Atomizer and electronic atomization device

Abstract

The present invention relates to an atomizer and an electronic atomization device, wherein the atomizer is provided with an atomization chamber and comprises: an atomization core for atomizing an aerosol generating matrix to form an aerosol. A base is provided with an air inlet passage connected to the outside. And a sealing member is arranged on the base and has an upper surface arranged facing the atomization core, the sealing member comprises a boss connected to the upper surface and protruding relative to the upper surface, the boss is provided with an air guide hole connecting the atomization chamber and the air inlet passage at the same time, the boss has a liquid guide slope located outside the air guide hole and facing the atomization core; in the direction away from the air guide hole, the distance from the liquid guide slope to the upper surface gradually decreases, and the leaked liquid will fall to the upper surface along the liquid guide slope under the action of its own gravity, thereby preventing the aerosol generating matrix from leaking out of the atomizer through the air inlet passage.

Description

Technical Field

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

[0002] An electronic atomization device usually includes an atomizer and a power supply. When the electronic atomization device stops being used, the oil seeping out of the atomizer or the condensate formed by the liquefaction of the aerosol will leak from the bottom of the atomizer to form leakage liquid. The leakage liquid will enter the power supply and corrode the power supply or even cause the power supply to explode, thereby affecting the service life and safety of the power supply. Summary of the invention

[0003] A technical problem solved by the present invention is how to prevent the leakage of liquid generated by the atomizer.

[0004] An atomizer is provided with an atomizing chamber and comprises:

[0005] An atomizing core, used for atomizing an aerosol-generating matrix to form an aerosol;

[0006] The base is provided with an air intake passage connected to the outside; and

[0007] A sealing member is arranged on the base and has an upper surface arranged facing the atomizer core, the sealing member includes a boss connected to the upper surface and protruding relative to the upper surface, the boss is provided with an air guide hole connecting the atomization chamber and the air inlet channel at the same time, and the boss has a liquid guide slope located outside the air guide hole and facing the atomizer core; along the direction away from the air guide hole, the distance from the liquid guide slope to the upper surface gradually decreases.

[0008] In one embodiment, the base is further provided with a storage cavity, and the storage cavity is used to store the aerosol generating matrix; the sealing member also has a lower surface arranged away from the atomizing core, the air guide hole passes through the lower surface, and the lower surface is provided with a guide groove connected to the air guide hole, and the guide groove guides the aerosol generating matrix entering the air guide hole into the storage cavity.

[0009] In one embodiment, there are multiple guide grooves, and the multiple guide grooves are radially distributed relative to the central axis of the air guide hole.

[0010] In one embodiment, the boss has a side wall surface defining a boundary of the air guide hole, a drainage groove connected to the guide groove is formed on the side wall surface, and an end of the drainage groove away from the guide groove is arranged close to the liquid guide slope.

[0011] In one embodiment, the seal is provided with an open cavity, the boss is at least partially located in the open cavity, the upper surface defines a partial boundary of the open cavity, the upper surface is provided with a through hole, the base includes a positioning column that cooperates with the through hole, and there is a residual gap in the through hole between the positioning column and the seal, and the residual gap connects the storage cavity and the open cavity.

[0012] In one embodiment, the base has a bottom wall surface facing the atomizer core and defining a portion of the storage cavity boundary, the base includes a raised portion at least partially located in the storage cavity, the raised portion is connected to the bottom wall surface and protrudes relative to the bottom wall surface, the raised portion has a free end surface spaced apart from the bottom wall surface, and the air inlet channel passes through the free end surface.

[0013] In one embodiment, the sealing member is sleeved on the base and covers the storage cavity.

[0014] In one of the embodiments, a liquid absorbing member is further included. The liquid absorbing member is located in the storage cavity and abuts against the sealing member. The aerosol generating matrix entering the air guide hole can be absorbed by the liquid absorbing member.

[0015] In one embodiment, the boss further includes at least two raised portions spaced apart along the circumference of the air guide hole, the raised portions protrude toward the atomizer core relative to the liquid guide slope, and the liquid guide slope is located between two adjacent raised portions.

[0016] An electronic atomization device comprises a power source and any one of the above-mentioned atomizers, wherein the atomizer is detachably connected to the power source.

[0017] A technical effect of an embodiment of the present invention is: since the boss protrudes relative to the upper surface, the air guide hole is arranged on the boss, and the boss has a liquid guide slope located outside the air guide hole, and the distance from the liquid guide slope to the upper surface gradually decreases in the direction away from the air guide hole. The aerosol-generating matrix that seeps out of the atomization core will form an exudate, and the aerosol retained in the atomization chamber will form a condensate after liquefaction, and the exudate and the condensate are leakage liquid. When the leakage liquid falls into the liquid guide slope, since the liquid guide slope is inclined downward, the leakage liquid will fall to the upper surface along the liquid guide slope under the action of its own gravity; and at least part of the leakage liquid can eventually be introduced into the storage chamber, thereby preventing the leakage liquid from leaking out of the atomizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of an atomizer provided in an embodiment;

[0019] Figure 2 for Figure 1The atomizer is shown as a schematic diagram of a three-dimensional cross-sectional structure in a first direction;

[0020] Figure 3 for Figure 2 Schematic diagram of the local structure;

[0021] Figure 4 for Figure 1 The atomizer is shown as a schematic diagram of a three-dimensional cross-sectional structure in a second direction;

[0022] Figure 5 for Figure 1 A schematic diagram of the partial structure of the atomizer shown;

[0023] Figure 6 for Figure 5 Schematic diagram of the decomposition structure;

[0024] Figure 7 for Figure 1 A schematic diagram of a three-dimensional cross-sectional structure of a base in the atomizer shown;

[0025] Figure 8 for Figure 1 A schematic diagram of the three-dimensional structure of the sealing element in the atomizer shown;

[0026] Fig. 9 for Figure 8 A schematic diagram of a top view structure;

[0027] Fig.10 for Figure 1 A schematic diagram of a three-dimensional cross-sectional structure of a sealing member in the atomizer shown;

[0028] Fig.11 for Figure 1 A schematic diagram of a planar cross-sectional structure of a sealing member in the atomizer shown;

[0029] Fig.12 A schematic diagram of the three-dimensional structure of an electronic atomization device provided in one embodiment. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0032] See also Figure 1 , Figure 2 and Figure 3 The atomizer 10 provided in one embodiment of the present invention is provided with an atomizing chamber 11, a liquid storage chamber 12 and an air inhalation channel 13. The air inhalation channel 13 connects the outside and the atomizing chamber 11. The end of the air inhalation channel 13 forms a suction nozzle 13a, and the user can inhale the aerosol at the suction nozzle 13a. The liquid storage chamber 12 is used to store an aerosol generating matrix, and the aerosol generating matrix can be a liquid such as oil. The atomizer 10 includes an atomizing core 100, a base 200 and a sealing member 300.

[0033] See also Figure 3 , Figure 4 and Figure 5 In some embodiments, the atomizer core 100 may include a porous ceramic matrix 110 and a heating element. The porous ceramic matrix 110 has a large number of micropores and has an atomization surface 120. The atomization surface 120 may define a portion of the boundary of the atomization chamber 11, and the heating element may be attached to the atomization surface 120. The porous ceramic matrix 110 absorbs liquid from the liquid storage chamber 12 through the capillary action of the micropores. When the heating element is energized to convert electrical energy into thermal energy, the heating element may atomize the liquid on the atomization surface 120 to form an aerosol and discharge it into the atomization chamber 11. When the user draws at the mouthpiece 13a, the aerosol in the atomization chamber 11 will enter the inhalation channel 13 and reach the mouthpiece 13a to be inhaled by the user. Of course, in other embodiments, the atomizer core 100 may include absorbent cotton and a heating wire, the heating wire is wound around the absorbent cotton, the absorbent cotton absorbs liquid from the liquid storage chamber 12, and the heating wire generates heat when powered on to atomize the liquid on the absorbent cotton to form an aerosol discharged into the atomizer chamber 11.

[0034] See also Figure 5 , Figure 6 and Figure 7In some embodiments, a storage cavity 210 and an air inlet channel 220 are provided on the base 200. The base 200 has a bottom wall surface 211 defining a part of the storage cavity 210. The bottom wall surface 211 is disposed facing the atomizer core 100, that is, the bottom wall surface 211 is disposed upward. The base 200 includes a protrusion 230 and a positioning column 240. The number of the positioning columns 240 may be two. The two positioning columns 240 are disposed opposite to each other and are both located outside the storage cavity 210. At least a portion of the protrusion 230 is located in the storage cavity 210. For example, the protrusion 230 may be entirely located in the storage cavity 210, that is, the protrusion 230 has no portion protruding outside the storage cavity 210. The lower end of the protrusion 230 is a fixed end and connected to the bottom wall surface 211. The upper end of the protrusion 230 is a free end. The protrusion 230 protrudes a certain height relative to the bottom wall surface 211 toward the atomizer core 100. The raised portion 230 has a free end surface 231, which is disposed toward the atomizer core 100, and the free end surface 231 is spaced a certain distance from the bottom wall surface 211 in the vertical direction. In other words, the free end surface 231 is located above the bottom wall surface 211, so that the height of the free end surface 231 is higher than the height of the bottom wall surface 211. A portion of the air inlet channel 220 is located in the raised portion 230, and the upper end of the air inlet channel 220 passes through the free end surface 231.

[0035] The air inlet channel 220 includes an air inlet hole 221 and an air vent 222 that are interconnected. The number of the air inlet hole 221 can be one, and the number of the air vent 222 can be multiple, and the diameter of the air inlet hole 221 can be much larger than the diameter of the air vent 222. A part of the air inlet hole 221 is arranged in the protrusion 230 and is connected to the outside. The air vent 222 can be arranged on the protrusion 230 and is located above the air inlet hole 221. The lower end of the air vent 222 is connected to the air inlet hole 221, and the upper end of the air vent 222 passes through the free end surface 231, so that an opening is formed on the free end surface 231, and the opening is recorded as the output port 222a of the entire air inlet channel 220. Obviously, when the user sucks at the mouthpiece 13a, the outside air will enter the air inlet channel 220, and the outside air in the air inlet channel 220 will finally be output from the output port 222a to the outside of the air inlet channel 220.

[0036] The caliber of the output port 222a can be about 0.1 mm. When the liquid dripping on the free end surface 231 flows into the output port 222a, the liquid in the output port 222a will form surface tension due to the small caliber of the output port 222a. Under the hindering effect of the surface tension, the liquid can be prevented from entering the vent 222 from the output port 222a, and the liquid can be prevented from leaking out of the entire atomizer 10 through the air inlet 221, thereby improving the anti-leakage capability of the atomizer 10 to a certain extent. Of course, since the fluidity of the gas is higher than the fluidity of the liquid, the output port 222a and the entire air vent 222 will not constitute any obstruction to the flow of the gas, thereby ensuring that the gas in the entire air inlet channel 220 can be smoothly output from the output port 222a. At the same time, although the diameter of the output port 222a is small, the number of the output ports 222a is large, which can reduce the flow resistance of the external gas in the air inlet channel 220 when the user inhales, thereby reducing the user's suction force and the suction resistance of the atomizer 10.

[0037] The free end surface 231 may be a mushroom-shaped curved surface structure, that is, from the center to the edge of the free end surface 231, the distance between the free end surface 231 and the bottom wall surface 211 gradually decreases from the center outward. In short, the free end surface 231 is high in the center and low at the edge, so that the free end surface 231 is tilted downward as a whole. Therefore, when liquid drops on the free end surface 231, it can be prevented from staying on the free end surface 231 for a long time, ensuring that the liquid quickly falls from the free end surface 231 to the bottom wall surface 211 under the action of its own gravity, so that the liquid is stored in the space set around the protrusion 230 of the storage cavity 210.

[0038] Since the output port 222a is located on the free end surface 231, and the free end surface 231 is higher than the bottom wall surface 211 by a certain distance, the storage chamber 210 can store a certain amount of liquid, ensuring that the height of the liquid level in the storage chamber 210 is difficult to reach the height of the free end surface 231, preventing the liquid in the storage chamber 210 from flooding the free end surface 231, and preventing the liquid in the storage chamber 210 from leaking out of the atomizer 10 through the air inlet channel 220. Of course, since the output port 222a will generate surface tension that hinders the flow of liquid, even if the liquid in the storage chamber 210 just overflows or even floods the output port 222a, it is difficult for the liquid in the storage chamber 210 to quickly leak out of the atomizer 10 through the air inlet channel 220 in a short time.

[0039] See also Figure 8 , Fig. 9 and Fig.10In some embodiments, the seal 300 can be supported by a silicone material and is located below the atomizer core 100. The seal 300 has an upper surface 310 and a lower surface 320 facing opposite directions. For example, the upper surface 310 faces upward and faces the atomizer core 100, and the lower surface 320 faces and faces away from the atomizer core 100. The seal 300 is provided with an open cavity 311 and a through hole 312. The upper surface 310 defines a part of the boundary of the open cavity 311, and the upper surface 310 also defines a part of the boundary of the atomizer chamber 11. In fact, when the atomizer 10 is assembled, the atomizer chamber 11 may include at least a part of the open cavity 311. At least a part of the boss 330 is located in the open cavity 311, for example, the boss 330 may be completely located in the open cavity 311. The boss 330 protrudes a certain height relative to the upper surface 310 toward the atomizer core 100, and the through hole 312 penetrates both the upper surface 310 and the lower surface 320, so that the through hole 312 is connected to the open cavity 311. When the seal 300 is installed on the base 200, a part of the seal 300 is sleeved outside the base 200, and the positioning column 240 is inserted into the through hole 312. The positioning column 240 plays a positioning role in the installation of the seal 300, and the seal 300 covers the storage cavity 210 of the base 200. Figure 4 , the positioning column 240 and the through hole 312 can form a clearance fit, for example, there is a large clearance between the positioning column 240 and the through hole 312, so that the storage cavity 210 is connected to the open cavity 311 through the remaining gap 312a in the through hole 312. At this time, if there is liquid in the open cavity 311, the liquid can flow into the storage cavity 210 through the remaining gap 312a of the through hole 312. In other embodiments, the positioning column 240 and the through hole 312 can form an interference fit, that is, the positioning column 240 completely blocks the through hole 312, so that the storage cavity 210 cannot be connected to the open cavity 311 through the through hole 312. At this time, even if there is liquid in the open cavity 311, the liquid cannot flow into the storage cavity 210 through the through hole 312.

[0040] See also Fig.10 and Fig.11The boss 330 is provided with an air guide hole 340, which is connected to the atomizing chamber 11 and the air inlet channel 220 at the same time. The air guide hole 340 has an opening 343 on the boss 330, and the opening 343 allows gas to flow out of the air guide hole 340 and enter the atomizing chamber 11. Obviously, the height of the opening 343 is higher than the height of the upper surface 310. The boss 330 has a liquid guide slope 331, which is located outside the air guide hole 340 and faces upward and toward the atomizing core 100. The boss 330 also includes at least one raised portion 332. There are multiple raised portions 332, and the multiple raised portions 332 are arranged at intervals along the circumference of the air guide hole 340. The liquid guide slope 331 is connected between two adjacent raised portions 332. The raised portion 332 protrudes a certain height toward the atomization core 100 relative to the liquid guide slope 331, so that the raised portion 332 and the liquid guide slope 331 form a pleated structure. In layman's terms, the boss 330 can be abstracted as a mountain, the raised portion 332 represents the peak, and the liquid guide slope 331 represents the valley. In the direction away from the air guide hole 340, the distance from the liquid guide slope 331 to the upper surface 310 gradually decreases, that is, the relative height of the liquid guide slope 331 gradually decreases. In other words, the liquid guide slope 331 is a downwardly inclined slope.

[0041] The lower end of the air guide hole 340 penetrates the lower surface 320 of the sealing member 300 to form an input port 342. The external air output from the output port 222a of the air inlet passage 220 enters the air guide hole 340 through the input port 342. Figure 2 Therefore, when the user draws air at the mouthpiece 13a, the external air enters the atomizing chamber 11 through the air inlet 221, the air vent 222 and the air guide hole 340 in sequence to carry the aerosol. The aerosol carried by the external air from the atomizing chamber 11 then reaches the mouthpiece 13a through the air inhalation channel 13 to be inhaled by the user. Figure 2 The dotted arrow in the middle indicates the flow trajectory of the gas. The orthographic projection of the input port 342 on the base 200 can be located outside the output port 222a, that is, the input port 342 and the output port 222a are staggered. In this case, the liquid dripping from the input port 342 will not be able to enter the output port 222a. Of course, the orthographic projection of the input port 342 on the base 200 can also cover the output port 222a, that is, the input port 342 is located directly above the output port 222a.

[0042] The lower surface 320 of the seal 300 is recessed upward to a set depth to form a guide groove 351, which is connected to the air guide hole 340. In view of the fact that there is a space arranged around the protrusion 230 in the storage cavity 210, the end of the guide groove 351 away from the air guide hole 340 is located directly above the space. There can be multiple guide grooves 351, and the multiple guide grooves 351 are radially distributed relative to the central axis of the air guide hole 340. In other words, each guide groove 351 is located on a different radius of the same circle. The boss 330 also has a side wall surface 341, which defines the boundary of the air guide hole 340, and a guide groove 352 is opened on the side wall surface 341. The guide groove 352 is connected to the guide groove 351, and the end of the guide groove 352 away from the guide groove 351 is arranged close to the liquid guide slope 331. The number of the guide grooves 352 may be smaller than the number of the guide grooves 351 . In other words, ends of some of the guide grooves 351 are connected to the guide grooves 352 .

[0043] Usually, liquid will seep out of the atomizer core 100 to form exudate, and the aerosol retained in the atomizer chamber 11 will form condensate after liquefaction. The above exudate and condensate can be recorded as leakage liquid. When the above leakage liquid falls into the liquid guiding slope 331, since the liquid guiding slope 331 is inclined downward, the leakage liquid will fall to the upper surface 310 along the liquid guiding slope 331 under the action of its own gravity. When the open cavity 311 is connected with the storage cavity 210 through the through hole 312, the leakage liquid will also fall into the storage cavity 210 from the through hole 312. When the open cavity 311 cannot be connected with the storage cavity 210 through the through hole 312, the leakage liquid will be stored in the space set around the boss 330 in the open cavity 311. When the leaked liquid falls onto the side wall 341, the guide groove 351 will form capillary tension on the leaked liquid, so that the leaked liquid in the air guide hole 340 enters the guide groove 351 and flows into the storage chamber 210 through the guiding effect of the guide groove 351, preventing the leaked liquid in the air guide hole 340 from falling directly from the output port 222a to the input port 342 directly below the output port 222a, thereby preventing the leaked liquid from leaking out of the atomizer 10 from the air inlet channel 220.

[0044] In the case where the open cavity 311 cannot communicate with the storage cavity 210 through the through hole 312, when the leakage liquid stored in the open cavity 311 overflows the boss 330, or when the atomizer 10 is tilted, the leakage liquid in the open cavity 311 will flow into the side wall surface 341 along the liquid guiding slope 331. At this time, due to the effect of the drainage groove 352, the leakage liquid entering the air guide hole 340 falls into the storage cavity 210 through the drainage groove 352 and the drainage groove 351, and the leakage liquid in the air guide hole 340 can also be prevented from falling directly from the output port 222a to the input port 342 directly below, and the leakage liquid can be prevented from leaking out of the atomizer 10 from the air inlet channel 220. Of course, in the case where the input port 342 and the output port 222a are misaligned, even if the leakage liquid flows out of the air guide hole 340, the leakage liquid will not be able to enter the output port 222a.

[0045] Due to the effect of the raised portion 332, the raised portion 332 can occupy part of the volume of the atomizing chamber 11, thereby reasonably compressing the volume of the atomizing chamber 11, that is, reducing the volume of the atomizing chamber 11. Therefore, on the one hand, the total amount of aerosol retained in the atomizing chamber 11 can be reduced, thereby reducing the amount of condensate formed by aerosol liquefaction, that is, fundamentally reducing the existence of leakage liquid, thereby reducing the possibility of leakage of the atomizer 10. On the other hand, the amount of gas in the atomizing chamber 11 can be reduced, thereby reducing the absorption of heat by the gas to the atomizing core 100, improving the energy utilization rate of the atomizing core 100, and then improving the atomization efficiency and the amount of aerosol formed by atomization per unit time. At the same time, the aerosol retained in the atomizing chamber 11 with a reduced volume will also be reduced, thereby reducing the waste of aerosol and increasing the amount of aerosol inhaled by the user per unit time. At the same time, the provision of the raised portion 332 will also increase the structural strength and rigidity of the entire seal 300, avoid deformation of the seal 300 during the assembly process, improve the installation accuracy of the seal 300 and ensure its sealing performance.

[0046] Of course, compared with the case where no seal 300 is provided, the seal 300 of the above embodiment can also prevent the base 200 from directly defining part of the boundary of the atomization chamber 11, prevent the leaked liquid from directly contacting the output port 222a of the air inlet channel 220, and prevent the leaked liquid from leaking out of the atomizer 10 from the air inlet channel 220.

[0047] See also Figure 4 , Figure 5 and Figure 6In some embodiments, the atomizer 10 further includes a liquid absorbing member 400, which can be made of cotton material, so that the liquid absorbing member 400 has a strong absorption and accommodation capacity for liquid. The liquid absorbing member 400 will be sleeved outside the protrusion 230 and accommodated in the storage cavity 210. The liquid absorbing member 400 can abut against the lower surface 320 of the sealing member 300, so that the leakage liquid guided from the through hole 312 and the guide groove 351 will be directly absorbed by the liquid absorbing member 400. Due to the presence of the liquid absorbing member 400, most of the leakage liquid in the storage cavity 210 that was originally in a flowing state will be converted into a non-flowing state. Therefore, when the atomizer 10 is tilted or inverted, the leakage liquid in the liquid absorbing member 400 that is in a non-flowing state cannot enter the output port 222a, thereby further reducing the possibility of the leakage liquid leaking out of the atomizer 10 from the air inlet channel 220.

[0048] See also Figure 1 , Figure 2 and Fig.12 The present invention also provides an electronic atomization device 30, which includes a power supply 20 and an atomizer 10. The power supply 20 and the atomizer 10 are detachably connected, the power supply 20 can be charged and recycled, and the atomizer 10 can be a disposable consumable. When the liquid in the atomizer 10 is completely consumed, the atomizer 10 is unloaded from the power supply 20, and a new atomizer 10 filled with liquid is reinstalled. Since the leaked liquid of the atomizer 10 cannot enter the power supply 20 from the air inlet channel 220, the leaked liquid is prevented from corroding the power supply 20 or even causing the power supply 20 to explode, thereby improving the service life and safety of the power supply 20 and the electronic atomization device 30.

[0049] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An atomizer, It is characterized in that The device is provided with an atomization chamber and comprises: An atomizing core, used for atomizing an aerosol-generating matrix to form an aerosol; The base is provided with an air intake passage connected to the outside; and A sealing member is arranged on the base and has an upper surface arranged facing the atomizer core, the sealing member includes a boss connected to the upper surface and protruding relative to the upper surface, the boss is provided with an air guide hole connecting the atomizer chamber and the air inlet channel at the same time, and the boss has a liquid guide slope located outside the air guide hole and facing the atomizer core; along the direction away from the air guide hole, the distance from the liquid guide slope to the upper surface gradually decreases; The base is also provided with a storage cavity, which is used to store the aerosol generating matrix; the sealing member is provided with an open cavity, the boss is at least partially located in the open cavity, the upper surface defines a partial boundary of the open cavity, the upper surface is provided with a through hole, the base includes a positioning column that cooperates with the through hole, and there is a residual gap in the through hole between the positioning column and the sealing member, and the residual gap connects the storage cavity and the open cavity.

2. The atomizer according to claim 1, It is characterized in that The sealing member further comprises a lower surface disposed away from the atomizing core, the air guide hole penetrates the lower surface, a guide groove communicating with the air guide hole is formed on the lower surface, and the guide groove guides the aerosol generating matrix entering the air guide hole into the storage cavity; Wherein, the atomization core includes a porous ceramic matrix and a heating element; or, the atomization core includes liquid-absorbing cotton and a heating wire.

3. The atomizer according to claim 2, It is characterized in that There are multiple guide grooves, and the multiple guide grooves are radially distributed relative to the central axis of the air guide hole.

4. The atomizer according to claim 2, It is characterized in that The boss has a side wall surface defining the boundary of the air guide hole, and a drainage groove connected to the guide groove is opened on the side wall surface. The end of the drainage groove away from the guide groove is arranged close to the liquid guide slope.

5. The atomizer according to claim 1, It is characterized in that The sealing element is made of silicone material.

6. The atomizer according to claim 2, It is characterized in that The base has a bottom wall surface facing the atomizer core and defining a portion of the storage cavity. The base includes a raised portion at least partially located in the storage cavity, the raised portion is connected to the bottom wall surface and protrudes relative to the bottom wall surface, the raised portion has a free end surface spaced apart from the bottom wall surface, and the air inlet channel runs through the free end surface.

7. The atomizer according to claim 2, It is characterized in that The sealing member is sleeved on the base and covers the storage cavity.

8. An atomizer according to any one of claims 2 to 7, It is characterized in that It also includes a liquid absorbing member, which is located in the storage cavity and abuts against the sealing member, and the aerosol generating matrix entering the air guide hole can be absorbed by the liquid absorbing member.

9. The atomizer according to claim 1, It is characterized in that The boss further includes at least two raised portions spaced apart along the circumference of the air guide hole, the raised portions protrude toward the atomizer core relative to the liquid guide slope, and the liquid guide slope is located between two adjacent raised portions.

10. An electronic atomization device, It is characterized in that The invention comprises a power source and the atomizer according to any one of claims 1 to 9, wherein the atomizer is detachably connected to the power source.

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