CN220109150U

CN220109150U - Aerosol generating device

Info

Publication number: CN220109150U
Application number: CN202320834890.0U
Authority: CN
Inventors: 卢志明; 陈伟; 杨森; 胡瑞龙; 徐中立; 李永海
Original assignee: Shenzhen FirstUnion Technology Co Ltd
Current assignee: Shenzhen FirstUnion Technology Co Ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-12-01
Anticipated expiration: 2033-04-11

Abstract

The present utility model provides an aerosol-generating device comprising: the battery cell is used for providing power; a chamber configured to removably receive an aerosol-generating article; a heater configured to receive power provided by the electrical core to generate heat to heat an aerosol-generating article received in the chamber; wherein the heater comprises at least one infrared radiation face configured to radiate infrared radiation and heat an aerosol-generating article received in the chamber. According to the aerosol generating device provided by the utility model, the infrared radiation area is increased through the uneven infrared radiation surface, the heating efficiency of the aerosol generating device is improved, and the energy consumption of the aerosol generating device is reduced.

Description

Aerosol generating device

Technical Field

The utility model relates to the technical field of electronic atomization, in particular to an aerosol generating device.

Background

Smoking articles such as cigarettes and cigars burn tobacco during use to produce smoke. Attempts have been made to provide alternatives to these tobacco-burning articles by creating products that release compounds without burning. An example of such a product is a so-called heated non-combustible product, which releases a compound by heating tobacco rather than burning tobacco.

In a conventional aerosol-generating device, the circumferential direction of an aerosol-forming substrate is heated simultaneously by peripheral heating. The device has the problems of low heating efficiency and high energy consumption.

Disclosure of Invention

The utility model provides an aerosol generating device, which is used for increasing the radiation area of the aerosol generating device, improving the heating efficiency and reducing the energy consumption.

The present utility model provides an aerosol-generating device comprising:

the battery cell is used for providing power;

a chamber configured to removably receive an aerosol-generating article;

a heater configured to receive power provided by the electrical core to generate heat to heat an aerosol-generating article received in the chamber;

wherein the heater comprises at least one infrared radiation face configured to radiate infrared radiation and heat an aerosol-generating article received in the chamber.

In an example, the infrared radiation face is configured to heat around at least a portion of the aerosol-generating article.

In one example, the heater includes a base defining a hollow portion inside the base defining at least part of the chamber, a proximal end of the base having a first opening for insertion of at least part of the aerosol-generating article into the hollow portion;

the infrared radiation face is defined as at least a portion of an inner surface of the substrate.

In one example, the substrate comprises a conductive ceramic, and the substrate is configured to receive power provided by the battery cell to generate heat and radiate the infrared light.

In one example, the inner surface of the base is provided with a plurality of ribs.

In an example, a circumferential diameter based on the bead fit is less than an outer diameter of the aerosol-generating article.

In one example, the aerosol-generating article has an outer diameter that differs from a circumferential diameter that is based on the bead fit by between 0.05mm and 0.5mm.

In one example, a groove is formed between two adjacent ribs.

In an example, a circumferential diameter based on the groove fit is greater than an outer diameter of the aerosol-generating article.

In one example, the difference between the circumferential diameter fitted based on the groove and the outer diameter of the aerosol-generating article is between 0.1mm and 1mm.

In one example, the ribs extend from the proximal end of the base to the distal end of the base.

In one example, the cross-sectional shape of the bead includes one of an arc, a rectangle, and a triangle.

In one example, the substrate is made of an infrared-transparent material;

the heater further includes an infrared emitting layer disposed on a surface of the substrate, the infrared emitting layer configured to radiate the infrared light to heat the aerosol-generating article through the substrate.

In one example, the outer surface of the substrate is configured to be rugged.

In one example, the distal end of the base has a second opening in communication with the hollow portion; alternatively, the distal end of the base is a closed end.

In one example, a guide surface is sloped near the proximal end of the base body to guide insertion of the aerosol-generating article into the hollow portion.

According to the aerosol generating device provided by the utility model, the infrared radiation area is increased through the uneven infrared radiation surface, the heating efficiency of the aerosol generating device is improved, and the energy consumption of the aerosol generating device is reduced.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures are not to scale, unless expressly stated otherwise.

Fig. 1 is a schematic view of an aerosol-generating device provided by an embodiment of the present utility model;

fig. 2 is a schematic view of an aerosol-generating device and an aerosol-generating article provided by an embodiment of the utility model;

FIG. 3 is a schematic diagram of a heater provided by an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a heater provided by an embodiment of the present utility model;

FIG. 5 is a schematic top view of a heater provided by an embodiment of the present utility model;

FIG. 6 is a schematic circumferential view of a bead and groove fit provided in an embodiment of the present utility model;

FIG. 7 is a schematic view of another heater provided by an embodiment of the present utility model;

FIG. 8 is a schematic view of yet another heater provided by an embodiment of the present utility model;

fig. 9 is a schematic top view of yet another heater provided in an embodiment of the present utility model.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. 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", "left", "right", "inner", "outer" and the like are used in this specification for illustrative purposes only.

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 utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Fig. 1-2 illustrate an aerosol-generating device 100 according to an embodiment of the present utility model, comprising a heating assembly 10, a chamber 20, a battery 30, an electrical circuit 40, and a housing assembly 50. The heating assembly 10, chamber 20, battery cell 30, and circuit 40 are all disposed within a housing assembly 50.

A heating assembly 10 for heating the aerosol-forming substrate to produce a smokable aerosol.

A chamber 20 for removably receiving an aerosol-forming substrate.

In an example, the aerosol-forming substrate may conveniently be part of the aerosol-generating article 200. An aerosol-forming substrate is a substrate capable of releasing volatile compounds that can form an aerosol. Such volatile compounds may be released by heating the aerosol-forming substrate. The aerosol-forming substrate may be solid or liquid or comprise solid and liquid components. The aerosol-forming substrate may be adsorbed, coated, impregnated or otherwise loaded onto a carrier or support.

The electrical core 30 provides electrical power for operating the aerosol-generating device 100. For example, the electrical cell 30 may provide electrical power for heating by the heating assembly 10. Further, the battery cell 30 may provide the electrical power needed to operate other elements provided in the aerosol-generating device 100. The battery cell 30 may be a rechargeable battery or a disposable battery.

The circuit 40 may control the overall operation of the aerosol-generating device 100. The circuit 40 controls not only the operation of the battery cell 30 and the heating assembly 10, but also the operation of other elements in the aerosol-generating device 100. For example: the circuit 40 obtains temperature information of the heating element 10 sensed by the temperature measuring element and controls the power provided by the battery cell 30 to the heating element 10 based on the information.

The heating assembly 10 includes a heater 101. As shown in fig. 3 to 5, a heater 101, the heater 101 includes:

the base 101a, including a proximal end a and a distal end B, extends over a surface between the proximal end a and the distal end B. The hollow portion of the interior of the base 101a is formed with a receiving chamber adapted to receive an aerosol-forming substrate, the receiving chamber defining at least part of the chamber 20. The proximal end a is provided with an opening through which the aerosol-generating article 200 may be inserted into the receiving chamber. When the aerosol-generating article 200 is inserted into the receiving chamber, the heater 101 may heat around at least a portion of the aerosol-generating article 200, known as circumferential heating or peripheral heating. In a preferred embodiment, a guiding surface may be provided near the proximal end a, the guiding surface being inclined towards the inside of the base body 101a. The provision of the guiding surface facilitates the smooth insertion of the aerosol-generating article 200 into the receiving chamber through the proximal end a, reducing the risk of slag fall. The distal end B may have an opening communicating with the receiving chamber, in which case the base 101a is generally tubular. The distal end B may be free of an opening, i.e., the distal end B is closed, and the base 101a may have a substantially cup-like or barrel-like shape.

The substrate 101a is made of conductive ceramic. The conductive ceramic substrate 101a can receive the power provided by the battery cell 30 to generate heat, and further generate infrared rays with a certain wavelength, for example: far infrared rays of 8-15 μm.

In one example, the matrix 101a of the conductive ceramic includes a host component including a first metal oxide and a dopant component including a second metal oxide, where the valence of the metal in the first metal oxide is different from the valence of the metal in the second metal oxide. Wherein the main component accounts for more than 80% and less than or equal to 98% of the mass of the conductive ceramic. Further, the doping component accounts for more than 0.5% and less than or equal to 19% of the mass of the conductive ceramic. In this embodiment, the metal in the second metal oxide gains enough energy into the crystal lattice of the first metal oxide to act as donor doping, i.e., to increase the carrier concentration by ion exchange at high temperature to achieve ceramic conduction.

In a specific example, the valence of the metal in the first metal oxide is less than the valence of the metal in the second metal oxide. Optionally, the valence of the metal in the second metal oxide is not less than 3.

When the main component comprises zinc oxide; the doping component comprises at least one of aluminum oxide, zirconium dioxide, titanium dioxide or niobium pentoxide. Wherein, the zinc oxide accounts for 94-98% of the conductive ceramic by mass; the doping component comprises aluminum oxide, and the aluminum oxide accounts for 0.5-5% of the conductive ceramic by mass.

Optionally, the conductive ceramic material comprises 94-98% zinc oxide, 0.8-5% aluminum oxide, 0-1% titanium dioxide, and 0-0.5% zirconium dioxide by mass.

It can be appreciated that the above-mentioned substrate 101a using conductive ceramics can reduce the area of the highest temperature hot spot, eliminate the risks of fatigue cracking and increase of fatigue resistance, and has better consistency; and the surface of the substrate 101a is easy to clean and difficult to adhere due to the high strength of the ceramic heating material and the smoothness caused by the microcrystalline structure.

In a preferred implementation, the inner surface of the base 101a of the conductive ceramic defines an infrared radiation surface, and the infrared radiation surface is configured as a rugged. Specifically, the inner surface of the base body 101a has a plurality of ribs 101a1 arranged at intervals, and a groove 101a2 is formed between two adjacent ribs 101a 1. In a further preferred embodiment, the plurality of ribs 101a1 are arranged at intervals along the circumferential direction of the base body 101 a; each rib 101a1 extends from a proximal end a to a distal end B, either axially or non-axially, for example helically. The cross-sectional shape of each rib 101a1 may be arc-shaped, rectangular, triangular or other regular shape, or may be irregular.

In the specific example of fig. 3-5, the bead 101a1 extends axially from the proximal end a to the distal end B, and has a cross-sectional shape that is generally circular arc-shaped (shown in fig. 5); the inner surface area of the conductive ceramic substrate 101a can be increased by 50% or more on the premise of the same equivalent thickness, so that the infrared emission amount of the inner surface of the substrate 101a during operation can be effectively increased, and the efficiency of heating the aerosol-generating article 200 by the substrate 101a can be further improved.

In a further preferred implementation, as shown in fig. 6, the circumferential diameter R1 fitted on the ribs 101a1 is slightly smaller than the outer diameter of the aerosol-generating article 200, e.g. the difference between the outer diameter of the aerosol-generating article 200 and the circumferential diameter R1 fitted on the ribs 101a1 is between 0.05mm and 0.5mm, which may be 0.1mm, 0.2mm, 0.3mm, 0.4mm, etc. In this way, when the aerosol-generating article 200 is placed in the receiving chamber, the ribs 101a1 on the inner surface of the aerosol-generating article 200 and the substrate 101a will be in an interference state, the ribs 101a1 are attached to the outer surface of the aerosol-generating article 200, the contact area between the substrate 101a and the aerosol-generating article 200 is increased, and the heat generated by the substrate 101a during operation can be directly conducted to the surface of the aerosol-generating article 200, so that the efficiency of heating the aerosol-generating article 200 by the substrate 101a can be further improved.

Since the aerosol-generating article 200 is in an interference state with the ribs 101a1 of the inner surface of the substrate 101a, the ribs 101a1 of the inner surface of the substrate 101a can provide the force required for the aerosol-generating article 200 to be clamped; that is, the ribs 101a1 on the inner surface of the base 101a can serve as a holding member, and the aerosol-generating device 100 does not need to be provided with a separate holding member, so that the structure of the aerosol-generating device 100 can be simplified, and the cost of the aerosol-generating device 100 can be reduced.

An air flow passage communicating with the outside is formed between the recess 101a2 and the aerosol-generating article 200. Specifically, when air flows into the substrate 101a from the opening of the proximal end a, the air can flow to the surface of the aerosol-generating article 200 along the track of the groove 101a2, which is beneficial to heating the aerosol-generating article 200, ensures uniformity of resistance to suction, and improves the user's suction experience. In a preferred implementation, as shown in fig. 6, the circumferential diameter R2 fitted on the groove 101a2 is slightly larger than the outer diameter of the aerosol-generating article 200, e.g. the difference between the circumferential diameter R2 fitted on the groove 101a2 and the outer diameter of the aerosol-generating article 200 is between 0.1mm and 1mm, which may be 0.2mm, 0.4mm, 0.6mm, 0.8mm, etc.

Electrodes including a first electrode 101b and a second electrode 101c disposed on the base 101a at intervals for feeding electric power supplied from the battery cell 30 to the base 101a of the conductive ceramic.

In the example of fig. 3 to 5, the first electrode 101b and the second electrode 101c are conductive coatings formed on the outer surface of the substrate 101a, the conductive coatings may be metal coatings or conductive tapes, etc., and the metal coatings may include silver, gold, palladium, platinum, copper, nickel, molybdenum, tungsten, niobium, or the above metal alloy materials. The first electrode 101B is disposed proximate the proximal end a and the second electrode 101c is disposed proximate the distal end B. The first electrode 101b and the second electrode 101c each extend in the circumferential direction of the base body 101a to form a ring-shaped electrode. The first electrode 101b and the second electrode 101c have a width of 0.5mm to 5mm and a thickness of 0.01 μm to 10 μm. In other examples, it is also possible that the first electrode 101b and the second electrode 101c are provided on the inner surface of the base body 101a.

In other examples, the first electrode 101b or the second electrode 101c may be wound in the circumferential direction of the base body 101a and have a non-closed ring shape, i.e., a ring shape with a notch. Alternatively, the first electrode 101B or the second electrode 101c may be wound in the circumferential direction of the base 101a and may be spiral, with the spiral electrode extending from the proximal end a to the distal end B. Alternatively, the first electrode 101b or the second electrode 101c may be partially wound in the circumferential direction of the base body 101a and may be in a non-closed ring shape or a closed ring shape, and the other portion may extend in the axial direction of the base body 101a, for example, may extend in a stripe shape.

In other examples, the number of the first electrodes 101b or the second electrodes 101c is not limited. For example, a plurality of first electrodes 101b and second electrodes 101c may be sequentially arranged at intervals along the axial direction of the base body 101 a; for example, in the axial direction from the proximal end a to the distal end B, the first electrode 101B is arranged, the second electrode 101c is arranged, the first electrode 101B is arranged, and the second electrode 101c is arranged, the above-described different heating regions can be simultaneously activated to heat by dividing the base body 101a using the conductive ceramics into different heating regions by the plurality of first electrodes 101B and the second electrodes 101c, each of which has a relatively small resistance value with respect to the entire base body 101a.

Fig. 7 shows another heater according to an embodiment of the present utility model, in which, unlike the examples of fig. 3 to 5, the electrode further includes a third electrode 101d disposed on the substrate 101a at intervals, i.e., the first electrode 101b, the second electrode 101c, and the third electrode 101d are all spaced apart from each other.

The first electrode 101b, the second electrode 101c, and the third electrode 101d divide the substrate 101a using the conductive ceramic into two independent heating regions along the axial direction of the substrate 101a. By controlling the two separate heating zones to initiate heating, heating of different regions of the aerosol-forming substrate may be achieved.

The above-described sectional heating is not limited to the sectional heating in the axial direction. In other examples, segmentation in the circumferential direction is also possible.

Fig. 8-9 illustrate yet another heater provided by an embodiment of the present utility model.

Unlike the examples of fig. 3-5, the substrate 1001a is made of a high temperature resistant and transparent material such as quartz glass, ceramic, or mica, and may be made of other materials having high infrared transmittance, for example: the high temperature resistant material having an infrared transmittance of 95% or more is not particularly limited herein.

Unlike the examples of fig. 3-5, the outer surface of the base 1001a is also configured to be rugged. The outer surface of the base 1001a has a plurality of ribs 1001a3 arranged at intervals along the circumferential direction of the base 1001a, and grooves 1001a4 are formed between adjacent ribs 1001a 3. Thus, the cross section of the base 1001a is substantially plum blossom-shaped by the ribs and grooves provided on the inner and outer surfaces of the base 1001 a.

Unlike the examples of fig. 3-5, the surface of the substrate 1001a is also formed with an infrared electrothermal coating 1002. The infrared electrothermal coating 1002 may be formed on the outer surface of the base 1001a or may be formed on the inner surface of the base 1001 a. The infrared electrothermal coating 1002 receives the power provided by the battery cell 30 to generate heat, and further generates infrared rays with a certain wavelength, for example: far infrared rays of 8-15 μm.

In a preferred implementation, infrared electrothermal coating 1002 is formed on the outer surface of substrate 1001a (as shown in the black portion of FIG. 8, it should be noted that only a portion of infrared electrothermal coating 1002 is shown for ease of understanding). The infrared ray generated by the infrared electrothermal coating 1002 passes through the substrate 1001a, and then heats the aerosol-generating article 200 placed in the receiving chamber, thereby generating a smokable aerosol.

Since the outer surface of the base 1001a is provided with the ribs and the grooves, the outer surface area of the base 1001a can be increased, for example, by 50% or more, with respect to a tubular base whose outer surface is smooth. Therefore, the application area of the infrared electrothermal coating 1002 can also be increased, thereby increasing the heating area of the heater and improving the efficiency of the substrate 1001a to heat the aerosol-generating article 200.

Similar to the example of fig. 3-5, the inner surface of the substrate 1001a is configured to be rugged, and the infrared radiation surface is defined as at least a portion of the inner surface of the substrate 1001 a. The inner surface of the base 1001a has a plurality of ribs 1001a1 arranged at intervals in the circumferential direction of the base 1001a, and grooves 1001a2 are formed between adjacent ribs 1001a 1. The ribs 1001a1 are attached to the outer surface of the aerosol-generating article 200, and heat generated by the substrate 1001a during operation can be directly transferred to the surface of the aerosol-generating article 200; the bead 1001a1 may serve as a clamping member. An air flow passage communicating with the outside is formed between the recess 1001a2 and the aerosol-generating article 200. Reference is made to fig. 6 and the foregoing, based on the fitted circumferential diameter of the ribs 1001a1 or grooves 1001a2.

Similar to the example of fig. 3-5, the surface of substrate 1001a is also formed with electrodes that remain in contact with infrared electrothermal coating 1002 to form an electrical connection. The electrode formed on the surface of the substrate 1001a may be a ring electrode as shown in fig. 3, or may be the aforementioned non-closed ring electrode, spiral electrode, electrode extending in the axial direction, or the like. Similar to the foregoing, the number of electrodes is not limited. The infrared electrothermal coating 1002 can be divided into different heating regions by a plurality of electrodes, and the different heating regions can be started to heat simultaneously, or the heating of the different regions of the aerosol-forming substrate can be realized by controlling the independent heating regions to start heating.

It will be appreciated that if infrared electrothermal coating 1002 is formed on the inner surface of substrate 1001a, it is also possible that the electrodes of substrate 1001a may be disposed on the inner surface of substrate 1001a or extend partially onto the outer surface of substrate 1001 a.

In an alternative example, the infrared electrothermal coating 1002 can be replaced with a thermally activated infrared radiation layer that generates infrared light of a wavelength upon receiving heat transferred from other components (e.g., resistive heating elements attached to the periphery of the infrared radiation layer), such as: far infrared rays of 8-15 μm. It is understood that the infrared emitting layer is not limited to the thermally activated infrared emitting layer, the electrically activated infrared electrothermal coating described above.

It should be noted that the description of the present utility model and the accompanying drawings illustrate preferred embodiments of the present utility model, but the present utility model may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, which are not to be construed as additional limitations of the utility model, but are provided for a more thorough understanding of the present utility model. The above-described features are further combined with each other to form various embodiments not listed above, and are considered to be the scope of the present utility model described in the specification; further, modifications and variations of the present utility model may be apparent to those skilled in the art in light of the foregoing teachings, and all such modifications and variations are intended to be included within the scope of this utility model as defined in the appended claims.

Claims

1. An aerosol-generating device, comprising:

the battery cell is used for providing power;

a chamber configured to removably receive an aerosol-generating article;

2. An aerosol-generating device according to claim 1, wherein the infrared radiation face is configured to heat around at least a portion of the aerosol-generating article.

3. An aerosol-generating device according to claim 1, wherein the heater comprises a base body, a hollow portion inside the base body defining at least part of the chamber, a proximal end of the base body having a first opening for insertion of at least part of the aerosol-generating article into the hollow portion;

4. An aerosol-generating device according to claim 3, wherein the substrate comprises a conductive ceramic, the substrate being configured to receive power provided by the electrical cell to generate heat and to radiate the infrared radiation.

5. An aerosol-generating device according to claim 3, wherein the inner surface of the base body is provided with a plurality of ribs.

6. An aerosol-generating device according to claim 5, wherein a circumferential diameter fitted based on the ribs is smaller than an outer diameter of the aerosol-generating article.

7. An aerosol-generating device according to claim 6, wherein the difference between the outer diameter of the aerosol-generating article and the circumferential diameter fitted on the basis of the ribs is in the range 0.05mm to 0.5mm.

8. An aerosol-generating device according to claim 5, wherein a groove is formed between two adjacent ribs.

9. An aerosol-generating device according to claim 8, wherein a circumferential diameter fitted based on the grooves is larger than an outer diameter of the aerosol-generating article.

10. An aerosol-generating device according to claim 9, wherein the difference between the diameter of the circumference fitted based on the groove and the outer diameter of the aerosol-generating article is in the range 0.1mm to 1mm.

11. An aerosol-generating device according to claim 5, wherein the bead extends from the proximal end of the base to the distal end of the base.

12. An aerosol-generating device according to claim 11, wherein the cross-sectional shape of the bead comprises one of an arc, a rectangle, a triangle.

13. An aerosol-generating device according to claim 3, wherein the substrate is made of an infrared-transparent material;

14. An aerosol-generating device according to claim 3, wherein the outer surface of the substrate is configured to be rugged.

15. An aerosol-generating device according to claim 3, wherein the distal end of the base body has a second opening in communication with the hollow portion; alternatively, the distal end of the base is a closed end.

16. An aerosol-generating device according to claim 3, wherein a proximal end adjacent the base body has an inclined guiding surface to guide insertion of the aerosol-generating article into the hollow portion.