Electronic atomization device, atomization assembly thereof and manufacturing method of atomization assembly

Abstract

The invention discloses an electronic atomization device, an atomization assembly of the electronic atomization device and a manufacturing method of the atomization assembly. The atomization assembly comprises a porous base body and a heating body, and the porous base body comprises an atomization face; the heating body comprises a heating part, a first electrode part and a second electrode part which are located at the two ends of the heating part respectively, and at least one fixing part. The at least one fixing part is embedded in the porous base body, so that the heating body is mounted on the porous base body, and the heating part is arranged corresponding to the atomizing surface; the heating element has the beneficial effects that the buckling deformation of the heating element can be effectively prevented, so that the phenomena of dry burning, overhigh temperature and generation of harmful substance gas caused by separation of the heating element from liquid due to the buckling deformation of the heating element are prevented, and the service life of the heating element is prolonged.

Description

Technical Field

[0001] The present invention relates to a liquid atomization device, and more particularly to an electronic atomization device, an atomization component thereof, and a manufacturing method of the atomization component. Background Art

[0002] Typical atomization components for electronic atomization devices such as electronic cigarettes include a porous ceramic body for liquid conduction and a heating film disposed on the porous ceramic body. In the related art, the ceramic atomization component is obtained by directly printing electronic paste on a ceramic green body, baking at a high temperature, and then performing electrode and lead processing. However, due to the uneven local concentration of the electronic paste during printing, the resistance value of the heating circuit is uneven, resulting in uneven distribution of the temperature values of the heating film. This easily leads to the disconnection of the heating circuit, causing warping and deformation of the ceramic atomization component. When the warping degree is greater than the ceramic prestress, the ceramic atomization component will crack, thus affecting the service life of the atomization component. In addition, the process cycle is long: after the ceramic matrix is sintered, the heating film needs to be screen-printed for secondary sintering. The screen-printing cycle is long, strictly controlled, and costly. The resistance stability is affected by the preparation process, and it is necessary to screen for appearance defects and cracks. Moreover, since the heating film is formed by sintering and overlapping alloy particles, internal microscopic defects cannot be eliminated, and the internal microscopic structure is unevenly distributed. This results in poor temperature uniformity of the heating film during heating, poor stress distribution, and easy formation of local concentrated stress, leading to further expansion of cracks and defects, and ultimately failure. There is a risk of an increase in resistance due to oil shortage and dry burning during the suction process. Affected by the resistance stability, it is difficult to achieve long life and high power. The heating film is above the ceramic surface, and due to the limitations of the alloy particle size and the screen-printing stencil, it is difficult to make the film width and film thickness thinner, resulting in difficult oil infiltration of the e-liquid. The heating film cannot achieve rapid oil immersion and is prone to dry burning and burnt smell, which is not conducive to long life and high-power use. The heating film is closely attached to the ceramic, and the heating film is brittle and has no elasticity. During the suction heat shock process, the local stress is large, easily causing cracking and peeling of the heating film.

[0003] In traditional porous ceramic heating components, the heating element is made of metal or alloy, and its coefficient of thermal expansion is generally greater than that of the porous ceramic. When the heating element generates heat, the expansion rate of the heating element is greater than that of the ceramic body, resulting in warping and deformation of the heating element, causing part of the heating element to detach from the ceramic. As a result, the local temperature of this part becomes too high due to dry burning, ultimately leading to the melting of the heating element. On the other hand, it also causes chemical reactions of the e-liquid around the high-temperature part, generating harmful substances. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an improved electronic atomization device, an atomization component thereof, and a manufacturing method of the atomization component.

[0005] To solve the above technical problems, the present invention constructs an atomization component, which includes a porous matrix and a heating element. The porous matrix includes an atomization surface; the heating element includes a heating part, a first electrode part and a second electrode part respectively located at both ends of the heating part, and at least one fixing part; the at least one fixing part is embedded in the porous matrix, so that the heating element is mounted on the porous matrix, and the heating part is arranged corresponding to the atomization surface; the at least one fixing part is correspondingly connected to at least one of the first electrode part and the second electrode part.

[0006] Preferably, in the atomization component constructed by the present invention, the at least one fixing part includes at least one first fixing part and at least one second fixing part arranged at intervals, and the first fixing part and the second fixing part are respectively connected to the first electrode part and the second electrode part.

[0007] Preferably, in the atomization component constructed by the present invention, the porous matrix material is porous diatomite; the heating element is integrally formed on the porous matrix by sintering.

[0008] Preferably, in the atomization component constructed by the present invention, the porous matrix is made of diatomite ceramic material.

[0009] Preferably, in the atomization component constructed by the present invention, the first electrode part and the second electrode part are in the shape of rectangular sheets.

[0010] Preferably, in the atomization component constructed by the present invention, the first electrode part is provided with at least two first positioning holes; the second electrode part is provided with at least two second positioning holes; the first positioning holes and the second positioning holes play a role in positioning the heating element in the mold cavity.

[0011] Preferably, in the atomization component constructed by the present invention, at least one fixing hole is provided on the at least one fixing part. During the integral forming process, the porous matrix passes through the at least one fixing hole to form at least one locking column corresponding to the at least one fixing hole; and / or, the at least one fixing part includes a part with a larger size away from the heating part and a part with a smaller size close to the corresponding first electrode part or second electrode part.

[0012] Preferably, in the atomization component constructed by the present invention, the at least one fixing part is trapezoidal, wherein the short side part of the at least one trapezoidal fixing part is located close to the corresponding first electrode part or second electrode part, and the long side part of the trapezoid is located away from the corresponding first electrode part or second electrode part; or, the at least one fixing part is T-shaped, and the corresponding first electrode part or second electrode part is connected to the lower end of the T shape.

[0013] Preferably, in the atomization assembly constructed in the present invention, the heating part includes a first welding part and a second welding part located at both ends; the atomization assembly further includes two electrode leads, and the two electrode leads are respectively electrically connected to the first welding part and the second welding part.

[0014] Preferably, in the atomization assembly constructed in the present invention, the heating part includes a heating mesh; the heating mesh includes heating wires, the cross-section of the heating wires is trapezoidal, the long side of the trapezoid is buried into the atomization surface, and the short side of the trapezoid is slightly higher than the atomization surface or flush with the atomization surface.

[0015] Preferably, in the atomization assembly constructed in the present invention, the heating part is embedded or laid flat on the atomization surface; the porous matrix includes a liquid absorption surface opposite to the atomization surface, and a groove is formed by the depression of the liquid absorption surface in the direction facing the atomization surface.

[0016] Preferably, in the atomization assembly constructed in the present invention, the material used for the heating element is an iron-chromium-aluminum (FeCrAl) alloy material.

[0017] The present invention also constructs an electronic atomization device, including the atomization assembly described in any one of the above.

[0018] The present invention also constructs a manufacturing method of the atomization assembly described in any one of the above, including the following steps:

[0019] Step 1: Provide porous ceramic slurry and the heating element;

[0020] Step 2: Form a porous ceramic green body combined with the heating element; wherein, the porous ceramic green body includes a surface corresponding to the formed atomization surface; the fixing part of the heating element is embedded in the porous ceramic green body, and the heating part cooperates with the surface corresponding to the formed atomization surface.

[0021] Step 3: Perform high-temperature sintering on the porous ceramic green body under the conditions of a vacuum degree of (0.2 - 10) Pa and a temperature of 1100°C - 1400°C. After sintering, the porous ceramic green body forms a porous ceramic matrix, and the heating element is integrally combined in the porous ceramic matrix to form the atomization assembly.

[0022] Preferably, in the manufacturing method of the atomization assembly constructed in the present invention, the following step is further included between Step 2 and Step 3: Perform debinding sintering on the porous ceramic green body in an aerobic environment at a temperature of 200°C - 800°C to obtain the degummed porous ceramic green body.

[0023] The beneficial effects of the present invention:

[0024] It can effectively prevent the heating element from warping and deforming, thereby preventing it from detaching from the liquid due to warping and deforming, resulting in dry burning, causing excessive temperature and generating harmful substance gases, and extending its service life. Description of the Drawings

[0025] Figure 1 is a schematic three-dimensional structure diagram of an atomization component in some embodiments of the present invention;

[0026] Figure 2 is Figure 1 a schematic three-dimensional structure diagram when the bottom of the atomization component shown is facing upward;

[0027] Figure 3 is Figure 1 a schematic exploded three-dimensional structure diagram of the atomization component shown;

[0028] Figure 4 is Figure 1 a schematic cross-sectional structure diagram of the atomization component shown in the A-A direction;

[0029] Figure 5 is a schematic three-dimensional structure diagram of a heating element of an atomization component in some other embodiments of the present invention;

[0030] Figure 6 is a schematic three-dimensional structure diagram when the bottom of the atomization component in still some other embodiments of the present invention is facing upward;

[0031] Figure 7 is Figure 6 a schematic exploded three-dimensional structure diagram of the atomization component shown;

[0032] Figure 8 is a schematic three-dimensional structure diagram of a heating element of an atomization component in yet some other embodiments of the present invention;

[0033] Figure 9 is Figure 8 a schematic cross-sectional structure diagram of the heating element in the atomization component shown. Detailed Embodiments

[0034] The following further details and clearly and completely describe the specific structure, preparation method and implementation effect of the present invention in combination with this embodiment and the drawings. Now refer to the drawings, in which the same reference numerals represent the same structural elements or drawing features of the present invention.

[0035] Figures 1 to 3Shown is the atomization component 1 in some embodiments of the present invention. The atomization component 1 can be used in electronic atomization devices such as electronic cigarettes to heat and atomize liquid media such as e-liquid. The electronic atomization device 1 can include a porous ceramic matrix 10, a heating element 20, and two electrode leads 30. The porous ceramic matrix 10 is used to absorb and transport the liquid medium. The heating element 20 is mounted on the porous ceramic matrix 10 and is used to heat and atomize the liquid medium absorbed by the porous ceramic matrix 10. In some embodiments, the heating element 20 is integrally formed on the porous ceramic matrix 10 by sintering, so that the combination of the two is more firm and the atomization effect is better. It can be understood that in some embodiments, other porous matrices can also be used to replace the porous ceramic matrix. The two electrode leads 30 are respectively welded to both ends of the heating element 20.

[0036] In some embodiments, the porous ceramic matrix 10 is generally rectangular parallelepiped-shaped and can include a liquid absorption surface 11 at the top and an atomization surface 12 at the bottom opposite to the liquid absorption surface 11. The liquid absorption surface 11 is used to contact the liquid medium to suck the liquid medium into the porous ceramic matrix 10. The atomization surface 12 is used to contact the heating element 20 to heat and atomize the liquid medium in the porous ceramic matrix 10 via the atomization surface 12. It can be understood that the liquid absorption surface 11 and the atomization surface 12 are not limited to being oppositely arranged. In some cases, they can also be adjacently arranged.

[0037] In some embodiments, the porous ceramic matrix 10 can be made of diatomite ceramic material. The diatomite ceramic undergoes a phase change from α-cristobalite to β-cristobalite within a certain temperature range (180°C - 270°C). This phase change causes the diatomite ceramic to have a certain deformation within a certain temperature range, that is, it has a certain coefficient of thermal expansion. Specifically, by adjusting the content of diatomite in the diatomite ceramic, its coefficient of thermal expansion can be controlled within a certain range (18 - 45*10 -6 / °C). By adjusting the content of diatomite, the coefficient of thermal expansion of the porous ceramic body 10 will be greater than or equal to the coefficient of thermal expansion of the heating element 20, thereby preventing the alloy heating element 20 embedded on the porous ceramic body 10 from warping and deforming away from the porous ceramic body 10. The heating element 20 that has separated from the porous ceramic body 10 will cause dry burning due to non-contact with the e-liquid. On the one hand, this dry burning will cause the local temperature of the heating element to be too high and fuse the heating element. On the other hand, the high temperature generated by dry burning will also cause chemical reactions with the e-liquid, producing harmful substances, which enter the human body with the atomized gas and endanger human health.

[0038] In some embodiments, the liquid absorption surface 11 may be recessed toward the atomization surface 12 to form a groove 110. On the one hand, the groove 110 can be used to increase the liquid absorption area. On the other hand, it can be used to shorten the distance between the atomization surface 12 and the liquid absorption surface 11 to improve the liquid transmission efficiency. In some embodiments, the atomization surface 12 may be flat, and it may include a first embedding groove 121 and a second embedding groove 122 arranged in parallel at intervals to respectively fix the first fixing portion 21 and the second fixing portion 22 of the heating element 20 therein. In some embodiments, the first embedding groove 121 and the second embedding groove 122 are parallel to each other in the length direction and perpendicular to the atomization surface 12 in the depth direction. It can be understood that the first embedding groove 121 and the second embedding groove 122 are not limited to being on the atomization surface.

[0039] In some embodiments, the porous ceramic substrate 10 may further include a first step 13 and a second step 14, and the first step 13 and the second step 14 are respectively arranged on two opposite sides of the porous ceramic substrate 20 to facilitate the installation of the porous ceramic substrate 10 in the electronic atomization device.

[0040] In some embodiments, the heating element 20 may include a first fixing portion 21, a second fixing portion 22, and a heating portion 23. The first fixing portion 21 and the second fixing portion 22 are respectively connected to two ends of the heating portion 23 and extend toward one side of the heating portion 23 for respectively being fixed in the first embedding groove 121 and the second embedding groove 122 on the atomization surface 12. In some embodiments, the first fixing portion 21, the second fixing portion 22, and the heating portion 23 may be integrally formed by etching or stamping a metal sheet. The heating portion 23 is used to be in close contact with the atomization surface 12 to heat the liquid medium in the porous ceramic substrate 10 and atomize it through the atomization surface 12. The heating portion 23 is generally arranged in an S-shaped bend on a plane to form a heating mesh. On the one hand, it can make the heating portion 23 evenly heated, reduce the stress unevenness caused by uneven heating of the heating element 20, and extend the service life of the heating element 20. On the other hand, it can make the atomization surface 12 evenly atomize the liquid medium.

[0041] In some embodiments, the heating element 20 is made of a metal sheet such as a nickel-chromium alloy sheet, an iron-chromium-aluminum alloy sheet, or a stainless-steel sheet. Preferably, the heating element 20 can be made of an iron-chromium-aluminum (FeCrAl) alloy material. The iron-chromium-aluminum (FeCrAl) alloy material can form a dense aluminum oxide film on its surface at a high temperature with a vacuum degree of (0.2 to 10 Pa), preventing the iron-chromium-aluminum (FeCrAl) alloy material from being oxidized. Specifically, during the process of integrally forming the heating element 20 made of the iron-chromium-aluminum (FeCrAl) alloy material with the ceramic slurry into the above-mentioned atomization assembly 1, the surface of the heating element 20 is oxidized into a dense aluminum oxide film. Preferably, the conditions for oxidizing into a dense aluminum oxide film are: a vacuum degree of 0.2 - 10 Pa and a temperature of 1100°C - 1400°C. The dense aluminum oxide film can effectively prevent the heating element 20 from contacting and oxidizing with the e-liquid medium, undergoing chemical reactions, and generating heavy metals, so that during atomization, it is inhaled into the human lungs together with the atomized gas, affecting human health.

[0042] Preferably, the heating element 20 includes an S-shaped mesh heating part 23, which has a dense structure, a uniform internal microstructure distribution, smooth circuit conduction, a uniform temperature distribution in the mesh heating part 23 during the heating process, and no excessive concentrated stress. In addition, when the mesh heating part 23 is made of metal, it has good toughness, will not fail due to defects and cracks, has excellent resistance stability, does not require appearance defect and dry-burning performance tests, can achieve the long life of the heating element 20, can be used at high power, and the stable resistance is beneficial to the design of circuit temperature control.

[0043] In some embodiments, since the heating element 20 is made of a metal sheet, for example, through a stamping process, its process cycle is short and the cost is low: the heating element 20 and the porous ceramic matrix 10 can be integrally formed and sintered at one time more conveniently, and the process operation is simple and the cost is low.

[0044] In some embodiments, the heating part 23 can be formed into a mesh by an etching process, and the film width and film thickness can be made very thin. During the preparation process, the heating part 23 can be embedded in the porous ceramic matrix 10, that is, the plane of the heating part 23 of the heating element 20 is roughly flush with the atomization surface of the porous ceramic matrix 10 or slightly buried into the atomization surface, but it does not affect atomization and can quickly soak up liquid media such as e-liquid. When applied in an electronic cigarette, it can achieve a fast fuel supply effect, improve the e-liquid matching, have a high flavor reduction degree, and can achieve long life and high power.

[0045] In some embodiments, the metal heating element 20 is embedded in the porous ceramic matrix 10 and has a good combination with the porous ceramic matrix 10. After the heating element 20 is arranged in a mesh shape, it has elasticity, and the stress is easily released during the suction heat shock and it is not easy to peel off the film.

[0046] In some embodiments, the heating element 20 is integrally formed in the porous ceramic matrix 10, and its heating part 23 is closely attached to the atomization surface 12 (i.e., laid flat on the atomization surface 12). The first fixing part 21 and the second fixing part 22 are in the shape of rectangular sheets in some embodiments, embedded in the porous ceramic matrix 10, and are respectively provided with a plurality of first fixing holes 210 and second fixing holes 220. Referring together to Figure 4 , the first fixing holes 210 and the second fixing holes 220 can be used for the material of the porous ceramic matrix 10 to pass through them during the forming process to form locking columns (not labeled) located in the first embedding groove 121 and the second embedding groove 122, locking the first fixing part 21 and the second fixing part 22 in the porous ceramic matrix 10, so that the heating element 20 and the porous ceramic matrix 10 are more firmly integrated after being integrally formed. In some embodiments, the first fixing part 21 and the second fixing part 22 are respectively perpendicular to the plane where the heating part 23 is located. In some examples, the heating part 23 may further include a first welding part 231 and a second welding part 232. The first welding part 231 is respectively located at both ends of the heating part 23 and is respectively connected to the first fixing part 21 and the second fixing part. In some examples, the first welding part 231 and the second welding part 232 are square, and their width is greater than the width of the heating wire in the middle of the heating part 23. The two electrode leads 30 are respectively welded to the first welding part 231 and the second welding part 231 to respectively electrically connect the positive and negative electrodes of the power supply. In some embodiments, the above-mentioned first welding part 231 and second welding part 232 may be respectively a first electrode part and a second electrode part. The first electrode part is a positive electrode or a negative electrode part, and the second electrode part is a negative electrode or a positive electrode part. The first electrode part and the second electrode part replace the electrode leads as the positive and / or negative electrodes. In some examples, the heating element 20 further includes a third fixing part (not shown) located on the heating part 23, which is used to prevent the heating element 20 from warping and deforming away from the atomization surface.

[0047] In the manufacturing process of the above atomization assembly 1, the following steps can be adopted: Step 1: Provide porous ceramic slurry and form the above-mentioned heating element 20 by etching.

[0048] Step 2: Place the first fixing part 21 and the second fixing part 22 of the heating element 20 at preset positions in the cavity to be formed respectively.

[0049] Step 3: Inject the ceramic slurry into the forming cavity where the heating element 20 has been placed, and wait for the ceramic slurry to harden and form. The hardened ceramic slurry forms a blank of the porous matrix 10. The first fixing part 21 and the second fixing part 22 of the heating element 20 are respectively embedded in the blank of the porous matrix 10, and the porous matrix material penetrates through the first fixing holes 210 and the second fixing holes 220.

[0050] Step 4: Take out the green body with the heating element 20 from the molding cavity and perform high-temperature sintering. After sintering, the green body forms a porous ceramic matrix 10, and the heating element 20 is integrally combined in the porous ceramic matrix 10 to form the above-mentioned atomization assembly 1.

[0051] In some embodiments, the material used for the heating element 20 prepared in the above step 1 can be a metal material with rapid heating and uniform heat generation. For example, one of the materials such as nickel-chromium alloy, iron-chromium-aluminum alloy, stainless steel, pure nickel, titanium, nickel-iron, etc. can be used; in some embodiments, the material used for the heating element 20 in the above step 1 is an iron-aluminum-chromium (FeCrAl) alloy material.

[0052] In some embodiments, in the above step 2, the heating element is positioned by passing it through two first positioning holes and two second positioning holes into the corresponding positioning posts in the mold cavity.

[0053] In some embodiments, the above heating element 20 is an integral metal part, which can be integrally formed by one or more of the technologies such as laser cutting technology, stamping technology or etching technology, or the parts of the heating element 20 can be made in batches and then bonded and formed by soldering or other bonding technologies.

[0054] In some embodiments, in step 2, the heating element 20 with rapid heating and uniform heat generation is placed in the molding cavity, and the molten and evenly stirred ceramic slurry is poured into the molding cavity where the heating element 20 is placed at a preset position.

[0055] In some examples, before the high-temperature sintering in the above step 4, add the step: Take out the hardened and formed ceramic slurry to obtain a ceramic heating element blank, and perform debinding sintering on the ceramic heating element blank in an aerobic environment so that the forming agent gasifies at high temperature to obtain a debound green body. Preferably, the above sintering temperature is set at 200°C - 800°C.

[0056] In some embodiments, the high-temperature sintering in the above step 4 uses vacuum high-temperature sintering. Preferably, the sintering vacuum degree is (0.2 - 10) Pa. The high-temperature sintering in the environment of the above vacuum degree (0.2 - 10) Pa can make the heating element 20 made of alloy material formed on the porous ceramic matrix 10 form a dense oxide film. Especially for the heating element 20 made of FeCrAl alloy material, its densification effect is better. This dense oxide film can effectively prevent the heating element 20 from chemically reacting with liquids such as e-liquid, resulting in the precipitation of heavy metals and entering the human lungs with the atomizing gas, affecting human health.

[0057] In some embodiments, the high-temperature sintering temperature in the above step 4 is 1100°C - 1400°C.

[0058] Figure 5The heating element 20a of the atomization component in some other embodiments of the present invention is shown. In some embodiments, the heating element 20a may include a first fixing portion 21a, a second fixing portion 22a, and a heating portion 23a. The first fixing portion 21a and the second fixing portion 22a are respectively connected to both ends of the heating portion 23a and extend toward one side of the heating portion 23a.

[0059] The heating portion 23a is generally bent in an S shape and is closely attached to the atomization surface 12 without being fixedly fixed. In this way, the heating portion 23a can have a space for movement during thermal expansion and contraction, reducing its tensile stress, thereby extending the service life of the heating element 20a. In some embodiments, the first fixing portion 21a and the second fixing portion 22a are in the shape of rectangular sheets, and a plurality of first fixing holes 210a and second fixing holes 220a are respectively provided thereon. Referring together Figure 4 to, the first fixing holes 210a and the second fixing holes 220a can be used for the material of the porous ceramic matrix 10 to pass through during the molding process, so that the heating element 20a and the porous ceramic matrix 10 are more firmly integrated after being integrally formed. In some embodiments, the first fixing portion 21a and the second fixing portion 22a are respectively perpendicular to the plane where the heating portion 23a is located.

[0060] In some examples, the heating portion 23a may further include a first welding portion 231a and a second welding portion 232a. The first welding portion 231 is fixedly connected between the first fixing portion 21a and the heating portion 23a, and the second welding portion 232a is fixedly connected between the second fixing portion 22a and the heating portion 23a. They are used for the connection of the heating portion 23a to the first fixing portion 21a and the second fixing portion 22a respectively, and heat together with the heating portion 23a to heat the liquid medium in the porous ceramic matrix 10 and atomize it through the atomization surface 12. In some examples, the first welding portion 231a and the second welding portion 232a are rectangular, and their areas are substantially the same as those of the fixing portion, which is used to make the heating element firmly fixed to it and not easily break.

[0061] In some examples, the heating element 20a may further include two electrode leads 30a. The two electrode leads are respectively arranged on the first welding portion 231a and the second welding portion 231a, and are respectively perpendicular to the first welding portion 231a and the second welding portion 232a, and are respectively used for electrically connecting the positive and negative poles of the power supply.

[0062] In some embodiments, the first fixing portion 21a and the second fixing portion 22a of the heating element 20a can both be trapezoidal. Among them, the short sides of the trapezoids of both are located near the heating portion 23a, and the long sides of the trapezoids are located away from the heating portion 23a. That is, the first fixing portion 21a and the second fixing portion 22a include a portion with a larger size away from the heating portion 23a and a portion with a smaller size near the heating portion 23a. With this structure, when the first fixing portion 21a and the second fixing portion 22a are integrally embedded in the porous matrix, they are less likely to fall off.

[0063] Figure 6 and Figure 7 Fig. shows the atomizing assembly 1b in still some other embodiments of the present invention. The electronic atomizing device 1b may also include a porous ceramic matrix 10b and a heating element 20b. The heating element 20b can be integrally formed on the porous ceramic matrix 10b by sintering. The heating element 20b can include a first fixing portion 21b, a second fixing portion 22b, and a heating portion 23b. The first fixing portion 21b and the second fixing portion 22b are respectively connected to both ends of the heating portion 23b and extend toward one side of the heating portion 23b. The porous ceramic matrix 10b includes an atomizing surface 12b, and a first embedding groove 121b, a second embedding groove 122b, and a third embedding groove 123b are formed on the atomizing surface 12b. The heating element 20b, the first fixing portion 21b, the second fixing portion 22b, and the heating portion 23b are respectively embedded in the first embedding groove 121b, the second embedding groove 122b, and the third embedding groove 123b. As shown in the figure, the depth of the third embedding groove 123b is equal to the thickness of the heating portion 23b, so that when the heating portion 23b is embedded therein, the outer surface of the heating portion 23b is flush with the atomizing surface 12b. It can be understood that in some embodiments, the depth of the third embedding groove 123b can also be less than or greater than the thickness of the heating portion 23b to meet different requirements. In some embodiments, a plurality of first fixing holes 210b and second fixing holes 220b are respectively provided on the first fixing portion 21b and the second fixing portion 22b.

[0064] Figure 8 and Figure 9 Fig. shows the heating element 20c of the atomizing assembly in still some other embodiments of the present invention. In some embodiments, the heating element 20c can include a heating portion 23c and a first electrode portion 24c and a second electrode portion 25c connected to both ends of the heating portion. The heating portion 23c is generally bent in an S shape and is closely attached to the atomizing surface 12c without being fixedly fixed. In this way, the heating portion 23c can have a space for movement during thermal expansion and contraction, reducing its tensile stress, thereby prolonging the service life of the heating element 20c. The first electrode portion 24c and the second electrode portion 25c are respectively connected to both ends of the heating portion 23c, that is, connected to the two free ends of the S-shaped heating portion 23c.

[0065] In some embodiments, the heating part 23c connected between the first electrode part 24c and the second electrode part 25c has a gradually increasing line width from the connection to the first and second electrodes to the center of the heating part, so as to balance the temperature of the entire heating part 23c and ensure the temperature uniformity of the entire heating part.

[0066] In some embodiments, the cross-section of the heating wire of the heating part 23c is trapezoidal. That is, the surface of the heating part 23c in contact with or embedded in the atomization surface 12c is the surface with a larger area (the surface where the long side of the trapezoid of this cross-section is located), and the surface of the heating part opposite to the atomization surface 12c is the surface with a smaller area (the surface where the short side of the trapezoid of this cross-section is located). This trapezoidal cross-section setting is beneficial for oil climbing on the one hand, and can improve the embedding degree of the heating part 23c itself and the porous ceramic matrix 10c on the other hand, avoiding the warping of the heating part. The cross-sectional shape of the heating wire of the heating part 23c is not limited to trapezoidal, and can also be semi-cylindrical or other shapes that follow different areas of the upper and lower two surfaces.

[0067] In some embodiments, the first electrode part 24c and the second electrode part 25c are rectangular sheets, and a plurality of first positioning holes 240c and second positioning holes 250c are respectively provided thereon, which are used to be placed in the corresponding positioning posts in the mold cavity during the integral molding process to prevent the heating element from shifting under the impact of the ceramic slurry.

[0068] In some embodiments, the heating element 20c may further include a plurality of first fixing parts 21c and a plurality of second fixing parts 22c. The plurality of first fixing parts 21c are respectively located on the opposite sides of the two short sides of the first electrode part 24c and the opposite sides of the two short sides of the second electrode part 25c, and extend toward the side of the heating part 23c, and are used to be integrally formed in the porous ceramic body blank to fix the heating element 20c. In some embodiments, the plurality of first fixing parts 21c and the plurality of second fixing parts 22c may also be respectively located at the ends of the long sides of the first electrode part 24c and the second electrode part 25c far from the heating part 23c. The plurality of second fixing parts 22c are respectively connected to the side edges of the heating part 23c and extend toward the side of the heating part 23c, and are used to be integrally formed in the porous ceramic body blank to fix the heating element 20c. In some embodiments, as Figure 8 shown, the second fixing part 22c is T-shaped, and the end connected to the heating part 23c is the lower end of the T-shape, which is beneficial for fixing the heating element 20c on the one hand and reducing heat dissipation on the other hand.

[0069] In some embodiments, the first fixing portion 21c may include a plurality of first fixing holes 210c provided thereon. The first fixing holes 210c can be used for the material of the porous ceramic matrix 10 to pass through during the molding process, so that the heating element 20c and the porous ceramic matrix 10c are more firmly integrally formed after molding. In some embodiments, the first fixing portion 21c is trapezoidal, with the short side of the trapezoid located near the heating portion 23c and the long side of the trapezoid located away from the heating portion 23c. That is, the first fixing portion 21c includes a portion with a larger size away from the heating portion 23c and a portion with a smaller size near the heating portion 23c. With this structure, when the first fixing portion 21c is integrally embedded in the porous matrix, it is less likely to fall off.

[0070] In some embodiments, the first fixing portion 21c and the second fixing portion 22c are respectively perpendicular to the plane where the heating portion 23c is located.

[0071] The above-disclosed are only some specific embodiments of the present invention, but the present invention is not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An atomization component, comprising a porous matrix and a heating element, wherein the porous matrix includes an atomization surface; Characterized in that, The heating element includes a heating part, a first electrode part and a second electrode part respectively located at two ends of the heating part, and at least one fixing part; the at least one fixing part is embedded in the porous matrix, so that the heating element is mounted on the porous matrix, and the heating part is arranged corresponding to the atomization surface; the at least one fixing part is correspondingly connected to at least one of the first electrode part and the second electrode part.

2. The atomization component according to claim 1, Characterized in that, The at least one fixing part includes at least one first fixing part and at least one second fixing part arranged at intervals, and the first fixing part and the second fixing part are respectively connected to the first electrode part and the second electrode part.

3. The atomization component according to claim 1, Characterized in that, The porous matrix material is porous diatomite; the heating element is integrally formed on the porous matrix by sintering.

4. The atomization component according to claim 3, Characterized in that, The porous matrix is made of diatomite ceramic material.

5. The atomization component according to claim 3, Characterized in that, The first electrode part and the second electrode part are in the shape of rectangular sheets.

6. The atomization component according to claim 5, Characterized in that, The first electrode part is provided with at least two first positioning holes; the second electrode part is provided with at least two second positioning holes; the first positioning holes and the second positioning holes play a role in positioning the heating element in the mold cavity.

7. The atomization component according to claim 1, Characterized in that, At least one fixing hole is provided on the at least one fixing part, and during the integral forming process, the porous matrix penetrates through the at least one fixing hole to form at least one locking post corresponding to the at least one fixing hole; and / or, the at least one fixing part includes a part with a larger size away from the heating part and a part with a smaller size close to the corresponding first electrode part or the second electrode part.

8. The atomization component according to claim 7, Characterized in that, The at least one fixing part is trapezoidal, wherein the short side part of the trapezoid of the at least one fixing part is located close to the corresponding first electrode part or the second electrode part, and the long side part of the trapezoid is located away from the corresponding first electrode part or the second electrode part; or, the at least one fixing part is T-shaped, and the corresponding first electrode part or the second electrode part is connected to the lower end of the T shape.

9. The atomization component according to claim 1, Characterized in that, The heating part includes a first welding part and a second welding part located at both ends; the atomization component further includes two electrode leads, and the two electrode leads are respectively electrically connected to the first welding part and the second welding part.

10. The atomization component according to any one of claims 1 to 9, Characterized in that, The heating part includes a heating mesh; the heating mesh includes heating wires, the cross-section of the heating wires is trapezoidal, the long side of the trapezoid is embedded in the atomization surface, and the short side of the trapezoid is slightly higher than or flush with the atomization surface.

11. The atomization component according to any one of claims 1 to 9, characterized in that, the heating part is embedded or laid flat on the atomization surface; the porous matrix includes a liquid absorption surface opposite to the atomization surface, and a groove is formed by recessing the liquid absorption surface in the direction facing the atomization surface.

12. The atomization component according to any one of claims 1 to 9, characterized in that, the material used for the heating element is an iron-chromium-aluminum (FeCrAl) alloy material.

13. An electronic atomization device, characterized in that, it includes the atomization component according to any one of claims 1 to 12.

14. A manufacturing method of the atomization component according to any one of claims 1 to 12, characterized in that, it includes the following steps: Step 1: Provide porous ceramic slurry and the heating element; Step 2: Form a porous ceramic green body combined with the heating element; wherein, the porous ceramic green body includes a surface corresponding to the formed atomization surface; the fixing part of the heating element is embedded in the porous ceramic green body, and the heating part cooperates with the surface corresponding to the formed atomization surface; Step 3: Perform high-temperature sintering on the porous ceramic green body under the conditions of a vacuum degree of (0.2 to 10) Pa and a temperature of 1100°C - 1400°C. After sintering, the porous ceramic green body forms a porous ceramic matrix, and the heating element is integrally combined in the porous ceramic matrix to form the atomization component.

15. The manufacturing method of the atomization component according to claim 14, characterized in that, the following step is further included between Step 2 and Step 3: Perform debinding sintering on the porous ceramic green body in an aerobic environment at a temperature of 200°C to 800°C to obtain the degummed porous ceramic green body.

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