CN216701668U - Aerosol generating device - Google Patents
Aerosol generating device Download PDFInfo
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- CN216701668U CN216701668U CN202122842023.5U CN202122842023U CN216701668U CN 216701668 U CN216701668 U CN 216701668U CN 202122842023 U CN202122842023 U CN 202122842023U CN 216701668 U CN216701668 U CN 216701668U
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Abstract
The present application relates to the field of smoking articles, and provides an aerosol-generating device comprising a chamber for removably receiving an aerosol-forming article; a heater for heating an aerosol-forming article received in the chamber to generate an aerosol; the composite heat insulation piece at least partially surrounds the periphery of the heater and forms an air cavity with the heater in a spaced mode, and the composite heat insulation piece is used for reducing heat conduction of the heater to the periphery; wherein the composite insulation element comprises a first insulation layer of a non-metallic material and a second insulation layer bonded to the first insulation layer. This application reduces the heat of heater toward peripheral conduction through compound heat insulating part, has avoided the casing high temperature of aerosol generation device to lead to the user to have the sensation of scalding one's hand, has promoted user's experience.
Description
Technical Field
The application relates to the technical field of smoking articles, in particular to an aerosol generating device.
Background
Smoking articles such as cigarettes and cigars burn tobacco during use to produce an aerosol. 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 heat not burn product, which releases compounds by heating tobacco instead of burning tobacco.
When the existing smoking set which is not heated and combusted is smoked, the temperature of the shell is high, so that a smoker feels hot to the hand, and the experience of the user is influenced. In order to avoid the problem, a vacuum tube is generally used for heat insulation, and the characteristic of low heat conductivity coefficient of the vacuum is utilized to reduce the outward transmission of heat in the heating cavity. However, because of the high vacuum degree inside the vacuum tube, the tube wall needs to bear the pressure difference between the inside and the outside, so the thickness of the tube wall of the vacuum tube is large, the cost is high, and the material selection has certain limitations.
SUMMERY OF THE UTILITY MODEL
The application provides an aerosol generating device, aims at solving the thermal-insulated problem of smoking set.
The present application provides an aerosol-generating device comprising:
a chamber for removably receiving an aerosol-forming article;
a heater for heating an aerosol-forming article received in the chamber to generate an aerosol;
the composite heat insulation piece at least partially surrounds the periphery of the heater and forms an air cavity with the heater at intervals, and the composite heat insulation piece is used for reducing heat conduction of the heater to the periphery;
wherein the composite insulation element comprises a first insulation layer of a non-metallic material and a second insulation layer bonded to the first insulation layer.
In an example, the first insulation layer includes an insulation tube extending in an axial direction of the chamber, the insulation tube being for supporting the second insulation layer.
In one example, the material of the insulating tube comprises copolycarbonate.
In one example, the insulating tube is non-transparent.
In one example, the second insulating layer includes an aerogel layer bonded to the insulating tube surface.
In one example, the second layer of insulation faces away from the heater as compared to the first layer of insulation, and the second layer of insulation has a greater thickness than the first layer of insulation.
In an example, the thermal conductivity of the second thermal barrier material is less than the thermal conductivity of the first thermal barrier material.
In one example, the axial extension of the composite insulation is greater than the axial extension of the heater.
In one example, the air chamber extends in an axial direction of the chamber and surrounds at least part of the chamber.
In one example, the heater further comprises a first end cover and a second end cover, wherein the first end cover is arranged at one end of the heater, and the second end cover is arranged at the other end of the heater;
the heater, the composite thermal shield, the first end cap, and the second end cap define the air chamber therebetween.
In one example, the first end cap has a first extension extending outwardly in a radial direction of the chamber, and the second end cap has a second extension extending outwardly in the radial direction of the chamber;
and two ends of the composite heat insulation piece are respectively abutted against the first extension part and the second extension part.
In an example, further comprising a first seal and a second seal;
the first sealing member is disposed between one end of the heater and the first end cap, and the second sealing member is disposed between the other end of the heater and the second end cap.
In one example, the heater includes:
a substrate having a surface;
an infrared emitter disposed on the surface; the infrared emitter is for generating infrared light to radiatively heat an aerosol-forming article received in the chamber.
The application provides an aerosol generation device, through the heat toward peripheral conduction of compound heat insulating part reduction heater, avoided aerosol generation device's casing high temperature to lead to the user to have the sensation of scalding one's hand, promoted user's experience.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Figure 1 is a schematic diagram of an aerosol-generating device provided by an embodiment of the present application;
figure 2 is a schematic cross-sectional view of an aerosol-generating device provided by an embodiment of the present application;
FIG. 3 is a schematic view of a heater provided by an embodiment of the present application;
FIG. 4 is a schematic view of an electrode connection provided by an embodiment of the present application;
figure 5 is a schematic cross-sectional view of part of a device in an aerosol-generating device provided in an embodiment of the present application;
FIG. 6 is a schematic view of a first end cap provided by an embodiment of the present application;
FIG. 7 is a schematic view of a second end cap provided by an embodiment of the present application;
FIG. 8 is a schematic view of a composite insulation provided by an embodiment 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 accompanying drawings and 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 also 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. The terms "upper", "lower", "left", "right", "inner", "outer" and the like as used herein are 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 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 present application. As used herein, the term "and/or" 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 disclosure, including:
the case 10 has an accommodating space therein, and the heater 12, the battery cell 13, the circuit 14, and the like are accommodated in the case 10.
A chamber 11 for receiving an aerosol-forming article.
A heater 12 for generating infra-red light to radiatively heat aerosol-forming articles received in the chamber 11.
The cells 13 provide power for operating the aerosol-generating device 100. For example, the cells 13 may provide power to heat the heater 12. Furthermore, the cells 13 may provide the power required to operate other elements provided in the aerosol-generating device 100. The cells 13 may be rechargeable batteries or disposable batteries.
The circuit 14 may control the overall operation of the aerosol-generating device 100. The circuit 14 controls not only the operation of the cell 13 and the heater 12, but also the operation of other elements in the aerosol-generating device 100. For example: the circuit 14 acquires temperature information of the heater 12 sensed by the temperature sensor, and controls the electric power supplied to the heater 12 from the battery cell 13 according to the information.
Fig. 3 is a heater 12 according to an embodiment of the present application, where the heater 12 includes:
the base body 121 is configured in a tubular shape extending in the axial direction of the chamber 11 and surrounding the chamber.
In particular, the substrate 121 includes a first end (or proximal end) and a second end (or distal end), a surface extending between the first end and the second end. The substrate 121 may be cylindrical, prismatic, or other cylindrical shape. The substrate 121 is preferably cylindrical and a cylindrical bore extending through the centre of the substrate 121 forms at least part of the chamber 11, the bore having an internal diameter slightly larger than the external diameter of the aerosol-forming article to facilitate the aerosol-forming article being placed in the chamber to heat it.
The substrate 121 may be made of a transparent material such as quartz glass, ceramic or mica, which is resistant to high temperature, or 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.
An infrared electrothermal coating 122 is formed on the surface of the substrate 121. The infrared electrothermal coating 122 may be formed on the outer surface of the substrate 121, or may be formed on the inner surface of the substrate 121. The infrared electrothermal coating 122 receives electric power to generate heat, and further generates infrared rays with certain wavelengths, such as: 8-15 μm far infrared ray. When the wavelength of the infrared light matches the absorption wavelength of the smokable material within the aerosol-forming article, the energy of the infrared light is readily absorbed by the aerosol-forming article. The wavelength of the infrared ray is not limited, and may be an infrared ray of 0.75 to 1000. mu.m, preferably a far infrared ray of 1.5 to 400 μm.
And a conductive element including a first electrode 123 and a second electrode 124 spaced apart on the substrate 121 for feeding the electric power to the infrared electrothermal coating 122.
The first electrode 123 and the second electrode 124 are each at least partially in electrical communication with the infrared electro-thermal coating 122 such that current can flow from one electrode to the other electrode via the infrared electro-thermal coating 122. The first electrode 123 and the second electrode 124 are opposite in polarity, for example: the first electrode 123 is a positive electrode, and the second electrode 124 is a negative electrode. In a preferred embodiment, the first electrode 123 and the second electrode 124 are both conductive coatings, the conductive coatings may be metal coatings or conductive tapes, and the metal coatings may include silver, gold, palladium, platinum, copper, nickel, molybdenum, tungsten, niobium, or metal alloy materials thereof.
The first electrode 123 and the second electrode 124 are symmetrically disposed along a central axis of the substrate 121. The first electrode 123 includes a coupling electrode 1231 extending in a circumferential direction of the base 121 and a bar-shaped electrode 1232 extending from the coupling electrode 1231 toward a proximal axial direction of the base 121. The second electrode 124 includes a coupling electrode 1241 extending in a circumferential direction of the base 121 and a bar-shaped electrode 1242 extending from the coupling electrode 1241 toward a proximal axial direction. Neither coupling electrode 1231 nor coupling electrode 1241 is in contact with ir electrothermal coating 122, and both bar-shaped electrodes 1232 and 1242 are at least partially in contact with ir electrothermal coating 122 to form electrical connections.
From the foregoing, the distribution distance between the strip-shaped electrode 1232 and the strip-shaped electrode 1242 is uniform, so that the infrared electrothermal coating 122 can be ensured to be uniformly heated, and the heating efficiency of the smoking set is improved. The arrangement of the coupling electrode 1231 and the coupling electrode 1241 facilitates coupling with the battery cell 13, and avoids the problem that a wire connected at one end needs to pass through a heating area, which leads to easy damage of the wire.
It should be noted that the infrared emitter composed of the infrared electrothermal coating 122, the first electrode 123 and the second electrode 124 is not limited to the example of fig. 3. In other examples, the infrared emitter may be formed from a thermally-excited infrared radiation layer, or from a thin film construction that may be wound on the substrate 121, or the like.
It should also be noted that in other examples, the heater 12 may also be resistive heating, electromagnetic heating, or the like. The heater 12 may be a circumferential heating system or a center heating system.
Fig. 4 is a schematic view of an electrode connection provided in an embodiment of the present application.
The aerosol-generating device 100 further comprises two electrode connections, two electrode connections 125 being electrically connected with the first electrode 123 and the second electrode 124, respectively, and extending the first electrode 123 and the second electrode 124, respectively, to a position remote from the substrate 121.
The following description will be given taking the electrode connecting member 125 electrically connected to the first electrode 123 as an example:
the electrode connector 125 includes a contact portion and an extension 1253. The contact portion includes a body 1251 and four cantilevers 1252 hollowed out on the body 1251, the four cantilevers 1252 are spaced apart from each other along the circumferential direction of the base 121, and the number of the cantilevers 1252 is not limited. When the four cantilevers 1252 abut against the coupling electrode 1231, an elastic force can be generated, which is beneficial to realizing the electrical connection with the coupling electrode 1231; the extension 1253 extends from the body 1251 toward a position away from the base 121, and the extension 124 is used to couple the battery cell 13.
Referring to fig. 5-7, the aerosol-generating device 100 further includes a first end cap 16 sleeved on the first end of the base 121, a second end cap 17 sleeved on the second end of the base 121, and a composite thermal insulation member 15 sleeved outside the base 121.
The first end cover 16 and the second end cover 17 are made of insulating, high-temperature-resistant and heat-insulating materials.
As shown in fig. 6, the first end cap 16 includes a hollow tube 161, an extension portion 162 extending outward in the radial direction of the chamber 11 from one end of the hollow tube 161, and a holding portion 163 extending in the axial direction from the extension portion 162. When the base 121 is provided to the first end cap 16, the holding portion 163 abuts on the outer surface of the base 121 to hold the first end portion of the base 121. The ends of the composite insulation 15 may abut against the extensions 162.
As shown in fig. 7, the second end cap 17 includes an inner cylinder 171 and an outer cylinder 172, and the base 121 is detachably fitted between an outer wall of the inner cylinder 171 and an inner wall of the outer cylinder 172.
The inner cylinder 171 has a hollow tubular shape, and the air flow flows through the inner cylinder 171 toward the chamber 11. The length of the inner cylinder 171 in the axial direction is slightly longer than the length of the coupling electrode 1231 or the coupling electrode 1241 in the axial direction. The outer wall of the outer cylinder 172 is provided with a plurality of abutting parts 1721 which are distributed circumferentially and extend towards the composite heat insulation piece 15, the end part of the outer cylinder 172 is provided with an extending part 1722 which extends outwards along the radial direction of the cavity 11, and the abutting parts 1721 and the extending parts 1722 are arranged to be convenient to assemble with the composite heat insulation piece 15, so that the end part of the composite heat insulation piece 15 can abut against the extending part 1722. The inner wall of the outer cylinder 172 further has a plurality of holding portions 1723 spaced apart from each other, the holding portions 1723 extend from the inner wall of the outer cylinder 172 toward the inner cylinder 171, and when the base 121 is disposed on the second end cap 17, the holding portions 1723 abut against the outer surface of the base 121 to hold the second end of the base 121.
The second end cap 17 is further provided with a circumferential stopping portion for preventing the base body 121 from rotating, the circumferential stopping portion includes a positioning protrusion 173 protruding from one side of the second end cap 17 facing the base body 121, and a positioning notch corresponding to the positioning protrusion 173 is formed in a tube wall of the base body 121. When the base 121 is sleeved on the second end cap 17, the positioning protrusion 173 is correspondingly matched with the positioning notch to prevent the base 121 from rotating circumferentially relative to the second end cap 17. A through hole 174 for leading out the extension 1253 of the electrode connector 125 is also provided on the second end cap 17.
Further, a first sealing element 18 can be arranged between the first end cover 16 and the first end of the base body 121, and a second sealing element 19 can be arranged between the second end cover 17 and the second end of the base body 121, so that smoke generated in the base body 121 can be prevented from entering a space between the outer surface of the base body 121 and the composite heat insulation element 15, the infrared electrothermal coating 122 and the conductive coating on the outer surface of the base body 121 can be corroded, and the working reliability of the heater 12 can be improved.
After the base 121, the first end cap 16, the second end cap 17 and the composite thermal insulation element 15 are assembled together, since the two ends of the composite thermal insulation element 15 abut on the extensions 162 and 1722, air cavities are defined between the outer surface of the base 121, the first end cap 16, the second end cap 17 and the composite thermal insulation element 15, and extend along the axial direction of the cavity 11 and surround at least part of the cavity 11. The air chamber may reduce the flow of air inside and outside the air chamber, thereby reducing the transfer of heat from the heater 12 out of the aerosol-generating device 100.
A composite insulation 15 at least partially surrounds the heater 12. The composite insulation 15 comprises a first layer of non-metallic material and a second layer of insulation bonded to the first layer of insulation, the second layer of insulation facing away from the heater 12 compared to the first layer of insulation.
Specifically, as shown in fig. 8, the first adiabatic layer includes an adiabatic tube 151 extending in the axial direction of the chamber 11, and the adiabatic tube 151 is used to support the second adiabatic layer. The second insulation layer includes an aerogel layer 152 bonded to the outer surface of the insulation tube 151. In a preferred embodiment, the aerogel layer 152 may be adhered by a silicone adhesive, fixed on the outer sidewall of the heat insulation tube 151 by a high temperature resistant teflon tape, wound by a polyimide tape, or directly coated on the outer sidewall of the heat insulation tube 151 by an aerogel solution.
The heat insulation pipe 151 is made of polycarbonate (PC-HT), which is a reinforced polycarbonate having a heat resistance as high as about 260 ℃ and close to PEEK (polyetheretherketone); the copolycarbonate has a thermal conductivity (thermal conductivity) of about 0.2W/(m.K) which is about one-third lower than that of PEEK, and therefore has excellent heat insulating properties and effects. The copolycarbonate has the advantages of high toughness and fluidity, capability of injection molding and extrusion molding, convenient processing and low cost; in addition, the coating also has good corrosion resistance and safety. In a preferred implementation, the insulating tube 151 is non-transparent; the heat-insulating material can be prepared by adding black toner during processing, so that the heat-insulating property of the heat-insulating material is further improved. The thickness of the heat insulation pipe 151 is 0.1mm to 3 mm.
The aerogel layer 152 is preferably a high temperature resistant aerogel (the aerogel is baked at a high temperature of over 300 ℃ for a long time, has high temperature resistance, and generates no toxic and harmful gas within the range of the use temperature of the smoking set). The aerogel layer 152 has a thickness of 0.1mm to 10mm, and in a preferred embodiment, the aerogel layer 152 has a thickness greater than that of the insulating tube 151. The aerogel has a very low thermal conductivity coefficient of about 0.018-0.022W/(m.K), so that the aerogel has good heat insulation performance and effect.
It should be noted that the description of the present application and the accompanying drawings set forth preferred embodiments of the present application, however, the present application may be embodied in many different forms and is not limited to the embodiments described in the present application, which are not intended as additional limitations to the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. Moreover, the above-mentioned technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope described in the present specification; further, modifications and variations may occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.
Claims (13)
1. An aerosol-generating device, comprising:
a chamber for removably receiving an aerosol-forming article;
a heater for heating an aerosol-forming article received in the chamber to generate an aerosol;
the composite heat insulation piece at least partially surrounds the periphery of the heater and forms an air cavity with the heater at intervals, and the composite heat insulation piece is used for reducing heat conduction of the heater to the periphery;
wherein the composite insulation element comprises a first insulation layer of a non-metallic material and a second insulation layer bonded to the first insulation layer.
2. An aerosol-generating device according to claim 1, wherein the first insulating layer comprises an insulating tube extending in an axial direction of the chamber for supporting the second insulating layer.
3. An aerosol-generating device according to claim 2 in which the material of the insulating tube comprises copolycarbonate.
4. An aerosol-generating device according to claim 2, wherein the insulating tube is non-transparent.
5. An aerosol-generating device according to claim 2, wherein the second insulating layer comprises an aerogel layer bonded to the insulating tube surface.
6. An aerosol-generating device according to claim 1, wherein the second insulating layer faces away from the heater compared to the first insulating layer, and the second insulating layer has a greater thickness than the first insulating layer.
7. An aerosol-generating device according to claim 1, wherein the thermal conductivity of the second thermal barrier material is less than the thermal conductivity of the first thermal barrier material.
8. An aerosol-generating device according to claim 1, wherein the axial extent of the composite insulating member is greater than the axial extent of the heater.
9. An aerosol-generating device according to claim 1, wherein the air chamber extends in an axial direction of the chamber and surrounds at least part of the chamber.
10. An aerosol-generating device according to claim 1, further comprising a first end cap disposed at one end of the heater and a second end cap disposed at the other end of the heater;
the heater, the composite thermal shield, the first end cap, and the second end cap define the air chamber therebetween.
11. An aerosol-generating device according to claim 10, wherein the first end cap has a first extension extending outwardly in a radial direction of the chamber and the second end cap has a second extension extending outwardly in the radial direction of the chamber;
and two ends of the composite heat insulation piece are respectively abutted against the first extension part and the second extension part.
12. An aerosol-generating device according to claim 10, further comprising a first seal and a second seal;
the first sealing member is disposed between one end of the heater and the first end cap, and the second sealing member is disposed between the other end of the heater and the second end cap.
13. An aerosol-generating device according to claim 1, wherein the heater comprises:
a substrate having a surface;
an infrared emitter disposed on the surface; the infrared emitter is for generating infrared light to radiatively heat an aerosol-forming article received in the chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122842023.5U CN216701668U (en) | 2021-11-19 | 2021-11-19 | Aerosol generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122842023.5U CN216701668U (en) | 2021-11-19 | 2021-11-19 | Aerosol generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216701668U true CN216701668U (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122842023.5U Active CN216701668U (en) | 2021-11-19 | 2021-11-19 | Aerosol generating device |
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| CN (1) | CN216701668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024008162A1 (en) * | 2022-07-08 | 2024-01-11 | 深圳市合元科技有限公司 | Heating device, aerosol generating device, and aerosol generating system |
-
2021
- 2021-11-19 CN CN202122842023.5U patent/CN216701668U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024008162A1 (en) * | 2022-07-08 | 2024-01-11 | 深圳市合元科技有限公司 | Heating device, aerosol generating device, and aerosol generating system |
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