CN220274953U - Aerosol generating device - Google Patents

Abstract

The present application relates to an aerosol-generating device having a body portion with a proximal end and a distal end, a receiving cavity provided in the body portion for receiving a liquid matrix, and first and second air flow channels independent of each other; a suction nozzle disposed at a proximal end of the body portion; an atomizing assembly disposed adjacent the distal end of the body portion for atomizing the liquid matrix to generate an aerosol; a sensor assembly disposed adjacent the proximal end of the body portion for detecting a change in airflow; the first air flow channel is communicated between the atomized assembly and the suction nozzle, and the second air flow channel is communicated between the sensor assembly and the suction nozzle.

Description

Aerosol generating device

Technical Field

The present application relates to the field of aerosol generation technology, and in particular to a device capable of generating an aerosol by heating an atomized liquid matrix.

Background

The aerosol-generating device has a receiving cavity for receiving a liquid substrate and an atomizing assembly for atomizing the liquid substrate to generate an aerosol, and further has a sensor for detecting a suction event and an airflow channel for directing the aerosol to the mouthpiece. However, in long term use of existing aerosol-generating devices, because the sensor is in fluid communication with the atomizing assembly and the sensor is located below the atomizing assembly, liquid matrix leaking through the atomizing assembly and condensate formed in the airflow channel tend to flow to the sensor under its own weight, thereby affecting the detection sensitivity of the sensor or triggering the sensor in an undesirable condition.

Disclosure of Invention

It is an object of the present application to provide an aerosol-generating device capable of preventing the flow of liquid matrix and condensate into the sensor assembly.

An aerosol-generating device provided in an embodiment of the present application has a body portion having a proximal end and a distal end, the body portion having a receiving cavity disposed therein for receiving a liquid matrix, and first and second airflow channels independent of each other;

a suction nozzle disposed at a proximal end of the body portion;

an atomizing assembly disposed adjacent a distal end of the body portion for atomizing the liquid matrix to generate an aerosol;

a sensor assembly disposed adjacent the proximal end of the body portion for detecting a change in airflow;

wherein, first air current passageway intercommunication is between atomizing subassembly and the suction nozzle, second air current passageway intercommunication is between sensor subassembly and the suction nozzle.

The first airflow channel communicated with the atomization assembly and the second airflow channel communicated with the sensor assembly are respectively in fluid communication with the suction nozzle, and the first airflow channel and the second airflow channel are mutually independent, so that liquid matrixes leaked through the atomization assembly can be prevented from flowing into the second airflow channel, condensate flowing back along the first airflow channel can be reduced or even prevented from flowing into the second airflow channel, and the sensor assembly can be guaranteed to maintain higher detection sensitivity in the long-term use process of the aerosol generating device.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

Fig. 1 is a schematic view of an aerosol-generating device according to an embodiment of the present application;

fig. 2 is a cross-sectional view of an aerosol-generating device according to an embodiment of the present application;

fig. 3 is a cross-sectional exploded view of an aerosol-generating device provided in an embodiment of the present application;

fig. 4 is an exploded view of an aerosol-generating device provided in an embodiment of the present application;

fig. 5 is a cross-sectional exploded view of an aerosol-generating device provided in accordance with another embodiment of the present application;

FIG. 6 is a schematic view of a mounting base according to an embodiment of the present application;

in the figure:

1. a suction nozzle; 11. a suction chamber; 12. a first chamber; 13. a second chamber; 14. a spacer; 141. a diversion inclined plane; 15. a seal; 151. a first vent hole; 152. a second vent hole; 153. a flexible portion; 154. a rigid portion; 155. a first columnar portion; 156. a second column section; 16. a liquid accumulation bin;

2. a main body portion; 21. a first bracket; 211. a first communication hole; 212. a second communication hole; 213. a first air hole; 214. a liquid injection port;

22. an atomizing assembly; 221. a liquid-absorbing member; 222. a heating element; 23. an airway tube; 24. a lower seal; 25. a second bracket; 26. a third bracket; 261. a support plate; 262. a support column; 27. a charging connector; 28. a housing; 281. a charging port; 29. a fourth bracket;

3. a liquid matrix.

4. A power supply assembly; 41. a battery cell;

5. a sensor assembly; 51. a mounting base; 511. a detection chamber; 512. abutting the wall; 513. a second air hole; 514. sealing the convex ribs; 52. an air flow sensor;

A. a second airflow passage; B. and an outside communication hole.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terms "first," "second," "third," and the like in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number or order of technical features indicated. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship or movement between the components under a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is correspondingly changed. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may also be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, 2 and 5, an embodiment of the present application provides an aerosol-generating device comprising a body portion 2 and a mouthpiece 1 disposed at a proximal end of the body portion 2, at least part of the mouthpiece 1 being adapted to be engaged by a user.

The body portion 2 has a first bracket 21 and an atomizing assembly 22 therein. The first holder 21 is formed inside with a receiving chamber for receiving the liquid matrix 3. The liquid matrix 3 may comprise a tobacco material-containing liquid containing volatile tobacco flavour components, and may also be a non-tobacco material-containing liquid. The liquid base may include water, a medicinal liquid, a solvent, ethanol, a plant extract, a spice, a flavoring agent, or a vitamin mixture, etc., and the spice may include betel nut extract, menthol, peppermint, spearmint oil, various fruit flavor components, etc., but is not limited thereto. The flavoring agent may comprise ingredients that may provide various aromas or flavors to the user. The vitamin mixture may be a mixture mixed with at least one of vitamin a, vitamin B, vitamin C, and vitamin E, but is not limited thereto. Aerosol-generating devices may be used in different fields, such as medical, electronic aerosol nebulization, etc.

The atomizing assembly 22 is in fluid communication with the receiving chamber, and the atomizing assembly 22 is for atomizing a liquid substrate to generate an aerosol, and a first air flow channel is formed in the aerosol generating device in fluid communication with the atomizing assembly 22 for directing the aerosol to the mouthpiece 1. Specifically, the aerosol-generating device further comprises an airway tube 23, the airway tube 23 being connected to the atomizing assembly 22, and the airway tube 23 defining at least part of the first airflow path, the atomizing assembly 22 atomizing the liquid matrix to form an aerosol that may enter the airway tube 23, or the atomizing assembly 22 may atomize the liquid matrix in the airway tube 23 to form an aerosol. An airway tube 23 may be provided in the body portion 2, in the embodiment shown in figures 2 and 5, the airway tube 23 extending longitudinally through the receiving chamber of the aerosol-generating device such that the liquid matrix 3 may surround the airway tube 23.

In one embodiment, the atomizing assembly 22 includes a wick element in fluid communication with the receiving chamber and a heat generating element, wherein the wick element is a porous body capable of absorbing the liquid matrix and of directing the liquid matrix into an atomizing area of the heat generating element. The heating element is used for atomizing at least part of the liquid matrix on the liquid absorbing element to form aerosol.

The absorbent member may have a relatively low stiffness, e.g., the absorbent member may be made of a flexible fibrous material, such as cotton fibers, nonwoven fibers, or sponge, etc., and the absorbent member may be made in the form of a strip or rod or tube.

The liquid-absorbing element may have a relatively high hardness, for example, the liquid-absorbing element may be a porous ceramic, for example, the liquid-absorbing element may be at least one of a porous alumina ceramic, a porous silica ceramic, a porous silicon carbide ceramic, a porous cordierite ceramic, a porous mullite ceramic, a porous sepiolite ceramic, and a porous diatomaceous earth ceramic. It will be appreciated that the wicking element is not limited to porous ceramics, but may be other porous materials, for example, the wicking element may also be a porous glass substrate, a porous plastic substrate, a porous metal substrate, or the like.

A heating element may be coupled to the wick element to heat at least a portion of the liquid matrix on the wick element to atomize it to produce an aerosol. When the liquid absorbing element has smaller hardness, the heating element can be a heating circuit, a heating sheet or a heating net. When the liquid absorption element has larger hardness, the heating element can be a heating film, a heating circuit, a heating sheet or a heating net.

In the embodiment depicted in fig. 2 and 5, the wick 221 is tubular with a cavity and the wick 221 extends in the longitudinal direction of the aerosol-generating device, the heat-generating element 222 is disposed adjacent to the inner surface of the wick, and the inner surface of the wick 221 forms the atomizing face of the atomizing assembly 22 such that at least a portion of the aerosol is formed in the cavity of the wick 221. The wall of the air passage pipe 23 is provided with a liquid guide hole, at least part of the atomization assembly 22 is arranged in the air passage pipe 23, and the liquid suction element 221 is abutted with the liquid guide hole or part of the liquid suction element 221 passes through the liquid guide hole, so that the liquid matrix 3 in the containing cavity can be absorbed by the liquid suction element 221.

Alternatively, in another embodiment, the atomizing assembly includes an ultrasonic wave plate and a liquid guide in fluid communication with the receiving chamber, the ultrasonic wave plate being capable of generating ultrasonic waves that cause the liquid matrix guided by the liquid guide to form microscopic droplets to form an aerosol.

The body portion 2 further comprises a lower seal 24 and a second bracket 25, the lower seal 24 being adapted to seal the distal end of the receiving chamber to avoid leakage of the liquid matrix 3 from the distal end of the receiving chamber. The second bracket 25 is used for supporting the lower seal member 24 so that the lower seal member 24 is in sealing connection with the first bracket 21. The second bracket 25 may also support the atomizing assembly 22 so that the atomizing assembly 22 remains connected to the airway tube 23.

The body portion 2 also has a first air inlet passage therein which is in fluid communication with the outside and the air duct 23, through which air from the outside enters the body portion 2 when the user sucks the mouthpiece 1, flows through the atomizing assembly 22, then mixes with the formed aerosol and flows through the first air flow passage, and finally into the mouthpiece 1.

In the embodiment shown in fig. 2 and 5, a third bracket 26 for supporting the second bracket 25 is further provided in the body part 2, the third bracket 26 comprising a bracket plate 261 extending transversely to the aerosol-generating device and a bracket post 262 extending longitudinally from the bracket plate 261 to the aerosol-generating device, through holes defining at least partially the first air inlet channel being formed in the bracket post 262, the bracket post 262 extending in a direction towards the second bracket 25, whereby leakage of liquid matrix 3 and condensate flowing to the bracket plate 261 into the through holes is avoided. A charging connector 27 may also be provided in the body portion 2, the charging connector 27 being located at the distal end of the body portion 2, and the charging connector 27 and the second bracket 25 being located on opposite sides of the third bracket 26, the third bracket 26 being capable of preventing leakage of the liquid matrix 3 and condensate onto the charging connector 27, thereby enabling protection of the charging connector 27. In an example, the main body part 2 further comprises a housing 28, the first, second and third brackets 21, 25, 26 are each arranged in the housing 28, the distal end of the housing 28 has a charging port 281, and the charging connector 27 is in clearance fit with the charging port 281, so that air can enter the interior of the main body part 2 through the clearance, i.e. the clearance can constitute an air intake hole of the first air intake passage. It should be noted that a dedicated hole may be provided in the housing 28 as an air intake hole of the first air intake passage.

Referring to fig. 2 and 5, a fourth bracket 29 and a power supply assembly 4 may be further disposed in the main body 2, and the power supply assembly 4 includes a circuit board and a battery 41, where the fourth bracket 29 is used to hold the battery 41. The first support 21 and the fourth support 29 may be arranged in sequence in a lateral direction of the aerosol-generating device, the power supply assembly 4 being configured to be electrically connected to the atomizing assembly 22 for providing an electrical power supply to the atomizing assembly 22 for atomizing the liquid matrix 3, wherein the circuit board may control the current/voltage level, the current/voltage pulse frequency, the current/voltage duty cycle, etc. provided by the electrical core 41 to the atomizing assembly 22. The circuit board may also control the charging connector 27 to charge the battery 41, provide charging protection for the battery 41, and the like.

Referring to fig. 2, 3 and 5, the aerosol-generating device further comprises a sensor assembly 5, the sensor assembly 5 being adapted to detect a change in the airflow and being capable of generating at least one electrical parameter change upon detection of the change in the airflow. At least one electrical parameter change formed on the sensor assembly 5 may form a control command, at least one control circuit on the circuit board is electrically connected to the sensor assembly 5, the circuit board is capable of obtaining the control command and responding accordingly based on the control command, for example, the user can cause the sensor assembly 5 to change the air flow in the detection range when sucking the suction nozzle 1, so that the sensor assembly 5 generates the control command, the circuit board controls the atomizing assembly 22 to atomize the liquid substrate 3 based on the control command, or the processor on the circuit board counts the sucked number based on the control command, etc.

In one embodiment, the sensor assembly 5 includes a mount 51 having a detection chamber 511 and an airflow sensor 52 at least partially secured within the detection chamber 511, the airflow sensor 52 being configured to detect changes in airflow within the detection chamber 511 and to generate control commands when the changes in airflow within the detection chamber 511 exceed a threshold. In an embodiment, the airflow sensor 52 comprises a detection circuit and a deformable detection surface, the detection surface being arranged towards the detection chamber 511 and being deformed when the airflow in the detection chamber 511 changes beyond a threshold value, the detection circuit being configured to generate at least one electrical parameter change when the detection surface is deformed. For example, different directions of deformation or different degrees of deformation of the detection surface may cause different changes in the amount of charge on the detection surface, the detection circuit being configured to detect changes in the amount of charge on the detection surface and to generate at least one change in an electrical parameter based on the changes in the amount of charge. In one embodiment, the airflow sensor 52 is an air pressure sensor capable of identifying the air pressure in the detection chamber 511, and generating at least one electrical parameter change when the negative pressure in the detection chamber 511 exceeds a threshold value, i.e. capable of issuing a control command.

A second airflow channel a is formed in the aerosol-generating device in fluid communication with the sensor assembly 5, through which second airflow channel a air in the detection chamber 511 may flow when the user sucks the mouthpiece 1, eventually into the mouthpiece 1, thereby causing a change in the airflow in the detection chamber 511.

In one embodiment, the suction nozzle is assembled at the proximal end of the body portion, and the sensor assembly is disposed in the suction nozzle such that the second airflow path is defined entirely by the suction nozzle.

Alternatively, the sensor assembly 5 is disposed in the body portion 2 such that at least part of the second air flow passage a is formed in the body portion 2. Based on this, in an example, the first air flow channel and the second air flow channel a are independent from each other in the main body part 2, i.e. the first air flow channel and the second air flow channel a do not meet in the main body part 2, and thus the first air flow channel and the second air flow channel a are in fluid communication with the suction nozzle 1, respectively. When a thick liquid matrix 3 is used, the first air flow channel, particularly the position of the atomizing assembly 22, is easily blocked by the liquid matrix 3, and in this case, the independent second air flow channel A can still trigger the air flow sensor 52 to start the atomizing assembly 22, so that the liquid matrix 3 at the blocked position is atomized again, which helps to unblock the first air flow channel, and the aerosol generating device works normally.

Referring to fig. 2 and 3, the proximal end of the first bracket 21 is abutted with the suction nozzle 1, and the proximal end of the first bracket 21 is formed with a first communication hole 211 for fixing the air duct 23 and a second communication hole 212 for defining at least part of the second air flow path a.

The proximal end of the airway tube 23 may be inserted into the first communication hole 211, of course a part of the proximal end of the first bracket 21 may be inserted into the airway tube 23, so that at least part of the first communication hole 211 may extend in the airway tube 23, based on which case the airway tube 23 is in fluid communication with the mouthpiece 1 via the first communication hole 211, i.e. the proximal end of the first communication hole 211 is an air flow port of the first air flow channel; alternatively, the proximal end of the airway tube may pass through the first communication hole such that the airway tube is in direct fluid communication with the mouthpiece, i.e. the proximal end of the airway tube is the airflow port of the first airflow channel.

The proximal end of the second communication hole 212 may be an air flow port of the second air flow channel a, provided toward the suction nozzle 1, and the proximal end of the second communication hole 212 is opened to be in fluid communication with the suction nozzle 1. The second communication hole 212 is in fluid communication with the detection cavity 511 of the sensor assembly 5, more specifically, referring to fig. 3, a first air hole 213 is formed on the first bracket 21 and is in fluid communication with the second communication hole 212, the extending direction of the first air hole 213 may intersect with the extending direction of the second communication hole 212, for example, the second communication hole 212 may extend generally along the longitudinal direction of the aerosol generating device, the first air hole 213 may extend generally along the transverse direction of the aerosol generating device, and the second communication hole 212 and the first air hole 213 respectively define a part of the second air flow channel a; the distal end of the second communication hole 212 may be formed with a closed bottom portion, the first air holes 213 being disposed toward the opening of the second communication hole 212 at intervals of the bottom portion, and the first air holes 213 being disposed above the bottom portion toward the opening of the second communication hole 212 with reference to the suction nozzle 1 being disposed above the atomizing assembly 22, so that the liquid flowing into the second communication hole 212 can be collected by the bottom portion of the second communication hole 212 to prevent the liquid from spreading to the detection chamber 511 through the first air holes 213.

Referring to fig. 3 and 6, the mounting seat 51 of the sensor assembly 5 has an abutment wall 512, a second air hole 513 in fluid communication with the detection cavity 511 is formed on the abutment wall 512, and the abutment wall 512 is disposed towards the first bracket 21 for abutting against the first bracket 21, so that the first air hole 213 and the second air hole 513 are in mutual correspondence and in fluid communication with each other by abutting against the first bracket 21 through the abutment wall 512. In order to increase the tightness of the abutment wall 512 with the first support 21, the side of the abutment wall 513 facing the first support 21 is provided with a sealing rib 514 arranged around the first air hole 213 and the second air hole 513, the sealing rib 514 may be injection molded integrally with the abutment wall 512, or the sealing rib 514 may be a sealing ring and clamped by the abutment wall 512 and the first support 21, the sealing rib 514 being used for a sealing connection between the first support 21 and the abutment wall 512 to prevent air leakage from between the first support 21 and the abutment wall 512 and to prevent external air from entering the second air hole 513 from between the first support 21 and the abutment wall 513 and further into the detection chamber 511.

Referring to fig. 2, the main body portion further includes a second air inlet channel different from the first air inlet channel, and the second air inlet channel is in air path communication with the outside and the first end surface of the airflow sensor 52, where the first end surface may be opposite to the detection surface, so that the air pressure of the first end surface of the airflow sensor 52 is equal to the air pressure of the outside, and thus the first end surface can be a stable reference for the air flow change of the detection cavity 511.

The outside communication hole of the second intake passage may be different from the intake hole of the first intake passage, for example, the sensor assembly 5 may be closer to the proximal end of the main body portion 2 than the distal end of the main body portion 2, the housing 28 of the main body portion 2 may have a through hole B on the proximal end thereof, the through hole B may form the outside communication hole of the second intake passage, and the intake hole of the first intake passage may be provided at the distal end of the main body portion 2.

Referring to fig. 2-4, the proximal end of the suction nozzle 1 is concavely formed with a suction cavity 11, the suction cavity 11 is directly communicated with the outside, and the air flow sucked into the suction nozzle 1 finally flows into the mouth of the user through the suction cavity 11.

The airflows in the first and second airflow channels a may not be fused before flowing into the suction chamber 11. More specifically, the suction nozzle 1 has a first chamber 12 and a second chamber 13 spaced from each other, the first chamber 12 being configured to provide at least a partial passage of the air flow in the first air flow passage into the suction chamber 11, and the second chamber 13 being configured to provide at least a partial passage of the air flow in the second air flow passage a into the suction chamber 11. Because the first chamber 12 and the second chamber 13 are spaced apart from each other, the air flow in the first chamber 12 and the air flow in the second chamber 13 are isolated from each other before the air flow enters the suction chamber 11.

Based on this, a spacer 14 is provided inside the suction nozzle 1, the spacer 14 being provided between the first chamber 12 and the second chamber 13, the spacer 14 being configured so that the first chamber 12 and the second chamber 13 are spaced apart from each other; referring to fig. 3, the partition 14 may have a flow guiding slope 141 inclined toward the first chamber 12 and/or the second chamber 13, the proximal end of the suction chamber 11 being disposed adjacent to the outside, at least part of the distal end boundary of the suction chamber 11 being defined by the flow guiding slope 141, the flow guiding slope 141 being capable of guiding condensate formed at the chamber wall of the suction chamber 11 and spreading along the chamber wall of the suction chamber 11 to the flow guiding slope 141 to the first chamber 12 and/or the second chamber 13. The diversion ramp 141 may be inclined only toward the first chamber 12 or the second chamber 13 so that condensate can be diverted only to the first chamber 12 or the second chamber 13. The flow guiding chamfer 141 is inclined locally towards the first chamber 12 and locally towards the second chamber 13, e.g. the flow guiding chamfer 141 is configured as a bent roof-like shape, so that there are two oppositely arranged inclined planes 141, e.g. the flow guiding chamfer 141 may be configured as an arch-like roof-like shape, see fig. 3.

Referring to fig. 2 and 3, the aerosol-generating device may further comprise a sealing member 15 supporting the spacer member 14, wherein the sealing member 15 is provided with a first vent hole 151 for communicating the first air flow channel with the first chamber 12 and a second vent hole 152 for communicating the second air flow channel a with the second chamber 13, and at least part of the distal boundary of the first chamber 12 and at least part of the distal boundary of the second chamber 13 may be defined by the sealing member 15. And the first vent hole 151 and the second vent hole 152 may be provided at a distance from the spacer 14 such that the liquid that has spread along the spacer 14 cannot directly flow into the first vent hole 151 and the second vent hole 152. In order to prevent liquid from flowing into the first vent hole and the second vent hole, the side of the sealing member facing the first chamber and the second chamber can be further provided with annular ribs, at least one annular rib surrounds the periphery of the opening of the first vent hole facing the first chamber, at least one annular rib surrounds the periphery of the opening of the second vent hole facing the second chamber, and the purpose is to prevent the liquid from flowing into the first vent hole and the second vent hole through the annular ribs.

Referring to fig. 3, the sealing member 15 may include a flexible portion 153, and the flexible portion 153 may be made of a flexible material such as silicone or rubber, and the flexible portion 153 is configured to be connected to the first bracket 21 to seal the proximal end of the accommodating chamber. The sealing member 15 may further include a rigid portion 154, the rigidity of the rigid portion 154 is greater than that of the flexible portion 153, with reference to the suction nozzle 1 being located above the atomizing assembly 22, the rigid portion 154 is located below the spacer 14 and the sealing member 15 supports the spacer 14 through the rigid portion 154, the flexible portion 153 is located below the rigid portion 154 and supports the rigid portion 154, each of the rigid portion 154 and the flexible portion 153 has an air flow hole, and the corresponding air flow passages of the rigid portion 154 and the flexible portion 153 are correspondingly communicated, thereby forming the first air vent hole 151 and the second air vent hole 152.

Referring to fig. 2 and 3, the first chamber 12 and the second chamber 13 may be disposed at opposite sides of the suction chamber 11, but not limited thereto.

Alternatively, the airflows in the first airflow channel and the second airflow channel a may flow into a common space, and then flow into the suction chamber 11 through the common space, i.e., the airflows in the first airflow channel and the second airflow channel a may be fused before flowing into the suction chamber 11.

Based on this, the mouthpiece 1 comprises a liquid accumulation chamber 16, the liquid accumulation chamber 16 forming the above-mentioned common interval, the liquid accumulation chamber 16 may be located at the distal end of the suction chamber 11 and in fluid communication with the suction chamber 11, i.e. the liquid accumulation chamber 16 is located below the suction chamber 11 with reference to the mouthpiece 1 being located above the atomizing assembly 22. The liquid product bin 16 is capable of collecting condensate formed on the cavity wall of the suction cavity 11, and the first air flow channel and the second air flow channel A are in fluid communication with the suction cavity 11 through the liquid product bin 16.

Referring to fig. 5, the aerosol-generating device may further comprise a sealing member 15 defining a distal end boundary of the liquid accumulation chamber 16, the sealing member 15 having a first columnar portion 155 and a second columnar portion 156 extending toward the proximal end of the mouthpiece 1 so as to extend beyond the distal end of the liquid accumulation chamber, that is, the proximal end of the first columnar portion 155 and the proximal end of the second columnar portion 156 are located above the bottom of the liquid accumulation chamber 16, a first vent hole 11 communicating the first air flow channel with the liquid accumulation chamber 16 is formed in the first columnar portion 155, a second vent hole 152 communicating the second air flow channel with the liquid accumulation chamber 16 is formed in the second columnar portion 156, and the first columnar portion 155 and the second columnar portion 156 are capable of preventing liquid in the liquid accumulation chamber 16 from spreading into the first vent hole 151 and the second vent hole 152, and thus being capable of preventing liquid from flowing toward the sensor assembly 5 through the second air flow channel a.

Referring to fig. 5, the sealing member 15 may include a flexible portion 153, and the flexible portion 153 may be made of a flexible material such as silicone or rubber, and the flexible portion 153 is configured to be connected to the first bracket 21 to seal the proximal end of the accommodating chamber. The sealing member 15 may further comprise a rigid portion 154, wherein the rigidity of the rigid portion 154 is greater than that of the flexible portion 153, the rigid portion 154 defines a bottom of the effusion cell 16 with reference to the nozzle 1 being located above the atomizing assembly 22, the flexible portion 153 is located below the rigid portion 154 and supports the rigid portion 154, the rigid portion 154 has a first opening, the flexible portion 153 has a flexible column extending toward the effusion cell 16 and being higher than the bottom of the effusion cell proximally, a portion of the flexible column defines the first vent hole 151, a portion of the flexible column defines the second vent hole 152, and the flexible column extends into the effusion cell 16 through the first opening.

Referring to fig. 2 and 5, the atomizing assembly 22 is positioned closer to the distal end of the body portion 2 than to the proximal end of the body portion 2, i.e., the atomizing assembly 22 is positioned adjacent the distal end of the body portion 2. The sensor assembly 5 is located closer to the proximal end of the body portion 2 than to the distal end of the body portion 2, i.e. the sensor assembly 5 is located adjacent to the proximal end of the body portion 2. The sensor assembly 5 may be located closer to the suction nozzle 1 than the atomizing assembly 22, on the one hand, so that liquid leaking from the position of the atomizing assembly 22 or condensed liquid in the first air flow channel is difficult to enter the sensor assembly 5 located closer to the suction nozzle 1 or closer to the proximal end of the main body portion 2, and the probability of abnormal triggering of the air flow sensor 52 can be reduced; on the other hand, the trigger path (second air flow path) between the sensor assembly 5 and the suction nozzle 1 is made short, and the sensitivity of the air flow sensor 52 triggering can be effectively improved.

Referring to fig. 4, a liquid injection port 214 communicating with the receiving chamber is provided at the proximal end of the main body 2, and the liquid substrate 3 can be injected into the receiving chamber through the liquid injection port 214. The mouthpiece 1 may be coupled to the proximal end of the main body part 2 by means of assembly, and when the mouthpiece 1 is not mounted on the main body part 2, the air flow port of the first air flow channel and the liquid filling port 214 may be exposed, so that the liquid matrix 3 can be filled into the accommodating chamber through the liquid filling port 214. Any of the above embodiments of the seal 15 may seal the filling port 214 when the mouthpiece 1 is mounted on the body portion 2 to prevent leakage of the liquid matrix 3 through the filling port 214.

In one example, the fluid intersection of the first and second airflow channels a is closer to the nozzle 1 than the atomizing assembly 22, including the first and second airflow channels a fluidly intersecting in the nozzle, or including the first and second airflow channels a fluidly intersecting in the main body portion 2.

Referring to fig. 2 and 5, the sensor assembly 5 may be disposed above the atomizing assembly 22 with reference to the nozzle 1 being disposed above the atomizing assembly 22.

It should be noted that the description and drawings of the present application show preferred embodiments of the present application, but are not limited to the embodiments described in the present application, and further, those skilled in the art can make modifications or changes according to the above description, and all such modifications and changes should fall within the scope of the appended claims.

Claims (14)

1. An aerosol-generating device, comprising:

a body portion having a proximal end and a distal end, the body portion having a receiving chamber disposed therein for receiving a liquid matrix, and first and second gas flow passages independent of each other;

a suction nozzle disposed at a proximal end of the body portion;

an atomizing assembly disposed adjacent a distal end of the body portion for atomizing the liquid matrix to generate an aerosol;

a sensor assembly disposed adjacent the proximal end of the body portion for detecting a change in airflow;

wherein, first air current passageway intercommunication is between atomizing subassembly and the suction nozzle, second air current passageway intercommunication is between sensor subassembly and the suction nozzle.

2. An aerosol-generating device according to claim 1, wherein the sensor assembly is located on the body portion closer to the mouthpiece than the atomizing assembly.

3. An aerosol-generating device according to claim 1, wherein the mouthpiece has first and second spaced apart chambers, the proximal recess of the mouthpiece defining a suction cavity, the first chamber being configured to provide a passage for airflow in the first airflow passage into the suction cavity, the second chamber being configured to provide a passage for airflow in the second airflow passage into the suction cavity.

4. An aerosol-generating device according to claim 3, wherein a spacer is provided within the mouthpiece, the spacer being provided between the first and second chambers, the spacer having a diversion ramp inclined towards the first and/or second chamber.

5. An aerosol-generating device according to claim 3, comprising a seal having a first vent opening communicating the first airflow passage with the first chamber and a second vent opening communicating the second airflow passage with the second chamber.

6. An aerosol-generating device according to claim 5, wherein the seal comprises a flexible portion configured to seal the receiving cavity.

7. An aerosol-generating device according to claim 3, wherein the first and second chambers are provided on opposite sides of the inhalation chamber.

8. An aerosol-generating device according to claim 1, wherein the mouthpiece comprises a liquid reservoir and the proximal recess of the mouthpiece forms a suction chamber, the first and second airflow channels each being in fluid communication with the suction chamber via the liquid reservoir, the liquid reservoir being for collecting condensate formed on the chamber walls of the suction chamber.

9. An aerosol-generating device according to claim 8, comprising a seal having a first cylindrical portion and a second cylindrical portion each extending towards the proximal end of the mouthpiece, the first cylindrical portion having a first vent hole formed therein communicating the first airflow passage with the liquid product cartridge, the second cylindrical portion having a second vent hole formed therein communicating the second airflow passage with the liquid product cartridge.

10. An aerosol-generating device according to claim 1, wherein the body portion comprises a first bracket and an airway tube defining at least part of the first airflow passage, the receiving chamber being formed in the first bracket, a proximal end of the first bracket being formed with a first communication hole communicating with the airway tube and a second communication hole defining at least part of the second airflow passage, the proximal end of the first bracket being in abutment with the mouthpiece.

11. An aerosol-generating device according to claim 1, wherein the sensor assembly comprises a mount having a detection chamber and an airflow sensor mounted in the detection chamber of the mount, the detection chamber being in fluid communication with the second airflow channel.

12. An aerosol-generating device according to claim 11, wherein the main body portion is provided with an outside communication hole providing a communication path between one side of the airflow sensor and outside air, the outside communication hole being located at a proximal end of the main body portion.

13. An aerosol-generating device according to claim 1, wherein the airflow ports of the first and second airflow channels are both located on the proximal end of the body portion.

14. An aerosol-generating device according to claim 13, wherein a liquid filling port is provided in the proximal end of the body portion in communication with the receiving cavity, the air flow port of the first air flow channel and the liquid filling port being exposed when the mouthpiece is not mounted to the body portion.