CN222340556U - A heating device and an aerosol generating device - Google Patents

Abstract

The heating device comprises a heating element, a containing element and a heat insulating element, wherein the heating element is provided with an air inlet end and an air outlet end which are opposite, an air flow channel for guiding air flow to pass through the heating element is formed in the heating element, the containing element is arranged at the air outlet end of the heating element in a contact mode, a containing channel communicated with the air flow channel and used for containing aerosol generating matrixes is formed in the containing element, the heat insulating element is arranged at the air inlet end of the heating element in a contact mode, a drainage channel communicated with the air flow channel is formed in the heat insulating element, and the heat insulating element is used for preventing heat generated by the heating element from being conducted to one side of the heat insulating element. The heat insulation piece arranged at the air inlet end of the heating piece is utilized to separate heat generated by the heating piece, and a single-end heat conduction structural form can be formed, so that the heat can be intensively acted on air flow flowing through the heating piece and the accommodating piece, the utilization rate of the heat can be effectively improved, the power consumption of the heating device in application is reduced, and the heating efficiency and the effect of hot air flow are enhanced.

Description

Heating device and aerosol generating device

Technical Field

The utility model relates to the technical field of aerosol, in particular to a heating device and aerosol generating equipment.

Background

An aerosol-generating device is an electronic device for generating an aerosol by heating an aerosol-generating substrate, the heating means being a core component of the aerosol-generating device for generating an aerosol for use without combustion of the aerosol-generating substrate by heating the aerosol-generating substrate to a temperature at which the aerosol is generated but insufficient for combustion to occur.

Some heating devices now predominate in hot gas flow heating, i.e. by heating air flowing through a heating element to form a hot gas flow, a uniform heating of the aerosol-generating substrate is achieved during the flow of the hot gas flow through the aerosol-generating substrate. The heating device heats the aerosol-generating substrate by hot air flow, so that the heating temperature of a heating body of the heating device is high, the heat conduction from the heating body to two ends in the airflow flowing direction is quick, and the heat generated by the heating body cannot be concentrated and quickly acted on the flowing airflow or the aerosol-generating substrate, so that the power consumption of the heating device is high, and the heat utilization rate is low.

Disclosure of utility model

The utility model aims to provide a heating device and aerosol generating equipment using the same, so as to achieve the purposes of improving the heat utilization rate and reducing the power consumption.

According to a first aspect, an embodiment provides a heating device comprising:

The heating element is used for generating heat, and is provided with an air inlet end and an air outlet end which are opposite along the length direction of the heating element, wherein an air flow channel is formed in the heating element;

A receiving member disposed in contact with the air outlet end of the heating member, the receiving member having a receiving passage formed therein for receiving the aerosol-generating substrate and communicating with the air flow passage, and

The heat insulation piece is arranged at the air inlet end of the heating piece in a contact manner, a drainage channel communicated with the airflow channel is formed in the heat insulation piece, and the heat insulation piece is used for preventing heat generated by the heating piece from being conducted towards one side of the heat insulation piece;

The material heat conductivity coefficient of the heating element is larger than that of the accommodating element, and the material heat conductivity coefficient of the accommodating element is larger than that of the heat insulating element.

In one embodiment, the heating element comprises a heat exchange core and a heating element arranged on the heat exchange core, the heat exchange core is arranged between the accommodating element and the heat insulation element in a contact manner, the air flow channel penetrates through the heat exchange core, and the heating element, the heat insulation element and the accommodating element are not contacted with each other, so that heat generated by the heating element can be conducted to the heat exchange core.

In one embodiment, a heating cavity is formed in the heat exchange core, the heating cavity is isolated from the airflow channel and the accommodating channel, and the heating body is accommodated and arranged in the heating cavity.

In one embodiment, the number of the air flow channels is multiple, and the multiple air flow channels are uniformly distributed at intervals around the geometric center line of the heating cavity.

In one embodiment, the heating element is made of an electrothermal material, and the heating element can generate heat due to electrifying, or is made of an electromagnetic material, and the heating element can generate heat due to the action of an alternating magnetic field.

In one embodiment, the thermal conductivity of the material of the heat generating element is greater than 50W/(m·k), the thermal conductivity of the material of the receiving element is 3.0W/(m·k) -50W/(m·k), and the thermal conductivity of the material of the heat insulating element is 0.2W/(m·k) -4.0W/(m·k).

In one embodiment, the accommodating part is provided with a heat conducting surrounding wall, the heat conducting surrounding wall surrounds the length direction to form the accommodating channel, and the air outlet end of the heating part is inserted into the accommodating channel in a manner of contacting the heat conducting surrounding wall;

And/or the heat-insulating piece is provided with a heat-insulating enclosing wall, the heat-insulating enclosing wall surrounds the length direction to form the drainage channel, and the air inlet end of the heating piece is inserted into the drainage channel in a manner of contacting the heat-insulating enclosing wall.

In one embodiment, the housing has a thermally conductive enclosure wall and the thermal shield has a thermally insulating enclosure wall, wherein:

The first limiting structure is used for propping against the air outlet end of the heating element so as to limit the relative position of the heating element and the accommodating element in the length direction;

The heat-insulating piece is also provided with a second limiting structure protruding out of the inner surface of the heat-insulating surrounding wall, and the second limiting structure is used for propping against the air inlet end of the heat-generating piece so as to limit the relative position of the heat-generating piece and the heat-insulating piece in the length direction.

According to a second aspect, an embodiment provides an aerosol-generating device, including a host device and the heating device of the first aspect, wherein an air inlet channel and an air outlet channel are formed in the host device, the heating device is disposed between the air inlet channel and the air outlet channel, the accommodating channel is communicated with the air outlet channel, and the drainage channel is communicated with the air inlet channel.

In one embodiment, the host device includes:

A first support member having a first end and a second end opposite to each other in the longitudinal direction, wherein an accommodating space is formed inside the first support member, the air outlet passage is provided through the first end of the first support member in the longitudinal direction, and

The second support piece is connected with the second end of the first support piece through the plug bush, and the air inlet channel is arranged along the length direction and penetrates through the second support piece;

The heating device is arranged in the accommodating space, wherein the accommodating piece is connected with the first supporting piece so as to be in sealing communication with the accommodating channel and the air outlet channel, and the heat insulating piece is connected with the second supporting piece so as to be in sealing communication with the drainage channel and the air inlet channel.

The heating device comprises a heating element, a containing element and a heat insulating element, wherein the heating element is provided with an air inlet end and an air outlet end which are opposite, an air flow channel for guiding air flow to pass through the heating element is formed in the heating element, the containing element is in contact with the air outlet end of the heating element, a containing channel communicated with the air flow channel and used for containing aerosol generating matrixes is formed in the containing element, the heat insulating element is in contact with the air inlet end of the heating element, a drainage channel communicated with the air flow channel is formed in the heat insulating element, the heat insulating element is used for preventing heat generated by the heating element from being conducted towards one side of the heat insulating element, and the material heat conductivity coefficient of the heating element is larger than that of the containing element. The heat insulation piece can be used for blocking heat generated by the heating piece from the air inlet end of the heating piece, and a single-end heat conduction structural form is formed, so that the heat generated by the heating piece can be intensively acted on air flow flowing through the heating piece and the accommodating piece, the heat utilization rate can be effectively improved, the power consumption of the heating device in application is reduced, and the heating efficiency and the effect of hot air flow are improved.

Drawings

Fig. 1 is a schematic cross-sectional structure of a heating device according to an embodiment.

Fig. 2 is an exploded view (a) of a heating device according to an embodiment.

Fig. 3 is a schematic exploded view (ii) of a heating device according to an embodiment.

Fig. 4 is a schematic cross-sectional structure of an aerosol-generating device of an embodiment.

Fig. 5 is a schematic view of the structural arrangement of a heating device of an embodiment in an aerosol-generating device.

In the figure:

10. A heat generating member; 10a, an air flow channel, 11, a heat exchange core, 11a, a heating cavity, 12, a heating body, 20, a containing piece, 20a, a containing channel, 20b, a first limiting structure, 30, a heat insulation piece, 30a, a drainage channel, 30b, a second limiting structure, 40a, a first supporting piece, 40a, an air outlet channel, 50, a second supporting piece and 50a, and an air inlet channel.

Detailed Description

The application will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, related operations of the present application have not been shown or described in the specification in order to avoid obscuring the core portions of the present application, and may be unnecessary to persons skilled in the art from a detailed description of the related operations, which may be presented in the description and general knowledge of one skilled in the art.

Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated.

Referring to fig. 1 to 3, an embodiment of the present application provides a heating device, which is capable of being installed in an aerosol generating apparatus, and is configured to heat an aerosol generating substrate and generate an aerosol by heating an airflow flowing through the heating device, wherein the heating device includes a heating element 10, a receiving element 20, a heat insulating element 30 and other functional components according to needs, wherein a thermal conductivity (i.e. a thermal conductivity or a thermal conductivity) of a material of the heating element 10 is greater than a thermal conductivity of a material of the receiving element 20, and a thermal conductivity of a material of the receiving element 20 is greater than a thermal conductivity of a material of the heat insulating element 30, which will be described in detail below.

Referring to fig. 1, a heat generating element 10 is mainly used for generating heat to heat an air flow flowing through the heat generating element 10 to a preset temperature to form a hot air flow, and an air flow channel 10a for guiding the air flow from the inside of the heat generating element 10 to pass through the heat generating element 10 is formed in the heat generating element 10.

For convenience of distinction and description, both ends of the heat generating member 10 in the air flow direction are defined as an air inlet end and an air outlet end of the heat generating member 10, respectively, that is, the air flow passage 10a is provided from the air inlet end of the heat generating member 10 to the air outlet end of the heat generating member 10a to guide the air flow into the heat generating member 10 from the air inlet end of the heat generating member 10 and to discharge the heat generating member 10 from the air outlet end of the heat generating member 10.

For example, referring to fig. 1 to 3, the overall outline of the heat generating element 10 is a columnar structure with a predetermined length, the heat generating element 10 may be made of a high heat conductive material with a heat conductivity coefficient greater than 50W/(m·k) (i.e., 50W/m·degree), and the air flow channel 10a is disposed through the heat generating element 10 along the length direction or the axial direction of the heat generating element 10.

Referring to fig. 1, the accommodating member 20 may be made of a heat conductive material having a thermal conductivity coefficient between 3.0W/(m·k) -50W/(m·k), and the accommodating member 20 is disposed in contact with the air outlet end of the heat generating member 10, and is mainly used for accommodating an aerosol-generating substrate having a fixed or stable contour shape, such as a cylindrical aerosol-generating article. Specifically, the housing 20 has a housing channel 20a formed therein, and the housing channel 20a is disposed in communication (e.g., sealed communication) with the airflow channel 10a, and the aerosol-generating substrate may be housed or otherwise disposed within the housing channel 20 a.

As an example, referring to fig. 1 to 3, the accommodating member 20 has a heat conducting wall, which is disposed around the length direction of the heat generating member 10, so as to form an accommodating member 20 with an overall outline of a substantially tubular structure, and at least a portion of the tubular space of the accommodating member 20 is an accommodating channel 20a, and the air outlet end of the heat generating member 10 is adapted to be inserted into the accommodating member 20 or the accommodating channel 20a in a manner that its outer peripheral surface is in contact with the heat conducting wall (or the channel wall of the accommodating channel 20 a), so as to realize structural connection between the accommodating member 20 and the heat generating member 10 and communication between the air flow channel 10a and the accommodating channel 20 a.

When the heat generating element 10 generates heat, the heat generated by the heat generating element 10 can be conducted to the air flowing through the airflow channel 10a to be heated to form a hot airflow, and the hot airflow can be guided into the aerosol generating substrate accommodated in the accommodating channel 20a by virtue of the communication relationship between the accommodating channel 20a and the airflow channel 10a, so that the aerosol generating substrate is uniformly and fully heated by virtue of the hot airflow to generate usable aerosol.

With the increase of the heating temperature of the heating element 10, part of the heat can be conducted to the accommodating element 20 based on the contact connection relationship between the accommodating element 20 and the heating element 10 (such as the contact relationship between the heat conducting surrounding wall and the outer peripheral surface of the air outlet end of the heating element 10, and the accommodating element 20 is utilized to heat the aerosol generating substrate from the peripheral side so as to form the effect of circumferential auxiliary heating.

Referring to fig. 1, the heat insulating member 30 may be made of a heat insulating material having a thermal conductivity between 0.2W/(m·k) -4.0W/(m·k), the heat insulating member 30 is disposed at the air inlet end of the heat generating member 10 in contact with the heat generating member, and mainly serves to prevent heat of the heat generating member 10 from being conducted to one side of the heat insulating member 30, and specifically, a drainage channel 30a communicating with the air flow channel 10a is formed inside the heat insulating member 30, and air or air flow outside the heating device can be introduced into the heating device through the drainage channel 30a, and then flows into the receiving channel 20a or the aerosol generating substrate through the air flow channel 10 a.

For example, referring to fig. 1 to 3, the heat insulating member 30 has a heat insulating surrounding wall circumferentially disposed around the longitudinal direction of the heat generating member 10 to construct the heat insulating member 30 having an overall profile of a substantially tubular structure, at least a portion of the tubular space of the heat insulating member 30 being a drainage channel 30a, and the air inlet end of the heat generating member 10 is inserted into the heat insulating member 30 or the drainage channel 30a in such a manner that its outer peripheral surface is in contact with the heat insulating surrounding wall (or the channel wall of the drainage channel 30 a).

In other embodiments, the heat generating element 10, the accommodating element 20 and the heat insulating element 30 may take other suitable structural forms and connection modes, for example, a part of the accommodating element 20 or the heat insulating element 30 is inserted into the air outlet end or the air inlet end of the heat generating element 10, for example, the heat insulating element 30 may take a ring-shaped structure, and the heat insulating element 30 is wrapped on the outer peripheral surface and the axial end surface of the air inlet end of the heat generating element 10. In this case, the details are not described here.

By utilizing the difference of the heat conductivity coefficients of the materials among the heating element 10, the accommodating element 20 and the heat insulating element 30, a heat isolation effect can be formed at the air inlet end of the heating element 20 by means of the heat insulating element 30, and the heat of the heating element 10 is effectively prevented from being conducted towards one side of the heat insulating element 30, so that the whole heating device is constructed into a single-end heat conduction or heat-emitting structure.

On the one hand, heat can be conducted towards one side far away from the heat insulating piece 30 in a concentrated manner, so that air flow flowing through the heating piece 10 and the accommodating piece 20 are acted on in a concentrated manner, rapid heating of the air flow is realized, and further the heat utilization rate is improved, the power consumption of the device is reduced, and the heating efficiency and the heating effect of hot air flow are enhanced.

On the other hand, by establishing a structural connection between the heat insulating member 30 and the housing member 20 and the relevant components in the aerosol-generating device, heat loss of the heat generating member 10 due to direct contact with the relevant components can be avoided, e.g. heat conduction between the heat generating member 10 and the relevant components in the aerosol-generating device can be reduced or blocked by the heat insulating member 30.

Referring to fig. 1 to 3, the heat generating element 10 includes a heat exchange core 11 and a heat generating body 12, wherein the heat exchange core 11 is a generally cylindrical structure, and the air flow channel 10a is disposed through the heat exchange core 11, which can be understood that two opposite ends of the heat exchange core 11 in the length direction or the axial direction thereof are an air inlet end and an air outlet end of the heat generating element 10, that is, the heat exchange core 11 is disposed between the accommodating element 20 and the heat insulating element 30 in a contact manner. A heating chamber 11a which is isolated from or independent of the airflow channel 10a and the accommodating channel 20a is arranged in the heat exchange core 11, the heating body 12 is arranged in the heating chamber 11a, and the heating body 12, the heat insulating piece 30 and the accommodating piece 20 are not contacted with each other.

As for the heating element 12, the heating element 12 may be a heating element made of an electromagnetic material, or may be a heating element made of an electrothermal material, and specifically, the heating element is selectively set in accordance with the application environment of the heating device or the functional configuration of the aerosol-generating device.

For example, the heating element 12 may be made of a ferromagnetic material or an alloy material containing elements such as iron, nickel, cobalt, titanium, or an inorganic nonmetallic material with ferromagnetic properties such as magnetized ceramics, carbon fibers, or the like, for example, the heating element 12 may be a particulate material of an electromagnetic material and filled in the heating chamber 11a, or the heating element 12 may be a columnar structure or a sheet structure of an electromagnetic material and provided in the heating chamber 11a.

Suitably, an electromagnetic coil is provided in the heating means or in the aerosol-generating device in cooperation with the heat-generating body 12, e.g. the electromagnetic coil may be arranged around the heat-generating member 10 at the periphery of the heat-generating member 10, and the electromagnetic coil is used to provide a varying electromagnetic field environment for the heat-generating body 12, thereby enabling the heat-generating body 12 to be subjected to an alternating magnetic field for generating heat.

For example, the heating element 12 may be made of an electrothermal material such as nichrome or ferrochrome, for example, the heating element 12 may be in a mesh-like or spiral structure of the electrothermal material, the main body portion of the heating element 12 is disposed in the heating cavity 11a, and the terminal portion of the heating element 12 may lead out the heat exchange core 11 from the heating cavity 11a (for example, the heating cavity 11a is a groove cavity structure with a notch on the air inlet end face of the heat exchange core 11). Suitably, a control circuit electrically connected to the heating element 12 may be provided in the aerosol-generating device, and the heating element 12 may be energized to generate heat by supplying power to the heating element 12 via the control circuit.

Therefore, the heat generated by the heat generating element 12 can be intensively conducted to the heat exchanging core 12 by the structural relationship that the heat generating element 12, the accommodating member 20 and the heat insulating member 30 are not contacted with each other by arranging the heat generating element 12 inside the heat exchanging core 11, thereby completing heat exchange with the air flow and the accommodating member 20 by the heat exchanging core 12, forming a heating structure mainly comprising hot air flow heating and being assisted by circumferential heating of the accommodating member 20, and simultaneously, heat conduction to the heat insulating member 30 can be reduced as much as possible, and the heat insulating effect of the heat insulating member 30 can be enhanced.

In other embodiments, the heating element 12 may also be disposed outside the heat exchange core 11, for example, wound or circumferentially disposed on the outer peripheral surface of the heat exchange core 11, so as to meet different application requirements of the heating device.

In one embodiment, referring to fig. 1 to 3, the number of the air flow channels 10a is plural, the plural air flow channels 10a are uniformly and alternately arranged around the geometric center line of the heat generating cavity 11a, and it is also understood that the heat generating cavity 11a (or the heat generating body 12) is disposed in the geometric center area of the heat exchanging core 11, and the air flow channels 10a are uniformly and alternately arranged around the heat generating cavity 11a in the circumferential direction and the radial direction of the heat exchanging core 11.

Therefore, by uniformly and alternately arranging the air flow channels 10a around the heating cavity 11a, the air flow can be guided to flow through the heating element 10 more uniformly, so that the air flow is heated uniformly by the heating element 12, and a hot air flow with more uniform temperature is formed, and structural support is provided for uniformly and fully heating the aerosol-generating substrate. Meanwhile, the heating cavity 11a is isolated from the air flow channel 10a and the accommodating channel 20a, so that the influence of the air flow mixed with aerosol on the heating performance of the heating body 12 due to the backflow of the heating cavity 11a can be avoided.

In other embodiments, the heat generating cavity 11a may be an annular groove or an annular cavity structure disposed around the geometric center line of the heat exchange core 11, and the air flow passages 10a are uniformly and alternately disposed on the radially inner side, the radially outer side or both sides of the heat generating cavity 11a, so that a hot air flow with relatively uniform temperature may be formed.

In one embodiment, the heat-exchanging core 11 has a material heat conductivity (i.e., thermal conductivity or thermal conductivity) greater than that of the receiving member 20, and the receiving member 20 has a material heat conductivity greater than that of the heat-insulating member 30. For example, the heat-exchanging core 11 may be made of a high heat-conducting material having a thermal conductivity greater than 50W/(mK), the receiving member 20 may be made of a heat-conducting material having a thermal conductivity between 3.0W/(mK) and 50W/(mK), and the heat-insulating member 30 may be made of a high-temperature-resistant heat-insulating material having a thermal conductivity between 0.2W/(mK) and 4.0W/(mK).

Therefore, by selectively configuring the material properties of the heat exchange core 11, the accommodating member 20 and the heat insulating member 30, the efficiency of heat exchange or heat conduction between the heat exchange core 11 and the heating element 12 can be effectively enhanced, and the heat generated by the heating element 12 is ensured to be conducted to the heat exchange core 11 as intensively as possible, and further, a heating structure mainly comprising a hot air flow is finally formed by means of the heat exchange or heat conduction between the heat exchange core 11 and the air flow and the accommodating member 20. At the same time, the heat conduction efficiency between the heat exchange core 11 and the heat insulating member 30 is reduced or lowered, and the heat insulating effect of the heat insulating member 30 is enhanced.

In one embodiment, referring to fig. 2 and 3, the accommodating member 20 is further provided with a first limiting structure 20b inside, and the first limiting structure 20b may be an annular protrusion structure protruding from an inner surface of the heat conducting enclosure wall, or may be a plurality of protrusions arranged at intervals around a geometric center line of the accommodating member 20, or may be other suitable structures, and the accommodating channel 20a may be divided into an accommodating section and a connecting section distributed along a length direction of the heat generating member 10 by means of the first limiting structure 20b, where the aerosol generating substrate is accommodated in the accommodating section, and the air outlet end of the heat generating member 10 or the heat exchanging core 11 is inserted in the connecting section.

Therefore, the first limiting structure 20b abuts against the axial end surface of the air inlet end, so that the relative position of the heating element 10 and the accommodating element 20 (i.e. the depth of the heating element 10 inserted into the accommodating channel 20 a) and the relative position of the aerosol substrate and the accommodating element 20 can be effectively limited, which is beneficial to improving the stability of the structural connection between the heating element 10 and the accommodating element 20.

In some embodiments, referring to fig. 2 and 3, the heat insulating member 30 can refer to the accommodating member 20, and a second limiting structure 30b is disposed inside the heat insulating member 30, and the second limiting structure 30b abuts against the air inlet end surface of the heat generating member 10 or the heat exchanging core 11, so that the relative position between the heat insulating member 30 and the heat generating member 10 can be limited, and the stability of the structural connection between the two can be improved.

Referring to fig. 4 and 5, an embodiment of the present application further provides an aerosol-generating device including a host device and the heating device of the foregoing embodiment.

The host device comprises a shell component and a power supply component, wherein the shell component can be formed by combining and constructing a machine body shell, an inner pipe fitting and the like, a user can hold, move and operate the aerosol generating device by means of the shell component, the power supply component is arranged on the shell component and can be understood as a collection of related components such as a power supply source, a control circuit board, an airflow sensor, a key switch and the like, and the heating device (particularly the heating element 10) can be controlled to start heating, stop heating, adjust a heating mode and the like by means of the structural and functional matching relationship (such as the electrical connection relationship with the heating element 12) of the power supply component.

An air inlet channel 50a and an air outlet channel 40a are formed in the host device, and the heating device is communicated between the air inlet channel 50a and the air outlet channel 40a, specifically, the drainage channel 30a is communicated with the air inlet channel 50a in a sealing way, and the accommodating channel 20a is communicated with the air outlet channel 40a in a sealing way. By virtue of the communication between the receiving channel 20a and the outlet channel 40a, the aerosol-generating substrate may be inserted into the receiving channel 20a via the outlet channel 40 a.

When the aerosol-generating device is activated, a negative pressure may be applied to the outlet end of the outlet channel 40a (e.g. to draw the aerosol matrix), so that air outside the device enters the airflow channel 10a via the inlet channel 50a and the drainage channel 30a, and is heated to form a hot airflow into the receiving channel 20a or the aerosol-generating matrix, so as to heat the aerosol-generating matrix and generate aerosol, and the generated aerosol may be discharged from the outlet end of the outlet channel 40a along with the airflow, so as to be used.

In one embodiment, referring to fig. 4 and 5, the housing assembly includes a first support member 40 and a second support member 50 disposed inside the housing of the machine body, wherein the first support member 40 has a first end and a second end opposite to each other in the length direction of the heat generating member 10, an accommodating space is formed inside the first support member 40, the air outlet channel 40a is disposed through the first end of the first support member 40 along the length direction of the heat generating member 10, the second support member 50 is inserted into the second end of the first support member 40, and the air inlet channel 50a is disposed through the second support member 50 along the length direction of the heat generating member 10.

The heating device is disposed in the accommodating space of the first support member 40, wherein an end of the accommodating member 20 away from the heating member 10 is connected (e.g. plug-in connection) to the first end of the first support member 40 so that the accommodating channel 20a is in sealing communication with the air outlet channel 40a, and an end of the heat insulating member 30 away from the heating member 10 is connected (e.g. plug-in connection) to the second support member 40 so that the drainage channel 30a is in sealing communication with the air inlet channel 50 a.

By using the accommodating member 20 and the heat insulating member 30 to establish a structural connection between the heating device and the host device, heat generated by the heating member 10 can be prevented from being directly transmitted to the host device in a heat conduction manner, and particularly, heat conduction or heat exchange between the heating member 10 and the second supporting member 50 can be prevented by the heat insulating member 30, so that the heat can be finally acted on the aerosol substrate as intensively as possible by means of air flow flowing through and the accommodating member 20, and meanwhile, the heating device is accommodated in the accommodating space of the first supporting member 40, so that heat can be reduced or prevented from being transmitted to the outside of the host device in a heat radiation manner and the like, thereby effectively improving the heat utilization rate and reducing the power consumption of the aerosol generating device.

It should be noted that the bold solid lines with arrows in fig. 4 represent the general path or direction of the airflow within the aerosol-generating device.

The foregoing description of the utility model has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the utility model pertains, based on the idea of the utility model.

Claims (10)

1. A heating device, characterized in that the heating device comprises:

The heating element is used for generating heat, and is provided with an air inlet end and an air outlet end which are opposite along the length direction of the heating element, wherein an air flow channel is formed in the heating element;

A receiving member disposed in contact with the air outlet end of the heating member, the receiving member having a receiving passage formed therein for receiving the aerosol-generating substrate and communicating with the air flow passage, and

The heat insulation piece is arranged at the air inlet end of the heating piece in a contact manner, a drainage channel communicated with the airflow channel is formed in the heat insulation piece, and the heat insulation piece is used for preventing heat generated by the heating piece from being conducted towards one side of the heat insulation piece;

The material heat conductivity coefficient of the heating element is larger than that of the accommodating element, and the material heat conductivity coefficient of the accommodating element is larger than that of the heat insulating element.

2. The heating device of claim 1, wherein the heat generating element comprises a heat exchanging core and a heat generating element arranged on the heat exchanging core, the heat exchanging core is arranged between the accommodating element and the heat insulating element in a contact manner, the air flow channel penetrates through the heat exchanging core, and the heat generating element, the heat insulating element and the accommodating element are not contacted with each other, so that heat generated by the heat generating element can be conducted to the heat exchanging core.

3. The heating device of claim 2, wherein a heat generating cavity is formed in the heat exchange core, the heat generating cavity is arranged separately from the air flow channel and the accommodating channel, and the heat generating body is accommodated in the heat generating cavity.

4. A heating apparatus according to claim 3, wherein the number of said air flow passages is plural, and the plural air flow passages are arranged at regular intervals around the geometric center line of said heat generating chamber.

5. The heating apparatus according to claim 2, wherein the heating element is a heating element made of an electric heating material capable of generating heat by energization, or is a heating element made of an electromagnetic material capable of generating heat by an alternating magnetic field.

6. The heating apparatus according to claim 1, wherein the heat generating member has a material heat conductivity of more than 50W/(m·k), the receiving member has a material heat conductivity of 3.0W/(m·k) to 50W/(m·k), and the heat insulating member has a material heat conductivity of 0.2W/(m·k) to 4.0W/(m·k).

7. The heating device of any one of claims 1-6, wherein the housing has a thermally conductive enclosure wall that encloses around the length to form the housing channel, the outlet end of the heat-generating element being inserted into the housing channel in contact with the thermally conductive enclosure wall;

And/or the heat-insulating piece is provided with a heat-insulating enclosing wall, the heat-insulating enclosing wall surrounds the length direction to form the drainage channel, and the air inlet end of the heating piece is inserted into the drainage channel in a manner of contacting the heat-insulating enclosing wall.

8. The heating device of claim 7, wherein the housing has a thermally conductive enclosure wall and the thermal shield has a thermally insulating enclosure wall, wherein:

The first limiting structure is used for propping against the air outlet end of the heating element so as to limit the relative position of the heating element and the accommodating element in the length direction;

The heat-insulating piece is also provided with a second limiting structure protruding out of the inner surface of the heat-insulating surrounding wall, and the second limiting structure is used for propping against the air inlet end of the heat-generating piece so as to limit the relative position of the heat-generating piece and the heat-insulating piece in the length direction.

9. An aerosol-generating device comprising a host device and a heating device according to any one of claims 1 to 8, wherein an air inlet channel and an air outlet channel are formed in the interior of the host device, the heating device being arranged between the air inlet channel and the air outlet channel, wherein the receiving channel is in communication with the air outlet channel, and the drainage channel is in communication with the air inlet channel.

10. An aerosol-generating device according to claim 9, wherein the host apparatus comprises:

A first support member having a first end and a second end opposite to each other in the longitudinal direction, wherein an accommodating space is formed inside the first support member, the air outlet passage is provided through the first end of the first support member in the longitudinal direction, and

The second support piece is connected with the second end of the first support piece through the plug bush, and the air inlet channel is arranged along the length direction and penetrates through the second support piece;

The heating device is arranged in the accommodating space, wherein the accommodating piece is connected with the first supporting piece so as to be in sealing communication with the accommodating channel and the air outlet channel, and the heat insulating piece is connected with the second supporting piece so as to be in sealing communication with the drainage channel and the air inlet channel.