Aerosol generation apparatus

Abstract

The present application relates to the technical field of aerosol generation, and provides an aerosol generation apparatus. The aerosol generation apparatus comprises a support, a first circuit board and a second circuit board; the support is provided with a first side and a second side that are opposite to each other in the thickness direction; the second circuit board is electrically connected to the first circuit board; one of the first circuit board and the second circuit board is arranged on the first side, and the other of the first circuit board and the second circuit board is arranged on the second side. The present application respectively arranges the first circuit board and the second circuit board on the two opposite sides of the support in the thickness direction, and fully uses the space of the support in the thickness direction, thereby increasing the area of the first circuit board and the area of the second circuit board, and being conducive to arrange electronic elements.

Description

An aerosol generating device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202311872347.0 and application date December 29, 2023, and claims the priority of the above-mentioned Chinese patent application. The entire content of the above-mentioned Chinese patent application is hereby introduced into this application as a 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] This section is intended to provide a background or context for the embodiments of the present application. No description herein is admitted to be prior art by virtue of its inclusion in this section.

[0005] An aerosol generating device is used to heat an aerosol-generating substrate to generate an aerosol. In related art, the aerosol generating device includes multiple circuit boards electrically connected by cables. These circuit boards occupy excessive space within the aerosol generating device, resulting in low space utilization and difficulty in reducing the size of the aerosol generating device. This is inconsistent with the trend toward greater portability of aerosol generating devices. Summary of the Invention

[0006] In view of this, embodiments of the present application hope to provide an aerosol generating device that can reduce the volume.

[0007] To achieve the above objectives, the present invention provides an aerosol generating device, comprising:

[0008] a bracket having a first side and a second side opposite to each other in a thickness direction;

[0009] a first circuit board;

[0010] The second circuit board is electrically connected to the first circuit board. One of the first circuit board and the second circuit board is arranged on the first side, and the other one of the first circuit board and the second circuit board is arranged on the second side.

[0011] In some embodiments, the first circuit board is a control board, and the second circuit board is a flexible circuit board.

[0012] In some embodiments, a portion of the flexible circuit board that bypasses a side surface of the bracket along the width direction and extends to the first side is a connecting portion, and the connecting portion is connected to the control board.

[0013] In some embodiments, the aerosol generating device includes an indicator element and / or an operating element, and the indicator element and / or the operating element are arranged on a portion of the connecting portion located on a side of the bracket along the width direction.

[0014] In some embodiments, the aerosol generating device includes an adapter plate and an electrical interface, the adapter plate is electrically connected to the flexible printed circuit board, and the electrical interface is provided on the adapter plate.

[0015] In some embodiments, the control board is disposed at the top of the bracket along the length direction, the adapter board is disposed at the bottom of the bracket along the length direction, and the flexible circuit board extends from where the control board is located to where the adapter board is located.

[0016] In some embodiments, the aerosol generating device includes a vibration element, which is disposed at the bottom of the bracket and located on the adapter plate.

[0017] In some embodiments, the aerosol generating device includes a battery, and one of the first circuit board and the second circuit board and the battery are arranged along the length direction of the bracket.

[0018] In some embodiments, the bracket is formed with a placement groove on the first side, which is open toward one side in the thickness direction, and the battery is placed in the placement groove.

[0019] In some embodiments, in the width direction, the distance between the side edge of the battery and the corresponding outer side edge of the bracket is 0.6 mm to 1 mm.

[0020] In some embodiments, at least a portion of the second circuit board is attached to a surface of the first side or a surface of the second side of the bracket.

[0021] In some embodiments, a groove is formed on one side surface of the bracket along the thickness direction, and at least a portion of the second circuit board is located in the groove.

[0022] In some embodiments, the second circuit board includes a first part and a second part, the groove includes a first area and a second area, the depth of the first area is greater than the depth of the second area, the first part is located in the first area, the second part is located in the second area, and the first part is used to set electronic components.

[0023] In some embodiments, taking a plane perpendicular to the thickness direction of the bracket as a projection plane, the projection of the first part is located within the projection range of the first circuit board.

[0024] In some embodiments, the aerosol generating device includes a heating component electrically connected to the first circuit board, and the heating component and the first circuit board are both arranged at the same end of the bracket along the length direction.

[0025] In some embodiments, a notch is formed on one side of the bracket along the width direction, and at least a portion of the heating component is accommodated in the notch. A portion of the first circuit board and the heating component are arranged side by side along the width direction of the bracket, and another portion of the first circuit board extends to the bottom of the heating component.

[0026] In the aerosol generating device provided in the embodiment of the present application, the first circuit board and the second circuit board are respectively arranged on two opposite sides of the bracket along the thickness direction. On the one hand, to a certain extent, it avoids the situation where the first circuit board and the second circuit board are arranged in the width direction of the bracket, which leads to an excessive increase in the size of the aerosol generating device in the width direction, making it inconvenient for the user to hold it; on the other hand, it avoids the situation where the first circuit board and the second circuit board are arranged in the length direction of the bracket, which leads to the overall length of the aerosol generating device being too long, or the area of ​​the first circuit board and the second circuit board being too small, making it difficult to layout electronic components; the present application fully utilizes the space of the bracket along the thickness direction by arranging the first circuit board and the second circuit board respectively on two opposite sides of the bracket along the thickness direction. Under the same layout space, the area of ​​the first circuit board and the second circuit board is increased, which facilitates the arrangement of electronic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic structural diagram of an aerosol generating device in one embodiment of the present application;

[0028] FIG2 is a schematic diagram of a portion of the aerosol generating device and an aerosol generating article shown in FIG1 ;

[0029] FIG3 is a schematic structural diagram of the structure shown in FIG2 from another perspective;

[0030] FIG4 is a schematic structural diagram of a bracket in one embodiment of the present application;

[0031] FIG5 is a schematic structural diagram of the bracket shown in FIG4 from another perspective;

[0032] FIG6 is a schematic diagram of the structure shown in FIG2 from another perspective. DETAILED DESCRIPTION

[0033] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of this application and should not be regarded as an improper restriction on this application.

[0034] In this application, a plurality includes two and more than two. The unit "mm" is millimeter.

[0035] Referring to Figures 1 to 3 , an embodiment of the present application provides an aerosol generating device 2000 . The aerosol generating device 2000 includes a bracket 1 , a first circuit board 2 , and a second circuit board 3 . The bracket 1 has a first side 1 d and a second side 1 f , which are opposite to each other along the thickness direction. The second circuit board 3 is electrically connected to the first circuit board 2 .

[0036] Both the first circuit board 2 and the second circuit board 3 can be used to implement electrical functions.

[0037] One of the first circuit board 2 and the second circuit board 3 is disposed on the first side 1d, and the other of the first circuit board 2 and the second circuit board 3 is disposed on the second side 1f. For example, in one embodiment, the first circuit board 2 is disposed on the first side 1d, and the second circuit board 3 is disposed on the second side 1f. In another embodiment, the second circuit board 3 is disposed on the first side 1d, and the first circuit board 2 is disposed on the second side 1f.

[0038] Exemplarily, the aerosol generating device 2000 is a portable aerosol generating device. For example, the aerosol generating device 2000 can be a handheld aerosol generating device. The aerosol generating device 2000 can have a generally long, rectangular shape, making it easier for a user to hold the aerosol generating device 2000.

[0039] In the aerosol generating device 2000 provided in the embodiment of the present application, the first circuit board 2 and the second circuit board 3 are respectively arranged on two opposite sides of the bracket 1 along the thickness direction. On the one hand, to a certain extent, it avoids the situation where the first circuit board 2 and the second circuit board 3 are arranged along the width direction of the bracket 1, which leads to an excessive increase in the size of the aerosol generating device 2000 along the width direction, making it inconvenient for the user to hold it; on the other hand, it avoids the situation where the first circuit board 2 and the second circuit board 3 are arranged along the length direction of the bracket 1, which leads to the overall length of the aerosol generating device 2000 being too long, or the area of ​​the first circuit board 2 and the second circuit board 3 being too small, making it difficult to layout electronic components; the present application fully utilizes the space of the bracket 1 along the thickness direction by arranging the first circuit board 2 and the second circuit board 3 respectively on two opposite sides of the bracket 1 along the thickness direction, increases the area of ​​the first circuit board 2 and the second circuit board 3, and facilitates the arrangement of electronic components.

[0040] For example, in some embodiments, referring to Figures 1 to 3 , the aerosol generating device 2000 includes a housing 10, a bracket 1, a first circuit board 2, and a second circuit board 3 are all located within the housing 10, and a nozzle is formed at one end of the housing 10 along its length. The housing 10 is the exterior component of the aerosol generating device 2000 and provides protection for the bracket 1, the first circuit board 2, and the second circuit board 3. The nozzle is used by the user to inhale the aerosol. The contour shape of the housing 10 determines the contour shape of the aerosol generating device 2000. When the user is using the aerosol generating device 2000, the user holds the housing 10 in their hand and holds the nozzle in their mouth, with the first side 1d facing the user and the second side 1f away from the user. The width direction is consistent with the left-right direction of the user.

[0041] It should be noted that the thickness direction of the bracket 1 is consistent with the thickness direction of the housing 10, the first side 1d of the bracket 1 is consistent with the first side of the housing 10, and the second side 1f of the bracket 1 is consistent with the second side of the housing 10. The length direction of the bracket 1 is consistent with the length direction of the housing 10, and the width direction of the bracket 1 is consistent with the width direction of the housing 10.

[0042] In one embodiment, referring to Figures 2 and 3 , the first circuit board 2 is a control board 100, and the second circuit board 3 is a flexible circuit board 200. This fully utilizes the space in the thickness direction, allowing the flexible circuit board 200 to increase the area for placing electronic components, thus resolving the problem of insufficient area on the control board 100.

[0043] The control panel 100 is used to control the start and stop of the aerosol generating device 2000, heating, detection of aerosol generating substrate, etc. In other words, the control panel 100 can be used to control the entire operation of the aerosol generating device 2000 and realize automatic control of the aerosol generating device 2000.

[0044] The flexible printed circuit board (FPCB) 200 is flexible and can be bent, folded, extended, and moved in three dimensions. This highly flexible FPCB integrates the assembly and wiring of electronic components. The FPCB is electrically connected to the control board 100, reducing the number of cables required for electrical connections, improving space utilization, and further reducing the size of the aerosol generating device 2000.

[0045] The control board 100 may be a hard PCB (Printed Circuit Board). Compared to an FPC, a hard PCB is harder than an FPC and generally cannot be bent or folded freely.

[0046] Exemplarily, the thickness of the control board 100 is 0.6 mm-1.0 mm, for example, the thickness of the control board 100 is 0.6 mm, 0.8 mm or 1.0 mm, etc. The control board 100 has good support force to support electronic components without deformation, and the thickness is not too large.

[0047] Exemplarily, the thickness of the flexible circuit board 200 is less than 0.6 mm, for example, 0.15 mm. The flexible circuit board 200 is thinner than the control board 100 and can be approximately 0.5 mm to 0.8 mm thinner than an electrical connection using a cable (with a diameter of 0.5 mm to 1.0 mm). This helps reduce the thickness of the entire device while still meeting its functional requirements.

[0048] In some embodiments, the control board 100 can be a double-sided board, that is, both end surfaces of the control board 100 along the thickness direction can be used to set electronic components. In this way, with the plane perpendicular to the thickness direction as the projection surface, more electronic components can be set under the condition that the control board 100 has the same projection area.

[0049] Electronic components are basic elements in electronic circuits, usually in independent packages, and have two or more leads or metal contacts. Electronic components are arranged on the first circuit board 2 and / or the second circuit board 3 to form electronic circuits with specific functions.

[0050] In some embodiments, both the first circuit board 2 and the second circuit board 3 may be rigid PCBs. For example, the first circuit board 2 may be the control board 100, and the second circuit board 3 may be a secondary control board. The secondary control board serves as an auxiliary control board, providing auxiliary control functions for the control board 100.

[0051] In one embodiment, referring to Figures 2 to 4 , the portion of the flexible printed circuit board 200 that extends around a side surface along the width of the bracket 1 to the first side 1d serves as a connection portion 230, which is connected to the control board 100. Specifically, the connection portion 230 is folded over the side surface along the width of the bracket 1 and electrically connected to the control board 100. Leveraging the flexibility of the flexible printed circuit board 200, this portion of the flexible printed circuit board 200 is routed around the side surface along the width of the bracket 1. This allows for electrical connection between the flexible printed circuit board 200 and the control board 100 without requiring cables.

[0052] In one embodiment, the flexible printed circuit board 200 can be plugged into or welded to the control board 100 to achieve electrical connection.

[0053] In one embodiment, referring to Figures 1 to 3 , the aerosol generating device 2000 includes an indicator element 4 and / or an operating element 11. The indicator element 4 and / or the operating element 11 are disposed on a portion of the connecting portion 230 located on a side of the bracket 1 along the width direction. In other words, the indicator element 4 is located on one side of the bracket 1 along the width direction and is electrically connected to the flexible circuit board 200. Assembling the indicator element 4 using the flexible circuit board 200 can save on circuit boards used to mount the indicator element 4, reduce the number of cables and electrical connectors required for the circuit board, and avoid increased assembly difficulty. Positioning the indicator element 4 on one side of the bracket 1 along the width direction not only avoids increasing the thickness of the aerosol generating device 2000 but also facilitates visual inspection of the indicator element 4 by the user while using the aerosol generating device 2000, thus meeting ergonomic visual requirements.

[0054] The types of the indicator element 4 include, but are not limited to, indicator lights, for example, a Lighting Emitting Diode (LED).

[0055] The operating element 11 may be a button, such as a physical button or a touch button. The operating element 11 may be used to start or stop the aerosol generating device 2000 or to implement other functions.

[0056] In one embodiment, referring to Figures 1 to 3 , an aerosol generating device 2000 includes an adapter plate 5 and an electrical interface 6 . The adapter plate 5 is electrically connected to the flexible printed circuit board 200 , and the electrical interface 6 is disposed on the adapter plate 5 . Specifically, the electrical interface 6 is electrically connected to the adapter plate 5 . The electrical interface 6 can be used to electrically connect to external electrical devices. The electrical interface 6 can be used to supply power and / or transmit information. In this way, the flexible printed circuit board 200 can be used to achieve an electrical connection between the control board 100 and the adapter plate 5 , eliminating the need for cables between the control board 100 and the adapter plate 5 and reducing assembly difficulty.

[0057] For example, the adapter board 5 may also be a hard PCB board. In this way, the adapter board 5 can provide support for the electrical interface 6 to ensure a stable and reliable electrical connection.

[0058] For example, in one embodiment, the electrical interface 6 can be used for power supply. The electrical interface 6 can be used to charge the battery 8 of the aerosol generating device 2000 and / or to power the control board 100. The type of the electrical interface 6 is not limited. For example, the electrical interface 6 includes but is not limited to a USB (Universal Serial Bus) interface, a Micro USB interface, a Type-C interface, a Lightning interface, and the like.

[0059] In one embodiment, referring to Figures 2 and 3 , the control board 100 is positioned at the top of the bracket 1 along its length, the adapter board 5 is positioned at the bottom of the bracket 1 along its length, and the flexible printed circuit board 200 extends from the control board 100 to the adapter board 5. Specifically, the electrical interface 6 is located at the bottom of the bracket 1 along its length. The control board 100 and adapter board 5 are positioned at the top and bottom ends of the bracket 1 along its length, respectively, improving space utilization and reducing the overall thickness of the device.

[0060] In one embodiment, referring to Figures 2 and 3 , an aerosol generating device 2000 includes a vibration element 7 , which is disposed at the bottom of a bracket 1 and positioned on an adapter plate 5 . Specifically, the vibration element 7 is electrically connected to the adapter plate 5 . The vibration element 7 is electrically connected to the control board 100 via the flexible printed circuit board 200 and the adapter plate 5 , allowing the control board 100 to control the vibration element 7 .

[0061] The vibration element 7 is used to provide vibration feedback. For example, the vibration feedback of the vibration element 7 can prompt the user, for example, the vibration element 7 vibrates to indicate the start or stop of the aerosol generating device 2000.

[0062] The vibration element 7 includes but is not limited to a vibration motor.

[0063] In one embodiment, referring to Figures 2 and 3 , the aerosol generating device 2000 includes a battery 8. One of the first circuit board 2 and the second circuit board 3 and the battery 8 are arranged along the length of the bracket 1. The arrangement of the first circuit board 2, the second circuit board 3 and the battery 8 along the length of the bracket 1 allows the battery 8 to have a larger area and maximize its capacity.

[0064] In one embodiment, referring to Figures 2 and 3 , the battery 8 and control board 100 are disposed on the same side of the bracket 1 along the thickness direction, and the control board 100 and battery 8 are arranged along the length of the bracket 1. On the one hand, the battery 8 is typically thicker than the control board 100. Since both the battery 8 and the control board 100 are disposed on the same side of the bracket 1 along the thickness direction, the combined thickness of the electronic components on the control board 100 and the control board 100 is roughly equivalent to the thickness of the battery 8. This rational layout fully utilizes the limited space within the housing 10, achieving a lightweight and thin product. Furthermore, the battery 8 and control board 100 are relatively close, facilitating electrical connection between the two to power the entire device. On the other hand, the arrangement of the control board 100 and battery 8 along the length of the bracket 1 ensures that both the control board 100 and battery 8 have a larger area, maximizing the capacity of the battery 8.

[0065] In one embodiment, referring to Figure 6 , the distance H between the side edge of the battery 8 and the corresponding outer edge of the bracket 1 in the width direction is 0.6mm to 1mm. That is, with the plane perpendicular to the thickness direction as the projection plane, the distance H between the side edge of the battery 8 and the outer edge of the bracket 1 is 0.6mm to 1mm. In other words, the difference between the width dimension of the bracket 1 and the width dimension of the battery 8 is 1.2mm to 2mm. In this way, the size of the battery 8 is as large as possible, provided that the bracket 1 can wrap around the side edge of the battery 8 in the width direction, thereby increasing the capacity of the battery 8.

[0066] In one embodiment, referring to Figures 2 to 4 , the bracket 1 has a placement slot 1a formed on a first side 1d, opening toward one side in the thickness direction. The battery 8 is placed within the placement slot 1a. For example, the battery 8 can be placed within the placement slot 1a through the opening toward the thickness direction. This allows the battery 8 to be as flush as possible with the control board 100 along the thickness direction, meeting the requirements for a thin and lightweight design.

[0067] 3 to 5 , at least a portion of the second circuit board 3 is attached to the surface of the first side 1d or the surface of the second side 1f of the bracket 1. The bracket 1 provides support for the second circuit board 3 to prevent the second circuit board 3 from being deformed by stress.

[0068] Second circuit board 3 may be a flexible circuit board 200. In one embodiment, as shown in Figures 3 to 5 , at least a portion of flexible circuit board 200 is attached to a surface of first side 1d or a surface of second side 1f of bracket 1. Bracket 1 provides support for flexible circuit board 200, preventing deformation of flexible circuit board 200 due to stress.

[0069] In one embodiment, referring to Figures 3 to 5 , a recess 1b is formed along one side surface of the bracket 1 in the thickness direction, and at least a portion of the second circuit board 3 is positioned within the recess 1b. The recess 1b minimizes the extent to which the second circuit board 3 protrudes from the first or second side surface of the bracket 1, further reducing the thickness of the aerosol generating device 2000.

[0070] In one embodiment, referring to Figures 3 to 5 , a recess 1b is formed along one side surface of the bracket 1 in the thickness direction, and at least a portion of the flexible printed circuit board 200 is positioned within the recess 1b. For example, the flexible printed circuit board 200 is embedded within the recess 1b and adheres to the wall surface of the recess 1b. The recess 1b minimizes the extent to which the flexible printed circuit board 200 protrudes from the first or second side surface of the bracket 1, further reducing the thickness of the aerosol generating device 2000.

[0071] In one embodiment, referring to Figures 3 to 5 , the second circuit board 3 includes a first portion 210 and a second portion 220. The recess 1b includes a first region 1ba and a second region 1bb. The first region 1ba is deeper than the second region 1bb. The first portion 210 is located within the first region 1ba, and the second portion 220 is located within the second region 1bb. The first portion 210 is used to accommodate electronic components. This placement of electronic components in the first portion 210 allows for assembly of these components, effectively increasing the area available for electronic component placement and reducing the pressure on the first circuit board 2 to accommodate these components. The relatively deep first region 1ba prevents the electronic components located in the first portion 210 from increasing the thickness of the aerosol generating device 2000, thereby balancing the requirements for electronic component placement with the need for a thin and lightweight design.

[0072] In one embodiment, referring to Figures 3 to 5 , the flexible circuit board 200 includes a first portion 210 and a second portion 220. The recess 1b includes a first region 1ba and a second region 1bb. The first region 1ba is deeper than the second region 1bb. The first portion 210 is located within the first region 1ba, and the second portion 220 is located within the second region 1bb. The first portion 210 is used to accommodate electronic components. This placement of electronic components enables the flexible circuit board 200 to assemble electronic components, effectively increasing the area available for electronic component placement and reducing the pressure on the control board 100 to arrange electronic components. The relatively deep first region 1ba prevents the electronic components located in the first portion 210 from increasing the thickness of the aerosol generating device 2000, thus balancing the requirements for electronic component placement with the need for a thin and lightweight design.

[0073] In one embodiment, referring to Figures 2 and 3 , the projection of the first portion 210 is located within the projection of the first circuit board 2, using a plane perpendicular to the thickness of the bracket 1 as the projection plane. This allows the projection of the first portion 210 to be offset from the projection of the battery 8, thereby avoiding increasing the thickness of the area where the battery 8 is located. This allows the thickness of each area to be as consistent as possible, effectively utilizing the space within the housing 10.

[0074] In one embodiment, referring to Figures 2 and 3 , the projection of the first portion 210 is located within the projection of the control board 100, using a plane perpendicular to the thickness of the bracket 1 as the projection plane. This allows the projection of the first portion 210 to be offset from the projection of the battery 8, thereby avoiding increasing the thickness of the area where the battery 8 is located. This allows the thickness of each area to be as consistent as possible, thus achieving optimal utilization of the space within the housing 10.

[0075] In one embodiment, referring to FIG3 , the adapter plate 5 and the flexible printed circuit board 200 are located on the same side of the bracket 1 along the thickness direction, thereby facilitating electrical connection between the flexible printed circuit board 200 and the adapter plate 5 .

[0076] For example, in some embodiments, the flexible printed circuit board 200 and the adapter board 5 can be electrically connected by welding or plugging.

[0077] In one embodiment, referring to Figures 2 to 5 , the aerosol generating device 2000 includes a heating assembly 9 electrically connected to a first circuit board 2. The heating assembly 9 and the first circuit board 2 are disposed at the same end of the bracket 1 along its length. Exemplarily, the heating assembly 9 and the control board 100 are disposed at the same end of the bracket 1 along its length. The proximity between the heating assembly 9 and the first circuit board 2 facilitates electrical connection, conserves wiring, and prevents the heating assembly 9 from occupying space on the battery 8, allowing the battery 8 to be as large as possible to meet battery life requirements.

[0078] In one embodiment, referring to Figures 2 to 5 , a notch 1c is formed on one side of the bracket 1 along its width, and at least a portion of the heating assembly 9 is accommodated within the notch 1c. A portion of the first circuit board 2 is arranged side by side with the heating assembly 9 along the width of the bracket 1, with another portion of the first circuit board 2 extending below the heating assembly 9. On the one hand, positioning the heating assembly 9 within the notch 1c prevents the bracket 1 from obstructing the heating assembly 9, thereby making the heating assembly 9 sufficiently large. On the other hand, the projection of the control board 100, measured along a plane perpendicular to the thickness of the bracket 1, forms a roughly L-shaped projection, fully utilizing the space within the housing 10. Without increasing the width, the control board 100 remains sufficiently large for arranging electronic components.

[0079] In one embodiment, referring to Figures 2 and 3 , the heating assembly 9 includes a heating tube 91, which is used to accommodate and heat the aerosol-generating substrate of the aerosol-generating article 1000. The cross-section of the heating tube 91, taken perpendicular to its length, is an elliptical or oval shape extending along its width. This prevents the heating tube 91 from increasing the thickness of the aerosol-generating device 2000.

[0080] A waisted circle is a closed figure formed by dividing a circle into two semicircular arcs through the center of the circle and translating them in opposite directions, and connecting the endpoints of the two semicircular arcs with two parallel lines of equal length.

[0081] The heating methods of the heating component 9 include but are not limited to resistance heating, electromagnetic heating, infrared heating, microwave heating or laser heating. The heating tube 91 can heat the aerosol generating matrix in one or more of the three forms of heat conduction, heat convection and heat radiation. The heat transfer in the form of heat convection means that the heating tube 91 is not in contact with the aerosol generating matrix. The heating tube 91 first heats the air, and then the hot air bakes and heats the aerosol generating matrix. Heat conduction means that the heating tube 91 is in contact with the aerosol generating matrix and transfers heat to the aerosol generating matrix. Exemplarily, resistance and electromagnetic heating mainly transfer heat to the aerosol generating matrix in the form of heat conduction or heat convection. Infrared heating, microwave heating or laser heating mainly transfer heat to the aerosol generating matrix in the form of heat radiation.

[0082] Taking electromagnetic heating as an example, the heating assembly 9 further includes a coil, which is sheathed around the outer periphery of the heating tube 91. The coil and the heating tube 91 can be electromagnetic heating elements. In other words, the coil can be an electromagnetic coil, and the heating tube 91 generates eddy currents in the magnetic field of the coil to generate self-heating.

[0083] Aerosol-generating article 1000 is intended for use with aerosol-generating device 2000 (see Figures 2 and 3). Aerosol-generating article 1000 includes an aerosol-generating substrate. The aerosol-generating substrate is configured to be heated to generate an aerosol. Exemplarily, the aerosol-generating substrate can be adapted to generate aerosols using a heat-not-burn method. That is, the aerosol-generating substrate is heated to a temperature below its ignition point to generate the aerosol. The aerosol-generating substrate does not burn during the aerosol generation process. The aerosol-generating substrate may comprise a tobacco material.

[0084] The aerosol generating device 2000 is used for a user to inhale an aerosol generated by an aerosol generating substrate. When the user inhales the aerosol, the aerosol flows toward the mouthpiece (see Figures 1 and 2).

[0085] The aerosol-forming substrate may be in a solid state.

[0086] For example, in some embodiments, the aerosol-generating article 1000 includes a functional segment and a wrapping layer. The functional segment is disposed on one side of the aerosol-generating substrate along its length, and the wrapping layer wraps around the periphery of the aerosol-generating substrate and the periphery of the functional segment. The wrapping layer can protect both the aerosol-generating substrate and the functional segment.

[0087] The functional segment can provide at least one of the functions of aerosol gathering, dilution, cooling, interception and compensation.

[0088] In some embodiments, the cross-section of the aerosol-generating article 1000, taken along a plane perpendicular to the longitudinal direction, is an elliptical or oval shape extending along the width direction. Thus, the cross-sectional shape of the aerosol-generating article 1000 matches the cross-sectional shape of the heating tube 91 (see Figures 2 and 3).

[0089] In the description of this application, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in further embodiments", or "exemplary" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in this application and features of different embodiments or examples, unless they are mutually inconsistent.

[0090] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application are intended to be within the scope of protection of the present application.

Claims

1. An aerosol generating device, comprising: a holder having a first side and a second side opposite to each other in the thickness direction; a first circuit board; a second circuit board electrically connected to the first circuit board, one of the first circuit board and the second circuit board is disposed on the first side, and the other of the first circuit board and the second circuit board is disposed on the second side.

2. The aerosol generating device according to claim 1, wherein, The first circuit board is a control board, and the second circuit board is a flexible circuit board.

3. The aerosol generating device according to claim 2, wherein, A portion of the flexible circuit board that extends around one side surface of the holder in the width direction to the first side is a connection portion, and the connection portion is connected to the control board.

4. The aerosol generating device according to claim 3, wherein, The aerosol generating device includes an indicating element and / or an operating element, and the indicating element and / or the operating element are disposed on a portion of the connection portion located on the side surface of the holder in the width direction.

5. The aerosol generating device according to claim 2, wherein, The aerosol generating device includes an adapter board and an electrical interface, the adapter board is electrically connected to the flexible circuit board, and the electrical interface is disposed on the adapter board.

6. The aerosol generating device according to claim 5, wherein, The control board is disposed at the top of the holder in the length direction, the adapter board is disposed at the bottom of the holder in the length direction, and the flexible circuit board extends from the location where the control board is located to the location where the adapter board is located.

7. The aerosol generating device according to claim 5, wherein, The aerosol generating device includes a vibration element, and the vibration element is disposed at the bottom of the holder and on the adapter board.

8. The aerosol generating device according to any one of claims 1 to 7, wherein, The aerosol generating device includes a battery, and one of the first circuit board and the second circuit board and the battery are arranged along the length direction of the holder.

9. The aerosol generating device according to claim 8, wherein, The holder forms a placement groove on the first side that opens towards one side in the thickness direction, and the battery is placed in the placement groove.

10. The aerosol generating device according to claim 8, wherein, In the width direction, the distance between the side edge of the battery and the corresponding outer side edge of the holder is 0.6 mm to 1 mm.

11. The aerosol generating device according to any one of claims 1 to 7, wherein, At least a part of the second circuit board is attached to the surface of the first side or the second side of the holder.

12. The aerosol generating device according to any one of claims 1 to 7, wherein, A groove is formed on one side surface of the holder in the thickness direction, and at least a part of the second circuit board is located in the groove.

13. The aerosol generating device according to claim 12, wherein, The second circuit board includes a first part and a second part, the groove includes a first region and a second region, the depth of the first region is greater than the depth of the second region, the first part is located in the first region, the second part is located in the second region, and the first part is used for arranging electronic components.

14. The aerosol generating device according to claim 13, wherein, Taking a plane perpendicular to the thickness direction of the holder as a projection plane, the projection of the first part is located within the projection range of the first circuit board.

15. The aerosol generating device according to any one of claims 1 to 7, wherein, The aerosol generating device includes a heating assembly electrically connected to the first circuit board, and both the heating assembly and the first circuit board are disposed at the same end of the holder in the length direction.

16. The aerosol generating device according to claim 15, wherein, A notch is formed on one side of the holder in the width direction, at least a part of the heating assembly is received in the notch, a part of the first circuit board is arranged side by side with the heating assembly along the width direction of the holder, and another part of the first circuit board extends below the heating assembly.

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