CN218354609U - Aerosol generating device - Google Patents

Abstract

The application relates to an aerosol generating device, which comprises a shell, a first accommodating cavity and an air flow channel, wherein the first accommodating cavity is vertically arranged and used for accommodating at least part of an aerosol generating product, and the shell is also provided with an air inlet communicated with the air flow channel; a heating assembly disposed within the housing for heating the aerosol-generating article to produce an aerosol; and the check valve is transversely arranged in the air flow channel, external air enters the first accommodating cavity through the air inlet hole and the check valve, and the air flow in the first accommodating cavity is blocked by the check valve and cannot flow back to the air inlet hole.

Description

Aerosol generating device

Technical Field

The embodiment of the application relates to the technical field of aerosol generation, in particular to an aerosol generating device.

Background

Aerosol-generating devices typically comprise a heater for heating an aerosol-generating article to cause it to generate an aerosol, and a cell for electrical connection to the heater to provide heat to the heater. The aerosol generating device further comprises an air inlet aperture and an air flow passage through which air enters the air flow passage and thence into the interior of the aerosol-generating article.

In order for an aerosol-generating article to volatilise to produce an aerosol, it is generally necessary to heat the aerosol-generating article to a temperature above 200 degrees celsius. When stopping the suction, the high temperature air among the aerosol generating device can flow back to the inlet port through airflow channel, and then discharges through the inlet port, so can design longer, complicated airflow channel in industry usually, be favorable to the air of cooling backward flow to the inlet port, and in order to have longer airflow channel, set up the inlet port at the lower extreme of aerosol generating device usually, often need occupy the partial accommodation space of electric core.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an aerosol generating device, prevents air backflow to the inlet port through set up the check valve in airflow channel, can prevent effectively that high temperature air from spilling over from the air inlet, also is favorable to the inner space of save set.

An aerosol generating device provided by the embodiment of the application comprises:

the aerosol generating device comprises a shell, a first air inlet and a second air inlet, wherein the shell is internally provided with a first accommodating cavity and an air flow channel, the first accommodating cavity is vertically arranged and is used for accommodating at least part of an aerosol generating product, and the shell is also provided with an air inlet communicated with the air flow channel;

a heating assembly disposed within the housing for heating the aerosol-generating article to produce an aerosol;

and the one-way valve is transversely arranged in the air flow channel, external air enters the first accommodating cavity through the air inlet hole and the one-way valve, and the air flow in the first accommodating cavity is blocked by the one-way valve and cannot flow back to the air inlet hole.

An aerosol generating device provided by the embodiment of the application comprises:

a housing having a first receiving cavity and an airflow channel therein, the first receiving cavity being configured to receive at least a portion of an aerosol-generating article, the airflow channel including a vertically arranged first airflow channel and a horizontally arranged second airflow channel, the housing further having an air inlet, air passing through the air inlet, the second airflow channel, and the first airflow channel in sequence into the first receiving cavity;

a heating assembly disposed within the housing for heating the aerosol-generating article to produce an aerosol; and

a check valve disposed in the airflow passage;

wherein the transverse length of the second airflow channel is not more than 12mm.

According to the aerosol generating device, the check valve is arranged in the airflow channel to prevent high-temperature air in the first accommodating cavity from flowing back to the air inlet hole, so that the air inlet hole and the peripheral shell of the air inlet hole can be effectively prevented from burning hands. Therefore, the length of the air flow passage can be effectively shortened, so that the aerosol generating device has a smaller size. In some cases, the space of the airflow channel in the aerosol generating device is reduced, so that a larger space for accommodating the battery cells can be reserved, the aerosol generating device can be suitable for the battery cells with larger electric storage capacity or the battery cells with more electric storage capacity, and the standby time of the aerosol generating device is prolonged.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic diagram of an aerosol generating device provided by an embodiment of the present application;

figure 2 is a schematic view of another perspective of an aerosol-generating device provided by an embodiment of the present application;

figure 3 is a cross-sectional view of an aerosol generating device provided by an embodiment of the present application;

figure 4 is a cross-sectional view of a first portion of an aerosol generating device provided by an embodiment of the present application;

FIG. 5 is a cross-sectional view of a heating assembly provided in accordance with an embodiment of the present application;

figure 6 is a partial cross-sectional view of an aerosol generating device provided by an embodiment of the present application;

figure 7 is a schematic view of a duckbill valve provided in accordance with an embodiment of the present application;

figure 8 is a cross-sectional view of a duckbill valve provided in accordance with an embodiment of the present application;

figure 9 is a schematic view of a duckbill valve provided in accordance with an embodiment of the present application;

FIG. 10 is a schematic view of a stent provided in accordance with an embodiment of the present application;

fig. 11 is a schematic diagram illustrating a bracket separated from a battery cell according to an embodiment of the present application;

in the figure:

1. an aerosol-generating article;

2. a housing; 21. a first portion; 211. a first accommodating chamber; 212. a user interface; 213. an air intake; 22. a second portion; 221. a second accommodating chamber; 23. and (6) shielding the cover.

3. A heating assembly; 31. a heater; 32. a receiving cavity; 33. a housing; 341. vacuum interlayer; 342. an air layer; 35. an upper end cover; 36. a lower end cover; 361. a tubular extension;

4. a power supply component; 41. an electric core; 42. a circuit board;

5. elbow pipe 51, airflow channel; 52. a vertical portion; 521. a first air flow passage; 53. a transverse portion; 531. a second air flow channel; 54. a first opening; 55. a second opening;

6. a one-way valve; 61. a duckbill valve; 611. a lip portion; 612. an installation part; 612a, a first part; 612b, a second portion; 612c, an embedded groove; 613. a base; 614. an air outlet; 615. an air inlet; 616. sealing the protrusion;

7. an airflow sensor; 7a, fixed;

8. a support;

9. a conductive member;

10. a charging jack; 101. a charging port.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance or implicit indication of the number or order of technical features indicated. In the embodiment of the present application, all directional indicators (such as up, down, left, right, front, and rear' \8230;) are used only to explain the relative positional relationship or movement of the components at a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" 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 steps or elements but may alternatively include other steps or elements not expressly 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 can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

It will be understood that when an element is referred to as being "secured 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 intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

An embodiment of the present application provides an aerosol-generating device for heating an aerosol-generating article to volatilize an aerosol from the aerosol-generating article for consumption, the aerosol may comprise herbal medicine, nicotine or flavourant such as tobacco flavourant.

In the embodiment shown in fig. 1 to 3, the aerosol-generating device comprises a housing 2, wherein the upper half of the housing 2 constitutes a first portion 21, and the lower half constitutes a second portion 22, wherein the terms "upper half 21" and "lower half 22" are only used in a positional relationship, which means that the first portion 21 and the second portion 22 are arranged side by side (up and down, in a row) in the axial direction (vertical direction) of the housing 2, and are not necessarily divided into two halves having the same axial length strictly according to the axial length of the housing 2, and the first portion 21 may have a larger axial length, a smaller axial length, or the same axial length than the second portion 22. The housing 2 may be of unitary construction, the first and second portions 21, 22 may be integrally formed; it will of course be appreciated that the first and second parts 21, 22 may be formed separately and then assembled to each other to form at least part of the complete form of the housing 2.

Referring to figures 1-3, the first part 21 has formed therein a first receiving cavity 211 for receiving an aerosol-generating article 1, the aerosol-generating device further comprising a heating element 3 and a power supply element 4, the heating element 4 being disposed in the first part 21 for heating the aerosol-generating article 1 in the first receiving cavity 211. The power supply module 4 comprises a battery cell 41 and a circuit board 42 for controlling power output of the battery cell 41, a second accommodating cavity 221 for receiving the battery cell 41 is formed in the second part 22, and the circuit board 42 is arranged in the first part 21, so that the second accommodating cavity 221 can have a larger accommodating space due to no need of accommodating the circuit board 42 in the second part 22, and then a battery cell with a larger volume (the battery cell with the larger volume is usually large in storage capacity) or more battery cells can be accommodated. The battery cell 41 outputs power to the heating assembly 3 through the circuit board 42, so that the heating assembly 3 generates heat, and the heating temperature may be 150-440 ℃.

Referring to fig. 1-3, the first portion 21 has an insertion opening through which the aerosol-generating article 1 is removably received within the first receiving cavity 211; the heating assembly 3 comprises a heater 31, the heater 31 may be arranged in the first receiving cavity 211, the heater 31 may generate heat by electromagnetic induction under a varying magnetic field, or by the thermal effect of electrical resistance when energized, or radiate infrared light towards the aerosol-generating article 1 when energized, thereby heating the aerosol-generating article 1, such as a cigarette, to volatilize at least one component of the aerosol-generating article 1 to form an aerosol for smoking. The battery cell 41 may be a rechargeable dc battery cell, and may output dc current. In other embodiments, the battery cell 41 may also be a disposable battery, which may not be rechargeable or need not be recharged. When the heater 31 can generate heat by electromagnetic induction under a changing magnetic field, the heating assembly 3 further includes a magnetic field generator (such as an induction coil), and the circuit board 42 is connected to the electric core 41 and the magnetic field generator, and is configured to convert the direct current output by the electric core 41 into an alternating current, so that the magnetic field generator generates a changing magnetic field, and the heater 31 generates heat by electromagnetic induction.

In an alternative embodiment, the dc supply voltage provided by the battery cell 41 is in a range from 2.5V to 9.0V, and the amperage of the dc current provided by the battery cell 41 is in a range from 2.5A to 20A.

The power output by the circuit board 42 may be supplied to the heating assembly 3 as a pulse signal, and the amount of power delivered to the heating assembly 3 may be adjusted by changing the duty cycle or pulse width or pulse amplitude of the power signal.

The heating assembly 3 may comprise a single heater 31, alternatively the heating assembly 3 may comprise more than one heater 31, the heater 31 or heaters 31 may be suitably arranged to heat the aerosol-generating article 1 most effectively, wherein a plurality of heaters 31 may constitute a segmented heating of the aerosol-generating article 1, wherein at least two of the heaters 31 may have different heating patterns or heating efficiencies.

The heater 31 may heat the aerosol-generating article 1 by conduction. The heater 31 may be at least partially in contact with the aerosol-generating article 1 or the aerosol-generating article 1 carrier. Alternatively, heat from the heater 31 may be conducted to the aerosol-generating article 1 by a thermally conductive element.

Alternatively, the heater 31 may heat the aerosol-generating article 1 by convection; alternatively, the ambient air may be heated by at least one of the heaters 31 before passing through the aerosol-generating article 1; alternatively, the heater 31 may heat the aerosol-generating article 1 by radiation.

In one embodiment, the heater 31 may have one or more, power being supplied to the heater 31 until the one or more heaters 31 reach a temperature of between about 150 ℃ and 440 ℃ in order to generate an aerosol from the aerosol-generating article 1.

The aerosol generating device may be a hand-held aerosol generating device.

Further, the aerosol generating device comprises a controller, an insertion detector and a user interface 212 (e.g. a graphical display or a combination of LED indicator lights, etc.) that communicates information about the aerosol generating device to a user.

The insertion detector may detect the presence and characteristics of the aerosol-generating article 1 in proximity to the heater 31 on the heat transfer path and signal the presence of the aerosol-generating article 1 to the controller. The controller may be an electronic component (e.g., a microprocessor MCU, a processor CPU, a single chip, a chip, etc.) disposed on the circuit board, or the controller may be a portion of the circuit board 42 (e.g., a control circuit, etc.). It will be appreciated that the provision of an insertion detector is optional and not necessary.

The controller controls the user interface 212 to display system information such as cell power, temperature, status of the aerosol-generating article 1, number of puffs, other information, or a combination thereof.

Referring to fig. 2-4, the user interface 212 is disposed on the housing 2 of the first portion 21 and faces the circuit board 42 to simplify the electrical connection between the user interface 212 and the circuit board 42.

The controller electrically connects the battery cell 41 and the heater 31, and is configured to control output of current, voltage, or electric power of the battery cell 41, and the like, so that the temperature of the heater 31 can be controlled.

The controller may comprise a programmable microprocessor. In another embodiment, the controller may comprise a special-purpose electronic chip, such as a Field Programmable Gate Array (FPGA) or an Application Specific Integrated Circuit (ASIC). In general, any device capable of providing a signal capable of controlling a heater may be used with the embodiments discussed herein. In one embodiment, the controller is configured to detect a temperature change in the actual temperature of the heating assembly 3 relative to a target temperature to detect a temperature indicative of a user puff event.

The controller may include a storage component, which may include a memory and/or a buffer. The storage assembly may be configured to record changes in the detected airflow or user puff. The storage component may record a count of puffs by the user or the time of each puff. The recorded data may be displayed by the user interface 212 under the call of the controller, or output and displayed by other output interfaces, and when the recorded number of suction ports reaches the total number of suction ports preset in the aerosol-generating article 1, the controller may reset, or clear the recorded number of suction ports, or control the aerosol-generating device to shut down, or control the electrical core to stop supplying power to the heating assembly 3, or prompt the user that the aerosol-generating article has reached the suction limit through sound, light, vibration, or the like.

User suction may be useful for subsequent research and device maintenance and design. The user's suction number data may be transmitted to an external memory or processing device by any suitable data output means. For example, the aerosol generating device may comprise a radio connected to a controller or memory, bluetooth, or a Universal Serial Bus (USB) slot connected to a controller or memory. Alternatively, the aerosol-generating device may be configured to transmit data from the memory to an external memory in the cell charging device whenever the aerosol-generating device is recharged via an appropriate data connection.

Further in alternative implementations, the aerosol-generating article 1 may employ a tobacco-containing material that releases volatile compounds upon heating; or it may be a non-tobacco material that is suitable for electrically heated smoking after heating. The aerosol-generating article 1 may employ a solid substrate comprising one or more of a powder, granules, shreds of fragments, strips or flakes of one or more of vanilla leaves, tobacco leaves, homogenised tobacco, expanded tobacco; alternatively, the aerosol-generating article 1 may contain additional tobacco or non-tobacco volatile flavour compounds to be released when the aerosol-generating article 1 is heated. In some alternative implementations, the aerosol-generating article 1 is produced to have the shape of a conventional cigarette or cigar.

Further in alternative implementations, the aerosol-generating article 1 may be contained in a smoking article. During operation, the smoking article comprising the aerosol-generating article 1 may be fully contained within the aerosol-generating device. In this case, the user may draw on the mouthpiece of the aerosol generating device. The mouthpiece may be any part of the aerosol-generating device that is placed in the mouth of a user so as to inhale directly the aerosol generated by the aerosol-generating article 1 or aerosol-generating device. The aerosol is delivered into the user's mouth via the mouthpiece. Alternatively, during operation, the smoking article comprising the aerosol-generating article 1 may be partially contained in the aerosol-generating device, in which case the user may draw directly on the mouthpiece of the smoking article.

Referring to fig. 4 and 5, the heating assembly 3 may further comprise an insulating layer having a receiving cavity 32 therein, and after the aerosol-generating article 1 enters the first receiving cavity 211 through the insertion opening, the aerosol-generating article is disposed in the receiving cavity 32, and is heated and generates aerosol in the receiving cavity 32. The heat preservation encircles the setting of receiving chamber 32 to keep warm to receiving chamber 32, reduce its heat and run off, thereby realize energy-conservation.

In one embodiment, and with reference to fig. 4 and 5, the heater 31 is a tubular heater with the receiving cavity 32 located inside the tubular heater. In other embodiments, the heater 31 may be a rod, a sheet, etc. located inside the receiving cavity 32 for insertion into the aerosol-generating article 1.

In an alternative embodiment, the heater 31 comprises grade 430 stainless steel (SS 430), or grade 420 stainless steel (SS 420), or an iron-nickel alloy material (such as permalloy) or other magnetically susceptible material that generates heat in a varying magnetic field, such that the heater 31 self-heats and conducts and/or radiates heat to the aerosol-generating article 1 in the varying magnetic field due to the generation of eddy currents and hysteresis to heat the aerosol-generating article 1. Correspondingly, the aerosol generating device further comprises a magnetic field generator, such as an induction coil, for generating a changing magnetic field under alternating current, and the circuit board 42 is connected with the electric core 41 and the induction coil, and can convert the direct current output by the electric core 41 into alternating current, and the frequency of the alternating current is selected to be 80 KHz-400 KHz; more specifically, the frequency may be in the range of approximately 200KHz to 300 KHz.

In an alternative embodiment, the heater 31 is made of or comprises a resistive conductive material such as an iron-chromium-aluminum alloy, a nickel-chromium alloy, a nickel-iron alloy, platinum, tungsten, silver, a conductive ceramic, or the like, such that when conductive, heat is generated by the heating effect of the resistance to heat the aerosol-generating article 1 to volatilize at least one component of the aerosol-generating article 1 to form an aerosol.

In an alternative embodiment, the heater 31 has an infrared electrothermal coating formed on the outer surface of the tubular heater, or on the inner surface of the tubular heater. In other embodiments, the infrared electrothermal coating may be formed on an outer layer of a heater in the form of a rod or sheet or the like for insertion into the interior of an aerosol-generating article.

The infrared electrothermal coating receives electric power to generate heat, and then generates infrared rays with certain wavelength, such as: 8-15 μm far infrared ray. When the wavelength of the infrared light matches the absorption wavelength of the aerosol-generating article, the energy of the infrared light is readily absorbed by the aerosol-generating article.

The infrared electric heating coating is selectively coated on the surface of the heater after fully and uniformly stirring far infrared electric heating ink, ceramic powder and inorganic adhesive, and then is dried and cured for a certain time, wherein the thickness of the infrared electric heating coating is 30-50 mu m; certainly, the infrared electric heating coating can also be formed by mixing and stirring tin tetrachloride, tin oxide, antimony trichloride, titanium tetrachloride and anhydrous copper sulfate according to a certain proportion and then coating the mixture on the outer surface of the substrate; or one of a silicon carbide ceramic layer, a carbon fiber composite layer, a zirconium-titanium oxide ceramic layer, a zirconium-titanium nitride ceramic layer, a zirconium-titanium boride ceramic layer, a zirconium-titanium carbide ceramic layer, an iron-based oxide ceramic layer, an iron-based nitride ceramic layer, an iron-based boride ceramic layer, an iron-based carbide ceramic layer, a rare earth oxide ceramic layer, a rare earth nitride ceramic layer, a rare earth boride ceramic layer, a rare earth carbide ceramic layer, a nickel-cobalt oxide ceramic layer, a nickel-cobalt nitride ceramic layer, a nickel-cobalt boride ceramic layer, a nickel-cobalt carbide ceramic layer or a high-silicon molecular sieve ceramic layer; the infrared electrothermal coating can also be other existing material coatings.

In an embodiment, referring to fig. 4 and 5, the heating assembly 3 may further include a housing 33, and a vacuum interlayer 341 is provided in a wall of the housing 33, the vacuum interlayer 341 constituting at least a portion of the insulation layer.

In another embodiment, which may be seen in fig. 5, the heating assembly 3 may further comprise a housing 33, the housing 33 being located at the periphery of the heater 31, the receiving chamber 32 being located inside the housing 33, an air layer 342 being provided between the heater 31 and the wall of the housing 33, the single-sided thickness of the air layer 342 may be larger than the radius of the aerosol-generating product 1, such that after the aerosol-generating product 1 enters the receiving chamber 32, there is a gap between the wall of the aerosol-generating product 41 and the wall of the housing 33 (if the aerosol-generating product 1 is located inside the tubular heater, there may be a gap between the tubular heater and the wall of the housing 33), which is filled with air, constituting the above-mentioned air layer, i.e. the air layer 342 surrounds the receiving chamber 32. The air layer 342 constitutes at least a part of the heat insulating layer.

In yet another embodiment, as can be seen in fig. 5, a vacuum interlayer 341 is located at the periphery of the air layer 342, and the double insulation of the receiving cavity 32 by the vacuum interlayer 341 and the air layer 342 helps to provide the insulation effect.

Referring to fig. 1, an air inlet hole 213 is formed on the outer shell of the first portion 21, an air flow channel 51 is further disposed inside the first portion 21, one end of the air flow channel 51 is communicated with the air inlet hole 213, and the other end is communicated with the receiving cavity 32, so that the outside air can flow into the air flow channel 51 through the air inlet hole 213, then flow into the receiving cavity 32 through the air flow channel 51, and then enter the aerosol-generating product 1. That is, the airflow passage 51 is arranged in the first section 21, rather than in the second section 22, so that the second section 22 can make the second accommodating chamber 221 have a larger accommodating space due to no need to accommodate the airflow passage 51, and thus can accommodate a battery cell 41 (or a battery cell 41 with a larger electric storage capacity) with a larger volume or accommodate more battery cells 41.

However, since the air flow passage 51 is disposed in the first portion 21, the air flow passage 51 is entirely close to the heater 31, and the air flow passage 51 is short, so that when the high-temperature air in the receiving chamber 32 flows back to the air inlet hole 213 through the air flow passage 51, the air temperature is still high, thereby causing the air inlet hole 213 and the housing 2 around the air inlet hole to be excessively high in temperature. In order to reduce the safety hazard and prevent the air inlet hole 213 and the peripheral housing 2 thereof from having an excessively high temperature, the present application provides a check valve 6 in the air flow channel 51, and only allows air to enter the receiving cavity 32 from the air inlet hole 213 through the check valve 6, and does not allow air to flow back to the air inlet hole 213 from the receiving cavity 32: on one hand, the high-temperature gas can be effectively prevented from reaching the air inlet hole 213, so that the temperature of the air inlet hole 213 and the peripheral shell 2 is too high, and on the other hand, the dissipation of heat inside the shell 2 is reduced by preventing the high-temperature gas from being discharged, so that the heat preservation effect is improved, and the energy conservation is further realized.

In an embodiment, as can be seen in fig. 4-7, the aerosol generating device further comprises a bent tube 5, and the bent tube 5 may be made of a high temperature resistant plastic, or made of metal, or made of ceramic or glass, or made of other high temperature resistant materials.

Referring to fig. 4 and 5, in the embodiment where the heater 31 is a tubular heater, the heating unit 3 further includes a lower cover 36, the lower end of the tubular heater is fitted into the lower cover 36 so as to be fixed to each other, and the lower cover 36 is also fixedly connected to the lower end of the housing 33, so that the lower cover 36 connects the lower end of the tubular heater and the lower end of the housing 33. In one embodiment, referring to fig. 4 and 5, the heating module 3 further includes an upper cover 35, the upper end of the tubular heater is engaged with the upper cover 35 to be fixed to each other, and the upper cover 35 is also fixedly connected to the upper end of the housing 33, so that the upper cover 35 connects the upper end of the tubular heater and the upper end of the housing 33, and the tubular heater is held in the housing 33 by the upper cover 35 and the lower cover 36.

With reference to fig. 4 and 5, the lower end cap 36 has a tubular extension 361 extending axially downwards, into which at least part of the vertical portion 52 of the elbow 5 is fitted, and between the vertical portion 52 and the tubular extension there is a seal, so that the vertical portion 52 and the tubular extension are in sealed connection, preventing the passage of air from the connection between the vertical portion 52 and the tubular extension.

The elbow 5 defines at least part of the air flow passage 51, the elbow 5 includes a vertical portion 52 and a lateral portion 53, the vertical portion 52 extends in the axial direction of the housing 2 (vertical extension), the lateral portion 53 extends perpendicular to the axial direction of the housing 2, i.e., in the lateral direction, the vertical portion 52 defines a first air flow passage 521, the lateral portion 53 defines a second air flow passage 531, the first air flow passage 521 and the second air flow passage 531 are communicated, and air can enter the second air flow passage 531 from the first air flow passage 521 and finally enter the receiving cavity 32. One end of the transverse portion 53 is communicated with the air inlet hole 213, one end of the vertical portion 52 is communicated with the receiving chamber 32, and outside air enters the transverse portion 53 through the air inlet hole 213, then enters the vertical portion, and finally enters the receiving chamber 32.

In an alternative embodiment, there is an air insulating layer between the lateral portion 53 and the heating assembly 3, i.e. the lateral portion 53 and the heating assembly 3 are spaced apart from each other without direct contact, and the gap between the lateral portion 53 and the heating assembly 3 can be filled with air, by which the heating assembly 3 is hindered from transferring heat to the lateral portion 53, thereby helping to reduce the temperature of the lateral portion 53, preventing heat from being transferred to the casing 2 through the lateral portion 53, thereby resulting in a local high temperature of the casing 2.

In particular, as can be seen in fig. 4-6, the lower end cap 36 has a radially extending portion formed to extend radially outwardly from the tubular extension 361, and the lower end cap 36 is connected to the housing 33 by the radially extending portion, which is spaced from the transverse portion 53 to form an air insulating layer. Referring to fig. 4-6, the vertical portion 52 passes through the air insulation layer and communicates with the transverse portion 53.

Further, the lower end of the casing 33 is connected with the radial extending portion, and does not exceed the radial extending portion, so that the air insulation layer is completely outside the casing 33, thereby facilitating heat dissipation of the air insulation layer, and when the heating assembly 3 stops heating, facilitating heat dissipation of the vertical portion 52, thereby facilitating acceleration of reduction of the temperature of the air in the vertical portion 52, and further facilitating acceleration of reduction of the temperature of the air flowing back to the transverse portion 53.

In an alternative embodiment, as can be seen from fig. 6, the transverse length d of the second air flow channel 531 is not greater than 12mm, and may be between 6 and 12mm, for example, 8.5mm, that is, the second air flow channel 531 has a shorter transverse length d, so that the housing 2 may have a smaller transverse size, which helps the aerosol generating device to achieve miniaturization and refinement, thereby improving the experience and freshness of the user. Meanwhile, since the housing 2 may have a small lateral size, resulting in a limited space inside the housing 2, so that the air flow passage 51 disposed only in the first portion 21 may not have an air flow path length sufficient to cool the high temperature air, in the present application, disposing the check valve 6 in the air flow passage 51 may enable the aerosol generating device to have a small lateral size without changing its vertical length, while at the same time, may solve the problem of the backflow of the high temperature air causing the housing 2 around the air intake hole 213 to be too hot to the hands.

In an alternative embodiment, and with reference to fig. 4-6, the one-way valve 6 is disposed in the transverse portion 52 such that the one-way valve 6 is disposed transversely in the airflow passage 5. By disposing the check valve 6 in the lateral portion 52, and close to the air intake hole 213, the check valve 6 can be made as far away as possible from the heater 31 and the high temperature environment around the heater 31, so that the check valve 6 can be prevented from being damaged by high temperature. In other embodiments, the check valve 6 may also be provided in the vertical portion 51.

In an alternative embodiment, reference may be made to fig. 3-5, the one-way valve 6 is arranged laterally in the airflow passage 51, such that the direction of flow of air within the one-way valve 6 is transverse, or such that air exits the one-way valve 6 laterally from the air outlet 614 of the one-way valve 6. In a further embodiment, the one-way valve 6 is arranged laterally in the lateral portion 52, helping to reduce the inner diameter of the airflow channel 51.

With reference to fig. 4 to 9, the one-way valve 6 may be a duckbill valve 61 comprising a mounting portion 612, a base 613 and a lip 611, the outlet 614 of the one-way valve 6 being delimited by a lip 611 of the duckbill valve 61, the inlet of the one-way valve 6 being delimited by the base 613 of the duckbill valve 61, the lip 611 and the mounting portion 612 being connected by the base 613, the lip 611 being held in the air flow channel 51 by the mounting portion 612 or the base 613, the lip 611 being located downstream of the base 613 and the mounting portion 612 in the direction of the air entering the first receiving chamber 211 or the receiving chamber 32.

The duckbill valve 61 is made of rubber, or at least the lip 611 of the duckbill valve 61 is made of rubber, and the lip 611 is flat, so that the air outlet 614 of the duckbill valve 61 is a slit, as shown in fig. 4-7, when suction occurs, because the air pressure inside the receiving chamber 32 is reduced, an air pressure difference exists between the air outlet 614 and the air inlet 615 of the duckbill valve 61, so that the air entering the duckbill valve 61 can push open the slit in the lip 611, the air outlet 614 is opened, and then enters the downstream of the duckbill valve 61 through the lip 611, and finally enters the receiving chamber 32. When the suction is stopped, the high temperature environment causes a high pressure to be formed in the air flow passage 51 downstream of the duckbill valve 61, the high pressure being greater than the atmospheric pressure, so that the internal high pressure presses the side wall of the lip 611 of the duckbill valve 61, the air outlet is closed, the air flow cannot pass through, and the air flow can be prevented from flowing back to the air inlet hole 213.

Since the radial length d of the second air flow channel 531 in the transverse portion 52 is small, the transverse length of the non-return valve 6 must be smaller. Duckbill valve 61 has inside and outside simple structure's characteristic, in the miniaturization, can adopt lower cost to ensure its precision, and duckbill valve 61 can be through integrative injection moulding, and preparation simple process, so check valve 6 adopts duckbill valve 61, can reduction in production cost, can ensure the one-way circulation of air in airflow channel 51 simultaneously, prevents that high temperature air from flowing back to inlet port 213.

In an alternative embodiment, and with reference to figures 4 and 5, the elbow has a first opening 54, the first opening 54 opening onto the transverse portion 53 and being located directly opposite the inlet aperture 213, the lip 611 and base of the one-way valve passing through the first opening into the transverse portion 53. The mounting portion 612 is connected with the transverse portion 53 in a sealing manner, specifically: a part of the transverse portion 53 is fitted in the mounting portion 612, as shown in fig. 5 to 8, the mounting portion 612 may include a first portion 612a, a second portion 612b and a third portion 612c, the first portion 612a connects with the base 613, the first portion 612a and the third portion 612c are spaced from each other, the second portion 612b connects the first portion 612a and the third portion 612c, and a fitting groove is formed between the first portion 612a and the third portion 612c, at least a part of the second portion 612b constitutes a groove bottom of the fitting groove, a part of the transverse portion 53 is fitted in the fitting groove and is in sealing connection with an inner side of the third portion 612c and/or an outer side of the first portion 612a by a seal ring or the like, or is in sealing connection with an inner side of the third portion 612c and/or an outer side of the first portion 612a by interference fit, the second portion 612b has a stop function, and when the second portion 612b abuts against an end of the first opening 54, the one-way valve may be prevented from continuously entering the transverse portion 53, or the second portion 53 b and the third portion 612c are prevented from entering outside of the transverse portion 612c, and the transverse portion 612b, so that the third portion 612c and the transverse portion 612b are exposed outside of the transverse portion 612 c.

In one embodiment, and with reference to fig. 6 and 9, the first portion 612a is located in the transverse portion 53 and has a sealing protrusion 616 thereon for interference fit with the transverse portion 53 to effect a sealed connection. Alternatively, the first portion 612a is located in the lateral portion 53 and is sealingly connected to the lateral portion 53 by a seal such as a gasket.

In one embodiment, the mounting portion 612 may include a first portion 612a and a second portion 612b, excluding the third portion 612c described above, the outer diameter of the second portion 612b being greater than the inner diameter of the lateral portion 53, such that the second portion 612b is stopped by the lateral portion 53 from entering the interior of the lateral portion 53.

In one embodiment, the housing 2 covers the first opening 54, the second portion 612b is located between the elbow 5 and the housing 2, the housing 2 can contact the second portion 612b, or the distance between the housing 2 and the second portion 612b is smaller than the distance of the first portion 612a exiting the first opening 54, so the housing 2 can prevent the check valve 6 from exiting the elbow 5 from the first opening 54.

In an embodiment, a through hole is formed in the housing 2 corresponding to the first opening 54, the shielding cover 23 is disposed on the housing 2, the air inlet hole 213 is disposed on the shielding cover 23, the shielding cover 23 is movably connected to the housing 2, so that the through hole and at least a portion of the second portion 612b can be exposed by pulling the shielding cover 23 out of the through hole or rotating the shielding cover 23, and the check valve 6 can be prevented from exiting the elbow pipe 5 from the first opening 54 when the shielding cover 23 is closed relative to the through hole.

In an embodiment, as can be seen from fig. 6 and 9, the lip 611 of the duckbill valve 61 is flat and is transversely disposed in the curved tube 5, the width of the lip 611 or the air outlet 614 in the transverse direction (or radial direction) is greater than the width of the lip 611 or the air outlet 614 in the vertical direction (or axial direction), so that the air exiting from the air outlet 614 or the slit-shaped air outlet 614 is substantially at the same vertical height, and meanwhile, the temperature of the lip 611 is substantially the same, so as to ensure that the air pressure inside and outside the lip 611 is substantially the same, so as to improve the effect of unidirectional conduction and reverse flow stopping of the duckbill valve 61, and avoid that the air outlet 614 is partially closed due to a small local difference between the air pressure inside and outside, so that part of the hot air enters the duckbill valve 61 through the air outlet 614 and then exits through the air inlet hole 213.

In one embodiment, the duckbill valve 61 has a fool-proof structure thereon to ensure that the lips 611 of the duckbill valve 61 are laterally disposed when installed. Optionally, the third portion 612c is of an opposite-sex structure, or the third portion 612c has two opposite asymmetric ends, or the third portion 612c is disposed on only one side of the second portion 612b, so that the duckbill valve 61 is foolproof through the third portion 612c, that is, the duckbill valve 61 can be assembled with the elbow 5 only in a preset direction due to the third portion 612c, so as to ensure that the lips 611 of the duckbill valve 61 are disposed transversely after the duckbill valve 61 is assembled with the elbow 5. Of course, the duckbill valve 61 may also be secured by other structures thereon, which are not limited herein.

In the embodiment shown in figures 6 and 9, the third portion 612c is disposed on one side of the second portion 612b and is cylindrical, with one end of the third portion 612c connecting the second portion 612b and the other end being abuttable against an outer sidewall of the vertical portion 52 of the elbow 5, thereby further preventing the duckbill valve 61 from entering the elbow 5 excessively. The through hole is formed in the housing 2 corresponding to the third portion 612c, and the third portion 612c can pass through the through hole, and the through hole and the third portion 612c can be in interference fit, so that the through hole and the third portion are mutually fixed, the duckbill valve 51 can be stably kept in the housing 2, or can be stably kept connected with the elbow, and the duckbill valve 61 is prevented from being accidentally separated or loosened.

In one embodiment, the duckbill valve 61 is removably connected to the elbow 5 so that the duckbill valve 61 can be replaced or the duckbill valve 61 removed for cleaning after the oil stain resulting from condensation of the aerosol occludes the outlet 614 of the duckbill valve 61 for extended use.

In order to count the number of suction openings conveniently, an airflow sensor 7 is further provided in the aerosol generating device, and in an alternative embodiment, referring to fig. 4 and 5, the airflow sensor 7 is connected to a controller on the circuit board 42, the airflow sensor 7 is provided in the airflow channel 51, a suction event is detected by checking the flow rate or flow rate of the airflow in the airflow channel 51, when the flow rate or flow rate of the airflow in the airflow channel 51 is greater than a preset threshold value, the controller accumulates the number of suction openings once, and when the accumulated total number of suction openings reaches an upper limit of the preset number of suction openings of the aerosol generating product 1, the controller may control a light or a motor or a buzzer or the like arranged on the aerosol generating device to give a prompt to a user through a light or vibration or sound prompt signal, so as to make the user know that the aerosol generating product 1 is exhausted; alternatively, when the cumulative total number of suction openings reaches the upper limit of the preset number of suction openings of the aerosol-generating article 1, the controller may control the cell 41 to stop supplying power to the heater 31, thereby saving energy.

In an alternative embodiment, which can be seen in fig. 4 and 5, the air flow sensor 7 is located downstream of the one-way valve 6 and opposite the outlet of the one-way valve 6, in the direction of the air flow into the receiving chamber 32. The downstream of the check valve 6 relative to the upstream of the check valve 6, the airflow sensor 7 can avoid the disturbance of the disordered airflow from the air intake hole 213, effectively avoid false detection and disturbance, and improve the detection accuracy. The airflow sensor 7 is arranged right opposite to the air outlet of the one-way valve 6, can accurately sense the change of the airflow at the air outlet of the one-way valve 6, and is beneficial to preventing missing detection, so that the statistics of the number of the suction ports is more accurate.

Referring to fig. 4 and 5, the air flow channel 51 includes a first air flow channel 521 and a second air flow channel 531, the first air flow channel 521 is formed inside the vertical portion 52, the second air flow channel 531 is formed inside the horizontal portion 53, the vertical portion 52 and the horizontal portion 53 are not in the same straight line, and an included angle between the vertical portion 52 and the horizontal portion 53 may be 90 °, but is not limited to the angle, so that the first air flow channel 521 makes a turn with respect to the second air flow channel 531, the air flow fluctuates more at the turn, and the probe of the air flow sensor 7 is disposed at the corner corresponding to the turn, so that the change of the air flow is sensed more easily, and the detection omission is prevented.

Referring to fig. 4 and 5, the first air flow path 521 is located downstream of the second air flow path 531 in a direction in which air enters the first accommodation chamber 211 (i.e., in a direction in which air enters the receiving chamber 32). The corner where the vertical portion 52 and the transverse portion 53 are connected is located downstream of the one-way valve 6, at least the probe of the airflow sensor 7 is facing the one-way valve 6, the airflow sensor 7 thus being able to more accurately detect air ingress and thus suction events.

In order to increase the sensitivity of the airflow sensor 7 to changes in the airflow during suction, the probe of the airflow sensor 7 is spaced from the air outlet 614 of the one-way valve 6 by a small distance, which may be smaller than the inner diameter of the vertical portion 52. In an alternative embodiment, referring to fig. 4 and 5, the transverse portion 53 is shorter in length in the direction perpendicular to the axial direction of the housing 2, i.e., the transverse length is shorter, in-between the probe of the airflow sensor 7 and the air outlet of the one-way valve 6 when the airflow sensor 7 is fixed at one end of the transverse portion 53 and the one-way valve 6 is fixed at the other end of the transverse portion 53.

In an alternative embodiment, which can be seen in fig. 4 and 5, the elbow has a second opening 55, the aerosol generating device further comprises a fixing base 7a, at least part of the airflow sensor 7 is fixed on the fixing base 7a, and the probe of the airflow sensor 7 is exposed out of the fixing base 7 a. The fixing seat 7a is at least partially embedded in the second opening 55, and the fixing seat 7a is hermetically connected with the second opening 55. When the fixing seat 7a and the second opening 55 are fixed to each other, the probe of the airflow sensor 7 is located inside the elbow pipe 5 and is opposite to the air outlet 614 of the check valve 6. Alternatively, the second opening 55 is disposed coaxially with the intake hole 213.

Referring to fig. 4 and 5, the check valve 6 is disposed in the second air flow path 531 and close to the air inlet hole 213, so that the check valve 6 is relatively far from the heater 31 in the air flow path 51, thereby helping to protect the check valve 6, effectively preventing the deterioration thereof, and extending the service life of the check valve 6.

In an embodiment, referring to fig. 3 and 4, the circuit board 42 is arranged inside the first portion 21 side by side in the radial direction of the housing with the heating assembly 3, such that the heating assembly 3 may have a larger axial length, such that the heating assembly 3 may be suitable for aerosol-generating articles 1 of longer length.

Referring to fig. 3 and 4, the circuit board 42 and the airflow passage 51 are arranged side by side in the radial direction of the housing 2 in the first section 21, and the airflow passage 51 and the first accommodation chamber 211 are arranged side by side in the first section 21. The circuit board 42 is vertically disposed in the first portion 21 and has a sufficiently large area to facilitate heat dissipation from the circuitry, controller, etc. thereon.

Referring to fig. 3, 10 and 11, the aerosol generating device further includes a bracket 8, at least a part of the bracket 8 is accommodated in the second accommodating cavity 221, the battery cell 41 is held in the second accommodating cavity 221 by the bracket 8, the bracket 8 is disposed between the battery cell 41 and the housing 2, the battery cell 41 can not swing radially in the second accommodating cavity 221 by the bracket 8, at least one side wall of the bracket 8 has a defect, so that a gap for the conductive member 9 to pass through is formed between the battery cell 41 and the housing 2, and an output pole of the battery cell 41 is electrically connected to the circuit board 41 by the conductive member 9.

In one embodiment, referring to fig. 3, 10 and 11, the bracket 8 is held in part in the second portion 221 and in part extends upwardly into the first portion 211, the circuit board 42 is secured to the bracket 8, and optionally the bracket 8 is positioned between the circuit board 42 and the heating assembly 3.

Referring to fig. 1, 10 and 11, the battery cell 41 is a rechargeable battery cell, the housing 2 of the second portion 22 (i.e., the sidewall of the second portion 22) is provided with a charging socket 10, the housing 2 of the second portion 22 has a charging port 101 therein, a charging plug is inserted into the charging port 101 through the charging socket 10, and the charging port 101 is transversely disposed and electrically connected to the battery cell 41 through the circuit board 42, so that the second accommodating cavity 221 has a larger axial length, and can accommodate battery cells with larger electric storage capacity or a larger number of battery cells.

According to the aerosol generating device, the check valve is arranged in the airflow channel to prevent high-temperature air in the first accommodating cavity from flowing back to the air inlet hole through the check valve, so that the high-temperature air is prevented from being discharged from the air inlet hole, and the air inlet hole and the peripheral shell of the air inlet hole can be effectively prevented from burning hands. Because airflow channel and circuit board all set up in the first portion for the inside of second portion can have bigger space to hold electric core, and then can be suitable for the electric core that has bigger electric storage capacity or hold more electric cores of quantity, helps prolonging the standby of aerosol generating device for a long time.

It should be noted that the preferred embodiments of the present application are shown in the specification and the drawings, but the present application is not limited to the embodiments described in the specification, and further, it will be apparent to those skilled in the art that modifications and variations can be made in the above description, and all such modifications and variations should be within the scope of the appended claims of the present application.

Claims (14)

1. An aerosol generating device, comprising:

the aerosol generating device comprises a shell, a first air inlet and a second air inlet, wherein the shell is internally provided with a first accommodating cavity and an air flow channel, the first accommodating cavity is vertically arranged and is used for accommodating at least part of an aerosol generating product, and the shell is also provided with an air inlet communicated with the air flow channel;

a heating assembly disposed within the housing for heating the aerosol-generating article to produce an aerosol; and

and the one-way valve is transversely arranged in the air flow channel, external air enters the first accommodating cavity through the air inlet hole and the one-way valve, and the air flow in the first accommodating cavity is blocked by the one-way valve and cannot flow back to the air inlet hole.

2. An aerosol-generating device according to claim 1, further comprising an elbow, the airflow passage being defined by the elbow, the elbow comprising a vertically disposed vertical portion and a horizontally disposed transverse portion, at least part of the one-way valve being disposed in the transverse portion, the air inlet aperture communicating with the first receiving chamber sequentially through the transverse portion and the vertical portion.

3. An aerosol generating device according to claim 2, wherein the one-way valve is a duckbill valve comprising a mounting portion and a lip portion;

an air outlet of the check valve is bounded by the lip portion, which is retained in the transverse portion by the mounting portion.

4. An aerosol generating device according to claim 3, wherein the elbow has a first opening, the first opening being disposed directly opposite the inlet aperture;

a part of the lateral portion is fitted in the mounting portion, and the lip portion enters the lateral portion through the first opening; or

The outer diameter of the mounting portion is greater than the inner diameter of the first opening, and at least part of the mounting portion is located outside the transverse portion.

5. An aerosol generating device according to claim 3, wherein the duckbill valve is sealingly connected to the transverse portion; alternatively, the duckbill valve is removably connected to the elbow.

6. An aerosol generating device according to claim 3, wherein the lip is disposed transversely in the elbow such that the lip or an air outlet provided on the lip is wider transversely than vertically when in the elbow.

7. An aerosol generating device according to claim 6, wherein the duckbill valve has a fool-proof configuration such that the lip is disposed laterally when the duckbill valve is assembled with the elbow.

8. An aerosol-generating device according to claim 2, wherein an air insulating layer is provided between the transverse portion and the heating assembly.

9. An aerosol generating device according to claim 2, further comprising an air flow sensor located downstream of the air outlet of the one-way valve;

the airflow sensor is arranged at the corner where the vertical part and the transverse part are connected; or alternatively

The airflow sensor is fixed at one end of the transverse part, and the one-way valve is fixed at the other end of the transverse part.

10. An aerosol generating device according to claim 9, wherein the aerosol generating device further comprises a mounting base to which at least part of the airflow sensor is secured;

the bent pipe is provided with a second opening, and the fixed seat is at least partially embedded in the second opening.

11. An aerosol generating device, comprising:

the aerosol generating device comprises a shell, a first accommodating cavity and an air flow channel, wherein the first accommodating cavity is used for accommodating at least part of an aerosol generating product, the air flow channel comprises a first air flow channel which is vertically arranged and a second air flow channel which is transversely arranged, the shell is also provided with an air inlet hole, and air sequentially passes through the air inlet hole, the second air flow channel and the first air flow channel to enter the first accommodating cavity;

a heating assembly disposed within the housing for heating the aerosol-generating article to produce an aerosol; and

a check valve disposed in the airflow passage;

wherein the second airflow passage has a transverse length of no more than 12mm.

12. The aerosol generating device of claim 11, further comprising a cell, wherein the first receiving cavity is disposed vertically above the cell.

13. The aerosol generating device of claim 12, further comprising a circuit board electrically connecting the heating assembly and the cell, and a bracket extending vertically along the housing, the cell and the circuit board each being retained in the housing by the bracket; and is

Vertically, the first accommodating cavity is positioned above the airflow channel;

in the transverse direction, the circuit board is located on the side of the first accommodating cavity and/or the airflow channel.

14. An aerosol generating device according to claim 11, wherein at least part of the one-way valve is disposed in the second airflow passage.

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