Heating assembly and aerosol generating device

Abstract

The invention relates to a heating assembly and an aerosol generating device. The heating assembly comprises at least two heating pieces, a heating space used for heating the card type medium is formed between the at least two heating pieces, and at least two heating circuits are arranged on each heating piece in parallel. The aerosol generating device comprises a shell and a heating assembly arranged in the shell. According to the invention, the at least two heating elements are used for heating in different areas, so that the local energy of the card type medium is more concentrated, the preheating time is shortened, the card type medium can be more uniformly and fully heated, the consistency of aerosol suction is better, and the utilization rate of the medium is improved.

Description

Technical Field

[0001] This invention relates to the field of atomization technology, and more specifically, to a heating element and an aerosol generating device. Background Technology

[0002] Aerosol-generating products are produced by heating aerosol-generating devices at low temperatures to release aerosol extracts without combustion. Traditional aerosol-generating products are mostly cylindrical, and the heating methods used typically include center plate heating, center needle heating, and peripheral heating tube heating. Among these, peripheral heating tube heating is often used in single-stage or dual-stage heating methods. For peripheral heating tube heating, the purpose of using a dual-stage heating method is to increase the baking range of the aerosol-generating medium and to bake it in stages, ensuring uniform aerosol release, ultimately resulting in increased vapor production and consistent aroma. However, traditional aerosol-generating devices using peripheral heating tubes still suffer from problems such as long preheating times, low medium utilization rates, and severe attenuation in the later stages, significantly impacting the user's vaping experience. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a heating component that can shorten the preheating time and improve the suction consistency, and an aerosol generating device having the heating component, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problem is: to construct a heating component, including at least two heating elements, wherein a heating space for heating the card-type medium is formed between the at least two heating elements.

[0005] In some embodiments, the cross-section of the heating space has a larger dimension in the width direction than in the thickness direction, and the at least two heating elements include a first heating element and a second heating element disposed opposite to each other in the thickness direction of the heating space.

[0006] In some embodiments, each of the heating elements is provided with at least two heating lines connected in parallel.

[0007] In some embodiments, the at least two heating circuits include a first heating circuit and a second heating circuit.

[0008] The heating component further includes a first lead-out electrode connected to one pole of the first heating circuit and the second heating circuit, a second lead-out electrode connected to the other pole of the first heating circuit, and a third lead-out electrode connected to the other pole of the second heating circuit.

[0009] In some embodiments, the at least two heating lines have the same or different line shapes.

[0010] In some embodiments, each of the heating elements is sheet-shaped and includes a heating body and an inlet portion located at one end of the heating body, the inlet portion being extended outward in a direction away from the heating body.

[0011] In some embodiments, the heating assembly further includes a support assembly having a receiving cavity with an opening at one end, and the at least two heating elements are disposed in the receiving cavity.

[0012] In some embodiments, a heat-insulating cavity is formed between each of the heating elements and the inner wall surface of the support assembly.

[0013] In some embodiments, the support assembly includes: a first support and a second support, respectively disposed on both sides in the thickness direction of the card-type medium; and a support base, disposed at the end of the receiving cavity away from the opening; and the at least two heating elements are both fixedly mounted on the support base.

[0014] The present invention also provides an aerosol generating apparatus, including a housing and a heating component as described in any of the preceding claims disposed in the housing.

[0015] Implementing the present invention has at least the following beneficial effects: The present invention uses at least two heating elements for zoned heating, which can make the local energy of the card-type medium more concentrated, shorten the preheating time, and achieve more uniform and sufficient heating of the card-type medium, resulting in better consistency of aerosol extraction and improved medium utilization. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the heating component containing the aerosol-generated product in some embodiments of the present invention;

[0018] Figure 2 yes Figure 1 The diagram shows the exploded structure of the heating element and the aerosol-generated product.

[0019] Figure 3 yes Figure 1 The diagram shows a longitudinal cross-sectional view of the heating element containing the aerosol-generated product.

[0020] Figure 4 yes Figure 2 A schematic diagram of the decomposition structure of products generated from aerosols;

[0021] Figure 5 yes Figure 4 A schematic diagram of the structure of a card-type medium;

[0022] Figure 6 yes Figure 2 Exploded view of the heating element;

[0023] Figure 7 yes Figure 6 A schematic diagram of the structure of the first heating element;

[0024] Figure 8 yes Figure 6 Schematic diagram of the structure of the second heating element;

[0025] Figure 9 This is a heating logic diagram of the first heating element and the second heating element being heated in separate zones in some embodiments of the present invention;

[0026] Figure 10 , Figure 11 The diagram shows a schematic representation of the heating element in some modified embodiments of the present invention;

[0027] Figure 12 This is a longitudinal cross-sectional structural diagram of the aerosol generating device in some embodiments of the present invention. Detailed Implementation

[0028] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments are now described in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the invention. However, the invention can be practiced in many ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, in this invention, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] Figures 1 to 3The diagram shows a schematic of the module structure of the heating element 20 and the aerosol generating article 10 in some embodiments of the present invention. The heating element 20 has a receiving cavity 230 for accommodating at least part of the aerosol generating article 10. The heating element 20 can perform low-temperature baking and heating on the aerosol generating article 10 contained in the receiving cavity 230 after being powered on, so as to release the aerosol extract in the aerosol generating article 10 in a non-combustible state.

[0031] like Figures 2 to 5 As shown, the module (including the heating element 20 and the aerosol generating article 10) is configured to have mutually perpendicular width direction X, thickness direction Y, and length direction Z. The aerosol generating article 10 is card-shaped and may include an outer wrapping element 11, a card-type medium 12, a support section 13, and a filter section 14. The card-type medium 12, support section 13, and filter section 14 are arranged sequentially in the length direction Z, and the outer wrapping element 11 covers at least a portion of the card-type medium 12, support section 13, and filter section 14.

[0032] The card-type medium 12 can be made from, but is not limited to, tobacco, tea, or other plant materials. The card-type medium 12 is generally card-shaped, with a flat, elongated cross-sectional shape; that is, the width W of the cross-section in the width direction X is greater than the thickness D in the thickness direction Y. In some embodiments, the width W of the card-type medium 12 can be 8mm to 14mm, for example, 9mm or 12mm; the thickness D of the card-type medium 12 can be 1.5mm to 3mm, for example, 2.5mm; and the length L of the card-type medium 12 in the length direction Z can be 14mm to 20mm, for example, 16mm or 18mm. The relatively small thickness D of the cross-section of the card-type medium 12 (not greater than 3mm) reduces the distance from the heating element to the center of the medium to less than 1.5mm during heating, which helps to shorten the heat transfer path, improve thermal efficiency, and shorten preheating time.

[0033] In one specific embodiment, the cross-sectional shape of the card-type medium 12 is approximately a racetrack circle, and the length, width, and thickness dimensions of the card-type medium 12 are 18mm*12mm*2.5mm or 16mm*9mm*2.5mm. In other embodiments, the cross-sectional shape of the card-type medium 12 may also be elliptical, rectangular, or other shapes.

[0034] Furthermore, the card-type medium 12 has a higher medium density than traditional media, thus producing a greater amount of vapor. Traditional media have a density of 0.3 g / mm³. 3 ~0.5g / mm 3 The card-type medium 12 of the present invention has a media density of 0.8 g / mm². 3 ~1.5g / mm3 .

[0035] Correspondingly, if traditional cylindrical media are used to prepare card-type media, the compression of the micropores between the media due to the flattening of the circle leads to increased suction resistance and difficulty in suction, making it impossible to prepare card-type media through simple extrusion. In this embodiment, the card-type media 12 also has through-holes 120 formed, allowing the card-type media 12 to form an integrated structure with its own air channels by creating air holes in a dense medium. Specifically, the dense medium can be prepared using processes such as extrusion and upsetting, and the air holes 120 can be integrally formed with the dense medium or formed in subsequent processing. This integrated card-type media 12 with its own air channels has advantages such as low cost and high media utilization.

[0036] The shape of the pores 120 is not limited; for example, they can be various shapes such as round holes, square holes, and elliptical holes. The number of pores 120 can be one or more. Preferably, there are multiple pores 120, each pore 120 penetrating the card-type medium 12 along its length direction Z. The multiple pores 120 can be evenly spaced along the width direction and / or thickness direction of the card-type medium 12. Further, the multiple pores 120 can be distributed in one or more rows, with each row of pores extending along the width direction of the card-type medium 12, which is beneficial for fully carrying out the aerosol generated after atomization of the card-type medium 12.

[0037] The two outer surfaces 121 of the card-type medium 12, which are arranged opposite each other in the thickness direction Y, may also be recessed to form a plurality of grooves 122. The plurality of grooves 122 may be evenly spaced in the width direction X of the card-type medium 12 and may extend to both ends of the card-type medium 12 in the length direction Z. The grooves 122 can provide airflow and help reduce suction resistance.

[0038] The outer packaging 11 may include a thermally conductive film 111 wrapped around the card-type medium 12. The thermally conductive film 111 may be a thin metal film with a high thermal transfer coefficient, such as aluminum foil or tin foil. By directly wrapping the card-type medium 12 with the thermally conductive film 111, the high thermal conductivity of the thermally conductive film 111 is used to quickly transfer heat to the card-type medium 12, thereby achieving the effect of rapid smoke generation.

[0039] The support section 13 can be a hollow tube with a through hole 130 formed along its length. This through hole 130 allows airflow and also provides some cooling, reducing the temperature of the aerosol inhaled into the user's mouth. The material of the support section 13 includes, but is not limited to, paper, silicone, and plastic. Alternatively, in other embodiments, the support section 13 can be cylindrical with multiple through holes 130 formed therethrough.

[0040] The filter section 14 can be a porous structure made of polyester fiber or cellulose acetate, etc. In this embodiment, the shapes of the support section 13 and the filter section 14 are matched with the card-type medium 12, and the card-type medium 12, the support section 13, and the filter section 14 are arranged coaxially in sequence, so that the aerosol generating product 10 is generally flat and card-shaped. Of course, in other embodiments, the shapes of the support section 13 and / or the filter section 14 are not limited.

[0041] The outer packaging 11 may further include a packaging film 112 that wraps around at least a portion of the support section 13 and the filter section 14. The material of the packaging film 112 may include, but is not limited to, one or more of paper sheets, paper tubes, foil sheets, and foil tubes. In this embodiment, the outer packaging 11 completely wraps around the support section 13 and the filter section 14, and may also wrap around a portion of the upper end of the thermally conductive film 111. Of course, in other embodiments, the lower end face of the packaging film 112 may abut against or be spaced from the upper end face of the thermally conductive film 111, or the thermally conductive film 111 may wrap around a portion of the lower end of the packaging film 112.

[0042] The heating assembly 20 includes at least two heating elements disposed in the receiving cavity 230, forming a heating space 220 between the at least two heating elements for receiving and heating the card-type medium 12. The shape of the heating space 220 matches the shape of the card-type medium 12, that is, the heating space 220 is flat, and its cross-section is larger in the width direction than in the thickness direction.

[0043] Specifically, in this embodiment, the heating assembly 20 includes a first heating element 21 and a second heating element 22 disposed opposite to each other in the thickness direction Y. Since the card-type medium 12 has a relatively small size in the thickness direction Y, disposing the first heating element 21 and the second heating element 22 on opposite sides of the card-type medium 12 in the thickness direction Y helps to shorten the heat transfer path and reduce preheating time. Furthermore, both the first heating element 21 and the second heating element 22 can be sheet-shaped heating elements. Further, the shape of the longitudinal section of the sheet-shaped heating element along the length direction Z matches the shape of the longitudinal section of the card-type medium 12 along the length direction Z, which is beneficial for fixing and heating the card-type medium 12. Of course, in other embodiments, the number and shape of the heating elements in the heating assembly 20 are not limited; for example, the number of heating elements can be three or more.

[0044] When the card-type medium 12 is housed in the receiving cavity 230, the first heating element 21 and the second heating element 22 are at least partially in contact with the heat-conducting film 111, and the heat is quickly transferred to the card-type medium 12 through the high heat transfer performance of the heat-conducting film 111.

[0045] Due to the high density of the card-type medium 12, its elasticity is worse than that of ordinary media. When the aerosol generating product 10 is inserted into the receiving cavity 230, there may be contact gaps between it and the first heating element 21 and the second heating element 22, resulting in higher thermal resistance and poor heating effect. However, by directly wrapping the card-type medium 12 with a heat-conducting film 111, as long as there is a contact area between the first heating element 21 and the second heating element 22 and the heat-conducting film 111, the high heat transfer performance of the heat-conducting film 111 can be used to quickly transfer heat to other non-contact areas of the heat-conducting film 111 (the areas corresponding to the contact gaps). This solves the requirement of the card-type medium 12 for the flatness of the contact surface of the rigid (inelastic) heating element and achieves the effect of rapid smoke generation.

[0046] In addition, the multiple grooves 122 provided on the outer surface 121 of the card medium 12 make the outer surface 121 of the card medium 12 form a convex-concave structure. When the card medium 12 is heated by the heating element, this convex-concave structure also helps to solve the heat transfer problem caused by uneven contact.

[0047] In addition, the thermal contact problem between the card-type medium 12 and the first heating element 21 and the second heating element 22 can also be solved by other known technologies. For example, there can be two card-type media 12, with an elastic device sandwiched between the two card-type media 12, and the thermal contact problem can be solved by the elastic force of the elastic device.

[0048] The first heating element 21 and the second heating element 22 are also respectively provided with heating lines for generating heat after being energized. The number of heating lines is not limited and can be one, two or more. In some embodiments, the first heating element 21 and the second heating element 22 each include at least two heating lines, and the at least two heating lines on the first heating element 21 and the second heating element 22 are connected to the control circuit in parallel, thereby realizing time-sharing and area-sharing heating of the card-type medium 12, enabling more uniform and thorough heating of the card-type medium 12, resulting in better consistency of aerosol extraction and improved medium utilization.

[0049] Specifically, such as Figures 7 to 9As shown, the first heating element 21 includes heating lines 21a and 21d, which are vertically distributed along the length of the first heating element 21. The second heating element 22 includes heating lines 21b and 21c, which are vertically distributed along the length of the second heating element 22. Alternatively, in other embodiments, heating lines 21a and 21d may be arranged side-by-side along the width of the first heating element 21, and / or heating lines 21b and 21c may be arranged side-by-side along the width of the second heating element 22. Heating lines 21a, 21b, 21c, and 21d can be heated simultaneously or alternately at different times. This allows for simultaneous or time-sequential heating of four regions of the card-type medium 12, namely region 12a corresponding to heating line 21a, region 12b corresponding to heating line 21b, region 12c corresponding to heating line 21c, and region 12d corresponding to heating line 21d. By employing a zoned heating method, the local energy of the card-type medium 12 can be more concentrated, resulting in faster smoke initiation. Verification using the same medium showed that the smoke initiation time with the zoned heating method was 2 seconds, while the smoke initiation time with segmented heating using a circumferential heating element was 5 seconds.

[0050] For example, in one specific implementation, the activation sequence of the heating element can be as follows: S1, first activate heating circuit 21a to heat, which can concentrate energy to heat a small part and achieve the effect of rapid smoke generation; S2, after heating circuit 21a has been heated for a period of time (e.g., after 1 minute), activate heating circuit 21b, so that heating circuits 21a and 21b are heated simultaneously for a period of time (e.g., 1.5 minutes), which can increase the heating area and provide sufficient aerosol for subsequent suction; S3, then activate heating circuit 21c to heat for a period of time (e.g., 1.25 minutes); S4, finally activate heating circuit 21d to heat for a period of time (e.g., 1.25 minutes).

[0051] Of course, in actual implementation, the activation order of heating circuits 21a, 21b, 21c, and 21d can be arbitrarily set as needed. For example, heating circuits 21a, 21d, 21b, and 21c can be activated sequentially, or heating circuits 21d, 21a, 21b, and 21c can be activated sequentially. Considering that heating circuits 21a and 21b, located at the top, are closer to the mouthpiece, activating heating circuit 21a or 21b first during initial startup can achieve a better smoke generation effect.

[0052] Heating lines 21a, 21b, 21c, and 21d may have the same or different shapes. The structures of the first heating element 21 and the second heating element 22 may be the same or different. For ease of manufacturing, in this embodiment, the first heating element 21 and the second heating element 22 have the same structure and are symmetrically arranged with respect to the center line of the heating space 220. Heating lines 21a and 21d on the first heating element 21 have different shapes; correspondingly, heating lines 21b and 21c on the second heating element 22 also have different shapes.

[0053] Taking the first heating element 21 as an example, the two terminals of the heating line 21a are located at opposite ends of the width direction of the first heating element 21; one terminal of the heating line 21d is located at one end of the width direction of the first heating element 21, and the other terminal of the heating line 21d is located in the middle of the width direction of the first heating element 21. Thus, one terminal of the heating lines 21a and 21d can share a first lead-out electrode 211, while the other terminal is led out through a second lead-out electrode 212 and a third lead-out electrode 213, respectively, thereby reducing the number of lead-out electrodes required. Of course, in other embodiments, the heating lines 21a and 21d may not share a first lead-out electrode 211, but may be led out through two separate lead-out electrodes.

[0054] The forming method of the first heating element 21 and the second heating element 22 is not limited, and they can be formed by any known method. For example, the heating element can be formed by providing heating metal or heating film on the outer surface of the ceramic substrate, or by embedding heating metal inside the ceramic substrate. In addition, the first heating element 21 and the second heating element 22 can also be subjected to glazing treatment to form a glaze layer on the outer wall surface of the heating element, so as to enhance its strength and improve its surface smoothness.

[0055] In some embodiments, both the first heating element 21 and the second heating element 22 may include a heating body 214 and an inlet portion 215 located at the upper end of the heating body 214. The heating body 214 is a vertically arranged flat plate, which facilitates contact with the card-type medium 12. The inlet portion 215 gradually expands outward from the lower end to the upper end, which facilitates the smooth insertion of the card-type medium 12 between the first heating element 21 and the second heating element 22 through the inlet portion 215.

[0056] Understandably, the shape and number of heating lines on the first heating element 21 and / or the second heating element 22 can be arbitrarily modified as needed. For example, such as Figure 10 , Figure 11As shown, the first heating element 21 and / or the second heating element 22 may also be provided with three heating lines 21e, 21f, and 21g; for example Figure 10 As shown, the three heating circuits 21e, 21f, and 21g can be arranged side by side from top to bottom along the length of the heating element; or, as shown... Figure 11 As shown, a heating line 21e can also be provided on one side of the width direction of the heating element, and two heating lines 21f and 21g can be provided side by side vertically on the other side of the width direction of the heating element.

[0057] Furthermore, the shape, number, and arrangement of the heating lines on the first heating element 21 may be the same as or different from the shape, number, and arrangement of the heating lines on the second heating element 22. For example, the first heating element 21 may have one heating line, and the second heating element 22 may have two heating lines; or, for another example, the first heating element 21 may have three heating lines and employ... Figure 10 The arrangement shown indicates that the second heating element 22 has three heating lines and employs... Figure 11 The arrangement shown is as follows.

[0058] For example Figure 2 , Figure 3 , Figure 6 As shown, the heating component 20 also includes a support component 23, which is a flat elongated frame with an opening at the top, and defines a receiving cavity 230 with an opening at one end (shown as the top end in the figure).

[0059] In some embodiments, the support assembly 23 may include a first support 231, a second support 232, and a support base 233 that are assembled together. The first support 231, the second support 232, and the support base 233 may be molded separately and then assembled together. Of course, in other embodiments, the first support 231 and / or the second support 232 and / or the support base 233 may also be integrally molded. The materials of the first support 231, the second support 232, and the support base 233 are high-temperature resistant materials, such as high-temperature resistant plastics (e.g., PEEK, LCP, etc.) or inorganic high-temperature resistant materials (e.g., porous ceramics, zirconium oxide, etc.).

[0060] The first bracket 231 and the second bracket 232 are located on both sides of the card-type medium 12 in the thickness direction, and the first bracket 231 and the second bracket 232 are assembled together to define the receiving cavity 230. The first bracket 231 and the second bracket 232 can be fixed together by means of snap-fit ​​connection, screw connection, magnetic connection or other methods.

[0061] A support base 233 is disposed at the bottom of the receiving cavity 230 and can be completely contained within the receiving cavity 230. Of course, in other embodiments, the support base 233 may also be partially exposed outside the receiving cavity 230. After the card-type medium 12 is inserted into the receiving cavity 230, the bottom end face of the card-type medium 12 may abut against the support base 233 to define the position of the card-type medium 12 in the receiving cavity 230.

[0062] The lower ends of both the first heating element 21 and the second heating element 22 can be supported and mounted on the support base 233. In some embodiments, the lower ends of the first heating element 21 and the second heating element 22 are each formed with at least one slot 216, and the thickness sides of the support base 233 are each formed with at least one locking platform 2332 that engages with the at least one slot 216, so that the first heating element 21 and the second heating element 22 can be locked and fixed on the support base 233, making installation convenient and the fixation reliable. In this embodiment, the first heating element 21 and the second heating element 22 are each formed with two slots 216, and correspondingly, the thickness sides of the support base 233 are also formed with two locking platforms 2332, improving the reliability of the fixation.

[0063] In some embodiments, the support base 233 may include a main body 2331, two limiting portions 2333 located at both ends of the main body 2331 in the width direction, and a locking platform 2332 protruding outward from both sides of the main body 2331 in the thickness direction. The width of the main body 2331 is smaller than the width of the limiting portions 2333. The two sides of the limiting portions 2333 abut against the inner wall surfaces of the first bracket 231 and the second bracket 232, respectively, to achieve the installation and positioning of the limiting portions 2333.

[0064] After the first heating element 21 and the second heating element 22 are mounted on the mounting platform 2332 of the support base 233, a first heat insulation cavity 2310 is formed between the first heating element 21 and the inner wall surface of the first bracket 231, and a second heat insulation cavity 2320 is formed between the second heating element 22 and the inner wall surface of the second bracket 232, which is beneficial to the heat insulation between the first heating element 21 and the first bracket 231 and between the second heating element 22 and the second bracket 232.

[0065] In some embodiments, the upper end of the first bracket 231 may protrude inward to form a first flange 2311, and the upper end of the second bracket 232 may protrude inward to form a second flange 2321, which can prevent the first heating element 21 and the second heating element 22 from falling out of the receiving cavity 230.

[0066] Figure 12An aerosol generating apparatus 50 according to some embodiments of the present invention is shown, which may include a housing 30 and a heating element 20 disposed within the housing 30. The housing 30 may include a cylindrical shell 31 and a suction nozzle 32 disposed at the upper end of the cylindrical shell 31. When the aerosol generating article 10 is housed in the aerosol generating apparatus 50, the filter section 14 may be completely housed within the aerosol generating apparatus 50. Specifically, the filter section 14 is at least partially housed within the suction nozzle 32, and the porous structure on the filter section 14 is connected to the suction nozzle 32, allowing suction through the suction nozzle 32 on the aerosol generating apparatus 50. Of course, in other embodiments, the filter section 14 may also be exposed outside the aerosol generating apparatus 50 for direct user suction.

[0067] In some embodiments, the nozzle 32 can be detachably mounted on the upper end of the cylindrical housing 31 via a snap-fit ​​connection, magnetic connection, or other means. This allows for easy removal of the aerosol generating product 10 after heating by detaching the nozzle 32 from the cylindrical housing 31 and replacing it with a new one for continued use. Alternatively, in other embodiments, the nozzle 32 can be connected to the cylindrical housing 31 via a sliding or rotating connection, also enabling the replacement and reuse of the aerosol generating product 10.

[0068] In some embodiments, the aerosol generating device 50 may further include a heat insulation member 40 disposed between the cylindrical housing 31 and the heating component 20. The heat insulation member 40 may have one or more layers, which can further reduce the heat transferred from the heating component to the cylindrical housing 31, and prevent the cylindrical housing 31 from becoming too hot and affecting the user experience. It is understood that the material and form of the heat insulation member 40 are not limited. For example, the heat insulation member 40 may be one or more layers of aerogel; or, the heat insulation member 40 may also be an air insulation structure.

[0069] Understandably, the above-mentioned technical features can be used in any combination without restriction.

[0070] The above embodiments merely illustrate specific implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of the present invention, and can also make several modifications and improvements, all of which fall within the protection scope of the present invention. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A heating element for heating a card-type medium, characterized in that, include: At least two heating elements, A heating space for heating the card-type medium is formed between the at least two heating elements.

2. The heating component according to claim 1, characterized in that, The cross-sectional dimension of the heating space is larger in the width direction than in the thickness direction. The at least two heating elements include a first heating element and a second heating element disposed opposite to each other in the thickness direction of the heating space.

3. The heating component according to claim 1, characterized in that, Each of the heating elements has at least two heating circuits connected in parallel.

4. The heating component according to claim 3, characterized in that, The at least two heating circuits include a first heating circuit and a second heating circuit. The heating component further includes a first lead-out electrode connected to one pole of the first heating circuit and the second heating circuit, a second lead-out electrode connected to the other pole of the first heating circuit, and a third lead-out electrode connected to the other pole of the second heating circuit.

5. The heating component according to claim 3, characterized in that, The at least two heating circuits have the same or different circuit shapes.

6. The heating component according to claim 1, characterized in that, Each of the heating elements is sheet-shaped and includes a heating body and an inlet portion located at one end of the heating body, the inlet portion being spread outward in a direction away from the heating body.

7. The heating component according to any one of claims 1-6, characterized in that, The heating element further includes a support assembly, which has a receiving cavity with an opening at one end, and the at least two heating elements are disposed in the receiving cavity.

8. The heating element according to claim 7, characterized in that, A heat-insulating cavity is formed between each of the heating elements and the inner wall surface of the support assembly.

9. The heating component according to claim 7, characterized in that, The support assembly includes: The first support and the second support are respectively disposed on both sides of the card-type medium in the thickness direction; and A support base is disposed at the end of the receiving cavity away from the opening; The at least two heating elements are all fixedly mounted on the support base.

10. An aerosol generating device, characterized in that, include: shell; as well as The heating element as described in any one of claims 1-9 is disposed in the housing.

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