Atomizing core and electronic atomizer

Abstract

The utility model provides an atomizing core which comprises a porous base body, a plurality of heating bodies and an electrode assembly, the porous base body is provided with a plurality of air holes arranged at intervals, and the air holes penetrate through the porous base body; the plurality of heating bodies correspond to the plurality of air holes respectively, and each heating body is arranged on the inner wall of the corresponding air hole; the electrode assembly comprises a main current collecting piece and a plurality of sub current collecting pieces which are not connected with one another, the sub current collecting pieces correspond to the heating bodies respectively, the main current collecting piece is connected with one ends of the heating bodies at the same time, and the sub current collecting pieces are connected with the other ends of the corresponding heating bodies respectively. According to the atomization core, the atomization amount of the atomization core can be freely switched by controlling the number of the heating bodies connected into the circuit, meanwhile, the situation that the same heating body works for a long time can be avoided, carbon deposition is reduced, the atomization taste is guaranteed, and the service life of the atomization core is prolonged. The utility model further provides an electronic atomizer.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic atomizers, in particular to an atomization core and an electronic atomizer. Background Art

[0002] Electronic atomizers are also known as virtual cigarettes, steam cigarettes, electronic cigarettes, aerosol generating devices, etc. They are mainly used to simulate the feeling of smoking without affecting health, so as to help people quit smoking or replace cigarettes. The atomizer core is one of the important components of the electronic atomizer, which is used to heat the atomized oil to generate smoke for users to inhale.

[0003] The atomizer core generally includes a porous ceramic substrate and a heating substrate arranged on the porous ceramic substrate. The heating substrate heats the porous ceramic substrate by direct contact, so that the e-liquid in the porous ceramic substrate is heated and atomized. The current heating substrate generally adopts a single heating structure such as a heating wire or a heating net. On the one hand, due to the limited heating power of the single heating substrate, the atomization efficiency of the atomizer core is limited, and it is difficult to meet the use requirements of a large amount of smoke; on the other hand, since the resistance value of the heating substrate is fixed, the heating power of the heating substrate is fixed under the rated voltage, so the atomization amount of the atomizer core is generally fixed. When the user needs to change the size of the atomization amount, the electronic atomizer cannot meet the demand at this time; on the other hand, when a single heating substrate works for a long time, its surface is prone to carbon deposition (when a single heating substrate works at a high heating power, its working temperature is very high, and it is more likely to produce carbon deposition), thereby affecting the atomization taste. Utility Model Content

[0004] The purpose of the utility model is to provide an atomizer core, which can freely switch the atomization amount of the atomizer core by controlling the number of heating elements connected to the circuit, and can also avoid the same heating element from working for a long time, reduce carbon deposits, ensure the atomization taste, and extend the service life of the atomizer core.

[0005] The utility model provides an atomization core, comprising a porous substrate, a plurality of heating elements and an electrode assembly, wherein the porous substrate is provided with a plurality of pores arranged at intervals, and the pores penetrate the porous substrate; the plurality of heating elements respectively correspond to the plurality of pores, and each of the heating elements is respectively arranged on the inner wall of the corresponding pore; the electrode assembly comprises a main current collecting piece and a plurality of sub-current collecting pieces which are not connected to each other, the plurality of sub-current collecting pieces respectively correspond to the plurality of heating elements, the main current collecting piece is simultaneously connected to one end of the plurality of heating elements, and each of the sub-current collecting pieces is respectively connected to the other end of the corresponding heating element.

[0006] In one achievable manner, among the plurality of heating elements, at least two heating elements have the same resistance value;

[0007] And / or, among the plurality of heating elements, at least two heating elements have different resistance values.

[0008] In an achievable manner, the plurality of pores are all circular holes; among the plurality of heating elements, at least two heating elements have the same resistance value; the diameters of the pores corresponding to the heating elements with the same resistance value are the same;

[0009] And / or, the plurality of pores are all circular holes; among the plurality of heating elements, at least two of the heating elements have different resistance values; among the two heating elements with different resistance values, the diameter of the pores corresponding to the heating element with a smaller resistance value is larger than the diameter of the pores corresponding to the heating element with a larger resistance value.

[0010] In an achievable manner, among the plurality of heating elements, at least two heating elements have the same resistance value; the heating elements with the same resistance value have the same contact area with the corresponding inner wall of the pore;

[0011] And / or, among the multiple heating elements, at least two of the heating elements have different resistance values; among the two heating elements with different resistance values, the contact area between the heating element with a smaller resistance value and the corresponding inner wall of the pore is larger than the contact area between the heating element with a larger resistance value and the corresponding inner wall of the pore.

[0012] In one achievable manner, among the plurality of pores, the shortest distance between inner walls of each two adjacent pores is 0.5 mm to 2.0 mm.

[0013] In one feasible manner, among the multiple heating elements, at least one heating element is a heating net, which is bent to form a columnar structure, and a first current collecting part and a second current collecting part are respectively provided at opposite ends of the heating net; the total current collecting part is connected to the first current collecting part on the heating net, and the corresponding sub-current collecting part is connected to the second current collecting part on the heating net.

[0014] In one feasible manner, among the multiple heating elements, at least one heating element is a heating wire, and the heating wire is a spiral structure; the main current collecting piece is connected to one end of the heating wire, and the corresponding sub-current collecting piece is connected to the other end of the heating wire.

[0015] In one feasible manner, the total current collecting part is a rod-shaped structure, comprising a main rod portion and multiple sub-rod portions, wherein the multiple sub-rod portions respectively correspond to the multiple heating elements; one end of each sub-rod portion is connected to the main rod portion, and the other end of each sub-rod portion is connected to one end of the corresponding heating element.

[0016] In one achievable manner, the porous matrix is ​​a flat columnar structure, the porous matrix has a length direction and a height direction perpendicular to each other, each of the pores is opened along the height direction of the porous matrix, and a plurality of the pores are arranged at intervals along the length direction of the porous matrix;

[0017] Alternatively, the porous matrix is ​​a cylindrical structure, each of the pores is opened along the axial direction of the porous matrix, and a plurality of the pores are evenly spaced and arranged around the center of the porous matrix.

[0018] The utility model also provides an electronic atomizer, comprising the above-mentioned atomization core.

[0019] The atomizer core provided by the utility model is provided with a plurality of pores on a porous substrate, and a heating element is provided on the inner wall of each pore, each heating element is connected in parallel, each heating element can work separately or simultaneously, and the atomization amount of the atomizer core can be freely switched by controlling the number of heating elements connected to the circuit, and at the same time, the same heating element can be prevented from working for a long time, carbon deposits can be reduced, the atomization taste can be ensured, and the service life of the atomizer core can be extended. Moreover, one end of the plurality of heating elements is simultaneously connected to the total current collecting piece, and the other end of the plurality of heating elements is respectively connected to the plurality of sub-current collecting pieces, which can reduce the number of current collecting pieces provided, and facilitate circuit connection and circuit control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the atomizer core in the embodiment of the utility model.

[0021] Figure 2 for Figure 1 Schematic cross-section of .

[0022] Figure 3 for Figure 1 Top view of the .

[0023] Figure 4 It is a schematic diagram of the connection relationship between the heating element and the electrode assembly in the embodiment of the utility model.

[0024] Figure 5 for Figure 4 Bottom view of .

[0025] Figure 6 Schematic diagram of the assembly relationship between the oil-conducting cotton and the porous matrix in the embodiment of the utility model.

[0026] Figure 7 It is a top view of an atomizer core in another embodiment of the utility model.

[0027] Figure 8 It is a top view of an atomizer core in another embodiment of the utility model.

[0028] Fig. 9 This is a schematic diagram of the connection relationship between the heating element and the electrode assembly in another embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] The terms "first", "second", "third", "fourth" and the like (if any) in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0031] The directional words such as up, down, left, right, front, back, top, bottom, etc. (if any) involved in the specification and claims of the utility model are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, and are only for the clarity and convenience of expressing the technical solution. It should be understood that the use of directional words should not limit the scope of protection claimed by the utility model.

[0032] like Figures 1 to 5 As shown, the atomizer core provided by the embodiment of the utility model is used in an electronic atomizer. The atomizer core includes a porous matrix 1, a plurality of (including two) heating elements 2 and an electrode assembly 3. The porous matrix 1 is a porous structure (that is, a plurality of micropores are provided in the porous matrix 1); the porous matrix 1 can be specifically porous ceramic or porous glass, etc. A plurality of pores 11 arranged at intervals are provided on the porous matrix 1, and the pores 11 pass through the porous matrix 1 up and down. The plurality of heating elements 2 respectively correspond to the plurality of pores 11, and the plurality of heating elements 2 are respectively arranged on the inner walls of the plurality of pores 11, that is, each heating element 2 is respectively arranged on the inner wall of the corresponding pore 11, and the heating element 2 is used to generate heat after power is turned on to heat and atomize the atomized liquid (such as tobacco oil). Specifically, during operation, the atomized liquid in the porous matrix 1 can reach the inner wall of the pore 11. When the heating element 2 is powered on, the atomized liquid can be atomized at the inner wall of the pore 11 to generate smoke, and the generated smoke is discharged through the top of the pore 11 (the bottom of the pore 11 is used for air intake).

[0033] Each heating element 2 is connected in parallel. The electrode assembly 3 includes a main current collector 31 and a plurality of sub-current collectors 32 that are not connected to each other (i.e., the plurality of sub-current collectors 32 are arranged at intervals from each other), and the main current collector 31 and the sub-current collectors 32 are arranged at intervals; the plurality of sub-current collectors 32 correspond to the plurality of heating elements 2 respectively, and the main current collector 31 is connected to one end of the plurality of heating elements 2 at the same time, and each sub-current collector 32 is connected to the other end of the corresponding heating element 2 respectively, and the main current collector 31 and the sub-current collector 32 both extend to the bottom of the porous matrix 1. Among them, the main current collector 31 is used to connect to one of the positive and negative electrodes of the power supply (for example, the positive electrode), and each sub-current collector 32 is used to connect to the other electrode of the positive and negative electrodes of the power supply (for example, the negative electrode), so as to realize the parallel connection of each heating element 2. The number of heating elements 2 connected to the circuit (i.e., the number of heating elements 2 in working state) is different, the total heating power of each heating element 2 is different, the atomization amount of the atomization core is also different, and the taste experience is also different; the more the number of heating elements 2 connected to the circuit, the greater the total heating power of each heating element 2, the greater the atomization amount of the atomization core, and the more the use demand of large smoke volume can be met.

[0034] The atomizer core provided by the utility model is provided with a plurality of pores 11 on a porous substrate 1, and a heating element 2 is provided on the inner wall of each pore 11, each heating element 2 is connected in parallel, each heating element 2 can work separately or simultaneously, and the atomization amount of the atomizer core can be freely switched by controlling the number of heating elements 2 connected to the circuit, and at the same time, the same heating element 2 can be prevented from working for a long time, carbon deposits can be reduced, the atomization taste can be ensured, and the service life of the atomizer core can be extended. Moreover, one end of the plurality of heating elements 2 is simultaneously connected to the total current collecting piece 31, and the other end of the plurality of heating elements 2 is respectively connected to the plurality of sub-current collecting pieces 32, which can reduce the number of current collecting pieces (no need to set two current collecting pieces for each heating element 2), and facilitate circuit connection and circuit control.

[0035] like Figure 3 As shown, as an embodiment, among the multiple heating elements 2, at least two heating elements 2 have the same resistance value (for example, the number of heating elements 2 is two, and the resistance values ​​of the two heating elements 2 are the same. For another example, the number of heating elements 2 is three, and the resistance values ​​of the three heating elements 2 are all the same; or the resistance values ​​of two heating elements 2 among the three heating elements 2 are the same, and the resistance value of the other heating element 2 is different). The multiple pores 11 are all circular holes, and the diameters of the pores 11 corresponding to the heating elements 2 with the same resistance value are the same, and the contact areas between the heating elements 2 with the same resistance value and the inner walls of the corresponding pores 11 are the same. With such a configuration, each heating element 2 can have the same heating power, and the oil supply rate of the porous matrix 1 to each heating element 2 is also the same.

[0036] like Figure 3As shown, as an embodiment, the number of the heating element 2 and the number of the pores 11 are both two (of course, in other embodiments, the number of the heating element 2 and the pores 11 can also be more), and the two heating elements 2 are respectively arranged on the inner walls of the two pores 11. The two heating elements 2 have the same resistance value, the two pores 11 have the same diameter, and the contact area between the two heating elements 2 and the corresponding inner walls of the pores 11 is also the same. As an embodiment, the resistance value of each heating element 2 is 1.0 ohm to 1.3 ohm.

[0037] like Figure 7 As shown, as another embodiment, among the plurality of heating elements 2, at least two heating elements 2 have different resistance values ​​(for example, the number of heating elements 2 is two, and the resistance values ​​of the two heating elements 2 are different. For another example, the number of heating elements 2 is three, and the resistance values ​​of the three heating elements 2 are all different; or the resistance values ​​of two heating elements 2 among the three heating elements 2 are the same, and the resistance value of the other heating element 2 is different). The plurality of pores 11 are all circular holes; among the two heating elements 2 with different resistance values, the contact area between the heating element 2 with a small resistance value and the inner wall of the corresponding pore 11 is larger than the contact area between the heating element 2 with a large resistance value and the inner wall of the corresponding pore 11 (specifically, the circuit of the heating element 2 with a small resistance value can be arranged more densely, the circuit thickness can be arranged thicker, etc., so that it has a larger contact area with the inner wall of the pore 11), and the diameter of the pore 11 corresponding to the heating element 2 with a small resistance value is larger than the diameter of the pore 11 corresponding to the heating element 2 with a large resistance value.

[0038] Specifically, due to the different resistance values ​​of the heating elements 2, they have different heating powers (since the heating elements 2 are connected in parallel, according to the formula P=U 2 / R, the greater the resistance, the smaller the heating power), the corresponding atomization amount is different, and the atomization effect is also different. Since the heating power of the heating element 2 with a small resistance value is greater than the heating power of the heating element 2 with a large resistance value, on the one hand, by setting the contact area between the heating element 2 with a small resistance value and the corresponding inner wall of the pore 11 to be larger, that is, the area of ​​the atomization surface is larger, a higher atomization efficiency and a larger atomization amount can be produced; on the other hand, by setting the diameter of the pore 11 corresponding to the heating element 2 with a small resistance value to be larger, the smoke oil in the porous matrix 1 can be supplied to the heating element 2 with a small resistance value more quickly and in larger quantities, and the heating element 2 with a small resistance value has a larger contact area with the corresponding inner wall of the pore 11, so that the heating element 2 with a small resistance value can receive and consume the smoke oil more quickly, so that the oil supply rate of the porous matrix 1 matches the power of the heating element 2, thereby meeting the oil supply needs of heating elements 2 with different powers (the greater the heating power of the heating element 2, the faster the rate at which it consumes the smoke oil, and the greater the oil supply demand).

[0039] like Figure 7As shown, as an embodiment, the number of the heating element 2 and the number of the pores 11 are both two (of course, in other embodiments, the number of the heating element 2 and the pores 11 can also be more), and the two heating elements 2 are respectively arranged on the inner walls of the two pores 11. The resistance values ​​of the two heating elements 2 are different, the contact area between the heating element 2 with a small resistance value and the corresponding inner wall of the pore 11 is larger than the contact area between the heating element 2 with a large resistance value and the corresponding inner wall of the pore 11, and the diameter of the pore 11 corresponding to the heating element 2 with a small resistance value is larger than the diameter of the pore 11 corresponding to the heating element 2 with a large resistance value. As an embodiment, in two heating elements 2 with different resistance values, the difference between the resistance values ​​of the two heating elements 2 is 20% to 30% of the resistance value of the heating element 2 with a small resistance value. For example, if the resistance value of the heating element 2 with a small resistance value is 1 ohm, the resistance value of the heating element 2 with a large resistance value is 1.2 ohms to 1.3 ohms. At the same time, in order to make the resistance of the two heating elements 2 different, the structures of the two heating elements 2 can be set to be the same (for example, both are heating wires or heating meshes), but the materials, thicknesses, etc. of the two heating elements 2 are different; or the structures of the two heating elements 2 can be set to be different (for example, one of the heating elements 2 is a heating wire, and the other heating element 2 is a heating mesh).

[0040] As an implementation manner, the diameter of the pore 11 is 1.8 mm-2.2 mm.

[0041] like Figure 3 As shown, as an embodiment, among the multiple pores 11, the shortest distance d between the inner walls of each two adjacent pores 11 is 0.5mm-2.0mm. Preferably, the shortest distance d between the inner walls of each two adjacent pores 11 is 0.8mm-1.5mm. Specifically, if the shortest distance d between the inner walls of two adjacent pores 11 is too large, the spacing between the pores 11 will be larger and more dispersed, which will not only make the size of the porous matrix 1 too large and occupy a large space, but also be unfavorable for the rapid heating of the porous matrix 1; if the shortest distance d between the inner walls of two adjacent pores 11 is too small, that is, the wall thickness of the porous matrix 1 between the adjacent pores 11 is thin, then the two heating elements 2 will snatch the smoke oil in the porous matrix 1, so that the side where the two heating elements 2 are close to each other is insufficiently supplied with oil, thereby affecting the atomization efficiency, and it is also easy to cause carbon deposits due to insufficient oil supply of the heating element 2.

[0042] like Figure 4 and Figure 5As shown, as an embodiment, among the multiple heating elements 2, at least one heating element 2 is a heating net 21, and the heating net 21 is bent to form a columnar structure so as to match the shape of the inner wall of the pore 11. The first collector 211 and the second collector 212 are respectively provided at opposite ends of the heating net 21, and the first collector 211 and the second collector 212 are arranged at intervals from each other, and both of the first collector 211 and the second collector 212 are sheet-like structures; the main collector 31 is connected to the first collector 211 on the heating net 21, and the corresponding sub-collector 32 is connected to the second collector 212 on the heating net 21.

[0043] Specifically, in this embodiment, the plurality of heating elements 2 are all heating nets 21 , the main current collector 31 is simultaneously connected to the first current collectors 211 on the plurality of heating nets 21 , and each sub-current collector 32 is respectively connected to the second current collector 212 on the corresponding heating net 21 .

[0044] like Fig. 9 As shown, as another embodiment, among the multiple heating elements 2, at least one heating element 2 is a heating wire 22, and the heating wire 22 is a spiral structure. The main current collecting piece 31 is connected to one end of the heating wire 22, and the corresponding sub-current collecting piece 32 is connected to the other end of the heating wire 22. Specifically, the multiple heating elements 2 are all heating wires 22, the main current collecting piece 31 is connected to one end of the multiple heating wires 22 at the same time, and each sub-current collecting piece 32 is respectively connected to the other end of the corresponding heating wire 22. Of course, in other embodiments, the heating element 2 can also be other heating structures. At the same time, in other embodiments, a part of the heating element 2 can also be a heating net 21, and another part of the heating element 2 can be a heating wire 22.

[0045] like Figure 1 , Figure 4 and Figure 5 As shown, as an embodiment, the main current collector 31 and the sub-current collector 32 are both rod-shaped structures. The main current collector 31 includes a main rod 311 and a plurality of sub-rods 312. The main rod 311 is used to connect to a power source, and the plurality of sub-rods 312 correspond to a plurality of heating elements 2 respectively; one end of each sub-rod 312 is connected to the main rod 311, and the other end of each sub-rod 312 is connected to one end of the corresponding heating element 2. Of course, in other embodiments, the main current collector 31 and the sub-current collector 32 can also be other shapes and structures.

[0046] like Figures 1 to 3As shown, as an embodiment, the porous matrix 1 is a flat columnar structure, and the porous matrix 1 has a length direction L, a width direction W and a height direction H that are perpendicular to each other, and each pore 11 is opened along the height direction H of the porous matrix 1, and multiple pores 11 are arranged at intervals along the length direction L of the porous matrix 1. When the number of pores 11 is greater than or equal to three, the multiple pores 11 are arranged at equal intervals along the length direction L of the porous matrix 1. At the same time, the outer wall of the porous matrix 1 is a curved surface structure, so that the external smoke oil can be more evenly and quickly transferred to the porous matrix 1.

[0047] like Figure 8 As shown, as another embodiment, the porous matrix 1 is a cylindrical structure, each pore 11 is opened along the axial direction of the porous matrix 1, and multiple pores 11 are evenly spaced and arranged around the center of the porous matrix 1 (this arrangement is generally applied to the case where the number of pores 11 is greater than or equal to three). Of course, in other embodiments, the porous matrix 1 can also be other shapes and structures, and the pores 11 can also be arranged in other ways.

[0048] like Figure 2 As shown, as an embodiment, the heating element 2 extends from the bottom end of the pore 11 to the top end of the pore 11, that is, the extension height of the heating element 2 is the same as or similar to the height of the pore 11, so that the heating element 2 has a larger contact area with the inner wall of the pore 11, that is, the area of ​​the atomization surface is larger, and the heating uniformity is better.

[0049] As an implementation mode, the heating element 2 is provided with hooks (not shown), which are embedded in the porous matrix 1 to improve the connection strength between the heating element 2 and the porous matrix 1 and prevent the heating element 2 from falling off.

[0050] As an implementation manner, the heating element 2 can be made of metal materials such as stainless steel (such as 310 stainless steel, 316 stainless steel, etc.), titanium, chromium, nickel-chromium, iron-chromium-aluminum, etc.

[0051] As an embodiment, the porous matrix 1 is a porous ceramic body; the porosity of the porous matrix 1 is 55% to 65%, the median pore size of the porous matrix 1 is 25 microns to 40 microns, the bending strength of the porous matrix 1 is 20MPa to 35MPa, and the oil delivery rate (VG) of the porous matrix 1 is 2.5 to 5uL / s, so that the porous matrix 1 has a sufficient liquid supply speed.

[0052] As an embodiment, the components of the porous matrix 1 include a skeleton material and a high-temperature sintering aid, wherein the skeleton material is one or more of diatomite, cordierite, silica powder, quartz powder, and kaolin, and the high-temperature sintering aid is glass powder (for example, SiO2-B2O3-ZnO glass powder, with a Tg temperature of 450°C-550°C). The weight percentages of the components are: 45-70% for the skeleton material and 30-55% for the high-temperature sintering aid.

[0053] As an embodiment, the porous matrix 1 is formed by dewaxing and sintering a ceramic green body; the components of the ceramic green body include a skeleton material, a high-temperature sintering aid, a pore-forming agent, paraffin and stearic acid. The skeleton material is one or more of diatomaceous earth, cordierite, silica powder, quartz powder, and kaolin, the high-temperature sintering aid is glass powder (for example, SiO2-B2O3-ZnO glass powder, Tg temperature is 450℃-550℃), and the pore-forming agent is one or more of PMMA, PS balls, starch, lignin, graphite and carbon powder. The weight percentages of each component are: 30-60% for skeleton material, 10%-50% for high-temperature sintering aid, 30%-50% for pore-forming agent, 10%-20% for paraffin, and 2%-10% for stearic acid, and the sum of the weight percentages of each component is 100%.

[0054] As an embodiment, the preparation method of the atomizer core is:

[0055] S10: mixing and ball-milling a certain amount of framework material, high-temperature sintering aid and pore-forming agent (specifically, the framework material, high-temperature sintering aid and pore-forming agent can be placed in the same container, and then zirconium balls are added for mixed ball-milling) to obtain a mixed powder; the mixed ball-milling time can be 3-8 hours;

[0056] S20: mixing the above mixed powder with a certain amount of paraffin wax and stearic acid to obtain a ceramic slurry; the mixing and stirring temperature is 60° C.-120° C., and the mixing and stirring time is 2-8 hours;

[0057] S30: placing the heating element 2 connected with the electrode assembly 3 in advance in a grouting machine, and then injecting the ceramic slurry into the grouting machine to obtain a ceramic green body by hot die casting;

[0058] S40: Dewaxing and sintering the ceramic green body at a preset temperature, and obtaining an atomizing core after cooling.

[0059] As an embodiment, the above-mentioned S30 step specifically includes: placing the heating element 2 connected to the electrode assembly 3 in a grouting machine in advance, and then injecting the above-mentioned ceramic slurry into the grouting machine; setting the insulation temperature of the grouting machine to 55°C-80°C, stirring and degassing for 30-60 minutes; under a preset pressure, hot-die casting the ceramic slurry, wherein the preset pressure range can specifically be 0.3-0.8Mpa.

[0060] As an embodiment, in the above step S40, the wax is drained by siphoning, the wax draining temperature is 180℃-280℃, and the wax draining time is 1-6 hours; preferably, the wax draining temperature is 200℃-250℃, and the wax draining time is 2-4 hours. The sintering temperature is 500℃-800℃, and the sintering time is 2-8 hours; preferably, the sintering temperature is 600℃-750℃, and the sintering time is 3-5 hours.

[0061] like Figure 6 As shown, this embodiment also provides an electronic atomizer, including the above-mentioned atomizer core. The electronic atomizer also includes oil-conducting cotton 4, which is sleeved outside the porous matrix 1, and the inner wall of the oil-conducting cotton 4 is in contact with the outer wall of the porous matrix 1. The oil-conducting cotton 4 is used to transfer the smoke oil on the oil storage bin (not shown) or the oil storage cotton (not shown) to the porous matrix 1 (the outer side of the oil-conducting cotton 4 generally needs to be provided with an oil storage bin or oil storage cotton for storing smoke oil).

[0062] The atomizer core provided in this embodiment is provided with a plurality of pores 11 on a porous substrate 1, and a heating element 2 is provided on the inner wall of each pore 11, each heating element 2 is connected in parallel, and each heating element 2 can work separately or simultaneously. By controlling the number of heating elements 2 connected to the circuit, the atomization amount of the atomizer core can be freely switched, and at the same time, the same heating element 2 can be prevented from working for a long time, carbon deposits can be reduced, the atomization taste can be ensured, and the service life of the atomizer core can be extended. Moreover, one end of the plurality of heating elements 2 is simultaneously connected to the total current collecting piece 31, and the other end of the plurality of heating elements 2 is respectively connected to the plurality of sub-current collecting pieces 32, which can reduce the number of current collecting pieces provided, and facilitate circuit connection and circuit control.

[0063] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An atomizer core, characterized in that: The invention comprises a porous substrate (1), a plurality of heating elements (2) and an electrode assembly (3); the porous substrate (1) is provided with a plurality of pores (11) arranged at intervals, the pores (11) passing through the porous substrate (1); the plurality of heating elements (2) respectively correspond to the plurality of pores (11), and each heating element (2) is respectively arranged on the inner wall of the corresponding pore (11); the electrode assembly (3) comprises a main current collector (31) and a plurality of sub-current collectors (32) which are not connected to each other, the plurality of sub-current collectors (32) respectively correspond to the plurality of heating elements (2), the main current collector (31) is simultaneously connected to one end of the plurality of heating elements (2), and each sub-current collector (32) is respectively connected to the other end of the corresponding heating element (2).

2. The atomizer core according to claim 1, characterized in that: Among the plurality of heating elements (2), at least two heating elements (2) have the same resistance value; And / or, among the plurality of heating elements (2), at least two heating elements (2) have different resistance values.

3. The atomizer core according to claim 1, characterized in that: The plurality of pores (11) are all circular holes; among the plurality of heating elements (2), at least two heating elements (2) have the same resistance value; the diameters of the pores (11) corresponding to the heating elements (2) with the same resistance value are the same; And / or, the plurality of pores (11) are all circular holes; among the plurality of heating elements (2), at least two of the heating elements (2) have different resistance values; among the two heating elements (2) with different resistance values, the diameter of the pore (11) corresponding to the heating element (2) with a smaller resistance value is larger than the diameter of the pore (11) corresponding to the heating element (2) with a larger resistance value.

4. The atomizer core according to claim 1, characterized in that: Among the plurality of heating elements (2), at least two heating elements (2) have the same resistance value; the heating elements (2) having the same resistance value have the same contact area with the inner wall of the corresponding pore (11); And / or, among the plurality of heating elements (2), at least two of the heating elements (2) have different resistance values; among the two heating elements (2) with different resistance values, the contact area between the heating element (2) with a smaller resistance value and the inner wall of the corresponding pore (11) is larger than the contact area between the heating element (2) with a larger resistance value and the inner wall of the corresponding pore (11).

5. The atomizer core according to claim 1, characterized in that: Among the plurality of pores (11), the shortest distance (d) between the inner walls of each two adjacent pores (11) is 0.5 mm to 2.0 mm.

6. The atomizer core according to claim 1, characterized in that: Among the plurality of heating elements (2), at least one of the heating elements (2) is a heating net (21); the heating net (21) is bent to form a columnar structure; and opposite ends of the heating net (21) are respectively provided with a first current collecting portion (211) and a second current collecting portion (212); the main current collecting component (31) is connected to the first current collecting portion (211) on the heating net (21), and the corresponding sub-current collecting component (32) is connected to the second current collecting portion (212) on the heating net (21).

7. The atomizer core according to claim 1, characterized in that: Among the plurality of heating elements (2), at least one of the heating elements (2) is a heating wire (22), and the heating wire (22) is a spiral structure; the main current collecting piece (31) is connected to one end of the heating wire (22), and the corresponding sub-current collecting piece (32) is connected to the other end of the heating wire (22).

8. The atomizer core according to claim 1, characterized in that: The total current collecting part (31) is a rod-shaped structure, comprising a main rod portion (311) and a plurality of sub-rod portions (312), wherein the plurality of sub-rod portions (312) respectively correspond to a plurality of heating elements (2); one end of each sub-rod portion (312) is connected to the main rod portion (311), and the other end of each sub-rod portion (312) is connected to one end of the corresponding heating element (2).

9. The atomizer core according to any one of claims 1 to 8, characterized in that: The porous matrix (1) is a flat columnar structure, the porous matrix (1) has a length direction (L) and a height direction (H) that are perpendicular to each other, each of the pores (11) is opened along the height direction (H) of the porous matrix (1), and a plurality of the pores (11) are arranged at intervals along the length direction (L) of the porous matrix (1); Alternatively, the porous matrix (1) is a cylindrical structure, each of the pores (11) is opened along the axial direction of the porous matrix (1), and a plurality of the pores (11) are evenly spaced and arranged around the center of the porous matrix (1).

10. An electronic atomizer, characterized in that: The invention comprises an atomizing core as claimed in any one of claims 1 to 9.

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