Aerosol generating apparatus

Abstract

The present application relates to the technical field of aerosol generation, and the present application provides an aerosol generating apparatus, which comprises a case assembly, a heating member, a microphone, and an elastic film. The case assembly is provided with a containing cavity and a sensing channel. The heating member is arranged inside of the containing cavity, and the heating member is used for heating an aerosol generating matrix to generate aerosol. The microphone is arranged outside of the containing cavity. The sensing channel is in communication with the containing cavity, and the sensing channel is connected to the microphone. The elastic film is disposed within the sensing channel, and the elastic film is used for preventing airflow and liquid from passing through. Moreover, the elastic film and the microphone are spaced apart. The elastic film, an inner wall of the sensing channel, and the microphone enclose to define a sealing cavity. The elastic film is used for generating deformation when there is a change in the air pressure in the sensing channel on the side on which the elastic film is close to the containing cavity, so as to change the air pressure in the sealing cavity. The aerosol generating apparatus in the present application effectively prevents failure of the smoking counting function of the aerosol generating apparatus.

Description

Aerosol generating device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to a Chinese utility model patent application filed on February 28, 2024, with application number 2024203788133 and titled “Aerosol Generating Device,” and claims priority to a Chinese utility model patent application filed on August 23, 2024, with application number 2024220624115 and titled “Heating Not Burning Device,” all of which are incorporated herein by reference. Technical Field

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

[0004] An aerosol-generating device is a device that generates aerosols. By inserting an aerosol-generating substrate into a receiving chamber of the aerosol-generating device, a heating element provided in the receiving chamber heats the substrate, causing the substrate to generate an aerosol for inhalation by the user.

[0005] Existing aerosol generating devices contain a microphone placed in the airway. When the user inhales, the microphone counts the puffs based on changes in airflow. However, oil and water vapor often condense and accumulate in the chamber. Oil is corrosive, and after prolonged use, this oil and water can flow into the microphone, damaging it and rendering the aerosol generating device's puff counting function ineffective. Utility Model Content

[0006] The present application provides an aerosol generating device that can solve the problem of liquid in the airway flowing into the microphone and causing damage to the microphone.

[0007] In order to solve the above technical problems, the present application provides an aerosol generating device, comprising a shell assembly, a heating element, a microphone and an elastic film. The shell assembly is provided with a accommodating cavity and a sensing channel, the accommodating cavity is used to accommodate an aerosol generating matrix, one end of the accommodating cavity has an opening, and the opening is used for the aerosol generating matrix to be inserted into and withdrawn from the accommodating cavity; the heating element is arranged inside the accommodating cavity, and the heating element is used to heat the aerosol generating matrix to generate an aerosol; the microphone is arranged outside the accommodating cavity; the sensing channel is connected to the end of the accommodating cavity away from the opening, and the sensing channel is connected to the microphone; the elastic film is arranged in the sensing channel, and the elastic film is used to prevent airflow and liquid from passing through, and the elastic film is spaced apart from the microphone. The elastic film, the inner wall of the sensing channel and the microphone enclose a sealed cavity, and the elastic film is used to deform when the air pressure in the sensing channel on the side of the elastic film close to the accommodating cavity changes, so as to change the air pressure in the sealed cavity.

[0008] In one embodiment, the aerosol generating device further includes an elastic member, the shell assembly includes a bracket, the sensing channel includes a first channel and a second channel, a accommodating cavity and a first channel are provided in the bracket, and the first channel is connected to a side of the accommodating cavity away from the opening; a second channel is provided in the elastic member, the second channel connects the microphone and the first channel, the elastic film is provided inside the first channel, and / or the elastic film is provided inside the second channel.

[0009] In one embodiment, the elastic film is connected to the inner wall of the second channel, and the elastic film and the elastic member are integrally formed, and the elastic film, the inner wall of the second channel and the microphone form a sealed cavity.

[0010] In one embodiment, the elastic film is configured as a silicone film, a polyethylene film, a rubber film, or a polyurethane film.

[0011] In one embodiment, the cross-section of the elastic film is arched or wavy, and the cross-section is parallel to the central axis of the elastic film.

[0012] In one embodiment, the elastic member includes a sealing portion and an assembly portion that are connected to each other; the sealing portion is arranged around the outer periphery of the side wall of the bracket and is sealed with the outer side wall of the bracket, and the assembly portion abuts against the end of the bracket away from the opening, and a second channel is formed in the assembly portion.

[0013] In one embodiment, the elastic member further includes a mounting portion connected to the assembly portion, the mounting portion having a mounting groove therein, the microphone head being disposed in the mounting groove and having an interference fit with the mounting groove, and the second channel connecting the mounting groove and the first channel;

[0014] The mounting portion is connected to an end surface of the assembly portion away from the sealing portion, or the mounting portion is connected to a side wall of the assembly portion.

[0015] In one embodiment, the microphone includes a microphone body and a microphone protector. The microphone protector is provided with an installation space and a installation hole. The microphone body is provided in the installation space. The installation hole communicates with the second channel and the microphone body.

[0016] In one embodiment, the elastic member includes a sealing portion and an assembly portion connected to each other; the sealing portion is disposed inside the first channel and is sealed to the inner wall of the first channel, and the assembly portion abuts against an end of the bracket away from the opening;

[0017] At least part of the microphone is arranged inside the bracket, and the second channel is formed in the sealing portion; or, the microphone is arranged outside the bracket, and the second channel is formed in the sealing portion and the assembly portion.

[0018] In one embodiment, an air intake channel is provided inside the bracket, and the air intake channel extends from a side close to the opening to a side away from the opening; one end of the air intake channel is connected to the outside of the shell assembly, and the other end is connected to the accommodating cavity via the first channel, or the other end is connected to the accommodating cavity via the second channel and the first channel in sequence.

[0019] In one embodiment, the bracket includes a tube body assembly and a base, a accommodating cavity is provided in the tube body assembly, the base is sealedly connected to the end of the tube body assembly away from the opening, one end of the heating element abuts against the end of the tube body assembly close to the opening, and the other end of the heating element abuts against the base; the air inlet channel is provided on the periphery of the accommodating cavity.

[0020] In one embodiment, the tube assembly includes an inner tube and an outer tube. The outer tube is sleeved on the outer circumference of the inner tube. An air inlet passage is formed between the outer tube and the inner tube. A receiving cavity is formed in the inner tube. The inner tube and the outer tube are detachably connected or integrally formed.

[0021] Alternatively, the pipe body assembly cooperates with the heating element to form an air intake passage.

[0022] In one embodiment, the tube assembly and the base cooperate to form the first channel, or the base forms the first channel.

[0023] In one embodiment, the aerosol generating device further includes a sealing member, which is assembled at one end of the bracket close to the opening, and the sealing member is sealedly connected to the end of the bracket close to the opening; an air guide cavity and a socket are provided in the sealing member, and the socket is connected to the accommodating cavity through the opening; when the aerosol generating substrate is inserted into the accommodating cavity, an air intake gap can be formed between the inner wall of the socket and the aerosol generating substrate, and the air guide cavity is connected to the air intake channel and the air intake gap.

[0024] In one embodiment, the sealing member has a clamping portion for clamping the aerosol-generating substrate, or the aerosol-generating device further comprises a clamping member disposed on a side of the sealing member away from the bracket for clamping the aerosol-generating substrate.

[0025] In one embodiment, the shell assembly further includes an outer shell, and the bracket, elastic member, and microphone are all arranged in the outer shell. The aerosol generating device further includes a fixing member, which is fixed to the outer shell. The fixing member is fixedly connected to the microphone by snapping or pressing.

[0026] The present application provides an aerosol generating device, comprising a housing assembly, a heating element, a microphone, and an elastic film. The housing assembly includes a housing cavity and a sensing channel. The housing cavity is configured to accommodate an aerosol-generating substrate, and one end of the housing cavity has an opening for allowing the substrate to be inserted into and removed from the housing cavity. The heating element is disposed within the housing cavity and configured to heat the substrate to generate an aerosol. The microphone is disposed outside the housing cavity. The sensing channel is connected to the end of the housing cavity away from the opening and is connected to the microphone. The elastic film is disposed within the sensing channel and configured to prevent airflow and liquid from passing through. The elastic film is spaced apart from the microphone. The elastic film, the inner wall of the sensing channel, and the microphone together form a sealed cavity. The elastic film is configured to deform when the air pressure in the sensing channel on the side of the elastic film closest to the housing cavity changes, thereby changing the air pressure within the sealed cavity. The change in air pressure within the sealed cavity can be sensed by the microphone to count the number of puffs taken by the user. When the liquid flows from the containing chamber to the elastic film, it will be blocked by the elastic film and cannot flow into the sealed chamber, thereby being unable to contact the microphone. This effectively prevents the liquid in the containing chamber from flowing to the microphone and causing damage to the microphone, and effectively prevents the failure of the puff counting function of the aerosol generating device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0028] FIG2 is a cross-sectional view of FIG1 ;

[0029] FIG3 is a cross-sectional view of the bracket of FIG2 ;

[0030] FIG4 is a cross-sectional view of the elastic member of FIG2 ;

[0031] FIG5 is a schematic structural diagram of an aerosol generating device provided in a second embodiment of the present application;

[0032] FIG6 is a schematic structural diagram of the sealing member of FIG5 ;

[0033] FIG7 is a schematic structural diagram of the bracket of FIG5 ;

[0034] FIG8 is a schematic cross-sectional view of the elastic member of FIG5 ;

[0035] FIG9 is a cross-sectional view of an elastic member provided in one embodiment of the present application;

[0036] FIG10 is a schematic structural diagram of the elastic member of FIG5 ;

[0037] FIG11 is a cross-sectional view of an aerosol generating device provided in a third embodiment of the present application;

[0038] FIG12 is another cross-sectional view of the aerosol generating device provided in the third embodiment of the present application;

[0039] FIG13 is a cross-sectional view of an aerosol generating device provided in a fourth embodiment of the present application;

[0040] FIG14 is another cross-sectional view of the aerosol generating device provided in the fourth embodiment of the present application;

[0041] FIG15 is another cross-sectional view of the aerosol generating device provided in the fifth embodiment of the present application. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions, and for those skilled in the art, it is not necessary to describe these related operations in detail. They will fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0043] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0044] Component numbers used herein, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0045] Please refer to Figures 1-3. The present application provides an aerosol generating device, which can also be called a heat-not-burn device. The aerosol generating device is used to heat an aerosol generating matrix 10, which can also be called an aerosol matrix structure. The aerosol generating matrix 10 can generate an aerosol after being heated.

[0046] The aerosol generating matrix 10 is generally solid, and can be, for example, a cigarette. The aerosol generating matrix 10 includes at least a suction section and a matrix section. The suction section is arranged outside the aerosol generating device so that the user can inhale with the mouth. The suction section can be provided with a filter material to filter harmful substances in the aerosol. The matrix section includes a grass leaf matrix, which can be, for example, tobacco. The matrix section is arranged inside the aerosol generating device 10 so that the grass leaf matrix is ​​heated by the aerosol generating device 10 to form an aerosol. In one embodiment, the aerosol generating matrix 10 can also include an airway section, which can allow the aerosol generated by the matrix section to pass through and flow to the suction section. The airway section is provided with a cooling hole so that cold air can mix with the aerosol to cool the aerosol and reduce the temperature of the aerosol inhaled by the user.

[0047] The aerosol-generating substrate 10 includes a housing assembly 20, a heater 30, a microphone 40, and an elastic film 50. The housing assembly 20 may include an outer shell 21 and a bracket 22. The bracket 22, heater 30, microphone 40, and elastic film 50 are mounted within the outer shell 21. The housing assembly 20 includes a receiving cavity 221 and a sensing channel 222. The sensing channel 222 may include a portion thereof that allows airflow, and thus may also be referred to as an airflow channel. The receiving cavity 221 is used to accommodate and secure the aerosol-generating substrate 10. One end of the receiving cavity 221 has an opening 2211 for allowing the aerosol-generating substrate 10 to be inserted into and removed from the receiving cavity 221.

[0048] The heating element 30 is arranged inside the accommodating cavity 221, or the heating element 30 is used to cooperate with the shell assembly 20 to form the accommodating cavity 221. The heating element 30 is used to heat the matrix segment of the aerosol generating matrix 10 to generate an aerosol. In one embodiment, the heating element 30 is a heating tube, and the heating tube is arranged on the circumferential side of the matrix segment of the aerosol generating matrix 10 to circumferentially heat the matrix segment of the aerosol generating matrix 10. The tube body of the heating tube can be heated by depositing a heating circuit, or it can be heated by providing a heating film on the tube body. The heating element 30 can also heat the aerosol generating matrix 10 by electromagnetic heating. The heating element 30 can be made of magnetic induction material to generate heat in response to an electromagnetic field.

[0049] Among them, a first mounting cavity and a second mounting cavity can be set in the shell 21. The first mounting cavity and the second mounting cavity can be formed by the shell 21, or can be formed by parts arranged inside the shell 21. For example, in the embodiment of Figure 5, the aerosol generating device also includes a mounting bracket 60. The mounting bracket 60 can divide the space in the shell 21 into a first mounting cavity and a second mounting cavity, wherein the first mounting cavity is formed on one side of the mounting bracket 60, and the second mounting cavity is formed on the other side of the mounting bracket 60. The bracket 22 is arranged in the first mounting cavity, and the aerosol generating device also includes electronic components, which are arranged in the second mounting cavity. Among them, the electronic components can be devices such as power supplies and circuit boards. Therefore, the mounting bracket 60 can be used to assemble electronic components, and can also separate the electronic components and the bracket 22 into two relatively independent spaces to prevent the bracket 22 from leaking liquid to the electronic components.

[0050] As shown in Figure 2, the microphone 40, serving as an airflow sensor, can be disposed outside the accommodating cavity 221. One end of the sensing channel 222 communicates with the end of the accommodating cavity 221 remote from the opening 2211, and the other end of the sensing channel 222 can be connected to the microphone 40. Specifically, the sensing channel 222 extends to the sensing surface of the microphone 40. Specifically, in one embodiment, when the aerosol-generating substrate 10 is secured within the accommodating cavity 221, the sensing channel 222 communicates with the bottom end surface of the substrate segment of the aerosol-generating substrate 10. This ensures that when a user inhales the aerosol-generating substrate 10, the inhalation segment, the airway segment, the substrate segment, and a portion of the sensing channel 222 are in communication.

[0051] The elastic film 50 is disposed within the sensing channel 222 and is connected to the inner wall of the sensing channel 222, thereby dividing the sensing channel 222 into two disconnected cavities located on either side of the elastic film 50. In one embodiment, the elastic film 50 may be substantially perpendicular to the airflow direction of the sensing channel 222.

[0052] The elastic film 50 is used to prevent airflow and liquid from passing through, and the elastic film 50 is spaced apart from the microphone 40. The elastic film 50, the inner wall of the sensing channel 222, and the microphone 40 together form a sealed cavity. The elastic film 50 is used to deform when the air pressure in the sensing channel 222 on the side of the elastic film 50 close to the accommodating cavity 221 changes, thereby changing the air pressure in the sealed cavity.

[0053] When a user takes a puff, the air pressure in the sensing channel 222 on the side of the elastic film 50 near the accommodating chamber 221 generates a negative pressure. Under this negative pressure, the elastic film 50 bulges upward (as shown in Figure 2). Due to the deformation of the elastic film 50, the volume of the sealed chamber increases, and the air pressure decreases. This drop in air pressure in the sealed chamber is sensed by the microphone 40, which generates a feedback signal. The controller then counts the number of puffs taken by the user based on this feedback signal.

[0054] When the liquid in the sensing channel 222 on the side of the elastic film 50 away from the microphone 40 flows from the accommodating cavity 221 along the sensing channel 222 to the elastic film 50, the liquid is blocked by the elastic film 50 and cannot flow into the sealed cavity, thereby preventing it from contacting the microphone 40. This effectively prevents the liquid in the sensing channel 222 from flowing into the microphone 40 and damaging it, thereby preventing the aerosol generating device from failing in its puff counting function.

[0055] In one embodiment, the elastic film 50 is configured as a silicone film, a polyethylene film, a rubber film, or a polyurethane film. The material of the elastic film 50 must not only have a certain degree of elasticity but also be impervious to airflow and liquid. The material of the elastic film 50 is not limited to the above materials and may also be other materials that meet the above requirements.

[0056] In one embodiment, the thickness of the elastic film 50 is 0.1 mm to 0.6 mm. This suitable thickness allows the elastic film 50 to have a strong deformability and be less prone to rupture. As shown in Figures 8 and 9, in one embodiment, the cross-sectional shape of the elastic film 50 includes an arch (Figure 8) or a wavy shape (Figure 9). An arch is a shape in which the center is convex relative to the edges. The cross-sectional shape described in this embodiment is parallel to the central axis of the elastic film 50, which extends along the thickness of the elastic film 50. When the elastic film 50 is generally arched or wavy, the elastic film 50 has a stronger deformability than a planar elastic film 50 and is more easily deformed under negative pressure, thereby ensuring the reliability of the microphone's mouth count.

[0057] In one embodiment, as shown in Figures 2-4, the aerosol-generating device further includes an elastic member 70, which may be made of, for example, silicone. The housing assembly 20 includes a bracket 22, and the sensing channel 222 includes a first channel 2221 and a second channel 2222. The bracket 22 defines a receiving chamber 221 and the first channel 2221. The first channel 2221 communicates with the side of the receiving chamber 221 away from the opening 2211. The elastic member 70 defines a second channel 2222, which connects the microphone 40 to the first channel 2221.

[0058] The elastic film 50 is disposed within the first channel 2221 and / or within the second channel 2222. The accommodating cavity 221 and the microphone 40 are located on either side of the elastic film 50. The elastic film 50 can be disposed solely within the bracket 22, or, as shown in FIG14 , solely within the elastic member 70, or both within the bracket 22 and the elastic member 70. An example of the elastic film 50 being disposed within both the bracket 22 and the elastic member 70 can be seen in FIG15 . The elastic member 70 is disposed within the first channel 2221, and the elastic film 50 is disposed within the elastic member 70. Thus, the elastic film 50 is also disposed within the first channel 2221. By disposing the elastic member 70, the end of the second channel 2222 within the elastic member 70 that is distal to the accommodating cavity 221 can be used to form a sealed cavity, ensuring the airtightness of the sealed cavity. This ensures that the air pressure within the sealed cavity is only affected by the deformation of the elastic film 50. In addition, in one embodiment, the elastic member 70 is sealedly connected to the bracket 22, so the elastic member 70 can also serve as a seal to seal the gap between the bracket 22 and the second mounting cavity to prevent liquid generated in the bracket 22 from flowing out of the gap onto the electronic components in the second mounting cavity.

[0059] Preferably, the elastic film 50 is disposed within the second channel 2222, connected to the inner wall of the second channel 2222, and integrally formed with the elastic member 70. Specifically, the elastic film 50 may be an elastic structure that is part of the elastic member 70. The elastic film 50 may be thinner than the rest of the elastic member 70, allowing the elastic film 50 to elastically deform relative to the rest of the elastic member 70. The elastic film 50, the inner wall of the second channel 2222, and the microphone 40 together form a sealed cavity. The elastic film 50 and the elastic member 70 may be made of the same material and integrally formed to reduce manufacturing steps and ensure the sealing of the sealed cavity.

[0060] In one embodiment, as shown in Figures 4, 8, and 10, the elastic member 70 includes a sealing portion 71 and an assembly portion 72, which are connected to each other. The sealing portion 71 is connected to the side of the assembly portion 72 near the opening 2211. In one embodiment, as shown in Figures 5 and 8, the sealing portion 71 is an annular structure. The sealing portion 71 is arranged around the outer periphery of the side wall of the bracket 22 and is sealed with the outer side wall of the bracket 22 through an interference fit. The interference fit can be achieved by providing a plurality of annular protrusions on the sealing portion 71. In other words, the sealing portion 71 can be sealed with the bracket 22 from the outside. The assembly portion 72 abuts against the end of the bracket 22 away from the opening 2211, and a second channel 2222 is formed in the assembly portion 72. Generally, the assembly portion 72 and the sealing portion 71 can form a groove-shaped space, and the end of the bracket 22 near the elastic member 70 is arranged in the groove-shaped space.

[0061] The elastic film 50 is installed within the second passage 2222. The side of the elastic film 50 facing the accommodating cavity 221, the assembly portion 72, and the end of the bracket 22 facing away from the opening 2211 cooperate to form a sealed cavity. This sealed cavity does not mean completely disconnected from the outside world, but rather relatively sealed. For example, the sealed cavity can communicate with the air intake passage or be used to collect condensate. The side of the elastic film 50 facing away from the accommodating cavity 221, the assembly portion 72, and the microphone 40 form a sealed cavity. This sealed cavity is absolutely sealed, and the internal air pressure is changed only by the deformation of the elastic film 50.

[0062] In one embodiment, as shown in Figures 4 and 10, the elastic member 70 further includes a mounting portion 73, which is connected to the assembly portion 72. The mounting portion 73 has a mounting groove 731 therein, and the microphone 40 is disposed in the mounting groove 731 and has an interference fit therewith. The second channel 2222 connects the mounting groove 731 and the first channel 2221. As shown in Figure 4, the mounting portion 73 can be connected to the end face of the assembly portion 72 away from the sealing portion 71. In the embodiment of Figure 4, the longitudinal space of the aerosol generating device is effectively utilized, saving the lateral space of the aerosol generating device. Alternatively, as shown in Figure 10, the mounting portion 73 can be connected to the side wall of the assembly portion 72. In the embodiment of Figure 10, the mounting portion 73 is connected to the side wall of the assembly portion 72, which can effectively utilize the lateral space of the aerosol generating device and save the longitudinal space of the aerosol generating device. The location of the mounting portion 73 may need to be reasonably arranged.

[0063] In one embodiment, as shown in Figures 11-15 , the microphone 40 includes a microphone body 41 and a microphone protector 42. The microphone protector 42 is provided with an installation space 421 and a mounting hole 422. The microphone body 41 is disposed within the installation space 421, and the mounting hole 422 connects the second channel 2222 with the microphone body 41. The microphone protector 42 can be, for example, silicone, while the microphone body 41 is an electronic component. The provision of the microphone protector 42 allows for an interference fit between the microphone protector 42 and the elastic member 70, securely securing the microphone body 41 within the elastic member 70 and preventing the microphone body 41 from falling out. Of course, in other embodiments, the microphone body 41 can also be directly mounted within the elastic member 70, reducing the number of parts, simplifying assembly steps, and improving assembly efficiency.

[0064] In one embodiment, as shown in Figure 15 , the sealing portion 71 is disposed within the first channel 2221 of the bracket 22 and is sealed against the inner wall of the first channel 2221. The mounting portion 72 abuts against the end of the bracket 22 distal from the opening 2211. In other words, the sealing portion 71 can be sealed against the bracket 22 from within. In some embodiments, as shown in Figure 15 , at least a portion of the microphone 40 is disposed within the bracket 22, with the second channel 2222 formed within the sealing portion 71. This arrangement effectively utilizes the internal space of the bracket 22, eliminating the need for the mounting portion 73 on the elastic member 70, and ensuring that the microphone 40 does not occupy excessive space outside the bracket 22. In some embodiments, the microphone 40 can also be disposed outside the bracket 22, with the mounting portion 73 provided on the elastic member 70 to secure the microphone 40. In this embodiment, the second channel 2222 is formed within the sealing portion 71 and the mounting portion 72.

[0065] In one embodiment, as shown in Figures 5 and 11-15, an air inlet passage 225 is provided within the bracket 22. The air inlet passage 225 extends from a side proximal to the opening 2211 to a side distal to the opening 2211. As shown in Figures 13-15, in one embodiment, one end of the air inlet passage 225 communicates with the exterior of the housing assembly 20, and the other end communicates with the accommodating cavity 221 via a first passage 2221. In other words, the air inlet passage 225 communicates directly with the first passage 2221. Alternatively, as shown in Figures 5, 11, and 12, one end of the air inlet passage 225 communicates with the exterior of the housing assembly 20, and the other end communicates with the accommodating cavity 221 sequentially via a second passage 2222 and a first passage 2221. In other words, the air inlet passage 225 does not communicate directly with the first passage 2221. Instead, the airflow within the air inlet passage 225 flows through the second passage 2222 before reaching the first passage 2221.

[0066] Furthermore, as shown in Figures 5 and 11-15, the bracket 22 includes a tube assembly 223 and a base 224. The tube assembly 223 defines a receiving cavity 221. The base 224 is sealed to the end of the tube assembly 223 away from the opening 2211. One end of the heating element 30 abuts the end of the tube assembly 223 near the opening 2211, and the other end of the heating element 30 abuts the base 224. An air inlet passage 225 is disposed around the periphery of the receiving cavity 221. The air inlet passage 225 can be formed as follows: as shown in Figures 5, 7, and 11-14, the tube assembly 223 includes an inner tube 2231 and an outer tube 2232. The outer tube 2232 is sleeved around the periphery of the inner tube 2231, forming the air inlet passage 225 between the outer tube 2232 and the inner tube 2231. The inner tube 2231 defines the receiving cavity 221. The inner tube 2231 and the outer tube 2232 can be detachably connected or integrally formed. In this manner, the heat of the heating element 30 needs to pass through two walls (inner tube 2231 and outer tube 2232) to be transferred to the outside of the bracket 22, which can prevent the aerosol generating device from overheating. Alternatively, the air inlet channel 225 can also be formed in the following manner: as shown in FIG15 , the tube body assembly 223 and the heating element 30 cooperate to form the air inlet channel 225. In this manner, the heat of the heating element 30 can directly heat the airflow in the air inlet channel 225, which can preheat the airflow and improve energy utilization. Among them, the first channel 2221 can be formed in the following manner: as shown in FIG15 , the tube body assembly 223 and the base 224 cooperate to form the first channel 2221, or the first channel 2221 can also be formed in the following manner: as shown in FIG14 , the base 224 forms the first channel 2221.

[0067] In one embodiment, as shown in FIG5 , the tube assembly 223 can be detachably connected to the mounting bracket 60 . For example, a first clamping portion is provided on the outer periphery of the outer tube 2232 , and the mounting bracket 60 has a second clamping portion, and the first clamping portion and the second clamping portion are clamped together. This can strengthen the fixation of the bracket 22 .

[0068] In one embodiment, as shown in FIG5 , the aerosol-generating device further includes a sealing member 80, which is assembled to the end of the bracket 22 proximal to the opening 2211. The sealing member 80 is sealedly connected to the end of the bracket 22 proximal to the opening 2211. The sealing member 80 may be made, for example, of silicone. An air-guiding cavity 81 and an insertion hole 82 are provided within the sealing member 80. The insertion hole 82 communicates with the accommodating cavity 221 through the opening 2211. When the aerosol-generating substrate 10 is inserted into the accommodating cavity 221, an air-intake gap is formed between the inner wall of the insertion hole 82 and the aerosol-generating substrate 10. The air-guiding cavity 81 communicates with the air-intake passage 225 and the air-intake gap.

[0069] Airflow from the outside passes through the air intake gap and the air guide cavity 81 in sequence and enters the air intake channel 225. The gas in the air intake channel 225 can directly enter the first channel 2221 and then enter the aerosol-generating substrate 10 in the accommodating cavity 221. Alternatively, the gas in the air intake channel 225 can enter the first channel 2221 through the second channel 2222 and then enter the aerosol-generating substrate 10 in the accommodating cavity 221. Because the second channel 2222 is connected to the first channel 2221, negative pressure is generated when airflow passes through the first channel 2221, causing the elastic film 50 to deform, thereby changing the air pressure in the sealed cavity where the microphone 40 is located, allowing the microphone 40 to sense the change in air pressure.

[0070] The setting of the seal 80 can prevent the liquid flowing out of the top gap of the bracket 22 from flowing into the electronic components. The liquid flowing out of the top gap of the bracket 22 can be blocked by the seal 80, and the air guide cavity 81 and the socket 82 of the seal are connected. The liquid flowing into the seal 80 can flow along the air guide cavity 82 to the socket 82 and then flow into the accommodating cavity 41, and be heated into an aerosol by the heating element 30, so that the liquid overflowing from the bracket 22 can be utilized.

[0071] To minimize the amount of heat transferred from the heating element 30 to the elastic element 70 and the sealing element 80 to prevent failure of the elastic element 70 and the sealing element 80, the bracket 22 can be made of a material with low thermal conductivity. For example, the inner tube 2231 and the base 224 can be made of polyetheretherketone (PEEK), and the outer tube 2232 can be made of at least one of PEEK, polyetherketoneketone (PAEK), polyphenylene sulfone resins (PPSU), nylon, polytetrafluoroethylene (PTFE), polyvinylidene difluoride (PVDF), polysulfone (PSU), liquid crystal polymer (LCP), fluororubber (FKM), polyimide (PI), and thermoplastic polyimide (TPI). Experimental measurements show that the operating temperature of the heating element 30 inside the bracket 22 can reach 300 degrees Celsius, and the temperature of the sealing ring inside the bracket 22 can reach 200 degrees Celsius. However, since the bracket 22 is made of a material with low thermal conductivity, the temperature at the elastic member 70 and the sealing member 80 is only about 100 degrees Celsius. This can greatly reduce the aging speed of the elastic member 70 and the sealing member 80, thereby preventing leakage.

[0072] In one embodiment, as shown in Figures 5 and 11, the sealing member 80 may include a clamping portion 83 for clamping the aerosol-generating substrate 10. Alternatively, the aerosol-generating device may further include a clamping member 90, which is disposed on a side of the sealing member 80 away from the bracket 22 and is configured to clamp the aerosol-generating substrate 10. The provision of the clamping portion 83 and the clamping member 90 prevents the aerosol-generating substrate 10 from shaking during inhalation, thereby improving the stability of the installation of the aerosol-generating substrate 10. When the sealing member 80 includes the clamping portion 83, the additional clamping member 90 is not required, thereby reducing the number of parts and improving assembly efficiency.

[0073] In one embodiment, as shown in FIG2 , the bracket 22 , the elastic member 70 , and the microphone 40 are all disposed within the housing 21 . The aerosol generating device further comprises a fixing member 100 , which is fixed to the housing 21 . The fixing member 100 is fixedly connected to the microphone 40 by snapping or pressing, thereby preventing the microphone 40 from falling out of the elastic member 70 .

[0074] The above examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, modifications or substitutions can be made based on the ideas of the present invention.

Claims

1. An aerosol generating device, characterized in that include: A housing assembly, wherein a housing cavity and a sensing channel are provided in the housing assembly, wherein the housing cavity is used to accommodate an aerosol-generating substrate, and one end of the housing cavity has an opening, wherein the opening is used for allowing the aerosol-generating substrate to be inserted into and removed from the housing cavity; a heating element, the heating element being disposed inside the accommodating cavity and being used to heat the aerosol generating substrate to generate aerosol; a microphone, the microphone being disposed outside the accommodating cavity; The sensing channel is in communication with an end of the accommodating cavity away from the opening, and the sensing channel is connected to the microphone; and an elastic film, wherein the elastic film is disposed in the sensing channel and is used to prevent airflow and liquid from passing therethrough, and the elastic film is spaced apart from the microphone. The elastic film, the inner wall of the sensing channel, and the microphone together form a sealed cavity, and the elastic film is used to deform when the air pressure in the sensing channel on a side of the elastic film close to the accommodating cavity changes, thereby changing the air pressure in the sealed cavity.

2. The aerosol generating device according to claim 1, wherein The device further includes an elastic member, the housing assembly includes a bracket, the sensing channel includes a first channel and a second channel, the bracket is provided with the accommodating cavity and the first channel, the first channel is connected to the side of the accommodating cavity away from the opening; the elastic member is provided with a second channel, the second channel connects the microphone and the first channel, the elastic film is provided inside the first channel, and / or the elastic film is provided inside the second channel.

3. The aerosol generating device according to claim 2, characterized in that The elastic film is connected to the inner wall of the second channel, and the elastic film and the elastic member are integrally formed. The elastic film, the inner wall of the second channel and the microphone together form the sealed cavity.

4. The aerosol generating device according to claim 1, wherein: The elastic film is configured as a silicone film, a polyethylene film, a rubber film or a polyurethane film.

5. The aerosol generating device according to claim 1, wherein: The cross-section of the elastic film includes an arch shape or a wave shape, and the cross-section is parallel to the central axis of the elastic film.

6. The aerosol generating device according to claim 2, characterized in that The elastic member includes a sealing portion and an assembly portion that are connected to each other; the sealing portion is arranged around the outer periphery of the side wall of the bracket and is sealed with the outer side wall of the bracket, the assembly portion abuts against the end of the bracket away from the opening, and the second channel is formed in the assembly portion.

7. The aerosol generating device according to claim 6, characterized in that The elastic member further includes a mounting portion connected to the assembly portion, the mounting portion having a mounting groove therein, the microphone head being disposed in the mounting groove and having an interference fit therewith, and the second channel connecting the mounting groove and the first channel; The mounting portion is connected to an end surface of the assembly portion away from the sealing portion, or the mounting portion is connected to a side wall of the assembly portion.

8. The aerosol generating device according to claim 7, characterized in that The microphone includes a microphone body and a microphone protector. The microphone protector is provided with an installation space and a mounting hole. The microphone body is arranged in the installation space. The mounting hole communicates with the second channel and the microphone body.

9. The aerosol generating device according to claim 2, wherein: The elastic member includes a sealing portion and an assembly portion connected to each other; the sealing portion is arranged inside the first channel and is sealed with the inner wall of the first channel, and the assembly portion abuts against an end of the bracket away from the opening; At least part of the microphone is disposed inside the bracket, and the second channel is formed in the sealing portion; or the microphone is disposed outside the bracket, and the second channel is formed in the sealing portion and the assembly portion.

10. The aerosol generating device according to claim 2, wherein: An air intake channel is provided inside the bracket, and the air intake channel extends from a side close to the opening to a side away from the opening; one end of the air intake channel is connected to the outside of the shell assembly, and the other end is connected to the accommodating cavity via the first channel, or the other end is connected to the accommodating cavity via the second channel and the first channel in sequence.

11. The aerosol generating device according to claim 10, characterized in that The bracket includes a tube body assembly and a base, a receiving cavity is provided in the tube body assembly, the base is sealedly connected to the end of the tube body assembly away from the opening, one end of the heating element abuts against the end of the tube body assembly close to the opening, and the other end of the heating element abuts against the base; the air inlet channel is provided on the periphery of the receiving cavity.

12. The aerosol generating device according to claim 11, characterized in that The tube assembly includes an inner tube and an outer tube, wherein the outer tube is sleeved on the outer circumference of the inner tube, the air intake channel is formed between the outer tube and the inner tube, and the accommodating cavity is formed in the inner tube. The inner tube and the outer tube are detachably connected or integrally formed. Alternatively, the tube assembly cooperates with the heating element to form the air intake passage.

13. The aerosol generating device according to claim 11, characterized in that The tube assembly and the base cooperate to form the first channel, or the base forms the first channel.

14. The aerosol generating device according to claim 10, wherein: It also includes a sealing member, which is assembled on one end of the bracket close to the opening, and the sealing member is sealed and connected to the end of the bracket close to the opening; an air guide cavity and a socket are provided in the sealing member, and the socket is connected to the accommodating cavity through the opening; when the aerosol generating matrix is ​​inserted into the accommodating cavity, an air intake gap can be formed between the inner wall of the socket and the aerosol generating matrix, and the air guide cavity is connected to the air intake channel and the air intake gap.

15. The aerosol generating device according to claim 14, characterized in that The sealing member has a clamping portion, which is used to clamp the aerosol generating substrate. Alternatively, the aerosol generating device further includes a clamping member, which is arranged on a side of the sealing member away from the bracket, and is used to clamp the aerosol generating substrate.

16. The aerosol generating device according to claim 2, wherein: The housing assembly further includes an outer shell, the bracket, the elastic member, and the microphone are all disposed within the outer shell, and the aerosol generating device further includes a fixing member fixed to the outer shell, the fixing member being fixedly connected to the microphone by snap-fitting or pressing.

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