Aerosol generation device

Abstract

The present application provides an aerosol generating device, comprising: a chamber used for receiving a vapable material; and a first infrared emitter and a second infrared emitter which are configured to radiate infrared rays to the chamber so as to heat the vapable material and generate an aerosol. The first infrared emitter or the second infrared emitter comprises: a substrate having a first surface facing the chamber and a second surface facing away from the chamber; an infrared emitting coating formed on the first surface; and conductive coatings including a first conductive coating and a second conductive coating which are spaced from each other, wherein the first conductive coating or the second conductive coating comprises a first part of conductive coating formed on the second surface. According to the aerosol generating device, the radiated infrared rays can directly act on the vapable material without passing through an infrared window; in addition, the outward radiation of the infrared rays can be effectively reduced, minimizing energy loss.

Description

Aerosol generating device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202420242115.0, filed with the Patent Office of China on January 31, 2024, entitled “Aerosol Generating Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of aerosol generation, and in particular to an aerosol generating device. Background Art

[0004] Smoking articles such as cigarettes and cigars burn tobacco to produce smoke during use. Attempts have been made to provide alternatives to these tobacco-burning articles by creating products that release compounds without burning them. Examples of such products are so-called heat-not-burn products, which release compounds by heating the tobacco rather than burning it.

[0005] As another example, there are infrared heating devices that heat tobacco products by means of infrared radiation to release compounds to generate aerosols. For example, the patent application number 202010048160.9, which is a known technology, proposes an aerosol generating device, in which a first infrared emitter and a second infrared emitter are arranged relative to each other and define a chamber having a dimension in a first radial direction that is smaller than a dimension in a second radial direction, thereby improving the ability and efficiency of the smokeable material to absorb infrared rays, so that the surface and interior of the smokeable material can be heated relatively evenly. The problem with the known technology is that more infrared rays are radiated outward, resulting in greater energy loss.

[0006] Application Contents

[0007] The embodiment of the present application provides an aerosol generating device, which can effectively reduce the outward radiation of infrared rays and reduce energy loss while fully utilizing the infrared heating effect.

[0008] Based on the above, an embodiment of the present application provides an aerosol generating device, comprising:

[0009] a chamber for receiving a smokeable material;

[0010] a first infrared emitter and a second infrared emitter configured to radiate infrared light into the chamber to heat the smokeable material and generate an aerosol;

[0011] Wherein, the first infrared emitter or the second infrared emitter includes:

[0012] a substrate having a first surface facing the chamber and a second surface facing away from the chamber;

[0013] an infrared emitting coating formed on the first surface;

[0014] The conductive coating comprises a first conductive coating and a second conductive coating arranged at intervals; the first conductive coating or the second conductive coating comprises a first portion of the conductive coating formed on the second surface.

[0015] In one example, the first conductive coating layer or the second conductive coating layer further includes a second portion of the conductive coating layer formed on the first surface, and the second portion of the conductive coating layer is in contact with the infrared emitting coating layer to form an electrical connection.

[0016] In one example, an area of ​​the second portion of the conductive coating is smaller than an area of ​​the first portion of the conductive coating.

[0017] In one example, the first conductive coating or the second conductive coating further includes a third conductive coating, which is arranged on an end surface of one end of the substrate and is in contact with the first conductive coating and the second conductive coating.

[0018] In one example, a radiation layer is formed on the surface of the infrared emitting coating.

[0019] In one example, the radiation layer includes a glass glaze made of silicon oxide or boron oxide.

[0020] In one example, the substrate is made of a material that transmits infrared rays or a metal material with surface insulation treatment.

[0021] In one example, the base body is configured as a sheet-like structure.

[0022] In one example, the first infrared emitter and the second infrared emitter are separated from each other.

[0023] In one example, the chamber has a first direction and a second direction perpendicular to the first direction;

[0024] The first infrared emitter and the second infrared emitter are arranged along the first direction, and the first infrared emitter and the second infrared emitter extend at least partially along the second direction, thereby defining the cavity between the first infrared emitter and the second infrared emitter, and making the size of the cavity along the second direction larger than the size along the first direction.

[0025] In one example, the chamber has a first direction and a second direction perpendicular to the first direction, and the first infrared emitter and the second infrared emitter are arranged along the first direction;

[0026] The first infrared emitter is configured to be movable relative to the second infrared emitter along the first direction so as to change the size of the chamber along the first direction.

[0027] In one example, the device further includes a holder configured to hold the first infrared emitter and / or the second infrared emitter.

[0028] In the above aerosol generating device, the infrared emitting coating of the first infrared emitter or the second infrared emitter is formed on the surface of the substrate facing the chamber, so that the radiated infrared rays can directly act on the inhalable material without passing through the infrared window; and the partial conductive coating of the first infrared emitter or the second infrared emitter is formed on the surface of the substrate facing away from the chamber. This partial conductive coating also acts as a reflective layer, which can reflect the radiated infrared rays, thereby effectively reducing the outward radiation of infrared rays and reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0030] FIG1 is a schematic diagram of an aerosol generating device provided in an embodiment of the present application;

[0031] FIG2 is a schematic diagram of a heating mechanism provided in an embodiment of the present application;

[0032] FIG3 is a schematic diagram of a heating mechanism and a cigarette provided in an embodiment of the present application;

[0033] FIG4 is a schematic top view of FIG2 ;

[0034] FIG5 is a side view schematic diagram of an infrared emitter provided in an embodiment of the present application;

[0035] FIG6 is a front view schematic diagram of an infrared emitter provided in an embodiment of the present application;

[0036] FIG7 is a rear view schematic diagram of an infrared emitter provided in an embodiment of the present application;

[0037] FIG8 is a schematic diagram of another heating mechanism and a cigarette provided in an embodiment of the present application;

[0038] FIG9 is a schematic diagram of another heating mechanism and a cigarette provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific implementation methods.

[0040] One embodiment of the present application provides an aerosol generating device that heats, rather than burns, a smokeable material such as a cigarette, thereby volatilizing or releasing at least one component of the smokeable material to form an aerosol for inhalation.

[0041] In a preferred embodiment, the aerosol generating device heats the inhalable material by radiating far-infrared rays having a heating effect; for example, far-infrared rays of 3 μm to 15 μm. During use, when the wavelength of the infrared rays matches the absorption wavelength of the volatile components of the inhalable material, the energy of the infrared rays is easily absorbed by the inhalable material, and the inhalable material is heated to volatilize at least one volatile component, thereby generating an aerosol for inhalation.

[0042] The structure of an aerosol generating device according to an embodiment of the present application can be seen in FIG1 . The overall appearance of the device is generally configured as a flat cylinder. The external components of the aerosol generating device include:

[0043] The housing 10 is hollow inside, thereby forming an assembly space for necessary functional components such as infrared radiation; the housing 10 has a proximal end 110 and a distal end 120 opposite to each other along the length direction; wherein,

[0044] The proximal end 110 is provided with a receiving hole 111 , through which the smokable material A, for example, a cylindrical cigarette with a circular cross-section, can be received in the housing 10 for heating or removed from the housing 10 .

[0045] In order to heat the smokeable material A received in the housing 10 by radiating infrared rays, an infrared emitter 20 for heating is further provided in the housing 10. The structure of one embodiment thereof can be seen in Figures 2 to 7, and includes:

[0046] A chamber 30 for receiving the smokeable material A is provided in the housing 10;

[0047] The infrared emitter 20 includes a first infrared emitter 21 and a second infrared emitter 22, which are arranged around the chamber 30. The emitter 20 is configured to radiate infrared light into the chamber 30 to heat the inhalable material and generate an aerosol. Specifically, as shown in the figure, the structure and content of the first infrared emitter 21 and the second infrared emitter 22 are identical, and both include the following components (using the first infrared emitter 21 as an example):

[0048] The substrate 211, serving as a rigid support material, can be made of a high-temperature-resistant and infrared-transparent material such as quartz, ceramics (e.g., zirconium oxide, aluminum oxide), or mica. It can also be made of a metal material with a surface insulation treatment. The substrate 211 has a first surface facing the chamber 30 and a second surface facing away from the chamber 30.

[0049] The infrared emitting coating 212 formed on the first surface of the substrate 211 can generate heat when powered and radiate infrared light, such as far infrared light of 3 μm to 15 μm, which can be used to heat the smokeable material A. When the wavelength of the infrared light matches the absorption wavelength of the volatile components of the smokeable material A, the energy of the infrared light is easily absorbed by the smokeable material A.

[0050] Generally, the mid-infrared emission coating 212 may be a coating made of ceramic materials such as zirconium, Fe-Mn-Cu, tungsten, or transition metals and their oxides.

[0051] In a preferred embodiment, the infrared emitting coating 212 is preferably composed of oxides of at least one metal element such as Mg, Al, Ti, Zr, Mn, Fe, Co, Ni, Cu, Cr, and Zn. These metal oxides can radiate far-infrared rays with heating effect when heated to an appropriate temperature; the coating thickness can preferably be controlled to be 30μm to 50μm; the oxides of the above metal elements can be formed on the surface of the substrate 211 by silk screen printing, plating, etc.

[0052] The conductive coating includes a first conductive coating 213 and a second conductive coating 214 that are spaced apart and are used to feed power provided by, for example, a battery cell disposed within the housing 10 to the infrared emitting coating 212. The first conductive coating 213 and the second conductive coating 214 are both at least partially electrically connected to the infrared emitting coating 212 so that current can flow from one conductive coating to the other conductive coating via the infrared emitting coating 212.

[0053] The first conductive coating 213 includes a second portion of a conductive coating 2131 formed on the first surface of the substrate 211, a first portion of a conductive coating 2132 formed on the second surface of the substrate 211, and a third portion of a conductive coating 2133 arranged on the end face of the upper end of the substrate 211. The second portion of the conductive coating 2131 maintains contact with the infrared emitting coating 212 to form an electrical connection, and the third portion of the conductive coating 2133 maintains contact with the second portion of the conductive coating 2131 and the first portion of the conductive coating 2132 to form an electrical connection. The area of ​​the second portion of the conductive coating 2131 is much smaller than the area of ​​the first portion of the conductive coating 2132. A lead electrically connected to the battery cell can be directly fixed, for example, by welding on the first portion of the conductive coating 2132.

[0054] Similarly, the second conductive coating 214 includes a second conductive coating 2141 formed on the first surface of the substrate 211, a first conductive coating 2142 formed on the second surface of the substrate 211, and a third conductive coating 2143 disposed on the lower end surface of the substrate 211. The second conductive coating 2141 maintains electrical contact with the infrared emitting coating 212, while the third conductive coating 2143 maintains electrical contact with both the second conductive coating 2141 and the first conductive coating 2142. The area of ​​the second conductive coating 2141 is significantly smaller than that of the first conductive coating 2142. Another lead electrically connected to the battery cell can be directly fixed, for example, by soldering, to the first conductive coating 2142. The first conductive coating 2132 and the first conductive coating 2142 almost completely cover the second surface of the substrate 211. The distance d between them can be minimized, for example, 1 to 2 mm, and specifically 1.5 mm.

[0055] The conductive coating is a metal coating, which may include silver, gold, palladium, platinum, copper, nickel, molybdenum, tungsten, niobium, or alloys thereof. Thus, the first portion of the conductive coating 2132 or the first portion of the conductive coating 2142 also functions as a reflective layer, reflecting infrared radiation, thereby effectively reducing outward radiation of infrared radiation and minimizing energy loss.

[0056] The first infrared emitter 21 and the second infrared emitter 22 are configured as sheet-like structures in the figure. That is, their substrates are configured as sheet-like structures, making it relatively easy to form infrared emitting coatings 212 on their surfaces and providing a larger surface for forming infrared emitting coatings 212. The sheet-like substrate can have a length dimension between 10 and 20 mm, specifically 15.5 mm, and a width dimension between 5 and 10 mm, specifically 8.5 mm.

[0057] The first infrared emitter 21 and the second infrared emitter 22 are separated from each other and are arranged on opposite sides of the chamber 30 .

[0058] In a further embodiment, a retaining member 41 and a retaining member 42 are further provided in the housing 10. The retaining member 41 is used to retain one end of the first infrared emitter 21 and one end of the second infrared emitter 22, and the retaining member 42 is used to retain the other end of the first infrared emitter 21 and the other end of the second infrared emitter 22. The manner in which the retaining member 41 or the retaining member 42 retains the first infrared emitter 21 or the second infrared emitter 22 is not limited. For example, in FIG3 , the first infrared emitter 21 or the second infrared emitter 22 is retained by a snap-fit ​​method (the retaining member 41 or the retaining member 42 is provided with a slot).

[0059] In the above embodiment, the chamber 30 enclosed by the retaining member 41, the retaining member 42, the first infrared emitter 21, and the second infrared emitter 22 is square in shape. In a preferred embodiment, the retaining member 41 has a protrusion 411 protruding into the chamber 30, and the retaining member 42 also has a protrusion 421 protruding into the chamber 30. The protrusions 411 and 421 can clamp a cigarette received in the chamber 30.

[0060] It is understood that the shapes of the first infrared emitter 21 and the second infrared emitter 22 are not limited to the above. For example, in one example, the first infrared emitter 21 and the second infrared emitter 22 are configured to have an elliptical cross-section, and the cavity 30 enclosed by the first infrared emitter 21 and the second infrared emitter 22 is adapted to a cylindrical cigarette with a circular cross-section. This is also feasible.

[0061] The first infrared emitter 21 and the second infrared emitter 22 can be independently powered or controlled to independently radiate infrared rays to heat different portions of the smokeable material A. Specifically, in terms of optional control methods, the first infrared emitter 21 and the second infrared emitter 22 can be activated alternately or simultaneously.

[0062] In a further embodiment, a radiation layer 215 is formed on the surface of the infrared emitting coating 212. The radiation layer 215 comprises a glass glaze made of silicon oxide or boron oxide. This radiation layer 215 can improve the emissivity of the infrared emitting coating 212 and protect the infrared emitting coating 212 from wear during the insertion and removal of the cigarette.

[0063] FIG8 is a schematic diagram of another heating mechanism and cigarette provided in an embodiment of the present application.

[0064] Unlike the examples in Figures 2-7 , in the example in Figure 8 , the smoking material A is, for example, a cylindrical cigarette with an elliptical cross-section. It is understood that the smoking material A is not limited to the example in the figure and can also be a cylindrical cigarette with a square cross-section.

[0065] In the example of FIG8 , the shape of the chamber 30 is flat, with a dimension along the first direction Y being smaller than a dimension along the second direction X. This allows the first infrared emitter 21 and the second infrared emitter 22 to have a relatively larger radiation area for the smokeable material A. The first infrared emitter 21 and the second infrared emitter 22 are arranged along the first direction Y, and the first infrared emitter 21 and the second infrared emitter 22 extend at least partially along the second direction X, thereby defining the chamber 30 between the first infrared emitter 21 and the second infrared emitter 22.

[0066] In the example of FIG. 8 , the first infrared emitter 21 and the second infrared emitter 22 may be separated from each other and held by a holding member (not shown in the figure), as in the examples of FIG. 2 to FIG. 7 .

[0067] In other examples, the first infrared emitter 21 and the second infrared emitter 22 may be separated from each other and movable relative to each other.

[0068] Specifically, the first infrared emitter 21 and the second infrared emitter 22 are in a first position (a position before relative movement), in which the smokeable material A is received in the chamber 30 and substantially maintains its own shape, which is usually a cylindrical shape with a circular cross-section based on the preparation of the product and the structure familiar to the user;

[0069] When the first infrared emitter 21 and / or the second infrared emitter 22 are respectively relatively close to the second position along the first direction Y shown in Figure 8 (for example, the position shown in Figure 8), the first infrared emitter 21 and the second infrared emitter 22 respectively surround and squeeze the smokeable material A, thereby deforming it to change the size of the chamber 30 along the first direction Y, and can be roughly squeezed into a cylindrical shape with an elliptical cross-section as shown in Figure 8; at this time, when the first infrared emitter 21 and the second infrared emitter 22 are activated, the distance between the radiated infrared light and the center of the interior of the smokeable material A is greatly reduced, thereby improving the ability and efficiency of the smokeable material A to absorb infrared light, so that the surface and interior of the smokeable material A can be heated relatively evenly.

[0070] FIG9 is a schematic diagram of another heating mechanism and a cigarette provided in an embodiment of the present application.

[0071] 2 to 7 , in the example of FIG9 , the infrared emitter 20 further includes a third infrared emitter 23 disposed around the cavity 30. For other features, reference may be made to the above content.

[0072] It is understandable that the number of infrared emitters is not limited to the situations shown in Figures 2 to 7 or Figure 9, and can be four or more.

[0073] It should be noted that the specification and drawings of this application provide preferred embodiments of the present application, but are not limited to the embodiments described in this specification. Furthermore, it is possible for a person skilled in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. An aerosol generating device, characterized in that include: a chamber for receiving a smokeable material; a first infrared emitter and a second infrared emitter configured to radiate infrared light into the chamber to heat the smokeable material and generate an aerosol; Wherein, the first infrared emitter or the second infrared emitter includes: a substrate having a first surface facing the chamber and a second surface facing away from the chamber; an infrared emitting coating formed on the first surface; The conductive coating comprises a first conductive coating and a second conductive coating arranged at intervals; the first conductive coating or the second conductive coating comprises a first portion of the conductive coating formed on the second surface.

2. The aerosol generating device according to claim 1, wherein The first conductive coating layer or the second conductive coating layer further includes a second portion of the conductive coating layer formed on the first surface, wherein the second portion of the conductive coating layer is in contact with the infrared emitting coating layer to form an electrical connection.

3. The aerosol generating device according to claim 2, wherein: An area of the second portion of the conductive coating is smaller than an area of the first portion of the conductive coating.

4. The aerosol generating device according to claim 2, wherein: The first conductive coating or the second conductive coating further includes a third conductive coating, which is arranged on an end surface of one end of the substrate and keeps contact with the first conductive coating and the second conductive coating.

5. The aerosol generating device according to claim 1, wherein A radiation layer is formed on the surface of the infrared emitting coating.

6. The aerosol generating device according to claim 5, wherein The radiation layer includes a glass glaze made of silicon oxide or boron oxide.

7. The aerosol generating device according to claim 1, wherein The base is made of a material that transmits infrared rays or a metal material with surface insulation treatment.

8. The aerosol generating device according to claim 1, wherein The base body is configured as a sheet-like structure.

9. The aerosol generating device according to claim 1, wherein The first infrared emitter and the second infrared emitter are separated from each other.

10. The aerosol generating device according to claim 9, wherein The chamber has a first direction and a second direction perpendicular to the first direction; The first infrared emitter and the second infrared emitter are arranged along the first direction, and the first infrared emitter and the second infrared emitter extend at least partially along the second direction, thereby defining the cavity between the first infrared emitter and the second infrared emitter, and making the size of the cavity along the second direction larger than the size along the first direction.

11. The aerosol generating device according to claim 9, wherein The chamber has a first direction and a second direction perpendicular to the first direction, and the first infrared emitter and the second infrared emitter are arranged along the first direction; The first infrared emitter is configured to be movable relative to the second infrared emitter along the first direction so as to change the size of the chamber along the first direction.

12. The aerosol generating device according to claim 9, wherein The device further includes a holder configured to hold the first infrared emitter and / or the second infrared emitter.

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