CN218898374U

CN218898374U - Heating element and electronic smoking set

Info

Publication number: CN218898374U
Application number: CN202223346118.9U
Authority: CN
Inventors: 刘望生; 徐婷; 夏慕楠; 龙继才; 张耀华; 周宏明
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-04-25
Anticipated expiration: 2032-12-12

Abstract

The application relates to a heating element and an electronic smoking set. The heating body comprises a first substrate, a second substrate, a first heating film and a second heating film. The second substrate is connected with one end of the first substrate. The porosity of the first matrix is less than or equal to 1.5%; the porosity of the second matrix is 45% -75%. The first heating film is arranged on the inner wall of the first matrix and used for heating the first matrix. The second heating film is arranged on at least one surface of the second substrate and is used for heating the second substrate. In the heating body, a first substrate with smaller porosity is matched with a first heating film to heat and atomize HNB products; the second matrix with larger porosity is matched with the second heating film to atomize tobacco tar. Through rational in infrastructure design, above-mentioned heat body can the integrated heating atomizing HNB product and tobacco tar, and the flue gas produces rapidly, takes out promptly and stops promptly, is favorable to promoting the user experience of electron cigarette product.

Description

Heating element and electronic smoking set

Technical Field

The application relates to the technical field of electronic cigarettes, in particular to a heating element and an electronic smoking set.

Background

The heating non-Burning (HNB for short) is a novel product combining a heating appliance and a cigarette bullet, which is a low-temperature cigarette designed by taking 'heating only without Burning' as an idea, and a special heating device is utilized to Heat the processed tobacco shreds (special cigarette bullet) to a certain temperature, and the cigarette bullet is heated to a degree sufficient to emit smoke for use.

The traditional HNB smoking set has the problem of low smoking speed, so that the waiting time of a user before smoking is longer, the convenience is poorer, the user experience is poorer, and the application of the HNB smoking set is limited.

Disclosure of Invention

Based on this, this application provides a heat-generating body that atomization efficiency is higher.

In addition, an electronic smoking set comprising the heating element is also provided.

In one aspect of the present application, there is provided a heating element comprising:

the porous rate of the first matrix is less than or equal to 1.5%;

the second matrix is connected with one end of the first matrix, and the porosity of the second matrix is 45% -75%;

a first heat generating film disposed on at least one surface of the first substrate for heating the first substrate; and

The second heating film is arranged on at least one surface of the second substrate and is used for heating the second substrate.

In some embodiments, the first matrix has a porosity of 0.5% or less.

In some embodiments, the second matrix has a porosity of 60% to 70%.

In some of these embodiments, the first substrate is a hollow tubular structure;

optionally, the wall thickness of the first substrate is 0.1 mm-1.5 mm.

In some embodiments, the second substrate is a flat plate structure;

optionally, the thickness of the second substrate is 0.1 mm-3.5 mm.

In some of these embodiments, the first substrate is a hollow tubular structure; the second substrate is of a flat plate structure with a through hole; the through-hole of the second matrix is communicated with the hollow cavity of the first matrix.

In some of these embodiments, the first substrate is a hollow tubular structure; the second matrix is of a hollow tubular structure; the hollow cavity of the second matrix is communicated with the hollow cavity of the first matrix.

In some of these embodiments, the first substrate is a dense ceramic substrate; the second matrix is a porous ceramic matrix.

In some embodiments, the metal component of the first and second heat generating films is one of silver, silver palladium, silver platinum, nickel, ruthenium, and stainless steel.

On the other hand, the application also provides an electronic smoking set comprising the heating element.

The heating body comprises a first substrate, a second substrate, a first heating film and a second heating film. The first substrate and the first heating film are matched to heat, atomize and heat a non-combustion (HNB for short) product; the second base member is connected with the one end of first base member, and the porosity of second base member is greater than the porosity of first base member, and the cooperation of second base member and second heating film can atomizing tobacco tar. Through rational in infrastructure design, above-mentioned heat body can the integrated heating atomizing HNB product and tobacco tar, and the flue gas produces rapidly, is favorable to promoting the user experience of electron cigarette product.

Drawings

FIG. 1 is a schematic diagram showing the structure of a heating element according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of the heat-generating body shown in FIG. 1;

FIG. 3 is a schematic structural view of a heat-generating body according to another embodiment of the present application;

FIG. 4 is a cross-sectional view of the heat-generating body shown in FIG. 3;

fig. 5 is a schematic structural diagram of an electronic smoking set according to an embodiment of the present disclosure;

fig. 6 is a cross-sectional view of the electronic smoking article of fig. 5;

reference numerals illustrate:

100. a heating element; 110. a first substrate; 120. a second substrate; 130. a first heat generating film; 140. a second heat generating film; 10. an electronic smoking set; 200. an electrical control assembly; 300. a housing; 310. an oil storage bin; 320. a cigarette holder.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, a heating element 100 is provided, which includes a first substrate 110, a second substrate 120, a first heating film 130 and a second heating film 140.

Wherein the porosity of the first substrate 110 is less than or equal to 1.5%. The second substrate 120 is connected to one end of the first substrate 110. The porosity of the second matrix 120 is 45% to 75%. The second substrate 120 has a larger porosity than the first substrate 110, which is beneficial to absorbing and atomizing tobacco tar and rapidly generating smoke.

The first heat generating film 130 is disposed on at least one surface of the first substrate 110 for heating the first substrate 110. The first heat generating membrane 130 is electrically connected to operate to generate heat and conduct it to the first substrate 110 for heating the atomizing HNB cartridge.

The second heat generating film 140 is disposed on at least one surface of the second substrate 120 for heating the second substrate 120.

In the heating element 100, the first substrate 110 with smaller porosity and the first heating film 130 are matched to heat, atomize and heat a non-combustion (HNB for short) product; the second substrate 120 is connected with one end of the first substrate 110, and the porosity of the second substrate 120 is greater than that of the first substrate 110, and the second substrate 120 with the greater porosity and the second heating film 140 cooperate to atomize tobacco tar. Through rational in infrastructure design, above-mentioned heat-generating body 100 can the integral type heating atomizing HNB product and tobacco tar, and the flue gas produces rapidly, can realize taking out promptly stopping promptly, is favorable to promoting the user experience of electron cigarette product.

In the present embodiment, the porosity of the first matrix 110 is 1.5% or less. The porosity of the first substrate 110 is within the above range, and the first substrate 110 has higher density and heat conduction property, and has better heating effect on the HNB cartridge. Alternatively, the first matrix 110 has a porosity in the range of 0, 0.05%, 0.1%, 0.2%, 0.4%, 0.5%, 0.6%, 0.8%, 1%, 1.2%, 1.5% or any of the above values. Further, the porosity of the first matrix 110 is 0.5% or less or 0.2% or less.

In the present embodiment, the porosity of the second matrix 120 is 45% to 75%. The porosity of the second substrate 120 is within the above range, and the second substrate 120 has better liquid absorbing capacity and heat conducting property, and better effect of heating atomized tobacco tar. Optionally, the porosity of the second matrix 120 is 45%, 50%, 55%, 60%, 65%, 70%, 75% or within the range of any of the above values. Further, the porosity of the second matrix 120 is 60% to 70%.

In some of these embodiments, the first substrate 110 is a hollow tubular structure. The hollow cavity within the first substrate 110 can be used to house HNB cartridges. Further, the first heat generating film 130 is disposed on the inner wall of the first substrate 110. By providing the first heat generating film 130 on the inner wall of the first substrate 110, the heating efficiency of the cartridge is higher.

In some of these embodiments, the wall thickness of the first substrate 110 is 0.1mm to 1.5mm. The wall thickness of the first substrate 110 is within the above range, and the first substrate 110 has both good strength and energy utilization. Too thin first substrate 110 may result in lower strength, and too thick first substrate 110 may greatly reduce the energy utilization of the inner wall surface. Alternatively, the wall thickness of the first substrate 110 is 0.1mm, 0.2mm, 0.4mm, 0.5mm, 0.8mm, 1mm, 1.2mm, 1.4mm, or 1.5mm. Further, the wall thickness of the first substrate 110 is 0.1mm to 0.9mm.

In some of these embodiments, the second substrate 120 is a flat plate structure.

In some of these embodiments, the thickness of the second substrate 120 is 0.1mm to 3.5mm. The thickness of the second substrate 120 in the above range can have both good liquid absorption performance and good heat conduction performance. If the second substrate 120 is too thin, the liquid guiding is faster, the sucking taste is affected, and the strength of the second substrate 120 is lower; too thick second substrate 120 provides a lower energy utilization and increases the path of transmission of the tobacco tar and smoke. Alternatively, the thickness of the second substrate 120 is 0.1mm, 0.2mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, or 3.5mm. Further, the thickness of the second substrate 120 is 1mm to 3mm.

Referring again to fig. 1, in some embodiments, the first substrate 110 is a hollow tubular structure. The second substrate 120 is a flat plate structure with through-holes. The through-channels of the second substrate 120 are in communication with the hollow cavity of the first substrate 110. The through-hole of the second substrate 120 with the above structure is communicated with the hollow cavity of the first substrate 110, and the tobacco tar generated by atomization can be transmitted through the hollow cavity of the second substrate 120.

Referring to fig. 3 and 4, in some embodiments, the first substrate 110 is a hollow tubular structure, and the second substrate 120 is a hollow tubular structure. The hollow cavity of the second substrate 120 communicates with the hollow cavity of the first substrate 110. Further, a second heat generating film 140 is provided on the inner wall of the first substrate 110. The second substrate 120 of the hollow tubular structure can increase the contact area with the tobacco tar, so that the effect of heating the atomized tobacco tar is better.

The first substrate 110 of the heating element 100 has a hollow tubular shape, and the second substrate 120 has a flat plate structure; or a hollow tubular segmented structure. The structure of the heating element 100 according to the embodiment of the present application is not limited to the description of the above description, and may be specifically adjusted according to the structure of the electronic smoking article 10.

In some embodiments, the metal components of the first and second

heat generating films

130 and 140 are each independently silver, silver palladium, silver platinum, nickel, ruthenium, stainless steel, or the like, but are not limited thereto.

In some of these embodiments, the first heat generating film 130 is arranged in an "S" shape on the surface of the first substrate 110. By the "S" type arrangement, the first heat generating film 130 conducts heat more uniformly on the first substrate 110.

In some of these embodiments, the second heat generating film 140 is arranged in an "S" shape on the surface of the second substrate 120. By the "S" arrangement, the first heat generating film 140 conducts heat more uniformly on the first substrate 120.

It should be noted that the "S" type arrangement means that the arrangement of the heat generating films is similar to the letter "S", and it is understood that the heat generating films may be in a shape in which a plurality of "S" are connected in series, for example, 2, 3, 4 or more. In addition, it is understood that the heating film may be arranged in a "U" shape or a "W" shape, but is not limited thereto.

In some of these embodiments, the first substrate 110 is a dense ceramic substrate. The second substrate 120 is a porous ceramic substrate.

In some of these embodiments, the manufacturing method of the heating body 100 includes the following steps S110 to S140.

Step S110: a first matrix 110 blank is prepared.

In some of these embodiments, the first matrix 110 blank is prepared from a first casting slurry.

In some of these embodiments, the raw materials of the first casting slurry include a powder material and an organic solution.

In some of these embodiments, the powder material comprises a ceramic powder. The ceramic powder may include ceramic raw materials commonly used in the art. As an example, the ceramic powder includes at least one of silica, quartz powder, floating beads, diatomaceous earth, alumina, zirconia, magnesia, kaolin, mullite, cordierite, zeolite, and hydroxyapatite.

In some of these embodiments, the powder material may also optionally include a sintering aid. The sintering aid is capable of promoting sintering of the densified ceramic body during sintering. The sintering aid may include ceramic sintering aids commonly used in the art. Illustratively, the sintering aid includes at least one of anhydrous sodium carbonate, anhydrous potassium carbonate, albite, potash feldspar, clay, kaolin, bentonite, and glass frit. In some of these embodiments, the sintering aid comprises 0 to 60% by mass of the powder material. Optionally, the sintering aid comprises 0, 1%, 2%, 5%, 10%, 20%, 30%, 40%, 50% or 60% of the powder material by mass. By adjusting the content of the sintering aid, the sintering shrinkage of the green body of the first base 110 can be adjusted.

In some of these embodiments, the organic solution includes a solvent. The solvent is used for dispersing the powder material to prepare slurry. The solvent may be a ceramic slurry solvent commonly used in the art, for example, the solvent includes at least one of absolute ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, isobutyl alcohol, ethylene glycol, n-octyl alcohol, ethyl acetate, and butyl acetate. In some of these embodiments, the solvent is 80% to 150% by mass relative to the powder material. Optionally, the solvent is 80%, 90%, 100%, 110%, 120%, 130%, 140% or 150% by mass relative to the powder material. Controlling the solvent content within the above range helps to prepare a slurry of suitable viscosity.

In some of these embodiments, the organic solution further optionally includes at least one of a dispersant, a binder, a plasticizer, and a coupling agent.

The dispersing agent is beneficial to uniformly dispersing the powder material in the first casting slurry and improves the uniformity of the slurry. In some of these embodiments, the dispersant comprises at least one of oleic acid, stearic acid, triethyl phosphate, herring oil, castor oil, and triethanolamine. In some of these embodiments, the dispersant is 0.1% to 5% by mass relative to the powder material. Optionally, the dispersant is 0.1%, 0.2%, 0.5%, 1%, 2%, 3%, 4% or 5% by mass relative to the powder material. The content of the dispersant is controlled within the above range, and the dispersibility and uniformity of the first casting slurry are good.

The binder facilitates green forming of the first substrate 110. In some of these embodiments, the binder includes at least one of polyvinyl acetate, polyvinyl acetal, ethylene-ethyl acetate copolymer resin, vinyl chloride-vinyl acetate copolymer resin, perchloroethylene resin, polyacrylate, polyamide, and polysulfone. In some of these embodiments, the binder is 5% to 20% by mass relative to the powder material. Optionally, the mass percentage of the binder relative to the powder material is 5%, 8%, 10%, 12%, 15%, 18% or 20%.

In some of these embodiments, the coupling agent comprises at least one of a silane, a titanate, and an aluminate. In some of these embodiments, the mass percentage of the coupling agent relative to the powder material is 0-2%. Optionally, the mass percentage of the coupling agent relative to the powder material is 0, 0.1%, 0.2%, 0.5%, 1%, 1.5% or 2%.

In some of these embodiments, the plasticizer comprises at least one of polyethylene glycol, butyl benzyl phthalate, dibutyl phthalate, dioctyl phthalate, dibutyl titanate, acrylic acid esters, and dioctyl adipate. In some of these embodiments, the mass ratio of plasticizer to binder is (0.4-0.7): 1. optionally, the mass ratio of plasticizer to binder is 0.4:1, 0.5:1, 0.6:1, or 0.7:1.

In some of these embodiments, step S110 includes:

step S112: a first casting slurry is prepared.

Step S114: a plurality of first casting green tapes are prepared by casting and forming the first casting slurry.

Step S116: a plurality of first casting green tapes are wound and formed to prepare a first base 110 blank of a hollow tubular structure.

Step S120: a first heat generating film 130 is prepared on at least one surface of the green body of the first substrate 110.

In some of these embodiments, the first heat generating film 130 is prepared by screen printing. In some of these embodiments, the first heat generating film 130 is prepared from a conductive paste.

In some of these embodiments, the first heat generating film 130 is prepared on the surface of the first casting belt by screen printing. The plurality of first casting tapes are wound and formed by step S116, so that the first heat generating film 130 is provided in the inner wall of the body of the first base 110.

Step S130: and preparing a second heating film 140 and a second substrate 120 blank, and connecting the second substrate 120 blank to one end of the first substrate 110 blank to obtain a heating body 100 blank.

In some of these embodiments, the second substrate 120 blank is a flat plate structure, and the second substrate 120 blank includes a second green tape and an injection molded blank.

In some of these embodiments, the second casting belt is prepared from a second casting slurry.

In some of these embodiments, the second casting slurry includes a powder material and an organic solution.

In some of these embodiments, the powder material of the second casting slurry includes a ceramic powder, a sintering aid, and a pore former. The ceramic powder and the sintering aid of the second casting slurry may be selected from those shown by the ceramic powder and the sintering aid of the first casting slurry.

In some of these embodiments, the sintering aid of the second casting slurry accounts for 1-45% of the mass of the powder material. Optionally, the sintering aid comprises 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40% or 45% of the powder material by mass.

In some of these embodiments, the pore former of the second casting slurry comprises at least one of wood chips, graphite powder, starch, flour, walnut powder, polystyrene spheres, and polymethyl methacrylate spheres. In some of these embodiments, the ratio of the mass of the pore former to the sum of the mass of the ceramic powder and the sintering aid in the second casting slurry is (0.1-1.8): 1. optionally, the ratio of the mass of the pore former to the sum of the masses of the ceramic powder and the sintering aid is 0.1:1, 0.2:1, 0.5:1, 1:1, 1.2:1, 1.5:1, or 1.8:1.

In some of these embodiments, the organic solvent of the second casting slurry comprises a solvent. The solvent in the second casting slurry may be selected from the materials shown as the solvent of the first casting slurry described above. In some of these embodiments, the solvent in the second casting slurry is 75% to 150% by mass relative to the powder material. Optionally, the solvent is 75%, 80%, 90%, 100%, 110%, 120%, 130%, 140% or 150% by mass relative to the powder material.

In some of these embodiments, the organic solution further optionally includes at least one of a dispersant, a binder, a plasticizer, and a coupling agent. The substances of the dispersing agent, the binder, the plasticizer and the coupling agent in the second casting slurry may be selected from the substances shown by the dispersing agent, the binder, the plasticizer and the coupling agent in the second casting slurry.

In some of these embodiments, the dispersant is present in the second casting slurry in an amount of 0.1% to 6% by mass relative to the powder material. Optionally, the dispersant is 0.1%, 0.2%, 0.5%, 1%, 2%, 3%, 4%, 5% or 6% by mass relative to the powder material.

In some of these embodiments, the mass percentage of the binder in the second casting slurry relative to the powder material is 5% to 25%. Optionally, the mass percentage of the binder relative to the powder material is 5%, 10%, 15%, 20% or 25%.

In some of these embodiments, the mass ratio of plasticizer to binder in the second casting slurry is (0.4 to 0.8): 1. optionally, the mass ratio of plasticizer to binder is 0.4:1, 0.5:1, 0.6:1, 0.7:1, or 0.8:1.

In some of these embodiments, the mass percentage of the coupling agent relative to the powder material is 0-3%. Optionally, the mass percentage of the coupling agent relative to the powder material is 0, 0.5%, 1%, 1.5%, 2%, 2.5% or 3%.

In some of these embodiments, the injection molded green body is prepared from an injection molding feedstock.

In some of these embodiments, the injection molding material includes a powder material and an injection molding aid.

In some embodiments, the powder material is 50-85% by mass of the injection molding material. Optionally, the mass percentage of the powder material in the injection molding raw material is 50%, 55%, 60%, 65%, 70%, 75%, 80% or 85%.

In some of these embodiments, the powder material of the injection molding feedstock includes ceramic powder, a sintering aid, and a pore former. The ceramic powder, sintering aid and pore-forming agent in the injection molding raw material can be selected from the ceramic powder, sintering aid and pore-forming agent in the second casting slurry.

In some embodiments, the sintering aid in the injection molding material is 1-45% by mass of the powder material. Optionally, the sintering aid is 1%, 2%, 5%, 10%, 20%, 30%, 40% or 45% by mass of the powder material.

In some embodiments, the mass percentage of the pore-forming agent in the injection molding raw material in the powder material is 10% -80%. Optionally, the mass percent of the pore-forming agent in the powder material is 10%, 20%, 30%, 40%, 50%, 60%, 70% or 80%.

In some of these embodiments, the injection molding aid includes a backbone molding agent, a surfactant, a plasticizer, and a binder. The plasticizer and binder in the plasticizing aid may be selected from those shown in the plasticizer and binder in the first casting slurry described above.

In some embodiments, the skeleton forming agent comprises at least one of natural paraffin, microcrystalline paraffin, liquid paraffin, polyethylene wax, polypropylene wax, and vegetable oil. In some embodiments, the mass percent of the skeleton forming agent in the injection molding auxiliary agent is 45% -90%. Optionally, the mass percentage of the skeleton forming agent in the injection molding auxiliary agent is 45%, 50%, 60%, 70%, 80% or 90%.

In some of these embodiments, the surfactant comprises at least one of stearic acid, oleic acid, stearamide, and glycerin. In some of these embodiments, the surfactant is present in the injection molding aid in an amount of 1% to 10% by mass. Optionally, the mass percent of the surfactant in the injection molding additive is 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9% or 10%.

In some of these embodiments, the plasticizer comprises at least one of phthalate, phosphate, dioctyl adipate, dioctyl azelate, and dioctyl sebacate. In some of these embodiments, the mass percent of plasticizer in the injection molding aid is 1% to 25%. Optionally, the mass percent of plasticizer in the injection molding aid is 1%, 2%, 5%, 10%, 15%, 20% or 25%.

In some of these embodiments, the binder comprises at least one of polyethylene, polypropylene, atactic polypropylene, polystyrene, polymethacrylate, ethylene vinyl acetate copolymer, and ethylene ethyl acrylate copolymer. In some of these embodiments, the mass percentage of the binder relative to the powder material is 10% to 45%. Optionally, the mass percentage of the binder relative to the powder material is 10%, 15%, 20%, 25%, 30%, 35%, 40% or 45%.

In some of these embodiments, the second heat generating film 140 is prepared by screen printing. In some of these embodiments, the second heat generating film 140 is prepared from a conductive paste.

Specifically, step S130 includes:

step S132: and preparing a second casting green tape by adopting the second casting slurry.

Step S134: a second heat generating film 140 is screen-printed on the surface of the second casting belt.

Step S136: placing the first substrate 110 blank obtained in the step S120 and the second tape obtained in the step S134 in a mold, and preparing a second substrate 120 blank by injection molding of injection molding raw materials, so that the second substrate 120 blank is connected with one end of the first substrate 110 blank.

Step S140: and (5) discharging glue from the blank of the heating body 100, and performing vacuum sintering to prepare the heating body 100.

In some of these embodiments, the temperature of the adhesive discharge is 650-750 ℃; the glue discharging time is 36-48 h.

In some of these embodiments, the sintering temperature is 1100 ℃ to 1300 ℃; the sintering time is 1 h-3 h.

In the preparation method, the heating film is screen printed on the ceramic blank to obtain a heating body 100 blank, and then the heating body 100 is prepared by co-firing. The heating body 100 is prepared by a cofiring process, the preparation process is simpler, the production cost is lower, and the method is suitable for large-scale industrial production. In other embodiments, the method for manufacturing the heating element 100 may also be manufactured by a post-firing process.

In another embodiment of the present application, there is also provided a method for manufacturing the heating element 100, including the following steps S210 to S220.

Step S210: a heating element 100 green body was prepared.

Step S220: and discharging glue from the green body of the heating body 100, and performing vacuum sintering to prepare the heating body 100.

Wherein, the heating element 100 blank comprises: a first base 110 blank, a second base 120 blank, a first heat generating film 130, and a second heat generating film 140.

The first substrate 110 blank is a hollow tubular structure. The green body of the second substrate 120 is attached to one end of the green body of the first substrate 110.

The first heating film 130 is disposed on the inner wall of the blank of the first substrate 110. The second heat generating film 140 is disposed on at least one surface of the green body of the second substrate 120.

In another embodiment of the present application, an application of the heating element 100 in preparing an electronic smoking set is also provided.

Referring to fig. 5 and 6, another embodiment of the present application further provides an electronic smoking set 10, including the heating element 100 described above.

In some embodiments, the electronic smoking article 10 further comprises an electronic control assembly 200 and a housing 300. The heating element 100 is placed inside the case 300.

In some of these embodiments, the electronic control assembly 200 is connected to the first heat generating film 130 and the second heat generating film 140 in the heat generating body 100. When the electronic smoking set 10 works, a current loop is formed between the heating body 100 and the electronic control assembly 200, so as to heat the atomized smoke cartridge or the tobacco tar.

In some of these embodiments, the housing 300 is internally provided with a reservoir 310 and a cartridge (not shown). The oil storage bin 310 is used for storing tobacco tar; the cartridge bin is used for placing the cartridges. In some of these embodiments, the cartridge may be disposed within the hollow cavity of the heat-generating body 100. The surface of the shell 300 is provided with a cigarette holder 320 for sucking and sucking the electronic cigarette. When the electronic smoking set 10 works, the cigarette holder 320 is communicated with the heating body 100, so that the heating body 100 generates smoke and transmits the smoke to the cigarette holder 320. The structure of the case 300 is not limited to the above description, and may be adjusted according to the specific design of the electronic smoking article 10.

The electronic smoking set 10 heats atomized tobacco tar and tobacco bullets by using the heating element 100, and the electronic smoking set 10 can generate smoke at the beginning of working faster, and has better smoking taste.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The following is a detailed description of specific embodiments. The following examples are not specifically described but do not include other components than the unavoidable impurities. Reagents and apparatus used in the examples, unless otherwise specified, are all routine choices in the art. The experimental methods without specific conditions noted in the examples were carried out according to conventional conditions, such as those described in the literature, books, or recommended by the manufacturer.

Example 1

The present embodiment provides a heat generating body, referring to fig. 1 to 2, including a first substrate, a first heat generating film, a second substrate, and a second heat generating film. The first matrix is hollow tubular compact ceramic, the porosity of the first matrix is 0.2%, and the wall thickness is 0.35mm. The second matrix is porous ceramic with a flat plate structure, the porosity of the second matrix is 60%, the thickness of the second matrix is 2mm, and the second matrix is connected with one end of the first matrix. The first heating film is arranged on the inner wall of the first substrate, and the second heating film is arranged on the surface, far away from the first substrate, of the second substrate. The first heating film and the second heating film are made of nickel-based heating films.

Preparation of the heating element of this example:

preparing a first matrix blank: the first casting slurry comprises a powder material and an organic solvent. The powder material comprises 62.5% of hydroxyapatite, 25% of glass powder and 12.5% of kaolin according to mass percentage. The organic solvent comprises, by mass, 23% of absolute ethyl alcohol, 27.5% of isobutanol, 18% of butyl acetate, 1% of oleic acid dispersants, 20% of polyvinyl acetal binders, 6% of dioctyl phthalate, 4% of dibutyl phthalate and 0.5% of phthalate coupling agents. The mass percentage of the powder material in the first casting slurry is 48%. And performing planetary ball milling on the powder material and an organic solvent for 24 hours to obtain first casting slurry, performing vacuum defoamation and casting molding to obtain a plurality of first casting green belts, performing silk screen printing on the surfaces of the first casting green belts to obtain first heating films, and performing tight winding and warm water pressing molding to obtain a hollow tubular first substrate blank.

Preparing a second matrix blank: the second substrate blank is prepared by two parts, wherein the part printed with the second heating film is a second tape, and the part connected with the first substrate blank is an injection molding blank.

The second casting slurry comprises a powder material and an organic solvent. The powder material comprises 50% of hydroxyapatite, 20% of glass powder, 10% of kaolin and 20% of polymethyl methacrylate balls according to mass percentage. The organic solvent comprises, by mass, 13% of absolute ethyl alcohol, 23% of ethyl acetate, 12% of isobutanol, 23% of butyl acetate, 1% of castor oil, 18% of a polyvinyl acetal binder, 9% of dioctyl phthalate and 1% of a silane coupling agent. The mass percentage of the powder material in the second casting slurry is 48 percent. Ball milling the powder material and an organic solvent roller for 12 hours to obtain first casting slurry, vacuum defoaming, casting and forming to obtain a second casting green belt, and silk-screen printing on the second casting green belt to prepare a second heating film.

Placing the first base body blank and the second casting green belt printed with the second heating film in a mold, and adopting injection molding raw materials to prepare an injection molding blank for connecting the first base body blank and the second casting green belt, thereby obtaining a heating body blank. The injection molding raw material comprises a powder material and an injection molding auxiliary agent. The powder material comprises 45% of hydroxyapatite, 20% of glass powder, 10% of kaolin and 25% of polymethyl methacrylate balls according to mass percentage. The injection molding auxiliary agent comprises 72% of natural paraffin, 1.5% of stearic acid, 8.5% of phthalate plasticizer, 8% of polyethylene and 10% of ethylene-vinyl acetate copolymer according to mass percentage. The mass percentage of the powder material in the injection molding raw material is 62 percent. Mixing the powder material in a three-dimensional mixer for 3 hours, banburying the powder material with an injection molding additive at 150 ℃ for 4 hours, cooling and crushing to obtain granular injection molding raw materials.

The heating element blank is subjected to glue discharging at 700 ℃ for 48 hours, and then is subjected to vacuum co-firing at 1200 ℃ for 2 hours, so that the heating element of the embodiment is obtained.

Example 2

The present embodiment provides a heat-generating body having a structure as in embodiment 1, the heat-generating body including a first base, a first heat-generating film, a second base, and a second heat-generating film. The first matrix is hollow tubular compact ceramic, the porosity of the first matrix is 0.15%, and the wall thickness is 0.3mm. The second matrix is porous ceramic with a flat plate structure, the porosity of the second matrix is 68%, the thickness of the second matrix is 1.8mm, and the second matrix is connected with one end of the first matrix. The first heating film is arranged on the inner wall of the first substrate, and the second heating film is arranged on the surface, far away from the first substrate, of the second substrate. The first heating film and the second heating film are made of ruthenium-based heating films.

Example 3

This example provides a heat-generating body, referring to fig. 3 to 4, in which the first substrate is a dense ceramic in a hollow tubular shape, the porosity of the first substrate is 0.08%, and the wall thickness is 0.35mm. The second matrix is porous ceramic with a hollow tubular structure, the porosity of the second matrix is 65%, the wall thickness is 0.9mm, and the second matrix is connected with one end of the first matrix. The first heating film is arranged on the inner wall of the first substrate, and the second heating film is arranged on the inner wall of the second substrate. The first heating film and the second heating film are made of nickel-based heating films.

Example 4

The heat-generating body of this example was different from example 2 in that the porosity of the first substrate was 1.5%.

Example 5

The heat-generating body of this example was different from example 2 in that the porosity of the second substrate was 45%.

Example 6

The heat-generating body of this example was different from example 2 in that the wall thickness of the first base body was 2mm.

Example 7

The heat-generating body of this example was different from example 2 in that the thickness of the second base was 4mm.

Test part:

the heating elements prepared in examples 1 to 7 were tested for sensory experience in an electronic smoking set, and specifically included mouthfeel 1 and mouthfeel 2, with the full score of mouthfeel 1 and mouthfeel 2 being 7. The test results are recorded in table 1.

The mouthfeel 1 refers to sensory experience when the porous ceramic component atomizes tobacco flavored tobacco tar, and is mainly comprehensively evaluated from the aspects of aroma concentration, cooling degree, sweetness, smoke humidity, throat feeling, aroma reduction degree, smoke quantity, satisfaction, smoke temperature, miscellaneous gases and the like.

Mouthfeel 2, namely sensory experience when the dense ceramic component atomizes HNB cigarettes, is comprehensively evaluated mainly from aspects of aroma quality, aroma quantity, richness, smoke concentration, irritation, aftertaste, miscellaneous gas, strength, smoke quantity consistency, suction port number and the like.

TABLE 1

Sequence number	Mouthfeel 1	Mouthfeel 2
			Example 1	6.75	6.75
Example 2	7	7
			Example 3	7	7
Example 4	6.75	5.5
			Example 5	3	7
Example 6	7	4.5
			Example 7	5	7

As can be seen from the data related to table 1, the heating elements of examples 1 to 7 were used in electronic cigarettes, the sensory experience score (mouthfeel 1) of the atomized tobacco flavor tobacco tar was 3 to 7, and the sensory experience score (mouthfeel 2) of the atomized HNB cigarette was 4.5 to 7. Through the cooperation of first base member and second base member, the heat-generating body of embodiment 1 ~ 7 is arranged in the electron smoking set, can realize taking out promptly and stop promptly, compares simple HNB smoking set, need not longer smoking set preheating time, can atomize and produce the flue gas, and the convenience is preferred, brings better user experience. In particular, the heating elements of examples 1 to 3 have good taste 1 and taste 2 scores, and the sensory experience of the user is good.

Compared with example 2, the first matrix in example 4 has larger porosity, and the sensory experience score of the heating element atomized HNB cigarette is lower. The second substrate in example 5 was less porous and the sensory experience score of the heat-generating body atomized tobacco flavor tar was lower. In example 6, the wall thickness of the first substrate is larger, and the sensory experience score of the heating element atomized HNB cigarette is lower. The thickness of the second substrate in example 7 was greater and the sensory experience score of the heat-generating body atomized tobacco flavor tar was lower.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present application, which facilitate a specific and detailed understanding of the technical solutions of the present application, but are not to be construed as limiting the scope of the utility model. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. It should be understood that those skilled in the art, based on the technical solutions provided in the present application, can obtain technical solutions through logical analysis, reasoning or limited experiments, all fall within the protection scope of the claims attached to the present application. The scope of the patent application is therefore intended to be limited by the content of the appended claims, the description and drawings being presented to the extent that the claims are defined.

Claims

1. A heat-generating body, characterized by comprising:

the porous rate of the first matrix is less than or equal to 1.5%;

2. A heat-generating body as described in claim 1, wherein the porosity of the first base body is 0.5% or less.

3. A heat-generating body as described in claim 1, wherein the second substrate has a porosity of 60% to 70%.

4. A heat-generating body as described in claim 1, wherein the first base body is a hollow tubular structure;

optionally, the wall thickness of the first substrate is 0.1 mm-1.5 mm.

5. A heat-generating body as described in claim 1, wherein the second base is a flat plate structure;

optionally, the thickness of the second substrate is 0.1 mm-3.5 mm.

6. A heat-generating body as described in claim 5, wherein the first base body is a hollow tubular structure; the second substrate is of a flat plate structure with a through hole; the through-hole of the second matrix is communicated with the hollow cavity of the first matrix.

7. A heat-generating body as described in claim 1, wherein the first base body is a hollow tubular structure; the second matrix is of a hollow tubular structure; the hollow cavity of the second matrix is communicated with the hollow cavity of the first matrix.

8. A heat-generating body according to any one of claims 1 to 7, wherein the first substrate is a dense ceramic substrate; the second matrix is a porous ceramic matrix.

9. A heat-generating body according to any one of claims 1 to 7, wherein the metal components of the first heat-generating film and the second heat-generating film are each independently one of silver, silver palladium, silver platinum, nickel, ruthenium and stainless steel.

10. An electronic smoking set comprising the heating element according to any one of claims 1 to 9.