Atomizer and aerosol generating device comprising same

Abstract

The utility model relates to an atomizer and an aerosol generating device comprising the atomizer, the atomizer comprises a liquid storage cup and a base, and a storage cavity for storing an aerosol generating substrate is defined between the liquid storage cup and the base; one of the liquid storage cup and the base comprises a first welding cavity in a closed ring shape, the other one comprises a first welding rib in a closed ring shape, the first welding cavity is used for containing the first welding rib, and at least part of the side wall of the first welding cavity can be welded to the first welding rib through ultrasonic welding. Therefore, airtight mechanical connection is formed between the base and the liquid storage cup.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, and in particular to an atomizer and an aerosol generation device including the atomizer. Background Technology

[0002] An atomizer is a device capable of storing and atomizing an aerosol-generating matrix to generate an aerosol. In a typical existing atomizer, the atomizer includes a housing and a base, which are connected to the housing by a snap-fit ​​structure, thereby defining a storage cavity between the base and the housing for storing the aerosol-generating matrix.

[0003] However, this atomizer requires a seal to provide a seal between the base and the housing. During assembly, the seal needs to be assembled with both the base and the housing separately. Due to the large number of parts and the influence of assembly error consistency, there is a risk of seal failure between the base and the housing, leading to a decrease in product yield. Moreover, setting snap-fit ​​connections on the base and housing increases the complexity of the mold, resulting in higher mold costs. Utility Model Content

[0004] The purpose of this application is to provide an atomizer and an aerosol generating device including the atomizer, which can reduce the risk of seal failure between the base and the housing and improve the assembly yield of the product.

[0005] At least one embodiment of this application provides an atomizer.

[0006] It includes a liquid storage cup and a base, wherein a storage cavity for storing an aerosol generation matrix is ​​defined between the liquid storage cup and the base;

[0007] One of the liquid storage cup and the base includes a first weld cavity in a closed annular shape, and the other includes a first weld bead in a closed annular shape. The first weld cavity is used to accommodate the first weld bead, and at least a portion of the sidewall of the first weld cavity can be welded to the first weld bead by ultrasonic welding, thereby forming an airtight mechanical connection between the base and the liquid storage cup.

[0008] As an example, the first welding cavity includes a first fusion cavity and a first guide cavity communicating with the first fusion cavity outside the first fusion cavity, the end of the first weld bead passing through the first guide cavity and sinking into the first fusion cavity, and at least a portion of the sidewall of the first fusion cavity is fused with the first weld bead.

[0009] The width D1 of the first welding cavity, the width D2 of the first inlet cavity, and the width D3 of the first weld bead satisfy: D1 < D3 < D2.

[0010] As an example, the end of the first weld bead is spaced apart from the bottom of the first fusion cavity; or

[0011] The welding depth of the first weld bead in the first welding cavity is less than the depth of the first welding cavity.

[0012] As an example, the first fusion cavity gradually narrows from the outside to the inside; and / or

[0013] The first inlet cavity gradually narrows from the outside to the inside.

[0014] As an example, it also includes an atomizing core, an outlet channel, and an inlet channel disposed in the base to direct air to the atomizing core, the atomizing core being in flow communication with the reservoir to atomize the aerosol generating matrix to produce an aerosol, and the outlet channel being configured to outlet the aerosol from the atomizer.

[0015] As an example, it also includes a first electrode and a second electrode, both of which are electrically connected to the atomizing core, and the first electrode and the second electrode are fixed on the base;

[0016] The first electrode has a cavity that is fluidly connected to the outlet channel, the cavity receiving at least a portion of the atomizing core and at least a portion of the second electrode, and an insulating element is provided between the second electrode and the first electrode.

[0017] As an example, a through hole is provided on the side wall of the first electrode, the through hole is located between the second electrode and the atomizing core, and the through hole is in fluid communication with the inlet channel and the cavity.

[0018] As an example, the liquid reservoir is provided with an air intake that is fluidly connected to the outlet channel.

[0019] As an example, the base includes a first base and a second base, and the storage cavity is disposed between the first base and the liquid storage cup;

[0020] The second base is disposed on the side of the first base away from the liquid storage cup, and the inlet channel is disposed between the first base and the second base.

[0021] As an example, one of the first base and the second base includes a second welding cavity, and the other includes a second welding bead. At least one of the second welding cavity and the second welding bead is in the form of a closed ring. The second welding cavity is used to accommodate the second welding bead, and at least a portion of the sidewall of the second welding cavity can be fused with the second welding bead by ultrasonic welding, thereby forming a mechanical connection between the first base and the second base.

[0022] As an example, the second base is provided with an airflow inlet that is in fluid communication with the inlet channel, and the airflow inlet is located on the side of the second base opposite to the first base.

[0023] At least one embodiment of this application provides an aerosol generating apparatus, which includes the aforementioned atomizer and a power source electrically connected to the atomizer to provide electrical power to the atomizer.

[0024] The atomizer and aerosol generating device including the atomizer provided in the above embodiments include a first weld cavity in a closed annular shape (either the liquid reservoir or the base) and a first weld bead in a closed annular shape (the other). The first weld cavity houses the first weld bead, and at least a portion of the sidewall of the first weld cavity can be welded to the first weld bead via ultrasonic welding, thereby forming an airtight mechanical connection between the base and the liquid reservoir. Therefore, there is no need to provide a seal between the base and the liquid reservoir, thus reducing the number of components and the risk of seal failure between the base and the housing, improving the product assembly yield. Furthermore, there is no need to provide snap-fit ​​connections on the base and the liquid reservoir, thus reducing mold complexity and cost, and effectively controlling the production cost of the atomizer and the aerosol generating device including the atomizer. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art 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 scale.

[0026] Figure 1 This is an exploded schematic diagram of an aerosol generating apparatus provided in some embodiments of this application;

[0027] Figure 2 This is a schematic diagram of an atomizer provided in some embodiments of this application;

[0028] Figure 3 yes Figure 2 A sectional view;

[0029] Figure 4 This is a schematic diagram of the first base provided in some embodiments of this application;

[0030] Figure 5 This is a schematic diagram from another perspective of the first base provided in some embodiments of this application;

[0031] Figure 6 This is a cross-sectional view of the first base provided in some embodiments of this application;

[0032] Figure 7 This is a schematic diagram of the second base provided in some embodiments of this application;

[0033] Figure 8 This is a schematic diagram of a liquid storage cup provided in some embodiments of this application;

[0034] Figure 9 yes Figure 2 Another sectional view;

[0035] In the picture:

[0036] 100. Aerosol generating device;

[0037] 1. Atomizer; 11. Liquid reservoir; 111. First weld bead; 12. Base; 121. First base; 122. Second base; 1221. Airflow inlet; 123. First welding chamber; 1231. First fusion chamber; 1232. First inlet chamber; 1233. Connecting wall; 124. Second welding chamber; 125. Inlet channel; 126. Second weld bead; 13. Storage chamber; 14. Atomizing core; 15. Outlet channel; 16. Nozzle; 161. Inlet; 171. First electrode; 1711. Cavity; 1712. Through hole; 172. Second electrode; 173. Insulating component; 18. Sealing plug; 19. Liquid injection hole;

[0038] 2. Third electrode;

[0039] 3. Fourth electrode. Detailed Implementation

[0040] The technical solutions of the embodiments of this application 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 this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0041] The terms "first," "second," and "third" used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number or order of the indicated technical features. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship or movement of the components in a specific orientation (as shown in the accompanying drawings). If the specific orientation changes, the directional indication will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0042] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be intervening elements. When an element is referred to as being "connected to" another element, it can be directly connected to the other element, or there may be one or more intervening elements. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0044] Please refer to Figure 1 This application provides an embodiment of an aerosol generating device 100, which includes an atomizer 1. The atomizer 1 includes a liquid reservoir 11 and a base 12, with a storage cavity 13 defined between the liquid reservoir 11 and the base 12 for storing an aerosol generating matrix.

[0045] In some embodiments, the aerosol generating matrix is ​​liquid at room temperature. The aerosol generating matrix may comprise a liquid containing tobacco-containing substances with volatile tobacco aroma components. The aerosol generating matrix may also comprise a liquid containing non-tobacco substances. The aerosol generating matrix may comprise water, solvents, ethanol, plant extracts, fragrances, flavorings, or vitamin mixtures, etc. Fragrances may include, but are not limited to, areca nut extract, menthol, peppermint, spearmint oil, various fruit flavoring components, etc. Flavorings may contain ingredients that can provide the user with various aromas or flavors. Vitamin mixtures may be mixtures containing at least one of vitamins A, B, C, and E, but are not limited to.

[0046] In some embodiments, reference may be made to Figures 2-8 One of the liquid storage cup 11 and the base 12 includes a first weld cavity 123 in a closed annular shape, and the other includes a first weld bead 111 in a closed annular shape. The first weld cavity 123 is used to accommodate the first weld bead 111, and at least a portion of the sidewall of the first weld cavity 123 can be fused with the first weld bead 111 by ultrasonic welding, so that the weld between the liquid storage cup 11 and the base 12 has good sealing and mechanical connection.

[0047] Both the first welding cavity 123 and the first welding bead 111 are closed annular. After the first welding bead 111 is welded into the first welding cavity 123, a closed annular seal is formed at the closed annular connection between the liquid storage cup 11 and the base 12. This creates an airtight mechanical connection between the base 12 and the liquid storage cup 11, eliminating the need for an annular seal between the base 12 and the liquid storage cup 11 to provide a sealing connection. This prevents the aerosol generation matrix in the storage cavity 13 from leaking between the liquid storage cup 11 and the base 12, and also ensures a stable and good mechanical connection between the liquid storage cup 11 and the base 12.

[0048] The first welding cavity 123 may include a welding cavity with a pre-reserved shearing amount on the side wall to melt and fuse with the first weld bead 111 during the welding process, thereby connecting the liquid storage cup 11 and the base 12 to each other by shear-type ultrasonic welding.

[0049] The liquid storage cup 11 and the base 12 are connected to each other by ultrasonic welding instead of by snap-fit ​​connection. This eliminates the need for structures on the liquid storage cup 11 and the base 12 that are suitable for snap-fit ​​or threaded connection, which helps to reduce the complexity of the molds used to make the liquid storage cup 11 and the base 12, thereby reducing the development and manufacturing costs of the molds.

[0050] In some embodiments, reference may be made to Figure 6The first welding cavity 123 includes a first fusion cavity 1231 and a first guide cavity 1232 that communicates with the first fusion cavity 1231 on the outside of the first fusion cavity 1231. The first guide cavity 1232 is used to guide the first weld bead 111 into the first fusion cavity 1231, so that after ultrasonic welding is completed, the end of the first weld bead 111 can sink from the first guide cavity 1232 into the first fusion cavity 1231.

[0051] The width D2 of the first inlet cavity 1232 is greater than the width D3 of the first weld bead 111, so that the first inlet cavity 1232 can receive the first weld bead 111 and thus position the first weld bead 111 before ultrasonic welding.

[0052] Before ultrasonic welding, the first welding cavity 123 is configured to prevent the end of the first weld bead 111 from entering the first fusion cavity 1231. During ultrasonic welding, the end of the first weld bead 111 can fuse with the sidewall of the first fusion cavity 1231 and enter the first fusion cavity 1231, thus forming a larger fusion surface and sealing surface between the first weld bead 111 and the sidewall of the first welding cavity 1231. In some embodiments, the width D1 of the first fusion cavity 1231 is smaller than the width D3 of the first weld bead 111. Further, the difference ΔD between the width D3 of the first weld bead 111 and the width D1 of the first fusion cavity 1231 satisfies: 0.1mm ≤ ΔD ≤ 0.3mm; preferably, 0.15mm ≤ ΔD ≤ 0.2mm, for example, ΔD can be approximately equal to 0.17mm. ΔD can be a pre-reserved shearing amount on the sidewall of the first fusion cavity 1231. During ultrasonic welding, the melting thickness of the sidewall of the first welding cavity 1231 may not exceed ΔD. The sidewall of the first weld bead 111 may also melt, thereby allowing the sidewall of the first weld bead 111 to fuse with the sidewall of the first welding cavity 1231.

[0053] In some embodiments, the first inlet cavity 1232 has a relatively constant width. For example, the sidewall of the first inlet cavity 1232 is a vertical wall, and the sidewall of the first inlet cavity 1232 is substantially parallel to the direction in which the first weld bead 111 is inserted into the first weld cavity 123. In some embodiments, the first welding cavity 1231 has a relatively constant width. For example, the sidewall of the first welding cavity 1231 is a vertical wall, and the sidewall of the first welding cavity 1231 is substantially parallel to the direction in which the first weld bead 111 is inserted into the first weld cavity 123.

[0054] In some embodiments, reference may be made to Figure 6The first inlet cavity 1232 gradually narrows from the outside to the inside, so that the width of the first inlet cavity 1232 becomes smaller the closer it is to the first welding cavity 1231. In this embodiment, the width D2 of the first inlet cavity 1232 mentioned above can be the minimum width of the first inlet cavity 1232, or it can be the average width of the first inlet cavity 1232, or it can be the median width of the first inlet cavity 1232.

[0055] In some embodiments, reference may be made to Figure 6 The first welding cavity 1231 gradually narrows from the outside to the inside, so that the width of the first welding cavity 1231 is smaller as it gets closer to the bottom of the first welding cavity 1231. In this embodiment, the width D1 of the first welding cavity 1231 mentioned above can be the maximum width of the first welding cavity 1231, or it can be the average width of the first welding cavity 1231, or it can be the median width of the first welding cavity 1231.

[0056] In some embodiments, reference may be made to Figure 6 The sidewalls of the first inlet cavity 1232 and the first welding cavity 1231 on the same side are inclined, and the inclination or slope of the two are the same.

[0057] In some embodiments, reference may be made to Figure 6 A portion of the sidewall of the first welding cavity 123 is a connecting wall 1233, which is disposed between the sidewall of the first inlet cavity 1232 and the sidewall of the first fusion cavity 1231. Before ultrasonic welding, the connecting wall 1233 supports the end of the first weld bead 111 along a first direction to prevent the first weld bead 111 from entering the first fusion cavity 1231. The first direction may be parallel to the direction in which the first weld bead 111 is inserted into the first welding cavity 123; the angle between the first direction and the direction in which the first weld bead 111 is inserted into the first welding cavity 123 may be less than 90°. As an example, at least a portion of the connecting wall 1233 extends perpendicularly to the direction in which the first weld bead 111 is inserted into the first welding cavity 123. As an example, at least a portion of the connecting wall 1233 is inclined, and the width of the inclined connecting wall 1233 near the end of the first inlet cavity 1232 is greater than the width D3 of the first weld bead 111, while the width of the end of the inclined connecting wall 1233 near the end of the first fusion cavity 1231 is less than the width D3 of the first weld bead 111.

[0058] In some embodiments, the first weld bead 111 has a relatively constant width. In some embodiments, the width of the first weld bead 111 gradually decreases in the opposite direction to the direction in which the first weld bead 111 is inserted into the first weld cavity 123.

[0059] In some embodiments, reference may be made to Figure 3After ultrasonic welding is completed, the end of the first weld bead 111 is spaced apart from the bottom of the first fusion cavity 1231, or the welding depth H1 of the first weld bead 111 in the first fusion cavity 1231 is less than the depth H2 of the first fusion cavity 1231. This creates a clearance cavity between the end of the first weld bead 111 and the bottom of the first fusion cavity 1231. This clearance cavity can accommodate a portion of the plastic that melts during ultrasonic welding, thus preventing the molten plastic from overflowing from the first fusion cavity 123. This clearance cavity also prevents poor shrinkage of the base 12 and / or the reservoir cup 11 during ultrasonic welding.

[0060] In some embodiments, reference may be made to Figure 3 The atomizer 1 includes an atomizing core 14 for atomizing an aerosol generating matrix to generate an aerosol. The atomizing core 14 is in fluid communication with a storage chamber 13, so that the atomizing core 14 can atomize the aerosol generating matrix contained in the storage chamber 13.

[0061] In some embodiments, the atomizing core 14 may include a liquid-absorbing element and a heating element, the heating element being disposed on the liquid-absorbing element. The liquid-absorbing element may be a porous body for guiding the aerosol-generating matrix into the atomization range of the heating element. The heating element is used to heat the atomized aerosol-generating matrix, thereby generating an aerosol. The porous body may be a fiber, such as cotton fiber, polypropylene fiber, polyester fiber, or nylon fiber. The porous body may also be a porous ceramic or a porous metal; this application does not limit the structure and composition of the porous body.

[0062] In other embodiments, the atomizing core 14 may include an ultrasonic element capable of generating ultrasonic waves, which enables the atomizing core 14 to atomize the aerosol-generating matrix into an aerosol using ultrasonic waves. Of course, the atomizing core 14 may also include other elements capable of atomizing the aerosol-generating matrix into an aerosol.

[0063] In some embodiments, the atomizer 1 further includes an outlet channel 15, which can outlet the aerosol generated by the atomizing aerosol generation matrix of the atomizing core 14 from the atomizer 1.

[0064] In some embodiments, at least a portion of the atomizing core 14 is disposed in the outlet channel 15. In other embodiments (not shown), the atomizer further includes a compartment in which the atomizing core is disposed, the compartment being in communication with the inlet chamber via a liquid channel, such that the aerosol generation matrix in the inlet chamber can be transferred to the atomizing core, and the compartment being in fluid communication with a second outlet channel, such that the aerosol formed in the compartment can be outleted through the outlet channel.

[0065] In some embodiments, the atomizer 1 further includes a reservoir element (not shown) having a large number of pores capable of adsorbing a large amount of aerosol generating matrix. The reservoir element is disposed in a storage cavity, and at least partially of the aerosol generating matrix stored in the storage cavity is retained within the reservoir element, thereby preventing leakage of the aerosol generating matrix from the storage cavity. The reservoir element includes, but is not limited to, one of the following materials: cotton fiber, polypropylene fiber, polyester fiber, nylon fiber, porous ceramic material, polymer fiber, or various combinations of the above materials.

[0066] In some embodiments, reference may be made to Figure 3 The aerosol generating device 100 also includes a mouthpiece 16 with an inhalation port 161. At least a portion of the mouthpiece 16 can be held in the lips by a user, and the inhalation port 161 is positioned facing the user's mouth when the user holds the mouthpiece 16. The user inhales the aerosol generated by the atomizer 1 by sucking on the mouthpiece 16.

[0067] Furthermore, the atomizer 1 includes a mouthpiece 16, or the mouthpiece 16 of the aerosol generating device 100 is disposed on the atomizer 1.

[0068] In some embodiments, reference may be made to Figure 9 The atomizer 1 also includes an inlet channel 125, at least partially disposed in the base 12, the inlet channel 125 being used to direct air to the atomizing core 14.

[0069] In some embodiments, reference may be made to Figure 3 The base 12 can conceal the atomizing core 14, thus hiding it. The atomizer 1 also includes a first electrode 171 and a second electrode 172, which are respectively used for electrical connection to different electrodes of a power source (not shown), and the atomizing core 14 is electrically connected to the first electrode 171 and the second electrode 172. Therefore, the power source can provide electrical power to the atomizing core 14 through the first electrode 171 and the second electrode 172. The first electrode 171 and the second electrode 172 are fixed to the base 12. Thus, the base 12 can both hold the first electrode 171 and the second electrode 172 and define the inlet channel 125.

[0070] In some embodiments, the aerosol generating device 100 further includes a third electrode 2 and a fourth electrode 3, which are respectively used for electrical connection to different electrodes of the power supply. The first electrode 171 is detachably electrically connected to the third electrode 2, and the second electrode 172 is detachably electrically connected to the fourth electrode 3, so that the atomizer 1 can be a removable or replaceable component in the aerosol generating device 100.

[0071] In some embodiments, the aerosol generating device 100 further includes a power source electrically connected to the atomizer 1 to provide electrical power for the atomizer 1 to atomize the aerosol generating matrix. The power source may include any suitable battery, such as a lithium battery, a disposable battery, or a rechargeable battery.

[0072] In some embodiments, reference may be made to Figure 9 The first electrode 171 has a cavity 1711 with a fluid-connected outlet channel 15 inside. The cavity 1711 receives at least a portion of the atomizing core 14 and at least a portion of the second electrode 172, and an insulating member 173 is provided between the second electrode 172 and the first electrode 171. Thus, the first electrode 171, the second electrode 172, and the atomizing core 14 can be assembled as a whole with the base 12, which helps to simplify the manufacturing process of the atomizer 1, improve the production efficiency of the atomizer 12, and reduce the production cost of the atomizer 1.

[0073] Further, you can refer to Figure 9 A through hole 1712 is provided on the side wall of the first electrode 171. The through hole 1712 is located between the second electrode 172 and the atomizing core 14. The through hole 1712 is fluidly connected to the inlet channel 125 and the cavity 1711. Thus, the airflow trajectory from the inlet channel 125 into the cavity 1711 and towards the atomizing core 14 has at least one bend, which helps to prevent aerosols and condensate formed by aerosol condensation from flowing back to the leaking atomizer 1.

[0074] In some embodiments, reference may be made to Figure 3 and Figure 9 The base 12 includes a first base 121 and a second base 122. The storage cavity 13 is disposed between the first base 121 and the liquid storage cup 11. The second base 122 is disposed on the side of the first base 121 away from the liquid storage cup 11, and the inlet channel 125 is disposed between the first base 121 and the second base 122.

[0075] Compared to a base 12 formed by one-piece injection molding, a base 12 formed by splicing at least a first base 121 and a second base 122 is more convenient to arrange the shape and structure of the inlet channel 125 defined inside the base 12, and is more convenient to set up a liquid collection chamber inside the base 12 for collecting condensate formed by aerosol condensation, which helps to prevent condensate leakage.

[0076] In some embodiments, the second electrode 172 and the insulating member 173 disposed between the second electrode 172 and the first electrode 171 seal the cavity 1711 away from the end of the atomizing core 14.

[0077] In some embodiments, reference may be made to Figure 9The first electrode 171 is connected to the first base 121 and the second base 122, and the through hole 1712 on the side wall of the first electrode 171 is located between the first base 121 and the second base 122.

[0078] In such Figure 3 and 9 In the illustrated embodiment, at least a portion of the atomizing core 14 is located between the first base 121 and the liquid reservoir 11. In other embodiments, the atomizing core 14 may be disposed between the first base 121 and the second base 122.

[0079] In some embodiments, reference may be made to Figure 3 and 9 At least a portion of the sidewall of the first base 121 is exposed outside the reservoir 11. And / or, at least a portion of the sidewall of the second base 122 is exposed outside both the reservoir 11 and the first base 121.

[0080] In some embodiments, one of the first base 121 and the second base 122 includes a second welding cavity 124 and the other includes a second welding rib 126. The second welding cavity 124 is used to accommodate the second welding rib 126, and at least a portion of the sidewall of the second welding cavity 124 can be fused with the second welding rib 126 by ultrasonic welding, so that the weld between the first base 121 and the second base 122 has good mechanical connection.

[0081] The second welding cavity 124 may include a welding cavity with a pre-reserved shearing amount on the side wall to melt and fuse with the second welding bead 126 during the welding process, thereby the first base 121 and the second base 122 are connected to each other by shear-type ultrasonic welding.

[0082] The first base 121 and the second base 122 are connected to each other by welding instead of by snap-fit. This eliminates the need for structures on the first base 121 and the second base 122 that are suitable for snap-fit ​​or threaded connections, thus reducing the complexity of the molds used to manufacture the first base 121 and the second base 122 and reducing the development and manufacturing costs of the molds.

[0083] The second weld cavity 124 may have the same structural features as the first weld cavity 124. The second weld bead 126 may have the same structural features as the first weld bead 111.

[0084] In some embodiments, at least one of the second weld cavity 124 and the second weld bead 126 is a closed ring. However, this is not a limitation. In other embodiments (not shown), the second weld cavity may include multiple weld cavities, with adjacent weld cavities spaced apart from each other; correspondingly, the second weld bead may include multiple weld beads, with adjacent weld beads spaced apart from each other.

[0085] In such Figures 4-8In the embodiment shown, the end of the liquid storage cup 11 is provided with the first weld bead 111, the second base 122 is provided with the second weld bead 126, and the first weld cavity 123 and the second weld cavity 124 are disposed opposite to each other on the first base 121.

[0086] In some embodiments, reference may be made to Figure 9 The second base 122 is provided with an airflow inlet 1221 that is in fluid communication with the inlet channel 125, and the airflow inlet 1221 is located on the side of the second base 122 facing away from the first base 121. In other embodiments, the airflow inlet is located on the side wall of the second base.

[0087] In some embodiments, reference may be made to Figure 8 and 9 The atomizer 1 also includes a sealing plug 18. The reservoir cup 11 has an injection port 19 that is fluidly connected to the storage chamber, and the sealing plug 18 seals the injection port 19. When the injection port 19 is exposed, the aerosol generating matrix can be injected into the storage chamber 13. After the sealing plug 18 seals the injection port 19, leakage of the aerosol generating matrix through the injection port 19 is prevented.

[0088] It should be noted that the preferred embodiments of this application are given in the specification and accompanying drawings, but are not limited to the embodiments described in this specification. Furthermore, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An atomizer characterized by, The storage cup and the base define a storage cavity for storing an aerosol generating substrate therebetween; One of the storage cup and the base comprises a first welding cavity in a closed ring shape, and the other comprises a first welding rib in a closed ring shape, the first welding cavity is used for accommodating the first welding rib, and at least part of the side wall of the first welding cavity is capable of being fused with the first welding rib by ultrasonic welding, so that airtight mechanical connection is formed between the base and the storage cup.

2. The atomizer of claim 1, wherein, The first welding cavity comprises a first fusion cavity and a first introduction cavity in communication with the first fusion cavity outside the first fusion cavity, and the end of the first welding rib is immersed into the first fusion cavity through the first introduction cavity, and at least part of the side wall of the first fusion cavity is fused with the first welding rib; The width D1 of the first fusion cavity, the width D2 of the first introduction cavity and the width D3 of the first welding rib satisfy: D1 < D3 < D2.

3. The atomizer of claim 2, wherein, The end of the first welding rib is spaced apart from the bottom of the first fusion cavity; or The welding depth of the first welding rib in the first fusion cavity is less than the depth of the first fusion cavity.

4. The atomizer of claim 2, wherein, The first fusion cavity is gradually tapered from outside to inside; and / or The first introduction cavity is gradually tapered from outside to inside.

5. The atomizer of claim 1, wherein, It also comprises an atomizing core, an outlet channel and an inlet channel arranged in the base to guide air to the atomizing core, the atomizing core is in flow communication with the storage cavity to atomize the aerosol generating substrate to generate aerosol, and the outlet channel is configured to guide the aerosol out of the atomizer.

6. The atomizer of claim 5, wherein, It also comprises a first electrode and a second electrode which are both electrically connected to the atomizing core, and the first electrode and the second electrode are fixed on the base; The first electrode has a cavity inside which is in fluid communication with the outlet channel, the cavity receives at least part of the atomizing core and at least part of the second electrode, and the second electrode has an insulating member between it and the first electrode.

7. The atomizer of claim 6, wherein, A through hole is formed in the side wall of the first electrode, the through hole is located between the second electrode and the atomizing core, and the through hole is in fluid communication with the inlet channel and the cavity.

8. The atomizer of claim 5, wherein, An air inlet is arranged on the storage cup which is in fluid communication with the outlet channel.

9. The atomizer of any of claims 5-8, wherein, The base comprises a first base and a second base, and the storage cavity is arranged between the first base and the storage cup; The second base is arranged on the side of the first base away from the storage cup, and the inlet channel is arranged between the first base and the second base.

10. The atomizer of claim 9, wherein, One of the first base and the second base comprises a second welding cavity, and the other comprises a second welding rib, at least one of the second welding cavity and the second welding rib is in a closed ring shape, the second welding cavity is used for accommodating the second welding rib, and at least part of the side wall of the second welding cavity is capable of being fused with the second welding rib by ultrasonic welding, so that mechanical connection is formed between the first base and the second base.

11. The atomizer of claim 10, wherein, An air inlet is arranged on the second base which is in fluid communication with the inlet channel, and the air inlet is arranged on the side of the second base away from the first base.

12. An aerosol-generating device comprising: The nebulizer of any one of claims 1-11, further comprising a power source electrically connected to the nebulizer to provide electrical power to the nebulizer.

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