Aerosol-generating device

Abstract

The invention provides an aerosol generating device which is provided with at least two atomizers, the first atomizer is used for atomizing a first solution, the first solution is provided with a first solvent system, the second atomizer is used for atomizing a second solution, and the second solution is provided with a second solvent system. The first solvent system is different from the second solvent system, and the heating atomization temperature T1 of the first atomizer, the phase change temperature B1 of the first solution, the heating atomization temperature T2 of the second atomizer and the phase change temperature B2 of the second solution meet the following relation: (T1-B1)-(T2-B2) > 0 DEG C. By adopting the scheme, the two atomizers can be respectively controlled to generate aerosols with different particle sizes, and the particle size control accuracy of the aerosols is improved.

Description

Technical Field

[0001] The present invention relates to the field of aerosol product technology, and in particular to an aerosol generating device. Background Technology

[0002] Aerosol-generating products, such as modern electronic cigarettes or heated tobacco products (HNB), are gradually becoming alternatives to traditional tobacco products, aiming to provide users with a safer and cleaner smoking experience.

[0003] Aerosols are gaseous dispersion systems composed of solid or liquid particles suspended in a gaseous medium. In the tobacco industry, they primarily refer to the smoke produced by aerosol-generating products. In atomized cigarettes, it mainly consists of mist, i.e., small droplets; in heated tobacco products (HNB), it is also mainly mist; however, in traditional cigarettes, aerosols also include smoke, i.e., small solid particles.

[0004] Aerosol particle size control has always been a technical bottleneck in the tobacco industry. Although non-thermal atomization particle size control is relatively easy, the resulting aerosol particles are relatively large, making it difficult to effectively enter the lungs and affecting absorption efficiency. Thermal atomization technology can achieve smaller aerosol particle sizes, but because its atomization principle involves the liquefaction of gas into small droplets, particle size control is more difficult and it is not easy to accurately control the size of aerosol particles. Summary of the Invention

[0005] The technical problem solved by the embodiments of the present invention is how to accurately control the particle size of aerosols.

[0006] To address the aforementioned technical problems, this invention provides an aerosol generating device with at least two atomizers. A first atomizer atomizes a first solution, which has a first solvent system. A second atomizer atomizes a second solution, which has a second solvent system. The first solvent system differs from the second solvent system. The heating and atomization temperature T1 of the first atomizer, the phase change temperature B1 of the first solution, the heating and atomization temperature T2 of the second atomizer, and the phase change temperature B2 of the second solution satisfy the following relationship: (T1-B1)-(T2-B2)>0℃. The heating and atomization temperature of the atomizer is the heating temperature applied by the atomizer to the atomized solution. The phase change temperature of the solution is the temperature at which the solution undergoes a phase change, specifically, the temperature at which the solution undergoes a vaporization phase change. Although most liquids can vaporize at room temperature, the vaporization phase change temperature generally refers to the critical temperature point at which a liquid undergoes vigorous vaporization. (T1-B1) and (T2-B2) are actually the difference between the heating atomization temperature and the solution phase change temperature of the two atomizers. The first atomizer and the second atomizer are only designated by name and have no fixed order relationship. Therefore, the difference between (T1-B1) and (T2-B2) is always a positive number.

[0007] Compared with the prior art, the technical solution of the embodiments of the present invention has the following beneficial effects:

[0008] When a solution is heated, it changes from a liquid to a gaseous state. The gaseous molecules then condense into small droplets upon encountering cold air, creating an atomization effect and producing an aerosol. As the condensation of gaseous molecules continues, the droplets grow larger, resulting in a larger aerosol particle size. Therefore, at the same cooling rate (with essentially the same ambient temperature), the first solution has a relatively larger difference between its heating atomization temperature T1 and phase transition temperature B1, causing it to cool to its condensation point more slowly. This results in a slower increase in aerosol particle size, contributing to the production of relatively small aerosols. Conversely, the second solution has a relatively smaller difference between its heating atomization temperature T2 and phase transition temperature B2, causing it to cool to its condensation point more quickly. This results in a faster increase in aerosol particle size, contributing to the production of relatively large aerosols. Thus, it is possible to generate both large and small aerosols separately, obtaining aerosols with different particle sizes and improving the precision of aerosol particle size control.

[0009] Optionally, (T1-B1)-(T2-B2) > 10℃. This allows for a larger difference in the heating atomization temperature and phase transition temperature between the two solvent systems, which helps to generate aerosols with more significant particle size differences. In other words, it helps to make the particle size difference between the aerosols atomized by the first atomizer and the aerosols atomized by the second atomizer more significant, thereby improving the independent control of the particle size of the aerosols obtained by the two atomizers.

[0010] Optionally, (T1-B1)-(T2-B2) > 30℃. This can further improve the significance of the difference between the particle size of the aerosol obtained by the first atomizer and the particle size of the aerosol obtained by the second atomizer, thereby improving the control accuracy of the particle size and the control effect of the particle size difference of the aerosols obtained by the first atomizer and the second atomizer respectively.

[0011] Optionally, (T1-B1)-(T2-B2) > 50℃. This is to further improve the significance of the difference between the particle size of the aerosol obtained by the first atomizer and the particle size of the aerosol obtained by the second atomizer, thereby improving the control accuracy of the particle size and the control effect of the particle size difference of the aerosols obtained by the first atomizer and the second atomizer respectively.

[0012] Optionally, (T1-B1)-(T2-B2)≥104℃. This maximizes the difference in particle size between the aerosol obtained from the first atomizer and the aerosol obtained from the second atomizer, thereby improving the control accuracy and particle size difference control effect on the aerosol obtained from the first atomizer and the second atomizer respectively.

[0013] Optionally, the heating atomization temperature T1 of the first atomizer is different from the heating atomization temperature T2 of the second atomizer. By setting different heating temperatures for the two atomizers, the significant difference in aerosol particle size generated by heating and atomizing solutions with different phase change temperatures can be further enhanced.

[0014] Optionally, since the phase transition of a liquid upon heating is vaporization, the corresponding vaporization phase transition temperature is typically the boiling point. Therefore, the phase transition temperature of a solution is either its boiling point or azeotropic point. For non-azeotropic solutions, the boiling point is the boiling point of the component with the highest mass percentage. It should be noted that boiling point or azeotropic point is not the only corresponding parameter for vigorous vaporization of a liquid. In some solutions, the vaporization phase transition temperature is the temperature of vigorous vaporization, but it differs from the boiling point or azeotropic point. Therefore, using boiling point or azeotropic point is merely to reduce technical complexity. In non-azeotropic solution systems, when the solution is completely vaporized, the component with the highest mass percentage has the greatest impact on aerosol formation; therefore, using the boiling point of this component as the technical boiling point is reasonable. It should be understood that the solution component with the highest mass percentage should have a significant difference in content compared to other solution components. If the content difference is small, for example, if the content of the highest mass percentage solution component is similar to that of the second highest mass percentage solution component, the effect of aerosol particle size control will not be significant. To demonstrate a significant difference, the mass percentage of the highest mass percentage solution component can be 20% higher than that of the second highest mass percentage solution component. To ensure that the highest mass percentage solution component exerts the main effect, its mass percentage should preferably exceed 50%.

[0015] Optionally, the first solution contains a nicotine component, and / or the second solution contains a flavor component. Since the first atomizer is used to atomize the first solution, it helps generate aerosols with smaller particle sizes. This allows the smaller aerosol particles to carry the nicotine component into the lungs, thereby accelerating nicotine absorption and utilization. Since the second atomizer is used to atomize the second solution, it helps generate aerosols with larger particle sizes. This allows the larger aerosol particles to carry the flavor component into the oral cavity, where it adheres more easily and is perceived, thus improving the perception and utilization of the flavor component. The flavor component can be common fragrances, perfumes, plant and animal extracts, etc., as long as it can exert an olfactory or gustatory effect.

[0016] Optionally, the phase transition temperature B1 of the first solution is lower than the phase transition temperature B2 of the second solution. This makes the first solution easier to heat and atomize. Within the limitation of a finite maximum heating and atomization temperature, it helps to configure a larger temperature difference between the heating and atomization temperature of the first atomizer and the phase transition temperature of the first solution. This makes it less likely for the temperature of the atomized droplets to drop below the condensation temperature, reducing the aerosol particle size growth rate and resulting in aerosols with relatively small particle sizes. Conversely, within the limitation of a finite maximum heating and atomization temperature, it helps to configure a smaller temperature difference between the heating and atomization temperature of the second atomizer and the phase transition temperature of the second solution. This makes it easier for the temperature of the atomized droplets to drop below the condensation temperature, increasing the aerosol particle size growth rate and resulting in aerosols with relatively large particle sizes.

[0017] Optionally, the heating and atomization temperature T1 of the first atomizer is greater than the heating and atomization temperature T2 of the second atomizer. In this way, relative to T1=T2, the value of (T1-B1)-(T2-B2) can be further increased, which helps to further increase the difference in particle size between the aerosol obtained by the first atomizer and the aerosol obtained by the second atomizer, and improve the control effect on aerosol particle size difference.

[0018] Optionally, the main solvent component of the first solvent system is propylene glycol, and / or the main solvent component of the second solvent system is glycerol. The main solvent component is the solvent component with the highest mass percentage. Propylene glycol and glycerol are common solvents. Propylene glycol generally refers to 1,2-propanediol, which is commonly used in the art and has a lower boiling point, while glycerol has a higher boiling point. To generate aerosols with smaller particle sizes, according to the technical principles of this invention, using propylene glycol as a solvent will be more effective; for the same reason, to generate aerosols with larger particle sizes, using glycerol as a solvent will be more effective.

[0019] Optionally, the solvent component of the first solvent system further includes glycerol, wherein the proportion of propylene glycol in the solvent component is greater than 70 wt%; and / or, the solvent component of the second solvent system further includes propylene glycol, wherein the proportion of glycerol in the solvent component is greater than 70 wt%. Mixing propylene glycol and glycerol makes it more convenient to control the phase transition temperature.

[0020] Optionally, the proportion of propylene glycol in the solvent components of the first solvent system is greater than 80 wt%, and / or the proportion of glycerol in the solvent components of the second solvent system is greater than 80 wt%. The proportions of propylene glycol and glycerol are key to controlling the phase transition temperature difference and are also important parameters for ensuring effective control of aerosol particle size. In conventional e-cigarette e-liquids, propylene glycol and glycerol are the main solvent components, and the mass percentage of solvents is usually higher than 80%, preferably higher than 90%, thus making propylene glycol and glycerol have a significant impact on the particle size of the formed aerosol. Generally, in an aerosol generation system, the solute is the active ingredient, such as nicotine or flavoring components, while other components are solvents.

[0021] Optionally, the first solvent system contains only propylene glycol, and the second solvent system contains only glycerol. The difference in boiling points between propylene glycol and glycerol allows for sufficiently significant control over aerosol particle size.

[0022] This application also provides another aerosol generating device having at least two atomizers. The first atomizer is used to atomize a first solution, and the second atomizer is used to atomize a second solution. The phase transition temperature of the first solution is lower than that of the second solution. The phase transition temperature of a solution is the temperature at which a phase transition occurs when the solution is heated, specifically the temperature at which a vaporization phase transition occurs. Although most liquids can vaporize at room temperature, the vaporization phase transition temperature generally refers to the critical temperature point at which a liquid undergoes vigorous vaporization.

[0023] The aforementioned apparatus focuses on the influence of solution phase transition temperature on particle size control, thus offering greater simplicity. It allows for easier heating and atomization of the first solution, and within a limited maximum heating and atomization temperature, prevents the temperature of the atomized droplets from dropping to the condensation temperature, thereby reducing the aerosol particle size growth rate and resulting in relatively smaller aerosols. Furthermore, within the same maximum heating and atomization temperature, especially when both atomizers operate at the same temperature, it allows for easier cooling of the atomized droplets of the second solution to the condensation temperature, contributing to an increased aerosol particle size growth rate and resulting in relatively larger aerosols. This achieves the goal of generating both large and small aerosols, improving the precision of aerosol particle size control.

[0024] Optionally, the temperature difference between the phase transition temperature of the first solution and the phase transition temperature of the second solution is greater than or equal to 10°C.

[0025] Optionally, the temperature difference between the phase transition temperature of the first solution and the phase transition temperature of the second solution is greater than or equal to 30°C.

[0026] Optionally, the temperature difference between the phase transition temperature of the first solution and the phase transition temperature of the second solution is greater than or equal to 50°C.

[0027] Optionally, the temperature difference between the phase transition temperature of the first solution and the phase transition temperature of the second solution is greater than or equal to 104°C.

[0028] Optionally, since the phase change of a liquid upon heating is vaporization, and the corresponding vaporization phase change temperature is typically the boiling point, the phase change temperature of a solution is either its boiling point or azeotropic point. For non-azeotropic solutions, the boiling point is the boiling point of the component with the highest mass percentage. If the multiple substances in the solution cannot azeotrope, since the component with the significantly higher mass percentage is the main component responsible for atomization, defining the boiling point of the component with the significantly higher mass percentage as the boiling point of the solution ensures a more accurate phase change temperature.

[0029] Optionally, the first solution contains a nicotine component, and / or the second solution contains a flavor component.

[0030] Optionally, the component with the highest mass percentage content in the first solution is propylene glycol, and / or the component with the highest mass percentage content in the second solution is glycerol.

[0031] This application also provides another aerosol generating device, comprising at least two atomizers. A first atomizer releases a first aerosol based on a first solvent system, and a second atomizer releases a second aerosol based on a second solvent system. The phase transition temperature of the first solvent system is lower than that of the second solvent system. Since the solvent is the main component of the aerosol and has the greatest impact on the aerosol particle size, the difference in aerosol particle size control can be effectively constructed by distinguishing the solvent systems. In this case, the mass percentage of solvent in the first and second aerosols is preferably greater than 80%, and more preferably, the mass percentage of solvent can be greater than 90%. Generally, in an aerosol generating system, the solute is the active ingredient, such as nicotine or flavoring components, and the other components are solvents.

[0032] The aforementioned device primarily considers the influence of the solvent on the phase transition temperature of the solution, thus offering a relatively simpler approach. It allows for easier heating and atomization of the first solvent system. Within a limited maximum heating and atomization temperature, it prevents the temperature of the atomized droplets from easily dropping to the condensation temperature, reducing the aerosol particle size growth rate and resulting in aerosols with relatively small particle sizes. Furthermore, within the same maximum heating and atomization temperature, especially when both atomizers operate at the same temperature, it allows the temperature of the atomized droplets of the second solvent system to more easily drop to the condensation temperature, contributing to an increased aerosol particle size growth rate and resulting in aerosols with relatively large particle sizes. This achieves the goal of generating both large and small aerosols, improving the precision of aerosol particle size control. The aforementioned device is particularly suitable for electronic cigarette systems, where the solvent is the main component of the e-liquid, with a relatively low solute percentage and minimal impact on the solution's phase transition temperature.

[0033] Optionally, the temperature difference between the phase transition temperature of the first solvent system and the phase transition temperature of the second solvent system is greater than or equal to 10°C. By establishing a difference in aerosol particle size control based on the phase transition temperatures of the different solvent systems, the overall system complexity is reduced. Furthermore, due to the low solute content, the solvent system can play a major role in controlling the aerosol particle size; therefore, this system is simple and effective.

[0034] Optionally, the temperature difference between the phase transition temperature of the first solvent system and the phase transition temperature of the second solvent system is greater than or equal to 30°C.

[0035] Optionally, the temperature difference between the phase transition temperature of the first solvent system and the phase transition temperature of the second solvent system is greater than or equal to 50°C.

[0036] Optionally, the temperature difference between the phase transition temperature of the first solvent system and the phase transition temperature of the second solvent system is greater than or equal to 104°C.

[0037] Optionally, since the phase change of a liquid after heating is vaporization, the corresponding vaporization phase change temperature is typically the boiling point. Therefore, the phase change temperature of the solvent system is the boiling point or azeotropic point of the solvent system. When the solvent system is not azeotropic, the boiling point of the solvent system is the boiling point of the solvent component with the highest mass percentage.

[0038] Optionally, the first aerosol contains a nicotine component, and / or the second aerosol contains a fragrance component.

[0039] Optionally, the main component of the first solvent system is propylene glycol, and / or the main component of the second solvent system is glycerol. The main component is the component with the highest mass percentage.

[0040] Optionally, the first solvent system contains only propylene glycol, and the second solvent system contains only glycerol. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of an aerosol generating device according to an embodiment of the present invention;

[0042] Figure 2 This is a partial structural schematic diagram of another aerosol generating device in an embodiment of the present invention.

[0043] Figure 3 This is a top view of the exit ends of the first transmission channel and the second transmission channel;

[0044] Figure 4 This is a schematic diagram showing the relative positions of the first and second transmission channels;

[0045] Figure 5 This is another schematic diagram showing the relative positions of the first and second transmission channels;

[0046] Figure 6 This is a schematic diagram illustrating the effect of using the aerosol generating device;

[0047] Figure 7 This is a schematic diagram of the first transmission channel in its initial state.

[0048] Figure 8 This is a schematic diagram of a first transmission channel in an extended state.

[0049] Figure label:

[0050] 1-Aerosol generating device; 2a-First atomizer; 2b-Second atomizer; 3a-First solution; 3b-Second solution; 4-Airflow inlet; 5a-First airflow regulator; 5b-Second airflow regulator; 6a-First transmission channel; 6b-Second transmission channel; 7a-Outlet end of first transmission channel 6a; 7b-Outlet end of second transmission channel 6b; 7c-Guide section; 8-Power supply; 9-Controller; 10-Binding structure; 11-Contraction section; 12-Expansion section; 13a-First container; 13b-Second container; 14a-First aerosol; 14b-Second aerosol; 15-Extension section; 16-Locking structure; 17-Rebound section. Detailed Implementation

[0051] To make the above-mentioned objectives, features and beneficial effects of the embodiments of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0052] This invention provides an aerosol generating device, which can be an electronic atomizing smoke device or a vapor smoke device; of course, based on the knowledge in the art, this type of aerosol generating device can also be applied to the field of drug atomization.

[0053] The aerosol generating device has at least two atomizers. The first atomizer is used to atomize a first solution, which has a first solvent system. The second atomizer is used to atomize a second solution, which has a second solvent system. The first solvent system is different from the second solvent system. The heating and atomization temperature T1 of the first atomizer, the phase change temperature B1 of the first solution, the heating and atomization temperature T2 of the second atomizer, and the phase change temperature B2 of the second solution satisfy the following relationship: (T1-B1)-(T2-B2)>0℃.

[0054] The above embodiments can generate aerosols with different particle sizes. In this application, the particle sizes of large-diameter and small-diameter aerosols are relative. The aerosol with a relatively large particle size is called a large-diameter aerosol, and the aerosol with a relatively small particle size is called a small-diameter aerosol. Large-diameter aerosols can have a particle size of 1 micrometer or more, even reaching tens of micrometers. Small-diameter aerosols typically have a particle size less than 1 micrometer, even reaching the 0.1 micrometer level. The aerosol particle sizes mentioned above are measured values, and these measured values ​​are related to the measurement method; different measurement methods may yield different particle size values.

[0055] In some embodiments, (T1-B1)-(T2-B2) > 10°C.

[0056] Furthermore, (T1-B1)-(T2-B2)>30℃.

[0057] Furthermore, (T1-B1)-(T2-B2)>50℃.

[0058] Furthermore, (T1-B1)-(T2-B2)≥104℃. For example, the main component of the first solvent system is propylene glycol (PG), and the main component of the second solvent system is glycerol (VG). Propylene glycol (referring to 1,2-propanediol commonly used in the art) has a boiling point of 187.3℃ or 188.2℃, and glycerol has a boiling point of 290℃ or 290.9℃. The maximum difference between the boiling points of propylene glycol and glycerol is 103.6℃. Therefore, (T1-B1)-(T2-B2)≥104℃ can be configured to allow the lower-boiling-point propylene glycol to obtain a higher heating temperature, thereby further reducing the particle size of the aerosol generated by the propylene glycol solvent system, or to allow the higher-boiling-point glycerol to obtain a lower heating temperature, thereby further increasing the particle size of the aerosol generated by the glycerol solvent system. It should be noted that there are certain limits to the temperature increase or decrease. Generally, the temperature increase should not exceed the decomposition temperature of the solution components, and the temperature decrease should not be lower than the vaporization phase transition temperature of the solution.

[0059] In some embodiments, since the phase change of a liquid after heating is vaporization, the phase change temperature in this application refers to the temperature at which it changes from a liquid state to a gaseous state, that is, the phase change temperature refers to the vaporization phase change temperature.

[0060] In practical implementation, the corresponding vaporization phase transition temperature is typically the boiling point. Therefore, the phase transition temperature of a solution is its boiling point or azeotropic point. For non-azeotropic solutions, the boiling point is the boiling point of the component with the highest mass percentage. That is, the phase transition temperature of the first solution is its boiling point or azeotropic point. When the first solution is non-azeotropic, its boiling point is the boiling point of the component with the highest mass percentage. The phase transition temperature of the second solution is also its boiling point or azeotropic point. When the second solution is non-azeotropic, its boiling point is the boiling point of the component with the highest mass percentage.

[0061] In some embodiments, the first solution contains a nicotine component.

[0062] In some embodiments, the second solution contains a fragrance component.

[0063] In some embodiments, the phase transition temperature B1 of the first solution is less than the phase transition temperature B2 of the second solution.

[0064] In some embodiments, the heating atomization temperature T1 of the first atomizer is different from the heating atomization temperature T2 of the second atomizer.

[0065] In some embodiments, the heating atomization temperature T1 of the first atomizer is greater than the heating atomization temperature T2 of the second atomizer.

[0066] In other embodiments, the phase transition temperature B1 of the first solution is lower than the phase transition temperature B2 of the second solution, and the heating atomization temperature T1 of the first atomizer is higher than the heating atomization temperature T2 of the second atomizer. For the first solution, using a relatively lower phase transition temperature and configuring a higher heating atomization temperature helps to obtain aerosols with relatively smaller particle sizes. For the second solution, using a relatively higher phase transition temperature and configuring a lower heating atomization temperature helps to obtain aerosols with relatively larger particle sizes.

[0067] In some embodiments, the primary solvent component of the first solution is propylene glycol (PG). Since propylene glycol has a boiling point of 188°C, the boiling point of the first solution is mainly affected by the boiling point of the solvent component propylene glycol, which helps to configure the first solution to have a relatively low phase transition temperature, thereby facilitating the obtaining of aerosols with relatively small particle sizes.

[0068] The solute in the first solution is a nicotine salt. For example, nicotine citrate, nicotine benzoate, nicotine malate, nicotine tartrate, etc.

[0069] In some embodiments, the primary solvent component of the second solvent system is glycerol (VG). Glycerol has a boiling point of approximately 290°C. The boiling point of the second solution is primarily influenced by the boiling point of the solvent component glycerol, thereby contributing to the formulation of the second solution with a relatively high phase transition temperature, which facilitates the obtaining of aerosols with relatively large particle sizes.

[0070] The solute in the second solution can be various flavorings, such as lemon flavoring, blueberry flavoring, tobacco flavoring, and peppermint flavoring. These flavorings serve as aroma components.

[0071] In some embodiments, based on the boiling point of propylene glycol (approximately 188°C) and glycerol (approximately 290°C), the first and second solutions are atomized under a heating condition of 260°C. Calculations based on (T1-B1)-(T2-B2) show that (260°C-188°C)-(260°C-290°C) = 102°C > 0°C. In this case, the aerosol particle size generated by the first solution is significantly smaller than that generated by the second solution. Under the same system, increasing the heating atomization temperature of the first solution, for example, to 270°C, and decreasing the heating atomization temperature of the second solution, for example, to 250°C, changes the calculation to (270°C-188°C)-(250°C-290°C) = 122°C > 0°C. This results in an even greater difference in aerosol particle size between the first and second solutions. The above examples are intended to explain the concept of the invention, as in general, the heating temperature should be higher than the vaporization phase transition temperature of the solution.

[0072] In some embodiments, the solvent component of the first solvent system further includes glycerol, wherein the proportion of propylene glycol in the solvent component is greater than 70 wt%; and / or, the solvent component of the second solvent system further includes propylene glycol, wherein the proportion of glycerol in the solvent component is greater than 70 wt%.

[0073] In some embodiments, propylene glycol and water are used as solvents in the first solution to form an azeotropic solvent system. The azeotropic point is also significantly lower than the boiling point of the second solution, which uses glycerol as a solvent, thereby achieving the effect of the first solution having a relatively low boiling point.

[0074] The second solution primarily uses glycerol as the main solvent component, with a small amount of propylene glycol added. Glycerol constitutes more than 70 wt% of the solvent component. More preferably, glycerol constitutes more than 80 wt% of the solvent component. This further improves the particle size control of the generated aerosol and enhances the significant difference in particle size between the aerosols obtained from the first and second atomizers.

[0075] Assuming a constant atomizer ambient temperature and heating atomization temperature, for example, in an aerosol generating device with the same heating atomization temperature, if the solution system (hereinafter referred to as the solution) is heated to the same 260°C, then in a system where propylene glycol is the main solvent component, the gas begins to produce aerosol after cooling from 260°C to its condensation point. In a system where glycerol is the main solvent component, aerosol is produced immediately after vaporization. Glycerol aerosol is produced faster, resulting in a continuously increasing particle size, thus producing a better visual effect for the smoke. Propylene glycol condenses more slowly, resulting in a slower particle size increase, allowing for a smaller inlet particle size. Therefore, by using solution systems with different vaporization phase change temperatures, different aerosol particle sizes can be achieved. In a dual-atomizer system, assuming the heating temperature is the same, a solution system with a lower vaporization phase change temperature (e.g., low boiling point or low azeotropic point) produces smaller aerosol particle sizes, while a solution system with a higher vaporization phase change temperature (e.g., high boiling point or high azeotropic point) produces larger aerosol particle sizes.

[0076] Of course, the above-mentioned solution system is not limited to the propylene glycol / glycerol (PG / VG) system, as long as the vaporization phase transition temperatures (e.g., boiling points or azeotropic points) of the two solution systems can be distinguished and are significantly different. It should be noted that in a mixed solution system, if the multiple substances in the solution system cannot azeotropically combine, since the solvent component with a significantly higher percentage content is the main component responsible for the atomization effect, defining the vaporization phase transition temperature of the solvent component with a significantly higher percentage content as the vaporization phase transition temperature of the solution system can ensure that the obtained vaporization phase transition temperature of the solution system is relatively accurate.

[0077] Set up Control Experiment 1, and configure Comparative Example, Example 1, Example 2, Example 3 and Example 4, with specific configuration parameters as follows:

[0078] In the comparative example, the first and second solutions used the same solvent system, which consisted of 30% propylene glycol and 70% glycerol by mass. The first solution contained nicotine, and the second solution contained peppermint flavoring. The vaporization phase transition temperature of both solutions was approximately 222°C, and the heating atomization temperature was 260°C.

[0079] In Example 1, the first solvent system comprises 70 wt% propylene glycol and 30 wt% glycerol, and the first solution comprises nicotine. The second solvent system comprises 70 wt% glycerol and 30 wt% propylene glycol, and the second solution comprises peppermint flavoring. The heating and atomization temperature T1 of the first atomizer is 260°C, and the vaporization phase transition temperature B1 of the first solution is approximately 198°C. The heating and atomization temperature T2 of the second atomizer is 260°C, and the vaporization phase transition temperature B of the second solution is approximately 222°C.

[0080] In Example 2, the first solvent system comprises 80 wt% propylene glycol and 20 wt% glycerol, and the first solution comprises nicotine. The second solvent system comprises 80 wt% glycerol and 20 wt% propylene glycol, and the second solution comprises peppermint flavoring. The heating and atomization temperature T1 of the first atomizer is 260°C, and the vaporization phase transition temperature B1 of the first solution is approximately 194°C. The heating and atomization temperature T2 of the second atomizer is 260°C, and the vaporization phase transition temperature B of the second solution is approximately 234°C.

[0081] In Example 3, the first solvent system comprises 70 wt% propylene glycol and 30 wt% glycerol, and the first solution comprises nicotine. The second solvent system comprises 70 wt% glycerol and 30 wt% propylene glycol, and the second solution comprises peppermint flavoring. The heating and atomization temperature T1 of the first atomizer is 270°C, and the vaporization phase transition temperature B1 of the first solution is approximately 198°C. The heating and atomization temperature T2 of the second atomizer is 250°C, and the vaporization phase transition temperature B of the second solution is approximately 222°C.

[0082] In Example 4, the first solvent system comprises 95 wt% propylene glycol and 5 wt% water, and the first solution comprises nicotine. The second solvent system comprises 70 wt% glycerol and 30 wt% propylene glycol, and the second solution comprises peppermint flavoring. The heating and atomization temperature T1 of the first atomizer is 260°C, and the vaporization phase transition temperature B1 of the first solution is approximately 178°C. The heating and atomization temperature T2 of the second atomizer is 260°C, and the vaporization phase transition temperature B of the second solution is approximately 222°C.

[0083] In the above embodiments, the types and concentrations of nicotine salts and flavoring components are the same. The concentrations of nicotine salts and flavoring components are both 2% by mass. The heating element of the heating appliance is a ceramic core, and the parameters of each ceramic core are the same. At the same time, the parameters of other appliances and external environmental parameters are kept consistent.

[0084] The aerosol obtained by the first atomizer is denoted as the first aerosol. The aerosol obtained by the second atomizer is denoted as the second aerosol. The median particle size of the first aerosol obtained by the first atomizer and the median particle size of the second aerosol obtained by the second atomizer in the comparative examples, Example 1, Example 2, Example 3, and Example 4 were measured. The particle size was measured using a laser particle size analyzer of the same model. The specific results are shown in Table 1 below.

[0085] Table 1

[0086]

[0087] The results in Table 1 show that the higher the propylene glycol content in the first solvent system and the higher the glycerol content in the second solvent system, the better the control effect on the difference in particle size between the first and second aerosols. The lower the vaporization phase transition temperature of the first solution and the higher the heating and atomization temperature of the first atomizer, the higher the vaporization phase transition temperature of the second solution and the lower the heating and atomization temperature of the second atomizer, the better the control effect on the difference in particle size between the first and second aerosols. The larger the value of (T1-B1)-(T2-B2), the better the control effect on the difference in particle size between the first and second aerosols.

[0088] This application also provides another aerosol generating device having at least two atomizers, a first atomizer for atomizing a first solution and a second atomizer for atomizing a second solution, wherein the phase transition temperature of the first solution is lower than the phase transition temperature of the second solution.

[0089] Since the phase change of a liquid upon heating is vaporization, the phase change temperature in this application refers to the temperature at which it changes from a liquid state to a gaseous state, i.e., the vaporization phase change temperature.

[0090] In some embodiments, the corresponding vaporization phase change temperature is typically the boiling point. Therefore, the phase change temperature of the solution is the boiling point or azeotropic point of the solution. For non-azeotropic solutions, the boiling point of the solution is the boiling point of the solution component with the highest mass percentage.

[0091] In some embodiments, the temperature difference between the phase transition temperature of the first solution and the phase transition temperature of the second solution is greater than or equal to 10°C.

[0092] Furthermore, the temperature difference between the phase transition temperature of the first solution and the phase transition temperature of the second solution is greater than or equal to 30°C.

[0093] Furthermore, the temperature difference between the phase transition temperature of the first solution and the phase transition temperature of the second solution is greater than or equal to 50°C.

[0094] In some embodiments, the first solution contains a nicotine component.

[0095] In some embodiments, the second solution contains a fragrance component.

[0096] In some embodiments, the component with the highest mass percentage in the first solution is propylene glycol; in other embodiments, the component with the highest mass percentage in the second solution is glycerol. Since propylene glycol and glycerol have different boiling points, using solution systems with different boiling points can result in aerosol particle sizes of varying sizes. In a dual-atomizer system, assuming the heating temperature is the same, aerosol particles produced by a low-boiling-point or low-azeotropic-point solution system will have smaller particle sizes, while aerosol particles produced by a high-boiling-point or high-azeotropic-point solution system will have larger particle sizes. Based on this principle, the first solution uses a solution system with a low vaporization phase transition temperature. Adding nicotine to the first solution helps generate small-particle-size aerosols to carry nicotine into the lungs for absorption. Similarly, the second solution uses a solution system with a high vaporization phase transition temperature. Adding fragrance components to the second solution generates large-particle-size aerosols to carry fragrance components for deposition in the oral cavity, aiding in the perception of fragrance.

[0097] This application also provides another aerosol generating device, which has at least two atomizers, a first atomizer releasing a first mist based on a first solvent system, and a second atomizer releasing a second mist based on a second solvent system, wherein the phase transition temperature of the first solvent system is lower than the phase transition temperature of the second solvent system.

[0098] Since the phase change of a liquid upon heating is vaporization, the corresponding vaporization phase change temperature is typically the boiling point. Therefore, in some embodiments, the phase change temperature of the solvent system is the boiling point or azeotropic point of the solvent system. When the solvent system on which the aerosol is based is not azeotropic, the boiling point of the solvent system is the boiling point of the component with the highest mass percentage.

[0099] In some embodiments, the temperature difference between the phase transition temperature of the first solvent system and the phase transition temperature of the second solvent system is greater than or equal to 10°C.

[0100] Furthermore, the temperature difference between the phase transition temperature of the first solvent system and the phase transition temperature of the second solvent system is greater than or equal to 30°C.

[0101] Furthermore, the temperature difference between the phase transition temperature of the first solvent system and the phase transition temperature of the second solvent system is greater than or equal to 50°C.

[0102] In some embodiments, the first aerosol contains a nicotine component.

[0103] In some embodiments, the second aerosol contains a fragrance component.

[0104] In some embodiments, the main component of the first solvent system is propylene glycol; in other embodiments, the main component of the second solvent system is glycerol.

[0105] Based on the above embodiments, to further ensure the effect of aerosol particle size control, the following aerosol generating device can be used. See Figures 1 to 6 The aerosol generating device 1 provides two atomizers, each corresponding to a transmission channel. For example, the aerosol generating device 1 may include a first transmission channel 6a and a second transmission channel 6b. Hereinafter, the aerosol generated by the first atomizer 2a is referred to as first aerosol 14a, and the aerosol generated by the second atomizer 2b is referred to as second aerosol 14b. The particle size of the first aerosol 14a is smaller than that of the second aerosol 14b. The first aerosol 14a is provided through the first transmission channel 6a, and the second aerosol 14b is provided through the second transmission channel 6b. By using different transmission channels to independently transmit aerosols of different particle sizes, mixing of aerosols of different particle sizes during transmission can be avoided, further improving the independent control effect on the particle size of aerosols of different sizes.

[0106] In some embodiments, the outlet end 7b of the second transmission channel 6b has a constriction structure 10 along the flow direction of the second aerosol 14b in the second transmission channel 6b, the constriction structure 10 having a contraction portion 11 and an expansion portion 12.

[0107] Thus, the contraction section 11 of the constriction structure 10 reduces the cross-sectional area of ​​the channel, which helps increase the probability of particle collisions in the second aerosol 14b, thereby increasing the particle size of the second aerosol 14b. The expansion section 12 increases the cross-sectional area of ​​the channel, which helps reduce the flow velocity of particles in the second aerosol 14b and diffuse them to the periphery, improving the separation effect between the second aerosol 14b and the first aerosol 14a. This helps the larger-diameter second aerosol 14b deposit inside the oral cavity after entering, reducing the probability and amount of mixing between the second aerosol 14b and the first aerosol 14a in the oral cavity. Since the particle size of the first aerosol 14a is smaller than that of the second aerosol 14b, and they are transported through the first transmission channel 6a and the second transmission channel 6b respectively, the first aerosol 14a and the second aerosol 14b with different particle sizes can be transported separately, avoiding the mixing of the first aerosol 14a and the second aerosol 14b and causing an increase in the particle size of the first aerosol 14a. In this way, the particle size of the first aerosol 14a and the second aerosol 14b can be controlled separately, improving the ease of particle size control for the first aerosol 14a and the second aerosol 14b. In addition, the channel cross-sectional area before the contraction portion 11 of the nozzle structure 10 is relatively large, which can slow down the flow velocity of the second aerosol, allowing the aerosol to have more time to increase in size; the larger channel cross-section can also reduce the airflow temperature, enhance heat exchange with the surroundings, and further promote the increase of aerosol particle size.

[0108] In specific implementation, the expansion section 12 is roughly trumpet-shaped and extends away from the first transmission channel 6a to guide the second aerosol 14b to diffuse away from the first transmission channel 6a. This helps guide the second aerosol to move towards the oral cavity wall, increasing the probability of it adhering to the oral cavity wall. This further reduces the probability of the second aerosol 14b and the first aerosol 14a mixing in the oral cavity.

[0109] In a specific implementation, the second transmission channel 6b surrounds at least a portion of the first transmission channel 6a. Thus, the temperature of the second aerosol 14b in the second transmission channel 6b can insulate the first transmission channel 6a, slowing down the cooling of the first aerosol 14a during transmission within the first transmission channel 6a. This helps reduce the rate of particle size increase of the first aerosol 14a during transmission within the first transmission channel 6a, inhibiting the increase in particle size and helping to maintain the first aerosol 14a at a small particle size.

[0110] In some embodiments, the aerosol generating device 1 has a housing for housing various devices.

[0111] In some non-limiting embodiments, a first container 13a and a second container 13b are provided inside the outer casing. The first container 13a is used to store a first solution (also referred to as first e-liquid or first cartridge, etc.) 3a. The second container 13b is used to store a second solution (also referred to as second e-liquid or second cartridge, etc.) 3b.

[0112] The first atomizer 2a is used to atomize the first solution 3a. The first atomizer 2a may include a first heating element, which heats and atomizes the first solution 3a.

[0113] The second atomizer 2b is used to atomize the second solution 3b. The second atomizer 2b may include a second heating element, which heats and atomizes the second solution 3b.

[0114] In some non-limiting embodiments, the second transmission channel 6b surrounds the first transmission channel 6a starting from the first heating element.

[0115] In some other non-limiting embodiments, the second transmission channel 6b begins to wrap around the first transmission channel 6a in the region near the exit end 7a of the first transmission channel 6a.

[0116] The first transmission channel 6a can be a cylindrical pipe. The second transmission channel 6b can be a ring-shaped cylindrical pipe.

[0117] The second transmission channel 6b partially surrounds the first transmission channel 6a. The bottom of the first container 13a extends into the first transmission channel 6a to provide the first solution 3a to the first atomizer 2a. The sidewall of the first container 3a forms the sidewall of the first transmission channel 6a, or it may not form a sidewall. In this case, the first transmission channel 6a forms an independent cylindrical column above the first atomizer 2a. That is, the cylindrical sidewall of the first transmission channel 6a has a suitable channel reserved so that the first atomizer 2a can extend into the first transmission channel 6a. The first aerosol 14a generated by the first atomizer 2a flows towards the near end through the first transmission channel 6a. The bottom of the second container 13b extends into the second transmission channel 6b to provide the second solution 3b to the second atomizer 2b. The aerosol generated by the second atomizer 2b flows towards the near end through the second transmission channel 6b. At this time, due to the obstruction of the position of the first container 13a, the second transmission channel 6b is separated by the first container 13a. Therefore, it may partially surround the first transmission channel 6a, or it may not surround it. At this time, the second transmission channel 6b forms an independent annular column above the first atomizer 2a and the second atomizer 2b. That is, the annular column sidewall of the second transmission channel 6b has a suitable channel reserved so that the first atomizer 2a can extend into the first transmission channel 6a after passing through the annular column sidewall. At the same time, in the opposite direction, the annular column sidewall of the second transmission channel 6b has another suitable channel reserved so that the second atomizer 2b can extend into the second transmission channel 6b.

[0118] The second transmission channel 6b completely surrounds the first transmission channel 6a. The first container 13a can avoid the second transmission channel 6b. The bottom of the first container 13a extends into the cylindrical pipe of the first transmission channel 6a through an extension section, so that the cylindrical pipe of the first transmission channel 6a and the annular pipe of the second transmission channel 6b are both continuous, and the first transmission channel 6a and the second transmission channel 6b form a nested structure. The second transmission channel 6b completely surrounds the first transmission channel 6a, which can maximize the heat preservation effect of the second transmission channel 6b on the first transmission channel 6a, reduce the heat loss rate of the first aerosol 14a in the first transmission channel 6a, further reduce the particle size increase rate of the first aerosol 14a during the transmission in the first transmission channel 6a, suppress the increase in the particle size of the first aerosol 14a, and keep the particle size of the first aerosol 14a in a small state.

[0119] In some other non-limiting embodiments, the second transmission channel 6b and the first transmission channel 6a are arranged side by side.

[0120] In a specific implementation, the first transmission channel 6a is located at the center of the second transmission channel 6b. This facilitates the more complete diffusion of the second aerosol 14b output from the second transmission channel 6b to the oral cavity walls via the constriction structure 10, while the first aerosol 14a output from the first transmission channel 6a can directly reach the pharynx and enter the lungs. This effectively reduces the probability of contact and collision between the first aerosol 14a and the second aerosol 14b, and decreases the probability of mixing between them within the oral cavity.

[0121] In some embodiments, the second transmission channel 6b is located close to the outer casing. Furthermore, the second transmission channel 6b is in contact with the outer casing to facilitate heat dissipation through the casing, improving the heat dissipation efficiency of the second transmission channel 6b. This allows the second aerosol 14b transported within the second transmission channel 6b to cool down more quickly, resulting in a larger particle size of the second aerosol 14b. This helps to obtain larger particle size second aerosol 14b, which in turn facilitates its deposition in the oral cavity.

[0122] In some non-limiting embodiments, the second transmission channel 6b may be configured to have a bend. During the transmission of the second aerosol 14b in the second transmission channel 6b, the bend can change the cross-sectional area of ​​the second transmission channel 6b, the flow direction of the second aerosol 14b, and the length of the transmission path. This helps to increase the probability of collision between individual particles in the second aerosol 14b, and the relatively long transmission path also helps to reduce the temperature of the second aerosol 14b. Both particle collisions and temperature reduction contribute to the increase in the particle size of the second aerosol 14b, thereby increasing the particle size of the second aerosol 14b.

[0123] In some embodiments, the surface of the first transmission channel 6a facing the expansion portion 12 has a guide portion 7c. The guide portion 7c is used to guide the second aerosol 14b to diffuse in a direction away from the first transmission channel 6a, so as to further improve the separation effect between the second aerosol 14b and the first aerosol 14a and further reduce the probability of the second aerosol 14b and the first aerosol 14a mixing in the oral cavity. In addition, the guide portion 7c can also change the movement direction of the second aerosol 14b, so that some particles in the second aerosol 14b can collide with each other, which helps to further increase the particle size of the second aerosol 14b.

[0124] In some non-limiting embodiments, the guide portion 7c is an annular guide ramp. The annular guide ramp is disposed around the surface of the first transmission channel 6a facing the expansion portion 12.

[0125] Furthermore, the guide section 7c is located within the second transmission channel 6b.

[0126] In a specific implementation, the outlet end 7a of the first transmission channel 6a extends beyond the connection area between the contraction section 11 and the expansion section 12. Because the outlet end 7a of the first transmission channel 6a extends beyond the connection area, it avoids the area where the flow velocity of the second aerosol 14b is accelerated and collisions occur due to the contraction of the second transmission channel 6b by the contraction section 11. The outlet end 7a of the first transmission channel 6a is at least within the expansion section 12, and the flow velocity of the second aerosol 14b output from the expansion section 12 is relatively low and it flows away from the first transmission channel 6a. This improves the separation effect of the first aerosol 14a and the second aerosol 14b and reduces the probability of the first aerosol 14a and the second aerosol 14b mixing in the oral cavity.

[0127] In some embodiments, the first transport channel 6a is in the shape of a straight tube. Because the straight tube-shaped first transport channel 6a has a high degree of uniformity in its cross-section, without any bends or similar constriction structures, it can reduce the probability of collisions and fusion of particles during the transport of the first aerosol 14a within the first transport channel 6a. This helps maintain the first aerosol 14a in a small particle size state, making it easier for the small-particle-size first aerosol 14a to enter the lungs and be rapidly absorbed.

[0128] In addition, the straight tubular first transmission channel 6a helps maintain the flow rate of the first aerosol 14a during the transmission of the first aerosol 14a. After entering the mouth, it can still maintain the flow rate and small particle size of the first aerosol 14a, so that the first aerosol 14a can quickly pass through the oral cavity and reach the lungs via the pharynx.

[0129] At the proximal end of the aerosol generating device 1, the first transmission channel 6a has an outlet end 7a, and the second transmission channel 6b has an outlet end 7b. The outlet end 7a of the first transmission channel 6a is lower than the outlet end 7b of the second transmission channel 6b. Thus, the airflow of the first aerosol 14a output from the outlet end 7a of the first transmission channel 6a can exert pressure on the second aerosol 14b. Under the pressure exerted by the airflow of the first aerosol 14a, the second aerosol 14b is more likely to move towards the periphery of the oral cavity, thereby contacting and depositing in the oral cavity, which helps to enhance the expression of oral sensory components.

[0130] In some embodiments, the first transmission channel 6a has a fixed section and an extension section 15, the extension section 15 being retractably connected to the fixed section, as shown in the figure. Figure 8 The extension section 15 is configured to move away from the fixed section when subjected to suction, thereby extending the length of the first transmission channel 6a. (Refer to...) Figure 7When the suction disappears, the extension section 15 returns to its initial state, in which it overlaps with the fixed section. Thus, when the user inhales, the extension section 15 can move away from the fixed section, extending the transmission path of the first aerosol 14a through the first transmission channel 6a. This further reduces the probability of the first aerosol 14a and the second aerosol 14b coming into contact in the oral cavity, helping to guide the first aerosol 14a directly to the pharynx and then into the lungs. After the user's suction disappears, the first aerosol 14a has already been delivered to the user's oral cavity and lungs. The extension section 15 returning to its initial state reduces the length of the first transmission channel 6a, avoiding interference from the extension section 15 with the user's oral cavity and tongue, ensuring a better user experience.

[0131] A locking structure 16 is provided between the fixed section and the extension section 15. The locking structure 16 is used to limit the maximum movement distance of the extension section 15 relative to the fixed section. The locking structure 16 can also prevent the extension section 15 from falling off the fixed end, thereby improving the safety of the aerosol generating device 1.

[0132] In some non-limiting embodiments, the locking structure 16 may include a locking block disposed on one of the fixed section and the extension section 15, and a sliding groove disposed on the other of the fixed section and the extension section 15, wherein when the fixed section moves relative to the extension section 15 to the end of the extension section 15, the locking surfaces of the locking block and the sliding groove lock together to restrict the fixed section from continuing to move relative to the extension section 15.

[0133] Furthermore, the aerosol generating device 1 also includes a rebound section 17, which is used to drive the extension section 15 back to the initial state when the suction disappears.

[0134] The spring-loaded part 17 can be a spring, rubber, or other component with a spring-loaded function. The spring-loaded part 17 can be disposed inside the slide groove or outside the slide groove and connected to at least one of the fixed section or the extension section 15.

[0135] In some embodiments, the maximum elongation length of the extension segment 15 can be limited based on the material parameters and structural characteristics of the extension segment 15, and it can be ensured that it can naturally spring back after being extended.

[0136] In some implementations, the first transmission channel 6a is shorter than the second transmission channel 6b.

[0137] The outer shell is also provided with an airflow inlet 4. The airflow inlet 4 can be evenly distributed or symmetrically distributed on the outer shell, as long as it can at least provide the corresponding airflow for the first atomizer 2a and the second atomizer 2b.

[0138] In some non-limiting embodiments, a first airflow regulator 5a may be provided in the channel between the airflow inlet 4 and the first atomizer 2a. The first airflow regulator 5a is used to control the airflow rate from the airflow inlet 4 to the first atomizer 2a.

[0139] In some non-limiting embodiments, a second airflow regulator 5b may be provided in the channel between the airflow inlet 4 and the second atomizer 2b. The second airflow regulator 5b is used to control the airflow rate from the airflow inlet 4 into the second atomizer 2b.

[0140] The first airflow regulator 5a and the second airflow regulator 5b can be a grid structure or a regulating valve with airflow regulation function.

[0141] In a specific implementation, the aerosol generating device 1 may further include a power supply 8 and a controller 9. The power supply 8 supplies power to the electrical components in the aerosol generating device 1. The electrical components may be a first atomizer 2a, a second atomizer 2b, a first airflow regulator 5a, a second airflow regulator 5b, etc. The controller 9 may be a control chip used to precisely control the power supply current from the power supply 8 to each electrical component, thereby enabling control over the atomization temperature of the first atomizer 2a, the atomization temperature of the second atomizer 2b, the airflow regulation capability of the first airflow regulator 5a, and the airflow regulation capability of the second airflow regulator 5b, etc.

[0142] Furthermore, the first atomizer 2a, the first container 13a, and the first solution 3a within the first container 13a can be integrated into a single unit and replaced entirely. The first atomizer 2a connects to the power supply 8 and the controller 9 via contacts to obtain power and operate. Similarly, the second atomizer 2b, the second container 13b, and the second solution 3b within the second container 13b can be integrated into a single unit and replaced entirely. When the second atomizer 2b primarily provides flavor components, a suitable flavored second solution (also known as a cartridge) can be selected according to needs, enabling multiple flavor options.

[0143] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article indicates that the preceding and following related objects have an "or" relationship.

[0144] In the embodiments of this application, "multiple" refers to two or more.

[0145] The descriptions of "first," "second," etc., appearing in the embodiments of this application are for illustrative purposes and to distinguish the objects being described. They have no order and do not indicate any special limitation on the number of devices in the embodiments of this application, nor do they constitute any limitation on the embodiments of this application.

[0146] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims. Although there may be extreme examples that are inconsistent with the concept of the present invention, such examples are situations that can be clearly excluded by those skilled in the art and are not within the scope of protection of the present invention.

Claims

1. An aerosol generating apparatus comprising at least two atomizers, a first atomizer for atomizing a first solution having a first solvent system, and a second atomizer for atomizing a second solution having a second solvent system, characterized in that... The first solvent system is different from the second solvent system. The heating and atomization temperature T1 of the first atomizer, the phase change temperature B1 of the first solution, the heating and atomization temperature T2 of the second atomizer, and the phase change temperature B2 of the second solution satisfy the following relationship: (T1-B1)-(T2-B2)>0℃.

2. The aerosol generating apparatus as described in claim 1, characterized in that, (T1-B1)-(T2-B2)>10℃.

3. The aerosol generating apparatus as described in claim 2, characterized in that, (T1-B1)-(T2-B2)>30℃.

4. The aerosol generating apparatus as described in claim 3, characterized in that, (T1-B1)-(T2-B2)>50℃.

5. The aerosol generating apparatus as described in claim 4, characterized in that, (T1-B1)-(T2-B2)≥104℃.

6. The aerosol generating apparatus as described in claim 1, characterized in that, The heating and atomization temperature T1 of the first atomizer is different from the heating and atomization temperature T2 of the second atomizer.

7. The aerosol generating apparatus as described in claim 1, characterized in that, The phase transition temperature is the boiling point or azeotropic point of the solution. For non-azeotropic solutions, the boiling point is the boiling point of the solution component with the highest mass percentage.

8. The aerosol generating apparatus according to any one of claims 1 to 7, characterized in that, The first solution contains nicotine, and / or the second solution contains flavoring.

9. The aerosol generating apparatus according to any one of claims 1 to 7, characterized in that, The phase transition temperature B1 of the first solution is less than the phase transition temperature B2 of the second solution.

10. The aerosol generating apparatus according to any one of claims 1 to 7, characterized in that, The heating and atomization temperature T1 of the first atomizer is greater than the heating and atomization temperature T2 of the second atomizer.

11. The aerosol generating apparatus according to any one of claims 1 to 7, characterized in that, The main solvent component of the first solvent system is propylene glycol, and / or the main solvent component of the second solvent system is glycerol.

12. The aerosol generating apparatus as described in claim 11, characterized in that, The solvent component of the first solvent system further includes glycerol, wherein the proportion of propylene glycol in the solvent component is greater than 70 wt%; and / or, the solvent component of the second solvent system further includes propylene glycol, wherein the proportion of glycerol in the solvent component is greater than 70 wt%.

13. The aerosol generating apparatus as described in claim 12, characterized in that, In the first solvent system, propylene glycol accounts for more than 80 wt% of the solvent components, and / or, in the second solvent system, glycerol accounts for more than 80 wt% of the solvent components.

14. An aerosol generating apparatus comprising at least two atomizers, a first atomizer for atomizing a first solution and a second atomizer for atomizing a second solution, characterized in that, The phase transition temperature of the first solution is lower than that of the second solution.

15. The aerosol generating apparatus as described in claim 14, characterized in that, The temperature difference between the phase transition temperature of the first solution and the phase transition temperature of the second solution is greater than or equal to 50°C.

16. The aerosol generating apparatus as described in claim 14, characterized in that, The phase transition temperature of a solution is either its boiling point or azeotropic point. For non-azeotropic solutions, the boiling point is the boiling point of the component with the highest mass percentage.

17. The aerosol generating apparatus according to any one of claims 14 to 16, characterized in that, The first solution contains nicotine, and / or the second solution contains flavoring.

18. The aerosol generating apparatus according to any one of claims 14 to 16, characterized in that, The component with the highest mass percentage content in the first solution is propylene glycol, and / or the component with the highest mass percentage content in the second solution is glycerol.

19. An aerosol generating apparatus comprising at least two atomizers, a first atomizer releasing a first aerosol based on a first solvent system, and a second atomizer releasing a second aerosol based on a second solvent system, characterized in that... The phase transition temperature of the first solvent system is lower than that of the second solvent system.

20. The aerosol generating apparatus as described in claim 19, characterized in that, The temperature difference between the phase transition temperature of the first solvent system and the phase transition temperature of the second solvent system is greater than or equal to 50°C.

21. The aerosol generating apparatus as described in claim 19, characterized in that, The phase transition temperature of a solvent system is either the boiling point or the azeotropic point of the solvent system. When the solvent system is not azeotropic, the boiling point of the solvent system is the boiling point of the component with the highest mass percentage.

22. The aerosol generating apparatus according to any one of claims 19 to 21, characterized in that, The first aerosol contains nicotine components, and / or the second aerosol contains fragrance components.

23. The aerosol generating apparatus according to any one of claims 19 to 21, characterized in that, The main component of the first solvent system is propylene glycol, and / or the main component of the second solvent system is glycerol.

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