Composite aerogel atomizing core, atomizing assembly and electronic atomizing device
By adding or embedding an aerogel layer over or inside the ceramic atomizing core, the porosity and pore size are adjusted, solving the problems of low oil conduction rate and short lifespan of the ceramic atomizing core, and achieving the effects of efficient oil conduction and extended service life.
Patent Information
- Application Number
- CN202422282961.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-09-19
AI Technical Summary
Existing ceramic atomizing cores suffer from problems such as low oil conduction rate, easy dry burning failure, and short service life. High porosity leads to leakage of the atomizing matrix, while low porosity leads to insufficient liquid supply.
A composite aerogel atomizing core is adopted, which is formed by an outer or inner layer of aerogel layer. The porosity and pore size of the aerogel layer are designed to be better than those of the ceramic layer. The resulting composite structure is used to regulate the oil guiding speed and intensity, and avoid leakage of the atomizing matrix and insufficient liquid supply.
It improves the strength and oil conduction performance of the atomizer core, avoids problems such as atomizer matrix leakage and insufficient liquid supply, and extends service life.
Smart Images
Figure CN223473119U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of atomization technology, and in particular to a composite aerogel atomizing core, atomizing components, and an electronic atomization device. Background Technology
[0002] Electronic cigarette devices generally consist of several basic components: cartridges and the device itself. The device contains a power source, such as a battery, to power the cartridges. The cartridge includes an e-liquid tank and an atomizer coil. The tank is pre-loaded with an atomizing matrix containing varying amounts of glycerin (VG), propylene glycol (PG), flavorings, etc. It may also contain varying amounts of nicotine and / or other chemicals. The atomizer coil includes a wicking element and a heating element. The wicking element has interconnected micropores that transfer the atomizing matrix from the tank to the heating element via capillary action. When air flows into the device, the resulting airflow triggers an airflow sensor, activating the heating element. The heating element, located within the atomization channel of the coil, heats the atomizing matrix, generating an aerosol. This aerosol is then carried by the airflow through the atomization channel and ultimately inhaled by the user. Currently, most electronic cigarette atomizer coils on the market use ceramic coils. Traditional ceramic atomizing cores still have poor overall performance, with defects such as low oil conduction rate, easy dry burning failure, and short service life. Utility Model Content
[0003] Therefore, it is necessary to provide a composite aerogel atomizing core. The composite aerogel atomizing core of this invention improves the strength of the atomizing core while possessing the advantage of high porosity, thus avoiding the drawbacks of both high and low porosity.
[0004] One embodiment of this application provides a composite aerogel atomizing core.
[0005] A composite aerogel atomizing core includes an annular porous ceramic layer, an annular aerogel layer, and a heating element. The aerogel layer is connected to the porous ceramic layer, and the heating element is disposed on the inner wall of the porous ceramic layer or the aerogel layer. The porosity of the aerogel layer is greater than that of the porous ceramic layer, and the pore size of the aerogel layer is smaller than that of the porous ceramic layer.
[0006] In some embodiments, the aerogel layer is sleeved on the outer wall of the porous ceramic layer, and the heating element is disposed in the annular channel of the porous ceramic layer, so that the porous ceramic layer, the aerogel layer and the heating element are sequentially sleeved and connected.
[0007] In some embodiments, the porous ceramic layer is sleeved on the outer wall of the aerogel layer, and the heating element is disposed in the annular channel of the aerogel layer, so that the aerogel layer, the porous ceramic layer and the heating element are sequentially sleeved and connected.
[0008] In some embodiments, the aerogel layer is connected to the inner and outer walls of the porous ceramic layer, and the heating element is disposed in the annular channel of the aerogel layer, so that the aerogel layer, the porous ceramic layer, the aerogel layer and the heating element are sequentially nested and connected.
[0009] In some embodiments, the porous ceramic layer has a tubular structure with openings at both ends;
[0010] And / or, the aerogel layer has a tubular structure with open ends.
[0011] In some embodiments, the composite aerogel atomizing core satisfies at least one of the following conditions:
[0012] (1) The porosity of the aerogel layer is in the range of 60% to 90%, and the porosity of the aerogel layer is preferably 70%;
[0013] (2) The pore size of the aerogel layer is 0.1 μm to 10 μm, and the pore size of the aerogel layer is preferably 2 μm;
[0014] (3) The thickness of the aerogel layer is in the range of 0.5 mm to 2 mm, and the thickness of the aerogel layer is preferably 1.1 mm;
[0015] (4) The compressive strength of the aerogel layer is in the range of 4MPa to 50MPa, and the compressive strength of the aerogel layer is preferably 20MPa.
[0016] In some embodiments, the composite aerogel atomizing core satisfies at least one of the following conditions:
[0017] (1) The porosity of the porous ceramic layer is in the range of 50% to 70%, and the porosity of the porous ceramic layer is preferably 60%;
[0018] (2) The pore size of the porous ceramic layer is 10μm to 60μm, and the pore size of the porous ceramic layer is preferably 30μm;
[0019] (3) The thickness of the porous ceramic layer is in the range of 0.5 mm to 1.5 mm, and the thickness of the porous ceramic layer is preferably 1.5 mm;
[0020] (4) The compressive strength of the porous ceramic layer is in the range of 5MPa to 50MPa, and the compressive strength of the porous ceramic layer is preferably 10MPa.
[0021] In some embodiments, air guide holes are respectively provided at corresponding positions on the aerogel layer and the porous ceramic layer, and the pore diameter of the air guide holes is 0.1 mm to 1 mm.
[0022] In some embodiments, the heating element includes a heating wire, a first lead and a second lead, the heating wire having a ring-shaped mesh structure, and the first lead and the second lead being respectively connected to the heating wire.
[0023] In some embodiments, the composite aerogel atomizing core satisfies at least one of the following conditions:
[0024] (1) The material used to prepare the porous ceramic layer is selected from one or more of silicon oxide ceramics, alumina ceramics, silicon carbide ceramics, and cordierite ceramics;
[0025] (2) The material used to prepare the aerogel layer is selected from one or both of silicon nitride aerogel and silicon carbide aerogel.
[0026] One embodiment of this application provides an atomizing component.
[0027] An atomizing component includes the composite aerogel atomizing core described above or prepared by the above method. The atomizing component further includes a sealing base, an oil tank shell, a sealing element, a limiting cap, and conductive terminals. The oil tank shell and the sealing base enclose an oil storage cavity. The oil tank shell has a smoke inlet. A smoke guide tube extends from the smoke inlet into the oil storage cavity. An atomization channel is provided in the smoke guide tube. One end of the limiting cap abuts against the smoke guide tube, and the other end is mounted on the base. The composite aerogel atomizing core is disposed within the limiting cap and communicates with the atomization channel. The limiting cap has an oil inlet hole, through which the atomizing matrix in the oil storage cavity is conducted to the composite aerogel atomizing core.
[0028] In some embodiments, an oil-absorbing cotton is also disposed between the composite aerogel atomizing core and the sealing base.
[0029] In some embodiments, a pad is also disposed between the oil-absorbing cotton and the composite aerogel atomizing core.
[0030] One embodiment of this application provides an electronic atomizing device.
[0031] An electronic atomizing device includes a power supply component and an atomizing component, wherein the power supply component is electrically connected to the atomizing component to supply power to the atomizing component.
[0032] The aforementioned composite aerogel atomizing core has the advantages of high strength and high porosity. It can avoid the problem of excessively high atomization matrix guidance speed leading to leakage due to excessively high porosity, and avoid the problem of insufficient liquid supply due to excessively low porosity, which affects the oil guiding speed and atomization effect. Attached Figure Description
[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.
[0034] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.
[0035] Figure 1 This is a schematic diagram of the composite aerogel atomizing core structure according to an embodiment of the present invention;
[0036] Figure 2 This is a schematic diagram of the explosion of the composite aerogel atomizing core according to an embodiment of the present invention;
[0037] Figure 3 This is a side cross-sectional view of the composite aerogel atomizing core according to an embodiment of the present invention;
[0038] Figure 4 This is a schematic diagram of the composite aerogel atomizing core structure according to another embodiment of the present invention;
[0039] Figure 5 This is a schematic diagram of the explosion of the composite aerogel atomizing core according to another embodiment of the present invention;
[0040] Figure 6 This is a side cross-sectional view of the composite aerogel atomizing core according to another embodiment of the present invention;
[0041] Figure 7 This is a schematic diagram of the composite aerogel atomizing core structure according to another embodiment of the present invention;
[0042] Figure 8 This is a schematic diagram of the explosion of the composite aerogel atomizing core according to another embodiment of the present invention;
[0043] Figure 9 This is a side cross-sectional view of the composite aerogel atomizing core according to another embodiment of the present invention;
[0044] Figure 10This is a schematic diagram of an atomizing component according to an embodiment of the present invention;
[0045] Figure 11 This is a schematic diagram of an electronic cigarette according to an embodiment of the present invention.
[0046] Explanation of reference numerals in the attached figures
[0047] 10. Aerogel atomizing core; 100. Porous ceramic layer; 200. Aerogel layer; 300. Heating element; 301. Heating wire; 320. First lead wire; 303. Second lead wire; 400. Air guide hole; 20. Atomizing assembly; 21. Sealing base; 22. Oil tank shell; 23. Seal; 24. Limiting cap; 25. Conductive terminal; 26. Oil storage chamber; 27. Smoke guide tube; 28. Atomizing channel; 29. Smoke inlet; 210. Oil-absorbing cotton; 211. Pad; 30. Power supply assembly. Detailed Implementation
[0048] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0049] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0051] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0052] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0053] In this application, when numerical intervals (i.e., numerical ranges) are involved, unless otherwise specified, the distribution of selectable numerical values within the numerical interval is considered continuous, and includes the two endpoints of the numerical interval (i.e., the minimum and maximum values), as well as every numerical value between these two endpoints. Unless otherwise specified, when a numerical interval refers only to integers within that numerical interval, it includes the two endpoint integers of the numerical range, as well as every integer between the two endpoints, which is equivalent to directly listing every integer. When multiple numerical ranges are provided to describe features or characteristics, these numerical ranges can be merged. In other words, unless otherwise specified, the numerical ranges disclosed in this application should be understood to include any and all subranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, percentage, ratio, etc. The term "numerical interval" can be broadly included to include percentage intervals, ratio intervals, proportion intervals, etc.
[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0055] This application provides a composite aerogel atomizing core 10 to solve the problems of excessively high guiding speed of the atomizing matrix due to the high porosity of existing ceramic atomizing cores, leading to atomizing matrix leakage, and insufficient liquid supply due to the low porosity of ceramic atomizing cores, affecting the oil guiding speed and atomization effect. The composite aerogel atomizing core 10 will be described below with reference to the accompanying drawings.
[0056] The composite aerogel atomizing core 10 provided in this application embodiment is exemplary; please refer to [link to example]. Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of the composite aerogel atomizing core 10 provided in an embodiment of this application. The composite aerogel atomizing core 10 of this application can be used for atomizing components 20 and electronic cigarette manufacturing, etc. To more clearly illustrate the structure of the composite aerogel atomizing core 10, the composite aerogel atomizing core 10 will be described below in conjunction with the accompanying drawings.
[0057] For example, please refer to Figure 1 As shown, a composite aerogel atomizing core 10 includes an annular porous ceramic layer 100, an annular aerogel layer 200, and a heating element 300. The aerogel layer 200 is connected to the porous ceramic layer 100. The heating element 300 is disposed on the inner wall of either the porous ceramic layer 100 or the aerogel layer 200. The porosity of the aerogel layer 200 is greater than that of the porous ceramic layer 100, and the pore size of the aerogel layer 200 is smaller than that of the porous ceramic layer 100, so that the oil conduction speed of the aerogel layer 200 to the atomizing matrix is less than that of the porous ceramic layer 100 to the atomizing matrix.
[0058] In some of these embodiments, see Figures 1-3 As shown, the aerogel layer 200 is sleeved on the outer wall of the porous ceramic layer 100, and the heating element 300 is disposed in the annular channel of the porous ceramic layer 100, so that the porous ceramic layer 100, the aerogel layer 200 and the heating element 300 are sequentially sleeved and connected.
[0059] In some of these embodiments, see Figures 4-6 As shown, the porous ceramic layer 100 is sleeved on the outer wall of the aerogel layer 200, and the heating element 300 is disposed in the annular channel of the aerogel layer 200, so that the aerogel layer 200, the porous ceramic layer 100 and the heating element 300 are sequentially sleeved and connected.
[0060] In some of these embodiments, see Figures 7-9 As shown, the inner and outer walls of the porous ceramic layer 100 are respectively connected to the aerogel layer 200, and the heating element 300 is disposed in the annular channel of the aerogel layer 200, so that the aerogel layer 200, the porous ceramic layer 100, the aerogel layer 200 and the heating element 300 are sequentially nested and connected.
[0061] In some of these embodiments, see Figure 1 , Figure 4 or Figure 7 As shown, both the porous ceramic layer 100 and the aerogel layer 200 are cylindrical tubes. The porous ceramic layer 100 and the aerogel layer 200 are generally coaxial and aligned around a central axis (not shown in the figure).
[0062] In some of these embodiments, see Figure 1 , Figure 4 or Figure 7 As shown, the porous ceramic layer 100 has a tubular structure with openings at both ends.
[0063] In some of these embodiments, see Figure 1 , Figure 4 or Figure 7 As shown, the aerogel layer 200 has a tubular structure with openings at both ends.
[0064] In some embodiments, the porosity of the aerogel layer 200 ranges from 60% to 90%. The porosity values of the aerogel layer 200 include, but are not limited to, 60%, 65%, 70%, 75%, 80%, 85%, 90%, and any range between the two mentioned above.
[0065] For example, in one specific instance, the porosity of the aerogel layer 200 is preferably 70%.
[0066] In some embodiments, the pore size of the aerogel layer 200 is 0.1 μm to 10 μm. The pore size of the aerogel layer 200 includes, but is not limited to, 0.1 μm, 0.5 μm, 1 μm, 3 μm, 5 μm, 6 μm, 8 μm, 9 μm, 10 μm, and any range between the two.
[0067] For example, in one specific instance, the pore size of the aerogel layer 200 is preferably 2 μm.
[0068] In some embodiments, the thickness of the aerogel layer 200 ranges from 0.5 mm to 2 mm. The thickness of the aerogel layer 200 includes, but is not limited to, 0.5 mm, 1 mm, 1.5 mm, 2 mm, and any range between the two mentioned above.
[0069] For example, in one specific instance, the thickness of the aerogel layer 200 is preferably 1.1 mm.
[0070] In some embodiments, the compressive strength of the aerogel layer 200 ranges from 4 MPa to 50 MPa. The compressive strength values of the aerogel layer 200 include, but are not limited to, 4 MPa, 10 MPa, 15 MPa, 20 MPa, 30 MPa, 40 MPa, 50 MPa, and any range between the two mentioned above.
[0071] For example, in a specific instance, the compressive strength of the aerogel layer 200 is preferably 20 MPa.
[0072] In some embodiments, the porosity of the porous ceramic layer 100 ranges from 50% to 70%. The porosity values of the porous ceramic layer 100 include, but are not limited to, 50%, 55%, 60%, 65%, 70%, and any range between the two.
[0073] For example, in one specific instance, the porosity of the porous ceramic layer 100 is preferably 60%.
[0074] In some embodiments, the pore size of the porous ceramic layer 100 is 10 μm to 60 μm. The pore size of the porous ceramic layer 100 includes, but is not limited to, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, and any range between the two mentioned above.
[0075] For example, in one specific instance, the pore size of the porous ceramic layer 100 is preferably 30 μm.
[0076] In some embodiments, the thickness of the porous ceramic layer 100 ranges from 0.5 mm to 1.5 mm. The thickness of the porous ceramic layer 100 includes, but is not limited to, 0.5 mm, 1 mm, 1.5 mm, and any range between the two.
[0077] For example, in one specific instance, the thickness of the porous ceramic layer 100 is preferably 1.5 mm.
[0078] In some embodiments, the compressive strength of the porous ceramic layer 100 ranges from 5 MPa to 50 MPa. The compressive strength values of the porous ceramic layer 100 include, but are not limited to, 5 MPa, 10 MPa, 15 MPa, 20 MPa, 30 MPa, 40 MPa, 50 MPa, and any range between the two mentioned above.
[0079] For example, in a specific instance, the compressive strength of the porous ceramic layer 100 is preferably 10 MPa.
[0080] In some of these embodiments, see Figure 2 , Figure 5 , Figure 8 As shown, air guide holes 400 are respectively provided at corresponding positions on the aerogel layer 200 and the porous ceramic layer 100.
[0081] In some embodiments, the diameter of the air guide hole 400 is 0.1 mm to 1 mm. The diameter of the air guide hole 400 includes, but is not limited to, 0.1 mm, 0.2 mm, 0.5 mm, 0.8 mm, 1 mm, and any range between the two mentioned above.
[0082] In some of these embodiments, see Figure 3 , Figure 6 , Figure 9 As shown, the heating element 300 includes a heating wire 301, a first lead 320, and a second lead 303. The heating wire 301 has an annular mesh structure, and the first lead 320 and the second lead 303 are respectively connected to the heating wire 301.
[0083] In some embodiments, the first lead 320 and the second lead 303 are respectively used for external power supply. When the porous ceramic layer 100 is sleeved on the heating wire 301, the outer diameter of the heating wire 301 is equal to the inner diameter of the porous ceramic layer 100. When the aerogel layer 200 is sleeved on the heating wire 301, the outer diameter of the heating wire 301 is equal to the inner diameter of the aerogel layer 200.
[0084] In some embodiments, the porous ceramic layer 100 is made of one or more of the following materials: silica ceramics, alumina ceramics, silicon carbide ceramics, and cordierite ceramics.
[0085] In some embodiments, the material used to prepare the aerogel layer 200 is selected from one or both of silicon nitride aerogel and silicon carbide aerogel.
[0086] One embodiment of this application provides a method for preparing a composite aerogel atomizing core 10.
[0087] It should be noted that, unless otherwise stated, the reaction steps may be performed in the order described herein or not. For example, other steps may be included between reaction steps, and the order of reaction steps may be appropriately interchanged. This is something that those skilled in the art can determine based on conventional knowledge and experience. Preferably, the reaction methods described herein are performed sequentially.
[0088] A method for preparing a composite aerogel atomizing core 10 includes the following steps:
[0089] S11, Sintering to prepare the aerogel layer 200.
[0090] S12. The heating element 300 and the aerogel layer 200 are placed in the fixture, and porous ceramic slurry is filled into the fixture for hot pressing.
[0091] In some embodiments, step S11, when sintering to prepare the aerogel layer 200, includes the following steps:
[0092] S111. Mix gel fiber, first silicon source and binder to obtain a mixture, press the mixture into shape to obtain a green body.
[0093] S112, sinter the green body to obtain an aerogel green body.
[0094] S113. Using a second silicon source as the main reaction source, the aerogel preform is strengthened by chemical vapor infiltration to obtain an aerogel layer 200.
[0095] In some embodiments, the mass ratio of gel fiber, first silicon source and binder is 1:(0.05-0.3):(0.7-1.5).
[0096] In some embodiments, the fibers in step S111 include one or more of silica ceramic fibers, alumina ceramic fibers, silicon carbide ceramic fibers, and cordierite ceramic fibers.
[0097] In some embodiments, when the heating element 300 and the aerogel layer 200 are disposed in the fixture, and porous ceramic material is filled into the fixture for hot die casting, the following steps are included:
[0098] S121. Prepare porous ceramic slurry.
[0099] S122, the aerogel layer 200 and the heating element 300 are arranged in the fixture.
[0100] S123, after stirring the porous ceramic slurry at a temperature of 70℃~90℃ for 1~3h, it is injected into the fixture. The porous ceramic slurry fills the space between the aerogel layer 200 and the heating element 300 and / or between the outer wall of the aerogel layer 200 and the fixture. The mixture is then die-cast to obtain the composite aerogel atomizing core 10.
[0101] One embodiment of this application provides an atomizing component 20.
[0102] See Figure 10 As shown, an atomizing component 20 includes the composite aerogel atomizing core 10 described above or the composite aerogel atomizing core 10 prepared by the above preparation method.
[0103] In some of these embodiments, see Figure 10 As shown, the atomizing assembly 20 also includes a sealing base 21, an oil tank housing 22, a sealing element 23, a limiting cap 24, and conductive terminals 25. The oil tank housing 22 and the sealing base 21 enclose an oil storage cavity 26, and the oil tank housing 22 has a smoke inlet 29. A smoke guide tube 27 extends from the smoke inlet 29 into the oil storage cavity 26. An atomization channel 28 is provided inside the smoke guide tube 27. One end of the limiting cap 24 abuts against the smoke guide tube 27 and the other end is mounted on the base. A composite aerogel atomizing core 10 is disposed inside the limiting cap 24. The composite aerogel atomizing core 10 communicates with the atomization channel 28. The limiting cap 24 has an oil inlet hole. The atomizing matrix in the oil storage cavity 26 is conducted to the composite aerogel atomizing core 10 through the oil inlet hole.
[0104] In some of these embodiments, see Figure 10 As shown, an oil-absorbing cotton 210 is also provided between the composite aerogel atomizing core 10 and the sealing base 21. The purpose of providing the oil-absorbing cotton 210 is to prevent the composite aerogel atomizing core 10 from failing to consume excessive atomizing matrix.
[0105] In some of these embodiments, see Figure 10 As shown, a pad 211 is also provided between the oil-absorbing cotton 210 and the composite aerogel atomizing core 10. The pad 211 is provided to prevent the airflow of the atomizing component 20 from being obstructed.
[0106] One embodiment of this application provides an electronic atomizing device.
[0107] The electronic atomizing device includes the atomizing component 20 described above.
[0108] For example, electronic atomizing devices can be used to produce electronic cigarettes.
[0109] Furthermore, one embodiment of this application provides an electronic cigarette.
[0110] See Figure 11 As shown, an electronic cigarette includes a power supply assembly 30 and an atomizing assembly 20. The power supply assembly 30 is electrically connected to the atomizing assembly 20 to supply power to the atomizing assembly 20. The composite aerogel atomizing core 10 on the atomizing assembly 20 has a first lead 320 and a second lead 303, which are respectively electrically connected to the power supply assembly 30.
[0111] Example 1
[0112] This embodiment provides a composite aerogel atomizing core 10.
[0113] See Figures 1-3 As shown, the composite aerogel atomizing core 10 of this embodiment includes an annular porous ceramic layer 100, an annular aerogel layer 200, and a heating element 300. Both the porous ceramic layer 100 and the aerogel layer 200 are cylindrical tubular, with both open-ends tubular structures. The porous ceramic layer 100 and the aerogel layer 200 are generally coaxial. The aerogel layer 200 is fitted onto the outer wall of the porous ceramic layer 100, and the heating element 300 is disposed within the annular channel of the porous ceramic layer 100, so that the aerogel layer 200, the porous ceramic layer 100, and the heating element 300 are sequentially fitted and connected. The aerogel layer 200 has a greater porosity than the porous ceramic layer 100, and the pore size of the aerogel layer 200 is smaller than that of the porous ceramic layer 100, so that the oil conduction speed of the aerogel layer 200 to the atomizing matrix is less than that of the porous ceramic layer 100 to the atomizing matrix.
[0114] Specifically, the aerogel layer 200 is made of silicon nitride aerogel. The aerogel layer 200 has a porosity of 70%, a pore size of 2 μm, and a thickness of 1.1 mm. The porous ceramic layer 100 is made of silica ceramic. The porous ceramic layer 100 has a porosity of 60%, a pore size of 30 μm, and a thickness of 1.5 mm. Air guide holes 400 are respectively provided at corresponding positions on the aerogel layer 200 and the porous ceramic layer 100. The pore size of the air guide holes 400 is 0.1 mm.
[0115] The heating element 300 includes a heating wire 301, a first lead 320, and a second lead 303. The heating wire 301 has a ring-shaped mesh structure, and the first lead 320 and the second lead 303 are respectively connected to the heating wire 301. The first lead 320 and the second lead 303 are respectively used for external power supply. The outer diameter of the heating wire 301 is equal to the inner diameter of the porous ceramic layer 100.
[0116] The preparation method of the composite aerogel atomizing core 10 in this embodiment includes the following steps:
[0117] S1. A mixture is prepared by mixing silica ceramic fibers, a first silicon source, and a binder. The mixture is then pressed into a green body. The mass ratio of the gel fibers, the first silicon source, and the binder is 1:0.05:0.7.
[0118] S2. Sinter the green body to obtain an aerogel green body.
[0119] S3. Using a second silicon source as the main reaction source, the aerogel preform is strengthened by chemical vapor infiltration to obtain an aerogel layer 200.
[0120] S4. Prepare silica ceramic slurry.
[0121] S5. The aerogel layer 200 and the heating element 300 are placed in the fixture.
[0122] S6. After stirring the silica ceramic slurry at 80°C for 2 hours, it is injected into the fixture. The silica ceramic slurry fills the space between the aerogel layer 200 and the heating element 300. The mixture is then die-cast to obtain the composite aerogel atomizing core 10.
[0123] Example 2
[0124] This embodiment provides a composite aerogel atomizing core 10.
[0125] See Figures 4-6As shown, the composite aerogel atomizing core 10 of this embodiment includes an annular porous ceramic layer 100, an annular aerogel layer 200, and a heating element 300. Both the porous ceramic layer 100 and the aerogel layer 200 are cylindrical tubular, with both open-ends tubular structures. The porous ceramic layer 100 and the aerogel layer 200 are generally coaxial. The porous ceramic layer 100 is fitted onto the outer wall of the aerogel layer 200, and the heating element 300 is disposed within the annular channel of the aerogel layer 200, so that the porous ceramic layer 100, the aerogel layer 200, and the heating element 300 are sequentially fitted and connected. The aerogel layer 200 has a greater porosity than the porous ceramic layer 100, and the pore size of the aerogel layer 200 is smaller than that of the porous ceramic layer 100, so that the oil conduction speed of the aerogel layer 200 to the atomizing matrix is less than that of the porous ceramic layer 100 to the atomizing matrix.
[0126] The aerogel layer 200 is made of silicon nitride aerogel. The porosity of the aerogel layer 200 is 90%. The pore size of the aerogel layer 200 is 10 μm. The thickness of the aerogel layer 200 is 2 mm.
[0127] The porous ceramic layer 100 is made of alumina ceramic. The porosity of the porous ceramic layer 100 ranges from 70%. The pore size of the porous ceramic layer 100 is 60 μm. The thickness of the porous ceramic layer 100 is 1.5 mm. Air guide holes 400 are respectively provided at corresponding positions on the aerogel layer 200 and the porous ceramic layer 100. The pore size of the air guide holes 400 is 1 mm.
[0128] The heating element 300 includes a heating wire 301, a first lead 320, and a second lead 303. The heating wire 301 has a ring-shaped mesh structure, and the first lead 320 and the second lead 303 are respectively connected to the heating wire 301. The first lead 320 and the second lead 303 are respectively used for external power supply. The outer diameter of the heating wire 301 is equal to the inner diameter of the aerogel layer 200.
[0129] The preparation method of the composite aerogel atomizing core 10 in this embodiment includes the following steps:
[0130] S1. A mixture is prepared by mixing silicon nitride aerogel fibers, a first silicon source, and a binder. The mixture is then pressed into a green body. The mass ratio of the aerogel fibers, the first silicon source, and the binder is 1:0.3:1.5.
[0131] S2. Sinter the green body to obtain an aerogel green body.
[0132] S3. Using a second silicon source as the main reaction source, the aerogel preform is strengthened by chemical vapor infiltration to obtain an aerogel layer 200.
[0133] S4. Prepare silica ceramic slurry.
[0134] S5. The aerogel layer 200 and the heating element 300 are placed in the fixture.
[0135] S6. After stirring the silica ceramic slurry at 70°C for 3 hours, it is injected into the fixture. The silica ceramic slurry fills the space between the outer wall of the aerogel layer 200 and the fixture. The mixture is then die-cast to obtain the composite aerogel atomizing core 10.
[0136] Example 3
[0137] This embodiment provides a composite aerogel atomizing core 10.
[0138] See Figures 7-9 As shown, the composite aerogel atomizing core 10 of this embodiment includes an annular porous ceramic layer 100, an annular aerogel layer 200, and a heating element 300. Both the porous ceramic layer 100 and the aerogel layer 200 are cylindrical tubular, with both open-ends tubular structures. The porous ceramic layer 100 and the aerogel layer 200 are generally coaxial. The aerogel layer 200 is connected to the inner and outer walls of the porous ceramic layer 100, and the heating element 300 is disposed within the annular channel of the aerogel layer 200, such that the aerogel layer 200, the porous ceramic layer 100, the aerogel layer 200, and the heating element 300 are sequentially nested and connected. The aerogel layer 200 has a greater porosity than the porous ceramic layer 100, and the pore size of the aerogel layer 200 is smaller than that of the porous ceramic layer 100, so that the oil conduction speed of the aerogel layer 200 to the atomizing matrix is less than that of the porous ceramic layer 100 to the atomizing matrix.
[0139] The aerogel layer 200 is made of silicon carbide aerogel. The porosity of the aerogel layer 200 is in the range of 60%. The pore size of the aerogel layer 200 is 0.1 μm. The thickness of the aerogel layer 200 is 0.5 mm.
[0140] The porous ceramic layer 100 is made of silicon carbide ceramic. The porosity of the porous ceramic layer 100 ranges from 50%. The pore size of the porous ceramic layer 100 is 10 μm. The thickness of the porous ceramic layer 100 is 0.5 mm. Air guide holes 400 are respectively provided at corresponding positions on the aerogel layer 200 and the porous ceramic layer 100. The pore size of the air guide holes 400 is 0.1 mm.
[0141] The heating element 300 includes a heating wire 301, a first lead 320, and a second lead 303. The heating wire 301 has a ring-shaped mesh structure, and the first lead 320 and the second lead 303 are respectively connected to the heating wire 301. The first lead 320 and the second lead 303 are respectively used for external power supply. The outer diameter of the heating wire 301 is equal to the inner diameter of the internal aerogel layer 200.
[0142] The preparation method of the composite aerogel atomizing core 10 in this embodiment includes the following steps:
[0143] S1. A mixture is prepared by mixing silicon carbide aerogel fibers, a first silicon source, and a binder. The mixture is then pressed into a green body. The mass ratio of the aerogel fibers, the first silicon source, and the binder is 1:0.1:1.
[0144] S2. Sinter the green body to obtain an aerogel green body.
[0145] S3. Using a second silicon source as the main reaction source, the aerogel preform is strengthened by chemical vapor infiltration to obtain an aerogel layer 200.
[0146] S4. Prepare silicon carbide ceramic slurry.
[0147] S5. The aerogel layer 200 and the heating element 300 are placed in the fixture.
[0148] S6. After stirring the silicon carbide ceramic slurry at 90°C for 1 hour, it is injected into the fixture. The silicon carbide ceramic slurry fills the space between the outer wall of the aerogel layer 200 and the fixture, as well as between the aerogel layer 200 and the heating element 300. The mixture is then die-cast to obtain the composite aerogel atomizing core 10.
[0149] Comparative Example 1
[0150] This comparative example provides an atomizing core.
[0151] The structure of the atomizing core in this comparative example is basically the same as that in Example 1, except that the atomizing core in this comparative example does not contain an aerogel layer.
[0152] Comparative Example 2
[0153] This comparative example provides an atomizing core.
[0154] The structure of the atomizing core in this comparative example is basically the same as that in Example 1, except that the porosity of the aerogel layer 200 in this comparative example is 50%.
[0155] Comparative Example 3
[0156] This comparative example provides an atomizing core.
[0157] The structure of the atomizing core in this comparative example is basically the same as that in Example 1, except that the porosity of the aerogel layer 200 in this comparative example is 95%.
[0158] Comparative Example 4
[0159] This comparative example provides an atomizing core.
[0160] The structure of the atomizing core in this comparative example is basically the same as that in Example 1. The difference is that the porosity of the aerogel layer 200 in this comparative example is 70%, and the porosity of the porous ceramic layer 100 is 75%.
[0161] Comparative Example 5
[0162] This comparative example provides an atomizing core.
[0163] The structure of the atomizing core in this comparative example is basically the same as that in Example 1. The difference is that the porosity of the aerogel layer 200 in this comparative example is 70%, and the porosity of the porous ceramic layer 100 is 80%.
[0164] Comparative Example 6
[0165] This comparative example provides an atomizing core.
[0166] The structure of the atomizing core in this comparative example is basically the same as that in Example 1. The difference is that the pore size of the aerogel layer 200 in this comparative example is 15 μm, and the pore size of the porous ceramic layer 100 is 10 μm.
[0167] Comparative Example 7
[0168] This comparative example provides an atomizing core.
[0169] The structure of the atomizing core in this comparative example is basically the same as that in Example 1. The difference is that the pore size of the aerogel layer 200 in this comparative example is 30 μm, and the pore size of the porous ceramic layer 100 is 10 μm.
[0170] The performance of the composite aerogel atomizing core 10 in Examples 1 to 3 and the atomizing cores in Comparative Examples 1 to 7 were tested respectively, and the test results are shown in Table 1.
[0171] Table 1
[0172]
[0173] As shown in Table 1, in Comparative Example 1, the atomizer core does not contain an aerogel layer. Therefore, the strength of each component of the atomizer core in Comparative Example 1 is inferior to that in Example 1, and its lifespan is much shorter. It should be noted that the lifespan tested in this application refers to the total number of puffs taken when the atomizer core is combined with an electronic cigarette for simulated inhalation. In Comparative Example 2, the porosity of the aerogel layer 200 is 50%. Therefore, the wicking speed and atomization effect of the atomizer core in Comparative Example 2 are inferior to those in Example 1. In Comparative Example 3, the porosity of the aerogel layer 200 is 95%. Therefore, the wicking speed of the atomizing matrix in the atomizer core of Comparative Example 3 is too high, leading to leakage of the atomizing matrix. In Comparative Examples 4 and 5, the porosity of the aerogel layer 200 is equal to or less than the porosity of the porous ceramic layer 100. Therefore, the wicking speed and atomization effect of the atomizer cores in Comparative Examples 4 and 5 are inferior to those in Example 1. In Comparative Examples 6 and 7, the pore size of the aerogel layer 200 is equal to or greater than the pore size of the porous ceramic layer 100. Therefore, the strength of the atomizing core in Comparative Examples 6 and 7 is worse than that in Example 1.
[0174] The aforementioned composite aerogel atomizing core 10 has the advantages of high strength and high porosity, which can avoid the problem of excessively high atomizing matrix guiding speed leading to excessive atomizing matrix leakage due to excessively high porosity, and avoid the problem of insufficient liquid supply due to excessively low porosity, which affects the oil guiding speed and atomization effect.
[0175] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0176] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0177] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A composite aerogel atomizing core, characterized in that, It includes an annular porous ceramic layer, an annular aerogel layer, and a heating element. The aerogel layer is connected to the porous ceramic layer, and the heating element is disposed on the inner wall of the porous ceramic layer or the aerogel layer. The porosity of the aerogel layer is greater than that of the porous ceramic layer, and the pore size of the aerogel layer is smaller than that of the porous ceramic layer.
2. The composite aerogel atomizing core according to claim 1, characterized in that, The aerogel layer is sleeved on the outer wall of the porous ceramic layer, and the heating element is disposed in the annular channel of the porous ceramic layer, so that the porous ceramic layer, the aerogel layer and the heating element are sequentially sleeved and connected.
3. The composite aerogel atomizing core according to claim 1, characterized in that, The porous ceramic layer is sleeved on the outer wall of the aerogel layer, and the heating element is disposed in the annular channel of the aerogel layer, so that the aerogel layer, the porous ceramic layer and the heating element are sequentially sleeved and connected.
4. The composite aerogel atomizing core according to claim 1, characterized in that, The aerogel layer is connected to the inner and outer walls of the porous ceramic layer, and the heating element is disposed in the annular channel of the aerogel layer, so that the aerogel layer, the porous ceramic layer, the aerogel layer and the heating element are sequentially nested and connected.
5. The composite aerogel atomizing core according to any one of claims 1 to 4, characterized in that, The composite aerogel atomizing core satisfies at least one of the following conditions: (1) The porous ceramic layer has a tubular structure with openings at both ends; (2) The aerogel layer has a tubular structure with openings at both ends; (3) The porosity of the aerogel layer is in the range of 60% to 90%; (4) The pore size of the aerogel layer is 0.1 μm to 10 μm; (5) The thickness of the aerogel layer ranges from 0.5 mm to 2 mm; (6) The compressive strength of the aerogel layer is in the range of 4MPa to 50MPa.
6. The composite aerogel atomizing core according to any one of claims 1 to 4, characterized in that, The composite aerogel atomizing core satisfies at least one of the following conditions: (1) The porosity of the porous ceramic layer is in the range of 50% to 70%; (2) The pore size of the porous ceramic layer is 10μm to 60μm; (3) The thickness of the porous ceramic layer ranges from 0.5 mm to 1.5 mm; (4) The compressive strength of the porous ceramic layer is in the range of 5MPa to 50MPa.
7. The composite aerogel atomizing core according to any one of claims 1 to 4, characterized in that, The aerogel layer and the porous ceramic layer are respectively provided with air guiding holes at corresponding positions, and the pore diameter of the air guiding holes is 0.1mm to 1mm.
8. The composite aerogel atomizing core according to any one of claims 1 to 4, characterized in that, The heating element includes a heating wire, a first lead, and a second lead. The heating wire has a ring-shaped mesh structure, and the first lead and the second lead are respectively connected to the heating wire.
9. An atomizing component, characterized in that, The atomizing assembly includes the composite aerogel atomizing core according to any one of claims 1 to 8, and further includes a sealing base, an oil tank shell, a sealing element, a limiting cap, and conductive terminals. The oil tank shell and the sealing base enclose an oil storage cavity. The oil tank shell has a smoke inlet. A smoke guide tube extends from the smoke inlet toward the oil storage cavity from the oil tank shell. An atomization channel is provided in the smoke guide tube. One end of the limiting cap abuts against the smoke guide tube, and the other end is installed on the base. The composite aerogel atomizing core is disposed in the limiting cap and communicates with the atomization channel. The limiting cap has an oil inlet hole, and the atomizing matrix in the oil storage cavity is conducted to the composite aerogel atomizing core through the oil inlet hole.
10. An electronic atomizing device, characterized in that, It includes a power supply component and the atomizing component as described in claim 9, wherein the power supply component is electrically connected to the atomizing component to supply power to the atomizing component.