Filter and aerosol-generating device

Abstract

The application belongs to the technical field of aerosol generating devices, and discloses a filter and an aerosol generating device. The filter is used in the aerosol generating device and comprises a filter shell and at least two filter core assemblies. The filter shell has a containing cavity, and the filter shell is provided with a suction port and an air inlet which are respectively connected to the containing cavity. The filter core assemblies are at least partially accommodated in the containing cavity, and each filter core assembly has an airflow channel. The airflow channel of each filter core assembly is switchably connected to at least one of the air inlet and the suction port, and the airflow channel of only one filter core assembly is simultaneously connected to the air inlet and the suction port. The filter provided by the application prolongs the effective filtration time and reduces the use cost of the user.

Description

Technical Field

[0001] This invention relates to the field of aerosol generation device technology, and more particularly to a filter and an aerosol generation device. Background Technology

[0002] Traditional cigarettes produce smoke containing large amounts of tar and other harmful substances during combustion, which is detrimental to the health of smokers. Therefore, devices that use low-temperature baking to reduce the generation of aerosols containing tar and other harmful substances are becoming increasingly widely used.

[0003] The aerosol generating device includes a main unit and a filter. The main unit heats a traditional cigarette to generate an aerosol, which is then filtered by the filter before being inhaled by the user. The filter is a consumable; when it can no longer effectively perform its filtration function, it needs to be replaced, resulting in high operating costs for the user. In particular, in related technologies, the effective filtration time of a single filter is extremely limited, necessitating frequent filter replacements and further increasing user costs. Summary of the Invention

[0004] The first objective of this invention is to provide a filter tip that addresses the technical problem of an excessively short effective filtration time.

[0005] To achieve the above objectives, the present invention provides a filter tip for an aerosol generating device, comprising:

[0006] A filter housing having a receiving cavity, the filter housing having a suction port and an air inlet respectively communicating with the receiving cavity;

[0007] At least two filter cartridge assemblies, each filter cartridge assembly being at least partially housed within the receiving cavity, and each filter cartridge assembly having an airflow passage;

[0008] Each of the filter elements has an airflow channel that is switchably connected to at least one of the air inlet and the suction port, and only one filter element has an airflow channel that is simultaneously connected to both the air inlet and the suction port.

[0009] A second objective of the present invention is to provide an aerosol generating apparatus, comprising a main unit and the aforementioned filter, wherein the filter is detachably connected to the main unit, and the main unit is used to heat an aerosol generating matrix to generate an aerosol.

[0010] The filter and aerosol generating device provided by this invention, by setting at least two filter elements, allows for continued aerosol filtration when the filtration function of one filter element decreases and fails to meet filtration requirements. This extends the effective filtration time compared to existing filters with only one filter element. Furthermore, by switchably connecting the airflow channel of each filter element to at least one of the inlet and suction ports, ensuring that only one filter element's airflow channel is simultaneously connected to both the inlet and suction port, it is guaranteed that aerosols are filtered through only one filter element during use. Moreover, when the filtration function of that filter element decreases and fails to meet filtration requirements, the airflow channel of another filter element can be switched to simultaneously connect to both the inlet and suction port for filtration. Therefore, the filter provided by this invention extends the effective filtration time, avoids frequent filter replacements, and reduces user costs. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of a filter tip provided in one embodiment of the present invention;

[0013] Figure 2 yes Figure 1 Exploded view of the filter tip in the image;

[0014] Figure 3 yes Figure 1 A cross-sectional view of the filter tip in the middle when the suction port is connected to the outlet of the airflow channel of a filter element assembly;

[0015] Figure 4 yes Figure 1 A cross-sectional view of the filter tip in the middle when the suction port connects to the outlet of the airflow channel of another filter element;

[0016] Figure 5 This is a schematic diagram of the structure of the second housing provided in an embodiment of the present invention;

[0017] Figure 6 This is an exploded view of the filter element assembly provided in an embodiment of the present invention;

[0018] Figure 7 yes Figure 6 A schematic diagram of the filter element assembly in the diagram;

[0019] Figure 8This is a schematic diagram of the structure of a filter tip provided in another embodiment of the present invention;

[0020] Figure 9 yes Figure 8 Exploded view of the filter tip in the image;

[0021] Figure 10 yes Figure 8 A cross-sectional view of the filter tip in the image;

[0022] Figure 11 This is a schematic diagram of the structure of an adjustment component provided in another embodiment of the present invention;

[0023] Figure 12 This is a schematic diagram of the structure of a filter tip provided in another embodiment of the present invention;

[0024] Figure 13 yes Figure 12 Exploded view of the filter tip in the image;

[0025] Figure 14 yes Figure 12 A cross-sectional view of the filter tip in the image;

[0026] Figure 15 This is a schematic diagram of the structure of an adjustment component provided in another embodiment of the present invention;

[0027] Figure 16 This is a schematic diagram of the aerosol generating device provided in an embodiment of the present invention.

[0028] Explanation of icon numbers:

[0029] 1000, Aerosol generating device; 100, Filter nozzle; 10, Filter housing; 11, Receptacle; 12, Suction port; 13, Air inlet; 14, First housing; 141, Perforation; 142, Sliding groove; 15, Second housing; 151, Receptacle groove; 1511, Receptacle sub-groove; 1512, Support; 20, Filter element assembly; 20a, First filter element assembly; 20b, Second filter element assembly; 21, Particle carrying container; 211, First support... 212. Second bearing chamber; 213. Third bearing chamber; 214. Inlet; 215. Airflow channel; 216. Air intake channel; 22. Sealing cover; 221. Outlet; 30. Adjustment component; 31. Cover part; 311. Vent hole; 311a. First vent hole; 311b. Second vent hole; 32. Rotating part; 33. Actuating part; 34. Sealing element; 200. Filter particles; 300. Seasoning particles; 400. Main unit.

[0030] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0033] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0034] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention. In the figure, the arrows indicate the flow path of aerosol through one of the filter element components in the filter nozzle.

[0035] Currently, aerosol generating devices are widely used to reduce the generation of harmful substances such as tar. However, the filters in these devices are consumables and need to be replaced after a period of use because they can no longer provide effective filtration. In related technologies, the effective filtration time of a single filter is extremely limited, accelerating filter replacement and further increasing user costs.

[0036] In view of this, this application provides a filter and an aerosol generating device, which extends the effective filtration time of the filter and reduces the user's operating costs. The aerosol generating device includes a filter, through which the generated aerosol is filtered before being inhaled by the user.

[0037] like Figures 1 to 3 , Figure 7As shown, a filter 100 for an aerosol generating device includes a filter housing 10 and at least two filter element assemblies 20. The filter housing 10 has a receiving cavity 11, a suction port 12, and an air inlet 13, with the suction port 12 and the air inlet 13 respectively connected to the receiving cavity 11. The filter element assemblies 20 are at least partially housed within the receiving cavity 11, and each filter element assembly 20 has an airflow channel 215. The airflow channel 215 of each filter element assembly 20 is switchably connected to at least one of the air inlet 13 and the suction port 12, and only one filter element assembly 20 has its airflow channel 215 simultaneously connected to both the air inlet 13 and the suction port 12. In a specific application, the aerosol enters a filter assembly 20 located in the accommodating cavity 11 through the air inlet 13. After being filtered by the filter assembly 20, it is inhaled by the user through the suction port 12. At least the inlet 214 and outlet 221 of the airflow channel 215 of each filter assembly 20 are contained in the accommodating cavity 11. Figure 3 The arrows in the diagram illustrate the flow path of the aerosol within one of the filter elements 20. Specifically, the aerosol sequentially enters the airflow channel 215 of the filter element 20 through the air inlet 13 and the inlet 214, and then flows through the outlet 221 and suction port 12 of the airflow channel 215 for inhalation by the user. As the aerosol passes through the airflow channel 215, the filter element 20 continuously exchanges heat with it. Simultaneously, the filter element 20 intercepts large particles in the aerosol, achieving cooling and filtration of the aerosol and improving the user experience.

[0038] In use, the airflow channel 215 of one filter element assembly 20 is connected to both the air inlet 13 and the suction port 12. The aerosol is then filtered by the filter element assembly 20 and inhaled by the user. When the filtration function of the filter element assembly 20 decreases after inhalation for a period of time and can no longer meet the filtration requirements, the filter element assembly 20 through which the aerosol flows can be switched to another filter element assembly 20, so that its airflow channel 215 is connected to both the air inlet 13 and the suction port 12. The switched filter element assembly 20 is then used to filter the aerosol. For example, the filter tip 100 contains n filter elements 20. Initially, only the airflow channel 215 of the first filter element 20 is simultaneously connected to the air inlet 13 and the suction port 12, and the aerosol is only inhaled after being filtered by the first filter element 20. When the filtration function of the first filter element 20 decreases, the second filter element 20 is switched on, so that the airflow channel 215 of the second filter element 20 is simultaneously connected to the air inlet 13 and the suction port 12. At this time, the aerosol is inhaled by the user after being filtered by the second filter element 20. This process continues until all n filter elements 20 are used.

[0039] By adopting the above technical solution, a filter housing 10 is provided to house the filter element assembly 20; the filter element assembly 20 is provided to filter the flowing aerosol to meet the user's inhalation requirements; by setting the number of filter element assemblies 20 to at least two, when the filtration function of one filter element assembly 20 decreases and cannot meet the filtration requirements, other filter element assemblies 20 can continue to be used for filtration, extending the effective filtration time of the filter nozzle 100; by switching the airflow channel 215 of each filter element assembly 20 to at least one of the air inlet 13 and the suction port 12, and ensuring that the airflow channel 215 of one filter element assembly 20 is simultaneously connected to the air inlet 13 and the suction port 12, it is ensured that when using the filter nozzle 100, the aerosol is filtered through only one filter element assembly 20, and when the filtration function of that filter element assembly 20 decreases and cannot meet the filtration requirements, the airflow channel 215 of another filter element assembly 20 can be switched to be simultaneously connected to the air inlet 13 and the suction port 12, thereby using another filter element assembly 20 for filtration. Therefore, the filter 100 provided in this embodiment of the invention extends the effective filtration time, avoids frequent replacement of the filter 100, and reduces the user's operating costs.

[0040] In one implementation, the air inlet 13 is connected to the inlet 214 of the airflow passage 215 of all filter element assemblies 20, and the suction port 12 can be switched to be connected to the outlet 221 of the airflow passage 215 of any one filter element assembly 20. Thus, by configuring the suction port 12 to be connected only to the outlet 221 of the airflow passage 215 of one filter element assembly 20, and not simultaneously connected to the outlets 221 of the airflow passage 215 of other filter element assemblies 20, only one filter element assembly 20's airflow passage 215 is simultaneously connected to both the air inlet 13 and the suction port 12. Furthermore, when it is necessary to switch the airflow passage 215 of other filter element assemblies 20 to be simultaneously connected to both the air inlet 13 and the suction port 12, this can be achieved by switching the suction port 12 to be connected to the outlet 221 of the airflow passage 215 of other filter element assemblies 20.

[0041] As one implementation method, refer to Figures 1 to 4 As shown, the filter housing 10 includes a first housing 14 and a second housing 15 movably connected; one of the first housing 14 and the second housing 15 is provided with a suction port 12, and the other of the first housing 14 and the second housing 15 is provided with an air inlet 13. The first housing 14 and the second housing 15 enclose a receiving cavity 11. In this embodiment, the first housing 14 is provided with a suction port 12, and the second housing 15 is provided with an air inlet 13. The first housing 14 is located above the second housing 15, and the second housing 15 is also used to connect to a main unit independent of the filter nozzle 100. It can be understood that in other embodiments, the first housing 14 is provided with an air inlet 13, the second housing 15 is provided with a suction port 12, and the first housing 14 is connected to the main unit. Here, "up and down" refers to the vertical direction when the aerosol generating device is placed vertically.

[0042] In one implementation, the first housing 14 and the second housing 15 are movable relative to each other, so that the suction port 12 can be switched to be connected to the outlet 221 of the airflow channel 215 of any filter element assembly 20. In specific applications, the first housing 14 moves relative to the second housing 15, causing the orientation of the suction port 12 located on the first housing 14 within the filter housing 10 to change, thereby switching the connection between the outlet 221 of the airflow channel 215 of other filter element assemblies and the suction port 12. For example, before the first housing 14 moves relative to the second housing 15, refer to... Figure 3 As shown, the suction port 12 is located on the right side of the filter housing 10, and the suction port 12 is connected to the outlet 221 of the airflow channel 215 of a filter element assembly 20 located on the right side of the filter housing 10; when the first housing 14 moves relative to the second housing 15, refer to Figure 4 As shown, the suction port 12 is located on the left side of the second housing 15, and the suction port 12 is connected to the outlet 221 of the airflow channel 215 of another filter element assembly 20 located on the left side of the filter housing 10. By configuring the filter housing 10 to be movably connected to the first housing 14 and the second housing 15, when it is necessary to switch to use different filter element assemblies 20, it is only necessary to move the first housing 14 relative to the second housing 15 to connect the suction port to the outlet 221 of the airflow channel 215 of the different filter element assembly 20, which is convenient to operate.

[0043] As one implementation method, such as Figure 3 and Figure 4 As shown, the first housing 14 and the second housing 15 are detachably connected, and they can be switched between a first connection state and a second connection state; wherein, the first connection state refers to the connection state of the first housing 14 and the second housing 15 before any switching action (e.g., Figure 3 As shown), the second connection state refers to the connection state of the first housing 14 and the second housing 15 after any switching action (e.g., Figure 4 (As shown). In the first connection state, the suction port 12 is connected to the outlet 221 of the airflow channel 215 of one of the filter element components 20; in the second connection state, the suction port 12 is connected to the outlet 221 of the airflow channel 215 of the other filter element component 20. In specific applications, in the first connection state, the first housing 14 and the second housing 15 are disassembled, rotated relative to each other by a preset angle, and then reconnected, so that the suction port 12 is connected to the outlet 221 of the airflow channel 215 of the other filter element component 20, thereby switching the first housing 14 and the second housing 15 from the first connection state to the second connection state. This switching method is simple, convenient, and quick to operate.

[0044] In one embodiment, the first housing 14 and the second housing 15 are rotatably connected, and can be switched between a first connection state and a second connection state. In the first connection state, the suction port 12 communicates with the outlet 221 of the airflow channel 215 of one of the filter elements 20. In the second connection state, the suction port 12 communicates with the outlet 221 of the airflow channel 215 of the other filter element 20. Specifically, in the first connection state, rotating the first housing 14 and the second housing 15 relative to each other by a preset angle allows the suction port 12 to communicate with the outlet 221 of the airflow channel 215 of the other filter element 20, thus switching the first housing 14 and the second housing 15 to the second connection state. This switching method is simple, convenient, and quick to operate.

[0045] The first housing 14 and the second housing 15 are rotatably connected. In specific applications, the first housing 14 and the second housing 15 are rotatably connected through a rotating shaft. In other applications, other connection methods can also be used, which will not be listed here.

[0046] In one implementation, the outlets 221 of the airflow channels 215 of all filter element assemblies 20 are arranged along the rotation path of the suction port 12. Thus, when the suction port 12 rotates with the first housing 14, it can selectively connect to the outlet 221 of the airflow channel 215 of any filter element assembly 20. Figures 2 to 4 As shown, in this embodiment, there are two filter element assemblies 20, arranged side-by-side and symmetrically. The first housing 14 and the second housing 15 are disassembled and rotated 180° relative to each other before being reconnected, thus switching the connection state between the first housing 14 and the second housing 15 from a first connection state to a second connection state. Of course, in specific applications, as an alternative implementation, the number and arrangement of the filter element assemblies 20 are not limited to this. For example, there are four filter element assemblies 20, arranged in a square. The first housing 14 and the second housing 15 are disassembled and rotated 90° relative to each other before being reconnected, which can switch the connection state between the first housing 14 and the second housing 15 from a first connection state to a second connection state.

[0047] As one implementation method, refer to Figures 8 to 10 As shown, the filter nozzle 100 also includes an adjustment component 30, which is partially located inside the filter housing 10 and is used to allow the suction port 12 to be switched to be connected to the outlet 221 of the airflow channel 215 of any filter element assembly 20. By setting the adjustment component 30 to switch the connection between the suction port 12 and the outlet 221 of the airflow channel 215 of different filter element assemblies 20, the operation is convenient and quick.

[0048] As one implementation method, refer to Figures 9 to 11As shown, the filter housing 10 is provided with a through hole 141 communicating with the receiving cavity 11; the adjusting assembly 30 includes a cover part 31 and a rotating part 32; one end of the rotating part 32 is connected to the cover part 31, and the other end extends out of the filter housing 10 through the through hole 141; the cover part 31 is provided with a vent hole 311, which is used to connect the suction port 12 with the outlet 221 of the airflow channel 215 of one of the filter element assemblies 20, and the cover part 31 is used to block the outlet 221 of the airflow channel 215 of other filter element assemblies 20; the rotating part 32 can rotate to drive the cover part 31 to rotate, so that the vent hole 311 rotates, thereby allowing the suction port 12 to be switched to connect with the outlet 221 of the airflow channel 215 of any filter element assembly 20. In a specific application, the perforation 141 is provided on the first housing 14, and the rotating part 32 extends through the perforation 141 to the outside of the first housing 14. The user can rotate the rotating part 32 located on the outside of the first housing 14 to rotate the vent 311 so that the suction port 12 can switch to communicate with the outlet 221 of the airflow channel 215 of different filter element assemblies 20 through the vent 311.

[0049] As one implementation method, such as Figure 9 and Figure 10 As shown, the outlets 221 of the airflow channels 215 of all filter element assemblies 20 are arranged along the rotation path of the vent holes 311. In this way, when the cover part 31 rotates, the vent holes 311 can be connected to the outlets 221 of the airflow channels 215 of any filter element assembly 20.

[0050] For example, refer to Figures 9 to 11As shown, there are two vent holes 311, which are arranged at 90° intervals around the rotation axis M of the cover part 31; there are two filter element assemblies 20, which are arranged symmetrically side by side, and the outlet 221 of the airflow channel 215 of the two filter element assemblies 20 is connected through the rotation axis M of the cover part 31. For ease of description, the two vents 311 are defined as the first vent 311a and the second vent 311b, respectively, and the two filter element assemblies 20 are defined as the first filter element assembly 20a and the second filter element assembly 20b, respectively. When the first vent 311a is rotated to connect with the outlet 221 of the airflow channel 215 of the first filter element assembly 20a, the second vent 311b is located between the outlet 221 of the airflow channel 215 of the first filter element assembly 20a and the outlet 221 of the airflow channel 215 of the second filter element assembly 20b, and is connected to the outlet 221 of the airflow channel 215 of the first filter element assembly 20a and the outlet 221 of the airflow channel 215 of the second filter element assembly 20b. The outlets 221 of the airflow channels 215 are not connected. When the filtration function of the first filter element assembly 20a decreases and fails to meet the filtration requirements, the cover part 31 is rotated 90° to rotate the second vent 311b to connect with the outlet 221 of the airflow channel 215 of the second filter element assembly 20b. At this time, the first vent 311a is located between the outlet 221 of the airflow channel 215 of the first filter element assembly 20a and the outlet 221 of the airflow channel 215 of the second filter element assembly 20b, and is not connected to either the outlet 221 of the airflow channel 215 of the first filter element assembly 20a or the outlet 221 of the airflow channel 215 of the second filter element assembly 20b. With this configuration, the user can switch between the suction port 12 and the outlets 221 of the airflow channels 215 of the two filter elements 20 by rotating the rotating part 32 90°. It is understood that in other embodiments, the number of vent holes 311 is one, the number of filter element assemblies 20 is two, the two filter element assemblies 20 are arranged symmetrically side by side, and the outlets 221 of the airflow channels 215 of the two filter element assemblies 20 are connected through the rotation axis M of the cover part 31. In this arrangement, the user can switch between the suction port 12 and the outlets 221 of the airflow channels 215 of the two filter element assemblies 20 by rotating the rotating part 32 by 180°.

[0051] In one embodiment, the adjustment assembly 30 includes a cover portion 31, a toggle portion 33, and a sealing member 34. (See reference...) Figures 12 to 15As shown, the filter housing 10 is provided with a sliding groove 142 that communicates with the receiving cavity 11; the adjusting assembly 30 includes a cover part 31, a toggle part 33 and a sealing member 34; one end of the toggle part 33 is connected to the cover part 31, and the other end extends out of the filter housing 10 through the sliding groove 142; the sealing member 34 is sleeved around the toggle part 33 and sandwiched between the filter housing 10 and the cover part 31 to seal the sliding groove 142; the cover part 31 is provided with a vent hole 311, which is used to connect the suction port 12 with the outlet 221 of one of the airflow channels 215, and the cover part 31 is used to block the outlet 221 of other airflow channels 215; the toggle part 33 can slide along the sliding groove 142 to drive the cover part 31 to slide, so that the vent hole 311 slides, thereby allowing the suction port 12 to be switched to connect with the outlet 221 of any airflow channel 215 of the filter element assembly 20. In a specific application, the sliding groove 142 is provided on the first housing 14, and the actuating part 33 extends through the sliding groove 142 to the outside of the first housing 14. The user can switch the outlet 221 of the airflow channel 215 of different filter element assemblies 20 to the suction port 12 by actuating the actuating part 33 located on the outside of the first housing 14.

[0052] As one implementation method, such as Figure 14 As shown, the outlets 221 of the airflow channels 215 of all filter element assemblies 20 are arranged along the sliding path of the vent holes 311. In this way, when the vent holes 311 slide with the cover portion 31, they can connect with the outlets 221 of the airflow channels 215 of any filter element assembly 20.

[0053] For example, the sliding groove 142 is elongated, with one vent hole 311 and two filter element assemblies 20 arranged symmetrically side by side. The line connecting the outlets 221 of the airflow channels 215 of the two filter element assemblies 20 is parallel to the extending direction of the sliding groove 142. When it is necessary to switch the connection between the suction port 12 and the outlet 221 of the airflow channel 215 of another filter element assembly 20, the sliding part 33 is driven to slide along the sliding groove 142, thereby causing the cover part 31 to slide, further causing the vent hole 311 to slide. This allows the suction port 12 to switch to connect with the outlet 221 of the airflow channel 215 of different filter element assemblies 20 through the vent hole 311, making the operation simple.

[0054] As one implementation method, refer to Figure 3 , Figure 5 and Figure 7As shown, the side of the filter housing 10 with the air inlet 13 is spaced apart from the side of all filter element assemblies 20 with the inlet 214 of the airflow channel 215, forming an air inlet channel 216 for airflow passage. The air inlet 13 is connected to the inlet 214 of the airflow channel 215 of all filter element assemblies 20 through the air inlet channel 216. In this way, the air inlet 13 is connected to the inlet 214 of the airflow channel 215 of all filter element assemblies 20. In a specific application, the second housing 15 is provided with a receiving groove 151. The first housing 14 is connected to the second housing 15 and covers the receiving groove 151 to form a receiving cavity 11. In this embodiment, the inlet 214 of the airflow channel 215 of the filter element assembly 20 is formed at the bottom of the filter element assembly 20. The second housing 15 has a support portion 1512 protruding from the bottom of the receiving groove 151. When the filter element assembly 20 is placed in the receiving groove 151, the support portion 1512 abuts against the bottom of the filter element assembly 20, so that a gap is formed between the bottom of the filter element assembly 20 and the second housing 15. This gap further forms an air intake channel 216 for airflow to pass through. Of course, in specific applications, as an alternative implementation, the bottom of the filter element assembly 20 may be provided with a support portion 1512. When the filter element assembly 20 is placed in the receiving groove 151, the support portion 1512 abuts against the second housing 15, so that a gap is formed between the bottom of the filter element assembly 20 and the second housing 15. This gap further forms an air intake channel 216 for airflow to pass through.

[0055] like Figure 5 As shown, the receiving slot 151 includes a number of receiving sub-slots 1511 equal to the number of filter element assemblies 20. Each receiving sub-slot 1511 is connected to the air inlet 13. Each receiving sub-slot 1511 contains one filter element assembly 20. The inlet 214 of the airflow channel 215 of all the filter element assemblies 20 in the receiving sub-slots 1511 is connected to the air inlet 13, but only the outlet 221 of the airflow channel 215 of the filter element assembly 20 in one receiving sub-slot 1511 is connected to the suction port 12. With this arrangement, even if air can enter through the inlet 214 of the airflow channel 215 of all the filter element assemblies 20, only the outlet 221 of the airflow channel 215 of one filter element assembly 20 can exit, ensuring that only one filter element assembly 20 filters the aerosol at a time, and the other filter element assemblies 20 are not consumed prematurely.

[0056] In one implementation, the filter element assembly 20 is detachably housed in the receiving cavity 11. That is, the user can remove the filter element assembly 20 from or place it into the receiving sub-slot 1511. This allows for several advantages: firstly, after all filter element assemblies 20 have been used, only the filter element assembly 20 needs to be replaced, without replacing components such as the filter housing 10, saving materials and further reducing user costs; secondly, when the filtration function of one filter element assembly 20 decreases and fails to meet filtration requirements, after disassembling the first housing 14 and the second housing 15, another unused filter element assembly 20 within the filter nozzle 100 can be swapped with it, and then the first housing 14 and the second housing 15 can be reconnected.

[0057] As one implementation method, refer to Figure 3 As shown, the filter element assembly 20 has filter particles 200 on the airflow channel 215 for filtering the flowing aerosol. In specific applications, the filter particles 200 are round, which helps to increase the contact area between the filter particles 200 and the aerosol. The gaps between multiple filter particles 200 allow the aerosol to pass through, ensuring that the airflow channel 215 is not blocked by the filter particles 200. In this embodiment, the filter particles 200 are ceramic particles. Ceramic particles have a porous structure, which can filter large particles and acidic gases in the aerosol, thereby improving the filtration effect of the filter element assembly on the aerosol.

[0058] As one implementation method, refer to Figure 3 , Figure 6 and Figure 7 As shown, the filter element assembly 20 includes a particle carrying container 21 and a sealing cap 22 covering the particle carrying container 21, with filter particles 200 placed inside the particle carrying container 21. Thus, when the filtration function of the filter element assembly 20 decreases and fails to meet filtration requirements, the sealing cap 22 of the particle carrying container 21 can be disassembled and the filter particles 200 can be replaced. By replacing the filter particles 200, the filter element assembly 20 can be reused. In other words, after all filter element assemblies 20 are used up, the user only needs to replace the filter particles 200, without needing to replace the particle carrying container 21 and the sealing cap 22, further reducing user costs. In specific applications, the cavity of the particle carrying container 21 forms an airflow channel 215, with an inlet 214 formed at the bottom of the particle carrying container 215 and an outlet 221 formed on the sealing cap 22.

[0059] As one implementation method, refer to Figure 3As shown, the filter assembly 20 also has flavoring particles 300 on the airflow channel 215 for flavoring the flowing aerosol; the flavoring particles 300 are located downstream of the filter particles 200 along the airflow channel 215. Thus, after the aerosol enters the airflow channel 215, it first passes through the filter particles 200 for filtration, and then through the flavoring particles 300 to adjust the flavor, so that the aerosol flowing to the suction port 12 provides the user with better comfort and improves the user experience. In specific applications, the flavoring particles 300 can be flavoring particles, which are plant fiber particles soaked in flavoring liquid. These particles have a certain adsorption capacity. The flavoring liquid is one or more of propylene glycol, glycerin, and tobacco flavorings. When the aerosol flows through the flavoring particles, it can carry out the aroma to adjust the aerosol and improve its taste.

[0060] In one implementation, both the filter housing 10 and the particle carrier container 21 can be made of transparent material. This allows the user to observe the color change of the filtered particles 200, thus determining whether the filter element assembly 20 needs to be replaced. In specific applications, ceramic particles gradually change from light to dark during use. For example, ceramic particles are initially grayish-white, gradually turning light yellow and then black over time. When the user notices that the ceramic particles have turned black, they can switch to another filter element assembly 20. In this embodiment, the particle carrier container 21 is made of a light-transmitting material, and the filter housing 10 is at least partially light-transmitting, allowing the user to observe the color of the filtered particles 200 through the light-transmitting portions of the filter housing 10 and the particle carrier container 21, facilitating the user's judgment on whether the filter element assembly 20 needs to be replaced.

[0061] As one implementation method, refer to Figure 3 , Figure 6 and Figure 7As shown, the particle carrier container 21 includes a first carrier cavity 211, a second carrier cavity 212, and a third carrier cavity 213 arranged side by side. The first carrier cavity 211 is used to hold filter particles 200, and at least one of the second carrier cavity 212 and the third carrier cavity 213 is used to hold seasoning particles 300. The upper part of the first carrier cavity 211 is connected to the upper part of the second carrier cavity 212, and the lower part of the second carrier cavity 212 is connected to the lower part of the third carrier cavity 213. The first carrier cavity 211, the second carrier cavity 212, and the third carrier cavity 213 form an airflow channel 215. The particle carrier container 21 is provided with at least one first through hole, which is connected to the first carrier cavity 211. All the first through holes form the inlet 214 of the airflow channel 215. The sealing cap 22 is provided with at least one second through hole corresponding to the third carrier cavity 213. The second through hole is connected to the third carrier cavity 213. All the second through holes form the outlet 221 of the airflow channel 215. This setup is simple and extends the length of the aerosol flow path, allowing the aerosol to fully exchange heat and be filtered within the airflow channel 215, ensuring sufficient cooling of the aerosol and improving the user's suction experience.

[0062] Furthermore, referring to Figure 16 As shown, this embodiment also provides an aerosol generating device 1000, including a main unit 400 and the aforementioned filter 100. The filter 100 is detachably connected to the main unit 400. The main unit 400 is used to heat the aerosol generating matrix to generate aerosols. The aerosols enter the filter 100 through the air inlet 13, and after being cooled and filtered through the airflow channel 215 of one of the filter elements, they are discharged from the suction port 12. By using the aforementioned filter 100, the user's operating costs can be effectively reduced.

[0063] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A filter tip for use in an aerosol generating device, characterized in that, include: A filter housing having a receiving cavity, the filter housing having a suction port and an air inlet respectively communicating with the receiving cavity; At least two filter cartridge assemblies, each filter cartridge assembly being at least partially housed within the receiving cavity, and each filter cartridge assembly having an airflow passage; The airflow channel of each filter element assembly is switchably connected to at least one of the air inlet and the suction port, and only one filter element assembly has an airflow channel that is simultaneously connected to the air inlet and the suction port. The air inlet is connected to the inlet of the airflow channel of all the filter elements, and the suction port can be switched to be connected to the outlet of the airflow channel of any one of the filter elements. The filter housing includes a first housing and a second housing that are movably connected; One of the first housing and the second housing is provided with the suction port, and the other of the first housing and the second housing is provided with the air inlet. The first housing and the second housing together form the accommodating cavity. The first housing and the second housing are movable relative to each other so that the suction port can be switched to be connected to the outlet of the airflow channel of any of the filter elements; The first housing and the second housing are detachably connected to replace the filter element assembly, and the two can switch between a first connection state and a second connection state; When in the first connection state, the suction port is connected to the outlet of the airflow channel of one of the filter elements; when in the second connection state, the suction port is connected to the outlet of the airflow channel of the other filter element. In the first connection state, the first housing and the second housing are disassembled and rotated relative to each other by a preset angle before being reconnected, so that the suction port is connected to the outlet of the airflow channel of another filter element assembly, thereby switching the first housing and the second housing to the second connection state.

2. The filter tip according to claim 1, characterized in that, The outlets of the airflow channels of all the filter assemblies are arranged along the rotation path of the suction port.

3. The filter tip as described in claim 1, characterized in that, The filter tip also includes an adjustment component, which is partially located inside the filter housing and is used to allow the suction port to be switched to be connected to the outlet of the airflow channel of any of the filter cartridges.

4. The filter tip as described in claim 3, characterized in that, The filter housing is provided with a perforation that communicates with the accommodating cavity; The adjustment assembly includes a cover portion and a rotating portion; one end of the rotating portion is connected to the cover portion, and the other end extends out of the filter housing through the perforation; the cover portion is provided with a vent hole, which is used to connect the suction port with the outlet of the airflow channel of one of the filter element assemblies, and the cover portion is used to block the outlet of the airflow channel of the other filter element assemblies. The rotating part can rotate to drive the cover part to rotate, so that the vent hole rotates, thereby allowing the suction port to be switched to connect with the outlet of the airflow channel of any of the filter elements.

5. The filter tip as described in claim 4, characterized in that, The outlets of the airflow channels of all the filter elements are arranged along the rotation path of the vent holes.

6. The filter tip as described in claim 3, characterized in that, The filter housing is provided with a sliding groove that communicates with the receiving cavity; The adjustment assembly includes a cover, a lever, and a seal; one end of the lever is connected to the cover, and the other end extends out of the filter housing through the sliding groove. The sealing element is sleeved around the circumference of the actuating part and sandwiched between the filter shell and the cover part to seal the sliding groove; the cover part is provided with a vent hole, which is used to connect the suction port with the outlet of one of the airflow channels, and the cover part is used to block the outlets of the other airflow channels; The actuating part can slide along the sliding groove to drive the cover part to slide, so that the vent hole slides, thereby allowing the suction port to be switched to connect with the outlet of the airflow channel of any of the filter elements.

7. The filter tip as described in claim 6, characterized in that, The outlets of the airflow channels of all the filter assemblies are arranged along the sliding path of the vent holes.

8. The filter tip according to any one of claims 1-7, characterized in that, The side of the filter housing with the air inlet is spaced apart from the side of all the filter element assemblies with the airflow channel inlet, to form an air intake channel for airflow to pass through. The air inlet is connected to the inlet of the airflow channel of all the filter element assemblies through the air intake channel.

9. The filter tip according to any one of claims 1-7, characterized in that, The filter element assembly is detachably housed in the receiving cavity.

10. The filter tip according to any one of claims 1-7, characterized in that, The filter element assembly has filter particles in the airflow channel for filtering the flowing aerosol.

11. The filter tip as claimed in claim 10, characterized in that, The filter assembly includes a particle carrying container and a sealing cap covering the particle carrying container, wherein the filter particles are placed inside the particle carrying container.

12. The filter tip as claimed in claim 10, characterized in that, The filter assembly is also provided with flavoring particles in the airflow channel for flavoring the flowing aerosol. The flavoring particles are positioned downstream of the filter particles along the airflow channel.

13. An aerosol generating device, characterized in that, It includes a main unit and a filter as described in any one of claims 1 to 12, the filter being detachably connected to the main unit, the main unit being used to heat an aerosol generating matrix to generate an aerosol.

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