WO2023125717A1

WO2023125717A1 - Heating assembly for aerosol generating device and aerosol generating system

Info

Publication number: WO2023125717A1
Application number: PCT/CN2022/142997
Authority: WO
Inventors: Siwen Li; Xiaosong FU; Zhiqiang Tang; Zhengyong LI; Xiaobo Wang; Jinbo MIAO; Hui RONG; Xiaochi JIN
Original assignee: Shenzhen Huabao Collaborative Innovation Technology Research Institute Co., Ltd.
Priority date: 2021-12-31
Filing date: 2022-12-28
Publication date: 2023-07-06
Also published as: CN216601678U

Abstract

The present application discloses a heating assembly for an aerosol generating device, and an aerosol generating system, and relates to the technical field of aerosol generation. The heating assembly includes an insulating cover body, a ceramic element and a heating member. The insulating cover body is provided inside with an accommodating space, and is also provided with an opening; the ceramic element is located at the opening, and an air inlet is provided at the portion of the insulating cover body that is adjacent to the ceramic element, and the air inlet is in communication with the accommodating space. The ceramic element is provided with a groove, and the ceramic element is provided with a tube body, and the tube body is in communication with the accommodating space and the groove, and is located in the accommodating space. The heating member is provided in the tube body. In the present application, after the heating member is heated, the residual heat is retained in the gas circulation passage, and the high temperature gas in the gas circulation passage enters the tube body from the bottom of the tube body and then flows away under the action of suctioning. The temperature compensation for the aerosol generating substrate is realized, and the heat efficiency of the heating member is improved.

Description

Heating Assembly for Aerosol Generating Device and Aerosol Generating System

Cross-reference to related applications

The present application claims priority to Chinese patent application No. 2021234521572, entitled “Heating Assembly for aerosol generating Device and Aerosol Generating System” , filed with China National Intellectual Property Administration (CNIPA) on December 31, 2021, the entire contents ofwhich are incorporated by reference in the present application.

Technical Field

The present application relates to the technical field of generating aerosols, and in particular to a heating assembly for an aerosol generating device and an aerosol generating system.

Background Art

Currently, as electronic products become popular in cigarette technology, more and more smokers are using electronic smoking devices. Among them, there is an electronic smoking device in which the cigarettes are not burned, wherein the main principle of the electronic smoking device is to bake the low-temperature non-burning cigarettes through a heating body, and to produce smoke by baking, which smoke is then inhaled by a smoker. Regarding the heating and non-burning electronic smoking devices in the related technology, when the heating body inside the electronic smoking device generates heat, the part of the electronic smoking device that surrounds the heating body is heated three-dimensionally, and the heating body is merely arranged inside of the electronic smoking device and heat is transferred to a single side of the electronic smoking device, thereby wasting heat energy.

Summary

In view of the above, an object of the present application is to overcome deficiencies in the related technology, and the present application provides a heating assembly for an aerosol generating device to solve the technical problem concerning energy waste of an electronic smoking device in the related technology.

The present application provides:

a heating assembly for an aerosol generating device, which may comprise:

an insulating cover body with an accommodating space provided therein, and the insulating cover body is provided with an opening in communication with the accommodating space;

a ceramic element which may be provided at the opening, wherein an air inlet may be provided at the portion of the insulating cover body that is adjacent to the ceramic element, the air inlet may be in communication with the accommodating space; a groove may be provided on the top of the ceramic element and a tube body may be provided on the side of the ceramic element facing away from the groove, and the tube body may be in communication with the accommodating space and the groove, respectively, and may be located within the accommodating space; and

a heating member which may be provided on the tube body, wherein a connecting electrode of the heating member may extend through the insulating cover body.

In some embodiments of the present application, the air inlet may be in communication with the opening, the ceramic element may be provided with a position-limiting protrusion at an edge thereof, and the position-limiting protrusion is configured to be inserted into the air inlet without completely block the air inlet.

In some embodiments of the present application, the insulating cover body may be formed with an extension extending outwardly along an edge of the opening, and a bottom of the ceramic element is arranged to be abutted against the extension.

In some embodiments of the present application, the tube body may be provided with a first opening and a second opening at the opposite ends of the tube body respectively, wherein the first opening may be located at the bottom of the groove, and the second opening may be arranged adjacent to the bottom of the insulating cover body.

In some embodiments of the present application, the first opening may be located at a central position of the bottom of the groove.

In some embodiments of the present application, a gas circulation passage may be formed between the tube body and the insulating cover body.

In some embodiments of the present application, the tube body may be configured as a cylindrical hollow structure (e.g., a tubular structure) , wherein the sum of areas of the air inlet is S, a height of the tube body from a bottom surface of an inner wall of the insulating cover body is H, and a circumference of an internal through hole of the tube body is L, where a relation: S＞H*L may be satisfied.

In some embodiments of the present application, a longitudinal central axis of the insulating cover body may coincide with a longitudinal central axis of the cylindrical hollow structure.

In some embodiments of the present application, the heating member may be a heating wire, and the heating wire may be arranged spirally on the tube body in a circumferential direction of the tube body.

In some embodiments of the present application, the tube body may be made of ceramic materials, the heating member may be a printed circuit provided on the tube body, and the printed circuit may be electrically connected with the connecting electrode.

The present application further provides an aerosol generating system which may have a housing, a power supply device, and a heating assembly for the aerosol generating device as described in the above embodiments, wherein the heating assembly may be located in the housing of the aerosol generating system, the top of the housing of the aerosol generating system may be formed with a cavity for accommodating aerosol generating substrate materials, and the heating member of the heating assembly may be electrically connected with the power supply device through the connecting electrode.

In some embodiments of the present application, the aerosol generating system may include a circuit board, and the connecting electrode of the heating member may be fixed to the circuit board by a silver brazing process.

Compared with the related technology, the present application brings about at least the following beneficial effects: the present application proposes a heating assembly for an aerosol generating device, which comprises an insulating cover body, a ceramic element and a heating member, wherein the heating member is electrically connected with an external power supply of the electronic smoking device (e.g., an aerosol generating system) through the connecting electrode, so that the aerosol generating substrate located at the groove is heated in the case that the heating member generates heat. The heating member is a heating pattern made of a zirconia-containing ceramic element, and a noble metal heating paste. The heating module of the heating member has a small overall volume and is light in weight, and a high power density and a high heat efficiency can be obtained. It has excellent heating characteristics, and fast warming speed, and it can obtain arbitrary temperature distribution. Moreover, since the heating member and the tube body are arranged in the accommodating space, a gas circulation passage is formed between the outside of the tube body and the inner wall of the accommodating space, and after the heating member generates heat, the residual heat is retained in the gas circulation passage. In this way, when the smoker smokes, the airflow enters from the air inlet, and under the action of the sucking airflow, the high-temperature gas in the gas circulation passage flows into the tube body from the bottom of the tube body and flows out from the opening arranged at the groove, under such a sucking action. The temperature compensation for the aerosol generating substrate is realized, the residual heat of the heating member is utilized efficiently, and the heat efficiency of the heating member is improved. The 1000℃silver brazing process is adopted for the soldering joint of the connecting electrode, where the soldering joint is stable, and can withstand a high temperature of 350℃ for a long time.

Brief Description of the Drawings

To illustrate the technical solution of the embodiment of the present application more clearly, drawings required for use in the embodiments will be introduced briefly below. It should be understood that the following drawings show only some embodiments of the present application and therefore should not be considered as a limitation to the scope, and those ordinary skilled in the art may obtain other related drawings in the light of the drawings without any inventive efforts

FIG. 1 illustrates a perspective schematic view of a heating assembly for an aerosol generating device in some embodiments of the present application;

FIG. 2 illustrates a schematic view of a heating assembly for an aerosol generating device in some embodiments of the present application;

FIG. 3 illustrates a structural schematic cross-section view taken along line A-A in FIG. 2;

FIG. 4 illustrates a perspective schematic view of a heating assembly for an aerosol generating device in one embodiment of the present application;

FIG. 5 illustrates an exploded schematic view of a heating assembly for an aerosol generating device in one embodiment of the present application;

FIG. 6 illustrates a three-dimensional schematic view of an aerosol generating system in some embodiments of the present application; and

FIG. 7 illustrates a perspective schematic view of an aerosol generating system in some embodiments of the present application.

Illustration of Reference signs of main elements:

100-aerosol generating system; 101-heating assembly, 10-insulating cover body; 11-accommodating space; 111-gas circulation passage; 12-air inlet; 13-extension; 20-ceramic element; 21-groove; 22-tube body; 2201-first opening; 2202-second opening; 23-position-limiting protrusion; 30-heating member; 31-connecting electrode; 200-aerosol generating substrate.

Detailed Description of the Embodiments

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference signs throughout indicate the same or similar elements or elements having the same or similar functions. The embodiments described below by reference to the accompanying drawings are exemplary and are intended only to explain the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that orientation or positional relations indicated by terms such as “center” , “longitudinal” , “transversal” , “top” , “bottom” , “inside” , “outside” , “axial” , and “circumferential” are based on the orientation or positional relations as shown in the figures, only for facilitating description of the present application and simplifying the description, rather than indicating or implying that the mentioned devices or elements must be in a particular orientation or constructed or operated in the particular orientation, and therefore they should not be construed as limiting the present application.

In addition, terms “first” and “second” are used for descriptive purposes only, and are not to be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the present application, the wording “plurality” means two or more than two, unless otherwise expressly and specifically defined.

In the present application, unless otherwise expressly specified and defined, terms “mounted” , “coupled” , “connected” , “fixed” , etc. shall be understood in a broad sense, for example, those may refer to a fixed connection, or may refer to a removable connection, or may refer to being integrally connected; those may refer to a mechanical connection, or an electrical connection; those may refer to a direct connection, or an indirect connection through an intermediate medium, or those may refer to a relationship where two elements are in communication with each other therein or two elements interact with each other. The specific meaning of the above terms in the present application can be understood by those skilled in the art on a case-by-case basis.

As shown in FIGS. 1 to 5, an exemplary embodiment of the present application provides a heating assembly 101 for an aerosol generating device, primarily applied to an aerosol generating system 100 for heating non-burning tobaccos (aerosol generating substrate 200) to facilitate the smoking of a smoker.

The heating assembly 101 for the aerosol generating device comprises: an insulating cover body 10, a ceramic element 20 and a heating member 30.

The insulating cover body 10 is provided therein with an accommodating space 11, and is provided with an opening in communication with the accommodating space 11, and the opening is located on the top of the insulating cover body 10. The ceramic element 20 is provided at the opening, and an air inlet 12 is provided at a portion of the insulating cover body 10 that is adjacent to the ceramic element 20. The air inlet 12 is in communication with the accommodating space 11. A groove 21 is provided on the top of the ceramic element 20 and a tube body 22 is provided on a side of the ceramic element 20 facing away from the groove 21, and the tube body 22 is in communication with the accommodating space 11 and the groove 21, respectively, and is located in the accommodating space 11.

The heating member 30 is provided in the tube body 22, and a connecting electrode 31 of the heating member 30 is provided through the insulating cover body 10.

With respect to the heating assembly 101 for the aerosol generating device provided in the embodiment, specifically, the heating assembly 101 is located in the housing of the aerosol generating system 100, the housing of the aerosol generating system 100 is formed with a cavity for placing the aerosol generating substrate 200 at the top of the housing, the insulating cover body 10 and the ceramic element 20 are located below the cavity, the ceramic element 20 is located between the insulating cover body 10 and the cavity, and the groove 21 is in communication with the cavity. The heating member 30 is electrically connected with an external power supply (e.g., a power supply device) of the aerosol generating system 100 through the connecting electrode 31, so that the aerosol generating substrate 200 located at the groove 21 is heated when the heating member 30 generates heat. Moreover, since the heating member 30 and the tube body 22 are arranged in the accommodating space 11, a gas circulation passage 111 is formed between the outside of the tube body 22 and the inner wall of the accommodating space 11. After the heating member 30 generates heat, the residual heat is retained in the gas circulation passage. In this way, when the smoker smokes, the airflow enters from the air inlet 12, and under the action of sucking airflow, the high-temperature gas in the gas circulation passage flows into the tube body 22 from the bottom of the tube body 22 and flows out from the opening at the groove 21, under such a sucking action. The temperature compensation for the aerosol generating substrate 200 is achieved, the residual heat from the heating member 30 is utilized efficiently, and the heat efficiency of the heating member 30 is improved.

As shown in FIG. 4, in an embodiment of the present application, optionally the air inlet 12 is in communication with the opening, the ceramic element 20 is provided with a position-limiting protrusion 23 at an edge thereof, the position-limiting protrusion 23 can be inserted into the air inlet 12 in such a way that the air inlet 12 is not completely blocked by the position-limiting protrusion 23.

In the embodiment, the ceramic element 20 is provided with the position-limiting protrusion 23 at the edge thereof so that the position-limiting protrusion 23 is insertable at a position where the air inlet 12 is in communication with the opening, in the case that the ceramic element 20 and the insulating cover body 10 are assembled. On the one hand, with such a configuration, a position limiting function for the connection between the ceramic element 20 and the insulating cover body 10 can be realized, and thus the ceramic element 20 and the insulating cover body 10 are not easily deflected in the circumferential direction after being assembled. On the other hand, with such a provision, a change in the height of the position-limiting protrusion 23 in an axial direction of the insulating cover body 10 can be achieved, and thus the size of the air inlet 12 can be adjusted and the air intake volume of the air inlet 12 can be changed accordingly.

It is understood that the position-limiting protrusion 23 may be provided in the number of one, two, four or more, and the air inlet 12 is in a number equal to the number of the position-limiting protrusion 23, or is in a number at least greater than the number of the position-limiting protrusion 23. In this implementation, as an example, there are two position-limiting protrusions 23 and two air inlets 12.

As shown in FIGS. 1 and 2, in one embodiment of the present application, optionally, the insulating cover body 10 forms an extension 13 extending outwardly along the edge of the opening, and a bottom of the ceramic element 20 can be abutted against the extension 13. With such a design, wall thickness of a portion of the insulating cover body 10 that is adjacent to the opening is increased. Specifically, in the embodiment, the bottom of the ceramic element 20 may be supported at a position where the extension 13 of the insulating cover body 10 is arranged, thereby increasing a contact area between the insulating cover body 10 and the ceramic element 20 and allowing a better reliable connection between the ceramic element 20 and the insulating cover body 10.

Also, it should be noted that, except for the portion where the extension 13 is provided, the remaining portions of the insulating cover body 10 each have an outer diameter that is smaller than an outer diameter of the portion where the extension 13 is provided.

As shown in FIGS. 2 and 3, in one embodiment of the present application, optionally the tube body 22 is provided with a first opening 2201 and a second opening 2202 at the opposite ends of the tube body respectively, wherein the first opening 2201 is located at the bottom of the groove 21, and the second opening 2202 is arranged adjacent to the bottom of the insulating cover body 10. Optionally, a gas circulation passage 111 is formed between the tube body 22 and the insulating cover body 10. In this way, when the smoker smokes, the airflow flows into the gas circulation passage 111 from the air inlet 12. Under the action of sucking airflow, the high-temperature gas in the gas circulation passage 111 flows into the tube body 22 from the second opening 2202 at the bottom of the tube body 22 and flows out from the first opening 2201 located at the bottom of the groove 21, under such a sucking action, so that temperature compensation for the aerosol generating substrate 200 is achieved. Specifically, the first opening 2201 extends through the groove 21 at the bottom thereof.

It is to be noted that the heating member 30 is a heating pattern made of a zirconia-containing ceramic element and a noble metal heating paste, wherein the heating pattern may be made of materials including, but not limited to, silver, tungsten, MoMn, and other suitable printed circuit materials. The printing thickness of the heating pattern is 0.005 to 0.05mm. The connecting electrode 31 may be made of materials including but not limited to copper, silver, and nickel, having a diameter of0.1 to 0.3mm.

As shown in FIG. 3, in the above embodiment of the present application, optionally, the first opening 2201 is located at a central part of the bottom of the groove 21. When the aerosol generating system 100 is in use, the aerosol generating substrate 200 will be arranged directly above the groove 21. In this way, in the present embodiment, the first opening 2201 is provided at a central part of the bottom of the groove 21, and the high-temperature gas flowing out of the first opening 2201 can more easily flow into the aerosol generating substrate 200 under the direct sucking action of the smoker. Therefore, the airflow is more concentrated and the loss of airflow diffusion is reduced, and the temperature compensation effect for the aerosol generating substrate 200 is improved.

As shown in FIG. 3, in one embodiment of the present application, optionally the tube body 22 is configured as a cylindrical hollow structure, wherein the sum of areas of the air inlet 12 is S, a height of the tube body 22 from a bottom surface of an inner wall of the insulating cover body 10 is H, and a circumference of an internal through hole of the tube body 22 is L, where a relation: S＞H*L is satisfied. (The circumference of the internal through hole refers to a circumference of a profile, obtained in a plane perpendicular to an extending direction of the tube body, of the internal through hole of the tube body 22) .

In the embodiment, by providing the sum S of areas of the air inlet 12 to be greater than area of a product of the height H of the tube body 22 from the bottom surface of the inner wall of the insulating cover body 10 and the circumference L of the bore through hole of the tube body 22, the airflow can be ensured to enter the cylindrical hollow structure from the second opening 2202 at the bottom of the cylindrical hollow structure, and the second opening 2202 is avoided from being blocked by the bottom of the insulating cover body 10.

In addition, it should be noted that the tube body 22 can also be configured as a prismatic hollow structure, or a square tubular structure, etc. The insulating cover body 10 may also be in a square tubular or cylindrical shape, not all of the examples are listed here.

In the above embodiment of the present application, optionally, a longitudinal central axis of the insulating cover body 10 coincides with a longitudinal central axis of the cylindrical hollow structure. Distances from an outer wall of the cylindrical hollow structure to an inner wall of the insulating cover body 10 are all equal, that is, distances from the outer wall of the tube body 22 to the inner wall of the accommodating space 11 are all equal. In this way, the airflow around the tube body 22 is more balanced when the airflow flows.

As shown in FIGS. 1 and 3, in one embodiment of the present application, optionally, the heating member 30 is a heating wire, and the heating wire is arranged spirally on the tube body 22 in a circumferential direction of the tube body 22. The heating element 30 can be made of a heating wire, and the connecting electrode 31 of the heating wire is electrically connected with the power supply of the aerosol generating system 100, thereby enabling the heating wire to heat.

Regarding the embodiment where the heating member 30 is selected to be made of a heating wire, another embodiment of the present application can be adopted in which the tube body 22 is made of ceramic materials, the heating member 30 is a printed circuit provided on the tube body 22, and the printed circuit is electrically connected with the connecting electrode 31.

In the embodiment, the heating member 30 can also be formed by printed circuits on the tube body 22 made of ceramic materials, and the printed circuit may be printed on the outer wall of the tube body 22 or may be printed on the inner wall of the tube body 22. Also, heating of the ceramic tube body 22 by the printed circuit is achieved with the energization of the connecting electrode 31.

As shown in FIGS. 1, 6, and 7, the present application further provides an exemplary embodiment of an aerosol generating system 100, wherein the aerosol generating system 100 in such exemplary embodiment has a housing, a power supply device, and a heating assembly 101 for the aerosol generating device as described in the above embodiment. The heating assembly 101 may be located in the housing of the aerosol generating system 100, the top of the housing of the aerosol generating system 100 may be formed with a cavity for accommodating the aerosol generating substrate 200, and the heating member 30 of the heating assembly 101 may be electrically connected with the power supply device through the connecting electrode 31.

The aerosol generating system 100 of the embodiment includes the heating assembly 101 for the aerosol generating device of the above embodiment, and therefore has all the beneficial effects of the heating assembly 101 for the aerosol generating device of the above embodiment, which will be omitted here.

The aerosol generating system 100 may also include a circuit board, which may be configured to be coupled with a battery (e.g., a power supply device) . Of course, the circuit board may also be coupled to a charging port, etc. Specifically, the circuit board may also be coupled to the heating member 30. The circuit board may be provided with a control circuitry for the electronic cigarette to control the operation of the aerosol generating system 100. For example, the circuit board may control the heating power, the heating process, the recording and feedback of relevant data, etc., of the heating member 30. Of course, the circuit board may also be provided with a charge protection circuit, a discharge protection circuit, and so on, so as to achieve charge and discharge protection. The circuit board may be a Printed Circuit Board (PCB) , or may be a flexible circuit board, for example, a Flexible Printed Circuit (FPC) . Of course, it may also be other types of circuit boards.

The heating member 30 may be connected with the circuitry of the battery by using the circuit board, and in turn can generate heat by using the electrical energy of the battery, thereby generating thermal energy to heat the ceramic element 20 and the tube body 22.

It should be noted that the connecting electrode 31 of the heating member 30 may be fixed in the circuit board by soldering, and the 1000℃silver brazing process is adopted for the soldering joint of the connecting electrode 31, where the soldering joint is stable, and can withstand a high temperature of 350℃ for a long time. For example, the connecting electrode 31 may be provided thereon with a soldering pad, and the soldering pad may be directly fixedly soldered to the circuit board, allowing an electrical connection between the circuit board and the heating member 30. The connecting electrode 31 of the heating element 30 may also be indirectly fixed to the circuit board through a fixing member, and then may be electrically connected with the circuit board through conducting wires and so on. Of course, the connecting electrode 31 of the heating member 30 may also be directly connected to the circuit board through conductive members such as conducting wires. The heating member 30 and the circuit board can be connected in multiple connection modes which are not specifically defined in the embodiment. The heating member 30 may generate heat under the control of the circuit board.

In summary, the present application proposes a heating assembly 101 for an aerosol generating device, and an aerosol generating system 100, wherein the heating assembly 101 includes an insulating cover body 10, a ceramic element 20 and a heating member 30. The heating member 30 is electrically connected with an external power supply (e.g., a power supply device) of the aerosol generating system 100 through the connecting electrode 31, and thus the aerosol generating substrate 200 located at the groove 21 is heated when the heating member 30 generates heat. Moreover, since the heating member 30 and the tube body 22 are in the accommodating space 11, the gas circulation passage 111 is formed between the outside of the tube body 22 and the inner wall of the accommodating space 11, and after the heating member 30 generates heat, the residual heat is retained in the gas circulation passage 111. In this way, when the smoker smokes, the airflow enters from the air inlet 12, and under the action of sucking airflow, the high-temperature gas in the gas circulation passage 111 flows into the tube body 22 from the bottom of the tube body 22 and flows out from the opening at the groove 21, under such a sucking action. The temperature compensation for the aerosol generating substrate 200 is realized, the residual heat of the heating member 30 is utilized efficiently, and the heat efficiency of the heating member 30 is improved. In the related technology, the heating body arranged inside the electronic smoking device generates heat from a peripheral part of the heating body to achieve a three-dimensional heating, and the heating body is merely arranged inside of the electronic smoking device, so that heat is transferred to a single side of the electronic smoking device, thereby wasting heat energy. Compared with the related technology, the heating assembly 101 of the present application utilizes the residual heat more effectively, avoids the problem of energy waste, and improves the heat efficiency. The heating temperature for the aerosol generating substrate 200 is more balanced, and the taste of the aerosol smoked by the smoker is ensured.

Although embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limiting the present application, and variations, modifications, replacements and variants of the above embodiments may be made by those ordinarily skilled in the art within the scope of the present application.

Industrial Applicability

The present application provides a heating assembly for an aerosol generating device, and an aerosol generating system, and relates to the technical field of generating aerosols. The heating assembly includes an insulating cover body, a ceramic element and a heating member. The insulating cover body is provided therein with an accommodating space, and is also provided with an opening; the ceramic element is located at the opening, and an air inlet is provided at a portion of the insulating cover body that is adjacent to the ceramic element, and the air inlet is in communication with the accommodating space. The ceramic element is provided with a groove, and the ceramic element is provided with a tube body, and the tube body is in communication with the accommodating space and the groove, respectively, and is located in the accommodating space. The heating member is provided in the tube body. In the present application, after the heating member generates heat, the residual heat is retained in the gas circulation passage, and under the suction action, the high-temperature gas in the gas circulation passage flows into the tube body from the bottom of the tube body and flows out. The temperature compensation for the aerosol generating substrate is realized and the heat efficiency of the heating member is improved.

In addition, it is to be understood that the heating assembly, the aerosol generating system, etc. of the present application are reproducible and are applicable in a variety of industrial applications. For example, the heating assembly of the present application is appliable in the technical field of aerosol generation.

Claims

A heating assembly for an aerosol generating device, characterized in that the heating assembly (101) comprises:

an insulating cover body (10) with an accommodating space (11) provided therein, the insulating cover body is provided with an opening in communication with the accommodating space (11) ;

a ceramic element (20) provided at the opening, wherein an air inlet (12) is provided at a portion of the insulating cover body (10) that is adjacent to the ceramic element (20) , the air inlet (12) is in communication with the accommodating space (11) ; a groove (21) is provided on the top of the ceramic element (20) and a tube body (22) is provided on the side of the ceramic element (20) facing away from the groove (21) , the tube body (22) is in communication with the accommodating space (11) and the groove (21) , respectively, and is located within the accommodating space (11) ; and

a heating member (30) provided on the tube body (22) , and a connecting electrode (31) of the heating member (30) extends through the insulating cover body (10) .
The heating assembly for an aerosol generating device according to claim 1, wherein the air inlet (12) is in communication with the opening, the ceramic element (20) is provided with a position-limiting protrusion (23) at an edge thereof, and the position-limiting protrusion (23) is configured to be inserted into the air inlet (12) without completely blocking the air inlet (12) .
The heating assembly for an aerosol generating device according to claim 1 or 2, wherein the insulating cover body (10) is formed with an extension (13) extending outwardly along the edge of the opening, and a bottom of the ceramic element (20) is arranged to be abutted against the extension (13) .
The heating assembly for an aerosol generating device according to any one of claims 1 to 3, wherein the tube body (22) is provided with a first opening (2201) and a second opening (2202) at the opposite ends of the tube body respectively, the first opening (2201) is located at a bottom of the groove (21) , and the second opening (2202) is arranged adjacent to the bottom of the insulating cover body (10) .
The heating assembly for an aerosol generating device according to claim 4, wherein the first opening (2201) is located at a central position of the bottom of the groove (21) .
The heating assembly for an aerosol generating device according to claim 4 or 5, wherein a gas circulation passage (111) is formed between the tube body (22) and the insulating cover body (10) .
The heating assembly for an aerosol generating device according to any one of claims 4 to 6, wherein the tube body (22) is configured as a cylindrical hollow structure, and wherein the sum of areas of the air inlet (12) is S, a height of the tube body (22) from a bottom surface of an inner wall of the insulating cover body (10) is H, and a circumference of an internal through hole of the tube body (22) is L, where a relation: S ＞H*L is satisfied.
The heating assembly for an aerosol generating device according to claim 7, wherein a longitudinal central axis of the insulating cover body (10) coincides with a longitudinal central axis of the cylindrical hollow structure.
The heating assembly for an aerosol generating device according to any one of claims 1 to 8, wherein the heating member (30) is a heating wire, and the heating wire is arranged spirally on the tube body (22) in a circumferential direction of the tube body.
The heating assembly for an aerosol generating device according to any one of claims 1 to 8, wherein the tube body (22) is made of ceramic materials, the heating member (30) is a printed circuit provided on the tube body (22) , and the printed circuit is electrically connected with the connecting electrode (31) .
An aerosol generating system, characterized in that the aerosol generating system (100) comprises a housing, a power supply device, and a heating assembly (101) for an aerosol generating device according to any one of claims 1 to 10, wherein the heating assembly (101) is located in the housing of the aerosol generating system (100) , the top of the housing of the aerosol generating system (100) is formed with a cavity for accommodating an aerosol generating substrate (200) , and the heating member (30) of the heating assembly (101) is electrically connected with the power supply device through the connecting electrode (31) .
The aerosol generating system according to claim 11, wherein the aerosol generating system (100) comprises a circuit board, and the connecting electrode (31) of the heating member (30) is fixed to the circuit board by a silver brazing process.