WO2023216701A1

WO2023216701A1 - Heating assembly and aerosol generation device

Info

Publication number: WO2023216701A1
Application number: PCT/CN2023/080560
Authority: WO
Inventors: 黄鹏飞; 郭玉; 郭聪慧; 刘小力; 黄祖富; 冼小毅; 周亚林
Original assignee: 深圳麦时科技有限公司
Priority date: 2022-05-11
Filing date: 2023-03-09
Publication date: 2023-11-16
Also published as: CN114886165A

Abstract

The present application provides a heating assembly and an aerosol generation device. The heating assembly comprises a base body, a radiation heating layer and a conductive coil. The base body is in the shape of a hollow tube; the radiation heating layer is arranged on the side where the inner wall surface of the base body is located, and is used for radiating rays when being heated; the conductive coil is arranged around the base body and is used for generating a varying magnetic field during power-on so as to heat the radiation heating layer. According to the heating assembly, the heating rate and the vapor outflow rate of an aerosol generation product are effectively improved, and sufficient vapor outflow amount is guaranteed.

Description

Heating components and aerosol generating devices

Cross-references to related applications

This application claims priority based on Chinese patent application 2022105157282 filed on May 11, 2022, the entire contents of which are incorporated herein by reference.

【Technical field】

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

【Background technique】

Low-temperature baking aerosol generating devices have attracted more and more attention and favor due to their advantages such as safety, convenience, health, and environmental protection.

Existing aerosol generating devices are used to heat and atomize aerosol-generating products because infrared heating has good heating uniformity and is easy to implement. However, the existing aerosol generating device has a slow mist emitting speed, low heat utilization rate and low heating efficiency.

[Content of the invention]

This application provides a heating component and an aerosol generating device, aiming to solve the problems of slow mist emitting speed, low heat utilization rate and low heating efficiency of existing aerosol generating devices.

In order to solve the above technical problems, one technical solution adopted by this application is to provide a heating component. The heating component includes: a base body, which is in the shape of a hollow tube; a radiation heating layer, which is arranged on the side of the inner wall of the base body, for radiating rays when heated; a conductive coil, which is arranged around the base body and is used for generating electricity when energized. Vary the magnetic field to heat the radiant heating layer.

Among them, the changing magnetic field generated when the conductive coil is energized causes the base body to generate eddy currents and heat up to heat the radiation heating layer.

Wherein, the base is a metal base material.

Wherein, the heating component further includes an insulating layer, the insulating layer is arranged between the outer wall surface of the base body and the conductive coil, and the conductive coil is arranged around the insulating layer.

Among them, the changing magnetic field generated when the conductive coil is energized causes the radiation heating layer to generate eddy currents and be heated.

The base is an insulating base material, and the radiation heating layer is doped with metal particles.

Wherein, the heating component further includes a reflective layer, which is arranged around the outside of the radiation heating layer and used to reflect rays radiated by the radiation heating layer.

Wherein, the reflective layer is stacked on the side of the conductive coil away from the base body and is disposed around the conductive coil to reflect the heating rays emitted by the radiation heating layer.

Wherein, the heating component further includes a protective layer, which is stacked on the side of the radiation heating layer facing away from the base.

Wherein, the conductive coil is evenly wound around the outer wall surface of the base body; or the conductive coil includes a connected first line segment and a second line segment, the first line segment and the second line segment are evenly wound around the outer wall surface of the base body, wherein the first line segment The winding density is greater than the winding density of the second line segment; or the conductive coil includes a first conductor and a second conductor that are spaced apart, the first conductor and the second conductor are evenly wound on the outer wall of the base body, and the first conductor and the second conductor The conductors are interlaced and wound, wherein the first conductor and the second conductor can be selectively connected.

The conductive coil has a linear resistance temperature coefficient, and the heating component also includes a detection circuit. The detection circuit is used to detect the electrical parameters of the conductive coil to characterize the temperature of the radiation heating layer.

Among them, the radiation heating layer is an infrared layer.

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

Embodiments of the present application provide a heating component and an aerosol generating device. The heating component is provided with a base body to accommodate the aerosol-generating product through the base body. At the same time, by arranging a radiation heating layer on the side where the inner wall surface of the base is located, it radiates rays when it is heated, thereby using the radiated rays to heat and atomize the aerosol-generating product, which can effectively reduce the internal and external stress of the aerosol-generating product. temperature difference, thereby improving the heating uniformity of the aerosol-generating product. Furthermore, by arranging the radiant heating layer on the side where the inner wall surface of the base body is located, the rays radiated by the radiant heating layer can directly heat the aerosol-generating product without penetrating the base body, which not only avoids the risk of the rays penetrating the base body. Attenuation effectively increases the heating rate and fogging rate of aerosol-generating products, ensuring a sufficient amount of fogging; and due to the existence of the matrix, the matrix can be used to block rays from radiating to the outside and reflect them to the interior of the matrix, reducing heat. loss, improving the heating efficiency of the heating component. In addition, by setting up a conductive coil to produce changes in the The magnetic field causes the radiation heating layer to heat up and be excited to radiate heating rays.

[Picture description]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts, among which:

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

Figure 2 is a side wall cross-sectional view of the first embodiment of the heating assembly that generates heat from the base;

Figure 3 is a schematic structural diagram of a conductive coil of a heating assembly provided by an embodiment of the present application;

Figure 4 is a schematic structural diagram of a conductive coil of a heating assembly provided by another embodiment of the present application;

Figure 5 is a schematic structural diagram of a conductive coil of a heating assembly provided by another embodiment of the present application;

Figure 6 is a schematic structural diagram of a conductive coil of a heating assembly provided by yet another embodiment of the present application;

Figure 7 is a side wall cross-sectional view of a second embodiment of a base-heated heating assembly;

Figure 8 is a side wall cross-sectional view of a third embodiment of a base-heated heating assembly;

Figure 9 is a side wall cross-sectional view of a fourth embodiment of a base-heated heating assembly;

Figure 10 is a side wall cross-sectional view of a fifth embodiment of a base-heated heating assembly;

Figure 11 is a side wall cross-sectional view of a sixth embodiment of a base-heated heating assembly;

Figure 12 is a side wall cross-sectional view of the first embodiment of the heating assembly that generates heat from the radiant heating layer;

Figure 13 is a side wall cross-sectional view of a second embodiment of a heating component with a radiant heating layer;

Figure 14 is a side wall cross-sectional view of a third embodiment of a heating component with a radiant heating layer;

Figure 15 is a side wall cross-sectional view of a fourth embodiment of a heating component with a radiant heating layer;

Figure 16 is a side wall cross-sectional view of a fifth embodiment of a heating assembly with a radiant heating layer;

Figure 17 is a side wall cross-sectional view of a sixth embodiment of a heating component with a radiant heating layer;

Figure 18 is a side wall cross-sectional view of a seventh embodiment of a heating assembly with a radiant heating layer;

Figure 19 is a side wall cross-sectional view of an eighth embodiment of a heating component with a radiant heating layer;

Figure 20 is a schematic structural diagram of an aerosol generating device provided by an embodiment of the present application.

【Detailed ways】

The technical solutions in the embodiments of the present application will be clarified below in conjunction with the drawings in the embodiments of the present application. Clearly and completely described, it is obvious that 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 Figure 1, which is a schematic structural diagram of a heating assembly provided by an embodiment of the present application. In the embodiment of the present application, a heating component 30 is provided, which is used to heat and atomize the aerosol-generating product when energized to form an aerosol. The heating component 30 can be used in different fields, such as medical treatment, beauty, recreational smoking and other fields. 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.

As shown in FIG. 1 , the heating component 30 specifically includes a base 31 , a radiation heating layer 32 and a conductive coil 33 . Among them, the base body 31 is in the shape of a hollow tube, and its inner wall is surrounded to form a receiving cavity, and the aerosol-generating product is removably received in the receiving cavity. The radiant heating layer 32 is disposed on the side where the inner wall surface of the base 31 is located, that is, the radiant heating layer 32 is located inside the base 31 and is used to radiate rays when heated to heat the aerosol-generating product; the conductive coil 33 surrounds the base 31 It is configured to generate a changing magnetic field when energized to heat the radiation heating layer 32, so that the radiation heating layer 32 heats up and is excited to radiate rays.

In one embodiment, as shown in Figures 2-6, the base 31 is made of a material that can induce a changing magnetic field to generate eddy currents and generate heat; it induces magnetic field changes in the high-frequency changing magnetic field generated by the conductive coil 33 to generate eddy currents and generate heat. , thereby converting electrical energy into thermal energy, and then transferring the heat to the radiant heating layer 32 through thermal conduction, so that the radiant heating layer 32 heats up and is excited, and then radiates heating rays to heat the aerosol-generating product. The base 31 may be a metal base material, such as pure iron, stainless steel, silicon steel, carbon steel, iron alloy and other ferrite base materials.

Among them, the inner wall surface of the base body 31 can also be provided with a mirror effect, for example, the inner wall surface of the base body 31 is polished, so that when the heating component 30 is working, the inner wall surface of the base body 31 can also reflect the heating rays emitted to the inner wall surface. The aerosol-generating product is heated and atomized inside the base 31 , which effectively reduces heat loss and improves the heating efficiency of the heating component 30 . For example, the base 31 can be made of metal such as pure iron or stainless steel, so that the inner wall surface of the base 31 can be polished to have a mirror effect.

Please continue to refer to FIG. 2 , which is a side wall cross-sectional view of the first embodiment of the heating component that generates heat from the base. In this embodiment, the radiation heating layer 32 is stacked on the inner wall surface of the side wall of the base 31 . Of course, in other embodiments, other dielectric layers may also be provided between the radiant heating layer 32 and the base 31, such as a reflective layer 36 or a thermal insulation layer; this application is not limited to this, as long as the radiant heating layer 32 is located on the base. The side where the inner wall is located is sufficient.

In a specific embodiment, the radiation heating layer 32 may be an infrared layer, and the heating rays radiated by the infrared layer when heated are infrared rays. Since infrared rays have strong thermal radiation capabilities, the infrared rays can penetrate the interior of the aerosol-generating product and treat the aerosol-generating product. The entire inside and outside are heated at the same time, which reduces the temperature difference between the inside and outside of aerosol-generating products. Compared with conventional resistance heating or electromagnetic heating, infrared heating has better heating uniformity and can avoid aerosols caused by local high temperatures. The product is burned. The radiation heating layer 32 may be a far-infrared ceramic layer, a metal layer or a conductive carbon layer, which may be selected according to needs. In a specific embodiment, the radiant heating layer 32 is an infrared ceramic coating, and the radiant heating layer 32 radiates radiation when working. Emit infrared rays to heat aerosol to produce products. The wavelength of infrared heating is 2.5um ~ 20um. Due to the characteristics of heated aerosol-generated products, the heating temperature usually reaches about 350℃, and the extreme value of energy radiation is mainly in the 3~5um band.

In a specific embodiment, the radiant heating layer 32 may be formed on the inner wall surface of the side wall of the base body 31 by silk screen printing, coating, sputtering, printing or tape casting. The shape, area, and thickness of the radiant heating layer 32 can be set according to actual needs; for example, the shape, area, and thickness of the radiant heating layer 32 can be set according to a preset plan of the temperature field of the heating component 30 . For example, the shape of the radiant heating layer 32 can be a continuous film, a porous mesh or a strip, etc. Specifically, it can be made into a film-like surface to generate heat. It can be understood that in order to make the heating effect of the radiant heating layer 32 more uniform, its thickness everywhere on the base 31 is usually the same; of course, for some special needs, the thickness of the radiant heating layer 32 everywhere on the base 31 may also vary. It can be set to be different, so that the infrared energy density of different areas of the heating component 30 is different, that is, when the heating component 30 is powered on, the heat density of different areas is different to form different temperature fields.

In this embodiment, as shown in Figure 2, the heating component 30 also includes an insulating layer 34. The insulating layer 34 is disposed on the outer wall surface of the side wall of the base 31. The conductive coil 33 is specifically arranged around the surface of the insulating layer 34 away from the base 31. This is to avoid short circuit between the conductive coil 33 and the base 31 when the heating component 30 is powered on. The material of the insulating layer 34 can be ceramic, quartz glass, mica and other high-temperature resistant insulating materials; it can be formed on the outer wall surface of the base 31 by silk screen printing, coating, sputtering, printing or tape casting.

Specifically, the conductive coil 33 can be made of conductive metal, such as copper, aluminum, silver, etc. In this embodiment, it is preferred that the conductive coil 33 is a metal coil made of copper. The conductive coil 33 can be an enameled wire wound around the outer wall of the base 31; it can be understood that in this embodiment, the paint outside the wire is an insulating material to prevent short circuit problems between the coils. Of course, the conductive coil 33 can also be deposited on the outer wall surface of the base body 31 by silk screen printing, coating, sputtering, printing, etc.

The inventor of the present application has discovered through extensive research that when the conductive coil 33 is energized, it will generate a certain amount of heat, and this part of the heat is usually easily ignored and leads to heat loss; in order to avoid this part of the heat loss, the conductive coil 33 can be reduced as much as possible. Heat is generated, and at the same time, the heat generated by the conductive coil 33 can be conducted to the base 31 or the radiation heating layer 32 . Specifically, the conductive coil 33 is wound around the base 31. When its winding density remains unchanged, that is, when the number of turns of the conductive coil 33 per unit length remains unchanged, the conductive coil 33 is electrically conductive. The smaller the volume of the coil 33, the thinner the conductive coil 33, and the smaller its cross-sectional area, the smaller the current flowing through it; according to the heat calculation formula: Q=UIt, where Q is the heat generated by the resistance, and U is The voltage across the resistor, I is the current flowing through the resistor, and t is the time. It can be seen that at this time, the conductive coil 33 itself generates less heat; that is, under the premise that the winding density of the conductive coil 33 remains unchanged, the conductive coil 33 The smaller the volume, the less heat it generates. In specific embodiments, for example, the conductive coil 33 formed on the base 31 by silk screen, sputtering, printing, etc. has a smaller volume than the conductive coil 33 formed by winding a metal wire around the base 31, and can be used to a certain extent. Improve the self-heating problem of the conductive coil 33. At the same time, since the conductive coil 33 is disposed on the base 31, the heat generated by the conductive coil 33 is more easily conducted to the base 31 and utilized. Therefore, in specific embodiments, it is preferable to use silk printing to form the conductive coil 33 on the base 31. The embodiments of this application take this as an example. The conductive coil 33 can be 33a/33b/33c involved in the following embodiments.

Please refer to FIG. 3 , which is a schematic structural diagram of the conductive coil of the heating component 30 provided by an embodiment of the present application. In a specific embodiment, the conductive coil 33a is evenly wound on the outer wall surface of the base 31, that is, the winding density is the same everywhere on the base 31 corresponding to the area where the conductive coil 33a is located, so that the conductive coil 33a generates a uniformly changing magnetic field everywhere. As a result, the base 31 or the radiation heating layer 32 induces a uniformly changing magnetic field to generate eddy currents, so that the temperature rise rate is the same everywhere. That is, the temperature of the base 31 or the radiation heating layer 32 corresponding to the area where the conductive coil 33a is located is the same. This allows the heating component 30 to heat the aerosol-generating product with better uniformity. Since the winding density of the conductive coil 33a is positively correlated with the heating rate, the temperature field of the heating component can be preset by simply setting the winding density of the conductive coil to achieve the best preheating effect, making the technical solution relatively simple. No additional components are required.

In another specific embodiment, please refer to FIG. 4 , which is a schematic structural diagram of a conductive coil of a heating assembly provided by another embodiment of the present application. The conductive coil 33b includes a connected first line segment 331b and a second line segment 332b. The first line segment 331b and the second line segment 332b are evenly wound on the outer wall surface of the base 31, and the winding density of the first line segment 331b is greater than that of the second line segment. The convolution density of 332b. It is easy to understand that when the conductive coil 33b is energized, the intensity of the changing magnetic field generated by the first line segment 331b is greater than the intensity of the changing magnetic field generated by the second line segment 332b, so that the base 31 or the radiation heating layer 32 corresponds to the location of the first line segment 331b. The heating rate of the area is greater than the heating rate of the area where the corresponding second line segment 332b is located, thereby achieving rapid heating of the local area of the heating component 30, so that the heating component 30 can first heat the local aerosol-generating product in the initial stage of heating, effectively ensuring the heating Sufficient amount of mist in the initial stage. Therefore, you can choose to The first line segment 331b is provided on the corresponding area of the heating component 30 that needs to be quickly heated.

Specifically, the winding density of the first line segment 331 b and the second line segment 332 b as well as their position and area on the base 31 can be set according to actual needs to meet the heating requirements of the heating component 30 . Of course, the conductive coil 33b can also include a third line segment, a fourth line segment, a fifth line segment, etc. The winding density of the third line segment, the fourth line segment, the fifth line segment, etc., as well as their position and area on the base 31 can be determined as needed. Through the setting, gradient heating of the heating component 30 can also be achieved, so that the heating component 30 can ensure a suitable amount of mist and a better suction experience during the entire heating process.

In another specific embodiment, please refer to Figures 5-6. Figure 5 is a schematic structural diagram of a conductive coil of a heating component provided by yet another embodiment of the present application. Figure 6 is a schematic diagram of a conductive coil of a heating component provided by yet another embodiment of the present application. Schematic diagram of the coil structure. The conductive coil 33c includes spaced apart first conductors 331c and second conductors 332c. The first conductors 331c and the second conductors 332c are evenly wound on the outer wall surface of the base 31, and the first conductors 331c and the second conductors 332c are interlacedly wound, wherein The first conductive line 331c and the second conductive line 332c may be selectively conductive. Specifically, the first conductor 331c and the second conductor 332c are interlacedly wound on the base 31 at intervals, and the winding density of the first conductor 331c is greater than the winding density of the second conductor 332c. Based on the above, it can be understood that when the heating component 30 is energized, if the first wire 331c is selected to be connected, due to the high winding density of the first wire 331c and the intensity of the changing magnetic field generated by it is large, the base 31 or the radiation heating layer 32 will The heating rate is high; if the second wire 332c is selected to be connected, since the winding density of the second wire 332c is small and the intensity of the changing magnetic field generated by it is small, the heating rate of the base 31 or the radiation heating layer 32 is small. It is easy to understand that when the heating component 30 is energized and working, in the initial stage of heating, due to the need for rapid fogging, it needs to be heated quickly. The first wire 331c with a high winding density can be selectively connected. After the heat accumulation does not require too much heat, at this time, the second wire 332c with a small winding density can be selectively connected, so that the heating component 30 can ensure sufficient mist output during the heating process while also saving energy; this setting method It can be understood that the heating component 30 can be controlled to turn on different heating gears during different heating periods. In the early stage of heating, it is controlled to be turned on to the first stage, that is, the first wire 331c is turned on. In the middle and later stages of heating, it is controlled to be turned on. The second gear is to connect the second wire 332c. Of course, in order to meet the setting requirements for a more precise temperature field of the heating component 30, the conductive coil 33c can also include a third wire, a fourth wire, etc., and correspondingly, the heating gear can also be set to a third gear, a fourth gear, etc. More gears enable gradient heating of the heating component 30, thereby ensuring a suitable amount of mist and a better suction experience during the entire heating process.

In specific embodiments, the conductive coils 33/33a/33b/33c may also have linear temperature coefficient of resistance (TCR) characteristics, allowing them to serve as temperature sensors. Specifically, the heating component 30 also includes a detection circuit 37. The detection circuit 37 is electrically connected to the conductive coil 33/33a/33b/33c to detect the electrical parameters of the conductive coil 33/33a/33b/33c. The electrical parameters can be specifically: The current value or resistance value then characterizes the heating temperature of the radiation heating layer 32 according to the detected electrical parameters and TCR characteristics. It is easy to understand that because the conductive coil 33/33a/33b/33c has TCR characteristics, the resistance value of the conductive coil 33/33a/33b/33c has a monotonic one-to-one correspondence with its own temperature value, that is, each resistance value corresponds to a different temperature value, and the resistance value of the conductive coil 33/33a/33b/33c increases with the increase of its temperature value, or the resistance value decreases with the increase of its temperature value; usually, the conductive coil 33/33a/33b The voltage across /33c is constant. According to Ohm's law, the current value flowing through the conductive coil 33/33a/33b/33c is inversely proportional to its resistance value. Therefore, the detection circuit 37 can detect the conductive coil 33/33a/33b/ The current value or resistance value of 33c represents the temperature value of the heating component 30, thereby realizing the temperature measurement function of the heating component 30 to regulate the temperature field of the heating component 30 according to the temperature value to ensure a more balanced amount of mist during the heating process. Compared with the existing technology that requires additional temperature measuring components such as temperature sensors, the heating component 30 does not need to add additional temperature sensing devices such as temperature sensors, thereby making the heating component 30 smaller in size, and the volume of its product is also smaller. Small, such as aerosol-generating devices, are smaller in size, making them more convenient to carry and use.

Please refer to FIG. 7 , which is a side wall cross-sectional view of a second embodiment of a heating component that generates heat from a base. The heating component 30 further includes a reflective layer 36 , which is disposed around the outside of the radiation heating layer 32 and used to reflect rays radiated by the radiation heating layer 32 . Specifically, when the heating component 30 is powered on and heated, the radiant heating layer 32 not only radiates rays to the receiving cavity in the base 31 to heat and atomize the aerosol-generating product, but also radiates rays to the outside of the base 31 and is disposed on the radiant heating layer 32 The outer reflective layer 36 can prevent part of the rays from being emitted to the outside of the base 31 and reflect the part of the rays back to the receiving cavity inside the base 31 to heat and atomize the aerosol-generating product, thereby reducing the heat of the heating component 30 loss, improving the heating efficiency of the heating component 30.

The reflective layer 36 can be made of a material with low infrared emissivity, such as aluminum, gold, silver and other metal materials or high-temperature resistant polymer materials such as PI film. Generally, the reflective layer 36 of metal material has better reflection effect and high temperature resistance effect. Well, the reflective layer 36 is generally made of metal. In order to further improve the reflection effect, the reflective layer 36 can also have a mirror effect, so that all the radiated rays are reflected back into the base 31 , thereby reducing the heat loss of the heating component 30 and increasing the heating efficiency. The reflective layer 36 can be specifically coated, The film is formed on the base 31 by sputtering, printing or metal plating.

In a specific embodiment, please refer to FIG. 7 , the reflective layer 36 can be provided around the side of the conductive coil 33 / 33 a / 33 b / 33 c away from the base 31 to prevent the heating rays radiated by the radiant heating layer 32 from going outside the heating component 30 The radiation results in heat loss, and this part of the heating ray is reflected back to the receiving cavity in the base 31 . Please refer to Figure 8. It should be noted that if the reflective layer 36 is made of metal, a short circuit problem may easily occur between the conductive coil 33/33a/33b/33c and the reflective layer 36 when the conductive coil 33/33a/33b/33c is energized. Therefore, it is also necessary to connect the conductive coil 33/33a/33b/ An insulating layer 34 is also provided between 33c and the reflective layer 36 to ensure the insulation between the conductive coil 33/33a/33b/33c and the reflective layer 36. The specific materials and processes of the insulating layer 34 are the same as above and will not be repeated here. Repeat.

In another specific embodiment, please refer to FIG. 9 , which is a schematic structural diagram of a conductive coil of a heating assembly provided by yet another embodiment of the present application. In this embodiment, the reflective layer 36 is disposed on the outer wall surface of the side wall of the base 31 and is located between the base 31 and the insulating layer 34 .

In yet another specific embodiment, please refer to FIG. 10 , which is a schematic structural diagram of a conductive coil of a heating assembly provided by yet another embodiment of the present application. In this embodiment, the reflective layer 36 can also be disposed on a side surface of the base 31 close to the radiation heating layer 32 , and is located between the base 31 and the radiation heating layer 32 , so that the outwardly radiating heating rays do not pass through the base 31 . The direct reflection by the reflective layer 36 back to the receiving cavity in the base 31 further shortens the path of the heating rays radiated outwardly by the radiant heating layer 32, thereby reducing the attenuation of the heating rays and further improving the heating efficiency.

Furthermore, since the radiation heating layer 32 is disposed on the inner wall of the base 31 , it is easily scratched or stained by the aerosol-generating products contained in the base 31 . To this end, please refer to Figure 11. Figure 11 is a side wall cross-sectional view of a sixth embodiment of a base-heated heating component; in this embodiment, the heating component 30 also includes a protective layer 35, which is stacked on the radiant heating element. The side of the layer 32 facing away from the base 31, and the protective layer 35 completely covers the radiant heating layer 32 to prevent the radiant heating layer 32 from contacting the aerosol-generating product, causing the radiant heating layer 32 to be scratched or stained by the aerosol-generating product. problem occurs.

In this embodiment, the protective layer 35 can be an infrared-transmissive high-temperature-resistant material, such as transparent ceramic enamel, infrared-transparent glass, etc., which can not only protect the radiation heating layer 32 from being scratched or stained, but also make the heating rays transparent. However, the heating effect of the heating component 30 will not be affected.

It should be noted that in the above embodiment, the radiant heating layer 32 itself does not self-heat, but the changing magnetic field generated by the conductive coil 33/33a/33b/33c when energized causes the base 31 to generate eddy currents to heat up, and then the heat is transferred through thermal conduction. is transferred to the radiation heating layer 32, thereby causing the radiation heating layer 32 to heat up and be excited, The aerosol-generating article is heated and atomized with radiation rays.

In another embodiment, as shown in Figures 12-19, Figures 12-19 are side wall cross-sectional views of an embodiment of a heating component that generates heat from a radiant heating layer. Different from the above embodiment, the radiation heating layer 32 is doped with metal particles; the conductive coil 33/33a/33b/33c generates a changing magnetic field when energized, and the metal particles in the radiation heating layer 32 sense the changing magnetic field and generate The eddy current increases the temperature, causing the radiation heating layer 32 to be excited, so that the radiation heating rays heat and atomize the aerosol-generating product. The radiation heating layer 32 contains metal particles, and the metal particles may specifically be ferrite metal particles, such as pure iron particles, stainless steel particles, carbon steel particles, silicon steel particles, or iron alloy particles.

In this embodiment, please refer to FIG. 12 , which is a side wall cross-sectional view of the first embodiment of the heating component that generates heat from the radiant heating layer. The base 31 can be made of insulating material, such as ceramic, quartz glass, mica and other high-temperature resistant insulating materials. The conductive coils 33/33a/33b/33c are specifically disposed on the outer surface of the side wall of the base 31; the following embodiments take this as an example. It can be understood that in this embodiment, the insulating base 31 is not used as a heat conductive device, but is mainly used to support the radiant heating layer 32 and the conductive coils 33/33a/33b/33c, and to accommodate aerosol-generating products.

Of course, when the conductive coils 33/33a/33b/33c are disposed on the outer surface of the side wall of the base 31, the base 31 can also be made of a material that can induce a changing magnetic field to generate eddy currents and generate heat; at this time, the base 31 interacts with the radiation The heating layer 32 is in a changing magnetic field and generates eddy currents to heat up at the same time, thereby improving the heating efficiency. For the specific arrangement of the conductive coil 33 corresponding to the specific embodiment, please refer to the arrangement of the conductive coil in the embodiment of FIGS. 3-6 mentioned above.

Of course, in other embodiments, the conductive coil 33 can also be disposed inside the base 31 . In order to prevent the conductive coil 33 from being electrically connected to the radiant heating layer 32 and causing a short circuit problem, further connections can be made between the conductive coil 33 and the radiant heating layer 32 . An insulating layer 34 is provided, and the specific arrangement method may refer to the above-mentioned arrangement method of the insulating layer 34, which will not be described again here. For example, an insulating layer can be provided between the conductive coil 33/33a/33b/33c and the radiation heating layer 32 and between the conductive coil 33/33a/33b/33c and the base 31 to prevent the conductive coil 33/33a/33b/ A short circuit problem occurs between 33c and the radiant heating layer 32 or the base 31, causing the heating component 30 to fail to work properly. In this specific embodiment, the base 31 may be insulating or conductive, and is not limited thereto.

Research has found that the closer the distance between the conductive coil 33/33a/33b/33c and the magnetic induction element, the easier it is for the heat generated by the conductive coil 33/33a/33b/33c itself to be absorbed by the magnetic induction element and heat up. This part of the heat The utilization rate is also higher. It should be noted here that the magnetic induction element here is an element that can induce a changing magnetic field to generate eddy currents and heat up; it is easy to understand that the base 31 of the metal substrate or the radiation heating layer 32 doped with metal particles in the above embodiment is It is the magnetic induction element in the embodiment of the present application. For example, when the radiation heating layer 32 is used as a magnetic induction element, the smaller the thickness of the base 31, the closer the distance between the conductive coil 33/33a/33b/33c and the radiation heating layer 32, and the conductive coil 33/33a/33b/33c itself generates The easier it is for heat to be absorbed by the radiation heating layer 32 to raise the temperature, the higher the utilization rate of this part of heat; therefore, the thickness of the base 31 can be set as small as possible while meeting other requirements.

In one embodiment, please refer to FIG. 20 , which is a schematic structural diagram of an aerosol generating device according to an embodiment of the present application. In this embodiment, an aerosol generating device is provided. The aerosol generating device includes the heating component 30 and the power supply component 10 related to the above embodiment. Among them, the heating component 30 is used to heat and atomize the aerosol-generating product when the power is turned on for the user to inhale; specifically, the heating component 30 is in the shape of a hollow tube with a receiving cavity formed inside, and the aerosol-generating product can be removably received. In the containment chamber. The specific structure and function of the heating component 30 can be referred to the relevant description of the heating component 30 provided in the above embodiment, and can achieve the same or similar technical effects, and will not be described again here.

Further, the aerosol generating device also includes a control unit 20, which is electrically connected to the heating component 30 and the power supply component 10; specifically, the control unit 20 is connected to the conductive coils 33/33a/33b/33c of the heating component 30 and the detection circuit. 37 is electrically connected; so that when the aerosol generating device is powered on and working, the control unit 20 makes corresponding adjustments to the heating component 30 according to the temperature value detected by the detection circuit 37, for example, by adjusting the current value of the conductive coil 33/33a/33b/33c. To control the temperature field, or selectively connect the first wire 331c or the second wire 332c of the conductive coil 33/33a/33b/33c according to the temperature value, that is, selectively connect different heating gears to heat the heating component. The temperature field of 30°C is controlled to increase the fogging rate when the aerosol generating device is working, and the amount of fogging is more balanced and reasonable to achieve the best atomization effect.

The power supply component 10 is electrically connected to the heating component 30 and the control unit 20 and is used to supply power to the heating component 30 and the control unit 20 to ensure that the aerosol generating device can operate normally. The power component 10 may specifically be a dry battery, a lithium battery, etc.

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

A heating component, wherein the heating component includes:

Base body, in the shape of a hollow tube;

A radiation heating layer is provided on the side where the inner wall surface of the base body is located, and is used to radiate rays when being heated; and

A conductive coil is arranged around the base body and is used to generate a changing magnetic field when energized to heat the radiation heating layer.
The heating assembly according to claim 1, wherein the changing magnetic field generated by the conductive coil when energized causes the base body to generate eddy currents and heat up to heat the radiation heating layer.
The heating assembly according to claim 2, wherein the base body is a metal base material.
The heating component according to claim 2, wherein the heating component further includes an insulating layer, the insulating layer is provided between the outer wall surface of the base body and the conductive coil, and the conductive coil is provided around the Insulation.
The heating assembly according to claim 1, wherein the changing magnetic field generated by the conductive coil when energized causes the radiant heating layer to generate eddy currents and be heated.
The heating component according to claim 5, wherein the base is an insulating base material, and the radiation heating layer is doped with metal particles.
The heating assembly according to claim 2, wherein the heating assembly further includes a reflective layer, the reflective layer is arranged around the outside of the radiant heating layer and used to reflect rays radiated by the radiant heating layer.
The heating assembly according to claim 7, wherein the reflective layer is stacked on a side of the conductive coil away from the base and is disposed around the conductive coil for reflecting heating emitted by the radiant heating layer. Rays.
The heating component according to claim 7, wherein the heating component further includes a protective layer, the protective layer is stacked on a side of the radiant heating layer facing away from the base body.
The heating component according to claim 1, wherein the conductive coil is evenly wound around the outer wall of the base; or

The conductive coil includes a first line segment and a second line segment connected, the first line segment and the second line segment The line segments are evenly wound around the outer wall surface of the base body, wherein the winding density of the first line segment is greater than the winding density of the second line segment; or

The conductive coil includes a first conductor and a second conductor that are spaced apart. The first conductor and the second conductor are evenly wound around the outer wall of the base body, and the first conductor and the second conductor are staggered. Swirling, wherein the first conductor and the second conductor are selectively conductive.
The heating assembly according to claim 1, wherein the conductive coil has a linear resistance temperature coefficient characteristic, the heating assembly further includes a detection circuit, the detection circuit is used to detect electrical parameters of the conductive coil to characterize The temperature of the radiant heating layer.
The heating assembly of claim 1, wherein the radiant heating layer is an infrared layer.
An aerosol generating device, wherein the aerosol generating device includes:

A heating component used to heat and atomize aerosol-generating products when power is applied, and the heating component is the heating component according to any one of claims 1-12;

A power supply component is electrically connected to the heating component and used to supply power to the heating component.