Heating device and aerosol generating equipment

Abstract

The utility model discloses a heating device and aerosol generating equipment, the heating device comprises a heating piece, a containing piece and a heat insulation piece, the heating piece is provided with an air inlet end and an air outlet end which are opposite, and an airflow channel for guiding airflow to pass through the heating piece is formed in the heating piece; the accommodating part is arranged at the air outlet end of the heating part in a contact manner; an accommodating channel which is communicated with the airflow channel and is used for accommodating an aerosol generating substrate is formed in the accommodating part; the heat insulation piece is arranged at the air inlet end of the heating piece in a contact mode, 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 heat insulation piece arranged at the air inlet end of the heating piece is used for blocking heat generated by the heating piece, a single-end heat conduction structural form can be formed, the heat can act on airflow flowing through the heating piece and the containing piece in a concentrated mode, the utilization rate of the heat can be effectively increased, and power consumption during application of the heating device can be reduced; and the heating efficiency and effect of the hot air flow are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of aerosols, in particular to a heating device and an aerosol generating device. Background Art

[0002] An aerosol generating device is an electronic device that generates aerosol by heating an aerosol generating substrate. As the core component of the aerosol generating device, the heating device heats the aerosol generating substrate to a temperature that can produce aerosol but is not high enough to cause combustion, so that the aerosol generating substrate can generate a usable aerosol without burning.

[0003] At present, some heating devices mainly use hot air flow heating, that is, by heating the air flowing through the heating element to form a hot air flow, and in the process of the hot air flow flowing through the aerosol generating matrix, the aerosol generating matrix is ​​uniformly heated. Since the heating device heats the aerosol generating matrix with hot air flow, the heating temperature of the heating element of the heating device is usually relatively high, and the heat conduction of the heating element to both ends in the direction of the air flow is very fast; this also results in the heat generated by the heating element being unable to concentrate and quickly act on the air flow or the aerosol generating matrix, resulting in high power consumption and low heat utilization of the heating device. Utility Model Content

[0004] The utility model aims to provide a heating device and an aerosol generating device using the heating device, so as to achieve the purpose of improving heat utilization rate and reducing power consumption.

[0005] According to a first aspect, an embodiment provides a heating device, comprising:

[0006] A heating element, used to generate heat; the heating element has an air inlet end and an air outlet end opposite to each other along its length direction, and an air flow channel is formed inside the heating element; the air flow channel runs from the air inlet end of the heating element to the air outlet end of the heating element, and is used to guide the air flow to be heated to form a hot air flow when passing through the heating element;

[0007] a receiving member, which is arranged in contact with the air outlet end of the heating element, and the receiving member has a receiving channel in communication with the air flow channel, and the receiving channel is used to receive the aerosol generating matrix; and

[0008] A heat insulating member, arranged in contact with the air inlet end of the heating element, wherein a drainage channel connected to the air flow channel is formed inside the heat insulating member, and the heat insulating member is used to prevent the heat generated by the heating element from being conducted toward one side of the heat insulating member;

[0009] The thermal conductivity of the material of the heating element is greater than the thermal conductivity of the material of the receiving element, and the thermal conductivity of the material of the receiving element is greater than the thermal conductivity of the material of the heat insulating element.

[0010] In one embodiment, the heat-generating component includes a heat exchange core and a heating element disposed on the heat exchange core; the heat exchange core is contact-disposed between the receiving component and the heat insulating component, and the airflow channel passes through the heat exchange core; the heating element, the heat insulating component and the receiving component do not contact each other, so that the heat generated by the heating element can be conducted to the heat exchange core.

[0011] In one embodiment, a heating chamber is formed inside the heat exchange core, the heating chamber is isolated from the air flow channel and the receiving channel, and the heating element is received in the heating chamber.

[0012] In one embodiment, the number of the airflow channels is set to be multiple, and the multiple airflow channels are evenly spaced and arranged around the geometric center line of the heat-generating chamber.

[0013] In one embodiment, the heating element is a heating element made of an electrothermal material, and the heating element can generate heat when electricity is applied; or the heating element is a heating element made of an electromagnetic material, and the heating element can generate heat when an alternating magnetic field is applied.

[0014] In one embodiment, the thermal conductivity of the material of the heating element is greater than 50 W / (m·K), the thermal conductivity of the material of the receiving element is 3.0 W / (m·K)-50 W / (m·K), and the thermal conductivity of the material of the insulation element is 0.2 W / (m·K)-4.0 W / (m·K).

[0015] In one embodiment, the receiving member has a heat-conducting surrounding wall, and the heat-conducting surrounding wall is surrounded around the length direction to form the receiving channel, and the air outlet end of the heating element is inserted into the receiving channel in a manner of contacting the heat-conducting surrounding wall;

[0016] And / or the heat insulating component has a heat insulating surrounding wall, which is surrounded around the length direction to form the drainage channel, and the air inlet end of the heating component is inserted into the drainage channel in a manner of contacting the heat insulating surrounding wall.

[0017] In one embodiment, the receiving member has a heat-conducting surrounding wall, and the heat-insulating member has a heat-insulating surrounding wall; wherein:

[0018] The receiving member also has a first limiting structure protruding from the inner surface of the heat-conducting surrounding wall; the first limiting structure is used to abut against the air outlet end of the heating element to limit the relative position of the heating element and the receiving member in the length direction;

[0019] The thermal insulation component also has a second limiting structure protruding from the inner surface of the thermal insulation wall; the second limiting structure is used to abut the air inlet end of the heating component to limit the relative position of the heating component and the thermal insulation component in the length direction.

[0020] According to the second aspect, an embodiment provides an aerosol generating device, comprising a host device and the heating device described in the first aspect, wherein an air inlet channel and an air outlet channel are formed inside the host device, and the heating device is arranged between the air inlet channel and the air outlet channel; wherein the receiving channel is connected to the air outlet channel, and the drainage channel is connected to the air inlet channel.

[0021] In one embodiment, the host device comprises:

[0022] A first support member has a first end and a second end opposite to each other in the length direction, and a receiving space is formed inside the first support member; the air outlet channel is provided through the first end of the first support member along the length direction; and

[0023] A second support member, the sleeve being connected to the second end of the first support member, and the air inlet passage being arranged through the second support member along the length direction;

[0024] The heating device is arranged in the receiving space; wherein, the receiving member is connected to the first supporting member to seal and connect the receiving channel and the air outlet channel; the heat insulating member is connected to the second supporting member to seal and connect the drainage channel and the air inlet channel.

[0025] According to the above embodiment, the heating device includes a heating element, a receiving element and a heat insulating element. The heating element has an air inlet end and an air outlet end opposite to each other. An air flow channel for guiding the air flow through the heating element is formed inside the heating element. The receiving element is arranged in contact with the air outlet end of the heating element. A receiving channel for connecting the air flow channel and for accommodating the aerosol generating matrix is ​​formed inside the receiving element. The heat insulating element is arranged in contact with the air inlet end of the heating element. A drainage channel for connecting the air flow channel is formed inside the heat insulating element. The heat insulating element is used to prevent the heat generated by the heating element from being conducted toward one side of the heat insulating element. The material thermal conductivity of the heating element is greater than the material thermal conductivity of the receiving element, and the material thermal conductivity of the receiving element is greater than the material thermal conductivity of the heat insulating element. The heat insulating element can be used to block the heat generated by the heating element from the air inlet end of the heating element, forming a single-end heat conduction structure, so that the heat generated by the heating element can be concentrated on the air flow flowing through the heating element and the receiving element, thereby effectively improving the utilization rate of heat and reducing the power consumption when the heating device is used, and also helping to enhance the heating efficiency and effect of the hot air flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic diagram of the cross-sectional structure of a heating device according to an embodiment.

[0027] Figure 2 This is a schematic diagram of the structural decomposition of a heating device according to an embodiment (I).

[0028] Figure 3 This is a schematic diagram of the structural decomposition of a heating device according to an embodiment (II).

[0029] Figure 4 The figure is a schematic diagram of the cross-sectional structure of an aerosol generating device according to an embodiment.

[0030] Figure 5 The figure is a schematic diagram of the structural arrangement of a heating device in an aerosol generating device according to an embodiment.

[0031] In the figure:

[0032] 10. Heat-generating element; 10a. Air flow channel; 11. Heat exchange core; 11a. Heat-generating chamber; 12. Heat-generating element; 20. Receiving element; 20a. Receiving channel; 20b. First limiting structure; 30. Heat-insulating element; 30a. Drainage channel; 30b. Second limiting structure; 40a. First supporting element; 40a. Air outlet channel; 50. Second supporting element; 50a. Air inlet channel. DETAILED DESCRIPTION

[0033] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0034] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0035] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0036] See also Figures 1 to 3 The embodiment of the present application provides a heating device, which can be installed and applied in an aerosol generating device, and forms a hot air flow by heating the air flow passing through, and then heats the aerosol generating substrate mainly in the form of hot air flow to generate aerosol; the heating device includes a heating element 10, a receiving element 20, a heat insulating element 30 and other functional components that exist as needed; wherein the thermal conductivity (i.e., thermal conductivity or thermal conductivity) of the material of the heating element 10 is greater than the thermal conductivity of the material of the receiving element 20, and the thermal conductivity of the material of the receiving element 20 is greater than the thermal conductivity of the material of the heat insulating element 30, which is explained in detail below.

[0037] See also Figure 1 The heating element 10 is mainly used to generate heat to heat the airflow flowing through the heating element 10 to a preset temperature to form a hot airflow; an airflow channel 10a is formed inside the heating element 10 for guiding the airflow from the inside of the heating element 10 through the heating element 10.

[0038] For ease of distinction and description, the two ends of the heating element 10 in the air flow direction are respectively defined as the air inlet end and the air outlet end of the heating element 10, that is, the air flow channel 10a is set from the air inlet end of the heating element 10 to the air outlet end of the heating element 10a to guide the air flow into the heating element 10 from the air inlet end of the heating element 10 and out of the heating element 10 from the air outlet end of the heating element 10.

[0039] For example, see Figures 1 to 3 The overall outline of the heating element 10 is roughly a columnar structure with a preset length. The heating element 10 can be made of a high thermal conductivity material with a thermal conductivity greater than 50 W / (m·K) (i.e., 50 watts / meter·degree); the air flow channel 10a is set along the length direction of the heating element 10 or axially through the heating element 10.

[0040] See also Figure 1 The receiving member 20 can be made of a heat-conducting material with a thermal conductivity of 3.0W / (m·K)-50W / (m·K). The receiving member 20 is arranged in contact with the air outlet of the heating element 10, and is mainly used to receive an aerosol-generating substrate with a fixed or stable contour, such as a columnar aerosol-generating product. Specifically, a receiving channel 20a is formed inside the receiving member 20, and the receiving channel 20a is connected to the airflow channel 10a (for example, a sealed connection setting), and the aerosol-generating substrate can be received, placed or placed in the receiving channel 20a.

[0041] For example, see Figures 1 to 3 The receiving member 20 has a heat-conducting surrounding wall, which is arranged to surround the length direction of the heating element 10, thereby forming a receiving member 20 whose overall outline is roughly a tubular structure, and at least a part of the tube body space of the receiving member 20 is the receiving channel 20a; correspondingly, the air outlet end of the heating element 10 is inserted into the receiving member 20 or the receiving channel 20a in the form of its outer peripheral surface maintaining a close contact with the heat-conducting surrounding wall (or the channel wall of the receiving channel 20a), so as to realize the structural connection between the receiving member 20 and the heating element 10 and the communication between the airflow channel 10a and the receiving channel 20a.

[0042] When the heating element 10 generates heat, the heat generated by the heating element 10 can be conducted to the air flowing through the airflow channel 10a to be heated to form a hot airflow. By virtue of the connection between the receiving channel 20a and the airflow channel 10a, the hot airflow can be guided to the aerosol generating matrix received in the receiving channel 20a, thereby uniformly and fully heating the aerosol generating matrix with the help of the hot airflow to generate a usable aerosol.

[0043] As the heating temperature of the heating element 10 increases, part of the heat can be conducted to the receiving element 20 based on the contact connection relationship between the receiving element 20 and the heating element 10 (specifically, 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 receiving element 20 is used to heat the aerosol generating matrix from the peripheral side thereof to form a circumferential auxiliary heating effect.

[0044] See also Figure 1 The heat insulating member 30 can be made of a high-temperature resistant insulating material with a thermal conductivity between 0.2W / (m·K) and 4.0W / (m·K). The heat insulating member 30 is arranged in contact with the air inlet end of the heating element 10, and mainly plays a role in preventing the heat of the heating element 10 from being transferred to one side of the heat insulating member 30; specifically, a drainage channel 30a connected to the air flow channel 10a is formed inside the heat insulating member 30, and the air or airflow outside the heating device can be introduced into the interior of the heating device by means of the drainage channel 30a, and then flows into the receiving channel 20a or the aerosol generating matrix through the air flow channel 10a.

[0045] For example, see Figures 1 to 3 The heat insulating member 30 has a heat insulating surrounding wall, which is arranged to surround the heat generating member 10 in the length direction to construct the heat insulating member 30 whose overall outline is roughly a tubular structure, and at least a part of the tube body space of the heat insulating member 30 is the drainage channel 30a; correspondingly, the air inlet end of the heat generating member 10 is inserted into the heat insulating member 30 or the drainage channel 30a in the form of its outer peripheral surface being in close contact with the heat insulating surrounding wall (or the channel wall of the drainage channel 30a).

[0046] In other embodiments, the heating element 10, the receiving element 20 and the heat insulating element 30 may also adopt other suitable structural forms and connection methods; for example, a part of the receiving element 20 or the heat insulating element 30 is inserted into the air outlet or air inlet of the heating element 10; for another example, the heat insulating element 30 may adopt an annular structure, and the heat insulating element 30 covers the outer peripheral surface and the axial end surface of the air inlet end of the heating element 10. All these will not be elaborated here.

[0047] By utilizing the difference in thermal conductivity of the materials among the heating element 10, the receiving element 20 and the thermal insulation element 30, a thermal isolation effect can be formed at the air inlet end of the heating element 20 with the aid of the thermal insulation element 30, thereby effectively preventing the heat of the heating element 10 from being conducted toward the side of the thermal insulation element 30, thereby constructing the entire heating device into a single-end heat-conducting or heat-generating structure.

[0048] On the one hand, the heat can be concentrated and conducted toward the side away from the insulation component 30, thereby concentrating on the airflow flowing through the heating component 10 and the receiving component 20, achieving rapid heating of the airflow, which is beneficial to improve the utilization rate of heat, reduce the power consumption of the device, and enhance the heating efficiency and effect of the hot airflow.

[0049] On the other hand, by establishing a structural connection between the heat insulating member 30 and the receiving member 20 and the relevant components in the aerosol generating device, heat loss due to direct contact between the heating element 10 and the relevant components can be avoided. For example, the heat insulating member 30 can reduce or block heat conduction between the heating element 10 and the relevant components in the aerosol generating device.

[0050] See also Figures 1 to 3 The heating element 10 includes a heat exchange core 11 and a heating element 12; the heat exchange core 11 is generally a columnar structure, and the airflow channel 10a runs through the heat exchange core 11. It can also be understood that the two opposite ends of the heat exchange core 11 in its length direction or axial direction are the air inlet and air outlet of the heating element 10, that is, the heat exchange core 11 is contacted and arranged between the receiving element 20 and the heat insulating element 30. A heating chamber 11a is arranged inside the heat exchange core 11, which is isolated from or independent of the airflow channel 10a and the receiving channel 20a, and the heating element 12 is arranged in the heating chamber 11a, and the heating element 12, the heat insulating element 30 and the receiving element 20 do not contact each other.

[0051] As for the heating element 12, the heating element 12 can be a heating element made of electromagnetic material or a heating element made of electric heating material, and the selection and setting is made according to the application environment of the heating device or the functional configuration of the aerosol generating device.

[0052] For example, the heating element 12 can be made of ferromagnetic materials or alloy materials containing elements such as iron, nickel, cobalt, and titanium, or can be made of inorganic non-metallic materials with ferromagnetic properties such as magnetized ceramics and carbon fibers; for example, the heating element 12 can be particles of electromagnetic material and filled in the heating cavity 11a, or the heating element 12 can be a columnar structure or a sheet structure of electromagnetic material and arranged in the heating cavity 11a.

[0053] Correspondingly, an electromagnetic coil matching the heating element 12 is configured in the heating device or the aerosol generating equipment. For example, the electromagnetic coil can be arranged around the heating element 10 and on the periphery of the heating element 10. The electromagnetic coil is used to provide a changing electromagnetic field environment for the heating element 12, so that the heating element 12 can generate heat under the action of the alternating magnetic field.

[0054] For example, the heating element 12 can be made of electrothermal materials such as nickel-chromium alloy and iron-chromium alloy. For example, the heating element 12 can be a mesh-shaped or spiral-shaped structure of the electrothermal material. The main part of the heating element 12 is arranged in the heating cavity 11a, and the terminal part of the heating element 12 can be led out of the heat exchange core 11 from the heating cavity 11a (for example, the heating cavity 11a is a groove cavity structure with a notch located on the air inlet end surface of the heat exchange core 11). Correspondingly, a control circuit electrically connected to the heating element 12 can be configured in the aerosol generating device. By means of the control circuit, power is supplied to the heating element 12, so that the heating element 12 can generate heat due to power supply.

[0055] Therefore, by arranging the heating element 12 inside the heat exchange core 11 and utilizing the structural relationship that the heating element 12, the receiving component 20 and the thermal insulation component 30 do not contact each other, the heat generated by the heating element 12 can be concentratedly conducted to the heat exchange core 12, so that the heat exchange with the airflow and the receiving component 20 is completed with the help of the heat exchange core 12, forming a heating structure with hot air flow heating as the main heating and circumferential heating of the receiving component 20 as the auxiliary heating; at the same time, the heat conduction to the thermal insulation component 30 can also be minimized, thereby enhancing the thermal isolation effect of the thermal insulation component 30.

[0056] In other embodiments, the heating element 12 may also be disposed outside the heat exchange core 11 , for example, wrapped around or enclosed on the outer circumference of the heat exchange core 11 , so as to meet different application requirements of the heating device.

[0057] In one embodiment, see Figures 1 to 3 The number of air flow channels 10a is set to be multiple, and the multiple air flow channels 10a are evenly and spacedly arranged around the geometric center line of the heat exchange chamber 11a; it can also be understood that the heat exchange chamber 11a (or the heat source 12) is set in the geometric center area of ​​the heat exchange core 11, and the air flow channels 10a are evenly and spacedly arranged around the heat exchange chamber 11a in the circumferential and radial directions of the heat exchange core 11.

[0058] Thus, by arranging the airflow channels 10a around the heating chamber 11a at even intervals, the airflow can be guided to flow through the heating element 10 more evenly, so that the airflow is evenly heated by the heating element 12, thereby forming a hot airflow with a relatively uniform temperature, providing structural support for evenly and fully heating the aerosol generation matrix. At the same time, by utilizing the structural form in which the heating chamber 11a is isolated from the airflow channels 10a and the receiving channel 20a, it is also possible to prevent the airflow mixed with aerosol from flowing back into the heating chamber 11a and affecting the heating performance of the heating element 12.

[0059] In other embodiments, the heating chamber 11a may be an annular groove or an annular chamber structure arranged around the geometric center line of the heat exchange core 11, and the air flow channels 10a are evenly and spaced apart on the radial inner side, radial outer side, or radial inner and outer sides of the heating chamber 11a; thereby, a hot air flow with relatively uniform temperature can also be formed.

[0060] In one embodiment, the thermal conductivity (i.e., thermal conductivity or heat conductivity) of the material of the heat exchange core 11 is greater than the thermal conductivity of the material of the receiving member 20, and the thermal conductivity of the material of the receiving member 20 is greater than the thermal conductivity of the material of the thermal insulation member 30; for example, the heat exchange core 11 can adopt a high thermal conductivity material with a thermal conductivity greater than 50 W / (m·K), the receiving member 20 can adopt a thermal conductive material with a thermal conductivity between 3.0 W / (m·K) and 50 W / (m·K), and the thermal insulation member 30 can adopt a high temperature resistant insulation material with a thermal conductivity between 0.2 W / (m·K) and 4.0 W / (m·K).

[0061] Therefore, by selecting and configuring the material properties of the heat exchange core 11, the receiving 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, ensuring that the heat generated by the heating element 12 is conducted to the heat exchange core 11 as concentratedly as possible, and then by means of heat exchange or heat conduction between the heat exchange core 11 and the airflow and the receiving member 20, a heating structure dominated by hot airflow is finally formed. 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 barrier effect of the heat insulating member 30 is enhanced.

[0062] In one embodiment, see Figure 2 and Figure 3 A first limiting structure 20b is also provided inside the receiving member 20. Exemplarily, the first limiting structure 20b can be an annular protrusion structure protruding from the inner surface of the heat-conducting surrounding wall, or a plurality of protrusion structures arranged at intervals around the geometric center line of the receiving member 20, or other suitable structures; with the help of the first limiting structure 20b, the receiving channel 20a can be divided into a receiving section and a connecting section distributed in the length direction of the heating element 10, the aerosol generating matrix is ​​contained in the receiving section, and the air outlet end of the heating element 10 or the heat exchange core 11 is inserted in the connecting section.

[0063] Therefore, by using the first limiting structure 20b to support the axial end face of the air inlet end, the relative position of the heating element 10 and the receiving element 20 (that is, the depth of the heating element 10 inserted into the receiving channel 20a) and the relative position of the aerosol matrix and the receiving element 20 can be effectively limited, which is beneficial to improving the stability of the structural connection between the heating element 10 and the receiving element 20.

[0064] For some examples, see Figure 2 and Figure 3 The heat insulating member 30 can refer to the receiving member 20, and a second limiting structure 30b is set inside the heat insulating member 30. By means of the second limiting structure 30b, the air inlet end face of the heating element 10 or the heat exchange core 11 is supported, and the relative position between the heat insulating member 30 and the heating element 10 can be limited to improve the stability of the structural connection between the two.

[0065] See also Figure 4 and Figure 5 , an embodiment of the present application also provides an aerosol generating device, including a host device and the heating device of the aforementioned embodiment.

[0066] Exemplarily, the host device includes a shell component and a power supply component; wherein the shell component can be constructed by combining a body shell, internal pipes, etc., and the user can hold, move, operate and use the aerosol generating device with the help of the shell component; the power supply component is arranged in the shell component, which can be understood as a collection of related components such as a power supply, a control circuit board, an airflow sensor, and a key switch. With the help of the structural and functional coordination relationship between the power supply component and the heating device (for example, the electrical connection relationship with the heating element 12), the heating device (specifically the heating element 10) can be controlled to start heating, stop heating, adjust the heating mode, etc.

[0067] An air inlet channel 50a and an air outlet channel 40a are formed inside the host device, and the heating device is connected and arranged between the air inlet channel 50a and the air outlet channel 40a; specifically, the drainage channel 30a is sealed and connected to the air inlet channel 50a, and the receiving channel 20a is sealed and connected to the air outlet channel 40a. With the connection relationship between the receiving channel 20a and the air outlet channel 40a, the aerosol generating substrate can be inserted and placed in the receiving channel 20a through the air outlet channel 40a.

[0068] When the aerosol generating device is activated, negative pressure can be applied to the outlet end of the outlet channel 40a (for example, by sucking in the aerosol matrix), causing the air outside the device to enter the air flow channel 10a through the air inlet channel 50a and the drainage channel 30a, and then be heated to form a hot air flow that enters the receiving channel 20a or the aerosol generating matrix, thereby heating the aerosol generating matrix and generating an aerosol. The generated aerosol can be discharged from the outlet end of the outlet channel 40a along with the air flow to be used.

[0069] In one embodiment, see Figure 4 and Figure 5 The shell assembly includes a first support member 40 and a second support member 50 arranged inside the body shell; wherein the first support member 40 has a first end and a second end relative to each other in the length direction of the heat generating element 10, a receiving space is formed inside the first support member 40, and an air outlet channel 40a is arranged through the first end of the first support member 40 along the length direction of the heat generating element 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 arranged through the second support member 50 along the length direction of the heat generating element 10.

[0070] Correspondingly, the heating device is arranged in the receiving space of the first support member 40; wherein, the end of the receiving member 20 away from the heating element 10 is connected to the first end of the first support member 40 (for example, a socket connection) so that the receiving channel 20a is sealed and connected to the air outlet channel 40a; the end of the heat insulation member 30 away from the heating element 10 is connected to the second support member 40 (for example, a socket connection) so that the drainage channel 30a and the air inlet channel 50a remain sealed and connected.

[0071] By using the receiving member 20 and the heat insulating member 30 to establish a structural connection between the heating device and the host device, it is possible to prevent the heat generated by the heating element 10 from being directly transferred to the host device in a heat conduction manner. In particular, the heat insulating member 30 can hinder the heat conduction or heat exchange between the heating element 10 and the second support member 50, so that the heat can be used as concentratedly as possible on the aerosol matrix with the help of the airflow and the receiving member 20. At the same time, the heating device is accommodated in the receiving space of the first support member 40, which can reduce or prevent heat from being transferred to the outside of the host device in a heat radiation manner or the like. As a result, the heat utilization rate can be effectively improved and the power consumption of the aerosol generating device can be reduced.

[0072] It should be noted that Figure 4 The bold solid line with an arrow in it represents the approximate path or direction of airflow within the aerosol generating device.

[0073] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A heating device, characterized in that: The heating device comprises: A heating element, used to generate heat; the heating element has an air inlet end and an air outlet end opposite to each other along its length direction, and an air flow channel is formed inside the heating element; the air flow channel runs from the air inlet end of the heating element to the air outlet end of the heating element, and is used to guide the air flow to be heated to form a hot air flow when passing through the heating element; a receiving member, which is arranged in contact with the air outlet end of the heating element, and the receiving member has a receiving channel in communication with the air flow channel, and the receiving channel is used to receive the aerosol generating matrix; and A heat insulating member, arranged in contact with the air inlet end of the heating element, wherein a drainage channel connected to the air flow channel is formed inside the heat insulating member, and the heat insulating member is used to prevent the heat generated by the heating element from being conducted toward one side of the heat insulating member; The thermal conductivity of the material of the heating element is greater than the thermal conductivity of the material of the receiving element, and the thermal conductivity of the material of the receiving element is greater than the thermal conductivity of the material of the heat insulating element.

2. The heating device according to claim 1, characterized in that The heat-generating component includes a heat exchange core and a heat-generating body arranged on the heat exchange core. The heat exchange core is arranged in contact between the receiving component and the heat insulating component, and the air flow channel runs through the heat exchange core. The heat-generating body, the heat insulating component and the receiving component do not contact each other, so that the heat generated by the heat-generating body can be conducted to the heat exchange core.

3. The heating device according to claim 2, characterized in that A heating chamber is formed inside the heat exchange core, the heating chamber is isolated from the air flow channel and the receiving channel, and the heating element is received in the heating chamber.

4. The heating device according to claim 3, characterized in that The number of the airflow channels is set to be multiple, and the multiple airflow channels are evenly spaced and arranged around the geometric center line of the heating chamber.

5. The heating device according to claim 2, characterized in that: The heating element is a heating element made of an electrothermal material, and can generate heat when electricity is supplied; or the heating element is a heating element made of an electromagnetic material, and can generate heat when an alternating magnetic field is applied.

6. The heating device according to claim 1, characterized in that The thermal conductivity of the material of the heating element is greater than 50 W / (m·K), the thermal conductivity of the material of the receiving element is 3.0 W / (m·K)-50 W / (m·K), and the thermal conductivity of the material of the heat insulating element is 0.2 W / (m·K)-4.0 W / (m·K).

7. The heating device according to any one of claims 1 to 6, characterized in that: The receiving member has a heat-conducting surrounding wall, which surrounds the length direction to form the receiving channel, and the air outlet end of the heating element is inserted into the receiving channel in a manner of contacting the heat-conducting surrounding wall; And / or the heat insulating component has a heat insulating surrounding wall, which is surrounded around the length direction to form the drainage channel, and the air inlet end of the heating component is inserted into the drainage channel in a manner of contacting the heat insulating surrounding wall.

8. The heating device according to claim 7, characterized in that The receiving member has a heat-conducting surrounding wall, and the heat-insulating member has a heat-insulating surrounding wall; wherein: The receiving member also has a first limiting structure protruding from the inner surface of the heat-conducting surrounding wall; the first limiting structure is used to abut against the air outlet end of the heating element to limit the relative position of the heating element and the receiving member in the length direction; The thermal insulation component also has a second limiting structure protruding from the inner surface of the thermal insulation wall; the second limiting structure is used to abut the air inlet end of the heating component to limit the relative position of the heating component and the thermal insulation component in the length direction.

9. An aerosol generating device, characterized in that: It comprises a host device and a heating device as described in any one of claims 1 to 8, wherein an air inlet channel and an air outlet channel are formed inside the host device, and the heating device is arranged between the air inlet channel and the air outlet channel; wherein the receiving channel is connected to the air outlet channel, and the drainage channel is connected to the air inlet channel.

10. An aerosol generating device according to claim 9, characterized in that The host device comprises: A first support member has a first end and a second end opposite to each other in the length direction, and a receiving space is formed inside the first support member; the air outlet channel is provided through the first end of the first support member along the length direction; and A second support member, the sleeve being connected to the second end of the first support member, and the air inlet passage being arranged through the second support member along the length direction; The heating device is arranged in the receiving space; wherein, the receiving member is connected to the first supporting member to seal and connect the receiving channel and the air outlet channel; the heat insulating member is connected to the second supporting member to seal and connect the drainage channel and the air inlet channel.

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