CN115553507A - Airflow heating assembly and aerosol generating device - Google Patents
Airflow heating assembly and aerosol generating device Download PDFInfo
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- CN115553507A CN115553507A CN202211311430.6A CN202211311430A CN115553507A CN 115553507 A CN115553507 A CN 115553507A CN 202211311430 A CN202211311430 A CN 202211311430A CN 115553507 A CN115553507 A CN 115553507A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 28
- 229910002804 graphite Inorganic materials 0.000 claims description 28
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
- A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
Landscapes
- Direct Air Heating By Heater Or Combustion Gas (AREA)
Abstract
The present invention discloses an airflow heating assembly and an aerosol-generating device for heating an aerosol-generating article to generate an aerosol, the airflow heating assembly comprising: the air guide element is provided with a first mounting cavity and a plurality of through air guide channels, and the air guide channels are used for air circulation; the magnetic heating body is arranged in the first installation cavity and is driven by alternating current to generate an alternating magnetic field, and the magnetic heating body generates heat in the alternating magnetic field to heat the air guide element, so that the air guide element heats airflow flowing through the air guide channel. Compare in traditional electromagnetic induction heating mode, the spare part of magnetism heat-generating body still less, can effectively reduce air current heating element's volume, and simultaneously, its efficiency of generating heat also obtains effectual promotion, has improved user experience.
Description
Technical Field
The invention relates to the technical field of aerosol generating devices, in particular to an airflow heating assembly and an aerosol generating device.
Background
With the development and popularization of the non-combustible heating technology, the aerosol generating device is more and more widely applied. The most important component in an aerosol-generating device is a heating device by which the aerosol-generating article is heated so that the aerosol-generating article can produce an aerosol; there are also proposals for heating aerosol-generating articles by heating an air stream, but these are relatively bulky and consume relatively much power.
Disclosure of Invention
The invention provides an airflow heating assembly and an aerosol generating device, which aim to solve the technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
the embodiment of the application provides an air current heating element and aerosol generating device, can reduce the consumption, promotes air current heating element's heating efficiency.
The present embodiments provide an airflow heating assembly for heating an aerosol-generating article to generate an aerosol, the airflow heating assembly comprising an air guide element and a magnetic heat-generating body, the air guide element being provided with a first mounting cavity and a plurality of through air guide channels for the circulation of air; the magnetic heating body is arranged in the first mounting cavity and is driven by alternating current to generate an alternating magnetic field, and the magnetic heating body generates heat in the alternating magnetic field to heat the air guide element, so that the air guide element heats air flowing through the air guide channel.
The embodiment of the application provides an aerosol generating device, which comprises a shell, a power supply assembly, a circuit assembly and the airflow heating assembly, wherein the shell is provided with an accommodating cavity, the power supply assembly, the circuit assembly and the airflow heating assembly are arranged in the accommodating cavity, and the power supply assembly, the circuit assembly and the magnetic heating body are electrically connected with each other; wherein the circuit assembly includes an inverter circuit for converting the direct current supplied from the power supply assembly into an alternating current and supplying the alternating current to the magnetic heating body.
There is also provided in an embodiment of the present application an airflow heating assembly for heating an aerosol-generating article to generate an aerosol, the airflow heating assembly comprising a graphite air guide element and a self-heating element, the graphite air guide element having a first mounting cavity centrally disposed therein and a plurality of air guide channels disposed around the first mounting cavity; the self-induction heating body is arranged in the first mounting cavity, the self-induction heating body is driven by alternating current to generate an alternating magnetic field, and the self-induction heating body generates heat in the alternating magnetic field to heat the graphite air guide element; the graphite air guide element heats the air flow passing through the air guide channel such that the heated flow of hot air heats the aerosol-generating article.
The air current heating assembly comprises an air guide element and a magnetic heating body, wherein the air guide element is provided with a first installation cavity and a plurality of air guide channels, the magnetic heating body is arranged in the first installation cavity, and the magnetic heating body is electrically connected with an external alternating current power supply. When an external power supply energizes the magnetic heating body, the magnetic heating body can generate an alternating magnetic field, and the magnetic heating body generates heat in the alternating magnetic field to heat the air guide element, so that the air flow flowing through the air guide channel is heated. Compare in traditional electromagnetic induction heating mode, the spare part of magnetism heat-generating body still less, can effectively reduce air current heating element's volume, simultaneously, compare in the heat-generating body of pure resistance formula, the efficiency of generating heat of magnetism heat-generating body also obtains effectual promotion, has improved user experience.
Drawings
Fig. 1 is an exploded view of some of the components of an airflow heating assembly according to an embodiment of the present application.
FIG. 2 is a schematic view of a perspective of an air guide element of an airflow heating assembly according to an embodiment of the present application.
Fig. 3 is an enlarged view of one embodiment of detail a in fig. 1.
FIG. 4 is a cross-sectional view of a perspective of an air guide member of an airflow heating assembly according to an embodiment of the present application.
Fig. 5 is an exploded view of a perspective view of an airflow heating assembly according to an embodiment of the present application.
Fig. 6 is a schematic view showing the assembly of an air guide member and a magnetic heat generating body according to another embodiment of the present application.
FIG. 7 is a schematic view showing the assembly of the air guide member and the magnetic heat-generating body according to still another embodiment of the present application.
FIG. 8 is a cross-sectional view from one perspective of a keep-warm assembly of an airflow heating assembly according to an embodiment of the present application.
FIG. 9 is a cross-sectional view from one perspective of an airflow heating assembly according to an embodiment of the present application.
Figure 10 is an exploded view from one perspective of an aerosol-generating device according to embodiments of the present application.
Detailed Description
To facilitate an understanding of the present application, the present application is described in more detail below with reference to the figures and the detailed description. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used herein, the terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship as shown in the figures, which is for ease of description and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.
An airflow heating assembly and an aerosol generating device according to embodiments of the present application will be described in detail below with reference to fig. 1 to 10. It should be noted that the following examples are only for explaining the present application and do not constitute a limitation to the present application.
Referring to fig. 1, an airflow heating element 100, typically a micro-heating element, is often used to heat products such as aerosol-generating articles. The airflow heating assembly 100 includes an air guide member 10 and a magnetic heat generating body 20. The magnetic heating element 20 is provided inside or on the outer peripheral surface of the air guide member 10, and the magnetic heating element 20 is electrically connected to an external ac power supply. The air guide element 10 is disposed in abutment with or close to abutment with at least part of the aerosol-generating article. When an external ac power supply supplies ac power to the magnetic heat-generating body 20, the magnetic heat-generating body 20 may generate an alternating magnetic field, and the magnetic heat-generating body 20 may increase in resistance due to a skin effect in the alternating magnetic field, thereby generating heat to heat the air guide member 10, and further to heat the aerosol-generating article near the air guide member 10 to generate aerosol. Compared with a pure resistance type heating body, the heating efficiency of the magnetic heating body 20 is higher, and the use experience of the product is improved. It is noted that close fitting as used herein means a gap distance between two objects that are close to each other of 0 to 2 mm.
It is to be understood that, in some embodiments, the magnetic heat-generating body 20 may also be referred to as a self-induction heat-generating body. The self-induction heating body is capable of generating heat in a self-generated alternating magnetic field and transferring the heat to the air guide element 10.
It will be appreciated that in some embodiments, the air guide element 10 may comprise graphite or a graphite alloy. Because the graphite or the graphite alloy has a certain magnetic induction performance, when an external alternating current power supply supplies alternating current to the magnetic heating element 20, the magnetic heating element 20 can generate an alternating magnetic field, and the resistance of the magnetic heating element 20 is increased to generate heat due to the skin effect, so that the air guide element 10 is heated, and in addition, the air guide element 10 can generate eddy current and generate certain heat due to the influence of the magnetic field; it is understood that the heat of the air guide member includes at least a portion which generates heat by itself and a portion which is conducted by the magnetic heat-generating body 20; in practical cases, the heat of the air guide member 10 is conducted by the magnetic heat-generating body 20 for the most part.
Referring to fig. 2 and 4 for the air guide member 10, the air guide member 10 is provided with a first installation cavity 11 and a plurality of air guide passages 12 therethrough. The first mounting cavity 11 is used for mounting the magnetic heating body 20, and the air guide channel 12 is used for air circulation. In some embodiments, in order to increase the efficiency of heating of the aerosol-generating article, it is desirable to make the aperture of the air-guide channel 12 as large as possible, which effectively increases the flow rate of the heated air-stream, for example the diameter D1 of the air-guide channel 12 is such that: d1 is more than 0.01mm and less than or equal to 3mm. In other embodiments, the diameter D1 of the gas guide channel 12 is such that: d1 is more than 0.1mm and less than or equal to 1mm.
In some implementations, the first mounting cavity 11 can be a through hole through the air guide element 10 or a blind hole with a cavity bottom. The embodiment of the present application is not limited, and it is sufficient that the first installation chamber 11 can accommodate the magnetic heat-generating body 20 and exchange heat with the magnetic heat-generating body 20.
It will be appreciated that in some embodiments, the air guide element 10 may comprise graphite or a graphite alloy. Since graphite or graphite alloy has a good heat conduction property, the magnetic heating element 20 is mounted inside the air guide element 10 made of graphite or graphite alloy, so that heat loss can be reduced, the heat transfer rate between the magnetic heating element 20 and the air guide element 10 is greatly improved, and meanwhile, the air guide element 10 has a fast temperature change, which is beneficial to rapidly heating the air flowing through the air guide channel 12. In other embodiments, the air-guiding element 10 may also comprise graphite or a graphite alloy only locally, for example the inner wall of the first mounting chamber 11 or the end of the air-guiding element 10 near the aerosol-generating article. That is, the local part of the gas guide element 10 is made of graphite or graphite alloy, so that the material consumption of graphite or graphite alloy can be reduced on the premise of ensuring the heating efficiency of the gas guide element 10, thereby reducing the production cost, and simultaneously preventing adhesion of smoke oil and the like, and being beneficial to cleaning.
The Temperature Coefficient of Resistance (TCR) represents the relative change of the resistance value when the temperature of the resistor changes by 1 degree celsius. The larger the temperature coefficient of resistance, the larger the change in resistance value of the material at a temperature change of 1 degree celsius. Referring to fig. 1, in order to improve the heating efficiency of the magnetic heating element 20, the magnetic heating element 20 may be made of a material having a high temperature coefficient of resistance. As an example, the magnetic heat-generating body 20 may include at least one of a magnetic material and a soft magnetic material. Ferromagnetic materials include ferromagnetic iron or ferromagnetic steel; the soft magnetic material comprises permalloy or an iron-aluminum alloy.
In some embodiments, the magnetic heat generating body 20 is a magnetic coil. Referring to fig. 1, the magnetic coil is formed in a spiral shape, and preferably, the magnetic coil formed in a spiral shape has substantially the same diameter dimension in the axial direction thereof, thereby facilitating the installation of the magnetic coil in the first installation cavity 11 of the air guide member 10. The cross-section of the magnetic coil may be of various shapes, such as circular, elliptical, rectangular, parallelogram, quincunx, square, etc. In some embodiments, the magnetic heating element 20 may be a sheet, or a sheet-shaped magnetic heating element is formed by bending and reciprocating. In some embodiments, at least a portion of the magnetic heating element 20 is formed by a spiral of magnetic heating wires that form a plurality of ventilation air gaps 21 during the spiral. The ventilation air gap 21 can be used for circulating air flow, so that the air flow flowing through the magnetic heating body 20 is directly heated, and the loss of heat transfer is effectively reduced. As an embodiment, the first mounting cavity 11 may be a through hole, and the magnetic heating wire with the ventilation air gap 21 is mounted in the first mounting cavity 11, so that part of the air flow directly flows through the air guide element 10 after being directly heated by the magnetic heating wire in the first mounting cavity 11.
Because graphite or graphite alloy materials exist in the air guide element 10, the air guide element 10 has electrical conductivity, and the magnetic heating element 20 is electrically connected with an external alternating current power supply, in order to prevent the airflow heating assembly 100 from being accidentally electrically conducted, the surface of the magnetic heating element 20 needs to be subjected to insulation treatment, so that the reliability and the safety of the product are improved. In some embodiments, referring to fig. 3, the airflow heating assembly 100 further includes a first insulating layer 30, the first insulating layer 30 wraps the outer surface of the magnetic heating element 20, and the first insulating layer 30 can prevent the energized magnetic heating element 20 and the air guide element 10 from being electrically connected, so as to avoid affecting the resistance value and potential safety hazard, and ensure effective and safe use of the magnetic heating element 20.
Referring to fig. 4, in other embodiments, the airflow heating assembly 100 may further include a second insulating layer 40, the second insulating layer 40 covers an inner wall surface of the first mounting cavity 11, and the second insulating layer 40 isolates an electrical contact between the air guide element 10 and the magnetic heating element 20. It is understood that the airflow heating assembly 100 may be provided with the first insulating layer 30 and the second insulating layer 40 at the same time, or may be provided with the first insulating layer 30 only on the surface of the magnetic heating element 20 or provided with the second insulating layer 40 only on the inner wall of the first mounting cavity 11. As an example, the first insulating layer 30 may include glass glaze or nano ceramic coating or other materials having an insulating function. The second insulating layer 40 may include glass frit or nano-ceramic coating or other material having an insulating effect.
In order to ensure that the heat generated by the magnetic heat-generating body 20 is transmitted to the air guide member 10 as well as possible during the mounting of the magnetic heat-generating body 20 and the air guide member 10, it is preferable that the outer surface of the magnetic heat-generating body 20 be directly attached to the inner wall surface of the first mounting chamber 11 of the air guide member 10. However, due to the error of the processing technique and the requirement of assembly, in some cases, the outer wall surface of the assembled magnetic heating element 20 and the inner wall surface of the first mounting cavity 11 can only be closely attached or have a certain gap. Therefore, referring to fig. 5, in some embodiments, the airflow heating assembly 100 may further include a heat conducting member 50, the heat conducting member 50 is disposed between the magnetic heating element 20 and the air guide element 10, and the heat conducting member 50 is at least partially abutted against the magnetic heating element 20 and the air guide element 10 respectively to ensure that the heat transfer efficiency between the three is at a good level.
In some embodiments, the thermal conductor 50 includes at least one of a glaze layer or a ceramic paste or a metal-melting material. Of course, in some embodiments, the heat conducting member 50 can have both heat conducting and insulating properties, so that the additional arrangement of the first insulating layer 30 or the second insulating layer 40 can be reduced, thereby reducing the processing flow of the airflow heating assembly 100.
In an embodiment in which the number of the magnetic heat-generating bodies 20 is two or more, the air guide member 10 is also provided with two or more first installation cavities 11 in some embodiments, and each of the magnetic heat-generating bodies 20 is installed in one of the first installation cavities 11. In the actual production process, two or more first installation cavities 11 may be distributed on the air guide element 10 in a linear array, a circumferential array, a spot-shot shape, a random distribution, etc., according to requirements. In some embodiments, the plurality of magnetic heating elements 20 may also be electrically connected, for example, in parallel or in series according to actual needs.
In some embodiments, referring to fig. 6 and 7, the magnetic heating element 20 is shaped like a sheet, and in some embodiments, the air guide member 10 includes two or more separate pieces stacked one on another, and the sheet-shaped magnetic heating element 20 is disposed between the two separate pieces. In some embodiments, the first mounting chamber 11 is a flat groove into which the sheet-shaped magnetic heating element 20 is inserted. In some embodiments, the magnetic material of the sheet-shaped magnetic heating element 20 is formed by bending or the magnetic material is formed by bending back and forth.
It is to be appreciated that in some embodiments, referring to fig. 5 and 8, the airflow heating assembly 100 further includes a thermal insulation assembly 60. The insulating member 60 is provided with a receiving cavity 611, one part of the receiving cavity 611 is used for receiving the air guide element 10, and the other part of the receiving cavity 611 is used for receiving the aerosol-generating article, but of course, there may be other parts of the receiving cavity 611 besides the above two parts. The insulating member 60 serves to mount the air guide element 10, while the insulating member 60 also reduces the heat dissipation from the air guide element 10 so that the heat from the air guide element 10 is transferred primarily to the aerosol-generating product inserted into the receiving cavity 611. The insulating member 60 is also capable of storing heat, so that the air guide member 10 and the insulating member 60 can still use the residual heat to heat the aerosol-generating article in the receiving cavity 611 after the magnetic heat generating element 20 stops generating heat.
As an example, the insulation assembly 60 includes an inner tube portion 61 and an outer tube portion 62. The inner tube 61 is provided with the above-mentioned receiving cavity 611, the outer tube 62 is disposed around the outer side of the inner tube 61, and a cavity 63 is formed between the outer tube 62 and the inner tube 61, and the cavity 63 may be closed or may be in communication with the outside. The cavity 63 may be filled with an inert gas or a material having a thermal conductivity lower than 2W/m · k, and the heat transfer from the inner tube portion 61 to the outer tube portion 62 may be slowed down to some extent. In some embodiments, in order to enable heat of the inner tube portion 61 to also be transferred to the aerosol-generating article inserted into the receiving cavity 611, the circumferential outer surface of the aerosol-generating article is disposed in or near abutment with the inner wall surface of the inner tube portion 61. In other embodiments, the insulating assembly 60 may be a single-layer tube, and the inner wall surface of the single-layer tube is attached to or close to the outer circumferential surface of the aerosol.
In some embodiments, referring to fig. 5 and 9, to further reduce the heat transfer from the air guide element 10 to the insulating member 60, the airflow heating assembly 100 further includes a ceramic sleeve 70, the ceramic sleeve 70 is disposed between the air guide element 10 and the insulating member 60, and at least a portion of the air guide element 10 is connected to the insulating member 60 through the ceramic sleeve 70. On the one hand, the ceramic sleeve 70 has the function of connecting and installing the air guide element 10 on the heat insulation assembly 60; on the other hand, the ceramic bushing 70 has a heat insulating function to prevent the gas guide member 10 from directly contacting the insulating member 60, and the temperature of the insulating member 60 provided with the ceramic bushing 70 is lower than that of the insulating member 60 not provided with the ceramic bushing 70.
In some embodiments, referring to fig. 5 and 9, the airflow heating assembly 100 further comprises a cover plate 80, the cover plate 80 being disposed at an end of the insulating assembly 60 facing away from the aerosol-generating article. In one embodiment, the inner wall surface of the thermal insulation member 60 is provided with a first abutting portion 64, the first abutting portion 64 abuts against one end of the air guide element 10, the other end of the air guide element 10 abuts against the cover plate 80, and the cover plate 80 is matched with the first abutting portion 64 to fix the air guide element 10 in the accommodating cavity 611 of the thermal insulation member 60. It is to be understood that, in other embodiments, referring to fig. 4, when the first installation cavity 11 of the air guide element 10 is a through hole, the inner wall of the first installation cavity 11 is provided with the second abutting portion 111, or the magnetic heating element 20 is provided with the second abutting portion 111, and the cover plate 80 fixes the magnetic heating element 20 in the first installation cavity 11 by cooperating with the second abutting portion 111. It is to be noted that, when the inner wall of the first mounting cavity 11 is provided with the second abutting portion 111 and the second insulating layer 40, the second insulating layer 40 needs to cover the second abutting portion 111.
The airflow heating assembly 100 of the embodiment of the application comprises an air guide element 10 and a magnetic heating element 20, wherein the air guide element 10 is provided with a first installation cavity 11 and a plurality of air guide channels 12, the magnetic heating element 20 is arranged in the first installation cavity 11, and the magnetic heating element 20 is electrically connected with an external alternating current power supply. When an external power source energizes the magnetic heat generating body 20, the magnetic heat generating body 20 may generate an alternating magnetic field, and the magnetic heat generating body 20 generates heat in the alternating magnetic field to heat the air guide member 10, thereby heating the air current flowing through the air guide passage 12. Compared with the traditional electromagnetic induction heating mode, the magnetic heating body 20 has fewer parts, the size of the airflow heating assembly 100 can be effectively reduced, meanwhile, the heating efficiency is effectively improved, and the user experience is improved.
Based on the same concept, the present application further provides an aerosol-generating device 1000, and referring to fig. 10, the aerosol-generating device 1000 includes a housing 200, a power supply assembly 300, a circuit assembly 400, and an airflow heating assembly 100 as described above. The housing 200 is provided with a receiving cavity, the power supply assembly 300, the circuit assembly 400 and the airflow heating assembly 100 are all mounted in the receiving cavity 611, and the receiving cavity 611 of the airflow heating assembly 100 is in communication with the outside so that the aerosol-generating product can be inserted into the receiving cavity 611. The power supply assembly 300 provides an alternating current to the airflow heating assembly 100 through the circuit assembly 400, thereby enabling the airflow heating assembly 100 to heat the aerosol-generating article.
The circuit assembly 400 includes, as an example, an inverter circuit that converts direct current of the power supply assembly 300 into alternating current and supplies the alternating current to the magnetic heating body 20.
It is understood that in some embodiments, power module 300 may include a plurality of batteries electrically connected in series, which may raise the voltage of power module 300 and thus the power supply voltage to heat-generating magnet 20.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An airflow heating assembly for heating an aerosol-generating article to generate an aerosol, the airflow heating assembly comprising:
the air guide element is provided with a first mounting cavity and a plurality of through air guide channels, and the air guide channels are used for air circulation;
the magnetic heating body is arranged in the first installation cavity and is driven by alternating current to generate an alternating magnetic field, and the magnetic heating body generates heat in the alternating magnetic field to heat the air guide element, so that the air guide element heats airflow flowing through the air guide channel.
2. A gas flow heating assembly according to claim 1,
at least part of the magnetic heating body is formed by a magnetic heating wire spiral, and a plurality of ventilation air gaps are formed in the spiral process of the magnetic heating wire.
3. Airflow heating assembly according to claim 1,
the airflow heating assembly further comprises a first insulating layer, and the first insulating layer is arranged on the outer surface of the magnetic heating body; and/or the like, and/or,
the airflow heating assembly further comprises a second insulating layer, and the second insulating layer is arranged on the inner surface of the first installation cavity.
4. Airflow heating assembly according to claim 1,
the airflow heating assembly further comprises a heat conducting piece, the heat conducting piece is arranged between the magnetic heating body and the air guide element, and the heat conducting piece is respectively at least partially abutted against the magnetic heating body and the air guide element; the heat conducting piece comprises a glaze layer, or ceramic glue, or a metal melting material;
the number of the magnetic heating bodies is two or more, the air guide element is provided with the first installation cavity, the number of the air guide element is the same as that of the magnetic heating bodies, and each magnetic heating body is arranged in one of the first installation cavity.
5. A gas flow heating assembly according to claim 1,
the gas directing element comprises graphite; or,
the portion of the air guide element adjacent to the aerosol-generating article comprises graphite.
6. Airflow heating assembly according to claim 1,
the airflow heating assembly further comprises an insulation assembly, wherein a receiving cavity is arranged in the insulation assembly and is used for receiving the aerosol generating product and the air guide element;
the heat preservation assembly comprises an inner pipe part and an outer pipe part, the containing cavity is arranged inside the inner pipe part, the outer pipe part surrounds the inner pipe part, a cavity is enclosed between the outer pipe part and the inner pipe part, and the inner wall of the inner pipe part is closely attached to the aerosol generating product; or,
the heat insulation component is a single-layer pipe, and the inner wall of the single-layer pipe is approximately attached to the aerosol generating product;
the air flow heating assembly further comprises a ceramic sleeve, the ceramic sleeve is arranged between the air guide element and the heat preservation assembly, and at least part of the air guide element is connected with the heat preservation assembly through the ceramic sleeve.
7. A gas flow heating assembly according to claim 6,
the airflow heating assembly also comprises a cover plate, and the cover plate is arranged at an opening at one end of the heat insulation assembly;
the heat insulation assembly is provided with a first abutting part;
the air guide element is fixed in the accommodating cavity through the first abutting part and the cover plate.
8. Airflow heating assembly according to claim 1,
the device also comprises a cover plate;
at least one of the inner wall of the first mounting cavity and/or the magnetic heating body is provided with a second abutting part;
the magnetic heating body is fixed in the first installation cavity through the second abutting part and the cover plate.
9. An aerosol generating device comprising a housing, a power supply assembly, a circuit assembly and an airflow heating assembly as claimed in any one of claims 1 to 8, the housing having a receiving cavity, the power supply assembly, the circuit assembly and the airflow heating assembly being disposed in the receiving cavity, the power supply assembly, the circuit assembly and the heating magnet being electrically connected to one another;
wherein the circuit assembly includes an inverter circuit for converting the direct current supplied from the power supply assembly into an alternating current and supplying the alternating current to the magnetic heating body.
10. An airflow heating assembly for heating an aerosol-generating article to generate an aerosol, the airflow heating assembly comprising:
the graphite air guide element is provided with a first mounting cavity and a plurality of air guide channels surrounding the first mounting cavity in the center;
the self-induction heating body is arranged in the first mounting cavity, is driven by alternating current to generate an alternating magnetic field, and generates heat in the alternating magnetic field so as to heat the graphite air guide element;
the graphite air-guide element heating the air-stream flowing through the air-guide channel such that the heated hot air-stream heats the aerosol-generating article;
the heat preservation assembly is internally provided with an accommodating cavity, the accommodating cavity is used for accommodating the aerosol generating product and the graphite air guide element, and the inner wall of the heat preservation assembly is close to the aerosol generating product in a fit manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211311430.6A CN115553507A (en) | 2022-10-25 | 2022-10-25 | Airflow heating assembly and aerosol generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211311430.6A CN115553507A (en) | 2022-10-25 | 2022-10-25 | Airflow heating assembly and aerosol generating device |
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| Publication Number | Publication Date |
|---|---|
| CN115553507A true CN115553507A (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211311430.6A Pending CN115553507A (en) | 2022-10-25 | 2022-10-25 | Airflow heating assembly and aerosol generating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007941A1 (en) * | 2022-07-08 | 2024-01-11 | 深圳市合元科技有限公司 | Airflow heating assembly and aerosol generating device |
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2022
- 2022-10-25 CN CN202211311430.6A patent/CN115553507A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007941A1 (en) * | 2022-07-08 | 2024-01-11 | 深圳市合元科技有限公司 | Airflow heating assembly and aerosol generating device |
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