Heating element of heating non-combustible device and heating non-combustible device

Abstract

This application relates to the field of aerosol generation equipment technology, specifically to a heating element and a heating-non-combustible device. The heating element includes: a ceramic substrate having a heating channel for accommodating at least a portion of an aerosol product; a heating element, an insert injection-molded into the ceramic substrate, configured as a meandering structure surrounding the heating channel; and at least two electrical connection portions electrically connected to the heating element, at least partially exposed outside the ceramic substrate, for electrical connection to a power supply component to enable the heating element to generate heat. Because the heating element is injection-molded into the ceramic substrate, it helps to firmly bond the heating element and the ceramic substrate, resulting in strong structural stability and resistance to damage. Furthermore, the meandering structure of the heating element helps to increase the contact area with the ceramic substrate, further enhancing structural stability.

Description

Technical Field

[0001] This application relates to the field of aerosol generation equipment technology, specifically to a heating element and a heating non-combustible device. Background Technology

[0002] A heated non-combustible device is an aerosol generating device that heats aerosol products to produce aerosols in a non-combustible state. The heating element structure varies among different types of heated non-combustible devices. One common type uses a thick-film printing process to form a thick heating layer on a substrate, which heats the aerosol product. Another type uses an assembly method to mount heating elements such as heating wires, heating plates, and heating needles onto a substrate, which then heats the aerosol product.

[0003] Both of the aforementioned heating elements suffer from poor structural stability and are prone to damage at high temperatures. Utility Model Content

[0004] In order to improve the problem of poor structural stability of the heating element and reduce the risk of damage to the heating element in high-temperature environments, this application provides a heating element and a heating non-combustible device.

[0005] According to a first aspect, one embodiment provides a heating element for a non-combustible heating device, comprising:

[0006] A ceramic matrix having heating channels for accommodating at least a portion of an aerosol product;

[0007] The heating element, an insert, is injection molded into the ceramic matrix and configured as a meandering structure surrounding the heating channel;

[0008] And at least two electrical connection portions electrically connected to the heating element, at least a portion of which is exposed outside the ceramic substrate for electrical connection to a power supply assembly to enable the heating element to generate heat.

[0009] In one embodiment, the heating element includes a plurality of heating segments connected in sequence, with a spacing between adjacent heating segments;

[0010] The spacing between each of the heating segments is equal to form an equidistant, meandering structure; or, the spacing between at least two adjacent heating segments has a difference to form a variable-spacing, meandering structure.

[0011] In one embodiment, the heating element is arranged spirally along the axial direction of the heating channel; or, the heating element is arranged serpentinely along the circumferential direction of the heating channel.

[0012] In one embodiment, the heating element includes at least a first heating part and a second heating part;

[0013] The electrical connection portion includes a first electrical connection portion, a second electrical connection portion, and a third electrical connection portion. The first electrical connection portion is connected to the side of the first heating portion away from the second heating portion, and the third electrical connection portion is connected to the side of the second heating portion away from the first heating portion. The side of the first heating portion close to the second heating portion and the side of the second heating portion close to the first heating portion are both connected to the second electrical connection portion.

[0014] The first electrical connection and the second electrical connection constitute a first power-on circuit for supplying power to the first heating element; the third electrical connection and the second electrical connection constitute a second power-on circuit for supplying power to the second heating element.

[0015] In one embodiment, the heating element further includes a connecting portion connecting the first heating part and the second heating part. The heating element is spirally arranged along the axial direction of the heating channel. The heating element has multiple spiral segments in the axial direction. The pitch between any two adjacent spiral segments of the connecting portion is less than the pitch between any two adjacent spiral segments of the first heating part and the second heating part.

[0016] In one embodiment, the pitch between any two adjacent spiral segments of the first heating element is equal, and the pitch between any two adjacent spiral segments of the second heating element is equal.

[0017] In one embodiment, the heating element is spirally arranged along the axial direction of the heating channel, and the first heating part and the second heating part are separately disposed;

[0018] The ceramic substrate includes a first region for arranging the first heating element and a second region for arranging the second heating element. The first region and the second region are arranged along the axial direction of the ceramic substrate and have an overlapping region. The portions of the first heating element and the second heating element located within the overlapping region are jointly connected to the second electrical connection portion.

[0019] In one embodiment, both the first heating element and the second heating element have multiple spiral segments in the axial direction;

[0020] The first heating element includes a first part and a second part along the axial direction. The first part is located on the side of the second part away from the second heating element. The pitch between any two adjacent helical segments of the first part is smaller than the pitch between any two adjacent helical segments of the second part.

[0021] The second heating element includes a third part and a fourth part along the axial direction. The fourth part is located on the side of the third part away from the first heating element. The pitch between any two adjacent helical segments of the third part is greater than the pitch between any two adjacent helical segments of the second part.

[0022] The second part and the third part are at least partially interleaved.

[0023] In one embodiment, the pitch of the helical segment of the second portion gradually increases from the side closer to the first portion to the side farther away from the first portion;

[0024] The pitch of the helical segment in the third part gradually increases from the side closer to the fourth part to the side farther away from the fourth part.

[0025] In one embodiment, the system further includes a first temperature detection unit and a second temperature detection unit disposed on the ceramic substrate.

[0026] The first temperature detection unit is disposed adjacent to the first heating element and is configured to detect the heating temperature of the first heating element and issue a first control signal;

[0027] The second temperature detection unit is disposed adjacent to the second heating element and is configured to detect the heating temperature of the second heating element and issue a second control signal.

[0028] In one embodiment, the heating element is spirally arranged along the axial direction of the heating channel, and the heating element is configured as follows:

[0029] When a direct current is applied, the aerosol product placed in the heating channel is circumferentially heated by resistance heating.

[0030] When alternating current is applied, the aerosol product placed in the heating channel is circumferentially heated by resistance heating, and an alternating magnetic field is generated for induction heating of the aerosol product placed in the heating channel and adapted for induction heating.

[0031] In one embodiment, the distance between the heating element and the channel wall of the heating channel is smaller than the distance between the heating element and the outer surface of the ceramic substrate, so that the heating element is disposed in the ceramic substrate on the side close to the heating channel.

[0032] In one embodiment, the heating element has a protruding portion protruding from the channel wall of the heating channel, and the surface of the protruding portion includes a fixing surface for fitting with the outer peripheral surface of the aerosol product to fix the aerosol product.

[0033] In one embodiment, the protrusion is located on the side of the channel wall of the heating channel away from the channel opening.

[0034] In one embodiment, the heating element includes a heating wire with a circular or flat cross-sectional shape.

[0035] In one embodiment, the heating element is made of a temperature coefficient of resistance material, so that the resistivity of the heating element changes with temperature within a set operating temperature range.

[0036] In one embodiment, the heating element includes at least two sub-heating parts, and the at least two sub-heating parts are made of materials with different temperature coefficients of resistance.

[0037] In one embodiment, the electrical connection is fixed to the heating element and is injection molded together with the heating element into the ceramic matrix.

[0038] In one embodiment, the ceramic matrix is ​​made of dense ceramic to limit the penetration of the aerosol matrix.

[0039] According to a second aspect, one embodiment provides a heating non-combustible device, comprising:

[0040] Device casing;

[0041] The heating element as described in any of the above embodiments is disposed in the housing of the device;

[0042] And a power supply component, electrically connected to the electrical connection portion, for supplying power to the heating element.

[0043] According to the heating element in the above embodiment, since the heating element insert is injection molded into the ceramic matrix, it helps to firmly bond the heating element and the ceramic matrix, resulting in strong structural stability and resistance to damage. Furthermore, the heating element adopts a circuitous structure, which helps to increase the contact area with the ceramic matrix, thereby further enhancing structural stability.

[0044] The arrangement of heating elements around the heating channel also helps to fully heat the aerosol product from the circumference, thereby improving heating uniformity. Attached Figure Description

[0045] Figure 1 This is a three-dimensional structural schematic diagram of a heating element according to one embodiment;

[0046] Figure 2 A cross-sectional structural schematic diagram of a heating element according to one embodiment (I);

[0047] Figure 3 This is a schematic diagram of the structure of the heating element and electrical connection portion in a heating element according to one embodiment;

[0048] Figure 4A three-dimensional structural schematic diagram (II) of a heating element according to one embodiment;

[0049] Figure 5 for Figure 4 A schematic diagram of the internal structure of the heating element in the diagram;

[0050] Figure 6 for Figure 4 A schematic diagram of the heating element and electrical connection part of the heating element in the middle;

[0051] Figure 7 for Figure 6 Exploded view of the heating element;

[0052] Figure 8 A cross-sectional structural schematic diagram of a heating element according to one embodiment (III);

[0053] Figure 9 A three-dimensional structural schematic diagram of a heating element according to one embodiment (IV);

[0054] Figure 10 for Figure 9 Schematic diagram of the cross-sectional structure of the heating element;

[0055] Figure 11 A cross-sectional structural schematic diagram of a heating element according to one embodiment (V);

[0056] Figure 12 A cross-sectional structural schematic diagram of a heating element in one embodiment (VI);

[0057] Figure 13 This is a cross-sectional structural schematic diagram of a heating non-combustible device according to one embodiment.

[0058] In the diagram, 10 is the heating element;

[0059] 100. Ceramic substrate; 110. Heating channel; 120. First region; 130. Second region; 140. Overlapping region;

[0060] 200. Heating element; 201. Spiral segment; 210. First heating part; 211. First section; 212. Second section; 220. Second heating part; 221. Third section; 222. Fourth section; 230. Connecting part; 240. Protruding part; 241. Fixing surface;

[0061] 300, Electrical connection part; 310, First electrical connection part; 320, Second electrical connection part; 330, Third electrical connection part; 340, First energizing circuit; 350, Second energizing circuit;

[0062] 400. First temperature detection unit;

[0063] 500. Second temperature detection unit;

[0064] 60. Device housing; 61. Product insertion port; 62. Base; 621. Air inlet;

[0065] 70. Power supply components;

[0066] 80. Aerosol products; 81. Induction heating elements. Detailed Implementation

[0067] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0068] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0069] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0070] Common structural types of heating elements 10 in related technologies include: thick-film heating elements 10 in which a thick-film heating layer is formed on the substrate using a thick-film printing process, and assembled heating elements 10 in which heating elements such as heating wires, heating plates, and heating needles are assembled on the substrate. Due to the difference in the coefficients of thermal expansion between the substrate and the thick-film heating layer / heating element, the structural stability of the above two types of heating elements 10 is poor, and they are easily damaged in high-temperature environments.

[0071] In this embodiment of the application, by injection molding the heating element 200 insert into the ceramic substrate 100, the heating element 200 is tightly fixed in the ceramic substrate 100, and it is not easy to detach from the ceramic substrate 100 even in a high-temperature environment. Moreover, the heating element 200 can be protected by the ceramic substrate 100 and is not easily damaged during use.

[0072] An embodiment of the heating element in the heating non-combustible device of this application:

[0073] In one embodiment, please refer to Figures 1 to 12 The heating element 10 includes: a ceramic substrate 100, a heating element 200, and at least two electrical connection portions 300.

[0074] Please refer to Figure 1 and Figure 2 The ceramic substrate 100 can be understood as a heat-conducting structural component for transferring heat generated by the heating element 200 to the aerosol article 80. The ceramic substrate 100 has a heating channel 110 for accommodating at least a portion of the aerosol article 80, allowing the aerosol article 80 to be inserted into the ceramic substrate 100. Exemplarily, the ceramic substrate 100 may include a tubular structure, the inner cavity of which serves as the heating channel 110. In some embodiments, the ceramic substrate 100 may be made of dense ceramic with low porosity to limit the permeation of the aerosol matrix generated by heating the aerosol article 80; for example, the porosity of the ceramic substrate is less than 20%. The porosity of the ceramic matrix 100 can be adjusted through materials and manufacturing processes. Porosity directly affects the mechanical strength of the ceramic matrix 100. Lower porosity increases the density of the ceramic matrix 100, improving its mechanical strength and chemical inertness, making it less likely to react with other substances and preventing odors from being generated during heating by the heating element 10. Furthermore, low porosity reduces the permeability of the ceramic matrix 100, preventing leakage of condensed liquid substances from the aerosol generated during heating of the aerosol product 80. For example, the porosity of the ceramic matrix 100 can be 5%, 10%, or 15%. The material of the ceramic matrix 100 can specifically be silicon dioxide, zirconium oxide, or glass, etc. Of course, in other embodiments, other materials with higher thermal conductivity can be used instead of ceramic to make the matrix.

[0075] Please refer to Figure 2The heating element 200 is embedded within the ceramic substrate 100, allowing the ceramic substrate 100 to bond with the outer peripheral surface of the heating element 200. This provides fixation and protection for the heating element 200 through the ceramic substrate 100, enhancing the structural stability of the heating element 10 and making it less susceptible to damage during use. For example, the heating element 200 can be injection molded into the ceramic substrate 100 before the ceramic substrate 100 is formed, ensuring a tight bond between the outer peripheral surface of the heating element 200 and the ceramic substrate 100.

[0076] Please refer to Figure 2 The electrical connection portion 300 is electrically connected to the heating element 200, and at least a portion of the electrical connection portion 300 is exposed outside the ceramic substrate 100 to form a power-conducting circuit electrically connected to the power supply assembly 70, enabling the heating element 200 to generate heat. Exemplarily, the electrical connection portion 300 can be a lead wire. If the heating element 200 is completely embedded within the ceramic substrate 100, one end of the lead wire is inserted into the ceramic substrate 100 and electrically connected to the heating element 200; if the heating element 200 has a contact portion exposed outside the ceramic substrate 100, the lead wire can be completely located outside the ceramic substrate 100 to be electrically connected to the heating element 200 through the contact portion. In other embodiments not shown, the electrical connection portion 300 may also include an electrode pin or other conductive element, and the electrode pin may also be embedded in the ceramic substrate 100. In one embodiment, the electrical connection 300 can be fixedly connected to the heating element 200 by welding or other means, and then together with the heating element 200, it can be injection molded into the ceramic substrate 100 to protect the electrical connection 300 from corrosion by utilizing the ceramic substrate 100, which helps to extend the service life of the heating element.

[0077] In one embodiment, please refer to Figure 2 and Figure 3 The heating element 200 can be configured as a meandering structure around the heating channel 110, such as a spiral structure that meanders around the heating channel 110, or a serpentine structure (not shown in the figure) that meanders along the circumferential / axial direction of the heating channel 110. Using a meandering structure not only helps to increase the contact area between the heating element 200 and the ceramic substrate 100, thereby further improving the structural stability of the heating element 10, but also facilitates thorough heating of the aerosol product 80 from the circumferential direction, improving heating uniformity.

[0078] The heating element 200 with a meandering structure can be arranged in an equidistant meandering manner or a variable-pitch meandering manner as needed. For example, the heating element 200 may include multiple sequentially connected heating segments (such as the spiral segment 201 described below; that is, taking the spirally arranged heating element 200 as an example, each turn of the heating element 200 can be defined as a heating segment), and there is a spacing between adjacent heating segments (such as the pitch d between two adjacent spiral segments 201 described below); if the spacing between each heating segment is equal, an equidistant meandering structure can be formed, while if the spacing between at least two adjacent heating segments has a difference, a variable-pitch meandering structure can be formed (such as...). Figure 3 (As shown).

[0079] In one embodiment, please refer to Figure 2 and Figure 3 The heating element 200 may include at least a first heating portion 210 and a second heating portion 220 to form multiple heating portions that can be heated independently or in combination. For example, please refer to... Figure 3 The heating element 200 is configured with a spiral structure, including a first heating part 210 and a second heating part 220 along the axial direction. The electrical connection part 300 includes a first electrical connection part 310, a second electrical connection part 320, and a third electrical connection part 330. The first electrical connection part 310 is connected to the side of the first heating part 210 away from the second heating part 220, and the third electrical connection part 330 is connected to the side of the second heating part 220 away from the first heating part 210. The side of the first heating part 210 closest to the second heating part 220 and the side of the second heating part 220 closest to the first heating part 210 are both connected to the second electrical connection part 320. This allows the first electrical connection part 310 and the second electrical connection part 320 to form a first power circuit 340 for supplying power to the first heating part 210; the third electrical connection part 330 and the second electrical connection part 320 form a second power circuit 350 for supplying power to the second heating part 220. This allows for flexible control of the first heating part 210 and the second heating part 220 to heat up individually or together according to usage needs, improving heating flexibility.

[0080] In a further embodiment, please refer to Figure 2 and Figure 3 The heating element 200 may further include a connecting portion 230 connected between the first heating part 210 and the second heating part 220. The connecting portion 230 is connected to the second electrical connection portion 320, so that the first heating part 210 and the second heating part 220 are connected and connected to each other through the connecting portion 230. For example, the heating element 200 may be formed by spirally bending a heating wire. The two ends of the heating element 200 along the axial direction may serve as the first heating part 210 and the second heating part 220, respectively, while the middle portion serves as the connecting portion 230.

[0081] The heating element 200 has multiple spiral segments 201 in the axial direction. For example, each turn of the heating element 200 is defined as a spiral segment 201 (equivalent to the heating segment mentioned above), such that the projection of each "spiral segment 201" on the heating element 200 in the axial direction exactly forms a ring, and the distance between two adjacent spiral segments 201 is the pitch d (equivalent to the distance between adjacent heating segments mentioned above).

[0082] In one embodiment, please refer to Figure 3 The pitch d between any two adjacent spiral segments 201 of the connecting portion 230 is smaller than the pitch d between any two adjacent spiral segments 201 of the first heating portion 210 and the second heating portion 220, so that the first heating portion 210 and the second heating portion 220 serve as the main heating parts, while the connecting portion 230 mainly functions as a connection and conduction part. It can be understood that if the connecting portion 230 also serves as the main heating part, the area where the connecting portion 230 is located will accumulate heat transferred from the connecting portion 230, the first heating portion 210, and the second heating portion 220, which is prone to localized overheating. The design where the pitch d of the connecting portion 230 is smaller than that of the first heating portion 210 and the second heating portion 220 helps to reduce the risk of localized overheating.

[0083] In one embodiment, the pitch d between any two adjacent spiral segments 201 of the first heating element 210 is equal, and the pitch d between any two adjacent spiral segments 201 of the second heating element 220 is equal. This helps the first heating element 210 and the second heating element 220 to uniformly heat the corresponding areas of the aerosol product 80, thereby improving the user experience. It is understood that the pitch d between any two adjacent spiral segments 201 of the first heating element 210 and the pitch d between any two adjacent spiral segments 201 of the second heating element 220 can be equal to make the heating efficiencies of the first heating element 210 and the second heating element 220 equal or similar; alternatively, there can be a difference to allow for variations in the heating efficiencies of the first heating element 210 and the second heating element 220, thereby meeting differentiated heating requirements.

[0084] Of course, in other embodiments, the connecting part 230 can be omitted, and the first heating part 210 and the second heating part 220 can be directly connected to meet the requirements of zoned heating.

[0085] In another embodiment, please refer to Figures 4 to 6The first heating element 210 and the second heating element 220 are separately disposed. The ceramic substrate 100 includes a first region 120 for disposing of the first heating element 210 and a second region 130 for disposing of the second heating element 220. The first region 120 and the second region 130 are disposed along the axial direction of the ceramic substrate 100 and have an overlapping region 140. The portions of the first heating element 210 and the second heating element 220 located within the overlapping region 140 are jointly connected to the second electrical connection portion 320. That is, the overlapping region 140 can serve as a transition portion between the first heating element 210 and the second heating element 220. In the overlapping region 140, the first heating element 210 and the second heating element 220 can be staggered, thereby jointly heating the portion of the aerosol product 80 corresponding to the overlapping region 140, which helps to increase the heating area and enhance the heating uniformity.

[0086] In one embodiment, please refer to Figure 7 Both the first heating element 210 and the second heating element 220 have multiple spiral segments 201 in the axial direction. The first heating element 210 includes a first portion 211 and a second portion 212 along the axial direction. The first portion 211 is located on the side of the second portion 212 away from the second heating element 220. The pitch d between any two adjacent spiral segments 201 in the first portion 211 is smaller than the pitch d between any two adjacent spiral segments 201 in the second portion 212. The second heating element 220 includes a third portion 221 and a fourth portion 222 along the axial direction. The fourth portion 222 is located on the side of the third portion 221 away from the first heating element 210. The pitch d between any two adjacent spiral segments 201 in the third portion 221 is larger than the pitch d between any two adjacent spiral segments 201 in the second portion 212. At least some of the second portion 212 and the third portion 221 are staggered.

[0087] By reducing the pitch d of the helical segments 201 in the second part 212 and the third part 221, it is helpful to reduce the arrangement density of the helical segments 201 in the overlapping region 140, thereby avoiding the occurrence of overheating in the overlapping region 140.

[0088] In a further embodiment, please refer to Figure 7 The pitch d of the helical segment 201 in the second part 212 gradually increases from the side closer to the first part 211 to the side farther away from the first part 211; the pitch d of the helical segment 201 in the third part 221 gradually increases from the side closer to the fourth part 222 to the side farther away from the fourth part 222. This helps to keep the pitch d between each helical segment 201 in the overlapping region 140 and the pitch d between each helical segment 201 in the region adjacent to the overlapping region 140 at a similar level, avoiding the situation where the helical segments 201 in the overlapping region 140 are arranged too closely, and further reducing the risk of local overheating when the heating element 200 is heated.

[0089] In one embodiment, the heating element 200 is configured to: when a direct current is applied, circumferentially heat the aerosol product 80 placed in the heating channel 110 through resistance heating; and when an alternating current is applied, circumferentially heat the aerosol product 80 placed in the heating channel 110 through resistance heating, and generate an alternating magnetic field for induction heating of the aerosol product 80 placed in the heating channel 110 and adapted for induction heating. Here, "aerosol product 80 adapted for induction heating" can be understood as an aerosol product 80 internally equipped with an induction heating element 81 capable of generating heat when excited by the alternating magnetic field. In other words, by employing a spiral structure heating element 200, when an alternating current is applied, it can utilize its own resistance heating to circumferentially heat the aerosol product 80, and can also heat the interior of the aerosol product 80 through the alternating magnetic field, forming a composite heating method combining circumferential and central heating, thereby improving heating efficiency. For example, the heating element 200 can be made of ferromagnetic material, which can generate an alternating magnetic field when AC is applied, and can generate heat through resistance when AC or DC is applied.

[0090] In one embodiment, please refer to Figure 8 It also includes a first temperature detection unit 400 and a second temperature detection unit 500 disposed on the ceramic substrate 100; the first temperature detection unit 400 is disposed adjacent to the first heating part 210, for example, embedded in the ceramic substrate 100 and located between two adjacent spiral segments 201 of the first heating part 210, and is configured to detect the heating temperature of the first heating part 210 and issue a first control signal, which can be used to control the operating temperature of the first heating part 210; the second temperature detection unit 500 is disposed adjacent to the second heating part 220, for example, embedded in the ceramic substrate 100 and located between two adjacent spiral segments 201 of the second heating part 220, and is configured to detect the heating temperature of the second heating part 220 and issue a first control signal, which can be used to control the operating temperature of the second heating part 220.

[0091] By setting up a first temperature detection unit 400 and a second temperature detection unit 500, it is possible to achieve zoned temperature detection. Furthermore, the temperature curves of the first heating element 210 and the second heating element 220 can be controlled based on the detection results, achieving precise temperature control. The first temperature detection unit 400 and the second temperature detection unit 500 can be configured as thermocouples, thermistors, or other temperature sensors. Moreover, the first temperature detection unit 400 and the second temperature detection unit 500 can also be located on the surface of the ceramic substrate 100 or at other locations, as long as the design and usage requirements are met.

[0092] In some embodiments, please refer to Figure 8The distance between the heating element 200 and the channel wall of the heating channel 110 can be smaller than the distance between the heating element 200 and the outer surface of the ceramic substrate 100, so that the heating element 200 is disposed in the ceramic substrate 100 on the side close to the heating channel 110, in order to shorten the heat transfer path between the heating element 200 and the aerosol product 80, which helps to improve the heating efficiency.

[0093] In addition, in one embodiment, please refer to Figure 9 and Figure 10 The heating element 200 may also have a protruding portion 240 extending beyond the channel wall of the heating channel 110. The surface of the protruding portion 240 includes a fixing surface 241, which is used to fit against the outer peripheral surface of the aerosol article 80 to fix the aerosol article 80. The protruding portion 240 can replace the components used to fix the aerosol article 80 in the heated non-combustible device, which helps to reduce the number of components and lower production costs.

[0094] In one embodiment, the protrusion 240 may be located on the side of the channel wall of the heating channel 110 away from the channel opening, for example, in the middle section of the channel wall of the heating channel 110 along the axial direction, so as not to interfere with the insertion of the aerosol product 80 into the heating channel 110.

[0095] In another embodiment, please refer to Figure 11 Alternatively, a heating element 200 can be provided on one side of the ceramic substrate 100 near the heating channel 110 and on the other side away from the heating channel 110. For example, the heating element 200 includes two nested spiral heating wires, one inside near the heating channel 110 and the other outside near the outer surface of the ceramic substrate 100. The combination of the two helps to improve heating efficiency.

[0096] It should also be noted that the heating element 200 in the above embodiments can all be made of heating wire. The cross-sectional shape of the heating wire can be as follows: Figure 10 The circle shown can also be as follows: Figure 12 The flat shape shown is an example of a shape with a major and minor axis, such as a rectangle or an ellipse. It can also be understood as a shape such as a triangle or a regular polygon.

[0097] In some embodiments, the heating element 200 may be made of a temperature coefficient of resistance (TCR) material, so that the resistivity of the heating element 200 changes with temperature within a set operating temperature range. For example, by using a temperature coefficient of resistance material, the resistivity of the heating element 200 at 100°C is 2 to 10 times that at 20°C. Exemplarily, the material of the heating element 200 may include nickel-chromium alloy Ni50, nickel-chromium-aluminum alloy, and titanium, etc.

[0098] In some further embodiments, the heating element 200 may include at least two sub-heating parts, wherein at least two sub-heating parts (e.g., the first heating part 210 and the second heating part 220) are made of materials with different temperature coefficients of resistance, such as titanium and nickel-chromium-aluminum alloy respectively, so that the heating element 200 has different temperature coefficients of resistance, such as the first heating part 210 and the second heating part 220 having different operating temperatures when they are working, thereby realizing a segmented heating mechanism.

[0099] Examples of the heating non-combustion device in this application:

[0100] In one embodiment, please refer to Figure 13 The heated non-combustible device includes: a device housing 60, a heating element 10, and a power supply component 70. The heating element 10 includes the heating element 10 in any of the above embodiments, and the heating element 10 is disposed in the device housing 60. The power supply component 70 is electrically connected to the electrical connection portion 300 in the heating element 10 and is used to supply power to the heating element 10. The power supply component 70 may also be disposed in the device housing 60.

[0101] For example, the heating element 10 is fixedly disposed in the device housing 60. The device housing 60 may be provided with a product insertion port 61 corresponding to the heating channel 110, so that the aerosol product 80 can be inserted into the heating channel 110. A base 62 is provided on the side of the heating element 10 away from the product insertion port 61. The heating element 10 is mounted on the base 62, and the aerosol product 80 can be limited and supported by the base 62 after passing through the heating channel 110. An air inlet 621 may be provided on the base 62 so that airflow can enter the interior of the aerosol product 80 through the base 62.

[0102] The power supply component 70 can be understood as a collection of related components such as circuit boards and battery cells. It is mainly used to support the realization of all or part of the functions of the heating non-combustible device, such as controlling the heating element 10 to start and stop heating the aerosol product 80, adjusting the heating power of the heating element 200, and displaying the status information of the heating non-combustible device.

[0103] In some embodiments, the power supply component 70 may be configured to provide direct current and / or alternating current to the heating element 200. For example, the power supply component 70 includes a battery cell and an inverter circuit, which can convert the direct current output by the battery cell into alternating current to support the AC power supply mode of the power supply component 70.

[0104] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A heating element for a non-combustible heating device, characterized in that, include: A ceramic matrix having heating channels for accommodating at least a portion of an aerosol product; The heating element, an insert, is injection molded into the ceramic matrix and configured as a meandering structure surrounding the heating channel; And at least two electrical connection portions electrically connected to the heating element, at least a portion of which is exposed outside the ceramic substrate for electrical connection to a power supply assembly to enable the heating element to generate heat.

2. The heating element as described in claim 1, characterized in that, The heating element includes multiple heating segments connected in sequence, with a spacing between adjacent heating segments; The spacing between each of the heating segments is equal to form the equidistant, meandering structure; Alternatively, the spacing between at least two adjacent heating sections has a difference to form the meandering structure with a variable spacing arrangement.

3. The heating element as described in claim 1, characterized in that, The heating element is arranged spirally along the axial direction of the heating channel; or, the heating element is arranged serpentinely along the circumferential direction of the heating channel.

4. The heating element as described in claim 1, characterized in that, The heating element includes at least a first heating part and a second heating part; The electrical connection portion includes a first electrical connection portion, a second electrical connection portion, and a third electrical connection portion. The first electrical connection portion is connected to the side of the first heating portion away from the second heating portion, and the third electrical connection portion is connected to the side of the second heating portion away from the first heating portion. The side of the first heating portion close to the second heating portion and the side of the second heating portion close to the first heating portion are both connected to the second electrical connection portion. The first electrical connection and the second electrical connection constitute a first power-on circuit for supplying power to the first heating element; the third electrical connection and the second electrical connection constitute a second power-on circuit for supplying power to the second heating element.

5. The heating element as described in claim 4, characterized in that, The heating element further includes a connecting portion connecting the first heating part and the second heating part. The heating element is spirally arranged along the axial direction of the heating channel. The heating element has multiple spiral segments in the axial direction. The pitch between any two adjacent spiral segments of the connecting portion is less than the pitch between any two adjacent spiral segments of the first heating part and the second heating part.

6. The heating element as described in claim 5, characterized in that, The pitch between any two adjacent spiral segments of the first heating element is equal, and the pitch between any two adjacent spiral segments of the second heating element is equal.

7. The heating element as described in claim 4, characterized in that, The heating element is spirally arranged along the axial direction of the heating channel, and the first heating part and the second heating part are separately disposed; The ceramic substrate includes a first region for arranging the first heating element and a second region for arranging the second heating element. The first region and the second region are arranged along the axial direction of the ceramic substrate and have an overlapping region. The portions of the first heating element and the second heating element located within the overlapping region are jointly connected to the second electrical connection portion.

8. The heating element as described in claim 7, characterized in that, Both the first heating element and the second heating element have multiple spiral segments in the axial direction; The first heating element includes a first part and a second part along the axial direction. The first part is located on the side of the second part away from the second heating element. The pitch between any two adjacent helical segments of the first part is smaller than the pitch between any two adjacent helical segments of the second part. The second heating element includes a third part and a fourth part along the axial direction. The fourth part is located on the side of the third part away from the first heating element. The pitch between any two adjacent helical segments of the third part is greater than the pitch between any two adjacent helical segments of the second part. The second part and the third part are at least partially interleaved.

9. The heating element as described in claim 8, characterized in that, The pitch of the helical segment in the second part gradually increases from the side closer to the first part to the side farther away from the first part; and / or The pitch of the helical segment in the third part gradually increases from the side closer to the fourth part to the side farther away from the fourth part.

10. The heating element as described in any one of claims 4 to 9, characterized in that, It also includes a first temperature detection unit and a second temperature detection unit disposed on the ceramic substrate; The first temperature detection unit is disposed adjacent to the first heating element and is configured to detect the heating temperature of the first heating element and issue a first control signal; The second temperature detection unit is disposed adjacent to the second heating element and is configured to detect the heating temperature of the second heating element and issue a second control signal.

11. The heating element according to any one of claims 1 to 9, characterized in that, The heating element is spirally arranged along the axial direction of the heating channel, and the heating element is configured as follows: When a direct current is applied, the aerosol product placed in the heating channel is circumferentially heated by resistance heating. When alternating current is applied, the aerosol product placed in the heating channel is circumferentially heated by resistance heating, and an alternating magnetic field is generated for induction heating of the aerosol product placed in the heating channel and adapted for induction heating.

12. The heating element according to any one of claims 1 to 9, characterized in that, The distance between the heating element and the channel wall of the heating channel is smaller than the distance between the heating element and the outer surface of the ceramic substrate, so that the heating element is located on the side of the ceramic substrate closer to the heating channel.

13. The heating element as described in any one of claims 1 to 9, characterized in that, The heating element has a protruding portion that protrudes from the channel wall of the heating channel, and the surface of the protruding portion includes a fixing surface, which is used to fit against the outer peripheral surface of the aerosol product to fix the aerosol product.

14. The heating element as described in claim 13, characterized in that, The protruding portion is located on the side of the channel wall of the heating channel away from the channel opening.

15. The heating element as described in any one of claims 1 to 9, characterized in that, The heating element includes a heating wire with a circular or flat cross-sectional shape.

16. The heating element according to any one of claims 1 to 9, characterized in that, The heating element is made of a temperature coefficient of resistance material, so that the resistivity of the heating element changes with temperature within a set operating temperature range.

17. The heating element as claimed in claim 16, characterized in that, The heating element includes at least two sub-heating parts, and the at least two sub-heating parts are made of materials with different temperature coefficients of resistance.

18. The heating element as described in any one of claims 1 to 9, characterized in that, The electrical connection is fixed to the heating element and is injection molded together with the heating element into the ceramic matrix.

19. The heating element according to any one of claims 1 to 9, characterized in that, The ceramic matrix is ​​made of dense ceramic to limit the penetration of aerosol matrix.

20. A heating non-combustible device, characterized in that, include: Device casing; The heating element as described in any one of claims 1 to 19 is disposed in the housing of the device; And a power supply component, electrically connected to the electrical connection portion, for supplying power to the heating element.

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