Heating assembly and aerosol generating device

Abstract

The utility model discloses a heating assembly and an aerosol generating device. The heating assembly comprises a heating element and an induction element, at least one part of the heating element is in a spiral shape, the heating element has electrical conductivity, and when the heating element is powered on, an alternating magnetic field and heat are generated and used for heating the atomization medium; the induction element is arranged in the alternating magnetic field and is excited to generate an induction electric signal. High-frequency alternating current is applied to the heating element, so that the heating element generates an alternating magnetic field in a heating area while generating heat, and the intensity of the alternating magnetic field changes along with the change of a temperature field. The induction element is arranged in the alternating magnetic field and is excited to generate an induction electric signal, the induction electric signal directly feeds back the change of the alternating magnetic field, namely the change of a temperature field, so that accurate temperature feedback is realized, a temperature measurement area is overlapped with a heating area, and the temperature feedback is real.

Description

Technical Field

[0001] The present application relates to the technical field of atomization, and more specifically, to a heating component and an aerosol generating device. Background Art

[0002] In the technical field of atomization, traditional heating appliances use methods such as thermocouples, temperature measurement films or TCRs for temperature field control. There are problems of asynchronous temperature measurement and heating, the temperature measurement position does not coincide with the actual temperature field, the temperature measurement result has a large difference from the actual temperature of the atomization medium, and the authenticity of temperature feedback is insufficient. Summary of the Utility Model

[0003] In view of the above problems, the embodiments of the present application provide a heating component and an aerosol generating device.

[0004] The heating component of the embodiment of the present application includes a heating element and a sensing element. Among them, at least a part of the heating element is in a spiral shape and the heating element has conductivity. When the heating element is powered on, it generates an alternating magnetic field and heat and is used to heat the atomization medium; the sensing element is arranged in the alternating magnetic field and is excited to generate an induced electrical signal.

[0005] The heating component of the embodiment of the present application applies a high-frequency alternating current to the heating element, so that the heating element generates heat to heat the atomization medium and also generates an alternating magnetic field in the heating area. When the temperature field formed by the heating element changes, it will cause the strength of the alternating magnetic field to change. The sensing element is arranged in the alternating magnetic field and is excited to generate an induced electrical signal. The induced electrical signal directly reflects the change of the alternating magnetic field, that is, the change of the temperature field, so as to achieve accurate temperature feedback. In addition, the temperature measurement area of the sensing element coincides with the heating area, and the temperature feedback is real. In addition, the heating current for controlling the heating of the heating element and the high-frequency alternating current for forming an alternating magnetic field around the heating element can be synchronously input for operation, realizing synchronous control of heating and temperature measurement. Such a control method has the advantages of fast, accurate and timely feedback.

[0006] In some embodiments, the heating component includes a housing member, the housing member forms a receiving space, and the receiving space is used to receive the atomization medium, and the heating element is sleeved outside the housing member.

[0007] In this way, the heating element is sleeved outside the housing member, with a simple structure, and is conducive to the circumferential fitting of the heating element and the housing member, improving the heat utilization rate.

[0008] In some embodiments, the housing member is a high-temperature resistant insulating tube.

[0009] Thus, the accommodating member is a heat-resistant insulating tube, which can maintain structural stability when the heating element heats the atomization medium and is immune to electromagnetic interference during temperature measurement and control. In other words, the accommodating member does not interfere with the generation and change of the alternating magnetic field and the operation of the induction element.

[0010] In some embodiments, the induction element is sleeved outside the heating element.

[0011] Thus, by sleeving the induction element outside the heating element, the structure is compact and convenient for assembly.

[0012] In some embodiments, the heating element spirally extends and is generally cylindrical, and the induction element is in an open-ring shape and is sleeved at the intermediate position of the heating element along the axis.

[0013] Thus, the heating element spirally extends and is generally cylindrical. When the heating element is powered on, the magnetic force lines of the alternating magnetic field formed extend along the axis of the heating element around the heating element. The induction element is in an open-ring shape, which is beneficial to forming a current loop for the induced electrical signal. The induction element is sleeved at the intermediate position of the heating element along the axis, so that the induction element is in a region where the magnetic force lines are uniform and concentrated, and is also in an effective heating region where the temperature field is uniform and the heat is concentrated, which is beneficial to improving the authenticity, accuracy and synchronization of temperature feedback.

[0014] In some embodiments, the heating assembly includes a shielding device, and the shielding device covers the heating element and the induction element, and the shielding device is used to shield the alternating magnetic field.

[0015] Thus, by covering the heating element and the induction element with the shielding device, the alternating magnetic field generated by the heating element is shielded, thereby preventing the alternating magnetic field from interfering with the parts outside the heating assembly.

[0016] In some embodiments, the heating element spirally extends and is generally cylindrical, and the shielding device includes a shielding plate and a shielding cover. The shielding cover surrounds the heating element and forms an opening at the axial end, and the shielding plate covers the axial end of the shielding cover. The shielding cover and the shielding plate jointly form an electromagnetic interval, and the electromagnetic interval is used to accommodate the heating element and the induction element and limit the generation range of the alternating magnetic field.

[0017] Thus, by surrounding the heating element with the shielding cover and covering it with the shielding plate at the axial end, an electromagnetic interval is formed, and the heating element and the induction element are accommodated in the electromagnetic interval, effectively limiting the magnetic field range formed after the heating element is powered on, and avoiding the interference of the alternating magnetic field on other parts.

[0018] In some embodiments, the heating element includes a sealing device, and the sealing device is hermetically connected to the axial end of the heating element and the shielding device.

[0019] In this way, the axial end of the heating element is hermetically connected to the shielding device through the sealing device, and the gap between the two axial ends of the heating element and the shielding device is sealed, preventing the aerosol formed by atomization from entering the shielding device and causing contamination.

[0020] In some embodiments, the heating assembly includes a power source and a control circuit electrically connected to the power source. The power source is used to supply power to the heating element, and the control circuit is electrically connected to the sensing element. The control circuit is used to receive the sensed electrical signal and control the output power of the power source according to the sensed electrical signal.

[0021] In this way, by electrically connecting the control circuit to the sensing element, the sensing element can transmit the sensed electrical signal to the control circuit, realizing accurate temperature feedback. Thus, the control circuit obtains real-time data of the temperature field and controls the output of the power source according to the real-time temperature, adjusting the heating temperature within a reasonable range, achieving accurate and timely temperature control, and reducing problems such as overheating and burning.

[0022] The aerosol generating device according to the embodiment of the present application includes the heating assembly of any of the above embodiments.

[0023] The aerosol generating device according to the embodiment of the present application includes the heating assembly of the above embodiment. Therefore, the aerosol generating device has all the beneficial effects of the heating assembly.

[0024] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0026] Figure 1 is a schematic structural diagram of the heating assembly according to the embodiment of the present application;

[0027] Figure 2 is a schematic structural diagram of the heating assembly according to the embodiment of the present application from a top view perspective;

[0028] Figure 3 is a schematic cross-sectional structural diagram of the heating assembly according to the embodiment of the present application;

[0029] Figure 4 is an exploded structural diagram of the heating assembly according to the embodiment of the present application.

[0030] MAIN ELEMENT SYMBOL DESCRIPTION:

[0031] 100. Heating component; 10. Heating element; 11. Pin; 20. Inductive element; 21. Annular part; 22. Power connection part; 201. Opening; 30. Housing; 301. Accommodating space; 40. Shielding device; 41. Shielding plate; 411. Cover plate; 412. First support plate; 413. Second support plate; 42. Shielding cover; 401. Electromagnetic region; 402. Open end; 50. Sealing device; 51. Sealing rubber ring; 60. Power supply; C. Capacitor; 70. Control circuit. Detailed implementation manners

[0032] The following describes in detail the implementation manners of the present application. Examples of the implementation manners are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The implementation manners described below by referring to the accompanying drawings are exemplary only for explaining the present application and should not be construed as a limitation to the present application.

[0033] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0034] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection, or a connection that can communicate with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] In this application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0036] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure of this application, components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit this application. In addition, this application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0037] An aerosol generating device is a structure capable of generating heat through electromagnetic action and acting on an atomization medium to generate an aerosol. The atomization medium is a substance that has been processed and can generate an aerosol when heated. The atomization medium is atomized by heat to form an aerosol. The aerosol can be visible or invisible and can include vapor (e.g., fine particulate matter in a gaseous state, which is usually a liquid or solid at room temperature), as well as liquid droplets of gas and condensed vapor. The aerosol may contain volatile compounds. The user can inhale the aerosol into the mouth, nasal cavity or lungs through the mouth or nose. The aerosol inhaled into the user's respiratory system can be used for various purposes such as eating, medicating, health care, and entertainment.

[0038] The form of the atomization medium can be all-solid or semi-solid, or can also be liquid. For example, the solid atomization medium can be a product of a plant's flower, stem or leaf prepared by processes such as roll pressing, thick slurry, die casting, and extrusion. Another example is that the liquid atomization medium can include a liquid composition based on plant extracts and / or various flavoring agents.

[0039] Please refer to Figures 1 - 3 , the heating component 100 of the embodiment of this application includes a heating element 10 and a sensing element 20. Among them, at least a part of the heating element 10 is in a spiral form and the heating element 10 has electrical conductivity. When the heating element 10 is powered on, it generates an alternating magnetic field and heat and is used to heat the atomization medium; the sensing element 20 is arranged in an alternating magnetic field (not shown in the figure) and is excited to generate an induced electrical signal.

[0040] In the heat generating component 100 of the embodiment of the present application, by applying a high-frequency alternating current to the heating element 10, the heating element 10 generates heat to heat the atomization medium and also generates an alternating magnetic field in the heating area. When the temperature field formed by the heating element 10 changes, the intensity of the magnetic field will change. The induction element 20 is arranged in the alternating magnetic field and is excited to generate an induction electrical signal. The induction electrical signal directly reflects the change of the alternating magnetic field, that is, the change of the temperature field, so as to achieve accurate temperature feedback. Moreover, the temperature measurement area of the induction element 20 coincides with the heating area, and the temperature response is real. In addition, the heating current for controlling the heating of the heating element 10 and the high-frequency alternating current for forming an alternating magnetic field around the heating element 10 can be synchronously input for operation, realizing synchronous control of heating and temperature measurement. Such a control method has the advantages of fast, accurate and timely feedback.

[0041] Specifically, the heating element 10 has electrical conductivity. When the heating element 10 is energized, electrical energy is converted into heat energy to heat the atomization medium. The heating element 10 has pins 11 for connecting electricity. The heating element 10 is connected to the power supply 60 and other electrical components through the pins 11, and a high-frequency alternating current is switched on to generate an alternating magnetic field around the heating element 10. Outside the spiral-shaped part of the heating element 10, the direction of the magnetic field lines of the alternating magnetic field points to the spiral axis.

[0042] A relatively large heating current and a high-frequency micro current can be simultaneously passed through the heating element 10. The heating element 10 is switched on with the heating current and forms a loop, and quickly heats up under the action of inductance to heat the atomization medium. The high-frequency micro alternating current generates a high-frequency alternating magnetic field, forming a control source for the heating temperature field of the heating element 10.

[0043] The heating current and the high-frequency micro current can be output in one path to simplify the control source. The heating current and the high-frequency micro current can also be separated into two paths for output. The heating current and the high-frequency micro current can be synchronously input for operation, making the temperature control accurate and timely.

[0044] The heat generated by the heating element 10 can be transmitted to the atomization medium by means of heat radiation and / or heat transfer.

[0045] Optionally, the heating element 10 is a metal wire, metal strip, metal wire, etc. made of a metal material. The heating element 10 extends along a spiral path and is wound around the periphery of the atomization medium to form a circumferential temperature field to heat the atomization medium.

[0046] The sensing element 20 has electrical conductivity and is disposed close to the heating element 10. When the heating element 10 is powered on and an alternating magnetic field is formed around the heating element 10, the sensing element 20 is placed in the alternating magnetic field. It is easy to understand that, based on Faraday's law of electromagnetic induction, the sensing element 20 generates an electric current in the changing magnetic field. When the position of the sensing element 20 relative to the heating element 10 is fixed, the magnitude and direction of the current are determined by the strength and direction of the alternating magnetic field. The electric current generated by the sensing element 20 under the excitation of the alternating magnetic field is also the induced electric signal, and the induced electric signal is directly related to the change of the alternating magnetic field. Also, when the temperature field formed by the heating element 10 changes, it will cause the strength of the magnetic field to change, and the sensing element 20 feeds back the change of the temperature field of the heating element 10 by outputting the induced electric signal.

[0047] Please refer to Figure 3 and Figure 4 , in some embodiments, the heating assembly 100 includes a housing member 30. The housing member 30 forms a receiving space 301 for receiving an atomization medium, and the heating element 10 is sleeved outside the housing member 30.

[0048] In this way, the heating element 10 is sleeved outside the housing member 30, with a simple structure, which is conducive to the circumferential fitting of the heating element 10 and the housing member 30, improving the heat utilization rate.

[0049] Specifically, the housing member 30 can be a hollow tube body. At least one end of the two ends of the housing member 30 in its own axial direction forms a through hole to accommodate the loading of the atomization medium and the escape of the aerosol. The cross-sectional shape of the housing member 30 can be circular, elliptical, triangular, square, rhombus, polygonal, star-shaped, racetrack-shaped or other irregular shapes, and the present application does not limit this. Exemplarily, the cross-sectional shape of the housing member 30 is circular, and the housing member 30 is a hollow circular tube with both ends connected.

[0050] The housing member 30 can also be a hollow or partially hollow sphere or a structure similar to a capsule. The atomization medium can be inserted into the housing member 30 or pre-set in the housing member 30.

[0051] Optionally, the housing member 30 is made of a transparent material, so that the housing member 30 can transmit the infrared radiation generated by the heating element 10, improving the heating efficiency. For example, the housing member 30 is made of glass, quartz glass, transparent ceramic, etc.

[0052] Optionally, the heating element 10 is sleeved outside the cylindrical housing member 30, and the heating element 10 and the housing member 30 are coaxial to improve the circumferential uniformity of the temperature field.

[0053] Optionally, the heating element 10 surrounds the outside of the cylindrical housing member 30 and spirally extends along the axial direction of the housing member 30. The heating element 10 is generally cylindrical as a whole and fits against the outer wall surface of the housing member 30.

[0054] In some embodiments, the accommodating member 30 is a high-temperature resistant insulating tube.

[0055] Thus, the accommodating member 30 is a high-temperature resistant insulating tube, so that the structure can be kept stable when the heating element 10 heats the atomization medium, and it can be protected from electromagnetic interference during the temperature measurement and control process. In other words, the accommodating member 30 does not interfere with the generation and change of the alternating magnetic field and the operation of the induction element 20.

[0056] The accommodating member 30 has insulation. When the heating element 10 contacts the wall surface of the accommodating member 30 and is electrically connected, the accommodating member 30 is not connected to the circuit formed by the heating element 10. The heating element 10 is sleeved on the accommodating member 30, and the alternating magnetic field generated by the heating element 10 passes through the accommodating member 30, and the accommodating member 30 does not generate an electromagnetic reaction. Exemplarily, the accommodating member 30 is a glass tube.

[0057] Optionally, the temperature range that the accommodating member 30 can withstand is above 600 °C.

[0058] Please continue to refer to Figure 3 and Figure 4 In some embodiments, the induction element 20 is sleeved outside the heating element 10.

[0059] Thus, by sleeving the induction element 20 outside the heating element 10, the structure is compact and convenient for assembly.

[0060] Specifically, the induction element 20 has conductivity. The induction element 20 is sleeved outside the heating element 10 and is close to but not in contact with the heating element 10. The heating element 10 is connected to an alternating current to form an alternating magnetic field. The alternating magnetic field is distributed around the heating element 10, and at least a part of the magnetic force lines of the alternating magnetic field pass through the induction element 20.

[0061] Exemplarily, the heating element 10 is integrally in a solenoid shape, and the induction element 20 is sleeved outside the heating element 10, so that the induction element 20 is completely located in the alternating magnetic field. Such a setting can improve the induction sensitivity of the induction element 20.

[0062] Please continue to refer to Figure 3 and Figure 4 In some embodiments, the heating element 10 extends spirally and is generally in a cylindrical shape, and the induction element 20 is in an open-ring shape and is sleeved at the middle position of the heating element 10 in the axial direction.

[0063] Thus, the heating element 10 extends in a spiral shape and is generally cylindrical. When the heating element 10 is powered on, the magnetic force lines of the alternating magnetic field formed extend axially along the periphery of the heating element 10. The induction element 20 is in an open-ring shape, which is conducive to forming a current loop for inducing an electric signal. The induction element 20 is sleeved at an intermediate position of the heating element 10 in the axial direction, so that the induction element 20 is in a region where the magnetic force lines are evenly distributed, and is also in an effective heating region with a uniform temperature field and concentrated heat, thereby facilitating improving the authenticity, accuracy, and synchronization of temperature feedback.

[0064] Specifically, the heating element 10 extends in a spiral shape, and the pitch of the heating element 10 can be relatively uniform in the axial direction of the heating element 10, so that the distribution density of the magnetic force lines of the alternating magnetic field is relatively uniform, which is conducive to eliminating variables for measuring the temperature of the induction element 20. The starting end and the ending end of the spiral extension of the heating element 10 are respectively located at two end parts of the axial direction of the accommodating part 30, and each is connected to a pin 11 to connect to two output ends of the power supply 60.

[0065] The induction element 20 includes an annular part 21 surrounding the heating element 10 and a power connection part 22 connecting the annular part 21. The power connection part 22 extends in a direction away from the heating element 10. The annular part 21 forms an opening 201, and the power connection part 22 forms two branches and is respectively connected to the end parts of two opposite annular parts 21 at the opening 201. The induction element 20 is excited in the alternating magnetic field to generate an induced electric signal, and the annular part 21 forms an annular loop to enable the induced electric signal to flow and output in the form of an electric current. The two branches of the power connection part 22 are respectively connected to the positive and negative poles of the detection circuit, and the induced electric signal is output to the control circuit 70.

[0066] The annular part 21 can be a circular ring with an opening 201, and the center of the annular part 21 can be located on the central axis of the heating element 10.

[0067] In some other embodiments, the annular part 21 can also be arranged at a position close to the pin 11 in the axial direction of the heating element 10 or at any position between the two end parts of the heating element 10.

[0068] In some other embodiments, the induction element 20 can also be linear, square-ring-shaped, or other shapes that can form a loop, and the present application does not limit this.

[0069] Please refer to Figure 1 and Figure 4 In some embodiments, the heating assembly 100 includes a shielding device 40. The shielding device 40 covers the heating element 10 and the induction element 20, and the shielding device 40 is used to shield the alternating magnetic field.

[0070] In this way, by covering the heating element 10 and the sensing element 20 with the shielding device 40, the alternating magnetic field generated by the heating element 10 is shielded, thereby preventing the alternating magnetic field from interfering with the components outside the heating assembly 100.

[0071] Specifically, the shielding device 40 can be components such as a metal cover, a metal housing, a metal plate, etc.

[0072] Optionally, the heating assembly 100 further includes a heat reflection layer that covers the heating element 10 and is used to reflect the infrared rays emitted by the heating element 10 to the atomizing medium. The heat reflection layer can be compounded with the shielding device 40 to simplify the structure. Exemplarily, the shielding device 40 is a metal housing that covers the heating element 10 and the sensing element 20 and has the functions of infrared ray reflection and electromagnetic shielding. In this way, while reducing the number of components, the heat utilization rate is improved and electromagnetic interference is reduced.

[0073] Please refer to Figures 1 - 4 , in some embodiments, the heating element 10 extends spirally and is generally cylindrical. The shielding device 40 includes a shielding plate 41 and a shielding cover 42. The shielding cover 42 surrounds the heating element 10 and forms an opening 402 at the axial end. The shielding plate 41 covers the axial end of the shielding cover 42. The shielding cover 42 and the shielding plate 41 together form an electromagnetic region 401, and the electromagnetic region 401 is used to accommodate the heating element 10 and the sensing element 20 and limit the generation range of the alternating magnetic field.

[0074] In this way, by surrounding the heating element 10 with the shielding cover 42 and covering the shielding plate 41 at the axial end, an electromagnetic region 401 is formed, and the heating element 10 and the sensing element 20 are accommodated in the electromagnetic region 401, effectively limiting the magnetic field range formed after the heating element 10 is powered on and avoiding interference of the alternating magnetic field on other components.

[0075] Specifically, the shielding cover 42 can be formed by sequentially connecting plate-like structures on the outer periphery of the heating element 10 and surrounding the heating element 10. The shielding cover 42 can also be of other structures. The wall surface of the shielding cover 42 and the heating element 10 can be spaced apart by a certain distance in the radial direction. Taking the plane where the axial end of the shielding cover 42 is located as the reference plane, the projection range of the heating element 10 in the axial direction falls within the projection range of the shielding cover 42 in the axial direction.

[0076] Optionally, the shielding cover 42 and the shielding plate 41 are of a split structure and are connected by means such as snap connection, screw connection, riveting, etc. The shielding cover 42 and the shielding plate 41 can also be of an integral structure, thereby reducing the number of components and simplifying the structure of the heating assembly 100.

[0077] In one example, the shielding plate 41 includes a cover plate 411 covering the opening 402 of the shielding cover 42 and a support plate connected to the cover plate 411. The support plate includes a first support plate 412 abutting against the accommodating member 30 and a second support plate 413 fastened to the shielding cover 42. The cover plate 411 is formed with a loading hole, and the end of the accommodating member 30 and the pin 11 of the heating element 10 pass through the loading hole. The accommodating member 30 is a hollow cylinder, the loading hole can be a circular hole and is located at the geometric center of the cover plate 411, and can be concentric with the cross-sectional circle of the accommodating member 30. The first support plate 412 is connected at the loading hole, and the first support plate 412 extends along the axial direction of the accommodating member 30 from one side surface of the cover plate 411, surrounds the axial end of the accommodating member 30 and is hermetically connected to the accommodating member 30. The second support plate 413 is connected to the side surface of the cover plate 411 opposite to the first support plate 412 and fits against the outer wall surface of the shielding cover 42.

[0078] Two shielding plates 41 are respectively sleeved on the upper and lower ends of the accommodating member 30. The two axial ends of the shielding cover 42 are respectively engaged with the second support plates 413 at the upper and lower ends. The two first support plates 412 are respectively hermetically connected to the upper and lower ends of the accommodating member 30. The outer wall surface of the accommodating member 30, the first support plate 412, the cover plate 411 and the shielding cover 42 jointly define an electromagnetic region 401. The heating element 10 is sleeved on the accommodating member 30 and is located within the electromagnetic region 401. The pins 11 are connected to the two axial ends of the heating element 10 and extend out of the electromagnetic region 401 through the loading hole. The inductive element is sleeved on the heating element 10 and is located within the electromagnetic region 401. The power connection part 22 of the inductive element penetrates through the shielding cover 42 to connect to the control circuit 70 outside the electromagnetic region 401. When the heating element 10 is powered on, an alternating magnetic field is formed in the outer layer of the heating element 10. The magnetic lines of force are difficult to penetrate through the shielding cover 42 and the shielding plate 41, so that the range of the alternating magnetic field is limited within the electromagnetic region 401.

[0079] The cross-sectional shape of the shielding cover 42 can be circular, oval, triangular, quadrilateral, pentagonal, hexagonal, other polygons, or can also be rhombus, star-shaped, racetrack-shaped, olive-shaped or other irregular shapes. The present application does not limit this. At least one of the two axial ends of the shielding cover 42 is open, and the shielding plate 41 covers the open end of the shielding cover 42. The cross-sectional shape of the shielding plate 41 can be circular, oval, triangular, quadrilateral, polygonal, rhombus, star-shaped, racetrack-shaped, olive-shaped or other irregular shapes. For the convenience of assembly, the cross-sectional shape of the shielding plate 41 can be respectively matched with the cross-sectional shapes of the shielding cover 42 and the accommodating member 30. Exemplarily, referring to Figure 2 , the cross-sectional shape of the shielding cover 42 is pentagonal, the shape of the cover plate 411 of the shielding plate 41 and the cross-sectional shape at the second support plate 413 are pentagons the same as those of the shielding cover 42, and the cross-sectional shape of the shielding plate 41 at the first support plate 412 is circular the same as that of the accommodating tube.

[0080] Please refer to Figure 3 , in some embodiments, the heating element 10 includes a sealing device 50, and the sealing device 50 sealingly connects the axial end of the heating element 10 to the shielding device 40.

[0081] In this way, by sealingly connecting the axial end of the heating element 10 to the shielding device 40 through the sealing device 50, the gap between the two axial ends of the heating element 10 and the shielding device 40 is sealed, preventing the aerosol formed by atomization from entering the shielding device 40 and causing pollution.

[0082] Specifically, the sealing device 50 may include components such as a sealing block, a sealing ring, and a gasket. Exemplarily, the sealing device 50 includes a sealing rubber ring 51, and the sealing rubber ring 51 is disposed between the first support plate 412 and the accommodating member 30 and connects to the axial end of the heating element 10. The sealing rubber ring 51 has a certain elasticity and presses against the inner surface of the first support plate 412 and the outer wall surface of the accommodating member 30. The pin 11 of the heating element 10 can pass through the sealing rubber ring 51, or between the sealing rubber ring 51 and the first support plate 412, or between the sealing rubber ring 51 and the accommodating member 30, and is pressed by the sealing rubber ring 51 to minimize the assembly gap and achieve sealing.

[0083] Optionally, the number of the sealing rubber rings 51 is two, and the two sealing rubber rings 51 are respectively disposed at the upper and lower ends of the heating element 10 in the axial direction.

[0084] Please continue to refer to Figure 3 , in some embodiments, the heating assembly 100 includes a power source 60 and a control circuit 70 electrically connected to the power source 60. The power source 60 is used to supply power to the heating element 10, and the control circuit 70 is electrically connected to the sensing element 20. The control circuit 70 is used to receive the sensed electrical signal and control the output power of the power source 60 according to the sensed electrical signal.

[0085] In this way, by electrically connecting the control circuit 70 to the sensing element 20, the sensing element 20 can transmit the sensed electrical signal to the control circuit 70 to achieve accurate temperature feedback. Thus, the control circuit 70 obtains the real-time data of the temperature field and controls the output of the power source 60 according to the real-time temperature, adjusts the heating temperature within a reasonable range, realizes accurate and timely temperature control, and reduces problems such as overheating and charring.

[0086] Specifically, the control circuit 70 is electrically connected to the sensing element 20. The sensed electrical signal is input into the control circuit 70 in the form of current. The control circuit 70 can convert the electrical signal into a digital signal to obtain the real-time temperature of the heating element 10. When the real-time temperature of the heating element 10 exceeds the reasonable heating temperature range, the control circuit 70 controls the output power of the power supply 60 to increase or decrease, adjusts the heating power of the heating element 10, and thus realizes cooling or heating, avoiding insufficient heating or overheating and charring of the atomization medium. The above temperature measurement and control processes are all signal-fed back through electrical connections, with good timeliness and accuracy.

[0087] In some examples, when the heating element 10 is energized to form a special circuit, it can be equivalent to an inductor and a resistor connected in series. The heating element 10 is then connected in series or in parallel with the capacitor C to form a resonant circuit, so that a resonant current flows through the heating element 10 and generates an alternating magnetic field. The heating element 10 uses the Joule heat in the resonant circuit, the heat generated by the heating element 10 due to electromagnetic induction, and the heat generated when the heating element 10 is magnetized for heating.

[0088] As Figure 3 shown, the heating element 10 and the capacitor C are connected in parallel, and the heating element 10 and the capacitor C are together connected to the two output terminals of the power supply 60. The power connection part 22 of the sensing element 20 forms two branches and is respectively connected to two input terminals with a potential difference in the control circuit 70.

[0089] The aerosol generating device (not shown in the figure) of the embodiment of the present application includes the heating assembly 100 of any of the above embodiments.

[0090] The aerosol generating device of the embodiment of the present application includes the heating assembly 100 of the above embodiment. Therefore, the aerosol generating device has all the beneficial effects of the heating assembly 100.

[0091] The aerosol generating device further includes a housing for supporting and protecting the heating element 10. A mouthpiece can be provided on the housing, and the mouthpiece is internally connected to the accommodating member 30 for the user to inhale the aerosol formed by the atomization medium being heated through the mouthpiece.

[0092] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "certain embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0093] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A heating component, characterized in that: include: A heating element, at least a portion of which is in a spiral shape and is conductive, and when the heating element is powered on, it generates an alternating magnetic field and heat for heating the atomized medium; and The inductive element is arranged in the alternating magnetic field and is excited to generate an induced electrical signal.

2. The heating component according to claim 1, characterized in that: The heating component comprises a receiving part, the receiving part forms a receiving space, the receiving space is used to receive the atomized medium, and the heating element is sleeved outside the receiving part.

3. The heating component according to claim 2, characterized in that: The accommodating part is a high temperature resistant insulating tube.

4. The heating component according to claim 2, characterized in that: The induction element is sleeved outside the heating element.

5. The heating component according to claim 4, characterized in that: The heating element is spirally extended and roughly cylindrical, and the sensing element is in an open ring shape and is sleeved on the middle position of the heating element along the axial direction.

6. The heating component according to claim 1, characterized in that: The heating component comprises a shielding device, which is arranged outside the heating element and the induction element, and is used to shield the alternating magnetic field.

7. The heating component according to claim 6, characterized in that: The heating element extends spirally and is roughly cylindrical. The shielding device includes a shielding plate and a shielding cover. The shielding cover surrounds the heating element and forms an opening at the axial end. The shielding plate covers the axial end of the shielding cover. The shielding plate and the shielding cover together form an electromagnetic interval. The electromagnetic interval is used to accommodate the heating element and the induction element and limit the generation range of the alternating magnetic field.

8. The heating component according to claim 6, characterized in that: The heating element comprises a sealing device, and the sealing device seals and connects the axial end of the heating element with the shielding device.

9. The heating component according to claim 1, characterized in that: The heating component includes a power supply and a control circuit electrically connected to the power supply, the power supply is used to supply power to the heating element, the control circuit is electrically connected to the sensing element, and the control circuit is used to receive the sensing electrical signal and control the output power of the power supply according to the sensing electrical signal.

10. An aerosol generating device, characterized in that: The aerosol generating device comprises the heating component according to any one of claims 1-9.

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