Aerosol-generating device

Abstract

The invention provides an aerosol generating device which is provided with at least two atomizers, a first atomizer generates first aerosol, a second atomizer generates second aerosol, the particle size of the first aerosol is smaller than that of the second aerosol, the first aerosol is provided through a first transmission channel, and the second aerosol is provided through a second transmission channel. The second aerosol is provided through a second transmission channel, the outlet end of the second transmission channel is provided with an opening binding structure, and the opening binding structure is provided with a contraction part and an expansion part in the flowing direction of the second aerosol in the second transmission channel. According to the scheme, the particle sizes of the first aerosol and the second aerosol can be respectively controlled, and the simple degree of particle size control of the first aerosol and the second aerosol is improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of aerosol generating article, in particular to an aerosol generating device. BACKGROUND

[0002] Aerosol generating articles such as modern electronic cigarettes or heat not burn (HNB) products are gradually becoming substitutes for traditional tobacco products, aiming to provide users with a safer and cleaner smoking experience.

[0003] Aerosol refers to a gaseous dispersion system composed of solid or liquid particles suspended in a gaseous medium. In the tobacco field, it mainly refers to the smoke generated by aerosol generating articles. In atomized smoke, it is mainly mist, i.e. small droplets; in heat not burn (HNB), it is also mainly mist; but in traditional cigarettes, aerosol also includes smoke, i.e. small solid particles.

[0004] Aerosol particle size control has always been a technical bottleneck in the tobacco field. Although the control of non-thermal atomized particle size is relatively easy, the aerosol particle size formed is large, which is difficult to effectively enter the lungs, affecting the absorption efficiency; the aerosol particle size of thermal atomization technology can be made smaller, but after mixing small particle size aerosol and large particle size aerosol, aerosol particles will collide and fuse with each other, so that the particle size control loses its significance. Therefore, particle size control is difficult. SUMMARY

[0005] The technical problem solved by embodiments of the present application is aerosol particle size control.

[0006] To solve the above technical problems, embodiments of the present application provide an aerosol generating device, which has at least two atomizers, a first atomizer generates a first aerosol, and a second atomizer generates a second aerosol, the particle size of the first aerosol is smaller than the particle size of the second aerosol, the first aerosol is provided through a first transmission channel, the second aerosol is provided through a second transmission channel, the outlet end of the second transmission channel has a beam port structure, and along the flow direction of the second aerosol in the second transmission channel, the beam port structure has a contraction part and an expansion part.

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

[0008] The aerosol generating device has at least two atomizers, a first atomizer generates a first aerosol and provides through a first transmission channel, and a second atomizer generates a second aerosol and provides through a second transmission channel. The particle size of the first aerosol is smaller than that of the second aerosol. The outlet end of the second transmission channel has a beam port structure, and along the flow direction of the second aerosol in the second transmission channel, the beam port structure in the second transmission channel has a contraction part and an expansion part. In this way, the contraction part of the beam port structure helps to increase the probability of mutual collision of particles in the second aerosol, thereby increasing the particle size of the second aerosol. The expansion part helps to reduce the flow speed of the particles in the second aerosol and diffuse to the periphery, so as to help the large-particle-size second aerosol to deposit inside the oral cavity after entering the oral cavity. Since the first transmission channel and the second transmission channel are relatively independent, the first aerosol and the second aerosol with different particle sizes can be transmitted separately, avoiding the mixing of the first aerosol and the second aerosol to cause the increase of the particle size of the first aerosol. In this way, the particle sizes of the first aerosol and the second aerosol can be controlled separately, and the simplicity of the particle size control of the first aerosol and the second aerosol is improved. In addition, the channel cross-sectional area before the contraction part of the beam port structure is large, which can slow down the flow speed of the second aerosol, so that the aerosol has more time to increase; the large channel cross section can also reduce the airflow temperature and strengthen the heat exchange with the periphery, further promoting the increase of the aerosol particle size.

[0009] Optionally, the second transmission channel wraps at least part of the first transmission channel.

[0010] Optionally, the first transmission channel is located at the center of the second transmission channel.

[0011] Optionally, the expansion part extends towards a direction away from the first transmission channel to guide the second aerosol to diffuse in a direction away from the first transmission channel.

[0012] Optionally, the surface of the outlet end of the first transmission channel facing the surface of the expansion part has a guide part for guiding the second aerosol to diffuse in a direction away from the first transmission channel.

[0013] Optionally, the outlet end of the first transmission channel exceeds the joint area of the contraction part and the expansion part.

[0014] Optionally, the outlet end of the first transmission channel has a fixed section and an extension section, the extension section is telescopically connected to the fixed section, and the extension section is configured to move towards a direction away from the fixed section when subjected to a suction force, so as to lengthen the transmission channel of the first aerosol. When the suction force disappears, it returns to the initial state, and in the initial state, the extension section overlaps with the fixed section.

[0015] Optionally, a locking structure is arranged between the fixed section and the extension section, and the locking structure is used to limit the maximum moving distance of the extension section relative to the fixed section.

[0016] Optionally, the aerosol generating device further comprises a resilient part, which is used to drive the extension section to return to the initial state when the suction force disappears.

[0017] Optionally, the first transmission channel is in a straight pipe shape.

[0018] Optionally, the outlet end of the first transmission channel is lower than the outlet end of the second transmission channel.

[0019] Optionally, the first transmission channel is shorter than the second transmission channel.

[0020] The application further provides an aerosol generating device, which comprises at least two atomizers, a first atomizer generates a first aerosol, and a second atomizer generates a second aerosol, the particle size of the first aerosol is smaller than that of the second aerosol, the first aerosol is provided through a first transmission channel, the second aerosol is provided through a second transmission channel, and the first transmission channel is in a straight pipe shape.

[0021] Optionally, the first transmission channel is shorter than the second transmission channel, and / or the first transmission channel is located at the center, and the second transmission channel wraps at least part of the first transmission channel.

[0022] The application further provides an aerosol generating device, which comprises at least two atomizers, a first atomizer generates a first aerosol, and a second atomizer generates a second aerosol, the particle size of the first aerosol is smaller than that of the second aerosol, the first aerosol is provided through a first transmission channel, the second aerosol is provided through a second transmission channel, and the first transmission channel is shorter than the second transmission channel.

[0023] Optionally, the first transmission channel is located at the center, and the second transmission channel wraps at least part of the first transmission channel.

[0024] The application further provides an aerosol generating device, which comprises at least two atomizers, a first atomizer generates a first aerosol, and a second atomizer generates a second aerosol, the particle size of the first aerosol is smaller than that of the second aerosol, the first aerosol is provided through a first transmission channel, the second aerosol is provided through a second transmission channel, and the first transmission channel is located at the center, and the second transmission channel wraps at least part of the first transmission channel. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is a structural schematic diagram of an aerosol generating device in an embodiment of the application;

[0026] Figure 2 is another partial structure schematic diagram of an aerosol generating device in an embodiment of the present application;

[0027] Figure 3 is a top view of the outlet end of the first transmission channel and the outlet end of the second transmission channel;

[0028] Figure 4 is a schematic diagram of a relative position of the first transmission channel and the second transmission channel;

[0029] Figure 5 is another schematic diagram of a relative position of the first transmission channel and the second transmission channel;

[0030] Figure 6 is a schematic diagram of a use effect of the aerosol generating device;

[0031] Figure 7 is a schematic diagram of the first transmission channel in an initial state;

[0032] Figure 8 is a schematic diagram of the first transmission channel in an extended state.

[0033] Reference signs:

[0034] 1-aerosol generating device; 2a-first atomizer; 2b-second atomizer; 3a-first solution; 3b-second solution; 4-air inlet; 5a-first air flow regulator; 5b-second air flow regulator; 6a-first transmission channel; 6b-second transmission channel; 7a-outlet end of the first transmission channel 6a; 7b-outlet end of the second transmission channel 6b; 7c-guide part; 8-power supply; 9-controller; 10-beam port structure; 11-contracting part; 12-expanding part; 13a-first container; 13b-second container; 14a-first aerosol; 14b-second aerosol; 15-extended section; 16-locking structure; 17-springback part. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and beneficial effects of the embodiments of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0036] The present application provides an aerosol generating device, which can be an electronic atomizing cigarette, also known as a vapor cigarette. Of course, based on the cognition in the art, such an aerosol generating device can also be applied to the field of drug atomization.

[0037] Referring to Figures 1 to 6The aerosol-generating device 1 has at least two atomizers, a first atomizer 2a generates a first aerosol 14a, and a second atomizer 2b generates a second aerosol 14b, the particle size of the first aerosol 14a is smaller than the particle size of the second aerosol 14b, the first aerosol 14a is provided through a first transmission channel 6a, and the second aerosol 14b is provided through a second transmission channel 6b, and the outlet end 7b of the second transmission channel 6b has a beam port structure 10, and along the flow direction of the second aerosol 14b in the second transmission channel 6b, the beam port structure 10 has a contraction part 11 and an expansion part 12.

[0038] With the above scheme, the outlet end 7b of the second transmission channel 6b has a beam port structure 10, and along the flow direction of the second aerosol 14b in the second transmission channel 6b, the beam port structure 10 in the second transmission channel 6b has a contraction part 11 and an expansion part 12, so that the cross-sectional area of the channel can be reduced through the contraction part 11 of the beam port structure 10, which helps to increase the probability of mutual collision of particles in the second aerosol 14b, thereby increasing the particle size of the second aerosol 14b, and the expansion part 12 can increase the cross-sectional area of the channel, which helps to reduce the flow speed of the particles in the second aerosol 14b and diffuse to the periphery, and improve the separation effect of the second aerosol 14b and the first aerosol 14a, and help the large-particle-size second aerosol 14b to deposit inside the oral cavity after entering the oral cavity, reduce the probability and amount of mixing of 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 the particle size of the second aerosol 14b, and is transmitted 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 transmitted respectively, avoiding the mixing of the first aerosol 14a and the second aerosol 14b to cause the increase of the particle size of the first aerosol 14a. In this way, the particle sizes of the first aerosol 14a and the second aerosol 14b can be controlled respectively, and the ease of controlling the particle sizes of the first aerosol 14a and the second aerosol 14b is improved.

[0039] In specific implementation, the expansion part 12 is generally in the shape of a horn, and the expansion part 12 extends in a direction away from the first transmission channel 6a to guide the second aerosol 14b to diffuse in a direction away from the first transmission channel 6a, which helps to guide the second aerosol to move in a direction towards the oral cavity wall surface to improve the probability of adhesion to the oral cavity wall surface. Further reduce the probability of mixing of the second aerosol 14b and the first aerosol 14a in the oral cavity.

[0040] In a specific implementation, the second transport passage 6b wraps at least a portion of the first transport passage 6a. In this way, the temperature of the second aerosol 14b in the second transport passage 6b can serve as a heat preservation for the first transport passage 6a, slowing down the temperature drop of the first aerosol 14a during the transportation in the first transport passage 6a, helping to reduce the rate of increase of the particle size of the first aerosol 14a during the transportation in the first transport passage 6a, and inhibiting the increase of the particle size of the first aerosol 14a, which helps to keep the particle size of the first aerosol 14a in a small particle size state.

[0041] In some embodiments, the aerosol-generating device 1 has a housing for carrying various components.

[0042] In some non-limiting embodiments, the housing is provided with a first container 13a and a second container 13b. The first container 13a is used to store a first solution (also referred to as a first tobacco tar or a first tobacco cartridge, etc.) 3a. The second container 13b is used to store a second solution (also referred to as a second tobacco tar or a second tobacco cartridge, etc.) 3b.

[0043] The first atomizer 2a is used to atomize the first solution 3a. The first atomizer 2a can include a first heating element for heating and atomizing the first solution 3a.

[0044] The second atomizer 2b is used to atomize the second solution 3b. The second atomizer 2b can include a second heating element for heating and atomizing the second solution 3b.

[0045] In some non-limiting embodiments, the second transport passage 6b wraps the first transport passage 6a from the first heating element.

[0046] In other non-limiting embodiments, the second transport passage 6b wraps the first transport passage 6a at a region close to the outlet end 7a of the first transport passage 6a.

[0047] The first transport passage 6a can be a cylindrical pipe. The second transport passage 6b can be an annular cylindrical pipe.

[0048] The second transmission channel 6b partially surrounds the first transmission channel 6a, wherein 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 side wall of the first container 3a constitutes the side wall of the first transmission channel 6a, or the side wall of the first transmission channel 6a can be formed independently above the first atomizer 2a, that is, the side wall of the cylinder of the first transmission channel 6a is provided with a suitable passage so that the first atomizer 2a extends into the first transmission channel 6a, and the first aerosol 14a generated by the first atomizer 2a flows to the proximal 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, and the aerosol generated by the second atomizer 2b flows to the proximal end through the second transmission channel 6b. At this time, the second transmission channel 6b is blocked by the first container 13a due to the position of the first container 13a, and thus partially surrounds the first transmission channel 6a, or the second transmission channel 6b can not surround the first transmission channel 6a, that is, the second transmission channel 6b is formed as an independent ring cylinder above the first atomizer 2a and the second atomizer 2b, that is, the side wall of the ring cylinder of the second transmission channel 6b is provided with a suitable passage so that the first atomizer 2a extends into the first transmission channel 6a after passing through the side wall of the ring cylinder, and the side wall of the ring cylinder of the second transmission channel 6b is provided with another suitable passage in the opposite direction so that the second atomizer 2b extends into the second transmission channel 6b.

[0049] The second transmission channel 6b fully surrounds the first transmission channel 6a. The first container 13a can avoid the second transmission channel 6b, and 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 ring cylinder pipe of the second transmission channel 6b are in a continuous state, and the first transmission channel 6a and the second transmission channel 6b form a nested structure. The second transmission channel 6b fully 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 transmission in the first transmission channel 6a, inhibit the increase of the particle size of the first aerosol 14a, and keep the particle size of the first aerosol 14a in a small particle size state.

[0050] In still other non-limiting embodiments, the second transmission channel 6b and the first transmission channel 6a are arranged side by side.

[0051] In specific implementations, the first transmission channel 6a is located in the center of the second transmission channel 6b. In this way, the second aerosol 14b output by the second transmission channel 6b can be more fully diffused to the wall surface of the oral cavity via the beam port structure 10, while the first aerosol 14a output by the first transmission channel 6a can directly reach the pharynx and enter the lungs, effectively reducing the probability of mutual contact and collision of the first aerosol 14a and the second aerosol 14b, and reducing the probability of mixing of the first aerosol 14a and the second aerosol 14b in the oral cavity.

[0052] In some embodiments, the second transmission channel 6b is close to the shell. Further, the second transmission channel 6b is in contact with the shell to facilitate heat dissipation of the second transmission channel 6b via the shell, improve the heat dissipation efficiency of the second transmission channel 6b, so that the second aerosol 14b transmitted in the second transmission channel 6b can be cooled down faster, so that the particle size of the second aerosol 14b increases, which helps to obtain a second aerosol 14b with a large particle size, thereby facilitating the deposition of the second aerosol 14b in the oral cavity.

[0053] In some non-limiting embodiments, the second transmission channel 6b can be provided with a bending portion. During the transmission of the second aerosol 14b in the second transmission channel 6b, the bending portion provided 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, which helps to increase the collision probability of particles in the second aerosol 14b, and the relatively long transmission path also helps to reduce the temperature of the second aerosol 14b. The collision of particles and the reduction of temperature both help to increase the particle size of the second aerosol 14b, thereby increasing the particle size of the second aerosol 14b.

[0054] In some embodiments, the surface of the first transmission channel 6a facing the expansion portion 12 has a guide portion 7c for guiding the second aerosol 14b to diffuse in a direction away from the first transmission channel 6a, to further improve the separation effect of the second aerosol 14b and the first aerosol 14a, and further reduce the probability of mixing of the second aerosol 14b and the first aerosol 14a in the oral cavity. In addition, the movement direction of the second aerosol 14b can also be changed by the guide portion 7c, so that part of the particles in the aerosol 14b can also collide with each other, which helps to further increase the particle size of the second aerosol 14b.

[0055] In some non-limiting embodiments, the guide portion 7c is an annular guide slope. The annular guide slope is arranged around the surface of the first transmission channel 6a facing the expansion portion 12.

[0056] Further, the guide portion 7c is located in the second transmission channel 6b.

[0057] In a specific implementation, the outlet end 7a of the first transmission channel 6a is beyond the joint area of the contraction section 11 and the expansion section 12. The outlet end 7a of the first transmission channel 6a is beyond the joint area, so that the outlet end 7a of the first transmission channel 6a can avoid the area where the flow speed of the second aerosol 14b is accelerated and collides due to the contraction of the second transmission channel 6b by the contraction section 11, and the outlet end 7a of the first transmission channel 6a is at least in the expansion section 12, the flow speed of the second aerosol 14b output in the expansion section 12 is small, and the second aerosol 14b is directed away from the first transmission channel 6a, which can improve the separation effect of the first aerosol 14a and the second aerosol 14b, and reduce the probability of mixing of the first aerosol 14a and the second aerosol 14b in the oral cavity.

[0058] In some embodiments, the first transmission channel 6a is in a straight pipe shape. Due to the high consistency of the channel section of the straight pipe-shaped first transmission channel 6a, there is no any bending, and there is no similar constriction structure, which can reduce the probability of collision and fusion of particles during the transmission of the first aerosol 14a in the first transmission channel 6a, and help to maintain the first aerosol 14a in a small particle size state. The first aerosol 14a in the small particle size state is more easily inhaled into the lungs and thus quickly absorbed.

[0059] In addition, the straight pipe-shaped first transmission channel 6a helps to maintain the flow speed of the first aerosol 14a during the transmission of the first aerosol 14a. After the inlet, the flow speed and the small particle size of the first aerosol 14a can still be maintained, so that the first aerosol 14a can quickly pass through the oral cavity and reach the lungs via the pharynx.

[0060] 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. In this way, the airflow of the first aerosol 14a output by the outlet end 7a of the first transmission channel 6a can apply pressure to the second aerosol 14b, so that the second aerosol 14b is more easily moved to the periphery of the oral cavity and thus deposited in the oral cavity, which helps to improve the performance of the composition perceived by the oral cavity.

[0061] In some embodiments, the first transmission channel 6a has a fixed section and an extension section 15, and the extension section 15 is telescopically connected to the fixed section. Referring to Figure 8 , the extension section 15 is configured to move away from the fixed section when subjected to suction, and is in an extended state to extend the length of the first transmission channel 6a. Referring to Figure 7When the suction force disappears, the elongated section 15 returns to the initial state in which the elongated section 15 overlaps with the fixed section. In this way, when the user sucks, the elongated section 15 can move away from the fixed section to lengthen the length of the first transmission channel 6a to the first aerosol 14a, further reduce the probability of the first aerosol 14a and the second aerosol 14b contacting in the oral cavity, and help guide the first aerosol 14a to the pharynx and then to the lungs. After the suction force disappears, the first aerosol 14a has been delivered to the oral cavity and the lungs of the user, the elongated section 15 returns to the initial state, the length of the first transmission channel 6a can be reduced, the interference of the elongated section 15 to the oral cavity and the tongue of the user can be avoided, and the user experience can be ensured.

[0062] In some non-limiting embodiments, the elongated section 15 can be located outside the fixed end.

[0063] The fixed section and the elongated section 15 are provided with a locking structure 16 for limiting the maximum movement distance of the elongated section 15 relative to the fixed section. The locking structure 16 can also prevent the elongated section 15 from falling off the fixed end, and improve the use safety of the aerosol generating device 1.

[0064] In some non-limiting embodiments, the locking structure 16 can include a locking block provided on one of the fixed section and the elongated section 15, and a sliding groove provided on the other of the fixed section and the elongated section 15. When the fixed section moves to the end of the elongated section 15 relative to the elongated section 15, the locking surfaces of the locking block and the sliding groove are locked to limit the fixed section from continuing to move relative to the elongated section 15.

[0065] Further, the aerosol generating device 1 also includes a resilient portion 17 for driving the elongated section 15 to return to the initial state when the suction force disappears.

[0066] The resilient portion 17 can be a spring, rubber, or other components with a resilient function. The resilient portion 17 can be provided in the sliding groove or outside the sliding groove and connected to at least one of the fixed section or the elongated section 15.

[0067] In some embodiments, the maximum elongation length of the elongated section 15 can be limited based on the material parameters and structural characteristics of the elongated section 15, and the elongated section 15 can naturally return to the initial state after elongation, for example, a plastic elongated section with natural elasticity can be used, which can be elongated when sucked and naturally return to the initial state after the suction force disappears.

[0068] In some embodiments, the first transmission channel 6a is shorter than the second transmission channel 6b.

[0069] Referring to Figures 1 to 6The application also provides an aerosol generating device 1 having at least two atomizers, a first atomizer 2a generating a first aerosol, and a second atomizer 2b generating a second aerosol, the first aerosol having a smaller particle size than the second aerosol, the first aerosol being provided through a first transmission channel 6a, and the second aerosol being provided through a second transmission channel 6b, the first transmission channel 6a being in a straight pipe shape.

[0070] In some embodiments, the first transmission channel 6a is in a straight pipe shape. Due to the high consistency of the channel section of the straight pipe-shaped first transmission channel 6a, there is no any bending, which can reduce the probability of collision and fusion of particles during the transmission of the first aerosol 14a in the first transmission channel 6a, and help to maintain the first aerosol 14a in a small particle size state. The first aerosol 14a in a small particle size state is more easily inhaled into the lungs and thus quickly absorbed.

[0071] In addition, the straight pipe-shaped first transmission channel 6a helps to maintain the flow speed of the first aerosol 14a during the transmission of the first aerosol 14a. After the inlet, the flow speed of the first aerosol 14a and the small particle size can still be maintained, so that the first aerosol 14a can quickly pass through the oral cavity and reach the lungs through the pharynx.

[0072] At the mouth 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. In this way, the airflow of the first aerosol 14a output by the outlet end 7a of the first transmission channel 6a can apply pressure to the second aerosol 14b, so that the second aerosol 14b is more easily moved to the periphery of the oral cavity and thus contacts and deposits in the oral cavity, helping the oral cavity to perceive the performance of the ingredients. In a specific implementation, the outlet end 7b of the second transmission channel 6b has a beam structure 10, which has a contraction part 11 and an expansion part 12 along the flow direction of the second aerosol 14b in the second transmission channel 6b.

[0073] In some embodiments, the first transmission channel 6a is shorter than the second transmission channel 6b.

[0074] In some embodiments, the first transmission channel 6a is located at the center, and the second transmission channel 6b surrounds at least part of the first transmission channel 6a.

[0075] The second transmission channel 6b can partially surround the first transmission channel 6a or completely surround the first transmission channel 6a.

[0076] More details about the first transmission channel 6a, the second transmission channel 6b and other components in the aerosol generating device 1 can be found in the above-mentioned embodiments, which will not be repeated here.

[0077] Referring to Figures 1 to 6 , the present application also provides an aerosol generating device 1 having at least two atomizers, a first atomizer 2a generating a first aerosol 14a, and a second atomizer 2b generating a second aerosol 14b, the particle size of the first aerosol 14a being smaller than that of the second aerosol 14b, the first aerosol 14a being provided through a first transmission channel 6a, and the second aerosol 14b being provided through a second transmission channel 6b, the first transmission channel 6a being shorter than the second transmission channel 6b.

[0078] By configuring the first transmission channel 6a to be shorter than the second transmission channel 6b, the probability of the particle size of the first aerosol 14a increasing during transmission in the first transmission channel 6a can be reduced, which helps to output the first aerosol 14a with a relatively small particle size. Moreover, the first aerosol 14a and the second aerosol 14b with different particle sizes are transmitted through independent first transmission channel 6a and second transmission channel 6b, which improves the control effect on the particle size of the first aerosol 14a and the second aerosol 14b.

[0079] In some embodiments, the first transmission channel 6a is located at the center, and the second transmission channel 6b surrounds at least a part of the first transmission channel 6a.

[0080] The second transmission channel 6b can partially surround the first transmission channel 6a, or completely surround the first transmission channel 6a.

[0081] More details about the first transmission channel 6a, the second transmission channel 6b and other components in the aerosol generating device 1 can be found in the above-mentioned embodiments, which will not be repeated here.

[0082] Referring to Figures 1 to 6 , the present application also provides an aerosol generating device 1 having at least two atomizers, a first atomizer 2a generating a first aerosol 14a, and a second atomizer 2b generating a second aerosol 14b, the particle size of the first aerosol 14a being smaller than that of the second aerosol 14b, the first aerosol 14a being provided through a first transmission channel 6a, and the second aerosol 14b being provided through a second transmission channel 6b, the first transmission channel 6a being located at the center, and the second transmission channel 6b surrounding at least a part of the first transmission channel 6a.

[0083] The first transmission channel 6a of the small-particle-size first aerosol 14a can be arranged at the center of the aerosol generating device 1 of the device to reduce heat dissipation of the first aerosol 14a, and can be kept warm by the second transmission channel 6b of the large-particle-size second aerosol 14b at the periphery to provide a barrier for heat loss, reduce the cooling rate of the first aerosol 14a, and help maintain the small-particle-size state of the first aerosol 14a.

[0084] For more information about the first transmission channel 6a, the second transmission channel 6b, and other components in the aerosol generating device 1, please refer to the relevant description in the above embodiments, which will not be repeated here.

[0085] Based on the aerosol generating device 1 provided in any of the above embodiments, the housing is further provided with an airflow inlet 4. The airflow inlet 4 can be uniformly arranged on the housing, or can be symmetrically arranged, so as to at least meet the requirement of providing corresponding airflow for the first atomizer 2a and the second atomizer 2b.

[0086] In some non-limiting embodiments, a first airflow regulator 5a can be arranged on the channel between the airflow inlet 4 and the first atomizer 2a, and the first airflow regulator 5a is used to control the air flow entering the first atomizer 2a from the airflow inlet 4.

[0087] In some non-limiting embodiments, a second airflow regulator 5b can be arranged on the channel between the airflow inlet 4 and the second atomizer 2b, and the second airflow regulator 5b is used to control the air flow entering the second atomizer 2b from the airflow inlet 4.

[0088] The first airflow regulator 5a and the second airflow regulator 5b can be a grid structure, or a regulating valve with airflow flow regulating function, etc.

[0089] In specific implementation, the aerosol generating device 1 can further include a power supply 8 and a controller 9. The power supply 8 supplies power to the power-consuming components in the aerosol generating device 1. The power-consuming components can be the first atomizer 2a, the second atomizer 2b, the first airflow regulator 5a, the second airflow regulator 5b, etc. The controller 9 can be a control chip, which is used to accurately control the power supply current of the power supply 8 to each power-consuming component. In this way, the control of the atomization temperature of the first atomizer 2a, the atomization temperature of the second atomizer 2b, the airflow regulating ability of the first airflow regulator 5a, the airflow regulating ability of the second airflow regulator 5b, etc. can be realized.

[0090] Further, the first atomizer 2a, the first container 13a, and the first solution 3a in the first container 13a can be integrated as a whole and replaced as a whole. The first atomizer 2a is connected to the power supply 8 and the controller 9 through contacts to obtain power and work. Similarly, the second atomizer 2b, the second container 13b, and the second solution 3b in the second container 13b can be integrated as a whole and replaced as a whole. When the second atomizer 2b mainly provides flavor components, the second solution (also referred to as a cartridge) of a suitable taste can be selected according to needs to achieve multiple taste selection. The flavor components can be common essences, spices, plant and animal extracts, etc., as long as they can exert olfactory or gustatory perception effects.

[0091] Based on the aerosol generating device 1 provided in any of the above embodiments, in order to ensure the effect of aerosol particle size difference control, different solution systems can also be used for cooperation. For example, the first solution has a first solvent system, the second solution has 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 transition temperature B1 of the first solution, the heating atomization temperature T2 of the second atomizer, and the phase transition temperature B2 of the second solution satisfy the following relationship: (T1-B1)-(T2-B2) > 0℃.

[0092] The heating atomization temperature of the atomizer is the heating temperature applied by the atomizer to the atomized solution. The phase transition temperature of the solution is the temperature at which the solution is heated to undergo phase transition, which can be the temperature at which the solution is heated to undergo vaporization phase transition. Although most liquids can also vaporize at room temperature, the vaporization phase transition temperature generally refers to the temperature critical point at which the liquid undergoes violent vaporization. (T1-B1) and (T2-B2) are actually the difference between the heating atomization temperature of the two atomizers and the phase transition temperature of the solution. The first atomizer and the second atomizer are only named and referred to, and there is no fixed order relationship, so the difference between (T1-B1) and (T2-B2) is always positive.

[0093] With the above scheme, the solvent system is heated from liquid to gaseous state, and then the gaseous molecules are condensed into small droplets when meeting cold air, which forms the atomization effect to obtain aerosol. With the continuous condensation of gaseous molecules, the droplets will become larger and larger, resulting in the increase of the particle size of aerosol. Therefore, at the same cooling rate (the ambient temperature is basically the same), since the difference between the heating atomization temperature T1 and the phase change temperature B1 of the first solvent system is relatively large, the first solvent system is slower to reduce to the condensation point, so the particle size of the first aerosol grows slowly, which helps to produce aerosol with relatively small particle size. While the difference between the heating atomization temperature T2 and the phase change temperature B2 of the second solvent system is relatively small, the temperature of the second solvent system is faster to reduce to the condensation point, so the particle size of the second aerosol grows quickly, which helps to produce aerosol with relatively large particle size. Thus, the particle size of the aerosol can be accurately controlled to control the particle size of the second aerosol with large particle size and the first aerosol with small particle size.

[0094] The above embodiments can produce aerosols with different particle sizes. The particle sizes of the second aerosol with large particle size and the first aerosol with small particle size in the present application are relative. Among the two aerosols, the one with relatively large particle size is called large particle size aerosol, and the one with relatively small particle size is called small particle size aerosol. The particle size of the large particle size aerosol can be more than 1 micron, even up to tens or even hundreds of microns. The particle size of the small particle size aerosol is usually less than 1 micron, even up to 0.1 micron. The above aerosol particle size is a measured value, and the measured value is related to the measurement method. Different measurement methods may have different measured particle size values.

[0095] In some embodiments, (T1-B1)-(T2-B2) > 10℃. This can make the difference between the heating atomization temperature and the phase change temperature of the two solvent systems larger, which helps to generate the first aerosol and the second aerosol with more significant particle size difference, that is, to make the difference between the particle size of the first aerosol atomized by the first atomizer and the particle size of the second aerosol atomized by the second atomizer more significant, and to improve the independent control effect of the particle size of the aerosols obtained by the two atomizers.

[0096] Further, (T1-B1)-(T2-B2) > 30℃. This further improves the difference between the particle size of the first aerosol atomized by the first atomizer and the particle size of the second aerosol atomized by the second atomizer, and improves the control accuracy of the particle size of the aerosols obtained by the first atomizer and the second atomizer and the control effect of the particle size difference.

[0097] Further, (T1-B1) - (T2-B2) > 50℃. To further improve the significance of the difference between the particle size of the first aerosol obtained by atomization of the first atomizer and the particle size of the second aerosol obtained by atomization of the second atomizer, to improve the control accuracy of the particle size of the aerosols obtained by the first atomizer and the second atomizer respectively, and to improve the control effect of the particle size difference.

[0098] Further, (T1-B1) - (T2-B2) ≥ 104℃. For example, the main component of the first solvent system is glycerol (PG), and the main component of the second solvent system is glycerol (VG). The boiling point of propylene glycol (1,2-propylene glycol commonly used in the art) is 187.3℃ or 188.2℃, and the boiling point of glycerol is 290℃ or 290.9℃. The maximum difference between the boiling points of propylene glycol and glycerol is 103.6℃, so (T1-B1) - (T2-B2) ≥ 104℃ can be configured, so that the low-boiling propylene glycol obtains a higher heating temperature, thereby further reducing the size of the aerosol particle size generated by the propylene glycol solvent system, or so that the high-boiling glycerol obtains a lower heating temperature, thereby further increasing the size of the aerosol particle size generated by the glycerol solvent system; it should be noted that at this time the temperature increases or decreases within a certain limit, and generally the temperature increase should not exceed the temperature at which the solution components decompose, and the temperature decrease should not be lower than the vaporization phase change temperature of the solution.

[0099] In some embodiments, since the phase change of the liquid after heating is vaporization, the phase change temperature in this application refers to the temperature when the liquid changes into gas, that is, the phase change temperature refers to the vaporization phase change temperature.

[0100] In specific implementation, the corresponding vaporization phase change temperature is typically the boiling point, so the phase change temperature of the solution is the boiling point or the azeotropic point of the solution. For a non-azeotropic solution, the boiling point of the solution is the boiling point of the solution component with the highest mass percentage. That is, the phase change temperature of the first solution is the boiling point or the azeotropic point of the solution. When the first solution is a non-azeotropic solution, the boiling point of the first solution is the boiling point of the solution component with the highest mass percentage. The phase change temperature of the second solution is the boiling point or the azeotropic point of the solution. When the second solution is a non-azeotropic solution, the boiling point of the second solution is the boiling point of the solution component with the highest mass percentage.

[0101] It should be noted that the boiling point or the azeotropic point is not the only corresponding parameter of the violent vaporization of the liquid. In some solutions, the vaporization phase transition temperature is the temperature of the violent vaporization, but it is different from the boiling point or the azeotropic point. Therefore, the boiling point or the azeotropic point is used only to reduce the complexity of the technology. In a non-azeotropic solution system, when the solution is completely vaporized, the solution component with the highest mass percentage has the greatest impact on the generation of the aerosol. Therefore, it is reasonable to use the boiling point of the solution component with the highest mass percentage as the technical boiling point. It should be understood that the solution component with the highest mass percentage should have a relatively obvious difference in content from other solution components. If the content difference is not obvious, for example, the content of the solution component with the highest mass percentage is close to that of the second highest solution component, the effect of aerosol particle size control will not be obvious.

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

[0103] In some embodiments, the second solution contains a flavor component.

[0104] In some embodiments, the phase transition temperature B1 of the first solution is less than the phase transition temperature B2 of the second solution.

[0105] In some embodiments, the heating atomization temperature T1 of the first atomizer is different from the heating atomization temperature T2 of the second atomizer.

[0106] In some embodiments, the heating atomization temperature T1 of the first atomizer is greater than the heating atomization temperature T2 of the second atomizer.

[0107] In some embodiments, the phase transition temperature B1 of the first solution is less than the phase transition temperature B2 of the second solution, and the heating atomization temperature T1 of the first atomizer is greater than the heating atomization temperature T2 of the second atomizer. For the first solution, a relatively lower phase transition temperature is adopted, and a higher heating atomization temperature is configured, which helps to obtain a first aerosol with a relatively smaller particle size. For the second solution, a relatively higher phase transition temperature is adopted, and a lower heating atomization temperature is configured, which helps to obtain a second aerosol with a relatively larger particle size.

[0108] In some embodiments, the main solvent component of the first solution is propylene glycol (PG). Since the boiling point of propylene glycol is 188°C, the boiling point of the first solution is mainly affected by the boiling point of the solvent component propylene glycol, thereby helping to configure the first solution to have a relatively lower phase transition temperature, so as to help obtain a first aerosol with a relatively smaller particle size. The main solvent component is the solvent component with the highest mass percentage.

[0109] The solute of the first solution is a nicotine salt. For example, nicotine citrate, nicotine benzoate, nicotine malate, nicotine tartrate, etc.

[0110] In some embodiments, the main solvent component of the second solvent system is glycerol (VG). The boiling point of glycerol is about 290°C. The boiling point of the second solution is mainly affected by the boiling point of the solvent component glycerol, thereby helping to configure the second solution to have a relatively high phase transition temperature, to help obtain a relatively large particle size of the second aerosol.

[0111] The solute of the second solution can be various flavors. For example, lemon flavor, blueberry flavor, tobacco flavor, mint flavor, etc. Various flavors as flavor components.

[0112] In some embodiments, based on the boiling point of propylene glycol about 188°C, the boiling point of glycerol about 290°C, under heating conditions of 260°C, the first solution and the second solution are atomized respectively, according to (T1-B1)-(T2-B2) calculation, (260°C-188°C)-(260°C-290°C)=102°C>0°C, at this time the particle size of the first aerosol produced by the first solution is obviously smaller than the particle size of the second aerosol produced by the second solution. Under the same system, the heating and atomization temperature of the first solution is increased, for example, it can be 270°C, and the heating and atomization temperature of the second solution is reduced, for example, it can be 250°C, at this time the calculation formula becomes (270°C-188°C)-(250°C-290°C)=122°C>0°C, at this time the difference between the particle size of the first aerosol produced by the first solution and the particle size of the second aerosol produced by the second solution will be greater. The above example is for the purpose of explaining the concept of the present application, because in general the heating temperature should be higher than the vaporization phase transition temperature of the solution.

[0113] In some embodiments, the solvent component of the first solvent system further includes glycerol, and the proportion of propylene glycol in the solvent component is greater than 70wt%; and / or, the solvent component of the second solvent system further includes propylene glycol, and the proportion of glycerol in the solvent component is greater than 70wt%.

[0114] In some embodiments, propylene glycol and water are used as solvents in the first solution to form an azeotropic solvent system, and the azeotropic point is also obviously lower than the boiling point of the second solution using glycerol as the solvent, thereby achieving the effect of the first solution having a relatively low boiling point.

[0115] In the second solution, glycerol is mainly used as the main solvent component, and a small amount of propylene glycol can be added. Glycerol is the main solvent component, and the proportion of glycerol in the solvent component is greater than 70wt%. More preferably, glycerol is the main solvent component, and the proportion of glycerol in the solvent component is greater than 80wt%. To further improve the particle size control effect of the generated aerosol, and to improve the significance of the particle size difference between the aerosols obtained by the first atomizer and the second atomizer.

[0116] Assuming the atomizer environment temperature is constant, the heating atomization temperature is constant, for example, in the same aerosol generating device with the same heating atomization temperature, the same 260℃ is used to heat the solution system (referred to as solution), in the system with propylene glycol as the main solvent component, the gas is generated after the gas is reduced from 260℃ to its condensation point, and the system with glycerol as the main solvent component generates gas mist immediately after vaporization. Glycerol gas mist is generated faster, so the particle size increases continuously, and the visual effect of glycerol smoke is good. Propylene glycol condenses slowly, so the particle size of the first aerosol increases slowly, and the particle size of the first aerosol at the inlet can be smaller. Therefore, by using solution systems with different vaporization phase change temperatures, aerosol particle sizes can be different. In a double-atomizer system, assuming the heating temperature is the same, the aerosol particle size produced by the solution system with a low vaporization phase change temperature (e.g., low boiling point or low azeotropic point) is smaller, and the aerosol particle size produced by the solution system with a high vaporization phase change temperature (e.g., high boiling point or high azeotropic point) is larger.

[0117] Of course, the above-mentioned solution system is not limited to the propylene glycol / glycerol (PG / VG) system, as long as the vaporization phase change temperature (e.g., boiling point or azeotropic point) of the two solution systems can be distinguished and have a significant difference. It should be noted that in the mixed solution, if the multiple substances in the solution system cannot be azeotropic, because the solvent component with a significantly higher percentage is the main body of the atomization effect, the vaporization phase change temperature of the solvent component with a significantly higher percentage is defined as the vaporization phase change temperature of the solution system, which can ensure that the vaporization phase change temperature of the obtained solution system is more accurate.

[0118] The present application also provides another aerosol generating solution system for use with the device, and the aerosol generating device has at least two atomizers, the first atomizer is used to atomize the first solution, and the second atomizer is used to atomize the second solution. The phase change temperature of the first solution is less than that of the second solution.

[0119] The phase change temperature of the solution is the temperature at which the solution is heated to undergo phase change, specifically the temperature at which the solution is heated to undergo vaporization phase change; although most liquids can also vaporize at room temperature, the vaporization phase change temperature generally refers to the critical point of the temperature at which the liquid undergoes violent vaporization.

[0120] The above device focuses on the influence of the phase transition temperature of the solution on the particle size control, and is therefore simpler, i.e. the first solution can be more easily heated and atomized, and under the limitation of the maximum heating and atomization temperature, the temperature of the small droplets after atomization is not easily reduced to the condensation temperature, the particle size growth rate of the aerosol is reduced, and a relatively small particle size aerosol is obtained. And under the limitation of the maximum heating and atomization temperature, especially when the heating and atomization temperatures of the two atomizers are the same, the temperature of the small droplets after atomization of the second solution is more easily reduced to the condensation temperature, which helps to increase the particle size growth rate of the aerosol, so as to obtain a relatively large particle size aerosol. Thus, the purpose of generating large and small particle size aerosols respectively is achieved, and the accuracy of the particle size control of the aerosol is improved.

[0121] In some embodiments, the respective vaporization phase transition temperature is typically the boiling point, so the phase transition temperature of the solution is the boiling point or the azeotropic point of the solution. For a non-azeotropic solution, the boiling point of the solution is the boiling point of the solution component with the highest mass percentage.

[0122] 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.

[0123] Further, 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.

[0124] Further, 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.

[0125] In some embodiments, the first solution contains a nicotine component.

[0126] In some embodiments, the second solution contains a flavor component.

[0127] In some embodiments, the component with the maximum mass percentage in the first solution is propylene glycol, and in some embodiments, the component with the maximum mass percentage in the second solution is glycerol. Since the boiling points of propylene glycol and glycerol are different, by using different solution systems with different boiling points, the particle size of the aerosol can be made different. In a double-atomizer system, assuming the same heating temperature, the lower the boiling point or azeotropic point of the solution system, the smaller the particle size of the first aerosol, and the higher the boiling point or azeotropic point of the solution system, the larger the particle size of the second aerosol.

[0128] Based on the above principles, the first solution uses a solution system with a low vaporization phase transition temperature, and the first solution is added with a nicotine component, which helps to generate a first aerosol with small particle size to carry nicotine into the lungs for absorption. Similarly, the second solution uses a solution system with a high vaporization phase transition temperature, and the second solution is added with a flavor component, which generates a second aerosol with large particle size to carry the flavor components to deposit in the oral cavity, which helps to perceive the flavor.

[0129] The present application also provides another aerosol-generating solution system for use with the device, and the aerosol-generating device has at least two atomizers, a first atomizer releases a first aerosol, the first aerosol is based on a first solvent system, and a second atomizer releases a second aerosol, the second aerosol is based on a second solvent system, and the phase transition temperature of the first solvent system is less than the phase transition temperature of the second solvent system.

[0130] Under the limitation of the limited maximum heating atomization temperature, the first solvent system can be more easily heated and atomized, which helps the first atomizer to atomize to obtain a first aerosol with relatively small particle size, and the temperature of the aerosol obtained by the second atomizer can be more easily reduced to the condensation temperature, which helps to increase the particle size growth rate of the aerosol to obtain a second aerosol with relatively large particle size. Thus, precise control of the particle size of the aerosol can be achieved, and separate control of the second aerosol with large particle size and the first aerosol with small particle size can be achieved.

[0131] Since the phase transition of the liquid after heating is vaporization, the corresponding vaporization phase transition temperature is typically the boiling point. Therefore, in some embodiments, the phase transition temperature of the solvent system is the boiling point or the azeotropic point of the solvent system. When the solvent system based on the aerosol is not azeotropic, the boiling point of the solvent system is the boiling point of the component with the highest mass percentage.

[0132] 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.

[0133] Further, 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.

[0134] Further, 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.

[0135] In some embodiments, the first aerosol contains a nicotine component.

[0136] In some embodiments, the second aerosol contains a flavor component.

[0137] In some embodiments, the main component of the first solvent system is propylene glycol; in some embodiments, the main component of the second solvent system is glycerol.

[0138] It should be understood that the term "and / or" in this document is merely used to describe an associated relationship between associated objects, which means that there can be three relationships, for example, A and / or B can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " in this document represents an "or" relationship between the associated objects before and after it.

[0139] "Multiple" appearing in the embodiments of the present application means two or more.

[0140] The first, second, and the like appearing in the embodiments of the present application are only used for description and distinction of the description objects, and there is no order difference, nor does it represent a special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0141] Although the present application is disclosed as above, the present application is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and therefore the protection scope of the present application should be limited by the scope defined in the claims. Although there can be extreme examples inconsistent with the concept of the present application, similar examples belong to the situation that can be obviously excluded by the person skilled in the art, and are not within the protection scope of the present application.

Claims

1. An aerosol generating device having at least two atomizers, wherein a first atomizer generates a first aerosol and a second atomizer generates a second aerosol, wherein the particle size of the first aerosol is smaller than the particle size of the second aerosol, the first aerosol is provided through a first transmission channel, and the second aerosol is provided through a second transmission channel, characterized in that: The outlet end of the second transmission channel has a bundle opening structure, and along the flow direction of the second aerosol in the second transmission channel, the bundle opening structure has a contraction portion and an expansion portion.

2. The aerosol generating device according to claim 1, wherein: The second transmission channel surrounds at least a portion of the first transmission channel.

3. The aerosol generating device according to claim 2, wherein: The first transmission channel is located at the center of the second transmission channel.

4. The aerosol generating device according to claim 3, wherein: The expansion portion extends in a direction away from the first transmission channel to guide the second aerosol to diffuse in a direction away from the first transmission channel.

5. The aerosol generating device according to claim 4, wherein: A surface of the outlet end of the first transmission channel facing the expansion portion has a guide portion, and the guide portion is used to guide the second aerosol to diffuse in a direction away from the first transmission channel.

6. The aerosol generating device according to claim 3, wherein: An outlet end of the first transmission channel exceeds a connecting area between the contraction portion and the expansion portion.

7. The aerosol generating device according to claim 6, wherein: The first transmission channel has a fixed section and an extension section, and the extension section is telescopically connected to the fixed section. The extension section is configured to move in a direction away from the fixed section when subjected to suction to extend the transmission channel of the first aerosol, and return to an initial state when the suction disappears. In the initial state, the extension section overlaps with the fixed section.

8. The aerosol generating device according to claim 7, wherein: A locking structure is provided between the fixed section and the extension section, and the locking structure is used to limit the maximum moving distance of the extension section relative to the fixed section.

9. The aerosol generating device according to claim 7, wherein: It also includes a rebound portion, which is used to drive the extension section to return to the initial state when the suction force disappears.

10. The aerosol generating device according to any one of claims 1 to 9, wherein: The first transmission channel is in a straight tube shape.

11. The aerosol generating device according to claim 1, wherein: An outlet end of the first transmission channel is lower than an outlet end of the second transmission channel.

12. The aerosol generating device according to claim 1, wherein: The first transmission channel is shorter than the second transmission channel.

13. An aerosol generating device having at least two atomizers, wherein a first atomizer generates a first aerosol and a second atomizer generates a second aerosol, wherein the particle size of the first aerosol is smaller than the particle size of the second aerosol, the first aerosol is provided through a first transmission channel, and the second aerosol is provided through a second transmission channel, characterized in that: The first transmission channel is in a straight tube shape.

14. The aerosol generating device according to claim 13, wherein: The first transmission channel is shorter than the second transmission channel, and / or the first transmission channel is located in the center, and the second transmission channel surrounds at least a portion of the first transmission channel.

15. An aerosol generating device having at least two atomizers, wherein a first atomizer generates a first aerosol and a second atomizer generates a second aerosol, wherein the particle size of the first aerosol is smaller than the particle size of the second aerosol, the first aerosol is provided through a first transmission channel, and the second aerosol is provided through a second transmission channel, characterized in that: The first transmission channel is shorter than the second transmission channel.

16. The aerosol generating device according to claim 15, wherein: The first transmission channel is located in the center, and the second transmission channel surrounds at least a portion of the first transmission channel.

17. An aerosol generating device having at least two atomizers, wherein a first atomizer generates a first aerosol and a second atomizer generates a second aerosol, wherein the particle size of the first aerosol is smaller than the particle size of the second aerosol, the first aerosol is provided through a first transmission channel, and the second aerosol is provided through a second transmission channel, characterized in that: The first transmission channel is located in the center, and the second transmission channel surrounds at least a portion of the first transmission channel.

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