Heating body and atomization device

Abstract

The utility model relates to a heating body and an atomization device, the heating body comprises a base body and a heating assembly, the base body is provided with a containing cavity and a closed cavity surrounding the containing cavity, the closed cavity and the containing cavity are mutually independent, and the side wall, located between the containing cavity and the closed cavity, in the base body is a light-transmitting wall; the heating assembly comprises a plurality of light-heat sources electrically connected in parallel, the light-heat sources are evenly distributed in the closed cavity around the containing cavity, light emitted by the light-heat sources irradiates and heats the atomized matrix in the containing cavity after penetrating through the light-transmitting wall, and the light emitted by the light-heat sources comprises visible light and infrared light. Based on the plurality of light heat sources which are uniformly arranged around the accommodating cavity and are connected in parallel, the 360-degree circumferential uniform heating of the heating body can be realized by utilizing visible light and infrared light emitted by the light heat sources, so that an atomized matrix can be more uniformly and sufficiently heated, the quality and taste of aerosol are ensured, the manufacturing process of the heating body is simplified, and the production cost is reduced. And support is provided for reducing the cost of the heating body and the atomizing device.

Description

Technical Field

[0001] This application relates to the field of atomization technology, specifically to a heating element and an atomizing device. Background Technology

[0002] An atomizing device is an electronic device that heats a substrate, causing it to generate an aerosol without combustion. Current atomizing devices are mainly classified into several types based on their heating method, including circumferential heating and central heating. Circumferential heating involves inserting the substrate into the heating element of the atomizing device, utilizing the contact between the heating element's sidewall and the substrate to conduct heat, thereby heating the substrate and achieving atomization. However, due to uneven heating, this uneven heating can easily lead to problems such as unsatisfactory atomization effects, poor aerosol quality, or poor taste. Utility Model Content

[0003] The main technical problem addressed by this application is to provide a heating element and an atomizing device using the heating element, which can heat the substrate more uniformly and fully.

[0004] According to a first aspect, one embodiment provides a heating element, comprising:

[0005] A substrate having a receiving cavity for accommodating an atomizing matrix and a closed cavity surrounding the receiving cavity, the receiving cavity and the closed cavity being independent of each other, and a sidewall in the substrate located between the receiving cavity and the closed cavity being a light-transmitting wall; and

[0006] The heating component includes multiple photothermal sources connected in parallel, which are evenly distributed around the receiving cavity within the enclosed cavity; light emitted by the photothermal sources passes through the light-transmitting wall and irradiates the atomizing matrix to heat the atomizing matrix and generate an aerosol; wherein the light emitted by the photothermal sources includes visible light and infrared light.

[0007] In one embodiment, the photothermal source includes a photothermal filament, which is at least one of tungsten, molybdenum, tantalum, iridium, platinum, and rhenium filaments; wherein, the photothermal filaments of multiple photothermal sources are electrically connected in parallel via electrode leads, which are led out from the enclosed cavity to connect to a power supply component.

[0008] In one embodiment, the photothermal filament extends axially within the receiving cavity and is arranged in the enclosed cavity, or the photothermal filament extends circumferentially within the receiving cavity and is arranged in the enclosed cavity.

[0009] In one embodiment, the internal pressure of the enclosed cavity is less than the external pressure of the enclosed cavity, and / or the enclosed cavity is filled with an inert gas.

[0010] In one embodiment, the number of heating components is set to multiple, the multiple heating components are arranged side by side in the axial direction of the receiving cavity, and the photothermal sources of at least two of the multiple heating components emit light independently of each other.

[0011] In one embodiment, the substrate includes an inner tube and an outer tube, the tube space of the inner tube serves as the receiving cavity, and the peripheral sidewall of the inner tube serves as the light-transmitting wall; the inner tube is disposed inside the outer tube and spaced apart from the outer tube; the outer tube and the inner tube are sealed together at both ends in the axial direction of the receiving cavity to form the closed cavity between the inner tube and the outer tube.

[0012] In one embodiment, the peripheral wall of the outer tube is covered with a light-reflecting layer for reflecting light emitted by the photothermal source toward the receiving cavity.

[0013] In one embodiment, the inner tube is made of quartz material, or both the inner tube and the outer tube are made of quartz material.

[0014] In one embodiment, the inner tube portion and the outer tube portion are integrally formed.

[0015] According to a second aspect, one embodiment provides an atomizing device, including a housing assembly, a power supply assembly, and a heating element as described in the first aspect. The housing assembly has an air inlet channel and an air outlet channel. The heating element is disposed inside the housing assembly. The receiving cavity communicates between the air inlet channel and the air outlet channel. The photothermal source is electrically connected to the power supply assembly.

[0016] The heating element according to the above embodiment includes a substrate and a heating component. The substrate has a receiving cavity and a closed cavity surrounding the receiving cavity. The closed cavity and the receiving cavity are independent of each other. The sidewall of the substrate located between the receiving cavity and the closed cavity is a light-transmitting wall. The heating component includes multiple photothermal sources connected in parallel electrically. The multiple photothermal sources are evenly distributed around the receiving cavity within the closed cavity. The light emitted by the photothermal sources passes through the light-transmitting wall and irradiates and heats the atomized matrix within the receiving cavity. The light emitted by the photothermal sources includes visible light and infrared light. Based on the multiple photothermal sources evenly arranged and connected in parallel around the receiving cavity, the visible light and infrared light emitted by the photothermal sources can be used to achieve 360-degree circumferential uniform heating of the heating element. This not only allows for more uniform and sufficient heating of the atomized matrix, ensuring the quality and taste of the aerosol, but also simplifies the manufacturing process of the heating element, supporting the reduction of the cost of the heating element and atomizing device. Attached Figure Description

[0017] Figure 1 This is a partial cross-sectional structural diagram of an atomizing device according to one embodiment.

[0018] Figure 2This is a schematic diagram of the structural layout of the photothermal filament in a heating element according to one embodiment (I).

[0019] Figure 3 A schematic diagram of the cross-sectional structure of a heating element in one embodiment (I).

[0020] Figure 4 for Figure 3 A schematic diagram showing the structural relationship between the heating element and the atomizing matrix when applied in a medium-heating process.

[0021] Figure 5 This is a schematic diagram (II) of the structural layout of the photothermal filament in the heating element of one embodiment.

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of a heating element in one embodiment (II).

[0023] Figure 7 A schematic diagram of the cross-sectional structure of a heating element in one embodiment (III).

[0024] In the picture:

[0025] 100, Heating element; 100a, Receiving cavity; 100b, Enclosed cavity; 110, Substrate; 111, Inner tube; 112, Outer tube; 120, Photothermal source; 130, Electrode lead; 140, Light reflective layer; 200, Housing assembly; 200a, Air inlet channel; 200b, Air outlet channel; 300, Power supply assembly; 400, Atomizing matrix. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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).

[0029] Existing atomizing devices primarily employ circumferential thick-film printing technology for circumferential heating. This involves printing a thick-film resistor onto the outer wall of an insulated metal tube to form a heating element. By controlling the heating of the thick-film resistor, heat is conducted through the metal tube to the substrate inside, thus achieving circumferential heating of the substrate. However, this type of circumferential heating solution generally suffers from the following drawbacks:

[0030] 1. Because thick-film resistors need to be printed on the wall of the metal tube, the manufacturing process of the heating element is relatively complex and it is difficult to improve the yield rate, resulting in high processing and manufacturing costs. 2. Heat conduction is achieved through the contact relationship between the metal tube and the atomizing matrix. However, it is impossible to ensure uniform heating across the entire area of ​​the metal tube wall, leading to uneven heating of the matrix. This can easily cause severe localized overheating or insufficient heating of the matrix, which can significantly reduce the quality and taste of the aerosol. 3. At high temperatures, the metal tube may release and migrate metal ions, which not only affects the heating and atomization effect but also contaminates the matrix or aerosol.

[0031] The atomizing device provided in this application is based on multiple photothermal sources arranged uniformly at 360 degrees and connected in parallel to form a heating element with a unique structure. By utilizing the visible light and infrared light emitted by the photothermal sources, the heating element or atomizing device can uniformly and fully heat the atomizing matrix in a simpler heating method, ensuring the quality and taste of the aerosol. At the same time, the processing technology of the heating element is simpler, effectively reducing the manufacturing cost of the heating element and the application cost of the atomizing device.

[0032] Please see Figure 1 The atomizing device provided in this application embodiment, such as an atomizing device with circumferential heating function, includes a heating element 100, a housing assembly 200, a power supply assembly 300, and other functional components as needed; detailed description follows.

[0033] Please see Figure 1The housing assembly 200 can be understood as a collection of related structural components that constitute the basic structural framework and outer contour of the atomizing device. For example, the housing assembly 200 can be assembled from an outer shell, internal tubing, etc. Users can carry, move, hold, and operate the atomizing device with the help of the housing assembly 200.

[0034] The housing assembly 200 has an air inlet channel 200a and an air outlet channel 200b inside. The heating element 100 is disposed inside the housing assembly 200 and is arranged between the air inlet channel 200a and the air outlet channel 200b. When the atomizing device is used, by inserting the atomizing matrix 400 into the heating element 100 through the air outlet channel 200b, the heating element 100 can heat the atomizing matrix 400 to a temperature that generates aerosol but is not high enough to cause combustion. At the same time, a negative pressure is applied to the outlet end of the air outlet channel 200b (e.g., suction of the atomizing matrix 400), which causes air from outside the atomizing device to enter the heating element 100 through the air inlet channel 200a, so that the generated aerosol can be discharged from the air outlet channel 200b with the airflow and used.

[0035] Please see Figure 1 The power supply component 300 can be understood as a collection of circuit boards, battery cells and other related functional devices (such as buttons, displays, indicator lights and other components that play an information interaction role). The power supply component 300 can support the realization of all or part of the functions of the atomizing device, such as controlling the atomizing device to start and stop heating, adjusting the heating power or heating mode of the heating element 100, and displaying the status information of the atomizing device.

[0036] For example, the power supply component 300 and the housing component 200 are two relatively independent functional structures. By using detachable connection methods such as snap-fit, magnetic attraction, or sleeve connection, the power supply component 300 and the housing component 200 (along with the heating element 100) can be assembled to form an atomizing device ready for use. For example, the atomizing device adopts an integrated structure, where the power supply component 300 and the heating element 100 are structurally integrated via the housing component 200 to form an integrated atomizing device.

[0037] The following mainly introduces the heating element 100. Other components of the atomizing device (such as the housing assembly 200, power supply assembly 300, etc.) can be selected and designed with reference to existing technologies, and will not be elaborated here.

[0038] Please see Figures 1 to 7The heating element 100 includes a base 110 and a heating component. The base 110 has a receiving cavity 100a and a closed cavity 100b surrounding the receiving cavity 100a. The receiving cavity 100a is connected between the air inlet channel 200a and the air outlet channel 200b, and is mainly used to accommodate the atomizing matrix 400 (e.g., the atomizing matrix 400 inserted into the receiving cavity 100a via the air outlet channel 200b). The closed cavity 100b is independent of the receiving cavity 100a, and the side wall of the base 110 located between the receiving cavity 100a and the closed cavity 100b is a light-transmitting wall with light-transmitting function or made of a light-transmitting material (e.g., quartz). It can be understood that the light-transmitting wall refers to the side wall that structurally separates the closed cavity 100b and the receiving cavity 100a so that the two are not connected to each other.

[0039] For ease of distinction and description, this paper defines three directions for the receiving cavity 100a: axial, circumferential, and radial. The axial direction of the receiving cavity 100a can be understood as the direction in which the geometric center line of the receiving cavity 100a lies, or the direction in which the atomizing matrix 400 is inserted or removed relative to the receiving cavity 100a. The circumferential direction of the receiving cavity 100a can be understood as the direction around the geometric center line of the receiving cavity 100a, and the radial direction of the receiving cavity 100a can be understood as the direction perpendicular to the geometric center line of the receiving cavity 100a.

[0040] For example, please refer to Figures 2 to 5 The substrate 110 is generally tubular in shape, including an inner tube 111 and an outer tube 112. The tubular space of the inner tube 111 serves as a receiving cavity 100a. The inner tube 111 is inserted into the outer tube 112. The peripheral walls of the inner tube 111 and the peripheral walls of the outer tube 112 are radially spaced from each other in the receiving cavity 100a. The inner tube 111 and the outer tube 112 are sealed together at their two ends in the axial direction of the receiving cavity 100a (e.g., integral molding, welding, sealing, etc.). In this way, a closed cavity 100b independent of the receiving cavity 100a can be formed between the inner tube 111 and the outer tube 112. The peripheral walls of the inner tube 111 serve as light-transmitting walls. For example, all or all of the inner tube 111 or its peripheral walls are made of light-transmitting material.

[0041] For example, the substrate 110 may also adopt other suitable structural forms. For example, the substrate 110 is generally cup-shaped, the bottom of the cup of the substrate 110 is provided with a vent structure that connects to the air intake channel 200a, the cup space of the substrate 110 serves as a receiving cavity 100a, and the closed cavity 100b is formed in the cup wall of the substrate 110.

[0042] Please see Figure 2 , Figure 3 and Figure 5The heating component includes multiple light and heat sources 120 electrically connected in parallel to the power supply component 300, such as two, three, four or more; the multiple light and heat sources 120 are evenly arranged in the circumference of the receiving cavity 100a in the closed cavity 100b, that is, the multiple light and heat sources 120 are evenly distributed around the receiving cavity 100a in the closed cavity 100b.

[0043] The photothermal source 120 employs an electroluminescent element capable of generating or emitting visible and infrared light. For example, the photothermal source 120 may include photothermal filaments such as tungsten wire, molybdenum wire, tantalum wire, iridium wire, platinum wire, and rhenium wire. The visible and infrared light emitted by the photothermal source 120 can irradiate the atomized matrix 400 housed in the receiving cavity 100a after passing through the light-transmitting wall (specifically, the peripheral wall of the inner tube 111), thereby heating the atomized matrix 400 and generating a usable aerosol.

[0044] In other embodiments, the photothermal source 120 may also be a lamp or light-emitting element capable of emitting light including visible light and infrared light, which will not be described in detail here.

[0045] On the one hand, based on the electrical parallel relationship between multiple photothermal sources 120 and the structural characteristics of the uniform arrangement around the containment cavity 100a (i.e., the atomizing matrix 400), the multiple photothermal sources 120 do not interfere with each other. This means that each photothermal source 120 can obtain a stable current, ensuring the consistency of the photothermal effect of multiple photothermal sources 120, thereby achieving sufficient and uniform circumferential heating of the atomizing matrix 400 and improving the heating atomization effect.

[0046] On the other hand, compared with existing circumferential heating technologies (such as circumferential thick film printing technology), the heating element 100 in this application adopts a simpler photothermal method to construct the structural architecture, and the manufacturing process is simpler and the process requirements are lower, which helps to reduce the manufacturing and application costs of the heating element 100. Moreover, the structural parts of the heating element 100 that contact the atomizing matrix 400 (i.e., the light-transmitting wall or the inner tube 111) are made of light-transmitting materials (such as quartz), so there is no problem of contamination of the atomizing matrix 400 or aerosol due to the release and migration of metal ions, thereby effectively ensuring the quality and taste of the aerosol.

[0047] It should be noted that the description of the atomizing matrix 400 in this article is only for the purpose of more clearly and thoroughly understanding the structure, implementation principle, etc. of the atomizing device or heating element 100; it is understood that the atomizing matrix 400 does not constitute a limitation on the atomizing device or heating element 100.

[0048] Those skilled in the art will also understand that common atomizing matrix 400 can be simply an aerosol-generating matrix with a stable or fixed outline shape (e.g., columnar), or it can be a structure (e.g., a columnar structure) formed by packaging and shaping the aerosol-generating matrix through packaging materials (e.g., polyamide ester materials, paper materials for cigarettes, etc.). For example, a typical atomizing matrix 400 (also known as an aerosol-generating product) can be divided along its length into a matrix section, a cooling section, and a filtering section; wherein, the matrix section is formed by shaping the aerosol-generating matrix from medicinal materials, spices, tobacco, etc., through packaging materials. By inserting the matrix section into an atomizing device (e.g., a heating element 100), aerosols can be generated by heating the aerosol-generating matrix in the matrix section.

[0049] As previously mentioned, in some embodiments, the photothermal source 120 includes a photothermal filament, for example, a tungsten filament with a purity of 99% or higher. Please refer to [link to documentation]. Figures 2 to 4 The photothermal filaments extend along the axial direction of the receiving cavity 100a and are arranged in the closed cavity 100b. The photothermal filaments of multiple photothermal sources 120 are electrically connected in parallel through electrode leads 130. For example, three photothermal filaments are evenly distributed around the receiving cavity 100a in the closed cavity 100b and are connected in parallel through electrode leads 130.

[0050] Therefore, by arranging the photothermal filament along the axial direction of the receiving cavity 100a, the photothermal filament can adapt to the axial length of the receiving cavity 100a or the closed cavity 100b, and thus adapt to the length of the atomizing matrix 400 within the receiving cavity 100a. The light emitted by multiple evenly distributed photothermal filaments can directly irradiate and uniformly heat the atomizing matrix 400, achieving a 360-degree circumferential heating effect. Furthermore, by leading the electrode lead 130 out from the closed cavity 100b, it is not only convenient to establish an electrical connection between the photothermal source 120 and the power supply component 300, but also to provide structural support for confining and fixing the photothermal filament within the closed cavity 100b.

[0051] In some embodiments, please refer to Figure 5 The photothermal filaments can also be arranged to extend circumferentially along the housing cavity 100a, and the photothermal filaments of multiple photothermal sources 120 are evenly spaced circumferentially in the housing cavity 100a, so that the light emitted by the photothermal filaments can also be used to achieve a 360-degree circumferential heating effect.

[0052] In specific implementation, each photothermal source 120 may include multiple electrically parallel photothermal filaments, and the multiple photothermal filaments of each photothermal source 120 are arranged side by side in the axial direction of the receiving cavity 100a, so that the photothermal heating area of ​​the heating element 100 can be adapted to the length dimension of the atomizing matrix 400 in the receiving cavity 100a, thereby improving the heating effect.

[0053] Based on this, by arranging the photothermal filament in the enclosed cavity 100b along the axial or circumferential direction of the receiving cavity 100a, a heating element with different heating structure can be formed, and excessive structural interference processing of the photothermal filament can be avoided. This allows the photothermal filament to be installed in the enclosed cavity 100b in a more natural original form, thereby effectively reducing the process complexity and processing cost of the heating element 100.

[0054] In some embodiments, please refer to Figure 6 and Figure 7 The heating element is configured to have multiple photothermal components arranged side-by-side along the axial direction of the receiving cavity 100a within the enclosed cavity 100b. At least two of the heating elements are configured to emit light independently of each other. For example, two heating elements are configured, each including three photothermal filaments connected in parallel via electrode leads 130 and evenly distributed around the receiving cavity 100a. The electrode leads 130 of each heating element are electrically connected to the power supply component 300. For instance, the electrode lead 130 of one heating element is led out from one end of the base 110 along the axial direction of the receiving cavity 100a and electrically connected to the power supply component 300, while the electrode lead 130 of the other heating element is led out from the other end of the base 110 along the axial direction of the receiving cavity 100a and electrically connected to the power supply component 300.

[0055] Therefore, by using multiple heating components arranged side by side along the axial direction of the receiving cavity 110b, the heating element 100 is equivalent to being divided into multiple heating zones or temperature fields that can generate heat independently. By selectively controlling one or more of the multiple heating components to emit light using the power supply component 300, the atomizing matrix 400 can be heated in a partitioned or segmented circumferential uniform manner. This can effectively improve the continuity and consistency of aerosol generation and avoid problems such as large aerosol generation in the early stage of heating and insufficient aerosol generation in the middle and later stages of heating.

[0056] In some embodiments, the enclosed cavity 100b has a vacuum degree, that is, the enclosed cavity 100b is a vacuum cavity in which the internal pressure is lower than the external pressure (e.g., the atmospheric pressure of the external environment of the heating element 100). By providing a vacuum environment for the photothermal source (specifically, a photothermal filament such as a tungsten filament), oxidation reaction can be effectively prevented, extending the service life of the photothermal filament. It can also enable the photothermal filament to emit light and heat more stably, thereby improving the heating efficiency of the heating element 100.

[0057] In some embodiments, the sealed cavity 100b may also be filled with an inert gas, such as nitrogen or argon in a vacuum sealed cavity 100b; this can prevent oxidation and enhance the luminous efficacy or brightness of the photothermal filament, thereby enhancing the heating effect of the heating element 100.

[0058] In some embodiments, please refer to Figures 2 to 4 The substrate 110 is mainly made of quartz material, that is, both the inner tube 111 and the outer tube 112 are made of quartz material. The inner tube 111 and the outer tube 112 can be integrally formed. The two ends of the inner tube 111 and the outer tube 112 in the axial direction of the receiving cavity 100a can also be sealed by welding or by bonding with sealant, thereby forming a closed cavity 100b between the inner tube 111 and the outer tube 112. At the same time, the peripheral sidewalls (e.g., the outer surface or the inner surface) of the outer tube 112 or the surfaces of the other sidewalls of the substrate 110 except for the light-transmitting wall (i.e. the peripheral sidewall of the inner tube 111) are covered with a light-reflecting layer 140 with high reflectivity to light and heat.

[0059] On the one hand, based on the characteristics of quartz, such as high temperature resistance, high light transmittance, and insulation, it can not only improve the light transmission effect and avoid the problem of aerosol pollution caused by the release and migration of metal ions, but also make the heating element 100 a simpler process to reduce the manufacturing and application cost of the heating element 100.

[0060] On the other hand, by using the light-reflecting layer 140 to reflect the light emitted by the heat source 120 towards the receiving cavity 100a, light leakage can be prevented, allowing visible light and infrared light to be concentrated within the receiving cavity 100a. This enhances the heating efficiency of the heating element 100 by improving light utilization. For example, when a tungsten filament is energized, it emits light that directly irradiates the atomized matrix 400 within the receiving cavity 110a. Simultaneously, some visible light and infrared light, after being reflected by the light-reflecting layer 140, will return to the receiving cavity 110a to irradiate the atomized matrix 400, thus achieving better light and energy focusing effects.

[0061] In other embodiments, the inner tube 111 and the outer tube 112 may also be made of high-temperature resistant and light-transmitting materials such as glass, transparent ceramics, and mica. Alternatively, the inner tube 111 and the outer tube 112 may be made of different materials. For example, the inner tube 111 may be made of a high-temperature resistant and light-transmitting material such as quartz, while the outer tube 112 may be made of a material with insulating properties. The inner tube 111 and the outer tube 112 may be sealed together at their two ends in the axial direction of the receiving cavity 100a by means of welding, sealing, or other methods. Depending on the material properties of the outer tube 112, the light-reflecting layer 140 may be selectively provided or omitted. Further details are omitted here.

[0062] It should be noted that, Figure 2 The solid dots in the image represent the photothermal filament, and the bold solid lines represent electrode leads 130. Figure 5 The wavy curve in the image represents the photothermal filament, and the solid dots represent the connection points between the photothermal filament and the electrode lead 130. Figure 3 , Figure 4 , Figure 6 and Figure 7The dashed lines in the diagram represent the portion of the photothermal filament or electrode lead 130 that is hidden by the light-transmitting wall.

[0063] 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, characterized in that, include: The substrate has a receiving cavity for accommodating the atomized matrix and a closed cavity surrounding the receiving cavity, the receiving cavity and the closed cavity being independent of each other, and the side wall of the substrate located between the receiving cavity and the closed cavity being a light-transmitting wall; as well as The heating component includes multiple photothermal sources connected in parallel, which are evenly distributed around the receiving cavity within the enclosed cavity; light emitted by the photothermal sources passes through the light-transmitting wall and irradiates the atomizing matrix to heat the atomizing matrix and generate an aerosol; wherein the light emitted by the photothermal sources includes visible light and infrared light.

2. The heating element as described in claim 1, characterized in that, The photothermal source includes a photothermal filament, which is at least one of tungsten, molybdenum, tantalum, iridium, platinum, and rhenium filaments; wherein, the photothermal filaments of multiple photothermal sources are electrically connected in parallel through electrode leads, which are led out from the enclosed cavity to connect to the power supply component.

3. The heating element as described in claim 2, characterized in that, The photothermal filament extends axially within the enclosed cavity, or extends circumferentially within the enclosed cavity.

4. The heating element as described in claim 2, characterized in that, The internal pressure of the sealed cavity is less than the external pressure of the sealed cavity, and / or the sealed cavity is filled with an inert gas.

5. The heating element as described in claim 1, characterized in that, The number of heating components is set to multiple, and the multiple heating components are arranged side by side in the axial direction of the receiving cavity, and the photothermal source of at least two of the multiple heating components emits light independently of each other.

6. The heating element as described in any one of claims 1-5, characterized in that, The base includes an inner tube and an outer tube. The tube space of the inner tube serves as the receiving cavity, and the peripheral sidewall of the inner tube serves as the light-transmitting wall. The inner tube is disposed inside the outer tube and spaced apart from it. The outer tube and the inner tube are sealed together at both ends in the axial direction of the receiving cavity to form the closed cavity between the inner tube and the outer tube.

7. The heating element as described in claim 6, characterized in that, The peripheral wall of the outer tube is covered with a light-reflecting layer, which is used to reflect the light emitted by the photothermal source toward the receiving cavity.

8. The heating element as described in claim 6, characterized in that, The inner tube is made of quartz material, or both the inner tube and the outer tube are made of quartz material.

9. The heating element as described in claim 6, characterized in that, The inner tube and the outer tube are integrally formed.

10. An atomizing device, characterized in that, The device includes a housing assembly, a power supply assembly, and a heating element as described in any one of claims 1-9. The housing assembly has an air inlet channel and an air outlet channel. The heating element is disposed inside the housing assembly. The receiving cavity communicates between the air inlet channel and the air outlet channel. The photothermal source is electrically connected to the power supply assembly.

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