Atomizing core and electronic atomizer thereof

Abstract

A heating pipe comprises a pipe body and a heating element arranged on the surface of the pipe body, the heating element is used for heating the pipe body, the pipe body has the functions of conducting heat and installing the heating element, heat can be evenly distributed, and even heating of aerosol generating matrixes is achieved. And the core pasting problem caused by over-high local temperature is avoided.

Description

Technical Field

[0001] This utility model relates to the field of atomization technology, and in particular to an atomizing core and its electronic atomizer. Background Technology

[0002] In the field of electronic atomizers, the atomizer coil, as a core component, has a crucial impact on the product's safety, stability, and user experience due to its design and material selection. Currently, some electronic atomizers use a coil with a mesh heating wire structure. While this structure can achieve heating and atomization of the aerosol-generating matrix to some extent, uneven heating or heat transfer during the heating process can easily occur. This uneven heating leads to localized overheating, causing the aerosol-generating matrix to overheat and resulting in coil burn-in, thus affecting the user experience. Utility Model Content

[0003] To address the shortcomings of the existing technology, an atomizing core and its electronic atomizer are provided to solve the problem of burnt cores caused by uneven heating.

[0004] To address the aforementioned technical problems, one embodiment of this application provides an atomizing core for use in an electronic atomizer, the atomizing core comprising:

[0005] A heating tube includes a tube body and a heating element disposed on the surface of the tube body; the surface of the tube body has a plurality of first micropores uniformly distributed therethrough; the heating element is used to heat the tube body; and

[0006] A liquid guiding component is sleeved on the outer surface of the heating tube and at least covers the first micropore.

[0007] Optionally, the heating element is printed on the surface of the tube body using a thick film.

[0008] Optionally, the heating element is in the shape of a continuous "S", and the heating element includes a plurality of parallel spaced first heating elements and a second heating element connecting two adjacent first heating elements; wherein the first heating elements are arranged along a first preset direction, the second heating elements are arranged along a second preset direction, and the first preset direction is perpendicular to the second preset direction.

[0009] Optionally, the first preset direction is along the circumferential or axial direction of the tube body, and the second preset direction is along the axial or circumferential direction of the tube body.

[0010] Optionally, a permeation region is formed between two adjacent first heating elements, and a plurality of first micropores are evenly distributed in the permeation region.

[0011] Optionally, the heating element is disposed on at least one of the inner wall of the tube and the outer wall of the tube.

[0012] Optionally, the heating tube further includes a porous ceramic layer, and the heating element is located between the porous ceramic layer and the tube body.

[0013] Optionally, the tube body is one of the following: stainless steel tube body, alumina ceramic tube body, or microporous ceramic tube body.

[0014] Optionally, the heating element has tab pads printed on both ends by thick film.

[0015] To address the aforementioned technical problems, another embodiment of this application provides an electronic atomizer, comprising:

[0016] Host; and

[0017] The atomizing core described above is mounted on the main unit.

[0018] The atomizing core and electronic atomizer provided in this application include a heating tube comprising a tube body and a heating element disposed on the surface of the tube body. The heating element is used to heat the tube body, and the tube body has the functions of conducting heat and mounting the heating element, which helps to distribute heat evenly and achieve uniform heating of the aerosol generation matrix, avoiding the problem of core clogging caused by excessively high local temperatures.

[0019] Meanwhile, heating elements are installed on the tube body, which enhances the structural strength of the heating elements and prevents deformation during use, thereby avoiding the problem of uneven heating caused by deformation.

[0020] Details of one or more embodiments of the present invention are set forth in the following drawings and description, so that other features, objects and advantages of the present invention will be more readily understood. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0022] Figure 1 This is a partial cross-sectional schematic diagram of the electronic atomizer provided in this application;

[0023] Figure 2 This is a three-dimensional structural diagram of the heating tube in the atomizing core provided in this application;

[0024] Figure 3 This is a three-dimensional structural diagram of a portion of the atomizing core provided in this application;

[0025] Figure 4 This is a three-dimensional structural diagram of a portion of the atomizing core deformation structure provided in this application;

[0026] Figure 5 This is a cross-sectional schematic diagram of the atomizing core provided in this application;

[0027] Figure 6 This is a cross-sectional schematic diagram of the atomizing core deformation structure provided in this application.

[0028] In the diagram, 1 is the atomizing core; 2 is the tube body; 3 is the first micropore; 4 is the heating element; 41 is the first heating element; 42 is the second heating element; 5 is the liquid guiding component; 6 is the heating tube; 7 is the porous ceramic layer; 8 is the second micropore; 9 is the penetration area; 10 is the electronic atomizer; and 20 is the main unit. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described and explained below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments provided by this utility model without inventive effort are within the scope of protection of this utility model. Furthermore, it can be understood that although the efforts made in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this utility model, some design, manufacturing, or production modifications based on the technical content disclosed in this utility model are merely conventional technical means and should not be construed as insufficient disclosure of the present utility model.

[0030] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this utility model. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this utility model may be combined with other embodiments without conflict.

[0031] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "a," "an," "an," "the," and similar words used in this utility model do not indicate quantity limitation and may indicate singular or plural. The terms "comprising," "including," "having," and any variations thereof used in this utility model are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to these processes, methods, products, or devices. The terms "connected," "linked," "coupled," and similar words used in this utility model are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "A plurality" used in this utility model means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The terms "first," "second," and "third" involved in this utility model are only used to distinguish similar objects and do not represent a specific ordering of objects.

[0032] The wicking problem in electronic atomizers is mainly due to uneven distribution of the aerosol-generating matrix or uneven heat transfer during the heating process of the mesh heating wire. This unevenness can lead to localized overheating, causing the aerosol-generating matrix to overheat and resulting in wicking. Furthermore, the mesh heating wire has relatively weak structural strength and is prone to deformation during actual use, further exacerbating the uneven heating problem. Please refer to [link / reference]. Figure 1 To address the issue of uneven heating, the first embodiment of this application provides an electronic atomizer 10, including a main unit 20 and an atomizing core 1, the atomizing core 1 being mounted on the main unit 20. The atomizing core 1 is used to heat the atomized aerosol generating matrix to produce aerosol for user use; the main unit 20 is used to store and provide the liquid aerosol generating matrix to the atomizing core 1; the main unit 20 is also used to supply power to the atomizing core 1 and control the heating power supply. Specifically, the main unit 20 has components such as a battery, a liquid storage tank, and a control board.

[0033] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The atomizing core 1 includes a heating tube 6 and a liquid guiding component 5. The heating tube 6 comprises a tube body 2 and a heating element 4 disposed on the surface of the tube body 2. The heating element 4 heats the tube body 2. The tube body 2 serves to conduct heat and house the heating element 4, contributing to uniform heat distribution and achieving uniform heating of the aerosol generation matrix, avoiding the problem of core clogging caused by excessively high local temperatures. Simultaneously, the installation of the heating element 4 on the tube body 2 enhances the structural strength of the heating element 4, preventing deformation during use and thus avoiding the problem of uneven heating exacerbated by deformation. The heating element 4 can be located on the inner wall and / or outer wall of the tube body 2; the heating element 4 can be disposed on both the inner and outer surfaces of the tube body 2. When heating elements 4 are disposed on both the inner and outer surfaces of the tube body 2, they can be connected to the battery in series or parallel to form a power supply circuit. Increasing the number of heating elements 4 improves power and atomization volume. The surface of the tube 2 is uniformly distributed with multiple first micropores 3 that penetrate the surface. The multiple first micropores 3 allow the liquid aerosol to permeate into the matrix. The first micropores 3 on the tube 2 can be inherent due to the material of the tube 2 itself, or they can be obtained through post-processing. For example, microporous ceramic tubes have micropores by themselves. Dense ceramic tubes and stainless steel tubes can form micropores through post-processing, such as laser processing.

[0034] The liquid guiding component 5 is fitted onto the outer surface of the heating tube 6 and at least covers the first micropore 3. The liquid guiding component 5 adsorbs and guides the liquid aerosol generating matrix to the tube body 2 for heating and atomization by the heating element 4. The liquid guiding component 5 generally adopts a multi-layer cotton structure and can use high-temperature resistant outer cotton, such as linen cotton. The aerosol generating matrix provided by the main unit 20 is located on the outside of the tube body 2. After the heating element 4 is powered on, it heats the tube body 2. The first micropore 3 on the tube body 2, in conjunction with the liquid guiding component 5, allows the liquid aerosol generating matrix to penetrate into the tube body 2 through multiple first micropores 3. When the tube body 2 is heated, the liquid aerosol generating matrix is ​​atomized during the penetration process into the tube body 2 to form an aerosol. The airflow drawn from the inside of the tube body 2 carries away the aerosol, causing the liquid aerosol generating matrix to generate a siphon effect at the first micropore 3, so that the liquid aerosol generating matrix is ​​continuously supplied and atomized. The heating element 4 can be made by thick-film printing of resistive paste on the surface of the tube body 2 and heated after being powered on. Using a resistive paste as the raw material for the heating element 4, it is printed onto the surface of the tube body 2 through a thick film printing process. This can enhance the bonding between the heating element 4 and the tube body 2, and has higher stability compared to the existing sintering method of the mesh and the tube body 2.

[0035] Using a resistance-based slurry heating method allows for temperature control and avoids slurry smudging issues. Specifically, the TCR (Temperature Coefficient of Resistance) parameter of the resistance slurry can be modified, and the heating element can be designed as a single or dual-electrode system. Single-electrode power: 0.8Ω resistance, 16.2W power; Dual-electrode power: 1.2Ω + 1.2Ω resistance, 21.6W power; TCR value: 1000ppm / ℃. In some electronic atomizers, temperature control (TC) technology is achieved by detecting and controlling the temperature of the heating wire. This is typically not done through a temperature sensor, but by measuring the resistance change of the heating wire. Since the resistance of metal changes with increasing temperature, the control chip utilizes this characteristic to control the heating wire temperature through a preset TCR. The control chip estimates the current temperature by monitoring these changes in real time and adjusts the current through the heating wire to maintain the user-set temperature.

[0036] Please continue reading. Figure 3 and Figure 4 Furthermore, the heating element 4 is in a continuous "S" shape. The heating element 4 includes multiple parallel-spaced first heating elements 41 and second heating elements 42 connecting adjacent first heating elements 41. The first heating elements 41 are arranged along a first preset direction, and the second heating elements 42 are arranged along a second preset direction. The first preset direction is perpendicular to the second preset direction. The first preset direction is along the circumferential or axial direction of the tube body 2, and the second preset direction is along the axial or circumferential direction of the tube body 2. Through the above-described "S"-shaped distribution of the heating element 4, as the heating element 4 extends circumferentially and axially along the surface of the tube body 2, the surface of the tube body 2 can be fully utilized to arrange the heating element 4, increasing the distribution area of ​​the heating element 4 on the surface of the tube body 2. This helps the heating element 4 to uniformly cover the surface of the tube body 2, greatly improving the uniformity of heating and effectively reducing the occurrence of core clogging problems.

[0037] Please continue reading. Figure 3 , Figure 4 and Figure 5Furthermore, the first micropores 3 can be distributed locally along the circumferential surface of the tube body 2 in an array shape. When the first micropores 3 are distributed locally along the circumferential surface of the tube body 2 in an array shape, that is, the first micropores 3 are evenly distributed on the surface of the tube body 2, and the heating element 4 covers the local area of ​​the first micropores 3 with a structural thick film printed on the surface of the tube body 2. When the first micropores 3 are distributed locally along the circumferential surface of the tube body 2 in an array shape, such as the tube body 2 surface being printed with a segmented thick film from top to bottom in a meandering array of first micropores 3, and each segment of first micropores 3 having sufficient gaps (without perforation) for the heating element 4 to extend and bypass; the array shape is intended to indicate that there are several first micropores 3 in the array shape, and the specific shape can be arranged according to the shape of the tube body 2 and the setting of the heating element 4, such as rectangle, triangle, circle, etc., which will not be elaborated here. By arranging the aforementioned first micropores 3, they can be evenly distributed throughout the tube body 2, allowing the liquid aerosol generating matrix to flow more smoothly during atomization and making the entire siphon effect more stable. This results in a more stable heating and atomization of the liquid aerosol generating matrix into aerosol under the action of the heating element 4. Alternatively, if the pore size is large, the heating element 4 can be printed within the pores. That is, a permeation region 9 is formed between two adjacent first heating elements 41, with multiple first micropores 3 evenly distributed within this region. Multiple first micropores 3 allow the liquid aerosol generating matrix or aerosol to flow through. By placing multiple first micropores 3 within the permeation region 9 between two adjacent first heating elements 41, the surface area of ​​the tube body 2 is fully utilized, facilitating the penetration of the aerosol generating matrix into the tube body 2 via the first micropores 3, thus improving atomization efficiency. Furthermore, the presence of first micropores 3 between any two adjacent heating elements helps to achieve uniform heating and atomization of the aerosol generating matrix, enhancing the user experience.

[0038] Please see Figure 6 In one embodiment, the heating tube 6 further includes a porous ceramic layer 7, with the heating element 4 located between the porous ceramic layer 7 and the tube body 2. The porous ceramic layer 7 has multiple second micropores 8 for the aerosol generation matrix or aerosol to flow through. When the heating element 4 is located on the outer wall of the tube body 2, the porous ceramic layer 7 is located between the heating element 4 and the liquid guiding component 5, and has excellent liquid guiding performance. Under the action of the porous ceramic layer 7, it works together with the liquid guiding component 5 to guide the aerosol generation matrix to the heating element 4. At the same time, it also has a wrapping effect on the heating element 4, which can prevent the heating element 4 from falling off the tube body 2 during long-term high-temperature use, thereby improving structural stability.

[0039] The porous ceramic layer 7 can be either dense ceramic or microporous ceramic. Dense ceramics, such as alumina ceramics, have almost no micropores. When alumina ceramic is used in the porous ceramic layer 7, micropores can be formed on the alumina ceramic by laser engraving later. When microporous ceramic is used in the porous ceramic layer 7, the microporous ceramic itself has micropores. During the manufacturing process of microporous ceramics, a certain amount of controllable micropores can be created as needed using pore-forming agents and other auxiliary materials. This allows the microporous ceramic to siphon liquid aerosols to generate a matrix, ensuring a continuous supply of the liquid aerosol generation matrix. The porous ceramic layer 7 can also be made of composite ceramics, combining dense ceramics and microporous ceramics.

[0040] In another embodiment, the tube body 2 is one of the following: a stainless steel tube body, an alumina ceramic tube body, or a microporous ceramic tube body. The tube body 2, made of stainless steel, has good thermal conductivity, which helps to improve the uniformity of heat distribution within the tube body 2, thereby improving the uniformity of heating. During the manufacturing process of the stainless steel tube body, a flat stainless steel plate can first be laser-perforated and the heating element 4 can be printed in thick film before being processed into a coil to form a tube. To ensure that the thermal conductivity of the tube body 2 can be quickly achieved, enabling the heat generated by the heating element 4 after being energized to be transferred to the entire surface of the tube body 2, the thermal conductivity of the stainless steel tube can be selected as 23-26 W / m·K, such as 23 W / m·K, 24 W / m·K, 25 W / m·K, 25.5 W / m·K, or 26 W / m·K, etc. The stainless steel tube body specification can be SUS444.

[0041] The tube body 2 can be made of dense ceramic or microporous ceramic. Specifically, dense ceramic can be alumina ceramic. When alumina ceramic is used, a first micropore 3 can be formed on the alumina ceramic using laser engraving. The pore size of the first micropore 3 can be selected as 0.05 mm. When microporous ceramic is used, the micropores within the tube body 2 allow for the siphoning of liquid aerosols to generate a matrix, ensuring a continuous supply of the liquid aerosol generation matrix. The purpose of using ceramic material for the tube body 2 is to reduce the use of metal materials, reduce the leakage of heavy metals, and improve safety performance. Simultaneously, it ensures a reliable bond between the tube body 2 and the heating element 4, resulting in higher adhesion of the heating element 4, improving its heating stability, and reducing the occurrence of scorching issues.

[0042] Furthermore, the heating element 4 has tab pads at both ends formed by thick-film printing. Specifically, a thick-film printing process is first used to print resistive paste onto the surface of the tube body 2 to form the heating element 4, and then the tab material is covered to form the tab pads. The tab pads can be used to laser weld with the power leads, thereby connecting to the battery to form a power supply circuit; the welding temperature can be 800℃. The leads can be made of pure silver, which has the characteristics of high melting point and high conductivity.

[0043] The atomizing core and electronic atomizer provided in this application include a heating tube comprising a tube body and a heating element disposed on the surface of the tube body. The heating element is used to heat the tube body, and the tube body has the functions of conducting heat and mounting the heating element, which helps to distribute heat evenly and achieve uniform heating of the aerosol generation matrix, avoiding the problem of core clogging caused by excessively high local temperatures.

[0044] Those skilled in the art should understand that 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 have been 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.

[0045] 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 the invention 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. An atomizing core, used in an electronic atomizer, characterized in that, include: A heating tube includes a tube body and a heating element disposed on the surface of the tube body; the surface of the tube body has a plurality of first micropores uniformly distributed therethrough; the heating element is used to heat the tube body; as well as A liquid guiding component is sleeved on the outer surface of the heating tube and at least covers the first micropore.

2. The atomizing core according to claim 1, characterized in that, The heating element is printed onto the surface of the tube body using a thick film.

3. The atomizing core according to claim 2, characterized in that, The heating element is in the shape of a continuous "S". The heating element includes a plurality of first heating elements spaced in parallel and a second heating element connecting two adjacent first heating elements. The first heating elements are arranged along a first preset direction, and the second heating elements are arranged along a second preset direction. The first preset direction is perpendicular to the second preset direction.

4. The atomizing core according to claim 3, characterized in that, The first preset direction is along the circumferential or axial direction of the tube body, and the second preset direction is along the axial or circumferential direction of the tube body.

5. The atomizing core according to claim 3, characterized in that, A permeation region is formed between two adjacent first heating elements, and multiple first micropores are evenly distributed in the permeation region.

6. The atomizing core according to any one of claims 1-5, characterized in that, The heating element is disposed on at least one of the inner wall of the tube and the outer wall of the tube.

7. The atomizing core according to claim 6, characterized in that, The heating tube also includes a porous ceramic layer, and the heating element is located between the porous ceramic layer and the tube body.

8. The atomizing core according to claim 6, characterized in that, The tube body is one of the following: stainless steel tube body, alumina ceramic tube body, or microporous ceramic tube body.

9. The atomizing core according to claim 1, characterized in that, The heating element has tab pads printed on both ends by thick film.

10. An electronic atomizer, characterized in that, include: Host; as well as The atomizing core according to any one of claims 1-9 is mounted on the main unit.

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