guide portion 1043 are away from the longitudinal direction of the aerosol-generating device, and is not limited herein. The included angle between the guiding part and the longitudinal direction is 0-60 degrees, and through the design of the included angle, impact airflow can be formed in the cavity of the base body 1031, so that convection is enhanced.

Further, one side end of the inner tube 1041 further comprises a plurality of circumferentially spaced protrusions 1044, and the protrusions 1044 abut against the open end of the base 1031. Airflow may flow into the chamber of the base 1031 through the gaps between the circumferentially spaced projections 1044.

A base 105 for fixing the heater 103; the base 105 abuts against one side end of the outer tube 1042.

The base 105 includes a securing portion 1052 and an abutment 1051;

the fixing portion 1052 is used for fixing the heater 103; the abutting portion 1051 abuts against one end of the outer tube 1042; an airflow hole 1053 is formed between the fixing portion 1052 and the abutting portion 1051, so that the airflow in the portion of the second airflow channel flows into the other portion of the second airflow channel through the airflow hole 1053, i.e., flows from outside the accommodating portion (104, 105) into the space accommodating the heater 103.

The fixing portion 1052 is matched with the heater 103 in shape, and the cross-sectional area of the fixing portion 1052 is larger than that of the heater 103. Thus, the fixing portion 1052 covers the periphery of the base body 1031, and the closed end of the base body 1031 abuts against the bottom of the fixing portion 1052.

Further, the bottom of the fixing portion 1052 is further provided with an electrode hole 10521, and the conductive module 1033 electrically connected to the heater 103 can abut against the closed end of the base 1031 through the electrode hole 10521.

Further, the bottom of the standoff 1052 also has a plurality of circumferentially spaced steps 10522; the step 10522 abuts against the closed end of the base 1031 so that a gap is formed between the closed end of the base 1031 and the bottom of the fixing portion.

The gap between one side end 1061 of the fixing bracket 106 and the base 105 defines the portion of the second air flow channel (indicated by an arrow a1 or a2 in fig. 4), and the gap between the inner surface of the outer tube 1042 and the base 105 defines the other portion of the second air flow channel (indicated by an arrow a1 or a2 in fig. 4).

Further, the outer tube 1042 has an extension 1045, the extension 1045 extends from one side end of the outer tube 1042 to the inner surface of the housing 102; the air inlet 1021 is disposed between the extension 1045 and one side end 1061 of the fixing bracket 106. Thus, after passing through the air inlet 1021, the airflow can flow in along the gap between the side end 1061 of the fixed bracket 106 and the base 105; the air flow is prevented from flowing into the gap between the outer surface of the outer tube 1042 and the inner surface of the housing 102 after passing through the air inlet 1021.

Further, a seal 10421 may also be included.

The outer tube 1042 has a groove that receives at least a portion of a seal 10421. A seal 10421 disposed between an outer surface of the outer tube 1042 and an inner surface of the mouthpiece portion 101; the seal 10421 may further prevent gas flowing in from the gas inlet 1021 from flowing into the nozzle end 1011 through a gap between the outer surface of the outer tube 1042 and the inner surface of the mouthpiece portion 101.

A fixing bracket 106 for fixing the power supply component; the power supply assembly is used for supplying power to the heater 103; the power supply assembly includes a control circuit portion and a battery portion, the battery being electrically connected to the control circuit. The control circuit is provided with a charging interface 1022, a switch button 1023 and a circuit corresponding to the indicator lamp 1024. The battery may be, but is not limited to, a lithium iron phosphate (LiFePO4) battery. For example, the battery may be a lithium cobaltate (LiCoO2) battery or a lithium titanate battery. The battery may be a rechargeable battery or a disposable battery.

The aerosol-generating device 100 may further comprise a temperature sensor for sensing a real-time temperature of the substrate 1031 and transmitting the sensed real-time temperature to the control circuitry, which adjusts the magnitude of the current flowing through the infrared electrothermal layer 1032 in accordance with the real-time temperature. Specifically, when the temperature sensor detects that the real-time temperature in the substrate 1031 is low, for example, the temperature inside the substrate 1031 is lower than 150 ℃, the control circuit controls the battery to output a higher voltage to the conductive modules (1033, 1034), so as to increase the current fed into the infrared electrothermal coating 12, increase the heating power of the solid raw material, and reduce the waiting time for the user to suck the first mouth. When the temperature sensor detects that the temperature of the substrate 1031 is 150 ℃ -200 ℃, the control circuit controls the battery to output normal voltage to the conductive module (1033, 1034). When the temperature sensor detects that the temperature of the substrate 1031 is 200-250 ℃, the control circuit controls the battery to output lower voltage to the electrode; when the temperature sensor detects that the temperature inside the base 1031 is 250 ℃ or higher, the control circuit controls the battery to stop outputting the voltage to the conductive module (1033, 1034).

Referring to fig. 4, 10-11, a filtering device 107 may also be included. The filtering device 107 is disposed between the air outlet channels (shown as B in the figure) and is used for filtering solid impurities in the aerosol to prevent the solid impurities from being inhaled into a human body. The filter device 107 may be made of a stainless steel material.

The inner wall of the mouthpiece portion 101 has a plurality of protrusions 1014, the filtering means 107 has a plurality of recesses 1071 corresponding to the plurality of protrusions 1014, and the mouthpiece portion 101 and the filtering means 107 are cooperatively connected by the plurality of protrusions 1014 and the plurality of recesses 1071.

When the mouthpiece portion 101 is removed from one end of the housing 102, the filter assembly 107 may also be removed from the mouthpiece portion 101 to facilitate the user in removing debris particles from the solid material on the filter assembly 107.

It should be noted that the description of the present application and the accompanying drawings set forth preferred embodiments of the present application, however, the present application may be embodied in many different forms and is not limited to the embodiments described in the present application, which are not intended as additional limitations to the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. Moreover, the above-mentioned technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope described in the present specification; further, modifications and variations may occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.

Claims

1. An aerosol-generating device, comprising:

a housing having an air inlet;

2. An aerosol-generating device according to claim 1, wherein the guide is arranged obliquely away from the longitudinal direction of the aerosol-generating device.

3. An aerosol-generating device according to claim 2 in which the guide portion is angled from 0 ° to 60 ° to the longitudinal direction.

4. An aerosol-generating device according to any of claims 1 to 3, further comprising a containment portion;

5. An aerosol-generating device according to claim 4, wherein the receptacle comprises:

6. An aerosol-generating device according to claim 5, wherein the inner tube is further provided at one end with a plurality of circumferentially spaced projections which abut against the open end.

7. An aerosol-generating device according to claim 5 or 6, wherein the outer tube has an extension extending from one side end of the outer tube to an inner surface of the housing; the air inlet is disposed below the extension.

8. An aerosol-generating device according to claim 5 or 6, wherein the receptacle further comprises:

9. An aerosol-generating device according to claim 8, wherein the base comprises a fixing portion and an abutment portion;

10. An aerosol-generating device according to claim 9 in which the fixing portion matches the shape of the heater, the fixing portion having a cross-sectional area greater than the cross-sectional area of the heater.

11. An aerosol-generating device according to claim 10, wherein the bottom of the fixing portion has an electrode hole through which a conductive module electrically connected to the heater can abut against the closed end.

12. An aerosol-generating device according to claim 11, wherein the base of the retainer portion further has a plurality of circumferentially spaced steps; the step abuts against the closed end, so that a gap is formed between the closed end and the bottom of the fixing part.

13. An aerosol-generating device according to claim 1, further comprising:

14. An aerosol-generating device according to claim 1, wherein the heater is an infrared heater for receiving electricity to generate heat and transferring the generated heat at least in the form of infrared radiation from the closed end to the solid smoking material received in the chamber to generate the aerosol for smoking.