An aerosol generating device and its filter component and host component

Abstract

The present invention relates to the field of aerosol generation, and discloses an aerosol generating device and its filter assembly and main unit assembly. The filter assembly includes a filter body and a connecting tube. One end of the filter body is connected to the connecting tube, and the other end is provided with a suction port. A suction channel is formed between the suction port and the connecting tube. The main unit assembly includes a shell and a heating assembly disposed within the shell. The shell is provided with an opening communicating with the outside. An air intake channel is provided on the side wall of one end of the heating assembly near the connecting tube. The connecting tube is at least partially plugged into the end of the heating assembly near the filter assembly. The air intake channel is connected to both the opening and the connecting tube. In this solution, there is no need to provide an additional air intake channel on the filter assembly to achieve ventilation, making the filter assembly structure relatively simple and reducing the production cost of the filter assembly.

Description

Technical Field

[0001] The present invention relates to the field of aerosol generation, in particular to an aerosol generating device and a filter component and a host component thereof. Background Art

[0002] Cigarette smoke contains harmful substances such as tar, which can be harmful to the human body if inhaled over a long period of time. To combat this, aerosol generators have emerged. These heat conventional cigarettes to create aerosols, which can then atomize conditioning fluids such as essential oils. The atomized essential oils are then mixed with the aerosol produced by the cigarettes, which are then inhaled by the user. This allows the essential oils to adjust the taste of the cigarettes.

[0003] An aerosol generating device generally includes a filter structure and a main body structure. The filter structure is provided with a suction channel, and the main body structure is provided with a heating tube. The heating tube is used to heat a product containing an aerosol-forming matrix to generate an aerosol. The suction channel is connected to the heating tube. When the smoker inhales, the aerosol enters the smoker's mouth from the heating tube through the suction channel.

[0004] Currently, to ensure balanced pressures inside and outside the inhalation channel during inhalation, an additional air intake channel is typically added to the filter structure. This intake channel connects the inhalation channel to the outside world, allowing for balanced pressures. However, this approach complicates the filter structure and increases production costs. Filters are consumables that require frequent replacement, leading to high user costs. Summary of the Invention

[0005] The embodiments of the present invention aim to provide an aerosol generating device and its filter assembly and host assembly, so as to solve the technical problem in the prior art that the filter structure is complex and leads to high filter production cost.

[0006] The embodiment of the present invention solves the technical problem by adopting the following technical solution: providing an aerosol generating device, comprising a filter component and a main body component connected thereto,

[0007] The filter assembly includes a filter body and a connecting tube, one end of the filter body is connected to the connecting tube, and the other end is provided with a suction port, and a suction channel is formed between the suction port and the connecting tube;

[0008] The main unit assembly includes a shell and a heating assembly disposed within the shell. The shell is provided with an opening communicating with the outside. An air intake passage is provided on a side wall of one end of the heating assembly close to the filter assembly, and the air intake passage is communicated with the opening.

[0009] The connecting pipe is at least partially plugged into one end of the heating component close to the filter component, and the connecting pipe is communicated with the air inlet channel.

[0010] In some embodiments, the heating assembly includes a heating tube and a connecting assembly, one end of the connecting assembly is connected to the heating tube, the connecting tube is at least partially plugged into the other end of the connecting assembly, and the air intake channel is provided in the connecting assembly.

[0011] In some embodiments, a first air inlet hole is formed on the connecting pipe, and the air inlet channel is connected to the first air inlet hole.

[0012] In some embodiments, a convex ring is provided on the outer circumference of the connecting tube, and the convex ring fits against the inner wall of the connecting assembly.

[0013] In some embodiments, a first air inlet hole is formed on the connecting pipe, and the air inlet channel is connected to the first air inlet hole;

[0014] The first air inlet is arranged on a side of the convex ring close to the filter body.

[0015] In some embodiments, the connecting assembly includes a first sealing member and a sealing assembly, two ends of the first sealing member are respectively connected to the heating tube and the sealing assembly, and the air inlet channel is provided on a side wall of the sealing assembly.

[0016] In some embodiments, the sealing assembly includes a second sealing member and a third sealing member, wherein the second sealing member is sleeved on an end of the first sealing member away from the heating tube, and the third sealing member is sleeved on the second sealing member, the second sealing member is provided with a second air inlet hole, and the third sealing member is provided with a third air inlet hole, and the second air inlet hole and the third air inlet hole are connected to form the air inlet channel;

[0017] The connecting pipe is at least partially plugged into the second sealing member and the third sealing member.

[0018] In some embodiments, the main unit assembly further includes an inner bracket, the inner bracket including a first mounting portion and a second mounting portion disposed opposite to each other, the other end of the connecting assembly being disposed on the first mounting portion, and the bottom end of the heating tube being mounted on the second mounting portion;

[0019] The other end of the connecting assembly is provided with the air intake channel;

[0020] The first mounting portion includes a bottom wall and a side wall, wherein the side wall is arranged around the circumference of the bottom wall, and the bottom wall and the side wall together form a mounting groove, and the other end of the connecting assembly is mounted in the mounting groove;

[0021] A gap is formed between the outer surface of the connecting assembly and the inner surface of the side wall, and the external airflow can communicate with the air intake channel through the gap.

[0022] In some embodiments, the side wall includes a main body portion and a protruding portion, the protruding portion corresponds to the air inlet channel, and the protruding portion protrudes toward the outside of the connecting assembly.

[0023] An embodiment of the present invention also adopts the following technical solution to solve its technical problems: a main unit component is provided, including a shell and a heating component arranged in the shell, the shell is provided with an opening connected to the outside, and the side wall of one end of the heating component is provided with an air intake channel, the air intake channel is connected to the opening, and the air intake channel is used to communicate with the connecting pipe of the filter assembly.

[0024] In some embodiments, the heating assembly includes a heating tube and a connecting assembly, the connecting assembly is connected to the heating tube, and the air inlet passage is provided in the connecting assembly.

[0025] The embodiments of the present invention also solve the technical problems by adopting the following technical solutions: providing a filter assembly, comprising a filter body and a connecting tube, wherein one end of the filter body is connected to the connecting tube, and the other end of the filter body is provided with a suction port, and a suction channel is formed between the suction port and the connecting tube;

[0026] At least a portion of the connecting pipe is used to be plugged into the heating component of the host component;

[0027] The connecting pipe is provided with a first air inlet hole, and the first air inlet hole is used to communicate with the air inlet channel of the main unit component.

[0028] In some embodiments, a convex ring is provided on the outer circumference of the connecting tube, and the first air inlet is provided on a side of the convex ring close to the filter body.

[0029] Compared to the prior art, the aerosol generating device provided in the embodiments of the present invention has an opening on the housing that communicates with the outside, and an air inlet channel is provided on the side wall of one end of the heating assembly near the filter assembly. The air inlet channel is connected to both the opening and the connecting tube. When the user inhales through the suction port, a negative pressure is formed in the suction channel and inside the heating assembly, causing external airflow to enter the housing through the opening on the housing and then enter the connecting tube through the air inlet channel on the heating assembly, thereby ensuring a balance of pressure inside and outside the connecting tube. This eliminates the need for an additional air inlet channel on the filter assembly to achieve air intake, making the filter assembly structure relatively simple, reducing the cost of the filter structure, and reducing the cost of use for the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0031] Figure 1 A schematic diagram of the three-dimensional structure of an aerosol generating device provided in one embodiment of the present invention;

[0032] Figure 2 This is a schematic exploded view of the aerosol generating device according to an embodiment of the present invention with the housing removed;

[0033] Figure 3 Schematic diagram of the internal structure of an aerosol generating device according to an embodiment of the present invention;

[0034] Figure 4 Schematic diagram of the internal structure of the aerosol generating device according to an embodiment of the present invention from another angle;

[0035] Figure 5 This is a schematic diagram of the exploded structure of the connecting assembly and the heating tube according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the connection assembly and the heating tube after assembly according to an embodiment of the present invention;

[0037] Figure 7 Schematic diagram of the internal structure near the connecting components in the aerosol generating device according to an embodiment of the present invention;

[0038] Figure 8 This is a schematic structural diagram of a filter assembly according to an embodiment of the present invention;

[0039] Figure 9 Schematic diagram of the structure of the inner bracket in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] For ease of understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on another element, or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "upper end", "lower end", "top" and "bottom" used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0042] See also Figures 1 to 4 , Figure 1 : is a schematic diagram of the three-dimensional structure of an aerosol generating device according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the decomposition of the aerosol generating device after removing the shell. Figure 3 This is a schematic diagram of the internal structure of the aerosol generating device. Figure 4 : This is a schematic diagram of the internal structure of the aerosol generating device from another angle. The aerosol generating device 100 provided in an embodiment of the present invention includes a filter assembly 10 and a main assembly 20, which are connected to each other. The filter assembly 10 includes a filter body 11 and a connecting tube 12. One end of the filter body 11 is connected to the connecting tube 12, and the other end is provided with a suction port 13. A suction channel 14 is formed between the suction port 13 and the connecting tube 12. The main assembly 20 includes a housing 21 and a heating assembly 22 disposed within the housing 21. The housing 21 is provided with an opening 210 communicating with the outside. An air inlet channel 220 is defined on a sidewall of one end of the heating assembly 22 near the first mounting portion 230. The air inlet channel 220 is connected to the opening 210. The connecting tube 12 is at least partially plugged into the end of the heating assembly 22 near the filter assembly 10, and the connecting tube 12 is connected to the air inlet channel 220.

[0043] The filter assembly 10 includes a filter body 11 and a connecting tube 12. The main unit assembly 20 includes a shell 21 and a heating assembly 22, a power supply battery 24, and an electronic control board 25 arranged in the shell 21. The filter assembly 10 is arranged at the upper end of the main unit assembly 20 and is detachably connected to the main unit assembly 20. Specifically, the filter assembly 10 and the main unit assembly 20 can be detachably connected by means of a snap connection, a magnetic connection, etc. For example, Figure 2 In the embodiment, a protrusion 111 is provided on the outer surface of the filter body 11 , and the protrusion 111 abuts against the inner surface of the shell 21 to achieve a detachable connection between the filter assembly 10 and the main assembly 20 .

[0044] The housing 21 may be a hollow ring-shaped structure. An opening 210 communicating with the outside is formed on the housing 21, through which external airflow can enter the housing 21. The housing 21 is also provided with an insertion port 211, which is connected to the heating assembly 22. Through the insertion port 211, a user can insert a product containing an aerosol-forming matrix into the heating assembly 22 for heating. Specifically, the product containing an aerosol-forming matrix may be a cigarette, a tobacco derivative (such as a special cigarette cartridge), or other product that can generate an aerosol by heating. For ease of illustration, the following description of products containing an aerosol-forming matrix uses cigarettes as an example.

[0045] The heating assembly 22 is mounted within the housing 21. A heating tube 221 is provided within the heating assembly 22. The heating tube 221 includes a heating element 2210 and a smoke chamber 2211. The smoke chamber 2211 may be hollow and tubular. The heating element 2210 may be a heating circuit surrounding the outer wall of the smoke chamber 2211. The heating element 2210 may also be a needle-shaped or sheet-shaped heating element disposed within the smoke chamber 2211. In this embodiment, the heating element 2210 is a heating circuit surrounding the outer wall of the smoke chamber 2211.

[0046] The smoke chamber 2211 is used to accommodate products containing an aerosol-forming matrix. The smoke chamber 2211 is connected to the plug interface 211 on the shell. The user can insert the cigarette into the smoke chamber 2211 through the plug interface 211. The heating element 2210 is used to heat the cigarette so that the cigarette releases aerosol after being heated to a certain temperature.

[0047] The power supply battery 24 is installed in the shell 21. The power supply battery 24 can be a rechargeable battery, for example, the power supply battery 24 is a rechargeable lithium battery. The power supply battery 24 is electrically connected to the heating element 2210. The heating element 2210 can generate heat after being powered on to bake the cigarette in the smoke chamber 2211, so that the cigarette releases aerosol after being heated to a certain temperature.

[0048] The electric control board 25 is installed in the housing 21 and is electrically connected to the power supply battery 24. The electric control board 25 is used to control the power supply battery 24 to supply power to the heating component 22 so that the heating component 22 can generate heat to dry the cigarettes.

[0049] In some embodiments, the host assembly 20 further includes an inner bracket 23 , which is disposed in the housing 21 , and the heating assembly 22 , the power supply battery 24 , and the electronic control board 25 are all mounted on the inner bracket 23 .

[0050] The inner bracket 23 has a first mounting portion 230 and a second mounting portion 234 that are arranged opposite to each other. Both ends of the heating component 22 are respectively mounted in the first mounting portion 230 and the second mounting portion 234 . The heating component 22 is fixed and limited by the inner bracket 23 .

[0051] In addition, the inner bracket 23 can also fix and limit the middle position of the heating component 22. In this case, there is no need to set the first mounting portion 230 and the second mounting portion 234 to fix and limit the two ends of the heating component 22.

[0052] In addition, in some other embodiments, other assembly components may be provided on the shell 21 to install the heating component 22, the power supply battery 24 and the electronic control board 25, or the heating component 22, the power supply battery 24 and the electronic control board 25 may be directly assembled on the shell 21, and are not limited to installing the heating component 22, the power supply battery 24 and the electronic control board 25 through the inner bracket 21.

[0053] A suction channel 14 is provided inside the filter body 11, and the connecting tube 12 extends out of the side surface of the filter body 11 close to the main unit assembly 20 and is connected to the suction channel 14. After the main unit assembly 20 and the filter assembly 10 are connected, the connecting tube 12 is at least partially inserted into the smoke chamber 2211, so that the suction channel 14 can be connected to the smoke chamber 2211 through the connecting tube 12. When the smoker inhales through the suction port 13, the aerosol generated in the smoke chamber 2211 passes through the connecting tube 12 and the suction channel 14 in turn and is consumed by the smoker through the suction port 13.

[0054] When the smoker draws in, a negative pressure is generated within the suction channel 14 and the smoke chamber 2211, causing external airflow to enter the inner cavity of the housing 21 through the opening 210 in the housing 21, and then enter the connecting tube 12 and the suction channel 14 through the air inlet channel 220, thereby ensuring pressure balance inside and outside the connecting tube 12 and the suction channel 14. Because the external airflow enters the connecting tube 12 and the suction channel 14 through the opening 210 in the housing 21 and the air inlet channel 220 in the heating assembly 22, there is no need to provide an additional air inlet channel in the filter assembly 10 to achieve air intake, making the filter assembly 10 relatively simple in structure and reducing the production cost of the aerosol generating device 100.

[0055] In some embodiments, the plug port 211 is opened at the bottom of the shell 21, and the cigarette is inserted into the smoke chamber 2211 of the heating component 22 through the opening 210, and the external air flow enters the interior of the shell 21 through the plug port 211. In other words, the plug port 211 at this time is an opening, so there is no need to set up a separate opening.

[0056] And because the plug port 211 is set at the bottom of the shell, the airflow entering from the bottom plug port 211 can take away the heat inside the shell 21 when flowing to the air inlet channel 220, thereby reducing the temperature inside the shell 21, thereby reducing the temperature of the outer wall of the shell 21 and reducing the phenomenon of users being burned.

[0057] In other embodiments, the housing 21 includes an outer shell 212 and a bottom cover 213 , and the outer shell 212 and the bottom cover 213 are assembled with a gap. The above-mentioned opening 210 is the gap between the outer shell 212 and the bottom cover 213 , and the external airflow enters the housing 21 through the gap.

[0058] In some other embodiments, a communication hole may be further provided on the housing 21 as an opening 210 for the entry of external air.

[0059] In some embodiments, a liquid storage chamber 110 is provided in the filter body 11, and a regulating liquid is contained in the liquid storage chamber 110. An atomizer core 121 is provided in the connecting tube 12, and the atomizer core 121 has a porous structure. A liquid guide chamber 123 is provided in the atomizer core 121, and the upper end of the liquid guide chamber 123 is connected to the liquid storage chamber 110 and the lower end is closed. An atomizer chamber 124 is formed between the side wall of the atomizer core 121 and the side wall of the connecting tube 12. The smoke chamber 2211 is connected to the atomizer chamber 124, and the atomizer chamber 124 is connected to the suction channel 14. The side wall and lower end of the atomizer core 121 both have a porous structure, and the regulating liquid in the liquid storage chamber 110 flows into the liquid guide chamber 123 in the atomizer core 121. When the heating component 22 heats the cigarette, the high-temperature smoke from the smoke chamber 2211 causes the regulating liquid to penetrate into the atomizing chamber 124 outside the atomizing core 121 through the side wall and the porous structure at the lower end of the atomizing core 121, and the high-temperature smoke atomizes the regulating liquid that penetrates into the outer wall in the atomizing chamber 124 to form atomized gas. The smoke and the atomized gas are mixed. When the smoker inhales, the mixture of the smoke and the atomizer is discharged from the suction port 13 after passing through the suction channel 14, so as to improve the smoking taste.

[0060] In addition, the atomizer core 121 can also be a hollow tube. A liquid guide cavity is formed between the side wall of the atomizer core 121 and the side wall of the connecting tube 12. The liquid guide cavity is connected to the liquid storage cavity 110. An atomizer cavity connected to the smoke cavity 2211 is provided in the atomizer core 121.

[0061] See also Figures 5 to 8 , Figure 5 This is a schematic diagram of the structure after the connection components and heating tubes are decomposed. Figure 6 This is a schematic diagram of the structure after the connection components and heating tubes are assembled. Figure 7 Schematic diagram of the internal structure of the aerosol generating device near the connecting components. Figure 8 The heating assembly 22 includes a heating tube 221 and a connecting assembly 222 . One end of the connecting assembly 222 is connected to the heating tube 221 . The connecting tube 12 is at least partially plugged into the other end of the connecting assembly 222 . The air inlet channel 220 is provided in the connecting assembly 222 .

[0062] The heating tube 221 is used to heat cigarettes. It is coaxially arranged with the bottom opening 210 of the housing 21. External cigarettes are inserted into the heating tube 221 through the bottom opening 210. The heating tube 221 is fixed to the inner bracket 23. Specifically, the top end of the heating tube 221 is fixed to the first mounting portion 230 via a connecting assembly 222, and the bottom end of the heating tube 221 is fixed to the second mounting portion 234 via another connecting assembly.

[0063] The connecting assembly 222 is a hollow ring-shaped structure, and the connecting tube 12 is tightly inserted into the connecting assembly 222. The air inlet channel 220 is located on the connecting assembly 222. When the user inhales, external air enters the housing 21 through the opening 210, then flows through the air inlet channel 220 into the inside of the connecting assembly 222, and then flows from the inside of the connecting assembly 222 into the connecting tube 12 and the suction channel 14.

[0064] The connecting assembly 222 has excellent sealing, high-temperature resistance, and thermal insulation properties. The connecting tube 12 and the heating tube 221 are sealed by the connecting assembly 222, preventing aerosols from diffusing outside the heating tube 221 as the flue gas in the heating tube 221 flows into the connecting tube 12. The connecting assembly 222 can be made of silicone, polyetheretherketone, or a polyimide-based composite material.

[0065] In some embodiments, the heating assembly 22 further includes a vacuum tube 223, which is located outside the heating tube 221. The top of the vacuum tube 223 is sealed to the top of the heating tube 221 via a connecting assembly 222, and the bottom of the vacuum tube 223 is sealed to the bottom of the heating tube 221 via another connecting assembly. The vacuum tube 223 provides thermal insulation, preventing high-temperature smoke in the smoke chamber 2211 from diffusing into the housing 21 and causing the temperature inside the housing 21 to become excessively high.

[0066] In some embodiments, the connecting tube 12 is provided with a first air inlet hole 120, and the air inlet channel 220 is connected to the first air inlet hole 120. One end of the connecting assembly 222 is sleeved on the top of the heating tube 221, and the other end is mounted on the first mounting portion 230. The air inlet channel 220 is located on the side wall of the connecting assembly 222. Along the axial direction of the heating tube 221, the position of the air inlet channel 220 on the connecting assembly 222 is higher than the end of the connecting tube 12. The first air inlet hole 120 provided on the connecting tube 12 is connected to the air inlet channel 220. When the smoker draws air, the external air flows through the opening 210 into the housing 21, then passes through the air inlet channel 220 and the first air inlet hole 120 in sequence, and then enters the connecting tube 12.

[0067] In this embodiment, when the high-temperature flue gas in the heating tube 221 passes through the connecting tube 12, the regulating liquid in the atomizer core 121 is atomized and absorbs heat, and the temperature of the hot gas in the connecting tube 12 is reduced, resulting in low heat transfer efficiency of the hot gas in the connecting tube 12. The hot gas in the connecting tube 12 is not easily transferred to the outside of the heating assembly 22 after passing through the first air inlet hole 120 and the air inlet channel 220, causing the temperature in the shell 21 to increase.

[0068] In other embodiments, along the axial direction of the heating tube 221, the position of the air inlet channel 220 on the connecting assembly 222 is lower than the end position of the connecting tube 12. When the smoker takes a puff, the external airflow enters the shell 21 through the opening 210, then passes through the air inlet channel 220, and enters the connecting tube 12 from the end of the connecting tube 12. In this case, there is no need to provide the first air inlet hole 120 on the connecting tube 12.

[0069] In some embodiments, a protruding ring 122 is provided on the outer circumference of the connecting tube 12 , and the protruding ring 122 fits against the inner wall of the connecting assembly 222 .

[0070] The outer surface of the connecting tube 12 is provided with a convex ring 122 in its circumferential direction. After the connecting tube 12 is inserted into the connecting component 222, the convex ring 122 fits against the inner wall of the connecting component 222 to achieve a sealed connection, so that the aerosol at the top of the heating tube 221 can all flow into the connecting tube 12 without escaping.

[0071] One or more raised rings 122 may be provided. In some embodiments, the outer surface of the connecting tube 12 is provided with multiple raised rings 122 , which form a spiral structure circumferentially surrounding the connecting tube 12 to increase the reliability of the sealed connection between the raised ring 122 and the connecting assembly 222 .

[0072] In some embodiments, the first air inlet hole 120 is arranged on the side of the convex ring 122 close to the filter body 11, and the air inlet channel 220 is also located on the side of the convex ring 122 close to the filter body 11, that is, the first air inlet hole 120 and the air inlet channel 220 are both arranged on the side of the convex ring 122 away from the heating tube 221, so that the air flow entering from the air inlet channel 220 can flow into the atomization chamber 124 and the suction channel 14 as much as possible, and will not enter the smoke chamber 2211. At the same time, the position of the air inlet channel 220 on the connecting component 222 is far away from the heating tube 221, and the air inlet channel 220 is not easily affected by thermal expansion and contraction and deformed.

[0073] In other embodiments, the air intake channel 220 may also be located on the side of the convex ring 122 away from the filter body 11 and close to the convex ring 122. Due to the setting of the convex ring 122, a gap is formed between the outer surface of the connecting tube 12 and the inner surface of the connecting component 222. When the smoker inhales, the external airflow enters the shell 21 through the opening 210, and then flows into the air intake channel 220, and flows into the end of the connecting tube 12 through the gap between the outer surface of the connecting tube 12 and the inner surface of the connecting component 222, and enters the connecting tube 12 from the end of the connecting tube 12. At this time, it can ensure that the position of the air intake channel 220 on the connecting component 222 is far away from the heating tube 221, and there is no need to set the first air intake hole 120 on the connecting tube 12.

[0074] In some embodiments, the connecting component 222 includes a first sealing component 2220 and a sealing component 2221. The two ends of the first sealing component 2220 are respectively connected to the heating tube 221 and the sealing component 2221. The air intake channel 220 is arranged on the side wall of the sealing component 2221, and the convex ring 122 is against the inner wall of the sealing component 2221.

[0075] The first seal 2220 and the sealing assembly 2221 are sealing rings of a predetermined length. The lower end of the first seal 2220 is sleeved onto the outer surface of the heating tube 221, with the inner wall of the lower end of the first seal 2220 tightly fitting the outer wall of the heating tube 221. The sealing assembly 2221 is mounted on the first mounting portion 230 and sleeved onto the outer side of the first seal 2220. The inner wall of the sealing assembly 2221 tightly fits the outer wall of the upper end of the first seal 2220 and the inner wall of the sealing assembly 2221 also tightly fits the raised ring 122. The aerosol in the heating tube 221 passes through the first seal 2220 and the sealing assembly 2221 in sequence, and then enters the connecting tube 12 without leakage.

[0076] The first seal 2220 and the sealing assembly 2221 have a good heat insulation effect. The first seal 2220 separates the heating tube from the sealing assembly 2221, so that the temperature of the sealing assembly 2221 is lower, and the sealing assembly 2221 is not easy to transfer heat to the first mounting part 230. That is, the first seal 2220 and the sealing assembly 2221 prevent the heating tube from transferring heat to the inner bracket 23, so that the inner bracket 23 can be at a lower temperature, and the temperature of the outer wall of the shell 21 is lower, which is not easy to scald the user.

[0077] Furthermore, since the first sealing member 2220 is in direct contact with the heating tube 221, it has relatively high requirements for high temperature resistance, while the sealing assembly 2221 is connected to the end of the first sealing member 2220 away from the heating tube 221, and therefore has relatively low requirements for high temperature resistance. Therefore, in some embodiments, the first sealing member 2220 and the sealing assembly 2221 are made of two materials with different high temperature resistance properties.

[0078] Specifically, the first sealing member 2220 may be made of a material with strong high temperature resistance, while the sealing component 2221 may be made of a material with relatively weak high temperature resistance, thereby saving production costs while meeting heat resistance requirements.

[0079] For example, the first sealing member 2220 may be made of a relatively expensive polyimide-based composite material (PI), and the sealing component 2221 may be made of a relatively cheap silicone material.

[0080] In other embodiments, the first sealing member 2220 and the sealing assembly 2221 may also be made of a polyimide-based composite material.

[0081] The sealing assembly 2221 may include a second seal 2222 and a third seal 2223. The second seal 2222 is sleeved on the end of the first seal 2220 away from the heating tube 221, and the third seal 2223 is sleeved on the outside of the second seal 2222. The second seal 2222 is provided with a second air inlet hole 2226, and the third seal 2223 is provided with a third air inlet hole 2227. The second air inlet hole 2226 is connected to the third air inlet hole 2227 to form an air inlet channel 220. The third air inlet hole 2227, the second air inlet hole 2226 and the first air inlet hole 120 are connected in sequence, and the connecting pipe 12 is at least partially inserted into the second seal 2222 and the third seal 2223.

[0082] The second sealing member 2222 is arranged on the inner side of the third sealing member 2223. The outer wall of the second sealing member 2222 has a protrusion 2228, and the protrusion 2228 is provided with a second air inlet hole 2226. When assembling the second sealing member 2222 and the third sealing member 2223, the protrusion 2228 is embedded in the third air inlet hole 2227 so that the hole axes of the second air inlet hole 2226 and the third air inlet hole 2227 are collinear.

[0083] The connecting tube 12 is at least partially inserted into the second sealing member 2222. When the connecting tube 12 is inserted into the second sealing member 2222, the convex ring 122 is abutted against the inner wall of the second sealing member 2222. The convex ring 122 forms a gap between the inner wall of the second sealing member 2222 and the outer wall of the connecting tube 12. After the external air flow enters the shell 21 through the opening 210, it can pass through the third air inlet hole 2227 and the second air inlet hole 2226 in turn to enter the gap, and then flow into the first air inlet hole 120 through the gap. Therefore, when the filter assembly 10 is assembled to the main assembly 20, the first air inlet hole 120 on the connecting tube 12 does not need to be aligned with the second air inlet hole 2226 and the third air inlet hole 2227, thereby reducing the difficulty of assembling the filter assembly 10 and the main assembly 20.

[0084] When the user inhales, external air enters the shell 21 through the opening 210, then passes through the third air inlet hole 2227, the second air inlet hole 2226 and the first air inlet hole 120 in sequence, and finally enters the connecting pipe 12 and the suction channel 14, thereby ensuring the balance of internal and external pressures during inhalation.

[0085] In some embodiments, the first seal 2220 , the second seal 2222 , and the third seal 2223 use three high-temperature resistant materials with different properties, thereby meeting high-temperature resistance requirements while saving production costs.

[0086] For example, the first sealing member 2220 is made of a polyetheretherketone (PI) composite material, the second sealing member 2222 is made of a polyimide (PEEK) polymer material, and the third sealing member 2223 is made of a silicone material.

[0087] The first seal 2220 (PI) has the best high temperature resistance but is more expensive, the third seal 2223 (silicone) has poor high temperature resistance but good sealing performance, and the second seal 2222 (PEEK) has a high temperature resistance between the first seal 2220 and the third seal 2223. Therefore, by setting the above three seals 2223, it is possible to reduce production costs while ensuring its high temperature resistance and sealing performance.

[0088] See also Figure 9 , and refer back to Figure 5 , Figure 9 This is a structural diagram of the inner bracket. The first mounting portion 230 includes a bottom wall 231 and a side wall 232. The side wall 232 is circumferentially arranged around the bottom wall 231. The bottom wall 231 and the side wall 232 are combined to form a mounting groove 233. The connecting component 222 is provided with an end of the air intake channel 220 installed in the mounting groove 233. After the connecting component 222 is installed in the mounting groove 233, a gap is formed between the outer surface of the connecting component 222 and the inner surface of the side wall 232, and the external airflow can be connected to the air intake channel 220 through the gap.

[0089] A through hole 2310 is provided on the bottom wall 231 , and the connecting component 222 is provided with an air inlet channel 220 , one end of which is assembled in the mounting groove 233 , and the other end is connected to the heating pipe 221 , and the connecting pipe 12 passes through the through hole 2310 on the bottom wall 231 and is inserted into the connecting component 222 .

[0090] The external airflow is the airflow from the outside of the shell 210 that enters the shell 21 through the opening 210. A gap is formed between the outer surface of the connecting component 222 and the inner surface of the side wall, so that after the connecting component 222 is assembled in the mounting groove 233, the outer surface of the connecting component 222 and the inner surface of the side wall 232 will not fit tightly and block the air intake channel 220, so that the external airflow can enter the air intake channel 220 through the gap between the two.

[0091] In some embodiments, a plurality of locking blocks 2224 are spaced apart on the outer periphery of the connecting component 222 , and the locking blocks 2224 abut against the inner surface of the side wall 232 .

[0092] Along the axial direction of the connecting component 222 , the thickness of the clamping block 2224 gradually decreases from the end close to the heating tube 221 to the end away from the heating tube 221 , so that the connecting component 222 can be clamped in the installation groove 233 through the clamping block 2224 .

[0093] When assembled, the block 2224 fits against the inner surface of the side wall 232, while the outer surface of the connecting component 222 does not contact the inner surface of the side wall 232, so that a gap is formed between the outer surface of the connecting component 222 and the inner surface of the side wall 232, and the external airflow can enter the air intake channel 220 through the gap.

[0094] In addition, the setting of the block 2224 prevents the outer side surface of the connecting component 222 from directly contacting the inner surface of the side wall 232, thereby reducing the contact area between the connecting component 222 and the side wall 232 and reducing the heat transfer between the connecting component 222 and the inner bracket 23.

[0095] In some embodiments, the blocking block 2224 is disposed on the third sealing member 2223 .

[0096] In some embodiments, the side wall 232 includes a main body portion 2320 and a protruding portion 2321 . The protruding portion 2321 corresponds to the air inlet passage 220 , and the protruding portion 2321 protrudes toward the outside of the connecting assembly 222 .

[0097] The protrusions 2321 correspond to the air intake channels 220 , and the number of the protrusions 2321 is consistent with the number of the air intake channels 220 . For example, two relatively symmetrical protrusions 2321 are provided on the connecting component 222 to ensure sufficient and balanced air intake.

[0098] The protrusion 2321 is semicircular in shape. When the connecting component 222 is assembled into the mounting groove 233, the protrusion 2321 makes way for the air inlet channel 220 so that the air inlet channel 220 is not blocked. When the smoker inhales, the external air flow passes through the opening 210 on the shell 21, the protrusion 2321, the air inlet channel 220 on the connecting component 222, and the first air inlet hole 120 on the connecting pipe 12 in sequence before entering the connecting pipe 12 and the suction channel 14.

[0099] The protrusion 2321 protrudes toward the outside of the connecting pipe 12, so that the distance between the protrusion 2321 and the intake channel 220 at the location of the intake channel 220 is large enough, thereby improving the intake efficiency at this location.

[0100] In some embodiments, the end surface of the connecting component 222 facing away from the heating tube 221 abuts against the inner surface of the bottom wall 231 , and the end surface of the connecting component 222 facing away from the heating tube 221 is provided with a plurality of recesses 2225 .

[0101] The recess 2225 is arranged on the end surface of the connecting component 222 away from the heating tube 221, that is, the recess 2225 is located on the third sealing member 2223. The recess 2225 can be a through hole, a blind hole, a groove, etc. opened on the end surface of the third sealing member 2223 away from the heating tube 221.

[0102] The recess 2225 is used to reduce the contact area between the connecting assembly 222 and the bottom wall 231 , so as to further reduce heat transfer between the connecting assembly 222 and the inner bracket 23 .

[0103] Based on the same inventive concept, an embodiment of the present invention also provides a main unit assembly 20, including a shell 21 and a heating assembly 22 arranged in the shell 21. The shell 21 is provided with an opening 210 connected to the outside. The side wall of the heating assembly 22 close to the first mounting portion 230 is provided with an air intake channel 220. The air intake channel 220 is connected to the opening 210, and the air intake channel 220 is used to communicate with the connecting pipe 12 of the filter assembly 10.

[0104] After the filter assembly 10 is connected to the main body assembly 20, the air inlet passage 220 communicates with the connecting tube 12 and the opening 210. When a user draws air through the filter assembly 10, a negative pressure is formed in the connecting tube 12, causing external air to enter the housing 21 through the opening 210 and then enter the connecting tube 12 through the air inlet passage 220, thereby maintaining the balance of air pressure inside and outside the filter assembly 10. In this embodiment, there is no need to provide an additional air inlet passage on the filter assembly 10 to achieve air intake, making the filter assembly 10 relatively simple in structure and reducing the cost of replacing the filter assembly 10 for the user.

[0105] In some embodiments, the heating assembly 22 includes a heating tube 221 and a connecting assembly 222 . The connecting assembly 222 is connected to the heating tube 221 , and the air inlet passage 220 is provided on the connecting assembly 222 .

[0106] Based on the same inventive concept, an embodiment of the present invention also provides a filter assembly 10, including a filter body 11 and a connecting tube 12, one end of the filter body 11 is connected to the connecting tube 12, and the other end is provided with a suction port 13, and a suction channel 14 is formed between the suction port 13 and the connecting tube 12; the connecting tube 12 is at least partially used to be plugged into the heating assembly 22 of the main assembly 20; a first air inlet hole 120 is provided on the connecting tube 12, and the first air inlet hole 120 is used to communicate with the air inlet channel 220 of the main assembly 20.

[0107] In this embodiment, the air intake channel 220 is provided on the main unit assembly 20. When the user inhales through the suction port 13, the external air flow passes through the air intake channel 220 and the first air intake hole 220 in sequence and then enters the connecting tube 12, thereby maintaining the balance of air pressure inside and outside the filter assembly 10. Since there is no need to provide an additional air intake channel on the filter assembly 10 to achieve air intake, the structure of the filter assembly 10 is relatively simple, which reduces the cost for users to replace the filter assembly 10.

[0108] In some embodiments, a protruding ring 122 is provided on the outer circumference of the connecting tube 12 , and the first air inlet 120 is provided on a side of the protruding ring 122 close to the filter body 11 .

[0109] Since the first air inlet hole 120 is arranged on the side of the convex ring 122 close to the filter body 11, the air flow entering from the air inlet channel 220 can flow into the connecting tube 12 as much as possible without entering the smoke chamber 221. At the same time, the position of the air inlet channel 220 on the connecting component 222 is far away from the heating tube 221, and the air inlet channel 220 is not easily deformed by thermal expansion and contraction.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above. For the sake of simplicity, they are not provided in detail. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An aerosol generating device, characterized in that It includes a filter component and a main unit component connected to each other; The filter assembly includes a filter body and a connecting tube, one end of the filter body is connected to the connecting tube, and the other end is provided with a suction port, and a suction channel is formed between the suction port and the connecting tube; The main unit assembly includes a shell and a heating assembly disposed within the shell. The shell is provided with an opening communicating with the outside. An air intake passage is provided on a side wall of one end of the heating assembly close to the filter assembly, and the air intake passage is communicated with the opening. The connecting pipe is at least partially plugged into one end of the heating assembly close to the filter assembly, and the connecting pipe is connected to the air inlet channel; The heating assembly includes a heating tube and a connecting assembly, one end of the connecting assembly is connected to the heating tube, the connecting tube is at least partially plugged into the other end of the connecting assembly, and the air inlet passage is provided in the connecting assembly; A convex ring is provided on the outer circumference of the connecting tube, and the convex ring fits against the inner wall of the connecting assembly to achieve a sealed connection, so that the aerosol at the top of the heating tube can all flow into the connecting tube without escaping; A first air inlet hole is formed on the connecting pipe, and the air inlet channel is connected to the first air inlet hole; The first air inlet is arranged on a side of the convex ring close to the filter body.

2. The aerosol generating device according to claim 1, wherein The connecting assembly includes a first sealing member and a sealing assembly. Two ends of the first sealing member are respectively connected to the heating tube and the sealing assembly. The air inlet channel is arranged on the side wall of the sealing assembly.

3. The aerosol generating device according to claim 2, wherein: The sealing assembly includes a second sealing member and a third sealing member, wherein the second sealing member is sleeved on an end of the first sealing member away from the heating tube, and the third sealing member is sleeved on the second sealing member, the second sealing member is provided with a second air inlet hole, and the third sealing member is provided with a third air inlet hole, and the second air inlet hole and the third air inlet hole are connected to form the air inlet channel; The connecting pipe is at least partially plugged into the second sealing member and the third sealing member.

4. The aerosol generating device according to claim 1, wherein The inner bracket includes a first mounting portion and a second mounting portion that are arranged opposite to each other, the other end of the connecting assembly is arranged on the first mounting portion, and the bottom end of the heating tube is installed on the second mounting portion; The other end of the connecting assembly is provided with the air intake channel; The first mounting portion includes a bottom wall and a side wall, wherein the side wall is arranged around the circumference of the bottom wall, and the bottom wall and the side wall together form a mounting groove, and the other end of the connecting assembly is mounted in the mounting groove; A gap is formed between the outer surface of the connecting assembly and the inner surface of the side wall, and the external airflow can communicate with the air intake channel through the gap.

5. The aerosol generating device according to claim 4, characterized in that The side wall includes a main body and a protruding portion, the protruding portion corresponds to the air inlet channel, and the protruding portion protrudes toward the outside of the connecting assembly.

Images