Atomization core preparation method, atomization core, liquid absorption piece preparation method, liquid absorption piece and atomization device

Abstract

The invention discloses an atomizing core preparation method, an atomizing core, a liquid absorbing piece preparation method, a liquid absorbing piece and an atomizing device. The atomization core is applied to the electronic atomization device, and the preparation method of the atomization core comprises the following steps that S1, a porous metal part is subjected to surface passivation treatment, and the porous metal part serves as a liquid absorption part of the electronic atomization device; and S2, a heating piece is arranged on the passivated porous metal piece, the porous metal piece and the heating piece form an atomizing core, and the heating piece can heat after being electrified so as to heat the liquid matrix kept in the porous metal piece to form aerosol. According to the preparation method of the atomizing core, after the surface of the porous metal part is passivated, the heating part is arranged on the surface of the porous metal part, so that the surface of the porous metal part is insulated, the porous metal part can serve as a liquid absorbing part of the atomizing core, and compared with traditional liquid absorbing parts such as porous ceramics, the porous metal part can avoid the problems of powder falling, blind holes, low strength and the like; the heat transfer speed is high and heating is uniform.

Description

Technical Field

[0001] The present application relates to the technical field of electronic atomization devices, and in particular to an atomization core preparation method, an atomization core, a liquid absorption component preparation method, a liquid absorption component and an atomization device. Background Art

[0002] An electronic atomization device is an electronic product that generates an aerosol for users to inhale by heating a liquid matrix (e.g., a liquid matrix containing nicotine). The electronic atomization device has a liquid storage chamber and an atomization core inside. The atomization core is used to absorb the liquid matrix in the liquid storage chamber and atomize the liquid matrix to form an aerosol for users to inhale. The atomization core generally includes a liquid absorbing member and a heating member. The liquid absorbing member is a porous member used to absorb liquid from the liquid storage chamber. The heating member can generate heat after being powered on, thereby heating the liquid matrix absorbed by the liquid absorbing member to form an aerosol.

[0003] The liquid absorbent needs to be connected to the liquid storage cavity so that the liquid matrix can be absorbed from the liquid storage cavity. Commonly used liquid absorbents are generally porous ceramics or oil-conducting cotton. The oil-conducting cotton is easy to burn when the oil supply is insufficient, and porous ceramics have the problem of powder shedding. In addition, since pore-forming agents are added to porous ceramic parts during the manufacturing process, closed pores are easily formed, resulting in poor liquid absorption effect, and closed pores will lead to unclean wax removal. At the same time, the structural strength of ceramic liquid absorbents is low, and they are easy to deform and fragile. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides an atomizer core preparation method, an atomizer core, a liquid absorption component preparation method, a liquid absorption component and an atomization device.

[0005] This application adopts the following technical solutions:

[0006] A method for preparing an atomizer core, wherein the atomizer core is applied to an electronic atomization device, and the method for preparing the atomizer core comprises the following steps:

[0007] S1. performing a surface passivation treatment on a porous metal piece, wherein the porous metal piece serves as a liquid absorbing piece of the electronic atomization device;

[0008] S2. A heating element is arranged on the porous metal piece after passivation treatment. The porous metal piece and the heating element form an atomization core. The heating element can generate heat after being energized to heat the liquid matrix retained in the porous metal piece to form an aerosol.

[0009] In some embodiments, step S1 specifically includes:

[0010] S11, immersing the porous metal part in a NaCl solution, and electrifying the NaCl solution, and then taking out the porous metal part and cleaning it;

[0011] S12, baking the porous metal part to form an oxide layer for passivation, thereby obtaining a passivated porous metal part;

[0012] S13, the passivated porous metal part is soaked in NaOH solution to expand the pores, and then self-passivated with NaCl solution, and then taken out and cleaned to obtain a passivated metal part with a pore size of 10μm to 50μm and a porosity of 40% to 90%.

[0013] In some embodiments, in step S11, the NaCl solution is a 2.5% to 4.5% NaCl solution, the power-on voltage is 0.8V to 12V, and the power-on time is 38ms to 1000ms;

[0014] In step S12, the baking temperature is 700° C. to 1100° C., and the baking time is 0.5 h to 24 h;

[0015] In step S13, the concentration of the NaOH solution is 1 mol / L to 5 mol / L, the ambient temperature of the porous metal part soaking in the NaOH solution is room temperature to 60°C, the soaking time is 0.5h to 24h, and the NaCl solution is 0.1% to 3.5% NaCl solution.

[0016] In some embodiments, the porous metal member is made of titanium, titanium alloy, nickel, nickel-chromium alloy or stainless steel.

[0017] In some embodiments, in step S2, the heating element is disposed on the porous metal element by printing, pasting or welding.

[0018] In some embodiments, in step S2, the heating element is formed by printing an electrothermal material slurry on a porous metal element.

[0019] In some embodiments, the electrothermal material paste is silver, nickel or graphene paste.

[0020] An atomizer core is made by the atomizer core preparation method as described above, wherein the porous metal part comprises a liquid absorption surface and an atomization surface opposite to the liquid absorption surface, the liquid absorption surface is used to absorb liquid matrix, and the heating element is arranged on the atomization surface.

[0021] A method for preparing a liquid absorbent, the method comprising the following steps:

[0022] The porous metal piece is subjected to surface passivation treatment to form a metal liquid-absorbing piece with surface insulation.

[0023] A liquid absorbent is prepared by the above-mentioned preparation method of the liquid absorbent.

[0024] An atomizing device comprises an atomizing core made by adopting the atomizing core preparation method.

[0025] An atomizing device, comprising:

[0026] A liquid storage member, wherein a liquid storage cavity is formed inside the liquid storage cavity, and the liquid storage cavity is used to store a liquid matrix;

[0027] A liquid absorbing member, wherein the liquid absorbing member is a porous metal member, an insulating layer is formed on the surface of the porous metal member, the liquid absorbing member comprises a liquid absorbing surface and an atomizing surface which are arranged opposite to each other, and the liquid absorbing surface is in fluid communication with the liquid storage chamber;

[0028] A heating element is disposed on the atomizing surface, or is indirectly connected to the atomizing surface through an intermediate liquid guide, and the heating element can generate heat to heat the liquid matrix to form an aerosol after being energized;

[0029] A battery is used to supply power to the heating element.

[0030] The benefit of the present application lies in that a heating element is arranged on the surface of the porous metal piece after the surface of the porous metal piece is passivated, thereby insulating the surface of the porous metal piece and serving as a liquid absorbing element of the atomization core to separate the liquid matrix from the heating element.

[0031] Compared with traditional porous ceramics and other liquid-absorbing parts, the porous metal parts in this application adopt metal powder metallurgy process, which is different from the process of adding pore-forming agents to ceramics, and can avoid problems such as powder loss, blind holes and low strength. The holes inside the porous metal parts are through holes, which have a larger liquid output, a large heating area, a fast heat transfer speed, and more uniform heating, so that the electronic atomization device can produce more smoke and have a fuller taste. At the same time, the porous metal parts are easy to assemble and can be produced automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The steps of the method for preparing an atomizer core provided in the embodiment of the present application are as follows: Figure 1 ;

[0033] Figure 2 The steps of the method for preparing an atomizer core provided in the embodiment of the present application are as follows: Figure 2 ;

[0034] Figure 3 The steps of the method for preparing an atomizer core provided in the embodiment of the present application are as follows: Figure 3 ;

[0035] Figure 4 It is a structural schematic diagram of an atomizer core provided in an embodiment of the present application;

[0036] Figure 5 It is a structural schematic diagram of an electronic atomization device provided in an embodiment of the present application;

[0037] Figure 6It is a structural schematic diagram of an atomizer core provided in an embodiment of the present application;

[0038] Figure 7 It is a schematic diagram of the structure of an electronic atomization device provided in an embodiment of the present application.

[0039] In the figure:

[0040] 10. Atomization device;

[0041] 110. Atomizer core;

[0042] 111, liquid absorbing part; 112, heating part; 1121, electrode; 1122, pin; 113, intermediate liquid guiding part;

[0043] 120. liquid storage member; 121. liquid storage chamber;

[0044] 130.Battery. DETAILED DESCRIPTION

[0045] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It will be appreciated that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. The embodiments described are only a part of the embodiments of the present invention, rather than all of the embodiments. It should also be noted that, for ease of description, only the parts related to the present application, rather than all of the structures, are shown in the accompanying drawings.

[0046] The present application provides a method for preparing an atomizer core. Figure 1 As shown, the method for preparing the atomizer core includes the following steps:

[0047] S10, performing a surface passivation treatment on the porous metal piece, wherein the porous metal piece serves as a liquid absorbing piece of the electronic atomization device;

[0048] S20, setting a heating element on the porous metal piece after the passivation treatment, the porous metal piece and the heating element forming an atomization core, the heating element can generate heat after being energized to heat the liquid matrix retained in the porous metal piece to form an aerosol.

[0049] The above-mentioned atomizer core is used in an electronic atomizer device. In the embodiment of the present application, as described in the above-mentioned step S1, reference Figure 4 and Figure 5 , a porous metal piece is used as the liquid absorbing piece 111, and the porous metal piece 111 is subjected to surface passivation treatment, so that the surface of the porous metal piece 111 is insulated. As described in step S2, reference Figure 4 and Figure 5 Then, a heating element 112 is arranged on the surface of the porous metal element 111. Figure 5As shown, the heating element 112 is disposed on a side of the porous metal member 111 away from the liquid storage chamber 121. The heating element 112 can generate heat after being energized, thereby heating the liquid matrix retained in the porous metal member 111 to form an aerosol.

[0050] refer to Figure 5 One side of the porous metal part 111 is adjacent to the liquid storage chamber 121 of the electronic atomization device 10, and this side is the liquid absorption surface a of the porous metal part 111. The liquid absorption surface a is in fluid communication with the liquid storage chamber 121, and can absorb liquid matrix from the liquid storage chamber 121. The side of the porous metal part 111 away from the liquid storage chamber 121 is the atomization surface b, and the heating element 112 is arranged on the atomization surface b. After the heating element 112 is powered on and heated, the liquid matrix can be heated and atomized on the atomization surface b. As the liquid matrix in the porous metal part 111 is continuously atomized, the liquid matrix will be continuously absorbed into the porous metal part 111 from the liquid absorption surface a by the porous metal part 111, thereby continuously forming an aerosol.

[0051] The liquid matrix may include nicotine preparations, glycerin, propylene glycol, flavors and fragrances, flavor components, etc. The aerosol produced by the user inhaling the liquid matrix atomization mainly meets the demand for nicotine or flavor components. This type of liquid matrix is ​​the liquid matrix of an electronic atomization device such as an electronic cigarette. As a medical device electronic atomization device, the liquid matrix stored inside it includes active functional components, glycerin, propylene glycol, etc. The aerosol produced by the user inhaling such a device is mainly used to treat respiratory diseases, or to inhale certain medicinal active ingredients through the lungs. The relevant implementation plans provided in this application can be applied to the above two types of devices, and are not limited here.

[0052] Figure 4 The porous metal member 111 shown is in a block shape, such as a rectangular block, or a block of other shapes, and is mainly used in a flat-plate heating type electronic atomization device. Figure 6 As shown, the porous metal member 111 may also be a hollow cylinder, which is applied to a central heating type electronic atomization device. Figure 6 As shown, the outer surface of the hollow cylindrical porous metal member 111 is the liquid absorption surface, and the inner surface is the atomization surface. The heating element 112 is arranged on the inner surface of the porous metal member 111. It is understood that the porous metal member 111 can also be arranged in other shapes as needed, such as a groove shape, a cup shape, etc., which is not limited here.

[0053] like Figure 2 As shown, the above step S10 specifically includes:

[0054] S110, immersing the porous metal part in a NaCl solution, and electrifying the NaCl solution, and then taking out the porous metal part and washing it;

[0055] S120, baking the porous metal part to form an oxide layer for passivation, thereby obtaining a passivated porous metal part;

[0056] S130, the passivated porous metal part is soaked in NaOH solution to expand the pores, and then self-passivated with NaCl solution, and then taken out and cleaned to obtain a passivated metal part with a pore size of 10 μm to 50 μm and a porosity of 40% to 90%.

[0057] Specifically, the porous metal part 111 is made in advance, and the metal powder can be formed by injection molding, compression molding, and then high-temperature sintering to form the porous metal part 111. Then, the porous metal part is passivated through steps S110 to S130. The porous metal part 111 has a thickness of 0.5 to 3.0 mm and a porosity of 40 to 60% before passivation. After the passivation treatment in steps S110 to S130, the pore size can reach 10 to 50 μm and the porosity can reach 40 to 90%.

[0058] Further, in step S110, the NaCl solution is a 2.5% to 4.5% NaCl solution, the power-on voltage is 0.8V to 12V, and the power-on time is 38ms to 1000ms;

[0059] In step S120, the baking temperature is 700°C to 1100°C, and the baking time is 0.5h to 24h;

[0060] In step S130, the concentration of the NaOH solution is 1 mol / L to 5 mol / L, the ambient temperature of the porous metal part soaking in the NaOH solution is room temperature to 60°C, the soaking time is 0.5h to 24h, and the NaCl solution is 0.1% to 3.5% NaCl solution.

[0061] In one embodiment, if Figure 3 As shown, step S10 specifically includes:

[0062] S101, immersing the porous metal part in a 3.5% NaCl solution, and applying power to the porous metal part at a voltage of 0.8V to 12V for 38ms to 1000ms, then taking out the porous metal part and washing it with water;

[0063] S102, baking the porous metal part at a temperature of 700° C. to 1100° C. for 0.5 h to form an oxide layer for passivation, thereby obtaining a passivated porous metal part;

[0064] S103, soak the passivated porous metal parts in 1moL / L~5moL / L NaOH solution at room temperature~60°C for 0.5h~24h to expand the pores, then self-passivate with 0.1%~3.5% NaCl solution, then take out and wash with deionized water to prepare passivated metal parts with a pore size of 10μm~50μm and a porosity of 40%~90%.

[0065] In the above-mentioned method for preparing the atomizer core, the surface of the porous metal member 111 is passivated and then a heating element 112 is arranged on the surface of the porous metal member 111, so that the surface of the porous metal member 111 is insulated. Figure 5 As shown, the porous metal part 111 can be used as the liquid absorbing part 111 of the atomization core 110, which can separate the liquid matrix from the heating element. Compared with traditional porous ceramics and other liquid absorbing parts, the porous metal part 111 in this application adopts a metal powder metallurgy process. Unlike the process of ceramics that requires the addition of pore-forming agents, it can avoid the problems of powder loss, blind holes and low strength of porous ceramics. The liquid holes inside the porous metal part 111 in this application are through holes, and the liquid output is larger. The porous metal part 111 has a large heating area, a fast heat transfer speed, and a more uniform heating. As a result, the electronic atomization device containing the porous metal part 111 has a larger smoke output and a fuller taste. At the same time, the porous metal part 111 is easy to assemble and can be produced automatically.

[0066] The porous metal member 111 can be made of titanium, titanium alloy, nickel, nickel-chromium alloy or stainless steel, etc. Titanium or titanium alloy is preferred.

[0067] refer to Figure 4 As shown, the heating element 112 is arranged on the porous metal member 111 by printing, patch or welding process. In one embodiment, the heating element 112 is formed by printing electric heating material paste on the porous metal member 111. The electric heating material paste can be any material that generates heat when electricity is applied, such as silver, nickel or graphene paste.

[0068] In other embodiments, the heating element 112 can be attached to the porous metal element 111 by a metal pasting process, or welded to the porous metal element 111 by a metal welding process.

[0069] like Figure 4 As shown, electrodes 1121 are provided at both ends of the heating element 112. Figure 4 and Figure 5 A pin 1122 is welded on the electrode 1121 and connected to the battery 130 through the pin 1122, so that the battery 130 supplies power to the heating element 112.

[0070] The embodiment of the present application further provides an atomizer core. The atomizer core 110 is made by the atomizer core preparation method described above.

[0071] like Figure 5 In the figure, the heating element 112 is directly arranged on the atomizing surface b of the porous metal element 111. In other embodiments, as Figure 7 As shown, the heating element 112 can also be indirectly connected to the atomizing surface b of the porous metal element 111 through the intermediate liquid guide element 113. Figure 7In the embodiment shown, the intermediate liquid guide member 113 is a cotton sheet, which is arranged between the porous metal member 111 and the heating element 112, one side of the cotton sheet is in close contact with the atomization surface b of the porous metal member 111, and the other side of the cotton sheet is in close contact with the heating element 112, so that the heating element 112 is indirectly connected to the porous metal member 111 through the cotton sheet. The liquid matrix in the porous metal member 111 flows to the heating element 112 through the cotton sheet.

[0072] In the above embodiment, Figure 7 As shown, the porous metal member 111 and the heating member 112 can be separated, and the porous metal member 111 is a separate liquid absorbing member, and there is no need to Figure 5 The heating element 112 is combined with the porous metal element 111 as in the above embodiment. Based on the above embodiment in which the porous metal element 111 is separated from the heating element 112, the present application embodiment further provides a method for preparing a liquid absorbing element, and the method for preparing a liquid absorbing element comprises the following steps:

[0073] The porous metal piece is subjected to surface passivation treatment to form a metal liquid-absorbing piece with surface insulation.

[0074] Specifically, the porous metal member 111 only needs to be subjected to surface passivation treatment and then installed in the electronic atomization device 10 to be used as a liquid absorbing member.

[0075] The embodiment of the present application further provides a liquid absorbent. The liquid absorbent 111 is made by using the above-mentioned method for making the liquid absorbent.

[0076] The embodiment of the present application also provides an atomization device, which includes an atomization core made by the atomization core preparation method described above.

[0077] refer to Figure 5 , the present application embodiment provides an atomization device. Figure 5 As shown, the atomization device 10 includes a liquid storage component 120 , a liquid absorption component 111 , a heating component 112 and a battery 130 .

[0078] refer to Figure 5 A liquid storage cavity 121 is formed inside the liquid storage member 120, and the liquid storage cavity 121 is used to store the liquid matrix. Figure 5 In the figure, the liquid storage member 120 is the nozzle of the electronic cigarette atomizer 10. In other embodiments, the liquid storage member 120 may also be a separate part for storing liquid matrix instead of the nozzle, which is not limited here. Figure 5 The liquid absorbing member 111 is a porous metal member 111, and an insulating layer is formed on the surface of the porous metal member 111. There are many ways to form the insulating layer, for example, the insulating layer can be formed by passivating the surface of the porous metal member 111. Of course, other methods can also be used, such as spraying or coating the surface of the porous metal member 111 with an insulating material, which is not limited here.

[0079] The liquid absorbing member 111 includes a liquid absorbing surface a and an atomizing surface b which are arranged opposite to each other. Figure 5 As shown, the liquid absorbing surface a is in fluid communication with the liquid storage element 121, and the heating element 112 is disposed on the atomizing surface b of the liquid absorbing element 111. Figure 7 As shown, the heating element 112 is indirectly connected to the atomizing surface b of the liquid absorbing element 111 through the intermediate liquid guiding element 113, and the intermediate liquid guiding element 113 can be, for example, a cotton sheet. When the heating element 112 is powered on, it can generate heat to heat the liquid matrix to form an aerosol. Figure 5 As shown, the battery 130 is used to power the heating element 112. It is understandable that electrodes 1121 may be provided at both ends of the heating element 112, and pins 1122 may be welded on the electrodes 1121, and the heating element is connected to the battery 130 via the pins 1122.

[0080] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation methods of the present application. For those of ordinary skill in the art, various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present application. It is not necessary and impossible to list all implementation methods exhaustively here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A method for preparing an atomizer core, wherein the atomizer core is applied to an electronic atomizer device, characterized in that: The steps include: S1. performing a surface passivation treatment on a porous metal piece, wherein the porous metal piece serves as a liquid absorbing piece of the electronic atomization device; S2. A heating element is arranged on the porous metal piece after passivation treatment. The porous metal piece and the heating element form an atomization core. The heating element can generate heat after being energized to heat the liquid matrix retained in the porous metal piece to form an aerosol.

2. The method for preparing the atomizer core according to claim 1, characterized in that: The step S1 specifically includes: S11, immersing the porous metal part in a NaCl solution, and electrifying the NaCl solution, and then taking out the porous metal part and cleaning it; S12, baking the porous metal part to form an oxide layer for passivation, thereby obtaining a passivated porous metal part; S13, the passivated porous metal part is soaked in NaOH solution to expand the pores, and then self-passivated with NaCl solution, and then taken out and cleaned to obtain a passivated metal part with a pore size of 10μm to 50μm and a porosity of 40% to 90%.

3. The method for preparing the atomizer core according to claim 2, characterized in that: In the step S11, the NaCl solution is a 2.5% to 4.5% NaCl solution, the power-on voltage is 0.8V to 12V, and the power-on time is 38ms to 1000ms; In step S12, the baking temperature is 700° C. to 1100° C., and the baking time is 0.5 h to 24 h; In step S13, the concentration of the NaOH solution is 1 mol / L to 5 mol / L, the ambient temperature of the porous metal part soaking in the NaOH solution is room temperature to 60°C, the soaking time is 0.5h to 24h, and the NaCl solution is 0.1% to 3.5% NaCl solution.

4. The method for preparing the atomizer core according to claim 1, characterized in that: The porous metal piece is made of titanium, titanium alloy, nickel, nickel-chromium alloy or stainless steel.

5. The method for preparing the atomizer core according to claim 1, characterized in that: In the step S2, the heating element is arranged on the porous metal member by printing, pasting or welding process.

6. The method for preparing the atomizer core according to claim 5, characterized in that: In the step S2, the heating element is formed by printing electric heating material slurry on the porous metal element.

7. The method for preparing the atomizer core according to claim 6, characterized in that: The electrothermal material slurry is silver, nickel or graphene slurry.

8. An atomizer core, characterized in that: The porous metal part is prepared by the preparation method according to any one of claims 1 to 7, wherein the porous metal part comprises a liquid absorption surface and an atomization surface opposite to the liquid absorption surface, the liquid absorption surface is used to absorb the liquid matrix, and the heating element is arranged on the atomization surface.

9. A method for preparing a liquid-absorbing member, characterized in that: The steps include: The porous metal piece is subjected to surface passivation treatment to form a metal liquid-absorbing piece with surface insulation.

10. A liquid absorbing member, characterized in that: The method according to claim 10 is used to prepare the product.

11. An atomizing device, characterized in that: It comprises an atomizer core prepared by the preparation method according to any one of claims 1 to 7.

12. An atomizing device, characterized in that: include: A liquid storage member, wherein a liquid storage cavity is formed inside the liquid storage cavity, and the liquid storage cavity is used to store a liquid matrix; A liquid absorbing member, wherein the liquid absorbing member is a porous metal member, an insulating layer is formed on the surface of the porous metal member, the liquid absorbing member comprises a liquid absorbing surface and an atomizing surface which are arranged opposite to each other, and the liquid absorbing surface is in fluid communication with the liquid storage chamber; A heating element is disposed on the atomizing surface, or is indirectly connected to the atomizing surface through an intermediate liquid guide, and the heating element can generate heat to heat the liquid matrix to form an aerosol after being energized; A battery is used to supply power to the heating element.

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