WO2023134196A1 - Atomization core with nano metal coating layer - Google Patents

Abstract

An atomization core with a nano metal coating layer (2), the atomization core comprising a porous body (1) and a heating body, wherein two ends of the heating body are connected to and provided with a resistance lead or an electrode plate; the porous body (1) is provided with a plurality of micropores (10) for absorption, penetration and conduction of an atomization liquid; the porous body (1) comprises at least one evaporation surface (11) for heating and evaporating the atomization liquid to generate an aerosol; and the heating body comprises the nano metal coating layer (2) arranged on the evaporation surface (11) of the porous body (1), wherein the nano metal coating layer (2) is provided with through film holes (20) at positions corresponding to the micropores (10) in the evaporation surface (11), two distal ends of the nano metal coating layer (2) are electrically connected to the resistance lead or the electrode plate, and the nano metal coating layer (2) generates heat and evaporates the atomization liquid after being energized. The atomization core has the beneficial effects of: the actual effective heating area being large, thus the atomization amount being greatly improved; carbon deposition and liquid leakage not being prone to occurring; there being no unbalanced thermal stress when the atomization core operates at a high temperature; and the nano metal coating layer (2) having no risk of disconnection, such that the consistency of a product during use is improved, thus bringing a good usage experience to a user.

Description

Atomization core with nano metal coating layer technical field

The invention relates to the technical field of atomization cores of electronic atomization equipment, and more specifically, the invention relates to an atomization core with a nanometer metal coating layer.

Background technique

The electronic atomization device can heat the solution to be atomized, that is, the atomized liquid, to emit smoke or aerosol for the user to inhale. Existing electronic atomization equipment generally includes a battery assembly and an atomization assembly. The battery assembly contains a battery that supplies power to the atomizer. The atomization assembly includes an atomization core. The atomization core generally includes a porous body and a heating element. The element can atomize the atomizing liquid into aerosol when it is electrified. Electronic atomization equipment is specifically used in electronic cigarettes, medical drug atomization equipment, herbal essence atomization equipment, etc. Its basic work is to provide heating and atomization functions, and the atomization liquid stored in the electronic atomization equipment Solutions such as liquids are converted into vapors, aerosols or aerosols.

The atomizing core is the core component of electronic atomization equipment including electronic cigarettes, and its performance directly determines the atomization efficiency, smoke characteristics, efficacy and safety of the e-liquid. Among them, the heating element is the key part of the atomizer and atomizing core. At present, the traditional heating methods are embedded resistance heating wires, heating sheets or printed resistance heating circuits. In order to increase the area of heating circuits, grid-like resistance wires are also used. However, the actual effective heating area of this type of heating method is small and cannot Good matching with the evaporation surface of the atomizing core, only the part in contact with the heating metal can generate atomization, so the atomization amount of the atomizing liquid is limited; in addition, because only the part of the circuit generates heat, the temperature gradient on the ceramic surface is relatively large , uneven heating, easy to produce carbon deposits and liquid leakage; at the same time, the use of resistance wire or printed circuit heating method produces thermal stress imbalance under high temperature work, and there is also a risk of circuit breaker. The above problems will affect the smoking experience and products. Consistency has a negative impact.

technical problem

The object of the present invention is to provide an atomizing core with a nanometer metal coating layer in order to overcome the deficiencies of the above technologies. The atomization core with a nanometer metal coating layer can increase the amount of atomization, prevent carbon deposition and leakage, and prevent open circuit and improve user experience.

technical solution

The technical solution of the present invention is achieved in the following way: an atomizing core with a nano-metal coating layer, including a porous body and a heating body, the two ends of the heating body are connected with resistance leads or electrode sheets, and the porous body is provided with There are many micropores for absorbing, permeating and conducting the atomized liquid. The porous body includes at least one evaporation surface that heats and evaporates the atomized liquid to generate aerosol. The heating element includes an evaporation surface arranged on the porous body. The nano-metal coating layer, the nano-metal coating layer is provided with through film holes corresponding to the micropores on the evaporation surface, the two far ends of the nano-metal coating layer are connected to the resistance lead wire or the electrode sheet Electrically connected, the nano-metal coating layer generates heat and evaporates the atomized liquid after being energized.

Preferably, the nano-metal coating layer includes a transition layer and a heat generating layer that are bonded and connected to each other, and the transition layer is bonded and connected to the evaporation surface of the porous body.

Preferably, the constituent material of the transition layer includes at least one of titanium, tantalum, niobium, titanium nitride, tantalum nitride, and niobium nitride, and the constituent material of the heat generating layer includes platinum, silver, palladium, nickel, At least one of chromium, silver-palladium alloy, and nickel-chromium alloy.

Preferably, the thickness of the transition layer is 5nm-200nm, and the thickness of the heat generating layer is 50nm-1500nm.

Preferably, the porous body is composed of a sintered porous ceramic body, a porous glass body, or a porous quartz body.

Preferably, the porosity of the porous body is 10%-70%, and the average pore diameter is 0.5um-70um.

Preferably, the porous body is composed of a cylinder with an atomized through hole in the center, the end faces of the porous body and the inner side walls of the atomized through hole are provided with the nano-metal coating layer, and the cylinder Electrode layers electrically connected to the resistance leads or electrode sheets are also provided on both ends of the body.

Preferably, the cylinder of the porous body includes an inner layer and an outer layer, and the inner layer and the outer layer are different in thickness, average pore diameter and porosity.

Preferably, the thickness, average pore diameter and porosity of the inner layer are smaller than those of the outer layer.

Preferably, the porous body is composed of a cuboid, the bottom surface of the cuboid is provided with the nano-metal coating layer, and the two distal ends of the nano-metal coating layer are provided with electrodes electrically connected to the resistance leads or electrode sheets layer.

Preferably, the electrode layer is composed of a sintered body of printed silver paste, or printed silver-palladium paste, or printed nickel-chromium paste.

Preferably, the porous body further includes a surface treatment layer, and the surface treatment layer is arranged between the porous body and the nano-metal coating layer.

Preferably, the surface treatment layer is composed of several nanoscale layers, and the adjacent layers are composed of different materials.

Preferably, the constituent material of the surface treatment layer includes at least one of zirconia, silicon oxide, aluminum nitride, and silicon nitride.

Preferably, the thickness of the surface treatment layer is 5nm-500nm.

Preferably, a protective layer for protecting the heating layer is also included, and the protective layer is provided on the outside of the nano-metal coating layer.

Preferably, the constituent material of the protective layer includes at least one of aluminum oxide, silicon nitride, boron nitride, titanium nitride, and tantalum nitride.

Preferably, the protective layer has a thickness of 50nm-1um.

Beneficial effect

The heating element of the atomizing core is an ultra-thin nano-metal coating layer covering the evaporation surface of the porous body. The nano-metal coating layer is also provided with through film holes, so the actual effective heating area is large, and the aerosol can be free It can be released from the film hole in a hindered manner, which can be well matched with the evaporation surface, so the atomization amount of the atomized liquid is greatly improved; in addition, due to the heating of the entire surface of the nano-metal coating layer, the temperature of the evaporation surface of the porous body is heated Uniform, not prone to carbon deposits and liquid leakage, no unbalanced thermal stress under high temperature work, no risk of circuit breakage in the nano-metal coating layer, improved consistency in product use, and bring users a good experience.

Description of drawings

Fig. 1 is a schematic sectional view 1 of the structure of the atomizing core of the present invention;

Fig. 2 is a schematic cross-sectional view II of the structure of the atomizing core of the present invention;

Fig. 3 is a schematic cross-sectional view 3 of the structure of the atomizing core of the present invention;

Fig. 4 is a bottom view of the atomizing core according to Embodiment 1 of the present invention;

Fig. 5 is the magnified view of part A of the nano-metal coating layer A of the embodiment of the present invention one and two;

Fig. 6 is an exploded perspective view 1 of an inverted atomizing core in Embodiment 1 of the present invention;

Fig. 7 is the second three-dimensional exploded structure diagram of the atomizing core in the first embodiment of the present invention;

Fig. 8 is a perspective view of an atomizing core according to Embodiment 2 of the present invention;

Fig. 9 is a three-dimensional exploded structure diagram of the atomizing core according to the second embodiment of the present invention;

Fig. 10 is a cross-sectional view of the three-dimensional structure of the atomizing core according to the second embodiment of the present invention;

Fig. 11 is a three-dimensional exploded structure diagram of an inverted atomizing core according to Embodiment 3 of the present invention;

Fig. 12 is a three-dimensional exploded structure diagram of the surface treatment layer of the atomization core according to the third embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

The atomization core provided with the nano metal coating layer of the present invention is used for the atomizer of the electronic atomization equipment, and the atomization core can atomize the atomization liquid into aerosol when electrified. Electronic atomization equipment can be specifically applied to electronic cigarettes, medical drug atomization equipment, etc. The atomized liquid includes solutions such as smoke liquid, medicinal liquid, and herbal essence. Fog or aerosol, etc.

Embodiments of the present invention

The present invention will be described in detail below through specific examples.

Example 1:

As shown in Figure 1 and Figure 5, the atomizing core with nano-metal coating layer of the present invention includes a porous body 1 and a heating element 2, and the two ends of the heating element 2 are connected with resistance leads or electrode sheets (not shown in the figure) . The porous body 1 is provided with many dense micropores 10 for absorbing, permeating and conducting the atomized liquid. The porous body 1 includes at least one evaporation surface 11 that heats and evaporates the atomized liquid to generate aerosol. The opposite side of the evaporation surface 11 is The liquid-absorbing surface 12 , the atomized liquid is transmitted from the liquid-absorbing surface 12 to the evaporating surface 11 . In an embodiment, the porous body 1 is formed by sintering a porous ceramic green body, and the heating element 2 is composed of a nano-metal coating layer 2 arranged on the evaporation surface 11 of the porous body 1, and the nano-metal coating layer 2 has a nanoscale thickness. The nano-metal coating layer 2 is provided with a through film hole 20 corresponding to the micropore 10 on the evaporation surface 11, that is, the micropore 10 on the evaporation surface 11 is connected with the film hole 20, and the film hole 20 can make the gas mist Unimpeded release from the film hole, so that the nano-metal coating layer can be well matched with the evaporation surface, so the atomization amount of the atomized liquid is greatly improved, bringing a good user experience to the user. The two far ends of the nanometer metal coating layer 2 are electrically connected to the resistance lead wire or the electrode sheet, and the nanometer metal coating layer generates heat and evaporates the atomizing liquid after being energized.

After the nano-metal coating layer 2 is energized by the silver electrode, the entire surface of the coated porous ceramic becomes an evaporation surface. The atomizing core of the present invention has the advantages of larger heating area and uniform temperature because the entire surface of the porous body is used as the evaporation surface. It ensures a high amount of smoke and does not cause carbon deposits and liquid leakage, and avoids problems such as burnt smell. In addition, because the entire surface of the nano-metal coating layer 2 generates heat, the temperature of the evaporation surface of the porous body is evenly heated, and there is no uneven thermal stress under high-temperature operation, and the nano-metal coating layer has no risk of circuit breakage. In addition, another advantage of the nano-layered nano-metal coating layer 2 as a heating element is that some point defects in it will not affect the conduction and resistance of the entire evaporation surface resistance, so the product has high consistency and long cycle life. Can bring a stable experience.

As shown in Figure 2 and Figure 4-7, the nano-metal coating layer 2 can adopt the principle of physical vapor deposition, that is, the PVD method, to coat the metal target on the surface of the porous body through a magnetron sputtering device, and the nano-metal coating layer 2 is a nano-scale coating layer. During sputter coating, the nano-scale coating layer will not block the micropores 10 of the porous body 1 micron scale, so the nano-metal coating layer 2 has through film holes 20 . The nano-metal coating layer 2 includes a transition layer 21 and a heating layer 22 that are bonded and connected to each other, and the transition layer 21 is bonded and connected to the evaporation surface 11 of the porous body. The constituent material of the transition layer 21 includes at least one of titanium, tantalum, niobium, titanium nitride, tantalum nitride, and niobium nitride, and its thickness is 5nm-200nm. The constituent material of the heat generating layer 22 includes platinum, silver, palladium, At least one of nickel, chromium, silver-palladium alloy, and nickel-chromium alloy, the thickness of which is 50nm-1500nm. In this embodiment, the transition layer 21 is made of metal titanium, and the heat generating layer 22 is made of metal platinum. The heating layer 22 is made of platinum metal, mainly because platinum Pt not only has a lower resistivity, but also because of its chemical inertness, which can effectively prevent the interdiffusion between the resistance film and the ceramic substrate at high operating temperatures, resulting in an increase in the resistance value. High impact atomizing core work consistency. The titanium layer of the transition layer 21 can not only enhance the adhesion between the metal platinum Pt and the substrate, but also prevent the metal platinum from reacting with the silicon material in the ceramic matrix to form silicide at the high temperature of the atomizer.

As shown in Fig. 4-Fig. 7, in the present embodiment, porous body 1 is made of cuboid, and the bottom surface of cuboid is provided with nano-metal coating layer 2, and two far-ends of nano-metal coating layer 2 are provided with electrode layer 23, and electrode Layer 23 is composed of a sintered body of printed silver paste. Metal silver is selected as the electrode material because of its extremely low resistivity and good chemical stability, which can provide stable conductive performance during the atomizer operation. Both ends of the heating element 2 can be connected with resistance leads or electrode sheets (not shown in the figure). The porous body 2 is composed of a sintered porous ceramic body, a porous glass body, or a porous quartz body. The porosity of the porous body 2 is 10%-70%, and the average pore diameter is 0.5um-70um.

Example 2:

As shown in Figures 8-10, in this embodiment, the porous body 1 is composed of a cylinder with an atomization through hole 100 in the center, and nano-metal Coating layer 2, electrode layer 23 is also provided on the nano-metal coating layer 2 on the two end faces of the cylinder, and the electrode layer 23 is composed of a sintered body printed with silver paste, that is, the electrode layer 23 is made by printing silver paste on the porous body and then sintering. become. In other embodiments, the nano-metal coating layer 2 can also be provided on the outer wall of the cylinder.

The cylinder of the porous body 1 includes an inner layer 14 and an outer layer 13. The thickness, average pore diameter and porosity of the inner layer 14 and the outer layer 13 are different, and the thickness, average pore diameter and porosity of the inner layer 14 are smaller than the thickness of the outer layer 13. , average pore size and porosity, so that it is convenient for the outer layer 13 to store liquid and quickly replenish the atomized liquid to the inner layer 14, and the inner layer 14 can balance the balance between liquid supply and atomization, which can ensure the atomization core at work. Rapid atomization also prevents fluid leakage when not working.

In other embodiments, the above-mentioned electrode layer 23 may also be printed and sintered on the porous body 1 first, and then the process of the nano-metal coating layer 2 is performed.

Example 3:

As shown in FIGS. 11-12 , the porous body 1 of the present invention has an atomizing core with a nano-metal coating layer including a surface treatment layer 15 , and the surface treatment layer 15 is provided between the porous body 1 and the nano-metal coating layer 2 . The surface treatment layer 15 can reduce the roughness of the ceramic surface and improve the flatness, so that the nano-metal coating layer 2 or the transition layer 21 can be better attached to the porous body 1, and can further improve the adhesion of the heating layer 22, making the heating layer 22 more uniform. The surface treatment layer 15 is composed of several nanoscale layers, and adjacent layers are composed of different materials. The constituent material of the surface treatment layer includes at least one of zirconia, silicon oxide, aluminum nitride, and silicon nitride. The thickness of the surface treatment layer is 5nm-500nm.

The atomizing core with the nanometer metal coating layer of the present invention also includes a protective layer 3 for protecting the heating layer 22, the protective layer 3 is arranged on the outside of the nanometer metal coating layer 2, and the protective layer 3 has the function of protecting the heating layer 22 against oxidation and anti-oxidation. The role of corrosion. The constituent material of the protective layer 3 includes at least one of aluminum oxide, silicon nitride, boron nitride, titanium nitride, and tantalum nitride, and the thickness of the protective layer is 50nm-1um.

As shown in Figure 11, on the basis of Embodiment 1, this embodiment has an atomizing core with a nanometer metal coating layer, and its porous body 1 is composed of a rectangular parallelepiped. 15 is provided with a nano-metal coating layer 2, the nano-metal coating layer 2 includes a transition layer 21 and a heating layer 22, the two far ends of the heating layer 22 are provided with electrode layers 23, and the electrode layers 23 are made of metallic silver. A protective layer 3 is also provided on the electrode layer 23 and the heating layer 22, and the protective layer 3 is made of aluminum oxide coating with a thickness of 100 nm. The protective layer 3 has the function of protecting the heating layer 22 from oxidation and corrosion, and avoids carbon deposition and blackening of the heating layer 22 after a long time of use. Even, the surface temperature is easy to control, ensuring a better taste.

As shown in FIG. 12 , the surface treatment layer 15 includes four layers, which are sequentially composed of a zirconia layer 151 , a silicon oxide layer 152 , a zirconia layer 153 , and a silicon oxide layer 154 . The surface treatment layer 15 can reduce the roughness of the ceramic surface and improve the flatness, so that the nano-metal coating layer 2 or the transition layer 21 can be better attached to the porous body 1, and can further improve the adhesion of the heating layer 22, making the heating layer 22 more uniform. At the same time, the surface treatment layer 15 is added, so that the atomized liquid in the porous body 1 is not easy to be lost, the ability to lock liquid is improved, and the balance between liquid supply and atomization is ensured. In addition, the surface treatment layer 15 can also increase the thermal resistance, avoid excessive heat transfer to the porous ceramic body, and prevent heat loss, so that the heat-generating layer 22 heats up quickly during operation, has high atomization efficiency, large amount of smoke, and good taste. The four layers of the surface treatment layer 15 can be formed by step-by-step coating through the same process, which can increase the thickness of the surface treatment layer 15 and better improve the flatness of the evaporation surface of the porous body 1 .

Industrial Applicability

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims (18)

An atomizing core with a nanometer metal coating layer, including a porous body and a heating body, the two ends of the heating body are connected with resistance leads or electrode sheets, and the porous body is provided with many micropores for absorption, penetration and Conducting the atomized liquid, the porous body includes at least one evaporation surface for heating and evaporating the atomized liquid to generate aerosol, characterized in that: the heating element includes a nano-metal coating layer arranged on the evaporation surface of the porous body, The nano-metal coating layer is provided with through film holes corresponding to the micropores on the evaporation surface, and the two far ends of the nano-metal coating layer are electrically connected to the resistance leads or electrode sheets. After the metal coating layer is energized, it generates heat and evaporates the atomizing liquid. The atomization core with nano-metal coating layer according to claim 1, characterized in that: the nano-metal coating layer includes a transition layer and a heating layer that are attached and connected to each other, and the evaporation of the transition layer and the porous body Face-to-face connection. The atomizing core with nanometer metal coating layer according to claim 2, characterized in that: the constituent material of the transition layer includes at least one of titanium, tantalum, niobium, titanium nitride, tantalum nitride, and niobium nitride The constituent material of the heating layer includes at least one of platinum, silver, palladium, nickel, chromium, silver-palladium alloy, and nickel-chromium alloy. The atomizing core with nano-metal coating layer according to claim 2, characterized in that: the thickness of the transition layer is 5nm-200nm, and the thickness of the heat-generating layer is 50nm-1500nm. The atomizing core with a nano-metal coating layer according to claim 1, wherein the porous body is composed of a sintered porous ceramic body, a porous glass body, or a porous quartz body. The atomizing core with nanometer metal coating layer according to claim 1, characterized in that: the porosity of the porous body is 10%-70%, and the average pore diameter is 0.5um-70um. The atomizing core with nanometer metal coating layer according to claim 1, characterized in that: the porous body is composed of a cylinder with an atomizing through hole in the center, and the two ends of the porous body and the atomization core The inner wall of the through hole is provided with the nano-metal coating layer, and the two ends of the cylinder are also provided with electrode layers electrically connected to the resistance leads or the electrode sheets. The atomizing core with nanometer metal coating layer according to claim 7, characterized in that: the cylinder of the porous body includes an inner layer and an outer layer, and the thickness, average pore diameter and porosity of the inner layer and the outer layer are different. The atomizing core with nanometer metal coating layer according to claim 8, characterized in that: the thickness, average pore diameter and porosity of the inner layer are smaller than the thickness, average pore diameter and porosity of the outer layer. The atomizing core with a nano-metal coating layer according to claim 1, characterized in that: the porous body is composed of a cuboid, the bottom surface of the cuboid is provided with the nano-metal coating layer, and the nano-metal coating layer The two distal ends are provided with electrode layers electrically connected to the resistance leads or electrode sheets. The atomizing core with a nano-metal coating layer according to claim 7 or 10, wherein the electrode layer is composed of a sintered body of printed silver paste, printed silver-palladium paste, or printed nickel-chromium paste. The ceramic atomizing core with a nano-metal coating layer according to claim 1, wherein the porous body further includes a surface treatment layer, and the surface treatment layer is arranged between the porous body and the nano-metal coating layer between. The ceramic atomizing core with a nano-metal coating layer according to claim 12, wherein the surface treatment layer is composed of several nano-scale layers, and the adjacent layers are composed of different materials. The ceramic atomizing core with a nano-metal coating layer according to claim 12, characterized in that, the constituent material of the surface treatment layer includes at least one of zirconia, silicon oxide, aluminum nitride, and silicon nitride. The ceramic atomizing core with nanometer metal coating layer according to claim 12, characterized in that the thickness of the surface treatment layer is 5nm-500nm. The ceramic atomizing core with a nano-metal coating layer according to claim 1, further comprising a protective layer for protecting the heating layer, and the protective layer is arranged outside the nano-metal coating layer. The ceramic atomizing core with nano-metal coating layer according to claim 16, characterized in that, the constituent materials of the protective layer include aluminum oxide, silicon nitride, boron nitride, titanium nitride, and tantalum nitride. at least one. The ceramic atomizing core with nanometer metal coating layer according to claim 16, characterized in that the thickness of the protective layer is 50nm-1um.