CN218921716U - Airflow sensor assembly and aerosol generating device - Google Patents

Abstract

The application provides an airflow sensor assembly and an aerosol generating device, wherein the airflow sensor assembly comprises a substrate, an air passage plate, a sealing cover piece and an airflow sensor, and particularly, the surface of the air passage plate is provided with a first air guide groove and a first through hole which are communicated; the first air guide groove is arranged on the surface of the air passage plate close to the substrate or the surface far from the substrate; the sealing cover piece seals the first air guide groove to form a first air flow channel in cooperation with the first air guide groove; one end of the first airflow channel is communicated with the air inlet hole, and the other end of the first airflow channel is communicated with the airflow sensor. Through the arrangement, the arrangement of the three-dimensional air passage in the micro space is realized, and the device is applicable to different aerosol generating devices.

Description

Airflow sensor assembly and aerosol generating device

Technical Field

The present application relates to the field of atomization, and more particularly, to an airflow sensor assembly and an aerosol generating device.

Background

Aerosol-generating means for atomizing an aerosol-generating substrate to generate an aerosol, for example, baking a stem-leaf type solid aerosol-generating substrate in a manner that is not combusted by heating to generate an aerosol; heating and atomizing a liquid aerosol-generating substrate containing a fragrance and flavor by means of electric heating to generate an aerosol; or a combination of the two atomization modes to produce a mixed aerosol.

The aerosol generating device is generally internally provided with an airflow sensor and a power supply assembly, the airflow sensor is used for detecting airflow changes of an air inlet channel in the device, and the power supply assembly is used for controlling the aerosol generating device to atomize aerosol generating substrates according to the airflow changes detected by the airflow sensor.

However, the air inlet channel in the existing aerosol generating device has a certain limitation, for example, the existing air inlet channel connects the air inlet hole of the appliance and the air flow sensor by a straight pipe, and the mode has low applicability and has a certain limitation when the space is small, so the prior art needs to be improved.

Disclosure of Invention

The application provides an airflow sensor assembly and aerosol generating device, can solve current inlet channel suitability not strong, has the problem of certain limitation.

In order to solve the technical problems, a first technical scheme adopted by the application is as follows: there is provided an airflow sensor assembly comprising: a base plate having an air inlet hole; an air passage plate arranged on one side of the base plate; the surface of the airway plate is provided with a first air guide groove and a first through hole which are communicated with each other; the first air guide groove is arranged on the surface of the air passage plate close to the base plate or the surface far away from the base plate; a cover member; the first air guide groove is covered to form a first air flow channel in a matching way with the first air guide groove; the air flow sensor is arranged on one side of the air passage plate and is arranged on the same side as the first air guide groove; the first end of the first air flow channel is communicated with the air inlet hole, and the second end of the first air flow channel is communicated with the air flow sensor.

In an embodiment, the surface of the airway plate further has a second air guide groove in communication with the first air guide groove and the first through hole; the second air guide groove is arranged on the surface of the air passage plate, which is close to the base plate, and is matched with the base plate to form a second air flow channel; the first end of the second air flow channel is communicated with the air inlet hole, and the second end of the second air flow channel is communicated with the first air flow channel through the first through hole.

In an embodiment, the second air guiding groove and the first air guiding groove are arranged in a bending mode.

In an embodiment, the air flow sensor is disposed on a side of the air passage plate facing away from the substrate, the first air guide groove is disposed on a surface of the air passage plate facing away from the substrate, and the first air guide groove is communicated with the second air guide groove through the first through hole.

In one embodiment, the airflow sensor assembly includes a flexible circuit board including a first connection portion disposed at least partially between the airway plate and the airflow sensor and electrically connected to the airflow sensor; the first connecting part is used as the sealing cover piece, the first connecting part is matched with the first air guide groove to form the first air flow channel, and a second through hole is formed in the position, corresponding to the air flow sensor, of the first connecting part.

In one embodiment, the airflow sensor assembly further comprises: the first sealing gasket is arranged on one side of the first connecting part, which is away from the airway plate, and is provided with a fourth through hole for accommodating the airflow sensor; the mounting seat is arranged on one side, away from the first connecting part, of the first sealing gasket, the surface, close to the first sealing gasket, of the mounting seat is provided with a containing groove, and the air flow sensor penetrates through the fourth through hole and is contained in the containing groove.

In an embodiment, the first sealing pad further has a fifth through hole disposed corresponding to the first through hole; the mounting seat is provided with a sixth through hole which is arranged corresponding to the fifth through hole; the airflow sensor assembly further includes: the second sealing gasket is arranged on one side, away from the first sealing gasket, of the mounting seat, and the second sealing gasket is provided with a seventh through hole which is arranged corresponding to the sixth through hole.

In one embodiment, the airflow sensor assembly includes a first gasket as the cover; the first sealing gasket is matched with the first air guide groove to form the first air flow channel, and a third through hole is formed in the position, corresponding to the air flow sensor, of the first sealing gasket.

In an embodiment, the substrate is at least part of a bottom wall of the aerosol-generating device, the airflow sensor assembly further comprising: the rotating shaft is arranged at one end of the base plate and is used for being in rotating connection with other parts of the bottom wall so that the airflow sensor assembly can rotate relative to the other parts of the bottom wall; the buckle assembly is arranged at the other end of the base plate and is used for being clamped with other parts of the bottom wall.

In order to solve the technical problems, a second technical scheme adopted by the application is as follows: there is provided an aerosol-generating device comprising: a housing; a nebulizer disposed within the housing, the nebulizer for nebulizing an aerosol-generating substrate to generate an aerosol; an airflow sensor assembly according to any one of the preceding claims, wherein the airflow sensor assembly is disposed at the bottom of the atomizer; and the power supply assembly is electrically connected with the atomizer and an airflow sensor in the airflow sensor assembly so as to control the atomizer to work based on the airflow change detected by the airflow sensor.

Unlike the prior art, the air passage pipe assembly and the aerosol generating device provided by the application comprise a base plate, an air passage plate, a sealing cover piece and an air flow sensor, wherein the base plate is provided with an air inlet hole; the airway plate is arranged on one side of the base plate; the surface of the airway plate is provided with a first air guide groove and a first through hole which are communicated with each other; the first air guide groove is arranged on the surface of the air passage plate close to the substrate or the surface far from the substrate; the sealing cover piece seals the first air guide groove to form a first air flow channel in cooperation with the first air guide groove; the air flow sensor is arranged on one side of the air passage plate and is arranged on the same side as the first air guide groove; the first end of the first air flow channel is communicated with the air inlet hole, and the second end of the first air flow channel is communicated with the air flow sensor. Through the arrangement, the arrangement of the three-dimensional air passage in the micro space is realized, and the device is applicable to different aerosol generating devices.

Drawings

For a clearer description of the technical solutions in the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic diagram of an embodiment of an airflow sensor assembly provided herein;

FIG. 2 is an exploded view of the structure of the airflow sensor assembly shown in FIG. 1;

FIG. 3 is a cross-sectional view of the airflow sensor assembly shown in FIG. 1;

FIG. 4 is a schematic view of the structure of the substrate shown in FIG. 1;

FIG. 5 is a schematic view of the structure of the airway plate shown in FIG. 1;

FIG. 6 is a schematic view of the structure of the substrate shown in FIG. 1 at another angle;

fig. 7 is a schematic structural view of the flexible wiring board shown in fig. 1;

FIG. 8 is a schematic view of the first seal shown in FIG. 1;

FIG. 9 is a schematic view of the mounting block shown in FIG. 1;

FIG. 10 is a schematic view of the mount shown in FIG. 1 from another perspective;

FIG. 11 is a schematic view of the second gasket shown in FIG. 1;

FIG. 12 is a schematic view of the snap assembly shown in FIG. 1;

fig. 13 is a schematic structural view of an embodiment of an aerosol-generating system provided herein;

fig. 14 is a cross-sectional view of the aerosol-generating system shown in fig. 13;

fig. 15 is a structural enlarged view of the region a as shown in fig. 14.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terms "first," "second," "third," and the like in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The present application is described in detail below with reference to the accompanying drawings and examples.

The aerosol-generating device generally comprises a nebulizer and a power supply assembly electrically connected to each other, wherein an aerosol-generating substrate is stored in the nebulizer, and the power supply assembly is configured to supply power to the nebulizer to cause the nebulizer to nebulize the aerosol-generating substrate to generate an aerosol for use by a user. Among them, the aerosol generating device can be used in different fields such as medical atomization, cosmetic atomization, leisure food inhalation, etc.

Wherein the aerosol generating device further comprises an airflow sensor electrically connected to the power supply assembly for detecting a change in airflow within the aerosol generating device. The airflow sensor can be a microphone, a silicone microphone or a differential pressure sensor. Specifically, an air inlet is generally formed in a housing of the aerosol generating device, when a user sucks the aerosol generating device, external air enters the aerosol generating device from the air inlet to change airflow in the aerosol generating device, and the power supply assembly controls the atomizer to work so as to atomize aerosol generating matrixes stored in the atomizer based on the change of the airflow in the aerosol generating device detected by the airflow sensor.

The existing aerosol generating device is characterized in that an air inlet hole of the shell is connected with an air flow sensor and an air inlet of the atomizer through a straight pipe, but the arrangement mode has certain space limitation and low applicability.

Referring to fig. 1-3, fig. 1 is a schematic structural view of an embodiment of an airflow sensor assembly provided herein; FIG. 2 is an exploded view of the structure of the airflow sensor assembly shown in FIG. 1; FIG. 3 is a cross-sectional view of the airflow sensor assembly shown in FIG. 1.

To solve the above-mentioned problems, the present application provides an airflow sensor assembly 10 including a base plate 11, an air passage plate 12, a cover member 13, and an airflow sensor 14. The base plate 11 may be a part of a housing of the aerosol generating device, the base plate 11 has an air inlet 111, and the base plate 11, the air channel plate 12 and the cover 13 are stacked to form a first air flow channel communicating with the air inlet 111 and the air flow sensor 14, so as to realize the arrangement of a three-dimensional air channel in a micro space, and be applicable to different aerosol generating devices.

Referring to fig. 1-6, fig. 4 is a schematic structural view of the substrate shown in fig. 1; FIG. 5 is a schematic view of the structure of the airway plate shown in FIG. 1; fig. 6 is a schematic view of the structure of the substrate shown in fig. 1 at another angle.

Specifically, the base plate 11 has an air inlet hole 111, and the air passage plate 12 is disposed on one side of the base plate 11; the surface of the airway plate 12 has a first air guide groove 122 and a first through hole 123 which are communicated; wherein, the first air guiding groove 122 is arranged on the surface of the air channel plate 12 close to the base plate 11 or the surface far from the base plate 11; the cover 13 covers the first air guiding groove 122 to form a first air flow channel (not shown) in cooperation with the first air guiding groove 122; the air flow sensor 14 is disposed on one side of the airway plate 12 and on the same side as the first air guide groove 122. Wherein a first end of the first air flow channel is adapted to communicate with the air inlet aperture 111 and a second end of the first air flow channel is adapted to communicate with the air flow sensor 14. Through the arrangement mode, the arrangement of the three-dimensional air passage in the micro space is realized, the utilization rate of the transverse space is improved, and the device is applicable to different aerosol generating devices.

The first end of the first airflow channel may be directly communicated with the air inlet 111, and the first end of the first airflow channel may also be communicated with the air inlet 111 through other airflow channels.

Specifically, when the user pumps the aerosol generating device, external air enters the first airflow channel through the air inlet hole 111 on the base plate 11 and flows to a position corresponding to the airflow sensor 14 along the first airflow channel, and the power supply assembly controls the atomizer to work according to the airflow change detected by the airflow sensor 14.

With continued reference to fig. 1, the surface of the airway plate 12 further has a second air guiding groove 121 in communication with the first air guiding groove 122 and the first through hole 123; the second air guiding groove 121 is disposed on the surface of the air channel plate 12 near the substrate 11, and cooperates with the substrate 11 to form a second air flow channel (not shown). Wherein, the first end of the second air flow channel is communicated with the air inlet hole 111, and the second end of the second air flow channel is communicated with the air inlet of the atomizer through the first through hole 123; the first end of the first air flow channel communicates with the second air flow channel, or the second end of the second air flow channel communicates with the first air flow channel through the first through hole 123, so that the first air flow channel communicates with the air intake hole 111 through the second air flow channel, and the second end of the first air flow channel communicates with the air flow sensor 14.

Specifically, when the user pumps the aerosol generating device, external air first enters the second airflow channel through the air inlet hole 111 on the base plate 11, then is split in the second airflow channel, one part enters the atomizer through the first through hole 123 and the air inlet of the atomizer, and the other part enters the first airflow channel and flows to the position corresponding to the airflow sensor 14 along the first airflow channel, and the power supply component controls the atomizer to work according to the airflow change detected by the airflow sensor 14.

It can be appreciated that the airflow sensor assembly 10 in this embodiment integrates a first airflow channel connected to the airflow sensor 14 and a second airflow channel connected to the air inlet of the atomizer, so as to implement the arrangement of a three-dimensional air channel in a micro space, improve the utilization rate of the transverse space, and be applicable to different aerosol generating devices. And the transverse design of the second air guide groove 121 can prolong the path of external air entering the atomizer, so as to solve the problem of reverse flow leakage of aerosol generated by the atomizer.

In this application, the airflow sensor 14 is disposed on one side of the air passage plate 12 facing away from the substrate 11, and the first air guiding groove 122 is disposed on the surface of the air passage plate 12 facing away from the substrate 11, where the first air guiding groove 122 is communicated with the second air guiding groove 121 through the first through hole 123. It can be appreciated that the second air guiding groove 121 and the first air guiding groove 122 are respectively disposed on two opposite surfaces of the air passage plate 12 and are communicated through the first through hole 123, and the paths of the second air guiding groove 121 and the first air guiding groove 122 are not affected by each other, which is beneficial to optimizing the arrangement form of the second air guiding groove 121 and the first air guiding groove 122, and avoiding the influence on the arrangement paths of the second air guiding groove 121 and the first air guiding groove 122 when the second air guiding groove 121 and the first air guiding groove 122 are disposed on the same surface of the air passage plate 12.

In one embodiment, referring to fig. 6, the second air guide groove 121 is curved such that the second air flow path is formed in a curved configuration for the purpose of extending the length of the air path of the second air flow path, preventing the backward discharge of aerosol from the second air flow path, and preventing the blockage of the second air flow path by aerosol condensate.

In an embodiment, referring to fig. 5, the first air guiding groove 122 is curved, so that the first air flow channel is formed in a curved manner, and the purpose of the first air guiding groove is to offset the air inlet of the atomizer corresponding to the first through hole 123 from the air flow sensor 14, so as to save longitudinal space. In addition, the length of the air passage of the first air flow channel can be prolonged, so that the air flow sensor 14 is prevented from being triggered by mistake due to the fact that the aerosol is discharged from the first air flow channel to the air flow sensor 14 in a countercurrent mode, and the first air flow channel is prevented from being blocked by aerosol condensate.

Wherein, the cover member 13 cooperating with the first air guiding groove 122 to form the first air flow channel may be a part of the flexible circuit board 15 (see fig. 3); or may be a first gasket 16 (not shown) for sealing the airflow sensor.

Specifically, referring to fig. 7, fig. 7 is a schematic structural view of the flexible circuit board shown in fig. 1. In one embodiment, the airflow sensor assembly 10 includes a flexible circuit board 15, the flexible circuit board 15 being used to electrically connect the airflow sensor 14 and the power supply assembly. The flexible circuit board 15 includes a first connection portion 151 and a second connection portion 152, where the first connection portion 151 is at least partially disposed between the air channel board 12 and the air flow sensor 14 and is electrically connected to the air flow sensor 14, and the second connection portion 152 extends to the power supply assembly for electrically connecting the air flow sensor 14 to the power supply assembly. The first connecting portion 151 is used as the cover 13 to cover the first air guiding groove 122, so as to form a first air flow channel in cooperation with the first air guiding groove 122, and the position of the first connecting portion 151 corresponding to the air flow sensor 14 is provided with a second through hole 153, so that the air flow sensor 14 detects the air flow change in the first air flow channel through the second through hole 153. In particular, in the present embodiment, the flexible circuit board 15 is used for electrically connecting the airflow sensor 14 and the power supply assembly, and is also used for forming the first airflow channel in cooperation with the first air guiding groove 122, so that the number of components of the airflow sensor assembly 10 can be reduced, which is beneficial to miniaturization and weight saving of the airflow sensor assembly 10.

The airflow sensor 14 is welded to a surface of the first connecting portion 151 facing away from the airway plate 12, and two opposite surfaces of the first connecting portion 151 are provided with soft sealing materials for airtight sealing. Wherein, soft sealing material includes foam, double faced adhesive tape, silica gel, etc.

In this embodiment, referring to fig. 3 and 7, the power supply assembly also supplies power to the atomizer through the flexible circuit board 15. Specifically, the flexible wiring board 15 further includes two electrical contacts 154 provided on the first connection portion 151, the two electrical contacts 154 being for electrical connection with the atomizer.

In another embodiment (not shown), the flexible circuit board 15 is electrically connected to the airflow sensor 14, but the first connection portion 151 of the flexible circuit board 15 is not disposed between the air passage board 12 and the airflow sensor 14, and the airflow sensor assembly 10 includes the first gasket 16, and the first gasket 16 seals the first air guide groove 122 as the cover 13 to form the first airflow passage in cooperation with the first air guide groove 122. The first sealing pad 16 has a third through hole corresponding to the position of the airflow sensor 14, and the airflow sensor 14 is accommodated in the third through hole. In particular, in the present embodiment, the first sealing gasket 16 is used for sealing the airflow sensor 14 and also is used for forming the first airflow channel in cooperation with the first air guiding groove 122, so that the number of components of the airflow sensor assembly 10 can be reduced, which is beneficial to miniaturization and weight reduction of the airflow sensor assembly 10.

For convenience of description, the first air guiding groove 122 is disposed on the surface of the air channel plate 12 facing away from the substrate 11, and the first connection portion 151 of the flexible circuit board 15 is described as the cover 13.

Wherein, referring to fig. 3 and 8, fig. 8 is a schematic structural view of the first seal shown in fig. 1. The airflow sensor assembly 10 further includes a first gasket 16, the first gasket 16 is disposed on a side of the first connection portion 151 facing away from the airway plate 12, and the first gasket 16 has a fourth through hole 161 for accommodating the airflow sensor 14. Specifically, the first sealing gasket 16 is used for sealing the airflow sensor 14 and the first airflow channel, so as to ensure the accuracy of the detection of the airflow sensor 14. The material of the first sealing pad 16 includes silica gel, rubber, foam, double-sided adhesive tape, and the like. In addition, when the flexible circuit board 15 includes two electrical contacts 154, the first sealing pad 16 further has two first through holes 163 correspondingly provided so that the two electrical contacts 154 can be electrically connected with the atomizer through the first sealing pad 16.

Referring to fig. 3, 9 and 10, the airflow sensor assembly 10 further includes a mounting seat 17, the mounting seat 17 is disposed on a side of the first sealing pad 16 facing away from the first connecting portion 151, and a surface of the mounting seat 17, which is close to the first sealing pad 16, is provided with a receiving groove 171, and the airflow sensor 14 is received in the receiving groove 171 through the fourth through hole 161. Specifically, the mounting 17 is used to secure and protect the airflow sensor 14. In addition, when the flexible circuit board 15 includes two electrical contacts 154, the mounting base 17 further has two second vias 172 correspondingly disposed so that the two electrical contacts 154 can be electrically connected to the atomizer through the mounting base 17.

Further, the first sealing pad 16 further extends to cover the first through hole 123, and the first sealing pad 16 further has a fifth through hole 162 disposed corresponding to the first through hole 123, so as to improve the air tightness between the first through hole 123 and the atomizer interface.

Further referring to fig. 3, 9 and 11, the airflow sensor assembly 10 further includes a second gasket 18, and the mounting seat 17 also extends to cover the first through hole 123 to carry the second gasket 18. Specifically, the mounting seat 17 has a sixth through hole 173 corresponding to the first through hole 123 and the fifth through hole 162, the second gasket 18 is disposed on a side of the mounting seat 17 facing away from the first gasket 16, and the second gasket has a seventh through hole 181 corresponding to the sixth through hole 173. The second sealing pad 18 is used for further improving the air tightness between the first through hole 123 and the atomizer interface, and the material of the second sealing pad 18 includes silica gel, rubber, foam, double-sided adhesive tape, and the like. In addition, when the flexible circuit board 15 includes two electrical contacts 154, the second sealing pad 18 further has two third through holes 182 correspondingly disposed so that the two electrical contacts 154 can be electrically connected with the atomizer through the second sealing pad 18.

In addition, in the present application, the air passage plate 12 is hermetically connected to the base plate 11, so as to improve the air tightness of the second air flow passage formed by the cooperation of the air passage plate 12 and the base plate 11.

Unlike the prior art, the airflow sensor assembly 10 provided herein has the following advantages: first, the airflow sensor assembly 10 includes a base plate 11, an airway plate 12, a cover 13, and an airflow sensor 14. The base plate 11 may be a part of a housing of the aerosol generating device, the base plate 11 has an air inlet hole 111, and the base plate 11, the air channel plate 12 and the cover 13 are stacked to form a second air flow channel communicating with the air inlet hole 111 and the air inlet of the atomizer and a first air flow channel communicating with the second air flow channel and the air flow sensor 14, so that the arrangement of a three-dimensional air channel in a micro space is realized, and the aerosol generating device is applicable to different aerosol generating devices. Second, the second air guide groove 121 and the first air guide groove 122 are curved, so that the formed second air flow channel and first air flow channel are curved, and therefore, aerosol generated in the atomizer can be prevented from flowing back into the second air flow channel and the first air flow channel, the second air flow channel and the first air flow channel are blocked, aerosol condensate flowing back into the second air flow channel is prevented from flowing out of the air inlet hole 111, cleaning is caused, and in addition, the aerosol flowing back into the first air flow channel can be prevented from triggering the air flow sensor 14 by mistake. Third, the cover 13 that cooperates with the first air guiding groove 122 to form the first air flow channel may be a part of the flexible circuit board 15, or may be the first sealing pad 16 for sealing the air flow sensing, so that the number of components of the air flow sensor assembly 10 may be reduced, which is beneficial to miniaturization and light weight of the air flow sensor assembly 10.

In addition, the substrate 11 in the present application may be a part constituting the housing of the aerosol-generating device, and may be integrally formed with other parts of the housing, or may be rotatably connected.

In an embodiment, the base plate 11 is at least part of the bottom wall of the housing of the aerosol generating device and may be rotatably connected with other parts of the bottom wall, so that the base plate 11 may be relatively opened or closed with respect to the other parts of the bottom wall, and other parts in the airflow sensor assembly 10 are fixedly connected with the base plate 11, and the entire airflow sensor assembly 10 rotates synchronously when the base plate 11 is opened or closed with respect to the other parts of the bottom wall.

Further, the atomizer and housing within the aerosol-generating device are removably connected so that when the airflow sensor assembly 10 is opened relative to the remainder of the bottom wall, a user may remove or mount the atomizer from the bottom wall, thereby facilitating the user's replacement of a new atomizer after the aerosol-generating substrate within the atomizer has been consumed, or to reassemble the atomizer after the new aerosol-generating substrate has been replenished after the atomizer has been removed.

Specifically, in the present embodiment, referring to fig. 3, the airflow sensor assembly 10 further includes a rotating shaft 112 and a buckle assembly 19, where the rotating shaft 112 is disposed at one end of the base plate 11 and is used for being rotationally connected with other parts of the bottom wall, so that the airflow sensor assembly 10 is rotatable relative to the other parts of the bottom wall; the fastening component 19 is disposed at the other end of the base plate 11, and is used for being fastened with other parts of the bottom wall. It will be appreciated that the catch assembly 19 is used to limit rotation of the airflow sensor assembly 10, and a user may operate the catch assembly 19 to limit rotation of the airflow sensor assembly 10 about the axis of rotation 112, or to de-limit the airflow sensor assembly 10 such that the airflow sensor assembly 10 may be rotated about the axis of rotation 112 to detach or mount the atomizer.

In the present embodiment, the second connection portion 152 is electrically connected to the power supply assembly through a gap between the rotation shaft 112 and the substrate 11. It will be appreciated that, due to the flexibility of the flexible circuit board 15, a certain degree of bending may be achieved, and the second connection portion 152 may deform to a certain extent, but not break, when the airflow sensor assembly 10 rotates around the rotation shaft 112, so as to ensure electrical connection between the airflow sensor 14 and the power supply assembly.

In one embodiment, with reference to fig. 3, 4, 12 and 15, fig. 12 is a schematic structural view of the buckle assembly shown in fig. 1; fig. 15 is a structural enlarged view of the region a as shown in fig. 14. The buckle assembly 19 includes a sliding member 191 and an elastic element 192, the housing 50 has a fastener 51, specifically, an inner side surface of one end of the substrate 11 facing away from the rotating shaft 112 has a mounting groove 113, the sliding member 191 has an operation portion 193 and a second abutting portion 194 which are fixedly connected, the operation portion 193 is disposed on an outer side surface of the substrate 11, the second abutting portion 194 is disposed in the mounting groove 113, the elastic element 192 abuts between one end of the second abutting portion 194 and a groove wall of the mounting groove 113, and the fastener 51 is located at one end of the second abutting portion 194 facing away from the elastic element 192. Specifically, in a natural state, since the elastic potential energy of the elastic element 192 abuts the second abutting portion 194 on the clamping member 51, the clamping member 51 limits the sliding member 191, so as to limit the rotation of the airflow sensor assembly 10, when a user needs to detach or install the atomizer 20, the sliding operation portion 193 drives the second abutting portion 194 to move towards the direction of the elastic element 192, so as to compress the elastic element 192, so that the second abutting portion 194 is separated from the clamping member 51, the limitation of the clamping member 51 on the sliding member 191 is released, and the airflow sensor assembly 10 can rotate around the rotating shaft 112, so as to open the bottom wall, and detach or install the atomizer 20.

Of course, in other embodiments, the elastic element 192 and the rotating shaft 112 may not be provided, and the base plate 11 of the airflow sensor assembly 10 may be fastened to other parts of the bottom wall, so long as the airflow sensor assembly 10 can be opened or closed relatively to other parts of the bottom wall. For example, the edge of the base plate 11 has a limit protrusion, the other part of the bottom wall has a groove, the airflow sensor assembly 10 is fastened and fixed with the groove through the limit protrusion, and the limit protrusion of the airflow sensor assembly 10 is detachable from the groove, so that the bottom wall can be opened to realize the disassembly or the installation of the atomizer.

Referring to fig. 13 and 14, fig. 13 is a schematic structural view of an embodiment of an aerosol-generating system provided herein; fig. 14 is a cross-sectional view of the aerosol-generating system shown in fig. 13.

The aerosol-generating system 300 comprises an aerosol-generating device 100 and an aerosol-generating article 200, wherein the aerosol-generating article 200 comprises a plant stem-leaf based solid aerosol-generating substrate of a specific aroma, and the aerosol-generating device 100 is adapted to heat the aerosol-generating article 200 to generate a first aerosol. The aerosol generating device 100 includes an airflow sensor assembly 10, an atomizer 20, a heating element assembly 30, a power supply assembly 40, and a housing 50. Wherein, atomizer 20, heat-generating body subassembly 30, power supply unit 40 set up in shell 50, and air current sensor subassembly 10 sets up in the diapire of shell 50 for atomizer 20 air feed, and detect the air current change in the aerosol generating device 100. Specifically, the heating element assembly 30 is configured to heat the aerosol-generating article 200 contained in the aerosol-generating device 100 to generate a first aerosol, the atomizer 20 is disposed below the heating element assembly 30, and a liquid aerosol-generating substrate is stored in the atomizer 20 and is configured to heat the liquid aerosol-generating substrate to generate a second aerosol. The atomizer 20, the heat generating body assembly 30, and the air flow sensor 14 in the air flow sensor assembly 10 are respectively electrically connected with the power supply assembly 40, and the power supply assembly 40 is used for supplying power to the atomizer 20 and the heat generating body assembly 30, and controlling the atomizer 20 and the heat generating body assembly 30 to operate according to the air flow change detected by the air flow sensor 14.

In other embodiments, the aerosol-generating device 100 may also not include the heater assembly 30, and the aerosol-generating device 100 is merely used to heat a liquid aerosol-generating substrate to generate a second aerosol, without limitation.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.

Claims (10)

1. An airflow sensor assembly for use in an aerosol generating device, comprising:

a base plate having an air inlet hole;

an air passage plate arranged on one side of the base plate; the surface of the airway plate is provided with a first air guide groove and a first through hole which are communicated with each other; the first air guide groove is arranged on the surface of the air passage plate close to the base plate or the surface far away from the base plate;

a cover member; the first air guide groove is covered to form a first air flow channel in a matching way with the first air guide groove;

the air flow sensor is arranged on one side of the air passage plate and is arranged on the same side as the first air guide groove;

the first end of the first air flow channel is used for being communicated with the air inlet hole, and the second end of the first air flow channel is communicated with the air flow sensor.

2. The airflow sensor assembly of claim 1 wherein the surface of the airway plate further has a second air guide groove in communication with the first air guide groove and the first through hole; the second air guide groove is arranged on the surface of the air passage plate, which is close to the base plate, and is matched with the base plate to form a second air flow channel; the first end of the second air flow channel is communicated with the air inlet hole, and the second end of the second air flow channel is communicated with the first air flow channel through the first through hole.

3. The airflow sensor assembly of claim 2 wherein said second air guide groove and said first air guide groove are curved.

4. The air flow sensor assembly of claim 1, wherein the air flow sensor is disposed on a side of the air passage plate facing away from the substrate, the first air guide groove is disposed on a surface of the air passage plate facing away from the substrate, and the first air guide groove is in communication with the second air guide groove through the first through hole.

5. The airflow sensor assembly of claim 1, comprising a flexible circuit board including a first connection portion disposed at least partially between the airway plate and the airflow sensor and electrically connected to the airflow sensor; the first connecting part is used as the sealing cover piece, the first connecting part is matched with the first air guide groove to form the first air flow channel, and a second through hole is formed in the position, corresponding to the air flow sensor, of the first connecting part.

6. The airflow sensor assembly of claim 5 further comprising:

the first sealing gasket is arranged on one side of the first connecting part, which is away from the airway plate, and is provided with a fourth through hole for accommodating the airflow sensor;

the mounting seat is arranged on one side, away from the first connecting part, of the first sealing gasket, the surface, close to the first sealing gasket, of the mounting seat is provided with a containing groove, and the air flow sensor penetrates through the fourth through hole and is contained in the containing groove.

7. The airflow sensor assembly of claim 6 wherein said first gasket further has a fifth through hole disposed in correspondence with said first through hole; the mounting seat is provided with a sixth through hole which is arranged corresponding to the fifth through hole;

the airflow sensor assembly further includes:

the second sealing gasket is arranged on one side, away from the first sealing gasket, of the mounting seat, and the second sealing gasket is provided with a seventh through hole which is arranged corresponding to the sixth through hole.

8. The airflow sensor assembly of claim 1 wherein the airflow sensor assembly includes a first gasket as the cover; the first sealing gasket is matched with the first air guide groove to form the first air flow channel, and a third through hole is formed in the position, corresponding to the air flow sensor, of the first sealing gasket.

9. The airflow sensor assembly of claim 1 wherein the substrate is at least part of a bottom wall of the aerosol-generating device, the airflow sensor assembly further comprising:

the rotating shaft is arranged at one end of the base plate and is used for being in rotating connection with other parts of the bottom wall so that the airflow sensor assembly can rotate relative to the other parts of the bottom wall;

the buckle assembly is arranged at the other end of the base plate and is used for being clamped with other parts of the bottom wall.

10. An aerosol-generating device, comprising:

a housing;

a nebulizer disposed within the housing, the nebulizer for nebulizing an aerosol-generating substrate to generate an aerosol;

an airflow sensor assembly according to any one of claims 1 to 9; wherein the airflow sensor assembly is disposed at the bottom of the atomizer;

and the power supply assembly is electrically connected with the atomizer and an airflow sensor in the airflow sensor assembly so as to control the atomizer to work based on the airflow change detected by the airflow sensor.

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