Porous ceramic atomizing core and electronic cigarette

Abstract

The utility model provides a porous ceramic atomization core and an electronic cigarette, the porous ceramic atomization core comprises a cylindrical porous ceramic, a heating mesh and a liquid guide body, the liquid guide body wraps the outer side wall of the porous ceramic, the porous ceramic is provided with a hollow through center hole in the axial direction of the porous ceramic, the heating mesh is wound into a C shape to be attached to the inner side wall of the center hole, and the heating mesh is wound into the C shape to be attached to the inner side wall of the center hole. And the relationship between the depth H of the heating mesh embedded into the porous ceramic and the heating mesh d0 satisfies 0.5 < = H / d0 < = 0.9. Porous ceramic is adopted as the atomizing core and is stably combined with atomizing liquid, the problem of oil immersion aging is avoided, a part of the heating mesh is embedded into the inner side wall of the porous ceramic, the other part of the heating mesh protrudes out of the inner side wall of the porous ceramic, dry burning is avoided, and meanwhile large smoke amount is guaranteed.

Description

Technical Field

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[0001] The utility model relates to the technical field of electronic atomizers, in particular to a porous ceramic atomization core and an electronic cigarette. Background Technique

[0002] An atomizer is a device that converts an atomization liquid into an aerosol, which is widely used in medical devices and electronic cigarettes. With the development of the electronic cigarette industry, atomization technology and related materials are constantly updated and iterated. At present, the heating element part of the atomization component is mainly composed of an oil guiding body and a heating mesh sheet. As electronic cigarette users' pursuit of high-explosion and large-smoke atomization taste increases day by day, the high-power lung inhalation scheme that brings a large-smoke experience is gradually popular among users. The current lung inhalation atomization products are mainly cotton core atomization schemes, but they have problems such as insufficient atomization, a granular feeling in atomization, and easy occurrence of oil explosion. In addition, the cotton core of the oil guiding body is soaked in the atomization liquid for a long time. Especially at high temperatures, cotton-based organic polymer fibers such as non-woven fabrics have a risk of reacting with certain components in the atomization liquid and being dissolved, which may change the components of the atomization liquid, cause problems such as accelerated aging of the non-woven fabric in the cotton core, and the dissolved cotton-based fibers produce harmful substances in the atomization liquid, which enter the human body as users inhale, endangering human health and other problems. Content of the Utility Model

[0003] The utility model provides a porous ceramic atomization core and an electronic cigarette to solve the technical problems mentioned in the above background.

[0004] A porous ceramic atomization core includes a cylindrical porous ceramic and a heating mesh sheet wound into a C shape. A hollow and through central hole is provided in the middle of the porous ceramic along the height direction of the porous ceramic. The heating mesh sheet is arranged on the inner side wall of the central hole. The depth H of the heating mesh sheet embedded in the porous ceramic is H = 0.5d2 + d0 - 0.5d1, where 0.5 ≤ H / d0 ≤ 0.9, d2 is the diameter of the heating mesh sheet after being wound into a circle, d0 is the thickness of the heating mesh sheet, and d1 is the aperture of the central hole.

[0005] Further, the diameter d2 of the heating mesh sheet after being wound into a circle satisfies d1 - 0.05 ≤ d2 < d1. The aperture d1 of the central hole is 3.0 mm - 4.5 mm, and the thickness d0 of the heating mesh sheet is 0.08 mm - 0.14 mm.

[0006] Further, the width of a single heating wire in the heating mesh sheet is 0.1 - 0.18 mm.

[0007] Further, the winding angle of the heating mesh sheet is 200 degrees - 345 degrees.

[0008] Further, the porous ceramic core further includes a liquid guide wrapped around the outer side wall of the porous ceramic. The outer diameter D of the liquid guide is 5.5 mm - 7.0 mm.

[0009] Furthermore, the longitudinal height L1 of the heating mesh is 0.5 × H0 ≤ L1 ≤ H0 - 1, where H0 is the height of the liquid guide, and the height of the liquid guide H0 is 7.0 mm - 12 mm.

[0010] Furthermore, the heating mesh includes two heating elements arranged side by side, a common conductive connection and two independent conductive connections. The common conductive connection is located between the two heating elements, and the two independent conductive connections are respectively located on the side of the heating element away from the common conductive connection. The two independent conductive connections and the common conductive connection are respectively provided with pins, and the pins are made of nickel or stainless steel.

[0011] On the other hand, this utility model also provides an electronic cigarette, including a housing, a power supply assembly, and a porous ceramic atomizing core as described above. The power supply assembly and the porous ceramic atomizing core are installed in the housing, and the power supply assembly is electrically connected to the porous ceramic atomizing core.

[0012] The beneficial effects of this utility model are as follows: The porous ceramic atomizing core provided in this application includes a cylindrical porous ceramic, a heating mesh, and a liquid guide. The liquid guide wraps around the outer wall of the porous ceramic. The porous ceramic has a hollow, through-hole in its axial direction. The heating mesh is wound into a C-shape and attached to the inner wall of the central hole. The relationship between the depth H of the heating mesh embedded in the porous ceramic and the d0 of the heating mesh satisfies 0.5≤H / d0≤0.9. Using porous ceramic as the atomizing core ensures stable bonding with the atomizing liquid and avoids the problem of oil aging in the liquid guide. Part of the heating mesh is buried in the inner wall of the porous ceramic, and another part protrudes from the inner wall of the porous ceramic, which avoids dry burning while ensuring a large amount of smoke. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort. In addition, in the drawings, the same parts use the same reference numerals, and the drawings are not drawn to scale.

[0014] Figure 1 This is a schematic diagram of the structure of the electronic cigarette in a specific embodiment of this utility model;

[0015] Figure 2 This is a schematic diagram of the porous ceramic atomizing core in a specific embodiment of this utility model;

[0016] Figure 3This is a schematic diagram of the heating mesh in the unfolded state in a specific embodiment of this utility model.

[0017] 100. Electronic cigarette; 1. Housing; 2. Power supply assembly; 3. Porous ceramic; 31. Center hole; 4. Heating mesh; 41. Heating element; 42. Common conductive connection; 43. Independent conductive connection; 44. Pin; 5. Liquid conductor. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments disclosed in this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments disclosed. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] 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.

[0020] This disclosure provides an electronic cigarette. For example... Figure 1 As shown, the electronic cigarette 100 includes a housing 1 (not shown), a power supply assembly 2 (not shown), and a porous ceramic atomizing core. The porous ceramic atomizing core and the power supply assembly 2 are installed inside the housing 1, and the power supply assembly 2 is electrically connected to the porous ceramic atomizing core. The power supply assembly 2 is used to supply power to the porous ceramic atomizing core, causing the porous ceramic 3 to heat up and atomize the e-liquid.

[0021] In one embodiment, see Figure 2 and Figure 3, the porous ceramic atomization core includes a cylindrical porous ceramic 3, a heating mesh 4 and a liquid guide 5. The liquid guide 5 is wrapped around the outer wall of the porous ceramic 3. The porous ceramic 3 has a hollow and through central hole 31 along its axial direction. The central hole 31 is also cylindrical. The heating mesh 4 is wound into a C shape and fitted to the inner wall of the central hole 31, and at least part of the heating mesh 4 is buried in the inner wall. Specifically, the depth H of the heating mesh 4 embedded in the porous ceramic 3 and the thickness d0 of the heating mesh 4 satisfy 0.5 ≤ H / d0 ≤ 0.9. That is, more than half of the heating mesh 4 is buried in the inner wall of the porous ceramic 3, and a small part of the remaining heating mesh 4 is exposed at the inner wall of the porous ceramic 3. On the one hand, the heating mesh 4 is in direct contact with the e-liquid in the porous ceramic 3 as much as possible, which can effectively improve the problem of dry burning of the heating mesh 4. On the other hand, the smoke generated by heating the e-liquid by the exposed heating mesh 4 can be quickly brought into the user's mouth by the airflow sucked in the central hole 31, and the smoke volume is large, so as to meet the requirements of large and full atomized smoke.

[0022] In one embodiment, the depth H of the heating mesh 4 embedded in the porous ceramic 3 is H = 0.5d2 + d0 - 0.5d1, 0.5 ≤ H / d0 ≤ 0.9, d2 is the diameter of the rolled heating mesh 4, d0 is the thickness of the heating mesh 4, d1 is the aperture of the central hole 31. The diameter d2 of the rolled heating mesh 4 satisfies d1 - 0.05 ≤ d2 < d1. The aperture d1 of the central hole 31 is 3.0 mm - 4.5 mm, and the thickness d0 of the heating mesh 4 is 0.08 mm - 0.14 mm. Preferably, the rolling angle of the heating mesh 4 is controlled between 200 degrees and 350 degrees. When ensuring as much heating area as possible, it is possible to avoid short circuits caused by the contact of both ends of the heating mesh 4.

[0023] The heating mesh 4 can be designed to adapt to the metal wire layout scheme according to requirements. It can be a single mesh or a double mesh. If it is a double mesh design, it can realize the alternating heating of the two heating meshes 4, greatly improving the service life of the atomization core. In addition, it can also atomize simultaneously, with a large heating area, higher atomization efficiency, more sufficient atomization of the aerosol, finer taste, larger and fuller smoke volume, bringing a more extreme user suction experience.

[0024] As Figure 3 shown, the heating mesh 4 is rectangular after being laid flat, and the horizontal length L1 of the heating mesh 4 is the circumference after being rolled. The horizontal length L0 of the heating mesh 4 needs to satisfy: 0.6×πd0 ≤ L0 ≤ π×d0×0.95. The vertical height L1 of the heating mesh 4 should not exceed the height H0 of the heating body. Specifically, the vertical height L1 of the heating mesh 4 satisfies: 0.5×H0 ≤ L1 ≤ H0 - 1, H0 is the height of the liquid guide 5, and the height H0 of the liquid guide 5 is 7.0 mm - 12 mm.

[0025] The heating mesh 4 can be made of titanium alloy or nickel-based alloy. Nickel-chromium alloy is preferred because it has advantages such as high resistivity, stable performance, resistance to oxidation, good weldability, and resistance to deformation at high temperatures. The thickness d0 of the heating mesh 4 is 0.1 mm, and the width L2 of a single heating wire in the heating mesh 4 is 0.1-0.18 mm to ensure the strength and toughness of the heating wire and minimize wire breakage.

[0026] In one embodiment, such as Figure 3 As shown, the heating mesh 4 includes two heating elements 41 arranged side by side, a common conductive connection 42, and two independent conductive connections 43. The common conductive connection 42 is located between the two heating elements 41, and the two independent conductive connections 43 are respectively located on the side of the heating elements 41 away from the common conductive connection 42. The common conductive connection 42 and the two independent conductive connections 43 are each provided with pins 44, which are made of nickel or stainless steel. The heating mesh 4 adopts a double-mesh design, which realizes large-area atomization and can instantly generate a large amount of smoke to meet the user's demand for large amounts of smoke.

[0027] The porous ceramic atomizing core provided in this application mainly includes the following preparation method:

[0028] Step S1: Use a rolling rod to roll the heating mesh 4 with a preset pattern into a circle to obtain a heating mesh 4 with a rolling diameter of d2;

[0029] Step S2: Weld the pin 44 to the conductive connection part of the heating mesh 4 by laser welding or spot welding technology;

[0030] Step S3: Place the rolled heating mesh 4 into a hot press casting mold. The molding temperature is 60-80℃ and the molding pressure is 0.4MPa-0.7MPa. The ceramic slurry is filled into the mold under pressure to obtain the ceramic heating element blank. This step is not limited to hot press casting and can also be injection molding.

[0031] Step S4: Arrange the ceramic heating element blanks in a tray and embed the powder, then place them in a sintering furnace for integrated sintering with debinding. The sintering temperature is 600℃-800℃, and the holding time is 1-4 hours.

[0032] In this embodiment, the diameter of the heating mesh 4 can be adjusted by using a rolling rod. When the heating mesh 4 is stamped and rolled, rivet rings can be provided at both ends of the heating mesh 4 using a stamping die to ensure the roundness of the heating mesh 4 and effectively prevent the heating mesh 4 from springing back during ceramic sintering, which would cause the atomizing core to deform as a whole.

[0033] This application provides an embodiment in which multiple heating meshes 4 with a thickness of 0.08 mm are embedded at different depths H0 in the inner wall of porous ceramic 3. The porous ceramic atomizing core is assembled with other components to form a lung-inhaling product, and the amount of smoke, taste, and blackening of the heating mesh are obtained.

[0034] Table 1 Performance test data of porous ceramic atomizing core

[0035]

[0036] Referring to Table 1, the embedding ratio of the heating mesh 4 is between 50% and 87.5%, resulting in good atomization. This ensures that the electronic cigarette produces a large and full vapor volume, with a delicate, smooth, and stable taste, providing users with an ultimate overall taste experience.

[0037] The above are merely specific embodiments of the present invention, enabling those skilled in the art to understand or implement this disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A porous ceramic atomizing core, characterized in that, It includes a cylindrical porous ceramic and a heating mesh sheet wound in a C shape. A hollow through center hole is provided in the middle of the porous ceramic along the height direction of the porous ceramic. The heating mesh sheet is arranged on the inner side wall of the center hole. The depth H at which the heating mesh sheet is embedded into the porous ceramic is H = 0.5d2 + d0 - 0.5d1, where 0.5 ≤ H / d0 ≤ 0.9, d2 is the diameter of the wound circle of the heating mesh sheet, d0 is the thickness of the heating mesh sheet, and d1 is the aperture of the center hole.

2. The porous ceramic atomizing core according to claim 1, characterized in that, The diameter d2 of the wound circle of the heating mesh sheet satisfies d1 - 0.05 ≤ d2 < d1. The aperture d1 of the center hole is 3.0 mm - 4.5 mm, and the thickness d0 of the heating mesh sheet is 0.08 mm - 0.14 mm.

3. The porous ceramic atomizing core according to claim 2, characterized in that, The width of a single heating wire in the heating mesh sheet is 0.1 - 0.18 mm.

4. The porous ceramic atomizing core according to claim 3, characterized in that, The winding angle of the heating mesh sheet is 200 degrees - 345 degrees.

5. A porous ceramic atomizing core according to any one of claims 1-4, characterized in that, The porous ceramic core further includes a liquid guide wrapped around the outer side wall of the porous ceramic. The outer diameter D of the liquid guide is 5.5 mm - 7.0 mm.

6. A porous ceramic atomizing core according to claim 5, characterized in that, The longitudinal height L2 of the heating mesh sheet satisfies: 0.5×H0 ≤ L2 ≤ H0 - 1, where H0 is the height of the liquid guide, and the height H0 of the liquid guide is 7.0 mm - 12 mm.

7. A porous ceramic atomizing core according to claim 6, characterized in that, The heating mesh sheet includes two heating monomers arranged side by side, a common conductive connection part, and two independent conductive connection parts. The common conductive connection part is arranged between the two heating monomers. The two independent conductive connection parts are respectively arranged on the sides of the heating monomers背离 the common conductive connection part. Pins are respectively provided on the two independent conductive connection parts and the common conductive connection part. The pins are formed from nickel or stainless steel materials.

8. An electronic cigarette, characterized in that, It includes a housing, a power supply component, and a porous ceramic atomization core as described in any one of claims 1 - 7. The power supply component and the porous ceramic atomization core are installed in the housing, and the power supply component is electrically connected to the porous ceramic atomization core.

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