WO2020238607A1

WO2020238607A1 - Atomization member and electronic cigarette

Info

Publication number: WO2020238607A1
Application number: PCT/CN2020/089731
Authority: WO
Inventors: 邱伟华
Original assignee: 常州市派腾电子技术服务有限公司
Priority date: 2019-05-29
Filing date: 2020-05-12
Publication date: 2020-12-03
Also published as: CN210329343U

Abstract

An atomization member (1) and an electronic cigarette. The atomization member (1) comprises a porous substrate (11), a dielectric layer (13), a resistance layer (15), and a modification layer (17); the porous substrate (11) is provided with an atomization surface (2); the dielectric layer (13), the resistance layer (15), and the modification layer (17) are arranged on the atomization surface (2); the dielectric layer (13), the resistance layer (15), and the modification layer (17) are sequentially stacked and formed on the porous substrate (11); the porous substrate (11) is configured to absorb an aerosol forming substrate and conduct the aerosol forming substrate onto the atomization surface (2); the resistance layer (15) is configured to convert electric energy into heat energy and heat and atomize the aerosol forming substrate on the atomization surface (2); the dielectric layer (13) provides a substrate for the formation of the resistance layer (15) on the porous substrate (11); the modification layer (17) causes the resistance layer (15) to be modified in terms of preset expected performance; the resistance layer (15) is tightly combined with the atomization surface (2) so as to prevent the resistance layer (15) from failing due to heating without e-liquid.

Description

Atomizer and electronic cigarette

Technical field

The utility model relates to the technical field of electronic cigarettes, and more specifically, to an atomizer for electronic cigarettes.

Background technique

The existing electric heating type electronic cigarette winds a spiral heating wire on cotton. The cotton absorbs conductive aerosol to form a matrix. The heating wire is energized to heat the aerosol on the cotton to form a matrix. The contact area between the heating wire and the cotton is small. It is easy to burn and fail, and the atomization effect is poor.

Utility model content

The technical problem to be solved by the utility model is to provide an atomizer and an electronic cigarette in view of the above-mentioned defects of the prior art.

The technical solution adopted by the utility model to solve its technical problems is: constructing an atomizing part including a porous substrate, a dielectric layer, a resistance layer, and a modified layer. The porous substrate has an atomizing surface, and the dielectric layer, The resistance layer and the modified layer are arranged on the atomization surface, and the dielectric layer, the resistance layer and the modified layer are sequentially formed on the porous substrate, and the porous substrate is used to absorb The aerosol-forming substrate and the aerosol-forming substrate are conducted to the atomization surface. The resistance layer is used to convert electrical energy into heat energy and heat and atomize the aerosol-forming substrate on the atomization surface. The dielectric layer provides a base for the resistance layer to be formed on the porous substrate, and the modification layer enables the resistance layer to be modified in predetermined desired properties.

Further, the porous matrix is made of a material having a porous structure, the dielectric layer is made of an insulating material, and the dielectric layer is used to insulate the porous matrix from the resistance layer.

Further, the porous substrate is made of porous stainless steel material, and the pore diameter is 9 μm-129 μm.

Further, the porosity of the porous matrix is 32%-58%. μmμm

Further, the pore diameter of the micropores on the porous substrate is 5 μm-150 μm.

Further, the dielectric layer is formed on the atomized surface by a thin film process or a thick film process. Further, the resistance layer is formed on the dielectric layer by a thin film process or a thick film process. further. The modified layer is formed on the resistance layer by a thin film process or a thick film process. Further, the modified layer is further provided with a relief hole, the relief hole is formed on the side of the modified layer away from the resistance layer, and the relief hole penetrates the modified layer and is close to the One side of the resistive layer.

The utility model also provides an electronic cigarette, which comprises the above atomizing part and a battery assembly electrically connected to the atomizing part, and the battery assembly is used to provide electric energy to the atomizing part.

The atomization part of the present invention has the following beneficial effects: the dielectric layer, the resistance layer and the modified layer are arranged on the atomization surface, and the dielectric layer, the resistance layer and the modified layer The resistance layer is sequentially superimposed and formed on the porous substrate. The resistance layer is used to convert electrical energy into heat energy and heat and atomize the aerosol-forming substrate on the atomization surface. The resistance layer and the atomization surface are tightly combined to prevent the resistance layer Dry burning fails; at the same time, the porous substrate is made of porous stainless steel. The porous stainless steel is suitable for working in a strong oxidizing environment, and suitable for contact with food-grade aerosol forming substrates, and the atomization effect is good. Understandably, the electronic cigarette using the atomizer has the same beneficial effects.

Description of the drawings

In the following, the utility model will be further described in conjunction with the accompanying drawings and embodiments. In the accompanying drawings:

Figure 1 is a schematic diagram of the structure of an atomizer provided by the present invention;

Figure 2 is a schematic diagram of the structure of the atomizer manufactured by the thin film process in the present invention;

Figure 3 is a partial enlarged view of A in Figure 2;

4 is a schematic diagram of the structure of the atomization part manufactured by the thick film process in the present invention;

Figure 5 is a cross-sectional view of B-B in Figure 4;

Fig. 6 is a partial enlarged view of C in Fig. 5.

The label in the figure is

1. Atomization part; 11. Porous substrate; 13. Dielectric layer; 15. Resistance layer; 17. Modification layer; 19. Avoidance hole; 2. Atomization surface

Detailed ways

In order to have a clearer understanding of the technical features, purpose and effects of the utility model, the specific implementation of the utility model will be described in detail with reference to the drawings.

In this embodiment, an electronic cigarette (not shown) is provided. The electronic cigarette includes an atomizer 1 and a battery assembly (not shown) electrically connected to the atomizer 1, and the battery assembly is used to atomize Item 1 provides electrical energy. The electronic cigarette also includes a liquid storage cavity (not shown in the figure), and the liquid storage cavity is used for storing e-liquid.

The atomizer 1 is used to convert the absorbed aerosol-forming substrate into smoke by heating. As shown in FIG. 1, in this embodiment, the atomization member 1 includes a porous substrate 11, a dielectric layer 13, a resistance layer 15, and a modified layer 17. The porous substrate 11 has an atomization surface 2, a dielectric layer 13, and a resistance layer 15. And the modified layer 17 is arranged on the atomizing surface 2. The dielectric layer 13, the resistance layer 15 and the modified layer 17 are sequentially formed on the porous substrate 11, and the porous substrate 11 is used to absorb the aerosol to form the substrate and the aerosol to form the substrate Conducted to the atomization surface 2, the resistance layer 15 is electrically connected to the battery assembly, the resistance layer 15 is used to convert electrical energy into heat energy and heat and atomize the aerosol forming substrate on the atomization surface 2, the dielectric layer 13 is The resistance layer 15 is formed on the porous substrate 11 to provide a base, and the modification layer 17 allows the resistance layer 15 to be modified in predetermined desired properties.

In one of the embodiments, the porous substrate 11 is made of a material with a porous structure, specifically, it can be made of any material such as porous ceramics, porous glass, porous plastics, porous fibers, and porous metals. The hole diameter is 6 μm-129 μm. In this specific embodiment, the porous substrate 11 is made of porous stainless steel. Specifically, the porous substrate 11 is made of 316L porous stainless steel, where 316L is a brand of porous stainless steel.

The existing porous substrate 11 mostly uses porous ceramics, porous glass, porous plastics and porous fibers. The main technical problem that needs to be faced when the porous substrate 11 uses porous metal is that, on the one hand, the porous metal is in direct contact with the aerosol forming substrate. Undesirable substances in porous metal will be transferred to the aerosol-forming matrix and will eventually be ingested into the human body; on the other hand, porous metal will undergo oxidation reaction when it comes in contact with oxygen in the air at high temperature, resulting in the life of porous metal shorten.

The chemical composition of 336L porous stainless steel is: 16%-18% chromium, 11%-14% nickel, 2%-3% molybdenum, less than 0.03% carbon, and less than or equal to 2% other components. The remaining chemical composition is iron. 336L porous stainless steel is suitable for strong oxidation environment. The maximum working temperature in oxidizing atmosphere is 600℃, and the maximum working temperature in reducing atmosphere is 850℃. In addition, 336L porous stainless steel is suitable for contact with food or drinking liquid.

Among them, the porosity of porous stainless steel is 32% to 58%. On the one hand, it can ensure that the porous stainless steel has a good liquid conduction efficiency, and prevent the phenomenon of dry burning of aerosol-forming substrates from poor circulation, so as to improve the atomization effect; On the other hand, it can avoid that the porous stainless steel conducts liquid too fast and it is difficult to lock the liquid, which causes the probability of leakage to increase. The porosity refers to the ratio of the total volume of the micro voids in the porous matrix 11 to the total volume of the porous matrix 11. The porosity can be adjusted according to the composition of the aerosol-forming substrate. For example, when the aerosol-forming substrate has a relatively large viscosity, a higher porosity can be selected to ensure the effect of fluid transfer.

Further, in this embodiment, the pore size of the micropores on the porous stainless steel is 9 μm-129 μm. By setting the pore diameter of a suitable size, the porous stainless steel can conduct liquid uniformly and achieve a better atomization effect.

It is understandable that, in other embodiments, when the porous substrate 11 is made of other porous structure materials, the porosity and micropore diameter of the porous substrate 11 can be set with reference to the parameters of the porous stainless steel, which will not be repeated here. .

The resistance layer 15 may be made of one of resistance materials such as nail oxide (RuO2), nickel-chromium heat-resistant alloy (Ni Cr), or tantalum nitride (Ta2N), or chromium disilicide.

The modified layer 17 is located on the outermost side of the atomization surface 2. The modified layer 17 replaces the resistance layer 15 and directly contacts the turbidity formed by mixing air, smoke, and aerosol. The modified layer 17 can be modified according to the resistance layer 15 Resistance requirements, made of metal or alloy materials, so that the resistance layer 15 has predetermined desired properties such as corrosion resistance, or oxidation resistance, or high temperature resistance. For example, in order to improve the oxidation resistance of the resistance layer 15, the modified layer 17 may Made of platinum, or palladium, or palladium-copper alloy, or gold-silver-platinum alloy, or gold-silver alloy, or palladium-silver alloy, or gold-platinum alloy and other materials with strong oxidation resistance; for example, to improve resistance For the insulating properties of the layer 15, the modified layer 17 can be made of one of insulating materials.

In one of the embodiments, the porous substrate 11 is made of porous stainless steel material, the dielectric layer 13 is made of insulating material, and the dielectric layer 13 is used to insulate the porous substrate 11 from the resistance layer 15 and prevent the porous substrate 11 from the resistance layer 15 The electrical connection causes a short circuit. The dielectric layer 13 may be made of any one of insulating materials such as barium titanate (BaT i03), tantalum oxide (Ta205), or silicon oxide.

The dielectric layer 13, the resistance layer 15 and the modified layer 17 are formed on the fogging surface 2 by a thin film process or a thick film process, so that the resistance layer 15 and the fogging surface 2 are closely combined to prevent the resistance layer 15 from being in contact due to heat at the same time. When the aerosol forms a matrix, dry burning failure occurs.

In one of the embodiments, the dielectric layer 13 is formed on the fogging surface 2 by a thin film process, the resistance layer 15 is formed on the dielectric layer 13 by a thin film process, and the modified layer 17 is formed on the resistance layer 15 by a thin film process. In a specific embodiment, the dielectric layer 13 is formed on the atomized surface 2 by chemical vapor deposition, vacuum evaporation, sputtering coating, electroplating, etc., and the resistive layer 15 is formed on the atomizing surface 2 by vacuum evaporation, sputtering coating, electroplating, etc. On the dielectric layer 13, the modified layer 17 is formed on the resistance layer 15 by vacuum evaporation, sputtering coating, electroplating and other methods. Specifically, as shown in Figures 2 and 3, the porous substrate 11 itself is a porous structure, and the dielectric layer 13, the resistance layer 15, and the modified layer 17 formed on the surface of the porous substrate 11 in turn also present a continuous porous structure, and the porous substrate 11. The corresponding micropore diameters on the dielectric layer 13, the resistance layer 15 and the modified layer 17 are sequentially reduced.

In one of the embodiments, the dielectric layer 13 is formed on the fogging surface 2 through a thick film process, the resistive layer 15 is formed on the dielectric layer 13 through a thick film process, and the modified layer 17 is formed on the resistive layer 15 through a thick film process. on. In a specific embodiment, the dielectric layer 13, the resistance layer 15 and the modified layer 17 are formed on the atomized surface 2 by a screen printing method, the dielectric paste is printed on the atomized surface 2, and the dielectric paste is dried and sintered, and finally A firmly adhered dielectric layer 13 is formed on the atomized surface 2; the resistive paste is printed on the side of the dielectric layer 13 away from the atomized surface 2. The resistive paste is dried and sintered, and finally forms a firmly adhered dielectric layer 13 Resistor layer 15; the modified paste is printed on the side of the resistive layer 15 away from the dielectric layer 13, and the modified paste is dried and sintered, and finally a modified layer 17 with strong adhesion is formed on the resistive layer 15. Specifically, as shown in FIG. 4, FIG. 5, and FIG. 6, the formation of the dielectric layer 13 includes the following steps: a. Making a mask engraved with openings in the same pattern as the design circuit pattern; b. Disposing dielectric paste and resistive paste Material and modified slurry; c. Place the mask between the screen and the porous substrate 11, place the media slurry prepared in step b on the screen, and then use a rubber or plastic scraper to set The speed and pressure move on the screen, so that the medium slurry passes through the pattern openings on the mask and is not printed on the atomized surface 2, so that the desired pattern printed by the medium slurry is obtained on the atomized surface 2; d. Drying the atomizer 1; e. Firing the medium slurry, so that the medium layer 13 is sintered on the porous substrate 11. It is understandable that the steps for forming the resistance layer 15 and the modified layer 17 are the same as the steps for forming the dielectric layer 13, and will not be described again. It is understandable that, in other embodiments, the dielectric layer 13, the resistance layer 15 and the modified layer 17 are formed on the fogging surface 2 by photolithography or photo-patterning methods, or direct drawing methods controlled by a microcomputer.

As shown in Figures 3 and 6, in one of the embodiments, the modified layer 17 is provided with an escape hole 19, and the escape hole 19 is formed on the side of the modified layer 17 away from the resistance layer 15, and the escape hole 19 penetrates To the side of the modified layer 17 close to the resistance layer 15. The electronic cigarette also includes a contact piece (not shown in the figure). One end of the contact piece is inserted through the escape hole and finally held against the resistance layer 15, and the other end of the contact piece is electrically connected to the battery assembly, so that the contact piece makes the resistance layer and the battery The components are electrically connected.

In the present invention, the dielectric layer 13, the resistance layer 15 and the modified layer 17 are arranged on the atomizing surface 2. The dielectric layer 13, the resistive layer 15 and the modified layer 17 are sequentially formed on the porous substrate 11, and the resistive layer 15 is used for In order to convert electrical energy into heat and heat and atomize the aerosol-forming substrate on the atomization surface 2, the resistance layer 15 is tightly combined with the atomization surface 2 to prevent the resistance layer 15 from drying out; meanwhile, the porous substrate 11 is made of porous stainless steel. Made of material, porous stainless steel is suitable for working in a strong oxidizing environment, suitable for contact with food-grade aerosol forming substrate, and good atomization effect.

The above embodiments are only to illustrate the technical concept and features of the present utility model, and their purpose is to enable those familiar with the technology to understand the content of the present utility model and implement them accordingly, and cannot limit the protection scope of the present utility model. All equal changes and modifications made to the scope of the claims of the present utility model shall fall within the scope of the claims of the present utility model.

It should be understood that for those of ordinary skill in the art, improvements or changes can be made based on the above description, and all these improvements and changes should fall within the protection scope of the appended claims of the present invention.

Claims

An atomizer, which is characterized in that it comprises a porous substrate, a dielectric layer, a resistance layer, and a modified layer. The porous substrate has an atomization surface, and the dielectric layer, the resistance layer, and the modified layer are arranged on On the atomizing surface, the dielectric layer, the resistance layer, and the modified layer are sequentially formed on the porous substrate, and the porous substrate is used to absorb the aerosol to form a substrate and conduct the aerosol to form the substrate. To the atomization surface, the resistance layer is used to convert electrical energy into heat energy and heat and atomize the aerosol-forming substrate on the atomization surface, and the dielectric layer is formed on the surface of the resistance layer. A substrate is provided on the porous substrate, and the modified layer allows the resistance layer to be modified in predetermined desired properties.
The atomizer according to claim 1, wherein the porous matrix is made of a material with a porous structure, the dielectric layer is made of an insulating material, and the dielectric layer is used to connect the porous matrix with the The resistance layer is insulated.
3. The atomizer according to claim 2, wherein the porous substrate is made of porous stainless steel material, and the pore diameter is 9 μm-129 μm.
8. The atomizer of claim 1, wherein the porosity of the porous substrate is 32%-58%.
The atomizer according to claim 1, wherein the pore diameter of the micropores on the porous substrate is 5 μm-150 μm.
3. The atomizing element of claim 1, wherein the dielectric layer is formed on the atomizing surface by a thin film process or a thick film process.
3. The atomizing element of claim 1, wherein the resistance layer is formed on the dielectric layer by a thin film process or a thick film process.
3. The atomizing member of claim 1, wherein the modified layer is formed on the resistance layer by a thin film process or a thick film process.
The atomizer according to claim 1, wherein the modified layer is further provided with an escape hole, the escape hole is formed on the side of the modified layer facing away from the resistance layer, and the The avoidance hole penetrates to the side of the modified layer close to the resistance layer.
An electronic cigarette, characterized in that: the electronic cigarette comprises the atomizer according to any one of claims 1-9, a battery assembly electrically connected to the atomizer, and the battery assembly is used to The atomizer provides electricity.