Aerosol-generating device

Abstract

The utility model relates to the technical field of atomization equipment, and discloses an aerosol generating device. The aerosol generating device comprises a shell assembly, and a suction nozzle is arranged on the shell assembly; a liquid storage cavity used for storing a liquid matrix, an atomizing core, a first sealing piece and a first cavity are arranged in the shell assembly. The liquid storage cavity is communicated with the atomizing core in a liquid guide mode, and a main air channel is formed between the atomizing core and the suction nozzle. The first sealing piece is arranged between the suction nozzle and the liquid storage cavity and is in sealing connection with the shell assembly so as to prevent the liquid matrix from leaking to the suction nozzle; the first cavity is communicated with the main air channel; at least part of the boundary of the first cavity is defined by the main air channel, the shell assembly and the first sealing piece. And the first cavity is communicated with the liquid storage cavity through an auxiliary channel. According to the aerosol generating device, the liquid storage cavity and the main air channel are arranged to be in air guide communication through the first cavity and the auxiliary channel, the air pressure in the liquid storage cavity and the air pressure of the main air channel can be balanced, and the situation that the air pressure of the liquid storage cavity is too high to press out and leak a liquid matrix is prevented.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of atomization devices, and particularly to an aerosol generating device. Background Art

[0002] An aerosol generating device is provided with a liquid storage cavity and a liquid storage cotton placed in the liquid storage cavity. The liquid storage cotton adsorbs a liquid matrix. The aerosol generating device further includes a heating component for heating the aerosol generating matrix to generate an aerosol for a user to inhale. In order to prevent the leakage of the liquid matrix, the liquid storage cavity of the existing aerosol generating device has a high sealing performance. However, during transportation or storage, changes in the external environmental pressure and temperature will cause the liquid storage cotton inside the liquid storage cavity to expand, increasing the air pressure inside the liquid storage cavity. When the pressure difference between the inside and outside of the liquid storage cavity is large, it will affect the sealing effect and cause the leakage of the liquid matrix. Summary of the Utility Model

[0003] The main technical problem to be solved by the embodiments of the present application is to provide an aerosol generating device that can solve the problem of liquid matrix leakage.

[0004] To solve the above technical problem, one technical solution adopted by the embodiments of the present application is: to provide an aerosol generating device, including a housing assembly provided with a mouthpiece; a liquid storage cavity, an atomization core, a first seal, and a first cavity are arranged inside the housing assembly. The liquid storage cavity is used to store the liquid matrix; the liquid storage cavity is in liquid guiding communication with the atomization core to provide the liquid matrix for the atomization core to atomize and generate an aerosol. There is a main airway between the atomization core and the mouthpiece, and the main airway is used to direct the aerosol to the mouthpiece; the first seal is arranged between the mouthpiece and the liquid storage cavity and is hermetically connected to the housing assembly to prevent the liquid matrix from leaking to the mouthpiece; the first cavity is in communication with the main airway; at least part of the boundary of the first cavity is defined by the main airway, the housing assembly, and the first seal; the first cavity is in communication with the liquid storage cavity through an auxiliary channel.

[0005] In some embodiments, a first through hole communicating the first cavity and the liquid storage cavity is opened on the first seal, and the first through hole constitutes at least part of the auxiliary channel.

[0006] In some embodiments, the first through hole includes a first section and a second section that are connected. The first section communicates with the liquid storage cavity, and the second section communicates with the first cavity. The diameter of the second section is larger than that of the first section.

[0007] In some embodiments, the extension length L of the first section satisfies: L ≤ 3 mm.

[0008] In some embodiments, the first seal is provided with a second through hole; a first conduit and a second conduit are further provided in the housing assembly, and the first conduit and the second conduit define at least part of the boundary of the main air passage; one end of the first conduit is communicated with the mouthpiece, the other end of the first conduit is communicated with the second through hole, at least part of the other end of the first conduit abuts against the first seal, one end of the second conduit is inserted into the second through hole, and the aerosol generated by the atomization core flows into the second conduit through the other end of the second conduit; the first cavity is communicated with the main air passage through a first gap between the end of the other end of the first conduit and the first seal.

[0009] In some embodiments, the end of the other end of the first conduit has a notch groove, and the notch groove defines at least part of the first gap.

[0010] In some embodiments, a first fiber absorption element is further provided in the housing assembly, and the first fiber absorption element is disposed on a side of the first seal away from the liquid storage cavity; a second gap is formed by a spaced arrangement between the first fiber absorption element and the side wall of the first conduit, and the first cavity is communicated with the main air passage through the second gap and the first gap in sequence.

[0011] In some embodiments, a liquid storage medium is provided in the liquid storage cavity, and a first relief space is provided between the first seal and the liquid storage medium.

[0012] In some embodiments, a second seal is further provided in the housing assembly, the second seal and the first seal are respectively disposed at two ends of the liquid storage cavity and are both hermetically connected to the housing assembly; the second seal is spaced from the liquid storage medium to form a second relief space, and the second relief space is communicated with the first relief space.

[0013] In some embodiments, a detachable plug is provided at the mouthpiece, and the outside is communicated with the main air passage when the plug is removed or when the plug is broken.

[0014] An aerosol generating device according to an embodiment of the present application includes a housing assembly, on which a mouthpiece is provided; a liquid storage cavity, an atomization core, a first seal and a first cavity are arranged inside the housing assembly. The liquid storage cavity is used for storing a liquid matrix; the liquid storage cavity is in liquid guiding connection with the atomization core to provide the liquid matrix for the atomization core to atomize and generate aerosol. There is a main airway between the atomization core and the mouthpiece, and the main airway is used for guiding the aerosol to the mouthpiece; the first seal is arranged between the mouthpiece and the liquid storage cavity and is hermetically connected to the housing assembly to prevent the liquid matrix from leaking to the mouthpiece; the first cavity is communicated with the main airway; at least part of the boundary of the first cavity is defined by the main airway, the housing assembly and the first seal; the first cavity is communicated with the liquid storage cavity through an auxiliary channel. The aerosol generating device of the present application sets the liquid storage cavity and the main airway to be gas guiding and communicating through the first cavity and the auxiliary channel, so that when the temperature and pressure outside the aerosol generating device cause the pressure and temperature in the liquid storage cavity to rise, the gas in the liquid storage cavity can be discharged to the main airway in time to balance the air pressure inside the liquid storage cavity, thereby preventing the air pressure inside the liquid storage cavity from being too high and pressing the liquid matrix out of the liquid guiding connection between the liquid storage cavity and the atomization core and leaking. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application, the drawings required for use in the description of the specific embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0016] Figure 1 is an exploded view of the aerosol generating device according to an embodiment of the present application.

[0017] Figure 2 is a cross-sectional view of the aerosol generating device according to an embodiment of the present application.

[0018] Figure 3 is a schematic diagram of the gas in the liquid storage cavity of the aerosol generating device according to an embodiment of the present application flowing in communication with the main airway.

[0019] Figure 4 is the aerosol generating device according to an embodiment of the present application in Figure 2 an enlarged view of the partial A.

[0020] Figure 5 is the aerosol generating device according to an embodiment of the present application in Figure 2 an enlarged view of the partial B. Detailed Embodiments

[0021] For ease of understanding of this application, the following provides a more detailed description of this application in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The orientation or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as a limitation to this application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application pertains. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not used to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0023] In addition, the technical features involved in different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0024] Please refer to Figures 1 to 5 , wherein Figure 3The dotted arrows indicate the flow direction of the gas. In the aerosol generating device 100 according to the embodiment of the present application, it includes a housing assembly 10, an atomization core 20, and a first seal 31. A mouthpiece 11 for the user to inhale the aerosol is provided on the housing assembly 10. A liquid storage cavity 12 is arranged inside the housing assembly 10, and the liquid storage cavity 12 is used to store the liquid matrix that can be heated to generate the aerosol. The atomization core 20 is arranged inside the housing assembly 10, and the atomization core 20 is in liquid conduction communication with the liquid storage cavity 12, so that the liquid matrix in the liquid storage cavity 12 can flow to the atomization core 20 and be heated to form the aerosol. There is a main air passage 13 between the atomization core 20 and the mouthpiece 11, and the main air passage 13 guides the generated aerosol to the mouthpiece 11. The first seal 31 is arranged inside the housing assembly 10, and the first seal 31 is located between the mouthpiece 11 and the liquid storage cavity 12. The first seal 31 is sealingly connected to the housing assembly 10 to seal the liquid storage cavity 12 and prevent the liquid matrix in the liquid storage cavity 12 from leaking into the interior of the housing and the mouthpiece 11. A first cavity 14 communicating with the main air passage 13 is further arranged inside the housing assembly 10, wherein at least part of the boundary of the first cavity 14 is defined by the main air passage 13, the housing assembly 10, and the first seal 31. The first cavity 14 is communicated with the liquid storage cavity 12 through an auxiliary passage, so that the liquid storage cavity 12 can be communicated with the first cavity 14 through the auxiliary passage and further communicated with the main air passage 13. When the aerosol generating device 100 is in use, transportation, or storage, the main air passage 13 can be kept in communication with the liquid storage cavity 12, thereby preventing the pressure in the liquid storage cavity 12 from being too high and pressing out the liquid matrix to cause leakage, and also preventing the pressure in the liquid storage cavity 12 from being too low and sucking back the liquid matrix on the atomization core 20 to cause the atomization core 20 to dry burn.

[0025] In some embodiments, please refer to Figure 2 and Figure 4, a first through hole 311 communicating with the first cavity 14 and the liquid storage cavity 12 is formed in the first seal 31, and the first through hole 311 constitutes at least part of the auxiliary passage. By forming the first through hole 311 in the first seal 31, the liquid storage cavity 12 can be in gas conduction communication with the first cavity 14 to maintain air pressure balance. The first through hole 311 can be a through hole with the same diameter or through holes with different diameters. Further, when the first through hole 311 is a through hole with different diameters, the first through hole 311 includes a first section 3111 and a second section 3112 that are connected and communicate with each other. The first section 3111 communicates with the liquid storage cavity 12, and the second section 3112 communicates with the first cavity 14, and the diameter of the second section 3112 is larger than that of the first section 3111. By setting the first through hole 311 to have a structure where the diameter of the second section 3112 is larger than that of the first section 3111, it is convenient for the condensate formed in the first cavity 14 to flow through the first through hole 311 into the liquid storage cavity 12, avoiding the accumulation of condensate in the first cavity 14 or flowing to the mouthpiece 11 and affecting the user's suction experience. The diameter of the first section 3111 is smaller than that of the second section 3112, which can, on the basis of ensuring gas conduction communication, well reduce or prevent the liquid matrix in the liquid storage cavity 12 from leaking from the first through hole 311 into the first cavity 14.

[0026] In some embodiments, please refer to FIG. Figure 4 , the extension length L of the first section 3111 satisfies: L ≤ 3 mm. The first seal 31 is usually formed by silicone injection molding, thereby improving the sealing performance of the first seal 31. The first through hole 311 in the first seal 31 is formed by a core pin in the injection mold. Controlling the extension length of the first section 3111 to be below 3 mm can shorten the length of the core pin, thereby preventing the core pin from bending or breaking during the injection molding process.

[0027] In some embodiments, please refer to Figure 2 and Figure 5, the first seal 31 is provided with a second through hole 312 passing through, and the aerosol generating device 100 further includes a first conduit 41 and a second conduit 42, both of which are arranged inside the housing assembly 10, wherein the first conduit 41 and the second conduit 42 define a part of the boundary of the main airway 13. Specifically, the first conduit 41 is mainly arranged on the side of the first seal 31 away from the liquid storage chamber 12, one end of the first conduit 41 is communicated with the mouthpiece 11, the other end of the first conduit 41 opposite to the first conduit 41 is communicated with the second through hole 312, and the other end of the first conduit 41 at least partially abuts on the first seal 31, so that the first conduit 41 can be fixed inside the housing assembly 10. The second conduit 42 is mainly arranged in the liquid storage chamber 12, one end of the second conduit 42 is inserted into the second through hole 312, and the atomizing core 20 is arranged on the second conduit 42, and the aerosol generated by the atomizing core 20 when working flows into the second conduit 42 through the other end of the second conduit 42 opposite to the second conduit 42, enters the interior of the first conduit 41 through the second through hole 312, and then flows to the mouthpiece 11. The other end of the first conduit 41 is at least partially in contact with the first sealing member 31 to form a first gap, and the first cavity 14 is communicated with the main air passage 13 through the first gap.

[0028] In the present application, the structure of defining at least part of the boundary of the main airway 13 by splicing an independent first conduit 41 and a second conduit 42 can facilitate the assembly of components such as the first seal 31 on the one hand, and on the other hand, it is also convenient to set a first gap between the other end of the first conduit 41 and the first seal 31 to connect the first cavity 14 and the main airway 13.

[0029] In some embodiments, see Figure 5 The end of the other end of the first conduit 41 is provided with a notch groove 411 penetrating the side wall of the first conduit 41, and the notch groove 411 defines at least part of the first gap. The notch groove 411 communicates with the first cavity 14 and the main airway 13 inside the first air guide tube. It can be understood that the number of the notch grooves 411 can be one or more, and the air guiding effect of the first cavity 14 and the main airway 13 can be improved by appropriately increasing the number of notch grooves 411.

[0030] In some embodiments, see Figure 2 and Figure 5, the aerosol generating device 100 further includes a first fibrous absorbent element 50. The first fibrous absorbent element 50 is disposed inside the housing assembly 10 and on the side of the first seal 31 away from the liquid storage cavity 12. The first conduit 41 passes through the first fibrous absorbent element 50, and a second gap 51 is formed by spacing between the first fibrous absorbent element 50 and the side wall of the first conduit 41. The first cavity 14 communicates with the main airway 13 through the second gap 51 and the first gap in sequence. By disposing the first fibrous absorbent element 50 between the first seal 31 and the mouthpiece 11, the condensate formed by the aerosol adhering to the inner side wall of the first conduit 41 when the aerosol flows through the first conduit 41 can be absorbed by the first fibrous absorbent element 50, reducing or avoiding the flow of the condensate to the atomization core 20. The first fibrous absorbent element 50 can also absorb at least part of the condensate formed by the aerosol condensing in the first cavity 14, and when the liquid matrix leaks from the first through hole 311, it can be adsorbed by the first fibrous absorbent element 50, preventing the unheated liquid matrix from flowing through the first gap and the second gap 51 to the mouthpiece 11.

[0031] In some embodiments, referring to Figure 2 , the aerosol generating device 100 further includes a liquid storage medium 60. The liquid storage medium 60 is disposed in the liquid storage cavity 12. The liquid storage medium 60 is used to hold the liquid matrix in the liquid storage cavity 12 to prevent the liquid matrix from sloshing in the liquid storage cavity 12. A first relief space 61 is provided between the first seal 31 and the liquid storage medium 60. By providing the first relief space 61 between the first seal 31 and the liquid storage medium 60, on the one hand, space can be reserved to accommodate the volume of the liquid storage medium 60 in the liquid storage cavity 12 when it expands, and on the other hand, it can prevent the liquid storage medium 60 from directly abutting against the first through hole 311, so that the liquid matrix on the liquid storage medium 60 directly flows from the first through hole 311 to the first cavity 14. And when the liquid storage medium 60 directly abuts against the first through hole 311, the first through hole 311 is easily blocked, making it difficult to maintain the gas conduction connection state between the liquid storage cavity 12 and the first cavity 14. It can be understood that the liquid storage medium 60 can be a liquid storage cotton.

[0032] In some embodiments, referring to Figure 2, the aerosol generating device 100 further includes a second seal 32. The second seal 32 is disposed inside the housing assembly 10. The first seal 31 and the second seal 32 are respectively disposed at two ends of the liquid storage cavity 12 and are both hermetically connected to the housing assembly 10, thereby jointly sealing the liquid storage cavity 12. A second relief space 321 is formed by spacing between the second seal 32 and the liquid storage medium 60. The second relief space 321 can reserve space to facilitate accommodating the volume of the liquid storage medium 60 in the liquid storage cavity 12 when it expands. The first relief space 61 communicates with the second relief space 321, so that the air pressures at both ends of the liquid storage cavity 12 can be balanced. In some embodiments, the aerosol generating device 100 further includes a third conduit. The third conduit is disposed in the liquid storage cavity 12, and the third conduit connects the first relief space 61 and the second relief space 321.

[0033] In some embodiments, please refer to Figure 2 , the aerosol generating device 100 further includes a bottom cover 70. The bottom cover 70 is disposed on a side of the second seal 32 facing away from the liquid storage cavity 12, and the bottom cover 70 is detachably connected to the housing assembly 10. The second seal 32 is provided with a third through hole 322, and the third through hole 322 communicates with the main airway 13. The bottom cover 70 is provided with an air inlet passage 71. The air inlet passage 71 connects the outside to the third through hole 322, so that when the user sucks the aerosol generating device 100, the outside air can flow from the air inlet passage 71 through the third through hole 322 to the atomization core 20, and after mixing the aerosol generated at the atomization core 20, it flows to the mouthpiece 11 for the user to suck.

[0034] In some embodiments, please refer to Figure 2 , the aerosol generating device 100 further includes a plugging member 80. The plugging member 80 is detachably disposed at the mouthpiece 11. When the plugging member 80 is removed or when the plugging member 80 is broken, the mouthpiece 11 communicates the outside with the main airway 13. Using the plugging member 80 to connect the mouthpiece 11 shields the air flow between the outside and the main airway 13. This not only facilitates the airtight storage and transportation of the aerosol generating device 100, helps prevent the liquid matrix from volatilizing, being oxidized and deteriorating, but also can prevent external foreign matters such as dust from falling into the main airway 13 to contaminate the main airway 13, and can also reduce the influence of the air pressure change in the storage environment on the internal air pressure of the aerosol generating device 100.

[0035] In the aerosol generating device 100 according to an embodiment of the present application, it includes a housing assembly 10, and a mouthpiece 11 is provided on the housing assembly 10; a liquid storage cavity 12, an atomization core 20, a first seal 31 and a first cavity 14 are provided inside the housing assembly 10. The liquid storage cavity 12 is used for storing a liquid matrix; the liquid storage cavity 12 is in liquid guiding communication with the atomization core 20 to provide the liquid matrix for the atomization core 20 to atomize and generate aerosol. There is a main airway 13 between the atomization core 20 and the mouthpiece 11, and the main airway 13 is used for guiding the aerosol to the mouthpiece 11; the first seal 31 is arranged between the mouthpiece 11 and the liquid storage cavity 12 and is hermetically connected to the housing assembly 10 to prevent the liquid matrix from leaking to the mouthpiece 11; the first cavity 14 is in communication with the main airway 13; at least part of the boundary of the first cavity 14 is defined by the main airway 13, the housing assembly 10 and the first seal 31; the first cavity 14 is in communication with the liquid storage cavity 12 through an auxiliary channel. In the aerosol generating device 100 of the present application, the liquid storage cavity 12 and the main airway 13 are arranged to be in gas guiding communication through the first cavity 14 and the auxiliary channel, so that when the temperature and pressure outside the aerosol generating device 100 cause the pressure and temperature in the liquid storage cavity 12 to rise, the gas in the liquid storage cavity 12 can be discharged to the main airway 13 in time to balance the air pressure inside the liquid storage cavity 12, thereby preventing the air pressure inside the liquid storage cavity 12 from being too high and pressing the liquid matrix out of the liquid guiding connection between the liquid storage cavity 12 and the atomization core 20 and leaking.

[0036] The above are only embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. An aerosol generating device, comprising a housing assembly, wherein a nozzle is provided on the housing assembly; characterized in that: The housing assembly is provided with: A liquid storage chamber, used for storing a liquid matrix; An atomizer core, wherein the liquid storage chamber is in liquid-conducting communication with the atomizer core to provide the liquid matrix for the atomizer core to atomize and generate an aerosol, and a main airway is provided between the atomizer core and the mouthpiece, and the main airway is used to guide the aerosol to the mouthpiece; a first sealing member, disposed between the suction nozzle and the liquid storage chamber and sealingly connected to the housing assembly to prevent the liquid matrix from leaking into the suction nozzle; The first cavity is connected to the main air channel; at least part of the boundary of the first cavity is defined by the main air channel, the shell assembly and the first sealing member; the first cavity is connected to the liquid storage cavity through an auxiliary channel.

2. The aerosol generating device according to claim 1, characterized in that: The first sealing member is provided with a first through hole communicating with the first cavity and the liquid storage cavity, and the first through hole constitutes at least a part of the auxiliary channel.

3. The aerosol generating device according to claim 2, characterized in that: The first through hole includes a first section and a second section that are connected to each other. The first section is connected to the liquid storage cavity, and the second section is connected to the first cavity. The diameter of the second section is greater than the diameter of the first section.

4. The aerosol generating device according to claim 3, characterized in that: The extension length L of the first section satisfies: L≤3 mm.

5. The aerosol generating device according to claim 1, characterized in that: The first sealing member is provided with a second through hole; A first conduit and a second conduit are further provided in the housing assembly, and the first conduit and the second conduit define at least a portion of the boundary of the main airway; one end of the first conduit is communicated with the mouthpiece, and the other end of the first conduit is communicated with the second through hole, and the other end of the first conduit at least partially abuts against the first sealing member, and one end of the second conduit is inserted into the second through hole, and the aerosol generated by the atomization core flows into the second conduit through the other end of the second conduit; The first cavity is in communication with the main air passage through a first gap between an end portion of the other end of the first conduit and the first sealing member.

6. The aerosol generating device according to claim 5, characterized in that: The other end of the first conduit has a notch groove at its end portion, and the notch groove defines at least a portion of the first gap.

7. The aerosol generating device according to claim 5, characterized in that: A first fiber absorption element is also provided in the housing assembly, and the first fiber absorption element is arranged on a side of the first sealing member away from the liquid storage chamber; A second gap is formed between the first fiber absorption element and the side wall of the first conduit, and the first cavity is communicated with the main airway through the second gap and the first gap in sequence.

8. The aerosol generating device according to claim 1, characterized in that: A liquid storage medium is arranged in the liquid storage cavity, and a first clearance space is provided between the first sealing component and the liquid storage medium.

9. The aerosol generating device according to claim 8, characterized in that: A second sealing member is also provided in the housing assembly, and the second sealing member and the first sealing member are respectively provided at two ends of the liquid storage cavity, and are both sealedly connected to the housing assembly; The second sealing member is spaced apart from the liquid storage medium to form a second clearance space, and the second clearance space is communicated with the first clearance space.

10. The aerosol generating device according to claim 1, characterized in that The suction nozzle is provided with a detachably connected blocking piece, which is connected to the outside and the main airway when the blocking piece is removed or ruptured.

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