CN117397864A - Heater, atomizer, and aerosol-generating device - Google Patents

Abstract

The application discloses a heater, a nebulizer and an aerosol-generating device, the nebulizer comprising a liquid storage chamber for storing a liquid matrix; a porous liquid conducting body in fluid communication with the liquid storage chamber to absorb a liquid matrix; a heating element coupled to the porous liquid conductor for atomizing the liquid matrix; wherein the porous liquid-conducting body is configured to have a hollow tubular structure, the porous liquid comprising a first section, a second section, and a third section arranged in sequence along a longitudinal direction thereof, the second section having a wall thickness greater than a wall thickness of any one of the first section and the second section, and at least a portion of an outer surface of the second section being configured to be capable of direct contact with a liquid matrix. The porous liquid guide body of the atomizer does not need to be provided with liquid guide cotton for liquid guide, so that the transfer efficiency of a liquid matrix is improved.

Description

Heater, atomizer, and aerosol-generating device

The present application refers to the priority of the prior application (application number 202210806823.8, application date: 2022, month 07, 08, invention creation name: heater, atomizer and aerosol generating device).

Technical Field

The embodiment of the application relates to the field of aerosol generating devices, in particular to a heater, an atomizer and an aerosol generating device.

Background

The aerosol generating device comprises an atomizer and a power supply assembly, in the prior art, a tubular ceramic core atomizer exists, the ceramic core atomizer comprises a porous heating body and oil guiding cotton wrapped around the porous heating body, the oil guiding cotton absorbs tobacco tar in a liquid storage cavity and then transfers the tobacco tar to the porous heating body, and meanwhile, the periphery of the porous heating body can be further provided with a sealing effect by wrapping the oil guiding cotton, so that oil leakage is reduced. However, manual operation is needed outside the porous heating body Zhou Baomian, the operation difficulty is high, and the tightness degree of the cotton wrapping is different, so that the oil guiding rate of different atomizers is uneven, and the atomization performance of the atomizers is different. Meanwhile, the ceramic core atomizer needs to be manually wrapped with cotton, and the automatic assembly of the atomizer is further affected.

Disclosure of Invention

In order to solve the problem that the porous heating body of ceramic core atomizer among the prior art needs to carry out artifical cotton package, this application embodiment provides an atomizer, include:

a liquid storage chamber for storing a liquid matrix;

a porous liquid conducting body in fluid communication with the liquid storage chamber to absorb a liquid matrix;

a heating element coupled to the porous liquid conductor for atomizing a liquid matrix absorbed by the porous liquid conductor;

wherein the porous liquid is configured to have a hollow tubular structure, the porous liquid comprising a first section, a second section and a third section arranged in sequence along its longitudinal direction, the second section having a wall thickness greater than the wall thickness of the first and second sections, and at least part of the outer surface of the second section being configured to be capable of direct contact with a liquid matrix.

In the atomizer, the second section of the porous liquid guide is configured to be in direct contact with the liquid matrix, and the step of manual cotton wrapping is reduced because the second section of the porous liquid guide is not required to be transmitted through the oil guide cotton, the liquid matrix directly enters the second section of the porous liquid guide, the transmission rate of the liquid matrix is high, and meanwhile, the wall thickness of the second section of the porous liquid guide which is in direct contact with the liquid matrix is larger, so that the storage capacity of the second section of the porous liquid guide to the liquid matrix can be improved, and the leakage of the liquid matrix is reduced.

In some embodiments, the wall thickness of the second section is greater than 1mm.

In some embodiments, the atomizer further comprises a holder having a receiving cavity in which the porous liquid guide is received, the holder having an aperture disposed therein for guiding the liquid matrix into the receiving cavity for absorption by the porous liquid guide; wherein the porous liquid conductor is positioned relative to the scaffold such that the location of the pores is disposed within the extent of the longitudinal extension of the second section of the porous liquid conductor.

In some embodiments, a first outer step surface is formed between the first and second sections of the porous liquid conductor, and a second outer step surface is formed between the second and third sections of the porous liquid conductor; the atomizer further comprises a sealing element, the first or the second outer step surface being used for positioning the sealing element.

In some embodiments, the sealing element comprises a first sealing element and a second sealing element disposed in a spaced apart relationship, at least a portion of the first sealing element being disposed between an inner wall surface of the receiving cavity and an outer side surface of the third section, at least a portion of the second sealing element being disposed between an inner wall surface of the receiving cavity and an outer side surface of the first section.

In some embodiments, a spacing space is provided between the outer side surface of the second section of porous liquid conducting body and the inner wall of the receiving cavity, the spacing space being for a liquid matrix.

In some embodiments, the absorbent assembly further comprises a wicking element for absorbing leakage fluid; the wicking element is proximate to or in contact with the bottom end of the porous liquid transfer body and/or the wicking element is proximate to or in contact with the top end of the porous liquid transfer body.

In some embodiments, the wicking element is in contact with at least a portion of the surface of the sealing element and at least a portion of the surface of the porous liquid transfer body.

In some embodiments, the wicking element is housed within the receiving chamber and has a vent in longitudinal communication with the inner lumen of the porous liquid guide.

In some embodiments, the atomizer further comprises a support for providing longitudinal support to the wicking element and the porous liquid guide.

In some embodiments, a ventilation channel is formed between the first sealing element and/or the second sealing element and the porous liquid guide, the ventilation channel being used to direct an externally existing gas flow to the liquid storage chamber.

In some embodiments, the sealing element is configured to be gas permeable and capable of retaining liquid to prevent liquid from flowing directly between the sealing element and an inner wall of the receiving cavity.

In some embodiments, the sealing element is made from a fibrous material.

In some embodiments, the fibrous material does not cover the second section of the porous liquid-conducting body or is not visible outside the stent through the pores.

In some embodiments, a flange is provided on the porous conducting body, the flange being used to secure the first sealing element.

In some embodiments, a ventilation channel is provided on the porous conducting body, the ventilation channel extending over a first section of the porous conducting body or the ventilation channel extending over a third section of the porous conducting body.

In some embodiments, a portion of the ventilation channel extends onto the second section of the porous liquid conductor, thereby preventing the first sealing element or the second sealing element from shielding that portion of the ventilation channel.

In some embodiments, the ventilation slots extend in a zig-zag or S-shape over the first or third sections of the porous liquid-conducting body.

In some embodiments, a flange is disposed on the porous conducting body, and a portion of the ventilation channel is disposed on the flange.

In some embodiments, the ventilation slots include a first section of ventilation slots and a second section of ventilation slots in communication, the first section of ventilation slots being located on the flange, the second section of ventilation slots being located on the third section of porous liquid transfer body.

The embodiment of the application also provides a heater for an atomizer, the heater includes porous liquid guide and combines heating element on the porous liquid guide, porous liquid guide has hollow inner chamber, porous liquid guide includes along its longitudinal first section, second section and third section that arrange in proper order, the wall thickness of second section is greater than the wall thickness of first section or third section, and the wall thickness of second section is greater than 1mm.

The embodiment of the application also provides an aerosol generating device, which comprises the atomizer and a power supply assembly for providing electric drive for the atomizer.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

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

FIG. 2 is a cross-sectional view of a nebulizer provided in an embodiment of the application;

FIG. 3 is an exploded view of a nebulizer provided in an embodiment of the present application;

FIG. 4 is a perspective view of a porous liquid guide provided in an embodiment of the present application;

FIG. 5 is a cross-sectional view of an atomizing assembly according to one embodiment of the present disclosure;

FIG. 6 is a perspective view of an atomizing assembly according to one embodiment of the present disclosure with a bracket removed;

FIG. 7 is a perspective view of a porous liquid guide provided in yet another embodiment of the present application;

FIG. 8 is a perspective view of an atomizing assembly according to yet another embodiment of the present disclosure with a bracket removed;

FIG. 9 is a cross-sectional view of an atomizing assembly provided in accordance with yet another embodiment of the present disclosure;

fig. 10 is a cross-sectional view of a nebulizer provided in yet another embodiment of the application.

Detailed Description

In order to facilitate an understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and detailed description.

It should be noted that, in this embodiment of the present application, all directional indicators (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative positional relationship, movement situation, etc. between the components in a specific posture (as shown in the drawings), if the specific posture changes, the directional indicators also change accordingly, where "connection" may be a direct connection or an indirect connection, and "setting", "setting" may be a direct setting or an indirect setting.

Furthermore, the descriptions herein as pertaining to "first," "second," etc. are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

The embodiment of the application provides an aerosol-generating device configured to be electrically driven, comprising a nebulizer 100 and a power supply assembly 200, wherein the power supply assembly 200 mainly comprises a lithium ion battery, and the power supply assembly 200 provides the nebulizer 100 with electrical drive. The atomizer 100 comprises a liquid reservoir 121 for storing a liquid matrix, and an atomizing assembly 20 for atomizing the liquid matrix to generate an aerosol. Depending on the liquid matrix to be atomized by the atomizer 100, the aerosol-generating device is defined as having different use values. When at least two of an atomization aid, a nicotine extract, and a flavor composition are mainly included in the liquid matrix, the aerosol-generating device is mainly used as an electronic cigarette to meet the user's demand for nicotine. When the liquid matrix mainly comprises an atomization aid and an active functional component with a medical care function, the aerosol generating device can be used as a medical instrument, and a user can achieve the health care function by sucking aerosol generated by the aerosol generating device. The aerosol-generating device provided in the embodiments of the present application may use two types of liquid substrates as described above, and is not limited herein.

The atomizer 100 and the power supply assembly 200 may be configured as two separable independent components that are configured for threaded, magnetically attached, or snap-fit connection as in the prior art, wherein the atomizer 100 is configured to be replaceable to replenish the liquid matrix and the power supply assembly 200 is configured for sustainable use. In one example provided herein, referring to fig. 1, a threaded sleeve 131 is provided at an end of the atomizer 100, a threaded groove is provided at one end of the power supply assembly 200, and a threaded connection is made between the two assemblies. And an electrical connection assembly is provided at both the connection end of the atomizer 100 and the connection end of the power supply assembly 200 so that electrical communication is made between the two assemblies after the two assemblies are connected. In alternative examples, the atomizer and power supply assembly may be housed within a single housing, forming an integrated aerosol-generating device, such an aerosol-generating device being relatively small in size and portable.

The power supply assembly 200 may be configured in any manner known in the art and will not be described in detail in the detailed description of the embodiments of the present application. The following mainly describes the internal component structure of the atomizer 100.

In an embodiment of the present application, a generally cylindrical atomizer 100 is provided, and referring to fig. 1 to 3, the atomizer 100 includes a housing, wherein the housing may be formed by combining a plurality of sub-housings, and the housing is divided into three parts along its longitudinal direction from the outside, namely, a suction nozzle 11, a liquid storage jacket 12 and a base 13, and a sealing connection is formed between the suction nozzle 11 and the liquid storage jacket 12, and between the liquid storage jacket 12 and the base 13.

A portion of the interior cavity of the sleeve 12 forms a reservoir 121 for storing the liquid matrix, and in a preferred embodiment, the sleeve 12 is made of a transparent material, such as a transparent plastic material or glass, so that a user can directly observe the remaining amount of liquid matrix within the sleeve 12.

The mouth is mainly in contact with the mouthpiece 11 during use of the aerosol-generating device by the user, so that in a preferred implementation the mouthpiece 11 is made of a food-grade, softer-textured plastic material. The mouthpiece 11 has a mouthpiece opening 110 penetrating in its longitudinal direction, and aerosol is output through the mouthpiece opening 110 to be sucked by a user. The suction nozzle 10 is arranged at one end of the liquid storage sleeve 12, an annular sealing sleeve 111 is arranged between the suction nozzle 10 and the liquid storage sleeve 12, a part of the sealing sleeve 111 is inserted into the inner cavity of the liquid storage sleeve 12, and the top end of the sealing sleeve 111 is longitudinally abutted on the suction nozzle 11. Further, in order to prevent the suction nozzle from being removed from one end of the liquid storage sleeve 12, thereby exposing the end of the liquid storage cavity 121, which is not beneficial to the safe use of the atomizer, an anti-disassembly structure can be further arranged between the suction nozzle and the liquid storage sleeve 12.

The base 13 is disposed at the other end of the liquid storage sleeve 12, and the base 13 is preferably made of a hard plastic material or a metal material. In one example provided herein, the base 13 is made of a metal material, a shallow opening edge is provided at an end portion of the liquid storage sleeve 12 abutted with the base 13, a sealing gasket is provided between the base 13 and the liquid storage sleeve 12, and the sealing gasket is abutted on the shallow opening edge of the liquid storage sleeve 12, so that the end portion of the liquid storage sleeve 12 is sealed. One end of the base 13 is in sealing abutment with the liquid storage sleeve 12, the other end of the base 13 is provided with a threaded sleeve 131, and further, the base 13 is provided with a hollow inner cavity in which an electrode and an insulating ring are arranged.

The core component of the atomizer 100 is an atomizing assembly 20, and referring to fig. 2 and 3, in an embodiment of the present application, the atomizing assembly 20 is configured as a tubular ceramic core atomizing assembly 20, and for a cylindrical atomizer 100, a tubular ceramic core atomizing assembly 20 is more suitable. The ceramic atomizing assembly 20 includes a porous heater including a porous liquid guide 21 and a heating element 22 coupled to the porous liquid guide 21, wherein the porous liquid guide 21 is configured to be in fluid communication with the liquid reservoir 121, a portion of the liquid matrix is stored within the porous liquid guide 21 after the liquid matrix has entered the porous liquid guide 21, and a portion of the liquid matrix is transferred to the heating element 22 via the porous liquid guide 21 and atomized by the heating element 22 to generate an aerosol.

The porous liquid guide 21 has a hollow inner cavity, and the heating element 22 is disposed in the inner cavity of the porous liquid guide 21. In one example, the heating element 22 is configured as a spirally extending heating wire made of a metal material having excellent resistance characteristics such as iron chromium nickel, etc., which is embedded in the inner wall of the porous liquid guide 21 during the molding of the porous liquid guide 21, and the heating element 22 spirally extends substantially in the longitudinal direction of the porous liquid guide 21. In alternative other examples, the heating element 22 may also be configured as a heat generating mesh having a mesh structure.

The atomizing assembly 20 also includes a support 23, which support 23 may be stretch formed from a metallic material. The support 23 has a hollow interior, in one example provided herein, the support 23 has a sufficient length extending longitudinally therealong such that the support 23 is disposed throughout the reservoir 12, and one end of the support 23 is inserted into the interior of the mouthpiece 11 and the other end of the support 23 is inserted into the interior of the base 13. The outer wall of the bracket 23 is provided with a flange 231, the flange 231 longitudinally abuts against the shallow opening edge of the liquid storage sleeve 12, a sealing ring is further arranged between the flange 231 of the bracket 23 and the shallow opening edge of the liquid storage sleeve 12, and the sealing ring is sleeved on the outer wall of the bracket 23, so that sealing is provided between the bracket 23 and the liquid storage sleeve 12.

The support 23 is divided into a plurality of parts along the longitudinal direction thereof, a part of the inner cavity of the support 23 forms a containing cavity 232 for containing the porous liquid guide 21, and the other part of the inner cavity of the support 23 forms an air flow channel which is communicated with the inner cavity of the porous liquid guide 21 in an air flow mode. Wherein the air flow channel formed inside the bracket 23 comprises two parts, namely an air inlet channel and an air outlet channel 16, and an air inlet 132 is arranged on the side wall of the base 13, and the air inlet 132 is communicated with the air inlet channel and used for introducing external air flow into the air inlet channel. The air outlet channel 16 is communicated with the suction nozzle 110, and the heating element 22 generates aerosol to enter the air outlet channel 16 and further escape through the suction nozzle 110. In alternative examples, the portion of the support 23 forming the outlet channel 16 may be configured as an outlet pipe alone, and the outlet pipe may be connected to one end of the support 23.

A hole 233 is provided in the holder 23, and the hole 233 serves to guide the liquid matrix inside the liquid storage chamber 121 into the receiving chamber 232, thereby providing the porous liquid guide 21. The holes 233 are provided at the upper end of the flange 231 of the bracket 23, and in a preferred embodiment, a ring of holes 233 are uniformly spaced apart along the circumference of the sidewall of the bracket 23 so that the liquid medium in the reservoir 121 can enter the receiving chamber 232 through the plurality of holes 233.

In an embodiment of the present application, a porous liquid guiding body 21 with a novel structure is provided, and the porous liquid guiding body 21 is divided into three sections along its longitudinal direction, namely, a first section 211, a second section 212 and a third section 213 in sequence, as shown in fig. 4, wherein the wall thickness of the second section 212 is greater than the wall thickness of the first section 211, and the wall thickness of the second section 212 is also greater than the wall thickness of the third section 213. Wherein the wall thickness of the porous liquid guide 21 is positioned as a distance or thickness in its radial direction from the inner surface of the porous liquid guide 21 to the outer surface of the porous liquid guide 21.

When the porous liquid guide 21 is accommodated in the accommodating cavity 232, the outer surface of the second section 212 is directly contacted with the liquid matrix. After the porous liquid guiding body 21 is positioned relative to the support 23, the position of the holes 233 on the support 23 is within the range of the longitudinal extension of the second section 212 of the porous liquid guiding body 21, so that the liquid matrix in the liquid storage cavity 121 can be directly supplied to the outer surface of the second section 212 of the porous liquid guiding body 21 after entering the interior of the accommodating cavity 232 through the holes 233, further, the outer surface of the second section 212 of the porous liquid guiding body 21 is not wrapped by other components, so that the liquid matrix is gathered on the periphery of the second section 212 of the porous liquid guiding body 21 after entering the interior of the accommodating cavity 232 through the holes of the support 23, and thus the liquid matrix is directly transferred to the second section 212 of the porous liquid guiding body 21, and is further transferred to the first section 211 and the third section 213 of the porous liquid guiding body 21 through the second section 212 of the porous liquid guiding body 21, and is further supplied to the heating element 22.

Since the liquid matrix is in direct contact with the second section 212 of the porous liquid guide 21, the rate at which the liquid matrix is transferred to the porous liquid guide 21 is determined only by the liquid storage capacity of the porous liquid guide 21 itself and the transfer capacity to the liquid matrix. The porous liquid guide 21 is mainly formed by adding a pore-forming agent into a ceramic material, sintering and further molding, so that the porous liquid guide 21 with consistent liquid storage and liquid guide performance can be prepared in batch by controlling the raw materials and the preparation process of the porous liquid guide 21. By controlling the preparation process of the porous liquid guide 21, the liquid guide performance of the mass-produced atomizer 100 can be controlled, so that the uniformity of the liquid guide performance of the atomizer 100 with the above structure is better.

Further, the wall thickness of the second section 212 of the porous liquid guiding body 21 in direct contact with the liquid matrix is configured to be larger than the wall thickness of the first section 211 and the third section 213, and under the condition of the same porosity, the thicker the wall thickness of the porous liquid guiding body 21 is, the stronger the capacity of the porous liquid guiding body 21 for storing the liquid matrix is, so that the second section 212 of the porous liquid guiding body 21 can store more liquid matrix relative to the first section 211 and the third section 213, and therefore, even if no sealing member is arranged on the periphery of the second section 212 of the porous liquid guiding body 21, the liquid storage capacity of the second section 212 of the porous liquid guiding body 21 is stronger, and the leakage-proof performance of the porous liquid guiding body 21 can be effectively improved.

In a preferred embodiment, the wall thickness of the second section 212 of the porous liquid guide 21 is greater than 1mm, and the maximum thickness of the second section 212 of the porous liquid guide 21 is determined according to the size of the porous liquid guide 21 to be disposed in the atomizer 100, and the larger the size of the atomizer 100, the larger the size of the porous liquid guide 21 in general; the greater the fluidity of the liquid matrix in the liquid storage cavity 121, the greater the wall thickness of the porous liquid guiding body 21 will be, so as to improve the liquid storage capacity of the porous liquid guiding body 21 and reduce the liquid leakage; the liquid matrix inside the liquid storage cavity 121 has poor fluidity, and the wall thickness of the porous liquid guide 21 can be relatively small, so as to reduce the transmission resistance of the porous liquid guide 21. The maximum wall thickness of the second section 212 of the porous liquid conductor 21 is thus not particularly limited. In one example provided herein, the second section 212 of the porous conducting body 21 has a wall thickness of 1.5mm, the first section 211 has a wall thickness of 1mm, and the third section 213 has a wall thickness of 1.4mm.

Further, in one example provided herein, referring to fig. 4 and 5, the porous liquid guide 21 is substantially in a regular cylindrical shape, that is, the inner diameter of the first section 211, the inner diameter of the second section 212, and the inner diameter of the third section 213 of the porous liquid guide 21 are substantially the same, so that the second section 212 of the porous liquid guide 21 is disposed convexly with respect to the first section 211, the transition between the first section 211 and the second section 212 forms a first outer step surface 214, and the second section 212 of the porous liquid guide 21 is disposed convexly with respect to the third section 213, and the transition between the second section 212 and the third section 213 forms a second outer step surface 215. Since the accommodating cavity 232 of the bracket 23 is a substantially cylindrical cavity, the porous liquid guide 21 is also substantially cylindrical in shape, and the presence of the first outer step surface 214 and the second outer step surface 215 is beneficial to fixing the porous liquid guide 21 inside the accommodating cavity 232. Wherein the first outer step surface 214 and the second outer step surface 215 may be provided as inclined surfaces instead of being provided as flat surfaces. In alternative other examples, the porous liquid guide 21 may be provided in an irregular cylindrical shape or a polygonal column shape having a hollow inner cavity, that is, the inner diameter of the first section 211, the inner diameter of the second section 212, and the inner diameter of the third section 213 of the porous liquid guide 21 may also be configured differently, which is not particularly limited in the embodiments of the present application.

The porous liquid guide 21 is fixed to the inside of the receiving chamber 232 by means of a sealing member, which may be made of at least one of a flexible silicone material, a fibrous material, and a thermoplastic elastomer (TPE), as shown with reference to fig. 5 and 6.

The sealing members include a first sealing member 31 and a second sealing member 32 disposed at intervals, wherein at least a portion of the first sealing member 31 is disposed between the outer side surface of the third section 213 of the porous liquid guide 21 and the inner wall of the accommodating chamber 232, at least a portion of the second sealing member 32 is disposed between the outer side surface of the first section 211 of the porous liquid guide 21 and the inner wall of the accommodating chamber 232, the first sealing member 31 is for sealing a connection gap between the outer side surface of the third section 213 of the porous liquid guide 21 and the inner wall of the accommodating chamber 232, and the second sealing member 32 is for sealing a connection gap between the outer side surface of the first section 211 of the porous liquid guide 21 and the inner wall of the accommodating chamber 232, thereby enabling the porous liquid guide 21 to be sealed and fixed to the inside of the accommodating chamber 232.

The outer side surface of the first sealing element 31 is arranged protruding with respect to the outer side surface of the second section 212 of the porous liquid guiding body 21, the outer side surface of the second sealing element 32 is arranged protruding with respect to the outer side surface of the second section 212 of the porous liquid guiding body 21, the outer side surface of the first sealing element 31 and the outer side surface of the second sealing element 32 are in abutment with the inner wall of the accommodating cavity 232, so that a space exists between the outer wall surface of the second section 212 of the porous liquid guiding body 21 and the inner wall surface of the accommodating cavity 232, and the space is further used for storing the liquid matrix, thereby facilitating the rapid transfer of the liquid matrix to the porous liquid guiding body 21.

In order to prevent the formation of negative pressure inside the reservoir 121 and thus to hinder the supply of liquid matrix to the porous liquid guide 21, in an embodiment provided herein, a ventilation channel is provided between the first sealing member 31 and the porous liquid guide 21, or between the second sealing member 31 and the porous liquid guide 21, and since an air flow channel is provided inside the holder 23, the ventilation channel communicates with the air flow channel inside the holder 23, so that an air flow can be introduced into the reservoir 121, preventing the formation of negative pressure.

In one embodiment of the present application, a ventilation channel is provided between the first sealing element 31 and the porous liquid guiding body 21, and in a specific implementation, the first sealing element 31 is made of a ventilation material, such as a fiber cotton material, which is capable of allowing a ventilation channel due to its loose porous structure. The fiber cotton material is cut into slices and wrapped and wound on the outer side surface of the third section 213 of the porous liquid guide body 21, or the fiber cotton material is directly sleeved on the outer side surface of the third section 213 of the porous liquid guide body 21 after being prepared into a complete set. Meanwhile, the fiber cotton material has the liquid absorbing capability, so that the first sealing element 31 is made of the fiber cotton material, so that the first sealing element 31 has the liquid absorbing capability and the air exchanging capability, and can guide the air flow to the inside of the liquid storage cavity 121 while effectively sealing the gap between the outer side surface of the third section 213 of the porous liquid guiding body 21 and the accommodating cavity 232. In alternative other examples, the first sealing element 31 may also be made of a waterproof, breathable film material.

The first sealing member 31 substantially covers the outer side surface of the third section 213 of the porous liquid guide 21, and the tip end surface of the first sealing member 31 abuts on the second outer step surface 215 of the porous liquid guide 21. Meanwhile, since the outer side surface of the first sealing element 31 is arranged to be protruded with respect to the outer side surface of the second section 212 of the porous liquid guiding body 21, the air flow escaping through the first sealing element 31 can enter the inside of the liquid storage chamber 121 through the holes 233 on the bracket 23. In a preferred embodiment, the top end surface of the first sealing member 31 is disposed adjacent to the aperture 233 to facilitate the direction of the airflow into the interior of the reservoir 121.

It will be appreciated that in the above example, the first sealing element 31 is made of a gas permeable material, and in alternative examples, the second sealing element 32 provided on the first section 211 of the porous liquid guiding body 21 may be provided as a gas permeable member, that is, the second sealing element 32 is made of a gas permeable material, and the top end surface of the second sealing element 32 is in communication with the gas outlet channel 16 inside the support 23, and the bottom end surface of the second sealing element 32 is provided near the hole 233 of the support 23, so that the gas flow inside the gas outlet channel 16 can be guided into the liquid storage cavity 121.

In a further example, to increase the ventilation capacity of the ventilation channel, a ventilation channel may be provided on the first section 211 or the third section 213 of the porous liquid guide 21, the bottom of which ventilation channel is in communication with the air flow channel inside the support 23, and the top of which ventilation channel is in air flow communication with the liquid storage chamber 121, so that the air flow may further enter the liquid storage chamber 121 through the ventilation channel provided on the porous liquid guide 21.

Further, when the first sealing element 31 is configured as a ventilation component, the second sealing element 32 may be made of a flexible silicone material, and the second sealing element 32 is generally configured as a sealing sleeve, and the second sealing element 32 wraps at least a part of the outer side surface of the first section 211 of the porous liquid guide 21 and the top surface of the porous liquid guide 21, so as to effectively seal a gap at the connection position of the porous liquid guide 21 and the support 23, and prevent leakage of the liquid matrix.

In the above embodiment, the first sealing element 31 is made of air-permeable fiber cotton material, the second sealing element 32 is made of silica gel material, and the top end of the porous liquid guiding body 21 is abutted against the inner wall of the accommodating cavity 232 through the second sealing element 32.

A supporting member 33 is further disposed in the accommodating chamber 232 to longitudinally support the lower end of the porous liquid guide body 21, the supporting member 33 may be made of a hard plastic material or a metal material, and the supporting member 33 is provided with a vent hole 331, and the vent hole 331 is communicated with the air flow channel in the support 23. After the porous liquid guide 21 is mounted in the accommodating chamber 232, the supporting member 33 is riveted to the bottom of the accommodating chamber 232 of the bracket 23, so that the supporting member 33 can support the porous liquid guide 21. A receiving cavity is provided at one end of the base 13, the bottom end portion of the atomizing assembly is received in the receiving cavity, and conductive leads connected to both ends of the heating element 22 are electrically connected to the screw electrode inside the base 13.

In a preferred implementation provided in the present application, a liquid absorbing element 34 is further disposed at the upper end of the supporting member 33, the liquid absorbing element 34 is made of a fiber cotton material or sponge with liquid absorbing and storing capabilities, and the top end surface of the liquid absorbing element 34 is in contact with the bottom end surface of the first sealing element 31 and the bottom end surface of the porous liquid guiding body 21, so that the liquid overflowing from the bottom end surfaces of the first sealing element 31 and the porous liquid guiding body 21 can be effectively absorbed, and the leakage-proof performance of the atomizer 100 is effectively improved. The liquid absorbing member 34 is arranged in a substantially annular shape, and the liquid absorbing member 34 is provided with ventilation holes 341, and the ventilation holes 341 communicate with the ventilation holes 331 of the support member 33 and the inner cavity of the porous liquid guiding body 21, so that the air flow is introduced into the inner cavity of the porous liquid guiding body 21. In a preferred implementation, the vent 341 is sized to be approximately the same as the inner diameter of the porous liquid guide 21, thereby optimizing the leak-proof performance of the atomizer 100 while optimizing the resistance to draw of the atomizer 100.

A further embodiment of the present application provides a novel structure of the porous liquid guide 21, which is shown with reference to fig. 7 to 10, unlike the above-described example, in which the first sealing member 31 and the second sealing member 32 are each made of a flexible silicone material. In order to facilitate the fixing of the first sealing element 31 to the porous conducting body 21, a flange 216 is provided on the porous conducting body 21, wherein a third section 213 is provided between the flange 216 and the second section 212, which flange 216 facilitates the fixing of the first sealing element 31. Specifically, if the first sealing member 32 is configured in a conventional sleeve shape without a flange, the first sealing member 32 is liable to slip off, which is disadvantageous in sealing the gap between the outer side surface of the third section 213 of the porous liquid guide 21 and the inner wall of the accommodation chamber 232. By providing a ledge on the first sealing element 32 and securing the ledge of the first sealing element 32 to the top end surface of the flange 216 of the porous liquid conductor 21, it is facilitated that the first sealing element 32 remains fixed relative to the porous liquid conductor 21.

In one example provided herein, a ventilation channel is provided between the first sealing element 31 and the porous liquid guide 21, and the ventilation channel may be configured such that a ventilation groove 40 is provided on the porous liquid guide 21, the ventilation groove 40 extends from the bottom end of the third section 213 of the porous liquid guide 21 to the second section 212 of the porous liquid guide 21, and the air flow inside the air intake channel of the bracket 23 may be guided to the inside of the liquid storage chamber 121 through the ventilation groove 40 because the outer side surface of the second section 212 of the porous liquid guide 21 is not surrounded by the sealing member.

Referring further to fig. 7, the ventilation groove 40 generally includes three parts, namely, a first ventilation groove 41, a second ventilation groove 42 and a third ventilation groove 43, which are mutually communicated, wherein the first ventilation groove 41 is disposed on the flange 216 of the porous liquid guiding body 21, the first ventilation groove 41 extends longitudinally in a zigzag shape, an S shape or a spiral shape on the flange 216 of the porous liquid guiding body 21, and the first ventilation groove 41 is disposed in a manner that is beneficial to leakage prevention. The initial end of the first stage ventilation slot 41 is located at the bottom end surface of the porous liquid guide 21, and the terminal end of the first stage ventilation slot 41 is configured as a notch 411 provided at the top end of the flange 216 of the porous liquid guide 21, the notch 411 extending substantially transversely to the porous liquid guide 21.

The second section ventilation groove 42 is arranged on the third section 213 of the porous liquid guide 21, the second section ventilation groove 42 extends along the longitudinal direction of the porous liquid guide 21, the second section ventilation groove 42 and the first section ventilation groove 41 are staggered, the second section ventilation groove 42 is communicated with the first section ventilation groove 41 through the notch 411, and the second section ventilation groove 42 and the first section ventilation groove 41 are combined to form a crisscrossed airflow direction, so that the leakage of the liquid matrix through the ventilation groove 40 can be effectively prevented.

The third-stage ventilation groove 43 is disposed on the second stage 212 of the porous liquid guide 21, and the third-stage ventilation groove 43 forms an air flow outlet of the ventilation channel, and since the second stage 212 of the porous liquid guide 21 is not covered by the sealing member, the third-stage ventilation groove 43 is configured as a concave point disposed on the second stage 212 of the porous liquid guide 21, and the air flow is guided through the first-stage ventilation groove 41 and the second-stage ventilation groove 42 and enters the interior of the liquid storage cavity 121 through the third-stage ventilation groove 43.

In the above example, the specific arrangement of the air exchanging channel 40 is described by taking the arrangement of the air exchanging channel 40 on the third section 213 of the porous liquid guiding body 21 as an example, the air exchanging channel structure may be arranged on the first section 211 of the porous liquid guiding body 21, and the air exchanging channel is arranged on the first section 211 of the porous liquid guiding body 21, the starting end of the air exchanging channel is communicated with the air inlet channel, and the tail end of the air exchanging channel is communicated with the liquid storage cavity 121, so that the air flow is guided into the liquid storage cavity 121.

It should be noted that, the ventilation groove structure may be disposed on the first sealing element 31 or the second sealing element 32, but because the first sealing element 31 and the second sealing element 32 are made of flexible silica gel material, the ventilation groove structure is disposed on the flexible silica gel sealing member, so that the ventilation effect is easily affected due to the blocking of the ventilation groove after being extruded, and the ventilation groove 40 is disposed on the porous liquid guiding body 21, and because the porous liquid guiding body 21 is made of hard ceramic material, the ventilation groove 40 is relatively easy to be disposed in the process of forming the porous liquid guiding body 21, and meanwhile, the ventilation effect of the ventilation groove 40 is relatively stable, thereby being beneficial to improving the overall liquid guiding capability and leakage preventing capability of the atomizer.

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 (22)

1. An atomizer, comprising:

a liquid storage chamber for storing a liquid matrix;

a porous liquid conducting body in fluid communication with the liquid storage chamber to absorb a liquid matrix;

a heating element coupled to the porous liquid conductor for atomizing a liquid matrix absorbed by the porous liquid conductor;

wherein the porous liquid guide is configured to have a hollow tubular structure, the porous liquid guide includes a first section, a second section, and a third section arranged in this order in a longitudinal direction thereof, a wall thickness of the second section is larger than a wall thickness of any one of the first section and the second section, and at least a part of an outer surface of the second section is configured to be capable of being in direct contact with a liquid substrate.

2. The atomizer of claim 1, wherein said second section has a wall thickness greater than 1mm.

3. The nebulizer of claim 1 further comprising a housing having a cavity therein, the porous liquid-conducting body being received in the cavity, a hole being provided in the housing for guiding the liquid matrix into the cavity for absorption by the porous liquid-conducting body;

wherein the porous liquid conductor is positioned relative to the scaffold such that the location of the pores is within the extent of the longitudinal extension of the second section of the porous liquid conductor.

4. A nebulizer as claimed in claim 3, wherein a first outer step surface is formed between the first and second sections of the porous liquid-conducting body, and a second outer step surface is formed between the second and third sections of the porous liquid-conducting body;

the atomizer further comprises a sealing element, the first or the second outer step surface being used for positioning the sealing element.

5. The atomizer of claim 4 wherein said sealing means comprises first and second sealing means disposed in spaced relation, at least a portion of said first sealing means being disposed between an inner wall surface of said housing cavity and an outer side surface of said third section, at least a portion of said second sealing means being disposed between an inner wall surface of said housing cavity and an outer side surface of said first section.

6. A nebulizer as claimed in claim 3, wherein a space is provided between the outer surface of the second section of porous liquid conducting body and the inner wall of the receiving chamber, the space being for storing a liquid matrix.

7. The nebulizer of claim 4, further comprising a wicking element for absorbing leakage fluid;

the wicking element is adjacent to or in contact with the bottom end of the porous liquid transfer body or the wicking element is adjacent to or in contact with the top end of the porous liquid transfer body.

8. The nebulizer of claim 7, wherein the wicking element is in contact with at least a portion of the surface of the sealing element and at least a portion of the surface of the porous liquid conducting body.

9. The nebulizer of claim 7, wherein the wicking element is received within the receiving chamber and has a vent in longitudinal communication with the interior cavity of the porous liquid conducting body.

10. The nebulizer of claim 7, further comprising a support for providing longitudinal support to the wicking element and porous liquid conducting body.

11. The nebulizer of claim 5, wherein a ventilation channel is formed between the first sealing element or the second sealing element and the porous liquid guide, the ventilation channel being for directing an external air flow to the reservoir.

12. The nebulizer of claim 4, wherein the sealing element is configured to be gas permeable and capable of retaining liquid to prevent liquid from flowing directly from between the sealing element and an inner wall of the housing chamber.

13. The nebulizer of claim 12, wherein the sealing element is made of a fibrous material.

14. The nebulizer of claim 13, wherein the fibrous material does not cover the second section of the porous liquid-conducting body or is not visible outside the scaffold through the pores.

15. The atomizer of claim 5 wherein said porous fluid conducting body has a flange disposed thereon, said third section being located between said flange and said second section, said flange being adapted to secure said first sealing element.

16. The atomizer of claim 11 wherein a ventilation groove is provided in said porous liquid conductor, said ventilation groove extending over a first section of said porous liquid conductor or said ventilation groove extending over a third section of said porous liquid conductor.

17. The nebulizer of claim 16, wherein a portion of the ventilation channel extends onto the second section of the porous liquid conducting body, thereby preventing the first sealing element or the second sealing element from shielding the portion of the ventilation channel.

18. The atomizer of claim 16 wherein said air exchange slots extend in a zig-zag or S-shape over said first or third sections of said porous liquid conductor.

19. The atomizer of claim 18 wherein said porous fluid guide has a flange disposed thereon, a portion of said air exchange channel being disposed on said flange.

20. The atomizer of claim 19 wherein said air exchange slots comprise a first segment of air exchange slots and a second segment of air exchange slots in communication, said first segment of air exchange slots being located on said flange and said second segment of air exchange slots being located on a third segment of said porous liquid conductor.

21. A heater for an atomizer, the heater comprising a porous liquid conductor and a heating element coupled to the porous liquid conductor, the porous liquid conductor having a hollow interior cavity, the porous liquid conductor comprising a first section, a second section, and a third section disposed in series along a longitudinal direction thereof, the second section having a wall thickness greater than a wall thickness of the first section or the third section, and the second section having a wall thickness greater than 1mm.

22. An aerosol-generating device comprising a nebulizer according to any one of claims 1 to 20 and a power supply assembly providing an electrical drive for the nebulizer.