ATOMIZATION CORE AND ELECTRONIC ATOMIZATION DEVICE

CROSS-REFERENCES TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese Patent Application No. 2024233013707, filed on December 27, 2024, and Chinese Patent Application No. 2025201627057, filed on January 22, 2025. The contents of the above identified applications are hereby incorporated herein by reference in their entireties.

FIELD

[0002] The present disclosure relates to the field of electronic atomization technology, and in particular, to an atomization core and an electronic atomization device.

BACKGROUND

[0003] An electronic atomization device, also known as an electronic cigarette, is a device which heats and atomizes e-liquid to generate aerosol for a user to inhale, to simulate a smoking feeling. As a cigarette substitute, the electronic atomization device is popular with vast smokers. Generally, the electronic atomization device includes an atomization assembly and a power supply assembly, the atomization assembly has a liquid storage bin and an atomization core therein, the e-liquid is stored in the liquid storage bin, the power supply assembly is configured to supply power to the atomization core, and the atomization core is configured to heat and atomize the e-liquid in the liquid storage bin to generate the aerosol for the user to inhale.

[0004] Currently, the conventional atomization core generally includes a porous ceramic liquid guide member and a heating member arranged on the liquid guide member, and the heating member performs heating by directly contacting the liquid guide member to heat and atomize the e-liquid in the liquid guide member. However, since porous ceramic has a small heat conductivity coefficient and a low thermal conduction rate, a surface of the liquid guide member contacting the heating member has a high temperature, and a part of the liquid guide member away from the heating member has a low temperature, and the liquid guide member has a poor preheating capability for the e-liquid (especially for the e-liquid on a side of the liquid guide member away from the heating member), and an e-liquid guide rate is slow. Therefore, it is difficult for the atomization core to atomize high-viscosity e-liquid with poor fluidity, and a scorched smell is prone to occur.

SUMMARY

[0005] Based on this, one embodiment of the present disclosure is to provide an atomization core and an electronic atomization device, to solve the problem that it is difficult for an existing atomization core to atomize high-viscosity e-liquid with poor fluidity, and a scorched smell is prone to occur.

[0006]According to an aspect of the present disclosure, there is provided an atomization core, including:

[0007]a liquid guide member; and

[0008]a heating member including a preheating portion and a heating portion with a working temperature higher than that of the preheating portion, the preheating portion being connected to a side wall of the liquid guide member, the heating portion being connected to a bottom wall of the liquid guide member, the preheating portion being configured to generate heat with a low temperature to preheat an atomizing medium in the liquid guide member, and the heating portion being configured to generate heat with a high temperature to heat the atomizing medium in the liquid guide member to generate aerosol.

[0009] In an embodiment, the preheating portion and the heating portion are arranged in series and/or in parallel with each other.

[0010] In an embodiment, the preheating portion includes a preheating wire and two first electrodes, two opposite ends of the preheating wire are connected to the two first electrodes respectively, the heating portion includes a heating wire and two second electrodes, two opposite ends of the heating wire are connected to the second electrodes respectively, each first electrode is connected to a corresponding second electrode.

[0011] In an embodiment, the preheating wire and/or the heating wire are in a mesh-like structure;

[0012] In one embodiment, the preheating wire and/or the heating wire are in an S-shaped or special-shaped bent extension structure.

[0013] In an embodiment, the preheating portion includes a preheating wire, the heating portion includes a heating wire, the preheating wire includes first preheating sections and second preheating sections connected to adjacent first preheating sections, the heating wire includes first heating sections and second heating sections connected to adjacent first heating sections, and the first preheating sections are parallel to the first heating sections.

[0014] In an embodiment, the second heating section is perpendicular to the second preheating section and the first heating section.

[0015] In an embodiment, a length of the first preheating section is less than a length of the first heating section.

[0016] In an embodiment, the preheating portion includes a preheating wire and a first electrode, and the heating portion includes a heating wire having a resistance value smaller than that of the preheating wire and a second electrode.

[0017] In an embodiment, the heating portion has a gap ratio larger than that of the preheating portion.

[0018] In an embodiment, at least two preheating portions are provided, the at least two the preheating portions are arranged in pairs, and the two preheating portions in each pair of preheating portions are spaced apart and are connected to two opposite side walls of the liquid guide member respectively.

[0019] In an embodiment, the preheating portion is attached to the side wall of the liquid guide member or embedded in the side wall of the liquid guide member, the heating portion is attached to the side wall of the liquid guide member or embedded in the bottom wall of the liquid guide member.

[0020] In an embodiment, the preheating portion includes a preheating wire, the preheating wire is completely embedded in the side wall of the liquid guide member, the heating portion includes a heating wire, the heating wire is partially embedded in the bottom wall of the liquid guide member, and a bottom surface of the heating wire is exposed from a bottom surface of the liquid guide member.

[0021] In an embodiment, the atomization core further includes a sealing sleeve, the sealing sleeve is sleeved on the liquid guide member, and the sealing sleeve comprises an abutting portion surrounding the liquid guide member.

[0022] In the above-mentioned atomization core, the heating member includes the preheating portion and the heating portion connected to each other, the preheating portion can generate the heat with the low temperature to preheat the atomizing medium in the liquid guide member, and the heating portion can generate the heat with the high temperature to heat the atomizing medium in the liquid guide member to generate the aerosol, and different parts of the heating member can form different temperature regions, and therefore, different functions can be performed hierarchically or regionally to enable the atomization core to have a better atomization effect. That is, the atomizing medium can be subjected to heat preservation before the heating portion heats and atomizes the atomizing medium, and the temperature of the liquid guide member is maintained in a certain temperature range (for example, 50℃-90℃), the atomizing medium can be better dissolved into the liquid guide member, flowing of the atomizing medium can be better assisted, and the problem that it is difficult for the existing atomization core to atomize the high-viscosity atomizing medium with poor fluidity, and the scorched smell is prone to occur is effectively solved.

[0023]According to another aspect of the present disclosure, an electronic atomization device is provided, the electronic atomization device has an air inlet and an air outlet in communication with each other, and the electronic atomization device includes:

[0024]an atomization assembly including a liquid storage member and the atomization core according to any of the above solutions, a liquid storage bin and an air passage being formed in the liquid storage member, the air passage being in communication with the air outlet, and at least part of the atomization core being arranged in the liquid storage bin or the air passage;

[0025]a power supply assembly including a bracket, a power source, and a microphone, an end of the bracket being connected to the liquid storage member, the bracket having a power source mounting position and a microphone mounting position therein, the microphone mounting position being in communication the air passage, the power source being arranged in the power source mounting position and connected to the atomization core, and the microphone being arranged in the microphone mounting position and electrically connected to the power source.

[0026] In an embodiment, the bracket includes a body and an isolation portion, the body is connected to an end of the liquid storage member away from the air outlet, the power source mounting position is formed in the body, the isolation portion being arranged in the power source mounting position and connected to the body, and the microphone mounting position is enclosed by the isolation portion.

[0027] In the above-mentioned electronic atomization device, the bracket is arranged in the power supply assembly, the power source mounting position and the microphone mounting position in communication with the air passage are formed in the bracket, and the power source and the microphone are arranged in the power source mounting position and the microphone mounting position respectively, and the power supply assembly can be directly connected to the atomization assembly as a whole, and therefore, an integral structure of the electronic atomization device is simplified. Structural members such as sealing silica gel are not required to be arranged between the atomization assembly and the power supply assembly, to simplify mounting steps, and greatly reducing a defective rate of product assembly and the risk of liquid leakage of a product.

BRIEF DESCRIPTION OF THE DRAWINGS

[0028]FIG. 1 is a perspective view of an electronic atomization device according to an embodiment of the present disclosure.

[0029]FIG. 2 is a top view of the electronic atomization device according to an embodiment of the present disclosure.

[0030]FIG. 3 is an exploded view of the electronic atomization device according to an embodiment of the present disclosure.

[0031]FIG. 4 is a sectional view taken along A-A in FIG. 2.

[0032]FIG. 5 is a schematic structural view of a liquid storage member in the electronic atomization device according to an embodiment of the present disclosure.

[0033]FIG. 6 is a schematic structural view of an atomization core according to an embodiment of the present disclosure.

[0034]FIG. 7 is an exploded view of the atomization core according to an embodiment of the present disclosure.

[0035]FIG. 8 is a schematic structural view of a heating member in the atomization core according to an embodiment of the present disclosure.

[0036]FIG. 9 is an enlarged view of a portion B in FIG. 4.

[0037]FIG. 10 is a first schematic structural view of a bracket in the electronic atomization device according to an embodiment of the present disclosure.

[0038]FIG. 11 is a second schematic structural view of the bracket in the electronic atomization device according to an embodiment of the present disclosure.

[0039]Description of reference signs:

[0040] 10: electronic atomization device; 11: atomizing cavity; 12: liquid blocking cavity; 100: housing; 101: air inlet; 102: air outlet; 200: atomization assembly; 210: liquid storage member; 210a: liquid storage bin; 210b: air passage; 210c: plug position; 211: partition plate; 220: atomization core; 221: liquid guide member; 222: heating member; 222a: atomization surface; 2221: preheating portion; 2221a: preheating wire; 2221b: first electrode; 2221c: first preheating section; 2221d: second preheating section; 2222: heating portion; 2222a: heating wire; 2222b: second electrode; 2222c: first heating section; 2222d: second heating section; 223: sealing sleeve; 2231: abutting portion; 300: power supply assembly; 310: bracket; 311: body; 3111: power source mounting position; 3112: flange; 3113: groove; 3114: air passing hole; 3115: microphone air hole; 3116: wire hole; 3117: notch; 312: isolation portion; 3121: microphone mounting position; 320: power source; 330: microphone; 400: liquid blocking member; 401: vent hole; 402: air column; 403: liquid storage hole.

DETAILED DESCRIPTION

[0041] In order to make the aforementioned embodiments of the present disclosure more apparent, the embodiments of the present disclosure are described below in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth, to provide a thorough understanding of the present disclosure. However, the present disclosure may be implemented in many ways different from those described herein, and similar improvements may be made without departing from the essence of the present disclosure, and therefore, the present disclosure is not limited to the examples disclosed below.

[0042] In descriptions of the present disclosure, it should be understood that, directions or positional relationships indicated by terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “anticlockwise”, “axial”, “radial”, “circumferential” etc. are based on orientations or positional relationships shown in the accompanying drawings, and they are used only for describing the present disclosure and for description simplicity, but do not indicate or imply that an indicated device or member must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present disclosure.

[0043] In addition, the terms such as "first" and "second" are used herein for purposes of description and are not intended to indicate or imply relative importance or significance or to imply the number of indicated features. Thus, the feature defined with “first” and “second” may include at least one of this feature explicitly or implicitly. In the description of the present disclosure, “a plurality of” means at least two, such as two, three, or the like, unless otherwise specified.

[0044] In the present disclosure, unless specified or limited otherwise, the terms “mounted”, “connected”, “coupled”, and “fixed” and the like are understood broadly. It may be, for example, fixed connections, detachable connections, or integral connections, may also be mechanical or electrical connections, may also be direct connections or indirect connections via intervening structures, may also be communication or an interaction relationship of two members, unless otherwise specified.

[0045] In the present disclosure, unless specified or limited otherwise, the description that a first feature is “on” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are contacted via an additional feature formed therebetween. Furthermore, a first feature “on,” “above,” or “on top of” a second feature may include an embodiment in which the first feature is right or obliquely “on,” “above,” or “on top of” the second feature, or just means that the first feature is at a height higher than that of the second feature; while a first feature “below,” “under,” or “on bottom of” a second feature may include an embodiment in which the first feature is right or obliquely “below,” “under,” or “on bottom of” the second feature, or just means that the first feature is at a height lower than that of the second feature.

[0046] It should be noted that if one element is referred to as being “fixed on” or “provided at” another element, the element may be directly located on the other element or an intermediate element may exist. If one element is considered to be “connected” to another element, it may be directly connected to the another element or an intermediate element may co-exist. As used herein, the terms “vertical”, “horizontal”, “upper”, “lower”, “left”, “right”, or the like, are for purposes of illustration only and do not denote a sole embodiment.

[0047] An embodiment of the present disclosure provides an electronic atomization device, which is configured to heat an atomizing medium stored in the electronic atomization device to form aerosol for a user to inhale.

[0048] A structure of the electronic atomization device according to the present disclosure will be described below by taking an electronic cigarette as an example of the electronic atomization device. The present embodiment is described as an example only, and does not limit the scope of the present disclosure. It may be understood that, in other embodiments, the electronic atomization device according to the present disclosure is not limited to the electronic cigarette, but may be any other electronic atomization device capable of atomizing the atomizing medium into the aerosol, and is not limited herein.

[0049] Referring to FIG. 1 to FIG. 4, FIG. 1 shows a perspective view of the electronic atomization device 10 according to an embodiment of the present disclosure, FIG. 2 shows a top view of the electronic atomization device 10, FIG. 3 shows an exploded view of the electronic atomization device 10, and FIG. 4 shows a sectional view of an internal structure of the electronic atomization device 10. The electronic atomization device 10 according to the embodiment of the present disclosure includes a housing 100, an atomization assembly 200, and a power supply assembly 300. Both the atomization assembly 200 and the power supply assembly 300 are arranged in the housing 100 and connected to each other. The power supply assembly 300 is configured to supply power to the atomization assembly 200, and the atomization assembly 200 is configured to heat the atomizing medium stored in the atomization assembly under the action of electric energy provided by the power supply assembly 300, and the atomizing medium can be atomized to generate the aerosol for the user to inhale.

[0050]In an embodiment, referring to FIG. 4, two opposite ends of the housing 100 are provided with an air inlet 101 and an air outlet 102 that are in communication with each other. The atomization assembly 200 is arranged at the end of the housing 100 adjacent to the air outlet 102. The power supply assembly 300 is arranged at the end of the housing 100 adjacent to the air inlet 101. The atomization assembly 200 includes a liquid storage member 210 and an atomization core 220. A liquid storage bin 210a for storing the atomizing medium and an air passage 210b in communication with the liquid storage bin 210a are formed in the liquid storage member 210. The air passage 210b is in communication with the air outlet 102. At least part of the atomization core 220 is arranged at the liquid storage bin 210a and seals an opening at an end of the liquid storage bin 210a. The power supply assembly 300 includes a bracket 310, a power source 320, and a microphone 330. The bracket 310 is connected to the liquid storage member 210, and the bracket 310 has a power source mounting position 3111 and a microphone mounting position 3121 therein. The microphone mounting position 3121 is in communication with the air passage 210b. The power source 320 is arranged in the power source mounting position 3111 and connected to the atomization core 220. The microphone 330 is arranged in the microphone mounting position 3121 and connected to the power source 320.

[0051] In one embodiment, an end of the liquid storage member 210 adjacent to the bracket 310 and an end of the bracket 310 adjacent to the liquid storage member 210 jointly form an atomizing cavity 11 communicating the air passage 210b and the power source mounting position 3111. A side surface of the atomization core 220 is an atomization surface 222a, and the atomization surface 222a is arranged towards the atomizing cavity 11.

[0052] When the user uses the electronic atomization device 10 to perform inhalation, since the air inlet 101 is in communication with the air outlet 102, external air enters the power source mounting position 3111 of the bracket 310 from the air inlet 101, and flows into the atomizing cavity 11 from the power source mounting position 3111. Meanwhile, after the microphone 330 senses a negative pressure generated by the inhalation, the power source 320 is driven to supply power to the atomization core 220, the atomizing medium flowing from the liquid storage bin 210a into the atomization core 220 is heated and atomized by the atomization core 220 on the atomization surface 222a to generate the aerosol, the aerosol is gathered in the atomizing cavity 11 and mixed with the external air, and then is inhaled into the mouth of the user from the air outlet 102 through the air passage 210b.

[0053] It can be seen that, with the above arrangement, the atomization assembly 200 and the power supply assembly 300 are both of modular structures, and during assembling, the atomization assembly 200 and the power supply assembly 300 are connected to each other after being separately assembled in advance, and finally, the whole structure is mounted in the housing 100, and then, assembly of the electronic atomization device 10 is finished, thus simplifying mounting steps.

[0054] It should be understood that in some other embodiments, the electronic atomization device 10 may be provided without the housing 100. In this case, the air inlet 101 is formed at an end of the bracket 310 away from the liquid storage member 210, and the air outlet 102 is formed at an end of the liquid storage member 210 away from the bracket 310. However, the arrangement of the housing 100 may protect the atomization assembly 200 and the power supply assembly 300.

[0055]Specific structures of the liquid storage member 210, the atomization core 220, and the bracket 310 are described below. The power source 320 includes a battery and a PCB electrically connected to the battery, and for a specific structure, reference may be made to the prior art, and the specific structure is not repeated herein.

[0056] As shown in FIG. 4 and FIG. 5 together, in an embodiment, a partition plate 211 is arranged in an inner cavity of the liquid storage member 210. The liquid storage bin 210a and the air passage 210b are separated by the partition plate 211, and a size of the partition plate 211 in a first direction (i.e., X direction in the drawing) is smaller than a size of an outer wall of the liquid storage member 210 in the first direction, and an end of the liquid storage member 210 connected to the bracket 310 is formed with a plug position 210c communicating the liquid storage cavity and the air passage 210b. An end of the bracket 310 is inserted into the plug position 210c and covers the plug position 210c. An end of the liquid storage bin 210a adjacent to the plug position 210c is provided with an opening. The atomization core 220 is arranged at the opening and covers the opening. The end of the bracket 310 adjacent to the liquid storage member 210, a side wall of the plug position 210c, and the atomization surface 222a jointly form the atomizing cavity 11.

[0057] In one embodiment, two partition plates 211 are provided, and the two partition plates 211 are spaced apart in a second direction (i.e., Y direction in the drawing) perpendicular to the first direction to divide the inner cavity of the liquid storage member 210 into one liquid storage bin 210a and two air passages 210b, and the two air passages 210b are located on both sides of the liquid storage bin 210a in the second direction.

[0058]It should be understood that the number of the partition plate 211 may be only one, and it may be in a flat plate shape or in a ring shape, the flat-plate-shaped partition plate 211 divides the inner cavity of the liquid storage member 210 into one liquid storage cavity and one air passage 210b adjacently arranged in the second direction, or the ring-shaped partition plate 211 divides the inner cavity of the liquid storage member 210 into a ring-shaped air passage 210b surrounding the liquid storage cavity, which is not limited herein.

[0059]In other embodiments, a vent pipe may be arranged in the liquid storage member 210. An outer wall of the vent pipe and an inner wall of the liquid storage member 210 jointly form the liquid storage bin 210a. The air passage 210b is formed in the vent pipe, and the atomization core 220 is arranged in the air passage 210b, which is not limited herein.

[0060] It is apparent that by configuring the structure of the atomization assembly 200 to be the structure of the embodiment shown in the drawing, the arrangement of the vent pipe can be omitted, to greatly simplify the structure of the atomization assembly 200.

[0061] Referring to FIG. 6 and FIG. 7, a structure of the atomization core 220 according to an embodiment is shown. In this embodiment, the atomization core 220 includes a liquid guide member 221 and a heating member 222. The heating member 222 is wrapped around an outer wall of the liquid guide member 221 and electrically connected to the power source 320. In one embodiment, the heating member 222 includes a preheating portion 2221 and a heating portion 2222 connected to each other. The heating portion 2222 is connected to a bottom wall of the liquid guide member 221, and the bottom wall of the liquid guide member 221 is opposite to the liquid storage bin 210a. A side of the heating portion 2222 opposite to the liquid guide member 221 forms the atomization surface 222a. The preheating portion 2221 is connected to a side wall of the liquid guide member 221, for example, attached to an outer surface of the side wall of the liquid guide member 221, or embedded in the side wall of the liquid guide member 221. In the embodiment shown in the drawings, two preheating portions 2221 are provided, and the two preheating portions 2221 are connected to two opposite side walls of the liquid guide member 221 respectively. Certainly, the number of the preheating portions 2221 may be one, two or four. All the preheating portions 2221 are provided in pairs, and the two preheating portions 2221 in each pair of preheating portions 2221 are spaced apart and connected to two opposite side walls of the liquid guide member 221 respectively. In the embodiment shown in the drawings, the liquid guide member 221 has a cubic structure, and in order to adapt to the structure, each preheating portion 2221 and the heating portion 2222 are perpendicular to each other, and certainly, each preheating portion 2221 and the heating portion 2222 may be arranged at any angle relative to each other, depending on the structure of the liquid guide member 221, which is not limited herein.

[0062] For respective effects, the liquid guide member 221 is configured to limit the atomizing medium entering the liquid guide member 221 from the liquid storage bin 210a, and guide the atomizing medium in the liquid storage bin 210a to the atomization surface 222a. The preheating portion 2221 is configured to generate heat with a low temperature to preheat the atomizing medium in the liquid guide member 221, and meanwhile perform heat preservation on the atomizing medium in the liquid guide member 221 to maintain the temperature of the liquid guide member 221 within a certain temperature range, and the atomizing medium can be better dissolved in the liquid guide member 221 and the atomizing medium can be better assisted to flow to the atomization surface 222a. The heating portion 2222 is configured to generate heat with a high temperature to heat the atomizing medium, and the atomizing medium can be atomized to generate the aerosol.

[0063] It should be understood that a heating temperature of the preheating portion 2221 is lower than that of the heating portion 2222. In one embodiment, the heating temperature of the preheating portion 2221 is between 50 and 90 degrees Celsius and the heating temperature of the heating portion 2222 is between 160 and 220 degrees Celsius.

[0064] It should be further understood that the preheating portion 2221 and the heating portion 2222 may be connected in series, in parallel, or in a combination of series and parallel, which is not limited herein. The purpose of connecting the preheating portion 2221 and the heating portion 2222 in series and/or in parallel is to form different temperature regions at different parts of the heating member 222 by using a resistance difference between the preheating portion 2221 and the heating portion 2222, and different functions can be performed hierarchically or regionally to enable the atomization core 220 to have a better atomization effect.

[0065] In one embodiment, the liquid guide member 221 is made of ceramic, and the ceramic is selected for the purpose of making atomized aerosol particles smaller, making an aerosol experience finer and smoother, and having longer durability and service life, to better resist a high temperature and chemical corrosion. Certainly, the material of the liquid guide member 221 is not limited to the ceramic, and may be liquid guide cotton, or the like, which is not limited herein.

[0066]For structures of the preheating portion 2221 and the heating portion 2222, as shown in FIG. 8, the preheating portion 2221 includes a preheating wire 2221a and two first electrodes 2221b arranged opposite to each other, and two opposite ends of the preheating wire 2221a are connected to the two first electrodes 2221b respectively. The heating portion 2222 includes a heating wire 2222a and two second electrodes 2222b arranged opposite to each other, and two opposite ends of the heating wire 2222a are connected to the two second electrodes 2222b respectively. Each first electrode 2221b is connected to a corresponding second electrode 2222b in series and/or in parallel. In one embodiment, the preheating wire 2221a and/or the heating wire 2222a may be in a mesh-like structure such as a circular, triangular or oval mesh-like structure, or may be in an S-shaped, track-shaped or other special-shaped bent extension structure, and may be manufactured using various processes such as butt welding, etching, stamping, or molding, which is not specifically limited herein.

[0067] In the embodiment shown in FIG. 8, the preheating wire 2221a is in a bent shape, and includes first preheating sections 2221c that are alternately distributed in parallel and second preheating sections 2221d that are connected to adjacent first heating sections 2222c respectively. The first preheating section 2221c extends in a length direction of the preheating portion 2221, and the second preheating section 2221d extends in a width direction of the preheating portion 2221. The first preheating section 2221c is perpendicular to the second preheating section 2221d. A length of the first preheating section 2221c is less than a length of the second preheating section 2221d. Two opposite ends of each second preheating section 2221d are connected to two adjacent first preheating sections 2221c respectively.

[0068] In one embodiment, the heating wire 2222a also has a similar shape to the preheating wire 2221a and is also in a bent shape. The heating wire 2222a includes first heating sections 2222c that are alternately distributed in parallel and second heating sections 2222d that are connected to adjacent first heating sections 2222c respectively. The first heating section 2222c extends in a length direction of the heating portion 2222, and the second heating section 2222d extends in a width direction of the heating portion 2222. The first heating section 2222c is perpendicular to the second heating section 2222d. A length of the first heating section 2222c is less than a length of the second heating section 2222d. Two opposite ends of each second heating section 2222d are connected to two adjacent first heating sections 2222c respectively.

[0069] In one embodiment, a resistance of the preheating wire 2221a is greater than a resistance of the heating wire 2222a. In one embodiment, the resistance of the preheating wire 2221a is 3 to 8 times the resistance of the heating wire 2222a. In one embodiment, the resistance of the preheating wire 2221a is 5 to10 ohms and the resistance of the heating wire 2222a is 1 to 3 ohms.

[0070] In one embodiment, a working temperature of the preheating wire 2221a is lower than a working temperature of the heating wire 2222a.

[0071] In one embodiment, a length of the first heating section 2222c of the heating wire 2222a is greater than a length of the first preheating section 2221c of the preheating wire 2221a. In one embodiment, the length of the first heating section 2222c of the heating wire 2222a is greater than twice the length of the first preheating section 2221c of the preheating wire 2221a.

[0072] In one embodiment, the first heating section 2222c of the heating wire 2222a is parallel to the first preheating section 2221c of the preheating wire 2221a. The second heating section 2222d of the heating wire 2222a is perpendicular to the second preheating section 2221d of the preheating wire 2221a.

[0073] In one embodiment, the heating wire 2222a is partially embedded in the bottom wall of the liquid guide member, and a bottom surface of the heating wire 2222a is exposed from a bottom surface of the liquid guide member. The preheating wire 2221a is completely embedded in the side wall of the liquid guide member.

[0074] In one embodiment, the heating portion 2222 has a gap ratio larger than that of the preheating portion 2221. The gap ratio herein refers to a ratio of an area of a through portion not covered by solid material (i.e., a total area of cavities, hollows, holes, etc.) in an element to a total floor area of the element. In one embodiment, arrangement density of the heating wires 2222a of the heating portion 2222 is less than arrangement density of the preheating wires 2221a of the preheating portion 2221.

[0075] Further, as shown in FIG. 6 and FIG. 9 together, in order to prevent the atomizing medium in the liquid guide member 221 from leaking out, the atomization core 220 further includes a sealing sleeve 223. The sealing sleeve 223 is sleeved on the liquid guide member 221, and the sealing sleeve 223 has an abutting portion 2231 surrounding the liquid guide member 221. One side of the abutting portion 2231 abuts against an end portion of the partition plate 211 away from the air outlet 102, and the bracket 310 abuts against a side of the abutting portion 2231 opposite the partition plate 211, and the atomization core 220 can be fixed in the liquid storage member 210, and certainly, the way of fixing the atomization core 220 in the liquid storage member 210 is not limited to the above way, and the atomization core 220 may be fixed in the liquid storage member 210 in other ways.

[0076]For the structure of the bracket 310, as shown in FIG. 4 and FIG. 10 together, the bracket 310 may have an integrally formed structure. In the embodiment shown in FIG. 10, the bracket 310 includes a body 311 and an isolation portion 312. The body 311 has a hollow frame-shaped structure and is connected to an end of the liquid storage member 210 away from the air outlet 102. The power source mounting position 3111 is formed in the body 311, the isolation portion 312 is arranged in the power source mounting position 3111 and connected to the body 311, and the microphone mounting position 3121 is enclosed by the isolation portion 312.

[0077]In one embodiment, as shown in FIG. 9 and FIG. 11, an end of the body 311 adjacent to the liquid storage member 210 has a flange 3112, and the flange 3112 is attached to a side wall of the plug position 210c and abuts against a side of the abutting portion 2231 of the sealing sleeve 223 in the atomization core 220 away from the partition plate 211. In the embodiment of FIG. 10, the flange 3112 is annular, and the flange 3112 defines a groove 3113 for forming the atomizing cavity 11. A bottom wall of the groove 3113 is provided with an air passing hole 3114, a microphone air hole 3115, and a wire hole 3116 that extend through the bottom wall of the groove 3113. The power source mounting position 3111 is communicated with the air passing hole 3114 and the wire hole 3116. The microphone mounting position 3121 is in communication with the microphone air hole 3115. The wire hole 3116 is configured for a pin of the atomization core 220 to extend through, and the heating member 222 of the atomization core 220 and the power source 320 are electrically connected to each other.

[0078] It should be understood that in other embodiments, as shown in FIG. 9 to FIG. 11 together, at least two flanges 3112 may be provided, a notch 3117 is formed between two adjacent flanges 3112, and the notch 3117 communicates the air passage 210b and the atomizing cavity 11. In this way, the flange 3112 abuts against the atomization core 220, and the notch 3117 can serve as a passage for airflow to pass through without additionally adding the air passing hole, to simplify a processing process.

[0079] It should also be understood that the bracket 310 may have an integral structure formed by connecting parts to each other, for example, by fasteners or welding, which is not limited herein.

[0080] In this way, the bracket 310 is designed to have the integral structure, and has the power source mounting position 3111 and the microphone mounting position 3121 integrated thereon, and meanwhile, one end of the bracket 310 is connected to an end of the liquid storage member 210 having the plug position 210c, and abuts against the abutting portion 2231 of the atomization core 220, and the overall structure of the electronic atomization device 10 can be simplified. Compared with structures of most of existing electronic atomization devices 10 formed by combining parts, parts such as a liquid guide bracket, an atomization core mounting base, sealing silica gel, a power source bracket, or a microphone mounting base can be omitted, and then, mounting steps of the electronic atomization device 10 can be simplified, and therefore, the electronic atomization device 10 has a better sealing performance, thus greatly reducing a defective rate of product assembly and the risk of e-liquid leakage of the product.

[0081] It should be noted that after the user’s inhalation is completed, aerosol inevitably remains in the atomizing cavity 11, and condensate is generated after the aerosol is cooled. In order to avoid that the condensate drops on the air passing hole 3114 or the microphone air hole 3115 and leaks to the power source 320 or the microphone 330 to damage the electronic atomization device 10, as an improvement of the above embodiment, with continued reference to FIG. 9 and FIG. 11, a liquid blocking member 400 is arranged in the groove 3113 of the bracket 310, and the liquid blocking member 400 covers the air passing hole 3114 and the microphone air hole 3115, and the liquid blocking member 400 encloses a liquid blocking cavity 12 separated from the atomizing cavity 11 in the groove 3113. The liquid blocking member 400 is provided with a vent hole 401, and the liquid blocking cavity 12 is in communication with the atomizing cavity 11 through the vent hole 401.

[0082]In this way, due to blocking of the liquid blocking member 400, the condensate in the atomizing cavity 11 can be prevented from dropping to the air passing hole 3114 or the microphone air hole 3115. Based on the above embodiment, a side of the liquid blocking member 400 facing the atomizing cavity 11 is provided with an air column 402. The vent hole 401 extends through the air column 402. Since the air column 402 has a certain height, after the condensate drops on the liquid blocking member 400, a height of the deposited condensate is lower than the height of the air column 402, and therefore, the condensate does not overflow the air column 402 and flow through the vent hole 401 to the position of the air passing hole 3114 or the microphone air hole 3115.

[0083] In one embodiment, the side of the liquid blocking member 400 facing the atomizing cavity 11 is further provided with a liquid storage hole 403. The liquid storage hole 403 is configured to store the condensate formed in the atomizing cavity 11, and the condensate can be prevented from being deposited on a surface of the liquid blocking member 400 provided with the air column 402, and the possibility that the electronic atomization device 10 is damaged by the condensate can be further reduced.

[0084] The above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the features are described in the embodiments. However, as long as there is no contradiction in the combination of these features, the combinations should be considered as in the scope of the specification.

[0085] The above-described embodiments are only several implementations of the present disclosure, and the descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present disclosure. Various modifications and improvements can be made without departing from the concept of the present disclosure, and all fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the appended claims.