Atomizer and electronic atomization device

Abstract

An atomizer (100) and an electronic atomization device (1). The electronic atomization device (1) comprises the atomizer (100) and a power supply device (200) mating with the atomizer (100). The atomizer (100) comprises: a housing (10) in which a liquid storage cavity (110) and an aerogel output channel (124) are formed; a heating base (20) provided in the housing (10); a heating body (40) provided in the heating base (20), an airflow through hole (410) communicated with the aerogel output channel (124) being formed in the heating body; and a sealing sleeve (30) sealingly provided between the heating base (20) and the heating body (40). The heating body (40) has an atomization surface (412) and a side circumferential surface (415) adjacent to the atomization surface (412) and surrounding the atomization surface (412); the sealing sleeve (30) comprises a first ring-shaped portion (31) wrapping the side circumferential surface (415); and the end portion of the first ring-shaped portion (31) close to the atomization surface (412) is provided with a pressure relief notch (312) enabling the side circumferential surface (415) to be communicated with the outside atmosphere. Atomized vapor in the heating body (40) can be released through the pressure relief notch (312) to relieve pressure, thereby avoiding liquid leakage during vaping caused by formation of excessive liquid films on an atomization surface (412) due to concentration of relieved pressure on the atomization surface (412).

Description

Atomizers and electronic atomization devices Technical Field

[0001] The present invention relates to the field of atomization technology, and more particularly to an atomizer and an electronic atomization device. Background Art

[0002] An electronic atomization device generally includes an atomizer and a power supply device, wherein the power supply device is used to supply power to the atomizer, and the atomizer is used to store a liquid medium and atomize the liquid medium after being powered on.

[0003] The heating element is the core component of the atomizer, typically consisting of a porous matrix and a heating element. The porous matrix is ​​connected to the atomizer's liquid reservoir, transferring the liquid medium within the reservoir to the atomizing surface through capillary action. The heating element, located on the atomizing surface, heats and atomizes the liquid medium. A common problem with existing electronic atomization devices is that the heating element is prone to leaking liquid through the atomizing surface during heating and atomization. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an atomizer and an electronic atomization device having the atomizer in view of the above-mentioned defects of the prior art, so as to reduce the phenomenon of liquid leakage when the heating element is heated and atomized.

[0005] The technical solution adopted by the present invention to solve the technical problem is to construct an atomizer, comprising:

[0006] a shell having a liquid storage cavity and an air outlet passage formed therein;

[0007] A heating seat is arranged in the housing;

[0008] a heating element, disposed in the heating seat, and having an air flow hole formed therein and communicating with the air outlet channel; and

[0009] A sealing sleeve, sealingly disposed between the heating seat and the heating element;

[0010] The heating element has an atomizing surface and a side surface adjacent to and surrounding the atomizing surface. The sealing sleeve includes a first annular portion wrapped around the side surface. The end of the first annular portion close to the atomizing surface is provided with at least one pressure relief groove connecting the side surface with the outside atmosphere.

[0011] In some embodiments, a plurality of the pressure relief grooves are spaced apart at the end of the first annular portion.

[0012] In some embodiments, the heating body includes a heating element, which is arranged around the air flow hole on the atomizing surface, and a plurality of pressure relief grooves are arranged corresponding to the heating element.

[0013] In some embodiments, the atomizing surface is located at the lower end surface of the heating element.

[0014] The lower end surface of the first annular portion is flush with the atomizing surface, and the at least one pressure relief groove is formed by a depression in the lower end surface of the first annular portion.

[0015] In some embodiments, an air outlet hole is formed on the sealing sleeve to connect the air outlet channel with the air flow hole, and a hole wall surface of the air outlet hole is recessed to form at least one partition groove.

[0016] In some embodiments, a plurality of partition grooves are evenly spaced along the circumference of the hole wall of the air outlet hole.

[0017] In some embodiments, the heating element comprises:

[0018] a liquid-conducting body, the liquid-conducting body comprising the atomizing surface and the side circumferential surface; and

[0019] An extension portion protruding from one end surface of the liquid guiding body away from the atomizing surface,

[0020] The air flow hole axially penetrates the liquid guiding body and the extension portion.

[0021] In some embodiments, the sealing sleeve also includes a second annular portion wrapped around the extension portion, at least one connecting portion connecting the first annular portion and the second annular portion, and an annular flange extending inward from the inner wall surface of one end of the second annular portion away from the first annular portion, and the inner wall surface of the annular flange defines an air outlet hole that connects the air outlet channel with the air flow hole.

[0022] In some embodiments, the sealing sleeve includes a plurality of connecting portions spaced apart in the circumferential direction, and a liquid inlet hole for connecting the liquid storage cavity with the liquid guiding body is formed between two adjacent connecting portions.

[0023] The present invention also provides an electronic atomization device, comprising the above-mentioned atomizer and a power supply device matched with the atomizer.

[0024] The implementation of the present invention has at least the following beneficial effects: the atomized steam in the heating body can be depressurized through the pressure relief groove, preventing the pressure relief from being concentrated on the atomizing surface and causing excessive liquid film to form on the atomizing surface, resulting in suction leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0026] FIG1 is a schematic diagram of the three-dimensional structure of an electronic atomization device in some embodiments of the present invention;

[0027] FIG2 is a schematic diagram of the three-dimensional structure of the atomizer in FIG1 ;

[0028] FIG3 is a schematic diagram of the longitudinal cross-sectional structure of the atomizer shown in FIG2 ;

[0029] FIG4 is a schematic diagram of the exploded structure of the atomizer shown in FIG2 ;

[0030] FIG5 is an AA longitudinal sectional view of a portion of the internal structure of the atomizer in FIG4 ;

[0031] FIG6 is a BB longitudinal cross-sectional view of a portion of the internal structure of the atomizer in FIG4 ;

[0032] FIG7 is a schematic diagram of the exploded structure of part of the internal structure shown in FIG6;

[0033] FIG8 is a schematic diagram of the exploded structure of the internal structure of the part shown in FIG6 from another angle;

[0034] FIG9 is a bottom view of the heating element and the sealing sleeve in FIG8;

[0035] FIG10 is a schematic diagram showing the state of the heating element during heating and atomization. DETAILED DESCRIPTION

[0036] In order to provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings or the orientation or position relationship in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0039] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, a first feature being "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0041] Figure 1 illustrates an electronic atomization device 1 in some embodiments of the present invention. The electronic atomization device 1 includes an atomizer 100 and a power supply 200 coupled to the atomizer 100. The power supply 200 typically includes a battery for powering the atomizer 100 and a control circuit for controlling the heating of the atomizer 100. The atomizer 100 is primarily used to contain a liquid medium and, upon powering it, heat and atomize the liquid medium. The liquid medium includes, but is not limited to, materials used for medical, health, wellness, and cosmetic purposes.

[0042] In some embodiments, the atomizer 100 and the power supply unit 200 can both be roughly cylindrical, and the two can be mechanically and electrically connected together along the axial direction. Furthermore, the atomizer 100 and the power supply unit 200 can be connected together through a detachable method such as a magnetic connection, a threaded connection, a snap connection, etc. It is understandable that in other embodiments, the atomizer 100 and the power supply unit 200 can also be connected together through a non-detachable method. In addition, the cross-sectional shape of the atomizer 100 and / or the power supply unit 200 is not limited to a circle, and can also be other shapes such as an ellipse, a racetrack, or a rectangle.

[0043] As shown in Figures 2 to 9, the atomizer 100 may include a shell 10, a heating seat 20 disposed in the shell 10, a heating element 40 disposed in the shell 10, and a base 50 at least partially disposed in the shell 10. A liquid storage chamber 110 for accommodating a liquid medium and an air outlet channel 124 for outputting an aerosol, which is isolated from the liquid storage chamber 110, are formed in the shell 10. One end of the shell 10 (shown as the upper end in the figure) has an air inlet 141 connected to the air outlet channel 124. The heating element 40 is in liquid-conducting communication with the liquid storage chamber 110 and in air-conducting communication with the air outlet channel 124. When a user draws air at the air inlet 141, the heating element 40 atomizes the liquid medium in the liquid storage chamber 110 to form an aerosol, which then reaches the air inlet 141 through the air outlet channel 124 to be absorbed by the user.

[0044] In some embodiments, the housing 10 may include a liquid storage housing 11, an air duct 12 disposed within the liquid storage housing 11, and a suction nozzle 14 disposed at the upper end of the liquid storage housing 11. The liquid storage housing 11 may be in the form of a circular tube with both ends open, but is not limited to a circular tube. The air duct 12 may be axially disposed within the liquid storage housing 11 and may be coaxially disposed with the liquid storage housing 11, but is not limited to a coaxial arrangement. A discharge channel 120 is formed within the air duct 12, and a circular liquid storage cavity 110 is formed between the outer wall of the air duct 12 and the inner wall of the liquid storage housing 11.

[0045] A suction nozzle 14 is disposed at the upper end of the liquid reservoir housing 11 and covers the upper opening of the liquid reservoir housing 11. An air intake passage 140 is formed axially through the suction nozzle 14. This passage 140 communicates with the outlet passage 120 to form an outlet passage 124. The upper end of the air guide tube 12 is embedded in the air intake passage 140 and seals against the tube wall of the passage 140.

[0046] In some embodiments, the housing 10 may further include a sealing member 13 disposed at the upper end of the liquid storage housing 11. The sealing member 13 may be made of an elastic material such as silicone. The sealing member 13 is at least partially sealed between the inner wall of the liquid storage housing 11 and the outer wall of the air duct 12, and is used to seal the upper end of the liquid storage chamber 110 and ensure airtightness between the liquid storage chamber 110 and the air outlet channel 124.

[0047] It is understood that in other embodiments, the housing 10 is not limited to the specific structure described above. For example, the liquid reservoir housing 11, suction nozzle 14, and air duct 12 may be integrally formed, thereby eliminating the need to assemble the suction nozzle 14 and seal 13 and simplifying the assembly process. Of course, in other embodiments, the liquid reservoir housing 11 and suction nozzle 14 may be integrally formed, while the air duct 12 is provided separately; alternatively, the liquid reservoir housing 11 and air duct 12 may be integrally formed, while the suction nozzle 14 is provided separately.

[0048] The base 50 is arranged at one end of the liquid storage shell 11 away from the suction nozzle 14 (shown as the lower end in the figure). The heating seat 20 cooperates with the base 50 to accommodate and fix the heating element 40. The heating element 40 generally includes a liquid-conducting base 41 and a heating element 42 in contact with the liquid-conducting base 41. The liquid-conducting base 41 has a liquid absorption surface 411 and an atomizing surface 412. The liquid absorption surface 411 is connected to the liquid storage chamber 110 for liquid conduction. The liquid-conducting base 41 absorbs the liquid medium from the liquid storage chamber 110 through the liquid absorption surface 411 and conducts the liquid medium to the atomizing surface 412. The heating element 42 is arranged on the atomizing surface 412, and is used to heat and atomize the liquid medium adsorbed by the liquid-conducting base 41 after power is turned on and heating is performed. The specific structure of the heating element 42 is not limited. For example, it can be a resistive heating film, a metal sheet or a metal mesh.

[0049] In some embodiments, the liquid-conducting matrix 41 can be made of porous ceramic, so that a large number of micropores are formed inside the liquid-conducting matrix 41 with a certain porosity. Through the capillary action of the micropores, the liquid-conducting matrix 41 can absorb and buffer the liquid medium. Of course, in other embodiments, the liquid-conducting matrix 41 can also be made of other porous materials such as natural cotton and polymer materials.

[0050] The shape of the liquid-conducting base 41 is not limited; for example, it can be in various shapes, such as a plate, bowl, column, or tube. In the present embodiment, the liquid-conducting base 41 is hollow and cylindrical, with an air flow hole 410 formed therein. The air flow hole 410 can be coaxially arranged with the liquid-conducting base 41, but is not limited to a coaxial arrangement. The atomizing surface 412 is located at the lower end surface of the liquid-conducting base 41, that is, the heating element 42 is arranged at the lower end surface of the liquid-conducting base 41 to facilitate external electrode connection. The liquid-absorbing surface 411 and the atomizing surface 412 are arranged relative to each other in the axial direction of the liquid-conducting base 41. Of course, in other embodiments, the heating element 42 can also be arranged at other positions on the liquid-conducting base 41, for example, the heating element 42 can also be arranged on the inner wall surface or upper end surface of the liquid-conducting base 41. In other embodiments, the positions of the liquid-absorbing surface 411 and the atomizing surface 412 are also not limited; for example, the liquid-absorbing surface 411 and the atomizing surface 412 can also be arranged adjacent to each other.

[0051] In some embodiments, the liquid-conducting base 41 may include a liquid-conducting body 413 and an extension 414 protruding from one end surface of the liquid-conducting body 413, and the air flow hole 410 axially penetrates the liquid-conducting body 413 and the extension 414. For high-viscosity liquid media with a viscosity greater than or equal to 8000 cp (e.g., 10000 cp) at room temperature, since high-viscosity liquid media have poor fluidity at low temperatures, the liquid film in the air flow hole 410 will continue to accumulate in the hole. Long-term accumulation will cause the air flow hole 410 to be blocked, thereby forming a liquid accumulation blockage problem. By designing the liquid-conducting base 411 as a boss structure, the length of the air flow hole 410 is increased, thereby enhancing the liquid locking capability and preventing the liquid medium in the liquid storage chamber 110 from overflowing into the air flow hole 410 and causing blockage.

[0052] Specifically, in the present embodiment, the extension portion 414 may be in the shape of a circular tube, which may be formed by extending the upper end face of the liquid-conducting body 413 axially upward. The outer contour of the cross section of the liquid-conducting body 413 is roughly D-shaped, and the liquid suction surface 411 and the atomization surface 412 are respectively located at the upper end face and the lower end face of the liquid-conducting body 413. The non-circular outer contour of the cross section can prevent the liquid-conducting body 413 from rotating in the heating seat 20, making the installation and positioning of the liquid-conducting body 413 in the heating seat 20 more reliable. Of course, in other embodiments, the liquid-conducting base 41 is not limited to the above-mentioned specific structure. For example, the extension portion 414 may also be formed by extending downward from the lower end face of the liquid-conducting body 413. For another example, the shape of the outer contour of the cross section of the extension portion 414 may also be non-circular, and the shape of the outer contour of the cross section of the liquid-conducting body 413 may also be circular.

[0053] In some embodiments, the heating element 42 may be disposed around the airflow hole 410 and may be substantially C-shaped. The central axis of the heating element 42 may coincide with the central axis of the airflow hole 410. Furthermore, the heating element 42 may have a petal-like structure to increase the heating area of ​​the heating element 42. Of course, in other embodiments, the heating element 42 may also have other shapes.

[0054] The heating seat 20 may be in the shape of a hollow cylinder, in which a receiving cavity 210 is formed for receiving the heating element 40. Furthermore, the heating seat 20 may also be formed with a lower liquid hole 211 that connects the liquid storage cavity 110 with the heating element 40.

[0055] In some embodiments, the heating base 20 may include a base 21 and a sleeve portion 22 extending upward from the upper end surface of the base 21. The outer diameter and inner diameter of the base 21 may be larger than the outer diameter and inner diameter of the sleeve portion 22, respectively. The sleeve portion 22 may be, but is not limited to, a circular tubular shape, and the inner wall of the sleeve portion 22 defines an air outlet 220. The air flow hole 410, the air outlet 220, and the outlet channel 120 may be connected in sequence from bottom to top.

[0056] The outer wall surface of the seat body 21 can be sealed with the inner wall surface of the liquid storage shell 11 by means of interference fit or the like to seal the liquid storage cavity 110 and prevent liquid leakage. The inner wall surface of the seat body 21 defines a receiving cavity 210, and the heating element 40 can be installed in the receiving cavity 210 and abut against the top wall of the seat body 21. The lower liquid hole 211 can be provided through the top wall of the seat body 21 to connect the liquid absorption surface 411 of the heating element 40 with the liquid storage cavity 110. The shape and number of the lower liquid holes 211 are not limited, and the size of the lower liquid holes 211 can be adjusted according to the size of the heating element 40 or the liquid supply demand.

[0057] In this embodiment, there is one lower liquid hole 211 in an arc shape, which can be coaxially arranged with the air flow hole 410. The lower liquid hole 211 can be arranged on a side close to the heating element 42. The temperature of the heating element 42 will preheat the liquid medium, making the liquid flow smoother.

[0058] In some embodiments, the heating base 20 may further be formed with a ventilation hole 212. Specifically, the ventilation hole 212 may be provided through the top wall of the base body 21. The ventilation hole 212 connects the liquid storage chamber 110 with the outside atmosphere, and is used to balance the pressure in the liquid storage chamber 110, thereby solving the problem of unstable liquid discharge due to excessive negative pressure in the liquid storage chamber 110.

[0059] In some embodiments, the atomizer 100 may further include a sealing sleeve 30 that is sleeved on the heating element 40 and disposed in the receiving chamber 210. The sealing sleeve 30 may be made of an elastic material such as silicone. On the one hand, the sealing sleeve 30 made of an elastic material has good sealing performance. On the other hand, the heating element 40 is pressed against the heating seat 20 through the sealing sleeve 30, which can protect the heating element 40 from being squeezed and crushed during the installation process. The sealing sleeve 30 is also formed with a liquid inlet 320 that connects the lower liquid hole 211 with the heating element 40, an outlet 340 that connects the air flow hole 410 with the outlet 220, and a ventilation channel 311 that connects the ventilation hole 212 with the outside atmosphere.

[0060] The sealing sleeve 30 may include a first annular portion 31 wrapped around the liquid-guiding body 413, a second annular portion 33 wrapped around the extension portion 414, at least one connecting portion 32 connecting the first annular portion 31 and the second annular portion 33, and an annular flange 34 extending inward from the inner wall surface of the upper end of the second annular portion 33.

[0061] The annular flange 34 may be annular, with its inner wall defining an air outlet 340. The inner diameter of the annular flange 34 may be equal to or substantially equal to the inner diameter of the extension 414. The annular flange 34 may be interference-fitted between the upper end surface of the extension 414 and the end wall of the receiving cavity 210, thereby preventing the liquid medium in the liquid storage cavity 110 from overflowing into the air outlet channel 124. In some embodiments, the inner surface of the annular flange 34 (i.e., the wall surface of the air outlet 340) may be recessed to form at least one partition groove 341, which can block the flow of the liquid film on the upper end surface of the liquid guide base 41 during suction and promote the flow of accumulated liquid in the air guide tube 12 toward the upper end surface of the liquid guide base 41. Preferably, there are multiple partition grooves 341, which may be evenly spaced and arranged circumferentially along the inner surface of the annular flange 34. The cross-sectional shape of each partition groove 341 is not limited, for example, it can be a regular or irregular shape such as a triangle, a square, or an arc.

[0062] The partition groove 341 can be a micro-groove structure, which can lock the liquid medium through capillary force to prevent leakage. The capillary force in the liquid-conducting matrix 41 is greater than the capillary force of the partition groove 341, so the liquid-conducting matrix 41 can also back-absorb the liquid medium in the partition groove 341.

[0063] The two lateral sides of the connecting portion 32 are respectively connected to the top of the side wall of the first annular portion 31 and the bottom of the side wall of the second annular portion 33. The connecting portion 32 can be interference fit between the upper end surface of the liquid-conducting body 413 and the end wall surface of the accommodating cavity 210, which is helpful to prevent the liquid medium in the liquid storage cavity 110 from overflowing into the air outlet channel 124. Preferably, there can be multiple connecting portions 32, and the multiple connecting portions 32 can be spaced apart in the circumferential direction of the first annular portion 31, and the liquid inlet hole 320 can be formed between two adjacent connecting portions 32. Multiple connecting portions 32 can ensure that the sealing sleeve 30 and the heating element 40 have sufficient contact sealing area.

[0064] The first annular portion 31 can be sealingly disposed between the outer wall surface of the liquid-guiding body 413 and the inner wall surface of the base 21, and the lower end surface of the first annular portion 31 can be roughly flush with the lower end surface of the liquid-guiding body 413. In some embodiments, at least one pressure relief groove 312 can be formed at the bottom of the first annular portion 31. The pressure relief groove 312 exposes a portion of the liquid-guiding base 41 so that the atomized steam in the liquid-guiding base 41 can be depressurized through the pressure relief groove 312, thereby reducing the risk of liquid film formation in the air flow hole 410. This prevents the accumulation of high-viscosity liquid medium in the air flow hole 410 and the formation of an excessive liquid film on the atomizing surface 412, which can cause suction leakage.

[0065] Specifically, the liquid-conducting base 41 has a lateral surface 415 adjacent to and surrounding the atomizing surface 412. The atomizing surface 412 is located on the lower end surface of the liquid-conducting body 413, and the atomizing surface 412 is located on the outer circumference of the liquid-conducting body 413. The first annular portion 31 is wrapped around the lateral surface 415. The end of the first annular portion 31 near the atomizing surface 412 is provided with a pressure relief groove 312. The pressure relief groove 312 connects part of the lateral surface 415 to the outside atmosphere, allowing the atomized vapor pressure within the liquid-conducting base 41 to be released outward through the pressure relief groove 312, thereby reducing the risk of liquid film formation on the atomizing surface 412 and the air flow hole 410.

[0066] Preferably, a plurality of pressure relief grooves 312 are spaced apart at the bottom of the sidewall of the first annular portion 31. The plurality of pressure relief grooves 312 can be formed by recessing the bottom end surface of the first annular portion 31, so that the bottom of the first annular portion 31 forms a tooth-like structure. The cross-sectional shape of each pressure relief groove 312 is not limited and can be, for example, a regular or irregular shape such as a triangle, square, or arc.

[0067] Preferably, the multiple pressure relief grooves 312 can be arranged corresponding to the heating element 42. By only opening the pressure relief grooves 312 in the area corresponding to the sealing sleeve 30 and the heating element 42, it can ensure that the sealing sleeve 30 and the heating element 42 have sufficient contact area, ensure that they can be assembled intact and stably during the assembly process, and achieve a good pressure relief effect.

[0068] The pressure relief groove 312 can be a micro-groove structure, which can lock the liquid medium through capillary force to prevent leakage. The capillary force in the liquid-conducting matrix 41 is greater than the capillary force of the pressure relief groove 312, so the liquid-conducting matrix 41 can also back-absorb the liquid medium in the partition groove 341 and quickly replenish it to the atomizing surface 412, which is beneficial to prevent dry burning.

[0069] Specifically, as shown in Figure 10, when the heating element 40 is heated and atomized, the temperature inside the liquid-conducting matrix 41 rises, and the flue gas boils to produce a large amount of steam, thereby pushing the liquid medium in the pores of the non-atomization area to flow to other areas of the atomization surface 412; and since there is a large interference fit at the position where the sealing sleeve 30 wraps the liquid-conducting matrix 41, the pressure around the liquid-conducting matrix 41 is not easy to release, resulting in the steam pressure inside the liquid-conducting matrix 41 can only be released to other positions around it, especially mainly through the atomization surface 412 and the air flow hole 410, resulting in excessive liquid film formed on the atomization surface 412 and the air flow hole 410, resulting in suction leakage. In addition, the liquid film formed on the surface of the liquid-conducting matrix 41 is also easily brought into the air flow hole 410 and the air outlet channel 124 by the suction airflow, and the long-term accumulation of high-viscosity liquid medium can easily cause clogging of the holes. By providing a pressure relief groove 312 at a position corresponding to the high-temperature atomization area of ​​the sealing sleeve 30 and the heating element 40, the atomized steam can be decompressed to the surrounding areas of the heating element 40 through the pressure relief groove 312, thereby reducing the risk of liquid film formation on the atomizing surface 412 and the air flow hole 410, and ultimately preventing the atomizing surface 412 and the air flow hole 410 from forming suction leakage and hole blockage due to the accumulation of liquid film.

[0070] As shown in Figures 5 to 8, in some embodiments, a ventilation channel 311 can be formed between the first annular portion 31 and the liquid-conducting matrix 41, with the upper end of the ventilation channel 311 communicating with the ventilation hole 212, and the lower end of the ventilation channel 311 communicating with the lower end of the air flow hole 410. Specifically, the liquid-conducting matrix 41 can be formed by a depression on the inner wall of the first annular portion 31 or the outer wall of the liquid-conducting matrix 41, or can be formed by a depression on both the inner wall of the first annular portion 31 and the outer wall of the liquid-conducting matrix 41. In this way, the ventilation channel 311 can be connected to the liquid-conducting matrix 41, so that the liquid medium in the ventilation channel 311 can be adsorbed by the liquid-conducting matrix 41 and re-atomized, thereby improving the utilization rate of the liquid medium and reducing leakage.

[0071] The base 50 is at least partially disposed within the lower opening of the liquid storage housing 11 and may include, from top to bottom, an embedding portion 53, a base portion 52, and a docking portion 51. The upper end surface of the base portion 52 can abut against the lower end surface of the liquid storage housing 11, and its outer diameter can match the outer diameter of the liquid storage housing 11. The embedding portion 53 may be tubular and extend upward from the upper end surface of the base portion 52. The embedding portion 53 is disposed within the lower opening of the housing 10 and can be embedded within the base 21. The docking portion 51 is tubular and extends downward from the lower end surface of the base portion 52. The outer wall of the docking portion 51 may be provided with external threads for threaded connection with the power supply unit 200. The sidewall of the docking portion 51 may also be provided with at least one air inlet 510 for allowing outside air to enter the air flow hole 410. In some embodiments, there are multiple air inlet holes 160, which may be evenly spaced around the circumference of the docking portion 51.

[0072] In some embodiments, the base 50 can be made of a conductive material such as metal. The atomizer 100 may also include an electrode assembly 70 insulated and inserted into the base 50, and an insulating member 60 disposed between the electrode assembly 70 and the base 50. The base 50 and the electrode assembly 70 are respectively in contact with and conductive to the two poles of the heating element 42. The insulating member 60 can be made of insulating materials such as plastic and silicone to ensure an insulating connection between the electrode assembly 70 and the base 50. The insulating member 60 may also be provided with at least one air inlet duct 610 that connects the air inlet hole 510 with the air flow hole 410. In this embodiment, there are two air inlet ducts 610 and they are symmetrically arranged relative to the central axis of the insulating member 60.

[0073] Specifically, the base 50 and the electrode assembly 70 are respectively in contact with and electrically connected to the circumferential ends of the heating element 42. The base 50 includes a conductive portion 531 that is in contact with and electrically connected to one end of the heating element 42. The conductive portion 531 can be formed by extending inward from the inner wall of one side of the embedded portion 53. The electrode assembly 70 includes a conductive portion 723 that is in contact with and electrically connected to the other end of the heating element 42. The conductive portion 723 and the conductive portion 531 can be roughly located on either side of the embedded portion 53 in the radial direction, so that sufficient space is formed between the conductive portion 723 and the conductive portion 531.

[0074] In some embodiments, the electrode assembly 70 may include an electrode column 71 and an electrode connector 72 connected to the electrode column 71. The electrode column 71 is used to connect to the power supply device 200, and it may be in the shape of a tube with a hollow interior. The electrode connector 72 is used to connect to the heating element 42, and it may include a connecting portion 721 embedded in the upper end of the electrode column 71, an extension portion 722 extending laterally from the upper end of the connecting portion 721, and a conductive portion 723 extending upward from one lateral side of the extension portion 722. It can be understood that in other embodiments, the electrode assembly 70 is not limited to the above-mentioned structural form. For example, the electrode assembly 70 may also include only the electrode column, or the electrode assembly 70 may also include an electrode connector.

[0075] In other embodiments, the base 50 may also be made of insulating material, and two electrode assemblies 70 may be penetrated in the base 50 , and the two electrode assemblies 70 are electrically connected to the two poles of the heating element 42 respectively.

[0076] It can be understood that the above technical features can be used in any combination without limitation.

[0077] The above embodiments only express specific implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several modifications and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. An atomizer, characterized in that: include: A housing (10) having a liquid storage chamber (110) and an air outlet channel (124) formed therein; A heating seat (20) is disposed in the housing (10); A heating element (40) is disposed in the heating seat (20), and is formed with an air flow hole (410) in communication with the air outlet channel (124); and A sealing sleeve (30) is sealingly disposed between the heating seat (20) and the heating element (40); The heating element (40) has an atomizing surface (412) and a side surface (415) adjacent to and surrounding the atomizing surface (412). The sealing sleeve (30) includes a first annular portion (31) wrapped around the side surface (415). The end of the first annular portion (31) close to the atomizing surface (412) is provided with at least one pressure relief groove (312) for connecting the side surface (415) with the outside atmosphere.

2. The atomizer according to claim 1, characterized in that A plurality of pressure relief grooves (312) are provided at intervals at the end of the first annular portion (31).

3. The atomizer according to claim 2, characterized in that The heating body (40) includes a heating element (42), the heating element (42) is arranged around the air flow hole (410) on the atomizing surface (412), and a plurality of pressure relief grooves (312) are arranged corresponding to the heating element (42).

4. The atomizer according to claim 1, characterized in that The atomizing surface (412) is located at the lower end surface of the heating element (40). The lower end surface of the first annular portion (31) is flush with the atomizing surface (412), and the at least one pressure relief groove (312) is formed by a depression in the lower end surface of the first annular portion (31).

5. The atomizer according to claim 1, characterized in that An air outlet hole (340) is formed on the sealing sleeve (30) to connect the air outlet channel (124) with the air flow hole (410), and a hole wall surface of the air outlet hole (340) is recessed to form at least one partition groove (341).

6. The atomizer according to claim 5, characterized in that The hole wall surface of the air outlet hole (340) is provided with a plurality of partition grooves (341) at even intervals along the circumferential direction.

7. The atomizer according to any one of claims 1 to 6, characterized in that: The heating element (40) includes: a liquid-conducting body (413), the liquid-conducting body (413) having the atomizing surface (412) and the side circumferential surface (415); and An extension portion (414) protruding from an end surface of the liquid-guiding body (413) away from the atomizing surface (412) The air flow hole (410) axially penetrates the liquid-guiding body (413) and the extension portion (414).

8. The atomizer according to claim 7, characterized in that The sealing sleeve (30) further includes a second annular portion (33) wrapped around the extension portion (414), at least one connecting portion (32) connecting the first annular portion (31) and the second annular portion (33), and an annular flange (34) extending inward from the inner wall surface of one end of the second annular portion (33) away from the first annular portion (31), wherein the inner wall surface of the annular flange (34) defines an air outlet hole (340) connecting the air outlet channel (124) with the air flow hole (410).

9. The atomizer according to claim 8, characterized in that The sealing sleeve (30) comprises a plurality of connecting portions (32) spaced apart in the circumferential direction, and a liquid inlet hole (320) for connecting the liquid storage cavity (110) with the liquid guide body (413) is formed between two adjacent connecting portions (32).

10. An electronic atomization device, characterized in that: It comprises an atomizer (100) according to any one of claims 1 to 9 and a power supply device (200) matched with the atomizer (100).

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