Atomizing core, atomizer and electronic atomizing device

Abstract

The utility model relates to an atomizing core, an atomizer and an electronic atomizing device. The electronic atomization device comprises an atomizer and a power supply unit, the atomizer comprises a shell, an atomization unit and an atomization core, the atomization unit is arranged at one end of the shell, an oil storage cavity is formed by the atomization unit and the inner wall of the shell, the atomization core is arranged in the atomization unit and comprises a base body and a heating body, and an atomization cavity communicated with the oil storage cavity is formed in the end, in the axial direction of the base body, of the base body; the base body is provided with a plurality of micro holes communicated with the atomization cavity and the outside of the base body, and the heating body is arranged on the base body in a sleeved mode, attached to the outer wall of the base body and used for heating and atomizing the atomization medium seeping out of the outer wall of the base body to generate aerosol, so that the area of the outer surface of the base body is larger than that of the inner surface of the base body. According to the technical scheme, the atomization contact area of the base body and the heating body can be greatly increased, and therefore it can be guaranteed that the atomization medium is fully atomized, the atomization efficiency and the average atomization amount are improved, and the use requirement of a user is met.

Description

Technical Field

[0001] The present application relates to the technical field of atomization, and particularly to an atomization core, an atomizer and an electronic atomization device. Background Art

[0002] An electronic atomization device, also known as an electronic cigarette, virtual cigarette, vape, aerosol generating device, etc., is mainly used to simulate the smoking feeling without affecting health for smoking cessation or replacing cigarettes. As one of the core components of an electronic atomization device, most atomization cores are made of ceramic materials. Compared with traditional cotton cores or fiberglass ropes, ceramic atomization cores have the advantages of strong lipophilicity, uniform heating, and high operating temperature.

[0003] Current ceramic atomization cores generally include a porous ceramic matrix and a heating element disposed on the porous ceramic matrix. However, since most of the existing porous ceramic matrices are hollow tubular structures and the heating element is embedded on the inner wall of the porous ceramic matrix, the atomization contact area between the porous ceramic matrix and the heating matrix is limited. Even if the heating power of the heating element is increased, it is difficult to achieve the effect of a large amount of smoke. Therefore, the existing ceramic atomization cores have problems of low atomization efficiency and average atomization amount (TPM, Total Particle Measure, that is, the amount of smoke generated per puff), and cannot meet the user's demand for a large amount of smoke. Summary of the Utility Model

[0004] Based on this, in view of the problems of low atomization efficiency and average atomization amount of the atomization core in the existing electronic atomization device, it is necessary to provide an atomization core that can solve the above problems, an atomizer including the atomization core, and an electronic atomization device including the atomizer.

[0005] According to one aspect of the present application, there is provided an atomization core, including:

[0006] A matrix, an atomization cavity is provided at one end of the matrix along its own axis, and a plurality of micropores communicating with the atomization cavity are provided on the outer wall of the matrix. The micropores are configured to guide the atomization medium, so that the atomization medium in the atomization cavity can seep out to the outer wall of the matrix;

[0007] A heating element, sleeved on the matrix and attached to the outer wall of the matrix, the heating element is used to heat and atomize the atomization medium seeping out to the outer wall of the matrix to generate aerosol.

[0008] In one embodiment, the matrix includes a first oil guiding body and a second oil guiding body connected to one end of the first oil guiding body along its own axis. The porosity of the first oil guiding body is greater than that of the second oil guiding body. The atomization cavity is provided in the first oil guiding body, and at least a part of the heating element is sleeved on the outer peripheral surface of the first oil guiding body.

[0009] In one embodiment, a barrier member is provided on the bottom wall of the atomization chamber, and the outer wall of the barrier member is attached to the inner peripheral surface of the atomization chamber.

[0010] In one embodiment, the heating element includes a main body and a bent portion. The bent portion bends from one end of the main body along the radial direction of the main body towards the central axis of the main body. The main body is attached to the side wall of the base, and the bent portion is attached to the bottom wall of the base.

[0011] According to another aspect of the present application, there is provided an atomizer, comprising:

[0012] A housing having an opening at one end and an air outlet at the other end, and an air flow channel communicating with the air outlet is provided inside the housing;

[0013] An atomization unit is provided at the end of the housing having the opening and is provided with an air inlet communicating with the air outlet. The atomization unit and the inner wall of the housing define an oil storage cavity for storing an atomization medium;

[0014] The atomization core as described in any of the above solutions is provided inside the atomization unit, and the atomization chamber of the atomization core communicates with the oil storage cavity and the air flow channel respectively.

[0015] In one embodiment, an air-liquid balance channel is provided on the outer wall of the atomization unit. The air-liquid balance channel communicates with the air inlet. An air-liquid balance member is movably provided on the side of the atomization unit close to the oil storage cavity. The air-liquid balance member isolates the air-liquid balance channel from the oil storage cavity;

[0016] When external air enters the air-liquid balance channel from the air inlet, the air-liquid balance member is configured to be able to move relative to the atomization unit under the air pressure exerted by the external air, so that the air-liquid balance channel communicates with the oil storage cavity.

[0017] In one embodiment, a gas guide column is provided inside the housing. The gas guide column extends towards the inside of the housing from the end of the housing where the air outlet is provided, and the end of the gas guide column away from the air outlet is connected to the support assembly. The air flow channel penetrates through the gas guide column.

[0018] In one embodiment, the support assembly includes a bracket, a first seal and a second seal. The first seal and the second seal are provided at opposite ends of the bracket and form an oil guide cavity with the inner wall of the bracket. The air guide cavity penetrates through the opposite side walls of the bracket. The gas guide column is inserted into the first seal, and the end of the atomization core away from the base assembly is inserted into the second seal.

[0019] According to another aspect of the present application, an electronic atomization device is provided, which includes a power supply unit and an atomizer as described in any of the above solutions, and the atomizer is electrically connected to the power supply unit.

[0020] For the above atomization core, atomizer and electronic atomization device, by opening an atomization cavity at one end of the base along its own axis, the atomization cavity can accommodate more atomization medium without causing a large amount of atomization medium to leak from the bottom of the base. And by opening a plurality of micropores communicating the atomization cavity and the outside of the base in the base, the atomization medium in the atomization cavity can seep out to the outer wall of the base through the micropores. At the same time, by arranging a heating body outside the base and attaching it to the outer wall of the base, the heating body wraps the base in the heating body. In this way, since the outer surface area of the base is larger than the inner surface area, the atomization contact area between the base and the heating body can be greatly increased, so as to ensure that the atomization medium is fully atomized, thereby improving the atomization efficiency and average atomization amount, and meeting the user's usage requirements. Description of the Drawings

[0021] Figure 1 It is a schematic external view of an atomizer provided by an embodiment of the present application.

[0022] Figure 2 It is an exploded view of an atomizer provided by an embodiment of the present application.

[0023] Figure 3 It is a cross-sectional view of the internal structure of an atomizer provided by an embodiment of the present application Figure 1 。

[0024] Figure 4 It is a cross-sectional view of the internal structure of an atomizer provided by an embodiment of the present application Figure 2 。

[0025] Figure 5 It is a cross-sectional view of the internal structure of an atomizer provided by an embodiment of the present application Figure 3 。

[0026] Figure 6 It is an axonometric view of an atomization core in an atomizer provided by an embodiment of the present application.

[0027] Figure 7 It is an exploded view of an atomization core in an atomizer provided by an embodiment of the present application.

[0028] Figure 8 It is a cross-sectional view of an atomization core in an atomizer provided by an embodiment of the present application.

[0029] Figure 9 It is a cross-sectional view of an atomization core in an atomizer provided by another embodiment of the present application.

[0030] Description of the Reference Numerals:

[0031] 10. Atomizer; 100. Housing; 101. Mouthpiece; 102. Air outlet hole; 103. Oil storage cavity; 200. Atomization unit; 201. Air inlet hole; 202. Mounting position; 203. Oil guiding cavity; 204. Air guiding cavity; 205. Air-liquid balance channel; 210. Base assembly; 210a. Second flange; 211. Base; 212. Third seal; 213. Contact electrode; 214. Oil absorbing member; 215. Magnetic attracting member; 220. Support assembly; 220a. First flange; 221. Bracket; 222. First seal; 2221. Oil inlet hole; 223. Second seal; 300. Atomization core; 310. Substrate; 310a. Atomization cavity; 311. First oil guiding body; 312. Second oil guiding body; 320. Heating element; 321. Body; 322. Bent portion; 330. Pin; 340. Barrier member; 400. Air guiding column; 401. Air flow channel; 500. Air-liquid balance member. Detailed implementation manners

[0032] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to fully understand 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 improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0034] In addition, if these terms "first" and "second" appear, these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0035] In this application, unless otherwise clearly defined and limited, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In this application, unless otherwise clearly defined and limited, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0037] It should be noted that if an element is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. If an element is considered to be "connected" to another element, it can be directly connected to the other component or there may be an intermediate component at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0038] An embodiment of the present application provides an atomization core, an atomizer and an electronic atomization device. The electronic atomization device includes an atomizer, the atomizer includes an atomization core, and the electronic atomization device heats the atomization medium inside itself to form an aerosol for the user to inhale.

[0039] Taking the electronic atomization device as an electronic cigarette as an example below, the structures of the electronic atomization device, the atomizer and the atomization core in this application are described. This embodiment is only used as an example for illustration and will not limit the technical scope of this application. It can be understood that in other embodiments, the electronic atomization device of this application is not limited to being an electronic cigarette, and can also be any other electronic atomization device that can atomize the atomization medium into an aerosol, which is not limited here.

[0040] The electronic atomization device provided by an embodiment of the present application includes Figures 1 to 4The atomizer 10 and a power supply unit (not shown in the figure) are shown. The atomizer 10 is electrically connected to the power supply unit. The power supply unit is used to supply power to the atomizer 10, and the atomizer 10 is used to heat and atomize the atomization medium inside itself to generate an aerosol for the user to inhale.

[0041] Referring to Figures 1 to 4 , Figure 1 FIG. shows a schematic external view of the atomizer 10 in an embodiment of the present application. Figure 2 FIG. shows an exploded schematic view of the atomizer 10 of the above embodiment. Figure 3 and Figure 4 FIG. shows a cross-sectional view of the atomizer 10 of the above embodiment. The atomizer 10 provided by the embodiment of the present application includes a housing 100, an atomization unit 200, and an atomization core 300. One end of the housing 100 is open, and the other end has a mouthpiece 101. The mouthpiece 101 is provided with an air outlet hole 102, and an air flow channel 401 communicating with the air outlet hole 102 is provided inside the housing 100; the atomization unit 200 is arranged at the open end of the housing 100 and is provided with an air inlet hole 201. The atomization unit 200 and the inner wall of the housing 100 enclose an oil storage cavity 103 for storing the atomization medium; the atomization core 300 is arranged inside the atomization unit 200 and has an atomization cavity 310a. When the electronic atomization device works, the atomization medium in the oil storage cavity 103 can flow into the atomization cavity 310a, and the atomization core 300 heats and atomizes the atomization medium.

[0042] Specifically, as Figure 3 and Figure 4 shown, a gas guiding column 400 is provided inside the housing 100. The gas guiding column 400 extends from the end of the housing 100 where the air outlet hole 102 is provided (i.e., from the end with the mouthpiece 101) towards the inside of the housing 100, and the end of the gas guiding column 400 away from the air outlet hole 102 is connected to the atomization unit 200. The air flow channel 401 penetrates through the gas guiding column 400. The atomization unit 200 includes a base assembly 210 and a support assembly 220 connected to the base assembly 210. One side of the support assembly 220 and the inner wall of the housing 100 form an oil storage cavity 103. The end of the gas guiding column 400 is inserted into this side of the support assembly 220. The other side of the support assembly 220 and the inner wall of the base assembly 210 form an installation position 202. The atomization core 300 is arranged in the installation position 202, and one end of the atomization core 300 is connected to the support assembly 220, and the other end is connected to the base assembly 210; the support assembly 220 is also provided with a separated oil guiding cavity 203 and a gas guiding cavity 204. An atomization cavity 310a is provided inside the atomization core 300. The atomization cavity 310a communicates with the oil storage cavity 103 through the oil guiding cavity 203. The gas guiding cavity 204 communicates with the installation position 202 and communicates with the air flow channel 401 through the gap between the support assembly 220 and the inner wall of the housing 100.

[0043] More specifically, in one embodiment, the support assembly 220 includes a bracket 221, a first seal 222 and a second seal 223. The bracket 221 is connected to the base assembly 210. The first seal 222 and the second seal 223 are disposed at opposite ends of the bracket 221 in the vertical direction in the figure and form an oil guide cavity 203 with the inner wall of the bracket 221. An air guide cavity 204 penetrates through opposite side walls of the bracket 221. The air guide column 400 is inserted into the first seal 222, and one end of the atomization core 300 away from the base assembly 210 is inserted into the second seal 223. The functions of the first seal 222 and the second seal 223 are to seal the support assembly 220 so that the atomization medium can only enter the oil guide cavity 203 along a predetermined path and then enter the atomization core 300. Preferably, the oil guide cavity 203 is U-shaped, and oil inlet holes 2221 are respectively formed on both sides of the first seal 222 along the radial direction of the air guide column 400, and each oil inlet hole 2221 communicates with the oil guide cavity 203.

[0044] Thus, through the above settings, as Figure 3 shown by the dashed line in Figure 4 , the atomization medium in the oil storage cavity 103 can enter the oil guide cavity 203 respectively from the two oil inlet holes 2221 formed on the first seal 222 under the action of gravity, and then flow downward under the action of gravity and converge into the atomization core 300, so that sufficient atomization medium can flow into the atomization core 300 to avoid dry burning and generating a burnt smell, and thus the user's inhalation taste can be guaranteed. At the same time, as

[0045] Please continue to refer to Figure 2 and Figure 3, in the structure of the base assembly 210, the base assembly 210 includes a base 211, a third seal 212, and a contact electrode 213. The base 211 is connected to the bracket 221 of the support assembly 220. The third seal 212 is attached to the inner wall of the base 211. One side of the third seal 212, one side of the second seal 223, and the inner side wall of the base 211 together form a mounting position 202. One end of the atomization core 300 away from the second seal 223 is inserted into the third seal 212. The function of setting the third seal 212 is to prevent the condensate generated after the aerosol in the mounting position 202 cools from leaking out, thereby avoiding safety accidents such as short circuits caused by the condensate leaking into the power supply unit; there are two contact electrodes 213, namely the positive electrode and the negative electrode. Both contact electrodes 213 penetrate the bottom wall of the base 211 and are inserted into the third seal 212 for connection to the power supply unit. The atomization core 300 is connected to the contact electrodes 213, enabling the atomization core 300 to be electrically connected to the power supply unit, so that heat can be generated under the action of the electric energy provided by the power supply unit to heat and atomize the atomization medium.

[0046] Preferably, an oil absorption member 214 is further embedded on the bottom wall of the base 211 on the side close to the third seal 212. The oil absorption member 214 is used to adsorb the atomization medium oozing from the bottom of the atomization core 300 or the condensate that may leak from the third seal 212, so as to further prevent the atomization medium or condensate from leaking into the power supply unit.

[0047] Optionally, a magnetic member 215 is further embedded on the bottom wall of the base 211. The magnetic member 215 is used to adsorb the power supply unit, so that the atomizer 10 and the power supply unit can be more closely connected to each other.

[0048] It should be noted that in some cases, when the user uses the electronic atomization device to suck, a negative pressure will be generated in the oil storage cavity 103. If the oil storage cavity 103 cannot reach air pressure balance with the external environment in time through the external air flow, the atomization medium (such as e-liquid) cannot be quickly and smoothly driven to the surface of the atomization core 300. The specific phenomenon is that the oil supply amount of the atomization medium to the atomization core 300 is sometimes more and sometimes less, and the smoke amount is unstable.

[0049] Therefore, to solve the above problems, in a preferred embodiment, as Figure 5As shown in the figure, an air-liquid balance channel 205 is formed on the outer wall of the atomization unit 200. The air-liquid balance channel 205 is communicated with the air inlet hole 201. An air-liquid balance member 500 is movably arranged on the side of the atomization unit 200 close to the oil storage cavity 103. The air-liquid balance member 500 isolates the air-liquid balance channel 205 from the oil storage cavity 103. When external air enters the air-liquid balance channel 205 from the air inlet hole 201, the air-liquid balance member 500 is configured to be able to move relative to the atomization unit 200 under the air pressure exerted by the external air, so that the air-liquid balance channel 205 is communicated with the oil storage cavity 103.

[0050] In this way, when the air pressure in the oil storage cavity 103 is too low, external air can enter the air-liquid balance channel 205 from the air inlet hole 201, so as to apply air pressure to the air-liquid balance member 500 to make the air-liquid balance member 500 move relative to the atomization unit 200 (for example, push the air-liquid balance member 500 upward relative to the atomization unit 200), so that the air-liquid balance channel 205 can be communicated with the oil storage cavity 103, and then the air pressure in the oil storage cavity 103 is the same as the air pressure of the external environment to achieve air pressure balance, preventing the atomization medium from flowing smoothly; after the air pressure is balanced, the air-liquid balance member 500 returns to its original position, isolating the oil storage cavity 103 and the air-liquid balance channel 205 again to prevent the atomization medium from leaking.

[0051] It can be understood that the number of the air-liquid balance members 500 can be more than two, and the number of the air-liquid balance channels 205 corresponds to the number of the air-liquid balance members 500. Each air-liquid balance member 500 can isolate a corresponding air-liquid balance channel 205 from the oil storage cavity 103. It can also be understood that in other embodiments, the air-liquid balance member 500 can also be an elastic element made of silica gel material. When external air applies pressure to the air-liquid balance member 500, the air-liquid balance member 500 can generate recoverable elastic deformation, so as to also move relative to the atomization unit 200 to make the air pressure in the oil storage cavity 103 balance with the external air pressure. After the air pressure is balanced, the air-liquid balance member 500 returns to its original state under the action of the elastic force, and can also isolate the oil storage cavity 103 and the air-liquid balance channel 205 again.

[0052] Furthermore, in terms of the specific formation structure of the air-liquid balance channel 205, in one embodiment, a first flange 220a is formed on the outer wall of the support assembly 220. One side of the base assembly 210 close to the support assembly 220 has a second flange 210a. The first flange 220a and the second flange 210a are arranged at intervals and jointly form the air-liquid balance channel 205. The first flange 220a is formed on the outer wall of the middle bracket 221 of the support assembly 220. The air-liquid balance member 500 is arranged on the bracket 221 and connected to the first seal 222. One end edge of the base 211 in the base assembly 210 close to the support assembly 220 forms the second flange 210a.

[0053] Of course, the specific formation structure of the gas-liquid balance channel 205 is not limited to this. The gas-liquid balance channel 205 can also be directly opened on the outer wall of the support component 220, or the support component 220 and the base component 210 are integrally connected. A part of the gas-liquid balance channel 205 is opened on the outer wall of the support component 220, and the other part is opened on the outer wall of the base component 210, which is not limited herein.

[0054] As Figure 5 shown by the dashed line in

[0055] Refer to Figure 6 , Figure 6 which shows an external view of the atomization core 300 provided by an embodiment of the present application, Figure 7 which shows an exploded view of the atomization core 300 provided by an embodiment of the present application, Figure 8 which shows a cross-sectional view of the atomization core 300 provided by an embodiment of the present application. In this embodiment, the atomization core 300 includes a base body 310 and a heating element 320. The base body 310 has a circular columnar structure, and an atomization cavity 310a is opened at one end along its own axis. A plurality of micropores communicating with the atomization cavity 310a are also opened on the outer wall of the base body 310; the atomization cavity 310a is generally cylindrical and is used to accommodate the atomization medium flowing in from the oil storage cavity 103. The micropores are configured to guide the atomization medium so that the atomization medium in the atomization cavity 310a can seep out to the outer wall of the base body 310; the heating element 320 is sleeved on the base body 310 and is attached to the outer wall of the base body 310, and the heating element 320 is connected with two pins 330. The two pins 330 are led out from the bottom or side wall of the heating element 320 and are respectively connected to a contact electrode 213 correspondingly, so that the power supply unit can be electrically connected to the heating element 320, thereby enabling the heating element 320 to generate heat to heat and atomize the atomization medium seeping out to the outer wall of the base body 310. In one embodiment, the diameter of the atomization core 300 is 2.5 mm and the depth is 6 mm. Of course, this size can be designed according to the needs of users.

[0056] In this way, the atomization medium flowing from the oil storage cavity 103 into the atomization cavity 310a can seep out through the micropores to the outer wall of the substrate 310. At the same time, the heating element 320 wraps the substrate 310 inside the heating element 320. Since the outer surface area of the substrate 310 is larger than the inner surface area, the atomization contact area between the substrate 310 and the heating element 320 can be greatly increased, ensuring that the atomization medium is fully atomized, thereby improving the atomization efficiency and the average atomization amount, and meeting the user's usage requirements.

[0057] Exemplarily, the substrate 310 of the atomization core 300 is made of porous ceramic material because the porous ceramic carrier has excellent heat resistance and can work at a temperature as high as 1000°C. And due to its porosity (i.e., having a plurality of micropores), it has good oil guiding and oil locking functions, and the atomization medium can uniformly penetrate into it. More specifically, the material of the substrate 310 includes but is not limited to at least one of silica ceramic, alumina ceramic, cordierite ceramic or aerogel ceramic, preferably aerogel ceramic. Aerogel ceramic has the advantages of high porosity, low pore diameter, and high-strength physical properties, so that once the user starts to suck, the taste of each puff of inhaled smoke can maintain a certain degree of consistency, enabling the atomization core 300 made of ceramic material to fully release the rich taste of the atomization medium and making the sucking taste better. Aerogel ceramic can include one of silicon nitride aerogel or silicon carbide aerogel. The heating element 320 includes one or several of a resistance wire, an etched mesh sheet, and a thick film printed circuit, which is not limited herein.

[0058] In some embodiments, a part of the heating element 320 is attached to the outer peripheral side wall of the substrate 310, and another part is attached to the bottom wall of the substrate 310. For example Figure 8 as shown in, the heating element 320 includes a body 321 and a bent portion 322. The bent portion 322 bends from the bottom end of the body 321 along the radial direction of the body 321 towards the central axis of the body 321. The body 321 is attached to the outer wall of the substrate 310, and the bent portion 322 is attached to the bottom wall of the substrate 310. The lead 330 can be connected to the body 321 or the bent portion 322.

[0059] Preferably, the heating element 320 can be entirely attached to the outer peripheral side wall of the substrate 310. Since the outer peripheral side wall area of the substrate 310 is larger than the bottom wall area, the heating element 320 can contact more atomization medium, thereby improving the atomization efficiency and making the atomization more sufficient.

[0060] Based on the above embodiments, since most or all of the heating element 320 is disposed against the sidewall of the base body 310, it is necessary to ensure that the atomization medium seeps out from the sidewall of the base body 310 as much as possible, and at the same time, it is necessary to avoid the atomization medium seeping out from the bottom wall of the base body 310. Therefore, preferably, a barrier member 340 is provided on the bottom wall of the atomization chamber 310a, and the contour of the barrier member 340 matches the inner sidewall contour of the atomization chamber 310a, so that the outer wall of the barrier member 340 fits against the inner circumferential surface of the atomization chamber 310a. Exemplarily, the barrier member 340 can be a silica gel pad or the like. Thus, due to the provision of the barrier member 340, the atomization medium in the atomization chamber 310a can only seep out from the sidewall of the base body 310 and will not seep out from the bottom wall of the base body 310, avoiding waste of the atomization medium.

[0061] Referring to Figure 9 , Figure 9 FIG. shows a cross-sectional view of the atomization core 300 of another embodiment. In the atomization core 300 of this embodiment, the base body 310 includes a first oil guiding body 311 and a second oil guiding body 312 connected to an axial end of the first oil guiding body 311. The porosity of the first oil guiding body 311 is greater than that of the second oil guiding body 312. The atomization chamber 310a is formed in the first oil guiding body 311, such that the first oil guiding body 311 is tubular, and at least a part of the heating element 320 is sleeved on the outer peripheral surface of the first oil guiding body 311. For example, in one embodiment, the porosity of the first oil guiding portion is 80-90%, and the pore diameter is 0.1-5 μm; the porosity of the second oil guiding portion is 60-80%, and the pore diameter is 5-10 μm.

[0062] Here, it needs to be explained that the porosity refers to the percentage of the pore volume in the bulk material to the total volume of the material in its natural state; another concept corresponding to the porosity of the material is the density of the material; the density indicates the degree to which the material is filled with solids, and quantitatively reflects the content of solids inside the material, and its influence on the material properties is exactly opposite to that of the porosity; the size of the porosity or density of the material directly reflects the degree of compactness of the material; a high porosity of the material indicates a small degree of compactness. Therefore, the larger the porosity, the more the atomizing medium can penetrate from more micropores to the outside of the matrix 310, which also indicates that the oil seepage ability of the first oil guiding body 311 is stronger than that of the second oil guiding body 312. Thus, by dividing the matrix 310 into the first oil guiding body 311 and the second oil guiding body 312 with different porosities, most of the atomizing medium in the atomizing chamber 310a can first seep out from the first oil guiding body 311 to the outside of the matrix 310, and the remaining atomizing medium can be locked in the second oil guiding body 312 and then penetrate into the first oil guiding body 311 from the second oil guiding body 312 and finally completely seep out to the outer wall of the matrix 310. Therefore, it can basically ensure that the atomizing medium in the atomizing chamber 310a is heated and atomized by the heating element 320, preventing the atomizing medium from seeping out from the bottom of the matrix 310 without being heated and atomized by the heating element 320, and avoiding the waste of the atomizing medium.

[0063] In the above embodiment, in order to enable the second oil guiding body 312 to lock more atomizing medium, the size of the second oil guiding body 312 in its own axial direction is designed to be larger, for example, it can be designed to be 3 mm or even larger. And optionally, in another embodiment, a barrier member 340 can also be provided in the oil guiding cavity 203. In this case, the size of the second oil guiding body 312 in its own axial direction can be designed to be smaller, for example, 1 mm, to save material costs. In yet another preferred embodiment, the second oil guiding body 312 can also be a closed structure, that is, no micropores are opened on the second oil guiding body 312, so that the atomizing medium cannot penetrate through the second oil guiding body 312 to the bottom of the matrix 310, thereby preventing the atomizing medium from entering the power supply unit below the atomizer 10 and avoiding the waste of the atomizing medium and the occurrence of safety hazards such as short circuits.

[0064] It can be understood that the first oil guiding body 311 and the second oil guiding body 312 can be integrally formed. By controlling different firing temperatures during firing, the integrally formed first oil guiding body 311 and second oil guiding body 312 can be formed in the axial direction of the matrix 310, so that the porosities of the first oil guiding body 311 and the second oil guiding body 312 are different, or the first oil guiding body 311 can have micropores while the second oil guiding body 312 does not have micropores. In another embodiment, the first oil guiding body 311 and the second oil guiding body 312 can also be two independent components, and the two are connected in layers in the vertical direction and can be connected to each other by bonding or other means, which is not limited herein.

[0065] Finally, it should be noted that the atomization core 300 in the above embodiments can be used in atomizers 10 of any structure, not limited to the structure of the atomizer 10 shown in the embodiments in the figures. The atomizer 10 can also be connected to a power supply unit of any structure and assembled to form an electronic atomization device, which is not limited herein either.

[0066] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered that the scope described in this specification is covered.

[0067] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An atomization core, characterized in that, Comprising: A substrate, an atomization chamber is provided at one end of the substrate along its own axial direction, and a plurality of micropores communicating with the atomization chamber are provided on the outer wall of the substrate, and the micropores are configured to guide an atomization medium, so that the atomization medium in the atomization chamber can seep out to the outer wall of the substrate; A heating element, sleeved on the substrate and attached to the outer wall of the substrate, and the heating element is used to heat and atomize the atomization medium seeping out to the outer wall of the substrate to generate an aerosol.

2. The atomization core according to claim 1, wherein, The substrate includes a first oil guiding body and a second oil guiding body connected to one end of the first oil guiding body along its own axial direction. The porosity of the first oil guiding body is greater than that of the second oil guiding body. The atomization chamber is provided in the first oil guiding body, and at least a part of the heating element is sleeved on the outer peripheral surface of the first oil guiding body.

3. The atomization core according to claim 1 or 2, characterized in that, A barrier member is provided on the bottom wall of the atomization chamber, and the outer wall of the barrier member fits on the inner peripheral surface of the atomization chamber.

4. The atomization core according to claim 1, characterized in that, The heating element includes a main body and a bent portion. The bent portion bends from one end of the main body toward the central axis of the main body along the radial direction of the main body. The main body fits on the side wall of the substrate, and the bent portion fits on the bottom wall of the substrate.

5. An atomizer, characterized in that, Including; A housing, one end of the housing has an opening, the other end is provided with an air outlet hole, and an air flow channel communicating with the air outlet hole is provided in the housing; An atomization unit, provided at the end of the housing having the opening and provided with an air inlet hole communicating with the air outlet hole. The atomization unit and the inner wall of the housing enclose an oil storage chamber for storing an atomization medium; The atomization core according to any one of claims 1-4, the atomization core is provided in the atomization unit, and the atomization chamber of the atomization core communicates with the oil storage chamber and the air flow channel respectively.

6. The atomizer according to claim 5, characterized in that, An air-liquid balance channel is provided on the outer wall of the atomization unit, the air-liquid balance channel communicates with the air inlet hole, and an air-liquid balance member is movably provided on one side of the atomization unit close to the oil storage chamber. The air-liquid balance member isolates the air-liquid balance channel from the oil storage chamber; When external air enters the air-liquid balance channel from the air inlet hole, the air-liquid balance member is configured to be able to move relative to the atomization unit under the air pressure applied by the external air, so that the air-liquid balance channel communicates with the oil storage chamber.

7. The atomizer according to claim 5, characterized in that, The atomization unit includes a base assembly and a support assembly connected to the base assembly. One side of the support assembly and the inner wall of the housing form the oil storage chamber, and the other side of the support assembly and the inner wall of the base assembly form an installation position. The atomization core is provided in the installation position, and one end of the atomization core is connected to the support assembly and the other end is connected to the base assembly; The support assembly is also provided with a separated oil guiding chamber and a gas guiding chamber. The atomization chamber communicates with the oil storage chamber through the oil guiding chamber, and the installation position communicates with the air flow channel through the gas guiding chamber.

8. The atomizer according to claim 7, characterized in that A gas guiding column is provided in the housing. The gas guiding column extends toward the inside of the housing from the end of the housing provided with the air outlet hole, and the end of the gas guiding column away from the air outlet hole is connected to the support assembly. The air flow channel penetrates through the gas guiding column.

9. The atomizer according to claim 8, characterized in that, The support assembly includes a bracket, a first seal, and a second seal. The first seal and the second seal are disposed at opposite ends of the bracket and form the oil guiding cavity with the inner wall of the bracket. The air guiding cavity penetrates through opposite side walls of the bracket. The air guiding column is inserted into the first seal, and one end of the atomization core away from the base assembly is inserted into the second seal.

10. An electronic atomization device, characterized in that, It includes a power supply unit and an atomizer according to any one of claims 5-9, and the atomizer is electrically connected to the power supply unit.

Images