Piston assembly, pump module comprising the piston assembly, and aerosol-generating device

Abstract

The present application relates to a piston assembly, a pump module comprising the piston assembly, and an aerosol-generating device, the piston assembly comprising: a piston head having first and second opposing exposed faces, the first exposed face being located in a first direction from the second exposed face; and a valve provided on the piston head, the valve being configured to open when the piston head is moved in the first direction or the second direction, thereby allowing fluid to pass through the piston head such that the first exposed face is in fluid communication with the second exposed face, the first direction and the second direction being opposite.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, and in particular to a piston assembly, a pump module including the piston assembly, and an aerosol generation device. Background Technology

[0002] An aerosol generating device is a device capable of atomizing a liquid matrix to generate aerosols. An exemplary aerosol generating device exists, including an atomizing module, a pumping assembly, and a supply chamber for storing the liquid matrix. The atomizing module includes a storage chamber for storing the liquid matrix and an atomizing core for atomizing the liquid matrix. The pumping assembly includes a piston and a pump chamber. The pump chamber expands when the piston moves from a first position to a second position, thereby drawing the liquid matrix from the supply chamber into the pump chamber. When the piston moves from the second position to the first position, it contracts, thereby discharging the liquid matrix from the supply chamber into the storage chamber. However, the pump chamber is sealed. Therefore, when the piston moves from the first position to the second position, the pump chamber section on the first side of the piston expands, while the pump chamber section on the second side of the piston contracts. The first and second sides are opposite to each other. The contraction of the pump chamber section on the second side of the piston causes an increase in pressure in that section, resulting in the piston needing to overcome significant resistance to continue moving to the second position. Similarly, when the piston moves from the first position to the second position, the piston also needs to overcome significant resistance to continue moving to the first position. Utility Model Content

[0003] The purpose of this application is to provide a piston assembly and a pump module and aerosol generating device including the piston assembly, which helps to reduce the operating resistance of the pump module and aerosol generating device adapted to the piston assembly.

[0004] At least one embodiment of this application provides a piston assembly, and the piston assembly includes;

[0005] The piston head has a first exposed surface and a second exposed surface disposed opposite to each other, the first exposed surface being located in a first direction of the second exposed surface; and

[0006] A valve is disposed on the piston head and is configured to open when the piston head moves in a first direction or a second direction, so that fluid can pass through the piston head to make the first exposed surface and the second exposed surface in fluid communication, wherein the first direction and the second direction are opposite.

[0007] As an example, the piston head has a connecting hole that fluidly connects the first exposed surface and the second exposed surface when the valve is open, and seals the connecting hole when the valve is closed.

[0008] As an example, the valve includes a fixed portion fixed to the piston head and a movable portion for sealing the communication hole, the movable portion being connected to the fixed portion;

[0009] The movable part is configured to undergo displacement or elastic deformation when the piston head moves in a first direction or a second direction, thereby causing the valve to open.

[0010] As an example, the movable part is configured to seal the opening of the connecting hole toward the first exposed surface when the piston head moves in a first direction, and to move or elastically deform in the first direction when the piston head moves in a second direction, thereby opening the valve.

[0011] As an example, the movable part is configured to seal the opening of the connecting hole toward the second exposed surface when the piston head moves in the second direction, and to move or elastically deform in the second direction when the piston head moves in the first direction, thereby opening the valve.

[0012] As an example, there are multiple connecting holes, and the multiple connecting holes can be sealed by the same moving part.

[0013] As an example, the device has a plurality of said connecting holes and a plurality of said movable parts, the plurality of said movable parts being configured to seal the plurality of said connecting holes one-to-one.

[0014] As an example, multiple active parts are connected to the same fixed part.

[0015] As an example, the piston head has a fixing hole, and the fixing part is at least partially interference-fitted into the fixing hole.

[0016] As an example, the piston head includes a first base and a sealing ring disposed around the first base, and the valve is disposed on the base.

[0017] As an example, the valve also includes a piston rod connected to the second exposed surface of the piston head, with the valve and the piston rod arranged side by side.

[0018] As an example, the piston rod is connected to the central region of the piston head, and the valve is positioned off-center from the central region of the piston head.

[0019] At least one embodiment of this application provides a pump module, which includes the piston assembly and a main body having a pump chamber inside. The piston head is movably disposed in the pump chamber and divides the pump chamber into a first chamber and a second chamber located on opposite sides of the piston head. The main body is further provided with a first guide port for introducing or exporting fluid into or out of the first chamber and a second guide port for introducing or exporting fluid into or out of the second chamber. The piston head is configured to drive fluid in the first chamber through the piston head into the second chamber by movement, or to drive fluid in the second chamber through the piston head into the first chamber.

[0020] At least one embodiment of this application provides an aerosol generating apparatus, and the aerosol generating apparatus includes;

[0021] The storage module has a first storage chamber inside for storing the liquid matrix;

[0022] The atomizing module includes a second storage chamber for storing a liquid matrix and an atomizing core for atomizing the liquid matrix to generate an aerosol; and

[0023] A pump module includes a pump chamber and a piston assembly. The piston head is movably disposed in the pump chamber and divides the pump chamber into a first chamber and a second chamber located on opposite sides of the piston head. The first chamber is used to communicate with a first storage chamber, and the second chamber is used to communicate with a second storage chamber. The pump module is configured to drive fluid in the first chamber through the piston head into the second chamber, or drive fluid in the second chamber through the piston head into the first chamber, by moving the piston head.

[0024] The piston assembly, pump module including the piston assembly, and aerosol generating device provided in the above embodiments have a valve on the piston head that can open when the piston head moves in a first or second direction, allowing fluid to pass through the piston head and enabling fluid communication between the first and second exposed surfaces of the piston head, thereby allowing fluid to be transferred from one side of the piston head to the other. The pump module adapted to the piston assembly includes a main body with a first and a second guide port. The first and second chambers are connected through the piston head, and the corresponding guide port can discharge the fluid in the corresponding chamber when the chamber contracts, thereby reducing the operating resistance of the piston head. Similarly, the operating resistance of the aerosol generating device adapted to the piston assembly can be reduced. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar parts or portions are generally identified by similar reference numerals. In the drawings, the parts or portions are not necessarily drawn to scale.

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

[0027] Figure 2 This is a schematic diagram of the piston head moving to a second position along a first direction, provided in some embodiments of this application;

[0028] Figure 3 This is a schematic diagram of the piston head moving to a first position along a second direction in an aerosol generating apparatus provided in some embodiments of this application;

[0029] Figure 4 This is a schematic diagram of the combination of the piston head and the second valve provided in some embodiments of this application;

[0030] Figure 5 This is an exploded view of the piston head and the second valve provided in some embodiments of this application;

[0031] Figure 6 This is an exploded schematic diagram of the connection assembly and the first and third valves provided in some embodiments of this application;

[0032] Figure 7 This is a schematic diagram of the piston head moving to a second position along a first direction, provided in some other embodiments of this application;

[0033] Figure 8 This is a schematic diagram of the piston head moving to a first position along a second direction in an aerosol generating apparatus provided in other embodiments of this application;

[0034] Figure 9 This is a schematic diagram of the combination of the piston head and the second valve provided in other embodiments of this application;

[0035] Figure 10 This is an exploded view of the piston head and second valve provided in other embodiments of this application;

[0036] Figure 11 These are schematic diagrams of atomizing modules provided in some embodiments of this application;

[0037] Figure 12 This is a schematic diagram of a pump module provided in some embodiments of this application;

[0038] In the picture:

[0039] 100. Aerosol generating device;

[0040] 1. Storage module; 11. First storage cavity; 12. Fluid conduit;

[0041] 2. Atomizing module; 21. Second storage chamber; 22. Atomizing core; 23. Holding tube; 231. Liquid guide hole; 24. Liquid absorption medium; 25. Second housing; 251. First through hole; 26. Guide rail;

[0042] 3. Pump module; 31. Main body; 311. Pump chamber; 3111. First chamber; 3112. Second chamber; 312. Annular sidewall; 32. Piston head; 321. Second connecting hole; 322. Second fixing hole; 323. First base; 324. Sealing ring; 33. Piston rod; 34. Connecting assembly; 341. First connecting hole; 342. First fixing hole; 343. Third connecting hole; 344. Third fixing hole Hole; 351 / 351′, First sidewall; 3511′, Third through hole; 3512, First groove; 3513, Second groove; 3514, Fifth through hole; 352, Second sidewall; 353, First hollow tube; 354 / 354′, Sealing gasket; 355, Second hollow tube; 36, Operating component; 37, Reset component; 38, First housing; 39, Sliding part; 3a, First guide port; 3b, Second guide port;

[0043] 4. Suction nozzle; 41. Air outlet; 51 / 51′, First valve; 511 / 511′, First fixed part; 512 / 512′, First movable part; 52 / 52′, Second valve; 521 / 521′, Second fixed part; 522 / 522′, Second movable part; 53 / 53′, Third valve; 531 / 531′, Third fixed part; 532 / 532′, Third movable part; 61 / 61′, First channel; 62 / 62′, Second channel. Detailed Implementation

[0044] 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.

[0045] 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.

[0046] 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.

[0047] It should be noted that when a part is referred to as being "fixed to" another part, it can be directly on the other part or there may be an intermediate part. When a part is referred to as being "connected to" another part, it can be directly connected to the other part, or there may be one or more intermediate parts present simultaneously. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0048] Please refer to Figure 1 , Figure 2 and Figure 7 This application provides an aerosol generating device 100, which includes a storage module 1, an atomizing module 2, and a pump module 3. The storage module 1 has a first storage chamber 11 for storing a liquid matrix. The atomizing module 2 includes a second storage chamber 21 for storing the liquid matrix and an atomizing core 22 for atomizing the liquid matrix to generate an aerosol. The storage module 1, the atomizing module 2, and the pump module 3 can be combined with each other, and after the three are combined, the fluid can circulate among the storage module 1, the atomizing module 2, and the pump module 3.

[0049] The liquid matrix is ​​liquid at room temperature. In some embodiments, the liquid matrix may comprise a liquid containing tobacco-containing substances with volatile tobacco aroma components. The liquid matrix may also comprise a liquid containing non-tobacco substances. The liquid 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 fragrances or flavors. Vitamin mixtures may be mixtures containing at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but are not limited to.

[0050] In some embodiments, the atomizing core 22 includes a liquid absorption assembly and a heating element, wherein the liquid absorption assembly is used to guide the liquid matrix to the heating element, thereby enabling at least a portion of the liquid matrix in the liquid absorption assembly to atomize and generate an aerosol under the heat released by the heating element.

[0051] The liquid absorption assembly may include a porous body. The porous body can be a fiber, such as cotton fiber, polypropylene fiber, polyester fiber, or nylon fiber. The porous body can also be porous ceramic or porous metal; this application does not limit the structure and composition of the porous body.

[0052] In some embodiments, the atomizing core 22 includes an ultrasonic element capable of generating ultrasonic waves, which enables the atomizing core 22 to atomize a liquid matrix into an aerosol. Of course, the atomizing core 22 may also include other elements capable of atomizing a liquid matrix into an aerosol, such as a nozzle capable of turning the liquid matrix into a mist.

[0053] In some embodiments, the aerosol generating device 100 is an electrically operated aerosol generating device, whereby the atomizing core 22 requires electrical power to atomize the liquid matrix and generate an aerosol. Furthermore, the aerosol generating device 100 also includes a power module (not shown) capable of providing electrical power to the atomizing core 22 to enable it to atomize the liquid matrix and generate an aerosol. The power module may include any suitable battery, such as a lithium battery, a disposable battery, or a rechargeable battery.

[0054] In some embodiments, the atomizing module 2 further includes a retaining tube 23, which can guide the aerosol generated by the atomizing liquid matrix by the atomizing core 22 to the air outlet of the atomizing module 2, so that the aerosol can flow out of the atomizing module 2 through the air outlet.

[0055] In some embodiments, at least a portion of the atomizing core 22 is disposed in the retaining tube 23. Further, the retaining tube 23 extends longitudinally within the second storage cavity 21. In other embodiments, the atomizing module further includes a compartment (not shown) in which the atomizing core is disposed. The compartment is in communication with the second storage cavity 21 via a liquid channel, allowing the liquid matrix in the second storage cavity 21 to be transferred to the atomizing core. The compartment is in fluid communication with the retaining tube, allowing the aerosol formed in the compartment to be discharged through the retaining tube.

[0056] In some embodiments, the atomizing module 2 further includes a liquid storage element (not shown), which has a large number of pores and is capable of adsorbing a large amount of liquid matrix. The liquid storage element is disposed in the storage cavity, and at least partially of the liquid matrix stored in the storage cavity is retained in the liquid storage element, thereby preventing the liquid matrix from leaking from the second storage cavity. The liquid storage 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.

[0057] In some embodiments, the wall of the holding tube 23 is provided with a liquid guiding hole 231 that connects the second storage cavity 21 and the atomizing core 22. The liquid guiding hole 231 can guide the liquid matrix in the second storage cavity 21 to the atomizing core 22 for atomization to generate an aerosol. At least a portion of the atomizing core 22 may be disposed in the holding tube 23.

[0058] Furthermore, the retaining tube 23 is surrounded by the second storage cavity 21. The atomizing module 2 also includes a liquid-absorbing medium 24 disposed within the retaining tube 23. The atomizing core 22 is disposed inside the liquid-absorbing medium 24. The liquid-absorbing medium 24 is configured to absorb the liquid matrix in the second storage cavity 21 through the liquid guiding hole 231 and conduct at least a portion of the absorbed liquid matrix to the atomizing core 22 for atomization. The liquid-absorbing medium 24 can store the liquid matrix, thereby helping to prevent the atomizing core 22 from burning dry.

[0059] In some embodiments, reference may be made to Figure 1 The aerosol generating device 100 also includes a mouthpiece 4 having an air outlet 41, at least a portion of which can be held in the mouth by a user, and the mouthpiece 4 is used to introduce aerosols into the user's oral cavity.

[0060] Furthermore, the atomizing module 2 includes a nozzle 4, or the nozzle 4 of the aerosol generating device is disposed on the atomizing module 2. Even further, the nozzle 4 is integrally formed with the second housing 25 of the atomizing module 2.

[0061] In some embodiments, the first storage chamber 11, the second storage chamber 21, and the pump module 3 are sequentially connected by a pipeline to form a closed circulation loop. Further, the pump module 3 is configured to drive fluid to circulate between the storage module 1, the atomizing module 2, and the pump module 3 during operation. The pipeline may include a conduit independent of the first storage chamber 11, the second storage chamber 21, and the pump module 3, or the pipeline may include a channel disposed within or formed inside the pump module 3.

[0062] As an example, you can refer to Figure 2 and Figure 3 When the pump module 3 is running, the pump module 3 can inject at least a portion of the fluid inside into the first storage chamber 11, thereby increasing the air pressure in the first storage chamber 11. Under the air pressure difference between the first storage chamber 11 and the second storage chamber 21, the fluid in the first storage chamber 11 can flow into the second storage chamber 21, and at least a portion of the fluid in the second storage chamber 21 can flow into the pump module 3, thereby causing the fluid to circulate between the storage module 1, the atomizing module 2 and the pump module 3. For example, when the aerosol generating device 100 is in the first operating state, after the pump module 3 injects at least part of its internal gas into the first storage chamber 11, the gas pressure in the first storage chamber 11 is greater than the gas pressure in the second storage chamber 21. Then, the liquid matrix in the first storage chamber 11 automatically enters the second storage chamber 21, and the gas in the second storage chamber 21 can flow into the pump module 3. Then, as the pump module 3 continues to operate, at least a portion of the gas obtained by the pump module 3 from the second storage chamber 21 can flow into the first storage chamber 11 to compensate for the decrease in gas pressure in the first storage chamber 11 due to the reduction of liquid matrix.

[0063] Alternatively, as an example, see [reference needed]. Figure 7 and Figure 8 When the pump module 3 is running, it can extract at least a portion of the fluid from the first storage chamber 11 and then inject the extracted fluid into the second storage chamber 21. When the pressure drops due to the extraction of fluid from the first storage chamber 11, the fluid in the second storage chamber 21 can flow into the first storage chamber 11, thereby circulating the fluid between the storage module 1, the atomizing module 2, and the pump module 3. For example, when the aerosol generating device 100 is in the first operating state, the pump module 3 extracts at least a portion of the liquid matrix from the first storage chamber 11 and then transfers the extracted liquid matrix to the second storage chamber 21. The gas in the second storage chamber 21 then automatically flows into the first storage chamber 11 based on the pressure difference to compensate for the pressure drop in the first storage chamber 11 caused by the reduction of the liquid matrix.

[0064] It should be noted that the fluid is a flowable substance; for example, the fluid may include liquids or gases. The fluid circulates among the storage module 1, the atomizing module 2, and the pump module 3, mainly referring to the alternating flow of gas and liquid in this circulation system, so that the flow trajectories of the liquid and the gas can be combined to form a loop, preferably a closed loop.

[0065] In some embodiments, the pump module 3 includes a driving element for driving the flow of a liquid matrix. The driving element is located on a closed loop formed by the first storage chamber 11, the second storage chamber 21, and the pump module 3. Movement of the driving element can drive the liquid matrix to transfer between the first storage chamber 11 and the second storage chamber 21. Preferably, the liquid matrix or fluid can circulate unidirectionally in this loop.

[0066] In some embodiments, the pump module 3 includes a driving element for driving the flow of a liquid matrix. One side of the driving element has a first transmission path between it and the second storage cavity 21, and the other side of the driving element has a second transmission path between it and the second storage cavity 21. The first storage cavity 11 is located on the first transmission path or the second transmission path. The driving element is configured to drive the liquid matrix and air to form a circulating flow between the pump module 3 and the second storage cavity 21 through the first transmission path and the second transmission path.

[0067] The fluid in the first storage cavity 11 can flow into the second storage cavity 21 through the first transmission path, and the fluid in the second storage cavity 21 can flow out of the second storage cavity 21 through the second transmission path.

[0068] As an example, when the aerosol generating device 100 is in its first operating state, during the operation of the pump module 3, the gas in the pump module 3 can flow into the first storage chamber 11, thereby increasing the gas pressure in the first storage chamber 11. The liquid matrix in the first storage chamber 11 can flow into the second storage chamber 21 under the pressure difference between the first storage chamber 11 and the second storage chamber 21, increasing the amount of liquid matrix in the second storage chamber 21. The gas in the second storage chamber 21 can flow into the pump module 3 to reduce the gas pressure in the second storage chamber 21, preventing the liquid matrix in the second storage chamber 21 from leaking through the atomizing core 22. The length of the first transmission path includes the sum of the path length of the gas flowing from the pump module 3 into the first storage chamber 11 and the path length of the liquid matrix flowing from the first storage chamber 11 into the second storage chamber 21. The length of the second transmission path includes the path length of the gas flowing from the second storage chamber 21 into the pump module 3. The first transmission path may include... Figure 2 The flow path indicated by the solid arrow in the middle, the second transmission path may include Figure 2The flow path is indicated by the dashed arrow. It should be noted that when the fluid flows along the first transmission path, the fluid in pump module 3 can first flow into the first storage chamber 11, and then the fluid in the first storage chamber 11 can flow into the second storage chamber 21. Alternatively, the fluid in pump module 3 can flow into the first storage chamber 11 simultaneously with the fluid in the first storage chamber 11 flowing into the second storage chamber 21. Or, the fluid in the first storage chamber 11 can flow into the second storage chamber 21 first, and then the fluid in pump module 3 can flow into the first storage chamber 11.

[0069] As an example, when the aerosol generating device 100 is in its first operating state, during the operation of the pump module 3, the pump module 3 can extract the liquid matrix from the first storage chamber 11, thereby reducing the gas pressure in the first storage chamber 11. The pump module 3 can then transport at least a portion of the liquid matrix extracted from the first storage chamber 11 to the second storage chamber 21, thereby increasing the liquid matrix in the second storage chamber 21. The first storage chamber 11 can draw gas from the second storage chamber 21 based on the pressure difference between it and the second storage chamber 21, thereby both reducing the gas pressure in the second storage chamber 21 and preventing or reducing the degree of negative pressure in the first storage chamber 11. The length of the first transmission path includes the path length of the fluid flowing from the pump module 3 into the second storage chamber 21. The length of the second transmission path includes the sum of the path length of the gas flowing from the second storage chamber 21 into the first storage chamber 11 and the path length of the liquid matrix flowing from the first storage chamber 11 into the pump module 3. The first transmission path may include... Figure 8 The flow path indicated by the solid arrow in the middle, the second transmission path may include Figure 8 The flow path is indicated by the dashed arrow. It should be noted that when the fluid flows along the second transmission path, the fluid in the second storage chamber 21 can first flow into the first storage chamber 11, and then the fluid in the first storage chamber 11 can flow into the pump module 3. Alternatively, the fluid in the second storage chamber 21 can flow into the first storage chamber 11 simultaneously with the fluid in the first storage chamber 11 flowing into the pump module 3. Or, the fluid in the first storage chamber 11 can first flow into the pump module 3, and then the fluid in the second storage chamber 21 can flow into the first storage chamber 11.

[0070] It should be noted that during fluid flow, the fluid transfer time between at least two modules may or may not have a sequential order. Whether there is a sequential order or not, it is consistent with the inventive concept of this application and falls within the protection scope of the claims of this application.

[0071] Based on at least one of the above embodiments, the length of the second transmission path is less than or equal to the length of the first transmission path.

[0072] In some embodiments, the conduit between the second storage cavity 21 and one side of the actuating element has a first transmission length, and the conduit between the second storage cavity 21 and the other side of the actuating element has a second transmission length, wherein the second transmission length is less than or equal to the first transmission length. Further, the liquid matrix in the first storage cavity 11 may flow into the second storage cavity 21 at least partially along the longer conduit between the second storage cavity 21 and the actuating element.

[0073] In the fluid circulation loop formed by storage module 1, atomizing module 2, and pump module 3, the length of the second transmission path is less than or equal to the length of the first transmission path. This facilitates the rapid discharge of gas from the second storage chamber 21 to the pump module 3 or the first storage chamber 11, thereby improving the response speed of the first storage chamber 11 and enabling it to discharge the liquid matrix more quickly. This, in turn, helps to increase the speed at which the liquid matrix is ​​injected into the second storage chamber 21. It is understood that the shorter the length of the second transmission path compared to the first transmission path, the more effective it is in increasing the speed at which the liquid matrix is ​​injected into the second storage chamber 21.

[0074] The length of the second transmission path is less than or equal to the length of the first transmission path. As the liquid matrix increases, the second storage cavity 21 can quickly discharge the gas, so that the gas pressure in the second storage cavity 21 can decrease relatively quickly. It can also relatively slow down the speed at which the liquid matrix in the first storage cavity 11 enters the second storage cavity, so that the speed of the increase in gas pressure in the second storage cavity 21 is slowed down. This can prevent the increase in gas pressure in the second storage cavity 21 from causing the liquid matrix to leak through the atomizing core.

[0075] In some embodiments, a first flow path and a second flow path are provided between the first storage cavity 11 and the second storage cavity 21. The first flow path, the first storage cavity 11, the second flow path and the second storage cavity 21 are sequentially connected to form a closed loop. The driving element that can drive the fluid flow is located in the first flow path or the second flow path.

[0076] In some embodiments, the actuating element is configured to be movable in a first direction and in a second direction, wherein fluid is supplied through the actuating element when it moves in the second direction. Specifically, when the actuating element moves in the first direction, at least a portion of the fluid in the first storage cavity 11 or the second storage cavity 21 flows into the pump module 3 from one side of the actuating element, and at least a portion of the fluid in the pump module 3 flows out from the other side of the actuating element. When the actuating element moves in the second direction, the fluid in the pump module 3 can pass through the actuating element from one side of the actuating element and flow into the other side of the actuating element. The first and second directions may be opposite.

[0077] In some embodiments, the pump module 3 includes a first chamber 3111, a second chamber 3112, and a piston head 32, wherein at least a portion of the piston head 32 constitutes a pushing element, or the pushing element includes the piston head 32. The first chamber 3111 and the second chamber 3112 may be located on opposite sides of the piston head 32 or the pushing element, respectively.

[0078] In such Figure 2 and Figure 3 In the embodiment shown, the first transmission path is located between the second storage cavity 21 and the first chamber 3111, and the second transmission path is located between the second storage cavity 21 and the second chamber 3112.

[0079] In some embodiments, reference may be made to Figure 2 and Figure 3 When the piston head 32 moves in the first direction, the fluid flows from the first chamber 3111, the first storage chamber 11, the second storage chamber 21, to the second chamber 3112. For example, when the aerosol generating device 100 is in the first operating posture, when the piston head 32 moves in the first direction, the gas in the first chamber 3111 is injected into the first storage chamber 11 under the action of the piston head 32, increasing the gas pressure in the first storage chamber 11. Then, the liquid matrix in the first storage chamber 11 flows into the second storage chamber 21 under the action of the pressure difference, and the gas in the second storage chamber 21 flows into the second chamber 3112. Preferably, the time when the gas in the second storage chamber 21 begins to flow into the second chamber 3112 is no later than the time when the liquid matrix in the first storage chamber 11 flows into the second storage chamber 21.

[0080] When the piston head 32 moves in the second direction, the fluid in the second chamber 3112 flows into the first chamber 3111, thereby ensuring that the first chamber 3111 again has sufficient fluid. For example, when the aerosol generating device 100 is in the first operating posture, when the piston head 32 moves in the second direction, at least a portion of the gas obtained from the second storage chamber 21 in the second chamber 3112 flows into the first chamber 3111, ensuring that the first chamber 3111 has sufficient gas. Thus, when the piston head 32 moves in the first direction again, the first chamber 3111 can continue to inject gas into the first storage chamber 11 to increase the gas pressure in the first storage chamber 11.

[0081] Furthermore, the aerosol generating device 100 or pump module 3 also includes a first valve 51 disposed between the first storage cavity 11 and the first chamber 3111, and a second valve 52 disposed between the first chamber 3111 and the second chamber 3112. The first chamber 3111 and the second chamber 3112 can be selectively connected through the second valve 52.

[0082] When the piston head 32 moves in the first direction, the first valve 51 opens and the second valve 52 closes, so that the first chamber 3111 injects fluid into the first storage chamber 11 to increase the air pressure in the first storage chamber 11 and to isolate the first chamber 3111 and the second chamber 3112.

[0083] When the piston head 32 moves in the second direction, the second valve 52 opens and the first valve 51 closes, so that the fluid in the second chamber 3112 can flow into the first chamber 3111, and isolate the first chamber 3111 from the first storage chamber 11, so as to prevent the fluid in the second chamber 3111 from being injected into the first storage chamber 11 through the first chamber 3111, and to enable the first chamber 3111 to store the fluid from the second chamber 3112.

[0084] When the aerosol generating device 100 is in the first operating posture, when the piston head 32 moves in the second direction, the first chamber 3112 can store gas from the second chamber 3112, and when the piston head 32 moves in the first direction, the first chamber 3111 can inject at least a portion of the gas stored therein into the first storage chamber 11.

[0085] In some embodiments, reference may be made to Figure 2 and Figure 3 The aerosol generating device 100 or pump module 3 further includes a third valve 53 disposed between the first storage chamber 11 and the second storage chamber 21. The third valve 53 is configured to open when the pressure on the side facing the first storage chamber 11 is greater than the pressure on the side facing away from the first storage chamber 11, allowing fluid in the first storage chamber 11 to flow into the second storage chamber 21. Thus, the third valve 53 can remain closed before fluid is injected into the first storage chamber 11 from the first chamber 3111, or when the storage module 1 is stored separately from the atomizing module 2, thereby preventing leakage of the liquid matrix in the first storage chamber 11.

[0086] In some embodiments, reference may be made to Figure 2 and Figure 3 The third valve 53 opens when the piston head 32 moves in the first direction.

[0087] In some embodiments, reference may be made to Figure 2 , Figure 3 and Figure 11The atomizing module 2 has a first through hole 251 and a second through hole 252 for communicating with the second storage chamber 21. The first through hole 251 and the second chamber 3112 are connected through a first channel 61, and the second through hole 252 and the first storage chamber 11 are connected through a second channel 62. Thus, fluid in the second storage chamber 21 can flow into the first channel 61 through the first through hole 251, and then into the second chamber 3112 through the first channel 61. Fluid in the first storage chamber 11 can flow into the second through hole 252 through the second channel 62, and then into the second storage chamber 21.

[0088] Furthermore, at least one of the first channel 61 and the second channel 62 is disposed inside the pump module 3. Preferably, both the first channel 61 and the second channel 62 are disposed inside the pump module 3. Furthermore, when the atomizing module 2 and the pump module 3 are combined, the atomizing module 2 and the pump module 3 can be directly connected, and there is no need to provide a flexible tube connecting the first through hole 251 and the first channel 61 between the atomizing module 2 and the pump module 3, nor is it necessary to provide a flexible tube connecting the second through hole 252 and the second channel 62 between the atomizing module 2 and the pump module 3. This facilitates the combination of the atomizing module 2 and the pump module 3.

[0089] The third valve 52 can be installed on the pump module 3 and located in the second channel 62, or the third valve 53 can be installed on the atomizing module 2 corresponding to the second through hole 252.

[0090] In some embodiments, reference may be made to Figure 2 and Figure 3 The storage module 2 includes a fluid conduit 12 extending into and communicating with the first storage cavity 11. When the piston head 32 moves in the first direction, the second through hole 252 and the fluid conduit 12 are connected through the second channel 62, so that the fluid in the first storage cavity 11 can flow into the second storage cavity 21 sequentially through the fluid conduit 12, the second channel 62, and the second through hole 252. Therefore, the length of the first transmission path includes the sum of the length of the second channel 62 and the length of the fluid conduit 12. The length of the second transmission path includes the length of the first channel 61, and the sum of the length of the second channel 62 and the length of the fluid conduit 12 can be greater than or equal to the length of the first channel 61.

[0091] As an example, the first channel 61 and the second channel 62 have approximately the same length. For instance, the length of the first channel 61 may be slightly longer than the length of the second channel 62.

[0092] As an example, the length of fluid conduit 12 is greater than or equal to the length of the first channel 61 or the second transmission path.

[0093] As an example, the length of the second transmission path primarily includes the length of the first channel 61. For instance, the length of the first channel 61 accounts for at least 70% of the length of the second transmission path.

[0094] As an example, the first storage cavity 11 has a proximal end and a distal end disposed opposite to each other, and the fluid conduit 12 includes a first end 121 and a second end 122, the second end 122 being disposed adjacent to or located at the distal end of the first storage cavity 11. In some embodiments, the fluid conduit 12 is a straight tube, and the longitudinal length of the fluid conduit 12 may be approximately equal to the longitudinal depth of the first storage cavity 11.

[0095] In some embodiments, reference may be made to Figure 7 and Figure 8 When the piston head 32 moves in the second direction, the fluid flows from the second chamber 3112, the second storage chamber 21, and the first storage chamber 11 to the first chamber 3111. For example, when the aerosol generating device 100 is in the first operating posture, when the piston head 32 moves in the second direction, the first chamber 3111 draws liquid matrix from the first storage chamber 11 under the action of the piston head 32, causing the gas pressure in the first storage chamber 11 to decrease, and the liquid matrix in the second chamber 3112 flows into the second storage chamber 21, while the gas in the second storage chamber 21 flows into the first storage chamber 11 under the action of the pressure difference.

[0096] When the piston head 32 moves along the first direction, the fluid in the first chamber 3111 flows into the second chamber 3112, thereby ensuring that the second chamber 3112 has sufficient fluid. For example, when the aerosol generating device 100 is in the first operating posture, when the piston head 32 moves along the first direction, at least a portion of the liquid matrix obtained from the first storage chamber 11 by the first chamber 3111 flows into the second chamber 3112, ensuring that the second chamber 3112 has sufficient liquid matrix. Thus, when the piston head 32 moves again along the second direction, the second chamber 3112 can continue to inject liquid matrix into the second storage chamber 21 to increase the amount of liquid matrix in the second storage chamber 21.

[0097] Furthermore, the aerosol generating device 100 or pump module 3 also includes a first valve 51' disposed between the first storage chamber 11 and the first chamber 3111, and a second valve 52' disposed between the first chamber 3111 and the second chamber 3112.

[0098] When the piston head 32 moves in the second direction, the first valve 51' opens and the second valve 52' closes, so that the first chamber 3111 draws fluid from the first storage chamber 11 to reduce the air pressure in the first storage chamber 11 and isolates the first chamber 3111 and the second chamber 3112.

[0099] When the piston head 32 moves in the first direction, the second valve 52' opens and the first valve 51' closes, so that the fluid in the first chamber 3111 can flow into the second chamber 3112, and the second chamber 3112 can store the fluid from the first chamber 3111, and the first chamber 3111 is isolated from the first storage chamber 11.

[0100] When the aerosol generating device 100 is in the first operating posture, when the piston head 32 moves in the first direction, the second chamber 3112 can store the liquid matrix from the first chamber 3111. When the piston head 32 moves in the second direction, the second chamber 3112 can inject at least a portion of the gas stored therein into the second storage chamber 21.

[0101] In some embodiments, reference may be made to Figure 7 and Figure 8 The aerosol generating device 100 or pump module 3 further includes a third valve 53' disposed between the first storage chamber 11 and the second storage chamber 21. The third valve 53' is configured to open when the pressure on the side facing the second storage chamber 21 is greater than the pressure on the side away from the second storage chamber 21, so that fluid in the second storage chamber 21 can flow into the first storage chamber 11.

[0102] In some embodiments, reference may be made to Figure 7 , Figure 8 and Figure 11 The atomizing module 2 has a first through hole 251 and a second through hole 252 for communicating with the second storage cavity 21. The first through hole 251 and the first storage cavity 11 are connected through a first channel 61', and the second through hole 252 and the second chamber 3112 are connected through a second channel 62'. Thus, fluid in the second storage cavity 21 can flow into the first channel 61' through the first through hole 251, and then into the first storage cavity 11 via the first channel 61'. Similarly, fluid in the second chamber 3112 can flow into the second through hole 252 through the second channel 62', and then into the second storage cavity 21. The first chamber 3111 and the second chamber 3112 can be located on the second channel 62', and fluid in the second storage cavity 21 can flow into the second storage cavity 21 sequentially through the first chamber 3111, the second chamber 3112, and the second through hole 252.

[0103] Furthermore, at least one of the first channel 61' and the second channel 62' is disposed inside the pump module 3. Preferably, both the first channel 61' and the second channel 62' are disposed inside the pump module 3.

[0104] The third valve 53' can be installed on the pump module 3 and located in the first channel 61', or the third valve 53' can be installed on the atomizing module 2 corresponding to the first through hole 252.

[0105] In some embodiments, the second storage cavity 21 has a proximal end and a distal end disposed opposite to each other, the suction nozzle 4 is disposed near the proximal end of the second storage cavity 21, and the liquid guide hole 231 may be located at or near the distal end of the second storage cavity 21.

[0106] The first through-hole 251 and the second through-hole 252 have a height difference in the longitudinal direction, and the first through-hole 251 is closer to the proximal end of the second storage cavity 21 than the second through-hole 252, or the first through-hole 251 is located at the proximal end of the second storage cavity 21, to prevent the liquid matrix in the second storage cavity 21 from submerging the first through-hole 251 when the aerosol generating device 100 is in the first use posture. When the liquid matrix in the second storage cavity 21 is close to the first through-hole 251, if the pump module 3 continues to operate to continue injecting liquid matrix into the second storage cavity 21, then part of the liquid matrix in the second storage cavity 21 will flow back to the first storage cavity 11 through the first through-hole 251 and the first channel 61', or part of the liquid matrix in the second storage cavity 21 will flow back to the second chamber 3112 through the first through-hole 251 and the first channel 61, and then flow back to the first storage cavity 11 through the first chamber 311. When the aerosol generating device 100 is in its first operating posture, the first through-hole 251 is close to or located near the proximal end of the second storage cavity 21. This raises the threshold for the liquid matrix in the second storage cavity 21 to flow back to the first storage cavity 11, allowing the second storage cavity 21 to store more liquid matrix. This helps to ensure that the liquid matrix in the second storage cavity 21 can fully wet the atomizing core 22, thus helping to prevent the atomizing core 22 from burning out. The first through-hole 251 being located near the proximal end of the second storage cavity 21 means that the distance between the first through-hole 251 and the proximal end of the second storage cavity 21 is less than the distance between the first through-hole 251 and the distal end of the second storage cavity 21, or that the first through-hole 251 is located longitudinally between the proximal end of the second storage cavity 21 and the atomizing core 22.

[0107] In some embodiments, the pump module 3 includes a body 31 having a pump chamber 311 inside, a piston head 32 movably disposed in the pump chamber 311, and the piston head 32 being movable relative to the body 31 between a first position and a second position.

[0108] As an example, the piston head 32 is configured to move linearly between a first position and a second position. Further, the piston head 32 can move from the first position to the second position along a first direction, and can move from the second position to the first position along a second direction. The first and second directions can be parallel to the longitudinal direction.

[0109] As an example, the piston head 32 is configured to rotate between a first position and a second position. Based on this, one of the first direction and the second direction can be clockwise, and the other can be counterclockwise.

[0110] Of course, in other embodiments, the piston head 32 is configured to helically move or otherwise move between the first position and the second position.

[0111] In some embodiments, the piston head 32 divides the pump chamber 311 into a first chamber 3111 and a second chamber 3112, such that the capacity of the first chamber 3111 and the capacity of the second chamber 3112 can change in opposite directions as the piston head 32 moves. For example, the first chamber 3111 and the second chamber 3112 are located on opposite sides of the piston head 32. When the piston head 32 moves in a first direction, the capacity of the first chamber 3111 decreases and the capacity of the second chamber 3112 increases; when the piston head 32 moves in a second direction, the capacity of the first chamber 3111 increases and the capacity of the second chamber 3112 decreases.

[0112] In some embodiments, a second valve 52 / 52' is disposed on the piston head 32, such that when the second valve 52 / 52' is open, fluid can pass through the piston head 32 and flow from one side of the piston head 32 to the other side. More specifically, when the second valve 52 / 52' is open, the first chamber 3111 and the second chamber 3112 are connected through the piston head 32.

[0113] The piston head 32 has a first exposed surface and a second exposed surface disposed opposite to each other, with the first exposed surface located in a first direction of the second exposed surface. The exposed surface of the piston head 32 refers to the surface of the piston head 32 that is exposed and observable before the piston assembly is assembled with the body 31. In embodiments where the piston assembly includes a piston rod 33, the exposed surface of the piston head 32 is located outside the piston rod 33 and is not obstructed by it. In some embodiments, the first exposed surface defines a partial boundary of the first chamber 3111, and the second exposed surface defines a partial boundary of the second chamber 3112. Thus, when the first chamber 3111 and the second chamber 3112 are in communication, the first exposed surface is in communication with the second exposed surface.

[0114] In some embodiments, reference may be made to Figure 4 and Figure 5 , Figure 9 and Figure 10The piston head 32 has a second connecting hole 321. The second valve 52 / 52' includes a second fixed part 521 / 521' and a second movable part 522 / 522' that can move relative to the second fixed part 521 / 521'. The second fixed part 521 / 521' is fixed to the piston head 32. When the second valve 52 / 52' is closed, the second movable part 522 / 522' seals the second connecting hole 321, isolating the second chamber 3112 from the first chamber 3111. When the second valve 52 / 52' is opened, the position or shape of the second movable part 522 / 522' changes, creating a gap between the second movable part 522 / 522' and the second connecting hole 321, thereby releasing the seal on the second connecting hole 321 and allowing the second chamber 3112 to connect to the first chamber 3111 through the second connecting hole 321.

[0115] Furthermore, a second fixing hole 322 is provided on the piston head 32, and a portion of the second fixing part 521 can be interference-fitted into the second fixing hole 322, thereby fixing the second fixing part 521' onto the piston head 32.

[0116] In some embodiments, under the action of the second valve 52 / 52', the second connecting hole 321 allows fluid to flow unidirectionally between the first chamber 3111 and the second chamber 3112, or the second valve 52 / 52' is a one-way valve. In some embodiments, not shown, the second valve 52 / 52' is a one-way valve disposed on the piston head 32, which has a connecting hole inside, through which the first chamber 3111 and the second chamber 3112 are unidirectionally connected when the one-way valve is open.

[0117] In such Figures 2-5 In the embodiment shown, the second valve 52 is configured to allow fluid in the second chamber 3112 to flow unidirectionally into the first chamber 3111.

[0118] For example, the second movable part 522 is disposed on the side of the second connecting hole 321 facing the first chamber 3111, and the second movable part 522 is configured to automatically displace or elastically deform in the direction of the first chamber 3111 when the air pressure in the first chamber 3111 is less than the air pressure in the second chamber 3112, thereby connecting the second connecting hole 321 to the first chamber 3111 and the second chamber 3112. When the second movable part 522 is in its natural state and when the air pressure in the second chamber 3112 is less than or equal to the air pressure in the first chamber 3111, the piston head 32 supports the second movable part 522 and the second movable part 522 covers the opening of the second connecting hole 321 away from the second chamber 3112, thereby sealing the second connecting hole and isolating the second connecting hole 321 from the first chamber 3111.

[0119] In such Figures 7-10In the illustrated embodiment, the second valve 52' is configured to allow fluid in the first chamber 311 to flow unidirectionally into the second chamber 3112.

[0120] For example, the second movable part 522' is disposed on the side of the second connecting hole 321 facing the second chamber 3112, and the second movable part 522' is configured to automatically displace or elastically deform in the direction of the second chamber 3112 when the air pressure in the first chamber 3111 is greater than the air pressure in the second chamber 3112, thereby connecting the second connecting hole 321 to the first chamber 3111 and the second chamber 3112. When the second movable part 522' is in its natural state and the air pressure in the second chamber 3112 is greater than or equal to the air pressure in the first chamber 3111, the piston head 32 supports the second movable part 522' and the second movable part 522' covers the opening of the second connecting hole 321 facing the second chamber 3112, thereby sealing the second connecting hole 321 and isolating the second connecting hole 321 from the second chamber 3112.

[0121] Please refer to Figure 4 and Figure 5 , Figure 9 and Figure 10 Multiple second connecting holes 321 can be formed on the piston head 32 to improve the efficiency of fluid transfer between the first chamber 3111 and the second chamber 3112, thereby helping to improve the efficiency of injecting liquid matrix from the first storage chamber 11 or the second chamber 3112 into the second storage chamber 21. It should be noted that, as used herein, "multiple" refers to two or more. As an example, see [reference needed]. Figure 4 and Figure 5 Multiple second connecting holes 321 can be sealed by the same second movable part 522. As an example, see [reference needed]. Figure 9 and Figure 10 It has multiple second movable parts 522', which are configured to seal multiple communicating holes 321 one by one. Furthermore, the multiple second movable parts 522' are connected to the same second fixed part 521'.

[0122] In some embodiments, the piston head 32 includes a first base 323 and a sealing ring 324 circumferentially disposed outside the first base 323. The sealing ring 324 is slidable along the inner wall of the annular sidewall 312 of the body 31 and provides a seal between the first base 323 and the annular sidewall 312 to prevent fluid from flowing between the first chamber 3111 and the second chamber 3112 along the contact point between the annular sidewall 312 and the piston head 22. A second valve 52 / 52' may be disposed on the first base 323. A second connecting hole 321 may penetrate the first base 323.

[0123] In some embodiments, the pump module 3 further includes a connection component 34 for connecting the storage module 1. The connection component 34 is provided with a fluid passage, and a first valve 51 / 51' may be disposed on the connection component 34. When the first valve 51 / 51' is open, the first chamber 3111 is connected to the first storage chamber 11, and when the first valve 51 / 51' is closed, the first chamber 3111 and the first storage chamber 11 are isolated.

[0124] Furthermore, when the piston head 32 is in the second position, the connecting assembly 34 abuts against the piston head 32 to prevent the piston head 32 from continuing to move in the first direction.

[0125] In some embodiments, the first valve 51 / 51′ includes a first fixed portion 511 / 511′ and a first movable portion 512 / 512′ that is movable relative to the first fixed portion 511 / 511′. A first communicating hole 341 is provided on the connecting assembly 34, and the first fixed portion 511 / 511′ can be fixed to the connecting assembly 34. When the first valve 51 / 51′ is closed, the first movable portion 512 / 512′ seals the first communicating hole 341, thereby isolating the first storage cavity 11 from the first chamber 3111. When the first valve 51 / 51′ is opened, the position or shape of the first movable portion 512 / 512′ changes, creating a gap between the first movable portion 512 / 512′ and the first communicating hole 341, thereby releasing the seal on the first communicating hole 341 and allowing the first storage cavity 11 to communicate with the first chamber 3111 through the first communicating hole 341.

[0126] Furthermore, the connecting component 34 is also provided with a first fixing hole 342, and at least a portion of the first fixing part 511 / 511′ can be interference-fitted into the first fixing hole 342, thereby fixing the first fixing part 511 / 511′ onto the connecting component 34.

[0127] In some embodiments, under the action of the first valve 51 / 51′, the first connecting hole 341 allows fluid to flow unidirectionally between the first chamber 3111 and the first storage chamber 11, or the first valve 51 / 51′ is a one-way valve with a connecting hole inside.

[0128] In such Figures 2-6 In the illustrated embodiment, the first valve 51 is configured to allow fluid in the second chamber 3112 to flow unidirectionally into the first storage chamber 3111.

[0129] For example, the first movable part 512 is disposed on the side of the first connecting hole 341 facing the first storage cavity 11, and the first movable part 512 is configured to automatically displace or elastically deform in the direction of the first storage cavity 11 when the air pressure in the first storage cavity 11 is less than the air pressure in the first chamber 3111, thereby connecting the first connecting hole 341 to the first chamber 3111 and the first storage cavity 11. When the first movable part 512 is in its natural state and when the air pressure in the first chamber 3111 is less than or equal to the air pressure in the first storage cavity 11, the connecting assembly 34 supports the first movable part 512 and the first movable part 512 covers the opening of the first connecting hole 341 away from the opening of the first chamber 3111, thereby sealing the first connecting hole 341 and isolating the first connecting hole 341 from the first storage cavity 11. The air pressure in the first chamber 3111 can increase when the piston head 32 moves in the first direction.

[0130] In such Figures 7-10 In the embodiment shown, the first valve 51' is configured to allow fluid in the first storage chamber 11 to flow unidirectionally into the first chamber 3111.

[0131] For example, the first movable part 512' is disposed on the side of the first connecting hole 341 facing the first chamber 3111, and the first movable part 512' is configured to automatically displace or elastically deform in the direction of the first chamber 3111 when the air pressure in the first chamber 3111 is less than the air pressure in the first storage chamber 11, thereby connecting the first connecting hole 341 to the first chamber 3111 and the first storage chamber 11. When the first movable part 512' is in its natural state and when the air pressure in the first storage chamber 11 is less than or equal to the air pressure in the first chamber 3111, the connecting assembly 34 supports the first movable part 512' and the first movable part 512' covers the opening of the first connecting hole 341 facing the first chamber 3111, thereby sealing the first connecting hole 341 and isolating the first connecting hole 341 from the first chamber 3111. The air pressure in the first chamber 3111 can be reduced when the piston head 32 moves in the second direction.

[0132] In some embodiments, the main body 31 is further provided with a first guide port 3a for introducing or exporting fluid into or out of the first chamber 3111. Fluid in the first chamber 3111 can flow through the first guide port 3a to the first storage chamber 11 during the movement of the piston head 32, or fluid in the first storage chamber 11 can flow into the first chamber 3111 through the first guide port 3a during the movement of the piston head 32. In such cases... Figure 2 and Figure 3 In the illustrated embodiment, when the aerosol generating device 100 is in a first operating posture, if the piston head 32 moves along a first direction, the first chamber 3111 contracts and the piston head 32 pushes the gas in the first chamber 3111 through the first guide port 3a to the first storage chamber 11. Figure 7 and Figure 8 In the embodiment shown, when the aerosol generating device 100 is in the first use posture, if the piston head 32 moves in the second direction, the first chamber 3111 expands and draws in the liquid matrix in the first storage chamber 11 through the first guide port 3a.

[0133] In some embodiments, the first exposed surface of the piston head 32 is located in the first direction of the second exposed surface of the piston head 32, the first chamber 3111 is located in the first direction of the second chamber 3112, and the first guide port may be located in the first direction of the piston head 32, so that the first guide port is disposed toward the piston head 32.

[0134] In some embodiments, the first valve 51 / 51' is disposed on the body 31 corresponding to the first flow port, such that the first flow port is sealed when the first valve 51 / 51' is closed, and at least partially open when the first valve 51 / 51' is opened.

[0135] In some embodiments, the main body 31 is further provided with a second guide port 3b for introducing or exporting fluid into or out of the second chamber 3111. Fluid in the second chamber 3112 can flow through the second guide port 3b to the second storage chamber 21 during the movement of the piston head 32, or fluid in the second storage chamber 21 can flow into the second chamber 3112 through the second guide port 3b during the movement of the piston head 32. In such cases... Figure 2 and Figure 3 In the illustrated embodiment, if the piston head 32 moves in the first direction, the second chamber 3112 expands and the gas in the second storage chamber 21 flows into the second chamber 3112 through the second guide port 3b. In such a case... Figure 7 and Figure 8 In the embodiment shown, when the aerosol generating device 100 is in the first use posture, if the piston head 32 moves in the second direction, the second chamber 3112 contracts and the liquid matrix in the second chamber 3112 flows to the second storage chamber 21 through the second guide port 3b.

[0136] In some embodiments, reference may be made to Figures 2 to 6 The third valve 53 is disposed on the connecting assembly 34. When the third valve 53 is open, the first storage chamber 11 is connected to the second storage chamber 21, and when the third valve 53 is closed, the first storage chamber 11 and the second storage chamber 21 are isolated.

[0137] The third valve 53 includes a third fixed part 531 and a third movable part 532 that is movable relative to the third fixed part 531. A third connecting hole 343 is provided on the connecting assembly 34, and the third fixed part 531 is fixed to the connecting assembly 34. When the third valve 53 is closed, the third movable part 532 seals the third connecting hole 343, thus isolating the second storage cavity 21 from the first cavity 3111. When the third valve 53 is opened, the position or shape of the third movable part 532 changes, creating a gap between the third movable part 532 and the third connecting hole 343, thereby releasing the seal on the third connecting hole 343 and allowing the second storage cavity 21 to connect to the first storage cavity 11 through the third connecting hole 343.

[0138] Furthermore, a third fixing hole 344 is provided on the connecting component 34, and a portion of the third fixing part 531 can be interference-fitted into the third fixing hole 344, thereby fixing the third fixing part 344 onto the connecting component 34.

[0139] In some embodiments, under the action of the third valve 53 / 53′, the third connecting hole 343 allows fluid to flow unidirectionally between the first storage chamber 11 and the second storage chamber 21, or the third valve 53 / 53′ is a one-way valve with a connecting hole inside.

[0140] In such Figures 2-6 In the embodiment shown, the third valve 53 is configured to allow fluid in the first storage chamber 11 to flow unidirectionally into the second storage chamber 21.

[0141] In this embodiment, the third valve 53 can be combined with... Figures 2-6 The first valve 51 shown has the same structural features, and the cooperation relationship between the third valve 53 and the connecting assembly 34 is also the same as that between the first valve 51 and the connecting assembly 34, which will not be described again here. Specifically, the third valve 53 can open when the piston head 32 moves in the first direction, thereby allowing the first storage chamber 11 to inject liquid matrix or gas into the second storage chamber 21, and close when the piston head 32 moves in the second direction.

[0142] In such Figures 7-10 In the illustrated embodiment, the pump module 3 and the atomizing module 2 are arranged laterally. The pump module 3 includes a first sidewall 351' extending longitudinally, and a portion of the first channel 61' extends longitudinally along the surface of the first sidewall 351'. The length of the second transmission path and / or the first channel 61' may be less than the longitudinal extension length of the first sidewall 351'.

[0143] In such Figures 7-10In the illustrated embodiment, the pump module 3 further includes a second sidewall 352, with at least a portion of the first sidewall 351' located between the second sidewall 352 and the atomizing module 2. The pump module 3 can be connected to the atomizing module 2 via the first sidewall 351'. At least a portion of the first channel 61' can be disposed between the first sidewall 351' and the second sidewall 352.

[0144] Furthermore, a third through hole 3511' is provided on the first sidewall 351' at the position corresponding to the first through hole 251 for communicating with the first channel 61'. When the pump module 3 and the atomizing module 2 are combined, the first through hole 251 and the third through hole 351 can be aligned and communicated, thereby enabling the second storage cavity 21 to communicate with the first channel 61'.

[0145] The third valve 53' includes a third fixed part 531' and a third movable part 532' that is movable relative to the third fixed part 531'. The third fixed part 531' is fixed to the first side wall 351' or clamped between the first side wall 351' and the second side wall 352. When the third valve 53' is closed, the third movable part 532' seals the third through hole 3511', isolating the first storage cavity 11 and the second storage cavity 21. When the third valve 53' is open, the position or shape of the third movable part 532' changes, creating a gap between the third movable part 532' and the third through hole 3511', thereby releasing the seal on the third through hole 3511' and allowing the first through hole 251 and the first channel 61' to communicate through the third through hole 3511'.

[0146] In such Figures 7-10 In the embodiment shown, the third valve 53' is configured to allow fluid in the second storage chamber 21 to flow unidirectionally into the first storage chamber 11.

[0147] For example, the third movable part 532' is disposed on the side away from the second storage cavity 21 or located between the first sidewall 351' and the second sidewall 352. The third movable part 532' is configured to automatically displace or elastically deform in the direction away from the second storage cavity 21 when the air pressure in the second storage cavity 21 is greater than the air pressure in the first storage cavity 11, thereby allowing the first storage cavity 11 to connect to the second storage cavity 21 through the first channel 61'. When the third movable part 532' is in its natural state and when the air pressure in the first storage cavity 11 is greater than or equal to the air pressure in the second storage cavity 21, the first sidewall 351' supports the third movable part 532' and the third movable part 532' covers the opening of the third through hole 3511' away from the second storage cavity 21, thereby sealing the third through hole 3511' and isolating the first storage cavity 11 and the second storage cavity 21.

[0148] The third valve 53' can be opened when the piston head 32 moves in the second direction, thereby allowing the second storage chamber 21 to inject liquid matrix or fluid into the first storage chamber 11. The third valve 53' can be closed when the piston head 32 moves in the first direction.

[0149] In such Figures 7-10 In the illustrated embodiment, a portion of the first channel 61' may also be disposed between the first sidewall 351' and the main body 31. The portion of the first channel 61' disposed between the first sidewall 351' and the second sidewall 352 is defined as the first portion, and the portion disposed between the first sidewall 351' and the main body 31 is defined as the second portion. The first portion is connected to the first storage cavity 11 through the second portion.

[0150] In such Figures 7-10 In the illustrated embodiment, the first sidewall 351' and the second sidewall 352 can be made of the same material. Both the first sidewall 351' and the second sidewall 352 can be injection molded products. The first sidewall 351' and the second sidewall 352 can be connected by assembly.

[0151] In such Figures 7-10 In the embodiment shown, a fourth through hole is provided on the first sidewall 351' at the position corresponding to the second through hole 252 for communicating with the pump chamber 311. Specifically, the fourth through hole can communicate with the second chamber 3112. When the pump module 3 and the atomizing module 2 are combined, the second through hole 252 and the fourth through hole can be aligned and communicated, thereby enabling the second storage cavity 21 to communicate with the second channel 62'.

[0152] The pump module 3 may further include a first hollow tube 353 connecting the main body 31 and the first sidewall 351'. The second chamber 3112 may be connected to the second storage chamber 21 sequentially through the second guide port 3b, the first hollow tube 353, and the fourth through hole. The first hollow tube 353 may be integrally formed with the main body 31. Preferably, the atomizing module 2 may be disposed on one side of the pump module 3 in a transverse direction, and the first hollow tube 353 may extend from the main body 31 in a transverse straight line to connect with the first sidewall 351'. The first hollow tube 353 may be integrally formed with the first sidewall 351', or the first hollow tube 353, the main body 31, and the first sidewall 351' may be integrally formed.

[0153] In such Figures 7-10 In the illustrated embodiment, the pump module 3 further includes a sealing gasket 354' disposed on the first sidewall 351'. When the atomizing module 2 and the pump module 3 are combined, the sealing gasket 354' can provide a seal between the first sidewall 351' and the atomizing module 2, so that the first through hole 251 and the third through hole 3511' are in sealed communication, and / or the second through hole 252 and the fourth through hole are in sealed communication, so as to prevent leakage from the connection between the fluid atomizing module 2 and the pump module 3 during the transmission process.

[0154] In some embodiments, reference may be made to Figure 2 , Figure 3 and Figure 12 Pump module 3 and atomizing module 2 are arranged laterally. Pump module 3 includes a first sidewall 351 extending longitudinally, and a portion of the first channel 61 extends longitudinally along the surface of the first sidewall 351. The length of the second transmission path and / or the first channel 61 may be less than the longitudinal extension length of the first sidewall 351.

[0155] Furthermore, the pump module 3 also includes a sealing gasket 354 disposed on the first sidewall 351. The sealing gasket 354 is disposed between the first sidewall 351 and the atomizing module 2. At least a portion of the first channel 61 for connecting the first through hole 251 and the second chamber 3112 may be disposed between the first sidewall 351 and the sealing gasket 354. A third through hole 3511 for connecting the first channel 61 may be formed on the sealing gasket 354 at a position corresponding to the first through hole 251. When the atomizing module 2 and the pump module 3 are combined, the third through hole 3511 is aligned and connected with the first through hole 251.

[0156] Furthermore, the first sidewall 351 has a first groove 3512, in which at least a portion of the sealing gasket 354 is fitted and held. Even further, a second groove 3513 is provided on the first sidewall 351 corresponding to the first groove 3512, and a portion of the first channel 61 is located in the second groove 3513. A fifth through hole 3514 may also be provided on the first sidewall 351, in which a portion of the first channel 61 is located, and the fifth through hole 3514 connects the second groove 3513 and the second chamber 3112.

[0157] In such Figure 2 , Figure 3 and Figure 12 In the illustrated embodiment, the first channel 61 and the second channel 62 are arranged longitudinally such that their projections in the lateral direction do not overlap. A portion of the second channel 62 may extend longitudinally along the wall of the pump module 3. The length of the second channel 62 may be less than the longitudinal extension length of the first sidewall 351.

[0158] In such Figure 2 , Figure 3 and Figure 12 In the illustrated embodiment, at least a portion of the second channel 62 for connecting the second through-hole 252 and the first storage cavity 11 is disposed between the first sidewall 351 and the main body 31. At least a portion of the second channel 62 may extend longitudinally along the outer surface of the main body 31. The length of the second channel 62 may be less than or equal to the longitudinal extension length of the outer surface of the main body 31 or less than the height of the pump chamber 311.

[0159] Furthermore, the pump module 3 also includes a second hollow tube 355, in which a portion of the second channel 62 may be disposed. A sealing gasket 354 provides a seal between the second hollow tube 355 and the atomizing module 2 to prevent leakage between the two during fluid transfer between the atomizing module 2 and the second hollow tube 355. Preferably, the second hollow tube 355 extends in a straight line in the lateral direction.

[0160] In some embodiments, the pump module 3 further includes a piston rod 33 for driving the piston head 32 to move. The piston rod 33 is connected to the side of the piston head 32 away from the second position, thereby occupying part of the space of the second chamber 3112.

[0161] In some embodiments, the pump module 3 further includes an operating member 36 linked to the piston rod 33. The operating member 36 is configured to be operable to drive the piston head 32 to move within the pump chamber 311 via the piston rod 33. In some embodiments, the piston head 32 can be driven to move longitudinally within the pump chamber 311 by operating the operating member 36, or the piston head 32 can be driven to move in a direction from a first position to a second position by pressing the operating member 36.

[0162] In some embodiments, the pump module 3 further includes a reset member 37, which acts on the operating member 36 or the piston rod 33 to drive the piston head 32 to automatically reset from the second position to the first position, and the reset member 37 facilitates holding the piston head 32 in the first position. The reset member 37 may include a spring that surrounds the piston rod 33 and is disposed between the body 31 and the operating member 36.

[0163] In some embodiments, the second valve 52 / 52' and the piston rod 33 are arranged side by side, so that their projections on the piston head 32 do not overlap. The projections of the second valve 52 / 52' and the piston rod 33 on the piston head 32 may be adjacent or spaced apart.

[0164] In some embodiments, the piston rod 33 is connected to the central region of the piston head 32. In some embodiments, the second valve 52 / 52' is disposed off-center from the central region of the piston head 32.

[0165] In some embodiments, the pump module 3 includes an electrically operated pump module, such that the piston head 32 can move within the pump chamber under the action of electricity.

[0166] It should be noted that the piston rod 33 included in the pump module 3 is optional rather than mandatory. In other embodiments, the piston head 32 is configured to be electromagnetically driven to move within the pump chamber 311.

[0167] In some embodiments, the piston head 32 reciprocates once between a first position and a second position, enabling the first storage chamber 11 or the pump module 3 to inject at least 0.2 ml of liquid matrix into the second storage chamber 21. Alternatively, the operating member 36 is operated or pressed once, enabling the first storage chamber 11 or the pump module 3 to inject at least 0.2 ml of liquid matrix into the second storage chamber 21.

[0168] Furthermore, after operating the operating element 36 N times, or after the piston head 32 reciprocates between the first and second positions N times, the second storage cavity 21 can be filled with liquid matrix, where 2 ≤ N ≤ 15. Here, "the second storage cavity 21 is filled with liquid matrix" means that, when the aerosol generating device 100 is in the first operating posture, the liquid level in the second storage cavity 21 reaches the liquid injection termination indicator line of the atomizing module 2, or the liquid matrix in the second storage cavity 21 can flow into the first through hole 251 on the atomizing module 2. More preferably, 5 ≤ N ≤ 10.

[0169] In such Figure 2 and Figure 3 In the illustrated embodiment, when the piston head 32 moves from the first position to the second position, the first storage chamber 11 can inject at least 0.2 ml of liquid matrix into the second storage chamber 21.

[0170] In such Figure 7 and Figure 8 In the illustrated embodiment, when the piston head 32 moves from the second position to the first position, the second chamber 3112 can inject at least 0.2 ml of liquid matrix into the second storage chamber 21.

[0171] In some embodiments, the pump assembly 3 further includes a first housing 38, and first sidewalls 351 / 351' can be assembled onto the first housing 38, or the first sidewalls 351 / 351' can be integrally formed with the first housing 38. The first housing 38, the first sidewalls 351 / 351', and the connecting assembly 34 can be closed to form a receiving space, in which the main body 31 is received. Of course, the connecting assembly 34 can be assembled onto the first housing 38, or the connecting assembly 34 can be integrally formed with the first housing 38. At least a portion of the first channel 61 / 61' and / or at least a portion of the second channel 62 / 62' can be located between the first sidewalls 351 / 351' and the first housing 38.

[0172] In some embodiments, reference may be made to Figure 11 and Figure 12 One of the atomizing module 2 and the pump module 3 is provided with a longitudinally extending guide rail 26, and the other is provided with a sliding part 39. The sliding part 39 is fitted into the guide rail 26, so that the atomizing module 2 and the pump module 3 can be assembled together longitudinally.

[0173] Furthermore, a hook is provided on the guide rail 26 or the sliding part 39, which is used to prevent the atomizing module 2 and the pump module 3 from shifting laterally and separating laterally.

[0174] In some embodiments, the aerosol generating device 100 is configured to have a first use posture and a second use posture; when the aerosol generating device 100 is in the first use posture, the pump module 3 can drive the liquid matrix in the first storage chamber 11 into the second storage chamber 21, and drive the gas in the second storage chamber 21 into the first storage chamber 11; when the aerosol generating device 100 is in the second use posture, the pump module 3 can drive the liquid matrix in the second storage chamber 21 into the first storage chamber 11, and drive the gas in the first storage chamber 11 into the second storage chamber 21.

[0175] In some embodiments, when the aerosol generating device 100 is in a first usage posture, the aerosol generating device 100 is upright or the nozzle 4 is positioned away from the ground. When the aerosol generating device 100 is in a second usage posture, the aerosol generating device 100 is inverted or the nozzle 4 is positioned towards the ground.

[0176] It should be noted that the capacity of the first storage chamber 11 can be greater than the capacity of the second storage chamber 21. When the aerosol generating device 100 is in the first operating posture, the first storage chamber 11 can inject liquid matrix exceeding the capacity of the second storage chamber 21 into the second storage chamber 21 under the action of the pump module 3. When the liquid matrix in the second storage chamber 21 submerges at least a portion of the first through hole 251, if the pump module 3 continues to operate, the liquid matrix in the second storage chamber 21 can flow back to the first storage chamber 11 through the first through hole 251, or flow to the second chamber 3112 through the first through hole 251 and then flow back to the first storage chamber 11 through the first chamber 3111. This eliminates the need for precise control of the operation of the pump module 3 and also prevents liquid matrix exceeding the capacity of the second storage chamber 21 from leaking to the outside when the first storage chamber 11 injects excessive liquid matrix into the second storage chamber 21.

[0177] In some embodiments, the first storage cavity 11 has a proximal end and a distal end disposed opposite to each other, and the storage module 1 includes a fluid conduit 12, which includes a first end 121 and a second end 122 disposed adjacent to the distal end of the first storage cavity 11.

[0178] You can refer to Figure 2 and Figure 3In the illustrated embodiment, when the aerosol generating device 100 is in the first operating posture, the second end 122 can be immersed in the liquid matrix in the first storage chamber 11, allowing the pump module 3 to drive the liquid matrix in the first storage chamber 11 into the fluid conduit 12. The liquid matrix then flows through the fluid conduit 12 to the second channel 62, and subsequently into the second storage chamber 21. For example, when the piston head 32 moves in the first direction, it pushes the gas in the first chamber 3111 into the first storage chamber 11, increasing the gas pressure in the first storage chamber 11 and causing the liquid matrix in the first storage chamber 11 to be discharged through the fluid conduit 12. When the piston head 32 moves in the second direction, at least a portion of the gas in the second chamber 3112 or at least a portion of the gas in the second chamber 3112 originating from the second storage chamber 21 can flow into the first chamber 3111.

[0179] When the aerosol generating device 100 is in its second operating position, the second end 122 is positioned above the liquid level of the liquid matrix in the first storage chamber 11, allowing the pump module 3 to drive the gas in the first storage chamber 11 into the fluid conduit 12. The gas then flows through the fluid conduit 12 to the second channel 62, and subsequently into the second storage chamber 21. For example, when the piston head 32 moves in the first direction, it pushes the gas or liquid matrix in the first chamber 3111 into the first storage chamber 11, increasing the pressure in the first storage chamber 11 and causing the gas in the first storage chamber 11 to be discharged through the fluid conduit 12. When the piston head 32 moves in the second direction, at least a portion of the liquid matrix extracted from the second storage chamber 21 by the second chamber 3112 can flow into the first chamber 3111.

[0180] You can refer to Figure 7 and Figure 8 In the embodiment shown, when the aerosol generating device 100 is in the first use position, the second end 122 can be immersed in the liquid matrix in the first storage chamber 11, so that the pump module 3 can draw the liquid matrix in the first storage chamber 11 through the fluid conduit 12 and introduce at least a portion of the drawn liquid matrix into the second storage chamber 21 through the pump chamber 311.

[0181] When the aerosol generating device 100 is in the second use position, the second end 122 is located above the liquid level of the liquid matrix in the first storage chamber 11, so that the pump module 3 can draw gas from the first storage chamber 11 through the fluid conduit 12 and introduce at least a portion of the drawn gas into the second storage chamber 21 through the pump chamber 311.

[0182] In some embodiments, the atomizing module 2 is detachably connected to the pump module 3; and / or the pump module 3 is detachably connected to the storage module 1.

[0183] 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. A piston assembly, characterized in that, include: The piston head has a first exposed surface and a second exposed surface disposed opposite to each other, wherein the first exposed surface is located in a first direction of the second exposed surface; and A valve is disposed on the piston head and is configured to open when the piston head moves in a first direction or a second direction, so that fluid can pass through the piston head to make the first exposed surface and the second exposed surface in fluid communication, wherein the first direction and the second direction are opposite.

2. The piston assembly according to claim 1, characterized in that, The piston head has a connecting hole, which connects the first exposed surface and the second exposed surface in fluid flow when the valve is open, and seals the connecting hole when the valve is closed.

3. The piston assembly according to claim 2, characterized in that, The valve includes a fixed part fixed to the piston head and a movable part for sealing the communication hole, the movable part being connected to the fixed part; The movable part is configured to undergo displacement or elastic deformation when the piston head moves in a first direction or a second direction, thereby causing the valve to open.

4. The piston assembly according to claim 3, characterized in that, The movable part is configured to seal the opening of the connecting hole toward the first exposed surface when the piston head moves in a first direction, and to move or elastically deform in the first direction when the piston head moves in a second direction, thereby opening the valve.

5. The piston assembly according to claim 3, characterized in that, The movable part is configured to seal the opening of the connecting hole toward the second exposed surface when the piston head moves in the second direction, and to move or elastically deform in the second direction when the piston head moves in the first direction, thereby opening the valve.

6. The piston assembly according to claim 3, characterized in that, It has multiple connecting holes, and the multiple connecting holes can be sealed by the same moving part.

7. The piston assembly according to claim 3, characterized in that, It has a plurality of the aforementioned connecting holes and a plurality of the aforementioned movable parts, wherein the plurality of movable parts are configured to seal the plurality of the connecting holes one by one.

8. The piston assembly according to claim 7, characterized in that, Multiple of the movable parts are connected to the same fixed part.

9. The piston assembly according to claim 3, characterized in that, The piston head has a fixing hole, and the fixing part is at least partially interference-fitted into the fixing hole.

10. The piston assembly according to claim 1, characterized in that, The piston head includes a first base and a sealing ring disposed around the first base, and the valve is disposed on the base.

11. The piston assembly according to claim 1, characterized in that, It also includes a piston rod connected to the second exposed surface of the piston head, and the valve and the piston rod are arranged side by side.

12. The piston assembly according to claim 11, characterized in that, The piston rod is connected to the central region of the piston head, and the valve is positioned off-center from the central region of the piston head.

13. A pump module, characterized in that, The invention includes a piston assembly as described in any one of claims 1-12 and a body having a pump chamber inside, wherein the piston head is movably disposed in the pump chamber and divides the pump chamber into a first chamber and a second chamber located on opposite sides of the piston head, and the body is further provided with a first guide port for introducing or exporting fluid into the first chamber and a second guide port for introducing or exporting fluid into the second chamber, wherein the piston head is configured to drive fluid in the first chamber through the piston head into the second chamber by movement, or to drive fluid in the second chamber through the piston head into the first chamber.

14. An aerosol generating device, characterized in that... include: The storage module has a first storage chamber inside for storing the liquid matrix; An atomizing module includes a second storage chamber for storing a liquid matrix and an atomizing core for atomizing the liquid matrix to generate an aerosol; and A pump module includes a pump chamber and a piston assembly as described in any one of claims 1-12, wherein a piston head is movably disposed in the pump chamber and divides the pump chamber into a first chamber and a second chamber located on opposite sides of the piston head, the first chamber being connected to a first storage chamber, the second chamber being connected to a second storage chamber, and the pump module being configured to drive fluid in the first chamber through the piston head into the second chamber, or drive fluid in the second chamber through the piston head into the first chamber, by movement of the piston head.

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