Atomization assembly and aerosol generating device

Abstract

Disclosed in the present application are an atomization assembly (100) and an aerosol generating device. The aerosol generating device comprises a power supply structure (200) and an atomization assembly (100), wherein the power supply structure (200) supplies power to the atomization assembly (100). The atomization assembly (100) comprises a housing (110), wherein a liquid storage cavity (170) is formed in the housing (110), the liquid storage cavity (170) being used for accommodating an atomization medium (150); and an absorption structure (120) is provided in the liquid storage cavity (170), the absorption structure (120) being spaced apart from the atomization medium (150), and the absorption structure (120) being used for absorbing oxygen or nitrogen from air in the liquid storage cavity (170). According to the present application, even if a significant pressure fluctuation occurs in the liquid storage cavity (170), the components of air in the liquid storage cavity (170) can still be absorbed by means of the absorption structure (120), reducing the pressure in the liquid storage cavity (170), and thereby reducing oil leakage.

Description

Atomizing assembly and aerosol generating device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 17, 2023, with application number 202311043824.2 and invention name “A Nebulizer Assembly and Aerosol Generating Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of aerosol generation, and in particular to an atomization assembly and an aerosol generating device. Background Art

[0003] The statements here only provide background information related to the present application and do not necessarily constitute prior art. The atomizer assembly generally has a liquid storage chamber. Under the premise of ensuring structural sealing, the liquid storage chamber generally has two air inlet channels, namely the porous atomizer core and the ventilation channel. After the liquid storage chamber is filled with oil, the atomizer core generally absorbs the atomized medium to generate a certain negative pressure in the liquid storage chamber to lock the atomized medium, or the ventilation channel is used to store the atomized medium leaked from the liquid storage chamber into the ventilation channel. However, when the air pressure in the liquid storage chamber fluctuates greatly due to temperature, a large positive pressure difference will be generated between the liquid storage chamber and the ventilation channel. The positive pressure difference will squeeze out the atomized medium stored in the ventilation channel, eventually causing oil leakage. Technical issues

[0004] One of the purposes of the embodiments of the present application is to provide an atomization assembly and an aerosol generating device to solve the technical problem in the prior art that when a large air pressure fluctuation occurs in the liquid storage chamber due to temperature influence, the atomized medium stored in the ventilation channel will be squeezed out and oil leakage will occur. Technical Solutions

[0005] The technical solution adopted in the embodiment of this application is:

[0006] In a first aspect, an atomization assembly is provided, comprising a shell; a liquid storage chamber is formed in the shell; the liquid storage chamber is used to accommodate an atomizing medium; an absorption structure is provided in the liquid storage chamber; the absorption structure is arranged to be spaced apart from the atomizing medium; the absorption structure is used to absorb oxygen or nitrogen in the air in the liquid storage chamber.

[0007] In one embodiment, the absorption rate of the absorbent structure increases with increasing temperature.

[0008] In one embodiment, the absorbent structure is an oxygen scavenger.

[0009] In one embodiment, the deoxidizer includes one or more of reduced iron powder, activated carbon, diatomaceous earth, calcium oxide, magnesium oxide, aluminum oxide, potassium oxide, calcium chloride, sodium sulfate, potassium chloride, ferrous sulfate, sodium sulfide, and copper sulfate.

[0010] In one embodiment, the absorption structure is an active material that can react with nitrogen to form a solid substance.

[0011] In one embodiment, the absorbent structure is disposed on the top of the liquid storage chamber.

[0012] In one embodiment, the space between the absorption structure and the atomized medium is defined as a gas space; and along the axial direction of the shell, a projection of the absorption structure coincides with a projection of the gas space.

[0013] In one embodiment, an atomization chamber connected to the external atmosphere is further formed in the shell; a porous atomization core is provided in the atomization chamber; the liquid storage chamber is connected to the atomization chamber through the atomization core; the atomization assembly also includes a ventilation channel connected to the liquid storage chamber; the ventilation threshold of the ventilation channel is lower than the ventilation threshold of the atomization core.

[0014] In one embodiment, the liquid storage chamber is arranged around the atomization chamber, and the absorption structure is arranged around the atomization chamber; the space between the absorption structure and the atomization medium is set as a gas space, and the gas space is arranged around the atomization chamber.

[0015] In one embodiment, a partition is further provided in the liquid storage chamber; the partition is used to separate the absorption structure from the atomized medium; the partition can allow gas to pass through; and the partition can block liquid from passing through.

[0016] In one embodiment, the isolation element is a breathable and oleophobic structure.

[0017] In one embodiment, the air-permeable and oleophobic structure is formed by stacking multiple layers of thin film materials, and the pore size of the thin film material is set to allow air flow to pass but not allow oil to pass through.

[0018] In one embodiment, the spacer is supported beneath the absorbent structure.

[0019] In one embodiment, the inner wall of the liquid storage cavity forms a limiting member, and the isolation member is limited by the limiting member.

[0020] In a second aspect, an aerosol generating device is provided, comprising a power supply structure and the above-mentioned atomization component; the power supply structure supplies power to the atomization component. Beneficial effects

[0021] The beneficial effect of the atomizer assembly provided by the embodiment of the present application is that: by arranging an absorption structure in the liquid storage chamber, when the temperature in the liquid storage chamber decreases, according to the ideal gas state equation, PV=nRT, where P refers to the pressure of the ideal gas, V is the volume of the ideal gas, n represents the amount of gas substance, T represents the thermodynamic temperature of the ideal gas, and R is the ideal gas constant. As can be seen from the above formula, temperature and pressure are proportional. When the temperature decreases, the gas pressure in the liquid storage chamber will decrease. The temperature decreases, causing the pressure in the liquid storage chamber to drop to a level exceeding the ventilation threshold of the ventilation channel. External gas enters the liquid storage chamber through the ventilation channel, and the amount of gas in the cavity increases, that is, n increases. However, the absorption structure will absorb oxygen or nitrogen in the air entering the liquid storage chamber, that is, reduce the amount of air n, so that the pressure in the liquid storage chamber is maintained above the ventilation threshold of the ventilation channel. At this time, no ventilation will be carried out, and the pressure value in the liquid storage chamber will not exceed the external air pressure, and no oil leakage will occur. When the temperature within the liquid storage chamber rises, according to the ideal gas state equation, the pressure within the liquid storage chamber increases. This may cause the atomized medium within the liquid storage chamber to be squeezed into the ventilation channel. However, the absorption structure can continue to absorb oxygen or nitrogen from the air within the liquid storage chamber as the temperature rises, thereby controlling the rise in pressure within the liquid storage chamber and allowing the atomized medium in the ventilation channel to be drawn back into the liquid storage chamber, thereby reducing the occurrence of oil leakage. Overall, even if the liquid storage chamber experiences large pressure fluctuations due to temperature, the atomized medium stored in the ventilation channel will not be squeezed out and cause oil leakage.

[0022] The beneficial effect of the aerosol generating device provided by the embodiment of the present application is that the design of the atomizing component can reduce the oil leakage of the aerosol generating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] FIG1 is a schematic structural diagram of an aerosol generating device provided in an embodiment of the present application;

[0025] FIG2 is a schematic structural diagram of an atomizing assembly provided in an embodiment of the present application;

[0026] FIG3 is a schematic structural diagram of an atomizing assembly provided in an embodiment of the present application when there is no atomizing medium.

[0027] Among them, the reference numerals in the figures are:

[0028] 100. Atomization assembly; 110. Shell; 111. Gas space; 112. Atomization chamber; 120. Absorption structure; 130. Isolation piece; 140. Atomization core; 150. Atomization medium; 160. Mouthpiece; 170. Liquid storage chamber; 200. Power supply structure. Modes for Carrying Out the Invention

[0029] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit this application.

[0030] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first" and "second" are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0031] In order to illustrate the technical solution provided by this application, a detailed description is given below with reference to specific drawings and embodiments.

[0032] On the premise of ensuring structural sealing, the liquid storage chamber 170 generally has two air inlet channels, namely the porous atomizing core and the ventilation channel. After the liquid storage chamber 170 is filled with oil, the atomizing medium is generally locked by the atomizing core absorbing the atomized medium to generate a certain negative pressure in the liquid storage chamber 170, or the atomized medium leaked from the liquid storage chamber 170 into the ventilation channel is stored through the ventilation channel. However, when the air pressure in the liquid storage chamber 170 fluctuates greatly due to temperature, a large positive pressure difference will be generated between the liquid storage chamber 170 and the ventilation channel. The positive pressure difference will squeeze out the atomized medium stored in the ventilation channel, eventually causing oil leakage.

[0033] In order to solve the above problems, the inventors of the present application, after a long period of in-depth research, finally provide an atomization assembly 100 and an aerosol generating device, in which an absorption structure 120 is set in the shell 110. The absorption structure 120 absorbs oxygen or nitrogen from the air in the liquid storage chamber 170, thereby reducing the air pressure in the liquid storage chamber 170 and alleviating oil leakage.

[0034] Referring to FIG. 1 , an embodiment of the present application provides an aerosol-generating device comprising a power supply structure 200 and an atomizing assembly 100. The power supply structure 200 is mechanically and electrically connected to the atomizing assembly 100. The power supply structure 200 is used to supply power to the atomizing assembly 100. The atomizing assembly 100 is used to atomize an atomizing medium 150 into aerosol particles.

[0035] Referring to Figures 2 and 3, the atomization assembly 100 includes a shell 110; a liquid storage chamber 170 is formed in the shell 110; the liquid storage chamber 170 is used to accommodate the atomizing medium 150; an absorption structure 120 is provided in the liquid storage chamber 170; the absorption structure 120 is arranged to be spaced apart from the atomizing medium 150; the absorption structure 120 is used to absorb oxygen or nitrogen in the air in the liquid storage chamber 170.

[0036] The atomizing medium 150 is flowable smoke liquid.

[0037] The absorption structure 120 is spaced apart from the atomized medium 150 . When the atomized medium 150 is injected into the liquid storage chamber 170 , a space exists between the absorption structure 120 and the atomized medium 150 . The space is assumed to be the gas space 111 in FIG. 2 .

[0038] When the atomized medium 150 is injected into the liquid storage chamber 170 , the atomized medium 150 in the liquid storage chamber 170 will be mixed with air, and the above-mentioned gas space 111 will also be filled with air; the absorption structure 120 will absorb the oxygen or nitrogen in the air in the above-mentioned atomized medium 150 and the air in the gas space 111.

[0039] Air is composed of nitrogen, oxygen, rare gases (helium, neon, argon, krypton, xenon, and radon), carbon dioxide, and other substances (such as water vapor and impurities). The volume fraction of nitrogen is approximately 78%, the volume fraction of oxygen is approximately 21%, the volume fraction of rare gases (helium, neon, argon, krypton, xenon, and radon) is 0.934%, the volume fraction of carbon dioxide is 0.04%, and the volume fraction of other substances (such as water vapor and impurities) is approximately 0.002%. The oxygen or nitrogen in the air within the liquid storage chamber 170 is absorbed by the absorption structure 120. According to the law of partial pressure, the partial pressure of a gas in a gas mixture is equal to the pressure it would produce if it occupied the entire container alone. The total pressure of a gas mixture is equal to the sum of the partial pressures of the individual gases. Therefore, when oxygen or nitrogen in the air is absorbed, the air pressure decreases, thereby reducing the risk of oil leaks.

[0040] When the air pressure in the liquid storage chamber 170 fluctuates greatly due to the influence of temperature. Specifically, when the temperature in the liquid storage chamber 170 decreases, according to the ideal gas state equation, PV=nRT, where P refers to the pressure of the ideal gas, V is the volume of the ideal gas, n represents the amount of gas substance, T represents the thermodynamic temperature of the ideal gas, and R is the ideal gas constant. It can be seen from the above formula that temperature and pressure are proportional. When the temperature drops by 1°C, the gas pressure in the liquid storage chamber 170 will drop by 338Pa. The temperature drops, causing the pressure in the liquid storage chamber 170 to drop to a level exceeding the ventilation threshold of the ventilation channel. External gas enters the liquid storage chamber 170 through the ventilation channel, and the amount of gas in the cavity increases, that is, n increases. However, the absorption structure 120 will absorb the oxygen or nitrogen in the air entering the liquid storage chamber 170, that is, reduce the amount of air n, so that the pressure in the liquid storage chamber 170 is maintained above the ventilation threshold of the ventilation channel. At this time, no ventilation will be carried out, and the pressure value in the liquid storage chamber 170 will not exceed the external air pressure, and no oil leakage will occur. When the temperature in the liquid storage chamber 170 rises, according to the ideal gas state equation, it can be seen that as the temperature rises, the pressure in the liquid storage chamber 170 rises. At this time, the atomized medium 150 in the liquid storage chamber 170 may be squeezed into the ventilation channel. However, as the temperature rises, the absorption structure 120 can still continue to absorb the oxygen or nitrogen in the air in the liquid storage chamber 170, thereby controlling the rise in pressure in the liquid storage chamber 170, so that the atomized medium 150 in the ventilation channel can be sucked back into the liquid storage chamber 170, thereby reducing the occurrence of oil leakage. In addition, the atomizing assembly 100 is applicable to a wide range of viscosities of the atomized medium 150, from low viscosity to high viscosity.

[0041] It should be noted that the ventilation threshold refers to when the difference between the external air pressure and the air pressure in the liquid storage chamber 170 reaches the ventilation threshold, the channel corresponding to the ventilation threshold will be ventilated.

[0042] In actual use, the atomizer assembly 100 is prone to oil leakage in the following three situations: 1. When left unused day or night; 2. When pumping large volumes of liquid; and 3. When subjected to thermal shock during transportation. The following analysis compares these three situations before and after using the absorption structure.

[0043] 1. Using the absorption structure 120 to solve the problem of liquid leakage when the liquid is not stored: Due to the temperature difference between day and night, when the temperature drops at night, the pressure in the liquid storage chamber 170 drops to a level that exceeds the ventilation threshold of the ventilation channel. External air enters the liquid storage chamber 170 through the ventilation channel, and the amount of gas in the cavity increases, that is, n increases, and at the same time, the pressure in the liquid storage chamber 170 rises; during the day, due to the increase in the amount and temperature of the gas in the cavity, the pressure in the liquid storage chamber 170 further increases and may even exceed the external air pressure, causing leakage. The use of the absorption structure 120 in the embodiment of the present application means that when the temperature drops at night, the pressure in the liquid storage chamber 170 drops to the ventilation threshold, causing gas to enter from the ventilation channel. The absorption structure 120 will absorb the air components entering the liquid storage chamber 170, that is, reduce the amount of gas n, so that the pressure in the liquid storage chamber 170 is maintained above the ventilation threshold, and the pressure value in the liquid storage chamber 170 will not exceed the external air pressure, and oil leakage will not occur; during the day, the temperature rises, and the absorption structure 120 controls the amount of gas entering the liquid storage chamber 170 at night. At the same time, the absorption structure 120 continues to work when the temperature rises, thereby controlling the pressure rise in the liquid storage chamber 170 and avoiding the occurrence of liquid leakage when left idle.

[0044] 2. Using the absorption structure 120 to solve the problem of leakage during large-volume puffing: With prolonged puffing, the temperature in the liquid storage chamber 170 rises due to heat conduction. In addition, in the later stage of puffing, the amount of gas in the liquid storage chamber 170 increases due to the early ventilation, causing the pressure in the liquid storage chamber 170 to rise and even exceed the external air pressure, resulting in leakage during puffing. The use of the absorption structure 120 can absorb the components of the air entering the liquid storage chamber 170 during the early ventilation, reduce the amount of gas in the liquid storage chamber 170, and increase the initial negative pressure in the later stage of puffing. Even if puffing causes the temperature of the liquid storage chamber 170 to rise, the increase in the initial negative pressure and the continuous operation of the absorption structure 120 can prevent the liquid in the liquid storage chamber 170 from leaking during puffing.

[0045] 3. Use the absorption structure 120 to solve the problem of leakage during transportation temperature shock: This principle is the same as the leakage when the product is left idle day or night. When the absorption structure 120 is used, when the temperature drops, the pressure in the liquid storage chamber 170 drops to the ventilation threshold, causing gas to enter from the ventilation channel, but the absorption structure 120 will absorb the combined components of the air entering the liquid storage chamber 170, that is, reduce the amount of gas n, so that the pressure in the liquid storage chamber 170 is maintained above the ventilation threshold; when the temperature rises, the absorption structure 120 controls the amount of gas entering the liquid storage chamber 170 at low temperatures. At the same time, when the temperature rises, the absorption structure 120 continues to work, thereby controlling the pressure rise in the liquid storage chamber 170 and avoiding the occurrence of leakage.

[0046] In one embodiment, the absorption rate of the absorption structure 120 increases with increasing temperature. When the temperature in the liquid storage chamber 170 rises, the absorption structure 120 can quickly absorb oxygen or nitrogen in the air in the liquid storage chamber 170, and can quickly reduce the air pressure in the liquid storage chamber 170, thereby reducing leakage.

[0047] In one embodiment, factors affecting the absorption of components from the air by the absorbent structure 120 include temperature, humidity, the surface area of ​​the absorbent structure 120, the concentration of the components in the air, and the type of absorbent structure 120. Generally, the higher the temperature, the greater the concentration of the components in the air, and the larger the surface area of ​​the absorbent structure 120 in contact with the air, the faster the absorbent structure 120 absorbs the components; while the higher the humidity, the slower the absorption of the components by the absorbent structure 120.

[0048] In one embodiment, the absorption structure 120 is used to absorb oxygen from the air within the liquid storage chamber 170. Since the volume fraction of oxygen in air is approximately 21%, when the absorption structure 120 completely absorbs the oxygen in the air within the cavity, the pressure within the liquid storage chamber 170 will decrease by 21%, thereby effectively reducing oil leakage from the liquid storage chamber 170.

[0049] In one embodiment, the absorption structure 120 is a deoxidizer. The deoxidizer is provided in the liquid storage chamber 170 to absorb oxygen entering the liquid storage chamber 170, so that the liquid storage chamber 170 is in an oxygen-free state. In this way, not only can the negative pressure difference between the air pressure in the liquid storage chamber 170 and the external ambient air pressure be maintained at a high level, the liquid in the atomizer core 140 can be better locked, and leakage in the ventilation channel can be reduced; in addition, the smoke oil or high-viscosity cannabis oil is susceptible to deterioration due to temperature, light, moisture, and oxygen. In particular, the active ingredients in the high-viscosity cannabis oil are gradually oxidized and decomposed under aerobic conditions, reducing their effectiveness and destroying their flavor and taste. Therefore, the deoxidation of the deoxidizer has an anti-mildew effect, which can prevent the smoke oil or high-viscosity cannabis oil from deteriorating during long-term storage. It can be understood that in other embodiments of the present application, the absorption structure 120 can also be other structures that can absorb oxygen, such as a membrane or absorption liquid that can absorb oxygen.

[0050] In one embodiment, the deoxidizer includes one or more of reduced iron powder, activated carbon, diatomaceous earth, calcium oxide, magnesium oxide, aluminum oxide, potassium oxide, calcium chloride, sodium sulfate, potassium chloride, ferrous sulfate, sodium sulfide, and copper sulfate. Reduced iron powder, activated carbon, diatomaceous earth, calcium oxide, magnesium oxide, aluminum oxide, potassium oxide, calcium chloride, sodium sulfate, potassium chloride, ferrous sulfate, sodium sulfide, and copper sulfate all have the function of absorbing oxygen. The deoxidizer can be made from any one of reduced iron powder, activated carbon, diatomaceous earth, calcium oxide, magnesium oxide, aluminum oxide, potassium oxide, calcium chloride, sodium sulfate, potassium chloride, ferrous sulfate, sodium sulfide, and copper sulfate. The deoxidizer can also be made from two or more of reduced iron powder, activated carbon, diatomaceous earth, calcium oxide, magnesium oxide, aluminum oxide, potassium oxide, calcium chloride, sodium sulfate, potassium chloride, ferrous sulfate, sodium sulfide, and copper sulfate, and made according to each specific ratio, which is not limited here.

[0051] In one embodiment, factors influencing the oxygen absorption rate of the deoxidizer include temperature, humidity, oxygen concentration, deoxidizer type, the surface area of ​​the deoxidizer in contact with air, the concentration of the chemical reactants, and the properties of the reactants. Higher temperatures, higher oxygen concentrations, larger surface areas in contact with air, and higher concentrations of active ingredients in the deoxidizer result in faster reaction rates; higher humidity results in slower reaction rates. Furthermore, different types of deoxidizers may have different reaction rates due to the different active ingredients they contain.

[0052] In one embodiment, referring to FIG. 2 , the absorption structure 120 is positioned at the top of the liquid storage chamber 170. During assembly, the absorption structure 120 can be first installed at the top of the liquid storage chamber 170, and then the atomized medium 150 can be injected into the liquid storage chamber 170, ensuring that a certain volume of gas space 111 exists between the atomized medium 150 and the absorption structure 120. Alternatively, the atomized medium 150 can be first injected into the liquid storage chamber 170, and then the absorption structure 120 can be installed above the atomized medium 150. In this embodiment, since the atomized medium 150 is tobacco liquid, tobacco liquid tends to flow downward under the action of gravity. When the absorption structure 120 is positioned at the top of the liquid storage chamber 170, it can accommodate a sufficient amount of tobacco liquid while maintaining a certain total volume of the liquid storage chamber 170, fully utilizing the space within the liquid storage chamber 170 and facilitating a compact design. It is understood that in other embodiments of the present application, the absorption structure 120 can also be positioned on the sidewalls of the liquid storage chamber 170, and this is not intended to be a limitation here.

[0053] In one embodiment, referring to FIG2 , the absorption structure 120 and the gas space 111 are disposed vertically opposite each other; in the axial direction of the housing 110, the projection of the absorption structure 120 coincides with the projection of the gas space 111. That is, along the axial direction of the housing 110, the absorption structure 120 and the gas space 111 are disposed correspondingly at any position. This allows the absorption structure 120 to fully contact the air in the gas space 111, achieving a higher oxygen absorption rate. It is understood that in other embodiments of the present application, in the axial direction of the housing 110, the projection of the absorption structure 120 and the projection of the gas space 111 may also coincide, for example, the projected area of ​​the absorption structure 120 may be larger or smaller than the projected area of ​​the gas space 111.

[0054] In one embodiment, referring to FIG. 2 , an atomizing chamber 112 communicating with the external atmosphere is further formed in the housing 110. A porous atomizing core 140 is disposed in the atomizing chamber 112. A liquid storage chamber 170 communicates with the atomizing chamber 112 via the atomizing core 140. The atomizing assembly 100 further includes a ventilation channel communicating with the liquid storage chamber 170. The ventilation threshold of the ventilation channel is lower than the ventilation threshold of the atomizing core 140.

[0055] It should be noted here that the ventilation threshold means that when the difference between the external air pressure and the air pressure in the liquid storage chamber 170 reaches the ventilation threshold, the channel corresponding to the ventilation threshold will be ventilated. For example, when the ventilation threshold of the ventilation channel is set to 600Pa, and the ventilation threshold of the atomizer core 140 is set to 1000Pa. Then, when the difference between the external air pressure and the air pressure in the liquid storage chamber 170 reaches 600Pa, the liquid storage chamber 170 can be ventilated through the ventilation channel, and the external atmosphere can enter the liquid storage chamber 170 through the ventilation channel to promote the fluidity of the e-liquid in the liquid storage chamber 170. However, at this time, the atomizer core 140 will not be ventilated, that is, the e-liquid in the liquid storage chamber 170 can enter the atomizer core 140, but the gas in the atomizer chamber 112 cannot enter the liquid storage chamber 170 through the atomizer core 140. In the embodiment of the present application, by setting the ventilation threshold of the ventilation channel to be lower than the ventilation threshold of the atomizer core 140, the liquid storage chamber 170 is mainly ventilated through the ventilation channel, thereby reducing the atomizer core 140 from being used for ventilation while atomizing, thereby avoiding the problem of dry burning that affects the taste and shortens the lifespan.

[0056] Furthermore, the ventilation threshold of the ventilation channel needs to be selected based on the liquid supply of the atomizer core 140. When the atomizer core 140 has a strong liquid supply capacity, that is, the liquid supply to the atomizer core 140 is smooth, the ventilation threshold of the ventilation channel can be designed to be higher. When the atomizer core 140 has a weak liquid supply capacity, that is, the liquid supply to the atomizer core 140 is not smooth, the ventilation threshold of the ventilation channel can be designed to be lower. In other words, ventilation channels with different ventilation thresholds need to be designed for different atomizer cores 140.

[0057] The liquid supply capacity of the atomizer core 140 is generally related to the inner diameter, length, and number of the channels in the atomizer core 140. The ventilation threshold of the ventilation channel is related to the length and inner diameter of the ventilation channel.

[0058] Furthermore, the ventilation channel's ventilation threshold must be designed to ensure that the negative pressure in the reservoir 170 after ventilation can maintain the weight of the liquid in the reservoir 170 and prevent leakage. When the reservoir 170 is ventilated, positive pressure may be generated due to the high temperature of the reservoir 170. This could cause the liquid in the reservoir 170 to leak out of the ventilation channel. Therefore, the ventilation channel must be sufficiently long to prevent the liquid from leaking out, ensuring that the liquid can be drawn back into the reservoir 170 when the pressure in the reservoir 170 is restored.

[0059] In one embodiment, one end of the ventilation channel is in communication with the liquid storage chamber 170, and the other end of the ventilation channel is in communication with the atomizing chamber 112. That is, ventilation is achieved by conducting the gas in the atomizing chamber 112 into the liquid storage chamber 170. In other embodiments, one end of the ventilation channel may be in communication with the liquid storage chamber 170, and the other end of the ventilation channel may be in communication with the external atmosphere. Ventilation is achieved by directly introducing the external atmosphere into the liquid storage chamber 170.

[0060] In one embodiment, referring to FIG. 2 , the liquid storage chamber 170 is disposed around the atomizing chamber 112 , the absorption structure 120 is disposed around the atomizing chamber 112 , and the gas space 111 is disposed around the atomizing chamber 112 .

[0061] In one embodiment, the atomizer core 140 is electrically connected to the power supply structure 200. The tobacco oil in the liquid storage chamber 170 flows through the atomizer core 140, and the atomizer core 140 heats the tobacco oil and atomizes it into aerosol particles.

[0062] In one embodiment, referring to FIG. 2 , the housing 110 is connected to a mouthpiece 160 ; the mouthpiece 160 is in communication with the atomizing chamber 112 .

[0063] In one embodiment, the amount of deoxidizer is related to the amount of oxygen absorbed. 2.2g of deoxidizer can absorb 240ml of oxygen, and the gram weight of the deoxidizer is linearly related to the amount of oxygen absorbed, that is, 240ml / 2.2g*0.1g =10.9ml of oxygen. In addition, the amount of deoxidizer used is related to the injection volume of the atomizing medium. For example, if the injection volume is 2ml, 0.02g of deoxidizer is theoretically required. Of course, a certain amount of interference can be appropriately increased for the deoxygenation speed. The present application can achieve a negative pressure that meets the design requirements by adjusting the gram weight of the deoxidizer in the liquid storage chamber 170 to match the space of the liquid storage chamber 170. This design can avoid the complex direct liquid structure design and calculation, and the design is simpler and the cost is lower.

[0064] In one embodiment, as shown in FIG2 , a separator 130 is further disposed within the liquid storage chamber 170 . Separator 130 is used to separate the absorption structure 120 from the atomized medium 150 . Separator 130 allows air to pass through, while blocking the passage of liquid. Air in the gas space 111 can pass through separator 130 and be partially absorbed by the absorption structure 120 . The tobacco liquid in the liquid storage chamber 170 is blocked by separator 130 , preventing the tobacco liquid from increasing the humidity of the absorption structure 120 and thus affecting its absorption capacity.

[0065] In one embodiment, the spacer 130 is a breathable and oleophobic structure. Gas can pass through the breathable and oleophobic structure, but smoke liquid cannot. Specifically, the breathable and oleophobic structure can be composed of multiple layers of thin film material, with the pore size designed to allow only airflow but not smoke liquid to pass through. Furthermore, an oleophobic layer is also designed on the surface of the breathable and oleophobic structure to reduce smoke liquid accumulation on the surface.

[0066] In one embodiment, referring to FIG. 2 , the isolation member 130 is disposed below the absorption structure 120 , and the absorption structure 120 is isolated from the atomized medium 150 by the isolation member 130 .

[0067] In one embodiment, referring to FIG2 , the spacer 130 is supported below the absorbent structure 120, and the absorbent structure 120 can be supported by the spacer 130. It is understood that in other embodiments, the spacer 130 is provided below the absorbent structure 120, but the absorbent structure 120 is not supported on the spacer 130.

[0068] In one embodiment, a limiter is formed on the inner wall of the liquid storage chamber 170, which limits the position of the spacer 130 to facilitate installation of the absorbent structure 120 and the spacer 130. Specifically, the limiter can be supported below the spacer 130 to limit the downward movement of the spacer 130; alternatively, the limiter can be a limit protrusion that engages with a limit groove of the spacer 130 to limit the position of the spacer 130.

[0069] In another embodiment of the present application, the absorption structure 120 is used to absorb oxygen and rare gases in the air within the liquid storage chamber 170. Since the volume fraction of oxygen in air is approximately 21% and the volume fraction of rare gases is 0.934%, when the absorption structure 120 completely absorbs the oxygen and rare gases in the air within the cavity, the pressure within the liquid storage chamber 170 will be reduced by 21.934%, thereby effectively reducing oil leakage from the liquid storage chamber 170.

[0070] In another embodiment of the present application, the absorption structure 120 is used to absorb rare gases in the air within the liquid storage chamber 170. Although the volume of the rare gases is relatively small, it can also reduce the pressure within the liquid storage chamber 170 and reduce oil leakage in the liquid storage chamber 170 to a certain extent.

[0071] In another embodiment of the present application, the absorption structure 120 is used to absorb nitrogen in the air within the liquid storage chamber 170. Since the volume fraction of nitrogen in air is approximately 78%, when the absorption structure 120 absorbs some or all of the nitrogen in the air, the pressure within the liquid storage chamber 170 can be greatly reduced, thereby reducing oil leakage from the liquid storage chamber 170.

[0072] When the absorption structure 120 is used to absorb nitrogen, it can be an active material that reacts with nitrogen to form a solid substance. This active material is in the form of a thin film less than 10 microns thick. This active material can be selected from or combined with metals such as lithium, sodium, potassium, barium, calcium, and strontium. It is understood that in other embodiments of the present application, the absorption structure 120 can also be any other structure capable of absorbing nitrogen from the air, and this is not intended to be a single limitation.

[0073] In yet another embodiment of the present application, the absorption structure 120 is used to absorb nitrogen and rare gases in the air in the liquid storage chamber 170 .

[0074] The following experiment verifies the before-and-after comparison of the atomization assembly 100 in the embodiment of the present application using the absorption structure 120. An absorption structure verification group and a non-absorption structure verification group are set up respectively, and each of the absorption structure verification group and the non-absorption structure verification group is provided with two shells 110. When the large volume is left at night at the same time and observed at the same time during the day, it is found that the non-absorption structure verification group leaks when left alone, while the absorption structure verification group does not leak when left alone. Then, the two verification groups are puffed continuously for the same number of puffs at the same time. Both verification groups produce a suction curved liquid surface (i.e., part of the smoke oil enters the ventilation channel, causing the smoke oil in the liquid storage chamber 170 to drop). However, within a short period of time after the puff is finished and left alone, the non-absorption structure verification group is unable to suck back the suction curved liquid surface, while the absorption structure verification group can suck all the leaked smoke oil back into the liquid storage chamber 170.

[0075] The above are merely optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included within the scope of the claims of the present application.

Claims

1. An atomizing assembly, characterized in that: It comprises a shell; a liquid storage cavity is formed in the shell; the liquid storage cavity is used to accommodate an atomized medium; an absorption structure is arranged in the liquid storage cavity; the absorption structure is arranged to be spaced apart from the atomized medium; the absorption structure is used to absorb oxygen or nitrogen in the air in the liquid storage cavity.

2. The atomizer assembly according to claim 1, characterized in that: The absorption rate of the absorbent structure increases with increasing temperature.

3. The atomizer assembly according to claim 1, characterized in that: The absorbent structure is a deoxidizer.

4. The atomizer assembly according to claim 3, characterized in that: The deoxidizer includes one or more of reduced iron powder, activated carbon, diatomaceous earth, calcium oxide, magnesium oxide, aluminum oxide, potassium oxide, calcium chloride, sodium sulfate, potassium chloride, ferrous sulfate, sodium sulfide, and copper sulfate.

5. The atomizer assembly according to claim 1, characterized in that: The absorption structure is an active material that can react with nitrogen to form a solid substance.

6. The atomizer assembly according to claim 1, characterized in that: The absorption structure is arranged on the top of the liquid storage cavity.

7. The atomizer assembly according to claim 1, characterized in that: Assume that the space between the absorption structure and the atomized medium is a gas space; along the axial direction of the shell, the projection of the absorption structure coincides with the projection of the gas space.

8. The atomizer assembly according to any one of claims 1 to 7, characterized in that: The shell also forms an atomization chamber connected to the external atmosphere; a porous atomization core is provided in the atomization chamber; the liquid storage chamber is connected to the atomization chamber through the atomization core; the atomization assembly also includes a ventilation channel connected to the liquid storage chamber; a ventilation threshold of the ventilation channel is lower than a ventilation threshold of the atomization core.

9. The atomizer assembly according to claim 8, characterized in that: The liquid storage cavity is arranged around the atomizing cavity, and the absorption structure is arranged around the atomizing cavity; the space between the absorption structure and the atomizing medium is assumed to be a gas space, and the gas space is arranged around the atomizing cavity.

10. The atomizer assembly according to any one of claims 1 to 7, characterized in that: The liquid storage cavity is also provided with an isolating member; the isolating member is used to separate the absorption structure from the atomizing medium; the isolating member can allow gas to pass through; and the isolating member can block liquid from passing through.

11. The atomizer assembly according to claim 10, characterized in that: The isolating element is a breathable and oleophobic structure.

12. The atomizer assembly according to claim 11, characterized in that: The air-permeable and oil-repellent structure is formed by stacking multiple layers of thin film materials, and the pore size of the thin film material is set to allow air flow to pass but not allow oil to pass through.

13. The atomizer assembly according to claim 10, characterized in that: The spacer is supported below the absorbent structure.

14. The atomizer assembly according to claim 10, characterized in that: The inner wall of the liquid storage cavity forms a limiting member, and the isolating member is limited by the limiting member.

15. An aerosol generating device, characterized in that: It comprises a power supply structure and an atomizer assembly according to any one of claims 1 to 14; the power supply structure supplies power to the atomizer assembly.

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