CN117397877A - Airflow heating assembly and aerosol generating device - Google Patents
Airflow heating assembly and aerosol generating device Download PDFInfo
- Publication number
- CN117397877A CN117397877A CN202210802011.6A CN202210802011A CN117397877A CN 117397877 A CN117397877 A CN 117397877A CN 202210802011 A CN202210802011 A CN 202210802011A CN 117397877 A CN117397877 A CN 117397877A
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- Prior art keywords
- air guide
- air
- heating
- guide element
- heating assembly
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 214
- 239000000443 aerosol Substances 0.000 title claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910002804 graphite Inorganic materials 0.000 claims description 11
- 239000010439 graphite Substances 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 11
- 230000004323 axial length Effects 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 14
- 230000001965 increasing effect Effects 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- -1 iron-chromium-aluminum Chemical compound 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- Resistance Heating (AREA)
- Direct Air Heating By Heater Or Combustion Gas (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The embodiment of the application relates to the technical field of aerosol generating devices and discloses an airflow heating assembly and an airflow heating device, wherein the airflow heating assembly comprises an air guide element and a heating body, a first installation cavity is arranged in the air guide element, and the air guide element is provided with a plurality of through air guide channels for gas circulation; the heating body is arranged in the first installation cavity and is used for being electrically connected with an external power supply to heat the air guide element, so that the air guide element heats the air flowing through the air guide channel. Through setting up the heat-generating body in the air guide component inside, can effectively overcome traditional heat-generating body cover and locate the outside problem that leads to the heat-generating body outwards to give off partial heat of air guide component, can improve the heating efficiency of heat-generating body.
Description
Technical Field
The embodiment of the application 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 heating non-combustion technology, aerosol generating devices are becoming more and more widely used. The most important component in an aerosol-generating device is a heating device by which the aerosol-generating article is heated, thereby enabling the aerosol-generating article to generate smoke; there are also proposals to heat aerosol-generating articles by heating the air stream, but these are relatively bulky and consume relatively large amounts of power.
Disclosure of Invention
The embodiment of the application provides an airflow heating assembly and an aerosol generating device, which can reduce power consumption.
The technical scheme adopted by the embodiment of the application is as follows: there is provided an airflow heating assembly for heating an aerosol-generating article to generate an aerosol, the airflow heating assembly comprising: the air guide element is internally provided with a first mounting cavity and is provided with a plurality of through air guide channels for air circulation; the heating body is arranged in the first mounting cavity and is used for being electrically connected with an external power supply to heat the air guide element, so that the air guide element heats air flowing through the air guide channel.
Another technical scheme adopted in the embodiment of the application is as follows: there is provided an airflow heating assembly for heating an aerosol-generating article to generate an aerosol, the airflow heating assembly comprising: the air guide element is internally provided with a first mounting cavity and is provided with a plurality of through air guide channels for air circulation; the resistance heating body is arranged in the first mounting cavity and is used for being electrically connected with an external power supply to heat the air guide element so that the air guide element heats the air flowing through the air guide channel; wherein the gas guide element is made of graphite or graphite alloy.
The embodiment of the application adopts a further technical scheme that: an aerosol-generating device is provided for heating an aerosol-generating article to produce an aerosol; the aerosol-generating device comprises: a housing having a receiving cavity therein for removably disposing the aerosol-generating article; and an air flow heating assembly as described above, the air flow heating assembly being disposed within the receiving cavity, the air flow heating assembly being disposed at an upstream air flow position of the aerosol-generating article such that air passing through the air flow heating assembly enters the aerosol-generating article after being heated.
The air flow heating assembly comprises an air guide element and a heating body, wherein a first installation cavity is formed in the air guide element, the air guide element is provided with a plurality of through air guide channels, and the air guide channels are used for air circulation; the heating body is arranged in the first installation cavity and is used for being electrically connected with an external power supply to heat the air guide element, so that the air guide element heats the air flowing through the air guide channel. By arranging the heating element inside the air guide element, the heating efficiency of the heating element can be improved, and the power consumption of the airflow heating assembly can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is an exploded view of a view of an air flow heating assembly according to an embodiment of the present application.
FIG. 2 is a schematic view of a view of an air guiding element of an air flow heating assembly according to an embodiment of the present application.
FIG. 3 is a schematic view of an airflow heating assembly according to another embodiment of the present application.
FIG. 4 is a schematic view of a view of an airflow heating assembly according to yet another embodiment of the present application.
FIG. 5 is a schematic view of a heater in an airflow heating assembly according to an embodiment of the present application.
FIG. 6 is a cross-sectional view of an embodiment of an airflow heating assembly according to the present application from one perspective.
FIG. 7 is a cross-sectional view of a view of an air guide element and a puncture heating element of an air flow heating assembly according to an embodiment of the present application.
Fig. 8 is a cross-sectional view of an aerosol-generating device according to an embodiment of the present application from a perspective.
Fig. 9 is a cross-sectional view of an aerosol-generating device according to another embodiment of the present application from a perspective.
Detailed Description
In order to facilitate an understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like as used in this specification, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus 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. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.
In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not collide with each other.
Referring to fig. 1, the airflow heating assembly 100 includes an air guiding element 10 and a heating element 20, the heating element 20 is connected to the air guiding element 10, the heating element 20 is electrically connected to an external power source, the heating element 20 is used for heating the air guiding element 10, the air guiding element 10 is used for allowing air to flow through, and heating the air flowing through the air guiding element to improve the heat energy of the air.
In one embodiment of the application, the gas guide element 10 is made of graphite or graphite alloy. The air guide element 10 made of graphite or graphite alloy has good thermal conductivity, and the air guide element 10 can be heated to a preset temperature in a short time by directly heating the air guide element 10 by the heating body 20, for example, the air guide element 10 can be heated to 300 ℃ or higher within 25S.
For the above-mentioned air guiding element 10, referring to fig. 1 and 2, the air guiding element 10 is provided with at least one first mounting cavity 12 and a plurality of air guiding channels 11, the first mounting cavity 12 is disposed inside the air guiding element 10, and the first mounting cavity 12 is used for mounting the heating element 20. The air guide passage 11 penetrates the air guide member 10 in the axial direction of the air guide member 10, and the air guide passage 11 is used for air circulation. When the heating body 20 is in an operating state and heats the air guide element 10, the air passing through the air guide channel 11 is heated by the air guide element 10 to form a hot air flow, and the hot air flows to the inside of the aerosol-generating article to be heated, wherein the temperature of the hot air flow is 200-400 ℃.
In some embodiments, the plurality of air guide channels 11 are cylindrical in shape; specifically, the diameter D1 of the air guide passage 11 satisfies: by adopting the scheme of the small-diameter air guide channel 11, on one hand, the number of the air guide channels 11 can be increased in the limited space of the air guide element 10, and on the other hand, the heating efficiency of the air flowing through the air guide channel 11 can be improved, and the air flow is prevented from being large due to the overlarge air guide channel 11, so that the air is heated poorly.
In some embodiments, the ratio of the sum of the areas of the cross-sections of the plurality of air guide channels 11 to the area of the cross-section of the air guide element 10 is greater than or equal to 1/5; the cross section of the air guide channel 11 is within the cross section of the air guide element 10, and the cross section of the air guide channel 11 and the cross section of the air guide element 10 are perpendicular to the central line of the air guide element 10. On the premise of meeting the structural stability of the air guide element 10, the ratio of the area of the cross section of the air guide channel 11 to the area of the cross section of the air guide element 10 is closer to 1, which means that the larger the effective area of the air guide channel 11 is, the larger the flow area of available air is; when the area of the cross section of the individual air guide channels 11 is determined, the number of air guide channels 11 that can be provided on the air guide element 10 is also increased.
In some embodiments, a plurality of turns of the air guide channels 11 are disposed around the center of the air guide element 10, and the ratio of the number of air guide channels 11 located at the inner turn to the number of air guide channels 11 located at the outer turn is equal to the ratio of the radius of the inner turn to the radius of the outer turn. The number of gas guide channels 11 that can be provided along the center of the cross section of the gas guide element 10, pointing in the direction of the edges of the cross section of the gas guide element 10, is increasing, which can increase the flow passage of gas. In some embodiments, the plurality of air guide channels 11 are arranged in a circumferential array, i.e. the distance between two adjacent air guide channels 11 located in the same circle is equal.
In some embodiments, referring to fig. 2 and 8, the air guide element 10 satisfies at least one of the following conditions:
(1) The diameter D3 of the air guide element 10 is: d3 is more than or equal to 4mm and less than or equal to 8mm;
(2) The diameter D3 of the air guide element 10 is: d3 is more than or equal to 6mm and less than or equal to 7mm;
(3) The cross-sectional area S1 of the air guide element 10 is: s1 is more than or equal to 10mm and less than or equal to 50mm 2 ；
(4) The cross-sectional area S1 of the air guide element 10 is: s1 is more than or equal to 25mm and less than or equal to 35mm 2 ；
(5) The axial length L1 of the air guide element 10 is: l1 is more than or equal to 5mm and less than or equal to 10mm; and
(6) The axial length L1 of the air guide element 10 is: l1 is more than or equal to 7mm and less than or equal to 9mm.
In other embodiments, the air guide channels 11 may be irregularly shaped, and the air guide channels 11 may be in a linear array, a radial array, or randomly distributed on the air guide element 10.
It should be noted that, the first installation cavity 12 is disposed in the air guiding element 10, and it is understood that the first installation cavity 12 is formed by recessing the air guiding element 10 from the outer surface of the air guiding element 10, or the air guiding element 10 is formed by splicing two or more split parts, and a cavity or a gap for installing the heating element 20 is formed between two adjacent split parts. Specifically, the following examples can be referred to:
in some embodiments, referring to fig. 3, the air guiding element 10 includes a first air guiding block 13 and a second air guiding block 14, the first air guiding block 13 and the second air guiding block 14 are sequentially disposed along a direction in which a center line of the air guiding element 10 extends, that is, an end surface of the first air guiding block 13 is opposite to an end surface of the second air guiding block 14, a first mounting cavity 12 is formed between the first air guiding block 13 and the second air guiding block 14, and the heating body 20 is disposed in the first mounting cavity 12. Specifically, the heating element 20 located between the first air guide block 13 and the second air guide block 14 is in a sheet shape, and may be a Mesh heating net, a metal sheet, a flexible heating film, or the like.
In some embodiments, referring to fig. 4, the air guide block includes a first air guide block 13 and a second air guide block 14, where the first air guide block 13 and the second air guide block 14 are sequentially disposed along a direction perpendicular to a direction in which a center line of the air guide element 10 extends, that is, a side surface of the first air guide block 13 and a side surface of the second air guide block 14 are disposed opposite to each other, a first installation cavity 12 is formed between the first air guide block 13 and the second air guide block 14, and the heating element 20 is disposed in the first installation cavity 12; specifically, the heating element 20 is in the form of a sheet, and the heating element 20 may be wound in a rod shape, specifically, a Mesh heating net, a metal sheet, or a flexible heating film.
In other embodiments, the air guide block includes a first air guide block 13 and a second air guide block 14, the first air guide block 13 is provided with a through groove, the second air guide block 14 is disposed in the through groove, a gap formed between the first air guide block 13 and the second air guide block 14 is the first mounting cavity 12, and the heating body 20 is disposed in the first mounting cavity 12. In some embodiments, the heating element 20 is in a cylindrical shape or a ring shape, the heating element 20 is sleeved on the outer surface of the second air guide block 14, and then the heating element 20 and the second air guide block 14 are installed in the through groove. In other embodiments, the heating element 20 is a resistance heating wire, the resistance heating wire is wound on the outer surface of the second air guiding block 14, and then the resistance heating wire and the second air guiding block 14 are installed in the through groove. In other embodiments, the heating element 20 may be MESH, heating film, or the like.
Of course, in other embodiments, the air guiding element 10 may include a plurality of air guiding blocks, where the plurality of air guiding blocks are stacked up and down along the extending direction of the center line of the air guiding element 10, or the plurality of air guiding blocks are stacked left and right along the extending direction of the center line of the vertical air guiding element 10, the heating element 20 is disposed at a gap between two adjacent air guiding blocks, and the heating element 20 heats the two adjacent air guiding blocks respectively.
For the first installation cavity 12 described above, referring to fig. 1 and 2, the first installation cavity 12 is disposed at the center of the air guiding element 10, and the heating element 20 is disposed in the first installation cavity 12. The heat generating body 20 is arranged at the center of the air guiding element 10, so that the characteristic that the heat generating body 20 generates heat in a spot-jet shape is effectively utilized, the heat generating body is outwards heated from the center of the air guiding element 10 along the radial direction, the heat dissipation of the heat generating body 20 can be greatly reduced, and the heat efficiency of the airflow heating assembly 100 is improved.
In some embodiments, the first mounting cavity 12 may be tubular with a diameter D2 that satisfies: on the premise that the first installation cavity 12 can install the heating element 20, the smaller the diameter of the first installation cavity 12 is, the more spaces of the air guide element 10 can be released, and the number of the air guide channels 11 can be increased. In order to achieve a better release of space, the diameter D2 of the first installation cavity 12 may also satisfy 0mm < D2. Ltoreq.1.7 mm.
In some embodiments, the first mounting cavity 12 may also be a flat slot, which may be disposed transversely on the air guiding element 10 or may be disposed vertically on the air guiding element 10. The flat groove may be inserted with the sheet-like heating element 20, and specifically, the sheet-like heating element 20 may be a resistive heating sheet made of metal. Therefore, the space of the air guide element 10 occupied by the first mounting cavity 12 can be reduced, the heating body 20 and the air guide element 10 can be attached as much as possible, better contact is kept, and the heating efficiency is improved.
In some embodiments, the number of the first mounting cavities 12 is plural, the number of the heating bodies 20 is plural, and the plural heating bodies 20 are disposed in the plural first mounting cavities 12. The first mounting cavities 12 may be disposed around the center of the air guiding element 10, may be disposed linearly, or may be disposed randomly. By providing a plurality of heating elements 20 in the air guide element 10, the length required for heating the air guide element 10 can be effectively reduced, and the thermal efficiency of the air flow heating assembly 100 can be improved.
In some embodiments, the inner surface of the first mounting cavity 12 is at least partially fitted to the outer surface of the heating element 20, so as to reduce the gap between the outer surface of the heating element 20 and the inner surface of the first mounting cavity 12, thereby enhancing the effect of the heating element 20 on the direct heating of the air guiding element 10; specifically, can adopt flat heater as the heat-generating body to make the surface of heater after the spiral can be straight state, when the heater of spiral is installed in first installation cavity 12, the surface of heater can laminate with the internal surface of first installation cavity 12, so that the produced heat of heater can directly transmit to air guide element 10, reduces thermal loss.
In some embodiments, the first mounting cavity 12 extends through the air guide element 10, the first mounting cavity 12 is used for mounting the heating element 20, and the first mounting cavity 12 can also be used for air flow circulation, so that the air flow channel in the air guide element 10 is increased. In some embodiments, the first mounting cavity 12 may also be configured as a blind hole, so as to facilitate fixing the heating element 20 in the first mounting cavity 12, and prevent the gas located in the first mounting cavity 12 from directly entering the inside of the aerosol-generating article after being heated by the heating element 20, which may cause a user to have a mouth-scalding condition when inhaling the smoke generated by the aerosol-generating article.
In some embodiments, the heating element 20 may only partially overlap the first mounting cavity 12, and the first mounting cavity 12 may also be disposed only in a partial region of the air guide element 10; for example, the axial length of the heat-generating body 20 inserted into the interior of the first mounting chamber 12 is at least 1/3 of the axial length of the air guide member.
In some embodiments, referring to fig. 6, an inner wall of the first mounting cavity 12 is provided with an abutting portion 122, the abutting portion 122 is used to abut against one end of the heating element 20, so as to facilitate mounting of the heating element 20, and the abutting portion 122 cooperates with other components to fix the heating element 20 in the first mounting cavity 12. In some embodiments, the abutment 122 may be a stepped surface. In some implementations, the inner wall of the first mounting cavity 12 is provided with a clamping groove for clamping connection with the heating body 20, so that the heating body 20 can be fixed in the first mounting cavity 12.
In some embodiments, referring to fig. 5 and 6, the heating element 20 is provided with a ventilation air gap 21, and the ventilation air gap 21 increases the passage of the gas in the first installation cavity 12, increases the passage of the gas directly or indirectly heated by the heating element 20, and increases the utilization rate of the hot gas. There are various ways of forming the ventilation air gap 21 of the heat-generating body 20, and some of them can be referred to the following embodiments.
For example, the heating element 20 is provided with a first hollow groove, at least the top of which is communicated with the air guide element 10, and/or at least the top of which is communicated with the bottom of the aerosol-generating article. The first hollow groove constitutes the ventilation air gap 21 of the heat-generating body 20, and is used for circulating the gas in the first installation cavity 12, and increasing the passage of the gas so that the gas directly heated by the heat-generating body 20 flows to the inside of the aerosol-generating article. Further, a plurality of protrusions may be disposed on an inner wall surface of the first hollow groove, and the plurality of protrusions are used for changing a flow direction of the air flow in the first hollow groove, so that the air flowing in the first hollow groove flows in an S-shape, thereby increasing heat absorbed by the air and preventing the air flow from entering the aerosol-generating article too quickly when the air flow is far lower than a preset heating temperature.
For example, a first hollow groove and a plurality of first through holes penetrating the side wall surface of the heating element 20 are provided in the heating element 20. The first hollow grooves and the plurality of first through holes together constitute the ventilation air gap 21 of the heating body 20. The plurality of first through holes are communicated with the air guide channel 11 of the air guide element 10, so that the air in the heating body 20 flows into the aerosol-generating article through the air guide channel 11 after being heated.
For example, the outer peripheral surface of the heating element 20 is provided with a plurality of grooves, when the heating element 20 is installed in the first installation cavity 12, the grooves and the inner surface of the first installation cavity 12 jointly form a ventilation air gap 21, the heating element 20 heats the air guiding element 10 and simultaneously directly heats the air flowing through the grooves, and a passage of the air is increased.
In some embodiments, referring to fig. 5 and 6, the heating element 20 is formed by a heating wire spiral, and the heating wire forms a plurality of ventilation air gaps 21 in the spiral process. It is understood that the heating element 20 may be partially or entirely spiral.
Specifically, the heat-generating body 20 may also be of a double-layer spiral structure. The first spiral layer 22 and the second spiral layer 23, second spiral layer 23 sets up outside first spiral layer 22, along the axial direction of the spiral central line of heat-generating body 20, the pitch of second spiral layer 23 is greater than the pitch of first spiral layer 22 to make the shape of heat-generating body 20 be the screw form, the inner wall face of first installation cavity 12 is provided with spiral fixed slot 123, spiral fixed slot 123 is used for with second spiral layer 23 screwed connection, so that heat-generating body 20 can be fixed in first installation cavity 12 directly, reduce the spare part of fixed heat-generating body 20, help reducing the volume of air current heating assembly 100.
For example, the heat generating body 20 is provided with a locking portion 24, and when the heat generating body 20 is inserted into the first mounting chamber 12, the locking portion 24 is locked with a locking groove of the first mounting chamber 12 to fix the heat generating body 20 in the first mounting groove. In some embodiments, the clamping groove is disposed at the cavity opening of the first mounting cavity 12, the clamping portion 24 is disposed at one end of the heating element 20, so that the heating element 20 and the first mounting cavity 12 are clamped only at the cavity opening, and the portion of the heating element 20 inserted into the first mounting cavity 12 can be directly attached to the inner surface of the first mounting cavity 12, so that heat loss of the heating element 20 is reduced.
In some embodiments, referring to fig. 6 and 8, the heating element 20 satisfies at least one of the following conditions:
(1) The diameter D4 of the heating element 20 satisfies: d4 is more than or equal to 1mm and less than or equal to 2mm;
(2) The diameter D4 of the heating element 20 satisfies: d4 is more than or equal to 1.4mm and less than or equal to 1.7mm;
(3) The area S2 enclosed by the outer contour of the cross section of the heat generating body 20 is: s2 is more than or equal to 0.7mm and less than or equal to 3.5mm 2 Wherein the cross section of the air guiding element 10 is perpendicular to the center line of the air guiding element 10; and
(4) The axial length L2 of the heating element 20 is: l2 is more than or equal to 4mm and less than or equal to 9mm.
In some embodiments, the heating body 20 may be made of at least one of a metal material, a metal alloy, graphite, carbon, a conductive ceramic, or a composite material of a ceramic material and a metal material having an appropriate resistance; suitable metals or alloy materials include at least one of nickel, cobalt, zirconium, titanium, nickel alloys, cobalt alloys, zirconium alloys, titanium alloys, nichrome, nickel-iron alloys, iron-chromium-aluminum alloys, titanium alloys, iron-manganese-aluminum alloys, stainless steel, or the like.
In some embodiments, referring to fig. 7, the airflow heating assembly 100 further includes a piercing heat generating element 30, the piercing heat generating element 30 is disposed at one end of the air guiding element 10, and the piercing heat generating element 30 is configured to pierce and insert into a tobacco segment of an aerosol-generating article to transfer heat generated by the heat generating element 20 into the aerosol-generating article.
The puncture-type heating element 30 comprises a puncture part 31 and a mounting part 32, one end of the mounting part 32 is connected with the air guide element 10, the other end of the mounting part 32 is connected with the puncture part 31, the puncture part 31 is used for puncturing the air inlet end of a tobacco section of an aerosol-generating product, a second mounting cavity 321 is arranged in the mounting part 32, the second mounting cavity 321 is communicated with the first mounting cavity 12, the heating element 20 is arranged in the first mounting cavity 12 and the second mounting cavity 321, and the heating element 20 is used for simultaneously heating the air guide element 10, the mounting part 32 and the puncture part 31. The side wall surface of the mounting portion 32 is provided with a through vent 322, and the vent 322 communicates the second mounting cavity 321 with the outside, so that when the puncture-type heating element 30 is inserted into the interior of the aerosol-generating article, the heated gas enters the second mounting cavity 321 from the first mounting cavity 12, and then passes through the vent 322 to enter the interior of the aerosol-generating article, thereby completing the process of heating the aerosol-generating article.
In some embodiments, referring to fig. 8, the airflow heating assembly 100 further includes a cover 40, where the cover 40 is disposed at the other end of the air guiding element 10, and the cover 40 is used to cooperate with the abutting portion 122 in the first mounting cavity 12 to fix the heating element 20 in the first mounting cavity 12. At least part of the cover 40 may be made of ceramic, and may be effectively insulated. Similarly, the contact portion may be formed by at least part of the air guide element 10, or may be formed by a heating element provided in the first mounting chamber 12.
In some embodiments, referring to fig. 8, the airflow heating assembly 100 further includes a heat preservation assembly 200, including an inner tube 202 and an outer tube 203, a housing cavity 201 is disposed inside the inner tube wall, and the inner tube wall may further be provided with a mounting structure matched with the air guiding element 10, so that the air guiding element 10 may be assembled inside the inner tube wall, and meanwhile, the aerosol generating product is closely fit and inserted into the housing cavity 201, the outer tube 203 is sleeved outside the inner tube 202, a cavity 204 is enclosed between the inner tube 202 and the outer tube 203, and the cavity 204 has a certain vacuum degree inside, or is filled with inert gas with low thermal conductivity, or is filled with solid medium or liquid medium with low thermal conductivity. It will be appreciated that "close to fit" means that it is desirable that the distance of the inner tube portion 202 from the aerosol-generating article is as small as possible, which facilitates the additional heating of the circumferential outer surface of the aerosol-generating article by the remaining temperature of the inner tube portion 202, which may supplement the baking of the outer surface of the aerosol-generating article to make the baking of the aerosol-generating article more complete and uniform, in particular the minimum distance of the inner tube portion 202 from the outer surface of the aerosol-generating article is within 1mm, preferably 0.5mm. The cavity 204 of the heat preservation assembly 200 can reduce the heat transferred from the inner pipe 202 to the outer pipe 203, so that the heat preservation assembly 200 also plays a role in heat insulation of the airflow heating assembly, no other heat insulation measures or assemblies are needed, cost reduction is facilitated, and structure simplification is facilitated.
In some embodiments, referring to fig. 9, the insulation assembly 200 may further comprise a single layer tube, such as a metal tube or a ceramic tube, to absorb part of the heat of the air guiding element 10 and convert the heat into supplementary heating of the aerosol-generating article, so as to quickly dissipate heat and reduce power consumption.
The air flow heating assembly 100 comprises an air guide element 10 and a heating body 20, wherein a first installation cavity 12 is formed in the air guide element 10, the air guide element 10 is provided with a plurality of through air guide channels 11, and the air guide channels 11 are used for air circulation; the heating body 20 is disposed in the first mounting cavity 12, and the heating body 20 is electrically connected to an external power source to heat the air guiding element 10, so that the air guiding element 10 heats the air flowing through the air guiding channel 11. By arranging the heating element 20 inside the air guide element 10, the problem that the traditional heating element 20 is sleeved outside the air guide element 10 to cause the heating element 20 to radiate part of heat outwards can be effectively solved, and the heating efficiency of the heating element 20 can be improved.
The present application also provides an embodiment of an aerosol-generating device 1000, referring to fig. 8, the aerosol-generating device 1000 for inserting an aerosol-generating article and heating the aerosol-generating article to generate an aerosol, the aerosol-generating device 1000 comprising a housing 200 and the above-described airflow heating assembly 100. The housing 200 is provided with a receiving cavity 201, at least part of the aerosol-generating article is removably arranged within the receiving cavity 201, the airflow heating assembly 100 is arranged in the receiving cavity 201, and the airflow heating assembly 100 is arranged at an upstream airflow position of the aerosol-generating article, so that air passing through the airflow heating assembly 100 is heated and then enters the interior of the aerosol-generating article for heating. Reference is made to the above-described embodiments for the function and structure of the airflow heating assembly 100.
In some embodiments, the housing may be a thermal shield, or a thermal shield may be provided inside the housing. For example, the heat insulating member is hollow and cylindrical, and can be made of a vacuum tube or a high-temperature resistant material such as Peek, aerogel and the like. The heat insulating piece can be used for reducing the heat transfer along the casing direction that the air current heating component produced, prevents that the outside of air current heating component from contacting the regional high temperature of user and scalding the user.
The foregoing description is only exemplary embodiments of the present application and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the present application.
Claims (24)
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 internally provided with a first mounting cavity and is provided with a plurality of through air guide channels for air circulation;
the heating body is arranged in the first mounting cavity and is used for being electrically connected with an external power supply to heat the air guide element, so that the air guide element heats air flowing through the air guide channel.
2. The air flow heating assembly of claim 1 wherein the diameter D1 of the air guide channel satisfies: d1 is more than 0 and less than or equal to 0.5mm; or alternatively
The diameter D2 of the first installation cavity satisfies: d2 is more than 0mm and less than or equal to 2.5mm.
3. The air flow heating assembly of claim 1 wherein the ratio of the total area of the cross-sections of the plurality of air guide channels to the area of the cross-section of the air guide element is greater than or equal to 1/5;
the cross section of the air guide channel is overlapped with the cross section of the air guide element, and the cross section of the air guide channel and the cross section of the air guide element are perpendicular to the central line of the air guide element.
4. The air flow heating assembly of claim 1 wherein a plurality of said air guide channels form a plurality of circles disposed around the center of said air guide element, wherein the distance between two adjacent air guide channels in the same circle is equal.
5. The airflow heating assembly of claim 4, wherein a ratio of the number of said air guide channels at the inner ring to the number of said air guide channels at the outer ring is equal to a ratio of a radius of the inner ring to a radius of the outer ring.
6. The air flow heating assembly of claim 1 wherein the air guide element meets at least one of the following conditions: the cross-sectional area S1 of the air guide element is: s1 is more than or equal to 10mm2 and less than or equal to 50mm 2 Wherein the cross section of the air guide element is perpendicular to the central line of the air guide element;
alternatively, the axial length L1 of the air guide element is: l1 is more than or equal to 5mm and less than or equal to 10mm.
7. The air flow heating assembly of claim 1 wherein the heater element meets at least one of the following conditions: the area S2 enclosed by the outer contour of the cross section of the heating element is as follows: s2 is more than or equal to 0.7mm and less than or equal to 3.5mm 2 Wherein the air guideThe cross section of the element is perpendicular to the central line of the air guide element;
alternatively, the axial length L2 of the heating element is: l2 is more than or equal to 4mm and less than or equal to 9mm.
8. The air flow heating assembly of claim 1 wherein the first mounting cavity satisfies at least one of:
the first installation cavity is arranged in the center of the air guide element;
the first mounting cavity penetrates through the air guide element; and
the first mounting cavity is a blind hole.
9. The airflow heating assembly of claim 1, wherein the number of heating elements is plural, the number of first mounting cavities is plural, and a plurality of heating elements are disposed in a plurality of first mounting cavities.
10. An air flow heating assembly as recited in claim 1 wherein the heater is at least partially disposed in close proximity between an outer surface of the heater and an inner surface of the first mounting cavity.
11. The air flow heating assembly of claim 1 wherein the heater has a ventilation air gap;
the ventilation air gap at least comprises a first hollow groove and/or a plurality of grooves;
wherein the first hollow groove is arranged in the heating body, at least the top of the first hollow groove is communicated with the air guide element, or at least the top of the first hollow groove is communicated with the bottom of the aerosol-generating product, or at least the side surface of the first hollow groove is communicated with the heating body to form a plurality of first through holes;
the groove is arranged on the outer peripheral surface of the heating body, and the groove and the inner surface of the first mounting cavity jointly form a ventilation air gap for air circulation.
12. An air flow heating assembly as recited in claim 11 wherein at least a portion of said heater is formed by a heater coil having a plurality of said ventilation air gaps formed therein.
13. The airflow heating assembly of claim 1, wherein the cross-section of the heating wire is rectangular in shape, wherein the cross-section of the heating wire is perpendicular to the direction of extension of the expanded heating wire; or alternatively
The heating element is in a sheet shape.
14. The air flow heating assembly according to claim 1, wherein the heating body is provided with a clamping portion, the inner surface of the first mounting cavity is provided with a clamping groove, and the heating body is clamped with the clamping groove of the first mounting cavity through the clamping portion so as to fix the heating body in the first mounting cavity.
15. An air flow heating assembly as recited in claim 1, further comprising a cover plate, at least one of the air guide element, the first mounting cavity inner wall, and/or the heat generating body being provided with an abutment to secure the heat generating body within the first mounting cavity.
16. An air flow heating assembly as recited in claim 1 wherein the axial length of said heater inserted into said first mounting cavity is at least 1/3 of the axial length of said air guide element.
17. The air flow heating assembly of claim 1, wherein the air guide element comprises a first air guide block and a second air guide block, the heater is disposed between the first air guide block and the second air guide block, and the first air guide block and the second air guide block are disposed to satisfy at least one of the following conditions:
the first air guide block and the second air guide block are arranged up and down along the extending direction of the central line of the air guide element;
the first air guide block and the second air guide block are arranged left and right along the extending direction perpendicular to the central line of the air guide element; and
the first air guide block is provided with a groove, and the second air guide block is sleeved in the groove.
18. The air flow heating assembly of claim 1, further comprising a puncture-type heating element disposed at one end of the air guide element, the air guide element having a first mounting cavity, the heating element disposed within the first mounting cavity, the heating element configured to heat the puncture-type heating element and the air guide element, the puncture-type heating element configured to be inserted into the aerosol-generating article to heat the aerosol-generating article.
19. The air flow heating assembly of claim 18, wherein the puncture-type heating element comprises a puncture part and a mounting part, one end of the mounting part is connected with the air guiding element, the puncture part is arranged at the other end of the mounting part, a second mounting cavity is arranged in the mounting part and is communicated with the first mounting cavity, and the heating element is arranged in the first mounting cavity and the second mounting cavity.
20. An air flow heating assembly as claimed in claim 19 wherein a vent is provided in a side wall of the piercing heating element in contact with the aerosol-generating article.
21. An air flow heating assembly as recited in claim 1, wherein,
the gas guide element is made of graphite or graphite alloy.
22. The airflow heating assembly of claim 1, further comprising a thermal insulation assembly coupled to the air guide element, the thermal insulation assembly having a receiving cavity therein for receiving the aerosol-generating article;
the heat preservation assembly comprises an inner pipe and an outer pipe, the accommodating cavity is formed in the inner pipe, the outer pipe is arranged around the inner pipe, a cavity is formed between the outer pipe and the inner pipe in a surrounding mode, and the inner pipe and the aerosol generating product are close to each other in a fitting mode;
or the heat preservation component is a single-layer pipe, the inside of the single-layer pipe is close to the gas-soluble generating product, and the single-layer pipe is a metal pipe or a ceramic pipe.
23. An airflow heating assembly for heating an aerosol-generating article to generate an aerosol, the airflow heating assembly comprising:
the air guide element is internally provided with a first mounting cavity and is provided with a plurality of through air guide channels for air circulation;
the resistance heating body is arranged in the first mounting cavity and is used for being electrically connected with an external power supply to heat the air guide element so that the air guide element heats the air flowing through the air guide channel;
wherein the gas guide element is made of graphite or graphite alloy.
24. An aerosol-generating device for heating an aerosol-generating article to produce an aerosol; the aerosol-generating device comprises:
a housing having a receiving cavity therein for removably disposing the aerosol-generating article;
an air flow heating assembly according to any one of claims 1 to 23, said air flow heating assembly being disposed within said receiving chamber, said air flow heating assembly being disposed at an upstream air flow position of said aerosol-generating article such that air passing through said air flow heating assembly enters said aerosol-generating article after being heated.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210802011.6A CN117397877A (en) | 2022-07-08 | 2022-07-08 | Airflow heating assembly and aerosol generating device |
| PCT/CN2023/103803 WO2024007941A1 (en) | 2022-07-08 | 2023-06-29 | Airflow heating assembly and aerosol generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210802011.6A CN117397877A (en) | 2022-07-08 | 2022-07-08 | Airflow heating assembly and aerosol generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117397877A true CN117397877A (en) | 2024-01-16 |
Family
ID=89454254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210802011.6A Pending CN117397877A (en) | 2022-07-08 | 2022-07-08 | Airflow heating assembly and aerosol generating device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN117397877A (en) |
| WO (1) | WO2024007941A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214127020U (en) * | 2020-09-22 | 2021-09-07 | 深圳市新宜康科技股份有限公司 | Double-heating low-temperature tobacco heating device |
| CN112089113A (en) * | 2020-10-13 | 2020-12-18 | 惠州市沛格斯科技有限公司 | Heating module and smoke generating device |
| CN112137179A (en) * | 2020-10-14 | 2020-12-29 | 深圳市艾溹技术研究有限公司 | Electronic cigarette heater, preparation method thereof and electronic cigarette |
| CN214802329U (en) * | 2020-10-14 | 2021-11-23 | 深圳市艾溹技术研究有限公司 | Electron cigarette heater and electron cigarette |
| KR102637742B1 (en) * | 2020-11-25 | 2024-02-19 | 주식회사 케이티앤지 | Aerosol generating device |
| CN217986690U (en) * | 2022-07-08 | 2022-12-09 | 深圳市合元科技有限公司 | Airflow heating assembly and aerosol generating device |
| CN115553507A (en) * | 2022-10-25 | 2023-01-03 | 四川三联新材料有限公司 | Airflow heating assembly and aerosol generating device |
-
2022
- 2022-07-08 CN CN202210802011.6A patent/CN117397877A/en active Pending
-
2023
- 2023-06-29 WO PCT/CN2023/103803 patent/WO2024007941A1/en unknown
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| Publication number | Publication date |
|---|---|
| WO2024007941A1 (en) | 2024-01-11 |
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