Aerosol-generating device

Abstract

The application discloses an aerosol generating device, comprising: a microwave heating body for heating an aerosol generating substrate; a circuit board comprising a first sub-circuit board and a second sub-circuit board, the first sub-circuit board and the second sub-circuit board being electrically connected, the first sub-circuit board being provided with a radio frequency component, the radio frequency component being coupled to the microwave heating body; a frame body arranged between the first sub-circuit board and the second sub-circuit board, the frame body and the first sub-circuit board and the second sub-circuit board enclosing an electromagnetic shielding space accommodating the radio frequency component. Compared with the case of shielding the radio frequency radiation generated by the aerosol generating device during operation by specially arranging an electromagnetic shielding cover, the aerosol generating device does not need to specially arrange an electromagnetic shielding cover, which is conducive to reducing the volume of the aerosol generating device, thereby facilitating the miniaturization of the product.

Description

Technical Field

[0001] This application relates to the field of electronic atomization technology, and in particular to an aerosol generating device. Background Technology

[0002] For aerosol generating devices used to provide inhalable aerosols, related technologies have proposed a technique of heating the aerosol generating matrix using microwave heating. Specifically, radio frequency (RF) microwaves are emitted from an RF source and act on the target area of ​​the aerosol generating matrix to form a primary coupling, allowing the area to fully absorb microwave energy and rapidly heat up, thereby achieving atomization. Compared to traditional heating methods such as resistance contact heating, infrared radiation heating, and electromagnetic induction heating, microwave heating has significant advantages in terms of heating speed and heating uniformity.

[0003] However, without shielding for the radio frequency radiation generated during the operation of an aerosol generator, it may interfere with nearby radio frequency equipment operating on the same frequency band. Furthermore, leaked radio frequency radiation due to lack of shielding may harm the health of users of the aerosol generator and those in the vicinity. Therefore, traditional aerosol generators typically incorporate electromagnetic shielding to protect against the radio frequency radiation generated during operation. However, this dedicated electromagnetic shielding increases the size of the aerosol generator, hindering miniaturization. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an aerosol generator that eliminates the need for a dedicated electromagnetic shielding cover, thereby reducing the size of the aerosol generator and facilitating product miniaturization.

[0005] An aerosol generating apparatus according to an embodiment of this application includes:

[0006] A microwave heating element for heating an aerosol generation matrix;

[0007] The circuit board includes a first sub-circuit board and a second sub-circuit board, which are electrically connected. A radio frequency (RF) component is disposed on the first sub-circuit board and coupled to the microwave heating element.

[0008] A frame is disposed between the first sub-circuit board and the second sub-circuit board, and the frame, together with the first sub-circuit board and the second sub-circuit board, forms an electromagnetic shielding space to accommodate the radio frequency component.

[0009] The aerosol generator according to the embodiments of this application has at least the following beneficial effects: the circuit board adopts a split structure, including a first sub-circuit board and a second sub-circuit board, with a frame disposed between the first and second sub-circuit boards, so that the first and second sub-circuit boards and the frame enclose an electromagnetic shielding space. The radio frequency (RF) components disposed on the first sub-circuit board are housed within the electromagnetic shielding space, thereby shielding the RF radiation generated by the RF components during operation. This not only helps prevent the aerosol generator from affecting nearby RF devices operating in the same frequency band during operation, but also helps prevent the aerosol generator from harming the health of users and surrounding personnel during operation. Compared to the case where a dedicated electromagnetic shielding cover is used to shield the RF radiation generated by the aerosol generator during operation, the aerosol generator of the embodiments of this application does not require a dedicated electromagnetic shielding cover, which helps reduce the size of the aerosol generator and thus facilitates product miniaturization.

[0010] According to some embodiments of this application, the aerosol generating device further includes a power supply cell electrically connected to the first sub-circuit board and the second sub-circuit board, the power supply cell being located outside the electromagnetic shielding space.

[0011] According to some embodiments of this application, the frame has a first opening and a second opening disposed opposite to each other, the first sub-circuit board covers the first opening, and the second sub-circuit board covers the second opening, so as to enclose and form the electromagnetic shielding space.

[0012] According to some embodiments of this application, the frame is made of metal material, or the surface of the frame is coated with a metal shielding layer.

[0013] According to some embodiments of this application, the side wall of the frame is provided with an air inlet and an air outlet communicating with the electromagnetic shielding space, and the radio frequency component is located between the air inlet and the air outlet within the electromagnetic shielding space.

[0014] According to some embodiments of this application, a power control component is provided on the second sub-circuit board, the power control component is located within the electromagnetic shielding space, and the power control component is located between the air inlet and the air outlet.

[0015] According to some embodiments of this application, the radio frequency component is closer to the air outlet than the air inlet, and the power control component is closer to the air inlet than the radio frequency component.

[0016] According to some embodiments of this application, the air inlet and the air outlet are spaced apart along a first direction, and a plurality of guide plates are provided in the frame, the plurality of guide plates are spaced apart along the first direction, and two adjacent guide plates are staggered along directions intersecting the first direction.

[0017] According to some embodiments of this application, the aerosol generating device further includes an airflow generating device, which is disposed at the air inlet or the air outlet, and is used to actively generate airflow from the air inlet to the air outlet.

[0018] According to some embodiments of this application, the airflow generating device is a fan or a miniature air pump.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the structure of an aerosol generating device according to an embodiment of this application;

[0022] Figure 2 yes Figure 1 A cross-sectional view of the structure shown;

[0023] Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle;

[0024] Figure 4 This is a schematic diagram of the structure of a first sub-circuit board, a second sub-circuit board, and a frame according to an embodiment of this application;

[0025] Figure 5 yes Figure 4 Enlarged view of a portion of point B in the middle;

[0026] Figure 6 yes Figure 4 An exploded view of the structure shown;

[0027] Figure 7 yes Figure 4 A schematic diagram of the structure from another perspective.

[0028] Figure label:

[0029] Electromagnetic shielding space a;

[0030] Microwave heating element 100;

[0031] First sub-circuit board 210, radio frequency component 211, second sub-circuit board 220;

[0032] Frame 300, first opening 310, second opening 320, air inlet 330, deflector 340;

[0033] Airflow generating device 400. Detailed Implementation

[0034] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0035] In the description of this application, it should be understood that if directional descriptions are involved, such as up, down, front, back, left, right, etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] In the description of this application, if words such as several, greater than, less than, exceeding, above, below, or within appear, "several" means one or more, "more than" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the number itself, and "above," "below," "within," etc. are understood to include the number itself.

[0037] In the description of this application, the use of terms such as "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0038] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0039] Reference Figures 1 to 7 An aerosol generating apparatus according to an embodiment of this application includes a microwave heating element 100, a circuit board, and a frame 300.

[0040] Specifically, the microwave heating element 100 is used to heat the aerosol generation matrix. The circuit board includes a first sub-circuit board 210 and a second sub-circuit board 220, which are electrically connected. A radio frequency component 211 is disposed on the first sub-circuit board 210 and coupled to the microwave heating element 100. A frame 300 is disposed between the first sub-circuit board 210 and the second sub-circuit board 220. The frame 300, the first sub-circuit board 210, and the second sub-circuit board 220 enclose an electromagnetic shielding space a for accommodating the radio frequency component 211.

[0041] The circuit board adopts a split structure, including a first sub-circuit board 210 and a second sub-circuit board 220. A frame 300 is provided between the first sub-circuit board 210 and the second sub-circuit board 220, so that the first sub-circuit board 210 and the second sub-circuit board 220 and the frame 300 enclose an electromagnetic shielding space a. The radio frequency component 211, disposed on the first sub-circuit board 210, is housed within the electromagnetic shielding space a, thereby shielding the radio frequency radiation generated by the radio frequency component 211 during operation. This not only helps prevent the aerosol generator from affecting nearby radio frequency equipment operating in the same frequency band during operation, but also helps prevent the aerosol generator from harming the health of users and surrounding personnel during operation. Compared to the need for a dedicated electromagnetic shielding cover to shield the radio frequency radiation generated by the aerosol generator during operation, the aerosol generator of this embodiment does not require a dedicated electromagnetic shielding cover, which helps reduce the size of the aerosol generator and thus facilitates product miniaturization.

[0042] It should be noted that the power module of the aerosol generator includes a battery and a power control component integrated on a circuit board. The power control component is a component on the circuit board with relatively large heat loss.

[0043] It should be noted that the radio frequency component 211 can be a non-integrated structure, including at least a radio frequency transceiver chip and a radio frequency power chip. Among them, the heat loss of the radio frequency power chip is more prominent. Of course, the radio frequency component 211 can also be an integrated structure, specifically an integrated chip that integrates radio frequency transceiver and power amplifier circuits.

[0044] In some embodiments, the aerosol generating device further includes a power supply cell (not shown) electrically connected to the first sub-circuit board 210 and the second sub-circuit board 220. The power supply cell is located outside the electromagnetic shielding space a. On the one hand, this helps to reduce the impact of the heat generated by the radio frequency component 211 during operation on the power supply cell. On the other hand, it helps to reduce the impact of the magnetic field generated by the radio frequency component 211 during operation on the power supply cell, thereby improving the safety of the power supply cell and extending its service life.

[0045] Reference Figures 4 to 7 In some embodiments, the frame 300 has a first opening 310 and a second opening 320 disposed opposite to each other. A first sub-circuit board 210 covers the first opening 310, and a second sub-circuit board 220 covers the second opening 320 to enclose and form an electromagnetic shielding space a. In this case, the first sub-circuit board 210 and the second sub-circuit board 220 are located on different planes, wherein the orthographic projection of the first sub-circuit board 210 onto the plane containing the first opening 310 and the orthographic projection of the second sub-circuit board 220 onto the plane containing the first opening 310 at least partially overlap. Compared with the case where the circuit board is a one-piece structure, this can avoid the circuit board being too long or too wide, thereby facilitating the optimization of spatial layout and thus facilitating the miniaturization of the product.

[0046] In some embodiments, the housing 300 is made of a metal material so that the housing 300 can shield the radio frequency radiation generated when the radio frequency component 211 is in operation.

[0047] It should be noted that in some other embodiments, the frame 300 may also be made of non-metallic materials. In this case, the surface of the frame 300 is coated with a metal shielding layer so that the frame 300 can shield the radio frequency radiation generated when the radio frequency component 211 is working.

[0048] Reference Figures 3 to 7 In some embodiments, the sidewall of the frame 300 is provided with an air inlet 330 and an air outlet (not shown in the figure) connected to the electromagnetic shielding space a. The radio frequency component 211 is located between the air inlet 330 and the air outlet in the electromagnetic shielding space a. That is, the airflow from the air inlet 330 to the air outlet can flow through the radio frequency component 211, so that the heat generated by the radio frequency component 211 when it is working can be carried out to the outside of the electromagnetic shielding space a by the airflow from the air inlet 330 to the air outlet. This helps to reduce the risk of overheating of the radio frequency component 211 and thus helps to extend the service life of the radio frequency component 211.

[0049] In some embodiments, a power control component (not shown) is disposed on the second sub-circuit board 220. The power control component is located within the electromagnetic shielding space a, between the air inlet 330 and the air outlet. This allows airflow from the air inlet 330 to the air outlet to pass through the power control component, enabling the heat generated during operation to be carried away by the airflow from the air inlet 330 to the outside of the electromagnetic shielding space a. This reduces the risk of overheating of the power control component and extends its service life. Alternatively, the radio frequency (RF) component 211 is disposed on the first sub-circuit board 210, while the power control component is disposed on the second sub-circuit board 220. This complete separation of the RF component 211 and the power control component helps reduce the impact of heat generated by either component on the other.

[0050] In some embodiments, the radio frequency (RF) component 211 is closer to the air outlet than the air inlet 330, and the power control component is closer to the air inlet 330 than the RF component 211. The RF component 211 experiences more significant heat loss during operation than the power control component, meaning it generates more heat. Therefore, by configuring the RF component 211 closer to the air outlet than the air inlet 330, and the power control component closer to the air inlet 330 than the RF component 211, when airflow moves from the air inlet 330 to the air outlet, the power control component is upstream of the airflow, and the RF component 211 is downstream. This prevents the heat carried away by the airflow from the RF component 211 from passing through the power control component, further reducing the impact of the heat generated by the RF component 211 on the power control component.

[0051] Reference Figure 6 and Figure 7 In some embodiments, the air inlet 330 and the air outlet are spaced apart along a first direction. A plurality of guide plates 340 are provided inside the frame 300. The plurality of guide plates 340 are spaced apart along the first direction. Two adjacent guide plates 340 are staggered along directions intersecting the first direction, which helps to extend the path of the airflow from the air inlet 330 to the air outlet, thereby increasing the heat exchange time so that the airflow can carry away more heat, thereby improving the heat dissipation efficiency.

[0052] It should be noted that the first direction mentioned above is the X direction in the attached diagram.

[0053] Specifically, the airflow guide 340 is configured to guide airflow to at least the radio frequency component 211 and the power control component. Furthermore, the position and shape of the airflow guide 340 can be designed so that the airflow entering the electromagnetic shielding space a can also be guided by the airflow guide 340 to other electrical components with high heat loss on the first sub-circuit board 210 and the second sub-circuit board 220.

[0054] In some embodiments, the aerosol generating device further includes an airflow generating device 400, which is disposed at the air inlet 330 or the air outlet. The airflow generating device 400 is used to actively generate airflow from the air inlet 330 to the air outlet. Compared with naturally formed airflow, the airflow actively generated by the airflow generating device 400 has a faster flow rate and can more quickly and efficiently carry away the heat generated by electrical components with large heat loss, such as the radio frequency component 211 and the power control component, to the outside of the electromagnetic shielding space a.

[0055] Reference Figures 1 to 3 In some embodiments, the airflow generating device 400 is located outside the electromagnetic shielding space a and is disposed at the air inlet 330. The air outlet of the airflow generating device 400 faces the air inlet 330, and the positive pressure formed by the air outlet of the airflow generating device 400 is used to generate airflow from the air inlet 330 to the air outlet.

[0056] It should be noted that in some other embodiments, the airflow generating device 400 is located outside the electromagnetic shielding space a and is disposed at the air outlet. The air inlet of the airflow generating device 400 faces the air outlet, and the negative pressure formed by the air inlet of the airflow generating device 400 is used to generate airflow from the air inlet 330 to the air outlet.

[0057] It should be noted that in some other embodiments, the airflow generating device 400 may also be located in the electromagnetic shielding space a. When the airflow generating device 400 is located at the air inlet 330, the air inlet end of the airflow generating device 400 faces the air inlet 330. When the airflow generating device 400 is located at the air outlet, the air outlet end of the airflow generating device 400 faces the air outlet.

[0058] Reference Figures 1 to 3 In some of these embodiments, the airflow generating device 400 is a fan.

[0059] It should be noted that in some other embodiments, the airflow generating device 400 is a miniature air pump.

[0060] In the description of this specification, the use of terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0061] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An aerosol generating device, characterized in that, include: A microwave heating element for heating an aerosol generation matrix; The circuit board includes a first sub-circuit board and a second sub-circuit board, which are electrically connected. A radio frequency (RF) component is disposed on the first sub-circuit board and coupled to the microwave heating element. A frame is disposed between the first sub-circuit board and the second sub-circuit board, and the frame, together with the first sub-circuit board and the second sub-circuit board, forms an electromagnetic shielding space to accommodate the radio frequency component.

2. The aerosol generating device as described in claim 1, characterized in that, The aerosol generating device further includes a power supply cell electrically connected to the first sub-circuit board and the second sub-circuit board, and the power supply cell is located outside the electromagnetic shielding space.

3. The aerosol generating device as described in claim 1, characterized in that, The frame has a first opening and a second opening that are arranged opposite to each other. The first sub-circuit board covers the first opening, and the second sub-circuit board covers the second opening to enclose and form the electromagnetic shielding space.

4. The aerosol generating device as described in claim 1, characterized in that, The frame is made of metal, or the surface of the frame is coated with a metal shielding layer.

5. The aerosol generating apparatus according to any one of claims 1 to 4, characterized in that, The side wall of the frame is provided with an air inlet and an air outlet that communicate with the electromagnetic shielding space, and the radio frequency component is located between the air inlet and the air outlet within the electromagnetic shielding space.

6. The aerosol generating apparatus as described in claim 5, characterized in that, The second sub-circuit board is provided with a power control component, which is located within the electromagnetic shielding space and between the air inlet and the air outlet.

7. The aerosol generating apparatus as described in claim 6, characterized in that, The radio frequency component is closer to the air outlet than the air inlet, and the power control component is closer to the air inlet than the radio frequency component.

8. The aerosol generating device as described in claim 5, characterized in that, The air inlet and the air outlet are spaced apart along a first direction. Multiple guide plates are provided inside the frame. The multiple guide plates are spaced apart along the first direction, and two adjacent guide plates are staggered along directions intersecting the first direction.

9. The aerosol generating device as described in claim 5, characterized in that, The aerosol generating device further includes an airflow generating device, which is disposed at the air inlet or the air outlet, and is used to actively generate airflow from the air inlet to the air outlet.

10. The aerosol generating apparatus as described in claim 9, characterized in that, The airflow generating device is a fan or a miniature air pump.

Images