Atomization core and preparation method therefor, atomization assembly and atomization device

Abstract

The present application discloses a method for preparing atomization core, atomization core, atomization assembly, and atomization device, relates to the technical field of electronic atomizers. The atomization core is provided with a heating member, which is processed from a silicon-based material and can heat an atomization substrate to generate aerosol. The heating member includes a first region, a second region, and a third region. The first region is provided with a first electrode contact and a first heat-transferring area, and the second region is provided with a second electrode contact and a second heat-transferring area. The third region is located between the first region and the second region, and is electrically connected to the first electrode contact and the second electrode contact respectively. In the working state, the temperature of the third region is higher than that of the first heat-transferring area and higher than that of the second heat-transferring area, and the third region heats the atomization substrate to generate aerosol. The atomization core provided in the present application eliminates the need for etching a large number of microholes on the heating element, improves the integrity and strength of the heating element, prevents the atomization core from cracking during assembly, and thus ensures the oil conduction and atomization effects of the atomization core.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of atomizer technologies, and specifically to a method for preparing atomization core, atomization core, atomization assembly and atomization device.BACKGROUND

[0002] Existing MEMS (Micro-Electro-Mechanical System) atomization core usually adopt silicon material as its substrate, a metal conductive electrode pattern is sputtered on the substrate for heating, and a large number of microholes are etched on the substrate to absorb atomization substrate. However, etching a large number of microholes on the substrate reduces the strength of the atomization core. These microholes are prone to cracking during assembly process, resulting in abnormal effects of the atomizing core on oil conduction and atomization.SUMMARY

[0003] The present disclosure provides an atomization core capable of solving the technical problem of the abnormal effects of the atomizing core on oil conduction and atomization.

[0004] To solve the technical problem above, present disclosure provide an atomization core, the atomization core is provided with heating member, which is made of silicone-based material and can heat atomization substrate to generate aerosol; the heating member comprises a first region, a second region, and a third region; the first region is provided with a first electrode contact and a first heat-transferring area; the second region is provided with a second electrode contact and a second heat-transferring area; the third region is located between the first region and the second region, and is electrically connected to the first electrode contact and the second electrode contact respectively. In working state, the temperature of the third region is higher than that of the first heat heat-transferring area and higher than that of the second heat-transferring area, and the third region heats the atomization substrate to generate aerosol.

[0005] Present disclosure provides a method for preparing atomization core, the method comprising: Providing a doped conductive semiconductor substrate; Preparing protective layers on two opposite sides of the substrate; Etching electrode blind holes on one side of the substrate; Etching an atomization groove and a limitation groove; Performing oxidation insulation treatment on the substrate; Preparing an electrode plating layer on the inner wall of the electrode blind hole.

[0006] The present application provides an atomization assembly, which comprises a housing, a base, and the atomization core as described above; the base is connected to the end of the housing away from a suction end; the base is provided with an installation cavity, and a heating member and a oil-guiding member of the atomization core are sequentially installed in the installation cavity; the housing is provided with an oil storage chamber, in which an air channel is mounted, and one end of the air channel passes through the oil-guiding member and the heating member. The oil storage chamber stores an atomization substrate, which is adsorbed to the heating element through the oil-guiding element. The heating element heats the atomization substrate to generate aerosol, and the aerosol reaches the suction end through the air channel.

[0007] The present application provides an atomization device, which comprises a power supply component, a control component, and the atomization assembly as described above. The power supply component provides electrical energy for the atomization assembly, and the control component is used to control the working state of the atomization assembly.

[0008] The atomization core provided by the present application is provided with a heating member, which comprises a first region, a second region, and a third region. The third region can heat the atomization substrate to generate aerosol, it is not necessary to etch a large number of micropores on the heating member, which improves the integrity and strength of the heating member and can prevent the atomization core from cracking during assembly, thereby ensuring the oil conduction and atomization effect of the atomization core.BRIEF DESCRIPTION OF THE DRAWINGS

[0009] To better illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings without exerting creative efforts. Fig. 1 is a schematic structural diagram of an embodiment of the atomization core provided by the present application from one viewing angle; Fig. 2 is a schematic structural diagram of an embodiment of the atomization core provided by the present application from another viewing angle; Fig. 3 is a schematic top view of an embodiment of the atomization core provided by the present application; Fig. 4 is a schematic cross-sectional structural diagram of an embodiment of the atomization core provided by the present application from one viewing angle; Fig. 5 is a transient electrothermal simulation analysis diagram of an embodiment of the atomization core provided by the present application; Fig. 6 is a schematic flow diagram of an embodiment of the method for preparing the atomization core provided by the present application; Fig. 7a is a schematic diagram of a substrate in an embodiment of the method for preparing the atomization core provided by the present application; Fig. 7b is a schematic diagram of protective layer preparation in an embodiment of the method for preparing the atomization core provided by the present application; Fig. 7c is a schematic diagram of accommodating cavity preparation in an embodiment of the method for preparing the atomization core provided by the present application; Fig. 7d is a schematic diagram of etching patterns / windows of an atomization groove, a limiting groove and electrode blind holes in an embodiment of the method for preparing the atomization core provided by the present application; Fig. 7e is a schematic diagram of electrode blind hole etching in an embodiment of the method for preparing the atomization core provided by the present application; Fig. 7f is a schematic diagram of atomization groove and limiting groove etching in an embodiment of the method for preparing the atomization core provided by the present application; Fig. 7g is a schematic diagram of substrate oxidation insulation treatment in an embodiment of the method for preparing the atomization core provided by the present application; Fig. 7h is a schematic diagram of electrode plating layer preparation in an embodiment of the method for preparing the atomization core provided by the present application; Fig. 8 is a schematic structural diagram of an embodiment of the atomization assembly provided by the present application; Fig. 9 is a schematic exploded structural diagram of an embodiment of the atomization assembly provided by the present application; Fig. 10 is a schematic cross-sectional structural diagram of an embodiment of the atomization assembly provided by the present application; Fig. 11 is a schematic structural diagram of an embodiment of the housing provided by the present application; Fig. 12 is a schematic structural diagram of an embodiment of the base provided by the present application; Fig. 13a is a schematic structural diagram of an embodiment of the atomization assembly provided by the present application when the suction resistance is minimum; Fig. 13b is a schematic structural diagram of an embodiment of the atomization assembly provided by the present application at a medium suction resistance position; Fig. 13c is a schematic structural diagram of an embodiment of the atomization assembly provided by the present application when the suction resistance is maximum; Fig. 14 is a schematic structural diagram of an embodiment of the atomization device provided by the present application. DETAILED DESCRIPTION

[0010] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be particularly pointed out that the following embodiments are only used to illustrate the present invention, but not to limit the scope of the present invention. Similarly, the following embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0011] In the description of the present invention, the term "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined. The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and shall not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined with "first", "second", or "third" may explicitly or implicitly comprises at least one such feature. All directional indicators (such as up, down, left, right, front, rear...) in the embodiments of the present application are only used to explain the relative positional relationship, movement status, etc., between various components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indicators will correspondingly change accordingly. The terms "comprise", "have" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally further comprises unlisted steps or units, or optionally further comprises other steps or components inherent to the process, method, product, or device.

[0012] In present invention, reference to "an embodiment" means that a specific feature, structure, or characteristic described in connection with the embodiment may be comprised in at least one embodiment of the present invention. The appearance of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0013] The present application provides an atomization core 100. Please refer to FIGS. 1 to 3. The atomization core 100 is provided with a heating member 10, which is made of silicon-based material and can heat the atomization substrate to generate aerosol. The heating member 10 may comprises a first region 11, a second region 12, and a third region 13. The first region 11 is provided with a first electrode contact 111 and a first heat-transferring area 112; the second region 12 is provided with a second electrode contact 121 and a second heat-transferring area 122. The first electrode contact 111 and the second electrode contact 121 are used to connect with conductive posts 340, which supply electrical energy to the heating member 10. The third region 13 is located between the first region 11 and the second region 12, and is electrically connected to the first electrode contact 111 and the second electrode contact 121 respectively. In the working state, the temperature of the third region 13 is higher than that of the first heat-transferring area 112 and higher than that of the second heat-transferring area 122. The third region 13 heats the atomization substrate to generate aerosol. The first heat-transferring area 112 and the second heat-transferring area 122 can preheat the atomization substrate, enhance the fluidity of the atomization substrate, and increase the supply rate of the atomization substrate, thereby improving the atomization efficiency of the third region 13.

[0014] The atomization core 100 provided in the present application is equipped with a heating member 10, which comprises a first region 11, a second region 12, and a third region 13. The third region 13 can heat the atomization substrate to generate aerosol, it is not necessary to etch a large number of micropores on the heating member 10, which improves the integrity and strength of the heating member 10 and can prevent the atomization core 100 from cracking during assembly, thereby ensuring the oil conduction and atomization effect of the atomization core 100.

[0015] The shape of the third region 13 can be set according to the shape requirements of the product; for example, it can be polygonal or elliptical. In one embodiment, as shown in FIG. 3, the third region 13 is annular, with an air channel opening 131 opened in the middle. On one hand, the air channel opening 131 reduces the cross-sectional area of the third region 13, which can increase the electrical resistance value of the third region 13. Since the third region 13 is connected in series with the first region 11 and the second region 12 in the circuit, the third region 13 has a relatively higher heating power, enabling it to quickly heat the atomization substrate to generate aerosol. On the other hand, the air channel opening 131 can be used for installing an air channel tube 312, so that the aerosol generated by atomization can reach the suction end through the air channel tube 312. The first region 11 and the second region 12 are connected to opposite sides of the third region 13 respectively, and are arranged around the outer circumference of the third region 13. The annularly arranged third region 13 can improve heating uniformity, ensuring that the atomization substrate in all directions is fully atomized, thereby enhancing the taste of the aerosol.

[0016] An atomization groove 14 is provided between the third region 13, and the first region 11 and the second region 12. The aerosol generated by atomization in the third region 13 can reach the suction end through the atomization groove 14. The atomization groove 14 is configured as an aerosol channel. On one hand, the atomization groove 14 has a larger size compared to microholes, which can avoid reducing the strength of the heating member 10 caused by opening a large number of microholes in the substrate, and prevent the atomization core 100 from being crushed during assembly. On the other hand, the atomization groove 14 separates the third region 13 from the first region 11 and the second region 12, reduces the contact area between the third region 13 and the first region 11 as well as the second region 12, and can reduce the heat transfer from the third region 13 to the outside, so that the heat is concentrated in the third region 13, thereby improving the atomization efficiency of the heating member 10.

[0017] Both ends of the first region 11 are opposite to both ends of the second region 12 at intervals to form a limiting groove 15. When the atomization core 100 is assembled into the atomization assembly, a limiting post 315 can be clamped in the limiting groove 15. The cooperation between the limiting groove 15 and the limiting post 315 can prevent the atomization core 100 from moving.

[0018] In some embodiments, the heating temperature of the third region 13 is 250~350°C, and the heating temperatures of the first heat-transferring area 112 and the second heat-transferring area 122 are 150~250°C, so that the heating member 10 forms a heating gradient with a higher temperature in the middle and lower temperatures around it. By setting the heating temperature of the third region 13 higher than those of the first heat-transferring area 112 and the second heat-transferring area 122, the heat generation is mainly concentrated in the third region 13, reducing the power consumption of other regions except the third region 13, thereby lowering the overall power consumption of the atomization core 100.

[0019] In one embodiment, at least the third region 13 is an electrothermic material formed by doping a silicon substrate with metal atoms. It is understandable that the first region 11 and the second region 12 can also be electrothermic materials. The heating member 10 is integrally processed and formed from an overall conductive material, thus eliminating the need to process metal conductive electrode patterns on the substrate surface as heating elements and avoiding the detachment of heating elements on the substrate surface due to poor adhesion.

[0020] Specifically, the third region 13 may be an electrothermic material formed by doping a monocrystalline silicon or polycrystalline silicon substrate with metal atoms. Among them, the doped metal atoms are one or more of copper atoms, zinc atoms, and manganese atoms.

[0021] In one embodiment, the electrical resistivity of the electrothermic material is less than 1.0×10 -2< Ω·cm. The heating member 10 is made of a material with good electrical conductivity that enables the integral processing and forming. The third region 13, as well as parts of the first region 11 and the second region 12 connected between the first electrode contact 111 and the second electrode contact 121, can all generate heat. This eliminates the need to process metal conductive electrode patterns on the substrate surface as heating elements, avoiding the detachment of heating elements on the substrate surface due to poor adhesion. Specifically, the electrical resistivity of the electrothermic material may be 1.0×10 -2< Ω·cm, 5.0×10 -3< Ω·cm, 1.0×10 -3< Ω·cm, 5.0×10 -4< Ω·cm, 1.0×10 -4< Ω·cm, etc., which is not specifically limited herein.

[0022] In one embodiment, as shown in FIG. 4, the atomization core 100 is provided with an oil-guiding member 20. The oil-guiding member 20 is in contact with at least the third region 13 and is used to transfer the atomization substrate to the third region 13. The atomization substrate is atomized to generate aerosol under the heating action of the third region 13. The oil-guiding member 20 is a porous fiber material with good oil wettability, such as non-woven fabric, linen, chemical fiber fabric, etc., which can quickly transfer the atomization substrate to the heating member 10.

[0023] Please continue to refer to FIG. 4. A receptacle cavity 16 is provided on the side of the heating member 10 close to the suction end, and the oil-guiding member 20 can be partially accommodated in the receptacle cavity 16. The receptacle cavity 16 is arranged in the middle of the heating member 10, and the third region 13, as well as parts of the first region 11 and the second region 12 adjacent to the third region 13, are located in the receptacle cavity 16. The middle part of the oil-guiding member 20 protrudes toward the heating member 10, and the protruding part of the oil-guiding member 20 is accommodated in the receptacle cavity 16. This increases the volume of the oil-guiding member 20, thereby increasing the atomization substrate capacity of the heating member 10 and ensuring the supply of atomization substrate during the atomization of the heating member 10.

[0024] In some embodiments, the first region 11, the second region 12, and the third region 13 are sheet-shaped, and the thickness of the outer edge portions of the first region 11 and the second region 12 outside the receptacle cavity 16 is 0.3-1.0 mm. If the thickness of the first region 11 and the second region 12 is less than 0.3 mm, the thickness of the first region 11 and the second region 12 is further reduced after opening the receptacle cavity 16, which lowers the overall strength of the heating member 10 and increases the risk of the heating member 10 being crushed during assembly. If the thickness of the first region 11 and the second region 12 is greater than 1.0 mm, their larger thickness results in smaller resistance values and less heat generation during heating, failing to achieve the effect of preheating the atomization substrate. Specifically, the thickness of the outer edge portions of the first region 11 and the second region 12 may be 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, etc.

[0025] In some embodiments, the ratio of the thickness of the third region 13 to the thickness of the outer edge portions of the first region 11 and the second region 12 is 0.5-0.7. If the ratio is less than 0.5, the opening of the receptacle cavity 16 significantly weakens the overall strength of the heating member 10, leading to a risk of the heating member 10 being crushed during assembly. If the ratio is greater than 0.7, the height of the receptacle cavity 16 is relatively small, resulting in a limited atomization substrate capacity of the heating member 10, which makes it difficult to ensure the supply of atomization substrate during atomization.

[0026] To facilitate the assembly of the conductive post 340, in one embodiment, electrode blind holes are provided on the side of the first region 11 and the second region 12 away from the suction end, and the first electrode contact 111 and the second electrode contact 121 are disposed in the electrode blind holes. The end portions of the conductive post 340 can be inserted into the electrode blind holes, enabling automatic assembly for the alignment between the conductive post 340 and the electrode contacts, thereby improving assembly efficiency.

[0027] Further, in one embodiment, an electrode plating layer is provided on the inner wall of the electrode blind hole to reduce the contact resistance between the conductive post 340 inserted in the electrode blind hole and the heating member 10. The material of the electrode plating layer can be one of gold, silver, copper, or silver-palladium alloy with good conductivity, thereby reducing the risk of local high-temperature fusing at the contact between the heating member 10 and the conductive post 340.

[0028] Referring to FIG. 5, COMSOL transient electrothermal simulation analysis shows that the atomization core 100 provided in the present application has excellent electrothermal utilization efficiency and atomization performance. The simulation parameters are set as follows: heating power of 20W and heating duration of 3s. As can be seen from the figure, the high-temperature region is uniformly distributed in the third region 13, with a maximum temperature of 332°C, which is sufficient to meet the atomization requirement of the atomization substrate. The temperatures of the first heat-transferring area 112 and the second heat-transferring area 122 are controlled below 200°C, which not only enhances the fluidity of the atomization substrate but also prevents the atomization substrate from being atomized prematurely. The first heat-transferring area 112, the second heat-transferring area 122, and the third region 13 form a heating gradient, enabling the atomization core 100 to achieve high electrothermal utilization efficiency and atomization efficiency.

[0029] The present application provides a method for preparing an atomization core. Referring to FIG. 6, the preparation method 200 may comprises steps S210-S260: S210: Provide a doped conductive silicon substrate, as shown in FIG. 7a. The doped conductive silicon substrate may be doped monocrystalline silicon or polycrystalline silicon. Since the silicon substrate is an integrally conductive material, there is no need to fabricate metal conductive electrode patterns on the substrate surface as heating elements, thus avoiding the detachment of heating elements on the substrate surface due to poor adhesion. S220: Form protective layers on opposite sides of the silicon substrate, as shown in FIG. 7b. Specifically, a SiO 2 or Si 3 N 4 protective layer can be prepared on the surface of the silicon substrate by means of double-sided thermal oxidation or CVD deposition. S230: Etch electrode blind holes on one side of the silicon substrate. Specifically, plasma etching may first be used to etch the protective layer, forming etching pattern windows for the atomization groove 14, limiting groove 15, and electrode blind holes, as shown in FIG. 7d; then wet etching with a solvent such as KOH is performed to form the electrode blind holes, as shown in FIG. 7e. S240: Etch the atomization groove 14 and the limiting groove 15, as shown in FIG. 7f. Since the atomization groove 14 has a larger dimension compared to microholes, it facilitates etching processing. Specifically, the etching method may be wet etching with a solvent such as KOH. S250: Perform oxidation insulation treatment on the silicon substrate. Thermally oxidize the surface of the substrate to form a SiO 2 protective layer, and insulate the conductive areas outside the electrode blind hole regions, as shown in FIG. 7g. S260: Prepare an electrode plating layer on the inner wall of the electrode blind hole, as shown in FIG. 7h. Specifically, PVD deposition can be used to deposit a layer of one of gold, silver, copper, or silver-palladium alloy with good conductivity in the inner region of the electrode blind hole to reduce contact resistance. Alternatively, the electrode plating layer can be prepared by printing, coating, or other methods to apply a layer of conductive metal paste in the electrode blind hole, followed by sintering for forming itself.

[0030] In some embodiments, the resistivity of the silicon substrate in step S210 is less than 1.0×10 -2< Ω·cm, ensuring good overall conductivity of the silicon substrate. Before step S230, one side of the substrate can be further etched to form a receptacle cavity 16 for accommodating the oil-guiding member 20, as shown in FIG. 7c. Specifically, plasma etching can be used to etch the protective layer to form an etching pattern window for the receptacle cavity 16, followed by wet etching with a solvent such as KOH to form the receptacle cavity 16.

[0031] The present application provides an assembly. Referring to FIGS. 8 to 10, the atomization assembly 300 may comprises a housing 310, a base 320, and the atomization core 100 as described above. The base 320 is connected to the end of the housing 310 away from the suction end, and is provided with an installation chamber 321. The heating member 10 and the oil-guiding member 20 of the atomization core 100 are sequentially installed in the installation chamber 321.

[0032] The housing 310 is provided with an oil storage chamber 311, in which an air channel tube 312 is installed. One end of the air channel tube 312 passes through the oil-guiding member 20 and the heating member 10, and is inserted into the air channel opening 131. The oil-guiding member 20 is a porous fiber material with good oil wettability and oil retention. It can not only quickly transfer the atomization substrate to the heating member 10, but also prevent the atomization substrate from directly entering the air channel tube 312, thus avoiding oil leakage.

[0033] The atomization substrate is stored in the oil storage chamber 311. The atomization substrate is adsorbed to the heating member 10 through the oil-guiding member 20, and the heating member 10 heats the atomization substrate to generate aerosol, which reaches the suction end through the air channel tube 312.

[0034] By arranging the housing 310 to cooperate with the base 320, the atomization core 100 is integrally packaged in the space enclosed by the housing 310 and the base 320, making the atomization assembly 300 an independent module. It can be transplanted to the same type of atomization device only by reserving a circuit socket on the base 320, which enhances the compatibility and practicability of the atomization assembly 300, and is especially suitable for cartridge-replaceable atomization devices.

[0035] The housing 310 can be made of transparent plastic or opaque plastic, and the base 320 can be made of silica gel with good sealing performance or other plastics. The base 320 is in interference fit with the housing 310 to seal the atomization substrate in the oil storage chamber 311.

[0036] In one embodiment, a filter cotton 330 is arranged in the installation cavity 321, as shown in FIGS. 9 and 10. The filter cotton 330 is installed on the side of the atomization core 100 away from the suction end, and one end of the air channel tube 312 abuts against the filter cotton 330. The aerosol enters the air channel tube 312 after being filtered by the filter cotton 330. The filter cotton 330 is a porous fiber material with good oil retention, such as non-woven fabric, linen, chemical fiber fabric, etc. It can absorb a small amount of unatomized atomization substrate and condensate contained in the aerosol, thereby improving the taste of the aerosol and reducing the risk of oil leakage.

[0037] A conductive post 340 is inserted through the base 320, and one end of the conductive post 340 is inserted into the electrode blind hole of the heating member 10. The conductive post 340 can serve as a circuit interface connected to a power supply, facilitating the transplantation of the atomization assembly 300 to the same type of atomization device and enhancing the compatibility and practicability of the atomization assembly 300.

[0038] The housing 310 comprises a mouthpiece 313 and an oil chamber sidewall 314, as shown in FIG. 11. The oil chamber sidewall 314 is connected to the mouthpiece 313, and the mouthpiece 313 and the oil chamber sidewall 314 enclose to form the oil storage chamber 311. The air channel tube 312 is connected to the end of the mouthpiece 313 away from the suction end, and the air channel tube 312 is in communication with the mouthpiece 313.

[0039] An oil observation window 3141 is provided on the oil chamber sidewall 314 to observe the remaining amount of atomization substrate in the oil storage chamber 311. When the housing 310 is made of opaque material, a square groove extending longitudinally along the atomization assembly 300 can be opened on the oil chamber sidewall 314, and transparent silica gel or other transparent materials are filled in the square groove to form the oil observation window 3141, allowing users to check the remaining amount of atomization substrate in the oil storage chamber 311. By observing the remaining atomization substrate, users can easily know the usage status. They can stop using the product when the remaining amount is less than the minimum value set by the product, avoiding a burnt taste caused by insufficient atomization substrate and thus improving user experience.

[0040] A limiting post 315 is connected to the mouthpiece 313, and one end of the limiting post 315 is inserted into the limiting groove 15 of the heating member 10. The cooperation between the limiting post 315 and the limiting groove 15 can prevent the atomization core 100 from shifting.

[0041] A supporting post 316 is connected to the mouthpiece 313, and one end of the supporting post 316 abuts against the position of the electrode blind hole on the heating member 10. The supporting post 316 is arranged corresponding to the insertion position of the conductive post 340, so that the forces exerted by the supporting post 316 and the conductive post 340 on the atomization core 100 are equal in magnitude, opposite in direction, and act along the same straight line. This avoids generating an eccentric moment on the heating member 10 and prevents the heating member 10 from being crushed during installation.

[0042] Referring to FIG. 12 and FIGS. 13a to 13c, an air inlet 322 is opened on the base 320, and an suction resistance adjusting member 350 is covered on the air inlet 322. The suction resistance adjusting member 350 can open or close the air inlet 322, thereby adjusting the size of the channel for external air to enter the atomization assembly 300 and regulating the air resistance of the atomization assembly 300.

[0043] The suction resistance adjusting member 350 comprises an adjusting plate 351, a connecting rod 352, and an adjusting handle 353. The adjusting plate 351 covers the air inlet hole 322, and both ends of the connecting rod 352 are connected to the adjusting plate 351 and the adjusting handle 353 respectively. The adjusting handle 353 is exposed on the outer wall of the housing 310. When the atomization assembly 300 is assembled into the atomization device, the user can adjust the air resistance of the atomization assembly 300 by rotating the adjusting handle 353 exposed outside the housing 310 to experience the taste brought by different air resistances.

[0044] An adjusting plate mounting groove 323 is opened on the base 320, and the adjusting plate mounting groove 323 surrounds the outer periphery of the air inlet hole 322 in a semi-enclosed manner. The adjusting plate 351 is fan-shaped and is accommodated in the adjusting plate mounting groove 323. The adjusting plate 351 can rotate in the adjusting plate mounting groove 323 to open or close the air inlet hole 322.

[0045] In some embodiments, the central angle of the fan-shaped adjusting plate 351 is 210~270 degrees, and correspondingly, the opening central angle of the adjusting plate 351 is 90~150 degrees. conductive posts 340 are inserted on the base 320, and the two conductive posts 340 can be symmetrically distributed on opposite sides of the air inlet hole 322. To avoid affecting the arrangement of the conductive posts 340, the opening central angle of the adjusting plate 351 should not be greater than 150 degrees; in addition, to make the adjustment range of air resistance larger, the opening central angle of the adjusting plate 351 should not be less than 90 degrees. Specifically, the opening central angle of the adjusting plate 351 may be 90 degrees, 100 degrees, 110 degrees, 120 degrees, 130 degrees, 140 degrees, 150 degrees, etc.

[0046] A limiting boss 324 is provided on the base 320, and the limiting boss 324 can limit the rotation stroke of the connecting rod 352. In FIG. 13a, the connecting rod 352 abuts against the limiting boss 324 on one side, and the air inlet hole 322 is fully opened, so the air resistance of the atomization assembly 300 is the smallest at this time; in FIG. 13b, the connecting rod 352 is located in the middle of the limiting bosses 324 on both sides, and the air inlet hole 322 is half opened, so the atomization assembly 300 is at the medium air resistance position at this time; in FIG. 13c, the connecting rod 352 abuts against the limiting boss 324 on the other side, and the air inlet hole 322 is closed, so the air resistance of the atomization assembly 300 is the largest at this time.

[0047] The present application provides an atomization device. Referring to FIG. 14, the atomization device 400 comprises a power supply unit 410, a control unit 420, and the atomization assembly 300 as described above. The power supply unit 410 provides electrical energy to the atomization assembly 300, and the control unit 420 can control the working state of the atomization assembly 300. Specifically, when inhaling through the mouthpiece 313, the control unit 420 senses the negative pressure inside the atomization device 400, and controls the connection between the atomization assembly 300 and the power supply unit 410, so that the atomization core 100 heats the atomization substrate to generate aerosol. When inhalation stops, the control unit 420 controls the disconnection between the atomization assembly 300 and the power supply unit 410, and the atomization core 100 stops heating the atomization substrate.

[0048] The atomization core, its preparation method, atomization assembly, and atomization device provided in the above embodiments have at least the following beneficial effects: 1. The heating member 10 includes a first region 11, a second region 12, and a third region 13. The third region 13 can heat the atomization substrate to generate aerosol, eliminating the need for etching a large number of microholes on the heating member 10. This improves the integrity and strength of the heating member 10, prevents the atomization core 100 from cracking during assembly, and thus ensures the oil conduction and atomization effects of the atomization core 100. 2. An atomization groove 14 is provided between the third region 13, the first region 11, and the second region 12. On one hand, it avoids reducing the strength of the heating member 10 caused by opening a large number of microholes in the substrate, preventing the atomization core 100 from being crushed during assembly. On the other hand, the atomization groove 14 separates the third region 13 from the first region 11 and the second region 12, concentrating heat in the third region 13 and improving the atomization efficiency of the heating member 10. 3. The heating temperature of the third region 13 is 250~350°C, and the heating temperatures of the first heat-transferring area 112 and the second heat-transferring area 122 are 150~250°C. This concentrates heat generation mainly in the third region 13, reducing the power consumption of other regions except the third region 13 and thus lowering the overall power consumption of the atomization core 100. 4. At least the third region 13 is an electrothermic material formed by doping a silicon substrate with metal atoms. There is no need to process metal conductive electrode patterns on the substrate surface as heating elements, avoiding the detachment of heating elements on the substrate surface due to poor adhesion. 5. The first heat-transferring area 112 and the second heat-transferring area 122 can preheat the atomization substrate, enhance the fluidity of the atomization substrate, and increase the supply rate of the atomization substrate, thereby improving the atomization efficiency of the third region 13. 6. A receptacle cavity 16 is provided on the side of the heating member 10 close to the suction end, and the oil guide member 20 can be partially accommodated in the receptacle cavity. This increases the atomization substrate capacity of the heating member 10 and ensures the supply of atomization substrate during the atomization of the heating member 10. 7. An oil observation window 3141 is provided on the oil chamber sidewall 314, allowing users to easily know the usage status of the atomization substrate. It avoids a burnt taste caused by insufficient atomization substrate and improves user experience. 8. A supporting post 316 is connected to the mouthpiece 313, and the supporting post 316 is arranged corresponding to the insertion position of the conductive post 340. This prevents the atomization core 100 from being crushed during installation. 9. A suction resistance adjusting member 350 is covered on the air inlet 322, and the suction resistance adjusting member 350 can open or close the air inlet 322 to adjust the air resistance of the atomization assembly 300, enabling users to experience the taste brought by different air resistances.

[0049] The above descriptions are only partial embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any equivalent device or equivalent process transformation made using the contents of the specification and drawings of the present invention, or direct or indirect application in other related technical fields, shall similarly be included in the patent protection scope of the present invention.

Claims

1. An atomization core (100), characterized in that the atomization core (100) is provided with a heating member (10) , the heating member (10) is made of silicone-based material, the heating member (10) is used to heat the atomization substrate to form an aerosol; the heating member (10) comprises a first region (11) , a second region (12) and a third region (13), the first region (11) is provided with a first electrode contact (111) and a first heat-transferring area (112); the second region (12) is provided with a second electrode contact (121) and a second heat transferring area (122); the third region (13) is disposed between the first region (11) and the second region (12), the third region (13) are respectively electrically connected to the first electrode contact (111) and the second electrode contact (121); Wherein in a working mode, the temperature of the third region (13) is higher than the first heat-transferring area, the third region (13) heats the atomization substrate to form the aerosol.

2. An atomization core (100) according to claim 1, characterized in that the third region (13) is in an annular shape, the intermediate of the third region (13) is provided with an air channel tube (312), the first region (11) and the second region (12) are respectively connected to the opposite sides of the third region (13), the first region (11) and the second region (12) are arranged around the outer circumference of the third region (13).

3. An atomization core (100) according to claim 2, characterized in that atomization groove (14) is arranged between the third region, and the first region and the second region. Both ends of the first region are opposite to both ends of the second region at intervals to form a limiting groove.

4. An atomization core (100) according to claim 1, characterized in that the heating temperature of the third region is in the range of 250 to 350° C; the first heat-transferring area (112) and the second heat-transferring area (122) are in the range of 150 to 250° C.

5. An atomization core (100) according to claim 1, characterized in that at least the third region (13) is made of an electrothermic material formed by doping a silicon substrate with metal atoms.

6. An atomization core (100) according to claim 5, characterized in that the third region (13) is made of an electrothermic material formed by doping a monocrystalline silicon or polycrystalline silicon substrate with metal atoms.

7. An atomization core (100) according to claim 5, characterized in that the doped metal atoms are one or more of copper atoms, zinc atoms, and manganese atoms.

8. An atomization core (100) according to claim 5, characterized in that the electrical resistivity of the electrothermic material is less than 1.0×10-2 Ω • cm.

9. An atomization core (100) according to claim 1, characterized in that the atomization core (100) is provided with oil-guiding member (20), the oil-guiding member (20) is at least contact with the third region (13), the oil-guiding member (20) is used to deliver the atomization substrate to the third region (13), the atomization substrate is atomized to generate aerosol under the heating action of the third region (13).

10. An atomization core (100) according to claim 9, characterized in that a side of the heating member (10) close to suction port is provided with a receptacle cavity (16), the oil-guiding member (20) can be partially accommodated in the receptacle cavity (16); the receptacle cavity (16) is arranged in the middle of the heating member (10); wherein the third region (13), parts of the first region (11) and the second region (12) adjacent to the third region (13), are located in receptacle cavity (16).

11. An atomization core (100) according to claim 10, characterized in that the first region (11), the second region (12) and the third region (13) are sheet-shaped, the thickness of the outer edge portions of the first region (11) and the second region (12) outside the receptacle cavity (16) is 0.3-1.0 mm; the ratio of the thickness of the third region (13) to the thickness of the outer edge portions of the first region (11) and the second region (12) is 0.5-0.7.

12. An atomization core (100) according to claim 1, characterized in that the first region (11) and the second region (12) away from a suction end are provided with electrode blind holes, a first electrode contact (111) and a second electrode contact (112) are arranged in the electrode blind holes.

13. An atomization core (100) according to claim 12, characterized in that an electrode plating layer is provided on the inner wall of the electrode blind hole, the first electrode contact (111) and the second electrode contact (112) to reduce the contact resistance between the conductive post (340) inserted in the electrode blind hole and the heating member (10); wherein the material of the electrode plating layer can be one of gold, silver, copper, or silver-palladium alloy.

14. A method for preparing an atomization core (100), characterized in that the method comprises: Provide a doped conductive silicon substrate; Form protective layers on opposite sides of the silicon substrate; Etch electrode blind holes on one side of the silicon substrate; Etch the atomization groove (14) and the limiting groove (15); Perform oxidation insulation treatment on the silicon substrate; Prepare an electrode plating layer on the inner wall of the electrode blind hole.

15. A method according to the claim 14, characterized in that the resistivity of the silicon substrate is less than 1.0×10-2 Ω • cm, and one side of the silicon substrate is etched with a receptacle cavity (16) for accommodating the oil-guiding member (20).

16. An atomization assembly, characterized in that the assembly comprises: A housing (310); A base (320), and An atomization core (100) according to any one of claims 1-13; wherein the base (320) is connected to an end of the housing (310) away from the suction end, the base (320) is provided with an installation chamber (321), and the heating member (10) and the oil-guiding member (20) of the atomization core (100) are sequentially installed in the installation chamber (321); the housing (310) is provided with an oil storage chamber (311), an air channel tube (312) is installed in the oil storage chamber (311), and one end of the air channel tube (312) passes through the oil-guiding member (20) and the heating member (10); an atomization substrate is stored in the oil storage chamber, the atomization substrate is adsorbed to the heating member (10) through the oil-guiding member (20), the heating member (10) heats the atomization substrate to generate an aerosol, and the aerosol reaches the suction end through the air channel tube (312).

17. An atomization assembly according to claim 16, characterized in that a filter cotton is provided in the installation chamber (321), the filter cotton is arranged at a side of the heating member (10) away from the suction end, one end of the air channel tube (312) abuts against the filter cotton, the aerosol passes though the filter cotton to be filtered before entering the air channel tube (312).

18. An atomization assembly according to claim 16, characterized in that a conductive post (340) is inserted through the base (320), and one end of the conductive post (340) is inserted into the electrode blind hole of the heating member (10).

19. The atomization assembly according to claim 16, characterized in that the housing (310) comprises a mouthpiece (313) and an oil chamber sidewall (314), the oil chamber sidewall (314) is connected to the mouthpiece (313), and the mouthpiece (313) and the oil chamber sidewall (314) enclose to form an oil storage chamber (311); the air channel tube (312) is connected to an end of the mouthpiece (313) away from the suction end, and the air channel tube (312) is in communication with the mouthpiece (313); an oil observation window (3141) is provided on the oil chamber sidewall (314) for observing the remaining amount of atomization substrate in the oil storage chamber (314).

20. The atomization assembly according to claim 19, characterized in that a limiting post (314) is connected to the mouthpiece (313), and one end of the limiting post (315) is inserted into the limiting groove (15) of the heating member (10).

21. The atomization assembly according to claim 19, characterized in that a supporting post (316) is connected to the mouthpiece (313), and one end of the supporting post (316) abuts against a position where the electrode blind hole of the heating member (10) is provided.

22. The atomization assembly according to claim 16, characterized in that an air inlet (322) is provided on the base (320), an air resistance adjusting member is covered on the air inlet (322), and the air resistance adjusting member is able to open or close the air inlet (322).

23. The atomization assembly according to claim 22, characterized in that the air resistance adjusting member comprises an adjusting plate (351), a connecting rod (352), and an adjusting handle (353), the adjusting plate (351) covers the air inlet (322), both ends of the connecting rod (352) are respectively connected to the adjusting plate (351) and the adjusting handle (353), and the adjusting handle (353) is exposed on the outer wall of the housing (310).

24. The atomization assembly according to claim 23, characterized in that a mounting groove (323) of the adjusting plate (351) is provided on the base (320), and the mounting groove (323) surrounds the outer periphery of the air inlet (322) in a semi-enclosed manner; the adjusting plate (351) is fan-shaped, is accommodated in the mounting groove (323), and is able to rotate in the mounting groove (323) to open or close the air inlet (322).

25. The atomization assembly according to claim 24, characterized in that the central angle of the adjusting plate (351) is 210~270 degrees; a limiting boss (324) is provided on the base (310), and the limiting boss (324) is used to limit the rotation stroke of the connecting rod (352).

26. An atomization device, characterized in that the device comprises: a power supply unit, a control unit, and the atomization assembly according to any one of claims 16-25, wherein the power supply unit provides electrical energy to the atomization assembly, and the control unit controls the working state of the atomization assembly.

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