Electronic atomization device

Abstract

The electronic atomizer (100) includes a substrate (10) having a heating cavity (11) formed therein, and an electrode assembly (30) including a first electrode (32) and a second electrode (34), both of which are at least partially inserted into the heating cavity (11). The electrode assembly (30) is controllable to form an arc between the first and second electrodes within the heating cavity to generate plasma, and the polarity of the first and second electrodes is switched between positive and negative at a predetermined interval. The first and second electrodes alternately function as cathodes, preventing one electrode from being burned out due to its long-term role as a cathode. The alternating cathode between the first and second electrodes results in a more uniform temperature distribution throughout the substrate after several switchings, allowing the substrate to more uniformly heat and atomize the aerosol-generating substrate. This improves the spatial uniformity of plasma heating and reduces electrode damage.

Description

[Technical Field]

[0001] [CROSS-REFERENCE TO RELATED APPLICATIONS] This application claims priority to Chinese Patent Application No. 202223171651.6, entitled "Electronic Atomization Device," filed on November 28, 2022, the entire contents of which are incorporated herein by reference.

[0002] TECHNICAL FIELD This application relates to the technical field of atomization, and in particular to electronic atomization devices. [Background technology]

[0003] Aerosol is a colloidal dispersion system formed by dispersing and suspending fine particles of solid or liquid in a gas medium, and since aerosols are inhaled into the human body through the respiratory system, they provide users with a new alternative inhalation method. For example, atomization devices that generate aerosols by baking and heating aerosol-generating substrates such as herbs or pastes can be applied to various fields to provide users with inhalable aerosols, thereby replacing conventional product forms and inhalation methods.

[0004] Generally, an aerosol-generating substrate is heated by an electronic atomizer, and some electronic atomizers use a plasma heating method, specifically, a high-voltage electrode and a low-voltage electrode are disposed at a fixed distance within a heating element, and when a high voltage is applied between the electrodes, an arc and plasma are generated within the gap, and heating is performed using the thermal energy of the plasma.

[0005] However, when a high-voltage DC power supply is used to generate a discharge, the plasma in the discharge gap experiences a temperature gradient from the high-voltage electrode to the low-voltage electrode, resulting in a gradual temperature gradient in the axial direction of the heating element, resulting in a loss of spatial uniformity in heating. Furthermore, because the cathode is bombarded by positive ions in the plasma, its temperature becomes significantly higher than that of the anode. While selecting high-temperature-resistant electrode materials can mitigate electrode burnout to some extent, electrode damage and poor discharge performance are still likely to occur. Therefore, conventional plasma heating methods result in poor spatial uniformity in heating and are prone to electrode damage. Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, it is necessary to provide an electronic atomization device that can solve the problems of plasma heating, such as low spatial uniformity and easily damaged electrodes. [Means for solving the problem]

[0007] Electronic atomizers are a substrate having a heating cavity formed therein; an electrode assembly including a first electrode and a second electrode, both of which are at least partially inserted into the heating cavity; An arc can be formed between the first electrode and the second electrode within the heating cavity to generate plasma, and the first electrode and the second electrode are switched between positive and negative polarities at a predetermined cycle.

[0008] In the above electronic atomization device, an arc is formed between the first electrode and the second electrode within the heating cavity, and controlled to generate plasma. The plasma generated by the discharge between the first electrode and the second electrode heats the substrate, and further heats and atomizes the aerosol-generating substrate provided on the substrate, thereby generating an aerosol that the user can inhale.

[0009] The first and second electrodes alternate between cathode and anodic polarity at regular intervals. That is, the first electrode acts as a cathode and the second electrode acts as an anode for a certain period of time, and then switches back again for another period of time, so that the first electrode acts as an anode and the second electrode acts as a cathode. This switching allows the first and second electrodes to alternately function as cathodes, preventing either electrode from burning out due to long-term exposure to high temperatures and preventing discharge failures caused by electrode damage. Alternating the cathode and anodic polarity of the first and second electrodes allows the cathode, which is prone to high temperatures, to alternate between the first and second electrodes. Furthermore, the substrate becomes hotter at one end for a certain period of time and hotter at the other end for another period of time. After several switching cycles, the spatial temperature distribution throughout the substrate becomes more uniform, allowing the substrate to heat and atomize the aerosol-generating substrate more uniformly. This improves the spatial uniformity of plasma heating and reduces electrode damage.

[0010] In one embodiment, the electronic atomization device includes a power supply assembly and a control assembly, the control assembly is electrically connected between the power supply assembly and the electrode assembly, the power supply assembly is configured to supply high-voltage AC current, and the control assembly is configured to output high-voltage DC current to the electrode assembly and switch the positive and negative polarities of the first electrode and the second electrode at the predetermined period.

[0011] In one embodiment, the power supply assembly includes a power supply module and a transformer, the transformer being connected to the power supply module and configured to output the high voltage alternating current; The control assembly includes a rectifier and a switching control member, the rectifier is electrically connected between the transformer and the switching control member and is configured to convert the high-voltage AC current into a high-voltage DC current flowing in the switching control member, the first electrode and the second electrode are both electrically connected to the switching control member, and the switching control member is configured to switch the negative-positive polarity of the first electrode and the second electrode in opposite directions at the predetermined period.

[0012] In one embodiment, the substrate is configured as a central heating structure inserted within the aerosol-generating substrate, or the substrate is configured as a peripheral heating structure surrounding the aerosol-generating substrate.

[0013] In one embodiment, the substrate includes a tube having the heating cavity, and the first electrode and the second electrode are both at least partially inserted into the heating cavity, and their ends are spaced apart in the axial direction of the tube.

[0014] In one embodiment, the tube has a top end and a bottom end that face each other along its axial direction, and the initial polarity of one of the first and second electrodes whose axial end is located at the top end is a cathode, and the initial polarity of the other of the first and second electrodes whose axial end is located at the bottom end is an anode.

[0015] In one embodiment, the tube includes an inner tube and an outer tube fitted around the inner tube with a gap therebetween, the heating cavity includes a first sub-cavity and a second sub-cavity communicating with each other, the first sub-cavity is formed in the inner tube along its axial direction, and the second sub-cavity is defined between a top of the inner tube and the outer tube, At least a portion of one of the first electrode and the second electrode is inserted into the first sub-cavity, and at least a portion of the other of the first electrode and the second electrode is inserted into the second sub-cavity.

[0016] In one embodiment, the first electrode has one end inserted into the first sub-cavity and the other end located outside the first sub-cavity, the second electrode includes a main body portion and a lead portion, the main body portion is provided in the second sub-cavity and is provided opposite the first electrode and spaced apart along the axial direction of the inner tube, and the lead portion is connected to the main body portion and extends to the outside through a gap between the inner tube and the outer tube.

[0017] In one embodiment, the base includes a housing and an inner cylinder fitted into the housing, the inner cylinder having an accommodating cavity, the heating cavity being defined between the inner cylinder and the housing, and the first electrode and the second electrode being both attached to the housing.

[0018] In one embodiment, one of the first electrode and the second electrode is provided to surround the outer periphery of the inner cylinder, and the other of the first electrode and the second electrode is located at the center of the bottom of the inner cylinder; The initial polarity of one of the first electrode and the second electrode located at the center of the bottom of the inner cylinder is a cathode, and the initial polarity of the other of the first electrode and the second electrode surrounding the outer periphery of the inner cylinder is an anode.

[0019] In one embodiment, the inner cylinder is removably mounted on the housing. [Brief explanation of the drawings]

[0020] In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly describe the drawings that need to be used in the description of the embodiments or the prior art. It is obvious that the drawings in the following description are only the embodiments of the present application, and those skilled in the art can obtain other drawings based on the disclosed drawings without creative work. [Figure 1] 1 is a structural schematic diagram of an electronic atomization device according to an embodiment of the present application; [Figure 2] FIG. 2 is a block diagram of the electronic atomization device shown in FIG. [Figure 3] FIG. 2 is a structural schematic diagram of an electronic atomization device according to another embodiment of the present application. [Figure 4] FIG. 4 is a schematic structural view of a part of the electronic atomization device shown in FIG. 3. DETAILED DESCRIPTION OF THE INVENTION

[0021] In order to make the above-mentioned objects, features, and advantages of the present application clearer and easier to understand, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, many specific details are set forth to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present application, so the present application is not limited by the specific examples disclosed below.

[0022] In the description of this application, orientations or positional relationships indicated by terms such as "center," "longitudinal direction," "lateral direction," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial direction," "radial direction," "circumferential direction," etc. are orientations or positional relationships shown in the drawings, and are used only to facilitate or simplify the description of this application, and it should be understood that these do not represent or imply that the devices or parts shown necessarily have a specific orientation or a specific oriented structure and operation, and therefore should not be construed as limiting this application.

[0023] Additionally, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply a relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature qualified as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of this application, unless explicitly and specifically limited, "plurality" means at least two, e.g., two, three, etc.

[0024] In this application, unless otherwise clearly specified or limited, the terms "attached," "coupled," "connected," "fixed," etc. should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, an internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art can understand the specific meanings of the above terms in this application according to specific circumstances.

[0025] In this application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include direct contact between the first and second features, or indirect contact between the first and second features via an intermediate medium. Furthermore, a first feature being "above," "above," or "on the upper surface" of a second feature may include the first feature being directly above or diagonally above the second feature, or may simply indicate that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "below," or "on the lower surface" of a second feature may mean that the first feature is directly below or diagonally below the second feature, or may simply indicate that the horizontal height of the first feature is lower than that of the second feature.

[0026] It should be noted that when an element is "fixed" or "mounted" to another element, it may be directly connected to the other element, or intermediate elements may also be present. When an element is considered to be "connected" to another element, it may be directly connected to the other element, or intermediate elements may also be present. Terms such as "vertical," "horizontal," "top," "bottom," "left," "right," and similar terms used herein are for descriptive purposes only and are not intended to be exclusive embodiments.

[0027] As shown in FIG. 1 , one embodiment of the present application provides an electronic atomization device 100 including a substrate 10 and an electrode assembly 30. A heating cavity 11 is formed within the substrate 10. The electrode assembly 30 includes a first electrode 32 and a second electrode 34, both of which are at least partially inserted within the heating cavity 11. Plasma can be generated within the heating cavity 11 by controlling the formation of an arc between the first electrode 32 and the second electrode 34. This generates plasma by discharging between the first electrode 32 and the second electrode 34, thereby heating the substrate 10 and further heating and atomizing an aerosol-generating substrate provided on the substrate 10, thereby generating an aerosol that can be inhaled by a user.

[0028] The first electrode 32 and the second electrode 34 alternate between positive and negative polarities at a predetermined interval. That is, the first electrode 32 is the cathode and the second electrode 34 is the anode for a certain period of time, and then the polarities are reversed for another certain period of time, so that the first electrode 32 is the anode and the second electrode 34 is the cathode. This reverse polarity switching allows the first electrode 32 and the second electrode 34 to alternately function as cathodes, preventing either electrode from burning out due to high temperatures as a cathode for a long period of time and preventing discharge failure due to electrode damage. By alternately switching the positive and negative polarities of the first electrode 32 and the second electrode 34, the cathodes that tend to become hot alternate between the first electrode 32 and the second electrode 34. Furthermore, the substrate 10 becomes hot at one end for a certain period of time and at the other end for another period of time. After switching the polarities several times, the spatial temperature distribution throughout the substrate 10 becomes more uniform. This allows the substrate 10 to more uniformly heat and atomize the aerosol-generating substrate. This results in better spatial uniformity of heating by plasma heating and makes the electrodes less likely to break.

[0029] 2 , the electronic atomization device 100 further includes a power supply assembly 50 and a control assembly 70. The control assembly 70 is electrically connected between the power supply assembly 50 and the electrode assembly 30. The power supply assembly 50 supplies a high-voltage AC current, and the control assembly 70 outputs a high-voltage DC current to the electrode assembly 30 and switches the positive and negative polarities of the first electrode 32 and the second electrode 34 at a predetermined cycle. By electrically connecting the control assembly 70 between the power supply assembly 50 and the electrode assembly 30, the control assembly 70 can convert the high-voltage AC current into a high-voltage DC current flowing through the electrode assembly 30, and the control assembly 70 can switch the positive and negative polarities at a predetermined cycle, thereby periodically changing the polarities of the first electrode 32 and the second electrode 34. The switching time for periodic switching may be set to the same time or may be set to a different time as required, thereby controlling the proportion of time that the first electrode 32 or the second electrode 34 is the cathode, thereby controlling the movement of the high temperature region between the first electrode 32 and the second electrode 34.

[0030] Specifically, the power supply assembly 50 includes a power supply module 52 and a transformer 54. The transformer 54 is connected to the power supply module 52 to output a high-voltage AC current, and the transformer 54 increases the voltage of the current. The control assembly 70 includes a rectifier 72 and a switching control member 74. The rectifier 72 is electrically connected between the transformer 54 and the switching control member 74 to convert the high-voltage AC current into a high-voltage DC current flowing through the switching control member 74. The first electrode 32 and the second electrode 34 are both electrically connected to the switching control member 74, and the switching control member 74 reverses the polarity of the first electrode 32 and the second electrode 34 between positive and negative at a predetermined cycle. In this way, the rectifier 72 converts the high-voltage AC output from the transformer 54 into high-voltage DC, which is then output to the electrode assembly 30 by the switching control member 74. The switching control member 74 periodically switches the polarity of the first electrode 32 and the second electrode 34, so that the first electrode 32 and the second electrode 34 alternately function as cathodes, preventing the first electrode 32 or the second electrode 34 from being burned out by high temperature as a cathode for a long period of time, and constantly switching the high-temperature areas on the substrate 10 corresponding to the cathodes, resulting in more uniform heating of the entire substrate 10.

[0031] As shown in FIG. 1, in some embodiments, the substrate 10 is configured as a central heating structure inserted into the aerosol-generating substrate, and when plasma is generated in the heating cavity 11 inside the substrate 10, the substrate 10 itself is heated, and the substrate 10 is inserted into the aerosol-generating substrate, conducting heat from the inside of the aerosol-generating substrate to heat and atomize the aerosol-generating substrate.

[0032] Furthermore, the base 10 includes a tube 14, which has a heating cavity 11, and the first electrode 32 and the second electrode 34 are both at least partially inserted into the heating cavity 11, with their ends spaced apart in the axial direction of the tube 14, so that an arc is formed within the tube 14 along the axial direction of the tube 14, heating the tube 14 along the axial direction of the tube 14. In use, when an aerosol-generating substrate is inserted into the tube 14, the aerosol-generating substrate can be heated from the inside out by the tube 14.

[0033] Specifically, the tube body 14 has a top end 141 and a bottom end that face each other along its axial direction, and the initial polarity of the one of the first electrode 32 and the second electrode 34 whose axial end is located at the top end 141 is a cathode, and the initial polarity of the one of the first electrode 32 and the second electrode 34 whose axial end is located at the bottom end 143 is an anode, thereby positioning the cathode with a higher temperature at the top end 141 and bringing the high-temperature region closer to the top end 141, thereby improving the smoke generation rate at startup.

[0034] Specifically, in this embodiment, the tube 14 includes an inner tube 145 and an outer tube 147 fitted around the inner tube 145 with a gap therebetween, and the heating cavity 11 includes a first sub-cavity 112 and a second sub-cavity 114 that communicate with each other. The first sub-cavity 112 is formed by penetrating the inner tube 145 along its axial direction, and the second sub-cavity 114 is defined between the top of the inner tube 145 and the outer tube 147. At least a portion of one of the first electrode 32 and the second electrode 34 is inserted into the first sub-cavity 112, and at least a portion of the other of the first electrode 32 and the second electrode 34 is inserted into the second sub-cavity 114. In this way, the inner tube 145 and the outer tube 147 are fitted together to form a heating cavity 11, and the first electrode 32 and the second electrode 34 are arranged at intervals along the axial direction of the inner tube 145, and then controlled to generate plasma in at least the first sub-cavity 112 along the axial direction of the inner tube 145, thereby heating the tube 14 along the axial direction.

[0035] Furthermore, one end of the first electrode 32 is inserted into the first sub-cavity 112 and the other end is located outside the first sub-cavity 112, thereby achieving circuit connection. The second electrode 34 includes a body portion 341 and a lead portion 343. The body portion 341 is provided within the second sub-cavity 114 and is provided opposite the first electrode 32 and inner tube 145 at an interval along the axial direction. The lead portion 343 is connected to the body portion 341 and extends to the outside through the gap between the inner tube 145 and the outer tube 147, connecting the second electrode 34 to the circuit. The body portions 341 of the first electrode 32 and the second electrode 34 generate an arc in the axial direction within the first sub-cavity 112, thereby heating the tube 14.

[0036] As shown in Figures 3 and 4, in some other embodiments, the substrate 10 is configured as a peripheral heating structure surrounding the aerosol-generating substrate, i.e., the substrate 10 surrounds the aerosol-generating substrate, and when plasma is generated in the heating cavity 11, the substrate 10 is heated, and the substrate 10 heats the aerosol-generating substrate surrounded by it from the outside in, and further atomizes it to form an aerosol that is inhaled by the user.

[0037] Furthermore, the substrate 10 includes a housing 16 and an inner cylinder 18 fitted into the housing 16, the inner cylinder 18 having a storage cavity 13, a heating cavity 11 defined between the inner cylinder 18 and the housing 16, a first electrode 32 and a second electrode 34 both attached to the housing 16, and at least a portion of both inserted into the heating cavity 11 between the inner cylinder 18 and the housing 16, thereby generating an arc and plasma by discharge within the heating cavity 11, and then heating the inner cylinder 18 and further heating and atomizing the aerosol-generating substrate within the storage cavity 13 of the inner cylinder 18.

[0038] Specifically, one of the first electrode 32 and the second electrode 34 is disposed to surround the outer periphery of the inner cylinder 18, and the other of the first electrode 32 and the second electrode 34 is located at the center of the bottom of the inner cylinder 18. Thus, the arc formed between the first electrode 32 and the second electrode 34 rotates around the entire outer periphery of the inner cylinder 18 due to the driving of the magnetic field, thereby heating the entire outer periphery of the inner cylinder 18 and making the heating area more uniform. Preferably, the second electrode 34 has a discharge ring fitted around the outer periphery of the inner cylinder 18, and the electronic atomization device 100 further includes a magnetic ring 80 disposed in the housing 16 and fitted around the outer periphery of the discharge ring. The magnetic ring 80 is used to drive the arc to rotate around the circumferential direction of the discharge ring within the heating cavity 11, thereby uniformly heating the inner cylinder 18 from the entire outer periphery.

[0039] Furthermore, the initial polarity of one of the first and second electrodes 32, 34 located at the center of the bottom of the inner cylinder 18 is cathode, while the initial polarity of the other of the first and second electrodes 32, 34 surrounding the outer periphery of the inner cylinder 18 is positive, thereby increasing the temperature at the center of the bottom of the inner cylinder 18 in the initial state and quickly heating the bottom of the inner cylinder 18, further shortening the initial smoke generation time and improving the smoke generation speed at the start of atomization. After the requirement for rapid smoke generation is met, the polarities of the first and second electrodes 32, 34 are reversed, with one at the outer periphery of the inner cylinder 18 becoming cathode and the other at the center of the bottom of the inner cylinder 18 becoming anode, thereby creating a relatively uniform temperature field around the outer periphery of the inner cylinder 18 and enabling the aerosol-generating substrate to be uniformly heated and atomized.

[0040] As can be understood, the polarity of the first electrode 32 and the second electrode 34 may be switched once or periodically multiple times, and is not limited here.

[0041] Preferably, the inner cylinder 18 is removably mounted on the housing 16. When the aerosol-generating substrate is heated and atomized, the aerosol-generating substrate is placed in the receiving cavity 13 of the inner cylinder 18 and the inner cylinder 18 is attached to the housing 16, thereby defining a heating cavity 11 between the inner cylinder 18 and the housing 16. The electrode assembly 30 discharges electricity in the heating cavity 11 to generate an arc and plasma, and the heat of the plasma heats the inner cylinder 18 and the aerosol-generating substrate therein. After using the electronic atomization device 100 for a certain period of time, the inner cylinder 18 can be easily removed from the housing 16 for cleaning, preventing residue in the inner cylinder 18 from affecting the atomization sensation after long-term use and ensuring a comfortable atomization sensation.

[0042] The technical features of the above embodiments can be combined in any way, and for the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, but as long as there is no contradiction in the combination of these technical features, they should be considered within the scope described in this specification.

[0043] The above examples only describe some embodiments of the present application, and although the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent of the present application. Those skilled in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application should be determined based on the scope of the accompanying claims. [Explanation of symbols]

[0044] 100 atomizers 10 Base 11 Heating cavity 112 First sub-cavity 114 Second sub-cavity 13. Storage cavity 14. Body 141 Apex 143 Bottom end 145 Inner tube 147 Outer body 16 Housing 18 Inner cylinder 30 Electrode Assembly 32 1st electrode 34 2nd electrode 341 Main body 343 Lead section 50 Power Supply Assembly 52 Power Supply Module 54 Transformer 70 Control Assembly 72 Rectifier 74 Switching control member 80 magnetic rings.

Claims

1. a substrate having a heating cavity formed therein; an electrode assembly including a first electrode and a second electrode, both of which are at least partially inserted into the heating cavity; An electronic atomization device characterized in that it is controllable to form an arc between the first electrode and the second electrode in the heating cavity to generate plasma, and the polarities of the first electrode and the second electrode are switched between positive and negative at a predetermined cycle.

2. 2. The electronic atomization device of claim 1, further comprising: a power supply assembly and a control assembly, the control assembly being electrically connected between the power supply assembly and the electrode assembly, the power supply assembly being configured to supply high-voltage AC current, and the control assembly being configured to output high-voltage DC current to the electrode assembly and to switch the polarities of the first electrode and the second electrode between positive and negative at the predetermined period.

3. the power supply assembly includes a power supply module and a transformer, the transformer being connected to the power supply module and configured to output the high voltage alternating current; 3. The electronic atomizer of claim 2, wherein the control assembly includes a rectifier and a switching control member, the rectifier is electrically connected between the transformer and the switching control member and configured to convert the high-voltage AC current into a high-voltage DC current flowing through the switching control member, the first electrode and the second electrode are both electrically connected to the switching control member, and the switching control member is configured to reversely switch the polarities of the first electrode and the second electrode between positive and negative in the predetermined cycle.

4. 4. The electronic atomization device according to claim 1, wherein the base is configured as a central heating structure inserted within the aerosol-generating substrate, or the base is configured as a peripheral heating structure surrounding the aerosol-generating substrate.

5. 5. The electronic atomization device according to claim 4, wherein the base includes a tube, the tube having the heating cavity, at least a portion of each of the first electrode and the second electrode is inserted into the heating cavity, and ends of both electrodes are spaced apart in the axial direction of the tube.

6. 6. The electronic atomization device according to claim 5, wherein the tubular body has a top end and a bottom end that face each other along its axial direction, and an initial polarity of one of the first electrode and the second electrode whose axial end is located at the top end is a cathode, and an initial polarity of the other of the first electrode and the second electrode whose axial end is located at the bottom end is an anode.

7. the tube includes an inner tube and an outer tube fitted around the inner tube with a gap therebetween, the heating cavity includes a first sub-cavity and a second sub-cavity communicating with each other, the first sub-cavity is formed in the inner tube along its axial direction, and the second sub-cavity is defined between a top of the inner tube and the outer tube, 6. The electronic atomization device according to claim 5, wherein at least a portion of one of the first electrode and the second electrode is inserted into the first sub-cavity, and at least a portion of the other of the first electrode and the second electrode is inserted into the second sub-cavity.

8. 8. The electronic atomizer according to claim 7, wherein one end of the first electrode is inserted into the first sub-cavity and the other end is located outside the first sub-cavity, the second electrode includes a main body and a lead, the main body is provided in the second sub-cavity and is provided facing the first electrode and spaced apart along the axial direction of the inner tube, and the lead is connected to the main body and extends to the outside through a gap between the inner tube and the outer tube.

9. The electronic atomization device according to any one of claims 1 to 3, characterized in that the base includes a housing and an inner cylinder fitted into the housing, the inner cylinder has a receiving cavity, the heating cavity is defined between the inner cylinder and the housing, and both the first electrode and the second electrode are attached to the housing.

10. one of the first electrode and the second electrode is provided to surround an outer periphery of the inner cylinder, and the other of the first electrode and the second electrode is located at the center of a bottom portion of the inner cylinder; 10. The electronic atomization device according to claim 9, wherein one of the first electrode and the second electrode located at the center of the bottom of the inner cylinder has an initial polarity of a cathode, and the other of the first electrode and the second electrode surrounding the outer periphery of the inner cylinder has an initial polarity of an anode.

11. The electronic atomizer according to claim 10, wherein the inner cylinder is detachably mounted on the housing.

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