Atomizing core with cavity structure

Abstract

The utility model belongs to the technical field of atomizing cores, and particularly relates to a cavity structure atomizing core which comprises a heating portion, a heat insulation portion and a heat conduction atomizing portion with a cavity. The cavity of the heat-conducting atomizing part penetrates through the upper and lower planes of the heat-conducting atomizing part; a plurality of through holes penetrating through the inner and outer surfaces are formed in the side wall of the heat-conducting atomization part; the heating part is arranged on the outer surface of the heat conduction atomization part, and the heat insulation part covers the surface of the heating part. Compared with the prior art, the heating part is arranged between the heat conduction atomization part and the heat insulation part, atomization is achieved in the heat conduction atomization part, the heating part cannot make direct contact with atomization media, heat is transmitted to the heat conduction atomization part, the overall temperature of the heat conduction atomization part is uniform, atomization can be stable, local high-temperature positions do not exist, and carbon deposition does not occur; according to the atomization device, the atomization medium can be completely atomized, the overall temperature is uniform and stable, the atomization time is long, the atomization amount and the atomization quality are stable in the whole atomization process, and the atomization device has a good application prospect in the field of medicine atomization.

Description

Technical Field

[0001] The utility model belongs to the technical field of atomizer cores, and in particular relates to an atomizer core with a cavity structure. Background Art

[0002] The atomizer core is the core component of the atomizer equipment and plays a vital role in atomization quality, aerosol volume and other performances.

[0003] The cylindrical ceramic atomizer core is a commonly used atomizer core structure. The cylindrical atomizer core used in the prior art is a metal mesh embedded in the inner surface of a hollow cylinder. Compared with other boat-shaped and tripod-shaped atomizer cores with heating circuits printed on the surface of square porous ceramics, the hollow cylindrical atomizer core has a good heat gathering effect, a direct current airflow channel, small aerosol loss, and better efficacy and taste. For example, in CN209376694U, the hollow cylindrical atomizer core is first prepared with a metal mesh or metal wire, then placed in a mold and injected with ceramic slurry for curing and forming, and then sintered to obtain the atomizer core. Since the thickness of the metal mesh is small and the ceramic slurry has a certain fluidity, after sintering, the metal mesh part on the inner surface of the hollow cylinder will be covered by ceramic, and only part of it will be exposed. The temperature of the exposed metal mesh is much higher than that of the ceramic covered with the metal mesh, with a temperature difference of nearly 100°C. Therefore, the temperature on the inner surface of the atomizer core is not uniform, and carbon is easily deposited at the exposed metal mesh. The deposited carbon cannot volatilize and gradually accumulates, resulting in a burnt smell, which affects the atomization function and experience. At present, there is no hollow cylindrical ceramic atomizer core that pays attention to the carbon deposition problem.

[0004] In the heating without burning device, there are a few patents where the heating part is completely wrapped and does not directly contact the atomizing medium. For example, CN117223915A sets the metal heating wire inside the bowl-shaped ceramic, and the bowl-shaped ceramic recess contains the atomizing medium, which avoids the direct contact between the heating wire and the atomizing medium, similar to the inner pot of an electric rice cooker. However, this kind of atomizing core has no airflow channel, the atomization amount is very small, and it has no practical application value. Although CN219270168U also has a heat conducting part, it is used for heating without burning devices, not atomizing devices. The atomizing medium is solid, and the overall structure is quite different from that of the atomizing core. In addition, the principles and structures of the heating without burning device and the atomizing core are completely different, and cannot be transferred and referenced.

[0005] To this end, it is necessary to propose a new type of atomizer core structure - a cavity structure atomizer core, which can avoid direct contact between the heating wire and the atomization medium, ensure the balance and stability of the atomization temperature, avoid carbon deposition, and ensure the atomization experience and function. Utility Model Content

[0006] The purpose of the utility model is to provide a cavity structure atomizer core to address the deficiencies of the prior art. Through ingenious structural design, the atomizer core can avoid direct contact between the heating wire and the atomizing medium, ensure the balance and stability of the atomizing temperature, avoid carbon deposition, and ensure the atomization experience and function.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A cavity structure atomizer core includes a heating part and a heat insulating part, and a heat conductive atomization part with a cavity, wherein the heating part is arranged on the outer surface of the heat conductive atomization part, and the heat insulating part covers the outer surface of the heating part, that is, the heating part is located in the middle layer of the heat conductive atomization part and the heat insulating part, and the heating part is completely wrapped and covered by the heat conductive atomization part and the heat insulating part, and the heating part cannot directly contact the atomization medium and the air. The heat conductive atomization part has a through hole that penetrates the inner and outer surfaces, wherein the heating part only covers part of the outer surface of the heat conductive atomization part, and the unfolded area of ​​the heating part is smaller than the unfolded area of ​​the heat conductive atomization part. After the heating part generates heat, it transfers the heat to the heat conductive atomization part, and the outer surface of the heat conductive atomization part contacts the atomization medium. After the atomization medium is atomized, it enters the cavity of the heat conductive atomization part through the internal pores of the heat conductive atomization part, and the cavity serves as an aerosol passage, and the aerosol is inhaled into the human body through the cavity and the suction nozzle. This structure retains the straight-through aerosol passage while avoiding carbon deposition.

[0009] The internal cavity structure of the thermal atomization part is an airflow channel, and there is an atomization medium outside. The atomization medium is heated and atomized by the thermal atomization part, enters the airflow channel, and is sucked out upward. This structure has a direct airflow channel without bends, and the aerosol reaches the mouth directly. There is no loss of low-boiling point atomization medium, which can ensure a good atomization experience and effect.

[0010] The material of the thermally conductive atomization part can be metal, ceramic or metal ceramic. When the blank is ceramic or metal ceramic, the thermal conductivity of the thermally conductive atomization part is lower than that of the heating part. When the blank is metal, the composition and thermal conductivity of the metal are different from those of the heating part, thereby ensuring that the temperature of the thermally conductive atomization part is lower than that of the heating part after power is turned on. The heat of the thermally conductive atomization part comes from the heat conduction of the heating part. Compared with the traditional heating mesh type ceramic atomization core, the temperature of the thermally conductive atomization part is very uniform and stable, which greatly reduces carbon deposition.

[0011] The metal ceramic is a ceramic material added with metal powder, and the overall thermal conductivity effect can be adjusted by adjusting the amount of metal powder. The material of the thermal atomization part is selected according to the thermal conductivity effect. Optionally, the thermal atomization part is a foam metal such as foam copper, foam iron, foam aluminum, foam nickel, foam alloy, etc. Optionally, the thermal atomization part is a porous ceramic such as porous aluminum oxide, porous zirconium oxide, porous silicon oxide, etc. Optionally, metal powder is added to the porous ceramic.

[0012] The porosity of the thermal atomization part is 30-80%. If the porosity is too large, the strength is small and the durability is poor. If the porosity is too low, the gas-liquid diffusion is blocked and the atomization effect is poor. Preferably, the porosity of the thermal atomization part is 40-60%, and more preferably, 50-55%.

[0013] The heating part generates heat after being powered on, and the heat is transferred to the thermal atomization part. After the temperature of the thermal atomization part rises, the atomization medium in the liquid-locking cotton is atomized to produce aerosol. The heating part is located on the outer surface of the thermal atomization part. The heating part may or may not surround the surface of the thermal atomization part. When the heating part surrounds the surface of the thermal atomization part, that is, the heating part surrounds the thermal atomization part, the overall heating and heat transfer effect is better, and the temperature of the thermal atomization part is higher and more uniform; when the heating part does not surround the surface of the thermal atomization part, that is, the length of the heating part after unfolding is less than the length of the thermal atomization part after unfolding, it can save costs and be used in scenarios with lower requirements for heating accuracy. The heating part can be located at any position on the surface of the thermal atomization part and can be formed in any shape. When the heating part is located in the middle of the thermal atomization part, the overall temperature of the thermal atomization part is more balanced, and the temperature difference between different parts is smaller.

[0014] The heating part can be a wire, mesh or sheet made of pure metal or alloy, which can be selected according to its resistance. The heating part can also be directly obtained by thick film printing on the thermal atomization part, or a multi-layer sheet composition prepared by thick film printing or casting on the substrate.

[0015] Preferably, after power is turned on, the temperature of the thermally conductive atomizing part is lower than that of the heating part. The heating part is a metal wire, a metal sheet, a metal mesh or a metal paste thick film printed, and the heating part surrounds the upper end, the lower end or the middle part of the thermally conductive atomizing part.

[0016] The cross section of the thermally conductive atomizing portion may be any shape with a cavity, including a circle, an ellipse, a square, a rectangle, a triangle, etc. The thermally conductive atomizing portion may be a regular or irregular shape, such as any polyhedral structure with parallel upper and lower planes. Based on the convenience of production and assembly, a regular shape is preferred, such as a triangular prism, a cube, a pentagonal prism, a hexagonal prism, a heptagonal prism, a cylinder, etc. The cavity inside the thermally conductive atomizing portion may be any three-dimensional shape with parallel upper and lower planes, such as a triangular prism, a cube, a pentagonal prism, a hexagonal prism, a heptagonal prism, a cylinder, etc.

[0017] The preparation methods of the thermal atomization part include the following two categories:

[0018] Preparation method (I) of the porous structure of the thermal atomization part: first prepare a dense blank with a cavity, the blank is metal, ceramic or metal ceramic, and then perform mechanical drilling. The mechanical processing method includes conventional micro-hole processing methods such as laser processing. The porous structure obtained in this way is a regular porous structure, each micropore runs through the inner and outer surfaces of the thermal atomization part, each micropore is basically parallel in the vertical section, and the single pore diameter is above 100μm.

[0019] When the pore sizes are all above 100 microns, the atomizing medium will flow in the pores and cause oil leakage. Therefore, the atomizing core also includes liquid-locking cotton. When used together, the liquid-locking cotton absorbs the atomizing medium, and the atomizing medium reaches the heat-conducting atomizing part through the liquid-locking cotton, thereby avoiding oil leakage.

[0020] The preparation method (ii) of the porous structure of the heat-conducting atomization part: first prepare the slurry, then shape it into a porous green body of the heat-conducting atomization part with a cavity, and sinter to obtain the heat-conducting atomization part with a porous structure. When the heat-conducting atomization part is a porous metal, prepare the metal slurry, immerse the template in the slurry, take it out and dry it, and sinter to remove the template to obtain the foamed metal. When the heat-generating atomization part is a ceramic or a metal ceramic, a foaming agent or a porogen is added to the slurry, and a porous structure can be formed after sintering. The above method obtains an irregular interconnected porous structure. By adjusting the structure of the template, the amount of the foaming agent or the porogen, and the particle size of the porogen, it is easy to obtain a interconnected porous structure with a specific pore size. The above pore size adjustment method is a conventional means for preparing foamed metals and porous ceramics, which will not be described in detail. This method can not only obtain a porous structure with a maximum pore size of more than 100μm, but also a porous structure with a maximum pore size of less than 100μm. In the utility model, the through holes of the heat-conducting atomization part come from the internal pores of porous metal ceramics or porous ceramics or foamed metals, and the through holes are formed by a foaming process, and the foaming process includes one or more of a template method, an air entraining agent, a foaming agent or a pore-forming agent.

[0021] When the maximum pore size is below 100 microns, the heat-conducting atomization part will not leak oil, and no liquid-locking cotton is required, so it can be directly installed in the oil storage chamber.

[0022] Beneficial Effects

[0023] The atomization core of the utility model is a brand-new atomization core structure. Different from the traditional atomization core which directly atomizes through the heating part, the heating part is arranged in the middle layer of the heat-conducting atomization part and the heat-insulating part, and atomization is realized in the heat-conducting atomization part. The heating part cannot directly contact the atomization medium and transfers the heat to the heat-conducting atomization part. The overall temperature of the heat-conducting atomization part is uniform and can stably atomize. There is no local high temperature, no carbon deposits, and no local low temperature, so that the atomization medium can be completely atomized, and the overall temperature is uniform and stable, so that a long atomization time is achieved, and the atomization amount and atomization quality are stable during the whole atomization process. Especially, it has good application prospects in the field of drug atomization.

[0024] In the utility model, the heating part and the heat-conducting atomizing part work together, which is convenient for selecting the materials and performances of the two respectively, and adjusting the heating temperature of the heating part and the thermal conductivity of the heat-conducting part, so as to accurately control the temperature of the heat-conducting part, so as to match the performance of the heating part and the heat-conducting atomizing part, and meet the needs of multiple atomization scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an overall schematic diagram of the hollow structure atomizer core in Example 1.

[0026] Figure 2 This is a schematic diagram of the front view of the hollow structure atomizer core in Example 1.

[0027] Figure 3 for Figure 2 Schematic diagram of the structure of the AA section.

[0028] Figure 4 Schematic diagram of the cross section of the heat conduction atomization part in Example 2

[0029] Figure 5 Schematic diagram of the cross section of the heat conduction atomization part in Example 3

[0030] Figure 6 Schematic diagram of the structure of the cylindrical ceramic atomizer core in Comparative Example 1

[0031] Among them, 1-heat conduction atomization part; 2-heat insulation part; 3-conducting wire; 4-heating part DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0035] Example 1

[0036] like Figure 1-Figure 3 As shown, the utility model provides a cavity structure atomizer core, comprising a heating part 4, a heat insulation part 2 and a heat-conducting atomizer part 1 with a cavity;

[0037] The cavity of the heat-conducting atomizing part 1 passes through the upper and lower planes of the heat-conducting atomizing part 1;

[0038] The side wall of the heat-conducting atomizing part 1 is provided with a plurality of through holes penetrating the inner and outer surfaces;

[0039] The heating part 4 is arranged on the outer surface of the heat-conducting atomizing part 1, and the heat-insulating part 2 covers the surface of the heating part 4, so that the heating part 4 is located between the heat-conducting atomizing part 1 and the heat-insulating part 2 and is completely covered by the heat-conducting atomizing part 1 and the heat-insulating part 2;

[0040] The heating part 4 only covers a portion of the surface of the heat-conducting atomizing part 1 .

[0041] Specifically, the thermally conductive atomization part 1 is cylindrical, and its internal cavity is also cylindrical. The thermally conductive atomization part 1 has a plurality of through holes penetrating the inner and outer surfaces. The heating part 4 surrounds the outer surface of the lower end of the thermally conductive atomization part 1. The heating part 4 is a heating plate made of copper-nickel alloy. Lead wires are provided at both ends of the heating part 4. The thermal insulation part 2 is dense ceramic. The thermal insulation part 2 only covers the outer surface of the heating part 4. The heating part 4 is located between the thermal insulation part 2 and the thermally conductive atomization part 1, and is completely covered by the two.

[0042] The preparation method of the atomizer core includes the following steps: first, prepare a dense thermal conductive atomization part blank, specifically a dense alumina ceramic, and process a plurality of radial through holes in the middle and upper parts of the thermal conductive atomization part 1 blank by laser processing, and the through holes penetrate the outer surface and the inner surface of the thermal conductive atomization part, and the aperture of the through holes is about 150μm. The contact point between the thermal conductive atomization part 1 and the heating part 4 is a dense structure, and no laser processing is performed, which can save costs. Since the atomizing medium is on the outer surface of the thermal conductive atomization part, the thermal conductive atomization part at the contact point is a porous structure and does not affect the atomization. The porosity of the area where the thermal conductive atomization part 1 does not contact the heating part 4 is 50%.

[0043] When in use, the outside of the heat-conducting atomization part 1 is wrapped with liquid-locking cotton, and the liquid-locking cotton absorbs the atomizing medium. The atomizing medium passes through the liquid-locking cotton and reaches the heat-conducting atomization part 1, where it is atomized, and the formed aerosol is sucked upward through the internal cavity.

[0044] The heating part 4 is completely wrapped and covered by the heat-conducting atomizing part 1 and the heat-insulating part 2 and cannot contact the atomizing medium. The temperature of the heat-conducting atomizing part 1 is lower than that of the heating part.

[0045] After assembling the atomizer using the atomizer core of Example 1, a puff test was conducted. The flavor began to fade after 1000 puffs of puffing for 1 second and then resting for 5 seconds. At this time, the atomizer core was disassembled, and there was basically no carbon deposit on the heat-conducting atomization part.

[0046] Example 2

[0047] Different from Example 1, a ceramic slurry is prepared, formed and sintered into a dense thermally conductive atomizing part 1, the thermally conductive atomizing part 1 is a rectangular parallelepiped with a cylindrical cavity, the through hole of the thermally conductive atomizing part 1 is made by laser processing, and the cross-sectional view of the thermally conductive atomizing part 1 is as shown in FIG. Figure 4 As shown, the heating part 4 is arranged in the middle of the thermal atomization part 1, and the contact part between the thermal atomization part 1 and the heating part 4 is not perforated to save costs. The porosity of the area where the thermal atomization part 1 does not contact the heating part 4 is 30%. The heating part 4 is a metal mesh.

[0048] The heat-conducting atomizing part 1 has different shapes and can be adapted to atomizing devices of different shapes and structures. When in use, the heat-conducting atomizing part 1 is wrapped with liquid-locking cotton.

[0049] The rest is the same as in Example 1 and will not be described again here.

[0050] Example 3

[0051] Different from Example 1, the thermal conductive atomization part 1 is prepared by using a foam copper alloy. First, the foam copper alloy is prepared and the foam copper alloy is processed to obtain the desired shape and size. The thermal conductive atomization part 1 is a triangular prism, and its internal cavity is also a triangular prism. The cross-sectional view of the thermal conductive atomization part 1 is as shown in FIG. Figure 5 As shown, the heating part 4 is arranged at the upper end of the thermal atomization part 1. Since the foam copper is a porous structure as a whole, the contact part between the thermal atomization part 1 and the heating part 4 is also a porous structure. The porosity of the area where the thermal atomization part 1 does not contact the heating part 4 is 45%. The heating part 4 is obtained by thick film printing of metal paste.

[0052] The rest is the same as in Example 1 and will not be described again here.

[0053] Comparative Example 1

[0054] Comparative Document 1 is a cylindrical ceramic atomizer core in the prior art, which has a cylindrical cavity inside the cylindrical porous ceramic, and a heating mesh is embedded in the cavity, such as Figure 6 As shown. Part of the mesh is covered with ceramic. After the same puff test as in Example 1, the taste began to fade after 400 puffs. At this time, the atomizer core was disassembled and black tar-like substances adhered to the heating mesh, which means carbon deposition.

[0055] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also make appropriate changes and modifications to the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A cavity structure atomizer core, characterized in that: It includes a heating part, a heat insulating part and a heat-conducting atomizing part with a cavity; The cavity of the heat-conducting atomizing portion passes through the upper and lower planes of the heat-conducting atomizing portion; The side wall of the heat-conducting atomization portion is provided with a plurality of through holes penetrating the inner and outer surfaces; The heating part is arranged on the outer surface of the heat-conducting atomizing part, and the heat-insulating part covers the surface of the heating part, so that the heating part is located between the heat-conducting atomizing part and the heat-insulating part and is completely covered by the heat-conducting atomizing part and the heat-insulating part; The heating portion only covers a portion of the surface of the heat-conducting atomizing portion.

2. The cavity structure atomizer core according to claim 1, characterized in that: The through hole of the heat-conducting atomization part is obtained by machining a dense green body, the aperture of the through hole is greater than 100 μm, and the material of the dense green body is ceramic or metal.

3. The cavity structure atomizer core according to claim 2, characterized in that: The mechanical processing is laser processing.

4. The cavity structure atomizer core according to claim 1, characterized in that: The through holes of the heat-conducting atomization part come from the internal pores of porous ceramics or foamed metals, and the through holes are formed through a foaming process.

5. The cavity structure atomizer core according to claim 1, characterized in that: The porosity of the region where the heat-conducting atomizing portion does not contact the heating portion is 30-80%.

6. The cavity structure atomizer core according to claim 1, characterized in that: After power is turned on, the temperature of the heat-conducting atomizing part is lower than that of the heating part.

7. The cavity structure atomizer core according to claim 1, characterized in that: The heating part is a metal wire, a metal sheet, a metal mesh or a metal paste thick film printed, and the heating part surrounds the upper end, the lower end or the middle part of the heat-conducting atomization part.

8. The cavity structure atomizer core according to claim 1, characterized in that: The upper and lower planes of the heat-conducting atomizing portion are parallel, and the shape of the heat-conducting atomizing portion is a prism or a cylinder.

9. The cavity structure atomizer core according to claim 8, characterized in that: The upper and lower planes of the cavity of the heat-conducting atomization part are parallel, and the shape of the cavity is a prism or a cylinder.

10. The cavity structure atomizer core according to claim 2 or 3, characterized in that: The outer surface of the heat-conducting atomizing part is provided with liquid-locking cotton.

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