Aerosol provision system, and fluid control structure, device, and heating control method thereof

Abstract

Embodiments of the present application disclose an aerosol provision system, and a fluid control structure, a device, and a heating control method thereof Wherein the fluid control structure comprises: a fluid reservoir chamber configured to contain a liquid aerosol-generating material; a preheating chamber; a first fluid passage arranged between the fluid reservoir chamber and the preheating chamber; a first adjusting component configured to be movable between an open position for opening the first fluid passage and a closed position for closing the first fluid passage. Through the scheme of the present application, the aerosol-generating material can be sufficiently and efficiently heated in the preheating chamber and in a closed environment, resulting in a good taste of the aerosol formed after reheating at a preheating temperature, and significantly improving the user's puffing experience.

Description

[0001] AEROSOL PROVISION SYSTEM, AND FLUID CONTROL STRUCTURE, DEVICE, AND HEATING CONTROL METHOD THEREOF

[0002] Technical Field

[0003] The present application relates to the field of aerosol provision, and particularly to an aerosol provision system, and a fluid control structure, a device, and a heating control method thereof.

[0004] Background

[0005] In the e-cigarette industry, an aerosol provision system refers to a system that contains an aerosol-generating material internally and generates aerosols by heating rather than combusting the aerosol-generating material (such as cartridges) for users to puff. An aerosol provision system typically comprises an aerosol provision device and a battery component for supplying power to the aerosol provision device, a heating element in the aerosol provision device is powered by the battery component to raise the temperature of the heating element, and then the temperature rise of the heating element is utilized to generate aerosols from the aerosol-generating material for a user to puff.

[0006] For users, the taste is one of the most important experiences when using e-cigarettes, at present, e-cigarette products only trigger the heating element to heat the liquid aerosol-generating material when a user performs a puffing action, due to the fact that the initial temperature of the liquid aerosol-generating material before aerosols are generated will have a certain impact on the generation and taste of the aerosols that enter the user's mouth cavity, when the initial temperature is too low, it will produce aerosols that make the user feel a poor taste, thereby affecting the user's experience.

[0007] Therefore, a new technical solution to solve one or more of the technical problems mentioned above is desired.

[0008] Summary

[0009] The present application aims to solve at least one of the technical problems present in the prior art. Therefore, the present application discloses an aerosol provision system, and a fluid control structure, a device, and a heating control method thereof, to solve the problems of low initial temperature of the aerosol-generating material in the prior art, which results in poor taste of the aerosols produced.

[0010] In accordance with a first aspect, there is provided a fluid control structure for an aerosol provision system, which comprises: a fluid reservoir chamber configured to contain a liquid aerosol-generating material; a preheating chamber; a first fluid passage arranged between the fluid reservoir chamber and the preheating chamber; a first adjusting component configured to be movable between an open position for opening the first fluid passage and a closed position for closing the first fluid passage.

[0011] Wherein, the fluid reservoir chamber replenishes the preheating chamber with liquid through the first fluid passage.

[0012] In one embodiment of the fluid control structure of the present application, the first adjusting component is a first valve.

[0013] In one embodiment of the fluid control structure of the present application, the first valve is a first one-way valve configured to, when in the open position, allow the aerosol-generating material to flow along a direction from the fluid reservoir chamber to the preheating chamber and prevent the aerosol-generating material from flowing along a direction from the preheating chamber to the fluid reservoir chamber.

[0014] In one embodiment of the fluid control structure of the present application, the fluid control structure further comprises: a second fluid passage arranged between the fluid reservoir chamber and the preheating chamber; along a direction from the fluid reservoir chamber to the preheating chamber, the fluid flux of the second fluid passage is lower than a predetermined flux value.

[0015] In one embodiment of the fluid control structure of the present application, the fluid control structure further comprises: a second one-way valve, configured to allow a fluid, in the second fluid passage, to flow along a direction from the preheating chamber to the fluid reservoir chamber and to prevent flow along a direction from the fluid reservoir chamber to the preheating chamber.

[0016] In one embodiment of the fluid control structure of the present application, the first one-way valve and / or the second one-way valve have deformable openings.

[0017] In one embodiment of the fluid control structure of the present application, the deformable openings are of a duckbill type.

[0018] In one embodiment of the fluid control structure of the present application, the first valve is an electric valve configured to move under electric control to open or close the first fluid passage; or, the first valve is a mechanical valve configured to move when pressed mechanically to open or close the first fluid passage.

[0019] In one embodiment of the fluid control structure of the present application, the preheating chamber is smaller than the fluid reservoir chamber.

[0020] In one embodiment of the fluid control structure of the present application, the fluid control structure further comprises: a heating element, configured to operate at a first power supply power to heat the aerosol-generating material in the preheating chamber to a first temperature; at the first temperature, the aerosol-generating material is not able to be atomized.

[0021] In one embodiment of the fluid control structure of the present application, the heating element is further configured to operate at a second power supply power to heat the aerosol-generating material in the preheating chamber to a second temperature; the second temperature is higher than the first temperature, and at the second temperature, the aerosol-generating material is able to be atomized.

[0022] In one embodiment of the fluid control structure of the present application, the fluid control structure further comprises a cartomizer, and the cartomizer comprises: a cartomizer housing defining and forming the preheating chamber; and the heating element.

[0023] In one embodiment of the fluid control structure of the present application, the cartomizer housing comprises: a first seal arranged between the fluid reservoir chamber and the preheating chamber, the first fluid passage being provided on the first seal.

[0024] In one embodiment of the fluid control structure of the present application, the cartomizer housing further comprises: a cartomizer top cover arranged near the fluid reservoir chamber; a cartomizer base arranged remote from the fluid reservoir chamber; a second seal located between the cartomizer top cover and the cartomizer base; and a bottom case arranged at a side of the cartomizer base remote from the cartomizer top cover.

[0025] In one embodiment of the fluid control structure of the present application, the maximum capacity of the fluid reservoir chamber is configured to be able to replenish the preheating chamber at least twice.

[0026] In accordance with a second aspect, there is provided a device for an aerosol provision system, where the device comprises the fluid control structure as mentioned above, and the device is a cartridge or an aerosol provision device.

[0027] In accordance with a third aspect, there is provided an aerosol provision system, which comprises: the fluid control structure mentioned above; a heating element, configured to generate heat when powered on, to heat the aerosol-generating material in the preheating chamber; a controller, configured to, when the system is in a preheating mode, control the heating element to operate at a first power supply power, to heat the aerosol-generating material in the preheating chamber to a first temperature; at the first temperature, the aerosol-generating material is not able to be atomized.

[0028] In one embodiment of the aerosol provision system of the present application, the controller is further configured to determine that the system is in the preheating mode according to a preheating start instruction input by a user; and / or; the controller is further configured to determine that the system is in the preheating mode when the time after the user finished the last puffing has reached a first predetermined time.

[0029] In one embodiment of the aerosol provision system of the present application, the controller is further configured to determine that the system is in the system exits the preheating mode according to a preheating end instruction input by a user; and / or; the controller is further configured to determine that the system exits the preheating mode when the duration that the user is not puffing has reached a second predetermined time.

[0030] In one embodiment of the aerosol provision system of the present application, the controller is further configured to, when the system is in a puffing mode, control the heating element to operate at a second power supply power, to heat the aerosol-generating material in the preheating chamber to a second temperature; the second temperature is higher than the first temperature, and at the second temperature, the aerosol-generating material is able to be atomized.

[0031] In one embodiment of the aerosol provision system of the present application, the controller is further configured to, according to puffing action of a user, determine that the system is in the puffing mode.

[0032] In one embodiment of the aerosol provision system of the present application, the first adjusting component is an electric valve; the system further comprises a sensor configured to detect the amount of the aerosol-generating material in the preheating chamber; the controller is configured to, when the amount of the aerosol-generating material is lower than a first predetermined value, control the electric valve to move to the open position, to open the first fluid passage, and when the amount of the aerosol-generating material is greater than a second predetermined value, control the electric valve to move to the closed position, to close the first fluid passage.

[0033] In accordance with a fourth aspect, there is provided a heating control method applied in the aerosol provision system mentioned above, which comprises: when the system is in the preheating mode, by the controller, controlling the heating element to operate at the first power supply power, to heat the aerosol-generating material in the preheating chamber to the first temperature; at the first temperature, the aerosol-generating material is not able to be atomized.

[0034] In one embodiment of the heating control method of the present application, the method further comprises: according to a preheating start instruction input by a user, by the controller, determining that the system is in the preheating mode; and / or; when the time after the user finished the last puffing has reached a first predetermined time, by the controller, determining that the system is in the preheating mode.

[0035] In one embodiment of the heating control method of the present application, the method further comprises: according to a preheating end instruction input by a user, by the controller, determining that the system exits the preheating mode; and / or; when the duration that the user is not puffing has reached a second predetermined time, by the controller, determining that the system exits the preheating mode.

[0036] In one embodiment of the heating control method of the present application, the method further comprises: when the system is in a puffing mode, by the controller, controlling the heating element to operate at a second power supply power, to heat the aerosol-generating material in the preheating chamber to a second temperature; the second temperature is higher than the first temperature, and at the second temperature, the aerosol-generating material is able to be atomized.

[0037] In one embodiment of the heating control method of the present application, the method further comprises: by the controller, determining that the system is in the puffing mode according to the puffing action of a user.

[0038] In one embodiment of the heating control method of the present application, the first adjusting component is an electric valve; the system further comprises a sensor configured to detect the amount of the aerosol-generating material in the preheating chamber; the method further comprises: by the controller, controlling the electric valve to move to the open position to open the first fluid passage when the amount of the aerosol-generating material is lower than a first predetermined value, and controlling the electric valve to move to the closed position to close the first fluid passage when the amount of the aerosol-generating material is greater than a second predetermined value.

[0039] The above one or more technical solutions of the present application have at least one or more beneficial effects as follows:

[0040] In an embodiment of the present application, a preheating chamber independent of the fluid reservoir chamber is provided, the preheating chamber is replenished by the fluid reservoir chamber, and the liquid aerosol-generating material is preheated in the preheating chamber, so that the aerosol formed by reheating at a preheating temperature has a good taste, significantly improving the user's puffing experience and taste.

[0041] The first fluid passage is a passage that is in communication with the fluid in the fluid reservoir chamber and the preheating chamber, however, if the first fluid passage remains in an open state, the fluid reservoir chamber and the preheating chamber would continuously exchange fluid, thereby exchanging heat through fluid exchange. This would lower the preheating temperature of the liquid aerosol-generating material in the preheating chamber, leading to energy waste, and the lower-temperature liquid aerosol-generating material would flow into the preheating chamber, lowering the preheating temperature of the aerosol generated after subsequent reheating, thereby negatively affecting the taste of the aerosol produced thereafter. Therefore, in the present application, a first adjusting component is further provided to control the opening and closing of the first fluid passage, and the first adjusting component is utilized to control the communication relationship between the fluid reservoir chamber and the preheating chamber. When the first adjusting component is utilized to open the first fluid passage, the liquid aerosol-generating material in the fluid reservoir chamber can pass through the first fluid passage and flow into the preheating chamber, completing the replenishment of the preheating chamber so as to preheat in the preheating chamber; when the first adjusting component is utilized to close the first fluid passage, the preheating chamber is a basically closed chamber, which can reduce or avoid heat exchange between the aerosol-generating material in the fluid reservoir chamber and the preheating chamber, thereby reducing or avoiding the preheating temperature in the preheating chamber from decreasing due to heat exchange with the fluid reservoir chamber, and reducing energy waste.

[0042] Further, the amount of fluid replenished each time to the preheating chamber is less than the maximum capacity of the fluid reservoir chamber. That is, in the present application, a preheating chamber that may accommodate a relatively small amount of liquid aerosol-generating material (relative to the fluid reservoir chamber) is provided. Due to the relatively small amount of liquid aerosol-generating material that needs to be preheated each time, even the heating capacity of the heating element is limited, the expected sufficient and efficient preheating may still be achieved. If the preheating chamber is not provided and all the liquid aerosol-generating material in the fluid reservoir chamber is directly preheated, there will be insufficient and inefficient preheating due to the large amount of liquid; after preheating all the liquid aerosol-generating material, a user may need multiple time periods to complete the inhalation, which will result in the waste of heating energy due to the natural cooling of the liquid. By providing a preheating chamber, sufficient and efficient preheating of the liquid aerosol-generating material has been achieved. In summary, in the present application, the liquid aerosol-generating material is sufficiently and efficiently heated in the preheating chamber containing a relatively small amount of aerosol-generating material and in a closed environment, resulting in a good taste of the aerosol formed after reheating at the preheating temperature, and significantly improving the user's puffing experience.

[0043] Furthermore, the first adjusting component in the present application is provided as a duckbill-type first one-way valve (which allows flowing from the fluid reservoir chamber to the preheating chamber, and prohibits flowing in the opposite direction) that can be opened or closed automatically according to the pressure relationship between the two chambers, when a certain negative pressure is formed due to the decrease of the aerosol or aerosol-generating material in the preheating chamber, the first one-way valve opens and the liquid flows from the fluid reservoir chamber to the preheating chamber for replenishment, and when the replenishment reaches a certain degree and the negative pressure decreases or disappears, the first one-way valve closes and the preheating chamber forms a closed preheating space. Thus, the first one-way valve adjusts its state automatically based on pressure, and the user does not need to perform other operations, and compared with hand-operated or electric valves, the structure is simpler, the operation is more simplified, and the reliability is higher.

[0044] Furthermore, a second fluid passage is provided in the present application to discharge gas from the preheating chamber to the fluid reservoir chamber. And the second fluid passage is arranged along the direction from the fluid reservoir chamber to the preheating chamber, with a fluid flux (referring to the flow rate through the cross-section of this passage per unit time) lower than a predetermined flux, so that the amount of liquid aerosol-generating material flowing from the fluid reservoir chamber to the preheating chamber through the second fluid passage is reduced while an gas passage is provided, thereby reducing heat exchange and accordingly reducing the waste of heating energy in the preheating chamber; at the same time, by providing the second fluid passage, when the pressure inside the preheating chamber is higher than that inside the fluid reservoir chamber, the gas in the preheating chamber can be discharged into the fluid reservoir chamber to balance the pressure between the two chambers and avoid the situation where the pressure inside the preheating chamber is too high and cannot be quickly reduced to below the pressure inside the fluid reservoir chamber when the user uses a lower suction force to puff, resulting in the inability to open the first one-way valve smoothly; that is to say, by providing the second fluid passage, when the gas is generated in the preheating chamber due to preheating or heating of the liquid aerosol-generating material, resulting in high pressure inside the preheating chamber, the second fluid passage can be utilized to allow the gas in the preheating chamber to flow into the fluid reservoir chamber, thereby balancing the pressure between the two chambers.

[0045] Furthermore, in the present application, by providing the second adjusting component as a duckbill-type second one-way valve (which allows flowing from the preheating chamber to the fluid reservoir chamber, and prohibits flowing in the opposite direction) that can be opened or closed automatically according to the pressure relationship between the two chambers, the state adjustment of this one-way valve can be achieved by utilizing the pressure inside the fluid reservoir chamber and the preheating chamber. When the pressure inside the preheating chamber exceeds that inside the fluid reservoir chamber to a certain extent, the second one-way valve opens, and gas is discharged from the preheating chamber to the fluid reservoir chamber. Thus, the second one-way valve adjusts its state automatically based on pressure, and compared with hand-operated or electric valves, the structure is simpler, the operation is more simplified, and the reliability is higher.

[0046] Furthermore, in the present application, the heating element is configured to heat the aerosol-generating material at different power supply powers through two power supply powers or through two sets of heating elements, or at an operate mode that provides the same power supply power to the same heating element but with different power supply durations, which not only saves power for the device but also ensures its normal operation, providing users with a better usage experience.

[0047] Additional aspects and advantages of the application will be partially described in the following description, some will become apparent from the following description, and others will be learned through the practice of the application. Brief Description of the Drawings

[0048] With reference to the accompanying drawings, the disclosure of the present application will become more understandable. Those skilled in the art can easily understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. Moreover, similar numbers in the figures are used to represent similar components, wherein:

[0049] Figure 1 is an exploded view of a fluid control structure provided in Embodiment One of the present application.

[0050] Figure 2 is a sectional view of the fluid control structure provided in Embodiment One of the present application.

[0051] Figure 3 is a structure schematic diagram of a cartomizer housing provided in Embodiment One of the present application.

[0052] Figure 4 is a three-dimensional structural schematic diagram of a first seal provided in Embodiment One of the present application.

[0053] Figure 5 is a sectional view of the first seal provided in Embodiment One of the present application.

[0054] Figure 6 is a schematic flowchart of a heating control method for an aerosol provision system provided in Embodiment Four of the present application.

[0055] Figure 7 is a structure schematic diagram of an aerosol provision system provided in an embodiment of the present application.

[0056] Reference Numerals:

[0057] 1 , fluid control structure;

[0058] 11, fluid reservoir chamber;

[0059] 12, preheating chamber;

[0060] 131 , first adjusting component; 132, second adjusting component;

[0061] 14, first seal;

[0062] 151 , first fluid passage; 152, second fluid passage; 153, third fluid passage;

[0063] 161 , cartridge housing; 1612, bottom case; 1613, second seal; 1614, cartomizer base; 16141 , insert portion; 1615, fourth seal; 162, heating element; 163, mouthpiece; 164, pin; 165, cartomizer top cover; 166, third seal;

[0064] 2, aerosol provision system;

[0065] 3, battery component;

[0066] 4, controller.

[0067] Detailed Description

[0068] The following describes some embodiments with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining technical principles and are not intended to limit the scope of protection.

[0069] As used herein, the term “delivery system” is intended to encompass systems that deliver at least one substance to a user in use, and includes: combustible aerosol provision systems, such as cigarettes, cigarillos, cigars, and tobacco for pipes or for roll-your-own or for make-your-own cigarettes (whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, tobacco substitutes or other smokable material); non-combustible aerosol provision systems that release compounds from an aerosol-generating material without combusting the aerosol-generating material, such as electronic cigarettes, tobacco heating products, and hybrid systems to generate aerosol using a combination of aerosol-generating materials; and aerosol-free delivery systems that deliver the at least one substance to a user orally, nasally, transdermally or in another way without forming an aerosol, including but not limited to, lozenges, gums, patches, articles comprising inhalable powders, and oral products such as oral tobacco which includes snus or moist snuff, wherein the at least one substance may or may not comprise nicotine.

[0070] A “combustible” aerosol provision system is one where a constituent aerosol-generating material of the aerosol provision system (or component thereof) is combusted or burned during use in order to facilitate delivery of at least one substance to a user.

[0071] In some embodiments, the delivery system is a combustible aerosol provision system, such as a system selected from the group consisting of a cigarette, a cigarillo and a cigar.

[0072] In some embodiments, the disclosure relates to a component for use in a combustible aerosol provision system, such as a filter, a filter rod, a filter segment, a tobacco rod, a spill, an aerosol-modifying agent release component such as a capsule, a thread, or a bead, or a paper such as a plug wrap, a tipping paper or a cigarette paper.

[0073] A “non-combustible” aerosol provision system is one where a constituent aerosol-generating material of the aerosol provision system (or component thereof) is not combusted or burned in order to facilitate delivery of at least one substance to a user.

[0074] In some embodiments, the delivery system is a non-combustible aerosol provision system, such as a powered non-combustible aerosol provision system.

[0075] In some embodiments, the non-combustible aerosol provision system is an electronic cigarette, also known as a vaping device or electronic nicotine delivery system (END), although it is noted that the presence of nicotine in the aerosol-generating material is not a requirement. In some embodiments, the non-combustible aerosol provision system is an aerosol-generating material heating system, also known as a heat-not-burn system. An example of such a system is a tobacco heating system.

[0076] In some embodiments, the non-combustible aerosol provision system is a hybrid system to generate aerosol using a combination of aerosol-generating materials, one or a plurality of which may be heated. Each of the aerosol-generating materials may be, for example, in the form of a solid, liquid or gel and may or may not contain nicotine. In some embodiments, the hybrid system comprises a liquid or gel aerosol-generating material and a solid aerosol-generating material. The solid aerosol-generating material may comprise, for example, tobacco or a non-tobacco product.

[0077] Typically, the non-combustible aerosol provision system may comprise a non-combustible aerosol provision device and a consumable for use with the non-combustible aerosol provision device.

[0078] In some embodiments, the disclosure relates to consumables comprising aerosol-generating material and configured to be used with non-combustible aerosol provision devices. These consumables are sometimes referred to as articles throughout the disclosure.

[0079] In some embodiments, the non-combustible aerosol provision system, such as a non-combustible aerosol provision device thereof, may comprise a power source and a controller. The power source may, for example, be an electric power source or an exothermic power source. In some embodiments, the exothermic power source comprises a carbon substrate which may be energised so as to distribute power in the form of heat to an aerosol-generating material or to a heat transfer material in proximity to the exothermic power source.

[0080] In some embodiments, the non-combustible aerosol provision system may comprise an area for receiving the consumable, an aerosol generator, an aerosol generation area, a housing, a mouthpiece, a filter and / or an aerosol-modifying agent.

[0081] In some embodiments, the consumable for use with the non-combustible aerosol provision device may comprise aerosol-generating material, an aerosol-generating material storage area, an aerosol-generating material transfer component, an aerosol generator, an aerosol generation area, a housing, a wrapper, a filter, a mouthpiece, and / or an aerosol-modifying agent.

[0082] In some embodiments, the delivery system is an aerosol-free delivery system that delivers at least one substance to a user orally, nasally, transdermally or in another way without forming an aerosol, including but not limited to, lozenges, gums, patches, articles comprising inhalable powders, and oral products such as oral tobacco which includes snus or moist snuff, wherein the at least one substance may or may not comprise nicotine. In some embodiments, the substance to be delivered may be an aerosol-generating material or a material that is not intended to be aerosolised. As appropriate, either material may comprise one or more active constituents, one or more flavours, one or more aerosol-former materials, and / or one or more other functional materials.

[0083] In some embodiments, the substance to be delivered comprises an active substance. The active substance as used herein may be a physiologically active material, which is a material intended to achieve or enhance a physiological response. The active substance may for example be selected from nutraceuticals, nootropics, psychoactives. The active substance may be naturally occurring or synthetically obtained. The active substance may comprise for example nicotine, caffeine, taurine, theine, vitamins such as B6 or B12 or C, melatonin, cannabinoids, or constituents, derivatives, or combinations thereof. The active substance may comprise one or more constituents, derivatives or extracts of tobacco, cannabis or another botanical.

[0084] In some embodiments, the active substance comprises nicotine. In some embodiments, the active substance comprises caffeine, melatonin or vitamin B12.

[0085] As noted herein, the active substance may comprise one or more constituents, derivatives or extracts of cannabis, such as one or more cannabinoids or terpenes.

[0086] As noted herein, the active substance may comprise or be derived from one or more botanicals or constituents, derivatives or extracts thereof. As used herein, the term "botanical" includes any material derived from plants including, but not limited to, extracts, leaves, bark, fibres, stems, roots, seeds, flowers, fruits, pollen, husk, shells or the like. Alternatively, the material may comprise an active compound naturally existing in a botanical, obtained synthetically. The material may be in the form of liquid, gas, solid, powder, dust, crushed particles, granules, pellets, shreds, strips, sheets, or the like.

[0087] Example botanicals are tobacco, eucalyptus, star anise, hemp, cocoa, cannabis, fennel, lemongrass, peppermint, spearmint, rooibos, chamomile, flax, ginger, ginkgo biloba, hazel, hibiscus, laurel, licorice (liquorice), matcha, mate, orange skin, papaya, rose, sage, tea such as green tea or black tea, thyme, clove, cinnamon, coffee, aniseed (anise), basil, bay leaves, cardamom, coriander, cumin, nutmeg, oregano, paprika, rosemary, saffron, lavender, lemon peel, mint, juniper, elderflower, vanilla, Wintergreen, beefsteak plant, curcuma, turmeric, sandalwood, cilantro, bergamot, orange blossom, myrtle, cassis, valerian, pimento, mace, damien, marjoram, olive, lemon balm, lemon basil, chive, carvi, verbena, tarragon, geranium, mulberry, ginseng, theanine, theacrine, maca, ashwagandha, damiana, guarana, chlorophyll, baobab or any combination thereof. The mint may be chosen from the following mint varieties: Mentha Arventis, Mentha c.v., Mentha niliaca, Mentha piperita, Mentha piperita citrata c.v., Mentha piperita c.v, Mentha spicata crispa, Mentha cardifolia, Memtha longifolia, Mentha suaveolens variegata, Mentha pulegium, Mentha spicata c.v. and Mentha suaveolens.

[0088] In some embodiments, the active substance comprises or is derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is tobacco. In some embodiments, the active substance comprises or derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is selected from eucalyptus, star anise, cocoa and hemp.

[0089] In some embodiments, the active substance comprises or derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is selected from rooibos and fennel.

[0090] In some embodiments, the substance to be delivered comprises a flavour. As used herein, the terms “flavour” and “flavourant” refer to materials which, where local regulations permit, may be used to create a desired taste, aroma or other somatosensorial sensation in a product for adult consumers. They may include naturally occurring flavour materials, botanicals, extracts of botanicals, synthetically obtained materials, or combinations thereof (e.g., tobacco, cannabis, licorice (liquorice), hydrangea, eugenol, Japanese white bark magnolia leaf, chamomile, fenugreek, clove, maple, matcha, menthol, Japanese mint, aniseed (anise), cinnamon, turmeric, Indian spices, Asian spices, herb, Wintergreen, cherry, berry, red berry, cranberry, peach, apple, orange, mango, clementine, lemon, lime, tropical fruit, papaya, rhubarb, grape, durian, dragon fruit, cucumber, blueberry, mulberry, citrus fruits, Drambuie, bourbon, scotch, whiskey, gin, tequila, rum, spearmint, peppermint, lavender, aloe vera, cardamom, celery, cascarilla, nutmeg, sandalwood, bergamot, geranium, khat, naswar, betel, shisha, pine, honey essence, rose oil, vanilla, lemon oil, orange oil, orange blossom, cherry blossom, cassia, caraway, cognac, jasmine, ylang-ylang, sage, fennel, wasabi, piment, ginger, coriander, coffee, hemp, a mint oil from any species of the genus Mentha, eucalyptus, star anise, cocoa, lemongrass, rooibos, flax, ginkgo biloba, hazel, hibiscus, laurel, mate, orange skin, rose, tea such as green tea or black tea, thyme, juniper, elderflower, basil, bay leaves, cumin, oregano, paprika, rosemary, saffron, lemon peel, mint, beefsteak plant, curcuma, cilantro, myrtle, cassis, valerian, pimento, mace, damien, marjoram, olive, lemon balm, lemon basil, chive, carvi, verbena, tarragon, limonene, thymol, camphene), flavour enhancers, bitterness receptor site blockers, sensorial receptor site activators or stimulators, sugars and / or sugar substitutes (e.g., sucralose, acesulfame potassium, aspartame, saccharine, cyclamates, lactose, sucrose, glucose, fructose, sorbitol, or mannitol), and other additives such as charcoal, chlorophyll, minerals, botanicals, or breath freshening agents. They may be imitation, synthetic or natural ingredients or blends thereof. They may be in any suitable form, for example, liquid such as an oil, solid such as a powder, or gas.

[0091] In some embodiments, the flavour comprises menthol, spearmint and / or peppermint. In some embodiments, the flavour comprises flavour components of cucumber, blueberry, citrus fruits and / or redberry. In some embodiments, the flavour comprises eugenol. In some embodiments, the flavour comprises flavour components extracted from tobacco. In some embodiments, the flavour comprises flavour components extracted from cannabis.

[0092] In some embodiments, the flavour may comprise a sensate, which is intended to achieve a somatosensorial sensation which are usually chemically induced and perceived by the stimulation of the fifth cranial nerve (trigeminal nerve), in addition to or in place of aroma or taste nerves, and these may include agents providing heating, cooling, tingling, numbing effect. A suitable heat effect agent may be, but is not limited to, vanillyl ethyl ether and a suitable cooling agent may be, but not limited to eucolyptol, WS-3.

[0093] Aerosol-generating material is a material that is capable of generating aerosol, for example when heated, irradiated or energized in any other way. Aerosol-generating material may, for example, be in the form of a solid, liquid or gel which may or may not contain an active substance and / or flavourants. In some embodiments, the aerosol-generating material may comprise an “amorphous solid””, which may alternatively be referred to as a “monolithic solid” (i.e. non-fibrous). In some embodiments, the amorphous solid may be a dried gel. The amorphous solid is a solid material that may retain some fluid, such as liquid, within it. In some embodiments, the aerosol-generating material may for example comprise from about 50wt%, 60wt% or 70wt% of amorphous solid, to about 90wt%, 95wt% or 100wt% of amorphous solid.

[0094] The aerosol-generating material may comprise one or more active substances and / or flavours, one or more aerosol-former materials, and optionally one or more other functional material.

[0095] The aerosol-former material may comprise one or more constituents capable of forming an aerosol. In some embodiments, the aerosol-former material may comprise one or more of glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1 ,3-butylene glycol, erythritol, meso-Erythritol, ethyl vanillate, ethyl laurate, a diethyl suberate, triethyl citrate, triacetin, a diacetin mixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, lauryl acetate, lauric acid, myristic acid, and propylene carbonate.

[0096] The one or more other functional materials may comprise one or more of pH regulators, colouring agents, preservatives, binders, fillers, stabilizers, and / or antioxidants.

[0097] The material may be present on or in a support, to form a substrate. The support may, for example, be or comprise paper, card, paperboard, cardboard, reconstituted material, a plastics material, a ceramic material, a composite material, glass, a metal, or a metal alloy. In some embodiments, the support comprises a susceptor. In some embodiments, the susceptor is embedded within the material. In some alternative embodiments, the susceptor is on one or either side of the material.

[0098] A consumable is an article comprising or consisting of aerosol-generating material, part or all of which is intended to be consumed during use by a user. A consumable may comprise one or more other components, such as an aerosol-generating material storage area, an aerosol-generating material transfer component, an aerosol generation area, a housing, a wrapper, a mouthpiece, a filter and / or an aerosol-modifying agent. A consumable may also comprise an aerosol generator, such as a heater, that emits heat to cause the aerosol-generating material to generate aerosol in use. The heater may, for example, comprise combustible material, a material heatable by electrical conduction, or a susceptor.

[0099] A susceptor is a material that is heatable by penetration with a varying magnetic field, such as an alternating magnetic field. The susceptor may be an electrically-conductive material, so that penetration thereof with a varying magnetic field causes induction heating of the heating material. The heating material may be magnetic material, so that penetration thereof with a varying magnetic field causes magnetic hysteresis heating of the heating material. The susceptor may be both electrically-conductive and magnetic, so that the susceptor is heatable by both heating mechanisms. The device that is configured to generate the varying magnetic field is referred to as a magnetic field generator, herein.

[0100] An aerosol-modifying agent is a substance, typically located downstream of the aerosol generation area, that is configured to modify the aerosol generated, for example by changing the taste, flavour, acidity or another characteristic of the aerosol. The aerosol-modifying agent may be provided in an aerosol-modifying agent release component, that is operable to selectively release the aerosol-modifying agent. The aerosol-modifying agent may, for example, be an additive or a sorbent. The aerosol-modifying agent may, for example, comprise one or more of a flavourant, a colourant, water, and a carbon adsorbent. The aerosol-modifying agent may, for example, be a solid, a liquid, or a gel. The aerosol-modifying agent may be in powder, thread or granule form. The aerosol-modifying agent may be free from filtration material.

[0101] An aerosol generator is an apparatus configured to cause aerosol to be generated from the aerosol-generating material. In some embodiments, the aerosol generator is a heater configured to subject the aerosol-generating material to heat energy, so as to release one or more volatiles from the aerosol-generating material to form an aerosol. In some embodiments, the aerosol generator is configured to cause an aerosol to be generated from the aerosol-generating material without heating. For example, the aerosol generator may be configured to subject the aerosol-generating material to one or more of vibration, increased pressure, or electrostatic energy.

[0102] Aerosol delivery systems may also be referred to as vapour delivery systems such as nebulisers or e-cigarettes. Throughout the following description the term “e-cigarette” or “electronic cigarette” may sometimes be used, but it will be appreciated this term may be used interchangeably with aerosol delivery system I device and electronic aerosol delivery system I device. Furthermore, and as is common in the technical field, the terms "aerosol" and "vapour", and related terms such as "vaporise", "volatilise" and "aerosolise", may generally be used interchangeably.

[0103] Aerosol delivery systems (e-cigarettes) often, though not always, comprise a modular assembly comprising a reusable device part and a replaceable (disposable / consumable) cartridge part. Often, the replaceable cartridge part will comprise the aerosol-generating material and the vaporiser (which may collectively be called a “cartomizer”) and the reusable device part will comprise the power provision (e.g. rechargeable power source) and control circuitry. It will be appreciated these different parts may comprise further elements depending on functionality. For example, the reusable device part will often comprise a user interface for receiving user input and displaying operating status characteristics, and the replaceable cartridge device part in some cases comprises a temperature sensor for helping to control temperature. Cartridges are electrically and mechanically coupled to the control unit for use, for example using a screw thread, bayonet, or magnetic coupling with appropriately arranged electrical contacts. When the aerosol-generating material in a cartridge is exhausted, or the user wishes to switch to a different cartridge having a different aerosol-generating material, the cartridge may be removed from the reusable part and a replacement cartridge attached in its place. Systems and devices conforming to this type of two-part modular configuration may generally be referred to as two-part systems / devices.

[0104] It is common for electronic cigarettes to have a generally elongate shape. For the sake of providing a concrete example, certain embodiments of the disclosure will be taken to comprise this kind of generally elongate two-part system employing disposable cartridges. However, it will be appreciated that the underlying principles described herein may equally be adopted for different configurations, for example single-part systems or modular systems comprising more than two parts, refillable devices and single-use disposables, as well as other overall shapes, for example based on so-called box-mod high performance devices that typically have a boxier shape. More generally, it will be appreciated certain embodiments of the disclosure are based on aerosol delivery systems which are operationally configured to provide functionality in accordance with the principles described herein and the constructional aspects of systems configured to provide the functionality in accordance with certain embodiments of the disclosure is not of primary significance.

[0105] As described in the background, for users, the taste is one of the most important experiences when using e-cigarettes, at present, e-cigarette products only trigger the heating element to heat the aerosol-generating material when the user performs a puffing action, due to that the initial temperature of the aerosol-generating material before aerosols are generated will have a certain impact on the generation and taste of the aerosols that enter the user's mouth cavity, when the initial temperature is too low, it will produce aerosols that make the user perceive a poor taste, thereby affecting the user's puffing experience.

[0106] Embodiment One

[0107] Figure 1 shows the component diagram of a fluid control structure of the present application. It shows the composition of the fluid control structure in a simplified manner, where each part is not drawn to scale and irrelevant parts for understanding the present application are omitted.

[0108] The first aspect of an embodiment of the present application discloses a fluid control structure 1 for an aerosol provision system 2, and the fluid control structure 1 comprises: a fluid reservoir chamber 11 configured to contain a liquid aerosol-generating material; a preheating chamber 12; a first fluid passage 151 arranged between the fluid reservoir chamber 11 and the preheating chamber 12. The liquid aerosol-generating material in the fluid reservoir chamber 11 may flow through the first fluid passage 151 to the preheating chamber 12 for replenishment, and be preheated in the preheating chamber 12. The provision of the preheating chamber 12 achieves sufficient and effective preheating. This makes the aerosol generated by subsequent reheating have a good taste due to its high preheating temperature based on which the reheating is carried out, which can significantly improve the user's puffing experience.

[0109] In a further embodiment of the present application, the amount of liquid aerosol-generating material replenished each time to the preheating chamber 12 is less than the maximum capacity of the fluid reservoir chamber 11. In one embodiment, the accommodating space of the preheating chamber 12 may be provided to be smaller than that of the fluid reservoir chamber 11 , so that the preheating chamber 12 is a small chamber relative to the fluid reservoir chamber 11. In an alternative embodiment, the accommodating space of the preheating chamber 12 may be greater than or equal to that of the fluid reservoir chamber 11 , but the amount of liquid replenished from the fluid reservoir chamber 11 to the preheating chamber 12 each time may be set to be less than the maximum capacity of the fluid reservoir chamber 11. Specifically, the maximum capacity of the fluid reservoir chamber 11 is configured to be able to replenish the preheating chamber 12 at least twice, that is to say, the maximum capacity of the fluid reservoir chamber 11 may achieve the replenishment of the preheating chamber 12 twice or more. That is, in the present application, a preheating chamber 12 that accommodates a relatively small amount of liquid aerosol-generating material (relative to the fluid reservoir chamber 11) is provided for achieving preheating. Due to the relatively small amount of liquid aerosol-generating material that needs to be preheated each time, even the heating capacity of the heating element 162 for preheating is limited, the expected sufficient and efficient preheating may still be achieved. It can be foreseen that if the preheating chamber 12 is not provided and all the liquid aerosol-generating material in the fluid reservoir chamber 11 is directly preheated, there will be insufficient and inefficient preheating due to the large amount of liquid; after preheating all the liquid aerosol-generating material, a user may exhaust it in multiple time periods, which will result in the waste of heating energy due to the natural cooling of the liquid. The provision of the preheating chamber 12 achieves sufficient and effective preheating. This makes the aerosol formed by reheating at the preheating temperature have a good taste, which can significantly improve the user's puffing experience.

[0110] But if the first fluid passage 151 remains in the open state, it would lead to energy waste for the following reason: with the first fluid passage 151 open all the time, the fluid reservoir chamber 11 and the preheating chamber 12 would continuously exchange fluid, thereby exchanging heat through fluid exchange. This would lower the temperature of the liquid aerosol-generating material in the preheating chamber 12, leading to energy waste, and negatively affecting the taste of the aerosol produced thereafter. To address this, the fluid control structure 1 of the present application further comprises a first adjusting component 131 configured to be movable between an open position for opening the first fluid passage 151 and a closed position for closing the first fluid passage 151. That is, in the present application, by providing the first adjusting component 131 , the opening and closing control of the first fluid passage 151 can be achieved, to control the communication relationship between the fluid reservoir chamber 11 and the preheating chamber 12: when the first adjusting component 131 is used to open the first fluid passage 151 , the liquid aerosol-generating material in the fluid reservoir chamber 11 can pass through the first fluid passage 151 and flow into the preheating chamber 12, allowing for preliminary heating to take place within the preheating chamber 12; when the first adjusting component 131 is used to close the first fluid passage 151 , heat exchange between the aerosol-generating material in the fluid reservoir chamber 11 and the preheating chamber 12 can be avoided to the greatest extent possible, thereby avoiding lowering the temperature in the preheating chamber 12 due to heat exchange with the fluid reservoir chamber 11 , thereby reducing energy waste.

[0111] Specifically, it may be configured such that when the amount of liquid aerosol-generating material in the preheating chamber 12 falls below a predetermined threshold, i.e., when replenishment is required (before user's puffing), the first adjusting component 131 is adjusted to open the first fluid passage 151 , which allows an amount of liquid aerosol-generating material less than the maximum capacity of the fluid reservoir chamber 11 to flow into the preheating chamber 12, and following completion of the replenishing process, the first adjusting component 131 is adjusted to close the first fluid passage 151 , subsequently, the liquid aerosol-generating material in the preheating chamber 12 is preheated by the heating element 162.

[0112] It should be noted that in the embodiments of the present application, there are no specific limitations on the structure, working principle, and adjustment method of the first adjusting component 131 , and users may configure these aspects according to actual needs without departing from the inventive concept of the present application. As an example rather than a limiting illustration, the first adjusting component 131 in an embodiment of the present application may be moved to different positions through sliding, rotation, or other means to adjust the opening or closing of the first fluid passage 151. As an example rather than a limiting illustration, the first adjusting component 131 in an embodiment of the present application may be manually controlled to move to open or close the first fluid passage 151 by using operating mechanisms such as levers, pulleys, and handles, etc.; or may be moved to open or close the first fluid passage 151 by electric control methods such as buttons, voice recognition, facial recognition, fingerprint identification, sensor detection, etc. In an alternative embodiment, the first adjusting component 131 may achieve the required movement without manual or electrical actuation, such as through the duckbill-type one-way valve structure described below.

[0113] In a specific embodiment of the present application, the first adjusting component 131 adopts a valve structure, here referred to as a first valve, where through the opening or closing of the first valve, the opening or closing of the first fluid passage 151 is achieved. When the first adjusting component 131 is a valve structure, it enables more convenient control. Specifically, the first adjusting component 131 may be a flow control valve which can ensure that an amount of aerosol-generating material corresponding to the volume of the preheating chamber 12 flows from the fluid reservoir chamber 11 into the preheating chamber 12 within a set time period before a user's puffing, meanwhile the heating element 162 may be cooperatively configured to operate with either a fixed heating duration or heating power, that is, it can ensure that the volume of aerosol-generating material heated by the heating element 162 with the same heating power and heating duration is the same each time, thereby achieving that the aerosol-generating material initially heated in the preheating chamber 12 before user's each puff is heated to the same temperature, thereby ensuring the taste of user's each puff. Of course, in the present application, the first adjusting component 131 may also be a valve structure such as a butterfly valve, ball valve, or plug valve, as long as it can achieve the opening or closing of the first fluid passage 151 .

[0114] In one embodiment of the present application, further, the first valve is a first one-way valve configured to, when in the open position, allow the liquid aerosol-generating material to flow along a direction from the fluid reservoir chamber 11 to the preheating chamber 12 and prevent the aerosol-generating material from flowing along a direction from the preheating chamber 12 to the fluid reservoir chamber 11, to achieve the replenishment of the preheating chamber 12.

[0115] In a further embodiment of the present application, the first one-way valve has a deformable opening; that is, the first one-way valve may be an elastic structure, specifically, the first one-way valve may open or close the opening through its own elastic deformation, thereby achieving the opening or closing of the first fluid passage 151.

[0116] It should be understood that, this deformable opening may specifically be deformed by the pressure difference between the fluid reservoir chamber 11 and the preheating chamber 12, in particular, when the pressure inside the fluid reservoir chamber 11 is higher than that inside the preheating chamber 12, the opening on the first one-way valve begins to deform and open under the pressure drive in the fluid reservoir chamber 11 , and when the pressure inside the fluid reservoir chamber 11 is lower than that in the preheating chamber 12, the opening on the first one-way valve remains closed.

[0117] It should be noted that in an embodiment of the present application, the deformable opening is of a duckbill type, namely an opening structure with two symmetrically arranged elastic flaps; at this time, the duckbill-type opening on the first one-way valve is arranged towards the preheating chamber 12, that is, a funnel shape will be formed at the connection between the first one-way valve and the fluid reservoir chamber 11 , when the pressure inside the preheating chamber 12 is lower than that in the fluid reservoir chamber 11 , the duckbill-type opening on the first one-way valve will be opened (the two flaps will separate in a direction away from each other), allowing the aerosol-generating material in the fluid reservoir chamber 11 to flow into the preheating chamber 12, and when the pressure inside the preheating chamber 12 is higher than that in the fluid reservoir chamber 11 , the duckbill-type opening on the first one-way valve will be compressed by the aerosol-generating material or atomized aerosol in the preheating chamber 12 (the two flaps will move in a direction towards each other and remain closed), thereby preventing the aerosol-generating material in the fluid reservoir chamber 11 from flowing into the preheating chamber 12.

[0118] Further, the deformable opening may be composed of three or more flap structures, and the specific working principle and arrangement mode may refer to the duckbill-type opening mentioned above. Further, the deformable opening may be a single flap structure, which may be an elastic structure, or a rigid structure, as long as it can move and achieve the opening or closing of the opening, specifically, the single flap structure of the first one-way valve may be arranged at the connection between the fluid reservoir chamber 11 and the first fluid passage 151 , and this single flap structure is located on the outer side of the fluid reservoir chamber 11 (which may be on the outer wall of the fluid reservoir chamber 11), and may be slightly larger than the hole shaped structure at the connection between the fluid reservoir chamber 11 and the first fluid passage 151 , therefore, when the pressure inside the preheating chamber 12 is lower than the pressure inside the fluid reservoir chamber 11 , the flap opening on the first one-way valve will be opened (the flap undergoes elastic deformation or moves and opens towards the preheating chamber 12), then the aerosol-generating material in the fluid reservoir chamber 11 flows into the preheating chamber 12, when the pressure inside the preheating chamber 12 is higher than the pressure inside the fluid reservoir chamber 11 , the flap on the first one-way valve will be compressed and closed by the pressure inside the preheating chamber 12 (the flap is compressed against the outer wall of the fluid reservoir chamber 11 by the pressure inside the preheating chamber 12, and blocks the hole shaped structure at the connection between the fluid reservoir chamber 11 and the first fluid passage 151), thereby preventing the aerosol-generating material in the fluid reservoir chamber 11 from flowing into the preheating chamber 12.

[0119] Gas and bubbles may be generated in the preheating chamber 12 due to various reasons, excessive air pressure can have adverse effects, requiring timely gas discharge, for example, if the air pressure inside the preheating chamber 12 is too high, the liquid aerosol-generating material in the fluid reservoir chamber 11 cannot flow smoothly into the preheating chamber 12 through the first one-way valve. Therefore, in an embodiment of the present application, the fluid control structure 1 further comprises a second fluid passage 152 arranged between the fluid reservoir chamber 11 and the preheating chamber 12 to achieve gas discharge from the preheating chamber 12 to the fluid reservoir chamber 11. In order to reduce the uncontrollable impact of the provision of the second fluid passage 152 on the liquid flow between the fluid reservoir chamber 11 and the preheating chamber 12, for example, if a large amount of liquid aerosol-generating material flows from the fluid reservoir chamber 11 through the second fluid passage 152 to the preheating chamber 12, it will cause heat exchange between the two chambers, resulting in waste of heating energy in the preheating chamber 12. Therefore, in an embodiment of the present application, along a direction from the fluid reservoir chamber 11 to the preheating chamber 12, the fluid flux of the second fluid passage 152 is lower than a predetermined flux value. The fluid flux here refers to the flow rate through the cross-section of the second fluid passage 152 per unit time. Specifically, it may refer to the flow rate at the minimum cross-section or the flow rate at the maximum cross-section of the second fluid passage 152, which is not specifically limited in the present application. The predetermined flux value may be infinitely close to zero, that is, in the direction from the fluid reservoir chamber 11 to the preheating chamber 12, the fluid flux of the second fluid passage 152 is close to zero.

[0120] It should be noted that in an embodiment of the present application, there are no specific limitations on the structure of the second fluid passage 152, etc., and users may configure it according to actual needs without departing from the inventive concept of the present application. As an example rather than a limiting illustration, the second fluid passage 152 in an embodiment of the present application may be configured to remain in the open state, and the cross-sectional area (such as the minimum or maximum cross-sectional area) of the second fluid passage 152 is less than a predetermined value, thereby achieving a fluid flux of the second fluid passage 152 in the direction from the fluid reservoir chamber 11 to the preheating chamber 12 lower than the predetermined flux value. But such a configuration may also result in slow gas discharge.

[0121] In one alternative embodiment, referring to Figure 1 , Figure 2, Figure 4, and Figure 5, the fluid control structure 1 further comprises a second adjusting component 132, wherein the second adjusting component 132 is preferably a second one-way valve configured to allow fluid in the second fluid passage 152 to flow in the direction from the preheating chamber 12 to the fluid reservoir chamber 11 and prevent flowing in the direction from the fluid reservoir chamber 11 to the preheating chamber 12, thereby achieving gas discharge from the preheating chamber 12 to the fluid reservoir chamber 11 and preventing the liquid aerosol-generating material from flowing out of the fluid reservoir chamber 11 to the preheating chamber 12.

[0122] Specifically, the second one-way valve has a deformable opening; that is, the second one-way valve may be an elastic structure, specifically, the second one-way valve may open or close the opening through its own elastic deformation, then achieve the opening or closing of the second fluid passage 152.

[0123] It should be understood that this deformable opening may specifically be deformed by the pressure difference between the fluid reservoir chamber 11 and the preheating chamber 12. Specifically, when the gas in the preheating chamber 12 increases and the pressure inside the preheating chamber 12 is higher than that in fluid reservoir chamber 11 (reaching a certain pressure difference), the opening on the second one-way valve begins to deform and open under the pressure drive in the preheating chamber 12. When the gas in the preheating chamber 12 is discharged and the pressure drops, the opening on the second one-way valve closes. The second one-way valve based on this configuration may automatically adjust its open and closed state according to the pressure difference to discharge gas, and has a simple structure and does not require manual operation by the user. With continued reference to Figure 1 , Figure 2, Figure 4, and Figure 5, it should be noted that in an embodiment of the present application, the deformable opening of the second one-way valve is a duckbill-type opening structure, namely an opening structure with two symmetrically arranged elastic flaps. At this time, the duckbill-type opening on the second one-way valve is arranged towards the fluid reservoir chamber 11 , that is, a funnel shape will be formed at the connection between the second one-way valve and the preheating chamber 12, when the pressure inside the preheating chamber 12 is higher than that in the fluid reservoir chamber 11, the duckbill-type opening on the second one-way valve will be opened (the two flaps will separate in a direction away from each other), allowing the atomized aerosol in the preheating chamber 12 to flow into the fluid reservoir chamber 11 , and when the pressure inside the preheating chamber 12 is lower than that in the fluid reservoir chamber 11 , the duckbill-type opening on the second one-way valve will be compressed by the aerosol-generating material in the fluid reservoir chamber 11 (the two flaps will move in a direction towards each other and remain closed), thereby preventing the aerosol-generating material in the preheating chamber 12 from flowing into the fluid reservoir chamber 11.

[0124] Further, the deformable opening may be composed of three or more flap structures, and the specific working principle and arrangement mode may refer to the duckbill-type opening mentioned above.

[0125] Further, the deformable opening may be a single flap structure, which can be an elastic structure, or a rigid structure, as long as it can move and achieve the opening or closing of the opening, specifically, the single flap structure on the second one-way valve may be arranged at the connection between the fluid reservoir chamber 11 and the second fluid passage 152, and this single flap structure is located on the inner side of the fluid reservoir chamber 11 (which may be on the inner wall of the fluid reservoir chamber 11), and can be slightly larger than the hole shaped structure at the connection between the fluid reservoir chamber 11 and the second fluid passage 152, therefore, when the pressure inside the preheating chamber 12 is higher than the pressure inside the fluid reservoir chamber 11 , the flap opening on the second one-way valve will be opened (the flap undergoes elastic deformation, or moves and opens towards inside the fluid reservoir chamber 11), then the atomized aerosol in the preheating chamber 12 flows into the fluid reservoir chamber 11 , when the pressure inside the preheating chamber 12 is lower than the pressure inside the fluid reservoir chamber 11, the flap on the second one-way valve will be compressed and closed by the pressure inside the fluid reservoir chamber 11 (the flap is compressed against the inner wall of the fluid reservoir chamber 11 by the pressure inside the fluid reservoir chamber 11 , and blocks the hole shaped structure at the connection between the fluid reservoir chamber 11 and the second fluid passage 152), thereby preventing the atomized aerosol in the preheating chamber 12 from flowing into the fluid reservoir chamber 11. It should be noted that in an embodiment of the present application, the first adjusting component 131 may be provided as a first one-way valve that opens automatically according to the pressure difference, and the second adjusting component 132 may be provided as a second one-way valve that opens automatically according to the pressure difference. It can be understood that if the two one-way valves are selected to have the same or similar model, and allow the fluid to flow only in opposite directions, when the pressure inside the fluid reservoir chamber 11 is high and the pressure inside the preheating chamber 12 is low, the first one-way valve will open, the second one-way valve will close, and the fluid reservoir chamber 11 will replenish the preheating chamber 12 with liquid; when the pressure inside the fluid reservoir chamber 11 is low and the pressure inside the preheating chamber 12 is high, the second one-way valve will open, the first one-way valve will close, and the preheating chamber 12 will discharge gas to the fluid reservoir chamber 11.

[0126] In another alternative embodiment, the second adjusting component 132 may be a structure that can prevent liquid from passing through but allow gas to pass through, such as a waterproof gas-permeable membrane, generally, the waterproof gas-permeable membrane has through holes with a diameter larger than the molecular diameter of the gas and smaller than the molecular diameter of the liquid.

[0127] Further, a gap is provided between the first adjusting component 131 and the second adjusting component 132 to prevent the aerosol-generating material from being affected by the flow of the atomized aerosol from the preheating chamber 12 to the fluid reservoir chamber 11 at the position of the second adjusting component 132 when flowing from the fluid reservoir chamber 11 to the preheating chamber 12 at the position of the first adjusting component 131 , that is, the smoothness of the flow of the aerosol-generating material and the aerosol in the first fluid passage 151 and the second fluid passage 152 is improved, and phenomena such as eddies and turbulence generated during the flow of the fluid aerosol-generating material and the aerosol are reduced.

[0128] In some embodiments of the present application, there may be at least two first adjusting components 131 and / or there may be at least two second adjusting components 132, that is, redundant provision of the first adjusting components 131 and / or the second adjusting components 132 is achieved, at the same time, by arranging at least two first adjusting components 131 in the first fluid passage 151 and at least two second adjusting components 132 in the second fluid passage 152, it can be ensured that when one of the first adjusting components 131 and / or one of the second adjusting component 132 fails, the first fluid passage 151 and / or the second fluid passage 152 can still operate normally.

[0129] It should be noted that, in addition to the valves automatically opened based on pressure mentioned above, in an embodiment of the present application, the first one-way valve and / or the second one-way valve may be electric valves configured to move under electric control to open or close the first fluid passage 151 or the second fluid passage 152; or, the first valve and / or the second valve are mechanical valves configured to move when mechanically pressed to open or close the first fluid passage 151 or the second fluid passage 152; the specific operation method may be selected according to actual usage needs.

[0130] In an embodiment of the present application, the fluid control structure 1 further comprises a heating element 162 to preheat the liquid aerosol-generating material inside the preheating chamber 12. It should be noted that in the embodiments of the present application, there are no specific limitations on the position, and type, etc. of the heating element 162, and users may configure it according to actual needs without departing from the inventive concept of the present application. As an example rather than a limiting illustration, as shown in the figures, the heating element 162 may be arranged in the preheating chamber 12 to preheat the liquid aerosol-generating material contained within the preheating chamber 12. The heating element 162 may specifically be a ceramic atomizing element or other atomizing elements. In an alternative embodiment, the heating element 162 may also be arranged outside the preheating chamber 12, such as a heating wire surrounding the outer wall of the preheating chamber 12, to preheat the liquid inside the preheating chamber 12 by heating the entire preheating chamber 12.

[0131] It should be noted that the preheating mentioned in the embodiments of the present application comprises heating the liquid aerosol-generating material to a first temperature at which it is completely non-atomized, or it may also comprise heating the liquid aerosol-generating material to a first temperature at which the atomized amount is below a predetermined threshold. The present application does not impose strict restrictions on this, as long as it can be distinguished from the heating temperature during normal puffing. To achieve preheating, in the present application, the preheating may be carried out by configuring the value and / or duration of the power supply power applied to the heating element 162, generally, the value of the power supply power corresponding to preheating is lower than the power required for heating during normal puffing, the duration of the power supply power corresponding to preheating is shorter than the duration of the power supply power required for heating during normal puffing, or both are satisfied at the same time. In a specific embodiment, the heating element 162 is configured to operate at a first power supply power to heat the aerosol-generating material in the preheating chamber 12 to a first temperature; at the first temperature, the aerosol-generating material is not able to be atomized.

[0132] As mentioned earlier, the preheated aerosol-generating material will be reheated to atomize into an aerosol for a user to take a puff normally. In some embodiments of the present application, a separate heating chamber (different from and in communication with the preheating chamber 12) and heating element 162 may be provided for reheating.

[0133] In an alternative embodiment, the heating chamber shares the preheating chamber 12, that is, reheating is performed inside the preheating chamber 12. In this embodiment, another heating element 162 different from the heating element 162 used for preheating may be provided for reheating, and this heating element 162 used for reheating may have higher heating capacity, such as being able to withstand a higher power supply power, having larger atomization area, etc.

[0134] To simplify the structure, in another alternative embodiment of the present application, the heating chamber shares the preheating chamber 12, that is, reheating is performed inside the preheating chamber 12, and preheating and reheating are carried out through the same heating element 162.

[0135] The temperature required for preheating and reheating is different, therefore, the heating element 162 is further configured to operate at a second power supply power to heat the aerosol-generating material in the preheating chamber 12 to a second temperature; the second temperature is higher than the first temperature, and at the second temperature, the aerosol-generating material is able to be atomized. In a specific embodiment, the aerosol-generating material being able to be atomized means that the atomized amount exceeds a predetermined threshold.

[0136] The present application configures the heating element 162 to have an operation mode with two power supply powers, which can achieve preheating in energy-saving mode and reheating to ensure user's normal puffing.

[0137] It should be noted that, in addition to the different power supply power configurations mentioned above, the present application may also realize the first temperature and the second temperature respectively by configuring the heating element 162 with different heating durations. For example, the same heating element 162 configured with the same power supply power is used, when the heating duration is short, the aerosol-generating material in the preheating chamber 12 may be heated to the first temperature, and when the heating duration is long, the aerosol-generating material in the preheating chamber 12 may be heated to the second temperature.

[0138] In the present application, it is also possible to realize the first temperature and the second temperature separately by configuring both the power supply power and heating duration to be different.

[0139] It should be noted that in one embodiment of the present application, the fluid control structure 1 further comprises a cartomizer comprising a cartomizer housing defining a preheating chamber 12 and the heating element 162. Wherein, the heating element 162 may be directly mounted inside the preheating chamber 12 or arranged to be formed on the cartomizer housing.

[0140] With continued reference to Figure 1, Figure 2, Figure 4 and Figure 5, further, the cartomizer housing further comprises a first seal 14 disposed between the fluid reservoir chamber 11 and the preheating chamber 12, and by providing the first seal 14, it can prevent the aerosol-generating material from flowing to other positions inside the cartomizer housing and reduce the probability of leakage, infiltration, etc., wherein the first seal 14 may be a structure such as a rubber pad, plastic pad, sponge pad, etc. Wherein at least a portion of the first fluid passage 151 and at least a portion of the second fluid passage 152 are both provided on the first seal 14; meanwhile, the first adjusting component 131 and the second adjusting component 132 may also be mounted on the first seal 14.

[0141] It should be noted that in the embodiments of the present application, there are no specific limitations on the cartomizer housing, and users may configure it according to actual needs without departing from the inventive concept of the present application. As an exemplary rather than restrictive explanation, the cartomizer housing in an embodiment of the present application further comprises: a cartomizer top cover 165 arranged near the fluid reservoir chamber 11 , a cartomizer base 1614 arranged away from the fluid reservoir chamber 11 , and a bottom case 1612 arranged on the side of the cartomizer base 1614 away from the cartomizer top cover 165.

[0142] It should be noted that in some embodiments of the present application, portions of the first fluid passage 151 and the second fluid passage 152 may be formed on the cartomizer top cover 165.

[0143] Further, the cartomizer housing further comprises a second seal 1613 located between the cartomizer top cover 165 and the cartomizer base 1614, and the second seal 1613 can further ensure the sealing of the entire cartomizer housing.

[0144] Further, the cartomizer housing further comprises a third seal 166 located between the cartomizer top cover 165 and the heating element 162; that is to say, the top and side walls of the cartomizer top cover 165 may be in seal fit with the fluid reservoir chamber 11 through the first seal 14, and the bottom or side walls of the cartomizer top cover 165 may be in seal fit with the heating element 162 through the third seal 166.

[0145] Further, a through-hole is provided on the bottom case 1612 for a pin 164 to pass through, and the pin 164 passes through the through-hole and is electrically connected to the heating element 162.

[0146] Referring to Figure 1 to Figure 3, in some embodiments of the present application, the position of the fluid reservoir chamber 11 is higher than that of the preheating chamber 12, the aerosol-generating material in the fluid reservoir chamber 11 may flow to the preheating chamber 12 through gravity to ensure that the aerosol-generating material can flow smoothly from the fluid reservoir chamber 11 to the preheating chamber 12 before the user's puffing action, further, a communication port between the fluid reservoir chamber 11 and the first fluid passage 151 is located at the bottom of the fluid reservoir chamber 11 in the direction of gravity, thereby ensuring that all aerosol-generating material in the fluid reservoir chamber 11 can flow smoothly to the preheating chamber 12 and improving the utilization rate of the aerosol-generating material in the fluid reservoir chamber 11. It should be noted that the communication port between the fluid reservoir chamber 11 and the second fluid passage 152 may be located at the bottom, side wall, or top of the fluid reservoir chamber 11 , and can be selected according to actual needs.

[0147] In an alternative embodiment, the preheating chamber 12 and the fluid reservoir chamber 11 may be designed as a structure with sleeved inner and outer parts, such as the fluid reservoir chamber 11 surrounding at least part of the outer periphery of the preheating chamber 12, or the preheating chamber 12 surrounding at least part of the outer periphery of the fluid reservoir chamber 11 , etc. The present application does not impose specific restrictions on this. However, it should be noted that regardless of the configuration, to allow the gas in the preheating chamber 12 to be smoothly discharged into the fluid reservoir chamber 11, the opening of the second fluid passage 152 needs to be located at the upper portion of the preheating chamber 12.

[0148] Embodiment Two

[0149] The second aspect of an embodiment of the present application discloses a device for an aerosol provision system 2, where the device comprises the fluid control structure 1 as mentioned above, and the device is a cartridge or an aerosol provision device. That is, the fluid control structure 1 mentioned above may be formed in the cartridge, or located in the aerosol provision device (usually provided with electrical components such as battery components and controllers) used in conjunction with the cartridge.

[0150] Figures 1 - 3 show an example of the fluid control structure 1 formed in a cartridge. It specifically comprises a cartridge housing 161 , and a mouthpiece 163 formed at the top of the cartridge housing 161. The interior of the cartridge housing 161 defines and forms the fluid reservoir chamber 11 and a third fluid passage153. The interior of the cartridge housing 161 further forms an accommodating space for accommodating the cartomizer. Wherein the third fluid passage 153 is used to transfer the aerosol atomized by the cartomizer to the mouthpiece 163 for the user to puff.

[0151] Wherein the cartomizer comprises a cartomizer housing, a preheating chamber 12 inside the cartomizer housing, and a heating element 162, for specific information about the cartomizer housing, please refer to the relevant description in Embodiment One.

[0152] Specifically, the cartomizer base 1614 of the cartomizer housing may be provided with an insertion portion 16141 that is in plug-in fit with the cartridge housing 161, by providing the insertion portion 16141 , the mechanical stability and sealing of the connection between the cartomizer base 1614 and the cartridge housing 161 may be further improved; specifically, the insertion portion 16141 may be sealingly connected to the cartridge housing 161 through a fourth seal 1615. As shown in the figures, the fluid reservoir chamber 11 is provided near the mouthpiece 163 relative to the preheating chamber 12, so that when a user uses it, an arrangement with the fluid reservoir chamber 11 being on top and the preheating chamber 12 on the bottom is formed, which facilitates the opening of the first one-way valve and replenishment by gravity.

[0153] In an alternative embodiment, the fluid reservoir chamber 11 and the preheating chamber 12 may be arranged in other positional relationships, as long as the replenishment of liquid from the fluid reservoir chamber 11 to the preheating chamber 12 and the discharge of gas from the preheating chamber 12 to the fluid reservoir chamber 11 can be achieved, and the present application does not impose specific limitations on this.

[0154] Embodiment Three

[0155] With continued reference to Figure 2 and Figure 7, the third aspect of the present application discloses an aerosol provision system 2, which comprises the fluid control structure 1 as described in Embodiment One, and a heating element 162 configured to generate heat when being energized to heat an aerosol-generating material in the preheating chamber 12.

[0156] Further, the aerosol provision system 2 further comprises a controller 4 configured to control the heating element 162 to operate at a first power supply power when the system is in a preheating mode, to heat the aerosol-generating material in the preheating chamber 12 to a first temperature; at the first temperature, the liquid aerosol-generating material cannot be atomized; the device for an aerosol provision system 2 further comprises a battery component 3, and the battery component 3 is electrically connected to the heating element 162 via a pin 164, specifically, the battery component 3 may be separated from the heating element 162, and when the battery component 3 is connected to the fluid control structure 1 , the electrical connection between the battery component 3 and the heating element 162 is achieved through contacting or inserting the pin 164.

[0157] It can be understood that the controller 4 may have a plurality of possible configurations. Wherein the controller 4 may be programmable.

[0158] The battery component 3 may be any suitable power source, such as a DC voltage source. In one embodiment, the power source is a lithium-ion battery. Or, the power source may be a nickel metal hydride battery, nickel cadmium battery, or lithium-based battery, such as a lithium cobalt battery, lithium iron phosphate battery, or lithium polymer battery.

[0159] The aerosol provision system 2 configures the heating element 162 to operate at an operating mode with two power supply powers, which not only saves power for the device but also ensures its normal operation, providing users with a better usage experience.

[0160] In an embodiment of the present application, the controller 4 is further configured to determine that the system is a preheating mode according to a preheating start instruction input by a user; and / or; the controller 4 is further configured to determine that the system is in a preheating mode when the time after the user finished the last puffing has reached a first predetermined time, wherein, the preheating mode refers to heating the preheating chamber 12 to the first temperature; that is to say, the preheating mode can be turned on by the user actively entering a preheating start instruction, or determined to be turned on by analyzing the user's usage actions through the system.

[0161] In an embodiment of the present application, the controller 4 is further configured to determine that the system exits the preheating mode according to a preheating end instruction input by the user; and / or; the controller 4 is further configured to determine that the system exits the preheating mode when the duration that the user is not puffing has reached a second predetermined time. Wherein, the second predetermined time is longer than the first predetermined time, which means that when the user briefly stops puffing, it can continue to maintain the preheating work of the preheating chamber 12, however, once the time reaches the second predetermined time, it can be judged that the user is not ready to take another puff in a short period of time, and thus the system exits the preheating mode.

[0162] In the present embodiment, the controller 4 is further configured to control the heating element 162 to operate at a second power supply power when the system is in the puffing mode, to heat the aerosol-generating material in preheating chamber 12 to a second temperature; the second temperature is higher than the first temperature, and at the second temperature, the liquid aerosol-generating material can be atomized; it should be noted that at the first temperature, the aerosol-generating material will neither be fully atomized in part nor partially atomized (trace level is atomized), and by providing the first power supply power, the power consumption of the preheating chamber 12 can be further reduced, which can ensure that the initial temperature of the aerosol is raised when the user takes a puff to improve the taste, and can also prolong the overall system usage time.

[0163] In an embodiment of the present application, the controller 4 is further configured to determine that the system is in the puffing mode according to a user’s puffing action; specifically, the puffing mode of the system may be changed according to the duration of the user's single puffing action, the interval between puffing actions, and the amplitude of the puffing action (the puffing amount within the same time). For example, if a user takes a puff for up to 8 seconds (usually 3 - 5 seconds for a single normal puff), it can be determined that the user wishes to enter the preheating mode.

[0164] In an embodiment of the present application, the first adjusting component 131 is an electric valve; the system further comprises a sensor configured to detect the amount of aerosol-generating material inside the preheating chamber 12; the controller 4 is configured to control the electric valve to move to an open position to open the first fluid passage151 when the amount of aerosol-generating material is below a first predetermined value, and to control the electric valve to move to a closed position to close the first fluid passage151 when the amount of aerosol-generating material in the preheating chamber 12 is above a second predetermined value; wherein, the sensor may be a weight sensor, which determines the specific amount of aerosol-generating material in the preheating chamber 12 by detecting the weight of the aerosol-generating material in the preheating chamber 12. It may also be a flow sensor or the like. The present application does not impose specific restrictions on this.

[0165] Embodiment Four

[0166] The fourth aspect of an embodiment of the present application discloses a heating control method applied in the aerosol provision system 2 mentioned above, which comprises: when the system is in the preheating mode, the controller 4 controls the heating element 162 to operate at a first power supply power, to heat the aerosol-generating material in the preheating chamber to a first temperature; at the first temperature, the aerosol-generating material cannot be atomized.

[0167] In an embodiment of the present application, the method further comprises: the controller 4 determines that the system is in the preheating mode according to the preheating start instruction input by a user; and / or; the controller 4 determines that the system is in the preheating mode when the time after the user finished the last puffing has reached a first predetermined time.

[0168] In an embodiment of the present application, the method further comprises: the controller 4 determines that the system exits the preheating mode according to a preheating end instruction input by the user; and / or; the controller 4 determines that the system exits the preheating mode when the duration that the user is not puffing has reached a second predetermined time.

[0169] In an embodiment of the present application, the method further comprises: the controller 4 controls the heating element 162 to operate at a second power supply power when the system is in the puffing mode, to heat the aerosol-generating material in the preheating chamber 12 to a second temperature; the second temperature is higher than the first temperature, and at the second temperature, the aerosol-generating material can be atomized.

[0170] In an embodiment of the present application, the method further comprises: the controller 4 determines that the system is in the puffing mode according to a user’s puffing action; specifically, the puffing mode of the system may be changed according to the duration of the user's single puffing action, the interval between puffing actions, and the amplitude of the puffing action (the puffing amount within the same time).

[0171] A flowchart of a specific method is shown in Figure 6, which comprises:

[0172] According to a preheating start instruction input by a user, controlling the heating element 162 to turn on the preheating mode (such as the heating element 162 working at the first power), and when it is detected that the user performs a puffing action later, the sensor triggers the puffing mode, and the heating element 162 is switched from the preheating mode to the puffing mode (such as the heating element 162 working at the second power), thereby atomizing and producing an aerosol. When the user stops the puffing action for a certain time, the heating element 162 returns to the preheating mode.

[0173] When in the preheating mode, if the user does not perform the puffing action for a certain time or inputs a preheating end instruction, the preheating will be ended.

[0174] In an embodiment of the present application, the first adjusting component 131 is an electric valve; the system further comprises a sensor configured to detect the amount of aerosol-generating material inside the preheating chamber 12; the method further comprises: the controller 4 controls the electric valve to move to an open position to open the first fluid passage151 when the amount of aerosol-generating material is below a first predetermined value, and controls the electric valve to move to a closed position to close the first fluid passage151 when the amount of aerosol-generating material in the preheating chamber 12 is above a second predetermined value.

[0175] It should be noted that the relevant content in Embodiments One to Four may be referenced to each other, and the same or similar parts will not be repeated here.

[0176] It can be understood that the above text and illustrations are only an introduction to some embodiments of the present application, without departing from the inventive concept of the present application, users may make other modifications according to the actual needs of the product.

[0177] In the description of this specification, the referential terminology "an embodiment," "some embodiments," "example," "specific example," or "some examples" means that specific features, structures, materials, or characteristics described in connection with the embodiment or example are comprised in at least one embodiment or example of the present application. In this specification, the indicative expression of the above-mentioned terms does not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable way in any one or more embodiments or examples.

[0178] Moreover, the terms "first," "second," etc., are used merely for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the characteristics defined as "first," "second," etc., may explicitly or implicitly comprise at least one such characteristic. In the description of the present application, the term "multiple" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0179] In the present application, unless explicitly defined and limited, terms such as "mounting," "connecting," "connection," "fixing," etc., should be understood broadly. For instance, the connection can be a fixed connection or a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary medium, it can be the internal communication of two components or the interaction between two components, unless explicitly defined otherwise. Those skilled in the art can understand the specific meanings of these terms in the context of the application based on the circumstances. Although the embodiments of the application have been shown and described above, it should be understood that the above-described embodiments are exemplary and should not be considered as limiting the application. Those skilled in the art within the scope of the application can make variations, modifications, replacements, and variations to the above-described embodiments.

Claims

Claims1. A fluid control structure for an aerosol provision system, characterized in that, the fluid control structure comprises: a fluid reservoir chamber, configured to contain a liquid aerosol-generating material; a preheating chamber; a first fluid passage arranged between the fluid reservoir chamber and the preheating chamber, the fluid reservoir chamber replenishing the preheating chamber with liquid through the first fluid passage; a first adjusting component, configured to be movable between an open position for opening the first fluid passage and a closed position for closing the first fluid passage.

2. The fluid control structure according to claim 1 , characterized in that, the first adjusting component is a first valve.

3. The fluid control structure according to claim 2, characterized in that, the first valve is a first one-way valve, configured to, when in the open position, allow the aerosol-generating material to flow along a direction from the fluid reservoir chamber to the preheating chamber and prevent the aerosol-generating material from flowing along a direction from the preheating chamber to the fluid reservoir chamber.

4. The fluid control structure according to claim 3, characterized in that, the fluid control structure further comprises: a second fluid passage arranged between the fluid reservoir chamber and the preheating chamber; along a direction from the fluid reservoir chamber to the preheating chamber, the fluid flux of the second fluid passage is lower than a predetermined flux value.

5. The fluid control structure according to claim 4, characterized in that, the fluid control structure further comprises: a second one-way valve, configured to allow a fluid, in the second fluid passage, to flow along a direction from the preheating chamber to the fluid reservoir chamber and to prevent flow along a direction from the fluid reservoir chamber to the preheating chamber.

6. The fluid control structure according to claim 5, characterized in that, the first one-way valve and / or the second one-way valve have deformable openings.

7. The fluid control structure according to claim 6, characterized in that, the deformable openings are of a duckbill type.

8. The fluid control structure according to claim 1 , characterized in that, the preheating chamber is smaller than the fluid reservoir chamber.

9. The fluid control structure according to any one of claims 1 to 8, characterized in that, the fluid control structure further comprises:a heating element, configured to operate at a first power supply power to heat the aerosol-generating material in the preheating chamber to a first temperature; at the first temperature, the aerosol-generating material is not able to be atomized.

10. The fluid control structure according to claim 9, characterized in that, the heating element is further configured to operate at a second power supply power to heat the aerosol-generating material in the preheating chamber to a second temperature; the second temperature is higher than the first temperature, and at the second temperature, the aerosol-generating material is able to be atomized.

11. The fluid control structure according to claim 10, characterized in that, the fluid control structure further comprises a cartomizer, and the cartomizer comprises: a cartomizer housing defining and forming the preheating chamber; and the heating element.

12. The fluid control structure according to claim 11 , characterized in that, the cartomizer housing comprises: a first seal arranged between the fluid reservoir chamber and the preheating chamber, the first fluid passage being provided on the first seal.

13. The fluid control structure according to claim 1 , characterized in that, the maximum capacity of the fluid reservoir chamber is configured to be able to replenish the preheating chamber at least twice.

14. A device for an aerosol provision system, characterized in that, the device comprises the fluid control structure according to any one of claims 1 to 13, and the device is a cartridge or an aerosol provision device.

15. An aerosol provision system, characterized in that, the system comprises: the fluid control structure according to any one of claims 1 to 13; a heating element, configured to generate heat when powered on, to heat the aerosol-generating material in the preheating chamber; a controller, configured to, when the system is in a preheating mode, control the heating element to operate at a first power supply power, to heat the aerosol-generating material in the preheating chamber to a first temperature; at the first temperature, the aerosol-generating material is not able to be atomized.

16. The aerosol provision system according to claim 15, characterized in that, the controller is further configured to determine that the system is in the preheating mode according to a preheating start instruction input by a user; and / or; the controller is further configured to determine that the system is in the preheating mode when the time after the user finished the last puffing has reached a first predetermined time.

17. The aerosol provision system according to claim 15, characterized in that, the controller is further configured to determine that the system exits the preheating mode according to a preheating end instruction input by a user; and / or; the controller is further configured to determine that the system exits the preheating mode when the duration that the user is not puffing has reached a second predetermined time.

18. The aerosol provision system according to claim 15, characterized in that, the controller is further configured to, when the system is in a puffing mode, control the heating element to operate at a second power supply power, to heat the aerosol-generating material in the preheating chamber to a second temperature; the second temperature is higher than the first temperature, and at the second temperature, the aerosol-generating material is able to be atomized.

19. The aerosol provision system according to claim 18, characterized in that, the controller is further configured to determine that the system is in the puffing mode according to the puffing action of a user.

20. A heating control method for an aerosol provision system, applied in the aerosol provision system according to any one of claims 15 to 19, characterized in that, the method comprises: when the system is in the preheating mode, by the controller controlling the heating element to operate at the first power supply power, to heat the aerosol-generating material in the preheating chamber to the first temperature; at the first temperature, the aerosol-generating material is not able to be atomized.

21. The heating control method for an aerosol provision system according to claim 20, characterized in that, the method further comprises: according to a preheating start instruction input by a user, by the controller, determining that the system is in the preheating mode; and / or; when the time after the user finished the last puffing has reached a first predetermined time, through the controller, determining that the system is in the preheating mode.

22. The heating control method for an aerosol provision system according to claim 20, characterized in that, the method further comprises: according to a preheating end instruction input by a user, by the controller, determining that the system exits the preheating mode; and / or; when the duration that the user is not puffing has reached a second predetermined time, by the controller, determining that the system exits the preheating mode.

23. The heating control method for an aerosol provision system according to claim 20,characterized in that, the method further comprises: when the system is in a puffing mode, by the controller, controlling the heating element to operate at a second power supply power, to heat the aerosol-generating material in the preheating chamber to a second temperature; the second temperature is higher than the first temperature, and at the second temperature, the aerosol-generating material is able to be atomized.

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