Aerosol generating device

Abstract

The invention belongs to the technical field of electronic atomization, and provides an aerosol generating device which comprises an atomization assembly, an aerosol generating assembly and a control assembly. The sealing assembly is arranged at the bottom of the atomization assembly in a sealed mode, an air inlet cavity is formed in the sealing assembly, the sealing assembly is provided with an air outlet hole communicating with the airflow channel and an air inlet hole allowing external airflow to enter, and the air outlet hole and the air inlet hole both communicate with the air inlet cavity; the airflow sensing assembly is arranged on the sealing assembly, and a sensing film of the airflow sensing assembly communicates with the air inlet cavity; a Tesla valve channel is arranged in the air inlet cavity, and the direction from the sensing film of the airflow sensing assembly to the airflow channel in the Tesla valve channel is the forward direction. According to the aerosol generating device provided by the invention, the characteristic that the forward flow resistance and the reverse flow resistance of the Tesla valve channel are different is utilized, the forward flow of air flow is quicker during suction, the induction triggering effect of the air flow induction assembly is improved, the resistance is larger during the reverse flow of the air flow, and condensate cannot flow into the air flow induction assembly, so that the sensitivity of the aerosol generating device can be ensured.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic atomization equipment, and more specifically, to an aerosol generating device. Background Art

[0002] An aerosol generator is a device that can heat an aerosol matrix to form an aerosol. When the aerosol generator is working, a high temperature and high humidity environment is formed inside, and the problem of aerosol condensation and reflux often occurs. The condensate formed by the reflux will block the airflow sensing component and affect the triggering effect. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide an aerosol generating device that can enhance the triggering effect of an airflow sensing component.

[0004] To achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide an aerosol generating device, comprising:

[0005] An atomizing assembly, wherein the atomizing assembly is provided with an air flow channel;

[0006] A sealing component, which is sealed and arranged at the bottom of the atomizing component, wherein an air inlet cavity is arranged in the sealing component, wherein the sealing component is provided with an air outlet hole communicating with the air flow channel and an air inlet hole for allowing external air flow to enter, wherein both the air outlet hole and the air inlet hole are communicated with the air inlet cavity;

[0007] An airflow sensing component is disposed on the sealing component, and a sensing film of the airflow sensing component is in communication with the air inlet cavity;

[0008] Wherein, a Tesla valve channel is provided in the air inlet cavity, and the direction from the sensing film of the airflow sensing component to the airflow channel in the Tesla valve channel is a positive direction.

[0009] In one embodiment, the sealing assembly includes a first sealing member and a second sealing member, wherein the first sealing member is sealingly arranged at the bottom of the atomization assembly, the second sealing member is arranged at the bottom of the first sealing member and is in sealing contact with the first sealing member, and the first sealing member and the second sealing member form the air inlet cavity; the top surface of the first sealing member is provided with the air outlet hole, and the bottom surface of the second sealing member is provided with the air inlet hole.

[0010] In one embodiment, a bump is convexly provided on the bottom surface of the first sealing member, and the bump is concavely formed to form a Tesla valve slot structure, and the Tesla valve slot structure constitutes the Tesla valve channel.

[0011] In one embodiment, a liquid absorbing member is provided in the air inlet cavity, and the liquid absorbing member covers the Tesla valve channel to absorb condensed liquid.

[0012] In one embodiment, a boss is provided on the top surface of the second sealing member, the airflow sensing component is installed at a position corresponding to the bottom of the boss, a connecting hole is provided on the top surface of the boss, the sensing membrane of the airflow sensing component is connected with the air inlet cavity through the connecting hole, and the boss is provided with an inclined guide groove to drain the condensate to the liquid absorbing member.

[0013] In one embodiment, the bottom of the guide groove is an arc-shaped slope.

[0014] In one embodiment, the Tesla valve channel includes a main channel and at least three branch channels connected to the main channel, the main channel has a first end and a second end relative to each other, the first end is arranged adjacent to the airflow sensing component, and at least three branch channels are respectively arranged on opposite sides of the main channel along the direction from the first end to the second end of the main channel.

[0015] In one embodiment, a buffer zone is provided at one side of the entrance of the main flow channel, and a side of the buffer zone close to the main flow channel has an opening communicating with the main flow channel.

[0016] In one embodiment, the convergence angle at the entrance of the main channel is smaller than the convergence angle at the entrance of the branch channel, and the convergence angle at the entrance of the main channel ranges from 11 degrees to 13 degrees.

[0017] In one embodiment, the convergence angle at the entrance of the main channel is 13 degrees.

[0018] In one embodiment, the convergence angle at the inlet of the branch channel is 15 degrees.

[0019] In one embodiment, the divergence angle at the outlet of the main channel is 15 degrees.

[0020] In one embodiment, the extension path of the main channel between the first end and the second end is a continuously bent broken line, and the branch channel is an arc-shaped channel with two ends connected to the main channel.

[0021] In one embodiment, the layout angle of the branch channel is equal to the layout angle of the main channel, and the layout angle of the main channel is 30 degrees.

[0022] In one embodiment, the width of the branch channel is equal to the width of the main channel, and the width of the main channel is 0.5 mm.

[0023] In one embodiment, the length of the main channel is 6.5 mm, and the length of the branch channel is 4 mm.

[0024] In one embodiment, the bending radius of the branch channel is 0.75 mm.

[0025] The beneficial effect of the aerosol generating device provided by the present application is that compared with the prior art, the aerosol generating device of the present application is sealed with a sealing component at the bottom of the atomizing component, and a Tesla valve channel is provided in the air inlet cavity of the sealing component, and the sensing membrane of the airflow sensing component is connected to the air inlet cavity. In this way, the different forward and reverse flow resistances of the Tesla valve channel can be utilized. When inhaling, the airflow flows faster in the forward direction, which improves the sensing triggering effect of the airflow sensing component. When the airflow flows in the reverse direction, the resistance is larger, and condensate cannot flow into the airflow sensing component, thereby ensuring its sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A three-dimensional diagram of an aerosol generating device provided in an embodiment of the present application;

[0028] Figure 2 for Figure 1 a bottom view of the aerosol generating device shown;

[0029] Figure 3 For along Figure 2 Sectional view along line AA;

[0030] Figure 4 for Figure 1 An exploded view of the aerosol generating device shown;

[0031] Figure 5 for Figure 4 A perspective view of a first sealing member in the aerosol generating device;

[0032] Figure 6 for Figure 5 a bottom view of the first seal shown;

[0033] Figure 7 for Figure 6 A top view of a protrusion in the first seal shown;

[0034] Figure 8 for Figure 6 A top view of a protrusion in the first seal shown;

[0035] Fig. 9 for Figure 4 A schematic diagram of the structure of a liquid absorbing component in the aerosol generating device shown;

[0036] Fig.10 for Figure 4 A schematic structural diagram of a second sealing member in the aerosol generating device shown;

[0037] Fig.11 Schematic diagram of the partial assembly structure of the second seal Figure 1 ;

[0038] Fig.12 Schematic diagram of the partial assembly structure of the second seal Figure 2 ;

[0039] Fig.13 for Figure 1 A partial exploded view of the aerosol generating device shown;

[0040] Fig.14 Schematic diagram of the partial assembly structure of the second seal Figure 3 ;

[0041] Fig.15 For along Fig.14 Sectional view along the midline BB;

[0042] Fig.16 A schematic structural diagram of a second sealing member provided in another embodiment of the present application.

[0043] Among them, the reference numerals in the figure are:

[0044] 10-shell; 20-atomizing assembly; 30-sealing assembly; 40-airflow sensing assembly; 50-liquid suction component; 60-gas regulating component; 11-main shell; 12-side shell; 13-bracket; 14-power supply component; 15-circuit board; 150-second electrode; 16-nozzle; 17-sealing plug; 110-air inlet; 21-airflow channel; 22-flow guide tube; 23-liquid guide component; 24-liquid storage tank; 25-liquid storage cotton; 31-first sealing component; 32-second sealing component; 33-air inlet cavity; 34-Tesla valve channel; 310-air outlet Hole; 311-bump; 312-Tesla valve slot structure; 313-first thin-walled structure; 314-first accommodating chamber; 320-air inlet; 321-second thin-walled structure; 322-second accommodating chamber; 323-boss; 324-connecting hole; 325-extension; 326-guide groove; 327-installation chamber; 341-first end; 342-second end; 343-main channel; 344-branch channel; 345-buffer zone; 346-blocking block; 51-covering area; 61-air regulating plate; 610-air regulating hole; 62-dial knob. DETAILED DESCRIPTION

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0047] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] Please also read Figures 1 to 4 , the aerosol generating device provided in the embodiment of the present application is now described. The aerosol generating device comprises a housing 10, and an atomizing assembly 20, a sealing assembly 30, and an airflow sensing assembly 40 accommodated in the housing 10. An air inlet 110 is provided on the bottom surface of the housing 10, and a suction nozzle 16 is provided on the top of the housing 10. The atomizing assembly 20 is provided with an airflow channel 21, and the airflow channel 21 is connected to the space outside the aerosol generating device through the suction nozzle 16.

[0050] The sealing component 30 is sealed and installed at the bottom of the atomizing component 20, which can effectively prevent leakage. An air inlet cavity 33 is arranged in the sealing component 30, and an air outlet hole 310 and an air inlet hole 320 are opened in the sealing component 30. The air outlet hole 310 and the air inlet hole 320 are both connected to the air inlet cavity 33, and the air outlet hole 310 is connected to the air flow channel 21. The air inlet hole 320 is used to allow external air flow to enter the air inlet cavity 33. The air flow sensing component 40 is arranged on the sealing component 30, and the sensing film of the air flow sensing component 40 is connected to the air inlet cavity 33, so that the air pressure change in the air inlet cavity 33 can be sensed.

[0051] See also Figures 3 to 6 A Tesla valve channel 34 is provided in the air inlet cavity 33. In the Tesla valve channel 34, the direction from the sensing membrane of the airflow sensing component 40 to the airflow channel 21 is the forward direction, and the direction from the airflow channel 21 to the sensing membrane of the airflow sensing component 40 is the reverse direction. By utilizing the characteristics of the Tesla valve channel 34 that the forward flow is easy and the reverse flow resistance is large, the triggering sensitivity of the airflow sensing component 40 can be improved, the backflow of the aerosol matrix after condensation can be blocked, and the blockage problem of the airflow sensing component 40 caused by the backflow of the condensate can be avoided.

[0052] Compared with the prior art, the aerosol generating device provided in the present application has a sealing component 30 sealed at the bottom of the atomizing component 20, and a Tesla valve channel 34 is provided in the air inlet cavity 33 of the sealing component 30, and the sensing membrane of the airflow sensing component 40 is connected to the air inlet cavity 33. In this way, the different forward and reverse flow resistances of the Tesla valve channel 34 can be utilized. When inhaling, the airflow flows faster in the forward direction, which improves the sensing triggering effect of the airflow sensing component 40. When the airflow flows in the reverse direction, the resistance is larger, and condensate cannot flow into the airflow sensing component 40, thereby ensuring its sensitivity.

[0053] Specifically, the sealing assembly 30 includes a first sealing member 31 and a second sealing member 32. The first sealing member 31 is sealed and installed at the bottom end of the atomizing assembly 20. The first sealing member 31 is provided with an air outlet hole 310 that runs through the top and bottom, and a Tesla valve channel 34 is provided on the bottom surface of the first sealing member 31. The second sealing member 32 is provided at the bottom of the first sealing member 31, and the second sealing member 32 is sealed and matched with the first sealing member 31. An air inlet cavity 33 is formed between the first sealing member 31 and the second sealing member 32. The air flow channel 21 is connected to the air inlet cavity 33 through the air outlet hole 310, and the Tesla valve channel 34 is located in the air inlet cavity 33, so that the air flow channel 21 is connected to the Tesla valve channel 34. The second sealing member 32 is provided with an air inlet hole 320 that runs through the top and bottom, and the external air flow is connected to the air inlet cavity 33 through the air inlet hole 320, so that the external air flow flows from the air inlet hole 320 into the air inlet cavity 33 and flows to the air flow channel 21, and finally flows to the outside of the aerosol generating device through the suction nozzle 16.

[0054] That is to say, the sensing membrane of the airflow sensing component 40 on the second sealing component 32 is connected to the air inlet cavity 33, and can sense the changes in air pressure in the air inlet cavity 33. Since a Tesla valve channel 34 is provided on the bottom surface of the first sealing component 31, the Tesla valve has different resistances to fluid flow in the forward and reverse directions. During suction, that is, when the airflow flows forward, it is faster, which improves the sensing triggering effect of the airflow sensing component 40. When the airflow flows in the reverse direction, the resistance is greater, and condensate cannot flow into the airflow sensing component 40, thereby ensuring its sensitivity. At the same time, the air pressure in the liquid storage tank 24 can be balanced to achieve smooth suction and avoid leakage and blockage.

[0055] See also Figure 3 , Figure 4 , Fig. 9 The aerosol generating device further comprises a liquid absorbing member 50. The liquid absorbing member 50 is disposed in the air inlet cavity 33, covers the entire Tesla valve channel 34, and is used to absorb condensed liquid formed by the aerosol generating matrix that refluxes into the Tesla valve channel 34.

[0056] See also Figures 4 to 6 The bottom surface of the first sealing member 31 is provided with a first thin-walled structure 313, and the first thin-walled structure 313 forms a substantially annular first accommodating cavity 314. The bottom surface of the first sealing member 31 is provided with a convex block 311, and the convex block 311 is located in the first accommodating cavity 314, and the bottom surface of the convex block 311 abuts against the top surface of the liquid absorbing member 50. The convex block 311 is recessed to form a Tesla valve slot structure 312, and the Tesla valve slot structure 312 is structured to form a Tesla valve channel 34.

[0057] See also Figure 4 , Figure 5 , Fig. 9 , the contour shape of one side of the liquid absorbing member 50 matches the contour shape of the periphery of the cross section of the protrusion 311, that is, Fig. 9 The area on the right side of the middle dotted line is the covering area 51, and the covering area 51 can completely cover the protrusion 311. By providing the absorbent member 50 at the bottom of the Tesla valve channel 34, the condensed liquid can be quickly adsorbed to prevent the aerosol generating matrix from entering the air inlet 320 of the air flow sensing component 40 and causing blockage. In other words, the absorbent member 50 is laid at the bottom of the first sealing member 31, and the absorbent member 50 covers the entire area of ​​the Tesla valve channel 34. The absorbent member 50 can absorb the condensed liquid in the refluxed aerosol generating matrix to prevent the aerosol generating matrix from accumulating in the Tesla valve channel 34, thereby solving the problem of blockage of the air flow sensing component 40 caused by the condensation of the aerosol generating matrix, and then ensuring the air flow sensing sensitivity of the air flow sensing component 40. The absorbent member 50 can be, but is not limited to, absorbent cotton.

[0058] See also Figure 1 , Figure 3 , Figure 4The housing 10 includes a main housing 11 and a side housing 12 connected to each other. A nozzle 16 is provided on the top of the main housing 11. One side of the main housing 11 is open. The side housing 12 is connected to the opening on one side of the main housing 11. The two are assembled together by buckling. The atomization assembly 20 includes a flow guide tube 22, a heating element, a liquid guide element 23 and a liquid storage tank 24. A liquid storage tank 24 is provided in the main housing 11. The liquid storage tank 24 is provided with a liquid storage cotton 25. The liquid storage cotton 25 is soaked with a liquid aerosol generating matrix. The flow guide tube 22 is structured to form a first airway, and the nozzle 16 has a second airway connecting the first airway with the outside of the aerosol generating device. The guide tube 22 passes through the liquid storage cotton 25, and the bottom end of the guide tube 22 is inserted into the air outlet 310 of the first sealing member 31, and is sealed with the air outlet 310. The heating element is arranged on the guide tube 22, and the heating element is provided with a first electrode. The circuit board 15 is provided with a second electrode 150, and the second electrode 150 passes through the second sealing member 32 and extends into the air inlet cavity 33. The first electrode passes through the first sealing member 31 and contacts the second electrode 150. One end of the liquid guide member 23 is connected to the heating element, and the other end of the liquid guide member 23 extends into the liquid storage cotton 25 to conduct the aerosol generation matrix of the liquid storage cotton 25 to the heating element. The aerosol generation matrix is ​​heated by the heating element to be atomized and form an aerosol. The aerosol flows to the suction nozzle 16 through the air flow channel 21, and finally flows out of the aerosol generating device. A sealing plug 17 is provided at the air outlet of the suction nozzle 16, and the sealing plug 17 can be pulled out when in use.

[0059] The aerosol generating device further includes a bracket 13 and a power supply 14 housed in the housing 10. The bracket 13 is L-shaped as a whole, and the bracket 13 is assembled with the side housing 12 by buckling. The bracket 13 is surrounded by a vertical and horizontal chamber, and most of the power supply 14 is housed in the vertical chamber of the bracket 13, and a part of the circuit board 15 is housed in the vertical chamber of the bracket 13, and the other part is housed in the horizontal chamber. The airflow sensing component 40 is fixed to the top surface of the horizontally arranged circuit board 15.

[0060] The outer peripheral wall of the first sealing member 31 is provided with sealing ribs, which are in sealing contact with the inner wall surface of the liquid storage bin 24, so that the first sealing member 31 is sealed at the open bottom of the liquid storage bin 24. The Tesla valve channel 34 and the first sealing member 31 are formed in an integrated manner, which simplifies the manufacturing process, has a simple structure, low manufacturing cost, and high space utilization. The first sealing member 31 and / or the second sealing member 32 can be made of silicone or other thermoplastic elastic materials.

[0061] See also Figure 3 , Figure 5 , Fig.10A second thin-walled structure 321 is convexly provided on the top surface of the second sealing member 32, and the second thin-walled structure 321 forms a second accommodating cavity 322. The first thin-walled structure 313 is sleeved on the outer peripheral side of the second thin-walled structure 321 and is in sealing contact with the second thin-walled structure 321, so that an air intake cavity 33 is formed between the first sealing member 31 and the second sealing member 32.

[0062] See also Figures 10 to 13 The top surface of the second sealing member 32 is provided with a boss 323, which is located in the second accommodating cavity 322. Specifically, the boss 323 can be located at a corner of the second accommodating cavity 322. The boss 323 is connected to two adjacent side walls of the second thin-walled structure 321. The convex block 311 on the bottom surface of the first sealing member 31 is arranged adjacent to the boss 323, that is, the convex block 311 extends into an area adjacent to a corner of the boss 323. The airflow sensing component 40 is installed at a position corresponding to the bottom of the boss 323. The top surface of the boss 323 is provided with a connecting hole 324, and the sensing film of the airflow sensing component 40 is connected to the air inlet cavity 33 through the connecting hole 324.

[0063] See also Fig.16 In one embodiment, the boss 323 is provided with an inclined guide groove 326, one end of the guide groove 326 is connected to the connecting hole 324, and the other end is connected to the entrance of the Tesla valve channel 34, so that the condensate can be drained to the liquid absorbing member 50. In one embodiment, the bottom of the guide groove 326 on the boss 323 adopts an arc-shaped slope, which can further improve the drainage effect.

[0064] See also Figure 3 , Figures 13 to 15 The bottom surface of the second sealing member 32 is provided with a mounting cavity 327 adapted to the airflow sensing assembly 40 at a position opposite to the connecting hole 324, and the connecting hole 324 and the mounting cavity 327 are arranged coaxially. The bottom surface of the second sealing member 32 is convexly formed with a hollow extension portion 325, and the peripheral wall of the extension portion 325 is concavely formed with a card slot, and the circuit board 15 is provided with a card hole for the extension portion 325 to pass through. After passing through the card hole, the extension portion 325 is card-engaged with the circuit board 15 through the card slot, so that the second sealing member 32 and the circuit board 15 are installed and fixed together.

[0065] An air regulating member 60 is provided at the air inlet 110 at the bottom of the shell 10, and the suction resistance can be adjusted through the air regulating member 60. The bottom surface of the extension portion 325 of the second sealing member 32 is in sealing contact with the top surface of the air regulating member 60, which can eliminate the risk of air leakage and make the suction resistance more stable. The air regulating member 60 includes an air regulating plate 61 and a dial knob 62 connected to the bottom surface of the air regulating plate 61. At least two air regulating holes 610 are provided on the air regulating plate 61. The air inlet 110 is connected to the air inlet hole 320 of the second sealing member 32 through the air regulating hole 610, and then connected to the air inlet cavity 33 of the sealing assembly 30. The number of air regulating holes 610 can be increased according to actual needs. The air regulating member 60 can be slidably arranged at the bottom of the shell 10. The air regulating member 60 is slid by turning the dial knob 62 at the bottom of the air regulating member 60 to slide the air regulating member 60, change the number of air regulating holes 610 connected, and then change the suction resistance.

[0066] See also Figures 6 to 8 The Tesla valve channel 34 includes a main channel 343 and a plurality of branch channels 344, and the branch channels 344 are connected to the main channel 343. In one embodiment, the number of branch channels 344 is set to at least three, and the specific number can be adjusted accordingly according to the actual size of the aerosol generating device. The main channel 343 has a first end 341 and a second end 342 opposite to each other, and the first end 341 is arranged adjacent to the airflow sensing component 40. The direction of the Tesla valve channel 34 flowing from the first end 341 to the second end 342 is the positive direction. At least three branch channels 344 are respectively arranged on opposite sides of the main channel 343 along the direction from the first end 341 to the second end 342 of the main channel 343.

[0067] A buffer zone 345 is provided on one side near the entrance of the main channel 343. An opening is provided on one side of the buffer zone 345, which is connected to the main channel 343 through the opening. The opening is provided on the side of the buffer zone 345 close to the main channel 343. The buffer zone 345 is a groove body with a single opening. By providing a buffer zone 345 with a single opening near the entrance of the main channel 343, the airflow can further absorb the aerosol when it flows in the reverse direction, and dissipate the energy of the aerosol flowing in the reverse direction, which can improve the overall blocking effect. In other words, the buffer zone 345 forms a buffer gas segment near the entrance of the Tesla valve channel 34, and the buffer gas segment with a single opening can absorb the remaining aerosol generating matrix flowing in the reverse direction.

[0068] See also Figure 7 The extension path of the main channel 343 between the first end 341 and the second end 342 is a continuously bent broken line, and the branch channel 344 is an arc-shaped channel connected to the main channel 343 at both ends. A baffle 346 is provided in the arc-shaped channel, so that the total path of the main channel 343 is shorter and the total path of the branch channel 344 is longer.

[0069] See also Figure 7 , Figure 8, the convergence angle γ at the entrance of the main channel 343 is set to be smaller than the convergence angle at the entrance of the branch channel 344. The range of the convergence angle γ at the entrance of the main channel 343 can be set to 11 degrees to 13 degrees, and the convergence angle can specifically be 11 degrees, 11.5 degrees, 12 degrees, 12.5 degrees, 13 degrees, etc. In one embodiment, the convergence angle γ at the entrance of the main channel 343 can be set to 13 degrees, which can accelerate the forward flow of the airflow. The convergence angle γ at the entrance of the main channel 343 is set to be smaller than the divergence angle Ω at the outlet, and the divergence angle Ω at the outlet of the main channel 343 can be set to 15 degrees, which can improve the diffusion path and energy loss of the aerosol flowing in the reverse direction.

[0070] See also Figure 4 , Figure 7 , Figure 8 , the convergence angle ω at the entrance of the branch channel 344 ranges from 14 degrees to 17 degrees, the end of the branch channel 344 is a straight non-diffusion structure, and the convergence angle can be 14 degrees, 14.5 degrees, 15 degrees, 15.5 degrees, 16 degrees, 16.5 degrees, 17 degrees, etc. In one embodiment, the convergence angle ω at the entrance of the branch channel 344 is set to 15 degrees, and the end of the branch channel 344 is a straight non-diffusion structure, so that turbulence is formed in the Tesla valve channel 34 to hinder the movement of the airflow, the energy of the aerosol generation matrix is ​​gradually lost, and the reverse flow is significantly hindered.

[0071] That is to say, when inhalation occurs, the airflow flows in a forward direction, and the airflow at the sensing membrane of the airflow sensing component 40 enters from the entrance of the main channel 343, and a convergence angle of 13 degrees is set at the entrance of the main channel 343, so that the forward airflow speed is accelerated. At the same time, by optimizing the geometry of the branch channel 344, it is possible to avoid the airflow entering the branch channel 344 when flowing forward to the greatest extent, thereby ensuring that the airflow sensing component 40 can be triggered sensitively and the inhalation process is smooth and unobstructed.

[0072] When the airflow flows in the reverse direction and the condensed aerosol-generating matrix enters the Tesla valve channel 34, due to the diversion of the branch channel 344 and the main channel 343, and the bending radius of the branch channel 344 is set to be smaller, and the end of the main channel 343 is set to a divergence angle Ω of 15 degrees, turbulence is formed and the airflow movement is hindered, the airflow energy is gradually lost, and the reverse airflow is subject to significant resistance. A buffer zone 345 is set at the entrance of the Tesla valve channel 34, and the buffer zone 345 can absorb the remaining reverse airflow and further dissipate the kinetic energy of the condensate flow.

[0073] See also Figures 6 to 8 , the layout angle of the main channel 343 and the layout angle of the branch channel 344 are set to be equal. The angle between the main channel 343 and the length direction of the protrusion 311 is set to be equal to the angle between the branch channel 344 and the length direction of the protrusion 311. The layout angle of the main channel 343 can be 30 degrees. Figure 8 As shown, the dotted line P is a straight line parallel to the length direction of the boss 323, the layout angle of the main channel 343 is the angle α between the extension direction of the main channel 343 and P, and the layout angle of the branch channel 344 is the angle β between the extension direction of the branch channel 344 and P.

[0074] See also Figure 7 , Figure 8 The width D1 of the main channel 343 in the Tesla valve channel 34 is set equal to the width D2 of the branch channel 344. The width D1 of the main channel 343 can be specifically set to 0.5 mm.

[0075] The length D3 of the main flow channel 343 is 6.5 mm, that is, the length position of the boss 323 on the bottom surface of the first sealing member 31 is 6.5 mm. The length D4 of the branch flow channel 344 is set to 4 mm.

[0076] The bending radius of the branch channel 344 is 0.75 mm, that is, the radius R of the arc-shaped channel of the branch channel 344 in the boss 323 is set to 0.75 mm.

[0077] In one embodiment, the number of the branch channels 344 of the Tesla valve channel 34 is three. The width of the main channel 343 of the Tesla valve channel 34 is set to 0.5 mm, the length of the main channel 343 is set to 6.5 mm, the length of the branch channel 344 is set to 4 mm, the bending radius of the branch channel 344 is set to 0.75 mm, the layout angle of the main channel 343 and the branch channel 344 is 30 degrees, the convergence angle at the entrance of the main channel 343 is 13 degrees, the divergence angle at the exit of the main channel 343 is 15 degrees, and the convergence angle at the entrance of the branch channel 344 is set to 15 degrees. Through the geometric optimization design of the main channel 343 and the branch channel 344 and the auxiliary effect of the liquid wicking part 50, the reverse flow of the aerosol generating matrix can be blocked to a large extent, while maintaining the patency of the forward flow; and compared with the traditional Tesla valve, the space occupied by the aerosol generating matrix is ​​greatly reduced, which can meet the requirements of miniaturization of the aerosol generating device.

[0078] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An aerosol generating device, characterized in that: include: An atomizing assembly (20), wherein the atomizing assembly (20) is provided with an air flow channel (21); A sealing component (30) is sealingly arranged at the bottom of the atomizing component (20), an air inlet cavity (33) is arranged in the sealing component (30), the sealing component (30) is provided with an air outlet hole (310) communicating with the air flow channel (21) and an air inlet hole (320) for allowing external air flow to enter, and the air outlet hole (310) and the air inlet hole (320) are both in communication with the air inlet cavity (33); An airflow sensing component (40) is disposed on the sealing component (30), and a sensing film of the airflow sensing component (40) is in communication with the air inlet cavity (33); Wherein, a Tesla valve channel (34) is provided in the air inlet cavity (33), and the direction in the Tesla valve channel (34) from the sensing film of the airflow sensing component (40) to the airflow channel (21) is a positive direction.

2. The aerosol generating device according to claim 1, characterized in that: The sealing component (30) comprises a first sealing member (31) and a second sealing member (32); the first sealing member (31) is sealingly arranged at the bottom of the atomizing component (20); the second sealing member (32) is arranged at the bottom of the first sealing member (31) and is in sealing contact with the first sealing member (31); the first sealing member (31) and the second sealing member (32) form the air inlet cavity (33); the top surface of the first sealing member (31) is provided with the air outlet hole (310), and the bottom surface of the second sealing member (32) is provided with the air inlet hole (320).

3. The aerosol generating device according to claim 2, characterized in that: A convex block (311) is convexly provided on the bottom surface of the first sealing member (31), and the convex block (311) is recessed to form a Tesla valve slot structure (312), and the Tesla valve slot structure (312) constitutes the Tesla valve channel (34).

4. The aerosol generating device according to claim 2, characterized in that: A liquid absorbing member (50) is provided in the air inlet cavity (33), and the liquid absorbing member (50) covers the Tesla valve channel (34) to absorb condensed liquid.

5. The aerosol generating device according to claim 4, characterized in that: The top surface of the second sealing member (32) is provided with a boss (323), the airflow sensing component (40) is installed at a position corresponding to the bottom of the boss (323), the top surface of the boss (323) is provided with a connecting hole (324), the sensing film of the airflow sensing component (40) is connected with the air inlet cavity (33) through the connecting hole (324), and the boss (323) is provided with an inclined guide groove (326) to guide the condensed liquid to the liquid absorbing member (50).

6. The aerosol generating device according to claim 5, characterized in that: The bottom of the guide groove (326) is an arc-shaped slope.

7. The aerosol generating device according to any one of claims 1 to 6, characterized in that: The Tesla valve channel (34) includes a main channel (343) and at least three branch channels (344) connected to the main channel (343), wherein the main channel (343) has a first end (341) and a second end (342) opposite to each other, wherein the first end (341) is arranged adjacent to the airflow sensing component (40), and the at least three branch channels (344) are arranged on opposite sides of the main channel (343) along a direction from the first end (341) of the main channel (343) to the second end (342).

8. The aerosol generating device according to claim 7, characterized in that: A buffer zone (345) is provided on one side of the entrance of the main channel (343), and a side of the buffer zone (345) close to the main channel (343) has an opening communicating with the main channel (343).

9. The aerosol generating device according to claim 7, characterized in that: The convergence angle at the entrance of the main channel (343) is smaller than the convergence angle at the entrance of the branch channel (344), and the convergence angle at the entrance of the main channel (343) ranges from 11 degrees to 13 degrees.

10. The aerosol generating device according to claim 9, characterized in that: The convergence angle at the entrance of the main channel (343) is 13 degrees.

11. The aerosol generating device according to claim 9, characterized in that: The convergence angle at the entrance of the branch channel (344) is 15 degrees.

12. The aerosol generating device according to claim 9, characterized in that: The divergence angle at the outlet of the main channel (343) is 15 degrees.

13. The aerosol generating device according to claim 7, characterized in that: The extension path of the main channel (343) between the first end (341) and the second end (342) is a continuously bent broken line, and the branch channel (344) is an arc-shaped channel connected to the main channel (343) at both ends.

14. The aerosol generating device according to claim 13, characterized in that: The layout angle of the branch channel (344) is equal to the layout angle of the main channel (343), and the layout angle of the main channel (343) is 30 degrees.

15. The aerosol generating device according to claim 13, characterized in that: The width of the branch channel (344) is equal to the width of the main channel (343), and the width of the main channel (343) is 0.5 mm.

16. The aerosol generating device according to claim 13, characterized in that: The length of the main channel (343) is 6.5 mm, and the length of the branch channel (344) is 4 mm.

17. The aerosol generating device according to claim 13, characterized in that: The bending radius of the branch channel (344) is 0.75 mm.

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