WO2024027368A1 - Induction heating assembly and aerosol generation device - Google Patents

Abstract

An induction heating assembly (10) and an aerosol generation device. The induction heating assembly (10) comprises at least one conductive coil (1) and a supporting part (6); the at least one conductive coil (1) is arranged in a stacked manner and is used for generating a varying magnetic field when being powered on, such that a susceptor (4) cooperating with the conductive coil (1) generates heat by means of electromagnetic induction, so as to heat an aerosol-generating product (30). Each conductive coil (1) comprises a surrounding part (11) distributed in a spiral shape, the spiral extension direction of the surrounding part (11) continuously varying. In respect of a section of the surrounding part (11) which is obtained by cutting same on the basis of a plane passing across the axis of the conductive coil (1), the length dimension in the direction perpendicular to the axis is greater than the length dimension in the direction of the axis. The supporting part (6) is at least partially arranged between two adjacent turns of the surrounding part (11) and is used for keeping the distance between the two adjacent turns of the surrounding part (11). The induction heating assembly (10) effectively improves electromagnetic conversion efficiency and reduces the loss of the conductive coil (1) itself, thereby effectively reducing the heat loss of the aerosol generation device and reducing power consumption; in addition, the conductive coil (1) can maintain its own form.

Description

Induction heating components and aerosol generation devices

Cross-references to related applications

This application claims priority based on Chinese patent application 202222036439.2 submitted on August 3, 2022, the entire contents of which are incorporated herein by reference.

【Technical field】

The present invention relates to the field of electronic atomization technology, and in particular to an induction heating component and an aerosol generating device.

【Background technique】

The heat-not-burn aerosol generation device only needs to heat the special aerosol-generating products to about 200-350°C to generate aerosols. Compared with the traditional solution of burning aerosol-generating products to generate aerosols, harmful substances are greatly reduced. , the aerosol tastes basically the same, and has the advantages of safety, convenience, health, and environmental protection, etc., and has attracted people's attention and favor.

Currently, the heating methods of heat-not-burn aerosol generating devices on the market are mainly resistance heating and electromagnetic heating. The heating principle of resistive heating is to transfer the heat from the heating element to the aerosol-generating product through thermal conduction. This will make the aerosol-generating product close to the heating element have a better baking effect. The main heating principle of electromagnetic heating is to use a conductive coil to generate a changing magnetic field when energized. The sensor matched with the conductive coil generates heat through electromagnetic induction to heat the aerosol to produce products.

However, the electromagnetic heating aerosol generation device not only has a complicated fixed structure, but also has large losses in the conductive coil itself and low electromagnetic conversion efficiency, resulting in greater heat loss and higher power consumption of the whole machine. At the same time, due to the temperature resistance of the conductive coil Weak, causing the atomizer shell temperature to be high.

[Content of the invention]

The induction heating component and aerosol generation device provided by this application are intended to solve the problems of the existing conductive coil itself having large losses and low electromagnetic conversion efficiency, resulting in high heat loss and high power consumption of the entire machine.

In order to solve the above technical problems, the first technical solution adopted by this application is to provide an induction heating component. The induction heating component includes at least one conductive coil and a support part; at least one conductive coil is stacked and arranged to generate a changing magnetic field when energized, so that a sensor that cooperates with the conductive coil generates heat through electromagnetic induction to heat the aerosol-generating product; Each conductive coil includes a surrounding portion distributed in a spiral shape, and the direction of the spiral extension of the surrounding portion continuously changes, wherein the length dimension of the surrounding portion in a section taken by a plane passing through the axis of the conductive coil in a direction perpendicular to the axis Greater than the length dimension along the axis; the support portion is at least partially disposed between two adjacent turns of the surrounding portions for maintaining the spacing between the two adjacent turns of the surrounding portions.

It also includes a support component to form a receiving cavity for receiving aerosol-generating products; and the inner wall surface of the side wall of the support component forms the support part.

Wherein, at least one spiral groove is formed on the inner wall of the side wall of the support component, and the groove wall of the spiral groove forms the support part; or a portion of the inner wall surface of the side wall of the support component is convex toward the center, to form the support portion.

Wherein, the support component is hollow, and the conductive coil is disposed in the hollow of the support component; or, the support component is in a hollow shape. linear; the linear support component wraps the conductive coil; or the support component includes a plurality of support blocks, and the plurality of support blocks combine to form a hollow structure to accommodate the conductive coil.

Wherein, a susceptor is further included for cooperating with the conductive coil to generate heat through electromagnetic induction; wherein a part of the side wall of the susceptor protrudes toward the conductive coil to form the support part.

Wherein, the conductive coil is arranged around the periphery of the susceptor, and the susceptor is tubular for containing and heating the aerosol-generating product; a portion of the outer wall surface of the side wall of the susceptor protrudes toward the conductive coil, To form the support portion;

Or, the conductive coil is disposed in the susceptor, and the susceptor is needle-shaped or pin-shaped for inserting and heating the aerosol-generating product; part of the inner wall surface of the side wall of the susceptor faces the Conductive coils are raised to form the support portion.

Wherein, the sensor further includes a main body part, the support part is formed on the main body part, and the main body part is spaced apart from the conductive coil; the central axis of the main body part and the central axis of the conductive coil coincide.

Wherein, the number of the conductive coils is multiple, and the plurality of conductive coils are stacked along the axis of the sensor and are respectively used to connect to the power supply component.

Wherein, the angle between the thickness direction of the surrounding portion and the direction of the axis is 0°-60°.

Wherein, the thickness of the surrounding part is 0.05 mm to 1.5 mm.

Wherein, the angle between the thickness direction of the surrounding portion and the axis is 0°.

Wherein, the conductive coil further includes: a first electrical connection part, electrically connected to the first end of the surrounding part, for electrical connection with the positive electrode of the power supply; a second electrical connection part, electrically connected to the first electrical connection part The extension direction is the same and is electrically connected to the second end of the surrounding portion for electrical connection with the negative electrode of the power supply.

Wherein, the first electrical connection part and the second electrical connection part extend in a direction parallel to the axis; or, the first electrical connection part and the second electrical connection part extend in a direction perpendicular to the axis. direction extends.

In order to solve the above technical problems, the second technical solution adopted by this application is to provide an aerosol generating device. The aerosol generating device includes: an induction heating component and a power supply component; wherein the induction heating component is used to heat and atomize the aerosol-generating product when power is supplied, and the induction heating component is the above-mentioned induction heating component; the power supply component and The induction heating component is electrically connected for supplying power to the induction heating component.

In order to solve the above technical problems, the third technical solution adopted by this application is to provide an aerosol generating device. The aerosol-generating device includes: an aerosol-generating product, a sensor, an induction heating component, and a power supply component; wherein, the sensor is arranged in the aerosol-generating product; and the induction heating component is used to generate a changing magnetic field when energized, so that the The sensor generates heat through electromagnetic induction, thereby heating and atomizing the aerosol-generating substrate; the induction heating component is the above-mentioned induction heating component; the power supply component is electrically connected to the induction heating component for supplying the Powered by induction heating components.

In order to solve the above technical problems, the fourth technical solution adopted by this application is to provide an aerosol generating device. The aerosol generating device includes: a housing, an induction heating component and a power supply component. The induction heating component is used to generate electricity when power is supplied. Heating and atomizing aerosol-generating products, the induction heating component is the above-mentioned induction heating component; the power supply component is electrically connected to the induction heating component for supplying power to the induction heating component; and the power supply The component and the induction heating component are both arranged in the housing.

The beneficial effects of the present application are, compared with the prior art: the induction heating component and the aerosol generation device provided by the embodiments of the present application, the induction heating component and the aerosol generation device The heating component should include at least one conductive coil and a support part; each conductive coil includes a surrounding part distributed in a spiral shape, the direction of the spiral extension of the surrounding part continuously changes, and the surrounding part is a cross-section taken by a plane passing through the axis of the conductive coil , the length dimension along the direction perpendicular to the axis is greater than the length dimension along the direction along the axis, so that the conductive coil is flat; thus, when the conductive coil is energized, high-frequency current can be concentrated on the conductive coil according to the skin effect Conduction, compared to the solution with a larger radial size of the conductive coil, effectively improves the electromagnetic conversion efficiency of the conductive coil and reduces the loss of the conductive coil itself, thereby effectively reducing the heat loss of the aerosol generation device and reducing power consumption . In addition, by providing a support part, at least part of the support part is disposed between two adjacent turns of the surrounding parts, so that the distance between two adjacent turns of the surrounding parts is maintained through the support part, and the thickness of the surrounding part is prevented from being thin. The problem that the support strength is too low to support its original form occurs, thereby ensuring that the preset position of the matched sensor is always matched with a conductive coil to ensure the uniformity of heating of the aerosol-generating product.

[Picture description]

Figure 1a is a schematic structural diagram of an induction heating component provided by an embodiment of the present application;

Figure 1b is a schematic diagram of the overall structure of a conductive coil provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of the surrounding portion of the conductive coil shown in Figure 1b;

Figure 3 is a schematic diagram of a cross-section of the surrounding portion shown in Figure 2 taken from the A-A plane passing through the axis of the conductive coil;

Figure 4 is a cross-sectional view of the surrounding portion shown in Figure 2 along the A-A direction;

Figure 5 is a schematic structural diagram of a surrounding portion provided by another embodiment of the present application;

Figure 6 is an A-A sectional view of the surrounding portion shown in Figure 5;

Figure 7 is another A-A cross-sectional view of the surrounding portion shown in Figure 5;

Figure 8 is a schematic diagram of the overall structure of a conductive coil provided by another embodiment of the present application;

Figure 9a is a cross-sectional view of an induction heating assembly provided by an embodiment of the present application;

Figure 9b is a cross-sectional view of a support assembly provided by an embodiment of the present application;

Figure 10a is a schematic diagram of the distribution of multiple conductive coils;

Figure 10b is a schematic structural diagram of a conductive coil and a sensor provided by an embodiment of the present application;

Figure 11 is a schematic diagram of the positional relationship between the magnetic conductor 5, the conductive coil and the support assembly;

Figure 12 is a cross-sectional view of an induction heating assembly provided by another embodiment of the present application;

Figure 13 is a schematic structural diagram of an aerosol generating device provided by an embodiment of the present application;

Figure 14 is a schematic structural diagram of an aerosol generating device provided by another embodiment of the present application;

Figure 15 is a schematic structural diagram of an aerosol generating device provided by yet another embodiment of the present application.

Explanation of reference signs

Induction heating component 10; conductive coil 1; surrounding part 11; first electrical connection part 12; second electrical connection part 13; housing 2; support component 3; spiral groove 31; sensor 4; main body part 41; magnetic conductor 5; Power supply assembly 20; battery 21; power drive board 22; aerosol generating product 30; support part 6.

【Detailed ways】

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The terms “first”, “second” and “third” in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include at least one of these features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative positional relationship between components in a specific posture (as shown in the drawings). , sports conditions, etc., if the specific posture changes, the directional indication will also change accordingly. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to such processes, methods, products or devices.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

The present application will be described in detail below with reference to the drawings and embodiments.

Please refer to Figures 1a and 1b. Figure 1a is a schematic structural diagram of an induction heating component provided by an embodiment of the present application; Figure 1b is a schematic diagram of the overall structure of a conductive coil provided by an embodiment of the present application. In this embodiment, an induction heating component 10 is provided. The induction heating component 10 can be used in different fields, such as medical treatment, beauty, leisure smoking and other fields. The induction heating assembly 10 is used to heat and atomize the aerosol-generating article to form an aerosol when energized. The induction heating component 10 includes at least one conductive coil 1 and a support part 6 .

As shown in Figure 1b, the conductive coil 1 is used to generate a changing magnetic field when energized, so that the sensor 4 (see Figure 9a) matched with the conductive coil 1 generates heat through electromagnetic induction, thereby heating the aerosol-generating product to generate aerosol. . Among them, the aerosol-generating product preferably uses a solid matrix, which may include plant leaves such as vanilla leaves, tea leaves, mint leaves, and one or more of powders, granules, fragments, strips, or flakes; Alternatively, the solid matrix may contain additional volatile fragrance compounds that are released when the matrix is heated. Of course, aerosol-generating products can also be liquid bases or paste bases, such as oils and medicinal liquids with added aroma components. The following examples all take the aerosol-generating product using a solid matrix as an example.

Referring to Figure 2, Figure 2 is a schematic structural diagram of the surrounding portion of the conductive coil shown in Figure 1b. Each conductive coil 1 includes a surrounding portion 11, which is spirally distributed along the axis B and is surrounded to form a hollow; and the direction of the spiral extension of the surrounding portion 11 changes continuously. Specifically, as shown in FIG. 2 , along the spiral extending direction of the surrounding portion 11 , the cross-sections of the surrounding portion 11 taken from a plane passing through the axis B of the conductive coil 1 have the same shape and cross-sectional area. Of course, it is also possible that each cross-section has the same shape, and the cross-sectional area gradually decreases or increases along the direction of spiral extension.

In a specific embodiment, combined with FIG. 2 and FIG. 3 , FIG. 3 is a schematic diagram of a cross-section of the surrounding portion shown in FIG. 2 taken from the AA plane passing through the axis B of the conductive coil; In the cross-section taken on the plane of axis B, along the direction perpendicular to axis B The length dimension W1 in the direction of axis B is greater than the length dimension W2 in the direction of axis B. In this way, the conductive coil 1 can be made in a flat state, so that when the conductive coil 1 is energized, the high-frequency current is concentratedly conducted on the conductive coil 1 based on the skin effect. Compared with the solution where the radial size of the conductive coil 1 is larger, , effectively improving the electromagnetic conversion efficiency of the conductive coil 1 and reducing the loss of the conductive coil 1 itself, thereby effectively reducing the heat loss of the aerosol generating device and reducing the power consumption.

Specifically, the cross-sectional shape of the surrounding portion 11 taken from a plane passing through the axis B of the conductive coil 1 may be a rectangle (as shown in FIG. 3 ), an ellipse, a polygon, etc. The surrounding portion 11 can be specifically wound by an excitation coil.

The angle between the thickness direction C of the surrounding portion 11 and the direction of the axis B may be 0°-60°. In a specific embodiment, as shown in Figure 4, Figure 4 is a cross-sectional view along the A-A direction of the surrounding portion shown in Figure 2; the angle between the thickness direction C of the conductive coil 1 and the axis B is 0°; that is, the angle between the thickness direction C of the conductive coil 1 and the axis B is 0°; that is, the The thickness direction C is parallel to the direction of the axis B. In this embodiment, the surrounding portion 11 is like a flat spring, and the plane of each turn of the surrounding portion 11 is perpendicular to the axis B; after the surrounding portion 11 is energized, a uniform magnetic field is formed in the hollow of the surrounding portion 11 .

Specifically, along the direction of the axis B, the spacing between adjacent turns of the surrounding portion 11 corresponding to different positions of the axis B is the same, so that each position of the surrounding portion 11 corresponding to the axis B generates the same magnetic field, and each position of the sensor 4 is in this position. The same amount of heat is generated under the magnetic field, thereby ensuring uniform heating at all locations of the aerosol-generating product.

Of course, in other embodiments, as shown in FIG. 4 , the spacing between the surrounding portions 11 of adjacent turns at different positions of the axis B may not be exactly the same; for example, the spacings L2 and L1 between the surrounding portions 11 of adjacent turns may not be exactly the same. different. Specifically, along the direction of axis B, the spacing between adjacent turns of the surrounding portion 11 can gradually increase, or gradually decrease, or first increase and then decrease, etc.; by controlling the adjacent turns of the surrounding portion 11 The degree of density causes the matched sensor 4 to form multiple temperature zones with different temperatures along the direction of axis B.

In another specific embodiment, refer to Figures 5 and 6. Figure 5 is a schematic structural diagram of the surrounding portion provided by another embodiment of the present application; Figure 6 is an A-A sectional view of the surrounding portion shown in Figure 5; and the above figure The difference between the embodiments corresponding to 2 is that the angle α between the thickness direction C of the surrounding portion 11 and the axis B is greater than 0° and less than 60°. For example, the angle α between the thickness direction C of the surrounding portion 11 and the axis B is 30°, 45°, or 60°. In this specific embodiment, by tilting the plane where the surrounding part 11 is located at a certain angle relative to the axis B, the density of the magnetic field generated by energizing the surrounding part 11 along the direction of the axis B can be adjusted, so that the magnetic field that cooperates with the surrounding part 11 can be adjusted. The sensor 4 forms temperature zones with different temperature gradients along the direction of axis B to meet different temperature requirements at different locations of the aerosol-generating product.

In a specific embodiment, the thickness h of the surrounding portion 11 can be matched and selected according to the skin depth d of the high-frequency signal flowing through the conductor to produce a skin effect. Skin depth: Among them, μ _r is the relative magnetic permeability; μ ₀ is the vacuum magnetic permeability; σ is the electrical conductivity; f is the current frequency. The value range of the thickness h of the surrounding portion 11 can be Different from the conventional power frequency electromagnetic heating power of hundreds of kilowatts, the conductive coil 1 can be used at low power, such as within a hundred watts; the frequency of the high-frequency current used can cover 10Khz to 10Mhz, and the side wall of the surrounding part 11 The thickness h ranges from 0.05 mm to 1.5 mm.

Specifically, the material of the surrounding part 11 can be copper, and the resistivity of copper is The relative magnetic permeability μ _r =1, the vacuum magnetic permeability μ ₀ =4π×10 ^-7 , and the current frequency is 10Khz to 10Mhz. Substitute into the calculation formula of skin depth d above to get the range of d The circumference is (0.024mm-0.76mm), and the thickness h of the side wall of the surrounding portion 11 can be That is (0.008mm-1.52mm). However, in order to ensure that the surrounding part 11 has sufficient support strength to maintain its own shape, the thickness h of the side wall of the surrounding part 11 may be 0.05 mm to 1.5 mm.

Of course, in other embodiments, the material of the surrounding portion 11 can also be silver, copper-aluminum alloy, etc.

Specifically, as shown in Figure 2 or Figure 5, along the spiral extension direction of the surrounding portion 11, the thickness of the side walls of the surrounding portion 11 can be equal everywhere to ensure that the magnetic field generated when the surrounding portion 11 is working is the same everywhere and improve heating uniformity. .

Of course, in other embodiments, see FIG. 7 , which is another A-A cross-sectional view of the surrounding part shown in FIG. 5 ; along the spiral extension direction of the surrounding part 11 , the side wall of the surrounding part 11 may also have at least two thicknesses. Not equal; for example, along the direction of axis B, the thickness h2 of the side wall of the surrounding portion 11 at the first position is greater than the thickness h1 of the side wall of the surrounding portion 11 at the second position. In this way, while the thinner surrounding portion 11 can be used to reduce its own loss and improve the electromagnetic conversion rate, by thickening the thickness of the side walls at some locations of the surrounding portion 11 , the supporting strength of the surrounding portion 11 itself can be increased to maintain the surrounding. The shape of part 11 itself.

In a specific embodiment, as shown in Figure 1b, the conductive coil 1 also includes a first electrical connection part 12 and a second electrical connection part 13; the first electrical connection part 12 is electrically connected to the first end of the surrounding part 11 for It is electrically connected to the positive pole of the power supply; the second electrical connection part 13 is electrically connected to the second end of the surrounding part 11 and is used to be electrically connected to the negative pole of the power supply. The shape and size of the first electrical connection part 12 and/or the second electrical connection part 13 may be consistent with the shape and size of the surrounding part 11 .

Specifically, the first electrical connection part 12 and the second electrical connection part 13 may extend in the same direction to facilitate the preparation of the aerosol generating device and reduce the space occupied. In a specific embodiment, as shown in FIG. 1 b , the first electrical connection part 12 and the second electrical connection part 13 extend in a direction parallel to the axis B. In another specific embodiment, see FIG. 8 , which is a schematic diagram of the overall structure of a conductive coil provided by another embodiment of the present application; the first electrical connection part 12 and the second electrical connection part 13 are along the direction perpendicular to the axis B. extend.

The conductive coil 1 provided in this embodiment includes a spirally distributed surrounding portion 11. The direction of the spiral extension of the surrounding portion 11 continuously changes, and in a cross section of the surrounding portion 11 taken from a plane passing through the axis B of the conductive coil 1, The length dimension along the direction perpendicular to the axis B is greater than the length dimension along the direction along the axis B, so that the conductive coil 1 is flat; thus, when the conductive coil 1 is energized, high-frequency current can be caused to flow in the conductive coil according to the skin effect. Concentrated conduction on 1, compared with the larger radial size of the conductive coil, such as the circular cross-section scheme, effectively improves the electromagnetic conversion efficiency of the conductive coil 1, reduces the loss of the conductive coil 1 itself, thereby effectively reducing the gas The heat loss of the sol generating device reduces power consumption.

Please refer to Figure 9a. Figure 9a is a cross-sectional view of an induction heating assembly provided by an embodiment of the present application; Figure 10a is a schematic diagram of the distribution of multiple conductive coils. In a specific embodiment, as shown in Figure 10a, the induction heating assembly 10 includes a plurality of conductive coils 1. The plurality of conductive coils 1 are stacked along the axis B, and each conductive coil 1 can be used to electrically connect to the power supply assembly 20. connected so that the power supply assembly 20 can supply power to different conductive coils 1 respectively to achieve zone control of the conductive coils 1 on the induction heating assembly 10, so that the sensor 4 that cooperates with the conductive coil 1 has multiple temperature zones with different temperatures, Improve the overall atomization effect of the induction heating component 10.

Please continue to refer to Figure 1a. At least part of the support portion 6 is disposed between two adjacent turns of the surrounding portions 11 to maintain the spacing between the two adjacent turns of the surrounding portions 11 and prevent the thickness of the surrounding portion of the conductive coil 1 from being thinner. , the problem that the support strength is low and cannot support the original form of the conductive coil 1 occurs, thereby ensuring that the preset position of the sensor 4 that cooperates with it is always matched with the conductive coil 1, ensuring that the aerosol generating product 30 Heating uniformity.

Specifically, as shown in Figure 9a, the induction heating component 10 also includes a housing 2, a support component 3 and a sensor 4.

The housing 2 is a hollow structure with one end open, and the open end of the housing 2 is used to insert the aerosol-generating product. To facilitate the insertion of the aerosol-generating article, the radial dimension of the open end of the housing 2 gradually increases in the direction of insertion away from the aerosol-generating article.

The support component 3 is disposed in the housing 2 and is spaced apart from the housing 2 to reduce heat conduction through contact between the support component 3 and thereby reduce the temperature on the side wall of the housing 2 when the induction heating component 10 is working.

Specifically, the support component 3 forms a receiving cavity, which is used to receive aerosol-generating products; and the inner wall surface of the side wall of the support component 3 forms the support portion 6 . In a specific embodiment, as shown in Figure 9b, Figure 9b is a cross-sectional view of a support component provided by an embodiment of the present application; the inner wall of the side wall of the support component 3 is formed with at least one spiral groove 31, and the spiral groove 31 is The groove walls form this support 6 . Of course, in other embodiments, the portion of the inner wall surface of the side wall of the support assembly 3 can also be convex toward the center to form the support portion 6 . Specifically, at least one conductive coil 1 can be injection molded together with the support component 3 to completely lock the intercept and outer dimensions of adjacent turns of the conductive coil 1 to ensure the consistency of mass-produced conductive coils 1 .

The material of the support component 3 can be plastic or silicone, and the support component 3 can be combined with the conductive coil 1 by injection molding or potting. Alternatively, the material of the support component 3 can be ceramic, and the support component 3 is combined with the conductive coil 1 through powder sintering. Alternatively, the support component 3 may be made of glass, and the support component 3 may be cast together with the conductive coil 1 through molten glass liquid, or may be manufactured together with the conductive coil 1 through glue potting or integral sintering. Of course, the support component 3 is also hollow, and the conductive coil 1 is disposed in the hollow of the support component 3 . Or, the support component 3 is linear; the linear support component 3 wraps the conductive coil 1 . Alternatively, the support assembly 3 includes multiple support blocks, and the multiple support blocks are combined to form a hollow structure to accommodate the conductive coil 1 .

Specifically, the material of the support component 3 can also be a magnetically conductive material to guide the magnetic field on the side of the conductive coil 1 away from the sensor 4 and reduce the loss of electromagnetic signals. Among them, the magnetically permeable material can be iron, cobalt, nickel, etc. Alternatively, a shielding layer can be provided on the side surface of the support component 3 facing away from the conductive coil 1 to shield external electromagnetic signals and reduce the leakage of electromagnetic signals when the conductive coil 1 is working. The shielding layer can be a metal shielding layer, such as iron, cobalt, nickel and other shielding layers.

The sensor 4 is disposed in the support component 3 and is used to cooperate with the conductive coil 1 to generate heat through electromagnetic induction when the conductive coil 1 is energized to heat and atomize the aerosol-generating product to generate aerosol. In a specific embodiment, see Figure 10b, which is a schematic structural diagram of a conductive coil and a sensor provided by an embodiment of the present application; the sensor 4 includes a main body 41 and a support portion 6 formed on the main body, that is, a support The portion 6 is formed by a portion of the side wall of the susceptor 4 that projects toward the conductive coil 1 .

In a specific embodiment, as shown in Figures 9a and 10a, the sensor 4 is hollow and used to accommodate aerosol-generating products; the conductive coil 1 is arranged around the periphery of the sensor 4; when the conductive coil 1 is energized, the conductive coil 1 passes through the conductive coil 1. The alternating magnetic field generated by the coil 1 causes the sensor 4 to generate heat in the alternating magnetic field to heat the aerosol-generating product contained therein. In this embodiment, as shown in FIG. 10 b , a portion of the outer wall surface of the side wall of the sensor 4 may be protruded toward the conductive coil 1 to form a support portion 6 .

Specifically, the bottom of the main body 41 of the sensor 4 is fitted into the reserved slot of the support component 3 to fix the sensor 4 and make the conductive coil 1 coincide with the central axis B of the sensor 4 .

The sensor 4 may be a complete hollow tube, or a hollow tube formed by a single piece or a combination of multiple pieces. The sensor 4 can be made of metal with high conductivity, such as copper, silver or gold. Specifically, the sensor 4 can use a single metal, for example, use local temperature Permalloy with a temperature below 500°C. Alternatively, the sensor 4 can be multi-layer composite using metal with a local temperature within 500°C + copper + metal with a Curie temperature point higher than 500°C.

The thickness of the side wall of the susceptor 4 can be determined by the skin effect based on the principle of electromagnetic induction heating. Specifically, the thickness of the side wall of the sensor 4 corresponds to the skin depth at the frequency f: (where μ _r is the relative magnetic permeability; μ ₀ is the vacuum magnetic permeability; σ is the electrical conductivity; f is the current frequency). The optimal thickness range is Combining electromagnetic heating simulation and actual processing and production feasibility, the optimal energy efficiency ratio thickness value of sensor 4 is selected.

Among them, because the sensor 4 has a large heat capacity and high heating energy, and the sensor 4 is close to the conductive coil 1, the heat of the sensor 4 is easily transferred to the conductive coil 1, which will cause a large heat loss. To this end, the main body 41 of the susceptor 4 can be spaced apart from the conductive coil 1 and the support component 3 to minimize the heat on the susceptor 4 from being transferred to the conductive coil 1 and the support component 3 through contact heat conduction, thereby reducing the risk of The temperature of the housing 2 of the induction heating assembly 10 is sensed.

Of course, in order to further reduce heat transfer from the sensor 4 to the conductive coil 1 and cause heat loss, a heat insulation layer (not shown) can be provided on the side surface of the sensor 4 facing the conductive coil 1 . The thermal insulation layer can be formed on the entire surface of the sensor 4 facing the conductive coil 1 by coating.

In a specific embodiment, refer to Figure 11, which is a schematic diagram of the positional relationship between the magnetic conductor 5, the conductive coil and the support assembly; the induction heating assembly 10 also includes a magnetic conductor 5, which is located on a side of the conductive coil 1 away from the sensor 4. side, used to guide the magnetic field on the side of the conductive coil 1 away from the sensor 4 to reduce the amount of electromagnetic signal dissipation.

Specifically, the material of the magnetic conductor 5 is a soft magnetic alloy; the initial magnetic permeability of the soft magnetic alloy is not less than 50, and the resistivity is not less than 8×10 ^-6 Ω·m. Specifically, the magnetic conductor 5 can be made of ferrite integrally formed or wrapped in multiple layers of amorphous alloy.

Of course, the magnetic conductor 5 can also serve as the support component 3. The magnetic conductor 5 can be in the form of a strip, and the strip-shaped magnetic conductor 5 is arranged around the conductive coil 1. Or the magnetic conductor 5 is integrally formed and hollow, and the conductive coil 1 is arranged in the hollow of the magnetic conductor 5 . Alternatively, the magnetically conductive body 5 includes a plurality of magnetically conductive blocks, and the plurality of magnetically conductive blocks are combined to form a hollow structure to accommodate the conductive coil 1 . Or, the magnetic conductive body 5 is combined with the conductive coil 1 through powder sintering to support the conductive coil 1 and the sensor 4 while achieving magnetic permeability.

Of course, in other embodiments, the conductive coil 1 can also be disposed in the susceptor 4. The susceptor 4 is needle-shaped or pin-shaped for inserting the aerosol-generating product to heat and atomize the aerosol-generating product through electromagnetic induction. In this embodiment, a portion of the inner wall surface of the side wall of the susceptor 4 protrudes toward the conductive coil 1 to form the support portion 6 .

In another specific embodiment, refer to Figure 12, which is a cross-sectional view of an induction heating assembly provided by another embodiment of the present application; different from the embodiment corresponding to Figure 9a, the sensor 4 is needle-shaped or pin-shaped. , for inserting an aerosol-generating article to heat and atomize the aerosol-generating article through electromagnetic induction. Specifically, as shown in Figure 12, the bottom of the support component 3 has a slot, and the fixing seat at the bottom of the sensor 4 is embedded in the slot to fix the sensor 4 and the support component 3, and align the central axis of the main body 41 of the sensor 4 B coincides with the central axis B of the support assembly 3 .

The induction heating assembly 10 provided in this embodiment can reduce the number of conductive coils 1 by arranging at least one conductive coil 1 mentioned above. Its own loss increases the electromagnetic conversion rate. At the same time, compared with conventional spiral conductive coils formed by circular cross-sections or coils with larger thickness, each turn of the conductive coil 1 of the induction heating assembly 10 is like a thin sheet stacked together. In this way, when the conductive coil 1 with the same number of turns is wound, the axis distance in the direction of axis B is shorter, and the product volume can be reduced. At the same axis distance, more conductive coils 1 with more turns can be arranged as needed; or multiple conductive coils 1 with the same number of turns can be arranged, and multiple conductive coils 1 can be superimposed in the direction of axis B to form The coils are arranged in rows, so that each local position or the entire body of the sensor 4 can be accurately generated to form multiple temperature zones. In addition, by arranging the susceptor 4 at a distance from the conductive coil 1 and the support assembly 3, the heat conduction of the susceptor 4 can be reduced, thereby reducing the heat loss on the susceptor 4 and improving the heat utilization rate. In addition, by providing the magnetic conductor 5, the loss of the electromagnetic signal of the conductive coil 1 is reduced. Furthermore, by providing the support part 6, at least part of the support part 6 is disposed between two adjacent turns of the surrounding parts 11, so that the distance between the two adjacent turns of the surrounding parts 11 is maintained through the support part 6, and the surrounding part is prevented from being 11 is thinner and has lower support strength than can support its original form. This ensures that the preset position of the sensor 4 is always matched with the conductive coil 1 to ensure uniform heating of the aerosol-generating product 30 .

In one embodiment, refer to Figures 13 and 14. Figure 13 is a schematic structural diagram of an aerosol generating device provided by one embodiment of the present application; Figure 14 is a schematic structural diagram of an aerosol generating device provided by another embodiment of the present application. picture. An aerosol generating device is provided. The aerosol generating device includes a housing 2 , an induction heating component 10 and a power supply component 20 . Among them, the induction heating component 10 is used to house the aerosol-generating product, so as to heat and atomize the aerosol-generating product when the power is turned on. The induction heating component 10 is the induction heating component 10 provided in any of the above embodiments; its specific structure and function You can participate in the above related text descriptions. The structure of the aerosol generation device corresponding to the induction heating assembly 10 shown in Figure 9a can be seen in Figure 13; the structure of the aerosol generation device corresponding to the induction heating assembly 10 shown in Figure 12 can be seen in Figure 14.

The power supply component 20 is electrically connected to the induction heating component 10 and is used to supply power to the induction heating component 10 to ensure that the aerosol generating device can operate normally. As shown in FIG. 13 or FIG. 14 , the power supply assembly 20 includes a battery 21 and a power driving board 22 electrically connected to the battery 21 . The battery 21 and the power driving board 22 can be respectively located in the housing 2 to form an integrated aerosol generating device. Specifically, the battery 21 can be a dry battery 21, a lithium battery 21, etc.; the power drive board 22 is electrically connected to the first electrical connection part 12 and the second electrical connection part 13 of the conductive coil 1 to supply power to the conductive coil 1.

Of course, in other embodiments, the induction heating component 10 and the power supply component 20 of the aerosol generating device are detachably connected to facilitate installation and replacement.

In one embodiment, refer to FIG. 15 , which is a schematic structural diagram of an aerosol generating device provided by another embodiment of the present application; another aerosol generating device is provided, and the aerosol corresponding to FIG. 13 and FIG. 14 is provided. The difference between the generating device and the aerosol generating device is that the aerosol generating device also includes an aerosol generating product 30 , and the sensor 4 is specifically arranged in the aerosol generating product 30 . The aerosol-generating product 30 can be specifically accommodated in the receiving cavity formed by the support assembly 3, so that the sensor 4 in the aerosol-generating product 30 centrally heats the aerosol-generating product 30 through electromagnetic induction.

The above are only embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, All are similarly included in the patent protection scope of this application.

Claims (16)

1. An induction heating component, including:

   At least one conductive coil, the at least one conductive coil is stacked and arranged to generate a changing magnetic field when energized, so that the sensor that cooperates with the conductive coil generates heat through electromagnetic induction to heat the aerosol-generating product; each of the above-mentioned The conductive coil includes a circumferential portion distributed in a spiral shape, and the direction of the spiral extension of the circumferential portion continuously changes, wherein the circumferential portion is in a cross-section taken by a plane passing through the axis of the conductive coil, along a direction perpendicular to the The length dimension in the direction of the axis is greater than the length dimension in the direction along the axis;

   The supporting part is at least partially disposed between two adjacent turns of the surrounding parts, and is used to maintain the distance between the two adjacent turns of the surrounding parts.
2. The induction heating assembly according to claim 1, wherein:

   It also includes a support component to form a receiving cavity for receiving aerosol-generating products; and the inner wall surface of the side wall of the support component forms the support part.
3. The induction heating assembly according to claim 2, wherein the inner side wall of the side wall of the support assembly is formed with at least one spiral groove, and the groove wall of the spiral groove forms the support portion; or

   A portion of the inner wall surface of the side wall of the support assembly protrudes toward the center to form the support portion.
4. The induction heating assembly according to claim 2, wherein:

   The support component is hollow, and the conductive coil is disposed in the hollow of the support component; or,

   The support component is linear; the linear support component wraps the conductive coil; or,

   The support assembly includes a plurality of support blocks, and the plurality of support blocks are combined to form a hollow structure to accommodate the conductive coil.
5. The induction heating assembly according to claim 1, wherein:

   A susceptor is also included for cooperating with the conductive coil to generate heat through electromagnetic induction; wherein a portion of the side wall of the susceptor protrudes toward the conductive coil to form the support portion.
6. The induction heating assembly according to claim 5, wherein:

   The conductive coil is arranged around the periphery of the susceptor, and the susceptor is tubular for containing and heating the aerosol-generating product; part of the outer wall surface of the side wall of the susceptor protrudes toward the conductive coil to form a The supporting part;

   Or, the conductive coil is disposed in the susceptor, and the susceptor is needle-shaped or pin-shaped for inserting and heating the aerosol-generating product; part of the inner wall surface of the side wall of the susceptor faces the Conductive coils are raised to form the support portion.
7. The induction heating assembly according to claim 5, wherein the sensor further includes a main body part, the support part is formed on the main body part, and the main body part is spaced apart from the conductive coil; the main body part The central axis coincides with the central axis of the conductive coil.
8. The induction heating assembly according to claim 5, wherein the number of the conductive coils is multiple, and the plurality of conductive coils are stacked along the axis of the sensor and are respectively used to connect to the power supply assembly.
9. The induction heating assembly according to claim 1, wherein the angle between the thickness direction of the surrounding portion and the direction of the axis is 0°-60°.
10. The induction heating assembly according to claim 9, wherein the thickness of the surrounding portion is 0.05 mm to 1.5 mm.
11. The induction heating assembly according to claim 10, wherein an angle between the thickness direction of the surrounding portion and the axis is 0°.
12. The induction heating assembly of claim 8, wherein the conductive coil further includes:

    The first electrical connection part is electrically connected to the first end of the surrounding part and is used to be electrically connected to the positive electrode of the power supply;

    The second electrical connection part extends in the same direction as the first electrical connection part and is electrically connected to the second end of the surrounding part for electrical connection with the negative electrode of the power supply.
13. The induction heating assembly of claim 12, wherein the first electrical connection and the second electrical connection extend in a direction parallel to the axis; or,

    The first electrical connection part and the second electrical connection part extend in a direction perpendicular to the axis.
14. An aerosol generating device, including:

    An induction heating component used to heat and atomize aerosol-generating products when power is applied, and the induction heating component is the induction heating component according to any one of claims 1-13;

    A power supply component is electrically connected to the induction heating component and used to supply power to the induction heating component.
15. An aerosol generating device, including:

    aerosol-generating articles;

    A sensor arranged in the aerosol-generating article;

    An induction heating component is used to generate a changing magnetic field when energized, so that the sensor generates heat through electromagnetic induction, thereby heating and atomizing the aerosol-generating substrate; the induction heating component is as claimed in claims 1-4, The induction heating component described in any one of 9-13;

    A power supply component is electrically connected to the induction heating component and used to supply power to the induction heating component.
16. An aerosol generating device, including:

    case;

    An induction heating component used to heat and atomize aerosol-generating products when power is applied, and the induction heating component is the induction heating component according to any one of claims 1-13;

    A power supply component is electrically connected to the induction heating component and used to supply power to the induction heating component; and both the power supply component and the induction heating component are arranged in the housing.