VAPORIZER AND ELECTRONIC VAPORIZATION DEVICE

An atomizer and an electronic atomization device. An atomizer (100) comprises: a liquid storage cavity (12); an atomization assembly, which is in fluid communication with the liquid storage cavity (12) so as to obtain a liquid matrix and heat the liquid matrix to generate aerosol; a first sealing element (70, 70b) at least partially sealing the liquid storage cavity (12); a support (60, 60a, 60b), which is used for supporting the first sealing element (70, 70b), so as to make the first sealing element (70, 70b) at least partially positioned between the support (60, 60a, 60b) and the liquid storage cavity (12), wherein a first through hole (65, 65a, 65b) is provided on the support (60, 60a, 60b); and first air guide elements (80, 90, 80a, 90a, 80b), at least part of which extend into the first through hole (65, 65a, 65b), with a first air channel being defined between the first air guide elements (80, 90, 80a, 90a, 80b) and the first through hole (65, 65a, 65b) or defined by the first air guide elements (80, 90, 80a, 90a, 80b), so as to provide a first flow path for air to enter the liquid storage cavity (12). According to the atomizer (100), the first through hole (65, 65a, 65b) is provided on the support (60, 60a, 60b), and the first air guide elements (80, 90, 80a, 90a, 80b) at least partially arranged in the first through hole (65, 65a, 65b) jointly define an air channel for external air to enter the liquid storage cavity (12), such that when the negative pressure of the liquid storage cavity (12) exceeds a certain threshold value, air is supplemented into the liquid storage cavity (12), so as to relieve the negative pressure of the liquid storage cavity (12).

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the prior application No. 202120273292.1, filed to the China National Intellectual Property Administration on Jan. 29, 2021 and entitled “vaporizer and electronic vaporization device”, and claims the priority of the prior application No. 202121667103.5 filed to the China National Intellectual Property Administration on Jul. 21, 2021 and entitled “vaporizer, electronic vaporization device and sealing element for vaporizer”, the contents of which are incorporated herein by reference.

TECHNICAL FIELD

Embodiments of this application relate to the technical field of electronic vaporization devices, and in particular, to a vaporizer and an electronic vaporization device.

BACKGROUND

Tobacco products (e.g., cigarettes, cigars, etc.) burn tobacco in a using process to generate tobacco smoke. Attempts are made to replace these tobacco-burning products by manufacturing products that release compounds without burning.

An example of such products is a heating device that releases compounds by heating rather than burning materials. For example, the materials may be tobacco or other non-tobacco products, where the non-tobacco products may or may not contain nicotine. As another example, there are aerosol-providing products, e.g., so-called electronic vaporization devices. These devices usually contain vaporizable liquid, and the liquid is heated to be vaporized, so as to generate an inhalable aerosol.

A known electronic vaporization device stores and provides a liquid substrate through a liquid storage cavity, and sucks and transfers the liquid substrate to a heating element for heating and vaporization through a liquid guiding element. With consumption of liquid, the negative pressure in the liquid storage cavity will be gradually increased, making it difficult to suck and transfer the liquid substrate by the liquid guiding element.

SUMMARY

Provided in an embodiment of this application is a vaporizer, configured to vaporize a liquid substrate to generate an aerosol, and including:a liquid storage cavity used for storing the liquid substrate;a vaporization assembly, in fluid communication with the liquid storage cavity to suck the liquid substrate and heat the liquid substrate to generate the aerosol;a first sealing element, at least partially sealing the liquid storage cavity;a support, used for supporting the first sealing element in such a way that the first sealing element is at least partially located between the support and the liquid storage cavity, a first through hole being provided in the support; anda first air guiding element, at least partially extending in the first through hole, and defining first air channels together with the first through hole to provide first flow paths for air to enter the liquid storage cavity.

According to the above vaporizer, by forming the first through hole in the support and defining the air channels for the outside air to enter the liquid storage cavity together with the first air guiding element at least partially arranged in the first through hole, when the negative pressure in the liquid storage cavity exceeds a certain threshold value, the air is replenished into the liquid storage cavity to relieve the negative pressure in the liquid storage cavity.

In a preferred implementation, first grooves extending in an axial direction of the first through hole are provided in a surface of the first air guiding element, and the first air channels are defined between the first grooves and an inner wall of the first through hole.

In a preferred implementation, the first through hole is configured to extend in a longitudinal direction of the vaporizer.

In a preferred implementation, the first air guiding element is configured to be substantially in a column shape.

In a preferred implementation, the first air guiding element includes a first section and a second section in an axial direction; and the first section is close to the liquid storage cavity and has a cross-sectional area greater than that of the second section.

In a preferred implementation, the first air guiding element is flexible.

In a preferred implementation, the support includes a first portion adjacent to the liquid storage cavity in the longitudinal direction of the vaporizer, and a second portion facing away from the first portion, where:the first portion is configured to support the first sealing element;the second portion is configured to at least partially accommodate and hold the vaporization assembly; andthe through hole is arranged to be located in the first portion.

In a preferred implementation, the first through hole is configured to avoid the second portion in the longitudinal direction of the vaporizer.

In a preferred implementation, the first sealing element is provided with first liquid guiding holes for the liquid substrate in the liquid storage cavity to flow towards the vaporization assembly; and the first air channels are provided with air outlet ends close to the liquid storage cavity, and the air outlet ends are located in the first liquid guiding holes.

In a preferred implementation, the vaporizer further includes:a vaporization chamber, providing a space for release of the aerosol, air inlet ends of the first air channels communicating with the vaporization chamber.

In a preferred implementation, the first air guiding element is formed by at least part of the first sealing element extending into the first through hole.

In a preferred implementation, the first groove has a depth of less than2mm.

Further provided in another embodiment of this application is a vaporizer, configured to vaporize a liquid substrate to generate an aerosol, including:a liquid storage cavity used for storing the liquid substrate;a porous body, including a liquid channel penetrating through the porous body in a length direction and being in fluid communication with the liquid storage cavity through the liquid channel to suck the liquid substrate;a heating element, bonded to the porous body and used for heating at least part of the liquid substrate in the porous body to generate the aerosol;a support, used for holding the porous body, the support being provided with a second through hole opposite to the liquid channel; anda second air guiding element, at least partially extending in the second through hole, and defining second air channels together with the second through hole or by itself to provide second flow paths for air to enter the liquid storage cavity.

In a preferred implementation, the second through hole is configured to extend in a longitudinal direction perpendicular to the vaporizer.

In a preferred implementation, the second air guiding element is configured to be substantially in a column shape.

In a preferred implementation, second grooves extending in an axial direction of the second through hole are provided in a surface of the second air guiding element, and the second air channels are defined between the second grooves and an inner wall of the second through hole.

In a preferred implementation, the support includes a holding space, and the porous body is at least partially accommodated and held in the holding space; andthe second through hole is configured to extend between an inner surface of the holding space and an outer surface of the support.

In a preferred implementation, the support includes a first portion adjacent to the liquid storage cavity in the longitudinal direction of the vaporizer, and a second portion facing away from the first portion; wherethe first portion is provided with a first liquid guiding channel in fluid communication with the liquid storage cavity, and a liquid channel of the porous body is in fluid communication with the liquid storage cavity through the first liquid guiding channel;the second portion is configured to at least partially accommodate and hold the porous body; andthe second through hole is formed in the second portion.

In a preferred implementation, the vaporizer further includes:a second sealing element, located between the support and the porous body and configured to wrap at least part of an outer surface of the porous body and avoid the second through hole.

Further provided in yet another embodiment of this application is an electronic vaporization device, including a vaporization device used for vaporizing a liquid substrate to generate an aerosol, and a power supply device supplying power to the vaporization device, the vaporization device including the vaporizer mentioned above.

DETAILED DESCRIPTION

For ease of understanding of this application, this application is illustrated below in more detail in conjunction with accompanying drawings and specific implementations.

Provided in this application is an electronic vaporization device. Reference can be made toFIG.1, the electronic vaporization device includes a vaporizer100storing a liquid substrate and vaporizing the liquid substrate to generate an aerosol, and a power supply assembly200supplying power to the vaporizer100.

In an optional implementation, as shown inFIG.1, the power supply assembly200includes a receiving cavity270provided at an end in a length direction and used for receiving and accommodating at least part of the vaporizer100, and first electrical contacts230at least partially exposed on a surface of the receiving cavity270and used for being electrically connected with the vaporizer100to supply power to the vaporizer100when at least part of the vaporizer100is received and accommodated in the power supply assembly200.

According to the preferred implementation shown inFIG.1, second electrical contacts21are provided on an end of the vaporizer100opposite to the power supply assembly200in the length direction, so that when at least part of the vaporizer100is received in the receiving cavity270, the second electrical contacts21make contact with and abut against the first electrical contacts230to conduct electricity.

A sealing piece260is provided in the power supply assembly200, and at least part of an internal space of the power supply assembly200is separated by the sealing piece260to form the above receiving cavity270. In the preferred implementation shown inFIG.1, the sealing piece260is configured to extend in a cross section direction of the power supply assembly200, and is preferably made of a flexible material such as silicone to prevent the liquid substrate seeping from the vaporizer100to the receiving cavity270from flowing towards components such as a controller220and a sensor250inside the power supply assembly200.

In the preferred implementation shown inFIG.1, the power supply assembly200further includes a battery cell210located at another end facing away from the receiving cavity270in the length direction and used for supplying power; and the controller220provided between the battery cell210and the accommodating cavity, the controller220operably guiding a current between the battery cell210and the first electrical contacts230.

During use, the power supply assembly200includes the sensor250, which is used for sensing an inhalation airflow generated by a suction nozzle cap20of the vaporizer100during inhalation, so that the controller220controls the battery cell210to output the current to the vaporizer100according to a detection signal of the sensor250.

Further, in the preferred implementation shown inFIG.1, a charging interface240is provided in the other end of the power supply assembly200facing away from the receiving cavity270, and used for supplying power to the battery cell210.

FIGS.2to5are schematic structural diagrams of an embodiment of the vaporizer100inFIG.1. The vaporizer100includesa main housing10. As shown inFIGS.2to3, the main housing10is substantially in a flat cylinder shape, and certainly, a hollow interior of the main housing10is a necessary functional device used for storing and vaporizing the liquid substrate. The main housing10has a near end110and a far end120opposite to each other in the length direction. According to requirements for common use, the near end110is configured as an end for a user to inhale the aerosol, and a suction nozzle A for the user to inhale is provided at the near end110. The far end120is used as an end bonded with the power supply assembly200, and the far end120of the main housing10is an opening on which a detachable end cap20is mounted. The opening structure is used for mounting necessary functional components inside the main housing10.

Further, in a specific implementation shown inFIGS.2to4, the second electrical contacts21penetrate into the vaporizer100from a surface of the end cap20, so that at least parts of the second electrical contacts21are exposed outside the vaporizer100, so as to be able to make contact with the first electrical contacts230to conduct electricity. At the same time, the end cap20is further provided with a first air inlet23, which is used for allowing outside air to enter the vaporizer100during inhalation.

Certainly, further referring toFIG.3, assembling grooves22for accommodating the second electrical contacts21are formed in the surface of the end cap20, so that after assembly, the second electrical contacts21are flush with the surface of the end cap20.

Further, referring toFIGS.3to5, the main housing10is internally provided with a liquid storage cavity12used for storing the liquid substrate, and a vaporization assembly used for sucking the liquid substrate from the liquid storage cavity12, and heating and vaporizing the liquid substrate. The vaporization assembly generally includes a capillary liquid guiding element for sucking the liquid substrate, and a heating element bonded to the liquid guiding element. The heating element heats at least part of the liquid substrate in the liquid guiding element to generate the aerosol during power on. In an optional implementation, the liquid guiding element includes flexible fibers such as cotton fibers, non-woven fabrics, glass fiber ropes, etc., or includes a porous material with a microporous structure, such as porous ceramics. The heating element can be bonded to the liquid guiding element through methods such as printing, deposition, sintering, or physical assembly, or wound on the liquid guiding element.

Further, in a preferred implementation shown inFIGS.3to5, the vaporization assembly includes a porous body30used for sucking and transferring the liquid substrate, and a heating element40used for heating and vaporizing the liquid substrate sucked by the porous body30. Specifically,in a schematic cross-sectional structure diagram shown inFIG.5, a vapor-gas transmission pipe11in an axial direction is provided in the main housing10, and the liquid storage cavity12used for storing the liquid substrate is formed in a space between an outer wall of the vapor-gas transmission pipe11and an inner wall of the main housing10. A first end of the vapor-gas transmission pipe11opposite to the near end110communicates with the suction nozzle A, and a second end opposite to the far end120is in airflow connection with a vaporization chamber340defined between the porous body30and the end cap20, so as to transmit the aerosol generated by vaporizing the liquid substrate in the heating element40and released to the vaporization chamber340to the suction nozzle A for inhalation.

Referring to the structure of the porous body30shown inFIGS.3,4and5, the structure of the porous body30can configured to be, but not limited to, substantially in a blocky shape in the embodiment. According to a preferred design of this embodiment, the porous body30includes a vaporization surface310which has an arched shape and faces the end cap20in the axial direction of the main housing10. During use, a side of the porous body30facing away from the vaporization surface310is in fluid communication with the liquid storage cavity12, so as to be able to suck the liquid substrate, then the microporous structure inside the porous body30transfers the liquid substrate to the vaporization surface310to be heated and vaporized to form the aerosol, and the formed aerosol is released or escapes from the vaporization surface310. It can be understood that in some other embodiments, the porous body can be arranged in such a way that the vaporization surface of the porous body faces away from the end cap in the axial direction of the main housing and thus faces towards the suction nozzle. On the structure of the porous body30shown inFIG.3, the vaporization surface310extends in a cross section direction of the main housing10.

Further, referring toFIGS.4and7, the porous body30has the arched shape and is provided with a first side wall31and a second side wall32opposite to each other in a thickness direction, as well as a base part34between the first side wall31and the second side wall32. The first side wall31and the second side wall32extend in a length direction to define a liquid channel33between the first side wall31and the second side wall32, and the liquid channel33is in fluid communication with the liquid storage cavity12to suck the liquid substrate.

Further, referring toFIGS.3to5, in order to assist in mounting and fixing the porous body30and sealing the liquid storage cavity12, the main housing10is further internally provided with a flexible silicone sleeve50, a support60and a flexible sealing element70, which not only seals an opening of the liquid storage cavity12, but also fixes and holds the porous body30inside.

In terms of a specific structure and shape, the flexible silicone sleeve50is substantially in a cylinder shape, is hollow inside for accommodating the porous body30, and sleeves the porous body30in a tight-fit manner.

The rigid support60holds the porous body30sleeved with the flexible silicone sleeve50. In some embodiments, the rigid support60can be substantially in a ring shape with a lower end being an opening, and a holding space64is used for accommodating and holding the flexible silicone sleeve50and the porous body30. On the one hand, the flexible silicone sleeve50can seal a gap between the porous body30and the support60to prevent the liquid substrate from seeping out from the gap between the porous body30and the support60. On the other hand, the flexible silicone sleeve50is located between the porous body30and the support60, which is advantageous for the porous body30to be stably accommodated in the support60to avoid loosening.

The flexible sealing element70is provided between the liquid storage cavity12and the support60, and the shape of the flexible sealing element70is adapted to a cross section of an inner contour of the main housing10, so as to seal the liquid storage cavity12and prevent the liquid substrate from leaking out from the liquid storage cavity12. Further, to prevent shrinkage and deformation of a flexible silicone base53made of a flexible material from affecting sealing tightness, the above support60is accommodated in the flexible sealing element70to support the flexible silicone base53.

After mounting, to ensure smooth transferring of the liquid substrate and output of the aerosol, first liquid guiding holes71for the liquid substrate to flow through is provided on the flexible sealing element70, second liquid guiding holes61are correspondingly provided on the support60, and third liquid guiding holes51are provided on the flexible silicone sleeve50. During use, the liquid substrate in the liquid storage cavity12sequentially passes through the first liquid guiding holes71, the second liquid guiding holes61and the third liquid guiding holes51, flows into the liquid channel33of the porous body30held in the flexible silicone sleeve50, and then is sucked. As shown by arrow R1inFIGS.4and5, the liquid substrate is sucked and transferred to the vaporization surface310for vaporization, and then the generated aerosol will be released into the vaporization chamber340defined between the vaporization surface310and the end cap20.

In the inhalation process, for an output structure of the aerosol, referring toFIGS.3to6, a first insertion hole72for a lower end of the vapor-gas transmission pipe11to insert is provided in the flexible sealing element70, a second insertion hole62is correspondingly provided in the support60, and a first airflow channel63for the vaporization surface310and the second insertion hole62to be in airflow communication is provided on a side of the support60opposite to the main housing10. After mounting, a complete inhalation airflow is shown by arrow R2inFIG.3. The outside air enters the vaporization chamber340via a first air inlet23in the end cap20, carries the generated aerosol to flow from the first airflow channel63to the second insertion hole62, and then is output to the vapor-gas transmission pipe11via the first insertion hole72.

In a preferred implementation shown inFIG.6, the support60includes a first portion611and a second portion612sequentially arranged in a longitudinal direction. The first portion611has a cross-sectional area greater than that of the second portion612. In arrangement, the first portion611is close to the liquid storage cavity12, and the second portion612is close to the end cap20. During use, the flexible sealing element70is at least partially located between the first portion611and the inner wall of the main housing10, and at least partially wraps the first portion611so as to be supported by the first portion611. At the same time, the holding space64is defined by the internal space of the second portion612. The second liquid guiding holes61penetrate from an end face of the first portion611close to the liquid storage cavity12to the second portion612to communicate with the holding space64.

Further, referring toFIGS.5to9, the vaporizer100further includes first air channels defined by the support60and the air guiding element to replenish air to the liquid storage cavity12to relieve or eliminate the negative pressure, as shown by arrow R3inFIGS.5and10.

Through holes65close to the two sides in the width direction are provided in the first portion611of the support60. The through holes65penetrate through the first portion611in the longitudinal direction, and the through holes65avoid the second portion612in the longitudinal direction. Referring toFIG.4, the two through holes65have different shapes, respectively. One of the two through holes65is configured to have a circular cross section, and the other one of the two through holes65is configured to have a square cross section. In some examples, the support60can also serve as a section of the main housing10, or is machined together with the main housing10to be integrally formed, and the support60can be used for defining the liquid storage cavity12.

The first air guiding element80is substantially in a circular column shape, and is assembled in the through hole65with the circular cross section, so as to define a gap between the first air guiding element80and the inner wall of the through hole65to form the corresponding first air channel for the air to enter the liquid storage cavity12.

The second air guiding element90is substantially in a square column shape, and is assembled in the through hole65with the square cross section, so as to define a gap between the second air guiding element90and the inner wall of the through hole65to form the corresponding first air channel for the air to enter the liquid storage cavity12.

In the embodiment, the first air guiding element80and/or the second air guiding element90is flexible and preferably made of a flexible material, such as flexible silicone or an elastic body. In terms of a variable shape and structure, the cross sections of the first air guiding element80and/or the second air guiding element90can further be configured into a star shape, a quincunx shape or a polygon shape. The corresponding through holes65can correspondingly have circular, square and polygonal cross sections, as long as the above first air channels for the air to flow through can be defined between the first air guiding element80and/or the second air guiding element90and the through holes65when the first air guiding element80and/or the second air guiding element90is assembled in the corresponding through hole65.

In other optional embodiments, the first air guiding element80and/or the second air guiding element90can further be rigid and made of a common material, such as hard plastics. In some examples, the through holes65matched with the first air guiding element80and/or the second air guiding element90can also be formed in the flexible sealing piece260.

Further, in a preferred implementation shown inFIG.8, the first air guiding element80is provided with a first section810and a second section820sequentially arranged in an axial direction. The first section810has an outer diameter greater than that of the second section820, and accordingly, during assembly, it is advantageous for the second section820as a pointed end to be inserted or assembled into the corresponding through hole65. In the preferred implementation shown inFIG.8, a length d1of the first section810extending in a longitudinal direction is about 3 mm to 5 mm, and 5 mm is adopted inFIG.8. A length d2of the second section820extending in a longitudinal direction is about 1 to 2 mm, and 1.6 mm is adopted inFIG.8. Preferably, the length of the second section820is less than ½ the length of the first section810.

A plurality of first grooves811surrounding the first section810are provided on an outer side wall of the first section810. The first grooves811extend in a longitudinal direction, and after the first air guiding element80is assembled into the corresponding through hole65, spaces defined between the first grooves811and the inner wall of the corresponding through hole form first air channels. In the preferred implementation shown inFIG.8, the first grooves811have a depth of between 0.5 and 2 mm, and the depth of less than 2 mm can effectively avoid seepage of the liquid substrate caused by excessively large spaces. InFIG.8, the first grooves811have a width of about 2 mm and a depth of about 0.5 mm.

InFIG.9, the second air guiding element90also has a structure substantially approximate to that of the first air guiding element80, and is provided with a third section910and a fourth section920with different cross sections. Second grooves911are provided surrounding the third section910.

Or in other variant implementations, the first grooves811and/or the second grooves911are arranged on the inner wall of the corresponding through hole65. When the columnar first air guiding element80and/or the second air guiding element90is assembled in the corresponding through hole65, the above first air channels are formed between the first grooves811and/or the second grooves911on the inner walls of the trough holes65and the outer surfaces of the first air guiding element80and/or the second air guiding element90. In other variant implementations, longitudinally penetrating through holes with suitable hole diameters are formed in the columnar first air guiding element80and/or the second air guiding element90to construct the above first air channels.

In an assembled state, referring toFIGS.5and10, the through holes65are covered with first liquid guiding holes71of the flexible sealing element70, so that air outlet ends of the first air channels defined between the through holes65and the first air guiding element80/the second air guiding element90close to the liquid storage cavity12are exposed out of the first liquid guiding holes71to be in an open state. During use, air between the second portion612of the support60and the inner wall of the main housing10enters the first air channels as shown by arrow R3inFIG.10, and enters the first liquid guiding holes71via the air outlet ends until it finally enters the liquid storage cavity12.

Further, referring toFIGS.5and6, the air inlet ends of the first air channels defined between the through holes65and the first air guiding element80/the second air guiding element90communicate with the gap between the support60and the inner wall of the main housing10for the air to enter. In more preferred implementations, the gap space between the support60and the inner wall of the main housing10communicates with the vaporization chamber340through capillary trenches66in the outer surface of the support60inFIG.6, so that the gap space between the support60and the inner wall of the main housing10communicates with a space of the vaporization chamber340.

FIGS.11to13show schematic diagrams of second air channels defined by through holes65ain a second portion612aof a rigid support60aand a first air guiding element80a/a second air guiding element90ain another embodiment. Specifically,the through holes65ain the two sides in the width direction are provided in the second portion612aof the rigid support60a.The through holes65apenetrate through a wall of the second portion612ain the width direction.

A substantially cylindrical first air guiding element80ais assembled in one of the through holes65a,and a substantially square second air guiding element90ais assembled in the other one of the through holes65a.Second air channels are defined between first grooves811ain an outer wall of the first air guiding element80a/second grooves911ain an outer wall of the second air guiding element90aand inner walls of the through holes65a,respectively, as shown by arrow R4inFIG.12.

In order to be matched with the above defined second air channels, the through holes65aare opposite to a liquid channel33penetrating through the length of a porous body30ain a width direction. At the same time, third liquid guiding holes51aon a flexible silicone sleeve50aare at least partially located on a side wall in the width direction and are opposite to the liquid channel33and the through holes65ato avoid the through holes65a,thus ensuring that air outlet ends of the second air channels are not sheltered or sealed by the flexible silicone sleeve50a.

In an optional implementation, air inlet ends of the second air channels close to an inner wall of the main housing10can be directly configured to communicate with an outside atmosphere. Or similar to the above first air channels, the air inlet ends of the second air channels are surrounded by a gap space between the second portion612aof the rigid support60aand the main housing10, so that during use, air in the gap space between the second portion612aof the rigid support60aand the main housing10enters the air inlet ends of the second air channels. Similarly, the gap space between the second portion612aof the rigid support60aand the main housing10is in airflow communication with the vaporization chamber340through capillary trenches66ain the outer side wall of the second portion612a.Thus, in the implementation, the air inlet ends of the second air channels is kept in communication with the vaporization chamber340, and air inside the vaporization chamber340enters the liquid storage cavity12via the second air channels to relieve or eliminate the negative pressure in the liquid storage cavity12.

FIGS.14and15show schematic diagrams of defining first air channels in yet another embodiment. In the implementation, a first air guiding element80bis formed by at least part of a flexible sealing element70b.Specifically,a support60bis provided with longitudinally penetrating through holes65bin a first portion611b.a flexible sealing element70bis provided with a first air guiding element80bat least partially extending in a corresponding first liquid guiding hole71bin a longitudinal direction. After assembly and when the flexible sealing element70bwraps the first portion611bof the support60b,the first air guiding element80bstretches into the corresponding through hole65b,so that the first air channels are defined between first grooves811bin an outer side wall of the first air guiding element80band an inner wall of the corresponding through hole65b.

As shown inFIGS.14and15, the first air guiding element80bis coupled to the flexible sealing element70bthrough a connecting arm74b.Certainly, in the preferred embodiment shown in the figures, the first air guiding element80band the connecting arm74bon the flexible sealing element70bare integrally made with the flexible sealing element70bin a molded manner. For example, the first air guiding element80b,the connecting arm74band the flexible sealing element70bare made of a silicone material through a mold to form an integrated structure as shown inFIG.14.

According to a similar implementation, a first air guiding element80aor a second air guiding element90acan also be made on a flexible silicone sleeve50ain a molded manner.

Referring to another embodiment provided byFIGS.16to19, a support60includes a first portion610and a second portion620sequentially arranged in a longitudinal direction. The first portion610is close to a liquid storage cavity12, and the second portion620is close to an end cap20. During use, the flexible sealing element70is at least partially located between the first portion610and the inner wall of the main housing10, and at least partially wraps the first portion610so as to be supported by the first portion610. At the same time, the holding space64is defined by the internal space of the second portion620. The second liquid guiding holes61penetrate from an end face of the first portion610close to the liquid storage cavity12to the second portion620to communicate with the holding space64.

A vaporizer100further includes first air channels defined by the support60and a first sealing element50to replenish air to the liquid storage cavity12to relieve or eliminate the negative pressure, as shown by arrow R3inFIG.19. The specific structure is as follows.

Through holes65close to the two sides in the width direction are provided in the second portion620of the support60. The through holes65penetrate into second liquid guiding holes61in the longitudinal direction. The through holes65avoid a holding space64in the width direction.

The through holes65are located on a side of the support60facing away from the liquid storage cavity12. Certainly, the holding space64is also located on the side of the support60facing away from the liquid storage cavity12, so that the through holes65and the holding space64are staggered in the width direction. The second liquid guiding holes61are located on a side of the support60close to the liquid storage cavity12, and projections of the second liquid guiding holes61in the axial direction at least partially cover the through holes65.

Specifically, as shown inFIGS.17and18, the second liquid guiding holes61have a cross-sectional area greater than that of third liquid guiding holes51. After assembly, the second liquid guiding holes61are at least partially opposite to the through holes65in the longitudinal direction, thus allowing air to directly enter the second liquid guiding holes61. At the same time, the second liquid guiding holes61are at least partially opposite to the third liquid guiding holes51in the longitudinal direction, so as to enable a liquid substrate in the second liquid guiding holes61to directly flow downwards into the third liquid guiding holes51under the action of gravity. The third liquid guiding holes51are at least partially located on a side wall of a main body portion510in the width direction and are opposite to a liquid channel33of a porous body30.

Further, as shown inFIGS.16and17, a plurality of air guiding grooves651extending in the axial direction are provided on inner walls of the through holes65. The sealing element50includes the main body portion510. During assembly, the porous body30is wrapped and surrounded by the main body portion510in the holding space64so as to provide a seal between the support60and the porous body30. The third liquid guiding holes51are formed or located on the main body portion510. The sealing element50further includes air guiding elements80connected with the main body portion510, and the air guiding elements80are substantially in an elongate column shape. During assembly with the support60, the air guiding elements80stretch or extend into the through holes65, and tightly abut against the inner walls of the through holes65, so that spaces of the air guiding grooves651form air channels. When the negative pressure in the liquid storage cavity12exceeds a certain threshold value, air in the vaporization chamber340or outside air enters the second liquid guiding holes61via the air guiding grooves651as shown by arrow R3inFIG.19, and then enters the liquid storage cavity12to relieve or partially eliminate the negative pressure in the liquid storage cavity12.

It should be noted that, preferred embodiments of this application are given in the description of this application and the accompanying drawings thereof. However, this application is not limited to the embodiments described in this description. Further, a person of ordinary skill in the art may make improvements or modifications according to the foregoing illustrations, and all the improvements and modifications shall fall within the protection scope of the appended claims of this application.